ASoC: Convert WM8753 to register via normal device probe

The base support for the only in-tree user, the GTA01, is out of tree
and will be updated separately.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

1 files changed, 171 insertions, 198 deletions

diff --git a/sound/soc/codecs/wm8753.c b/sound/soc/codecs/wm8753.c
index 4b426888f98d..bc29558149e9 100644
--- a/sound/soc/codecs/wm8753.c
+++ b/sound/soc/codecs/wm8753.c
@@ -63,12 +63,6 @@ MODULE_PARM_DESC(caps_charge, "WM8753 cap charge time (msecs)");
 static void wm8753_set_dai_mode(struct snd_soc_codec *codec,
         unsigned int mode);
 
-/* codec private data */
-struct wm8753_priv {
-        unsigned int sysclk;
-        unsigned int pcmclk;
-};
-
 /*
  * wm8753 register cache
  * We can't read the WM8753 register space when we
@@ -93,6 +87,14 @@ static const u16 wm8753_reg[] = {
         0x0000, 0x0000
 };
 
+/* codec private data */
+struct wm8753_priv {
+        unsigned int sysclk;
+        unsigned int pcmclk;
+        struct snd_soc_codec codec;
+        u16 reg_cache[ARRAY_SIZE(wm8753_reg)];
+};
+
 /*
  * read wm8753 register cache
  */
@@ -1542,36 +1544,24 @@ static int wm8753_resume(struct platform_device *pdev)
         return 0;
 }
 
-/*
- * initialise the WM8753 driver
- * register the mixer and dsp interfaces with the kernel
- */
-static int wm8753_init(struct snd_soc_device *socdev)
+static struct snd_soc_codec *wm8753_codec;
+
+static int wm8753_probe(struct platform_device *pdev)
 {
-        struct snd_soc_codec *codec = socdev->card->codec;
-        int reg, ret = 0;
+        struct snd_soc_device *socdev = platform_get_drvdata(pdev);
+        struct snd_soc_codec *codec;
+        int ret = 0;
 
-        codec->name = "WM8753";
-        codec->owner = THIS_MODULE;
-        codec->read = wm8753_read_reg_cache;
-        codec->write = wm8753_write;
-        codec->set_bias_level = wm8753_set_bias_level;
-        codec->dai = wm8753_dai;
-        codec->num_dai = 2;
-        codec->reg_cache_size = ARRAY_SIZE(wm8753_reg);
-        codec->reg_cache = kmemdup(wm8753_reg, sizeof(wm8753_reg), GFP_KERNEL);
+        if (!wm8753_codec) {
+                dev_err(&pdev->dev, "WM8753 codec not yet registered\n");
+                return -EINVAL;
+        }
 
-        if (codec->reg_cache == NULL)
-                return -ENOMEM;
+        socdev->card->codec = wm8753_codec;
+        codec = wm8753_codec;
 
         wm8753_set_dai_mode(codec, 0);
 
-        ret = wm8753_reset(codec);
-        if (ret < 0) {
-                printk(KERN_ERR "wm8753: failed to reset device\n");
-                return ret;
-        }
-
         /* register pcms */
         ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);
         if (ret < 0) {
@@ -1579,36 +1569,7 @@ static int wm8753_init(struct snd_soc_device *socdev)
                 goto pcm_err;
         }
 
-        /* charge output caps */
-        wm8753_set_bias_level(codec, SND_SOC_BIAS_PREPARE);
-        codec->bias_level = SND_SOC_BIAS_STANDBY;
-        schedule_delayed_work(&codec->delayed_work,
-                msecs_to_jiffies(caps_charge));
-
-        /* set the update bits */
-        reg = wm8753_read_reg_cache(codec, WM8753_LDAC);
-        wm8753_write(codec, WM8753_LDAC, reg | 0x0100);
-        reg = wm8753_read_reg_cache(codec, WM8753_RDAC);
-        wm8753_write(codec, WM8753_RDAC, reg | 0x0100);
-        reg = wm8753_read_reg_cache(codec, WM8753_LADC);
-        wm8753_write(codec, WM8753_LADC, reg | 0x0100);
-        reg = wm8753_read_reg_cache(codec, WM8753_RADC);
-        wm8753_write(codec, WM8753_RADC, reg | 0x0100);
-        reg = wm8753_read_reg_cache(codec, WM8753_LOUT1V);
-        wm8753_write(codec, WM8753_LOUT1V, reg | 0x0100);
-        reg = wm8753_read_reg_cache(codec, WM8753_ROUT1V);
-        wm8753_write(codec, WM8753_ROUT1V, reg | 0x0100);
-        reg = wm8753_read_reg_cache(codec, WM8753_LOUT2V);
-        wm8753_write(codec, WM8753_LOUT2V, reg | 0x0100);
-        reg = wm8753_read_reg_cache(codec, WM8753_ROUT2V);
-        wm8753_write(codec, WM8753_ROUT2V, reg | 0x0100);
-        reg = wm8753_read_reg_cache(codec, WM8753_LINVOL);
-        wm8753_write(codec, WM8753_LINVOL, reg | 0x0100);
-        reg = wm8753_read_reg_cache(codec, WM8753_RINVOL);
-        wm8753_write(codec, WM8753_RINVOL, reg | 0x0100);
-
-        snd_soc_add_controls(codec, wm8753_snd_controls,
-                                ARRAY_SIZE(wm8753_snd_controls));
+        wm8753_add_controls(codec);
         wm8753_add_widgets(codec);
         ret = snd_soc_init_card(socdev);
         if (ret < 0) {
@@ -1616,110 +1577,13 @@ static int wm8753_init(struct snd_soc_device *socdev)
                 goto card_err;
         }
 
