[deliverable/linux.git] / sound / soc / s3c24xx / 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/module.h>
#include <linux/moduleparam.h>
#include <linux/platform_device.h>
#include <linux/i2c.h>
#include <linux/gpio.h>
#include <linux/clk.h>

#include <sound/soc.h>
#include <sound/uda1380.h>
#include <sound/jack.h>

#include <plat/regs-iis.h>

#include <mach/regs-clock.h>

#include <asm/mach-types.h>

#include "s3c-dma.h"
#include "s3c24xx-i2s.h"
#include "../codecs/uda1380.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	= "samsung-audio",
		.codec_name	= "uda1380-codec.0-001a",
		.ops		= &rx1950_ops,
	},
};

static struct snd_soc_card rx1950_asoc = {
	.name = "rx1950",
	.dai_link = rx1950_uda1380_dai,
	.num_links = ARRAY_SIZE(rx1950_uda1380_dai),
};

/* 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 platform_device *s3c24xx_snd_device;

static int rx1950_startup(struct snd_pcm_substream *substream)
{
	struct snd_pcm_runtime *runtime = substream->runtime;

	runtime->hw.rate_min = hw_rates.list[0];
	runtime->hw.rate_max = hw_rates.list[hw_rates.count - 1];
	runtime->hw.rates = SNDRV_PCM_RATE_KNOT;

	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;
	int err;

	/* Add rx1950 specific widgets */
	err = snd_soc_dapm_new_controls(dapm, uda1380_dapm_widgets,
				  ARRAY_SIZE(uda1380_dapm_widgets));

	if (err)
		return err;

	/* Set up rx1950 specific audio path audio_mapnects */
	err = snd_soc_dapm_add_routes(dapm, audio_map,
				      ARRAY_SIZE(audio_map));

	if (err)
		return err;

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

	snd_soc_dapm_sync(dapm);

