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authorOlof Johansson <olof@lixom.net>2012-09-16 20:03:42 -0700
committerOlof Johansson <olof@lixom.net>2012-09-16 20:04:39 -0700
commita73403d85ab43ca633e393bb130add337d69fadb (patch)
treecce9d968bc915bc974f18ca0f4f05d6331288e7b /drivers/tty/serial
parente640ca0fcb8b616c92a660605fddd1cc9e4bde1d (diff)
parentcdd86b277dc82220aa630414896505517a02a201 (diff)
Merge branch 'depends/tty-omap-serial' into next/cleanup
This part of the tty tree (unfortunately with all the preceding patches as well) is a dependency for some of the OMAP cleanups, so we've pulled it in as a dependency based on agreement with Greg. Signed-off-by: Olof Johansson <olof@lixom.net>
Diffstat (limited to 'drivers/tty/serial')
-rw-r--r--drivers/tty/serial/68328serial.c23
-rw-r--r--drivers/tty/serial/8250/8250.c84
-rw-r--r--drivers/tty/serial/8250/8250.h34
-rw-r--r--drivers/tty/serial/8250/8250_acorn.c22
-rw-r--r--drivers/tty/serial/8250/8250_dw.c38
-rw-r--r--drivers/tty/serial/8250/8250_gsc.c26
-rw-r--r--drivers/tty/serial/8250/8250_hp300.c26
-rw-r--r--drivers/tty/serial/8250/8250_pci.c205
-rw-r--r--drivers/tty/serial/8250/8250_pnp.c28
-rw-r--r--drivers/tty/serial/8250/serial_cs.c30
-rw-r--r--drivers/tty/serial/Kconfig50
-rw-r--r--drivers/tty/serial/Makefile4
-rw-r--r--drivers/tty/serial/altera_uart.c6
-rw-r--r--drivers/tty/serial/amba-pl010.c15
-rw-r--r--drivers/tty/serial/amba-pl011.c89
-rw-r--r--drivers/tty/serial/bfin_uart.c2
-rw-r--r--drivers/tty/serial/crisv10.c45
-rw-r--r--drivers/tty/serial/ifx6x60.c4
-rw-r--r--drivers/tty/serial/imx.c5
-rw-r--r--drivers/tty/serial/ioc3_serial.c3
-rw-r--r--drivers/tty/serial/ioc4_serial.c5
-rw-r--r--drivers/tty/serial/jsm/jsm_tty.c8
-rw-r--r--drivers/tty/serial/lpc32xx_hs.c823
-rw-r--r--drivers/tty/serial/m32r_sio.c36
-rw-r--r--drivers/tty/serial/max3100.c12
-rw-r--r--drivers/tty/serial/max3107.c1215
-rw-r--r--drivers/tty/serial/max3107.h441
-rw-r--r--drivers/tty/serial/max310x.c1260
-rw-r--r--drivers/tty/serial/mpc52xx_uart.c8
-rw-r--r--drivers/tty/serial/msm_serial.c2
-rw-r--r--drivers/tty/serial/msm_smd_tty.c8
-rw-r--r--drivers/tty/serial/mxs-auart.c7
-rw-r--r--drivers/tty/serial/of_serial.c13
-rw-r--r--drivers/tty/serial/omap-serial.c860
-rw-r--r--drivers/tty/serial/pch_uart.c4
-rw-r--r--drivers/tty/serial/pxa.c14
-rw-r--r--drivers/tty/serial/samsung.c46
-rw-r--r--drivers/tty/serial/sc26xx.c4
-rw-r--r--drivers/tty/serial/sccnxp.c985
-rw-r--r--drivers/tty/serial/serial_core.c223
-rw-r--r--drivers/tty/serial/sirfsoc_uart.c8
-rw-r--r--drivers/tty/serial/sunsu.c8
42 files changed, 4078 insertions, 2651 deletions
diff --git a/drivers/tty/serial/68328serial.c b/drivers/tty/serial/68328serial.c
index 3ed20e435e5..66c38a3f74c 100644
--- a/drivers/tty/serial/68328serial.c
+++ b/drivers/tty/serial/68328serial.c
@@ -515,7 +515,7 @@ static void change_speed(struct m68k_serial *info, struct tty_struct *tty)
unsigned cflag;
int i;
- cflag = tty->termios->c_cflag;
+ cflag = tty->termios.c_cflag;
if (!(port = info->port))
return;
@@ -617,7 +617,7 @@ static void rs_set_ldisc(struct tty_struct *tty)
if (serial_paranoia_check(info, tty->name, "rs_set_ldisc"))
return;
- info->is_cons = (tty->termios->c_line == N_TTY);
+ info->is_cons = (tty->termios.c_line == N_TTY);
printk("ttyS%d console mode %s\n", info->line, info->is_cons ? "on" : "off");
}
@@ -985,7 +985,7 @@ static void rs_set_termios(struct tty_struct *tty, struct ktermios *old_termios)
change_speed(info, tty);
if ((old_termios->c_cflag & CRTSCTS) &&
- !(tty->termios->c_cflag & CRTSCTS)) {
+ !(tty->termios.c_cflag & CRTSCTS)) {
tty->hw_stopped = 0;
rs_start(tty);
}
@@ -1070,7 +1070,7 @@ static void rs_close(struct tty_struct *tty, struct file * filp)
if (tty->ldisc.close)
(tty->ldisc.close)(tty);
tty->ldisc = ldiscs[N_TTY];
- tty->termios->c_line = N_TTY;
+ tty->termios.c_line = N_TTY;
if (tty->ldisc.open)
(tty->ldisc.open)(tty);
}
@@ -1189,12 +1189,6 @@ rs68328_init(void)
serial_driver->flags = TTY_DRIVER_REAL_RAW;
tty_set_operations(serial_driver, &rs_ops);
- if (tty_register_driver(serial_driver)) {
- put_tty_driver(serial_driver);
- printk(KERN_ERR "Couldn't register serial driver\n");
- return -ENOMEM;
- }
-
local_irq_save(flags);
for(i=0;i<NR_PORTS;i++) {
@@ -1224,8 +1218,17 @@ rs68328_init(void)
0,
"M68328_UART", info))
panic("Unable to attach 68328 serial interrupt\n");
+
+ tty_port_link_device(&info->tport, serial_driver, i);
}
local_irq_restore(flags);
+
+ if (tty_register_driver(serial_driver)) {
+ put_tty_driver(serial_driver);
+ printk(KERN_ERR "Couldn't register serial driver\n");
+ return -ENOMEM;
+ }
+
return 0;
}
diff --git a/drivers/tty/serial/8250/8250.c b/drivers/tty/serial/8250/8250.c
index 8123f784bcd..d4e0b07cb13 100644
--- a/drivers/tty/serial/8250/8250.c
+++ b/drivers/tty/serial/8250/8250.c
@@ -2202,6 +2202,7 @@ serial8250_do_set_termios(struct uart_port *port, struct ktermios *termios,
unsigned char cval, fcr = 0;
unsigned long flags;
unsigned int baud, quot;
+ int fifo_bug = 0;
switch (termios->c_cflag & CSIZE) {
case CS5:
@@ -2221,8 +2222,11 @@ serial8250_do_set_termios(struct uart_port *port, struct ktermios *termios,
if (termios->c_cflag & CSTOPB)
cval |= UART_LCR_STOP;
- if (termios->c_cflag & PARENB)
+ if (termios->c_cflag & PARENB) {
cval |= UART_LCR_PARITY;
+ if (up->bugs & UART_BUG_PARITY)
+ fifo_bug = 1;
+ }
if (!(termios->c_cflag & PARODD))
cval |= UART_LCR_EPAR;
#ifdef CMSPAR
@@ -2246,7 +2250,7 @@ serial8250_do_set_termios(struct uart_port *port, struct ktermios *termios,
if (up->capabilities & UART_CAP_FIFO && port->fifosize > 1) {
fcr = uart_config[port->type].fcr;
- if (baud < 2400) {
+ if (baud < 2400 || fifo_bug) {
fcr &= ~UART_FCR_TRIGGER_MASK;
fcr |= UART_FCR_TRIGGER_1;
}
@@ -2336,7 +2340,7 @@ serial8250_do_set_termios(struct uart_port *port, struct ktermios *termios,
serial_port_out(port, UART_EFR, efr);
}
-#ifdef CONFIG_ARCH_OMAP
+#ifdef CONFIG_ARCH_OMAP1
/* Workaround to enable 115200 baud on OMAP1510 internal ports */
if (cpu_is_omap1510() && is_omap_port(up)) {
if (baud == 115200) {
@@ -2426,7 +2430,7 @@ static unsigned int serial8250_port_size(struct uart_8250_port *pt)
{
if (pt->port.iotype == UPIO_AU)
return 0x1000;
-#ifdef CONFIG_ARCH_OMAP
+#ifdef CONFIG_ARCH_OMAP1
if (is_omap_port(pt))
return 0x16 << pt->port.regshift;
#endif
@@ -2979,36 +2983,36 @@ void serial8250_resume_port(int line)
static int __devinit serial8250_probe(struct platform_device *dev)
{
struct plat_serial8250_port *p = dev->dev.platform_data;
- struct uart_port port;
+ struct uart_8250_port uart;
int ret, i, irqflag = 0;
- memset(&port, 0, sizeof(struct uart_port));
+ memset(&uart, 0, sizeof(uart));
if (share_irqs)
irqflag = IRQF_SHARED;
for (i = 0; p && p->flags != 0; p++, i++) {
- port.iobase = p->iobase;
- port.membase = p->membase;
- port.irq = p->irq;
- port.irqflags = p->irqflags;
- port.uartclk = p->uartclk;
- port.regshift = p->regshift;
- port.iotype = p->iotype;
- port.flags = p->flags;
- port.mapbase = p->mapbase;
- port.hub6 = p->hub6;
- port.private_data = p->private_data;
- port.type = p->type;
- port.serial_in = p->serial_in;
- port.serial_out = p->serial_out;
- port.handle_irq = p->handle_irq;
- port.handle_break = p->handle_break;
- port.set_termios = p->set_termios;
- port.pm = p->pm;
- port.dev = &dev->dev;
- port.irqflags |= irqflag;
- ret = serial8250_register_port(&port);
+ uart.port.iobase = p->iobase;
+ uart.port.membase = p->membase;
+ uart.port.irq = p->irq;
+ uart.port.irqflags = p->irqflags;
+ uart.port.uartclk = p->uartclk;
+ uart.port.regshift = p->regshift;
+ uart.port.iotype = p->iotype;
+ uart.port.flags = p->flags;
+ uart.port.mapbase = p->mapbase;
+ uart.port.hub6 = p->hub6;
+ uart.port.private_data = p->private_data;
+ uart.port.type = p->type;
+ uart.port.serial_in = p->serial_in;
+ uart.port.serial_out = p->serial_out;
+ uart.port.handle_irq = p->handle_irq;
+ uart.port.handle_break = p->handle_break;
+ uart.port.set_termios = p->set_termios;
+ uart.port.pm = p->pm;
+ uart.port.dev = &dev->dev;
+ uart.port.irqflags |= irqflag;
+ ret = serial8250_register_8250_port(&uart);
if (ret < 0) {
dev_err(&dev->dev, "unable to register port at index %d "
"(IO%lx MEM%llx IRQ%d): %d\n", i,
@@ -3081,7 +3085,7 @@ static struct platform_driver serial8250_isa_driver = {
static struct platform_device *serial8250_isa_devs;
/*
- * serial8250_register_port and serial8250_unregister_port allows for
+ * serial8250_register_8250_port and serial8250_unregister_port allows for
* 16x50 serial ports to be configured at run-time, to support PCMCIA
* modems and PCI multiport cards.
*/
@@ -3155,6 +3159,7 @@ int serial8250_register_8250_port(struct uart_8250_port *up)
uart->port.regshift = up->port.regshift;
uart->port.iotype = up->port.iotype;
uart->port.flags = up->port.flags | UPF_BOOT_AUTOCONF;
+ uart->bugs = up->bugs;
uart->port.mapbase = up->port.mapbase;
uart->port.private_data = up->port.private_data;
if (up->port.dev)
@@ -3198,29 +3203,6 @@ int serial8250_register_8250_port(struct uart_8250_port *up)
EXPORT_SYMBOL(serial8250_register_8250_port);
/**
- * serial8250_register_port - register a serial port
- * @port: serial port template
- *
- * Configure the serial port specified by the request. If the
- * port exists and is in use, it is hung up and unregistered
- * first.
- *
- * The port is then probed and if necessary the IRQ is autodetected
- * If this fails an error is returned.
- *
- * On success the port is ready to use and the line number is returned.
- */
-int serial8250_register_port(struct uart_port *port)
-{
- struct uart_8250_port up;
-
- memset(&up, 0, sizeof(up));
- memcpy(&up.port, port, sizeof(*port));
- return serial8250_register_8250_port(&up);
-}
-EXPORT_SYMBOL(serial8250_register_port);
-
-/**
* serial8250_unregister_port - remove a 16x50 serial port at runtime
* @line: serial line number
*
diff --git a/drivers/tty/serial/8250/8250.h b/drivers/tty/serial/8250/8250.h
index f9719d167c8..0c5e908df0b 100644
--- a/drivers/tty/serial/8250/8250.h
+++ b/drivers/tty/serial/8250/8250.h
@@ -13,36 +13,6 @@
#include <linux/serial_8250.h>
-struct uart_8250_port {
- struct uart_port port;
- struct timer_list timer; /* "no irq" timer */
- struct list_head list; /* ports on this IRQ */
- unsigned short capabilities; /* port capabilities */
- unsigned short bugs; /* port bugs */
- unsigned int tx_loadsz; /* transmit fifo load size */
- unsigned char acr;
- unsigned char ier;
- unsigned char lcr;
- unsigned char mcr;
- unsigned char mcr_mask; /* mask of user bits */
- unsigned char mcr_force; /* mask of forced bits */
- unsigned char cur_iotype; /* Running I/O type */
-
- /*
- * Some bits in registers are cleared on a read, so they must
- * be saved whenever the register is read but the bits will not
- * be immediately processed.
- */
-#define LSR_SAVE_FLAGS UART_LSR_BRK_ERROR_BITS
- unsigned char lsr_saved_flags;
-#define MSR_SAVE_FLAGS UART_MSR_ANY_DELTA
- unsigned char msr_saved_flags;
-
- /* 8250 specific callbacks */
- int (*dl_read)(struct uart_8250_port *);
- void (*dl_write)(struct uart_8250_port *, int);
-};
-
struct old_serial_port {
unsigned int uart;
unsigned int baud_base;
@@ -56,9 +26,6 @@ struct old_serial_port {
unsigned long irqflags;
};
-/*
- * This replaces serial_uart_config in include/linux/serial.h
- */
struct serial8250_config {
const char *name;
unsigned short fifo_size;
@@ -78,6 +45,7 @@ struct serial8250_config {
#define UART_BUG_TXEN (1 << 1) /* UART has buggy TX IIR status */
#define UART_BUG_NOMSR (1 << 2) /* UART has buggy MSR status bits (Au1x00) */
#define UART_BUG_THRE (1 << 3) /* UART has buggy THRE reassertion */
+#define UART_BUG_PARITY (1 << 4) /* UART mishandles parity if FIFO enabled */
#define PROBE_RSA (1 << 0)
#define PROBE_ANY (~0)
diff --git a/drivers/tty/serial/8250/8250_acorn.c b/drivers/tty/serial/8250/8250_acorn.c
index b0ce8c56f1a..857498312a9 100644
--- a/drivers/tty/serial/8250/8250_acorn.c
+++ b/drivers/tty/serial/8250/8250_acorn.c
@@ -43,7 +43,7 @@ serial_card_probe(struct expansion_card *ec, const struct ecard_id *id)
{
struct serial_card_info *info;
struct serial_card_type *type = id->data;
- struct uart_port port;
+ struct uart_8250_port uart;
unsigned long bus_addr;
unsigned int i;
@@ -62,19 +62,19 @@ serial_card_probe(struct expansion_card *ec, const struct ecard_id *id)
ecard_set_drvdata(ec, info);
- memset(&port, 0, sizeof(struct uart_port));
- port.irq = ec->irq;
- port.flags = UPF_BOOT_AUTOCONF | UPF_SHARE_IRQ;
- port.uartclk = type->uartclk;
- port.iotype = UPIO_MEM;
- port.regshift = 2;
- port.dev = &ec->dev;
+ memset(&uart, 0, sizeof(struct uart_8250_port));
+ uart.port.irq = ec->irq;
+ uart.port.flags = UPF_BOOT_AUTOCONF | UPF_SHARE_IRQ;
+ uart.port.uartclk = type->uartclk;
+ uart.port.iotype = UPIO_MEM;
+ uart.port.regshift = 2;
+ uart.port.dev = &ec->dev;
for (i = 0; i < info->num_ports; i ++) {
- port.membase = info->vaddr + type->offset[i];
- port.mapbase = bus_addr + type->offset[i];
+ uart.port.membase = info->vaddr + type->offset[i];
+ uart.port.mapbase = bus_addr + type->offset[i];
- info->ports[i] = serial8250_register_port(&port);
+ info->ports[i] = serial8250_register_8250_port(&uart);
}
return 0;
diff --git a/drivers/tty/serial/8250/8250_dw.c b/drivers/tty/serial/8250/8250_dw.c
index f574eef3075..c3b2ec0c8c0 100644
--- a/drivers/tty/serial/8250/8250_dw.c
+++ b/drivers/tty/serial/8250/8250_dw.c
@@ -89,7 +89,7 @@ static int dw8250_handle_irq(struct uart_port *p)
static int __devinit dw8250_probe(struct platform_device *pdev)
{
- struct uart_port port = {};
+ struct uart_8250_port uart = {};
struct resource *regs = platform_get_resource(pdev, IORESOURCE_MEM, 0);
struct resource *irq = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
struct device_node *np = pdev->dev.of_node;
@@ -104,28 +104,28 @@ static int __devinit dw8250_probe(struct platform_device *pdev)
data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL);
if (!data)
return -ENOMEM;
- port.private_data = data;
-
- spin_lock_init(&port.lock);
- port.mapbase = regs->start;
- port.irq = irq->start;
- port.handle_irq = dw8250_handle_irq;
- port.type = PORT_8250;
- port.flags = UPF_SHARE_IRQ | UPF_BOOT_AUTOCONF | UPF_IOREMAP |
+ uart.port.private_data = data;
+
+ spin_lock_init(&uart.port.lock);
+ uart.port.mapbase = regs->start;
+ uart.port.irq = irq->start;
+ uart.port.handle_irq = dw8250_handle_irq;
+ uart.port.type = PORT_8250;
+ uart.port.flags = UPF_SHARE_IRQ | UPF_BOOT_AUTOCONF | UPF_IOREMAP |
UPF_FIXED_PORT | UPF_FIXED_TYPE;
- port.dev = &pdev->dev;
+ uart.port.dev = &pdev->dev;
- port.iotype = UPIO_MEM;
- port.serial_in = dw8250_serial_in;
- port.serial_out = dw8250_serial_out;
+ uart.port.iotype = UPIO_MEM;
+ uart.port.serial_in = dw8250_serial_in;
+ uart.port.serial_out = dw8250_serial_out;
if (!of_property_read_u32(np, "reg-io-width", &val)) {
switch (val) {
case 1:
break;
case 4:
- port.iotype = UPIO_MEM32;
- port.serial_in = dw8250_serial_in32;
- port.serial_out = dw8250_serial_out32;
+ uart.port.iotype = UPIO_MEM32;
+ uart.port.serial_in = dw8250_serial_in32;
+ uart.port.serial_out = dw8250_serial_out32;
break;
default:
dev_err(&pdev->dev, "unsupported reg-io-width (%u)\n",
@@ -135,15 +135,15 @@ static int __devinit dw8250_probe(struct platform_device *pdev)
}
if (!of_property_read_u32(np, "reg-shift", &val))
- port.regshift = val;
+ uart.port.regshift = val;
if (of_property_read_u32(np, "clock-frequency", &val)) {
dev_err(&pdev->dev, "no clock-frequency property set\n");
return -EINVAL;
}
- port.uartclk = val;
+ uart.port.uartclk = val;
- data->line = serial8250_register_port(&port);
+ data->line = serial8250_register_8250_port(&uart);
if (data->line < 0)
return data->line;
diff --git a/drivers/tty/serial/8250/8250_gsc.c b/drivers/tty/serial/8250/8250_gsc.c
index d8c0ffbfa6e..097dff9c08a 100644
--- a/drivers/tty/serial/8250/8250_gsc.c
+++ b/drivers/tty/serial/8250/8250_gsc.c
@@ -26,7 +26,7 @@
static int __init serial_init_chip(struct parisc_device *dev)
{
- struct uart_port port;
+ struct uart_8250_port uart;
unsigned long address;
int err;
@@ -48,21 +48,21 @@ static int __init serial_init_chip(struct parisc_device *dev)
if (dev->id.sversion != 0x8d)
address += 0x800;
- memset(&port, 0, sizeof(port));
- port.iotype = UPIO_MEM;
+ memset(&uart, 0, sizeof(uart));
+ uart.port.iotype = UPIO_MEM;
/* 7.272727MHz on Lasi. Assumed the same for Dino, Wax and Timi. */
- port.uartclk = 7272727;
- port.mapbase = address;
- port.membase = ioremap_nocache(address, 16);
- port.irq = dev->irq;
- port.flags = UPF_BOOT_AUTOCONF;
- port.dev = &dev->dev;
-
- err = serial8250_register_port(&port);
+ uart.port.uartclk = 7272727;
+ uart.port.mapbase = address;
+ uart.port.membase = ioremap_nocache(address, 16);
+ uart.port.irq = dev->irq;
+ uart.port.flags = UPF_BOOT_AUTOCONF;
+ uart.port.dev = &dev->dev;
+
+ err = serial8250_register_8250_port(&uart);
if (err < 0) {
printk(KERN_WARNING
- "serial8250_register_port returned error %d\n", err);
- iounmap(port.membase);
+ "serial8250_register_8250_port returned error %d\n", err);
+ iounmap(uart.port.membase);
return err;
}
diff --git a/drivers/tty/serial/8250/8250_hp300.c b/drivers/tty/serial/8250/8250_hp300.c
index c13438c9301..8f1dd2cc00a 100644
--- a/drivers/tty/serial/8250/8250_hp300.c
+++ b/drivers/tty/serial/8250/8250_hp300.c
@@ -171,7 +171,7 @@ static int __devinit hpdca_init_one(struct dio_dev *d,
return 0;
}
#endif
- memset(&port, 0, sizeof(struct uart_port));
+ memset(&uart, 0, sizeof(uart));
/* Memory mapped I/O */
port.iotype = UPIO_MEM;
@@ -182,7 +182,7 @@ static int __devinit hpdca_init_one(struct dio_dev *d,
port.membase = (char *)(port.mapbase + DIO_VIRADDRBASE);
port.regshift = 1;
port.dev = &d->dev;
- line = serial8250_register_port(&port);
+ line = serial8250_register_8250_port(&uart);
if (line < 0) {
printk(KERN_NOTICE "8250_hp300: register_serial() DCA scode %d"
@@ -210,7 +210,7 @@ static int __init hp300_8250_init(void)
#ifdef CONFIG_HPAPCI
int line;
unsigned long base;
- struct uart_port uport;
+ struct uart_8250_port uart;
struct hp300_port *port;
int i;
#endif
@@ -248,26 +248,26 @@ static int __init hp300_8250_init(void)
if (!port)
return -ENOMEM;
- memset(&uport, 0, sizeof(struct uart_port));
+ memset(&uart, 0, sizeof(uart));
base = (FRODO_BASE + FRODO_APCI_OFFSET(i));
/* Memory mapped I/O */
- uport.iotype = UPIO_MEM;
- uport.flags = UPF_SKIP_TEST | UPF_SHARE_IRQ \
+ uart.port.iotype = UPIO_MEM;
+ uart.port.flags = UPF_SKIP_TEST | UPF_SHARE_IRQ \
| UPF_BOOT_AUTOCONF;
/* XXX - no interrupt support yet */
- uport.irq = 0;
- uport.uartclk = HPAPCI_BAUD_BASE * 16;
- uport.mapbase = base;
- uport.membase = (char *)(base + DIO_VIRADDRBASE);
- uport.regshift = 2;
+ uart.port.irq = 0;
+ uart.port.uartclk = HPAPCI_BAUD_BASE * 16;
+ uart.port.mapbase = base;
+ uart.port.membase = (char *)(base + DIO_VIRADDRBASE);
+ uart.port.regshift = 2;
- line = serial8250_register_port(&uport);
+ line = serial8250_register_8250_port(&uart);
if (line < 0) {
printk(KERN_NOTICE "8250_hp300: register_serial() APCI"
- " %d irq %d failed\n", i, uport.irq);
+ " %d irq %d failed\n", i, uart.port.irq);
kfree(port);
continue;
}
diff --git a/drivers/tty/serial/8250/8250_pci.c b/drivers/tty/serial/8250/8250_pci.c
index 28e7c7cce89..fdab80a4e06 100644
--- a/drivers/tty/serial/8250/8250_pci.c
+++ b/drivers/tty/serial/8250/8250_pci.c
@@ -44,7 +44,7 @@ struct pci_serial_quirk {
int (*init)(struct pci_dev *dev);
int (*setup)(struct serial_private *,
const struct pciserial_board *,
- struct uart_port *, int);
+ struct uart_8250_port *, int);
void (*exit)(struct pci_dev *dev);
};
@@ -59,7 +59,7 @@ struct serial_private {
};
static int pci_default_setup(struct serial_private*,
- const struct pciserial_board*, struct uart_port*, int);
+ const struct pciserial_board*, struct uart_8250_port *, int);
static void moan_device(const char *str, struct pci_dev *dev)
{
@@ -74,7 +74,7 @@ static void moan_device(const char *str, struct pci_dev *dev)
}
static int
-setup_port(struct serial_private *priv, struct uart_port *port,
+setup_port(struct serial_private *priv, struct uart_8250_port *port,
int bar, int offset, int regshift)
{
struct pci_dev *dev = priv->dev;
@@ -93,17 +93,17 @@ setup_port(struct serial_private *priv, struct uart_port *port,
if (!priv->remapped_bar[bar])
return -ENOMEM;
- port->iotype = UPIO_MEM;
- port->iobase = 0;
- port->mapbase = base + offset;
- port->membase = priv->remapped_bar[bar] + offset;
- port->regshift = regshift;
+ port->port.iotype = UPIO_MEM;
+ port->port.iobase = 0;
+ port->port.mapbase = base + offset;
+ port->port.membase = priv->remapped_bar[bar] + offset;
+ port->port.regshift = regshift;
} else {
- port->iotype = UPIO_PORT;
- port->iobase = base + offset;
- port->mapbase = 0;
- port->membase = NULL;
- port->regshift = 0;
+ port->port.iotype = UPIO_PORT;
+ port->port.iobase = base + offset;
+ port->port.mapbase = 0;
+ port->port.membase = NULL;
+ port->port.regshift = 0;
}
return 0;
}
@@ -113,7 +113,7 @@ setup_port(struct serial_private *priv, struct uart_port *port,
*/
static int addidata_apci7800_setup(struct serial_private *priv,
const struct pciserial_board *board,
- struct uart_port *port, int idx)
+ struct uart_8250_port *port, int idx)
{
unsigned int bar = 0, offset = board->first_offset;
bar = FL_GET_BASE(board->flags);
@@ -140,7 +140,7 @@ static int addidata_apci7800_setup(struct serial_private *priv,
*/
static int
afavlab_setup(struct serial_private *priv, const struct pciserial_board *board,
- struct uart_port *port, int idx)
+ struct uart_8250_port *port, int idx)
{
unsigned int bar, offset = board->first_offset;
@@ -195,7 +195,7 @@ static int pci_hp_diva_init(struct pci_dev *dev)
static int
pci_hp_diva_setup(struct serial_private *priv,
const struct pciserial_board *board,
- struct uart_port *port, int idx)
+ struct uart_8250_port *port, int idx)
{
unsigned int offset = board->first_offset;
unsigned int bar = FL_GET_BASE(board->flags);
@@ -370,7 +370,7 @@ static void __devexit pci_ni8430_exit(struct pci_dev *dev)
/* SBS Technologies Inc. PMC-OCTPRO and P-OCTAL cards */
static int
sbs_setup(struct serial_private *priv, const struct pciserial_board *board,
- struct uart_port *port, int idx)
+ struct uart_8250_port *port, int idx)
{
unsigned int bar, offset = board->first_offset;
@@ -525,7 +525,7 @@ static int pci_siig_init(struct pci_dev *dev)
static int pci_siig_setup(struct serial_private *priv,
const struct pciserial_board *board,
- struct uart_port *port, int idx)
+ struct uart_8250_port *port, int idx)
{
unsigned int bar = FL_GET_BASE(board->flags) + idx, offset = 0;
@@ -619,7 +619,7 @@ static int pci_timedia_init(struct pci_dev *dev)
static int
pci_timedia_setup(struct serial_private *priv,
const struct pciserial_board *board,
- struct uart_port *port, int idx)
+ struct uart_8250_port *port, int idx)
{
unsigned int bar = 0, offset = board->first_offset;
@@ -653,7 +653,7 @@ pci_timedia_setup(struct serial_private *priv,
static int
titan_400l_800l_setup(struct serial_private *priv,
const struct pciserial_board *board,
- struct uart_port *port, int idx)
+ struct uart_8250_port *port, int idx)
{
unsigned int bar, offset = board->first_offset;
@@ -754,7 +754,7 @@ static int pci_ni8430_init(struct pci_dev *dev)
static int
pci_ni8430_setup(struct serial_private *priv,
const struct pciserial_board *board,
- struct uart_port *port, int idx)
+ struct uart_8250_port *port, int idx)
{
void __iomem *p;
unsigned long base, len;
@@ -781,7 +781,7 @@ pci_ni8430_setup(struct serial_private *priv,
static int pci_netmos_9900_setup(struct serial_private *priv,
const struct pciserial_board *board,
- struct uart_port *port, int idx)
+ struct uart_8250_port *port, int idx)
{
unsigned int bar;
@@ -1032,10 +1032,17 @@ static int pci_oxsemi_tornado_init(struct pci_dev *dev)
return number_uarts;
}
-static int
-pci_default_setup(struct serial_private *priv,
+static int pci_asix_setup(struct serial_private *priv,
const struct pciserial_board *board,
- struct uart_port *port, int idx)
+ struct uart_8250_port *port, int idx)
+{
+ port->bugs |= UART_BUG_PARITY;
+ return pci_default_setup(priv, board, port, idx);
+}
+
+static int pci_default_setup(struct serial_private *priv,
+ const struct pciserial_board *board,
+ struct uart_8250_port *port, int idx)
{
unsigned int bar, offset = board->first_offset, maxnr;
@@ -1057,15 +1064,15 @@ pci_default_setup(struct serial_private *priv,
static int
ce4100_serial_setup(struct serial_private *priv,
const struct pciserial_board *board,
- struct uart_port *port, int idx)
+ struct uart_8250_port *port, int idx)
{
int ret;
ret = setup_port(priv, port, 0, 0, board->reg_shift);
- port->iotype = UPIO_MEM32;
- port->type = PORT_XSCALE;
- port->flags = (port->flags | UPF_FIXED_PORT | UPF_FIXED_TYPE);
- port->regshift = 2;
+ port->port.iotype = UPIO_MEM32;
+ port->port.type = PORT_XSCALE;
+ port->port.flags = (port->port.flags | UPF_FIXED_PORT | UPF_FIXED_TYPE);
+ port->port.regshift = 2;
return ret;
}
@@ -1073,16 +1080,16 @@ ce4100_serial_setup(struct serial_private *priv,
static int
pci_omegapci_setup(struct serial_private *priv,
const struct pciserial_board *board,
- struct uart_port *port, int idx)
+ struct uart_8250_port *port, int idx)
{
return setup_port(priv, port, 2, idx * 8, 0);
}
static int skip_tx_en_setup(struct serial_private *priv,
const struct pciserial_board *board,
- struct uart_port *port, int idx)
+ struct uart_8250_port *port, int idx)
{
- port->flags |= UPF_NO_TXEN_TEST;
+ port->port.flags |= UPF_NO_TXEN_TEST;
printk(KERN_DEBUG "serial8250: skipping TxEn test for device "
"[%04x:%04x] subsystem [%04x:%04x]\n",
priv->dev->vendor,
@@ -1131,11 +1138,11 @@ static unsigned int kt_serial_in(struct uart_port *p, int offset)
static int kt_serial_setup(struct serial_private *priv,
const struct pciserial_board *board,
- struct uart_port *port, int idx)
+ struct uart_8250_port *port, int idx)
{
- port->flags |= UPF_BUG_THRE;
- port->serial_in = kt_serial_in;
- port->handle_break = kt_handle_break;
+ port->port.flags |= UPF_BUG_THRE;
+ port->port.serial_in = kt_serial_in;
+ port->port.handle_break = kt_handle_break;
return skip_tx_en_setup(priv, board, port, idx);
}
@@ -1151,9 +1158,19 @@ static int pci_eg20t_init(struct pci_dev *dev)
static int
pci_xr17c154_setup(struct serial_private *priv,
const struct pciserial_board *board,
- struct uart_port *port, int idx)
+ struct uart_8250_port *port, int idx)
+{
+ port->port.flags |= UPF_EXAR_EFR;
+ return pci_default_setup(priv, board, port, idx);
+}
+
+static int
+pci_wch_ch353_setup(struct serial_private *priv,
+ const struct pciserial_board *board,
+ struct uart_8250_port *port, int idx)
{
- port->flags |= UPF_EXAR_EFR;
+ port->port.flags |= UPF_FIXED_TYPE;
+ port->port.type = PORT_16550A;
return pci_default_setup(priv, board, port, idx);
}
@@ -1187,6 +1204,13 @@ pci_xr17c154_setup(struct serial_private *priv,
#define PCIE_DEVICE_ID_NEO_2_OX_IBM 0x00F6
#define PCI_DEVICE_ID_PLX_CRONYX_OMEGA 0xc001
#define PCI_DEVICE_ID_INTEL_PATSBURG_KT 0x1d3d
+#define PCI_VENDOR_ID_WCH 0x4348
+#define PCI_DEVICE_ID_WCH_CH353_4S 0x3453
+#define PCI_DEVICE_ID_WCH_CH353_2S1PF 0x5046
+#define PCI_DEVICE_ID_WCH_CH353_2S1P 0x7053
+#define PCI_VENDOR_ID_AGESTAR 0x5372
+#define PCI_DEVICE_ID_AGESTAR_9375 0x6872
+#define PCI_VENDOR_ID_ASIX 0x9710
/* Unknown vendors/cards - this should not be in linux/pci_ids.h */
#define PCI_SUBDEVICE_ID_UNKNOWN_0x1584 0x1584
@@ -1726,7 +1750,41 @@ static struct pci_serial_quirk pci_serial_quirks[] __refdata = {
.subvendor = PCI_ANY_ID,
.subdevice = PCI_ANY_ID,
.setup = pci_omegapci_setup,
- },
+ },
+ /* WCH CH353 2S1P card (16550 clone) */
+ {
+ .vendor = PCI_VENDOR_ID_WCH,
+ .device = PCI_DEVICE_ID_WCH_CH353_2S1P,
+ .subvendor = PCI_ANY_ID,
+ .subdevice = PCI_ANY_ID,
+ .setup = pci_wch_ch353_setup,
+ },
+ /* WCH CH353 4S card (16550 clone) */
+ {
+ .vendor = PCI_VENDOR_ID_WCH,
+ .device = PCI_DEVICE_ID_WCH_CH353_4S,
+ .subvendor = PCI_ANY_ID,
+ .subdevice = PCI_ANY_ID,
+ .setup = pci_wch_ch353_setup,
+ },
+ /* WCH CH353 2S1PF card (16550 clone) */
+ {
+ .vendor = PCI_VENDOR_ID_WCH,
+ .device = PCI_DEVICE_ID_WCH_CH353_2S1PF,
+ .subvendor = PCI_ANY_ID,
+ .subdevice = PCI_ANY_ID,
+ .setup = pci_wch_ch353_setup,
+ },
+ /*
+ * ASIX devices with FIFO bug
+ */
+ {
+ .vendor = PCI_VENDOR_ID_ASIX,
+ .device = PCI_ANY_ID,
+ .subvendor = PCI_ANY_ID,
+ .subdevice = PCI_ANY_ID,
+ .setup = pci_asix_setup,
+ },
/*
* Default "match everything" terminator entry
*/
@@ -1887,7 +1945,6 @@ enum pci_board_num_t {
pbn_panacom,
pbn_panacom2,
pbn_panacom4,
- pbn_exsys_4055,
pbn_plx_romulus,
pbn_oxsemi,
pbn_oxsemi_1_4000000,
@@ -2393,13 +2450,6 @@ static struct pciserial_board pci_boards[] __devinitdata = {
.reg_shift = 7,
},
- [pbn_exsys_4055] = {
- .flags = FL_BASE2,
- .num_ports = 4,
- .base_baud = 115200,
- .uart_offset = 8,
- },
-
/* I think this entry is broken - the first_offset looks wrong --rmk */
[pbn_plx_romulus] = {
.flags = FL_BASE2,
@@ -2624,10 +2674,14 @@ static struct pciserial_board pci_boards[] __devinitdata = {
},
};
-static const struct pci_device_id softmodem_blacklist[] = {
+static const struct pci_device_id blacklist[] = {
+ /* softmodems */
{ PCI_VDEVICE(AL, 0x5457), }, /* ALi Corporation M5457 AC'97 Modem */
{ PCI_VDEVICE(MOTOROLA, 0x3052), }, /* Motorola Si3052-based modem */
{ PCI_DEVICE(0x1543, 0x3052), }, /* Si3052-based modem, default IDs */
+
+ /* multi-io cards handled by parport_serial */
+ { PCI_DEVICE(0x4348, 0x7053), }, /* WCH CH353 2S1P */
};
/*
@@ -2638,7 +2692,7 @@ static const struct pci_device_id softmodem_blacklist[] = {
static int __devinit
serial_pci_guess_board(struct pci_dev *dev, struct pciserial_board *board)
{
- const struct pci_device_id *blacklist;
+ const struct pci_device_id *bldev;
int num_iomem, num_port, first_port = -1, i;
/*
@@ -2655,13 +2709,13 @@ serial_pci_guess_board(struct pci_dev *dev, struct pciserial_board *board)
/*
* Do not access blacklisted devices that are known not to
- * feature serial ports.
+ * feature serial ports or are handled by other modules.
*/
- for (blacklist = softmodem_blacklist;
- blacklist < softmodem_blacklist + ARRAY_SIZE(softmodem_blacklist);
- blacklist++) {
- if (dev->vendor == blacklist->vendor &&
- dev->device == blacklist->device)
+ for (bldev = blacklist;
+ bldev < blacklist + ARRAY_SIZE(blacklist);
+ bldev++) {
+ if (dev->vendor == bldev->vendor &&
+ dev->device == bldev->device)
return -ENODEV;
}
@@ -2728,7 +2782,7 @@ serial_pci_matches(const struct pciserial_board *board,
struct serial_private *
pciserial_init_ports(struct pci_dev *dev, const struct pciserial_board *board)
{
- struct uart_port serial_port;
+ struct uart_8250_port uart;
struct serial_private *priv;
struct pci_serial_quirk *quirk;
int rc, nr_ports, i;
@@ -2768,22 +2822,22 @@ pciserial_init_ports(struct pci_dev *dev, const struct pciserial_board *board)
priv->dev = dev;
priv->quirk = quirk;
- memset(&serial_port, 0, sizeof(struct uart_port));
- serial_port.flags = UPF_SKIP_TEST | UPF_BOOT_AUTOCONF | UPF_SHARE_IRQ;
- serial_port.uartclk = board->base_baud * 16;
- serial_port.irq = get_pci_irq(dev, board);
- serial_port.dev = &dev->dev;
+ memset(&uart, 0, sizeof(uart));
+ uart.port.flags = UPF_SKIP_TEST | UPF_BOOT_AUTOCONF | UPF_SHARE_IRQ;
+ uart.port.uartclk = board->base_baud * 16;
+ uart.port.irq = get_pci_irq(dev, board);
+ uart.port.dev = &dev->dev;
for (i = 0; i < nr_ports; i++) {
- if (quirk->setup(priv, board, &serial_port, i))
+ if (quirk->setup(priv, board, &uart, i))
break;
#ifdef SERIAL_DEBUG_PCI
printk(KERN_DEBUG "Setup PCI port: port %lx, irq %d, type %d\n",
- serial_port.iobase, serial_port.irq, serial_port.iotype);
+ uart.port.iobase, uart.port.irq, uart.port.iotype);
#endif
- priv->line[i] = serial8250_register_port(&serial_port);
+ priv->line[i] = serial8250_register_8250_port(&uart);
if (priv->line[i] < 0) {
printk(KERN_WARNING "Couldn't register serial port %s: %d\n", pci_name(dev), priv->line[i]);
break;
@@ -3193,7 +3247,7 @@ static struct pci_device_id serial_pci_tbl[] = {
{ PCI_VENDOR_ID_PLX, PCI_DEVICE_ID_PLX_9050,
PCI_SUBVENDOR_ID_EXSYS,
PCI_SUBDEVICE_ID_EXSYS_4055, 0, 0,
- pbn_exsys_4055 },
+ pbn_b2_4_115200 },
/*
* Megawolf Romulus PCI Serial Card, from Mike Hudson
* (Exoray@isys.ca)
@@ -4179,6 +4233,25 @@ static struct pci_device_id serial_pci_tbl[] = {
pbn_omegapci },
/*
+ * AgeStar as-prs2-009
+ */
+ { PCI_VENDOR_ID_AGESTAR, PCI_DEVICE_ID_AGESTAR_9375,
+ PCI_ANY_ID, PCI_ANY_ID,
+ 0, 0, pbn_b0_bt_2_115200 },
+
+ /*
+ * WCH CH353 series devices: The 2S1P is handled by parport_serial
+ * so not listed here.
+ */
+ { PCI_VENDOR_ID_WCH, PCI_DEVICE_ID_WCH_CH353_4S,
+ PCI_ANY_ID, PCI_ANY_ID,
+ 0, 0, pbn_b0_bt_4_115200 },
+
+ { PCI_VENDOR_ID_WCH, PCI_DEVICE_ID_WCH_CH353_2S1PF,
+ PCI_ANY_ID, PCI_ANY_ID,
+ 0, 0, pbn_b0_bt_2_115200 },
+
+ /*
* These entries match devices with class COMMUNICATION_SERIAL,
* COMMUNICATION_MODEM or COMMUNICATION_MULTISERIAL
*/
diff --git a/drivers/tty/serial/8250/8250_pnp.c b/drivers/tty/serial/8250/8250_pnp.c
index a2f236510ff..fde5aa60d51 100644
--- a/drivers/tty/serial/8250/8250_pnp.c
+++ b/drivers/tty/serial/8250/8250_pnp.c
@@ -424,7 +424,7 @@ static int __devinit serial_pnp_guess_board(struct pnp_dev *dev, int *flags)
static int __devinit
serial_pnp_probe(struct pnp_dev *dev, const struct pnp_device_id *dev_id)
{
- struct uart_port port;
+ struct uart_8250_port uart;
int ret, line, flags = dev_id->driver_data;
if (flags & UNKNOWN_DEV) {
@@ -433,32 +433,32 @@ serial_pnp_probe(struct pnp_dev *dev, const struct pnp_device_id *dev_id)
return ret;
}
- memset(&port, 0, sizeof(struct uart_port));
+ memset(&uart, 0, sizeof(uart));
if (pnp_irq_valid(dev, 0))
- port.irq = pnp_irq(dev, 0);
+ uart.port.irq = pnp_irq(dev, 0);
if (pnp_port_valid(dev, 0)) {
- port.iobase = pnp_port_start(dev, 0);
- port.iotype = UPIO_PORT;
+ uart.port.iobase = pnp_port_start(dev, 0);
+ uart.port.iotype = UPIO_PORT;
} else if (pnp_mem_valid(dev, 0)) {
- port.mapbase = pnp_mem_start(dev, 0);
- port.iotype = UPIO_MEM;
- port.flags = UPF_IOREMAP;
+ uart.port.mapbase = pnp_mem_start(dev, 0);
+ uart.port.iotype = UPIO_MEM;
+ uart.port.flags = UPF_IOREMAP;
} else
return -ENODEV;
#ifdef SERIAL_DEBUG_PNP
printk(KERN_DEBUG
"Setup PNP port: port %x, mem 0x%lx, irq %d, type %d\n",
- port.iobase, port.mapbase, port.irq, port.iotype);
+ uart.port.iobase, uart.port.mapbase, uart.port.irq, uart.port.iotype);
#endif
- port.flags |= UPF_SKIP_TEST | UPF_BOOT_AUTOCONF;
+ uart.port.flags |= UPF_SKIP_TEST | UPF_BOOT_AUTOCONF;
if (pnp_irq_flags(dev, 0) & IORESOURCE_IRQ_SHAREABLE)
- port.flags |= UPF_SHARE_IRQ;
- port.uartclk = 1843200;
- port.dev = &dev->dev;
+ uart.port.flags |= UPF_SHARE_IRQ;
+ uart.port.uartclk = 1843200;
+ uart.port.dev = &dev->dev;
- line = serial8250_register_port(&port);
+ line = serial8250_register_8250_port(&uart);
if (line < 0)
return -ENODEV;
diff --git a/drivers/tty/serial/8250/serial_cs.c b/drivers/tty/serial/8250/serial_cs.c
index 29b695d041e..b7d48b34639 100644
--- a/drivers/tty/serial/8250/serial_cs.c
+++ b/drivers/tty/serial/8250/serial_cs.c
@@ -73,7 +73,7 @@ struct serial_quirk {
unsigned int prodid;
int multi; /* 1 = multifunction, > 1 = # ports */
void (*config)(struct pcmcia_device *);
- void (*setup)(struct pcmcia_device *, struct uart_port *);
+ void (*setup)(struct pcmcia_device *, struct uart_8250_port *);
void (*wakeup)(struct pcmcia_device *);
int (*post)(struct pcmcia_device *);
};
@@ -105,9 +105,9 @@ struct serial_cfg_mem {
* Elan VPU16551 UART with 14.7456MHz oscillator
* manfid 0x015D, 0x4C45
*/
-static void quirk_setup_brainboxes_0104(struct pcmcia_device *link, struct uart_port *port)
+static void quirk_setup_brainboxes_0104(struct pcmcia_device *link, struct uart_8250_port *uart)
{
- port->uartclk = 14745600;
+ uart->port.uartclk = 14745600;
}
static int quirk_post_ibm(struct pcmcia_device *link)
@@ -343,25 +343,25 @@ static void serial_detach(struct pcmcia_device *link)
static int setup_serial(struct pcmcia_device *handle, struct serial_info * info,
unsigned int iobase, int irq)
{
- struct uart_port port;
+ struct uart_8250_port uart;
int line;
- memset(&port, 0, sizeof (struct uart_port));
- port.iobase = iobase;
- port.irq = irq;
- port.flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST | UPF_SHARE_IRQ;
- port.uartclk = 1843200;
- port.dev = &handle->dev;
+ memset(&uart, 0, sizeof(uart));
+ uart.port.iobase = iobase;
+ uart.port.irq = irq;
+ uart.port.flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST | UPF_SHARE_IRQ;
+ uart.port.uartclk = 1843200;
+ uart.port.dev = &handle->dev;
if (buggy_uart)
- port.flags |= UPF_BUGGY_UART;
+ uart.port.flags |= UPF_BUGGY_UART;
if (info->quirk && info->quirk->setup)
- info->quirk->setup(handle, &port);
+ info->quirk->setup(handle, &uart);
- line = serial8250_register_port(&port);
+ line = serial8250_register_8250_port(&uart);
if (line < 0) {
- printk(KERN_NOTICE "serial_cs: serial8250_register_port() at "
- "0x%04lx, irq %d failed\n", (u_long)iobase, irq);
+ pr_err("serial_cs: serial8250_register_8250_port() at 0x%04lx, irq %d failed\n",
+ (unsigned long)iobase, irq);
return -EINVAL;
}
diff --git a/drivers/tty/serial/Kconfig b/drivers/tty/serial/Kconfig
index 4720b4ba096..26907cf2574 100644
--- a/drivers/tty/serial/Kconfig
+++ b/drivers/tty/serial/Kconfig
@@ -257,12 +257,19 @@ config SERIAL_MAX3100
help
MAX3100 chip support
-config SERIAL_MAX3107
- tristate "MAX3107 support"
+config SERIAL_MAX310X
+ bool "MAX310X support"
depends on SPI
select SERIAL_CORE
+ select REGMAP_SPI if SPI
+ default n
help
- MAX3107 chip support
+ This selects support for an advanced UART from Maxim (Dallas).
