diff options
| -rw-r--r-- | firmware/export/config-meizu-m3.h | 4 | ||||
| -rw-r--r-- | firmware/target/arm/s5l8700/backlight-meizu.c | 8 |
2 files changed, 7 insertions, 5 deletions
diff --git a/firmware/export/config-meizu-m3.h b/firmware/export/config-meizu-m3.h index 9e2d6cb..06a0992 100644 --- a/firmware/export/config-meizu-m3.h +++ b/firmware/export/config-meizu-m3.h @@ -179,6 +179,6 @@ /* Main LCD backlight brightness range and defaults */ #define MIN_BRIGHTNESS_SETTING 0 -#define MAX_BRIGHTNESS_SETTING 255 -#define DEFAULT_BRIGHTNESS_SETTING 200 +#define MAX_BRIGHTNESS_SETTING 15 +#define DEFAULT_BRIGHTNESS_SETTING 10 diff --git a/firmware/target/arm/s5l8700/backlight-meizu.c b/firmware/target/arm/s5l8700/backlight-meizu.c index 43cbb16..23dcbb1 100644 --- a/firmware/target/arm/s5l8700/backlight-meizu.c +++ b/firmware/target/arm/s5l8700/backlight-meizu.c @@ -58,6 +58,8 @@ void INT_TIMERA(void) void _backlight_set_brightness(int brightness) { + static const unsigned char logtable[] = {0, 1, 2, 3, 5, 7, 10, 15, 22, 31, 44, 63, 90, 127, 180, 255}; + if (brightness == MIN_BRIGHTNESS_SETTING) { /* turn backlight fully off and disable interrupt */ PDAT0 &= ~(1 << 2); @@ -70,7 +72,7 @@ void _backlight_set_brightness(int brightness) } else { /* set PWM width and enable interrupt */ - TADATA0 = brightness; + TADATA0 = logtable[brightness]; INTMSK |= (1 << 5); } } @@ -101,8 +103,8 @@ bool _backlight_init(void) (1 << 11) | /* TA_START */ (3 << 8) | /* TA_CS = PCLK / 64 */ (1 << 4); /* TA_MODE_SEL = PWM mode */ - TADATA1 = MAX_BRIGHTNESS_SETTING; /* set PWM period */ - TAPRE = 100; /* prescaler */ + TADATA1 = 255; /* set PWM period */ + TAPRE = 30; /* prescaler */ _backlight_on(); |