diff options
| author | Kan-Ru Chen <kanru@0xlab.org> | 2010-07-05 17:04:40 +0300 |
|---|---|---|
| committer | Tony Lindgren <tony@atomide.com> | 2010-07-05 17:04:40 +0300 |
| commit | 4098609898e9ae69ebdd3fdaed1117234104d820 (patch) | |
| tree | 4f1dc86c60045e0889f3e41bcf54a5e678e99d8f /arch | |
| parent | 31c73f74f3e2d3b842f1dcb3bbcfc4b53b62f797 (diff) | |
| download | linux-4098609898e9ae69ebdd3fdaed1117234104d820.tar.gz | |
OMAP2: Devkit8000: Setup LCD reset
This patch corrects the LCD reset pin configuration.
Original code from early devkit8000 patch sets the TWL4030 GPIO_1
to EHCI_nOC and TWL4030_GPIO_MAX+1 to ledA. Indeed these two pins
are both LCD_PWREN. Setup the lcd reset_gpio properly so it can be
disabled when other display is turned on.
Signed-off-by: Kan-Ru Chen <kanru@0xlab.org>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/mach-omap2/board-devkit8000.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/arch/arm/mach-omap2/board-devkit8000.c b/arch/arm/mach-omap2/board-devkit8000.c index 03cb97e3319b..a86d00105d59 100644 --- a/arch/arm/mach-omap2/board-devkit8000.c +++ b/arch/arm/mach-omap2/board-devkit8000.c @@ -134,11 +134,15 @@ static int devkit8000_panel_enable_lcd(struct omap_dss_device *dssdev) twl_i2c_write_u8(TWL4030_MODULE_GPIO, 0x80, REG_GPIODATADIR1); twl_i2c_write_u8(TWL4030_MODULE_LED, 0x0, 0x0); + if (dssdev->reset_gpio != -EINVAL) + gpio_set_value(dssdev->reset_gpio, 1); return 0; } static void devkit8000_panel_disable_lcd(struct omap_dss_device *dssdev) { + if (dssdev->reset_gpio != -EINVAL) + gpio_set_value(dssdev->reset_gpio, 0); } static int devkit8000_panel_enable_dvi(struct omap_dss_device *dssdev) @@ -183,6 +187,7 @@ static struct omap_dss_device devkit8000_lcd_device = { .driver_name = "generic_panel", .type = OMAP_DISPLAY_TYPE_DPI, .phy.dpi.data_lines = 24, + .reset_gpio = -EINVAL, /* will be replaced */ .platform_enable = devkit8000_panel_enable_lcd, .platform_disable = devkit8000_panel_disable_lcd, }; @@ -281,6 +286,12 @@ static int devkit8000_twl_gpio_setup(struct device *dev, /* TWL4030_GPIO_MAX + 1 == ledB, PMU_STAT (out, active low LED) */ gpio_leds[2].gpio = gpio + TWL4030_GPIO_MAX + 1; + /* gpio + 1 is "LCD_PWREN" (out, active high) */ + devkit8000_lcd_device.reset_gpio = gpio + 1; + gpio_request(devkit8000_lcd_device.reset_gpio, "LCD_PWREN"); + /* Disable until needed */ + gpio_direction_output(devkit8000_lcd_device.reset_gpio, 0); + /* gpio + 7 is "DVI_PD" (out, active low) */ devkit8000_dvi_device.reset_gpio = gpio + 7; gpio_request(devkit8000_dvi_device.reset_gpio, "DVI PowerDown"); |