ASoC: fsl: add imx-es8328 machine driver

Freescale i.MX audio complex with ES8328 codec

Required properties:

- compatible       : "fsl,imx-audio-es8328"

- model            : The user-visible name of this sound complex

- ssi-controller   : The phandle of the i.MX SSI controller

- jack-gpio        : Optional GPIO for headphone jack

- audio-amp-supply : Power regulator for speaker amps

- audio-codec      : The phandle of the ES8328 audio codec

- audio-routing    : A list of the connections between audio components.

                     Each entry is a pair of strings, the first being the

		     connection's sink, the second being the connection's

		     source. Valid names could be power supplies, ES8328

		     pins, and the jacks on the board:

			Power supplies:

			   * audio-amp

			ES8328 pins:

			   * LOUT1

			   * LOUT2

			   * ROUT1

			   * ROUT2

			   * LINPUT1

			   * LINPUT2

			   * RINPUT1

			   * RINPUT2

			   * Mic PGA

			Board connectors:

			   * Headphone

			   * Speaker

			   * Mic Jack

- mux-int-port     : The internal port of the i.MX audio muxer (AUDMUX)

- mux-ext-port     : The external port of the i.MX audio muxer (AUDMIX)

Note: The AUDMUX port numbering should start at 1, which is consistent with

hardware manual.

Example:

sound {

	compatible = "fsl,imx-audio-es8328";

	model = "imx-audio-es8328";

	ssi-controller = <&ssi1>;

	audio-codec = <&codec>;

	jack-gpio = <&gpio5 15 0>;

	audio-amp-supply = <&reg_audio_amp>;

	audio-routing =

		"Speaker", "LOUT2",

		"Speaker", "ROUT2",

		"Speaker", "audio-amp",

		"Headphone", "ROUT1",

		"Headphone", "LOUT1",

		"LINPUT1", "Mic Jack",

		"RINPUT1", "Mic Jack",

		"Mic Jack", "Mic Bias";

	mux-int-port = <1>;

	mux-ext-port = <3>;

};

	  Say Y if you want to add support for SoC audio on an i.MX board with

	  a wm8962 codec.

config SND_SOC_IMX_ES8328

	tristate "SoC Audio support for i.MX boards with the ES8328 codec"

	depends on OF && (I2C || SPI)

	select SND_SOC_ES8328_I2C if I2C

	select SND_SOC_ES8328_SPI if SPI_MASTER

	select SND_SOC_IMX_PCM_DMA

	select SND_SOC_IMX_AUDMUX

	select SND_SOC_FSL_SSI

	select SND_SOC_FSL_UTILS

	select SND_SOC_IMX_PCM_FIQ

	help

	  Say Y if you want to add support for the ES8328 audio codec connected

	  via SSI/I2S over either SPI or I2C.

config SND_SOC_IMX_SGTL5000

	tristate "SoC Audio support for i.MX boards with sgtl5000"

	depends on OF && I2C

snd-soc-phycore-ac97-objs := phycore-ac97.o

snd-soc-mx27vis-aic32x4-objs := mx27vis-aic32x4.o

snd-soc-wm1133-ev1-objs := wm1133-ev1.o

snd-soc-imx-es8328-objs := imx-es8328.o

snd-soc-imx-sgtl5000-objs := imx-sgtl5000.o

snd-soc-imx-wm8962-objs := imx-wm8962.o

snd-soc-imx-spdif-objs := imx-spdif.o

obj-$(CONFIG_SND_SOC_PHYCORE_AC97) += snd-soc-phycore-ac97.o

obj-$(CONFIG_SND_SOC_MX27VIS_AIC32X4) += snd-soc-mx27vis-aic32x4.o

obj-$(CONFIG_SND_MXC_SOC_WM1133_EV1) += snd-soc-wm1133-ev1.o

obj-$(CONFIG_SND_SOC_IMX_ES8328) += snd-soc-imx-es8328.o

obj-$(CONFIG_SND_SOC_IMX_SGTL5000) += snd-soc-imx-sgtl5000.o

obj-$(CONFIG_SND_SOC_IMX_WM8962) += snd-soc-imx-wm8962.o

obj-$(CONFIG_SND_SOC_IMX_SPDIF) += snd-soc-imx-spdif.o

/*

 * Copyright 2012 Freescale Semiconductor, Inc.

