ASoC: Add SPI support to WM8711

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

1 files changed, 66 insertions, 0 deletions

diff --git a/sound/soc/codecs/wm8711.c b/sound/soc/codecs/wm8711.c
index c7b1af89297b..1a7fca7d1ef9 100644
--- a/sound/soc/codecs/wm8711.c
+++ b/sound/soc/codecs/wm8711.c
@@ -535,6 +535,62 @@ static void wm8711_unregister(struct wm8711_priv *wm8711)
         wm8711_codec = NULL;
 }
 
+#if defined(CONFIG_SPI_MASTER)
+static int __devinit wm8711_spi_probe(struct spi_device *spi)
+{
+        struct snd_soc_codec *codec;
+        struct wm8711_priv *wm8711;
+
+        wm8711 = kzalloc(sizeof(struct wm8711_priv), GFP_KERNEL);
+        if (wm8711 == NULL)
+                return -ENOMEM;
+
+        codec = &wm8711->codec;
+        codec->control_data = spi;
+        codec->dev = &spi->dev;
+
+        dev_set_drvdata(&spi->dev, wm8711);
+
+        return wm8711_register(wm8711, SND_SOC_SPI);
+}
+
+static int __devexit wm8711_spi_remove(struct spi_device *spi)
+{
+        struct wm8711_priv *wm8711 = dev_get_drvdata(&spi->dev);
+
+        wm8711_unregister(wm8711);
+
+        return 0;
+}
+
+#ifdef CONFIG_PM
+static int wm8711_spi_suspend(struct spi_device *spi, pm_message_t msg)
+{
+        return snd_soc_suspend_device(&spi->dev);
+}
+
+static int wm8711_spi_resume(struct spi_device *spi)
+{
+        return snd_soc_resume_device(&spi->dev);
+}
+#else
+#define wm8711_spi_suspend NULL
+#define wm8711_spi_resume NULL
+#endif
+
+static struct spi_driver wm8711_spi_driver = {
+        .driver = {
+                .name   = "wm8711",
+                .bus    = &spi_bus_type,
+                .owner  = THIS_MODULE,
+        },
+        .probe          = wm8711_spi_probe,
+        .suspend        = wm8711_spi_suspend,
+        .resume         = wm8711_spi_resume,
+        .remove         = __devexit_p(wm8711_spi_remove),
+};
+#endif /* CONFIG_SPI_MASTER */
+
 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
 static __devinit int wm8711_i2c_probe(struct i2c_client *i2c,
                                       const struct i2c_device_id *id)
@@ -591,6 +647,13 @@ static int __init wm8711_modinit(void)
                        ret);
         }
 #endif
+#if defined(CONFIG_SPI_MASTER)
+        ret = spi_register_driver(&wm8731_spi_driver);
+        if (ret != 0) {
+                printk(KERN_ERR "Failed to register WM8731 SPI driver: %d\n",
+                       ret);
+        }
+#endif
         return 0;
 }
 module_init(wm8711_modinit);
@@ -600,6 +663,9 @@ static void __exit wm8711_exit(void)
 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
         i2c_del_driver(&wm8711_i2c_driver);
 #endif
+#if defined(CONFIG_SPI_MASTER)
+        spi_unregister_driver(&wm8731_spi_driver);
+#endif
 }
 module_exit(wm8711_exit);