From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-8.5 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, UNPARSEABLE_RELAY,USER_AGENT_SANE_1 autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 4743AC4CEC7 for ; Sun, 15 Sep 2019 19:25:41 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id F350C21479 for ; Sun, 15 Sep 2019 19:25:40 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727416AbfIOTZj (ORCPT ); Sun, 15 Sep 2019 15:25:39 -0400 Received: from bhuna.collabora.co.uk ([46.235.227.227]:47750 "EHLO bhuna.collabora.co.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726247AbfIOTZi (ORCPT ); Sun, 15 Sep 2019 15:25:38 -0400 Received: from [127.0.0.1] (localhost [127.0.0.1]) (Authenticated sender: koike) with ESMTPSA id 40E4A28AE52 Subject: Re: [PATCH v4 1/5] media: vimc: Collapse component structure into a single monolithic driver To: Shuah Khan , mchehab@kernel.org, andrealmeid@collabora.com, dafna.hirschfeld@collabora.com, hverkuil-cisco@xs4all.nl Cc: linux-media@vger.kernel.org, linux-kernel@vger.kernel.org References: <5ce80bf232dd43f4678e7dde7f7ff2d6a6374211.1567822793.git.skhan@linuxfoundation.org> From: Helen Koike Openpgp: preference=signencrypt Autocrypt: addr=helen.koike@collabora.com; keydata= mQINBFmOMD4BEADb2nC8Oeyvklh+ataw2u/3mrl+hIHL4WSWtii4VxCapl9+zILuxFDrxw1p XgF3cfx7g9taWBrmLE9VEPwJA6MxaVnQuDL3GXxTxO/gqnOFgT3jT+skAt6qMvoWnhgurMGH wRaA3dO4cFrDlLsZIdDywTYcy7V2bou81ItR5Ed6c5UVX7uTTzeiD/tUi8oIf0XN4takyFuV Rf09nOhi24bn9fFN5xWHJooFaFf/k2Y+5UTkofANUp8nn4jhBUrIr6glOtmE0VT4pZMMLT63 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JkgmmesIAw8mpI6EeLmReUJLasz8QkzhZIC7t5rGlQI94GQG3Jg2dC+kpaGWOaT5G4FVMcBj iR1nXfMxENVYnM5ag7mBZyD/kru5W1Uj34L6AFaDMXFPwedSCpzzqUiHb0f+nYkfOodf5xy0 46+3THy/NUS/ZZp/rI4F7Y77+MQPVg7vARfHHX1AxYUKfRVW5j88QUB70txn8Vgi1tDrOr4J eD+xr0CvIGa5lKqgQacQtGkpOpJ8zY4ObSvpNubey/qYUE3DCXD0n2Xxk4muTvqlkFpOYA== Message-ID: <7868ac1a-5060-d1a2-a854-bf95b887b6e4@collabora.com> Date: Sun, 15 Sep 2019 16:25:27 -0300 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.7.2 MIME-Version: 1.0 In-Reply-To: <5ce80bf232dd43f4678e7dde7f7ff2d6a6374211.1567822793.git.skhan@linuxfoundation.org> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Shuah, Thanks for the patch. On 9/6/19 11:42 PM, Shuah Khan wrote: > vimc uses Component API to split the driver into functional components. > The real hardware resembles a monolith structure than component and > component structure added a level of complexity making it hard to > maintain without adding any real benefit. > > The sensor is one vimc component that would makes sense to be a separate > module to closely align with the real hardware. It would be easier to > collapse vimc into single monolithic driver first and then split the > sensor off as a separate module. > > Collapse it into a single monolithic driver removing the Component API. > This patch removes the component API and makes minimal changes to the > code base preserving the functional division of the code structure. > Preserving the functional structure allows us to split the sensor off > as a separate module in the future. > > Major design elements in this change are: > - Use existing struct vimc_ent_config and struct vimc_pipeline_config > to drive the initialization of the functional components. > - Make vimc_device and vimc_ent_config global by moving them to > vimc-common.h > - Add two new hooks add and rm to initialize and register, unregister > and free subdevs. > - All component API is now gone and bind and unbind hooks are modified > to do "add" and "rm" with minimal changes to just add and rm subdevs. > - vimc-core's bind and unbind are now register and unregister. > - Add a new field to vimc_device structure for saving the pointers to > struct vimc_ent_device(s) subdevs create in their "add" hooks. These > get used to create links and removing the subdevs. vimc-core allocates > this array which sized to number of entries in the topology defined in > the vimc_pipeline_config structure. > - vimc-core invokes "add" hooks from its vimc_register_devices(). > The "add" hooks remain the same and register subdevs. They don't > create platform devices of their own and use vimc's pdev.dev as > their reference device. Each "add" hook returns pointer to its struct > vimc_ent_device. This is saved