LXR linux/drivers/gpu/drm/amd/display/dc/inc/hw/gpio.h

   1/*
   2 * Copyright 2012-16 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_H__
  27#define __DAL_GPIO_H__
  28
  29#include "gpio_types.h"
  30
  31
  32union gpio_hw_container {
  33        struct hw_ddc *ddc;
  34        struct hw_generic *generic;
  35        struct hw_hpd *hpd;
  36};
  37
  38struct gpio {
  39        struct gpio_service *service;
  40        struct hw_gpio_pin *pin;
  41        enum gpio_id id;
  42        uint32_t en;
  43
  44        union gpio_hw_container hw_container;
  45        enum gpio_mode mode;
  46
  47        /* when GPIO comes from VBIOS, it has defined output state */
  48        enum gpio_pin_output_state output_state;
  49};
  50
  51#if 0
  52struct gpio_funcs {
  53
  54        struct hw_gpio_pin *(*create_ddc_data)(
  55                struct dc_context *ctx,
  56                enum gpio_id id,
  57                uint32_t en);
  58        struct hw_gpio_pin *(*create_ddc_clock)(
  59                struct dc_context *ctx,
  60                enum gpio_id id,
  61                uint32_t en);
  62        struct hw_gpio_pin *(*create_generic)(
  63                struct dc_context *ctx,
  64                enum gpio_id id,
  65                uint32_t en);
  66        struct hw_gpio_pin *(*create_hpd)(
  67                struct dc_context *ctx,
  68                enum gpio_id id,
  69                uint32_t en);
  70        struct hw_gpio_pin *(*create_gpio_pad)(
  71                struct dc_context *ctx,
  72                enum gpio_id id,
  73                uint32_t en);
  74        struct hw_gpio_pin *(*create_sync)(
  75                struct dc_context *ctx,
  76                enum gpio_id id,
  77                uint32_t en);
  78        struct hw_gpio_pin *(*create_gsl)(
  79                struct dc_context *ctx,
  80                enum gpio_id id,
  81                uint32_t en);
  82
  83        /* HW translation */
  84        bool (*offset_to_id)(
  85                uint32_t offset,
  86                uint32_t mask,
  87                enum gpio_id *id,
  88                uint32_t *en);
  89        bool (*id_to_offset)(
  90                enum gpio_id id,
  91                uint32_t en,
  92                struct gpio_pin_info *info);
  93};
  94#endif
  95
  96#endif  /* __DAL_GPIO__ */
  97