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

/*
 * harmony.c - Harmony machine ASoC driver
 *
 * Author: Stephen Warren <swarren@nvidia.com>
 * Copyright (C) 2010-2011 - NVIDIA, Inc.
 *
 * Based on code copyright/by:
 *
 * (c) 2009, 2010 Nvidia Graphics Pvt. Ltd.
 *
 * Copyright 2007 Wolfson Microelectronics PLC.
 * Author: Graeme Gregory
 *         graeme.gregory@wolfsonmicro.com or linux@wolfsonmicro.com
 *
 * 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.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA
 *
 */

#include <asm/mach-types.h>

#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/slab.h>
#include <linux/gpio.h>

#include <mach/harmony_audio.h>

#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/soc.h>

#include "tegra_das.h"
#include "tegra_i2s.h"
#include "tegra_pcm.h"
#include "tegra_asoc_utils.h"

#define DRV_NAME "tegra-snd-harmony"

struct tegra_harmony {
	struct tegra_asoc_utils_data util_data;
	struct harmony_audio_platform_data *pdata;
	int gpio_spkr_en_requested;
};

static int harmony_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_dai *cpu_dai = rtd->cpu_dai;
	struct snd_soc_codec *codec = rtd->codec;
	struct snd_soc_card *card = codec->card;
	struct tegra_harmony *harmony = snd_soc_card_get_drvdata(card);
	int srate, mclk, mclk_change;
	int err;

	srate = params_rate(params);
	switch (srate) {
	case 64000:
	case 88200:
	case 96000:
		mclk = 128 * srate;
		break;
	default:
		mclk = 256 * srate;
		break;
	}
	/* FIXME: Codec only requires >= 3MHz if OSR==0 */
	while (mclk < 6000000)
		mclk *= 2;

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

	err = snd_soc_dai_set_fmt(codec_dai,
					SND_SOC_DAIFMT_I2S |
					SND_SOC_DAIFMT_NB_NF |
					SND_SOC_DAIFMT_CBS_CFS);
	if (err < 0) {
		dev_err(card->dev, "codec_dai fmt not set\n");
		return err;
	}

	err = snd_soc_dai_set_fmt(cpu_dai,
					SND_SOC_DAIFMT_I2S |
					SND_SOC_DAIFMT_NB_NF |
					SND_SOC_DAIFMT_CBS_CFS);
	if (err < 0) {
		dev_err(card->dev, "cpu_dai fmt not set\n");
		return err;
	}

	if (mclk_change) {
		err = snd_soc_dai_set_sysclk(codec_dai, 0, 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 harmony_asoc_ops = {
	.hw_params = harmony_asoc_hw_params,
};

static int harmony_event_int_spk(struct snd_soc_dapm_widget *w,
					struct snd_kcontrol *k, int event)
{
	struct snd_soc_codec *codec = w->codec;
	struct snd_soc_card *card = codec->card;
	struct tegra_harmony *harmony = snd_soc_card_get_drvdata(card);
	struct harmony_audio_platform_data *pdata = harmony->pdata;

	gpio_set_value_cansleep(pdata->gpio_spkr_en,
				SND_SOC_DAPM_EVENT_ON(event));

	return 0;
}

static const struct snd_soc_dapm_widget harmony_dapm_widgets[] = {
	SND_SOC_DAPM_SPK("Int Spk", harmony_event_int_spk),
	SND_SOC_DAPM_HP("Headphone Jack", NULL),
	SND_SOC_DAPM_MIC("Mic Jack", NULL),
};

static const struct snd_soc_dapm_route harmony_audio_map[] = {
	{"Headphone Jack", NULL, "HPOUTR"},
	{"Headphone Jack", NULL, "HPOUTL"},
	{"Int Spk", NULL, "ROP"},
	{"Int Spk", NULL, "RON"},
	{"Int Spk", NULL, "LOP"},
	{"Int Spk", NULL, "LON"},
	{"Mic Bias", NULL, "Mic Jack"},
	{"IN1L", NULL, "Mic Bias"},
};

static int harmony_asoc_init(struct snd_soc_pcm_runtime *rtd)
{
	struct snd_soc_codec *codec = rtd->codec;
	struct snd_soc_dapm_context *dapm = &codec->dapm;
	struct snd_soc_card *card = codec->card;
	struct tegra_harmony *harmony = snd_soc_card_get_drvdata(card);
	struct harmony_audio_platform_data *pdata = harmony->pdata;
	int ret;

