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staging: ti-soc-thermal: Add get_trend support

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Patch adds get_trend functionality for OMAP Bandgap thermal devices.

Signed-off-by: J Keerthy <j-keerthy@ti.com>
Signed-off-by: Eduardo Valentin <eduardo.valentin@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
J Keerthy 2013-04-01 12:04:46 -04:00 committed by Greg Kroah-Hartman
parent 2f440b0622
commit 03b7f67bd1
1 changed files with 26 additions and 1 deletions
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27
drivers/staging/ti-soc-thermal/ti-thermal-common.c
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@ -215,6 +215,31 @@ static int ti_thermal_get_trip_temp(struct thermal_zone_device *thermal,
return 0;
}
/* Get the temperature trend callback functions for thermal zone */
static int ti_thermal_get_trend(struct thermal_zone_device *thermal,
int trip, enum thermal_trend *trend)
{
struct ti_thermal_data *data = thermal->devdata;
struct ti_bandgap *bgp;
int id, tr, ret = 0;
bgp = data->bgp;
id = data->sensor_id;
ret = ti_bandgap_get_trend(bgp, id, &tr);
if (ret)
return ret;
if (tr > 0)
*trend = THERMAL_TREND_RAISING;
else if (tr < 0)
*trend = THERMAL_TREND_DROPPING;
else
*trend = THERMAL_TREND_STABLE;
return 0;
}
/* Get critical temperature callback functions for thermal zone */
static int ti_thermal_get_crit_temp(struct thermal_zone_device *thermal,
unsigned long *temp)
@ -225,7 +250,7 @@ static int ti_thermal_get_crit_temp(struct thermal_zone_device *thermal,
static struct thermal_zone_device_ops ti_thermal_ops = {
.get_temp = ti_thermal_get_temp,
/* TODO: add .get_trend */
.get_trend = ti_thermal_get_trend,
.bind = ti_thermal_bind,
.unbind = ti_thermal_unbind,
.get_mode = ti_thermal_get_mode,