Move the WMI interface definitions to a header, so that the definitions can be shared with drivers/acpi/video_detect.c . Changes in v2: - Add missing Nvidia copyright header - Move WMI_BRIGHTNESS_GUID to nvidia-wmi-ec-backlight.h as well
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| 1 | /* SPDX-License-Identifier: GPL-2.0-only */ | ||
| 2 | /* | ||
| 3 | * Copyright (c) 2020, NVIDIA CORPORATION. All rights reserved. | ||
| 4 | */ | ||
| 5 | |||
| 6 | #ifndef __PLATFORM_DATA_X86_NVIDIA_WMI_EC_BACKLIGHT_H | ||
| 7 | #define __PLATFORM_DATA_X86_NVIDIA_WMI_EC_BACKLIGHT_H | ||
| 8 | |||
| 9 | #define WMI_BRIGHTNESS_GUID "603E9613-EF25-4338-A3D0-C46177516DB7" | ||
| 10 | |||
| 11 | /** | ||
| 12 | * enum wmi_brightness_method - WMI method IDs | ||
| 13 | * @WMI_BRIGHTNESS_METHOD_LEVEL: Get/Set EC brightness level status | ||
| 14 | * @WMI_BRIGHTNESS_METHOD_SOURCE: Get/Set EC Brightness Source | ||
| 15 | */ | ||
| 16 | enum wmi_brightness_method { | ||
| 17 | WMI_BRIGHTNESS_METHOD_LEVEL = 1, | ||
| 18 | WMI_BRIGHTNESS_METHOD_SOURCE = 2, | ||
| 19 | WMI_BRIGHTNESS_METHOD_MAX | ||
| 20 | }; | ||
| 21 | |||
| 22 | /** | ||
| 23 | * enum wmi_brightness_mode - Operation mode for WMI-wrapped method | ||
| 24 | * @WMI_BRIGHTNESS_MODE_GET: Get the current brightness level/source. | ||
| 25 | * @WMI_BRIGHTNESS_MODE_SET: Set the brightness level. | ||
| 26 | * @WMI_BRIGHTNESS_MODE_GET_MAX_LEVEL: Get the maximum brightness level. This | ||
| 27 | * is only valid when the WMI method is | ||
| 28 | * %WMI_BRIGHTNESS_METHOD_LEVEL. | ||
| 29 | */ | ||
| 30 | enum wmi_brightness_mode { | ||
| 31 | WMI_BRIGHTNESS_MODE_GET = 0, | ||
| 32 | WMI_BRIGHTNESS_MODE_SET = 1, | ||
| 33 | WMI_BRIGHTNESS_MODE_GET_MAX_LEVEL = 2, | ||
| 34 | WMI_BRIGHTNESS_MODE_MAX | ||
| 35 | }; | ||
| 36 | |||
| 37 | /** | ||
| 38 | * enum wmi_brightness_source - Backlight brightness control source selection | ||
| 39 | * @WMI_BRIGHTNESS_SOURCE_GPU: Backlight brightness is controlled by the GPU. | ||
| 40 | * @WMI_BRIGHTNESS_SOURCE_EC: Backlight brightness is controlled by the | ||
| 41 | * system's Embedded Controller (EC). | ||
| 42 | * @WMI_BRIGHTNESS_SOURCE_AUX: Backlight brightness is controlled over the | ||
| 43 | * DisplayPort AUX channel. | ||
| 44 | */ | ||
| 45 | enum wmi_brightness_source { | ||
| 46 | WMI_BRIGHTNESS_SOURCE_GPU = 1, | ||
| 47 | WMI_BRIGHTNESS_SOURCE_EC = 2, | ||
| 48 | WMI_BRIGHTNESS_SOURCE_AUX = 3, | ||
| 49 | WMI_BRIGHTNESS_SOURCE_MAX | ||
| 50 | }; | ||
| 51 | |||
| 52 | /** | ||
| 53 | * struct wmi_brightness_args - arguments for the WMI-wrapped ACPI method | ||
| 54 | * @mode: Pass in an &enum wmi_brightness_mode value to select between | ||
| 55 | * getting or setting a value. | ||
| 56 | * @val: In parameter for value to set when using %WMI_BRIGHTNESS_MODE_SET | ||
| 57 | * mode. Not used in conjunction with %WMI_BRIGHTNESS_MODE_GET or | ||
| 58 | * %WMI_BRIGHTNESS_MODE_GET_MAX_LEVEL mode. | ||
| 59 | * @ret: Out parameter returning retrieved value when operating in | ||
| 60 | * %WMI_BRIGHTNESS_MODE_GET or %WMI_BRIGHTNESS_MODE_GET_MAX_LEVEL | ||
| 61 | * mode. Not used in %WMI_BRIGHTNESS_MODE_SET mode. | ||
| 62 | * @ignored: Padding; not used. The ACPI method expects a 24 byte params struct. | ||
| 63 | * | ||
| 64 | * This is the parameters structure for the WmiBrightnessNotify ACPI method as | ||
| 65 | * wrapped by WMI. The value passed in to @val or returned by @ret will be a | ||
| 66 | * brightness value when the WMI method ID is %WMI_BRIGHTNESS_METHOD_LEVEL, or | ||
| 67 | * an &enum wmi_brightness_source value with %WMI_BRIGHTNESS_METHOD_SOURCE. | ||
| 68 | */ | ||
| 69 | struct wmi_brightness_args { | ||
| 70 | u32 mode; | ||
| 71 | u32 val; | ||
| 72 | u32 ret; | ||
| 73 | u32 ignored[3]; | ||
| 74 | }; | ||
| 75 | |||
| 76 | #endif | ||