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-rw-r--r--sound/soc/codecs/adau7002.c137
1 files changed, 137 insertions, 0 deletions
diff --git a/sound/soc/codecs/adau7002.c b/sound/soc/codecs/adau7002.c
new file mode 100644
index 000000000..401bafabc
--- /dev/null
+++ b/sound/soc/codecs/adau7002.c
@@ -0,0 +1,137 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * ADAU7002 Stereo PDM-to-I2S/TDM converter driver
+ *
+ * Copyright 2014-2016 Analog Devices
+ * Author: Lars-Peter Clausen <lars@metafoo.de>
+ */
+
+#include <linux/acpi.h>
+#include <linux/delay.h>
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/platform_device.h>
+
+#include <sound/soc.h>
+
+struct adau7002_priv {
+ int wakeup_delay;
+};
+
+static int adau7002_aif_event(struct snd_soc_dapm_widget *w,
+ struct snd_kcontrol *kcontrol, int event)
+{
+ struct snd_soc_component *component =
+ snd_soc_dapm_to_component(w->dapm);
+ struct adau7002_priv *adau7002 =
+ snd_soc_component_get_drvdata(component);
+
+ switch (event) {
+ case SND_SOC_DAPM_POST_PMU:
+ if (adau7002->wakeup_delay)
+ msleep(adau7002->wakeup_delay);
+ break;
+ }
+
+ return 0;
+}
+
+static int adau7002_component_probe(struct snd_soc_component *component)
+{
+ struct adau7002_priv *adau7002;
+
+ adau7002 = devm_kzalloc(component->dev, sizeof(*adau7002),
+ GFP_KERNEL);
+ if (!adau7002)
+ return -ENOMEM;
+
+ device_property_read_u32(component->dev, "wakeup-delay-ms",
+ &adau7002->wakeup_delay);
+
+ snd_soc_component_set_drvdata(component, adau7002);
+
+ return 0;
+}
+
+static const struct snd_soc_dapm_widget adau7002_widgets[] = {
+ SND_SOC_DAPM_AIF_OUT_E("ADAU AIF", "Capture", 0,
+ SND_SOC_NOPM, 0, 0, adau7002_aif_event,
+ SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_POST_PMD),
+ SND_SOC_DAPM_INPUT("PDM_DAT"),
+ SND_SOC_DAPM_REGULATOR_SUPPLY("IOVDD", 0, 0),
+};
+
+static const struct snd_soc_dapm_route adau7002_routes[] = {
+ { "ADAU AIF", NULL, "PDM_DAT"},
+ { "Capture", NULL, "PDM_DAT" },
+ { "Capture", NULL, "IOVDD" },
+};
+
+static struct snd_soc_dai_driver adau7002_dai = {
+ .name = "adau7002-hifi",
+ .capture = {
+ .stream_name = "Capture",
+ .channels_min = 2,
+ .channels_max = 2,
+ .rates = SNDRV_PCM_RATE_8000_96000,
+ .formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S18_3LE |
+ SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S24_LE |
+ SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S32_LE,
+ .sig_bits = 20,
+ },
+};
+
+static const struct snd_soc_component_driver adau7002_component_driver = {
+ .probe = adau7002_component_probe,
+ .dapm_widgets = adau7002_widgets,
+ .num_dapm_widgets = ARRAY_SIZE(adau7002_widgets),
+ .dapm_routes = adau7002_routes,
+ .num_dapm_routes = ARRAY_SIZE(adau7002_routes),
+ .idle_bias_on = 1,
+ .use_pmdown_time = 1,
+ .endianness = 1,
+};
+
+static int adau7002_probe(struct platform_device *pdev)
+{
+ return devm_snd_soc_register_component(&pdev->dev,
+ &adau7002_component_driver,
+ &adau7002_dai, 1);
+}
+
+static int adau7002_remove(struct platform_device *pdev)
+{
+ return 0;
+}
+
+#ifdef CONFIG_OF
+static const struct of_device_id adau7002_dt_ids[] = {
+ { .compatible = "adi,adau7002", },
+ { }
+};
+MODULE_DEVICE_TABLE(of, adau7002_dt_ids);
+#endif
+
+#ifdef CONFIG_ACPI
+static const struct acpi_device_id adau7002_acpi_match[] = {
+ { "ADAU7002", 0 },
+ {},
+};
+MODULE_DEVICE_TABLE(acpi, adau7002_acpi_match);
+#endif
+
+static struct platform_driver adau7002_driver = {
+ .driver = {
+ .name = "adau7002",
+ .of_match_table = of_match_ptr(adau7002_dt_ids),
+ .acpi_match_table = ACPI_PTR(adau7002_acpi_match),
+ },
+ .probe = adau7002_probe,
+ .remove = adau7002_remove,
+};
+module_platform_driver(adau7002_driver);
+
+MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>");
+MODULE_DESCRIPTION("ADAU7002 Stereo PDM-to-I2S/TDM Converter driver");
+MODULE_LICENSE("GPL v2");