/*
- * linux/drivers/char/21285.c
+ * linux/drivers/serial/21285.c
*
* Driver for the serial port on the 21285 StrongArm-110 core logic chip.
*
* Based on drivers/char/serial.c
- *
- * $Id: 21285.c,v 1.37 2002/07/28 10:03:27 rmk Exp $
*/
-#include <linux/config.h>
#include <linux/module.h>
#include <linux/tty.h>
#include <linux/ioport.h>
#include <linux/tty_flip.h>
#include <linux/serial_core.h>
#include <linux/serial.h>
+#include <linux/io.h>
-#include <asm/io.h>
#include <asm/irq.h>
#include <asm/mach-types.h>
#include <asm/hardware/dec21285.h>
-#include <asm/hardware.h>
+#include <mach/hardware.h>
#define BAUD_BASE (mem_fclk_21285/64)
* int((BAUD_BASE - (baud >> 1)) / baud)
*/
-static void
-serial21285_stop_tx(struct uart_port *port, unsigned int tty_stop)
+static void serial21285_stop_tx(struct uart_port *port)
{
if (tx_enabled(port)) {
- disable_irq(IRQ_CONTX);
+ disable_irq_nosync(IRQ_CONTX);
tx_enabled(port) = 0;
}
}
-static void
-serial21285_start_tx(struct uart_port *port, unsigned int tty_start)
+static void serial21285_start_tx(struct uart_port *port)
{
if (!tx_enabled(port)) {
enable_irq(IRQ_CONTX);
static void serial21285_stop_rx(struct uart_port *port)
{
if (rx_enabled(port)) {
- disable_irq(IRQ_CONRX);
+ disable_irq_nosync(IRQ_CONRX);
rx_enabled(port) = 0;
}
}
{
}
-static irqreturn_t serial21285_rx_chars(int irq, void *dev_id, struct pt_regs *regs)
+static irqreturn_t serial21285_rx_chars(int irq, void *dev_id)
{
struct uart_port *port = dev_id;
- struct tty_struct *tty = port->info->tty;
+ struct tty_struct *tty = port->state->port.tty;
unsigned int status, ch, flag, rxs, max_count = 256;
status = *CSR_UARTFLG;
while (!(status & 0x10) && max_count--) {
- if (tty->flip.count >= TTY_FLIPBUF_SIZE) {
- if (tty->low_latency)
- tty_flip_buffer_push(tty);
- /*
- * If this failed then we will throw away the
- * bytes but must do so to clear interrupts
- */
- }
-
ch = *CSR_UARTDR;
flag = TTY_NORMAL;
port->icount.rx++;
rxs = *CSR_RXSTAT | RXSTAT_DUMMY_READ;
- if (rxs & RXSTAT_ANYERR) {
+ if (unlikely(rxs & RXSTAT_ANYERR)) {
if (rxs & RXSTAT_PARITY)
port->icount.parity++;
else if (rxs & RXSTAT_FRAME)
flag = TTY_FRAME;
}
- if ((rxs & port->ignore_status_mask) == 0) {
- tty_insert_flip_char(tty, ch, flag);
- }
- if ((rxs & RXSTAT_OVERRUN) &&
- tty->flip.count < TTY_FLIPBUF_SIZE) {
- /*
- * Overrun is special, since it's reported
- * immediately, and doesn't affect the current
- * character.
- */
- tty_insert_flip_char(tty, 0, TTY_OVERRUN);
- }
+ uart_insert_char(port, rxs, RXSTAT_OVERRUN, ch, flag);
+
status = *CSR_UARTFLG;
}
tty_flip_buffer_push(tty);
return IRQ_HANDLED;
}
-static irqreturn_t serial21285_tx_chars(int irq, void *dev_id, struct pt_regs *regs)
+static irqreturn_t serial21285_tx_chars(int irq, void *dev_id)
{
struct uart_port *port = dev_id;
- struct circ_buf *xmit = &port->info->xmit;
+ struct circ_buf *xmit = &port->state->xmit;
int count = 256;
if (port->x_char) {
goto out;
}
if (uart_circ_empty(xmit) || uart_tx_stopped(port)) {
- serial21285_stop_tx(port, 0);
+ serial21285_stop_tx(port);
goto out;
}
uart_write_wakeup(port);
if (uart_circ_empty(xmit))
- serial21285_stop_tx(port, 0);
+ serial21285_stop_tx(port);
out:
return IRQ_HANDLED;
}
static void
-serial21285_set_termios(struct uart_port *port, struct termios *termios,
- struct termios *old)
+serial21285_set_termios(struct uart_port *port, struct ktermios *termios,
+ struct ktermios *old)
{
unsigned long flags;
unsigned int baud, quot, h_lcr;
baud = uart_get_baud_rate(port, termios, old, 0, port->uartclk/16);
quot = uart_get_divisor(port, baud);
+ if (port->state && port->state->port.tty) {
+ struct tty_struct *tty = port->state->port.tty;
+ unsigned int b = port->uartclk / (16 * quot);
+ tty_encode_baud_rate(tty, b, b);
+ }
+
switch (termios->c_cflag & CSIZE) {
case CS5:
h_lcr = 0x00;
static struct uart_port serial21285_port = {
.mapbase = 0x42000160,
- .iotype = SERIAL_IO_MEM,
+ .iotype = UPIO_MEM,
.irq = NO_IRQ,
.fifosize = 16,
.ops = &serial21285_ops,
- .flags = ASYNC_BOOT_AUTOCONF,
+ .flags = UPF_BOOT_AUTOCONF,
};
static void serial21285_setup_ports(void)
}
#ifdef CONFIG_SERIAL_21285_CONSOLE
+static void serial21285_console_putchar(struct uart_port *port, int ch)
+{
+ while (*CSR_UARTFLG & 0x20)
+ barrier();
+ *CSR_UARTDR = ch;
+}
static void
serial21285_console_write(struct console *co, const char *s,
unsigned int count)
{
- int i;
-
- for (i = 0; i < count; i++) {
- while (*CSR_UARTFLG & 0x20)
- barrier();
- *CSR_UARTDR = s[i];
- if (s[i] == '\n') {
- while (*CSR_UARTFLG & 0x20)
- barrier();
- *CSR_UARTDR = '\r';
- }
- }
+ uart_console_write(&serial21285_port, s, count, serial21285_console_putchar);
}
static void __init
return uart_set_options(port, co, baud, parity, bits, flow);
}
-extern struct uart_driver serial21285_reg;
+static struct uart_driver serial21285_reg;
static struct console serial21285_console =
{
.owner = THIS_MODULE,
.driver_name = "ttyFB",
.dev_name = "ttyFB",
- .devfs_name = "ttyFB",
.major = SERIAL_21285_MAJOR,
.minor = SERIAL_21285_MINOR,
.nr = 1,
{
int ret;
- printk(KERN_INFO "Serial: 21285 driver $Revision: 1.37 $\n");
+ printk(KERN_INFO "Serial: 21285 driver\n");
serial21285_setup_ports();
module_exit(serial21285_exit);
MODULE_LICENSE("GPL");
-MODULE_DESCRIPTION("Intel Footbridge (21285) serial driver $Revision: 1.37 $");
+MODULE_DESCRIPTION("Intel Footbridge (21285) serial driver");
MODULE_ALIAS_CHARDEV(SERIAL_21285_MAJOR, SERIAL_21285_MINOR);
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff