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 #include <linux/slab.h> 27 28 #include "dm_services.h" 29 #include "dm_services_types.h" 30 31 #include "virtual_link_encoder.h" 32 33 static bool virtual_link_encoder_validate_output_with_stream( 34 struct link_encoder *enc, 35 const struct dc_stream_state *stream) { return true; } 36 37 static void virtual_link_encoder_hw_init(struct link_encoder *enc) {} 38 39 static void virtual_link_encoder_setup( 40 struct link_encoder *enc, 41 enum signal_type signal) {} 42 43 static void virtual_link_encoder_enable_tmds_output( 44 struct link_encoder *enc, 45 enum clock_source_id clock_source, 46 enum dc_color_depth color_depth, 47 enum signal_type signal, 48 uint32_t pixel_clock) {} 49 50 static void virtual_link_encoder_enable_dp_output( 51 struct link_encoder *enc, 52 const struct dc_link_settings *link_settings, 53 enum clock_source_id clock_source) {} 54 55 static void virtual_link_encoder_enable_dp_mst_output( 56 struct link_encoder *enc, 57 const struct dc_link_settings *link_settings, 58 enum clock_source_id clock_source) {} 59 60 static void virtual_link_encoder_disable_output( 61 struct link_encoder *link_enc, 62 enum signal_type signal) {} 63 64 static void virtual_link_encoder_dp_set_lane_settings( 65 struct link_encoder *enc, 66 const struct dc_link_settings *link_settings, 67 const struct dc_lane_settings lane_settings[LANE_COUNT_DP_MAX]) {} 68 69 static void virtual_link_encoder_dp_set_phy_pattern( 70 struct link_encoder *enc, 71 const struct encoder_set_dp_phy_pattern_param *param) {} 72 73 static void virtual_link_encoder_update_mst_stream_allocation_table( 74 struct link_encoder *enc, 75 const struct link_mst_stream_allocation_table *table) {} 76 77 static void virtual_link_encoder_connect_dig_be_to_fe( 78 struct link_encoder *enc, 79 enum engine_id engine, 80 bool connect) {} 81 82 static void virtual_link_encoder_destroy(struct link_encoder **enc) 83 { 84 kfree(*enc); 85 *enc = NULL; 86 } 87 88 static void virtual_link_encoder_get_max_link_cap(struct link_encoder *enc, 89 struct dc_link_settings *link_settings) 90 { 91 /* Set Default link settings */ 92 struct dc_link_settings max_link_cap = {LANE_COUNT_FOUR, LINK_RATE_HIGH, 93 LINK_SPREAD_05_DOWNSPREAD_30KHZ, false, 0}; 94 *link_settings = max_link_cap; 95 } 96 97 static const struct link_encoder_funcs virtual_lnk_enc_funcs = { 98 .validate_output_with_stream = 99 virtual_link_encoder_validate_output_with_stream, 100 .hw_init = virtual_link_encoder_hw_init, 101 .setup = virtual_link_encoder_setup, 102 .enable_tmds_output = virtual_link_encoder_enable_tmds_output, 103 .enable_dp_output = virtual_link_encoder_enable_dp_output, 104 .enable_dp_mst_output = virtual_link_encoder_enable_dp_mst_output, 105 .disable_output = virtual_link_encoder_disable_output, 106 .get_max_link_cap = virtual_link_encoder_get_max_link_cap, 107 .dp_set_lane_settings = virtual_link_encoder_dp_set_lane_settings, 108 .dp_set_phy_pattern = virtual_link_encoder_dp_set_phy_pattern, 109 .update_mst_stream_allocation_table = 110 virtual_link_encoder_update_mst_stream_allocation_table, 111 .connect_dig_be_to_fe = virtual_link_encoder_connect_dig_be_to_fe, 112 .destroy = virtual_link_encoder_destroy 113 }; 114 115 bool virtual_link_encoder_construct( 116 struct link_encoder *enc, const struct encoder_init_data *init_data) 117 { 118 enc->funcs = &virtual_lnk_enc_funcs; 119 enc->ctx = init_data->ctx; 120 enc->id = init_data->encoder; 121 122 enc->hpd_source = init_data->hpd_source; 123 enc->connector = init_data->connector; 124 125 enc->transmitter = init_data->transmitter; 126 127 enc->output_signals = SIGNAL_TYPE_VIRTUAL; 128 129 enc->preferred_engine = ENGINE_ID_VIRTUAL; 130 131 return true; 132 } 133 134 135