sound/soc/soc-utils-test.c

0001 // SPDX-License-Identifier: GPL-2.0-only
0002 // Copyright (C) 2022 Cirrus Logic, Inc. and
0003 //                    Cirrus Logic International Semiconductor Ltd.
0004
0005 #include <kunit/test.h>
0006 #include <linux/module.h>
0007 #include <sound/pcm.h>
0008 #include <sound/pcm_params.h>
0009 #include <sound/soc.h>
0010 #include <uapi/sound/asound.h>
0011
0012 static const struct {
0013     u32 rate;
0014     snd_pcm_format_t fmt;
0015     u8 channels;
0016     u8 tdm_width;
0017     u8 tdm_slots;
0018     u8 slot_multiple;
0019     u32 bclk;
0020 } tdm_params_to_bclk_cases[] = {
0021     /* rate     fmt    channels tdm_width tdm_slots slot_multiple bclk */
0022
0023     /* From params only */
0024     {   8000,  SNDRV_PCM_FORMAT_S16_LE, 1,  0,  0,  0,    128000 },
0025     {   8000,  SNDRV_PCM_FORMAT_S16_LE, 2,  0,  0,  0,    256000 },
0026     {   8000,  SNDRV_PCM_FORMAT_S24_LE, 1,  0,  0,  0,    192000 },
0027     {   8000,  SNDRV_PCM_FORMAT_S24_LE, 2,  0,  0,  0,    384000 },
0028     {   8000,  SNDRV_PCM_FORMAT_S32_LE, 1,  0,  0,  0,    256000 },
0029     {   8000,  SNDRV_PCM_FORMAT_S32_LE, 2,  0,  0,  0,    512000 },
0030     {  44100,  SNDRV_PCM_FORMAT_S16_LE, 1,  0,  0,  0,    705600 },
0031     {  44100,  SNDRV_PCM_FORMAT_S16_LE, 2,  0,  0,  0,   1411200 },
0032     {  44100,  SNDRV_PCM_FORMAT_S24_LE, 1,  0,  0,  0,   1058400 },
0033     {  44100,  SNDRV_PCM_FORMAT_S24_LE, 2,  0,  0,  0,   2116800 },
0034     {  44100,  SNDRV_PCM_FORMAT_S32_LE, 1,  0,  0,  0,   1411200 },
0035     {  44100,  SNDRV_PCM_FORMAT_S32_LE, 2,  0,  0,  0,   2822400 },
0036     { 384000,  SNDRV_PCM_FORMAT_S16_LE, 1,  0,  0,  0,   6144000 },
0037     { 384000,  SNDRV_PCM_FORMAT_S16_LE, 2,  0,  0,  0,  12288000 },
0038     { 384000,  SNDRV_PCM_FORMAT_S24_LE, 1,  0,  0,  0,   9216000 },
0039     { 384000,  SNDRV_PCM_FORMAT_S24_LE, 2,  0,  0,  0,  18432000 },
0040     { 384000,  SNDRV_PCM_FORMAT_S32_LE, 1,  0,  0,  0,  12288000 },
0041     { 384000,  SNDRV_PCM_FORMAT_S32_LE, 2,  0,  0,  0,  24576000 },
0042
0043     /* I2S from params */
0044     {   8000,  SNDRV_PCM_FORMAT_S16_LE, 1,  0,  0,  2,    256000 },
0045     {   8000,  SNDRV_PCM_FORMAT_S16_LE, 2,  0,  0,  2,    256000 },
0046     {   8000,  SNDRV_PCM_FORMAT_S24_LE, 1,  0,  0,  2,    384000 },
0047     {   8000,  SNDRV_PCM_FORMAT_S24_LE, 2,  0,  0,  2,    384000 },
0048     {   8000,  SNDRV_PCM_FORMAT_S32_LE, 1,  0,  0,  2,    512000 },
0049     {   8000,  SNDRV_PCM_FORMAT_S32_LE, 2,  0,  0,  2,    512000 },
0050     {  44100,  SNDRV_PCM_FORMAT_S16_LE, 1,  0,  0,  2,   1411200 },
0051     {  44100,  SNDRV_PCM_FORMAT_S16_LE, 2,  0,  0,  2,   1411200 },
0052     {  44100,  SNDRV_PCM_FORMAT_S24_LE, 1,  0,  0,  2,   2116800 },
0053     {  44100,  SNDRV_PCM_FORMAT_S24_LE, 2,  0,  0,  2,   2116800 },
0054     {  44100,  SNDRV_PCM_FORMAT_S32_LE, 1,  0,  0,  2,   2822400 },
0055     {  44100,  SNDRV_PCM_FORMAT_S32_LE, 2,  0,  0,  2,   2822400 },
0056     { 384000,  SNDRV_PCM_FORMAT_S16_LE, 1,  0,  0,  2,  12288000 },
0057     { 384000,  SNDRV_PCM_FORMAT_S16_LE, 2,  0,  0,  2,  12288000 },
0058     { 384000,  SNDRV_PCM_FORMAT_S24_LE, 1,  0,  0,  2,  18432000 },
0059     { 384000,  SNDRV_PCM_FORMAT_S24_LE, 2,  0,  0,  2,  18432000 },
0060     { 384000,  SNDRV_PCM_FORMAT_S32_LE, 1,  0,  0,  2,  24576000 },
0061     { 384000,  SNDRV_PCM_FORMAT_S32_LE, 2,  0,  0,  2,  24576000 },
