From patchwork Fri May 12 08:41:52 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Thomas Zimmermann X-Patchwork-Id: 681729 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 3F3BBC77B75 for ; Fri, 12 May 2023 08:42:10 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S240230AbjELImI (ORCPT ); Fri, 12 May 2023 04:42:08 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:54416 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S240109AbjELImC (ORCPT ); Fri, 12 May 2023 04:42:02 -0400 Received: from smtp-out2.suse.de (smtp-out2.suse.de [195.135.220.29]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 99EC07A83; Fri, 12 May 2023 01:41:59 -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 3EA412043C; Fri, 12 May 2023 08:41:58 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_rsa; t=1683880918; 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: in-reply-to:in-reply-to:references:references; bh=O8vQFFBDFf/ryQujqIN2i9e254YEiv94fJp4fTxrbIA=; b=xRQc0CLLEZUPaIo7raYxmPPFMYSwXjT+YS5qhYcqFuMti/vmVx8fL40H71VrX0FPO+My0k ltVUo1PnvmUUT8sL3eEY6nb9GSDtEE7cUhICFmaojA9uaJdpkQsyiX0hKuXrRRBllXX4i0 PtFo3ej7Dw0yz4rQV3BDnyX/8xa1vSs= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_ed25519; t=1683880918; 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: in-reply-to:in-reply-to:references:references; bh=O8vQFFBDFf/ryQujqIN2i9e254YEiv94fJp4fTxrbIA=; b=TpiQkBf2h3jyJQg9pjqnAz4MzolLBf2XkX2BdYv9vF8KgEUxQ62HDWdxN4JodpMwfEv9uC cP35rR3oaY914eCQ== 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 A297F13A0A; Fri, 12 May 2023 08:41:57 +0000 (UTC) Received: from dovecot-director2.suse.de ([192.168.254.65]) by imap2.suse-dmz.suse.de with ESMTPSA id gEI/JtX7XWQZKQAAMHmgww (envelope-from ); Fri, 12 May 2023 08:41:57 +0000 From: Thomas Zimmermann To: daniel@ffwll.ch, airlied@gmail.com, maarten.lankhorst@linux.intel.com, mripard@kernel.org, javierm@redhat.com 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 , Jani Nikula , Joonas Lahtinen , Rodrigo Vivi , Tvrtko Ursulin , =?utf-8?b?VmlsbGUgU3lyasOk?= =?utf-8?b?bMOk?= Subject: [PATCH 11/11] drm/i915: Implement dedicated fbdev I/O helpers Date: Fri, 12 May 2023 10:41:52 +0200 Message-Id: <20230512084152.31233-12-tzimmermann@suse.de> X-Mailer: git-send-email 2.40.1 In-Reply-To: <20230512084152.31233-1-tzimmermann@suse.de> References: <20230512084152.31233-1-tzimmermann@suse.de> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-samsung-soc@vger.kernel.org Implement dedicated fbdev helpers for framebuffer I/O instead of using DRM's helpers. i915 was the only caller of the DRM helpers, so remove them from the helper module. Add CONFIG_DRM_I915_FBDEV_EMULATION to select the necessary Kconfig options automatically. Make fbdev emulation depend on the new config option. Signed-off-by: Thomas Zimmermann Cc: Jani Nikula Cc: Joonas Lahtinen Cc: Rodrigo Vivi Cc: Tvrtko Ursulin Cc: "Ville Syrjälä" --- drivers/gpu/drm/Kconfig | 3 - drivers/gpu/drm/drm_fb_helper.c | 107 ------------------ drivers/gpu/drm/i915/Kconfig | 8 ++ drivers/gpu/drm/i915/Makefile | 2 +- .../drm/i915/display/intel_display_debugfs.c | 2 +- drivers/gpu/drm/i915/display/intel_fbdev.c | 51 ++++++++- drivers/gpu/drm/i915/display/intel_fbdev.h | 2 +- include/drm/drm_fb_helper.h | 39 ------- 8 files changed, 56 insertions(+), 158 deletions(-) diff --git a/drivers/gpu/drm/Kconfig b/drivers/gpu/drm/Kconfig index c67c97471b3c..cf8d5ec5a654 100644 --- a/drivers/gpu/drm/Kconfig +++ b/drivers/gpu/drm/Kconfig @@ -142,9 +142,6 @@ config DRM_FBDEV_EMULATION bool "Enable legacy fbdev support for your modesetting driver" depends on DRM_KMS_HELPER