From patchwork Tue Jan 12 13:39:18 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Marek Szyprowski X-Patchwork-Id: 8017291 Return-Path: X-Original-To: patchwork-linux-samsung-soc@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 50B0D9F6FA for ; Tue, 12 Jan 2016 13:40:04 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 6E478203E6 for ; Tue, 12 Jan 2016 13:40:01 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id CB372203DB for ; Tue, 12 Jan 2016 13:39:58 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1762278AbcALNj6 (ORCPT ); Tue, 12 Jan 2016 08:39:58 -0500 Received: from mailout2.w1.samsung.com ([210.118.77.12]:12002 "EHLO mailout2.w1.samsung.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1759355AbcALNj4 (ORCPT ); Tue, 12 Jan 2016 08:39:56 -0500 MIME-version: 1.0 Content-type: text/plain; charset=UTF-8 Received: from eucpsbgm2.samsung.com (unknown [203.254.199.245]) by mailout2.w1.samsung.com (Oracle Communications Messaging Server 7.0.5.31.0 64bit (built May 5 2014)) with ESMTP id <0O0U00L95DYHK210@mailout2.w1.samsung.com> for linux-samsung-soc@vger.kernel.org; Tue, 12 Jan 2016 13:39:53 +0000 (GMT) X-AuditID: cbfec7f5-f79b16d000005389-8d-56950229b2ba Received: from eusync3.samsung.com ( [203.254.199.213]) by eucpsbgm2.samsung.com (EUCPMTA) with SMTP id 9B.47.21385.92205965; Tue, 12 Jan 2016 13:39:53 +0000 (GMT) Content-transfer-encoding: 8BIT Received: from amdc1339.digital.local ([106.116.147.30]) by eusync3.samsung.com (Oracle Communications Messaging Server 7.0.5.31.0 64bit (built May 5 2014)) with ESMTPA id <0O0U0029FDY0O620@eusync3.samsung.com>; Tue, 12 Jan 2016 13:39:53 +0000 (GMT) From: Marek Szyprowski To: dri-devel@lists.freedesktop.org, linux-samsung-soc@vger.kernel.org Cc: Marek Szyprowski , Inki Dae , Daniel Vetter , =?UTF-8?q?Ville=20Syrj=C3=A4l=C3=A4?= , Joonyoung Shim , Seung-Woo Kim , Andrzej Hajda , Krzysztof Kozlowski , Bartlomiej Zolnierkiewicz , Tobias Jakobi , Gustavo Padovan , Benjamin Gaignard , vincent.abriou@st.com, fabien.dessenne@st.com Subject: [PATCH v3 1/3] drm: add generic zpos property Date: Tue, 12 Jan 2016 14:39:18 +0100 Message-id: <1452605960-21194-2-git-send-email-m.szyprowski@samsung.com> X-Mailer: git-send-email 1.9.2 In-reply-to: <1452605960-21194-1-git-send-email-m.szyprowski@samsung.com> References: <1452605960-21194-1-git-send-email-m.szyprowski@samsung.com> X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFprJIsWRmVeSWpSXmKPExsVy+t/xq7qaTFPDDJbeYrO4te4cq8XGGetZ LZoOnWKz+L9tIrPFla/v2SyOrdvOaLHzwS52i0n3J7BYvLh3kcXi9QtDixnn9zFZrD1yl91i xuSXbBZtqz+wWnz/t5DJ4szVAywOAh57vy1g8bhzbQ+bx7yTgR73u48zefw7xu6xc9JeJo++ LasYPZ7+2Mvs8XmTXABnFJdNSmpOZllqkb5dAlfGmv0tbAWXkiuOvtjP1MDYHtTFyMkhIWAi 8enTXVYIW0ziwr31bF2MXBxCAksZJV58/sIEkuAVEJT4MfkeSxcjBwezgLzEkUvZIGFmAXWJ SfMWMUPUNzFJXNr3EmwQm4ChRNfbLjYQW0TATaLp8ExWkCJmgfssElc/H2AHSQgLmEm8uXqC BcRmEVCV6OzfyAaxzENi8u/zbBAXyUn8f7kC7AhOAU+J9tZdzCC2EFDNosaVzBMYBWYhuW8W wn2zkNy3gJF5FaNoamlyQXFSeq6RXnFibnFpXrpecn7uJkZIhH3dwbj0mNUhRgEORiUe3gz2 KWFCrIllxZW5hxglOJiVRHgv/wYK8aYkVlalFuXHF5XmpBYfYpTmYFES5525632IkEB6Yklq dmpqQWoRTJaJg1OqgTFr2gcr3Us7mDn+6ikc+ux1N8btvrnpSU62d9Krl13TeHtlo8gzI9Xr h5dmbG+f2bqkYIXWxcwfUarnFhj+XfrKecGElTtnNf85qKxQLfLn/772CGGH2VxiwbvqCmT+ vxX/+TLiWPwHk9sSix7Xn5YM6FPlW8pq5Lo3/EDrPpFV/mvOP1zsfvWoEktxRqKhFnNRcSIA W5ltNqwCAAA= Sender: linux-samsung-soc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-samsung-soc@vger.kernel.org X-Spam-Status: No, score=-6.