[media] v4l2: add new VIDIOC_DBG_G_CHIP_NAME ioctl
Simplify the debugging ioctls by creating the VIDIOC_DBG_G_CHIP_NAME ioctl.
This will eventually replace VIDIOC_DBG_G_CHIP_IDENT. Chip matching is done
by the name or index of subdevices or an index to a bridge chip. Most of this
can all be done automatically, so most drivers just need to provide get/set
register ops.
In particular, it is now possible to get/set subdev registers without
requiring assistance of the bridge driver.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
diff --git a/drivers/media/v4l2-core/v4l2-common.c b/drivers/media/v4l2-core/v4l2-common.c
index a9e7703..f8fac9c 100644
--- a/drivers/media/v4l2-core/v4l2-common.c
+++ b/drivers/media/v4l2-core/v4l2-common.c
@@ -230,7 +230,7 @@
int v4l2_chip_match_host(const struct v4l2_dbg_match *match)
{
switch (match->type) {
- case V4L2_CHIP_MATCH_HOST:
+ case V4L2_CHIP_MATCH_BRIDGE:
return match->addr == 0;
default:
return 0;
@@ -254,6 +254,9 @@
return len && !strncmp(c->driver->driver.name, match->name, len);
case V4L2_CHIP_MATCH_I2C_ADDR:
return c->addr == match->addr;
+ case V4L2_CHIP_MATCH_SUBDEV_IDX:
+ case V4L2_CHIP_MATCH_SUBDEV_NAME:
+ return 1;
default:
return 0;
}