Instead of allocating and coping from __user, do it using
one atomic call. That makes the code simpler.
Found by coccinelle.
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
Those non-static functions aren't used anywhere yet. Comment them
while they're unused.
Solves the following warnings:
drivers/media/platform/vivid/vivid-vid-out.c:1120:5: warning: no previous prototype for 'vivid_vid_out_g_edid' [-Wmissing-prototypes]
int vivid_vid_out_g_edid(struct file *file, void *_fh,
^
drivers/media/platform/vivid/vivid-vid-out.c:1152:5: warning: no previous prototype for 'vivid_vid_out_s_edid' [-Wmissing-prototypes]
int vivid_vid_out_s_edid(struct file *file, void *_fh,
^
Cc: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
Update the Kconfig and Makefile files so this driver can be compiled.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
This fixes a compilation error with allyesconfig:
drivers/media/platform/exynos-gsc/built-in.o: In function `get_format':
(.text+0x12f5): multiple definition of `get_format'
drivers/media/platform/vivid/built-in.o:(.text+0x4bf4): first defined here
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
This adds support for an SDR capture device. It generates simple
sine/cosine waves. The code for that has been contributed by
Antti.
Signed-off-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
This adds radio receiver and transmitter support. Part of that is common
to both and so is placed in the radio-common source.
These drivers also support RDS. In order to generate valid RDS data a
simple RDS generator is implemented in rds-gen.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
The test patterns for video capture are generated by this code. All patterns
are precalculated taking into account colorspace information, pixel and video
aspect ratios and scaling information.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
In order to test capture and output overlays a simple framebuffer
device is created. It's bare bone, but it does the job.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
Add the kthread handlers for video/vbi capture and video/vbi output.
These carefully control the rate at which frames are generated (video
capture) and accepted (video output). While the short-term jitter is
around the order of a jiffie, in the long term the rate matches the
configured framerate exactly.
The capture thread handler also takes care of the video looping and
of capture and overlay support. This is probably the most complex part
of this driver due to the many combinations of crop, compose and scaling
on the input and output, and the blending that has to be done if
overlay support is enabled as well.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
This adds support for VBI capture (raw and sliced) and VBI output
(raw and sliced) to the vivid driver. In addition a VBI generator
is added that generates simple VBI data in either sliced or raw
format.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
This adds the ioctl and vb2 queue support for video capture and output.
Part of this is common to both, so that is placed in a vid-common source.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
The vivid-ctrls code sets up and processes the various V4L2 controls
that are needed by this driver.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
This is the core driver code that creates all the driver instances
and all the configured devices.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
