Messages in this thread Patch in this message | | | From | "Kim, Milo" <> | Date | Sat, 21 Jan 2012 10:09:40 -0800 | Subject | [PATCH 4/4] leds-lp5521: redefinition of register bits |
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For better readability, values of LP5521_REG_ENABLE register were redefined. Additional definitions: LP5521_ENABLE_DEFAULT and LP5521_ENABLE_RUN_PROGRAM.
Use definition rather than hard code value. : 0x3F -> 'LP5521_CMD_DIRECT'
Signed-off-by: Milo(Woogyom) Kim <milo.kim@ti.com> --- drivers/leds/leds-lp5521.c | 21 ++++++++++----------- 1 files changed, 10 insertions(+), 11 deletions(-)
diff --git a/drivers/leds/leds-lp5521.c b/drivers/leds/leds-lp5521.c index 471cef1..8368ce4 100644 --- a/drivers/leds/leds-lp5521.c +++ b/drivers/leds/leds-lp5521.c @@ -81,6 +81,10 @@ #define LP5521_MASTER_ENABLE 0x40 /* Chip master enable */ #define LP5521_LOGARITHMIC_PWM 0x80 /* Logarithmic PWM adjustment */ #define LP5521_EXEC_RUN 0x2A +#define LP5521_ENABLE_DEFAULT \ + (LP5521_MASTER_ENABLE | LP5521_LOGARITHMIC_PWM) +#define LP5521_ENABLE_RUN_PROGRAM \ + (LP5521_ENABLE_DEFAULT | LP5521_EXEC_RUN) /* Status */ #define LP5521_EXT_CLK_USED 0x08 @@ -234,7 +238,7 @@ static int lp5521_configure(struct i2c_client *client) lp5521_init_engine(chip); /* Set all PWMs to direct control mode */ - ret = lp5521_write(client, LP5521_REG_OP_MODE, 0x3F); + ret = lp5521_write(client, LP5521_REG_OP_MODE, LP5521_CMD_DIRECT); cfg = chip->pdata->update_config ? : (LP5521_PWRSAVE_EN | LP5521_CP_MODE_AUTO | LP5521_R_TO_BATT); @@ -247,8 +251,7 @@ static int lp5521_configure(struct i2c_client *client) /* Set engines are set to run state when OP_MODE enables engines */ ret |= lp5521_write(client, LP5521_REG_ENABLE, - LP5521_MASTER_ENABLE | LP5521_LOGARITHMIC_PWM | - LP5521_EXEC_RUN); + LP5521_ENABLE_RUN_PROGRAM); /* enable takes 500us. 1 - 2 ms leaves some margin */ usleep_range(1000, 2000); @@ -299,8 +302,7 @@ static int lp5521_detect(struct i2c_client *client) int ret; u8 buf; - ret = lp5521_write(client, LP5521_REG_ENABLE, - LP5521_MASTER_ENABLE | LP5521_LOGARITHMIC_PWM); + ret = lp5521_write(client, LP5521_REG_ENABLE, LP5521_ENABLE_DEFAULT); if (ret) return ret; /* enable takes 500us. 1 - 2 ms leaves some margin */ @@ -308,7 +310,7 @@ static int lp5521_detect(struct i2c_client *client) ret = lp5521_read(client, LP5521_REG_ENABLE, &buf); if (ret) return ret; - if (buf != (LP5521_MASTER_ENABLE | LP5521_LOGARITHMIC_PWM)) + if (buf != LP5521_ENABLE_DEFAULT) return -ENODEV; return 0; @@ -573,8 +575,7 @@ static void lp5521_run_led_pattern(int mode, struct lp5521_chip *chip) return; if (mode == PATTERN_OFF) { - lp5521_write(cl, LP5521_REG_ENABLE, - LP5521_MASTER_ENABLE | LP5521_LOGARITHMIC_PWM); + lp5521_write(cl, LP5521_REG_ENABLE, LP5521_ENABLE_DEFAULT); usleep_range(1000, 2000); lp5521_write(cl, LP5521_REG_OP_MODE, LP5521_CMD_DIRECT); } else { @@ -596,9 +597,7 @@ static void lp5521_run_led_pattern(int mode, struct lp5521_chip *chip) lp5521_write(cl, LP5521_REG_OP_MODE, LP5521_CMD_RUN); usleep_range(1000, 2000); - lp5521_write(cl, LP5521_REG_ENABLE, - LP5521_MASTER_ENABLE | LP5521_LOGARITHMIC_PWM | - LP5521_EXEC_RUN); + lp5521_write(cl, LP5521_REG_ENABLE, LP5521_ENABLE_RUN_PROGRAM); } } -- 1.7.4.1
Best Regards, Milo (Woogyom) Kim Texas Instruments Incorporated
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