[deliverable/linux.git] / sound / soc / pxa / poodle.c

/*
 * poodle.c  --  SoC audio for Poodle
 *
 * Copyright 2005 Wolfson Microelectronics PLC.
 * Copyright 2005 Openedhand Ltd.
 *
 * Authors: Liam Girdwood <lrg@slimlogic.co.uk>
 *          Richard Purdie <richard@openedhand.com>
 *
 *  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/moduleparam.h>
#include <linux/timer.h>
#include <linux/i2c.h>
#include <linux/interrupt.h>
#include <linux/platform_device.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/soc.h>

#include <asm/mach-types.h>
#include <asm/hardware/locomo.h>
#include <mach/poodle.h>
#include <mach/audio.h>

#include "../codecs/wm8731.h"
#include "pxa2xx-i2s.h"

#define POODLE_HP        1
#define POODLE_HP_OFF    0
#define POODLE_SPK_ON    1
#define POODLE_SPK_OFF   0

 /* audio clock in Hz - rounded from 12.235MHz */
#define POODLE_AUDIO_CLOCK 12288000

static int poodle_jack_func;
static int poodle_spk_func;

static void poodle_ext_control(struct snd_soc_dapm_context *dapm)
{
	/* set up jack connection */
	if (poodle_jack_func == POODLE_HP) {
		/* set = unmute headphone */
		locomo_gpio_write(&poodle_locomo_device.dev,
			POODLE_LOCOMO_GPIO_MUTE_L, 1);
		locomo_gpio_write(&poodle_locomo_device.dev,
			POODLE_LOCOMO_GPIO_MUTE_R, 1);
		snd_soc_dapm_enable_pin(dapm, "Headphone Jack");
	} else {
		locomo_gpio_write(&poodle_locomo_device.dev,
			POODLE_LOCOMO_GPIO_MUTE_L, 0);
		locomo_gpio_write(&poodle_locomo_device.dev,
			POODLE_LOCOMO_GPIO_MUTE_R, 0);
		snd_soc_dapm_disable_pin(dapm, "Headphone Jack");
	}

	/* set the enpoints to their new connetion states */
	if (poodle_spk_func == POODLE_SPK_ON)
		snd_soc_dapm_enable_pin(dapm, "Ext Spk");
	else
		snd_soc_dapm_disable_pin(dapm, "Ext Spk");

	/* signal a DAPM event */
	snd_soc_dapm_sync(dapm);
}

static int poodle_startup(struct snd_pcm_substream *substream)
{
	struct snd_soc_pcm_runtime *rtd = substream->private_data;

	/* check the jack status at stream startup */
	poodle_ext_control(&rtd->card->dapm);

	return 0;
}

/* we need to unmute the HP at shutdown as the mute burns power on poodle */
static void poodle_shutdown(struct snd_pcm_substream *substream)
{
	/* set = unmute headphone */
	locomo_gpio_write(&poodle_locomo_device.dev,
		POODLE_LOCOMO_GPIO_MUTE_L, 1);
	locomo_gpio_write(&poodle_locomo_device.dev,
		POODLE_LOCOMO_GPIO_MUTE_R, 1);
}

static int poodle_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;
	unsigned int clk = 0;
	int ret = 0;

	switch (params_rate(params)) {
	case 8000:
	case 16000:
	case 48000:
	case 96000:
		clk = 12288000;
		break;
	case 11025:
	case 22050:
	case 44100:
		clk = 11289600;
		break;
	}

	/* set the codec system clock for DAC and ADC */
	ret = snd_soc_dai_set_sysclk(codec_dai, WM8731_SYSCLK_XTAL, clk,
		SND_SOC_CLOCK_IN);
	if (ret < 0)
		return ret;

