From patchwork Wed Sep 5 23:38:51 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Deepak Singh Rawat X-Patchwork-Id: 10589633 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id F1F31174C for ; Wed, 5 Sep 2018 23:39:42 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id E0DDC2AA6B for ; Wed, 5 Sep 2018 23:39:42 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id D540F2AA78; Wed, 5 Sep 2018 23:39:42 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-5.2 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 731962AA6B for ; Wed, 5 Sep 2018 23:39:42 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 11BC96E56F; Wed, 5 Sep 2018 23:39:35 +0000 (UTC) X-Original-To: dri-devel@lists.freedesktop.org Delivered-To: dri-devel@lists.freedesktop.org Received: from EX13-EDG-OU-002.vmware.com (ex13-edg-ou-002.vmware.com [208.91.0.190]) by gabe.freedesktop.org (Postfix) with ESMTPS id 96FF06E56D for ; Wed, 5 Sep 2018 23:39:31 +0000 (UTC) Received: from sc9-mailhost2.vmware.com (10.113.161.72) by EX13-EDG-OU-002.vmware.com (10.113.208.156) with Microsoft SMTP Server id 15.0.1156.6; Wed, 5 Sep 2018 16:39:24 -0700 Received: from ubuntu.localdomain (promb-2n-dhcp79.eng.vmware.com [10.20.88.79]) by sc9-mailhost2.vmware.com (Postfix) with ESMTP id DEA33B06E3; Wed, 5 Sep 2018 19:39:30 -0400 (EDT) From: Deepak Rawat To: , , , Subject: [PATCH 04/14] drm: add helper to implement legacy dirtyfb Date: Wed, 5 Sep 2018 16:38:51 -0700 Message-ID: <20180905233901.2321-5-drawat@vmware.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20180905233901.2321-1-drawat@vmware.com> References: <20180905233901.2321-1-drawat@vmware.com> MIME-Version: 1.0 Received-SPF: None (EX13-EDG-OU-002.vmware.com: drawat@vmware.com does not designate permitted sender hosts) X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Deepak Rawat , lukasz.spintzyk@displaylink.com Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" X-Virus-Scanned: ClamAV using ClamSMTP From: Rob Clark Add an atomic helper to implement dirtyfb support. This is needed to support DSI command-mode panels with x11 userspace (ie. when we can't rely on pageflips to trigger a flush to the panel). v2: Modified the helper to use plane fb_damage_clips property and removed plane_state::dirty flag. Signed-off-by: Rob Clark Signed-off-by: Deepak Rawat --- drivers/gpu/drm/drm_damage_helper.c | 116 ++++++++++++++++++++++++++++ include/drm/drm_damage_helper.h | 4 + 2 files changed, 120 insertions(+) diff --git a/drivers/gpu/drm/drm_damage_helper.c b/drivers/gpu/drm/drm_damage_helper.c index 7d70f6001889..b016ec375295 100644 --- a/drivers/gpu/drm/drm_damage_helper.c +++ b/drivers/gpu/drm/drm_damage_helper.c @@ -26,6 +26,7 @@ * * Authors: * Deepak Rawat + * Rob Clark * **************************************************************************/ @@ -81,6 +82,21 @@ static int convert_fixed_to_32(int fixed) return ((fixed >> 15) & 1) + (fixed >> 16); } +static void convert_clip_rect_to_rect(const struct drm_clip_rect *src, + struct drm_rect *dest, + uint32_t num_clips) +{ + while (num_clips > 0) { + dest->x1 = src->x1; + dest->y1 = src->y1; + dest->x2 = src->x2; + dest->y2 = src->y2; + src++; + dest++; + num_clips--; + } +} + /** * drm_plane_enable_fb_damage_clips - enables plane fb damage clips property * @plane: plane on which to enable damage clips property @@ -183,3 +199,103 @@ drm_atomic_helper_damage_iter_next(struct drm_atomic_helper_damage_iter *iter, return ret; } EXPORT_SYMBOL(drm_atomic_helper_damage_iter_next); + +/** + * drm_atomic_helper_dirtyfb - helper for dirtyfb + * @fb: DRM framebuffer + * @file_priv: drm file for the ioctl call + * @flags: dirty fb annotate flags + * @color: color for annotate fill + * @clips: dirty region + * @num_clips: count of clip in clips + * + * A helper to implement drm_framebuffer_funcs::dirty. This helper will do a + * full update in case of annotate flags. + * + * Returns: Zero on success, negative errno on failure. + */ +int drm_atomic_helper_dirtyfb(struct drm_framebuffer *fb, + struct drm_file *file_priv, unsigned flags, + unsigned color, struct drm_clip_rect *clips, + unsigned num_clips) +{ + struct drm_modeset_acquire_ctx ctx; + struct drm_property_blob *damage = NULL; + struct drm_atomic_state *state; + struct drm_plane *plane; + struct drm_rect *rects = NULL; + int ret = 0; + + /* + * When called from ioctl, we are interruptable, but not when called + * internally (ie. defio worker) + */ + drm_modeset_acquire_init(&ctx, + file_priv ? DRM_MODESET_ACQUIRE_INTERRUPTIBLE : 0); + + state = drm_atomic_state_alloc(fb->dev); + if (!state) { + ret = -ENOMEM; + goto out; + } + state->acquire_ctx = &ctx; + + WARN_ONCE(flags & DRM_MODE_FB_DIRTY_FLAGS, + "Full update for dirtyfb with DRM_MODE_FB_DIRTY_FLAGS\n"); + + if (!(flags & DRM_MODE_FB_DIRTY_FLAGS)) { + rects = kcalloc(num_clips, sizeof(*rects), GFP_KERNEL); + if (!rects) { + ret = -ENOMEM; + goto out; + } + + convert_clip_rect_to_rect(clips, rects, num_clips); + damage = drm_property_create_blob(fb->dev, + num_clips * sizeof(*rects), + rects); + if (IS_ERR(damage)) { + ret = PTR_ERR(damage); + damage = NULL; + goto out; + } + } + +retry: + drm_for_each_plane(plane, fb->dev) { + struct drm_plane_state *plane_state; + + if (plane->state->fb != fb) + continue; + + plane_state = drm_atomic_get_plane_state(state, plane); + if (IS_ERR(plane_state)) { + ret = PTR_ERR(plane_state); + goto out; + } + + drm_property_replace_blob(&plane_state->fb_damage_clips, + damage); + } + + ret = drm_atomic_commit(state); + +out: + if (ret == -EDEADLK) { + drm_atomic_state_clear(state); + ret = drm_modeset_backoff(&ctx); + if (!ret) + goto retry; + } + + drm_property_blob_put(damage); + kfree(rects); + drm_atomic_state_put(state); + + drm_modeset_drop_locks(&ctx); + drm_modeset_acquire_fini(&ctx); + + return ret; + +} +EXPORT_SYMBOL(drm_atomic_helper_dirtyfb); diff --git a/include/drm/drm_damage_helper.h b/include/drm/drm_damage_helper.h index 1f988f7fdd72..9d5c9444761b 100644 --- a/include/drm/drm_damage_helper.h +++ b/include/drm/drm_damage_helper.h @@ -89,5 +89,9 @@ drm_atomic_helper_damage_iter_init(struct drm_atomic_helper_damage_iter *iter, bool drm_atomic_helper_damage_iter_next(struct drm_atomic_helper_damage_iter *iter, struct drm_rect *rect); +int drm_atomic_helper_dirtyfb(struct drm_framebuffer *fb, + struct drm_file *file_priv, unsigned flags, + unsigned color, struct drm_clip_rect *clips, + unsigned num_clips); #endif