[deliverable/linux.git] / sound / soc / s3c24xx / smdk64xx_wm8580.c

/*
 *  smdk64xx_wm8580.c
 *
 *  Copyright (c) 2009 Samsung Electronics Co. Ltd
 *  Author: Jaswinder Singh <jassi.brar@samsung.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/platform_device.h>
#include <linux/clk.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/soc.h>
#include <sound/soc-dapm.h>

#include "../codecs/wm8580.h"
#include "s3c-dma.h"
#include "s3c64xx-i2s.h"

/* SMDK64XX has a 12MHZ crystal attached to WM8580 */
#define SMDK64XX_WM8580_FREQ 12000000

static int smdk64xx_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;
	unsigned int pll_out;
	int bfs, rfs, ret;

	switch (params_format(params)) {
	case SNDRV_PCM_FORMAT_U8:
	case SNDRV_PCM_FORMAT_S8:
		bfs = 16;
		break;
	case SNDRV_PCM_FORMAT_U16_LE:
	case SNDRV_PCM_FORMAT_S16_LE:
		bfs = 32;
		break;
	default:
		return -EINVAL;
	}

	/* The Fvco for WM8580 PLLs must fall within [90,100]MHz.
	 * This criterion can't be met if we request PLL output
	 * as {8000x256, 64000x256, 11025x256}Hz.
	 * As a wayout, we rather change rfs to a minimum value that
	 * results in (params_rate(params) * rfs), and itself, acceptable
	 * to both - the CODEC and the CPU.
	 */
	switch (params_rate(params)) {
	case 16000:
	case 22050:
	case 32000:
	case 44100:
	case 48000:
	case 88200:
	case 96000:
		rfs = 256;
		break;
	case 64000:
		rfs = 384;
		break;
	case 8000:
	case 11025:
		rfs = 512;
		break;
	default:
		return -EINVAL;
	}
	pll_out = params_rate(params) * rfs;

	/* Set the Codec DAI configuration */
	ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S
					 | SND_SOC_DAIFMT_NB_NF
					 | SND_SOC_DAIFMT_CBM_CFM);
	if (ret < 0)
		return ret;

	/* Set the AP DAI configuration */
	ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S
					 | SND_SOC_DAIFMT_NB_NF
					 | SND_SOC_DAIFMT_CBM_CFM);
	if (ret < 0)
		return ret;

	ret = snd_soc_dai_set_sysclk(cpu_dai, S3C64XX_CLKSRC_CDCLK,
					0, SND_SOC_CLOCK_IN);
	if (ret < 0)
		return ret;

	/* We use PCLK for basic ops in SoC-Slave mode */
	ret = snd_soc_dai_set_sysclk(cpu_dai, S3C64XX_CLKSRC_PCLK,
					0, SND_SOC_CLOCK_IN);
	if (ret < 0)
		return ret;

	/* Set WM8580 to drive MCLK from its PLLA */
	ret = snd_soc_dai_set_clkdiv(codec_dai, WM8580_MCLK,
					WM8580_CLKSRC_PLLA);
	if (ret < 0)
		return ret;

	/* Explicitly set WM8580-DAC to source from MCLK */
	ret = snd_soc_dai_set_clkdiv(codec_dai, WM8580_DAC_CLKSEL,
					WM8580_CLKSRC_MCLK);
	if (ret < 0)
		return ret;

	ret = snd_soc_dai_set_pll(codec_dai, WM8580_PLLA, 0,
					SMDK64XX_WM8580_FREQ, pll_out);
	if (ret < 0)
		return ret;

	ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C_I2SV2_DIV_BCLK, bfs);
	if (ret < 0)
		return ret;

	ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C_I2SV2_DIV_RCLK, rfs);
	if (ret < 0)
		return ret;

	return 0;
}

/*
 * SMDK64XX WM8580 DAI operations.
 */
static struct snd_soc_ops smdk64xx_ops = {
	.hw_params = smdk64xx_hw_params,
};

/* SMDK64xx Playback widgets */
static const struct snd_soc_dapm_widget wm8580_dapm_widgets_pbk[] = {
	SND_SOC_DAPM_HP("Front-L/R", NULL),
	SND_SOC_DAPM_HP("Center/Sub", NULL),
	SND_SOC_DAPM_HP("Rear-L/R", NULL),
};

