From: makarand.karvekar <makarand.karvekar@motorola.com>
Date: Tue, 11 Jan 2011 22:33:33 +0000 (-0600)
Subject: tegra: enable filters in backlight controller
X-Git-Tag: firefly_0821_release~9834^2~185
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=0285f571029e0ed6d81931bdb00666a1d0bfd88f;p=firefly-linux-kernel-4.4.55.git

tegra: enable filters in backlight controller

updated hysteresis and enabled slope, advanced slope
to smooth brightness transitions.

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 09f929c70f2f..af4635a8305e 100644
--- a/arch/arm/mach-tegra/board-stingray-panel.c
+++ b/arch/arm/mach-tegra/board-stingray-panel.c
@@ -385,22 +385,22 @@ struct lp8550_eeprom_data stingray_lp8550_eeprom_data[] = {
 	/* Set the backlight current to 19mA each step is .12mA */
 	{0xa1},
 	/* Boost freq 312khz, PWM controled w/constant current,
-	thermal deration disabled, no brightness slope */
-	{0x60},
-	/* Adaptive mode for light loads, No advanced slope, 50% mode selected,
+	thermal deration disabled, brightness slope 500mS */
+	{0x67},
+	/* Adaptive mode for light loads, advanced slope enabled, 50% mode selected,
 	Adaptive mode enabled, Boost is enabled, Boost Imax is 2.5A */
-	{0x9f},
+	{0xbf},
 	/* UVLO is disabled, phase shift PWM enabled, PWM Freq 19232 */
 	{0x3f},
 	/* LED current resistor disabled, LED Fault = 3.3V */
 	{0x08},
-	/* Vsync is enabled, Dither disabled, Boost voltage 20V */
-	{0x8a},
+	/* Vsync is enabled, Dither enabled, Boost voltage 20V */
+	{0xea},
 	/* PLL 13-bit counter */
 	{0x64},
-	/* 1-bit hysteresis w/11 bit resolution, PWM output freq is set with
+	/* 1-bit hysteresis w/10 bit resolution, PWM output freq is set with
 	PWM_FREQ EEPROM bits */
-	{0x29},
+	{0x2a},
 };
 
 struct lp8550_platform_data stingray_lp8550_backlight_data = {