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

	return 0;
}

static struct snd_soc_ops poodle_ops = {
	.startup = poodle_startup,
	.hw_params = poodle_hw_params,
	.shutdown = poodle_shutdown,
};

static int poodle_get_jack(struct snd_kcontrol *kcontrol,
	struct snd_ctl_elem_value *ucontrol)
{
	ucontrol->value.enumerated.item[0] = poodle_jack_func;
	return 0;
}

static int poodle_set_jack(struct snd_kcontrol *kcontrol,
	struct snd_ctl_elem_value *ucontrol)
{
	struct snd_soc_card *card =  snd_kcontrol_chip(kcontrol);

	if (poodle_jack_func == ucontrol->value.enumerated.item[0])
		return 0;

	poodle_jack_func = ucontrol->value.enumerated.item[0];
	poodle_ext_control(&card->dapm);
	return 1;
}

static int poodle_get_spk(struct snd_kcontrol *kcontrol,
	struct snd_ctl_elem_value *ucontrol)
{
	ucontrol->value.enumerated.item[0] = poodle_spk_func;
	return 0;
}

static int poodle_set_spk(struct snd_kcontrol *kcontrol,
	struct snd_ctl_elem_value *ucontrol)
{
	struct snd_soc_card *card =  snd_kcontrol_chip(kcontrol);

	if (poodle_spk_func == ucontrol->value.enumerated.item[0])
		return 0;

	poodle_spk_func = ucontrol->value.enumerated.item[0];
	poodle_ext_control(&card->dapm);
	return 1;
}

static int poodle_amp_event(struct snd_soc_dapm_widget *w,
	struct snd_kcontrol *k, int event)
{
	if (SND_SOC_DAPM_EVENT_ON(event))
		locomo_gpio_write(&poodle_locomo_device.dev,
			POODLE_LOCOMO_GPIO_AMP_ON, 0);
	else
		locomo_gpio_write(&poodle_locomo_device.dev,
			POODLE_LOCOMO_GPIO_AMP_ON, 1);

	return 0;
}

/* poodle machine dapm widgets */
static const struct snd_soc_dapm_widget wm8731_dapm_widgets[] = {
SND_SOC_DAPM_HP("Headphone Jack", NULL),
SND_SOC_DAPM_SPK("Ext Spk", poodle_amp_event),
SND_SOC_DAPM_MIC("Microphone", NULL),
};

/* Corgi machine connections to the codec pins */
static const struct snd_soc_dapm_route poodle_audio_map[] = {

	/* headphone connected to LHPOUT1, RHPOUT1 */
	{"Headphone Jack", NULL, "LHPOUT"},
	{"Headphone Jack", NULL, "RHPOUT"},

	/* speaker connected to LOUT, ROUT */
	{"Ext Spk", NULL, "ROUT"},
	{"Ext Spk", NULL, "LOUT"},

	{"MICIN", NULL, "Microphone"},
};

static const char *jack_function[] = {"Off", "Headphone"};
static const char *spk_function[] = {"Off", "On"};
static const struct soc_enum poodle_enum[] = {
	SOC_ENUM_SINGLE_EXT(2, jack_function),
	SOC_ENUM_SINGLE_EXT(2, spk_function),
};

static const struct snd_kcontrol_new wm8731_poodle_controls[] = {
	SOC_ENUM_EXT("Jack Function", poodle_enum[0], poodle_get_jack,
		poodle_set_jack),
	SOC_ENUM_EXT("Speaker Function", poodle_enum[1], poodle_get_spk,
		poodle_set_spk),
};

/* poodle digital audio interface glue - connects codec <--> CPU */
static struct snd_soc_dai_link poodle_dai = {
	.name = "WM8731",
	.stream_name = "WM8731",
	.cpu_dai_name = "pxa2xx-i2s",
	.codec_dai_name = "wm8731-hifi",
	.platform_name = "pxa-pcm-audio",
	.codec_name = "wm8731.0-001b",
	.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
		   SND_SOC_DAIFMT_CBS_CFS,
	.ops = &poodle_ops,
};

/* poodle audio machine driver */
static struct snd_soc_card poodle = {
	.name = "Poodle",
	.dai_link = &poodle_dai,
	.num_links = 1,
	.owner = THIS_MODULE,

