1 // SPDX-License-Identifier: GPL-2.0-only
2 // Copyright (C) 2022 Cirrus Logic, Inc. and
3 // Cirrus Logic International Semiconductor Ltd.
4
5 #include <kunit/test.h>
6 #include <linux/module.h>
7 #include <sound/pcm.h>
8 #include <sound/pcm_params.h>
9 #include <sound/soc.h>
10 #include <uapi/sound/asound.h>
11
12 static const struct {
13 u32 rate;
14 snd_pcm_format_t fmt;
15 u8 channels;
16 u8 tdm_width;
17 u8 tdm_slots;
18 u8 slot_multiple;
19 u32 bclk;
20 } tdm_params_to_bclk_cases[] = {
21 /* rate fmt channels tdm_width tdm_slots slot_multiple bclk */
22
23 /* From params only */
24 { 8000, SNDRV_PCM_FORMAT_S16_LE, 1, 0, 0, 0, 128000 },
25 { 8000, SNDRV_PCM_FORMAT_S16_LE, 2, 0, 0, 0, 256000 },
26 { 8000, SNDRV_PCM_FORMAT_S24_LE, 1, 0, 0, 0, 192000 },
27 { 8000, SNDRV_PCM_FORMAT_S24_LE, 2, 0, 0, 0, 384000 },
28 { 8000, SNDRV_PCM_FORMAT_S32_LE, 1, 0, 0, 0, 256000 },
29 { 8000, SNDRV_PCM_FORMAT_S32_LE, 2, 0, 0, 0, 512000 },
30 { 44100, SNDRV_PCM_FORMAT_S16_LE, 1, 0, 0, 0, 705600 },
31 { 44100, SNDRV_PCM_FORMAT_S16_LE, 2, 0, 0, 0, 1411200 },
32 { 44100, SNDRV_PCM_FORMAT_S24_LE, 1, 0, 0, 0, 1058400 },
33 { 44100, SNDRV_PCM_FORMAT_S24_LE, 2, 0, 0, 0, 2116800 },
34 { 44100, SNDRV_PCM_FORMAT_S32_LE, 1, 0, 0, 0, 1411200 },
35 { 44100, SNDRV_PCM_FORMAT_S32_LE, 2, 0, 0, 0, 2822400 },
36 { 384000, SNDRV_PCM_FORMAT_S16_LE, 1, 0, 0, 0, 6144000 },
37 { 384000, SNDRV_PCM_FORMAT_S16_LE, 2, 0, 0, 0, 12288000 },
38 { 384000, SNDRV_PCM_FORMAT_S24_LE, 1, 0, 0, 0, 9216000 },
39 { 384000, SNDRV_PCM_FORMAT_S24_LE, 2, 0, 0, 0, 18432000 },
40 { 384000, SNDRV_PCM_FORMAT_S32_LE, 1, 0, 0, 0, 12288000 },
41 { 384000, SNDRV_PCM_FORMAT_S32_LE, 2, 0, 0, 0, 24576000 },
42
43 /* I2S from params */
44 { 8000, SNDRV_PCM_FORMAT_S16_LE, 1, 0, 0, 2, 256000 },
45 { 8000, SNDRV_PCM_FORMAT_S16_LE, 2, 0, 0, 2, 256000 },
46 { 8000, SNDRV_PCM_FORMAT_S24_LE, 1, 0, 0, 2, 384000 },
47 { 8000, SNDRV_PCM_FORMAT_S24_LE, 2, 0, 0, 2, 384000 },
48 { 8000, SNDRV_PCM_FORMAT_S32_LE, 1, 0, 0, 2, 512000 },
49 { 8000, SNDRV_PCM_FORMAT_S32_LE, 2, 0, 0, 2, 512000 },
50 { 44100, SNDRV_PCM_FORMAT_S16_LE, 1, 0, 0, 2, 1411200 },
51 { 44100, SNDRV_PCM_FORMAT_S16_LE, 2, 0, 0, 2, 1411200 },
52 { 44100, SNDRV_PCM_FORMAT_S24_LE, 1, 0, 0, 2, 2116800 },
53 { 44100, SNDRV_PCM_FORMAT_S24_LE, 2, 0, 0, 2, 2116800 },
54 { 44100, SNDRV_PCM_FORMAT_S32_LE, 1, 0, 0, 2, 2822400 },
55 { 44100, SNDRV_PCM_FORMAT_S32_LE, 2, 0, 0, 2, 2822400 },
56 { 384000, SNDRV_PCM_FORMAT_S16_LE, 1, 0, 0, 2, 12288000 },
