ASoC: rockchip: Add machine driver for max98090 codec

ROCKCHIP with MAX98090 CODEC

Required properties:

- compatible: "rockchip,rockchip-audio-max98090"

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

- rockchip,i2s-controller: The phandle of the Rockchip I2S controller that's

  connected to the CODEC

- rockchip,audio-codec: The phandle of the MAX98090 audio codec

- rockchip,headset-codec: The phandle of Ext chip for jack detection

Example:

sound {

	compatible = "rockchip,rockchip-audio-max98090";

	rockchip,model = "ROCKCHIP-I2S";

	rockchip,i2s-controller = <&i2s>;

	rockchip,audio-codec = <&max98090>;

	rockchip,headset-codec = <&headsetcodec>;

};

	  Say Y or M if you want to add support for I2S driver for

	  Rockchip I2S device. The device supports upto maximum of

	  8 channels each for play and record.

config SND_SOC_ROCKCHIP_MAX98090

	tristate "ASoC support for Rockchip boards using a MAX98090 codec"

	depends on SND_SOC_ROCKCHIP && I2C && GPIOLIB

	select SND_SOC_ROCKCHIP_I2S

	select SND_SOC_MAX98090

	select SND_SOC_TS3A227E

	help

	  Say Y or M here if you want to add support for SoC audio on Rockchip

	  boards using the MAX98090 codec, such as Veyron.

snd-soc-i2s-objs := rockchip_i2s.o

obj-$(CONFIG_SND_SOC_ROCKCHIP_I2S) += snd-soc-i2s.o

snd-soc-rockchip-max98090-objs := rockchip_max98090.o

obj-$(CONFIG_SND_SOC_ROCKCHIP_MAX98090) += snd-soc-rockchip-max98090.o

/*

 * Rockchip machine ASoC driver for boards using a MAX90809 CODEC.

 *

 * Copyright (c) 2014, ROCKCHIP CORPORATION.  All rights reserved.

 *

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

 * under the terms and conditions of the GNU General Public License,

 * version 2, as published by the Free Software Foundation.

 *

 * This program is distributed in the hope 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/>.

 *

 */

#include <linux/module.h>

#include <linux/platform_device.h>

#include <linux/slab.h>

#include <linux/gpio.h>

#include <linux/of_gpio.h>

#include <sound/core.h>

#include <sound/jack.h>

#include <sound/pcm.h>

#include <sound/pcm_params.h>

#include <sound/soc.h>

#include "rockchip_i2s.h"

#include "../codecs/ts3a227e.h"

#define DRV_NAME "rockchip-snd-max98090"

static struct snd_soc_jack headset_jack;

static struct snd_soc_jack_pin headset_jack_pins[] = {

	{

		.pin = "Headset Jack",

		.mask = SND_JACK_HEADPHONE | SND_JACK_MICROPHONE |

			SND_JACK_BTN_0 | SND_JACK_BTN_1 |

			SND_JACK_BTN_2 | SND_JACK_BTN_3,

	},

};

static const struct snd_soc_dapm_widget rk_dapm_widgets[] = {

	SND_SOC_DAPM_HP("Headphone", NULL),

	SND_SOC_DAPM_MIC("Headset Mic", NULL),

	SND_SOC_DAPM_MIC("Int Mic", NULL),

	SND_SOC_DAPM_SPK("Speaker", NULL),

};

static const struct snd_soc_dapm_route rk_audio_map[] = {

	{"IN34", NULL, "Headset Mic"},

	{"IN34", NULL, "MICBIAS"},

	{"MICBIAS", NULL, "Headset Mic"},

	{"DMICL", NULL, "Int Mic"},

	{"Headphone", NULL, "HPL"},

	{"Headphone", NULL, "HPR"},

	{"Speaker", NULL, "SPKL"},

	{"Speaker", NULL, "SPKR"},

};

static const struct snd_kcontrol_new rk_mc_controls[] = {

	SOC_DAPM_PIN_SWITCH("Headphone"),

	SOC_DAPM_PIN_SWITCH("Headset Mic"),

	SOC_DAPM_PIN_SWITCH("Int Mic"),

	SOC_DAPM_PIN_SWITCH("Speaker"),

};

static int rk_aif1_hw_params(struct snd_pcm_substream *substream,

			     struct snd_pcm_hw_params *params)

{

	int ret = 0;

	struct snd_soc_pcm_runtime *rtd = substream->private_data;

	struct snd_soc_dai *cpu_dai = rtd->cpu_dai;

	struct snd_soc_dai *codec_dai = rtd->codec_dai;

	int mclk;

	switch (params_rate(params)) {

	case 8000:

	case 16000:

	case 48000:

	case 96000:

		mclk = 12288000;

		break;

	case 44100:

		mclk = 11289600;

		break;

	default:

		return -EINVAL;

