[deliverable/linux.git] / sound / soc / s3c24xx / s3c64xx-i2s.c

/* sound/soc/s3c24xx/s3c64xx-i2s.c
 *
 * ALSA SoC Audio Layer - S3C64XX I2S driver
 *
 * Copyright 2008 Openmoko, Inc.
 * Copyright 2008 Simtec Electronics
 *      Ben Dooks <ben@simtec.co.uk>
 *      http://armlinux.simtec.co.uk/
 *
 * 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/init.h>
#include <linux/module.h>
#include <linux/device.h>
#include <linux/delay.h>
#include <linux/clk.h>
#include <linux/kernel.h>
#include <linux/gpio.h>
#include <linux/io.h>

#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/initval.h>
#include <sound/soc.h>

#include <plat/regs-s3c2412-iis.h>
#include <plat/gpio-bank-d.h>
#include <plat/gpio-bank-e.h>
#include <plat/gpio-cfg.h>

#include <mach/map.h>
#include <mach/dma.h>

#include "s3c-dma.h"
#include "s3c64xx-i2s.h"

static struct s3c2410_dma_client s3c64xx_dma_client_out = {
	.name		= "I2S PCM Stereo out"
};

static struct s3c2410_dma_client s3c64xx_dma_client_in = {
	.name		= "I2S PCM Stereo in"
};

static struct s3c_dma_params s3c64xx_i2s_pcm_stereo_out[2] = {
	[0] = {
		.channel	= DMACH_I2S0_OUT,
		.client		= &s3c64xx_dma_client_out,
		.dma_addr	= S3C64XX_PA_IIS0 + S3C2412_IISTXD,
		.dma_size	= 4,
	},
	[1] = {
		.channel	= DMACH_I2S1_OUT,
		.client		= &s3c64xx_dma_client_out,
		.dma_addr	= S3C64XX_PA_IIS1 + S3C2412_IISTXD,
		.dma_size	= 4,
	},
};

static struct s3c_dma_params s3c64xx_i2s_pcm_stereo_in[2] = {
	[0] = {
		.channel	= DMACH_I2S0_IN,
		.client		= &s3c64xx_dma_client_in,
		.dma_addr	= S3C64XX_PA_IIS0 + S3C2412_IISRXD,
		.dma_size	= 4,
	},
	[1] = {
		.channel	= DMACH_I2S1_IN,
		.client		= &s3c64xx_dma_client_in,
		.dma_addr	= S3C64XX_PA_IIS1 + S3C2412_IISRXD,
		.dma_size	= 4,
	},
};

static struct s3c_i2sv2_info s3c64xx_i2s[2];

static inline struct s3c_i2sv2_info *to_info(struct snd_soc_dai *cpu_dai)
{
	return cpu_dai->private_data;
}

static int s3c64xx_i2s_set_sysclk(struct snd_soc_dai *cpu_dai,
				  int clk_id, unsigned int freq, int dir)
{
	struct s3c_i2sv2_info *i2s = to_info(cpu_dai);
	u32 iismod = readl(i2s->regs + S3C2412_IISMOD);

	switch (clk_id) {
	case S3C64XX_CLKSRC_PCLK:
		iismod &= ~S3C64XX_IISMOD_IMS_SYSMUX;
		break;

	case S3C64XX_CLKSRC_MUX:
		iismod |= S3C64XX_IISMOD_IMS_SYSMUX;
		break;

	case S3C64XX_CLKSRC_CDCLK:
		switch (dir) {
		case SND_SOC_CLOCK_IN:
			iismod |= S3C64XX_IISMOD_CDCLKCON;
			break;
		case SND_SOC_CLOCK_OUT:
			iismod &= ~S3C64XX_IISMOD_CDCLKCON;
			break;
		default:
			return -EINVAL;
		}
		break;

	default:
		return -EINVAL;
	}

	writel(iismod, i2s->regs + S3C2412_IISMOD);

