-/* $Id: su.c,v 1.55 2002/01/08 16:00:16 davem Exp $
+/*
* su.c: Small serial driver for keyboard/mouse interface on sparc32/PCI
*
* Copyright (C) 1997 Eddie C. Dost (ecd@skynet.be)
#include <linux/module.h>
#include <linux/kernel.h>
-#include <linux/sched.h>
#include <linux/spinlock.h>
#include <linux/errno.h>
#include <linux/tty.h>
#include <linux/serial_reg.h>
#include <linux/init.h>
#include <linux/delay.h>
+#include <linux/of_device.h>
#include <asm/io.h>
#include <asm/irq.h>
#include <asm/prom.h>
-#include <asm/of_device.h>
#if defined(CONFIG_SERIAL_SUNSU_CONSOLE) && defined(CONFIG_MAGIC_SYSRQ)
#define SUPPORT_SYSRQ
}
static struct tty_struct *
-receive_chars(struct uart_sunsu_port *up, unsigned char *status, struct pt_regs *regs)
+receive_chars(struct uart_sunsu_port *up, unsigned char *status)
{
- struct tty_struct *tty = up->port.info->tty;
+ struct tty_struct *tty = up->port.info->port.tty;
unsigned char ch, flag;
int max_count = 256;
int saw_console_brk = 0;
else if (*status & UART_LSR_FE)
flag = TTY_FRAME;
}
- if (uart_handle_sysrq_char(&up->port, ch, regs))
+ if (uart_handle_sysrq_char(&up->port, ch))
goto ignore_char;
if ((*status & up->port.ignore_status_mask) == 0)
tty_insert_flip_char(tty, ch, flag);
wake_up_interruptible(&up->port.info->delta_msr_wait);
}
-static irqreturn_t sunsu_serial_interrupt(int irq, void *dev_id, struct pt_regs *regs)
+static irqreturn_t sunsu_serial_interrupt(int irq, void *dev_id)
{
struct uart_sunsu_port *up = dev_id;
unsigned long flags;
status = serial_inp(up, UART_LSR);
tty = NULL;
if (status & UART_LSR_DR)
- tty = receive_chars(up, &status, regs);
+ tty = receive_chars(up, &status);
check_modem_status(up);
if (status & UART_LSR_THRE)
transmit_chars(up);
sunsu_change_speed(&up->port, up->cflag, 0, quot);
}
-static void receive_kbd_ms_chars(struct uart_sunsu_port *up, struct pt_regs *regs, int is_break)
+static void receive_kbd_ms_chars(struct uart_sunsu_port *up, int is_break)
{
do {
unsigned char ch = serial_inp(up, UART_RX);
/* Stop-A is handled by drivers/char/keyboard.c now. */
if (up->su_type == SU_PORT_KBD) {
#ifdef CONFIG_SERIO
- serio_interrupt(&up->serio, ch, 0, regs);
+ serio_interrupt(&up->serio, ch, 0);
#endif
} else if (up->su_type == SU_PORT_MS) {
int ret = suncore_mouse_baud_detection(ch, is_break);
case 0:
#ifdef CONFIG_SERIO
- serio_interrupt(&up->serio, ch, 0, regs);
+ serio_interrupt(&up->serio, ch, 0);
#endif
break;
};
} while (serial_in(up, UART_LSR) & UART_LSR_DR);
}
-static irqreturn_t sunsu_kbd_ms_interrupt(int irq, void *dev_id, struct pt_regs *regs)
+static irqreturn_t sunsu_kbd_ms_interrupt(int irq, void *dev_id)
{
struct uart_sunsu_port *up = dev_id;
unsigned char status = serial_inp(up, UART_LSR);
if ((status & UART_LSR_DR) || (status & UART_LSR_BI))
- receive_kbd_ms_chars(up, regs,
- (status & UART_LSR_BI) != 0);
+ receive_kbd_ms_chars(up, (status & UART_LSR_BI) != 0);
}
return IRQ_HANDLED;
if (up->su_type != SU_PORT_PORT) {
retval = request_irq(up->port.irq, sunsu_kbd_ms_interrupt,
- SA_SHIRQ, su_typev[up->su_type], up);
+ IRQF_SHARED, su_typev[up->su_type], up);
