leds: Add ASIC3 LED support

Add LED support for the HTC ASIC3. Underlying support is provided by the mfd/asic3 and leds/leds-asic3 drivers. An example configuration is provided by the pxa/hx4700 platform.

Signed-off-by: Paul Parsons <lost.distance@yahoo.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

1 files changed, 19 insertions, 3 deletions

diff --git a/include/linux/mfd/asic3.h b/include/linux/mfd/asic3.h
index de3c4ad19afb..d0dd3ebd8488 100644
--- a/include/linux/mfd/asic3.h
+++ b/include/linux/mfd/asic3.h
@@ -16,6 +16,13 @@
 
 #include <linux/types.h>
 
+struct led_classdev;
+struct asic3_led {
+        const char      *name;
+        const char      *default_trigger;
+        struct led_classdev *cdev;
+};
+
 struct asic3_platform_data {
         u16 *gpio_config;
         unsigned int gpio_config_num;
@@ -23,6 +30,8 @@ struct asic3_platform_data {
         unsigned int irq_base;
 
         unsigned int gpio_base;
+
+        struct asic3_led *leds;
 };
 
 #define ASIC3_NUM_GPIO_BANKS    4
@@ -111,9 +120,9 @@ struct asic3_platform_data {
 #define ASIC3_GPIOA11_PWM0              ASIC3_CONFIG_GPIO(11, 1, 1, 0)
 #define ASIC3_GPIOA12_PWM1              ASIC3_CONFIG_GPIO(12, 1, 1, 0)
 #define ASIC3_GPIOA15_CONTROL_CX        ASIC3_CONFIG_GPIO(15, 1, 1, 0)
-#define ASIC3_GPIOC0_LED0               ASIC3_CONFIG_GPIO(32, 1, 1, 0)
-#define ASIC3_GPIOC1_LED1               ASIC3_CONFIG_GPIO(33, 1, 1, 0)
-#define ASIC3_GPIOC2_LED2               ASIC3_CONFIG_GPIO(34, 1, 1, 0)
+#define ASIC3_GPIOC0_LED0               ASIC3_CONFIG_GPIO(32, 1, 0, 0)
+#define ASIC3_GPIOC1_LED1               ASIC3_CONFIG_GPIO(33, 1, 0, 0)
+#define ASIC3_GPIOC2_LED2               ASIC3_CONFIG_GPIO(34, 1, 0, 0)
 #define ASIC3_GPIOC3_SPI_RXD            ASIC3_CONFIG_GPIO(35, 1, 0, 0)
 #define ASIC3_GPIOC4_CF_nCD             ASIC3_CONFIG_GPIO(36, 1, 0, 0)
 #define ASIC3_GPIOC4_SPI_TXD            ASIC3_CONFIG_GPIO(36, 1, 1, 0)
@@ -152,6 +161,7 @@ struct asic3_platform_data {
 #define PWM_TIMEBASE_VALUE(x)    ((x)&0xf)   /* Low 4 bits sets time base */
 #define PWM_TIMEBASE_ENABLE     (1 << 4)   /* Enable clock */
 
+#define ASIC3_NUM_LEDS                  3
 #define ASIC3_LED_0_Base                0x0700
 #define ASIC3_LED_1_Base                0x0800
 #define ASIC3_LED_2_Base                      0x0900
@@ -293,4 +303,10 @@ struct asic3_platform_data {
 #define ASIC3_MAP_SIZE_32BIT    0x2000
 #define ASIC3_MAP_SIZE_16BIT    0x1000
 
+/* Functions needed by leds-asic3 */
+
+struct asic3;
+extern void asic3_write_register(struct asic3 *asic, unsigned int reg, u32 val);
+extern u32 asic3_read_register(struct asic3 *asic, unsigned int reg);
+
 #endif /* __ASIC3_H__ */