	return 0;
}

struct clk *s3c64xx_i2s_get_clock(struct snd_soc_dai *dai)
{
	struct s3c_i2sv2_info *i2s = to_info(dai);
	u32 iismod = readl(i2s->regs + S3C2412_IISMOD);

	if (iismod & S3C64XX_IISMOD_IMS_SYSMUX)
		return i2s->iis_cclk;
	else
		return i2s->iis_pclk;
}
EXPORT_SYMBOL_GPL(s3c64xx_i2s_get_clock);

static int s3c64xx_i2s_probe(struct platform_device *pdev,
			     struct snd_soc_dai *dai)
{
	/* configure GPIO for i2s port */
	switch (dai->id) {
	case 0:
		s3c_gpio_cfgpin(S3C64XX_GPD(0), S3C64XX_GPD0_I2S0_CLK);
		s3c_gpio_cfgpin(S3C64XX_GPD(1), S3C64XX_GPD1_I2S0_CDCLK);
		s3c_gpio_cfgpin(S3C64XX_GPD(2), S3C64XX_GPD2_I2S0_LRCLK);
		s3c_gpio_cfgpin(S3C64XX_GPD(3), S3C64XX_GPD3_I2S0_DI);
		s3c_gpio_cfgpin(S3C64XX_GPD(4), S3C64XX_GPD4_I2S0_D0);
		break;
	case 1:
		s3c_gpio_cfgpin(S3C64XX_GPE(0), S3C64XX_GPE0_I2S1_CLK);
		s3c_gpio_cfgpin(S3C64XX_GPE(1), S3C64XX_GPE1_I2S1_CDCLK);
		s3c_gpio_cfgpin(S3C64XX_GPE(2), S3C64XX_GPE2_I2S1_LRCLK);
		s3c_gpio_cfgpin(S3C64XX_GPE(3), S3C64XX_GPE3_I2S1_DI);
		s3c_gpio_cfgpin(S3C64XX_GPE(4), S3C64XX_GPE4_I2S1_D0);
	}

	return 0;
}


#define S3C64XX_I2S_RATES \
	(SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 | SNDRV_PCM_RATE_16000 | \
	SNDRV_PCM_RATE_22050 | SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 | \
	SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_88200 | SNDRV_PCM_RATE_96000)

#define S3C64XX_I2S_FMTS \
	(SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_S16_LE |\
	 SNDRV_PCM_FMTBIT_S24_LE)

static struct snd_soc_dai_ops s3c64xx_i2s_dai_ops = {
	.set_sysclk	= s3c64xx_i2s_set_sysclk,	
};

struct snd_soc_dai s3c64xx_i2s_dai[] = {
	{
		.name		= "s3c64xx-i2s",
		.id		= 0,
		.probe		= s3c64xx_i2s_probe,
		.playback = {
			.channels_min	= 2,
			.channels_max	= 2,
			.rates		= S3C64XX_I2S_RATES,
			.formats	= S3C64XX_I2S_FMTS,
		},
		.capture = {
			 .channels_min	= 2,
			 .channels_max	= 2,
			 .rates		= S3C64XX_I2S_RATES,
			 .formats	= S3C64XX_I2S_FMTS,
		 },
		.ops = &s3c64xx_i2s_dai_ops,
		.symmetric_rates = 1,
	},
	{
		.name		= "s3c64xx-i2s",
		.id		= 1,
		.probe		= s3c64xx_i2s_probe,
		.playback = {
			.channels_min	= 2,
			.channels_max	= 2,
			.rates		= S3C64XX_I2S_RATES,
			.formats	= S3C64XX_I2S_FMTS,
		},
		.capture = {
			 .channels_min	= 2,
			 .channels_max	= 2,
			 .rates		= S3C64XX_I2S_RATES,
			 .formats	= S3C64XX_I2S_FMTS,
		 },
		.ops = &s3c64xx_i2s_dai_ops,
		.symmetric_rates = 1,
	},
};
EXPORT_SYMBOL_GPL(s3c64xx_i2s_dai);

