[PATCH v2] [media] davinci: vpif: adaptions for DT support

[Sylwester Nawrocki]

On 06/09/2017 06:10 PM, Kevin Hilman wrote:
> The davinci VPIF is a single hardware block, but the existing driver
> is broken up into a common library (vpif.c), output (vpif_display.c) and
> intput (vpif_capture.c).
> 
> When migrating to DT, to better model the hardware, and because
> registers, interrupts, etc. are all common,it was decided to
> have a single VPIF hardware node[1].
> 
> Because davinci uses legacy, non-DT boot on several SoCs still, the
> platform_drivers need to remain.  But they are also needed in DT boot.
> Since there are no DT nodes for the display/capture parts in DT
> boot (there is a single node for the parent/common device) we need to
> create platform_devices somewhere to instansiate the platform_drivers.
> 
> When VPIF display/capture are needed for a DT boot, the VPIF node
> will have endpoints defined for its subdevs.  Therefore, vpif_probe()
> checks for the presence of endpoints, and if detected manually creates
> the platform_devices for the display and capture platform_drivers.
> 
> [1] Documentation/devicetree/bindings/media/ti,da850-vpif.txt
> 
> Signed-off-by: Kevin Hilman <khilman at baylibre.com>

Reviewed-by: Sylwester Nawrocki <s.nawrocki at samsung.com>


-- 
Regards,
Sylwester