[linux-2.6-block.git] / sound / soc / pxa / zylonite.c

/*
 * zylonite.c  --  SoC audio for Zylonite
 *
 * Copyright 2008 Wolfson Microelectronics PLC.
 * Author: Mark Brown <broonie@opensource.wolfsonmicro.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 <linux/moduleparam.h>
#include <linux/device.h>
#include <linux/clk.h>
#include <linux/i2c.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/soc.h>

#include "../codecs/wm9713.h"
#include "pxa2xx-ac97.h"
#include "pxa-ssp.h"

/*
 * There is a physical switch SW15 on the board which changes the MCLK
 * for the WM9713 between the standard AC97 master clock and the
 * output of the CLK_POUT signal from the PXA.
 */
static int clk_pout;
module_param(clk_pout, int, 0);
MODULE_PARM_DESC(clk_pout, "Use CLK_POUT as WM9713 MCLK (SW15 on board).");

static struct clk *pout;

static struct snd_soc_card zylonite;

static const struct snd_soc_dapm_widget zylonite_dapm_widgets[] = {
	SND_SOC_DAPM_HP("Headphone", NULL),
	SND_SOC_DAPM_MIC("Headset Microphone", NULL),
	SND_SOC_DAPM_MIC("Handset Microphone", NULL),
	SND_SOC_DAPM_SPK("Multiactor", NULL),
	SND_SOC_DAPM_SPK("Headset Earpiece", NULL),
};

/* Currently supported audio map */
static const struct snd_soc_dapm_route audio_map[] = {

	/* Headphone output connected to HPL/HPR */
	{ "Headphone", NULL,  "HPL" },
	{ "Headphone", NULL,  "HPR" },

	/* On-board earpiece */
	{ "Headset Earpiece", NULL, "OUT3" },

	/* Headphone mic */
	{ "MIC2A", NULL, "Mic Bias" },
	{ "Mic Bias", NULL, "Headset Microphone" },

	/* On-board mic */
	{ "MIC1", NULL, "Mic Bias" },
	{ "Mic Bias", NULL, "Handset Microphone" },

	/* Multiactor differentially connected over SPKL/SPKR */
	{ "Multiactor", NULL, "SPKL" },
	{ "Multiactor", NULL, "SPKR" },
};

static int zylonite_wm9713_init(struct snd_soc_pcm_runtime *rtd)
{
	struct snd_soc_codec *codec = rtd->codec;
	struct snd_soc_dapm_context *dapm = &codec->dapm;

	if (clk_pout)
		snd_soc_dai_set_pll(rtd->codec_dai, 0, 0,
				    clk_get_rate(pout), 0);

	snd_soc_dapm_new_controls(dapm, zylonite_dapm_widgets,
				  ARRAY_SIZE(zylonite_dapm_widgets));

	snd_soc_dapm_add_routes(dapm, audio_map, ARRAY_SIZE(audio_map));

	/* Static setup for now */
	snd_soc_dapm_enable_pin(dapm, "Headphone");
	snd_soc_dapm_enable_pin(dapm, "Headset Earpiece");

	return 0;
}

static int zylonite_voice_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 *codec_dai = rtd->codec_dai;
	struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
	unsigned int pll_out = 0;
	unsigned int wm9713_div = 0;
	int ret = 0;
	int rate = params_rate(params);
	int width = snd_pcm_format_physical_width(params_format(params));

	/* Only support ratios that we can generate neatly from the AC97
	 * based master clock - in particular, this excludes 44.1kHz.
	 * In most applications the voice DAC will be used for telephony
	 * data so multiples of 8kHz will be the common case.
	 */
	switch (rate) {
	case 8000:
		wm9713_div = 12;
		break;
	case 16000:
		wm9713_div = 6;
		break;
	case 48000:
		wm9713_div = 2;
		break;
	default:
		/* Don't support OSS emulation */
		return -EINVAL;
	}

