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path: root/drivers/media/video/cx18/cx18-streams.c
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2009-06-16V4L/DVB (11864): cx18: Complete support for Sliced and Raw VBI for 625 line ↵Andy Walls
systems Finish changes for sliced and raw VBI for 625 line systems. Tested with VPS and WSS being emitted by a PVR-350 in field 1 lines 16 and 23. Signed-off-by: Andy Walls <awalls@radix.net> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2009-06-16V4L/DVB (11863): cx18: Initial attempt to get sliced VBI working for 625 ↵Andy Walls
line systems Initial changes to get sliced VBI for 625 line system working. This is patch is untested. Signed-off-by: Andy Walls <awalls@radix.net> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2009-06-16V4L/DVB (11619): cx18: Simplify the work handler for outgoing mailbox commandsAndy Walls
Simplify the way outgoing work handler gets scheduled to send empty buffers back to the firmware for use. Also reduced the memory required for scheduling this outgoing work, by using a single, per stream work object. Signed-off-by: Andy Walls <awalls@radix.net> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2009-06-16V4L/DVB (11618): cx18: Convert per stream mutex locks to per queue spin locksAndy Walls
To avoid sleeps in providing buffers to user space and in handling incoming buffers from the capture unit, converted the per stream mutex for locking queues to 3 spin locks. There is now a spin lock per queue to increase concurrency when moving buffers around. Also simplified queue manipulations and buffer handling of incoming buffers of data from the capture unit. Signed-off-by: Andy Walls <awalls@radix.net> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2009-06-16V4L/DVB (11616): cx18: Add a work queue for deferring empty buffer handoffs ↵Andy Walls
to the firmware This change defers sending all CX18_CPU_DE_SET_MDL commands, for a stream with an ongoing capture, by adding a work queue to handle sending such commands when needed. This prevents any sleeps, caused by notifying the firmware of new usable buffers, when a V4L2 application read() is being satisfied or when an incoming buffer is processed by the cx18-NN-in work queue thread. Signed-off-by: Andy Walls <awalls@radix.net> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2009-03-30V4L/DVB (10854): cx18: Correct comments about vertical and horizontal ↵Andy Walls
blanking timings This change only affects comments. Signed-off-by: Andy Walls <awalls@radix.net> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2009-03-30V4L/DVB (10759): cx18: Convert GPIO connected functions to act as ↵Andy Walls
v4l2_subdevices Convert GPIO line functions, such a audio routing and device resets, to v4l2_subdevices. This essentially completes the conversion of cx18 to the v4l2_device/v4l2_subdevice framework. No regression testing has taken place as of yet. Also an ivtv legacy bug with GPIO mux routing and going to/from radio mode was commented, but not fixed. Signed-off-by: Andy Walls <awalls@radix.net> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2009-03-30V4L/DVB (10757): cx18, v4l2-chip-ident: Finish conversion of AV decoder core ↵Andy Walls
to v4l2_subdev Added a new chip identifer to v4l2-chip-ident for the integrated A/V broadcast decoder core internal to the CX23418. Completed separation and encapsulation of the A/V decoder core interface as a v4l2_subdevice. The cx18 driver now compiles and links again. Signed-off-by: Andy Walls <awalls@radix.net> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2009-03-30V4L/DVB (10756): cx18: Slim down instance handling, build names from ↵Andy Walls
v4l2_device.name Convert card instance handling to a lighter weight mechanism like ivtv. Also convert name strings and debug messages to use v4l2_device.name. Signed-off-by: Andy Walls <awalls@radix.net> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2009-03-30V4L/DVB (10446): cx18: Finally get sliced VBI working - for 525 line 60 Hz ↵Andy Walls
systems at least Sliced VBI, in the manner that ivtv implements it as a separate data stream, now works for 525 line 60 Hz systems like NTSC-M. It may work for 625 line 50 Hz systems, but I have more engineering work to do, to verify it is operating properly. Sliced data insertion into the MPEG PS should be working, but is untested. Signed-off-by: Andy Walls <awalls@radix.net> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2009-03-30V4L/DVB (10443): cx18: Use correct line counts per field in firmware API callAndy Walls
The driver was incorrectly setting 0 line counts in a firmware API call to set the maximum amount of lines per field. Signed-off-by: Andy Walls <awalls@radix.net> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2009-03-30V4L/DVB (10442): cx18: Fixes for enforcing when Encoder Raw VBI params can ↵Andy Walls
