+++ /dev/null
-/*
- * linux/drivers/char/amba.c
- *
- * Driver for AMBA serial ports
- *
- * Based on drivers/char/serial.c, by Linus Torvalds, Theodore Ts'o.
- *
- * Copyright 1999 ARM Limited
- * Copyright (C) 2000 Deep Blue Solutions Ltd.
- *
- * 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
- *
- * This is a generic driver for ARM AMBA-type serial ports. They
- * have a lot of 16550-like features, but are not register compatible.
- * Note that although they do have CTS, DCD and DSR inputs, they do
- * not have an RI input, nor do they have DTR or RTS outputs. If
- * required, these have to be supplied via some other means (eg, GPIO)
- * and hooked into this driver.
- */
-
-#if defined(CONFIG_SERIAL_AMBA_PL010_CONSOLE) && defined(CONFIG_MAGIC_SYSRQ)
-#define SUPPORT_SYSRQ
-#endif
-
-#include <linux/module.h>
-#include <linux/ioport.h>
-#include <linux/init.h>
-#include <linux/console.h>
-#include <linux/sysrq.h>
-#include <linux/device.h>
-#include <linux/tty.h>
-#include <linux/tty_flip.h>
-#include <linux/serial_core.h>
-#include <linux/serial.h>
-#include <linux/amba/bus.h>
-#include <linux/amba/serial.h>
-#include <linux/clk.h>
-#include <linux/slab.h>
-
-#include <asm/io.h>
-
-#define UART_NR 8
-
-#define SERIAL_AMBA_MAJOR 204
-#define SERIAL_AMBA_MINOR 16
-#define SERIAL_AMBA_NR UART_NR
-
-#define AMBA_ISR_PASS_LIMIT 256
-
-#define UART_RX_DATA(s) (((s) & UART01x_FR_RXFE) == 0)
-#define UART_TX_READY(s) (((s) & UART01x_FR_TXFF) == 0)
-
-#define UART_DUMMY_RSR_RX 256
-#define UART_PORT_SIZE 64
-
-/*
- * We wrap our port structure around the generic uart_port.
- */
-struct uart_amba_port {
- struct uart_port port;
- struct clk *clk;
- struct amba_device *dev;
- struct amba_pl010_data *data;
- unsigned int old_status;
-};
-
-static void pl010_stop_tx(struct uart_port *port)
-{
- struct uart_amba_port *uap = (struct uart_amba_port *)port;
- unsigned int cr;
-
- cr = readb(uap->port.membase + UART010_CR);
- cr &= ~UART010_CR_TIE;
- writel(cr, uap->port.membase + UART010_CR);
-}
-
-static void pl010_start_tx(struct uart_port *port)
-{
- struct uart_amba_port *uap = (struct uart_amba_port *)port;
- unsigned int cr;
-
- cr = readb(uap->port.membase + UART010_CR);
- cr |= UART010_CR_TIE;
- writel(cr, uap->port.membase + UART010_CR);
-}
-
-static void pl010_stop_rx(struct uart_port *port)
-{
- struct uart_amba_port *uap = (struct uart_amba_port *)port;
- unsigned int cr;
-
- cr = readb(uap->port.membase + UART010_CR);
- cr &= ~(UART010_CR_RIE | UART010_CR_RTIE);
- writel(cr, uap->port.membase + UART010_CR);
-}
-
-static void pl010_enable_ms(struct uart_port *port)
-{
- struct uart_amba_port *uap = (struct uart_amba_port *)port;
- unsigned int cr;
-
- cr = readb(uap->port.membase + UART010_CR);
- cr |= UART010_CR_MSIE;
- writel(cr, uap->port.membase + UART010_CR);
-}
-
-static void pl010_rx_chars(struct uart_amba_port *uap)
-{
- struct tty_struct *tty = uap->port.state->port.tty;
- unsigned int status, ch, flag, rsr, max_count = 256;
-
- status = readb(uap->port.membase + UART01x_FR);
- while (UART_RX_DATA(status) && max_count--) {
- ch = readb(uap->port.membase + UART01x_DR);
- flag = TTY_NORMAL;
-
- uap->port.icount.rx++;
-
- /*
- * Note that the error handling code is
- * out of the main execution path
- */
- rsr = readb(uap->port.membase + UART01x_RSR) | UART_DUMMY_RSR_RX;
- if (unlikely(rsr & UART01x_RSR_ANY)) {
