Hello Takashi!
Since Focusrite devices are too advanced in settings, the overall amount of 256
controls is not enough for these devices (like 18i20).
I would like also to extend this constant up to 1024 or even more since adding
support of software configuration of the device also
can exceed the amount of 512 control elements.
Let's assume we have a mute switch for each mixer gain setting. For the 18i20
device this will give:
12 inputs * 25 outputs = 300 mute switches.
So I think this constant should be increased rapidly up to 1024 or even to 2048.
Best,
Vladimir
22.06.2021 10:00, Takashi Iwai пишет:
On Mon, 21 Jun 2021 20:09:48 +0200,
Geoffrey D. Bennett wrote:
Add mixer support for the Focusrite Scarlett 4i4, 8i6, 18i8, and 18i20
Gen 3 devices.
Signed-off-by: Geoffrey D. Bennett <g@xxxxx>
---
sound/usb/mixer.c | 2 +-
sound/usb/mixer_quirks.c | 4 +
sound/usb/mixer_scarlett_gen2.c | 260 +++++++++++++++++++++++++++++---
3 files changed, 246 insertions(+), 20 deletions(-)
diff --git a/sound/usb/mixer.c b/sound/usb/mixer.c
index 428d581f988f..ba4aa1eacb04 100644
--- a/sound/usb/mixer.c
+++ b/sound/usb/mixer.c
@@ -50,7 +50,7 @@
#include "mixer_quirks.h"
#include "power.h"
-#define MAX_ID_ELEMS 256
+#define MAX_ID_ELEMS 512
This change requires the explanation.
Usually the unit id is a byte per definition, so it can't be over
256.
thanks,
Takashi
