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Thermal/int340x: LPAT conversion for temperature 

When LPAT table is present, we need to convert raw temperature to
real temp using LPAT.

Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
This commit is contained in:
Srinivas Pandruvada 2015-01-28 11:56:48 -08:00 committed by Zhang Rui
parent ac586e2d6a
commit 317d9dda05
2 changed files with 20 additions and 3 deletions
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20
drivers/thermal/int340x_thermal/int340x_thermal_zone.c
View File

@ -33,8 +33,17 @@ static int int340x_thermal_get_zone_temp(struct thermal_zone_device *zone,
if (ACPI_FAILURE(status))
return -EIO;
/* _TMP returns the temperature in tenths of degrees Kelvin */
*temp = DECI_KELVIN_TO_MILLICELSIUS(tmp);
if (d->lpat_table) {
int conv_temp;
conv_temp = acpi_lpat_raw_to_temp(d->lpat_table, (int)tmp);
if (conv_temp < 0)
return conv_temp;
*temp = (unsigned long)conv_temp * 10;
} else
/* _TMP returns the temperature in tenths of degrees Kelvin */
*temp = DECI_KELVIN_TO_MILLICELSIUS(tmp);
return 0;
}
@ -227,6 +236,8 @@ struct int34x_thermal_zone *int340x_thermal_zone_add(struct acpi_device *adev,
int34x_thermal_zone->act_trips[i].id = trip_cnt++;
int34x_thermal_zone->act_trips[i].valid = true;
}
int34x_thermal_zone->lpat_table = acpi_lpat_get_conversion_table(
adev->handle);
int34x_thermal_zone->zone = thermal_zone_device_register(
acpi_device_bid(adev),
@ -237,11 +248,13 @@ struct int34x_thermal_zone *int340x_thermal_zone_add(struct acpi_device *adev,
0, 0);
if (IS_ERR(int34x_thermal_zone->zone)) {
ret = PTR_ERR(int34x_thermal_zone->zone);
goto free_mem;
goto free_lpat;
}
return int34x_thermal_zone;
free_lpat:
acpi_lpat_free_conversion_table(int34x_thermal_zone->lpat_table);
free_mem:
kfree(int34x_thermal_zone);
return ERR_PTR(ret);
@ -252,6 +265,7 @@ void int340x_thermal_zone_remove(struct int34x_thermal_zone
*int34x_thermal_zone)
{
thermal_zone_device_unregister(int34x_thermal_zone->zone);
acpi_lpat_free_conversion_table(int34x_thermal_zone->lpat_table);
kfree(int34x_thermal_zone);
}
EXPORT_SYMBOL_GPL(int340x_thermal_zone_remove);

3
drivers/thermal/int340x_thermal/int340x_thermal_zone.h
View File

@ -16,6 +16,8 @@
#ifndef __INT340X_THERMAL_ZONE_H__
#define __INT340X_THERMAL_ZONE_H__
#include <acpi/acpi_lpat.h>
#define INT340X_THERMAL_MAX_ACT_TRIP_COUNT 10
struct active_trip {
@ -38,6 +40,7 @@ struct int34x_thermal_zone {
struct thermal_zone_device *zone;
struct thermal_zone_device_ops *override_ops;
void *priv_data;
struct acpi_lpat_conversion_table *lpat_table;
};
struct int34x_thermal_zone *int340x_thermal_zone_add(struct acpi_device *,