/*
* Driver for NEC VR4100 series Serial Interface Unit.
*
- * Copyright (C) 2004-2005 Yoichi Yuasa <yuasa@hh.iij4u.or.jp>
+ * Copyright (C) 2004-2008 Yoichi Yuasa <yuasa@linux-mips.org>
*
* Based on drivers/serial/8250.c, by Russell King.
*
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
-#include <linux/config.h>
#if defined(CONFIG_SERIAL_VR41XX_CONSOLE) && defined(CONFIG_MAGIC_SYSRQ)
#define SUPPORT_SYSRQ
#endif
#include <linux/console.h>
-#include <linux/device.h>
-#include <linux/err.h>
-#include <linux/ioport.h>
+#include <linux/errno.h>
#include <linux/init.h>
#include <linux/interrupt.h>
+#include <linux/ioport.h>
#include <linux/module.h>
+#include <linux/platform_device.h>
#include <linux/serial.h>
#include <linux/serial_core.h>
#include <linux/serial_reg.h>
#include <asm/vr41xx/siu.h>
#include <asm/vr41xx/vr41xx.h>
-#define SIU_PORTS_MAX 2
#define SIU_BAUD_BASE 1152000
#define SIU_MAJOR 204
#define SIU_MINOR_BASE 82
#define IRUSESEL 0x02
#define SIRSEL 0x01
-struct siu_port {
- unsigned int type;
- unsigned int irq;
- unsigned long start;
-};
-
-static const struct siu_port siu_type1_ports[] = {
- { .type = PORT_VR41XX_SIU,
- .irq = SIU_IRQ,
- .start = 0x0c000000UL, },
+static struct uart_port siu_uart_ports[SIU_PORTS_MAX] = {
+ [0 ... SIU_PORTS_MAX-1] = {
+ .lock = __SPIN_LOCK_UNLOCKED(siu_uart_ports->lock),
+ .irq = -1,
+ },
};
-#define SIU_TYPE1_NR_PORTS (sizeof(siu_type1_ports) / sizeof(struct siu_port))
-
-static const struct siu_port siu_type2_ports[] = {
- { .type = PORT_VR41XX_SIU,
- .irq = SIU_IRQ,
- .start = 0x0f000800UL, },
- { .type = PORT_VR41XX_DSIU,
- .irq = DSIU_IRQ,
- .start = 0x0f000820UL, },
-};
-
-#define SIU_TYPE2_NR_PORTS (sizeof(siu_type2_ports) / sizeof(struct siu_port))
-
-static struct uart_port siu_uart_ports[SIU_PORTS_MAX];
+#ifdef CONFIG_SERIAL_VR41XX_CONSOLE
static uint8_t lsr_break_flag[SIU_PORTS_MAX];
+#endif
#define siu_read(port, offset) readb((port)->membase + (offset))
#define siu_write(port, offset, value) writeb((value), (port)->membase + (offset))
spin_unlock_irqrestore(&port->lock, flags);
}
-
EXPORT_SYMBOL_GPL(vr41xx_select_siu_interface);
void vr41xx_use_irda(irda_use_t use)
spin_unlock_irqrestore(&port->lock, flags);
}
-
EXPORT_SYMBOL_GPL(vr41xx_use_irda);
void vr41xx_select_irda_module(irda_module_t module, irda_speed_t speed)
spin_unlock_irqrestore(&port->lock, flags);
}
-
EXPORT_SYMBOL_GPL(vr41xx_select_irda_module);
static inline void siu_clear_fifo(struct uart_port *port)
siu_write(port, UART_FCR, 0);
}
-static inline int siu_probe_ports(void)
-{
- switch (current_cpu_data.cputype) {
- case CPU_VR4111:
- case CPU_VR4121:
- return SIU_TYPE1_NR_PORTS;
- case CPU_VR4122:
- case CPU_VR4131:
- case CPU_VR4133:
- return SIU_TYPE2_NR_PORTS;
- }
-
- return 0;
-}
-
static inline unsigned long siu_port_size(struct uart_port *port)
{
switch (port->type) {
static inline unsigned int siu_check_type(struct uart_port *port)
{
- switch (current_cpu_data.cputype) {
- case CPU_VR4111:
- case CPU_VR4121:
