[mirror_ubuntu-artful-kernel.git] / sound / soc / omap / omap-hdmi-audio.c

/*
 * omap-hdmi-audio.c -- OMAP4+ DSS HDMI audio support library
 *
 * Copyright (C) 2014 Texas Instruments Incorporated - http://www.ti.com
 *
 * Author: Jyri Sarha <jsarha@ti.com>
 *
 * 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.
 *
 */

#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/err.h>
#include <linux/string.h>
#include <linux/platform_device.h>
#include <sound/soc.h>
#include <sound/pcm_params.h>
#include <sound/dmaengine_pcm.h>
#include <uapi/sound/asound.h>
#include <sound/asoundef.h>
#include <sound/omap-pcm.h>
#include <sound/omap-hdmi-audio.h>

#define DRV_NAME "omap-hdmi-audio"

struct hdmi_audio_data {
	struct snd_soc_card *card;

	const struct omap_hdmi_audio_ops *ops;
	struct device *dssdev;
	struct snd_dmaengine_dai_dma_data dma_data;
	struct omap_dss_audio dss_audio;
	struct snd_aes_iec958 iec;
	struct snd_cea_861_aud_if cea;

	struct mutex current_stream_lock;
	struct snd_pcm_substream *current_stream;
};

static
struct hdmi_audio_data *card_drvdata_substream(struct snd_pcm_substream *ss)
{
	struct snd_soc_pcm_runtime *rtd = ss->private_data;

	return snd_soc_card_get_drvdata(rtd->card);
}

static void hdmi_dai_abort(struct device *dev)
{
	struct hdmi_audio_data *ad = dev_get_drvdata(dev);

	mutex_lock(&ad->current_stream_lock);
	if (ad->current_stream && ad->current_stream->runtime &&
	    snd_pcm_running(ad->current_stream)) {
		dev_err(dev, "HDMI display disabled, aborting playback\n");
		snd_pcm_stream_lock_irq(ad->current_stream);
		snd_pcm_stop(ad->current_stream, SNDRV_PCM_STATE_DISCONNECTED);
		snd_pcm_stream_unlock_irq(ad->current_stream);
	}
	mutex_unlock(&ad->current_stream_lock);
}

static int hdmi_dai_startup(struct snd_pcm_substream *substream,
			    struct snd_soc_dai *dai)
{
	struct hdmi_audio_data *ad = card_drvdata_substream(substream);
	int ret;
	/*
	 * Make sure that the period bytes are multiple of the DMA packet size.
	 * Largest packet size we use is 32 32-bit words = 128 bytes
	 */
	ret = snd_pcm_hw_constraint_step(substream->runtime, 0,
					 SNDRV_PCM_HW_PARAM_PERIOD_BYTES, 128);
	if (ret < 0) {
		dev_err(dai->dev, "Could not apply period constraint: %d\n",
			ret);
		return ret;
	}
	ret = snd_pcm_hw_constraint_step(substream->runtime, 0,
					 SNDRV_PCM_HW_PARAM_BUFFER_BYTES, 128);
	if (ret < 0) {
		dev_err(dai->dev, "Could not apply buffer constraint: %d\n",
			ret);
		return ret;
	}

	snd_soc_dai_set_dma_data(dai, substream, &ad->dma_data);

	mutex_lock(&ad->current_stream_lock);
	ad->current_stream = substream;
	mutex_unlock(&ad->current_stream_lock);

	ret = ad->ops->audio_startup(ad->dssdev, hdmi_dai_abort);

	if (ret) {
		mutex_lock(&ad->current_stream_lock);
		ad->current_stream = NULL;
		mutex_unlock(&ad->current_stream_lock);
	}

	return ret;
}

static int hdmi_dai_hw_params(struct snd_pcm_substream *substream,
			      struct snd_pcm_hw_params *params,
			      struct snd_soc_dai *dai)
{
	struct hdmi_audio_data *ad = card_drvdata_substream(substream);
	struct snd_aes_iec958 *iec = &ad->iec;
	struct snd_cea_861_aud_if *cea = &ad->cea;