static __devinit int s3c64xx_iis_dev_probe(struct platform_device *pdev)
{
	struct s3c_i2sv2_info *i2s;
	struct snd_soc_dai *dai;
	int ret;

	if (pdev->id >= ARRAY_SIZE(s3c64xx_i2s)) {
		dev_err(&pdev->dev, "id %d out of range\n", pdev->id);
		return -EINVAL;
	}

	i2s = &s3c64xx_i2s[pdev->id];
	dai = &s3c64xx_i2s_dai[pdev->id];
	dai->dev = &pdev->dev;

	i2s->dma_capture = &s3c64xx_i2s_pcm_stereo_in[pdev->id];
	i2s->dma_playback = &s3c64xx_i2s_pcm_stereo_out[pdev->id];

	i2s->iis_cclk = clk_get(&pdev->dev, "audio-bus");
	if (IS_ERR(i2s->iis_cclk)) {
		dev_err(&pdev->dev, "failed to get audio-bus\n");
		ret = PTR_ERR(i2s->iis_cclk);
		goto err;
	}

	clk_enable(i2s->iis_cclk);

	ret = s3c_i2sv2_probe(pdev, dai, i2s, 0);
	if (ret)
		goto err_clk;

	ret = s3c_i2sv2_register_dai(dai);
	if (ret != 0)
		goto err_i2sv2;

	return 0;

err_i2sv2:
	/* Not implemented for I2Sv2 core yet */
err_clk:
	clk_put(i2s->iis_cclk);
err:
	return ret;
}

static __devexit int s3c64xx_iis_dev_remove(struct platform_device *pdev)
{
	dev_err(&pdev->dev, "Device removal not yet supported\n");
	return 0;
}

static struct platform_driver s3c64xx_iis_driver = {
	.probe  = s3c64xx_iis_dev_probe,
	.remove = s3c64xx_iis_dev_remove,
	.driver = {
		.name = "s3c64xx-iis",
		.owner = THIS_MODULE,
	},
};

static int __init s3c64xx_i2s_init(void)
{
	return platform_driver_register(&s3c64xx_iis_driver);
}
module_init(s3c64xx_i2s_init);

static void __exit s3c64xx_i2s_exit(void)
{
	platform_driver_unregister(&s3c64xx_iis_driver);
}
module_exit(s3c64xx_i2s_exit);