- if (port->line == 0)
- return PORT_VR41XX_SIU;
- break;
- case CPU_VR4122:
- case CPU_VR4131:
- case CPU_VR4133:
- if (port->line == 0)
- return PORT_VR41XX_SIU;
- else if (port->line == 1)
- return PORT_VR41XX_DSIU;
- break;
- }
+ if (port->line == 0)
+ return PORT_VR41XX_SIU;
+ if (port->line == 1 && port->irq != -1)
+ return PORT_VR41XX_DSIU;
return PORT_UNKNOWN;
}
return mctrl;
}
-static void siu_stop_tx(struct uart_port *port, unsigned int tty_stop)
+static void siu_stop_tx(struct uart_port *port)
{
unsigned long flags;
uint8_t ier;
spin_unlock_irqrestore(&port->lock, flags);
}
-static void siu_start_tx(struct uart_port *port, unsigned int tty_start)
+static void siu_start_tx(struct uart_port *port)
{
unsigned long flags;
uint8_t ier;
spin_unlock_irqrestore(&port->lock, flags);
}
-static inline void receive_chars(struct uart_port *port, uint8_t *status,
- struct pt_regs *regs)
+static inline void receive_chars(struct uart_port *port, uint8_t *status)
{
struct tty_struct *tty;
uint8_t lsr, ch;
char flag;
int max_count = RX_MAX_COUNT;
- tty = port->info->tty;
+ tty = port->state->port.tty;
lsr = *status;
do {
- if (unlikely(tty->flip.count >= TTY_FLIPBUF_SIZE)) {
- if (tty->low_latency)
- tty_flip_buffer_push(tty);
- }
-
ch = siu_read(port, UART_RX);
port->icount.rx++;
flag = TTY_NORMAL;
flag = TTY_PARITY;
}
- if (uart_handle_sysrq_char(port, ch, regs))
+ if (uart_handle_sysrq_char(port, ch))
goto ignore_char;
uart_insert_char(port, lsr, UART_LSR_OE, ch, flag);
if (msr & UART_MSR_DCTS)
uart_handle_cts_change(port, msr & UART_MSR_CTS);
- wake_up_interruptible(&port->info->delta_msr_wait);
+ wake_up_interruptible(&port->state->port.delta_msr_wait);
}
static inline void transmit_chars(struct uart_port *port)
struct circ_buf *xmit;
int max_count = TX_MAX_COUNT;
- xmit = &port->info->xmit;
+ xmit = &port->state->xmit;
if (port->x_char) {
siu_write(port, UART_TX, port->x_char);
}
if (uart_circ_empty(xmit) || uart_tx_stopped(port)) {
- siu_stop_tx(port, 0);
+ siu_stop_tx(port);
return;
}
uart_write_wakeup(port);
if (uart_circ_empty(xmit))
- siu_stop_tx(port, 0);
+ siu_stop_tx(port);
}
-static irqreturn_t siu_interrupt(int irq, void *dev_id, struct pt_regs *regs)
+static irqreturn_t siu_interrupt(int irq, void *dev_id)
{
struct uart_port *port;
uint8_t iir, lsr;
lsr = siu_read(port, UART_LSR);
if (lsr & UART_LSR_DR)
- receive_chars(port, &lsr, regs);
+ receive_chars(port, &lsr);
check_modem_status(port);
free_irq(port->irq, port);
}
-static void siu_set_termios(struct uart_port *port, struct termios *new,
- struct termios *old)
+static void siu_set_termios(struct uart_port *port, struct ktermios *new,
+ struct ktermios *old)
{
tcflag_t c_cflag, c_iflag;
uint8_t lcr, fcr, ier;
.verify_port = siu_verify_port,
};
-static int siu_init_ports(void)
+static int siu_init_ports(struct platform_device *pdev)
{
- const struct siu_port *siu;
struct uart_port *port;
- int i, num;
+ struct resource *res;
+ int *type = pdev->dev.platform_data;
+ int i;
- switch (current_cpu_data.cputype) {
