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| author | Lennert Buytenhek <buytenh@wantstofly.org> | 2006-04-02 19:17:40 +0400 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2006-04-02 19:17:40 +0400 |
| commit | 7ba01f9728a9f1cd1a3e1e2d5206f76061182675 (patch) | |
| tree | 4f34eb87b275bbbaafe61e4e1bed12f1f70ccb11 | |
| parent | 41658132e650c01529dd5cc5cea8b0055def1165 (diff) | |
| download | linux-7ba01f9728a9f1cd1a3e1e2d5206f76061182675.tar.xz | |
[ARM] 3451/1: ep93xx: use the m48t86 rtc driver on the ts72xx platform
Patch from Lennert Buytenhek
Instantiate the recently merged m48t86 rtc driver in the ts72xx code.
Signed-off-by: Lennert Buytenhek <buytenh@wantstofly.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| -rw-r--r-- | arch/arm/mach-ep93xx/ts72xx.c | 39 | ||||
| -rw-r--r-- | include/asm-arm/arch-ep93xx/ts72xx.h | 11 |
2 files changed, 50 insertions, 0 deletions
diff --git a/arch/arm/mach-ep93xx/ts72xx.c b/arch/arm/mach-ep93xx/ts72xx.c index 777e75daa8a5..9be01b0c3f48 100644 --- a/arch/arm/mach-ep93xx/ts72xx.c +++ b/arch/arm/mach-ep93xx/ts72xx.c @@ -17,6 +17,8 @@ #include <linux/sched.h> #include <linux/interrupt.h> #include <linux/mtd/physmap.h> +#include <linux/platform_device.h> +#include <linux/m48t86.h> #include <asm/io.h> #include <asm/hardware.h> #include <asm/mach-types.h> @@ -39,6 +41,16 @@ static struct map_desc ts72xx_io_desc[] __initdata = { .pfn = __phys_to_pfn(TS72XX_OPTIONS2_PHYS_BASE), .length = TS72XX_OPTIONS2_SIZE, .type = MT_DEVICE, + }, { + .virtual = TS72XX_RTC_INDEX_VIRT_BASE, + .pfn = __phys_to_pfn(TS72XX_RTC_INDEX_PHYS_BASE), + .length = TS72XX_RTC_INDEX_SIZE, + .type = MT_DEVICE, + }, { + .virtual = TS72XX_RTC_DATA_VIRT_BASE, + .pfn = __phys_to_pfn(TS72XX_RTC_DATA_PHYS_BASE), + .length = TS72XX_RTC_DATA_SIZE, + .type = MT_DEVICE, } }; @@ -99,11 +111,38 @@ static void __init ts72xx_map_io(void) } } +static unsigned char ts72xx_rtc_readb(unsigned long addr) +{ + __raw_writeb(addr, TS72XX_RTC_INDEX_VIRT_BASE); + return __raw_readb(TS72XX_RTC_DATA_VIRT_BASE); +} + +static void ts72xx_rtc_writeb(unsigned char value, unsigned long addr) +{ + __raw_writeb(addr, TS72XX_RTC_INDEX_VIRT_BASE); + __raw_writeb(value, TS72XX_RTC_DATA_VIRT_BASE); +} + +static struct m48t86_ops ts72xx_rtc_ops = { + .readb = ts72xx_rtc_readb, + .writeb = ts72xx_rtc_writeb, +}; + +static struct platform_device ts72xx_rtc_device = { + .name = "rtc-m48t86", + .id = -1, + .dev = { + .platform_data = &ts72xx_rtc_ops, + }, + .num_resources = 0, +}; + static void __init ts72xx_init_machine(void) { ep93xx_init_devices(); if (board_is_ts7200()) physmap_configure(TS72XX_NOR_PHYS_BASE, 0x01000000, 1, NULL); + platform_device_register(&ts72xx_rtc_device); } MACHINE_START(TS72XX, "Technologic Systems TS-72xx SBC") diff --git a/include/asm-arm/arch-ep93xx/ts72xx.h b/include/asm-arm/arch-ep93xx/ts72xx.h index 412215e77f44..a94f63ff0535 100644 --- a/include/asm-arm/arch-ep93xx/ts72xx.h +++ b/include/asm-arm/arch-ep93xx/ts72xx.h @@ -12,6 +12,8 @@ * febfc000 [67]0000000 4K NAND data register * febfb000 [67]0400000 4K NAND control register * febfa000 [67]0800000 4K NAND busy register + * febf9000 10800000 4K TS-5620 RTC index register + * febf8000 11700000 4K TS-5620 RTC data register */ #define TS72XX_MODEL_PHYS_BASE 0x22000000 @@ -58,6 +60,15 @@ #define TS72XX_NAND_BUSY_SIZE 0x00001000 +#define TS72XX_RTC_INDEX_VIRT_BASE 0xfebf9000 +#define TS72XX_RTC_INDEX_PHYS_BASE 0x10800000 +#define TS72XX_RTC_INDEX_SIZE 0x00001000 + +#define TS72XX_RTC_DATA_VIRT_BASE 0xfebf8000 +#define TS72XX_RTC_DATA_PHYS_BASE 0x11700000 +#define TS72XX_RTC_DATA_SIZE 0x00001000 + + #ifndef __ASSEMBLY__ #include <asm/io.h> |