From patchwork Tue Jul 27 18:27:11 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Thomas Zimmermann X-Patchwork-Id: 12403403 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.5 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id EA110C43216 for ; Tue, 27 Jul 2021 18:27:37 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id BBFCB60F8F for ; Tue, 27 Jul 2021 18:27:37 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org BBFCB60F8F Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=suse.de Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 1A9AE6EA98; Tue, 27 Jul 2021 18:27:30 +0000 (UTC) Received: from smtp-out1.suse.de (smtp-out1.suse.de [195.135.220.28]) by gabe.freedesktop.org (Postfix) with ESMTPS id 476E36EA98; Tue, 27 Jul 2021 18:27:27 +0000 (UTC) Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by smtp-out1.suse.de (Postfix) with ESMTPS id BD52C22237; Tue, 27 Jul 2021 18:27:25 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_rsa; t=1627410445; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=RbBfL4mCTjt0RtM9rcPnqtOKzHPQr0ry5imZlRlAO48=; b=xUJvzwt1aqVfdnP7e6n9jHDh5bJCuVbKL5suy5GWaHc4O7kMRwVxWJ5G3hB/ey8/so52i6 UbaYx7sGgxxAMTcsToqK5xpMqrUOpPZ39KM19xLG4TWSaa2S8+KbjEBl0Tfw4vtB8PkBQQ uor/N0XCVw05ycpCaQvOhmLCad6K8c4= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_ed25519; t=1627410445; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=RbBfL4mCTjt0RtM9rcPnqtOKzHPQr0ry5imZlRlAO48=; b=vXERzI5KPDUe9Sf+lTt1cRBXWjh0B8kqdRJrL6TKmnyTTZwgL26Kh8X5mwg9sWKzHTcFno 8HNKFkfUNNHgUJBg== Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by imap2.suse-dmz.suse.de (Postfix) with ESMTPS id 2CD4213B86; Tue, 27 Jul 2021 18:27:25 +0000 (UTC) Received: from dovecot-director2.suse.de ([192.168.254.65]) by imap2.suse-dmz.suse.de with ESMTPSA id 0L35CQ1QAGGwGQAAMHmgww (envelope-from ); Tue, 27 Jul 2021 18:27:25 +0000 From: Thomas Zimmermann To: daniel@ffwll.ch, airlied@linux.ie, alexander.deucher@amd.com, christian.koenig@amd.com, liviu.dudau@arm.com, brian.starkey@arm.com, sam@ravnborg.org, bbrezillon@kernel.org, nicolas.ferre@microchip.com, maarten.lankhorst@linux.intel.com, mripard@kernel.org, stefan@agner.ch, alison.wang@nxp.com, patrik.r.jakobsson@gmail.com, anitha.chrisanthus@intel.com, robdclark@gmail.com, edmund.j.dea@intel.com, sean@poorly.run, shawnguo@kernel.org, s.hauer@pengutronix.de, kernel@pengutronix.de, jyri.sarha@iki.fi, tomba@kernel.org Subject: [PATCH 04/14] drm/fsl-dcu: Convert to Linux IRQ interfaces Date: Tue, 27 Jul 2021 20:27:11 +0200 Message-Id: <20210727182721.17981-5-tzimmermann@suse.de> X-Mailer: git-send-email 2.32.0 In-Reply-To: <20210727182721.17981-1-tzimmermann@suse.de> References: <20210727182721.17981-1-tzimmermann@suse.de> 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: , Cc: linux-arm-msm@vger.kernel.org, dri-devel@lists.freedesktop.org, amd-gfx@lists.freedesktop.org, Thomas Zimmermann , freedreno@lists.freedesktop.org, linux-arm-kernel@lists.infradead.org Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" Drop the DRM IRQ midlayer in favor of Linux IRQ interfaces. DRM's IRQ helpers are mostly useful for UMS drivers. Modern KMS drivers don't benefit from using it. DRM IRQ callbacks are now being called directly or inlined. Signed-off-by: Thomas Zimmermann --- drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_drv.c | 78 +++++++++++++---------- 1 file changed, 46 insertions(+), 32 deletions(-) diff --git a/drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_drv.c b/drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_drv.c index 7528e8a2d359..660fe573db96 