+ Supported ICs are MAX3107, MAX3108.
+ Each IC contains 128 words each of receive and transmit FIFO
+ that can be controlled through I2C or high-speed SPI.
+
+ Say Y here if you want to support this ICs.
config SERIAL_DZ
bool "DECstation DZ serial driver"
@@ -704,6 +711,25 @@ config SERIAL_PNX8XXX_CONSOLE
If you have a MIPS-based Philips SoC such as PNX8550 or PNX8330
and you want to use serial console, say Y. Otherwise, say N.
+config SERIAL_HS_LPC32XX
+ tristate "LPC32XX high speed serial port support"
+ depends on ARCH_LPC32XX && OF
+ select SERIAL_CORE
+ help
+ Support for the LPC32XX high speed serial ports (up to 900kbps).
+ Those are UARTs completely different from the Standard UARTs on the
+ LPC32XX SoC.
+ Choose M or Y here to build this driver.
+
+config SERIAL_HS_LPC32XX_CONSOLE
+ bool "Enable LPC32XX high speed UART serial console"
+ depends on SERIAL_HS_LPC32XX
+ select SERIAL_CORE_CONSOLE
+ help
+ If you would like to be able to use one of the high speed serial
+ ports on the LPC32XX as the console, you can do so by answering
+ Y to this option.
+
config SERIAL_CORE
tristate
@@ -1104,6 +1130,24 @@ config SERIAL_SC26XX_CONSOLE
help
Support for Console on SC2681/SC2692 serial ports.
+config SERIAL_SCCNXP
+ bool "SCCNXP serial port support"
+ depends on !SERIAL_SC26XX
+ select SERIAL_CORE
+ default n
+ help
+ This selects support for an advanced UART from NXP (Philips).
+ Supported ICs are SCC2681, SCC2691, SCC2692, SC28L91, SC28L92,
+ SC28L202, SCC68681 and SCC68692.
+ Positioned as a replacement for the driver SC26XX.
+
+config SERIAL_SCCNXP_CONSOLE
+ bool "Console on SCCNXP serial port"
+ depends on SERIAL_SCCNXP
+ select SERIAL_CORE_CONSOLE
+ help
+ Support for console on SCCNXP serial ports.
+
config SERIAL_BFIN_SPORT
tristate "Blackfin SPORT emulate UART"
depends on BLACKFIN
diff --git a/drivers/tty/serial/Makefile b/drivers/tty/serial/Makefile
index 7257c5d898a..ce88667cfd1 100644
--- a/drivers/tty/serial/Makefile
+++ b/drivers/tty/serial/Makefile
@@ -28,12 +28,13 @@ obj-$(CONFIG_SERIAL_BFIN) += bfin_uart.o
obj-$(CONFIG_SERIAL_BFIN_SPORT) += bfin_sport_uart.o
obj-$(CONFIG_SERIAL_SAMSUNG) += samsung.o
obj-$(CONFIG_SERIAL_MAX3100) += max3100.o
-obj-$(CONFIG_SERIAL_MAX3107) += max3107.o
+obj-$(CONFIG_SERIAL_MAX310X) += max310x.o
obj-$(CONFIG_SERIAL_IP22_ZILOG) += ip22zilog.o
obj-$(CONFIG_SERIAL_MUX) += mux.o
obj-$(CONFIG_SERIAL_68328) += 68328serial.o
obj-$(CONFIG_SERIAL_MCF) += mcf.o
obj-$(CONFIG_SERIAL_PMACZILOG) += pmac_zilog.o
+obj-$(CONFIG_SERIAL_HS_LPC32XX) += lpc32xx_hs.o
obj-$(CONFIG_SERIAL_DZ) += dz.o
obj-$(CONFIG_SERIAL_ZS) += zs.o
obj-$(CONFIG_SERIAL_SH_SCI) += sh-sci.o
@@ -47,6 +48,7 @@ obj-$(CONFIG_SERIAL_MPSC) += mpsc.o
obj-$(CONFIG_SERIAL_SB1250_DUART) += sb1250-duart.o
obj-$(CONFIG_ETRAX_SERIAL) += crisv10.o
obj-$(CONFIG_SERIAL_SC26XX) += sc26xx.o
+obj-$(CONFIG_SERIAL_SCCNXP) += sccnxp.o
obj-$(CONFIG_SERIAL_JSM) += jsm/
obj-$(CONFIG_SERIAL_TXX9) += serial_txx9.o
obj-$(CONFIG_SERIAL_VR41XX) += vr41xx_siu.o
diff --git a/drivers/tty/serial/altera_uart.c b/drivers/tty/serial/altera_uart.c
index 1f0330915d5..15d80b9fb30 100644
--- a/drivers/tty/serial/altera_uart.c
+++ b/drivers/tty/serial/altera_uart.c
@@ -591,7 +591,7 @@ static int __devinit altera_uart_probe(struct platform_device *pdev)
port->ops = &altera_uart_ops;
port->flags = UPF_BOOT_AUTOCONF;
- dev_set_drvdata(&pdev->dev, port);
+ platform_set_drvdata(pdev, port);
uart_add_one_port(&altera_uart_driver, port);
@@ -600,11 +600,11 @@ static int __devinit altera_uart_probe(struct platform_device *pdev)
static int __devexit altera_uart_remove(struct platform_device *pdev)
{
- struct uart_port *port = dev_get_drvdata(&pdev->dev);
+ struct uart_port *port = platform_get_drvdata(pdev);
if (port) {
uart_remove_one_port(&altera_uart_driver, port);
- dev_set_drvdata(&pdev->dev, NULL);
+ platform_set_drvdata(pdev, NULL);
port->mapbase = 0;
}
diff --git a/drivers/tty/serial/amba-pl010.c b/drivers/tty/serial/amba-pl010.c
index 0d91a540bf1..22317dd1647 100644
--- a/drivers/tty/serial/amba-pl010.c
+++ b/drivers/tty/serial/amba-pl010.c
@@ -312,16 +312,12 @@ static int pl010_startup(struct uart_port *port)
struct uart_amba_port *uap = (struct uart_amba_port *)port;
int retval;
- retval = clk_prepare(uap->clk);
- if (retval)
- goto out;
-
/*
* Try to enable the clock producer.
*/
- retval = clk_enable(uap->clk);
+ retval = clk_prepare_enable(uap->clk);
if (retval)
- goto clk_unprep;
+ goto out;
uap->port.uartclk = clk_get_rate(uap->clk);
@@ -346,9 +342,7 @@ static int pl010_startup(struct uart_port *port)
return 0;
clk_dis:
- clk_disable(uap->clk);
- clk_unprep:
- clk_unprepare(uap->clk);
+ clk_disable_unprepare(uap->clk);
out:
return retval;
}
@@ -375,8 +369,7 @@ static void pl010_shutdown(struct uart_port *port)
/*
* Shut down the clock producer
*/
- clk_disable(uap->clk);
- clk_unprepare(uap->clk);
+ clk_disable_unprepare(uap->clk);
}
static void
diff --git a/drivers/tty/serial/amba-pl011.c b/drivers/tty/serial/amba-pl011.c
index d3553b5d3fc..cede9387664 100644
--- a/drivers/tty/serial/amba-pl011.c
+++ b/drivers/tty/serial/amba-pl011.c
@@ -52,6 +52,8 @@
#include <linux/scatterlist.h>
#include <linux/delay.h>
#include <linux/types.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
#include <linux/pinctrl/consumer.h>
#include <linux/sizes.h>
@@ -75,7 +77,6 @@ struct vendor_data {
unsigned int lcrh_tx;
unsigned int lcrh_rx;
bool oversampling;
- bool interrupt_may_hang; /* vendor-specific */
bool dma_threshold;
bool cts_event_workaround;
};
@@ -96,7 +97,6 @@ static struct vendor_data vendor_st = {
.lcrh_tx = ST_UART011_LCRH_TX,
.lcrh_rx = ST_UART011_LCRH_RX,
.oversampling = true,
- .interrupt_may_hang = true,
.dma_threshold = true,
.cts_event_workaround = true,
};
@@ -147,7 +147,6 @@ struct uart_amba_port {
unsigned int old_cr; /* state during shutdown */
bool autorts;
char type[12];
- bool interrupt_may_hang; /* vendor-specific */
#ifdef CONFIG_DMA_ENGINE
/* DMA stuff */
bool using_tx_dma;
@@ -1215,14 +1214,14 @@ static irqreturn_t pl011_int(int irq, void *dev_id)
return IRQ_RETVAL(handled);
}
-static unsigned int pl01x_tx_empty(struct uart_port *port)
+static unsigned int pl011_tx_empty(struct uart_port *port)
{
struct uart_amba_port *uap = (struct uart_amba_port *)port;
unsigned int status = readw(uap->port.membase + UART01x_FR);
return status & (UART01x_FR_BUSY|UART01x_FR_TXFF) ? 0 : TIOCSER_TEMT;
}
-static unsigned int pl01x_get_mctrl(struct uart_port *port)
+static unsigned int pl011_get_mctrl(struct uart_port *port)
{
struct uart_amba_port *uap = (struct uart_amba_port *)port;
unsigned int result = 0;
@@ -1285,7 +1284,7 @@ static void pl011_break_ctl(struct uart_port *port, int break_state)
}
#ifdef CONFIG_CONSOLE_POLL
-static int pl010_get_poll_char(struct uart_port *port)
+static int pl011_get_poll_char(struct uart_port *port)
{
struct uart_amba_port *uap = (struct uart_amba_port *)port;
unsigned int status;
@@ -1297,7 +1296,7 @@ static int pl010_get_poll_char(struct uart_port *port)
return readw(uap->port.membase + UART01x_DR);
}
-static void pl010_put_poll_char(struct uart_port *port,
+static void pl011_put_poll_char(struct uart_port *port,
unsigned char ch)
{
struct uart_amba_port *uap = (struct uart_amba_port *)port;
@@ -1324,16 +1323,12 @@ static int pl011_startup(struct uart_port *port)
"could not set default pins\n");
}
- retval = clk_prepare(uap->clk);
- if (retval)
- goto out;
-
/*
* Try to enable the clock producer.
*/
- retval = clk_enable(uap->clk);
+ retval = clk_prepare_enable(uap->clk);
if (retval)
- goto clk_unprep;
+ goto out;
uap->port.uartclk = clk_get_rate(uap->clk);
@@ -1411,9 +1406,7 @@ static int pl011_startup(struct uart_port *port)
return 0;
clk_dis:
- clk_disable(uap->clk);
- clk_unprep:
- clk_unprepare(uap->clk);
+ clk_disable_unprepare(uap->clk);
out:
return retval;
}
@@ -1473,8 +1466,7 @@ static void pl011_shutdown(struct uart_port *port)
/*
* Shut down the clock producer
*/
- clk_disable(uap->clk);
- clk_unprepare(uap->clk);
+ clk_disable_unprepare(uap->clk);
/* Optionally let pins go into sleep states */
if (!IS_ERR(uap->pins_sleep)) {
retval = pinctrl_select_state(uap->pinctrl, uap->pins_sleep);
@@ -1637,7 +1629,7 @@ static const char *pl011_type(struct uart_port *port)
/*
* Release the memory region(s) being used by 'port'
*/
-static void pl010_release_port(struct uart_port *port)
+static void pl011_release_port(struct uart_port *port)
{
release_mem_region(port->mapbase, SZ_4K);
}
@@ -1645,7 +1637,7 @@ static void pl010_release_port(struct uart_port *port)
/*
* Request the memory region(s) being used by 'port'
*/
-static int pl010_request_port(struct uart_port *port)
+static int pl011_request_port(struct uart_port *port)
{
return request_mem_region(port->mapbase, SZ_4K, "uart-pl011")
!= NULL ? 0 : -EBUSY;
@@ -1654,18 +1646,18 @@ static int pl010_request_port(struct uart_port *port)
/*
* Configure/autoconfigure the port.
*/
-static void pl010_config_port(struct uart_port *port, int flags)
+static void pl011_config_port(struct uart_port *port, int flags)
{
if (flags & UART_CONFIG_TYPE) {
port->type = PORT_AMBA;
- pl010_request_port(port);
+ pl011_request_port(port);
}
}
/*
* verify the new serial_struct (for TIOCSSERIAL).
*/
-static int pl010_verify_port(struct uart_port *port, struct serial_struct *ser)
+static int pl011_verify_port(struct uart_port *port, struct serial_struct *ser)
{
int ret = 0;
if (ser->type != PORT_UNKNOWN && ser->type != PORT_AMBA)
@@ -1678,9 +1670,9 @@ static int pl010_verify_port(struct uart_port *port, struct serial_struct *ser)
}
static struct uart_ops amba_pl011_pops = {
- .tx_empty = pl01x_tx_empty,
+ .tx_empty = pl011_tx_empty,
.set_mctrl = pl011_set_mctrl,
- .get_mctrl = pl01x_get_mctrl,
+ .get_mctrl = pl011_get_mctrl,
.stop_tx = pl011_stop_tx,
.start_tx = pl011_start_tx,
.stop_rx = pl011_stop_rx,
@@ -1691,13 +1683,13 @@ static struct uart_ops amba_pl011_pops = {
.flush_buffer = pl011_dma_flush_buffer,
.set_termios = pl011_set_termios,
.type = pl011_type,
- .release_port = pl010_release_port,
- .request_port = pl010_request_port,
- .config_port = pl010_config_port,
- .verify_port = pl010_verify_port,
+ .release_port = pl011_release_port,
+ .request_port = pl011_request_port,
+ .config_port = pl011_config_port,
+ .verify_port = pl011_verify_port,
#ifdef CONFIG_CONSOLE_POLL
- .poll_get_char = pl010_get_poll_char,
- .poll_put_char = pl010_put_poll_char,
+ .poll_get_char = pl011_get_poll_char,
+ .poll_put_char = pl011_put_poll_char,
#endif
};
@@ -1869,6 +1861,38 @@ static struct uart_driver amba_reg = {
.cons = AMBA_CONSOLE,
};
+static int pl011_probe_dt_alias(int index, struct device *dev)
+{
+ struct device_node *np;
+ static bool seen_dev_with_alias = false;
+ static bool seen_dev_without_alias = false;
+ int ret = index;
+
+ if (!IS_ENABLED(CONFIG_OF))
+ return ret;
+
+ np = dev->of_node;
+ if (!np)
+ return ret;
+
+ ret = of_alias_get_id(np, "serial");
+ if (IS_ERR_VALUE(ret)) {
+ seen_dev_without_alias = true;
+ ret = index;
+ } else {
+ seen_dev_with_alias = true;
+ if (ret >= ARRAY_SIZE(amba_ports) || amba_ports[ret] != NULL) {
+ dev_warn(dev, "requested serial port %d not available.\n", ret);
+ ret = index;
+ }
+ }
+
+ if (seen_dev_with_alias && seen_dev_without_alias)
+ dev_warn(dev, "aliased and non-aliased serial devices found in device tree. Serial port enumeration may be unpredictable.\n");
+
+ return ret;
+}
+
static int pl011_probe(struct amba_device *dev, const struct amba_id *id)
{
struct uart_amba_port *uap;
@@ -1891,6 +1915,8 @@ static int pl011_probe(struct amba_device *dev, const struct amba_id *id)
goto out;
}
+ i = pl011_probe_dt_alias(i, &dev->dev);
+
base = ioremap(dev->res.start, resource_size(&dev->res));
if (!base) {
ret = -ENOMEM;
@@ -1923,7 +1949,6 @@ static int pl011_probe(struct amba_device *dev, const struct amba_id *id)
uap->lcrh_tx = vendor->lcrh_tx;
uap->old_cr = 0;
uap->fifosize = vendor->fifosize;
- uap->interrupt_may_hang = vendor->interrupt_may_hang;
uap->port.dev = &dev->dev;
uap->port.mapbase = dev->res.start;
uap->port.membase = base;
diff --git a/drivers/tty/serial/bfin_uart.c b/drivers/tty/serial/bfin_uart.c
index bd97db23985..9242d56ba26 100644
--- a/drivers/tty/serial/bfin_uart.c
+++ b/drivers/tty/serial/bfin_uart.c
@@ -182,7 +182,7 @@ static void bfin_serial_start_tx(struct uart_port *port)
* To avoid losting RX interrupt, we reset IR function
* before sending data.
*/
- if (tty->termios->c_line == N_IRDA)
+ if (tty->termios.c_line == N_IRDA)
bfin_serial_reset_irda(port);
#ifdef CONFIG_SERIAL_BFIN_DMA
diff --git a/drivers/tty/serial/crisv10.c b/drivers/tty/serial/crisv10.c
index 80b6b1b1f72..35ee6a2c687 100644
--- a/drivers/tty/serial/crisv10.c
+++ b/drivers/tty/serial/crisv10.c
@@ -955,7 +955,7 @@ static const struct control_pins e100_modem_pins[NR_PORTS] =
/* Calculate the chartime depending on baudrate, numbor of bits etc. */
static void update_char_time(struct e100_serial * info)
{
- tcflag_t cflags = info->port.tty->termios->c_cflag;
+ tcflag_t cflags = info->port.tty->termios.c_cflag;
int bits;
/* calc. number of bits / data byte */
@@ -1473,7 +1473,7 @@ rs_stop(struct tty_struct *tty)
xoff = IO_FIELD(R_SERIAL0_XOFF, xoff_char,
STOP_CHAR(info->port.tty));
xoff |= IO_STATE(R_SERIAL0_XOFF, tx_stop, stop);
- if (tty->termios->c_iflag & IXON ) {
+ if (tty->termios.c_iflag & IXON ) {
xoff |= IO_STATE(R_SERIAL0_XOFF, auto_xoff, enable);
}
@@ -1496,7 +1496,7 @@ rs_start(struct tty_struct *tty)
info->xmit.tail,SERIAL_XMIT_SIZE)));
xoff = IO_FIELD(R_SERIAL0_XOFF, xoff_char, STOP_CHAR(tty));
xoff |= IO_STATE(R_SERIAL0_XOFF, tx_stop, enable);
- if (tty->termios->c_iflag & IXON ) {
+ if (tty->termios.c_iflag & IXON ) {
xoff |= IO_STATE(R_SERIAL0_XOFF, auto_xoff, enable);
}
@@ -2929,7 +2929,7 @@ shutdown(struct e100_serial * info)
descr[i].buf = 0;
}
- if (!info->port.tty || (info->port.tty->termios->c_cflag & HUPCL)) {
+ if (!info->port.tty || (info->port.tty->termios.c_cflag & HUPCL)) {
/* hang up DTR and RTS if HUPCL is enabled */
e100_dtr(info, 0);
e100_rts(info, 0); /* could check CRTSCTS before doing this */
@@ -2953,12 +2953,12 @@ change_speed(struct e100_serial *info)
unsigned long flags;
/* first some safety checks */
- if (!info->port.tty || !info->port.tty->termios)
+ if (!info->port.tty)
return;
if (!info->ioport)
return;
- cflag = info->port.tty->termios->c_cflag;
+ cflag = info->port.tty->termios.c_cflag;
/* possibly, the tx/rx should be disabled first to do this safely */
@@ -3088,7 +3088,7 @@ change_speed(struct e100_serial *info)
info->ioport[REG_REC_CTRL] = info->rx_ctrl;
xoff = IO_FIELD(R_SERIAL0_XOFF, xoff_char, STOP_CHAR(info->port.tty));
xoff |= IO_STATE(R_SERIAL0_XOFF, tx_stop, enable);
- if (info->port.tty->termios->c_iflag & IXON ) {
+ if (info->port.tty->termios.c_iflag & IXON ) {
DFLOW(DEBUG_LOG(info->line, "FLOW XOFF enabled 0x%02X\n",
STOP_CHAR(info->port.tty)));
xoff |= IO_STATE(R_SERIAL0_XOFF, auto_xoff, enable);
@@ -3355,7 +3355,7 @@ rs_throttle(struct tty_struct * tty)
DFLOW(DEBUG_LOG(info->line,"rs_throttle %lu\n", tty->ldisc.chars_in_buffer(tty)));
/* Do RTS before XOFF since XOFF might take some time */
- if (tty->termios->c_cflag & CRTSCTS) {
+ if (tty->termios.c_cflag & CRTSCTS) {
/* Turn off RTS line */
e100_rts(info, 0);
}
@@ -3377,7 +3377,7 @@ rs_unthrottle(struct tty_struct * tty)
DFLOW(DEBUG_LOG(info->line,"rs_unthrottle ldisc %d\n", tty->ldisc.chars_in_buffer(tty)));
DFLOW(DEBUG_LOG(info->line,"rs_unthrottle flip.count: %i\n", tty->flip.count));
/* Do RTS before XOFF since XOFF might take some time */
- if (tty->termios->c_cflag & CRTSCTS) {
+ if (tty->termios.c_cflag & CRTSCTS) {
/* Assert RTS line */
e100_rts(info, 1);
}
@@ -3748,7 +3748,7 @@ rs_set_termios(struct tty_struct *tty, struct ktermios *old_termios)
/* Handle turning off CRTSCTS */
if ((old_termios->c_cflag & CRTSCTS) &&
- !(tty->termios->c_cflag & CRTSCTS)) {
+ !(tty->termios.c_cflag & CRTSCTS)) {
tty->hw_stopped = 0;
rs_start(tty);
}
@@ -3815,7 +3815,7 @@ rs_close(struct tty_struct *tty, struct file * filp)
* separate termios for callout and dialin.
*/
if (info->flags & ASYNC_NORMAL_ACTIVE)
- info->normal_termios = *tty->termios;
+ info->normal_termios = tty->termios;
/*
* Now we wait for the transmit buffer to clear; and we notify
* the line discipline to only process XON/XOFF characters.
@@ -3976,7 +3976,7 @@ block_til_ready(struct tty_struct *tty, struct file * filp,
*/
if (tty_hung_up_p(filp) ||
(info->flags & ASYNC_CLOSING)) {
- wait_event_interruptible_tty(info->close_wait,
+ wait_event_interruptible_tty(tty, info->close_wait,
!(info->flags & ASYNC_CLOSING));
#ifdef SERIAL_DO_RESTART
if (info->flags & ASYNC_HUP_NOTIFY)
@@ -3998,7 +3998,7 @@ block_til_ready(struct tty_struct *tty, struct file * filp,
return 0;
}
- if (tty->termios->c_cflag & CLOCAL) {
+ if (tty->termios.c_cflag & CLOCAL) {
do_clocal = 1;
}
@@ -4052,9 +4052,9 @@ block_til_ready(struct tty_struct *tty, struct file * filp,
printk("block_til_ready blocking: ttyS%d, count = %d\n",
info->line, info->count);
#endif
- tty_unlock();
+ tty_unlock(tty);
schedule();
- tty_lock();
+ tty_lock(tty);
}
set_current_state(TASK_RUNNING);
remove_wait_queue(&info->open_wait, &wait);
@@ -4115,7 +4115,7 @@ rs_open(struct tty_struct *tty, struct file * filp)
*/
if (tty_hung_up_p(filp) ||
(info->flags & ASYNC_CLOSING)) {
- wait_event_interruptible_tty(info->close_wait,
+ wait_event_interruptible_tty(tty, info->close_wait,
!(info->flags & ASYNC_CLOSING));
#ifdef SERIAL_DO_RESTART
return ((info->flags & ASYNC_HUP_NOTIFY) ?
@@ -4219,7 +4219,7 @@ rs_open(struct tty_struct *tty, struct file * filp)
}
if ((info->count == 1) && (info->flags & ASYNC_SPLIT_TERMIOS)) {
- *tty->termios = info->normal_termios;
+ tty->termios = info->normal_termios;
change_speed(info);
}
@@ -4443,14 +4443,12 @@ static int __init rs_init(void)
B115200 | CS8 | CREAD | HUPCL | CLOCAL; /* is normally B9600 default... */
driver->init_termios.c_ispeed = 115200;
driver->init_termios.c_ospeed = 115200;
- driver->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV;
+ driver->flags = TTY_DRIVER_REAL_RAW;
tty_set_operations(driver, &rs_ops);
serial_driver = driver;
- if (tty_register_driver(driver))
- panic("Couldn't register serial driver\n");
- /* do some initializing for the separate ports */
+ /* do some initializing for the separate ports */
for (i = 0, info = rs_table; i < NR_PORTS; i++,info++) {
if (info->enabled) {
if (cris_request_io_interface(info->io_if,
@@ -4502,7 +4500,12 @@ static int __init rs_init(void)
printk(KERN_INFO "%s%d at %p is a builtin UART with DMA\n",
serial_driver->name, info->line, info->ioport);
}
+ tty_port_link_device(&info->port, driver, i);
}
+
+ if (tty_register_driver(driver))
+ panic("Couldn't register serial driver\n");
+
#ifdef CONFIG_ETRAX_FAST_TIMER
#ifdef CONFIG_ETRAX_SERIAL_FAST_TIMER
memset(fast_timers, 0, sizeof(fast_timers));
diff --git a/drivers/tty/serial/ifx6x60.c b/drivers/tty/serial/ifx6x60.c
index 3ad079ffd04..5b9bc19ed13 100644
--- a/drivers/tty/serial/ifx6x60.c
+++ b/drivers/tty/serial/ifx6x60.c
@@ -800,8 +800,8 @@ static int ifx_spi_create_port(struct ifx_spi_device *ifx_dev)
tty_port_init(pport);
pport->ops = &ifx_tty_port_ops;
ifx_dev->minor = IFX_SPI_TTY_ID;
- ifx_dev->tty_dev = tty_register_device(tty_drv, ifx_dev->minor,
- &ifx_dev->spi_dev->dev);
+ ifx_dev->tty_dev = tty_port_register_device(pport, tty_drv,
+ ifx_dev->minor, &ifx_dev->spi_dev->dev);
if (IS_ERR(ifx_dev->tty_dev)) {
dev_dbg(&ifx_dev->spi_dev->dev,
"%s: registering tty device failed", __func__);
diff --git a/drivers/tty/serial/imx.c b/drivers/tty/serial/imx.c
index d5c689d6217..72ec56e6d42 100644
--- a/drivers/tty/serial/imx.c
+++ b/drivers/tty/serial/imx.c
@@ -206,7 +206,7 @@ struct imx_port {
unsigned short trcv_delay; /* transceiver delay */
struct clk *clk_ipg;
struct clk *clk_per;
- struct imx_uart_data *devdata;
+ const struct imx_uart_data *devdata;
};
struct imx_port_ucrs {
@@ -1505,18 +1505,21 @@ static int serial_imx_probe(struct platform_device *pdev)
pinctrl = devm_pinctrl_get_select_default(&pdev->dev);
if (IS_ERR(pinctrl)) {
ret = PTR_ERR(pinctrl);
+ dev_err(&pdev->dev, "failed to get default pinctrl: %d\n", ret);
goto unmap;
}
sport->clk_ipg = devm_clk_get(&pdev->dev, "ipg");
if (IS_ERR(sport->clk_ipg)) {
ret = PTR_ERR(sport->clk_ipg);
+ dev_err(&pdev->dev, "failed to get ipg clk: %d\n", ret);
goto unmap;
}
sport->clk_per = devm_clk_get(&pdev->dev, "per");
if (IS_ERR(sport->clk_per)) {
ret = PTR_ERR(sport->clk_per);
+ dev_err(&pdev->dev, "failed to get per clk: %d\n", ret);
goto unmap;
}
diff --git a/drivers/tty/serial/ioc3_serial.c b/drivers/tty/serial/ioc3_serial.c
index 758ff310f7f..5ac52898a0b 100644
--- a/drivers/tty/serial/ioc3_serial.c
+++ b/drivers/tty/serial/ioc3_serial.c
@@ -1120,13 +1120,14 @@ static inline int do_read(struct uart_port *the_port, char *buf, int len)
struct ioc3_port *port = get_ioc3_port(the_port);
struct ring *inring;
struct ring_entry *entry;
- struct port_hooks *hooks = port->ip_hooks;
+ struct port_hooks *hooks;
int byte_num;
char *sc;
int loop_counter;
BUG_ON(!(len >= 0));
BUG_ON(!port);
+ hooks = port->ip_hooks;
/* There is a nasty timing issue in the IOC3. When the rx_timer
* expires or the rx_high condition arises, we take an interrupt.
diff --git a/drivers/tty/serial/ioc4_serial.c b/drivers/tty/serial/ioc4_serial.c
index e16894fb2ca..3e7da10cebb 100644
--- a/drivers/tty/serial/ioc4_serial.c
+++ b/drivers/tty/serial/ioc4_serial.c
@@ -1803,7 +1803,7 @@ static inline int ic4_startup_local(struct uart_port *the_port)
ioc4_set_proto(port, the_port->mapbase);
/* set the speed of the serial port */
- ioc4_change_speed(the_port, state->port.tty->termios,
+ ioc4_change_speed(the_port, &state->port.tty->termios,
(struct ktermios *)0);
return 0;
@@ -2069,13 +2069,14 @@ static inline int do_read(struct uart_port *the_port, unsigned char *buf,
struct ioc4_port *port = get_ioc4_port(the_port, 0);
struct ring *inring;
struct ring_entry *entry;
- struct hooks *hooks = port->ip_hooks;
+ struct hooks *hooks;
int byte_num;
char *sc;
int loop_counter;
BUG_ON(!(len >= 0));
BUG_ON(!port);
+ hooks = port->ip_hooks;
/* There is a nasty timing issue in the IOC4. When the rx_timer
* expires or the rx_high condition arises, we take an interrupt.
diff --git a/drivers/tty/serial/jsm/jsm_tty.c b/drivers/tty/serial/jsm/jsm_tty.c
index 434bd881fca..71397961773 100644
--- a/drivers/tty/serial/jsm/jsm_tty.c
+++ b/drivers/tty/serial/jsm/jsm_tty.c
@@ -161,7 +161,7 @@ static void jsm_tty_send_xchar(struct uart_port *port, char ch)
struct ktermios *termios;
spin_lock_irqsave(&port->lock, lock_flags);
- termios = port->state->port.tty->termios;
+ termios = &port->state->port.tty->termios;
if (ch == termios->c_cc[VSTART])
channel->ch_bd->bd_ops->send_start_character(channel);
@@ -250,7 +250,7 @@ static int jsm_tty_open(struct uart_port *port)
channel->ch_cached_lsr = 0;
channel->ch_stops_sent = 0;
- termios = port->state->port.tty->termios;
+ termios = &port->state->port.tty->termios;
channel->ch_c_cflag = termios->c_cflag;
channel->ch_c_iflag = termios->c_iflag;
channel->ch_c_oflag = termios->c_oflag;
@@ -283,7 +283,7 @@ static void jsm_tty_close(struct uart_port *port)
jsm_printk(CLOSE, INFO, &channel->ch_bd->pci_dev, "start\n");
bd = channel->ch_bd;
- ts = port->state->port.tty->termios;
+ ts = &port->state->port.tty->termios;
channel->ch_flags &= ~(CH_STOPI);
@@ -567,7 +567,7 @@ void jsm_input(struct jsm_channel *ch)
*input data and return immediately.
