ASoC: WM8750: Convert to new API

Register the WM8750 as a SPI or I2C device. This patch mostly shuffles code
around. Hugely inspired by WM8753 which was already converted.

Also, this patch fixes the Jive and Spitz machine.

Signed-off-by: Marek Vasut <marek.vasut@gmail.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

3 files changed, 175 insertions, 168 deletions

diff --git a/sound/soc/codecs/wm8750.c b/sound/soc/codecs/wm8750.c
index ee084083a49d..4bbc512c0836 100644
--- a/sound/soc/codecs/wm8750.c
+++ b/sound/soc/codecs/wm8750.c
@@ -29,11 +29,6 @@
 
 #include "wm8750.h"
 
-/* codec private data */
-struct wm8750_priv {
-        unsigned int sysclk;
-};
-
 /*
  * wm8750 register cache
  * We can't read the WM8750 register space when we
@@ -53,6 +48,13 @@ static const u16 wm8750_reg[] = {
         0x0079, 0x0079, 0x0079,          /* 40 */
 };
 
+/* codec private data */
+struct wm8750_priv {
+        unsigned int sysclk;
+        struct snd_soc_codec codec;
+        u16 reg_cache[ARRAY_SIZE(wm8750_reg)];
+};
+
 #define wm8750_reset(c) snd_soc_write(c, WM8750_RESET, 0)
 
 /*
@@ -695,25 +697,90 @@ static int wm8750_resume(struct platform_device *pdev)
         return 0;
 }
 
+static struct snd_soc_codec *wm8750_codec;
+
+static int wm8750_probe(struct platform_device *pdev)
+{
+        struct snd_soc_device *socdev = platform_get_drvdata(pdev);
+        struct snd_soc_codec *codec;
+        int ret = 0;
+
+        if (!wm8750_codec) {
+                dev_err(&pdev->dev, "WM8750 codec not yet registered\n");
+                return -EINVAL;
+        }
+
+        socdev->card->codec = wm8750_codec;
+        codec = wm8750_codec;
+
+        /* register pcms */
+        ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);
+        if (ret < 0) {
+                printk(KERN_ERR "wm8750: failed to create pcms\n");
+                goto err;
+        }
+
+        snd_soc_add_controls(codec, wm8750_snd_controls,
+                                ARRAY_SIZE(wm8750_snd_controls));
+        wm8750_add_widgets(codec);
+
+        return 0;
+
+err:
+        return ret;
+}
+
+/* power down chip */
+static int wm8750_remove(struct platform_device *pdev)
+{
+        struct snd_soc_device *socdev = platform_get_drvdata(pdev);
+
+        snd_soc_free_pcms(socdev);
+        snd_soc_dapm_free(socdev);
+
+        return 0;
+}
+
+struct snd_soc_codec_device soc_codec_dev_wm8750 = {
+        .probe          = wm8750_probe,
+        .remove         = wm8750_remove,
+        .suspend        = wm8750_suspend,
+        .resume         = wm8750_resume,
+};
+EXPORT_SYMBOL_GPL(soc_codec_dev_wm8750);
+
 /*
  * initialise the WM8750 driver
  * register the mixer and dsp interfaces with the kernel
  */
-static int wm8750_init(struct snd_soc_device *socdev,
-                       enum snd_soc_control_type control)
+static int wm8750_register(struct wm8750_priv *wm8750,
+                        enum snd_soc_control_type control)
 {
-        struct snd_soc_codec *codec = socdev->card->codec;
+        struct snd_soc_codec *codec = &wm8750->codec;
         int reg, ret = 0;
 
+        if (wm8750_codec) {
+                dev_err(codec->dev, "Multiple WM8750 devices not supported\n");
+                ret = -EINVAL;
+                goto err;
+        }
+
+        mutex_init(&codec->mutex);
+        INIT_LIST_HEAD(&codec->dapm_widgets);
+        INIT_LIST_HEAD(&codec->dapm_paths);
+
         codec->name = "WM8750";
         codec->owner = THIS_MODULE;
+        codec->bias_level = SND_SOC_BIAS_STANDBY;
         codec->set_bias_level = wm8750_set_bias_level;
         codec->dai = &wm8750_dai;
         codec->num_dai = 1;
-        codec->reg_cache_size = ARRAY_SIZE(wm8750_reg);
-        codec->reg_cache = kmemdup(wm8750_reg, sizeof(wm8750_reg), GFP_KERNEL);
-        if (codec->reg_cache == NULL)
-                return -ENOMEM;
+        codec->private_data = wm8750;
+        codec->reg_cache_size = ARRAY_SIZE(wm8750->reg_cache) + 1;
+        codec->reg_cache = &wm8750->reg_cache;
+        codec->private_data = wm8750;
+
+        memcpy(codec->reg_cache, wm8750_reg, sizeof(wm8750->reg_cache));
 
         ret = snd_soc_codec_set_cache_io(codec, 7, 9, control);
         if (ret < 0) {
@@ -727,13 +794,6 @@ static int wm8750_init(struct snd_soc_device *socdev,
                 goto err;
         }
 
