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

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

/* 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;

	/* 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,
					SMDK64XX_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;
}

/*
 * 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", NULL),
	SND_SOC_DAPM_HP("Center+Sub", NULL),
	SND_SOC_DAPM_HP("Rear", 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", 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 smdk64xx_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 smdk64xx 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 smdk64xx_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 smdk64xx 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;
}

static struct snd_soc_dai_link smdk64xx_dai[] = {
{ /* Primary Playback i/f */
	.name = "WM8580 PAIF RX",
	.stream_name = "Playback",
	.cpu_dai_name = "samsung-i2s.2",
	.codec_dai_name = "wm8580-hifi-playback",
	.platform_name = "samsung-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 = "samsung-i2s.2",
	.codec_dai_name = "wm8580-hifi-capture",
	.platform_name = "samsung-audio",
	.codec_name = "wm8580-codec.0-001b",
	.init = smdk64xx_wm8580_init_paiftx,
	.ops = &smdk64xx_ops,
},
};

static struct snd_soc_card smdk64xx = {
	.name = "SMDK64xx 5.1",
	.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>
d0f5fa17	19
d0f5fa17	20	#include "../codecs/wm8580.h"
4b640cf3	21	#include "dma.h"
0fff21a8	22	#include "i2s.h"
d0f5fa17	23
9d37e894 MB	24	/*
	25	* Default CFG switch settings to use this driver:
	26	*
	27	* SMDK6410: Set CFG1 1-3 Off, CFG2 1-4 On
	28	*/
	29
d0f5fa17	30	/* SMDK64XX has a 12MHZ crystal attached to WM8580 */
	31	#define SMDK64XX_WM8580_FREQ 12000000
	32
	33	static int smdk64xx_hw_params(struct snd_pcm_substream *substream,
	34	struct snd_pcm_hw_params *params)
	35	{
	36	struct snd_soc_pcm_runtime *rtd = substream->private_data;
f0fba2ad LG	37	struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
f0fba2ad LG	38	struct snd_soc_dai *codec_dai = rtd->codec_dai;
d0f5fa17	39	unsigned int pll_out;
	40	int bfs, rfs, ret;
	41
	42	switch (params_format(params)) {
	43	case SNDRV_PCM_FORMAT_U8:
	44	case SNDRV_PCM_FORMAT_S8:
	45	bfs = 16;
	46	break;
	47	case SNDRV_PCM_FORMAT_U16_LE:
	48	case SNDRV_PCM_FORMAT_S16_LE:
	49	bfs = 32;
	50	break;
	51	default:
	52	return -EINVAL;
	53	}
	54
	55	/* The Fvco for WM8580 PLLs must fall within [90,100]MHz.
	56	* This criterion can't be met if we request PLL output
	57	* as {8000x256, 64000x256, 11025x256}Hz.
	58	* As a wayout, we rather change rfs to a minimum value that
	59	* results in (params_rate(params) * rfs), and itself, acceptable
	60	* to both - the CODEC and the CPU.
	61	*/
	62	switch (params_rate(params)) {
	63	case 16000:
	64	case 22050:
	65	case 32000:
	66	case 44100:
	67	case 48000:
	68	case 88200:
	69	case 96000:
