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google/oak: Configure backlight control pins 

Since backlight is controlled in depthcharge, we only configure
control pins as output pin and set them power-off in the coreboot
stage.

BRANCH=none
BUG=none
TEST=Saw DEV screen during boot process.

Change-Id: I3ed95e133417194ec8e774f42770bc61d879295f
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Original-Commit-Id: e9628781801943903ba99ba1071aa374c6fc0754
Original-Change-Id: Ifd101f3e08698561d8516d83bc7d502d210e3b66
Original-Signed-off-by: YH Huang <yh.huang@mediatek.com>
Original-Signed-off-by: Yidi Lin <yidi.lin@mediatek.com>
Original-Reviewed-on: https://chromium-review.googlesource.com/292686
Original-Reviewed-by: Julius Werner <jwerner@chromium.org>
Reviewed-on: https://review.coreboot.org/13093
Tested-by: build bot (Jenkins)
Reviewed-by: Martin Roth <martinroth@google.com>
This commit is contained in:
YH Huang 2015-07-31 17:11:07 +08:00 committed by Patrick Georgi
parent 9733ba5bd0
commit 1fcee36ad7
1 changed files with 28 additions and 0 deletions
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28
src/mainboard/google/oak/mainboard.c
View File

@ -67,9 +67,37 @@ static void configure_audio(void)
mt_pll_set_aud_div(48 * KHz); mt_pll_set_aud_div(48 * KHz);
} }
/* Setup backlight control pins as output pin and power-off by default */
static void configure_backlight(void)
{
switch (board_id()) {
case 0:
gpio_output(PAD_DISP_PWM0, 0); /* DISP_PWM0 */
mt6391_gpio_output(MT6391_KP_ROW3, 0); /* PANEL_POWER_EN_6397 */
break;
case 1:
case 2:
gpio_output(PAD_DISP_PWM0, 0); /* DISP_PWM0 */
gpio_output(PAD_PCM_TX, 0); /* PANEL_POWER_EN */
break;
case 3:
gpio_output(PAD_UCTS2, 0); /* PANEL_LCD_POWER_EN */
gpio_output(PAD_DISP_PWM0, 0); /* DISP_PWM0 */
gpio_output(PAD_PCM_TX, 0); /* PANEL_POWER_EN */
break;
case 4:
default:
gpio_output(PAD_SRCLKENAI, 0); /* PANEL_LCD_POWER_EN */
gpio_output(PAD_DISP_PWM0, 0); /* DISP_PWM0 */
gpio_output(PAD_PCM_TX, 0); /* PANEL_POWER_EN */
break;
}
}
static void mainboard_init(device_t dev) static void mainboard_init(device_t dev)
{ {
configure_audio(); configure_audio();
configure_backlight();
} }
static void mainboard_enable(device_t dev) static void mainboard_enable(device_t dev)