[media] v4l: vsp1: rwpf: Don't program alpha value in control set handler

Browse source

The datasheet clearly states that all but a few registers can't be
modified when the device is running. Programming the alpha value in
the control set handler is thus prohibited. Program it when starting the
module instead.

This requires storing the alpha value internally as the module can be
started from the frame completion interrupt handler, and accessing
control values requires taking a mutex.

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>

...

This commit is contained in:

Laurent Pinchart 2015-11-01 12:19:42 -02:00 • committed by Mauro Carvalho Chehab

parent 5fb2107346

commit bd2fdd5aa9

4 changed files with 47 additions and 99 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

51

drivers/media/platform/vsp1/vsp1_rpf.c

View file

35

drivers/media/platform/vsp1/vsp1_rwpf.c

View file

5

drivers/media/platform/vsp1/vsp1_rwpf.h

View file

55

drivers/media/platform/vsp1/vsp1_wpf.c

View file