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path: root/drivers/media/v4l2-core/v4l2-subdev.c
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2015-07-17[media] Add helper function for subdev event notificationsLars-Peter Clausen1-0/+18
Add a new helper function called v4l2_subdev_notify_event() which will deliver the specified event to both the v4l2 subdev event queue as well as to the notify callback. The former is typically used by userspace applications to listen to notification events while the later is used by bridge drivers. Combining both into the same function avoids boilerplate code in subdev drivers. Signed-off-by: Lars-Peter Clausen <lars@metafoo.de> Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
2015-04-08[media] V4L2: Delete an unnecessary check before the function call ↵Markus Elfring1-2/+1
"media_entity_put" The media_entity_put() function tests whether its argument is NULL and then returns immediately. Thus the test around the call is not needed. This issue was detected by using the Coccinelle software. Signed-off-by: Markus Elfring <elfring@users.sourceforge.net> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
2015-03-23[media] v4l2-subdev.c: add 'which' checks for enum opsHans Verkuil1-0/+12
Return an error if an invalid 'which' valid is passed in. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Acked-by: Lad, Prabhakar <prabhakar.csengg@gmail.com> Tested-by: Lad, Prabhakar <prabhakar.csengg@gmail.com> Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Acked-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
2015-03-23[media] v4l2-subdev: replace v4l2_subdev_fh by v4l2_subdev_pad_configHans Verkuil1-9/+9
If a subdevice pad op is called from a bridge driver, then there is no v4l2_subdev_fh struct that can be passed to the subdevice. This made it hard to use such subdevs from a bridge driver. This patch replaces the v4l2_subdev_fh pointer by a v4l2_subdev_pad_config pointer in the pad ops. This allows bridge drivers to use the various try_ pad ops by creating a v4l2_subdev_pad_config struct and passing it along to the pad op. The v4l2_subdev_get_try_* macros had to be changed because of this, so I also took the opportunity to use the full name of the v4l2_subdev_get_try_* functions in the __V4L2_SUBDEV_MK_GET_TRY macro arguments: if you now do 'git grep v4l2_subdev_get_try_format' you will actually find the header where it is defined. One remark regarding the drivers/staging/media/davinci_vpfe patches: the *_init_formats() functions assumed that fh could be NULL. However, that's not true for this driver, it's always set. This is almost certainly a copy and paste from the omap3isp driver. I've updated the code to reflect the fact that fh is never NULL. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Acked-by: Lad, Prabhakar <prabhakar.csengg@gmail.com> Tested-by: Lad, Prabhakar <prabhakar.csengg@gmail.com> Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com> Acked-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
2014-12-22[media] v4l2-subdev: drop get/set_crop pad opsHans Verkuil1-8/+0
Drop the duplicate get/set_crop pad ops and only use get/set_selection. It makes no sense to have two duplicate ops in the internal subdev API. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
2014-08-21[media] v4l: subdev: Extend default link validation to cover field orderLaurent Pinchart1-0/+9
The field order must match between the source and sink pads, or the sink pad field order must be NONE. This allows connecting an interlaced source to a bridge that has no hardware support for interlaced formats. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Tested-by: Enrico Butera <ebutera@users.sourceforge.net> Acked-by: Sakari Ailus <sakari.ailus@iki.fi> Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
2014-07-22[media] v4l2-subdev: Fix compilation when !VIDEO_V4L2_SUBDEV_APIMauro Carvalho Chehab1-1/+3
As reported by Kbuildtest: drivers/media/v4l2-core/v4l2-subdev.c: In function 'check_format': drivers/media/v4l2-core/v4l2-subdev.c:136:23: error: 'struct v4l2_subdev' has no member named 'entity' if (format->pad >= sd->entity.num_pads) ^ drivers/media/v4l2-core/v4l2-subdev.c: In function 'check_crop': drivers/media/v4l2-core/v4l2-subdev.c:148:21: error: 'struct v4l2_subdev' has no member named 'entity' if (crop->pad >= sd->entity.num_pads) ^ drivers/media/v4l2-core/v4l2-subdev.c: In function 'check_selection': drivers/media/v4l2-core/v4l2-subdev.c:161:20: error: 'struct v4l2_subdev' has no member named 'entity' if (sel->pad >= sd->entity.num_pads) ^ drivers/media/v4l2-core/v4l2-subdev.c: In function 