diff options
Diffstat (limited to 'drivers/gpu/drm/amd/display/dc/core/dc_sink.c')
-rw-r--r-- | drivers/gpu/drm/amd/display/dc/core/dc_sink.c | 104 |
1 files changed, 104 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_sink.c b/drivers/gpu/drm/amd/display/dc/core/dc_sink.c new file mode 100644 index 000000000000..25fae38409ab --- /dev/null +++ b/drivers/gpu/drm/amd/display/dc/core/dc_sink.c @@ -0,0 +1,104 @@ +/* + * 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 "dm_services.h" +#include "dm_helpers.h" +#include "core_types.h" + +/******************************************************************************* + * Private functions + ******************************************************************************/ + +static void destruct(struct dc_sink *sink) +{ + if (sink->dc_container_id) { + kfree(sink->dc_container_id); + sink->dc_container_id = NULL; + } +} + +static bool 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; + + 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); + 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 == 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) + ******************************************************************************/ |