The VIDIOC_DBG_G/S_REGISTER ioctls imply that VIDIOC_DBG_G_CHIP_INFO is also
present, since without that you cannot use v4l2-dbg.
Just like the implementation in v4l2-ioctl.c this can be implemented in the
core and no drivers need to be modified.
It also makes it possible for v4l2-compliance to properly test the
VIDIOC_DBG_G/S_REGISTER ioctls.
Signed-off-by: Hans Verkuil <hans.verkuil@xxxxxxxxx>
---
diff --git a/drivers/media/v4l2-core/v4l2-subdev.c b/drivers/media/v4l2-core/v4l2-subdev.c
index 43fefa73e0a3..77210a20e90e 100644
--- a/drivers/media/v4l2-core/v4l2-subdev.c
+++ b/drivers/media/v4l2-core/v4l2-subdev.c
@@ -239,6 +255,19 @@ static long subdev_do_ioctl(struct file *file, unsigned int cmd, void *arg)
return -EPERM;
return v4l2_subdev_call(sd, core, s_register, p);
}
+ case VIDIOC_DBG_G_CHIP_INFO:
+ {
+ struct v4l2_dbg_chip_info *p = arg;
+
+ if (p->match.type != V4L2_CHIP_MATCH_SUBDEV || p->match.addr)
+ return -EINVAL;
+ if (sd->ops->core && sd->ops->core->s_register)
+ p->flags |= V4L2_CHIP_FL_WRITABLE;
+ if (sd->ops->core && sd->ops->core->g_register)
+ p->flags |= V4L2_CHIP_FL_READABLE;
+ strlcpy(p->name, sd->name, sizeof(p->name));
+ return 0;
+ }
#endif
case VIDIOC_LOG_STATUS: {
