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

   1/* Copyright 2012-15 Advanced Micro Devices, Inc.
   2 *
   3 * Permission is hereby granted, free of charge, to any person obtaining a
   4 * copy of this software and associated documentation files (the "Software"),
   5 * to deal in the Software without restriction, including without limitation
   6 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   7 * and/or sell copies of the Software, and to permit persons to whom the
   8 * Software is furnished to do so, subject to the following conditions:
   9 *
  10 * The above copyright notice and this permission notice shall be included in
  11 * all copies or substantial portions of the Software.
  12 *
  13 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  14 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  15 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  16 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
  17 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  18 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  19 * OTHER DEALINGS IN THE SOFTWARE.
  20 *
  21 * Authors: AMD
  22 *
  23 */
  24
  25#ifndef __DC_DMCU_H__
  26#define __DC_DMCU_H__
  27
  28#include "dm_services_types.h"
  29
  30/* If HW itself ever powered down it will be 0.
  31 * fwDmcuInit will write to 1.
  32 * Driver will only call MCP init if current state is 1,
  33 * and the MCP command will transition this to 2.
  34 */
  35enum dmcu_state {
  36        DMCU_UNLOADED = 0,
  37        DMCU_LOADED_UNINITIALIZED = 1,
  38        DMCU_RUNNING = 2,
  39};
  40
  41struct dmcu_version {
  42        unsigned int interface_version;
  43        unsigned int abm_version;
  44        unsigned int psr_version;
  45        unsigned int build_version;
  46};
  47
  48struct dmcu {
  49        struct dc_context *ctx;
  50        const struct dmcu_funcs *funcs;
  51
  52        enum dmcu_state dmcu_state;
  53        struct dmcu_version dmcu_version;
  54        unsigned int cached_wait_loop_number;
  55};
  56
  57struct dmcu_funcs {
  58        bool (*dmcu_init)(struct dmcu *dmcu);
  59        bool (*load_iram)(struct dmcu *dmcu,
  60                        unsigned int start_offset,
  61                        const char *src,
  62                        unsigned int bytes);
  63        void (*set_psr_enable)(struct dmcu *dmcu, bool enable, bool wait);
  64        bool (*setup_psr)(struct dmcu *dmcu,
  65                        struct dc_link *link,
  66                        struct psr_context *psr_context);
  67        void (*get_psr_state)(struct dmcu *dmcu, uint32_t *psr_state);
  68        void (*set_psr_wait_loop)(struct dmcu *dmcu,
  69                        unsigned int wait_loop_number);
  70        void (*get_psr_wait_loop)(struct dmcu *dmcu,
  71                        unsigned int *psr_wait_loop_number);
  72        bool (*is_dmcu_initialized)(struct dmcu *dmcu);
  73        bool (*lock_phy)(struct dmcu *dmcu);
  74        bool (*unlock_phy)(struct dmcu *dmcu);
  75};
  76
  77#endif
  78