diff options
| author | Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> | 2015-01-28 11:56:48 -0800 |
|---|---|---|
| committer | Zhang Rui <rui.zhang@intel.com> | 2015-01-29 21:02:12 +0800 |
| commit | 317d9dda0522c18eb230367c88601c2e46cda4f8 (patch) | |
| tree | 27fb5b40515e4ebf1e99f2f1b73270caaf39acfe /drivers/thermal | |
| parent | ac586e2d6afb1935246c75f0e27a5c628712dbfa (diff) | |
| download | talos-obmc-linux-317d9dda0522c18eb230367c88601c2e46cda4f8.tar.gz talos-obmc-linux-317d9dda0522c18eb230367c88601c2e46cda4f8.zip | |
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>
Diffstat (limited to 'drivers/thermal')
| -rw-r--r-- | drivers/thermal/int340x_thermal/int340x_thermal_zone.c | 20 | ||||
| -rw-r--r-- | drivers/thermal/int340x_thermal/int340x_thermal_zone.h | 3 |
2 files changed, 20 insertions, 3 deletions
diff --git a/drivers/thermal/int340x_thermal/int340x_thermal_zone.c b/drivers/thermal/int340x_thermal/int340x_thermal_zone.c index 162e545cc93a..f88b08877025 100644 --- a/drivers/thermal/int340x_thermal/int340x_thermal_zone.c +++ b/drivers/thermal/int340x_thermal/int340x_thermal_zone.c @@ -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); diff --git a/drivers/thermal/int340x_thermal/int340x_thermal_zone.h b/drivers/thermal/int340x_thermal/int340x_thermal_zone.h index 11f2f5260c3a..9f38ab72c4bf 100644 --- a/drivers/thermal/int340x_thermal/int340x_thermal_zone.h +++ b/drivers/thermal/int340x_thermal/int340x_thermal_zone.h @@ -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 *, |
