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> 117b57085aSAgrawal, Akshu #include <linux/delay.h> 12a0d3546cSLars-Peter Clausen #include <linux/init.h> 13a0d3546cSLars-Peter Clausen #include <linux/module.h> 14a0d3546cSLars-Peter Clausen #include <linux/of.h> 15a0d3546cSLars-Peter Clausen #include <linux/platform_device.h> 16a0d3546cSLars-Peter Clausen 17a0d3546cSLars-Peter Clausen #include <sound/soc.h> 18a0d3546cSLars-Peter Clausen 197b57085aSAgrawal, Akshu struct adau7002_priv { 207b57085aSAgrawal, Akshu int wakeup_delay; 217b57085aSAgrawal, Akshu }; 227b57085aSAgrawal, Akshu 237b57085aSAgrawal, Akshu static int adau7002_aif_event(struct snd_soc_dapm_widget *w, 247b57085aSAgrawal, Akshu struct snd_kcontrol *kcontrol, int event) 257b57085aSAgrawal, Akshu { 267b57085aSAgrawal, Akshu struct snd_soc_component *component = 277b57085aSAgrawal, Akshu snd_soc_dapm_to_component(w->dapm); 287b57085aSAgrawal, Akshu struct adau7002_priv *adau7002 = 297b57085aSAgrawal, Akshu snd_soc_component_get_drvdata(component); 307b57085aSAgrawal, Akshu 317b57085aSAgrawal, Akshu switch (event) { 327b57085aSAgrawal, Akshu case SND_SOC_DAPM_POST_PMU: 337b57085aSAgrawal, Akshu if (adau7002->wakeup_delay) 347b57085aSAgrawal, Akshu msleep(adau7002->wakeup_delay); 357b57085aSAgrawal, Akshu break; 367b57085aSAgrawal, Akshu } 377b57085aSAgrawal, Akshu 387b57085aSAgrawal, Akshu return 0; 397b57085aSAgrawal, Akshu } 407b57085aSAgrawal, Akshu 417b57085aSAgrawal, Akshu static int adau7002_component_probe(struct snd_soc_component *component) 427b57085aSAgrawal, Akshu { 437b57085aSAgrawal, Akshu struct adau7002_priv *adau7002; 447b57085aSAgrawal, Akshu 457b57085aSAgrawal, Akshu adau7002 = devm_kzalloc(component->dev, sizeof(*adau7002), 467b57085aSAgrawal, Akshu GFP_KERNEL); 477b57085aSAgrawal, Akshu if (!adau7002) 487b57085aSAgrawal, Akshu return -ENOMEM; 497b57085aSAgrawal, Akshu 507b57085aSAgrawal, Akshu device_property_read_u32(component->dev, "wakeup-delay-ms", 517b57085aSAgrawal, Akshu &adau7002->wakeup_delay); 527b57085aSAgrawal, Akshu 537b57085aSAgrawal, Akshu snd_soc_component_set_drvdata(component, adau7002); 547b57085aSAgrawal, Akshu 557b57085aSAgrawal, Akshu return 0; 567b57085aSAgrawal, Akshu } 577b57085aSAgrawal, Akshu 58a0d3546cSLars-Peter Clausen static const struct snd_soc_dapm_widget adau7002_widgets[] = { 597b57085aSAgrawal, Akshu SND_SOC_DAPM_AIF_OUT_E("ADAU AIF", "Capture", 0, 607b57085aSAgrawal, Akshu SND_SOC_NOPM, 0, 0, adau7002_aif_event, 617b57085aSAgrawal, Akshu SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_POST_PMD), 62a0d3546cSLars-Peter Clausen SND_SOC_DAPM_INPUT("PDM_DAT"), 63a0d3546cSLars-Peter Clausen SND_SOC_DAPM_REGULATOR_SUPPLY("IOVDD", 0, 0), 64a0d3546cSLars-Peter Clausen }; 65a0d3546cSLars-Peter Clausen 66a0d3546cSLars-Peter Clausen static const struct snd_soc_dapm_route adau7002_routes[] = { 677b57085aSAgrawal, Akshu { "ADAU AIF", NULL, "PDM_DAT"}, 68a0d3546cSLars-Peter Clausen { "Capture", NULL, "PDM_DAT" }, 69a0d3546cSLars-Peter Clausen { "Capture", NULL, "IOVDD" }, 70a0d3546cSLars-Peter Clausen }; 71a0d3546cSLars-Peter Clausen 72a0d3546cSLars-Peter Clausen static struct snd_soc_dai_driver adau7002_dai = { 73a0d3546cSLars-Peter Clausen .name = "adau7002-hifi", 74a0d3546cSLars-Peter Clausen .capture = { 75a0d3546cSLars-Peter Clausen .stream_name = "Capture", 76a0d3546cSLars-Peter Clausen .channels_min = 2, 77a0d3546cSLars-Peter Clausen .channels_max = 2, 