diff options
| author | Milo(Woogyom) Kim <milo.kim@ti.com> | 2013-02-05 18:09:56 +0900 |
|---|---|---|
| committer | Bryan Wu <cooloney@gmail.com> | 2013-02-06 15:59:27 -0800 |
| commit | e3a700d8aae190e09fb06abe0ddd2e172a682508 (patch) | |
| tree | 3cc952ab61cfb1219f2a43a5e0e738dd2fd7ae10 /drivers/leds/leds-lp5521.c | |
| parent | 48068d5de16c23c256c085b2cd3ff03bec393900 (diff) | |
| download | linux-e3a700d8aae190e09fb06abe0ddd2e172a682508.tar.bz2 | |
leds-lp55xx: use lp55xx common init function - detect
LP5521/5523 chip detection functions are replaced with lp55xx common function,
lp55xx_detect_device().
Chip dependent address and values are configurable in each driver.
In init function, chip detection is executed.
Signed-off-by: Milo(Woogyom) Kim <milo.kim@ti.com>
Signed-off-by: Bryan Wu <cooloney@gmail.com>
Diffstat (limited to 'drivers/leds/leds-lp5521.c')
| -rw-r--r-- | drivers/leds/leds-lp5521.c | 31 |
1 files changed, 4 insertions, 27 deletions
diff --git a/drivers/leds/leds-lp5521.c b/drivers/leds/leds-lp5521.c index e1f1dfcd1547..0e27f7eb5d09 100644 --- a/drivers/leds/leds-lp5521.c +++ b/drivers/leds/leds-lp5521.c @@ -328,26 +328,6 @@ static void lp5521_led_brightness_work(struct work_struct *work) mutex_unlock(&chip->lock); } -/* Detect the chip by setting its ENABLE register and reading it back. */ -static int lp5521_detect(struct i2c_client *client) -{ - int ret; - u8 buf; - - ret = lp5521_write(client, LP5521_REG_ENABLE, LP5521_ENABLE_DEFAULT); - if (ret) - return ret; - /* enable takes 500us. 1 - 2 ms leaves some margin */ - usleep_range(1000, 2000); - ret = lp5521_read(client, LP5521_REG_ENABLE, &buf); - if (ret) - return ret; - if (buf != LP5521_ENABLE_DEFAULT) - return -ENODEV; - - return 0; -} - /* Set engine mode and create appropriate sysfs attributes, if required. */ static int lp5521_set_mode(struct lp5521_engine *engine, u8 mode) { @@ -718,12 +698,6 @@ static int lp5521_init_device(struct lp5521_chip *chip) struct i2c_client *client = chip->client; int ret; - ret = lp5521_detect(client); - if (ret) { - dev_err(&client->dev, "Chip not found\n"); - goto err; - } - ret = lp5521_configure(client); if (ret < 0) { dev_err(&client->dev, "error configuring chip\n"); @@ -734,7 +708,6 @@ static int lp5521_init_device(struct lp5521_chip *chip) err_config: lp5521_deinit_device(chip); -err: return ret; } @@ -851,6 +824,10 @@ static struct lp55xx_device_config lp5521_cfg = { .addr = LP5521_REG_RESET, .val = LP5521_RESET, }, + .enable = { + .addr = LP5521_REG_ENABLE, + .val = LP5521_ENABLE_DEFAULT, + }, }; static int lp5521_probe(struct i2c_client *client, |