	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
	20	#include <linux/module.h>
	21	#include <linux/moduleparam.h>
81d97802	22	#include <linux/platform_device.h>
81d97802 VK	23	#include <linux/i2c.h>
	24	#include <linux/gpio.h>
	25	#include <linux/clk.h>
	26
81d97802	27	#include <sound/soc.h>
81d97802 VK	28	#include <sound/uda1380.h>
	29	#include <sound/jack.h>
	30
	31	#include <plat/regs-iis.h>
	32
	33	#include <mach/regs-clock.h>
	34
dedc3cf5 VK	35	#include <asm/mach-types.h>
dedc3cf5 VK	36
81d97802 VK	37	#include "s3c-dma.h"
	38	#include "s3c24xx-i2s.h"
	39	#include "../codecs/uda1380.h"
	40
	41	static int rx1950_uda1380_init(struct snd_soc_pcm_runtime *rtd);
	42	static int rx1950_startup(struct snd_pcm_substream *substream);
	43	static int rx1950_hw_params(struct snd_pcm_substream *substream,
	44	struct snd_pcm_hw_params *params);
	45	static int rx1950_spk_power(struct snd_soc_dapm_widget *w,
	46	struct snd_kcontrol *kcontrol, int event);
	47
	48	static unsigned int rates[] = {
	49	16000,
	50	44100,
	51	48000,
81d97802 VK	52	};
	53
	54	static struct snd_pcm_hw_constraint_list hw_rates = {
	55	.count = ARRAY_SIZE(rates),
	56	.list = rates,
	57	.mask = 0,
	58	};
	59
	60	static struct snd_soc_jack hp_jack;
	61
	62	static struct snd_soc_jack_pin hp_jack_pins[] = {
	63	{
	64	.pin = "Headphone Jack",
	65	.mask = SND_JACK_HEADPHONE,
	66	},
	67	{
	68	.pin = "Speaker",
	69	.mask = SND_JACK_HEADPHONE,
	70	.invert = 1,
	71	},
	72	};
	73
	74	static struct snd_soc_jack_gpio hp_jack_gpios[] = {
	75	[0] = {
	76	.gpio = S3C2410_GPG(12),
	77	.name = "hp-gpio",
	78	.report = SND_JACK_HEADPHONE,
	79	.invert = 1,
	80	.debounce_time = 200,
	81	},
	82	};
	83
	84	static struct snd_soc_ops rx1950_ops = {
	85	.startup = rx1950_startup,
	86	.hw_params = rx1950_hw_params,
	87	};
	88
	89	/* s3c24xx digital audio interface glue - connects codec <--> CPU */
	90	static struct snd_soc_dai_link rx1950_uda1380_dai[] = {
	91	{
	92	.name = "uda1380",
	93	.stream_name = "UDA1380 Duplex",
	94	.cpu_dai_name = "s3c24xx-iis",
	95	.codec_dai_name = "uda1380-hifi",
	96	.init = rx1950_uda1380_init,
58bb4072	97	.platform_name = "samsung-audio",
81d97802 VK	98	.codec_name = "uda1380-codec.0-001a",
	99	.ops = &rx1950_ops,
	100	},
	101	};
	102
	103	static struct snd_soc_card rx1950_asoc = {
	104	.name = "rx1950",
	105	.dai_link = rx1950_uda1380_dai,
	106	.num_links = ARRAY_SIZE(rx1950_uda1380_dai),
	107	};
	108
	109	/* rx1950 machine dapm widgets */
	110	static const struct snd_soc_dapm_widget uda1380_dapm_widgets[] = {
	111	SND_SOC_DAPM_HP("Headphone Jack", NULL),
	112	SND_SOC_DAPM_MIC("Mic Jack", NULL),
	113	SND_SOC_DAPM_SPK("Speaker", rx1950_spk_power),
	114	};
	115
	116	/* rx1950 machine audio_map */
	117	static const struct snd_soc_dapm_route audio_map[] = {
	118	/* headphone connected to VOUTLHP, VOUTRHP */
	119	{"Headphone Jack", NULL, "VOUTLHP"},
	120	{"Headphone Jack", NULL, "VOUTRHP"},
	121
	122	/* ext speaker connected to VOUTL, VOUTR */
	123	{"Speaker", NULL, "VOUTL"},
	124	{"Speaker", NULL, "VOUTR"},
	125
	126	/* mic is connected to VINM */
	127	{"VINM", NULL, "Mic Jack"},
	128	};
	129
	130	static struct platform_device *s3c24xx_snd_device;
81d97802 VK	131
	132	static int rx1950_startup(struct snd_pcm_substream *substream)
	133	{
	134	struct snd_pcm_runtime *runtime = substream->runtime;
	135
	136	runtime->hw.rate_min = hw_rates.list[0];
	137	runtime->hw.rate_max = hw_rates.list[hw_rates.count - 1];
	138	runtime->hw.rates = SNDRV_PCM_RATE_KNOT;
	139
	140	return snd_pcm_hw_constraint_list(runtime, 0,
	141	SNDRV_PCM_HW_PARAM_RATE,
	142	&hw_rates);
	143	}
	144
	145	static int rx1950_spk_power(struct snd_soc_dapm_widget *w,
	146	struct snd_kcontrol *kcontrol, int event)
	147	{
	148	if (SND_SOC_DAPM_EVENT_ON(event))
	149	gpio_set_value(S3C2410_GPA(1), 1);
	150	else
	151	gpio_set_value(S3C2410_GPA(1), 0);
	152
	153	return 0;
	154	}
	155
	156	static int rx1950_hw_params(struct snd_pcm_substream *substream,
	157	struct snd_pcm_hw_params *params)
	158	{
	159	struct snd_soc_pcm_runtime *rtd = substream->private_data;
	160	struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
	161	struct snd_soc_dai *codec_dai = rtd->codec_dai;
	162	int div;
	163	int ret;
	164	unsigned int rate = params_rate(params);
