USERPTR buffer support is provided by the videobuf2 framework.
Signed-off-by: NPhilipp Zabel <p.zabel@pengutronix.de>
Acked-by: NJavier Martin <javier.martin@vista-silicon.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

Add a 1 second timeout for each PIC_RUN command to the CODA. In
case it locks up, stop all queues and dequeue remaining buffers.
Signed-off-by: NPhilipp Zabel <p.zabel@pengutronix.de>
Tested-by: NJavier Martin <javier.martin@vista-silicon.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

Determining the next free instance just by incrementing and decrementing
an instance counter does not work: if there are two instances opened,
0 and 1, and instance 0 is released, the next call to coda_open will
create a new instance with index 1, but instance 1 is already in use.
Instead, scan a bitfield of active instances to determine the first
free instance index.
Signed-off-by: NPhilipp Zabel <p.zabel@pengutronix.de>
Tested-by: NJavier Martin <javier.martin@vista-silicon.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

job_ready is supposed to signal whether a context is ready to be
added to the job queue, not whether the CODA is ready to run it
immediately.
Calling v4l2_m2m_job_finish at the end of coda_irq_handler already
guarantees that the coda is ready when v4l2-mem2mem eventually tries
to run the next queued job.
Signed-off-by: NPhilipp Zabel <p.zabel@pengutronix.de>
Tested-by: NJavier Martin <javier.martin@vista-silicon.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

Some codecs running on CODA need internal framebuffers for reference and
reconstructed frames. Allocate them separately, and do not use the input
vb2_buffers: those will be handed off to userspace regularly, and there
is no way to signal to the CODA which of the registered framebuffers are
off limits. As a consequence, userspace is now free to choose the number
of v4l2 buffers.
This patch also includes the code to set up the parameter buffer for
CODA7 and above with 64-bit AXI bus width.
Signed-off-by: NPhilipp Zabel <p.zabel@pengutronix.de>
Reviewed-by: NJavier Martin <javier.martin@vista-silicon.com>
Tested-by: NJavier Martin <javier.martin@vista-silicon.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

This uses the ARCH_MXC specific iram_alloc API to allocate a work
buffer in the SoC's on-chip SRAM and sets up the AXI_SRAM_USE
register. In the future, the allocation will be converted to use
the genalloc API.
Signed-off-by: NPhilipp Zabel <p.zabel@pengutronix.de>
Tested-by: NJavier Martin <javier.martin@vista-silicon.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

Signed-off-by: NPhilipp Zabel <p.zabel@pengutronix.de>
Tested-by: NJavier Martin <javier.martin@vista-silicon.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

Add support for loading a raw firmware with 16-bit chars ordered in
little-endian 64-bit words, corresponding to the memory access pattern
of CODA7 and above: When writing the boot code into the code download
register, the chars have to be reordered back.
Signed-off-by: NPhilipp Zabel <p.zabel@pengutronix.de>
Tested-by: NJavier Martin <javier.martin@vista-silicon.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

New mem-to-mem video drivers should use V4L2_CAP_VIDEO_M2M capability, rather
than ORed V4L2_CAP_VIDEO_CAPTURE and V4L2_CAP_VIDEO_OUTPUT flags, as outlined
in commit a1367f1b.
Signed-off-by: NSylwester Nawrocki <sylvester.nawrocki@gmail.com>
Acked-by: NJavier Martin <javier.martin@vista-silicon.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

Signed-off-by: NHans Verkuil <hans.verkuil@cisco.com>
Acked-by: NSylwester Nawrocki <s.nawrocki@samsung.com>
Acked-by: NSakari Ailus <sakari.ailus@iki.fi>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

queue_init() is always called by v4l2_m2m_ctx_init(), which allocates
a context struct v4l2_m2m_ctx with kzalloc.
Therefore, there is no need to clear vb2_queue src/dst structs.
Signed-off-by: NEzequiel Garcia <elezegarcia@gmail.com>
Acked-by: NJavier Martin <javier.martin@vista-silicon.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

Signed-off-by: NRichard Zhao <richard.zhao@freescale.com>
Acked-by: NJavier Martin <javier.martin@vista-silicon.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

The commit 98d7bbb9 changed *of_device_id.data to const
which introduced warnings in various places that have mostly
been fixed. This patch fixes one such warning by introducing
two const qualifiers.

GCC warning:
drivers/media/platform/coda.c:1785:16: warning:
        assignment discards ‘const’ qualifier
        from pointer target type [enabled by default]
Signed-off-by: NEmil Goode <emilgoode@gmail.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

The remaining drivers are mostly platform drivers. Name the
dir to reflect it.

It makes sense to latter break it into a few other dirs.
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

Coda is a range of video codecs from Chips&Media that
support H.264, H.263, MPEG4 and other video standards.

Currently only support for the codadx6 included in the
i.MX27 SoC is added. H.264 and MPEG4 video encoding
are the only supported capabilities by now.

[mchehab@redhat.com: Add missing include linux/of.h]
Signed-off-by: NJavier Martin <javier.martin@vista-silicon.com>
Reviewed-by: Philipp Zabel<p.zabel@pengutronix.de>
Reviewed-by: NSylwester Nawrocki <s.nawrocki@samsung.com>
Acked-by: NHans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>