*/
if (!tp ||
- !(tp->termios->c_cflag & CREAD) ) {
+ !(tp->termios.c_cflag & CREAD) ) {
jsm_printk(READ, INFO, &ch->ch_bd->pci_dev,
"input. dropping %d bytes on port %d...\n", data_len, ch->ch_portnum);
diff --git a/drivers/tty/serial/lpc32xx_hs.c b/drivers/tty/serial/lpc32xx_hs.c
new file mode 100644
index 00000000000..ba3af3bf6d4
--- /dev/null
+++ b/drivers/tty/serial/lpc32xx_hs.c
@@ -0,0 +1,823 @@
+/*
+ * High Speed Serial Ports on NXP LPC32xx SoC
+ *
+ * Authors: Kevin Wells <kevin.wells@nxp.com>
+ * Roland Stigge <stigge@antcom.de>
+ *
+ * Copyright (C) 2010 NXP Semiconductors
+ * Copyright (C) 2012 Roland Stigge
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/module.h>
+#include <linux/ioport.h>
+#include <linux/init.h>
+#include <linux/console.h>
+#include <linux/sysrq.h>
+#include <linux/tty.h>
+#include <linux/tty_flip.h>
+#include <linux/serial_core.h>
+#include <linux/serial.h>
+#include <linux/platform_device.h>
+#include <linux/delay.h>
+#include <linux/nmi.h>
+#include <linux/io.h>
+#include <linux/irq.h>
+#include <linux/gpio.h>
+#include <linux/of.h>
+#include <mach/platform.h>
+#include <mach/hardware.h>
+
+/*
+ * High Speed UART register offsets
+ */
+#define LPC32XX_HSUART_FIFO(x) ((x) + 0x00)
+#define LPC32XX_HSUART_LEVEL(x) ((x) + 0x04)
+#define LPC32XX_HSUART_IIR(x) ((x) + 0x08)
+#define LPC32XX_HSUART_CTRL(x) ((x) + 0x0C)
+#define LPC32XX_HSUART_RATE(x) ((x) + 0x10)
+
+#define LPC32XX_HSU_BREAK_DATA (1 << 10)
+#define LPC32XX_HSU_ERROR_DATA (1 << 9)
+#define LPC32XX_HSU_RX_EMPTY (1 << 8)
+
+#define LPC32XX_HSU_TX_LEV(n) (((n) >> 8) & 0xFF)
+#define LPC32XX_HSU_RX_LEV(n) ((n) & 0xFF)
+
+#define LPC32XX_HSU_TX_INT_SET (1 << 6)
+#define LPC32XX_HSU_RX_OE_INT (1 << 5)
+#define LPC32XX_HSU_BRK_INT (1 << 4)
+#define LPC32XX_HSU_FE_INT (1 << 3)
+#define LPC32XX_HSU_RX_TIMEOUT_INT (1 << 2)
+#define LPC32XX_HSU_RX_TRIG_INT (1 << 1)
+#define LPC32XX_HSU_TX_INT (1 << 0)
+
+#define LPC32XX_HSU_HRTS_INV (1 << 21)
+#define LPC32XX_HSU_HRTS_TRIG_8B (0x0 << 19)
+#define LPC32XX_HSU_HRTS_TRIG_16B (0x1 << 19)
+#define LPC32XX_HSU_HRTS_TRIG_32B (0x2 << 19)
+#define LPC32XX_HSU_HRTS_TRIG_48B (0x3 << 19)
+#define LPC32XX_HSU_HRTS_EN (1 << 18)
+#define LPC32XX_HSU_TMO_DISABLED (0x0 << 16)
+#define LPC32XX_HSU_TMO_INACT_4B (0x1 << 16)
+#define LPC32XX_HSU_TMO_INACT_8B (0x2 << 16)
+#define LPC32XX_HSU_TMO_INACT_16B (0x3 << 16)
+#define LPC32XX_HSU_HCTS_INV (1 << 15)
+#define LPC32XX_HSU_HCTS_EN (1 << 14)
+#define LPC32XX_HSU_OFFSET(n) ((n) << 9)
+#define LPC32XX_HSU_BREAK (1 << 8)
+#define LPC32XX_HSU_ERR_INT_EN (1 << 7)
+#define LPC32XX_HSU_RX_INT_EN (1 << 6)
+#define LPC32XX_HSU_TX_INT_EN (1 << 5)
+#define LPC32XX_HSU_RX_TL1B (0x0 << 2)
+#define LPC32XX_HSU_RX_TL4B (0x1 << 2)
+#define LPC32XX_HSU_RX_TL8B (0x2 << 2)
+#define LPC32XX_HSU_RX_TL16B (0x3 << 2)
+#define LPC32XX_HSU_RX_TL32B (0x4 << 2)
+#define LPC32XX_HSU_RX_TL48B (0x5 << 2)
+#define LPC32XX_HSU_TX_TLEMPTY (0x0 << 0)
+#define LPC32XX_HSU_TX_TL0B (0x0 << 0)
+#define LPC32XX_HSU_TX_TL4B (0x1 << 0)
+#define LPC32XX_HSU_TX_TL8B (0x2 << 0)
+#define LPC32XX_HSU_TX_TL16B (0x3 << 0)
+
+#define MODNAME "lpc32xx_hsuart"
+
+struct lpc32xx_hsuart_port {
+ struct uart_port port;
+};
+
+#define FIFO_READ_LIMIT 128
+#define MAX_PORTS 3
+#define LPC32XX_TTY_NAME "ttyTX"
+static struct lpc32xx_hsuart_port lpc32xx_hs_ports[MAX_PORTS];
+
+#ifdef CONFIG_SERIAL_HS_LPC32XX_CONSOLE
+static void wait_for_xmit_empty(struct uart_port *port)
+{
+ unsigned int timeout = 10000;
+
+ do {
+ if (LPC32XX_HSU_TX_LEV(readl(LPC32XX_HSUART_LEVEL(
+ port->membase))) == 0)
+ break;
+ if (--timeout == 0)
+ break;
+ udelay(1);
+ } while (1);
+}
+
+static void wait_for_xmit_ready(struct uart_port *port)
+{
+ unsigned int timeout = 10000;
+
+ while (1) {
+ if (LPC32XX_HSU_TX_LEV(readl(LPC32XX_HSUART_LEVEL(
+ port->membase))) < 32)
+ break;
+ if (--timeout == 0)
+ break;
+ udelay(1);
+ }
+}
+
+static void lpc32xx_hsuart_console_putchar(struct uart_port *port, int ch)
+{
+ wait_for_xmit_ready(port);
+ writel((u32)ch, LPC32XX_HSUART_FIFO(port->membase));
+}
+
+static void lpc32xx_hsuart_console_write(struct console *co, const char *s,
+ unsigned int count)
+{
+ struct lpc32xx_hsuart_port *up = &lpc32xx_hs_ports[co->index];
+ unsigned long flags;
+ int locked = 1;
+
+ touch_nmi_watchdog();
+ local_irq_save(flags);
+ if (up->port.sysrq)
+ locked = 0;
+ else if (oops_in_progress)
+ locked = spin_trylock(&up->port.lock);
+ else
+ spin_lock(&up->port.lock);
+
+ uart_console_write(&up->port, s, count, lpc32xx_hsuart_console_putchar);
+ wait_for_xmit_empty(&up->port);
+
+ if (locked)
+ spin_unlock(&up->port.lock);
+ local_irq_restore(flags);
+}
+
+static int __init lpc32xx_hsuart_console_setup(struct console *co,
+ char *options)
+{
+ struct uart_port *port;
+ int baud = 115200;
+ int bits = 8;
+ int parity = 'n';
+ int flow = 'n';
+
+ if (co->index >= MAX_PORTS)
+ co->index = 0;
+
+ port = &lpc32xx_hs_ports[co->index].port;
+ if (!port->membase)
+ return -ENODEV;
+
+ if (options)
+ uart_parse_options(options, &baud, &parity, &bits, &flow);
+
+ return uart_set_options(port, co, baud, parity, bits, flow);
+}
+
+static struct uart_driver lpc32xx_hsuart_reg;
+static struct console lpc32xx_hsuart_console = {
+ .name = LPC32XX_TTY_NAME,
+ .write = lpc32xx_hsuart_console_write,
+ .device = uart_console_device,
+ .setup = lpc32xx_hsuart_console_setup,
+ .flags = CON_PRINTBUFFER,
+ .index = -1,
+ .data = &lpc32xx_hsuart_reg,
+};
+
+static int __init lpc32xx_hsuart_console_init(void)
+{
+ register_console(&lpc32xx_hsuart_console);
+ return 0;
+}
+console_initcall(lpc32xx_hsuart_console_init);
+
+#define LPC32XX_HSUART_CONSOLE (&lpc32xx_hsuart_console)
+#else
+#define LPC32XX_HSUART_CONSOLE NULL
+#endif
+
+static struct uart_driver lpc32xx_hs_reg = {
+ .owner = THIS_MODULE,
+ .driver_name = MODNAME,
+ .dev_name = LPC32XX_TTY_NAME,
+ .nr = MAX_PORTS,
+ .cons = LPC32XX_HSUART_CONSOLE,
+};
+static int uarts_registered;
+
+static unsigned int __serial_get_clock_div(unsigned long uartclk,
+ unsigned long rate)
+{
+ u32 div, goodrate, hsu_rate, l_hsu_rate, comprate;
+ u32 rate_diff;
+
+ /* Find the closest divider to get the desired clock rate */
+ div = uartclk / rate;
+ goodrate = hsu_rate = (div / 14) - 1;
+ if (hsu_rate != 0)
+ hsu_rate--;
+
+ /* Tweak divider */
+ l_hsu_rate = hsu_rate + 3;
+ rate_diff = 0xFFFFFFFF;
+
+ while (hsu_rate < l_hsu_rate) {
+ comprate = uartclk / ((hsu_rate + 1) * 14);
+ if (abs(comprate - rate) < rate_diff) {
+ goodrate = hsu_rate;
+ rate_diff = abs(comprate - rate);
+ }
+
+ hsu_rate++;
+ }
+ if (hsu_rate > 0xFF)
+ hsu_rate = 0xFF;
+
+ return goodrate;
+}
+
+static void __serial_uart_flush(struct uart_port *port)
+{
+ u32 tmp;
+ int cnt = 0;
+
+ while ((readl(LPC32XX_HSUART_LEVEL(port->membase)) > 0) &&
+ (cnt++ < FIFO_READ_LIMIT))
+ tmp = readl(LPC32XX_HSUART_FIFO(port->membase));
+}
+
+static void __serial_lpc32xx_rx(struct uart_port *port)
+{
+ unsigned int tmp, flag;
+ struct tty_struct *tty = tty_port_tty_get(&port->state->port);
+
+ if (!tty) {
+ /* Discard data: no tty available */
+ while (!(readl(LPC32XX_HSUART_FIFO(port->membase)) &
+ LPC32XX_HSU_RX_EMPTY))
+ ;
+
+ return;
+ }
+
+ /* Read data from FIFO and push into terminal */
+ tmp = readl(LPC32XX_HSUART_FIFO(port->membase));
+ while (!(tmp & LPC32XX_HSU_RX_EMPTY)) {
+ flag = TTY_NORMAL;
+ port->icount.rx++;
+
+ if (tmp & LPC32XX_HSU_ERROR_DATA) {
+ /* Framing error */
+ writel(LPC32XX_HSU_FE_INT,
+ LPC32XX_HSUART_IIR(port->membase));
+ port->icount.frame++;
+ flag = TTY_FRAME;
+ tty_insert_flip_char(tty, 0, TTY_FRAME);
+ }
+
+ tty_insert_flip_char(tty, (tmp & 0xFF), flag);
+
+ tmp = readl(LPC32XX_HSUART_FIFO(port->membase));
+ }
+ tty_flip_buffer_push(tty);
+ tty_kref_put(tty);
+}
+
+static void __serial_lpc32xx_tx(struct uart_port *port)
+{
+ struct circ_buf *xmit = &port->state->xmit;
+ unsigned int tmp;
+
+ if (port->x_char) {
+ writel((u32)port->x_char, LPC32XX_HSUART_FIFO(port->membase));
+ port->icount.tx++;
+ port->x_char = 0;
+ return;
+ }
+
+ if (uart_circ_empty(xmit) || uart_tx_stopped(port))
+ goto exit_tx;
+
+ /* Transfer data */
+ while (LPC32XX_HSU_TX_LEV(readl(
+ LPC32XX_HSUART_LEVEL(port->membase))) < 64) {
+ writel((u32) xmit->buf[xmit->tail],
+ LPC32XX_HSUART_FIFO(port->membase));
+ xmit->tail = (xmit->tail + 1) & (UART_XMIT_SIZE - 1);
+ port->icount.tx++;
+ if (uart_circ_empty(xmit))
+ break;
+ }
+
+ if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS)
+ uart_write_wakeup(port);
+
+exit_tx:
+ if (uart_circ_empty(xmit)) {
+ tmp = readl(LPC32XX_HSUART_CTRL(port->membase));
+ tmp &= ~LPC32XX_HSU_TX_INT_EN;
+ writel(tmp, LPC32XX_HSUART_CTRL(port->membase));
+ }
+}
+
+static irqreturn_t serial_lpc32xx_interrupt(int irq, void *dev_id)
+{
+ struct uart_port *port = dev_id;
+ struct tty_struct *tty = tty_port_tty_get(&port->state->port);
+ u32 status;
+
+ spin_lock(&port->lock);
+
+ /* Read UART status and clear latched interrupts */
+ status = readl(LPC32XX_HSUART_IIR(port->membase));
+
+ if (status & LPC32XX_HSU_BRK_INT) {
+ /* Break received */
+ writel(LPC32XX_HSU_BRK_INT, LPC32XX_HSUART_IIR(port->membase));
+ port->icount.brk++;
+ uart_handle_break(port);
+ }
+
+ /* Framing error */
+ if (status & LPC32XX_HSU_FE_INT)
+ writel(LPC32XX_HSU_FE_INT, LPC32XX_HSUART_IIR(port->membase));
+
+ if (status & LPC32XX_HSU_RX_OE_INT) {
+ /* Receive FIFO overrun */
+ writel(LPC32XX_HSU_RX_OE_INT,
+ LPC32XX_HSUART_IIR(port->membase));
+ port->icount.overrun++;
+ if (tty) {
+ tty_insert_flip_char(tty, 0, TTY_OVERRUN);
+ tty_schedule_flip(tty);
+ }
+ }
+
+ /* Data received? */
+ if (status & (LPC32XX_HSU_RX_TIMEOUT_INT | LPC32XX_HSU_RX_TRIG_INT)) {
+ __serial_lpc32xx_rx(port);
+ if (tty)
+ tty_flip_buffer_push(tty);
+ }
+
+ /* Transmit data request? */
+ if ((status & LPC32XX_HSU_TX_INT) && (!uart_tx_stopped(port))) {
+ writel(LPC32XX_HSU_TX_INT, LPC32XX_HSUART_IIR(port->membase));
+ __serial_lpc32xx_tx(port);
+ }
+
+ spin_unlock(&port->lock);
+ tty_kref_put(tty);
+
+ return IRQ_HANDLED;
+}
+
+/* port->lock is not held. */
+static unsigned int serial_lpc32xx_tx_empty(struct uart_port *port)
+{
+ unsigned int ret = 0;
+
+ if (LPC32XX_HSU_TX_LEV(readl(LPC32XX_HSUART_LEVEL(port->membase))) == 0)
+ ret = TIOCSER_TEMT;
+
+ return ret;
+}
+
+/* port->lock held by caller. */
+static void serial_lpc32xx_set_mctrl(struct uart_port *port,
+ unsigned int mctrl)
+{
+ /* No signals are supported on HS UARTs */
+}
+
+/* port->lock is held by caller and interrupts are disabled. */
+static unsigned int serial_lpc32xx_get_mctrl(struct uart_port *port)
+{
+ /* No signals are supported on HS UARTs */
+ return TIOCM_CAR | TIOCM_DSR | TIOCM_CTS;
+}
+
+/* port->lock held by caller. */
+static void serial_lpc32xx_stop_tx(struct uart_port *port)
+{
+ u32 tmp;
+
+ tmp = readl(LPC32XX_HSUART_CTRL(port->membase));
+ tmp &= ~LPC32XX_HSU_TX_INT_EN;
+ writel(tmp, LPC32XX_HSUART_CTRL(port->membase));
+}
+
+/* port->lock held by caller. */
+static void serial_lpc32xx_start_tx(struct uart_port *port)
+{
+ u32 tmp;
+
+ __serial_lpc32xx_tx(port);
+ tmp = readl(LPC32XX_HSUART_CTRL(port->membase));
+ tmp |= LPC32XX_HSU_TX_INT_EN;
+ writel(tmp, LPC32XX_HSUART_CTRL(port->membase));
+}
+
+/* port->lock held by caller. */
+static void serial_lpc32xx_stop_rx(struct uart_port *port)
+{
+ u32 tmp;
+
+ tmp = readl(LPC32XX_HSUART_CTRL(port->membase));
+ tmp &= ~(LPC32XX_HSU_RX_INT_EN | LPC32XX_HSU_ERR_INT_EN);
+ writel(tmp, LPC32XX_HSUART_CTRL(port->membase));
+
+ writel((LPC32XX_HSU_BRK_INT | LPC32XX_HSU_RX_OE_INT |
+ LPC32XX_HSU_FE_INT), LPC32XX_HSUART_IIR(port->membase));
+}
+
+/* port->lock held by caller. */
+static void serial_lpc32xx_enable_ms(struct uart_port *port)
+{
+ /* Modem status is not supported */
+}
+
+/* port->lock is not held. */
+static void serial_lpc32xx_break_ctl(struct uart_port *port,
+ int break_state)
+{
+ unsigned long flags;
+ u32 tmp;
+
+ spin_lock_irqsave(&port->lock, flags);
+ tmp = readl(LPC32XX_HSUART_CTRL(port->membase));
+ if (break_state != 0)
+ tmp |= LPC32XX_HSU_BREAK;
+ else
+ tmp &= ~LPC32XX_HSU_BREAK;
+ writel(tmp, LPC32XX_HSUART_CTRL(port->membase));
+ spin_unlock_irqrestore(&port->lock, flags);
+}
+
+/* LPC3250 Errata HSUART.1: Hang workaround via loopback mode on inactivity */
+static void lpc32xx_loopback_set(resource_size_t mapbase, int state)
+{
+ int bit;
+ u32 tmp;
+
+ switch (mapbase) {
+ case LPC32XX_HS_UART1_BASE:
+ bit = 0;
+ break;
+ case LPC32XX_HS_UART2_BASE:
+ bit = 1;
+ break;
+ case LPC32XX_HS_UART7_BASE:
+ bit = 6;
+ break;
+ default:
+ WARN(1, "lpc32xx_hs: Warning: Unknown port at %08x\n", mapbase);
+ return;
+ }
+
+ tmp = readl(LPC32XX_UARTCTL_CLOOP);
+ if (state)
+ tmp |= (1 << bit);
+ else
+ tmp &= ~(1 << bit);
+ writel(tmp, LPC32XX_UARTCTL_CLOOP);
+}
+
+/* port->lock is not held. */
+static int serial_lpc32xx_startup(struct uart_port *port)
+{
+ int retval;
+ unsigned long flags;
+ u32 tmp;
+
+ spin_lock_irqsave(&port->lock, flags);
+
+ __serial_uart_flush(port);
+
+ writel((LPC32XX_HSU_TX_INT | LPC32XX_HSU_FE_INT |
+ LPC32XX_HSU_BRK_INT | LPC32XX_HSU_RX_OE_INT),
+ LPC32XX_HSUART_IIR(port->membase));
+
+ writel(0xFF, LPC32XX_HSUART_RATE(port->membase));
+
+ /*
+ * Set receiver timeout, HSU offset of 20, no break, no interrupts,
+ * and default FIFO trigger levels
+ */
+ tmp = LPC32XX_HSU_TX_TL8B | LPC32XX_HSU_RX_TL32B |
+ LPC32XX_HSU_OFFSET(20) | LPC32XX_HSU_TMO_INACT_4B;
+ writel(tmp, LPC32XX_HSUART_CTRL(port->membase));
+
+ lpc32xx_loopback_set(port->mapbase, 0); /* get out of loopback mode */
+
+ spin_unlock_irqrestore(&port->lock, flags);
+
+ retval = request_irq(port->irq, serial_lpc32xx_interrupt,
+ 0, MODNAME, port);
+ if (!retval)
+ writel((tmp | LPC32XX_HSU_RX_INT_EN | LPC32XX_HSU_ERR_INT_EN),
+ LPC32XX_HSUART_CTRL(port->membase));
+
+ return retval;
+}
+
+/* port->lock is not held. */
+static void serial_lpc32xx_shutdown(struct uart_port *port)
+{
+ u32 tmp;
+ unsigned long flags;
+
+ spin_lock_irqsave(&port->lock, flags);
+
+ tmp = LPC32XX_HSU_TX_TL8B | LPC32XX_HSU_RX_TL32B |
+ LPC32XX_HSU_OFFSET(20) | LPC32XX_HSU_TMO_INACT_4B;
+ writel(tmp, LPC32XX_HSUART_CTRL(port->membase));
+
+ lpc32xx_loopback_set(port->mapbase, 1); /* go to loopback mode */
+
+ spin_unlock_irqrestore(&port->lock, flags);
+
+ free_irq(port->irq, port);
+}
+
+/* port->lock is not held. */
+static void serial_lpc32xx_set_termios(struct uart_port *port,
+ struct ktermios *termios,
+ struct ktermios *old)
+{
+ unsigned long flags;
+ unsigned int baud, quot;
+ u32 tmp;
+
+ /* Always 8-bit, no parity, 1 stop bit */
+ termios->c_cflag &= ~(CSIZE | CSTOPB | PARENB | PARODD);
+ termios->c_cflag |= CS8;
+
+ termios->c_cflag &= ~(HUPCL | CMSPAR | CLOCAL | CRTSCTS);
+
+ baud = uart_get_baud_rate(port, termios, old, 0,
+ port->uartclk / 14);
+
+ quot = __serial_get_clock_div(port->uartclk, baud);
+
+ spin_lock_irqsave(&port->lock, flags);
+
+ /* Ignore characters? */
+ tmp = readl(LPC32XX_HSUART_CTRL(port->membase));
+ if ((termios->c_cflag & CREAD) == 0)
+ tmp &= ~(LPC32XX_HSU_RX_INT_EN | LPC32XX_HSU_ERR_INT_EN);
+ else
+ tmp |= LPC32XX_HSU_RX_INT_EN | LPC32XX_HSU_ERR_INT_EN;
+ writel(tmp, LPC32XX_HSUART_CTRL(port->membase));
+
+ writel(quot, LPC32XX_HSUART_RATE(port->membase));
+
+ uart_update_timeout(port, termios->c_cflag, baud);
+
+ spin_unlock_irqrestore(&port->lock, flags);
+
+ /* Don't rewrite B0 */
+ if (tty_termios_baud_rate(termios))
+ tty_termios_encode_baud_rate(termios, baud, baud);
+}
+
+static const char *serial_lpc32xx_type(struct uart_port *port)
+{
+ return MODNAME;
+}
+
+static void serial_lpc32xx_release_port(struct uart_port *port)
+{
+ if ((port->iotype == UPIO_MEM32) && (port->mapbase)) {
+ if (port->flags & UPF_IOREMAP) {
+ iounmap(port->membase);
+ port->membase = NULL;
+ }
+
+ release_mem_region(port->mapbase, SZ_4K);
+ }
+}
+
+static int serial_lpc32xx_request_port(struct uart_port *port)
+{
+ int ret = -ENODEV;
+
+ if ((port->iotype == UPIO_MEM32) && (port->mapbase)) {
+ ret = 0;
+
+ if (!request_mem_region(port->mapbase, SZ_4K, MODNAME))
+ ret = -EBUSY;
+ else if (port->flags & UPF_IOREMAP) {
+ port->membase = ioremap(port->mapbase, SZ_4K);
+ if (!port->membase) {
+ release_mem_region(port->mapbase, SZ_4K);
+ ret = -ENOMEM;
+ }
+ }
+ }
+
+ return ret;
+}
+
+static void serial_lpc32xx_config_port(struct uart_port *port, int uflags)
+{
+ int ret;
+
+ ret = serial_lpc32xx_request_port(port);
+ if (ret < 0)
+ return;
+ port->type = PORT_UART00;
+ port->fifosize = 64;
+
+ __serial_uart_flush(port);
+
+ writel((LPC32XX_HSU_TX_INT | LPC32XX_HSU_FE_INT |
+ LPC32XX_HSU_BRK_INT | LPC32XX_HSU_RX_OE_INT),
+ LPC32XX_HSUART_IIR(port->membase));
+
+ writel(0xFF, LPC32XX_HSUART_RATE(port->membase));
+
+ /* Set receiver timeout, HSU offset of 20, no break, no interrupts,
+ and default FIFO trigger levels */
+ writel(LPC32XX_HSU_TX_TL8B | LPC32XX_HSU_RX_TL32B |
+ LPC32XX_HSU_OFFSET(20) | LPC32XX_HSU_TMO_INACT_4B,
+ LPC32XX_HSUART_CTRL(port->membase));
+}
+
+static int serial_lpc32xx_verify_port(struct uart_port *port,
+ struct serial_struct *ser)
+{
+ int ret = 0;
+
+ if (ser->type != PORT_UART00)
+ ret = -EINVAL;
+
+ return ret;
+}
+
+static struct uart_ops serial_lpc32xx_pops = {
+ .tx_empty = serial_lpc32xx_tx_empty,
+ .set_mctrl = serial_lpc32xx_set_mctrl,
+ .get_mctrl = serial_lpc32xx_get_mctrl,
+ .stop_tx = serial_lpc32xx_stop_tx,
+ .start_tx = serial_lpc32xx_start_tx,
+ .stop_rx = serial_lpc32xx_stop_rx,
+ .enable_ms = serial_lpc32xx_enable_ms,
+ .break_ctl = serial_lpc32xx_break_ctl,
+ .startup = serial_lpc32xx_startup,
+ .shutdown = serial_lpc32xx_shutdown,
+ .set_termios = serial_lpc32xx_set_termios,
+ .type = serial_lpc32xx_type,
+ .release_port = serial_lpc32xx_release_port,
+ .request_port = serial_lpc32xx_request_port,
+ .config_port = serial_lpc32xx_config_port,
+ .verify_port = serial_lpc32xx_verify_port,
+};
+
+/*
+ * Register a set of serial devices attached to a platform device
+ */
+static int __devinit serial_hs_lpc32xx_probe(struct platform_device *pdev)
+{
+ struct lpc32xx_hsuart_port *p = &lpc32xx_hs_ports[uarts_registered];
+ int ret = 0;
+ struct resource *res;
+
+ if (uarts_registered >= MAX_PORTS) {
+ dev_err(&pdev->dev,
+ "Error: Number of possible ports exceeded (%d)!\n",
+ uarts_registered + 1);
+ return -ENXIO;
+ }
+
+ memset(p, 0, sizeof(*p));
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (!res) {
+ dev_err(&pdev->dev,
+ "Error getting mem resource for HS UART port %d\n",
+ uarts_registered);
+ return -ENXIO;
+ }
+ p->port.mapbase = res->start;
+ p->port.membase = NULL;
+
+ p->port.irq = platform_get_irq(pdev, 0);
+ if (p->port.irq < 0) {
+ dev_err(&pdev->dev, "Error getting irq for HS UART port %d\n",
+ uarts_registered);
+ return p->port.irq;
+ }
+
+ p->port.iotype = UPIO_MEM32;
+ p->port.uartclk = LPC32XX_MAIN_OSC_FREQ;
+ p->port.regshift = 2;
+ p->port.flags = UPF_BOOT_AUTOCONF | UPF_FIXED_PORT | UPF_IOREMAP;
+ p->port.dev = &pdev->dev;
+ p->port.ops = &serial_lpc32xx_pops;
+ p->port.line = uarts_registered++;
+ spin_lock_init(&p->port.lock);
+
+ /* send port to loopback mode by default */
+ lpc32xx_loopback_set(p->port.mapbase, 1);
+
+ ret = uart_add_one_port(&lpc32xx_hs_reg, &p->port);
+
+ platform_set_drvdata(pdev, p);
+
+ return ret;
+}
+
+/*
+ * Remove serial ports registered against a platform device.
+ */
+static int __devexit serial_hs_lpc32xx_remove(struct platform_device *pdev)
+{
+ struct lpc32xx_hsuart_port *p = platform_get_drvdata(pdev);
+
+ uart_remove_one_port(&lpc32xx_hs_reg, &p->port);
+
+ return 0;
+}
+
+
+#ifdef CONFIG_PM
+static int serial_hs_lpc32xx_suspend(struct platform_device *pdev,
+ pm_message_t state)
+{
+ struct lpc32xx_hsuart_port *p = platform_get_drvdata(pdev);
+
+ uart_suspend_port(&lpc32xx_hs_reg, &p->port);
+
+ return 0;
+}
+
+static int serial_hs_lpc32xx_resume(struct platform_device *pdev)
+{
+ struct lpc32xx_hsuart_port *p = platform_get_drvdata(pdev);
+
+ uart_resume_port(&lpc32xx_hs_reg, &p->port);
+
+ return 0;
+}
+#else
+#define serial_hs_lpc32xx_suspend NULL
+#define serial_hs_lpc32xx_resume NULL
+#endif
+
+static const struct of_device_id serial_hs_lpc32xx_dt_ids[] = {
+ { .compatible = "nxp,lpc3220-hsuart" },
+ { /* sentinel */ }
+};
+
+MODULE_DEVICE_TABLE(of, serial_hs_lpc32xx_dt_ids);
+
+static struct platform_driver serial_hs_lpc32xx_driver = {
+ .probe = serial_hs_lpc32xx_probe,
+ .remove = __devexit_p(serial_hs_lpc32xx_remove),
+ .suspend = serial_hs_lpc32xx_suspend,
+ .resume = serial_hs_lpc32xx_resume,
+ .driver = {
+ .name = MODNAME,
+ .owner = THIS_MODULE,
+ .of_match_table = serial_hs_lpc32xx_dt_ids,
+ },
+};
+
+static int __init lpc32xx_hsuart_init(void)
+{
+ int ret;
+
+ ret = uart_register_driver(&lpc32xx_hs_reg);
+ if (ret)
+ return ret;
+
+ ret = platform_driver_register(&serial_hs_lpc32xx_driver);
+ if (ret)
+ uart_unregister_driver(&lpc32xx_hs_reg);
+
+ return ret;
+}
+
+static void __exit lpc32xx_hsuart_exit(void)
+{
+ platform_driver_unregister(&serial_hs_lpc32xx_driver);
+ uart_unregister_driver(&lpc32xx_hs_reg);
+}
+
+module_init(lpc32xx_hsuart_init);
+module_exit(lpc32xx_hsuart_exit);
+
+MODULE_AUTHOR("Kevin Wells <kevin.wells@nxp.com>");
+MODULE_AUTHOR("Roland Stigge <stigge@antcom.de>");
+MODULE_DESCRIPTION("NXP LPC32XX High Speed UART driver");
+MODULE_LICENSE("GPL");
diff --git a/drivers/tty/serial/m32r_sio.c b/drivers/tty/serial/m32r_sio.c
index a0703624d5e..b13949ad340 100644
--- a/drivers/tty/serial/m32r_sio.c
+++ b/drivers/tty/serial/m32r_sio.c
@@ -44,8 +44,6 @@
#include <asm/io.h>
#include <asm/irq.h>
-#define PORT_M32R_BASE PORT_M32R_SIO
-#define PORT_INDEX(x) (x - PORT_M32R_BASE + 1)
#define BAUD_RATE 115200
#include <linux/serial_core.h>
@@ -132,22 +130,6 @@ struct irq_info {
static struct irq_info irq_lists[NR_IRQS];
-/*
- * Here we define the default xmit fifo size used for each type of UART.
- */
-static const struct serial_uart_config uart_config[] = {
- [PORT_UNKNOWN] = {
- .name = "unknown",
- .dfl_xmit_fifo_size = 1,
- .flags = 0,
- },
- [PORT_INDEX(PORT_M32R_SIO)] = {
- .name = "M32RSIO",
- .dfl_xmit_fifo_size = 1,
- .flags = 0,
- },
-};
-
#ifdef CONFIG_SERIAL_M32R_PLDSIO
#define __sio_in(x) inw((unsigned long)(x))
@@ -907,8 +889,7 @@ static void m32r_sio_config_port(struct uart_port *port, int unused)
spin_lock_irqsave(&up->port.lock, flags);
- up->port.type = (PORT_M32R_SIO - PORT_M32R_BASE + 1);
- up->port.fifosize = uart_config[up->port.type].dfl_xmit_fifo_size;
+ up->port.fifosize = 1;
spin_unlock_irqrestore(&up->port.lock, flags);
}
@@ -916,23 +897,11 @@ static void m32r_sio_config_port(struct uart_port *port, int unused)
static int
m32r_sio_verify_port(struct uart_port *port, struct serial_struct *ser)
{
- if (ser->irq >= nr_irqs || ser->irq < 0 ||
- ser->baud_base < 9600 || ser->type < PORT_UNKNOWN ||
- ser->type >= ARRAY_SIZE(uart_config))
+ if (ser->irq >= nr_irqs || ser->irq < 0 || ser->baud_base < 9600)
return -EINVAL;
return 0;
}
-static const char *
-m32r_sio_type(struct uart_port *port)
-{
- int type = port->type;
-
- if (type >= ARRAY_SIZE(uart_config))
- type = 0;
- return uart_config[type].name;
-}
-
static struct uart_ops m32r_sio_pops = {
.tx_empty = m32r_sio_tx_empty,
.set_mctrl = m32r_sio_set_mctrl,
@@ -946,7 +915,6 @@ static struct uart_ops m32r_sio_pops = {
.shutdown = m32r_sio_shutdown,
.set_termios = m32r_sio_set_termios,
.pm = m32r_sio_pm,
- .type = m32r_sio_type,
.release_port = m32r_sio_release_port,
.request_port = m32r_sio_request_port,
.config_port = m32r_sio_config_port,
diff --git a/drivers/tty/serial/max3100.c b/drivers/tty/serial/max3100.c
index b4902b99cfd..46043c2521c 100644
--- a/drivers/tty/serial/max3100.c
+++ b/drivers/tty/serial/max3100.c
@@ -910,17 +910,7 @@ static struct spi_driver max3100_driver = {
.resume = max3100_resume,
};
-static int __init max3100_init(void)
-{
- return spi_register_driver(&max3100_driver);
-}
-module_init(max3100_init);
-
-static void __exit max3100_exit(void)
-{
- spi_unregister_driver(&max3100_driver);
-}
-module_exit(max3100_exit);
+module_spi_driver(max3100_driver);
MODULE_DESCRIPTION("MAX3100 driver");
MODULE_AUTHOR("Christian Pellegrin <chripell@evolware.org>");
diff --git a/drivers/tty/serial/max3107.c b/drivers/tty/serial/max3107.c
deleted file mode 100644
index 17c7ba805d9..00000000000
--- a/drivers/tty/serial/max3107.c
+++ /dev/null
@@ -1,1215 +0,0 @@
-/*
- * max3107.c - spi uart protocol driver for Maxim 3107
- * Based on max3100.c
- * by Christian Pellegrin <chripell@evolware.org>
- * and max3110.c
- * by Feng Tang <feng.tang@intel.com>
- *
- * Copyright (C) Aavamobile 2009
- *
- * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- *
- * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
- *
- */
-
-#include <linux/delay.h>
-#include <linux/device.h>
-#include <linux/serial_core.h>
-#include <linux/serial.h>
-#include <linux/tty.h>
-#include <linux/tty_flip.h>
-#include <linux/gpio.h>
-#include <linux/spi/spi.h>
-#include <linux/freezer.h>
-#include <linux/module.h>
-#include "max3107.h"
-
-static const struct baud_table brg26_ext[] = {
- { 300, MAX3107_BRG26_B300 },
- { 600, MAX3107_BRG26_B600 },
- { 1200, MAX3107_BRG26_B1200 },
- { 2400, MAX3107_BRG26_B2400 },
- { 4800, MAX3107_BRG26_B4800 },
- { 9600, MAX3107_BRG26_B9600 },
- { 19200, MAX3107_BRG26_B19200 },
- { 57600, MAX3107_BRG26_B57600 },
- { 115200, MAX3107_BRG26_B115200 },
- { 230400, MAX3107_BRG26_B230400 },
- { 460800, MAX3107_BRG26_B460800 },
- { 921600, MAX3107_BRG26_B921600 },
- { 0, 0 }
-};
-
-static const struct baud_table brg13_int[] = {
- { 300, MAX3107_BRG13_IB300 },
- { 600, MAX3107_BRG13_IB600 },
- { 1200, MAX3107_BRG13_IB1200 },
- { 2400, MAX3107_BRG13_IB2400 },
- { 4800, MAX3107_BRG13_IB4800 },
- { 9600, MAX3107_BRG13_IB9600 },
- { 19200, MAX3107_BRG13_IB19200 },
- { 57600, MAX3107_BRG13_IB57600 },
- { 115200, MAX3107_BRG13_IB115200 },
- { 230400, MAX3107_BRG13_IB230400 },
- { 460800, MAX3107_BRG13_IB460800 },
- { 921600, MAX3107_BRG13_IB921600 },
- { 0, 0 }
-};
-
-static u32 get_new_brg(int baud, struct max3107_port *s)
-{
- int i;
- const struct baud_table *baud_tbl = s->baud_tbl;
-
- for (i = 0; i < 13; i++) {
- if (baud == baud_tbl[i].baud)
- return baud_tbl[i].new_brg;
- }
-
- return 0;
-}
-
-/* Perform SPI transfer for write/read of device register(s) */
-int max3107_rw(struct max3107_port *s, u8 *tx, u8 *rx, int len)
-{
- struct spi_message spi_msg;
- struct spi_transfer spi_xfer;
-
- /* Initialize SPI ,message */
- spi_message_init(&spi_msg);
-
- /* Initialize SPI transfer */
- memset(&spi_xfer, 0, sizeof spi_xfer);
- spi_xfer.len = len;
- spi_xfer.tx_buf = tx;
- spi_xfer.rx_buf = rx;
- spi_xfer.speed_hz = MAX3107_SPI_SPEED;
-
- /* Add SPI transfer to SPI message */
- spi_message_add_tail(&spi_xfer, &spi_msg);
-
-#ifdef DBG_TRACE_SPI_DATA
- {
- int i;
- pr_info("tx len %d:\n", spi_xfer.len);
- for (i = 0 ; i < spi_xfer.len && i < 32 ; i++)
- pr_info(" %x", ((u8 *)spi_xfer.tx_buf)[i]);
- pr_info("\n");
- }
-#endif
-
- /* Perform synchronous SPI transfer */
- if (spi_sync(s->spi, &spi_msg)) {
- dev_err(&s->spi->dev, "spi_sync failure\n");
- return -EIO;
- }
-
-#ifdef DBG_TRACE_SPI_DATA
- if (spi_xfer.rx_buf) {
- int i;
- pr_info("rx len %d:\n", spi_xfer.len);
- for (i = 0 ; i < spi_xfer.len && i < 32 ; i++)
- pr_info(" %x", ((u8 *)spi_xfer.rx_buf)[i]);
- pr_info("\n");
- }
-#endif
- return 0;
-}
-EXPORT_SYMBOL_GPL(max3107_rw);
-
-/* Puts received data to circular buffer */
-static void put_data_to_circ_buf(struct max3107_port *s, unsigned char *data,
- int len)
-{
- struct uart_port *port = &s->port;
- struct tty_struct *tty;
-
- if (!port->state)
- return;
-
- tty = port->state->port.tty;
- if (!tty)
- return;
-
- /* Insert received data */
- tty_insert_flip_string(tty, data, len);
- /* Update RX counter */
- port->icount.rx += len;
-}
-
-/* Handle data receiving */
-static void max3107_handlerx(struct max3107_port *s, u16 rxlvl)
-{
- int i;
- int j;
- int len; /* SPI transfer buffer length */
- u16 *buf;
- u8 *valid_str;
-
- if (!s->rx_enabled)
- /* RX is disabled */
- return;
-
- if (rxlvl == 0) {
- /* RX fifo is empty */
- return;
- } else if (rxlvl >= MAX3107_RX_FIFO_SIZE) {
- dev_warn(&s->spi->dev, "Possible RX FIFO overrun %d\n", rxlvl);
- /* Ensure sanity of RX level */
- rxlvl = MAX3107_RX_FIFO_SIZE;
- }
- if ((s->rxbuf == 0) || (s->rxstr == 0)) {
- dev_warn(&s->spi->dev, "Rx buffer/str isn't ready\n");
- return;
- }
- buf = s->rxbuf;
- valid_str = s->rxstr;
- while (rxlvl) {
- pr_debug("rxlvl %d\n", rxlvl);
- /* Clear buffer */
- memset(buf, 0, sizeof(u16) * (MAX3107_RX_FIFO_SIZE + 2));
- len = 0;
- if (s->irqen_reg & MAX3107_IRQ_RXFIFO_BIT) {
- /* First disable RX FIFO interrupt */
- pr_debug("Disabling RX INT\n");
- buf[0] = (MAX3107_WRITE_BIT | MAX3107_IRQEN_REG);
- s->irqen_reg &= ~MAX3107_IRQ_RXFIFO_BIT;
- buf[0] |= s->irqen_reg;
- len++;
- }
- /* Just increase the length by amount of words in FIFO since
- * buffer was zeroed and SPI transfer of 0x0000 means reading
- * from RX FIFO
- */
- len += rxlvl;
- /* Append RX level query */
- buf[len] = MAX3107_RXFIFOLVL_REG;
- len++;
-
- /* Perform the SPI transfer */
- if (max3107_rw(s, (u8 *)buf, (u8 *)buf, len * 2)) {
- dev_err(&s->spi->dev, "SPI transfer for RX h failed\n");
- return;
- }
-
- /* Skip RX FIFO interrupt disabling word if it was added */
- j = ((len - 1) - rxlvl);
- /* Read received words */
- for (i = 0; i < rxlvl; i++, j++)
- valid_str[i] = (u8)buf[j];
- put_data_to_circ_buf(s, valid_str, rxlvl);
- /* Get new RX level */
- rxlvl = (buf[len - 1] & MAX3107_SPI_RX_DATA_MASK);
- }
-
- if (s->rx_enabled) {
- /* RX still enabled, re-enable RX FIFO interrupt */
- pr_debug("Enabling RX INT\n");
- buf[0] = (MAX3107_WRITE_BIT | MAX3107_IRQEN_REG);
- s->irqen_reg |= MAX3107_IRQ_RXFIFO_BIT;
- buf[0] |= s->irqen_reg;
- if (max3107_rw(s, (u8 *)buf, NULL, 2))
- dev_err(&s->spi->dev, "RX FIFO INT enabling failed\n");
- }
-
- /* Push the received data to receivers */
- if (s->port.state->port.tty)
- tty_flip_buffer_push(s->port.state->port.tty);
-}
-
-
-/* Handle data sending */
-static void max3107_handletx(struct max3107_port *s)
-{
- struct circ_buf *xmit = &s->port.state->xmit;
- int i;
- unsigned long flags;
- int len; /* SPI transfer buffer length */
- u16 *buf;
-
- if (!s->tx_fifo_empty)
- /* Don't send more data before previous data is sent */
- return;
-
- if (uart_circ_empty(xmit) || uart_tx_stopped(&s->port))
- /* No data to send or TX is stopped */
- return;
-
- if (!s->txbuf) {
- dev_warn(&s->spi->dev, "Txbuf isn't ready\n");
- return;
- }
- buf = s->txbuf;
- /* Get length of data pending in circular buffer */
- len = uart_circ_chars_pending(xmit);
- if (len) {
- /* Limit to size of TX FIFO */
- if (len > MAX3107_TX_FIFO_SIZE)
- len = MAX3107_TX_FIFO_SIZE;
-
- pr_debug("txlen %d\n", len);
-
- /* Update TX counter */
- s->port.icount.tx += len;
-
- /* TX FIFO will no longer be empty */
- s->tx_fifo_empty = 0;
-
- i = 0;
- if (s->irqen_reg & MAX3107_IRQ_TXEMPTY_BIT) {
- /* First disable TX empty interrupt */
- pr_debug("Disabling TE INT\n");
- buf[i] = (MAX3107_WRITE_BIT | MAX3107_IRQEN_REG);
- s->irqen_reg &= ~MAX3107_IRQ_TXEMPTY_BIT;
- buf[i] |= s->irqen_reg;
- i++;
- len++;
- }
- /* Add data to send */
- spin_lock_irqsave(&s->port.lock, flags);
- for ( ; i < len ; i++) {
- buf[i] = (MAX3107_WRITE_BIT | MAX3107_THR_REG);
- buf[i] |= ((u16)xmit->buf[xmit->tail] &
- MAX3107_SPI_TX_DATA_MASK);
- xmit->tail = (xmit->tail + 1) & (UART_XMIT_SIZE - 1);
- }
- spin_unlock_irqrestore(&s->port.lock, flags);
- if (!(s->irqen_reg & MAX3107_IRQ_TXEMPTY_BIT)) {
- /* Enable TX empty interrupt */
- pr_debug("Enabling TE INT\n");
- buf[i] = (MAX3107_WRITE_BIT | MAX3107_IRQEN_REG);
- s->irqen_reg |= MAX3107_IRQ_TXEMPTY_BIT;
- buf[i] |= s->irqen_reg;
- i++;
- len++;
- }
- if (!s->tx_enabled) {
- /* Enable TX */
- pr_debug("Enable TX\n");
- buf[i] = (MAX3107_WRITE_BIT | MAX3107_MODE1_REG);
- spin_lock_irqsave(&s->data_lock, flags);
- s->mode1_reg &= ~MAX3107_MODE1_TXDIS_BIT;
- buf[i] |= s->mode1_reg;
- spin_unlock_irqrestore(&s->data_lock, flags);
- s->tx_enabled = 1;
- i++;
- len++;
- }
-
- /* Perform the SPI transfer */
- if (max3107_rw(s, (u8 *)buf, NULL, len*2)) {
- dev_err(&s->spi->dev,
- "SPI transfer TX handling failed\n");
- return;
- }
- }
-
- /* Indicate wake up if circular buffer is getting low on data */
- if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS)
- uart_write_wakeup(&s->port);
-
-}
-
-/* Handle interrupts
- * Also reads and returns current RX FIFO level
- */
-static u16 handle_interrupt(struct max3107_port *s)
-{
- u16 buf[4]; /* Buffer for SPI transfers */
- u8 irq_status;
- u16 rx_level;
- unsigned long flags;
-
- /* Read IRQ status register */
- buf[0] = MAX3107_IRQSTS_REG;
- /* Read status IRQ status register */
- buf[1] = MAX3107_STS_IRQSTS_REG;
- /* Read LSR IRQ status register */
- buf[2] = MAX3107_LSR_IRQSTS_REG;
- /* Query RX level */
- buf[3] = MAX3107_RXFIFOLVL_REG;
-
- if (max3107_rw(s, (u8 *)buf, (u8 *)buf, 8)) {
- dev_err(&s->spi->dev,
- "SPI transfer for INTR handling failed\n");
- return 0;
- }
-
- irq_status = (u8)buf[0];
- pr_debug("IRQSTS %x\n", irq_status);
- rx_level = (buf[3] & MAX3107_SPI_RX_DATA_MASK);
-
- if (irq_status & MAX3107_IRQ_LSR_BIT) {
- /* LSR interrupt */
- if (buf[2] & MAX3107_LSR_RXTO_BIT)
- /* RX timeout interrupt,
- * handled by normal RX handling
- */
- pr_debug("RX TO INT\n");
- }
-
- if (irq_status & MAX3107_IRQ_TXEMPTY_BIT) {
- /* Tx empty interrupt,
- * disable TX and set tx_fifo_empty flag
- */
- pr_debug("TE INT, disabling TX\n");
- buf[0] = (MAX3107_WRITE_BIT | MAX3107_MODE1_REG);
- spin_lock_irqsave(&s->data_lock, flags);
- s->mode1_reg |= MAX3107_MODE1_TXDIS_BIT;
- buf[0] |= s->mode1_reg;
- spin_unlock_irqrestore(&s->data_lock, flags);
- if (max3107_rw(s, (u8 *)buf, NULL, 2))
- dev_err(&s->spi->dev, "SPI transfer TX dis failed\n");
- s->tx_enabled = 0;
- s->tx_fifo_empty = 1;
- }
-
- if (irq_status & MAX3107_IRQ_RXFIFO_BIT)
- /* RX FIFO interrupt,
- * handled by normal RX handling
- */
- pr_debug("RFIFO INT\n");
-
- /* Return RX level */
- return rx_level;
-}
-
-/* Trigger work thread*/
-static void max3107_dowork(struct max3107_port *s)
-{
- if (!work_pending(&s->work) && !freezing(current) && !s->suspended)
- queue_work(s->workqueue, &s->work);
- else
- dev_warn(&s->spi->dev, "interrup isn't serviced normally!\n");
-}
-
-/* Work thread */
-static void max3107_work(struct work_struct *w)
-{
- struct max3107_port *s = container_of(w, struct max3107_port, work);
- u16 rxlvl = 0;
- int len; /* SPI transfer buffer length */
- u16 buf[5]; /* Buffer for SPI transfers */
- unsigned long flags;
-
- /* Start by reading current RX FIFO level */
- buf[0] = MAX3107_RXFIFOLVL_REG;
- if (max3107_rw(s, (u8 *)buf, (u8 *)buf, 2)) {
- dev_err(&s->spi->dev, "SPI transfer RX lev failed\n");
- rxlvl = 0;
- } else {
- rxlvl = (buf[0] & MAX3107_SPI_RX_DATA_MASK);
- }
-
- do {
- pr_debug("rxlvl %d\n", rxlvl);
-
- /* Handle RX */
- max3107_handlerx(s, rxlvl);
- rxlvl = 0;
-
- if (s->handle_irq) {
- /* Handle pending interrupts
- * We also get new RX FIFO level since new data may
- * have been received while pushing received data to
- * receivers
- */
- s->handle_irq = 0;
- rxlvl = handle_interrupt(s);
- }
-
- /* Handle TX */
- max3107_handletx(s);
-
- /* Handle configuration changes */
- len = 0;
- spin_lock_irqsave(&s->data_lock, flags);
- if (s->mode1_commit) {
- pr_debug("mode1_commit\n");
- buf[len] = (MAX3107_WRITE_BIT | MAX3107_MODE1_REG);
- buf[len++] |= s->mode1_reg;
- s->mode1_commit = 0;
- }
- if (s->lcr_commit) {
- pr_debug("lcr_commit\n");
- buf[len] = (MAX3107_WRITE_BIT | MAX3107_LCR_REG);
- buf[len++] |= s->lcr_reg;
- s->lcr_commit = 0;
- }
- if (s->brg_commit) {
- pr_debug("brg_commit\n");
- buf[len] = (MAX3107_WRITE_BIT | MAX3107_BRGDIVMSB_REG);
- buf[len++] |= ((s->brg_cfg >> 16) &
- MAX3107_SPI_TX_DATA_MASK);
- buf[len] = (MAX3107_WRITE_BIT | MAX3107_BRGDIVLSB_REG);
- buf[len++] |= ((s->brg_cfg >> 8) &
- MAX3107_SPI_TX_DATA_MASK);
- buf[len] = (MAX3107_WRITE_BIT | MAX3107_BRGCFG_REG);
- buf[len++] |= ((s->brg_cfg) & 0xff);
- s->brg_commit = 0;
- }
- spin_unlock_irqrestore(&s->data_lock, flags);
-
- if (len > 0) {
- if (max3107_rw(s, (u8 *)buf, NULL, len * 2))
- dev_err(&s->spi->dev,
- "SPI transfer config failed\n");
- }
-
- /* Reloop if interrupt handling indicated data in RX FIFO */
- } while (rxlvl);
-
-}
-
-/* Set sleep mode */
-static void max3107_set_sleep(struct max3107_port *s, int mode)
-{
- u16 buf[1]; /* Buffer for SPI transfer */
- unsigned long flags;
- pr_debug("enter, mode %d\n", mode);
-
- buf[0] = (MAX3107_WRITE_BIT | MAX3107_MODE1_REG);
- spin_lock_irqsave(&s->data_lock, flags);
- switch (mode) {
- case MAX3107_DISABLE_FORCED_SLEEP:
- s->mode1_reg &= ~MAX3107_MODE1_FORCESLEEP_BIT;
- break;
- case MAX3107_ENABLE_FORCED_SLEEP:
- s->mode1_reg |= MAX3107_MODE1_FORCESLEEP_BIT;
- break;
- case MAX3107_DISABLE_AUTOSLEEP:
- s->mode1_reg &= ~MAX3107_MODE1_AUTOSLEEP_BIT;
- break;
- case MAX3107_ENABLE_AUTOSLEEP:
- s->mode1_reg |= MAX3107_MODE1_AUTOSLEEP_BIT;
- break;
- default:
- spin_unlock_irqrestore(&s->data_lock, flags);
- dev_warn(&s->spi->dev, "invalid sleep mode\n");
- return;
- }
- buf[0] |= s->mode1_reg;
- spin_unlock_irqrestore(&s->data_lock, flags);
-
- if (max3107_rw(s, (u8 *)buf, NULL, 2))
- dev_err(&s->spi->dev, "SPI transfer sleep mode failed\n");
-
- if (mode == MAX3107_DISABLE_AUTOSLEEP ||
- mode == MAX3107_DISABLE_FORCED_SLEEP)
- msleep(MAX3107_WAKEUP_DELAY);
-}
-
-/* Perform full register initialization */
-static void max3107_register_init(struct max3107_port *s)
-{
- u16 buf[11]; /* Buffer for SPI transfers */
-
- /* 1. Configure baud rate, 9600 as default */
- s->baud = 9600;
- /* the below is default*/
- if (s->ext_clk) {
- s->brg_cfg = MAX3107_BRG26_B9600;
- s->baud_tbl = (struct baud_table *)brg26_ext;
- } else {
- s->brg_cfg = MAX3107_BRG13_IB9600;
- s->baud_tbl = (struct baud_table *)brg13_int;
- }
-
- if (s->pdata->init)
- s->pdata->init(s);
-
- buf[0] = (MAX3107_WRITE_BIT | MAX3107_BRGDIVMSB_REG)
- | ((s->brg_cfg >> 16) & MAX3107_SPI_TX_DATA_MASK);
- buf[1] = (MAX3107_WRITE_BIT | MAX3107_BRGDIVLSB_REG)
- | ((s->brg_cfg >> 8) & MAX3107_SPI_TX_DATA_MASK);
- buf[2] = (MAX3107_WRITE_BIT | MAX3107_BRGCFG_REG)
- | ((s->brg_cfg) & 0xff);
-
- /* 2. Configure LCR register, 8N1 mode by default */
- s->lcr_reg = MAX3107_LCR_WORD_LEN_8;
- buf[3] = (MAX3107_WRITE_BIT | MAX3107_LCR_REG)
- | s->lcr_reg;
-
- /* 3. Configure MODE 1 register */
- s->mode1_reg = 0;
- /* Enable IRQ pin */
- s->mode1_reg |= MAX3107_MODE1_IRQSEL_BIT;
- /* Disable TX */
- s->mode1_reg |= MAX3107_MODE1_TXDIS_BIT;
- s->tx_enabled = 0;
- /* RX is enabled */
- s->rx_enabled = 1;
- buf[4] = (MAX3107_WRITE_BIT | MAX3107_MODE1_REG)
- | s->mode1_reg;
-
- /* 4. Configure MODE 2 register */
- buf[5] = (MAX3107_WRITE_BIT | MAX3107_MODE2_REG);
- if (s->loopback) {
- /* Enable loopback */
- buf[5] |= MAX3107_MODE2_LOOPBACK_BIT;
- }
- /* Reset FIFOs */
- buf[5] |= MAX3107_MODE2_FIFORST_BIT;
- s->tx_fifo_empty = 1;
-
- /* 5. Configure FIFO trigger level register */
- buf[6] = (MAX3107_WRITE_BIT | MAX3107_FIFOTRIGLVL_REG);
- /* RX FIFO trigger for 16 words, TX FIFO trigger not used */
- buf[6] |= (MAX3107_FIFOTRIGLVL_RX(16) | MAX3107_FIFOTRIGLVL_TX(0));
-
- /* 6. Configure flow control levels */
- buf[7] = (MAX3107_WRITE_BIT | MAX3107_FLOWLVL_REG);
- /* Flow control halt level 96, resume level 48 */
- buf[7] |= (MAX3107_FLOWLVL_RES(48) | MAX3107_FLOWLVL_HALT(96));
-
- /* 7. Configure flow control */
- buf[8] = (MAX3107_WRITE_BIT | MAX3107_FLOWCTRL_REG);
- /* Enable auto CTS and auto RTS flow control */
- buf[8] |= (MAX3107_FLOWCTRL_AUTOCTS_BIT | MAX3107_FLOWCTRL_AUTORTS_BIT);
-
- /* 8. Configure RX timeout register */
- buf[9] = (MAX3107_WRITE_BIT | MAX3107_RXTO_REG);
- /* Timeout after 48 character intervals */
- buf[9] |= 0x0030;
-
- /* 9. Configure LSR interrupt enable register */
- buf[10] = (MAX3107_WRITE_BIT | MAX3107_LSR_IRQEN_REG);
- /* Enable RX timeout interrupt */
- buf[10] |= MAX3107_LSR_RXTO_BIT;
-
- /* Perform SPI transfer */
- if (max3107_rw(s, (u8 *)buf, NULL, 22))
- dev_err(&s->spi->dev, "SPI transfer for init failed\n");
-
- /* 10. Clear IRQ status register by reading it */
- buf[0] = MAX3107_IRQSTS_REG;
-
- /* 11. Configure interrupt enable register */
- /* Enable LSR interrupt */
- s->irqen_reg = MAX3107_IRQ_LSR_BIT;
- /* Enable RX FIFO interrupt */
- s->irqen_reg |= MAX3107_IRQ_RXFIFO_BIT;
- buf[1] = (MAX3107_WRITE_BIT | MAX3107_IRQEN_REG)
- | s->irqen_reg;
-
- /* 12. Clear FIFO reset that was set in step 6 */
- buf[2] = (MAX3107_WRITE_BIT | MAX3107_MODE2_REG);
- if (s->loopback) {
- /* Keep loopback enabled */
- buf[2] |= MAX3107_MODE2_LOOPBACK_BIT;
- }
-
- /* Perform SPI transfer */
- if (max3107_rw(s, (u8 *)buf, (u8 *)buf, 6))
- dev_err(&s->spi->dev, "SPI transfer for init failed\n");
-
-}
-
-/* IRQ handler */
-static irqreturn_t max3107_irq(int irqno, void *dev_id)
-{
- struct max3107_port *s = dev_id;
-
- if (irqno != s->spi->irq) {
- /* Unexpected IRQ */
- return IRQ_NONE;
- }
-
- /* Indicate irq */
- s->handle_irq = 1;
-
- /* Trigger work thread */
- max3107_dowork(s);
-
- return IRQ_HANDLED;
-}
-
-/* HW suspension function
- *
- * Currently autosleep is used to decrease current consumption, alternative
- * approach would be to set the chip to reset mode if UART is not being
- * used but that would mess the GPIOs
- *
- */
-void max3107_hw_susp(struct max3107_port *s, int suspend)
-{
- pr_debug("enter, suspend %d\n", suspend);
-
- if (suspend) {
- /* Suspend requested,
- * enable autosleep to decrease current consumption
- */
- s->suspended = 1;
- max3107_set_sleep(s, MAX3107_ENABLE_AUTOSLEEP);
- } else {
- /* Resume requested,
- * disable autosleep
- */
- s->suspended = 0;
- max3107_set_sleep(s, MAX3107_DISABLE_AUTOSLEEP);
- }
-}
-EXPORT_SYMBOL_GPL(max3107_hw_susp);
-
-/* Modem status IRQ enabling */
-static void max3107_enable_ms(struct uart_port *port)
-{
- /* Modem status not supported */
-}
-
-/* Data send function */
-static void max3107_start_tx(struct uart_port *port)
-{
- struct max3107_port *s = container_of(port, struct max3107_port, port);
-
- /* Trigger work thread for sending data */
- max3107_dowork(s);
-}
-
-/* Function for checking that there is no pending transfers */
-static unsigned int max3107_tx_empty(struct uart_port *port)
-{
- struct max3107_port *s = container_of(port, struct max3107_port, port);
-
- pr_debug("returning %d\n",
- (s->tx_fifo_empty && uart_circ_empty(&s->port.state->xmit)));
- return s->tx_fifo_empty && uart_circ_empty(&s->port.state->xmit);
-}
-
-/* Function for stopping RX */
-static void max3107_stop_rx(struct uart_port *port)
-{
- struct max3107_port *s = container_of(port, struct max3107_port, port);
- unsigned long flags;
-
- /* Set RX disabled in MODE 1 register */
- spin_lock_irqsave(&s->data_lock, flags);
- s->mode1_reg |= MAX3107_MODE1_RXDIS_BIT;
- s->mode1_commit = 1;
- spin_unlock_irqrestore(&s->data_lock, flags);
- /* Set RX disabled */
- s->rx_enabled = 0;
- /* Trigger work thread for doing the actual configuration change */
- max3107_dowork(s);
-}
-
-/* Function for returning control pin states */
-static unsigned int max3107_get_mctrl(struct uart_port *port)
-{
- /* DCD and DSR are not wired and CTS/RTS is handled automatically
- * so just indicate DSR and CAR asserted
- */
- return TIOCM_DSR | TIOCM_CAR;
-}
-
-/* Function for setting control pin states */
-static void max3107_set_mctrl(struct uart_port *port, unsigned int mctrl)
-{
- /* DCD and DSR are not wired and CTS/RTS is hadnled automatically
- * so do nothing
- */
-}
-
-/* Function for configuring UART parameters */
-static void max3107_set_termios(struct uart_port *port,
- struct ktermios *termios,
- struct ktermios *old)
-{
- struct max3107_port *s = container_of(port, struct max3107_port, port);
- struct tty_struct *tty;
- int baud;
- u16 new_lcr = 0;
- u32 new_brg = 0;
- unsigned long flags;
-
- if (!port->state)
- return;
-
- tty = port->state->port.tty;
- if (!tty)
- return;
-
- /* Get new LCR register values */
- /* Word size */
- if ((termios->c_cflag & CSIZE) == CS7)
- new_lcr |= MAX3107_LCR_WORD_LEN_7;
- else
- new_lcr |= MAX3107_LCR_WORD_LEN_8;
-
- /* Parity */
- if (termios->c_cflag & PARENB) {
- new_lcr |= MAX3107_LCR_PARITY_BIT;
- if (!(termios->c_cflag & PARODD))
- new_lcr |= MAX3107_LCR_EVENPARITY_BIT;
- }
-
- /* Stop bits */
- if (termios->c_cflag & CSTOPB) {
- /* 2 stop bits */
- new_lcr |= MAX3107_LCR_STOPLEN_BIT;
- }
-
- /* Mask termios capabilities we don't support */
- termios->c_cflag &= ~CMSPAR;
-
- /* Set status ignore mask */
- s->port.ignore_status_mask = 0;
- if (termios->c_iflag & IGNPAR)
- s->port.ignore_status_mask |= MAX3107_ALL_ERRORS;
-
- /* Set low latency to immediately handle pushed data */
- s->port.state->port.tty->low_latency = 1;
-
- /* Get new baud rate generator configuration */
- baud = tty_get_baud_rate(tty);
-
- spin_lock_irqsave(&s->data_lock, flags);
- new_brg = get_new_brg(baud, s);
- /* if can't find the corrent config, use previous */
- if (!new_brg) {
- baud = s->baud;
- new_brg = s->brg_cfg;
- }
- spin_unlock_irqrestore(&s->data_lock, flags);
- tty_termios_encode_baud_rate(termios, baud, baud);
- s->baud = baud;
-
- /* Update timeout according to new baud rate */
- uart_update_timeout(port, termios->c_cflag, baud);
-
- spin_lock_irqsave(&s->data_lock, flags);
- if (s->lcr_reg != new_lcr) {
- s->lcr_reg = new_lcr;
- s->lcr_commit = 1;
- }
- if (s->brg_cfg != new_brg) {
- s->brg_cfg = new_brg;
- s->brg_commit = 1;
- }
- spin_unlock_irqrestore(&s->data_lock, flags);
-
- /* Trigger work thread for doing the actual configuration change */
- max3107_dowork(s);
-}
-
-/* Port shutdown function */
-static void max3107_shutdown(struct uart_port *port)
-{
- struct max3107_port *s = container_of(port, struct max3107_port, port);
-
- if (s->suspended && s->pdata->hw_suspend)
- s->pdata->hw_suspend(s, 0);
-
- /* Free the interrupt */
- free_irq(s->spi->irq, s);
-
- if (s->workqueue) {
- /* Flush and destroy work queue */
- flush_workqueue(s->workqueue);
- destroy_workqueue(s->workqueue);
- s->workqueue = NULL;
- }
-
- /* Suspend HW */
- if (s->pdata->hw_suspend)
- s->pdata->hw_suspend(s, 1);
-}
-
-/* Port startup function */
-static int max3107_startup(struct uart_port *port)
-{
- struct max3107_port *s = container_of(port, struct max3107_port, port);
-
- /* Initialize work queue */
- s->workqueue = create_freezable_workqueue("max3107");
- if (!s->workqueue) {
- dev_err(&s->spi->dev, "Workqueue creation failed\n");
- return -EBUSY;
- }
- INIT_WORK(&s->work, max3107_work);
-
- /* Setup IRQ */
- if (request_irq(s->spi->irq, max3107_irq, IRQF_TRIGGER_FALLING,
- "max3107", s)) {
- dev_err(&s->spi->dev, "IRQ reguest failed\n");
- destroy_workqueue(s->workqueue);
- s->workqueue = NULL;
- return -EBUSY;
- }
-
- /* Resume HW */
- if (s->pdata->hw_suspend)
- s->pdata->hw_suspend(s, 0);
-
- /* Init registers */
- max3107_register_init(s);
-
- return 0;
-}
-
-/* Port type function */
-static const char *max3107_type(struct uart_port *port)
-{
- struct max3107_port *s = container_of(port, struct max3107_port, port);
- return s->spi->modalias;
-}
-
-/* Port release function */
-static void max3107_release_port(struct uart_port *port)
-{
- /* Do nothing */
-}
-
-/* Port request function */
-static int max3107_request_port(struct uart_port *port)
-{
- /* Do nothing */
- return 0;
-}
-
-/* Port config function */
-static void max3107_config_port(struct uart_port *port, int flags)
-{
- struct max3107_port *s = container_of(port, struct max3107_port, port);
- s->port.type = PORT_MAX3107;
-}
-
-/* Port verify function */
-static int max3107_verify_port(struct uart_port *port,
- struct serial_struct *ser)
-{
- if (ser->type == PORT_UNKNOWN || ser->type == PORT_MAX3107)
- return 0;
-
- return -EINVAL;
-}
-
-/* Port stop TX function */
-static void max3107_stop_tx(struct uart_port *port)
-{
- /* Do nothing */
-}
-
-/* Port break control function */
-static void max3107_break_ctl(struct uart_port *port, int break_state)
-{
- /* We don't support break control, do nothing */
-}
-
-
-/* Port functions */
-static struct uart_ops max3107_ops = {
- .tx_empty = max3107_tx_empty,
- .set_mctrl = max3107_set_mctrl,
- .get_mctrl = max3107_get_mctrl,
- .stop_tx = max3107_stop_tx,
- .start_tx = max3107_start_tx,
- .stop_rx = max3107_stop_rx,
- .enable_ms = max3107_enable_ms,
- .break_ctl = max3107_break_ctl,
- .startup = max3107_startup,
- .shutdown = max3107_shutdown,
- .set_termios = max3107_set_termios,
- .type = max3107_type,
- .release_port = max3107_release_port,
- .request_port = max3107_request_port,
- .config_port = max3107_config_port,
- .verify_port = max3107_verify_port,
-};
-
-/* UART driver data */
-static struct uart_driver max3107_uart_driver = {
- .owner = THIS_MODULE,
- .driver_name = "ttyMAX",
- .dev_name = "ttyMAX",
- .nr = 1,
-};
-
-static int driver_registered = 0;
-
-
-
-/* 'Generic' platform data */
-static struct max3107_plat generic_plat_data = {
- .loopback = 0,
- .ext_clk = 1,
- .hw_suspend = max3107_hw_susp,
- .polled_mode = 0,
- .poll_time = 0,
-};
-
-
-/*******************************************************************/
-
-/**
- * max3107_probe - SPI bus probe entry point
- * @spi: the spi device
- *
- * SPI wants us to probe this device and if appropriate claim it.
