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Diffstat (limited to 'arch/arm/mach-at91/leds.c')
-rw-r--r--arch/arm/mach-at91/leds.c93
1 files changed, 93 insertions, 0 deletions
diff --git a/arch/arm/mach-at91/leds.c b/arch/arm/mach-at91/leds.c
new file mode 100644
index 00000000000..77c4d8fd03f
--- /dev/null
+++ b/arch/arm/mach-at91/leds.c
@@ -0,0 +1,93 @@
+/*
+ * LED driver for Atmel AT91-based boards.
+ *
+ * Copyright (C) SAN People (Pty) Ltd
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+*/
+
+#include <linux/gpio.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/platform_device.h>
+
+#include "board.h"
+#include "gpio.h"
+
+
+/* ------------------------------------------------------------------------- */
+
+#if defined(CONFIG_NEW_LEDS)
+
+/*
+ * New cross-platform LED support.
+ */
+
+static struct gpio_led_platform_data led_data;
+
+static struct platform_device at91_gpio_leds_device = {
+ .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_gpio_leds_device);
+}
+
+#else
+void __init at91_gpio_leds(struct gpio_led *leds, int nr) {}
+#endif
+
+
+/* ------------------------------------------------------------------------- */
+
+#if defined (CONFIG_LEDS_ATMEL_PWM)
+
+/*
+ * PWM Leds
+ */
+
+static struct gpio_led_platform_data pwm_led_data;
+
+static struct platform_device at91_pwm_leds_device = {
+ .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_device);
+}
+#else
+void __init at91_pwm_leds(struct gpio_led *leds, int nr){}
+#endif