From patchwork Tue Jan 20 16:38:44 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ajay Kumar X-Patchwork-Id: 5670701 Return-Path: X-Original-To: patchwork-linux-samsung-soc@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 51B14C058D for ; Tue, 20 Jan 2015 16:47:06 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 7B916203C4 for ; Tue, 20 Jan 2015 16:47:04 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 4D4DA20490 for ; Tue, 20 Jan 2015 16:47:02 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755431AbbATQq7 (ORCPT ); Tue, 20 Jan 2015 11:46:59 -0500 Received: from mailout1.samsung.com ([203.254.224.24]:8232 "EHLO mailout1.samsung.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755425AbbATQq4 (ORCPT ); Tue, 20 Jan 2015 11:46:56 -0500 Received: from epcpsbgr2.samsung.com (u142.gpu120.samsung.co.kr [203.254.230.142]) by mailout1.samsung.com (Oracle Communications Messaging Server 7u4-24.01 (7.0.4.24.0) 64bit (built Nov 17 2011)) with ESMTP id <0NIH00NZ9IM64H80@mailout1.samsung.com>; Wed, 21 Jan 2015 01:46:54 +0900 (KST) Received: from epcpsbgm2.samsung.com ( [172.20.52.124]) by epcpsbgr2.samsung.com (EPCPMTA) with SMTP id 86.1C.11124.E768EB45; Wed, 21 Jan 2015 01:46:54 +0900 (KST) X-AuditID: cbfee68e-f79b46d000002b74-cb-54be867e8ca4 Received: from epmmp2 ( [203.254.227.17]) by epcpsbgm2.samsung.com (EPCPMTA) with SMTP id 71.89.09430.E768EB45; Wed, 21 Jan 2015 01:46:54 +0900 (KST) Received: from chromebld-server.sisodomain.com ([107.108.73.106]) by mmp2.samsung.com (Oracle Communications Messaging Server 7u4-24.01(7.0.4.24.0) 64bit (built Nov 17 2011)) with ESMTPA id <0NIH00K6NILOY370@mmp2.samsung.com>; Wed, 21 Jan 2015 01:46:53 +0900 (KST) From: Ajay Kumar To: dri-devel@lists.freedesktop.org, linux-samsung-soc@vger.kernel.org, linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org Cc: kgene.kim@samsung.com, inki.dae@samsung.com, thierry.reding@gmail.com, daniel.vetter@ffwll.ch, seanpaul@google.com, ajaynumb@gmail.com, jg1.han@samsung.com, bhushan.r@samsung.com, prashanth.g@samsung.com, Ajay Kumar Subject: [PATCH 03/14] drm/bridge: make bridge registration independent of drm flow Date: Tue, 20 Jan 2015 22:08:44 +0530 Message-id: <1421771935-31618-4-git-send-email-ajaykumar.rs@samsung.com> X-Mailer: git-send-email 2.2.0 In-reply-to: <1421771935-31618-1-git-send-email-ajaykumar.rs@samsung.com> References: <1421771935-31618-1-git-send-email-ajaykumar.rs@samsung.com> X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFmpnkeLIzCtJLcpLzFFi42JZI2JSo1vXti/EYOlWCYsD7w+yWGx4s5DZ YtnafywWCx/eZbaYf+Qcq8WVr+/ZLCbdn8BicXnhJVaL3gVX2Sw2Pb7GajHj/D4mi1WHN7Bb zD2Ya/Fz1zwWBz6Pvd8WsHjsnHWX3WPBplKP+93HmTw2L6n36NuyitHj8ya5APYoLpuU1JzM stQifbsEroyzt+6wFyxaxlhx9OE2pgbGp12MXYycHBICJhIn3+9lg7DFJC7cWw9mCwksZZT4 1SgCU3N0wj+gei6g+HRGiZ4V36GKJjBJtD1NArHZBLQltk2/yQJiiwh0MUpsO6gO0sAs8IdR 4vOv/WDbhAVCJd4+/MgMYrMIqEosWNMKFucV8JBYNXkhE8Q2OYkttx6xg9icAp4SOz5cZYVY 