	70	rfs = 256;
	71	break;
	72	case 64000:
	73	rfs = 384;
	74	break;
	75	case 8000:
	76	case 11025:
	77	rfs = 512;
	78	break;
	79	default:
	80	return -EINVAL;
	81	}
	82	pll_out = params_rate(params) * rfs;
	83
	84	/* Set the Codec DAI configuration */
	85	ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S
	86	\| SND_SOC_DAIFMT_NB_NF
	87	\| SND_SOC_DAIFMT_CBM_CFM);
	88	if (ret < 0)
	89	return ret;
	90
	91	/* Set the AP DAI configuration */
	92	ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S
	93	\| SND_SOC_DAIFMT_NB_NF
	94	\| SND_SOC_DAIFMT_CBM_CFM);
	95	if (ret < 0)
	96	return ret;
	97
26d95b6e	98	/* Set WM8580 to drive MCLK from its PLLA */
d0f5fa17	99	ret = snd_soc_dai_set_clkdiv(codec_dai, WM8580_MCLK,
	100	WM8580_CLKSRC_PLLA);
	101	if (ret < 0)
	102	return ret;
	103
c5607d8e MB	104	ret = snd_soc_dai_set_pll(codec_dai, WM8580_PLLA, 0,
c5607d8e MB	105	SMDK64XX_WM8580_FREQ, pll_out);
d0f5fa17	106	if (ret < 0)
	107	return ret;
	108
c5607d8e MB	109	ret = snd_soc_dai_set_sysclk(codec_dai, WM8580_CLKSRC_PLLA,
c5607d8e MB	110	pll_out, SND_SOC_CLOCK_IN);
d0f5fa17	111	if (ret < 0)
	112	return ret;
	113
d0f5fa17	114	return 0;
	115	}
	116
	117	/*
	118	* SMDK64XX WM8580 DAI operations.
	119	*/
	120	static struct snd_soc_ops smdk64xx_ops = {
	121	.hw_params = smdk64xx_hw_params,
	122	};
	123
	124	/* SMDK64xx Playback widgets */
	125	static const struct snd_soc_dapm_widget wm8580_dapm_widgets_pbk[] = {
698cb111 MB	126	SND_SOC_DAPM_HP("Front", NULL),
	127	SND_SOC_DAPM_HP("Center+Sub", NULL),
	128	SND_SOC_DAPM_HP("Rear", NULL),
d0f5fa17	129	};
	130
	131	/* SMDK64xx Capture widgets */
	132	static const struct snd_soc_dapm_widget wm8580_dapm_widgets_cpt[] = {
	133	SND_SOC_DAPM_MIC("MicIn", NULL),
	134	SND_SOC_DAPM_LINE("LineIn", NULL),
	135	};
	136
	137	/* SMDK-PAIFTX connections */
	138	static const struct snd_soc_dapm_route audio_map_tx[] = {
	139	/* MicIn feeds AINL */
	140	{"AINL", NULL, "MicIn"},
	141
	142	/* LineIn feeds AINL/R */
	143	{"AINL", NULL, "LineIn"},
	144	{"AINR", NULL, "LineIn"},
	145	};
	146
	147	/* SMDK-PAIFRX connections */
	148	static const struct snd_soc_dapm_route audio_map_rx[] = {
	149	/* Front Left/Right are fed VOUT1L/R */
698cb111 MB	150	{"Front", NULL, "VOUT1L"},
698cb111 MB	151	{"Front", NULL, "VOUT1R"},
d0f5fa17	152
d0f5fa17	153	/* Center/Sub are fed VOUT2L/R */
698cb111 MB	154	{"Center+Sub", NULL, "VOUT2L"},
698cb111 MB	155	{"Center+Sub", NULL, "VOUT2R"},
d0f5fa17	156
d0f5fa17	157	/* Rear Left/Right are fed VOUT3L/R */
698cb111 MB	158	{"Rear", NULL, "VOUT3L"},
698cb111 MB	159	{"Rear", NULL, "VOUT3R"},
d0f5fa17	160	};
d0f5fa17	161
f0fba2ad	162	static int smdk64xx_wm8580_init_paiftx(struct snd_soc_pcm_runtime *rtd)
d0f5fa17	163	{
f0fba2ad	164	struct snd_soc_codec *codec = rtd->codec;
ce6120cc	165	struct snd_soc_dapm_context *dapm = &codec->dapm;
f0fba2ad	166
d0f5fa17	167	/* Add smdk64xx specific Capture widgets */
