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mx.zohomail.com; dkim=pass header.i=collabora.com; spf=pass smtp.mailfrom=nicolas.frattaroli@collabora.com; dmarc=pass header.from= DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; t=1763559482; s=zohomail; d=collabora.com; i=nicolas.frattaroli@collabora.com; h=From:From:To:To:Cc:Cc:Subject:Subject:Date:Date:Message-ID:In-Reply-To:References:MIME-Version:Content-Transfer-Encoding:Content-Type:Message-Id:Reply-To; bh=7kLvj5qlOUkKcedzN+9zXzz8KHY8mPvxCmgiQNKASC0=; b=lOK0BGrsyBiEDevslzfJVvrHYzJKW5KQ4sVEUjGezcv3IIJHy5sc4MlGVNfICCIN R0Bhi6yfEfVGmx5g0Y392pEDMHk0run1ePP/ik30HEqOq+cQIV0+Y3+9aOcBibP0RjH aInqlNcei+5GnD4BbDSIMlOsR2qwk/3VOUtRhD1g= Received: by mx.zohomail.com with SMTPS id 1763559480451443.4437908471832; Wed, 19 Nov 2025 05:38:00 -0800 (PST) From: Nicolas Frattaroli To: Harry Wentland , Leo Li , Rodrigo Siqueira , Alex Deucher , Christian =?UTF-8?B?S8O2bmln?= , David Airlie , Simona Vetter , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , Andrzej Hajda , Neil Armstrong , Robert Foss , Laurent Pinchart , Jonas Karlman , Jernej Skrabec , Sandy Huang , Heiko =?UTF-8?B?U3TDvGJuZXI=?= , Andy Yan , Jani Nikula , Rodrigo Vivi , Joonas Lahtinen , Tvrtko Ursulin , Cristian Ciocaltea Cc: kernel@collabora.com, amd-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-rockchip@lists.infradead.org, intel-gfx@lists.freedesktop.org, intel-xe@lists.freedesktop.org Subject: Re: [PATCH v4 06/10] drm/rockchip: dw_hdmi_qp: Set supported_formats platdata Date: Wed, 19 Nov 2025 14:37:51 +0100 Message-ID: <11723230.nUPlyArG6x@workhorse> In-Reply-To: References: <20251117-color-format-v4-0-0ded72bd1b00@collabora.com> <20251117-color-format-v4-6-0ded72bd1b00@collabora.com> MIME-Version: 1.0 Content-Transfer-Encoding: 7Bit Content-Type: text/plain; charset="utf-8" X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20251119_053838_072298_C72B9DB7 X-CRM114-Status: GOOD ( 28.11 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Tuesday, 18 November 2025 21:14:31 Central European Standard Time Cristian Ciocaltea wrote: > On 11/17/25 9:11 PM, Nicolas Frattaroli wrote: > > With the introduction of the supported_formats member in the > > dw-hdmi-qp platform data struct, drivers that have access to this > > information should now set it. > > > > Set it in the rockchip dw_hdmi_qp glue driver, where such a bitmask of > > supported color formats already exists. It just needs to be converted to > > the appropriate HDMI_COLORSPACE_ mask. > > > > This allows this information to be passed down to the dw-hdmi-qp core, > > which sets it in the bridge it creates, and consequently will allow the > > common HDMI bridge code to act on it. > > > > Signed-off-by: Nicolas Frattaroli > > --- > > drivers/gpu/drm/rockchip/dw_hdmi_qp-rockchip.c | 24 ++++++++++++++++++++++++ > > 1 file changed, 24 insertions(+) > > > > diff --git a/drivers/gpu/drm/rockchip/dw_hdmi_qp-rockchip.c b/drivers/gpu/drm/rockchip/dw_hdmi_qp-rockchip.c > > index c9fe6aa3e3e3..7c294751de19 100644 > > --- a/drivers/gpu/drm/rockchip/dw_hdmi_qp-rockchip.c > > +++ b/drivers/gpu/drm/rockchip/dw_hdmi_qp-rockchip.c > > @@ -468,6 +468,28 @@ static const struct of_device_id dw_hdmi_qp_rockchip_dt_ids[] = { > > }; > > MODULE_DEVICE_TABLE(of, dw_hdmi_qp_rockchip_dt_ids); > > > > +static const u32 supported_colorformats = DRM_COLOR_FORMAT_AUTO | > > + DRM_COLOR_FORMAT_RGB444 | > > + DRM_COLOR_FORMAT_YCBCR444; > > + > > +static unsigned int __pure drm_to_hdmi_fmts(const u32 fmt) > > +{ > > + unsigned int res = 0; > > + > > + if (fmt & DRM_COLOR_FORMAT_AUTO) > > + res |= BIT(HDMI_COLORSPACE_RGB); > > + if (fmt & DRM_COLOR_FORMAT_RGB444) > > + res |= BIT(HDMI_COLORSPACE_RGB); > > + if (fmt & DRM_COLOR_FORMAT_YCBCR444) > > + res |= BIT(HDMI_COLORSPACE_YUV444); > > + if (fmt & DRM_COLOR_FORMAT_YCBCR422) > > + res |= BIT(HDMI_COLORSPACE_YUV422); > > + if (fmt & DRM_COLOR_FORMAT_YCBCR420) > > + res |= BIT(HDMI_COLORSPACE_YUV420); > > + > > + return res; > > +} > > + > > static int dw_hdmi_qp_rockchip_bind(struct device *dev, struct device *master, > > void *data) > > { > > @@ -521,6 +543,8 @@ static int dw_hdmi_qp_rockchip_bind(struct device *dev, struct device *master, > > plat_data.phy_data = hdmi; > > plat_data.max_bpc = 10; > > > > + plat_data.supported_formats = drm_to_hdmi_fmts(supported_colorformats); > > Any reason why this cannot be simply set as > > BIT(HDMI_COLORSPACE_RGB) | BIT(HDMI_COLORSPACE_YUV444) | BIT(HDMI_COLORSPACE_YUV422) > > and get rid of the unnecessary conversion? My gut feeling lead me towards trying to have a single source of truth for the supported color formats, but upon further reflection this is indeed way too verbose and lead me to move the supported_colorformats definition into this patch rather than the one where it's needed for registering the property. So I agree with you here and will simplify this by just setting these as you described. Kind regards, Nicolas Frattaroli > > > + > > encoder = &hdmi->encoder.encoder; > > encoder->possible_crtcs = drm_of_find_possible_crtcs(drm, dev->of_node); > > > > > >