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

// SPDX-License-Identifier: GPL-2.0-or-later
/*
 * zylonite.c  --  SoC audio for Zylonite
 *
 * Copyright 2008 Wolfson Microelectronics PLC.
 * Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
 */

#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,
};

SND_SOC_DAILINK_DEFS(ac97,
	DAILINK_COMP_ARRAY(COMP_CPU("pxa2xx-ac97")),
	DAILINK_COMP_ARRAY(COMP_CODEC("wm9713-codec", "wm9713-hifi")),
	DAILINK_COMP_ARRAY(COMP_PLATFORM("pxa-pcm-audio")));

SND_SOC_DAILINK_DEFS(ac97_aux,
	DAILINK_COMP_ARRAY(COMP_CPU("pxa2xx-ac97-aux")),
	DAILINK_COMP_ARRAY(COMP_CODEC("wm9713-codec", "wm9713-aux")),
	DAILINK_COMP_ARRAY(COMP_PLATFORM("pxa-pcm-audio")));

SND_SOC_DAILINK_DEFS(voice,
	DAILINK_COMP_ARRAY(COMP_CPU("pxa-ssp-dai.2")),
	DAILINK_COMP_ARRAY(COMP_CODEC("wm9713-codec", "wm9713-voice")),
	DAILINK_COMP_ARRAY(COMP_PLATFORM("pxa-pcm-audio")));

static struct snd_soc_dai_link zylonite_dai[] = {
{
	.name = "AC97",
	.stream_name = "AC97 HiFi",
	.init = zylonite_wm9713_init,
	SND_SOC_DAILINK_REG(ac97),
},
{
	.name = "AC97 Aux",
	.stream_name = "AC97 Aux",
	SND_SOC_DAILINK_REG(ac97_aux),
},
{
	.name = "WM9713 Voice",
	.stream_name = "WM9713 Voice",
	.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
		   SND_SOC_DAIFMT_CBS_CFS,
	.ops = &zylonite_voice_ops,
	SND_SOC_DAILINK_REG(voice),
},
};

