// SPDX-License-Identifier: GPL-2.0-only /* * INT3406 thermal driver for display participant device * * Copyright (C) 2016, Intel Corporation * Authors: Aaron Lu <[email protected]> */ #include <linux/module.h> #include <linux/platform_device.h> #include <linux/acpi.h> #include <linux/backlight.h> #include <linux/thermal.h> #include <acpi/video.h> #define INT3406_BRIGHTNESS_LIMITS_CHANGED … struct int3406_thermal_data { … }; /* * According to the ACPI spec, * "Each brightness level is represented by a number between 0 and 100, * and can be thought of as a percentage. For example, 50 can be 50% * power consumption or 50% brightness, as defined by the OEM." * * As int3406 device uses this value to communicate with the native * graphics driver, we make the assumption that it represents * the percentage of brightness only */ #define ACPI_TO_RAW(v, d) … #define RAW_TO_ACPI(v, d) … static int int3406_thermal_get_max_state(struct thermal_cooling_device *cooling_dev, unsigned long *state) { … } static int int3406_thermal_set_cur_state(struct thermal_cooling_device *cooling_dev, unsigned long state) { … } static int int3406_thermal_get_cur_state(struct thermal_cooling_device *cooling_dev, unsigned long *state) { … } static const struct thermal_cooling_device_ops video_cooling_ops = …; static int int3406_thermal_get_index(int *array, int nr, int value) { … } static void int3406_thermal_get_limit(struct int3406_thermal_data *d) { … } static void int3406_notify(acpi_handle handle, u32 event, void *data) { … } static int int3406_thermal_probe(struct platform_device *pdev) { … } static void int3406_thermal_remove(struct platform_device *pdev) { … } static const struct acpi_device_id int3406_thermal_match[] = …; MODULE_DEVICE_TABLE(acpi, int3406_thermal_match); static struct platform_driver int3406_thermal_driver = …; module_platform_driver(…) …; MODULE_DESCRIPTION(…) …; MODULE_LICENSE(…) …;
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