xref: /linux/drivers/gpu/drm/amd/display/dc/gpio/gpio_service.h (revision ae22a94997b8a03dcb3c922857c203246711f9d4)
1 /*
2  * Copyright 2012-15 Advanced Micro Devices, Inc.
3  *
4  * Permission is hereby granted, free of charge, to any person obtaining a
5  * copy of this software and associated documentation files (the "Software"),
6  * to deal in the Software without restriction, including without limitation
7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8  * and/or sell copies of the Software, and to permit persons to whom the
9  * Software is furnished to do so, subject to the following conditions:
10  *
11  * The above copyright notice and this permission notice shall be included in
12  * all copies or substantial portions of the Software.
13  *
14  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
17  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
18  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
19  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
20  * OTHER DEALINGS IN THE SOFTWARE.
21  *
22  * Authors: AMD
23  *
24  */
25 
26 #ifndef __DAL_GPIO_SERVICE_H__
27 #define __DAL_GPIO_SERVICE_H__
28 
29 struct hw_translate;
30 struct hw_factory;
31 
32 struct gpio_service {
33 	struct dc_context *ctx;
34 	struct hw_translate translate;
35 	struct hw_factory factory;
36 	/*
37 	 * @brief
38 	 * Business storage.
39 	 * one byte For each member of 'enum gpio_id'
40 	 */
41 	char *busyness[GPIO_ID_COUNT];
42 };
43 
44 enum gpio_result dal_gpio_service_open(
45 	struct gpio *gpio);
46 
47 void dal_gpio_service_close(
48 	struct gpio_service *service,
49 	struct hw_gpio_pin **ptr);
50 
51 enum gpio_result dal_gpio_service_lock(
52 	struct gpio_service *service,
53 	enum gpio_id id,
54 	uint32_t en);
55 
56 enum gpio_result dal_gpio_service_unlock(
57 	struct gpio_service *service,
58 	enum gpio_id id,
59 	uint32_t en);
60 
61 #endif
62