-        /* register pcms */
-        ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);
-        if (ret < 0) {
-                printk(KERN_ERR "wm8750: failed to create pcms\n");
-                goto err;
-        }
-
         /* charge output caps */
         wm8750_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
 
@@ -755,19 +815,37 @@ static int wm8750_init(struct snd_soc_device *socdev,
         reg = snd_soc_read(codec, WM8750_RINVOL);
         snd_soc_write(codec, WM8750_RINVOL, reg | 0x0100);
 
-        snd_soc_add_controls(codec, wm8750_snd_controls,
-                                ARRAY_SIZE(wm8750_snd_controls));
-        wm8750_add_widgets(codec);
-        return ret;
+        wm8750_codec = codec;
 
+        ret = snd_soc_register_codec(codec);
+        if (ret != 0) {
+                dev_err(codec->dev, "Failed to register codec: %d\n", ret);
+                goto err;
+        }
+
+        ret = snd_soc_register_dais(&wm8750_dai, 1);
+        if (ret != 0) {
+                dev_err(codec->dev, "Failed to register DAIs: %d\n", ret);
+                goto err_codec;
+        }
+
+        return 0;
+
+err_codec:
+        snd_soc_unregister_codec(codec);
 err:
-        kfree(codec->reg_cache);
+        kfree(wm8750);
         return ret;
 }
 
-/* If the i2c layer weren't so broken, we could pass this kind of data
-   around */
-static struct snd_soc_device *wm8750_socdev;
+static void wm8750_unregister(struct wm8750_priv *wm8750)
+{
+        wm8750_set_bias_level(&wm8750->codec, SND_SOC_BIAS_OFF);
+        snd_soc_unregister_dais(&wm8750_dai, 1);
+        snd_soc_unregister_codec(&wm8750->codec);
+        kfree(wm8750);
+        wm8750_codec = NULL;
+}
 
 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
 
@@ -781,24 +859,26 @@ static struct snd_soc_device *wm8750_socdev;
 static int wm8750_i2c_probe(struct i2c_client *i2c,
                             const struct i2c_device_id *id)
 {
-        struct snd_soc_device *socdev = wm8750_socdev;
-        struct snd_soc_codec *codec = socdev->card->codec;
-        int ret;
+        struct snd_soc_codec *codec;
+        struct wm8750_priv *wm8750;
 
-        i2c_set_clientdata(i2c, codec);
+        wm8750 = kzalloc(sizeof(struct wm8750_priv), GFP_KERNEL);
+        if (wm8750 == NULL)
+                return -ENOMEM;
+
+        codec = &wm8750->codec;
         codec->control_data = i2c;
+        i2c_set_clientdata(i2c, wm8750);
 
-        ret = wm8750_init(socdev, SND_SOC_I2C);
-        if (ret < 0)
-                pr_err("failed to initialise WM8750\n");
+        codec->dev = &i2c->dev;
 
-        return ret;
+        return wm8750_register(wm8750, SND_SOC_I2C);
 }
 
 static int wm8750_i2c_remove(struct i2c_client *client)
 {
-        struct snd_soc_codec *codec = i2c_get_clientdata(client);
-        kfree(codec->reg_cache);
+        struct wm8750_priv *wm8750 = i2c_get_clientdata(client);
+        wm8750_unregister(wm8750);
         return 0;
 }
 
