[deliverable/linux.git] / sound / soc / jz4740 / qi_lb60.c

/*
 * Copyright (C) 2009, Lars-Peter Clausen <lars@metafoo.de>
 *
 * 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.
 *
 *  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.,
 *  675 Mass Ave, Cambridge, MA 02139, USA.
 *
 */

#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/timer.h>
#include <linux/interrupt.h>
#include <linux/platform_device.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/soc.h>
#include <linux/gpio.h>

#define QI_LB60_SND_GPIO JZ_GPIO_PORTB(29)
#define QI_LB60_AMP_GPIO JZ_GPIO_PORTD(4)

static int qi_lb60_spk_event(struct snd_soc_dapm_widget *widget,
			     struct snd_kcontrol *ctrl, int event)
{
	int on = !SND_SOC_DAPM_EVENT_OFF(event);

	gpio_set_value(QI_LB60_SND_GPIO, on);
	gpio_set_value(QI_LB60_AMP_GPIO, on);

	return 0;
}

static const struct snd_soc_dapm_widget qi_lb60_widgets[] = {
	SND_SOC_DAPM_SPK("Speaker", qi_lb60_spk_event),
	SND_SOC_DAPM_MIC("Mic", NULL),
};

static const struct snd_soc_dapm_route qi_lb60_routes[] = {
	{"Mic", NULL, "MIC"},
	{"Speaker", NULL, "LOUT"},
	{"Speaker", NULL, "ROUT"},
};

#define QI_LB60_DAIFMT (SND_SOC_DAIFMT_I2S | \
			SND_SOC_DAIFMT_NB_NF | \
			SND_SOC_DAIFMT_CBM_CFM)

static int qi_lb60_codec_init(struct snd_soc_pcm_runtime *rtd)
{
	struct snd_soc_codec *codec = rtd->codec;
	struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
	struct snd_soc_dapm_context *dapm = &codec->dapm;
	int ret;

	snd_soc_dapm_nc_pin(dapm, "LIN");
	snd_soc_dapm_nc_pin(dapm, "RIN");

	ret = snd_soc_dai_set_fmt(cpu_dai, QI_LB60_DAIFMT);
	if (ret < 0) {
		dev_err(codec->dev, "Failed to set cpu dai format: %d\n", ret);
		return ret;
	}

	return 0;
}

static struct snd_soc_dai_link qi_lb60_dai = {
	.name = "jz4740",
	.stream_name = "jz4740",
	.cpu_dai_name = "jz4740-i2s",
	.platform_name = "jz4740-pcm-audio",
	.codec_dai_name = "jz4740-hifi",
	.codec_name = "jz4740-codec",
	.init = qi_lb60_codec_init,
};

static struct snd_soc_card qi_lb60 = {
	.name = "QI LB60",
	.owner = THIS_MODULE,
	.dai_link = &qi_lb60_dai,
	.num_links = 1,

	.dapm_widgets = qi_lb60_widgets,
	.num_dapm_widgets = ARRAY_SIZE(qi_lb60_widgets),
	.dapm_routes = qi_lb60_routes,
	.num_dapm_routes = ARRAY_SIZE(qi_lb60_routes),
};

static const struct gpio qi_lb60_gpios[] = {
	{ QI_LB60_SND_GPIO, GPIOF_OUT_INIT_LOW, "SND" },
	{ QI_LB60_AMP_GPIO, GPIOF_OUT_INIT_LOW, "AMP" },
};

static int __devinit qi_lb60_probe(struct platform_device *pdev)
{
	struct snd_soc_card *card = &qi_lb60;
	int ret;

	ret = gpio_request_array(qi_lb60_gpios, ARRAY_SIZE(qi_lb60_gpios));
	if (ret)
		return ret;

	card->dev = &pdev->dev;

	ret = snd_soc_register_card(card);
	if (ret) {
		dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n",
			ret);
		gpio_free_array(qi_lb60_gpios, ARRAY_SIZE(qi_lb60_gpios));
	}
	return ret;
}

