[deliverable/linux.git] / sound / soc / samsung / smdk_wm8580.c

/*
 *  smdk_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 <sound/soc.h>
#include <sound/pcm_params.h>

#include <asm/mach-types.h>

#include "../codecs/wm8580.h"
#include "i2s.h"

/*
 * Default CFG switch settings to use this driver:
 *
 *   SMDK6410: Set CFG1 1-3 Off, CFG2 1-4 On
 */

/* SMDK has a 12MHZ crystal attached to WM8580 */
#define SMDK_WM8580_FREQ 12000000

static int smdk_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;

	/* 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;

	ret = snd_soc_dai_set_pll(codec_dai, WM8580_PLLA, 0,
					SMDK_WM8580_FREQ, pll_out);
	if (ret < 0)
		return ret;

	ret = snd_soc_dai_set_sysclk(codec_dai, WM8580_CLKSRC_PLLA,
				     pll_out, SND_SOC_CLOCK_IN);
	if (ret < 0)
		return ret;

	return 0;
}

/*
 * SMDK WM8580 DAI operations.
 */
static struct snd_soc_ops smdk_ops = {
	.hw_params = smdk_hw_params,
};

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

/* SMDK 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", NULL, "VOUT1L"},
	{"Front", NULL, "VOUT1R"},

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

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

static int smdk_wm8580_init_paiftx(struct snd_soc_pcm_runtime *rtd)
{
	struct snd_soc_codec *codec = rtd->codec;
	struct snd_soc_dapm_context *dapm = &codec->dapm;

	/* Add smdk specific Capture widgets */
	snd_soc_dapm_new_controls(dapm, wm8580_dapm_widgets_cpt,
				  ARRAY_SIZE(wm8580_dapm_widgets_cpt));

	/* Set up PAIFTX audio path */
	snd_soc_dapm_add_routes(dapm, 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(dapm, "MicIn");

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

	return 0;
}

static int smdk_wm8580_init_paifrx(struct snd_soc_pcm_runtime *rtd)
{
	struct snd_soc_codec *codec = rtd->codec;
	struct snd_soc_dapm_context *dapm = &codec->dapm;

	/* Add smdk specific Playback widgets */
	snd_soc_dapm_new_controls(dapm, wm8580_dapm_widgets_pbk,
				  ARRAY_SIZE(wm8580_dapm_widgets_pbk));

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

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

	return 0;
}

enum {
	PRI_PLAYBACK = 0,
	PRI_CAPTURE,
	SEC_PLAYBACK,
};

static struct snd_soc_dai_link smdk_dai[] = {
	[PRI_PLAYBACK] = { /* Primary Playback i/f */
		.name = "WM8580 PAIF RX",
		.stream_name = "Playback",
		.cpu_dai_name = "samsung-i2s.0",
		.codec_dai_name = "wm8580-hifi-playback",
		.platform_name = "samsung-audio",
		.codec_name = "wm8580-codec.0-001b",
		.init = smdk_wm8580_init_paifrx,
		.ops = &smdk_ops,
	},
	[PRI_CAPTURE] = { /* Primary Capture i/f */
		.name = "WM8580 PAIF TX",
		.stream_name = "Capture",
		.cpu_dai_name = "samsung-i2s.0",
		.codec_dai_name = "wm8580-hifi-capture",
		.platform_name = "samsung-audio",
		.codec_name = "wm8580-codec.0-001b",
		.init = smdk_wm8580_init_paiftx,
		.ops = &smdk_ops,
	},
	[SEC_PLAYBACK] = { /* Sec_Fifo Playback i/f */
		.name = "Sec_FIFO TX",
		.stream_name = "Playback",
		.cpu_dai_name = "samsung-i2s.x",
		.codec_dai_name = "wm8580-hifi-playback",
		.platform_name = "samsung-audio",
		.codec_name = "wm8580-codec.0-001b",
		.init = smdk_wm8580_init_paifrx,
		.ops = &smdk_ops,
	},
};

static struct snd_soc_card smdk = {
	.name = "SMDK-I2S",
	.dai_link = smdk_dai,
	.num_links = 2,
};

static struct platform_device *smdk_snd_device;

static int __init smdk_audio_init(void)
{
	int ret;
	char *str;

	if (machine_is_smdkc100() || machine_is_smdk6442()
			|| machine_is_smdkv210() || machine_is_smdkc110()) {
		smdk.num_links = 3;
		/* Secondary is at offset SAMSUNG_I2S_SECOFF from Primary */
		str = (char *)smdk_dai[SEC_PLAYBACK].cpu_dai_name;
		str[strlen(str) - 1] = '0' + SAMSUNG_I2S_SECOFF;
	} else if (machine_is_smdk6410()) {
		str = (char *)smdk_dai[PRI_PLAYBACK].cpu_dai_name;
		str[strlen(str) - 1] = '2';
		str = (char *)smdk_dai[PRI_CAPTURE].cpu_dai_name;
		str[strlen(str) - 1] = '2';
	}

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

	platform_set_drvdata(smdk_snd_device, &smdk);
	ret = platform_device_add(smdk_snd_device);

	if (ret)
		platform_device_put(smdk_snd_device);

	return ret;
}
module_init(smdk_audio_init);

static void __exit smdk_audio_exit(void)
{
	platform_device_unregister(smdk_snd_device);
}
module_exit(smdk_audio_exit);

MODULE_AUTHOR("Jaswinder Singh, jassi.brar@samsung.com");
MODULE_DESCRIPTION("ALSA SoC SMDK WM8580");
MODULE_LICENSE("GPL");
Commit	Line	Data
	1	/*
	2	* smdk_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 <sound/soc.h>
	14	#include <sound/pcm_params.h>
	15
	16	#include <asm/mach-types.h>
	17
	18	#include "../codecs/wm8580.h"
	19	#include "i2s.h"
	20
	21	/*
	22	* Default CFG switch settings to use this driver:
	23	*
	24	* SMDK6410: Set CFG1 1-3 Off, CFG2 1-4 On
	25	*/
	26
	27	/* SMDK has a 12MHZ crystal attached to WM8580 */
	28	#define SMDK_WM8580_FREQ 12000000
	29
	30	static int smdk_hw_params(struct snd_pcm_substream *substream,
	31	struct snd_pcm_hw_params *params)
	32	{
	33	struct snd_soc_pcm_runtime *rtd = substream->private_data;
	34	struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
	35	struct snd_soc_dai *codec_dai = rtd->codec_dai;
	36	unsigned int pll_out;
	37	int bfs, rfs, ret;
	38
	39	switch (params_format(params)) {
	40	case SNDRV_PCM_FORMAT_U8:
	41	case SNDRV_PCM_FORMAT_S8:
	42	bfs = 16;
	43	break;
	44	case SNDRV_PCM_FORMAT_U16_LE:
	45	case SNDRV_PCM_FORMAT_S16_LE:
	46	bfs = 32;
	47	break;
	48	default:
	49	return -EINVAL;
	50	}
	51
	52	/* The Fvco for WM8580 PLLs must fall within [90,100]MHz.
	53	* This criterion can't be met if we request PLL output
	54	* as {8000x256, 64000x256, 11025x256}Hz.
	55	* As a wayout, we rather change rfs to a minimum value that
	56	* results in (params_rate(params) * rfs), and itself, acceptable
	57	* to both - the CODEC and the CPU.
	58	*/
	59	switch (params_rate(params)) {
	60	case 16000:
	61	case 22050:
	62	case 32000:
	63	case 44100:
	64	case 48000:
	65	case 88200:
	66	case 96000:
	67	rfs = 256;
	68	break;
	69	case 64000:
	70	rfs = 384;
	71	break;
	72	case 8000:
	73	case 11025:
	74	rfs = 512;
	75	break;
	76	default:
	77	return -EINVAL;
	78	}
	79	pll_out = params_rate(params) * rfs;
	80
	81	/* Set the Codec DAI configuration */
	82	ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S
	83	\| SND_SOC_DAIFMT_NB_NF
	84	\| SND_SOC_DAIFMT_CBM_CFM);
	85	if (ret < 0)
	86	return ret;
