From patchwork Thu Feb 27 18:08:58 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Enric Balletbo i Serra X-Patchwork-Id: 11409151 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 24946924 for ; Thu, 27 Feb 2020 18:10:32 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id F00C5246A1 for ; Thu, 27 Feb 2020 18:10:31 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="Q9hvyXA/" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org F00C5246A1 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=collabora.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=4M8J0oSvxrdqsYPVD1dWlzLa36MufPswk8ovYqPkkQc=; b=Q9hvyXA/QuiHLy E6R6v948uUbbzbhwiaO9sJKECSiEN2R/laa4/9thxPvuIrFS5f0Onk59tBUMVB5TAxrXkwKg/O0xc iEfh/oSuEI8fBTymTpZChgVNQpelRehwyD7JNEz03Za0bWX+CLcTP66Ak5kPsg81TMFP1C1Io3jz9 UDexmQm0U86EOJQkMHQaJxY6mSfNvbddL4TlIglHd/GlokPaX0JBFbHutB8FSF96Wj5Any2L+GzoG p8ZY7sLHOKoIvSCWZPMvoiOHx/m/QEBjX2bZpx6wSpKw3FtzZYJ7hpGOqWZxqdxA/E+CTz4Kc10hr BRbi14UMCTr5S9ZfmJrg==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1j7NcE-0008BO-EO; Thu, 27 Feb 2020 18:10:30 +0000 Received: from bhuna.collabora.co.uk ([46.235.227.227]) by bombadil.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1j7Nb8-000628-Kg; Thu, 27 Feb 2020 18:09:24 +0000 Received: from [127.0.0.1] (localhost [127.0.0.1]) (Authenticated sender: eballetbo) with ESMTPSA id 048CC29640B From: Enric Balletbo i Serra To: robh+dt@kernel.org, mark.rutland@arm.com, ck.hu@mediatek.com, p.zabel@pengutronix.de, airlied@linux.ie, mturquette@baylibre.com, sboyd@kernel.org, ulrich.hecht+renesas@gmail.com, laurent.pinchart@ideasonboard.com Subject: [PATCH v10 5/5] soc / drm: mediatek: Fix mediatek-drm device probing Date: Thu, 27 Feb 2020 19:08:58 +0100 Message-Id: <20200227180858.1514157-6-enric.balletbo@collabora.com> X-Mailer: git-send-email 2.25.0 In-Reply-To: <20200227180858.1514157-1-enric.balletbo@collabora.com> References: <20200227180858.1514157-1-enric.balletbo@collabora.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200227_100922_968618_21EDFB61 X-CRM114-Status: GOOD ( 17.55 ) X-Spam-Score: -0.0 (/) X-Spam-Report: SpamAssassin version 3.4.3 on bombadil.infradead.org summary: Content analysis details: (-0.0 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at https://www.dnswl.org/, no trust [46.235.227.227 listed in list.dnswl.org] -0.0 SPF_PASS SPF: sender matches SPF record -0.0 SPF_HELO_PASS SPF: HELO matches SPF record 0.0 UNPARSEABLE_RELAY Informational: message has unparseable relay lines X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Kate Stewart , Andrew-CT Chen , Minghsiu Tsai , dri-devel@lists.freedesktop.org, Richard Fontana , Collabora Kernel ML , linux-clk@vger.kernel.org, Weiyi Lu , wens@csie.org, linux-arm-kernel@lists.infradead.org, mtk01761 , linux-media@vger.kernel.org, devicetree@vger.kernel.org, frank-w@public-files.de, Seiya Wang , sean.wang@mediatek.com, Houlong Wei , linux-mediatek@lists.infradead.org, hsinyi@chromium.org, Matthias Brugger , Thomas Gleixner , Mauro Carvalho Chehab , Allison Randal , Matthias Brugger , Greg Kroah-Hartman , rdunlap@infradead.org, linux-kernel@vger.kernel.org, Daniel Vetter , matthias.bgg@kernel.org Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org In the actual implementation the same compatible string "mediatek,-mmsys" is used to bind the clock drivers (drivers/soc/mediatek) as well as to the gpu driver (drivers/gpu/drm/mediatek/mtk_drm_drv.c). This ends with the problem that the only probed driver is the clock driver and there is no display