From patchwork Tue Oct 17 08:09:25 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jeffy Chen X-Patchwork-Id: 10011129 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 0BB9C600CC for ; Tue, 17 Oct 2017 08:11:12 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id ECD83287D1 for ; Tue, 17 Oct 2017 08:11:11 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id E1B26287D3; Tue, 17 Oct 2017 08:11:11 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-4.2 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,RCVD_IN_DNSWL_MED autolearn=unavailable version=3.3.1 Received: from bombadil.infradead.org (bombadil.infradead.org [65.50.211.133]) (using TLSv1.2 with cipher AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id A4CD9287D1 for ; Tue, 17 Oct 2017 08:11:11 +0000 (UTC) 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:MIME-Version:Cc:List-Subscribe: List-Help:List-Post:List-Archive:List-Unsubscribe:List-Id: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=AYkae6OtX7ZLm+BBfbIG3Mln/0aMI2RZtmogqGPG3e4=; b=hqKNvAELdkztuwqaUSgIJwAp09 yC0b491m2VNfxiuOEW8G6La1JFjnegWu6URFbh1P8igvSyvhuPRvU81uiD8sO+J6/aoC68evLBpg1 1zEL4/Y6L2VI0mxdHhgEYR2hqwpBTijCVJVpII9dTo4gyWgKAM5CqA8JWF1rcsNlpZAZ01xfwRfGm pN52pKQTon1vq+/fVEAvFymPk5zBhepL6fQ76CvchbaT/ZjHAFZLyXcp/DqSO7mX4mdRBcvgE/mhA uKz/UkXyw8Jaee2KUollkdMgY9KXM05ICXiOBrgwyR/BeeVD/hyvqZ4e/COAszmm1PSf07lXSN9qS l+5TKYRg==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.87 #1 (Red Hat Linux)) id 1e4Mxy-0007CT-PL; Tue, 17 Oct 2017 08:11:10 +0000 Received: from regular1.263xmail.com ([211.150.99.133]) by bombadil.infradead.org with esmtps (Exim 4.87 #1 (Red Hat Linux)) id 1e4Mxh-0006hR-7q; Tue, 17 Oct 2017 08:10:59 +0000 Received: from jeffy.chen?rock-chips.com (unknown [192.168.167.73]) by regular1.263xmail.com (Postfix) with ESMTP id 576CD8D3D; Tue, 17 Oct 2017 16:10:29 +0800 (CST) X-263anti-spam: KSV:0; X-MAIL-GRAY: 0 X-MAIL-DELIVERY: 1 X-KSVirus-check: 0 X-ABS-CHECKED: 4 Received: from localhost (localhost [127.0.0.1]) by smtp.263.net (Postfix) with ESMTPA id B95E939C; Tue, 17 Oct 2017 16:10:23 +0800 (CST) X-RL-SENDER: jeffy.chen@rock-chips.com X-FST-TO: linux-kernel@vger.kernel.org X-SENDER-IP: 103.29.142.67 X-LOGIN-NAME: jeffy.chen@rock-chips.com X-UNIQUE-TAG: X-ATTACHMENT-NUM: 0 X-SENDER: cjf@rock-chips.com X-DNS-TYPE: 0 Received: from localhost (unknown [103.29.142.67]) by smtp.263.net (Postfix) whith ESMTP id 4603NYR2AQ; Tue, 17 Oct 2017 16:10:29 +0800 (CST) From: Jeffy Chen To: linux-kernel@vger.kernel.org Subject: [RFC PATCH v3 5/5] drm/rockchip: Add device links for master and components Date: Tue, 17 Oct 2017 16:09:25 +0800 Message-Id: <20171017080925.23763-6-jeffy.chen@rock-chips.com> X-Mailer: git-send-email 2.11.0 In-Reply-To: <20171017080925.23763-1-jeffy.chen@rock-chips.com> References: <20171017080925.23763-1-jeffy.chen@rock-chips.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20171017_011053_746261_AFA54047 X-CRM114-Status: UNSURE ( 8.82 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: dmitry.torokhov@gmail.com, heiko@sntech.de, David Airlie , briannorris@chromium.org, rjw@rjwysocki.net, dianders@chromium.org, dri-devel@lists.freedesktop.org, tfiga@chromium.org, linux-rockchip@lists.infradead.org, Jeffy Chen , broonie@kernel.org, seanpaul@chromium.org, linux-arm-kernel@lists.infradead.org, Mark Yao MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP Since we are trying to access components' resources in the master's suspend/resume PM callbacks(e.g. panel), add device links to correct the suspend/resume and shutdown ordering. Signed-off-by: Jeffy Chen --- Changes in v3: None Changes in v2: Use device link to correct the suspend/resume and shutdown ordering, instead of converting rockchip spi's suspend/resume PM callbacks to late suspend/resume PM callbacks. drivers/gpu/drm/rockchip/rockchip_drm_drv.c | 24 +++++++++++++++++++++--- 1 file changed, 21 insertions(+), 3 deletions(-) diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_drv.c b/drivers/gpu/drm/rockchip/rockchip_drm_drv.c index 76d63de5921d..af18967f699b 100644 --- a/drivers/gpu/drm/rockchip/rockchip_drm_drv.c +++ b/drivers/gpu/drm/rockchip/rockchip_drm_drv.c @@ -337,6 +337,8 @@ static struct component_match *rockchip_drm_match_add(struct device *dev) if (!d) break; + + device_link_add(dev, d, DL_FLAG_STATELESS); component_match_add(dev, &match, compare_dev, d); } while (true); } @@ -406,6 +408,7 @@ static int rockchip_drm_platform_of_probe(struct device *dev) static int rockchip_drm_platform_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; + struct device_link *link; struct component_match *match = NULL; int ret; @@ -414,16 +417,31 @@ static int rockchip_drm_platform_probe(struct platform_device *pdev) return ret; match = rockchip_drm_match_add(dev); - if (IS_ERR(match)) - return PTR_ERR(match); + if (IS_ERR(match)) { + ret = PTR_ERR(match); + goto err_cleanup_dev_links; + } - return component_master_add_with_match(dev, &rockchip_drm_ops, match); + ret = component_master_add_with_match(dev, &rockchip_drm_ops, match); + if (ret < 0) + goto err_cleanup_dev_links; + + return 0; +err_cleanup_dev_links: + list_for_each_entry(link, &dev->links.consumers, s_node) + device_link_del(link); + return ret; } static int rockchip_drm_platform_remove(struct platform_device *pdev) { + struct device_link *link; + component_master_del(&pdev->dev, &rockchip_drm_ops); + list_for_each_entry(link, &pdev->dev.links.consumers, s_node) + device_link_del(link); + return 0; }