- * Perform any platform specific requirements and then initialise
- * the device.
- */
-
-int max3107_probe(struct spi_device *spi, struct max3107_plat *pdata)
-{
- struct max3107_port *s;
- u16 buf[2]; /* Buffer for SPI transfers */
- int retval;
-
- pr_info("enter max3107 probe\n");
-
- /* Allocate port structure */
- s = kzalloc(sizeof(*s), GFP_KERNEL);
- if (!s) {
- pr_err("Allocating port structure failed\n");
- return -ENOMEM;
- }
-
- s->pdata = pdata;
-
- /* SPI Rx buffer
- * +2 for RX FIFO interrupt
- * disabling and RX level query
- */
- s->rxbuf = kzalloc(sizeof(u16) * (MAX3107_RX_FIFO_SIZE+2), GFP_KERNEL);
- if (!s->rxbuf) {
- pr_err("Allocating RX buffer failed\n");
- retval = -ENOMEM;
- goto err_free4;
- }
- s->rxstr = kzalloc(sizeof(u8) * MAX3107_RX_FIFO_SIZE, GFP_KERNEL);
- if (!s->rxstr) {
- pr_err("Allocating RX buffer failed\n");
- retval = -ENOMEM;
- goto err_free3;
- }
- /* SPI Tx buffer
- * SPI transfer buffer
- * +3 for TX FIFO empty
- * interrupt disabling and
- * enabling and TX enabling
- */
- s->txbuf = kzalloc(sizeof(u16) * MAX3107_TX_FIFO_SIZE + 3, GFP_KERNEL);
- if (!s->txbuf) {
- pr_err("Allocating TX buffer failed\n");
- retval = -ENOMEM;
- goto err_free2;
- }
- /* Initialize shared data lock */
- spin_lock_init(&s->data_lock);
-
- /* SPI intializations */
- dev_set_drvdata(&spi->dev, s);
- spi->mode = SPI_MODE_0;
- spi->dev.platform_data = pdata;
- spi->bits_per_word = 16;
- s->ext_clk = pdata->ext_clk;
- s->loopback = pdata->loopback;
- spi_setup(spi);
- s->spi = spi;
-
- /* Check REV ID to ensure we are talking to what we expect */
- buf[0] = MAX3107_REVID_REG;
- if (max3107_rw(s, (u8 *)buf, (u8 *)buf, 2)) {
- dev_err(&s->spi->dev, "SPI transfer for REVID read failed\n");
- retval = -EIO;
- goto err_free1;
- }
- if ((buf[0] & MAX3107_SPI_RX_DATA_MASK) != MAX3107_REVID1 &&
- (buf[0] & MAX3107_SPI_RX_DATA_MASK) != MAX3107_REVID2) {
- dev_err(&s->spi->dev, "REVID %x does not match\n",
- (buf[0] & MAX3107_SPI_RX_DATA_MASK));
- retval = -ENODEV;
- goto err_free1;
- }
-
- /* Disable all interrupts */
- buf[0] = (MAX3107_WRITE_BIT | MAX3107_IRQEN_REG | 0x0000);
- buf[0] |= 0x0000;
-
- /* Configure clock source */
- buf[1] = (MAX3107_WRITE_BIT | MAX3107_CLKSRC_REG);
- if (s->ext_clk) {
- /* External clock */
- buf[1] |= MAX3107_CLKSRC_EXTCLK_BIT;
- }
-
- /* PLL bypass ON */
- buf[1] |= MAX3107_CLKSRC_PLLBYP_BIT;
-
- /* Perform SPI transfer */
- if (max3107_rw(s, (u8 *)buf, NULL, 4)) {
- dev_err(&s->spi->dev, "SPI transfer for init failed\n");
- retval = -EIO;
- goto err_free1;
- }
-
- /* Register UART driver */
- if (!driver_registered) {
- retval = uart_register_driver(&max3107_uart_driver);
- if (retval) {
- dev_err(&s->spi->dev, "Registering UART driver failed\n");
- goto err_free1;
- }
- driver_registered = 1;
- }
-
- /* Initialize UART port data */
- s->port.fifosize = 128;
- s->port.ops = &max3107_ops;
- s->port.line = 0;
- s->port.dev = &spi->dev;
- s->port.uartclk = 9600;
- s->port.flags = UPF_SKIP_TEST | UPF_BOOT_AUTOCONF;
- s->port.irq = s->spi->irq;
- s->port.type = PORT_MAX3107;
-
- /* Add UART port */
- retval = uart_add_one_port(&max3107_uart_driver, &s->port);
- if (retval < 0) {
- dev_err(&s->spi->dev, "Adding UART port failed\n");
- goto err_free1;
- }
-
- if (pdata->configure) {
- retval = pdata->configure(s);
- if (retval < 0)
- goto err_free1;
- }
-
- /* Go to suspend mode */
- if (pdata->hw_suspend)
- pdata->hw_suspend(s, 1);
-
- return 0;
-
-err_free1:
- kfree(s->txbuf);
-err_free2:
- kfree(s->rxstr);
-err_free3:
- kfree(s->rxbuf);
-err_free4:
- kfree(s);
- return retval;
-}
-EXPORT_SYMBOL_GPL(max3107_probe);
-
-/* Driver remove function */
-int max3107_remove(struct spi_device *spi)
-{
- struct max3107_port *s = dev_get_drvdata(&spi->dev);
-
- pr_info("enter max3107 remove\n");
-
- /* Remove port */
- if (uart_remove_one_port(&max3107_uart_driver, &s->port))
- dev_warn(&s->spi->dev, "Removing UART port failed\n");
-
-
- /* Free TxRx buffer */
- kfree(s->rxbuf);
- kfree(s->rxstr);
- kfree(s->txbuf);
-
- /* Free port structure */
- kfree(s);
-
- return 0;
-}
-EXPORT_SYMBOL_GPL(max3107_remove);
-
-/* Driver suspend function */
-int max3107_suspend(struct spi_device *spi, pm_message_t state)
-{
-#ifdef CONFIG_PM
- struct max3107_port *s = dev_get_drvdata(&spi->dev);
-
- pr_debug("enter suspend\n");
-
- /* Suspend UART port */
- uart_suspend_port(&max3107_uart_driver, &s->port);
-
- /* Go to suspend mode */
- if (s->pdata->hw_suspend)
- s->pdata->hw_suspend(s, 1);
-#endif /* CONFIG_PM */
- return 0;
-}
-EXPORT_SYMBOL_GPL(max3107_suspend);
-
-/* Driver resume function */
-int max3107_resume(struct spi_device *spi)
-{
-#ifdef CONFIG_PM
- struct max3107_port *s = dev_get_drvdata(&spi->dev);
-
- pr_debug("enter resume\n");
-
- /* Resume from suspend */
- if (s->pdata->hw_suspend)
- s->pdata->hw_suspend(s, 0);
-
- /* Resume UART port */
- uart_resume_port(&max3107_uart_driver, &s->port);
-#endif /* CONFIG_PM */
- return 0;
-}
-EXPORT_SYMBOL_GPL(max3107_resume);
-
-static int max3107_probe_generic(struct spi_device *spi)
-{
- return max3107_probe(spi, &generic_plat_data);
-}
-
-/* Spi driver data */
-static struct spi_driver max3107_driver = {
- .driver = {
- .name = "max3107",
- .owner = THIS_MODULE,
- },
- .probe = max3107_probe_generic,
- .remove = __devexit_p(max3107_remove),
- .suspend = max3107_suspend,
- .resume = max3107_resume,
-};
-
-/* Driver init function */
-static int __init max3107_init(void)
-{
- pr_info("enter max3107 init\n");
- return spi_register_driver(&max3107_driver);
-}
-
-/* Driver exit function */
-static void __exit max3107_exit(void)
-{
- pr_info("enter max3107 exit\n");
- /* Unregister UART driver */
- if (driver_registered)
- uart_unregister_driver(&max3107_uart_driver);
- spi_unregister_driver(&max3107_driver);
-}
-
-module_init(max3107_init);
-module_exit(max3107_exit);
-
-MODULE_DESCRIPTION("MAX3107 driver");
-MODULE_AUTHOR("Aavamobile");
-MODULE_ALIAS("spi:max3107");
-MODULE_LICENSE("GPL v2");
diff --git a/drivers/tty/serial/max3107.h b/drivers/tty/serial/max3107.h
deleted file mode 100644
index 8415fc723b9..00000000000
--- a/drivers/tty/serial/max3107.h
+++ /dev/null
@@ -1,441 +0,0 @@
-/*
- * max3107.h - spi uart protocol driver header for Maxim 3107
- *
- * Copyright (C) Aavamobile 2009
- * Based on serial_max3100.h by Christian Pellegrin
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- */
-
-#ifndef _MAX3107_H
-#define _MAX3107_H
-
-/* Serial error status definitions */
-#define MAX3107_PARITY_ERROR 1
-#define MAX3107_FRAME_ERROR 2
-#define MAX3107_OVERRUN_ERROR 4
-#define MAX3107_ALL_ERRORS (MAX3107_PARITY_ERROR | \
- MAX3107_FRAME_ERROR | \
- MAX3107_OVERRUN_ERROR)
-
-/* GPIO definitions */
-#define MAX3107_GPIO_BASE 88
-#define MAX3107_GPIO_COUNT 4
-
-
-/* GPIO connected to chip's reset pin */
-#define MAX3107_RESET_GPIO 87
-
-
-/* Chip reset delay */
-#define MAX3107_RESET_DELAY 10
-
-/* Chip wakeup delay */
-#define MAX3107_WAKEUP_DELAY 50
-
-
-/* Sleep mode definitions */
-#define MAX3107_DISABLE_FORCED_SLEEP 0
-#define MAX3107_ENABLE_FORCED_SLEEP 1
-#define MAX3107_DISABLE_AUTOSLEEP 2
-#define MAX3107_ENABLE_AUTOSLEEP 3
-
-
-/* Definitions for register access with SPI transfers
- *
- * SPI transfer format:
- *
- * Master to slave bits xzzzzzzzyyyyyyyy
- * Slave to master bits aaaaaaaabbbbbbbb
- *
- * where:
- * x = 0 for reads, 1 for writes
- * z = register address
- * y = new register value if write, 0 if read
- * a = unspecified
- * b = register value if read, unspecified if write
- */
-
-/* SPI speed */
-#define MAX3107_SPI_SPEED (3125000 * 2)
-
-/* Write bit */
-#define MAX3107_WRITE_BIT (1 << 15)
-
-/* SPI TX data mask */
-#define MAX3107_SPI_RX_DATA_MASK (0x00ff)
-
-/* SPI RX data mask */
-#define MAX3107_SPI_TX_DATA_MASK (0x00ff)
-
-/* Register access masks */
-#define MAX3107_RHR_REG (0x0000) /* RX FIFO */
-#define MAX3107_THR_REG (0x0000) /* TX FIFO */
-#define MAX3107_IRQEN_REG (0x0100) /* IRQ enable */
-#define MAX3107_IRQSTS_REG (0x0200) /* IRQ status */
-#define MAX3107_LSR_IRQEN_REG (0x0300) /* LSR IRQ enable */
-#define MAX3107_LSR_IRQSTS_REG (0x0400) /* LSR IRQ status */
-#define MAX3107_SPCHR_IRQEN_REG (0x0500) /* Special char IRQ enable */
-#define MAX3107_SPCHR_IRQSTS_REG (0x0600) /* Special char IRQ status */
-#define MAX3107_STS_IRQEN_REG (0x0700) /* Status IRQ enable */
-#define MAX3107_STS_IRQSTS_REG (0x0800) /* Status IRQ status */
-#define MAX3107_MODE1_REG (0x0900) /* MODE1 */
-#define MAX3107_MODE2_REG (0x0a00) /* MODE2 */
-#define MAX3107_LCR_REG (0x0b00) /* LCR */
-#define MAX3107_RXTO_REG (0x0c00) /* RX timeout */
-#define MAX3107_HDPIXDELAY_REG (0x0d00) /* Auto transceiver delays */
-#define MAX3107_IRDA_REG (0x0e00) /* IRDA settings */
-#define MAX3107_FLOWLVL_REG (0x0f00) /* Flow control levels */
-#define MAX3107_FIFOTRIGLVL_REG (0x1000) /* FIFO IRQ trigger levels */
-#define MAX3107_TXFIFOLVL_REG (0x1100) /* TX FIFO level */
-#define MAX3107_RXFIFOLVL_REG (0x1200) /* RX FIFO level */
-#define MAX3107_FLOWCTRL_REG (0x1300) /* Flow control */
-#define MAX3107_XON1_REG (0x1400) /* XON1 character */
-#define MAX3107_XON2_REG (0x1500) /* XON2 character */
-#define MAX3107_XOFF1_REG (0x1600) /* XOFF1 character */
-#define MAX3107_XOFF2_REG (0x1700) /* XOFF2 character */
-#define MAX3107_GPIOCFG_REG (0x1800) /* GPIO config */
-#define MAX3107_GPIODATA_REG (0x1900) /* GPIO data */
-#define MAX3107_PLLCFG_REG (0x1a00) /* PLL config */
-#define MAX3107_BRGCFG_REG (0x1b00) /* Baud rate generator conf */
-#define MAX3107_BRGDIVLSB_REG (0x1c00) /* Baud rate divisor LSB */
-#define MAX3107_BRGDIVMSB_REG (0x1d00) /* Baud rate divisor MSB */
-#define MAX3107_CLKSRC_REG (0x1e00) /* Clock source */
-#define MAX3107_REVID_REG (0x1f00) /* Revision identification */
-
-/* IRQ register bits */
-#define MAX3107_IRQ_LSR_BIT (1 << 0) /* LSR interrupt */
-#define MAX3107_IRQ_SPCHR_BIT (1 << 1) /* Special char interrupt */
-#define MAX3107_IRQ_STS_BIT (1 << 2) /* Status interrupt */
-#define MAX3107_IRQ_RXFIFO_BIT (1 << 3) /* RX FIFO interrupt */
-#define MAX3107_IRQ_TXFIFO_BIT (1 << 4) /* TX FIFO interrupt */
-#define MAX3107_IRQ_TXEMPTY_BIT (1 << 5) /* TX FIFO empty interrupt */
-#define MAX3107_IRQ_RXEMPTY_BIT (1 << 6) /* RX FIFO empty interrupt */
-#define MAX3107_IRQ_CTS_BIT (1 << 7) /* CTS interrupt */
-
-/* LSR register bits */
-#define MAX3107_LSR_RXTO_BIT (1 << 0) /* RX timeout */
-#define MAX3107_LSR_RXOVR_BIT (1 << 1) /* RX overrun */
-#define MAX3107_LSR_RXPAR_BIT (1 << 2) /* RX parity error */
-#define MAX3107_LSR_FRERR_BIT (1 << 3) /* Frame error */
-#define MAX3107_LSR_RXBRK_BIT (1 << 4) /* RX break */
-#define MAX3107_LSR_RXNOISE_BIT (1 << 5) /* RX noise */
-#define MAX3107_LSR_UNDEF6_BIT (1 << 6) /* Undefined/not used */
-#define MAX3107_LSR_CTS_BIT (1 << 7) /* CTS pin state */
-
-/* Special character register bits */
-#define MAX3107_SPCHR_XON1_BIT (1 << 0) /* XON1 character */
-#define MAX3107_SPCHR_XON2_BIT (1 << 1) /* XON2 character */
-#define MAX3107_SPCHR_XOFF1_BIT (1 << 2) /* XOFF1 character */
-#define MAX3107_SPCHR_XOFF2_BIT (1 << 3) /* XOFF2 character */
-#define MAX3107_SPCHR_BREAK_BIT (1 << 4) /* RX break */
-#define MAX3107_SPCHR_MULTIDROP_BIT (1 << 5) /* 9-bit multidrop addr char */
-#define MAX3107_SPCHR_UNDEF6_BIT (1 << 6) /* Undefined/not used */
-#define MAX3107_SPCHR_UNDEF7_BIT (1 << 7) /* Undefined/not used */
-
-/* Status register bits */
-#define MAX3107_STS_GPIO0_BIT (1 << 0) /* GPIO 0 interrupt */
-#define MAX3107_STS_GPIO1_BIT (1 << 1) /* GPIO 1 interrupt */
-#define MAX3107_STS_GPIO2_BIT (1 << 2) /* GPIO 2 interrupt */
-#define MAX3107_STS_GPIO3_BIT (1 << 3) /* GPIO 3 interrupt */
-#define MAX3107_STS_UNDEF4_BIT (1 << 4) /* Undefined/not used */
-#define MAX3107_STS_CLKREADY_BIT (1 << 5) /* Clock ready */
-#define MAX3107_STS_SLEEP_BIT (1 << 6) /* Sleep interrupt */
-#define MAX3107_STS_UNDEF7_BIT (1 << 7) /* Undefined/not used */
-
-/* MODE1 register bits */
-#define MAX3107_MODE1_RXDIS_BIT (1 << 0) /* RX disable */
-#define MAX3107_MODE1_TXDIS_BIT (1 << 1) /* TX disable */
-#define MAX3107_MODE1_TXHIZ_BIT (1 << 2) /* TX pin three-state */
-#define MAX3107_MODE1_RTSHIZ_BIT (1 << 3) /* RTS pin three-state */
-#define MAX3107_MODE1_TRNSCVCTRL_BIT (1 << 4) /* Transceiver ctrl enable */
-#define MAX3107_MODE1_FORCESLEEP_BIT (1 << 5) /* Force sleep mode */
-#define MAX3107_MODE1_AUTOSLEEP_BIT (1 << 6) /* Auto sleep enable */
-#define MAX3107_MODE1_IRQSEL_BIT (1 << 7) /* IRQ pin enable */
-
-/* MODE2 register bits */
-#define MAX3107_MODE2_RST_BIT (1 << 0) /* Chip reset */
-#define MAX3107_MODE2_FIFORST_BIT (1 << 1) /* FIFO reset */
-#define MAX3107_MODE2_RXTRIGINV_BIT (1 << 2) /* RX FIFO INT invert */
-#define MAX3107_MODE2_RXEMPTINV_BIT (1 << 3) /* RX FIFO empty INT invert */
-#define MAX3107_MODE2_SPCHR_BIT (1 << 4) /* Special chr detect enable */
-#define MAX3107_MODE2_LOOPBACK_BIT (1 << 5) /* Internal loopback enable */
-#define MAX3107_MODE2_MULTIDROP_BIT (1 << 6) /* 9-bit multidrop enable */
-#define MAX3107_MODE2_ECHOSUPR_BIT (1 << 7) /* ECHO suppression enable */
-
-/* LCR register bits */
-#define MAX3107_LCR_LENGTH0_BIT (1 << 0) /* Word length bit 0 */
-#define MAX3107_LCR_LENGTH1_BIT (1 << 1) /* Word length bit 1
- *
- * Word length bits table:
- * 00 -> 5 bit words
- * 01 -> 6 bit words
- * 10 -> 7 bit words
- * 11 -> 8 bit words
- */
-#define MAX3107_LCR_STOPLEN_BIT (1 << 2) /* STOP length bit
- *
- * STOP length bit table:
- * 0 -> 1 stop bit
- * 1 -> 1-1.5 stop bits if
- * word length is 5,
- * 2 stop bits otherwise
- */
-#define MAX3107_LCR_PARITY_BIT (1 << 3) /* Parity bit enable */
-#define MAX3107_LCR_EVENPARITY_BIT (1 << 4) /* Even parity bit enable */
-#define MAX3107_LCR_FORCEPARITY_BIT (1 << 5) /* 9-bit multidrop parity */
-#define MAX3107_LCR_TXBREAK_BIT (1 << 6) /* TX break enable */
-#define MAX3107_LCR_RTS_BIT (1 << 7) /* RTS pin control */
-#define MAX3107_LCR_WORD_LEN_5 (0x0000)
-#define MAX3107_LCR_WORD_LEN_6 (0x0001)
-#define MAX3107_LCR_WORD_LEN_7 (0x0002)
-#define MAX3107_LCR_WORD_LEN_8 (0x0003)
-
-
-/* IRDA register bits */
-#define MAX3107_IRDA_IRDAEN_BIT (1 << 0) /* IRDA mode enable */
-#define MAX3107_IRDA_SIR_BIT (1 << 1) /* SIR mode enable */
-#define MAX3107_IRDA_SHORTIR_BIT (1 << 2) /* Short SIR mode enable */
-#define MAX3107_IRDA_MIR_BIT (1 << 3) /* MIR mode enable */
-#define MAX3107_IRDA_RXINV_BIT (1 << 4) /* RX logic inversion enable */
-#define MAX3107_IRDA_TXINV_BIT (1 << 5) /* TX logic inversion enable */
-#define MAX3107_IRDA_UNDEF6_BIT (1 << 6) /* Undefined/not used */
-#define MAX3107_IRDA_UNDEF7_BIT (1 << 7) /* Undefined/not used */
-
-/* Flow control trigger level register masks */
-#define MAX3107_FLOWLVL_HALT_MASK (0x000f) /* Flow control halt level */
-#define MAX3107_FLOWLVL_RES_MASK (0x00f0) /* Flow control resume level */
-#define MAX3107_FLOWLVL_HALT(words) ((words/8) & 0x000f)
-#define MAX3107_FLOWLVL_RES(words) (((words/8) & 0x000f) << 4)
-
-/* FIFO interrupt trigger level register masks */
-#define MAX3107_FIFOTRIGLVL_TX_MASK (0x000f) /* TX FIFO trigger level */
-#define MAX3107_FIFOTRIGLVL_RX_MASK (0x00f0) /* RX FIFO trigger level */
-#define MAX3107_FIFOTRIGLVL_TX(words) ((words/8) & 0x000f)
-#define MAX3107_FIFOTRIGLVL_RX(words) (((words/8) & 0x000f) << 4)
-
-/* Flow control register bits */
-#define MAX3107_FLOWCTRL_AUTORTS_BIT (1 << 0) /* Auto RTS flow ctrl enable */
-#define MAX3107_FLOWCTRL_AUTOCTS_BIT (1 << 1) /* Auto CTS flow ctrl enable */
-#define MAX3107_FLOWCTRL_GPIADDR_BIT (1 << 2) /* Enables that GPIO inputs
- * are used in conjunction with
- * XOFF2 for definition of
- * special character */
-#define MAX3107_FLOWCTRL_SWFLOWEN_BIT (1 << 3) /* Auto SW flow ctrl enable */
-#define MAX3107_FLOWCTRL_SWFLOW0_BIT (1 << 4) /* SWFLOW bit 0 */
-#define MAX3107_FLOWCTRL_SWFLOW1_BIT (1 << 5) /* SWFLOW bit 1
- *
- * SWFLOW bits 1 & 0 table:
- * 00 -> no transmitter flow
- * control
- * 01 -> receiver compares
- * XON2 and XOFF2
- * and controls
- * transmitter
- * 10 -> receiver compares
- * XON1 and XOFF1
- * and controls
- * transmitter
- * 11 -> receiver compares
- * XON1, XON2, XOFF1 and
- * XOFF2 and controls
- * transmitter
- */
-#define MAX3107_FLOWCTRL_SWFLOW2_BIT (1 << 6) /* SWFLOW bit 2 */
-#define MAX3107_FLOWCTRL_SWFLOW3_BIT (1 << 7) /* SWFLOW bit 3
- *
- * SWFLOW bits 3 & 2 table:
- * 00 -> no received flow
- * control
- * 01 -> transmitter generates
- * XON2 and XOFF2
- * 10 -> transmitter generates
- * XON1 and XOFF1
- * 11 -> transmitter generates
- * XON1, XON2, XOFF1 and
- * XOFF2
- */
-
-/* GPIO configuration register bits */
-#define MAX3107_GPIOCFG_GP0OUT_BIT (1 << 0) /* GPIO 0 output enable */
-#define MAX3107_GPIOCFG_GP1OUT_BIT (1 << 1) /* GPIO 1 output enable */
-#define MAX3107_GPIOCFG_GP2OUT_BIT (1 << 2) /* GPIO 2 output enable */
-#define MAX3107_GPIOCFG_GP3OUT_BIT (1 << 3) /* GPIO 3 output enable */
-#define MAX3107_GPIOCFG_GP0OD_BIT (1 << 4) /* GPIO 0 open-drain enable */
-#define MAX3107_GPIOCFG_GP1OD_BIT (1 << 5) /* GPIO 1 open-drain enable */
-#define MAX3107_GPIOCFG_GP2OD_BIT (1 << 6) /* GPIO 2 open-drain enable */
-#define MAX3107_GPIOCFG_GP3OD_BIT (1 << 7) /* GPIO 3 open-drain enable */
-
-/* GPIO DATA register bits */
-#define MAX3107_GPIODATA_GP0OUT_BIT (1 << 0) /* GPIO 0 output value */
-#define MAX3107_GPIODATA_GP1OUT_BIT (1 << 1) /* GPIO 1 output value */
-#define MAX3107_GPIODATA_GP2OUT_BIT (1 << 2) /* GPIO 2 output value */
-#define MAX3107_GPIODATA_GP3OUT_BIT (1 << 3) /* GPIO 3 output value */
-#define MAX3107_GPIODATA_GP0IN_BIT (1 << 4) /* GPIO 0 input value */
-#define MAX3107_GPIODATA_GP1IN_BIT (1 << 5) /* GPIO 1 input value */
-#define MAX3107_GPIODATA_GP2IN_BIT (1 << 6) /* GPIO 2 input value */
-#define MAX3107_GPIODATA_GP3IN_BIT (1 << 7) /* GPIO 3 input value */
-
-/* PLL configuration register masks */
-#define MAX3107_PLLCFG_PREDIV_MASK (0x003f) /* PLL predivision value */
-#define MAX3107_PLLCFG_PLLFACTOR_MASK (0x00c0) /* PLL multiplication factor */
-
-/* Baud rate generator configuration register masks and bits */
-#define MAX3107_BRGCFG_FRACT_MASK (0x000f) /* Fractional portion of
- * Baud rate generator divisor
- */
-#define MAX3107_BRGCFG_2XMODE_BIT (1 << 4) /* Double baud rate */
-#define MAX3107_BRGCFG_4XMODE_BIT (1 << 5) /* Quadruple baud rate */
-#define MAX3107_BRGCFG_UNDEF6_BIT (1 << 6) /* Undefined/not used */
-#define MAX3107_BRGCFG_UNDEF7_BIT (1 << 7) /* Undefined/not used */
-
-/* Clock source register bits */
-#define MAX3107_CLKSRC_INTOSC_BIT (1 << 0) /* Internal osc enable */
-#define MAX3107_CLKSRC_CRYST_BIT (1 << 1) /* Crystal osc enable */
-#define MAX3107_CLKSRC_PLL_BIT (1 << 2) /* PLL enable */
-#define MAX3107_CLKSRC_PLLBYP_BIT (1 << 3) /* PLL bypass */
-#define MAX3107_CLKSRC_EXTCLK_BIT (1 << 4) /* External clock enable */
-#define MAX3107_CLKSRC_UNDEF5_BIT (1 << 5) /* Undefined/not used */
-#define MAX3107_CLKSRC_UNDEF6_BIT (1 << 6) /* Undefined/not used */
-#define MAX3107_CLKSRC_CLK2RTS_BIT (1 << 7) /* Baud clk to RTS pin */
-
-
-/* HW definitions */
-#define MAX3107_RX_FIFO_SIZE 128
-#define MAX3107_TX_FIFO_SIZE 128
-#define MAX3107_REVID1 0x00a0
-#define MAX3107_REVID2 0x00a1
-
-
-/* Baud rate generator configuration values for external clock 13MHz */
-#define MAX3107_BRG13_B300 (0x0A9400 | 0x05)
-#define MAX3107_BRG13_B600 (0x054A00 | 0x03)
-#define MAX3107_BRG13_B1200 (0x02A500 | 0x01)
-#define MAX3107_BRG13_B2400 (0x015200 | 0x09)
-#define MAX3107_BRG13_B4800 (0x00A900 | 0x04)
-#define MAX3107_BRG13_B9600 (0x005400 | 0x0A)
-#define MAX3107_BRG13_B19200 (0x002A00 | 0x05)
-#define MAX3107_BRG13_B38400 (0x001500 | 0x03)
-#define MAX3107_BRG13_B57600 (0x000E00 | 0x02)
-#define MAX3107_BRG13_B115200 (0x000700 | 0x01)
-#define MAX3107_BRG13_B230400 (0x000300 | 0x08)
-#define MAX3107_BRG13_B460800 (0x000100 | 0x0c)
-#define MAX3107_BRG13_B921600 (0x000100 | 0x1c)
-
-/* Baud rate generator configuration values for external clock 26MHz */
-#define MAX3107_BRG26_B300 (0x152800 | 0x0A)
-#define MAX3107_BRG26_B600 (0x0A9400 | 0x05)
-#define MAX3107_BRG26_B1200 (0x054A00 | 0x03)
-#define MAX3107_BRG26_B2400 (0x02A500 | 0x01)
-#define MAX3107_BRG26_B4800 (0x015200 | 0x09)
-#define MAX3107_BRG26_B9600 (0x00A900 | 0x04)
-#define MAX3107_BRG26_B19200 (0x005400 | 0x0A)
-#define MAX3107_BRG26_B38400 (0x002A00 | 0x05)
-#define MAX3107_BRG26_B57600 (0x001C00 | 0x03)
-#define MAX3107_BRG26_B115200 (0x000E00 | 0x02)
-#define MAX3107_BRG26_B230400 (0x000700 | 0x01)
-#define MAX3107_BRG26_B460800 (0x000300 | 0x08)
-#define MAX3107_BRG26_B921600 (0x000100 | 0x0C)
-
-/* Baud rate generator configuration values for internal clock */
-#define MAX3107_BRG13_IB300 (0x008000 | 0x00)
-#define MAX3107_BRG13_IB600 (0x004000 | 0x00)
-#define MAX3107_BRG13_IB1200 (0x002000 | 0x00)
-#define MAX3107_BRG13_IB2400 (0x001000 | 0x00)
-#define MAX3107_BRG13_IB4800 (0x000800 | 0x00)
-#define MAX3107_BRG13_IB9600 (0x000400 | 0x00)
-#define MAX3107_BRG13_IB19200 (0x000200 | 0x00)
-#define MAX3107_BRG13_IB38400 (0x000100 | 0x00)
-#define MAX3107_BRG13_IB57600 (0x000000 | 0x0B)
-#define MAX3107_BRG13_IB115200 (0x000000 | 0x05)
-#define MAX3107_BRG13_IB230400 (0x000000 | 0x03)
-#define MAX3107_BRG13_IB460800 (0x000000 | 0x00)
-#define MAX3107_BRG13_IB921600 (0x000000 | 0x00)
-
-
-struct baud_table {
- int baud;
- u32 new_brg;
-};
-
-struct max3107_port {
- /* UART port structure */
- struct uart_port port;
-
- /* SPI device structure */
- struct spi_device *spi;
-
-#if defined(CONFIG_GPIOLIB)
- /* GPIO chip structure */
- struct gpio_chip chip;
-#endif
-
- /* Workqueue that does all the magic */
- struct workqueue_struct *workqueue;
- struct work_struct work;
-
- /* Lock for shared data */
- spinlock_t data_lock;
-
- /* Device configuration */
- int ext_clk; /* 1 if external clock used */
- int loopback; /* Current loopback mode state */
- int baud; /* Current baud rate */
-
- /* State flags */
- int suspended; /* Indicates suspend mode */
- int tx_fifo_empty; /* Flag for TX FIFO state */
- int rx_enabled; /* Flag for receiver state */
- int tx_enabled; /* Flag for transmitter state */
-
- u16 irqen_reg; /* Current IRQ enable register value */
- /* Shared data */
- u16 mode1_reg; /* Current mode1 register value*/
- int mode1_commit; /* Flag for setting new mode1 register value */
- u16 lcr_reg; /* Current LCR register value */
- int lcr_commit; /* Flag for setting new LCR register value */
- u32 brg_cfg; /* Current Baud rate generator config */
- int brg_commit; /* Flag for setting new baud rate generator
- * config
- */
- struct baud_table *baud_tbl;
- int handle_irq; /* Indicates that IRQ should be handled */
-
- /* Rx buffer and str*/
- u16 *rxbuf;
- u8 *rxstr;
- /* Tx buffer*/
- u16 *txbuf;
-
- struct max3107_plat *pdata; /* Platform data */
-};
-
-/* Platform data structure */
-struct max3107_plat {
- /* Loopback mode enable */
- int loopback;
- /* External clock enable */
- int ext_clk;
- /* Called during the register initialisation */
- void (*init)(struct max3107_port *s);
- /* Called when the port is found and configured */
- int (*configure)(struct max3107_port *s);
- /* HW suspend function */
- void (*hw_suspend) (struct max3107_port *s, int suspend);
- /* Polling mode enable */
- int polled_mode;
- /* Polling period if polling mode enabled */
- int poll_time;
-};
-
-extern int max3107_rw(struct max3107_port *s, u8 *tx, u8 *rx, int len);
-extern void max3107_hw_susp(struct max3107_port *s, int suspend);
-extern int max3107_probe(struct spi_device *spi, struct max3107_plat *pdata);
-extern int max3107_remove(struct spi_device *spi);
-extern int max3107_suspend(struct spi_device *spi, pm_message_t state);
-extern int max3107_resume(struct spi_device *spi);
-
-#endif /* _LINUX_SERIAL_MAX3107_H */
diff --git a/drivers/tty/serial/max310x.c b/drivers/tty/serial/max310x.c
new file mode 100644
index 00000000000..2bc28a59d38
--- /dev/null
+++ b/drivers/tty/serial/max310x.c
@@ -0,0 +1,1260 @@
+/*
+ * Maxim (Dallas) MAX3107/8 serial driver
+ *
+ * Copyright (C) 2012 Alexander Shiyan <shc_work@mail.ru>
+ *
+ * Based on max3100.c, by Christian Pellegrin <chripell@evolware.org>
+ * Based on max3110.c, by Feng Tang <feng.tang@intel.com>
+ * Based on max3107.c, by Aavamobile
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+/* TODO: MAX3109 support (Dual) */
+/* TODO: MAX14830 support (Quad) */
+
+#include <linux/module.h>
+#include <linux/device.h>
+#include <linux/serial_core.h>
+#include <linux/serial.h>
+#include <linux/tty.h>
+#include <linux/tty_flip.h>
+#include <linux/regmap.h>
+#include <linux/gpio.h>
+#include <linux/spi/spi.h>
+#include <linux/platform_data/max310x.h>
+
+#define MAX310X_MAJOR 204
+#define MAX310X_MINOR 209
+
+/* MAX310X register definitions */
+#define MAX310X_RHR_REG (0x00) /* RX FIFO */
+#define MAX310X_THR_REG (0x00) /* TX FIFO */
+#define MAX310X_IRQEN_REG (0x01) /* IRQ enable */
+#define MAX310X_IRQSTS_REG (0x02) /* IRQ status */
+#define MAX310X_LSR_IRQEN_REG (0x03) /* LSR IRQ enable */
+#define MAX310X_LSR_IRQSTS_REG (0x04) /* LSR IRQ status */
+#define MAX310X_SPCHR_IRQEN_REG (0x05) /* Special char IRQ enable */
+#define MAX310X_SPCHR_IRQSTS_REG (0x06) /* Special char IRQ status */
+#define MAX310X_STS_IRQEN_REG (0x07) /* Status IRQ enable */
+#define MAX310X_STS_IRQSTS_REG (0x08) /* Status IRQ status */
+#define MAX310X_MODE1_REG (0x09) /* MODE1 */
+#define MAX310X_MODE2_REG (0x0a) /* MODE2 */
+#define MAX310X_LCR_REG (0x0b) /* LCR */
+#define MAX310X_RXTO_REG (0x0c) /* RX timeout */
+#define MAX310X_HDPIXDELAY_REG (0x0d) /* Auto transceiver delays */
+#define MAX310X_IRDA_REG (0x0e) /* IRDA settings */
+#define MAX310X_FLOWLVL_REG (0x0f) /* Flow control levels */
+#define MAX310X_FIFOTRIGLVL_REG (0x10) /* FIFO IRQ trigger levels */
+#define MAX310X_TXFIFOLVL_REG (0x11) /* TX FIFO level */
+#define MAX310X_RXFIFOLVL_REG (0x12) /* RX FIFO level */
+#define MAX310X_FLOWCTRL_REG (0x13) /* Flow control */
+#define MAX310X_XON1_REG (0x14) /* XON1 character */
+#define MAX310X_XON2_REG (0x15) /* XON2 character */
+#define MAX310X_XOFF1_REG (0x16) /* XOFF1 character */
+#define MAX310X_XOFF2_REG (0x17) /* XOFF2 character */
+#define MAX310X_GPIOCFG_REG (0x18) /* GPIO config */
+#define MAX310X_GPIODATA_REG (0x19) /* GPIO data */
+#define MAX310X_PLLCFG_REG (0x1a) /* PLL config */
+#define MAX310X_BRGCFG_REG (0x1b) /* Baud rate generator conf */
+#define MAX310X_BRGDIVLSB_REG (0x1c) /* Baud rate divisor LSB */
+#define MAX310X_BRGDIVMSB_REG (0x1d) /* Baud rate divisor MSB */
+#define MAX310X_CLKSRC_REG (0x1e) /* Clock source */
+/* Only present in MAX3107 */
+#define MAX3107_REVID_REG (0x1f) /* Revision identification */
+
+/* IRQ register bits */
+#define MAX310X_IRQ_LSR_BIT (1 << 0) /* LSR interrupt */
+#define MAX310X_IRQ_SPCHR_BIT (1 << 1) /* Special char interrupt */
+#define MAX310X_IRQ_STS_BIT (1 << 2) /* Status interrupt */
