LXR linux/drivers/gpu/drm/amd/display/dc/inc/hw/panel

   1/*
   2 * Copyright 2017 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 */
  23/*
  24 * panel_cntl.h
  25 *
  26 *  Created on: Oct 6, 2015
  27 *      Author: yonsun
  28 */
  29
  30#ifndef DC_PANEL_CNTL_H_
  31#define DC_PANEL_CNTL_H_
  32
  33#include "dc_types.h"
  34
  35#define MAX_BACKLIGHT_LEVEL 0xFFFF
  36
  37struct panel_cntl_backlight_registers {
  38        unsigned int BL_PWM_CNTL;
  39        unsigned int BL_PWM_CNTL2;
  40        unsigned int BL_PWM_PERIOD_CNTL;
  41        unsigned int LVTMA_PWRSEQ_REF_DIV_BL_PWM_REF_DIV;
  42};
  43
  44struct panel_cntl_funcs {
  45        void (*destroy)(struct panel_cntl **panel_cntl);
  46        uint32_t (*hw_init)(struct panel_cntl *panel_cntl);
  47        bool (*is_panel_backlight_on)(struct panel_cntl *panel_cntl);
  48        bool (*is_panel_powered_on)(struct panel_cntl *panel_cntl);
  49        void (*store_backlight_level)(struct panel_cntl *panel_cntl);
  50        void (*driver_set_backlight)(struct panel_cntl *panel_cntl,
  51                        uint32_t backlight_pwm_u16_16);
  52        uint32_t (*get_current_backlight)(struct panel_cntl *panel_cntl);
  53};
  54
  55struct panel_cntl_init_data {
  56        struct dc_context *ctx;
  57        uint32_t inst;
  58};
  59
  60struct panel_cntl {
  61        const struct panel_cntl_funcs *funcs;
  62        struct dc_context *ctx;
  63        uint32_t inst;
  64        /* registers setting needs to be saved and restored at InitBacklight */
  65        struct panel_cntl_backlight_registers stored_backlight_registers;
  66};
  67
  68#endif /* DC_PANEL_CNTL_H_ */
  69