 * Copyright 2012 Linaro Ltd.

 *

 * The code contained herein is licensed under the GNU General Public

 * License. You may obtain a copy of the GNU General Public License

 * Version 2 or later at the following locations:

 *

 * http://www.opensource.org/licenses/gpl-license.html

 * http://www.gnu.org/copyleft/gpl.html

 */

#include <linux/gpio.h>

#include <linux/module.h>

#include <linux/of.h>

#include <linux/of_platform.h>

#include <linux/i2c.h>

#include <linux/of_gpio.h>

#include <sound/soc.h>

#include <sound/jack.h>

#include "imx-audmux.h"

#define DAI_NAME_SIZE	32

#define MUX_PORT_MAX	7

struct imx_es8328_data {

	struct device *dev;

	struct snd_soc_dai_link dai;

	struct snd_soc_card card;

	char codec_dai_name[DAI_NAME_SIZE];

	char platform_name[DAI_NAME_SIZE];

	int jack_gpio;

};

static struct snd_soc_jack_gpio headset_jack_gpios[] = {

	{

		.gpio = -1,

		.name = "headset-gpio",

		.report = SND_JACK_HEADSET,

		.invert = 0,

		.debounce_time = 200,

	},

};

static struct snd_soc_jack headset_jack;

static int imx_es8328_dai_init(struct snd_soc_pcm_runtime *rtd)

{

	struct imx_es8328_data *data = container_of(rtd->card,

					struct imx_es8328_data, card);

	int ret = 0;

	/* Headphone jack detection */

	if (gpio_is_valid(data->jack_gpio)) {

		ret = snd_soc_jack_new(rtd->codec, "Headphone",

				       SND_JACK_HEADPHONE | SND_JACK_BTN_0,

				       &headset_jack);

		if (ret)

			return ret;

		headset_jack_gpios[0].gpio = data->jack_gpio;

		ret = snd_soc_jack_add_gpios(&headset_jack,

					     ARRAY_SIZE(headset_jack_gpios),

					     headset_jack_gpios);

	}

	return ret;

}

static const struct snd_soc_dapm_widget imx_es8328_dapm_widgets[] = {

	SND_SOC_DAPM_MIC("Mic Jack", NULL),

	SND_SOC_DAPM_HP("Headphone", NULL),

	SND_SOC_DAPM_SPK("Speaker", NULL),

	SND_SOC_DAPM_REGULATOR_SUPPLY("audio-amp", 1, 0),

};

static int imx_es8328_probe(struct platform_device *pdev)

{

	struct device_node *np = pdev->dev.of_node;

	struct device_node *ssi_np, *codec_np;

	struct platform_device *ssi_pdev;

	struct imx_es8328_data *data;

	u32 int_port, ext_port;

	int ret;

	struct device *dev = &pdev->dev;

	ret = of_property_read_u32(np, "mux-int-port", &int_port);

	if (ret) {

		dev_err(dev, "mux-int-port missing or invalid\n");

		goto fail;

	}

	if (int_port > MUX_PORT_MAX || int_port == 0) {

		dev_err(dev, "mux-int-port: hardware only has %d mux ports\n",

			MUX_PORT_MAX);

		goto fail;

	}

	ret = of_property_read_u32(np, "mux-ext-port", &ext_port);

	if (ret) {

		dev_err(dev, "mux-ext-port missing or invalid\n");

		goto fail;

	}

	if (ext_port > MUX_PORT_MAX || ext_port == 0) {

		dev_err(dev, "mux-ext-port: hardware only has %d mux ports\n",

			MUX_PORT_MAX);

		goto fail;

	}

	/*

	 * The port numbering in the hardware manual starts at 1, while

	 * the audmux API expects it starts at 0.