in the vimc_device ent_devs array. > - vimc-core invokes "rm" hooks from its unregister to unregister subdevs > and cleanup. > - vimc-core invokes "add" and "rm" hooks with pointer to struct vimc_device > and the corresponding vimc_ent_device saved in the ent_devs. > > The following configure and stream test works on all devices. > > media-ctl -d platform:vimc -V '"Sensor A":0[fmt:SBGGR8_1X8/640x480]' > media-ctl -d platform:vimc -V '"Debayer A":0[fmt:SBGGR8_1X8/640x480]' > media-ctl -d platform:vimc -V '"Sensor B":0[fmt:SBGGR8_1X8/640x480]' > media-ctl -d platform:vimc -V '"Debayer B":0[fmt:SBGGR8_1X8/640x480]' > > v4l2-ctl -z platform:vimc -d "RGB/YUV Capture" -v width=1920,height=1440 > v4l2-ctl -z platform:vimc -d "Raw Capture 0" -v pixelformat=BA81 > v4l2-ctl -z platform:vimc -d "Raw Capture 1" -v pixelformat=BA81 > > v4l2-ctl --stream-mmap --stream-count=100 -d /dev/video1 > v4l2-ctl --stream-mmap --stream-count=100 -d /dev/video2 > v4l2-ctl --stream-mmap --stream-count=100 -d /dev/video3 > > Signed-off-by: Shuah Khan > --- > drivers/media/platform/vimc/Makefile | 7 +- > drivers/media/platform/vimc/vimc-capture.c | 81 ++------ > drivers/media/platform/vimc/vimc-common.h | 54 ++++++ > drivers/media/platform/vimc/vimc-core.c | 216 +++++++++------------ > drivers/media/platform/vimc/vimc-debayer.c | 69 ++----- > drivers/media/platform/vimc/vimc-scaler.c | 73 ++----- > drivers/media/platform/vimc/vimc-sensor.c | 73 ++----- > 7 files changed, 193 insertions(+), 380 deletions(-) > > diff --git a/drivers/media/platform/vimc/Makefile b/drivers/media/platform/vimc/Makefile > index 96d06f030c31..a53b2b532e9f 100644 > --- a/drivers/media/platform/vimc/Makefile > +++ b/drivers/media/platform/vimc/Makefile > @@ -1,5 +1,6 @@ > # SPDX-License-Identifier: GPL-2.0 > -vimc-y := vimc-core.o vimc-common.o vimc-streamer.o > +vimc-y := vimc-core.o vimc-common.o vimc-streamer.o vimc-capture.o \ > + vimc-debayer.o vimc-scaler.o vimc-sensor.o > + > +obj-$(CONFIG_VIDEO_VIMC) += vimc.o > > -obj-$(CONFIG_VIDEO_VIMC) += vimc.o vimc-capture.o vimc-debayer.o \ > - vimc-scaler.o vimc-sensor.o > diff --git a/drivers/media/platform/vimc/vimc-capture.c b/drivers/media/platform/vimc/vimc-capture.c > index 1d56b91830ba..602f80323031 100644 > --- a/drivers/media/platform/vimc/vimc-capture.c > +++ b/drivers/media/platform/vimc/vimc-capture.c > @@ -5,10 +5,6 @@ > * Copyright (C) 2015-2017 Helen Koike > */ > > -#include > -#include > -#include > -#include > #include > #include > #include > @@ -16,8 +12,6 @@ > #include "vimc-common.h" > #include "vimc-streamer.h" > > -#define VIMC_CAP_DRV_NAME "vimc-capture" > - > struct vimc_cap_device { > struct vimc_ent_device ved; > struct video_device vdev; > @@ -340,13 +334,11 @@ static void vimc_cap_release(struct video_device *vdev) > kfree(vcap); > } > > -static void vimc_cap_comp_unbind(struct device *comp, struct device *master, > - void *master_data) > +void vimc_cap_rm(struct vimc_device *vimc, struct vimc_ent_device *ved) > { > - struct vimc_ent_device *ved = dev_get_drvdata(comp); > - struct vimc_cap_device *vcap = container_of(ved, struct vimc_cap_device, > - ved); > + struct vimc_cap_device *vcap; > > + vcap = container_of(ved, struct vimc_cap_device, ved); > vb2_queue_release(&vcap->queue); > media_entity_cleanup(ved->ent); > video_unregister_device(&vcap->vdev); > @@ -391,11 +383,10 @@ static void *vimc_cap_process_frame(struct vimc_ent_device *ved, > return NULL; > } > > -static int vimc_cap_comp_bind(struct device *comp, struct device *master, > - void *master_data) > +struct vimc_ent_device *vimc_cap_add(struct vimc_device *vimc, > + const char *vcfg_name) > { > - struct v4l2_device *v4l2_dev = master_data; > - struct vimc_platform_data *pdata = comp->platform_data; > + struct v4l2_device *v4l2_dev = &vimc->v4l2_dev; > const struct vimc_pix_map *vpix; > struct vimc_cap_device *vcap; > struct video_device *vdev; > @@ -405,7 +396,7 @@ static int vimc_cap_comp_bind(struct device *comp, struct device *master, > /* Allocate the vimc_cap_device struct */ > vcap = kzalloc(sizeof(*vcap), GFP_KERNEL); > if (!vcap) > - return -ENOMEM; > + return NULL; > > /* Allocate the pads */ > vcap->ved.pads = > @@ -416,7 +407,7 @@ static int vimc_cap_comp_bind(struct device *comp, struct device *master, > } > > /* Initialize the media