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authorGreg Kroah-Hartman <gregkh@suse.de>2011-01-13 12:10:18 -0800
committerGreg Kroah-Hartman <gregkh@suse.de>2011-01-13 12:10:18 -0800
commitab4382d27412e7e3e7c936e8d50d8888dfac3df8 (patch)
tree51d96dea2431140358784b6b426715f37f74fd53 /drivers/serial/sa1100.c
parent728674a7e466628df2aeec6d11a2ae1ef968fb67 (diff)
tty: move drivers/serial/ to drivers/tty/serial/
The serial drivers are really just tty drivers, so move them to drivers/tty/ to make things a bit neater overall. This is part of the tty/serial driver movement proceedure as proposed by Arnd Bergmann and approved by everyone involved a number of months ago. Cc: Arnd Bergmann <arnd@arndb.de> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Rogier Wolff <R.E.Wolff@bitwizard.nl> Cc: Michael H. Warfield <mhw@wittsend.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/serial/sa1100.c')
-rw-r--r--drivers/serial/sa1100.c918
1 files changed, 0 insertions, 918 deletions
diff --git a/drivers/serial/sa1100.c b/drivers/serial/sa1100.c
deleted file mode 100644
index 2199d819a98..00000000000
--- a/drivers/serial/sa1100.c
+++ /dev/null
@@ -1,918 +0,0 @@
-/*
- * linux/drivers/char/sa1100.c
- *
- * Driver for SA11x0 serial ports
- *
- * Based on drivers/char/serial.c, by Linus Torvalds, Theodore Ts'o.
- *
- * 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
- */
-
-#if defined(CONFIG_SERIAL_SA1100_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/platform_device.h>
-#include <linux/tty.h>
-#include <linux/tty_flip.h>
-#include <linux/serial_core.h>
-#include <linux/serial.h>
-#include <linux/io.h>
-
-#include <asm/irq.h>
-#include <mach/hardware.h>
-#include <asm/mach/serial_sa1100.h>
-
-/* We've been assigned a range on the "Low-density serial ports" major */
-#define SERIAL_SA1100_MAJOR 204
-#define MINOR_START 5
-
-#define NR_PORTS 3
-
-#define SA1100_ISR_PASS_LIMIT 256
-
-/*
- * Convert from ignore_status_mask or read_status_mask to UTSR[01]
- */
-#define SM_TO_UTSR0(x) ((x) & 0xff)
-#define SM_TO_UTSR1(x) ((x) >> 8)
-#define UTSR0_TO_SM(x) ((x))
-#define UTSR1_TO_SM(x) ((x) << 8)
-
-#define UART_GET_UTCR0(sport) __raw_readl((sport)->port.membase + UTCR0)
-#define UART_GET_UTCR1(sport) __raw_readl((sport)->port.membase + UTCR1)
-#define UART_GET_UTCR2(sport) __raw_readl((sport)->port.membase + UTCR2)
-#define UART_GET_UTCR3(sport) __raw_readl((sport)->port.membase + UTCR3)
-#define UART_GET_UTSR0(sport) __raw_readl((sport)->port.membase + UTSR0)
-#define UART_GET_UTSR1(sport) __raw_readl((sport)->port.membase + UTSR1)
-#define UART_GET_CHAR(sport) __raw_readl((sport)->port.membase + UTDR)
-
-#define UART_PUT_UTCR0(sport,v) __raw_writel((v),(sport)->port.membase + UTCR0)
-#define UART_PUT_UTCR1(sport,v) __raw_writel((v),(sport)->port.membase + UTCR1)
-#define UART_PUT_UTCR2(sport,v) __raw_writel((v),(sport)->port.membase + UTCR2)
-#define UART_PUT_UTCR3(sport,v) __raw_writel((v),(sport)->port.membase + UTCR3)
-#define UART_PUT_UTSR0(sport,v) __raw_writel((v),(sport)->port.membase + UTSR0)
-#define UART_PUT_UTSR1(sport,v) __raw_writel((v),(sport)->port.membase + UTSR1)
-#define UART_PUT_CHAR(sport,v) __raw_writel((v),(sport)->port.membase + UTDR)
-
-/*
- * This is the size of our serial port register set.