-        return ret;
+        return 0;
 
 card_err:
         snd_soc_free_pcms(socdev);
         snd_soc_dapm_free(socdev);
-pcm_err:
-        kfree(codec->reg_cache);
-        return ret;
-}
-
-/* If the i2c layer weren't so broken, we could pass this kind of data
-   around */
-static struct snd_soc_device *wm8753_socdev;
-
-#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
-static struct i2c_driver wm8753_i2c_driver;
-
-static int wm8753_add_i2c_device(struct platform_device *pdev,
-                                 const struct wm8753_setup_data *setup)
-{
-        struct i2c_board_info info;
-        struct i2c_adapter *adapter;
-        struct i2c_client *client;
-        int ret;
-
-        ret = i2c_add_driver(&wm8753_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, "wm8753", 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(&wm8753_i2c_driver);
-        return -ENODEV;
-}
-#endif
-
-static int wm8753_probe(struct platform_device *pdev)
-{
-        struct snd_soc_device *socdev = platform_get_drvdata(pdev);
-        struct wm8753_setup_data *setup;
-        struct snd_soc_codec *codec;
-        struct wm8753_priv *wm8753;
-        int ret = 0;
-
-        setup = socdev->codec_data;
-        codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL);
-        if (codec == NULL)
-                return -ENOMEM;
-
-        wm8753 = kzalloc(sizeof(struct wm8753_priv), GFP_KERNEL);
-        if (wm8753 == NULL) {
-                kfree(codec);
-                return -ENOMEM;
-        }
-
-        codec->private_data = wm8753;
-        socdev->card->codec = codec;
-        mutex_init(&codec->mutex);
-        INIT_LIST_HEAD(&codec->dapm_widgets);
-        INIT_LIST_HEAD(&codec->dapm_paths);
-        wm8753_socdev = socdev;
-        INIT_DELAYED_WORK(&codec->delayed_work, wm8753_work);
-
-#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
-        if (setup->i2c_address) {
-                codec->hw_write = (hw_write_t)i2c_master_send;
-                ret = wm8753_add_i2c_device(pdev, setup);
-        }
-#endif
-#if defined(CONFIG_SPI_MASTER)
-        if (setup->spi) {
-                codec->hw_write = (hw_write_t)wm8753_spi_write;
-                ret = spi_register_driver(&wm8753_spi_driver);
-                if (ret != 0)
-                        printk(KERN_ERR "can't add spi driver");
-        }
-#endif
 
-        if (ret != 0) {
-                kfree(codec->private_data);
-                kfree(codec);
-        }
+pcm_err:
         return ret;
 }
 
@@ -1746,26 +1610,9 @@ static int run_delayed_work(struct delayed_work *dwork)
 static int wm8753_remove(struct platform_device *pdev)
 {
         struct snd_soc_device *socdev = platform_get_drvdata(pdev);
-        struct snd_soc_codec *codec = socdev->card->codec;
-        struct wm8753_setup_data *setup = socdev->codec_data;
 
