Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 85825d5e authored by Jerome Brunet's avatar Jerome Brunet Committed by Mark Brown
Browse files

ASoC: dio2125: add dio2125 amp driver 



The dio2125 is a stereo output driver with adjustable gain.

Signed-off-by: default avatarJerome Brunet <jbrunet@baylibre.com>
Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent c1ae3cfa

sound/soc/codecs/Kconfig

+5 −0
Original line number Diff line number Diff line
@@ -69,6 +69,7 @@ config SND_SOC_ALL_CODECS 
	select SND_SOC_DA7219 if I2C

	select SND_SOC_DA732X if I2C

	select SND_SOC_DA9055 if I2C

	select SND_SOC_DIO2125

	select SND_SOC_DMIC

	select SND_SOC_ES8328_SPI if SPI_MASTER

	select SND_SOC_ES8328_I2C if I2C
@@ -516,6 +517,10 @@ config SND_SOC_DA732X 
config SND_SOC_DA9055

	tristate



config SND_SOC_DIO2125

	tristate "Dioo DIO2125 Amplifier"

	select GPIOLIB



config SND_SOC_DMIC

	tristate

sound/soc/codecs/Makefile

+2 −0
Original line number Diff line number Diff line
@@ -221,6 +221,7 @@ snd-soc-wm9712-objs := wm9712.o 
snd-soc-wm9713-objs := wm9713.o

snd-soc-wm-hubs-objs := wm_hubs.o

# Amp

snd-soc-dio2125-objs := dio2125.o

snd-soc-max9877-objs := max9877.o

snd-soc-max98504-objs := max98504.o

snd-soc-tpa6130a2-objs := tpa6130a2.o
@@ -448,6 +449,7 @@ obj-$(CONFIG_SND_SOC_WM_ADSP) += snd-soc-wm-adsp.o 
obj-$(CONFIG_SND_SOC_WM_HUBS)	+= snd-soc-wm-hubs.o



# Amp

obj-$(CONFIG_SND_SOC_DIO2125)	+= snd-soc-dio2125.o

obj-$(CONFIG_SND_SOC_MAX9877)	+= snd-soc-max9877.o

obj-$(CONFIG_SND_SOC_MAX98504)	+= snd-soc-max98504.o

obj-$(CONFIG_SND_SOC_TPA6130A2)	+= snd-soc-tpa6130a2.o

sound/soc/codecs/dio2125.c

0 → 100644
+120 −0
Original line number Diff line number Diff line 
/*

 * Copyright (c) 2017 BayLibre, SAS.

 * Author: Jerome Brunet <jbrunet@baylibre.com>

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of version 2 of the GNU General Public License 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.

 *

 * You should have received a copy of the GNU General Public License

 * along with this program; if not, see <http://www.gnu.org/licenses/>.

 * The full GNU General Public License is included in this distribution

 * in the file called COPYING.

 */



#include <linux/gpio/consumer.h>

#include <linux/module.h>

#include <sound/soc.h>



#define DRV_NAME "dio2125"



struct dio2125 {

	struct gpio_desc *gpiod_enable;

};



static int drv_event(struct snd_soc_dapm_widget *w,

		     struct snd_kcontrol *control, int event)

{

	struct snd_soc_component *c = snd_soc_dapm_to_component(w->dapm);

	struct dio2125 *priv = snd_soc_component_get_drvdata(c);

	int val;



	switch (event) {

	case SND_SOC_DAPM_POST_PMU:

		val = 1;

		break;

	case SND_SOC_DAPM_PRE_PMD:

		val = 0;

		break;

	default:

		WARN(1, "Unexpected event");

		return -EINVAL;

	}



	gpiod_set_value(priv->gpiod_enable, val);



	return 0;

}



static const struct snd_soc_dapm_widget dio2125_dapm_widgets[] = {

	SND_SOC_DAPM_INPUT("INL"),

	SND_SOC_DAPM_INPUT("INR"),

	SND_SOC_DAPM_OUT_DRV_E("DRV", SND_SOC_NOPM, 0, 0, NULL, 0, drv_event,

			       (SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD)),

	SND_SOC_DAPM_OUTPUT("OUTL"),

	SND_SOC_DAPM_OUTPUT("OUTR"),

};



static const struct snd_soc_dapm_route dio2125_dapm_routes[] = {

	{ "DRV", NULL, "INL" },

	{ "DRV", NULL, "INR" },

	{ "OUTL", NULL, "DRV" },

	{ "OUTR", NULL, "DRV" },

};



static const struct snd_soc_component_driver dio2125_component_driver = {

	.dapm_widgets		= dio2125_dapm_widgets,

	.num_dapm_widgets	= ARRAY_SIZE(dio2125_dapm_widgets),

	.dapm_routes		= dio2125_dapm_routes,

	.num_dapm_routes	= ARRAY_SIZE(dio2125_dapm_routes),

};



static int dio2125_probe(struct platform_device *pdev)

{

	struct device *dev = &pdev->dev;

	struct dio2125 *priv;

	int err;



	priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);

	if (priv == NULL)

		return -ENOMEM;

	platform_set_drvdata(pdev, priv);



	priv->gpiod_enable = devm_gpiod_get(dev, "enable", GPIOD_OUT_LOW);

	if (IS_ERR(priv->gpiod_enable)) {

		err = PTR_ERR(priv->gpiod_enable);

		if (err != -EPROBE_DEFER)

			dev_err(dev, "Failed to get 'enable' gpio: %d", err);

		return err;

	}



	return devm_snd_soc_register_component(dev, &dio2125_component_driver,

					       NULL, 0);

}



#ifdef CONFIG_OF

static const struct of_device_id dio2125_ids[] = {

	{ .compatible = "dioo,dio2125", },

	{ }

};

MODULE_DEVICE_TABLE(of, dio2125_ids);

#endif



static struct platform_driver dio2125_driver = {

	.driver = {

		.name = DRV_NAME,

		.of_match_table = of_match_ptr(dio2125_ids),

	},

	.probe = dio2125_probe,

};



module_platform_driver(dio2125_driver);



MODULE_DESCRIPTION("ASoC DIO2125 output driver");

MODULE_AUTHOR("Jerome Brunet <jbrunet@baylibre.com>");

MODULE_LICENSE("GPL");