- */
-#define UART_PORT_SIZE 0x24
-
-/*
- * This determines how often we check the modem status signals
- * for any change. They generally aren't connected to an IRQ
- * so we have to poll them. We also check immediately before
- * filling the TX fifo incase CTS has been dropped.
- */
-#define MCTRL_TIMEOUT (250*HZ/1000)
-
-struct sa1100_port {
- struct uart_port port;
- struct timer_list timer;
- unsigned int old_status;
-};
-
-/*
- * Handle any change of modem status signal since we were last called.
- */
-static void sa1100_mctrl_check(struct sa1100_port *sport)
-{
- unsigned int status, changed;
-
- status = sport->port.ops->get_mctrl(&sport->port);
- changed = status ^ sport->old_status;
-
- if (changed == 0)
- return;
-
- sport->old_status = status;
-
- if (changed & TIOCM_RI)
- sport->port.icount.rng++;
- if (changed & TIOCM_DSR)
- sport->port.icount.dsr++;
- if (changed & TIOCM_CAR)
- uart_handle_dcd_change(&sport->port, status & TIOCM_CAR);
- if (changed & TIOCM_CTS)
- uart_handle_cts_change(&sport->port, status & TIOCM_CTS);
-
- wake_up_interruptible(&sport->port.state->port.delta_msr_wait);
-}
-
-/*
- * This is our per-port timeout handler, for checking the
- * modem status signals.
- */
-static void sa1100_timeout(unsigned long data)
-{
- struct sa1100_port *sport = (struct sa1100_port *)data;
- unsigned long flags;
-
- if (sport->port.state) {
- spin_lock_irqsave(&sport->port.lock, flags);
- sa1100_mctrl_check(sport);
- spin_unlock_irqrestore(&sport->port.lock, flags);
-
- mod_timer(&sport->timer, jiffies + MCTRL_TIMEOUT);
- }
-}
-
-/*
- * interrupts disabled on entry
- */
-static void sa1100_stop_tx(struct uart_port *port)
-{
- struct sa1100_port *sport = (struct sa1100_port *)port;
- u32 utcr3;
-
- utcr3 = UART_GET_UTCR3(sport);
- UART_PUT_UTCR3(sport, utcr3 & ~UTCR3_TIE);
- sport->port.read_status_mask &= ~UTSR0_TO_SM(UTSR0_TFS);
-}
-
-/*
- * port locked and interrupts disabled
- */
-static void sa1100_start_tx(struct uart_port *port)
-{
- struct sa1100_port *sport = (struct sa1100_port *)port;
- u32 utcr3;
-
- utcr3 = UART_GET_UTCR3(sport);
- sport->port.read_status_mask |= UTSR0_TO_SM(UTSR0_TFS);
- UART_PUT_UTCR3(sport, utcr3 | UTCR3_TIE);
-}
-
-/*
- * Interrupts enabled
- */
-static void sa1100_stop_rx(struct uart_port *port)
-{
- struct sa1100_port *sport = (struct sa1100_port *)port;
- u32 utcr3;
-
- utcr3 = UART_GET_UTCR3(sport);
- UART_PUT_UTCR3(sport, utcr3 & ~UTCR3_RIE);
-}
-
-/*
- * Set the modem control timer to fire immediately.
