[deliverable/linux.git] / sound / soc / codecs / wl1273.c

/*
 * ALSA SoC WL1273 codec driver
 *
 * Author:      Matti Aaltonen, <matti.j.aaltonen@nokia.com>
 *
 * Copyright:   (C) 2010, 2011 Nokia Corporation
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * version 2 as published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA
 *
 */

#include <linux/mfd/wl1273-core.h>
#include <linux/slab.h>
#include <linux/module.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/soc.h>
#include <sound/initval.h>

#include "wl1273.h"

enum wl1273_mode { WL1273_MODE_BT, WL1273_MODE_FM_RX, WL1273_MODE_FM_TX };

/* codec private data */
struct wl1273_priv {
	enum wl1273_mode mode;
	struct wl1273_core *core;
	unsigned int channels;
};

static int snd_wl1273_fm_set_i2s_mode(struct wl1273_core *core,
				      int rate, int width)
{
	struct device *dev = &core->client->dev;
	int r = 0;
	u16 mode;

	dev_dbg(dev, "rate: %d\n", rate);
	dev_dbg(dev, "width: %d\n", width);

	mutex_lock(&core->lock);

	mode = core->i2s_mode & ~WL1273_IS2_WIDTH & ~WL1273_IS2_RATE;

	switch (rate) {
	case 48000:
		mode |= WL1273_IS2_RATE_48K;
		break;
	case 44100:
		mode |= WL1273_IS2_RATE_44_1K;
		break;
	case 32000:
		mode |= WL1273_IS2_RATE_32K;
		break;
	case 22050:
		mode |= WL1273_IS2_RATE_22_05K;
		break;
	case 16000:
		mode |= WL1273_IS2_RATE_16K;
		break;
	case 12000:
		mode |= WL1273_IS2_RATE_12K;
		break;
	case 11025:
		mode |= WL1273_IS2_RATE_11_025;
		break;
	case 8000:
		mode |= WL1273_IS2_RATE_8K;
		break;
	default:
		dev_err(dev, "Sampling rate: %d not supported\n", rate);
		r = -EINVAL;
		goto out;
	}

	switch (width) {
	case 16:
		mode |= WL1273_IS2_WIDTH_32;
		break;
	case 20:
		mode |= WL1273_IS2_WIDTH_40;
		break;
	case 24:
		mode |= WL1273_IS2_WIDTH_48;
		break;
	case 25:
		mode |= WL1273_IS2_WIDTH_50;
		break;
	case 30:
		mode |= WL1273_IS2_WIDTH_60;
		break;
	case 32:
		mode |= WL1273_IS2_WIDTH_64;
		break;
	case 40:
		mode |= WL1273_IS2_WIDTH_80;
		break;
	case 48:
		mode |= WL1273_IS2_WIDTH_96;
		break;
	case 64:
		mode |= WL1273_IS2_WIDTH_128;
		break;
	default:
		dev_err(dev, "Data width: %d not supported\n", width);
		r = -EINVAL;
		goto out;
	}

	dev_dbg(dev, "WL1273_I2S_DEF_MODE: 0x%04x\n",  WL1273_I2S_DEF_MODE);
	dev_dbg(dev, "core->i2s_mode: 0x%04x\n", core->i2s_mode);
	dev_dbg(dev, "mode: 0x%04x\n", mode);

	if (core->i2s_mode != mode) {
		r = core->write(core, WL1273_I2S_MODE_CONFIG_SET, mode);
		if (r)
			goto out;

		core->i2s_mode = mode;
		r = core->write(core, WL1273_AUDIO_ENABLE,
				WL1273_AUDIO_ENABLE_I2S);
		if (r)
			goto out;
	}
out:
	mutex_unlock(&core->lock);

	return r;
}

static int snd_wl1273_fm_set_channel_number(struct wl1273_core *core,
					    int channel_number)
{
	struct device *dev = &core->client->dev;
	int r = 0;

	dev_dbg(dev, "%s\n", __func__);

	mutex_lock(&core->lock);

	if (core->channel_number == channel_number)
		goto out;

	if (channel_number == 1 && core->mode == WL1273_MODE_RX)
		r = core->write(core, WL1273_MOST_MODE_SET, WL1273_RX_MONO);
	else if (channel_number == 1 && core->mode == WL1273_MODE_TX)
		r = core->write(core, WL1273_MONO_SET, WL1273_TX_MONO);
	else if (channel_number == 2 && core->mode == WL1273_MODE_RX)
		r = core->write(core, WL1273_MOST_MODE_SET, WL1273_RX_STEREO);
	else if (channel_number == 2 && core->mode == WL1273_MODE_TX)
		r = core->write(core, WL1273_MONO_SET, WL1273_TX_STEREO);
	else
		r = -EINVAL;
out:
	mutex_unlock(&core->lock);

