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author | Mihail Zenkov <Mihail_Zenkov@rockbox.org> | 2014-09-28 00:26:29 +0200 |
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committer | Michael Giacomelli <giac2000@hotmail.com> | 2014-09-28 21:07:58 +0200 |
commit | 23dc0b01794fe8001a76eb4371afdc9326648357 (patch) | |
tree | 9bc5aab488170e1a98bd8d0491c784b8b65a87f0 | |
parent | 02414bf286e4ff6a08d19e951bff1e0905d330b4 (diff) | |
download | rockbox-23dc0b01794fe8001a76eb4371afdc9326648357.tar.gz 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>
-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 @@ | |||
29 | 29 | ||
30 | bool _backlight_init() | 30 | bool _backlight_init() |
31 | { | 31 | { |
32 | /* GPIO B1 controls backlight */ | ||
33 | GPIOB_DIR |= (1 << 1); | ||
34 | ascodec_write_pmu(AS3543_BACKLIGHT, 1, 0x91); | ||
35 | GPIOB_PIN(1) = (1 << 1); | ||
36 | |||
37 | return true; | 32 | return true; |
38 | } | 33 | } |
39 | 34 | ||
40 | void _backlight_on(void) | 35 | void _backlight_on(void) |
41 | { | 36 | { |
37 | /* GPIO B1 controls backlight */ | ||
38 | GPIOB_DIR |= (1 << 1); | ||
39 | ascodec_write_pmu(AS3543_BACKLIGHT, 1, 0x90); | ||
42 | GPIOB_PIN(1) = (1 << 1); | 40 | GPIOB_PIN(1) = (1 << 1); |
43 | #ifdef HAVE_LCD_ENABLE | 41 | #ifdef HAVE_LCD_ENABLE |
44 | lcd_enable(true); | 42 | lcd_enable(true); |
@@ -50,6 +48,7 @@ void _backlight_off(void) | |||
50 | #ifdef HAVE_LCD_ENABLE | 48 | #ifdef HAVE_LCD_ENABLE |
51 | lcd_enable(false); | 49 | lcd_enable(false); |
52 | #endif | 50 | #endif |
51 | ascodec_write_pmu(AS3543_BACKLIGHT, 1, 0); | ||
53 | GPIOB_PIN(1) = 0; | 52 | GPIOB_PIN(1) = 0; |
54 | } | 53 | } |
55 | 54 | ||