linux/drivers/media/platform/mem2mem_testdev.c, branch master

[media] mem2mem_testdev: rename to vim2m

2014-10-28T15:49:13Z

This is 1) *much* easier to type, and 2) is consistent with vivid ('vi' for virtual). More of such virtual drivers are planned, so keeping the naming consistent makes sense. Note that the old module name is retained as a module alias. Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab

[media] v4l: Support extending the v4l2_pix_format structure

2014-07-17T15:44:47Z

The v4l2_pix_format structure has no reserved field. It is embedded in the v4l2_framebuffer structure which has no reserved fields either, and in the v4l2_format structure which has reserved fields that were not previously required to be zeroed out by applications. To allow extending v4l2_pix_format, inline it in the v4l2_framebuffer structure, and use the priv field as a magic value to indicate that the application has set all v4l2_pix_format extended fields and zeroed all reserved fields following the v4l2_pix_format field in the v4l2_format structure. The availability of this API extension is reported to userspace through the new V4L2_CAP_EXT_PIX_FORMAT capability flag. Just checking that the priv field is still set to the magic value at [GS]_FMT return wouldn't be enough, as older kernels don't zero the priv field on return. To simplify the internal API towards drivers zero the extended fields and set the priv field to the magic value for applications not aware of the extensions. Signed-off-by: Laurent Pinchart Signed-off-by: Mauro Carvalho Chehab

[media] vb2: stop_streaming should return void

2014-04-23T13:12:51Z

The vb2 core ignores any return code from the stop_streaming op. And there really isn't anything it can do anyway in case of an error. So change the return type to void and update any drivers that implement it. The int return gave drivers the idea that this operation could actually fail, but that's really not the case. The pwc amd sdr-msi3101 drivers both had this construction: if (mutex_lock_interruptible(&s->v4l2_lock)) return -ERESTARTSYS; This has been updated to just call mutex_lock(). The stop_streaming op expects this to really stop streaming and I very much doubt this will work reliably if stop_streaming just returns without really stopping the DMA. Signed-off-by: Hans Verkuil Acked-by: Pawel Osciak Acked-by: Sakari Ailus Signed-off-by: Mauro Carvalho Chehab

[media] mem2mem_testdev: improve field handling

2014-03-11T13:34:56Z

try_fmt should just set field to NONE and not return an error if a different field was passed. buf_prepare should check if the field passed in from userspace has a supported field value. At the moment only NONE is supported and ANY is mapped to NONE. Signed-off-by: Hans Verkuil Signed-off-by: Kamil Debski Signed-off-by: Mauro Carvalho Chehab

[media] mem2mem_testdev: fix field, sequence and time copying

2014-03-11T13:34:36Z

- Set the sequence counters correctly. - Copy timestamps, timecode, relevant buffer flags and field from the received buffer to the outgoing buffer. Signed-off-by: Hans Verkuil Signed-off-by: Kamil Debski Signed-off-by: Mauro Carvalho Chehab

[media] mem2mem_testdev: return pending buffers in stop_streaming()

2014-03-11T13:31:45Z

To keep the vb2 buffer administration in balance stop_streaming() must return any pending buffers to the vb2 framework. Signed-off-by: Hans Verkuil Signed-off-by: Kamil Debski Signed-off-by: Mauro Carvalho Chehab

[media] mem2mem_testdev: add USERPTR support

2014-03-11T13:31:19Z

There is no reason why we shouldn't enable this here. Signed-off-by: Hans Verkuil Signed-off-by: Kamil Debski Signed-off-by: Mauro Carvalho Chehab

[media] mem2mem_testdev: set priv to 0

2014-03-11T13:31:04Z

v4l2_compliance fix. Signed-off-by: Hans Verkuil Signed-off-by: Kamil Debski Signed-off-by: Mauro Carvalho Chehab

[media] mem2mem_testdev: pick default format with try_fmt

2014-03-11T13:30:08Z

This resolves an issue raised by v4l2-compliance: if the given format does not exist, then pick a default format. While there is an exception regarding this for TV capture drivers, this m2m driver should do the right thing. Signed-off-by: Hans Verkuil Signed-off-by: Kamil Debski Signed-off-by: Mauro Carvalho Chehab

[media] mem2mem_testdev: use 40ms default transfer time

2014-03-11T13:29:38Z

The default of 1 second is a bit painful, switch to a 25 Hz framerate. Signed-off-by: Hans Verkuil Signed-off-by: Kamil Debski Signed-off-by: Mauro Carvalho Chehab