From patchwork Wed Apr 9 13:13:07 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: AngeloGioacchino Del Regno X-Patchwork-Id: 14044684 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id E8202C369A1 for ; Wed, 9 Apr 2025 13:46:17 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:Cc:To:From: Reply-To:Content-Type:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=eB+1ZOiOGiXJAl0G0wA6gcJWif3Ym1f36CfqJMEkjOY=; b=Ptcu8UkV75sDxy876i+wXQE23l cr/KmCK6XeFLA54NSpTMt7VRJ6XP/cX6Xw3+FBQvoDmML2sqwDgrRUkl6RjDk6Kiv9pXWG2udjQOe hU7K9BblH3joHaQLnr1zzHv9wICArFAtX1P2zUtbN3jjiNYOi+5aQKZpyPkFG5C9qtQlYFKjKcTG2 fKADumjrfeFuzu5HucB/YxzNceJoyi39YHh+3AtsKqCYpyqF2N1EaIGH7jfVmCMtgRuVsnWwayOBf ikEIkrbWU5asnbsiAAwgXRZimRGthQhxxMyy01ifHI4JP4EilAgiMyU6/vblLxXf26cA7RBbI3QBm S12Qco6g==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1u2Vkj-00000007LIE-3xau; Wed, 09 Apr 2025 13:46:05 +0000 Received: from bali.collaboradmins.com ([2a01:4f8:201:9162::2]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1u2VFP-00000007FLc-16uX; Wed, 09 Apr 2025 13:13:44 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=collabora.com; s=mail; t=1744204422; bh=VjTubEKnC3REcYXg2vWGEZf4WxjlOwLmFXJEKR6q6bg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=TUg3c36tPXoj7PcPT92pK/m/L3a9vtsPkHn4VihuaW8eraz75bx5CuchB38kAz5q1 MxQYhGqAqJvfDcPywjyhqkMEp33Hv+6tUl1hpMRt6iaP3XbLL3j1YyGFAY/fYMWHjP r0JKNvOq3GDXdQY7vL8+3ek2ychBJPigep3wShLwUqc0a1FG0ZIO2fijU3zpeIUcbj HwOZRQariu4ILe2/MBKNleoql+C7BGHtAnTD0X5T8lQJD3B2JIU9TjZVp5NwfEWkyZ 3Lx2cssH8eoRw2WMVVLcOlpPtYfCeRofojEHos2x6dN41UsL9lwKm1fLybId3vX8kj eDhKvYCC6A7oA== Received: from IcarusMOD.eternityproject.eu (2-237-20-237.ip236.fastwebnet.it [2.237.20.237]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) (Authenticated sender: kholk11) by bali.collaboradmins.com (Postfix) with ESMTPSA id 7A11E17E14EF; Wed, 9 Apr 2025 15:13:40 +0200 (CEST) From: AngeloGioacchino Del Regno To: chunkuang.hu@kernel.org Cc: p.zabel@pengutronix.de, airlied@gmail.com, simona@ffwll.ch, maarten.lankhorst@linux.intel.com, mripard@kernel.org, tzimmermann@suse.de, robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org, matthias.bgg@gmail.com, angelogioacchino.delregno@collabora.com, ck.hu@mediatek.com, jitao.shi@mediatek.com, jie.qiu@mediatek.com, junzhi.zhao@mediatek.com, dri-devel@lists.freedesktop.org, linux-mediatek@lists.infradead.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, kernel@collabora.com, dmitry.baryshkov@linaro.org, lewis.liao@mediatek.com, ives.chenjh@mediatek.com, tommyyl.chen@mediatek.com, jason-jh.lin@mediatek.com Subject: [PATCH v8 12/23] drm/mediatek: mtk_hdmi: Move CEC device parsing in new function Date: Wed, 9 Apr 2025 15:13:07 +0200 Message-ID: <20250409131318.108690-13-angelogioacchino.delregno@collabora.com> X-Mailer: git-send-email 2.49.0 In-Reply-To: <20250409131318.108690-1-angelogioacchino.delregno@collabora.com> References: <20250409131318.108690-1-angelogioacchino.delregno@collabora.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250409_061343_456062_E89A387A X-CRM114-Status: GOOD ( 15.66 ) 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 Move the CEC device parsing logic to a new function called mtk_hdmi_get_cec_dev(), and move the parsing action to the end of mtk_hdmi_dt_parse_pdata(), allowing to remove gotos in this function, reducing code size and improving readability. Reviewed-by: CK Hu Signed-off-by: AngeloGioacchino Del Regno --- drivers/gpu/drm/mediatek/mtk_hdmi.c | 82 ++++++++++++++--------------- 1 file changed, 39 insertions(+), 43 deletions(-) diff --git a/drivers/gpu/drm/mediatek/mtk_hdmi.c