linux-kernel - Re: [PATCH 13/20] drm/rockchip: dw_hdmi: switch to HWORD

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Message-ID: <c8e3081f-cd0c-48c0-8934-bd81fd681943@collabora.com>
Date: Fri, 13 Jun 2025 13:15:15 +0300
From: Cristian Ciocaltea <cristian.ciocaltea@...labora.com>
To: Nicolas Frattaroli <nicolas.frattaroli@...labora.com>,
 Yury Norov <yury.norov@...il.com>,
 Rasmus Villemoes <linux@...musvillemoes.dk>,
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Cc: kernel@...labora.com, linux-kernel@...r.kernel.org,
 linux-mmc@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
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Subject: Re: [PATCH 13/20] drm/rockchip: dw_hdmi: switch to HWORD_UPDATE*
 macros

Hi Nicolas,

On 6/12/25 9:56 PM, Nicolas Frattaroli wrote:
> The era of hand-rolled HIWORD_UPDATE macros is over, at least for those
> drivers that use constant masks.
> 
> Remove this driver's very own HIWORD_UPDATE macro, and replace all
> instances of it with equivalent instantiations of HWORD_UPDATE or
> HWORD_UPDATE_CONST, depending on whether it's in an initializer.
> 
> This gives us better error checking, and a centrally agreed upon
> signature for this macro, to ease in code comprehension.
> 
> Because HWORD_UPDATE/HWORD_UPDATE_CONST shifts the value to the mask
> (like FIELD_PREP et al do), a lot of macro instantiations get easier to
> read.
> 
> This was tested on an RK3568 ODROID M1, as well as an RK3399 ROCKPro64.
> 
> Signed-off-by: Nicolas Frattaroli <nicolas.frattaroli@...labora.com>

This again LGTM and I could verify the RK3568 related bits on my Radxa
ROCK 3A board.

Reviewed-by: Cristian Ciocaltea <cristian.ciocaltea@...labora.com>
Tested-by: Cristian Ciocaltea <cristian.ciocaltea@...labora.com>

Cheers,
Cristian