be set The Encoder will only allow the Raw VBI parameters, along with a number of other API parameters, to take effect when no analog captures are in progress. These parameters must be set before the first analog capture starts, be it MPEG, VBI, YUV, etc., and cannot be changed until the last one stops. It is not obvious to me what capture channel API parameters are shared and which ones must be set per capture channel, so set them all for every analog capture channel start up. This fixes the driver so that VBI capture can be started up after the MPEG capture is going. Signed-off-by: Andy Walls <awalls@radix.net> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2009-03-30V4L/DVB (10439): cx18: Clean-up and enable sliced VBI handlingAndy Walls
Removed legacy ivtv state variables, added comments, and cleaned up sliced VBI related code. Enabled sliced VBI. Signed-off-by: Andy Walls <awalls@radix.net> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2009-03-30V4L/DVB (10280): cx18: Rename structure members: dev to pci_dev and v4l2dev ↵Andy Walls
to video_dev Renamed structure member name to be more specific to type in anticipation of updating to the v4l2_device/v4l2_subdev framework. Too many objects named "dev" and /v4l2_\{0,1\}dev/ would be to confusing. Signed-off-by: Andy Walls <awalls@radix.net> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2009-01-02V4L/DVB (10135): v4l2: introduce v4l2_file_operations.Hans Verkuil
Introduce a struct v4l2_file_operations for v4l2 drivers. Remove the unnecessary inode argument. Move compat32 handling (and llseek) into the v4l2-dev core: this is now handled in the v4l2 core and no longer in the drivers themselves. Note that this changeset reverts an earlier patch that changed the return type of__video_ioctl2 from int to long. This change will be reinstated later in a much improved version. Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2008-12-30V4L/DVB (9894): cx18: Use a known open task handle when setting stream ↵Andy Walls
CX2341x parameters cx18: Use a known open task handle when setting stream CX2341x parameters Sometimes, we might only have VBI or YUV stream open instead of an MPEG stream. Let's make sure we use a valid task handle to perform the CX2341x control settings. Signed-off-by: Andy Walls <awalls@radix.net> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2008-12-30V4L/DVB (9893): cx18: Convert some list manipulations to emphasize entries ↵Andy Walls
not lists Signed-off-by: Andy Walls <awalls@radix.net> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2008-12-30V4L/DVB (9891): cx18 Replace magic number 63 with CX18_MAX_FW_MDLS_PER_STREAMAndy Walls
Removed magic number that referred to firmware limit on the number of MDLs the firmware can maintain for any stream at any one time. Signed-off-by: Andy Walls <awalls@radix.net> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2008-12-30V4L/DVB (9806): cx18: Enable raw VBI captureAndy Walls
A combined authorship patch from Hans Verkuil and Andy Walls. Raw VBI can now be captured but requires a video capture to be in progress as well. Signed-off-by: Andy Walls <awalls@radix.net> Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2008-12-30V4L/DVB (9805): cx18: Port fix for raw/sliced VBI mixup from ivtv and cx25840Andy Walls
This is a port of the fixes Hans Verkuil made for ivtv/cx25840: The service_set field was used to determine whether raw or sliced VBI was desired. This is incorrect since it is perfectly valid to select sliced VBI with a service_set of 0. Instead the driver should check on VIDIOC_S_FMT whether the type field matches the raw or sliced VBI type. Updated the cx18 driver accordingly, including an additional check in cx18_start_v4l2_encode_stream() that didn't exist in ivtv. Signed-off-by: Andy Walls <awalls@radix.net> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2008-12-30V4L/DVB (9804): cx18: Avoid making firmware API calls with the queue lock heldAndy Walls
cx18: Avoid making firmware API calls with the queue lock held. The source of MPEG strem corruption when not holding the queue lock was found to be that the MPEG buffer could be retrieved by the user app before it was sync'ed for the host cpu. Incoming buffers are now sync'ed before being put on q_full and releasing the queue lock. We can thus avoid the sometimes lengthy call to the firmware for CPU_DE_SET_MDL while holding the queue lock, so we can get better performance. Signed-off-by: Andy Walls <awalls@radix.net> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2008-12-30V4L/DVB (9802): cx18: Add module parameters for finer control over buffer ↵Andy Walls
