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/acpi.h> 11 #include <linux/init.h> 12 #include <linux/module.h> 13 #include <linux/of.h> 14 #include <linux/platform_device.h> 15 16 #include <sound/soc.h> 17 18 static const struct snd_soc_dapm_widget adau7002_widgets[] = { 19 SND_SOC_DAPM_INPUT("PDM_DAT"), 20 SND_SOC_DAPM_REGULATOR_SUPPLY("IOVDD", 0, 0), 21 }; 22 23 static const struct snd_soc_dapm_route adau7002_routes[] = { 24 { "Capture", NULL, "PDM_DAT" }, 25 { "Capture", NULL, "IOVDD" }, 26 }; 27 28 static struct snd_soc_dai_driver adau7002_dai = { 29 .name = "adau7002-hifi", 30 .capture = { 31 .stream_name = "Capture", 32 .channels_min = 2, 33 .channels_max = 2, 34 .rates = SNDRV_PCM_RATE_8000_96000, 35 .formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S18_3LE | 36 SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S24_LE | 37 SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S32_LE, 38 .sig_bits = 20, 39 }, 40 }; 41 42 static const struct snd_soc_component_driver adau7002_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 .idle_bias_on = 1, 48 .use_pmdown_time = 1, 49 .endianness = 1, 50 .non_legacy_dai_naming = 1, 51 }; 52 53 static int adau7002_probe(struct platform_device *pdev) 54 { 55 return devm_snd_soc_register_component(&pdev->dev, 56 &adau7002_component_driver, 57 &adau7002_dai, 1); 58 } 59 60 static int adau7002_remove(struct platform_device *pdev) 61 { 62 return 0; 63 } 64 65 #ifdef CONFIG_OF 66 static const struct of_device_id adau7002_dt_ids[] = { 67 { .compatible = "adi,adau7002", }, 68 { } 69 }; 70 MODULE_DEVICE_TABLE(of, adau7002_dt_ids); 71 #endif 72 73 #ifdef CONFIG_ACPI 74 static const struct acpi_device_id adau7002_acpi_match[] = { 75 { "ADAU7002", 0 }, 76 {}, 77 }; 78 MODULE_DEVICE_TABLE(acpi, adau7002_acpi_match); 79 #endif 80 81 static struct platform_driver adau7002_driver = { 82 .driver = { 83 .name = "adau7002", 84 .of_match_table = of_match_ptr(adau7002_dt_ids), 85 .acpi_match_table = ACPI_PTR(adau7002_acpi_match), 86 }, 87 .probe = adau7002_probe, 88 .remove = adau7002_remove, 89 }; 90 module_platform_driver(adau7002_driver); 91 92 MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>"); 93 MODULE_DESCRIPTION("ADAU7002 Stereo PDM-to-I2S/TDM Converter driver"); 94 MODULE_LICENSE("GPL v2"); 95