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-rw-r--r--drivers/tty/serial/Kconfig10
-rw-r--r--drivers/tty/serial/ifx6x60.c2
-rw-r--r--drivers/tty/serial/imx.c30
-rw-r--r--drivers/tty/serial/mxs-auart.c14
-rw-r--r--drivers/tty/serial/pmac_zilog.c12
5 files changed, 39 insertions, 29 deletions
diff --git a/drivers/tty/serial/Kconfig b/drivers/tty/serial/Kconfig
index 070b442c1f8..4720b4ba096 100644
--- a/drivers/tty/serial/Kconfig
+++ b/drivers/tty/serial/Kconfig
@@ -160,10 +160,12 @@ config SERIAL_KS8695_CONSOLE
config SERIAL_CLPS711X
tristate "CLPS711X serial port support"
- depends on ARM && ARCH_CLPS711X
+ depends on ARCH_CLPS711X
select SERIAL_CORE
+ default y
help
- ::: To be written :::
+ This enables the driver for the on-chip UARTs of the Cirrus
+ Logic EP711x/EP721x/EP731x processors.
config SERIAL_CLPS711X_CONSOLE
bool "Support for console on CLPS711X serial port"
@@ -173,9 +175,7 @@ config SERIAL_CLPS711X_CONSOLE
Even if you say Y here, the currently visible virtual console
(/dev/tty0) will still be used as the system console by default, but
you can alter that using a kernel command line option such as
- "console=ttyCL1". (Try "man bootparam" or see the documentation of
- your boot loader (lilo or loadlin) about how to pass options to the
- kernel at boot time.)
+ "console=ttyCL1".
config SERIAL_SAMSUNG
tristate "Samsung SoC serial support"
diff --git a/drivers/tty/serial/ifx6x60.c b/drivers/tty/serial/ifx6x60.c
index 144cd3987d4..3ad079ffd04 100644
--- a/drivers/tty/serial/ifx6x60.c
+++ b/drivers/tty/serial/ifx6x60.c
@@ -1331,7 +1331,7 @@ static const struct spi_device_id ifx_id_table[] = {
MODULE_DEVICE_TABLE(spi, ifx_id_table);
/* spi operations */
-static const struct spi_driver ifx_spi_driver = {
+static struct spi_driver ifx_spi_driver = {
.driver = {
.name = DRVNAME,
.pm = &ifx_spi_pm,
diff --git a/drivers/tty/serial/imx.c b/drivers/tty/serial/imx.c
index d5c689d6217..e309e8b0aab 100644
--- a/drivers/tty/serial/imx.c
+++ b/drivers/tty/serial/imx.c
@@ -132,6 +132,7 @@
#define UCR4_OREN (1<<1) /* Receiver overrun interrupt enable */
#define UCR4_DREN (1<<0) /* Recv data ready interrupt enable */
#define UFCR_RXTL_SHF 0 /* Receiver trigger level shift */
+#define UFCR_DCEDTE (1<<6) /* DCE/DTE mode select */
#define UFCR_RFDIV (7<<7) /* Reference freq divider mask */
#define UFCR_RFDIV_REG(x) (((x) < 7 ? 6 - (x) : 6) << 7)
#define UFCR_TXTL_SHF 10 /* Transmitter trigger level shift */
@@ -667,22 +668,11 @@ static void imx_break_ctl(struct uart_port *port, int break_state)
static int imx_setup_ufcr(struct imx_port *sport, unsigned int mode)
{
unsigned int val;
- unsigned int ufcr_rfdiv;
-
- /* set receiver / transmitter trigger level.
- * RFDIV is set such way to satisfy requested uartclk value
- */
- val = TXTL << 10 | RXTL;
- ufcr_rfdiv = (clk_get_rate(sport->clk_per) + sport->port.uartclk / 2)
- / sport->port.uartclk;
-
- if(!ufcr_rfdiv)
- ufcr_rfdiv = 1;
-
- val |= UFCR_RFDIV_REG(ufcr_rfdiv);
+ /* set receiver / transmitter trigger level */
+ val = readl(sport->port.membase + UFCR) & (UFCR_RFDIV | UFCR_DCEDTE);
+ val |= TXTL << UFCR_TXTL_SHF | RXTL;
writel(val, sport->port.membase + UFCR);
-
return 0;
}
@@ -754,6 +744,7 @@ static int imx_startup(struct uart_port *port)
}
}
+ spin_lock_irqsave(&sport->port.lock, flags);
/*
* Finally, clear and enable interrupts
*/
@@ -807,7 +798,6 @@ static int imx_startup(struct uart_port *port)
/*
* Enable modem status interrupts
*/
- spin_lock_irqsave(&sport->port.lock,flags);
imx_enable_ms(&sport->port);
spin_unlock_irqrestore(&sport->port.lock,flags);
@@ -837,10 +827,13 @@ static void imx_shutdown(struct uart_port *port)
{
struct imx_port *sport = (struct imx_port *)port;
unsigned long temp;
+ unsigned long flags;
+ spin_lock_irqsave(&sport->port.lock, flags);
temp = readl(sport->port.membase + UCR2);
temp &= ~(UCR2_TXEN);
writel(temp, sport->port.membase + UCR2);
+ spin_unlock_irqrestore(&sport->port.lock, flags);
if (USE_IRDA(sport)) {
struct imxuart_platform_data *pdata;
@@ -869,12 +862,14 @@ static void imx_shutdown(struct uart_port *port)
* Disable all interrupts, port and break condition.