	87
	88	/* Set the AP DAI configuration */
	89	ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S
	90	\| SND_SOC_DAIFMT_NB_NF
	91	\| SND_SOC_DAIFMT_CBM_CFM);
	92	if (ret < 0)
	93	return ret;
	94
	95	/* Set WM8580 to drive MCLK from its PLLA */
	96	ret = snd_soc_dai_set_clkdiv(codec_dai, WM8580_MCLK,
	97	WM8580_CLKSRC_PLLA);
	98	if (ret < 0)
	99	return ret;
	100
	101	ret = snd_soc_dai_set_pll(codec_dai, WM8580_PLLA, 0,
	102	SMDK_WM8580_FREQ, pll_out);
	103	if (ret < 0)
	104	return ret;
	105
	106	ret = snd_soc_dai_set_sysclk(codec_dai, WM8580_CLKSRC_PLLA,
	107	pll_out, SND_SOC_CLOCK_IN);
	108	if (ret < 0)
	109	return ret;
	110
	111	return 0;
	112	}
	113
	114	/*
	115	* SMDK WM8580 DAI operations.
	116	*/
	117	static struct snd_soc_ops smdk_ops = {
	118	.hw_params = smdk_hw_params,
	119	};
	120
	121	/* SMDK Playback widgets */
	122	static const struct snd_soc_dapm_widget wm8580_dapm_widgets_pbk[] = {
	123	SND_SOC_DAPM_HP("Front", NULL),
	124	SND_SOC_DAPM_HP("Center+Sub", NULL),
	125	SND_SOC_DAPM_HP("Rear", NULL),
	126	};
	127
	128	/* SMDK Capture widgets */
	129	static const struct snd_soc_dapm_widget wm8580_dapm_widgets_cpt[] = {
	130	SND_SOC_DAPM_MIC("MicIn", NULL),
	131	SND_SOC_DAPM_LINE("LineIn", NULL),
	132	};
	133
	134	/* SMDK-PAIFTX connections */
	135	static const struct snd_soc_dapm_route audio_map_tx[] = {
	136	/* MicIn feeds AINL */
	137	{"AINL", NULL, "MicIn"},
	138
	139	/* LineIn feeds AINL/R */
	140	{"AINL", NULL, "LineIn"},
	141	{"AINR", NULL, "LineIn"},
	142	};
	143
	144	/* SMDK-PAIFRX connections */
	145	static const struct snd_soc_dapm_route audio_map_rx[] = {
	146	/* Front Left/Right are fed VOUT1L/R */
	147	{"Front", NULL, "VOUT1L"},
	148	{"Front", NULL, "VOUT1R"},
	149
	150	/* Center/Sub are fed VOUT2L/R */
	151	{"Center+Sub", NULL, "VOUT2L"},
	152	{"Center+Sub", NULL, "VOUT2R"},
	153
	154	/* Rear Left/Right are fed VOUT3L/R */
	155	{"Rear", NULL, "VOUT3L"},
	156	{"Rear", NULL, "VOUT3R"},
	157	};
	158
	159	static int smdk_wm8580_init_paiftx(struct snd_soc_pcm_runtime *rtd)
	160	{
	161	struct snd_soc_codec *codec = rtd->codec;
	162	struct snd_soc_dapm_context *dapm = &codec->dapm;
	163
	164	/* Add smdk specific Capture widgets */
	165	snd_soc_dapm_new_controls(dapm, wm8580_dapm_widgets_cpt,
	166	ARRAY_SIZE(wm8580_dapm_widgets_cpt));
	167
	168	/* Set up PAIFTX audio path */
	169	snd_soc_dapm_add_routes(dapm, audio_map_tx, ARRAY_SIZE(audio_map_tx));
	170
	171	/* Enabling the microphone requires the fitting of a 0R
	172	* resistor to connect the line from the microphone jack.
	173	*/
	174	snd_soc_dapm_disable_pin(dapm, "MicIn");
	175
	176	/* signal a DAPM event */
	177	snd_soc_dapm_sync(dapm);
	178
	179	return 0;
	180	}
	181
	182	static int smdk_wm8580_init_paifrx(struct snd_soc_pcm_runtime *rtd)
	183	{
	184	struct snd_soc_codec *codec = rtd->codec;
	185	struct snd_soc_dapm_context *dapm = &codec->dapm;
	186
	187	/* Add smdk specific Playback widgets */
