[linux-2.6-block.git] / sound / soc / pxa / hx4700.c

/*
 * SoC audio for HP iPAQ hx4700
 *
 * Copyright (c) 2009 Philipp Zabel
 *
 *  This program is free software; you can redistribute  it and/or modify it
 *  under  the terms of  the GNU General  Public License as published by the
 *  Free Software Foundation;  either version 2 of the  License, or (at your
 *  option) any later version.
 *
 */

#include <linux/module.h>
#include <linux/timer.h>
#include <linux/interrupt.h>
#include <linux/platform_device.h>
#include <linux/delay.h>
#include <linux/gpio.h>

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

#include <mach/hx4700.h>
#include <asm/mach-types.h>
#include "pxa2xx-i2s.h"

static struct snd_soc_jack hs_jack;

/* Headphones jack detection DAPM pin */
static struct snd_soc_jack_pin hs_jack_pin[] = {
	{
		.pin	= "Headphone Jack",
		.mask	= SND_JACK_HEADPHONE,
	},
	{
		.pin	= "Speaker",
		/* disable speaker when hp jack is inserted */
		.mask   = SND_JACK_HEADPHONE,
		.invert	= 1,
	},
};

/* Headphones jack detection GPIO */
static struct snd_soc_jack_gpio hs_jack_gpio = {
	.gpio		= GPIO75_HX4700_EARPHONE_nDET,
	.invert		= true,
	.name		= "hp-gpio",
	.report		= SND_JACK_HEADPHONE,
	.debounce_time	= 200,
};

/*
 * iPAQ hx4700 uses I2S for capture and playback.
 */
static int hx4700_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;
	int ret = 0;

	/* set the I2S system clock as output */
	ret = snd_soc_dai_set_sysclk(cpu_dai, PXA2XX_I2S_SYSCLK, 0,
			SND_SOC_CLOCK_OUT);
	if (ret < 0)
		return ret;

	/* inform codec driver about clock freq *
	 * (PXA I2S always uses divider 256)    */
	ret = snd_soc_dai_set_sysclk(codec_dai, 0, 256 * params_rate(params),
			SND_SOC_CLOCK_IN);
	if (ret < 0)
		return ret;

	return 0;
}

static const struct snd_soc_ops hx4700_ops = {
	.hw_params = hx4700_hw_params,
};

static int hx4700_spk_power(struct snd_soc_dapm_widget *w,
			    struct snd_kcontrol *k, int event)
{
	gpio_set_value(GPIO107_HX4700_SPK_nSD, !!SND_SOC_DAPM_EVENT_ON(event));
	return 0;
}

static int hx4700_hp_power(struct snd_soc_dapm_widget *w,
			   struct snd_kcontrol *k, int event)
{
	gpio_set_value(GPIO92_HX4700_HP_DRIVER, !!SND_SOC_DAPM_EVENT_ON(event));
	return 0;
}

/* hx4700 machine dapm widgets */
static const struct snd_soc_dapm_widget hx4700_dapm_widgets[] = {
	SND_SOC_DAPM_HP("Headphone Jack", hx4700_hp_power),
	SND_SOC_DAPM_SPK("Speaker", hx4700_spk_power),
	SND_SOC_DAPM_MIC("Built-in Microphone", NULL),
};

/* hx4700 machine audio_map */
static const struct snd_soc_dapm_route hx4700_audio_map[] = {

	/* Headphone connected to LOUT, ROUT */
	{"Headphone Jack", NULL, "LOUT"},
	{"Headphone Jack", NULL, "ROUT"},

	/* Speaker connected to MOUT2 */
	{"Speaker", NULL, "MOUT2"},

	/* Microphone connected to MICIN */
	{"MICIN", NULL, "Built-in Microphone"},
	{"AIN", NULL, "MICOUT"},
};

/*
 * Logic for a ak4641 as connected on a HP iPAQ hx4700
 */
static int hx4700_ak4641_init(struct snd_soc_pcm_runtime *rtd)
{
	int err;

