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[media] v4l2: add new VIDIOC_DBG_G_CHIP_NAME ioctl

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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>
This commit is contained in:
Hans Verkuil
2013-03-18 12:16:34 -03:00
committed by Mauro Carvalho Chehab
parent 820eac0ef8
commit 79b0c64005
5 changed files with 146 additions and 16 deletions
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3
include/media/v4l2-ioctl.h
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@@ -247,6 +247,9 @@ struct v4l2_ioctl_ops {
int (*vidioc_g_chip_ident) (struct file *file, void *fh,
struct v4l2_dbg_chip_ident *chip);
int (*vidioc_g_chip_name) (struct file *file, void *fh,
struct v4l2_dbg_chip_name *chip);
int (*vidioc_enum_framesizes) (struct file *file, void *fh,
struct v4l2_frmsizeenum *fsize);