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authorAndrew Victor <linux@maxim.org.za>2008-09-22 00:31:16 +0400
committerRussell King <rmk+kernel@arm.linux.org.uk>2008-09-22 01:58:38 +0400
commita7307bf22557e1e029df0ea6f2a2973de4d9c135 (patch)
treec1db7709cc089b3494ed6a0e97ca0dd5dbeece88 /arch/arm/mach-at91/leds.c
parentbb1ad68b96a68e577a87ad62fe1aa26d052a52b5 (diff)
downloadlinux-a7307bf22557e1e029df0ea6f2a2973de4d9c135.tar.xz
[ARM] 5259/2: [AT91] PWM LEDs on AT91SAM9263-EK
Use the PWM controller and leds-atmel-pwm.c driver to drive a LED on the Atmel AT91SAM9263-EK board. Signed-off-by: Sedji Gaouaou <sedji.gaouaou@atmel.com> 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.c41
1 files changed, 39 insertions, 2 deletions
diff --git a/arch/arm/mach-at91/leds.c b/arch/arm/mach-at91/leds.c
index fec03c59ff94..ff76d59392cc 100644
--- a/arch/arm/mach-at91/leds.c
+++ b/arch/arm/mach-at91/leds.c
@@ -12,6 +12,7 @@
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/init.h>
+#include <linux/platform_device.h>
#include <mach/board.h>
#include <mach/gpio.h>
@@ -21,8 +22,6 @@
#if defined(CONFIG_NEW_LEDS)
-#include <linux/platform_device.h>
-
/*
* New cross-platform LED support.
*/
@@ -57,6 +56,44 @@ void __init at91_gpio_leds(struct gpio_led *leds, int nr) {}
/* ------------------------------------------------------------------------- */
+#if defined (CONFIG_LEDS_ATMEL_PWM)
+
+/*
+ * PWM Leds
+ */
+
+static struct gpio_led_platform_data pwm_led_data;
+
+static struct platform_device at91_pwm_leds = {
+ .name = "leds-atmel-pwm",
+ .id = -1,
+ .dev.platform_data = &pwm_led_data,
+};
+
+void __init at91_pwm_leds(struct gpio_led *leds, int nr)
+{
+ int i;
+ u32 pwm_mask = 0;
+
+ if (!nr)
+ return;
+
+ for (i = 0; i < nr; i++)
+ pwm_mask |= (1 << leds[i].gpio);
+
+ pwm_led_data.leds = leds;
+ pwm_led_data.num_leds = nr;
+
+ at91_add_device_pwm(pwm_mask);
+ platform_device_register(&at91_pwm_leds);
+}
+#else
+void __init at91_pwm_leds(struct gpio_led *leds, int nr){}
+#endif
+
+
+/* ------------------------------------------------------------------------- */
+
#if defined(CONFIG_LEDS)
#include <asm/leds.h>