dalmore: E1627 calibrated backlight

Do backlight calibration to ensure that backlight
response curve is linear.

Bug 1027945

Signed-off-by: Mitch Luban <mluban@nvidia.com>
Reviewed-on: http://git-master/r/140763
(cherry picked from commit 9b762e774f44f3e47b5387cb7e58f3774a668fc3)

Change-Id: Id771d519d6568e9267663a8f6a00c9ef760ed0fe
Signed-off-by: Deepak Nibade <dnibade@nvidia.com>
Reviewed-on: http://git-master/r/146838
Reviewed-by: Automatic_Commit_Validation_User
Reviewed-by: Bharat Nihalani <bnihalani@nvidia.com>

1 files changed, 112 insertions, 2 deletions

diff --git a/arch/arm/mach-tegra/board-dalmore-panel.c b/arch/arm/mach-tegra/board-dalmore-panel.c
index bfefa25d7b30..a165dfe45b0c 100644
--- a/arch/arm/mach-tegra/board-dalmore-panel.c
+++ b/arch/arm/mach-tegra/board-dalmore-panel.c
@@ -155,6 +155,117 @@ static struct resource dalmore_disp2_resources[] = {
 	},
 };
 
+#if PANEL_10_1_PANASONIC_1920_1200
+static tegra_dc_bl_output dalmore_bl_output_measured = {
+	0, 0, 1, 2, 3, 4, 5, 6,
+	7, 8, 9, 9, 10, 11, 12, 13,
+	13, 14, 15, 16, 17, 17, 18, 19,
+	20, 21, 22, 22, 23, 24, 25, 26,
+	27, 27, 28, 29, 30, 31, 32, 32,
+	33, 34, 35, 36, 37, 37, 38, 39,
+	40, 41, 42, 42, 43, 44, 45, 46,
+	47, 48, 48, 49, 50, 51, 52, 53,
+	54, 55, 56, 57, 57, 58, 59, 60,
+	61, 62, 63, 64, 65, 66, 67, 68,
+	69, 70, 71, 71, 72, 73, 74, 75,
+	76, 77, 77, 78, 79, 80, 81, 82,
+	83, 84, 85, 87, 88, 89, 90, 91,
+	92, 93, 94, 95, 96, 97, 98, 99,
+	100, 101, 102, 103, 104, 105, 106, 107,
+	108, 109, 110, 111, 112, 113, 115, 116,
+	117, 118, 119, 120, 121, 122, 123, 124,
+	125, 126, 127, 128, 129, 130, 131, 132,
+	133, 134, 135, 136, 137, 138, 139, 141,
+	142, 143, 144, 146, 147, 148, 149, 151,
+	152, 153, 154, 155, 156, 157, 158, 158,
+	159, 160, 161, 162, 163, 165, 166, 167,
+	168, 169, 170, 171, 172, 173, 174, 176,
+	177, 178, 179, 180, 182, 183, 184, 185,
+	186, 187, 188, 189, 190, 191, 192, 194,
+	195, 196, 197, 198, 199, 200, 201, 202,
+	203, 204, 205, 206, 207, 208, 209, 210,
+	211, 212, 213, 214, 215, 216, 217, 219,
+	220, 221, 222, 224, 225, 226, 227, 229,
+	230, 231, 232, 233, 234, 235, 236, 238,
+	239, 240, 241, 242, 243, 244, 245, 246,
+	247, 248, 249, 250, 251, 252, 253, 255
+};
+#elif PANEL_11_6_AUO_1920_1080
+/* TODO: Calibrate for AUO panel */
+static tegra_dc_bl_output dalmore_bl_output_measured = {
+	0, 0, 1, 2, 3, 4, 5, 6,
+	7, 8, 9, 9, 10, 11, 12, 13,
+	13, 14, 15, 16, 17, 17, 18, 19,
+	20, 21, 22, 22, 23, 24, 25, 26,
+	27, 27, 28, 29, 30, 31, 32, 32,
+	33, 34, 35, 36, 37, 37, 38, 39,
+	40, 41, 42, 42, 43, 44, 45, 46,
+	47, 48, 48, 49, 50, 51, 52, 53,
+	54, 55, 56, 57, 57, 58, 59, 60,
+	61, 62, 63, 64, 65, 66, 67, 68,
+	69, 70, 71, 71, 72, 73, 74, 75,
