linux-kernel - Re: [PATCH 4/5] drm/bridge: simple-bridge: Add DPI color encoder support

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Message-ID: <20250304-diamond-toucanet-of-pizza-6faa2d@houat>
Date: Tue, 4 Mar 2025 11:40:11 +0100
From: Maxime Ripard <mripard@...nel.org>
To: Liu Ying <victor.liu@....com>
Cc: dri-devel@...ts.freedesktop.org, devicetree@...r.kernel.org, 
	linux-kernel@...r.kernel.org, robh@...nel.org, krzk+dt@...nel.org, conor+dt@...nel.org, 
	andrzej.hajda@...el.com, neil.armstrong@...aro.org, rfoss@...nel.org, 
	Laurent.pinchart@...asonboard.com, jonas@...boo.se, jernej.skrabec@...il.com, 
	maarten.lankhorst@...ux.intel.com, tzimmermann@...e.de, airlied@...il.com, simona@...ll.ch
Subject: Re: [PATCH 4/5] drm/bridge: simple-bridge: Add DPI color encoder
 support

On Tue, Mar 04, 2025 at 06:15:29PM +0800, Liu Ying wrote:
> A DPI color encoder, as a simple display bridge, converts input DPI color
> coding to output DPI color coding, like Adafruit Kippah DPI hat[1] which
> converts input 18-bit pixel data to 24-bit pixel data(with 2 low padding
> bits in every color component though). Add the DPI color encoder support
> in the simple bridge driver.
> 
> [1] https://learn.adafruit.com/adafruit-dpi-display-kippah-ttl-tft/downloads
> 
> Signed-off-by: Liu Ying <victor.liu@....com>
> ---
>  drivers/gpu/drm/bridge/simple-bridge.c | 104 ++++++++++++++++++++++++-
>  1 file changed, 102 insertions(+), 2 deletions(-)

Same thing, I think it's easy enough to write a transparent bridge to
just put it into another driver.

Maxime

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