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[109.49.46.234]) by smtp.gmail.com with ESMTPSA id 75-v6sm76878wmw.37.2018.05.22.07.52.55 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 22 May 2018 07:52:56 -0700 (PDT) From: Rui Miguel Silva To: mchehab@kernel.org, sakari.ailus@linux.intel.com, Steve Longerbeam , Philipp Zabel , Rob Herring Cc: linux-media@vger.kernel.org, devel@driverdev.osuosl.org, Shawn Guo , Fabio Estevam , devicetree@vger.kernel.org, Greg Kroah-Hartman , Ryan Harkin , linux-clk@vger.kernel.org, Rui Miguel Silva Subject: [PATCH v6 01/13] media: staging/imx: refactor imx media device probe Date: Tue, 22 May 2018 15:52:33 +0100 Message-Id: <20180522145245.3143-2-rui.silva@linaro.org> X-Mailer: git-send-email 2.17.0 In-Reply-To: <20180522145245.3143-1-rui.silva@linaro.org> References: <20180522145245.3143-1-rui.silva@linaro.org> Sender: linux-media-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org Refactor and move media device initialization code to a new common module, so it can be used by other devices, this will allow for example a near to introduce imx7 CSI driver, to use this media device. Signed-off-by: Rui Miguel Silva --- drivers/staging/media/imx/Makefile | 1 + .../staging/media/imx/imx-media-dev-common.c | 100 ++++++++++++++++++ drivers/staging/media/imx/imx-media-dev.c | 86 ++++----------- drivers/staging/media/imx/imx-media-of.c | 6 +- drivers/staging/media/imx/imx-media.h | 15 +++ 5 files changed, 139 insertions(+), 69 deletions(-) create mode 100644 drivers/staging/media/imx/imx-media-dev-common.c -- 2.17.0 diff --git a/drivers/staging/media/imx/Makefile b/drivers/staging/media/imx/Makefile index 698a4210316e..a30b3033f9a3 100644 --- a/drivers/staging/media/imx/Makefile +++ b/drivers/staging/media/imx/Makefile @@ -1,5 +1,6 @@ # SPDX-License-Identifier: GPL-2.0 imx-media-objs := imx-media-dev.o imx-media-internal-sd.o imx-media-of.o +imx-media-objs += imx-media-dev-common.o imx-media-common-objs := imx-media-utils.o imx-media-fim.o imx-media-ic-objs := imx-ic-common.o imx-ic-prp.o imx-ic-prpencvf.o diff --git a/drivers/staging/media/imx/imx-media-dev-common.c b/drivers/staging/media/imx/imx-media-dev-common.c new file mode 100644 index 000000000000..98aea5f94174 --- /dev/null +++ b/drivers/staging/media/imx/imx-media-dev-common.c @@ -0,0 +1,100 @@ +// SPDX-License-Identifier: GPL +/* + * V4L2 Media Controller Driver for Freescale common i.MX5/6/7 SOC + * + * Copyright (c) 2018 Linaro Ltd + * Copyright (c) 2016 Mentor Graphics Inc. + */ + +#include +#include +#include "imx-media.h" + +static const struct v4l2_async_notifier_operations imx_media_subdev_ops = { + .bound = imx_media_subdev_bound, + .complete = imx_media_probe_complete, +}; + +static const struct media_device_ops imx_media_md_ops = { + .link_notify = imx_media_link_notify, +}; + +struct imx_media_dev *imx_media_dev_init(struct device *dev) +{ + struct imx_media_dev *imxmd; + int ret; + + imxmd = devm_kzalloc(dev, sizeof(*imxmd), GFP_KERNEL); + if (!imxmd) + return ERR_PTR(-ENOMEM); + + dev_set_drvdata(dev, imxmd); + + strlcpy(imxmd->md.model, "imx-media", sizeof(imxmd->md.model)); + imxmd->md.ops = &imx_media_md_ops; + imxmd->md.dev = dev; + + mutex_init(&imxmd->mutex); + + imxmd->v4l2_dev.mdev = &imxmd->md; + strlcpy(imxmd->v4l2_dev.name, "imx-media", + sizeof(imxmd->v4l2_dev.name)); + + media_device_init(&imxmd->md); + + ret = v4l2_device_register(dev, &imxmd->v4l2_dev); + if (ret < 0) { + v4l2_err(&imxmd->v4l2_dev, + "Failed to register v4l2_device: %d\n", ret); + goto cleanup; + } + + dev_set_drvdata(imxmd->v4l2_dev.dev, imxmd); + + INIT_LIST_HEAD(&imxmd->vdev_list); + + return imxmd; + +cleanup: + media_device_cleanup(&imxmd->md); + + return ERR_PTR(ret); +} +EXPORT_SYMBOL_GPL(imx_media_dev_init); + +int imx_media_dev_notifier_register(struct imx_media_dev *imxmd) +{ + int ret; + + /* no subdevs? just bail */ + if (imxmd->notifier.num_subdevs == 0) { + v4l2_err(&imxmd->v4l2_dev, "no subdevs\n"); + return -ENODEV; + } + + /* prepare the async subdev notifier and register it */ + imxmd->notifier.ops = &imx_media_subdev_ops; + ret = v4l2_async_notifier_register(&imxmd->v4l2_dev, + &imxmd->notifier); + if (ret) { + v4l2_err(&imxmd->v4l2_dev, + "v4l2_async_notifier_register failed with %d\n", ret); + return ret; + } + + return 0; +} +EXPORT_SYMBOL_GPL(imx_media_dev_notifier_register); + +void imx_media_dev_cleanup(struct imx_media_dev *imxmd) +{ + v4l2_device_unregister(&imxmd->v4l2_dev); + media_device_cleanup(&imxmd->md); +} +EXPORT_SYMBOL_GPL(imx_media_dev_cleanup); + +void imx_media_dev_notifier_unregister(struct imx_media_dev *imxmd) +{ + v4l2_async_notifier_cleanup(&imxmd->notifier); +} +EXPORT_SYMBOL_GPL(imx_media_dev_notifier_unregister); diff --git a/drivers/staging/media/imx/imx-media-dev.c b/drivers/staging/media/imx/imx-media-dev.c index 7e7bd1c6c81b..70fcaf2d358a 100644 --- a/drivers/staging/media/imx/imx-media-dev.c +++ b/drivers/staging/media/imx/imx-media-dev.c @@ -107,9 +107,9 @@ static int imx_media_get_ipu(struct imx_media_dev *imxmd, } /* async subdev bound notifier */ -static int imx_media_subdev_bound(struct v4l2_async_notifier *notifier, - struct v4l2_subdev *sd, - struct v4l2_async_subdev *asd) +int imx_media_subdev_bound(struct v4l2_async_notifier *notifier, + struct v4l2_subdev *sd, + struct v4l2_async_subdev *asd) { struct imx_media_dev *imxmd = notifier2dev(notifier); int ret = 0; @@ -293,7 +293,7 @@ static int imx_media_create_pad_vdev_lists(struct imx_media_dev *imxmd) } /* async subdev complete notifier */ -static int imx_media_probe_complete(struct v4l2_async_notifier *notifier) +int imx_media_probe_complete(struct v4l2_async_notifier *notifier) { struct imx_media_dev *imxmd = notifier2dev(notifier); int ret; @@ -317,11 +317,6 @@ static int imx_media_probe_complete(struct v4l2_async_notifier *notifier) return media_device_register(&imxmd->md); } -static const struct v4l2_async_notifier_operations imx_media_subdev_ops = { - .bound = imx_media_subdev_bound, - .complete = imx_media_probe_complete, -}; - /* * adds controls to a video device from an entity subdevice. * Continues upstream from the entity's sink pads. @@ -365,8 +360,8 @@ static int imx_media_inherit_controls(struct imx_media_dev *imxmd, return ret; } -static int imx_media_link_notify(struct media_link *link, u32 flags, - unsigned