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, 60 insertions, 122 deletions

diff --git a/sound/soc/codecs/tlv320aic23.c b/sound/soc/codecs/tlv320aic23.c
index 0a4b0fef3355..e8652b1ae326 100644
--- a/sound/soc/codecs/tlv320aic23.c
+++ b/sound/soc/codecs/tlv320aic23.c
@@ -240,7 +240,8 @@ static const struct snd_soc_dapm_route intercon[] = {
 
 /* AIC23 driver data */
 struct aic23 {
-        struct snd_soc_codec codec;
+        enum snd_soc_control_type control_type;
+        void *control_data;
         int mclk;
         int requested_adc;
         int requested_dac;
@@ -404,11 +405,10 @@ static int tlv320aic23_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;
         u16 iface_reg;
         int ret;
-        struct aic23 *aic23 = container_of(codec, struct aic23, codec);
+        struct aic23 *aic23 = snd_soc_codec_get_drvdata(codec);
         u32 sample_rate_adc = aic23->requested_adc;
         u32 sample_rate_dac = aic23->requested_dac;
         u32 sample_rate = params_rate(params);
@@ -452,8 +452,7 @@ static int tlv320aic23_pcm_prepare(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;
 
         /* set active */
         tlv320aic23_write(codec, TLV320AIC23_ACTIVE, 0x0001);
@@ -465,9 +464,8 @@ static void tlv320aic23_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 aic23 *aic23 = container_of(codec, struct aic23, codec);
+        struct snd_soc_codec *codec = rtd->codec;
+        struct aic23 *aic23 = snd_soc_codec_get_drvdata(codec);
 
         /* deactivate */
         if (!codec->active) {
@@ -546,8 +544,7 @@ static int tlv320aic23_set_dai_fmt(struct snd_soc_dai *codec_dai,
 static int tlv320aic23_set_dai_sysclk(struct snd_soc_dai *codec_dai,
                                       int clk_id, unsigned int freq, int dir)
 {
-        struct snd_soc_codec *codec = codec_dai->codec;
-        struct aic23 *aic23 = container_of(codec, struct aic23, codec);
+        struct aic23 *aic23 = snd_soc_dai_get_drvdata(codec_dai);
         aic23->mclk = freq;
         return 0;
 }
@@ -594,8 +591,8 @@ static struct snd_soc_dai_ops tlv320aic23_dai_ops = {
         .set_sysclk     = tlv320aic23_set_dai_sysclk,
 };
 
-struct snd_soc_dai tlv320aic23_dai = {
-        .name = "tlv320aic23",
+static struct snd_soc_dai_driver tlv320aic23_dai = {
+        .name = "tlv320aic23-hifi",
         .playback = {
                      .stream_name = "Playback",
                      .channels_min = 2,
@@ -610,23 +607,17 @@ struct snd_soc_dai tlv320aic23_dai = {
                     .formats = AIC23_FORMATS,},
         .ops = &tlv320aic23_dai_ops,
 };
-EXPORT_SYMBOL_GPL(tlv320aic23_dai);
 
-static int tlv320aic23_suspend(struct platform_device *pdev,
+static int tlv320aic23_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;
-
         tlv320aic23_set_bias_level(codec, SND_SOC_BIAS_OFF);
 
         return 0;
 }
 
-static int tlv320aic23_resume(struct platform_device *pdev)
+static int tlv320aic23_resume(struct snd_soc_codec *codec)
 {
-        struct snd_soc_device *socdev = platform_get_drvdata(pdev);
-        struct snd_soc_codec *codec = socdev->card->codec;
         u16 reg;
 
         /* Sync reg_cache with the hardware */
@@ -639,39 +630,19 @@ static int tlv320aic23_resume(struct platform_device *pdev)
         return 0;
 }
 
-/*
- * initialise the AIC23 driver
- * register the mixer and dsp interfaces with the kernel
- */
-static int tlv320aic23_init(struct snd_soc_device *socdev)
+static int tlv320aic23_probe(struct snd_soc_codec *codec)
 {
-        struct snd_soc_codec *codec = socdev->card->codec;
-        int ret = 0;
-        u16 reg;
+        struct aic23 *aic23 = snd_soc_codec_get_drvdata(codec);
+        int reg;
 
