Re: [PATCH v3 06/32] [media] coda: Add encoder/decoder support for CODA960

[Robert Schwebel <r.schwebel@pengutronix.de>]

Hi Mauro,

On Mon, Jul 21, 2014 at 04:01:28PM -0300, Mauro Carvalho Chehab wrote:
> > This patch adds support for the CODA960 VPU in Freescale i.MX6 SoCs.
> > 
> > It enables h.264 and MPEG4 encoding and decoding support. Besides the usual
> > register shifting, the CODA960 gains frame memory control and GDI registers
> > that are set up for linear mapping right now, needs ENC_PIC_SRC_INDEX to be
> > set beyond the number of internal buffers for some reason, and has subsampling
> > buffers that need to be set up. Also, the work buffer size is increased to
> > 80 KiB.
> > 
> > The CODA960 firmware spins if there is not enough input data in the bitstream
> > buffer. To make it continue, buffers need to be copied into the bitstream as
> > soon as they are queued. As the bitstream fifo is written into from two places,
> > it must be protected with a mutex. For that, using a threaded interrupt handler
> > is necessary.
> > 
> > Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
> > ---
> 
> ...
> 
> > +	[CODA_IMX6Q] = {
> > +		.firmware   = "v4l-coda960-imx6q.bin",
> > +		.product    = CODA_960,
> > +		.codecs     = coda9_codecs,
> > +		.num_codecs = ARRAY_SIZE(coda9_codecs),
> > +	},
> > +	[CODA_IMX6DL] = {
> > +		.firmware   = "v4l-coda960-imx6dl.bin",
> > +		.product    = CODA_960,
> > +		.codecs     = coda9_codecs,
> > +		.num_codecs = ARRAY_SIZE(coda9_codecs),
> > +	},
> 
> Where are those firmware files available?

Freescale currently distributes the firmware with their multimedia
packages, but in header hex array form; we are trying to find a proper
solution (hopefully by using the linux firmware repository) for
mainline.

The Freescale kernel people are currently discussing this internally
with their legal folks, see this discussion:

http://www.spinics.net/lists/linux-media/msg78273.html

rsc
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