/* Module information */
MODULE_AUTHOR("Ben Dooks, <ben@simtec.co.uk>");
MODULE_DESCRIPTION("S3C64XX I2S SoC Interface");
MODULE_LICENSE("GPL");
Commit	Line	Data
f8cf8176 BD	1	/* sound/soc/s3c24xx/s3c64xx-i2s.c
	2	*
	3	* ALSA SoC Audio Layer - S3C64XX I2S driver
	4	*
	5	* Copyright 2008 Openmoko, Inc.
	6	* Copyright 2008 Simtec Electronics
	7	* Ben Dooks <ben@simtec.co.uk>
	8	* http://armlinux.simtec.co.uk/
	9	*
	10	* This program is free software; you can redistribute it and/or modify
	11	* it under the terms of the GNU General Public License version 2 as
	12	* published by the Free Software Foundation.
	13	*/
	14
	15	#include <linux/init.h>
	16	#include <linux/module.h>
	17	#include <linux/device.h>
	18	#include <linux/delay.h>
	19	#include <linux/clk.h>
	20	#include <linux/kernel.h>
	21	#include <linux/gpio.h>
	22	#include <linux/io.h>
	23
	24	#include <sound/core.h>
	25	#include <sound/pcm.h>
	26	#include <sound/pcm_params.h>
	27	#include <sound/initval.h>
	28	#include <sound/soc.h>
	29
	30	#include <plat/regs-s3c2412-iis.h>
	31	#include <plat/gpio-bank-d.h>
	32	#include <plat/gpio-bank-e.h>
	33	#include <plat/gpio-cfg.h>
f8cf8176 BD	34
	35	#include <mach/map.h>
	36	#include <mach/dma.h>
	37
d3ff5a3e	38	#include "s3c-dma.h"
f8cf8176 BD	39	#include "s3c64xx-i2s.h"
	40
	41	static struct s3c2410_dma_client s3c64xx_dma_client_out = {
	42	.name = "I2S PCM Stereo out"
	43	};
	44
	45	static struct s3c2410_dma_client s3c64xx_dma_client_in = {
	46	.name = "I2S PCM Stereo in"
	47	};
	48
faa31776	49	static struct s3c_dma_params s3c64xx_i2s_pcm_stereo_out[2] = {
f8cf8176 BD	50	[0] = {
	51	.channel = DMACH_I2S0_OUT,
	52	.client = &s3c64xx_dma_client_out,
	53	.dma_addr = S3C64XX_PA_IIS0 + S3C2412_IISTXD,
	54	.dma_size = 4,
	55	},
	56	[1] = {
	57	.channel = DMACH_I2S1_OUT,
	58	.client = &s3c64xx_dma_client_out,
	59	.dma_addr = S3C64XX_PA_IIS1 + S3C2412_IISTXD,
	60	.dma_size = 4,
	61	},
	62	};
	63
faa31776	64	static struct s3c_dma_params s3c64xx_i2s_pcm_stereo_in[2] = {
f8cf8176 BD	65	[0] = {
	66	.channel = DMACH_I2S0_IN,
	67	.client = &s3c64xx_dma_client_in,
	68	.dma_addr = S3C64XX_PA_IIS0 + S3C2412_IISRXD,
	69	.dma_size = 4,
	70	},
	71	[1] = {
	72	.channel = DMACH_I2S1_IN,
	73	.client = &s3c64xx_dma_client_in,
	74	.dma_addr = S3C64XX_PA_IIS1 + S3C2412_IISRXD,
	75	.dma_size = 4,
	76	},
	77	};
	78
	79	static struct s3c_i2sv2_info s3c64xx_i2s[2];
	80
	81	static inline struct s3c_i2sv2_info to_info(struct snd_soc_dai cpu_dai)
	82	{
	83	return cpu_dai->private_data;
	84	}
	85
	86	static int s3c64xx_i2s_set_sysclk(struct snd_soc_dai *cpu_dai,
	87	int clk_id, unsigned int freq, int dir)
	88	{
	89	struct s3c_i2sv2_info *i2s = to_info(cpu_dai);
	90	u32 iismod = readl(i2s->regs + S3C2412_IISMOD);
	91
	92	switch (clk_id) {
	93	case S3C64XX_CLKSRC_PCLK:
