From patchwork Wed Jan 27 14:44:39 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Marek Szyprowski X-Patchwork-Id: 60629 Delivered-To: patch@linaro.org Received: by 10.112.130.2 with SMTP id oa2csp2623690lbb; Wed, 27 Jan 2016 06:45:01 -0800 (PST) X-Received: by 10.66.141.229 with SMTP id rr5mr11550525pab.123.1453905901250; Wed, 27 Jan 2016 06:45:01 -0800 (PST) Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id q63si5237604pfi.141.2016.01.27.06.45.00; Wed, 27 Jan 2016 06:45:01 -0800 (PST) Received-SPF: pass (google.com: best guess record for domain of linux-samsung-soc-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of linux-samsung-soc-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-samsung-soc-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933045AbcA0OpA (ORCPT + 4 others); Wed, 27 Jan 2016 09:45:00 -0500 Received: from mailout1.w1.samsung.com ([210.118.77.11]:51140 "EHLO mailout1.w1.samsung.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932725AbcA0Oo5 (ORCPT ); Wed, 27 Jan 2016 09:44:57 -0500 MIME-version: 1.0 Content-type: text/plain; charset=UTF-8 Received: from eucpsbgm1.samsung.com (unknown [203.254.199.244]) by mailout1.w1.samsung.com (Oracle Communications Messaging Server 7.0.5.31.0 64bit (built May 5 2014)) with ESMTP id <0O1M00I9D8YUEM10@mailout1.w1.samsung.com> for linux-samsung-soc@vger.kernel.org; Wed, 27 Jan 2016 14:44:55 +0000 (GMT) X-AuditID: cbfec7f4-f79026d00000418a-40-56a8d7e6fc76 Received: from eusync1.samsung.com ( [203.254.199.211]) by eucpsbgm1.samsung.com (EUCPMTA) with SMTP id 33.98.16778.6E7D8A65; Wed, 27 Jan 2016 14:44:54 +0000 (GMT) Content-transfer-encoding: 8BIT Received: from amdc1339.digital.local ([106.116.147.30]) by eusync1.samsung.com (Oracle Communications Messaging Server 7.0.5.31.0 64bit (built May 5 2014)) with ESMTPA id <0O1M00IVT8YO6E70@eusync1.samsung.com>; Wed, 27 Jan 2016 14:44:54 +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 v5 1/5] drm: add generic zpos property Date: Wed, 27 Jan 2016 15:44:39 +0100 Message-id: <1453905883-6807-2-git-send-email-m.szyprowski@samsung.com> X-Mailer: git-send-email 1.9.2 In-reply-to: <1453905883-6807-1-git-send-email-m.szyprowski@samsung.com> References: <1453905883-6807-1-git-send-email-m.szyprowski@samsung.com> X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFprJIsWRmVeSWpSXmKPExsVy+t/xy7rPrq8IM5jdYmBxa905VouNM9az WjQdOsVm8X/bRGaLK1/fs1kcW7ed0WLng13sFpPuT2CxeHHvIovF6xeGFjPO72OyWHvkLrvF jMkv2SzaVn9gtfj+byGTxZmrB1gcBDz2flvA4nHn2h42j3knAz3udx9n8vh3jN1j56S9TB59 W1Yxejz9sZfZ4/MmuQDOKC6blNSczLLUIn27BK6MvmPlBdubGCuunlvJ3MDYkt3FyMkhIWAi cWdrNyOELSZx4d56ti5GLg4hgaWMEud/PGMCSfAKCEr8mHyPpYuRg4NZQF7iyCWwXmYBdYlJ 8xYxQ9Q3MUnsvzgfrJ5NwFCi620XG4gtIuAm0XR4JitIEbPAfRaJq58PsIMkhAXMJBatbQVr YBFQlXj0YisjxDJ3icZJn6AukpP4/3IFWA2ngIfEzZnrweJCQDX3Lk5hncAoMAvJfbMQ7puF 5L4FjMyrGEVTS5MLipPScw31ihNzi0vz0vWS83M3MUIi7MsOxsXHrA4xCnAwKvHw3ti/PEyI NbGsuDL3EKMEB7OSCC/rpRVhQrwpiZVVqUX58UWlOanFhxilOViUxHnn7nofIiSQnliSmp2a WpBaBJNl4uCUamCUiZ+WtlzlSPzfJxM/Pn3f5coRc9Q4QfmZ2lQZzcncup9dnG7uXR6tqXLJ abb0vW/3vW3CVFsvLDNf9KiUh83N7eXynbP5+c5xiYXPYNvs8fDN9NhJvHk6qVlySZvd455s iTPn2hMnt6W8JPyd0pquTYfrWIwXNnf7/pzFNrf17XUm6QuuSsuUWIozEg21mIuKEwFpFUrY rAIAAA== Sender: linux-samsung-soc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-samsung-soc@vger.kernel.org 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 Tested-by: Benjamin Gaignard --- Documentation/DocBook/gpu.tmpl | 14 ++- drivers/gpu/drm/Makefile | 2 +- drivers/gpu/drm/drm_atomic.c | 4 + drivers/gpu/drm/drm_atomic_helper.c | 6 + drivers/gpu/drm/drm_blend.c | 227 ++++++++++++++++++++++++++++++++++++ drivers/gpu/drm/drm_crtc_internal.h | 3 + include/drm/drm_crtc.h | 17 +++ 7 files changed, 270 insertions(+), 3 deletions(-) create mode 100644 drivers/gpu/drm/drm_blend.c -- 1.9.2 -- To unsubscribe from this list: