ASoC: Add suspend and resume callbacks to Wolfson CODEC drivers

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

1 files changed, 39 insertions, 0 deletions

diff --git a/sound/soc/codecs/wm8731.c b/sound/soc/codecs/wm8731.c
index 7a205876ef4f..d7f4788f7ace 100644
--- a/sound/soc/codecs/wm8731.c
+++ b/sound/soc/codecs/wm8731.c
@@ -460,6 +460,7 @@ struct snd_soc_dai wm8731_dai = {
 };
 EXPORT_SYMBOL_GPL(wm8731_dai);
 
+#ifdef CONFIG_PM
 static int wm8731_suspend(struct platform_device *pdev, pm_message_t state)
 {
         struct snd_soc_device *socdev = platform_get_drvdata(pdev);
@@ -488,6 +489,10 @@ static int wm8731_resume(struct platform_device *pdev)
         wm8731_set_bias_level(codec, codec->suspend_bias_level);
         return 0;
 }
+#else
+#define wm8731_suspend NULL
+#define wm8731_resume NULL
+#endif
 
 static int wm8731_probe(struct platform_device *pdev)
 {
@@ -680,6 +685,21 @@ static int __devexit wm8731_spi_remove(struct spi_device *spi)
         return 0;
 }
 
+#ifdef CONFIG_PM
+static int wm8731_spi_suspend(struct spi_device *spi, pm_message_t msg)
+{
+        return snd_soc_suspend_device(&spi->dev);
+}
+
+static int wm8731_spi_resume(struct spi_device *spi)
+{
+        return snd_soc_resume_device(&spi->dev);
+}
+#else
+#define wm8731_spi_suspend NULL
+#define wm8731_spi_resume NULL
+#endif
+
 static struct spi_driver wm8731_spi_driver = {
         .driver = {
                 .name   = "wm8731",
@@ -687,6 +707,8 @@ static struct spi_driver wm8731_spi_driver = {
                 .owner  = THIS_MODULE,
         },
         .probe          = wm8731_spi_probe,
+        .suspend        = wm8731_spi_suspend,
+        .resume         = wm8731_spi_resume,
         .remove         = __devexit_p(wm8731_spi_remove),
 };
 #endif /* CONFIG_SPI_MASTER */
@@ -720,6 +742,21 @@ static __devexit int wm8731_i2c_remove(struct i2c_client *client)
         return 0;
 }
 
+#ifdef CONFIG_PM
+static int wm8731_i2c_suspend(struct i2c_client *i2c, pm_message_t msg)
+{
+        return snd_soc_suspend_device(&i2c->dev);
+}
+
+static int wm8731_i2c_resume(struct i2c_client *i2c)
+{
+        return snd_soc_resume_device(&i2c->dev);
+}
+#else
+#define wm8731_i2c_suspend NULL
+#define wm8731_i2c_resume NULL
+#endif
+
 static const struct i2c_device_id wm8731_i2c_id[] = {
         { "wm8731", 0 },
         { }
@@ -733,6 +770,8 @@ static struct i2c_driver wm8731_i2c_driver = {
         },
         .probe =    wm8731_i2c_probe,
         .remove =   __devexit_p(wm8731_i2c_remove),
+        .suspend =  wm8731_i2c_suspend,
+        .resume =   wm8731_i2c_resume,
         .id_table = wm8731_i2c_id,
 };
 #endif