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