b/drivers/gpu/drm/mediatek/mtk_hdmi.c index 66f0bdcbf091..e1e4fe427bf7 100644 --- a/drivers/gpu/drm/mediatek/mtk_hdmi.c +++ b/drivers/gpu/drm/mediatek/mtk_hdmi.c @@ -1357,20 +1357,12 @@ static const struct drm_bridge_funcs mtk_hdmi_bridge_funcs = { .edid_read = mtk_hdmi_bridge_edid_read, }; -static int mtk_hdmi_dt_parse_pdata(struct mtk_hdmi *hdmi, - struct platform_device *pdev) +static int mtk_hdmi_get_cec_dev(struct mtk_hdmi *hdmi, struct device *dev, struct device_node *np) { - struct device *dev = &pdev->dev; - struct device_node *np = dev->of_node; - struct device_node *remote, *i2c_np; struct platform_device *cec_pdev; - struct regmap *regmap; + struct device_node *cec_np; int ret; - ret = mtk_hdmi_get_all_clk(hdmi, np); - if (ret) - return dev_err_probe(dev, ret, "Failed to get clocks\n"); - /* The CEC module handles HDMI hotplug detection */ cec_np = of_get_compatible_child(np->parent, "mediatek,mt8173-cec"); if (!cec_np) @@ -1384,65 +1376,69 @@ static int mtk_hdmi_dt_parse_pdata(struct mtk_hdmi *hdmi, return -EPROBE_DEFER; } of_node_put(cec_np); - hdmi->cec_dev = &cec_pdev->dev; /* * The mediatek,syscon-hdmi property contains a phandle link to the * MMSYS_CONFIG device and the register offset of the HDMI_SYS_CFG * registers it contains. */ - regmap = syscon_regmap_lookup_by_phandle(np, "mediatek,syscon-hdmi"); - ret = of_property_read_u32_index(np, "mediatek,syscon-hdmi", 1, - &hdmi->sys_offset); - if (IS_ERR(regmap)) - ret = PTR_ERR(regmap); - if (ret) { - dev_err_probe(dev, ret, - "Failed to get system configuration registers\n"); - goto put_device; - } - hdmi->sys_regmap = regmap; + hdmi->sys_regmap = syscon_regmap_lookup_by_phandle(np, "mediatek,syscon-hdmi"); + if (IS_ERR(hdmi->sys_regmap)) + return PTR_ERR(hdmi->sys_regmap); + + ret = of_property_read_u32_index(np, "mediatek,syscon-hdmi", 1, &hdmi->sys_offset); + if (ret) + return dev_err_probe(dev, ret, + "Failed to get system configuration registers\n"); + + hdmi->cec_dev = &cec_pdev->dev; + return 0; +} + +static int mtk_hdmi_dt_parse_pdata(struct mtk_hdmi *hdmi, + struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + struct device_node *np = dev->of_node; + struct device_node *remote, *i2c_np; + int ret; + + ret = mtk_hdmi_get_all_clk(hdmi, np); + if (ret) + return dev_err_probe(dev, ret, "Failed to get clocks\n"); hdmi->regs = device_node_to_regmap(dev->of_node); - if (IS_ERR(hdmi->regs)) { - ret = PTR_ERR(hdmi->regs); - goto put_device; - } + if (IS_ERR(hdmi->regs)) + return PTR_ERR(hdmi->regs); remote = of_graph_get_remote_node(np, 1, 0); - if (!remote) { - ret = -EINVAL; - goto put_device; - } + if (!remote) + return -EINVAL; if (!of_device_is_compatible(remote, "hdmi-connector")) { hdmi->next_bridge = of_drm_find_bridge(remote); if (!hdmi->next_bridge) { dev_err(dev, "Waiting for external bridge\n"); of_node_put(remote); - ret = -EPROBE_DEFER; - goto put_device; + return -EPROBE_DEFER; } } i2c_np = of_parse_phandle(remote, "ddc-i2c-bus", 0); of_node_put(remote); - if (!i2c_np) { - ret = dev_err_probe(dev, -EINVAL, "No ddc-i2c-bus in connector\n"); - goto put_device; - } + if (!i2c_np) + return dev_err_probe(dev, -EINVAL, "No ddc-i2c-bus in connector\n"); hdmi->ddc_adpt = of_find_i2c_adapter_by_node(i2c_np); of_node_put(i2c_np); - if (!hdmi->ddc_adpt) { - ret = dev_err_probe(dev, -EINVAL, "Failed to get ddc i2c adapter by node\n"); - goto put_device; - } + if (!hdmi->ddc_adpt) + return dev_err_probe(dev, -EINVAL, "Failed to get ddc i2c adapter by node\n"); + + ret = mtk_hdmi_get_cec_dev(hdmi, dev, np); + if (ret) + return ret; return 0; -put_device: - put_device(hdmi->cec_dev); - return ret; } /*