	188	snd_soc_dapm_new_controls(dapm, wm8580_dapm_widgets_pbk,
	189	ARRAY_SIZE(wm8580_dapm_widgets_pbk));
	190
	191	/* Set up PAIFRX audio path */
	192	snd_soc_dapm_add_routes(dapm, audio_map_rx, ARRAY_SIZE(audio_map_rx));
	193
	194	/* signal a DAPM event */
	195	snd_soc_dapm_sync(dapm);
	196
	197	return 0;
	198	}
	199
	200	enum {
	201	PRI_PLAYBACK = 0,
	202	PRI_CAPTURE,
	203	SEC_PLAYBACK,
	204	};
	205
	206	static struct snd_soc_dai_link smdk_dai[] = {
	207	[PRI_PLAYBACK] = { /* Primary Playback i/f */
	208	.name = "WM8580 PAIF RX",
	209	.stream_name = "Playback",
	210	.cpu_dai_name = "samsung-i2s.0",
	211	.codec_dai_name = "wm8580-hifi-playback",
	212	.platform_name = "samsung-audio",
	213	.codec_name = "wm8580-codec.0-001b",
	214	.init = smdk_wm8580_init_paifrx,
	215	.ops = &smdk_ops,
	216	},
	217	[PRI_CAPTURE] = { /* Primary Capture i/f */
	218	.name = "WM8580 PAIF TX",
	219	.stream_name = "Capture",
	220	.cpu_dai_name = "samsung-i2s.0",
	221	.codec_dai_name = "wm8580-hifi-capture",
	222	.platform_name = "samsung-audio",
	223	.codec_name = "wm8580-codec.0-001b",
	224	.init = smdk_wm8580_init_paiftx,
	225	.ops = &smdk_ops,
	226	},
	227	[SEC_PLAYBACK] = { /* Sec_Fifo Playback i/f */
	228	.name = "Sec_FIFO TX",
	229	.stream_name = "Playback",
	230	.cpu_dai_name = "samsung-i2s.x",
	231	.codec_dai_name = "wm8580-hifi-playback",
	232	.platform_name = "samsung-audio",
	233	.codec_name = "wm8580-codec.0-001b",
	234	.init = smdk_wm8580_init_paifrx,
	235	.ops = &smdk_ops,
	236	},
	237	};
	238
	239	static struct snd_soc_card smdk = {
	240	.name = "SMDK-I2S",
	241	.dai_link = smdk_dai,
	242	.num_links = 2,
	243	};
	244
	245	static struct platform_device *smdk_snd_device;
	246
	247	static int __init smdk_audio_init(void)
	248	{
	249	int ret;
	250	char *str;
	251
	252	if (machine_is_smdkc100() \|\| machine_is_smdk6442()
	253	\|\| machine_is_smdkv210() \|\| machine_is_smdkc110()) {
	254	smdk.num_links = 3;
	255	/* Secondary is at offset SAMSUNG_I2S_SECOFF from Primary */
	256	str = (char *)smdk_dai[SEC_PLAYBACK].cpu_dai_name;
	257	str[strlen(str) - 1] = '0' + SAMSUNG_I2S_SECOFF;
	258	} else if (machine_is_smdk6410()) {
	259	str = (char *)smdk_dai[PRI_PLAYBACK].cpu_dai_name;
	260	str[strlen(str) - 1] = '2';
	261	str = (char *)smdk_dai[PRI_CAPTURE].cpu_dai_name;
	262	str[strlen(str) - 1] = '2';
	263	}
	264
	265	smdk_snd_device = platform_device_alloc("soc-audio", -1);
	266	if (!smdk_snd_device)
	267	return -ENOMEM;
	268
	269	platform_set_drvdata(smdk_snd_device, &smdk);
	270	ret = platform_device_add(smdk_snd_device);
	271
	272	if (ret)
	273	platform_device_put(smdk_snd_device);
	274
	275	return ret;
	276	}
	277	module_init(smdk_audio_init);
	278
	279	static void __exit smdk_audio_exit(void)
	280	{
	281	platform_device_unregister(smdk_snd_device);
	282	}
	283	module_exit(smdk_audio_exit);
	284
	285	MODULE_AUTHOR("Jaswinder Singh, jassi.brar@samsung.com");
	286	MODULE_DESCRIPTION("ALSA SoC SMDK WM8580");
	287	MODULE_LICENSE("GPL");