- */
-static void sa1100_enable_ms(struct uart_port *port)
-{
- struct sa1100_port *sport = (struct sa1100_port *)port;
-
- mod_timer(&sport->timer, jiffies);
-}
-
-static void
-sa1100_rx_chars(struct sa1100_port *sport)
-{
- struct tty_struct *tty = sport->port.state->port.tty;
- unsigned int status, ch, flg;
-
- status = UTSR1_TO_SM(UART_GET_UTSR1(sport)) |
- UTSR0_TO_SM(UART_GET_UTSR0(sport));
- while (status & UTSR1_TO_SM(UTSR1_RNE)) {
- ch = UART_GET_CHAR(sport);
-
- sport->port.icount.rx++;
-
- flg = TTY_NORMAL;
-
- /*
- * note that the error handling code is
- * out of the main execution path
- */
- if (status & UTSR1_TO_SM(UTSR1_PRE | UTSR1_FRE | UTSR1_ROR)) {
- if (status & UTSR1_TO_SM(UTSR1_PRE))
- sport->port.icount.parity++;
- else if (status & UTSR1_TO_SM(UTSR1_FRE))
- sport->port.icount.frame++;
- if (status & UTSR1_TO_SM(UTSR1_ROR))
- sport->port.icount.overrun++;
-
- status &= sport->port.read_status_mask;
-
- if (status & UTSR1_TO_SM(UTSR1_PRE))
- flg = TTY_PARITY;
- else if (status & UTSR1_TO_SM(UTSR1_FRE))
- flg = TTY_FRAME;
-
-#ifdef SUPPORT_SYSRQ
- sport->port.sysrq = 0;
-#endif
- }
-
- if (uart_handle_sysrq_char(&sport->port, ch))
- goto ignore_char;
-
- uart_insert_char(&sport->port, status, UTSR1_TO_SM(UTSR1_ROR), ch, flg);
-
- ignore_char:
- status = UTSR1_TO_SM(UART_GET_UTSR1(sport)) |
- UTSR0_TO_SM(UART_GET_UTSR0(sport));
- }
- tty_flip_buffer_push(tty);
-}
-
-static void sa1100_tx_chars(struct sa1100_port *sport)
-{
- struct circ_buf *xmit = &sport->port.state->xmit;
-
- if (sport->port.x_char) {
- UART_PUT_CHAR(sport, sport->port.x_char);
- sport->port.icount.tx++;
- sport->port.x_char = 0;
- return;
- }
-
- /*
- * Check the modem control lines before
- * transmitting anything.
- */
- sa1100_mctrl_check(sport);
-
- if (uart_circ_empty(xmit) || uart_tx_stopped(&sport->port)) {
- sa1100_stop_tx(&sport->port);
- return;
- }
-
- /*
- * Tried using FIFO (not checking TNF) for fifo fill:
- * still had the '4 bytes repeated' problem.
- */
- while (UART_GET_UTSR1(sport) & UTSR1_TNF) {
- UART_PUT_CHAR(sport, xmit->buf[xmit->tail]);
- xmit->tail = (xmit->tail + 1) & (UART_XMIT_SIZE - 1);
- sport->port.icount.tx++;
- if (uart_circ_empty(xmit))
- break;
- }
-
- if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS)
- uart_write_wakeup(&sport->port);
-
- if (uart_circ_empty(xmit))
- sa1100_stop_tx(&sport->port);
-}
-
-static irqreturn_t sa1100_int(int irq, void *dev_id)
-{
- struct sa1100_port *sport = dev_id;
- unsigned int status, pass_counter = 0;
-
- spin_lock(&sport->port.lock);
- status = UART_GET_UTSR0(sport);
- status &= SM_TO_UTSR0(sport->port.read_status_mask) | ~UTSR0_TFS;
- do {
- if (status & (UTSR0_RFS | UTSR0_RID)) {
- /* Clear the receiver idle bit, if set */
- if (status & UTSR0_RID)
- UART_PUT_UTSR0(sport, UTSR0_RID);
- sa1100_rx_chars(sport);
- }
-
- /* Clear the relevant break bits */
- if (status & (UTSR0_RBB | UTSR0_REB))
- UART_PUT_UTSR0(sport, status & (UTSR0_RBB | UTSR0_REB));
-
- if (status & UTSR0_RBB)
- sport->port.icount.brk++;
-
- if (status & UTSR0_REB)
- uart_handle_break(&sport->port);
-
- if (status & UTSR0_TFS)
- sa1100_tx_chars(sport);
- if (pass_counter++ > SA1100_ISR_PASS_LIMIT)
- break;
- status = UART_GET_UTSR0(sport);
- status &= SM_TO_UTSR0(sport->port.read_status_mask) |
- ~UTSR0_TFS;
- } while (status & (UTSR0_TFS | UTSR0_RFS | UTSR0_RID));
- spin_unlock(&sport->port.lock);
-
- return IRQ_HANDLED;
-}
-
-/*
- * Return TIOCSER_TEMT when transmitter is not busy.