0062
0063     /* Fixed 8-slot TDM, other values from params */
0064     {   8000,  SNDRV_PCM_FORMAT_S16_LE, 1,  0,  8,  0,   1024000 },
0065     {   8000,  SNDRV_PCM_FORMAT_S16_LE, 2,  0,  8,  0,   1024000 },
0066     {   8000,  SNDRV_PCM_FORMAT_S16_LE, 3,  0,  8,  0,   1024000 },
0067     {   8000,  SNDRV_PCM_FORMAT_S16_LE, 4,  0,  8,  0,   1024000 },
0068     {   8000,  SNDRV_PCM_FORMAT_S32_LE, 1,  0,  8,  0,   2048000 },
0069     {   8000,  SNDRV_PCM_FORMAT_S32_LE, 2,  0,  8,  0,   2048000 },
0070     {   8000,  SNDRV_PCM_FORMAT_S32_LE, 3,  0,  8,  0,   2048000 },
0071     {   8000,  SNDRV_PCM_FORMAT_S32_LE, 4,  0,  8,  0,   2048000 },
0072     { 384000,  SNDRV_PCM_FORMAT_S16_LE, 1,  0,  8,  0,  49152000 },
0073     { 384000,  SNDRV_PCM_FORMAT_S16_LE, 2,  0,  8,  0,  49152000 },
0074     { 384000,  SNDRV_PCM_FORMAT_S16_LE, 3,  0,  8,  0,  49152000 },
0075     { 384000,  SNDRV_PCM_FORMAT_S16_LE, 4,  0,  8,  0,  49152000 },
0076     { 384000,  SNDRV_PCM_FORMAT_S32_LE, 1,  0,  8,  0,  98304000 },
0077     { 384000,  SNDRV_PCM_FORMAT_S32_LE, 2,  0,  8,  0,  98304000 },
0078     { 384000,  SNDRV_PCM_FORMAT_S32_LE, 3,  0,  8,  0,  98304000 },
0079     { 384000,  SNDRV_PCM_FORMAT_S32_LE, 4,  0,  8,  0,  98304000 },
0080
0081     /* Fixed 32-bit TDM, other values from params */
0082     {   8000,  SNDRV_PCM_FORMAT_S16_LE, 1,  32, 0,  0,    256000 },
0083     {   8000,  SNDRV_PCM_FORMAT_S16_LE, 2,  32, 0,  0,    512000 },
0084     {   8000,  SNDRV_PCM_FORMAT_S16_LE, 3,  32, 0,  0,    768000 },
0085     {   8000,  SNDRV_PCM_FORMAT_S16_LE, 4,  32, 0,  0,   1024000 },
0086     {   8000,  SNDRV_PCM_FORMAT_S32_LE, 1,  32, 0,  0,    256000 },
0087     {   8000,  SNDRV_PCM_FORMAT_S32_LE, 2,  32, 0,  0,    512000 },
0088     {   8000,  SNDRV_PCM_FORMAT_S32_LE, 3,  32, 0,  0,    768000 },
0089     {   8000,  SNDRV_PCM_FORMAT_S32_LE, 4,  32, 0,  0,   1024000 },
0090     { 384000,  SNDRV_PCM_FORMAT_S16_LE, 1,  32, 0,  0,  12288000 },
0091     { 384000,  SNDRV_PCM_FORMAT_S16_LE, 2,  32, 0,  0,  24576000 },
0092     { 384000,  SNDRV_PCM_FORMAT_S16_LE, 3,  32, 0,  0,  36864000 },
0093     { 384000,  SNDRV_PCM_FORMAT_S16_LE, 4,  32, 0,  0,  49152000 },
0094     { 384000,  SNDRV_PCM_FORMAT_S32_LE, 1,  32, 0,  0,  12288000 },
0095     { 384000,  SNDRV_PCM_FORMAT_S32_LE, 2,  32, 0,  0,  24576000 },
0096     { 384000,  SNDRV_PCM_FORMAT_S32_LE, 3,  32, 0,  0,  36864000 },
0097     { 384000,  SNDRV_PCM_FORMAT_S32_LE, 4,  32, 0,  0,  49152000 },
0098
0099     /* Fixed 6-slot 24-bit TDM, other values from params */
0100     {   8000,  SNDRV_PCM_FORMAT_S16_LE, 1,  24, 6,  0,   1152000 },
0101     {   8000,  SNDRV_PCM_FORMAT_S16_LE, 2,  24, 6,  0,   1152000 },
0102     {   8000,  SNDRV_PCM_FORMAT_S16_LE, 3,  24, 6,  0,   1152000 },
0103     {   8000,  SNDRV_PCM_FORMAT_S16_LE, 4,  24, 6,  0,   1152000 },
0104     {   8000,  SNDRV_PCM_FORMAT_S24_LE, 1,  24, 6,  0,   1152000 },
0105     {   8000,  SNDRV_PCM_FORMAT_S24_LE, 2,  24, 6,  0,   1152000 },
0106     {   8000,  SNDRV_PCM_FORMAT_S24_LE, 3,  24, 6,  0,   1152000 },
0107     {   8000,  SNDRV_PCM_FORMAT_S24_LE, 4,  24, 6,  0,   1152000 },
0108     { 192000,  SNDRV_PCM_FORMAT_S16_LE, 1,  24, 6,  0,  27648000 },
0109     { 192000,  SNDRV_PCM_FORMAT_S16_LE, 2,  24, 6,  0,  27648000 },
0110     { 192000,  SNDRV_PCM_FORMAT_S16_LE, 3,  24, 6,  0,  27648000 },
0111     { 192000,  SNDRV_PCM_FORMAT_S16_LE, 4,  24, 6,  0,  27648000 },
0112     { 192000,  SNDRV_PCM_FORMAT_S24_LE, 1,  24, 6,  0,  27648000 },
0113     { 192000,  SNDRV_PCM_FORMAT_S24_LE, 2,  24, 6,  0,  27648000 },
0114     { 192000,  SNDRV_PCM_FORMAT_S24_LE, 3,  24, 6,  0,  27648000 },
0115     { 192000,  SNDRV_PCM_FORMAT_S24_LE, 4,  24, 6,  0,  27648000 },
0116 };
0117
0118 static void test_tdm_params_to_bclk_one(struct kunit *test,
0119                     unsigned int rate, snd_pcm_format_t fmt,
0120                     unsigned int channels,
0121                     unsigned int tdm_width, unsigned int tdm_slots,
0122                     unsigned int slot_multiple,
0123                     unsigned int expected_bclk)
0124 {
0125     struct snd_pcm_hw_params params;
0126     int got_bclk;
0127
0128     _snd_pcm_hw_params_any(&params);
0129     snd_mask_none(hw_param_mask(&params, SNDRV_PCM_HW_PARAM_FORMAT));
0130     hw_param_interval(&params, SNDRV_PCM_HW_PARAM_RATE)->min = rate;
0131     hw_param_interval(&params, SNDRV_PCM_HW_PARAM_RATE)->max = rate;
0132     hw_param_interval(&params, SNDRV_PCM_HW_PARAM_CHANNELS)->min = channels;
0133     hw_param_interval(&params, SNDRV_PCM_HW_PARAM_CHANNELS)->max = channels;
0134     params_set_format(&params, fmt);
0135
0136     got_bclk = snd_soc_tdm_params_to_bclk(&params, tdm_width, tdm_slots, slot_multiple);
0137     pr_debug("%s: r=%u sb=%u ch=%u tw=%u ts=%u sm=%u expected=%u got=%d\n",
0138          __func__,
0139          rate, params_width(&params), channels, tdm_width, tdm_slots, slot_multiple,
0140          expected_bclk, got_bclk);
0141     KUNIT_ASSERT_EQ(test, expected_bclk, (unsigned int)got_bclk);
0142 }
0143
0144 static void test_tdm_params_to_bclk(struct kunit *test)
0145 {
0146     int i;
0147
0148     for (i = 0; i < ARRAY_SIZE(tdm_params_to_bclk_cases); ++i) {
0149         test_tdm_params_to_bclk_one(test,
0150                         tdm_params_to_bclk_cases[i].rate,
0151                         tdm_params_to_bclk_cases[i].fmt,
0152                         tdm_params_to_bclk_cases[i].channels,
0153                         tdm_params_to_bclk_cases[i].tdm_width,
0154                         tdm_params_to_bclk_cases[i].tdm_slots,
0155                         tdm_params_to_bclk_cases[i].slot_multiple,
0156                         tdm_params_to_bclk_cases[i].bclk);
0157
0158         if (tdm_params_to_bclk_cases[i].slot_multiple > 0)
0159             continue;
0160
0161         /* Slot multiple 1 should have the same effect as multiple 0 */
0162         test_tdm_params_to_bclk_one(test,
0163                         tdm_params_to_bclk_cases[i].rate,
0164                         tdm_params_to_bclk_cases[i].fmt,
0165                         tdm_params_to_bclk_cases[i].channels,
0166                         tdm_params_to_bclk_cases[i].tdm_width,
0167                         tdm_params_to_bclk_cases[i].tdm_slots,
0168                         1,
0169                         tdm_params_to_bclk_cases[i].bclk);
0170     }
0171 }
0172
0173 static struct kunit_case soc_utils_test_cases[] = {
0174     KUNIT_CASE(test_tdm_params_to_bclk),
0175     {}
0176 };
0177
0178 static struct kunit_suite soc_utils_test_suite = {
0179     .name = "soc-utils",
0180     .test_cases = soc_utils_test_cases,
0181 };
0182
0183 kunit_test_suites(&soc_utils_test_suite);
0184
0185 MODULE_DESCRIPTION("ASoC soc-utils kunit test");
0186 MODULE_LICENSE("GPL");