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path: root/drivers/media/v4l2-core/videobuf2-core.c (follow)
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2013-03-05[media] vb2: Add support for non monotonic timestampsKamil Debski1-2/+6
Not all drivers use monotonic timestamps. This patch adds a way to set the timestamp type per every queue. In addition, set proper timestamp type in drivers that I am sure that use either MONOTONIC or COPY timestamps. Other drivers will correctly report UNKNOWN timestamp type instead of assuming that all drivers use monotonic timestamps. Signed-off-by: Kamil Debski <k.debski@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Reviewed-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Acked-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-02-05[media] videobuf2: don't return POLLERR when only polling for eventsHans Verkuil1-0/+5
If you only poll for events, then vb2_poll will return POLLPRI | POLLERR if no streaming is in progress. That's not right, it's perfectly valid to poll just for events. Cc: Pawel Osciak <pawel@osciak.com> Cc: Marek Szyprowski <m.szyprowski@samsung.com> Cc: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-01-24Merge branch 'v4l_for_linus' into staging/for_v3.9Mauro Carvalho Chehab1-1/+3
* v4l_for_linus: (464 commits) [media] uvcvideo: Set error_idx properly for S_EXT_CTRLS failures [media] uvcvideo: Cleanup leftovers of partial revert [media] uvcvideo: Return -EACCES when trying to set a read-only control Linux 3.8-rc3 mm: reinstante dropped pmd_trans_splitting() check cred: Remove tgcred pointer from struct cred drm/ttm: fix fence locking in ttm_buffer_object_transfer ARM: clps711x: Fix bad merge of clockevents setup ARM: highbank: save and restore L2 cache and GIC on suspend ARM: highbank: add a power request clear ARM: highbank: fix secondary boot and hotplug ARM: highbank: fix typos with hignbank in power request functions ARM: dts: fix highbank cpu mpidr values ARM: dts: add device_type prop to cpu nodes on Calxeda platforms drm/prime: drop reference on imported dma-buf come from gem xen/netfront: improve truesize tracking ARM: mx5: Fix MX53 flexcan2 clock ARM: OMAP2+: am33xx-hwmod: Fix wrongly terminated am33xx_usbss_mpu_irqs array sctp: fix Kconfig bug in default cookie hmac selection EDAC: Cleanup device deregistering path ... Conflicts: drivers/media/pci/dm1105/dm1105.c drivers/media/platform/soc_camera/mx2_camera.c
2013-01-06[media] v4l: vb2: Set data_offset to 0 for single-plane output buffersLaurent Pinchart1-1/+3
Single-planar V4L2 buffers are converted to multi-planar vb2 buffers with a single plane when queued. The plane data_offset field is not available in the single-planar API and must be set to 0 for all output buffers. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Acked-by: Marek Szyprowski <m.szyprowski@samsung.com> Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-12-21[media] v4l: Tell user space we're using monotonic timestampsSakari Ailus1-4/+6
Set buffer timestamp flags for videobuf, videobuf2 and drivers that use neither. Signed-off-by: Sakari Ailus <sakari.ailus@iki.fi> Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Acked-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-11-25[media] v4l: vb2: add buffer exporting via dmabufTomasz Stanislawski1-0/+83
This patch adds extension to videobuf2-core. It allow to export an mmap buffer as a DMABUF file descriptor. Signed-off-by: Tomasz Stanislawski <t.stanislaws@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Acked-by: Hans Verkuil <hans.verkuil@cisco.com> Tested-by: Mauro Carvalho Chehab <mchehab@redhat.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-11-25[media] v4l: vb2: add prepare/finish callbacks to allocatorsMarek Szyprowski1-0/+11
This patch adds support for prepare/finish callbacks in VB2 allocators. These callback are used for buffer flushing. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Acked-by: Hans Verkuil <hans.verkuil@cisco.com> Tested-by: Mauro Carvalho Chehab <mchehab@redhat.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-11-25[media] v4l: vb2: add support for shared buffer (dma_buf)Sumit Semwal1-3/+203
This patch adds support for DMABUF memory type in videobuf2. It calls relevant APIs of dma_buf for v4l reqbuf / qbuf / dqbuf operations. For this version, the support is for videobuf2 as a user of the shared buffer; so the allocation of the buffer is done outside of V4L2. [A sample allocator of dma-buf shared buffer is given at [1]] [1]: Rob Clark's DRM: https://github.com/robclark/kernel-omap4/commits/drmplane-dmabuf [original work in the PoC for buffer sharing] Signed-off-by: Tomasz Stanislawski <t.stanislaws@samsung.com> Signed-off-by: Sumit Semwal <sumit.semwal@ti.com> Signed-off-by: Sumit Semwal <sumit.semwal@linaro.org> Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Acked-by: Hans Verkuil <hans.verkuil@cisco.com> Tested-by: Mauro Carvalho Chehab <mchehab@redhat.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-10-05[media] videobuf2-core: fill in length field for multiplanar buffersHans Verkuil1-0/+1
length should be set to num_planes in __fill_v4l2_buffer(). That way the caller knows how many planes there are in the buffer. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-10-05[media] videobuf2-core: move plane verification out of __fill_v4l2/vb_bufferHans Verkuil1-40/+38
The plane verification should be done before actually queuing or dequeuing buffers, so move it out of __fill_v4l2_buffer and __fill_vb_buffer and call it as a separate step. This also makes it possible to change the return type of __fill_v4l2/vb_buffer to void. The dqbuf case took some special care: before removing a buffer from the done_list you have to verify that the receiving v4l2_buffer has enough room for all the planes. The number of planes can differ between buffers due to the fact that buffers for other formats can be prepared using VIDIOC_PREPARE_BUF. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Reviewed-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Tested-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-09-27[media] videobuf2-core: Replace BUG_ON and return an error at vb2_queue_init()Ezequiel Garcia1-8/+11
This replaces BUG_ON() calls with WARN_ON(), and returns EINVAL if some parameter is NULL, as suggested by Jonathan and Mauro. The BUG_ON() call is too drastic to be used in this case. See the full discussion here: http://www.spinics.net/lists/linux-media/msg52462.html Signed-off-by: Ezequiel Garcia <elezegarcia@gmail.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-09-26[media] vb2: fix wrong owner checkHans Verkuil1-2/+2
Check against q->fileio to see if the queue owner should be set or not. The former check against the return value of read or write is wrong, since read/write can return an error, even if the queue is in streaming mode. For example, EAGAIN when in non-blocking mode. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-08-13[media] v4l: move v4l2 core into a separate directoryMauro Carvalho Chehab1-0/+2380
Currently, the v4l2 core is mixed together with other non-core drivers. Move them into a separate directory. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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