[linux-2.6-block.git] / sound / soc / codecs / max98357a.c

/* Copyright (c) 2010-2011,2013-2015 The Linux Foundation. All rights reserved.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 and
 * only version 2 as published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * max98357a.c -- MAX98357A ALSA SoC Codec driver
 */

#include <linux/acpi.h>
#include <linux/device.h>
#include <linux/err.h>
#include <linux/gpio.h>
#include <linux/gpio/consumer.h>
#include <linux/kernel.h>
#include <linux/mod_devicetable.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/platform_device.h>
#include <sound/pcm.h>
#include <sound/soc.h>
#include <sound/soc-dai.h>
#include <sound/soc-dapm.h>

static int max98357a_daiops_trigger(struct snd_pcm_substream *substream,
		int cmd, struct snd_soc_dai *dai)
{
	struct gpio_desc *sdmode = snd_soc_dai_get_drvdata(dai);

	if (!sdmode)
		return 0;

	switch (cmd) {
	case SNDRV_PCM_TRIGGER_START:
	case SNDRV_PCM_TRIGGER_RESUME:
	case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
		gpiod_set_value(sdmode, 1);
		break;
	case SNDRV_PCM_TRIGGER_STOP:
	case SNDRV_PCM_TRIGGER_SUSPEND:
	case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
		gpiod_set_value(sdmode, 0);
		break;
	}

	return 0;
}

static const struct snd_soc_dapm_widget max98357a_dapm_widgets[] = {
	SND_SOC_DAPM_OUTPUT("Speaker"),
};

static const struct snd_soc_dapm_route max98357a_dapm_routes[] = {
	{"Speaker", NULL, "HiFi Playback"},
};

static int max98357a_codec_probe(struct snd_soc_codec *codec)
{
	struct gpio_desc *sdmode;

	sdmode = devm_gpiod_get_optional(codec->dev, "sdmode", GPIOD_OUT_LOW);
	if (IS_ERR(sdmode))
		return PTR_ERR(sdmode);

	snd_soc_codec_set_drvdata(codec, sdmode);

	return 0;
}

static struct snd_soc_codec_driver max98357a_codec_driver = {
	.probe			= max98357a_codec_probe,
	.dapm_widgets		= max98357a_dapm_widgets,
	.num_dapm_widgets	= ARRAY_SIZE(max98357a_dapm_widgets),
	.dapm_routes		= max98357a_dapm_routes,
	.num_dapm_routes	= ARRAY_SIZE(max98357a_dapm_routes),
};

static const struct snd_soc_dai_ops max98357a_dai_ops = {
	.trigger	= max98357a_daiops_trigger,
};

static struct snd_soc_dai_driver max98357a_dai_driver = {
	.name = "HiFi",
	.playback = {
		.stream_name	= "HiFi Playback",
		.formats	= SNDRV_PCM_FMTBIT_S16 |
					SNDRV_PCM_FMTBIT_S24 |
					SNDRV_PCM_FMTBIT_S32,
		.rates		= SNDRV_PCM_RATE_8000 |
					SNDRV_PCM_RATE_16000 |
					SNDRV_PCM_RATE_48000 |
					SNDRV_PCM_RATE_96000,
		.rate_min	= 8000,
		.rate_max	= 96000,
		.channels_min	= 1,
		.channels_max	= 2,
	},
	.ops    = &max98357a_dai_ops,
};

static int max98357a_platform_probe(struct platform_device *pdev)
{
	return snd_soc_register_codec(&pdev->dev, &max98357a_codec_driver,
			&max98357a_dai_driver, 1);
}

static int max98357a_platform_remove(struct platform_device *pdev)
{
	snd_soc_unregister_codec(&pdev->dev);

	return 0;
}

#ifdef CONFIG_OF
static const struct of_device_id max98357a_device_id[] = {
	{ .compatible = "maxim,max98357a" },
	{}
};
MODULE_DEVICE_TABLE(of, max98357a_device_id);
#endif

#ifdef CONFIG_ACPI
static const struct acpi_device_id max98357a_acpi_match[] = {
	{ "MX98357A", 0 },
	{},
};
MODULE_DEVICE_TABLE(acpi, max98357a_acpi_match);
#endif

static struct platform_driver max98357a_platform_driver = {
	.driver = {
		.name = "max98357a",
		.of_match_table = of_match_ptr(max98357a_device_id),
		.acpi_match_table = ACPI_PTR(max98357a_acpi_match),
	},
	.probe	= max98357a_platform_probe,
	.remove = max98357a_platform_remove,
};
module_platform_driver(max98357a_platform_driver);

