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, 71 insertions, 152 deletions

diff --git a/sound/soc/codecs/tlv320aic3x.c b/sound/soc/codecs/tlv320aic3x.c
index 71a69908ccf6..43fd9c171742 100644
--- a/sound/soc/codecs/tlv320aic3x.c
+++ b/sound/soc/codecs/tlv320aic3x.c
@@ -63,8 +63,10 @@ static const char *aic3x_supply_names[AIC3X_NUM_SUPPLIES] = {
 
 /* codec private data */
 struct aic3x_priv {
-        struct snd_soc_codec codec;
         struct regulator_bulk_data supplies[AIC3X_NUM_SUPPLIES];
+        enum snd_soc_control_type control_type;
+        struct aic3x_setup_data *setup;
+        void *control_data;
         unsigned int sysclk;
         int master;
         int gpio_reset;
@@ -773,8 +775,7 @@ static int aic3x_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;
         struct aic3x_priv *aic3x = snd_soc_codec_get_drvdata(codec);
         int codec_clk = 0, bypass_pll = 0, fsref, last_clk = 0;
         u8 data, j, r, p, pll_q, pll_p = 1, pll_r = 1, pll_j = 1;
@@ -1101,8 +1102,8 @@ static struct snd_soc_dai_ops aic3x_dai_ops = {
         .set_fmt        = aic3x_set_dai_fmt,
 };
 
-struct snd_soc_dai aic3x_dai = {
-        .name = "tlv320aic3x",
+static struct snd_soc_dai_driver aic3x_dai = {
+        .name = "tlv320aic3x-hifi",
         .playback = {
                 .stream_name = "Playback",
                 .channels_min = 1,
@@ -1117,22 +1118,16 @@ struct snd_soc_dai aic3x_dai = {
                 .formats = AIC3X_FORMATS,},
         .ops = &aic3x_dai_ops,
 };
-EXPORT_SYMBOL_GPL(aic3x_dai);
 
-static int aic3x_suspend(struct platform_device *pdev, pm_message_t state)
+static int aic3x_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;
-
         aic3x_set_bias_level(codec, SND_SOC_BIAS_OFF);
 
         return 0;
 }
 
-static int aic3x_resume(struct platform_device *pdev)
+static int aic3x_resume(struct snd_soc_codec *codec)
 {
-        struct snd_soc_device *socdev = platform_get_drvdata(pdev);
-        struct snd_soc_codec *codec = socdev->card->codec;
         int i;
         u8 data[2];
         u8 *cache = codec->reg_cache;
@@ -1157,22 +1152,6 @@ static int aic3x_init(struct snd_soc_codec *codec)
 {
         int reg;
 
-        mutex_init(&codec->mutex);
-        INIT_LIST_HEAD(&codec->dapm_widgets);
-        INIT_LIST_HEAD(&codec->dapm_paths);
-
-        codec->name = "tlv320aic3x";
-        codec->owner = THIS_MODULE;
-        codec->read = aic3x_read_reg_cache;
-        codec->write = aic3x_write;
-        codec->set_bias_level = aic3x_set_bias_level;
-        codec->dai = &aic3x_dai;
-        codec->num_dai = 1;
-        codec->reg_cache_size = ARRAY_SIZE(aic3x_reg);
-        codec->reg_cache = kmemdup(aic3x_reg, sizeof(aic3x_reg), GFP_KERNEL);
-        if (codec->reg_cache == NULL)
-                return -ENOMEM;
-
         aic3x_write(codec, AIC3X_PAGE_SELECT, PAGE0_SELECT);
         aic3x_write(codec, AIC3X_RESET, SOFT_RESET);
 
@@ -1245,56 +1224,50 @@ static int aic3x_init(struct snd_soc_codec *codec)
         return 0;
 }
 
-static struct snd_soc_codec *aic3x_codec;
-
-static int aic3x_register(struct snd_soc_codec *codec)
+static int aic3x_probe(struct snd_soc_codec *codec)
 {
-        int ret;
+        struct aic3x_priv *aic3x = snd_soc_codec_get_drvdata(codec);
+
+        codec->hw_write = (hw_write_t) i2c_master_send;
+        codec->control_data = aic3x->control_data;
 
-        ret = aic3x_init(codec);
-        if (ret < 0) {
-                dev_err(codec->dev, "Failed to initialise device\n");
-                return ret;
+        if (aic3x->setup) {
+                /* setup GPIO functions */
+                aic3x_write(codec, AIC3X_GPIO1_REG,
+                            (aic3x->setup->gpio_func[0] & 0xf) << 4);
+                aic3x_write(codec, AIC3X_GPIO2_REG,
+                            (aic3x->setup->gpio_func[1] & 0xf) << 4);
         }
 
-        aic3x_codec = codec;
+        aic3x_init(codec);
 