	}

	ret = snd_soc_dai_set_sysclk(cpu_dai, 0, mclk,

				     SND_SOC_CLOCK_OUT);

	if (ret < 0) {

		dev_err(codec_dai->dev, "Can't set codec clock %d\n", ret);

		return ret;

	}

	ret = snd_soc_dai_set_sysclk(codec_dai, 0, mclk,

				     SND_SOC_CLOCK_IN);

	if (ret < 0) {

		dev_err(codec_dai->dev, "Can't set codec clock %d\n", ret);

		return ret;

	}

	return ret;

}

static int rk_init(struct snd_soc_pcm_runtime *runtime)

{

	/* Enable Headset and 4 Buttons Jack detection */

	return snd_soc_card_jack_new(runtime->card, "Headset Jack",

			       SND_JACK_HEADSET |

			       SND_JACK_BTN_0 | SND_JACK_BTN_1 |

			       SND_JACK_BTN_2 | SND_JACK_BTN_3,

			       &headset_jack,

			       headset_jack_pins,

			       ARRAY_SIZE(headset_jack_pins));

}

static int rk_98090_headset_init(struct snd_soc_component *component)

{

	return ts3a227e_enable_jack_detect(component, &headset_jack);

}

static struct snd_soc_ops rk_aif1_ops = {

	.hw_params = rk_aif1_hw_params,

};

static struct snd_soc_aux_dev rk_98090_headset_dev = {

	.name = "Headset Chip",

	.init = rk_98090_headset_init,

};

static struct snd_soc_dai_link rk_dailink = {

	.name = "max98090",

	.stream_name = "Audio",

	.codec_dai_name = "HiFi",

	.init = rk_init,

	.ops = &rk_aif1_ops,

	/* set max98090 as slave */

	.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |

		SND_SOC_DAIFMT_CBS_CFS,

};

static struct snd_soc_card snd_soc_card_rk = {

	.name = "ROCKCHIP-I2S",

	.dai_link = &rk_dailink,

	.num_links = 1,

	.aux_dev = &rk_98090_headset_dev,

	.num_aux_devs = 1,

	.dapm_widgets = rk_dapm_widgets,

	.num_dapm_widgets = ARRAY_SIZE(rk_dapm_widgets),

	.dapm_routes = rk_audio_map,

	.num_dapm_routes = ARRAY_SIZE(rk_audio_map),

	.controls = rk_mc_controls,

	.num_controls = ARRAY_SIZE(rk_mc_controls),

};

static int snd_rk_mc_probe(struct platform_device *pdev)

{

	int ret = 0;

	struct snd_soc_card *card = &snd_soc_card_rk;

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

	/* register the soc card */

	card->dev = &pdev->dev;

	rk_dailink.codec_of_node = of_parse_phandle(np,

			"rockchip,audio-codec", 0);

	if (!rk_dailink.codec_of_node) {

		dev_err(&pdev->dev,

			"Property 'rockchip,audio-codec' missing or invalid\n");

		return -EINVAL;

	}

	rk_dailink.cpu_of_node = of_parse_phandle(np,

			"rockchip,i2s-controller", 0);

	if (!rk_dailink.cpu_of_node) {

		dev_err(&pdev->dev,

			"Property 'rockchip,i2s-controller' missing or invalid\n");

		return -EINVAL;

	}

	rk_dailink.platform_of_node = rk_dailink.cpu_of_node;

	rk_98090_headset_dev.codec_of_node = of_parse_phandle(np,

			"rockchip,headset-codec", 0);

	if (!rk_98090_headset_dev.codec_of_node) {

		dev_err(&pdev->dev,

			"Property 'rockchip,headset-codec' missing/invalid\n");

		return -EINVAL;

	}

	ret = snd_soc_of_parse_card_name(card, "rockchip,model");

	if (ret) {

		dev_err(&pdev->dev,

			"Soc parse card name failed %d\n", ret);

		return ret;

	}

	ret = devm_snd_soc_register_card(&pdev->dev, card);

	if (ret) {

		dev_err(&pdev->dev,

			"Soc register card failed %d\n", ret);

		return ret;

	}

	return ret;

}

static const struct of_device_id rockchip_max98090_of_match[] = {

	{ .compatible = "rockchip,rockchip-audio-max98090", },

	{},

};

MODULE_DEVICE_TABLE(of, rockchip_max98090_of_match);

static struct platform_driver snd_rk_mc_driver = {

	.probe = snd_rk_mc_probe,

	.driver = {

		.name = DRV_NAME,

		.owner = THIS_MODULE,

		.pm = &snd_soc_pm_ops,

		.of_match_table = rockchip_max98090_of_match,

	},

};

module_platform_driver(snd_rk_mc_driver);

MODULE_AUTHOR("jianqun <jay.xu@rock-chips.com>");

MODULE_DESCRIPTION("Rockchip max98090 machine ASoC driver");

MODULE_LICENSE("GPL v2");

MODULE_ALIAS("platform:" DRV_NAME);