thermal/int340x_thermal: Export GDDV (0ba13c76) · Commits · 戴 / test

drivers/thermal/intel/int340x_thermal/int3400_thermal.c

+60 −0

Original line number	Diff line number	Diff line
		@@ -52,6 +52,25 @@ struct int3400_thermal_priv {
		u8 uuid_bitmap;
		int rel_misc_dev_res;
		int current_uuid_index;
		char *data_vault;
		};

		static ssize_t data_vault_read(struct file file, struct kobject kobj,
		struct bin_attribute attr, char buf, loff_t off, size_t count)
		{
		memcpy(buf, attr->private + off, count);
		return count;
		}

		static BIN_ATTR_RO(data_vault, 0);

		static struct bin_attribute *data_attributes[] = {
		&bin_attr_data_vault,
		NULL,
		};

		static const struct attribute_group data_attribute_group = {
		.bin_attrs = data_attributes,
		};

		static ssize_t available_uuids_show(struct device *dev,
		@@ -280,6 +299,32 @@ static struct thermal_zone_params int3400_thermal_params = {
		.no_hwmon = true,
		};

		static void int3400_setup_gddv(struct int3400_thermal_priv *priv)
		{
		struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
		union acpi_object *obj;
		acpi_status status;

		status = acpi_evaluate_object(priv->adev->handle, "GDDV", NULL,
		&buffer);
		if (ACPI_FAILURE(status) \|\| !buffer.length)
		return;

		obj = buffer.pointer;
		if (obj->type != ACPI_TYPE_PACKAGE \|\| obj->package.count != 1
		\|\| obj->package.elements[0].type != ACPI_TYPE_BUFFER) {
		kfree(buffer.pointer);
		return;
		}

		priv->data_vault = kmemdup(obj->package.elements[0].buffer.pointer,
		obj->package.elements[0].buffer.length,
		GFP_KERNEL);
		bin_attr_data_vault.private = priv->data_vault;
		bin_attr_data_vault.size = obj->package.elements[0].buffer.length;
		kfree(buffer.pointer);
		}

		static int int3400_thermal_probe(struct platform_device *pdev)
		{
		struct acpi_device *adev = ACPI_COMPANION(&pdev->dev);
		@@ -311,6 +356,8 @@ static int int3400_thermal_probe(struct platform_device *pdev)

		platform_set_drvdata(pdev, priv);

		int3400_setup_gddv(priv);

		priv->thermal = thermal_zone_device_register("INT3400 Thermal", 0, 0,
		priv, &int3400_thermal_ops,
		&int3400_thermal_params, 0, 0);
		@@ -326,6 +373,13 @@ static int int3400_thermal_probe(struct platform_device *pdev)
		if (result)
		goto free_rel_misc;

		if (priv->data_vault) {
		result = sysfs_create_group(&pdev->dev.kobj,
		&data_attribute_group);
		if (result)
		goto free_uuid;
		}

		result = acpi_install_notify_handler(
		priv->adev->handle, ACPI_DEVICE_NOTIFY, int3400_notify,
		(void *)priv);
		@@ -335,6 +389,9 @@ static int int3400_thermal_probe(struct platform_device *pdev)
		return 0;

		free_sysfs:
		if (priv->data_vault)
		sysfs_remove_group(&pdev->dev.kobj, &data_attribute_group);
		free_uuid:
		sysfs_remove_group(&pdev->dev.kobj, &uuid_attribute_group);
		free_rel_misc:
		if (!priv->rel_misc_dev_res)
		@@ -359,8 +416,11 @@ static int int3400_thermal_remove(struct platform_device *pdev)
		if (!priv->rel_misc_dev_res)
		acpi_thermal_rel_misc_device_remove(priv->adev->handle);

		if (priv->data_vault)
		sysfs_remove_group(&pdev->dev.kobj, &data_attribute_group);
		sysfs_remove_group(&pdev->dev.kobj, &uuid_attribute_group);
		thermal_zone_device_unregister(priv->thermal);
		kfree(priv->data_vault);
		kfree(priv->trts);
		kfree(priv->arts);
		kfree(priv);

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