sound/soc/tegra/tegra_rt5640.c - linux - Git at Google

 /*
 * tegra_rt5640.c - Tegra machine ASoC driver for boards using WM8903 codec.
  *
  * Copyright (c) 2013, NVIDIA 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/>.
  *
  * Based on code copyright/by:
  *
  * Copyright (C) 2010-2012 - NVIDIA, Inc.
  * Copyright (C) 2011 The AC100 Kernel Team <ac100@lists.lauchpad.net>
  * (c) 2009, 2010 Nvidia Graphics Pvt. Ltd.
  * Copyright 2007 Wolfson Microelectronics PLC.
  */

 #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 "../codecs/rt5640.h"

 #include "tegra_asoc_utils.h"

 #define DRV_NAME "tegra-snd-rt5640"

 struct tegra_rt5640 {
 	struct tegra_asoc_utils_data util_data;
 	int gpio_hp_det;
 };

 static int tegra_rt5640_asoc_hw_params(struct snd_pcm_substream *substream,
 					struct snd_pcm_hw_params *params)
 {
 	struct snd_soc_pcm_runtime *rtd = substream->private_data;
 	struct snd_soc_dai *codec_dai = rtd->codec_dai;
 	struct snd_soc_card *card = rtd->card;
 	struct tegra_rt5640 *machine = snd_soc_card_get_drvdata(card);
 	int srate, mclk;
 	int err;

 	srate = params_rate(params);
 	mclk = 256 * srate;

 	err = tegra_asoc_utils_set_rate(&machine->util_data, srate, mclk);
 	if (err < 0) {
 		dev_err(card->dev, "Can't configure clocks\n");
 		return err;
 	}

 	err = snd_soc_dai_set_sysclk(codec_dai, RT5640_SCLK_S_MCLK, mclk,
 					SND_SOC_CLOCK_IN);
 	if (err < 0) {
 		dev_err(card->dev, "codec_dai clock not set\n");
 		return err;
 	}

 	return 0;
 }

 static struct snd_soc_ops tegra_rt5640_ops = {
 	.hw_params = tegra_rt5640_asoc_hw_params,
 };

 static struct snd_soc_jack tegra_rt5640_hp_jack;

 static struct snd_soc_jack_pin tegra_rt5640_hp_jack_pins[] = {
 	{
 		.pin = "Headphones",
 		.mask = SND_JACK_HEADPHONE,
 	},
 };

 static struct snd_soc_jack_gpio tegra_rt5640_hp_jack_gpio = {
 	.name = "Headphone detection",
 	.report = SND_JACK_HEADPHONE,
 	.debounce_time = 150,
 	.invert = 1,
 };

 static const struct snd_soc_dapm_widget tegra_rt5640_dapm_widgets[] = {
 	SND_SOC_DAPM_HP("Headphones", NULL),
 	SND_SOC_DAPM_SPK("Speakers", NULL),
 	SND_SOC_DAPM_MIC("Mic Jack", NULL),
 };

 static const struct snd_kcontrol_new tegra_rt5640_controls[] = {
 	SOC_DAPM_PIN_SWITCH("Speakers"),
 };

 static int tegra_rt5640_asoc_init(struct snd_soc_pcm_runtime *rtd)
 {
 	struct snd_soc_dai *codec_dai = rtd->codec_dai;
 	struct snd_soc_codec *codec = codec_dai->codec;
 	struct tegra_rt5640 *machine = snd_soc_card_get_drvdata(rtd->card);

 	snd_soc_jack_new(codec, "Headphones", SND_JACK_HEADPHONE,
 			 &tegra_rt5640_hp_jack);
 	snd_soc_jack_add_pins(&tegra_rt5640_hp_jack,
 			ARRAY_SIZE(tegra_rt5640_hp_jack_pins),
 			tegra_rt5640_hp_jack_pins);

 	if (gpio_is_valid(machine->gpio_hp_det)) {
 		tegra_rt5640_hp_jack_gpio.gpio = machine->gpio_hp_det;
 		snd_soc_jack_add_gpios(&tegra_rt5640_hp_jack,
 						1,
 						&tegra_rt5640_hp_jack_gpio);
 	}

 	return 0;
 }

 static int tegra_rt5640_card_remove(struct snd_soc_card *card)
 {
 	struct tegra_rt5640 *machine = snd_soc_card_get_drvdata(card);

 	if (gpio_is_valid(machine->gpio_hp_det)) {
 		snd_soc_jack_free_gpios(&tegra_rt5640_hp_jack, 1,
 					&tegra_rt5640_hp_jack_gpio);
 	}