	/* Jack detection API stuff */
	err = snd_soc_card_jack_new(rtd->card, "Headphone Jack",
				    SND_JACK_HEADPHONE, &hs_jack, hs_jack_pin,
				    ARRAY_SIZE(hs_jack_pin));
	if (err)
		return err;

	err = snd_soc_jack_add_gpios(&hs_jack, 1, &hs_jack_gpio);

	return err;
}

/* hx4700 digital audio interface glue - connects codec <--> CPU */
static struct snd_soc_dai_link hx4700_dai = {
	.name = "ak4641",
	.stream_name = "AK4641",
	.cpu_dai_name = "pxa2xx-i2s",
	.codec_dai_name = "ak4641-hifi",
	.platform_name = "pxa-pcm-audio",
	.codec_name = "ak4641.0-0012",
	.init = hx4700_ak4641_init,
	.dai_fmt = SND_SOC_DAIFMT_MSB | SND_SOC_DAIFMT_NB_NF |
		   SND_SOC_DAIFMT_CBS_CFS,
	.ops = &hx4700_ops,
};

/* hx4700 audio machine driver */
static struct snd_soc_card snd_soc_card_hx4700 = {
	.name			= "iPAQ hx4700",
	.owner			= THIS_MODULE,
	.dai_link		= &hx4700_dai,
	.num_links		= 1,
	.dapm_widgets		= hx4700_dapm_widgets,
	.num_dapm_widgets	= ARRAY_SIZE(hx4700_dapm_widgets),
	.dapm_routes		= hx4700_audio_map,
	.num_dapm_routes	= ARRAY_SIZE(hx4700_audio_map),
	.fully_routed		= true,
};

static struct gpio hx4700_audio_gpios[] = {
	{ GPIO107_HX4700_SPK_nSD, GPIOF_OUT_INIT_HIGH, "SPK_POWER" },
	{ GPIO92_HX4700_HP_DRIVER, GPIOF_OUT_INIT_LOW, "EP_POWER" },
};

static int hx4700_audio_probe(struct platform_device *pdev)
{
	int ret;

	if (!machine_is_h4700())
		return -ENODEV;

	ret = gpio_request_array(hx4700_audio_gpios,
				ARRAY_SIZE(hx4700_audio_gpios));
	if (ret)
		return ret;

	snd_soc_card_hx4700.dev = &pdev->dev;
	ret = devm_snd_soc_register_card(&pdev->dev, &snd_soc_card_hx4700);
	if (ret)
		gpio_free_array(hx4700_audio_gpios,
				ARRAY_SIZE(hx4700_audio_gpios));

	return ret;
}

static int hx4700_audio_remove(struct platform_device *pdev)
{
	gpio_set_value(GPIO92_HX4700_HP_DRIVER, 0);
	gpio_set_value(GPIO107_HX4700_SPK_nSD, 0);

	gpio_free_array(hx4700_audio_gpios, ARRAY_SIZE(hx4700_audio_gpios));
	return 0;
}

static struct platform_driver hx4700_audio_driver = {
	.driver	= {
		.name = "hx4700-audio",
		.pm = &snd_soc_pm_ops,
	},
	.probe	= hx4700_audio_probe,
	.remove	= hx4700_audio_remove,
};

module_platform_driver(hx4700_audio_driver);

