[linux-2.6-block.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 <linux/module.h>
#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 smdk_wm8580_dapm_widgets[] = {
	SND_SOC_DAPM_HP("Front", NULL),
	SND_SOC_DAPM_HP("Center+Sub", NULL),
	SND_SOC_DAPM_HP("Rear", NULL),

	SND_SOC_DAPM_MIC("MicIn", NULL),
	SND_SOC_DAPM_LINE("LineIn", NULL),
};

/* SMDK-PAIFTX connections */
static const struct snd_soc_dapm_route smdk_wm8580_audio_map[] = {
	/* MicIn feeds AINL */
	{"AINL", NULL, "MicIn"},

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

	/* 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;

	/* 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");

	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 = "wm8580.0-001b",
		.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 = "wm8580.0-001b",
		.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 = "wm8580.0-001b",
		.ops = &smdk_ops,
	},
};

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

	.dapm_widgets = smdk_wm8580_dapm_widgets,
	.num_dapm_widgets = ARRAY_SIZE(smdk_wm8580_dapm_widgets),
	.dapm_routes = smdk_wm8580_audio_map,
	.num_dapm_routes = ARRAY_SIZE(smdk_wm8580_audio_map),
};

static struct platform_device *smdk_snd_device;

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

	if (machine_is_smdkc100()
			|| 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 <linux/module.h>
	14	#include <sound/soc.h>
	15	#include <sound/pcm_params.h>
	16
	17	#include <asm/mach-types.h>
	18
	19	#include "../codecs/wm8580.h"
	20	#include "i2s.h"
	21
	22	/*
	23	* Default CFG switch settings to use this driver:
	24	*
	25	* SMDK6410: Set CFG1 1-3 Off, CFG2 1-4 On
	26	*/
	27
	28	/* SMDK has a 12MHZ crystal attached to WM8580 */
	29	#define SMDK_WM8580_FREQ 12000000
	30
	31	static int smdk_hw_params(struct snd_pcm_substream *substream,
	32	struct snd_pcm_hw_params *params)
	33	{
	34	struct snd_soc_pcm_runtime *rtd = substream->private_data;
	35	struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
	36	struct snd_soc_dai *codec_dai = rtd->codec_dai;
	37	unsigned int pll_out;
	38	int bfs, rfs, ret;
	39
	40	switch (params_format(params)) {
	41	case SNDRV_PCM_FORMAT_U8:
	42	case SNDRV_PCM_FORMAT_S8:
	43	bfs = 16;
	44	break;
	45	case SNDRV_PCM_FORMAT_U16_LE:
	46	case SNDRV_PCM_FORMAT_S16_LE:
	47	bfs = 32;
	48	break;
	49	default:
	50	return -EINVAL;
	51	}
	52
	53	/* The Fvco for WM8580 PLLs must fall within [90,100]MHz.
	54	* This criterion can't be met if we request PLL output
	55	* as {8000x256, 64000x256, 11025x256}Hz.
	56	* As a wayout, we rather change rfs to a minimum value that
	57	* results in (params_rate(params) * rfs), and itself, acceptable
	58	* to both - the CODEC and the CPU.
	59	*/
	60	switch (params_rate(params)) {
	61	case 16000:
	62	case 22050:
	63	case 32000:
	64	case 44100:
	65	case 48000:
	66	case 88200:
	67	case 96000:
	68	rfs = 256;
	69	break;
	70	case 64000:
	71	rfs = 384;
	72	break;
	73	case 8000:
	74	case 11025:
	75	rfs = 512;
	76	break;
	77	default:
	78	return -EINVAL;
	79	}
	80	pll_out = params_rate(params) * rfs;
	81
	82	/* Set the Codec DAI configuration */
	83	ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S
	84	\| SND_SOC_DAIFMT_NB_NF
	85	\| SND_SOC_DAIFMT_CBM_CFM);
	86	if (ret < 0)
	87	return ret;
	88
	89	/* Set the AP DAI configuration */
	90	ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S
	91	\| SND_SOC_DAIFMT_NB_NF
	92	\| SND_SOC_DAIFMT_CBM_CFM);
	93	if (ret < 0)
	94	return ret;
	95
	96	/* Set WM8580 to drive MCLK from its PLLA */
	97	ret = snd_soc_dai_set_clkdiv(codec_dai, WM8580_MCLK,
	98	WM8580_CLKSRC_PLLA);
	99	if (ret < 0)
	100	return ret;
	101
	102	ret = snd_soc_dai_set_pll(codec_dai, WM8580_PLLA, 0,
	103	SMDK_WM8580_FREQ, pll_out);
	104	if (ret < 0)
	105	return ret;
	106
	107	ret = snd_soc_dai_set_sysclk(codec_dai, WM8580_CLKSRC_PLLA,
	108	pll_out, SND_SOC_CLOCK_IN);
	109	if (ret < 0)
	110	return ret;
	111
	112	return 0;
	113	}
	114
	115	/*
	116	* SMDK WM8580 DAI operations.
	117	*/
	118	static struct snd_soc_ops smdk_ops = {
	119	.hw_params = smdk_hw_params,
	120	};
	121
