[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>

arch/arm/mach-at91/Makefile

@@ -45,7 +45,7 @@ obj-$(CONFIG_MACH_AT91SAM9RLEK)	+= board-sam9rlek.o
 obj-$(CONFIG_MACH_AT91EB01)	+= board-eb01.o
 
 # Drivers
-obj-$(CONFIG_LEDS)		+= leds.o
+obj-y				+= leds.o
 
 # Power Management
 obj-$(CONFIG_PM)		+= pm.o

arch/arm/mach-at91/at91rm9200_devices.c

@@ -613,28 +613,6 @@ static void __init at91_add_device_watchdog(void) {}
 #endif
 
 
-/* --------------------------------------------------------------------
- *  LEDs
- * -------------------------------------------------------------------- */
-
-#if defined(CONFIG_LEDS)
-u8 at91_leds_cpu;
-u8 at91_leds_timer;
-
-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
-
-
 /* --------------------------------------------------------------------
  *  SSC -- Synchronous Serial Controller
  * -------------------------------------------------------------------- */

arch/arm/mach-at91/at91sam9260_devices.c

@@ -584,28 +584,6 @@ static void __init at91_add_device_watchdog(void) {}
 #endif
 
 
-/* --------------------------------------------------------------------
- *  LEDs
- * -------------------------------------------------------------------- */
-
-#if defined(CONFIG_LEDS)
-u8 at91_leds_cpu;
-u8 at91_leds_timer;
-
-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
-
-
 /* --------------------------------------------------------------------
  *  SSC -- Synchronous Serial Controller
  * -------------------------------------------------------------------- */

arch/arm/mach-at91/at91sam9261_devices.c

@@ -596,28 +596,6 @@ static void __init at91_add_device_watchdog(void) {}
 #endif
 
 
-/* --------------------------------------------------------------------
- *  LEDs
- * -------------------------------------------------------------------- */
-
-#if defined(CONFIG_LEDS)
-u8 at91_leds_cpu;
-u8 at91_leds_timer;
-
-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
-
-
 /* --------------------------------------------------------------------
  *  SSC -- Synchronous Serial Controller
  * -------------------------------------------------------------------- */

arch/arm/mach-at91/at91sam9263_devices.c

@@ -843,28 +843,6 @@ static void __init at91_add_device_watchdog(void) {}
 #endif
 
 
-/* --------------------------------------------------------------------
- *  LEDs
- * -------------------------------------------------------------------- */
-
-#if defined(CONFIG_LEDS)
-u8 at91_leds_cpu;
-u8 at91_leds_timer;
-
-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
-
-
 /* --------------------------------------------------------------------
  *  SSC -- Synchronous Serial Controller
  * -------------------------------------------------------------------- */

arch/arm/mach-at91/at91sam9rl_devices.c

@@ -449,28 +449,6 @@ static void __init at91_add_device_watchdog(void) {}
 #endif
 
 
-/* --------------------------------------------------------------------
- *  LEDs
- * -------------------------------------------------------------------- */
-
-#if defined(CONFIG_LEDS)
-u8 at91_leds_cpu;
-u8 at91_leds_timer;
-
-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
-
-
 /* --------------------------------------------------------------------
  *  SSC -- Synchronous Serial Controller
  * -------------------------------------------------------------------- */

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

include/asm-arm/arch-at91/board.h

@@ -34,6 +34,7 @@
 #include <linux/mtd/partitions.h>
 #include <linux/device.h>
 #include <linux/i2c.h>
+#include <linux/leds.h>
 #include <linux/spi/spi.h>
 
  /* USB Device */
@@ -157,9 +158,8 @@ extern void __init at91_add_device_ac97(struct atmel_ac97_data *data);
 extern void __init at91_add_device_isi(void);
 
  /* LEDs */
-extern u8 at91_leds_cpu;
-extern u8 at91_leds_timer;
 extern void __init at91_init_leds(u8 cpu_led, u8 timer_led);
+extern void __init at91_gpio_leds(struct gpio_led *leds, int nr);
 
 /* FIXME: this needs a better location, but gets stuff building again */
 extern int at91_suspend_entering_slow_clock(void);