From: Tim Harvey <tharvey@gateworks.com>
To: Jean Delvare <jdelvare@suse.com>, Guenter Roeck <linux@roeck-us.net>
Cc: Robert Jones <rjones@gateworks.com>,
linux-hwmon@vger.kernel.org, linux-kernel@vger.kernel.org,
Tim Harvey <tharvey@gateworks.com>,
stable@vger.kernel.org
Subject: [PATCH] hwmon: gsc-hwmon: scale temperature to millidegrees
Date: Thu, 27 Aug 2020 10:20:24 -0700 [thread overview]
Message-ID: <1598548824-16898-1-git-send-email-tharvey@gateworks.com> (raw)
The GSC registers report temperature in decidegrees celcius so we
need to scale it to represent the hwmon sysfs API of millidegrees.
Cc: stable@vger.kernel.org
Signed-off-by: Tim Harvey <tharvey@gateworks.com>
---
drivers/hwmon/gsc-hwmon.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/hwmon/gsc-hwmon.c b/drivers/hwmon/gsc-hwmon.c
index 3dfe2ca..c6d4567 100644
--- a/drivers/hwmon/gsc-hwmon.c
+++ b/drivers/hwmon/gsc-hwmon.c
@@ -172,6 +172,7 @@ gsc_hwmon_read(struct device *dev, enum hwmon_sensor_types type, u32 attr,
case mode_temperature:
if (tmp > 0x8000)
tmp -= 0xffff;
+ tmp *= 100; /* convert to millidegrees celsius */
break;
case mode_voltage_raw:
tmp = clamp_val(tmp, 0, BIT(GSC_HWMON_RESOLUTION));
--
2.7.4
next reply other threads:[~2020-08-27 17:20 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-08-27 17:20 Tim Harvey [this message]
2020-08-27 19:48 ` [PATCH] hwmon: gsc-hwmon: scale temperature to millidegrees Guenter Roeck
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