diff options
Diffstat (limited to 'drivers/i2c')
| -rw-r--r-- | drivers/i2c/chips/pcf50633.c | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/drivers/i2c/chips/pcf50633.c b/drivers/i2c/chips/pcf50633.c index 0a8daf40a3e..d49e9fda443 100644 --- a/drivers/i2c/chips/pcf50633.c +++ b/drivers/i2c/chips/pcf50633.c @@ -2198,6 +2198,20 @@ static int pcf50633_detect(struct i2c_adapter *adapter, int address, int kind) reg_write(pcf, PCF50633_REG_INT4M, 0x00); reg_write(pcf, PCF50633_REG_INT5M, 0x00); + /* force the backlight up, Qi does not do this for us */ + + /* pcf50633 manual p60 + * "led_out should never be set to 000000, as this would result + * in a deadlock making it impossible to program another value. + * If led_out should be inadvertently set to 000000, the + * LEDOUT register can be reset by disabling and enabling the + * LED converter via control bit led_on in the LEDENA register" + */ + reg_write(pcf, PCF50633_REG_LEDENA, 0x00); + reg_write(pcf, PCF50633_REG_LEDDIM, 0x01); + reg_write(pcf, PCF50633_REG_LEDENA, 0x01); + reg_write(pcf, PCF50633_REG_LEDOUT, 0x3f); + err = request_irq(irq, pcf50633_irq, IRQF_TRIGGER_FALLING, "pcf50633", pcf); if (err < 0) @@ -2223,7 +2237,7 @@ static int pcf50633_detect(struct i2c_adapter *adapter, int address, int kind) &pcf50633bl_ops); if (!pcf->backlight) goto exit_rtc; - /* FIXME: are we sure we want default == off? */ + pcf->backlight->props.max_brightness = 0x3f; pcf->backlight->props.power = FB_BLANK_UNBLANK; pcf->backlight->props.fb_blank = FB_BLANK_UNBLANK; |