diff options
Diffstat (limited to 'drivers/serial/atmel_serial.c')
| -rw-r--r-- | drivers/serial/atmel_serial.c | 496 |
1 files changed, 248 insertions, 248 deletions
diff --git a/drivers/serial/atmel_serial.c b/drivers/serial/atmel_serial.c index 65972ce63c7..7397d5df6d9 100644 --- a/drivers/serial/atmel_serial.c +++ b/drivers/serial/atmel_serial.c @@ -1,7 +1,7 @@ /* * linux/drivers/char/at91_serial.c * - * Driver for Atmel AT91RM9200 Serial ports + * Driver for Atmel AT91 / AT32 Serial ports * Copyright (C) 2003 Rick Bronson * * Based on drivers/char/serial_sa1100.c, by Deep Blue Solutions Ltd. @@ -55,51 +55,51 @@ /* Use device name ttyAT, major 204 and minor 154-169. This is necessary if we * should coexist with the 8250 driver, such as if we have an external 16C550 * UART. */ -#define SERIAL_AT91_MAJOR 204 +#define SERIAL_ATMEL_MAJOR 204 #define MINOR_START 154 -#define AT91_DEVICENAME "ttyAT" +#define ATMEL_DEVICENAME "ttyAT" #else /* Use device name ttyS, major 4, minor 64-68. This is the usual serial port * name, but it is legally reserved for the 8250 driver. */ -#define SERIAL_AT91_MAJOR TTY_MAJOR +#define SERIAL_ATMEL_MAJOR TTY_MAJOR #define MINOR_START 64 -#define AT91_DEVICENAME "ttyS" +#define ATMEL_DEVICENAME "ttyS" #endif -#define AT91_ISR_PASS_LIMIT 256 +#define ATMEL_ISR_PASS_LIMIT 256 -#define UART_PUT_CR(port,v) writel(v, (port)->membase + AT91_US_CR) -#define UART_GET_MR(port) readl((port)->membase + AT91_US_MR) -#define UART_PUT_MR(port,v) writel(v, (port)->membase + AT91_US_MR) -#define UART_PUT_IER(port,v) writel(v, (port)->membase + AT91_US_IER) -#define UART_PUT_IDR(port,v) writel(v, (port)->membase + AT91_US_IDR) -#define UART_GET_IMR(port) readl((port)->membase + AT91_US_IMR) -#define UART_GET_CSR(port) readl((port)->membase + AT91_US_CSR) -#define UART_GET_CHAR(port) readl((port)->membase + AT91_US_RHR) -#define UART_PUT_CHAR(port,v) writel(v, (port)->membase + AT91_US_THR) -#define UART_GET_BRGR(port) readl((port)->membase + AT91_US_BRGR) -#define UART_PUT_BRGR(port,v) writel(v, (port)->membase + AT91_US_BRGR) -#define UART_PUT_RTOR(port,v) writel(v, (port)->membase + AT91_US_RTOR) +#define UART_PUT_CR(port,v) writel(v, (port)->membase + ATMEL_US_CR) +#define UART_GET_MR(port) readl((port)->membase + ATMEL_US_MR) +#define UART_PUT_MR(port,v) writel(v, (port)->membase + ATMEL_US_MR) +#define UART_PUT_IER(port,v) writel(v, (port)->membase + ATMEL_US_IER) +#define UART_PUT_IDR(port,v) writel(v, (port)->membase + ATMEL_US_IDR) +#define UART_GET_IMR(port) readl((port)->membase + ATMEL_US_IMR) +#define UART_GET_CSR(port) readl((port)->membase + ATMEL_US_CSR) +#define UART_GET_CHAR(port) readl((port)->membase + ATMEL_US_RHR) +#define UART_PUT_CHAR(port,v) writel(v, (port)->membase + ATMEL_US_THR) +#define UART_GET_BRGR(port) readl((port)->membase + ATMEL_US_BRGR) +#define UART_PUT_BRGR(port,v) writel(v, (port)->membase + ATMEL_US_BRGR) +#define UART_PUT_RTOR(port,v) writel(v, (port)->membase + ATMEL_US_RTOR) -// #define UART_GET_CR(port) readl((port)->membase + AT91_US_CR) // is write-only +// #define UART_GET_CR(port) readl((port)->membase + ATMEL_US_CR) // is write-only /* PDC registers */ -#define UART_PUT_PTCR(port,v) writel(v, (port)->membase + AT91_PDC_PTCR) -#define UART_GET_PTSR(port) readl((port)->membase + AT91_PDC_PTSR) +#define UART_PUT_PTCR(port,v) writel(v, (port)->membase + ATMEL_PDC_PTCR) +#define UART_GET_PTSR(port) readl((port)->membase + ATMEL_PDC_PTSR) -#define UART_PUT_RPR(port,v) writel(v, (port)->membase + AT91_PDC_RPR) -#define UART_GET_RPR(port) readl((port)->membase + AT91_PDC_RPR) -#define UART_PUT_RCR(port,v) writel(v, (port)->membase + AT91_PDC_RCR) -#define UART_PUT_RNPR(port,v) writel(v, (port)->membase + AT91_PDC_RNPR) -#define UART_PUT_RNCR(port,v) writel(v, (port)->membase + AT91_PDC_RNCR) +#define UART_PUT_RPR(port,v) writel(v, (port)->membase + ATMEL_PDC_RPR) +#define UART_GET_RPR(port) readl((port)->membase + ATMEL_PDC_RPR) +#define UART_PUT_RCR(port,v) writel(v, (port)->membase + ATMEL_PDC_RCR) +#define UART_PUT_RNPR(port,v) writel(v, (port)->membase + ATMEL_PDC_RNPR) +#define UART_PUT_RNCR(port,v) writel(v, (port)->membase + ATMEL_PDC_RNCR) -#define UART_PUT_TPR(port,v) writel(v, (port)->membase + AT91_PDC_TPR) -#define UART_PUT_TCR(port,v) writel(v, (port)->membase + AT91_PDC_TCR) -//#define UART_PUT_TNPR(port,v) writel(v, (port)->membase + AT91_PDC_TNPR) -//#define UART_PUT_TNCR(port,v) writel(v, (port)->membase + AT91_PDC_TNCR) +#define UART_PUT_TPR(port,v) writel(v, (port)->membase + ATMEL_PDC_TPR) +#define UART_PUT_TCR(port,v) writel(v, (port)->membase + ATMEL_PDC_TCR) +//#define UART_PUT_TNPR(port,v) writel(v, (port)->membase + ATMEL_PDC_TNPR) +//#define UART_PUT_TNCR(port,v) writel(v, (port)->membase + ATMEL_PDC_TNCR) static int (*at91_open)(struct uart_port *); static void (*at91_close)(struct uart_port *); @@ -107,30 +107,30 @@ static void (*at91_close)(struct uart_port *); /* * We wrap our port structure around the generic uart_port. */ -struct at91_uart_port { +struct atmel_uart_port { struct uart_port uart; /* uart */ struct clk *clk; /* uart clock */ unsigned short suspended; /* is port suspended? */ }; -static struct at91_uart_port at91_ports[ATMEL_MAX_UART]; +static struct atmel_uart_port atmel_ports[ATMEL_MAX_UART]; #ifdef SUPPORT_SYSRQ -static struct console at91_console; +static struct console atmel_console; #endif /* * Return TIOCSER_TEMT when transmitter FIFO and Shift register is empty. */ -static u_int at91_tx_empty(struct uart_port *port) +static u_int atmel_tx_empty(struct uart_port *port) { - return (UART_GET_CSR(port) & AT91_US_TXEMPTY) ? TIOCSER_TEMT : 0; + return (UART_GET_CSR(port) & ATMEL_US_TXEMPTY) ? TIOCSER_TEMT : 0; } /* * Set state of the modem control output lines */ -static void at91_set_mctrl(struct uart_port *port, u_int mctrl) +static void atmel_set_mctrl(struct uart_port *port, u_int mctrl) { unsigned int control = 0; unsigned int mode; @@ -149,30 +149,30 @@ static void at91_set_mctrl(struct uart_port *port, u_int mctrl) } if (mctrl & TIOCM_RTS) - control |= AT91_US_RTSEN; + control |= ATMEL_US_RTSEN; else - control |= AT91_US_RTSDIS; + control |= ATMEL_US_RTSDIS; if (mctrl & TIOCM_DTR) - control |= AT91_US_DTREN; + control |= ATMEL_US_DTREN; else - control |= AT91_US_DTRDIS; + control |= ATMEL_US_DTRDIS; UART_PUT_CR(port, control); /* Local loopback mode? */ - mode = UART_GET_MR(port) & ~AT91_US_CHMODE; + mode = UART_GET_MR(port) & ~ATMEL_US_CHMODE; if (mctrl & TIOCM_LOOP) - mode |= AT91_US_CHMODE_LOC_LOOP; + mode |= ATMEL_US_CHMODE_LOC_LOOP; else - mode |= AT91_US_CHMODE_NORMAL; + mode |= ATMEL_US_CHMODE_NORMAL; UART_PUT_MR(port, mode); } /* * Get state of the modem control input lines */ -static u_int at91_get_mctrl(struct uart_port *port) +static u_int atmel_get_mctrl(struct uart_port *port) { unsigned int status, ret = 0; @@ -181,13 +181,13 @@ static u_int at91_get_mctrl(struct uart_port *port) /* * The control signals are active low. */ - if (!(status & AT91_US_DCD)) + if (!(status & ATMEL_US_DCD)) ret |= TIOCM_CD; - if (!(status & AT91_US_CTS)) + if (!(status & ATMEL_US_CTS)) ret |= TIOCM_CTS; - if (!(status & AT91_US_DSR)) + if (!(status & ATMEL_US_DSR)) ret |= TIOCM_DSR; - if (!(status & AT91_US_RI)) + if (!(status & ATMEL_US_RI)) ret |= TIOCM_RI; return ret; @@ -196,62 +196,62 @@ static u_int at91_get_mctrl(struct uart_port *port) /* * Stop transmitting. */ -static void at91_stop_tx(struct uart_port *port) +static void atmel_stop_tx(struct uart_port *port) { - struct at91_uart_port *at91_port = (struct at91_uart_port *) port; + struct atmel_uart_port *atmel_port = (struct atmel_uart_port *) port; - UART_PUT_IDR(port, AT91_US_TXRDY); + UART_PUT_IDR(port, ATMEL_US_TXRDY); } /* * Start transmitting. */ -static void at91_start_tx(struct uart_port *port) +static void atmel_start_tx(struct uart_port *port) { - struct at91_uart_port *at91_port = (struct at91_uart_port *) port; + struct atmel_uart_port *atmel_port = (struct atmel_uart_port *) port; - UART_PUT_IER(port, AT91_US_TXRDY); + UART_PUT_IER(port, ATMEL_US_TXRDY); } /* * Stop receiving - port is in process of being closed. */ -static void at91_stop_rx(struct uart_port *port) +static void atmel_stop_rx(struct uart_port *port) { - struct at91_uart_port *at91_port = (struct at91_uart_port *) port; + struct atmel_uart_port *atmel_port = (struct atmel_uart_port *) port; - UART_PUT_IDR(port, AT91_US_RXRDY); + UART_PUT_IDR(port, ATMEL_US_RXRDY); } /* * Enable modem status interrupts */ -static void at91_enable_ms(struct uart_port *port) +static void atmel_enable_ms(struct uart_port *port) { - UART_PUT_IER(port, AT91_US_RIIC | AT91_US_DSRIC | AT91_US_DCDIC | AT91_US_CTSIC); + UART_PUT_IER(port, ATMEL_US_RIIC | ATMEL_US_DSRIC | ATMEL_US_DCDIC | ATMEL_US_CTSIC); } /* * Control the transmission of a break signal */ -static void at91_break_ctl(struct uart_port *port, int break_state) +static void atmel_break_ctl(struct uart_port *port, int break_state) { if (break_state != 0) - UART_PUT_CR(port, AT91_US_STTBRK); /* start break */ + UART_PUT_CR(port, ATMEL_US_STTBRK); /* start break */ else - UART_PUT_CR(port, AT91_US_STPBRK); /* stop break */ + UART_PUT_CR(port, ATMEL_US_STPBRK); /* stop break */ } /* * Characters received (called from interrupt handler) */ -static void at91_rx_chars(struct uart_port *port, struct pt_regs *regs) +static void atmel_rx_chars(struct uart_port *port, struct pt_regs *regs) { struct tty_struct *tty = port->info->tty; unsigned int status, ch, flg; status = UART_GET_CSR(port); - while (status & AT91_US_RXRDY) { + while (status & ATMEL_US_RXRDY) { ch = UART_GET_CHAR(port); port->icount.rx++; @@ -262,35 +262,35 @@ static void at91_rx_chars(struct uart_port *port, struct pt_regs *regs) * note that the error handling code is * out of the main execution path */ - if (unlikely(status & (AT91_US_PARE | AT91_US_FRAME | AT91_US_OVRE | AT91_US_RXBRK))) { - UART_PUT_CR(port, AT91_US_RSTSTA); /* clear error */ - if (status & AT91_US_RXBRK) { - status &= ~(AT91_US_PARE | AT91_US_FRAME); /* ignore side-effect */ + if (unlikely(status & (ATMEL_US_PARE | ATMEL_US_FRAME | ATMEL_US_OVRE | ATMEL_US_RXBRK))) { + UART_PUT_CR(port, ATMEL_US_RSTSTA); /* clear error */ + if (status & ATMEL_US_RXBRK) { + status &= ~(ATMEL_US_PARE | ATMEL_US_FRAME); /* ignore side-effect */ port->icount.brk++; if (uart_handle_break(port)) goto ignore_char; } - if (status & AT91_US_PARE) + if (status & ATMEL_US_PARE) port->icount.parity++; - if (status & AT91_US_FRAME) + if (status & ATMEL_US_FRAME) port->icount.frame++; - if (status & AT91_US_OVRE) + if (status & ATMEL_US_OVRE) port->icount.overrun++; status &= port->read_status_mask; - if (status & AT91_US_RXBRK) + if (status & ATMEL_US_RXBRK) flg = TTY_BREAK; - else if (status & AT91_US_PARE) + else if (status & ATMEL_US_PARE) flg = TTY_PARITY; - else if (status & AT91_US_FRAME) + else if (status & ATMEL_US_FRAME) flg = TTY_FRAME; } if (uart_handle_sysrq_char(port, ch, regs)) goto ignore_char; - uart_insert_char(port, status, AT91_US_OVRE, ch, flg); + uart_insert_char(port, status, ATMEL_US_OVRE, ch, flg); ignore_char: status = UART_GET_CSR(port); @@ -302,7 +302,7 @@ static void at91_rx_chars(struct uart_port *port, struct pt_regs *regs) /* * Transmit characters (called from interrupt handler) */ -static void at91_tx_chars(struct uart_port *port) +static void atmel_tx_chars(struct uart_port *port) { struct circ_buf *xmit = &port->info->xmit; @@ -313,11 +313,11 @@ static void at91_tx_chars(struct uart_port *port) return; } if (uart_circ_empty(xmit) || uart_tx_stopped(port)) { - at91_stop_tx(port); + atmel_stop_tx(port); return; } - while (UART_GET_CSR(port) & AT91_US_TXRDY) { + while (UART_GET_CSR(port) & ATMEL_US_TXRDY) { UART_PUT_CHAR(port, xmit->buf[xmit->tail]); xmit->tail = (xmit->tail + 1) & (UART_XMIT_SIZE - 1); port->icount.tx++; @@ -329,40 +329,40 @@ static void at91_tx_chars(struct uart_port *port) uart_write_wakeup(port); if (uart_circ_empty(xmit)) - at91_stop_tx(port); + atmel_stop_tx(port); } /* * Interrupt handler */ -static irqreturn_t at91_interrupt(int irq, void *dev_id, struct pt_regs *regs) +static irqreturn_t atmel_interrupt(int irq, void *dev_id, struct pt_regs *regs) { struct uart_port *port = dev_id; - struct at91_uart_port *at91_port = (struct at91_uart_port *) port; + struct atmel_uart_port *atmel_port = (struct atmel_uart_port *) port; unsigned int status, pending, pass_counter = 0; status = UART_GET_CSR(port); pending = status & UART_GET_IMR(port); while (pending) { /* Interrupt receive */ - if (pending & AT91_US_RXRDY) - at91_rx_chars(port, regs); + if (pending & ATMEL_US_RXRDY) + atmel_rx_chars(port, regs); // TODO: All reads to CSR will clear these interrupts! - if (pending & AT91_US_RIIC) port->icount.rng++; - if (pending & AT91_US_DSRIC) port->icount.dsr++; - if (pending & AT91_US_DCDIC) - uart_handle_dcd_change(port, !(status & AT91_US_DCD)); - if (pending & AT91_US_CTSIC) - uart_handle_cts_change(port, !(status & AT91_US_CTS)); - if (pending & (AT91_US_RIIC | AT91_US_DSRIC | AT91_US_DCDIC | AT91_US_CTSIC)) + if (pending & ATMEL_US_RIIC) port->icount.rng++; + if (pending & ATMEL_US_DSRIC) port->icount.dsr++; + if (pending & ATMEL_US_DCDIC) + uart_handle_dcd_change(port, !