From patchwork Fri Jul 14 17:16:28 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Javier Martinez Canillas X-Patchwork-Id: 13313872 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 992B2EB64DC for ; Fri, 14 Jul 2023 17:17:53 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236023AbjGNRRv (ORCPT ); Fri, 14 Jul 2023 13:17:51 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:44778 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235865AbjGNRRu (ORCPT ); Fri, 14 Jul 2023 13:17:50 -0400 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.129.124]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 9212B3593 for ; Fri, 14 Jul 2023 10:16:55 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1689355014; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding; bh=2kL6s2iGtpGIjyrMzCwNbgQ+dYlVfsjyP7TiMQdzptE=; b=RwCADI+K+SPY3f0tcCk7DuZVmQ+CBWHdRCFkKLjDPu78R0hIUVWp4ZFWotain8Y0nfIWmp XlDHoI/X6ipD7E7gwQ4drQFGO+b35KKjkiKQugkYPOe8n6p2RXS78CSGEUKzf5arrmj09Y rKNKq0TsV4gSiIgdFePMF30mPWNv61A= Received: from mail-wr1-f69.google.com (mail-wr1-f69.google.com [209.85.221.69]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-269-BQ5dPLIEPfmdrxtOnJ2ZtA-1; Fri, 14 Jul 2023 13:16:53 -0400 X-MC-Unique: BQ5dPLIEPfmdrxtOnJ2ZtA-1 Received: by mail-wr1-f69.google.com with SMTP id ffacd0b85a97d-315935c808bso893716f8f.1 for ; Fri, 14 Jul 2023 10:16:52 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1689355012; x=1691947012; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=2kL6s2iGtpGIjyrMzCwNbgQ+dYlVfsjyP7TiMQdzptE=; b=KwOi1VQzXWjhEzE9tsfZcCBcOD/IqCa6joXrWWQwSZCH6VYZcAgMT/buQv+Sp/YM3K gqWSQPxb9hCUdXJO7nwbLKuMiKfPr0kPU94A65D/zr7x13TvKtEn7bIpujeoyyA9h61o TuXBlOM2Isten4Ks1RSfQHFjgWliWkbES6lpodZ6KQQl/3EqBfAm2BbzSGcdiFG2VXjO Li3DsLOWEqls2BzV5HE4NxDzvo2Cuhq0FJ1Cdz4emkwtS3yIwXi3jZMJYJykordIwfEj AJuThLKY4nGmYP2zriCMcVZ9pQl8ANF5Pa6mN6YHFrMNll4ewGGtafkpgs3EnJxekUR8 B01Q== X-Gm-Message-State: ABy/qLZ3Y4Re+XlVDROJAvjmag2QZnfQboEVcoaLJyJsNVHJHOCH0a43 yGV7j8803AneSsk/Jy1qqIbjI1Lf9fLrZ8c22qx90QncviK1wCt7K13R7Acv2DbgsjpZVe5uv+9 KyhlacrUXH0Fk2e8WpTWveFk= X-Received: by 2002:adf:f04f:0:b0:314:3108:500a with SMTP id t15-20020adff04f000000b003143108500amr3012599wro.0.1689355012083; Fri, 14 Jul 2023 10:16:52 -0700 (PDT) X-Google-Smtp-Source: APBJJlG+Si2gkk224xulr2GYQ3B2/NaZI0tm53emCdaXDgKsHXxBVo/NNGKHPxSgoWGegYqwn2oCFg== X-Received: by 2002:adf:f04f:0:b0:314:3108:500a with SMTP id t15-20020adff04f000000b003143108500amr3012588wro.0.1689355011770; Fri, 14 Jul 2023 10:16:51 -0700 (PDT) Received: from minerva.home (205.pool92-176-231.dynamic.orange.es. [92.176.231.205]) by smtp.gmail.com with ESMTPSA id d17-20020adfe891000000b003143cdc5949sm11620842wrm.9.2023.07.14.10.16.49 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 14 Jul 2023 10:16:51 -0700 (PDT) From: Javier Martinez Canillas To: linux-kernel@vger.kernel.org Cc: Geert Uytterhoeven , Thomas Zimmermann , Arnd Bergmann , Javier Martinez Canillas , Andy Shevchenko , Borislav Petkov , Daniel Thompson , Daniel Vetter , Dave Hansen , David Airlie , Greg Kroah-Hartman , "H. Peter Anvin" , Helge Deller , Ingo Molnar , Jacek Lawrynowicz , Jingoo Han , Lee Jones , Maarten Lankhorst , Maxime Ripard , Melissa Wen , Nipun Gupta , Oded Gabbay , Randy Dunlap , Sam Ravnborg , Thomas Gleixner , dri-devel@lists.freedesktop.org, linux-fbdev@vger.kernel.org, x86@kernel.org Subject: [PATCH v5 0/4] Allow disabling all native fbdev drivers and only keeping DRM emulation Date: Fri, 14 Jul 2023 19:16:28 +0200 Message-ID: <20230714171642.91185-1-javierm@redhat.com> X-Mailer: git-send-email 