1 /* $NetBSD: amdgpu_virtual_link_encoder.c,v 1.2 2021/12/18 23:45:06 riastradh Exp $ */
2
3 /*
4 * Copyright 2012-15 Advanced Micro Devices, Inc.
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the "Software"),
8 * to deal in the Software without restriction, including without limitation
9 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
10 * and/or sell copies of the Software, and to permit persons to whom the
11 * Software is furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
20 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
21 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
22 * OTHER DEALINGS IN THE SOFTWARE.
23 *
24 * Authors: AMD
25 *
26 */
27
28 #include <sys/cdefs.h>
29 __KERNEL_RCSID(0, "$NetBSD: amdgpu_virtual_link_encoder.c,v 1.2 2021/12/18 23:45:06 riastradh Exp $");
30
31 #include <linux/slab.h>
32
33 #include "dm_services.h"
34 #include "dm_services_types.h"
35
36 #include "virtual_link_encoder.h"
37
virtual_link_encoder_validate_output_with_stream(struct link_encoder * enc,const struct dc_stream_state * stream)38 static bool virtual_link_encoder_validate_output_with_stream(
39 struct link_encoder *enc,
40 const struct dc_stream_state *stream) { return true; }
41
virtual_link_encoder_hw_init(struct link_encoder * enc)42 static void virtual_link_encoder_hw_init(struct link_encoder *enc) {}
43
virtual_link_encoder_setup(struct link_encoder * enc,enum signal_type signal)44 static void virtual_link_encoder_setup(
45 struct link_encoder *enc,
46 enum signal_type signal) {}
47
virtual_link_encoder_enable_tmds_output(struct link_encoder * enc,enum clock_source_id clock_source,enum dc_color_depth color_depth,enum signal_type signal,uint32_t pixel_clock)48 static void virtual_link_encoder_enable_tmds_output(
49 struct link_encoder *enc,
50 enum clock_source_id clock_source,
51 enum dc_color_depth color_depth,
52 enum signal_type signal,
53 uint32_t pixel_clock) {}
54
virtual_link_encoder_enable_dp_output(struct link_encoder * enc,const struct dc_link_settings * link_settings,enum clock_source_id clock_source)55 static void virtual_link_encoder_enable_dp_output(
56 struct link_encoder *enc,
57 const struct dc_link_settings *link_settings,
58 enum clock_source_id clock_source) {}
59
virtual_link_encoder_enable_dp_mst_output(struct link_encoder * enc,const struct dc_link_settings * link_settings,enum clock_source_id clock_source)60 static void virtual_link_encoder_enable_dp_mst_output(
61 struct link_encoder *enc,
62 const struct dc_link_settings *link_settings,
63 enum clock_source_id clock_source) {}
64
virtual_link_encoder_disable_output(struct link_encoder * link_enc,enum signal_type signal)65 static void virtual_link_encoder_disable_output(
66 struct link_encoder *link_enc,
67 enum signal_type signal) {}
68
virtual_link_encoder_dp_set_lane_settings(struct link_encoder * enc,const struct link_training_settings * link_settings)69 static void virtual_link_encoder_dp_set_lane_settings(
70 struct link_encoder *enc,
71 const struct link_training_settings *link_settings) {}
72
virtual_link_encoder_dp_set_phy_pattern(struct link_encoder * enc,const struct encoder_set_dp_phy_pattern_param * param)73 static void virtual_link_encoder_dp_set_phy_pattern(
74 struct link_encoder *enc,
75 const struct encoder_set_dp_phy_pattern_param *param) {}
76
virtual_link_encoder_update_mst_stream_allocation_table(struct link_encoder * enc,const struct link_mst_stream_allocation_table * table)77 static void virtual_link_encoder_update_mst_stream_allocation_table(
78 struct link_encoder *enc,
79 const struct link_mst_stream_allocation_table *table) {}
80
virtual_link_encoder_connect_dig_be_to_fe(struct link_encoder * enc,enum engine_id engine,bool connect)81 static void virtual_link_encoder_connect_dig_be_to_fe(
82 struct link_encoder *enc,
83 enum engine_id engine,
84 bool connect) {}
85
virtual_link_encoder_destroy(struct link_encoder ** enc)86 static void virtual_link_encoder_destroy(struct link_encoder **enc)
87 {
88 kfree(*enc);
89 *enc = NULL;
90 }
91
92
93 static const struct link_encoder_funcs virtual_lnk_enc_funcs = {
94 .validate_output_with_stream =
95 virtual_link_encoder_validate_output_with_stream,
96 .hw_init = virtual_link_encoder_hw_init,
97 .setup = virtual_link_encoder_setup,
98 .enable_tmds_output = virtual_link_encoder_enable_tmds_output,
99 .enable_dp_output = virtual_link_encoder_enable_dp_output,
100 .enable_dp_mst_output = virtual_link_encoder_enable_dp_mst_output,
101 .disable_output = virtual_link_encoder_disable_output,
102 .dp_set_lane_settings = virtual_link_encoder_dp_set_lane_settings,
103 .dp_set_phy_pattern = virtual_link_encoder_dp_set_phy_pattern,
104 .update_mst_stream_allocation_table =
105 virtual_link_encoder_update_mst_stream_allocation_table,
106 .connect_dig_be_to_fe = virtual_link_encoder_connect_dig_be_to_fe,
107 .destroy = virtual_link_encoder_destroy
108 };
109
virtual_link_encoder_construct(struct link_encoder * enc,const struct encoder_init_data * init_data)110 bool virtual_link_encoder_construct(
111 struct link_encoder *enc, const struct encoder_init_data *init_data)
112 {
113 enc->funcs = &virtual_lnk_enc_funcs;
114 enc->ctx = init_data->ctx;
115 enc->id = init_data->encoder;
116
117 enc->hpd_source = init_data->hpd_source;
118 enc->connector = init_data->connector;
119
120 enc->transmitter = init_data->transmitter;
121
122 enc->output_signals = SIGNAL_TYPE_VIRTUAL;
123
124 enc->preferred_engine = ENGINE_ID_VIRTUAL;
125
126 return true;
127 }
128
129
130