+	76, 77, 77, 78, 79, 80, 81, 82,
+	83, 84, 85, 87, 88, 89, 90, 91,
+	92, 93, 94, 95, 96, 97, 98, 99,
+	100, 101, 102, 103, 104, 105, 106, 107,
+	108, 109, 110, 111, 112, 113, 115, 116,
+	117, 118, 119, 120, 121, 122, 123, 124,
+	125, 126, 127, 128, 129, 130, 131, 132,
+	133, 134, 135, 136, 137, 138, 139, 141,
+	142, 143, 144, 146, 147, 148, 149, 151,
+	152, 153, 154, 155, 156, 157, 158, 158,
+	159, 160, 161, 162, 163, 165, 166, 167,
+	168, 169, 170, 171, 172, 173, 174, 176,
+	177, 178, 179, 180, 182, 183, 184, 185,
+	186, 187, 188, 189, 190, 191, 192, 194,
+	195, 196, 197, 198, 199, 200, 201, 202,
+	203, 204, 205, 206, 207, 208, 209, 210,
+	211, 212, 213, 214, 215, 216, 217, 219,
+	220, 221, 222, 224, 225, 226, 227, 229,
+	230, 231, 232, 233, 234, 235, 236, 238,
+	239, 240, 241, 242, 243, 244, 245, 246,
+	247, 248, 249, 250, 251, 252, 253, 255
+};
+#elif PANEL_10_1_SHARP_2560_1600
+/* TODO: Calibrate for SHARP panel */
+static tegra_dc_bl_output dalmore_bl_output_measured = {
+	0, 0, 1, 2, 3, 4, 5, 6,
+	7, 8, 9, 9, 10, 11, 12, 13,
+	13, 14, 15, 16, 17, 17, 18, 19,
+	20, 21, 22, 22, 23, 24, 25, 26,
+	27, 27, 28, 29, 30, 31, 32, 32,
+	33, 34, 35, 36, 37, 37, 38, 39,
+	40, 41, 42, 42, 43, 44, 45, 46,
+	47, 48, 48, 49, 50, 51, 52, 53,
+	54, 55, 56, 57, 57, 58, 59, 60,
+	61, 62, 63, 64, 65, 66, 67, 68,
+	69, 70, 71, 71, 72, 73, 74, 75,
+	76, 77, 77, 78, 79, 80, 81, 82,
+	83, 84, 85, 87, 88, 89, 90, 91,
+	92, 93, 94, 95, 96, 97, 98, 99,
+	100, 101, 102, 103, 104, 105, 106, 107,
+	108, 109, 110, 111, 112, 113, 115, 116,
+	117, 118, 119, 120, 121, 122, 123, 124,
+	125, 126, 127, 128, 129, 130, 131, 132,
+	133, 134, 135, 136, 137, 138, 139, 141,
+	142, 143, 144, 146, 147, 148, 149, 151,
+	152, 153, 154, 155, 156, 157, 158, 158,
+	159, 160, 161, 162, 163, 165, 166, 167,
+	168, 169, 170, 171, 172, 173, 174, 176,
+	177, 178, 179, 180, 182, 183, 184, 185,
+	186, 187, 188, 189, 190, 191, 192, 194,
+	195, 196, 197, 198, 199, 200, 201, 202,
+	203, 204, 205, 206, 207, 208, 209, 210,
+	211, 212, 213, 214, 215, 216, 217, 219,
+	220, 221, 222, 224, 225, 226, 227, 229,
+	230, 231, 232, 233, 234, 235, 236, 238,
+	239, 240, 241, 242, 243, 244, 245, 246,
+	247, 248, 249, 250, 251, 252, 253, 255
+};
+#endif
+
+static p_tegra_dc_bl_output bl_output = dalmore_bl_output_measured;
+
 static struct tegra_dsi_cmd dsi_init_cmd[] = {
 #if PANEL_10_1_PANASONIC_1920_1200
 	/* no init command required */
@@ -664,8 +775,7 @@ static int dalmore_disp1_bl_notify(struct device *unused, int brightness)
 	if (brightness > 255)
 		pr_info("Error: Brightness > 255!\n");
 	else
-		/* TODO: backlight response LUT */
-		brightness = brightness;
+		brightness = bl_output[brightness];
 
 	return brightness;
 }