depends on FB=y || FB=DRM_KMS_HELPER - select FB_CFB_FILLRECT - select FB_CFB_COPYAREA - select FB_CFB_IMAGEBLIT select FRAMEBUFFER_CONSOLE if !EXPERT select FRAMEBUFFER_CONSOLE_DETECT_PRIMARY if FRAMEBUFFER_CONSOLE default y diff --git a/drivers/gpu/drm/drm_fb_helper.c b/drivers/gpu/drm/drm_fb_helper.c index ba0a808f14ee..5927896ad8f6 100644 --- a/drivers/gpu/drm/drm_fb_helper.c +++ b/drivers/gpu/drm/drm_fb_helper.c @@ -729,113 +729,6 @@ void drm_fb_helper_deferred_io(struct fb_info *info, struct list_head *pagerefli } EXPORT_SYMBOL(drm_fb_helper_deferred_io); -/** - * drm_fb_helper_cfb_read - Implements struct &fb_ops.fb_read for I/O memory - * @info: fb_info struct pointer - * @buf: userspace buffer to read from framebuffer memory - * @count: number of bytes to read from framebuffer memory - * @ppos: read offset within framebuffer memory - * - * Returns: - * The number of bytes read on success, or an error code otherwise. - */ -ssize_t drm_fb_helper_cfb_read(struct fb_info *info, char __user *buf, - size_t count, loff_t *ppos) -{ - return fb_io_read(info, buf, count, ppos); -} -EXPORT_SYMBOL(drm_fb_helper_cfb_read); - -/** - * drm_fb_helper_cfb_write - Implements struct &fb_ops.fb_write for I/O memory - * @info: fb_info struct pointer - * @buf: userspace buffer to write to framebuffer memory - * @count: number of bytes to write to framebuffer memory - * @ppos: write offset within framebuffer memory - * - * Returns: - * The number of bytes written on success, or an error code otherwise. - */ -ssize_t drm_fb_helper_cfb_write(struct fb_info *info, const char __user *buf, - size_t count, loff_t *ppos) -{ - struct drm_fb_helper *helper = info->par; - loff_t pos = *ppos; - ssize_t ret; - struct drm_rect damage_area; - - ret = fb_io_write(info, buf, count, ppos); - if (ret <= 0) - return ret; - - if (helper->funcs->fb_dirty) { - drm_fb_helper_memory_range_to_clip(info, pos, ret, &damage_area); - drm_fb_helper_damage(helper, damage_area.x1, damage_area.y1, - drm_rect_width(&damage_area), - drm_rect_height(&damage_area)); - } - - return ret; -} -EXPORT_SYMBOL(drm_fb_helper_cfb_write); - -/** - * drm_fb_helper_cfb_fillrect - wrapper around cfb_fillrect - * @info: fbdev registered by the helper - * @rect: info about rectangle to fill - * - * A wrapper around cfb_fillrect implemented by fbdev core - */ -void drm_fb_helper_cfb_fillrect(struct fb_info *info, - const struct fb_fillrect *rect) -{ - struct drm_fb_helper *helper = info->par; - - cfb_fillrect(info, rect); - - if (helper->funcs->fb_dirty) - drm_fb_helper_damage(helper, rect->dx, rect->dy, rect->width, rect->height); -} -EXPORT_SYMBOL(drm_fb_helper_cfb_fillrect); - -/** - * drm_fb_helper_cfb_copyarea - wrapper around cfb_copyarea - * @info: fbdev registered by the helper - * @area: info about area to copy - * - * A wrapper around cfb_copyarea implemented by fbdev core - */ -void drm_fb_helper_cfb_copyarea(struct fb_info *info, - const struct fb_copyarea *area) -{ - struct drm_fb_helper *helper = info->par; - - cfb_copyarea(info, area); - - if (helper->funcs->fb_dirty) - drm_fb_helper_damage(helper, area->dx, area->dy, area->width, area->height); -} -EXPORT_SYMBOL(drm_fb_helper_cfb_copyarea); - -/** - * drm_fb_helper_cfb_imageblit - wrapper around cfb_imageblit - * @info: fbdev registered by the helper - * @image: info about image to blit - * - * A wrapper around cfb_imageblit implemented by fbdev core - */ -void drm_fb_helper_cfb_imageblit(struct fb_info *info, - const struct fb_image *image) -{ - struct drm_fb_helper *helper = info->par; - - cfb_imageblit(info, image); - - if (helper->funcs->fb_dirty) - drm_fb_helper_damage(helper, image->dx, image->dy, image->width, image->height); -} -EXPORT_SYMBOL(drm_fb_helper_cfb_imageblit); - /** * drm_fb_helper_set_suspend - wrapper around fb_set_suspend * @fb_helper: driver-allocated fbdev helper, can be NULL diff --git a/drivers/gpu/drm/i915/Kconfig b/drivers/gpu/drm/i915/Kconfig index e4f4d2e3fdfe..c2af3b780a7c 100644 --- a/drivers/gpu/drm/i915/Kconfig +++ b/drivers/gpu/drm/i915/Kconfig @@ -14,6 +14,7 @@ config DRM_I915 select DRM_DISPLAY_HDCP_HELPER select DRM_DISPLAY_HDMI_HELPER select DRM_DISPLAY_HELPER + select DRM_I915_FBDEV_EMULATION if DRM_FBDEV_EMULATION select DRM_KMS_HELPER select DRM_PANEL select DRM_MIPI_DSI @@ -154,6 +155,13 @@ config DRM_I915_PXP protected session and manage the status of the alive software session, as well as its life cycle. +config DRM_I915_FBDEV_EMULATION + bool + depends on DRM_I915 + select FB_CFB_COPYAREA + select FB_CFB_FILLRECT + select FB_CFB_IMAGEBLIT + menu "drm/i915 Debugging" depends on DRM_I915 depends on EXPERT diff --git a/drivers/gpu/drm/i915/Makefile b/drivers/gpu/drm/i915/Makefile index d97d45ae1a0d..3593a6b8f7ab 100644 --- a/drivers/gpu/drm/i915/Makefile +++ b/drivers/gpu/drm/i915/Makefile @@ -286,7 +286,7 @@ i915-y += \ i915-$(CONFIG_ACPI) += \ display/intel_acpi.o \ display/intel_opregion.o -i915-$(CONFIG_DRM_FBDEV_EMULATION) += \ +i915-$(CONFIG_DRM_I915_FBDEV_EMULATION) += \ display/intel_fbdev.o # modesetting output/encoder code diff --git a/drivers/gpu/drm/i915/display/intel_display_debugfs.c b/drivers/gpu/drm/i915/display/intel_display_debugfs.c index e72288662f02..967962421c14 100644 --- a/drivers/gpu/drm/i915/display/intel_display_debugfs.c +++ b/drivers/gpu/drm/i915/display/intel_display_debugfs.c @@ -108,7 +108,7 @@ static int i915_gem_framebuffer_info(struct seq_file *m, void *data) struct intel_framebuffer *fbdev_fb = NULL; struct drm_framebuffer *drm_fb; -#ifdef CONFIG_DRM_FBDEV_EMULATION +#ifdef CONFIG_DRM_I915_FBDEV_EMULATION fbdev_fb = intel_fbdev_framebuffer(dev_priv->display.fbdev.fbdev); if (fbdev_fb) { seq_printf(m, "fbcon size: %d x %d, depth %d, %d bpp, modifier 0x%llx, refcount %d, obj ", diff --git a/drivers/gpu/drm/i915/display/intel_fbdev.c b/drivers/gpu/drm/i915/display/intel_fbdev.c index aab1ae74a8f7..64aeacef703d 100644 --- a/drivers/gpu/drm/i915/display/intel_fbdev.c +++ b/drivers/gpu/drm/i915/display/intel_fbdev.c @@ -28,6 +28,7 @@ #include #include #include +#include #include #include #include @@ -84,6 +85,20 @@ static void intel_fbdev_invalidate(struct intel_fbdev *ifbdev) intel_frontbuffer_invalidate(to_frontbuffer(ifbdev), ORIGIN_CPU); } +static ssize_t intel_fbdev_fb_write(struct fb_info *info, const char __user *buf, + size_t count, loff_t *ppos) +{ + struct drm_fb_helper *helper = info->par; + loff_t pos = *ppos; + ssize_t ret; + + ret = fb_io_write(info, buf, count, ppos); + if (ret > 0) + drm_fb_helper_damage_range(helper, pos, ret); + + return ret; +} + static int intel_fbdev_set_par(struct fb_info *info) { struct intel_fbdev *ifbdev = to_intel_fbdev(info->par); @@ -121,6 +136,30 @@ static int intel_fbdev_pan_display(struct fb_var_screeninfo *var, return ret; } +static void intel_fbdev_fb_fillrect(struct fb_info *info, const struct fb_fillrect *rect) +{ + struct drm_fb_helper *helper = info->par; + + cfb_fillrect(info, rect); + drm_fb_helper_damage(helper, rect->dx, rect->dy, rect->width, rect->height); +} + +static void intel_fbdev_fb_copyarea(struct fb_info *info, const struct fb_copyarea *area) +{ + struct drm_fb_helper *helper = info->par; + + cfb_copyarea(info, area); + drm_fb_helper_damage(helper, area->dx, area->dy, area->width, area->height); +} + +static void intel_fbdev_fb_imageblit(struct fb_info *info, const struct fb_image *image) +{ + struct drm_fb_helper *helper = info->par; + + cfb_imageblit(info, image); + drm_fb_helper_damage(helper, image->dx, image->dy, image->width, image->height); +} + static int intel_fbdev_mmap(struct fb_info *info, struct vm_area_struct *vma) { struct intel_fbdev *fbdev = to_intel_fbdev(info->par); @@ -134,13 +173,13 @@ static const struct fb_ops intelfb_ops = { .owner = THIS_MODULE, DRM_FB_HELPER_DEFAULT_OPS, .fb_set_par = intel_fbdev_set_par, - .fb_read = drm_fb_helper_cfb_read, - .fb_write = drm_fb_helper_cfb_write, - .fb_fillrect = drm_fb_helper_cfb_fillrect, - .fb_copyarea = drm_fb_helper_cfb_copyarea, - .fb_imageblit = drm_fb_helper_cfb_imageblit, - .fb_pan_display = intel_fbdev_pan_display, + .fb_read = fb_io_read, + .fb_write = intel_fbdev_fb_write, .fb_blank = intel_fbdev_blank, + .fb_pan_display = intel_fbdev_pan_display, + .fb_fillrect = intel_fbdev_fb_fillrect, + .fb_copyarea = intel_fbdev_fb_copyarea, + .fb_imageblit = intel_fbdev_fb_imageblit, .fb_mmap = intel_fbdev_mmap, }; diff --git a/drivers/gpu/drm/i915/display/intel_fbdev.h b/drivers/gpu/drm/i915/display/intel_fbdev.h index 04fd523a5023..3900030808bf 100644 --- a/drivers/gpu/drm/i915/display/intel_fbdev.h +++ b/drivers/gpu/drm/i915/display/intel_fbdev.h @@ -13,7 +13,7 @@ struct drm_i915_private; struct intel_fbdev; struct intel_framebuffer; -#ifdef CONFIG_DRM_FBDEV_EMULATION +#if defined(CONFIG_DRM_I915_FBDEV_EMULATION) int intel_fbdev_init(struct drm_device *dev); void intel_fbdev_initial_config_async(struct drm_i915_private *dev_priv); void intel_fbdev_unregister(struct drm_i915_private *dev_priv); diff --git a/include/drm/drm_fb_helper.h b/include/drm/drm_fb_helper.h index e3240d749a43..15f03d8fb5cd 100644 --- a/include/drm/drm_fb_helper.h +++ b/include/drm/drm_fb_helper.h @@ -259,18 +259,6 @@ void drm_fb_helper_damage_range(struct drm_fb_helper *helper, off_t off, size_t void drm_fb_helper_deferred_io(struct fb_info *info, struct list_head *pagereflist); -ssize_t drm_fb_helper_cfb_read(struct fb_info *info, char __user *buf, - size_t count, loff_t *ppos); -ssize_t drm_fb_helper_cfb_write(struct fb_info *info, const char __user *buf, - size_t count, loff_t *ppos); - -void drm_fb_helper_cfb_fillrect(struct fb_info *info, - const struct fb_fillrect *rect); -void drm_fb_helper_cfb_copyarea(struct fb_info *info, - const struct fb_copyarea *area); -void drm_fb_helper_cfb_imageblit(struct fb_info *info, - const struct fb_image *image); - void drm_fb_helper_set_suspend(struct drm_fb_helper *fb_helper, bool suspend); void drm_fb_helper_set_suspend_unlocked(struct drm_fb_helper *fb_helper, bool suspend); @@ -386,33 +374,6 @@ static inline int drm_fb_helper_defio_init(struct drm_fb_helper *fb_helper) return -ENODEV; } -static inline ssize_t drm_fb_helper_cfb_read(struct fb_info *info, char __user *buf, - size_t count, loff_t *ppos) -{ - return -ENODEV; -} - -static inline ssize_t drm_fb_helper_cfb_write(struct fb_info *info, const char __user *buf, - size_t count, loff_t *ppos) -{ - return -ENODEV; -} - -static inline void drm_fb_helper_cfb_fillrect(struct fb_info *info, - const struct fb_fillrect *rect) -{ -} - -static inline void drm_fb_helper_cfb_copyarea(struct fb_info *info, - const struct fb_copyarea *area) -{ -} - -static inline void drm_fb_helper_cfb_imageblit(struct fb_info *info, - const struct fb_image *image) -{ -} - static inline void drm_fb_helper_set_suspend(struct drm_fb_helper *fb_helper, bool suspend) {