- case CPU_VR4111:
- case CPU_VR4121:
- siu = siu_type1_ports;
- break;
- case CPU_VR4122:
- case CPU_VR4131:
- case CPU_VR4133:
- siu = siu_type2_ports;
- break;
- default:
+ if (!type)
return 0;
- }
port = siu_uart_ports;
- num = siu_probe_ports();
- for (i = 0; i < num; i++) {
- spin_lock_init(&port->lock);
- port->irq = siu->irq;
+ for (i = 0; i < SIU_PORTS_MAX; i++) {
+ port->type = type[i];
+ if (port->type == PORT_UNKNOWN)
+ continue;
+ port->irq = platform_get_irq(pdev, i);
port->uartclk = SIU_BAUD_BASE * 16;
port->fifosize = 16;
port->regshift = 0;
port->iotype = UPIO_MEM;
port->flags = UPF_IOREMAP | UPF_BOOT_AUTOCONF;
- port->type = siu->type;
port->line = i;
- port->mapbase = siu->start;
- siu++;
+ res = platform_get_resource(pdev, IORESOURCE_MEM, i);
+ port->mapbase = res->start;
port++;
}
- return num;
+ return i;
}
#ifdef CONFIG_SERIAL_VR41XX_CONSOLE
}
}
+static void siu_console_putchar(struct uart_port *port, int ch)
+{
+ wait_for_xmitr(port);
+ siu_write(port, UART_TX, ch);
+}
+
static void siu_console_write(struct console *con, const char *s, unsigned count)
{
struct uart_port *port;
uint8_t ier;
- unsigned i;
port = &siu_uart_ports[con->index];
ier = siu_read(port, UART_IER);
siu_write(port, UART_IER, 0);
- for (i = 0; i < count && *s != '\0'; i++, s++) {
- wait_for_xmitr(port);
- siu_write(port, UART_TX, *s);
- if (*s == '\n') {
- wait_for_xmitr(port);
- siu_write(port, UART_TX, '\r');
- }
- }
+ uart_console_write(port, s, count, siu_console_putchar);
wait_for_xmitr(port);
siu_write(port, UART_IER, ier);
}
-static int siu_console_setup(struct console *con, char *options)
+static int __init siu_console_setup(struct console *con, char *options)
{
struct uart_port *port;
int baud = 9600;
port->membase = ioremap(port->mapbase, siu_port_size(port));
}
- vr41xx_select_siu_interface(SIU_INTERFACE_RS232C);
+ if (port->type == PORT_VR41XX_SIU)
+ vr41xx_select_siu_interface(SIU_INTERFACE_RS232C);
if (options != NULL)
uart_parse_options(options, &baud, &parity, &bits, &flow);
static int __devinit siu_console_init(void)
{
struct uart_port *port;
- int num, i;
-
- num = siu_init_ports();
- if (num <= 0)
- return -ENODEV;
+ int i;
- for (i = 0; i < num; i++) {
+ for (i = 0; i < SIU_PORTS_MAX; i++) {
port = &siu_uart_ports[i];
port->ops = &siu_uart_ops;
}
console_initcall(siu_console_init);
+void __init vr41xx_siu_early_setup(struct uart_port *port)
+{
+ if (port->type == PORT_UNKNOWN)
+ return;
+
+ siu_uart_ports[port->line].line = port->line;
+ siu_uart_ports[port->line].type = port->type;
+ siu_uart_ports[port->line].uartclk = SIU_BAUD_BASE * 16;
+ siu_uart_ports[port->line].mapbase = port->mapbase;
+ siu_uart_ports[port->line].mapbase = port->mapbase;
+ siu_uart_ports[port->line].ops = &siu_uart_ops;
+}
+
#define SERIAL_VR41XX_CONSOLE &siu_console
#else
#define SERIAL_VR41XX_CONSOLE NULL
.owner = THIS_MODULE,
.driver_name = "SIU",
.dev_name = "ttyVR",
- .devfs_name = "ttvr/",
.major = SIU_MAJOR,
.minor = SIU_MINOR_BASE,
.cons = SERIAL_VR41XX_CONSOLE,
};