static int __devexit qi_lb60_remove(struct platform_device *pdev)
{
	struct snd_soc_card *card = platform_get_drvdata(pdev);

	snd_soc_unregister_card(card);
	gpio_free_array(qi_lb60_gpios, ARRAY_SIZE(qi_lb60_gpios));
	return 0;
}

static struct platform_driver qi_lb60_driver = {
	.driver		= {
		.name	= "qi-lb60-audio",
		.owner	= THIS_MODULE,
	},
	.probe		= qi_lb60_probe,
	.remove		= __devexit_p(qi_lb60_remove),
};

module_platform_driver(qi_lb60_driver);

MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>");
MODULE_DESCRIPTION("ALSA SoC QI LB60 Audio support");
MODULE_LICENSE("GPL v2");
MODULE_ALIAS("platform:qi-lb60-audio");
Commit	Line	Data
5898dd9e LPC	1	/*
	2	* Copyright (C) 2009, Lars-Peter Clausen <lars@metafoo.de>
	3	*
	4	* This program is free software; you can redistribute it and/or modify
	5	* it under the terms of the GNU General Public License version 2 as
	6	* published by the Free Software Foundation.
	7	*
	8	* You should have received a copy of the GNU General Public License along
	9	* with this program; if not, write to the Free Software Foundation, Inc.,
	10	* 675 Mass Ave, Cambridge, MA 02139, USA.
	11	*
	12	*/
	13
	14	#include <linux/module.h>
	15	#include <linux/moduleparam.h>
	16	#include <linux/timer.h>
	17	#include <linux/interrupt.h>
	18	#include <linux/platform_device.h>
	19	#include <sound/core.h>
	20	#include <sound/pcm.h>
	21	#include <sound/soc.h>
5898dd9e LPC	22	#include <linux/gpio.h>
5898dd9e LPC	23
5898dd9e LPC	24	#define QI_LB60_SND_GPIO JZ_GPIO_PORTB(29)
	25	#define QI_LB60_AMP_GPIO JZ_GPIO_PORTD(4)
	26
	27	static int qi_lb60_spk_event(struct snd_soc_dapm_widget *widget,
	28	struct snd_kcontrol *ctrl, int event)
	29	{
621206b7	30	int on = !SND_SOC_DAPM_EVENT_OFF(event);
5898dd9e LPC	31
	32	gpio_set_value(QI_LB60_SND_GPIO, on);
	33	gpio_set_value(QI_LB60_AMP_GPIO, on);
	34
	35	return 0;
	36	}
	37
	38	static const struct snd_soc_dapm_widget qi_lb60_widgets[] = {
	39	SND_SOC_DAPM_SPK("Speaker", qi_lb60_spk_event),
	40	SND_SOC_DAPM_MIC("Mic", NULL),
	41	};
	42
	43	static const struct snd_soc_dapm_route qi_lb60_routes[] = {
	44	{"Mic", NULL, "MIC"},
	45	{"Speaker", NULL, "LOUT"},
	46	{"Speaker", NULL, "ROUT"},
	47	};
	48
	49	#define QI_LB60_DAIFMT (SND_SOC_DAIFMT_I2S \| \
	50	SND_SOC_DAIFMT_NB_NF \| \
	51	SND_SOC_DAIFMT_CBM_CFM)
	52
f0fba2ad	53	static int qi_lb60_codec_init(struct snd_soc_pcm_runtime *rtd)
5898dd9e	54	{
f0fba2ad LG	55	struct snd_soc_codec *codec = rtd->codec;
f0fba2ad LG	56	struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
ce6120cc	57	struct snd_soc_dapm_context *dapm = &codec->dapm;
5898dd9e	58	int ret;
5898dd9e	59
ce6120cc LG	60	snd_soc_dapm_nc_pin(dapm, "LIN");