*/
+ spin_lock_irqsave(&sport->port.lock, flags);
temp = readl(sport->port.membase + UCR1);
temp &= ~(UCR1_TXMPTYEN | UCR1_RRDYEN | UCR1_RTSDEN | UCR1_UARTEN);
if (USE_IRDA(sport))
temp &= ~(UCR1_IREN);
writel(temp, sport->port.membase + UCR1);
+ spin_unlock_irqrestore(&sport->port.lock, flags);
}
static void
@@ -1217,6 +1212,9 @@ imx_console_write(struct console *co, const char *s, unsigned int count)
struct imx_port *sport = imx_ports[co->index];
struct imx_port_ucrs old_ucr;
unsigned int ucr1;
+ unsigned long flags;
+
+ spin_lock_irqsave(&sport->port.lock, flags);
/*
* First, save UCR1/2/3 and then disable interrupts
@@ -1242,6 +1240,8 @@ imx_console_write(struct console *co, const char *s, unsigned int count)
while (!(readl(sport->port.membase + USR2) & USR2_TXDC));
imx_port_ucrs_restore(&sport->port, &old_ucr);
+
+ spin_unlock_irqrestore(&sport->port.lock, flags);
}
/*
diff --git a/drivers/tty/serial/mxs-auart.c b/drivers/tty/serial/mxs-auart.c
index 2e341b81ff8..3a667eed63d 100644
--- a/drivers/tty/serial/mxs-auart.c
+++ b/drivers/tty/serial/mxs-auart.c
@@ -73,6 +73,7 @@
#define AUART_CTRL0_CLKGATE (1 << 30)
#define AUART_CTRL2_CTSEN (1 << 15)
+#define AUART_CTRL2_RTSEN (1 << 14)
#define AUART_CTRL2_RTS (1 << 11)
#define AUART_CTRL2_RXE (1 << 9)
#define AUART_CTRL2_TXE (1 << 8)
@@ -259,9 +260,12 @@ static void mxs_auart_set_mctrl(struct uart_port *u, unsigned mctrl)
u32 ctrl = readl(u->membase + AUART_CTRL2);
- ctrl &= ~AUART_CTRL2_RTS;
- if (mctrl & TIOCM_RTS)
- ctrl |= AUART_CTRL2_RTS;
+ ctrl &= ~AUART_CTRL2_RTSEN;
+ if (mctrl & TIOCM_RTS) {
+ if (u->state->port.flags & ASYNC_CTS_FLOW)
+ ctrl |= AUART_CTRL2_RTSEN;
+ }
+
s->ctrl = mctrl;
writel(ctrl, u->membase + AUART_CTRL2);
}
@@ -359,9 +363,9 @@ static void mxs_auart_settermios(struct uart_port *u,
/* figure out the hardware flow control settings */
if (cflag & CRTSCTS)
- ctrl2 |= AUART_CTRL2_CTSEN;
+ ctrl2 |= AUART_CTRL2_CTSEN | AUART_CTRL2_RTSEN;
else
- ctrl2 &= ~AUART_CTRL2_CTSEN;
+ ctrl2 &= ~(AUART_CTRL2_CTSEN | AUART_CTRL2_RTSEN);
/* set baud rate */
baud = uart_get_baud_rate(u, termios, old, 0, u->uartclk);
diff --git a/drivers/tty/serial/pmac_zilog.c b/drivers/tty/serial/pmac_zilog.c
index 654755a990d..333c8d012b0 100644
--- a/drivers/tty/serial/pmac_zilog.c
+++ b/drivers/tty/serial/pmac_zilog.c
@@ -1348,10 +1348,16 @@ static int pmz_verify_port(struct uart_port *port, struct serial_struct *ser)
static int pmz_poll_get_char(struct uart_port *port)
{
struct uart_pmac_port *uap = (struct uart_pmac_port *)port;
+ int tries = 2;
- while ((read_zsreg(uap, R0) & Rx_CH_AV) == 0)
- udelay(5);
- return read_zsdata(uap);
+ while (tries) {
+ if ((read_zsreg(uap, R0) & Rx_CH_AV) != 0)
+ return read_zsdata(uap);
+ if (tries--)
+ udelay(5);
+ }
+
+ return NO_POLL_CHAR;
}
static void pmz_poll_put_char(struct uart_port *port, unsigned char c)
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-12-20 08:06:33 +0000