- */
-static unsigned int sa1100_tx_empty(struct uart_port *port)
-{
- struct sa1100_port *sport = (struct sa1100_port *)port;
-
- return UART_GET_UTSR1(sport) & UTSR1_TBY ? 0 : TIOCSER_TEMT;
-}
-
-static unsigned int sa1100_get_mctrl(struct uart_port *port)
-{
- return TIOCM_CTS | TIOCM_DSR | TIOCM_CAR;
-}
-
-static void sa1100_set_mctrl(struct uart_port *port, unsigned int mctrl)
-{
-}
-
-/*
- * Interrupts always disabled.
- */
-static void sa1100_break_ctl(struct uart_port *port, int break_state)
-{
- struct sa1100_port *sport = (struct sa1100_port *)port;
- unsigned long flags;
- unsigned int utcr3;
-
- spin_lock_irqsave(&sport->port.lock, flags);
- utcr3 = UART_GET_UTCR3(sport);
- if (break_state == -1)
- utcr3 |= UTCR3_BRK;
- else
- utcr3 &= ~UTCR3_BRK;
- UART_PUT_UTCR3(sport, utcr3);
- spin_unlock_irqrestore(&sport->port.lock, flags);
-}
-
-static int sa1100_startup(struct uart_port *port)
-{
- struct sa1100_port *sport = (struct sa1100_port *)port;
- int retval;
-
- /*
- * Allocate the IRQ
- */
- retval = request_irq(sport->port.irq, sa1100_int, 0,
- "sa11x0-uart", sport);
- if (retval)
- return retval;
-
- /*
- * Finally, clear and enable interrupts
- */
- UART_PUT_UTSR0(sport, -1);
- UART_PUT_UTCR3(sport, UTCR3_RXE | UTCR3_TXE | UTCR3_RIE);
-
- /*
- * Enable modem status interrupts
- */
- spin_lock_irq(&sport->port.lock);
- sa1100_enable_ms(&sport->port);
- spin_unlock_irq(&sport->port.lock);
-
- return 0;
-}
-
-static void sa1100_shutdown(struct uart_port *port)
-{
- struct sa1100_port *sport = (struct sa1100_port *)port;
-
- /*
- * Stop our timer.
- */
- del_timer_sync(&sport->timer);
-
- /*
- * Free the interrupt
- */
- free_irq(sport->port.irq, sport);
-
- /*
- * Disable all interrupts, port and break condition.
- */
- UART_PUT_UTCR3(sport, 0);
-}
-
-static void
-sa1100_set_termios(struct uart_port *port, struct ktermios *termios,
- struct ktermios *old)
-{
- struct sa1100_port *sport = (struct sa1100_port *)port;
- unsigned long flags;
- unsigned int utcr0, old_utcr3, baud, quot;
- unsigned int old_csize = old ? old->c_cflag & CSIZE : CS8;
-
- /*
- * We only support CS7 and CS8.
- */
- while ((termios->c_cflag & CSIZE) != CS7 &&
- (termios->c_cflag & CSIZE) != CS8) {
- termios->c_cflag &= ~CSIZE;
- termios->c_cflag |= old_csize;
- old_csize = CS8;
- }
-
- if ((termios->c_cflag & CSIZE) == CS8)
- utcr0 = UTCR0_DSS;
- else
- utcr0 = 0;
-
- if (termios->c_cflag & CSTOPB)
- utcr0 |= UTCR0_SBS;
- if (termios->c_cflag & PARENB) {
- utcr0 |= UTCR0_PE;
- if (!(termios->c_cflag & PARODD))
- utcr0 |= UTCR0_OES;
- }
-
- /*
- * Ask the core to calculate the divisor for us.
