From: Huan Biao <huan.biao@amlogic.com>
Date: Fri, 5 Jul 2019 05:43:23 +0000 (+0800)
Subject: thermal: update read sensor times for performance [1/1]
X-Git-Tag: hardkernel-4.9.236-104~973
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=135498c51c0a40b65520f48f522888ddcbdfe37f;p=platform%2Fkernel%2Flinux-amlogic.git

thermal: update read sensor times for performance [1/1]

PD#SWPL-10836

Problem:
read sensor time too long

Solution:
read sensor once

Verify:
verified on t1 t962x2 x301

Change-Id: Iddf4c903ba8a3836666943adb5c02c5d287728df
Signed-off-by: Huan Biao <huan.biao@amlogic.com>
---

diff --git a/drivers/amlogic/thermal/meson_tsensor.c b/drivers/amlogic/thermal/meson_tsensor.c
index 1869983..a9e71ba 100644
--- a/drivers/amlogic/thermal/meson_tsensor.c
+++ b/drivers/amlogic/thermal/meson_tsensor.c
@@ -53,7 +53,7 @@
 #define R1P1_TS_STAT8		(0x18 * 4)
 #define R1P1_TS_STAT9		(0x19 * 4)
 
-#define R1P1_TS_VALUE_CONT	0x10
+#define R1P1_TS_VALUE_CONT	0x1
 #define	R1P1_TRIM_INFO		0x0
 #define R1P1_TS_TEMP_MASK	0xfff
 #define R1P1_TS_IRQ_MASK	0xff
@@ -447,7 +447,14 @@ static int r1p1_tsensor_read(struct meson_tsensor_data *data)
 			value_all += (tvalue & 0xffff);
 		}
 	}
-	tvalue = value_all / cnt;
+	if (cnt) {
+		tvalue = value_all / cnt;
+		pr_debug("%s  vall: %u, cnt: %u\n",
+				__func__, value_all, cnt);
+	} else {
+		pr_info("%s  valid cnt is 0\n", __func__);
+		tvalue = 0;
+	}
 	return tvalue;
 }