drivers/gpu/drm/amd/display/dc/gpio/hw_ddc.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_HW_DDC_H__
  27 #define __DAL_HW_DDC_H__
  28
  29 #include "ddc_regs.h"
  30
  31 struct hw_ddc {
  32         struct hw_gpio base;
  33         const struct ddc_registers *regs;
  34         const struct ddc_sh_mask *shifts;
  35         const struct ddc_sh_mask *masks;
  36 };
  37
  38 #define HW_DDC_FROM_BASE(hw_gpio) \
  39         container_of((HW_GPIO_FROM_BASE(hw_gpio)), struct hw_ddc, base)
  40
  41 void dal_hw_ddc_init(
  42         struct hw_ddc **hw_ddc,
  43         struct dc_context *ctx,
  44         enum gpio_id id,
  45         uint32_t en);
  46
  47 struct hw_gpio_pin *dal_hw_ddc_get_pin(struct gpio *gpio);
  48
  49 #endif