	return r;
}

static int snd_wl1273_get_audio_route(struct snd_kcontrol *kcontrol,
				      struct snd_ctl_elem_value *ucontrol)
{
	struct snd_soc_codec *codec = snd_soc_kcontrol_codec(kcontrol);
	struct wl1273_priv *wl1273 = snd_soc_codec_get_drvdata(codec);

	ucontrol->value.enumerated.item[0] = wl1273->mode;

	return 0;
}

/*
 * TODO: Implement the audio routing in the driver. Now this control
 * only indicates the setting that has been done elsewhere (in the user
 * space).
 */
static const char * const wl1273_audio_route[] = { "Bt", "FmRx", "FmTx" };

static int snd_wl1273_set_audio_route(struct snd_kcontrol *kcontrol,
				      struct snd_ctl_elem_value *ucontrol)
{
	struct snd_soc_codec *codec = snd_soc_kcontrol_codec(kcontrol);
	struct wl1273_priv *wl1273 = snd_soc_codec_get_drvdata(codec);

	if (wl1273->mode == ucontrol->value.enumerated.item[0])
		return 0;

	/* Do not allow changes while stream is running */
	if (snd_soc_codec_is_active(codec))
		return -EPERM;

	if (ucontrol->value.enumerated.item[0] >=  ARRAY_SIZE(wl1273_audio_route))
		return -EINVAL;

	wl1273->mode = ucontrol->value.enumerated.item[0];

	return 1;
}

static SOC_ENUM_SINGLE_EXT_DECL(wl1273_enum, wl1273_audio_route);

static int snd_wl1273_fm_audio_get(struct snd_kcontrol *kcontrol,
				   struct snd_ctl_elem_value *ucontrol)
{
	struct snd_soc_codec *codec = snd_soc_kcontrol_codec(kcontrol);
	struct wl1273_priv *wl1273 = snd_soc_codec_get_drvdata(codec);

	dev_dbg(codec->dev, "%s: enter.\n", __func__);

	ucontrol->value.enumerated.item[0] = wl1273->core->audio_mode;

	return 0;
}

static int snd_wl1273_fm_audio_put(struct snd_kcontrol *kcontrol,
				   struct snd_ctl_elem_value *ucontrol)
{
	struct snd_soc_codec *codec = snd_soc_kcontrol_codec(kcontrol);
	struct wl1273_priv *wl1273 = snd_soc_codec_get_drvdata(codec);
	int val, r = 0;

	dev_dbg(codec->dev, "%s: enter.\n", __func__);

	val = ucontrol->value.enumerated.item[0];
	if (wl1273->core->audio_mode == val)
		return 0;

	r = wl1273->core->set_audio(wl1273->core, val);
	if (r < 0)
		return r;

	return 1;
}

static const char * const wl1273_audio_strings[] = { "Digital", "Analog" };

static SOC_ENUM_SINGLE_EXT_DECL(wl1273_audio_enum, wl1273_audio_strings);

static int snd_wl1273_fm_volume_get(struct snd_kcontrol *kcontrol,
				    struct snd_ctl_elem_value *ucontrol)
{
	struct snd_soc_codec *codec = snd_soc_kcontrol_codec(kcontrol);
	struct wl1273_priv *wl1273 = snd_soc_codec_get_drvdata(codec);

	dev_dbg(codec->dev, "%s: enter.\n", __func__);

	ucontrol->value.integer.value[0] = wl1273->core->volume;

	return 0;
}

static int snd_wl1273_fm_volume_put(struct snd_kcontrol *kcontrol,
				    struct snd_ctl_elem_value *ucontrol)
{
	struct snd_soc_codec *codec = snd_soc_kcontrol_codec(kcontrol);
	struct wl1273_priv *wl1273 = snd_soc_codec_get_drvdata(codec);
	int r;

	dev_dbg(codec->dev, "%s: enter.\n", __func__);

	r = wl1273->core->set_volume(wl1273->core,
				     ucontrol->value.integer.value[0]);
	if (r)
		return r;

	return 1;
}

static const struct snd_kcontrol_new wl1273_controls[] = {
	SOC_ENUM_EXT("Codec Mode", wl1273_enum,
		     snd_wl1273_get_audio_route, snd_wl1273_set_audio_route),
	SOC_ENUM_EXT("Audio Switch", wl1273_audio_enum,
		     snd_wl1273_fm_audio_get,  snd_wl1273_fm_audio_put),
	SOC_SINGLE_EXT("Volume", 0, 0, WL1273_MAX_VOLUME, 0,
		       snd_wl1273_fm_volume_get, snd_wl1273_fm_volume_put),
};

static const struct snd_soc_dapm_widget wl1273_dapm_widgets[] = {
	SND_SOC_DAPM_INPUT("RX"),

	SND_SOC_DAPM_OUTPUT("TX"),
};

static const struct snd_soc_dapm_route wl1273_dapm_routes[] = {
	{ "Capture", NULL, "RX" },

