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| author | Mihail Zenkov <Mihail_Zenkov@rockbox.org> | 2014-09-28 00:26:29 +0200 |
|---|---|---|
| committer | Michael Giacomelli <giac2000@hotmail.com> | 2014-09-28 21:07:58 +0200 |
| commit | 23dc0b01794fe8001a76eb4371afdc9326648357 (patch) | |
| tree | 9bc5aab488170e1a98bd8d0491c784b8b65a87f0 /firmware/target/arm/as3525 | |
| parent | 02414bf286e4ff6a08d19e951bff1e0905d330b4 (diff) | |
| download | rockbox-23dc0b01794fe8001a76eb4371afdc9326648357.tar.gz rockbox-23dc0b01794fe8001a76eb4371afdc9326648357.tar.bz2 rockbox-23dc0b01794fe8001a76eb4371afdc9326648357.zip | |
Don't enable the current sink for the Clip Zip backlight until its actually needed.
Patch by Mihail Zenkov who measured a modest increase in power consumption with
the current sink enabled.
Change-Id: Ib1c1639318de35d449ca51a9bd480005cb6a2ee0
Reviewed-on: http://gerrit.rockbox.org/989
Reviewed-by: Michael Giacomelli <giac2000@hotmail.com>
Tested: Michael Giacomelli <giac2000@hotmail.com>
Diffstat (limited to 'firmware/target/arm/as3525')
| -rw-r--r-- | firmware/target/arm/as3525/sansa-clipzip/backlight-clipzip.c | 9 |
1 files changed, 4 insertions, 5 deletions
diff --git a/firmware/target/arm/as3525/sansa-clipzip/backlight-clipzip.c b/firmware/target/arm/as3525/sansa-clipzip/backlight-clipzip.c index fd44d76cac..a47941bbd7 100644 --- a/firmware/target/arm/as3525/sansa-clipzip/backlight-clipzip.c +++ b/firmware/target/arm/as3525/sansa-clipzip/backlight-clipzip.c @@ -29,16 +29,14 @@ bool _backlight_init() { - /* GPIO B1 controls backlight */ - GPIOB_DIR |= (1 << 1); - ascodec_write_pmu(AS3543_BACKLIGHT, 1, 0x91); - GPIOB_PIN(1) = (1 << 1); - return true; } void _backlight_on(void) { + /* GPIO B1 controls backlight */ + GPIOB_DIR |= (1 << 1); + ascodec_write_pmu(AS3543_BACKLIGHT, 1, 0x90); GPIOB_PIN(1) = (1 << 1); #ifdef HAVE_LCD_ENABLE lcd_enable(true); @@ -50,6 +48,7 @@ void _backlight_off(void) #ifdef HAVE_LCD_ENABLE lcd_enable(false); #endif + ascodec_write_pmu(AS3543_BACKLIGHT, 1, 0); GPIOB_PIN(1) = 0; } |