diff options
| -rw-r--r-- | Documentation/leds/leds-lp5521.txt | 19 | ||||
| -rw-r--r-- | drivers/leds/leds-lp5521.c | 19 | ||||
| -rw-r--r-- | include/linux/leds-lp5521.h | 13 |
3 files changed, 36 insertions, 15 deletions
diff --git a/Documentation/leds/leds-lp5521.txt b/Documentation/leds/leds-lp5521.txt index f48ab757d120..e3c66c64591d 100644 --- a/Documentation/leds/leds-lp5521.txt +++ b/Documentation/leds/leds-lp5521.txt @@ -92,3 +92,22 @@ static struct lp5521_platform_data lp5521_platform_data = { If the current is set to 0 in the platform data, that channel is disabled and it is not visible in the sysfs. + +The 'update_config' : CONFIG register (ADDR 08h) +This value is platform-specific data. +If update_config is not defined, the CONFIG register is set with +'LP5521_PWRSAVE_EN | LP5521_CP_MODE_AUTO | LP5521_R_TO_BATT'. +(Enable auto-powersave, set charge pump to auto, red to battery) + +example of update_config : + +#define LP5521_CONFIGS (LP5521_PWM_HF | LP5521_PWRSAVE_EN | \ + LP5521_CP_MODE_AUTO | LP5521_R_TO_BATT | \ + LP5521_CLK_INT) + +static struct lp5521_platform_data lp5521_pdata = { + .led_config = lp5521_led_config, + .num_channels = ARRAY_SIZE(lp5521_led_config), + .clock_mode = LP5521_CLOCK_INT, + .update_config = LP5521_CONFIGS, +}; diff --git a/drivers/leds/leds-lp5521.c b/drivers/leds/leds-lp5521.c index 59feecdfe3a8..9682ece16011 100644 --- a/drivers/leds/leds-lp5521.c +++ b/drivers/leds/leds-lp5521.c @@ -82,18 +82,6 @@ #define LP5521_LOGARITHMIC_PWM 0x80 /* Logarithmic PWM adjustment */ #define LP5521_EXEC_RUN 0x2A -/* Bits in CONFIG register */ -#define LP5521_PWM_HF 0x40 /* PWM: 0 = 256Hz, 1 = 558Hz */ -#define LP5521_PWRSAVE_EN 0x20 /* 1 = Power save mode */ -#define LP5521_CP_MODE_OFF 0 /* Charge pump (CP) off */ -#define LP5521_CP_MODE_BYPASS 8 /* CP forced to bypass mode */ -#define LP5521_CP_MODE_1X5 0x10 /* CP forced to 1.5x mode */ -#define LP5521_CP_MODE_AUTO 0x18 /* Automatic mode selection */ -#define LP5521_R_TO_BATT 4 /* R out: 0 = CP, 1 = Vbat */ -#define LP5521_CLK_SRC_EXT 0 /* Ext-clk source (CLK_32K) */ -#define LP5521_CLK_INT 1 /* Internal clock */ -#define LP5521_CLK_AUTO 2 /* Automatic clock selection */ - /* Status */ #define LP5521_EXT_CLK_USED 0x08 @@ -241,15 +229,16 @@ static int lp5521_configure(struct i2c_client *client) { struct lp5521_chip *chip = i2c_get_clientdata(client); int ret; + u8 cfg; lp5521_init_engine(chip); /* Set all PWMs to direct control mode */ ret = lp5521_write(client, LP5521_REG_OP_MODE, 0x3F); - /* Enable auto-powersave, set charge pump to auto, red to battery */ - ret |= lp5521_write(client, LP5521_REG_CONFIG, - LP5521_PWRSAVE_EN | LP5521_CP_MODE_AUTO | LP5521_R_TO_BATT); + cfg = chip->pdata->update_config ? + : (LP5521_PWRSAVE_EN | LP5521_CP_MODE_AUTO | LP5521_R_TO_BATT); + ret |= lp5521_write(client, LP5521_REG_CONFIG, cfg); /* Initialize all channels PWM to zero -> leds off */ ret |= lp5521_write(client, LP5521_REG_R_PWM, 0); diff --git a/include/linux/leds-lp5521.h b/include/linux/leds-lp5521.h index e675b8d4c7bf..e9ab583cac36 100644 --- a/include/linux/leds-lp5521.h +++ b/include/linux/leds-lp5521.h @@ -36,6 +36,18 @@ struct lp5521_led_config { #define LP5521_CLOCK_INT 1 #define LP5521_CLOCK_EXT 2 +/* Bits in CONFIG register */ +#define LP5521_PWM_HF 0x40 /* PWM: 0 = 256Hz, 1 = 558Hz */ +#define LP5521_PWRSAVE_EN 0x20 /* 1 = Power save mode */ +#define LP5521_CP_MODE_OFF 0 /* Charge pump (CP) off */ +#define LP5521_CP_MODE_BYPASS 8 /* CP forced to bypass mode */ +#define LP5521_CP_MODE_1X5 0x10 /* CP forced to 1.5x mode */ +#define LP5521_CP_MODE_AUTO 0x18 /* Automatic mode selection */ +#define LP5521_R_TO_BATT 4 /* R out: 0 = CP, 1 = Vbat */ +#define LP5521_CLK_SRC_EXT 0 /* Ext-clk source (CLK_32K) */ +#define LP5521_CLK_INT 1 /* Internal clock */ +#define LP5521_CLK_AUTO 2 /* Automatic clock selection */ + struct lp5521_platform_data { struct lp5521_led_config *led_config; u8 num_channels; @@ -44,6 +56,7 @@ struct lp5521_platform_data { void (*release_resources)(void); void (*enable)(bool state); const char *label; + u8 update_config; }; #endif /* __LINUX_LP5521_H */ |