/* SMDK64xx Capture widgets */
static const struct snd_soc_dapm_widget wm8580_dapm_widgets_cpt[] = {
	SND_SOC_DAPM_MIC("MicIn", NULL),
	SND_SOC_DAPM_LINE("LineIn", NULL),
};

/* SMDK-PAIFTX connections */
static const struct snd_soc_dapm_route audio_map_tx[] = {
	/* MicIn feeds AINL */
	{"AINL", NULL, "MicIn"},

	/* LineIn feeds AINL/R */
	{"AINL", NULL, "LineIn"},
	{"AINR", NULL, "LineIn"},
};

/* SMDK-PAIFRX connections */
static const struct snd_soc_dapm_route audio_map_rx[] = {
	/* Front Left/Right are fed VOUT1L/R */
	{"Front-L/R", NULL, "VOUT1L"},
	{"Front-L/R", NULL, "VOUT1R"},

	/* Center/Sub are fed VOUT2L/R */
	{"Center/Sub", NULL, "VOUT2L"},
	{"Center/Sub", NULL, "VOUT2R"},

	/* Rear Left/Right are fed VOUT3L/R */
	{"Rear-L/R", NULL, "VOUT3L"},
	{"Rear-L/R", NULL, "VOUT3R"},
};

static int smdk64xx_wm8580_init_paiftx(struct snd_soc_pcm_runtime *rtd)
{
	struct snd_soc_codec *codec = rtd->codec;

	/* Add smdk64xx specific Capture widgets */
	snd_soc_dapm_new_controls(codec, wm8580_dapm_widgets_cpt,
				  ARRAY_SIZE(wm8580_dapm_widgets_cpt));

	/* Set up PAIFTX audio path */
	snd_soc_dapm_add_routes(codec, audio_map_tx, ARRAY_SIZE(audio_map_tx));

	/* Enabling the microphone requires the fitting of a 0R
	 * resistor to connect the line from the microphone jack.
	 */
	snd_soc_dapm_disable_pin(codec, "MicIn");

	/* signal a DAPM event */
	snd_soc_dapm_sync(codec);

	return 0;
}

static int smdk64xx_wm8580_init_paifrx(struct snd_soc_pcm_runtime *rtd)
{
	struct snd_soc_codec *codec = rtd->codec;

	/* Add smdk64xx specific Playback widgets */
	snd_soc_dapm_new_controls(codec, wm8580_dapm_widgets_pbk,
				  ARRAY_SIZE(wm8580_dapm_widgets_pbk));

	/* Set up PAIFRX audio path */
	snd_soc_dapm_add_routes(codec, audio_map_rx, ARRAY_SIZE(audio_map_rx));

	/* signal a DAPM event */
	snd_soc_dapm_sync(codec);

	return 0;
}

static struct snd_soc_dai_link smdk64xx_dai[] = {
{ /* Primary Playback i/f */
	.name = "WM8580 PAIF RX",
	.stream_name = "Playback",
	.cpu_dai_name = "s3c64xx-iis-v4",
	.codec_dai_name = "wm8580-hifi-playback",
	.platform_name = "s3c24xx-pcm-audio",
	.codec_name = "wm8580-codec.0-001b",
	.init = smdk64xx_wm8580_init_paifrx,
	.ops = &smdk64xx_ops,
},
{ /* Primary Capture i/f */
	.name = "WM8580 PAIF TX",
	.stream_name = "Capture",
	.cpu_dai_name = "s3c64xx-iis-v4",
	.codec_dai_name = "wm8580-hifi-capture",
	.platform_name = "s3c24xx-pcm-audio",
	.codec_name = "wm8580-codec.0-001b",
	.init = smdk64xx_wm8580_init_paiftx,
	.ops = &smdk64xx_ops,
},
};

static struct snd_soc_card smdk64xx = {
	.name = "smdk64xx",
	.dai_link = smdk64xx_dai,
	.num_links = ARRAY_SIZE(smdk64xx_dai),
};

static struct platform_device *smdk64xx_snd_device;

static int __init smdk64xx_audio_init(void)
{
	int ret;

	smdk64xx_snd_device = platform_device_alloc("soc-audio", -1);
	if (!smdk64xx_snd_device)
		return -ENOMEM;

	platform_set_drvdata(smdk64xx_snd_device, &smdk64xx);
	ret = platform_device_add(smdk64xx_snd_device);

	if (ret)
		platform_device_put(smdk64xx_snd_device);

	return ret;
}
module_init(smdk64xx_audio_init);