allocations cx18: Add module parameters for finer control over buffer allocations. User now has the option of setting smaller buffers to get lower latency transfers from the encoder. User can also now set the number of buffers used for a stream explicitly. Signed-off-by: Andy Walls <awalls@radix.net> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2008-12-30V4L/DVB (9801): cx18: Allow more than 63 capture buffers in rotation per streamAndy Walls
cx18: Allow more than 63 capture buffers in rotation per stream. Implement q_busy to hold buffers the firmware has for use. q_free holds truly unused buffers in a pool. New buffers are given to the firmware as soon as the firmware returns one, if there are any to give to the firmware. Signed-off-by: Andy Walls <awalls@radix.net> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2008-12-30V4L/DVB (9800): cx18: Eliminate q_io from stream buffer handlingAndy Walls
Eliminate q_io from stream buffer handling in anticipation of upcoming changes in buffer handling. q_io was a holdover from ivtv and it's function in cx18 was trivial and not necessary. We just push things back onto the front of q_full now, instead of maintaining a 1 buffer q_io queue. Signed-off-by: Andy Walls <awalls@radix.net> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2008-12-30V4L/DVB (9728): cx18: Copyright attribution update for files modified by awallsAndy Walls
Add copyright attribution for files modified by awalls in 2008 Signed-off-by: Andy Walls <awalls@radix.net> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2008-12-30V4L/DVB (9722): cx18: Convert per stream queue spinlocks into mutexesAndy Walls
Convert the per stream queue spinlocks into mutexes. All queue manipulation happens via the work queue or system calls into the driver, and not in an interrupt context. This reduces the amout of time the cx18 driver keeps interrupts disabled. Signed-off-by: Andy Walls <awalls@radix.net> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2008-12-30V4L/DVB (9720): cx18: Major rewrite of interrupt handling for incoming ↵Andy Walls
mailbox processing A major rewrite of interrupt handling for incoming mailbox processing, to split the timing critical steps from the the deferrable steps as the sending XPU on the CX23418 will time out and overwrite our incoming mailboxes rather quickly. Setup a pool of work "order forms" for the irq handler to send jobs to the new work handler routine which uses the kernel default work queue to do the deferrable work. Started optimizing some of the cx18-io calls as they are now the low hanging fruit for recoving microseconds back from the timeline. Future optimizations will get rid of mmio read retries, mmio stats logging, and combine smaller functions in the irq path into the larger ones to save ~2 us each. Signed-off-by: Andy Walls <awalls@radix.net> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2008-12-30V4L/DVB (9592): cx18: Use default kernel work queue; fix streaming flag for ↵Andy Walls
work handler cx18: Use default kernel work queue; fix streaming flag for work handler. Eliminate cx18 specific work queue and use the kernel default work queue. Fixed the F_STREAMING_FLAG for the TS stream so cx18_dvb_work_handler() can know when it is not safe to send MDLs to the firmware. Signed-off-by: Andy Walls <awalls@radix.net> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2008-10-21V4L/DVB (9299): cx18: Don't mask many real init error codes by mapping them ↵Andy Walls
to ENOMEM Changes to let error return codes bubble up to the user visible error message on card initialization. A number of them were being remapped to ENOMEM when no memory or array resource shortage existed. That hampered diagnosis of user trouble reports. Signed-off-by: Andy Walls <awalls@radix.net> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2008-10-12V4L/DVB (9133): v4l: disconnect kernel number from minorHans Verkuil
The v4l core creates four different video devices (video, vbi, radio, vtx) and each has its own range of minor numbers. However, modern devices keep increasing the number of devices that they need so a maximum of 64 video devices will not be enough in the future. In addition this scheme makes it very hard to add new device types. This patch disconnects the kernel number allocation (e.g. video0, video1, etc.) from the actual minor number (just pick the first free minor). This allows for much more flexibility in the future. However, it does require the use of udev. For those who cannot use udev a new CONFIG option was created that changes the allocation scheme back to the old behavior. Thanks to Greg KH for suggesting this approach during the 2008 LPC. In addition, several bugs were fixed in the ivtv and cx18 drivers: these drivers try to allocate specific kernel numbers but that scheme contained a bug which caused what should have been e.g. video17 to appear as e.g. video2. Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2008-10-12V4L/DVB (8913): cx18: Create cx18_ specific wrappers for all pci mmio ↵Andy Walls
