{"id":3483,"url":"https://patchwork.libcamera.org/api/patches/3483/?format=json","web_url":"https://patchwork.libcamera.org/patch/3483/","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":"<20200417124110.72313-10-jacopo@jmondi.org>","date":"2020-04-17T12:41:08","name":"[libcamera-devel,v9,09/11] media: v4l2-ctrls: Add helper to register properties","commit_ref":null,"pull_url":null,"state":"not-applicable","archived":false,"hash":"dacd95dc3132f3baf292e1619fe3810d34a8cfd7","submitter":{"id":3,"url":"https://patchwork.libcamera.org/api/people/3/?format=json","name":"Jacopo Mondi","email":"jacopo@jmondi.org"},"delegate":{"id":15,"url":"https://patchwork.libcamera.org/api/users/15/?format=json","username":"jmondi","first_name":"Jacopo","last_name":"Mondi","email":"jacopo@jmondi.org"},"mbox":"https://patchwork.libcamera.org/patch/3483/mbox/","series":[{"id":815,"url":"https://patchwork.libcamera.org/api/series/815/?format=json","web_url":"https://patchwork.libcamera.org/project/libcamera/list/?series=815","date":"2020-04-17T12:40:59","name":"media: report camera sensor properties","version":9,"mbox":"https://patchwork.libcamera.org/series/815/mbox/"}],"comments":"https://patchwork.libcamera.org/api/patches/3483/comments/","check":"pending","checks":"https://patchwork.libcamera.org/api/patches/3483/checks/","tags":{},"headers":{"Return-Path":"","Received":["from relay3-d.mail.gandi.net (relay3-d.mail.gandi.net\n\t[217.70.183.195])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTPS id B41A960402\n\tfor ;\n\tFri, 17 Apr 2020 14:38:48 +0200 (CEST)","from uno.homenet.telecomitalia.it (unknown [87.13.136.104])\n\t(Authenticated sender: jacopo@jmondi.org)\n\tby relay3-d.mail.gandi.net (Postfix) with ESMTPSA id 1F7E460022;\n\tFri, 17 Apr 2020 12:38:45 +0000 (UTC)"],"X-Originating-IP":"87.13.136.104","From":"Jacopo Mondi ","To":"Mauro Carvalho Chehab ,\n\tHans Verkuil ,\n\tSakari Ailus ,\n\tLaurent Pinchart , tfiga@google.com,\n\tpavel@ucw.cz","Cc":"Jacopo Mondi ,\n\tlinux-media@vger.kernel.org (open list:MEDIA INPUT INFRASTRUCTURE\n\t(V4L/DVB)), libcamera-devel@lists.libcamera.org","Date":"Fri, 17 Apr 2020 14:41:08 +0200","Message-Id":"<20200417124110.72313-10-jacopo@jmondi.org>","X-Mailer":"git-send-email 2.26.1","In-Reply-To":"<20200417124110.72313-1-jacopo@jmondi.org>","References":"<20200417124110.72313-1-jacopo@jmondi.org>","MIME-Version":"1.0","Content-Transfer-Encoding":"8bit","Subject":"[libcamera-devel] [PATCH v9 09/11] media: v4l2-ctrls: Add helper to\n\tregister properties","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":"Fri, 17 Apr 2020 12:38:48 -0000"},"content":"Add an helper function to v4l2-ctrls to register controls associated\nwith a device property.