5iGxeP1hZpChEgK32CUOLprJAjFIQOLb5ENANgdQQlZi0wFmiDmSEgdX3GCZwCi8gJFhFaNo akFyQXFSepGRXnFibnFpXrpecn7uJkZg/Jz+96xvB+PNA9aHGAU4GJV4eF+u2hsixJpYVlyZ e4jRFGjDRGYp0eR8YJTmlcQbGpsZWZiamBobmVuaKYnzJkj9DBYSSE8sSc1OTS1ILYovKs1J LT7EyMTBKdXAKG9/naPVdOrWW1WpRrrpUiL5Ma8XCa4NzA65t2Tn1xuzJ/I4s9QF3QhI3JzO HH6vREBuVdZm6VM2Usrlq5ap9yQcCtc9OkOHwaHjSej3uyVKYea9QUlzL3aaX9xTnVO4Vv/h vo+lGeVKLFc2TumwW5egl5Q3S7f3SztHg1/EdIetvbce+69UYinOSDTUYi4qTgQAJ/kNipoC AAA= X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFrrEIsWRmVeSWpSXmKPExsVy+t9jQd26tn0hBi/3clsceH+QxWLDm4XM FsvW/mOxWPjwLrPF/CPnWC2ufH3PZjHp/gQWi8sLL7Fa9C64ymax6fE1VosZ5/cxWaw6vIHd Yu7BXIufu+axOPB57P22gMVj56y77B4LNpV63O8+zuSxeUm9R9+WVYwenzfJBbBHNTDaZKQm pqQWKaTmJeenZOal2yp5B8c7x5uaGRjqGlpamCsp5CXmptoqufgE6Lpl5gBdrKRQlphTChQK SCwuVtK3wzQhNMRN1wKmMULXNyQIrsfIAA0krGHMOHvrDnvBomWMFUcfbmNqYHzaxdjFyMkh IWAicXTCPyhbTOLCvfVsXYxcHEIC0xklelZ8ZwNJCAlMYJJoe5oEYrMJaEtsm36TBcQWEehi lNh2UB2kgVngD6PE51/7wSYJC4RKvH34kRnEZhFQlViwphUszivgIbFq8kImiG1yEltuPWIH sTkFPCV2fLjKCrHMQ2Lx+sPMExh5FzAyrGIUTS1ILihOSs810itOzC0uzUvXS87P3cQIjs9n 0jsYVzVYHGIU4GBU4uF1WLs3RIg1say4MvcQowQHs5IIL1PdvhAh3pTEyqrUovz4otKc1OJD jKZAV01klhJNzgemjrySeENjE3NTY1NLEwsTM0slcV4l+7YQIYH0xJLU7NTUgtQimD4mDk6p BkZTtrgUXUGDz0pNpfZbSl4ZVQc5x0XuO5b72sxK0yyZte8uGxN7trWjlF6l972N8/mmrCze lOj93kr02h6eq17d/bWycisX6M2rVAu2O/h9y9wXM6ZUZ1jYzuU3i/57znTTP96l6Yn9Seeu VOu5MEaKM68VaJmuP+Xw6uWdS2z+aXx4YPxLQYmlOCPRUIu5qDgRAJ6Z3ablAgAA DLP-Filter: Pass X-MTR: 20000000000000000@CPGS X-CFilter-Loop: Reflected 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, T_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 Currently, third party bridge drivers(ptn3460) are dependent on the corresponding encoder driver init, since bridge driver needs a drm_device pointer to finish drm initializations. The encoder driver passes the drm_device pointer to the bridge driver. Because of this dependency, third party drivers like ptn3460 doesn't adhere to the driver model. In this patch, we reframe the bridge registration framework so that bridge initialization is split into 2 steps, and bridge registration happens independent of drm flow: --Step 1: gather all the bridge settings independent of drm and add the bridge onto a global list of bridges. --Step 2: when the encoder driver is probed, call drm_bridge_attach for the corresponding bridge so that the bridge receives drm_device pointer and continues with connector and other drm initializations. The old set of bridge helpers are removed, and a set of new helpers are added to accomplish the 2 step initialization. The bridge devices register themselves onto global list of bridges when they get probed by calling "drm_bridge_add". The parent encoder driver waits till the bridge is available in the lookup table(by calling "of_drm_find_bridge") and then continues with its initialization. The encoder driver should also call "drm_bridge_attach" to pass on the drm_device to the bridge object. drm_bridge_attach