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, 16 insertions, 25 deletions

diff --git a/sound/soc/s3c24xx/s3c-pcm.c b/sound/soc/s3c24xx/s3c-pcm.c
index 326f0a9e7e3..653ffa27091 100644
--- a/sound/soc/s3c24xx/s3c-pcm.c
+++ b/sound/soc/s3c24xx/s3c-pcm.c
@@ -64,11 +64,6 @@ static struct s3c_dma_params s3c_pcm_stereo_in[] = {
 
 static struct s3c_pcm_info s3c_pcm[2];
 
-static inline struct s3c_pcm_info *to_info(struct snd_soc_dai *cpu_dai)
-{
-	return cpu_dai->private_data;
-}
-
 static void s3c_pcm_snd_txctrl(struct s3c_pcm_info *pcm, int on)
 {
 	void __iomem *regs = pcm->regs;
@@ -132,7 +127,7 @@ static int s3c_pcm_trigger(struct snd_pcm_substream *substream, int cmd,
 			       struct snd_soc_dai *dai)
 {
 	struct snd_soc_pcm_runtime *rtd = substream->private_data;
-	struct s3c_pcm_info *pcm = to_info(rtd->dai->cpu_dai);
+	struct s3c_pcm_info *pcm = snd_soc_dai_get_drvdata(rtd->cpu_dai);
 	unsigned long flags;
 
 	dev_dbg(pcm->dev, "Entered %s\n", __func__);
@@ -176,8 +171,7 @@ static int s3c_pcm_hw_params(struct snd_pcm_substream *substream,
 				 struct snd_soc_dai *socdai)
 {
 	struct snd_soc_pcm_runtime *rtd = substream->private_data;
-	struct snd_soc_dai_link *dai = rtd->dai;
-	struct s3c_pcm_info *pcm = to_info(dai->cpu_dai);
+	struct s3c_pcm_info *pcm = snd_soc_dai_get_drvdata(rtd->cpu_dai);
 	struct s3c_dma_params *dma_data;
 	void __iomem *regs = pcm->regs;
 	struct clk *clk;
@@ -192,7 +186,7 @@ static int s3c_pcm_hw_params(struct snd_pcm_substream *substream,
 	else
 		dma_data = pcm->dma_capture;
 
-	snd_soc_dai_set_dma_data(dai->cpu_dai, substream, dma_data);
+	snd_soc_dai_set_dma_data(rtd->cpu_dai, substream, dma_data);
 
 	/* Strictly check for sample size */
 	switch (params_format(params)) {
@@ -242,7 +236,7 @@ static int s3c_pcm_hw_params(struct snd_pcm_substream *substream,
 static int s3c_pcm_set_fmt(struct snd_soc_dai *cpu_dai,
 			       unsigned int fmt)
 {
-	struct s3c_pcm_info *pcm = to_info(cpu_dai);
+	struct s3c_pcm_info *pcm = snd_soc_dai_get_drvdata(cpu_dai);
 	void __iomem *regs = pcm->regs;
 	unsigned long flags;
 	int ret = 0;
@@ -313,7 +307,7 @@ exit:
 static int s3c_pcm_set_clkdiv(struct snd_soc_dai *cpu_dai,
 						int div_id, int div)
 {
-	struct s3c_pcm_info *pcm = to_info(cpu_dai);
+	struct s3c_pcm_info *pcm = snd_soc_dai_get_drvdata(cpu_dai);
 
 	switch (div_id) {
 	case S3C_PCM_SCLK_PER_FS:
@@ -330,7 +324,7 @@ static int s3c_pcm_set_clkdiv(struct snd_soc_dai *cpu_dai,
 static int s3c_pcm_set_sysclk(struct snd_soc_dai *cpu_dai,
 				  int clk_id, unsigned int freq, int dir)
 {
-	struct s3c_pcm_info *pcm = to_info(cpu_dai);
+	struct s3c_pcm_info *pcm = snd_soc_dai_get_drvdata(cpu_dai);
 	void __iomem *regs = pcm->regs;
 	u32 clkctl = readl(regs + S3C_PCM_CLKCTL);
 
@@ -366,10 +360,9 @@ static struct snd_soc_dai_ops s3c_pcm_dai_ops = {
 
 #define S3C_PCM_RATES  SNDRV_PCM_RATE_8000_96000
 
-#define S3C_PCM_DECLARE(n)			\
+#define S3C_PCM_DAI_DECLARE			\
 {								\
-	.name		 = "samsung-pcm",			\
-	.id		 = (n),				\
+	.name		 = "samsung-dai",			\
 	.symmetric_rates = 1,					\
 	.ops = &s3c_pcm_dai_ops,				\
 	.playback = {						\
@@ -386,16 +379,15 @@ static struct snd_soc_dai_ops s3c_pcm_dai_ops = {
 	},							\
 }
 
-struct snd_soc_dai s3c_pcm_dai[] = {
-	S3C_PCM_DECLARE(0),
-	S3C_PCM_DECLARE(1),
+struct snd_soc_dai_driver s3c_pcm_dai[] = {
+	S3C_PCM_DAI_DECLARE,
+	S3C_PCM_DAI_DECLARE,
 };
 EXPORT_SYMBOL_GPL(s3c_pcm_dai);
 
 static __devinit int s3c_pcm_dev_probe(struct platform_device *pdev)
 {
 	struct s3c_pcm_info *pcm;
-	struct snd_soc_dai *dai;
 	struct resource *mem_res, *dmatx_res, *dmarx_res;
 	struct s3c_audio_pdata *pcm_pdata;
 	int ret;
@@ -437,9 +429,6 @@ static __devinit int s3c_pcm_dev_probe(struct platform_device *pdev)
 
 	spin_lock_init(&pcm->lock);
 
-	dai = &s3c_pcm_dai[pdev->id];
-	dai->dev = &pdev->dev;
-
 	/* Default is 128fs */
 	pcm->sclk_per_fs = 128;
 
@@ -452,7 +441,7 @@ static __devinit int s3c_pcm_dev_probe(struct platform_device *pdev)
 	clk_enable(pcm->cclk);
 
 	/* record our pcm structure for later use in the callbacks */
-	dai->private_data = pcm;
+	dev_set_drvdata(&pdev->dev, pcm);
 
 	if (!request_mem_region(mem_res->start,
 				resource_size(mem_res), "samsung-pcm")) {
@@ -476,7 +465,7 @@ static __devinit int s3c_pcm_dev_probe(struct platform_device *pdev)
 	}
 	clk_enable(pcm->pclk);
 
-	ret = snd_soc_register_dai(dai);
+	ret = snd_soc_register_dai(&pdev->dev, s3c_pcm_dai);
 	if (ret != 0) {
 		dev_err(&pdev->dev, "failed to get pcm_clock\n");
 		goto err5;
@@ -514,6 +503,8 @@ static __devexit int s3c_pcm_dev_remove(struct platform_device *pdev)
 	struct s3c_pcm_info *pcm = &s3c_pcm[pdev->id];
 	struct resource *mem_res;
 
+	snd_soc_unregister_dai(&pdev->dev);
+
 	iounmap(pcm->regs);
 
 	mem_res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
@@ -531,7 +522,7 @@ static struct platform_driver s3c_pcm_driver = {
 	.probe  = s3c_pcm_dev_probe,
 	.remove = s3c_pcm_dev_remove,
 	.driver = {
-		.name = "samsung-pcm",
+		.name = "samsung-pcm-audio",
 		.owner = THIS_MODULE,
 	},
 };