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(kref: &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(objp: sink->dc_container_id); |
69 | kfree(objp: sink); |
70 | } |
71 | |
72 | void dc_sink_release(struct dc_sink *sink) |
73 | { |
74 | kref_put(kref: &sink->refcount, release: 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(size: 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(kref: &sink->refcount); |
88 | |
89 | return sink; |
90 | |
91 | construct_fail: |
92 | kfree(objp: 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 | |