-        codec->name = "tlv320aic23";
-        codec->owner = THIS_MODULE;
-        codec->read = tlv320aic23_read_reg_cache;
-        codec->write = tlv320aic23_write;
-        codec->set_bias_level = tlv320aic23_set_bias_level;
-        codec->dai = &tlv320aic23_dai;
-        codec->num_dai = 1;
-        codec->reg_cache_size = ARRAY_SIZE(tlv320aic23_reg);
-        codec->reg_cache =
-            kmemdup(tlv320aic23_reg, sizeof(tlv320aic23_reg), GFP_KERNEL);
-        if (codec->reg_cache == NULL)
-                return -ENOMEM;
+        printk(KERN_INFO "AIC23 Audio Codec %s\n", AIC23_VERSION);
+        codec->control_data = aic23->control_data;
+        codec->hw_write = (hw_write_t)i2c_master_send;
+        codec->hw_read = NULL;
 
         /* Reset codec */
         tlv320aic23_write(codec, TLV320AIC23_RESET, 0);
 
-        /* register pcms */
-        ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);
-        if (ret < 0) {
-                printk(KERN_ERR "tlv320aic23: failed to create pcms\n");
-                goto pcm_err;
-        }
-
         /* power on device */
         tlv320aic23_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
 
@@ -707,13 +678,27 @@ static int tlv320aic23_init(struct snd_soc_device *socdev)
                                 ARRAY_SIZE(tlv320aic23_snd_controls));
         tlv320aic23_add_widgets(codec);
 
-        return ret;
+        return 0;
+}
 
-pcm_err:
-        kfree(codec->reg_cache);
-        return ret;
+static int tlv320aic23_remove(struct snd_soc_codec *codec)
+{
+        tlv320aic23_set_bias_level(codec, SND_SOC_BIAS_OFF);
+        return 0;
 }
-static struct snd_soc_device *tlv320aic23_socdev;
+
+static struct snd_soc_codec_driver soc_codec_dev_tlv320aic23 = {
+        .reg_cache_size = ARRAY_SIZE(tlv320aic23_reg),
+        .reg_word_size = sizeof(u16),
+        .reg_cache_default = tlv320aic23_reg,
+        .probe = tlv320aic23_probe,
+        .remove = tlv320aic23_remove,
+        .suspend = tlv320aic23_suspend,
+        .resume = tlv320aic23_resume,
+        .read = tlv320aic23_read_reg_cache,
+        .write = tlv320aic23_write,
+        .set_bias_level = tlv320aic23_set_bias_level,
+};
 
 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
 /*
@@ -723,31 +708,30 @@ static struct snd_soc_device *tlv320aic23_socdev;
 static int tlv320aic23_codec_probe(struct i2c_client *i2c,
                                    const struct i2c_device_id *i2c_id)
 {
-        struct snd_soc_device *socdev = tlv320aic23_socdev;
-        struct snd_soc_codec *codec = socdev->card->codec;
+        struct aic23 *aic23;
         int ret;
 
         if (!i2c_check_functionality(i2c->adapter, I2C_FUNC_SMBUS_BYTE_DATA))
                 return -EINVAL;
 
-        i2c_set_clientdata(i2c, codec);
-        codec->control_data = i2c;
+        aic23 = kzalloc(sizeof(struct aic23), GFP_KERNEL);
+        if (aic23 == NULL)
+                return -ENOMEM;
 
-        ret = tlv320aic23_init(socdev);
-        if (ret < 0) {
-                printk(KERN_ERR "tlv320aic23: failed to initialise AIC23\n");
-                goto err;
-        }
-        return ret;
+        i2c_set_clientdata(i2c, aic23);
+        aic23->control_data = i2c;
+        aic23->control_type = SND_SOC_I2C;
 
