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Commit 5fcdeb20 authored by Srinivas Pandruvada's avatar Srinivas Pandruvada Committed by Zhang Rui
Browse files

Thermal: int3403: Add CRT and PSV trip 



The ACPI object definition can contain passive and critical
trip temperature. Export them via thermal sysfs.

Signed-off-by: default avatarSrinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: default avatarZhang Rui <rui.zhang@intel.com>
parent a497c3ba

drivers/thermal/int3403_thermal.c

+60 −7
Original line number Diff line number Diff line
@@ -33,6 +33,10 @@ 
struct int3403_sensor {

	struct thermal_zone_device *tzone;

	unsigned long *thresholds;

	unsigned long	crit_temp;

	int		crit_trip_id;

	unsigned long	psv_temp;

	int		psv_trip_id;

};



static int sys_get_curr_temp(struct thermal_zone_device *tzone,
@@ -79,12 +83,18 @@ static int sys_get_trip_temp(struct thermal_zone_device *tzone, 
	struct acpi_device *device = tzone->devdata;

	struct int3403_sensor *obj = acpi_driver_data(device);



	if (trip == obj->crit_trip_id)

		*temp = obj->crit_temp;

	else if (trip == obj->psv_trip_id)

		*temp = obj->psv_temp;

	else {

		/*

		 * get_trip_temp is a mandatory callback but

		 * PATx method doesn't return any value, so return

		 * cached value, which was last set from user space.

		 */

		*temp = obj->thresholds[trip];

	}



	return 0;

}
@@ -92,7 +102,13 @@ static int sys_get_trip_temp(struct thermal_zone_device *tzone, 
static int sys_get_trip_type(struct thermal_zone_device *thermal,

		int trip, enum thermal_trip_type *type)

{

	struct acpi_device *device = thermal->devdata;

	struct int3403_sensor *obj = acpi_driver_data(device);



	/* Mandatory callback, may not mean much here */

	if (trip == obj->crit_trip_id)

		*type = THERMAL_TRIP_CRITICAL;

	else

		*type = THERMAL_TRIP_PASSIVE;



	return 0;
@@ -155,6 +171,34 @@ static void acpi_thermal_notify(struct acpi_device *device, u32 event) 
	}

}



static int sys_get_trip_crt(struct acpi_device *device, unsigned long *temp)

{

	unsigned long long crt;

	acpi_status status;



	status = acpi_evaluate_integer(device->handle, "_CRT", NULL, &crt);

	if (ACPI_FAILURE(status))

		return -EIO;



	*temp = DECI_KELVIN_TO_MILLI_CELSIUS(crt, KELVIN_OFFSET);



	return 0;

}



static int sys_get_trip_psv(struct acpi_device *device, unsigned long *temp)

{

	unsigned long long psv;

	acpi_status status;



	status = acpi_evaluate_integer(device->handle, "_PSV", NULL, &psv);

	if (ACPI_FAILURE(status))

		return -EIO;



	*temp = DECI_KELVIN_TO_MILLI_CELSIUS(psv, KELVIN_OFFSET);



	return 0;

}



static int acpi_int3403_add(struct acpi_device *device)

{

	int result = 0;
@@ -194,6 +238,15 @@ static int acpi_int3403_add(struct acpi_device *device) 
			return -ENOMEM;

		trip_mask = BIT(trip_cnt) - 1;

	}



	obj->psv_trip_id = -1;

	if (!sys_get_trip_psv(device, &obj->psv_temp))

		obj->psv_trip_id = trip_cnt++;



	obj->crit_trip_id = -1;

	if (!sys_get_trip_crt(device, &obj->crit_temp))

		obj->crit_trip_id = trip_cnt++;



	obj->tzone = thermal_zone_device_register(acpi_device_bid(device),

				trip_cnt, trip_mask, device, &tzone_ops,

				NULL, 0, 0);