[mirror_ubuntu-bionic-kernel.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 <plat/audio.h>

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

#include "s3c24xx-pcm.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 s3c24xx_pcm_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 s3c24xx_pcm_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);

	return i2s->iis_cclk;
}
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;
	}

	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>
	34	#include <plat/audio.h>
	35
	36	#include <mach/map.h>
	37	#include <mach/dma.h>
	38
	39	#include "s3c24xx-pcm.h"
	40	#include "s3c64xx-i2s.h"
	41
	42	static struct s3c2410_dma_client s3c64xx_dma_client_out = {
	43	.name = "I2S PCM Stereo out"
	44	};
	45
	46	static struct s3c2410_dma_client s3c64xx_dma_client_in = {
	47	.name = "I2S PCM Stereo in"
	48	};
	49
	50	static struct s3c24xx_pcm_dma_params s3c64xx_i2s_pcm_stereo_out[2] = {
	51	[0] = {
	52	.channel = DMACH_I2S0_OUT,
	53	.client = &s3c64xx_dma_client_out,
	54	.dma_addr = S3C64XX_PA_IIS0 + S3C2412_IISTXD,
	55	.dma_size = 4,
	56	},
	57	[1] = {
	58	.channel = DMACH_I2S1_OUT,
	59	.client = &s3c64xx_dma_client_out,
	60	.dma_addr = S3C64XX_PA_IIS1 + S3C2412_IISTXD,
	61	.dma_size = 4,
	62	},
	63	};
	64
65	static struct s3c24xx_pcm_dma_params s3c64xx_i2s_pcm_stereo_in[2] = {
66	[0] = {
67	.channel = DMACH_I2S0_IN,
68	.client = &s3c64xx_dma_client_in,
69	.dma_addr = S3C64XX_PA_IIS0 + S3C2412_IISRXD,
70	.dma_size = 4,
71	},
72	[1] = {
73	.channel = DMACH_I2S1_IN,
74	.client = &s3c64xx_dma_client_in,
75	.dma_addr = S3C64XX_PA_IIS1 + S3C2412_IISRXD,
76	.dma_size = 4,
77	},
78	};
79
80	static struct s3c_i2sv2_info s3c64xx_i2s[2];
81
82	static inline struct s3c_i2sv2_info to_info(struct snd_soc_dai cpu_dai)
83	{
84	return cpu_dai->private_data;
85	}
86
87	static int s3c64xx_i2s_set_sysclk(struct snd_soc_dai *cpu_dai,
88	int clk_id, unsigned int freq, int dir)
89	{
90	struct s3c_i2sv2_info *i2s = to_info(cpu_dai);
91	u32 iismod = readl(i2s->regs + S3C2412_IISMOD);
92
93	switch (clk_id) {
94	case S3C64XX_CLKSRC_PCLK:
95	iismod &= ~S3C64XX_IISMOD_IMS_SYSMUX;
96	break;
97
98	case S3C64XX_CLKSRC_MUX:
99	iismod \|= S3C64XX_IISMOD_IMS_SYSMUX;
100	break;
101
8bb01489 MB	102	case S3C64XX_CLKSRC_CDCLK:
	103	switch (dir) {
	104	case SND_SOC_CLOCK_IN:
	105	iismod \|= S3C64XX_IISMOD_CDCLKCON;
	106	break;
	107	case SND_SOC_CLOCK_OUT:
	108	iismod &= ~S3C64XX_IISMOD_CDCLKCON;
	109	break;
	110	default:
	111	return -EINVAL;
