Prevent unloading the framebuffer if it is still in use.
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
If you try to access the video device from within an udev rule,
then you get into a circular locking situation.
Changed the driver to postpone the registration of the devices until
everything else has been fully initialized, so that the newly created
device can be used immediately.
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
Resizing an MPEG 1 stream would cut off the right half of the
image due to a missing divide by 2 in VIDIOC_S_FMT.
Also did some minor cleanup in this part of the code.
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
This patch partially reverts a previous change that caused the
CX2341X_OSD_SET_PIXEL_FORMAT firmware calls to be skipped when the pixel
format of the framebuffer wasn't altered by FBIOPUT_VSCREENINFO.
Unfortunately, another firmware call on the PVR350 sometimes scrambles the
display when trying to adjust the framebuffer settings. This patch re-enables
the CX2341X_OSD_SET_PIXEL_FORMAT calls to try and prevent this from
occurring.
Signed-off-by: Ian Armstrong <ian@iarmst.demon.co.uk>
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
Trying to open the radio when a capture is in progress will make it
impossible to open the radio again since the radio stream wasn't released.
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
We shouldn't dereference "itv" when we know it's NULL...
Spotted by the Coverity checker.
Signed-off-by: Adrian Bunk <bunk@kernel.org>
Reviewed-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
Also fixed a few cases of cut&paste errors where 'buf' would be set to the
first entry in the list prior to be used as the loop iterator. In one case
the value of buf was used before it was changed, but the rest were
unnecessary.
There was one list_for_each+list_entry loop that wasn't changed, since it
depending on the loop iterator being left as NULL if the list was empty.
Signed-off-by: Trent Piepho <xyzzy@speakeasy.org>
CC: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
ivtvfb: replace ivtv_fb prefix to ivtvfb, change warning to info message
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
The convention for framebuffer devices is to call them xxxfb, not xxx-fb.
Conform to this. Also move the ivtvfb.h header to include/linux: it is a
public header. The FBIO_WAITFORVSYNC ioctl is now also defined in the
ivtvfb.h header, no more need to include matroxfb.h for just this ioctl.
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
Besides some VBI cleanups this patch also fixes a subtle problem with the
VBI re-insertion stream where the PIO work handler wasn't called quickly
enough, resulting in occasional corrupt data.
Furthermore the CC output didn't disable CC correctly and at the right time,
causing duplicates to be sent.
An saa7127 fix for VPS output was also added: the wrong data was sent.
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
An udelay of 5 is sufficient for standard speed i2c busses, 10 make it
too slow.
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
Since kzalloc() returns a void pointer, we don't need to cast the
return value in drivers/media/video/ivtv/ivtv-queue.c
Signed-off-by: Jesper Juhl <jesper.juhl@gmail.com>
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
ivtv: set correct pixel format and alpha properties in VIDIOC_G_FBUF
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
Support for V4L2_ENC_CMD_STOP_AT_GOP_END was broken. While the driver
correctly waited for the card to capture until the GOP was complete,
afterwards the driver buffers were just flushed instead of waiting
for the application to read all the pending data.
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
The driver should now pass the 'busy' state of the device to the cx2341x
module whenever controls are set or tried. -EBUSY will be returned if
the device is busy and the user attempts to modify certain 'dangerous'
controls. It concerns controls that change the audio or video
compression mode and bitrates.
The cx88-blackbird and pvrusb2 drivers currently always pass '0' (not busy)
to the cx2341x, effectively keeping the old behavior for now.
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
Changing the VBI format requires a CX2341X_ENC_INITIALIZE_INPUT firmware
call. This can only be done if no capture is in progress. So return
-EBUSY if the encoder is busy.
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
- Always clear when stopping the decoder
- Clear if the filehandle that is being close was used for UDMA_YUV output.
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
Convert the initialization of ivtv_i2c_algo_template to C99-style.
Otherwise a future change to struct i2c_algo_bit_data would break
this code.
Also declared that structure const - it's a template after all.
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
Since at least kernel 2.6.12-rc2, module.h includes moduleparm.h. This
patch removes all occurences of moduleparm.h from drivers/media files.
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
Add VIDIOC_OVERLAY to enable/disable the OSD. Also add the OSD state to the
log status report.
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
The return value of ivtv_udma_fill_sg_list() was changed by the
highmem bugfix, but that return value was still used in ivtv-yuv.c.
Revert to the old return value, but in addition return -1 in case of
a memory allocation error.
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
When trying to DMA userspace buffers to the cx23415 you need to check
whether the page is in highmem. If this is the case, then bounce buffers
have to be used to allow DMA.
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
Serialization is now done on the open/close/ioctl level and also when the
read/write/poll start an encoder/decoder stream.
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
- add FILE debug flag for open/close/read/write/poll.
- show cmd for encoder/decoder command ioctl.
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
Some streams (PCM, VBI decoding) do not need that much memory, so specify
the allocated memory in kB instead of MB to limit memory usage. E.g. 1 MB
is overkill for the VBI decoding stream, 64 kB is enough.
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
The TV output standard was set only on first use, which meant that the saa7127
was set to NTSC until then, leading to flickering on PAL systems.
Since the saa7127 has no firmware it is OK to initialize it immediately.
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
- Give up frame after three retries.
- When the last capture/decode ends, make sure to delete the dma_timer.
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
- Invalid VBI packets should result in an empty VBI frame, not
in an zero-sized frame that causes the reader to incorrectly
return a 0 (EOF) value.
- PIO completion should not reset the sg_pending_size field.
- The DMA offset detection code should be ignored for PIO transfers:
it somehow messes up the data on the card and is not needed anyway
for PIO.
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
It turns out that the cx23415/6 DMA engine cannot do scatter/gather DMA
reliably. Every so often depending on the phase of the moon and your
hardware configuration the cx2341x DMA engine simply chokes on it and
you have to reboot to get it working again.
This change replaced the scatter/gather DMA by single transfers at a time,
where the driver is now responsible for DMA-ing each buffer.
UDMA is still done using scatter/gather DMA, that will be fixed soon.
Many thanks to Mark Bryars <mark.bryars@etvinteractive.com> for discovering
the link between scatter/gather and the DMA timeouts.
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
When there are no more free buffers, then buffers are stolen from the
predma queue. Buffers should be stolen from the head of that queue (which
is where the most recently added buffers are) and all buffers belonging
to a frame should be stolen. Otherwise 'half-frames' would remain in the
queue, which leads to ugly playback and complete sync failure for YUV
buffers.
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
The CX2341X_ENC_INITIALIZE_INPUT firmware call requires careful handling,
otherwise the computer can freeze or the top-third of the screen can start
flickering. This patch ensures that CX2341X_ENC_INITIALIZE_INPUT is called
at the right time and in the right way.
In addition the stop capture handling was improved so that the last pending
DMA transfer is also processed. Otherwise this would be the first data that
arrived when a new capture was started which is not what you want.
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