ce6120cc LG	61	snd_soc_dapm_nc_pin(dapm, "RIN");
5898dd9e LPC	62
	63	ret = snd_soc_dai_set_fmt(cpu_dai, QI_LB60_DAIFMT);
	64	if (ret < 0) {
	65	dev_err(codec->dev, "Failed to set cpu dai format: %d\n", ret);
	66	return ret;
	67	}
	68
5898dd9e LPC	69	return 0;
	70	}
	71
	72	static struct snd_soc_dai_link qi_lb60_dai = {
	73	.name = "jz4740",
	74	.stream_name = "jz4740",
f0fba2ad	75	.cpu_dai_name = "jz4740-i2s",
3ca2ecd9	76	.platform_name = "jz4740-pcm-audio",
f0fba2ad LG	77	.codec_dai_name = "jz4740-hifi",
f0fba2ad LG	78	.codec_name = "jz4740-codec",
5898dd9e LPC	79	.init = qi_lb60_codec_init,
	80	};
	81
	82	static struct snd_soc_card qi_lb60 = {
	83	.name = "QI LB60",
1d9d25b3	84	.owner = THIS_MODULE,
5898dd9e LPC	85	.dai_link = &qi_lb60_dai,
5898dd9e LPC	86	.num_links = 1,
13319699 LPC	87
	88	.dapm_widgets = qi_lb60_widgets,
	89	.num_dapm_widgets = ARRAY_SIZE(qi_lb60_widgets),
	90	.dapm_routes = qi_lb60_routes,
	91	.num_dapm_routes = ARRAY_SIZE(qi_lb60_routes),
5898dd9e LPC	92	};
5898dd9e LPC	93
c6f0ede7 LPC	94	static const struct gpio qi_lb60_gpios[] = {
	95	{ QI_LB60_SND_GPIO, GPIOF_OUT_INIT_LOW, "SND" },
	96	{ QI_LB60_AMP_GPIO, GPIOF_OUT_INIT_LOW, "AMP" },
	97	};
	98
b33005f3	99	static int __devinit qi_lb60_probe(struct platform_device *pdev)
5898dd9e	100	{
b33005f3	101	struct snd_soc_card *card = &qi_lb60;
5898dd9e LPC	102	int ret;
5898dd9e LPC	103
c6f0ede7	104	ret = gpio_request_array(qi_lb60_gpios, ARRAY_SIZE(qi_lb60_gpios));
b33005f3 AL	105	if (ret)
b33005f3 AL	106	return ret;
5898dd9e	107
b33005f3	108	card->dev = &pdev->dev;
5898dd9e	109
b33005f3	110	ret = snd_soc_register_card(card);
5898dd9e	111	if (ret) {
b33005f3 AL	112	dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n",
	113	ret);
	114	gpio_free_array(qi_lb60_gpios, ARRAY_SIZE(qi_lb60_gpios));
5898dd9e	115	}
5898dd9e LPC	116	return ret;
5898dd9e LPC	117	}
5898dd9e	118
b33005f3	119	static int __devexit qi_lb60_remove(struct platform_device *pdev)
5898dd9e	120	{
b33005f3 AL	121	struct snd_soc_card *card = platform_get_drvdata(pdev);
	122
	123	snd_soc_unregister_card(card);
c6f0ede7	124	gpio_free_array(qi_lb60_gpios, ARRAY_SIZE(qi_lb60_gpios));
b33005f3	125	return 0;
5898dd9e	126	}
b33005f3 AL	127
	128	static struct platform_driver qi_lb60_driver = {
	129	.driver = {
	130	.name = "qi-lb60-audio",
	131	.owner = THIS_MODULE,
	132	},
	133	.probe = qi_lb60_probe,
	134	.remove = __devexit_p(qi_lb60_remove),
	135	};
	136
	137	module_platform_driver(qi_lb60_driver);
5898dd9e LPC	138
	139	MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>");
	140	MODULE_DESCRIPTION("ALSA SoC QI LB60 Audio support");
	141	MODULE_LICENSE("GPL v2");
b33005f3	142	MODULE_ALIAS("platform:qi-lb60-audio");