- */
- baud = uart_get_baud_rate(port, termios, old, 0, port->uartclk/16);
- quot = uart_get_divisor(port, baud);
-
- spin_lock_irqsave(&sport->port.lock, flags);
-
- sport->port.read_status_mask &= UTSR0_TO_SM(UTSR0_TFS);
- sport->port.read_status_mask |= UTSR1_TO_SM(UTSR1_ROR);
- if (termios->c_iflag & INPCK)
- sport->port.read_status_mask |=
- UTSR1_TO_SM(UTSR1_FRE | UTSR1_PRE);
- if (termios->c_iflag & (BRKINT | PARMRK))
- sport->port.read_status_mask |=
- UTSR0_TO_SM(UTSR0_RBB | UTSR0_REB);
-
- /*
- * Characters to ignore
- */
- sport->port.ignore_status_mask = 0;
- if (termios->c_iflag & IGNPAR)
- sport->port.ignore_status_mask |=
- UTSR1_TO_SM(UTSR1_FRE | UTSR1_PRE);
- if (termios->c_iflag & IGNBRK) {
- sport->port.ignore_status_mask |=
- UTSR0_TO_SM(UTSR0_RBB | UTSR0_REB);
- /*
- * If we're ignoring parity and break indicators,
- * ignore overruns too (for real raw support).
- */
- if (termios->c_iflag & IGNPAR)
- sport->port.ignore_status_mask |=
- UTSR1_TO_SM(UTSR1_ROR);
- }
-
- del_timer_sync(&sport->timer);
-
- /*
- * Update the per-port timeout.
- */
- uart_update_timeout(port, termios->c_cflag, baud);
-
- /*
- * disable interrupts and drain transmitter
- */
- old_utcr3 = UART_GET_UTCR3(sport);
- UART_PUT_UTCR3(sport, old_utcr3 & ~(UTCR3_RIE | UTCR3_TIE));
-
- while (UART_GET_UTSR1(sport) & UTSR1_TBY)
- barrier();
-
- /* then, disable everything */
- UART_PUT_UTCR3(sport, 0);
-
- /* set the parity, stop bits and data size */
- UART_PUT_UTCR0(sport, utcr0);
-
- /* set the baud rate */
- quot -= 1;
- UART_PUT_UTCR1(sport, ((quot & 0xf00) >> 8));
- UART_PUT_UTCR2(sport, (quot & 0xff));
-
- UART_PUT_UTSR0(sport, -1);
-
- UART_PUT_UTCR3(sport, old_utcr3);
-
- if (UART_ENABLE_MS(&sport->port, termios->c_cflag))
- sa1100_enable_ms(&sport->port);
-
- spin_unlock_irqrestore(&sport->port.lock, flags);
-}
-
-static const char *sa1100_type(struct uart_port *port)
-{
- struct sa1100_port *sport = (struct sa1100_port *)port;
-
- return sport->port.type == PORT_SA1100 ? "SA1100" : NULL;
-}
-
-/*
- * Release the memory region(s) being used by 'port'.
- */
-static void sa1100_release_port(struct uart_port *port)
-{
- struct sa1100_port *sport = (struct sa1100_port *)port;
-
- release_mem_region(sport->port.mapbase, UART_PORT_SIZE);
-}
-
-/*
- * Request the memory region(s) being used by 'port'.
- */
-static int sa1100_request_port(struct uart_port *port)
-{
- struct sa1100_port *sport = (struct sa1100_port *)port;
-
- return request_mem_region(sport->port.mapbase, UART_PORT_SIZE,
- "sa11x0-uart") != NULL ? 0 : -EBUSY;
-}
-
-/*
- * Configure/autoconfigure the port.
- */
-static void sa1100_config_port(struct uart_port *port, int flags)
-{
- struct sa1100_port *sport = (struct sa1100_port *)port;
-
- if (flags & UART_CONFIG_TYPE &&
- sa1100_request_port(&sport->port) == 0)
- sport->port.type = PORT_SA1100;
-}
-
-/*
- * Verify the new serial_struct (for TIOCSSERIAL).