-err:
-        kfree(codec);
-        kfree(i2c);
+        ret =  snd_soc_register_codec(&i2c->dev,
+                        &soc_codec_dev_tlv320aic23, &tlv320aic23_dai, 1);
+        if (ret < 0)
+                kfree(aic23);
         return ret;
 }
 static int __exit tlv320aic23_i2c_remove(struct i2c_client *i2c)
 {
-        put_device(&i2c->dev);
+        snd_soc_unregister_codec(&i2c->dev);
+        kfree(i2c_get_clientdata(i2c));
         return 0;
 }
 
@@ -760,7 +744,7 @@ MODULE_DEVICE_TABLE(i2c, tlv320aic23_id);
 
 static struct i2c_driver tlv320aic23_i2c_driver = {
         .driver = {
-                   .name = "tlv320aic23",
+                   .name = "tlv320aic23-codec",
                    },
         .probe = tlv320aic23_codec_probe,
         .remove = __exit_p(tlv320aic23_i2c_remove),
@@ -769,71 +753,25 @@ static struct i2c_driver tlv320aic23_i2c_driver = {
 
 #endif
 
-static int tlv320aic23_probe(struct platform_device *pdev)
+static int __init tlv320aic23_modinit(void)
 {
-        struct snd_soc_device *socdev = platform_get_drvdata(pdev);
-        struct snd_soc_codec *codec;
-        struct aic23 *aic23;
-        int ret = 0;
-
-        printk(KERN_INFO "AIC23 Audio Codec %s\n", AIC23_VERSION);
-
-        aic23 = kzalloc(sizeof(struct aic23), GFP_KERNEL);
-        if (aic23 == NULL)
-                return -ENOMEM;
-        codec = &aic23->codec;
-        socdev->card->codec = codec;
-        mutex_init(&codec->mutex);
-        INIT_LIST_HEAD(&codec->dapm_widgets);
-        INIT_LIST_HEAD(&codec->dapm_paths);
-
-        tlv320aic23_socdev = socdev;
+        int ret;
 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
-        codec->hw_write = (hw_write_t) i2c_master_send;
-        codec->hw_read = NULL;
         ret = i2c_add_driver(&tlv320aic23_i2c_driver);
-        if (ret != 0)
-                printk(KERN_ERR "can't add i2c driver");
+        if (ret != 0) {
+                printk(KERN_ERR "Failed to register TLV320AIC23 I2C driver: %d\n",
+                       ret);
+        }
 #endif
         return ret;
 }
+module_init(tlv320aic23_modinit);
 
-static int tlv320aic23_remove(struct platform_device *pdev)
+static void __exit tlv320aic23_exit(void)
 {
-        struct snd_soc_device *socdev = platform_get_drvdata(pdev);
-        struct snd_soc_codec *codec = socdev->card->codec;
-        struct aic23 *aic23 = container_of(codec, struct aic23, codec);
-
-        if (codec->control_data)
-                tlv320aic23_set_bias_level(codec, SND_SOC_BIAS_OFF);
-
-        snd_soc_free_pcms(socdev);
-        snd_soc_dapm_free(socdev);
 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
         i2c_del_driver(&tlv320aic23_i2c_driver);
 #endif
-        kfree(codec->reg_cache);
-        kfree(aic23);
-
-        return 0;
-}
-struct snd_soc_codec_device soc_codec_dev_tlv320aic23 = {
-        .probe = tlv320aic23_probe,
-        .remove = tlv320aic23_remove,
-        .suspend = tlv320aic23_suspend,
-        .resume = tlv320aic23_resume,
-};
-EXPORT_SYMBOL_GPL(soc_codec_dev_tlv320aic23);
-
-static int __init tlv320aic23_modinit(void)
-{
-        return snd_soc_register_dai(&tlv320aic23_dai);
-}
-module_init(tlv320aic23_modinit);
-
-static void __exit tlv320aic23_exit(void)
-{
-        snd_soc_unregister_dai(&tlv320aic23_dai);
 }
 module_exit(tlv320aic23_exit);