diff options
| author | Xi Chen <xixi.chen@mediatek.com> | 2018-11-22 10:13:38 +0800 |
|---|---|---|
| committer | Prashanth Swaminathan <prashanthsw@google.com> | 2019-01-09 18:50:38 -0800 |
| commit | 360c90352a50e857ae18113cb1804844411f145e (patch) | |
| tree | 656633838d2eb6e8362da2c0e79f239fd0cc5943 | |
| parent | 129f6ee0715c49bbee4228653ca9508e312c2b98 (diff) | |
| download | mt8516-v4.4-360c90352a50e857ae18113cb1804844411f145e.tar.gz | |
[ALPS04195528] leds: sgm37603a: update min/max brightness value
[Detail]
1 min brightness: 1 --> i2c value: 0x4;
2 max brightness: 255 --> i2c value: 0xba4;
3 zero brightness:0 --> i2c value: 0x0.
Change-Id: I6840a85fb74ec63b169364603f4d3ae902212187
CR-Id: ALPS04195528
Signed-off-by: Xi Chen <xixi.chen@mediatek.com>
| -rw-r--r-- | drivers/leds/leds-sgm37603a.c | 13 |
1 files changed, 8 insertions, 5 deletions
diff --git a/drivers/leds/leds-sgm37603a.c b/drivers/leds/leds-sgm37603a.c index 5a5980546f3f..cb3ac522064e 100644 --- a/drivers/leds/leds-sgm37603a.c +++ b/drivers/leds/leds-sgm37603a.c @@ -220,11 +220,14 @@ static void _sgm37603a_led_set_brightness( if (lp->brightness_limit) val = brightness * lp->brightness_limit / lp->max_brightness; - val *= 14; - if (val > 3533) /* 0xdcd */ - val = 3533; - else if (val < 0x9) - val = 0x9; + + if (val == 1) { /* min brightness: 1 */ + val = 0x4; + } else if (val > 1) { + val *= 12; /* 2980 / 255 + 1 */ + if (val > 2980) /* 0xba4 */ + val = 2980; + } sgm37603a_write_byte(lp, lp->cfg->reg_devicectrl, 0x00); sgm37603a_write_byte(lp, lp->cfg->reg_brightness1, val & 0xF); |