-        if (codec->control_data)
-                wm8753_set_bias_level(codec, SND_SOC_BIAS_OFF);
-        run_delayed_work(&codec->delayed_work);
         snd_soc_free_pcms(socdev);
         snd_soc_dapm_free(socdev);
-#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
-        if (setup->i2c_address) {
-                i2c_unregister_device(codec->control_data);
-                i2c_del_driver(&wm8753_i2c_driver);
-        }
-#endif
-#if defined(CONFIG_SPI_MASTER)
-        if (setup->spi)
-                spi_unregister_driver(&wm8753_spi_driver);
-#endif
-        kfree(codec->private_data);
-        kfree(codec);
 
         return 0;
 }
@@ -1778,30 +1625,134 @@ struct snd_soc_codec_device soc_codec_dev_wm8753 = {
 };
 EXPORT_SYMBOL_GPL(soc_codec_dev_wm8753);
 
+static int wm8753_register(struct wm8753_priv *wm8753)
+{
+        int ret, i;
+        struct snd_soc_codec *codec = &wm8753->codec;
+        u16 reg;
+
+        if (wm8753_codec) {
+                dev_err(codec->dev, "Multiple WM8753 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 = "WM8753";
+        codec->owner = THIS_MODULE;
+        codec->read = wm8753_read_reg_cache;
+        codec->write = wm8753_write;
+        codec->bias_level = SND_SOC_BIAS_STANDBY;
+        codec->set_bias_level = wm8753_set_bias_level;
+        codec->dai = wm8753_dai;
+        codec->num_dai = 2;
+        codec->reg_cache_size = ARRAY_SIZE(wm8753->reg_cache);
+        codec->reg_cache = &wm8753->reg_cache;
+        codec->private_data = wm8753;
+
+        memcpy(codec->reg_cache, wm8753_reg, sizeof(codec->reg_cache));
+        INIT_DELAYED_WORK(&codec->delayed_work, wm8753_work);
+
+        ret = wm8753_reset(codec);
+        if (ret < 0) {
+                dev_err(codec->dev, "Failed to issue reset\n");
+                goto err;
+        }
+
+        /* charge output caps */
+        wm8753_set_bias_level(codec, SND_SOC_BIAS_PREPARE);
+        schedule_delayed_work(&codec->delayed_work,
+                              msecs_to_jiffies(caps_charge));
+
+        /* set the update bits */
+        reg = wm8753_read_reg_cache(codec, WM8753_LDAC);
+        wm8753_write(codec, WM8753_LDAC, reg | 0x0100);
+        reg = wm8753_read_reg_cache(codec, WM8753_RDAC);
+        wm8753_write(codec, WM8753_RDAC, reg | 0x0100);
+        reg = wm8753_read_reg_cache(codec, WM8753_LADC);
+        wm8753_write(codec, WM8753_LADC, reg | 0x0100);
+        reg = wm8753_read_reg_cache(codec, WM8753_RADC);
+        wm8753_write(codec, WM8753_RADC, reg | 0x0100);
+        reg = wm8753_read_reg_cache(codec, WM8753_LOUT1V);
+        wm8753_write(codec, WM8753_LOUT1V, reg | 0x0100);
+        reg = wm8753_read_reg_cache(codec, WM8753_ROUT1V);
+        wm8753_write(codec, WM8753_ROUT1V, reg | 0x0100);
+        reg = wm8753_read_reg_cache(codec, WM8753_LOUT2V);
+        wm8753_write(codec, WM8753_LOUT2V, reg | 0x0100);
+        reg = wm8753_read_reg_cache(codec, WM8753_ROUT2V);
+        wm8753_write(codec, WM8753_ROUT2V, reg | 0x0100);
+        reg = wm8753_read_reg_cache(codec, WM8753_LINVOL);
+        wm8753_write(codec, WM8753_LINVOL, reg | 0x0100);
+        reg = wm8753_read_reg_cache(codec, WM8753_RINVOL);
+        wm8753_write(codec, WM8753_RINVOL, reg | 0x0100);
+
+        wm8753_codec = codec;
+
+        for (i = 0; i < ARRAY_SIZE(wm8753_dai); i++)
+                wm8753_dai[i].dev = codec->dev;
+
+        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(&wm8753_dai[0], ARRAY_SIZE(wm8753_dai));
+        if (ret != 0) {
+                dev_err(codec->dev, "Failed to register DAIs: %d\n", ret);
+                goto err_codec;
+        }
+
+        return 0;
+
+err_codec:
+        run_delayed_work(&codec->delayed_work);
+        snd_soc_unregister_codec(codec);
+err:
+        kfree(wm8753);
+        return ret;
+}
+
+static void wm8753_unregister(struct wm8753_priv *wm8753)
+{
+        wm8753_set_bias_level(&wm8753->codec, SND_SOC_BIAS_OFF);
+        run_delayed_work(&wm8753->codec.delayed_work);
+        snd_soc_unregister_dais(&wm8753_dai[0], ARRAY_SIZE(wm8753_dai));
+        snd_soc_unregister_codec(&wm8753->codec);
+        kfree(wm8753);
+        wm8753_codec = NULL;
+}
+
 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
 
 static int wm8753_i2c_probe(struct i2c_client *i2c,
                             const struct i2c_device_id *id)
 {
-        struct snd_soc_device *socdev = wm8753_socdev;
-        struct snd_soc_codec *codec = socdev->card->codec;
-        int ret;
+        struct snd_soc_codec *codec;
+        struct wm8753_priv *wm8753;
 