	112	}
	113	break;
	114
f8cf8176 BD	115	default:
	116	return -EINVAL;
	117	}
	118
	119	writel(iismod, i2s->regs + S3C2412_IISMOD);
	120
	121	return 0;
	122	}
	123
51438449	124	struct clk s3c64xx_i2s_get_clock(struct snd_soc_dai dai)
f8cf8176 BD	125	{
	126	struct s3c_i2sv2_info *i2s = to_info(dai);
	127
51438449	128	return i2s->iis_cclk;
f8cf8176	129	}
51438449	130	EXPORT_SYMBOL_GPL(s3c64xx_i2s_get_clock);
f8cf8176 BD	131
	132	static int s3c64xx_i2s_probe(struct platform_device *pdev,
	133	struct snd_soc_dai *dai)
	134	{
f8cf8176	135	/* configure GPIO for i2s port */
172fd9e2	136	switch (dai->id) {
f8cf8176 BD	137	case 0:
	138	s3c_gpio_cfgpin(S3C64XX_GPD(0), S3C64XX_GPD0_I2S0_CLK);
	139	s3c_gpio_cfgpin(S3C64XX_GPD(1), S3C64XX_GPD1_I2S0_CDCLK);
	140	s3c_gpio_cfgpin(S3C64XX_GPD(2), S3C64XX_GPD2_I2S0_LRCLK);
	141	s3c_gpio_cfgpin(S3C64XX_GPD(3), S3C64XX_GPD3_I2S0_DI);
	142	s3c_gpio_cfgpin(S3C64XX_GPD(4), S3C64XX_GPD4_I2S0_D0);
	143	break;
	144	case 1:
	145	s3c_gpio_cfgpin(S3C64XX_GPE(0), S3C64XX_GPE0_I2S1_CLK);
	146	s3c_gpio_cfgpin(S3C64XX_GPE(1), S3C64XX_GPE1_I2S1_CDCLK);
	147	s3c_gpio_cfgpin(S3C64XX_GPE(2), S3C64XX_GPE2_I2S1_LRCLK);
	148	s3c_gpio_cfgpin(S3C64XX_GPE(3), S3C64XX_GPE3_I2S1_DI);
	149	s3c_gpio_cfgpin(S3C64XX_GPE(4), S3C64XX_GPE4_I2S1_D0);
	150	}
	151
	152	return 0;
	153	}
	154
	155
	156	#define S3C64XX_I2S_RATES \
	157	(SNDRV_PCM_RATE_8000 \| SNDRV_PCM_RATE_11025 \| SNDRV_PCM_RATE_16000 \| \
	158	SNDRV_PCM_RATE_22050 \| SNDRV_PCM_RATE_32000 \| SNDRV_PCM_RATE_44100 \| \
	159	SNDRV_PCM_RATE_48000 \| SNDRV_PCM_RATE_88200 \| SNDRV_PCM_RATE_96000)
	160
	161	#define S3C64XX_I2S_FMTS \
553b1dd5 MB	162	(SNDRV_PCM_FMTBIT_S8 \| SNDRV_PCM_FMTBIT_S16_LE \|\
553b1dd5 MB	163	SNDRV_PCM_FMTBIT_S24_LE)
f8cf8176	164
f2a5d6a2 MB	165	static struct snd_soc_dai_ops s3c64xx_i2s_dai_ops = {
	166	.set_sysclk = s3c64xx_i2s_set_sysclk,
	167	};
	168
172fd9e2 MB	169	struct snd_soc_dai s3c64xx_i2s_dai[] = {
	170	{
	171	.name = "s3c64xx-i2s",
	172	.id = 0,
	173	.probe = s3c64xx_i2s_probe,
	174	.playback = {
	175	.channels_min = 2,
	176	.channels_max = 2,
	177	.rates = S3C64XX_I2S_RATES,
	178	.formats = S3C64XX_I2S_FMTS,
	179	},
	180	.capture = {
	181	.channels_min = 2,
	182	.channels_max = 2,
	183	.rates = S3C64XX_I2S_RATES,
	184	.formats = S3C64XX_I2S_FMTS,
	185	},
	186	.ops = &s3c64xx_i2s_dai_ops,
4bc4d899	187	.symmetric_rates = 1,
f8cf8176	188	},
172fd9e2 MB	189	{
	190	.name = "s3c64xx-i2s",
	191	.id = 1,
	192	.probe = s3c64xx_i2s_probe,
	193	.playback = {
	194	.channels_min = 2,