57 { 384000, SNDRV_PCM_FORMAT_S16_LE, 2, 0, 0, 2, 12288000 },
58 { 384000, SNDRV_PCM_FORMAT_S24_LE, 1, 0, 0, 2, 18432000 },
59 { 384000, SNDRV_PCM_FORMAT_S24_LE, 2, 0, 0, 2, 18432000 },
60 { 384000, SNDRV_PCM_FORMAT_S32_LE, 1, 0, 0, 2, 24576000 },
61 { 384000, SNDRV_PCM_FORMAT_S32_LE, 2, 0, 0, 2, 24576000 },
62
63 /* Fixed 8-slot TDM, other values from params */
64 { 8000, SNDRV_PCM_FORMAT_S16_LE, 1, 0, 8, 0, 1024000 },
65 { 8000, SNDRV_PCM_FORMAT_S16_LE, 2, 0, 8, 0, 1024000 },
66 { 8000, SNDRV_PCM_FORMAT_S16_LE, 3, 0, 8, 0, 1024000 },
67 { 8000, SNDRV_PCM_FORMAT_S16_LE, 4, 0, 8, 0, 1024000 },
68 { 8000, SNDRV_PCM_FORMAT_S32_LE, 1, 0, 8, 0, 2048000 },
69 { 8000, SNDRV_PCM_FORMAT_S32_LE, 2, 0, 8, 0, 2048000 },
70 { 8000, SNDRV_PCM_FORMAT_S32_LE, 3, 0, 8, 0, 2048000 },
71 { 8000, SNDRV_PCM_FORMAT_S32_LE, 4, 0, 8, 0, 2048000 },
72 { 384000, SNDRV_PCM_FORMAT_S16_LE, 1, 0, 8, 0, 49152000 },
73 { 384000, SNDRV_PCM_FORMAT_S16_LE, 2, 0, 8, 0, 49152000 },
74 { 384000, SNDRV_PCM_FORMAT_S16_LE, 3, 0, 8, 0, 49152000 },
75 { 384000, SNDRV_PCM_FORMAT_S16_LE, 4, 0, 8, 0, 49152000 },
76 { 384000, SNDRV_PCM_FORMAT_S32_LE, 1, 0, 8, 0, 98304000 },
77 { 384000, SNDRV_PCM_FORMAT_S32_LE, 2, 0, 8, 0, 98304000 },
78 { 384000, SNDRV_PCM_FORMAT_S32_LE, 3, 0, 8, 0, 98304000 },
79 { 384000, SNDRV_PCM_FORMAT_S32_LE, 4, 0, 8, 0, 98304000 },
80
81 /* Fixed 32-bit TDM, other values from params */
82 { 8000, SNDRV_PCM_FORMAT_S16_LE, 1, 32, 0, 0, 256000 },
83 { 8000, SNDRV_PCM_FORMAT_S16_LE, 2, 32, 0, 0, 512000 },
84 { 8000, SNDRV_PCM_FORMAT_S16_LE, 3, 32, 0, 0, 768000 },
85 { 8000, SNDRV_PCM_FORMAT_S16_LE, 4, 32, 0, 0, 1024000 },
86 { 8000, SNDRV_PCM_FORMAT_S32_LE, 1, 32, 0, 0, 256000 },
87 { 8000, SNDRV_PCM_FORMAT_S32_LE, 2, 32, 0, 0, 512000 },
88 { 8000, SNDRV_PCM_FORMAT_S32_LE, 3, 32, 0, 0, 768000 },
89 { 8000, SNDRV_PCM_FORMAT_S32_LE, 4, 32, 0, 0, 1024000 },
90 { 384000, SNDRV_PCM_FORMAT_S16_LE, 1, 32, 0, 0, 12288000 },
91 { 384000, SNDRV_PCM_FORMAT_S16_LE, 2, 32, 0, 0, 24576000 },
92 { 384000, SNDRV_PCM_FORMAT_S16_LE, 3, 32, 0, 0, 36864000 },
93 { 384000, SNDRV_PCM_FORMAT_S16_LE, 4, 32, 0, 0, 49152000 },
94 { 384000, SNDRV_PCM_FORMAT_S32_LE, 1, 32, 0, 0, 12288000 },
95 { 384000, SNDRV_PCM_FORMAT_S32_LE, 2, 32, 0, 0, 24576000 },
96 { 384000, SNDRV_PCM_FORMAT_S32_LE, 3, 32, 0, 0, 36864000 },
97 { 384000, SNDRV_PCM_FORMAT_S32_LE, 4, 32, 0, 0, 49152000 },
98
99 /* Fixed 6-slot 24-bit TDM, other values from params */
100 { 8000, SNDRV_PCM_FORMAT_S16_LE, 1, 24, 6, 0, 1152000 },
