drivers/gpu/drm/amd/display/dc/dm_helpers.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 /**
  27  * This file defines helper functions provided by the Display Manager to
  28  * Display Core.
  29  */
  30 #ifndef __DM_HELPERS__
  31 #define __DM_HELPERS__
  32
  33 #include "dc_types.h"
  34 #include "dc.h"
  35
  36 struct dp_mst_stream_allocation_table;
  37
  38 enum dc_edid_status dm_helpers_parse_edid_caps(
  39         struct dc_context *ctx,
  40         const struct dc_edid *edid,
  41         struct dc_edid_caps *edid_caps);
  42
  43 /*
  44  * Writes payload allocation table in immediate downstream device.
  45  */
  46 bool dm_helpers_dp_mst_write_payload_allocation_table(
  47                 struct dc_context *ctx,
  48                 const struct dc_stream *stream,
  49                 struct dp_mst_stream_allocation_table *proposed_table,
  50                 bool enable);
  51
  52 /*
  53  * Polls for ACT (allocation change trigger) handled and
  54  */
  55 bool dm_helpers_dp_mst_poll_for_allocation_change_trigger(
  56                 struct dc_context *ctx,
  57                 const struct dc_stream *stream);
  58 /*
  59  * Sends ALLOCATE_PAYLOAD message.
  60  */
  61 bool dm_helpers_dp_mst_send_payload_allocation(
  62                 struct dc_context *ctx,
  63                 const struct dc_stream *stream,
  64                 bool enable);
  65
  66 bool dm_helpers_dp_mst_start_top_mgr(
  67                 struct dc_context *ctx,
  68                 const struct dc_link *link,
  69                 bool boot);
  70
  71 void dm_helpers_dp_mst_stop_top_mgr(
  72                 struct dc_context *ctx,
  73                 const struct dc_link *link);
  74 /**
  75  * OS specific aux read callback.
  76  */
  77 bool dm_helpers_dp_read_dpcd(
  78                 struct dc_context *ctx,
  79                 const struct dc_link *link,
  80                 uint32_t address,
  81                 uint8_t *data,
  82                 uint32_t size);
  83
  84 /**
  85  * OS specific aux write callback.
  86  */
  87 bool dm_helpers_dp_write_dpcd(
  88                 struct dc_context *ctx,
  89                 const struct dc_link *link,
  90                 uint32_t address,
  91                 const uint8_t *data,
  92                 uint32_t size);
  93
  94 bool dm_helpers_submit_i2c(
  95                 struct dc_context *ctx,
  96                 const struct dc_link *link,
  97                 struct i2c_command *cmd);
  98
  99
 100
 101
 102
 103
 104 enum dc_edid_status dm_helpers_read_local_edid(
 105                 struct dc_context *ctx,
 106                 struct dc_link *link,
 107                 struct dc_sink *sink);
 108
 109
 110 #endif /* __DM_HELPERS__ */