#include <linux/module.h>
#include <linux/kernel.h>
-#include <linux/sched.h>
#include <linux/errno.h>
#include <linux/tty.h>
#include <linux/tty_flip.h>
#include <asm/prom.h>
#include <asm/of_device.h>
-#if defined(CONFIG_SERIAL_SUNZILOG_CONSOLE) && defined(CONFIG_MAGIC_SYSRQ)
+#if defined(CONFIG_SERIAL_SUNSAB_CONSOLE) && defined(CONFIG_MAGIC_SYSRQ)
#define SUPPORT_SYSRQ
#endif
unsigned char interrupt_mask1;/* ISR1 masking */
unsigned char pvr_dtr_bit; /* Which PVR bit is DTR */
unsigned char pvr_dsr_bit; /* Which PVR bit is DSR */
+ unsigned int gis_shift;
int type; /* SAB82532 version */
/* Setting configuration bits while the transmitter is active
struct tty_struct *tty;
union sab82532_irq_status status;
unsigned long flags;
+ unsigned char gis;
spin_lock_irqsave(&up->port.lock, flags);
status.stat = 0;
- if (readb(&up->regs->r.gis) & SAB82532_GIS_ISA0)
+ gis = readb(&up->regs->r.gis) >> up->gis_shift;
+ if (gis & 1)
status.sreg.isr0 = readb(&up->regs->r.isr0);
- if (readb(&up->regs->r.gis) & SAB82532_GIS_ISA1)
+ if (gis & 2)
status.sreg.isr1 = readb(&up->regs->r.isr1);
tty = NULL;
transmit_chars(up, &status);
}
- spin_unlock(&up->port.lock);
-
- if (tty)
- tty_flip_buffer_push(tty);
-
- up++;
-
- spin_lock(&up->port.lock);
-
- status.stat = 0;
- if (readb(&up->regs->r.gis) & SAB82532_GIS_ISB0)
- status.sreg.isr0 = readb(&up->regs->r.isr0);
- if (readb(&up->regs->r.gis) & SAB82532_GIS_ISB1)
- status.sreg.isr1 = readb(&up->regs->r.isr1);
-
- tty = NULL;
- if (status.stat) {
- if ((status.sreg.isr0 & (SAB82532_ISR0_TCD | SAB82532_ISR0_TIME |
- SAB82532_ISR0_RFO | SAB82532_ISR0_RPF)) ||
- (status.sreg.isr1 & SAB82532_ISR1_BRK))
-
- tty = receive_chars(up, &status);
- if ((status.sreg.isr0 & SAB82532_ISR0_CDSC) ||
- (status.sreg.isr1 & (SAB82532_ISR1_BRK | SAB82532_ISR1_CSC)))
- check_status(up, &status);
- if (status.sreg.isr1 & (SAB82532_ISR1_ALLS | SAB82532_ISR1_XPR))
- transmit_chars(up, &status);
- }
-
spin_unlock_irqrestore(&up->port.lock, flags);
if (tty)
struct uart_sunsab_port *up = (struct uart_sunsab_port *) port;
unsigned long flags;
unsigned char tmp;
+ int err = request_irq(up->port.irq, sunsab_interrupt,
+ IRQF_SHARED, "sab", up);
+ if (err)
+ return err;
spin_lock_irqsave(&up->port.lock, flags);
#endif
spin_unlock_irqrestore(&up->port.lock, flags);
+ free_irq(up->port.irq, up);
}
/*
};
static struct uart_sunsab_port *sunsab_ports;
-static int num_channels;
#ifdef CONFIG_SERIAL_SUNSAB_CONSOLE
static void sunsab_console_putchar(struct uart_port *port, int c)
{
struct uart_sunsab_port *up = (struct uart_sunsab_port *)port;
- unsigned long flags;
-
- spin_lock_irqsave(&up->port.lock, flags);
sunsab_tec_wait(up);
writeb(c, &up->regs->w.tic);
-
- spin_unlock_irqrestore(&up->port.lock, flags);
}
static void sunsab_console_write(struct console *con, const char *s, unsigned n)
{
struct uart_sunsab_port *up = &sunsab_ports[con->index];
+ unsigned long flags;
+ 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);
uart_console_write(&up->port, s, n, sunsab_console_putchar);
sunsab_tec_wait(up);
+
+ if (locked)
+ spin_unlock(&up->port.lock);
+ local_irq_restore(flags);
}
static int sunsab_console_setup(struct console *con, char *options)
static inline struct console *SUNSAB_CONSOLE(void)
{
- int i;
-
- if (con_is_present())
- return NULL;
-
- for (i = 0; i < num_channels; i++) {
- int this_minor = sunsab_reg.minor + i;
-
- if ((this_minor - 64) == (serial_console - 1))
- break;
- }
- if (i == num_channels)
- return NULL;