	 */

	int_port--;

	ext_port--;

	ret = imx_audmux_v2_configure_port(int_port,

			IMX_AUDMUX_V2_PTCR_SYN |

			IMX_AUDMUX_V2_PTCR_TFSEL(ext_port) |

			IMX_AUDMUX_V2_PTCR_TCSEL(ext_port) |

			IMX_AUDMUX_V2_PTCR_TFSDIR |

			IMX_AUDMUX_V2_PTCR_TCLKDIR,

			IMX_AUDMUX_V2_PDCR_RXDSEL(ext_port));

	if (ret) {

		dev_err(dev, "audmux internal port setup failed\n");

		return ret;

	}

	ret = imx_audmux_v2_configure_port(ext_port,

			IMX_AUDMUX_V2_PTCR_SYN,

			IMX_AUDMUX_V2_PDCR_RXDSEL(int_port));

	if (ret) {

		dev_err(dev, "audmux external port setup failed\n");

		return ret;

	}

	ssi_np = of_parse_phandle(pdev->dev.of_node, "ssi-controller", 0);

	codec_np = of_parse_phandle(pdev->dev.of_node, "audio-codec", 0);

	if (!ssi_np || !codec_np) {

		dev_err(dev, "phandle missing or invalid\n");

		ret = -EINVAL;

		goto fail;

	}

	ssi_pdev = of_find_device_by_node(ssi_np);

	if (!ssi_pdev) {

		dev_err(dev, "failed to find SSI platform device\n");

		ret = -EINVAL;

		goto fail;

	}

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

	if (!data) {

		ret = -ENOMEM;

		goto fail;

	}

	data->dev = dev;

	data->jack_gpio = of_get_named_gpio(pdev->dev.of_node, "jack-gpio", 0);

	data->dai.name = "hifi";

	data->dai.stream_name = "hifi";

	data->dai.codec_dai_name = "es8328-hifi-analog";

	data->dai.codec_of_node = codec_np;

	data->dai.cpu_of_node = ssi_np;

	data->dai.platform_of_node = ssi_np;

	data->dai.init = &imx_es8328_dai_init;

	data->dai.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |

			    SND_SOC_DAIFMT_CBM_CFM;

	data->card.dev = dev;

	data->card.dapm_widgets = imx_es8328_dapm_widgets;

	data->card.num_dapm_widgets = ARRAY_SIZE(imx_es8328_dapm_widgets);

	ret = snd_soc_of_parse_card_name(&data->card, "model");

	if (ret) {

		dev_err(dev, "Unable to parse card name\n");

		goto fail;

	}

	ret = snd_soc_of_parse_audio_routing(&data->card, "audio-routing");

	if (ret) {

		dev_err(dev, "Unable to parse routing: %d\n", ret);

		goto fail;

	}

	data->card.num_links = 1;

	data->card.owner = THIS_MODULE;

	data->card.dai_link = &data->dai;

	ret = snd_soc_register_card(&data->card);

	if (ret) {

		dev_err(dev, "Unable to register: %d\n", ret);

		goto fail;

	}

	platform_set_drvdata(pdev, data);

fail:

	of_node_put(ssi_np);

	of_node_put(codec_np);

	return ret;

}

static int imx_es8328_remove(struct platform_device *pdev)

{

	struct imx_es8328_data *data = platform_get_drvdata(pdev);

	snd_soc_jack_free_gpios(&headset_jack, ARRAY_SIZE(headset_jack_gpios),

				headset_jack_gpios);

	snd_soc_unregister_card(&data->card);

	return 0;

}

static const struct of_device_id imx_es8328_dt_ids[] = {

	{ .compatible = "fsl,imx-audio-es8328", },

	{ /* sentinel */ }

};

MODULE_DEVICE_TABLE(of, imx_es8328_dt_ids);

static struct platform_driver imx_es8328_driver = {

	.driver = {

		.name = "imx-es8328",

		.of_match_table = imx_es8328_dt_ids,

	},

	.probe = imx_es8328_probe,

	.remove = imx_es8328_remove,

};

module_platform_driver(imx_es8328_driver);

MODULE_AUTHOR("Sean Cross <xobs@kosagi.com>");

MODULE_DESCRIPTION("Kosagi i.MX6 ES8328 ASoC machine driver");

MODULE_LICENSE("GPL v2");

MODULE_ALIAS("platform:imx-audio-es8328");