From patchwork Wed May 4 11:40:16 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jagan Teki X-Patchwork-Id: 12837724 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 784F1C433F5 for ; Wed, 4 May 2022 11:43:41 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=/+UNjTLhFJxlio1+hUS0M82cRPz5jy/a9ti2VBSaYrE=; b=zNP1Klk8m2CkM2 jvP+TLypuBKO/AO57U4NE2wcwUy0MmM3/BUAuQ6xs55xf3df5tLXoP5lyjVmmEt8si2LEKoNboN0i YFrylgyxbF3SUFdcn/6O/xndvf2VRwpOWc8VTD0SxoCgZZG4egiwimAlrjGBg2pik6FC8zLyMyXEJ ESZLgWCL6SEP8QiZHwamVqVMl594OcCJHNMV/jiwg7z07uiIm0C6oulkYNfbJ/APuAdGenzlw+Kua zwnieDEBww6plFDQRoJti0NHFdnapH0Byz4h/xuJsiTkgtbHuIYRlJGEJt0/62oV/EoCsGp5lL19I YmOnfsdRUXrPvRikoTPQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1nmDOj-00AVbm-Uo; Wed, 04 May 2022 11:42:26 +0000 Received: from mail-pl1-x636.google.com ([2607:f8b0:4864:20::636]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1nmDNv-00AV89-KR for linux-arm-kernel@lists.infradead.org; Wed, 04 May 2022 11:41:37 +0000 Received: by mail-pl1-x636.google.com with SMTP id d17so1202163plg.0 for ; Wed, 04 May 2022 04:41:32 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=amarulasolutions.com; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=zroNIHNyi1xhWUCjMbfGRAX1xVgB1APMgcHSCv64Dcg=; b=GAMchdnOFVBu8MgxuMIcwfoun7timH2lhBD9bi3n1IOZVh9J/WFY63YoebZLARAICK AYqUsCFqKufuSUa14TOerRFX5LcMhnoqguVXcfZtFOoxVYHHExRug9CDoW1Ax0QNtxk+ utEfgZ4g9oFV6hnVUFHf1qb1Tohxqtu2Oj6SA= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=zroNIHNyi1xhWUCjMbfGRAX1xVgB1APMgcHSCv64Dcg=; b=2HXZfBnys5Hq45cYOtrOnhR1QOcIrmQ7i7gsnzdI/w/jP47AvRPvOjRAzp83NvBWBh Mo7z3sFgiWMgLz5rBLXn/epwC9VroAc8YMr0o8J9vfR3iXNoghThJzCBg1r+B1BRFe9i iKM81OOnEZQOll0lUAkG7vQdDYiFWbPqpbnLCc/x7GQGG5wdzOaS25CHmA34kRrbNOVZ 6pDcgA6Yr8PFFLpfvpO1QXPeWKOFYGc+zk6fNTqSFYDCxKlgKDd/O4GDjw6cb5HztUu9 iJQjYPusGJy7VpIz2Zui5y+xp47psAMEa12rvIzogNTs0eysUdbizs7CANbtF3NA+mtC tr/g== X-Gm-Message-State: AOAM532XOcLWry6h62ZWybQFJXSIIHvkaPSMmD5wSMFNFQdQqHYOc6us 8uaHYP7ZROSXX3CK8bnJriSFJYFYfBpWFolS X-Google-Smtp-Source: ABdhPJwEaGjX3j/RzoSectesepakk+UomwdKFJ3YD/G3W/8jIvtg0/ahYwC1KyfyV4iEoDGRkcuAnw== X-Received: by 2002:a17:90a:fa97:b0:1dc:2805:9b0a with SMTP id cu23-20020a17090afa9700b001dc28059b0amr9700771pjb.85.1651664492362; Wed, 04 May 2022 04:41:32 -0700 (PDT) Received: from localhost.localdomain ([183.83.137.38]) by smtp.gmail.com with ESMTPSA id k15-20020aa790cf000000b0050dc7628174sm8027498pfk.78.2022.05.04.04.41.25 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 04 May 2022 04:41:31 -0700 (PDT) From: Jagan Teki To: Andrzej Hajda , Inki Dae , Marek Szyprowski , Joonyoung Shim , Seung-Woo Kim , Kyungmin Park , Frieder Schrempf , Fancy Fang , Tim Harvey , Michael Nazzareno Trimarchi , Adam Ford , Neil Armstrong , Robert Foss , Laurent Pinchart , Tommaso Merciai Cc: Matteo Lisi , dri-devel@lists.freedesktop.org, linux-samsung-soc@vger.kernel.org, linux-arm-kernel@lists.infradead.org, NXP Linux Team , linux-amarula , Jagan Teki Subject: [PATCH v2 07/12] drm: bridge: samsung-dsim: Add module init, exit Date: Wed, 4 May 2022 17:10:16 +0530 Message-Id: <20220504114021.33265-8-jagan@amarulasolutions.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220504114021.33265-1-jagan@amarulasolutions.com> References: <20220504114021.33265-1-jagan@amarulasolutions.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220504_044135_729890_AF953004 X-CRM114-Status: GOOD ( 13.80 ) 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 Add module init and exit functions for the bridge to register and unregister dsi_driver. Exynos drm driver stack will register the platform_driver separately in the common of it's exynos_drm_drv.c including dsi_driver. Register again would return -EBUSY, so return 0 for such cases as dsi_driver is already registered. v2, v1: * none Signed-off-by: Jagan Teki --- drivers/gpu/drm/bridge/samsung-dsim.c | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) diff --git a/drivers/gpu/drm/bridge/samsung-dsim.c b/drivers/gpu/drm/bridge/samsung-dsim.c index 8f9ae16d45bc..b618e52d0ee3 100644 --- a/drivers/gpu/drm/bridge/samsung-dsim.c +++ b/drivers/gpu/drm/bridge/samsung-dsim.c @@ -1740,6 +1740,28 @@ struct platform_driver dsi_driver = { }, }; +static int __init samsung_mipi_dsim_init(void) +{ + int ret; + + ret = platform_driver_register(&dsi_driver); + + /** + * Exynos drm driver stack will register the platform_driver + * separately in the common of it's exynos_drm_drv.c including + * dsi_driver. Register again would return -EBUSY, so return 0 + * for such cases as dsi_driver is already registered. + */ + return ret == -EBUSY ? 0 : ret; +} +module_init(samsung_mipi_dsim_init); + +static void __exit samsung_mipi_dsim_exit(void) +{ + platform_driver_unregister(&dsi_driver); +} +module_exit(samsung_mipi_dsim_exit); + MODULE_AUTHOR("Jagan Teki "); MODULE_DESCRIPTION("Samsung MIPI DSIM controller bridge"); MODULE_LICENSE("GPL");