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

	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 wm9713_div = 0;
	int ret = 0;
	int rate = params_rate(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;
	}

	ret = snd_soc_dai_set_sysclk(cpu_dai, PXA_SSP_CLK_AUDIO, 0, 1);
	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;

	return 0;
}

static const 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",
	.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
		   SND_SOC_DAIFMT_CBS_CFS,
	.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),

	.dapm_widgets = zylonite_dapm_widgets,
	.num_dapm_widgets = ARRAY_SIZE(zylonite_dapm_widgets),
	.dapm_routes = audio_map,
	.num_dapm_routes = ARRAY_SIZE(audio_map),
};

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 "pxa-ssp.h"
2dac9217 MB	26
2c782f59 MB	27	/*
	28	* There is a physical switch SW15 on the board which changes the MCLK
	29	* for the WM9713 between the standard AC97 master clock and the
	30	* output of the CLK_POUT signal from the PXA.
	31	*/
	32	static int clk_pout;
	33	module_param(clk_pout, int, 0);
	34	MODULE_PARM_DESC(clk_pout, "Use CLK_POUT as WM9713 MCLK (SW15 on board).");
	35
	36	static struct clk *pout;
	37
2dac9217 MB	38	static struct snd_soc_card zylonite;
	39
	40	static const struct snd_soc_dapm_widget zylonite_dapm_widgets[] = {
	41	SND_SOC_DAPM_HP("Headphone", NULL),
	42	SND_SOC_DAPM_MIC("Headset Microphone", NULL),
	43	SND_SOC_DAPM_MIC("Handset Microphone", NULL),
	44	SND_SOC_DAPM_SPK("Multiactor", NULL),
	45	SND_SOC_DAPM_SPK("Headset Earpiece", NULL),
	46	};
	47
	48	/* Currently supported audio map */
	49	static const struct snd_soc_dapm_route audio_map[] = {
	50
	51	/* Headphone output connected to HPL/HPR */
	52	{ "Headphone", NULL, "HPL" },
	53	{ "Headphone", NULL, "HPR" },
	54
	55	/* On-board earpiece */
	56	{ "Headset Earpiece", NULL, "OUT3" },
	57
	58	/* Headphone mic */
	59	{ "MIC2A", NULL, "Mic Bias" },
	60	{ "Mic Bias", NULL, "Headset Microphone" },
	61
	62	/* On-board mic */
	63	{ "MIC1", NULL, "Mic Bias" },
	64	{ "Mic Bias", NULL, "Handset Microphone" },
	65
	66	/* Multiactor differentially connected over SPKL/SPKR */
	67	{ "Multiactor", NULL, "SPKL" },
	68	{ "Multiactor", NULL, "SPKR" },
	69	};
	70
f0fba2ad	71	static int zylonite_wm9713_init(struct snd_soc_pcm_runtime *rtd)
2dac9217	72	{
2c782f59	73	if (clk_pout)
f0fba2ad	74	snd_soc_dai_set_pll(rtd->codec_dai, 0, 0,
85488037	75	clk_get_rate(pout), 0);
2dac9217	76
2dac9217 MB	77	return 0;
	78	}
	79
	80	static int zylonite_voice_hw_params(struct snd_pcm_substream *substream,
	81	struct snd_pcm_hw_params *params)
	82	{
	83	struct snd_soc_pcm_runtime *rtd = substream->private_data;
f0fba2ad LG	84	struct snd_soc_dai *codec_dai = rtd->codec_dai;
f0fba2ad LG	85	struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
2dac9217 MB	86	unsigned int wm9713_div = 0;
2dac9217 MB	87	int ret = 0;
85fab780	88	int rate = params_rate(params);
85fab780 MB	89
	90	/* Only support ratios that we can generate neatly from the AC97
	91	* based master clock - in particular, this excludes 44.1kHz.
	92	* In most applications the voice DAC will be used for telephony
	93	* data so multiples of 8kHz will be the common case.
	94	*/
	95	switch (rate) {
2dac9217 MB	96	case 8000:
2dac9217 MB	97	wm9713_div = 12;
2dac9217 MB	98	break;
	99	case 16000:
	100	wm9713_div = 6;
2dac9217 MB	101	break;
2dac9217 MB	102	case 48000:
2dac9217	103	wm9713_div = 2;
2dac9217	104	break;
85fab780 MB	105	default:
	106	/* Don't support OSS emulation */
	107	return -EINVAL;
2dac9217 MB	108	}
2dac9217 MB	109
85fab780	110	ret = snd_soc_dai_set_sysclk(cpu_dai, PXA_SSP_CLK_AUDIO, 0, 1);
2dac9217 MB	111	if (ret < 0)
	112	return ret;
	113
2c782f59 MB	114	if (clk_pout)
	115	ret = snd_soc_dai_set_clkdiv(codec_dai, WM9713_PCMCLK_PLL_DIV,
	116	WM9713_PCMDIV(wm9713_div));
	117	else
	118	ret = snd_soc_dai_set_clkdiv(codec_dai, WM9713_PCMCLK_DIV,
	119	WM9713_PCMDIV(wm9713_div));
2dac9217 MB	120	if (ret < 0)
	121	return ret;
	122
