drivers/gpu/drm/amd/display/dc/gpio/gpio_service.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_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