From patchwork Tue Dec 17 15:43:32 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: AngeloGioacchino Del Regno X-Patchwork-Id: 13912045 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 gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (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 10B4EE77188 for ; Tue, 17 Dec 2024 15:44:31 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 0B3C210E9F0; Tue, 17 Dec 2024 15:44:29 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=collabora.com header.i=@collabora.com header.b="SvNVIkGL"; dkim-atps=neutral Received: from bali.collaboradmins.com (bali.collaboradmins.com [148.251.105.195]) by gabe.freedesktop.org (Postfix) with ESMTPS id AA61510E9E6 for ; Tue, 17 Dec 2024 15:44:20 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=collabora.com; s=mail; t=1734450259; bh=xvqKAlwxZi5qMu/HhzZvjBB2nmVM7/aMNaTJlpT98iY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=SvNVIkGLkBS5bE7e/Pw4Af1qqvKKE3V0AexhP6DAih7ilYSyGjq9ThGme4gjsRC1g vrME19hUEKWr11FnboIlS3UXfKmbbfRUsU4KN2rwW05hSuUll1GfTS+u2yxZ5u3HLT XbCPSPcykO9kRAX9Gzp3V+bmZkQkRSftW4SwHVBwRQ/hgJ4EuMFtees+9IWLPdhII6 H0D3a1Y044hLsyWaNR84n9V2WkZNYSiVGj3andujZYIFal20ekDGuy6TS/PbFvJN9c f3TWxQalODnkcMZEY78mnX9vBKHHYeNapcSvaQAZH6Iylxu1JOHfB+mWXTFBTh2H2r ULRqAA5KQQhmg== 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 364E917E37CB; Tue, 17 Dec 2024 16:44:18 +0100 (CET) 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 Subject: [PATCH v3 20/33] drm/mediatek: mtk_hdmi: Move CEC device parsing in new function Date: Tue, 17 Dec 2024 16:43:32 +0100 Message-ID: <20241217154345.276919-21-angelogioacchino.delregno@collabora.com> X-Mailer: git-send-email 2.47.0 In-Reply-To: <20241217154345.276919-1-angelogioacchino.delregno@collabora.com> References: <20241217154345.276919-1-angelogioacchino.delregno@collabora.com> MIME-Version: 1.0 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" 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. Signed-off-by: AngeloGioacchino Del Regno --- drivers/gpu/drm/mediatek/mtk_hdmi.c | 84 ++++++++++++++--------------- 1 file changed, 40 insertions(+), 44 deletions(-) diff --git a/drivers/gpu/drm/mediatek/mtk_hdmi.c b/drivers/gpu/drm/mediatek/mtk_hdmi.c index c20d42ec387a..c95c7b55998c 100644 --- a/drivers/gpu/drm/mediatek/mtk_hdmi.c +++ b/drivers/gpu/drm/mediatek/mtk_hdmi.c @@ -1367,24 +1367,16 @@ 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) - return dev_err_probe(dev, -EINVAL, "Failed to find CEC node\n"); + return dev_err_probe(dev, -ENOTSUPP, "Failed to find CEC node\n"); cec_pdev = of_find_device_by_node(cec_np); if (!cec_pdev) { @@ -1393,65 +1385,69 @@ 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; } /*