(status & ATMEL_US_DCD)); + if (pending & ATMEL_US_CTSIC) + uart_handle_cts_change(port, !(status & ATMEL_US_CTS)); + if (pending & (ATMEL_US_RIIC | ATMEL_US_DSRIC | ATMEL_US_DCDIC | ATMEL_US_CTSIC)) wake_up_interruptible(&port->info->delta_msr_wait); /* Interrupt transmit */ - if (pending & AT91_US_TXRDY) - at91_tx_chars(port); + if (pending & ATMEL_US_TXRDY) + atmel_tx_chars(port); - if (pass_counter++ > AT91_ISR_PASS_LIMIT) + if (pass_counter++ > ATMEL_ISR_PASS_LIMIT) break; status = UART_GET_CSR(port); @@ -374,9 +374,9 @@ static irqreturn_t at91_interrupt(int irq, void *dev_id, struct pt_regs *regs) /* * Perform initialization and enable port for reception */ -static int at91_startup(struct uart_port *port) +static int atmel_startup(struct uart_port *port) { - struct at91_uart_port *at91_port = (struct at91_uart_port *) port; + struct atmel_uart_port *atmel_port = (struct atmel_uart_port *) port; int retval; /* @@ -389,9 +389,9 @@ static int at91_startup(struct uart_port *port) /* * Allocate the IRQ */ - retval = request_irq(port->irq, at91_interrupt, IRQF_SHARED, "at91_serial", port); + retval = request_irq(port->irq, atmel_interrupt, IRQF_SHARED, "atmel_serial", port); if (retval) { - printk("at91_serial: at91_startup - Can't get irq\n"); + printk("atmel_serial: atmel_startup - Can't get irq\n"); return retval; } @@ -410,10 +410,10 @@ static int at91_startup(struct uart_port *port) /* * Finally, enable the serial port */ - UART_PUT_CR(port, AT91_US_RSTSTA | AT91_US_RSTRX); - UART_PUT_CR(port, AT91_US_TXEN | AT91_US_RXEN); /* enable xmit & rcvr */ + UART_PUT_CR(port, ATMEL_US_RSTSTA | ATMEL_US_RSTRX); + UART_PUT_CR(port, ATMEL_US_TXEN | ATMEL_US_RXEN); /* enable xmit & rcvr */ - UART_PUT_IER(port, AT91_US_RXRDY); /* enable receive only */ + UART_PUT_IER(port, ATMEL_US_RXRDY); /* enable receive only */ return 0; } @@ -421,14 +421,14 @@ static int at91_startup(struct uart_port *port) /* * Disable the port */ -static void at91_shutdown(struct uart_port *port) +static void atmel_shutdown(struct uart_port *port) { - struct at91_uart_port *at91_port = (struct at91_uart_port *) port; + struct atmel_uart_port *atmel_port = (struct atmel_uart_port *) port; /* * Disable all interrupts, port and break condition. */ - UART_PUT_CR(port, AT91_US_RSTSTA); + UART_PUT_CR(port, ATMEL_US_RSTSTA); UART_PUT_IDR(port, -1); /* @@ -447,9 +447,9 @@ static void at91_shutdown(struct uart_port *port) /* * Power / Clock management. */ -static void at91_serial_pm(struct uart_port *port, unsigned int state, unsigned int oldstate) +static void atmel_serial_pm(struct uart_port *port, unsigned int state, unsigned int oldstate) { - struct at91_uart_port *at91_port = (struct at91_uart_port *) port; + struct atmel_uart_port *atmel_port = (struct atmel_uart_port *) port; switch (state) { case 0: @@ -457,24 +457,24 @@ static void at91_serial_pm(struct uart_port *port, unsigned int state, unsigned * Enable the peripheral clock for this serial port. * This is called on uart_open() or a resume event. */ - clk_enable(at91_port->clk); + clk_enable(atmel_port->clk); break; case 3: /* * Disable the peripheral clock for this serial port. * This is called on uart_close() or a suspend event. */ - clk_disable(at91_port->clk); + clk_disable(atmel_port->clk); break; default: - printk(KERN_ERR "at91_serial: unknown pm %d\n", state); + printk(KERN_ERR "atmel_serial: unknown pm %d\n", state); } } /* * Change the port parameters */ -static void at91_set_termios(struct uart_port *port, struct termios * termios, struct termios * old) +static void atmel_set_termios(struct uart_port *port, struct termios * termios, struct termios * old) { unsigned long flags; unsigned int mode, imr, quot, baud; @@ -483,66 +483,66 @@ static void at91_set_termios(struct uart_port *port, struct termios * termios, s quot = uart_get_divisor(port, baud); /* Get current mode register */ - mode = UART_GET_MR(port) & ~(AT91_US_CHRL | AT91_US_NBSTOP | AT91_US_PAR); + mode = UART_GET_MR(port) & ~(ATMEL_US_CHRL | ATMEL_US_NBSTOP | ATMEL_US_PAR); /* byte size */ switch (termios->c_cflag & CSIZE) { case CS5: - mode |= AT91_US_CHRL_5; + mode |= ATMEL_US_CHRL_5; break; case CS6: - mode |= AT91_US_CHRL_6; + mode |= ATMEL_US_CHRL_6; break; case CS7: - mode |= AT91_US_CHRL_7; + mode |= ATMEL_US_CHRL_7; break; default: - mode |= AT91_US_CHRL_8; + mode |= ATMEL_US_CHRL_8; break; } /* stop bits */ if (termios->c_cflag & CSTOPB) - mode |= AT91_US_NBSTOP_2; + mode |= ATMEL_US_NBSTOP_2; /* parity */ if (termios->c_cflag & PARENB) { if (termios->c_cflag & CMSPAR) { /* Mark or Space parity */ if (termios->c_cflag & PARODD) - mode |= AT91_US_PAR_MARK; + mode |= ATMEL_US_PAR_MARK; else - mode |= AT91_US_PAR_SPACE; + mode |= ATMEL_US_PAR_SPACE; } else if (termios->c_cflag & PARODD) - mode |= AT91_US_PAR_ODD; + mode |= ATMEL_US_PAR_ODD; else - mode |= AT91_US_PAR_EVEN; + mode |= ATMEL_US_PAR_EVEN; } else - mode |= AT91_US_PAR_NONE; + mode |= ATMEL_US_PAR_NONE; spin_lock_irqsave(&port->lock, flags); - port->read_status_mask = AT91_US_OVRE; + port->read_status_mask = ATMEL_US_OVRE; if (termios->c_iflag & INPCK) - port->read_status_mask |= (AT91_US_FRAME | AT91_US_PARE); + port->read_status_mask |= (ATMEL_US_FRAME | ATMEL_US_PARE); if (termios->c_iflag & (BRKINT | PARMRK)) - port->read_status_mask |= AT91_US_RXBRK; + port->read_status_mask |= ATMEL_US_RXBRK; /* * Characters to ignore */ port->ignore_status_mask = 0; if (termios->c_iflag & IGNPAR) - port->ignore_status_mask |= (AT91_US_FRAME | AT91_US_PARE); + port->ignore_status_mask |= (ATMEL_US_FRAME | ATMEL_US_PARE); if (termios->c_iflag & IGNBRK) { - port->ignore_status_mask |= AT91_US_RXBRK; + port->ignore_status_mask |= ATMEL_US_RXBRK; /* * If we're ignoring parity and break indicators, * ignore overruns too (for real raw support). */ if (termios->c_iflag & IGNPAR) - port->ignore_status_mask |= AT91_US_OVRE; + port->ignore_status_mask |= ATMEL_US_OVRE; } // TODO: Ignore all characters if CREAD is set. @@ -553,18 +553,18 @@ static void at91_set_termios(struct uart_port *port, struct termios * termios, s /* disable interrupts and drain transmitter */ imr = UART_GET_IMR(port); /* get interrupt mask */ UART_PUT_IDR(port, -1); /* disable all interrupts */ - while (!(UART_GET_CSR(port) & AT91_US_TXEMPTY)) { barrier(); } + while (!(UART_GET_CSR(port) & ATMEL_US_TXEMPTY)) { barrier(); } /* disable receiver and transmitter */ - UART_PUT_CR(port, AT91_US_TXDIS | AT91_US_RXDIS); + UART_PUT_CR(port, ATMEL_US_TXDIS | ATMEL_US_RXDIS); /* set the parity, stop bits and data size */ UART_PUT_MR(port, mode); /* set the baud rate */ UART_PUT_BRGR(port, quot); - UART_PUT_CR(port, AT91_US_RSTSTA | AT91_US_RSTRX); - UART_PUT_CR(port, AT91_US_TXEN | AT91_US_RXEN); + UART_PUT_CR(port, ATMEL_US_RSTSTA | ATMEL_US_RSTRX); + UART_PUT_CR(port, ATMEL_US_TXEN | ATMEL_US_RXEN); /* restore interrupts */ UART_PUT_IER(port, imr); @@ -579,15 +579,15 @@ static void at91_set_termios(struct uart_port *port, struct termios * termios, s /* * Return string describing the specified port */ -static const char *at91_type(struct uart_port *port) +static const char *atmel_type(struct uart_port *port) { - return (port->type == PORT_AT91) ? "AT91_SERIAL" : NULL; + return (port->type == PORT_AT91) ? "ATMEL_SERIAL" : NULL; } /* * Release the memory region(s) being used by 'port'. */ -static void at91_release_port(struct uart_port *port) +static void atmel_release_port(struct uart_port *port) { struct platform_device *pdev = to_platform_device(port->dev); int size = pdev->resource[0].end - pdev->resource[0].start + 1; @@ -603,12 +603,12 @@ static void at91_release_port(struct uart_port *port) /* * Request the memory region(s) being used by 'port'. */ -static int at91_request_port(struct uart_port *port) +static int atmel_request_port(struct uart_port *port) { struct platform_device *pdev = to_platform_device(port->dev); int size = pdev->resource[0].end - pdev->resource[0].start + 1; - if (!request_mem_region(port->mapbase, size, "at91_serial")) + if (!request_mem_region(port->mapbase, size, "atmel_serial")) return -EBUSY; if (port->flags & UPF_IOREMAP) { @@ -625,18 +625,18 @@ static int at91_request_port(struct uart_port *port) /* * Configure/autoconfigure the port. */ -static void at91_config_port(struct uart_port *port, int flags) +static void atmel_config_port(struct uart_port *port, int flags) { if (flags & UART_CONFIG_TYPE) { port->type = PORT_AT91; - at91_request_port(port); + atmel_request_port(port); } } /* * Verify the new serial_struct (for TIOCSSERIAL). */ -static int at91_verify_port(struct uart_port *port, struct serial_struct *ser) +static int