	.controls = wm8731_poodle_controls,
	.num_controls = ARRAY_SIZE(wm8731_poodle_controls),
	.dapm_widgets = wm8731_dapm_widgets,
	.num_dapm_widgets = ARRAY_SIZE(wm8731_dapm_widgets),
	.dapm_routes = poodle_audio_map,
	.num_dapm_routes = ARRAY_SIZE(poodle_audio_map),
	.fully_routed = true,
};

static int poodle_probe(struct platform_device *pdev)
{
	struct snd_soc_card *card = &poodle;
	int ret;

	locomo_gpio_set_dir(&poodle_locomo_device.dev,
		POODLE_LOCOMO_GPIO_AMP_ON, 0);
	/* should we mute HP at startup - burning power ?*/
	locomo_gpio_set_dir(&poodle_locomo_device.dev,
		POODLE_LOCOMO_GPIO_MUTE_L, 0);
	locomo_gpio_set_dir(&poodle_locomo_device.dev,
		POODLE_LOCOMO_GPIO_MUTE_R, 0);

	card->dev = &pdev->dev;

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

static struct platform_driver poodle_driver = {
	.driver		= {
		.name	= "poodle-audio",
		.pm     = &snd_soc_pm_ops,
	},
	.probe		= poodle_probe,
};

module_platform_driver(poodle_driver);

