[deliverable/linux.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 <sound/soc-dapm.h>

#include "../codecs/wm9713.h"
#include "pxa2xx-pcm.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_codec *codec)
{
	if (clk_pout)
		snd_soc_dai_set_pll(&codec->dai[0], 0, clk_get_rate(pout), 0);

	snd_soc_dapm_new_controls(codec, zylonite_dapm_widgets,
				  ARRAY_SIZE(zylonite_dapm_widgets));

	snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));

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

	snd_soc_dapm_sync(codec);
	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->dai->codec_dai;
	struct snd_soc_dai *cpu_dai = rtd->dai->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, 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",
	.cpu_dai = &pxa_ac97_dai[PXA2XX_DAI_AC97_HIFI],
	.codec_dai = &wm9713_dai[WM9713_DAI_AC97_HIFI],
	.init = zylonite_wm9713_init,
},
{
	.name = "AC97 Aux",
	.stream_name = "AC97 Aux",
	.cpu_dai = &pxa_ac97_dai[PXA2XX_DAI_AC97_AUX],
	.codec_dai = &wm9713_dai[WM9713_DAI_AC97_AUX],
},
{
	.name = "WM9713 Voice",
	.stream_name = "WM9713 Voice",
	.cpu_dai = &pxa_ssp_dai[PXA_DAI_SSP3],
	.codec_dai = &wm9713_dai[WM9713_DAI_PCM_VOICE],
	.ops = &zylonite_voice_ops,
},
};

static int zylonite_probe(struct platform_device *pdev)
{
	int ret;

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

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

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

	return 0;
}

static int zylonite_remove(struct platform_device *pdev)
{
	if (clk_pout) {
		clk_disable(pout);
		clk_put(pout);
	}

	return 0;
}

static int zylonite_suspend_post(struct platform_device *pdev,
				 pm_message_t state)
{
	if (clk_pout)
		clk_disable(pout);

	return 0;
}

static int zylonite_resume_pre(struct platform_device *pdev)
{
	int ret = 0;

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

	return ret;
}

static struct snd_soc_card zylonite = {
	.name = "Zylonite",
	.probe = &zylonite_probe,
	.remove = &zylonite_remove,
	.suspend_post = &zylonite_suspend_post,
	.resume_pre = &zylonite_resume_pre,
	.platform = &pxa2xx_soc_platform,
	.dai_link = zylonite_dai,
	.num_links = ARRAY_SIZE(zylonite_dai),
};

static struct snd_soc_device zylonite_snd_ac97_devdata = {
	.card = &zylonite,
	.codec_dev = &soc_codec_dev_wm9713,
};

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_snd_ac97_devdata);
	zylonite_snd_ac97_devdata.dev = &zylonite_snd_ac97_device->dev;