	ret = gpio_request(pdata->gpio_spkr_en, "spkr_en");
	if (ret) {
		dev_err(card->dev, "cannot get spkr_en gpio\n");
		return ret;
	}
	harmony->gpio_spkr_en_requested = 1;

	gpio_direction_output(pdata->gpio_spkr_en, 0);

	snd_soc_dapm_new_controls(dapm, harmony_dapm_widgets,
					ARRAY_SIZE(harmony_dapm_widgets));

	snd_soc_dapm_add_routes(dapm, harmony_audio_map,
				ARRAY_SIZE(harmony_audio_map));

	snd_soc_dapm_enable_pin(dapm, "Headphone Jack");
	snd_soc_dapm_enable_pin(dapm, "Int Spk");
	snd_soc_dapm_enable_pin(dapm, "Mic Jack");
	snd_soc_dapm_sync(dapm);

	return 0;
}

static struct snd_soc_dai_link harmony_wm8903_dai = {
	.name = "WM8903",
	.stream_name = "WM8903 PCM",
	.codec_name = "wm8903-codec.0-001a",
	.platform_name = "tegra-pcm-audio",
	.cpu_dai_name = "tegra-i2s.0",
	.codec_dai_name = "wm8903-hifi",
	.init = harmony_asoc_init,
	.ops = &harmony_asoc_ops,
};

static struct snd_soc_card snd_soc_harmony = {
	.name = "tegra-harmony",
	.dai_link = &harmony_wm8903_dai,
	.num_links = 1,
};

static __devinit int tegra_snd_harmony_probe(struct platform_device *pdev)
{
	struct snd_soc_card *card = &snd_soc_harmony;
	struct tegra_harmony *harmony;
	struct harmony_audio_platform_data *pdata;
	int ret;

	if (!machine_is_harmony()) {
		dev_err(&pdev->dev, "Not running on Tegra Harmony!\n");
		return -ENODEV;
	}

	pdata = pdev->dev.platform_data;
	if (!pdata) {
		dev_err(&pdev->dev, "no platform data supplied\n");
		return -EINVAL;
	}

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

	harmony->pdata = pdata;

	ret = tegra_asoc_utils_init(&harmony->util_data, &pdev->dev);
	if (ret)
		goto err_free_harmony;

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

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

	return 0;

err_clear_drvdata:
	snd_soc_card_set_drvdata(card, NULL);
	platform_set_drvdata(pdev, NULL);
	card->dev = NULL;
	tegra_asoc_utils_fini(&harmony->util_data);
err_free_harmony:
	kfree(harmony);
	return ret;
}

static int __devexit tegra_snd_harmony_remove(struct platform_device *pdev)
{
	struct snd_soc_card *card = platform_get_drvdata(pdev);
	struct tegra_harmony *harmony = snd_soc_card_get_drvdata(card);
	struct harmony_audio_platform_data *pdata = harmony->pdata;

	snd_soc_unregister_card(card);

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

	tegra_asoc_utils_fini(&harmony->util_data);

	if (harmony->gpio_spkr_en_requested)
		gpio_free(pdata->gpio_spkr_en);

	kfree(harmony);

	return 0;
}

static struct platform_driver tegra_snd_harmony_driver = {
	.driver = {
		.name = DRV_NAME,
		.owner = THIS_MODULE,
	},
	.probe = tegra_snd_harmony_probe,
	.remove = __devexit_p(tegra_snd_harmony_remove),
};

static int __init snd_tegra_harmony_init(void)
{
	return platform_driver_register(&tegra_snd_harmony_driver);
}
module_init(snd_tegra_harmony_init);

static void __exit snd_tegra_harmony_exit(void)
{
	platform_driver_unregister(&tegra_snd_harmony_driver);
}
module_exit(snd_tegra_harmony_exit);