accessesors. cx18: Create cx18_ specific wrappers for all pci mmio accessesors. This is a first step in instrumenting all CX23418 PCI bus IO, to debug problems with accessing the CX23418's PCI memory mapped IO. Signed-off-by: Andy Walls <awalls@radix.net> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2008-10-12V4L/DVB (8774): cx18: Have CX23418 release buffers at end of capture.Andy Walls
cx18: Have CX23418 release buffers at end of capture. The CX23418 reuses task handles so we need to have it release the buffers associated with a task handle at the end of a capture. If we don't, buffer ids used for one type of stream in the driver (MPEG, TS, PCM), could be used for another type of stream by the CX23418, if a previously used handle is assigned to a different type of stream. The driver would drop valid buffers when this happened. Signed-off-by: Andy Walls <awalls@radix.net> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2008-10-12V4L/DVB (8773): cx18: Fix cx18_find_handle() and add error checkingAndy Walls
cx18: Fix cx18_find_handle() and add error checking. cx18_find_handle() did not find a good task handle and would use the invalid task handle under common conditions. Added a define for the invalid task handle and added error checking as well. Signed-off-by: Andy Walls <awalls@radix.net> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2008-10-12V4L/DVB (8770): cx18: get rid of ununsed buffers stolen fieldAndy Walls
cx18: get rid of ununsed buffers stolen field. It's an unused holdover from ivtv. Signed-off-by: Andy Walls <awalls@radix.net> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2008-07-27V4L/DVB (8523): v4l2-dev: remove unused type and type2 field from video_deviceHans Verkuil
The type and type2 fields were unused and so could be removed. Instead add a vfl_type field that contains the type of the video device. Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-07-23V4L/DVB (8428): videodev: rename 'dev' to 'parent'Hans Verkuil
The field 'dev' is not the video device, but the parent of the video device. Rename accordingly. Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-07-20V4L/DVB (8414): videodev/cx18: fix get_index bug and error-handling lock-upsHans Verkuil
Fix a bug in get_index that was introduced earlier. Also fix two error handling lock-ups in videodev and cx18 that where found thanks to that bug. Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-07-20V4L/DVB (8104): cx18/ivtv: ioctl debugging improvementsHans Verkuil
Completely rely on the video_ioctl2 debugging facilities rather than doing it ourselves. Fill in some missing fields in ivtv with VIDIOC_G_FBUF. Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-07-20V4L/DVB (8082): cx18: convert to video_ioctl2()Andy Walls
cx18: convert driver to use video_ioctl2(). Pushed down ioctl debug messages and priority checks as well. Still left serialization lock in place for now. #if 0'ed out sliced vbi ioctl code for now. Patch heavily based on similar changes made to ivtv by Hans Verkuil. Signed-off-by: Andy Walls <awalls@radix.net> Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-06-05V4L/DVB (7964): cx18 iomem annotationsAl Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-06-05V4L/DVB (7931): cx18: allow for simultaneous digital and analog captureHans Verkuil
The HVR-1600 can do both analog and digital capture at the same time. Due to a driver bug -EBUSY would be returned when attempting to setup an analog capture while a digital capture was already in progress. Separate the two internally. Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-06-05V4L/DVB (7885): ivtv/cx18: add compat_ioctl entriesHans Verkuil
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-05-14V4L/DVB (7854): cx18/ivtv: improve and fix out-of-memory handlingHans Verkuil
- don't show kernel backtrace when the allocation of the buffers fails: the normal ivtv/cx18 messages are clear enough and the backtrace scares users. - fix cleanup after the buffer allocation fails (caused kernel panic). Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2008-04-29V4L/DVB (7786): cx18: new driver for the Conexant CX23418 MPEG encoder chipHans Verkuil
Many thanks to Steve Toth from Hauppauge and Nattu Dakshinamurthy from Conexant for their support. I am in particular thankful to Hauppauge since without their help this driver would not exist. It should also be noted that Steve did the work to get the DVB part up and running. Thank you! Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Steven Toth <stoth@hauppauge.com> Signed-off-by: Michael Krufky <mkrufky@linuxtv.org> Signed-off-by: G. Andrew Walls <awalls@radix.net> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
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