OMAP: Add gpio-leds support for Overo

This patch adds support for the standard LEDs on the Overo COM and expansion boards

Signed-off-by: Steve Sakoman <steve@sakoman.com>
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>

1 files changed, 53 insertions, 0 deletions

diff --git a/arch/arm/mach-omap2/board-overo.c b/arch/arm/mach-omap2/board-overo.c
index 4278ecb799a..e694ebd2636 100644
--- a/arch/arm/mach-omap2/board-overo.c
+++ b/arch/arm/mach-omap2/board-overo.c
@@ -473,6 +473,52 @@ static struct regulator_consumer_supply overo_vmmc1_supply = {
         .supply                 = "vmmc",
 };
 
+#if defined(CONFIG_LEDS_GPIO) || defined(CONFIG_LEDS_GPIO_MODULE)
+#include <linux/leds.h>
+
+static struct gpio_led gpio_leds[] = {
+        {
+                .name                   = "overo:red:gpio21",
+                .default_trigger        = "heartbeat",
+                .gpio                   = 21,
+                .active_low             = true,
+        },
+        {
+                .name                   = "overo:blue:gpio22",
+                .default_trigger        = "none",
+                .gpio                   = 22,
+                .active_low             = true,
+        },
+        {
+                .name                   = "overo:blue:COM",
+                .default_trigger        = "mmc0",
+                .gpio                   = -EINVAL,      /* gets replaced */
+                .active_low             = true,
+        },
+};
+
+static struct gpio_led_platform_data gpio_leds_pdata = {
+        .leds           = gpio_leds,
+        .num_leds       = ARRAY_SIZE(gpio_leds),
+};
+
+static struct platform_device gpio_leds_device = {
+        .name   = "leds-gpio",
+        .id     = -1,
+        .dev    = {
+                .platform_data  = &gpio_leds_pdata,
+        },
+};
+
+static void __init overo_init_led(void)
+{
+        platform_device_register(&gpio_leds_device);
+}
+
+#else
+static inline void __init overo_init_led(void) { return; }
+#endif
+
 static int overo_twl_gpio_setup(struct device *dev,
                 unsigned gpio, unsigned ngpio)
 {
@@ -480,6 +526,11 @@ static int overo_twl_gpio_setup(struct device *dev,
 
         overo_vmmc1_supply.dev = mmc[0].dev;
 
+#if defined(CONFIG_LEDS_GPIO) || defined(CONFIG_LEDS_GPIO_MODULE)
+        /* TWL4030_GPIO_MAX + 1 == ledB, PMU_STAT (out, active low LED) */
+        gpio_leds[2].gpio = gpio + TWL4030_GPIO_MAX + 1;
+#endif
+
         return 0;
 }
 
@@ -487,6 +538,7 @@ static struct twl4030_gpio_platform_data overo_gpio_data = {
         .gpio_base      = OMAP_MAX_GPIO_LINES,
         .irq_base       = TWL4030_GPIO_IRQ_BASE,
         .irq_end        = TWL4030_GPIO_IRQ_END,
+        .use_leds       = true,
         .setup          = overo_twl_gpio_setup,
 };
 
@@ -648,6 +700,7 @@ static void __init overo_init(void)
         overo_spi_init();
         overo_init_smsc911x();
         overo_display_init();
+        overo_init_led();
 
         /* Ensure SDRC pins are mux'd for self-refresh */
         omap_mux_init_signal("sdrc_cke0", OMAP_PIN_OUTPUT);