[deliverable/linux.git] / sound / soc / tegra / tegra_rt5640.c

/*
* 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;
	enum of_gpio_flags gpio_hp_det_flags;
};

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;
		tegra_rt5640_hp_jack_gpio.invert =
			!!(machine->gpio_hp_det_flags & OF_GPIO_ACTIVE_LOW);
		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_flags(
		np, "nvidia,hp-det-gpios", 0, &machine->gpio_hp_det_flags);
	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,
		.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);
Commit	Line	Data
040a62cf SW	1	/*
	2	* tegra_rt5640.c - Tegra machine ASoC driver for boards using WM8903 codec.
	3	*
	4	* Copyright (c) 2013, NVIDIA CORPORATION. All rights reserved.
	5	*
	6	* This program is free software; you can redistribute it and/or modify it
	7	* under the terms and conditions of the GNU General Public License,
	8	* version 2, as published by the Free Software Foundation.
	9	*
	10	* This program is distributed in the hope it will be useful, but WITHOUT
	11	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
	12	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
	13	* more details.
	14	*
	15	* You should have received a copy of the GNU General Public License
	16	* along with this program. If not, see <http://www.gnu.org/licenses/>.
	17	*
	18	* Based on code copyright/by:
	19	*
	20	* Copyright (C) 2010-2012 - NVIDIA, Inc.
	21	* Copyright (C) 2011 The AC100 Kernel Team <ac100@lists.lauchpad.net>
	22	* (c) 2009, 2010 Nvidia Graphics Pvt. Ltd.
	23	* Copyright 2007 Wolfson Microelectronics PLC.
	24	*/
	25
	26	#include <linux/module.h>
	27	#include <linux/platform_device.h>
	28	#include <linux/slab.h>
	29	#include <linux/gpio.h>
	30	#include <linux/of_gpio.h>
	31
	32	#include <sound/core.h>
	33	#include <sound/jack.h>
	34	#include <sound/pcm.h>
	35	#include <sound/pcm_params.h>
	36	#include <sound/soc.h>
	37
	38	#include "../codecs/rt5640.h"
	39
	40	#include "tegra_asoc_utils.h"
	41
	42	#define DRV_NAME "tegra-snd-rt5640"
	43
	44	struct tegra_rt5640 {
	45	struct tegra_asoc_utils_data util_data;
	46	int gpio_hp_det;
469cda29	47	enum of_gpio_flags gpio_hp_det_flags;
040a62cf SW	48	};
	49
	50	static int tegra_rt5640_asoc_hw_params(struct snd_pcm_substream *substream,
	51	struct snd_pcm_hw_params *params)
	52	{
	53	struct snd_soc_pcm_runtime *rtd = substream->private_data;
	54	struct snd_soc_dai *codec_dai = rtd->codec_dai;
093c4e5c	55	struct snd_soc_card *card = rtd->card;
040a62cf SW	56	struct tegra_rt5640 *machine = snd_soc_card_get_drvdata(card);
	57	int srate, mclk;
	58	int err;
	59
	60	srate = params_rate(params);
	61	mclk = 256 * srate;
	62
	63	err = tegra_asoc_utils_set_rate(&machine->util_data, srate, mclk);
	64	if (err < 0) {
	65	dev_err(card->dev, "Can't configure clocks\n");
	66	return err;
	67	}
	68
	69	err = snd_soc_dai_set_sysclk(codec_dai, RT5640_SCLK_S_MCLK, mclk,
	70	SND_SOC_CLOCK_IN);
	71	if (err < 0) {
	72	dev_err(card->dev, "codec_dai clock not set\n");
