ASoC: multi-component - ASoC Multi-Component Support

This patch extends the ASoC API to allow sound cards to have more than one
CODEC and more than one platform DMA controller. This is achieved by dividing
some current ASoC structures that contain both driver data and device data into
structures that only either contain device data or driver data. i.e.

 struct snd_soc_codec    --->  struct snd_soc_codec (device data)
                          +->  struct snd_soc_codec_driver (driver data)

 struct snd_soc_platform --->  struct snd_soc_platform (device data)
                          +->  struct snd_soc_platform_driver (driver data)

 struct snd_soc_dai      --->  struct snd_soc_dai (device data)
                          +->  struct snd_soc_dai_driver (driver data)

 struct snd_soc_device   --->  deleted

This now allows ASoC to be more tightly aligned with the Linux driver model and
also means that every ASoC codec, platform and (platform) DAI is a kernel
device. ASoC component private data is now stored as device private data.

The ASoC sound card struct snd_soc_card has also been updated to store lists
of it's components rather than a pointer to a codec and platform. The PCM
runtime struct soc_pcm_runtime now has pointers to all its components.

This patch adds DAPM support for ASoC multi-component and removes struct
snd_soc_socdev from DAPM core. All DAPM calls are now made on a card, codec
or runtime PCM level basis rather than using snd_soc_socdev.

Other notable multi-component changes:-

 * Stream operations now de-reference less structures.
 * close_delayed work() now runs on a DAI basis rather than looping all DAIs
   in a card.
 * PM suspend()/resume() operations can now handle N CODECs and Platforms
   per sound card.
 * Added soc_bind_dai_link() to bind the component devices to the sound card.
 * Added soc_dai_link_probe() and soc_dai_link_remove() to probe and remove
   DAI link components.
 * sysfs entries can now be registered per component per card.
 * snd_soc_new_pcms() functionailty rolled into dai_link_probe().
 * snd_soc_register_codec() now does all the codec list and mutex init.

This patch changes the probe() and remove() of the CODEC drivers as follows:-

 o Make CODEC driver a platform driver
 o Moved all struct snd_soc_codec list, mutex, etc initialiasation to core.
 o Removed all static codec pointers (drivers now support > 1 codec dev)
 o snd_soc_register_pcms() now done by core.
 o snd_soc_register_dai() folded into snd_soc_register_codec().

CS4270 portions:
Acked-by: Timur Tabi <timur@freescale.com>

Some TLV320aic23 and Cirrus platform fixes.
Signed-off-by: Ryan Mallon <ryan@bluewatersys.com>

TI CODEC and OMAP fixes
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@nokia.com>
Signed-off-by: Janusz Krzysztofik <jkrzyszt@tis.icnet.pl>
Signed-off-by: Jarkko Nikula <jhnikula@gmail.com>

Samsung platform and misc fixes :-
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Joonyoung Shim <jy0922.shim@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Reviewed-by: Jassi Brar <jassi.brar@samsung.com>
Signed-off-by: Seungwhan Youn <sw.youn@samsung.com>

MPC8610 and PPC fixes.
Signed-off-by: Timur Tabi <timur@freescale.com>

i.MX fixes and some core fixes.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

J4740 platform fixes:-
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>

CC: Tony Lindgren <tony@atomide.com>
CC: Nicolas Ferre <nicolas.ferre@atmel.com>
CC: Kevin Hilman <khilman@deeprootsystems.com>
CC: Sascha Hauer <s.hauer@pengutronix.de>
CC: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
CC: Kuninori Morimoto <morimoto.kuninori@renesas.com>
CC: Daniel Gloeckner <dg@emlix.com>
CC: Manuel Lauss <mano@roarinelk.homelinux.net>
CC: Mike Frysinger <vapier.adi@gmail.com>
CC: Arnaud Patard <apatard@mandriva.com>
CC: Wan ZongShun <mcuos.com@gmail.com>

Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>

1 files changed, 92 insertions, 201 deletions

diff --git a/sound/soc/codecs/cs42l51.c b/sound/soc/codecs/cs42l51.c
index dd9b8550c402..8a25743870c2 100644
--- a/sound/soc/codecs/cs42l51.c
+++ b/sound/soc/codecs/cs42l51.c
@@ -42,15 +42,14 @@ enum master_slave_mode {
 };
 
 struct cs42l51_private {
+	enum snd_soc_control_type control_type;
+	void *control_data;
 	unsigned int mclk;
 	unsigned int audio_mode;	/* The mode (I2S or left-justified) */
 	enum master_slave_mode func;
-	struct snd_soc_codec codec;
 	u8 reg_cache[CS42L51_NUMREGS];
 };
 
