[deliverable/linux.git] / sound / soc / samsung / rx1950_uda1380.c

/*
 * rx1950.c  --  ALSA Soc Audio Layer
 *
 * Copyright (c) 2010 Vasily Khoruzhick <anarsoul@gmail.com>
 *
 * Based on smdk2440.c and magician.c
 *
 * Authors: Graeme Gregory graeme.gregory@wolfsonmicro.com
 *          Philipp Zabel <philipp.zabel@gmail.com>
 *          Denis Grigoriev <dgreenday@gmail.com>
 *          Vasily Khoruzhick <anarsoul@gmail.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/types.h>
#include <linux/gpio.h>
#include <linux/module.h>

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

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

#include "s3c24xx-i2s.h"

static int rx1950_uda1380_init(struct snd_soc_pcm_runtime *rtd);
static int rx1950_startup(struct snd_pcm_substream *substream);
static int rx1950_hw_params(struct snd_pcm_substream *substream,
				struct snd_pcm_hw_params *params);
static int rx1950_spk_power(struct snd_soc_dapm_widget *w,
				struct snd_kcontrol *kcontrol, int event);

static unsigned int rates[] = {
	16000,
	44100,
	48000,
};

static struct snd_pcm_hw_constraint_list hw_rates = {
	.count = ARRAY_SIZE(rates),
	.list = rates,
	.mask = 0,
};

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[] = {
	[0] = {
		.gpio			= S3C2410_GPG(12),
		.name			= "hp-gpio",
		.report			= SND_JACK_HEADPHONE,
		.invert			= 1,
		.debounce_time		= 200,
	},
};

static struct snd_soc_ops rx1950_ops = {
	.startup	= rx1950_startup,
	.hw_params	= rx1950_hw_params,
};

/* s3c24xx digital audio interface glue - connects codec <--> CPU */
static struct snd_soc_dai_link rx1950_uda1380_dai[] = {
	{
		.name		= "uda1380",
		.stream_name	= "UDA1380 Duplex",
		.cpu_dai_name	= "s3c24xx-iis",
		.codec_dai_name	= "uda1380-hifi",
		.init		= rx1950_uda1380_init,
		.platform_name	= "s3c24xx-iis",
		.codec_name	= "uda1380-codec.0-001a",
		.ops		= &rx1950_ops,
	},
};

/* rx1950 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", rx1950_spk_power),
};

/* rx1950 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 snd_soc_card rx1950_asoc = {
	.name = "rx1950",
	.owner = THIS_MODULE,
	.dai_link = rx1950_uda1380_dai,
	.num_links = ARRAY_SIZE(rx1950_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 struct platform_device *s3c24xx_snd_device;

static int rx1950_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 rx1950_spk_power(struct snd_soc_dapm_widget *w,
				struct snd_kcontrol *kcontrol, int event)
{
	if (SND_SOC_DAPM_EVENT_ON(event))
		gpio_set_value(S3C2410_GPA(1), 1);
	else
		gpio_set_value(S3C2410_GPA(1), 0);

	return 0;
}

static int rx1950_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;
	struct snd_soc_dai *codec_dai = rtd->codec_dai;
	int div;
	int ret;
	unsigned int rate = params_rate(params);
	int clk_source, fs_mode;

	switch (rate) {
	case 16000:
	case 48000:
		clk_source = S3C24XX_CLKSRC_PCLK;
		fs_mode = S3C2410_IISMOD_256FS;
		div = s3c24xx_i2s_get_clockrate() / (256 * rate);
		if (s3c24xx_i2s_get_clockrate() % (256 * rate) > (128 * rate))
			div++;
		break;
	case 44100:
	case 88200:
		clk_source = S3C24XX_CLKSRC_MPLL;
		fs_mode = S3C2410_IISMOD_384FS;
		div = 1;
		break;
	default:
		printk(KERN_ERR "%s: rate %d is not supported\n",
			__func__, rate);
		return -EINVAL;
	}

	/* 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;

	/* select clock source */
	ret = snd_soc_dai_set_sysclk(cpu_dai, clk_source, 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,
		fs_mode);
	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 int rx1950_uda1380_init(struct snd_soc_pcm_runtime *rtd)
{
	struct snd_soc_codec *codec = rtd->codec;
	struct snd_soc_dapm_context *dapm = &codec->dapm;

	snd_soc_dapm_enable_pin(dapm, "Headphone Jack");
	snd_soc_dapm_enable_pin(dapm, "Speaker");
	snd_soc_dapm_enable_pin(dapm, "Mic Jack");

	snd_soc_jack_new(codec, "Headphone Jack", SND_JACK_HEADPHONE,
		&hp_jack);

	snd_soc_jack_add_pins(&hp_jack, ARRAY_SIZE(hp_jack_pins),
		hp_jack_pins);

