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Commit efc4720d authored by Marek Belisko's avatar Marek Belisko Committed by Mark Brown
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ASoC: Add gtm601 codec driver



This driver add PCM interface to a GTM601 UMTS modem chip.
There is no configuration interface.

Signed-off-by: default avatarMarek Belisko <marek@goldelico.com>
Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent d770e558
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+4 −0
Original line number Diff line number Diff line
@@ -62,6 +62,7 @@ config SND_SOC_ALL_CODECS
	select SND_SOC_BT_SCO
	select SND_SOC_ES8328_SPI if SPI_MASTER
	select SND_SOC_ES8328_I2C if I2C
	select SND_SOC_GTM601
	select SND_SOC_ISABELLE if I2C
	select SND_SOC_JZ4740_CODEC
	select SND_SOC_LM4857 if I2C
@@ -446,6 +447,9 @@ config SND_SOC_ES8328_SPI
	tristate
	select SND_SOC_ES8328

config SND_SOC_GTM601
	tristate 'GTM601 UMTS modem audio codec'

config SND_SOC_ISABELLE
        tristate

+2 −0
Original line number Diff line number Diff line
@@ -55,6 +55,7 @@ snd-soc-dmic-objs := dmic.o
snd-soc-es8328-objs := es8328.o
snd-soc-es8328-i2c-objs := es8328-i2c.o
snd-soc-es8328-spi-objs := es8328-spi.o
snd-soc-gtm601-objs := gtm601.o
snd-soc-isabelle-objs := isabelle.o
snd-soc-jz4740-codec-objs := jz4740.o
snd-soc-l3-objs := l3.o
@@ -242,6 +243,7 @@ obj-$(CONFIG_SND_SOC_DMIC) += snd-soc-dmic.o
obj-$(CONFIG_SND_SOC_ES8328)	+= snd-soc-es8328.o
obj-$(CONFIG_SND_SOC_ES8328_I2C)+= snd-soc-es8328-i2c.o
obj-$(CONFIG_SND_SOC_ES8328_SPI)+= snd-soc-es8328-spi.o
obj-$(CONFIG_SND_SOC_GTM601)    += snd-soc-gtm601.o
obj-$(CONFIG_SND_SOC_ISABELLE)	+= snd-soc-isabelle.o
obj-$(CONFIG_SND_SOC_JZ4740_CODEC)	+= snd-soc-jz4740-codec.o
obj-$(CONFIG_SND_SOC_L3)	+= snd-soc-l3.o
+98 −0
Original line number Diff line number Diff line
/*
 * This is a simple driver for the GTM601 Voice PCM interface
 *
 * Copyright (C) 2015 Goldelico GmbH
 *
 * Author: Marek Belisko <marek@goldelico.com>
 *
 * Based on wm8727.c driver
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 */

#include <linux/init.h>
#include <linux/slab.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/device.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/ac97_codec.h>
#include <sound/initval.h>
#include <sound/soc.h>

static const struct snd_soc_dapm_widget gtm601_dapm_widgets[] = {
	SND_SOC_DAPM_OUTPUT("AOUT"),
	SND_SOC_DAPM_INPUT("AIN"),
};

static const struct snd_soc_dapm_route gtm601_dapm_routes[] = {
	{ "AOUT", NULL, "Playback" },
	{ "Capture", NULL, "AIN" },
};

struct snd_soc_dai_driver gtm601_dai = {
	.name = "gtm601",
	.playback = {
		.stream_name = "Playback",
		.channels_min = 1,
		.channels_max = 1,
		.rates = SNDRV_PCM_RATE_8000,
		.formats = SNDRV_PCM_FMTBIT_S16_LE,
		},
	.capture = {
		.stream_name = "Capture",
		.channels_min = 1,
		.channels_max = 1,
		.rates = SNDRV_PCM_RATE_8000,
		.formats = SNDRV_PCM_FMTBIT_S16_LE,
	},
};

static struct snd_soc_codec_driver soc_codec_dev_gtm601 = {
	.dapm_widgets = gtm601_dapm_widgets,
	.num_dapm_widgets = ARRAY_SIZE(gtm601_dapm_widgets),
	.dapm_routes = gtm601_dapm_routes,
	.num_dapm_routes = ARRAY_SIZE(gtm601_dapm_routes),
};

static int gtm601_platform_probe(struct platform_device *pdev)
{
	return snd_soc_register_codec(&pdev->dev,
			&soc_codec_dev_gtm601, &gtm601_dai, 1);
}

static int gtm601_platform_remove(struct platform_device *pdev)
{
	snd_soc_unregister_codec(&pdev->dev);
	return 0;
}

MODULE_ALIAS("platform:gtm601_codec_audio");

#if defined(CONFIG_OF)
static const struct of_device_id gtm601_codec_of_match[] = {
	{ .compatible = "option,gtm601", },
	{},
};
MODULE_DEVICE_TABLE(of, gtm601_codec_of_match);
#endif

static struct platform_driver gtm601_codec_driver = {
	.driver = {
			.name = "gtm601",
			.owner = THIS_MODULE,
			.of_match_table = of_match_ptr(gtm601_codec_of_match),
	},

	.probe = gtm601_platform_probe,
	.remove = gtm601_platform_remove,
};

module_platform_driver(gtm601_codec_driver);

MODULE_DESCRIPTION("ASoC gtm601 driver");
MODULE_AUTHOR("Marek Belisko <marek@goldelico.com>");
MODULE_LICENSE("GPL");