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Diffstat (limited to 'drivers/thermal/int3403_thermal.c')
-rw-r--r--drivers/thermal/int3403_thermal.c296
1 files changed, 0 insertions, 296 deletions
diff --git a/drivers/thermal/int3403_thermal.c b/drivers/thermal/int3403_thermal.c
deleted file mode 100644
index 17554eeb3953..000000000000
--- a/drivers/thermal/int3403_thermal.c
+++ /dev/null
@@ -1,296 +0,0 @@
-/*
- * ACPI INT3403 thermal driver
- * Copyright (c) 2013, Intel Corporation.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms and conditions of the GNU General Public License,
- * version 2, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
- * more details.
- */
-
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/init.h>
-#include <linux/types.h>
-#include <linux/acpi.h>
-#include <linux/thermal.h>
-
-#define INT3403_TYPE_SENSOR 0x03
-#define INT3403_PERF_CHANGED_EVENT 0x80
-#define INT3403_THERMAL_EVENT 0x90
-
-#define DECI_KELVIN_TO_MILLI_CELSIUS(t, off) (((t) - (off)) * 100)
-#define KELVIN_OFFSET 2732
-#define MILLI_CELSIUS_TO_DECI_KELVIN(t, off) (((t) / 100) + (off))
-
-#define ACPI_INT3403_CLASS "int3403"
-#define ACPI_INT3403_FILE_STATE "state"
-
-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,
- unsigned long *temp)
-{
- struct acpi_device *device = tzone->devdata;
- unsigned long long tmp;
- acpi_status status;
-
- status = acpi_evaluate_integer(device->handle, "_TMP", NULL, &tmp);
- if (ACPI_FAILURE(status))
- return -EIO;
-
- *temp = DECI_KELVIN_TO_MILLI_CELSIUS(tmp, KELVIN_OFFSET);
-
- return 0;
-}
-
-static int sys_get_trip_hyst(struct thermal_zone_device *tzone,
- int trip, unsigned long *temp)
-{
- struct acpi_device *device = tzone->devdata;
- unsigned long long hyst;
- acpi_status status;
-
- status = acpi_evaluate_integer(device->handle, "GTSH", NULL, &hyst);
- if (ACPI_FAILURE(status))
- return -EIO;
-
- /*
- * Thermal hysteresis represents a temperature difference.
- * Kelvin and Celsius have same degree size. So the
- * conversion here between tenths of degree Kelvin unit
- * and Milli-Celsius unit is just to multiply 100.
- */
- *temp = hyst * 100;
-
- return 0;
-}
-
-static int sys_get_trip_temp(struct thermal_zone_device *tzone,
- int trip, unsigned long *temp)
-{
- 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;
-}
-
-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;
-}
-
-int sys_set_trip_temp(struct thermal_zone_device *tzone, int trip,
- unsigned long temp)
-{
- struct acpi_device *device = tzone->devdata;
- acpi_status status;
- char name[10];
- int ret = 0;
- struct int3403_sensor *obj = acpi_driver_data(device);
-
- snprintf(name, sizeof(name), "PAT%d", trip);
- if (acpi_has_method(device->handle, name)) {
- status = acpi_execute_simple_method(device->handle, name,
- MILLI_CELSIUS_TO_DECI_KELVIN(temp,
- KELVIN_OFFSET));
- if (ACPI_FAILURE(status))
- ret = -EIO;
- else
- obj->thresholds[trip] = temp;
- } else {
- ret = -EIO;
- dev_err(&device->dev, "sys_set_trip_temp: method not found\n");
- }
-
- return ret;
-}
-
-static struct thermal_zone_device_ops tzone_ops = {
- .get_temp = sys_get_curr_temp,
- .get_trip_temp = sys_get_trip_temp,
- .get_trip_type = sys_get_trip_type,
- .set_trip_temp = sys_set_trip_temp,
- .get_trip_hyst = sys_get_trip_hyst,
-};
-
-static void acpi_thermal_notify(struct acpi_device *device, u32 event)
-{
- struct int3403_sensor *obj;
-
- if (!device)
- return;
-
- obj = acpi_driver_data(device);
- if (!obj)
- return;
-
- switch (event) {
- case INT3403_PERF_CHANGED_EVENT:
- break;
- case INT3403_THERMAL_EVENT:
- thermal_zone_device_update(obj->tzone);
- break;
- default:
- dev_err(&device->dev, "Unsupported event [0x%x]\n", event);
- break;
- }
-}
-
-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;
- unsigned long long ptyp;
- acpi_status status;
- struct int3403_sensor *obj;
- unsigned long long trip_cnt;
- int trip_mask = 0;
-
- if (!device)
- return -EINVAL;
-
- status = acpi_evaluate_integer(device->handle, "PTYP", NULL, &ptyp);
- if (ACPI_FAILURE(status))
- return -EINVAL;
-
- if (ptyp != INT3403_TYPE_SENSOR)
- return -EINVAL;
-
- obj = devm_kzalloc(&device->dev, sizeof(*obj), GFP_KERNEL);
- if (!obj)
- return -ENOMEM;
-
- device->driver_data = obj;
-
- status = acpi_evaluate_integer(device->handle, "PATC", NULL,
- &trip_cnt);
- if (ACPI_FAILURE(status))
- trip_cnt = 0;
-
- if (trip_cnt) {
- /* We have to cache, thresholds can't be readback */
- obj->thresholds = devm_kzalloc(&device->dev,
- sizeof(*obj->thresholds) * trip_cnt,
- GFP_KERNEL);
- if (!obj->thresholds)
- 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);
- if (IS_ERR(obj->tzone)) {
- result = PTR_ERR(obj->tzone);
- return result;
- }
-
- strcpy(acpi_device_name(device), "INT3403");
- strcpy(acpi_device_class(device), ACPI_INT3403_CLASS);
-
- return 0;
-}
-
-static int acpi_int3403_remove(struct acpi_device *device)
-{
- struct int3403_sensor *obj;
-
- obj = acpi_driver_data(device);
- thermal_zone_device_unregister(obj->tzone);
-
- return 0;
-}
-
-ACPI_MODULE_NAME("int3403");
-static const struct acpi_device_id int3403_device_ids[] = {
- {"INT3403", 0},
- {"", 0},
-};
-MODULE_DEVICE_TABLE(acpi, int3403_device_ids);
-
-static struct acpi_driver acpi_int3403_driver = {
- .name = "INT3403",
- .class = ACPI_INT3403_CLASS,
- .ids = int3403_device_ids,
- .ops = {
- .add = acpi_int3403_add,
- .remove = acpi_int3403_remove,
- .notify = acpi_thermal_notify,
- },
-};
-
-module_acpi_driver(acpi_int3403_driver);
-
-MODULE_AUTHOR("Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>");
-MODULE_LICENSE("GPL v2");
-MODULE_DESCRIPTION("ACPI INT3403 thermal driver");
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-05 16:18:07 +0000