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
2874c5fd	1	// SPDX-License-Identifier: GPL-2.0-or-later
2dac9217 MB	2	/*
	3	* zylonite.c -- SoC audio for Zylonite
	4	*
	5	* Copyright 2008 Wolfson Microelectronics PLC.
	6	* Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
2dac9217 MB	7	*/
	8
	9	#include <linux/module.h>
	10	#include <linux/moduleparam.h>
	11	#include <linux/device.h>
2c782f59	12	#include <linux/clk.h>
2dac9217 MB	13	#include <linux/i2c.h>
	14	#include <sound/core.h>
	15	#include <sound/pcm.h>
	16	#include <sound/pcm_params.h>
	17	#include <sound/soc.h>
2dac9217 MB	18
2dac9217 MB	19	#include "../codecs/wm9713.h"
2dac9217 MB	20	#include "pxa-ssp.h"
2dac9217 MB	21
2c782f59 MB	22	/*
	23	* There is a physical switch SW15 on the board which changes the MCLK
	24	* for the WM9713 between the standard AC97 master clock and the
	25	* output of the CLK_POUT signal from the PXA.
	26	*/
	27	static int clk_pout;
	28	module_param(clk_pout, int, 0);
	29	MODULE_PARM_DESC(clk_pout, "Use CLK_POUT as WM9713 MCLK (SW15 on board).");
	30
	31	static struct clk *pout;
	32
2dac9217 MB	33	static struct snd_soc_card zylonite;
	34
	35	static const struct snd_soc_dapm_widget zylonite_dapm_widgets[] = {
	36	SND_SOC_DAPM_HP("Headphone", NULL),
	37	SND_SOC_DAPM_MIC("Headset Microphone", NULL),
	38	SND_SOC_DAPM_MIC("Handset Microphone", NULL),
	39	SND_SOC_DAPM_SPK("Multiactor", NULL),
	40	SND_SOC_DAPM_SPK("Headset Earpiece", NULL),
	41	};
	42
	43	/* Currently supported audio map */
	44	static const struct snd_soc_dapm_route audio_map[] = {
	45
	46	/* Headphone output connected to HPL/HPR */
	47	{ "Headphone", NULL, "HPL" },
	48	{ "Headphone", NULL, "HPR" },
	49
	50	/* On-board earpiece */
	51	{ "Headset Earpiece", NULL, "OUT3" },
	52
	53	/* Headphone mic */
	54	{ "MIC2A", NULL, "Mic Bias" },
	55	{ "Mic Bias", NULL, "Headset Microphone" },
	56
	57	/* On-board mic */
	58	{ "MIC1", NULL, "Mic Bias" },
	59	{ "Mic Bias", NULL, "Handset Microphone" },
	60
	61	/* Multiactor differentially connected over SPKL/SPKR */
	62	{ "Multiactor", NULL, "SPKL" },
	63	{ "Multiactor", NULL, "SPKR" },
	64	};
	65
f0fba2ad	66	static int zylonite_wm9713_init(struct snd_soc_pcm_runtime *rtd)
2dac9217	67	{
2c782f59	68	if (clk_pout)
f0fba2ad	69	snd_soc_dai_set_pll(rtd->codec_dai, 0, 0,
85488037	70	clk_get_rate(pout), 0);
2dac9217	71
2dac9217 MB	72	return 0;
	73	}
	74
	75	static int zylonite_voice_hw_params(struct snd_pcm_substream *substream,
	76	struct snd_pcm_hw_params *params)
	77	{
	78	struct snd_soc_pcm_runtime *rtd = substream->private_data;
f0fba2ad LG	79	struct snd_soc_dai *codec_dai = rtd->codec_dai;
f0fba2ad LG	80	struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
2dac9217 MB	81	unsigned int wm9713_div = 0;
2dac9217 MB	82	int ret = 0;
85fab780	83	int rate = params_rate(params);
85fab780 MB	84
	85	/* Only support ratios that we can generate neatly from the AC97
	86	* based master clock - in particular, this excludes 44.1kHz.
	87	* In most applications the voice DAC will be used for telephony
	88	* data so multiples of 8kHz will be the common case.
	89	*/
	90	switch (rate) {
2dac9217 MB	91	case 8000:
2dac9217 MB	92	wm9713_div = 12;
2dac9217 MB	93	break;
	94	case 16000:
	95	wm9713_div = 6;
2dac9217 MB	96	break;
2dac9217 MB	97	case 48000:
2dac9217	98	wm9713_div = 2;
2dac9217	99	break;
85fab780 MB	100	default:
	101	/* Don't support OSS emulation */
	102	return -EINVAL;
2dac9217 MB	103	}
2dac9217 MB	104
85fab780	105	ret = snd_soc_dai_set_sysclk(cpu_dai, PXA_SSP_CLK_AUDIO, 0, 1);
2dac9217 MB	106	if (ret < 0)
	107	return ret;
	108
2c782f59 MB	109	if (clk_pout)
	110	ret = snd_soc_dai_set_clkdiv(codec_dai, WM9713_PCMCLK_PLL_DIV,
	111	WM9713_PCMDIV(wm9713_div));
	112	else
	113	ret = snd_soc_dai_set_clkdiv(codec_dai, WM9713_PCMCLK_DIV,
	114	WM9713_PCMDIV(wm9713_div));
2dac9217 MB	115	if (ret < 0)
	116	return ret;
	117
	118	return 0;
	119	}
	120
943b7311	121	static const struct snd_soc_ops zylonite_voice_ops = {
2dac9217 MB	122	.hw_params = zylonite_voice_hw_params,
