From patchwork Tue Jul 4 15:49:57 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Thomas Zimmermann X-Patchwork-Id: 699527 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 319D9C001DB for ; Tue, 4 Jul 2023 16:01:41 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231435AbjGDQBk (ORCPT ); Tue, 4 Jul 2023 12:01:40 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56264 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230472AbjGDQBi (ORCPT ); Tue, 4 Jul 2023 12:01:38 -0400 Received: from smtp-out2.suse.de (smtp-out2.suse.de [IPv6:2001:67c:2178:6::1d]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C781410D8; Tue, 4 Jul 2023 09:01:36 -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-out2.suse.de (Postfix) with ESMTPS id 308C21FDCD; Tue, 4 Jul 2023 16:01:35 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_rsa; t=1688486495; 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; bh=q3o6HH10epfUBbyVpQ2BjTaq6/Z7q4pOKDMZHDJhhrk=; b=W3dCjljN3niN6goKeJiHVZjW6m+M0xhxyiv3x7nxsgQvkvWZ2KJd0H2o7qU4eNv9Qt2yIK x+KkxD9UE4m01BU5HHI/AXflTlw40YSrrZXn/3AR0nhrODhm624un8ct/w134s8MFG3pFc W9TDrEwYKwYiBvfGun19kVFo9CHanuc= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_ed25519; t=1688486495; 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; bh=q3o6HH10epfUBbyVpQ2BjTaq6/Z7q4pOKDMZHDJhhrk=; b=rCPwnYlgRA+jYT0G3ht5V7WgaqmVR4hIt5yTlLtWfDk0ZMptYxxMUJ4V5yf00bI19BBpBD 77x/kr/CkBPjwdAA== 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 EE42B133F7; Tue, 4 Jul 2023 16:01:34 +0000 (UTC) Received: from dovecot-director2.suse.de ([192.168.254.65]) by imap2.suse-dmz.suse.de with ESMTPSA id LMYvOV5CpGTzLwAAMHmgww (envelope-from ); Tue, 04 Jul 2023 16:01:34 +0000 From: Thomas Zimmermann To: javierm@redhat.com, maarten.lankhorst@linux.intel.com, mripard@kernel.org Cc: dri-devel@lists.freedesktop.org, linux-arm-kernel@lists.infradead.org, linux-samsung-soc@vger.kernel.org, linux-tegra@vger.kernel.org, linux-fbdev@vger.kernel.org, Thomas Zimmermann Subject: [PATCH 00/10] drm: Improve fbdev emulation for DMA-able framebuffers Date: Tue, 4 Jul 2023 17:49:57 +0200 Message-ID: <20230704160133.20261-1-tzimmermann@suse.de> X-Mailer: git-send-email 2.41.0 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-samsung-soc@vger.kernel.org Add fbdev helpers for framebuffers in DMA-able memory and update fbdev emulation in the respective DRM drivers. DMA memory used to handled as system memory. Improve this and prepare for possible future changes. Patch 1 adds initializer macros for struct fb_ops and a Kconfig token for framebuffers in DMA memory. Patches 2 to 4 update fbdev-dma and tegra. No functional changes are expected as both used system memory before. Patches 5 and 6 update exynos to use DMA helpers. Exynos incorrectly used fbdev's I/O-memory helpers. Fix this. Patches 7 to 9 update omapdrm to use DMA helpers. Patch 7 first reworks the driver's mmap to current best practices. This also makes it suitable for use with fbdev, which patches 8 and 9 implement. Patch 10 removes some fbdev macros for system memory that are now unused. The patchset would ideally go through drm-misc-next. Future patches can build upon it and update fbdev drivers in similar ways. Thomas Zimmermann (10): fbdev: Add fb_ops init macros for framebuffers in DMA-able memory drm/fbdev-dma: Use fbdev DMA helpers drm/tegra: Use fbdev DMA helpers drm/tegra: Set fbdev flags drm/exynos: Use fbdev DMA helpers drm/exynos: Set fbdev flags drm/omapdrm: Set VM flags in GEM-object mmap function drm/omapdrm: Use GEM mmap for fbdev emulation drm/omapdrm: Set fbdev flags fbdev: Remove FB_DEFAULT_SYS_OPS drivers/gpu/drm/Kconfig | 2 +- drivers/gpu/drm/drm_fbdev_dma.c | 4 ++-- drivers/gpu/drm/exynos/Kconfig | 2 +- drivers/gpu/drm/exynos/exynos_drm_fbdev.c | 6 ++++-- drivers/gpu/drm/omapdrm/Kconfig | 2 +- drivers/gpu/drm/omapdrm/omap_drv.c | 12 +----------- drivers/gpu/drm/omapdrm/omap_fbdev.c | 17 ++++++++++++++-- drivers/gpu/drm/omapdrm/omap_gem.c | 24 ++++++----------------- drivers/gpu/drm/omapdrm/omap_gem.h | 3 --- drivers/gpu/drm/omapdrm/omap_gem_dmabuf.c | 7 +------ drivers/gpu/drm/tegra/Kconfig | 2 +- drivers/gpu/drm/tegra/fbdev.c | 7 +++++-- drivers/video/fbdev/Kconfig | 8 ++++++++ include/linux/fb.h | 17 ++++++++++------ 14 files changed, 57 insertions(+), 56 deletions(-)