-        ret = snd_soc_register_codec(codec);
-        if (ret) {
-                dev_err(codec->dev, "Failed to register codec\n");
-                return ret;
-        }
+        snd_soc_add_controls(codec, aic3x_snd_controls,
+                             ARRAY_SIZE(aic3x_snd_controls));
 
-        ret = snd_soc_register_dai(&aic3x_dai);
-        if (ret) {
-                dev_err(codec->dev, "Failed to register dai\n");
-                snd_soc_unregister_codec(codec);
-                return ret;
-        }
+        aic3x_add_widgets(codec);
 
         return 0;
 }
 
-static int aic3x_unregister(struct aic3x_priv *aic3x)
+static int aic3x_remove(struct snd_soc_codec *codec)
 {
-        aic3x_set_bias_level(&aic3x->codec, SND_SOC_BIAS_OFF);
-
-        snd_soc_unregister_dai(&aic3x_dai);
-        snd_soc_unregister_codec(&aic3x->codec);
-
-        if (aic3x->gpio_reset >= 0) {
-                gpio_set_value(aic3x->gpio_reset, 0);
-                gpio_free(aic3x->gpio_reset);
-        }
-        regulator_bulk_disable(ARRAY_SIZE(aic3x->supplies), aic3x->supplies);
-        regulator_bulk_free(ARRAY_SIZE(aic3x->supplies), aic3x->supplies);
-
-        kfree(aic3x);
-        aic3x_codec = NULL;
-
+        aic3x_set_bias_level(codec, SND_SOC_BIAS_OFF);
         return 0;
 }
 
+static struct snd_soc_codec_driver soc_codec_dev_aic3x = {
+        .read = aic3x_read_reg_cache,
+        .write = aic3x_write,
+        .set_bias_level = aic3x_set_bias_level,
+        .reg_cache_size = ARRAY_SIZE(aic3x_reg),
+        .reg_word_size = sizeof(u8),
+        .reg_cache_default = aic3x_reg,
+        .probe = aic3x_probe,
+        .remove = aic3x_remove,
+        .suspend = aic3x_suspend,
+        .resume = aic3x_resume,
+};
+
 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
 /*
  * AIC3X 2 wire address can be up to 4 devices with device addresses
@@ -1308,9 +1281,9 @@ static int aic3x_unregister(struct aic3x_priv *aic3x)
 static int aic3x_i2c_probe(struct i2c_client *i2c,
                            const struct i2c_device_id *id)
 {
-        struct snd_soc_codec *codec;
-        struct aic3x_priv *aic3x;
         struct aic3x_pdata *pdata = i2c->dev.platform_data;
+        struct aic3x_setup_data *setup = pdata->setup;
+        struct aic3x_priv *aic3x;
         int ret, i;
 
         aic3x = kzalloc(sizeof(struct aic3x_priv), GFP_KERNEL);
@@ -1319,12 +1292,8 @@ static int aic3x_i2c_probe(struct i2c_client *i2c,
                 return -ENOMEM;
         }
 
-        codec = &aic3x->codec;
-        codec->dev = &i2c->dev;
-        snd_soc_codec_set_drvdata(codec, aic3x);
-        codec->control_data = i2c;
-        codec->hw_write = (hw_write_t) i2c_master_send;
-
+        aic3x->control_data = i2c;
+        aic3x->setup = setup;
         i2c_set_clientdata(i2c, aic3x);
 
         aic3x->gpio_reset = -1;
@@ -1339,17 +1308,17 @@ static int aic3x_i2c_probe(struct i2c_client *i2c,
         for (i = 0; i < ARRAY_SIZE(aic3x->supplies); i++)
                 aic3x->supplies[i].supply = aic3x_supply_names[i];
 
-        ret = regulator_bulk_get(codec->dev, ARRAY_SIZE(aic3x->supplies),
+        ret = regulator_bulk_get(&i2c->dev, ARRAY_SIZE(aic3x->supplies),
                                  aic3x->supplies);
         if (ret != 0) {
-                dev_err(codec->dev, "Failed to request supplies: %d\n", ret);
+                dev_err(&i2c->dev, "Failed to request supplies: %d\n", ret);
                 goto err_get;
         }
 
         ret = regulator_bulk_enable(ARRAY_SIZE(aic3x->supplies),
                                     aic3x->supplies);
         if (ret != 0) {
-                dev_err(codec->dev, "Failed to enable supplies: %d\n", ret);
+                dev_err(&i2c->dev, "Failed to enable supplies: %d\n", ret);
                 goto err_enable;
         }
 
@@ -1358,7 +1327,11 @@ static int aic3x_i2c_probe(struct i2c_client *i2c,
                 gpio_set_value(aic3x->gpio_reset, 1);
         }
 