- * The only change we allow are to the flags and type, and
- * even then only between PORT_SA1100 and PORT_UNKNOWN
- */
-static int
-sa1100_verify_port(struct uart_port *port, struct serial_struct *ser)
-{
- struct sa1100_port *sport = (struct sa1100_port *)port;
- int ret = 0;
-
- if (ser->type != PORT_UNKNOWN && ser->type != PORT_SA1100)
- ret = -EINVAL;
- if (sport->port.irq != ser->irq)
- ret = -EINVAL;
- if (ser->io_type != SERIAL_IO_MEM)
- ret = -EINVAL;
- if (sport->port.uartclk / 16 != ser->baud_base)
- ret = -EINVAL;
- if ((void *)sport->port.mapbase != ser->iomem_base)
- ret = -EINVAL;
- if (sport->port.iobase != ser->port)
- ret = -EINVAL;
- if (ser->hub6 != 0)
- ret = -EINVAL;
- return ret;
-}
-
-static struct uart_ops sa1100_pops = {
- .tx_empty = sa1100_tx_empty,
- .set_mctrl = sa1100_set_mctrl,
- .get_mctrl = sa1100_get_mctrl,
- .stop_tx = sa1100_stop_tx,
- .start_tx = sa1100_start_tx,
- .stop_rx = sa1100_stop_rx,
- .enable_ms = sa1100_enable_ms,
- .break_ctl = sa1100_break_ctl,
- .startup = sa1100_startup,
- .shutdown = sa1100_shutdown,
- .set_termios = sa1100_set_termios,
- .type = sa1100_type,
- .release_port = sa1100_release_port,
- .request_port = sa1100_request_port,
- .config_port = sa1100_config_port,
- .verify_port = sa1100_verify_port,
-};
-
-static struct sa1100_port sa1100_ports[NR_PORTS];
-
-/*
- * Setup the SA1100 serial ports. Note that we don't include the IrDA
- * port here since we have our own SIR/FIR driver (see drivers/net/irda)
- *
- * Note also that we support "console=ttySAx" where "x" is either 0 or 1.
- * Which serial port this ends up being depends on the machine you're
- * running this kernel on. I'm not convinced that this is a good idea,
- * but that's the way it traditionally works.
- *
- * Note that NanoEngine UART3 becomes UART2, and UART2 is no longer
- * used here.
- */
-static void __init sa1100_init_ports(void)
-{
- static int first = 1;
- int i;
-
- if (!first)
- return;
- first = 0;
-
- for (i = 0; i < NR_PORTS; i++) {
- sa1100_ports[i].port.uartclk = 3686400;
- sa1100_ports[i].port.ops = &sa1100_pops;
- sa1100_ports[i].port.fifosize = 8;
- sa1100_ports[i].port.line = i;
- sa1100_ports[i].port.iotype = UPIO_MEM;
- init_timer(&sa1100_ports[i].timer);
- sa1100_ports[i].timer.function = sa1100_timeout;
- sa1100_ports[i].timer.data = (unsigned long)&sa1100_ports[i];
- }
-
- /*
- * make transmit lines outputs, so that when the port
- * is closed, the output is in the MARK state.