MODULE_AUTHOR("Stephen Warren <swarren@nvidia.com>");
MODULE_DESCRIPTION("Harmony machine ASoC driver");
MODULE_LICENSE("GPL");
Commit	Line	Data
a8bf1ba1 SW	1	/*
	2	* harmony.c - Harmony machine ASoC driver
	3	*
	4	* Author: Stephen Warren <swarren@nvidia.com>
72de2b1a	5	* Copyright (C) 2010-2011 - NVIDIA, Inc.
a8bf1ba1 SW	6	*
	7	* Based on code copyright/by:
	8	*
	9	* (c) 2009, 2010 Nvidia Graphics Pvt. Ltd.
	10	*
	11	* Copyright 2007 Wolfson Microelectronics PLC.
	12	* Author: Graeme Gregory
	13	* graeme.gregory@wolfsonmicro.com or linux@wolfsonmicro.com
	14	*
	15	* This program is free software; you can redistribute it and/or
	16	* modify it under the terms of the GNU General Public License
	17	* version 2 as published by the Free Software Foundation.
	18	*
	19	* This program is distributed in the hope that it will be useful, but
	20	* WITHOUT ANY WARRANTY; without even the implied warranty of
	21	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	22	* General Public License for more details.
	23	*
	24	* You should have received a copy of the GNU General Public License
	25	* along with this program; if not, write to the Free Software
	26	* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
	27	* 02110-1301 USA
	28	*
	29	*/
	30
	31	#include <asm/mach-types.h>
72de2b1a	32
a8bf1ba1	33	#include <linux/module.h>
72de2b1a SW	34	#include <linux/platform_device.h>
72de2b1a SW	35	#include <linux/slab.h>
6e267645 SW	36	#include <linux/gpio.h>
	37
	38	#include <mach/harmony_audio.h>
72de2b1a	39
a8bf1ba1 SW	40	#include <sound/core.h>
	41	#include <sound/pcm.h>
	42	#include <sound/pcm_params.h>
	43	#include <sound/soc.h>
	44
	45	#include "tegra_das.h"
	46	#include "tegra_i2s.h"
	47	#include "tegra_pcm.h"
	48	#include "tegra_asoc_utils.h"
	49
72de2b1a	50	#define DRV_NAME "tegra-snd-harmony"
a8bf1ba1	51
72de2b1a	52	struct tegra_harmony {
d64e57ce	53	struct tegra_asoc_utils_data util_data;
6e267645 SW	54	struct harmony_audio_platform_data *pdata;
6e267645 SW	55	int gpio_spkr_en_requested;
72de2b1a	56	};
a8bf1ba1 SW	57
	58	static int harmony_asoc_hw_params(struct snd_pcm_substream *substream,
	59	struct snd_pcm_hw_params *params)
	60	{
	61	struct snd_soc_pcm_runtime *rtd = substream->private_data;
	62	struct snd_soc_dai *codec_dai = rtd->codec_dai;
	63	struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
c244d477 SW	64	struct snd_soc_codec *codec = rtd->codec;
c244d477 SW	65	struct snd_soc_card *card = codec->card;
d64e57ce	66	struct tegra_harmony *harmony = snd_soc_card_get_drvdata(card);
a8bf1ba1 SW	67	int srate, mclk, mclk_change;
	68	int err;
	69
	70	srate = params_rate(params);
	71	switch (srate) {
	72	case 64000:
	73	case 88200:
	74	case 96000:
	75	mclk = 128 * srate;
	76	break;
	77	default:
	78	mclk = 256 * srate;
	79	break;
	80	}
	81	/* FIXME: Codec only requires >= 3MHz if OSR==0 */
	82	while (mclk < 6000000)
	83	mclk *= 2;
	84
d64e57ce SW	85	err = tegra_asoc_utils_set_rate(&harmony->util_data, srate, mclk,
d64e57ce SW	86	&mclk_change);
a8bf1ba1	87	if (err < 0) {
c244d477	88	dev_err(card->dev, "Can't configure clocks\n");
a8bf1ba1 SW	89	return err;
	90	}
	91
	92	err = snd_soc_dai_set_fmt(codec_dai,
	93	SND_SOC_DAIFMT_I2S \|
	94	SND_SOC_DAIFMT_NB_NF \|
	95	SND_SOC_DAIFMT_CBS_CFS);
	96	if (err < 0) {
c244d477	97	dev_err(card->dev, "codec_dai fmt not set\n");
