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138 lines
3.4 KiB
138 lines
3.4 KiB
// SPDX-License-Identifier: GPL-2.0-only |
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/* |
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* ADAU7002 Stereo PDM-to-I2S/TDM converter driver |
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* |
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* Copyright 2014-2016 Analog Devices |
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* Author: Lars-Peter Clausen <[email protected]> |
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*/ |
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#include <linux/acpi.h> |
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#include <linux/delay.h> |
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#include <linux/init.h> |
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#include <linux/module.h> |
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#include <linux/of.h> |
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#include <linux/platform_device.h> |
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#include <sound/soc.h> |
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struct adau7002_priv { |
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int wakeup_delay; |
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}; |
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static int adau7002_aif_event(struct snd_soc_dapm_widget *w, |
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struct snd_kcontrol *kcontrol, int event) |
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{ |
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struct snd_soc_component *component = |
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snd_soc_dapm_to_component(w->dapm); |
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struct adau7002_priv *adau7002 = |
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snd_soc_component_get_drvdata(component); |
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switch (event) { |
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case SND_SOC_DAPM_POST_PMU: |
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if (adau7002->wakeup_delay) |
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msleep(adau7002->wakeup_delay); |
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break; |
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} |
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return 0; |
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} |
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static int adau7002_component_probe(struct snd_soc_component *component) |
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{ |
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struct adau7002_priv *adau7002; |
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adau7002 = devm_kzalloc(component->dev, sizeof(*adau7002), |
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GFP_KERNEL); |
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if (!adau7002) |
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return -ENOMEM; |
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device_property_read_u32(component->dev, "wakeup-delay-ms", |
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&adau7002->wakeup_delay); |
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snd_soc_component_set_drvdata(component, adau7002); |
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return 0; |
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} |
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static const struct snd_soc_dapm_widget adau7002_widgets[] = { |
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SND_SOC_DAPM_AIF_OUT_E("ADAU AIF", "Capture", 0, |
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SND_SOC_NOPM, 0, 0, adau7002_aif_event, |
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SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_POST_PMD), |
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SND_SOC_DAPM_INPUT("PDM_DAT"), |
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SND_SOC_DAPM_REGULATOR_SUPPLY("IOVDD", 0, 0), |
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}; |
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static const struct snd_soc_dapm_route adau7002_routes[] = { |
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{ "ADAU AIF", NULL, "PDM_DAT"}, |
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{ "Capture", NULL, "PDM_DAT" }, |
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{ "Capture", NULL, "IOVDD" }, |
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}; |
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static struct snd_soc_dai_driver adau7002_dai = { |
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.name = "adau7002-hifi", |
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.capture = { |
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.stream_name = "Capture", |
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.channels_min = 2, |
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.channels_max = 2, |
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.rates = SNDRV_PCM_RATE_8000_96000, |
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.formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S18_3LE | |
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SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S24_LE | |
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SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S32_LE, |
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.sig_bits = 20, |
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}, |
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}; |
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static const struct snd_soc_component_driver adau7002_component_driver = { |
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.probe = adau7002_component_probe, |
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.dapm_widgets = adau7002_widgets, |
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.num_dapm_widgets = ARRAY_SIZE(adau7002_widgets), |
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.dapm_routes = adau7002_routes, |
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.num_dapm_routes = ARRAY_SIZE(adau7002_routes), |
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.idle_bias_on = 1, |
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.use_pmdown_time = 1, |
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.endianness = 1, |
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.non_legacy_dai_naming = 1, |
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}; |
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static int adau7002_probe(struct platform_device *pdev) |
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{ |
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return devm_snd_soc_register_component(&pdev->dev, |
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&adau7002_component_driver, |
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&adau7002_dai, 1); |
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} |
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static int adau7002_remove(struct platform_device *pdev) |
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{ |
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return 0; |
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} |
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#ifdef CONFIG_OF |
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static const struct of_device_id adau7002_dt_ids[] = { |
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{ .compatible = "adi,adau7002", }, |
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{ } |
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}; |
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MODULE_DEVICE_TABLE(of, adau7002_dt_ids); |
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#endif |
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#ifdef CONFIG_ACPI |
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static const struct acpi_device_id adau7002_acpi_match[] = { |
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{ "ADAU7002", 0 }, |
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{}, |
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}; |
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MODULE_DEVICE_TABLE(acpi, adau7002_acpi_match); |
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#endif |
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static struct platform_driver adau7002_driver = { |
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.driver = { |
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.name = "adau7002", |
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.of_match_table = of_match_ptr(adau7002_dt_ids), |
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.acpi_match_table = ACPI_PTR(adau7002_acpi_match), |
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}, |
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.probe = adau7002_probe, |
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.remove = adau7002_remove, |
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}; |
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module_platform_driver(adau7002_driver); |
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MODULE_AUTHOR("Lars-Peter Clausen <[email protected]>"); |
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MODULE_DESCRIPTION("ADAU7002 Stereo PDM-to-I2S/TDM Converter driver"); |
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MODULE_LICENSE("GPL v2");
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