} else {
retval = request_irq(up->port.irq, sunsu_serial_interrupt,
- SA_SHIRQ, su_typev[up->su_type], up);
+ IRQF_SHARED, su_typev[up->su_type], up);
}
if (retval) {
printk("su: Cannot register IRQ %d\n", up->port.irq);
}
static void
-sunsu_set_termios(struct uart_port *port, struct termios *termios,
- struct termios *old)
+sunsu_set_termios(struct uart_port *port, struct ktermios *termios,
+ struct ktermios *old)
{
unsigned int baud, quot;
static struct uart_driver sunsu_reg = {
.owner = THIS_MODULE,
- .driver_name = "serial",
+ .driver_name = "sunsu",
.dev_name = "ttyS",
.major = TTY_MAJOR,
};
-static int __init sunsu_kbd_ms_init(struct uart_sunsu_port *up)
+static int __devinit sunsu_kbd_ms_init(struct uart_sunsu_port *up)
{
int quot, baud;
#ifdef CONFIG_SERIO
if (up->port.type == PORT_UNKNOWN)
return -ENODEV;
+ printk("%s: %s port at %llx, irq %u\n",
+ to_of_device(up->port.dev)->node->full_name,
+ (up->su_type == SU_PORT_KBD) ? "Keyboard" : "Mouse",
+ (unsigned long long) up->port.mapbase,
+ up->port.irq);
+
#ifdef CONFIG_SERIO
serio = &up->serio;
serio->port_data = up;
unsigned int count)
{
struct uart_sunsu_port *up = &sunsu_ports[co->index];
+ unsigned long flags;
unsigned int ier;
+ int locked = 1;
+
+ local_irq_save(flags);
+ if (up->port.sysrq) {
+ locked = 0;
+ } else if (oops_in_progress) {
+ locked = spin_trylock(&up->port.lock);
+ } else
+ spin_lock(&up->port.lock);
/*
* First save the UER then disable the interrupts
*/
wait_for_xmitr(up);
serial_out(up, UART_IER, ier);
+
+ if (locked)
+ spin_unlock(&up->port.lock);
+ local_irq_restore(flags);
}
/*
* - initialize the serial port
* Return non-zero if we didn't find a serial port.
*/
-static int sunsu_console_setup(struct console *co, char *options)
+static int __init sunsu_console_setup(struct console *co, char *options)
{
struct uart_port *port;
int baud = 9600;
return uart_set_options(port, co, baud, parity, bits, flow);
}
-static struct console sunsu_cons = {
+static struct console sunsu_console = {
.name = "ttyS",
.write = sunsu_console_write,
.device = uart_console_device,
* Register console.
*/
-static inline struct console *SUNSU_CONSOLE(int num_uart)
+static inline struct console *SUNSU_CONSOLE(void)
{
- int i;
-
- if (con_is_present())
- return NULL;
-
- for (i = 0; i < num_uart; i++) {
- int this_minor = sunsu_reg.minor + i;
-
- if ((this_minor - 64) == (serial_console - 1))
- break;
- }
- if (i == num_uart)
- return NULL;
-
- sunsu_cons.index = i;
-
- return &sunsu_cons;
+ return &sunsu_console;
}
#else
-#define SUNSU_CONSOLE(num_uart) (NULL)
+#define SUNSU_CONSOLE() (NULL)
#define sunsu_serial_console_init() do { } while (0)
#endif
struct device_node *ap = of_find_node_by_path("/aliases");
if (ap) {
- char *keyb = of_get_property(ap, "keyboard", NULL);
- char *ms = of_get_property(ap, "mouse", NULL);
+ const char *keyb = of_get_property(ap, "keyboard", NULL);
+ const char *ms = of_get_property(ap, "mouse", NULL);
if (keyb) {
if (dp == of_find_node_by_path(keyb))
struct device_node *dp = op->node;
struct uart_sunsu_port *up;
struct resource *rp;
+ enum su_type type;
