Commit 40986098 authored by Kan-Ru Chen's avatar Kan-Ru Chen Committed by Tony Lindgren
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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: default avatarKan-Ru Chen <kanru@0xlab.org>
Signed-off-by: default avatarTony Lindgren <tony@atomide.com>
parent 31c73f74

arch/arm/mach-omap2/board-devkit8000.c

+11 −0
Original line number Diff line number Diff line
@@ -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");

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