	/* Add 1 to the width for the leading clock cycle */
	pll_out = rate * (width + 1) * 8;

	ret = snd_soc_dai_set_sysclk(cpu_dai, PXA_SSP_CLK_AUDIO, 0, 1);
	if (ret < 0)
		return ret;

	ret = snd_soc_dai_set_pll(cpu_dai, 0, 0, 0, pll_out);
	if (ret < 0)
		return ret;

	if (clk_pout)
		ret = snd_soc_dai_set_clkdiv(codec_dai, WM9713_PCMCLK_PLL_DIV,
					     WM9713_PCMDIV(wm9713_div));
	else
		ret = snd_soc_dai_set_clkdiv(codec_dai, WM9713_PCMCLK_DIV,
					     WM9713_PCMDIV(wm9713_div));
	if (ret < 0)
		return ret;

	ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S |
		SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS);
	if (ret < 0)
		return ret;

	ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S |
		SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS);
	if (ret < 0)
		return ret;

	return 0;
}

static struct snd_soc_ops zylonite_voice_ops = {
	.hw_params = zylonite_voice_hw_params,
};

static struct snd_soc_dai_link zylonite_dai[] = {
{
	.name = "AC97",
	.stream_name = "AC97 HiFi",
	.codec_name = "wm9713-codec",
	.platform_name = "pxa-pcm-audio",
	.cpu_dai_name = "pxa2xx-ac97",
	.codec_dai_name = "wm9713-hifi",
	.init = zylonite_wm9713_init,
},
{
	.name = "AC97 Aux",
	.stream_name = "AC97 Aux",
	.codec_name = "wm9713-codec",
	.platform_name = "pxa-pcm-audio",
	.cpu_dai_name = "pxa2xx-ac97-aux",
	.codec_dai_name = "wm9713-aux",
},
{
	.name = "WM9713 Voice",
	.stream_name = "WM9713 Voice",
	.codec_name = "wm9713-codec",
	.platform_name = "pxa-pcm-audio",
	.cpu_dai_name = "pxa-ssp-dai.2",
	.codec_dai_name = "wm9713-voice",
	.ops = &zylonite_voice_ops,
},
};

static int zylonite_probe(struct snd_soc_card *card)
{
	int ret;

	if (clk_pout) {
		pout = clk_get(NULL, "CLK_POUT");
		if (IS_ERR(pout)) {
			dev_err(card->dev, "Unable to obtain CLK_POUT: %ld\n",
				PTR_ERR(pout));
			return PTR_ERR(pout);
		}

		ret = clk_enable(pout);
		if (ret != 0) {
			dev_err(card->dev, "Unable to enable CLK_POUT: %d\n",
				ret);
			clk_put(pout);
			return ret;
		}

		dev_dbg(card->dev, "MCLK enabled at %luHz\n",
			clk_get_rate(pout));
	}

	return 0;
}

static int zylonite_remove(struct snd_soc_card *card)
{
	if (clk_pout) {
		clk_disable(pout);
		clk_put(pout);
	}

	return 0;
}

static int zylonite_suspend_post(struct snd_soc_card *card)
{
	if (clk_pout)
		clk_disable(pout);

	return 0;
}

static int zylonite_resume_pre(struct snd_soc_card *card)
{
	int ret = 0;

	if (clk_pout) {
		ret = clk_enable(pout);
		if (ret != 0)
			dev_err(card->dev, "Unable to enable CLK_POUT: %d\n",
				ret);
	}

	return ret;
}

static struct snd_soc_card zylonite = {
	.name = "Zylonite",
	.owner = THIS_MODULE,
	.probe = &zylonite_probe,
	.remove = &zylonite_remove,
	.suspend_post = &zylonite_suspend_post,
	.resume_pre = &zylonite_resume_pre,
	.dai_link = zylonite_dai,
	.num_links = ARRAY_SIZE(zylonite_dai),
};

static struct platform_device *zylonite_snd_ac97_device;

static int __init zylonite_init(void)
{
	int ret;

	zylonite_snd_ac97_device = platform_device_alloc("soc-audio", -1);
	if (!zylonite_snd_ac97_device)
		return -ENOMEM;

	platform_set_drvdata(zylonite_snd_ac97_device, &zylonite);

	ret = platform_device_add(zylonite_snd_ac97_device);
	if (ret != 0)
		platform_device_put(zylonite_snd_ac97_device);

	return ret;
}

static void __exit zylonite_exit(void)
{
	platform_device_unregister(zylonite_snd_ac97_device);
}

module_init(zylonite_init);
module_exit(zylonite_exit);

MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
MODULE_DESCRIPTION("ALSA SoC WM9713 Zylonite");
MODULE_LICENSE("GPL");
Commit	Line	Data
2dac9217 MB	1	/*
	2	* zylonite.c -- SoC audio for Zylonite
	3	*
	4	* Copyright 2008 Wolfson Microelectronics PLC.
	5	* Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
	6	*
	7	* This program is free software; you can redistribute it and/or
	8	* modify it under the terms of the GNU General Public License as
	9	* published by the Free Software Foundation; either version 2 of the
	10	* License, or (at your option) any later version.
	11	*
	12	*/
	13
	14	#include <linux/module.h>
	15	#include <linux/moduleparam.h>
	16	#include <linux/device.h>
2c782f59	17	#include <linux/clk.h>
2dac9217 MB	18	#include <linux/i2c.h>
	19	#include <sound/core.h>
	20	#include <sound/pcm.h>
	21	#include <sound/pcm_params.h>
	22	#include <sound/soc.h>
2dac9217 MB	23
2dac9217 MB	24	#include "../codecs/wm9713.h"
2dac9217 MB	25	#include "pxa2xx-ac97.h"
	26	#include "pxa-ssp.h"
	27
2c782f59 MB	28	/*
	29	* There is a physical switch SW15 on the board which changes the MCLK
	30	* for the WM9713 between the standard AC97 master clock and the
	31	* output of the CLK_POUT signal from the PXA.
	32	*/
	33	static int clk_pout;
	34	module_param(clk_pout, int, 0);
	35	MODULE_PARM_DESC(clk_pout, "Use CLK_POUT as WM9713 MCLK (SW15 on board).");
	36
	37	static struct clk *pout;
	38
2dac9217 MB	39	static struct snd_soc_card zylonite;
	40
	41	static const struct snd_soc_dapm_widget zylonite_dapm_widgets[] = {
	42	SND_SOC_DAPM_HP("Headphone", NULL),
	43	SND_SOC_DAPM_MIC("Headset Microphone", NULL),
	44	SND_SOC_DAPM_MIC("Handset Microphone", NULL),
	45	SND_SOC_DAPM_SPK("Multiactor", NULL),
	46	SND_SOC_DAPM_SPK("Headset Earpiece", NULL),
	47	};
	48
	49	/* Currently supported audio map */
	50	static const struct snd_soc_dapm_route audio_map[] = {
	51
	52	/* Headphone output connected to HPL/HPR */
	53	{ "Headphone", NULL, "HPL" },
	54	{ "Headphone", NULL, "HPR" },
	55
	56	/* On-board earpiece */
	57	{ "Headset Earpiece", NULL, "OUT3" },
	58
	59	/* Headphone mic */
	60	{ "MIC2A", NULL, "Mic Bias" },
	61	{ "Mic Bias", NULL, "Headset Microphone" },
	62
	63	/* On-board mic */
	64	{ "MIC1", NULL, "Mic Bias" },
	65	{ "Mic Bias", NULL, "Handset Microphone" },
	66
	67	/* Multiactor differentially connected over SPKL/SPKR */
	68	{ "Multiactor", NULL, "SPKL" },
	69	{ "Multiactor", NULL, "SPKR" },
	70	};
	71
f0fba2ad	72	static int zylonite_wm9713_init(struct snd_soc_pcm_runtime *rtd)
2dac9217	73	{
f0fba2ad	74	struct snd_soc_codec *codec = rtd->codec;
ce6120cc	75	struct snd_soc_dapm_context *dapm = &codec->dapm;
f0fba2ad	76
2c782f59	77	if (clk_pout)
f0fba2ad	78	snd_soc_dai_set_pll(rtd->codec_dai, 0, 0,
85488037	79	clk_get_rate(pout), 0);
2dac9217	80
ce6120cc	81	snd_soc_dapm_new_controls(dapm, zylonite_dapm_widgets,
2dac9217 MB	82	ARRAY_SIZE(zylonite_dapm_widgets));
2dac9217 MB	83
ce6120cc	84	snd_soc_dapm_add_routes(dapm, audio_map, ARRAY_SIZE(audio_map));
2dac9217 MB	85