	122	/* SMDK Playback widgets */
	123	static const struct snd_soc_dapm_widget smdk_wm8580_dapm_widgets[] = {
	124	SND_SOC_DAPM_HP("Front", NULL),
	125	SND_SOC_DAPM_HP("Center+Sub", NULL),
	126	SND_SOC_DAPM_HP("Rear", NULL),
	127
	128	SND_SOC_DAPM_MIC("MicIn", NULL),
	129	SND_SOC_DAPM_LINE("LineIn", NULL),
	130	};
	131
	132	/* SMDK-PAIFTX connections */
	133	static const struct snd_soc_dapm_route smdk_wm8580_audio_map[] = {
	134	/* MicIn feeds AINL */
	135	{"AINL", NULL, "MicIn"},
	136
	137	/* LineIn feeds AINL/R */
	138	{"AINL", NULL, "LineIn"},
	139	{"AINR", NULL, "LineIn"},
	140
	141	/* Front Left/Right are fed VOUT1L/R */
	142	{"Front", NULL, "VOUT1L"},
	143	{"Front", NULL, "VOUT1R"},
	144
	145	/* Center/Sub are fed VOUT2L/R */
	146	{"Center+Sub", NULL, "VOUT2L"},
	147	{"Center+Sub", NULL, "VOUT2R"},
	148
	149	/* Rear Left/Right are fed VOUT3L/R */
	150	{"Rear", NULL, "VOUT3L"},
	151	{"Rear", NULL, "VOUT3R"},
	152	};
	153
	154	static int smdk_wm8580_init_paiftx(struct snd_soc_pcm_runtime *rtd)
	155	{
	156	struct snd_soc_codec *codec = rtd->codec;
	157	struct snd_soc_dapm_context *dapm = &codec->dapm;
	158
	159	/* Enabling the microphone requires the fitting of a 0R
	160	* resistor to connect the line from the microphone jack.
	161	*/
	162	snd_soc_dapm_disable_pin(dapm, "MicIn");
	163
	164	return 0;
	165	}
	166
	167	enum {
	168	PRI_PLAYBACK = 0,
	169	PRI_CAPTURE,
	170	SEC_PLAYBACK,
	171	};
	172
	173	static struct snd_soc_dai_link smdk_dai[] = {
	174	[PRI_PLAYBACK] = { /* Primary Playback i/f */
	175	.name = "WM8580 PAIF RX",
	176	.stream_name = "Playback",
	177	.cpu_dai_name = "samsung-i2s.0",
	178	.codec_dai_name = "wm8580-hifi-playback",
	179	.platform_name = "samsung-audio",
	180	.codec_name = "wm8580.0-001b",
	181	.ops = &smdk_ops,
	182	},
	183	[PRI_CAPTURE] = { /* Primary Capture i/f */
	184	.name = "WM8580 PAIF TX",
	185	.stream_name = "Capture",
	186	.cpu_dai_name = "samsung-i2s.0",
	187	.codec_dai_name = "wm8580-hifi-capture",
	188	.platform_name = "samsung-audio",
	189	.codec_name = "wm8580.0-001b",
	190	.init = smdk_wm8580_init_paiftx,
	191	.ops = &smdk_ops,
	192	},
	193	[SEC_PLAYBACK] = { /* Sec_Fifo Playback i/f */
	194	.name = "Sec_FIFO TX",
	195	.stream_name = "Playback",
	196	.cpu_dai_name = "samsung-i2s.x",
	197	.codec_dai_name = "wm8580-hifi-playback",
	198	.platform_name = "samsung-audio",
	199	.codec_name = "wm8580.0-001b",
	200	.ops = &smdk_ops,
	201	},
	202	};
	203
	204	static struct snd_soc_card smdk = {
	205	.name = "SMDK-I2S",
	206	.dai_link = smdk_dai,
	207	.num_links = 2,
	208
	209	.dapm_widgets = smdk_wm8580_dapm_widgets,
	210	.num_dapm_widgets = ARRAY_SIZE(smdk_wm8580_dapm_widgets),
	211	.dapm_routes = smdk_wm8580_audio_map,
	212	.num_dapm_routes = ARRAY_SIZE(smdk_wm8580_audio_map),
	213	};
	214
	215	static struct platform_device *smdk_snd_device;
	216
	217	static int __init smdk_audio_init(void)
	218	{
	219	int ret;
	220	char *str;
	221
	222	if (machine_is_smdkc100()
	223	\|\| machine_is_smdkv210() \|\| machine_is_smdkc110()) {
	224	smdk.num_links = 3;
	225	/* Secondary is at offset SAMSUNG_I2S_SECOFF from Primary */
	226	str = (char *)smdk_dai[SEC_PLAYBACK].cpu_dai_name;
	227	str[strlen(str) - 1] = '0' + SAMSUNG_I2S_SECOFF;
	228	} else if (machine_is_smdk6410()) {
	229	str = (char *)smdk_dai[PRI_PLAYBACK].cpu_dai_name;
	230	str[strlen(str) - 1] = '2';
	231	str = (char *)smdk_dai[PRI_CAPTURE].cpu_dai_name;
	232	str[strlen(str) - 1] = '2';
	233	}
	234
	235	smdk_snd_device = platform_device_alloc("soc-audio", -1);
	236	if (!smdk_snd_device)
	237	return -ENOMEM;
	238
	239	platform_set_drvdata(smdk_snd_device, &smdk);
	240	ret = platform_device_add(smdk_snd_device);
	241
	242	if (ret)
	243	platform_device_put(smdk_snd_device);
	244
	245	return ret;
	246	}
	247	module_init(smdk_audio_init);
	248
	249	static void __exit smdk_audio_exit(void)
	250	{
	251	platform_device_unregister(smdk_snd_device);
	252	}
	253	module_exit(smdk_audio_exit);
	254
	255	MODULE_AUTHOR("Jaswinder Singh, jassi.brar@samsung.com");
	256	MODULE_DESCRIPTION("ALSA SoC SMDK WM8580");
	257	MODULE_LICENSE("GPL");