1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
|
// SPDX-License-Identifier: GPL-2.0 OR MIT
/*
* KUnit tests for amdgpu_dm_replay.c
*
* Copyright 2026 Advanced Micro Devices, Inc.
*/
#include <kunit/test.h>
#include "dc.h"
#include "amdgpu_mode.h"
#include "amdgpu_dm.h"
/* Extern declaration for the function under test */
extern bool amdgpu_dm_link_supports_replay(struct dc_link *link,
struct amdgpu_dm_connector *aconnector);
/*
* Helper: allocate a dc_link, amdgpu_dm_connector, and dm_connector_state
* wired up so that to_dm_connector_state(aconnector->base.state) works.
*/
struct replay_test_ctx {
struct dc_link *link;
struct amdgpu_dm_connector *aconnector;
struct dm_connector_state *dm_state;
};
static struct replay_test_ctx *alloc_replay_ctx(struct kunit *test)
{
struct replay_test_ctx *ctx;
ctx = kunit_kzalloc(test, sizeof(*ctx), GFP_KERNEL);
KUNIT_ASSERT_NOT_NULL(test, ctx);
ctx->link = kunit_kzalloc(test, sizeof(*ctx->link), GFP_KERNEL);
KUNIT_ASSERT_NOT_NULL(test, ctx->link);
ctx->aconnector = kunit_kzalloc(test, sizeof(*ctx->aconnector), GFP_KERNEL);
KUNIT_ASSERT_NOT_NULL(test, ctx->aconnector);
ctx->dm_state = kunit_kzalloc(test, sizeof(*ctx->dm_state), GFP_KERNEL);
KUNIT_ASSERT_NOT_NULL(test, ctx->dm_state);
/* Wire connector state so to_dm_connector_state() works */
ctx->aconnector->base.state = &ctx->dm_state->base;
return ctx;
}
/*
* Helper: set all conditions for replay support to pass so individual
* tests can disable one condition at a time.
*/
static void set_all_replay_caps(struct replay_test_ctx *ctx)
{
ctx->dm_state->freesync_capable = true;
ctx->aconnector->vsdb_info.replay_mode = true;
ctx->link->dpcd_caps.edp_rev = EDP_REVISION_13;
ctx->link->dpcd_caps.alpm_caps.bits.AUX_WAKE_ALPM_CAP = 1;
ctx->link->dpcd_caps.adaptive_sync_caps.dp_adap_sync_caps.bits.ADAPTIVE_SYNC_SDP_SUPPORT = 1;
ctx->link->dpcd_caps.pr_info.pixel_deviation_per_line = 1;
ctx->link->dpcd_caps.pr_info.max_deviation_line = 1;
}
/* Tests for amdgpu_dm_link_supports_replay() — all caps met */
static void dm_test_replay_supports_all_caps(struct kunit *test)
{
struct replay_test_ctx *ctx = alloc_replay_ctx(test);
set_all_replay_caps(ctx);
KUNIT_EXPECT_TRUE(test,
amdgpu_dm_link_supports_replay(ctx->link, ctx->aconnector));
}
/* Tests for amdgpu_dm_link_supports_replay() — freesync not capable */
static void dm_test_replay_no_freesync(struct kunit *test)
{
struct replay_test_ctx *ctx = alloc_replay_ctx(test);
set_all_replay_caps(ctx);
ctx->dm_state->freesync_capable = false;
KUNIT_EXPECT_FALSE(test,
amdgpu_dm_link_supports_replay(ctx->link, ctx->aconnector));
}
/* Tests for amdgpu_dm_link_supports_replay() — no replay mode in VSDB */
static void dm_test_replay_no_vsdb_replay_mode(struct kunit *test)
{
struct replay_test_ctx *ctx = alloc_replay_ctx(test);
set_all_replay_caps(ctx);
ctx->aconnector->vsdb_info.replay_mode = false;
KUNIT_EXPECT_FALSE(test,
amdgpu_dm_link_supports_replay(ctx->link, ctx->aconnector));
}
/* Tests for amdgpu_dm_link_supports_replay() — eDP revision too low */
