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OMAP3EVM: Made backlight GPIO default state to off 

If you choose default output to DVI, the LCD backlight used to
stay on, since panel->disable function never gets called.

So, during init put backlight GPIO to off state and the driver
code will decide which output to enable.

Signed-off-by: Vaibhav Hiremath <hvaibhav@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
This commit is contained in:
Vaibhav Hiremath 2011-01-25 17:37:40 +00:00 committed by Tony Lindgren
parent 904c545c22
commit 42fc8cab02
1 changed files with 8 additions and 2 deletions
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10
arch/arm/mach-omap2/board-omap3evm.c
View File

@ -456,6 +456,8 @@ static struct platform_device leds_gpio = {
static int omap3evm_twl_gpio_setup(struct device *dev, static int omap3evm_twl_gpio_setup(struct device *dev,
unsigned gpio, unsigned ngpio) unsigned gpio, unsigned ngpio)
{ {
int r;
/* gpio + 0 is "mmc0_cd" (input/IRQ) */ /* gpio + 0 is "mmc0_cd" (input/IRQ) */
omap_mux_init_gpio(63, OMAP_PIN_INPUT); omap_mux_init_gpio(63, OMAP_PIN_INPUT);
mmc[0].gpio_cd = gpio + 0; mmc[0].gpio_cd = gpio + 0;
@ -471,8 +473,12 @@ static int omap3evm_twl_gpio_setup(struct device *dev,
*/ */
/* TWL4030_GPIO_MAX + 0 == ledA, LCD Backlight control */ /* TWL4030_GPIO_MAX + 0 == ledA, LCD Backlight control */
gpio_request(gpio + TWL4030_GPIO_MAX, "EN_LCD_BKL"); r = gpio_request(gpio + TWL4030_GPIO_MAX, "EN_LCD_BKL");
gpio_direction_output(gpio + TWL4030_GPIO_MAX, 0); if (!r)
r = gpio_direction_output(gpio + TWL4030_GPIO_MAX,
(get_omap3_evm_rev() >= OMAP3EVM_BOARD_GEN_2) ? 1 : 0);
if (r)
printk(KERN_ERR "failed to get/set lcd_bkl gpio\n");
/* gpio + 7 == DVI Enable */ /* gpio + 7 == DVI Enable */
gpio_request(gpio + 7, "EN_DVI"); gpio_request(gpio + 7, "EN_DVI");