78a0d3546cSLars-Peter Clausen .rates = SNDRV_PCM_RATE_8000_96000, 79a0d3546cSLars-Peter Clausen .formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S18_3LE | 80a0d3546cSLars-Peter Clausen SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S24_LE | 81a0d3546cSLars-Peter Clausen SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S32_LE, 82a0d3546cSLars-Peter Clausen .sig_bits = 20, 83a0d3546cSLars-Peter Clausen }, 84a0d3546cSLars-Peter Clausen }; 85a0d3546cSLars-Peter Clausen 86d5bc5484SKuninori Morimoto static const struct snd_soc_component_driver adau7002_component_driver = { 877b57085aSAgrawal, Akshu .probe = adau7002_component_probe, 88a0d3546cSLars-Peter Clausen .dapm_widgets = adau7002_widgets, 89a0d3546cSLars-Peter Clausen .num_dapm_widgets = ARRAY_SIZE(adau7002_widgets), 90a0d3546cSLars-Peter Clausen .dapm_routes = adau7002_routes, 91a0d3546cSLars-Peter Clausen .num_dapm_routes = ARRAY_SIZE(adau7002_routes), 92d5bc5484SKuninori Morimoto .idle_bias_on = 1, 93d5bc5484SKuninori Morimoto .use_pmdown_time = 1, 94d5bc5484SKuninori Morimoto .endianness = 1, 95d5bc5484SKuninori Morimoto .non_legacy_dai_naming = 1, 96a0d3546cSLars-Peter Clausen }; 97a0d3546cSLars-Peter Clausen 98a0d3546cSLars-Peter Clausen static int adau7002_probe(struct platform_device *pdev) 99a0d3546cSLars-Peter Clausen { 100d5bc5484SKuninori Morimoto return devm_snd_soc_register_component(&pdev->dev, 101d5bc5484SKuninori Morimoto &adau7002_component_driver, 102a0d3546cSLars-Peter Clausen &adau7002_dai, 1); 103a0d3546cSLars-Peter Clausen } 104a0d3546cSLars-Peter Clausen 105a0d3546cSLars-Peter Clausen static int adau7002_remove(struct platform_device *pdev) 106a0d3546cSLars-Peter Clausen { 107a0d3546cSLars-Peter Clausen return 0; 108a0d3546cSLars-Peter Clausen } 109a0d3546cSLars-Peter Clausen 110a0d3546cSLars-Peter Clausen #ifdef CONFIG_OF 111a0d3546cSLars-Peter Clausen static const struct of_device_id adau7002_dt_ids[] = { 112a0d3546cSLars-Peter Clausen { .compatible = "adi,adau7002", }, 113a0d3546cSLars-Peter Clausen { } 114a0d3546cSLars-Peter Clausen }; 115a0d3546cSLars-Peter Clausen MODULE_DEVICE_TABLE(of, adau7002_dt_ids); 116a0d3546cSLars-Peter Clausen #endif 117a0d3546cSLars-Peter Clausen 118ba7a3a97SAkshu Agrawal #ifdef CONFIG_ACPI 119ba7a3a97SAkshu Agrawal static const struct acpi_device_id adau7002_acpi_match[] = { 120ba7a3a97SAkshu Agrawal { "ADAU7002", 0 }, 121ba7a3a97SAkshu Agrawal {}, 122ba7a3a97SAkshu Agrawal }; 123ba7a3a97SAkshu Agrawal MODULE_DEVICE_TABLE(acpi, adau7002_acpi_match); 124ba7a3a97SAkshu Agrawal #endif 125ba7a3a97SAkshu Agrawal 126a0d3546cSLars-Peter Clausen static struct platform_driver adau7002_driver = { 127a0d3546cSLars-Peter Clausen .driver = { 128a0d3546cSLars-Peter Clausen .name = "adau7002", 129a0d3546cSLars-Peter Clausen .of_match_table = of_match_ptr(adau7002_dt_ids), 130ba7a3a97SAkshu Agrawal .acpi_match_table = ACPI_PTR(adau7002_acpi_match), 131a0d3546cSLars-Peter Clausen }, 132a0d3546cSLars-Peter Clausen .probe = adau7002_probe, 133a0d3546cSLars-Peter Clausen .remove = adau7002_remove, 134a0d3546cSLars-Peter Clausen }; 135a0d3546cSLars-Peter Clausen module_platform_driver(adau7002_driver); 136a0d3546cSLars-Peter Clausen 137a0d3546cSLars-Peter Clausen MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>"); 138a0d3546cSLars-Peter Clausen MODULE_DESCRIPTION("ADAU7002 Stereo PDM-to-I2S/TDM Converter driver"); 139a0d3546cSLars-Peter Clausen MODULE_LICENSE("GPL v2"); 140