	WARN_ON(ad->current_stream != substream);

	switch (params_format(params)) {
	case SNDRV_PCM_FORMAT_S16_LE:
		ad->dma_data.maxburst = 16;
		break;
	case SNDRV_PCM_FORMAT_S24_LE:
		ad->dma_data.maxburst = 32;
		break;
	default:
		dev_err(dai->dev, "format not supported!\n");
		return -EINVAL;
	}

	ad->dss_audio.iec = iec;
	ad->dss_audio.cea = cea;
	/*
	 * fill the IEC-60958 channel status word
	 */
	/* initialize the word bytes */
	memset(iec->status, 0, sizeof(iec->status));

	/* specify IEC-60958-3 (commercial use) */
	iec->status[0] &= ~IEC958_AES0_PROFESSIONAL;

	/* specify that the audio is LPCM*/
	iec->status[0] &= ~IEC958_AES0_NONAUDIO;

	iec->status[0] |= IEC958_AES0_CON_NOT_COPYRIGHT;

	iec->status[0] |= IEC958_AES0_CON_EMPHASIS_NONE;

	iec->status[1] = IEC958_AES1_CON_GENERAL;

	iec->status[2] |= IEC958_AES2_CON_SOURCE_UNSPEC;

	iec->status[2] |= IEC958_AES2_CON_CHANNEL_UNSPEC;

	switch (params_rate(params)) {
	case 32000:
		iec->status[3] |= IEC958_AES3_CON_FS_32000;
		break;
	case 44100:
		iec->status[3] |= IEC958_AES3_CON_FS_44100;
		break;
	case 48000:
		iec->status[3] |= IEC958_AES3_CON_FS_48000;
		break;
	case 88200:
		iec->status[3] |= IEC958_AES3_CON_FS_88200;
		break;
	case 96000:
		iec->status[3] |= IEC958_AES3_CON_FS_96000;
		break;
	case 176400:
		iec->status[3] |= IEC958_AES3_CON_FS_176400;
		break;
	case 192000:
		iec->status[3] |= IEC958_AES3_CON_FS_192000;
		break;
	default:
		dev_err(dai->dev, "rate not supported!\n");
		return -EINVAL;
	}

	/* specify the clock accuracy */
	iec->status[3] |= IEC958_AES3_CON_CLOCK_1000PPM;

	/*
	 * specify the word length. The same word length value can mean
	 * two different lengths. Hence, we need to specify the maximum
	 * word length as well.
	 */
	switch (params_format(params)) {
	case SNDRV_PCM_FORMAT_S16_LE:
		iec->status[4] |= IEC958_AES4_CON_WORDLEN_20_16;
		iec->status[4] &= ~IEC958_AES4_CON_MAX_WORDLEN_24;
		break;
	case SNDRV_PCM_FORMAT_S24_LE:
		iec->status[4] |= IEC958_AES4_CON_WORDLEN_24_20;
		iec->status[4] |= IEC958_AES4_CON_MAX_WORDLEN_24;
		break;
	default:
		dev_err(dai->dev, "format not supported!\n");
		return -EINVAL;
	}

	/*
	 * Fill the CEA-861 audio infoframe (see spec for details)
	 */

	cea->db1_ct_cc = (params_channels(params) - 1)
		& CEA861_AUDIO_INFOFRAME_DB1CC;
	cea->db1_ct_cc |= CEA861_AUDIO_INFOFRAME_DB1CT_FROM_STREAM;

	cea->db2_sf_ss = CEA861_AUDIO_INFOFRAME_DB2SF_FROM_STREAM;
	cea->db2_sf_ss |= CEA861_AUDIO_INFOFRAME_DB2SS_FROM_STREAM;

	cea->db3 = 0; /* not used, all zeros */

	if (params_channels(params) == 2)
		cea->db4_ca = 0x0;
	else if (params_channels(params) == 6)
		cea->db4_ca = 0xb;
	else
		cea->db4_ca = 0x13;

	if (cea->db4_ca == 0x00)
		cea->db5_dminh_lsv = CEA861_AUDIO_INFOFRAME_DB5_DM_INH_PERMITTED;
	else
		cea->db5_dminh_lsv = CEA861_AUDIO_INFOFRAME_DB5_DM_INH_PROHIBITED;