entity */ > - vcap->vdev.entity.name = pdata->entity_name; > + vcap->vdev.entity.name = vcfg_name; > vcap->vdev.entity.function = MEDIA_ENT_F_IO_V4L; > ret = media_entity_pads_init(&vcap->vdev.entity, > 1, vcap->ved.pads); > @@ -440,8 +431,8 @@ static int vimc_cap_comp_bind(struct device *comp, struct device *master, > > ret = vb2_queue_init(q); > if (ret) { > - dev_err(comp, "%s: vb2 queue init failed (err=%d)\n", > - pdata->entity_name, ret); > + dev_err(&vimc->pdev.dev, "%s: vb2 queue init failed (err=%d)\n", > + vcfg_name, ret); > goto err_clean_m_ent; > } > > @@ -460,8 +451,7 @@ static int vimc_cap_comp_bind(struct device *comp, struct device *master, > vcap->ved.ent = &vcap->vdev.entity; > vcap->ved.process_frame = vimc_cap_process_frame; > vcap->ved.vdev_get_format = vimc_cap_get_format; > - dev_set_drvdata(comp, &vcap->ved); > - vcap->dev = comp; > + vcap->dev = &vimc->pdev.dev; > > /* Initialize the video_device struct */ > vdev = &vcap->vdev; > @@ -474,18 +464,18 @@ static int vimc_cap_comp_bind(struct device *comp, struct device *master, > vdev->queue = q; > vdev->v4l2_dev = v4l2_dev; > vdev->vfl_dir = VFL_DIR_RX; > - strscpy(vdev->name, pdata->entity_name, sizeof(vdev->name)); > + strscpy(vdev->name, vcfg_name, sizeof(vdev->name)); > video_set_drvdata(vdev, &vcap->ved); > > /* Register the video_device with the v4l2 and the media framework */ > ret = video_register_device(vdev, VFL_TYPE_GRABBER, -1); > if (ret) { > - dev_err(comp, "%s: video register failed (err=%d)\n", > + dev_err(&vimc->pdev.dev, "%s: video register failed (err=%d)\n", > vcap->vdev.name, ret); > goto err_release_queue; > } > > - return 0; > + return &vcap->ved; > > err_release_queue: > vb2_queue_release(q); > @@ -496,46 +486,5 @@ static int vimc_cap_comp_bind(struct device *comp, struct device *master, > err_free_vcap: > kfree(vcap); > > - return ret; > -} > - > -static const struct component_ops vimc_cap_comp_ops = { > - .bind = vimc_cap_comp_bind, > - .unbind = vimc_cap_comp_unbind, > -}; > - > -static int vimc_cap_probe(struct platform_device *pdev) > -{ > - return component_add(&pdev->dev, &vimc_cap_comp_ops); > -} > - > -static int vimc_cap_remove(struct platform_device *pdev) > -{ > - component_del(&pdev->dev, &vimc_cap_comp_ops); > - > - return 0; > + return NULL; > } > - > -static const struct platform_device_id vimc_cap_driver_ids[] = { > - { > - .name = VIMC_CAP_DRV_NAME, > - }, > - { } > -}; > - > -static struct platform_driver vimc_cap_pdrv = { > - .probe = vimc_cap_probe, > - .remove = vimc_cap_remove, > - .id_table = vimc_cap_driver_ids, > - .driver = { > - .name = VIMC_CAP_DRV_NAME, > - }, > -}; > - > -module_platform_driver(vimc_cap_pdrv); > - > -MODULE_DEVICE_TABLE(platform, vimc_cap_driver_ids); > - > -MODULE_DESCRIPTION("Virtual Media Controller Driver (VIMC) Capture"); > -MODULE_AUTHOR("Helen Mae Koike Fornazier "); > -MODULE_LICENSE("GPL"); > diff --git a/drivers/media/platform/vimc/vimc-common.h b/drivers/media/platform/vimc/vimc-common.h > index 9c2e0e216c6b..87ee84f78322 100644 > --- a/drivers/media/platform/vimc/vimc-common.h > +++ b/drivers/media/platform/vimc/vimc-common.h > @@ -9,6 +9,7 @@ > #define _VIMC_COMMON_H_ > > #include > +#include This should go before linux/slab.h to keep in alphabetical order. > #include > #include > > @@ -111,6 +112,59 @@ struct vimc_ent_device { > struct v4l2_pix_format *fmt); > }; > > +/** > + * struct vimc_device - main device for vimc driver > + * > + * @pdev pointer to the platform device > + * @pipe_cfg pointer to the vimc pipeline configuration structure > + * @ent_devs arry of vimc_ent_device pointers s/arry/array > + * @mdev the associated media_device parent > + * @v4l2_dev Internal v4l2 parent device > + */ > +struct vimc_device { > + struct platform_device pdev; > + const struct vimc_pipeline_config *pipe_cfg; > + struct vimc_ent_device **ent_devs; > + struct media_device mdev; > + struct v4l2_device v4l2_dev; > +}; > + > +/** > + * struct vimc_ent_config Structure which describes individual > + * configuration for each entity > + * > + * @name entity name > + * @ved pointer to vimc_ent_device (a node in the > + * topology) > + * @add subdev add hook - initializes and registers > + * subdev called from vimc-core > + * @rm subdev rm hook - unregisters and frees > + * subdev called from