{"id":3702,"url":"https://patchwork.libcamera.org/api/covers/3702/?format=json","web_url":"https://patchwork.libcamera.org/cover/3702/","project":{"id":1,"url":"https://patchwork.libcamera.org/api/projects/1/?format=json","name":"libcamera","link_name":"libcamera","list_id":"libcamera_core","list_email":"libcamera-devel@lists.libcamera.org","web_url":"","scm_url":"","webscm_url":""},"msgid":"<20200507151253.2951492-1-jacopo@jmondi.org>","date":"2020-05-07T15:12:47","name":"[libcamera-devel,v7,0/6] media: Register read-only sub-dev devnode","submitter":{"id":3,"url":"https://patchwork.libcamera.org/api/people/3/?format=json","name":"Jacopo Mondi","email":"jacopo@jmondi.org"},"mbox":"https://patchwork.libcamera.org/cover/3702/mbox/","series":[{"id":885,"url":"https://patchwork.libcamera.org/api/series/885/?format=json","web_url":"https://patchwork.libcamera.org/project/libcamera/list/?series=885","date":"2020-05-07T15:12:47","name":"media: Register read-only sub-dev devnode","version":7,"mbox":"https://patchwork.libcamera.org/series/885/mbox/"}],"comments":"https://patchwork.libcamera.org/api/covers/3702/comments/","headers":{"Return-Path":"","Received":["from relay12.mail.gandi.net (relay12.mail.gandi.net\n\t[217.70.178.232])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTPS id C09EA603EA\n\tfor ;\n\tThu, 7 May 2020 17:09:47 +0200 (CEST)","from localhost.localdomain (2-224-242-101.ip172.fastwebnet.it\n\t[2.224.242.101]) (Authenticated sender: jacopo@jmondi.org)\n\tby relay12.mail.gandi.net (Postfix) with ESMTPSA id 97DDD20001B;\n\tThu, 7 May 2020 15:09:45 +0000 (UTC)"],"From":"Jacopo Mondi ","To":"linux-media@vger.kernel.org,\n\tlibcamera-devel@lists.libcamera.org","Cc":"Jacopo Mondi , mchehab@kernel.org,\n\thverkuil-cisco@xs4all.nl, sakari.ailus@linux.intel.com,\n\tandrey.konovalov@linaro.org, laurent.pinchart@ideasonboard.com","Date":"Thu, 7 May 2020 17:12:47 +0200","Message-Id":"<20200507151253.2951492-1-jacopo@jmondi.org>","X-Mailer":"git-send-email 2.26.1","MIME-Version":"1.0","Content-Transfer-Encoding":"8bit","Subject":"[libcamera-devel] [PATCH v7 0/6] media: Register read-only sub-dev\n\tdevnode","X-BeenThere":"libcamera-devel@lists.libcamera.org","X-Mailman-Version":"2.1.29","Precedence":"list","List-Id":"","List-Unsubscribe":",\n\t","List-Archive":"","List-Post":"","List-Help":"","List-Subscribe":",\n\t","X-List-Received-Date":"Thu, 07 May 2020 15:09:47 -0000"},"content":"Hello,\n dropped V4L2_SUBDEV_CAP_RW_SUBDEV as requested by Hans, updated documentation\nand commit messages accordingly.\n\nThanks\n j\n\nv6->v7:\n- Drop V4L2_SUBDEV_CAP_RW_SUBDEV\n\nv5.1->v6:\n- Add __u32 reserved[14] field to struct v4l2_subdev_capabilities\n- s/v4l2_subdev_capabilities.subdev_cap/v4l2_subdev_capabilities.capabilities\n- Update documentation accordingly\n\nv5->v5.1:\n- Replace\n \"media: v4l2-subdev: Assume V4L2_SUBDEV_API is selected\"\n with\n \"media: v4l2-subdev: Guard whole fops and ioctl hdlr\"\n\nv4->v5:\n- Add \"media: v4l2-subdev: Assume V4L2_SUBDEV_API is selected\"\n- Use BIT() instead of manual bitshifting\n- Use tabs in documentation in place of 8 spaces\n- minor documentation fixes\n\nv3->v4:\n- Rebase v3 on latest media master and new documentation layout\n- Add SUBDEV_QUERYCAP support\n\nv2->v3:\n- Add Sakari's ack to the series\n- Documentation:\n - Address Sakari' and Hans suggestions\n- Implementation:\n - Rename V4L2_FL_RO_DEVNODE to V4L2_FL_SUBDEV_RO_DEVNODE\n - Limit the ability to register sub-device video device nodes to\n driver claiming support for CONFIG_VIDEO_V4L2_SUBDEV_API\n\nv1->v2:\n- Documentation:\n - Add a new patch using Laurent's suggestion to update the sub-device\n userspace API introduction\n - Take in some of Laurent's suggestions in v4l2-subdev.rst and add a new\n section in dev-subdev.rst\n- Implementation:\n - As noted by Andrey, V4L2_FL_* are meant to be used as bitmasks. Use\n test_bit()/set_bit() as the rest of the v4l2 core does. It's a bit an\n overkill compared to use plain BIT() as noted by Sakari but I preferred\n consistency with the rest of the core\n - Make v4l2_device_register_subdev_nodes() and\n v4l2_device_register_ro_subdev_nodes() to v4l2-device.h and make them\n inline functions. Documentation style has been copied from other functions\n with similar implementations, such as __video_register_device() in\n v4l2-dev.h\n\nHans Verkuil (2):\n v4l2-subdev: add VIDIOC_SUBDEV_QUERYCAP ioctl\n v4l: document VIDIOC_SUBDEV_QUERYCAP\n\nJacopo Mondi (4):\n Documentation: media: Update sub-device API intro\n Documentation: media: Document read-only subdevice\n media: v4l2-dev: Add v4l2_device_register_ro_subdev_node()\n media: v4l2-subdev: Guard whole fops and ioctl hdlr\n\n .../driver-api/media/v4l2-subdev.rst | 53 ++++++++-\n .../userspace-api/media/v4l/dev-subdev.rst | 5 +\n .../userspace-api/media/v4l/user-func.rst | 1 +\n .../media/v4l/vidioc-g-dv-timings.rst | 6 +\n .../userspace-api/media/v4l/vidioc-g-std.rst | 6 +\n .../media/v4l/vidioc-subdev-g-crop.rst | 9 ++\n .../media/v4l/vidioc-subdev-g-fmt.rst | 8 ++\n .../v4l/vidioc-subdev-g-frame-interval.rst | 8 ++\n .../media/v4l/vidioc-subdev-g-selection.rst | 8 ++\n .../media/v4l/vidioc-subdev-querycap.rst | 112 ++++++++++++++++++\n drivers/media/v4l2-core/v4l2-device.c | 7 +-\n drivers/media/v4l2-core/v4l2-subdev.c | 69 +++++++++--\n include/media/v4l2-dev.h | 7 ++\n include/media/v4l2-device.h | 50 +++++++-\n include/uapi/linux/v4l2-subdev.h | 16 +++\n 15 files changed, 349 insertions(+), 16 deletions(-)\n create mode 100644 Documentation/userspace-api/media/v4l/vidioc-subdev-querycap.rst\n\n--\n2.26.1"}