[mirror_ubuntu-artful-kernel.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"

/*
 * 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;

	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;

	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;

	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", 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;

	/* 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
9d37e894 MB	25	/*
	26	* Default CFG switch settings to use this driver:
	27	*
	28	* SMDK6410: Set CFG1 1-3 Off, CFG2 1-4 On
	29	*/
	30
d0f5fa17	31	/* SMDK64XX has a 12MHZ crystal attached to WM8580 */
	32	#define SMDK64XX_WM8580_FREQ 12000000
	33
	34	static int smdk64xx_hw_params(struct snd_pcm_substream *substream,
	35	struct snd_pcm_hw_params *params)
	36	{
	37	struct snd_soc_pcm_runtime *rtd = substream->private_data;
f0fba2ad LG	38	struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
f0fba2ad LG	39	struct snd_soc_dai *codec_dai = rtd->codec_dai;
d0f5fa17	40	unsigned int pll_out;
	41	int bfs, rfs, ret;
	42
	43	switch (params_format(params)) {
	44	case SNDRV_PCM_FORMAT_U8:
	45	case SNDRV_PCM_FORMAT_S8:
	46	bfs = 16;
	47	break;
	48	case SNDRV_PCM_FORMAT_U16_LE:
	49	case SNDRV_PCM_FORMAT_S16_LE:
	50	bfs = 32;
	51	break;
	52	default:
	53	return -EINVAL;
	54	}
	55
	56	/* The Fvco for WM8580 PLLs must fall within [90,100]MHz.
	57	* This criterion can't be met if we request PLL output
	58	* as {8000x256, 64000x256, 11025x256}Hz.
	59	* As a wayout, we rather change rfs to a minimum value that
	60	* results in (params_rate(params) * rfs), and itself, acceptable
	61	* to both - the CODEC and the CPU.
	62	*/
	63	switch (params_rate(params)) {
	64	case 16000:
	65	case 22050:
	66	case 32000:
	67	case 44100:
	68	case 48000:
	69	case 88200:
	70	case 96000:
	71	rfs = 256;
	72	break;
	73	case 64000:
	74	rfs = 384;
	75	break;
	76	case 8000:
	77	case 11025:
	78	rfs = 512;
	79	break;
	80	default:
	81	return -EINVAL;
	82	}
	83	pll_out = params_rate(params) * rfs;
	84
	85	/* Set the Codec DAI configuration */
	86	ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S
	87	\| SND_SOC_DAIFMT_NB_NF
	88	\| SND_SOC_DAIFMT_CBM_CFM);
	89	if (ret < 0)
	90	return ret;
	91
	92	/* Set the AP DAI configuration */
	93	ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S
	94	\| SND_SOC_DAIFMT_NB_NF
	95	\| SND_SOC_DAIFMT_CBM_CFM);
	96	if (ret < 0)
	97	return ret;
	98
	99	ret = snd_soc_dai_set_sysclk(cpu_dai, S3C64XX_CLKSRC_CDCLK,
	100	0, SND_SOC_CLOCK_IN);
	101	if (ret < 0)
	102	return ret;
	103
104	/* We use PCLK for basic ops in SoC-Slave mode */
105	ret = snd_soc_dai_set_sysclk(cpu_dai, S3C64XX_CLKSRC_PCLK,
106	0, SND_SOC_CLOCK_IN);
107	if (ret < 0)
108	return ret;
109
26d95b6e	110	/* Set WM8580 to drive MCLK from its PLLA */
d0f5fa17	111	ret = snd_soc_dai_set_clkdiv(codec_dai, WM8580_MCLK,
	112	WM8580_CLKSRC_PLLA);
	113	if (ret < 0)
	114	return ret;
	115
c5607d8e MB	116	ret = snd_soc_dai_set_pll(codec_dai, WM8580_PLLA, 0,
c5607d8e MB	117	SMDK64XX_WM8580_FREQ, pll_out);
d0f5fa17	118	if (ret < 0)
	119	return ret;
	120
c5607d8e MB	121	ret = snd_soc_dai_set_sysclk(codec_dai, WM8580_CLKSRC_PLLA,
c5607d8e MB	122	pll_out, SND_SOC_CLOCK_IN);
d0f5fa17	123	if (ret < 0)
	124	return ret;
	125
	126	ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C_I2SV2_DIV_BCLK, bfs);
	127	if (ret < 0)
	128	return ret;
	129
	130	ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C_I2SV2_DIV_RCLK, rfs);
	131	if (ret < 0)
	132	return ret;
	133
	134	return 0;
	135	}
	136
	137	/*
	138	* SMDK64XX WM8580 DAI operations.
	139	*/
	140	static struct snd_soc_ops smdk64xx_ops = {
	141	.hw_params = smdk64xx_hw_params,
	142	};
	143
	144	/* SMDK64xx Playback widgets */
	145	static const struct snd_soc_dapm_widget wm8580_dapm_widgets_pbk[] = {
698cb111 MB	146	SND_SOC_DAPM_HP("Front", NULL),
	147	SND_SOC_DAPM_HP("Center+Sub", NULL),
	148	SND_SOC_DAPM_HP("Rear", NULL),
d0f5fa17	149	};
	150
	151	/* SMDK64xx Capture widgets */
