[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 codec DAI configuration */
	ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S |
		SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS);
	if (ret < 0)
		return ret;

	/* set cpu DAI configuration */
	ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S |
		SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS);
	if (ret < 0)
		return ret;

	/* 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 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");

	/* Add z2 specific widgets */
	snd_soc_dapm_new_controls(dapm, wm8750_dapm_widgets,
				 ARRAY_SIZE(wm8750_dapm_widgets));

	/* Set up z2 specific audio paths */
	snd_soc_dapm_add_routes(dapm, audio_map, ARRAY_SIZE(audio_map));

	/* Jack detection API stuff */
	ret = snd_soc_jack_new(codec, "Headset Jack", SND_JACK_HEADSET,
				&hs_jack);
	if (ret)
		goto err;

	ret = snd_soc_jack_add_pins(&hs_jack, ARRAY_SIZE(hs_jack_pins),
				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,
	.ops		= &z2_ops,
};

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

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
	59	/* set codec DAI configuration */
	60	ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S \|
	61	SND_SOC_DAIFMT_NB_NF \| SND_SOC_DAIFMT_CBS_CFS);
	62	if (ret < 0)
	63	return ret;
	64
	65	/* set cpu DAI configuration */
	66	ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S \|
	67	SND_SOC_DAIFMT_NB_NF \| SND_SOC_DAIFMT_CBS_CFS);
	68	if (ret < 0)
	69	return ret;
	70
	71	/* set the codec system clock for DAC and ADC */
	72	ret = snd_soc_dai_set_sysclk(codec_dai, WM8750_SYSCLK, clk,
	73	SND_SOC_CLOCK_IN);
	74	if (ret < 0)
	75	return ret;
	76
	77	/* set the I2S system clock as input (unused) */
	78	ret = snd_soc_dai_set_sysclk(cpu_dai, PXA2XX_I2S_SYSCLK, 0,
	79	SND_SOC_CLOCK_IN);
	80	if (ret < 0)
	81	return ret;
	82
	83	return 0;
	84	}
	85
	86	static struct snd_soc_jack hs_jack;
	87
	88	/* Headset jack detection DAPM pins */
	89	static struct snd_soc_jack_pin hs_jack_pins[] = {
	90	{
	91	.pin = "Mic Jack",
	92	.mask = SND_JACK_MICROPHONE,
	93	},
	94	{
	95	.pin = "Headphone Jack",
	96	.mask = SND_JACK_HEADPHONE,
	97	},
5f3822c4 VK	98	{
	99	.pin = "Ext Spk",
	100	.mask = SND_JACK_HEADPHONE,
	101	.invert = 1
	102	},
d21e0f4c MV	103	};
	104
	105	/* Headset jack detection gpios */
	106	static struct snd_soc_jack_gpio hs_jack_gpios[] = {
	107	{
	108	.gpio = GPIO37_ZIPITZ2_HEADSET_DETECT,
	109	.name = "hsdet-gpio",
	110	.report = SND_JACK_HEADSET,
	111	.debounce_time = 200,
7cbf7004	112	.invert = 1,
d21e0f4c MV	113	},
	114	};
	115
	116	/* z2 machine dapm widgets */
	117	static const struct snd_soc_dapm_widget wm8750_dapm_widgets[] = {
	118	SND_SOC_DAPM_HP("Headphone Jack", NULL),
	119	SND_SOC_DAPM_MIC("Mic Jack", NULL),
	120	SND_SOC_DAPM_SPK("Ext Spk", NULL),
	121
	122	/* headset is a mic and mono headphone */
	123	SND_SOC_DAPM_HP("Headset Jack", NULL),
	124	};
	125
	126	/* Z2 machine audio_map */
	127	static const struct snd_soc_dapm_route audio_map[] = {
	128
	129	/* headphone connected to LOUT1, ROUT1 */
	130	{"Headphone Jack", NULL, "LOUT1"},
	131	{"Headphone Jack", NULL, "ROUT1"},