MODULE_AUTHOR("Jaswinder Singh, jassi.brar@samsung.com");
MODULE_DESCRIPTION("ALSA SoC SMDK64XX WM8580");
MODULE_LICENSE("GPL");
Commit	Line	Data
d0f5fa17	1	/*
	2	* smdk64xx_wm8580.c
	3	*
	4	* Copyright (c) 2009 Samsung Electronics Co. Ltd
	5	* Author: Jaswinder Singh <jassi.brar@samsung.com>
	6	*
	7	* This program is free software; you can redistribute it and/or modify it
	8	* under the terms of the GNU General Public License as published by the
	9	* Free Software Foundation; either version 2 of the License, or (at your
	10	* option) any later version.
	11	*/
	12
	13	#include <linux/platform_device.h>
	14	#include <linux/clk.h>
	15	#include <sound/core.h>
	16	#include <sound/pcm.h>
	17	#include <sound/pcm_params.h>
	18	#include <sound/soc.h>
	19	#include <sound/soc-dapm.h>
	20
	21	#include "../codecs/wm8580.h"
d3ff5a3e	22	#include "s3c-dma.h"
d0f5fa17	23	#include "s3c64xx-i2s.h"
d0f5fa17	24
d0f5fa17	25	/* SMDK64XX has a 12MHZ crystal attached to WM8580 */
	26	#define SMDK64XX_WM8580_FREQ 12000000
	27
	28	static int smdk64xx_hw_params(struct snd_pcm_substream *substream,
	29	struct snd_pcm_hw_params *params)
	30	{
	31	struct snd_soc_pcm_runtime *rtd = substream->private_data;
f0fba2ad LG	32	struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
f0fba2ad LG	33	struct snd_soc_dai *codec_dai = rtd->codec_dai;
d0f5fa17	34	unsigned int pll_out;
	35	int bfs, rfs, ret;
	36
	37	switch (params_format(params)) {
	38	case SNDRV_PCM_FORMAT_U8:
	39	case SNDRV_PCM_FORMAT_S8:
	40	bfs = 16;
	41	break;
	42	case SNDRV_PCM_FORMAT_U16_LE:
	43	case SNDRV_PCM_FORMAT_S16_LE:
	44	bfs = 32;
	45	break;
	46	default:
	47	return -EINVAL;
	48	}
	49
	50	/* The Fvco for WM8580 PLLs must fall within [90,100]MHz.
	51	* This criterion can't be met if we request PLL output
	52	* as {8000x256, 64000x256, 11025x256}Hz.
	53	* As a wayout, we rather change rfs to a minimum value that
	54	* results in (params_rate(params) * rfs), and itself, acceptable
	55	* to both - the CODEC and the CPU.
	56	*/
	57	switch (params_rate(params)) {
	58	case 16000:
	59	case 22050:
	60	case 32000:
	61	case 44100:
	62	case 48000:
	63	case 88200:
	64	case 96000:
	65	rfs = 256;
	66	break;
	67	case 64000:
	68	rfs = 384;
	69	break;
	70	case 8000:
	71	case 11025:
	72	rfs = 512;
	73	break;
	74	default:
	75	return -EINVAL;
	76	}
	77	pll_out = params_rate(params) * rfs;
	78
	79	/* Set the Codec DAI configuration */
	80	ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S
	81	\| SND_SOC_DAIFMT_NB_NF
	82	\| SND_SOC_DAIFMT_CBM_CFM);
	83	if (ret < 0)
	84	return ret;
	85
	86	/* Set the AP DAI configuration */
	87	ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S
	88	\| SND_SOC_DAIFMT_NB_NF
	89	\| SND_SOC_DAIFMT_CBM_CFM);
