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path: root/drivers/thermal/int340x_thermal/int3400_thermal.c
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Diffstat (limited to 'drivers/thermal/int340x_thermal/int3400_thermal.c')
-rw-r--r--drivers/thermal/int340x_thermal/int3400_thermal.c340
1 files changed, 0 insertions, 340 deletions
diff --git a/drivers/thermal/int340x_thermal/int3400_thermal.c b/drivers/thermal/int340x_thermal/int3400_thermal.c
deleted file mode 100644
index a9ec94ed7a42..000000000000
--- a/drivers/thermal/int340x_thermal/int3400_thermal.c
+++ /dev/null
@@ -1,340 +0,0 @@
-/*
- * INT3400 thermal driver
- *
- * Copyright (C) 2014, Intel Corporation
- * Authors: Zhang Rui <rui.zhang@intel.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- */
-
-#include <linux/module.h>
-#include <linux/platform_device.h>
-#include <linux/acpi.h>
-#include <linux/thermal.h>
-#include "acpi_thermal_rel.h"
-
-enum int3400_thermal_uuid {
- INT3400_THERMAL_PASSIVE_1,
- INT3400_THERMAL_ACTIVE,
- INT3400_THERMAL_CRITICAL,
- INT3400_THERMAL_MAXIMUM_UUID,
-};
-
-static char *int3400_thermal_uuids[INT3400_THERMAL_MAXIMUM_UUID] = {
- "42A441D6-AE6A-462b-A84B-4A8CE79027D3",
- "3A95C389-E4B8-4629-A526-C52C88626BAE",
- "97C68AE7-15FA-499c-B8C9-5DA81D606E0A",
-};
-
-struct int3400_thermal_priv {
- struct acpi_device *adev;
- struct thermal_zone_device *thermal;
- int mode;
- int art_count;
- struct art *arts;
- int trt_count;
- struct trt *trts;
- u8 uuid_bitmap;
- int rel_misc_dev_res;
- int current_uuid_index;
-};
-
-static ssize_t available_uuids_show(struct device *dev,
- struct device_attribute *attr,
- char *buf)
-{
- struct platform_device *pdev = to_platform_device(dev);
- struct int3400_thermal_priv *priv = platform_get_drvdata(pdev);
- int i;
- int length = 0;
-
- for (i = 0; i < INT3400_THERMAL_MAXIMUM_UUID; i++) {
- if (priv->uuid_bitmap & (1 << i))
- if (PAGE_SIZE - length > 0)
- length += snprintf(&buf[length],
- PAGE_SIZE - length,
- "%s\n",
- int3400_thermal_uuids[i]);
- }
-
- return length;
-}
-
-static ssize_t current_uuid_show(struct device *dev,
- struct device_attribute *devattr, char *buf)
-{
- struct platform_device *pdev = to_platform_device(dev);
- struct int3400_thermal_priv *priv = platform_get_drvdata(pdev);
-
- if (priv->uuid_bitmap & (1 << priv->current_uuid_index))
- return sprintf(buf, "%s\n",
- int3400_thermal_uuids[priv->current_uuid_index]);
- else
- return sprintf(buf, "INVALID\n");
-}
-
-static ssize_t current_uuid_store(struct device *dev,
- struct device_attribute *attr,
- const char *buf, size_t count)
-{
- struct platform_device *pdev = to_platform_device(dev);
- struct int3400_thermal_priv *priv = platform_get_drvdata(pdev);
- int i;
-
- for (i = 0; i < INT3400_THERMAL_MAXIMUM_UUID; ++i) {
- if ((priv->uuid_bitmap & (1 << i)) &&
- !(strncmp(buf, int3400_thermal_uuids[i],
- sizeof(int3400_thermal_uuids[i]) - 1))) {
- priv->current_uuid_index = i;
- return count;
- }
- }
-
- return -EINVAL;
-}
-
-static DEVICE_ATTR_RW(current_uuid);
-static DEVICE_ATTR_RO(available_uuids);
-static struct attribute *uuid_attrs[] = {
- &dev_attr_available_uuids.attr,
- &dev_attr_current_uuid.attr,
- NULL
-};
-
-static struct attribute_group uuid_attribute_group = {
- .attrs = uuid_attrs,
- .name = "uuids"
-};
-
-static int int3400_thermal_get_uuids(struct int3400_thermal_priv *priv)
-{
- struct acpi_buffer buf = { ACPI_ALLOCATE_BUFFER, NULL};
- union acpi_object *obja, *objb;
- int i, j;
- int result = 0;
- acpi_status status;
-
- status = acpi_evaluate_object(priv->adev->handle, "IDSP", NULL, &buf);
- if (ACPI_FAILURE(status))
- return -ENODEV;
-
- obja = (union acpi_object *)buf.pointer;
- if (obja->type != ACPI_TYPE_PACKAGE) {
- result = -EINVAL;
- goto end;
- }
-
- for (i = 0; i < obja->package.count; i++) {
- objb = &obja->package.elements[i];
- if (objb->type != ACPI_TYPE_BUFFER) {
- result = -EINVAL;
- goto end;
- }
-
- /* UUID must be 16 bytes */
- if (objb->buffer.length != 16) {
- result = -EINVAL;
- goto end;
- }
-
- for (j = 0; j < INT3400_THERMAL_MAXIMUM_UUID; j++) {
- guid_t guid;
-
- guid_parse(int3400_thermal_uuids[j], &guid);
- if (guid_equal((guid_t *)objb->buffer.pointer, &guid)) {
- priv->uuid_bitmap |= (1 << j);
- break;
- }
- }
- }
-
-end:
- kfree(buf.pointer);
- return result;
-}
-
