1 // SPDX-License-Identifier: GPL-2.0-only
2 // Copyright (C) 2024 Cirrus Logic, Inc. and
3 // Cirrus Logic International Semiconductor Ltd.
4
5 #include <kunit/device.h>
6 #include <kunit/test.h>
7 #include <linux/module.h>
8 #include <sound/control.h>
9 #include <sound/soc.h>
10 #include <sound/soc-card.h>
11
12 struct soc_card_test_priv {
13 struct device *card_dev;
14 struct snd_soc_card *card;
15 };
16
17 static const struct snd_kcontrol_new test_card_controls[] = {
18 SOC_SINGLE("Fee", SND_SOC_NOPM, 0, 1, 0),
19 SOC_SINGLE("Fi", SND_SOC_NOPM, 1, 1, 0),
20 SOC_SINGLE("Fo", SND_SOC_NOPM, 2, 1, 0),
21 SOC_SINGLE("Fum", SND_SOC_NOPM, 3, 1, 0),
22 SOC_SINGLE("Left Fee", SND_SOC_NOPM, 4, 1, 0),
23 SOC_SINGLE("Right Fee", SND_SOC_NOPM, 5, 1, 0),
24 SOC_SINGLE("Left Fi", SND_SOC_NOPM, 6, 1, 0),
25 SOC_SINGLE("Right Fi", SND_SOC_NOPM, 7, 1, 0),
26 SOC_SINGLE("Left Fo", SND_SOC_NOPM, 8, 1, 0),
27 SOC_SINGLE("Right Fo", SND_SOC_NOPM, 9, 1, 0),
28 SOC_SINGLE("Left Fum", SND_SOC_NOPM, 10, 1, 0),
29 SOC_SINGLE("Right Fum", SND_SOC_NOPM, 11, 1, 0),
30 };
31
test_snd_soc_card_get_kcontrol(struct kunit * test)32 static void test_snd_soc_card_get_kcontrol(struct kunit *test)
33 {
34 struct soc_card_test_priv *priv = test->priv;
35 struct snd_soc_card *card = priv->card;
36 struct snd_kcontrol *kc;
37 struct soc_mixer_control *mc;
38 int i, ret;
39
40 ret = snd_soc_add_card_controls(card, test_card_controls, ARRAY_SIZE(test_card_controls));
41 KUNIT_ASSERT_EQ(test, ret, 0);
42
43 /* Look up every control */
44 for (i = 0; i < ARRAY_SIZE(test_card_controls); ++i) {
45 kc = snd_soc_card_get_kcontrol(card, test_card_controls[i].name);
46 KUNIT_EXPECT_NOT_ERR_OR_NULL_MSG(test, kc, "Failed to find '%s'\n",
47 test_card_controls[i].name);
48 if (!kc)
49 continue;
50
51 /* Test that it is the correct control */
52 mc = (struct soc_mixer_control *)kc->private_value;
53 KUNIT_EXPECT_EQ_MSG(test, mc->shift, i, "For '%s'\n", test_card_controls[i].name);
54 }
55
56 /* Test some names that should not be found */
57 kc = snd_soc_card_get_kcontrol(card, "None");
58 KUNIT_EXPECT_NULL(test, kc);
59
60 kc = snd_soc_card_get_kcontrol(card, "Left None");
61 KUNIT_EXPECT_NULL(test, kc);
62
63 kc = snd_soc_card_get_kcontrol(card, "Left");
64 KUNIT_EXPECT_NULL(test, kc);
65
66 kc = snd_soc_card_get_kcontrol(card, NULL);
67 KUNIT_EXPECT_NULL(test, kc);
68 }
69
soc_card_test_case_init(struct kunit * test)70 static int soc_card_test_case_init(struct kunit *test)
71 {
72 struct soc_card_test_priv *priv;
73 int ret;
74
75 priv = kunit_kzalloc(test, sizeof(*priv), GFP_KERNEL);
76 if (!priv)
77 return -ENOMEM;
78
79 test->priv = priv;
80
81 priv->card = kunit_kzalloc(test, sizeof(*priv->card), GFP_KERNEL);
82 if (!priv->card)
83 return -ENOMEM;
84
85 priv->card_dev = kunit_device_register(test, "sound-soc-card-test");
86 priv->card_dev = get_device(priv->card_dev);
87 if (!priv->card_dev)
88 return -ENODEV;
89
90 priv->card->name = "soc-card-test";
91 priv->card->dev = priv->card_dev;
92 priv->card->owner = THIS_MODULE;
93
94 ret = snd_soc_register_card(priv->card);
95 if (ret) {
96 put_device(priv->card_dev);
97 return ret;
98 }
99
100 return 0;
101 }
102
soc_card_test_case_exit(struct kunit * test)103 static void soc_card_test_case_exit(struct kunit *test)
104 {
105 struct soc_card_test_priv *priv = test->priv;
106
107 if (priv->card)
108 snd_soc_unregister_card(priv->card);
109
110 if (priv->card_dev)
111 put_device(priv->card_dev);
112 }
113
114 static struct kunit_case soc_card_test_cases[] = {
115 KUNIT_CASE(test_snd_soc_card_get_kcontrol),
116 {}
117 };
118
119 static struct kunit_suite soc_card_test_suite = {
120 .name = "soc-card",
121 .test_cases = soc_card_test_cases,
122 .init = soc_card_test_case_init,
123 .exit = soc_card_test_case_exit,
124 };
125
126 kunit_test_suites(&soc_card_test_suite);
127
128 MODULE_DESCRIPTION("ASoC soc-card KUnit test");
129 MODULE_LICENSE("GPL");
130