	/* the expression is trivial but makes clear what we are doing */
	cea->db5_dminh_lsv |= (0 & CEA861_AUDIO_INFOFRAME_DB5_LSV);

	return ad->ops->audio_config(ad->dssdev, &ad->dss_audio);
}

static int hdmi_dai_trigger(struct snd_pcm_substream *substream, int cmd,
			    struct snd_soc_dai *dai)
{
	struct hdmi_audio_data *ad = card_drvdata_substream(substream);
	int err = 0;

	WARN_ON(ad->current_stream != substream);

	switch (cmd) {
	case SNDRV_PCM_TRIGGER_START:
	case SNDRV_PCM_TRIGGER_RESUME:
	case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
		err = ad->ops->audio_start(ad->dssdev);
		break;
	case SNDRV_PCM_TRIGGER_STOP:
	case SNDRV_PCM_TRIGGER_SUSPEND:
	case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
		ad->ops->audio_stop(ad->dssdev);
		break;
	default:
		err = -EINVAL;
	}
	return err;
}

static void hdmi_dai_shutdown(struct snd_pcm_substream *substream,
			      struct snd_soc_dai *dai)
{
	struct hdmi_audio_data *ad = card_drvdata_substream(substream);

	WARN_ON(ad->current_stream != substream);

	ad->ops->audio_shutdown(ad->dssdev);

	mutex_lock(&ad->current_stream_lock);
	ad->current_stream = NULL;
	mutex_unlock(&ad->current_stream_lock);
}

static const struct snd_soc_dai_ops hdmi_dai_ops = {
	.startup	= hdmi_dai_startup,
	.hw_params	= hdmi_dai_hw_params,
	.trigger	= hdmi_dai_trigger,
	.shutdown	= hdmi_dai_shutdown,
};

static const struct snd_soc_component_driver omap_hdmi_component = {
	.name = "omapdss_hdmi",
};

static struct snd_soc_dai_driver omap5_hdmi_dai = {
	.name = "omap5-hdmi-dai",
	.playback = {
		.channels_min = 2,
		.channels_max = 8,
		.rates = (SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 |
			  SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_88200 |
			  SNDRV_PCM_RATE_96000 | SNDRV_PCM_RATE_176400 |
			  SNDRV_PCM_RATE_192000),
		.formats = SNDRV_PCM_FMTBIT_S16_LE,
	},
	.ops = &hdmi_dai_ops,
};

static struct snd_soc_dai_driver omap4_hdmi_dai = {
	.name = "omap4-hdmi-dai",
	.playback = {
		.channels_min = 2,
		.channels_max = 8,
		.rates = (SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 |
			  SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_88200 |
			  SNDRV_PCM_RATE_96000 | SNDRV_PCM_RATE_176400 |
			  SNDRV_PCM_RATE_192000),
		.formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S24_LE,
	},
	.ops = &hdmi_dai_ops,
};

static int omap_hdmi_audio_probe(struct platform_device *pdev)
{
	struct omap_hdmi_audio_pdata *ha = pdev->dev.platform_data;
	struct device *dev = &pdev->dev;
	struct hdmi_audio_data *ad;
	struct snd_soc_dai_driver *dai_drv;
	struct snd_soc_card *card;
	int ret;

	if (!ha) {
		dev_err(dev, "No platform data\n");
		return -EINVAL;
	}

	ad = devm_kzalloc(dev, sizeof(*ad), GFP_KERNEL);
	if (!ad)
		return -ENOMEM;
	ad->dssdev = ha->dev;
	ad->ops = ha->ops;
	ad->dma_data.addr = ha->audio_dma_addr;
	ad->dma_data.filter_data = "audio_tx";
	ad->dma_data.addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
	mutex_init(&ad->current_stream_lock);

