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, 82 insertions, 167 deletions

diff --git a/sound/soc/codecs/tlv320dac33.c b/sound/soc/codecs/tlv320dac33.c
index 8651b01ed22..a3c5b521da6 100644
--- a/sound/soc/codecs/tlv320dac33.c
+++ b/sound/soc/codecs/tlv320dac33.c
@@ -66,8 +66,6 @@
 static void dac33_calculate_times(struct snd_pcm_substream *substream);
 static int dac33_prepare_chip(struct snd_pcm_substream *substream);
 
-static struct snd_soc_codec *tlv320dac33_codec;
-
 enum dac33_state {
 	DAC33_IDLE = 0,
 	DAC33_PREFILL,
@@ -93,7 +91,7 @@ struct tlv320dac33_priv {
 	struct mutex mutex;
 	struct workqueue_struct *dac33_wq;
 	struct work_struct work;
-	struct snd_soc_codec codec;
+	struct snd_soc_codec *codec;
 	struct regulator_bulk_data supplies[DAC33_NUM_SUPPLIES];
 	struct snd_pcm_substream *substream;
 	int power_gpio;
@@ -128,6 +126,8 @@ struct tlv320dac33_priv {
 	unsigned int uthr;
 
 	enum dac33_state state;
+	enum snd_soc_control_type control_type;
+	void *control_data;
 };
 
 static const u8 dac33_reg[DAC33_CACHEREGNUM] = {
@@ -650,9 +650,7 @@ static int dac33_set_bias_level(struct snd_soc_codec *codec,
 
 static inline void dac33_prefill_handler(struct tlv320dac33_priv *dac33)
 {
-	struct snd_soc_codec *codec;
-
-	codec = &dac33->codec;
+	struct snd_soc_codec *codec = dac33->codec;
 
 	switch (dac33->fifo_mode) {
 	case DAC33_FIFO_MODE1:
@@ -695,9 +693,7 @@ static inline void dac33_prefill_handler(struct tlv320dac33_priv *dac33)
 
 static inline void dac33_playback_handler(struct tlv320dac33_priv *dac33)
 {
-	struct snd_soc_codec *codec;
-
-	codec = &dac33->codec;
+	struct snd_soc_codec *codec = dac33->codec;
 
 	switch (dac33->fifo_mode) {
 	case DAC33_FIFO_MODE1:
@@ -726,7 +722,7 @@ static void dac33_work(struct work_struct *work)
 	u8 reg;
 
 	dac33 = container_of(work, struct tlv320dac33_priv, work);
-	codec = &dac33->codec;
+	codec = dac33->codec;
 
 	mutex_lock(&dac33->mutex);
 	switch (dac33->state) {
@@ -787,8 +783,7 @@ static int dac33_startup(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 tlv320dac33_priv *dac33 = snd_soc_codec_get_drvdata(codec);
 
 	/* Stream started, save the substream pointer */
@@ -801,8 +796,7 @@ static void dac33_shutdown(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 tlv320dac33_priv *dac33 = snd_soc_codec_get_drvdata(codec);
 
 	dac33->substream = NULL;
@@ -817,8 +811,7 @@ static int dac33_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;
 
 	/* Check parameters for validity */
 	switch (params_rate(params)) {
@@ -856,8 +849,7 @@ static int dac33_hw_params(struct snd_pcm_substream *substream,
 static int dac33_prepare_chip(struct snd_pcm_substream *substream)
 {
 	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 tlv320dac33_priv *dac33 = snd_soc_codec_get_drvdata(codec);
 	unsigned int oscset, ratioset, pwr_ctrl, reg_tmp;
 	u8 aictrl_a, aictrl_b, fifoctrl_a;
@@ -1049,8 +1041,7 @@ static int dac33_prepare_chip(struct snd_pcm_substream *substream)
 static void dac33_calculate_times(struct snd_pcm_substream *substream)
 {
 	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 tlv320dac33_priv *dac33 = snd_soc_codec_get_drvdata(codec);
 	unsigned int period_size = substream->runtime->period_size;
 	unsigned int rate = substream->runtime->rate;
@@ -1129,8 +1120,7 @@ static int dac33_pcm_trigger(struct snd_pcm_substream *substream, int cmd,
 			     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 tlv320dac33_priv *dac33 = snd_soc_codec_get_drvdata(codec);
 	int ret = 0;
 
@@ -1163,8 +1153,7 @@ static snd_pcm_sframes_t dac33_dai_delay(
 			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 tlv320dac33_priv *dac33 = snd_soc_codec_get_drvdata(codec);
 	unsigned long long t0, t1, t_now;
 	unsigned int time_delta, uthr;
@@ -1389,24 +1378,47 @@ static int dac33_set_dai_fmt(struct snd_soc_dai *codec_dai,
 	return 0;
 }
 
