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, 32 insertions, 13 deletions

diff --git a/sound/soc/pxa/pxa2xx-pcm.c b/sound/soc/pxa/pxa2xx-pcm.c
index adc7e6f15f93..5127044acfec 100644
--- a/sound/soc/pxa/pxa2xx-pcm.c
+++ b/sound/soc/pxa/pxa2xx-pcm.c
@@ -28,7 +28,7 @@ static int pxa2xx_pcm_hw_params(struct snd_pcm_substream *substream,
         struct pxa2xx_pcm_dma_params *dma;
         int ret;
 
-        dma = snd_soc_dai_get_dma_data(rtd->dai->cpu_dai, substream);
+        dma = snd_soc_dai_get_dma_data(rtd->cpu_dai, substream);
 
         /* return if this is a bufferless transfer e.g.
          * codec <--> BT codec or GSM modem -- lg FIXME */
@@ -95,14 +95,14 @@ static int pxa2xx_soc_pcm_new(struct snd_card *card, struct snd_soc_dai *dai,
         if (!card->dev->coherent_dma_mask)
                 card->dev->coherent_dma_mask = DMA_BIT_MASK(32);
 
-        if (dai->playback.channels_min) {
+        if (dai->driver->playback.channels_min) {
                 ret = pxa2xx_pcm_preallocate_dma_buffer(pcm,
                         SNDRV_PCM_STREAM_PLAYBACK);
                 if (ret)
                         goto out;
         }
 
-        if (dai->capture.channels_min) {
+        if (dai->driver->capture.channels_min) {
                 ret = pxa2xx_pcm_preallocate_dma_buffer(pcm,
                         SNDRV_PCM_STREAM_CAPTURE);
                 if (ret)
@@ -112,25 +112,44 @@ static int pxa2xx_soc_pcm_new(struct snd_card *card, struct snd_soc_dai *dai,
         return ret;
 }
 
-struct snd_soc_platform pxa2xx_soc_platform = {
-        .name           = "pxa2xx-audio",
-        .pcm_ops        = &pxa2xx_pcm_ops,
+static struct snd_soc_platform_driver pxa2xx_soc_platform = {
+        .ops    = &pxa2xx_pcm_ops,
         .pcm_new        = pxa2xx_soc_pcm_new,
         .pcm_free       = pxa2xx_pcm_free_dma_buffers,
 };
-EXPORT_SYMBOL_GPL(pxa2xx_soc_platform);
 
-static int __init pxa2xx_soc_platform_init(void)
+static int __devinit pxa2xx_soc_platform_probe(struct platform_device *pdev)
 {
-        return snd_soc_register_platform(&pxa2xx_soc_platform);
+        return snd_soc_register_platform(&pdev->dev, &pxa2xx_soc_platform);
 }
-module_init(pxa2xx_soc_platform_init);
 
-static void __exit pxa2xx_soc_platform_exit(void)
+static int __devexit pxa2xx_soc_platform_remove(struct platform_device *pdev)
 {
-        snd_soc_unregister_platform(&pxa2xx_soc_platform);
+        snd_soc_unregister_platform(&pdev->dev);
+        return 0;
+}
+
+static struct platform_driver pxa_pcm_driver = {
+        .driver = {
+                        .name = "pxa-pcm-audio",
+                        .owner = THIS_MODULE,
+        },
+
+        .probe = pxa2xx_soc_platform_probe,
+        .remove = __devexit_p(pxa2xx_soc_platform_remove),
+};
+
+static int __init snd_pxa_pcm_init(void)
+{
+        return platform_driver_register(&pxa_pcm_driver);
+}
+module_init(snd_pxa_pcm_init);
+
+static void __exit snd_pxa_pcm_exit(void)
+{
+        platform_driver_unregister(&pxa_pcm_driver);
 }
-module_exit(pxa2xx_soc_platform_exit);
+module_exit(snd_pxa_pcm_exit);
 
 MODULE_AUTHOR("Nicolas Pitre");
 MODULE_DESCRIPTION("Intel PXA2xx PCM DMA module");