[ARM] 5374/1: The w90p910 uart0 driver patch
Add W90P910 UART0 support,the W90P910 UART0 is 8250 series.
Signed-off-by: Wan ZongShun <mcuos.com@gmail.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
diff --git a/arch/arm/mach-w90x900/cpu.h b/arch/arm/mach-w90x900/cpu.h
index 40ff408..001d509 100644
--- a/arch/arm/mach-w90x900/cpu.h
+++ b/arch/arm/mach-w90x900/cpu.h
@@ -43,6 +43,7 @@
extern void w90p910_init_uarts(struct w90x900_uartcfg *cfg, int no);
extern void w90p910_init_clocks(int xtal);
extern void w90p910_map_io(struct map_desc *mach_desc, int size);
+extern struct platform_device w90p910_serial_device;
extern struct sys_timer w90x900_timer;
#define W90X900_RES(name) \
@@ -67,11 +68,13 @@
.resource = w90x900_##regname##_resource, \
}
-#define W90X900_UARTCFG(port, flag, uc, ulc, ufc) \
-{ \
- .hwport = port, \
- .flags = flag, \
- .ucon = uc, \
- .ulcon = ulc, \
- .ufcon = ufc, \
+#define W90X900_8250PORT(name) \
+{ \
+ .membase = name##_BA, \
+ .mapbase = name##_PA, \
+ .irq = IRQ_##name, \
+ .uartclk = 11313600, \
+ .regshift = 2, \
+ .iotype = UPIO_MEM, \
+ .flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST, \
}
diff --git a/arch/arm/mach-w90x900/mach-w90p910evb.c b/arch/arm/mach-w90x900/mach-w90p910evb.c
index 9ebc93f..5425270 100644
--- a/arch/arm/mach-w90x900/mach-w90p910evb.c
+++ b/arch/arm/mach-w90x900/mach-w90p910evb.c
@@ -36,24 +36,16 @@
static struct map_desc w90p910_iodesc[] __initdata = {
};
-static struct w90x900_uartcfg w90p910_uartcfgs[] = {
- W90X900_UARTCFG(0, 0, 0, 0, 0),
- W90X900_UARTCFG(1, 0, 0, 0, 0),
- W90X900_UARTCFG(2, 0, 0, 0, 0),
- W90X900_UARTCFG(3, 0, 0, 0, 0),
- W90X900_UARTCFG(4, 0, 0, 0, 0),
-};
-
/*Here should be your evb resourse,such as LCD*/
static struct platform_device *w90p910evb_dev[] __initdata = {
+ &w90p910_serial_device,
};
static void __init w90p910evb_map_io(void)
{
w90p910_map_io(w90p910_iodesc, ARRAY_SIZE(w90p910_iodesc));
w90p910_init_clocks(0);
- w90p910_init_uarts(w90p910_uartcfgs, ARRAY_SIZE(w90p910_uartcfgs));
}
static void __init w90p910evb_init(void)
diff --git a/arch/arm/mach-w90x900/w90p910.c b/arch/arm/mach-w90x900/w90p910.c
index aa783bc..2bcbaa6 100644
--- a/arch/arm/mach-w90x900/w90p910.c
+++ b/arch/arm/mach-w90x900/w90p910.c
@@ -25,6 +25,7 @@
#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/io.h>
+#include <linux/serial_8250.h>
#include <asm/mach/arch.h>
#include <asm/mach/map.h>
@@ -36,12 +37,6 @@
#include "cpu.h"
-/*W90P910 has five uarts*/
-
-#define MAX_UART_COUNT 5
-static int uart_count;
-static struct platform_device *uart_devs[MAX_UART_COUNT-1];
-
/* Initial IO mappings */
static struct map_desc w90p910_iodesc[] __initdata = {
@@ -53,48 +48,19 @@
/*IODESC_ENT(LCD),*/
};
-/*Init the dev resource*/
+/* Initial serial platform data */
-static W90X900_RES(UART0);
-static W90X900_RES(UART1);
-static W90X900_RES(UART2);
-static W90X900_RES(UART3);
-static W90X900_RES(UART4);
-static W90X900_DEVICE(uart0, UART0, 0, "w90x900-uart");
-static W90X900_DEVICE(uart1, UART1, 1, "w90x900-uart");
-static W90X900_DEVICE(uart2, UART2, 2, "w90x900-uart");
-static W90X900_DEVICE(uart3, UART3, 3, "w90x900-uart");
-static W90X900_DEVICE(uart4, UART4, 4, "w90x900-uart");
-
-static struct platform_device *uart_devices[] __initdata = {
- &w90x900_uart0,
- &w90x900_uart1,
- &w90x900_uart2,
- &w90x900_uart3,
- &w90x900_uart4
+struct plat_serial8250_port w90p910_uart_data[] = {
+ W90X900_8250PORT(UART0),
};
-/*Init W90P910 uart device*/
-
-void __init w90p910_init_uarts(struct w90x900_uartcfg *cfg, int no)
-{
- struct platform_device *platdev;
- int uart, uartdev;
-
- /*By min() to judge count of uart be used indeed*/
-
- uartdev = ARRAY_SIZE(uart_devices);
- no = min(uartdev, no);
-
- for (uart = 0; uart < no; uart++, cfg++) {
- if (cfg->hwport != uart)
- printk(KERN_ERR "w90x900_uartcfg[%d] error\n", uart);
- platdev = uart_devices[cfg->hwport];
- uart_devs[uart] = platdev;
- platdev->dev.platform_data = cfg;
- }
- uart_count = uart;
-}
+struct platform_device w90p910_serial_device = {
+ .name = "serial8250",
+ .id = PLAT8250_DEV_PLATFORM,
+ .dev = {
+ .platform_data = w90p910_uart_data,
+ },
+};
/*Init W90P910 evb io*/
@@ -122,13 +88,6 @@
static int __init w90x900_arch_init(void)
{
- int ret;
-
- ret = w90p910_init_cpu();
- if (ret != 0)
- return ret;
-
- return platform_add_devices(uart_devs, uart_count);
-
+ return w90p910_init_cpu();
}
arch_initcall(w90x900_arch_init);