-static int dac33_soc_probe(struct platform_device *pdev)
+static int dac33_soc_probe(struct snd_soc_codec *codec)
 {
-	struct snd_soc_device *socdev = platform_get_drvdata(pdev);
-	struct snd_soc_codec *codec;
-	struct tlv320dac33_priv *dac33;
+	struct tlv320dac33_priv *dac33 = snd_soc_codec_get_drvdata(codec);
 	int ret = 0;
 
-	BUG_ON(!tlv320dac33_codec);
+	codec->control_data = dac33->control_data;
+	codec->hw_write = (hw_write_t) i2c_master_send;
+	codec->bias_level = SND_SOC_BIAS_OFF;
+	codec->idle_bias_off = 1;
+	dac33->codec = codec;
 
-	codec = tlv320dac33_codec;
-	socdev->card->codec = codec;
-	dac33 = snd_soc_codec_get_drvdata(codec);
+	/* Read the tlv320dac33 ID registers */
+	ret = dac33_hard_power(codec, 1);
+	if (ret != 0) {
+		dev_err(codec->dev, "Failed to power up codec: %d\n", ret);
+		goto err_power;
+	}
+	dac33_read_id(codec);
+	dac33_hard_power(codec, 0);
 
-	/* register pcms */
-	ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);
-	if (ret < 0) {
-		dev_err(codec->dev, "failed to create pcms\n");
-		goto pcm_err;
+	/* Check if the IRQ number is valid and request it */
+	if (dac33->irq >= 0) {
+		ret = request_irq(dac33->irq, dac33_interrupt_handler,
+				  IRQF_TRIGGER_RISING | IRQF_DISABLED,
+				  codec->name, codec);
+		if (ret < 0) {
+			dev_err(codec->dev, "Could not request IRQ%d (%d)\n",
+						dac33->irq, ret);
+			dac33->irq = -1;
+		}
+		if (dac33->irq != -1) {
+			/* Setup work queue */
+			dac33->dac33_wq =
+				create_singlethread_workqueue("tlv320dac33");
+			if (dac33->dac33_wq == NULL) {
+				free_irq(dac33->irq, codec);
+				return -ENOMEM;
+			}
+
+			INIT_WORK(&dac33->work, dac33_work);
+		}
 	}
 
 	snd_soc_add_controls(codec, dac33_snd_controls,
@@ -1420,56 +1432,51 @@ static int dac33_soc_probe(struct platform_device *pdev)
 			snd_soc_add_controls(codec, dac33_fifo_snd_controls,
 					ARRAY_SIZE(dac33_fifo_snd_controls));
 	}
-
 	dac33_add_widgets(codec);
 
-	return 0;
-
-pcm_err:
-	dac33_hard_power(codec, 0);
+err_power:
 	return ret;
 }
 
-static int dac33_soc_remove(struct platform_device *pdev)
+static int dac33_soc_remove(struct snd_soc_codec *codec)
 {
-	struct snd_soc_device *socdev = platform_get_drvdata(pdev);
-	struct snd_soc_codec *codec = socdev->card->codec;
+	struct tlv320dac33_priv *dac33 = snd_soc_codec_get_drvdata(codec);
 
 	dac33_set_bias_level(codec, SND_SOC_BIAS_OFF);
 
-	snd_soc_free_pcms(socdev);
-	snd_soc_dapm_free(socdev);
-
+	if (dac33->irq >= 0) {
+		free_irq(dac33->irq, dac33->codec);
+		destroy_workqueue(dac33->dac33_wq);
+	}
 	return 0;
 }
 
-static int dac33_soc_suspend(struct platform_device *pdev, pm_message_t state)
+static int dac33_soc_suspend(struct snd_soc_codec *codec, pm_message_t state)
 {
-	struct snd_soc_device *socdev = platform_get_drvdata(pdev);
-	struct snd_soc_codec *codec = socdev->card->codec;
-
 	dac33_set_bias_level(codec, SND_SOC_BIAS_OFF);
 
 	return 0;
 }
 
-static int dac33_soc_resume(struct platform_device *pdev)
+static int dac33_soc_resume(struct snd_soc_codec *codec)
 {
-	struct snd_soc_device *socdev = platform_get_drvdata(pdev);
-	struct snd_soc_codec *codec = socdev->card->codec;
-
 	dac33_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
 
