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, 29 insertions, 103 deletions

diff --git a/sound/soc/codecs/cq93vc.c b/sound/soc/codecs/cq93vc.c
index a320fb5a0e26..823643932dde 100644
--- a/sound/soc/codecs/cq93vc.c
+++ b/sound/soc/codecs/cq93vc.c
@@ -30,6 +30,7 @@
 #include <linux/slab.h>
 #include <linux/clk.h>
 #include <linux/mfd/davinci_voicecodec.h>
+#include <linux/spi/spi.h>
 
 #include <sound/core.h>
 #include <sound/pcm.h>
@@ -41,8 +42,6 @@
 
 #include <mach/dm365.h>
 
-#include "cq93vc.h"
-
 static inline unsigned int cq93vc_read(struct snd_soc_codec *codec,
                                                 unsigned int reg)
 {
@@ -130,8 +129,8 @@ static struct snd_soc_dai_ops cq93vc_dai_ops = {
         .set_sysclk     = cq93vc_set_dai_sysclk,
 };
 
-struct snd_soc_dai cq93vc_dai = {
-        .name = "CQ93VC",
+static struct snd_soc_dai_driver cq93vc_dai = {
+        .name = "cq93vc-hifi",
         .playback = {
                 .stream_name = "Playback",
                 .channels_min = 1,
@@ -146,36 +145,20 @@ struct snd_soc_dai cq93vc_dai = {
                 .formats = CQ93VC_FORMATS,},
         .ops = &cq93vc_dai_ops,
 };
-EXPORT_SYMBOL_GPL(cq93vc_dai);
 
-static int cq93vc_resume(struct platform_device *pdev)
+static int cq93vc_resume(struct snd_soc_codec *codec)
 {
-        struct snd_soc_device *socdev = platform_get_drvdata(pdev);
-        struct snd_soc_codec *codec = socdev->card->codec;
-
         cq93vc_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
 
         return 0;
 }
 
-static struct snd_soc_codec *cq93vc_codec;
-
-static int cq93vc_probe(struct platform_device *pdev)
+static int cq93vc_probe(struct snd_soc_codec *codec)
 {
-        struct snd_soc_device *socdev = platform_get_drvdata(pdev);
-        struct device *dev = &pdev->dev;
-        struct snd_soc_codec *codec;
-        int ret;
-
-        socdev->card->codec = cq93vc_codec;
-        codec = socdev->card->codec;
-
-        /* Register pcms */
-        ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);
-        if (ret < 0) {
-                dev_err(dev, "%s: failed to create pcms\n", pdev->name);
-                return ret;
-        }
+        struct davinci_vc *davinci_vc = codec->dev->platform_data;
+
+        davinci_vc->cq93vc.codec = codec;
+        codec->control_data = davinci_vc;
 
         /* Set controls */
         snd_soc_add_controls(codec, cq93vc_snd_controls,
@@ -187,108 +170,51 @@ static int cq93vc_probe(struct platform_device *pdev)
         return 0;
 }
 
-static int cq93vc_remove(struct platform_device *pdev)
+static int cq93vc_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);
+        cq93vc_set_bias_level(codec, SND_SOC_BIAS_OFF);
 
         return 0;
 }
 
-struct snd_soc_codec_device soc_codec_dev_cq93vc = {
+static struct snd_soc_codec_driver soc_codec_dev_cq93vc = {
+        .read = cq93vc_read,
+        .write = cq93vc_write,
+        .set_bias_level = cq93vc_set_bias_level,
         .probe = cq93vc_probe,
         .remove = cq93vc_remove,
         .resume = cq93vc_resume,
 };
-EXPORT_SYMBOL_GPL(soc_codec_dev_cq93vc);
 
-static __init int cq93vc_codec_probe(struct platform_device *pdev)
+static int cq93vc_platform_probe(struct platform_device *pdev)
 {
-        struct davinci_vc *davinci_vc = platform_get_drvdata(pdev);
-        struct snd_soc_codec *codec;
-        int ret;
-
-        codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL);
-        if (codec == NULL) {
-                dev_dbg(davinci_vc->dev,
-                        "could not allocate memory for codec data\n");
-                return -ENOMEM;
-        }
-
-        davinci_vc->cq93vc.codec = codec;
-
-        cq93vc_dai.dev = &pdev->dev;
-
-        mutex_init(&codec->mutex);
-        INIT_LIST_HEAD(&codec->dapm_widgets);
-        INIT_LIST_HEAD(&codec->dapm_paths);
-        codec->dev = &pdev->dev;
-        codec->name = "CQ93VC";
-        codec->owner = THIS_MODULE;
-        codec->read = cq93vc_read;
-        codec->write = cq93vc_write;
-        codec->set_bias_level = cq93vc_set_bias_level;
-        codec->dai = &cq93vc_dai;
-        codec->num_dai = 1;
-        codec->control_data = davinci_vc;
-
-        cq93vc_codec = codec;
-
-        ret = snd_soc_register_codec(codec);
-        if (ret) {
-                dev_err(davinci_vc->dev, "failed to register codec\n");
-                goto fail1;
-        }
-
-        ret = snd_soc_register_dai(&cq93vc_dai);
-        if (ret) {
-                dev_err(davinci_vc->dev, "could register dai\n");
-                goto fail2;
-        }
-        return 0;
-
-fail2:
-        snd_soc_unregister_codec(codec);
-
-fail1:
-        kfree(codec);
-        cq93vc_codec = NULL;
-
-        return ret;
+        return snd_soc_register_codec(&pdev->dev,
+                        &soc_codec_dev_cq93vc, &cq93vc_dai, 1);
 }
 
-static int __devexit cq93vc_codec_remove(struct platform_device *pdev)
+static int cq93vc_platform_remove(struct platform_device *pdev)
 {
-        struct snd_soc_device *socdev = platform_get_drvdata(pdev);
-        struct snd_soc_codec *codec = socdev->card->codec;
-
-        snd_soc_unregister_dai(&cq93vc_dai);
-        snd_soc_unregister_codec(&codec);
-
-        kfree(codec);
-        cq93vc_codec = NULL;
-
+        snd_soc_unregister_codec(&pdev->dev);
         return 0;
 }
 
 static struct platform_driver cq93vc_codec_driver = {
         .driver = {
-                   .name = "cq93vc",
-                   .owner = THIS_MODULE,
-                   },
-        .probe = cq93vc_codec_probe,
-        .remove = __devexit_p(cq93vc_codec_remove),
+                        .name = "cq93vc-codec",
+                        .owner = THIS_MODULE,
+        },
+
+        .probe = cq93vc_platform_probe,
+        .remove = __devexit_p(cq93vc_platform_remove),
 };
 
-static __init int cq93vc_init(void)
+static int __init cq93vc_init(void)
 {
-        return platform_driver_probe(&cq93vc_codec_driver, cq93vc_codec_probe);
+        return platform_driver_register(&cq93vc_codec_driver);
 }
 module_init(cq93vc_init);
 
-static __exit void cq93vc_exit(void)
+static void __exit cq93vc_exit(void)
 {
         platform_driver_unregister(&cq93vc_codec_driver);
 }