atmel_verify_port(struct uart_port *port, struct serial_struct *ser) { int ret = 0; if (ser->type != PORT_UNKNOWN && ser->type != PORT_AT91) @@ -656,37 +656,37 @@ static int at91_verify_port(struct uart_port *port, struct serial_struct *ser) return ret; } -static struct uart_ops at91_pops = { - .tx_empty = at91_tx_empty, - .set_mctrl = at91_set_mctrl, - .get_mctrl = at91_get_mctrl, - .stop_tx = at91_stop_tx, - .start_tx = at91_start_tx, - .stop_rx = at91_stop_rx, - .enable_ms = at91_enable_ms, - .break_ctl = at91_break_ctl, - .startup = at91_startup, - .shutdown = at91_shutdown, - .set_termios = at91_set_termios, - .type = at91_type, - .release_port = at91_release_port, - .request_port = at91_request_port, - .config_port = at91_config_port, - .verify_port = at91_verify_port, - .pm = at91_serial_pm, +static struct uart_ops atmel_pops = { + .tx_empty = atmel_tx_empty, + .set_mctrl = atmel_set_mctrl, + .get_mctrl = atmel_get_mctrl, + .stop_tx = atmel_stop_tx, + .start_tx = atmel_start_tx, + .stop_rx = atmel_stop_rx, + .enable_ms = atmel_enable_ms, + .break_ctl = atmel_break_ctl, + .startup = atmel_startup, + .shutdown = atmel_shutdown, + .set_termios = atmel_set_termios, + .type = atmel_type, + .release_port = atmel_release_port, + .request_port = atmel_request_port, + .config_port = atmel_config_port, + .verify_port = atmel_verify_port, + .pm = atmel_serial_pm, }; /* * Configure the port from the platform device resource info. */ -static void __devinit at91_init_port(struct at91_uart_port *at91_port, struct platform_device *pdev) +static void __devinit atmel_init_port(struct atmel_uart_port *atmel_port, struct platform_device *pdev) { - struct uart_port *port = &at91_port->uart; + struct uart_port *port = &atmel_port->uart; struct atmel_uart_data *data = pdev->dev.platform_data; port->iotype = UPIO_MEM; port->flags = UPF_BOOT_AUTOCONF; - port->ops = &at91_pops; + port->ops = &atmel_pops; port->fifosize = 1; port->line = pdev->id; port->dev = &pdev->dev; @@ -701,10 +701,10 @@ static void __devinit at91_init_port(struct at91_uart_port *at91_port, struct pl port->membase = NULL; } - if (!at91_port->clk) { /* for console, the clock could already be configured */ - at91_port->clk = clk_get(&pdev->dev, "usart"); - clk_enable(at91_port->clk); - port->uartclk = clk_get_rate(at91_port->clk); + if (!atmel_port->clk) { /* for console, the clock could already be configured */ + atmel_port->clk = clk_get(&pdev->dev, "usart"); + clk_enable(atmel_port->clk); + port->uartclk = clk_get_rate(atmel_port->clk); } } @@ -714,22 +714,22 @@ static void __devinit at91_init_port(struct at91_uart_port *at91_port, struct pl void __init at91_register_uart_fns(struct at91_port_fns *fns) { if (fns->enable_ms) - at91_pops.enable_ms = fns->enable_ms; + atmel_pops.enable_ms = fns->enable_ms; if (fns->get_mctrl) - at91_pops.get_mctrl = fns->get_mctrl; + atmel_pops.get_mctrl = fns->get_mctrl; if (fns->set_mctrl) - at91_pops.set_mctrl = fns->set_mctrl; - at91_open = fns->open; - at91_close = fns->close; - at91_pops.pm = fns->pm; - at91_pops.set_wake = fns->set_wake; + atmel_pops.set_mctrl = fns->set_mctrl; + at91_open = fns->open; + at91_close = fns->close; + atmel_pops.pm = fns->pm; + atmel_pops.set_wake = fns->set_wake; } #ifdef CONFIG_SERIAL_ATMEL_CONSOLE -static void at91_console_putchar(struct uart_port *port, int ch) +static void atmel_console_putchar(struct uart_port *port, int ch) { - while (!(UART_GET_CSR(port) & AT91_US_TXRDY)) + while (!(UART_GET_CSR(port) & ATMEL_US_TXRDY)) barrier(); UART_PUT_CHAR(port, ch); } @@ -737,18 +737,18 @@ static void at91_console_putchar(struct uart_port *port, int ch) /* * Interrupts are disabled on entering */ -static void at91_console_write(struct console *co, const char *s, u_int count) +static void atmel_console_write(struct console *co, const char *s, u_int count) { - struct uart_port *port = &at91_ports[co->index].uart; + struct uart_port *port = &atmel_ports[co->index].uart; unsigned int status, imr; /* * First, save IMR and then disable interrupts */ imr = UART_GET_IMR(port); /* get interrupt mask */ - UART_PUT_IDR(port, AT91_US_RXRDY | AT91_US_TXRDY); + UART_PUT_IDR(port, ATMEL_US_RXRDY | ATMEL_US_TXRDY); - uart_console_write(port, s, count, at91_console_putchar); + uart_console_write(port, s, count, atmel_console_putchar); /* * Finally, wait for transmitter to become empty @@ -756,7 +756,7 @@ static void at91_console_write(struct console *co, const char *s, u_int count) */ do { status = UART_GET_CSR(port); - } while (!