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