ce6120cc	168	snd_soc_dapm_new_controls(dapm, wm8580_dapm_widgets_cpt,
d0f5fa17	169	ARRAY_SIZE(wm8580_dapm_widgets_cpt));
	170
	171	/* Set up PAIFTX audio path */
ce6120cc	172	snd_soc_dapm_add_routes(dapm, audio_map_tx, ARRAY_SIZE(audio_map_tx));
d0f5fa17	173
26d95b6e MB	174	/* Enabling the microphone requires the fitting of a 0R
	175	* resistor to connect the line from the microphone jack.
	176	*/
ce6120cc	177	snd_soc_dapm_disable_pin(dapm, "MicIn");
d0f5fa17	178
d0f5fa17	179	/* signal a DAPM event */
ce6120cc	180	snd_soc_dapm_sync(dapm);
d0f5fa17	181
	182	return 0;
	183	}
	184
f0fba2ad	185	static int smdk64xx_wm8580_init_paifrx(struct snd_soc_pcm_runtime *rtd)
d0f5fa17	186	{
f0fba2ad	187	struct snd_soc_codec *codec = rtd->codec;
ce6120cc	188	struct snd_soc_dapm_context *dapm = &codec->dapm;
f0fba2ad	189
d0f5fa17	190	/* Add smdk64xx specific Playback widgets */
ce6120cc	191	snd_soc_dapm_new_controls(dapm, wm8580_dapm_widgets_pbk,
d0f5fa17	192	ARRAY_SIZE(wm8580_dapm_widgets_pbk));
	193
	194	/* Set up PAIFRX audio path */
ce6120cc	195	snd_soc_dapm_add_routes(dapm, audio_map_rx, ARRAY_SIZE(audio_map_rx));
d0f5fa17	196
d0f5fa17	197	/* signal a DAPM event */
ce6120cc	198	snd_soc_dapm_sync(dapm);
d0f5fa17	199
	200	return 0;
	201	}
	202
	203	static struct snd_soc_dai_link smdk64xx_dai[] = {
	204	{ /* Primary Playback i/f */
	205	.name = "WM8580 PAIF RX",
	206	.stream_name = "Playback",
0fff21a8	207	.cpu_dai_name = "samsung-i2s.2",
f0fba2ad	208	.codec_dai_name = "wm8580-hifi-playback",
58bb4072	209	.platform_name = "samsung-audio",
f0fba2ad	210	.codec_name = "wm8580-codec.0-001b",
d0f5fa17	211	.init = smdk64xx_wm8580_init_paifrx,
	212	.ops = &smdk64xx_ops,
	213	},
	214	{ /* Primary Capture i/f */
	215	.name = "WM8580 PAIF TX",
	216	.stream_name = "Capture",
0fff21a8	217	.cpu_dai_name = "samsung-i2s.2",
f0fba2ad	218	.codec_dai_name = "wm8580-hifi-capture",
58bb4072	219	.platform_name = "samsung-audio",
f0fba2ad	220	.codec_name = "wm8580-codec.0-001b",
d0f5fa17	221	.init = smdk64xx_wm8580_init_paiftx,
	222	.ops = &smdk64xx_ops,
	223	},
	224	};
	225
	226	static struct snd_soc_card smdk64xx = {
28927011	227	.name = "SMDK64xx 5.1",
d0f5fa17	228	.dai_link = smdk64xx_dai,
	229	.num_links = ARRAY_SIZE(smdk64xx_dai),
	230	};
	231
d0f5fa17	232	static struct platform_device *smdk64xx_snd_device;
	233
	234	static int __init smdk64xx_audio_init(void)
	235	{
	236	int ret;
	237
	238	smdk64xx_snd_device = platform_device_alloc("soc-audio", -1);
	239	if (!smdk64xx_snd_device)
	240	return -ENOMEM;
	241
f0fba2ad	242	platform_set_drvdata(smdk64xx_snd_device, &smdk64xx);
d0f5fa17	243	ret = platform_device_add(smdk64xx_snd_device);
	244
	245	if (ret)
	246	platform_device_put(smdk64xx_snd_device);
	247
	248	return ret;
	249	}
	250	module_init(smdk64xx_audio_init);
	251
	252	MODULE_AUTHOR("Jaswinder Singh, jassi.brar@samsung.com");
	253	MODULE_DESCRIPTION("ALSA SoC SMDK64XX WM8580");
	254	MODULE_LICENSE("GPL");