linux-stable.git/include/media/soc_camera.h, branch linux-3.9.y

[media] soc-camera: split struct soc_camera_link into host and subdevice parts

2013-01-05T03:38:02+00:00

struct soc_camera_link currently contains fields, used both by sensor and
bridge drivers. To make subdevice driver re-use simpler, split it into a
host and a subdevice parts.

Signed-off-by: Guennadi Liakhovetski 
Signed-off-by: Mauro Carvalho Chehab

[media] soc-camera: remove struct soc_camera_device::video_lock

2013-01-05T03:36:23+00:00

Currently soc-camera has a per-device node lock, used for video operations
and a per-host lock for code paths, modifying host's pipeline. Manipulating
the two locks increases complexity and doesn't bring any advantages. This
patch removes the per-device lock and uses the per-host lock for all
operations.

Signed-off-by: Guennadi Liakhovetski 
Signed-off-by: Mauro Carvalho Chehab

[media] soc-camera: properly fix camera probing races

2013-01-05T03:35:35+00:00

The recently introduced host_lock causes lockdep warnings, besides, list
enumeration in scan_add_host() must be protected by holdint the list_lock.
OTOH, holding .video_lock in soc_camera_open() isn't enough to protect
the host during its building of the pipeline, because .video_lock is per
soc-camera device. If, e.g. more than one sensor can be attached to a host
and the user tries to open both device nodes simultaneously, host's .add()
method can be called simultaneously for both sensors. Fix these problems
by holding list_lock instead of .host_lock in scan_add_host() and taking
it shortly at the beginning of soc_camera_open(), and using .host_lock to
protect host's .add() and .remove() operations only.

Signed-off-by: Guennadi Liakhovetski 
Signed-off-by: Mauro Carvalho Chehab

[media] v4l2: make vidioc_s_crop const

2012-09-26T14:02:25+00:00

Write-only ioctls should have a const argument in the ioctl op.
Do this conversion for vidioc_s_crop.
Adding const for write-only ioctls was decided during the 2012 Media Workshop.

Signed-off-by: Hans Verkuil 
Signed-off-by: Mauro Carvalho Chehab

[media] V4L: soc-camera: add selection API host operations

2012-08-15T20:37:39+00:00

Add .get_selection() and .set_selection() soc-camera host driver
operations. Additionally check, that the user is not trying to change the
output sizes during a running capture.

Signed-off-by: Guennadi Liakhovetski 
Signed-off-by: Mauro Carvalho Chehab

[media] soc-camera: Add and use soc_camera_power_[on|off]() helper functions

2012-08-15T20:03:29+00:00

Instead of forcing all soc-camera drivers to go through the mid-layer to
handle power management, create soc_camera_power_[on|off]() functions
that can be called from the subdev .s_power() operation to manage
regulators and platform-specific power handling. This allows non
soc-camera hosts to use soc-camera-aware clients.

Signed-off-by: Laurent Pinchart 
[g.liakhovetski@gmx.de: fix compile breakage]
Signed-off-by: Guennadi Liakhovetski 
Signed-off-by: Mauro Carvalho Chehab

[media] soc-camera: Support user-configurable line stride

2012-05-15T19:12:54+00:00

Add a capabilities field to the soc_camera_host structure to flag hosts
that support user-configurable line strides. soc_camera_try_fmt() then
passes the user-provided bytesperline and sizeimage format fields to
such hosts, and expects the host to check (and fix if needed) the
values.

Signed-off-by: Laurent Pinchart 
[g.liakhovetski@gmx.de: fix a typo in mx2_camera.c]
Signed-off-by: Guennadi Liakhovetski 
Signed-off-by: Mauro Carvalho Chehab

[media] V4L: soc-camera: (cosmetic) use a more explicit name for a host handler

2012-05-15T11:52:49+00:00

Use "enum_framesizes" instead of "enum_fsizes" to more precisely follow
the name of the respective ioctl().

Signed-off-by: Guennadi Liakhovetski 
Reviewed-by: Sergio Aguirre 
Signed-off-by: Mauro Carvalho Chehab

[media] V4L: soc-camera: protect hosts during probing from overzealous user-space

2012-04-26T14:30:12+00:00

If multiple clients are registered on a single camera host interface,
the user-space hot-plug software can try to access the one, that probed
first, before probing of the second one has completed. This can be
handled by individual host drivers, but it is even better to hold back
the user-space until all the probing on this host has completed. This
fixes a race on ecovec with two clients registered on the CEU1 host, which
otherwise triggers a BUG() in sh_mobile_ceu_remove_device().

Signed-off-by: Guennadi Liakhovetski 
Signed-off-by: Mauro Carvalho Chehab

[media] soc-camera: remove redundant parameter from .set_bus_param()

2012-01-06T13:00:23+00:00

The "pixfmt" parameter of the struct soc_camera_host_ops::set_bus_param()
method is redundant, because at the time, when this method is called,
pixfmt is guaranteed to be equal to icd->current_fmt->host_fmt->fourcc.
Remove this parameter and update all drivers accordingly.

Signed-off-by: Guennadi Liakhovetski 
Signed-off-by: Mauro Carvalho Chehab