	123	return 0;
	124	}
	125
943b7311	126	static const struct snd_soc_ops zylonite_voice_ops = {
2dac9217 MB	127	.hw_params = zylonite_voice_hw_params,
	128	};
	129
	130	static struct snd_soc_dai_link zylonite_dai[] = {
	131	{
	132	.name = "AC97",
	133	.stream_name = "AC97 HiFi",
f0fba2ad LG	134	.codec_name = "wm9713-codec",
f0fba2ad LG	135	.platform_name = "pxa-pcm-audio",
4bfc4e25	136	.cpu_dai_name = "pxa2xx-ac97",
efd69479	137	.codec_dai_name = "wm9713-hifi",
2dac9217 MB	138	.init = zylonite_wm9713_init,
	139	},
	140	{
	141	.name = "AC97 Aux",
	142	.stream_name = "AC97 Aux",
f0fba2ad LG	143	.codec_name = "wm9713-codec",
f0fba2ad LG	144	.platform_name = "pxa-pcm-audio",
4bfc4e25	145	.cpu_dai_name = "pxa2xx-ac97-aux",
efd69479	146	.codec_dai_name = "wm9713-aux",
2dac9217 MB	147	},
	148	{
	149	.name = "WM9713 Voice",
	150	.stream_name = "WM9713 Voice",
f0fba2ad LG	151	.codec_name = "wm9713-codec",
	152	.platform_name = "pxa-pcm-audio",
	153	.cpu_dai_name = "pxa-ssp-dai.2",
efd69479	154	.codec_dai_name = "wm9713-voice",
132c3096 LPC	155	.dai_fmt = SND_SOC_DAIFMT_I2S \| SND_SOC_DAIFMT_NB_NF \|
132c3096 LPC	156	SND_SOC_DAIFMT_CBS_CFS,
2dac9217 MB	157	.ops = &zylonite_voice_ops,
	158	},
	159	};
	160
e7361ec4	161	static int zylonite_probe(struct snd_soc_card *card)
2c782f59 MB	162	{
	163	int ret;
	164
	165	if (clk_pout) {
	166	pout = clk_get(NULL, "CLK_POUT");
	167	if (IS_ERR(pout)) {
eff919ac	168	dev_err(card->dev, "Unable to obtain CLK_POUT: %ld\n",
2c782f59 MB	169	PTR_ERR(pout));
	170	return PTR_ERR(pout);
	171	}
	172
	173	ret = clk_enable(pout);
	174	if (ret != 0) {
eff919ac	175	dev_err(card->dev, "Unable to enable CLK_POUT: %d\n",
2c782f59 MB	176	ret);
	177	clk_put(pout);
	178	return ret;
	179	}
	180
eff919ac	181	dev_dbg(card->dev, "MCLK enabled at %luHz\n",
2c782f59 MB	182	clk_get_rate(pout));
	183	}
	184
	185	return 0;
	186	}
	187
e7361ec4	188	static int zylonite_remove(struct snd_soc_card *card)
2c782f59 MB	189	{
	190	if (clk_pout) {
	191	clk_disable(pout);
	192	clk_put(pout);
	193	}
	194
	195	return 0;
	196	}
	197
70b2ac12	198	static int zylonite_suspend_post(struct snd_soc_card *card)
2c782f59 MB	199	{
	200	if (clk_pout)
	201	clk_disable(pout);
	202
	203	return 0;
	204	}
	205
70b2ac12	206	static int zylonite_resume_pre(struct snd_soc_card *card)
2c782f59 MB	207	{
	208	int ret = 0;
	209
	210	if (clk_pout) {
	211	ret = clk_enable(pout);
	212	if (ret != 0)
eff919ac	213	dev_err(card->dev, "Unable to enable CLK_POUT: %d\n",
2c782f59 MB	214	ret);
	215	}
	216
	217	return ret;
	218	}
	219
2dac9217 MB	220	static struct snd_soc_card zylonite = {
2dac9217 MB	221	.name = "Zylonite",
561c6a17	222	.owner = THIS_MODULE,
2c782f59 MB	223	.probe = &zylonite_probe,
	224	.remove = &zylonite_remove,
	225	.suspend_post = &zylonite_suspend_post,
	226	.resume_pre = &zylonite_resume_pre,
2dac9217 MB	227	.dai_link = zylonite_dai,
2dac9217 MB	228	.num_links = ARRAY_SIZE(zylonite_dai),
a9576cbb LPC	229
	230	.dapm_widgets = zylonite_dapm_widgets,
	231	.num_dapm_widgets = ARRAY_SIZE(zylonite_dapm_widgets),
	232	.dapm_routes = audio_map,
	233	.num_dapm_routes = ARRAY_SIZE(audio_map),
2dac9217 MB	234	};
	235
	236	static struct platform_device *zylonite_snd_ac97_device;
	237
	238	static int __init zylonite_init(void)
	239	{
	240	int ret;
	241
	242	zylonite_snd_ac97_device = platform_device_alloc("soc-audio", -1);
	243	if (!zylonite_snd_ac97_device)
	244	return -ENOMEM;
	245
f0fba2ad	246	platform_set_drvdata(zylonite_snd_ac97_device, &zylonite);
2dac9217 MB	247
	248	ret = platform_device_add(zylonite_snd_ac97_device);
	249	if (ret != 0)
	250	platform_device_put(zylonite_snd_ac97_device);
	251
	252	return ret;
	253	}
	254
	255	static void __exit zylonite_exit(void)
	256	{
	257	platform_device_unregister(zylonite_snd_ac97_device);
	258	}
	259
	260	module_init(zylonite_init);
	261	module_exit(zylonite_exit);
	262
	263	MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
	264	MODULE_DESCRIPTION("ALSA SoC WM9713 Zylonite");
	265	MODULE_LICENSE("GPL");