From: makarand.karvekar <makarand.karvekar@motorola.com>
Date: Fri, 4 Mar 2011 16:01:37 +0000 (-0600)
Subject: leds: lp8550: get backlight scaling factor from platform data
X-Git-Tag: firefly_0821_release~9834^2~63
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=cbdfcbc03fed16519309d5ab5d4e4b73b7ecb4ff;p=firefly-linux-kernel-4.4.55.git

leds: lp8550: get backlight scaling factor from platform data

backlight scaling factor varies with display panel

Change-Id: I45ea0d76526d4297412d177481acded082ce7104
Signed-off-by: makarand.karvekar <makarand.karvekar@motorola.com>
---

diff --git a/drivers/leds/leds-lp8550.c b/drivers/leds/leds-lp8550.c
index 2f4e4f380941..9504ea8785bd 100755
--- a/drivers/leds/leds-lp8550.c
+++ b/drivers/leds/leds-lp8550.c
@@ -257,9 +257,9 @@ static void lp8550_brightness_write(struct lp8550_data *led_data)
 
 		if (led_data->led_pdata->dev_ctrl_config ==
 			 LP8550_BRT_MODE_PWM) {
-			//scale the brightness to prevent more than 19mA per LED
+			/* scale the brightness to prevent more than 19mA per LED */
 			if (lp8550_write_reg(led_data, LP8550_EEPROM_A0,
-				 (brightness * 625) / 1000))
+				 (brightness * led_data->led_pdata->scaling_factor) / 1000))
 				pr_err("%s:Failed to set brightness:%d\n",
 				__func__, error);
 		}
diff --git a/include/linux/leds-lp8550.h b/include/linux/leds-lp8550.h
index adfcb02a3230..1585d7b066ec 100755
--- a/include/linux/leds-lp8550.h
+++ b/include/linux/leds-lp8550.h
@@ -36,6 +36,7 @@ struct lp8550_platform_data {
 	u8 direct_ctrl;
 	struct lp8550_eeprom_data *eeprom_table;
 	int eeprom_tbl_sz;
+	int scaling_factor;
 };
 
 #endif	/* __KERNEL__ */