	90	if (ret < 0)
	91	return ret;
	92
	93	ret = snd_soc_dai_set_sysclk(cpu_dai, S3C64XX_CLKSRC_CDCLK,
	94	0, SND_SOC_CLOCK_IN);
	95	if (ret < 0)
	96	return ret;
	97
98	/* We use PCLK for basic ops in SoC-Slave mode */
99	ret = snd_soc_dai_set_sysclk(cpu_dai, S3C64XX_CLKSRC_PCLK,
100	0, SND_SOC_CLOCK_IN);
101	if (ret < 0)
102	return ret;
103
26d95b6e	104	/* Set WM8580 to drive MCLK from its PLLA */
d0f5fa17	105	ret = snd_soc_dai_set_clkdiv(codec_dai, WM8580_MCLK,
	106	WM8580_CLKSRC_PLLA);
	107	if (ret < 0)
	108	return ret;
	109
	110	/* Explicitly set WM8580-DAC to source from MCLK */
	111	ret = snd_soc_dai_set_clkdiv(codec_dai, WM8580_DAC_CLKSEL,
	112	WM8580_CLKSRC_MCLK);
	113	if (ret < 0)
	114	return ret;
	115
ba2b87f5	116	ret = snd_soc_dai_set_pll(codec_dai, WM8580_PLLA, 0,
d0f5fa17	117	SMDK64XX_WM8580_FREQ, pll_out);
	118	if (ret < 0)
	119	return ret;
	120
	121	ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C_I2SV2_DIV_BCLK, bfs);
	122	if (ret < 0)
	123	return ret;
	124
	125	ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C_I2SV2_DIV_RCLK, rfs);
	126	if (ret < 0)
	127	return ret;
	128
	129	return 0;
	130	}
	131
	132	/*
	133	* SMDK64XX WM8580 DAI operations.
	134	*/
	135	static struct snd_soc_ops smdk64xx_ops = {
	136	.hw_params = smdk64xx_hw_params,
	137	};
	138
	139	/* SMDK64xx Playback widgets */
	140	static const struct snd_soc_dapm_widget wm8580_dapm_widgets_pbk[] = {
	141	SND_SOC_DAPM_HP("Front-L/R", NULL),
	142	SND_SOC_DAPM_HP("Center/Sub", NULL),
	143	SND_SOC_DAPM_HP("Rear-L/R", NULL),
	144	};
	145
	146	/* SMDK64xx Capture widgets */
	147	static const struct snd_soc_dapm_widget wm8580_dapm_widgets_cpt[] = {
	148	SND_SOC_DAPM_MIC("MicIn", NULL),
	149	SND_SOC_DAPM_LINE("LineIn", NULL),
	150	};
	151
	152	/* SMDK-PAIFTX connections */
	153	static const struct snd_soc_dapm_route audio_map_tx[] = {
	154	/* MicIn feeds AINL */
	155	{"AINL", NULL, "MicIn"},
	156
	157	/* LineIn feeds AINL/R */
	158	{"AINL", NULL, "LineIn"},
	159	{"AINR", NULL, "LineIn"},
	160	};
	161
	162	/* SMDK-PAIFRX connections */
	163	static const struct snd_soc_dapm_route audio_map_rx[] = {
	164	/* Front Left/Right are fed VOUT1L/R */
	165	{"Front-L/R", NULL, "VOUT1L"},
	166	{"Front-L/R", NULL, "VOUT1R"},
	167
	168	/* Center/Sub are fed VOUT2L/R */
	169	{"Center/Sub", NULL, "VOUT2L"},
	170	{"Center/Sub", NULL, "VOUT2R"},
	171
	172	/* Rear Left/Right are fed VOUT3L/R */
	173	{"Rear-L/R", NULL, "VOUT3L"},
	174	{"Rear-L/R", NULL, "VOUT3R"},
	175	};
	176
f0fba2ad	177	static int smdk64xx_wm8580_init_paiftx(struct snd_soc_pcm_runtime *rtd)
d0f5fa17	178	{
f0fba2ad LG	179	struct snd_soc_codec *codec = rtd->codec;
f0fba2ad LG	180
d0f5fa17	181	/* Add smdk64xx specific Capture widgets */
