^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0+
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) //
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) // soc-util.c -- ALSA SoC Audio Layer utility functions
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) //
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) // Copyright 2009 Wolfson Microelectronics PLC.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) //
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) // Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) // Liam Girdwood <lrg@slimlogic.co.uk>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/platform_device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/export.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <sound/core.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <sound/pcm.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <sound/pcm_params.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <sound/soc.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) int snd_soc_calc_frame_size(int sample_size, int channels, int tdm_slots)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) return sample_size * channels * tdm_slots;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) EXPORT_SYMBOL_GPL(snd_soc_calc_frame_size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) int snd_soc_params_to_frame_size(struct snd_pcm_hw_params *params)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) int sample_size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) sample_size = snd_pcm_format_width(params_format(params));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) if (sample_size < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) return sample_size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) return snd_soc_calc_frame_size(sample_size, params_channels(params),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) EXPORT_SYMBOL_GPL(snd_soc_params_to_frame_size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) int snd_soc_calc_bclk(int fs, int sample_size, int channels, int tdm_slots)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) return fs * snd_soc_calc_frame_size(sample_size, channels, tdm_slots);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) EXPORT_SYMBOL_GPL(snd_soc_calc_bclk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) int snd_soc_params_to_bclk(struct snd_pcm_hw_params *params)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) ret = snd_soc_params_to_frame_size(params);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) if (ret > 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) return ret * params_rate(params);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) EXPORT_SYMBOL_GPL(snd_soc_params_to_bclk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) static const struct snd_pcm_hardware dummy_dma_hardware = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) /* Random values to keep userspace happy when checking constraints */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) .info = SNDRV_PCM_INFO_INTERLEAVED |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) SNDRV_PCM_INFO_BLOCK_TRANSFER,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) .buffer_bytes_max = 128*1024,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) .period_bytes_min = PAGE_SIZE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) .period_bytes_max = PAGE_SIZE*2,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) .periods_min = 2,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) .periods_max = 128,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) static int dummy_dma_open(struct snd_soc_component *component,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) struct snd_pcm_substream *substream)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) /* BE's dont need dummy params */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) if (!rtd->dai_link->no_pcm)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) snd_soc_set_runtime_hwparams(substream, &dummy_dma_hardware);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) static const struct snd_soc_component_driver dummy_platform = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) .open = dummy_dma_open,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) static const struct snd_soc_component_driver dummy_codec = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) .idle_bias_on = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) .use_pmdown_time = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) .endianness = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) .non_legacy_dai_naming = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) #define STUB_RATES SNDRV_PCM_RATE_8000_384000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) #define STUB_FORMATS (SNDRV_PCM_FMTBIT_S8 | \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) SNDRV_PCM_FMTBIT_U8 | \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) SNDRV_PCM_FMTBIT_S16_LE | \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) SNDRV_PCM_FMTBIT_U16_LE | \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) SNDRV_PCM_FMTBIT_S24_LE | \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) SNDRV_PCM_FMTBIT_S24_3LE | \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) SNDRV_PCM_FMTBIT_U24_LE | \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) SNDRV_PCM_FMTBIT_S32_LE | \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) SNDRV_PCM_FMTBIT_U32_LE | \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_LE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) * The dummy CODEC is only meant to be used in situations where there is no
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) * actual hardware.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) * If there is actual hardware even if it does not have a control bus
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) * the hardware will still have constraints like supported samplerates, etc.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) * which should be modelled. And the data flow graph also should be modelled
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) * using DAPM.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) static struct snd_soc_dai_driver dummy_dai = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) .name = "snd-soc-dummy-dai",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) .playback = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) .stream_name = "Playback",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) .channels_min = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) .channels_max = 384,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) .rates = STUB_RATES,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) .formats = STUB_FORMATS,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) .capture = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) .stream_name = "Capture",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) .channels_min = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) .channels_max = 384,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) .rates = STUB_RATES,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) .formats = STUB_FORMATS,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) int snd_soc_dai_is_dummy(struct snd_soc_dai *dai)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) if (dai->driver == &dummy_dai)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) static int snd_soc_dummy_probe(struct platform_device *pdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) ret = devm_snd_soc_register_component(&pdev->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) &dummy_codec, &dummy_dai, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) ret = devm_snd_soc_register_component(&pdev->dev, &dummy_platform,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) NULL, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) static struct platform_driver soc_dummy_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) .driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) .name = "snd-soc-dummy",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) .probe = snd_soc_dummy_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) static struct platform_device *soc_dummy_dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) int __init snd_soc_util_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) soc_dummy_dev =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) platform_device_register_simple("snd-soc-dummy", -1, NULL, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) if (IS_ERR(soc_dummy_dev))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) return PTR_ERR(soc_dummy_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) ret = platform_driver_register(&soc_dummy_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) if (ret != 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) platform_device_unregister(soc_dummy_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) void __exit snd_soc_util_exit(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) platform_driver_unregister(&soc_dummy_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) platform_device_unregister(soc_dummy_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) }
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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