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 /*
  39  * Allocate memory accessible by the GPU
  40  *
  41  * frame buffer allocations must be aligned to a 4096-byte boundary
  42  *
  43  * Returns virtual address, sets addr to physical address
  44  */
  45 void *dm_helpers_allocate_gpu_mem(
  46                 struct dc_context *ctx,
  47                 enum dc_gpu_mem_alloc_type type,
  48                 size_t size,
  49                 long long *addr);
  50
  51 /*
  52  * Free the GPU-accessible memory at the virtual address pvMem
  53  */
  54 void dm_helpers_free_gpu_mem(
  55                 struct dc_context *ctx,
  56                 enum dc_gpu_mem_alloc_type type,
  57                 void *pvMem);
  58
  59 enum dc_edid_status dm_helpers_parse_edid_caps(
  60         struct dc_context *ctx,
  61         const struct dc_edid *edid,
  62         struct dc_edid_caps *edid_caps);
  63
  64
  65 /*
  66  * Update DP branch info
  67  */
  68 void dm_helpers_dp_update_branch_info(
  69                 struct dc_context *ctx,
  70                 const struct dc_link *link);
  71
  72 /*
  73  * Writes payload allocation table in immediate downstream device.
  74  */
  75 bool dm_helpers_dp_mst_write_payload_allocation_table(
  76                 struct dc_context *ctx,
  77                 const struct dc_stream_state *stream,
  78                 struct dp_mst_stream_allocation_table *proposed_table,
  79                 bool enable);
  80
  81 /*
  82  * poll pending down reply
  83  */
  84 void dm_helpers_dp_mst_poll_pending_down_reply(
  85         struct dc_context *ctx,
  86         const struct dc_link *link);
  87
  88 /*
  89  * Clear payload allocation table before enable MST DP link.
  90  */
  91 void dm_helpers_dp_mst_clear_payload_allocation_table(
  92         struct dc_context *ctx,
  93         const struct dc_link *link);
  94
  95 /*
  96  * Polls for ACT (allocation change trigger) handled and
  97  */
  98 enum act_return_status dm_helpers_dp_mst_poll_for_allocation_change_trigger(
  99                 struct dc_context *ctx,
 100                 const struct dc_stream_state *stream);
 101 /*
 102  * Sends ALLOCATE_PAYLOAD message.
 103  */
 104 bool dm_helpers_dp_mst_send_payload_allocation(
 105                 struct dc_context *ctx,
 106                 const struct dc_stream_state *stream,
 107                 bool enable);
 108
 109 bool dm_helpers_dp_mst_start_top_mgr(
 110                 struct dc_context *ctx,
 111                 const struct dc_link *link,
 112                 bool boot);
 113
 114 void dm_helpers_dp_mst_stop_top_mgr(
 115                 struct dc_context *ctx,
 116                 struct dc_link *link);
 117 /**
 118  * OS specific aux read callback.
 119  */
 120 bool dm_helpers_dp_read_dpcd(
 121                 struct dc_context *ctx,
 122                 const struct dc_link *link,
 123                 uint32_t address,
 124                 uint8_t *data,
 125                 uint32_t size);
 126
 127 /**
 128  * OS specific aux write callback.
 129  */
 130 bool dm_helpers_dp_write_dpcd(
 131                 struct dc_context *ctx,
 132                 const struct dc_link *link,
 133                 uint32_t address,
 134                 const uint8_t *data,
 135                 uint32_t size);
 136
 137 bool dm_helpers_submit_i2c(
 138                 struct dc_context *ctx,
 139                 const struct dc_link *link,
 140                 struct i2c_command *cmd);
 141
 142 bool dm_helpers_dp_write_dsc_enable(
 143                 struct dc_context *ctx,
 144                 const struct dc_stream_state *stream,
 145                 bool enable
 146 );
 147 bool dm_helpers_is_dp_sink_present(
 148                 struct dc_link *link);
 149
 150 enum dc_edid_status dm_helpers_read_local_edid(
 151                 struct dc_context *ctx,
 152                 struct dc_link *link,
 153                 struct dc_sink *sink);
 154
 155 void dm_set_dcn_clocks(
 156                 struct dc_context *ctx,
 157                 struct dc_clocks *clks);
 158
 159 #endif /* __DM_HELPERS__ */