[deliverable/linux.git] / sound / soc / tegra / tegra_wm9712.c

/*
 * tegra20_wm9712.c - Tegra machine ASoC driver for boards using WM9712 codec.
 *
 * Copyright 2012 Lucas Stach <dev@lynxeye.de>
 *
 * Partly based on code copyright/by:
 * Copyright 2011,2012 Toradex Inc.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * version 2 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.
 *
 */

#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 "tegra_asoc_utils.h"

#define DRV_NAME "tegra-snd-wm9712"

struct tegra_wm9712 {
	struct platform_device *codec;
	struct tegra_asoc_utils_data util_data;
};

static const struct snd_soc_dapm_widget tegra_wm9712_dapm_widgets[] = {
	SND_SOC_DAPM_HP("Headphone", NULL),
	SND_SOC_DAPM_LINE("LineIn", NULL),
	SND_SOC_DAPM_MIC("Mic", NULL),
};

static int tegra_wm9712_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 snd_soc_dapm_context *dapm = &codec->dapm;

	snd_soc_dapm_force_enable_pin(dapm, "Mic Bias");

	return snd_soc_dapm_sync(dapm);
}

static struct snd_soc_dai_link tegra_wm9712_dai = {
	.name = "AC97 HiFi",
	.stream_name = "AC97 HiFi",
	.codec_dai_name = "wm9712-hifi",
	.codec_name = "wm9712-codec",
	.init = tegra_wm9712_init,
};

static struct snd_soc_card snd_soc_tegra_wm9712 = {
	.name = "tegra-wm9712",
	.owner = THIS_MODULE,
	.dai_link = &tegra_wm9712_dai,
	.num_links = 1,

	.dapm_widgets = tegra_wm9712_dapm_widgets,
	.num_dapm_widgets = ARRAY_SIZE(tegra_wm9712_dapm_widgets),
	.fully_routed = true,
};

static int tegra_wm9712_driver_probe(struct platform_device *pdev)
{
	struct device_node *np = pdev->dev.of_node;
	struct snd_soc_card *card = &snd_soc_tegra_wm9712;
	struct tegra_wm9712 *machine;
	int ret;

	machine = devm_kzalloc(&pdev->dev, sizeof(struct tegra_wm9712),
			       GFP_KERNEL);
	if (!machine) {
		dev_err(&pdev->dev, "Can't allocate tegra_wm9712 struct\n");
		return -ENOMEM;
	}

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

	machine->codec = platform_device_alloc("wm9712-codec", -1);
	if (!machine->codec) {
		dev_err(&pdev->dev, "Can't allocate wm9712 platform device\n");
		return -ENOMEM;
	}

	ret = platform_device_add(machine->codec);
	if (ret)
		goto codec_put;

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

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

	tegra_wm9712_dai.cpu_of_node = of_parse_phandle(np,
				       "nvidia,ac97-controller", 0);
	if (!tegra_wm9712_dai.cpu_of_node) {
		dev_err(&pdev->dev,
			"Property 'nvidia,ac97-controller' missing or invalid\n");
		ret = -EINVAL;
		goto codec_unregister;
	}

	tegra_wm9712_dai.platform_of_node = tegra_wm9712_dai.cpu_of_node;

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

	ret = tegra_asoc_utils_set_ac97_rate(&machine->util_data);
	if (ret)
		goto asoc_utils_fini;

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

	return 0;

asoc_utils_fini:
	tegra_asoc_utils_fini(&machine->util_data);
codec_unregister:
	platform_device_del(machine->codec);
codec_put:
	platform_device_put(machine->codec);
	return ret;
}

static int tegra_wm9712_driver_remove(struct platform_device *pdev)
{
	struct snd_soc_card *card = platform_get_drvdata(pdev);
	struct tegra_wm9712 *machine = snd_soc_card_get_drvdata(card);

	snd_soc_unregister_card(card);

	tegra_asoc_utils_fini(&machine->util_data);

	platform_device_unregister(machine->codec);

	return 0;
}

static const struct of_device_id tegra_wm9712_of_match[] = {
	{ .compatible = "nvidia,tegra-audio-wm9712", },
	{},
};

static struct platform_driver tegra_wm9712_driver = {
	.driver = {
		.name = DRV_NAME,
		.owner = THIS_MODULE,
		.pm = &snd_soc_pm_ops,
		.of_match_table = tegra_wm9712_of_match,
	},
	.probe = tegra_wm9712_driver_probe,
	.remove = tegra_wm9712_driver_remove,
};
module_platform_driver(tegra_wm9712_driver);

