From patchwork Fri Aug 30 08:39:49 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Thomas Zimmermann X-Patchwork-Id: 13784638 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 gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (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 828ACCA0EF7 for ; Fri, 30 Aug 2024 08:45:19 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id D1F2610E866; Fri, 30 Aug 2024 08:45:03 +0000 (UTC) Received: from smtp-out1.suse.de (smtp-out1.suse.de [195.135.223.130]) by gabe.freedesktop.org (Postfix) with ESMTPS id 0815B10E862; Fri, 30 Aug 2024 08:45:02 +0000 (UTC) Received: from imap1.dmz-prg2.suse.org (imap1.dmz-prg2.suse.org [IPv6:2a07:de40:b281:104:10:150:64:97]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by smtp-out1.suse.de (Postfix) with ESMTPS id AD05021A22; Fri, 30 Aug 2024 08:45:00 +0000 (UTC) Authentication-Results: smtp-out1.suse.de; none Received: from imap1.dmz-prg2.suse.org (localhost [127.0.0.1]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by imap1.dmz-prg2.suse.org (Postfix) with ESMTPS id 6790D13A66; Fri, 30 Aug 2024 08:45:00 +0000 (UTC) Received: from dovecot-director2.suse.de ([2a07:de40:b281:106:10:150:64:167]) by imap1.dmz-prg2.suse.org with ESMTPSA id 0L/4F4yG0WbyegAAD6G6ig (envelope-from ); Fri, 30 Aug 2024 08:45:00 +0000 From: Thomas Zimmermann To: daniel@ffwll.ch, airlied@gmail.com, jfalempe@redhat.com, javierm@redhat.com Cc: dri-devel@lists.freedesktop.org, amd-gfx@lists.freedesktop.org, intel-gfx@lists.freedesktop.org, intel-xe@lists.freedesktop.org, nouveau@lists.freedesktop.org, Thomas Zimmermann Subject: [PATCH v3 05/81] drm/fbdev-dma: Support struct drm_driver.fbdev_probe Date: Fri, 30 Aug 2024 10:39:49 +0200 Message-ID: <20240830084456.77630-6-tzimmermann@suse.de> X-Mailer: git-send-email 2.46.0 In-Reply-To: <20240830084456.77630-1-tzimmermann@suse.de> References: <20240830084456.77630-1-tzimmermann@suse.de> MIME-Version: 1.0 X-Rspamd-Pre-Result: action=no action; module=replies; Message is reply to one we originated X-Spamd-Result: default: False [-4.00 / 50.00]; REPLY(-4.00)[] X-Rspamd-Queue-Id: AD05021A22 X-Rspamd-Pre-Result: action=no action; module=replies; Message is reply to one we originated X-Rspamd-Action: no action X-Rspamd-Server: rspamd1.dmz-prg2.suse.org X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" Rework fbdev probing to support fbdev_probe in struct drm_driver and reimplement the old fb_probe callback on top of it. Provide an initializer macro for struct drm_driver that sets the callback according to the kernel configuration. This change allows the common fbdev client to run on top of DMA- based DRM drivers. Signed-off-by: Thomas Zimmermann Reviewed-by: Javier Martinez Canillas --- drivers/gpu/drm/drm_fbdev_dma.c | 60 ++++++++++++++++++++------------- include/drm/drm_fbdev_dma.h | 12 +++++++ 2 files changed, 48 insertions(+), 24 deletions(-) diff --git a/drivers/gpu/drm/drm_fbdev_dma.c b/drivers/gpu/drm/drm_fbdev_dma.c index 7ef5a48c8029..aeccf7f7a522 100644 --- a/drivers/gpu/drm/drm_fbdev_dma.c +++ b/drivers/gpu/drm/drm_fbdev_dma.c @@ -86,6 +86,40 @@ static const struct fb_ops drm_fbdev_dma_fb_ops = { static int drm_fbdev_dma_helper_fb_probe(struct drm_fb_helper *fb_helper, struct drm_fb_helper_surface_size *sizes) +{ + return drm_fbdev_dma_driver_fbdev_probe(fb_helper, sizes); +} + +static int drm_fbdev_dma_helper_fb_dirty(struct drm_fb_helper *helper, + struct drm_clip_rect *clip) +{ + struct drm_device *dev = helper->dev; + int ret; + + /* Call damage handlers only if necessary */ + if (!(clip->x1 < clip->x2 && clip->y1 < clip->y2)) + return 0; + + if (helper->fb->funcs->dirty) { + ret = helper->fb->funcs->dirty(helper->fb, NULL, 0, 0, clip, 1); + if (drm_WARN_ONCE(dev, ret, "Dirty helper failed: ret=%d\n", ret)) + return ret; + } + + return 0; +} + +static const struct drm_fb_helper_funcs drm_fbdev_dma_helper_funcs = { + .fb_probe = drm_fbdev_dma_helper_fb_probe, + .fb_dirty = drm_fbdev_dma_helper_fb_dirty, +}; + +/* + * struct drm_fb_helper + */ + +int drm_fbdev_dma_driver_fbdev_probe(struct drm_fb_helper *fb_helper, + struct drm_fb_helper_surface_size *sizes) { struct drm_client_dev *client = &fb_helper->client; struct drm_device *dev = fb_helper->dev; @@ -119,6 +153,7 @@ static int drm_fbdev_dma_helper_fb_probe(struct drm_fb_helper *fb_helper, goto err_drm_client_buffer_delete; } + fb_helper->funcs = &drm_fbdev_dma_helper_funcs; fb_helper->buffer = buffer; fb_helper->fb = fb; @@ -165,30 +200,7 @@ static int drm_fbdev_dma_helper_fb_probe(struct drm_fb_helper *fb_helper, drm_client_framebuffer_delete(buffer); return ret; } - -static int drm_fbdev_dma_helper_fb_dirty(struct drm_fb_helper *helper, - struct drm_clip_rect *clip) -{ - struct drm_device *dev = helper->dev; - int ret; - - /* Call damage handlers only if necessary */ - if (!(clip->x1 < clip->x2 && clip->y1 < clip->y2)) - return 0; - - if (helper->fb->funcs->dirty) { - ret = helper->fb->funcs->dirty(helper->fb, NULL, 0, 0, clip, 1); - if (drm_WARN_ONCE(dev, ret, "Dirty helper failed: ret=%d\n", ret)) - return ret; - } - - return 0; -} - -static const struct drm_fb_helper_funcs drm_fbdev_dma_helper_funcs = { - .fb_probe = drm_fbdev_dma_helper_fb_probe, - .fb_dirty = drm_fbdev_dma_helper_fb_dirty, -}; +EXPORT_SYMBOL(drm_fbdev_dma_driver_fbdev_probe); /* * struct drm_client_funcs diff --git a/include/drm/drm_fbdev_dma.h b/include/drm/drm_fbdev_dma.h index 2da7ee784133..6ae4de46497c 100644 --- a/include/drm/drm_fbdev_dma.h +++ b/include/drm/drm_fbdev_dma.h @@ -4,12 +4,24 @@ #define DRM_FBDEV_DMA_H struct drm_device; +struct drm_fb_helper; +struct drm_fb_helper_surface_size; #ifdef CONFIG_DRM_FBDEV_EMULATION +int drm_fbdev_dma_driver_fbdev_probe(struct drm_fb_helper *fb_helper, + struct drm_fb_helper_surface_size *sizes); + +#define DRM_FBDEV_DMA_DRIVER_OPS \ + .fbdev_probe = drm_fbdev_dma_driver_fbdev_probe + void drm_fbdev_dma_setup(struct drm_device *dev, unsigned int preferred_bpp); #else static inline void drm_fbdev_dma_setup(struct drm_device *dev, unsigned int preferred_bpp) { } + +#define DRM_FBDEV_DMA_DRIVER_OPS \ + .fbdev_probe = NULL + #endif #endif