(status & AT91_US_TXRDY)); + } while (!(status & ATMEL_US_TXRDY)); UART_PUT_IER(port, imr); /* set interrupts back the way they were */ } @@ -764,37 +764,37 @@ static void at91_console_write(struct console *co, const char *s, u_int count) * If the port was already initialised (eg, by a boot loader), try to determine * the current setup. */ -static void __init at91_console_get_options(struct uart_port *port, int *baud, int *parity, int *bits) +static void __init atmel_console_get_options(struct uart_port *port, int *baud, int *parity, int *bits) { unsigned int mr, quot; // TODO: CR is a write-only register // unsigned int cr; // -// cr = UART_GET_CR(port) & (AT91_US_RXEN | AT91_US_TXEN); -// if (cr == (AT91_US_RXEN | AT91_US_TXEN)) { +// cr = UART_GET_CR(port) & (ATMEL_US_RXEN | ATMEL_US_TXEN); +// if (cr == (ATMEL_US_RXEN | ATMEL_US_TXEN)) { // /* ok, the port was enabled */ // } - mr = UART_GET_MR(port) & AT91_US_CHRL; - if (mr == AT91_US_CHRL_8) + mr = UART_GET_MR(port) & ATMEL_US_CHRL; + if (mr == ATMEL_US_CHRL_8) *bits = 8; else *bits = 7; - mr = UART_GET_MR(port) & AT91_US_PAR; - if (mr == AT91_US_PAR_EVEN) + mr = UART_GET_MR(port) & ATMEL_US_PAR; + if (mr == ATMEL_US_PAR_EVEN) *parity = 'e'; - else if (mr == AT91_US_PAR_ODD) + else if (mr == ATMEL_US_PAR_ODD) *parity = 'o'; quot = UART_GET_BRGR(port); *baud = port->uartclk / (16 * (quot)); } -static int __init at91_console_setup(struct console *co, char *options) +static int __init atmel_console_setup(struct console *co, char *options) { - struct uart_port *port = &at91_ports[co->index].uart; + struct uart_port *port = &atmel_ports[co->index].uart; int baud = 115200; int bits = 8; int parity = 'n'; @@ -804,115 +804,115 @@ static int __init at91_console_setup(struct console *co, char *options) return -ENODEV; UART_PUT_IDR(port, -1); /* disable interrupts */ - UART_PUT_CR(port, AT91_US_RSTSTA | AT91_US_RSTRX); - UART_PUT_CR(port, AT91_US_TXEN | AT91_US_RXEN); + UART_PUT_CR(port, ATMEL_US_RSTSTA | ATMEL_US_RSTRX); + UART_PUT_CR(port, ATMEL_US_TXEN | ATMEL_US_RXEN); if (options) uart_parse_options(options, &baud, &parity, &bits, &flow); else - at91_console_get_options(port, &baud, &parity, &bits); + atmel_console_get_options(port, &baud, &parity, &bits); return uart_set_options(port, co, baud, parity, bits, flow); } -static struct uart_driver at91_uart; +static struct uart_driver atmel_uart; -static struct console at91_console = { - .name = AT91_DEVICENAME, - .write = at91_console_write, +static struct console atmel_console = { + .name = ATMEL_DEVICENAME, + .write = atmel_console_write, .device = uart_console_device, - .setup = at91_console_setup, + .setup = atmel_console_setup, .flags = CON_PRINTBUFFER, .index = -1, - .data = &at91_uart, + .data = &atmel_uart, }; -#define AT91_CONSOLE_DEVICE &at91_console +#define ATMEL_CONSOLE_DEVICE &atmel_console /* * Early console initialization (before VM subsystem initialized). */ -static int __init at91_console_init(void) +static int __init atmel_console_init(void) { if (atmel_default_console_device) { - add_preferred_console(AT91_DEVICENAME, atmel_default_console_device->id, NULL); - at91_init_port(&(at91_ports[atmel_default_console_device->id]), atmel_default_console_device); - register_console(&at91_console); + add_preferred_console(ATMEL_DEVICENAME, atmel_default_console_device->id, NULL); + atmel_init_port(&(atmel_ports[atmel_default_console_device->id]), atmel_default_console_device); + register_console(&atmel_console); } return 0; } -console_initcall(at91_console_init); +console_initcall(atmel_console_init); /* * Late console initialization. */ -static int __init at91_late_console_init(void) +static int __init atmel_late_console_init(void) { - if (atmel_default_console_device && !(at91_console.flags & CON_ENABLED)) - register_console(&at91_console); + if (atmel_default_console_device && !