-static int int3400_thermal_run_osc(acpi_handle handle,
- enum int3400_thermal_uuid uuid, bool enable)
-{
- u32 ret, buf[2];
- acpi_status status;
- int result = 0;
- struct acpi_osc_context context = {
- .uuid_str = int3400_thermal_uuids[uuid],
- .rev = 1,
- .cap.length = 8,
- };
-
- buf[OSC_QUERY_DWORD] = 0;
- buf[OSC_SUPPORT_DWORD] = enable;
-
- context.cap.pointer = buf;
-
- status = acpi_run_osc(handle, &context);
- if (ACPI_SUCCESS(status)) {
- ret = *((u32 *)(context.ret.pointer + 4));
- if (ret != enable)
- result = -EPERM;
- } else
- result = -EPERM;
-
- kfree(context.ret.pointer);
- return result;
-}
-
-static int int3400_thermal_get_temp(struct thermal_zone_device *thermal,
- int *temp)
-{
- *temp = 20 * 1000; /* faked temp sensor with 20C */
- return 0;
-}
-
-static int int3400_thermal_get_mode(struct thermal_zone_device *thermal,
- enum thermal_device_mode *mode)
-{
- struct int3400_thermal_priv *priv = thermal->devdata;
-
- if (!priv)
- return -EINVAL;
-
- *mode = priv->mode;
-
- return 0;
-}
-
-static int int3400_thermal_set_mode(struct thermal_zone_device *thermal,
- enum thermal_device_mode mode)
-{
- struct int3400_thermal_priv *priv = thermal->devdata;
- bool enable;
- int result = 0;
-
- if (!priv)
- return -EINVAL;
-
- if (mode == THERMAL_DEVICE_ENABLED)
- enable = true;
- else if (mode == THERMAL_DEVICE_DISABLED)
- enable = false;
- else
- return -EINVAL;
-
- if (enable != priv->mode) {
- priv->mode = enable;
- result = int3400_thermal_run_osc(priv->adev->handle,
- priv->current_uuid_index,
- enable);
- }
- return result;
-}
-
-static struct thermal_zone_device_ops int3400_thermal_ops = {
- .get_temp = int3400_thermal_get_temp,
-};
-
-static struct thermal_zone_params int3400_thermal_params = {
- .governor_name = "user_space",
- .no_hwmon = true,
-};
-
-static int int3400_thermal_probe(struct platform_device *pdev)
-{
- struct acpi_device *adev = ACPI_COMPANION(&pdev->dev);
- struct int3400_thermal_priv *priv;
- int result;
-
- if (!adev)
- return -ENODEV;
-
- priv = kzalloc(sizeof(struct int3400_thermal_priv), GFP_KERNEL);
- if (!priv)
- return -ENOMEM;
-
- priv->adev = adev;
-
- result = int3400_thermal_get_uuids(priv);
- if (result)
- goto free_priv;
-
- result = acpi_parse_art(priv->adev->handle, &priv->art_count,
- &priv->arts, true);
- if (result)
- dev_dbg(&pdev->dev, "_ART table parsing error\n");
-
- result = acpi_parse_trt(priv->adev->handle, &priv->trt_count,
- &priv->trts, true);
- if (result)
- dev_dbg(&pdev->dev, "_TRT table parsing error\n");
-
- platform_set_drvdata(pdev, priv);
-
- if (priv->uuid_bitmap & 1 << INT3400_THERMAL_PASSIVE_1) {
- int3400_thermal_ops.get_mode = int3400_thermal_get_mode;
- int3400_thermal_ops.set_mode = int3400_thermal_set_mode;
- }
- priv->thermal = thermal_zone_device_register("INT3400 Thermal", 0, 0,
- priv, &int3400_thermal_ops,
- &int3400_thermal_params, 0, 0);
- if (IS_ERR(priv->thermal)) {
- result = PTR_ERR(priv->thermal);
- goto free_art_trt;
- }
-
- priv->rel_misc_dev_res = acpi_thermal_rel_misc_device_add(
- priv->adev->handle);
-
- result = sysfs_create_group(&pdev->dev.kobj, &uuid_attribute_group);
- if (result)
- goto free_zone;
-
- return 0;
-
-free_zone:
- thermal_zone_device_unregister(priv->thermal);
-free_art_trt:
- kfree(priv->trts);
- kfree(priv->arts);
-free_priv:
- kfree(priv);
- return result;
-}
-
-static int int3400_thermal_remove(struct platform_device *pdev)
-{
- struct int3400_thermal_priv *priv = platform_get_drvdata(pdev);
-
- if (!priv->rel_misc_dev_res)
- acpi_thermal_rel_misc_device_remove(priv->adev->handle);
-
- sysfs_remove_group(&pdev->dev.kobj, &uuid_attribute_group);
- thermal_zone_device_unregister(priv->thermal);
- kfree(priv->trts);
- kfree(priv->arts);
- kfree(priv);
- return 0;
-}
-
-static const struct acpi_device_id int3400_thermal_match[] = {
- {"INT3400", 0},
- {}
-};
-
-MODULE_DEVICE_TABLE(acpi, int3400_thermal_match);
-
-static struct platform_driver int3400_thermal_driver = {
- .probe = int3400_thermal_probe,
- .remove = int3400_thermal_remove,
- .driver = {
- .name = "int3400 thermal",
- .acpi_match_table = ACPI_PTR(int3400_thermal_match),
- },
-};
-
-module_platform_driver(int3400_thermal_driver);
-
-MODULE_DESCRIPTION("INT3400 Thermal driver");
-MODULE_AUTHOR("Zhang Rui <rui.zhang@intel.com>");
-MODULE_LICENSE("GPL");