[mirror_ubuntu-zesty-kernel.git] / sound / soc / samsung / h1940_uda1380.c

/*
 * h1940-uda1380.c  --  ALSA Soc Audio Layer
 *
 * Copyright (c) 2010 Arnaud Patard <arnaud.patard@rtp-net.org>
 * Copyright (c) 2010 Vasily Khoruzhick <anarsoul@gmail.com>
 *
 * Based on version from Arnaud Patard <arnaud.patard@rtp-net.org>
 *
 * 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/types.h>
#include <linux/gpio.h>
#include <linux/module.h>

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

#include "regs-iis.h"
#include <asm/mach-types.h>

#include <mach/gpio-samsung.h>
#include "s3c24xx-i2s.h"

static const unsigned int rates[] = {
	11025,
	22050,
	44100,
};

static const struct snd_pcm_hw_constraint_list hw_rates = {
	.count = ARRAY_SIZE(rates),
	.list = rates,
};

static struct snd_soc_jack hp_jack;

static struct snd_soc_jack_pin hp_jack_pins[] = {
	{
		.pin	= "Headphone Jack",
		.mask	= SND_JACK_HEADPHONE,
	},
	{
		.pin	= "Speaker",
		.mask	= SND_JACK_HEADPHONE,
		.invert	= 1,
	},
};

static struct snd_soc_jack_gpio hp_jack_gpios[] = {
	{
		.gpio			= S3C2410_GPG(4),
		.name			= "hp-gpio",
		.report			= SND_JACK_HEADPHONE,
		.invert			= 1,
		.debounce_time		= 200,
	},
};

static int h1940_startup(struct snd_pcm_substream *substream)
{
	struct snd_pcm_runtime *runtime = substream->runtime;

	return snd_pcm_hw_constraint_list(runtime, 0,
					SNDRV_PCM_HW_PARAM_RATE,
					&hw_rates);
}

static int h1940_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 *cpu_dai = rtd->cpu_dai;
	int div;
	int ret;
	unsigned int rate = params_rate(params);

	switch (rate) {
	case 11025:
	case 22050:
	case 44100:
		div = s3c24xx_i2s_get_clockrate() / (384 * rate);
		if (s3c24xx_i2s_get_clockrate() % (384 * rate) > (192 * rate))
			div++;
		break;
	default:
		dev_err(rtd->dev, "%s: rate %d is not supported\n",
			__func__, rate);
		return -EINVAL;
	}

	/* select clock source */
	ret = snd_soc_dai_set_sysclk(cpu_dai, S3C24XX_CLKSRC_PCLK, rate,
			SND_SOC_CLOCK_OUT);
	if (ret < 0)
		return ret;

	/* set MCLK division for sample rate */
	ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C24XX_DIV_MCLK,
		S3C2410_IISMOD_384FS);
	if (ret < 0)
		return ret;

	/* set BCLK division for sample rate */
	ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C24XX_DIV_BCLK,
		S3C2410_IISMOD_32FS);
	if (ret < 0)
		return ret;

	/* set prescaler division for sample rate */
	ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C24XX_DIV_PRESCALER,
		S3C24XX_PRESCALE(div, div));
	if (ret < 0)
		return ret;

	return 0;
}

static struct snd_soc_ops h1940_ops = {
	.startup	= h1940_startup,
	.hw_params	= h1940_hw_params,
};

static int h1940_spk_power(struct snd_soc_dapm_widget *w,
				struct snd_kcontrol *kcontrol, int event)
{
	if (SND_SOC_DAPM_EVENT_ON(event))
		gpio_set_value(S3C_GPIO_END + 9, 1);
	else
		gpio_set_value(S3C_GPIO_END + 9, 0);

	return 0;
}

/* h1940 machine dapm widgets */
static const struct snd_soc_dapm_widget uda1380_dapm_widgets[] = {
	SND_SOC_DAPM_HP("Headphone Jack", NULL),
	SND_SOC_DAPM_MIC("Mic Jack", NULL),
	SND_SOC_DAPM_SPK("Speaker", h1940_spk_power),
};

/* h1940 machine audio_map */
static const struct snd_soc_dapm_route audio_map[] = {
	/* headphone connected to VOUTLHP, VOUTRHP */
	{"Headphone Jack", NULL, "VOUTLHP"},
	{"Headphone Jack", NULL, "VOUTRHP"},

	/* ext speaker connected to VOUTL, VOUTR  */
	{"Speaker", NULL, "VOUTL"},
	{"Speaker", NULL, "VOUTR"},

