From patchwork Wed Jul 20 14:27:22 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Thomas Zimmermann X-Patchwork-Id: 12924064 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 71864C433EF for ; Wed, 20 Jul 2022 14:27:42 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234570AbiGTO1l (ORCPT ); Wed, 20 Jul 2022 10:27:41 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41798 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230285AbiGTO1j (ORCPT ); Wed, 20 Jul 2022 10:27:39 -0400 Received: from smtp-out1.suse.de (smtp-out1.suse.de [195.135.220.28]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 733533E75F for ; Wed, 20 Jul 2022 07:27:38 -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 2C9DC34851; Wed, 20 Jul 2022 14:27:34 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_rsa; t=1658327254; 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=ndyTqgDHrwAnRGiKTFcM0pUlQ6zCKyLMtSPcv3dUEvI=; b=foVbmkvsWdvUGChCCXU0jXpKoN76BNS/M252S4BtEOB1pY19WzLPmvlFbJOXL1sSHiPyWZ L9e1sqdkz/rLs5qOCErxAUzERLr/F7uq/xe13EwhmJ4L8TJchu+iJ4Pi/dNHO8jKc98wIe DTEoLyxLyAqusSbMDN0zt65CwhuCDWg= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_ed25519; t=1658327254; 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=ndyTqgDHrwAnRGiKTFcM0pUlQ6zCKyLMtSPcv3dUEvI=; b=pZY0KCwwddwZRf0uPX+Z3MZHcVpvAbibSGhx3s4tDi0jFFZfclFKR8NaYAA8TxWpTBKQyn mF2LoWhv56JVVECg== 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 D75A713AAD; Wed, 20 Jul 2022 14:27:33 +0000 (UTC) Received: from dovecot-director2.suse.de ([192.168.254.65]) by imap2.suse-dmz.suse.de with ESMTPSA id mvSsM9UQ2GLfHgAAMHmgww (envelope-from ); Wed, 20 Jul 2022 14:27:33 +0000 From: Thomas Zimmermann To: javierm@redhat.com, airlied@linux.ie, daniel@ffwll.ch, deller@gmx.de, maxime@cerno.tech, sam@ravnborg.org, msuchanek@suse.de, mpe@ellerman.id.au, benh@kernel.crashing.org, paulus@samba.org, geert@linux-m68k.org, mark.cave-ayland@ilande.co.uk Cc: linux-fbdev@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, dri-devel@lists.freedesktop.org, Thomas Zimmermann Subject: [PATCH v2 00/10] drm: Add driver for PowerPC OF displays Date: Wed, 20 Jul 2022 16:27:22 +0200 Message-Id: <20220720142732.32041-1-tzimmermann@suse.de> X-Mailer: git-send-email 2.36.1 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-fbdev@vger.kernel.org (was: drm: Add driverof PowerPC OF displays) PowerPC's Open Firmware offers a simple display buffer for graphics output. Add ofdrm, a DRM driver for the device. As with the existing simpledrm driver, the graphics hardware is pre-initialized by the firmware. The driver only provides blitting, no actual DRM modesetting is possible. Version 2 of this patchset starts by cleaning up and refactoring simpledrm, and moving some of the code in a helper library. These functions are useful for ofdrm as well. Patch 7 adds ofdrm, which has been significantly reworked since v1. PCI is now optional and COMPILE_TEST is supported. Patches 8 to 10 add support for color management. The code has been taken from fbdev's offb. I have no hardware available for testing the functionality. Qemu's stdvga apparently does not support gamma tables in RGB modes. I verified that the color management code is executed by running Gnome's night-mode settings, but the display's color tone does not change. Thomas Zimmermann (10): drm/simpledrm: Remove mem field from device structure drm/simpledrm: Inline device-init helpers drm/simpledrm: Remove pdev field from device structure drm/simpledrm: Compute framebuffer stride if not set drm/simpledrm: Convert to atomic helpers drm/simpledrm: Move some functionality into fwfb helper library drm/ofdrm: Add ofdrm for Open Firmware framebuffers drm/ofdrm: Add CRTC state drm/ofdrm: Add per-model device function drm/ofdrm: Support color management Documentation/gpu/drm-kms-helpers.rst | 12 + MAINTAINERS | 3 + drivers/gpu/drm/Kconfig | 6 + drivers/gpu/drm/Makefile | 3 +- drivers/gpu/drm/drm_fwfb_helper.c | 301 ++++++ drivers/gpu/drm/tiny/Kconfig | 15 + drivers/gpu/drm/tiny/Makefile | 1 + drivers/gpu/drm/tiny/ofdrm.c | 1301 +++++++++++++++++++++++++ drivers/gpu/drm/tiny/simpledrm.c | 588 +++++------ drivers/video/fbdev/Kconfig | 1 + include/drm/drm_fwfb_helper.h | 51 + 11 files changed, 1949 insertions(+), 333 deletions(-) create mode 100644 drivers/gpu/drm/drm_fwfb_helper.c create mode 100644 drivers/gpu/drm/tiny/ofdrm.c create mode 100644 include/drm/drm_fwfb_helper.h