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 "dm_services.h" 27 #include "dm_helpers.h" 28 #include "core_types.h" 29 30 /******************************************************************************* 31 * Private functions 32 ******************************************************************************/ 33 34 static bool dc_sink_construct(struct dc_sink *sink, const struct dc_sink_init_data *init_params) 35 { 36 37 struct dc_link *link = init_params->link; 38 39 if (!link) 40 return false; 41 42 sink->sink_signal = init_params->sink_signal; 43 sink->link = link; 44 sink->ctx = link->ctx; 45 sink->dongle_max_pix_clk = init_params->dongle_max_pix_clk; 46 sink->converter_disable_audio = init_params->converter_disable_audio; 47 sink->dc_container_id = NULL; 48 sink->sink_id = init_params->link->ctx->dc_sink_id_count; 49 // increment dc_sink_id_count because we don't want two sinks with same ID 50 // unless they are actually the same 51 init_params->link->ctx->dc_sink_id_count++; 52 53 return true; 54 } 55 56 /******************************************************************************* 57 * Public functions 58 ******************************************************************************/ 59 60 void dc_sink_retain(struct dc_sink *sink) 61 { 62 kref_get(&sink->refcount); 63 } 64 65 static void dc_sink_free(struct kref *kref) 66 { 67 struct dc_sink *sink = container_of(kref, struct dc_sink, refcount); 68 kfree(sink->dc_container_id); 69 kfree(sink); 70 } 71 72 void dc_sink_release(struct dc_sink *sink) 73 { 74 kref_put(&sink->refcount, dc_sink_free); 75 } 76 77 struct dc_sink *dc_sink_create(const struct dc_sink_init_data *init_params) 78 { 79 struct dc_sink *sink = kzalloc(sizeof(*sink), GFP_KERNEL); 80 81 if (NULL == sink) 82 goto alloc_fail; 83 84 if (false == dc_sink_construct(sink, init_params)) 85 goto construct_fail; 86 87 kref_init(&sink->refcount); 88 89 return sink; 90 91 construct_fail: 92 kfree(sink); 93 94 alloc_fail: 95 return NULL; 96 } 97 98 /******************************************************************************* 99 * Protected functions - visible only inside of DC (not visible in DM) 100 ******************************************************************************/ 101