	/* mic is connected to VINM */
	{"VINM", NULL, "Mic Jack"},
};

static struct platform_device *s3c24xx_snd_device;

static int h1940_uda1380_init(struct snd_soc_pcm_runtime *rtd)
{
	snd_soc_card_jack_new(rtd->card, "Headphone Jack", SND_JACK_HEADPHONE,
		&hp_jack, hp_jack_pins, ARRAY_SIZE(hp_jack_pins));

	snd_soc_jack_add_gpios(&hp_jack, ARRAY_SIZE(hp_jack_gpios),
		hp_jack_gpios);

	return 0;
}

static int h1940_uda1380_card_remove(struct snd_soc_card *card)
{
	snd_soc_jack_free_gpios(&hp_jack, ARRAY_SIZE(hp_jack_gpios),
		hp_jack_gpios);

	return 0;
}

/* s3c24xx digital audio interface glue - connects codec <--> CPU */
static struct snd_soc_dai_link h1940_uda1380_dai[] = {
	{
		.name		= "uda1380",
		.stream_name	= "UDA1380 Duplex",
		.cpu_dai_name	= "s3c24xx-iis",
		.codec_dai_name	= "uda1380-hifi",
		.init		= h1940_uda1380_init,
		.platform_name	= "s3c24xx-iis",
		.codec_name	= "uda1380-codec.0-001a",
		.dai_fmt	= SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
				  SND_SOC_DAIFMT_CBS_CFS,
		.ops		= &h1940_ops,
	},
};

static struct snd_soc_card h1940_asoc = {
	.name = "h1940",
	.owner = THIS_MODULE,
	.remove = h1940_uda1380_card_remove,
	.dai_link = h1940_uda1380_dai,
	.num_links = ARRAY_SIZE(h1940_uda1380_dai),

	.dapm_widgets = uda1380_dapm_widgets,
	.num_dapm_widgets = ARRAY_SIZE(uda1380_dapm_widgets),
	.dapm_routes = audio_map,
	.num_dapm_routes = ARRAY_SIZE(audio_map),
};

static int __init h1940_init(void)
{
	int ret;

	if (!machine_is_h1940())
		return -ENODEV;

	/* configure some gpios */
	ret = gpio_request(S3C_GPIO_END + 9, "speaker-power");
	if (ret)
		goto err_out;

	ret = gpio_direction_output(S3C_GPIO_END + 9, 0);
	if (ret)
		goto err_gpio;

	s3c24xx_snd_device = platform_device_alloc("soc-audio", -1);
	if (!s3c24xx_snd_device) {
		ret = -ENOMEM;
		goto err_gpio;
	}

	platform_set_drvdata(s3c24xx_snd_device, &h1940_asoc);
	ret = platform_device_add(s3c24xx_snd_device);

	if (ret)
		goto err_plat;

	return 0;

err_plat:
	platform_device_put(s3c24xx_snd_device);
err_gpio:
	gpio_free(S3C_GPIO_END + 9);

err_out:
	return ret;
}

static void __exit h1940_exit(void)
{
	platform_device_unregister(s3c24xx_snd_device);
	gpio_free(S3C_GPIO_END + 9);
}

module_init(h1940_init);
module_exit(h1940_exit);

