diff options
| author | Bai Ping <b51503@freescale.com> | 2015-09-08 01:58:22 +0800 |
|---|---|---|
| committer | Jason Liu <jason.hui.liu@nxp.com> | 2019-02-12 10:23:09 +0800 |
| commit | 4361432e11599749da5d82ca7a9aeef9e9805067 (patch) | |
| tree | 5a1aaecc469f7f35fef19ce1f4de514cb5a65e5e /drivers/thermal | |
| parent | 7ea96f96b09b88a116cefcf9e3bb52fb46fad91b (diff) | |
MLK-11518-02 thermal: imx: add .get_trend callback fn in thermal driver
add .get_trend callback to determine the thermal raise/fall trend,
when the temp great than a threshold, drop to the lowest trend
(THERMAL_TREND_DROP_FULL).
Signed-off-by: Bai Ping <b51503@freescale.com>
Diffstat (limited to 'drivers/thermal')
| -rw-r--r-- | drivers/thermal/imx_thermal.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/drivers/thermal/imx_thermal.c b/drivers/thermal/imx_thermal.c index 3a733310e6e1..c83b7776c63b 100644 --- a/drivers/thermal/imx_thermal.c +++ b/drivers/thermal/imx_thermal.c @@ -91,6 +91,8 @@ enum imx_thermal_trip { IMX_TRIP_NUM, }; +#define IMX_TEMP_PASSIVE_COOL_DELTA 10000 + #define IMX_POLLING_DELAY 2000 /* millisecond */ #define IMX_PASSIVE_DELAY 1000 @@ -494,6 +496,23 @@ static int imx_unbind(struct thermal_zone_device *tz, return 0; } +static int imx_get_trend(struct thermal_zone_device *tz, + int trip, enum thermal_trend *trend) +{ + int ret; + int trip_temp; + + ret = imx_get_trip_temp(tz, trip, &trip_temp); + if (ret < 0) + return ret; + + if (tz->temperature >= (trip_temp - IMX_TEMP_PASSIVE_COOL_DELTA)) + *trend = THERMAL_TREND_RAISE_FULL; + else + *trend = THERMAL_TREND_DROP_FULL; + + return 0; +} static struct thermal_zone_device_ops imx_tz_ops = { .bind = imx_bind, .unbind = imx_unbind, @@ -504,6 +523,7 @@ static struct thermal_zone_device_ops imx_tz_ops = { .get_trip_temp = imx_get_trip_temp, .get_crit_temp = imx_get_crit_temp, .set_trip_temp = imx_set_trip_temp, + .get_trend = imx_get_trend, }; static inline void imx6_calibrate_data(struct imx_thermal_data *data, u32 val) |