On 29. 10. 21 17:08, Sameer Pujar wrote:
On 10/26/2021 11:53 AM, Sameer Pujar wrote:
On 10/25/2021 6:28 PM, Jaroslav Kysela wrote:
On 25. 10. 21 13:06, Sameer Pujar wrote:
@@ -150,11 +186,22 @@ static int tegra210_mvc_put_mute(struct
snd_kcontrol *kcontrol,
...
return 1;
It's a bit unrelated comment to this change, but it may be worth to
verify all
kcontrol put callbacks in the tegra code. Ensure that value 1 is
returned only
when something was really changed in hardware.
There are cases when the mixer control update is not immediately written
to HW, instead the update is ACKed (stored in variable) and writen to HW
at a later point of time. Do these cases qualify for "return 1" as well?
Yes - assuming that the get callback returns the cached value. The get/put
implementation should be consistent from the caller view. The driver
implementation (delayed write) is a separate thing.
Jaroslav
--
Jaroslav Kysela <perex@xxxxxxxx>
Linux Sound Maintainer; ALSA Project; Red Hat, Inc.