/* Module information */
MODULE_AUTHOR("Arnaud Patard, Vasily Khoruzhick");
MODULE_DESCRIPTION("ALSA SoC H1940");
MODULE_LICENSE("GPL");
Commit	Line	Data
1957668b VK	1	/*
	2	* h1940-uda1380.c -- ALSA Soc Audio Layer
	3	*
	4	* Copyright (c) 2010 Arnaud Patard <arnaud.patard@rtp-net.org>
	5	* Copyright (c) 2010 Vasily Khoruzhick <anarsoul@gmail.com>
	6	*
	7	* Based on version from Arnaud Patard <arnaud.patard@rtp-net.org>
	8	*
	9	* This program is free software; you can redistribute it and/or modify it
	10	* under the terms of the GNU General Public License as published by the
	11	* Free Software Foundation; either version 2 of the License, or (at your
	12	* option) any later version.
	13	*
	14	*/
	15
fd049755	16	#include <linux/types.h>
1957668b	17	#include <linux/gpio.h>
da155d5b	18	#include <linux/module.h>
1957668b VK	19
1957668b VK	20	#include <sound/soc.h>
1957668b VK	21	#include <sound/jack.h>
1957668b VK	22
5d229ce5	23	#include "regs-iis.h"
1957668b VK	24	#include <asm/mach-types.h>
1957668b VK	25
abffae64	26	#include <mach/gpio-samsung.h>
1957668b	27	#include "s3c24xx-i2s.h"
1957668b	28
de687fb1	29	static const unsigned int rates[] = {
1957668b VK	30	11025,
	31	22050,
	32	44100,
	33	};
	34
de687fb1	35	static const struct snd_pcm_hw_constraint_list hw_rates = {
1957668b VK	36	.count = ARRAY_SIZE(rates),
1957668b VK	37	.list = rates,
1957668b VK	38	};
	39
	40	static struct snd_soc_jack hp_jack;
	41
	42	static struct snd_soc_jack_pin hp_jack_pins[] = {
	43	{
	44	.pin = "Headphone Jack",
	45	.mask = SND_JACK_HEADPHONE,
	46	},
	47	{
	48	.pin = "Speaker",
	49	.mask = SND_JACK_HEADPHONE,
	50	.invert = 1,
	51	},
	52	};
	53
	54	static struct snd_soc_jack_gpio hp_jack_gpios[] = {
	55	{
	56	.gpio = S3C2410_GPG(4),
	57	.name = "hp-gpio",
	58	.report = SND_JACK_HEADPHONE,
	59	.invert = 1,
	60	.debounce_time = 200,
	61	},
	62	};
	63
	64	static int h1940_startup(struct snd_pcm_substream *substream)
	65	{
	66	struct snd_pcm_runtime *runtime = substream->runtime;
	67
1957668b VK	68	return snd_pcm_hw_constraint_list(runtime, 0,
	69	SNDRV_PCM_HW_PARAM_RATE,
	70	&hw_rates);
	71	}
	72
	73	static int h1940_hw_params(struct snd_pcm_substream *substream,
	74	struct snd_pcm_hw_params *params)
	75	{
	76	struct snd_soc_pcm_runtime *rtd = substream->private_data;
	77	struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
1957668b VK	78	int div;
	79	int ret;
	80	unsigned int rate = params_rate(params);
	81
	82	switch (rate) {
	83	case 11025:
	84	case 22050:
	85	case 44100:
	86	div = s3c24xx_i2s_get_clockrate() / (384 * rate);
	87	if (s3c24xx_i2s_get_clockrate() % (384 * rate) > (192 * rate))
	88	div++;
	89	break;
	90	default:
2046d453	91	dev_err(rtd->dev, "%s: rate %d is not supported\n",
1957668b VK	92	__func__, rate);
	93	return -EINVAL;
	94	}
	95
1957668b VK	96	/* select clock source */
	97	ret = snd_soc_dai_set_sysclk(cpu_dai, S3C24XX_CLKSRC_PCLK, rate,
	98	SND_SOC_CLOCK_OUT);
	99	if (ret < 0)
	100	return ret;
	101
	102	/* set MCLK division for sample rate */
	103	ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C24XX_DIV_MCLK,
	104	S3C2410_IISMOD_384FS);
	105	if (ret < 0)
	106	return ret;
	107
	108	/* set BCLK division for sample rate */
	109	ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C24XX_DIV_BCLK,
	110	S3C2410_IISMOD_32FS);
	111	if (ret < 0)
	112	return ret;
	113
	114	/* set prescaler division for sample rate */
	115	ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C24XX_DIV_PRESCALER,
	116	S3C24XX_PRESCALE(div, div));
	117	if (ret < 0)
	118	return ret;
	119
	120	return 0;
	121	}
	122
	123	static struct snd_soc_ops h1940_ops = {
	124	.startup = h1940_startup,
	125	.hw_params = h1940_hw_params,
	126	};
	127
	128	static int h1940_spk_power(struct snd_soc_dapm_widget *w,
	129	struct snd_kcontrol *kcontrol, int event)
	130	{
	131	if (SND_SOC_DAPM_EVENT_ON(event))