	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>
	23	#include <sound/soc-dapm.h>
	24
	25	#include "../codecs/wm9713.h"
	26	#include "pxa2xx-pcm.h"
	27	#include "pxa2xx-ac97.h"
	28	#include "pxa-ssp.h"
	29
2c782f59 MB	30	/*
	31	* There is a physical switch SW15 on the board which changes the MCLK
	32	* for the WM9713 between the standard AC97 master clock and the
	33	* output of the CLK_POUT signal from the PXA.
	34	*/
	35	static int clk_pout;
	36	module_param(clk_pout, int, 0);
	37	MODULE_PARM_DESC(clk_pout, "Use CLK_POUT as WM9713 MCLK (SW15 on board).");
	38
	39	static struct clk *pout;
	40
2dac9217 MB	41	static struct snd_soc_card zylonite;
	42
	43	static const struct snd_soc_dapm_widget zylonite_dapm_widgets[] = {
	44	SND_SOC_DAPM_HP("Headphone", NULL),
	45	SND_SOC_DAPM_MIC("Headset Microphone", NULL),
	46	SND_SOC_DAPM_MIC("Handset Microphone", NULL),
	47	SND_SOC_DAPM_SPK("Multiactor", NULL),
	48	SND_SOC_DAPM_SPK("Headset Earpiece", NULL),
	49	};
	50
	51	/* Currently supported audio map */
	52	static const struct snd_soc_dapm_route audio_map[] = {
	53
	54	/* Headphone output connected to HPL/HPR */
	55	{ "Headphone", NULL, "HPL" },
	56	{ "Headphone", NULL, "HPR" },
	57
	58	/* On-board earpiece */
	59	{ "Headset Earpiece", NULL, "OUT3" },
	60
	61	/* Headphone mic */
	62	{ "MIC2A", NULL, "Mic Bias" },
	63	{ "Mic Bias", NULL, "Headset Microphone" },
	64
	65	/* On-board mic */
	66	{ "MIC1", NULL, "Mic Bias" },
	67	{ "Mic Bias", NULL, "Handset Microphone" },
	68
	69	/* Multiactor differentially connected over SPKL/SPKR */
	70	{ "Multiactor", NULL, "SPKL" },
	71	{ "Multiactor", NULL, "SPKR" },
	72	};
	73
	74	static int zylonite_wm9713_init(struct snd_soc_codec *codec)
	75	{
2c782f59 MB	76	if (clk_pout)
2c782f59 MB	77	snd_soc_dai_set_pll(&codec->dai[0], 0, clk_get_rate(pout), 0);
2dac9217 MB	78
	79	snd_soc_dapm_new_controls(codec, zylonite_dapm_widgets,
	80	ARRAY_SIZE(zylonite_dapm_widgets));
	81
	82	snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));
	83
	84	/* Static setup for now */
	85	snd_soc_dapm_enable_pin(codec, "Headphone");
	86	snd_soc_dapm_enable_pin(codec, "Headset Earpiece");
	87
	88	snd_soc_dapm_sync(codec);
	89	return 0;
	90	}
	91
	92	static int zylonite_voice_hw_params(struct snd_pcm_substream *substream,
	93	struct snd_pcm_hw_params *params)
	94	{
	95	struct snd_soc_pcm_runtime *rtd = substream->private_data;
	96	struct snd_soc_dai *codec_dai = rtd->dai->codec_dai;
	97	struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
a435869c	98	unsigned int pll_out = 0;
2dac9217 MB	99	unsigned int wm9713_div = 0;
2dac9217 MB	100	int ret = 0;
85fab780 MB	101	int rate = params_rate(params);
	102	int width = snd_pcm_format_physical_width(params_format(params));
	103
	104	/* Only support ratios that we can generate neatly from the AC97
	105	* based master clock - in particular, this excludes 44.1kHz.
	106	* In most applications the voice DAC will be used for telephony
	107	* data so multiples of 8kHz will be the common case.
	108	*/
	109	switch (rate) {
2dac9217 MB	110	case 8000:
2dac9217 MB	111	wm9713_div = 12;
2dac9217 MB	112	break;
	113	case 16000:
	114	wm9713_div = 6;
2dac9217 MB	115	break;
2dac9217 MB	116	case 48000:
2dac9217	117	wm9713_div = 2;
2dac9217	118	break;
85fab780 MB	119	default:
	120	/* Don't support OSS emulation */
	121	return -EINVAL;
2dac9217 MB	122	}
2dac9217 MB	123
85fab780 MB	124	/* Add 1 to the width for the leading clock cycle */
85fab780 MB	125	pll_out = rate * (width + 1) * 8;
2dac9217	126
85fab780	127	ret = snd_soc_dai_set_sysclk(cpu_dai, PXA_SSP_CLK_AUDIO, 0, 1);
2dac9217 MB	128	if (ret < 0)
	129	return ret;
	130
a435869c MB	131	ret = snd_soc_dai_set_pll(cpu_dai, 0, 0, pll_out);
	132	if (ret < 0)
	133	return ret;
	134
2c782f59 MB	135	if (clk_pout)
	136	ret = snd_soc_dai_set_clkdiv(codec_dai, WM9713_PCMCLK_PLL_DIV,
	137	WM9713_PCMDIV(wm9713_div));
	138	else
	139	ret = snd_soc_dai_set_clkdiv(codec_dai, WM9713_PCMCLK_DIV,