-static struct snd_soc_codec *cs42l51_codec;
-
 #define CS42L51_FORMATS ( \
 		SNDRV_PCM_FMTBIT_S16_LE  | SNDRV_PCM_FMTBIT_S16_BE  | \
 		SNDRV_PCM_FMTBIT_S18_3LE | SNDRV_PCM_FMTBIT_S18_3BE | \
@@ -75,134 +74,6 @@ static int cs42l51_fill_cache(struct snd_soc_codec *codec)
 	return 0;
 }
 
-static int cs42l51_i2c_probe(struct i2c_client *i2c_client,
-	const struct i2c_device_id *id)
-{
-	struct snd_soc_codec *codec;
-	struct cs42l51_private *cs42l51;
-	int ret = 0;
-	int reg;
-
-	if (cs42l51_codec)
-		return -EBUSY;
-
-	/* Verify that we have a CS42L51 */
-	ret = i2c_smbus_read_byte_data(i2c_client, CS42L51_CHIP_REV_ID);
-	if (ret < 0) {
-		dev_err(&i2c_client->dev, "failed to read I2C\n");
-		goto error;
-	}
-
-	if ((ret != CS42L51_MK_CHIP_REV(CS42L51_CHIP_ID, CS42L51_CHIP_REV_A)) &&
-	    (ret != CS42L51_MK_CHIP_REV(CS42L51_CHIP_ID, CS42L51_CHIP_REV_B))) {
-		dev_err(&i2c_client->dev, "Invalid chip id\n");
-		ret = -ENODEV;
-		goto error;
-	}
-
-	dev_info(&i2c_client->dev, "found device cs42l51 rev %d\n",
-				ret & 7);
-
-	cs42l51 = kzalloc(sizeof(struct cs42l51_private), GFP_KERNEL);
-	if (!cs42l51) {
-		dev_err(&i2c_client->dev, "could not allocate codec\n");
-		return -ENOMEM;
-	}
-	codec = &cs42l51->codec;
-
-	mutex_init(&codec->mutex);
-	INIT_LIST_HEAD(&codec->dapm_widgets);
-	INIT_LIST_HEAD(&codec->dapm_paths);
-
-	codec->dev = &i2c_client->dev;
-	codec->name = "CS42L51";
-	codec->owner = THIS_MODULE;
-	codec->dai = &cs42l51_dai;
-	codec->num_dai = 1;
-	snd_soc_codec_set_drvdata(codec, cs42l51);
-
-	codec->control_data = i2c_client;
-	codec->reg_cache = cs42l51->reg_cache;
-	codec->reg_cache_size = CS42L51_NUMREGS;
-	i2c_set_clientdata(i2c_client, codec);
-
-	ret = cs42l51_fill_cache(codec);
-	if (ret < 0) {
-		dev_err(&i2c_client->dev, "failed to fill register cache\n");
-		goto error_alloc;
-	}
-
-	ret = snd_soc_codec_set_cache_io(codec, 8, 8, SND_SOC_I2C);
-	if (ret < 0) {
-		dev_err(&i2c_client->dev, "Failed to set cache I/O: %d\n", ret);
-		goto error_alloc;
-	}
-
-	/*
-	 * DAC configuration
-	 * - Use signal processor
-	 * - auto mute
-	 * - vol changes immediate
-	 * - no de-emphasize
-	 */
-	reg = CS42L51_DAC_CTL_DATA_SEL(1)
-		| CS42L51_DAC_CTL_AMUTE | CS42L51_DAC_CTL_DACSZ(0);
-	ret = snd_soc_write(codec, CS42L51_DAC_CTL, reg);
-	if (ret < 0)
-		goto error_alloc;
-
-	cs42l51_dai.dev = codec->dev;
-	cs42l51_codec = codec;
-
-	ret = snd_soc_register_codec(codec);
-	if (ret != 0) {
-		dev_err(codec->dev, "Failed to register codec: %d\n", ret);
-		goto error_alloc;
-	}
-
-	ret = snd_soc_register_dai(&cs42l51_dai);
-	if (ret < 0) {
-		dev_err(&i2c_client->dev, "failed to register DAIe\n");
-		goto error_reg;
-	}
-
-	return 0;
-
-error_reg:
-	snd_soc_unregister_codec(codec);
-error_alloc:
-	kfree(cs42l51);
-error:
-	return ret;
-}
-
-static int cs42l51_i2c_remove(struct i2c_client *client)
-{
-	struct cs42l51_private *cs42l51 = i2c_get_clientdata(client);
-	snd_soc_unregister_dai(&cs42l51_dai);
-	snd_soc_unregister_codec(cs42l51_codec);
-	cs42l51_codec = NULL;
-	kfree(cs42l51);
-	return 0;
-}
-
-
-static const struct i2c_device_id cs42l51_id[] = {
-	{"cs42l51", 0},
-	{}
-};
-MODULE_DEVICE_TABLE(i2c, cs42l51_id);
-
-static struct i2c_driver cs42l51_i2c_driver = {
-	.driver = {
-		.name = "CS42L51 I2C",
-		.owner = THIS_MODULE,
-	},
-	.id_table = cs42l51_id,
-	.probe = cs42l51_i2c_probe,
-	.remove = cs42l51_i2c_remove,
-};
-
 static int cs42l51_get_chan_mix(struct snd_kcontrol *kcontrol,
 			struct snd_ctl_elem_value *ucontrol)
 {
@@ -484,51 +355,8 @@ static int cs42l51_set_dai_sysclk(struct snd_soc_dai *codec_dai,
 {
 	struct snd_soc_codec *codec = codec_dai->codec;
 	struct cs42l51_private *cs42l51 = snd_soc_codec_get_drvdata(codec);
-	struct cs42l51_ratios *ratios = NULL;
-	int nr_ratios = 0;
-	unsigned int rates = 0;
-	unsigned int rate_min = -1;
-	unsigned int rate_max = 0;
-	int i;
 