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

	return 0;
}

static int __init rx1950_init(void)
{
	int ret;

	if (!machine_is_rx1950())
		return -ENODEV;

	/* configure some gpios */
	ret = gpio_request(S3C2410_GPA(1), "speaker-power");
	if (ret)
		goto err_gpio;

	ret = gpio_direction_output(S3C2410_GPA(1), 0);
	if (ret)
		goto err_gpio_conf;

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

	platform_set_drvdata(s3c24xx_snd_device, &rx1950_asoc);
	ret = platform_device_add(s3c24xx_snd_device);

	if (ret) {
		platform_device_put(s3c24xx_snd_device);
		goto err_plat_add;
	}

	return 0;

err_plat_add:
err_plat_alloc:
err_gpio_conf:
	gpio_free(S3C2410_GPA(1));

err_gpio:
	return ret;
}

static void __exit rx1950_exit(void)
{
	platform_device_unregister(s3c24xx_snd_device);
	snd_soc_jack_free_gpios(&hp_jack, ARRAY_SIZE(hp_jack_gpios),
		hp_jack_gpios);
	gpio_free(S3C2410_GPA(1));
}

module_init(rx1950_init);
module_exit(rx1950_exit);

/* Module information */
MODULE_AUTHOR("Vasily Khoruzhick");
MODULE_DESCRIPTION("ALSA SoC RX1950");
MODULE_LICENSE("GPL");
Commit	Line	Data
81d97802 VK	1	/*
	2	* rx1950.c -- ALSA Soc Audio Layer
	3	*
	4	* Copyright (c) 2010 Vasily Khoruzhick <anarsoul@gmail.com>
	5	*
	6	* Based on smdk2440.c and magician.c
	7	*
	8	* Authors: Graeme Gregory graeme.gregory@wolfsonmicro.com
	9	* Philipp Zabel <philipp.zabel@gmail.com>
	10	* Denis Grigoriev <dgreenday@gmail.com>
	11	* Vasily Khoruzhick <anarsoul@gmail.com>
	12	*
	13	* This program is free software; you can redistribute it and/or modify it
	14	* under the terms of the GNU General Public License as published by the
	15	* Free Software Foundation; either version 2 of the License, or (at your
	16	* option) any later version.
	17	*
	18	*/
	19
b8487928	20	#include <linux/types.h>
81d97802	21	#include <linux/gpio.h>
da155d5b	22	#include <linux/module.h>
81d97802	23
81d97802	24	#include <sound/soc.h>
81d97802 VK	25	#include <sound/jack.h>
81d97802 VK	26
abffae64	27	#include <mach/gpio-samsung.h>
5d229ce5	28	#include "regs-iis.h"
dedc3cf5 VK	29	#include <asm/mach-types.h>
dedc3cf5 VK	30
81d97802	31	#include "s3c24xx-i2s.h"
81d97802 VK	32
	33	static int rx1950_uda1380_init(struct snd_soc_pcm_runtime *rtd);
	34	static int rx1950_startup(struct snd_pcm_substream *substream);
	35	static int rx1950_hw_params(struct snd_pcm_substream *substream,
	36	struct snd_pcm_hw_params *params);
	37	static int rx1950_spk_power(struct snd_soc_dapm_widget *w,
	38	struct snd_kcontrol *kcontrol, int event);
	39
	40	static unsigned int rates[] = {
	41	16000,
	42	44100,
	43	48000,
81d97802 VK	44	};
	45
	46	static struct snd_pcm_hw_constraint_list hw_rates = {
	47	.count = ARRAY_SIZE(rates),
	48	.list = rates,
	49	.mask = 0,
	50	};
	51
	52	static struct snd_soc_jack hp_jack;
	53
	54	static struct snd_soc_jack_pin hp_jack_pins[] = {
	55	{
	56	.pin = "Headphone Jack",
	57	.mask = SND_JACK_HEADPHONE,
	58	},
	59	{
	60	.pin = "Speaker",
	61	.mask = SND_JACK_HEADPHONE,
	62	.invert = 1,
	63	},
	64	};
	65
	66	static struct snd_soc_jack_gpio hp_jack_gpios[] = {
	67	[0] = {
	68	.gpio = S3C2410_GPG(12),
	69	.name = "hp-gpio",
	70	.report = SND_JACK_HEADPHONE,
	71	.invert = 1,
	72	.debounce_time = 200,
	73	},
	74	};
	75
	76	static struct snd_soc_ops rx1950_ops = {