	73	return err;
	74	}
	75
	76	return 0;
	77	}
	78
	79	static struct snd_soc_ops tegra_rt5640_ops = {
	80	.hw_params = tegra_rt5640_asoc_hw_params,
	81	};
	82
	83	static struct snd_soc_jack tegra_rt5640_hp_jack;
	84
	85	static struct snd_soc_jack_pin tegra_rt5640_hp_jack_pins[] = {
	86	{
	87	.pin = "Headphones",
	88	.mask = SND_JACK_HEADPHONE,
	89	},
	90	};
	91
	92	static struct snd_soc_jack_gpio tegra_rt5640_hp_jack_gpio = {
	93	.name = "Headphone detection",
	94	.report = SND_JACK_HEADPHONE,
	95	.debounce_time = 150,
	96	.invert = 1,
	97	};
	98
	99	static const struct snd_soc_dapm_widget tegra_rt5640_dapm_widgets[] = {
	100	SND_SOC_DAPM_HP("Headphones", NULL),
	101	SND_SOC_DAPM_SPK("Speakers", NULL),
7ac0da8c	102	SND_SOC_DAPM_MIC("Mic Jack", NULL),
040a62cf SW	103	};
	104
	105	static const struct snd_kcontrol_new tegra_rt5640_controls[] = {
	106	SOC_DAPM_PIN_SWITCH("Speakers"),
	107	};
	108
	109	static int tegra_rt5640_asoc_init(struct snd_soc_pcm_runtime *rtd)
	110	{
	111	struct snd_soc_dai *codec_dai = rtd->codec_dai;
	112	struct snd_soc_codec *codec = codec_dai->codec;
093c4e5c	113	struct tegra_rt5640 *machine = snd_soc_card_get_drvdata(rtd->card);
040a62cf SW	114
	115	snd_soc_jack_new(codec, "Headphones", SND_JACK_HEADPHONE,
	116	&tegra_rt5640_hp_jack);
	117	snd_soc_jack_add_pins(&tegra_rt5640_hp_jack,
	118	ARRAY_SIZE(tegra_rt5640_hp_jack_pins),
	119	tegra_rt5640_hp_jack_pins);
	120
	121	if (gpio_is_valid(machine->gpio_hp_det)) {
	122	tegra_rt5640_hp_jack_gpio.gpio = machine->gpio_hp_det;
469cda29 AB	123	tegra_rt5640_hp_jack_gpio.invert =
469cda29 AB	124	!!(machine->gpio_hp_det_flags & OF_GPIO_ACTIVE_LOW);
040a62cf SW	125	snd_soc_jack_add_gpios(&tegra_rt5640_hp_jack,
	126	1,
	127	&tegra_rt5640_hp_jack_gpio);
	128	}
	129
	130	return 0;
	131	}
	132
fb6b8e71 SW	133	static int tegra_rt5640_card_remove(struct snd_soc_card *card)
	134	{
	135	struct tegra_rt5640 *machine = snd_soc_card_get_drvdata(card);
	136
	137	if (gpio_is_valid(machine->gpio_hp_det)) {
	138	snd_soc_jack_free_gpios(&tegra_rt5640_hp_jack, 1,
	139	&tegra_rt5640_hp_jack_gpio);
	140	}
	141
	142	return 0;
	143	}
	144
040a62cf SW	145	static struct snd_soc_dai_link tegra_rt5640_dai = {
	146	.name = "RT5640",
	147	.stream_name = "RT5640 PCM",
	148	.codec_dai_name = "rt5640-aif1",
	149	.init = tegra_rt5640_asoc_init,
	150	.ops = &tegra_rt5640_ops,
	151	.dai_fmt = SND_SOC_DAIFMT_I2S \| SND_SOC_DAIFMT_NB_NF \|
	152	SND_SOC_DAIFMT_CBS_CFS,
	153	};
	154
	155	static struct snd_soc_card snd_soc_tegra_rt5640 = {
	156	.name = "tegra-rt5640",
	157	.owner = THIS_MODULE,
fb6b8e71	158	.remove = tegra_rt5640_card_remove,
040a62cf SW	159	.dai_link = &tegra_rt5640_dai,
	160	.num_links = 1,
	161	.controls = tegra_rt5640_controls,
	162	.num_controls = ARRAY_SIZE(tegra_rt5640_controls),
	163	.dapm_widgets = tegra_rt5640_dapm_widgets,
	164	.num_dapm_widgets = ARRAY_SIZE(tegra_rt5640_dapm_widgets),
	165	.fully_routed = true,
	166	};
	167
	168	static int tegra_rt5640_probe(struct platform_device *pdev)
