LXR linux/sound/soc/codecs/ics43432.c

   1// SPDX-License-Identifier: GPL-2.0-only
   2/*
   3 * I2S MEMS microphone driver for InvenSense ICS-43432
   4 *
   5 * - Non configurable.
   6 * - I2S interface, 64 BCLs per frame, 32 bits per channel, 24 bit data
   7 *
   8 * Copyright (c) 2015 Axis Communications AB
   9 */
  10
  11#include <linux/module.h>
  12#include <linux/init.h>
  13#include <linux/slab.h>
  14#include <sound/core.h>
  15#include <sound/pcm.h>
  16#include <sound/pcm_params.h>
  17#include <sound/soc.h>
  18#include <sound/initval.h>
  19#include <sound/tlv.h>
  20
  21#define ICS43432_RATE_MIN 7190 /* Hz, from data sheet */
  22#define ICS43432_RATE_MAX 52800  /* Hz, from data sheet */
  23
  24#define ICS43432_FORMATS (SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32)
  25
  26static struct snd_soc_dai_driver ics43432_dai = {
  27        .name = "ics43432-hifi",
  28        .capture = {
  29                .stream_name = "Capture",
  30                .channels_min = 1,
  31                .channels_max = 2,
  32                .rate_min = ICS43432_RATE_MIN,
  33                .rate_max = ICS43432_RATE_MAX,
  34                .rates = SNDRV_PCM_RATE_CONTINUOUS,
  35                .formats = ICS43432_FORMATS,
  36        },
  37};
  38
  39static const struct snd_soc_component_driver ics43432_component_driver = {
  40        .idle_bias_on           = 1,
  41        .use_pmdown_time        = 1,
  42        .endianness             = 1,
  43        .non_legacy_dai_naming  = 1,
  44};
  45
  46static int ics43432_probe(struct platform_device *pdev)
  47{
  48        return devm_snd_soc_register_component(&pdev->dev,
  49                        &ics43432_component_driver,
  50                        &ics43432_dai, 1);
  51}
  52
  53#ifdef CONFIG_OF
  54static const struct of_device_id ics43432_ids[] = {
  55        { .compatible = "invensense,ics43432", },
  56        { }
  57};
  58MODULE_DEVICE_TABLE(of, ics43432_ids);
  59#endif
  60
  61static struct platform_driver ics43432_driver = {
  62        .driver = {
  63                .name = "ics43432",
  64                .of_match_table = of_match_ptr(ics43432_ids),
  65        },
  66        .probe = ics43432_probe,
  67};
  68
  69module_platform_driver(ics43432_driver);
  70
  71MODULE_DESCRIPTION("ASoC ICS43432 driver");
  72MODULE_AUTHOR("Ricard Wanderlof <ricardw@axis.com>");
  73MODULE_LICENSE("GPL v2");
  74