-        return aic3x_register(codec);
+        ret = snd_soc_register_codec(&i2c->dev,
+                        &soc_codec_dev_aic3x, &aic3x_dai, 1);
+        if (ret < 0)
+                goto err_enable;
+        return ret;
 
 err_enable:
         regulator_bulk_free(ARRAY_SIZE(aic3x->supplies), aic3x->supplies);
@@ -1374,7 +1347,16 @@ static int aic3x_i2c_remove(struct i2c_client *client)
 {
         struct aic3x_priv *aic3x = i2c_get_clientdata(client);
 
-        return aic3x_unregister(aic3x);
+        if (aic3x->gpio_reset >= 0) {
+                gpio_set_value(aic3x->gpio_reset, 0);
+                gpio_free(aic3x->gpio_reset);
+        }
+        regulator_bulk_disable(ARRAY_SIZE(aic3x->supplies), aic3x->supplies);
+        regulator_bulk_free(ARRAY_SIZE(aic3x->supplies), aic3x->supplies);
+
+        snd_soc_unregister_codec(&client->dev);
+        kfree(i2c_get_clientdata(client));
+        return 0;
 }
 
 static const struct i2c_device_id aic3x_i2c_id[] = {
@@ -1387,7 +1369,7 @@ MODULE_DEVICE_TABLE(i2c, aic3x_i2c_id);
 /* machine i2c codec control layer */
 static struct i2c_driver aic3x_i2c_driver = {
         .driver = {
-                .name = "aic3x I2C Codec",
+                .name = "tlv320aic3x-codec",
                 .owner = THIS_MODULE,
         },
         .probe  = aic3x_i2c_probe,
@@ -1409,90 +1391,27 @@ static inline void aic3x_i2c_exit(void)
 {
         i2c_del_driver(&aic3x_i2c_driver);
 }
-#else
-static inline void aic3x_i2c_init(void) { }
-static inline void aic3x_i2c_exit(void) { }
 #endif
 
-static int aic3x_probe(struct platform_device *pdev)
+static int __init aic3x_modinit(void)
 {
-        struct snd_soc_device *socdev = platform_get_drvdata(pdev);
-        struct aic3x_setup_data *setup;
-        struct snd_soc_codec *codec;
         int ret = 0;
-
-        codec = aic3x_codec;
-        if (!codec) {
-                dev_err(&pdev->dev, "Codec not registered\n");
-                return -ENODEV;
-        }
-
-        socdev->card->codec = codec;
-        setup = socdev->codec_data;
-
-        if (setup) {
-                /* setup GPIO functions */
-                aic3x_write(codec, AIC3X_GPIO1_REG,
-                            (setup->gpio_func[0] & 0xf) << 4);
-                aic3x_write(codec, AIC3X_GPIO2_REG,
-                            (setup->gpio_func[1] & 0xf) << 4);
-        }
-
-        /* register pcms */
-        ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);
-        if (ret < 0) {
-                printk(KERN_ERR "aic3x: failed to create pcms\n");
-                goto pcm_err;
+#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
+        ret = i2c_add_driver(&aic3x_i2c_driver);
+        if (ret != 0) {
+                printk(KERN_ERR "Failed to register TLV320AIC3x I2C driver: %d\n",
+                       ret);
         }
-
-        snd_soc_add_controls(codec, aic3x_snd_controls,
-                             ARRAY_SIZE(aic3x_snd_controls));
-
-        aic3x_add_widgets(codec);
-
-        return ret;
-
-pcm_err:
-        kfree(codec->reg_cache);
+#endif
         return ret;
 }
-
-static int aic3x_remove(struct platform_device *pdev)
-{
-        struct snd_soc_device *socdev = platform_get_drvdata(pdev);
-        struct snd_soc_codec *codec = socdev->card->codec;
-
-        /* power down chip */
-        if (codec->control_data)
-                aic3x_set_bias_level(codec, SND_SOC_BIAS_OFF);
-
-        snd_soc_free_pcms(socdev);
-        snd_soc_dapm_free(socdev);
-
-        kfree(codec->reg_cache);
-
-        return 0;
-}
-
-struct snd_soc_codec_device soc_codec_dev_aic3x = {
-        .probe = aic3x_probe,
-        .remove = aic3x_remove,
-        .suspend = aic3x_suspend,
-        .resume = aic3x_resume,
-};
-EXPORT_SYMBOL_GPL(soc_codec_dev_aic3x);
-
-static int __init aic3x_modinit(void)
-{
-        aic3x_i2c_init();
-
-        return 0;
-}
 module_init(aic3x_modinit);
 
 static void __exit aic3x_exit(void)
 {
-        aic3x_i2c_exit();
+#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
+        i2c_del_driver(&aic3x_i2c_driver);
+#endif
 }
 module_exit(aic3x_exit);