	94	iismod &= ~S3C64XX_IISMOD_IMS_SYSMUX;
	95	break;
	96
	97	case S3C64XX_CLKSRC_MUX:
	98	iismod \|= S3C64XX_IISMOD_IMS_SYSMUX;
	99	break;
	100
8bb01489 MB	101	case S3C64XX_CLKSRC_CDCLK:
	102	switch (dir) {
	103	case SND_SOC_CLOCK_IN:
	104	iismod \|= S3C64XX_IISMOD_CDCLKCON;
	105	break;
	106	case SND_SOC_CLOCK_OUT:
	107	iismod &= ~S3C64XX_IISMOD_CDCLKCON;
	108	break;
	109	default:
	110	return -EINVAL;
	111	}
	112	break;
	113
f8cf8176 BD	114	default:
	115	return -EINVAL;
	116	}
	117
	118	writel(iismod, i2s->regs + S3C2412_IISMOD);
	119
	120	return 0;
	121	}
	122
51438449	123	struct clk s3c64xx_i2s_get_clock(struct snd_soc_dai dai)
f8cf8176 BD	124	{
f8cf8176 BD	125	struct s3c_i2sv2_info *i2s = to_info(dai);
b1cd6b9e	126	u32 iismod = readl(i2s->regs + S3C2412_IISMOD);
f8cf8176	127
b1cd6b9e J	128	if (iismod & S3C64XX_IISMOD_IMS_SYSMUX)
	129	return i2s->iis_cclk;
	130	else
	131	return i2s->iis_pclk;
f8cf8176	132	}
51438449	133	EXPORT_SYMBOL_GPL(s3c64xx_i2s_get_clock);
f8cf8176 BD	134
	135	static int s3c64xx_i2s_probe(struct platform_device *pdev,
	136	struct snd_soc_dai *dai)
	137	{
f8cf8176	138	/* configure GPIO for i2s port */
172fd9e2	139	switch (dai->id) {
f8cf8176 BD	140	case 0:
	141	s3c_gpio_cfgpin(S3C64XX_GPD(0), S3C64XX_GPD0_I2S0_CLK);
	142	s3c_gpio_cfgpin(S3C64XX_GPD(1), S3C64XX_GPD1_I2S0_CDCLK);
	143	s3c_gpio_cfgpin(S3C64XX_GPD(2), S3C64XX_GPD2_I2S0_LRCLK);
	144	s3c_gpio_cfgpin(S3C64XX_GPD(3), S3C64XX_GPD3_I2S0_DI);
	145	s3c_gpio_cfgpin(S3C64XX_GPD(4), S3C64XX_GPD4_I2S0_D0);
	146	break;
	147	case 1:
	148	s3c_gpio_cfgpin(S3C64XX_GPE(0), S3C64XX_GPE0_I2S1_CLK);
	149	s3c_gpio_cfgpin(S3C64XX_GPE(1), S3C64XX_GPE1_I2S1_CDCLK);
	150	s3c_gpio_cfgpin(S3C64XX_GPE(2), S3C64XX_GPE2_I2S1_LRCLK);
	151	s3c_gpio_cfgpin(S3C64XX_GPE(3), S3C64XX_GPE3_I2S1_DI);
	152	s3c_gpio_cfgpin(S3C64XX_GPE(4), S3C64XX_GPE4_I2S1_D0);
	153	}
	154
	155	return 0;
	156	}
	157
	158
	159	#define S3C64XX_I2S_RATES \
	160	(SNDRV_PCM_RATE_8000 \| SNDRV_PCM_RATE_11025 \| SNDRV_PCM_RATE_16000 \| \
	161	SNDRV_PCM_RATE_22050 \| SNDRV_PCM_RATE_32000 \| SNDRV_PCM_RATE_44100 \| \
	162	SNDRV_PCM_RATE_48000 \| SNDRV_PCM_RATE_88200 \| SNDRV_PCM_RATE_96000)
	163
	164	#define S3C64XX_I2S_FMTS \
553b1dd5 MB	165	(SNDRV_PCM_FMTBIT_S8 \| SNDRV_PCM_FMTBIT_S16_LE \|\
553b1dd5 MB	166	SNDRV_PCM_FMTBIT_S24_LE)
f8cf8176	167
f2a5d6a2 MB	168	static struct snd_soc_dai_ops s3c64xx_i2s_dai_ops = {
	169	.set_sysclk = s3c64xx_i2s_set_sysclk,
	170	};
	171
172fd9e2 MB	172	struct snd_soc_dai s3c64xx_i2s_dai[] = {
	173	{
	174	.name = "s3c64xx-i2s",
	175	.id = 0,
	176	.probe = s3c64xx_i2s_probe,
	177	.playback = {
	178	.channels_min = 2,
	179	.channels_max = 2,
	180	.rates = S3C64XX_I2S_RATES,
	181	.formats = S3C64XX_I2S_FMTS,
	182	},
	183	.capture = {
	184	.channels_min = 2,
	185	.channels_max = 2,
	186	.rates = S3C64XX_I2S_RATES,