MODULE_AUTHOR("Philipp Zabel");
MODULE_DESCRIPTION("ALSA SoC iPAQ hx4700");
MODULE_LICENSE("GPL");
MODULE_ALIAS("platform:hx4700-audio");
Commit	Line	Data
c26f642e DA	1	/*
	2	* SoC audio for HP iPAQ hx4700
	3	*
	4	* Copyright (c) 2009 Philipp Zabel
	5	*
	6	* This program is free software; you can redistribute it and/or modify it
	7	* under the terms of the GNU General Public License as published by the
	8	* Free Software Foundation; either version 2 of the License, or (at your
	9	* option) any later version.
	10	*
	11	*/
	12
	13	#include <linux/module.h>
	14	#include <linux/timer.h>
	15	#include <linux/interrupt.h>
	16	#include <linux/platform_device.h>
	17	#include <linux/delay.h>
	18	#include <linux/gpio.h>
	19
	20	#include <sound/core.h>
	21	#include <sound/jack.h>
	22	#include <sound/pcm.h>
	23	#include <sound/pcm_params.h>
	24	#include <sound/soc.h>
	25
	26	#include <mach/hx4700.h>
	27	#include <asm/mach-types.h>
	28	#include "pxa2xx-i2s.h"
	29
c26f642e DA	30	static struct snd_soc_jack hs_jack;
	31
	32	/* Headphones jack detection DAPM pin */
	33	static struct snd_soc_jack_pin hs_jack_pin[] = {
	34	{
	35	.pin = "Headphone Jack",
	36	.mask = SND_JACK_HEADPHONE,
	37	},
	38	{
	39	.pin = "Speaker",
	40	/* disable speaker when hp jack is inserted */
	41	.mask = SND_JACK_HEADPHONE,
	42	.invert = 1,
	43	},
	44	};
	45
	46	/* Headphones jack detection GPIO */
	47	static struct snd_soc_jack_gpio hs_jack_gpio = {
	48	.gpio = GPIO75_HX4700_EARPHONE_nDET,
	49	.invert = true,
	50	.name = "hp-gpio",
	51	.report = SND_JACK_HEADPHONE,
	52	.debounce_time = 200,
	53	};
	54
	55	/*
	56	* iPAQ hx4700 uses I2S for capture and playback.
	57	*/
	58	static int hx4700_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;
	64	int ret = 0;
	65
c26f642e DA	66	/* set the I2S system clock as output */
	67	ret = snd_soc_dai_set_sysclk(cpu_dai, PXA2XX_I2S_SYSCLK, 0,
	68	SND_SOC_CLOCK_OUT);
	69	if (ret < 0)
	70	return ret;
	71
	72	/* inform codec driver about clock freq *
	73	* (PXA I2S always uses divider 256) */
	74	ret = snd_soc_dai_set_sysclk(codec_dai, 0, 256 * params_rate(params),
	75	SND_SOC_CLOCK_IN);
	76	if (ret < 0)
	77	return ret;
	78
	79	return 0;
	80	}
	81
943b7311	82	static const struct snd_soc_ops hx4700_ops = {
c26f642e DA	83	.hw_params = hx4700_hw_params,
	84	};
	85
	86	static int hx4700_spk_power(struct snd_soc_dapm_widget *w,
	87	struct snd_kcontrol *k, int event)
	88	{
	89	gpio_set_value(GPIO107_HX4700_SPK_nSD, !!SND_SOC_DAPM_EVENT_ON(event));
	90	return 0;
	91	}
	92
	93	static int hx4700_hp_power(struct snd_soc_dapm_widget *w,
	94	struct snd_kcontrol *k, int event)
	95	{
	96	gpio_set_value(GPIO92_HX4700_HP_DRIVER, !!SND_SOC_DAPM_EVENT_ON(event));
	97	return 0;
	98	}
	99
	100	/* hx4700 machine dapm widgets */
	101	static const struct snd_soc_dapm_widget hx4700_dapm_widgets[] = {
	102	SND_SOC_DAPM_HP("Headphone Jack", hx4700_hp_power),
	103	SND_SOC_DAPM_SPK("Speaker", hx4700_spk_power),
	104	SND_SOC_DAPM_MIC("Built-in Microphone", NULL),
	105	};
	106
	107	/* hx4700 machine audio_map */
	108	static const struct snd_soc_dapm_route hx4700_audio_map[] = {
	109
	110	/* Headphone connected to LOUT, ROUT */
	111	{"Headphone Jack", NULL, "LOUT"},
	112	{"Headphone Jack", NULL, "ROUT"},
	113
	114	/* Speaker connected to MOUT2 */
