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_state *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_state *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_state *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 enum dc_edid_status dm_helpers_read_local_edid( 100 struct dc_context *ctx, 101 struct dc_link *link, 102 struct dc_sink *sink); 103 104 105 #endif /* __DM_HELPERS__ */ 106