1 /* 2 * ADAU7002 Stereo PDM-to-I2S/TDM converter driver 3 * 4 * Copyright 2014-2016 Analog Devices 5 * Author: Lars-Peter Clausen <lars@metafoo.de> 6 * 7 * Licensed under the GPL-2. 8 */ 9 10 #include <linux/init.h> 11 #include <linux/module.h> 12 #include <linux/of.h> 13 #include <linux/platform_device.h> 14 15 #include <sound/soc.h> 16 17 static const struct snd_soc_dapm_widget adau7002_widgets[] = { 18 SND_SOC_DAPM_INPUT("PDM_DAT"), 19 SND_SOC_DAPM_REGULATOR_SUPPLY("IOVDD", 0, 0), 20 }; 21 22 static const struct snd_soc_dapm_route adau7002_routes[] = { 23 { "Capture", NULL, "PDM_DAT" }, 24 { "Capture", NULL, "IOVDD" }, 25 }; 26 27 static struct snd_soc_dai_driver adau7002_dai = { 28 .name = "adau7002-hifi", 29 .capture = { 30 .stream_name = "Capture", 31 .channels_min = 2, 32 .channels_max = 2, 33 .rates = SNDRV_PCM_RATE_8000_96000, 34 .formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S18_3LE | 35 SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S24_LE | 36 SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S32_LE, 37 .sig_bits = 20, 38 }, 39 }; 40 41 static const struct snd_soc_codec_driver adau7002_codec_driver = { 42 .dapm_widgets = adau7002_widgets, 43 .num_dapm_widgets = ARRAY_SIZE(adau7002_widgets), 44 .dapm_routes = adau7002_routes, 45 .num_dapm_routes = ARRAY_SIZE(adau7002_routes), 46 }; 47 48 static int adau7002_probe(struct platform_device *pdev) 49 { 50 return snd_soc_register_codec(&pdev->dev, &adau7002_codec_driver, 51 &adau7002_dai, 1); 52 } 53 54 static int adau7002_remove(struct platform_device *pdev) 55 { 56 snd_soc_unregister_codec(&pdev->dev); 57 return 0; 58 } 59 60 #ifdef CONFIG_OF 61 static const struct of_device_id adau7002_dt_ids[] = { 62 { .compatible = "adi,adau7002", }, 63 { } 64 }; 65 MODULE_DEVICE_TABLE(of, adau7002_dt_ids); 66 #endif 67 68 static struct platform_driver adau7002_driver = { 69 .driver = { 70 .name = "adau7002", 71 .of_match_table = of_match_ptr(adau7002_dt_ids), 72 }, 73 .probe = adau7002_probe, 74 .remove = adau7002_remove, 75 }; 76 module_platform_driver(adau7002_driver); 77 78 MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>"); 79 MODULE_DESCRIPTION("ADAU7002 Stereo PDM-to-I2S/TDM Converter driver"); 80 MODULE_LICENSE("GPL v2"); 81