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| author | Hans de Goede <hdegoede@redhat.com> | 2015-02-16 17:26:41 +0100 |
|---|---|---|
| committer | Hans de Goede <hdegoede@redhat.com> | 2015-02-20 08:11:57 +0100 |
| commit | 242e3d893d1311ea38abd25613076a29961d422e (patch) | |
| tree | 6791d4ae57f678b0dafce3f3190ce332fe2f11b6 /drivers/video/sunxi_display.c | |
| parent | 1320112c8aa58345d71a5a46f3bf6a52589f1f2b (diff) | |
| download | u-boot-imx-242e3d893d1311ea38abd25613076a29961d422e.zip u-boot-imx-242e3d893d1311ea38abd25613076a29961d422e.tar.gz u-boot-imx-242e3d893d1311ea38abd25613076a29961d422e.tar.bz2 | |
sunxi: video: Add support for LCD reset pin
On some boards there is a gpio to reset the LCD panel, add support for this.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Ian Campbell <ijc@hellion.org.uk>
Diffstat (limited to 'drivers/video/sunxi_display.c')
| -rw-r--r-- | drivers/video/sunxi_display.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/drivers/video/sunxi_display.c b/drivers/video/sunxi_display.c index dbda97e..7f01401 100644 --- a/drivers/video/sunxi_display.c +++ b/drivers/video/sunxi_display.c @@ -592,7 +592,7 @@ static void sunxi_lcdc_enable(void) static void sunxi_lcdc_panel_enable(void) { - int pin; + int pin, reset_pin; /* * Start with backlight disabled to avoid the screen flashing to @@ -610,6 +610,12 @@ static void sunxi_lcdc_panel_enable(void) gpio_direction_output(pin, PWM_OFF); } + reset_pin = sunxi_name_to_gpio(CONFIG_VIDEO_LCD_RESET); + if (reset_pin != -1) { + gpio_request(reset_pin, "lcd_reset"); + gpio_direction_output(reset_pin, 0); /* Assert reset */ + } + /* Give the backlight some time to turn off and power up the panel. */ mdelay(40); pin = sunxi_name_to_gpio(CONFIG_VIDEO_LCD_POWER); @@ -617,6 +623,9 @@ static void sunxi_lcdc_panel_enable(void) gpio_request(pin, "lcd_power"); gpio_direction_output(pin, 1); } + + if (reset_pin != -1) + gpio_direction_output(reset_pin, 1); /* De-assert reset */ } static void sunxi_lcdc_backlight_enable(void) |