	{ "TX", NULL, "Playback" },
};

static int wl1273_startup(struct snd_pcm_substream *substream,
			  struct snd_soc_dai *dai)
{
	struct snd_soc_codec *codec = dai->codec;
	struct wl1273_priv *wl1273 = snd_soc_codec_get_drvdata(codec);

	switch (wl1273->mode) {
	case WL1273_MODE_BT:
		snd_pcm_hw_constraint_single(substream->runtime,
					     SNDRV_PCM_HW_PARAM_RATE, 8000);
		snd_pcm_hw_constraint_single(substream->runtime,
					     SNDRV_PCM_HW_PARAM_CHANNELS, 1);
		break;
	case WL1273_MODE_FM_RX:
		if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
			pr_err("Cannot play in RX mode.\n");
			return -EINVAL;
		}
		break;
	case WL1273_MODE_FM_TX:
		if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) {
			pr_err("Cannot capture in TX mode.\n");
			return -EINVAL;
		}
		break;
	default:
		return -EINVAL;
		break;
	}

	return 0;
}

static int wl1273_hw_params(struct snd_pcm_substream *substream,
			    struct snd_pcm_hw_params *params,
			    struct snd_soc_dai *dai)
{
	struct wl1273_priv *wl1273 = snd_soc_codec_get_drvdata(dai->codec);
	struct wl1273_core *core = wl1273->core;
	unsigned int rate, width, r;

	if (params_width(params) != 16) {
		dev_err(dai->dev, "%d bits/sample not supported\n",
			params_width(params));
		return -EINVAL;
	}

	rate = params_rate(params);
	width =  hw_param_interval(params, SNDRV_PCM_HW_PARAM_SAMPLE_BITS)->min;

	if (wl1273->mode == WL1273_MODE_BT) {
		if (rate != 8000) {
			pr_err("Rate %d not supported.\n", params_rate(params));
			return -EINVAL;
		}

		if (params_channels(params) != 1) {
			pr_err("Only mono supported.\n");
			return -EINVAL;
		}

		return 0;
	}

	if (wl1273->mode == WL1273_MODE_FM_TX &&
	    substream->stream == SNDRV_PCM_STREAM_CAPTURE) {
		pr_err("Only playback supported with TX.\n");
		return -EINVAL;
	}

	if (wl1273->mode == WL1273_MODE_FM_RX  &&
	    substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
		pr_err("Only capture supported with RX.\n");
		return -EINVAL;
	}

	if (wl1273->mode != WL1273_MODE_FM_RX  &&
	    wl1273->mode != WL1273_MODE_FM_TX) {
		pr_err("Unexpected mode: %d.\n", wl1273->mode);
		return -EINVAL;
	}

	r = snd_wl1273_fm_set_i2s_mode(core, rate, width);
	if (r)
		return r;

	wl1273->channels = params_channels(params);
	r = snd_wl1273_fm_set_channel_number(core, wl1273->channels);
	if (r)
		return r;

	return 0;
}

static const struct snd_soc_dai_ops wl1273_dai_ops = {
	.startup	= wl1273_startup,
	.hw_params	= wl1273_hw_params,
};

static struct snd_soc_dai_driver wl1273_dai = {
	.name = "wl1273-fm",
	.playback = {
		.stream_name = "Playback",
		.channels_min = 1,
		.channels_max = 2,
		.rates = SNDRV_PCM_RATE_8000_48000,
		.formats = SNDRV_PCM_FMTBIT_S16_LE},
	.capture = {
		.stream_name = "Capture",
		.channels_min = 1,
		.channels_max = 2,
		.rates = SNDRV_PCM_RATE_8000_48000,
		.formats = SNDRV_PCM_FMTBIT_S16_LE},
	.ops = &wl1273_dai_ops,
};

/* Audio interface format for the soc_card driver */
int wl1273_get_format(struct snd_soc_codec *codec, unsigned int *fmt)
{
	struct wl1273_priv *wl1273;

	if (codec == NULL || fmt == NULL)
		return -EINVAL;

	wl1273 = snd_soc_codec_get_drvdata(codec);

	switch (wl1273->mode) {
	case WL1273_MODE_FM_RX:
	case WL1273_MODE_FM_TX:
		*fmt =	SND_SOC_DAIFMT_I2S |
			SND_SOC_DAIFMT_NB_NF |
			SND_SOC_DAIFMT_CBM_CFM;

		break;
	case WL1273_MODE_BT:
		*fmt =	SND_SOC_DAIFMT_DSP_A |
			SND_SOC_DAIFMT_IB_NF |
			SND_SOC_DAIFMT_CBM_CFM;

		break;
	default:
		return -EINVAL;
	}

	return 0;
}
EXPORT_SYMBOL_GPL(wl1273_get_format);

static int wl1273_probe(struct snd_soc_codec *codec)
{
	struct wl1273_core **core = codec->dev->platform_data;
	struct wl1273_priv *wl1273;