- writel(0, uap->port.membase + UART01x_ECR);
-
- if (rsr & UART01x_RSR_BE) {
- rsr &= ~(UART01x_RSR_FE | UART01x_RSR_PE);
- uap->port.icount.brk++;
- if (uart_handle_break(&uap->port))
- goto ignore_char;
- } else if (rsr & UART01x_RSR_PE)
- uap->port.icount.parity++;
- else if (rsr & UART01x_RSR_FE)
- uap->port.icount.frame++;
- if (rsr & UART01x_RSR_OE)
- uap->port.icount.overrun++;
-
- rsr &= uap->port.read_status_mask;
-
- if (rsr & UART01x_RSR_BE)
- flag = TTY_BREAK;
- else if (rsr & UART01x_RSR_PE)
- flag = TTY_PARITY;
- else if (rsr & UART01x_RSR_FE)
- flag = TTY_FRAME;
- }
-
- if (uart_handle_sysrq_char(&uap->port, ch))
- goto ignore_char;
-
- uart_insert_char(&uap->port, rsr, UART01x_RSR_OE, ch, flag);
-
- ignore_char:
- status = readb(uap->port.membase + UART01x_FR);
- }
- spin_unlock(&uap->port.lock);
- tty_flip_buffer_push(tty);
- spin_lock(&uap->port.lock);
-}
-
-static void pl010_tx_chars(struct uart_amba_port *uap)
-{
- struct circ_buf *xmit = &uap->port.state->xmit;
- int count;
-
- if (uap->port.x_char) {
- writel(uap->port.x_char, uap->port.membase + UART01x_DR);
- uap->port.icount.tx++;
- uap->port.x_char = 0;
- return;
- }
- if (uart_circ_empty(xmit) || uart_tx_stopped(&uap->port)) {
- pl010_stop_tx(&uap->port);
- return;
- }
-
- count = uap->port.fifosize >> 1;
- do {
- writel(xmit->buf[xmit->tail], uap->port.membase + UART01x_DR);
- xmit->tail = (xmit->tail + 1) & (UART_XMIT_SIZE - 1);
- uap->port.icount.tx++;
- if (uart_circ_empty(xmit))
- break;
- } while (--count > 0);
-
- if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS)
- uart_write_wakeup(&uap->port);
-
- if (uart_circ_empty(xmit))
- pl010_stop_tx(&uap->port);
-}
-
-static void pl010_modem_status(struct uart_amba_port *uap)
-{
- unsigned int status, delta;
-
- writel(0, uap->port.membase + UART010_ICR);
-
- status = readb(uap->port.membase + UART01x_FR) & UART01x_FR_MODEM_ANY;
-
- delta = status ^ uap->old_status;
- uap->old_status = status;
-
- if (!delta)
- return;
-
- if (delta & UART01x_FR_DCD)
- uart_handle_dcd_change(&uap->port, status & UART01x_FR_DCD);
-
- if (delta & UART01x_FR_DSR)
- uap->port.icount.dsr++;
-
- if (delta & UART01x_FR_CTS)
- uart_handle_cts_change(&uap->port, status & UART01x_FR_CTS);
-
- wake_up_interruptible(&uap->port.state->port.delta_msr_wait);
-}
-
-static irqreturn_t pl010_int(int irq, void *dev_id)
-{
- struct uart_amba_port *uap = dev_id;
- unsigned int status, pass_counter = AMBA_ISR_PASS_LIMIT;
- int handled = 0;
-
- spin_lock(&uap->port.lock);
-
- status = readb(uap->port.membase + UART010_IIR);
- if (status) {
- do {
- if (status & (UART010_IIR_RTIS | UART010_IIR_RIS))
- pl010_rx_chars(uap);
- if (status & UART010_IIR_MIS)
- pl010_modem_status(uap);
- if (status & UART010_IIR_TIS)
- pl010_tx_chars(uap);
-
- if (pass_counter-- == 0)
- break;
-
- status = readb(uap->port.membase + UART010_IIR);
- } while (status & (UART010_IIR_RTIS | UART010_IIR_RIS |
- UART010_IIR_TIS));
- handled = 1;
- }
-
- spin_unlock(&uap->port.lock);
-
- return IRQ_RETVAL(handled);
-}
-
-static unsigned int pl010_tx_empty(struct uart_port *port)
-{
- struct uart_amba_port *uap = (struct uart_amba_port *)port;
- unsigned int status = readb(uap->port.membase + UART01x_FR);
- return status & UART01x_FR_BUSY ? 0 : TIOCSER_TEMT;
-}
-
-static unsigned int pl010_get_mctrl(struct uart_port *port)
-{
