| .. | .. |
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| 1 | +// SPDX-License-Identifier: GPL-2.0-only |
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| 1 | 2 | /* |
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| 2 | 3 | * ADAU7002 Stereo PDM-to-I2S/TDM converter driver |
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| 3 | 4 | * |
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| 4 | 5 | * Copyright 2014-2016 Analog Devices |
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| 5 | 6 | * Author: Lars-Peter Clausen <lars@metafoo.de> |
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| 6 | | - * |
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| 7 | | - * Licensed under the GPL-2. |
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| 8 | 7 | */ |
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| 9 | 8 | |
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| 10 | 9 | #include <linux/acpi.h> |
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| 10 | +#include <linux/delay.h> |
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| 11 | 11 | #include <linux/init.h> |
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| 12 | 12 | #include <linux/module.h> |
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| 13 | 13 | #include <linux/of.h> |
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| .. | .. |
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| 15 | 15 | |
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| 16 | 16 | #include <sound/soc.h> |
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| 17 | 17 | |
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| 18 | +struct adau7002_priv { |
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| 19 | + int wakeup_delay; |
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| 20 | +}; |
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| 21 | + |
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| 22 | +static int adau7002_aif_event(struct snd_soc_dapm_widget *w, |
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| 23 | + struct snd_kcontrol *kcontrol, int event) |
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| 24 | +{ |
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| 25 | + struct snd_soc_component *component = |
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| 26 | + snd_soc_dapm_to_component(w->dapm); |
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| 27 | + struct adau7002_priv *adau7002 = |
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| 28 | + snd_soc_component_get_drvdata(component); |
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| 29 | + |
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| 30 | + switch (event) { |
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| 31 | + case SND_SOC_DAPM_POST_PMU: |
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| 32 | + if (adau7002->wakeup_delay) |
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| 33 | + msleep(adau7002->wakeup_delay); |
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| 34 | + break; |
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| 35 | + } |
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| 36 | + |
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| 37 | + return 0; |
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| 38 | +} |
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| 39 | + |
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| 40 | +static int adau7002_component_probe(struct snd_soc_component *component) |
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| 41 | +{ |
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| 42 | + struct adau7002_priv *adau7002; |
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| 43 | + |
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| 44 | + adau7002 = devm_kzalloc(component->dev, sizeof(*adau7002), |
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| 45 | + GFP_KERNEL); |
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| 46 | + if (!adau7002) |
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| 47 | + return -ENOMEM; |
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| 48 | + |
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| 49 | + device_property_read_u32(component->dev, "wakeup-delay-ms", |
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| 50 | + &adau7002->wakeup_delay); |
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| 51 | + |
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| 52 | + snd_soc_component_set_drvdata(component, adau7002); |
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| 53 | + |
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| 54 | + return 0; |
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| 55 | +} |
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| 56 | + |
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| 18 | 57 | static const struct snd_soc_dapm_widget adau7002_widgets[] = { |
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| 58 | + SND_SOC_DAPM_AIF_OUT_E("ADAU AIF", "Capture", 0, |
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| 59 | + SND_SOC_NOPM, 0, 0, adau7002_aif_event, |
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| 60 | + SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_POST_PMD), |
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| 19 | 61 | SND_SOC_DAPM_INPUT("PDM_DAT"), |
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| 20 | 62 | SND_SOC_DAPM_REGULATOR_SUPPLY("IOVDD", 0, 0), |
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| 21 | 63 | }; |
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| 22 | 64 | |
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| 23 | 65 | static const struct snd_soc_dapm_route adau7002_routes[] = { |
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| 66 | + { "ADAU AIF", NULL, "PDM_DAT"}, |
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| 24 | 67 | { "Capture", NULL, "PDM_DAT" }, |
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| 25 | 68 | { "Capture", NULL, "IOVDD" }, |
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| 26 | 69 | }; |
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| .. | .. |
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| 40 | 83 | }; |
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| 41 | 84 | |
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| 42 | 85 | static const struct snd_soc_component_driver adau7002_component_driver = { |
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| 86 | + .probe = adau7002_component_probe, |
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| 43 | 87 | .dapm_widgets = adau7002_widgets, |
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| 44 | 88 | .num_dapm_widgets = ARRAY_SIZE(adau7002_widgets), |
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| 45 | 89 | .dapm_routes = adau7002_routes, |
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