+#define MAX310X_IRQ_RXFIFO_BIT (1 << 3) /* RX FIFO interrupt */
+#define MAX310X_IRQ_TXFIFO_BIT (1 << 4) /* TX FIFO interrupt */
+#define MAX310X_IRQ_TXEMPTY_BIT (1 << 5) /* TX FIFO empty interrupt */
+#define MAX310X_IRQ_RXEMPTY_BIT (1 << 6) /* RX FIFO empty interrupt */
+#define MAX310X_IRQ_CTS_BIT (1 << 7) /* CTS interrupt */
+
+/* LSR register bits */
+#define MAX310X_LSR_RXTO_BIT (1 << 0) /* RX timeout */
+#define MAX310X_LSR_RXOVR_BIT (1 << 1) /* RX overrun */
+#define MAX310X_LSR_RXPAR_BIT (1 << 2) /* RX parity error */
+#define MAX310X_LSR_FRERR_BIT (1 << 3) /* Frame error */
+#define MAX310X_LSR_RXBRK_BIT (1 << 4) /* RX break */
+#define MAX310X_LSR_RXNOISE_BIT (1 << 5) /* RX noise */
+#define MAX310X_LSR_CTS_BIT (1 << 7) /* CTS pin state */
+
+/* Special character register bits */
+#define MAX310X_SPCHR_XON1_BIT (1 << 0) /* XON1 character */
+#define MAX310X_SPCHR_XON2_BIT (1 << 1) /* XON2 character */
+#define MAX310X_SPCHR_XOFF1_BIT (1 << 2) /* XOFF1 character */
+#define MAX310X_SPCHR_XOFF2_BIT (1 << 3) /* XOFF2 character */
+#define MAX310X_SPCHR_BREAK_BIT (1 << 4) /* RX break */
+#define MAX310X_SPCHR_MULTIDROP_BIT (1 << 5) /* 9-bit multidrop addr char */
+
+/* Status register bits */
+#define MAX310X_STS_GPIO0_BIT (1 << 0) /* GPIO 0 interrupt */
+#define MAX310X_STS_GPIO1_BIT (1 << 1) /* GPIO 1 interrupt */
+#define MAX310X_STS_GPIO2_BIT (1 << 2) /* GPIO 2 interrupt */
+#define MAX310X_STS_GPIO3_BIT (1 << 3) /* GPIO 3 interrupt */
+#define MAX310X_STS_CLKREADY_BIT (1 << 5) /* Clock ready */
+#define MAX310X_STS_SLEEP_BIT (1 << 6) /* Sleep interrupt */
+
+/* MODE1 register bits */
+#define MAX310X_MODE1_RXDIS_BIT (1 << 0) /* RX disable */
+#define MAX310X_MODE1_TXDIS_BIT (1 << 1) /* TX disable */
+#define MAX310X_MODE1_TXHIZ_BIT (1 << 2) /* TX pin three-state */
+#define MAX310X_MODE1_RTSHIZ_BIT (1 << 3) /* RTS pin three-state */
+#define MAX310X_MODE1_TRNSCVCTRL_BIT (1 << 4) /* Transceiver ctrl enable */
+#define MAX310X_MODE1_FORCESLEEP_BIT (1 << 5) /* Force sleep mode */
+#define MAX310X_MODE1_AUTOSLEEP_BIT (1 << 6) /* Auto sleep enable */
+#define MAX310X_MODE1_IRQSEL_BIT (1 << 7) /* IRQ pin enable */
+
+/* MODE2 register bits */
+#define MAX310X_MODE2_RST_BIT (1 << 0) /* Chip reset */
+#define MAX310X_MODE2_FIFORST_BIT (1 << 1) /* FIFO reset */
+#define MAX310X_MODE2_RXTRIGINV_BIT (1 << 2) /* RX FIFO INT invert */
+#define MAX310X_MODE2_RXEMPTINV_BIT (1 << 3) /* RX FIFO empty INT invert */
+#define MAX310X_MODE2_SPCHR_BIT (1 << 4) /* Special chr detect enable */
+#define MAX310X_MODE2_LOOPBACK_BIT (1 << 5) /* Internal loopback enable */
+#define MAX310X_MODE2_MULTIDROP_BIT (1 << 6) /* 9-bit multidrop enable */
+#define MAX310X_MODE2_ECHOSUPR_BIT (1 << 7) /* ECHO suppression enable */
+
+/* LCR register bits */
+#define MAX310X_LCR_LENGTH0_BIT (1 << 0) /* Word length bit 0 */
+#define MAX310X_LCR_LENGTH1_BIT (1 << 1) /* Word length bit 1
+ *
+ * Word length bits table:
+ * 00 -> 5 bit words
+ * 01 -> 6 bit words
+ * 10 -> 7 bit words
+ * 11 -> 8 bit words
+ */
+#define MAX310X_LCR_STOPLEN_BIT (1 << 2) /* STOP length bit
+ *
+ * STOP length bit table:
+ * 0 -> 1 stop bit
+ * 1 -> 1-1.5 stop bits if
+ * word length is 5,
+ * 2 stop bits otherwise
+ */
+#define MAX310X_LCR_PARITY_BIT (1 << 3) /* Parity bit enable */
+#define MAX310X_LCR_EVENPARITY_BIT (1 << 4) /* Even parity bit enable */
+#define MAX310X_LCR_FORCEPARITY_BIT (1 << 5) /* 9-bit multidrop parity */
+#define MAX310X_LCR_TXBREAK_BIT (1 << 6) /* TX break enable */
+#define MAX310X_LCR_RTS_BIT (1 << 7) /* RTS pin control */
+#define MAX310X_LCR_WORD_LEN_5 (0x00)
+#define MAX310X_LCR_WORD_LEN_6 (0x01)
+#define MAX310X_LCR_WORD_LEN_7 (0x02)
+#define MAX310X_LCR_WORD_LEN_8 (0x03)
+
+/* IRDA register bits */
+#define MAX310X_IRDA_IRDAEN_BIT (1 << 0) /* IRDA mode enable */
+#define MAX310X_IRDA_SIR_BIT (1 << 1) /* SIR mode enable */
+#define MAX310X_IRDA_SHORTIR_BIT (1 << 2) /* Short SIR mode enable */
+#define MAX310X_IRDA_MIR_BIT (1 << 3) /* MIR mode enable */
+#define MAX310X_IRDA_RXINV_BIT (1 << 4) /* RX logic inversion enable */
+#define MAX310X_IRDA_TXINV_BIT (1 << 5) /* TX logic inversion enable */
+
+/* Flow control trigger level register masks */
+#define MAX310X_FLOWLVL_HALT_MASK (0x000f) /* Flow control halt level */
+#define MAX310X_FLOWLVL_RES_MASK (0x00f0) /* Flow control resume level */
+#define MAX310X_FLOWLVL_HALT(words) ((words / 8) & 0x0f)
+#define MAX310X_FLOWLVL_RES(words) (((words / 8) & 0x0f) << 4)
+
+/* FIFO interrupt trigger level register masks */
+#define MAX310X_FIFOTRIGLVL_TX_MASK (0x0f) /* TX FIFO trigger level */
+#define MAX310X_FIFOTRIGLVL_RX_MASK (0xf0) /* RX FIFO trigger level */
+#define MAX310X_FIFOTRIGLVL_TX(words) ((words / 8) & 0x0f)
+#define MAX310X_FIFOTRIGLVL_RX(words) (((words / 8) & 0x0f) << 4)
+
+/* Flow control register bits */
+#define MAX310X_FLOWCTRL_AUTORTS_BIT (1 << 0) /* Auto RTS flow ctrl enable */
+#define MAX310X_FLOWCTRL_AUTOCTS_BIT (1 << 1) /* Auto CTS flow ctrl enable */
+#define MAX310X_FLOWCTRL_GPIADDR_BIT (1 << 2) /* Enables that GPIO inputs
+ * are used in conjunction with
+ * XOFF2 for definition of
+ * special character */
+#define MAX310X_FLOWCTRL_SWFLOWEN_BIT (1 << 3) /* Auto SW flow ctrl enable */
+#define MAX310X_FLOWCTRL_SWFLOW0_BIT (1 << 4) /* SWFLOW bit 0 */
+#define MAX310X_FLOWCTRL_SWFLOW1_BIT (1 << 5) /* SWFLOW bit 1
+ *
+ * SWFLOW bits 1 & 0 table:
+ * 00 -> no transmitter flow
+ * control
+ * 01 -> receiver compares
+ * XON2 and XOFF2
+ * and controls
+ * transmitter
+ * 10 -> receiver compares
+ * XON1 and XOFF1
+ * and controls
+ * transmitter
+ * 11 -> receiver compares
+ * XON1, XON2, XOFF1 and
+ * XOFF2 and controls
+ * transmitter
+ */
+#define MAX310X_FLOWCTRL_SWFLOW2_BIT (1 << 6) /* SWFLOW bit 2 */
+#define MAX310X_FLOWCTRL_SWFLOW3_BIT (1 << 7) /* SWFLOW bit 3
+ *
+ * SWFLOW bits 3 & 2 table:
+ * 00 -> no received flow
+ * control
+ * 01 -> transmitter generates
+ * XON2 and XOFF2
+ * 10 -> transmitter generates
+ * XON1 and XOFF1
+ * 11 -> transmitter generates
+ * XON1, XON2, XOFF1 and
+ * XOFF2
+ */
+
+/* GPIO configuration register bits */
+#define MAX310X_GPIOCFG_GP0OUT_BIT (1 << 0) /* GPIO 0 output enable */
+#define MAX310X_GPIOCFG_GP1OUT_BIT (1 << 1) /* GPIO 1 output enable */
+#define MAX310X_GPIOCFG_GP2OUT_BIT (1 << 2) /* GPIO 2 output enable */
+#define MAX310X_GPIOCFG_GP3OUT_BIT (1 << 3) /* GPIO 3 output enable */
+#define MAX310X_GPIOCFG_GP0OD_BIT (1 << 4) /* GPIO 0 open-drain enable */
+#define MAX310X_GPIOCFG_GP1OD_BIT (1 << 5) /* GPIO 1 open-drain enable */
+#define MAX310X_GPIOCFG_GP2OD_BIT (1 << 6) /* GPIO 2 open-drain enable */
+#define MAX310X_GPIOCFG_GP3OD_BIT (1 << 7) /* GPIO 3 open-drain enable */
+
+/* GPIO DATA register bits */
+#define MAX310X_GPIODATA_GP0OUT_BIT (1 << 0) /* GPIO 0 output value */
+#define MAX310X_GPIODATA_GP1OUT_BIT (1 << 1) /* GPIO 1 output value */
+#define MAX310X_GPIODATA_GP2OUT_BIT (1 << 2) /* GPIO 2 output value */
+#define MAX310X_GPIODATA_GP3OUT_BIT (1 << 3) /* GPIO 3 output value */
+#define MAX310X_GPIODATA_GP0IN_BIT (1 << 4) /* GPIO 0 input value */
+#define MAX310X_GPIODATA_GP1IN_BIT (1 << 5) /* GPIO 1 input value */
+#define MAX310X_GPIODATA_GP2IN_BIT (1 << 6) /* GPIO 2 input value */
+#define MAX310X_GPIODATA_GP3IN_BIT (1 << 7) /* GPIO 3 input value */
+
+/* PLL configuration register masks */
+#define MAX310X_PLLCFG_PREDIV_MASK (0x3f) /* PLL predivision value */
+#define MAX310X_PLLCFG_PLLFACTOR_MASK (0xc0) /* PLL multiplication factor */
+
+/* Baud rate generator configuration register bits */
+#define MAX310X_BRGCFG_2XMODE_BIT (1 << 4) /* Double baud rate */
+#define MAX310X_BRGCFG_4XMODE_BIT (1 << 5) /* Quadruple baud rate */
+
+/* Clock source register bits */
+#define MAX310X_CLKSRC_CRYST_BIT (1 << 1) /* Crystal osc enable */
+#define MAX310X_CLKSRC_PLL_BIT (1 << 2) /* PLL enable */
+#define MAX310X_CLKSRC_PLLBYP_BIT (1 << 3) /* PLL bypass */
+#define MAX310X_CLKSRC_EXTCLK_BIT (1 << 4) /* External clock enable */
+#define MAX310X_CLKSRC_CLK2RTS_BIT (1 << 7) /* Baud clk to RTS pin */
+
+/* Misc definitions */
+#define MAX310X_FIFO_SIZE (128)
+
+/* MAX3107 specific */
+#define MAX3107_REV_ID (0xa0)
+#define MAX3107_REV_MASK (0xfe)
+
+/* IRQ status bits definitions */
+#define MAX310X_IRQ_TX (MAX310X_IRQ_TXFIFO_BIT | \
+ MAX310X_IRQ_TXEMPTY_BIT)
+#define MAX310X_IRQ_RX (MAX310X_IRQ_RXFIFO_BIT | \
+ MAX310X_IRQ_RXEMPTY_BIT)
+
+/* Supported chip types */
+enum {
+ MAX310X_TYPE_MAX3107 = 3107,
+ MAX310X_TYPE_MAX3108 = 3108,
+};
+
+struct max310x_port {
+ struct uart_driver uart;
+ struct uart_port port;
+
+ const char *name;
+ int uartclk;
+
+ unsigned int nr_gpio;
+#ifdef CONFIG_GPIOLIB
+ struct gpio_chip gpio;
+#endif
+
+ struct regmap *regmap;
+ struct regmap_config regcfg;
+
+ struct workqueue_struct *wq;
+ struct work_struct tx_work;
+
+ struct mutex max310x_mutex;
+
+ struct max310x_pdata *pdata;
+};
+
+static bool max3107_8_reg_writeable(struct device *dev, unsigned int reg)
+{
+ switch (reg) {
+ case MAX310X_IRQSTS_REG:
+ case MAX310X_LSR_IRQSTS_REG:
+ case MAX310X_SPCHR_IRQSTS_REG:
+ case MAX310X_STS_IRQSTS_REG:
+ case MAX310X_TXFIFOLVL_REG:
+ case MAX310X_RXFIFOLVL_REG:
+ case MAX3107_REVID_REG: /* Only available on MAX3107 */
+ return false;
+ default:
+ break;
+ }
+
+ return true;
+}
+
+static bool max310x_reg_volatile(struct device *dev, unsigned int reg)
+{
+ switch (reg) {
+ case MAX310X_RHR_REG:
+ case MAX310X_IRQSTS_REG:
+ case MAX310X_LSR_IRQSTS_REG:
+ case MAX310X_SPCHR_IRQSTS_REG:
+ case MAX310X_STS_IRQSTS_REG:
+ case MAX310X_TXFIFOLVL_REG:
+ case MAX310X_RXFIFOLVL_REG:
+ case MAX310X_GPIODATA_REG:
+ return true;
+ default:
+ break;
+ }
+
+ return false;
+}
+
+static bool max310x_reg_precious(struct device *dev, unsigned int reg)
+{
+ switch (reg) {
+ case MAX310X_RHR_REG:
+ case MAX310X_IRQSTS_REG:
+ case MAX310X_SPCHR_IRQSTS_REG:
+ case MAX310X_STS_IRQSTS_REG:
+ return true;
+ default:
+ break;
+ }
+
+ return false;
+}
+
+static void max310x_set_baud(struct max310x_port *s, int baud)
+{
+ unsigned int mode = 0, div = s->uartclk / baud;
+
+ if (!(div / 16)) {
+ /* Mode x2 */
+ mode = MAX310X_BRGCFG_2XMODE_BIT;
+ div = (s->uartclk * 2) / baud;
+ }
+
+ if (!(div / 16)) {
+ /* Mode x4 */
+ mode = MAX310X_BRGCFG_4XMODE_BIT;
+ div = (s->uartclk * 4) / baud;
+ }
+
+ regmap_write(s->regmap, MAX310X_BRGDIVMSB_REG,
+ ((div / 16) >> 8) & 0xff);
+ regmap_write(s->regmap, MAX310X_BRGDIVLSB_REG, (div / 16) & 0xff);
+ regmap_write(s->regmap, MAX310X_BRGCFG_REG, (div % 16) | mode);
+}
+
+static void max310x_wait_pll(struct max310x_port *s)
+{
+ int tryes = 1000;
+
+ /* Wait for PLL only if crystal is used */
+ if (!(s->pdata->driver_flags & MAX310X_EXT_CLK)) {
+ unsigned int sts = 0;
+
+ while (tryes--) {
+ regmap_read(s->regmap, MAX310X_STS_IRQSTS_REG, &sts);
+ if (sts & MAX310X_STS_CLKREADY_BIT)
+ break;
+ }
+ }
+}
+
+static int __devinit max310x_update_best_err(unsigned long f, long *besterr)
+{
+ /* Use baudrate 115200 for calculate error */
+ long err = f % (115200 * 16);
+
+ if ((*besterr < 0) || (*besterr > err)) {
+ *besterr = err;
+ return 0;
+ }
+
+ return 1;
+}
+
+static int __devinit max310x_set_ref_clk(struct max310x_port *s)
+{
+ unsigned int div, clksrc, pllcfg = 0;
+ long besterr = -1;
+ unsigned long fdiv, fmul, bestfreq = s->pdata->frequency;
+
+ /* First, update error without PLL */
+ max310x_update_best_err(s->pdata->frequency, &besterr);
+
+ /* Try all possible PLL dividers */
+ for (div = 1; (div <= 63) && besterr; div++) {
+ fdiv = DIV_ROUND_CLOSEST(s->pdata->frequency, div);
+
+ /* Try multiplier 6 */
+ fmul = fdiv * 6;
+ if ((fdiv >= 500000) && (fdiv <= 800000))
+ if (!max310x_update_best_err(fmul, &besterr)) {
+ pllcfg = (0 << 6) | div;
+ bestfreq = fmul;
+ }
+ /* Try multiplier 48 */
+ fmul = fdiv * 48;
+ if ((fdiv >= 850000) && (fdiv <= 1200000))
+ if (!max310x_update_best_err(fmul, &besterr)) {
+ pllcfg = (1 << 6) | div;
+ bestfreq = fmul;
+ }
+ /* Try multiplier 96 */
+ fmul = fdiv * 96;
+ if ((fdiv >= 425000) && (fdiv <= 1000000))
+ if (!max310x_update_best_err(fmul, &besterr)) {
+ pllcfg = (2 << 6) | div;
+ bestfreq = fmul;
+ }
+ /* Try multiplier 144 */
+ fmul = fdiv * 144;
+ if ((fdiv >= 390000) && (fdiv <= 667000))
+ if (!max310x_update_best_err(fmul, &besterr)) {
+ pllcfg = (3 << 6) | div;
+ bestfreq = fmul;
+ }
+ }
+
+ /* Configure clock source */
+ if (s->pdata->driver_flags & MAX310X_EXT_CLK)
+ clksrc = MAX310X_CLKSRC_EXTCLK_BIT;
+ else
+ clksrc = MAX310X_CLKSRC_CRYST_BIT;
+
+ /* Configure PLL */
+ if (pllcfg) {
+ clksrc |= MAX310X_CLKSRC_PLL_BIT;
+ regmap_write(s->regmap, MAX310X_PLLCFG_REG, pllcfg);
+ } else
+ clksrc |= MAX310X_CLKSRC_PLLBYP_BIT;
+
+ regmap_write(s->regmap, MAX310X_CLKSRC_REG, clksrc);
+
+ if (pllcfg)
+ max310x_wait_pll(s);
+
+ dev_dbg(s->port.dev, "Reference clock set to %lu Hz\n", bestfreq);
+
+ return (int)bestfreq;
+}
+
+static void max310x_handle_rx(struct max310x_port *s, unsigned int rxlen)
+{
+ unsigned int sts = 0, ch = 0, flag;
+ struct tty_struct *tty = tty_port_tty_get(&s->port.state->port);
+
+ if (!tty)
+ return;
+
+ if (unlikely(rxlen >= MAX310X_FIFO_SIZE)) {
+ dev_warn(s->port.dev, "Possible RX FIFO overrun %d\n", rxlen);
+ /* Ensure sanity of RX level */
+ rxlen = MAX310X_FIFO_SIZE;
+ }
+
+ dev_dbg(s->port.dev, "RX Len = %u\n", rxlen);
+
+ while (rxlen--) {
+ regmap_read(s->regmap, MAX310X_RHR_REG, &ch);
+ regmap_read(s->regmap, MAX310X_LSR_IRQSTS_REG, &sts);
+
+ sts &= MAX310X_LSR_RXPAR_BIT | MAX310X_LSR_FRERR_BIT |
+ MAX310X_LSR_RXOVR_BIT | MAX310X_LSR_RXBRK_BIT;
+
+ s->port.icount.rx++;
+ flag = TTY_NORMAL;
+
+ if (unlikely(sts)) {
+ if (sts & MAX310X_LSR_RXBRK_BIT) {
+ s->port.icount.brk++;
+ if (uart_handle_break(&s->port))
+ continue;
+ } else if (sts & MAX310X_LSR_RXPAR_BIT)
+ s->port.icount.parity++;
+ else if (sts & MAX310X_LSR_FRERR_BIT)
+ s->port.icount.frame++;
+ else if (sts & MAX310X_LSR_RXOVR_BIT)
+ s->port.icount.overrun++;
+
+ sts &= s->port.read_status_mask;
+ if (sts & MAX310X_LSR_RXBRK_BIT)
+ flag = TTY_BREAK;
+ else if (sts & MAX310X_LSR_RXPAR_BIT)
+ flag = TTY_PARITY;
+ else if (sts & MAX310X_LSR_FRERR_BIT)
+ flag = TTY_FRAME;
+ else if (sts & MAX310X_LSR_RXOVR_BIT)
+ flag = TTY_OVERRUN;
+ }
+
+ if (uart_handle_sysrq_char(s->port, ch))
+ continue;
+
+ if (sts & s->port.ignore_status_mask)
+ continue;
+
+ uart_insert_char(&s->port, sts, MAX310X_LSR_RXOVR_BIT,
+ ch, flag);
+ }
+
+ tty_flip_buffer_push(tty);
+
+ tty_kref_put(tty);
+}
+
+static void max310x_handle_tx(struct max310x_port *s)
+{
+ struct circ_buf *xmit = &s->port.state->xmit;
+ unsigned int txlen = 0, to_send;
+
+ if (unlikely(s->port.x_char)) {
+ regmap_write(s->regmap, MAX310X_THR_REG, s->port.x_char);
+ s->port.icount.tx++;
+ s->port.x_char = 0;
+ return;
+ }
+
+ if (uart_circ_empty(xmit) || uart_tx_stopped(&s->port))
+ return;
+
+ /* Get length of data pending in circular buffer */
+ to_send = uart_circ_chars_pending(xmit);
+ if (likely(to_send)) {
+ /* Limit to size of TX FIFO */
+ regmap_read(s->regmap, MAX310X_TXFIFOLVL_REG, &txlen);
+ txlen = MAX310X_FIFO_SIZE - txlen;
+ to_send = (to_send > txlen) ? txlen : to_send;
+
+ dev_dbg(s->port.dev, "TX Len = %u\n", to_send);
+
+ /* Add data to send */
+ s->port.icount.tx += to_send;
+ while (to_send--) {
+ regmap_write(s->regmap, MAX310X_THR_REG,
+ xmit->buf[xmit->tail]);
+ xmit->tail = (xmit->tail + 1) & (UART_XMIT_SIZE - 1);
+ };
+ }
+
+ if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS)
+ uart_write_wakeup(&s->port);
+}
+
+static irqreturn_t max310x_ist(int irq, void *dev_id)
+{
+ struct max310x_port *s = (struct max310x_port *)dev_id;
+ unsigned int ists = 0, lsr = 0, rxlen = 0;
+
+ mutex_lock(&s->max310x_mutex);
+
+ for (;;) {
+ /* Read IRQ status & RX FIFO level */
+ regmap_read(s->regmap, MAX310X_IRQSTS_REG, &ists);
+ regmap_read(s->regmap, MAX310X_LSR_IRQSTS_REG, &lsr);
+ regmap_read(s->regmap, MAX310X_RXFIFOLVL_REG, &rxlen);
+ if (!ists && !(lsr & MAX310X_LSR_RXTO_BIT) && !rxlen)
+ break;
+
+ dev_dbg(s->port.dev, "IRQ status: 0x%02x\n", ists);
+
+ if (rxlen)
+ max310x_handle_rx(s, rxlen);
+ if (ists & MAX310X_IRQ_TX)
+ max310x_handle_tx(s);
+ if (ists & MAX310X_IRQ_CTS_BIT)
+ uart_handle_cts_change(&s->port,
+ !!(lsr & MAX310X_LSR_CTS_BIT));
+ }
+
+ mutex_unlock(&s->max310x_mutex);
+
+ return IRQ_HANDLED;
+}
+
+static void max310x_wq_proc(struct work_struct *ws)
+{
+ struct max310x_port *s = container_of(ws, struct max310x_port, tx_work);
+
+ mutex_lock(&s->max310x_mutex);
+ max310x_handle_tx(s);
+ mutex_unlock(&s->max310x_mutex);
+}
+
+static void max310x_start_tx(struct uart_port *port)
+{
+ struct max310x_port *s = container_of(port, struct max310x_port, port);
+
+ queue_work(s->wq, &s->tx_work);
+}
+
+static void max310x_stop_tx(struct uart_port *port)
+{
+ /* Do nothing */
+}
+
+static void max310x_stop_rx(struct uart_port *port)
+{
+ /* Do nothing */
+}
+
+static unsigned int max310x_tx_empty(struct uart_port *port)
+{
+ unsigned int val = 0;
+ struct max310x_port *s = container_of(port, struct max310x_port, port);
+
+ mutex_lock(&s->max310x_mutex);
+ regmap_read(s->regmap, MAX310X_TXFIFOLVL_REG, &val);
+ mutex_unlock(&s->max310x_mutex);
+
+ return val ? 0 : TIOCSER_TEMT;
+}
+
+static void max310x_enable_ms(struct uart_port *port)
+{
+ /* Modem status not supported */
+}
+
+static unsigned int max310x_get_mctrl(struct uart_port *port)
+{
+ /* DCD and DSR are not wired and CTS/RTS is handled automatically
+ * so just indicate DSR and CAR asserted
+ */
+ return TIOCM_DSR | TIOCM_CAR;
+}
+
+static void max310x_set_mctrl(struct uart_port *port, unsigned int mctrl)
+{
+ /* DCD and DSR are not wired and CTS/RTS is hadnled automatically
+ * so do nothing
+ */
+}
+
+static void max310x_break_ctl(struct uart_port *port, int break_state)
+{
+ struct max310x_port *s = container_of(port, struct max310x_port, port);
+
+ mutex_lock(&s->max310x_mutex);
+ regmap_update_bits(s->regmap, MAX310X_LCR_REG,
+ MAX310X_LCR_TXBREAK_BIT,
+ break_state ? MAX310X_LCR_TXBREAK_BIT : 0);
+ mutex_unlock(&s->max310x_mutex);
+}
+
+static void max310x_set_termios(struct uart_port *port,
+ struct ktermios *termios,
+ struct ktermios *old)
+{
+ struct max310x_port *s = container_of(port, struct max310x_port, port);
+ unsigned int lcr, flow = 0;
+ int baud;
+
+ mutex_lock(&s->max310x_mutex);
+
+ /* Mask termios capabilities we don't support */
+ termios->c_cflag &= ~CMSPAR;
+ termios->c_iflag &= ~IXANY;
+
+ /* Word size */
+ switch (termios->c_cflag & CSIZE) {
+ case CS5:
+ lcr = MAX310X_LCR_WORD_LEN_5;
+ break;
+ case CS6:
+ lcr = MAX310X_LCR_WORD_LEN_6;
+ break;
+ case CS7:
+ lcr = MAX310X_LCR_WORD_LEN_7;
+ break;
+ case CS8:
+ default:
+ lcr = MAX310X_LCR_WORD_LEN_8;
+ break;
+ }
+
+ /* Parity */
+ if (termios->c_cflag & PARENB) {
+ lcr |= MAX310X_LCR_PARITY_BIT;
+ if (!(termios->c_cflag & PARODD))
+ lcr |= MAX310X_LCR_EVENPARITY_BIT;
+ }
+
+ /* Stop bits */
+ if (termios->c_cflag & CSTOPB)
+ lcr |= MAX310X_LCR_STOPLEN_BIT; /* 2 stops */
+
+ /* Update LCR register */
+ regmap_write(s->regmap, MAX310X_LCR_REG, lcr);
+
+ /* Set read status mask */
+ port->read_status_mask = MAX310X_LSR_RXOVR_BIT;
+ if (termios->c_iflag & INPCK)
+ port->read_status_mask |= MAX310X_LSR_RXPAR_BIT |
+ MAX310X_LSR_FRERR_BIT;
+ if (termios->c_iflag & (BRKINT | PARMRK))
+ port->read_status_mask |= MAX310X_LSR_RXBRK_BIT;
+
+ /* Set status ignore mask */
+ port->ignore_status_mask = 0;
+ if (termios->c_iflag & IGNBRK)
+ port->ignore_status_mask |= MAX310X_LSR_RXBRK_BIT;
+ if (!(termios->c_cflag & CREAD))
+ port->ignore_status_mask |= MAX310X_LSR_RXPAR_BIT |
+ MAX310X_LSR_RXOVR_BIT |
+ MAX310X_LSR_FRERR_BIT |
+ MAX310X_LSR_RXBRK_BIT;
+
+ /* Configure flow control */
+ regmap_write(s->regmap, MAX310X_XON1_REG, termios->c_cc[VSTART]);
+ regmap_write(s->regmap, MAX310X_XOFF1_REG, termios->c_cc[VSTOP]);
+ if (termios->c_cflag & CRTSCTS)
+ flow |= MAX310X_FLOWCTRL_AUTOCTS_BIT |
+ MAX310X_FLOWCTRL_AUTORTS_BIT;
+ if (termios->c_iflag & IXON)
+ flow |= MAX310X_FLOWCTRL_SWFLOW3_BIT |
+ MAX310X_FLOWCTRL_SWFLOWEN_BIT;
+ if (termios->c_iflag & IXOFF)
+ flow |= MAX310X_FLOWCTRL_SWFLOW1_BIT |
+ MAX310X_FLOWCTRL_SWFLOWEN_BIT;
+ regmap_write(s->regmap, MAX310X_FLOWCTRL_REG, flow);
+
+ /* Get baud rate generator configuration */
+ baud = uart_get_baud_rate(port, termios, old,
+ port->uartclk / 16 / 0xffff,
+ port->uartclk / 4);
+
+ /* Setup baudrate generator */
+ max310x_set_baud(s, baud);
+
+ /* Update timeout according to new baud rate */
+ uart_update_timeout(port, termios->c_cflag, baud);
+
+ mutex_unlock(&s->max310x_mutex);
+}
+
+static int max310x_startup(struct uart_port *port)
+{
+ unsigned int val, line = port->line;
+ struct max310x_port *s = container_of(port, struct max310x_port, port);
+
+ if (s->pdata->suspend)
+ s->pdata->suspend(0);
+
+ mutex_lock(&s->max310x_mutex);
+
+ /* Configure baud rate, 9600 as default */
+ max310x_set_baud(s, 9600);
+
+ /* Configure LCR register, 8N1 mode by default */
+ val = MAX310X_LCR_WORD_LEN_8;
+ regmap_write(s->regmap, MAX310X_LCR_REG, val);
+
+ /* Configure MODE1 register */
+ regmap_update_bits(s->regmap, MAX310X_MODE1_REG,
+ MAX310X_MODE1_TRNSCVCTRL_BIT,
+ (s->pdata->uart_flags[line] & MAX310X_AUTO_DIR_CTRL)
+ ? MAX310X_MODE1_TRNSCVCTRL_BIT : 0);
+
+ /* Configure MODE2 register */
+ val = MAX310X_MODE2_RXEMPTINV_BIT;
+ if (s->pdata->uart_flags[line] & MAX310X_LOOPBACK)
+ val |= MAX310X_MODE2_LOOPBACK_BIT;
+ if (s->pdata->uart_flags[line] & MAX310X_ECHO_SUPRESS)
+ val |= MAX310X_MODE2_ECHOSUPR_BIT;
+
+ /* Reset FIFOs */
+ val |= MAX310X_MODE2_FIFORST_BIT;
+ regmap_write(s->regmap, MAX310X_MODE2_REG, val);
+
+ /* Configure FIFO trigger level register */
+ /* RX FIFO trigger for 16 words, TX FIFO trigger for 64 words */
+ val = MAX310X_FIFOTRIGLVL_RX(16) | MAX310X_FIFOTRIGLVL_TX(64);
+ regmap_write(s->regmap, MAX310X_FIFOTRIGLVL_REG, val);
+
+ /* Configure flow control levels */
+ /* Flow control halt level 96, resume level 48 */
+ val = MAX310X_FLOWLVL_RES(48) | MAX310X_FLOWLVL_HALT(96);
+ regmap_write(s->regmap, MAX310X_FLOWLVL_REG, val);
+
+ /* Clear timeout register */
+ regmap_write(s->regmap, MAX310X_RXTO_REG, 0);
+
+ /* Configure LSR interrupt enable register */
+ /* Enable RX timeout interrupt */
+ val = MAX310X_LSR_RXTO_BIT;
+ regmap_write(s->regmap, MAX310X_LSR_IRQEN_REG, val);
+
+ /* Clear FIFO reset */
+ regmap_update_bits(s->regmap, MAX310X_MODE2_REG,
+ MAX310X_MODE2_FIFORST_BIT, 0);
+
+ /* Clear IRQ status register by reading it */
+ regmap_read(s->regmap, MAX310X_IRQSTS_REG, &val);
+
+ /* Configure interrupt enable register */
+ /* Enable CTS change interrupt */
+ val = MAX310X_IRQ_CTS_BIT;
+ /* Enable RX, TX interrupts */
+ val |= MAX310X_IRQ_RX | MAX310X_IRQ_TX;
+ regmap_write(s->regmap, MAX310X_IRQEN_REG, val);
+
+ mutex_unlock(&s->max310x_mutex);
+
+ return 0;
+}
+
+static void max310x_shutdown(struct uart_port *port)
+{
+ struct max310x_port *s = container_of(port, struct max310x_port, port);
+
+ /* Disable all interrupts */
+ mutex_lock(&s->max310x_mutex);
+ regmap_write(s->regmap, MAX310X_IRQEN_REG, 0);
+ mutex_unlock(&s->max310x_mutex);
+
+ if (s->pdata->suspend)
+ s->pdata->suspend(1);
+}
+
+static const char *max310x_type(struct uart_port *port)
+{
+ struct max310x_port *s = container_of(port, struct max310x_port, port);
+
+ return (port->type == PORT_MAX310X) ? s->name : NULL;
+}
+
+static int max310x_request_port(struct uart_port *port)
+{
+ /* Do nothing */
+ return 0;
+}
+
+static void max310x_release_port(struct uart_port *port)
+{
+ /* Do nothing */
+}
+
+static void max310x_config_port(struct uart_port *port, int flags)
+{
+ if (flags & UART_CONFIG_TYPE)
+ port->type = PORT_MAX310X;
+}
+
+static int max310x_verify_port(struct uart_port *port, struct serial_struct *ser)
+{
+ if ((ser->type == PORT_UNKNOWN) || (ser->type == PORT_MAX310X))
+ return 0;
+ if (ser->irq == port->irq)
+ return 0;
+
+ return -EINVAL;
+}
+
+static struct uart_ops max310x_ops = {
+ .tx_empty = max310x_tx_empty,
+ .set_mctrl = max310x_set_mctrl,
+ .get_mctrl = max310x_get_mctrl,
+ .stop_tx = max310x_stop_tx,
+ .start_tx = max310x_start_tx,
+ .stop_rx = max310x_stop_rx,
+ .enable_ms = max310x_enable_ms,
+ .break_ctl = max310x_break_ctl,
+ .startup = max310x_startup,
+ .shutdown = max310x_shutdown,
+ .set_termios = max310x_set_termios,
+ .type = max310x_type,
+ .request_port = max310x_request_port,
+ .release_port = max310x_release_port,
+ .config_port = max310x_config_port,
+ .verify_port = max310x_verify_port,
+};
+
+static int max310x_suspend(struct spi_device *spi, pm_message_t state)
+{
+ int ret;
+ struct max310x_port *s = dev_get_drvdata(&spi->dev);
+
+ dev_dbg(&spi->dev, "Suspend\n");
+
+ ret = uart_suspend_port(&s->uart, &s->port);
+
+ mutex_lock(&s->max310x_mutex);
+
+ /* Enable sleep mode */
+ regmap_update_bits(s->regmap, MAX310X_MODE1_REG,
+ MAX310X_MODE1_FORCESLEEP_BIT,
+ MAX310X_MODE1_FORCESLEEP_BIT);
+
+ mutex_unlock(&s->max310x_mutex);
+
+ if (s->pdata->suspend)
+ s->pdata->suspend(1);
+
+ return ret;
+}
+
+static int max310x_resume(struct spi_device *spi)
+{
+ struct max310x_port *s = dev_get_drvdata(&spi->dev);
+
+ dev_dbg(&spi->dev, "Resume\n");
+
+ if (s->pdata->suspend)
+ s->pdata->suspend(0);
+
+ mutex_lock(&s->max310x_mutex);
+
+ /* Disable sleep mode */
+ regmap_update_bits(s->regmap, MAX310X_MODE1_REG,
+ MAX310X_MODE1_FORCESLEEP_BIT,
+ 0);
+
+ max310x_wait_pll(s);
+
+ mutex_unlock(&s->max310x_mutex);
+
+ return uart_resume_port(&s->uart, &s->port);
+}
+
+#ifdef CONFIG_GPIOLIB
+static int max310x_gpio_get(struct gpio_chip *chip, unsigned offset)
+{
+ unsigned int val = 0;
+ struct max310x_port *s = container_of(chip, struct max310x_port, gpio);
+
+ mutex_lock(&s->max310x_mutex);
+ regmap_read(s->regmap, MAX310X_GPIODATA_REG, &val);
+ mutex_unlock(&s->max310x_mutex);
+
+ return !!((val >> 4) & (1 << offset));
+}
+
+static void max310x_gpio_set(struct gpio_chip *chip, unsigned offset, int value)
+{
+ struct max310x_port *s = container_of(chip, struct max310x_port, gpio);
+
+ mutex_lock(&s->max310x_mutex);
+ regmap_update_bits(s->regmap, MAX310X_GPIODATA_REG, 1 << offset, value ?
+ 1 << offset : 0);
+ mutex_unlock(&s->max310x_mutex);
+}
+
+static int max310x_gpio_direction_input(struct gpio_chip *chip, unsigned offset)
+{
+ struct max310x_port *s = container_of(chip, struct max310x_port, gpio);
+
+ mutex_lock(&s->max310x_mutex);
+
+ regmap_update_bits(s->regmap, MAX310X_GPIOCFG_REG, 1 << offset, 0);
+
+ mutex_unlock(&s->max310x_mutex);
+
+ return 0;
+}
+
+static int max310x_gpio_direction_output(struct gpio_chip *chip,
+ unsigned offset, int value)
+{
+ struct max310x_port *s = container_of(chip, struct max310x_port, gpio);
+
+ mutex_lock(&s->max310x_mutex);
+
+ regmap_update_bits(s->regmap, MAX310X_GPIOCFG_REG, 1 << offset,
+ 1 << offset);
+ regmap_update_bits(s->regmap, MAX310X_GPIODATA_REG, 1 << offset, value ?