	123	};
	124
1129efb0 KM	125	SND_SOC_DAILINK_DEFS(ac97,
	126	DAILINK_COMP_ARRAY(COMP_CPU("pxa2xx-ac97")),
	127	DAILINK_COMP_ARRAY(COMP_CODEC("wm9713-codec", "wm9713-hifi")),
	128	DAILINK_COMP_ARRAY(COMP_PLATFORM("pxa-pcm-audio")));
	129
	130	SND_SOC_DAILINK_DEFS(ac97_aux,
	131	DAILINK_COMP_ARRAY(COMP_CPU("pxa2xx-ac97-aux")),
	132	DAILINK_COMP_ARRAY(COMP_CODEC("wm9713-codec", "wm9713-aux")),
	133	DAILINK_COMP_ARRAY(COMP_PLATFORM("pxa-pcm-audio")));
	134
	135	SND_SOC_DAILINK_DEFS(voice,
	136	DAILINK_COMP_ARRAY(COMP_CPU("pxa-ssp-dai.2")),
	137	DAILINK_COMP_ARRAY(COMP_CODEC("wm9713-codec", "wm9713-voice")),
	138	DAILINK_COMP_ARRAY(COMP_PLATFORM("pxa-pcm-audio")));
	139
2dac9217 MB	140	static struct snd_soc_dai_link zylonite_dai[] = {
	141	{
	142	.name = "AC97",
	143	.stream_name = "AC97 HiFi",
2dac9217	144	.init = zylonite_wm9713_init,
1129efb0	145	SND_SOC_DAILINK_REG(ac97),
2dac9217 MB	146	},
	147	{
	148	.name = "AC97 Aux",
	149	.stream_name = "AC97 Aux",
1129efb0	150	SND_SOC_DAILINK_REG(ac97_aux),
2dac9217 MB	151	},
	152	{
	153	.name = "WM9713 Voice",
	154	.stream_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	157	.ops = &zylonite_voice_ops,
1129efb0	158	SND_SOC_DAILINK_REG(voice),
2dac9217 MB	159	},
	160	};
	161
e7361ec4	162	static int zylonite_probe(struct snd_soc_card *card)
2c782f59 MB	163	{
	164	int ret;
	165
	166	if (clk_pout) {
	167	pout = clk_get(NULL, "CLK_POUT");
	168	if (IS_ERR(pout)) {
eff919ac	169	dev_err(card->dev, "Unable to obtain CLK_POUT: %ld\n",
2c782f59 MB	170	PTR_ERR(pout));
	171	return PTR_ERR(pout);
	172	}
	173
	174	ret = clk_enable(pout);
	175	if (ret != 0) {
eff919ac	176	dev_err(card->dev, "Unable to enable CLK_POUT: %d\n",
2c782f59 MB	177	ret);
	178	clk_put(pout);
	179	return ret;
	180	}
	181
eff919ac	182	dev_dbg(card->dev, "MCLK enabled at %luHz\n",
2c782f59 MB	183	clk_get_rate(pout));
	184	}
	185
	186	return 0;
	187	}
	188
e7361ec4	189	static int zylonite_remove(struct snd_soc_card *card)
2c782f59 MB	190	{
	191	if (clk_pout) {
	192	clk_disable(pout);
	193	clk_put(pout);
	194	}
	195
	196	return 0;
	197	}
	198
70b2ac12	199	static int zylonite_suspend_post(struct snd_soc_card *card)
2c782f59 MB	200	{
	201	if (clk_pout)
	202	clk_disable(pout);
	203
	204	return 0;
	205	}
	206
70b2ac12	207	static int zylonite_resume_pre(struct snd_soc_card *card)
2c782f59 MB	208	{
	209	int ret = 0;
	210
	211	if (clk_pout) {
	212	ret = clk_enable(pout);
	213	if (ret != 0)
eff919ac	214	dev_err(card->dev, "Unable to enable CLK_POUT: %d\n",
2c782f59 MB	215	ret);
	216	}
	217
	218	return ret;
	219	}
	220
2dac9217 MB	221	static struct snd_soc_card zylonite = {
2dac9217 MB	222	.name = "Zylonite",
561c6a17	223	.owner = THIS_MODULE,
2c782f59 MB	224	.probe = &zylonite_probe,
	225	.remove = &zylonite_remove,
	226	.suspend_post = &zylonite_suspend_post,
	227	.resume_pre = &zylonite_resume_pre,
2dac9217 MB	228	.dai_link = zylonite_dai,
2dac9217 MB	229	.num_links = ARRAY_SIZE(zylonite_dai),
a9576cbb LPC	230
	231	.dapm_widgets = zylonite_dapm_widgets,
	232	.num_dapm_widgets = ARRAY_SIZE(zylonite_dapm_widgets),
	233	.dapm_routes = audio_map,
	234	.num_dapm_routes = ARRAY_SIZE(audio_map),
2dac9217 MB	235	};
	236
	237	static struct platform_device *zylonite_snd_ac97_device;
	238
	239	static int __init zylonite_init(void)
	240	{
	241	int ret;
	242
	243	zylonite_snd_ac97_device = platform_device_alloc("soc-audio", -1);
	244	if (!zylonite_snd_ac97_device)
	245	return -ENOMEM;
	246
f0fba2ad	247	platform_set_drvdata(zylonite_snd_ac97_device, &zylonite);
2dac9217 MB	248
	249	ret = platform_device_add(zylonite_snd_ac97_device);
	250	if (ret != 0)
	251	platform_device_put(zylonite_snd_ac97_device);
	252
	253	return ret;
	254	}
	255
	256	static void __exit zylonite_exit(void)
	257	{
	258	platform_device_unregister(zylonite_snd_ac97_device);
	259	}
	260
	261	module_init(zylonite_init);
	262	module_exit(zylonite_exit);
	263
	264	MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
	265	MODULE_DESCRIPTION("ALSA SoC WM9713 Zylonite");
	266	MODULE_LICENSE("GPL");