send the line "unsubscribe linux-samsung-soc" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html diff --git a/Documentation/DocBook/gpu.tmpl b/Documentation/DocBook/gpu.tmpl index a8669330b456..ae7d913adf60 100644 --- a/Documentation/DocBook/gpu.tmpl +++ b/Documentation/DocBook/gpu.tmpl @@ -1816,7 +1816,7 @@ void intel_crt_init(struct drm_device *dev) Description/Restrictions - DRM + DRM Generic “rotation” BITMASK @@ -2068,7 +2068,7 @@ 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" } @@ -2092,6 +2092,16 @@ void intel_crt_init(struct drm_device *dev) TBD + "zpos" + RANGE + Min=0, Max= driver dependent + Plane + Plane's 'z' position during blending operation (0 for background, highest 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. Exact value range is driver dependent. + + i915 Generic "Broadcast RGB" diff --git a/drivers/gpu/drm/Makefile b/drivers/gpu/drm/Makefile index 61766dec6a8d..eeefaba1c092 100644 --- a/drivers/gpu/drm/Makefile +++ b/drivers/gpu/drm/Makefile @@ -2,7 +2,7 @@ # Makefile for the drm device driver. This driver provides support for the # Direct Rendering Infrastructure (DRI) in XFree86 4.1.0 and higher. -drm-y := drm_auth.o drm_bufs.o drm_cache.o \ +drm-y := drm_auth.o drm_bufs.o drm_blend.o drm_cache.o \ drm_context.o drm_dma.o \ drm_fops.o drm_gem.o drm_ioctl.o drm_irq.o \ drm_lock.o drm_memory.o drm_drv.o drm_vm.o \ diff --git a/drivers/gpu/drm/drm_atomic.c b/drivers/gpu/drm/drm_atomic.c index 3f74193885f1..a19201efb7d1 100644 --- a/drivers/gpu/drm/drm_atomic.c +++ b/drivers/gpu/drm/drm_atomic.c @@ -630,6 +630,8 @@ 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); @@ -686,6 +688,8 @@ 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 53db2d9120be..9fbfb672b317 100644 --- a/drivers/gpu/drm/drm_atomic_helper.c +++ b/drivers/gpu/drm/drm_atomic_helper.c @@ -32,6 +32,8 @@ #include #include +#include "drm_crtc_internal.h" + /** * DOC: overview * @@ -530,6 +532,10 @@ 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_blend.c b/drivers/gpu/drm/drm_blend.c new file mode 100644 index 000000000000..cdcb647c8ed9 --- /dev/null +++ b/drivers/gpu/drm/drm_blend.c @@ -0,0 +1,227 @@ +/* + * Copyright (C) 2016 Samsung Electronics Co.Ltd + * Authors: + * Marek Szyprowski + * + * DRM core plane blending related functions + * + * Permission to use, copy, modify, distribute, and sell this software and its + * documentation for any purpose is hereby granted without fee, provided that + * the above copyright notice appear in all copies and that both that copyright + * notice and this permission notice appear in supporting documentation, and + * that the name of the copyright holders not be used in advertising or + * publicity pertaining to distribution of the software without specific, + * written prior permission. The copyright holders make no representations + * about the suitability of this software for any purpose. It is provided "as + * is" without express or implied warranty. + * + * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, + * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO + * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR + * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, + * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER + * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE + * OF THIS SOFTWARE. + */ +#include +#include +#include +#include +#include +#include + +#include "drm_internal.h" + +/** + * drm_mode_create_zpos_property - create muttable zpos property + * @dev: DRM device + * @min: minimal possible value of zpos property + * @max: maximal possible value of zpos property + * + * 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. + * Once muttable zpos property has been enabled, the DRM core will automatically + * calculate drm_plane_state->normalized_zpos