| /* SPDX-License-Identifier: GPL-2.0 */ |
| /* |
| * Copyright (c) 2020 MediaTek Inc. |
| */ |
| |
| #ifndef _BACKLIGHT_COOLING_H |
| #define _BACKLIGHT_COOLING_H |
| |
| #include <linux/thermal.h> |
| |
| /*=========================================================== |
| * Macro Definitions |
| *=========================================================== |
| */ |
| #define BACKLIGHT_COOLING_UNLIMITED_STATE (0) |
| #define BACKLIGHT_COOLING_MAX_STATE (100) |
| #define MAX_BACKLIGHT_COOLER_NAME_LEN (20) |
| |
| /*================================================== |
| * Type Definitions |
| *================================================== |
| */ |
| /** |
| * struct backlight_cooling_device - data for backlight cooling device |
| * @name: naming string for this cooling device |
| * @target_state: target cooling state which is set in set_cur_state() |
| * callback. |
| * @max_state: maximum state supported for this cooling device |
| * @cdev: thermal_cooling_device pointer to keep track of the |
| * registered cooling device. |
| * @throttle: callback function to handle throttle request |
| * @dev: device node pointer |
| */ |
| struct backlight_cooling_device { |
| char name[MAX_BACKLIGHT_COOLER_NAME_LEN]; |
| unsigned long target_state; |
| unsigned long max_state; |
| struct thermal_cooling_device *cdev; |
| int (*throttle)(struct backlight_cooling_device *bl_cdev, unsigned long state); |
| struct device *dev; |
| }; |
| |
| #endif |
