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authorTony Lindgren <tony@atomide.com>2013-12-27 09:33:27 -0800
committerTony Lindgren <tony@atomide.com>2013-12-27 09:33:27 -0800
commit7e367c18c059c638bf6fb540f1decec18d64cb55 (patch)
tree40a7e909b86a6ddd087e4f33c03f3baf43d721f0
parent413541dd66d51f791a0b169d9b9014e4f56be13c (diff)
downloadlinux-7e367c18c059c638bf6fb540f1decec18d64cb55.tar.bz2
ARM: OMAP2+: Fix LCD panel backlight regression for LDP legacy booting
Looks like the LCD panel on LDP has been broken quite a while, and recently got fixed by commit 0b2aa8bed3e1 (gpio: twl4030: Fix regression for twl gpio output). However, there's still an issue left where the panel backlight does not come on if the LCD drivers are built into the kernel. Fix the issue by registering the DPI LCD panel only after the twl4030 GPIO has probed. Reported-by: Russell King <rmk+kernel@arm.linux.org.uk> Acked-by: Tomi Valkeinen <tomi.valkeinen@ti.com> [tony@atomide.com: updated per Tomi's comments] Signed-off-by: Tony Lindgren <tony@atomide.com>
-rw-r--r--arch/arm/mach-omap2/board-ldp.c7
1 files changed, 6 insertions, 1 deletions
diff --git a/arch/arm/mach-omap2/board-ldp.c b/arch/arm/mach-omap2/board-ldp.c
index 4ec8d82b0492..44a59c3abfb0 100644
--- a/arch/arm/mach-omap2/board-ldp.c
+++ b/arch/arm/mach-omap2/board-ldp.c
@@ -242,12 +242,18 @@ static void __init ldp_display_init(void)
static int ldp_twl_gpio_setup(struct device *dev, unsigned gpio, unsigned ngpio)
{
+ int res;
+
/* LCD enable GPIO */
ldp_lcd_pdata.enable_gpio = gpio + 7;
/* Backlight enable GPIO */
ldp_lcd_pdata.backlight_gpio = gpio + 15;
+ res = platform_device_register(&ldp_lcd_device);
+ if (res)
+ pr_err("Unable to register LCD: %d\n", res);
+
return 0;
}
@@ -346,7 +352,6 @@ static struct omap2_hsmmc_info mmc[] __initdata = {
static struct platform_device *ldp_devices[] __initdata = {
&ldp_gpio_keys_device,
- &ldp_lcd_device,
};
#ifdef CONFIG_OMAP_MUX