values. Usually min should be set + * to 0 and max to maximal number of planes for given crtc - 1. + * + * If zpos of some planes cannot be changed (like fixed backgroud or + * cursor/topmost planes), driver should adjust min/max values and assign those + * planes immutable zpos property with lower or higher values (for more + * information, see drm_mode_create_zpos_immutable_property() function). In such + * case driver should also assign proper initial zpos values for all planes in + * its plane_reset() callback, so the planes will be always sorted properly. + * + * Returns: + * Zero on success, negative errno on failure. + */ +int drm_mode_create_zpos_property(struct drm_device *dev, unsigned int min, + unsigned int max) +{ + struct drm_property *prop; + + prop = drm_property_create_range(dev, 0, "zpos", min, max); + if (!prop) + return -ENOMEM; + + dev->mode_config.zpos_property = prop; + return 0; +} +EXPORT_SYMBOL(drm_mode_create_zpos_property); + +/** + * drm_mode_create_zpos_immutable_property - create immuttable zpos property + * @dev: DRM device + * @min: minimal possible value of zpos property + * @max: maximal possible value of zpos property + * + * 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, + unsigned int min, unsigned int max) +{ + struct drm_property *prop; + + prop = drm_property_create_range(dev, DRM_MODE_PROP_IMMUTABLE, "zpos", + min, max); + if (!prop) + return -ENOMEM; + + dev->mode_config.zpos_immutable_property = prop; + return 0; +} +EXPORT_SYMBOL(drm_mode_create_zpos_immutable_property); + +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); + } + crtc_state->zpos_changed = true; + +fail: + kfree(states); + return ret; +} +EXPORT_SYMBOL(drm_atomic_helper_crtc_normalize_zpos); + +/** + * drm_atomic_helper_normalize_zpos - calculate normalized zpos values for all + * crtcs + * @dev: DRM device + * @state: atomic state of DRM device + * + * This function calculates normalized zpos value for all modified planes in + * the provided atomic state of DRM device. For more information, see + * drm_atomic_helper_crtc_normalize_zpos() function. + * + * RETURNS + * Zero for success or -errno + */ +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; +} +EXPORT_SYMBOL(drm_atomic_helper_normalize_zpos); diff --git a/drivers/gpu/drm/drm_crtc_internal.h b/drivers/gpu/drm/drm_crtc_internal.h index 247dc8b62564..c87cd956b74b 100644 --- a/drivers/gpu/drm/drm_crtc_internal.h +++ b/drivers/gpu/drm/drm_crtc_internal.h @@ -42,3 +42,6 @@ int drm_atomic_get_property(struct drm_mode_object *obj, int drm_mode_atomic_ioctl(struct drm_device *dev, void *data, struct drm_file *file_priv); +/* drm_blend.c */ +int drm_atomic_helper_normalize_zpos(struct drm_device *dev, + struct drm_atomic_state *state); diff --git a/include/drm/drm_crtc.h b/include/drm/drm_crtc.h index c65a212db77e..4f32a358d631 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 * @connector_mask: bitmask of (1 << drm_connector_index(connector)) of attached connectors * @last_vblank_count: for helpers and drivers to capture the vblank of the @@ -332,6 +333,7 @@ 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 @@ -1247,6 +1249,9 @@ 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 { @@ -1267,6 +1272,10 @@ struct drm_plane_state { /* Plane rotation */ unsigned int rotation; + /* Plane zpos */ + unsigned int zpos; + unsigned int normalized_zpos; + struct drm_atomic_state *state; }; @@ -2087,6 +2096,8 @@ 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; @@ -2488,6 +2499,12 @@ 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, + unsigned int min, unsigned int max); +extern int drm_mode_create_zpos_immutable_property(struct drm_device *dev, + unsigned int min, + unsigned int max); + /* Helpers */ static inline struct drm_plane *drm_plane_find(struct drm_device *dev,