diff options
| author | Kim, Milo <Milo.Kim@ti.com> | 2012-03-23 15:02:08 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2012-03-23 16:58:34 -0700 |
| commit | 3b49aacd0e56d5bf1b511f6554f17cd65eb8da64 (patch) | |
| tree | 22da84acf260e760e68006afa03346342a518f84 /drivers/leds/leds-lp5521.c | |
| parent | 5ae4e8a77dc82afcfe8460168ec0b94f4b79a54a (diff) | |
drivers/leds/leds-lp5521.c: add 'update_config' in the lp5521_platform_data
The value of CONFIG register(Addr 08h) is configurable. For supporting
this feature, update_config is added in the platform data. If
'update_config' is not defined, the default value is 'LP5521_PWRSAVE_EN |
LP5521_CP_MODE_AUTO | LP5521_R_TO_BATT'.
To define CONFIG register in the platform data, the bit definitions were
mo= ved to the header file.
Documentation updated : description about 'update_config' and example.
Signed-off-by: Milo(Woogyom) Kim <milo.kim@ti.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Cc: Arun MURTHY <arun.murthy@stericsson.com>
Cc: Srinidhi Kasagar <srinidhi.kasagar@stericsson.com>
Cc: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/leds/leds-lp5521.c')
| -rw-r--r-- | drivers/leds/leds-lp5521.c | 19 |
1 files changed, 4 insertions, 15 deletions
diff --git a/drivers/leds/leds-lp5521.c b/drivers/leds/leds-lp5521.c index 59feecdfe3a..9682ece1601 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); |