-static int siu_probe(struct device *dev)
+static int __devinit siu_probe(struct platform_device *dev)
{
struct uart_port *port;
int num, i, retval;
- num = siu_init_ports();
+ num = siu_init_ports(dev);
if (num <= 0)
return -ENODEV;
for (i = 0; i < num; i++) {
port = &siu_uart_ports[i];
port->ops = &siu_uart_ops;
- port->dev = dev;
+ port->dev = &dev->dev;
retval = uart_add_one_port(&siu_uart_driver, port);
if (retval < 0) {
return 0;
}
-static int siu_remove(struct device *dev)
+static int __devexit siu_remove(struct platform_device *dev)
{
struct uart_port *port;
int i;
for (i = 0; i < siu_uart_driver.nr; i++) {
port = &siu_uart_ports[i];
- if (port->dev == dev) {
+ if (port->dev == &dev->dev) {
uart_remove_one_port(&siu_uart_driver, port);
port->dev = NULL;
}
return 0;
}
-static int siu_suspend(struct device *dev, pm_message_t state, u32 level)
+static int siu_suspend(struct platform_device *dev, pm_message_t state)
{
struct uart_port *port;
int i;
- if (level != SUSPEND_DISABLE)
- return 0;
-
for (i = 0; i < siu_uart_driver.nr; i++) {
port = &siu_uart_ports[i];
if ((port->type == PORT_VR41XX_SIU ||
- port->type == PORT_VR41XX_DSIU) && port->dev == dev)
+ port->type == PORT_VR41XX_DSIU) && port->dev == &dev->dev)
uart_suspend_port(&siu_uart_driver, port);
}
return 0;
}
-static int siu_resume(struct device *dev, u32 level)
+static int siu_resume(struct platform_device *dev)
{
struct uart_port *port;
int i;
- if (level != RESUME_ENABLE)
- return 0;
-
for (i = 0; i < siu_uart_driver.nr; i++) {
port = &siu_uart_ports[i];
if ((port->type == PORT_VR41XX_SIU ||
- port->type == PORT_VR41XX_DSIU) && port->dev == dev)
+ port->type == PORT_VR41XX_DSIU) && port->dev == &dev->dev)
uart_resume_port(&siu_uart_driver, port);
}
return 0;
}
-static struct platform_device *siu_platform_device;
-
-static struct device_driver siu_device_driver = {
- .name = "SIU",
- .bus = &platform_bus_type,
+static struct platform_driver siu_device_driver = {
.probe = siu_probe,
- .remove = siu_remove,
+ .remove = __devexit_p(siu_remove),
.suspend = siu_suspend,
.resume = siu_resume,
+ .driver = {
+ .name = "SIU",
+ .owner = THIS_MODULE,
+ },
};
-static int __devinit vr41xx_siu_init(void)
+static int __init vr41xx_siu_init(void)
{
- int retval;
-
- siu_platform_device = platform_device_register_simple("SIU", -1, NULL, 0);
- if (IS_ERR(siu_platform_device))
- return PTR_ERR(siu_platform_device);
-
- retval = driver_register(&siu_device_driver);
- if (retval < 0)
- platform_device_unregister(siu_platform_device);
-
- return retval;
+ return platform_driver_register(&siu_device_driver);
}
-static void __devexit vr41xx_siu_exit(void)
+static void __exit vr41xx_siu_exit(void)
{
- driver_unregister(&siu_device_driver);
-
- platform_device_unregister(siu_platform_device);
+ platform_driver_unregister(&siu_device_driver);
}
module_init(vr41xx_siu_init);
module_exit(vr41xx_siu_exit);
+
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:SIU");
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff