168 lines
3.8 KiB
Diff
168 lines
3.8 KiB
Diff
--- a/arch/arm/mach-at91/at91rm9200_devices.c
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+++ b/arch/arm/mach-at91/at91rm9200_devices.c
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@@ -717,6 +717,26 @@ static void __init at91_add_device_watch
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static void __init at91_add_device_watchdog(void) {}
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#endif
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+/* --------------------------------------------------------------------
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+ * LEDs
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+ * -------------------------------------------------------------------- */
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+
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+#if defined(CONFIG_LEDS)
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+u8 at91_leds_cpu;
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+u8 at91_leds_timer;
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+
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+void __init at91_init_leds(u8 cpu_led, u8 timer_led)
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+{
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+ /* Enable GPIO to access the LEDs */
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+ at91_set_gpio_output(cpu_led, 1);
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+ at91_set_gpio_output(timer_led, 1);
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+
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+ at91_leds_cpu = cpu_led;
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+ at91_leds_timer = timer_led;
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+}
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+#else
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+void __init at91_init_leds(u8 cpu_led, u8 timer_led) {}
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+#endif
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/* --------------------------------------------------------------------
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* SSC -- Synchronous Serial Controller
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--- a/arch/arm/mach-at91/Makefile
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+++ b/arch/arm/mach-at91/Makefile
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@@ -60,7 +60,12 @@ obj-$(CONFIG_MACH_AT91CAP9ADK) += board-
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obj-$(CONFIG_MACH_AT91EB01) += board-eb01.o
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# Drivers
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-obj-y += leds.o
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+ifeq ($(CONFIG_MACH_VLINK),y)
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+led-$(CONFIG_MACH_VLINK) += vlink_leds.o
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+else
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+led-y += leds.o
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+endif
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+obj-y += $(led-y)
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obj-$(CONFIG_FB_S1D13XXX) += ics1523.o
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# Power Management
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--- /dev/null
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+++ b/arch/arm/mach-at91/vlink_leds.c
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@@ -0,0 +1,105 @@
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+/*
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+ * LED driver for Atmel AT91-based boards.
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+ *
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+ * Copyright (C) SAN People (Pty) Ltd
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+ * Modified for FDL VersaLink Copyright (C) Guthrie Consulting
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+ *
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+ * This program is free software; you can redistribute it and/or
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+ * modify it under the terms of the GNU General Public License
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+ * as published by the Free Software Foundation; either version
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+ * 2 of the License, or (at your option) any later version.
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+*/
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+
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+#include <linux/kernel.h>
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+#include <linux/module.h>
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+#include <linux/init.h>
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+
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+#include <asm/mach-types.h>
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+#include <asm/leds.h>
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+#include <asm/arch/board.h>
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+#include <asm/arch/gpio.h>
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+
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+
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+static inline void at91_led_on(unsigned int led)
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+{
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+ at91_set_gpio_value(led, 0);
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+}
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+
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+static inline void at91_led_off(unsigned int led)
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+{
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+ at91_set_gpio_value(led, 1);
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+}
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+
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+static inline void at91_led_toggle(unsigned int led)
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+{
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+ unsigned long is_off = at91_get_gpio_value(led);
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+ if (is_off) {
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+ at91_led_on(led);
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+ at91_led_off(at91_leds_cpu);
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+ }
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+ else {
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+ at91_led_on(at91_leds_cpu);
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+ at91_led_off(led);
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+ }
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+}
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+
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+
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+/*
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+ * Handle LED events.
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+ */
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+
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+/*
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+ * VersaLink has a single bi-coloured LED which changes colour when the
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+ * polarity is reversed
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+ */
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+static void at91_leds_event(led_event_t evt)
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+{
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+ unsigned long flags;
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+
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+ local_irq_save(flags);
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+
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+ switch(evt) {
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+ case led_start: /* System startup */
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+ at91_led_toggle(at91_leds_timer);
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+ break;
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+
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+ case led_stop: /* System stop / suspend */
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+ at91_led_toggle(at91_leds_timer);
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+ break;
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+
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+#ifdef CONFIG_LEDS_TIMER
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+ case led_timer: /* Every 50 timer ticks */
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+ at91_led_toggle(at91_leds_timer);
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+ break;
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+#endif
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+
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+#ifdef CONFIG_LEDS_CPU
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+ case led_idle_start: /* Entering idle state */
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+ at91_led_toggle(at91_leds_timer);
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+ break;
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+
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+ case led_idle_end: /* Exit idle state */
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+ at91_led_toggle(at91_leds_timer);
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+ break;
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+#endif
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+
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+ default:
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+ break;
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+ }
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+
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+ local_irq_restore(flags);
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+}
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+
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+
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+static int __init leds_init(void)
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+{
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+ if (!at91_leds_timer || !at91_leds_cpu)
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+ return -ENODEV;
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+
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+ leds_event = at91_leds_event;
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+
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+ leds_event(led_start);
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+ return 0;
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+}
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+
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+__initcall(leds_init);
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--- a/include/asm-arm/arch-at91/board.h
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+++ b/include/asm-arm/arch-at91/board.h
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@@ -162,6 +162,11 @@ extern void __init at91_add_device_ac97(
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/* ISI */
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extern void __init at91_add_device_isi(void);
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+ /* LEDs */
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+extern u8 at91_leds_cpu;
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+extern u8 at91_leds_timer;
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+extern void __init at91_init_leds(u8 cpu_led, u8 timer_led);
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+
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/* Touchscreen Controller */
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extern void __init at91_add_device_tsadcc(void);
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