[linux-2.6-block.git] / sound / soc / codecs / ics43432.c

// SPDX-License-Identifier: GPL-2.0-only
/*
 * I2S MEMS microphone driver for InvenSense ICS-43432 and similar
 * MEMS-based microphones.
 *
 * - Non configurable.
 * - I2S interface, 64 BCLs per frame, 32 bits per channel, 24 bit data
 *
 * Copyright (c) 2015 Axis Communications AB
 */

#include <linux/module.h>
#include <linux/init.h>
#include <linux/slab.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/soc.h>
#include <sound/initval.h>
#include <sound/tlv.h>

#define ICS43432_RATE_MIN 7190 /* Hz, from data sheet */
#define ICS43432_RATE_MAX 52800  /* Hz, from data sheet */

#define ICS43432_FORMATS (SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32)

static struct snd_soc_dai_driver ics43432_dai = {
	.name = "ics43432-hifi",
	.capture = {
		.stream_name = "Capture",
		.channels_min = 1,
		.channels_max = 2,
		.rate_min = ICS43432_RATE_MIN,
		.rate_max = ICS43432_RATE_MAX,
		.rates = SNDRV_PCM_RATE_CONTINUOUS,
		.formats = ICS43432_FORMATS,
	},
};

static const struct snd_soc_component_driver ics43432_component_driver = {
	.idle_bias_on		= 1,
	.use_pmdown_time	= 1,
	.endianness		= 1,
	.non_legacy_dai_naming	= 1,
};

static int ics43432_probe(struct platform_device *pdev)
{
	return devm_snd_soc_register_component(&pdev->dev,
			&ics43432_component_driver,
			&ics43432_dai, 1);
}

#ifdef CONFIG_OF
static const struct of_device_id ics43432_ids[] = {
	{ .compatible = "invensense,ics43432", },
	{ .compatible = "cui,cmm-4030d-261", },
	{ }
};
MODULE_DEVICE_TABLE(of, ics43432_ids);
#endif

static struct platform_driver ics43432_driver = {
	.driver = {
		.name = "ics43432",
		.of_match_table = of_match_ptr(ics43432_ids),
	},
	.probe = ics43432_probe,
};

module_platform_driver(ics43432_driver);

MODULE_DESCRIPTION("ASoC ICS43432 driver");
MODULE_AUTHOR("Ricard Wanderlof <ricardw@axis.com>");
MODULE_LICENSE("GPL v2");
Commit	Line	Data
f8a88917	1	// SPDX-License-Identifier: GPL-2.0-only
3b7ce997	2	/*
43d2c498 AD	3	* I2S MEMS microphone driver for InvenSense ICS-43432 and similar
43d2c498 AD	4	* MEMS-based microphones.
3b7ce997 RW	5	*
	6	* - Non configurable.
	7	* - I2S interface, 64 BCLs per frame, 32 bits per channel, 24 bit data
	8	*
	9	* Copyright (c) 2015 Axis Communications AB
3b7ce997 RW	10	*/
	11
	12	#include <linux/module.h>
	13	#include <linux/init.h>
	14	#include <linux/slab.h>
	15	#include <sound/core.h>
	16	#include <sound/pcm.h>
	17	#include <sound/pcm_params.h>
	18	#include <sound/soc.h>
	19	#include <sound/initval.h>
	20	#include <sound/tlv.h>
	21
	22	#define ICS43432_RATE_MIN 7190 /* Hz, from data sheet */
	23	#define ICS43432_RATE_MAX 52800 /* Hz, from data sheet */
	24
	25	#define ICS43432_FORMATS (SNDRV_PCM_FMTBIT_S24_LE \| SNDRV_PCM_FMTBIT_S32)
	26
	27	static struct snd_soc_dai_driver ics43432_dai = {
	28	.name = "ics43432-hifi",
	29	.capture = {
	30	.stream_name = "Capture",
	31	.channels_min = 1,
	32	.channels_max = 2,
	33	.rate_min = ICS43432_RATE_MIN,
	34	.rate_max = ICS43432_RATE_MAX,
	35	.rates = SNDRV_PCM_RATE_CONTINUOUS,
	36	.formats = ICS43432_FORMATS,
	37	},
	38	};
	39
7c8d9059 KM	40	static const struct snd_soc_component_driver ics43432_component_driver = {
	41	.idle_bias_on = 1,
	42	.use_pmdown_time = 1,
	43	.endianness = 1,
	44	.non_legacy_dai_naming = 1,
3b7ce997 RW	45	};
	46
	47	static int ics43432_probe(struct platform_device *pdev)
	48	{
7c8d9059 KM	49	return devm_snd_soc_register_component(&pdev->dev,
7c8d9059 KM	50	&ics43432_component_driver,
3b7ce997 RW	51	&ics43432_dai, 1);
	52	}
	53
3b7ce997 RW	54	#ifdef CONFIG_OF
	55	static const struct of_device_id ics43432_ids[] = {
	56	{ .compatible = "invensense,ics43432", },
43d2c498	57	{ .compatible = "cui,cmm-4030d-261", },
3b7ce997 RW	58	{ }
3b7ce997 RW	59	};
b37bfdaa	60	MODULE_DEVICE_TABLE(of, ics43432_ids);
3b7ce997 RW	61	#endif
	62
	63	static struct platform_driver ics43432_driver = {
	64	.driver = {
	65	.name = "ics43432",
3b7ce997 RW	66	.of_match_table = of_match_ptr(ics43432_ids),
	67	},
	68	.probe = ics43432_probe,
3b7ce997 RW	69	};
	70
	71	module_platform_driver(ics43432_driver);
	72
	73	MODULE_DESCRIPTION("ASoC ICS43432 driver");
	74	MODULE_AUTHOR("Ricard Wanderlof <ricardw@axis.com>");
2f38bc88	75	MODULE_LICENSE("GPL v2");