MODULE_DESCRIPTION("Maxim MAX98357A Codec Driver");
MODULE_LICENSE("GPL v2");
Commit	Line	Data
af5adf12 KW	1	/* Copyright (c) 2010-2011,2013-2015 The Linux Foundation. All rights reserved.
	2	*
	3	* This program is free software; you can redistribute it and/or modify
	4	* it under the terms of the GNU General Public License version 2 and
	5	* only version 2 as published by the Free Software Foundation.
	6	*
	7	* This program is distributed in the hope that it will be useful,
	8	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	9	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	10	* GNU General Public License for more details.
	11	*
	12	* max98357a.c -- MAX98357A ALSA SoC Codec driver
	13	*/
	14
5c27087e	15	#include <linux/acpi.h>
08d0a55c KW	16	#include <linux/device.h>
08d0a55c KW	17	#include <linux/err.h>
af5adf12	18	#include <linux/gpio.h>
5c8be987	19	#include <linux/gpio/consumer.h>
08d0a55c KW	20	#include <linux/kernel.h>
	21	#include <linux/mod_devicetable.h>
	22	#include <linux/module.h>
	23	#include <linux/of.h>
	24	#include <linux/platform_device.h>
	25	#include <sound/pcm.h>
af5adf12	26	#include <sound/soc.h>
08d0a55c KW	27	#include <sound/soc-dai.h>
08d0a55c KW	28	#include <sound/soc-dapm.h>
af5adf12	29
af5adf12 KW	30	static int max98357a_daiops_trigger(struct snd_pcm_substream *substream,
	31	int cmd, struct snd_soc_dai *dai)
	32	{
	33	struct gpio_desc *sdmode = snd_soc_dai_get_drvdata(dai);
	34
5119222f AP	35	if (!sdmode)
	36	return 0;
	37
af5adf12 KW	38	switch (cmd) {
	39	case SNDRV_PCM_TRIGGER_START:
	40	case SNDRV_PCM_TRIGGER_RESUME:
	41	case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
	42	gpiod_set_value(sdmode, 1);
	43	break;
	44	case SNDRV_PCM_TRIGGER_STOP:
	45	case SNDRV_PCM_TRIGGER_SUSPEND:
	46	case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
	47	gpiod_set_value(sdmode, 0);
	48	break;
	49	}
	50
	51	return 0;
	52	}
	53
	54	static const struct snd_soc_dapm_widget max98357a_dapm_widgets[] = {
af5adf12 KW	55	SND_SOC_DAPM_OUTPUT("Speaker"),
	56	};
	57
	58	static const struct snd_soc_dapm_route max98357a_dapm_routes[] = {
508e6195	59	{"Speaker", NULL, "HiFi Playback"},
af5adf12 KW	60	};
	61
	62	static int max98357a_codec_probe(struct snd_soc_codec *codec)
	63	{
	64	struct gpio_desc *sdmode;
	65
5119222f	66	sdmode = devm_gpiod_get_optional(codec->dev, "sdmode", GPIOD_OUT_LOW);
4ab0c591	67	if (IS_ERR(sdmode))
af5adf12	68	return PTR_ERR(sdmode);
4ab0c591	69
af5adf12 KW	70	snd_soc_codec_set_drvdata(codec, sdmode);
	71
	72	return 0;
	73	}
	74
	75	static struct snd_soc_codec_driver max98357a_codec_driver = {
	76	.probe = max98357a_codec_probe,
	77	.dapm_widgets = max98357a_dapm_widgets,
	78	.num_dapm_widgets = ARRAY_SIZE(max98357a_dapm_widgets),
	79	.dapm_routes = max98357a_dapm_routes,
	80	.num_dapm_routes = ARRAY_SIZE(max98357a_dapm_routes),
	81	};
	82
64793047	83	static const struct snd_soc_dai_ops max98357a_dai_ops = {
af5adf12 KW	84	.trigger = max98357a_daiops_trigger,
	85	};
	86
	87	static struct snd_soc_dai_driver max98357a_dai_driver = {
92b2ad2c	88	.name = "HiFi",
af5adf12	89	.playback = {
92b2ad2c	90	.stream_name = "HiFi Playback",
af5adf12 KW	91	.formats = SNDRV_PCM_FMTBIT_S16 \|
	92	SNDRV_PCM_FMTBIT_S24 \|
	93	SNDRV_PCM_FMTBIT_S32,
	94	.rates = SNDRV_PCM_RATE_8000 \|
	95	SNDRV_PCM_RATE_16000 \|
	96	SNDRV_PCM_RATE_48000 \|
	97	SNDRV_PCM_RATE_96000,
	98	.rate_min = 8000,
	99	.rate_max = 96000,
	100	.channels_min = 1,
	101	.channels_max = 2,
	102	},
	103	.ops = &max98357a_dai_ops,
	104	};
	105
	106	static int max98357a_platform_probe(struct platform_device *pdev)
	107	{
4ab0c591	108	return snd_soc_register_codec(&pdev->dev, &max98357a_codec_driver,
af5adf12	109	&max98357a_dai_driver, 1);
af5adf12 KW	110	}
	111
	112	static int max98357a_platform_remove(struct platform_device *pdev)
	113	{
	114	snd_soc_unregister_codec(&pdev->dev);
	115
	116	return 0;
	117	}
	118
	119	#ifdef CONFIG_OF
	120	static const struct of_device_id max98357a_device_id[] = {
7ff5eabc	121	{ .compatible = "maxim,max98357a" },
af5adf12 KW	122	{}
af5adf12 KW	123	};
3efa130d	124	MODULE_DEVICE_TABLE(of, max98357a_device_id);
af5adf12 KW	125	#endif
af5adf12 KW	126
5c27087e RA	127	#ifdef CONFIG_ACPI
	128	static const struct acpi_device_id max98357a_acpi_match[] = {
	129	{ "MX98357A", 0 },
	130	{},
	131	};
	132	MODULE_DEVICE_TABLE(acpi, max98357a_acpi_match);
	133	#endif
	134
af5adf12 KW	135	static struct platform_driver max98357a_platform_driver = {
af5adf12 KW	136	.driver = {
7ff5eabc	137	.name = "max98357a",
af5adf12	138	.of_match_table = of_match_ptr(max98357a_device_id),
5c27087e	139	.acpi_match_table = ACPI_PTR(max98357a_acpi_match),
af5adf12 KW	140	},
	141	.probe = max98357a_platform_probe,
	142	.remove = max98357a_platform_remove,
	143	};
	144	module_platform_driver(max98357a_platform_driver);
	145
	146	MODULE_DESCRIPTION("Maxim MAX98357A Codec Driver");
	147	MODULE_LICENSE("GPL v2");