The wm8782 supports rates 96kHz and 192kHz as long as the hardware
is configured properly. Allow this to be specified in the device tree.
Signed-off-by: John Watts <contact@xxxxxxxxxx>
Acked-by: Charles Keepax <ckeepax@xxxxxxxxxxxxxxxxxxxxx>
---
sound/soc/codecs/wm8782.c | 25 ++++++++++++++++++++++---
1 file changed, 22 insertions(+), 3 deletions(-)
diff --git a/sound/soc/codecs/wm8782.c b/sound/soc/codecs/wm8782.c
index f3dc87b92b1e..3a2acdfa9b85 100644
--- a/sound/soc/codecs/wm8782.c
+++ b/sound/soc/codecs/wm8782.c
@@ -119,8 +119,9 @@ static const struct snd_soc_component_driver soc_component_dev_wm8782 = {
static int wm8782_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
+ struct device_node *np = dev->of_node;
struct wm8782_priv *priv;
- int ret, i;
+ int ret, i, fsampen;
priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
if (!priv)
@@ -136,8 +137,26 @@ static int wm8782_probe(struct platform_device *pdev)
if (ret < 0)
return ret;
- /* For configurations with FSAMPEN=0 */
- priv->max_rate = 48000;
+ // Assume lowest value by default to avoid inadvertent overclocking
+ fsampen = 0;
+
+ if (np)
+ of_property_read_u32(np, "wlf,fsampen", &fsampen);
+
+ switch (fsampen) {
+ case 0:
+ priv->max_rate = 48000;
+ break;
+ case 1:
+ priv->max_rate = 96000;
+ break;
+ case 2:
+ priv->max_rate = 192000;
+ break;
+ default:
+ dev_err(dev, "Invalid wlf,fsampen value");
+ return -EINVAL;
+ }
return devm_snd_soc_register_component(&pdev->dev,
&soc_component_dev_wm8782, &wm8782_dai, 1);
--
2.42.0