	dev_dbg(codec->dev, "%s.\n", __func__);

	if (!core) {
		dev_err(codec->dev, "Platform data is missing.\n");
		return -EINVAL;
	}

	wl1273 = kzalloc(sizeof(struct wl1273_priv), GFP_KERNEL);
	if (!wl1273)
		return -ENOMEM;

	wl1273->mode = WL1273_MODE_BT;
	wl1273->core = *core;

	snd_soc_codec_set_drvdata(codec, wl1273);

	return 0;
}

static int wl1273_remove(struct snd_soc_codec *codec)
{
	struct wl1273_priv *wl1273 = snd_soc_codec_get_drvdata(codec);

	dev_dbg(codec->dev, "%s\n", __func__);
	kfree(wl1273);

	return 0;
}

static struct snd_soc_codec_driver soc_codec_dev_wl1273 = {
	.probe = wl1273_probe,
	.remove = wl1273_remove,

	.component_driver = {
		.controls		= wl1273_controls,
		.num_controls		= ARRAY_SIZE(wl1273_controls),
		.dapm_widgets		= wl1273_dapm_widgets,
		.num_dapm_widgets	= ARRAY_SIZE(wl1273_dapm_widgets),
		.dapm_routes		= wl1273_dapm_routes,
		.num_dapm_routes	= ARRAY_SIZE(wl1273_dapm_routes),
	},
};

static int wl1273_platform_probe(struct platform_device *pdev)
{
	return snd_soc_register_codec(&pdev->dev, &soc_codec_dev_wl1273,
				      &wl1273_dai, 1);
}

static int wl1273_platform_remove(struct platform_device *pdev)
{
	snd_soc_unregister_codec(&pdev->dev);
	return 0;
}

MODULE_ALIAS("platform:wl1273-codec");

static struct platform_driver wl1273_platform_driver = {
	.driver		= {
		.name	= "wl1273-codec",
	},
	.probe		= wl1273_platform_probe,
	.remove		= wl1273_platform_remove,
};

module_platform_driver(wl1273_platform_driver);

