diff options
Diffstat (limited to 'drivers/leds')
| -rw-r--r-- | drivers/leds/leds-lp5523.c | 67 |
1 files changed, 9 insertions, 58 deletions
diff --git a/drivers/leds/leds-lp5523.c b/drivers/leds/leds-lp5523.c index 71bda3670ff0..2ca41c5af719 100644 --- a/drivers/leds/leds-lp5523.c +++ b/drivers/leds/leds-lp5523.c @@ -199,77 +199,28 @@ static int lp5523_detect(struct i2c_client *client) static int lp5523_configure(struct i2c_client *client) { - struct lp5523_chip *chip = i2c_get_clientdata(client); int ret = 0; - u8 status; - /* one pattern per engine setting led mux start and stop addresses */ - static const u8 pattern[][LP5523_PROGRAM_LENGTH] = { - { 0x9c, 0x30, 0x9c, 0xb0, 0x9d, 0x80, 0xd8, 0x00, 0}, - { 0x9c, 0x40, 0x9c, 0xc0, 0x9d, 0x80, 0xd8, 0x00, 0}, - { 0x9c, 0x50, 0x9c, 0xd0, 0x9d, 0x80, 0xd8, 0x00, 0}, - }; + ret = lp5523_write(client, LP5523_REG_ENABLE, LP5523_ENABLE); + if (ret) + return ret; - ret |= lp5523_write(client, LP5523_REG_ENABLE, LP5523_ENABLE); /* Chip startup time is 500 us, 1 - 2 ms gives some margin */ usleep_range(1000, 2000); - ret |= lp5523_write(client, LP5523_REG_CONFIG, + ret = lp5523_write(client, LP5523_REG_CONFIG, LP5523_AUTO_INC | LP5523_PWR_SAVE | LP5523_CP_AUTO | LP5523_AUTO_CLK | LP5523_PWM_PWR_SAVE); + if (ret) + return ret; /* turn on all leds */ - ret |= lp5523_write(client, LP5523_REG_ENABLE_LEDS_MSB, 0x01); - ret |= lp5523_write(client, LP5523_REG_ENABLE_LEDS_LSB, 0xff); - - /* hardcode 32 bytes of memory for each engine from program memory */ - ret |= lp5523_write(client, LP5523_REG_CH1_PROG_START, 0x00); - ret |= lp5523_write(client, LP5523_REG_CH2_PROG_START, 0x10); - ret |= lp5523_write(client, LP5523_REG_CH3_PROG_START, 0x20); - - /* write led mux address space for each channel */ - ret |= lp5523_load_program(&chip->engines[0], pattern[0]); - ret |= lp5523_load_program(&chip->engines[1], pattern[1]); - ret |= lp5523_load_program(&chip->engines[2], pattern[2]); - - if (ret) { - dev_err(&client->dev, "could not load mux programs\n"); - return -1; - } - - /* set all engines exec state and mode to run 00101010 */ - ret |= lp5523_write(client, LP5523_REG_ENABLE, - (LP5523_CMD_RUN | LP5523_ENABLE)); - - ret |= lp5523_write(client, LP5523_REG_OP_MODE, LP5523_CMD_RUN); - - if (ret) { - dev_err(&client->dev, "could not start mux programs\n"); - return -1; - } - - /* Let the programs run for couple of ms and check the engine status */ - usleep_range(3000, 6000); - ret = lp5523_read(client, LP5523_REG_STATUS, &status); - if (ret < 0) + ret = lp5523_write(client, LP5523_REG_ENABLE_LEDS_MSB, 0x01); + if (ret) return ret; - status &= LP5523_ENG_STATUS_MASK; - - if (status == LP5523_ENG_STATUS_MASK) { - dev_dbg(&client->dev, "all engines configured\n"); - } else { - dev_info(&client->dev, "status == %x\n", status); - dev_err(&client->dev, "cound not configure LED engine\n"); - return -1; - } - - dev_info(&client->dev, "disabling engines\n"); - - ret |= lp5523_write(client, LP5523_REG_OP_MODE, LP5523_CMD_DISABLED); - - return ret; + return lp5523_write(client, LP5523_REG_ENABLE_LEDS_LSB, 0xff); } static int lp5523_set_engine_mode(struct lp5523_engine *engine, u8 mode) |