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73 lines
1.8 KiB
73 lines
1.8 KiB
// SPDX-License-Identifier: GPL-2.0-only |
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/* |
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* I2S MEMS microphone driver for InvenSense ICS-43432 |
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* |
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* - Non configurable. |
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* - I2S interface, 64 BCLs per frame, 32 bits per channel, 24 bit data |
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* |
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* Copyright (c) 2015 Axis Communications AB |
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*/ |
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#include <linux/module.h> |
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#include <linux/init.h> |
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#include <linux/slab.h> |
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#include <sound/core.h> |
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#include <sound/pcm.h> |
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#include <sound/pcm_params.h> |
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#include <sound/soc.h> |
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#include <sound/initval.h> |
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#include <sound/tlv.h> |
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#define ICS43432_RATE_MIN 7190 /* Hz, from data sheet */ |
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#define ICS43432_RATE_MAX 52800 /* Hz, from data sheet */ |
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#define ICS43432_FORMATS (SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32) |
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static struct snd_soc_dai_driver ics43432_dai = { |
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.name = "ics43432-hifi", |
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.capture = { |
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.stream_name = "Capture", |
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.channels_min = 1, |
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.channels_max = 2, |
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.rate_min = ICS43432_RATE_MIN, |
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.rate_max = ICS43432_RATE_MAX, |
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.rates = SNDRV_PCM_RATE_CONTINUOUS, |
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.formats = ICS43432_FORMATS, |
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}, |
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}; |
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static const struct snd_soc_component_driver ics43432_component_driver = { |
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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 ics43432_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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&ics43432_component_driver, |
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&ics43432_dai, 1); |
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} |
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#ifdef CONFIG_OF |
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static const struct of_device_id ics43432_ids[] = { |
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{ .compatible = "invensense,ics43432", }, |
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{ } |
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}; |
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MODULE_DEVICE_TABLE(of, ics43432_ids); |
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#endif |
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static struct platform_driver ics43432_driver = { |
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.driver = { |
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.name = "ics43432", |
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.of_match_table = of_match_ptr(ics43432_ids), |
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}, |
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.probe = ics43432_probe, |
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}; |
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module_platform_driver(ics43432_driver); |
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MODULE_DESCRIPTION("ASoC ICS43432 driver"); |
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MODULE_AUTHOR("Ricard Wanderlof <[email protected]>"); |
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MODULE_LICENSE("GPL v2");
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