- struct uart_amba_port *uap = (struct uart_amba_port *)port;
- unsigned int result = 0;
- unsigned int status;
-
- status = readb(uap->port.membase + UART01x_FR);
- if (status & UART01x_FR_DCD)
- result |= TIOCM_CAR;
- if (status & UART01x_FR_DSR)
- result |= TIOCM_DSR;
- if (status & UART01x_FR_CTS)
- result |= TIOCM_CTS;
-
- return result;
-}
-
-static void pl010_set_mctrl(struct uart_port *port, unsigned int mctrl)
-{
- struct uart_amba_port *uap = (struct uart_amba_port *)port;
-
- if (uap->data)
- uap->data->set_mctrl(uap->dev, uap->port.membase, mctrl);
-}
-
-static void pl010_break_ctl(struct uart_port *port, int break_state)
-{
- struct uart_amba_port *uap = (struct uart_amba_port *)port;
- unsigned long flags;
- unsigned int lcr_h;
-
- spin_lock_irqsave(&uap->port.lock, flags);
- lcr_h = readb(uap->port.membase + UART010_LCRH);
- if (break_state == -1)
- lcr_h |= UART01x_LCRH_BRK;
- else
- lcr_h &= ~UART01x_LCRH_BRK;
- writel(lcr_h, uap->port.membase + UART010_LCRH);
- spin_unlock_irqrestore(&uap->port.lock, flags);
-}
-
-static int pl010_startup(struct uart_port *port)
-{
- struct uart_amba_port *uap = (struct uart_amba_port *)port;
- int retval;
-
- /*
- * Try to enable the clock producer.
- */
- retval = clk_enable(uap->clk);
- if (retval)
- goto out;
-
- uap->port.uartclk = clk_get_rate(uap->clk);
-
- /*
- * Allocate the IRQ
- */
- retval = request_irq(uap->port.irq, pl010_int, 0, "uart-pl010", uap);
- if (retval)
- goto clk_dis;
-
- /*
- * initialise the old status of the modem signals
- */
- uap->old_status = readb(uap->port.membase + UART01x_FR) & UART01x_FR_MODEM_ANY;
-
- /*
- * Finally, enable interrupts
- */
- writel(UART01x_CR_UARTEN | UART010_CR_RIE | UART010_CR_RTIE,
- uap->port.membase + UART010_CR);
-
- return 0;
-
- clk_dis:
- clk_disable(uap->clk);
- out:
- return retval;
-}
-
-static void pl010_shutdown(struct uart_port *port)
-{
- struct uart_amba_port *uap = (struct uart_amba_port *)port;
-
- /*
- * Free the interrupt
- */
- free_irq(uap->port.irq, uap);
-
- /*
- * disable all interrupts, disable the port
- */
- writel(0, uap->port.membase + UART010_CR);
-
- /* disable break condition and fifos */
- writel(readb(uap->port.membase + UART010_LCRH) &
- ~(UART01x_LCRH_BRK | UART01x_LCRH_FEN),
- uap->port.membase + UART010_LCRH);
-
- /*
- * Shut down the clock producer
- */
- clk_disable(uap->clk);
-}
-
-static void
-pl010_set_termios(struct uart_port *port, struct ktermios *termios,
- struct ktermios *old)
-{
- struct uart_amba_port *uap = (struct uart_amba_port *)port;
- unsigned int lcr_h, old_cr;
- unsigned long flags;
- unsigned int baud, quot;
-
- /*
- * Ask the core to calculate the divisor for us.
- */
- baud = uart_get_baud_rate(port, termios, old, 0, uap->port.uartclk/16);
- quot = uart_get_divisor(port, baud);
-
- switch (termios->c_cflag & CSIZE) {
- case CS5:
- lcr_h = UART01x_LCRH_WLEN_5;
- break;
- case CS6:
- lcr_h = UART01x_LCRH_WLEN_6;
- break;
- case CS7:
- lcr_h = UART01x_LCRH_WLEN_7;
- break;
- default: // CS8
- lcr_h = UART01x_LCRH_WLEN_8;
- break;
- }
- if (termios->c_cflag & CSTOPB)
- lcr_h |= UART01x_LCRH_STP2;
- if (termios->c_cflag & PARENB) {
- lcr_h |= UART01x_LCRH_PEN;
- if (!(termios->c_cflag & PARODD))
- lcr_h |= UART01x_LCRH_EPS;
- }
- if (uap->port.fifosize > 1)
- lcr_h |= UART01x_LCRH_FEN;
-
- spin_lock_irqsave(&uap->port.lock, flags);
-
- /*
- * Update the per-port timeout.