- */
- PPDR |= PPC_TXD1 | PPC_TXD3;
- PPSR |= PPC_TXD1 | PPC_TXD3;
-}
-
-void __devinit sa1100_register_uart_fns(struct sa1100_port_fns *fns)
-{
- if (fns->get_mctrl)
- sa1100_pops.get_mctrl = fns->get_mctrl;
- if (fns->set_mctrl)
- sa1100_pops.set_mctrl = fns->set_mctrl;
-
- sa1100_pops.pm = fns->pm;
- sa1100_pops.set_wake = fns->set_wake;
-}
-
-void __init sa1100_register_uart(int idx, int port)
-{
- if (idx >= NR_PORTS) {
- printk(KERN_ERR "%s: bad index number %d\n", __func__, idx);
- return;
- }
-
- switch (port) {
- case 1:
- sa1100_ports[idx].port.membase = (void __iomem *)&Ser1UTCR0;
- sa1100_ports[idx].port.mapbase = _Ser1UTCR0;
- sa1100_ports[idx].port.irq = IRQ_Ser1UART;
- sa1100_ports[idx].port.flags = UPF_BOOT_AUTOCONF;
- break;
-
- case 2:
- sa1100_ports[idx].port.membase = (void __iomem *)&Ser2UTCR0;
- sa1100_ports[idx].port.mapbase = _Ser2UTCR0;
- sa1100_ports[idx].port.irq = IRQ_Ser2ICP;
- sa1100_ports[idx].port.flags = UPF_BOOT_AUTOCONF;
- break;
-
- case 3:
- sa1100_ports[idx].port.membase = (void __iomem *)&Ser3UTCR0;
- sa1100_ports[idx].port.mapbase = _Ser3UTCR0;
- sa1100_ports[idx].port.irq = IRQ_Ser3UART;
- sa1100_ports[idx].port.flags = UPF_BOOT_AUTOCONF;
- break;
-
- default:
- printk(KERN_ERR "%s: bad port number %d\n", __func__, port);
- }
-}
-
-
-#ifdef CONFIG_SERIAL_SA1100_CONSOLE
-static void sa1100_console_putchar(struct uart_port *port, int ch)
-{
- struct sa1100_port *sport = (struct sa1100_port *)port;
-
- while (!(UART_GET_UTSR1(sport) & UTSR1_TNF))
- barrier();
- UART_PUT_CHAR(sport, ch);
-}
-
-/*
- * Interrupts are disabled on entering
- */
-static void
-sa1100_console_write(struct console *co, const char *s, unsigned int count)
-{
- struct sa1100_port *sport = &sa1100_ports[co->index];
- unsigned int old_utcr3, status;
-
- /*
- * First, save UTCR3 and then disable interrupts
- */
- old_utcr3 = UART_GET_UTCR3(sport);
- UART_PUT_UTCR3(sport, (old_utcr3 & ~(UTCR3_RIE | UTCR3_TIE)) |
- UTCR3_TXE);
-
- uart_console_write(&sport->port, s, count, sa1100_console_putchar);
-
- /*
- * Finally, wait for transmitter to become empty
- * and restore UTCR3
- */
- do {
- status = UART_GET_UTSR1(sport);
- } while (status & UTSR1_TBY);
- UART_PUT_UTCR3(sport, old_utcr3);
-}
-
-/*
- * If the port was already initialised (eg, by a boot loader),
- * try to determine the current setup.
- */
-static void __init
-sa1100_console_get_options(struct sa1100_port *sport, int *baud,
- int *parity, int *bits)
-{
- unsigned int utcr3;
-
- utcr3 = UART_GET_UTCR3(sport) & (UTCR3_RXE | UTCR3_TXE);
- if (utcr3 == (UTCR3_RXE | UTCR3_TXE)) {
- /* ok, the port was enabled */
- unsigned int utcr0, quot;
-
- utcr0 = UART_GET_UTCR0(sport);
-
- *parity = 'n';
- if (utcr0 & UTCR0_PE) {
- if (utcr0 & UTCR0_OES)
- *parity = 'e';
- else
- *parity = 'o';
- }
-
- if (utcr0 & UTCR0_DSS)
- *bits = 8;
- else
- *bits = 7;
-
- quot = UART_GET_UTCR2(sport) | UART_GET_UTCR1(sport) << 8;
- quot &= 0xfff;
- *baud = sport->port.uartclk / (16 * (quot + 1));
- }
-}
-
-static int __init
-sa1100_console_setup(struct console *co, char *options)
-{
- struct sa1100_port *sport;
- int baud = 9600;
- 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 == -1 || co->index >= NR_PORTS)
- co->index = 0;