int err;
- if (inst >= UART_NR)
- return -EINVAL;
+ type = su_get_type(dp);
+ if (type == SU_PORT_PORT) {
+ if (inst >= UART_NR)
+ return -EINVAL;
+ up = &sunsu_ports[inst];
+ } else {
+ up = kzalloc(sizeof(*up), GFP_KERNEL);
+ if (!up)
+ return -ENOMEM;
+ }
- up = &sunsu_ports[inst];
up->port.line = inst;
spin_lock_init(&up->port.lock);
- up->su_type = su_get_type(dp);
+ up->su_type = type;
rp = &op->resource[0];
- up->port.mapbase = op->resource[0].start;
-
+ up->port.mapbase = rp->start;
up->reg_size = (rp->end - rp->start) + 1;
up->port.membase = of_ioremap(rp, 0, up->reg_size, "su");
- if (!up->port.membase)
+ if (!up->port.membase) {
+ if (type != SU_PORT_PORT)
+ kfree(up);
return -ENOMEM;
+ }
up->port.irq = op->irqs[0];
err = 0;
if (up->su_type == SU_PORT_KBD || up->su_type == SU_PORT_MS) {
err = sunsu_kbd_ms_init(up);
- if (err)
+ if (err) {
+ kfree(up);
goto out_unmap;
+ }
+ dev_set_drvdata(&op->dev, up);
+
+ return 0;
}
up->port.flags |= UPF_BOOT_AUTOCONF;
up->port.ops = &sunsu_pops;
+ sunserial_console_match(SUNSU_CONSOLE(), dp,
+ &sunsu_reg, up->port.line);
err = uart_add_one_port(&sunsu_reg, &up->port);
if (err)
goto out_unmap;
return 0;
out_unmap:
- of_iounmap(up->port.membase, up->reg_size);
+ of_iounmap(&op->resource[0], up->port.membase, up->reg_size);
return err;
}
-static int __devexit su_remove(struct of_device *dev)
+static int __devexit su_remove(struct of_device *op)
{
- struct uart_sunsu_port *up = dev_get_drvdata(&dev->dev);;
+ struct uart_sunsu_port *up = dev_get_drvdata(&op->dev);
if (up->su_type == SU_PORT_MS ||
up->su_type == SU_PORT_KBD) {
#ifdef CONFIG_SERIO
serio_unregister_port(&up->serio);
#endif
- } else if (up->port.type != PORT_UNKNOWN)
+ kfree(up);
+ } else if (up->port.type != PORT_UNKNOWN) {
uart_remove_one_port(&sunsu_reg, &up->port);
+ }
+
+ if (up->port.membase)
+ of_iounmap(&op->resource[0], up->port.membase, up->reg_size);
+
+ dev_set_drvdata(&op->dev, NULL);
return 0;
}
-static struct of_device_id su_match[] = {
+static const struct of_device_id su_match[] = {
{
.name = "su",
},
.remove = __devexit_p(su_remove),
};
-static int num_uart;
-
static int __init sunsu_init(void)
{
struct device_node *dp;
int err;
+ int num_uart = 0;
- num_uart = 0;
for_each_node_by_name(dp, "su") {
if (su_get_type(dp) == SU_PORT_PORT)
num_uart++;
}
if (num_uart) {
- sunsu_reg.minor = sunserial_current_minor;
- sunsu_reg.nr = num_uart;
- err = uart_register_driver(&sunsu_reg);
+ err = sunserial_register_minors(&sunsu_reg, num_uart);
if (err)
return err;
- sunsu_reg.tty_driver->name_base = sunsu_reg.minor - 64;
- sunserial_current_minor += num_uart;
- sunsu_reg.cons = SUNSU_CONSOLE(num_uart);
}
err = of_register_driver(&su_driver, &of_bus_type);
if (err && num_uart)
- uart_unregister_driver(&sunsu_reg);
+ sunserial_unregister_minors(&sunsu_reg, num_uart);
return err;
}
static void __exit sunsu_exit(void)
{
- if (num_uart)
- uart_unregister_driver(&sunsu_reg);
+ if (sunsu_reg.nr)
+ sunserial_unregister_minors(&sunsu_reg, sunsu_reg.nr);
}
module_init(sunsu_init);
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff