[deliverable/linux.git] / sound / soc / pxa / z2.c

/*
 * linux/sound/soc/pxa/z2.c
 *
 * SoC Audio driver for Aeronix Zipit Z2
 *
 * Copyright (C) 2009 Ken McGuire <kenm@desertweyr.com>
 * Copyright (C) 2010 Marek Vasut <marek.vasut@gmail.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.
 */

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

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

#include <asm/mach-types.h>
#include <mach/hardware.h>
#include <mach/audio.h>
#include <mach/z2.h>

#include "../codecs/wm8750.h"
#include "pxa2xx-i2s.h"

static struct snd_soc_card snd_soc_z2;

static int z2_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, WM8750_SYSCLK, 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_jack hs_jack;

/* Headset jack detection DAPM pins */
static struct snd_soc_jack_pin hs_jack_pins[] = {
	{
		.pin	= "Mic Jack",
		.mask	= SND_JACK_MICROPHONE,
	},
	{
		.pin	= "Headphone Jack",
		.mask	= SND_JACK_HEADPHONE,
	},
	{
		.pin    = "Ext Spk",
		.mask   = SND_JACK_HEADPHONE,
		.invert = 1
	},
};

/* Headset jack detection gpios */
static struct snd_soc_jack_gpio hs_jack_gpios[] = {
	{
		.gpio		= GPIO37_ZIPITZ2_HEADSET_DETECT,
		.name		= "hsdet-gpio",
		.report		= SND_JACK_HEADSET,
		.debounce_time	= 200,
		.invert		= 1,
	},
};

/* z2 machine dapm widgets */
static const struct snd_soc_dapm_widget wm8750_dapm_widgets[] = {
	SND_SOC_DAPM_HP("Headphone Jack", NULL),
	SND_SOC_DAPM_MIC("Mic Jack", NULL),
	SND_SOC_DAPM_SPK("Ext Spk", NULL),

	/* headset is a mic and mono headphone */
	SND_SOC_DAPM_HP("Headset Jack", NULL),
};

/* Z2 machine audio_map */
static const struct snd_soc_dapm_route z2_audio_map[] = {

	/* headphone connected to LOUT1, ROUT1 */
	{"Headphone Jack", NULL, "LOUT1"},
	{"Headphone Jack", NULL, "ROUT1"},

	/* ext speaker connected to LOUT2, ROUT2  */
	{"Ext Spk", NULL , "ROUT2"},
	{"Ext Spk", NULL , "LOUT2"},

	/* mic is connected to R input 2 - with bias */
	{"RINPUT2", NULL, "Mic Bias"},
	{"Mic Bias", NULL, "Mic Jack"},
};

/*
 * Logic for a wm8750 as connected on a Z2 Device
 */
static int z2_wm8750_init(struct snd_soc_pcm_runtime *rtd)
{
	struct snd_soc_codec *codec = rtd->codec;
	struct snd_soc_dapm_context *dapm = &codec->dapm;
	int ret;

	/* NC codec pins */
	snd_soc_dapm_disable_pin(dapm, "LINPUT3");
	snd_soc_dapm_disable_pin(dapm, "RINPUT3");
	snd_soc_dapm_disable_pin(dapm, "OUT3");
	snd_soc_dapm_disable_pin(dapm, "MONO1");

	/* Jack detection API stuff */
	ret = snd_soc_card_jack_new(rtd->card, "Headset Jack", SND_JACK_HEADSET,
				    &hs_jack, hs_jack_pins,
				    ARRAY_SIZE(hs_jack_pins));
	if (ret)
		goto err;

	ret = snd_soc_jack_add_gpios(&hs_jack, ARRAY_SIZE(hs_jack_gpios),
				hs_jack_gpios);
	if (ret)
		goto err;

	return 0;

err:
	return ret;
}

static struct snd_soc_ops z2_ops = {
	.hw_params = z2_hw_params,
};

/* z2 digital audio interface glue - connects codec <--> CPU */
static struct snd_soc_dai_link z2_dai = {
	.name		= "wm8750",
	.stream_name	= "WM8750",
	.cpu_dai_name	= "pxa2xx-i2s",
	.codec_dai_name	= "wm8750-hifi",
	.platform_name = "pxa-pcm-audio",
	.codec_name	= "wm8750.0-001b",
	.init		= z2_wm8750_init,
	.dai_fmt	= SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
			  SND_SOC_DAIFMT_CBS_CFS,
	.ops		= &z2_ops,
};

/* z2 audio machine driver */
static struct snd_soc_card snd_soc_z2 = {
	.name		= "Z2",
	.owner		= THIS_MODULE,
	.dai_link	= &z2_dai,
	.num_links	= 1,