	140	WM9713_PCMDIV(wm9713_div));
2dac9217 MB	141	if (ret < 0)
	142	return ret;
	143
85fab780 MB	144	ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S \|
	145	SND_SOC_DAIFMT_NB_NF \| SND_SOC_DAIFMT_CBS_CFS);
	146	if (ret < 0)
	147	return ret;
	148
	149	ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S \|
	150	SND_SOC_DAIFMT_NB_NF \| SND_SOC_DAIFMT_CBS_CFS);
	151	if (ret < 0)
	152	return ret;
	153
2dac9217 MB	154	return 0;
	155	}
	156
	157	static struct snd_soc_ops zylonite_voice_ops = {
	158	.hw_params = zylonite_voice_hw_params,
	159	};
	160
	161	static struct snd_soc_dai_link zylonite_dai[] = {
	162	{
	163	.name = "AC97",
	164	.stream_name = "AC97 HiFi",
	165	.cpu_dai = &pxa_ac97_dai[PXA2XX_DAI_AC97_HIFI],
	166	.codec_dai = &wm9713_dai[WM9713_DAI_AC97_HIFI],
	167	.init = zylonite_wm9713_init,
	168	},
	169	{
	170	.name = "AC97 Aux",
	171	.stream_name = "AC97 Aux",
	172	.cpu_dai = &pxa_ac97_dai[PXA2XX_DAI_AC97_AUX],
	173	.codec_dai = &wm9713_dai[WM9713_DAI_AC97_AUX],
	174	},
	175	{
	176	.name = "WM9713 Voice",
	177	.stream_name = "WM9713 Voice",
	178	.cpu_dai = &pxa_ssp_dai[PXA_DAI_SSP3],
	179	.codec_dai = &wm9713_dai[WM9713_DAI_PCM_VOICE],
	180	.ops = &zylonite_voice_ops,
	181	},
	182	};
	183
2c782f59 MB	184	static int zylonite_probe(struct platform_device *pdev)
	185	{
	186	int ret;
	187
	188	if (clk_pout) {
	189	pout = clk_get(NULL, "CLK_POUT");
	190	if (IS_ERR(pout)) {
	191	dev_err(&pdev->dev, "Unable to obtain CLK_POUT: %ld\n",
	192	PTR_ERR(pout));
	193	return PTR_ERR(pout);
	194	}
	195
	196	ret = clk_enable(pout);
	197	if (ret != 0) {
	198	dev_err(&pdev->dev, "Unable to enable CLK_POUT: %d\n",
	199	ret);
	200	clk_put(pout);
	201	return ret;
	202	}
	203
	204	dev_dbg(&pdev->dev, "MCLK enabled at %luHz\n",
	205	clk_get_rate(pout));
	206	}
	207
	208	return 0;
	209	}
	210
	211	static int zylonite_remove(struct platform_device *pdev)
	212	{
	213	if (clk_pout) {
	214	clk_disable(pout);
	215	clk_put(pout);
	216	}
	217
	218	return 0;
	219	}
	220
	221	static int zylonite_suspend_post(struct platform_device *pdev,
	222	pm_message_t state)
	223	{
	224	if (clk_pout)
	225	clk_disable(pout);
	226
	227	return 0;
	228	}
	229
	230	static int zylonite_resume_pre(struct platform_device *pdev)
	231	{
	232	int ret = 0;
	233
	234	if (clk_pout) {
	235	ret = clk_enable(pout);
	236	if (ret != 0)
	237	dev_err(&pdev->dev, "Unable to enable CLK_POUT: %d\n",
	238	ret);
	239	}
	240
	241	return ret;
	242	}
	243
2dac9217 MB	244	static struct snd_soc_card zylonite = {
2dac9217 MB	245	.name = "Zylonite",
2c782f59 MB	246	.probe = &zylonite_probe,
	247	.remove = &zylonite_remove,
	248	.suspend_post = &zylonite_suspend_post,
	249	.resume_pre = &zylonite_resume_pre,
87689d56	250	.platform = &pxa2xx_soc_platform,
2dac9217 MB	251	.dai_link = zylonite_dai,
	252	.num_links = ARRAY_SIZE(zylonite_dai),
	253	};
	254
	255	static struct snd_soc_device zylonite_snd_ac97_devdata = {
	256	.card = &zylonite,
2dac9217 MB	257	.codec_dev = &soc_codec_dev_wm9713,
	258	};
	259
	260	static struct platform_device *zylonite_snd_ac97_device;
	261
	262	static int __init zylonite_init(void)
	263	{
	264	int ret;
	265
	266	zylonite_snd_ac97_device = platform_device_alloc("soc-audio", -1);
	267	if (!zylonite_snd_ac97_device)
	268	return -ENOMEM;
	269
	270	platform_set_drvdata(zylonite_snd_ac97_device,
	271	&zylonite_snd_ac97_devdata);
	272	zylonite_snd_ac97_devdata.dev = &zylonite_snd_ac97_device->dev;
	273
	274	ret = platform_device_add(zylonite_snd_ac97_device);
	275	if (ret != 0)
	276	platform_device_put(zylonite_snd_ac97_device);
	277
	278	return ret;
	279	}
	280
	281	static void __exit zylonite_exit(void)
	282	{
	283	platform_device_unregister(zylonite_snd_ac97_device);
	284	}
	285
	286	module_init(zylonite_init);
	287	module_exit(zylonite_exit);
	288
	289	MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
	290	MODULE_DESCRIPTION("ALSA SoC WM9713 Zylonite");
	291	MODULE_LICENSE("GPL");