diff options
| author | Milo(Woogyom) Kim <milo.kim@ti.com> | 2013-02-05 12:49:46 +0400 |
|---|---|---|
| committer | Bryan Wu <cooloney@gmail.com> | 2013-02-07 03:59:25 +0400 |
| commit | 944f7b1dedb859f76a88c8d34ce23a90bf6285a0 (patch) | |
| tree | ba55b8a43e9f1077abe7df911292ab9ef43dcf73 /drivers/leds/leds-lp5523.c | |
| parent | 8a4529a38d38f53657769b942f6fc5d34f2c64b5 (diff) | |
| download | linux-944f7b1dedb859f76a88c8d34ce23a90bf6285a0.tar.xz | |
leds-lp55xx: clean up init_device() in lp5521/5523
To make _probe() simple, device initialization code is moved to
_init_device() at each driver.
This patch is a preceding step for lp55xx common driver architecture.
leds-lp5521:
When 'lp5521_init_device()' gets failed, error handling should be 'fail1'
rather than 'fail2'.
fail1: releasing platform resource and return code
fail2: releasing allocated LED devices with handling 'fail1'
The 'lp5521_init_device()' is called before creating LED devices.
Thus, 'goto fail1' is proper error handler of this function.
Signed-off-by: Milo(Woogyom) Kim <milo.kim@ti.com>
Signed-off-by: Bryan Wu <cooloney@gmail.com>
Diffstat (limited to 'drivers/leds/leds-lp5523.c')
| -rw-r--r-- | drivers/leds/leds-lp5523.c | 47 |
1 files changed, 28 insertions, 19 deletions
diff --git a/drivers/leds/leds-lp5523.c b/drivers/leds/leds-lp5523.c index 7f5be8948cde..491ea725bb0b 100644 --- a/drivers/leds/leds-lp5523.c +++ b/drivers/leds/leds-lp5523.c @@ -896,6 +896,33 @@ static int lp5523_init_led(struct lp5523_led *led, struct device *dev, return 0; } +static int lp5523_init_device(struct lp5523_chip *chip) +{ + struct lp5523_platform_data *pdata = chip->pdata; + struct i2c_client *client = chip->client; + int ret; + + if (pdata->setup_resources) { + ret = pdata->setup_resources(); + if (ret < 0) + return ret; + } + + if (pdata->enable) { + pdata->enable(0); + usleep_range(1000, 2000); /* Keep enable down at least 1ms */ + pdata->enable(1); + usleep_range(1000, 2000); /* 500us abs min. */ + } + + lp5523_write(client, LP5523_REG_RESET, 0xff); + usleep_range(10000, 20000); /* + * Exact value is not available. 10 - 20ms + * appears to be enough for reset. + */ + return lp5523_detect(client); +} + static int lp5523_probe(struct i2c_client *client, const struct i2c_device_id *id) { @@ -921,25 +948,7 @@ static int lp5523_probe(struct i2c_client *client, chip->pdata = pdata; - if (pdata->setup_resources) { - ret = pdata->setup_resources(); - if (ret < 0) - return ret; - } - - if (pdata->enable) { - pdata->enable(0); - usleep_range(1000, 2000); /* Keep enable down at least 1ms */ - pdata->enable(1); - usleep_range(1000, 2000); /* 500us abs min. */ - } - - lp5523_write(client, LP5523_REG_RESET, 0xff); - usleep_range(10000, 20000); /* - * Exact value is not available. 10 - 20ms - * appears to be enough for reset. - */ - ret = lp5523_detect(client); + ret = lp5523_init_device(chip); if (ret) goto fail1; |