	.dapm_widgets = wm8750_dapm_widgets,
	.num_dapm_widgets = ARRAY_SIZE(wm8750_dapm_widgets),
	.dapm_routes = z2_audio_map,
	.num_dapm_routes = ARRAY_SIZE(z2_audio_map),
};

static struct platform_device *z2_snd_device;

static int __init z2_init(void)
{
	int ret;

	if (!machine_is_zipit2())
		return -ENODEV;

	z2_snd_device = platform_device_alloc("soc-audio", -1);
	if (!z2_snd_device)
		return -ENOMEM;

	platform_set_drvdata(z2_snd_device, &snd_soc_z2);
	ret = platform_device_add(z2_snd_device);

	if (ret)
		platform_device_put(z2_snd_device);

	return ret;
}

static void __exit z2_exit(void)
{
	platform_device_unregister(z2_snd_device);
}

module_init(z2_init);
module_exit(z2_exit);

MODULE_AUTHOR("Ken McGuire <kenm@desertweyr.com>, "
		"Marek Vasut <marek.vasut@gmail.com>");
MODULE_DESCRIPTION("ALSA SoC ZipitZ2");
MODULE_LICENSE("GPL");
Commit	Line	Data
d21e0f4c MV	1	/*
	2	* linux/sound/soc/pxa/z2.c
	3	*
	4	* SoC Audio driver for Aeronix Zipit Z2
	5	*
	6	* Copyright (C) 2009 Ken McGuire <kenm@desertweyr.com>
	7	* Copyright (C) 2010 Marek Vasut <marek.vasut@gmail.com>
	8	*
	9	* This program is free software; you can redistribute it and/or modify
	10	* it under the terms of the GNU General Public License version 2 as
	11	* published by the Free Software Foundation.
	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 <linux/gpio.h>
	20
	21	#include <sound/core.h>
	22	#include <sound/pcm.h>
	23	#include <sound/soc.h>
d21e0f4c MV	24	#include <sound/jack.h>
	25
	26	#include <asm/mach-types.h>
	27	#include <mach/hardware.h>
	28	#include <mach/audio.h>
	29	#include <mach/z2.h>
	30
	31	#include "../codecs/wm8750.h"
d21e0f4c MV	32	#include "pxa2xx-i2s.h"
	33
	34	static struct snd_soc_card snd_soc_z2;
	35
	36	static int z2_hw_params(struct snd_pcm_substream *substream,
	37	struct snd_pcm_hw_params *params)
	38	{
	39	struct snd_soc_pcm_runtime *rtd = substream->private_data;
f0fba2ad LG	40	struct snd_soc_dai *codec_dai = rtd->codec_dai;
f0fba2ad LG	41	struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
d21e0f4c MV	42	unsigned int clk = 0;
	43	int ret = 0;
	44
	45	switch (params_rate(params)) {
	46	case 8000:
	47	case 16000:
	48	case 48000:
	49	case 96000:
	50	clk = 12288000;
	51	break;
	52	case 11025:
	53	case 22050:
	54	case 44100:
	55	clk = 11289600;
	56	break;
	57	}
	58
d21e0f4c MV	59	/* set the codec system clock for DAC and ADC */
	60	ret = snd_soc_dai_set_sysclk(codec_dai, WM8750_SYSCLK, clk,
	61	SND_SOC_CLOCK_IN);
	62	if (ret < 0)
	63	return ret;
	64
	65	/* set the I2S system clock as input (unused) */
	66	ret = snd_soc_dai_set_sysclk(cpu_dai, PXA2XX_I2S_SYSCLK, 0,
	67	SND_SOC_CLOCK_IN);
	68	if (ret < 0)
	69	return ret;
	70
	71	return 0;
	72	}
	73
	74	static struct snd_soc_jack hs_jack;
	75
	76	/* Headset jack detection DAPM pins */
	77	static struct snd_soc_jack_pin hs_jack_pins[] = {
	78	{
	79	.pin = "Mic Jack",
	80	.mask = SND_JACK_MICROPHONE,
	81	},
	82	{
	83	.pin = "Headphone Jack",
	84	.mask = SND_JACK_HEADPHONE,
	85	},
5f3822c4 VK	86	{
	87	.pin = "Ext Spk",
	88	.mask = SND_JACK_HEADPHONE,
	89	.invert = 1
	90	},
d21e0f4c MV	91	};
	92
	93	/* Headset jack detection gpios */
	94	static struct snd_soc_jack_gpio hs_jack_gpios[] = {
	95	{
	96	.gpio = GPIO37_ZIPITZ2_HEADSET_DETECT,
	97	.name = "hsdet-gpio",
	98	.report = SND_JACK_HEADSET,
	99	.debounce_time = 200,
7cbf7004	100	.invert = 1,
d21e0f4c MV	101	},
	102	};
	103
	104	/* z2 machine dapm widgets */
	105	static const struct snd_soc_dapm_widget wm8750_dapm_widgets[] = {
	106	SND_SOC_DAPM_HP("Headphone Jack", NULL),
	107	SND_SOC_DAPM_MIC("Mic Jack", NULL),