232910d6	132	gpio_set_value(S3C_GPIO_END + 9, 1);
1957668b	133	else
232910d6	134	gpio_set_value(S3C_GPIO_END + 9, 0);
1957668b VK	135
	136	return 0;
	137	}
	138
	139	/* h1940 machine dapm widgets */
	140	static const struct snd_soc_dapm_widget uda1380_dapm_widgets[] = {
	141	SND_SOC_DAPM_HP("Headphone Jack", NULL),
	142	SND_SOC_DAPM_MIC("Mic Jack", NULL),
	143	SND_SOC_DAPM_SPK("Speaker", h1940_spk_power),
	144	};
	145
	146	/* h1940 machine audio_map */
	147	static const struct snd_soc_dapm_route audio_map[] = {
	148	/* headphone connected to VOUTLHP, VOUTRHP */
	149	{"Headphone Jack", NULL, "VOUTLHP"},
	150	{"Headphone Jack", NULL, "VOUTRHP"},
	151
	152	/* ext speaker connected to VOUTL, VOUTR */
	153	{"Speaker", NULL, "VOUTL"},
	154	{"Speaker", NULL, "VOUTR"},
	155
	156	/* mic is connected to VINM */
	157	{"VINM", NULL, "Mic Jack"},
	158	};
	159
	160	static struct platform_device *s3c24xx_snd_device;
	161
	162	static int h1940_uda1380_init(struct snd_soc_pcm_runtime *rtd)
	163	{
dfe11f28 LPC	164	snd_soc_card_jack_new(rtd->card, "Headphone Jack", SND_JACK_HEADPHONE,
dfe11f28 LPC	165	&hp_jack, hp_jack_pins, ARRAY_SIZE(hp_jack_pins));
1957668b VK	166
	167	snd_soc_jack_add_gpios(&hp_jack, ARRAY_SIZE(hp_jack_gpios),
	168	hp_jack_gpios);
	169
	170	return 0;
	171	}
	172
16088cb6	173	static int h1940_uda1380_card_remove(struct snd_soc_card *card)
e1d4d3c8 SW	174	{
	175	snd_soc_jack_free_gpios(&hp_jack, ARRAY_SIZE(hp_jack_gpios),
	176	hp_jack_gpios);
	177
	178	return 0;
	179	}
	180
1957668b VK	181	/* s3c24xx digital audio interface glue - connects codec <--> CPU */
	182	static struct snd_soc_dai_link h1940_uda1380_dai[] = {
	183	{
	184	.name = "uda1380",
	185	.stream_name = "UDA1380 Duplex",
	186	.cpu_dai_name = "s3c24xx-iis",
	187	.codec_dai_name = "uda1380-hifi",
	188	.init = h1940_uda1380_init,
a08485d8	189	.platform_name = "s3c24xx-iis",
1957668b	190	.codec_name = "uda1380-codec.0-001a",
5cc10b9b LPC	191	.dai_fmt = SND_SOC_DAIFMT_I2S \| SND_SOC_DAIFMT_NB_NF \|
5cc10b9b LPC	192	SND_SOC_DAIFMT_CBS_CFS,
1957668b VK	193	.ops = &h1940_ops,
	194	},
	195	};
	196
	197	static struct snd_soc_card h1940_asoc = {
	198	.name = "h1940",
095d79dc	199	.owner = THIS_MODULE,
e1d4d3c8	200	.remove = h1940_uda1380_card_remove,
1957668b VK	201	.dai_link = h1940_uda1380_dai,
1957668b VK	202	.num_links = ARRAY_SIZE(h1940_uda1380_dai),
6119d016 MB	203
	204	.dapm_widgets = uda1380_dapm_widgets,
	205	.num_dapm_widgets = ARRAY_SIZE(uda1380_dapm_widgets),
	206	.dapm_routes = audio_map,
	207	.num_dapm_routes = ARRAY_SIZE(audio_map),
1957668b VK	208	};
	209
	210	static int __init h1940_init(void)
	211	{
	212	int ret;
	213
	214	if (!machine_is_h1940())
	215	return -ENODEV;
	216
	217	/* configure some gpios */
232910d6	218	ret = gpio_request(S3C_GPIO_END + 9, "speaker-power");
1957668b VK	219	if (ret)
	220	goto err_out;
	221
232910d6	222	ret = gpio_direction_output(S3C_GPIO_END + 9, 0);
1957668b VK	223	if (ret)
	224	goto err_gpio;
	225
	226	s3c24xx_snd_device = platform_device_alloc("soc-audio", -1);
	227	if (!s3c24xx_snd_device) {
	228	ret = -ENOMEM;
	229	goto err_gpio;
	230	}
	231
	232	platform_set_drvdata(s3c24xx_snd_device, &h1940_asoc);
	233	ret = platform_device_add(s3c24xx_snd_device);
	234
	235	if (ret)
	236	goto err_plat;
	237
	238	return 0;
	239
	240	err_plat:
	241	platform_device_put(s3c24xx_snd_device);
	242	err_gpio:
232910d6	243	gpio_free(S3C_GPIO_END + 9);
1957668b VK	244
	245	err_out:
	246	return ret;
	247	}
	248
	249	static void __exit h1940_exit(void)
	250	{
	251	platform_device_unregister(s3c24xx_snd_device);
232910d6	252	gpio_free(S3C_GPIO_END + 9);
1957668b VK	253	}
	254
	255	module_init(h1940_init);
	256	module_exit(h1940_exit);
	257
	258	/* Module information */
	259	MODULE_AUTHOR("Arnaud Patard, Vasily Khoruzhick");
	260	MODULE_DESCRIPTION("ALSA SoC H1940");
	261	MODULE_LICENSE("GPL");