-        i2c_set_clientdata(i2c, codec);
-        codec->control_data = i2c;
+        wm8753 = kzalloc(sizeof(struct wm8753_priv), GFP_KERNEL);
+        if (wm8753 == NULL)
+                return -ENOMEM;
 
-        ret = wm8753_init(socdev);
-        if (ret < 0)
-                pr_err("failed to initialise WM8753\n");
+        codec = &wm8753->codec;
+        codec->hw_write = (hw_write_t)i2c_master_send;
+        codec->control_data = i2c;
+        i2c_set_clientdata(i2c, wm8753);
 
-        return ret;
+        codec->dev = &i2c->dev;
+
+        return wm8753_register(wm8753);
 }
 
 static int wm8753_i2c_remove(struct i2c_client *client)
 {
-        struct snd_soc_codec *codec = i2c_get_clientdata(client);
-        kfree(codec->reg_cache);
-        return 0;
+        struct wm8753_priv *wm8753 = i2c_get_clientdata(client);
+        wm8753_unregister(wm8753);
+        return 0;
 }
 
 static const struct i2c_device_id wm8753_i2c_id[] = {
@@ -1812,7 +1763,7 @@ MODULE_DEVICE_TABLE(i2c, wm8753_i2c_id);
 
 static struct i2c_driver wm8753_i2c_driver = {
         .driver = {
-                .name = "WM8753 I2C Codec",
+                .name = "wm8753",
                 .owner = THIS_MODULE,
         },
         .probe =    wm8753_i2c_probe,
@@ -1848,21 +1799,27 @@ static int wm8753_spi_write(struct spi_device *spi, const char *data, int len)
 
 static int __devinit wm8753_spi_probe(struct spi_device *spi)
 {
-        struct snd_soc_device *socdev = wm8753_socdev;
-        struct snd_soc_codec *codec = socdev->card->codec;
-        int ret;
+        struct snd_soc_codec *codec;
+        struct wm8753_priv *wm8753;
+
+        wm8753 = kzalloc(sizeof(struct wm8753_priv), GFP_KERNEL);
+        if (wm8753 == NULL)
+                return -ENOMEM;
 
+        codec = &wm8753->codec;
         codec->control_data = spi;
+        codec->hw_write = (hw_write_t)wm8753_spi_write;
+        codec->dev = &spi->dev;
 
-        ret = wm8753_init(socdev);
-        if (ret < 0)
-                dev_err(&spi->dev, "failed to initialise WM8753\n");
+        spi->dev.driver_data = wm8753;
 
-        return ret;
+        return wm8753_register(wm8753);
 }
 
 static int __devexit wm8753_spi_remove(struct spi_device *spi)
 {
+        struct wm8753_priv *wm8753 = spi->dev.driver_data;
+        wm8753_unregister(wm8753);
         return 0;
 }
 
@@ -1879,13 +1836,29 @@ static struct spi_driver wm8753_spi_driver = {
 
 static int __init wm8753_modinit(void)
 {
-        return snd_soc_register_dais(wm8753_dai, ARRAY_SIZE(wm8753_dai));
+        int ret;
+#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
+        ret = i2c_add_driver(&wm8753_i2c_driver);
+        if (ret != 0)
+                pr_err("Failed to register WM8753 I2C driver: %d\n", ret);
+#endif
+#if defined(CONFIG_SPI_MASTER)
+        ret = spi_register_driver(&wm8753_spi_driver);
+        if (ret != 0)
+                pr_err("Failed to register WM8753 SPI driver: %d\n", ret);
+#endif
+        return 0;
 }
 module_init(wm8753_modinit);
 
 static void __exit wm8753_exit(void)
 {
-        snd_soc_unregister_dais(wm8753_dai, ARRAY_SIZE(wm8753_dai));
+#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
+        i2c_del_driver(&wm8753_i2c_driver);
+#endif
+#if defined(CONFIG_SPI_MASTER)
+        spi_unregister_driver(&wm8753_spi_driver);
+#endif
 }
 module_exit(wm8753_exit);