From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 8564E78297; Fri, 16 Aug 2024 09:27:43 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1723800463; cv=none; b=Oqn6ap5cLX2WzIf3qM6OG0Opw335r6J7lndweffjGZtM9TonxgOjtcrUjmMw6BMSCE2257a2BkRMd5mSNrgCV9Zl6nA1h0vk0XtEfkNvUCo7Oy3NN/94CpJLJFj7/1J4gHfGK53inGQ82JTrCo+EWjTu1cKhiwf3p1I8p/N6zAo= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1723800463; c=relaxed/simple; bh=tDR89ak2l2SPfJ+mx0sQVNnqXSp+xVYft90d0/lUyQQ=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=TW9b/sCnxG/laDhU0e8F5cYVu4IYGN0EPdk05y+lz9gCgj9pOfkBO3TcZtPb8/KsYDb6jdCtjmsz8NNIzAoUfJa9//votnJ+Ie2bU+GDtIaeUcgiFom8Vi9WlCveT+yS0yc9lXVPCk/NhoEt9hWfaf9Y5NmsmyLxRA0oX6SzwLU= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=sRwvUPPm; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="sRwvUPPm" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 87492C4AF0E; Fri, 16 Aug 2024 09:27:36 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1723800463; bh=tDR89ak2l2SPfJ+mx0sQVNnqXSp+xVYft90d0/lUyQQ=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=sRwvUPPmh9bXjc46bjyA8Kwopv0dTV9T0zkI3UDuxImvam3FzzI6GPAcLLRpP344b X0I5TIUhUoaFUym2Y+037JUMtUxMml5NrnZ4j0f9yA5xkNuW/LsX01hx7tbrOIXj9g sbtICvo3h9k0FAL6SKgFRtImZLyxm+P/BHr6Tf5PeMXq+ZQfFMtXYTm88cXzgZ52JK pJ6EY2O4kiAAa2LbFWgDJJi6hXweFfYbDTnzzgZLHpdBZNbrZ3WdGdzFv70dFGRhDe Y/1KZFkaA58d1k1FawSOvpDtQJ4Exdlukg6YEqClcEpF5PxP9U/krm5l560tu6gdhk L+9MmbGUwKraw== Message-ID: Date: Fri, 16 Aug 2024 11:27:33 +0200 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v3 RESEND 2/2] drm/bridge: imx: Add i.MX93 parallel display format configuration support To: Liu Ying , devicetree@vger.kernel.org, imx@lists.linux.dev, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org Cc: robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org, shawnguo@kernel.org, s.hauer@pengutronix.de, kernel@pengutronix.de, festevam@gmail.com, andrzej.hajda@intel.com, neil.armstrong@linaro.org, rfoss@kernel.org, Laurent.pinchart@ideasonboard.com, jonas@kwiboo.se, jernej.skrabec@gmail.com, maarten.lankhorst@linux.intel.com, mripard@kernel.org, tzimmermann@suse.de, airlied@gmail.com, daniel@ffwll.ch, peng.fan@nxp.com References: <20240816080933.440594-1-victor.liu@nxp.com> <20240816080933.440594-3-victor.liu@nxp.com> From: Krzysztof Kozlowski Content-Language: en-US Autocrypt: addr=krzk@kernel.org; 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charset=UTF-8 Content-Transfer-Encoding: 7bit On 16/08/2024 10:09, Liu Ying wrote: > NXP i.MX93 mediamix blk-ctrl contains one DISPLAY_MUX register which > configures parallel display format by using the "PARALLEL_DISP_FORMAT" > field. Add a DRM bridge driver to support the display format configuration. > > Signed-off-by: Liu Ying > --- ... > + > +static int imx93_pdfc_bridge_probe(struct platform_device *pdev) > +{ > + struct device *dev = &pdev->dev; > + struct imx93_pdfc *pdfc; > + int ret; > + > + pdfc = devm_kzalloc(dev, sizeof(*pdfc), GFP_KERNEL); > + if (!pdfc) > + return -ENOMEM; > + > + pdfc->regmap = syscon_node_to_regmap(dev->of_node->parent); > + if (IS_ERR(pdfc->regmap)) { > + ret = PTR_ERR(pdfc->regmap); > + if (ret != -EPROBE_DEFER) > + DRM_DEV_ERROR(dev, "failed to get regmap: %d\n", ret); > + return ret; Nope, you just open-coded dev_err_probe. Syntax is - return dev_err_probe(). if you need wrapper for DRM, add such. > + } > + > + pdfc->next_bridge = devm_drm_of_get_bridge(dev, dev->of_node, 1, 0); > + if (IS_ERR(pdfc->next_bridge)) { > + ret = PTR_ERR(pdfc->next_bridge); > + if (ret != -EPROBE_DEFER) > + DRM_DEV_ERROR(dev, "failed to get next bridge: %d\n", ret); > + return ret; Ditto > + } > + ... > +MODULE_DESCRIPTION("NXP i.MX93 parallel display format configuration driver"); > +MODULE_AUTHOR("Liu Ying "); > +MODULE_LICENSE("GPL v2"); > +MODULE_ALIAS("platform:" DRIVER_NAME); Which other driver needs this platform alias? Best regards, Krzysztof