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP This patch adds support for generic plane's zpos property property with well-defined semantics: - added zpos properties to drm core and plane state structures - added helpers for normalizing zpos properties of given set of planes - well defined semantics: planes are sorted by zpos values and then plane id value if zpos equals Normalized zpos values are calculated automatically when generic muttable zpos property has been initialized. Drivers can simply use plane_state->normalized_zpos in their atomic_check and/or plane_update callbacks without any additional calls to DRM core. Signed-off-by: Marek Szyprowski --- Documentation/DocBook/gpu.tmpl | 14 ++++- drivers/gpu/drm/drm_atomic.c | 4 ++ drivers/gpu/drm/drm_atomic_helper.c | 116 ++++++++++++++++++++++++++++++++++++ drivers/gpu/drm/drm_crtc.c | 53 ++++++++++++++++ include/drm/drm_crtc.h | 14 +++++ 5 files changed, 199 insertions(+), 2 deletions(-) diff --git a/Documentation/DocBook/gpu.tmpl b/Documentation/DocBook/gpu.tmpl index 6c6e81a9eaf4..f6b7236141b6 100644 --- a/Documentation/DocBook/gpu.tmpl +++ b/Documentation/DocBook/gpu.tmpl @@ -2004,7 +2004,7 @@ void intel_crt_init(struct drm_device *dev) Description/Restrictions - DRM + DRM Generic “rotation” BITMASK @@ -2256,7 +2256,7 @@ void intel_crt_init(struct drm_device *dev) property to suggest an Y offset for a connector - Optional + Optional “scaling mode” ENUM { "None", "Full", "Center", "Full aspect" } @@ -2280,6 +2280,16 @@ void intel_crt_init(struct drm_device *dev) TBD + "zpos" + RANGE + Min=0, Max=255 + Plane + Plane's 'z' position during blending (0 for background, 255 for frontmost). + If two planes assigned to same CRTC have equal zpos values, the plane with higher plane + id is treated as closer to front. Can be IMMUTABLE if driver doesn't support changing + planes' order. + + i915 Generic "Broadcast RGB" diff --git a/drivers/gpu/drm/drm_atomic.c b/drivers/gpu/drm/drm_atomic.c index 6a21e5c378c1..97bb069cb6a3 100644 --- a/drivers/gpu/drm/drm_atomic.c +++ b/drivers/gpu/drm/drm_atomic.c @@ -614,6 +614,8 @@ int drm_atomic_plane_set_property(struct drm_plane *plane, state->src_h = val; } else if (property == config->rotation_property) { state->rotation = val; + } else if (property == config->zpos_property) { + state->zpos = val; } else if (plane->funcs->atomic_set_property) { return plane->funcs->atomic_set_property(plane, state, property, val); @@ -670,6 +672,8 @@ drm_atomic_plane_get_property(struct drm_plane *plane, *val = state->src_h; } else if (property == config->rotation_property) { *val = state->rotation; + } else if (property == config->zpos_property) { + *val = state->zpos; } else if (plane->funcs->atomic_get_property) { return plane->funcs->atomic_get_property(plane, state, property, val); } else { diff --git a/drivers/gpu/drm/drm_atomic_helper.c b/drivers/gpu/drm/drm_atomic_helper.c index d0d4b2ff7c21..257946fac94b 100644 --- a/drivers/gpu/drm/drm_atomic_helper.c +++ b/drivers/gpu/drm/drm_atomic_helper.c @@ -31,6 +31,7 @@ #include #include #include +#include /** * DOC: overview @@ -507,6 +508,117 @@ drm_atomic_helper_check_modeset(struct drm_device *dev, } EXPORT_SYMBOL(drm_atomic_helper_check_modeset); +static int drm_atomic_state_zpos_cmp(const void *a, const void *b) +{ + const struct drm_plane_state *sa = *(struct drm_plane_state **)a; + const struct drm_plane_state *sb = *(struct drm_plane_state **)b; + int zpos_a = (sa->zpos << 16) + sa->plane->base.id; + int zpos_b = (sb->zpos << 16) + sb->plane->base.id; + + return zpos_a - zpos_b; +} + +/** + * drm_atomic_helper_crtc_normalize_zpos - calculate normalized zpos values + * @crtc: crtc with planes, which have to be considered for normalization + * @crtc_state: new atomic state to apply + * + * This function checks new states of all planes assigned to given crtc and + * calculates normalized zpos value for them. Planes are compared first by their + * zpos values, then by