101 { 8000, SNDRV_PCM_FORMAT_S16_LE, 2, 24, 6, 0, 1152000 },
102 { 8000, SNDRV_PCM_FORMAT_S16_LE, 3, 24, 6, 0, 1152000 },
103 { 8000, SNDRV_PCM_FORMAT_S16_LE, 4, 24, 6, 0, 1152000 },
104 { 8000, SNDRV_PCM_FORMAT_S24_LE, 1, 24, 6, 0, 1152000 },
105 { 8000, SNDRV_PCM_FORMAT_S24_LE, 2, 24, 6, 0, 1152000 },
106 { 8000, SNDRV_PCM_FORMAT_S24_LE, 3, 24, 6, 0, 1152000 },
107 { 8000, SNDRV_PCM_FORMAT_S24_LE, 4, 24, 6, 0, 1152000 },
108 { 192000, SNDRV_PCM_FORMAT_S16_LE, 1, 24, 6, 0, 27648000 },
109 { 192000, SNDRV_PCM_FORMAT_S16_LE, 2, 24, 6, 0, 27648000 },
110 { 192000, SNDRV_PCM_FORMAT_S16_LE, 3, 24, 6, 0, 27648000 },
111 { 192000, SNDRV_PCM_FORMAT_S16_LE, 4, 24, 6, 0, 27648000 },
112 { 192000, SNDRV_PCM_FORMAT_S24_LE, 1, 24, 6, 0, 27648000 },
113 { 192000, SNDRV_PCM_FORMAT_S24_LE, 2, 24, 6, 0, 27648000 },
114 { 192000, SNDRV_PCM_FORMAT_S24_LE, 3, 24, 6, 0, 27648000 },
115 { 192000, SNDRV_PCM_FORMAT_S24_LE, 4, 24, 6, 0, 27648000 },
116 };
117
118 static void test_tdm_params_to_bclk_one(struct kunit *test,
119 unsigned int rate, snd_pcm_format_t fmt,
120 unsigned int channels,
121 unsigned int tdm_width, unsigned int tdm_slots,
122 unsigned int slot_multiple,
123 unsigned int expected_bclk)
124 {
125 struct snd_pcm_hw_params params;
126 int got_bclk;
127
128 _snd_pcm_hw_params_any(¶ms);
129 snd_mask_none(hw_param_mask(¶ms, SNDRV_PCM_HW_PARAM_FORMAT));
130 hw_param_interval(¶ms, SNDRV_PCM_HW_PARAM_RATE)->min = rate;
131 hw_param_interval(¶ms, SNDRV_PCM_HW_PARAM_RATE)->max = rate;
132 hw_param_interval(¶ms, SNDRV_PCM_HW_PARAM_CHANNELS)->min = channels;
133 hw_param_interval(¶ms, SNDRV_PCM_HW_PARAM_CHANNELS)->max = channels;
134 params_set_format(¶ms, fmt);
135
136 got_bclk = snd_soc_tdm_params_to_bclk(¶ms, tdm_width, tdm_slots, slot_multiple);
137 pr_debug("%s: r=%u sb=%u ch=%u tw=%u ts=%u sm=%u expected=%u got=%d\n",
138 __func__,
139 rate, params_width(¶ms), channels, tdm_width, tdm_slots, slot_multiple,
140 expected_bclk, got_bclk);
141 KUNIT_ASSERT_EQ(test, expected_bclk, (unsigned int)got_bclk);
142 }
143
144 static void test_tdm_params_to_bclk(struct kunit *test)
145 {
146 int i;
147
148 for (i = 0; i < ARRAY_SIZE(tdm_params_to_bclk_cases); ++i) {
149 test_tdm_params_to_bclk_one(test,
150 tdm_params_to_bclk_cases[i].rate,
151 tdm_params_to_bclk_cases[i].fmt,
152 tdm_params_to_bclk_cases[i].channels,
153 tdm_params_to_bclk_cases[i].tdm_width,
154 tdm_params_to_bclk_cases[i].tdm_slots,
155 tdm_params_to_bclk_cases[i].slot_multiple,
156 tdm_params_to_bclk_cases[i].bclk);