+ 1 << offset : 0);
+
+ mutex_unlock(&s->max310x_mutex);
+
+ return 0;
+}
+#endif
+
+/* Generic platform data */
+static struct max310x_pdata generic_plat_data = {
+ .driver_flags = MAX310X_EXT_CLK,
+ .uart_flags[0] = MAX310X_ECHO_SUPRESS,
+ .frequency = 26000000,
+};
+
+static int __devinit max310x_probe(struct spi_device *spi)
+{
+ struct max310x_port *s;
+ struct device *dev = &spi->dev;
+ int chiptype = spi_get_device_id(spi)->driver_data;
+ struct max310x_pdata *pdata = dev->platform_data;
+ unsigned int val = 0;
+ int ret;
+
+ /* Check for IRQ */
+ if (spi->irq <= 0) {
+ dev_err(dev, "No IRQ specified\n");
+ return -ENOTSUPP;
+ }
+
+ /* Alloc port structure */
+ s = devm_kzalloc(dev, sizeof(struct max310x_port), GFP_KERNEL);
+ if (!s) {
+ dev_err(dev, "Error allocating port structure\n");
+ return -ENOMEM;
+ }
+ dev_set_drvdata(dev, s);
+
+ if (!pdata) {
+ dev_warn(dev, "No platform data supplied, using defaults\n");
+ pdata = &generic_plat_data;
+ }
+ s->pdata = pdata;
+
+ /* Individual chip settings */
+ switch (chiptype) {
+ case MAX310X_TYPE_MAX3107:
+ s->name = "MAX3107";
+ s->nr_gpio = 4;
+ s->uart.nr = 1;
+ s->regcfg.max_register = 0x1f;
+ break;
+ case MAX310X_TYPE_MAX3108:
+ s->name = "MAX3108";
+ s->nr_gpio = 4;
+ s->uart.nr = 1;
+ s->regcfg.max_register = 0x1e;
+ break;
+ default:
+ dev_err(dev, "Unsupported chip type %i\n", chiptype);
+ return -ENOTSUPP;
+ }
+
+ /* Check input frequency */
+ if ((pdata->driver_flags & MAX310X_EXT_CLK) &&
+ ((pdata->frequency < 500000) || (pdata->frequency > 35000000)))
+ goto err_freq;
+ /* Check frequency for quartz */
+ if (!(pdata->driver_flags & MAX310X_EXT_CLK) &&
+ ((pdata->frequency < 1000000) || (pdata->frequency > 4000000)))
+ goto err_freq;
+
+ mutex_init(&s->max310x_mutex);
+
+ /* Setup SPI bus */
+ spi->mode = SPI_MODE_0;
+ spi->bits_per_word = 8;
+ spi->max_speed_hz = 26000000;
+ spi_setup(spi);
+
+ /* Setup regmap */
+ s->regcfg.reg_bits = 8;
+ s->regcfg.val_bits = 8;
+ s->regcfg.read_flag_mask = 0x00;
+ s->regcfg.write_flag_mask = 0x80;
+ s->regcfg.cache_type = REGCACHE_RBTREE;
+ s->regcfg.writeable_reg = max3107_8_reg_writeable;
+ s->regcfg.volatile_reg = max310x_reg_volatile;
+ s->regcfg.precious_reg = max310x_reg_precious;
+ s->regmap = devm_regmap_init_spi(spi, &s->regcfg);
+ if (IS_ERR(s->regmap)) {
+ ret = PTR_ERR(s->regmap);
+ dev_err(dev, "Failed to initialize register map\n");
+ goto err_out;
+ }
+
+ /* Reset chip & check SPI function */
+ ret = regmap_write(s->regmap, MAX310X_MODE2_REG, MAX310X_MODE2_RST_BIT);
+ if (ret) {
+ dev_err(dev, "SPI transfer failed\n");
+ goto err_out;
+ }
+ /* Clear chip reset */
+ regmap_write(s->regmap, MAX310X_MODE2_REG, 0);
+
+ switch (chiptype) {
+ case MAX310X_TYPE_MAX3107:
+ /* Check REV ID to ensure we are talking to what we expect */
+ regmap_read(s->regmap, MAX3107_REVID_REG, &val);
+ if (((val & MAX3107_REV_MASK) != MAX3107_REV_ID)) {
+ dev_err(dev, "%s ID 0x%02x does not match\n",
+ s->name, val);
+ ret = -ENODEV;
+ goto err_out;
+ }
+ break;
+ case MAX310X_TYPE_MAX3108:
+ /* MAX3108 have not REV ID register, we just check default value
+ * from clocksource register to make sure everything works.
+ */
+ regmap_read(s->regmap, MAX310X_CLKSRC_REG, &val);
+ if (val != (MAX310X_CLKSRC_EXTCLK_BIT |
+ MAX310X_CLKSRC_PLLBYP_BIT)) {
+ dev_err(dev, "%s not present\n", s->name);
+ ret = -ENODEV;
+ goto err_out;
+ }
+ break;
+ }
+
+ /* Board specific configure */
+ if (pdata->init)
+ pdata->init();
+ if (pdata->suspend)
+ pdata->suspend(0);
+
+ /* Calculate referecne clock */
+ s->uartclk = max310x_set_ref_clk(s);
+
+ /* Disable all interrupts */
+ regmap_write(s->regmap, MAX310X_IRQEN_REG, 0);
+
+ /* Setup MODE1 register */
+ val = MAX310X_MODE1_IRQSEL_BIT; /* Enable IRQ pin */
+ if (pdata->driver_flags & MAX310X_AUTOSLEEP)
+ val = MAX310X_MODE1_AUTOSLEEP_BIT;
+ regmap_write(s->regmap, MAX310X_MODE1_REG, val);
+
+ /* Setup interrupt */
+ ret = devm_request_threaded_irq(dev, spi->irq, NULL, max310x_ist,
+ IRQF_TRIGGER_FALLING | IRQF_ONESHOT,
+ dev_name(dev), s);
+ if (ret) {
+ dev_err(dev, "Unable to reguest IRQ %i\n", spi->irq);
+ goto err_out;
+ }
+
+ /* Register UART driver */
+ s->uart.owner = THIS_MODULE;
+ s->uart.driver_name = dev_name(dev);
+ s->uart.dev_name = "ttyMAX";
+ s->uart.major = MAX310X_MAJOR;
+ s->uart.minor = MAX310X_MINOR;
+ ret = uart_register_driver(&s->uart);
+ if (ret) {
+ dev_err(dev, "Registering UART driver failed\n");
+ goto err_out;
+ }
+
+ /* Initialize workqueue for start TX */
+ s->wq = create_freezable_workqueue(dev_name(dev));
+ INIT_WORK(&s->tx_work, max310x_wq_proc);
+
+ /* Initialize UART port data */
+ s->port.line = 0;
+ s->port.dev = dev;
+ s->port.irq = spi->irq;
+ s->port.type = PORT_MAX310X;
+ s->port.fifosize = MAX310X_FIFO_SIZE;
+ s->port.flags = UPF_SKIP_TEST | UPF_FIXED_TYPE;
+ s->port.iotype = UPIO_PORT;
+ s->port.membase = (void __iomem *)0xffffffff; /* Bogus value */
+ s->port.uartclk = s->uartclk;
+ s->port.ops = &max310x_ops;
+ uart_add_one_port(&s->uart, &s->port);
+
+#ifdef CONFIG_GPIOLIB
+ /* Setup GPIO cotroller */
+ if (pdata->gpio_base) {
+ s->gpio.owner = THIS_MODULE;
+ s->gpio.dev = dev;
+ s->gpio.label = dev_name(dev);
+ s->gpio.direction_input = max310x_gpio_direction_input;
+ s->gpio.get = max310x_gpio_get;
+ s->gpio.direction_output= max310x_gpio_direction_output;
+ s->gpio.set = max310x_gpio_set;
+ s->gpio.base = pdata->gpio_base;
+ s->gpio.ngpio = s->nr_gpio;
+ if (gpiochip_add(&s->gpio)) {
+ /* Indicate that we should not call gpiochip_remove */
+ s->gpio.base = 0;
+ }
+ } else
+ dev_info(dev, "GPIO support not enabled\n");
+#endif
+
+ /* Go to suspend mode */
+ if (pdata->suspend)
+ pdata->suspend(1);
+
+ return 0;
+
+err_freq:
+ dev_err(dev, "Frequency parameter incorrect\n");
+ ret = -EINVAL;
+
+err_out:
+ dev_set_drvdata(dev, NULL);
+
+ return ret;
+}
+
+static int __devexit max310x_remove(struct spi_device *spi)
+{
+ struct device *dev = &spi->dev;
+ struct max310x_port *s = dev_get_drvdata(dev);
+ int ret = 0;
+
+ dev_dbg(dev, "Removing port\n");
+
+ devm_free_irq(dev, s->port.irq, s);
+
+ destroy_workqueue(s->wq);
+
+ uart_remove_one_port(&s->uart, &s->port);
+
+ uart_unregister_driver(&s->uart);
+
+#ifdef CONFIG_GPIOLIB
+ if (s->pdata->gpio_base) {
+ ret = gpiochip_remove(&s->gpio);
+ if (ret)
+ dev_err(dev, "Failed to remove gpio chip: %d\n", ret);
+ }
+#endif
+
+ dev_set_drvdata(dev, NULL);
+
+ if (s->pdata->suspend)
+ s->pdata->suspend(1);
+ if (s->pdata->exit)
+ s->pdata->exit();
+
+ return ret;
+}
+
+static const struct spi_device_id max310x_id_table[] = {
+ { "max3107", MAX310X_TYPE_MAX3107 },
+ { "max3108", MAX310X_TYPE_MAX3108 },
+};
+MODULE_DEVICE_TABLE(spi, max310x_id_table);
+
+static struct spi_driver max310x_driver = {
+ .driver = {
+ .name = "max310x",
+ .owner = THIS_MODULE,
+ },
+ .probe = max310x_probe,
+ .remove = __devexit_p(max310x_remove),
+ .suspend = max310x_suspend,
+ .resume = max310x_resume,
+ .id_table = max310x_id_table,
+};
+module_spi_driver(max310x_driver);
+
+MODULE_LICENSE("GPL v2");
+MODULE_AUTHOR("Alexander Shiyan <shc_work@mail.ru>");
+MODULE_DESCRIPTION("MAX310X serial driver");
diff --git a/drivers/tty/serial/mpc52xx_uart.c b/drivers/tty/serial/mpc52xx_uart.c
index bedac0d4c9c..f19d04ed858 100644
--- a/drivers/tty/serial/mpc52xx_uart.c
+++ b/drivers/tty/serial/mpc52xx_uart.c
@@ -775,11 +775,15 @@ mpc52xx_uart_set_termios(struct uart_port *port, struct ktermios *new,
}
if (new->c_cflag & PARENB) {
+ if (new->c_cflag & CMSPAR)
+ mr1 |= MPC52xx_PSC_MODE_PARFORCE;
+
+ /* With CMSPAR, PARODD also means high parity (same as termios) */
mr1 |= (new->c_cflag & PARODD) ?
MPC52xx_PSC_MODE_PARODD : MPC52xx_PSC_MODE_PAREVEN;
- } else
+ } else {
mr1 |= MPC52xx_PSC_MODE_PARNONE;
-
+ }
mr2 = 0;
diff --git a/drivers/tty/serial/msm_serial.c b/drivers/tty/serial/msm_serial.c
index 8131e2c2801..033e0bc9eba 100644
--- a/drivers/tty/serial/msm_serial.c
+++ b/drivers/tty/serial/msm_serial.c
@@ -896,7 +896,7 @@ static int __init msm_serial_probe(struct platform_device *pdev)
return PTR_ERR(msm_port->clk);
if (msm_port->is_uartdm)
- clk_set_rate(msm_port->clk, 7372800);
+ clk_set_rate(msm_port->clk, 1843200);
port->uartclk = clk_get_rate(msm_port->clk);
printk(KERN_INFO "uartclk = %d\n", port->uartclk);
diff --git a/drivers/tty/serial/msm_smd_tty.c b/drivers/tty/serial/msm_smd_tty.c
index b25e6ee7144..925d1fa153d 100644
--- a/drivers/tty/serial/msm_smd_tty.c
+++ b/drivers/tty/serial/msm_smd_tty.c
@@ -223,9 +223,11 @@ static int __init smd_tty_init(void)
return ret;
for (i = 0; i < smd_tty_channels_len; i++) {
- tty_port_init(&smd_tty[smd_tty_channels[i].id].port);
- smd_tty[smd_tty_channels[i].id].port.ops = &smd_tty_port_ops;
- tty_register_device(smd_tty_driver, smd_tty_channels[i].id, 0);
+ struct tty_port *port = &smd_tty[smd_tty_channels[i].id].port;
+ tty_port_init(port);
+ port->ops = &smd_tty_port_ops;
+ tty_port_register_device(port, smd_tty_driver,
+ smd_tty_channels[i].id, NULL);
}
return 0;
diff --git a/drivers/tty/serial/mxs-auart.c b/drivers/tty/serial/mxs-auart.c
index 3a667eed63d..68984136bfb 100644
--- a/drivers/tty/serial/mxs-auart.c
+++ b/drivers/tty/serial/mxs-auart.c
@@ -262,7 +262,7 @@ static void mxs_auart_set_mctrl(struct uart_port *u, unsigned mctrl)
ctrl &= ~AUART_CTRL2_RTSEN;
if (mctrl & TIOCM_RTS) {
- if (u->state->port.flags & ASYNC_CTS_FLOW)
+ if (tty_port_cts_enabled(&u->state->port))
ctrl |= AUART_CTRL2_RTSEN;
}
@@ -457,11 +457,11 @@ static void mxs_auart_shutdown(struct uart_port *u)
writel(AUART_CTRL2_UARTEN, u->membase + AUART_CTRL2_CLR);
- writel(AUART_CTRL0_CLKGATE, u->membase + AUART_CTRL0_SET);
-
writel(AUART_INTR_RXIEN | AUART_INTR_RTIEN | AUART_INTR_CTSMIEN,
u->membase + AUART_INTR_CLR);
+ writel(AUART_CTRL0_CLKGATE, u->membase + AUART_CTRL0_SET);
+
clk_disable_unprepare(s->clk);
}
@@ -796,6 +796,7 @@ static int __devexit mxs_auart_remove(struct platform_device *pdev)
auart_port[pdev->id] = NULL;
+ put_device(s->dev);
clk_put(s->clk);
free_irq(s->irq, s);
kfree(s);
diff --git a/drivers/tty/serial/of_serial.c b/drivers/tty/serial/of_serial.c
index 34e71874a89..df443b908ca 100644
--- a/drivers/tty/serial/of_serial.c
+++ b/drivers/tty/serial/of_serial.c
@@ -105,6 +105,10 @@ static int __devinit of_platform_serial_setup(struct platform_device *ofdev,
port->uartclk = clk;
port->flags = UPF_SHARE_IRQ | UPF_BOOT_AUTOCONF | UPF_IOREMAP
| UPF_FIXED_PORT | UPF_FIXED_TYPE;
+
+ if (of_find_property(np, "no-loopback-test", NULL))
+ port->flags |= UPF_SKIP_TEST;
+
port->dev = &ofdev->dev;
if (type == PORT_TEGRA)
@@ -144,8 +148,15 @@ static int __devinit of_platform_serial_probe(struct platform_device *ofdev)
switch (port_type) {
#ifdef CONFIG_SERIAL_8250
case PORT_8250 ... PORT_MAX_8250:
- ret = serial8250_register_port(&port);
+ {
+ /* For now the of bindings don't support the extra
+ 8250 specific bits */
+ struct uart_8250_port port8250;
+ memset(&port8250, 0, sizeof(port8250));
+ port8250.port = port;
+ ret = serial8250_register_8250_port(&port8250);
break;
+ }
#endif
#ifdef CONFIG_SERIAL_OF_PLATFORM_NWPSERIAL
case PORT_NWPSERIAL:
diff --git a/drivers/tty/serial/omap-serial.c b/drivers/tty/serial/omap-serial.c
index d3cda0cb2df..f175385bb30 100644
--- a/drivers/tty/serial/omap-serial.c
+++ b/drivers/tty/serial/omap-serial.c
@@ -32,16 +32,16 @@
#include <linux/slab.h>
#include <linux/tty.h>
#include <linux/tty_flip.h>
+#include <linux/platform_device.h>
#include <linux/io.h>
-#include <linux/dma-mapping.h>
#include <linux/clk.h>
#include <linux/serial_core.h>
#include <linux/irq.h>
#include <linux/pm_runtime.h>
#include <linux/of.h>
+#include <linux/gpio.h>
+#include <linux/pinctrl/consumer.h>
-#include <plat/dma.h>
-#include <plat/dmtimer.h>
#include <plat/omap-serial.h>
#define UART_BUILD_REVISION(x, y) (((x) << 8) | (y))
@@ -57,8 +57,8 @@
#define OMAP_UART_SCR_RX_TRIG_GRANU1_MASK (1 << 7)
/* FCR register bitmasks */
-#define OMAP_UART_FCR_RX_FIFO_TRIG_SHIFT 6
#define OMAP_UART_FCR_RX_FIFO_TRIG_MASK (0x3 << 6)
+#define OMAP_UART_FCR_TX_FIFO_TRIG_MASK (0x3 << 4)
/* MVR register bitmasks */
#define OMAP_UART_MVR_SCHEME_SHIFT 30
@@ -71,12 +71,52 @@
#define OMAP_UART_MVR_MAJ_SHIFT 8
#define OMAP_UART_MVR_MIN_MASK 0x3f
+struct uart_omap_port {
+ struct uart_port port;
+ struct uart_omap_dma uart_dma;
+ struct device *dev;
+
+ unsigned char ier;
+ unsigned char lcr;
+ unsigned char mcr;
+ unsigned char fcr;
+ unsigned char efr;
+ unsigned char dll;
+ unsigned char dlh;
+ unsigned char mdr1;
+ unsigned char scr;
+
+ int use_dma;
+ /*
+ * Some bits in registers are cleared on a read, so they must
+ * be saved whenever the register is read but the bits will not
+ * be immediately processed.
+ */
+ unsigned int lsr_break_flag;
+ unsigned char msr_saved_flags;
+ char name[20];
+ unsigned long port_activity;
+ u32 context_loss_cnt;
+ u32 errata;
+ u8 wakeups_enabled;
+ unsigned int irq_pending:1;
+
+ int DTR_gpio;
+ int DTR_inverted;
+ int DTR_active;
+
+ struct pm_qos_request pm_qos_request;
+ u32 latency;
+ u32 calc_latency;
+ struct work_struct qos_work;
+ struct pinctrl *pins;
+};
+
+#define to_uart_omap_port(p) ((container_of((p), struct uart_omap_port, port)))
+
static struct uart_omap_port *ui[OMAP_MAX_HSUART_PORTS];
/* Forward declaration of functions */
-static void uart_tx_dma_callback(int lch, u16 ch_status, void *data);
-static void serial_omap_rxdma_poll(unsigned long uart_no);
-static int serial_omap_start_rxdma(struct uart_omap_port *up);
static void serial_omap_mdr1_errataset(struct uart_omap_port *up, u8 mdr1);
static struct workqueue_struct *serial_omap_uart_wq;
@@ -101,6 +141,46 @@ static inline void serial_omap_clear_fifos(struct uart_omap_port *up)
serial_out(up, UART_FCR, 0);
}
+static int serial_omap_get_context_loss_count(struct uart_omap_port *up)
+{
+ struct omap_uart_port_info *pdata = up->dev->platform_data;
+
+ if (!pdata || !pdata->get_context_loss_count)
+ return 0;
+
+ return pdata->get_context_loss_count(up->dev);
+}
+
+static void serial_omap_set_forceidle(struct uart_omap_port *up)
+{
+ struct omap_uart_port_info *pdata = up->dev->platform_data;
+
+ if (!pdata || !pdata->set_forceidle)
+ return;
+
+ pdata->set_forceidle(up->dev);
+}
+
+static void serial_omap_set_noidle(struct uart_omap_port *up)
+{
+ struct omap_uart_port_info *pdata = up->dev->platform_data;
+
+ if (!pdata || !pdata->set_noidle)
+ return;
+
+ pdata->set_noidle(up->dev);
+}
+
+static void serial_omap_enable_wakeup(struct uart_omap_port *up, bool enable)
+{
+ struct omap_uart_port_info *pdata = up->dev->platform_data;
+
+ if (!pdata || !pdata->enable_wakeup)
+ return;
+
+ pdata->enable_wakeup(up->dev, enable);
+}
+
/*
* serial_omap_get_divisor - calculate divisor value
* @port: uart port info
@@ -126,151 +206,55 @@ serial_omap_get_divisor(struct uart_port *port, unsigned int baud)
return port->uartclk/(baud * divisor);
}
-static void serial_omap_stop_rxdma(struct uart_omap_port *up)
-{
- if (up->uart_dma.rx_dma_used) {
- del_timer(&up->uart_dma.rx_timer);
- omap_stop_dma(up->uart_dma.rx_dma_channel);
- omap_free_dma(up->uart_dma.rx_dma_channel);
- up->uart_dma.rx_dma_channel = OMAP_UART_DMA_CH_FREE;
- up->uart_dma.rx_dma_used = false;
- pm_runtime_mark_last_busy(&up->pdev->dev);
- pm_runtime_put_autosuspend(&up->pdev->dev);
- }
-}
-
static void serial_omap_enable_ms(struct uart_port *port)
{
- struct uart_omap_port *up = (struct uart_omap_port *)port;
+ struct uart_omap_port *up = to_uart_omap_port(port);
dev_dbg(up->port.dev, "serial_omap_enable_ms+%d\n", up->port.line);
- pm_runtime_get_sync(&up->pdev->dev);
+ pm_runtime_get_sync(up->dev);
up->ier |= UART_IER_MSI;
serial_out(up, UART_IER, up->ier);
- pm_runtime_put(&up->pdev->dev);
+ pm_runtime_mark_last_busy(up->dev);
+ pm_runtime_put_autosuspend(up->dev);
}
static void serial_omap_stop_tx(struct uart_port *port)
{
- struct uart_omap_port *up = (struct uart_omap_port *)port;
- struct omap_uart_port_info *pdata = up->pdev->dev.platform_data;
+ struct uart_omap_port *up = to_uart_omap_port(port);
- if (up->use_dma &&
- up->uart_dma.tx_dma_channel != OMAP_UART_DMA_CH_FREE) {
- /*
- * Check if dma is still active. If yes do nothing,
- * return. Else stop dma
- */
- if (omap_get_dma_active_status(up->uart_dma.tx_dma_channel))
- return;
- omap_stop_dma(up->uart_dma.tx_dma_channel);
- omap_free_dma(up->uart_dma.tx_dma_channel);
- up->uart_dma.tx_dma_channel = OMAP_UART_DMA_CH_FREE;
- pm_runtime_mark_last_busy(&up->pdev->dev);
- pm_runtime_put_autosuspend(&up->pdev->dev);
- }
-
- pm_runtime_get_sync(&up->pdev->dev);
+ pm_runtime_get_sync(up->dev);
if (up->ier & UART_IER_THRI) {
up->ier &= ~UART_IER_THRI;
serial_out(up, UART_IER, up->ier);
}
- if (!up->use_dma && pdata && pdata->set_forceidle)
- pdata->set_forceidle(up->pdev);
+ serial_omap_set_forceidle(up);
- pm_runtime_mark_last_busy(&up->pdev->dev);
- pm_runtime_put_autosuspend(&up->pdev->dev);
+ pm_runtime_mark_last_busy(up->dev);
+ pm_runtime_put_autosuspend(up->dev);
}
static void serial_omap_stop_rx(struct uart_port *port)
{
- struct uart_omap_port *up = (struct uart_omap_port *)port;
+ struct uart_omap_port *up = to_uart_omap_port(port);
- pm_runtime_get_sync(&up->pdev->dev);
- if (up->use_dma)
- serial_omap_stop_rxdma(up);
+ pm_runtime_get_sync(up->dev);
up->ier &= ~UART_IER_RLSI;
up->port.read_status_mask &= ~UART_LSR_DR;
serial_out(up, UART_IER, up->ier);
- pm_runtime_mark_last_busy(&up->pdev->dev);
- pm_runtime_put_autosuspend(&up->pdev->dev);
-}
-
-static inline void receive_chars(struct uart_omap_port *up,
- unsigned int *status)
-{
- struct tty_struct *tty = up->port.state->port.tty;
- unsigned int flag, lsr = *status;
- unsigned char ch = 0;
- int max_count = 256;
-
- do {
- if (likely(lsr & UART_LSR_DR))
- ch = serial_in(up, UART_RX);
- flag = TTY_NORMAL;
- up->port.icount.rx++;
-
- if (unlikely(lsr & UART_LSR_BRK_ERROR_BITS)) {
- /*
- * For statistics only
- */
- if (lsr & UART_LSR_BI) {
- lsr &= ~(UART_LSR_FE | UART_LSR_PE);
- up->port.icount.brk++;
- /*
- * We do the SysRQ and SAK checking
- * here because otherwise the break
- * may get masked by ignore_status_mask
- * or read_status_mask.
- */
- if (uart_handle_break(&up->port))
- goto ignore_char;
- } else if (lsr & UART_LSR_PE) {
- up->port.icount.parity++;
- } else if (lsr & UART_LSR_FE) {
- up->port.icount.frame++;
- }
-
- if (lsr & UART_LSR_OE)
- up->port.icount.overrun++;
-
- /*
- * Mask off conditions which should be ignored.
- */
- lsr &= up->port.read_status_mask;
-
-#ifdef CONFIG_SERIAL_OMAP_CONSOLE
- if (up->port.line == up->port.cons->index) {
- /* Recover the break flag from console xmit */
- lsr |= up->lsr_break_flag;
- }
-#endif
- if (lsr & UART_LSR_BI)
- flag = TTY_BREAK;
- else if (lsr & UART_LSR_PE)
- flag = TTY_PARITY;
- else if (lsr & UART_LSR_FE)
- flag = TTY_FRAME;
- }
-
- if (uart_handle_sysrq_char(&up->port, ch))
- goto ignore_char;
- uart_insert_char(&up->port, lsr, UART_LSR_OE, ch, flag);
-ignore_char:
- lsr = serial_in(up, UART_LSR);
- } while ((lsr & (UART_LSR_DR | UART_LSR_BI)) && (max_count-- > 0));
- spin_unlock(&up->port.lock);
- tty_flip_buffer_push(tty);
- spin_lock(&up->port.lock);
+ pm_runtime_mark_last_busy(up->dev);
+ pm_runtime_put_autosuspend(up->dev);
}
-static void transmit_chars(struct uart_omap_port *up)
+static void transmit_chars(struct uart_omap_port *up, unsigned int lsr)
{
struct circ_buf *xmit = &up->port.state->xmit;
int count;
+ if (!(lsr & UART_LSR_THRE))
+ return;
+
if (up->port.x_char) {
serial_out(up, UART_TX, up->port.x_char);
up->port.icount.tx++;
@@ -290,8 +274,11 @@ static void transmit_chars(struct uart_omap_port *up)
break;
} while (--count > 0);
- if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS)
+ if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS) {
+ spin_unlock(&up->port.lock);
uart_write_wakeup(&up->port);
+ spin_lock(&up->port.lock);
+ }
if (uart_circ_empty(xmit))
serial_omap_stop_tx(&up->port);
@@ -307,70 +294,13 @@ static inline void serial_omap_enable_ier_thri(struct uart_omap_port *up)
static void serial_omap_start_tx(struct uart_port *port)
{
- struct uart_omap_port *up = (struct uart_omap_port *)port;
- struct omap_uart_port_info *pdata = up->pdev->dev.platform_data;
- struct circ_buf *xmit;
- unsigned int start;
- int ret = 0;
-
- if (!up->use_dma) {
- pm_runtime_get_sync(&up->pdev->dev);
- serial_omap_enable_ier_thri(up);
- if (pdata && pdata->set_noidle)
- pdata->set_noidle(up->pdev);
- pm_runtime_mark_last_busy(&up->pdev->dev);
- pm_runtime_put_autosuspend(&up->pdev->dev);
- return;
- }
-
- if (up->uart_dma.tx_dma_used)
- return;
-
- xmit = &up->port.state->xmit;
-
- if (up->uart_dma.tx_dma_channel == OMAP_UART_DMA_CH_FREE) {
- pm_runtime_get_sync(&up->pdev->dev);
- ret = omap_request_dma(up->uart_dma.uart_dma_tx,
- "UART Tx DMA",
- (void *)uart_tx_dma_callback, up,
- &(up->uart_dma.tx_dma_channel));
+ struct uart_omap_port *up = to_uart_omap_port(port);
- if (ret < 0) {
- serial_omap_enable_ier_thri(up);
- return;
- }
- }
- spin_lock(&(up->uart_dma.tx_lock));
- up->uart_dma.tx_dma_used = true;
- spin_unlock(&(up->uart_dma.tx_lock));
-
- start = up->uart_dma.tx_buf_dma_phys +
- (xmit->tail & (UART_XMIT_SIZE - 1));
-
- up->uart_dma.tx_buf_size = uart_circ_chars_pending(xmit);
- /*
- * It is a circular buffer. See if the buffer has wounded back.
- * If yes it will have to be transferred in two separate dma
- * transfers
- */
- if (start + up->uart_dma.tx_buf_size >=
- up->uart_dma.tx_buf_dma_phys + UART_XMIT_SIZE)
- up->uart_dma.tx_buf_size =
- (up->uart_dma.tx_buf_dma_phys +
- UART_XMIT_SIZE) - start;
-
- omap_set_dma_dest_params(up->uart_dma.tx_dma_channel, 0,
- OMAP_DMA_AMODE_CONSTANT,
- up->uart_dma.uart_base, 0, 0);
- omap_set_dma_src_params(up->uart_dma.tx_dma_channel, 0,
- OMAP_DMA_AMODE_POST_INC, start, 0, 0);
- omap_set_dma_transfer_params(up->uart_dma.tx_dma_channel,
- OMAP_DMA_DATA_TYPE_S8,
- up->uart_dma.tx_buf_size, 1,
- OMAP_DMA_SYNC_ELEMENT,
- up->uart_dma.uart_dma_tx, 0);
- /* FIXME: Cache maintenance needed here? */
- omap_start_dma(up->uart_dma.tx_dma_channel);
+ pm_runtime_get_sync(up->dev);
+ serial_omap_enable_ier_thri(up);
+ serial_omap_set_noidle(up);
+ pm_runtime_mark_last_busy(up->dev);
+ pm_runtime_put_autosuspend(up->dev);
}
static unsigned int check_modem_status(struct uart_omap_port *up)
@@ -401,76 +331,158 @@ static unsigned int check_modem_status(struct uart_omap_port *up)
return status;
}
+static void serial_omap_rlsi(struct uart_omap_port *up, unsigned int lsr)
+{
+ unsigned int flag;
+
+ up->port.icount.rx++;
+ flag = TTY_NORMAL;
+
+ if (lsr & UART_LSR_BI) {
+ flag = TTY_BREAK;
+ lsr &= ~(UART_LSR_FE | UART_LSR_PE);
+ up->port.icount.brk++;
+ /*
+ * We do the SysRQ and SAK checking
+ * here because otherwise the break
+ * may get masked by ignore_status_mask
+ * or read_status_mask.
+ */
+ if (uart_handle_break(&up->port))
+ return;
+
+ }
+
+ if (lsr & UART_LSR_PE) {
+ flag = TTY_PARITY;
+ up->port.icount.parity++;
+ }
+
+ if (lsr & UART_LSR_FE) {
+ flag = TTY_FRAME;
+ up->port.icount.frame++;
+ }
+
+ if (lsr & UART_LSR_OE)
+ up->port.icount.overrun++;
+
+#ifdef CONFIG_SERIAL_OMAP_CONSOLE
+ if (up->port.line == up->port.cons->index) {
+ /* Recover the break flag from console xmit */
+ lsr |= up->lsr_break_flag;
+ }
+#endif
+ uart_insert_char(&up->port, lsr, UART_LSR_OE, 0, flag);
+}
+
+static void serial_omap_rdi(struct uart_omap_port *up, unsigned int lsr)
+{
+ unsigned char ch = 0;
+ unsigned int flag;
+
+ if (!(lsr & UART_LSR_DR))
+ return;
+
+ ch = serial_in(up, UART_RX);
+ flag = TTY_NORMAL;
+ up->port.icount.rx++;
+
+ if (uart_handle_sysrq_char(&up->port, ch))
+ return;
+
+ uart_insert_char(&up->port, lsr, UART_LSR_OE, ch, flag);
+}
+
/**
* serial_omap_irq() - This handles the interrupt from one port
* @irq: uart port irq number
* @dev_id: uart port info
*/
-static inline irqreturn_t serial_omap_irq(int irq, void *dev_id)
+static irqreturn_t serial_omap_irq(int irq, void *dev_id)
{
struct uart_omap_port *up = dev_id;
+ struct tty_struct *tty = up->port.state->port.tty;
unsigned int iir, lsr;
- unsigned long flags;
+ unsigned int type;
+ irqreturn_t ret = IRQ_NONE;
+ int max_count = 256;
- pm_runtime_get_sync(&up->pdev->dev);
- iir = serial_in(up, UART_IIR);
- if (iir & UART_IIR_NO_INT) {
- pm_runtime_mark_last_busy(&up->pdev->dev);
- pm_runtime_put_autosuspend(&up->pdev->dev);
- return IRQ_NONE;
- }
+ spin_lock(&up->port.lock);
+ pm_runtime_get_sync(up->dev);
- spin_lock_irqsave(&up->port.lock, flags);
- lsr = serial_in(up, UART_LSR);
- if (iir & UART_IIR_RLSI) {
- if (!up->use_dma) {
- if (lsr & UART_LSR_DR)
- receive_chars(up, &lsr);
- } else {
- up->ier &= ~(UART_IER_RDI | UART_IER_RLSI);
- serial_out(up, UART_IER, up->ier);
- if ((serial_omap_start_rxdma(up) != 0) &&
- (lsr & UART_LSR_DR))
- receive_chars(up, &lsr);
+ do {
+ iir = serial_in(up, UART_IIR);
+ if (iir & UART_IIR_NO_INT)
+ break;
+
+ ret = IRQ_HANDLED;
+ lsr = serial_in(up, UART_LSR);
+
+ /* extract IRQ type from IIR register */
+ type = iir & 0x3e;
+
+ switch (type) {
+ case UART_IIR_MSI:
+ check_modem_status(up);
+ break;
+ case UART_IIR_THRI:
+ transmit_chars(up, lsr);
+ break;
+ case UART_IIR_RX_TIMEOUT:
+ /* FALLTHROUGH */
+ case UART_IIR_RDI:
+ serial_omap_rdi(up, lsr);
+ break;
+ case UART_IIR_RLSI:
+ serial_omap_rlsi(up, lsr);
+ break;
+ case UART_IIR_CTS_RTS_DSR:
+ /* simply try again */
+ break;
+ case UART_IIR_XOFF:
+ /* FALLTHROUGH */
+ default:
+ break;
}
- }
+ } while (!(iir & UART_IIR_NO_INT) && max_count--);
- check_modem_status(up);
- if ((lsr & UART_LSR_THRE) && (iir & UART_IIR_THRI))
- transmit_chars(up);
+ spin_unlock(&up->port.lock);
- spin_unlock_irqrestore(&up->port.lock, flags);
- pm_runtime_mark_last_busy(&up->pdev->dev);
- pm_runtime_put_autosuspend(&up->pdev->dev);
+ tty_flip_buffer_push(tty);
+ pm_runtime_mark_last_busy(up->dev);
+ pm_runtime_put_autosuspend(up->dev);
up->port_activity = jiffies;
- return IRQ_HANDLED;
+
+ return ret;
}
static unsigned int serial_omap_tx_empty(struct uart_port *port)
{
- struct uart_omap_port *up = (struct uart_omap_port *)port;
+ struct uart_omap_port *up = to_uart_omap_port(port);
unsigned long flags = 0;
unsigned int ret = 0;
- pm_runtime_get_sync(&up->pdev->dev);
+ pm_runtime_get_sync(up->dev);
dev_dbg(up->port.dev, "serial_omap_tx_empty+%d\n", up->port.line);
spin_lock_irqsave(&up->port.lock, flags);
ret = serial_in(up, UART_LSR) & UART_LSR_TEMT ? TIOCSER_TEMT : 0;
spin_unlock_irqrestore(&up->port.lock, flags);
- pm_runtime_put(&up->pdev->dev);
+ pm_runtime_mark_last_busy(up->dev);
+ pm_runtime_put_autosuspend(up->dev);
return ret;
}
static unsigned int serial_omap_get_mctrl(struct uart_port *port)
{
- struct uart_omap_port *up = (struct uart_omap_port *)port;
+ struct uart_omap_port *up = to_uart_omap_port(port);
unsigned int status;
unsigned int ret = 0;
- pm_runtime_get_sync(&up->pdev->dev);
+ pm_runtime_get_sync(up->dev);
status = check_modem_status(up);
- pm_runtime_put(&up->pdev->dev);
+ pm_runtime_mark_last_busy(up->dev);
+ pm_runtime_put_autosuspend(up->dev);
dev_dbg(up->port.dev, "serial_omap_get_mctrl+%d\n", up->port.line);
@@ -487,7 +499,7 @@ static unsigned int serial_omap_get_mctrl(struct uart_port *port)
static void serial_omap_set_mctrl(struct uart_port *port, unsigned int mctrl)
{
- struct uart_omap_port *up = (struct uart_omap_port *)port;
+ struct uart_omap_port *up = to_uart_omap_port(port);
unsigned char mcr = 0;
dev_dbg(up->port.dev, "serial_omap_set_mctrl+%d\n", up->port.line);
@@ -502,20 +514,31 @@ static void serial_omap_set_mctrl(struct uart_port *port, unsigned int mctrl)
if (mctrl & TIOCM_LOOP)
mcr |= UART_MCR_LOOP;
- pm_runtime_get_sync(&up->pdev->dev);
+ pm_runtime_get_sync(up->dev);
up->mcr = serial_in(up, UART_MCR);
up->mcr |= mcr;
serial_out(up, UART_MCR, up->mcr);
- pm_runtime_put(&up->pdev->dev);
+ pm_runtime_mark_last_busy(up->dev);
+ pm_runtime_put_autosuspend(up->dev);
+
+ if (gpio_is_valid(up->DTR_gpio) &&
+ !!(mctrl & TIOCM_DTR) != up->DTR_active) {
+ up->DTR_active = !up->DTR_active;
+ if (gpio_cansleep(up->DTR_gpio))
+ schedule_work(&up->qos_work);
+ else
+ gpio_set_value(up->DTR_gpio,
+ up->DTR_active != up->DTR_inverted);
+ }
}
static void serial_omap_break_ctl(struct uart_port *port, int break_state)
{
- struct uart_omap_port *up = (struct uart_omap_port *)port;
+ struct uart_omap_port *up = to_uart_omap_port(port);
unsigned long flags = 0;
dev_dbg(up->port.dev, "serial_omap_break_ctl+%d\n", up->port.line);
- pm_runtime_get_sync(&up->pdev->dev);
+ pm_runtime_get_sync(up->dev);
spin_lock_irqsave(&up->port.lock, flags);
if (break_state == -1)
up->lcr |= UART_LCR_SBC;
@@ -523,12 +546,13 @@ static void serial_omap_break_ctl(struct uart_port *port, int break_state)
up->lcr &= ~UART_LCR_SBC;
serial_out(up, UART_LCR, up->lcr);
spin_unlock_irqrestore(&up->port.lock, flags);
- pm_runtime_put(&up->pdev->dev);
+ pm_runtime_mark_last_busy(up->dev);
+ pm_runtime_put_autosuspend(up->dev);
}
static int serial_omap_startup(struct uart_port *port)
{
- struct uart_omap_port *up = (struct uart_omap_port *)port;
+ struct uart_omap_port *up = to_uart_omap_port(port);
unsigned long flags = 0;
int retval;
@@ -542,7 +566,7 @@ static int serial_omap_startup(struct uart_port *port)
dev_dbg(up->port.dev, "serial_omap_startup+%d\n", up->port.line);
- pm_runtime_get_sync(&up->pdev->dev);
+ pm_runtime_get_sync(up->dev);
/*
* Clear the FIFO buffers and disable them.
* (they will be reenabled in set_termios())
@@ -573,20 +597,6 @@ static int serial_omap_startup(struct uart_port *port)
spin_unlock_irqrestore(&up->port.lock, flags);
up->msr_saved_flags = 0;
- if (up->use_dma) {
- free_page((unsigned long)up->port.state->xmit.buf);
- up->port.state->xmit.buf = dma_alloc_coherent(NULL,
- UART_XMIT_SIZE,
- (dma_addr_t *)&(up->uart_dma.tx_buf_dma_phys),
- 0);
- init_timer(&(up->uart_dma.rx_timer));
- up->uart_dma.rx_timer.function = serial_omap_rxdma_poll;
- up->uart_dma.rx_timer.data = up->port.line;
- /* Currently the buffer size is 4KB. Can increase it */
- up->uart_dma.rx_buf = dma_alloc_coherent(NULL,
- up->uart_dma.rx_buf_size,
- (dma_addr_t *)&(up->uart_dma.rx_buf_dma_phys), 0);
- }
/*
* Finally, enable interrupts. Note: Modem status interrupts
* are set via set_termios(), which will be occurring imminently
@@ -598,20 +608,20 @@ static int serial_omap_startup(struct uart_port *port)
/* Enable module level wake up */
serial_out(up, UART_OMAP_WER, OMAP_UART_WER_MOD_WKUP);
- pm_runtime_mark_last_busy(&up->pdev->dev);
- pm_runtime_put_autosuspend(&up->pdev->dev);
+ pm_runtime_mark_last_busy(up->dev);
+ pm_runtime_put_autosuspend(up->dev);
up->port_activity = jiffies;
return 0;
}
static void serial_omap_shutdown(struct uart_port *port)
{
- struct uart_omap_port *up = (struct uart_omap_port *)port;
+ struct uart_omap_port *up = to_uart_omap_port(port);
unsigned long flags = 0;
dev_dbg(up->port.dev, "serial_omap_shutdown+%d\n", up->port.line);
- pm_runtime_get_sync(&up->pdev->dev);
+ pm_runtime_get_sync(up->dev);
/*
* Disable interrupts from this port
*/
@@ -634,19 +644,9 @@ static void serial_omap_shutdown(struct uart_port *port)
*/
if (serial_in(up, UART_LSR) & UART_LSR_DR)
(void) serial_in(up, UART_RX);
- if (up->use_dma) {
- dma_free_coherent(up->port.dev,
- UART_XMIT_SIZE, up->port.state->xmit.buf,
- up->uart_dma.tx_buf_dma_phys);
- up->port.state->xmit.buf = NULL;
- serial_omap_stop_rx(port);
- dma_free_coherent(up->port.dev,
- up->uart_dma.rx_buf_size, up->uart_dma.rx_buf,
- up->uart_dma.rx_buf_dma_phys);
- up->uart_dma.rx_buf = NULL;
- }
- pm_runtime_put(&up->pdev->dev);
+ pm_runtime_mark_last_busy(up->dev);
+ pm_runtime_put_autosuspend(up->dev);
free_irq(up->port.irq, up);
}
@@ -667,19 +667,19 @@ serial_omap_configure_xonxoff
/*
* IXON Flag:
- * Enable XON/XOFF flow control on output.
- * Transmit XON1, XOFF1
+ * Flow control for OMAP.TX
+ * OMAP.RX should listen for XON/XOFF
*/
if (termios->c_iflag & IXON)
- up->efr |= OMAP_UART_SW_TX;
+ up->efr |= OMAP_UART_SW_RX;
/*
* IXOFF Flag:
- * Enable XON/XOFF flow control on input.
- * Receiver compares XON1, XOFF1.
+ * Flow control for OMAP.RX
+ * OMAP.TX should send XON/XOFF
*/
if (termios->c_iflag & IXOFF)
- up->efr |= OMAP_UART_SW_RX;
+ up->efr |= OMAP_UART_SW_TX;
serial_out(up, UART_EFR, up->efr | UART_EFR_ECB);
serial_out(up, UART_LCR, UART_LCR_CONF_MODE_A);
@@ -715,13 +715,16 @@ static void serial_omap_uart_qos_work(struct work_struct *work)
qos_work);
pm_qos_update_request(&up->pm_qos_request, up->latency);
+ if (gpio_is_valid(up->DTR_gpio))
+ gpio_set_value_cansleep(up->DTR_gpio,
+ up->DTR_active != up->DTR_inverted);
}
static void
serial_omap_set_termios(struct uart_port *port, struct ktermios *termios,
struct ktermios *old)
{
- struct uart_omap_port *up = (struct uart_omap_port *)port;
+ struct uart_omap_port *up = to_uart_omap_port(port);
unsigned char cval = 0;
unsigned char efr = 0;
unsigned long flags = 0;
@@ -768,14 +771,12 @@ serial_omap_set_termios(struct uart_port *port, struct ktermios *termios,
up->fcr = UART_FCR_R_TRIG_01 | UART_FCR_T_TRIG_01 |
UART_FCR_ENABLE_FIFO;
- if (up->use_dma)
- up->fcr |= UART_FCR_DMA_SELECT;
/*
* Ok, we're now changing the port state. Do it with
* interrupts disabled.