2dac9217 MB	86	/* Static setup for now */
ce6120cc LG	87	snd_soc_dapm_enable_pin(dapm, "Headphone");
ce6120cc LG	88	snd_soc_dapm_enable_pin(dapm, "Headset Earpiece");
2dac9217	89
2dac9217 MB	90	return 0;
	91	}
	92
	93	static int zylonite_voice_hw_params(struct snd_pcm_substream *substream,
	94	struct snd_pcm_hw_params *params)
	95	{
	96	struct snd_soc_pcm_runtime *rtd = substream->private_data;
f0fba2ad LG	97	struct snd_soc_dai *codec_dai = rtd->codec_dai;
f0fba2ad LG	98	struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
a435869c	99	unsigned int pll_out = 0;
2dac9217 MB	100	unsigned int wm9713_div = 0;
2dac9217 MB	101	int ret = 0;
85fab780 MB	102	int rate = params_rate(params);
	103	int width = snd_pcm_format_physical_width(params_format(params));
	104
	105	/* Only support ratios that we can generate neatly from the AC97
	106	* based master clock - in particular, this excludes 44.1kHz.
	107	* In most applications the voice DAC will be used for telephony
	108	* data so multiples of 8kHz will be the common case.
	109	*/
	110	switch (rate) {
2dac9217 MB	111	case 8000:
2dac9217 MB	112	wm9713_div = 12;
2dac9217 MB	113	break;
	114	case 16000:
	115	wm9713_div = 6;
2dac9217 MB	116	break;
2dac9217 MB	117	case 48000:
2dac9217	118	wm9713_div = 2;
2dac9217	119	break;
85fab780 MB	120	default:
	121	/* Don't support OSS emulation */
	122	return -EINVAL;
2dac9217 MB	123	}
2dac9217 MB	124
85fab780 MB	125	/* Add 1 to the width for the leading clock cycle */
85fab780 MB	126	pll_out = rate * (width + 1) * 8;
2dac9217	127
85fab780	128	ret = snd_soc_dai_set_sysclk(cpu_dai, PXA_SSP_CLK_AUDIO, 0, 1);
2dac9217 MB	129	if (ret < 0)
	130	return ret;
	131
85488037	132	ret = snd_soc_dai_set_pll(cpu_dai, 0, 0, 0, pll_out);
a435869c MB	133	if (ret < 0)
	134	return ret;
	135
2c782f59 MB	136	if (clk_pout)
	137	ret = snd_soc_dai_set_clkdiv(codec_dai, WM9713_PCMCLK_PLL_DIV,
	138	WM9713_PCMDIV(wm9713_div));
	139	else
	140	ret = snd_soc_dai_set_clkdiv(codec_dai, WM9713_PCMCLK_DIV,
	141	WM9713_PCMDIV(wm9713_div));
2dac9217 MB	142	if (ret < 0)
	143	return ret;
	144
85fab780 MB	145	ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S \|
	146	SND_SOC_DAIFMT_NB_NF \| SND_SOC_DAIFMT_CBS_CFS);
	147	if (ret < 0)
	148	return ret;
	149
	150	ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S \|
	151	SND_SOC_DAIFMT_NB_NF \| SND_SOC_DAIFMT_CBS_CFS);
	152	if (ret < 0)
	153	return ret;
	154
2dac9217 MB	155	return 0;
	156	}
	157
	158	static struct snd_soc_ops zylonite_voice_ops = {
	159	.hw_params = zylonite_voice_hw_params,
	160	};
	161
	162	static struct snd_soc_dai_link zylonite_dai[] = {
	163	{
	164	.name = "AC97",
	165	.stream_name = "AC97 HiFi",
f0fba2ad LG	166	.codec_name = "wm9713-codec",
f0fba2ad LG	167	.platform_name = "pxa-pcm-audio",
4bfc4e25	168	.cpu_dai_name = "pxa2xx-ac97",
efd69479	169	.codec_dai_name = "wm9713-hifi",
2dac9217 MB	170	.init = zylonite_wm9713_init,
	171	},
	172	{
	173	.name = "AC97 Aux",
	174	.stream_name = "AC97 Aux",
f0fba2ad LG	175	.codec_name = "wm9713-codec",
f0fba2ad LG	176	.platform_name = "pxa-pcm-audio",
