From: makarand.karvekar <makarand.karvekar@motorola.com>
Date: Fri, 4 Mar 2011 16:10:13 +0000 (-0600)
Subject: [ARM]: tegra: stingray: set backlight scaling factor
X-Git-Tag: firefly_0821_release~9834^2~62
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=3e8bebdeaa75b60a5babff81f4bb673c7c995f04;p=firefly-linux-kernel-4.4.55.git

[ARM]: tegra: stingray: set backlight scaling factor

set backlight scaling factor based on display panel.
AUO scaling at 726 makes it bit more brighter

Change-Id: I568ff158f00260894d95c00ac1e96632e2636d58
Signed-off-by: makarand.karvekar <makarand.karvekar@motorola.com>
---

diff --git a/arch/arm/mach-tegra/board-stingray-panel.c b/arch/arm/mach-tegra/board-stingray-panel.c
index 915cb8fa7877..4720129691f2 100644
--- a/arch/arm/mach-tegra/board-stingray-panel.c
+++ b/arch/arm/mach-tegra/board-stingray-panel.c
@@ -451,8 +451,19 @@ struct lp8550_platform_data stingray_lp8550_backlight_data = {
 	.direct_ctrl = 0x01,
 	.eeprom_table = stingray_lp8550_eeprom_data,
 	.eeprom_tbl_sz = ARRAY_SIZE(stingray_lp8550_eeprom_data),
+	.scaling_factor = 690, /* For SHP and default */
 };
 
+static int stingray_lp8550_init(void)
+{
+	struct lp8550_platform_data *pdata =
+			 &stingray_lp8550_backlight_data;
+	if (!strncmp(lcd_manfid, "AUO", 3))
+		pdata->scaling_factor = 726;
+
+	return 0;
+}
+
 static struct i2c_board_info __initdata stingray_i2c_bus1_led_info[] = {
 	 {
 		I2C_BOARD_INFO(LD_LP8550_NAME, 0x2c),
@@ -506,6 +517,7 @@ int __init stingray_panel_init(void)
 	platform_device_register(&stingray_panel_early_reg_keyreset_device);
 
 	stingray_hdmi_init();
+	stingray_lp8550_init();
 
 	stingray_csi_reg = regulator_get(NULL, "vcsi");
 	if (IS_ERR(stingray_csi_reg)) {