	165	int clk_source, fs_mode;
	166
	167	switch (rate) {
	168	case 16000:
	169	case 48000:
	170	clk_source = S3C24XX_CLKSRC_PCLK;
1fdc7dd5 VK	171	fs_mode = S3C2410_IISMOD_256FS;
	172	div = s3c24xx_i2s_get_clockrate() / (256 * rate);
	173	if (s3c24xx_i2s_get_clockrate() % (256 * rate) > (128 * rate))
81d97802 VK	174	div++;
	175	break;
	176	case 44100:
	177	case 88200:
	178	clk_source = S3C24XX_CLKSRC_MPLL;
ccb3b84f VK	179	fs_mode = S3C2410_IISMOD_384FS;
ccb3b84f VK	180	div = 1;
81d97802 VK	181	break;
	182	default:
	183	printk(KERN_ERR "%s: rate %d is not supported\n",
	184	__func__, rate);
	185	return -EINVAL;
	186	}
	187
	188	/* set codec DAI configuration */
	189	ret = snd_soc_dai_set_fmt(codec_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	/* set cpu DAI configuration */
	195	ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S \|
	196	SND_SOC_DAIFMT_NB_NF \| SND_SOC_DAIFMT_CBS_CFS);
	197	if (ret < 0)
	198	return ret;
	199
	200	/* select clock source */
	201	ret = snd_soc_dai_set_sysclk(cpu_dai, clk_source, rate,
	202	SND_SOC_CLOCK_OUT);
	203	if (ret < 0)
	204	return ret;
	205
	206	/* set MCLK division for sample rate */
	207	ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C24XX_DIV_MCLK,
ccb3b84f	208	fs_mode);
81d97802 VK	209	if (ret < 0)
	210	return ret;
	211
	212	/* set BCLK division for sample rate */
	213	ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C24XX_DIV_BCLK,
	214	S3C2410_IISMOD_32FS);
	215	if (ret < 0)
	216	return ret;
	217
	218	/* set prescaler division for sample rate */
	219	ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C24XX_DIV_PRESCALER,
	220	S3C24XX_PRESCALE(div, div));
	221	if (ret < 0)
	222	return ret;
	223
	224	return 0;
	225	}
	226
	227	static int rx1950_uda1380_init(struct snd_soc_pcm_runtime *rtd)
	228	{
	229	struct snd_soc_codec *codec = rtd->codec;
ce6120cc	230	struct snd_soc_dapm_context *dapm = &codec->dapm;
81d97802 VK	231	int err;
	232
	233	/* Add rx1950 specific widgets */
ce6120cc	234	err = snd_soc_dapm_new_controls(dapm, uda1380_dapm_widgets,
81d97802 VK	235	ARRAY_SIZE(uda1380_dapm_widgets));
	236
	237	if (err)
	238	return err;
	239
	240	/* Set up rx1950 specific audio path audio_mapnects */
ce6120cc	241	err = snd_soc_dapm_add_routes(dapm, audio_map,
81d97802 VK	242	ARRAY_SIZE(audio_map));
	243
	244	if (err)
	245	return err;
	246
ce6120cc LG	247	snd_soc_dapm_enable_pin(dapm, "Headphone Jack");
ce6120cc LG	248	snd_soc_dapm_enable_pin(dapm, "Speaker");
81d97802	249
ce6120cc	250	snd_soc_dapm_sync(dapm);
81d97802 VK	251
	252	snd_soc_jack_new(codec, "Headphone Jack", SND_JACK_HEADPHONE,
	253	&hp_jack);
	254
	255	snd_soc_jack_add_pins(&hp_jack, ARRAY_SIZE(hp_jack_pins),
	256	hp_jack_pins);
	257
	258	snd_soc_jack_add_gpios(&hp_jack, ARRAY_SIZE(hp_jack_gpios),
	259	hp_jack_gpios);
	260
	261	return 0;
	262	}
	263
	264	static int __init rx1950_init(void)
	265	{
	266	int ret;
	267
dedc3cf5 VK	268	if (!machine_is_rx1950())
	269	return -ENODEV;
	270
81d97802 VK	271	/* configure some gpios */
	272	ret = gpio_request(S3C2410_GPA(1), "speaker-power");
	273	if (ret)
	274	goto err_gpio;
	275
	276	ret = gpio_direction_output(S3C2410_GPA(1), 0);
	277	if (ret)
	278	goto err_gpio_conf;
	279
	280	s3c24xx_snd_device = platform_device_alloc("soc-audio", -1);
	281	if (!s3c24xx_snd_device) {
	282	ret = -ENOMEM;
	283	goto err_plat_alloc;
	284	}
	285
	286	platform_set_drvdata(s3c24xx_snd_device, &rx1950_asoc);
	287	ret = platform_device_add(s3c24xx_snd_device);
	288
	289	if (ret) {
	290	platform_device_put(s3c24xx_snd_device);
	291	goto err_plat_add;
	292	}
	293
81d97802 VK	294	return 0;
81d97802 VK	295
81d97802 VK	296	err_plat_add:
	297	err_plat_alloc:
	298	err_gpio_conf:
	299	gpio_free(S3C2410_GPA(1));
	300
	301	err_gpio:
	302	return ret;
	303	}
	304
	305	static void __exit rx1950_exit(void)
	306	{
	307	platform_device_unregister(s3c24xx_snd_device);
	308	snd_soc_jack_free_gpios(&hp_jack, ARRAY_SIZE(hp_jack_gpios),
	309	hp_jack_gpios);
81d97802 VK	310	gpio_free(S3C2410_GPA(1));
	311	}
	312
	313	module_init(rx1950_init);
	314	module_exit(rx1950_exit);
	315
	316	/* Module information */
	317	MODULE_AUTHOR("Vasily Khoruzhick");
	318	MODULE_DESCRIPTION("ALSA SoC RX1950");
	319	MODULE_LICENSE("GPL");