	switch (ha->dss_version) {
	case OMAPDSS_VER_OMAP4430_ES1:
	case OMAPDSS_VER_OMAP4430_ES2:
	case OMAPDSS_VER_OMAP4:
		dai_drv = &omap4_hdmi_dai;
		break;
	case OMAPDSS_VER_OMAP5:
	case OMAPDSS_VER_DRA7xx:
		dai_drv = &omap5_hdmi_dai;
		break;
	default:
		return -EINVAL;
	}
	ret = snd_soc_register_component(ad->dssdev, &omap_hdmi_component,
					 dai_drv, 1);
	if (ret)
		return ret;

	ret = omap_pcm_platform_register(ad->dssdev);
	if (ret)
		return ret;

	card = devm_kzalloc(dev, sizeof(*card), GFP_KERNEL);
	if (!card)
		return -ENOMEM;

	card->name = devm_kasprintf(dev, GFP_KERNEL,
				    "HDMI %s", dev_name(ad->dssdev));
	card->owner = THIS_MODULE;
	card->dai_link =
		devm_kzalloc(dev, sizeof(*(card->dai_link)), GFP_KERNEL);
	if (!card->dai_link)
		return -ENOMEM;
	card->dai_link->name = card->name;
	card->dai_link->stream_name = card->name;
	card->dai_link->cpu_dai_name = dev_name(ad->dssdev);
	card->dai_link->platform_name = dev_name(ad->dssdev);
	card->dai_link->codec_name = "snd-soc-dummy";
	card->dai_link->codec_dai_name = "snd-soc-dummy-dai";
	card->num_links = 1;
	card->dev = dev;

	ret = snd_soc_register_card(card);
	if (ret) {
		dev_err(dev, "snd_soc_register_card failed (%d)\n", ret);
		snd_soc_unregister_component(ad->dssdev);
		return ret;
	}

	ad->card = card;
	snd_soc_card_set_drvdata(card, ad);

	dev_set_drvdata(dev, ad);

	return 0;
}

static int omap_hdmi_audio_remove(struct platform_device *pdev)
{
	struct hdmi_audio_data *ad = platform_get_drvdata(pdev);

	snd_soc_unregister_card(ad->card);
	snd_soc_unregister_component(ad->dssdev);
	return 0;
}

static struct platform_driver hdmi_audio_driver = {
	.driver = {
		.name = DRV_NAME,
	},
	.probe = omap_hdmi_audio_probe,
	.remove = omap_hdmi_audio_remove,
};

module_platform_driver(hdmi_audio_driver);

