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leds: Add ASIC3 LED support

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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>
This commit is contained in:
Paul Parsons
2011-05-13 18:52:56 +00:00
committed by Samuel Ortiz
parent 4a7c00cd94
commit 7d9e7e9fbd
4 changed files with 195 additions and 3 deletions
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22
include/linux/mfd/asic3.h
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@@ -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__ */