- */
- uart_update_timeout(port, termios->c_cflag, baud);
-
- uap->port.read_status_mask = UART01x_RSR_OE;
- if (termios->c_iflag & INPCK)
- uap->port.read_status_mask |= UART01x_RSR_FE | UART01x_RSR_PE;
- if (termios->c_iflag & (BRKINT | PARMRK))
- uap->port.read_status_mask |= UART01x_RSR_BE;
-
- /*
- * Characters to ignore
- */
- uap->port.ignore_status_mask = 0;
- if (termios->c_iflag & IGNPAR)
- uap->port.ignore_status_mask |= UART01x_RSR_FE | UART01x_RSR_PE;
- if (termios->c_iflag & IGNBRK) {
- uap->port.ignore_status_mask |= UART01x_RSR_BE;
- /*
- * If we're ignoring parity and break indicators,
- * ignore overruns too (for real raw support).
- */
- if (termios->c_iflag & IGNPAR)
- uap->port.ignore_status_mask |= UART01x_RSR_OE;
- }
-
- /*
- * Ignore all characters if CREAD is not set.
- */
- if ((termios->c_cflag & CREAD) == 0)
- uap->port.ignore_status_mask |= UART_DUMMY_RSR_RX;
-
- /* first, disable everything */
- old_cr = readb(uap->port.membase + UART010_CR) & ~UART010_CR_MSIE;
-
- if (UART_ENABLE_MS(port, termios->c_cflag))
- old_cr |= UART010_CR_MSIE;
-
- writel(0, uap->port.membase + UART010_CR);
-
- /* Set baud rate */
- quot -= 1;
- writel((quot & 0xf00) >> 8, uap->port.membase + UART010_LCRM);
- writel(quot & 0xff, uap->port.membase + UART010_LCRL);
-
- /*
- * ----------v----------v----------v----------v-----
- * NOTE: MUST BE WRITTEN AFTER UARTLCR_M & UARTLCR_L
- * ----------^----------^----------^----------^-----
- */
- writel(lcr_h, uap->port.membase + UART010_LCRH);
- writel(old_cr, uap->port.membase + UART010_CR);
-
- spin_unlock_irqrestore(&uap->port.lock, flags);
-}
-
-static void pl010_set_ldisc(struct uart_port *port, int new)
-{
- if (new == N_PPS) {
- port->flags |= UPF_HARDPPS_CD;
- pl010_enable_ms(port);
- } else
- port->flags &= ~UPF_HARDPPS_CD;
-}
-
-static const char *pl010_type(struct uart_port *port)
-{
- return port->type == PORT_AMBA ? "AMBA" : NULL;
-}
-
-/*
- * Release the memory region(s) being used by 'port'
- */
-static void pl010_release_port(struct uart_port *port)
-{
- release_mem_region(port->mapbase, UART_PORT_SIZE);
-}
-
-/*
- * Request the memory region(s) being used by 'port'
- */
-static int pl010_request_port(struct uart_port *port)
-{
- return request_mem_region(port->mapbase, UART_PORT_SIZE, "uart-pl010")
- != NULL ? 0 : -EBUSY;
-}
-
-/*
- * Configure/autoconfigure the port.
- */
-static void pl010_config_port(struct uart_port *port, int flags)
-{
- if (flags & UART_CONFIG_TYPE) {
- port->type = PORT_AMBA;
- pl010_request_port(port);
- }
-}
-
-/*
- * verify the new serial_struct (for TIOCSSERIAL).