MODULE_AUTHOR("Jyri Sarha <jsarha@ti.com>");
MODULE_DESCRIPTION("OMAP HDMI Audio Driver");
MODULE_LICENSE("GPL");
MODULE_ALIAS("platform:" DRV_NAME);
Commit	Line	Data
50211be8 JS	1	/*
	2	* omap-hdmi-audio.c -- OMAP4+ DSS HDMI audio support library
	3	*
	4	* Copyright (C) 2014 Texas Instruments Incorporated - http://www.ti.com
	5	*
	6	* Author: Jyri Sarha <jsarha@ti.com>
	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	*/
	18
	19	#include <linux/kernel.h>
	20	#include <linux/module.h>
	21	#include <linux/err.h>
	22	#include <linux/string.h>
	23	#include <linux/platform_device.h>
	24	#include <sound/soc.h>
	25	#include <sound/pcm_params.h>
	26	#include <sound/dmaengine_pcm.h>
	27	#include <uapi/sound/asound.h>
	28	#include <sound/asoundef.h>
	29	#include <sound/omap-pcm.h>
	30	#include <sound/omap-hdmi-audio.h>
50211be8 JS	31
	32	#define DRV_NAME "omap-hdmi-audio"
	33
	34	struct hdmi_audio_data {
	35	struct snd_soc_card *card;
	36
	37	const struct omap_hdmi_audio_ops *ops;
	38	struct device *dssdev;
	39	struct snd_dmaengine_dai_dma_data dma_data;
	40	struct omap_dss_audio dss_audio;
	41	struct snd_aes_iec958 iec;
	42	struct snd_cea_861_aud_if cea;
	43
	44	struct mutex current_stream_lock;
	45	struct snd_pcm_substream *current_stream;
	46	};
	47
	48	static
	49	struct hdmi_audio_data card_drvdata_substream(struct snd_pcm_substream ss)
	50	{
	51	struct snd_soc_pcm_runtime *rtd = ss->private_data;
	52
	53	return snd_soc_card_get_drvdata(rtd->card);
	54	}
	55
	56	static void hdmi_dai_abort(struct device *dev)
	57	{
	58	struct hdmi_audio_data *ad = dev_get_drvdata(dev);
	59
	60	mutex_lock(&ad->current_stream_lock);
	61	if (ad->current_stream && ad->current_stream->runtime &&
	62	snd_pcm_running(ad->current_stream)) {
	63	dev_err(dev, "HDMI display disabled, aborting playback\n");
	64	snd_pcm_stream_lock_irq(ad->current_stream);
	65	snd_pcm_stop(ad->current_stream, SNDRV_PCM_STATE_DISCONNECTED);
	66	snd_pcm_stream_unlock_irq(ad->current_stream);
	67	}
	68	mutex_unlock(&ad->current_stream_lock);
	69	}
	70
	71	static int hdmi_dai_startup(struct snd_pcm_substream *substream,
	72	struct snd_soc_dai *dai)
	73	{
	74	struct hdmi_audio_data *ad = card_drvdata_substream(substream);
	75	int ret;
	76	/*
	77	* Make sure that the period bytes are multiple of the DMA packet size.
	78	* Largest packet size we use is 32 32-bit words = 128 bytes
	79	*/
	80	ret = snd_pcm_hw_constraint_step(substream->runtime, 0,
	81	SNDRV_PCM_HW_PARAM_PERIOD_BYTES, 128);
	82	if (ret < 0) {
7d40acc3 JS	83	dev_err(dai->dev, "Could not apply period constraint: %d\n",
	84	ret);
	85	return ret;
	86	}
	87	ret = snd_pcm_hw_constraint_step(substream->runtime, 0,
	88	SNDRV_PCM_HW_PARAM_BUFFER_BYTES, 128);
	89	if (ret < 0) {
	90	dev_err(dai->dev, "Could not apply buffer constraint: %d\n",
	91	ret);
50211be8 JS	92	return ret;
	93	}
	94
	95	snd_soc_dai_set_dma_data(dai, substream, &ad->dma_data);
	96
	97	mutex_lock(&ad->current_stream_lock);
	98	ad->current_stream = substream;
	99	mutex_unlock(&ad->current_stream_lock);
	100
	101	ret = ad->ops->audio_startup(ad->dssdev, hdmi_dai_abort);
	102
	103	if (ret) {
	104	mutex_lock(&ad->current_stream_lock);