MODULE_AUTHOR("Lucas Stach");
MODULE_DESCRIPTION("Tegra+WM9712 machine ASoC driver");
MODULE_LICENSE("GPL v2");
MODULE_ALIAS("platform:" DRV_NAME);
MODULE_DEVICE_TABLE(of, tegra_wm9712_of_match);
Commit	Line	Data
6995b8cb LS	1	/*
	2	* tegra20_wm9712.c - Tegra machine ASoC driver for boards using WM9712 codec.
	3	*
	4	* Copyright 2012 Lucas Stach <dev@lynxeye.de>
	5	*
	6	* Partly based on code copyright/by:
	7	* Copyright 2011,2012 Toradex Inc.
	8	*
	9	* This program is free software; you can redistribute it and/or
	10	* modify it under the terms of the GNU General Public License
	11	* version 2 as published by the Free Software Foundation.
	12	*
	13	* This program is distributed in the hope that it will be useful, but
	14	* WITHOUT ANY WARRANTY; without even the implied warranty of
	15	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	16	* General Public License for more details.
	17	*
	18	*/
	19
	20	#include <linux/module.h>
	21	#include <linux/platform_device.h>
	22	#include <linux/slab.h>
	23	#include <linux/gpio.h>
	24	#include <linux/of_gpio.h>
	25
	26	#include <sound/core.h>
	27	#include <sound/jack.h>
	28	#include <sound/pcm.h>
	29	#include <sound/pcm_params.h>
	30	#include <sound/soc.h>
	31
1ca2e847 LS	32	#include "tegra_asoc_utils.h"
1ca2e847 LS	33
6995b8cb LS	34	#define DRV_NAME "tegra-snd-wm9712"
	35
	36	struct tegra_wm9712 {
	37	struct platform_device *codec;
1ca2e847	38	struct tegra_asoc_utils_data util_data;
6995b8cb LS	39	};
	40
	41	static const struct snd_soc_dapm_widget tegra_wm9712_dapm_widgets[] = {
	42	SND_SOC_DAPM_HP("Headphone", NULL),
	43	SND_SOC_DAPM_LINE("LineIn", NULL),
	44	SND_SOC_DAPM_MIC("Mic", NULL),
	45	};
	46
	47	static int tegra_wm9712_init(struct snd_soc_pcm_runtime *rtd)
	48	{
	49	struct snd_soc_dai *codec_dai = rtd->codec_dai;
	50	struct snd_soc_codec *codec = codec_dai->codec;
	51	struct snd_soc_dapm_context *dapm = &codec->dapm;
	52
	53	snd_soc_dapm_force_enable_pin(dapm, "Mic Bias");
	54
	55	return snd_soc_dapm_sync(dapm);
	56	}
	57
	58	static struct snd_soc_dai_link tegra_wm9712_dai = {
	59	.name = "AC97 HiFi",
	60	.stream_name = "AC97 HiFi",
6995b8cb LS	61	.codec_dai_name = "wm9712-hifi",
	62	.codec_name = "wm9712-codec",
	63	.init = tegra_wm9712_init,
	64	};
	65
	66	static struct snd_soc_card snd_soc_tegra_wm9712 = {
	67	.name = "tegra-wm9712",
	68	.owner = THIS_MODULE,
	69	.dai_link = &tegra_wm9712_dai,
	70	.num_links = 1,
	71
	72	.dapm_widgets = tegra_wm9712_dapm_widgets,
	73	.num_dapm_widgets = ARRAY_SIZE(tegra_wm9712_dapm_widgets),
	74	.fully_routed = true,
	75	};
	76
	77	static int tegra_wm9712_driver_probe(struct platform_device *pdev)
	78	{
	79	struct device_node *np = pdev->dev.of_node;
	80	struct snd_soc_card *card = &snd_soc_tegra_wm9712;
	81	struct tegra_wm9712 *machine;
	82	int ret;
	83
6995b8cb LS	84	machine = devm_kzalloc(&pdev->dev, sizeof(struct tegra_wm9712),
	85	GFP_KERNEL);
	86	if (!machine) {
	87	dev_err(&pdev->dev, "Can't allocate tegra_wm9712 struct\n");
	88	return -ENOMEM;
	89	}
	90
	91	card->dev = &pdev->dev;
	92	platform_set_drvdata(pdev, card);
	93	snd_soc_card_set_drvdata(card, machine);
	94
	95	machine->codec = platform_device_alloc("wm9712-codec", -1);
	96	if (!machine->codec) {
	97	dev_err(&pdev->dev, "Can't allocate wm9712 platform device\n");
	98	return -ENOMEM;
	99	}
	100
	101	ret = platform_device_add(machine->codec);
	102	if (ret)
	103	goto codec_put;
	104
	105	ret = snd_soc_of_parse_card_name(card, "nvidia,model");
	106	if (ret)
	107	goto codec_unregister;
	108
	109	ret = snd_soc_of_parse_audio_routing(card, "nvidia,audio-routing");
	110	if (ret)
	111	goto codec_unregister;
	112
	113	tegra_wm9712_dai.cpu_of_node = of_parse_phandle(np,
	114	"nvidia,ac97-controller", 0);
	115	if (!tegra_wm9712_dai.cpu_of_node) {
	116	dev_err(&pdev->dev,
	117	"Property 'nvidia,ac97-controller' missing or invalid\n");
	118	ret = -EINVAL;
	119	goto codec_unregister;
	120	}
	121
	122	tegra_wm9712_dai.platform_of_node = tegra_wm9712_dai.cpu_of_node;
	123
1ca2e847 LS	124	ret = tegra_asoc_utils_init(&machine->util_data, &pdev->dev);
	125	if (ret)
	126	goto codec_unregister;
	127
	128	ret = tegra_asoc_utils_set_ac97_rate(&machine->util_data);
	129	if (ret)
	130	goto asoc_utils_fini;
	131
6995b8cb LS	132	ret = snd_soc_register_card(card);
	133	if (ret) {
	134	dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n",
	135	ret);
1ca2e847	136	goto asoc_utils_fini;
6995b8cb LS	137	}
	138
	139	return 0;
	140
1ca2e847 LS	141	asoc_utils_fini:
1ca2e847 LS	142	tegra_asoc_utils_fini(&machine->util_data);
6995b8cb LS	143	codec_unregister:
	144	platform_device_del(machine->codec);
	145	codec_put:
	146	platform_device_put(machine->codec);
	147	return ret;
	148	}
	149
	150	static int tegra_wm9712_driver_remove(struct platform_device *pdev)
	151	{
	152	struct snd_soc_card *card = platform_get_drvdata(pdev);
	153	struct tegra_wm9712 *machine = snd_soc_card_get_drvdata(card);
	154
	155	snd_soc_unregister_card(card);
	156
1ca2e847 LS	157	tegra_asoc_utils_fini(&machine->util_data);
1ca2e847 LS	158
6995b8cb LS	159	platform_device_unregister(machine->codec);
	160
	161	return 0;
	162	}
	163
b10fedf8	164	static const struct of_device_id tegra_wm9712_of_match[] = {
6995b8cb LS	165	{ .compatible = "nvidia,tegra-audio-wm9712", },
	166	{},
	167	};
	168
	169	static struct platform_driver tegra_wm9712_driver = {
	170	.driver = {
	171	.name = DRV_NAME,
	172	.owner = THIS_MODULE,
	173	.pm = &snd_soc_pm_ops,
	174	.of_match_table = tegra_wm9712_of_match,
	175	},
	176	.probe = tegra_wm9712_driver_probe,
	177	.remove = tegra_wm9712_driver_remove,
	178	};
	179	module_platform_driver(tegra_wm9712_driver);
	180
	181	MODULE_AUTHOR("Lucas Stach");
	182	MODULE_DESCRIPTION("Tegra+WM9712 machine ASoC driver");
	183	MODULE_LICENSE("GPL v2");
	184	MODULE_ALIAS("platform:" DRV_NAME);
	185	MODULE_DEVICE_TABLE(of, tegra_wm9712_of_match);