plane id (if zpos equals). Plane with lowest zpos value + * is at the bottom. The plane_state->normalized_zpos is then filled with uniqe + * values from 0 to number of active planes in crtc minus one. + * + * RETURNS + * Zero for success or -errno + */ +int drm_atomic_helper_crtc_normalize_zpos(struct drm_crtc *crtc, + struct drm_crtc_state *crtc_state) +{ + struct drm_atomic_state *state = crtc_state->state; + struct drm_device *dev = crtc->dev; + int total_planes = dev->mode_config.num_total_plane; + struct drm_plane_state **states; + struct drm_plane *plane; + int i, n = 0; + int ret = 0; + + DRM_DEBUG_ATOMIC("[CRTC:%d:%s] calculating normalized zpos values\n", + crtc->base.id, crtc->name); + + states = kmalloc(total_planes * sizeof(*states), GFP_KERNEL); + if (!states) + return -ENOMEM; + + /* + * Normalization process might create new states for planes which + * normalized_zpos has to be recalculated. + */ + drm_for_each_plane_mask(plane, dev, crtc_state->plane_mask) { + struct drm_plane_state *plane_state = + drm_atomic_get_plane_state(state, plane); + if (IS_ERR(plane_state)) { + ret = PTR_ERR(plane_state); + goto fail; + } + states[n++] = plane_state; + DRM_DEBUG_ATOMIC("[PLANE:%d:%s] processing zpos value %d\n", + plane->base.id, plane->name, plane_state->zpos); + } + + sort(states, n, sizeof(*states), drm_atomic_state_zpos_cmp, NULL); + + for (i = 0; i < n; i++) { + plane = states[i]->plane; + states[i]->normalized_zpos = i; + DRM_DEBUG_ATOMIC("[PLANE:%d:%s] normalized zpos value %d\n", + plane->base.id, plane->name, i); + } +fail: + kfree(states); + return ret; +} +EXPORT_SYMBOL(drm_atomic_helper_crtc_normalize_zpos); + +static int drm_atomic_helper_normalize_zpos(struct drm_device *dev, + struct drm_atomic_state *state) +{ + struct drm_crtc *crtc; + struct drm_crtc_state *crtc_state; + struct drm_plane *plane; + struct drm_plane_state *plane_state; + int i, ret = 0; + + /* + * If zpos_property is not initialized, then it makes no sense + * to calculate normalized zpos values. + */ + if (!dev->mode_config.zpos_property) + return 0; + + for_each_plane_in_state(state, plane, plane_state, i) { + crtc = plane_state->crtc; + if (!crtc) + continue; + if (plane->state->zpos != plane_state->zpos) { + crtc_state = + drm_atomic_get_existing_crtc_state(state, crtc); + crtc_state->zpos_changed = true; + } + } + + for_each_crtc_in_state(state, crtc, crtc_state, i) { + if (crtc_state->plane_mask != crtc->state->plane_mask || + crtc_state->zpos_changed) { + ret = drm_atomic_helper_crtc_normalize_zpos(crtc, + crtc_state); + if (ret) + return ret; + } + } + return 0; +} + /** * drm_atomic_helper_check_planes - validate state object for planes changes * @dev: DRM device @@ -532,6 +644,10 @@ drm_atomic_helper_check_planes(struct drm_device *dev, struct drm_plane_state *plane_state; int i, ret = 0; + ret = drm_atomic_helper_normalize_zpos(dev, state); + if (ret) + return ret; + for_each_plane_in_state(state, plane, plane_state, i) { const struct drm_plane_helper_funcs *funcs; diff --git a/drivers/gpu/drm/drm_crtc.c b/drivers/gpu/drm/drm_crtc.c index 62fa95fa5471..54a21e7c1ca5 100644 --- a/drivers/gpu/drm/drm_crtc.c +++ b/drivers/gpu/drm/drm_crtc.c @@ -5880,6 +5880,59 @@ struct drm_property *drm_mode_create_rotation_property(struct drm_device *dev, EXPORT_SYMBOL(drm_mode_create_rotation_property); /** + * drm_mode_create_zpos_property - create muttable zpos property + * @dev: DRM device + * + * This function initializes generic muttable zpos property and enables support + * for it in drm core. Drivers can then attach this property to planes to enable + * support for configurable planes arrangement during blending operation. + * Drivers can also use