 	cs42l51->mclk = freq;
-
-	switch (cs42l51->func) {
-	case MODE_MASTER:
-		return -EINVAL;
-	case MODE_SLAVE:
-		ratios = slave_ratios;
-		nr_ratios = ARRAY_SIZE(slave_ratios);
-		break;
-	case MODE_SLAVE_AUTO:
-		ratios = slave_auto_ratios;
-		nr_ratios = ARRAY_SIZE(slave_auto_ratios);
-		break;
-	}
-
-	for (i = 0; i < nr_ratios; i++) {
-		unsigned int rate = freq / ratios[i].ratio;
-		rates |= snd_pcm_rate_to_rate_bit(rate);
-		if (rate < rate_min)
-			rate_min = rate;
-		if (rate > rate_max)
-			rate_max = rate;
-	}
-	rates &= ~SNDRV_PCM_RATE_KNOT;
-
-	if (!rates) {
-		dev_err(codec->dev, "could not find a valid sample rate\n");
-		return -EINVAL;
-	}
-
-	codec_dai->playback.rates = rates;
-	codec_dai->playback.rate_min = rate_min;
-	codec_dai->playback.rate_max = rate_max;
-
-	codec_dai->capture.rates = rates;
-	codec_dai->capture.rate_min = rate_min;
-	codec_dai->capture.rate_max = rate_max;
-
 	return 0;
 }
 
@@ -537,8 +365,7 @@ static int cs42l51_hw_params(struct snd_pcm_substream *substream,
 		struct snd_soc_dai *dai)
 {
 	struct snd_soc_pcm_runtime *rtd = substream->private_data;
-	struct snd_soc_device *socdev = rtd->socdev;
-	struct snd_soc_codec *codec = socdev->card->codec;
+	struct snd_soc_codec *codec = rtd->codec;
 	struct cs42l51_private *cs42l51 = snd_soc_codec_get_drvdata(codec);
 	int ret;
 	unsigned int i;
@@ -670,8 +497,8 @@ static struct snd_soc_dai_ops cs42l51_dai_ops = {
 	.digital_mute   = cs42l51_dai_mute,
 };
 
-struct snd_soc_dai cs42l51_dai = {
-	.name = "CS42L51 HiFi",
+static struct snd_soc_dai_driver cs42l51_dai = {
+	.name = "cs42l51-hifi",
 	.playback = {
 		.stream_name = "Playback",
 		.channels_min = 1,
@@ -688,30 +515,39 @@ struct snd_soc_dai cs42l51_dai = {
 	},
 	.ops = &cs42l51_dai_ops,
 };
-EXPORT_SYMBOL_GPL(cs42l51_dai);
-
 
-static int cs42l51_probe(struct platform_device *pdev)
+static int cs42l51_probe(struct snd_soc_codec *codec)
 {
-	struct snd_soc_device *socdev = platform_get_drvdata(pdev);
-	struct snd_soc_codec *codec;
-	int ret = 0;
+	struct cs42l51_private *cs42l51 = snd_soc_codec_get_drvdata(codec);
+	int ret, reg;
 
-	if (!cs42l51_codec) {
-		dev_err(&pdev->dev, "CS42L51 codec not yet registered\n");
-		return -EINVAL;
-	}
+	codec->control_data = cs42l51->control_data;
 