 	return 0;
 }
 
-struct snd_soc_codec_device soc_codec_dev_tlv320dac33 = {
+static struct snd_soc_codec_driver soc_codec_dev_tlv320dac33 = {
+	.read = dac33_read_reg_cache,
+	.write = dac33_write_locked,
+	.set_bias_level = dac33_set_bias_level,
+	.reg_cache_size = ARRAY_SIZE(dac33_reg),
+	.reg_word_size = sizeof(u8),
+	.reg_cache_default = dac33_reg,
 	.probe = dac33_soc_probe,
 	.remove = dac33_soc_remove,
 	.suspend = dac33_soc_suspend,
 	.resume = dac33_soc_resume,
 };
-EXPORT_SYMBOL_GPL(soc_codec_dev_tlv320dac33);
 
 #define DAC33_RATES	(SNDRV_PCM_RATE_44100 | \
 			 SNDRV_PCM_RATE_48000)
@@ -1485,8 +1492,8 @@ static struct snd_soc_dai_ops dac33_dai_ops = {
 	.set_fmt	= dac33_set_dai_fmt,
 };
 
-struct snd_soc_dai dac33_dai = {
-	.name = "tlv320dac33",
+static struct snd_soc_dai_driver dac33_dai = {
+	.name = "tlv320dac33-hifi",
 	.playback = {
 		.stream_name = "Playback",
 		.channels_min = 2,
@@ -1495,14 +1502,12 @@ struct snd_soc_dai dac33_dai = {
 		.formats = DAC33_FORMATS,},
 	.ops = &dac33_dai_ops,
 };
-EXPORT_SYMBOL_GPL(dac33_dai);
 
 static int __devinit dac33_i2c_probe(struct i2c_client *client,
 				     const struct i2c_device_id *id)
 {
 	struct tlv320dac33_platform_data *pdata;
 	struct tlv320dac33_priv *dac33;
-	struct snd_soc_codec *codec;
 	int ret, i;
 
 	if (client->dev.platform_data == NULL) {
@@ -1515,33 +1520,9 @@ static int __devinit dac33_i2c_probe(struct i2c_client *client,
 	if (dac33 == NULL)
 		return -ENOMEM;
 
-	codec = &dac33->codec;
-	snd_soc_codec_set_drvdata(codec, dac33);
-	codec->control_data = client;
-
-	mutex_init(&codec->mutex);
+	dac33->control_data = client;
 	mutex_init(&dac33->mutex);
 	spin_lock_init(&dac33->lock);
-	INIT_LIST_HEAD(&codec->dapm_widgets);
-	INIT_LIST_HEAD(&codec->dapm_paths);
-
-	codec->name = "tlv320dac33";
-	codec->owner = THIS_MODULE;
-	codec->read = dac33_read_reg_cache;
-	codec->write = dac33_write_locked;
-	codec->hw_write = (hw_write_t) i2c_master_send;
-	codec->bias_level = SND_SOC_BIAS_OFF;
-	codec->set_bias_level = dac33_set_bias_level;
-	codec->idle_bias_off = 1;
-	codec->dai = &dac33_dai;
-	codec->num_dai = 1;
-	codec->reg_cache_size = ARRAY_SIZE(dac33_reg);
-	codec->reg_cache = kmemdup(dac33_reg, ARRAY_SIZE(dac33_reg),
-				   GFP_KERNEL);
-	if (codec->reg_cache == NULL) {
-		ret = -ENOMEM;
-		goto error_reg;
-	}
 
 	i2c_set_clientdata(client, dac33);
 
@@ -1561,125 +1542,59 @@ static int __devinit dac33_i2c_probe(struct i2c_client *client,
 	/* Disable FIFO use by default */
 	dac33->fifo_mode = DAC33_FIFO_BYPASS;
 
-	tlv320dac33_codec = codec;
-
-	codec->dev = &client->dev;
-	dac33_dai.dev = codec->dev;
-
 	/* Check if the reset GPIO number is valid and request it */
 	if (dac33->power_gpio >= 0) {
 		ret = gpio_request(dac33->power_gpio, "tlv320dac33 reset");
 		if (ret < 0) {
-			dev_err(codec->dev,
+			dev_err(&client->dev,
 				"Failed to request reset GPIO (%d)\n",
 				dac33->power_gpio);
-			snd_soc_unregister_dai(&dac33_dai);
-			snd_soc_unregister_codec(codec);
-			goto error_gpio;
+			goto err_gpio;
 		}
 		gpio_direction_output(dac33->power_gpio, 0);
 	}
 
