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, 26 insertions, 90 deletions

diff --git a/sound/soc/codecs/jz4740.c b/sound/soc/codecs/jz4740.c
index 66557de1e4fe..16253ec9b022 100644
--- a/sound/soc/codecs/jz4740.c
+++ b/sound/soc/codecs/jz4740.c
@@ -74,29 +74,22 @@ static const uint32_t jz4740_codec_regs[] = {
 struct jz4740_codec {
 	void __iomem *base;
 	struct resource *mem;
-
-	uint32_t reg_cache[2];
-	struct snd_soc_codec codec;
 };
 
-static inline struct jz4740_codec *codec_to_jz4740(struct snd_soc_codec *codec)
-{
-	return container_of(codec, struct jz4740_codec, codec);
-}
-
 static unsigned int jz4740_codec_read(struct snd_soc_codec *codec,
 	unsigned int reg)
 {
-	struct jz4740_codec *jz4740_codec = codec_to_jz4740(codec);
+	struct jz4740_codec *jz4740_codec = snd_soc_codec_get_drvdata(codec);
 	return readl(jz4740_codec->base + (reg << 2));
 }
 
 static int jz4740_codec_write(struct snd_soc_codec *codec, unsigned int reg,
 	unsigned int val)
 {
-	struct jz4740_codec *jz4740_codec = codec_to_jz4740(codec);
+	struct jz4740_codec *jz4740_codec = snd_soc_codec_get_drvdata(codec);
+	u32 *cache = codec->reg_cache;
 
-	jz4740_codec->reg_cache[reg] = val;
+	cache[reg] = val;
 	writel(val, jz4740_codec->base + (reg << 2));
 
 	return 0;
@@ -172,8 +165,7 @@ static int jz4740_codec_hw_params(struct snd_pcm_substream *substream,
 {
 	uint32_t val;
 	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;
 
 	switch (params_rate(params)) {
 	case 8000:
@@ -219,8 +211,8 @@ static struct snd_soc_dai_ops jz4740_codec_dai_ops = {
 	.hw_params = jz4740_codec_hw_params,
 };
 
-struct snd_soc_dai jz4740_codec_dai = {
-	.name = "jz4740",
+static struct snd_soc_dai_driver jz4740_codec_dai = {
+	.name = "jz4740-hifi",
 	.playback = {
 		.stream_name = "Playback",
 		.channels_min = 2,
@@ -238,7 +230,6 @@ struct snd_soc_dai jz4740_codec_dai = {
 	.ops = &jz4740_codec_dai_ops,
 	.symmetric_rates = 1,
 };
-EXPORT_SYMBOL_GPL(jz4740_codec_dai);
 
 static void jz4740_codec_wakeup(struct snd_soc_codec *codec)
 {
@@ -302,23 +293,10 @@ static int jz4740_codec_set_bias_level(struct snd_soc_codec *codec,
 	return 0;
 }
 
-static struct snd_soc_codec *jz4740_codec_codec;
-
-static int jz4740_codec_dev_probe(struct platform_device *pdev)
+static int jz4740_codec_dev_probe(struct snd_soc_codec *codec)
 {
-	int ret;
-	struct snd_soc_device *socdev = platform_get_drvdata(pdev);
-	struct snd_soc_codec *codec = jz4740_codec_codec;
-
-	BUG_ON(!codec);
-
-	socdev->card->codec = codec;
-
-	ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);
-	if (ret) {
-		dev_err(&pdev->dev, "Failed to create pcms: %d\n", ret);
-		return ret;
-	}
+	snd_soc_update_bits(codec, JZ4740_REG_CODEC_1,
+			JZ4740_CODEC_1_SW2_ENABLE, JZ4740_CODEC_1_SW2_ENABLE);
 
 	snd_soc_add_controls(codec, jz4740_codec_controls,
 		ARRAY_SIZE(jz4740_codec_controls));
@@ -331,34 +309,27 @@ static int jz4740_codec_dev_probe(struct platform_device *pdev)
 
 	snd_soc_dapm_new_widgets(codec);
 
+	jz4740_codec_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
+
 	return 0;
 }
 
-static int jz4740_codec_dev_remove(struct platform_device *pdev)
+static int jz4740_codec_dev_remove(struct snd_soc_codec *codec)
 {
-	struct snd_soc_device *socdev = platform_get_drvdata(pdev);
-
-	snd_soc_free_pcms(socdev);
-	snd_soc_dapm_free(socdev);
+	jz4740_codec_set_bias_level(codec, SND_SOC_BIAS_OFF);
 
 	return 0;
 }
 
 #ifdef CONFIG_PM_SLEEP
 
-static int jz4740_codec_suspend(struct platform_device *pdev, pm_message_t state)
+static int jz4740_codec_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;
-
 	return jz4740_codec_set_bias_level(codec, SND_SOC_BIAS_OFF);
 }
 
