| /* |
| * Copyright 2012-15 Advanced Micro Devices, Inc. |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining a |
| * copy of this software and associated documentation files (the "Software"), |
| * to deal in the Software without restriction, including without limitation |
| * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
| * and/or sell copies of the Software, and to permit persons to whom the |
| * Software is furnished to do so, subject to the following conditions: |
| * |
| * The above copyright notice and this permission notice shall be included in |
| * all copies or substantial portions of the Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR |
| * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, |
| * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR |
| * OTHER DEALINGS IN THE SOFTWARE. |
| * |
| * Authors: AMD |
| * |
| */ |
| |
| #include <linux/slab.h> |
| |
| #include "dm_services.h" |
| #include "dm_helpers.h" |
| #include "core_types.h" |
| |
| /******************************************************************************* |
| * Private functions |
| ******************************************************************************/ |
| |
| static void dc_sink_destruct(struct dc_sink *sink) |
| { |
| if (sink->dc_container_id) { |
| kfree(sink->dc_container_id); |
| sink->dc_container_id = NULL; |
| } |
| } |
| |
| static bool dc_sink_construct(struct dc_sink *sink, const struct dc_sink_init_data *init_params) |
| { |
| |
| struct dc_link *link = init_params->link; |
| |
| if (!link) |
| return false; |
| |
| sink->sink_signal = init_params->sink_signal; |
| sink->link = link; |
| sink->ctx = link->ctx; |
| sink->dongle_max_pix_clk = init_params->dongle_max_pix_clk; |
| sink->converter_disable_audio = init_params->converter_disable_audio; |
| sink->dc_container_id = NULL; |
| sink->sink_id = init_params->link->ctx->dc_sink_id_count; |
| // increment dc_sink_id_count because we don't want two sinks with same ID |
| // unless they are actually the same |
| init_params->link->ctx->dc_sink_id_count++; |
| |
| return true; |
| } |
| |
| /******************************************************************************* |
| * Public functions |
| ******************************************************************************/ |
| |
| void dc_sink_retain(struct dc_sink *sink) |
| { |
| kref_get(&sink->refcount); |
| } |
| |
| static void dc_sink_free(struct kref *kref) |
| { |
| struct dc_sink *sink = container_of(kref, struct dc_sink, refcount); |
| dc_sink_destruct(sink); |
| kfree(sink); |
| } |
| |
| void dc_sink_release(struct dc_sink *sink) |
| { |
| kref_put(&sink->refcount, dc_sink_free); |
| } |
| |
| struct dc_sink *dc_sink_create(const struct dc_sink_init_data *init_params) |
| { |
| struct dc_sink *sink = kzalloc(sizeof(*sink), GFP_KERNEL); |
| |
| if (NULL == sink) |
| goto alloc_fail; |
| |
| if (false == dc_sink_construct(sink, init_params)) |
| goto construct_fail; |
| |
| kref_init(&sink->refcount); |
| |
| return sink; |
| |
| construct_fail: |
| kfree(sink); |
| |
| alloc_fail: |
| return NULL; |
| } |
| |
| /******************************************************************************* |
| * Protected functions - visible only inside of DC (not visible in DM) |
| ******************************************************************************/ |