@@ -817,66 +897,31 @@ static struct i2c_driver wm8750_i2c_driver = {
         .remove =   wm8750_i2c_remove,
         .id_table = wm8750_i2c_id,
 };
-
-static int wm8750_add_i2c_device(struct platform_device *pdev,
-                                 const struct wm8750_setup_data *setup)
-{
-        struct i2c_board_info info;
-        struct i2c_adapter *adapter;
-        struct i2c_client *client;
-        int ret;
-
-        ret = i2c_add_driver(&wm8750_i2c_driver);
-        if (ret != 0) {
-                dev_err(&pdev->dev, "can't add i2c driver\n");
-                return ret;
-        }
-
-        memset(&info, 0, sizeof(struct i2c_board_info));
-        info.addr = setup->i2c_address;
-        strlcpy(info.type, "wm8750", I2C_NAME_SIZE);
-
-        adapter = i2c_get_adapter(setup->i2c_bus);
-        if (!adapter) {
-                dev_err(&pdev->dev, "can't get i2c adapter %d\n",
-                        setup->i2c_bus);
-                goto err_driver;
-        }
-
-        client = i2c_new_device(adapter, &info);
-        i2c_put_adapter(adapter);
-        if (!client) {
-                dev_err(&pdev->dev, "can't add i2c device at 0x%x\n",
-                        (unsigned int)info.addr);
-                goto err_driver;
-        }
-
-        return 0;
-
-err_driver:
-        i2c_del_driver(&wm8750_i2c_driver);
-        return -ENODEV;
-}
 #endif
 
 #if defined(CONFIG_SPI_MASTER)
 static int __devinit wm8750_spi_probe(struct spi_device *spi)
 {
-        struct snd_soc_device *socdev = wm8750_socdev;
-        struct snd_soc_codec *codec = socdev->card->codec;
-        int ret;
+        struct snd_soc_codec *codec;
+        struct wm8750_priv *wm8750;
 
+        wm8750 = kzalloc(sizeof(struct wm8750_priv), GFP_KERNEL);
+        if (wm8750 == NULL)
+                return -ENOMEM;
+
+        codec = &wm8750->codec;
         codec->control_data = spi;
+        codec->dev = &spi->dev;
 
-        ret = wm8750_init(socdev, SND_SOC_SPI);
-        if (ret < 0)
-                dev_err(&spi->dev, "failed to initialise WM8750\n");
+        dev_set_drvdata(&spi->dev, wm8750);
 
-        return ret;
+        return wm8750_register(wm8750, SND_SOC_SPI);
 }
 
 static int __devexit wm8750_spi_remove(struct spi_device *spi)
 {
+        struct wm8750_priv *wm8750 = dev_get_drvdata(&spi->dev);
+        wm8750_unregister(wm8750);
         return 0;
 }
 
@@ -891,93 +936,31 @@ static struct spi_driver wm8750_spi_driver = {
 };
 #endif
 
-static int wm8750_probe(struct platform_device *pdev)
+static int __init wm8750_modinit(void)
 {
-        struct snd_soc_device *socdev = platform_get_drvdata(pdev);
-        struct wm8750_setup_data *setup = socdev->codec_data;
-        struct snd_soc_codec *codec;
-        struct wm8750_priv *wm8750;
         int ret;
-
-        codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL);
-        if (codec == NULL)
-                return -ENOMEM;
-
-        wm8750 = kzalloc(sizeof(struct wm8750_priv), GFP_KERNEL);
-        if (wm8750 == NULL) {
-                kfree(codec);
-                return -ENOMEM;
-        }
-
-        codec->private_data = wm8750;
-        socdev->card->codec = codec;
-        mutex_init(&codec->mutex);
-        INIT_LIST_HEAD(&codec->dapm_widgets);
-        INIT_LIST_HEAD(&codec->dapm_paths);
-        wm8750_socdev = socdev;
-
-        ret = -ENODEV;
-
 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
-        if (setup->i2c_address) {
-                ret = wm8750_add_i2c_device(pdev, setup);
-        }
+        ret = i2c_add_driver(&wm8750_i2c_driver);
+        if (ret != 0)
+                pr_err("Failed to register WM8750 I2C driver: %d\n", ret);
 #endif
 #if defined(CONFIG_SPI_MASTER)
-        if (setup->spi) {
-                ret = spi_register_driver(&wm8750_spi_driver);
-                if (ret != 0)
-                        printk(KERN_ERR "can't add spi driver");
-        }
+        ret = spi_register_driver(&wm8750_spi_driver);
+        if (ret != 0)
+                pr_err("Failed to register WM8750 SPI driver: %d\n", ret);
 #endif
-
-        if (ret != 0) {
-                kfree(codec->private_data);
-                kfree(codec);
-        }
-        return ret;
+        return 0;
 }
+module_init(wm8750_modinit);
 