	195	.channels_max = 2,
	196	.rates = S3C64XX_I2S_RATES,
	197	.formats = S3C64XX_I2S_FMTS,
	198	},
	199	.capture = {
	200	.channels_min = 2,
	201	.channels_max = 2,
	202	.rates = S3C64XX_I2S_RATES,
	203	.formats = S3C64XX_I2S_FMTS,
	204	},
	205	.ops = &s3c64xx_i2s_dai_ops,
4bc4d899	206	.symmetric_rates = 1,
f8cf8176	207	},
f8cf8176 BD	208	};
	209	EXPORT_SYMBOL_GPL(s3c64xx_i2s_dai);
	210
172fd9e2 MB	211	static __devinit int s3c64xx_iis_dev_probe(struct platform_device *pdev)
	212	{
	213	struct s3c_i2sv2_info *i2s;
	214	struct snd_soc_dai *dai;
	215	int ret;
	216
	217	if (pdev->id >= ARRAY_SIZE(s3c64xx_i2s)) {
	218	dev_err(&pdev->dev, "id %d out of range\n", pdev->id);
	219	return -EINVAL;
	220	}
	221
	222	i2s = &s3c64xx_i2s[pdev->id];
	223	dai = &s3c64xx_i2s_dai[pdev->id];
	224	dai->dev = &pdev->dev;
	225
	226	i2s->dma_capture = &s3c64xx_i2s_pcm_stereo_in[pdev->id];
	227	i2s->dma_playback = &s3c64xx_i2s_pcm_stereo_out[pdev->id];
	228
	229	i2s->iis_cclk = clk_get(&pdev->dev, "audio-bus");
	230	if (IS_ERR(i2s->iis_cclk)) {
09aa60df	231	dev_err(&pdev->dev, "failed to get audio-bus\n");
172fd9e2 MB	232	ret = PTR_ERR(i2s->iis_cclk);
	233	goto err;
	234	}
	235
71437552	236	ret = s3c_i2sv2_probe(pdev, dai, i2s, 0);
172fd9e2 MB	237	if (ret)
	238	goto err_clk;
	239
a7be4d92	240	ret = s3c_i2sv2_register_dai(dai);
172fd9e2 MB	241	if (ret != 0)
	242	goto err_i2sv2;
	243
	244	return 0;
	245
	246	err_i2sv2:
	247	/* Not implemented for I2Sv2 core yet */
	248	err_clk:
	249	clk_put(i2s->iis_cclk);
	250	err:
	251	return ret;
	252	}
	253
	254	static __devexit int s3c64xx_iis_dev_remove(struct platform_device *pdev)
	255	{
	256	dev_err(&pdev->dev, "Device removal not yet supported\n");
	257	return 0;
	258	}
	259
	260	static struct platform_driver s3c64xx_iis_driver = {
	261	.probe = s3c64xx_iis_dev_probe,
	262	.remove = s3c64xx_iis_dev_remove,
	263	.driver = {
	264	.name = "s3c64xx-iis",
	265	.owner = THIS_MODULE,
	266	},
	267	};
	268
f8cf8176 BD	269	static int __init s3c64xx_i2s_init(void)
f8cf8176 BD	270	{
172fd9e2	271	return platform_driver_register(&s3c64xx_iis_driver);
f8cf8176 BD	272	}
	273	module_init(s3c64xx_i2s_init);
	274
	275	static void __exit s3c64xx_i2s_exit(void)
	276	{
172fd9e2	277	platform_driver_unregister(&s3c64xx_iis_driver);
f8cf8176 BD	278	}
	279	module_exit(s3c64xx_i2s_exit);
	280
	281	/* Module information */
	282	MODULE_AUTHOR("Ben Dooks, <ben@simtec.co.uk>");
	283	MODULE_DESCRIPTION("S3C64XX I2S SoC Interface");
	284	MODULE_LICENSE("GPL");