	187	.formats = S3C64XX_I2S_FMTS,
	188	},
	189	.ops = &s3c64xx_i2s_dai_ops,
4bc4d899	190	.symmetric_rates = 1,
f8cf8176	191	},
172fd9e2 MB	192	{
	193	.name = "s3c64xx-i2s",
	194	.id = 1,
	195	.probe = s3c64xx_i2s_probe,
	196	.playback = {
	197	.channels_min = 2,
	198	.channels_max = 2,
	199	.rates = S3C64XX_I2S_RATES,
	200	.formats = S3C64XX_I2S_FMTS,
	201	},
	202	.capture = {
	203	.channels_min = 2,
	204	.channels_max = 2,
	205	.rates = S3C64XX_I2S_RATES,
	206	.formats = S3C64XX_I2S_FMTS,
	207	},
	208	.ops = &s3c64xx_i2s_dai_ops,
4bc4d899	209	.symmetric_rates = 1,
f8cf8176	210	},
f8cf8176 BD	211	};
	212	EXPORT_SYMBOL_GPL(s3c64xx_i2s_dai);
	213
172fd9e2 MB	214	static __devinit int s3c64xx_iis_dev_probe(struct platform_device *pdev)
	215	{
	216	struct s3c_i2sv2_info *i2s;
	217	struct snd_soc_dai *dai;
	218	int ret;
	219
	220	if (pdev->id >= ARRAY_SIZE(s3c64xx_i2s)) {
	221	dev_err(&pdev->dev, "id %d out of range\n", pdev->id);
	222	return -EINVAL;
	223	}
	224
	225	i2s = &s3c64xx_i2s[pdev->id];
	226	dai = &s3c64xx_i2s_dai[pdev->id];
	227	dai->dev = &pdev->dev;
	228
	229	i2s->dma_capture = &s3c64xx_i2s_pcm_stereo_in[pdev->id];
	230	i2s->dma_playback = &s3c64xx_i2s_pcm_stereo_out[pdev->id];
	231
	232	i2s->iis_cclk = clk_get(&pdev->dev, "audio-bus");
	233	if (IS_ERR(i2s->iis_cclk)) {
09aa60df	234	dev_err(&pdev->dev, "failed to get audio-bus\n");
172fd9e2 MB	235	ret = PTR_ERR(i2s->iis_cclk);
	236	goto err;
	237	}
	238
6fc786d5 JB	239	clk_enable(i2s->iis_cclk);
6fc786d5 JB	240
71437552	241	ret = s3c_i2sv2_probe(pdev, dai, i2s, 0);
172fd9e2 MB	242	if (ret)
	243	goto err_clk;
	244
a7be4d92	245	ret = s3c_i2sv2_register_dai(dai);
172fd9e2 MB	246	if (ret != 0)
	247	goto err_i2sv2;
	248
	249	return 0;
	250
	251	err_i2sv2:
	252	/* Not implemented for I2Sv2 core yet */
	253	err_clk:
	254	clk_put(i2s->iis_cclk);
	255	err:
	256	return ret;
	257	}
	258
	259	static __devexit int s3c64xx_iis_dev_remove(struct platform_device *pdev)
	260	{
	261	dev_err(&pdev->dev, "Device removal not yet supported\n");
	262	return 0;
	263	}
	264
	265	static struct platform_driver s3c64xx_iis_driver = {
	266	.probe = s3c64xx_iis_dev_probe,
	267	.remove = s3c64xx_iis_dev_remove,
	268	.driver = {
	269	.name = "s3c64xx-iis",
	270	.owner = THIS_MODULE,
	271	},
	272	};
	273
f8cf8176 BD	274	static int __init s3c64xx_i2s_init(void)
f8cf8176 BD	275	{
172fd9e2	276	return platform_driver_register(&s3c64xx_iis_driver);
f8cf8176 BD	277	}
	278	module_init(s3c64xx_i2s_init);
	279
	280	static void __exit s3c64xx_i2s_exit(void)
	281	{
172fd9e2	282	platform_driver_unregister(&s3c64xx_iis_driver);
f8cf8176 BD	283	}
	284	module_exit(s3c64xx_i2s_exit);
	285
	286	/* Module information */
	287	MODULE_AUTHOR("Ben Dooks, <ben@simtec.co.uk>");
	288	MODULE_DESCRIPTION("S3C64XX I2S SoC Interface");
	289	MODULE_LICENSE("GPL");