-
- sunsab_console.index = i;
-
return &sunsab_console;
}
#else
if ((up->port.line & 0x1) == 0) {
up->pvr_dsr_bit = (1 << 0);
up->pvr_dtr_bit = (1 << 1);
+ up->gis_shift = 2;
} else {
up->pvr_dsr_bit = (1 << 3);
up->pvr_dtr_bit = (1 << 2);
+ up->gis_shift = 0;
}
up->cached_pvr = (1 << 1) | (1 << 2) | (1 << 4);
writeb(up->cached_pvr, &up->regs->w.pvr);
up->tec_timeout = SAB82532_MAX_TEC_TIMEOUT;
up->cec_timeout = SAB82532_MAX_CEC_TIMEOUT;
- if (!(up->port.line & 0x01)) {
- int err;
-
- err = request_irq(up->port.irq, sunsab_interrupt,
- IRQF_SHARED, "sab", up);
- if (err) {
- of_iounmap(&op->resource[0],
- up->port.membase,
- sizeof(union sab82532_async_regs));
- return err;
- }
- }
-
return 0;
}
0,
(inst * 2) + 0);
if (err)
- return err;
+ goto out;
err = sunsab_init_one(&up[1], op,
sizeof(union sab82532_async_regs),
(inst * 2) + 1);
- if (err) {
- of_iounmap(&op->resource[0],
- up[0].port.membase,
- sizeof(union sab82532_async_regs));
- free_irq(up[0].port.irq, &up[0]);
- return err;
- }
+ if (err)
+ goto out1;
- uart_add_one_port(&sunsab_reg, &up[0].port);
- uart_add_one_port(&sunsab_reg, &up[1].port);
+ sunserial_console_match(SUNSAB_CONSOLE(), op->node,
+ &sunsab_reg, up[0].port.line);
+
+ sunserial_console_match(SUNSAB_CONSOLE(), op->node,
+ &sunsab_reg, up[1].port.line);
+
+ err = uart_add_one_port(&sunsab_reg, &up[0].port);
+ if (err)
+ goto out2;
+
+ err = uart_add_one_port(&sunsab_reg, &up[1].port);
+ if (err)
+ goto out3;
dev_set_drvdata(&op->dev, &up[0]);
inst++;
return 0;
-}
-static void __devexit sab_remove_one(struct uart_sunsab_port *up)
-{
- struct of_device *op = to_of_device(up->port.dev);
-
- uart_remove_one_port(&sunsab_reg, &up->port);
- if (!(up->port.line & 1))
- free_irq(up->port.irq, up);
+out3:
+ uart_remove_one_port(&sunsab_reg, &up[0].port);
+out2:
+ of_iounmap(&op->resource[0],
+ up[1].port.membase,
+ sizeof(union sab82532_async_regs));
+out1:
of_iounmap(&op->resource[0],
- up->port.membase,
+ up[0].port.membase,
sizeof(union sab82532_async_regs));
+out:
+ return err;
}
static int __devexit sab_remove(struct of_device *op)
{
struct uart_sunsab_port *up = dev_get_drvdata(&op->dev);
- sab_remove_one(&up[0]);
- sab_remove_one(&up[1]);
+ uart_remove_one_port(&sunsab_reg, &up[1].port);
+ uart_remove_one_port(&sunsab_reg, &up[0].port);
+ of_iounmap(&op->resource[0],
+ up[1].port.membase,
+ sizeof(union sab82532_async_regs));
+ of_iounmap(&op->resource[0],
+ up[0].port.membase,
+ sizeof(union sab82532_async_regs));
dev_set_drvdata(&op->dev, NULL);
{
struct device_node *dp;
int err;
+ int num_channels = 0;
- num_channels = 0;
for_each_node_by_name(dp, "se")
num_channels += 2;
for_each_node_by_name(dp, "serial") {
if (!sunsab_ports)
return -ENOMEM;
- sunsab_reg.minor = sunserial_current_minor;
- sunsab_reg.nr = num_channels;
-
- err = uart_register_driver(&sunsab_reg);
+ sunsab_reg.cons = SUNSAB_CONSOLE();
+ err = sunserial_register_minors(&sunsab_reg, num_channels);
if (err) {
kfree(sunsab_ports);
sunsab_ports = NULL;
return err;
}
-
- sunsab_reg.tty_driver->name_base = sunsab_reg.minor - 64;
- sunsab_reg.cons = SUNSAB_CONSOLE();
- sunserial_current_minor += num_channels;
}
return of_register_driver(&sab_driver, &of_bus_type);
static void __exit sunsab_exit(void)
{
of_unregister_driver(&sab_driver);
- if (num_channels) {
- sunserial_current_minor -= num_channels;
- uart_unregister_driver(&sunsab_reg);
+ if (sunsab_reg.nr) {
+ sunserial_unregister_minors(&sunsab_reg, sunsab_reg.nr);
}
kfree(sunsab_ports);