a8bf1ba1 SW	98	return err;
	99	}
	100
	101	err = snd_soc_dai_set_fmt(cpu_dai,
	102	SND_SOC_DAIFMT_I2S \|
	103	SND_SOC_DAIFMT_NB_NF \|
	104	SND_SOC_DAIFMT_CBS_CFS);
	105	if (err < 0) {
c244d477	106	dev_err(card->dev, "cpu_dai fmt not set\n");
a8bf1ba1 SW	107	return err;
	108	}
	109
	110	if (mclk_change) {
bc72fe0c SW	111	err = snd_soc_dai_set_sysclk(codec_dai, 0, mclk,
	112	SND_SOC_CLOCK_IN);
	113	if (err < 0) {
c244d477	114	dev_err(card->dev, "codec_dai clock not set\n");
bc72fe0c SW	115	return err;
bc72fe0c SW	116	}
a8bf1ba1 SW	117	}
	118
	119	return 0;
	120	}
	121
	122	static struct snd_soc_ops harmony_asoc_ops = {
	123	.hw_params = harmony_asoc_hw_params,
	124	};
	125
6e267645 SW	126	static int harmony_event_int_spk(struct snd_soc_dapm_widget *w,
	127	struct snd_kcontrol *k, int event)
	128	{
	129	struct snd_soc_codec *codec = w->codec;
	130	struct snd_soc_card *card = codec->card;
	131	struct tegra_harmony *harmony = snd_soc_card_get_drvdata(card);
	132	struct harmony_audio_platform_data *pdata = harmony->pdata;
	133
	134	gpio_set_value_cansleep(pdata->gpio_spkr_en,
f9eabc3d	135	SND_SOC_DAPM_EVENT_ON(event));
6e267645 SW	136
	137	return 0;
	138	}
	139
62ffac4d	140	static const struct snd_soc_dapm_widget harmony_dapm_widgets[] = {
6e267645	141	SND_SOC_DAPM_SPK("Int Spk", harmony_event_int_spk),
62ffac4d SW	142	SND_SOC_DAPM_HP("Headphone Jack", NULL),
	143	SND_SOC_DAPM_MIC("Mic Jack", NULL),
	144	};
	145
	146	static const struct snd_soc_dapm_route harmony_audio_map[] = {
	147	{"Headphone Jack", NULL, "HPOUTR"},
	148	{"Headphone Jack", NULL, "HPOUTL"},
6e267645 SW	149	{"Int Spk", NULL, "ROP"},
	150	{"Int Spk", NULL, "RON"},
	151	{"Int Spk", NULL, "LOP"},
	152	{"Int Spk", NULL, "LON"},
62ffac4d SW	153	{"Mic Bias", NULL, "Mic Jack"},
	154	{"IN1L", NULL, "Mic Bias"},
	155	};
	156
	157	static int harmony_asoc_init(struct snd_soc_pcm_runtime *rtd)
	158	{
	159	struct snd_soc_codec *codec = rtd->codec;
	160	struct snd_soc_dapm_context *dapm = &codec->dapm;
6e267645 SW	161	struct snd_soc_card *card = codec->card;
	162	struct tegra_harmony *harmony = snd_soc_card_get_drvdata(card);
	163	struct harmony_audio_platform_data *pdata = harmony->pdata;
	164	int ret;
	165
	166	ret = gpio_request(pdata->gpio_spkr_en, "spkr_en");
	167	if (ret) {
	168	dev_err(card->dev, "cannot get spkr_en gpio\n");
	169	return ret;
	170	}
	171	harmony->gpio_spkr_en_requested = 1;
	172
	173	gpio_direction_output(pdata->gpio_spkr_en, 0);
62ffac4d SW	174
	175	snd_soc_dapm_new_controls(dapm, harmony_dapm_widgets,
	176	ARRAY_SIZE(harmony_dapm_widgets));
	177
	178	snd_soc_dapm_add_routes(dapm, harmony_audio_map,
	179	ARRAY_SIZE(harmony_audio_map));
	180
	181	snd_soc_dapm_enable_pin(dapm, "Headphone Jack");
6e267645	182	snd_soc_dapm_enable_pin(dapm, "Int Spk");
62ffac4d SW	183	snd_soc_dapm_enable_pin(dapm, "Mic Jack");
	184	snd_soc_dapm_sync(dapm);
	185
	186	return 0;
	187	}
	188
a8bf1ba1 SW	189	static struct snd_soc_dai_link harmony_wm8903_dai = {
	190	.name = "WM8903",
	191	.stream_name = "WM8903 PCM",
	192	.codec_name = "wm8903-codec.0-001a",
	193	.platform_name = "tegra-pcm-audio",
	194	.cpu_dai_name = "tegra-i2s.0",
	195	.codec_dai_name = "wm8903-hifi",
62ffac4d	196	.init = harmony_asoc_init,
a8bf1ba1 SW	197	.ops = &harmony_asoc_ops,
	198	};
	199
	200	static struct snd_soc_card snd_soc_harmony = {
