diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/leds/leds-lp5521.c | 26 | ||||
| -rw-r--r-- | drivers/leds/leds-lp5523.c | 23 | ||||
| -rw-r--r-- | drivers/leds/leds-lp55xx-common.c | 22 | ||||
| -rw-r--r-- | drivers/leds/leds-lp55xx-common.h | 20 |
4 files changed, 63 insertions, 28 deletions
diff --git a/drivers/leds/leds-lp5521.c b/drivers/leds/leds-lp5521.c index 124ce80fa115..e1f1dfcd1547 100644 --- a/drivers/leds/leds-lp5521.c +++ b/drivers/leds/leds-lp5521.c @@ -98,6 +98,9 @@ /* Pattern Mode */ #define PATTERN_OFF 0 +/* Reset register value */ +#define LP5521_RESET 0xFF + struct lp5521_engine { int id; u8 mode; @@ -709,26 +712,12 @@ static void lp5521_unregister_sysfs(struct i2c_client *client) &lp5521_led_attribute_group); } -static void lp5521_reset_device(struct lp5521_chip *chip) -{ - struct i2c_client *client = chip->client; - - lp5521_write(client, LP5521_REG_RESET, 0xff); -} - static void lp5521_deinit_device(struct lp5521_chip *chip); static int lp5521_init_device(struct lp5521_chip *chip) { struct i2c_client *client = chip->client; int ret; - lp5521_reset_device(chip); - - usleep_range(10000, 20000); /* - * Exact value is not available. 10 - 20ms - * appears to be enough for reset. - */ - ret = lp5521_detect(client); if (ret) { dev_err(&client->dev, "Chip not found\n"); @@ -856,6 +845,14 @@ static void lp5521_unregister_leds(struct lp5521_chip *chip) } } +/* Chip specific configurations */ +static struct lp55xx_device_config lp5521_cfg = { + .reset = { + .addr = LP5521_REG_RESET, + .val = LP5521_RESET, + }, +}; + static int lp5521_probe(struct i2c_client *client, const struct i2c_device_id *id) { @@ -881,6 +878,7 @@ static int lp5521_probe(struct i2c_client *client, chip->cl = client; chip->pdata = pdata; + chip->cfg = &lp5521_cfg; mutex_init(&chip->lock); diff --git a/drivers/leds/leds-lp5523.c b/drivers/leds/leds-lp5523.c index 8e602047ce35..00547783db77 100644 --- a/drivers/leds/leds-lp5523.c +++ b/drivers/leds/leds-lp5523.c @@ -87,6 +87,7 @@ #define LP5523_AUTO_CLK 0x02 #define LP5523_EN_LEDTEST 0x80 #define LP5523_LEDTEST_DONE 0x80 +#define LP5523_RESET 0xFF #define LP5523_DEFAULT_CURRENT 50 /* microAmps */ #define LP5523_PROGRAM_LENGTH 32 /* in bytes */ @@ -900,25 +901,12 @@ static void lp5523_unregister_leds(struct lp5523_chip *chip) } } -static void lp5523_reset_device(struct lp5523_chip *chip) -{ - struct i2c_client *client = chip->client; - - lp5523_write(client, LP5523_REG_RESET, 0xff); -} - static void lp5523_deinit_device(struct lp5523_chip *chip); static int lp5523_init_device(struct lp5523_chip *chip) { struct i2c_client *client = chip->client; int ret; - lp5523_reset_device(chip); - - usleep_range(10000, 20000); /* - * Exact value is not available. 10 - 20ms - * appears to be enough for reset. - */ ret = lp5523_detect(client); if (ret) goto err; @@ -947,6 +935,14 @@ static void lp5523_deinit_device(struct lp5523_chip *chip) pdata->release_resources(); } +/* Chip specific configurations */ +static struct lp55xx_device_config lp5523_cfg = { + .reset = { + .addr = LP5523_REG_RESET, + .val = LP5523_RESET, + }, +}; + static int lp5523_probe(struct i2c_client *client, const struct i2c_device_id *id) { @@ -972,6 +968,7 @@ static int lp5523_probe(struct i2c_client *client, chip->cl = client; chip->pdata = pdata; + chip->cfg = &lp5523_cfg; mutex_init(&chip->lock); diff --git a/drivers/leds/leds-lp55xx-common.c b/drivers/leds/leds-lp55xx-common.c index 05a854c0d9b2..bbf2bbf03807 100644 --- a/drivers/leds/leds-lp55xx-common.c +++ b/drivers/leds/leds-lp55xx-common.c @@ -20,6 +20,16 @@ #include "leds-lp55xx-common.h" +static void lp55xx_reset_device(struct lp55xx_chip *chip) +{ + struct lp55xx_device_config *cfg = chip->cfg; + u8 addr = cfg->reset.addr; + u8 val = cfg->reset.val; + + /* no error checking here because no ACK from the device after reset */ + lp55xx_write(chip, addr, val); +} + int lp55xx_write(struct lp55xx_chip *chip, u8 reg, u8 val) { return i2c_smbus_write_byte_data(chip->cl, reg, val); @@ -58,14 +68,16 @@ EXPORT_SYMBOL_GPL(lp55xx_update_bits); int lp55xx_init_device(struct lp55xx_chip *chip) { struct lp55xx_platform_data *pdata; + struct lp55xx_device_config *cfg; struct device *dev = &chip->cl->dev; int ret = 0; WARN_ON(!chip); pdata = chip->pdata; + cfg = chip->cfg; - if (!pdata) + if (!pdata || !cfg) return -EINVAL; if (pdata->setup_resources) { @@ -83,6 +95,14 @@ int lp55xx_init_device(struct lp55xx_chip *chip) usleep_range(1000, 2000); /* 500us abs min. */ } + lp55xx_reset_device(chip); + + /* + * Exact value is not available. 10 - 20ms + * appears to be enough for reset. + */ + usleep_range(10000, 20000); + err: return ret; } diff --git a/drivers/leds/leds-lp55xx-common.h b/drivers/leds/leds-lp55xx-common.h index 09d1882ce58e..a73ee0b9a0bd 100644 --- a/drivers/leds/leds-lp55xx-common.h +++ b/drivers/leds/leds-lp55xx-common.h @@ -19,17 +19,37 @@ struct lp55xx_led; struct lp55xx_chip; /* + * struct lp55xx_reg + * @addr : Register address + * @val : Register value + */ +struct lp55xx_reg { + u8 addr; + u8 val; +}; + +/* + * struct lp55xx_device_config + * @reset : Chip specific reset command + */ +struct lp55xx_device_config { + const struct lp55xx_reg reset; +}; + +/* * struct lp55xx_chip * @cl : I2C communication for access registers * @pdata : Platform specific data * @lock : Lock for user-space interface * @num_leds : Number of registered LEDs + * @cfg : Device specific configuration data */ struct lp55xx_chip { struct i2c_client *cl; struct lp55xx_platform_data *pdata; struct mutex lock; /* lock for user-space interface */ int num_leds; + struct lp55xx_device_config *cfg; }; /* |