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 10ba7a3a97SAkshu Agrawal #include <linux/acpi.h> 11a0d3546cSLars-Peter Clausen #include <linux/init.h> 12a0d3546cSLars-Peter Clausen #include <linux/module.h> 13a0d3546cSLars-Peter Clausen #include <linux/of.h> 14a0d3546cSLars-Peter Clausen #include <linux/platform_device.h> 15a0d3546cSLars-Peter Clausen 16a0d3546cSLars-Peter Clausen #include <sound/soc.h> 17a0d3546cSLars-Peter Clausen 18a0d3546cSLars-Peter Clausen static const struct snd_soc_dapm_widget adau7002_widgets[] = { 19a0d3546cSLars-Peter Clausen SND_SOC_DAPM_INPUT("PDM_DAT"), 20a0d3546cSLars-Peter Clausen SND_SOC_DAPM_REGULATOR_SUPPLY("IOVDD", 0, 0), 21a0d3546cSLars-Peter Clausen }; 22a0d3546cSLars-Peter Clausen 23a0d3546cSLars-Peter Clausen static const struct snd_soc_dapm_route adau7002_routes[] = { 24a0d3546cSLars-Peter Clausen { "Capture", NULL, "PDM_DAT" }, 25a0d3546cSLars-Peter Clausen { "Capture", NULL, "IOVDD" }, 26a0d3546cSLars-Peter Clausen }; 27a0d3546cSLars-Peter Clausen 28a0d3546cSLars-Peter Clausen static struct snd_soc_dai_driver adau7002_dai = { 29a0d3546cSLars-Peter Clausen .name = "adau7002-hifi", 30a0d3546cSLars-Peter Clausen .capture = { 31a0d3546cSLars-Peter Clausen .stream_name = "Capture", 32a0d3546cSLars-Peter Clausen .channels_min = 2, 33a0d3546cSLars-Peter Clausen .channels_max = 2, 34a0d3546cSLars-Peter Clausen .rates = SNDRV_PCM_RATE_8000_96000, 35a0d3546cSLars-Peter Clausen .formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S18_3LE | 36a0d3546cSLars-Peter Clausen SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S24_LE | 37a0d3546cSLars-Peter Clausen SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S32_LE, 38a0d3546cSLars-Peter Clausen .sig_bits = 20, 39a0d3546cSLars-Peter Clausen }, 40a0d3546cSLars-Peter Clausen }; 41a0d3546cSLars-Peter Clausen 42d5bc5484SKuninori Morimoto static const struct snd_soc_component_driver adau7002_component_driver = { 43a0d3546cSLars-Peter Clausen .dapm_widgets = adau7002_widgets, 44a0d3546cSLars-Peter Clausen .num_dapm_widgets = ARRAY_SIZE(adau7002_widgets), 45a0d3546cSLars-Peter Clausen .dapm_routes = adau7002_routes, 46a0d3546cSLars-Peter Clausen .num_dapm_routes = ARRAY_SIZE(adau7002_routes), 47d5bc5484SKuninori Morimoto .idle_bias_on = 1, 48d5bc5484SKuninori Morimoto .use_pmdown_time = 1, 49d5bc5484SKuninori Morimoto .endianness = 1, 50d5bc5484SKuninori Morimoto .non_legacy_dai_naming = 1, 51a0d3546cSLars-Peter Clausen }; 52a0d3546cSLars-Peter Clausen 53a0d3546cSLars-Peter Clausen static int adau7002_probe(struct platform_device *pdev) 54a0d3546cSLars-Peter Clausen { 55d5bc5484SKuninori Morimoto return devm_snd_soc_register_component(&pdev->dev, 56d5bc5484SKuninori Morimoto &adau7002_component_driver, 57a0d3546cSLars-Peter Clausen &adau7002_dai, 1); 58a0d3546cSLars-Peter Clausen } 59a0d3546cSLars-Peter Clausen 60a0d3546cSLars-Peter Clausen static int adau7002_remove(struct platform_device *pdev) 61a0d3546cSLars-Peter Clausen { 62a0d3546cSLars-Peter Clausen return 0; 63a0d3546cSLars-Peter Clausen } 64a0d3546cSLars-Peter Clausen 65a0d3546cSLars-Peter Clausen #ifdef CONFIG_OF 66a0d3546cSLars-Peter Clausen static const struct of_device_id adau7002_dt_ids[] = { 67a0d3546cSLars-Peter Clausen { .compatible = "adi,adau7002", }, 68a0d3546cSLars-Peter Clausen { } 69a0d3546cSLars-Peter Clausen }; 70a0d3546cSLars-Peter Clausen MODULE_DEVICE_TABLE(of, adau7002_dt_ids); 71a0d3546cSLars-Peter Clausen #endif 72a0d3546cSLars-Peter Clausen 73ba7a3a97SAkshu Agrawal #ifdef CONFIG_ACPI 74ba7a3a97SAkshu Agrawal static const struct acpi_device_id adau7002_acpi_match[] = { 75ba7a3a97SAkshu Agrawal { "ADAU7002", 0 }, 76ba7a3a97SAkshu Agrawal {}, 77ba7a3a97SAkshu Agrawal }; 78ba7a3a97SAkshu Agrawal MODULE_DEVICE_TABLE(acpi, adau7002_acpi_match); 79ba7a3a97SAkshu Agrawal #endif 80ba7a3a97SAkshu Agrawal 81a0d3546cSLars-Peter Clausen static struct platform_driver adau7002_driver = { 82a0d3546cSLars-Peter Clausen .driver = { 83a0d3546cSLars-Peter Clausen .name = "adau7002", 84a0d3546cSLars-Peter Clausen .of_match_table = of_match_ptr(adau7002_dt_ids), 85ba7a3a97SAkshu Agrawal .acpi_match_table = ACPI_PTR(adau7002_acpi_match), 86a0d3546cSLars-Peter Clausen }, 87a0d3546cSLars-Peter Clausen .probe = adau7002_probe, 88a0d3546cSLars-Peter Clausen .remove = adau7002_remove, 89a0d3546cSLars-Peter Clausen }; 90a0d3546cSLars-Peter Clausen module_platform_driver(adau7002_driver); 91a0d3546cSLars-Peter Clausen 92a0d3546cSLars-Peter Clausen MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>"); 93a0d3546cSLars-Peter Clausen MODULE_DESCRIPTION("ADAU7002 Stereo PDM-to-I2S/TDM Converter driver"); 94a0d3546cSLars-Peter Clausen MODULE_LICENSE("GPL v2"); 95