at all. In any case having the same compatible string for two drivers is not correct and should be fixed. To fix this, and maintain backward compatibility, we can consider that the mmsys driver is the top-level entry point for the multimedia subsystem, so is not a pure clock controller but a system controller, and the drm driver is instantiated by that MMSYS driver. Signed-off-by: Enric Balletbo i Serra Reviewed-by: CK Hu --- Changes in v10: - Match driver data to get display routing. Changes in v9: - Do not move the display routing from the drm driver (CK) Changes in v8: - New patch introduced in this series. Changes in v7: None drivers/gpu/drm/mediatek/mtk_drm_drv.c | 31 ++++++++++++++++---------- drivers/soc/mediatek/mtk-mmsys.c | 6 +++++ 2 files changed, 25 insertions(+), 12 deletions(-) diff --git a/drivers/gpu/drm/mediatek/mtk_drm_drv.c b/drivers/gpu/drm/mediatek/mtk_drm_drv.c index 02011d3168df..29252fc0aab7 100644 --- a/drivers/gpu/drm/mediatek/mtk_drm_drv.c +++ b/drivers/gpu/drm/mediatek/mtk_drm_drv.c @@ -422,9 +422,21 @@ static const struct of_device_id mtk_ddp_comp_dt_ids[] = { { } }; +static const struct of_device_id mtk_drm_of_ids[] = { + { .compatible = "mediatek,mt2701-mmsys", + .data = &mt2701_mmsys_driver_data}, + { .compatible = "mediatek,mt2712-mmsys", + .data = &mt2712_mmsys_driver_data}, + { .compatible = "mediatek,mt8173-mmsys", + .data = &mt8173_mmsys_driver_data}, + { } +}; + static int mtk_drm_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; + struct device_node *phandle = dev->parent->of_node; + const struct of_device_id *of_id; struct mtk_drm_private *private; struct device_node *node; struct component_match *match = NULL; @@ -443,8 +455,14 @@ static int mtk_drm_probe(struct platform_device *pdev) return -ENODEV; } + of_id = of_match_node(mtk_drm_of_ids, phandle); + if (!of_id) + return -ENODEV; + + private->data = of_id->data; + /* Iterate over sibling DISP function blocks */ - for_each_child_of_node(dev->of_node->parent, node) { + for_each_child_of_node(phandle->parent, node) { const struct of_device_id *of_id; enum mtk_ddp_comp_type comp_type; int comp_id; @@ -576,22 +594,11 @@ static int mtk_drm_sys_resume(struct device *dev) static SIMPLE_DEV_PM_OPS(mtk_drm_pm_ops, mtk_drm_sys_suspend, mtk_drm_sys_resume); -static const struct of_device_id mtk_drm_of_ids[] = { - { .compatible = "mediatek,mt2701-mmsys", - .data = &mt2701_mmsys_driver_data}, - { .compatible = "mediatek,mt2712-mmsys", - .data = &mt2712_mmsys_driver_data}, - { .compatible = "mediatek,mt8173-mmsys", - .data = &mt8173_mmsys_driver_data}, - { } -}; - static struct platform_driver mtk_drm_platform_driver = { .probe = mtk_drm_probe, .remove = mtk_drm_remove, .driver = { .name = "mediatek-drm", - .of_match_table = mtk_drm_of_ids, .pm = &mtk_drm_pm_ops, }, }; diff --git a/drivers/soc/mediatek/mtk-mmsys.c b/drivers/soc/mediatek/mtk-mmsys.c index a8a98777064e..d99c8beb2ed2 100644 --- a/drivers/soc/mediatek/mtk-mmsys.c +++ b/drivers/soc/mediatek/mtk-mmsys.c @@ -377,6 +377,7 @@ static int mtk_mmsys_probe(struct platform_device *pdev) const struct mtk_mmsys_driver_data *data; struct clk_onecell_data *clk_data; struct device *dev = &pdev->dev; + struct platform_device *drm; void __iomem *config_regs; struct resource *mem; int ret; @@ -407,6 +408,11 @@ static int mtk_mmsys_probe(struct platform_device *pdev) if (ret) return ret; + drm = platform_device_register_data(&pdev->dev, "mediatek-drm", + PLATFORM_DEVID_NONE, NULL, 0); + if (IS_ERR(drm)) + return PTR_ERR(drm); + return 0; }