From patchwork Mon May 15 09:40:21 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Thomas Zimmermann X-Patchwork-Id: 13241134 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 D920CC7EE26 for ; Mon, 15 May 2023 09:41:05 +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: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:In-Reply-To:References: List-Owner; bh=YUEPKcGpcTdjvNz8Ij/OWnHTwcn+JPjS3vVZ6LuGEfw=; b=OfIH4aExJkD9GO HCHA6mv12hnlRkko4OuwVAv9nj4guP4+WBarvYuLUXmtNl4js0bcswsjvwmns2+BpccAzmp9u1oUm SUL/Fb6RWj9Lkifu4apr053nqm3CBAQNrI3Dl6+2OpSwTapcjAfQAOkUlBZE4HOS8gv0bnI6kN/LK 7pFgYM2IeoO/z/rXwwqdkkEnlb11PbIaqijsFZExkynpoVAjNkA1K31nEoOl+11pGGLv9BffOi4Ff aSksaxdc/bMjbjI5VpWsyALLj5wBuxqFwOiMgLyO88Ggy1i+usTofFh5TKz6BKatje16vYWixIm+G LxVyIzzkWxC+GKSYsvTQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1pyUh8-001ayj-24; Mon, 15 May 2023 09:40:42 +0000 Received: from smtp-out2.suse.de ([2001:67c:2178:6::1d]) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1pyUh5-001aui-0F for linux-arm-kernel@lists.infradead.org; Mon, 15 May 2023 09:40:40 +0000 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-out2.suse.de (Postfix) with ESMTPS id CC1891F749; Mon, 15 May 2023 09:40:34 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_rsa; t=1684143634; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding; bh=gmr4FfaH5fbVmlkPgeABvPLh70AOaXqGDduq6NJ5ewI=; b=HpNO9MAQmtFT0yZbTdZhHZmp8ZPFMHBzlHtwh31/3eOPlc7YuselHO3PrhTKLIIdYrpcc2 yC/MUpPcKq0V3gL1sfNqXEfpioV/utCoqMoBevvXfeJIV3ghSjd6AHvy2XnInEn7rrzxin yDT9gUB2X5QNfk6+Rqi+VQnDwfrpyew= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_ed25519; t=1684143634; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding; bh=gmr4FfaH5fbVmlkPgeABvPLh70AOaXqGDduq6NJ5ewI=; b=4pKrYyAEyEMbX3hdJ4z9QYEPh45rqeWWpG6ZCOLivDWeKEx/er2DoKqzb/RJCcDjiJXzJE pM7snHdKQ6tgHNAg== 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 6EE5513466; Mon, 15 May 2023 09:40:34 +0000 (UTC) Received: from dovecot-director2.suse.de ([192.168.254.65]) by imap2.suse-dmz.suse.de with ESMTPSA id 5OD4GRL+YWTeTwAAMHmgww (envelope-from ); Mon, 15 May 2023 09:40:34 +0000 From: Thomas Zimmermann To: daniel@ffwll.ch, airlied@gmail.com, maarten.lankhorst@linux.intel.com, mripard@kernel.org, javierm@redhat.com, sam@ravnborg.org Cc: dri-devel@lists.freedesktop.org, linux-arm-kernel@lists.infradead.org, linux-samsung-soc@vger.kernel.org, intel-gfx@lists.freedesktop.org, linux-arm-msm@vger.kernel.org, freedreno@lists.freedesktop.org, amd-gfx@lists.freedesktop.org, linux-tegra@vger.kernel.org, Thomas Zimmermann Subject: [PATCH v2 00/12] drm/fbdev: Remove DRM's helpers for fbdev I/O Date: Mon, 15 May 2023 11:40:21 +0200 Message-Id: <20230515094033.2133-1-tzimmermann@suse.de> X-Mailer: git-send-email 2.40.1 MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230515_024039_278491_9A167C93 X-CRM114-Status: GOOD ( 12.59 ) 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 DRM provides a number of wrappers around fbdev cfb_() sys_(), fb_io_() and fb_sys_() helpers. The DRM functions don't provide any additional functionality for most DRM drivers. So remove them and call the fbdev I/O helpers directly. The DRM fbdev I/O wrappers were originally added because does not protect its content with CONFIG_FB. DRM fbdev emulation did not build if the config option had been disabled. This has been fixed. For fbdev-generic and i915, the wrappers added support for damage handling. But this is better handled within the two callers, as each is special in its damage handling. Patch 1 adds several internal Kconfig otpions that DRM drivers (and possibly other fbdev code) will use to select the correct set of I/O helpers. Patches 2 to 9 replace the DRM wrappers in a number of fbdev emulations. Patch 10 exports two helpers for damage handling. Patches 11 and 12 update fbdev-generic and i915 with the help of the exported functions. The patches also remove DRM's fbdev I/O helpers, which are now unused. DRM's fbdev helpers had to select fbdev I/O helpers for I/O and for system memory. Each fbdev emulation now selects the correct helpers for itself. Depending on the selected DRM drivers, kernel builds will now only contain the necessary fbdev I/O helpers and might be slightly smaller in size. v2: * simplify Kconfig handling (Sam) Thomas Zimmermann (12): fbdev: Add Kconfig options to select different fb_ops helpers drm/armada: Use regular fbdev I/O helpers drm/exynos: Use regular fbdev I/O helpers drm/gma500: Use regular fbdev I/O helpers drm/radeon: Use regular fbdev I/O helpers drm/fbdev-dma: Use regular fbdev I/O helpers drm/msm: Use regular fbdev I/O helpers drm/omapdrm: Use regular fbdev I/O helpers drm/tegra: Use regular fbdev I/O helpers drm/fb-helper: Export helpers for marking damage areas drm/fbdev-generic: Implement dedicated fbdev I/O helpers drm/i915: Implement dedicated fbdev I/O helpers drivers/gpu/drm/Kconfig | 10 +- drivers/gpu/drm/armada/Kconfig | 1 + drivers/gpu/drm/armada/armada_fbdev.c | 9 +- drivers/gpu/drm/drm_fb_helper.c | 233 ++------------------- drivers/gpu/drm/drm_fbdev_dma.c | 12 +- drivers/gpu/drm/drm_fbdev_generic.c | 47 ++++- drivers/gpu/drm/exynos/Kconfig | 1 + drivers/gpu/drm/exynos/Makefile | 2 +- drivers/gpu/drm/exynos/exynos_drm_fbdev.c | 10 +- drivers/gpu/drm/gma500/Kconfig | 1 + drivers/gpu/drm/gma500/fbdev.c | 9 +- drivers/gpu/drm/i915/Kconfig | 1 + drivers/gpu/drm/i915/display/intel_fbdev.c | 51 ++++- drivers/gpu/drm/msm/Kconfig | 1 + drivers/gpu/drm/msm/msm_fbdev.c | 12 +- drivers/gpu/drm/omapdrm/Kconfig | 1 + drivers/gpu/drm/omapdrm/omap_fbdev.c | 12 +- drivers/gpu/drm/radeon/Kconfig | 1 + drivers/gpu/drm/radeon/radeon_fbdev.c | 9 +- drivers/gpu/drm/tegra/Kconfig | 1 + drivers/gpu/drm/tegra/fbdev.c | 11 +- drivers/video/fbdev/Kconfig | 21 ++ include/drm/drm_fb_helper.h | 84 +------- 23 files changed, 184 insertions(+), 356 deletions(-) base-commit: 451e49cfbaa90720149e63f4fa9c7824013c783d