*/
- pm_runtime_get_sync(&up->pdev->dev);
+ pm_runtime_get_sync(up->dev);
spin_lock_irqsave(&up->port.lock, flags);
/*
@@ -845,14 +846,13 @@ serial_omap_set_termios(struct uart_port *port, struct ktermios *termios,
up->scr |= OMAP_UART_SCR_RX_TRIG_GRANU1_MASK;
- if (up->use_dma) {
- serial_out(up, UART_TI752_TLR, 0);
- up->scr |= UART_FCR_TRIGGER_4;
- } else {
- /* Set receive FIFO threshold to 1 byte */
- up->fcr &= ~OMAP_UART_FCR_RX_FIFO_TRIG_MASK;
- up->fcr |= (0x1 << OMAP_UART_FCR_RX_FIFO_TRIG_SHIFT);
- }
+ /* Set receive FIFO threshold to 16 characters and
+ * transmit FIFO threshold to 16 spaces
+ */
+ up->fcr &= ~OMAP_UART_FCR_RX_FIFO_TRIG_MASK;
+ up->fcr &= ~OMAP_UART_FCR_TX_FIFO_TRIG_MASK;
+ up->fcr |= UART_FCR6_R_TRIGGER_16 | UART_FCR6_T_TRIGGER_24 |
+ UART_FCR_ENABLE_FIFO;
serial_out(up, UART_FCR, up->fcr);
serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B);
@@ -924,20 +924,30 @@ serial_omap_set_termios(struct uart_port *port, struct ktermios *termios,
serial_omap_configure_xonxoff(up, termios);
spin_unlock_irqrestore(&up->port.lock, flags);
- pm_runtime_put(&up->pdev->dev);
+ pm_runtime_mark_last_busy(up->dev);
+ pm_runtime_put_autosuspend(up->dev);
dev_dbg(up->port.dev, "serial_omap_set_termios+%d\n", up->port.line);
}
+static int serial_omap_set_wake(struct uart_port *port, unsigned int state)
+{
+ struct uart_omap_port *up = to_uart_omap_port(port);
+
+ serial_omap_enable_wakeup(up, state);
+
+ return 0;
+}
+
static void
serial_omap_pm(struct uart_port *port, unsigned int state,
unsigned int oldstate)
{
- struct uart_omap_port *up = (struct uart_omap_port *)port;
+ struct uart_omap_port *up = to_uart_omap_port(port);
unsigned char efr;
dev_dbg(up->port.dev, "serial_omap_pm+%d\n", up->port.line);
- pm_runtime_get_sync(&up->pdev->dev);
+ pm_runtime_get_sync(up->dev);
serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B);
efr = serial_in(up, UART_EFR);
serial_out(up, UART_EFR, efr | UART_EFR_ECB);
@@ -948,14 +958,15 @@ serial_omap_pm(struct uart_port *port, unsigned int state,
serial_out(up, UART_EFR, efr);
serial_out(up, UART_LCR, 0);
- if (!device_may_wakeup(&up->pdev->dev)) {
+ if (!device_may_wakeup(up->dev)) {
if (!state)
- pm_runtime_forbid(&up->pdev->dev);
+ pm_runtime_forbid(up->dev);
else
- pm_runtime_allow(&up->pdev->dev);
+ pm_runtime_allow(up->dev);
}
- pm_runtime_put(&up->pdev->dev);
+ pm_runtime_mark_last_busy(up->dev);
+ pm_runtime_put_autosuspend(up->dev);
}
static void serial_omap_release_port(struct uart_port *port)
@@ -971,7 +982,7 @@ static int serial_omap_request_port(struct uart_port *port)
static void serial_omap_config_port(struct uart_port *port, int flags)
{
- struct uart_omap_port *up = (struct uart_omap_port *)port;
+ struct uart_omap_port *up = to_uart_omap_port(port);
dev_dbg(up->port.dev, "serial_omap_config_port+%d\n",
up->port.line);
@@ -989,7 +1000,7 @@ serial_omap_verify_port(struct uart_port *port, struct serial_struct *ser)
static const char *
serial_omap_type(struct uart_port *port)
{
- struct uart_omap_port *up = (struct uart_omap_port *)port;
+ struct uart_omap_port *up = to_uart_omap_port(port);
dev_dbg(up->port.dev, "serial_omap_type+%d\n", up->port.line);
return up->name;
@@ -1032,26 +1043,33 @@ static inline void wait_for_xmitr(struct uart_omap_port *up)
static void serial_omap_poll_put_char(struct uart_port *port, unsigned char ch)
{
- struct uart_omap_port *up = (struct uart_omap_port *)port;
+ struct uart_omap_port *up = to_uart_omap_port(port);
- pm_runtime_get_sync(&up->pdev->dev);
+ pm_runtime_get_sync(up->dev);
wait_for_xmitr(up);
serial_out(up, UART_TX, ch);
- pm_runtime_put(&up->pdev->dev);
+ pm_runtime_mark_last_busy(up->dev);
+ pm_runtime_put_autosuspend(up->dev);
}
static int serial_omap_poll_get_char(struct uart_port *port)
{
- struct uart_omap_port *up = (struct uart_omap_port *)port;
+ struct uart_omap_port *up = to_uart_omap_port(port);
unsigned int status;
- pm_runtime_get_sync(&up->pdev->dev);
+ pm_runtime_get_sync(up->dev);
status = serial_in(up, UART_LSR);
- if (!(status & UART_LSR_DR))
- return NO_POLL_CHAR;
+ if (!(status & UART_LSR_DR)) {
+ status = NO_POLL_CHAR;
+ goto out;
+ }
status = serial_in(up, UART_RX);
- pm_runtime_put(&up->pdev->dev);
+
+out:
+ pm_runtime_mark_last_busy(up->dev);
+ pm_runtime_put_autosuspend(up->dev);
+
return status;
}
@@ -1065,7 +1083,7 @@ static struct uart_driver serial_omap_reg;
static void serial_omap_console_putchar(struct uart_port *port, int ch)
{
- struct uart_omap_port *up = (struct uart_omap_port *)port;
+ struct uart_omap_port *up = to_uart_omap_port(port);
wait_for_xmitr(up);
serial_out(up, UART_TX, ch);
@@ -1080,7 +1098,7 @@ serial_omap_console_write(struct console *co, const char *s,
unsigned int ier;
int locked = 1;
- pm_runtime_get_sync(&up->pdev->dev);
+ pm_runtime_get_sync(up->dev);
local_irq_save(flags);
if (up->port.sysrq)
@@ -1114,8 +1132,8 @@ serial_omap_console_write(struct console *co, const char *s,
if (up->msr_saved_flags)
check_modem_status(up);
- pm_runtime_mark_last_busy(&up->pdev->dev);
- pm_runtime_put_autosuspend(&up->pdev->dev);
+ pm_runtime_mark_last_busy(up->dev);
+ pm_runtime_put_autosuspend(up->dev);
if (locked)
spin_unlock(&up->port.lock);
local_irq_restore(flags);
@@ -1179,6 +1197,7 @@ static struct uart_ops serial_omap_pops = {
.shutdown = serial_omap_shutdown,
.set_termios = serial_omap_set_termios,
.pm = serial_omap_pm,
+ .set_wake = serial_omap_set_wake,
.type = serial_omap_type,
.release_port = serial_omap_release_port,
.request_port = serial_omap_request_port,
@@ -1221,150 +1240,7 @@ static int serial_omap_resume(struct device *dev)
}
#endif
-static void serial_omap_rxdma_poll(unsigned long uart_no)
-{
- struct uart_omap_port *up = ui[uart_no];
- unsigned int curr_dma_pos, curr_transmitted_size;
- int ret = 0;
-
- curr_dma_pos = omap_get_dma_dst_pos(up->uart_dma.rx_dma_channel);
- if ((curr_dma_pos == up->uart_dma.prev_rx_dma_pos) ||
- (curr_dma_pos == 0)) {
- if (jiffies_to_msecs(jiffies - up->port_activity) <
- up->uart_dma.rx_timeout) {
- mod_timer(&up->uart_dma.rx_timer, jiffies +
- usecs_to_jiffies(up->uart_dma.rx_poll_rate));
- } else {
- serial_omap_stop_rxdma(up);
- up->ier |= (UART_IER_RDI | UART_IER_RLSI);
- serial_out(up, UART_IER, up->ier);
- }
- return;
- }
-
- curr_transmitted_size = curr_dma_pos -
- up->uart_dma.prev_rx_dma_pos;
- up->port.icount.rx += curr_transmitted_size;
- tty_insert_flip_string(up->port.state->port.tty,
- up->uart_dma.rx_buf +
- (up->uart_dma.prev_rx_dma_pos -
- up->uart_dma.rx_buf_dma_phys),
- curr_transmitted_size);
- tty_flip_buffer_push(up->port.state->port.tty);
- up->uart_dma.prev_rx_dma_pos = curr_dma_pos;
- if (up->uart_dma.rx_buf_size +
- up->uart_dma.rx_buf_dma_phys == curr_dma_pos) {
- ret = serial_omap_start_rxdma(up);
- if (ret < 0) {
- serial_omap_stop_rxdma(up);
- up->ier |= (UART_IER_RDI | UART_IER_RLSI);
- serial_out(up, UART_IER, up->ier);
- }
- } else {
- mod_timer(&up->uart_dma.rx_timer, jiffies +
- usecs_to_jiffies(up->uart_dma.rx_poll_rate));
- }
- up->port_activity = jiffies;
-}
-
-static void uart_rx_dma_callback(int lch, u16 ch_status, void *data)
-{
- return;
-}
-
-static int serial_omap_start_rxdma(struct uart_omap_port *up)
-{
- int ret = 0;
-
- if (up->uart_dma.rx_dma_channel == -1) {
- pm_runtime_get_sync(&up->pdev->dev);
- ret = omap_request_dma(up->uart_dma.uart_dma_rx,
- "UART Rx DMA",
- (void *)uart_rx_dma_callback, up,
- &(up->uart_dma.rx_dma_channel));
- if (ret < 0)
- return ret;
-
- omap_set_dma_src_params(up->uart_dma.rx_dma_channel, 0,
- OMAP_DMA_AMODE_CONSTANT,
- up->uart_dma.uart_base, 0, 0);
- omap_set_dma_dest_params(up->uart_dma.rx_dma_channel, 0,
- OMAP_DMA_AMODE_POST_INC,
- up->uart_dma.rx_buf_dma_phys, 0, 0);
- omap_set_dma_transfer_params(up->uart_dma.rx_dma_channel,
- OMAP_DMA_DATA_TYPE_S8,
- up->uart_dma.rx_buf_size, 1,
- OMAP_DMA_SYNC_ELEMENT,
- up->uart_dma.uart_dma_rx, 0);
- }
- up->uart_dma.prev_rx_dma_pos = up->uart_dma.rx_buf_dma_phys;
- /* FIXME: Cache maintenance needed here? */
- omap_start_dma(up->uart_dma.rx_dma_channel);
- mod_timer(&up->uart_dma.rx_timer, jiffies +
- usecs_to_jiffies(up->uart_dma.rx_poll_rate));
- up->uart_dma.rx_dma_used = true;
- return ret;
-}
-
-static void serial_omap_continue_tx(struct uart_omap_port *up)
-{
- struct circ_buf *xmit = &up->port.state->xmit;
- unsigned int start = up->uart_dma.tx_buf_dma_phys
- + (xmit->tail & (UART_XMIT_SIZE - 1));
-
- if (uart_circ_empty(xmit))
- return;
-
- up->uart_dma.tx_buf_size = uart_circ_chars_pending(xmit);
- /*
- * It is a circular buffer. See if the buffer has wounded back.
- * If yes it will have to be transferred in two separate dma
- * transfers
- */
- if (start + up->uart_dma.tx_buf_size >=
- up->uart_dma.tx_buf_dma_phys + UART_XMIT_SIZE)
- up->uart_dma.tx_buf_size =
- (up->uart_dma.tx_buf_dma_phys + UART_XMIT_SIZE) - start;
- omap_set_dma_dest_params(up->uart_dma.tx_dma_channel, 0,
- OMAP_DMA_AMODE_CONSTANT,
- up->uart_dma.uart_base, 0, 0);
- omap_set_dma_src_params(up->uart_dma.tx_dma_channel, 0,
- OMAP_DMA_AMODE_POST_INC, start, 0, 0);
- omap_set_dma_transfer_params(up->uart_dma.tx_dma_channel,
- OMAP_DMA_DATA_TYPE_S8,
- up->uart_dma.tx_buf_size, 1,
- OMAP_DMA_SYNC_ELEMENT,
- up->uart_dma.uart_dma_tx, 0);
- /* FIXME: Cache maintenance needed here? */
- omap_start_dma(up->uart_dma.tx_dma_channel);
-}
-
-static void uart_tx_dma_callback(int lch, u16 ch_status, void *data)
-{
- struct uart_omap_port *up = (struct uart_omap_port *)data;
- struct circ_buf *xmit = &up->port.state->xmit;
-
- xmit->tail = (xmit->tail + up->uart_dma.tx_buf_size) & \
- (UART_XMIT_SIZE - 1);
- up->port.icount.tx += up->uart_dma.tx_buf_size;
-
- if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS)
- uart_write_wakeup(&up->port);
-
- if (uart_circ_empty(xmit)) {
- spin_lock(&(up->uart_dma.tx_lock));
- serial_omap_stop_tx(&up->port);
- up->uart_dma.tx_dma_used = false;
- spin_unlock(&(up->uart_dma.tx_lock));
- } else {
- omap_stop_dma(up->uart_dma.tx_dma_channel);
- serial_omap_continue_tx(up);
- }
- up->port_activity = jiffies;
- return;
-}
-
-static void omap_serial_fill_features_erratas(struct uart_omap_port *up)
+static void __devinit omap_serial_fill_features_erratas(struct uart_omap_port *up)
{
u32 mvr, scheme;
u16 revision, major, minor;
@@ -1389,7 +1265,7 @@ static void omap_serial_fill_features_erratas(struct uart_omap_port *up)
minor = (mvr & OMAP_UART_MVR_MIN_MASK);
break;
default:
- dev_warn(&up->pdev->dev,
+ dev_warn(up->dev,
"Unknown %s revision, defaulting to highest\n",
up->name);
/* highest possible revision */
@@ -1417,7 +1293,7 @@ static void omap_serial_fill_features_erratas(struct uart_omap_port *up)
}
}
-static struct omap_uart_port_info *of_get_uart_port_info(struct device *dev)
+static __devinit struct omap_uart_port_info *of_get_uart_port_info(struct device *dev)
{
struct omap_uart_port_info *omap_up_info;
@@ -1430,12 +1306,12 @@ static struct omap_uart_port_info *of_get_uart_port_info(struct device *dev)
return omap_up_info;
}
-static int serial_omap_probe(struct platform_device *pdev)
+static int __devinit serial_omap_probe(struct platform_device *pdev)
{
struct uart_omap_port *up;
- struct resource *mem, *irq, *dma_tx, *dma_rx;
+ struct resource *mem, *irq;
struct omap_uart_port_info *omap_up_info = pdev->dev.platform_data;
- int ret = -ENOSPC;
+ int ret;
if (pdev->dev.of_node)
omap_up_info = of_get_uart_port_info(&pdev->dev);
@@ -1458,19 +1334,30 @@ static int serial_omap_probe(struct platform_device *pdev)
return -EBUSY;
}
- dma_rx = platform_get_resource_byname(pdev, IORESOURCE_DMA, "rx");
- if (!dma_rx)
- return -ENXIO;
-
- dma_tx = platform_get_resource_byname(pdev, IORESOURCE_DMA, "tx");
- if (!dma_tx)
- return -ENXIO;
+ if (gpio_is_valid(omap_up_info->DTR_gpio) &&
+ omap_up_info->DTR_present) {
+ ret = gpio_request(omap_up_info->DTR_gpio, "omap-serial");
+ if (ret < 0)
+ return ret;
+ ret = gpio_direction_output(omap_up_info->DTR_gpio,
+ omap_up_info->DTR_inverted);
+ if (ret < 0)
+ return ret;
+ }
up = devm_kzalloc(&pdev->dev, sizeof(*up), GFP_KERNEL);
if (!up)
return -ENOMEM;
- up->pdev = pdev;
+ if (gpio_is_valid(omap_up_info->DTR_gpio) &&
+ omap_up_info->DTR_present) {
+ up->DTR_gpio = omap_up_info->DTR_gpio;
+ up->DTR_inverted = omap_up_info->DTR_inverted;
+ } else
+ up->DTR_gpio = -EINVAL;
+ up->DTR_active = 0;
+
+ up->dev = &pdev->dev;
up->port.dev = &pdev->dev;
up->port.type = PORT_OMAP;
up->port.iotype = UPIO_MEM;
@@ -1492,6 +1379,13 @@ static int serial_omap_probe(struct platform_device *pdev)
goto err_port_line;
}
+ up->pins = devm_pinctrl_get_select_default(&pdev->dev);
+ if (IS_ERR(up->pins)) {
+ dev_warn(&pdev->dev, "did not get pins for uart%i error: %li\n",
+ up->port.line, PTR_ERR(up->pins));
+ up->pins = NULL;
+ }
+
sprintf(up->name, "OMAP UART%d", up->port.line);
up->port.mapbase = mem->start;
up->port.membase = devm_ioremap(&pdev->dev, mem->start,
@@ -1509,20 +1403,6 @@ static int serial_omap_probe(struct platform_device *pdev)
dev_warn(&pdev->dev, "No clock speed specified: using default:"
"%d\n", DEFAULT_CLK_SPEED);
}
- up->uart_dma.uart_base = mem->start;
-
- if (omap_up_info->dma_enabled) {
- up->uart_dma.uart_dma_tx = dma_tx->start;
- up->uart_dma.uart_dma_rx = dma_rx->start;
- up->use_dma = 1;
- up->uart_dma.rx_buf_size = omap_up_info->dma_rx_buf_size;
- up->uart_dma.rx_timeout = omap_up_info->dma_rx_timeout;
- up->uart_dma.rx_poll_rate = omap_up_info->dma_rx_poll_rate;
- spin_lock_init(&(up->uart_dma.tx_lock));
- spin_lock_init(&(up->uart_dma.rx_lock));
- up->uart_dma.tx_dma_channel = OMAP_UART_DMA_CH_FREE;
- up->uart_dma.rx_dma_channel = OMAP_UART_DMA_CH_FREE;
- }
up->latency = PM_QOS_CPU_DMA_LAT_DEFAULT_VALUE;
up->calc_latency = PM_QOS_CPU_DMA_LAT_DEFAULT_VALUE;
@@ -1531,12 +1411,13 @@ static int serial_omap_probe(struct platform_device *pdev)
serial_omap_uart_wq = create_singlethread_workqueue(up->name);
INIT_WORK(&up->qos_work, serial_omap_uart_qos_work);
+ platform_set_drvdata(pdev, up);
+ pm_runtime_enable(&pdev->dev);
pm_runtime_use_autosuspend(&pdev->dev);
pm_runtime_set_autosuspend_delay(&pdev->dev,
omap_up_info->autosuspend_timeout);
pm_runtime_irq_safe(&pdev->dev);
- pm_runtime_enable(&pdev->dev);
pm_runtime_get_sync(&pdev->dev);
omap_serial_fill_features_erratas(up);
@@ -1548,8 +1429,8 @@ static int serial_omap_probe(struct platform_device *pdev)
if (ret != 0)
goto err_add_port;
- pm_runtime_put(&pdev->dev);
- platform_set_drvdata(pdev, up);
+ pm_runtime_mark_last_busy(up->dev);
+ pm_runtime_put_autosuspend(up->dev);
return 0;
err_add_port:
@@ -1562,17 +1443,15 @@ err_port_line:
return ret;
}
-static int serial_omap_remove(struct platform_device *dev)
+static int __devexit serial_omap_remove(struct platform_device *dev)
{
struct uart_omap_port *up = platform_get_drvdata(dev);
- if (up) {
- pm_runtime_disable(&up->pdev->dev);
- uart_remove_one_port(&serial_omap_reg, &up->port);
- pm_qos_remove_request(&up->pm_qos_request);
- }
+ pm_runtime_put_sync(up->dev);
+ pm_runtime_disable(up->dev);
+ uart_remove_one_port(&serial_omap_reg, &up->port);
+ pm_qos_remove_request(&up->pm_qos_request);
- platform_set_drvdata(dev, NULL);
return 0;
}
@@ -1602,7 +1481,7 @@ static void serial_omap_mdr1_errataset(struct uart_omap_port *up, u8 mdr1)
timeout--;
if (!timeout) {
/* Should *never* happen. we warn and carry on */
- dev_crit(&up->pdev->dev, "Errata i202: timedout %x\n",
+ dev_crit(up->dev, "Errata i202: timedout %x\n",
serial_in(up, UART_LSR));
break;
}
@@ -1648,29 +1527,23 @@ static int serial_omap_runtime_suspend(struct device *dev)
if (!up)
return -EINVAL;
- if (!pdata || !pdata->enable_wakeup)
+ if (!pdata)
return 0;
- if (pdata->get_context_loss_count)
- up->context_loss_cnt = pdata->get_context_loss_count(dev);
+ up->context_loss_cnt = serial_omap_get_context_loss_count(up);
if (device_may_wakeup(dev)) {
if (!up->wakeups_enabled) {
- pdata->enable_wakeup(up->pdev, true);
+ serial_omap_enable_wakeup(up, true);
up->wakeups_enabled = true;
}
} else {
if (up->wakeups_enabled) {
- pdata->enable_wakeup(up->pdev, false);
+ serial_omap_enable_wakeup(up, false);
up->wakeups_enabled = false;
}
}
- /* Errata i291 */
- if (up->use_dma && pdata->set_forceidle &&
- (up->errata & UART_ERRATA_i291_DMA_FORCEIDLE))
- pdata->set_forceidle(up->pdev);
-
up->latency = PM_QOS_CPU_DMA_LAT_DEFAULT_VALUE;
schedule_work(&up->qos_work);
@@ -1683,17 +1556,10 @@ static int serial_omap_runtime_resume(struct device *dev)
struct omap_uart_port_info *pdata = dev->platform_data;
if (up && pdata) {
- if (pdata->get_context_loss_count) {
- u32 loss_cnt = pdata->get_context_loss_count(dev);
+ u32 loss_cnt = serial_omap_get_context_loss_count(up);
if (up->context_loss_cnt != loss_cnt)
serial_omap_restore_context(up);
- }
-
- /* Errata i291 */
- if (up->use_dma && pdata->set_noidle &&
- (up->errata & UART_ERRATA_i291_DMA_FORCEIDLE))
- pdata->set_noidle(up->pdev);
up->latency = up->calc_latency;
schedule_work(&up->qos_work);
@@ -1721,7 +1587,7 @@ MODULE_DEVICE_TABLE(of, omap_serial_of_match);
static struct platform_driver serial_omap_driver = {
.probe = serial_omap_probe,
- .remove = serial_omap_remove,
+ .remove = __devexit_p(serial_omap_remove),
.driver = {
.name = DRIVER_NAME,
.pm = &serial_omap_dev_pm_ops,
diff --git a/drivers/tty/serial/pch_uart.c b/drivers/tty/serial/pch_uart.c
index 558ce8509a9..4cd6c238152 100644
--- a/drivers/tty/serial/pch_uart.c
+++ b/drivers/tty/serial/pch_uart.c
@@ -979,6 +979,10 @@ static unsigned int dma_handle_tx(struct eg20t_port *priv)
priv->tx_dma_use = 1;
priv->sg_tx_p = kzalloc(sizeof(struct scatterlist)*num, GFP_ATOMIC);
+ if (!priv->sg_tx_p) {
+ dev_err(priv->port.dev, "%s:kzalloc Failed\n", __func__);
+ return 0;
+ }
sg_init_table(priv->sg_tx_p, num); /* Initialize SG table */
sg = priv->sg_tx_p;
diff --git a/drivers/tty/serial/pxa.c b/drivers/tty/serial/pxa.c
index 5847a4b855f..9033fc6e0e4 100644
--- a/drivers/tty/serial/pxa.c
+++ b/drivers/tty/serial/pxa.c
@@ -670,9 +670,19 @@ serial_pxa_console_write(struct console *co, const char *s, unsigned int count)
{
struct uart_pxa_port *up = serial_pxa_ports[co->index];
unsigned int ier;
+ unsigned long flags;
+ int locked = 1;
clk_prepare_enable(up->clk);
+ local_irq_save(flags);
+ if (up->port.sysrq)
+ locked = 0;
+ else if (oops_in_progress)
+ locked = spin_trylock(&up->port.lock);
+ else
+ spin_lock(&up->port.lock);
+
/*
* First save the IER then disable the interrupts
*/
@@ -688,6 +698,10 @@ serial_pxa_console_write(struct console *co, const char *s, unsigned int count)
wait_for_xmitr(up);
serial_out(up, UART_IER, ier);
+ if (locked)
+ spin_unlock(&up->port.lock);
+ local_irq_restore(flags);
+
clk_disable_unprepare(up->clk);
}
diff --git a/drivers/tty/serial/samsung.c b/drivers/tty/serial/samsung.c
index 02d07bfcfa8..bdaa06f3ab6 100644
--- a/drivers/tty/serial/samsung.c
+++ b/drivers/tty/serial/samsung.c
@@ -82,7 +82,7 @@ static inline const char *s3c24xx_serial_portname(struct uart_port *port)
static int s3c24xx_serial_txempty_nofifo(struct uart_port *port)
{
- return (rd_regl(port, S3C2410_UTRSTAT) & S3C2410_UTRSTAT_TXE);
+ return rd_regl(port, S3C2410_UTRSTAT) & S3C2410_UTRSTAT_TXE;
}
/*
@@ -268,7 +268,7 @@ s3c24xx_serial_rx_chars(int irq, void *dev_id)
dbg("break!\n");
port->icount.brk++;
if (uart_handle_break(port))
- goto ignore_char;
+ goto ignore_char;
}
if (uerstat & S3C2410_UERSTAT_FRAME)
@@ -459,7 +459,7 @@ static int s3c24xx_serial_startup(struct uart_port *port)
s3c24xx_serial_portname(port), ourport);
if (ret != 0) {
- printk(KERN_ERR "cannot get irq %d\n", ourport->rx_irq);
+ dev_err(port->dev, "cannot get irq %d\n", ourport->rx_irq);
return ret;
}
@@ -473,7 +473,7 @@ static int s3c24xx_serial_startup(struct uart_port *port)
s3c24xx_serial_portname(port), ourport);
if (ret) {
- printk(KERN_ERR "cannot get irq %d\n", ourport->tx_irq);
+ dev_err(port->dev, "cannot get irq %d\n", ourport->tx_irq);
goto err;
}
@@ -502,7 +502,7 @@ static int s3c64xx_serial_startup(struct uart_port *port)
ret = request_irq(port->irq, s3c64xx_serial_handle_irq, IRQF_SHARED,
s3c24xx_serial_portname(port), ourport);
if (ret) {
- printk(KERN_ERR "cannot get irq %d\n", port->irq);
+ dev_err(port->dev, "cannot get irq %d\n", port->irq);
return ret;
}
@@ -529,7 +529,7 @@ static void s3c24xx_serial_pm(struct uart_port *port, unsigned int level,
switch (level) {
case 3:
- if (!IS_ERR(ourport->baudclk) && ourport->baudclk != NULL)
+ if (!IS_ERR(ourport->baudclk))
clk_disable(ourport->baudclk);
clk_disable(ourport->clk);
@@ -538,12 +538,12 @@ static void s3c24xx_serial_pm(struct uart_port *port, unsigned int level,
case 0:
clk_enable(ourport->clk);
- if (!IS_ERR(ourport->baudclk) && ourport->baudclk != NULL)
+ if (!IS_ERR(ourport->baudclk))
clk_enable(ourport->baudclk);
break;
default:
- printk(KERN_ERR "s3c24xx_serial: unknown pm %d\n", level);
+ dev_err(port->dev, "s3c24xx_serial: unknown pm %d\n", level);
}
}
@@ -604,7 +604,6 @@ static unsigned int s3c24xx_serial_getclk(struct s3c24xx_uart_port *ourport,
char clkname[MAX_CLK_NAME_LENGTH];
int calc_deviation, deviation = (1 << 30) - 1;
- *best_clk = NULL;
clk_sel = (ourport->cfg->clk_sel) ? ourport->cfg->clk_sel :
ourport->info->def_clk_sel;
for (cnt = 0; cnt < info->num_clks; cnt++) {
@@ -613,7 +612,7 @@ static unsigned int s3c24xx_serial_getclk(struct s3c24xx_uart_port *ourport,
sprintf(clkname, "clk_uart_baud%d", cnt);
clk = clk_get(ourport->port.dev, clkname);
- if (IS_ERR_OR_NULL(clk))
+ if (IS_ERR(clk))
continue;
rate = clk_get_rate(clk);
@@ -684,7 +683,7 @@ static void s3c24xx_serial_set_termios(struct uart_port *port,
{
struct s3c2410_uartcfg *cfg = s3c24xx_port_to_cfg(port);
struct s3c24xx_uart_port *ourport = to_ourport(port);
- struct clk *clk = NULL;
+ struct clk *clk = ERR_PTR(-EINVAL);
unsigned long flags;
unsigned int baud, quot, clk_sel = 0;
unsigned int ulcon;
@@ -705,7 +704,7 @@ static void s3c24xx_serial_set_termios(struct uart_port *port,
quot = s3c24xx_serial_getclk(ourport, baud, &clk, &clk_sel);
if (baud == 38400 && (port->flags & UPF_SPD_MASK) == UPF_SPD_CUST)
quot = port->custom_divisor;
- if (!clk)
+ if (IS_ERR(clk))
return;
/* check to see if we need to change clock source */
@@ -713,9 +712,9 @@ static void s3c24xx_serial_set_termios(struct uart_port *port,
if (ourport->baudclk != clk) {
s3c24xx_serial_setsource(port, clk_sel);
- if (ourport->baudclk != NULL && !IS_ERR(ourport->baudclk)) {
+ if (!IS_ERR(ourport->baudclk)) {
clk_disable(ourport->baudclk);
- ourport->baudclk = NULL;
+ ourport->baudclk = ERR_PTR(-EINVAL);
}
clk_enable(clk);
@@ -1036,10 +1035,10 @@ static int s3c24xx_serial_cpufreq_transition(struct notifier_block *nb,
if (tty == NULL)
goto exit;
- termios = tty->termios;
+ termios = &tty->termios;
if (termios == NULL) {
- printk(KERN_WARNING "%s: no termios?\n", __func__);
+ dev_warn(uport->dev, "%s: no termios?\n", __func__);
goto exit;
}
@@ -1114,7 +1113,7 @@ static int s3c24xx_serial_init_port(struct s3c24xx_uart_port *ourport,
res = platform_get_resource(platdev, IORESOURCE_MEM, 0);
if (res == NULL) {
- printk(KERN_ERR "failed to find memory resource for uart\n");
+ dev_err(port->dev, "failed to find memory resource for uart\n");
return -EINVAL;
}
@@ -1130,7 +1129,7 @@ static int s3c24xx_serial_init_port(struct s3c24xx_uart_port *ourport,
ourport->rx_irq = ret;
ourport->tx_irq = ret + 1;
}
-
+
ret = platform_get_irq(platdev, 1);
if (ret > 0)
ourport->tx_irq = ret;
@@ -1160,7 +1159,11 @@ static ssize_t s3c24xx_serial_show_clksrc(struct device *dev,
struct uart_port *port = s3c24xx_dev_to_port(dev);
struct s3c24xx_uart_port *ourport = to_ourport(port);
- return snprintf(buf, PAGE_SIZE, "* %s\n", ourport->baudclk->name);
+ if (IS_ERR(ourport->baudclk))
+ return -EINVAL;
+
+ return snprintf(buf, PAGE_SIZE, "* %s\n",
+ ourport->baudclk->name ?: "(null)");
}
static DEVICE_ATTR(clock_source, S_IRUGO, s3c24xx_serial_show_clksrc, NULL);
@@ -1200,6 +1203,7 @@ static int s3c24xx_serial_probe(struct platform_device *pdev)
return -ENODEV;
}
+ ourport->baudclk = ERR_PTR(-EINVAL);
ourport->info = ourport->drv_data->info;
ourport->cfg = (pdev->dev.platform_data) ?
(struct s3c2410_uartcfg *)pdev->dev.platform_data :
@@ -1387,7 +1391,7 @@ s3c24xx_serial_get_options(struct uart_port *port, int *baud,
sprintf(clk_name, "clk_uart_baud%d", clk_sel);
clk = clk_get(port->dev, clk_name);
- if (!IS_ERR(clk) && clk != NULL)
+ if (!IS_ERR(clk))
rate = clk_get_rate(clk);
else
rate = 1;
@@ -1679,7 +1683,7 @@ static int __init s3c24xx_serial_modinit(void)
ret = uart_register_driver(&s3c24xx_uart_drv);
if (ret < 0) {
- printk(KERN_ERR "failed to register UART driver\n");
+ pr_err("Failed to register Samsung UART driver\n");
return -1;
}
diff --git a/drivers/tty/serial/sc26xx.c b/drivers/tty/serial/sc26xx.c
index e0b4b0a30a5..9d664242b31 100644
--- a/drivers/tty/serial/sc26xx.c
+++ b/drivers/tty/serial/sc26xx.c
@@ -20,6 +20,10 @@
#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/irq.h>
+#include <linux/io.h>
+
+#warning "Please try migrate to use new driver SCCNXP and report the status" \
+ "in the linux-serial mailing list."
#if defined(CONFIG_MAGIC_SYSRQ)
#define SUPPORT_SYSRQ
diff --git a/drivers/tty/serial/sccnxp.c b/drivers/tty/serial/sccnxp.c
new file mode 100644
index 00000000000..05d767cf82a
--- /dev/null
+++ b/drivers/tty/serial/sccnxp.c
@@ -0,0 +1,985 @@
+/*
+ * NXP (Philips) SCC+++(SCN+++) serial driver
+ *
+ * Copyright (C) 2012 Alexander Shiyan <shc_work@mail.ru>
+ *
+ * Based on sc26xx.c, by Thomas Bogendörfer (tsbogend@alpha.franken.de)
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#if defined(CONFIG_SERIAL_SCCNXP_CONSOLE) && defined(CONFIG_MAGIC_SYSRQ)
+#define SUPPORT_SYSRQ
+#endif
+
+#include <linux/module.h>
+#include <linux/device.h>
+#include <linux/console.h>
+#include <linux/serial_core.h>
+#include <linux/serial.h>
+#include <linux/io.h>
+#include <linux/tty.h>
+#include <linux/tty_flip.h>
+#include <linux/platform_device.h>
+#include <linux/platform_data/sccnxp.h>
+
+#define SCCNXP_NAME "uart-sccnxp"
+#define SCCNXP_MAJOR 204
+#define SCCNXP_MINOR 205
+
+#define SCCNXP_MR_REG (0x00)
+# define MR0_BAUD_NORMAL (0 << 0)
+# define MR0_BAUD_EXT1 (1 << 0)
+# define MR0_BAUD_EXT2 (5 << 0)
+# define MR0_FIFO (1 << 3)
+# define MR0_TXLVL (1 << 4)
+# define MR1_BITS_5 (0 << 0)
+# define MR1_BITS_6 (1 << 0)
+# define MR1_BITS_7 (2 << 0)
+# define MR1_BITS_8 (3 << 0)
+# define MR1_PAR_EVN (0 << 2)
+# define MR1_PAR_ODD (1 << 2)
+# define MR1_PAR_NO (4 << 2)
+# define MR2_STOP1 (7 << 0)
+# define MR2_STOP2 (0xf << 0)
+#define SCCNXP_SR_REG (0x01)
+#define SCCNXP_CSR_REG SCCNXP_SR_REG
+# define SR_RXRDY (1 << 0)
+# define SR_FULL (1 << 1)
+# define SR_TXRDY (1 << 2)
+# define SR_TXEMT (1 << 3)
+# define SR_OVR (1 << 4)
+# define SR_PE (1 << 5)
+# define SR_FE (1 << 6)
+# define SR_BRK (1 << 7)
+#define SCCNXP_CR_REG (0x02)
+# define CR_RX_ENABLE (1 << 0)
+# define CR_RX_DISABLE (1 << 1)
+# define CR_TX_ENABLE (1 << 2)
+# define CR_TX_DISABLE (1 << 3)
+# define CR_CMD_MRPTR1 (0x01 << 4)
+# define CR_CMD_RX_RESET (0x02 << 4)
+# define CR_CMD_TX_RESET (0x03 << 4)
+# define CR_CMD_STATUS_RESET (0x04 << 4)
+# define CR_CMD_BREAK_RESET (0x05 << 4)
+# define CR_CMD_START_BREAK (0x06 << 4)
+# define CR_CMD_STOP_BREAK (0x07 << 4)
+# define CR_CMD_MRPTR0 (0x0b << 4)
+#define SCCNXP_RHR_REG (0x03)
+#define SCCNXP_THR_REG SCCNXP_RHR_REG
+#define SCCNXP_IPCR_REG (0x04)
+#define SCCNXP_ACR_REG SCCNXP_IPCR_REG
+# define ACR_BAUD0 (0 << 7)
+# define ACR_BAUD1 (1 << 7)
+# define ACR_TIMER_MODE (6 << 4)
+#define SCCNXP_ISR_REG (0x05)
+#define SCCNXP_IMR_REG SCCNXP_ISR_REG
+# define IMR_TXRDY (1 << 0)
+# define IMR_RXRDY (1 << 1)
+# define ISR_TXRDY(x) (1 << ((x * 4) + 0))
+# define ISR_RXRDY(x) (1 << ((x * 4) + 1))
+#define SCCNXP_IPR_REG (0x0d)
+#define SCCNXP_OPCR_REG SCCNXP_IPR_REG
+#define SCCNXP_SOP_REG (0x0e)
+#define SCCNXP_ROP_REG (0x0f)
+
+/* Route helpers */
+#define MCTRL_MASK(sig) (0xf << (sig))
+#define MCTRL_IBIT(cfg, sig) ((((cfg) >> (sig)) & 0xf) - LINE_IP0)
+#define MCTRL_OBIT(cfg, sig) ((((cfg) >> (sig)) & 0xf) - LINE_OP0)
+
+/* Supported chip types */
+enum {
+ SCCNXP_TYPE_SC2681 = 2681,
+ SCCNXP_TYPE_SC2691 = 2691,
+ SCCNXP_TYPE_SC2692 = 2692,
+ SCCNXP_TYPE_SC2891 = 2891,
+ SCCNXP_TYPE_SC2892 = 2892,
+ SCCNXP_TYPE_SC28202 = 28202,
+ SCCNXP_TYPE_SC68681 = 68681,
+ SCCNXP_TYPE_SC68692 = 68692,
+};
+
+struct sccnxp_port {
+ struct uart_driver uart;
+ struct uart_port port[SCCNXP_MAX_UARTS];
+
+ const char *name;
+ int irq;
+
+ u8 imr;
+ u8 addr_mask;
+ int freq_std;
+
+ int flags;
+#define SCCNXP_HAVE_IO 0x00000001
+#define SCCNXP_HAVE_MR0 0x00000002
+
+#ifdef CONFIG_SERIAL_SCCNXP_CONSOLE
+ struct console console;
+#endif
+
+ struct mutex sccnxp_mutex;
+
+ struct sccnxp_pdata pdata;
+};
+
+static inline u8 sccnxp_raw_read(void __iomem *base, u8 reg, u8 shift)
+{
+ return readb(base + (reg << shift));
+}
+
+static inline void sccnxp_raw_write(void __iomem *base, u8 reg, u8 shift, u8 v)
+{
+ writeb(v, base + (reg << shift));
+}
+
+static inline u8 sccnxp_read(struct uart_port *port, u8 reg)
+{
+ struct sccnxp_port *s = dev_get_drvdata(port->dev);
+
+ return sccnxp_raw_read(port->membase, reg & s->addr_mask,
+ port->regshift);
+}
+
+static inline void sccnxp_write(struct uart_port *port, u8 reg, u8 v)
+{
+ struct sccnxp_port *s = dev_get_drvdata(port->dev);
+
+ sccnxp_raw_write(port->membase, reg & s->addr_mask, port->regshift, v);
+}
+
+static inline u8 sccnxp_port_read(struct uart_port *port, u8 reg)
+{
+ return sccnxp_read(port, (port->line << 3) + reg);
+}
+
+static inline void sccnxp_port_write(struct uart_port *port, u8 reg, u8 v)
+{
+ sccnxp_write(port, (port->line << 3) + reg, v);
+}
+
+static int sccnxp_update_best_err(int a, int b, int *besterr)
+{
+ int err = abs(a - b);
+
+ if ((*besterr < 0) || (*besterr > err)) {
+ *besterr = err;
+ return 0;
+ }
+
+ return 1;
+}
+
+struct baud_table {
+ u8 csr;
+ u8 acr;
+ u8 mr0;
+ int baud;
+};
+
+const struct baud_table baud_std[] = {
+ { 0, ACR_BAUD0, MR0_BAUD_NORMAL, 50, },
+ { 0, ACR_BAUD1, MR0_BAUD_NORMAL, 75, },
+ { 1, ACR_BAUD0, MR0_BAUD_NORMAL, 110, },
+ { 2, ACR_BAUD0, MR0_BAUD_NORMAL, 134, },
+ { 3, ACR_BAUD1, MR0_BAUD_NORMAL, 150, },
+ { 3, ACR_BAUD0, MR0_BAUD_NORMAL, 200, },
+ { 4, ACR_BAUD0, MR0_BAUD_NORMAL, 300, },
+ { 0, ACR_BAUD1, MR0_BAUD_EXT1, 450, },
+ { 1, ACR_BAUD0, MR0_BAUD_EXT2, 880, },
+ { 3, ACR_BAUD1, MR0_BAUD_EXT1, 900, },
+ { 5, ACR_BAUD0, MR0_BAUD_NORMAL, 600, },
+ { 7, ACR_BAUD0, MR0_BAUD_NORMAL, 1050, },
+ { 2, ACR_BAUD0, MR0_BAUD_EXT2, 1076, },
+ { 6, ACR_BAUD0, MR0_BAUD_NORMAL, 1200, },
+ { 10, ACR_BAUD1, MR0_BAUD_NORMAL, 1800, },
+ { 7, ACR_BAUD1, MR0_BAUD_NORMAL, 2000, },
+ { 8, ACR_BAUD0, MR0_BAUD_NORMAL, 2400, },
+ { 5, ACR_BAUD1, MR0_BAUD_EXT1, 3600, },
+ { 9, ACR_BAUD0, MR0_BAUD_NORMAL, 4800, },
+ { 10, ACR_BAUD0, MR0_BAUD_NORMAL, 7200, },
+ { 11, ACR_BAUD0, MR0_BAUD_NORMAL, 9600, },
+ { 8, ACR_BAUD0, MR0_BAUD_EXT1, 14400, },
+ { 12, ACR_BAUD1, MR0_BAUD_NORMAL, 19200, },
+ { 9, ACR_BAUD0, MR0_BAUD_EXT1, 28800, },
+ { 12, ACR_BAUD0, MR0_BAUD_NORMAL, 38400, },
+ { 11, ACR_BAUD0, MR0_BAUD_EXT1, 57600, },
+ { 12, ACR_BAUD1, MR0_BAUD_EXT1, 115200, },
+ { 12, ACR_BAUD0, MR0_BAUD_EXT1, 230400, },
+ { 0, 0, 0, 0 }
+};
+
+static void sccnxp_set_baud(struct uart_port *port, int baud)
+{
+ struct sccnxp_port *s = dev_get_drvdata(port->dev);
+ int div_std, tmp_baud, bestbaud = baud, besterr = -1;
+ u8 i, acr = 0, csr = 0, mr0 = 0;
+
+ /* Find best baud from table */
+ for (i = 0; baud_std[i].baud && besterr; i++) {
+ if (baud_std[i].mr0 && !(s->flags & SCCNXP_HAVE_MR0))
+ continue;
+ div_std = DIV_ROUND_CLOSEST(s->freq_std, baud_std[i].baud);
+ tmp_baud = DIV_ROUND_CLOSEST(port->uartclk, div_std);
+ if (!sccnxp_update_best_err(baud, tmp_baud, &besterr)) {
+ acr = baud_std[i].acr;
+ csr = baud_std[i].csr;
+ mr0 = baud_std[i].mr0;
+ bestbaud = tmp_baud;
+ }
+ }
+
+ if (s->flags & SCCNXP_HAVE_MR0) {
+ /* Enable FIFO, set half level for TX */
+ mr0 |= MR0_FIFO | MR0_TXLVL;
+ /* Update MR0 */
+ sccnxp_port_write(port, SCCNXP_CR_REG, CR_CMD_MRPTR0);
+ sccnxp_port_write(port, SCCNXP_MR_REG, mr0);
+ }
+
+ sccnxp_port_write(port, SCCNXP_ACR_REG, acr | ACR_TIMER_MODE);
+ sccnxp_port_write(port, SCCNXP_CSR_REG, (csr << 4) | csr);
+
+ dev_dbg(port->dev, "Baudrate desired: %i, calculated: %i\n",
+ baud, bestbaud);
+}
+
+static void sccnxp_enable_irq(struct uart_port *port, int mask)
+{
+ struct sccnxp_port *s = dev_get_drvdata(port->dev);
+
+ s->imr |= mask << (port->line * 4);
+ sccnxp_write(port, SCCNXP_IMR_REG, s->imr);
+}
+
+static void sccnxp_disable_irq(struct uart_port *port, int mask)
+{
+ struct sccnxp_port *s = dev_get_drvdata(port->dev);
+
+ s->imr &= ~(mask << (port->line * 4));
+ sccnxp_write(port, SCCNXP_IMR_REG, s->imr);
+}
+
+static void sccnxp_set_bit(struct uart_port *port, int sig, int state)
+{
+ u8 bitmask;
+ struct sccnxp_port *s = dev_get_drvdata(port->dev);
+
+ if (s->pdata.mctrl_cfg[port->line] & MCTRL_MASK(sig)) {
+ bitmask = 1 << MCTRL_OBIT(s->pdata.mctrl_cfg[port->line], sig);
+ if (state)
+ sccnxp_write(port, SCCNXP_SOP_REG, bitmask);
+ else
+ sccnxp_write(port, SCCNXP_ROP_REG, bitmask);
+ }
+}
+
+static void sccnxp_handle_rx(struct uart_port *port)
+{
+ u8 sr;
+ unsigned int ch, flag;
+ struct tty_struct *tty = tty_port_tty_get(&port->state->port);
+
+ if (!tty)
+ return;
+
+ for (;;) {
+ sr = sccnxp_port_read(port, SCCNXP_SR_REG);
+ if (!(sr & SR_RXRDY))
+ break;
+ sr &= SR_PE | SR_FE | SR_OVR | SR_BRK;
+
+ ch = sccnxp_port_read(port, SCCNXP_RHR_REG);
+
+ port->icount.rx++;
+ flag = TTY_NORMAL;
+
+ if (unlikely(sr)) {
+ if (sr & SR_BRK) {
+ port->icount.brk++;
+ if (uart_handle_break(port))
+ continue;
+ } else if (sr & SR_PE)
+ port->icount.parity++;
+ else if (sr & SR_FE)
+ port->icount.frame++;
+ else if (sr & SR_OVR)
+ port->icount.overrun++;
+
+ sr &= port->read_status_mask;
+ if (sr & SR_BRK)
+ flag = TTY_BREAK;
+ else if (sr & SR_PE)
+ flag = TTY_PARITY;
+ else if (sr & SR_FE)
+ flag = TTY_FRAME;
+ else if (sr & SR_OVR)
+ flag = TTY_OVERRUN;
+ }
+
+ if (uart_handle_sysrq_char(port, ch))
+ continue;
+
+ if (sr & port->ignore_status_mask)
+ continue;
+
+ uart_insert_char(port, sr, SR_OVR, ch, flag);
+ }
+
+ tty_flip_buffer_push(tty);
+
+ tty_kref_put(tty);
+}
+
+static void sccnxp_handle_tx(struct uart_port *port)
+{
+ u8 sr;
+ struct circ_buf *xmit = &port->state->xmit;
+ struct sccnxp_port *s = dev_get_drvdata(port->dev);
+
+ if (unlikely(port->x_char)) {
+ sccnxp_port_write(port, SCCNXP_THR_REG, port->x_char);
+ port->icount.tx++;
+ port->x_char = 0;
+ return;
+ }
+
+ if (uart_circ_empty(xmit) || uart_tx_stopped(port)) {
+ /* Disable TX if FIFO is empty */
+ if (sccnxp_port_read(port, SCCNXP_SR_REG) & SR_TXEMT) {
+ sccnxp_disable_irq(port, IMR_TXRDY);
+
+ /* Set direction to input */
+ if (s->flags & SCCNXP_HAVE_IO)
+ sccnxp_set_bit(port, DIR_OP, 0);
+ }
+ return;
+ }
+
+ while (!uart_circ_empty(xmit)) {
+ sr = sccnxp_port_read(port, SCCNXP_SR_REG);
+ if (!(sr & SR_TXRDY))
+ break;
+
+ sccnxp_port_write(port, SCCNXP_THR_REG, xmit->buf[xmit->tail]);
+ xmit->tail = (xmit->tail + 1) & (UART_XMIT_SIZE - 1);
+ port->icount.tx++;
+ }
+
+ if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS)
+ uart_write_wakeup(port);
+}
+
+static irqreturn_t sccnxp_ist(int irq, void *dev_id)
+{
+ int i;
+ u8 isr;
+ struct sccnxp_port *s = (struct sccnxp_port *)dev_id;
+
+ mutex_lock(&s->sccnxp_mutex);
+
+ for (;;) {
+ isr = sccnxp_read(&s->port[0], SCCNXP_ISR_REG);
+ isr &= s->imr;
+ if (!isr)
+ break;
+
+ dev_dbg(s->port[0].dev, "IRQ status: 0x%02x\n", isr);
+
+ for (i = 0; i < s->uart.nr; i++) {
+ if (isr & ISR_RXRDY(i))
+ sccnxp_handle_rx(&s->port[i]);
+ if (isr & ISR_TXRDY(i))
+ sccnxp_handle_tx(&s->port[i]);
+ }
+ }
+
+ mutex_unlock(&s->sccnxp_mutex);
+
+ return IRQ_HANDLED;
+}
+
+static void sccnxp_start_tx(struct uart_port *port)
+{
+ struct sccnxp_port *s = dev_get_drvdata(port->dev);
+
+ mutex_lock(&s->sccnxp_mutex);
+
+ /* Set direction to output */
+ if (s->flags & SCCNXP_HAVE_IO)
+ sccnxp_set_bit(port, DIR_OP, 1);
+
+ sccnxp_enable_irq(port, IMR_TXRDY);
+
+ mutex_unlock(&s->sccnxp_mutex);
+}
+
+static void sccnxp_stop_tx(struct uart_port *port)
+{
+ /* Do nothing */
+}
+
+static void sccnxp_stop_rx(struct uart_port *port)
+{
+ struct sccnxp_port *s = dev_get_drvdata(port->dev);
+
+ mutex_lock(&s->sccnxp_mutex);
+ sccnxp_port_write(port, SCCNXP_CR_REG, CR_RX_DISABLE);
+ mutex_unlock(&s->sccnxp_mutex);
+}
+
+static unsigned int sccnxp_tx_empty(struct uart_port *port)
+{
+ u8 val;
+ struct sccnxp_port *s = dev_get_drvdata(port->dev);
+
+ mutex_lock(&s->sccnxp_mutex);
+ val = sccnxp_port_read(port, SCCNXP_SR_REG);
+ mutex_unlock(&s->sccnxp_mutex);
+
+ return (val & SR_TXEMT) ? TIOCSER_TEMT : 0;
+}
+
+static void sccnxp_enable_ms(struct uart_port *port)
+{
+ /* Do nothing */
+}
+
+static void sccnxp_set_mctrl(struct uart_port *port, unsigned int mctrl)
+{
+ struct sccnxp_port *s = dev_get_drvdata(port->dev);
+
+ if (!(s->flags & SCCNXP_HAVE_IO))
+ return;
+
+ mutex_lock(&s->sccnxp_mutex);
+
+ sccnxp_set_bit(port, DTR_OP, mctrl & TIOCM_DTR);
+ sccnxp_set_bit(port, RTS_OP, mctrl & TIOCM_RTS);
+
+ mutex_unlock(&s->sccnxp_mutex);
+}
+
+static unsigned int sccnxp_get_mctrl(struct uart_port *port)
+{
+ u8 bitmask, ipr;
+ struct sccnxp_port *s = dev_get_drvdata(port->dev);
+ unsigned int mctrl = TIOCM_DSR | TIOCM_CTS | TIOCM_CAR;
+
+ if (!(s->flags & SCCNXP_HAVE_IO))
+ return mctrl;
+
+ mutex_lock(&s->sccnxp_mutex);
+
+ ipr = ~sccnxp_read(port, SCCNXP_IPCR_REG);
+
+ if (s->pdata.mctrl_cfg[port->line] & MCTRL_MASK(DSR_IP)) {
+ bitmask = 1 << MCTRL_IBIT(s->pdata.mctrl_cfg[port->line],
+ DSR_IP);
+ mctrl &= ~TIOCM_DSR;
+ mctrl |= (ipr & bitmask) ? TIOCM_DSR : 0;
+ }
+ if (s->pdata.mctrl_cfg[port->line] & MCTRL_MASK(CTS_IP)) {
+ bitmask = 1 << MCTRL_IBIT(s->pdata.mctrl_cfg[port->line],
+ CTS_IP);
+ mctrl &= ~TIOCM_CTS;
+ mctrl |= (ipr & bitmask) ? TIOCM_CTS : 0;
+ }
+ if (s->pdata.mctrl_cfg[port->line] & MCTRL_MASK(DCD_IP)) {
+ bitmask = 1 << MCTRL_IBIT(s->pdata.mctrl_cfg[port->line],
+ DCD_IP);
+ mctrl &= ~TIOCM_CAR;
+ mctrl |= (ipr & bitmask) ? TIOCM_CAR : 0;
+ }
+ if (s->pdata.mctrl_cfg[port->line] & MCTRL_MASK(RNG_IP)) {
+ bitmask = 1 << MCTRL_IBIT(s->pdata.mctrl_cfg[port->line],
+ RNG_IP);
+ mctrl &= ~TIOCM_RNG;
+ mctrl |= (ipr & bitmask) ? TIOCM_RNG : 0;
+ }
+
+ mutex_unlock(&s->sccnxp_mutex);
+
+ return mctrl;
+}
+
+static void sccnxp_break_ctl(struct uart_port *port, int break_state)
+{
+ struct sccnxp_port *s = dev_get_drvdata(port->dev);
+
+ mutex_lock(&s->sccnxp_mutex);
+ sccnxp_port_write(port, SCCNXP_CR_REG, break_state ?
