Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
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 <linux/slab.h>
27
28#include "dm_services.h"
29#include "dm_services_types.h"
30
31#include "virtual_link_encoder.h"
32
33static bool virtual_link_encoder_validate_output_with_stream(
34 struct link_encoder *enc,
35 const struct dc_stream_state *stream) { return true; }
36
37static void virtual_link_encoder_hw_init(struct link_encoder *enc) {}
38
39static void virtual_link_encoder_setup(
40 struct link_encoder *enc,
41 enum signal_type signal) {}
42
43static void virtual_link_encoder_enable_tmds_output(
44 struct link_encoder *enc,
45 enum clock_source_id clock_source,
46 enum dc_color_depth color_depth,
47 enum signal_type signal,
48 uint32_t pixel_clock) {}
49
50static void virtual_link_encoder_enable_dp_output(
51 struct link_encoder *enc,
52 const struct dc_link_settings *link_settings,
53 enum clock_source_id clock_source) {}
54
55static void virtual_link_encoder_enable_dp_mst_output(
56 struct link_encoder *enc,
57 const struct dc_link_settings *link_settings,
58 enum clock_source_id clock_source) {}
59
60static void virtual_link_encoder_disable_output(
61 struct link_encoder *link_enc,
62 enum signal_type signal) {}
63
64static void virtual_link_encoder_dp_set_lane_settings(
65 struct link_encoder *enc,
66 const struct dc_link_settings *link_settings,
67 const struct dc_lane_settings lane_settings[LANE_COUNT_DP_MAX]) {}
68
69static void virtual_link_encoder_dp_set_phy_pattern(
70 struct link_encoder *enc,
71 const struct encoder_set_dp_phy_pattern_param *param) {}
72
73static void virtual_link_encoder_update_mst_stream_allocation_table(
74 struct link_encoder *enc,
75 const struct link_mst_stream_allocation_table *table) {}
76
77static void virtual_link_encoder_connect_dig_be_to_fe(
78 struct link_encoder *enc,
79 enum engine_id engine,
80 bool connect) {}
81
82static void virtual_link_encoder_destroy(struct link_encoder **enc)
83{
84 kfree(*enc);
85 *enc = NULL;
86}
87
88static void virtual_link_encoder_get_max_link_cap(struct link_encoder *enc,
89 struct dc_link_settings *link_settings)
90{
91 /* Set Default link settings */
92 struct dc_link_settings max_link_cap = {LANE_COUNT_FOUR, LINK_RATE_HIGH,
93 LINK_SPREAD_05_DOWNSPREAD_30KHZ, false, 0};
94 *link_settings = max_link_cap;
95}
96
97static const struct link_encoder_funcs virtual_lnk_enc_funcs = {
98 .validate_output_with_stream =
99 virtual_link_encoder_validate_output_with_stream,
100 .hw_init = virtual_link_encoder_hw_init,
101 .setup = virtual_link_encoder_setup,
102 .enable_tmds_output = virtual_link_encoder_enable_tmds_output,
103 .enable_dp_output = virtual_link_encoder_enable_dp_output,
104 .enable_dp_mst_output = virtual_link_encoder_enable_dp_mst_output,
105 .disable_output = virtual_link_encoder_disable_output,
106 .get_max_link_cap = virtual_link_encoder_get_max_link_cap,
107 .dp_set_lane_settings = virtual_link_encoder_dp_set_lane_settings,
108 .dp_set_phy_pattern = virtual_link_encoder_dp_set_phy_pattern,
109 .update_mst_stream_allocation_table =
110 virtual_link_encoder_update_mst_stream_allocation_table,
111 .connect_dig_be_to_fe = virtual_link_encoder_connect_dig_be_to_fe,
112 .destroy = virtual_link_encoder_destroy
113};
114
115bool virtual_link_encoder_construct(
116 struct link_encoder *enc, const struct encoder_init_data *init_data)
117{
118 enc->funcs = &virtual_lnk_enc_funcs;
119 enc->ctx = init_data->ctx;
120 enc->id = init_data->encoder;
121
122 enc->hpd_source = init_data->hpd_source;
123 enc->connector = init_data->connector;
124
125 enc->transmitter = init_data->transmitter;
126
127 enc->output_signals = SIGNAL_TYPE_VIRTUAL;
128
129 enc->preferred_engine = ENGINE_ID_VIRTUAL;
130
131 return true;
132}
133
134