MODULE_AUTHOR("Matti Aaltonen <matti.j.aaltonen@nokia.com>");
MODULE_DESCRIPTION("ASoC WL1273 codec driver");
MODULE_LICENSE("GPL");
Commit	Line	Data
3fabe089 MA	1	/*
	2	* ALSA SoC WL1273 codec driver
	3	*
	4	* Author: Matti Aaltonen, <matti.j.aaltonen@nokia.com>
	5	*
40285f83	6	* Copyright: (C) 2010, 2011 Nokia Corporation
3fabe089 MA	7	*
	8	* This program is free software; you can redistribute it and/or
	9	* modify it under the terms of the GNU General Public License
	10	* version 2 as published by the Free Software Foundation.
	11	*
	12	* This program is distributed in the hope that it will be useful, but
	13	* WITHOUT ANY WARRANTY; without even the implied warranty of
	14	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	15	* General Public License for more details.
	16	*
	17	* You should have received a copy of the GNU General Public License
	18	* along with this program; if not, write to the Free Software
	19	* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
	20	* 02110-1301 USA
	21	*
	22	*/
	23
	24	#include <linux/mfd/wl1273-core.h>
	25	#include <linux/slab.h>
da155d5b	26	#include <linux/module.h>
3fabe089 MA	27	#include <sound/pcm.h>
3fabe089 MA	28	#include <sound/pcm_params.h>
0d911bae	29	#include <sound/soc.h>
3fabe089 MA	30	#include <sound/initval.h>
	31
	32	#include "wl1273.h"
	33
	34	enum wl1273_mode { WL1273_MODE_BT, WL1273_MODE_FM_RX, WL1273_MODE_FM_TX };
	35
	36	/* codec private data */
	37	struct wl1273_priv {
	38	enum wl1273_mode mode;
	39	struct wl1273_core *core;
	40	unsigned int channels;
	41	};
	42
	43	static int snd_wl1273_fm_set_i2s_mode(struct wl1273_core *core,
	44	int rate, int width)
	45	{
228dd545	46	struct device *dev = &core->client->dev;
3fabe089 MA	47	int r = 0;
	48	u16 mode;
	49
	50	dev_dbg(dev, "rate: %d\n", rate);
	51	dev_dbg(dev, "width: %d\n", width);
	52
	53	mutex_lock(&core->lock);
	54
	55	mode = core->i2s_mode & ~WL1273_IS2_WIDTH & ~WL1273_IS2_RATE;
	56
	57	switch (rate) {
	58	case 48000:
	59	mode \|= WL1273_IS2_RATE_48K;
	60	break;
	61	case 44100:
	62	mode \|= WL1273_IS2_RATE_44_1K;
	63	break;
	64	case 32000:
	65	mode \|= WL1273_IS2_RATE_32K;
	66	break;
	67	case 22050:
	68	mode \|= WL1273_IS2_RATE_22_05K;
	69	break;
	70	case 16000:
	71	mode \|= WL1273_IS2_RATE_16K;
	72	break;
	73	case 12000:
	74	mode \|= WL1273_IS2_RATE_12K;
	75	break;
	76	case 11025:
	77	mode \|= WL1273_IS2_RATE_11_025;
	78	break;
	79	case 8000:
	80	mode \|= WL1273_IS2_RATE_8K;
	81	break;
	82	default:
	83	dev_err(dev, "Sampling rate: %d not supported\n", rate);
	84	r = -EINVAL;
	85	goto out;
	86	}
	87
	88	switch (width) {
	89	case 16:
	90	mode \|= WL1273_IS2_WIDTH_32;
	91	break;
	92	case 20:
	93	mode \|= WL1273_IS2_WIDTH_40;
	94	break;
	95	case 24:
	96	mode \|= WL1273_IS2_WIDTH_48;
	97	break;
	98	case 25:
	99	mode \|= WL1273_IS2_WIDTH_50;
	100	break;
	101	case 30:
	102	mode \|= WL1273_IS2_WIDTH_60;
	103	break;
	104	case 32:
	105	mode \|= WL1273_IS2_WIDTH_64;
	106	break;
	107	case 40:
	108	mode \|= WL1273_IS2_WIDTH_80;
	109	break;
	110	case 48:
111	mode \|= WL1273_IS2_WIDTH_96;
112	break;
113	case 64:
114	mode \|= WL1273_IS2_WIDTH_128;
115	break;
116	default:
117	dev_err(dev, "Data width: %d not supported\n", width);
118	r = -EINVAL;
119	goto out;
120	}
121
122	dev_dbg(dev, "WL1273_I2S_DEF_MODE: 0x%04x\n", WL1273_I2S_DEF_MODE);
123	dev_dbg(dev, "core->i2s_mode: 0x%04x\n", core->i2s_mode);
124	dev_dbg(dev, "mode: 0x%04x\n", mode);
125
126	if (core->i2s_mode != mode) {
228dd545	127	r = core->write(core, WL1273_I2S_MODE_CONFIG_SET, mode);
3fabe089 MA	128	if (r)
	129	goto out;
	130
	131	core->i2s_mode = mode;
228dd545 MA	132	r = core->write(core, WL1273_AUDIO_ENABLE,
228dd545 MA	133	WL1273_AUDIO_ENABLE_I2S);
3fabe089 MA	134	if (r)
	135	goto out;
	136	}
	137	out:
	138	mutex_unlock(&core->lock);
	139
	140	return r;
	141	}
	142
	143	static int snd_wl1273_fm_set_channel_number(struct wl1273_core *core,
	144	int channel_number)
	145	{
