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Apply FS#9195 (LCD disable for sansa c200), which puts the sansa c200 display controller in standby when the backlight is turned off and thereby improves runtime. I measured 40 minutes improvement over a runtime of about 14h.

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@18198 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Bertrik Sikken 2008-08-05 20:17:17 +00:00
parent b0b72a84ff
commit f2213c8fc2
2 changed files with 25 additions and 1 deletions
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2
firmware/export/config-c200.h
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@ -48,7 +48,7 @@
#define LCD_PIXELFORMAT RGB565 /* rgb565 */ #define LCD_PIXELFORMAT RGB565 /* rgb565 */
/* define this if you have LCD enable function */ /* define this if you have LCD enable function */
/* TODO: #define HAVE_LCD_ENABLE */ #define HAVE_LCD_ENABLE
/* Define this if your LCD can be put to sleep. HAVE_LCD_ENABLE /* Define this if your LCD can be put to sleep. HAVE_LCD_ENABLE
should be defined as well. */ should be defined as well. */

24
firmware/target/arm/sandisk/sansa-c200/lcd-c200.c
View file

@ -26,6 +26,7 @@
/* Display status */ /* Display status */
static unsigned lcd_yuv_options SHAREDBSS_ATTR = 0; static unsigned lcd_yuv_options SHAREDBSS_ATTR = 0;
static bool is_lcd_enabled = true;
/* LCD command set for Samsung S6B33B2 */ /* LCD command set for Samsung S6B33B2 */
@ -189,6 +190,29 @@ void lcd_set_invert_display(bool yesno)
(void)yesno; (void)yesno;
} }
void lcd_enable(bool yesno)
{
if (yesno == is_lcd_enabled)
return;
if (yesno)
{
lcd_send_command(R_STANDBY_OFF);
lcd_send_command(R_DISPLAY_ON);
}
else
{
lcd_send_command(R_STANDBY_ON);
}
is_lcd_enabled = yesno;
}
bool lcd_enabled(void)
{
return is_lcd_enabled;
}
/* turn the display upside down (call lcd_update() afterwards) */ /* turn the display upside down (call lcd_update() afterwards) */
void lcd_set_flip(bool yesno) void lcd_set_flip(bool yesno)
{ {