-static int jz4740_codec_resume(struct platform_device *pdev)
+static int jz4740_codec_resume(struct snd_soc_codec *codec)
 {
-	struct snd_soc_device *socdev = platform_get_drvdata(pdev);
-	struct snd_soc_codec *codec = socdev->card->codec;
-
 	return jz4740_codec_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
 }
 
@@ -367,19 +338,23 @@ static int jz4740_codec_resume(struct platform_device *pdev)
 #define jz4740_codec_resume NULL
 #endif
 
-struct snd_soc_codec_device soc_codec_dev_jz4740_codec = {
+static struct snd_soc_codec_driver soc_codec_dev_jz4740_codec = {
 	.probe = jz4740_codec_dev_probe,
 	.remove = jz4740_codec_dev_remove,
 	.suspend = jz4740_codec_suspend,
 	.resume = jz4740_codec_resume,
+	.read = jz4740_codec_read,
+	.write = jz4740_codec_write,
+	.set_bias_level = jz4740_codec_set_bias_level,
+	.reg_cache_default	= jz4740_codec_regs,
+	.reg_word_size = sizeof(u32),
+	.reg_cache_size	= 2,
 };
-EXPORT_SYMBOL_GPL(soc_codec_dev_jz4740_codec);
 
 static int __devinit jz4740_codec_probe(struct platform_device *pdev)
 {
 	int ret;
 	struct jz4740_codec *jz4740_codec;
-	struct snd_soc_codec *codec;
 	struct resource *mem;
 
 	jz4740_codec = kzalloc(sizeof(*jz4740_codec), GFP_KERNEL);
@@ -408,55 +383,17 @@ static int __devinit jz4740_codec_probe(struct platform_device *pdev)
 	}
 	jz4740_codec->mem = mem;
 
-	jz4740_codec_dai.dev = &pdev->dev;
-
-	codec = &jz4740_codec->codec;
-
-	codec->dev		= &pdev->dev;
-	codec->name		= "jz4740";
-	codec->owner		= THIS_MODULE;
-
-	codec->read		= jz4740_codec_read;
-	codec->write		= jz4740_codec_write;
-	codec->set_bias_level	= jz4740_codec_set_bias_level;
-	codec->bias_level	= SND_SOC_BIAS_OFF;
-
-	codec->dai		= &jz4740_codec_dai;
-	codec->num_dai		= 1;
-
-	codec->reg_cache	= jz4740_codec->reg_cache;
-	codec->reg_cache_size	= 2;
-	memcpy(codec->reg_cache, jz4740_codec_regs, sizeof(jz4740_codec_regs));
-
-	mutex_init(&codec->mutex);
-	INIT_LIST_HEAD(&codec->dapm_widgets);
-	INIT_LIST_HEAD(&codec->dapm_paths);
-
-	jz4740_codec_codec = codec;
-
-	snd_soc_update_bits(codec, JZ4740_REG_CODEC_1,
-			JZ4740_CODEC_1_SW2_ENABLE, JZ4740_CODEC_1_SW2_ENABLE);
-
 	platform_set_drvdata(pdev, jz4740_codec);
 
-	ret = snd_soc_register_codec(codec);
+	ret = snd_soc_register_codec(&pdev->dev,
+			&soc_codec_dev_jz4740_codec, &jz4740_codec_dai, 1);
 	if (ret) {
 		dev_err(&pdev->dev, "Failed to register codec\n");
 		goto err_iounmap;
 	}
 
-	ret = snd_soc_register_dai(&jz4740_codec_dai);
-	if (ret) {
-		dev_err(&pdev->dev, "Failed to register codec dai\n");
-		goto err_unregister_codec;
-	}
-
-	jz4740_codec_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
-
 	return 0;
 
-err_unregister_codec:
-	snd_soc_unregister_codec(codec);
 err_iounmap:
 	iounmap(jz4740_codec->base);
 err_release_mem_region:
@@ -472,8 +409,7 @@ static int __devexit jz4740_codec_remove(struct platform_device *pdev)
 	struct jz4740_codec *jz4740_codec = platform_get_drvdata(pdev);
 	struct resource *mem = jz4740_codec->mem;
 
-	snd_soc_unregister_dai(&jz4740_codec_dai);
-	snd_soc_unregister_codec(&jz4740_codec->codec);
+	snd_soc_unregister_codec(&pdev->dev);
 
 	iounmap(jz4740_codec->base);
 	release_mem_region(mem->start, resource_size(mem));