100644 --- a/drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_drv.c +++ b/drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_drv.c @@ -23,7 +23,6 @@ #include #include #include -#include #include #include #include @@ -51,7 +50,7 @@ static const struct regmap_config fsl_dcu_regmap_config = { .volatile_reg = fsl_dcu_drm_is_volatile_reg, }; -static void fsl_dcu_irq_uninstall(struct drm_device *dev) +static void fsl_dcu_irq_reset(struct drm_device *dev) { struct fsl_dcu_drm_device *fsl_dev = dev->dev_private; @@ -59,6 +58,45 @@ static void fsl_dcu_irq_uninstall(struct drm_device *dev) regmap_write(fsl_dev->regmap, DCU_INT_MASK, ~0); } +static irqreturn_t fsl_dcu_drm_irq(int irq, void *arg) +{ + struct drm_device *dev = arg; + struct fsl_dcu_drm_device *fsl_dev = dev->dev_private; + unsigned int int_status; + int ret; + + ret = regmap_read(fsl_dev->regmap, DCU_INT_STATUS, &int_status); + if (ret) { + dev_err(dev->dev, "read DCU_INT_STATUS failed\n"); + return IRQ_NONE; + } + + if (int_status & DCU_INT_STATUS_VBLANK) + drm_handle_vblank(dev, 0); + + regmap_write(fsl_dev->regmap, DCU_INT_STATUS, int_status); + + return IRQ_HANDLED; +} + +static int fsl_dcu_irq_install(struct drm_device *dev, unsigned int irq) +{ + if (irq == IRQ_NOTCONNECTED) + return -ENOTCONN; + + fsl_dcu_irq_reset(dev); + + return request_irq(irq, fsl_dcu_drm_irq, 0, dev->driver->name, dev); +} + +static void fsl_dcu_irq_uninstall(struct drm_device *dev) +{ + struct fsl_dcu_drm_device *fsl_dev = dev->dev_private; + + fsl_dcu_irq_reset(dev); + free_irq(fsl_dev->irq, dev); +} + static int fsl_dcu_load(struct drm_device *dev, unsigned long flags) { struct fsl_dcu_drm_device *fsl_dev = dev->dev_private; @@ -73,13 +111,13 @@ static int fsl_dcu_load(struct drm_device *dev, unsigned long flags) ret = drm_vblank_init(dev, dev->mode_config.num_crtc); if (ret < 0) { dev_err(dev->dev, "failed to initialize vblank\n"); - goto done; + goto done_vblank; } - ret = drm_irq_install(dev, fsl_dev->irq); + ret = fsl_dcu_irq_install(dev, fsl_dev->irq); if (ret < 0) { dev_err(dev->dev, "failed to install IRQ handler\n"); - goto done; + goto done_irq; } if (legacyfb_depth != 16 && legacyfb_depth != 24 && @@ -90,11 +128,11 @@ static int fsl_dcu_load(struct drm_device *dev, unsigned long flags) } return 0; -done: +done_irq: drm_kms_helper_poll_fini(dev); drm_mode_config_cleanup(dev); - drm_irq_uninstall(dev); +done_vblank: dev->dev_private = NULL; return ret; @@ -106,41 +144,17 @@ static void fsl_dcu_unload(struct drm_device *dev) drm_kms_helper_poll_fini(dev); drm_mode_config_cleanup(dev); - drm_irq_uninstall(dev); + fsl_dcu_irq_uninstall(dev); dev->dev_private = NULL; } -static irqreturn_t fsl_dcu_drm_irq(int irq, void *arg) -{ - struct drm_device *dev = arg; - struct fsl_dcu_drm_device *fsl_dev = dev->dev_private; - unsigned int int_status; - int ret; - - ret = regmap_read(fsl_dev->regmap, DCU_INT_STATUS, &int_status); - if (ret) { - dev_err(dev->dev, "read DCU_INT_STATUS failed\n"); - return IRQ_NONE; - } - - if (int_status & DCU_INT_STATUS_VBLANK) - drm_handle_vblank(dev, 0); - - regmap_write(fsl_dev->regmap, DCU_INT_STATUS, int_status); - - return IRQ_HANDLED; -} - DEFINE_DRM_GEM_CMA_FOPS(fsl_dcu_drm_fops); static const struct drm_driver fsl_dcu_drm_driver = { .driver_features = DRIVER_GEM | DRIVER_MODESET | DRIVER_ATOMIC, .load = fsl_dcu_load, .unload = fsl_dcu_unload, - .irq_handler = fsl_dcu_drm_irq, - .irq_preinstall = fsl_dcu_irq_uninstall, - .irq_uninstall = fsl_dcu_irq_uninstall, DRM_GEM_CMA_DRIVER_OPS, .fops = &fsl_dcu_drm_fops, .name = "fsl-dcu-drm",