/* Module information */
MODULE_AUTHOR("Richard Purdie");
MODULE_DESCRIPTION("ALSA SoC Poodle");
MODULE_LICENSE("GPL");
MODULE_ALIAS("platform:poodle-audio");
Commit	Line	Data
6e24dd93 LG	1	/*
	2	* poodle.c -- SoC audio for Poodle
	3	*
	4	* Copyright 2005 Wolfson Microelectronics PLC.
	5	* Copyright 2005 Openedhand Ltd.
	6	*
d331124d	7	* Authors: Liam Girdwood <lrg@slimlogic.co.uk>
6e24dd93 LG	8	* Richard Purdie <richard@openedhand.com>
	9	*
	10	* This program is free software; you can redistribute it and/or modify it
	11	* under the terms of the GNU General Public License as published by the
	12	* Free Software Foundation; either version 2 of the License, or (at your
	13	* option) any later version.
	14	*
	15	*/
	16
	17	#include <linux/module.h>
	18	#include <linux/moduleparam.h>
	19	#include <linux/timer.h>
fc996757	20	#include <linux/i2c.h>
6e24dd93 LG	21	#include <linux/interrupt.h>
6e24dd93 LG	22	#include <linux/platform_device.h>
6e24dd93 LG	23	#include <sound/core.h>
	24	#include <sound/pcm.h>
	25	#include <sound/soc.h>
6e24dd93 LG	26
	27	#include <asm/mach-types.h>
	28	#include <asm/hardware/locomo.h>
a09e64fb RK	29	#include <mach/poodle.h>
a09e64fb RK	30	#include <mach/audio.h>
6e24dd93 LG	31
6e24dd93 LG	32	#include "../codecs/wm8731.h"
73f40dc1	33	#include "pxa2xx-i2s.h"
6e24dd93 LG	34
	35	#define POODLE_HP 1
	36	#define POODLE_HP_OFF 0
	37	#define POODLE_SPK_ON 1
	38	#define POODLE_SPK_OFF 0
	39
	40	/* audio clock in Hz - rounded from 12.235MHz */
	41	#define POODLE_AUDIO_CLOCK 12288000
	42
	43	static int poodle_jack_func;
	44	static int poodle_spk_func;
	45
022658be	46	static void poodle_ext_control(struct snd_soc_dapm_context *dapm)
6e24dd93	47	{
6e24dd93 LG	48	/* set up jack connection */
	49	if (poodle_jack_func == POODLE_HP) {
	50	/* set = unmute headphone */
	51	locomo_gpio_write(&poodle_locomo_device.dev,
	52	POODLE_LOCOMO_GPIO_MUTE_L, 1);
	53	locomo_gpio_write(&poodle_locomo_device.dev,
	54	POODLE_LOCOMO_GPIO_MUTE_R, 1);
ce6120cc	55	snd_soc_dapm_enable_pin(dapm, "Headphone Jack");
6e24dd93 LG	56	} else {
	57	locomo_gpio_write(&poodle_locomo_device.dev,
	58	POODLE_LOCOMO_GPIO_MUTE_L, 0);
	59	locomo_gpio_write(&poodle_locomo_device.dev,
	60	POODLE_LOCOMO_GPIO_MUTE_R, 0);
ce6120cc	61	snd_soc_dapm_disable_pin(dapm, "Headphone Jack");
6e24dd93 LG	62	}
6e24dd93 LG	63
6e24dd93	64	/* set the enpoints to their new connetion states */
a5302181	65	if (poodle_spk_func == POODLE_SPK_ON)
ce6120cc	66	snd_soc_dapm_enable_pin(dapm, "Ext Spk");
a5302181	67	else
ce6120cc	68	snd_soc_dapm_disable_pin(dapm, "Ext Spk");
6e24dd93 LG	69
6e24dd93 LG	70	/* signal a DAPM event */
ce6120cc	71	snd_soc_dapm_sync(dapm);
6e24dd93 LG	72	}
	73
	74	static int poodle_startup(struct snd_pcm_substream *substream)
	75	{
	76	struct snd_soc_pcm_runtime *rtd = substream->private_data;
6e24dd93 LG	77
6e24dd93 LG	78	/* check the jack status at stream startup */
e14de47a	79	poodle_ext_control(&rtd->card->dapm);
71a29560	80
6e24dd93 LG	81	return 0;
	82	}
	83
	84	/* we need to unmute the HP at shutdown as the mute burns power on poodle */
877db3c1	85	static void poodle_shutdown(struct snd_pcm_substream *substream)
6e24dd93	86	{
6e24dd93 LG	87	/* set = unmute headphone */
	88	locomo_gpio_write(&poodle_locomo_device.dev,
	89	POODLE_LOCOMO_GPIO_MUTE_L, 1);
	90	locomo_gpio_write(&poodle_locomo_device.dev,
	91	POODLE_LOCOMO_GPIO_MUTE_R, 1);
6e24dd93 LG	92	}