inturn calls "bridge->funcs->attach" so that bridge can continue with drm related initializations. Signed-off-by: Ajay Kumar Acked-by: Inki Dae Tested-by: Rahul Sharma Tested-by: Javier Martinez Canillas Tested-by: Gustavo Padovan Tested-by: Sjoerd Simons --- drivers/gpu/drm/Makefile | 2 +- drivers/gpu/drm/bridge/ptn3460.c | 27 +++++----- drivers/gpu/drm/drm_bridge.c | 91 ++++++++++++++++++++++++++++++++ drivers/gpu/drm/drm_crtc.c | 67 ----------------------- drivers/gpu/drm/msm/hdmi/hdmi.c | 4 +- drivers/gpu/drm/msm/hdmi/hdmi.h | 1 + drivers/gpu/drm/msm/hdmi/hdmi_bridge.c | 6 +-- drivers/gpu/drm/sti/sti_hda.c | 10 +--- drivers/gpu/drm/sti/sti_hdmi.c | 10 +--- include/drm/bridge/ptn3460.h | 8 +++ include/drm/drm_crtc.h | 26 ++++----- 11 files changed, 133 insertions(+), 119 deletions(-) create mode 100644 drivers/gpu/drm/drm_bridge.c diff --git a/drivers/gpu/drm/Makefile b/drivers/gpu/drm/Makefile index e620807..c83ef2d 100644 --- a/drivers/gpu/drm/Makefile +++ b/drivers/gpu/drm/Makefile @@ -14,7 +14,7 @@ drm-y := drm_auth.o drm_bufs.o drm_cache.o \ drm_info.o drm_debugfs.o drm_encoder_slave.o \ drm_trace_points.o drm_global.o drm_prime.o \ drm_rect.o drm_vma_manager.o drm_flip_work.o \ - drm_modeset_lock.o drm_atomic.o + drm_modeset_lock.o drm_atomic.o drm_bridge.o drm-$(CONFIG_COMPAT) += drm_ioc32.o drm-$(CONFIG_DRM_GEM_CMA_HELPER) += drm_gem_cma_helper.o diff --git a/drivers/gpu/drm/bridge/ptn3460.c b/drivers/gpu/drm/bridge/ptn3460.c index a2ddc8d..4a818c1 100644 --- a/drivers/gpu/drm/bridge/ptn3460.c +++ b/drivers/gpu/drm/bridge/ptn3460.c @@ -176,24 +176,11 @@ static void ptn3460_post_disable(struct drm_bridge *bridge) { } -static void ptn3460_bridge_destroy(struct drm_bridge *bridge) -{ - struct ptn3460_bridge *ptn_bridge = bridge_to_ptn3460(bridge); - - drm_bridge_cleanup(bridge); - if (gpio_is_valid(ptn_bridge->gpio_pd_n)) - gpio_free(ptn_bridge->gpio_pd_n); - if (gpio_is_valid(ptn_bridge->gpio_rst_n)) - gpio_free(ptn_bridge->gpio_rst_n); - /* Nothing else to free, we've got devm allocated memory */ -} - static struct drm_bridge_funcs ptn3460_bridge_funcs = { .pre_enable = ptn3460_pre_enable, .enable = ptn3460_enable, .disable = ptn3460_disable, .post_disable = ptn3460_post_disable, - .destroy = ptn3460_bridge_destroy, }; static int ptn3460_get_modes(struct drm_connector *connector) @@ -314,7 +301,7 @@ int ptn3460_init(struct drm_device *dev, struct drm_encoder *encoder, } ptn_bridge->bridge.funcs = &ptn3460_bridge_funcs; - ret = drm_bridge_init(dev, &ptn_bridge->bridge); + ret = drm_bridge_attach(dev, &ptn_bridge->bridge); if (ret) { DRM_ERROR("Failed to initialize bridge with drm\n"); goto err; @@ -343,3 +330,15 @@ err: return ret; } EXPORT_SYMBOL(ptn3460_init); + +void ptn3460_destroy(struct drm_bridge *bridge) +{ + struct ptn3460_bridge *ptn_bridge = bridge->driver_private; + + if (gpio_is_valid(ptn_bridge->gpio_pd_n)) + gpio_free(ptn_bridge->gpio_pd_n); + if (gpio_is_valid(ptn_bridge->gpio_rst_n)) + gpio_free(ptn_bridge->gpio_rst_n); + /* Nothing else to free, we've got devm allocated memory */ +} +EXPORT_SYMBOL(ptn3460_destroy); diff --git a/drivers/gpu/drm/drm_bridge.c b/drivers/gpu/drm/drm_bridge.c new file mode 100644 index 0000000..d1187e5 --- /dev/null +++ b/drivers/gpu/drm/drm_bridge.c @@ -0,0 +1,91 @@ +/* + * Copyright (c) 2014 Samsung Electronics Co., Ltd + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sub license, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice (including the + * next paragraph) shall be included in all copies or substantial portions + * of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER + * DEALINGS IN THE SOFTWARE. + */ + +#include +#include + +#include + +#include "drm/drmP.h" + +static DEFINE_MUTEX(bridge_lock); +static LIST_HEAD(bridge_list); + +int drm_bridge_add(struct drm_bridge *bridge) +{ + mutex_lock(&bridge_lock); + list_add_tail(&bridge->list, &bridge_list); + mutex_unlock(&bridge_lock); + + return 0; +} +EXPORT_SYMBOL(drm_bridge_add); + +void drm_bridge_remove(struct drm_bridge *bridge) +{ + mutex_lock(&bridge_lock); + list_del_init(&bridge->list); + mutex_unlock(&bridge_lock); +} +EXPORT_SYMBOL(drm_bridge_remove); + +extern int drm_bridge_attach(struct drm_device *dev, struct drm_bridge *bridge) +{ + if (!dev || !bridge) + return -EINVAL; + + if (bridge->dev) + return -EBUSY; + + bridge->dev = dev; + + if (bridge->funcs->attach) + return bridge->funcs->attach(bridge); + + return 0; +} +EXPORT_SYMBOL(drm_bridge_attach); + +#ifdef CONFIG_OF +struct drm_bridge *of_drm_find_bridge(struct device_node *np) +{ + struct drm_bridge *bridge; + + mutex_lock(&bridge_lock); + + list_for_each_entry(bridge, &bridge_list, list) { + if (bridge->of_node == np) { + mutex_unlock(&bridge_lock); + return bridge; + } + } + + mutex_unlock(&bridge_lock); + return NULL; +} +EXPORT_SYMBOL(of_drm_find_bridge); +#endif + +MODULE_AUTHOR("Ajay Kumar "); +MODULE_DESCRIPTION("DRM bridge infrastructure"); +MODULE_LICENSE("GPL and additional rights"); diff --git a/drivers/gpu/drm/drm_crtc.c b/drivers/gpu/drm/drm_crtc.c index af57103..bb8e31e 100644 --- a/drivers/gpu/drm/drm_crtc.c +++ b/drivers/gpu/drm/drm_crtc.c @@ -1028,58 +1028,6 @@ void drm_connector_unplug_all(struct drm_device *dev) EXPORT_SYMBOL(drm_connector_unplug_all); /** - * drm_bridge_init - initialize a drm transcoder/bridge - * @dev: drm device - * @bridge: transcoder/bridge to set up - * - * Initialises a preallocated bridge. Bridges should be - * subclassed as part of driver connector objects. - * - * Returns: - * Zero on success, error code on failure. - */ -int drm_bridge_init(struct drm_device *dev, struct drm_bridge *bridge) -{ - int ret; - - drm_modeset_lock_all(dev); - - ret = drm_mode_object_get(dev, &bridge->base, DRM_MODE_OBJECT_BRIDGE); - if (ret) - goto out; - - bridge->dev = dev; - - list_add_tail(&bridge->head, &dev->mode_config.bridge_list); - dev->mode_config.num_bridge++; - - out: - drm_modeset_unlock_all(dev); - return ret; -} -EXPORT_SYMBOL(drm_bridge_init); - -/** - * drm_bridge_cleanup - cleans up an initialised bridge - * @bridge: bridge to cleanup - * - * Cleans up the bridge but doesn't free the object. - */ -void drm_bridge_cleanup(struct drm_bridge *bridge) -{ - struct drm_device *dev = bridge->dev; - - drm_modeset_lock_all(dev); - drm_mode_object_put(dev, &bridge->base); - list_del(&bridge->head); - dev->mode_config.num_bridge--; - drm_modeset_unlock_all(dev); - - memset(bridge, 0, sizeof(*bridge)); -} -EXPORT_SYMBOL(drm_bridge_cleanup); - -/** * drm_encoder_init - Init a preallocated encoder * @dev: drm device * @encoder: the encoder to init @@ -1594,7 +1542,6 @@ static int drm_mode_group_init(struct drm_device *dev, struct drm_mode_group *gr total_objects += dev->mode_config.num_crtc; total_objects += dev->mode_config.num_connector; total_objects += dev->mode_config.num_encoder; - total_objects += dev->mode_config.num_bridge; group->id_list = kzalloc(total_objects * sizeof(uint32_t), GFP_KERNEL); if (!group->id_list) @@ -1603,7 +1550,6 @@ static int drm_mode_group_init(struct drm_device *dev, struct drm_mode_group *gr group->num_crtcs = 0; group->num_connectors = 0; group->num_encoders = 0; - group->num_bridges = 0; return 0; } @@ -1623,7 +1569,6 @@ int drm_mode_group_init_legacy_group(struct drm_device *dev, struct drm_crtc *crtc; struct drm_encoder *encoder; struct drm_connector *connector; - struct drm_bridge *bridge; int ret; if ((ret = drm_mode_group_init(dev, group))) @@ -1640,11 +1585,6 @@ int drm_mode_group_init_legacy_group(struct drm_device *dev, group->id_list[group->num_crtcs + group->num_encoders + group->num_connectors++] = connector->base.id; - list_for_each_entry(bridge, &dev->mode_config.bridge_list, head) - group->id_list[group->num_crtcs + group->num_encoders + - group->num_connectors + group->num_bridges++] = - bridge->base.id; - return 0; } EXPORT_SYMBOL(drm_mode_group_init_legacy_group); @@ -5208,7 +5148,6 @@ void drm_mode_config_init(struct drm_device *dev) INIT_LIST_HEAD(&dev->mode_config.fb_list); INIT_LIST_HEAD(&dev->mode_config.crtc_list); INIT_LIST_HEAD(&dev->mode_config.connector_list); - INIT_LIST_HEAD(&dev->mode_config.bridge_list); INIT_LIST_HEAD(&dev->mode_config.encoder_list); INIT_LIST_HEAD(&dev->mode_config.property_list); INIT_LIST_HEAD(&dev->mode_config.property_blob_list); @@ -5249,7 +5188,6 @@ void drm_mode_config_cleanup(struct drm_device *dev) struct drm_connector *connector, *ot; struct drm_crtc *crtc, *ct; struct drm_encoder *encoder, *enct; - struct drm_bridge *bridge, *brt; struct drm_framebuffer *fb, *fbt; struct drm_property *property, *pt; struct drm_property_blob *blob, *bt; @@ -5260,11 +5198,6 @@ void drm_mode_config_cleanup(struct drm_device *dev) encoder->funcs->destroy(encoder); } - list_for_each_entry_safe(bridge, brt, - &dev->mode_config.bridge_list, head) { - bridge->funcs->destroy(bridge); - } - list_for_each_entry_safe(connector, ot, &dev->mode_config.connector_list, head) { connector->funcs->destroy(connector); diff --git a/drivers/gpu/drm/msm/hdmi/hdmi.c b/drivers/gpu/drm/msm/hdmi/hdmi.c index 062c687..95f7b8d 100644 --- a/drivers/gpu/drm/msm/hdmi/hdmi.c +++ b/drivers/gpu/drm/msm/hdmi/hdmi.c @@ -247,9 +247,9 @@ int hdmi_modeset_init(struct hdmi *hdmi, return 0; fail: - /* bridge/connector are normally destroyed by drm: */ + /* bridge is normally destroyed by drm: */ if (hdmi->bridge) { - hdmi->bridge->funcs->destroy(hdmi->bridge); + hdmi_bridge_destroy(hdmi->bridge); hdmi->bridge = NULL; } if (hdmi->connector) { diff --git a/drivers/gpu/drm/msm/hdmi/hdmi.h b/drivers/gpu/drm/msm/hdmi/hdmi.h index 43e654f..4d4cad4 100644 --- a/drivers/gpu/drm/msm/hdmi/hdmi.h +++ b/drivers/gpu/drm/msm/hdmi/hdmi.h @@ -146,6 +146,7 @@ void hdmi_audio_set_sample_rate(struct hdmi *hdmi, int rate); */ struct drm_bridge *hdmi_bridge_init(struct hdmi *hdmi); +void hdmi_bridge_destroy(struct drm_bridge *bridge); /* * hdmi connector: diff --git a/drivers/gpu/drm/msm/hdmi/hdmi_bridge.c b/drivers/gpu/drm/msm/hdmi/hdmi_bridge.c index 52ed2b5..d6f8d58 100644 --- a/drivers/gpu/drm/msm/hdmi/hdmi_bridge.c +++ b/drivers/gpu/drm/msm/hdmi/hdmi_bridge.c @@ -23,10 +23,9 @@ struct hdmi_bridge { }; #define to_hdmi_bridge(x) container_of(x, struct hdmi_bridge, base) -static void hdmi_bridge_destroy(struct drm_bridge *bridge) +void hdmi_bridge_destroy(struct drm_bridge *bridge) { struct hdmi_bridge *hdmi_bridge = to_hdmi_bridge(bridge); - drm_bridge_cleanup(bridge); kfree(hdmi_bridge); } @@ -200,7 +199,6 @@ static const struct drm_bridge_funcs hdmi_bridge_funcs = { .disable = hdmi_bridge_disable, .post_disable = hdmi_bridge_post_disable, .mode_set = hdmi_bridge_mode_set, - .destroy = hdmi_bridge_destroy, }; @@ -222,7 +220,7 @@ struct drm_bridge *hdmi_bridge_init(struct hdmi *hdmi) bridge = &hdmi_bridge->base; bridge->funcs = &hdmi_bridge_funcs; - drm_bridge_init(hdmi->dev, bridge); + drm_bridge_attach(hdmi->dev, bridge); return bridge; diff --git a/drivers/gpu/drm/sti/sti_hda.c b/drivers/gpu/drm/sti/sti_hda.c index 6cf145d..a9bbb08 100644 --- a/drivers/gpu/drm/sti/sti_hda.c +++ b/drivers/gpu/drm/sti/sti_hda.c @@ -508,19 +508,12 @@ static void sti_hda_bridge_nope(struct drm_bridge *bridge) /* do nothing */ } -static void sti_hda_brigde_destroy(struct drm_bridge *bridge) -{ - drm_bridge_cleanup(bridge); - kfree(bridge); -} - static const struct drm_bridge_funcs sti_hda_bridge_funcs = { .pre_enable = sti_hda_pre_enable, .enable = sti_hda_bridge_nope, .disable = sti_hda_disable, .post_disable = sti_hda_bridge_nope, .mode_set = sti_hda_set_mode, - .destroy = sti_hda_brigde_destroy, }; static int sti_hda_connector_get_modes(struct drm_connector *connector) @@ -665,7 +658,7 @@ static int sti_hda_bind(struct device *dev, struct device *master, void *data) bridge->driver_private = hda; bridge->funcs = &sti_hda_bridge_funcs; - drm_bridge_init(drm_dev, bridge); + drm_bridge_attach(drm_dev, bridge); encoder->bridge = bridge; connector->encoder = encoder; @@ -694,7 +687,6 @@ static int sti_hda_bind(struct device *dev, struct device *master, void *data) err_sysfs: drm_connector_unregister(drm_connector); err_connector: - drm_bridge_cleanup(bridge); drm_connector_cleanup(drm_connector); return -EINVAL; } diff --git a/drivers/gpu/drm/sti/sti_hdmi.c b/drivers/gpu/drm/sti/sti_hdmi.c index 74e943e..e840ca5d 100644 --- a/drivers/gpu/drm/sti/sti_hdmi.c +++ b/drivers/gpu/drm/sti/sti_hdmi.c @@ -463,19 +463,12 @@ static void sti_hdmi_bridge_nope(struct drm_bridge *bridge) /* do nothing */ } -static void sti_hdmi_brigde_destroy(struct drm_bridge *bridge) -{ - drm_bridge_cleanup(bridge); - kfree(bridge); -} - static const struct drm_bridge_funcs sti_hdmi_bridge_funcs = { .pre_enable = sti_hdmi_pre_enable, .enable = sti_hdmi_bridge_nope, .disable = sti_hdmi_disable, .post_disable = sti_hdmi_bridge_nope, .mode_set = sti_hdmi_set_mode, - .destroy = sti_hdmi_brigde_destroy, }; static int sti_hdmi_connector_get_modes(struct drm_connector *connector) @@ -636,7 +629,7 @@ static int sti_hdmi_bind(struct device *dev, struct device *master, void *data) bridge->driver_private = hdmi; bridge->funcs = &sti_hdmi_bridge_funcs; - drm_bridge_init(drm_dev, bridge); + drm_bridge_attach(drm_dev, bridge); encoder->bridge = bridge; connector->encoder = encoder; @@ -668,7 +661,6 @@ static int sti_hdmi_bind(struct device *dev, struct device *master, void *data) err_sysfs: drm_connector_unregister(drm_connector); err_connector: - drm_bridge_cleanup(bridge); drm_connector_cleanup(drm_connector); err_adapt: put_device(&hdmi->ddc_adapt->dev); diff --git a/include/drm/bridge/ptn3460.h b/include/drm/bridge/ptn3460.h index ff62344..b11f8e1 100644 --- a/include/drm/bridge/ptn3460.h +++ b/include/drm/bridge/ptn3460.h @@ -15,6 +15,7 @@ #define _DRM_BRIDGE_PTN3460_H_ struct drm_device; +struct drm_bridge; struct drm_encoder; struct i2c_client; struct device_node; @@ -23,6 +24,9 @@ struct device_node; int ptn3460_init(struct drm_device *dev, struct drm_encoder *encoder, struct i2c_client *client, struct device_node *node); + +void ptn3460_destroy(struct drm_bridge *bridge); + #else static inline int ptn3460_init(struct drm_device *dev, @@ -32,6 +36,10 @@ static inline int ptn3460_init(struct drm_device *dev, return 0; } +static inline void ptn3460_destroy(struct drm_bridge *bridge) +{ +} + #endif #endif diff --git a/include/drm/drm_crtc.h b/include/drm/drm_crtc.h index 5b8f254..cc369f3 100644 --- a/include/drm/drm_crtc.h +++ b/include/drm/drm_crtc.h @@ -813,15 +813,16 @@ struct drm_plane { /** * struct drm_bridge_funcs - drm_bridge control functions + * @attach: Called during drm_bridge_attach * @mode_fixup: Try to fixup (or reject entirely) proposed mode for this bridge * @disable: