[coreboot-gerrit] New patch to review for coreboot: google/oak: Configure backlight control pins

[Patrick Georgi (pgeorgi@google.com)]

Patrick Georgi (pgeorgi at google.com) just uploaded a new patch set to gerrit, which you can find at https://review.coreboot.org/13093

-gerrit

commit 60afc76c1dfea64a66a8470dfd9e0b2a7e2cadce
Author: YH Huang <yh.huang at mediatek.com>
Date:   Fri Jul 31 17:11:07 2015 +0800

    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 at chromium.org>
    Original-Commit-Id: e9628781801943903ba99ba1071aa374c6fc0754
    Original-Change-Id: Ifd101f3e08698561d8516d83bc7d502d210e3b66
    Original-Signed-off-by: YH Huang <yh.huang at mediatek.com>
    Original-Signed-off-by: Yidi Lin <yidi.lin at mediatek.com>
    Original-Reviewed-on: https://chromium-review.googlesource.com/292686
    Original-Reviewed-by: Julius Werner <jwerner at chromium.org>
---
 src/mainboard/google/oak/mainboard.c | 28 ++++++++++++++++++++++++++++
 1 file changed, 28 insertions(+)

diff --git a/src/mainboard/google/oak/mainboard.c b/src/mainboard/google/oak/mainboard.c
index 8dde2ef..614c965 100644
--- a/src/mainboard/google/oak/mainboard.c
+++ b/src/mainboard/google/oak/mainboard.c
@@ -67,9 +67,37 @@ static void configure_audio(void)
 	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)
 {
 	configure_audio();
+	configure_backlight();
 }
 
 static void mainboard_enable(device_t dev)