6e24dd93 LG	93
73f40dc1 LG	94	static int poodle_hw_params(struct snd_pcm_substream *substream,
	95	struct snd_pcm_hw_params *params)
	96	{
	97	struct snd_soc_pcm_runtime *rtd = substream->private_data;
f0fba2ad LG	98	struct snd_soc_dai *codec_dai = rtd->codec_dai;
f0fba2ad LG	99	struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
73f40dc1 LG	100	unsigned int clk = 0;
	101	int ret = 0;
	102
	103	switch (params_rate(params)) {
	104	case 8000:
	105	case 16000:
	106	case 48000:
	107	case 96000:
	108	clk = 12288000;
	109	break;
	110	case 11025:
	111	case 22050:
	112	case 44100:
	113	clk = 11289600;
	114	break;
	115	}
	116
73f40dc1	117	/* set the codec system clock for DAC and ADC */
e7712510	118	ret = snd_soc_dai_set_sysclk(codec_dai, WM8731_SYSCLK_XTAL, clk,
73f40dc1 LG	119	SND_SOC_CLOCK_IN);
	120	if (ret < 0)
	121	return ret;
	122
	123	/* set the I2S system clock as input (unused) */
64105cfd	124	ret = snd_soc_dai_set_sysclk(cpu_dai, PXA2XX_I2S_SYSCLK, 0,
73f40dc1 LG	125	SND_SOC_CLOCK_IN);
	126	if (ret < 0)
	127	return ret;
	128
	129	return 0;
	130	}
	131
6e24dd93 LG	132	static struct snd_soc_ops poodle_ops = {
6e24dd93 LG	133	.startup = poodle_startup,
73f40dc1	134	.hw_params = poodle_hw_params,
6e24dd93 LG	135	.shutdown = poodle_shutdown,
	136	};
	137
	138	static int poodle_get_jack(struct snd_kcontrol *kcontrol,
	139	struct snd_ctl_elem_value *ucontrol)
	140	{
7a3f4b48	141	ucontrol->value.enumerated.item[0] = poodle_jack_func;
6e24dd93 LG	142	return 0;
	143	}
	144
	145	static int poodle_set_jack(struct snd_kcontrol *kcontrol,
	146	struct snd_ctl_elem_value *ucontrol)
	147	{
022658be	148	struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
6e24dd93	149
7a3f4b48	150	if (poodle_jack_func == ucontrol->value.enumerated.item[0])
6e24dd93 LG	151	return 0;
6e24dd93 LG	152
7a3f4b48	153	poodle_jack_func = ucontrol->value.enumerated.item[0];
022658be	154	poodle_ext_control(&card->dapm);
6e24dd93 LG	155	return 1;
	156	}
	157
	158	static int poodle_get_spk(struct snd_kcontrol *kcontrol,
	159	struct snd_ctl_elem_value *ucontrol)
	160	{
7a3f4b48	161	ucontrol->value.enumerated.item[0] = poodle_spk_func;
6e24dd93 LG	162	return 0;
	163	}
	164
	165	static int poodle_set_spk(struct snd_kcontrol *kcontrol,
	166	struct snd_ctl_elem_value *ucontrol)
	167	{
022658be	168	struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
6e24dd93	169
7a3f4b48	170	if (poodle_spk_func == ucontrol->value.enumerated.item[0])
6e24dd93 LG	171	return 0;
6e24dd93 LG	172
7a3f4b48	173	poodle_spk_func = ucontrol->value.enumerated.item[0];
022658be	174	poodle_ext_control(&card->dapm);
6e24dd93 LG	175	return 1;
	176	}
	177
338c7ed0 JN	178	static int poodle_amp_event(struct snd_soc_dapm_widget *w,
338c7ed0 JN	179	struct snd_kcontrol *k, int event)
6e24dd93 LG	180	{
	181	if (SND_SOC_DAPM_EVENT_ON(event))
	182	locomo_gpio_write(&poodle_locomo_device.dev,
	183	POODLE_LOCOMO_GPIO_AMP_ON, 0);
	184	else
	185	locomo_gpio_write(&poodle_locomo_device.dev,
	186	POODLE_LOCOMO_GPIO_AMP_ON, 1);
	187
	188	return 0;
	189	}
	190
	191	/* poodle machine dapm widgets */
	192	static const struct snd_soc_dapm_widget wm8731_dapm_widgets[] = {
	193	SND_SOC_DAPM_HP("Headphone Jack", NULL),
	194	SND_SOC_DAPM_SPK("Ext Spk", poodle_amp_event),
9b44bacd	195	SND_SOC_DAPM_MIC("Microphone", NULL),
6e24dd93 LG	196	};
6e24dd93 LG	197
25191c45	198	/* Corgi machine connections to the codec pins */