+ CR_CMD_START_BREAK : CR_CMD_STOP_BREAK);
+ mutex_unlock(&s->sccnxp_mutex);
+}
+
+static void sccnxp_set_termios(struct uart_port *port,
+ struct ktermios *termios, struct ktermios *old)
+{
+ struct sccnxp_port *s = dev_get_drvdata(port->dev);
+ u8 mr1, mr2;
+ int baud;
+
+ mutex_lock(&s->sccnxp_mutex);
+
+ /* Mask termios capabilities we don't support */
+ termios->c_cflag &= ~CMSPAR;
+ termios->c_iflag &= ~(IXON | IXOFF | IXANY);
+
+ /* Disable RX & TX, reset break condition, status and FIFOs */
+ sccnxp_port_write(port, SCCNXP_CR_REG, CR_CMD_RX_RESET |
+ CR_RX_DISABLE | CR_TX_DISABLE);
+ sccnxp_port_write(port, SCCNXP_CR_REG, CR_CMD_TX_RESET);
+ sccnxp_port_write(port, SCCNXP_CR_REG, CR_CMD_STATUS_RESET);
+ sccnxp_port_write(port, SCCNXP_CR_REG, CR_CMD_BREAK_RESET);
+
+ /* Word size */
+ switch (termios->c_cflag & CSIZE) {
+ case CS5:
+ mr1 = MR1_BITS_5;
+ break;
+ case CS6:
+ mr1 = MR1_BITS_6;
+ break;
+ case CS7:
+ mr1 = MR1_BITS_7;
+ break;
+ default:
+ case CS8:
+ mr1 = MR1_BITS_8;
+ break;
+ }
+
+ /* Parity */
+ if (termios->c_cflag & PARENB) {
+ if (termios->c_cflag & PARODD)
+ mr1 |= MR1_PAR_ODD;
+ } else
+ mr1 |= MR1_PAR_NO;
+
+ /* Stop bits */
+ mr2 = (termios->c_cflag & CSTOPB) ? MR2_STOP2 : MR2_STOP1;
+
+ /* Update desired format */
+ sccnxp_port_write(port, SCCNXP_CR_REG, CR_CMD_MRPTR1);
+ sccnxp_port_write(port, SCCNXP_MR_REG, mr1);
+ sccnxp_port_write(port, SCCNXP_MR_REG, mr2);
+
+ /* Set read status mask */
+ port->read_status_mask = SR_OVR;
+ if (termios->c_iflag & INPCK)
+ port->read_status_mask |= SR_PE | SR_FE;
+ if (termios->c_iflag & (BRKINT | PARMRK))
+ port->read_status_mask |= SR_BRK;
+
+ /* Set status ignore mask */
+ port->ignore_status_mask = 0;
+ if (termios->c_iflag & IGNBRK)
+ port->ignore_status_mask |= SR_BRK;
+ if (!(termios->c_cflag & CREAD))
+ port->ignore_status_mask |= SR_PE | SR_OVR | SR_FE | SR_BRK;
+
+ /* Setup baudrate */
+ baud = uart_get_baud_rate(port, termios, old, 50,
+ (s->flags & SCCNXP_HAVE_MR0) ?
+ 230400 : 38400);
+ sccnxp_set_baud(port, baud);
+
+ /* Update timeout according to new baud rate */
+ uart_update_timeout(port, termios->c_cflag, baud);
+
+ /* Enable RX & TX */
+ sccnxp_port_write(port, SCCNXP_CR_REG, CR_RX_ENABLE | CR_TX_ENABLE);
+
+ mutex_unlock(&s->sccnxp_mutex);
+}
+
+static int sccnxp_startup(struct uart_port *port)
+{
+ struct sccnxp_port *s = dev_get_drvdata(port->dev);
+
+ mutex_lock(&s->sccnxp_mutex);
+
+ if (s->flags & SCCNXP_HAVE_IO) {
+ /* Outputs are controlled manually */
+ sccnxp_write(port, SCCNXP_OPCR_REG, 0);
+ }
+
+ /* Reset break condition, status and FIFOs */
+ sccnxp_port_write(port, SCCNXP_CR_REG, CR_CMD_RX_RESET);
+ sccnxp_port_write(port, SCCNXP_CR_REG, CR_CMD_TX_RESET);
+ sccnxp_port_write(port, SCCNXP_CR_REG, CR_CMD_STATUS_RESET);
+ sccnxp_port_write(port, SCCNXP_CR_REG, CR_CMD_BREAK_RESET);
+
+ /* Enable RX & TX */
+ sccnxp_port_write(port, SCCNXP_CR_REG, CR_RX_ENABLE | CR_TX_ENABLE);
+
+ /* Enable RX interrupt */
+ sccnxp_enable_irq(port, IMR_RXRDY);
+
+ mutex_unlock(&s->sccnxp_mutex);
+
+ return 0;
+}
+
+static void sccnxp_shutdown(struct uart_port *port)
+{
+ struct sccnxp_port *s = dev_get_drvdata(port->dev);
+
+ mutex_lock(&s->sccnxp_mutex);
+
+ /* Disable interrupts */
+ sccnxp_disable_irq(port, IMR_TXRDY | IMR_RXRDY);
+
+ /* Disable TX & RX */
+ sccnxp_port_write(port, SCCNXP_CR_REG, CR_RX_DISABLE | CR_TX_DISABLE);
+
+ /* Leave direction to input */
+ if (s->flags & SCCNXP_HAVE_IO)
+ sccnxp_set_bit(port, DIR_OP, 0);
+
+ mutex_unlock(&s->sccnxp_mutex);
+}
+
+static const char *sccnxp_type(struct uart_port *port)
+{
+ struct sccnxp_port *s = dev_get_drvdata(port->dev);
+
+ return (port->type == PORT_SC26XX) ? s->name : NULL;
+}
+
+static void sccnxp_release_port(struct uart_port *port)
+{
+ /* Do nothing */
+}
+
+static int sccnxp_request_port(struct uart_port *port)
+{
+ /* Do nothing */
+ return 0;
+}
+
+static void sccnxp_config_port(struct uart_port *port, int flags)
+{
+ if (flags & UART_CONFIG_TYPE)
+ port->type = PORT_SC26XX;
+}
+
+static int sccnxp_verify_port(struct uart_port *port, struct serial_struct *s)
+{
+ if ((s->type == PORT_UNKNOWN) || (s->type == PORT_SC26XX))
+ return 0;
+ if (s->irq == port->irq)
+ return 0;
+
+ return -EINVAL;
+}
+
+static const struct uart_ops sccnxp_ops = {
+ .tx_empty = sccnxp_tx_empty,
+ .set_mctrl = sccnxp_set_mctrl,
+ .get_mctrl = sccnxp_get_mctrl,
+ .stop_tx = sccnxp_stop_tx,
+ .start_tx = sccnxp_start_tx,
+ .stop_rx = sccnxp_stop_rx,
+ .enable_ms = sccnxp_enable_ms,
+ .break_ctl = sccnxp_break_ctl,
+ .startup = sccnxp_startup,
+ .shutdown = sccnxp_shutdown,
+ .set_termios = sccnxp_set_termios,
+ .type = sccnxp_type,
+ .release_port = sccnxp_release_port,
+ .request_port = sccnxp_request_port,
+ .config_port = sccnxp_config_port,
+ .verify_port = sccnxp_verify_port,
+};
+
+#ifdef CONFIG_SERIAL_SCCNXP_CONSOLE
+static void sccnxp_console_putchar(struct uart_port *port, int c)
+{
+ int tryes = 100000;
+
+ while (tryes--) {
+ if (sccnxp_port_read(port, SCCNXP_SR_REG) & SR_TXRDY) {
+ sccnxp_port_write(port, SCCNXP_THR_REG, c);
+ break;
+ }
+ barrier();
+ }
+}
+
+static void sccnxp_console_write(struct console *co, const char *c, unsigned n)
+{
+ struct sccnxp_port *s = (struct sccnxp_port *)co->data;
+ struct uart_port *port = &s->port[co->index];
+
+ mutex_lock(&s->sccnxp_mutex);
+ uart_console_write(port, c, n, sccnxp_console_putchar);
+ mutex_unlock(&s->sccnxp_mutex);
+}
+
+static int sccnxp_console_setup(struct console *co, char *options)
+{
+ struct sccnxp_port *s = (struct sccnxp_port *)co->data;
+ struct uart_port *port = &s->port[(co->index > 0) ? co->index : 0];
+ int baud = 9600, bits = 8, parity = 'n', flow = 'n';
+
+ if (options)
+ uart_parse_options(options, &baud, &parity, &bits, &flow);
+
+ return uart_set_options(port, co, baud, parity, bits, flow);
+}
+#endif
+
+static int __devinit sccnxp_probe(struct platform_device *pdev)
+{
+ struct resource *res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ int chiptype = pdev->id_entry->driver_data;
+ struct sccnxp_pdata *pdata = dev_get_platdata(&pdev->dev);
+ int i, ret, fifosize, freq_min, freq_max;
+ struct sccnxp_port *s;
+ void __iomem *membase;
+
+ if (!res) {
+ dev_err(&pdev->dev, "Missing memory resource data\n");
+ return -EADDRNOTAVAIL;
+ }
+
+ dev_set_name(&pdev->dev, SCCNXP_NAME);
+
+ s = devm_kzalloc(&pdev->dev, sizeof(struct sccnxp_port), GFP_KERNEL);
+ if (!s) {
+ dev_err(&pdev->dev, "Error allocating port structure\n");
+ return -ENOMEM;
+ }
+ platform_set_drvdata(pdev, s);
+
+ mutex_init(&s->sccnxp_mutex);
+
+ /* Individual chip settings */
+ switch (chiptype) {
+ case SCCNXP_TYPE_SC2681:
+ s->name = "SC2681";
+ s->uart.nr = 2;
+ s->freq_std = 3686400;
+ s->addr_mask = 0x0f;
+ s->flags = SCCNXP_HAVE_IO;
+ fifosize = 3;
+ freq_min = 1000000;
+ freq_max = 4000000;
+ break;
+ case SCCNXP_TYPE_SC2691:
+ s->name = "SC2691";
+ s->uart.nr = 1;
+ s->freq_std = 3686400;
+ s->addr_mask = 0x07;
+ s->flags = 0;
+ fifosize = 3;
+ freq_min = 1000000;
+ freq_max = 4000000;
+ break;
+ case SCCNXP_TYPE_SC2692:
+ s->name = "SC2692";
+ s->uart.nr = 2;
+ s->freq_std = 3686400;
+ s->addr_mask = 0x0f;
+ s->flags = SCCNXP_HAVE_IO;
+ fifosize = 3;
+ freq_min = 1000000;
+ freq_max = 4000000;
+ break;
+ case SCCNXP_TYPE_SC2891:
+ s->name = "SC2891";
+ s->uart.nr = 1;
+ s->freq_std = 3686400;
+ s->addr_mask = 0x0f;
+ s->flags = SCCNXP_HAVE_IO | SCCNXP_HAVE_MR0;
+ fifosize = 16;
+ freq_min = 100000;
+ freq_max = 8000000;
+ break;
+ case SCCNXP_TYPE_SC2892:
+ s->name = "SC2892";
+ s->uart.nr = 2;
+ s->freq_std = 3686400;
+ s->addr_mask = 0x0f;
+ s->flags = SCCNXP_HAVE_IO | SCCNXP_HAVE_MR0;
+ fifosize = 16;
+ freq_min = 100000;
+ freq_max = 8000000;
+ break;
+ case SCCNXP_TYPE_SC28202:
+ s->name = "SC28202";
+ s->uart.nr = 2;
+ s->freq_std = 14745600;
+ s->addr_mask = 0x7f;
+ s->flags = SCCNXP_HAVE_IO | SCCNXP_HAVE_MR0;
+ fifosize = 256;
+ freq_min = 1000000;
+ freq_max = 50000000;
+ break;
+ case SCCNXP_TYPE_SC68681:
+ s->name = "SC68681";
+ s->uart.nr = 2;
+ s->freq_std = 3686400;
+ s->addr_mask = 0x0f;
+ s->flags = SCCNXP_HAVE_IO;
+ fifosize = 3;
+ freq_min = 1000000;
+ freq_max = 4000000;
+ break;
+ case SCCNXP_TYPE_SC68692:
+ s->name = "SC68692";
+ s->uart.nr = 2;
+ s->freq_std = 3686400;
+ s->addr_mask = 0x0f;
+ s->flags = SCCNXP_HAVE_IO;
+ fifosize = 3;
+ freq_min = 1000000;
+ freq_max = 4000000;
+ break;
+ default:
+ dev_err(&pdev->dev, "Unsupported chip type %i\n", chiptype);
+ ret = -ENOTSUPP;
+ goto err_out;
+ }
+
+ if (!pdata) {
+ dev_warn(&pdev->dev,
+ "No platform data supplied, using defaults\n");
+ s->pdata.frequency = s->freq_std;
+ } else
+ memcpy(&s->pdata, pdata, sizeof(struct sccnxp_pdata));
+
+ s->irq = platform_get_irq(pdev, 0);
+ if (s->irq <= 0) {
+ dev_err(&pdev->dev, "Missing irq resource data\n");
+ ret = -ENXIO;
+ goto err_out;
+ }
+
+ /* Check input frequency */
+ if ((s->pdata.frequency < freq_min) ||
+ (s->pdata.frequency > freq_max)) {
+ dev_err(&pdev->dev, "Frequency out of bounds\n");
+ ret = -EINVAL;
+ goto err_out;
+ }
+
+ membase = devm_request_and_ioremap(&pdev->dev, res);
+ if (!membase) {
+ dev_err(&pdev->dev, "Failed to ioremap\n");
+ ret = -EIO;
+ goto err_out;
+ }
+
+ s->uart.owner = THIS_MODULE;
+ s->uart.dev_name = "ttySC";
+ s->uart.major = SCCNXP_MAJOR;
+ s->uart.minor = SCCNXP_MINOR;
+#ifdef CONFIG_SERIAL_SCCNXP_CONSOLE
+ s->uart.cons = &s->console;
+ s->uart.cons->device = uart_console_device;
+ s->uart.cons->write = sccnxp_console_write;
+ s->uart.cons->setup = sccnxp_console_setup;
+ s->uart.cons->flags = CON_PRINTBUFFER;
+ s->uart.cons->index = -1;
+ s->uart.cons->data = s;
+ strcpy(s->uart.cons->name, "ttySC");
+#endif
+ ret = uart_register_driver(&s->uart);
+ if (ret) {
+ dev_err(&pdev->dev, "Registering UART driver failed\n");
+ goto err_out;
+ }
+
+ for (i = 0; i < s->uart.nr; i++) {
+ s->port[i].line = i;
+ s->port[i].dev = &pdev->dev;
+ s->port[i].irq = s->irq;
+ s->port[i].type = PORT_SC26XX;
+ s->port[i].fifosize = fifosize;
+ s->port[i].flags = UPF_SKIP_TEST | UPF_FIXED_TYPE;
+ s->port[i].iotype = UPIO_MEM;
+ s->port[i].mapbase = res->start;
+ s->port[i].membase = membase;
+ s->port[i].regshift = s->pdata.reg_shift;
+ s->port[i].uartclk = s->pdata.frequency;
+ s->port[i].ops = &sccnxp_ops;
+ uart_add_one_port(&s->uart, &s->port[i]);
+ /* Set direction to input */
+ if (s->flags & SCCNXP_HAVE_IO)
+ sccnxp_set_bit(&s->port[i], DIR_OP, 0);
+ }
+
+ /* Disable interrupts */
+ s->imr = 0;
+ sccnxp_write(&s->port[0], SCCNXP_IMR_REG, 0);
+
+ /* Board specific configure */
+ if (s->pdata.init)
+ s->pdata.init();
+
+ ret = devm_request_threaded_irq(&pdev->dev, s->irq, NULL, sccnxp_ist,
+ IRQF_TRIGGER_FALLING | IRQF_ONESHOT,
+ dev_name(&pdev->dev), s);
+ if (!ret)
+ return 0;
+
+ dev_err(&pdev->dev, "Unable to reguest IRQ %i\n", s->irq);
+
+err_out:
+ platform_set_drvdata(pdev, NULL);
+
+ return ret;
+}
+
+static int __devexit sccnxp_remove(struct platform_device *pdev)
+{
+ int i;
+ struct sccnxp_port *s = platform_get_drvdata(pdev);
+
+ devm_free_irq(&pdev->dev, s->irq, s);
+
+ for (i = 0; i < s->uart.nr; i++)
+ uart_remove_one_port(&s->uart, &s->port[i]);
+
+ uart_unregister_driver(&s->uart);
+ platform_set_drvdata(pdev, NULL);
+
+ if (s->pdata.exit)
+ s->pdata.exit();
+
+ return 0;
+}
+
+static const struct platform_device_id sccnxp_id_table[] = {
+ { "sc2681", SCCNXP_TYPE_SC2681 },
+ { "sc2691", SCCNXP_TYPE_SC2691 },
+ { "sc2692", SCCNXP_TYPE_SC2692 },
+ { "sc2891", SCCNXP_TYPE_SC2891 },
+ { "sc2892", SCCNXP_TYPE_SC2892 },
+ { "sc28202", SCCNXP_TYPE_SC28202 },
+ { "sc68681", SCCNXP_TYPE_SC68681 },
+ { "sc68692", SCCNXP_TYPE_SC68692 },
+};
+MODULE_DEVICE_TABLE(platform, sccnxp_id_table);
+
+static struct platform_driver sccnxp_uart_driver = {
+ .driver = {
+ .name = SCCNXP_NAME,
+ .owner = THIS_MODULE,
+ },
+ .probe = sccnxp_probe,
+ .remove = __devexit_p(sccnxp_remove),
+ .id_table = sccnxp_id_table,
+};
+module_platform_driver(sccnxp_uart_driver);
+
+MODULE_LICENSE("GPL v2");
+MODULE_AUTHOR("Alexander Shiyan <shc_work@mail.ru>");
+MODULE_DESCRIPTION("SCCNXP serial driver");
diff --git a/drivers/tty/serial/serial_core.c b/drivers/tty/serial/serial_core.c
index a21dc8e3b7c..046279ce3e8 100644
--- a/drivers/tty/serial/serial_core.c
+++ b/drivers/tty/serial/serial_core.c
@@ -159,7 +159,7 @@ static int uart_port_startup(struct tty_struct *tty, struct uart_state *state,
retval = uport->ops->startup(uport);
if (retval == 0) {
if (uart_console(uport) && uport->cons->cflag) {
- tty->termios->c_cflag = uport->cons->cflag;
+ tty->termios.c_cflag = uport->cons->cflag;
uport->cons->cflag = 0;
}
/*
@@ -172,11 +172,11 @@ static int uart_port_startup(struct tty_struct *tty, struct uart_state *state,
* Setup the RTS and DTR signals once the
* port is open and ready to respond.
*/
- if (tty->termios->c_cflag & CBAUD)
+ if (tty->termios.c_cflag & CBAUD)
uart_set_mctrl(uport, TIOCM_RTS | TIOCM_DTR);
}
- if (port->flags & ASYNC_CTS_FLOW) {
+ if (tty_port_cts_enabled(port)) {
spin_lock_irq(&uport->lock);
if (!(uport->ops->get_mctrl(uport) & TIOCM_CTS))
tty->hw_stopped = 1;
@@ -240,7 +240,7 @@ static void uart_shutdown(struct tty_struct *tty, struct uart_state *state)
/*
* Turn off DTR and RTS early.
*/
- if (!tty || (tty->termios->c_cflag & HUPCL))
+ if (!tty || (tty->termios.c_cflag & HUPCL))
uart_clear_mctrl(uport, TIOCM_DTR | TIOCM_RTS);
uart_port_shutdown(port);
@@ -440,10 +440,10 @@ static void uart_change_speed(struct tty_struct *tty, struct uart_state *state,
* If we have no tty, termios, or the port does not exist,
* then we can't set the parameters for this port.
*/
- if (!tty || !tty->termios || uport->type == PORT_UNKNOWN)
+ if (!tty || uport->type == PORT_UNKNOWN)
return;
- termios = tty->termios;
+ termios = &tty->termios;
/*
* Set flags based on termios cflag
@@ -614,7 +614,7 @@ static void uart_throttle(struct tty_struct *tty)
if (I_IXOFF(tty))
uart_send_xchar(tty, STOP_CHAR(tty));
- if (tty->termios->c_cflag & CRTSCTS)
+ if (tty->termios.c_cflag & CRTSCTS)
uart_clear_mctrl(state->uart_port, TIOCM_RTS);
}
@@ -630,42 +630,48 @@ static void uart_unthrottle(struct tty_struct *tty)
uart_send_xchar(tty, START_CHAR(tty));
}
- if (tty->termios->c_cflag & CRTSCTS)
+ if (tty->termios.c_cflag & CRTSCTS)
uart_set_mctrl(port, TIOCM_RTS);
}
-static int uart_get_info(struct uart_state *state,
- struct serial_struct __user *retinfo)
+static void uart_get_info(struct tty_port *port,
+ struct uart_state *state,
+ struct serial_struct *retinfo)
{
struct uart_port *uport = state->uart_port;
- struct tty_port *port = &state->port;
- struct serial_struct tmp;
-
- memset(&tmp, 0, sizeof(tmp));
- /* Ensure the state we copy is consistent and no hardware changes
- occur as we go */
- mutex_lock(&port->mutex);
+ memset(retinfo, 0, sizeof(*retinfo));
- tmp.type = uport->type;
- tmp.line = uport->line;
- tmp.port = uport->iobase;
+ retinfo->type = uport->type;
+ retinfo->line = uport->line;
+ retinfo->port = uport->iobase;
if (HIGH_BITS_OFFSET)
- tmp.port_high = (long) uport->iobase >> HIGH_BITS_OFFSET;
- tmp.irq = uport->irq;
- tmp.flags = uport->flags;
- tmp.xmit_fifo_size = uport->fifosize;
- tmp.baud_base = uport->uartclk / 16;
- tmp.close_delay = jiffies_to_msecs(port->close_delay) / 10;
- tmp.closing_wait = port->closing_wait == ASYNC_CLOSING_WAIT_NONE ?
+ retinfo->port_high = (long) uport->iobase >> HIGH_BITS_OFFSET;
+ retinfo->irq = uport->irq;
+ retinfo->flags = uport->flags;
+ retinfo->xmit_fifo_size = uport->fifosize;
+ retinfo->baud_base = uport->uartclk / 16;
+ retinfo->close_delay = jiffies_to_msecs(port->close_delay) / 10;
+ retinfo->closing_wait = port->closing_wait == ASYNC_CLOSING_WAIT_NONE ?
ASYNC_CLOSING_WAIT_NONE :
jiffies_to_msecs(port->closing_wait) / 10;
- tmp.custom_divisor = uport->custom_divisor;
- tmp.hub6 = uport->hub6;
- tmp.io_type = uport->iotype;
- tmp.iomem_reg_shift = uport->regshift;
- tmp.iomem_base = (void *)(unsigned long)uport->mapbase;
+ retinfo->custom_divisor = uport->custom_divisor;
+ retinfo->hub6 = uport->hub6;
+ retinfo->io_type = uport->iotype;
+ retinfo->iomem_reg_shift = uport->regshift;
+ retinfo->iomem_base = (void *)(unsigned long)uport->mapbase;
+}
+static int uart_get_info_user(struct uart_state *state,
+ struct serial_struct __user *retinfo)
+{
+ struct tty_port *port = &state->port;
+ struct serial_struct tmp;
+
+ /* Ensure the state we copy is consistent and no hardware changes
+ occur as we go */
+ mutex_lock(&port->mutex);
+ uart_get_info(port, state, &tmp);
mutex_unlock(&port->mutex);
if (copy_to_user(retinfo, &tmp, sizeof(*retinfo)))
@@ -673,42 +679,30 @@ static int uart_get_info(struct uart_state *state,
return 0;
}
-static int uart_set_info(struct tty_struct *tty, struct uart_state *state,
- struct serial_struct __user *newinfo)
+static int uart_set_info(struct tty_struct *tty, struct tty_port *port,
+ struct uart_state *state,
+ struct serial_struct *new_info)
{
- struct serial_struct new_serial;
struct uart_port *uport = state->uart_port;
- struct tty_port *port = &state->port;
unsigned long new_port;
unsigned int change_irq, change_port, closing_wait;
unsigned int old_custom_divisor, close_delay;
upf_t old_flags, new_flags;
int retval = 0;
- if (copy_from_user(&new_serial, newinfo, sizeof(new_serial)))
- return -EFAULT;
-
- new_port = new_serial.port;
+ new_port = new_info->port;
if (HIGH_BITS_OFFSET)
- new_port += (unsigned long) new_serial.port_high << HIGH_BITS_OFFSET;
+ new_port += (unsigned long) new_info->port_high << HIGH_BITS_OFFSET;
- new_serial.irq = irq_canonicalize(new_serial.irq);
- close_delay = msecs_to_jiffies(new_serial.close_delay * 10);
- closing_wait = new_serial.closing_wait == ASYNC_CLOSING_WAIT_NONE ?
+ new_info->irq = irq_canonicalize(new_info->irq);
+ close_delay = msecs_to_jiffies(new_info->close_delay * 10);
+ closing_wait = new_info->closing_wait == ASYNC_CLOSING_WAIT_NONE ?
ASYNC_CLOSING_WAIT_NONE :
- msecs_to_jiffies(new_serial.closing_wait * 10);
+ msecs_to_jiffies(new_info->closing_wait * 10);
- /*
- * This semaphore protects port->count. It is also
- * very useful to prevent opens. Also, take the
- * port configuration semaphore to make sure that a
- * module insertion/removal doesn't change anything
- * under us.
- */
- mutex_lock(&port->mutex);
change_irq = !(uport->flags & UPF_FIXED_PORT)
- && new_serial.irq != uport->irq;
+ && new_info->irq != uport->irq;
/*
* Since changing the 'type' of the port changes its resource
@@ -717,29 +711,29 @@ static int uart_set_info(struct tty_struct *tty, struct uart_state *state,
*/
change_port = !(uport->flags & UPF_FIXED_PORT)
&& (new_port != uport->iobase ||
- (unsigned long)new_serial.iomem_base != uport->mapbase ||
- new_serial.hub6 != uport->hub6 ||
- new_serial.io_type != uport->iotype ||
- new_serial.iomem_reg_shift != uport->regshift ||
- new_serial.type != uport->type);
+ (unsigned long)new_info->iomem_base != uport->mapbase ||
+ new_info->hub6 != uport->hub6 ||
+ new_info->io_type != uport->iotype ||
+ new_info->iomem_reg_shift != uport->regshift ||
+ new_info->type != uport->type);
old_flags = uport->flags;
- new_flags = new_serial.flags;
+ new_flags = new_info->flags;
old_custom_divisor = uport->custom_divisor;
if (!capable(CAP_SYS_ADMIN)) {
retval = -EPERM;
if (change_irq || change_port ||
- (new_serial.baud_base != uport->uartclk / 16) ||
+ (new_info->baud_base != uport->uartclk / 16) ||
(close_delay != port->close_delay) ||
(closing_wait != port->closing_wait) ||
- (new_serial.xmit_fifo_size &&
- new_serial.xmit_fifo_size != uport->fifosize) ||
+ (new_info->xmit_fifo_size &&
+ new_info->xmit_fifo_size != uport->fifosize) ||
(((new_flags ^ old_flags) & ~UPF_USR_MASK) != 0))
goto exit;
uport->flags = ((uport->flags & ~UPF_USR_MASK) |
(new_flags & UPF_USR_MASK));
- uport->custom_divisor = new_serial.custom_divisor;
+ uport->custom_divisor = new_info->custom_divisor;
goto check_and_exit;
}
@@ -747,10 +741,10 @@ static int uart_set_info(struct tty_struct *tty, struct uart_state *state,
* Ask the low level driver to verify the settings.
*/
if (uport->ops->verify_port)
- retval = uport->ops->verify_port(uport, &new_serial);
+ retval = uport->ops->verify_port(uport, new_info);
- if ((new_serial.irq >= nr_irqs) || (new_serial.irq < 0) ||
- (new_serial.baud_base < 9600))
+ if ((new_info->irq >= nr_irqs) || (new_info->irq < 0) ||
+ (new_info->baud_base < 9600))
retval = -EINVAL;
if (retval)
@@ -790,11 +784,11 @@ static int uart_set_info(struct tty_struct *tty, struct uart_state *state,
uport->ops->release_port(uport);
uport->iobase = new_port;
- uport->type = new_serial.type;
- uport->hub6 = new_serial.hub6;
- uport->iotype = new_serial.io_type;
- uport->regshift = new_serial.iomem_reg_shift;
- uport->mapbase = (unsigned long)new_serial.iomem_base;
+ uport->type = new_info->type;
+ uport->hub6 = new_info->hub6;
+ uport->iotype = new_info->io_type;
+ uport->regshift = new_info->iomem_reg_shift;
+ uport->mapbase = (unsigned long)new_info->iomem_base;
/*
* Claim and map the new regions
@@ -835,16 +829,16 @@ static int uart_set_info(struct tty_struct *tty, struct uart_state *state,
}
if (change_irq)
- uport->irq = new_serial.irq;
+ uport->irq = new_info->irq;
if (!(uport->flags & UPF_FIXED_PORT))
- uport->uartclk = new_serial.baud_base * 16;
+ uport->uartclk = new_info->baud_base * 16;
uport->flags = (uport->flags & ~UPF_CHANGE_MASK) |
(new_flags & UPF_CHANGE_MASK);
- uport->custom_divisor = new_serial.custom_divisor;
+ uport->custom_divisor = new_info->custom_divisor;
port->close_delay = close_delay;
port->closing_wait = closing_wait;
- if (new_serial.xmit_fifo_size)
- uport->fifosize = new_serial.xmit_fifo_size;
+ if (new_info->xmit_fifo_size)
+ uport->fifosize = new_info->xmit_fifo_size;
if (port->tty)
port->tty->low_latency =
(uport->flags & UPF_LOW_LATENCY) ? 1 : 0;
@@ -873,6 +867,28 @@ static int uart_set_info(struct tty_struct *tty, struct uart_state *state,
} else
retval = uart_startup(tty, state, 1);
exit:
+ return retval;
+}
+
+static int uart_set_info_user(struct tty_struct *tty, struct uart_state *state,
+ struct serial_struct __user *newinfo)
+{
+ struct serial_struct new_serial;
+ struct tty_port *port = &state->port;
+ int retval;
+
+ if (copy_from_user(&new_serial, newinfo, sizeof(new_serial)))
+ return -EFAULT;
+
+ /*
+ * This semaphore protects port->count. It is also
+ * very useful to prevent opens. Also, take the
+ * port configuration semaphore to make sure that a
+ * module insertion/removal doesn't change anything
+ * under us.
+ */
+ mutex_lock(&port->mutex);
+ retval = uart_set_info(tty, port, state, &new_serial);
mutex_unlock(&port->mutex);
return retval;
}
@@ -1115,11 +1131,11 @@ uart_ioctl(struct tty_struct *tty, unsigned int cmd,
*/
switch (cmd) {
case TIOCGSERIAL:
- ret = uart_get_info(state, uarg);
+ ret = uart_get_info_user(state, uarg);
break;
case TIOCSSERIAL:
- ret = uart_set_info(tty, state, uarg);
+ ret = uart_set_info_user(tty, state, uarg);
break;
case TIOCSERCONFIG:
@@ -1187,7 +1203,7 @@ static void uart_set_ldisc(struct tty_struct *tty)
struct uart_port *uport = state->uart_port;
if (uport->ops->set_ldisc)
- uport->ops->set_ldisc(uport, tty->termios->c_line);
+ uport->ops->set_ldisc(uport, tty->termios.c_line);
}
static void uart_set_termios(struct tty_struct *tty,
@@ -1195,7 +1211,7 @@ static void uart_set_termios(struct tty_struct *tty,
{
struct uart_state *state = tty->driver_data;
unsigned long flags;
- unsigned int cflag = tty->termios->c_cflag;
+ unsigned int cflag = tty->termios.c_cflag;
/*
@@ -1206,9 +1222,9 @@ static void uart_set_termios(struct tty_struct *tty,
*/
#define RELEVANT_IFLAG(iflag) ((iflag) & (IGNBRK|BRKINT|IGNPAR|PARMRK|INPCK))
if ((cflag ^ old_termios->c_cflag) == 0 &&
- tty->termios->c_ospeed == old_termios->c_ospeed &&
- tty->termios->c_ispeed == old_termios->c_ispeed &&
- RELEVANT_IFLAG(tty->termios->c_iflag ^ old_termios->c_iflag) == 0) {
+ tty->termios.c_ospeed == old_termios->c_ospeed &&
+ tty->termios.c_ispeed == old_termios->c_ispeed &&
+ RELEVANT_IFLAG(tty->termios.c_iflag ^ old_termios->c_iflag) == 0) {
return;
}
@@ -1960,8 +1976,8 @@ int uart_resume_port(struct uart_driver *drv, struct uart_port *uport)
/*
* If that's unset, use the tty termios setting.
*/
- if (port->tty && port->tty->termios && termios.c_cflag == 0)
- termios = *(port->tty->termios);
+ if (port->tty && termios.c_cflag == 0)
+ termios = port->tty->termios;
if (console_suspend_enabled)
uart_change_pm(state, 0);
@@ -2293,6 +2309,36 @@ struct tty_driver *uart_console_device(struct console *co, int *index)
return p->tty_driver;
}
+static ssize_t uart_get_attr_uartclk(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ int ret;
+ struct tty_port *port = dev_get_drvdata(dev);
+ struct uart_state *state = container_of(port, struct uart_state, port);
+
+ mutex_lock(&state->port.mutex);
+ ret = snprintf(buf, PAGE_SIZE, "%d\n", state->uart_port->uartclk);
+ mutex_unlock(&state->port.mutex);
+
+ return ret;
+}
+
+static DEVICE_ATTR(uartclk, S_IRUSR | S_IRGRP, uart_get_attr_uartclk, NULL);
+
+static struct attribute *tty_dev_attrs[] = {
+ &dev_attr_uartclk.attr,
+ NULL,
+ };
+
+static const struct attribute_group tty_dev_attr_group = {
+ .attrs = tty_dev_attrs,
+ };
+
+static const struct attribute_group *tty_dev_attr_groups[] = {
+ &tty_dev_attr_group,
+ NULL
+ };
+
/**
* uart_add_one_port - attach a driver-defined port structure
* @drv: pointer to the uart low level driver structure for this port
@@ -2346,7 +2392,8 @@ int uart_add_one_port(struct uart_driver *drv, struct uart_port *uport)
* Register the port whether it's detected or not. This allows
* setserial to be used to alter this ports parameters.
*/
- tty_dev = tty_register_device(drv->tty_driver, uport->line, uport->dev);
+ tty_dev = tty_port_register_device_attr(port, drv->tty_driver,
+ uport->line, uport->dev, port, tty_dev_attr_groups);
if (likely(!IS_ERR(tty_dev))) {
device_set_wakeup_capable(tty_dev, 1);
} else {
@@ -2492,7 +2539,7 @@ void uart_handle_cts_change(struct uart_port *uport, unsigned int status)
uport->icount.cts++;
- if (port->flags & ASYNC_CTS_FLOW) {
+ if (tty_port_cts_enabled(port)) {
if (tty->hw_stopped) {
if (status) {
tty->hw_stopped = 0;
diff --git a/drivers/tty/serial/sirfsoc_uart.c b/drivers/tty/serial/sirfsoc_uart.c
index 5b3eda2024f..a9e2bd1ab53 100644
--- a/drivers/tty/serial/sirfsoc_uart.c
+++ b/drivers/tty/serial/sirfsoc_uart.c
@@ -668,7 +668,7 @@ int sirfsoc_uart_probe(struct platform_device *pdev)
if (res == NULL) {
dev_err(&pdev->dev, "Insufficient resources.\n");
ret = -EFAULT;
- goto irq_err;
+ goto err;
}
port->irq = res->start;
@@ -676,7 +676,7 @@ int sirfsoc_uart_probe(struct platform_device *pdev)
sirfport->p = pinctrl_get_select_default(&pdev->dev);
ret = IS_ERR(sirfport->p);
if (ret)
- goto pin_err;
+ goto err;
}
port->ops = &sirfsoc_uart_ops;
@@ -695,9 +695,6 @@ port_err:
platform_set_drvdata(pdev, NULL);
if (sirfport->hw_flow_ctrl)
pinctrl_put(sirfport->p);
-pin_err:
-irq_err:
- devm_iounmap(&pdev->dev, port->membase);
err:
return ret;
}
@@ -709,7 +706,6 @@ static int sirfsoc_uart_remove(struct platform_device *pdev)
platform_set_drvdata(pdev, NULL);
if (sirfport->hw_flow_ctrl)
pinctrl_put(sirfport->p);
- devm_iounmap(&pdev->dev, port->membase);
uart_remove_one_port(&sirfsoc_uart_drv, port);
return 0;
}
diff --git a/drivers/tty/serial/sunsu.c b/drivers/tty/serial/sunsu.c
index 675303b8ed8..b97913dcdbf 100644
--- a/drivers/tty/serial/sunsu.c
+++ b/drivers/tty/serial/sunsu.c
@@ -58,10 +58,16 @@
enum su_type { SU_PORT_NONE, SU_PORT_MS, SU_PORT_KBD, SU_PORT_PORT };
static char *su_typev[] = { "su(???)", "su(mouse)", "su(kbd)", "su(serial)" };
+struct serial_uart_config {
+ char *name;
+ int dfl_xmit_fifo_size;
+ int flags;
+};
+
/*
* Here we define the default xmit fifo size used for each type of UART.
*/
-static const struct serial_uart_config uart_config[PORT_MAX_8250+1] = {
+static const struct serial_uart_config uart_config[] = {
{ "unknown", 1, 0 },
{ "8250", 1, 0 },
{ "16450", 1, 0 },