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path: root/Documentation/video4linux/v4l2-controls.txt (follow)
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2014-07-17[media] v4l2-controls.txt: update to the new way of accessing controlsHans Verkuil1-23/+38
The way current and new values are accessed has changed. Update the document to bring it up to date with the code. 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>
2014-07-17[media] v4l2-ctrls: use ptrs for all but the s32 typeHans Verkuil1-1/+1
Rather than having two unions for all types just keep 'val' and 'cur.val' and use the p_cur and p_new unions to access all others. The only reason for keeping 'val' and 'cur.val' is that it is used all over, so converting this as well would be a huge job. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
2013-08-18[media] V4L: Add support for integer menu controls with standard menu itemsSylwester Nawrocki1-10/+11
The patch modifies the helper function v4l2_ctrl_new_std_menu to accept integer menu controls with standard menu items. Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Signed-off-by: Arun Kumar K <arun.kk@samsung.com> Acked-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Kamil Debski <k.debski@samsung.com> Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
2013-01-05[media] v4l2-ctrls: add a notify callbackHans Verkuil1-8/+14
Sometimes platform/bridge drivers need to be notified when a control from a sub-device changes value. In order to support this a notify callback was added. [dheitmueller@kernellabs.com: fix merge conflict in v4l2-ctrls.c] Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Devin Heitmueller <dheitmueller@kernellabs.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-10-05[media] media: v4l2-ctrl: add a helper function to add standard control with driver specific menuLad, Prabhakar1-0/+24
Add helper function v4l2_ctrl_new_std_menu_items(), which adds a standard menu control, with driver specific menu. Signed-off-by: Lad, Prabhakar <prabhakar.lad@ti.com> Signed-off-by: Manjunath Hadli <manjunath.hadli@ti.com> Acked-by: Hans Verkuil <hans.verkuil@cisco.com> Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-10-01[media] v4l2-ctrls: add a filter function to v4l2_ctrl_add_handlerHans Verkuil1-1/+5
With a filter function you can control more precisely which controls are added. This is useful in particular for radio device nodes for combined TV/Radio cards where you want to show just the radio-specific controls and not controls like brightness. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-05-14[media] V4L: Add helper function for standard integer menu controlsSylwester Nawrocki1-0/+21
This patch adds v4l2_ctrl_new_int_menu() helper function which can be used in drivers for creating standard integer menu control with driver-specific menu item list. It is similar to v4l2_ctrl_new_std_menu(), except it doesn't have a mask parameter and an additional qmenu parameter allows passing an array of signed 64-bit integers as the menu item list. Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Acked-by: Sakari Ailus <sakari.ailus@iki.fi> Tested-by: Sakari Ailus <sakari.ailus@iki.fi> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-01-16[media] V4L2 Spec: fix extended control documentationHans Verkuil1-21/+0
Update the spec to the behavior implemented by the control framework. This should have been documented long ago but for some reason it was never done. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-09-21[media] v4l2-controls.txt: update auto cluster documentationHans Verkuil1-22/+12
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Acked-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-09-21[media] v4l2-ctrls: replace is_volatile with V4L2_CTRL_FLAG_VOLATILEHans Verkuil1-7/+6
With the new flag there is no need anymore to have a separate is_volatile field. Modify all users to use the new flag. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Acked-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-07-27[media] Documentation: Improve cluster documentation and document the new autoclustersHans Verkuil1-0/+56
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-07-27[media] v4l2-controls.txt: update to latest v4l2-ctrl.c changesHans Verkuil1-9/+4
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-01-19[media] v4l2-ctrls: v4l2_ctrl_handler_setup must set is_new to 1Hans Verkuil1-0/+12
Renamed has_new to is_new. Drivers can use the is_new field to determine if a new value was specified for a control. The v4l2_ctrl_handler_setup() must always set this to 1 since the setup has to force a full update of all controls. Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-08-08V4L/DVB: Documentation: add v4l2-controls.txt documenting the new controls APIHans Verkuil1-0/+648
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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