2.41.0 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-fbdev@vger.kernel.org This patch series splits the fbdev core support in two different Kconfig symbols: FB and FB_CORE. The motivation for this is to allow CONFIG_FB to be disabled, while still having the the core fbdev support needed for the CONFIG_DRM_FBDEV_EMULATION to be enabled. The motivation is automatically disabling all fbdev drivers instead of having to be disabled individually. The reason for doing this is that now with simpledrm, there's no need for the legacy fbdev (e.g: efifb or vesafb) drivers anymore and many distros now disable them. But it would simplify the config a lot fo have a single Kconfig symbol to disable all fbdev drivers. I've built tested with possible combinations of CONFIG_FB, CONFIG_FB_CORE, CONFIG_DRM_FBDEV_EMULATION and CONFIG_FB_DEVICE symbols set to 'y' or 'n'. Patch #1 moves the auxdisplay drivers to "Graphics support" Kconfig menu, patch #2 moves the core fbdev Kconfig symbols to a separate Kconfig file, patch #3 does the FB symbol split and introduces the FB_CORE symbol and finally patch #4 makes the DRM symbol to select FB_CORE if the DRM fbdev emualtion support was enabled. Since this series touches three subsystems (auxdisplay, fbdev and DRM), I would like to merge it through DRM with the acks of these maintainers. This is a v5 of the patch-set that addresses issues pointed out by Arnd Bergmann, Thomas Zimmermann and Geert Uytterhoeven in the previous v4: https://lists.freedesktop.org/archives/dri-devel/2023-July/411842.html Changes in v5: - Take the auxdisplay/Kconfig source out of "if HAS_IOMEM" (Geert Uytterhoeven). - Fix ifdef guard check in drivers/video/backlight/backlight.c (Arnd Bergmann). Changes in v4: - Fix menuconfig hierarchy that was broken in v3 (Arnd Bergmann). Changes in v3: - Really make a hidden symbol by removing the prompt (Arnd Bergmann). - Change FB_CORE to config instead of menuconfig (Arnd Bergmann). - Keep "depends on FB" for FIRMWARE_EDID (Arnd Bergmann). - Compile out fb_backlight.o and fbmon.o that are only needed for FB (Arnd Bergmann). - Make FB_DEVICE to depend on FB_CORE instead of selecting it. - Make the DRM symbol to select FB_CORE if DRM_FBDEV_EMULATION is enabled (Arnd Bergmann). - Also make DRM select FB_SYS_HELPERS_DEFERRED if DRM_FBDEV_EMULATION - Make DRM_FBDEV_EMULATION to depend on DRM instead of DRM_KMS_HELPER. Changes in v2: - Keep "depends on FB" for FB_DDC, FB_HECUBA, FB_SVGALIB, FB_MACMODES, FB_BACKLIGHT, FB_MODE_HELPERS and FB_TILEBLITTING (Arnd Bergmann). - Don't change the fb.o object name (Arnd Bergmann). - Make FB_CORE a non-visible Kconfig symbol instead (Thomas Zimmermann). - Make CONFIG_DRM_FBDEV_EMULATION to select FB_CORE (Thomas Zimmermann). Javier Martinez Canillas (4): video: Add auxiliary display drivers to Graphics support menu fbdev: Move core fbdev symbols to a separate Kconfig file fbdev: Split frame buffer support in FB and FB_CORE symbols drm: Make FB_CORE to be selected if DRM fbdev emulation is enabled arch/x86/Makefile | 2 +- arch/x86/video/Makefile | 2 +- drivers/Kconfig | 2 - drivers/gpu/drm/Kconfig | 7 +- drivers/video/Kconfig | 2 + drivers/video/backlight/backlight.c | 6 +- drivers/video/console/Kconfig | 2 +- drivers/video/fbdev/Kconfig | 213 ++-------------------------- drivers/video/fbdev/core/Kconfig | 206 +++++++++++++++++++++++++++ drivers/video/fbdev/core/Makefile | 8 +- 10 files changed, 232 insertions(+), 218 deletions(-) create mode 100644 drivers/video/fbdev/core/Kconfig Reviewed-by: Arnd Bergmann Tested-by: Arnd Bergmann