Thermal: int3400 thermal: register to thermal framework
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
This commit is contained in:
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c5738dddc0
Коммит
0ab15365ff
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@ -237,6 +237,7 @@ config INTEL_SOC_DTS_THERMAL
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config INT340X_THERMAL
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tristate "ACPI INT340X thermal drivers"
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depends on X86 && ACPI
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select THERMAL_GOV_USER_SPACE
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help
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Newer laptops and tablets that use ACPI may have thermal sensors and
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other devices with thermal control capabilities outside the core
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@ -13,6 +13,7 @@
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#include <linux/module.h>
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#include <linux/platform_device.h>
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#include <linux/acpi.h>
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#include <linux/thermal.h>
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struct art {
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acpi_handle source;
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@ -60,6 +61,8 @@ static u8 *int3400_thermal_uuids[INT3400_THERMAL_MAXIMUM_UUID] = {
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struct int3400_thermal_priv {
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struct acpi_device *adev;
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struct thermal_zone_device *thermal;
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int mode;
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int art_count;
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struct art *arts;
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int trt_count;
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@ -114,6 +117,36 @@ end:
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return result;
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}
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static int int3400_thermal_run_osc(acpi_handle handle,
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enum int3400_thermal_uuid uuid, bool enable)
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{
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u32 ret, buf[2];
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acpi_status status;
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int result = 0;
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struct acpi_osc_context context = {
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.uuid_str = int3400_thermal_uuids[uuid],
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.rev = 1,
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.cap.length = 8,
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};
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buf[OSC_QUERY_DWORD] = 0;
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buf[OSC_SUPPORT_DWORD] = enable;
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context.cap.pointer = buf;
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status = acpi_run_osc(handle, &context);
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if (ACPI_SUCCESS(status)) {
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ret = *((u32 *)(context.ret.pointer + 4));
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if (ret != enable)
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result = -EPERM;
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} else
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result = -EPERM;
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kfree(context.ret.pointer);
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return result;
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}
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static int parse_art(struct int3400_thermal_priv *priv)
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{
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acpi_handle handle = priv->adev->handle;
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@ -243,6 +276,61 @@ end:
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return result;
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}
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static int int3400_thermal_get_temp(struct thermal_zone_device *thermal,
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unsigned long *temp)
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{
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*temp = 20 * 1000; /* faked temp sensor with 20C */
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return 0;
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}
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static int int3400_thermal_get_mode(struct thermal_zone_device *thermal,
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enum thermal_device_mode *mode)
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{
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struct int3400_thermal_priv *priv = thermal->devdata;
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if (!priv)
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return -EINVAL;
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*mode = priv->mode;
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return 0;
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}
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static int int3400_thermal_set_mode(struct thermal_zone_device *thermal,
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enum thermal_device_mode mode)
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{
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struct int3400_thermal_priv *priv = thermal->devdata;
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bool enable;
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int result = 0;
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if (!priv)
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return -EINVAL;
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if (mode == THERMAL_DEVICE_ENABLED)
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enable = true;
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else if (mode == THERMAL_DEVICE_DISABLED)
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enable = false;
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else
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return -EINVAL;
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if (enable != priv->mode) {
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priv->mode = enable;
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/* currently, only PASSIVE COOLING is supported */
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result = int3400_thermal_run_osc(priv->adev->handle,
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INT3400_THERMAL_PASSIVE_1, enable);
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}
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return result;
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}
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static struct thermal_zone_device_ops int3400_thermal_ops = {
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.get_temp = int3400_thermal_get_temp,
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};
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static struct thermal_zone_params int3400_thermal_params = {
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.governor_name = "user_space",
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.no_hwmon = true,
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};
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static int int3400_thermal_probe(struct platform_device *pdev)
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{
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struct acpi_device *adev = ACPI_COMPANION(&pdev->dev);
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@ -272,7 +360,21 @@ static int int3400_thermal_probe(struct platform_device *pdev)
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platform_set_drvdata(pdev, priv);
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if (priv->uuid_bitmap & 1 << INT3400_THERMAL_PASSIVE_1) {
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int3400_thermal_ops.get_mode = int3400_thermal_get_mode;
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int3400_thermal_ops.set_mode = int3400_thermal_set_mode;
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}
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priv->thermal = thermal_zone_device_register("INT3400 Thermal", 0, 0,
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priv, &int3400_thermal_ops,
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&int3400_thermal_params, 0, 0);
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if (IS_ERR(priv->thermal)) {
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result = PTR_ERR(priv->thermal);
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goto free_trt;
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}
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return 0;
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free_trt:
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kfree(priv->trts);
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free_art:
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kfree(priv->arts);
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free_priv:
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@ -284,6 +386,7 @@ static int int3400_thermal_remove(struct platform_device *pdev)
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{
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struct int3400_thermal_priv *priv = platform_get_drvdata(pdev);
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thermal_zone_device_unregister(priv->thermal);
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kfree(priv->trts);
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kfree(priv->arts);
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kfree(priv);
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