157
158 if (tdm_params_to_bclk_cases[i].slot_multiple > 0)
159 continue;
160
161 /* Slot multiple 1 should have the same effect as multiple 0 */
162 test_tdm_params_to_bclk_one(test,
163 tdm_params_to_bclk_cases[i].rate,
164 tdm_params_to_bclk_cases[i].fmt,
165 tdm_params_to_bclk_cases[i].channels,
166 tdm_params_to_bclk_cases[i].tdm_width,
167 tdm_params_to_bclk_cases[i].tdm_slots,
168 1,
169 tdm_params_to_bclk_cases[i].bclk);
170 }
171 }
172
173 static void test_snd_soc_params_to_bclk_one(struct kunit *test,
174 unsigned int rate, snd_pcm_format_t fmt,
175 unsigned int channels,
176 unsigned int expected_bclk)
177 {
178 struct snd_pcm_hw_params params;
179 int got_bclk;
180
181 _snd_pcm_hw_params_any(¶ms);
182 snd_mask_none(hw_param_mask(¶ms, SNDRV_PCM_HW_PARAM_FORMAT));
183 hw_param_interval(¶ms, SNDRV_PCM_HW_PARAM_RATE)->min = rate;
184 hw_param_interval(¶ms, SNDRV_PCM_HW_PARAM_RATE)->max = rate;
185 hw_param_interval(¶ms, SNDRV_PCM_HW_PARAM_CHANNELS)->min = channels;
186 hw_param_interval(¶ms, SNDRV_PCM_HW_PARAM_CHANNELS)->max = channels;
187 params_set_format(¶ms, fmt);
188
189 got_bclk = snd_soc_params_to_bclk(¶ms);
190 pr_debug("%s: r=%u sb=%u ch=%u expected=%u got=%d\n",
191 __func__,
192 rate, params_width(¶ms), channels, expected_bclk, got_bclk);
193 KUNIT_ASSERT_EQ(test, expected_bclk, (unsigned int)got_bclk);
194 }
195
196 static void test_snd_soc_params_to_bclk(struct kunit *test)
197 {
198 int i;
199
200 for (i = 0; i < ARRAY_SIZE(tdm_params_to_bclk_cases); ++i) {
201 /*
202 * snd_soc_params_to_bclk() is all the test cases where
203 * snd_pcm_hw_params values are not overridden.
204 */
205 if (tdm_params_to_bclk_cases[i].tdm_width |
206 tdm_params_to_bclk_cases[i].tdm_slots |
207 tdm_params_to_bclk_cases[i].slot_multiple)
208 continue;
209
210 test_snd_soc_params_to_bclk_one(test,
211 tdm_params_to_bclk_cases[i].rate,
212 tdm_params_to_bclk_cases[i].fmt,
213 tdm_params_to_bclk_cases[i].channels,
214 tdm_params_to_bclk_cases[i].bclk);
215 }
216 }
217
218 static struct kunit_case soc_utils_test_cases[] = {
219 KUNIT_CASE(test_tdm_params_to_bclk),
220 KUNIT_CASE(test_snd_soc_params_to_bclk),
221 {}
222 };
223
224 static struct kunit_suite soc_utils_test_suite = {
225 .name = "soc-utils",
226 .test_cases = soc_utils_test_cases,
227 };
228
229 kunit_test_suites(&soc_utils_test_suite);
230
231 MODULE_DESCRIPTION("ASoC soc-utils kunit test");
232 MODULE_LICENSE("GPL");
233
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