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| author | Russell King <rmk+kernel@arm.linux.org.uk> | 2013-11-30 14:41:26 +0100 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2013-12-29 13:36:44 +0100 |
| commit | 43024ed6fa831094b1e0eca7f18de372842ac9a1 (patch) | |
| tree | 62bc317ccd1d065c0e4da8a0cd55e34b22d238af /arch/arm/mach-footbridge | |
| parent | ARM: pgd allocation: retry on failure (diff) | |
| download | linux-43024ed6fa831094b1e0eca7f18de372842ac9a1.tar.xz linux-43024ed6fa831094b1e0eca7f18de372842ac9a1.zip | |
ARM: footbridge: cleanup LEDs code
Cleanup the LEDs code to use ioremap()/writeb() to access the register.
This allows us to move the definitions out of a header file directly
into the ebsa285 support code.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/mach-footbridge')
| -rw-r--r-- | arch/arm/mach-footbridge/common.c | 5 | ||||
| -rw-r--r-- | arch/arm/mach-footbridge/ebsa285.c | 17 | ||||
| -rw-r--r-- | arch/arm/mach-footbridge/include/mach/hardware.h | 6 |
3 files changed, 15 insertions, 13 deletions
diff --git a/arch/arm/mach-footbridge/common.c b/arch/arm/mach-footbridge/common.c index e0091685fd48..9e8220e38398 100644 --- a/arch/arm/mach-footbridge/common.c +++ b/arch/arm/mach-footbridge/common.c @@ -143,11 +143,6 @@ static struct map_desc fb_common_io_desc[] __initdata = { .pfn = __phys_to_pfn(DC21285_ARMCSR_BASE), .length = ARMCSR_SIZE, .type = MT_DEVICE, - }, { - .virtual = XBUS_BASE, - .pfn = __phys_to_pfn(0x40000000), - .length = XBUS_SIZE, - .type = MT_DEVICE, } }; diff --git a/arch/arm/mach-footbridge/ebsa285.c b/arch/arm/mach-footbridge/ebsa285.c index 3ff7a0c30a0f..aee8300f3490 100644 --- a/arch/arm/mach-footbridge/ebsa285.c +++ b/arch/arm/mach-footbridge/ebsa285.c @@ -4,6 +4,7 @@ * EBSA285 machine fixup */ #include <linux/init.h> +#include <linux/io.h> #include <linux/spinlock.h> #include <linux/slab.h> #include <linux/leds.h> @@ -17,6 +18,11 @@ /* LEDs */ #if defined(CONFIG_NEW_LEDS) && defined(CONFIG_LEDS_CLASS) +#define XBUS_AMBER_L BIT(0) +#define XBUS_GREEN_L BIT(1) +#define XBUS_RED_L BIT(2) +#define XBUS_TOGGLE BIT(7) + struct ebsa285_led { struct led_classdev cdev; u8 mask; @@ -36,6 +42,7 @@ static const struct { }; static unsigned char hw_led_state; +static void __iomem *xbus; static void ebsa285_led_set(struct led_classdev *cdev, enum led_brightness b) @@ -47,7 +54,7 @@ static void ebsa285_led_set(struct led_classdev *cdev, hw_led_state |= led->mask; else hw_led_state &= ~led->mask; - *XBUS_LEDS = hw_led_state; + writeb(hw_led_state, xbus); } static enum led_brightness ebsa285_led_get(struct led_classdev *cdev) @@ -65,9 +72,13 @@ static int __init ebsa285_leds_init(void) if (!machine_is_ebsa285()) return -ENODEV; + xbus = ioremap(XBUS_CS2, SZ_4K); + if (!xbus) + return -ENOMEM; + /* 3 LEDS all off */ - hw_led_state = XBUS_LED_AMBER | XBUS_LED_GREEN | XBUS_LED_RED; - *XBUS_LEDS = hw_led_state; + hw_led_state = XBUS_AMBER_L | XBUS_GREEN_L | XBUS_RED_L; + writeb(hw_led_state, xbus); for (i = 0; i < ARRAY_SIZE(ebsa285_leds); i++) { struct ebsa285_led *led; diff --git a/arch/arm/mach-footbridge/include/mach/hardware.h b/arch/arm/mach-footbridge/include/mach/hardware.h index e3d6ccac2162..02f6d7a706b1 100644 --- a/arch/arm/mach-footbridge/include/mach/hardware.h +++ b/arch/arm/mach-footbridge/include/mach/hardware.h @@ -51,11 +51,7 @@ #define PCIMEM_SIZE 0x01000000 #define PCIMEM_BASE MMU_IO(0xf0000000, 0x80000000) -#define XBUS_LEDS ((volatile unsigned char *)(XBUS_BASE + 0x12000)) -#define XBUS_LED_AMBER (1 << 0) -#define XBUS_LED_GREEN (1 << 1) -#define XBUS_LED_RED (1 << 2) -#define XBUS_LED_TOGGLE (1 << 8) +#define XBUS_CS2 0x40012000 #define XBUS_SWITCH ((volatile unsigned char *)(XBUS_BASE + 0x12000)) #define XBUS_SWITCH_SWITCH ((*XBUS_SWITCH) & 15) |