	105	ad->current_stream = NULL;
	106	mutex_unlock(&ad->current_stream_lock);
	107	}
	108
	109	return ret;
	110	}
	111
	112	static int hdmi_dai_hw_params(struct snd_pcm_substream *substream,
	113	struct snd_pcm_hw_params *params,
	114	struct snd_soc_dai *dai)
	115	{
	116	struct hdmi_audio_data *ad = card_drvdata_substream(substream);
	117	struct snd_aes_iec958 *iec = &ad->iec;
	118	struct snd_cea_861_aud_if *cea = &ad->cea;
	119
	120	WARN_ON(ad->current_stream != substream);
	121
	122	switch (params_format(params)) {
	123	case SNDRV_PCM_FORMAT_S16_LE:
	124	ad->dma_data.maxburst = 16;
	125	break;
	126	case SNDRV_PCM_FORMAT_S24_LE:
	127	ad->dma_data.maxburst = 32;
	128	break;
	129	default:
	130	dev_err(dai->dev, "format not supported!\n");
	131	return -EINVAL;
	132	}
	133
	134	ad->dss_audio.iec = iec;
	135	ad->dss_audio.cea = cea;
	136	/*
	137	* fill the IEC-60958 channel status word
	138	*/
	139	/* initialize the word bytes */
	140	memset(iec->status, 0, sizeof(iec->status));
	141
	142	/* specify IEC-60958-3 (commercial use) */
	143	iec->status[0] &= ~IEC958_AES0_PROFESSIONAL;
	144
	145	/* specify that the audio is LPCM*/
	146	iec->status[0] &= ~IEC958_AES0_NONAUDIO;
	147
	148	iec->status[0] \|= IEC958_AES0_CON_NOT_COPYRIGHT;
	149
	150	iec->status[0] \|= IEC958_AES0_CON_EMPHASIS_NONE;
	151
50211be8 JS	152	iec->status[1] = IEC958_AES1_CON_GENERAL;
	153
	154	iec->status[2] \|= IEC958_AES2_CON_SOURCE_UNSPEC;
	155
	156	iec->status[2] \|= IEC958_AES2_CON_CHANNEL_UNSPEC;
	157
	158	switch (params_rate(params)) {
	159	case 32000:
	160	iec->status[3] \|= IEC958_AES3_CON_FS_32000;
	161	break;
	162	case 44100:
	163	iec->status[3] \|= IEC958_AES3_CON_FS_44100;
	164	break;
	165	case 48000:
	166	iec->status[3] \|= IEC958_AES3_CON_FS_48000;
	167	break;
	168	case 88200:
	169	iec->status[3] \|= IEC958_AES3_CON_FS_88200;
	170	break;
	171	case 96000:
	172	iec->status[3] \|= IEC958_AES3_CON_FS_96000;
	173	break;
	174	case 176400:
	175	iec->status[3] \|= IEC958_AES3_CON_FS_176400;
	176	break;
	177	case 192000:
	178	iec->status[3] \|= IEC958_AES3_CON_FS_192000;
	179	break;
	180	default:
	181	dev_err(dai->dev, "rate not supported!\n");
	182	return -EINVAL;
	183	}
	184
	185	/* specify the clock accuracy */
	186	iec->status[3] \|= IEC958_AES3_CON_CLOCK_1000PPM;
	187
	188	/*
	189	* specify the word length. The same word length value can mean
	190	* two different lengths. Hence, we need to specify the maximum
	191	* word length as well.
	192	*/
	193	switch (params_format(params)) {
	194	case SNDRV_PCM_FORMAT_S16_LE:
	195	iec->status[4] \|= IEC958_AES4_CON_WORDLEN_20_16;
	196	iec->status[4] &= ~IEC958_AES4_CON_MAX_WORDLEN_24;
	197	break;
	198	case SNDRV_PCM_FORMAT_S24_LE:
	199	iec->status[4] \|= IEC958_AES4_CON_WORDLEN_24_20;
	200	iec->status[4] \|= IEC958_AES4_CON_MAX_WORDLEN_24;
	201	break;
	202	default:
	203	dev_err(dai->dev, "format not supported!\n");
	204	return -EINVAL;
	205	}
	206
	207	/*
	208	* Fill the CEA-861 audio infoframe (see spec for details)
	209	*/
	210
	211	cea->db1_ct_cc = (params_channels(params) - 1)
	212	& CEA861_AUDIO_INFOFRAME_DB1CC;
	213	cea->db1_ct_cc \|= CEA861_AUDIO_INFOFRAME_DB1CT_FROM_STREAM;
