drivers/gpu/drm/amd/display/include/gpio_interface.h

   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