	201	.name = "tegra-harmony",
	202	.dai_link = &harmony_wm8903_dai,
	203	.num_links = 1,
	204	};
	205
72de2b1a	206	static __devinit int tegra_snd_harmony_probe(struct platform_device *pdev)
a8bf1ba1	207	{
72de2b1a SW	208	struct snd_soc_card *card = &snd_soc_harmony;
72de2b1a SW	209	struct tegra_harmony *harmony;
6e267645	210	struct harmony_audio_platform_data *pdata;
a8bf1ba1 SW	211	int ret;
	212
	213	if (!machine_is_harmony()) {
72de2b1a	214	dev_err(&pdev->dev, "Not running on Tegra Harmony!\n");
a8bf1ba1 SW	215	return -ENODEV;
	216	}
	217
6e267645 SW	218	pdata = pdev->dev.platform_data;
	219	if (!pdata) {
	220	dev_err(&pdev->dev, "no platform data supplied\n");
	221	return -EINVAL;
	222	}
	223
72de2b1a SW	224	harmony = kzalloc(sizeof(struct tegra_harmony), GFP_KERNEL);
	225	if (!harmony) {
	226	dev_err(&pdev->dev, "Can't allocate tegra_harmony\n");
	227	return -ENOMEM;
a8bf1ba1 SW	228	}
a8bf1ba1 SW	229
6e267645 SW	230	harmony->pdata = pdata;
6e267645 SW	231
d64e57ce	232	ret = tegra_asoc_utils_init(&harmony->util_data, &pdev->dev);
72de2b1a SW	233	if (ret)
72de2b1a SW	234	goto err_free_harmony;
a8bf1ba1	235
72de2b1a SW	236	card->dev = &pdev->dev;
	237	platform_set_drvdata(pdev, card);
	238	snd_soc_card_set_drvdata(card, harmony);
a8bf1ba1	239
72de2b1a	240	ret = snd_soc_register_card(card);
a8bf1ba1	241	if (ret) {
72de2b1a	242	dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n",
a8bf1ba1	243	ret);
72de2b1a	244	goto err_clear_drvdata;
a8bf1ba1 SW	245	}
	246
	247	return 0;
	248
72de2b1a SW	249	err_clear_drvdata:
	250	snd_soc_card_set_drvdata(card, NULL);
	251	platform_set_drvdata(pdev, NULL);
	252	card->dev = NULL;
d64e57ce	253	tegra_asoc_utils_fini(&harmony->util_data);
72de2b1a SW	254	err_free_harmony:
72de2b1a SW	255	kfree(harmony);
a8bf1ba1 SW	256	return ret;
a8bf1ba1 SW	257	}
a8bf1ba1	258
72de2b1a	259	static int __devexit tegra_snd_harmony_remove(struct platform_device *pdev)
a8bf1ba1	260	{
72de2b1a SW	261	struct snd_soc_card *card = platform_get_drvdata(pdev);
72de2b1a SW	262	struct tegra_harmony *harmony = snd_soc_card_get_drvdata(card);
6e267645	263	struct harmony_audio_platform_data *pdata = harmony->pdata;
72de2b1a SW	264
	265	snd_soc_unregister_card(card);
	266
	267	snd_soc_card_set_drvdata(card, NULL);
	268	platform_set_drvdata(pdev, NULL);
	269	card->dev = NULL;
a8bf1ba1	270
d64e57ce	271	tegra_asoc_utils_fini(&harmony->util_data);
72de2b1a	272
6e267645 SW	273	if (harmony->gpio_spkr_en_requested)
	274	gpio_free(pdata->gpio_spkr_en);
	275
72de2b1a SW	276	kfree(harmony);
	277
	278	return 0;
	279	}
	280
	281	static struct platform_driver tegra_snd_harmony_driver = {
	282	.driver = {
	283	.name = DRV_NAME,
	284	.owner = THIS_MODULE,
	285	},
	286	.probe = tegra_snd_harmony_probe,
	287	.remove = __devexit_p(tegra_snd_harmony_remove),
	288	};
	289
	290	static int __init snd_tegra_harmony_init(void)
	291	{
	292	return platform_driver_register(&tegra_snd_harmony_driver);
	293	}
	294	module_init(snd_tegra_harmony_init);
	295
	296	static void __exit snd_tegra_harmony_exit(void)
	297	{
	298	platform_driver_unregister(&tegra_snd_harmony_driver);
a8bf1ba1	299	}
72de2b1a	300	module_exit(snd_tegra_harmony_exit);
a8bf1ba1 SW	301
	302	MODULE_AUTHOR("Stephen Warren <swarren@nvidia.com>");
	303	MODULE_DESCRIPTION("Harmony machine ASoC driver");
	304	MODULE_LICENSE("GPL");