\n\nSigned-off-by: Jacopo Mondi \n---\n drivers/media/v4l2-core/v4l2-ctrls.c | 40 ++++++++++++++++++++++++++++\n include/media/v4l2-ctrls.h | 26 ++++++++++++++++++\n 2 files changed, 66 insertions(+)","diff":"diff --git a/drivers/media/v4l2-core/v4l2-ctrls.c b/drivers/media/v4l2-core/v4l2-ctrls.c\nindex 03029f92f8f3..539fa9e71c0e 100644\n--- a/drivers/media/v4l2-core/v4l2-ctrls.c\n+++ b/drivers/media/v4l2-core/v4l2-ctrls.c\n@@ -16,6 +16,7 @@\n #include \n #include \n #include \n+#include \n #include \n \n #define dprintk(vdev, fmt, arg...) do {\t\t\t\t\t\\\n@@ -4601,3 +4602,42 @@ __poll_t v4l2_ctrl_poll(struct file *file, struct poll_table_struct *wait)\n \treturn 0;\n }\n EXPORT_SYMBOL(v4l2_ctrl_poll);\n+\n+int v4l2_ctrl_new_fwnode_properties(struct v4l2_ctrl_handler *hdl,\n+\t\t\t\t const struct v4l2_ctrl_ops *ctrl_ops,\n+\t\t\t\t const struct v4l2_fwnode_device_properties *p)\n+{\n+\tif (p->location != V4L2_FWNODE_PROPERTY_UNSET) {\n+\t\tu32 location_ctrl;\n+\n+\t\tswitch (p->location) {\n+\t\tcase V4L2_FWNODE_LOCATION_FRONT:\n+\t\t\tlocation_ctrl = V4L2_LOCATION_FRONT;\n+\t\t\tbreak;\n+\t\tcase V4L2_FWNODE_LOCATION_BACK:\n+\t\t\tlocation_ctrl = V4L2_LOCATION_BACK;\n+\t\t\tbreak;\n+\t\tcase V4L2_FWNODE_LOCATION_EXTERNAL:\n+\t\t\tlocation_ctrl = V4L2_LOCATION_EXTERNAL;\n+\t\t\tbreak;\n+\t\tdefault:\n+\t\t\treturn -EINVAL;\n+\t\t}\n+\t\tif (!v4l2_ctrl_new_std(hdl, ctrl_ops,\n+\t\t\t\t V4L2_CID_CAMERA_SENSOR_LOCATION,\n+\t\t\t\t location_ctrl, location_ctrl, 1,\n+\t\t\t\t location_ctrl))\n+\t\t\treturn hdl->error;\n+\t}\n+\n+\tif (p->rotation != V4L2_FWNODE_PROPERTY_UNSET) {\n+\t\tif (!v4l2_ctrl_new_std(hdl, ctrl_ops,\n+\t\t\t\t V4L2_CID_CAMERA_SENSOR_ROTATION,\n+\t\t\t\t p->rotation, p->rotation, 1,\n+\t\t\t\t p->rotation))\n+\t\t\treturn hdl->error;\n+\t}\n+\n+\treturn hdl->error;\n+}\n+EXPORT_SYMBOL(v4l2_ctrl_new_fwnode_properties);\ndiff --git a/include/media/v4l2-ctrls.h b/include/media/v4l2-ctrls.h\nindex cf59abafb0d9..409c800ab1f5 100644\n--- a/include/media/v4l2-ctrls.h\n+++ b/include/media/v4l2-ctrls.h\n@@ -30,6 +30,7 @@ struct v4l2_ctrl;\n struct v4l2_ctrl_handler;\n struct v4l2_ctrl_helper;\n struct v4l2_fh;\n+struct v4l2_fwnode_device_properties;\n struct v4l2_subdev;\n struct v4l2_subscribed_event;\n struct video_device;\n@@ -1417,4 +1418,29 @@ int v4l2_ctrl_subdev_subscribe_event(struct v4l2_subdev *sd, struct v4l2_fh *fh,\n */\n int v4l2_ctrl_subdev_log_status(struct v4l2_subdev *sd);\n \n+/**\n+ * v4l2_ctrl_new_fwnode_properties() - Register controls for the device\n+ *\t\t\t\t properties\n+ *\n+ * @hdl: pointer to &struct v4l2_ctrl_handler to register controls on\n+ * @ctrl_ops: pointer to &struct v4l2_ctrl_ops to register controls with\n+ * @p: pointer to &struct v4l2_fwnode_device_properties\n+ *\n+ * This function registers controls associated to device properties, using the\n+ * property values contained in @p parameter, if the property has been set to\n+ * a value.\n+ *\n+ * Currently the following v4l2 controls are parsed and registered:\n+ * - V4L2_CID_CAMERA_SENSOR_LOCATION;\n+ * - V4L2_CID_CAMERA_SENSOR_ROTATION;\n+ *\n+ * Controls already registered by the caller with the @hdl control handler are\n+ * not overwritten. Callers should register the controls they want to handle\n+ * themselves before calling this function.\n+ *\n+ * Return: 0 on success, a negative error code on failure.\n+ */\n+int v4l2_ctrl_new_fwnode_properties(struct v4l2_ctrl_handler *hdl,\n+\t\t\t\t const struct v4l2_ctrl_ops *ctrl_ops,\n+\t\t\t\t const struct v4l2_fwnode_device_properties *p);\n #endif\n","prefixes":["libcamera-devel","v9","09/11"]}