revert android-tegra-2.6.36-honeycomb-mr1-9001adc to v2.6.36

[firefly-linux-kernel-4.4.55.git] / sound / soc / codecs / wm8900.c

diff --git a/sound/soc/codecs/wm8900.c b/sound/soc/codecs/wm8900.c
index 4b8ffc2ea71ddbdeb01913a40f26efb7a071c107..5da17a704e5a9ba2d40d27a14b24a0fff701594e 100755 (executable)
--- a/sound/soc/codecs/wm8900.c
+++ b/sound/soc/codecs/wm8900.c
@@ -188,6 +188,7 @@ static int wm8900_volatile_register(unsigned int reg)
 {
        switch (reg) {
        case WM8900_REG_ID:
+       case WM8900_REG_POWER1:
                return 1;
        default:
                return 0;
@@ -1235,6 +1236,11 @@ static __devinit int wm8900_i2c_probe(struct i2c_client *i2c,
                goto err;
        }
 
+       /* Read back from the chip */
+       reg = snd_soc_read(codec, WM8900_REG_POWER1);
+       reg = (reg >> 12) & 0xf;
+       dev_info(&i2c->dev, "WM8900 revision %d\n", reg);
+
        wm8900_reset(codec);
 
        /* Turn the chip on */