Op 18 dec 2008, om 05:06 heeft Manikandan Pillai het volgende geschreven:
This patch provides support for LCD backlight enable and disable for OMAP3 EVM using TPS6235x based PR785 boards.
Could you hook into the backlight class for this please? regards, Koen
Signed-off-by: Manikandan Pillai <mani.pillai@xxxxxx> --- drivers/video/omap/lcd_omap3evm.c | 22 +++++++++++++++++++++- 1 files changed, 21 insertions(+), 1 deletions(-)diff --git a/drivers/video/omap/lcd_omap3evm.c b/drivers/video/omap/ lcd_omap3evm.cindex 4f373b2..0ea35ba 100644 --- a/drivers/video/omap/lcd_omap3evm.c +++ b/drivers/video/omap/lcd_omap3evm.c @@ -49,6 +49,9 @@ #define TWL_PWMA_PWMAON 0x00 #define TWL_PWMA_PWMAOFF 0x01 +/* GPIO on which Backlight can be switched ON/OFF */ +#define LCD_OMAP3_BKLIGHT_GPIO 141 + static unsigned int bklight_level; static int omap3evm_panel_init(struct lcd_panel *panel,@@ -71,6 +74,10 @@ static int omap3evm_panel_init(struct lcd_panel *panel,twl4030_i2c_write_u8(TWL4030_MODULE_PWMA, 0x01, TWL_PWMA_PWMAON); twl4030_i2c_write_u8(TWL4030_MODULE_PWMA, 0x02, TWL_PWMA_PWMAOFF); #endif +#if defined(CONFIG_PR785) + gpio_request(LCD_OMAP3_BKLIGHT_GPIO, "AE6_34XX_GPIO141"); +#endif + bklight_level = 100; return 0;@@ -108,7 +115,20 @@ static int omap3evm_bklight_setlevel(struct lcd_panel *panel,} return 0; #endif - /* Fix this once patch fix is sent out for TPS-boards */ + +#if defined(CONFIG_OMAP3EVM_PR785) + bklight_level = level; + /* if it is PR785 card the backlight can only be enabled or disable + we will use values <=15 for disable and rest as enabled */ + if (level <= 15) + /* Switch of the backlight for level values <=10 */ + gpio_direction_output(LCD_OMAP3_BKLIGHT_GPIO, 0); + else + gpio_direction_output(LCD_OMAP3_BKLIGHT_GPIO, 1); + + return 0; +#endif + /* if neither of them is defined, it's an error */ return -1; } -- 1.5.6 --To unsubscribe from this list: send the line "unsubscribe linux- omap" inthe body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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