-/* power down chip */
-static int wm8750_remove(struct platform_device *pdev)
+static void __exit wm8750_exit(void)
 {
-        struct snd_soc_device *socdev = platform_get_drvdata(pdev);
-        struct snd_soc_codec *codec = socdev->card->codec;
-
-        if (codec->control_data)
-                wm8750_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_unregister_device(codec->control_data);
         i2c_del_driver(&wm8750_i2c_driver);
 #endif
 #if defined(CONFIG_SPI_MASTER)
         spi_unregister_driver(&wm8750_spi_driver);
 #endif
-        kfree(codec->private_data);
-        kfree(codec);
-
-        return 0;
-}
-
-struct snd_soc_codec_device soc_codec_dev_wm8750 = {
-        .probe =        wm8750_probe,
-        .remove =       wm8750_remove,
-        .suspend =      wm8750_suspend,
-        .resume =       wm8750_resume,
-};
-EXPORT_SYMBOL_GPL(soc_codec_dev_wm8750);
-
-static int __init wm8750_modinit(void)
-{
-        return snd_soc_register_dai(&wm8750_dai);
-}
-module_init(wm8750_modinit);
-
-static void __exit wm8750_exit(void)
-{
-        snd_soc_unregister_dai(&wm8750_dai);
 }
 module_exit(wm8750_exit);
 
diff --git a/sound/soc/pxa/spitz.c b/sound/soc/pxa/spitz.c
index c4cd2acaacb4..1941a357e8c4 100644
--- a/sound/soc/pxa/spitz.c
+++ b/sound/soc/pxa/spitz.c
@@ -322,19 +322,44 @@ static struct snd_soc_card snd_soc_spitz = {
         .num_links = 1,
 };
 
-/* spitz audio private data */
-static struct wm8750_setup_data spitz_wm8750_setup = {
-        .i2c_bus = 0,
-        .i2c_address = 0x1b,
-};
-
 /* spitz audio subsystem */
 static struct snd_soc_device spitz_snd_devdata = {
         .card = &snd_soc_spitz,
         .codec_dev = &soc_codec_dev_wm8750,
-        .codec_data = &spitz_wm8750_setup,
 };
 
+/*
+ * FIXME: This is a temporary bodge to avoid cross-tree merge issues.
+ * New drivers should register the wm8750 I2C device in the machine
+ * setup code (under arch/arm for ARM systems).
+ */
+static int wm8750_i2c_register(void)
+{
+        struct i2c_board_info info;
+        struct i2c_adapter *adapter;
+        struct i2c_client *client;
+
+        memset(&info, 0, sizeof(struct i2c_board_info));
+        info.addr = 0x1b;
+        strlcpy(info.type, "wm8750", I2C_NAME_SIZE);
+
+        adapter = i2c_get_adapter(0);
+        if (!adapter) {
+                printk(KERN_ERR "can't get i2c adapter 0\n");
+                return -ENODEV;
+        }
+
+        client = i2c_new_device(adapter, &info);
+        i2c_put_adapter(adapter);
+        if (!client) {
+                printk(KERN_ERR "can't add i2c device at 0x%x\n",
+                (unsigned int)info.addr);
+                return -ENODEV;
+        }
+
+        return 0;
+}
+
 static struct platform_device *spitz_snd_device;
 
 static int __init spitz_init(void)
@@ -344,6 +369,10 @@ static int __init spitz_init(void)
         if (!(machine_is_spitz() || machine_is_borzoi() || machine_is_akita()))
                 return -ENODEV;
 
+        ret = wm8750_i2c_setup();
+        if (ret != 0)
+                return ret;
+
         spitz_snd_device = platform_device_alloc("soc-audio", -1);
         if (!spitz_snd_device)
                 return -ENOMEM;
diff --git a/sound/soc/s3c24xx/jive_wm8750.c b/sound/soc/s3c24xx/jive_wm8750.c
index 59dc2c6b56d9..97d8ff3196be 100644
--- a/sound/soc/s3c24xx/jive_wm8750.c
+++ b/sound/soc/s3c24xx/jive_wm8750.c
@@ -152,15 +152,10 @@ static struct snd_soc_card snd_soc_machine_jive = {
         .num_links      = 1,
 };
 
-/* jive audio private data */
-static struct wm8750_setup_data jive_wm8750_setup = {
-};
-
 /* jive audio subsystem */
 static struct snd_soc_device jive_snd_devdata = {
         .card           = &snd_soc_machine_jive,
         .codec_dev      = &soc_codec_dev_wm8750,
-        .codec_data     = &jive_wm8750_setup,
 };
 
 static struct platform_device *jive_snd_device;