From: Praveen Bharathi <pbharathi@motorola.com>
Date: Wed, 24 Nov 2010 03:48:09 +0000 (-0600)
Subject: leds: als: improve ALS reporting accuracy
X-Git-Tag: firefly_0821_release~9834^2~306
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=88f695fd3145e224607a08ddd1debd7132bc0685;p=firefly-linux-kernel-4.4.55.git

leds: als: improve ALS reporting accuracy

Signed-off-by: Praveen Bharathi <pbharathi@motorola.com>
---

diff --git a/drivers/misc/max9635.c b/drivers/misc/max9635.c
index 6a7d1756c9d7..5faae259e5d2 100644
--- a/drivers/misc/max9635.c
+++ b/drivers/misc/max9635.c
@@ -235,12 +235,7 @@ static int max9635_read_adj_als(struct max9635_data *als_data)
 		pr_info("exp = 0x%X, mant = 0x%X, lux = %d\n",
 			exponent, mantissa, lux);
 
-	/* TODO: temporary lens coefficient adjustment, final
-		 calculation pending on shipping lens profile. */
-	if (lux < 200)
-		lux = lux * als_data->als_pdata->lens_coeff_l;
-	else
-		lux = lux * als_data->als_pdata->lens_coeff_h;
+	lux = lux * (exponent + als_data->als_pdata->lens_coeff);
 
 	if (max9635_debug & 1)
 		pr_info("%s:Reporting LUX %d\n", __func__, lux);
diff --git a/include/linux/max9635.h b/include/linux/max9635.h
index aef416691dbe..b91764910f0e 100644
--- a/include/linux/max9635.h
+++ b/include/linux/max9635.h
@@ -28,8 +28,7 @@ struct max9635_platform_data {
 	u8 threshold_timer;
 	u8 def_low_threshold;
 	u8 def_high_threshold;
-	u8 lens_coeff_l;
-	u8 lens_coeff_h;
+	u8 lens_coeff;
 };
 
 #endif	/* __KERNEL__ */