	108	SND_SOC_DAPM_SPK("Ext Spk", NULL),
	109
	110	/* headset is a mic and mono headphone */
	111	SND_SOC_DAPM_HP("Headset Jack", NULL),
	112	};
	113
	114	/* Z2 machine audio_map */
3c3f51f6	115	static const struct snd_soc_dapm_route z2_audio_map[] = {
d21e0f4c MV	116
	117	/* headphone connected to LOUT1, ROUT1 */
	118	{"Headphone Jack", NULL, "LOUT1"},
	119	{"Headphone Jack", NULL, "ROUT1"},
	120
	121	/* ext speaker connected to LOUT2, ROUT2 */
	122	{"Ext Spk", NULL , "ROUT2"},
	123	{"Ext Spk", NULL , "LOUT2"},
	124
	125	/* mic is connected to R input 2 - with bias */
	126	{"RINPUT2", NULL, "Mic Bias"},
	127	{"Mic Bias", NULL, "Mic Jack"},
	128	};
	129
	130	/*
	131	* Logic for a wm8750 as connected on a Z2 Device
	132	*/
f0fba2ad	133	static int z2_wm8750_init(struct snd_soc_pcm_runtime *rtd)
d21e0f4c	134	{
f0fba2ad	135	struct snd_soc_codec *codec = rtd->codec;
ce6120cc	136	struct snd_soc_dapm_context *dapm = &codec->dapm;
d21e0f4c MV	137	int ret;
	138
	139	/* NC codec pins */
ce6120cc LG	140	snd_soc_dapm_disable_pin(dapm, "LINPUT3");
	141	snd_soc_dapm_disable_pin(dapm, "RINPUT3");
	142	snd_soc_dapm_disable_pin(dapm, "OUT3");
64c25a92	143	snd_soc_dapm_disable_pin(dapm, "MONO1");
d21e0f4c	144
d21e0f4c	145	/* Jack detection API stuff */
d30d141f LPC	146	ret = snd_soc_card_jack_new(rtd->card, "Headset Jack", SND_JACK_HEADSET,
	147	&hs_jack, hs_jack_pins,
	148	ARRAY_SIZE(hs_jack_pins));
d21e0f4c MV	149	if (ret)
	150	goto err;
	151
	152	ret = snd_soc_jack_add_gpios(&hs_jack, ARRAY_SIZE(hs_jack_gpios),
	153	hs_jack_gpios);
	154	if (ret)
	155	goto err;
	156
	157	return 0;
	158
	159	err:
	160	return ret;
	161	}
	162
	163	static struct snd_soc_ops z2_ops = {
	164	.hw_params = z2_hw_params,
	165	};
	166
	167	/* z2 digital audio interface glue - connects codec <--> CPU */
	168	static struct snd_soc_dai_link z2_dai = {
	169	.name = "wm8750",
	170	.stream_name = "WM8750",
a2a0086d	171	.cpu_dai_name = "pxa2xx-i2s",
f0fba2ad LG	172	.codec_dai_name = "wm8750-hifi",
f0fba2ad LG	173	.platform_name = "pxa-pcm-audio",
dc5de62b	174	.codec_name = "wm8750.0-001b",
d21e0f4c	175	.init = z2_wm8750_init,
36c1b400 AL	176	.dai_fmt = SND_SOC_DAIFMT_I2S \| SND_SOC_DAIFMT_NB_NF \|
36c1b400 AL	177	SND_SOC_DAIFMT_CBS_CFS,
d21e0f4c MV	178	.ops = &z2_ops,
	179	};
	180
	181	/* z2 audio machine driver */
	182	static struct snd_soc_card snd_soc_z2 = {
	183	.name = "Z2",
561c6a17	184	.owner = THIS_MODULE,
d21e0f4c MV	185	.dai_link = &z2_dai,
d21e0f4c MV	186	.num_links = 1,
3c3f51f6 AL	187
	188	.dapm_widgets = wm8750_dapm_widgets,
	189	.num_dapm_widgets = ARRAY_SIZE(wm8750_dapm_widgets),
	190	.dapm_routes = z2_audio_map,
	191	.num_dapm_routes = ARRAY_SIZE(z2_audio_map),
d21e0f4c MV	192	};
d21e0f4c MV	193
d21e0f4c MV	194	static struct platform_device *z2_snd_device;
	195
	196	static int __init z2_init(void)
	197	{
	198	int ret;
	199
	200	if (!machine_is_zipit2())
	201	return -ENODEV;
	202
	203	z2_snd_device = platform_device_alloc("soc-audio", -1);
	204	if (!z2_snd_device)
	205	return -ENOMEM;
	206
f0fba2ad	207	platform_set_drvdata(z2_snd_device, &snd_soc_z2);
d21e0f4c MV	208	ret = platform_device_add(z2_snd_device);
	209
	210	if (ret)
	211	platform_device_put(z2_snd_device);
	212
	213	return ret;
	214	}
	215
	216	static void __exit z2_exit(void)
	217	{
	218	platform_device_unregister(z2_snd_device);
	219	}
	220
	221	module_init(z2_init);
	222	module_exit(z2_exit);
	223
	224	MODULE_AUTHOR("Ken McGuire <kenm@desertweyr.com>, "
	225	"Marek Vasut <marek.vasut@gmail.com>");
	226	MODULE_DESCRIPTION("ALSA SoC ZipitZ2");
	227	MODULE_LICENSE("GPL");