vimc-core > + */ > +struct vimc_ent_config { > + const char *name; > + struct vimc_ent_device *(*add)(struct vimc_device *vimc, > + const char *vcfg_name); > + void (*rm)(struct vimc_device *vimc, struct vimc_ent_device *ved); > +}; > + > +/* prototypes for vimc_ent_config add and rm hooks */ > +struct vimc_ent_device *vimc_cap_add(struct vimc_device *vimc, > + const char *vcfg_name); > +void vimc_cap_rm(struct vimc_device *vimc, struct vimc_ent_device *ved); > + > +struct vimc_ent_device *vimc_deb_add(struct vimc_device *vimc, > + const char *vcfg_name); > +void vimc_deb_rm(struct vimc_device *vimc, struct vimc_ent_device *ved); > + > +struct vimc_ent_device *vimc_sca_add(struct vimc_device *vimc, > + const char *vcfg_name); > +void vimc_sca_rm(struct vimc_device *vimc, struct vimc_ent_device *ved); > + > +struct vimc_ent_device *vimc_sen_add(struct vimc_device *vimc, > + const char *vcfg_name); > +void vimc_sen_rm(struct vimc_device *vimc, struct vimc_ent_device *ved); > + > /** > * vimc_pads_init - initialize pads > * > diff --git a/drivers/media/platform/vimc/vimc-core.c b/drivers/media/platform/vimc/vimc-core.c > index 571c55aa0e16..a1218578cb9a 100644 > --- a/drivers/media/platform/vimc/vimc-core.c > +++ b/drivers/media/platform/vimc/vimc-core.c > @@ -5,7 +5,6 @@ > * Copyright (C) 2015-2017 Helen Koike > */ > > -#include > #include > #include > #include > @@ -24,29 +23,6 @@ > .flags = link_flags, \ > } > > -struct vimc_device { > - /* The platform device */ > - struct platform_device pdev; > - > - /* The pipeline configuration */ > - const struct vimc_pipeline_config *pipe_cfg; > - > - /* The Associated media_device parent */ > - struct media_device mdev; > - > - /* Internal v4l2 parent device*/ > - struct v4l2_device v4l2_dev; > - > - /* Subdevices */ > - struct platform_device **subdevs; > -}; > - > -/* Structure which describes individual configuration for each entity */ > -struct vimc_ent_config { > - const char *name; > - const char *drv; > -}; > - > /* Structure which describes links between entities */ > struct vimc_ent_link { > unsigned int src_ent; > @@ -68,43 +44,52 @@ struct vimc_pipeline_config { > * Topology Configuration > */ > > -static const struct vimc_ent_config ent_config[] = { > +static struct vimc_ent_config ent_config[] = { > { > .name = "Sensor A", > - .drv = "vimc-sensor", > + .add = vimc_sen_add, > + .rm = vimc_sen_rm, > }, > { > .name = "Sensor B", > - .drv = "vimc-sensor", > + .add = vimc_sen_add, > + .rm = vimc_sen_rm, > }, > { > .name = "Debayer A", > - .drv = "vimc-debayer", > + .add = vimc_deb_add, > + .rm = vimc_deb_rm, > }, > { > .name = "Debayer B", > - .drv = "vimc-debayer", > + .add = vimc_deb_add, > + .rm = vimc_deb_rm, > }, > { > .name = "Raw Capture 0", > - .drv = "vimc-capture", > + .add = vimc_cap_add, > + .rm = vimc_cap_rm, > }, > { > .name = "Raw Capture 1", > - .drv = "vimc-capture", > + .add = vimc_cap_add, > + .rm = vimc_cap_rm, > }, > { > - .name = "RGB/YUV Input", > /* TODO: change this to vimc-input when it is implemented */ > - .drv = "vimc-sensor", > + .name = "RGB/YUV Input", > + .add = vimc_sen_add, > + .rm = vimc_sen_rm, > }, > { > .name = "Scaler", > - .drv = "vimc-scaler", > + .add = vimc_sca_add, > + .rm = vimc_sca_rm, > }, > { > .name = "RGB/YUV Capture", > - .drv = "vimc-capture", > + .add = vimc_cap_add, > + .rm = vimc_cap_rm, > }, > }; > > @@ -127,7 +112,7 @@ static const struct vimc_ent_link ent_links[] = { > VIMC_ENT_LINK(7, 1, 8, 0, MEDIA_LNK_FL_ENABLED | MEDIA_LNK_FL_IMMUTABLE), > }; > > -static const struct vimc_pipeline_config pipe_cfg = { > +static struct vimc_pipeline_config pipe_cfg = { > .ents = ent_config, > .num_ents = ARRAY_SIZE(ent_config), > .links = ent_links, > @@ -136,6 +121,14 @@ static const struct vimc_pipeline_config pipe_cfg = { > > /* -------------------------------------------------------------------------- */ > > +static void vimc_rm_links(struct vimc_device *vimc) > +{ > + unsigned int i; > + > + for (i = 0; i < vimc->pipe_cfg->num_ents; i++) > + media_entity_remove_links(vimc->ent_devs[i]->ent); > +} > + > static int vimc_create_links(struct vimc_device *vimc) > { > unsigned int i; > @@ -144,32 +137,58 @@ static int vimc_create_links(struct vimc_device *vimc) > /* Initialize the links between entities */ > for (i = 0; i < vimc->pipe_cfg->num_links; i++) { > const struct vimc_ent_link *link = &vimc->pipe_cfg->links[i]; > - /* > - * TODO: Check another way of retrieving ved struct without > - * relying on platform_get_drvdata > - */ > + > struct vimc_ent_device *ved_src = > - platform_get_drvdata(vimc->subdevs[link->src_ent]); > + vimc->ent_devs[link->src_ent]; > struct vimc_ent_device *ved_sink = > - platform_get_drvdata(vimc->subdevs[link->sink_ent]); > + vimc->ent_devs[link->sink_ent]; > > ret = media_create_pad_link(ved_src->ent, link->src_pad, > ved_sink->ent, link->sink_pad, > link->flags); > if (ret) > - return ret; > + goto err_rm_links; > } > > return 0; > + > +err_rm_links: > + vimc_rm_links(vimc); > + return ret; > } > > -static int vimc_comp_bind(struct device *master) > +static int vimc_add_subdevs(struct vimc_device *vimc) > { > - struct vimc_device *vimc = container_of(to_platform_device(master), > - struct vimc_device, pdev); > - int ret; > + unsigned int i; > + struct vimc_ent_device *ved; > + > + for (i = 0; i < vimc->pipe_cfg->num_ents; i++) { > + dev_dbg(&vimc->pdev.dev, "new entity for %s\n", > + vimc->pipe_cfg->ents[i].name); > + ved = vimc->pipe_cfg->ents[i].add(vimc, > + vimc->pipe_cfg->ents[i].name); > + if (!ved) { > + dev_err(&vimc->pdev.dev, "add new entity for %s\n", > + vimc->pipe_cfg->ents[i].name); > + return -1; return -EINVAL > + } > + vimc->ent_devs[i] = ved; > + } > + return 0; > +} > + > +static void vimc_rm_subdevs(struct vimc_device *vimc) > +{ > + unsigned int i; > > - dev_dbg(master, "bind"); > + for (i = 0; i < vimc->pipe_cfg->num_ents; i++) > + if (vimc->ent_devs[i]) > + vimc->pipe_cfg->ents[i].rm(vimc, vimc->ent_devs[i]); > +} > + > +static int vimc_register_devices(struct vimc_device *vimc) > +{ > + int ret; > > /* Register the v4l2 struct */ > ret = v4l2_device_register(vimc->mdev.dev, &vimc->v4l2_dev); > @@ -179,22 +198,30 @@ static int vimc_comp_bind(struct device *master) > return ret; > } > > - /* Bind subdevices */ > - ret = component_bind_all(master, &vimc->v4l2_dev); > - if (ret) > + /* allocate ent_devs */ > + vimc->ent_devs = kmalloc_array(vimc->pipe_cfg->num_ents, > + sizeof(*vimc->ent_devs), > + GFP_KERNEL); > + if (!vimc->ent_devs) > goto err_v4l2_unregister; > > + /* Invoke entity config hooks to initialize and register subdevs */ > + ret = vimc_add_subdevs(vimc); > + if (ret) > + /* remove sundevs that got added */ > + goto err_rm_subdevs; > + > /* Initialize links */ > ret = vimc_create_links(vimc); > if (ret) > - goto err_comp_unbind_all; > + goto err_rm_subdevs; > > /* Register the media device */ > ret = media_device_register(&vimc->mdev); > if (ret) { > dev_err(vimc->mdev.dev, > "media device register failed (err=%d)\n", ret); > - goto err_comp_unbind_all; > + goto err_rm_subdevs; > } > > /* Expose all subdev's nodes*/ > @@ -211,98 +238,32 @@ static int vimc_comp_bind(struct device *master) > err_mdev_unregister: > media_device_unregister(&vimc->mdev); > media_device_cleanup(&vimc->mdev); > -err_comp_unbind_all: > - component_unbind_all(master, NULL); > +err_rm_subdevs: > + vimc_rm_subdevs(vimc); > + kfree(vimc->ent_devs); > err_v4l2_unregister: > v4l2_device_unregister(&vimc->v4l2_dev); > > return ret; > } > > -static void vimc_comp_unbind(struct device *master) > +static void vimc_unregister(struct vimc_device *vimc) > { > - struct vimc_device *vimc = container_of(to_platform_device(master), > - struct vimc_device, pdev); > - > - dev_dbg(master, "unbind"); > - > media_device_unregister(&vimc->mdev); > media_device_cleanup(&vimc->mdev); > - component_unbind_all(master, NULL); > v4l2_device_unregister(&vimc->v4l2_dev); > + kfree(vimc->ent_devs); > } > > -static int vimc_comp_compare(struct device *comp, void *data) > -{ > - return comp == data; > -} > - > -static struct component_match *vimc_add_subdevs(struct vimc_device *vimc) > -{ > - struct component_match *match = NULL; > - struct vimc_platform_data pdata; > - int i; > - > - for (i = 0; i < vimc->pipe_cfg->num_ents; i++) { > - dev_dbg(&vimc->pdev.dev, "new pdev for %s\n", > - vimc->pipe_cfg->ents[i].drv); > - > - strscpy(pdata.entity_name, vimc->pipe_cfg->ents[i].name, > - sizeof(pdata.entity_name)); > - > - vimc->subdevs[i] = platform_device_register_data(&vimc->pdev.dev, > - vimc->pipe_cfg->ents[i].drv, > - PLATFORM_DEVID_AUTO, > - &pdata, > - sizeof(pdata)); > - if (IS_ERR(vimc->subdevs[i])) { > - match = ERR_CAST(vimc->subdevs[i]); > - while (--i >= 0) > - platform_device_unregister(vimc->subdevs[i]); > - > - return match; > - } > - > - component_match_add(&vimc->pdev.dev, &match, vimc_comp_compare, > - &vimc->subdevs[i]->dev); > - } > - > - return match; > -} > - > -static void vimc_rm_subdevs(struct vimc_device *vimc) > -{ > - unsigned int i; > - > - for (i = 0; i < vimc->pipe_cfg->num_ents; i++) > - platform_device_unregister(vimc->subdevs[i]); > -} > - > -static const struct component_master_ops vimc_comp_ops = { > - .bind = vimc_comp_bind, > - .unbind = vimc_comp_unbind, > -}; > - > static int vimc_probe(struct platform_device *pdev) > { > struct vimc_device *vimc = container_of(pdev, struct vimc_device, pdev); > - struct component_match *match = NULL; > int ret; > > dev_dbg(&pdev->dev, "probe"); > > memset(&vimc->mdev, 0, sizeof(vimc->mdev)); > > - /* Create platform_device for each entity in the topology*/ > - vimc->subdevs = devm_kcalloc(&vimc->pdev.dev, vimc->pipe_cfg->num_ents, > - sizeof(*vimc->subdevs), GFP_KERNEL); > - if (!vimc->subdevs) > - return -ENOMEM; > - > - match = vimc_add_subdevs(vimc); > - if (IS_ERR(match)) > - return PTR_ERR(match); > - > /* Link the media device within the v4l2_device */ > vimc->v4l2_dev.mdev = &vimc->mdev; > > @@ -314,12 +275,9 @@ static int vimc_probe(struct platform_device *pdev) > vimc->mdev.dev = &pdev->dev; > media_device_init(&vimc->mdev); > > - /* Add self to the component system */ > - ret = component_master_add_with_match(&pdev->dev, &vimc_comp_ops, > - match); > + ret = vimc_register_devices(vimc); > if (ret) { > media_device_cleanup(&vimc->mdev); > - vimc_rm_subdevs(vimc); > return ret; > } > > @@ -332,8 +290,8 @@ static int vimc_remove(struct platform_device *pdev) > > dev_dbg(&pdev->dev, "remove"); > > - component_master_del(&pdev->dev, &vimc_comp_ops); > vimc_rm_subdevs(vimc); > + vimc_unregister(vimc); > > return 0; > } > diff --git a/drivers/media/platform/vimc/vimc-debayer.c b/drivers/media/platform/vimc/vimc-debayer.c > index b72b8385067b..00850f2501ad 100644 > --- a/drivers/media/platform/vimc/vimc-debayer.c > +++ b/drivers/media/platform/vimc/vimc-debayer.c > @@ -15,8 +15,6 @@ > Could you also remove the following headers? #include· #include· #include· #include· > #include "vimc-common.h" > > -#define VIMC_DEB_DRV_NAME "vimc-debayer" > - > static unsigned int deb_mean_win_size = 3; > module_param(deb_mean_win_size, uint, 0000); > MODULE_PARM_DESC(deb_mean_win_size, " the window size to calculate the mean.\n" > @@ -491,44 +489,40 @@ static const struct v4l2_subdev_internal_ops vimc_deb_int_ops = { > .release = vimc_deb_release, > }; > > -static void vimc_deb_comp_unbind(struct device *comp, struct device *master, > - void *master_data) > +void vimc_deb_rm(struct vimc_device *vimc, struct vimc_ent_device *ved) > { > - struct vimc_ent_device *ved = dev_get_drvdata(comp); > - struct vimc_deb_device *vdeb = container_of(ved, struct vimc_deb_device, > - ved); > + struct vimc_deb_device *vdeb; > > + vdeb = container_of(ved, struct vimc_deb_device, ved); > vimc_ent_sd_unregister(ved, &vdeb->sd); > } > > -static int vimc_deb_comp_bind(struct device *comp, struct device *master, > - void *master_data) > +struct vimc_ent_device *vimc_deb_add(struct vimc_device *vimc, > + const char *vcfg_name) > { > - struct v4l2_device *v4l2_dev = master_data; > - struct vimc_platform_data *pdata = comp->platform_data; > + struct v4l2_device *v4l2_dev = &vimc->v4l2_dev; > struct vimc_deb_device *vdeb; > int ret; > > /* Allocate the vdeb struct */ > vdeb = kzalloc(sizeof(*vdeb), GFP_KERNEL); > if (!vdeb) > - return -ENOMEM; > + return NULL; > > /* Initialize ved and sd */ > ret = vimc_ent_sd_register(&vdeb->ved, &vdeb->sd, v4l2_dev, > - pdata->entity_name, > + vcfg_name, > MEDIA_ENT_F_PROC_VIDEO_PIXEL_ENC_CONV, 2, > (const unsigned long[2]) {MEDIA_PAD_FL_SINK, > MEDIA_PAD_FL_SOURCE}, > &vimc_deb_int_ops, &vimc_deb_ops); > if (ret) { > kfree(vdeb); > - return ret; > + return NULL; > } > > vdeb->ved.process_frame = vimc_deb_process_frame; > - dev_set_drvdata(comp, &vdeb->ved); > - vdeb->dev = comp; > + vdeb->dev = &vimc->pdev.dev; > > /* Initialize the frame format */ > vdeb->sink_fmt = sink_fmt_default; > @@ -541,46 +535,5 @@ static int