228dd545	146	struct device *dev = &core->client->dev;
3fabe089 MA	147	int r = 0;
	148
	149	dev_dbg(dev, "%s\n", __func__);
	150
	151	mutex_lock(&core->lock);
	152
	153	if (core->channel_number == channel_number)
	154	goto out;
	155
	156	if (channel_number == 1 && core->mode == WL1273_MODE_RX)
228dd545	157	r = core->write(core, WL1273_MOST_MODE_SET, WL1273_RX_MONO);
3fabe089	158	else if (channel_number == 1 && core->mode == WL1273_MODE_TX)
228dd545	159	r = core->write(core, WL1273_MONO_SET, WL1273_TX_MONO);
3fabe089	160	else if (channel_number == 2 && core->mode == WL1273_MODE_RX)
228dd545	161	r = core->write(core, WL1273_MOST_MODE_SET, WL1273_RX_STEREO);
3fabe089	162	else if (channel_number == 2 && core->mode == WL1273_MODE_TX)
228dd545	163	r = core->write(core, WL1273_MONO_SET, WL1273_TX_STEREO);
3fabe089 MA	164	else
	165	r = -EINVAL;
	166	out:
	167	mutex_unlock(&core->lock);
	168
	169	return r;
	170	}
	171
	172	static int snd_wl1273_get_audio_route(struct snd_kcontrol *kcontrol,
	173	struct snd_ctl_elem_value *ucontrol)
	174	{
ea53bf77	175	struct snd_soc_codec *codec = snd_soc_kcontrol_codec(kcontrol);
3fabe089 MA	176	struct wl1273_priv *wl1273 = snd_soc_codec_get_drvdata(codec);
3fabe089 MA	177
154a0fdd	178	ucontrol->value.enumerated.item[0] = wl1273->mode;
3fabe089 MA	179
	180	return 0;
	181	}
	182
40285f83 MA	183	/*
	184	* TODO: Implement the audio routing in the driver. Now this control
	185	* only indicates the setting that has been done elsewhere (in the user
	186	* space).
	187	*/
	188	static const char * const wl1273_audio_route[] = { "Bt", "FmRx", "FmTx" };
3fabe089 MA	189
	190	static int snd_wl1273_set_audio_route(struct snd_kcontrol *kcontrol,
	191	struct snd_ctl_elem_value *ucontrol)
	192	{
ea53bf77	193	struct snd_soc_codec *codec = snd_soc_kcontrol_codec(kcontrol);
3fabe089 MA	194	struct wl1273_priv *wl1273 = snd_soc_codec_get_drvdata(codec);
3fabe089 MA	195
154a0fdd	196	if (wl1273->mode == ucontrol->value.enumerated.item[0])
2c4ee9b5 MA	197	return 0;
2c4ee9b5 MA	198
3fabe089	199	/* Do not allow changes while stream is running */
5c898e74	200	if (snd_soc_codec_is_active(codec))
3fabe089 MA	201	return -EPERM;
3fabe089 MA	202
154a0fdd	203	if (ucontrol->value.enumerated.item[0] >= ARRAY_SIZE(wl1273_audio_route))
3fabe089 MA	204	return -EINVAL;
3fabe089 MA	205
154a0fdd	206	wl1273->mode = ucontrol->value.enumerated.item[0];
3fabe089 MA	207
	208	return 1;
	209	}
	210
4ec20a97	211	static SOC_ENUM_SINGLE_EXT_DECL(wl1273_enum, wl1273_audio_route);
3fabe089 MA	212
	213	static int snd_wl1273_fm_audio_get(struct snd_kcontrol *kcontrol,
	214	struct snd_ctl_elem_value *ucontrol)
	215	{
ea53bf77	216	struct snd_soc_codec *codec = snd_soc_kcontrol_codec(kcontrol);
3fabe089 MA	217	struct wl1273_priv *wl1273 = snd_soc_codec_get_drvdata(codec);
	218
	219	dev_dbg(codec->dev, "%s: enter.\n", __func__);
	220
154a0fdd	221	ucontrol->value.enumerated.item[0] = wl1273->core->audio_mode;
3fabe089 MA	222
	223	return 0;
	224	}
	225
	226	static int snd_wl1273_fm_audio_put(struct snd_kcontrol *kcontrol,
	227	struct snd_ctl_elem_value *ucontrol)
	228	{
ea53bf77	229	struct snd_soc_codec *codec = snd_soc_kcontrol_codec(kcontrol);
3fabe089 MA	230	struct wl1273_priv *wl1273 = snd_soc_codec_get_drvdata(codec);
	231	int val, r = 0;
	232
	233	dev_dbg(codec->dev, "%s: enter.\n", __func__);
	234
154a0fdd	235	val = ucontrol->value.enumerated.item[0];
3fabe089 MA	236	if (wl1273->core->audio_mode == val)
	237	return 0;
	238
228dd545	239	r = wl1273->core->set_audio(wl1273->core, val);
3fabe089 MA	240	if (r < 0)
	241	return r;
	242
	243	return 1;
	244	}
	245
40285f83	246	static const char * const wl1273_audio_strings[] = { "Digital", "Analog" };
3fabe089	247
4ec20a97	248	static SOC_ENUM_SINGLE_EXT_DECL(wl1273_audio_enum, wl1273_audio_strings);
3fabe089 MA	249
	250	static int snd_wl1273_fm_volume_get(struct snd_kcontrol *kcontrol,
	251	struct snd_ctl_elem_value *ucontrol)
	252	{
ea53bf77	253	struct snd_soc_codec *codec = snd_soc_kcontrol_codec(kcontrol);
