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 /* 45 * Update DP branch info 46 */ 47 void dm_helpers_dp_update_branch_info( 48 struct dc_context *ctx, 49 const struct dc_link *link); 50 51 /* 52 * Writes payload allocation table in immediate downstream device. 53 */ 54 bool dm_helpers_dp_mst_write_payload_allocation_table( 55 struct dc_context *ctx, 56 const struct dc_stream_state *stream, 57 struct dp_mst_stream_allocation_table *proposed_table, 58 bool enable); 59 60 /* 61 * Clear payload allocation table before enable MST DP link. 62 */ 63 void dm_helpers_dp_mst_clear_payload_allocation_table( 64 struct dc_context *ctx, 65 const struct dc_link *link); 66 67 /* 68 * Polls for ACT (allocation change trigger) handled and 69 */ 70 bool dm_helpers_dp_mst_poll_for_allocation_change_trigger( 71 struct dc_context *ctx, 72 const struct dc_stream_state *stream); 73 /* 74 * Sends ALLOCATE_PAYLOAD message. 75 */ 76 bool dm_helpers_dp_mst_send_payload_allocation( 77 struct dc_context *ctx, 78 const struct dc_stream_state *stream, 79 bool enable); 80 81 bool dm_helpers_dp_mst_start_top_mgr( 82 struct dc_context *ctx, 83 const struct dc_link *link, 84 bool boot); 85 86 void dm_helpers_dp_mst_stop_top_mgr( 87 struct dc_context *ctx, 88 const struct dc_link *link); 89 /** 90 * OS specific aux read callback. 91 */ 92 bool dm_helpers_dp_read_dpcd( 93 struct dc_context *ctx, 94 const struct dc_link *link, 95 uint32_t address, 96 uint8_t *data, 97 uint32_t size); 98 99 /** 100 * OS specific aux write callback. 101 */ 102 bool dm_helpers_dp_write_dpcd( 103 struct dc_context *ctx, 104 const struct dc_link *link, 105 uint32_t address, 106 const uint8_t *data, 107 uint32_t size); 108 109 bool dm_helpers_submit_i2c( 110 struct dc_context *ctx, 111 const struct dc_link *link, 112 struct i2c_command *cmd); 113 114 bool dm_helpers_is_dp_sink_present( 115 struct dc_link *link); 116 117 enum dc_edid_status dm_helpers_read_local_edid( 118 struct dc_context *ctx, 119 struct dc_link *link, 120 struct dc_sink *sink); 121 122 void dm_set_dcn_clocks( 123 struct dc_context *ctx, 124 struct dc_clocks *clks); 125 126 #endif /* __DM_HELPERS__ */ 127