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_INTERFACE_H__
27#define __DAL_GPIO_INTERFACE_H__
28
29#include "gpio_types.h"
30#include "grph_object_defs.h"
31
32struct gpio;
33
34/* Open the handle for future use */
35enum gpio_result dal_gpio_open(
36 struct gpio *gpio,
37 enum gpio_mode mode);
38
39enum gpio_result dal_gpio_open_ex(
40 struct gpio *gpio,
41 enum gpio_mode mode);
42
43/* Get high or low from the pin */
44enum gpio_result dal_gpio_get_value(
45 const struct gpio *gpio,
46 uint32_t *value);
47
48/* Set pin high or low */
49enum gpio_result dal_gpio_set_value(
50 const struct gpio *gpio,
51 uint32_t value);
52
53/* Get current mode */
54enum gpio_mode dal_gpio_get_mode(
55 const struct gpio *gpio);
56
57/* Change mode of the handle */
58enum gpio_result dal_gpio_change_mode(
59 struct gpio *gpio,
60 enum gpio_mode mode);
61
62/* Lock Pin */
63enum gpio_result dal_gpio_lock_pin(
64 struct gpio *gpio);
65
66/* Unlock Pin */
67enum gpio_result dal_gpio_unlock_pin(
68 struct gpio *gpio);
69
70/* Get the GPIO id */
71enum gpio_id dal_gpio_get_id(
72 const struct gpio *gpio);
73
74/* Get the GPIO enum */
75uint32_t dal_gpio_get_enum(
76 const struct gpio *gpio);
77
78/* Set the GPIO pin configuration */
79enum gpio_result dal_gpio_set_config(
80 struct gpio *gpio,
81 const struct gpio_config_data *config_data);
82
83/* Obtain GPIO pin info */
84enum gpio_result dal_gpio_get_pin_info(
85 const struct gpio *gpio,
86 struct gpio_pin_info *pin_info);
87
88/* Obtain GPIO sync source */
89enum sync_source dal_gpio_get_sync_source(
90 const struct gpio *gpio);
91
92/* Obtain GPIO pin output state (active low or active high) */
93enum gpio_pin_output_state dal_gpio_get_output_state(
94 const struct gpio *gpio);
95
96struct hw_ddc *dal_gpio_get_ddc(struct gpio *gpio);
97
98struct hw_hpd *dal_gpio_get_hpd(struct gpio *gpio);
99
100struct hw_generic *dal_gpio_get_generic(struct gpio *gpio);
101
102/* Close the handle */
103void dal_gpio_close(
104 struct gpio *gpio);
105
106
107
108
109#endif
110

source code of linux/drivers/gpu/drm/amd/display/include/gpio_interface.h