	169	{
	170	struct device_node *np = pdev->dev.of_node;
	171	struct snd_soc_card *card = &snd_soc_tegra_rt5640;
	172	struct tegra_rt5640 *machine;
	173	int ret;
	174
	175	machine = devm_kzalloc(&pdev->dev,
	176	sizeof(struct tegra_rt5640), GFP_KERNEL);
	177	if (!machine) {
	178	dev_err(&pdev->dev, "Can't allocate tegra_rt5640\n");
	179	return -ENOMEM;
	180	}
	181
	182	card->dev = &pdev->dev;
	183	platform_set_drvdata(pdev, card);
	184	snd_soc_card_set_drvdata(card, machine);
	185
469cda29 AB	186	machine->gpio_hp_det = of_get_named_gpio_flags(
469cda29 AB	187	np, "nvidia,hp-det-gpios", 0, &machine->gpio_hp_det_flags);
040a62cf SW	188	if (machine->gpio_hp_det == -EPROBE_DEFER)
	189	return -EPROBE_DEFER;
	190
	191	ret = snd_soc_of_parse_card_name(card, "nvidia,model");
	192	if (ret)
	193	goto err;
	194
	195	ret = snd_soc_of_parse_audio_routing(card, "nvidia,audio-routing");
	196	if (ret)
	197	goto err;
	198
	199	tegra_rt5640_dai.codec_of_node = of_parse_phandle(np,
	200	"nvidia,audio-codec", 0);
	201	if (!tegra_rt5640_dai.codec_of_node) {
	202	dev_err(&pdev->dev,
	203	"Property 'nvidia,audio-codec' missing or invalid\n");
	204	ret = -EINVAL;
	205	goto err;
	206	}
	207
	208	tegra_rt5640_dai.cpu_of_node = of_parse_phandle(np,
	209	"nvidia,i2s-controller", 0);
	210	if (!tegra_rt5640_dai.cpu_of_node) {
	211	dev_err(&pdev->dev,
	212	"Property 'nvidia,i2s-controller' missing or invalid\n");
	213	ret = -EINVAL;
	214	goto err;
	215	}
	216
	217	tegra_rt5640_dai.platform_of_node = tegra_rt5640_dai.cpu_of_node;
	218
	219	ret = tegra_asoc_utils_init(&machine->util_data, &pdev->dev);
	220	if (ret)
	221	goto err;
	222
	223	ret = snd_soc_register_card(card);
	224	if (ret) {
	225	dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n",
	226	ret);
	227	goto err_fini_utils;
	228	}
	229
	230	return 0;
	231
	232	err_fini_utils:
	233	tegra_asoc_utils_fini(&machine->util_data);
	234	err:
	235	return ret;
	236	}
	237
	238	static int tegra_rt5640_remove(struct platform_device *pdev)
	239	{
	240	struct snd_soc_card *card = platform_get_drvdata(pdev);
	241	struct tegra_rt5640 *machine = snd_soc_card_get_drvdata(card);
	242
040a62cf SW	243	snd_soc_unregister_card(card);
	244
	245	tegra_asoc_utils_fini(&machine->util_data);
	246
	247	return 0;
	248	}
	249
	250	static const struct of_device_id tegra_rt5640_of_match[] = {
	251	{ .compatible = "nvidia,tegra-audio-rt5640", },
	252	{},
	253	};
	254
	255	static struct platform_driver tegra_rt5640_driver = {
	256	.driver = {
	257	.name = DRV_NAME,
040a62cf SW	258	.pm = &snd_soc_pm_ops,
	259	.of_match_table = tegra_rt5640_of_match,
	260	},
	261	.probe = tegra_rt5640_probe,
	262	.remove = tegra_rt5640_remove,
	263	};
	264	module_platform_driver(tegra_rt5640_driver);
	265
	266	MODULE_AUTHOR("Stephen Warren <swarren@nvidia.com>");
	267	MODULE_DESCRIPTION("Tegra+RT5640 machine ASoC driver");
	268	MODULE_LICENSE("GPL v2");
	269	MODULE_ALIAS("platform:" DRV_NAME);
	270	MODULE_DEVICE_TABLE(of, tegra_rt5640_of_match);