4bfc4e25	177	.cpu_dai_name = "pxa2xx-ac97-aux",
efd69479	178	.codec_dai_name = "wm9713-aux",
2dac9217 MB	179	},
	180	{
	181	.name = "WM9713 Voice",
	182	.stream_name = "WM9713 Voice",
f0fba2ad LG	183	.codec_name = "wm9713-codec",
	184	.platform_name = "pxa-pcm-audio",
	185	.cpu_dai_name = "pxa-ssp-dai.2",
efd69479	186	.codec_dai_name = "wm9713-voice",
2dac9217 MB	187	.ops = &zylonite_voice_ops,
	188	},
	189	};
	190
e7361ec4	191	static int zylonite_probe(struct snd_soc_card *card)
2c782f59 MB	192	{
	193	int ret;
	194
	195	if (clk_pout) {
	196	pout = clk_get(NULL, "CLK_POUT");
	197	if (IS_ERR(pout)) {
eff919ac	198	dev_err(card->dev, "Unable to obtain CLK_POUT: %ld\n",
2c782f59 MB	199	PTR_ERR(pout));
	200	return PTR_ERR(pout);
	201	}
	202
	203	ret = clk_enable(pout);
	204	if (ret != 0) {
eff919ac	205	dev_err(card->dev, "Unable to enable CLK_POUT: %d\n",
2c782f59 MB	206	ret);
	207	clk_put(pout);
	208	return ret;
	209	}
	210
eff919ac	211	dev_dbg(card->dev, "MCLK enabled at %luHz\n",
2c782f59 MB	212	clk_get_rate(pout));
	213	}
	214
	215	return 0;
	216	}
	217
e7361ec4	218	static int zylonite_remove(struct snd_soc_card *card)
2c782f59 MB	219	{
	220	if (clk_pout) {
	221	clk_disable(pout);
	222	clk_put(pout);
	223	}
	224
	225	return 0;
	226	}
	227
70b2ac12	228	static int zylonite_suspend_post(struct snd_soc_card *card)
2c782f59 MB	229	{
	230	if (clk_pout)
	231	clk_disable(pout);
	232
	233	return 0;
	234	}
	235
70b2ac12	236	static int zylonite_resume_pre(struct snd_soc_card *card)
2c782f59 MB	237	{
	238	int ret = 0;
	239
	240	if (clk_pout) {
	241	ret = clk_enable(pout);
	242	if (ret != 0)
eff919ac	243	dev_err(card->dev, "Unable to enable CLK_POUT: %d\n",
2c782f59 MB	244	ret);
	245	}
	246
	247	return ret;
	248	}
	249
2dac9217 MB	250	static struct snd_soc_card zylonite = {
2dac9217 MB	251	.name = "Zylonite",
561c6a17	252	.owner = THIS_MODULE,
2c782f59 MB	253	.probe = &zylonite_probe,
	254	.remove = &zylonite_remove,
	255	.suspend_post = &zylonite_suspend_post,
	256	.resume_pre = &zylonite_resume_pre,
2dac9217 MB	257	.dai_link = zylonite_dai,
2dac9217 MB	258	.num_links = ARRAY_SIZE(zylonite_dai),
2dac9217 MB	259	};
	260
	261	static struct platform_device *zylonite_snd_ac97_device;
	262
	263	static int __init zylonite_init(void)
	264	{
	265	int ret;
	266
	267	zylonite_snd_ac97_device = platform_device_alloc("soc-audio", -1);
	268	if (!zylonite_snd_ac97_device)
	269	return -ENOMEM;
	270
f0fba2ad	271	platform_set_drvdata(zylonite_snd_ac97_device, &zylonite);
2dac9217 MB	272
	273	ret = platform_device_add(zylonite_snd_ac97_device);
	274	if (ret != 0)
	275	platform_device_put(zylonite_snd_ac97_device);
	276
	277	return ret;
	278	}
	279
	280	static void __exit zylonite_exit(void)
	281	{
	282	platform_device_unregister(zylonite_snd_ac97_device);
	283	}
	284
	285	module_init(zylonite_init);
	286	module_exit(zylonite_exit);
	287
	288	MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
	289	MODULE_DESCRIPTION("ALSA SoC WM9713 Zylonite");
	290	MODULE_LICENSE("GPL");