 	return 0;
 }

 static struct snd_soc_dai_link tegra_rt5640_dai = {
 	.name = "RT5640",
 	.stream_name = "RT5640 PCM",
 	.codec_dai_name = "rt5640-aif1",
 	.init = tegra_rt5640_asoc_init,
 	.ops = &tegra_rt5640_ops,
 	.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
 			SND_SOC_DAIFMT_CBS_CFS,
 };

 static struct snd_soc_card snd_soc_tegra_rt5640 = {
 	.name = "tegra-rt5640",
 	.owner = THIS_MODULE,
 	.remove = tegra_rt5640_card_remove,
 	.dai_link = &tegra_rt5640_dai,
 	.num_links = 1,
 	.controls = tegra_rt5640_controls,
 	.num_controls = ARRAY_SIZE(tegra_rt5640_controls),
 	.dapm_widgets = tegra_rt5640_dapm_widgets,
 	.num_dapm_widgets = ARRAY_SIZE(tegra_rt5640_dapm_widgets),
 	.fully_routed = true,
 };

 static int tegra_rt5640_probe(struct platform_device *pdev)
 {
 	struct device_node *np = pdev->dev.of_node;
 	struct snd_soc_card *card = &snd_soc_tegra_rt5640;
 	struct tegra_rt5640 *machine;
 	int ret;

 	machine = devm_kzalloc(&pdev->dev,
 			sizeof(struct tegra_rt5640), GFP_KERNEL);
 	if (!machine) {
 		dev_err(&pdev->dev, "Can't allocate tegra_rt5640\n");
 		return -ENOMEM;
 	}

 	card->dev = &pdev->dev;
 	platform_set_drvdata(pdev, card);
 	snd_soc_card_set_drvdata(card, machine);

 	machine->gpio_hp_det = of_get_named_gpio(np, "nvidia,hp-det-gpios", 0);
 	if (machine->gpio_hp_det == -EPROBE_DEFER)
 		return -EPROBE_DEFER;

 	ret = snd_soc_of_parse_card_name(card, "nvidia,model");
 	if (ret)
 		goto err;

 	ret = snd_soc_of_parse_audio_routing(card, "nvidia,audio-routing");
 	if (ret)
 		goto err;

 	tegra_rt5640_dai.codec_of_node = of_parse_phandle(np,
 			"nvidia,audio-codec", 0);
 	if (!tegra_rt5640_dai.codec_of_node) {
 		dev_err(&pdev->dev,
 			"Property 'nvidia,audio-codec' missing or invalid\n");
 		ret = -EINVAL;
 		goto err;
 	}

 	tegra_rt5640_dai.cpu_of_node = of_parse_phandle(np,
 			"nvidia,i2s-controller", 0);
 	if (!tegra_rt5640_dai.cpu_of_node) {
 		dev_err(&pdev->dev,
 			"Property 'nvidia,i2s-controller' missing or invalid\n");
 		ret = -EINVAL;
 		goto err;
 	}

 	tegra_rt5640_dai.platform_of_node = tegra_rt5640_dai.cpu_of_node;

 	ret = tegra_asoc_utils_init(&machine->util_data, &pdev->dev);
 	if (ret)
 		goto err;

 	ret = snd_soc_register_card(card);
 	if (ret) {
 		dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n",
 			ret);
 		goto err_fini_utils;
 	}

 	return 0;

 err_fini_utils:
 	tegra_asoc_utils_fini(&machine->util_data);
 err:
 	return ret;
 }

 static int tegra_rt5640_remove(struct platform_device *pdev)
 {
 	struct snd_soc_card *card = platform_get_drvdata(pdev);
 	struct tegra_rt5640 *machine = snd_soc_card_get_drvdata(card);

 	snd_soc_unregister_card(card);

 	tegra_asoc_utils_fini(&machine->util_data);

 	return 0;
 }

 static const struct of_device_id tegra_rt5640_of_match[] = {
 	{ .compatible = "nvidia,tegra-audio-rt5640", },
 	{},
 };

 static struct platform_driver tegra_rt5640_driver = {
 	.driver = {
 		.name = DRV_NAME,
 		.owner = THIS_MODULE,
 		.pm = &snd_soc_pm_ops,
 		.of_match_table = tegra_rt5640_of_match,
 	},
 	.probe = tegra_rt5640_probe,
 	.remove = tegra_rt5640_remove,
 };
 module_platform_driver(tegra_rt5640_driver);