	182	snd_soc_dapm_new_controls(codec, wm8580_dapm_widgets_cpt,
	183	ARRAY_SIZE(wm8580_dapm_widgets_cpt));
	184
	185	/* Set up PAIFTX audio path */
	186	snd_soc_dapm_add_routes(codec, audio_map_tx, ARRAY_SIZE(audio_map_tx));
	187
26d95b6e MB	188	/* Enabling the microphone requires the fitting of a 0R
	189	* resistor to connect the line from the microphone jack.
	190	*/
	191	snd_soc_dapm_disable_pin(codec, "MicIn");
d0f5fa17	192
	193	/* signal a DAPM event */
	194	snd_soc_dapm_sync(codec);
	195
	196	return 0;
	197	}
	198
f0fba2ad	199	static int smdk64xx_wm8580_init_paifrx(struct snd_soc_pcm_runtime *rtd)
d0f5fa17	200	{
f0fba2ad LG	201	struct snd_soc_codec *codec = rtd->codec;
f0fba2ad LG	202
d0f5fa17	203	/* Add smdk64xx specific Playback widgets */
	204	snd_soc_dapm_new_controls(codec, wm8580_dapm_widgets_pbk,
	205	ARRAY_SIZE(wm8580_dapm_widgets_pbk));
	206
	207	/* Set up PAIFRX audio path */
	208	snd_soc_dapm_add_routes(codec, audio_map_rx, ARRAY_SIZE(audio_map_rx));
	209
d0f5fa17	210	/* signal a DAPM event */
	211	snd_soc_dapm_sync(codec);
	212
	213	return 0;
	214	}
	215
	216	static struct snd_soc_dai_link smdk64xx_dai[] = {
	217	{ /* Primary Playback i/f */
	218	.name = "WM8580 PAIF RX",
	219	.stream_name = "Playback",
f0fba2ad LG	220	.cpu_dai_name = "s3c64xx-iis-v4",
	221	.codec_dai_name = "wm8580-hifi-playback",
	222	.platform_name = "s3c24xx-pcm-audio",
	223	.codec_name = "wm8580-codec.0-001b",
d0f5fa17	224	.init = smdk64xx_wm8580_init_paifrx,
	225	.ops = &smdk64xx_ops,
	226	},
	227	{ /* Primary Capture i/f */
	228	.name = "WM8580 PAIF TX",
	229	.stream_name = "Capture",
f0fba2ad LG	230	.cpu_dai_name = "s3c64xx-iis-v4",
	231	.codec_dai_name = "wm8580-hifi-capture",
	232	.platform_name = "s3c24xx-pcm-audio",
	233	.codec_name = "wm8580-codec.0-001b",
d0f5fa17	234	.init = smdk64xx_wm8580_init_paiftx,
	235	.ops = &smdk64xx_ops,
	236	},
	237	};
	238
	239	static struct snd_soc_card smdk64xx = {
	240	.name = "smdk64xx",
d0f5fa17	241	.dai_link = smdk64xx_dai,
	242	.num_links = ARRAY_SIZE(smdk64xx_dai),
	243	};
	244
d0f5fa17	245	static struct platform_device *smdk64xx_snd_device;
	246
	247	static int __init smdk64xx_audio_init(void)
	248	{
	249	int ret;
	250
	251	smdk64xx_snd_device = platform_device_alloc("soc-audio", -1);
	252	if (!smdk64xx_snd_device)
	253	return -ENOMEM;
	254
f0fba2ad	255	platform_set_drvdata(smdk64xx_snd_device, &smdk64xx);
d0f5fa17	256	ret = platform_device_add(smdk64xx_snd_device);
	257
	258	if (ret)
	259	platform_device_put(smdk64xx_snd_device);
	260
	261	return ret;
	262	}
	263	module_init(smdk64xx_audio_init);
	264
	265	MODULE_AUTHOR("Jaswinder Singh, jassi.brar@samsung.com");
	266	MODULE_DESCRIPTION("ALSA SoC SMDK64XX WM8580");
	267	MODULE_LICENSE("GPL");