	77	.startup = rx1950_startup,
	78	.hw_params = rx1950_hw_params,
	79	};
	80
	81	/* s3c24xx digital audio interface glue - connects codec <--> CPU */
	82	static struct snd_soc_dai_link rx1950_uda1380_dai[] = {
	83	{
	84	.name = "uda1380",
	85	.stream_name = "UDA1380 Duplex",
	86	.cpu_dai_name = "s3c24xx-iis",
	87	.codec_dai_name = "uda1380-hifi",
	88	.init = rx1950_uda1380_init,
a08485d8	89	.platform_name = "s3c24xx-iis",
81d97802 VK	90	.codec_name = "uda1380-codec.0-001a",
	91	.ops = &rx1950_ops,
	92	},
	93	};
	94
81d97802 VK	95	/* rx1950 machine dapm widgets */
	96	static const struct snd_soc_dapm_widget uda1380_dapm_widgets[] = {
	97	SND_SOC_DAPM_HP("Headphone Jack", NULL),
	98	SND_SOC_DAPM_MIC("Mic Jack", NULL),
	99	SND_SOC_DAPM_SPK("Speaker", rx1950_spk_power),
	100	};
	101
	102	/* rx1950 machine audio_map */
	103	static const struct snd_soc_dapm_route audio_map[] = {
	104	/* headphone connected to VOUTLHP, VOUTRHP */
	105	{"Headphone Jack", NULL, "VOUTLHP"},
	106	{"Headphone Jack", NULL, "VOUTRHP"},
	107
	108	/* ext speaker connected to VOUTL, VOUTR */
	109	{"Speaker", NULL, "VOUTL"},
	110	{"Speaker", NULL, "VOUTR"},
	111
	112	/* mic is connected to VINM */
	113	{"VINM", NULL, "Mic Jack"},
	114	};
	115
8ae23229 MB	116	static struct snd_soc_card rx1950_asoc = {
8ae23229 MB	117	.name = "rx1950",
095d79dc	118	.owner = THIS_MODULE,
8ae23229 MB	119	.dai_link = rx1950_uda1380_dai,
	120	.num_links = ARRAY_SIZE(rx1950_uda1380_dai),
	121
	122	.dapm_widgets = uda1380_dapm_widgets,
	123	.num_dapm_widgets = ARRAY_SIZE(uda1380_dapm_widgets),
	124	.dapm_routes = audio_map,
	125	.num_dapm_routes = ARRAY_SIZE(audio_map),
	126	};
	127
81d97802	128	static struct platform_device *s3c24xx_snd_device;
81d97802 VK	129
	130	static int rx1950_startup(struct snd_pcm_substream *substream)
	131	{
	132	struct snd_pcm_runtime *runtime = substream->runtime;
	133
81d97802 VK	134	return snd_pcm_hw_constraint_list(runtime, 0,
	135	SNDRV_PCM_HW_PARAM_RATE,
	136	&hw_rates);
	137	}
	138
	139	static int rx1950_spk_power(struct snd_soc_dapm_widget *w,
	140	struct snd_kcontrol *kcontrol, int event)
	141	{
	142	if (SND_SOC_DAPM_EVENT_ON(event))
	143	gpio_set_value(S3C2410_GPA(1), 1);
	144	else
	145	gpio_set_value(S3C2410_GPA(1), 0);
	146
	147	return 0;
	148	}
	149
	150	static int rx1950_hw_params(struct snd_pcm_substream *substream,
	151	struct snd_pcm_hw_params *params)
	152	{
	153	struct snd_soc_pcm_runtime *rtd = substream->private_data;
	154	struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
	155	struct snd_soc_dai *codec_dai = rtd->codec_dai;
	156	int div;
	157	int ret;
	158	unsigned int rate = params_rate(params);
	159	int clk_source, fs_mode;
	160
	161	switch (rate) {
	162	case 16000:
	163	case 48000:
	164	clk_source = S3C24XX_CLKSRC_PCLK;
1fdc7dd5 VK	165	fs_mode = S3C2410_IISMOD_256FS;
	166	div = s3c24xx_i2s_get_clockrate() / (256 * rate);
	167	if (s3c24xx_i2s_get_clockrate() % (256 * rate) > (128 * rate))
81d97802 VK	168	div++;
	169	break;
	170	case 44100:
	171	case 88200:
	172	clk_source = S3C24XX_CLKSRC_MPLL;
ccb3b84f VK	173	fs_mode = S3C2410_IISMOD_384FS;
ccb3b84f VK	174	div = 1;
81d97802 VK	175	break;
	176	default:
	177	printk(KERN_ERR "%s: rate %d is not supported\n",
	178	__func__, rate);
	179	return -EINVAL;