-	/* Check if the IRQ number is valid and request it */
-	if (dac33->irq >= 0) {
-		ret = request_irq(dac33->irq, dac33_interrupt_handler,
-				  IRQF_TRIGGER_RISING | IRQF_DISABLED,
-				  codec->name, codec);
-		if (ret < 0) {
-			dev_err(codec->dev, "Could not request IRQ%d (%d)\n",
-						dac33->irq, ret);
-			dac33->irq = -1;
-		}
-		if (dac33->irq != -1) {
-			/* Setup work queue */
-			dac33->dac33_wq =
-				create_singlethread_workqueue("tlv320dac33");
-			if (dac33->dac33_wq == NULL) {
-				free_irq(dac33->irq, &dac33->codec);
-				ret = -ENOMEM;
-				goto error_wq;
-			}
-
-			INIT_WORK(&dac33->work, dac33_work);
-		}
-	}
-
 	for (i = 0; i < ARRAY_SIZE(dac33->supplies); i++)
 		dac33->supplies[i].supply = dac33_supply_names[i];
 
-	ret = regulator_bulk_get(codec->dev, ARRAY_SIZE(dac33->supplies),
+	ret = regulator_bulk_get(&client->dev, ARRAY_SIZE(dac33->supplies),
 				 dac33->supplies);
 
 	if (ret != 0) {
-		dev_err(codec->dev, "Failed to request supplies: %d\n", ret);
+		dev_err(&client->dev, "Failed to request supplies: %d\n", ret);
 		goto err_get;
 	}
 
-	/* Read the tlv320dac33 ID registers */
-	ret = dac33_hard_power(codec, 1);
-	if (ret != 0) {
-		dev_err(codec->dev, "Failed to power up codec: %d\n", ret);
-		goto error_codec;
-	}
-	dac33_read_id(codec);
-	dac33_hard_power(codec, 0);
-
-	ret = snd_soc_register_codec(codec);
-	if (ret != 0) {
-		dev_err(codec->dev, "Failed to register codec: %d\n", ret);
-		goto error_codec;
-	}
-
-	ret = snd_soc_register_dai(&dac33_dai);
-	if (ret != 0) {
-		dev_err(codec->dev, "Failed to register DAI: %d\n", ret);
-		snd_soc_unregister_codec(codec);
-		goto error_codec;
-	}
+	ret = snd_soc_register_codec(&client->dev,
+			&soc_codec_dev_tlv320dac33, &dac33_dai, 1);
+	if (ret < 0)
+		goto err_register;
 
 	return ret;
-
-error_codec:
+err_register:
 	regulator_bulk_free(ARRAY_SIZE(dac33->supplies), dac33->supplies);
 err_get:
-	if (dac33->irq >= 0) {
-		free_irq(dac33->irq, &dac33->codec);
-		destroy_workqueue(dac33->dac33_wq);
-	}
-error_wq:
 	if (dac33->power_gpio >= 0)
 		gpio_free(dac33->power_gpio);
-error_gpio:
-	kfree(codec->reg_cache);
-error_reg:
-	tlv320dac33_codec = NULL;
+err_gpio:
 	kfree(dac33);
-
 	return ret;
 }
 
 static int __devexit dac33_i2c_remove(struct i2c_client *client)
 {
-	struct tlv320dac33_priv *dac33;
-
-	dac33 = i2c_get_clientdata(client);
+	struct tlv320dac33_priv *dac33 = i2c_get_clientdata(client);
 
 	if (unlikely(dac33->chip_power))
-		dac33_hard_power(&dac33->codec, 0);
+		dac33_hard_power(dac33->codec, 0);
 
 	if (dac33->power_gpio >= 0)
 		gpio_free(dac33->power_gpio);
-	if (dac33->irq >= 0)
-		free_irq(dac33->irq, &dac33->codec);
 
 	regulator_bulk_free(ARRAY_SIZE(dac33->supplies), dac33->supplies);
 
-	destroy_workqueue(dac33->dac33_wq);
-	snd_soc_unregister_dai(&dac33_dai);
-	snd_soc_unregister_codec(&dac33->codec);
-	kfree(dac33->codec.reg_cache);
+	snd_soc_unregister_codec(&client->dev);
 	kfree(dac33);
-	tlv320dac33_codec = NULL;
 
 	return 0;
 }
@@ -1694,7 +1609,7 @@ static const struct i2c_device_id tlv320dac33_i2c_id[] = {
 
 static struct i2c_driver tlv320dac33_i2c_driver = {
 	.driver = {
-		.name = "tlv320dac33",
+		.name = "tlv320dac33-codec",
 		.owner = THIS_MODULE,
 	},
 	.probe		= dac33_i2c_probe,