netdev - Re: [PATCH v3 13/20] drm/rockchip: dw_hdmi: switch to FIELD_PREP

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Message-ID: <18528244.tv2OnDr8pf@phil>
Date: Wed, 27 Aug 2025 09:37:41 +0200
From: Heiko Stuebner <heiko@...ech.de>
To: Yury Norov <yury.norov@...il.com>,
 Rasmus Villemoes <linux@...musvillemoes.dk>,
 Jaehoon Chung <jh80.chung@...sung.com>, Ulf Hansson <ulf.hansson@...aro.org>,
 Shreeya Patel <shreeya.patel@...labora.com>,
 Mauro Carvalho Chehab <mchehab@...nel.org>, Sandy Huang <hjc@...k-chips.com>,
 Andy Yan <andy.yan@...k-chips.com>,
 Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
 Maxime Ripard <mripard@...nel.org>, Thomas Zimmermann <tzimmermann@...e.de>,
 David Airlie <airlied@...il.com>, Simona Vetter <simona@...ll.ch>,
 Vinod Koul <vkoul@...nel.org>, Kishon Vijay Abraham I <kishon@...nel.org>,
 Nicolas Frattaroli <frattaroli.nicolas@...il.com>,
 Liam Girdwood <lgirdwood@...il.com>, Mark Brown <broonie@...nel.org>,
 Jaroslav Kysela <perex@...ex.cz>, Takashi Iwai <tiwai@...e.com>,
 Andrew Lunn <andrew+netdev@...n.ch>, "David S. Miller" <davem@...emloft.net>,
 Eric Dumazet <edumazet@...gle.com>, Jakub Kicinski <kuba@...nel.org>,
 Paolo Abeni <pabeni@...hat.com>, Maxime Coquelin <mcoquelin.stm32@...il.com>,
 Alexandre Torgue <alexandre.torgue@...s.st.com>,
 Shawn Lin <shawn.lin@...k-chips.com>,
 Lorenzo Pieralisi <lpieralisi@...nel.org>,
 Krzysztof Wilczyński <kwilczynski@...nel.org>,
 Manivannan Sadhasivam <mani@...nel.org>, Rob Herring <robh@...nel.org>,
 Bjorn Helgaas <bhelgaas@...gle.com>, Chanwoo Choi <cw00.choi@...sung.com>,
 MyungJoo Ham <myungjoo.ham@...sung.com>,
 Kyungmin Park <kyungmin.park@...sung.com>, Qin Jian <qinjian@...lus1.com>,
 Michael Turquette <mturquette@...libre.com>, Stephen Boyd <sboyd@...nel.org>,
 Nathan Chancellor <nathan@...nel.org>,
 Nick Desaulniers <nick.desaulniers+lkml@...il.com>,
 Bill Wendling <morbo@...gle.com>, Justin Stitt <justinstitt@...gle.com>,
 Nicolas Frattaroli <nicolas.frattaroli@...labora.com>
Cc: kernel@...labora.com, linux-kernel@...r.kernel.org,
 linux-mmc@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
 linux-rockchip@...ts.infradead.org, linux-media@...r.kernel.org,
 dri-devel@...ts.freedesktop.org, linux-phy@...ts.infradead.org,
 linux-sound@...r.kernel.org, netdev@...r.kernel.org,
 linux-stm32@...md-mailman.stormreply.com, linux-pci@...r.kernel.org,
 linux-pm@...r.kernel.org, linux-clk@...r.kernel.org, llvm@...ts.linux.dev,
 Nicolas Frattaroli <nicolas.frattaroli@...labora.com>,
 Cristian Ciocaltea <cristian.ciocaltea@...labora.com>
Subject:
 Re: [PATCH v3 13/20] drm/rockchip: dw_hdmi: switch to FIELD_PREP_WM16* macros

Am Montag, 25. August 2025, 10:28:33 Mitteleuropäische Sommerzeit schrieb Nicolas Frattaroli:
> 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 FIELD_PREP_WM16 or
> FIELD_PREP_WM16_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 FIELD_PREP_WM16/FIELD_PREP_WM16_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.
> 
> Reviewed-by: Cristian Ciocaltea <cristian.ciocaltea@...labora.com>
> Tested-by: Cristian Ciocaltea <cristian.ciocaltea@...labora.com>
> Signed-off-by: Nicolas Frattaroli <nicolas.frattaroli@...labora.com>

Reviewed-by: Heiko Stuebner <heiko@...ech.de>