	214
	215	cea->db2_sf_ss = CEA861_AUDIO_INFOFRAME_DB2SF_FROM_STREAM;
216	cea->db2_sf_ss \|= CEA861_AUDIO_INFOFRAME_DB2SS_FROM_STREAM;
217
218	cea->db3 = 0; /* not used, all zeros */
219
50211be8 JS	220	if (params_channels(params) == 2)
50211be8 JS	221	cea->db4_ca = 0x0;
88359b99 MLC	222	else if (params_channels(params) == 6)
88359b99 MLC	223	cea->db4_ca = 0xb;
50211be8 JS	224	else
	225	cea->db4_ca = 0x13;
	226
51603478 MLC	227	if (cea->db4_ca == 0x00)
	228	cea->db5_dminh_lsv = CEA861_AUDIO_INFOFRAME_DB5_DM_INH_PERMITTED;
	229	else
	230	cea->db5_dminh_lsv = CEA861_AUDIO_INFOFRAME_DB5_DM_INH_PROHIBITED;
	231
50211be8 JS	232	/* the expression is trivial but makes clear what we are doing */
	233	cea->db5_dminh_lsv \|= (0 & CEA861_AUDIO_INFOFRAME_DB5_LSV);
	234
	235	return ad->ops->audio_config(ad->dssdev, &ad->dss_audio);
	236	}
	237
	238	static int hdmi_dai_trigger(struct snd_pcm_substream *substream, int cmd,
	239	struct snd_soc_dai *dai)
	240	{
	241	struct hdmi_audio_data *ad = card_drvdata_substream(substream);
	242	int err = 0;
	243
	244	WARN_ON(ad->current_stream != substream);
	245
	246	switch (cmd) {
	247	case SNDRV_PCM_TRIGGER_START:
	248	case SNDRV_PCM_TRIGGER_RESUME:
	249	case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
	250	err = ad->ops->audio_start(ad->dssdev);
	251	break;
	252	case SNDRV_PCM_TRIGGER_STOP:
	253	case SNDRV_PCM_TRIGGER_SUSPEND:
	254	case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
	255	ad->ops->audio_stop(ad->dssdev);
	256	break;
	257	default:
	258	err = -EINVAL;
	259	}
	260	return err;
	261	}
	262
	263	static void hdmi_dai_shutdown(struct snd_pcm_substream *substream,
	264	struct snd_soc_dai *dai)
	265	{
	266	struct hdmi_audio_data *ad = card_drvdata_substream(substream);
	267
	268	WARN_ON(ad->current_stream != substream);
	269
	270	ad->ops->audio_shutdown(ad->dssdev);
	271
	272	mutex_lock(&ad->current_stream_lock);
	273	ad->current_stream = NULL;
	274	mutex_unlock(&ad->current_stream_lock);
	275	}
	276
	277	static const struct snd_soc_dai_ops hdmi_dai_ops = {
	278	.startup = hdmi_dai_startup,
	279	.hw_params = hdmi_dai_hw_params,
	280	.trigger = hdmi_dai_trigger,
	281	.shutdown = hdmi_dai_shutdown,
	282	};
	283
	284	static const struct snd_soc_component_driver omap_hdmi_component = {
	285	.name = "omapdss_hdmi",
	286	};
	287
	288	static struct snd_soc_dai_driver omap5_hdmi_dai = {
	289	.name = "omap5-hdmi-dai",
	290	.playback = {
	291	.channels_min = 2,
	292	.channels_max = 8,
	293	.rates = (SNDRV_PCM_RATE_32000 \| SNDRV_PCM_RATE_44100 \|
	294	SNDRV_PCM_RATE_48000 \| SNDRV_PCM_RATE_88200 \|
	295	SNDRV_PCM_RATE_96000 \| SNDRV_PCM_RATE_176400 \|
296	SNDRV_PCM_RATE_192000),
297	.formats = SNDRV_PCM_FMTBIT_S16_LE,
298	},
299	.ops = &hdmi_dai_ops,
300	};
301
302	static struct snd_soc_dai_driver omap4_hdmi_dai = {
303	.name = "omap4-hdmi-dai",
304	.playback = {
305	.channels_min = 2,
306	.channels_max = 8,
307	.rates = (SNDRV_PCM_RATE_32000 \| SNDRV_PCM_RATE_44100 \|
308	SNDRV_PCM_RATE_48000 \| SNDRV_PCM_RATE_88200 \|
309	SNDRV_PCM_RATE_96000 \| SNDRV_PCM_RATE_176400 \|
310	SNDRV_PCM_RATE_192000),
