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authorAndrew Victor <linux@maxim.org.za>2008-01-23 09:27:06 +0100
committerRussell King <rmk+kernel@arm.linux.org.uk>2008-01-26 15:00:32 +0000
commita04ff1af9723607f5901b79c559357e37cee6823 (patch)
treed0937006f8f80916f3a78236523953222a9a312e /arch/arm/mach-at91/leds.c
parentc8f385a631ef1f49d67a3798ca40dec36ccdf07d (diff)
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[ARM] 4758/1: [AT91] LEDs
Move the LED initialization code out of the various *_devices.c files, and into leds.c. Also add support for NEW_LEDs. Patch from David Brownell. Signed-off-by: Andrew Victor <linux@maxim.org.za> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/mach-at91/leds.c')
-rw-r--r--arch/arm/mach-at91/leds.c68
1 files changed, 67 insertions, 1 deletions
diff --git a/arch/arm/mach-at91/leds.c b/arch/arm/mach-at91/leds.c
index 0d51449..9cdcda5 100644
--- a/arch/arm/mach-at91/leds.c
+++ b/arch/arm/mach-at91/leds.c
@@ -14,11 +14,62 @@
#include <linux/init.h>
#include <asm/mach-types.h>
-#include <asm/leds.h>
#include <asm/arch/board.h>
#include <asm/arch/gpio.h>
+/* ------------------------------------------------------------------------- */
+
+#if defined(CONFIG_NEW_LEDS)
+
+#include <linux/platform_device.h>
+
+/*
+ * New cross-platform LED support.
+ */
+
+static struct gpio_led_platform_data led_data;
+
+static struct platform_device at91_leds = {
+ .name = "leds-gpio",
+ .id = -1,
+ .dev.platform_data = &led_data,
+};
+
+void __init at91_gpio_leds(struct gpio_led *leds, int nr)
+{
+ int i;
+
+ if (!nr)
+ return;
+
+ for (i = 0; i < nr; i++)
+ at91_set_gpio_output(leds[i].gpio, leds[i].active_low);
+
+ led_data.leds = leds;
+ led_data.num_leds = nr;
+ platform_device_register(&at91_leds);
+}
+
+#else
+void __init at91_gpio_leds(struct gpio_led *leds, int nr) {}
+#endif
+
+
+/* ------------------------------------------------------------------------- */
+
+#if defined(CONFIG_LEDS)
+
+#include <asm/leds.h>
+
+/*
+ * Old ARM-specific LED framework; not fully functional when generic time is
+ * in use.
+ */
+
+static u8 at91_leds_cpu;
+static u8 at91_leds_timer;
+
static inline void at91_led_on(unsigned int led)
{
at91_set_gpio_value(led, 0);
@@ -93,3 +144,18 @@ static int __init leds_init(void)
}
__initcall(leds_init);
+
+
+void __init at91_init_leds(u8 cpu_led, u8 timer_led)
+{
+ /* Enable GPIO to access the LEDs */
+ at91_set_gpio_output(cpu_led, 1);
+ at91_set_gpio_output(timer_led, 1);
+
+ at91_leds_cpu = cpu_led;
+ at91_leds_timer = timer_led;
+}
+
+#else
+void __init at91_init_leds(u8 cpu_led, u8 timer_led) {}
+#endif