	132
	133	/* ext speaker connected to LOUT2, ROUT2 */
	134	{"Ext Spk", NULL , "ROUT2"},
	135	{"Ext Spk", NULL , "LOUT2"},
	136
	137	/* mic is connected to R input 2 - with bias */
	138	{"RINPUT2", NULL, "Mic Bias"},
	139	{"Mic Bias", NULL, "Mic Jack"},
	140	};
	141
	142	/*
	143	* Logic for a wm8750 as connected on a Z2 Device
	144	*/
f0fba2ad	145	static int z2_wm8750_init(struct snd_soc_pcm_runtime *rtd)
d21e0f4c	146	{
f0fba2ad	147	struct snd_soc_codec *codec = rtd->codec;
ce6120cc	148	struct snd_soc_dapm_context *dapm = &codec->dapm;
d21e0f4c MV	149	int ret;
	150
	151	/* NC codec pins */
ce6120cc LG	152	snd_soc_dapm_disable_pin(dapm, "LINPUT3");
	153	snd_soc_dapm_disable_pin(dapm, "RINPUT3");
	154	snd_soc_dapm_disable_pin(dapm, "OUT3");
64c25a92	155	snd_soc_dapm_disable_pin(dapm, "MONO1");
d21e0f4c MV	156
d21e0f4c MV	157	/* Add z2 specific widgets */
ce6120cc	158	snd_soc_dapm_new_controls(dapm, wm8750_dapm_widgets,
d21e0f4c MV	159	ARRAY_SIZE(wm8750_dapm_widgets));
	160
	161	/* Set up z2 specific audio paths */
ce6120cc	162	snd_soc_dapm_add_routes(dapm, audio_map, ARRAY_SIZE(audio_map));
d21e0f4c	163
d21e0f4c	164	/* Jack detection API stuff */
f0fba2ad	165	ret = snd_soc_jack_new(codec, "Headset Jack", SND_JACK_HEADSET,
d21e0f4c MV	166	&hs_jack);
	167	if (ret)
	168	goto err;
	169
	170	ret = snd_soc_jack_add_pins(&hs_jack, ARRAY_SIZE(hs_jack_pins),
	171	hs_jack_pins);
	172	if (ret)
	173	goto err;
	174
	175	ret = snd_soc_jack_add_gpios(&hs_jack, ARRAY_SIZE(hs_jack_gpios),
	176	hs_jack_gpios);
	177	if (ret)
	178	goto err;
	179
	180	return 0;
	181
	182	err:
	183	return ret;
	184	}
	185
	186	static struct snd_soc_ops z2_ops = {
	187	.hw_params = z2_hw_params,
	188	};
	189
	190	/* z2 digital audio interface glue - connects codec <--> CPU */
	191	static struct snd_soc_dai_link z2_dai = {
	192	.name = "wm8750",
	193	.stream_name = "WM8750",
a2a0086d	194	.cpu_dai_name = "pxa2xx-i2s",
f0fba2ad LG	195	.codec_dai_name = "wm8750-hifi",
f0fba2ad LG	196	.platform_name = "pxa-pcm-audio",
dc5de62b	197	.codec_name = "wm8750.0-001b",
d21e0f4c MV	198	.init = z2_wm8750_init,
	199	.ops = &z2_ops,
	200	};
	201
	202	/* z2 audio machine driver */
	203	static struct snd_soc_card snd_soc_z2 = {
	204	.name = "Z2",
d21e0f4c MV	205	.dai_link = &z2_dai,
	206	.num_links = 1,
	207	};
	208
d21e0f4c MV	209	static struct platform_device *z2_snd_device;
	210
	211	static int __init z2_init(void)
	212	{
	213	int ret;
	214
	215	if (!machine_is_zipit2())
	216	return -ENODEV;
	217
	218	z2_snd_device = platform_device_alloc("soc-audio", -1);
	219	if (!z2_snd_device)
	220	return -ENOMEM;
	221
f0fba2ad	222	platform_set_drvdata(z2_snd_device, &snd_soc_z2);
d21e0f4c MV	223	ret = platform_device_add(z2_snd_device);
	224
	225	if (ret)
	226	platform_device_put(z2_snd_device);
	227
	228	return ret;
	229	}
	230
	231	static void __exit z2_exit(void)
	232	{
	233	platform_device_unregister(z2_snd_device);
	234	}
	235
	236	module_init(z2_init);
	237	module_exit(z2_exit);
	238
	239	MODULE_AUTHOR("Ken McGuire <kenm@desertweyr.com>, "
	240	"Marek Vasut <marek.vasut@gmail.com>");
	241	MODULE_DESCRIPTION("ALSA SoC ZipitZ2");
	242	MODULE_LICENSE("GPL");