-	socdev->card->codec = cs42l51_codec;
-	codec = socdev->card->codec;
+	ret = cs42l51_fill_cache(codec);
+	if (ret < 0) {
+		dev_err(codec->dev, "failed to fill register cache\n");
+		return ret;
+	}
 
-	/* Register PCMs */
-	ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);
+	ret = snd_soc_codec_set_cache_io(codec, 8, 8, cs42l51->control_type);
 	if (ret < 0) {
-		dev_err(&pdev->dev, "failed to create PCMs\n");
+		dev_err(codec->dev, "Failed to set cache I/O: %d\n", ret);
 		return ret;
 	}
 
+	/*
+	 * DAC configuration
+	 * - Use signal processor
+	 * - auto mute
+	 * - vol changes immediate
+	 * - no de-emphasize
+	 */
+	reg = CS42L51_DAC_CTL_DATA_SEL(1)
+		| CS42L51_DAC_CTL_AMUTE | CS42L51_DAC_CTL_DACSZ(0);
+	ret = snd_soc_write(codec, CS42L51_DAC_CTL, reg);
+	if (ret < 0)
+		return ret;
+
 	snd_soc_add_controls(codec, cs42l51_snd_controls,
 		ARRAY_SIZE(cs42l51_snd_controls));
 	snd_soc_dapm_new_controls(codec, cs42l51_dapm_widgets,
@@ -722,22 +558,77 @@ static int cs42l51_probe(struct platform_device *pdev)
 	return 0;
 }
 
+static struct snd_soc_codec_driver soc_codec_device_cs42l51 = {
+	.probe =	cs42l51_probe,
+	.reg_cache_size = CS42L51_NUMREGS,
+	.reg_word_size = sizeof(u8),
+};
 
-static int cs42l51_remove(struct platform_device *pdev)
+static int cs42l51_i2c_probe(struct i2c_client *i2c_client,
+	const struct i2c_device_id *id)
 {
-	struct snd_soc_device *socdev = platform_get_drvdata(pdev);
+	struct cs42l51_private *cs42l51;
+	int ret;
 
-	snd_soc_free_pcms(socdev);
-	snd_soc_dapm_free(socdev);
+	/* Verify that we have a CS42L51 */
+	ret = i2c_smbus_read_byte_data(i2c_client, CS42L51_CHIP_REV_ID);
+	if (ret < 0) {
+		dev_err(&i2c_client->dev, "failed to read I2C\n");
+		goto error;
+	}
+
+	if ((ret != CS42L51_MK_CHIP_REV(CS42L51_CHIP_ID, CS42L51_CHIP_REV_A)) &&
+	    (ret != CS42L51_MK_CHIP_REV(CS42L51_CHIP_ID, CS42L51_CHIP_REV_B))) {
+		dev_err(&i2c_client->dev, "Invalid chip id\n");
+		ret = -ENODEV;
+		goto error;
+	}
+
+	dev_info(&i2c_client->dev, "found device cs42l51 rev %d\n",
+				ret & 7);
+
+	cs42l51 = kzalloc(sizeof(struct cs42l51_private), GFP_KERNEL);
+	if (!cs42l51) {
+		dev_err(&i2c_client->dev, "could not allocate codec\n");
+		return -ENOMEM;
+	}
+
+	i2c_set_clientdata(i2c_client, cs42l51);
+	cs42l51->control_data = i2c_client;
+	cs42l51->control_type = SND_SOC_I2C;
 
+	ret =  snd_soc_register_codec(&i2c_client->dev,
+			&soc_codec_device_cs42l51, &cs42l51_dai, 1);
+	if (ret < 0)
+		kfree(cs42l51);
+error:
+	return ret;
+}
+
+static int cs42l51_i2c_remove(struct i2c_client *client)
+{
+	struct cs42l51_private *cs42l51 = i2c_get_clientdata(client);
+
+	snd_soc_unregister_codec(&client->dev);
+	kfree(cs42l51);
 	return 0;
 }
 
-struct snd_soc_codec_device soc_codec_device_cs42l51 = {
-	.probe =	cs42l51_probe,
-	.remove =	cs42l51_remove
+static const struct i2c_device_id cs42l51_id[] = {
+	{"cs42l51", 0},
+	{}
+};
+MODULE_DEVICE_TABLE(i2c, cs42l51_id);
+
+static struct i2c_driver cs42l51_i2c_driver = {
+	.driver = {
+		.name = "cs42L51-codec",
+		.owner = THIS_MODULE,
+	},
+	.id_table = cs42l51_id,
+	.probe = cs42l51_i2c_probe,
+	.remove = cs42l51_i2c_remove,
 };
-EXPORT_SYMBOL_GPL(soc_codec_device_cs42l51);
 
 static int __init cs42l51_init(void)
 {