Thermal: int3400 thermal: register to thermal framework

Signed-off-by: Zhang Rui <rui.zhang@intel.com>
This commit is contained in:
Zhang Rui 2014-03-23 23:37:32 +08:00
Родитель c5738dddc0
Коммит 0ab15365ff
2 изменённых файлов: 104 добавлений и 0 удалений

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@ -237,6 +237,7 @@ config INTEL_SOC_DTS_THERMAL
config INT340X_THERMAL
tristate "ACPI INT340X thermal drivers"
depends on X86 && ACPI
select THERMAL_GOV_USER_SPACE
help
Newer laptops and tablets that use ACPI may have thermal sensors and
other devices with thermal control capabilities outside the core

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@ -13,6 +13,7 @@
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/acpi.h>
#include <linux/thermal.h>
struct art {
acpi_handle source;
@ -60,6 +61,8 @@ static u8 *int3400_thermal_uuids[INT3400_THERMAL_MAXIMUM_UUID] = {
struct int3400_thermal_priv {
struct acpi_device *adev;
struct thermal_zone_device *thermal;
int mode;
int art_count;
struct art *arts;
int trt_count;
@ -114,6 +117,36 @@ end:
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 parse_art(struct int3400_thermal_priv *priv)
{
acpi_handle handle = priv->adev->handle;
@ -243,6 +276,61 @@ end:
return result;
}
static int int3400_thermal_get_temp(struct thermal_zone_device *thermal,
unsigned long *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;
/* currently, only PASSIVE COOLING is supported */
result = int3400_thermal_run_osc(priv->adev->handle,
INT3400_THERMAL_PASSIVE_1, 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);
@ -272,7 +360,21 @@ static int int3400_thermal_probe(struct platform_device *pdev)
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_trt;
}
return 0;
free_trt:
kfree(priv->trts);
free_art:
kfree(priv->arts);
free_priv:
@ -284,6 +386,7 @@ static int int3400_thermal_remove(struct platform_device *pdev)
{
struct int3400_thermal_priv *priv = platform_get_drvdata(pdev);
thermal_zone_device_unregister(priv->thermal);
kfree(priv->trts);
kfree(priv->arts);
kfree(priv);