 MODULE_AUTHOR("Stephen Warren <swarren@nvidia.com>");
 MODULE_DESCRIPTION("Tegra+RT5640 machine ASoC driver");
 MODULE_LICENSE("GPL v2");
 MODULE_ALIAS("platform:" DRV_NAME);
 MODULE_DEVICE_TABLE(of, tegra_rt5640_of_match);
	/*
	* tegra_rt5640.c - Tegra machine ASoC driver for boards using WM8903 codec.
	*
	* Copyright (c) 2013, NVIDIA 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/>.
	*
	* Based on code copyright/by:
	*
	* Copyright (C) 2010-2012 - NVIDIA, Inc.
	* Copyright (C) 2011 The AC100 Kernel Team <ac100@lists.lauchpad.net>
	* (c) 2009, 2010 Nvidia Graphics Pvt. Ltd.
	* Copyright 2007 Wolfson Microelectronics PLC.
	*/

	#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 "../codecs/rt5640.h"

	#include "tegra_asoc_utils.h"

	#define DRV_NAME "tegra-snd-rt5640"

	struct tegra_rt5640 {
	struct tegra_asoc_utils_data util_data;
	int gpio_hp_det;
	};

	static int tegra_rt5640_asoc_hw_params(struct snd_pcm_substream *substream,
	struct snd_pcm_hw_params *params)
	{
	struct snd_soc_pcm_runtime *rtd = substream->private_data;
	struct snd_soc_dai *codec_dai = rtd->codec_dai;
	struct snd_soc_card *card = rtd->card;
	struct tegra_rt5640 *machine = snd_soc_card_get_drvdata(card);
	int srate, mclk;
	int err;

	srate = params_rate(params);
	mclk = 256 * srate;

	err = tegra_asoc_utils_set_rate(&machine->util_data, srate, mclk);
	if (err < 0) {
	dev_err(card->dev, "Can't configure clocks\n");
	return err;
	}

	err = snd_soc_dai_set_sysclk(codec_dai, RT5640_SCLK_S_MCLK, mclk,
	SND_SOC_CLOCK_IN);
	if (err < 0) {
	dev_err(card->dev, "codec_dai clock not set\n");
	return err;
	}

	return 0;
	}

	static struct snd_soc_ops tegra_rt5640_ops = {
	.hw_params = tegra_rt5640_asoc_hw_params,
	};

	static struct snd_soc_jack tegra_rt5640_hp_jack;

	static struct snd_soc_jack_pin tegra_rt5640_hp_jack_pins[] = {
	{
	.pin = "Headphones",
	.mask = SND_JACK_HEADPHONE,
	},
	};

	static struct snd_soc_jack_gpio tegra_rt5640_hp_jack_gpio = {
	.name = "Headphone detection",
	.report = SND_JACK_HEADPHONE,
	.debounce_time = 150,
	.invert = 1,
	};

	static const struct snd_soc_dapm_widget tegra_rt5640_dapm_widgets[] = {
	SND_SOC_DAPM_HP("Headphones", NULL),
	SND_SOC_DAPM_SPK("Speakers", NULL),
	SND_SOC_DAPM_MIC("Mic Jack", NULL),
	};

	static const struct snd_kcontrol_new tegra_rt5640_controls[] = {
	SOC_DAPM_PIN_SWITCH("Speakers"),
	};

	static int tegra_rt5640_asoc_init(struct snd_soc_pcm_runtime *rtd)
	{
	struct snd_soc_dai *codec_dai = rtd->codec_dai;
	struct snd_soc_codec *codec = codec_dai->codec;
	struct tegra_rt5640 *machine = snd_soc_card_get_drvdata(rtd->card);

	snd_soc_jack_new(codec, "Headphones", SND_JACK_HEADPHONE,
	&tegra_rt5640_hp_jack);
	snd_soc_jack_add_pins(&tegra_rt5640_hp_jack,
	ARRAY_SIZE(tegra_rt5640_hp_jack_pins),
	tegra_rt5640_hp_jack_pins);

	if (gpio_is_valid(machine->gpio_hp_det)) {
	tegra_rt5640_hp_jack_gpio.gpio = machine->gpio_hp_det;
	snd_soc_jack_add_gpios(&tegra_rt5640_hp_jack,
	1,
	&tegra_rt5640_hp_jack_gpio);
	}

	return 0;
	}

	static int tegra_rt5640_card_remove(struct snd_soc_card *card)
	{
	struct tegra_rt5640 *machine = snd_soc_card_get_drvdata(card);

	if (gpio_is_valid(machine->gpio_hp_det)) {
	snd_soc_jack_free_gpios(&tegra_rt5640_hp_jack, 1,
	&tegra_rt5640_hp_jack_gpio);
	}

