From patchwork Mon May 22 12:21:28 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Thomas Zimmermann X-Patchwork-Id: 685838 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 8D28BC7EE2D for ; Mon, 22 May 2023 12:25:41 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230375AbjEVMZk (ORCPT ); Mon, 22 May 2023 08:25:40 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56762 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233986AbjEVMYg (ORCPT ); Mon, 22 May 2023 08:24:36 -0400 Received: from smtp-out1.suse.de (smtp-out1.suse.de [195.135.220.28]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 79FC135A1; Mon, 22 May 2023 05:22:35 -0700 (PDT) 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 5A67C21BDE; Mon, 22 May 2023 12:21:42 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_rsa; t=1684758102; 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=zaTjRgfMLlRIsB0CCzFeZYVFV+JrVqY7WkSEoCzv47o=; b=UHpUG3/eGABMoqviRaxJUYzWa0yHnAv0swjZHZxZPazgM5QFzYUSd9H/jRcErRWNCV9nbx LfAnYKqCYZRDwjFLmKCVCVoq8hcV1iuFfgaR9+uPeM3Yx5Qt8hZdDGVGQGefzSU7oblNKg /lm+3RtzhMpuijNw+UmsgNN9bIbfgtE= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_ed25519; t=1684758102; 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=zaTjRgfMLlRIsB0CCzFeZYVFV+JrVqY7WkSEoCzv47o=; b=SmfA33Jlmp+bZsRAaD3iVkitSXNUN5GAVClcBNU2YpzMJ7OhT42v4j2cAB5oWCh2EHIiMZ BIBS+pESsUoWZKDQ== 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 0D81E13776; Mon, 22 May 2023 12:21:42 +0000 (UTC) Received: from dovecot-director2.suse.de ([192.168.254.65]) by imap2.suse-dmz.suse.de with ESMTPSA id sYdZAlZea2RYVAAAMHmgww (envelope-from ); Mon, 22 May 2023 12:21:42 +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 v3 00/12] drm/fbdev: Remove DRM's helpers for fbdev I/O Date: Mon, 22 May 2023 14:21:28 +0200 Message-Id: <20230522122140.30131-1-tzimmermann@suse.de> X-Mailer: git-send-email 2.40.1 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-samsung-soc@vger.kernel.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. v3: * fix Kconfig options (Jingfeng) * minimize changes to exynos (Sam) 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/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 +------- 22 files changed, 183 insertions(+), 355 deletions(-) base-commit: f533234d40e8f5b8599bd5bc97fa8e30384aec03 prerequisite-patch-id: 0aa359f6144c4015c140c8a6750be19099c676fb prerequisite-patch-id: c67e5d886a47b7d0266d81100837557fda34cb24 prerequisite-patch-id: cbc453ee02fae02af22fbfdce56ab732c7a88c36