311	.formats = SNDRV_PCM_FMTBIT_S16_LE \| SNDRV_PCM_FMTBIT_S24_LE,
312	},
313	.ops = &hdmi_dai_ops,
314	};
315
316	static int omap_hdmi_audio_probe(struct platform_device *pdev)
317	{
318	struct omap_hdmi_audio_pdata *ha = pdev->dev.platform_data;
319	struct device *dev = &pdev->dev;
320	struct hdmi_audio_data *ad;
321	struct snd_soc_dai_driver *dai_drv;
322	struct snd_soc_card *card;
323	int ret;
324
325	if (!ha) {
326	dev_err(dev, "No platform data\n");
327	return -EINVAL;
328	}
329
330	ad = devm_kzalloc(dev, sizeof(*ad), GFP_KERNEL);
331	if (!ad)
332	return -ENOMEM;
333	ad->dssdev = ha->dev;
334	ad->ops = ha->ops;
335	ad->dma_data.addr = ha->audio_dma_addr;
336	ad->dma_data.filter_data = "audio_tx";
337	ad->dma_data.addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
338	mutex_init(&ad->current_stream_lock);
339
340	switch (ha->dss_version) {
341	case OMAPDSS_VER_OMAP4430_ES1:
342	case OMAPDSS_VER_OMAP4430_ES2:
343	case OMAPDSS_VER_OMAP4:
344	dai_drv = &omap4_hdmi_dai;
345	break;
346	case OMAPDSS_VER_OMAP5:
e04fadaa	347	case OMAPDSS_VER_DRA7xx:
50211be8 JS	348	dai_drv = &omap5_hdmi_dai;
	349	break;
	350	default:
	351	return -EINVAL;
	352	}
	353	ret = snd_soc_register_component(ad->dssdev, &omap_hdmi_component,
	354	dai_drv, 1);
	355	if (ret)
	356	return ret;
	357
	358	ret = omap_pcm_platform_register(ad->dssdev);
	359	if (ret)
	360	return ret;
	361
	362	card = devm_kzalloc(dev, sizeof(*card), GFP_KERNEL);
fb5ab729 KP	363	if (!card)
	364	return -ENOMEM;
	365
50211be8 JS	366	card->name = devm_kasprintf(dev, GFP_KERNEL,
	367	"HDMI %s", dev_name(ad->dssdev));
	368	card->owner = THIS_MODULE;
	369	card->dai_link =
	370	devm_kzalloc(dev, sizeof(*(card->dai_link)), GFP_KERNEL);
18c94a04 JL	371	if (!card->dai_link)
18c94a04 JL	372	return -ENOMEM;
50211be8 JS	373	card->dai_link->name = card->name;
	374	card->dai_link->stream_name = card->name;
	375	card->dai_link->cpu_dai_name = dev_name(ad->dssdev);
	376	card->dai_link->platform_name = dev_name(ad->dssdev);
	377	card->dai_link->codec_name = "snd-soc-dummy";
	378	card->dai_link->codec_dai_name = "snd-soc-dummy-dai";
	379	card->num_links = 1;
	380	card->dev = dev;
	381
	382	ret = snd_soc_register_card(card);
	383	if (ret) {
	384	dev_err(dev, "snd_soc_register_card failed (%d)\n", ret);
	385	snd_soc_unregister_component(ad->dssdev);
	386	return ret;
	387	}
	388
	389	ad->card = card;
	390	snd_soc_card_set_drvdata(card, ad);
	391
	392	dev_set_drvdata(dev, ad);
	393
	394	return 0;
	395	}
	396
	397	static int omap_hdmi_audio_remove(struct platform_device *pdev)
	398	{
	399	struct hdmi_audio_data *ad = platform_get_drvdata(pdev);
	400
	401	snd_soc_unregister_card(ad->card);
	402	snd_soc_unregister_component(ad->dssdev);
	403	return 0;
	404	}
	405
	406	static struct platform_driver hdmi_audio_driver = {
	407	.driver = {
	408	.name = DRV_NAME,
50211be8 JS	409	},
	410	.probe = omap_hdmi_audio_probe,
	411	.remove = omap_hdmi_audio_remove,
	412	};
	413
	414	module_platform_driver(hdmi_audio_driver);
	415
	416	MODULE_AUTHOR("Jyri Sarha <jsarha@ti.com>");
	417	MODULE_DESCRIPTION("OMAP HDMI Audio Driver");
	418	MODULE_LICENSE("GPL");
	419	MODULE_ALIAS("platform:" DRV_NAME);