	return 0;
	}

	static struct snd_soc_dai_link tegra_rt5640_dai = {
	.name = "RT5640",
	.stream_name = "RT5640 PCM",
	.codec_dai_name = "rt5640-aif1",
	.init = tegra_rt5640_asoc_init,
	.ops = &tegra_rt5640_ops,
	.dai_fmt = SND_SOC_DAIFMT_I2S \| SND_SOC_DAIFMT_NB_NF \|
	SND_SOC_DAIFMT_CBS_CFS,
	};

	static struct snd_soc_card snd_soc_tegra_rt5640 = {
	.name = "tegra-rt5640",
	.owner = THIS_MODULE,
	.remove = tegra_rt5640_card_remove,
	.dai_link = &tegra_rt5640_dai,
	.num_links = 1,
	.controls = tegra_rt5640_controls,
	.num_controls = ARRAY_SIZE(tegra_rt5640_controls),
	.dapm_widgets = tegra_rt5640_dapm_widgets,
	.num_dapm_widgets = ARRAY_SIZE(tegra_rt5640_dapm_widgets),
	.fully_routed = true,
	};

	static int tegra_rt5640_probe(struct platform_device *pdev)
	{
	struct device_node *np = pdev->dev.of_node;
	struct snd_soc_card *card = &snd_soc_tegra_rt5640;
	struct tegra_rt5640 *machine;
	int ret;

	machine = devm_kzalloc(&pdev->dev,
	sizeof(struct tegra_rt5640), GFP_KERNEL);
	if (!machine) {
	dev_err(&pdev->dev, "Can't allocate tegra_rt5640\n");
	return -ENOMEM;
	}

	card->dev = &pdev->dev;
	platform_set_drvdata(pdev, card);
	snd_soc_card_set_drvdata(card, machine);

	machine->gpio_hp_det = of_get_named_gpio(np, "nvidia,hp-det-gpios", 0);
	if (machine->gpio_hp_det == -EPROBE_DEFER)
	return -EPROBE_DEFER;

	ret = snd_soc_of_parse_card_name(card, "nvidia,model");
	if (ret)
	goto err;

	ret = snd_soc_of_parse_audio_routing(card, "nvidia,audio-routing");
	if (ret)
	goto err;

	tegra_rt5640_dai.codec_of_node = of_parse_phandle(np,
	"nvidia,audio-codec", 0);
	if (!tegra_rt5640_dai.codec_of_node) {
	dev_err(&pdev->dev,
	"Property 'nvidia,audio-codec' missing or invalid\n");
	ret = -EINVAL;
	goto err;
	}

	tegra_rt5640_dai.cpu_of_node = of_parse_phandle(np,
	"nvidia,i2s-controller", 0);
	if (!tegra_rt5640_dai.cpu_of_node) {
	dev_err(&pdev->dev,
	"Property 'nvidia,i2s-controller' missing or invalid\n");
	ret = -EINVAL;
	goto err;
	}

	tegra_rt5640_dai.platform_of_node = tegra_rt5640_dai.cpu_of_node;

	ret = tegra_asoc_utils_init(&machine->util_data, &pdev->dev);
	if (ret)
	goto err;

	ret = snd_soc_register_card(card);
	if (ret) {
	dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n",
	ret);
	goto err_fini_utils;
	}

	return 0;

	err_fini_utils:
	tegra_asoc_utils_fini(&machine->util_data);
	err:
	return ret;
	}

	static int tegra_rt5640_remove(struct platform_device *pdev)
	{
	struct snd_soc_card *card = platform_get_drvdata(pdev);
	struct tegra_rt5640 *machine = snd_soc_card_get_drvdata(card);

	snd_soc_unregister_card(card);

	tegra_asoc_utils_fini(&machine->util_data);

	return 0;
	}

	static const struct of_device_id tegra_rt5640_of_match[] = {
	{ .compatible = "nvidia,tegra-audio-rt5640", },
	{},
	};

	static struct platform_driver tegra_rt5640_driver = {
	.driver = {
	.name = DRV_NAME,
	.owner = THIS_MODULE,
	.pm = &snd_soc_pm_ops,
	.of_match_table = tegra_rt5640_of_match,
	},
	.probe = tegra_rt5640_probe,
	.remove = tegra_rt5640_remove,
	};
	module_platform_driver(tegra_rt5640_driver);

	MODULE_AUTHOR("Stephen Warren <swarren@nvidia.com>");
	MODULE_DESCRIPTION("Tegra+RT5640 machine ASoC driver");
	MODULE_LICENSE("GPL v2");
	MODULE_ALIAS("platform:" DRV_NAME);
	MODULE_DEVICE_TABLE(of, tegra_rt5640_of_match);