[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-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");

	snd_soc_dapm_sync(dapm);
	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 = "pxa-ac97.0",
	.codec_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 = "pxa-ac97.1",
	.codec_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_name = "wm9713-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,
	.dai_link = zylonite_dai,
	.num_links = ARRAY_SIZE(zylonite_dai),
	.owner = THIS_MODULE,
};

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