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path: root/drivers/serial/vr41xx_siu.c
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Diffstat (limited to 'drivers/serial/vr41xx_siu.c')
-rw-r--r--drivers/serial/vr41xx_siu.c143
1 files changed, 30 insertions, 113 deletions
diff --git a/drivers/serial/vr41xx_siu.c b/drivers/serial/vr41xx_siu.c
index cf0e663b42e..85309acb75f 100644
--- a/drivers/serial/vr41xx_siu.c
+++ b/drivers/serial/vr41xx_siu.c
@@ -1,7 +1,7 @@
/*
* Driver for NEC VR4100 series Serial Interface Unit.
*
- * Copyright (C) 2004-2005 Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp>
+ * Copyright (C) 2004-2007 Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp>
*
* Based on drivers/serial/8250.c, by Russell King.
*
@@ -25,12 +25,12 @@
#endif
#include <linux/console.h>
-#include <linux/platform_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>
@@ -38,11 +38,9 @@
#include <linux/tty_flip.h>
#include <asm/io.h>
-#include <asm/vr41xx/irq.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
@@ -60,32 +58,13 @@
#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, },
-};
-
-#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, },
+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_TYPE2_NR_PORTS (sizeof(siu_type2_ports) / sizeof(struct siu_port))
-
-static struct uart_port siu_uart_ports[SIU_PORTS_MAX];
static uint8_t lsr_break_flag[SIU_PORTS_MAX];
#define siu_read(port, offset) readb((port)->membase + (offset))
@@ -110,7 +89,6 @@ void vr41xx_select_siu_interface(siu_interface_t interface)
spin_unlock_irqrestore(&port->lock, flags);
}
-
EXPORT_SYMBOL_GPL(vr41xx_select_siu_interface);
void vr41xx_use_irda(irda_use_t use)
@@ -132,7 +110,6 @@ 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)
@@ -166,7 +143,6 @@ 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)
@@ -177,21 +153,6 @@ 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) {
@@ -206,21 +167,10 @@ static inline unsigned long siu_port_size(struct uart_port *port)
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;
}
@@ -751,44 +701,34 @@ static struct uart_ops siu_uart_ops = {
.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
@@ -883,13 +823,9 @@ static struct console siu_console = {
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;
}
@@ -920,7 +856,7 @@ 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;
@@ -998,8 +934,6 @@ static int siu_resume(struct platform_device *dev)
return 0;
}
-static struct platform_device *siu_platform_device;
-
static struct platform_driver siu_device_driver = {
.probe = siu_probe,
.remove = __devexit_p(siu_remove),
@@ -1013,29 +947,12 @@ static struct platform_driver siu_device_driver = {
static int __init vr41xx_siu_init(void)
{
- int retval;
-
- siu_platform_device = platform_device_alloc("SIU", -1);
- if (!siu_platform_device)
- return -ENOMEM;
-
- retval = platform_device_add(siu_platform_device);
- if (retval < 0) {
- platform_device_put(siu_platform_device);
- return retval;
- }
-
- retval = platform_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 __exit vr41xx_siu_exit(void)
{
platform_driver_unregister(&siu_device_driver);
- platform_device_unregister(siu_platform_device);
}
module_init(vr41xx_siu_init);
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-21 11:40:00 +0000