vimc_deb_comp_bind(struct device *comp, struct device *master, > vdeb->src_code = MEDIA_BUS_FMT_RGB888_1X24; > vdeb->set_rgb_src = vimc_deb_set_rgb_mbus_fmt_rgb888_1x24; > > - return 0; > + return &vdeb->ved; > } > - > -static const struct component_ops vimc_deb_comp_ops = { > - .bind = vimc_deb_comp_bind, > - .unbind = vimc_deb_comp_unbind, > -}; > - > -static int vimc_deb_probe(struct platform_device *pdev) > -{ > - return component_add(&pdev->dev, &vimc_deb_comp_ops); > -} > - > -static int vimc_deb_remove(struct platform_device *pdev) > -{ > - component_del(&pdev->dev, &vimc_deb_comp_ops); > - > - return 0; > -} > - > -static const struct platform_device_id vimc_deb_driver_ids[] = { > - { > - .name = VIMC_DEB_DRV_NAME, > - }, > - { } > -}; > - > -static struct platform_driver vimc_deb_pdrv = { > - .probe = vimc_deb_probe, > - .remove = vimc_deb_remove, > - .id_table = vimc_deb_driver_ids, > - .driver = { > - .name = VIMC_DEB_DRV_NAME, > - }, > -}; > - > -module_platform_driver(vimc_deb_pdrv); > - > -MODULE_DEVICE_TABLE(platform, vimc_deb_driver_ids); > - > -MODULE_DESCRIPTION("Virtual Media Controller Driver (VIMC) Debayer"); > -MODULE_AUTHOR("Helen Mae Koike Fornazier "); > -MODULE_LICENSE("GPL"); > diff --git a/drivers/media/platform/vimc/vimc-scaler.c b/drivers/media/platform/vimc/vimc-scaler.c > index 49ab8d9dd9c9..28a947950a0b 100644 > --- a/drivers/media/platform/vimc/vimc-scaler.c > +++ b/drivers/media/platform/vimc/vimc-scaler.c > @@ -5,18 +5,13 @@ > * Copyright (C) 2015-2017 Helen Koike > */ > > -#include > #include You can remove this include as well. > -#include > -#include > #include > #include > #include > > #include "vimc-common.h" > > -#define VIMC_SCA_DRV_NAME "vimc-scaler" > - > static unsigned int sca_mult = 3; > module_param(sca_mult, uint, 0000); > MODULE_PARM_DESC(sca_mult, " the image size multiplier"); > @@ -350,89 +345,43 @@ static const struct v4l2_subdev_internal_ops vimc_sca_int_ops = { > .release = vimc_sca_release, > }; > > -static void vimc_sca_comp_unbind(struct device *comp, struct device *master, > - void *master_data) > +void vimc_sca_rm(struct vimc_device *vimc, struct vimc_ent_device *ved) > { > - struct vimc_ent_device *ved = dev_get_drvdata(comp); > - struct vimc_sca_device *vsca = container_of(ved, struct vimc_sca_device, > - ved); > + struct vimc_sca_device *vsca; > > + vsca = container_of(ved, struct vimc_sca_device, ved); > vimc_ent_sd_unregister(ved, &vsca->sd); > } > > - > -static int vimc_sca_comp_bind(struct device *comp, struct device *master, > - void *master_data) > +struct vimc_ent_device *vimc_sca_add(struct vimc_device *vimc, > + const char *vcfg_name) > { > - struct v4l2_device *v4l2_dev = master_data; > - struct vimc_platform_data *pdata = comp->platform_data; > + struct v4l2_device *v4l2_dev = &vimc->v4l2_dev; > struct vimc_sca_device *vsca; > int ret; > > /* Allocate the vsca struct */ > vsca = kzalloc(sizeof(*vsca), GFP_KERNEL); > if (!vsca) > - return -ENOMEM; > + return NULL; > > /* Initialize ved and sd */ > ret = vimc_ent_sd_register(&vsca->ved, &vsca->sd, v4l2_dev, > - pdata->entity_name, > + vcfg_name, > MEDIA_ENT_F_PROC_VIDEO_SCALER, 2, > (const unsigned long[2]) {MEDIA_PAD_FL_SINK, > MEDIA_PAD_FL_SOURCE}, > &vimc_sca_int_ops, &vimc_sca_ops); > if (ret) { > kfree(vsca); > - return ret; > + return NULL; > } > > vsca->ved.process_frame = vimc_sca_process_frame; > - dev_set_drvdata(comp, &vsca->ved); > - vsca->dev = comp; > + vsca->dev = &vimc->pdev.dev; > > /* Initialize the frame format */ > vsca->sink_fmt = sink_fmt_default; > > - return 0; > -} > - > -static const struct component_ops vimc_sca_comp_ops = { > - .bind = vimc_sca_comp_bind, > - .unbind = vimc_sca_comp_unbind, > -}; > - > -static int vimc_sca_probe(struct platform_device *pdev) > -{ > - return component_add(&pdev->dev, &vimc_sca_comp_ops); > + return &vsca->ved; > } > - > -static int vimc_sca_remove(struct platform_device *pdev) > -{ > - component_del(&pdev->dev, &vimc_sca_comp_ops); > - > - return 0; > -} > - > -static const struct platform_device_id vimc_sca_driver_ids[] = { > - { > - .name = VIMC_SCA_DRV_NAME, > - }, > - { } > -}; > - > -static struct platform_driver vimc_sca_pdrv = { > - .probe = vimc_sca_probe, > - .remove = vimc_sca_remove, > - .id_table = vimc_sca_driver_ids, > - .driver = { > - .name = VIMC_SCA_DRV_NAME, > - }, > -}; > - > -module_platform_driver(vimc_sca_pdrv); > - > -MODULE_DEVICE_TABLE(platform, vimc_sca_driver_ids); > - > -MODULE_DESCRIPTION("Virtual Media Controller Driver (VIMC) Scaler"); > -MODULE_AUTHOR("Helen Mae Koike Fornazier "); > -MODULE_LICENSE("GPL"); > diff --git a/drivers/media/platform/vimc/vimc-sensor.c b/drivers/media/platform/vimc/vimc-sensor.c > index 6c53b9fc1617..1f15637ca8bb 100644 > --- a/drivers/media/platform/vimc/vimc-sensor.c > +++ b/drivers/media/platform/vimc/vimc-sensor.c > @@ -5,10 +5,6 @@ > * Copyright (C) 2015-2017 Helen Koike > */ > > -#include > -#include > -#include > -#include > #include > #include > #include > @@ -18,8 +14,6 @@ > > #include "vimc-common.h" > > -#define VIMC_SEN_DRV_NAME "vimc-sensor" > - > struct vimc_sen_device { > struct vimc_ent_device ved; > struct v4l2_subdev sd; > @@ -304,13 +298,11 @@ static const struct v4l2_subdev_internal_ops vimc_sen_int_ops = { > .release = vimc_sen_release, > }; > > -static void vimc_sen_comp_unbind(struct device *comp, struct device *master, > - void *master_data) > +void vimc_sen_rm(struct vimc_device *vimc, struct vimc_ent_device *ved) > { > - struct vimc_ent_device *ved = dev_get_drvdata(comp); > - struct vimc_sen_device *vsen = > - container_of(ved, struct vimc_sen_device, ved); > + struct vimc_sen_device *vsen; > > + vsen = container_of(ved, struct vimc_sen_device, ved); > vimc_ent_sd_unregister(ved, &vsen->sd); > } > > @@ -331,18 +323,17 @@ static const struct v4l2_ctrl_config vimc_sen_ctrl_test_pattern = { > .qmenu = tpg_pattern_strings, > }; > > -static int vimc_sen_comp_bind(struct device *comp, struct device *master, > - void *master_data) > +struct vimc_ent_device *vimc_sen_add(struct vimc_device *vimc, > + const char *vcfg_name) > { > - struct v4l2_device *v4l2_dev = master_data; > - struct vimc_platform_data *pdata = comp->platform_data; > + struct v4l2_device *v4l2_dev = &vimc->v4l2_dev; > struct vimc_sen_device *vsen; > int ret; > > /* Allocate the vsen struct */ > vsen = kzalloc(sizeof(*vsen), GFP_KERNEL); > if (!vsen) > - return -ENOMEM; > + return NULL; > > v4l2_ctrl_handler_init(&vsen->hdl, 4); > > @@ -368,7 +359,7 @@ static int vimc_sen_comp_bind(struct device *comp, struct device *master, > > /* Initialize ved and sd */ > ret = vimc_ent_sd_register(&vsen->ved, &vsen->sd, v4l2_dev, > - pdata->entity_name, > + vcfg_name, > MEDIA_ENT_F_CAM_SENSOR, 1, > (const unsigned long[1]) {MEDIA_PAD_FL_SOURCE}, > &vimc_sen_int_ops, &vimc_sen_ops); > @@ -376,8 +367,7 @@ static int vimc_sen_comp_bind(struct device *comp, struct device *master, > goto err_free_hdl; > > vsen->ved.process_frame = vimc_sen_process_frame; > - dev_set_drvdata(comp, &vsen->ved); > - vsen->dev = comp; > + vsen->dev = &vimc->pdev.dev; > > /* Initialize the frame format */ > vsen->mbus_format = fmt_default; > @@ -389,7 +379,7 @@ static int vimc_sen_comp_bind(struct device *comp, struct device *master, > if (ret) > goto err_unregister_ent_sd; > > - return 0; > + return &vsen->ved; > > err_unregister_ent_sd: > vimc_ent_sd_unregister(&vsen->ved, &vsen->sd); > @@ -398,46 +388,5 @@ static int vimc_sen_comp_bind(struct device *comp, struct device *master, > err_free_vsen: > kfree(vsen); > > - return ret; > + return NULL; > } > - > -static const struct component_ops vimc_sen_comp_ops = { > - .bind = vimc_sen_comp_bind, > - .unbind = vimc_sen_comp_unbind, > -}; > - > -static int vimc_sen_probe(struct platform_device *pdev) > -{ > - return component_add(&pdev->dev, &vimc_sen_comp_ops); > -} > - > -static int vimc_sen_remove(struct platform_device *pdev) > -{ > - component_del(&pdev->dev, &vimc_sen_comp_ops); > - > - return 0; > -} > - > -static const struct platform_device_id vimc_sen_driver_ids[] = { > - { > - .name = VIMC_SEN_DRV_NAME, > - }, > - { } > -}; > - > -static struct platform_driver vimc_sen_pdrv = { > - .probe = vimc_sen_probe, > - .remove = vimc_sen_remove, > - .id_table = vimc_sen_driver_ids, > - .driver = { > - .name = VIMC_SEN_DRV_NAME, > - }, > -}; > - > -module_platform_driver(vimc_sen_pdrv); > - > -MODULE_DEVICE_TABLE(platform, vimc_sen_driver_ids); > - > -MODULE_DESCRIPTION("Virtual Media Controller Driver (VIMC) Sensor"); > -MODULE_AUTHOR("Helen Mae Koike Fornazier "); > -MODULE_LICENSE("GPL"); > With these changes: Acked-by: Helen Koike