3fabe089 MA	254	struct wl1273_priv *wl1273 = snd_soc_codec_get_drvdata(codec);
	255
	256	dev_dbg(codec->dev, "%s: enter.\n", __func__);
	257
	258	ucontrol->value.integer.value[0] = wl1273->core->volume;
	259
	260	return 0;
	261	}
	262
	263	static int snd_wl1273_fm_volume_put(struct snd_kcontrol *kcontrol,
	264	struct snd_ctl_elem_value *ucontrol)
	265	{
ea53bf77	266	struct snd_soc_codec *codec = snd_soc_kcontrol_codec(kcontrol);
3fabe089 MA	267	struct wl1273_priv *wl1273 = snd_soc_codec_get_drvdata(codec);
	268	int r;
	269
	270	dev_dbg(codec->dev, "%s: enter.\n", __func__);
	271
228dd545 MA	272	r = wl1273->core->set_volume(wl1273->core,
228dd545 MA	273	ucontrol->value.integer.value[0]);
3fabe089 MA	274	if (r)
	275	return r;
	276
	277	return 1;
	278	}
	279
	280	static const struct snd_kcontrol_new wl1273_controls[] = {
	281	SOC_ENUM_EXT("Codec Mode", wl1273_enum,
	282	snd_wl1273_get_audio_route, snd_wl1273_set_audio_route),
	283	SOC_ENUM_EXT("Audio Switch", wl1273_audio_enum,
	284	snd_wl1273_fm_audio_get, snd_wl1273_fm_audio_put),
	285	SOC_SINGLE_EXT("Volume", 0, 0, WL1273_MAX_VOLUME, 0,
	286	snd_wl1273_fm_volume_get, snd_wl1273_fm_volume_put),
	287	};
	288
e29deb48 MB	289	static const struct snd_soc_dapm_widget wl1273_dapm_widgets[] = {
	290	SND_SOC_DAPM_INPUT("RX"),
	291
	292	SND_SOC_DAPM_OUTPUT("TX"),
	293	};
	294
	295	static const struct snd_soc_dapm_route wl1273_dapm_routes[] = {
	296	{ "Capture", NULL, "RX" },
	297
	298	{ "TX", NULL, "Playback" },
	299	};
	300
3fabe089 MA	301	static int wl1273_startup(struct snd_pcm_substream *substream,
	302	struct snd_soc_dai *dai)
	303	{
e6968a17	304	struct snd_soc_codec *codec = dai->codec;
3fabe089 MA	305	struct wl1273_priv *wl1273 = snd_soc_codec_get_drvdata(codec);
	306
	307	switch (wl1273->mode) {
	308	case WL1273_MODE_BT:
95c68b86 LPC	309	snd_pcm_hw_constraint_single(substream->runtime,
	310	SNDRV_PCM_HW_PARAM_RATE, 8000);
	311	snd_pcm_hw_constraint_single(substream->runtime,
	312	SNDRV_PCM_HW_PARAM_CHANNELS, 1);
3fabe089 MA	313	break;
	314	case WL1273_MODE_FM_RX:
	315	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
	316	pr_err("Cannot play in RX mode.\n");
	317	return -EINVAL;
	318	}
	319	break;
	320	case WL1273_MODE_FM_TX:
	321	if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) {
	322	pr_err("Cannot capture in TX mode.\n");
	323	return -EINVAL;
	324	}
	325	break;
	326	default:
	327	return -EINVAL;
	328	break;
	329	}
	330
	331	return 0;
	332	}
	333
	334	static int wl1273_hw_params(struct snd_pcm_substream *substream,
	335	struct snd_pcm_hw_params *params,
	336	struct snd_soc_dai *dai)
	337	{
e6968a17	338	struct wl1273_priv *wl1273 = snd_soc_codec_get_drvdata(dai->codec);
3fabe089 MA	339	struct wl1273_core *core = wl1273->core;
	340	unsigned int rate, width, r;
	341
9630181a MB	342	if (params_width(params) != 16) {
	343	dev_err(dai->dev, "%d bits/sample not supported\n",
	344	params_width(params));
3fabe089 MA	345	return -EINVAL;
	346	}
	347
	348	rate = params_rate(params);
	349	width = hw_param_interval(params, SNDRV_PCM_HW_PARAM_SAMPLE_BITS)->min;
	350
	351	if (wl1273->mode == WL1273_MODE_BT) {
	352	if (rate != 8000) {
	353	pr_err("Rate %d not supported.\n", params_rate(params));
	354	return -EINVAL;
	355	}
	356
	357	if (params_channels(params) != 1) {
	358	pr_err("Only mono supported.\n");
	359	return -EINVAL;
	360	}
	361
	362	return 0;
	363	}
	364
	365	if (wl1273->mode == WL1273_MODE_FM_TX &&
	366	substream->stream == SNDRV_PCM_STREAM_CAPTURE) {
	367	pr_err("Only playback supported with TX.\n");
	368	return -EINVAL;
	369	}
	370
	371	if (wl1273->mode == WL1273_MODE_FM_RX &&
	372	substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
	373	pr_err("Only capture supported with RX.\n");
	374	return -EINVAL;
	375	}
	376
	377	if (wl1273->mode != WL1273_MODE_FM_RX &&
	378	wl1273->mode != WL1273_MODE_FM_TX) {
	379	pr_err("Unexpected mode: %d.\n", wl1273->mode);
	380	return -EINVAL;
