From 82a17e75da0d812c2e583e733efd1e67e7488933 Mon Sep 17 00:00:00 2001
From: Tim Harvey <tharvey@gateworks.com>
Date: Tue, 24 May 2016 11:03:51 -0700
Subject: [PATCH] imx: ventana: gsc: fix negative temperature readings
The GSC Temperature sensor is a 2's complement value - adjust accordingly
for negative temperatures.
Signed-off-by: Tim Harvey <tharvey@gateworks.com>
---
board/gateworks/gw_ventana/gsc.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/board/gateworks/gw_ventana/gsc.c b/board/gateworks/gw_ventana/gsc.c
index 2555824259..c626ba25e7 100644
--- a/board/gateworks/gw_ventana/gsc.c
+++ b/board/gateworks/gw_ventana/gsc.c
@@ -71,6 +71,8 @@ static void read_hwmon(const char *name, uint reg, uint size)
puts("fRD\n");
} else {
ui = buf[0] | (buf[1]<<8) | (buf[2]<<16);
+ if (reg == GSC_HWMON_TEMP && ui > 0x8000)
+ ui -= 0xffff;
if (ui == 0xffffff)
puts("invalid\n");
else
--
2.39.5