'check_edid': drivers/media/v4l2-core/v4l2-subdev.c:169:21: error: 'struct v4l2_subdev' has no member named 'entity' if (edid->pad >= sd->entity.num_pads) ^ drivers/media/v4l2-core/v4l2-subdev.c: In function 'subdev_do_ioctl': >> drivers/media/v4l2-core/v4l2-subdev.c:186:6: warning: unused variable 'rval' [-Wunused-variable] int rval; ^ drivers/media/v4l2-core/v4l2-subdev.c: At top level: drivers/media/v4l2-core/v4l2-subdev.c:129:12: warning: 'check_format' defined but not used [-Wunused-function] static int check_format(struct v4l2_subdev *sd, ^ drivers/media/v4l2-core/v4l2-subdev.c:142:12: warning: 'check_crop' defined but not used [-Wunused-function] static int check_crop(struct v4l2_subdev *sd, struct v4l2_subdev_crop *crop) ^ drivers/media/v4l2-core/v4l2-subdev.c:154:12: warning: 'check_selection' defined but not used [-Wunused-function] static int check_selection(struct v4l2_subdev *sd, ^ drivers/media/v4l2-core/v4l2-subdev.c:167:12: warning: 'check_edid' defined but not used [-Wunused-function] static int check_edid(struct v4l2_subdev *sd, struct v4l2_subdev_edid *edid) The above warnins happen because those functions are used only when the V4L2 subdev API is enabled. Reported-by: kbuild test robot <fengguang.wu@intel.com> Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
2014-07-22[media] v4l: subdev: Unify argument validation across IOCTLsSakari Ailus1-46/+74
Separate validation of different argument types. There's no reason to do this separately for every IOCTL. Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
2014-07-17[media] v4l2: integrate support for VIDIOC_QUERY_EXT_CTRLHans Verkuil1-0/+3
Add the v4l2 core plumbing for the new VIDIOC_QUERY_EXT_CTRL ioctl. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Reviewed-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
2014-05-25[media] v4l: Validate fields in the core code for subdev EDID ioctlsLaurent Pinchart1-4/+20
The subdev EDID ioctls receive a pad field that must reference an existing pad and an EDID field that must point to a buffer. Validate both fields in the core code instead of duplicating validation in all drivers. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com> Reviewed-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
2014-05-25[media] v4l: Add support for DV timings ioctls on subdev nodesLaurent Pinchart1-0/+27
Validate the pad field in the core code whenever specified. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
2014-05-13[media] v4l: Check pad arguments for [gs]_frame_intervalSakari Ailus1-2/+14
VIDIOC_SUBDEV_[GS]_FRAME_INTERVAL IOCTLs argument structs contain the pad field but the validity check was missing. There should be no implications security-wise from this since no driver currently uses the pad field in the struct. Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
2014-03-11[media] v4l2: add VIDIOC_G/S_EDID support to the v4l2 coreHans Verkuil1-2/+2
Support this ioctl as part of the v4l2 core. Use the new ioctl name and struct v4l2_edid type in the existing core code. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
2014-02-24[media] v4l2-subdev: Allow 32-bit compat ioctlsHans Verkuil1-0/+14
Add support for 32-bit ioctls with v4l-subdev device nodes. Rather than keep adding new ioctls to the list in v4l2-compat-ioctl32.c, just check if the ioctl is a non-private V4L2 ioctl and if so, call the conversion code. We keep forgetting to add new ioctls, so this is a more robust solution. In addition extend the subdev API with support for a compat32 function to convert custom v4l-subdev ioctls. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Tested-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
2012-11-22[media] v4l: Don't warn during link validation when encountering a V4L2 devnodeLaurent Pinchart1-11/+11
v4l2_subdev_link_validate_get_format() retrieves the remote pad format depending on the entity type and prints a warning if the entity type is not supported. The type check doesn't take the subtype into account, and thus always prints a warning for device node types, even when supported. Fix it. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Acked-by: Sakari Ailus <sakari.ailus@iki.fi> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-09-13[media] v4l2-subdev: add support for the new edid ioctlsHans Verkuil1-0/+6
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-08-13[media] v4l: move v4l2 core into a separate directoryMauro Carvalho Chehab1-0/+470
Currently, the v4l2 core is mixed together with other non-core drivers. Move them into a separate directory. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

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