1a0d3546cSLars-Peter Clausen /* 2a0d3546cSLars-Peter Clausen * ADAU7002 Stereo PDM-to-I2S/TDM converter driver 3a0d3546cSLars-Peter Clausen * 4a0d3546cSLars-Peter Clausen * Copyright 2014-2016 Analog Devices 5a0d3546cSLars-Peter Clausen * Author: Lars-Peter Clausen <lars@metafoo.de> 6a0d3546cSLars-Peter Clausen * 7a0d3546cSLars-Peter Clausen * Licensed under the GPL-2. 8a0d3546cSLars-Peter Clausen */ 9a0d3546cSLars-Peter Clausen 10a0d3546cSLars-Peter Clausen #include <linux/init.h> 11a0d3546cSLars-Peter Clausen #include <linux/module.h> 12a0d3546cSLars-Peter Clausen #include <linux/of.h> 13a0d3546cSLars-Peter Clausen #include <linux/platform_device.h> 14a0d3546cSLars-Peter Clausen 15a0d3546cSLars-Peter Clausen #include <sound/soc.h> 16a0d3546cSLars-Peter Clausen 17a0d3546cSLars-Peter Clausen static const struct snd_soc_dapm_widget adau7002_widgets[] = { 18a0d3546cSLars-Peter Clausen SND_SOC_DAPM_INPUT("PDM_DAT"), 19a0d3546cSLars-Peter Clausen SND_SOC_DAPM_REGULATOR_SUPPLY("IOVDD", 0, 0), 20a0d3546cSLars-Peter Clausen }; 21a0d3546cSLars-Peter Clausen 22a0d3546cSLars-Peter Clausen static const struct snd_soc_dapm_route adau7002_routes[] = { 23a0d3546cSLars-Peter Clausen { "Capture", NULL, "PDM_DAT" }, 24a0d3546cSLars-Peter Clausen { "Capture", NULL, "IOVDD" }, 25a0d3546cSLars-Peter Clausen }; 26a0d3546cSLars-Peter Clausen 27a0d3546cSLars-Peter Clausen static struct snd_soc_dai_driver adau7002_dai = { 28a0d3546cSLars-Peter Clausen .name = "adau7002-hifi", 29a0d3546cSLars-Peter Clausen .capture = { 30a0d3546cSLars-Peter Clausen .stream_name = "Capture", 31a0d3546cSLars-Peter Clausen .channels_min = 2, 32a0d3546cSLars-Peter Clausen .channels_max = 2, 33a0d3546cSLars-Peter Clausen .rates = SNDRV_PCM_RATE_8000_96000, 34a0d3546cSLars-Peter Clausen .formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S18_3LE | 35a0d3546cSLars-Peter Clausen SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S24_LE | 36a0d3546cSLars-Peter Clausen SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S32_LE, 37a0d3546cSLars-Peter Clausen .sig_bits = 20, 38a0d3546cSLars-Peter Clausen }, 39a0d3546cSLars-Peter Clausen }; 40a0d3546cSLars-Peter Clausen 41a0d3546cSLars-Peter Clausen static const struct snd_soc_codec_driver adau7002_codec_driver = { 42a0d3546cSLars-Peter Clausen .dapm_widgets = adau7002_widgets, 43a0d3546cSLars-Peter Clausen .num_dapm_widgets = ARRAY_SIZE(adau7002_widgets), 44a0d3546cSLars-Peter Clausen .dapm_routes = adau7002_routes, 45a0d3546cSLars-Peter Clausen .num_dapm_routes = ARRAY_SIZE(adau7002_routes), 46a0d3546cSLars-Peter Clausen }; 47a0d3546cSLars-Peter Clausen 48a0d3546cSLars-Peter Clausen static int adau7002_probe(struct platform_device *pdev) 49a0d3546cSLars-Peter Clausen { 50a0d3546cSLars-Peter Clausen return snd_soc_register_codec(&pdev->dev, &adau7002_codec_driver, 51a0d3546cSLars-Peter Clausen &adau7002_dai, 1); 52a0d3546cSLars-Peter Clausen } 53a0d3546cSLars-Peter Clausen 54a0d3546cSLars-Peter Clausen static int adau7002_remove(struct platform_device *pdev) 55a0d3546cSLars-Peter Clausen { 56a0d3546cSLars-Peter Clausen snd_soc_unregister_codec(&pdev->dev); 57a0d3546cSLars-Peter Clausen return 0; 58a0d3546cSLars-Peter Clausen } 59a0d3546cSLars-Peter Clausen 60a0d3546cSLars-Peter Clausen #ifdef CONFIG_OF 61a0d3546cSLars-Peter Clausen static const struct of_device_id adau7002_dt_ids[] = { 62a0d3546cSLars-Peter Clausen { .compatible = "adi,adau7002", }, 63a0d3546cSLars-Peter Clausen { } 64a0d3546cSLars-Peter Clausen }; 65a0d3546cSLars-Peter Clausen MODULE_DEVICE_TABLE(of, adau7002_dt_ids); 66a0d3546cSLars-Peter Clausen #endif 67a0d3546cSLars-Peter Clausen 68a0d3546cSLars-Peter Clausen static struct platform_driver adau7002_driver = { 69a0d3546cSLars-Peter Clausen .driver = { 70a0d3546cSLars-Peter Clausen .name = "adau7002", 71a0d3546cSLars-Peter Clausen .of_match_table = of_match_ptr(adau7002_dt_ids), 72a0d3546cSLars-Peter Clausen }, 73a0d3546cSLars-Peter Clausen .probe = adau7002_probe, 74a0d3546cSLars-Peter Clausen .remove = adau7002_remove, 75a0d3546cSLars-Peter Clausen }; 76a0d3546cSLars-Peter Clausen module_platform_driver(adau7002_driver); 77a0d3546cSLars-Peter Clausen 78a0d3546cSLars-Peter Clausen MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>"); 79a0d3546cSLars-Peter Clausen MODULE_DESCRIPTION("ADAU7002 Stereo PDM-to-I2S/TDM Converter driver"); 80a0d3546cSLars-Peter Clausen MODULE_LICENSE("GPL v2"); 81