Called right before encoder prepare, disables the bridge * @post_disable: Called right after encoder prepare, for lockstepped disable * @mode_set: Set this mode to the bridge * @pre_enable: Called right before encoder commit, for lockstepped commit * @enable: Called right after encoder commit, enables the bridge - * @destroy: make object go away */ struct drm_bridge_funcs { + int (*attach)(struct drm_bridge *bridge); bool (*mode_fixup)(struct drm_bridge *bridge, const struct drm_display_mode *mode, struct drm_display_mode *adjusted_mode); @@ -832,22 +833,24 @@ struct drm_bridge_funcs { struct drm_display_mode *adjusted_mode); void (*pre_enable)(struct drm_bridge *bridge); void (*enable)(struct drm_bridge *bridge); - void (*destroy)(struct drm_bridge *bridge); }; /** * struct drm_bridge - central DRM bridge control structure * @dev: DRM device this bridge belongs to - * @head: list management + * @of_node: device node pointer to the bridge + * @list: to keep track of all added bridges * @base: base mode object * @funcs: control functions * @driver_private: pointer to the bridge driver's internal context */ struct drm_bridge { struct drm_device *dev; - struct list_head head; - - struct drm_mode_object base; + struct drm_encoder *encoder; +#ifdef CONFIG_OF + struct device_node *of_node; +#endif + struct list_head list; const struct drm_bridge_funcs *funcs; void *driver_private; @@ -950,7 +953,6 @@ struct drm_mode_group { uint32_t num_crtcs; uint32_t num_encoders; uint32_t num_connectors; - uint32_t num_bridges; /* list of object IDs for this group */ uint32_t *id_list; @@ -969,8 +971,6 @@ struct drm_mode_group { * @fb_list: list of framebuffers available * @num_connector: number of connectors on this device * @connector_list: list of connector objects - * @num_bridge: number of bridges on this device - * @bridge_list: list of bridge objects * @num_encoder: number of encoders on this device * @encoder_list: list of encoder objects * @num_overlay_plane: number of overlay planes on this device @@ -1015,8 +1015,6 @@ struct drm_mode_config { int num_connector; struct list_head connector_list; - int num_bridge; - struct list_head bridge_list; int num_encoder; struct list_head encoder_list; @@ -1153,8 +1151,10 @@ extern unsigned int drm_connector_index(struct drm_connector *connector); /* helper to unplug all connectors from sysfs for device */ extern void drm_connector_unplug_all(struct drm_device *dev); -extern int drm_bridge_init(struct drm_device *dev, struct drm_bridge *bridge); -extern void drm_bridge_cleanup(struct drm_bridge *bridge); +extern int drm_bridge_add(struct drm_bridge *bridge); +extern void drm_bridge_remove(struct drm_bridge *bridge); +extern struct drm_bridge *of_drm_find_bridge(struct device_node *np); +extern int drm_bridge_attach(struct drm_device *dev, struct drm_bridge *bridge); extern int drm_encoder_init(struct drm_device *dev, struct drm_encoder *encoder,