static void dm_test_replay_edp_rev_too_low(struct kunit *test)
{
struct replay_test_ctx *ctx = alloc_replay_ctx(test);
set_all_replay_caps(ctx);
ctx->link->dpcd_caps.edp_rev = EDP_REVISION_12;
KUNIT_EXPECT_FALSE(test,
amdgpu_dm_link_supports_replay(ctx->link, ctx->aconnector));
}
/* Tests for amdgpu_dm_link_supports_replay() — no ALPM AUX wake cap */
static void dm_test_replay_no_alpm_aux_wake(struct kunit *test)
{
struct replay_test_ctx *ctx = alloc_replay_ctx(test);
set_all_replay_caps(ctx);
ctx->link->dpcd_caps.alpm_caps.bits.AUX_WAKE_ALPM_CAP = 0;
KUNIT_EXPECT_FALSE(test,
amdgpu_dm_link_supports_replay(ctx->link, ctx->aconnector));
}
/* Tests for amdgpu_dm_link_supports_replay() — no adaptive sync SDP */
static void dm_test_replay_no_adaptive_sync_sdp(struct kunit *test)
{
struct replay_test_ctx *ctx = alloc_replay_ctx(test);
set_all_replay_caps(ctx);
ctx->link->dpcd_caps.adaptive_sync_caps.dp_adap_sync_caps.bits.ADAPTIVE_SYNC_SDP_SUPPORT = 0;
KUNIT_EXPECT_FALSE(test,
amdgpu_dm_link_supports_replay(ctx->link, ctx->aconnector));
}
/* Tests for amdgpu_dm_link_supports_replay() — zero pixel deviation */
static void dm_test_replay_zero_pixel_deviation(struct kunit *test)
{
struct replay_test_ctx *ctx = alloc_replay_ctx(test);
set_all_replay_caps(ctx);
ctx->link->dpcd_caps.pr_info.pixel_deviation_per_line = 0;
KUNIT_EXPECT_FALSE(test,
amdgpu_dm_link_supports_replay(ctx->link, ctx->aconnector));
}
/* Tests for amdgpu_dm_link_supports_replay() — zero max deviation line */
static void dm_test_replay_zero_max_deviation_line(struct kunit *test)
{
struct replay_test_ctx *ctx = alloc_replay_ctx(test);
set_all_replay_caps(ctx);
ctx->link->dpcd_caps.pr_info.max_deviation_line = 0;
KUNIT_EXPECT_FALSE(test,
amdgpu_dm_link_supports_replay(ctx->link, ctx->aconnector));
}
/* Tests for amdgpu_dm_link_supports_replay() — both deviation fields zero */
static void dm_test_replay_both_deviations_zero(struct kunit *test)
{
struct replay_test_ctx *ctx = alloc_replay_ctx(test);
set_all_replay_caps(ctx);
ctx->link->dpcd_caps.pr_info.pixel_deviation_per_line = 0;
ctx->link->dpcd_caps.pr_info.max_deviation_line = 0;
KUNIT_EXPECT_FALSE(test,
amdgpu_dm_link_supports_replay(ctx->link, ctx->aconnector));
}
/* End of tests for amdgpu_dm_link_supports_replay() */
static struct kunit_case dm_replay_test_cases[] = {
KUNIT_CASE(dm_test_replay_supports_all_caps),
KUNIT_CASE(dm_test_replay_no_freesync),
KUNIT_CASE(dm_test_replay_no_vsdb_replay_mode),
KUNIT_CASE(dm_test_replay_edp_rev_too_low),
KUNIT_CASE(dm_test_replay_no_alpm_aux_wake),
KUNIT_CASE(dm_test_replay_no_adaptive_sync_sdp),
KUNIT_CASE(dm_test_replay_zero_pixel_deviation),
KUNIT_CASE(dm_test_replay_zero_max_deviation_line),
KUNIT_CASE(dm_test_replay_both_deviations_zero),
{}
};
static struct kunit_suite dm_replay_test_suite = {
.name = "amdgpu_dm_replay",
.test_cases = dm_replay_test_cases,
};
kunit_test_suite(dm_replay_test_suite);
MODULE_LICENSE("Dual MIT/GPL");
MODULE_DESCRIPTION("KUnit tests for amdgpu_dm_replay");
MODULE_AUTHOR("AMD");
|