fe366d06	199	static const struct snd_soc_dapm_route poodle_audio_map[] = {
6e24dd93 LG	200
	201	/* headphone connected to LHPOUT1, RHPOUT1 */
	202	{"Headphone Jack", NULL, "LHPOUT"},
	203	{"Headphone Jack", NULL, "RHPOUT"},
	204
	205	/* speaker connected to LOUT, ROUT */
	206	{"Ext Spk", NULL, "ROUT"},
	207	{"Ext Spk", NULL, "LOUT"},
9b44bacd LPC	208
9b44bacd LPC	209	{"MICIN", NULL, "Microphone"},
6e24dd93 LG	210	};
	211
	212	static const char *jack_function[] = {"Off", "Headphone"};
	213	static const char *spk_function[] = {"Off", "On"};
	214	static const struct soc_enum poodle_enum[] = {
	215	SOC_ENUM_SINGLE_EXT(2, jack_function),
	216	SOC_ENUM_SINGLE_EXT(2, spk_function),
	217	};
	218
877db3c1	219	static const struct snd_kcontrol_new wm8731_poodle_controls[] = {
6e24dd93 LG	220	SOC_ENUM_EXT("Jack Function", poodle_enum[0], poodle_get_jack,
	221	poodle_set_jack),
	222	SOC_ENUM_EXT("Speaker Function", poodle_enum[1], poodle_get_spk,
	223	poodle_set_spk),
	224	};
	225
6e24dd93 LG	226	/* poodle digital audio interface glue - connects codec <--> CPU */
	227	static struct snd_soc_dai_link poodle_dai = {
	228	.name = "WM8731",
	229	.stream_name = "WM8731",
a2a0086d	230	.cpu_dai_name = "pxa2xx-i2s",
1593d7dd	231	.codec_dai_name = "wm8731-hifi",
f0fba2ad	232	.platform_name = "pxa-pcm-audio",
99b59f3c	233	.codec_name = "wm8731.0-001b",
87063dfc AL	234	.dai_fmt = SND_SOC_DAIFMT_I2S \| SND_SOC_DAIFMT_NB_NF \|
87063dfc AL	235	SND_SOC_DAIFMT_CBS_CFS,
73f40dc1	236	.ops = &poodle_ops,
6e24dd93 LG	237	};
	238
	239	/* poodle audio machine driver */
2445ecc3	240	static struct snd_soc_card poodle = {
6e24dd93 LG	241	.name = "Poodle",
	242	.dai_link = &poodle_dai,
	243	.num_links = 1,
f0fba2ad	244	.owner = THIS_MODULE,
fe366d06 AL	245
	246	.controls = wm8731_poodle_controls,
	247	.num_controls = ARRAY_SIZE(wm8731_poodle_controls),
	248	.dapm_widgets = wm8731_dapm_widgets,
	249	.num_dapm_widgets = ARRAY_SIZE(wm8731_dapm_widgets),
	250	.dapm_routes = poodle_audio_map,
	251	.num_dapm_routes = ARRAY_SIZE(poodle_audio_map),
9b44bacd	252	.fully_routed = true,
6e24dd93 LG	253	};
6e24dd93 LG	254
570f6fe1	255	static int poodle_probe(struct platform_device *pdev)
6e24dd93	256	{
2445ecc3	257	struct snd_soc_card *card = &poodle;
6e24dd93 LG	258	int ret;
6e24dd93 LG	259
6e24dd93 LG	260	locomo_gpio_set_dir(&poodle_locomo_device.dev,
	261	POODLE_LOCOMO_GPIO_AMP_ON, 0);
	262	/* should we mute HP at startup - burning power ?*/
	263	locomo_gpio_set_dir(&poodle_locomo_device.dev,
	264	POODLE_LOCOMO_GPIO_MUTE_L, 0);
	265	locomo_gpio_set_dir(&poodle_locomo_device.dev,
	266	POODLE_LOCOMO_GPIO_MUTE_R, 0);
	267
2445ecc3	268	card->dev = &pdev->dev;
6e24dd93	269
2fd7076a	270	ret = devm_snd_soc_register_card(&pdev->dev, card);
6e24dd93	271	if (ret)
2445ecc3 AL	272	dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n",
2445ecc3 AL	273	ret);
6e24dd93 LG	274	return ret;
	275	}
	276
2445ecc3 AL	277	static struct platform_driver poodle_driver = {
	278	.driver = {
	279	.name = "poodle-audio",
7db1698f	280	.pm = &snd_soc_pm_ops,
2445ecc3 AL	281	},
2445ecc3 AL	282	.probe = poodle_probe,
2445ecc3 AL	283	};
	284
	285	module_platform_driver(poodle_driver);
6e24dd93 LG	286
	287	/* Module information */
	288	MODULE_AUTHOR("Richard Purdie");
	289	MODULE_DESCRIPTION("ALSA SoC Poodle");
	290	MODULE_LICENSE("GPL");
2445ecc3	291	MODULE_ALIAS("platform:poodle-audio");