	115	{"Speaker", NULL, "MOUT2"},
	116
	117	/* Microphone connected to MICIN */
	118	{"MICIN", NULL, "Built-in Microphone"},
	119	{"AIN", NULL, "MICOUT"},
	120	};
	121
	122	/*
	123	* Logic for a ak4641 as connected on a HP iPAQ hx4700
	124	*/
	125	static int hx4700_ak4641_init(struct snd_soc_pcm_runtime *rtd)
	126	{
c26f642e DA	127	int err;
c26f642e DA	128
c26f642e	129	/* Jack detection API stuff */
f7a4433b LPC	130	err = snd_soc_card_jack_new(rtd->card, "Headphone Jack",
	131	SND_JACK_HEADPHONE, &hs_jack, hs_jack_pin,
	132	ARRAY_SIZE(hs_jack_pin));
c26f642e DA	133	if (err)
	134	return err;
	135
	136	err = snd_soc_jack_add_gpios(&hs_jack, 1, &hs_jack_gpio);
	137
	138	return err;
	139	}
	140
	141	/* hx4700 digital audio interface glue - connects codec <--> CPU */
	142	static struct snd_soc_dai_link hx4700_dai = {
	143	.name = "ak4641",
	144	.stream_name = "AK4641",
	145	.cpu_dai_name = "pxa2xx-i2s",
	146	.codec_dai_name = "ak4641-hifi",
	147	.platform_name = "pxa-pcm-audio",
	148	.codec_name = "ak4641.0-0012",
	149	.init = hx4700_ak4641_init,
673847cf AL	150	.dai_fmt = SND_SOC_DAIFMT_MSB \| SND_SOC_DAIFMT_NB_NF \|
673847cf AL	151	SND_SOC_DAIFMT_CBS_CFS,
c26f642e DA	152	.ops = &hx4700_ops,
	153	};
	154
	155	/* hx4700 audio machine driver */
	156	static struct snd_soc_card snd_soc_card_hx4700 = {
	157	.name = "iPAQ hx4700",
561c6a17	158	.owner = THIS_MODULE,
c26f642e DA	159	.dai_link = &hx4700_dai,
	160	.num_links = 1,
	161	.dapm_widgets = hx4700_dapm_widgets,
	162	.num_dapm_widgets = ARRAY_SIZE(hx4700_dapm_widgets),
	163	.dapm_routes = hx4700_audio_map,
	164	.num_dapm_routes = ARRAY_SIZE(hx4700_audio_map),
c529d0a4	165	.fully_routed = true,
c26f642e DA	166	};
	167
	168	static struct gpio hx4700_audio_gpios[] = {
	169	{ GPIO107_HX4700_SPK_nSD, GPIOF_OUT_INIT_HIGH, "SPK_POWER" },
	170	{ GPIO92_HX4700_HP_DRIVER, GPIOF_OUT_INIT_LOW, "EP_POWER" },
	171	};
	172
d7f1be84	173	static int hx4700_audio_probe(struct platform_device *pdev)
c26f642e DA	174	{
	175	int ret;
	176
	177	if (!machine_is_h4700())
	178	return -ENODEV;
	179
	180	ret = gpio_request_array(hx4700_audio_gpios,
	181	ARRAY_SIZE(hx4700_audio_gpios));
	182	if (ret)
	183	return ret;
	184
	185	snd_soc_card_hx4700.dev = &pdev->dev;
2fd7076a	186	ret = devm_snd_soc_register_card(&pdev->dev, &snd_soc_card_hx4700);
c26f642e	187	if (ret)
497d4965 AL	188	gpio_free_array(hx4700_audio_gpios,
497d4965 AL	189	ARRAY_SIZE(hx4700_audio_gpios));
c26f642e	190
497d4965	191	return ret;
c26f642e DA	192	}
c26f642e DA	193
d7f1be84	194	static int hx4700_audio_remove(struct platform_device *pdev)
c26f642e	195	{
c26f642e DA	196	gpio_set_value(GPIO92_HX4700_HP_DRIVER, 0);
	197	gpio_set_value(GPIO107_HX4700_SPK_nSD, 0);
	198
	199	gpio_free_array(hx4700_audio_gpios, ARRAY_SIZE(hx4700_audio_gpios));
	200	return 0;
	201	}
	202
	203	static struct platform_driver hx4700_audio_driver = {
	204	.driver = {
	205	.name = "hx4700-audio",
c26f642e DA	206	.pm = &snd_soc_pm_ops,
	207	},
	208	.probe = hx4700_audio_probe,
d7f1be84	209	.remove = hx4700_audio_remove,
c26f642e DA	210	};
c26f642e DA	211
2f702a19	212	module_platform_driver(hx4700_audio_driver);
c26f642e DA	213
	214	MODULE_AUTHOR("Philipp Zabel");
	215	MODULE_DESCRIPTION("ALSA SoC iPAQ hx4700");
	216	MODULE_LICENSE("GPL");
	217	MODULE_ALIAS("platform:hx4700-audio");