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Patch #1404233 by Peter D'Hoye: H300 brightness bugfix

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@8387 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Hristo Kovachev 2006-01-19 13:10:15 +00:00
parent acf7d5e89e
commit 4926682378
3 changed files with 21 additions and 27 deletions
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24
firmware/backlight.c
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@ -547,13 +547,29 @@ void remote_backlight_set_timeout(int index) {(void)index;}
#endif /* #ifdef CONFIG_BACKLIGHT */
#ifdef HAVE_BACKLIGHT_BRIGHTNESS
#ifdef IRIVER_H300_SERIES
void backlight_set_brightness(int val)
{
/* set H300 brightness by changing the PWM
accepts 0..15 but note that 0 and 1 gives a black display! */
if(val < MIN_BRIGHTNESS_SETTING)
val = MIN_BRIGHTNESS_SETTING;
pcf50606_set_bl_pwm(val & 0xf);
accepts 0..15 but note that 0 and 1 give a black display! */
val &= 0x0F;
if(val<MIN_BRIGHTNESS_SETTING)
val=MIN_BRIGHTNESS_SETTING;
/* shift one bit left */
val <<= 1;
/* enable PWM */
val |= 0x01;
/* disable IRQs while bitbanging */
int old_irq_level = set_irq_level(HIGHEST_IRQ_LEVEL);
pcf50606_write(0x35, val);
/* enable IRQs again */
set_irq_level(old_irq_level);
}
#endif
#endif