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author | wanzongshun <mcuos.com@gmail.com> | 2009-02-04 05:01:38 +0100 |
---|---|---|
committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2009-02-10 11:24:21 +0000 |
commit | 17198f2d681d34b3376f3a55b2837e56062c2439 (patch) | |
tree | 9d9f87f3bf08c530ef18251e04a50ec16d6633ea /arch | |
parent | b74788d8c118a48585ad5342560e0aea6ed0ccd4 (diff) | |
download | kernel_samsung_smdk4412-17198f2d681d34b3376f3a55b2837e56062c2439.zip kernel_samsung_smdk4412-17198f2d681d34b3376f3a55b2837e56062c2439.tar.gz kernel_samsung_smdk4412-17198f2d681d34b3376f3a55b2837e56062c2439.tar.bz2 |
[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>
Diffstat (limited to 'arch')
-rw-r--r-- | arch/arm/mach-w90x900/cpu.h | 17 | ||||
-rw-r--r-- | arch/arm/mach-w90x900/mach-w90p910evb.c | 10 | ||||
-rw-r--r-- | arch/arm/mach-w90x900/w90p910.c | 67 |
3 files changed, 24 insertions, 70 deletions
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_io(struct map_desc *mach_desc, int size); 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 @@ struct platform_device w90x900_##devname = { \ .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 @@ static struct map_desc w90p910_iodesc[] __initdata = { /*IODESC_ENT(LCD),*/ }; -/*Init the dev resource*/ - -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 -}; +/* Initial serial platform data */ -/*Init W90P910 uart device*/ +struct plat_serial8250_port w90p910_uart_data[] = { + W90X900_8250PORT(UART0), +}; -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 w90p910_init_cpu(void) 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); |