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 .component_driver = { 43 .dapm_widgets = adau7002_widgets, 44 .num_dapm_widgets = ARRAY_SIZE(adau7002_widgets), 45 .dapm_routes = adau7002_routes, 46 .num_dapm_routes = ARRAY_SIZE(adau7002_routes), 47 }, 48 }; 49 50 static int adau7002_probe(struct platform_device *pdev) 51 { 52 return snd_soc_register_codec(&pdev->dev, &adau7002_codec_driver, 53 &adau7002_dai, 1); 54 } 55 56 static int adau7002_remove(struct platform_device *pdev) 57 { 58 snd_soc_unregister_codec(&pdev->dev); 59 return 0; 60 } 61 62 #ifdef CONFIG_OF 63 static const struct of_device_id adau7002_dt_ids[] = { 64 { .compatible = "adi,adau7002", }, 65 { } 66 }; 67 MODULE_DEVICE_TABLE(of, adau7002_dt_ids); 68 #endif 69 70 static struct platform_driver adau7002_driver = { 71 .driver = { 72 .name = "adau7002", 73 .of_match_table = of_match_ptr(adau7002_dt_ids), 74 }, 75 .probe = adau7002_probe, 76 .remove = adau7002_remove, 77 }; 78 module_platform_driver(adau7002_driver); 79 80 MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>"); 81 MODULE_DESCRIPTION("ADAU7002 Stereo PDM-to-I2S/TDM Converter driver"); 82 MODULE_LICENSE("GPL v2"); 83