drm_atomic_helper_normalize_zpos() function to calculate + * drm_plane_state->normalized_zpos values. + * + * Returns: + * Zero on success, negative errno on failure. + */ +int drm_mode_create_zpos_property(struct drm_device *dev) +{ + struct drm_property *prop; + + prop = drm_property_create_range(dev, 0, "zpos", 0, 255); + if (!prop) + return -ENOMEM; + + dev->mode_config.zpos_property = prop; + return 0; +} +EXPORT_SYMBOL(drm_mode_create_zpos_property); + +/** + * drm_plane_create_zpos_property - create immuttable zpos property + * @dev: DRM device + * + * This function initializes generic immuttable zpos property and enables + * support for it in drm core. Using this property driver lets userspace + * to get the arrangement of the planes for blending operation and notifies + * it that the hardware (or driver) doesn't support changing of the planes' + * order. + * + * Returns: + * Zero on success, negative errno on failure. + */ +int drm_mode_create_zpos_immutable_property(struct drm_device *dev) +{ + struct drm_property *prop; + + prop = drm_property_create_range(dev, DRM_MODE_PROP_IMMUTABLE, "zpos", + 0, 255); + if (!prop) + return -ENOMEM; + + dev->mode_config.zpos_immutable_property = prop; + return 0; +} +EXPORT_SYMBOL(drm_mode_create_zpos_immutable_property); + +/** * DOC: Tile group * * Tile groups are used to represent tiled monitors with a unique diff --git a/include/drm/drm_crtc.h b/include/drm/drm_crtc.h index 3b040b355472..0607ad2ce918 100644 --- a/include/drm/drm_crtc.h +++ b/include/drm/drm_crtc.h @@ -305,6 +305,7 @@ struct drm_plane_helper_funcs; * @mode_changed: crtc_state->mode or crtc_state->enable has been changed * @active_changed: crtc_state->active has been toggled. * @connectors_changed: connectors to this crtc have been updated + * @zpos_changed: zpos values of planes on this crtc have been updated * @plane_mask: bitmask of (1 << drm_plane_index(plane)) of attached planes * @last_vblank_count: for helpers and drivers to capture the vblank of the * update to ensure framebuffer cleanup isn't done too early @@ -331,6 +332,7 @@ struct drm_crtc_state { bool mode_changed : 1; bool active_changed : 1; bool connectors_changed : 1; + bool zpos_changed : 1; /* attached planes bitmask: * WARNING: transitional helpers do not maintain plane_mask so @@ -1243,6 +1245,9 @@ struct drm_connector { * plane (in 16.16) * @src_w: width of visible portion of plane (in 16.16) * @src_h: height of visible portion of plane (in 16.16) + * @zpos: priority of the given plane on crtc (optional) + * @normalized_zpos: normalized value of zpos: uniqe, range from 0 to + * (number of planes - 1) for given crtc * @state: backpointer to global drm_atomic_state */ struct drm_plane_state { @@ -1263,6 +1268,10 @@ struct drm_plane_state { /* Plane rotation */ unsigned int rotation; + /* Plane zpos */ + unsigned int zpos; + unsigned int normalized_zpos; + struct drm_atomic_state *state; }; @@ -2083,6 +2092,8 @@ struct drm_mode_config { struct drm_property *tile_property; struct drm_property *plane_type_property; struct drm_property *rotation_property; + struct drm_property *zpos_property; + struct drm_property *zpos_immutable_property; struct drm_property *prop_src_x; struct drm_property *prop_src_y; struct drm_property *prop_src_w; @@ -2484,6 +2495,9 @@ extern struct drm_property *drm_mode_create_rotation_property(struct drm_device extern unsigned int drm_rotation_simplify(unsigned int rotation, unsigned int supported_rotations); +extern int drm_mode_create_zpos_property(struct drm_device *dev); +extern int drm_mode_create_zpos_immutable_property(struct drm_device *dev); + /* Helpers */ static inline struct drm_plane *drm_plane_find(struct drm_device *dev,