(atmel_console.flags & CON_ENABLED)) + register_console(&atmel_console); return 0; } -core_initcall(at91_late_console_init); +core_initcall(atmel_late_console_init); #else -#define AT91_CONSOLE_DEVICE NULL +#define ATMEL_CONSOLE_DEVICE NULL #endif -static struct uart_driver at91_uart = { +static struct uart_driver atmel_uart = { .owner = THIS_MODULE, - .driver_name = "at91_serial", - .dev_name = AT91_DEVICENAME, - .major = SERIAL_AT91_MAJOR, + .driver_name = "atmel_serial", + .dev_name = ATMEL_DEVICENAME, + .major = SERIAL_ATMEL_MAJOR, .minor = MINOR_START, .nr = ATMEL_MAX_UART, - .cons = AT91_CONSOLE_DEVICE, + .cons = ATMEL_CONSOLE_DEVICE, }; #ifdef CONFIG_PM -static int at91_serial_suspend(struct platform_device *pdev, pm_message_t state) +static int atmel_serial_suspend(struct platform_device *pdev, pm_message_t state) { struct uart_port *port = platform_get_drvdata(pdev); - struct at91_uart_port *at91_port = (struct at91_uart_port *) port; + struct atmel_uart_port *atmel_port = (struct atmel_uart_port *) port; if (device_may_wakeup(&pdev->dev) && !at91_suspend_entering_slow_clock()) enable_irq_wake(port->irq); else { disable_irq_wake(port->irq); - uart_suspend_port(&at91_uart, port); - at91_port->suspended = 1; + uart_suspend_port(&atmel_uart, port); + atmel_port->suspended = 1; } return 0; } -static int at91_serial_resume(struct platform_device *pdev) +static int atmel_serial_resume(struct platform_device *pdev) { struct uart_port *port = platform_get_drvdata(pdev); - struct at91_uart_port *at91_port = (struct at91_uart_port *) port; + struct atmel_uart_port *atmel_port = (struct atmel_uart_port *) port; - if (at91_port->suspended) { - uart_resume_port(&at91_uart, port); - at91_port->suspended = 0; + if (atmel_port->suspended) { + uart_resume_port(&atmel_uart, port); + atmel_port->suspended = 0; } return 0; } #else -#define at91_serial_suspend NULL -#define at91_serial_resume NULL +#define atmel_serial_suspend NULL +#define atmel_serial_resume NULL #endif -static int __devinit at91_serial_probe(struct platform_device *pdev) +static int __devinit atmel_serial_probe(struct platform_device *pdev) { - struct at91_uart_port *port; + struct atmel_uart_port *port; int ret; - port = &at91_ports[pdev->id]; - at91_init_port(port, pdev); + port = &atmel_ports[pdev->id]; + atmel_init_port(port, pdev); - ret = uart_add_one_port(&at91_uart, &port->uart); + ret = uart_add_one_port(&atmel_uart, &port->uart); if (!ret) { device_init_wakeup(&pdev->dev, 1); platform_set_drvdata(pdev, port); @@ -921,61 +921,61 @@ static int __devinit at91_serial_probe(struct platform_device *pdev) return ret; } -static int __devexit at91_serial_remove(struct platform_device *pdev) +static int __devexit atmel_serial_remove(struct platform_device *pdev) { struct uart_port *port = platform_get_drvdata(pdev); - struct at91_uart_port *at91_port = (struct at91_uart_port *) port; + struct atmel_uart_port *atmel_port = (struct atmel_uart_port *) port; int ret = 0; - clk_disable(at91_port->clk); - clk_put(at91_port->clk); + clk_disable(atmel_port->clk); + clk_put(atmel_port->clk); device_init_wakeup(&pdev->dev, 0); platform_set_drvdata(pdev, NULL); if (port) { - ret = uart_remove_one_port(&at91_uart, port); + ret = uart_remove_one_port(&atmel_uart, port); kfree(port); } return ret; } -static struct platform_driver at91_serial_driver = { - .probe = at91_serial_probe, - .remove = __devexit_p(at91_serial_remove), - .suspend = at91_serial_suspend, - .resume = at91_serial_resume, +static struct platform_driver atmel_serial_driver = { + .probe = atmel_serial_probe, + .remove = __devexit_p(atmel_serial_remove), + .suspend = atmel_serial_suspend, + .resume = atmel_serial_resume, .driver = { .name = "atmel_usart", .owner = THIS_MODULE, }, }; -static int __init at91_serial_init(void) +static int __init atmel_serial_init(void) { int ret; - ret = uart_register_driver(&at91_uart); + ret = uart_register_driver(&atmel_uart); if (ret) return ret; - ret = platform_driver_register(&at91_serial_driver); + ret = platform_driver_register(&atmel_serial_driver); if (ret) - uart_unregister_driver(&at91_uart); + uart_unregister_driver(&atmel_uart); return ret; } -static void __exit at91_serial_exit(void) +static void __exit atmel_serial_exit(void) { - platform_driver_unregister(&at91_serial_driver); - uart_unregister_driver(&at91_uart); + platform_driver_unregister(&atmel_serial_driver); + uart_unregister_driver(&atmel_uart); } -module_init(at91_serial_init); -module_exit(at91_serial_exit); +module_init(atmel_serial_init); +module_exit(atmel_serial_exit); MODULE_AUTHOR("Rick Bronson"); -MODULE_DESCRIPTION("AT91 generic serial port driver"); +MODULE_DESCRIPTION("Atmel AT91 / AT32 serial port driver"); MODULE_LICENSE("GPL"); |