	180	}
	181
	182	/* set codec DAI configuration */
	183	ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S \|
	184	SND_SOC_DAIFMT_NB_NF \| SND_SOC_DAIFMT_CBS_CFS);
	185	if (ret < 0)
	186	return ret;
	187
	188	/* set cpu DAI configuration */
	189	ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S \|
	190	SND_SOC_DAIFMT_NB_NF \| SND_SOC_DAIFMT_CBS_CFS);
	191	if (ret < 0)
	192	return ret;
	193
	194	/* select clock source */
	195	ret = snd_soc_dai_set_sysclk(cpu_dai, clk_source, rate,
	196	SND_SOC_CLOCK_OUT);
	197	if (ret < 0)
	198	return ret;
	199
	200	/* set MCLK division for sample rate */
	201	ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C24XX_DIV_MCLK,
ccb3b84f	202	fs_mode);
81d97802 VK	203	if (ret < 0)
	204	return ret;
	205
	206	/* set BCLK division for sample rate */
	207	ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C24XX_DIV_BCLK,
	208	S3C2410_IISMOD_32FS);
	209	if (ret < 0)
	210	return ret;
	211
	212	/* set prescaler division for sample rate */
	213	ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C24XX_DIV_PRESCALER,
	214	S3C24XX_PRESCALE(div, div));
	215	if (ret < 0)
	216	return ret;
	217
	218	return 0;
	219	}
	220
	221	static int rx1950_uda1380_init(struct snd_soc_pcm_runtime *rtd)
	222	{
	223	struct snd_soc_codec *codec = rtd->codec;
ce6120cc	224	struct snd_soc_dapm_context *dapm = &codec->dapm;
81d97802	225
ce6120cc LG	226	snd_soc_dapm_enable_pin(dapm, "Headphone Jack");
ce6120cc LG	227	snd_soc_dapm_enable_pin(dapm, "Speaker");
b60fc60c	228	snd_soc_dapm_enable_pin(dapm, "Mic Jack");
81d97802	229
81d97802 VK	230	snd_soc_jack_new(codec, "Headphone Jack", SND_JACK_HEADPHONE,
	231	&hp_jack);
	232
	233	snd_soc_jack_add_pins(&hp_jack, ARRAY_SIZE(hp_jack_pins),
	234	hp_jack_pins);
	235
	236	snd_soc_jack_add_gpios(&hp_jack, ARRAY_SIZE(hp_jack_gpios),
	237	hp_jack_gpios);
	238
	239	return 0;
	240	}
	241
	242	static int __init rx1950_init(void)
	243	{
	244	int ret;
	245
dedc3cf5 VK	246	if (!machine_is_rx1950())
	247	return -ENODEV;
	248
81d97802 VK	249	/* configure some gpios */
	250	ret = gpio_request(S3C2410_GPA(1), "speaker-power");
	251	if (ret)
	252	goto err_gpio;
	253
	254	ret = gpio_direction_output(S3C2410_GPA(1), 0);
	255	if (ret)
	256	goto err_gpio_conf;
	257
	258	s3c24xx_snd_device = platform_device_alloc("soc-audio", -1);
	259	if (!s3c24xx_snd_device) {
	260	ret = -ENOMEM;
	261	goto err_plat_alloc;
	262	}
	263
	264	platform_set_drvdata(s3c24xx_snd_device, &rx1950_asoc);
	265	ret = platform_device_add(s3c24xx_snd_device);
	266
	267	if (ret) {
	268	platform_device_put(s3c24xx_snd_device);
	269	goto err_plat_add;
	270	}
	271
81d97802 VK	272	return 0;
81d97802 VK	273
81d97802 VK	274	err_plat_add:
	275	err_plat_alloc:
	276	err_gpio_conf:
	277	gpio_free(S3C2410_GPA(1));
	278
	279	err_gpio:
	280	return ret;
	281	}
	282
	283	static void __exit rx1950_exit(void)
	284	{
	285	platform_device_unregister(s3c24xx_snd_device);
	286	snd_soc_jack_free_gpios(&hp_jack, ARRAY_SIZE(hp_jack_gpios),
	287	hp_jack_gpios);
81d97802 VK	288	gpio_free(S3C2410_GPA(1));
	289	}
	290
	291	module_init(rx1950_init);
	292	module_exit(rx1950_exit);
	293
	294	/* Module information */
	295	MODULE_AUTHOR("Vasily Khoruzhick");
	296	MODULE_DESCRIPTION("ALSA SoC RX1950");
	297	MODULE_LICENSE("GPL");