- sport = &sa1100_ports[co->index];
-
- if (options)
- uart_parse_options(options, &baud, &parity, &bits, &flow);
- else
- sa1100_console_get_options(sport, &baud, &parity, &bits);
-
- return uart_set_options(&sport->port, co, baud, parity, bits, flow);
-}
-
-static struct uart_driver sa1100_reg;
-static struct console sa1100_console = {
- .name = "ttySA",
- .write = sa1100_console_write,
- .device = uart_console_device,
- .setup = sa1100_console_setup,
- .flags = CON_PRINTBUFFER,
- .index = -1,
- .data = &sa1100_reg,
-};
-
-static int __init sa1100_rs_console_init(void)
-{
- sa1100_init_ports();
- register_console(&sa1100_console);
- return 0;
-}
-console_initcall(sa1100_rs_console_init);
-
-#define SA1100_CONSOLE &sa1100_console
-#else
-#define SA1100_CONSOLE NULL
-#endif
-
-static struct uart_driver sa1100_reg = {
- .owner = THIS_MODULE,
- .driver_name = "ttySA",
- .dev_name = "ttySA",
- .major = SERIAL_SA1100_MAJOR,
- .minor = MINOR_START,
- .nr = NR_PORTS,
- .cons = SA1100_CONSOLE,
-};
-
-static int sa1100_serial_suspend(struct platform_device *dev, pm_message_t state)
-{
- struct sa1100_port *sport = platform_get_drvdata(dev);
-
- if (sport)
- uart_suspend_port(&sa1100_reg, &sport->port);
-
- return 0;
-}
-
-static int sa1100_serial_resume(struct platform_device *dev)
-{
- struct sa1100_port *sport = platform_get_drvdata(dev);
-
- if (sport)
- uart_resume_port(&sa1100_reg, &sport->port);
-
- return 0;
-}
-
-static int sa1100_serial_probe(struct platform_device *dev)
-{
- struct resource *res = dev->resource;
- int i;
-
- for (i = 0; i < dev->num_resources; i++, res++)
- if (res->flags & IORESOURCE_MEM)
- break;
-
- if (i < dev->num_resources) {
- for (i = 0; i < NR_PORTS; i++) {
- if (sa1100_ports[i].port.mapbase != res->start)
- continue;
-
- sa1100_ports[i].port.dev = &dev->dev;
- uart_add_one_port(&sa1100_reg, &sa1100_ports[i].port);
- platform_set_drvdata(dev, &sa1100_ports[i]);
- break;
- }
- }
-
- return 0;
-}
-
-static int sa1100_serial_remove(struct platform_device *pdev)
-{
- struct sa1100_port *sport = platform_get_drvdata(pdev);
-
- platform_set_drvdata(pdev, NULL);
-
- if (sport)
- uart_remove_one_port(&sa1100_reg, &sport->port);
-
- return 0;
-}
-
-static struct platform_driver sa11x0_serial_driver = {
- .probe = sa1100_serial_probe,
- .remove = sa1100_serial_remove,
- .suspend = sa1100_serial_suspend,
- .resume = sa1100_serial_resume,
- .driver = {
- .name = "sa11x0-uart",
- .owner = THIS_MODULE,
- },
-};
-
-static int __init sa1100_serial_init(void)
-{
- int ret;
-
- printk(KERN_INFO "Serial: SA11x0 driver\n");
-
- sa1100_init_ports();
-
- ret = uart_register_driver(&sa1100_reg);
- if (ret == 0) {
- ret = platform_driver_register(&sa11x0_serial_driver);
- if (ret)
- uart_unregister_driver(&sa1100_reg);
- }
- return ret;
-}
-
-static void __exit sa1100_serial_exit(void)
-{
- platform_driver_unregister(&sa11x0_serial_driver);
- uart_unregister_driver(&sa1100_reg);
-}
-
-module_init(sa1100_serial_init);
-module_exit(sa1100_serial_exit);
-
-MODULE_AUTHOR("Deep Blue Solutions Ltd");
-MODULE_DESCRIPTION("SA1100 generic serial port driver");
-MODULE_LICENSE("GPL");
-MODULE_ALIAS_CHARDEV_MAJOR(SERIAL_SA1100_MAJOR);
-MODULE_ALIAS("platform:sa11x0-uart");