- */
-static int pl010_verify_port(struct uart_port *port, struct serial_struct *ser)
-{
- int ret = 0;
- if (ser->type != PORT_UNKNOWN && ser->type != PORT_AMBA)
- ret = -EINVAL;
- if (ser->irq < 0 || ser->irq >= nr_irqs)
- ret = -EINVAL;
- if (ser->baud_base < 9600)
- ret = -EINVAL;
- return ret;
-}
-
-static struct uart_ops amba_pl010_pops = {
- .tx_empty = pl010_tx_empty,
- .set_mctrl = pl010_set_mctrl,
- .get_mctrl = pl010_get_mctrl,
- .stop_tx = pl010_stop_tx,
- .start_tx = pl010_start_tx,
- .stop_rx = pl010_stop_rx,
- .enable_ms = pl010_enable_ms,
- .break_ctl = pl010_break_ctl,
- .startup = pl010_startup,
- .shutdown = pl010_shutdown,
- .set_termios = pl010_set_termios,
- .set_ldisc = pl010_set_ldisc,
- .type = pl010_type,
- .release_port = pl010_release_port,
- .request_port = pl010_request_port,
- .config_port = pl010_config_port,
- .verify_port = pl010_verify_port,
-};
-
-static struct uart_amba_port *amba_ports[UART_NR];
-
-#ifdef CONFIG_SERIAL_AMBA_PL010_CONSOLE
-
-static void pl010_console_putchar(struct uart_port *port, int ch)
-{
- struct uart_amba_port *uap = (struct uart_amba_port *)port;
- unsigned int status;
-
- do {
- status = readb(uap->port.membase + UART01x_FR);
- barrier();
- } while (!UART_TX_READY(status));
- writel(ch, uap->port.membase + UART01x_DR);
-}
-
-static void
-pl010_console_write(struct console *co, const char *s, unsigned int count)
-{
- struct uart_amba_port *uap = amba_ports[co->index];
- unsigned int status, old_cr;
-
- clk_enable(uap->clk);
-
- /*
- * First save the CR then disable the interrupts
- */
- old_cr = readb(uap->port.membase + UART010_CR);
- writel(UART01x_CR_UARTEN, uap->port.membase + UART010_CR);
-
- uart_console_write(&uap->port, s, count, pl010_console_putchar);
-
- /*
- * Finally, wait for transmitter to become empty
- * and restore the TCR
- */
- do {
- status = readb(uap->port.membase + UART01x_FR);
- barrier();
- } while (status & UART01x_FR_BUSY);
- writel(old_cr, uap->port.membase + UART010_CR);
-
- clk_disable(uap->clk);
-}
-
-static void __init
-pl010_console_get_options(struct uart_amba_port *uap, int *baud,
- int *parity, int *bits)
-{
- if (readb(uap->port.membase + UART010_CR) & UART01x_CR_UARTEN) {
- unsigned int lcr_h, quot;
- lcr_h = readb(uap->port.membase + UART010_LCRH);
-
- *parity = 'n';
- if (lcr_h & UART01x_LCRH_PEN) {
- if (lcr_h & UART01x_LCRH_EPS)
- *parity = 'e';
- else
- *parity = 'o';
- }
-
- if ((lcr_h & 0x60) == UART01x_LCRH_WLEN_7)
- *bits = 7;
- else
- *bits = 8;
-
- quot = readb(uap->port.membase + UART010_LCRL) |
- readb(uap->port.membase + UART010_LCRM) << 8;
- *baud = uap->port.uartclk / (16 * (quot + 1));
- }
-}
-
-static int __init pl010_console_setup(struct console *co, char *options)
-{
- struct uart_amba_port *uap;
- int baud = 38400;
- int bits = 8;
- int parity = 'n';
- int flow = 'n';
-
- /*
- * Check whether an invalid uart number has been specified, and
- * if so, search for the first available port that does have
- * console support.