int notification) +int imx_media_link_notify(struct media_link *link, u32 flags, + unsigned int notification) { struct media_entity *source = link->source->entity; struct imx_media_pad_vdev *pad_vdev; @@ -429,10 +424,6 @@ static int imx_media_link_notify(struct media_link *link, u32 flags, return ret; } -static const struct media_device_ops imx_media_md_ops = { - .link_notify = imx_media_link_notify, -}; - static int imx_media_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; @@ -440,74 +431,36 @@ static int imx_media_probe(struct platform_device *pdev) struct imx_media_dev *imxmd; int ret; - imxmd = devm_kzalloc(dev, sizeof(*imxmd), GFP_KERNEL); - if (!imxmd) - return -ENOMEM; - - dev_set_drvdata(dev, imxmd); - - strlcpy(imxmd->md.model, "imx-media", sizeof(imxmd->md.model)); - imxmd->md.ops = &imx_media_md_ops; - imxmd->md.dev = dev; - - mutex_init(&imxmd->mutex); - - imxmd->v4l2_dev.mdev = &imxmd->md; - strlcpy(imxmd->v4l2_dev.name, "imx-media", - sizeof(imxmd->v4l2_dev.name)); - - media_device_init(&imxmd->md); - - ret = v4l2_device_register(dev, &imxmd->v4l2_dev); - if (ret < 0) { - v4l2_err(&imxmd->v4l2_dev, - "Failed to register v4l2_device: %d\n", ret); - goto cleanup; - } - - dev_set_drvdata(imxmd->v4l2_dev.dev, imxmd); - - INIT_LIST_HEAD(&imxmd->vdev_list); + imxmd = imx_media_dev_init(dev); + if (IS_ERR(imxmd)) + return PTR_ERR(imxmd); ret = imx_media_add_of_subdevs(imxmd, node); if (ret) { v4l2_err(&imxmd->v4l2_dev, "add_of_subdevs failed with %d\n", ret); - goto notifier_cleanup; + goto dev_cleanup; } ret = imx_media_add_internal_subdevs(imxmd); if (ret) { v4l2_err(&imxmd->v4l2_dev, "add_internal_subdevs failed with %d\n", ret); - goto notifier_cleanup; - } - - /* no subdevs? just bail */ - if (imxmd->notifier.num_subdevs == 0) { - ret = -ENODEV; - goto notifier_cleanup; + goto dev_cleanup; } - /* prepare the async subdev notifier and register it */ - imxmd->notifier.ops = &imx_media_subdev_ops; - ret = v4l2_async_notifier_register(&imxmd->v4l2_dev, - &imxmd->notifier); - if (ret) { - v4l2_err(&imxmd->v4l2_dev, - "v4l2_async_notifier_register failed with %d\n", ret); + ret = imx_media_dev_notifier_register(imxmd); + if (ret < 0) goto del_int; - } return 0; del_int: imx_media_remove_internal_subdevs(imxmd); -notifier_cleanup: - v4l2_async_notifier_cleanup(&imxmd->notifier); - v4l2_device_unregister(&imxmd->v4l2_dev); -cleanup: - media_device_cleanup(&imxmd->md); + +dev_cleanup: + imx_media_dev_cleanup(imxmd); + return ret; } @@ -520,10 +473,9 @@ static int imx_media_remove(struct platform_device *pdev) v4l2_async_notifier_unregister(&imxmd->notifier); imx_media_remove_internal_subdevs(imxmd); - v4l2_async_notifier_cleanup(&imxmd->notifier); - v4l2_device_unregister(&imxmd->v4l2_dev); + imx_media_dev_notifier_unregister(imxmd); media_device_unregister(&imxmd->md); - media_device_cleanup(&imxmd->md); + imx_media_dev_cleanup(imxmd); return 0; } diff --git a/drivers/staging/media/imx/imx-media-of.c b/drivers/staging/media/imx/imx-media-of.c index 1c9175433ba6..a0020cc7b3f3 100644 --- a/drivers/staging/media/imx/imx-media-of.c +++ b/drivers/staging/media/imx/imx-media-of.c @@ -20,7 +20,8 @@ #include