1/*
2 * Copyright 2020 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 "dc/dc_stat.h"
26#include "dmub/dmub_srv_stat.h"
27#include "dc_dmub_srv.h"
28
29/**
30 * DOC: DC STAT Interface
31 *
32 * These interfaces are called without acquiring DAL and DC locks.
33 * Hence, there is limitations on whese interfaces can access. Only
34 * variables exclusively defined for these interfaces can be modified.
35 */
36
37/**
38 * dc_stat_get_dmub_notification
39 *
40 * Calls dmub layer to retrieve dmub notification
41 *
42 * @dc: dc structure
43 * @notify: dmub notification structure
44 *
45 * Returns
46 * None
47 */
48void dc_stat_get_dmub_notification(const struct dc *dc, struct dmub_notification *notify)
49{
50 /**
51 * This function is called without dal and dc locks, so
52 * we shall not modify any dc, dc_dmub_srv or dmub variables
53 * except variables exclusively accessed by this function
54 */
55 struct dmub_srv *dmub = dc->ctx->dmub_srv->dmub;
56 enum dmub_status status;
57
58 status = dmub_srv_stat_get_notification(dmub, notify);
59 ASSERT(status == DMUB_STATUS_OK);
60
61 /* For HPD/HPD RX, convert dpia port index into link index */
62 if (notify->type == DMUB_NOTIFICATION_HPD ||
63 notify->type == DMUB_NOTIFICATION_HPD_IRQ ||
64 notify->type == DMUB_NOTIFICATION_AUX_REPLY ||
65 notify->type == DMUB_NOTIFICATION_DPIA_NOTIFICATION ||
66 notify->type == DMUB_NOTIFICATION_SET_CONFIG_REPLY) {
67 notify->link_index =
68 get_link_index_from_dpia_port_index(dc, dpia_port_index: notify->instance);
69 }
70}
71
72/**
73 * dc_stat_get_dmub_dataout
74 *
75 * Calls dmub layer to retrieve dmub gpint dataout
76 *
77 * @dc: dc structure
78 * @dataout: dmub gpint dataout
79 *
80 * Returns
81 * None
82 */
83void dc_stat_get_dmub_dataout(const struct dc *dc, uint32_t *dataout)
84{
85 struct dmub_srv *dmub = dc->ctx->dmub_srv->dmub;
86 enum dmub_status status;
87
88 status = dmub_srv_get_gpint_dataout(dmub, dataout);
89 ASSERT(status == DMUB_STATUS_OK);
90}
91

source code of linux/drivers/gpu/drm/amd/display/dc/core/dc_stat.c