	381	}
	382
	383	r = snd_wl1273_fm_set_i2s_mode(core, rate, width);
	384	if (r)
	385	return r;
	386
	387	wl1273->channels = params_channels(params);
	388	r = snd_wl1273_fm_set_channel_number(core, wl1273->channels);
	389	if (r)
	390	return r;
	391
	392	return 0;
	393	}
	394
85e7652d	395	static const struct snd_soc_dai_ops wl1273_dai_ops = {
3fabe089 MA	396	.startup = wl1273_startup,
	397	.hw_params = wl1273_hw_params,
	398	};
	399
	400	static struct snd_soc_dai_driver wl1273_dai = {
	401	.name = "wl1273-fm",
	402	.playback = {
	403	.stream_name = "Playback",
	404	.channels_min = 1,
	405	.channels_max = 2,
	406	.rates = SNDRV_PCM_RATE_8000_48000,
	407	.formats = SNDRV_PCM_FMTBIT_S16_LE},
	408	.capture = {
	409	.stream_name = "Capture",
	410	.channels_min = 1,
	411	.channels_max = 2,
	412	.rates = SNDRV_PCM_RATE_8000_48000,
	413	.formats = SNDRV_PCM_FMTBIT_S16_LE},
	414	.ops = &wl1273_dai_ops,
	415	};
	416
	417	/* Audio interface format for the soc_card driver */
	418	int wl1273_get_format(struct snd_soc_codec codec, unsigned int fmt)
	419	{
	420	struct wl1273_priv *wl1273;
	421
	422	if (codec == NULL \|\| fmt == NULL)
	423	return -EINVAL;
	424
	425	wl1273 = snd_soc_codec_get_drvdata(codec);
	426
	427	switch (wl1273->mode) {
	428	case WL1273_MODE_FM_RX:
	429	case WL1273_MODE_FM_TX:
	430	*fmt = SND_SOC_DAIFMT_I2S \|
	431	SND_SOC_DAIFMT_NB_NF \|
	432	SND_SOC_DAIFMT_CBM_CFM;
	433
	434	break;
	435	case WL1273_MODE_BT:
	436	*fmt = SND_SOC_DAIFMT_DSP_A \|
	437	SND_SOC_DAIFMT_IB_NF \|
	438	SND_SOC_DAIFMT_CBM_CFM;
	439
	440	break;
	441	default:
	442	return -EINVAL;
	443	}
	444
	445	return 0;
	446	}
	447	EXPORT_SYMBOL_GPL(wl1273_get_format);
	448
	449	static int wl1273_probe(struct snd_soc_codec *codec)
	450	{
9e554696	451	struct wl1273_core **core = codec->dev->platform_data;
3fabe089	452	struct wl1273_priv *wl1273;
3fabe089 MA	453
	454	dev_dbg(codec->dev, "%s.\n", __func__);
	455
	456	if (!core) {
	457	dev_err(codec->dev, "Platform data is missing.\n");
	458	return -EINVAL;
	459	}
	460
	461	wl1273 = kzalloc(sizeof(struct wl1273_priv), GFP_KERNEL);
ac872d3d	462	if (!wl1273)
3fabe089	463	return -ENOMEM;
3fabe089 MA	464
	465	wl1273->mode = WL1273_MODE_BT;
	466	wl1273->core = *core;
	467
	468	snd_soc_codec_set_drvdata(codec, wl1273);
3fabe089	469
c8b5d089	470	return 0;
3fabe089 MA	471	}
	472
	473	static int wl1273_remove(struct snd_soc_codec *codec)
	474	{
	475	struct wl1273_priv *wl1273 = snd_soc_codec_get_drvdata(codec);
	476
	477	dev_dbg(codec->dev, "%s\n", __func__);
	478	kfree(wl1273);
	479
	480	return 0;
	481	}
	482
	483	static struct snd_soc_codec_driver soc_codec_dev_wl1273 = {
	484	.probe = wl1273_probe,
	485	.remove = wl1273_remove,
e29deb48	486
23ce0ad9 KM	487	.component_driver = {
	488	.controls = wl1273_controls,
	489	.num_controls = ARRAY_SIZE(wl1273_controls),
	490	.dapm_widgets = wl1273_dapm_widgets,
	491	.num_dapm_widgets = ARRAY_SIZE(wl1273_dapm_widgets),
	492	.dapm_routes = wl1273_dapm_routes,
	493	.num_dapm_routes = ARRAY_SIZE(wl1273_dapm_routes),
	494	},
3fabe089 MA	495	};
3fabe089 MA	496
7a79e94e	497	static int wl1273_platform_probe(struct platform_device *pdev)
3fabe089 MA	498	{
	499	return snd_soc_register_codec(&pdev->dev, &soc_codec_dev_wl1273,
	500	&wl1273_dai, 1);
	501	}
	502
7a79e94e	503	static int wl1273_platform_remove(struct platform_device *pdev)
3fabe089 MA	504	{
	505	snd_soc_unregister_codec(&pdev->dev);
	506	return 0;
	507	}
	508
	509	MODULE_ALIAS("platform:wl1273-codec");
	510
	511	static struct platform_driver wl1273_platform_driver = {
	512	.driver = {
	513	.name = "wl1273-codec",
3fabe089 MA	514	},
3fabe089 MA	515	.probe = wl1273_platform_probe,
7a79e94e	516	.remove = wl1273_platform_remove,
3fabe089 MA	517	};
3fabe089 MA	518
5bbcc3c0	519	module_platform_driver(wl1273_platform_driver);
3fabe089 MA	520
	521	MODULE_AUTHOR("Matti Aaltonen <matti.j.aaltonen@nokia.com>");
	522	MODULE_DESCRIPTION("ASoC WL1273 codec driver");
	523	MODULE_LICENSE("GPL");