	152	static const struct snd_soc_dapm_widget wm8580_dapm_widgets_cpt[] = {
	153	SND_SOC_DAPM_MIC("MicIn", NULL),
	154	SND_SOC_DAPM_LINE("LineIn", NULL),
	155	};
	156
	157	/* SMDK-PAIFTX connections */
	158	static const struct snd_soc_dapm_route audio_map_tx[] = {
	159	/* MicIn feeds AINL */
	160	{"AINL", NULL, "MicIn"},
	161
	162	/* LineIn feeds AINL/R */
	163	{"AINL", NULL, "LineIn"},
	164	{"AINR", NULL, "LineIn"},
	165	};
	166
	167	/* SMDK-PAIFRX connections */
	168	static const struct snd_soc_dapm_route audio_map_rx[] = {
	169	/* Front Left/Right are fed VOUT1L/R */
698cb111 MB	170	{"Front", NULL, "VOUT1L"},
698cb111 MB	171	{"Front", NULL, "VOUT1R"},
d0f5fa17	172
d0f5fa17	173	/* Center/Sub are fed VOUT2L/R */
698cb111 MB	174	{"Center+Sub", NULL, "VOUT2L"},
698cb111 MB	175	{"Center+Sub", NULL, "VOUT2R"},
d0f5fa17	176
d0f5fa17	177	/* Rear Left/Right are fed VOUT3L/R */
698cb111 MB	178	{"Rear", NULL, "VOUT3L"},
698cb111 MB	179	{"Rear", NULL, "VOUT3R"},
d0f5fa17	180	};
d0f5fa17	181
f0fba2ad	182	static int smdk64xx_wm8580_init_paiftx(struct snd_soc_pcm_runtime *rtd)
d0f5fa17	183	{
f0fba2ad LG	184	struct snd_soc_codec *codec = rtd->codec;
f0fba2ad LG	185
d0f5fa17	186	/* Add smdk64xx specific Capture widgets */
	187	snd_soc_dapm_new_controls(codec, wm8580_dapm_widgets_cpt,
	188	ARRAY_SIZE(wm8580_dapm_widgets_cpt));
	189
	190	/* Set up PAIFTX audio path */
	191	snd_soc_dapm_add_routes(codec, audio_map_tx, ARRAY_SIZE(audio_map_tx));
	192
26d95b6e MB	193	/* Enabling the microphone requires the fitting of a 0R
	194	* resistor to connect the line from the microphone jack.
	195	*/
	196	snd_soc_dapm_disable_pin(codec, "MicIn");
d0f5fa17	197
	198	/* signal a DAPM event */
	199	snd_soc_dapm_sync(codec);
	200
	201	return 0;
	202	}
	203
f0fba2ad	204	static int smdk64xx_wm8580_init_paifrx(struct snd_soc_pcm_runtime *rtd)
d0f5fa17	205	{
f0fba2ad LG	206	struct snd_soc_codec *codec = rtd->codec;
f0fba2ad LG	207
d0f5fa17	208	/* Add smdk64xx specific Playback widgets */
	209	snd_soc_dapm_new_controls(codec, wm8580_dapm_widgets_pbk,
	210	ARRAY_SIZE(wm8580_dapm_widgets_pbk));
	211
	212	/* Set up PAIFRX audio path */
	213	snd_soc_dapm_add_routes(codec, audio_map_rx, ARRAY_SIZE(audio_map_rx));
	214
d0f5fa17	215	/* signal a DAPM event */
	216	snd_soc_dapm_sync(codec);
	217
	218	return 0;
	219	}
	220
	221	static struct snd_soc_dai_link smdk64xx_dai[] = {
	222	{ /* Primary Playback i/f */
	223	.name = "WM8580 PAIF RX",
	224	.stream_name = "Playback",
f0fba2ad LG	225	.cpu_dai_name = "s3c64xx-iis-v4",
	226	.codec_dai_name = "wm8580-hifi-playback",
	227	.platform_name = "s3c24xx-pcm-audio",
	228	.codec_name = "wm8580-codec.0-001b",
d0f5fa17	229	.init = smdk64xx_wm8580_init_paifrx,
	230	.ops = &smdk64xx_ops,
	231	},
	232	{ /* Primary Capture i/f */
	233	.name = "WM8580 PAIF TX",
	234	.stream_name = "Capture",
f0fba2ad LG	235	.cpu_dai_name = "s3c64xx-iis-v4",
	236	.codec_dai_name = "wm8580-hifi-capture",
	237	.platform_name = "s3c24xx-pcm-audio",
	238	.codec_name = "wm8580-codec.0-001b",
d0f5fa17	239	.init = smdk64xx_wm8580_init_paiftx,
	240	.ops = &smdk64xx_ops,
	241	},
	242	};
	243
	244	static struct snd_soc_card smdk64xx = {
	245	.name = "smdk64xx",
d0f5fa17	246	.dai_link = smdk64xx_dai,
	247	.num_links = ARRAY_SIZE(smdk64xx_dai),
	248	};
	249
d0f5fa17	250	static struct platform_device *smdk64xx_snd_device;
	251
	252	static int __init smdk64xx_audio_init(void)
	253	{
	254	int ret;
	255
	256	smdk64xx_snd_device = platform_device_alloc("soc-audio", -1);
	257	if (!smdk64xx_snd_device)
	258	return -ENOMEM;
	259
f0fba2ad	260	platform_set_drvdata(smdk64xx_snd_device, &smdk64xx);
d0f5fa17	261	ret = platform_device_add(smdk64xx_snd_device);
	262
	263	if (ret)
	264	platform_device_put(smdk64xx_snd_device);
	265
	266	return ret;
	267	}
	268	module_init(smdk64xx_audio_init);
	269
	270	MODULE_AUTHOR("Jaswinder Singh, jassi.brar@samsung.com");
	271	MODULE_DESCRIPTION("ALSA SoC SMDK64XX WM8580");
	272	MODULE_LICENSE("GPL");