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SubjectRe: [PATCH v10 4/4] [media] platform: Add Synopsys DesignWare HDMI RX Controller Driver
On Mon, Dec 11, 2017 at 6:41 PM, Jose Abreu <Jose.Abreu@synopsys.com> wrote:
> This is an initial submission for the Synopsys DesignWare HDMI RX
> Controller Driver. This driver interacts with a phy driver so that
> a communication between them is created and a video pipeline is
> configured.
>
> The controller + phy pipeline can then be integrated into a fully
> featured system that can be able to receive video up to 4k@60Hz
> with deep color 48bit RGB, depending on the platform. Although,
> this initial version does not yet handle deep color modes.
>
> This driver was implemented as a standard V4L2 subdevice and its
> main features are:
> - Internal state machine that reconfigures phy until the
> video is not stable
> - JTAG communication with phy
> - Inter-module communication with phy driver
> - Debug write/read ioctls
>
> Some notes:
> - RX sense controller (cable connection/disconnection) must
> be handled by the platform wrapper as this is not integrated
> into the controller RTL
> - The same goes for EDID ROM's
> - ZCAL calibration is needed only in FPGA platforms, in ASIC
> this is not needed
> - The state machine is not an ideal solution as it creates a
> kthread but it is needed because some sources might not be
> very stable at sending the video (i.e. we must react
> accordingly).
>
> Signed-off-by: Jose Abreu <joabreu@synopsys.com>
> Cc: Joao Pinto <jpinto@synopsys.com>
> Cc: Mauro Carvalho Chehab <mchehab@kernel.org>
> Cc: Hans Verkuil <hans.verkuil@cisco.com>
> Cc: Sylwester Nawrocki <snawrocki@kernel.org>
> Cc: Sakari Ailus <sakari.ailus@iki.fi>
> Cc: Philippe Ombredanne <pombredanne@nexb.com>
> ---
> Changes from v9:
> - Use SPDX License ID (Philippe)

Acked-by: Philippe Ombredanne <pombredanne@nexb.com>

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