1/*
2 * Copyright 2022 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#include "link_hwss_dpia.h"
26#include "core_types.h"
27#include "link_hwss_dio.h"
28#include "link_enc_cfg.h"
29
30#define DC_LOGGER \
31 link->ctx->logger
32#define DC_LOGGER_INIT(logger)
33
34static void update_dpia_stream_allocation_table(struct dc_link *link,
35 const struct link_resource *link_res,
36 const struct link_mst_stream_allocation_table *table)
37{
38 struct link_encoder *link_enc = link_enc_cfg_get_link_enc(link);
39 static enum dc_status status;
40 uint8_t mst_alloc_slots = 0, prev_mst_slots_in_use = 0xFF;
41 int i;
42 DC_LOGGER_INIT(link->ctx->logger);
43
44 for (i = 0; i < table->stream_count; i++)
45 mst_alloc_slots += table->stream_allocations[i].slot_count;
46
47 status = dc_process_dmub_set_mst_slots(dc: link->dc, link_index: link->link_index,
48 mst_alloc_slots, mst_slots_in_use: &prev_mst_slots_in_use);
49 ASSERT(status == DC_OK);
50 DC_LOG_MST("dpia : status[%d]: alloc_slots[%d]: used_slots[%d]\n",
51 status, mst_alloc_slots, prev_mst_slots_in_use);
52
53 ASSERT(link_enc);
54 link_enc->funcs->update_mst_stream_allocation_table(link_enc, table);
55}
56
57static const struct link_hwss dpia_link_hwss = {
58 .setup_stream_encoder = setup_dio_stream_encoder,
59 .reset_stream_encoder = reset_dio_stream_encoder,
60 .setup_stream_attribute = setup_dio_stream_attribute,
61 .disable_link_output = disable_dio_link_output,
62 .setup_audio_output = setup_dio_audio_output,
63 .enable_audio_packet = enable_dio_audio_packet,
64 .disable_audio_packet = disable_dio_audio_packet,
65 .ext = {
66 .set_throttled_vcp_size = set_dio_throttled_vcp_size,
67 .enable_dp_link_output = enable_dio_dp_link_output,
68 .set_dp_link_test_pattern = set_dio_dp_link_test_pattern,
69 .set_dp_lane_settings = set_dio_dp_lane_settings,
70 .update_stream_allocation_table = update_dpia_stream_allocation_table,
71 },
72};
73
74bool can_use_dpia_link_hwss(const struct dc_link *link,
75 const struct link_resource *link_res)
76{
77 return link->is_dig_mapping_flexible &&
78 link->dc->res_pool->funcs->link_encs_assign;
79}
80
81const struct link_hwss *get_dpia_link_hwss(void)
82{
83 return &dpia_link_hwss;
84}
85

source code of linux/drivers/gpu/drm/amd/display/dc/link/hwss/link_hwss_dpia.c