- */
- if (co->index >= UART_NR)
- co->index = 0;
- uap = amba_ports[co->index];
- if (!uap)
- return -ENODEV;
-
- uap->port.uartclk = clk_get_rate(uap->clk);
-
- if (options)
- uart_parse_options(options, &baud, &parity, &bits, &flow);
- else
- pl010_console_get_options(uap, &baud, &parity, &bits);
-
- return uart_set_options(&uap->port, co, baud, parity, bits, flow);
-}
-
-static struct uart_driver amba_reg;
-static struct console amba_console = {
- .name = "ttyAM",
- .write = pl010_console_write,
- .device = uart_console_device,
- .setup = pl010_console_setup,
- .flags = CON_PRINTBUFFER,
- .index = -1,
- .data = &amba_reg,
-};
-
-#define AMBA_CONSOLE &amba_console
-#else
-#define AMBA_CONSOLE NULL
-#endif
-
-static struct uart_driver amba_reg = {
- .owner = THIS_MODULE,
- .driver_name = "ttyAM",
- .dev_name = "ttyAM",
- .major = SERIAL_AMBA_MAJOR,
- .minor = SERIAL_AMBA_MINOR,
- .nr = UART_NR,
- .cons = AMBA_CONSOLE,
-};
-
-static int pl010_probe(struct amba_device *dev, struct amba_id *id)
-{
- struct uart_amba_port *uap;
- void __iomem *base;
- int i, ret;
-
- for (i = 0; i < ARRAY_SIZE(amba_ports); i++)
- if (amba_ports[i] == NULL)
- break;
-
- if (i == ARRAY_SIZE(amba_ports)) {
- ret = -EBUSY;
- goto out;
- }
-
- uap = kzalloc(sizeof(struct uart_amba_port), GFP_KERNEL);
- if (!uap) {
- ret = -ENOMEM;
- goto out;
- }
-
- base = ioremap(dev->res.start, resource_size(&dev->res));
- if (!base) {
- ret = -ENOMEM;
- goto free;
- }
-
- uap->clk = clk_get(&dev->dev, NULL);
- if (IS_ERR(uap->clk)) {
- ret = PTR_ERR(uap->clk);
- goto unmap;
- }
-
- uap->port.dev = &dev->dev;
- uap->port.mapbase = dev->res.start;
- uap->port.membase = base;
- uap->port.iotype = UPIO_MEM;
- uap->port.irq = dev->irq[0];
- uap->port.fifosize = 16;
- uap->port.ops = &amba_pl010_pops;
- uap->port.flags = UPF_BOOT_AUTOCONF;
- uap->port.line = i;
- uap->dev = dev;
- uap->data = dev->dev.platform_data;
-
- amba_ports[i] = uap;
-
- amba_set_drvdata(dev, uap);
- ret = uart_add_one_port(&amba_reg, &uap->port);
- if (ret) {
- amba_set_drvdata(dev, NULL);
- amba_ports[i] = NULL;
- clk_put(uap->clk);
- unmap:
- iounmap(base);
- free:
- kfree(uap);
- }
- out:
- return ret;
-}
-
-static int pl010_remove(struct amba_device *dev)
-{
- struct uart_amba_port *uap = amba_get_drvdata(dev);
- int i;
-
- amba_set_drvdata(dev, NULL);
-
- uart_remove_one_port(&amba_reg, &uap->port);
-
- for (i = 0; i < ARRAY_SIZE(amba_ports); i++)
- if (amba_ports[i] == uap)
- amba_ports[i] = NULL;
-
- iounmap(uap->port.membase);
- clk_put(uap->clk);
- kfree(uap);
- return 0;
-}
-
-static int pl010_suspend(struct amba_device *dev, pm_message_t state)
-{
- struct uart_amba_port *uap = amba_get_drvdata(dev);
-
- if (uap)
- uart_suspend_port(&amba_reg, &uap->port);
-
- return 0;
-}
-
-static int pl010_resume(struct amba_device *dev)
-{
- struct uart_amba_port *uap = amba_get_drvdata(dev);
-
- if (uap)
- uart_resume_port(&amba_reg, &uap->port);
-
- return 0;
-}
-
-static struct amba_id pl010_ids[] = {
- {
- .id = 0x00041010,
- .mask = 0x000fffff,
- },
- { 0, 0 },
-};
-
-static struct amba_driver pl010_driver = {
- .drv = {
- .name = "uart-pl010",
- },
- .id_table = pl010_ids,
- .probe = pl010_probe,
- .remove = pl010_remove,
- .suspend = pl010_suspend,
- .resume = pl010_resume,
-};
-
-static int __init pl010_init(void)
-{
- int ret;
-
- printk(KERN_INFO "Serial: AMBA driver\n");
-
- ret = uart_register_driver(&amba_reg);
- if (ret == 0) {
- ret = amba_driver_register(&pl010_driver);
- if (ret)
- uart_unregister_driver(&amba_reg);
- }
- return ret;
-}
-
-static void __exit pl010_exit(void)
-{
- amba_driver_unregister(&pl010_driver);
- uart_unregister_driver(&amba_reg);
-}
-
-module_init(pl010_init);
-module_exit(pl010_exit);
-
-MODULE_AUTHOR("ARM Ltd/Deep Blue Solutions Ltd");
-MODULE_DESCRIPTION("ARM AMBA serial port driver");
-MODULE_LICENSE("GPL");
git.samba.org / sfrench / cifs-2.6.git / blobdiff