From patchwork Fri May 8 10:01:55 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jacopo Mondi X-Patchwork-Id: 3721 Return-Path: Received: from relay9-d.mail.gandi.net (relay9-d.mail.gandi.net [217.70.183.199]) by lancelot.ideasonboard.com (Postfix) with ESMTPS id 124B461690 for ; Fri, 8 May 2020 11:59:29 +0200 (CEST) X-Originating-IP: 2.224.242.101 Received: from localhost.localdomain (2-224-242-101.ip172.fastwebnet.it [2.224.242.101]) (Authenticated sender: jacopo@jmondi.org) by relay9-d.mail.gandi.net (Postfix) with ESMTPSA id 0EB70FF806; Fri, 8 May 2020 09:59:24 +0000 (UTC) From: Jacopo Mondi To: linux-media@vger.kernel.org (open list:MEDIA INPUT INFRASTRUCTURE (V4L/DVB)), libcamera-devel@lists.libcamera.org, Mauro Carvalho Chehab , Hans Verkuil , Sakari Ailus , Laurent Pinchart Cc: Jacopo Mondi , tfiga@google.com, pavel@ucw.cz Date: Fri, 8 May 2020 12:01:55 +0200 Message-Id: <20200508100158.3437161-11-jacopo@jmondi.org> X-Mailer: git-send-email 2.26.1 In-Reply-To: <20200508100158.3437161-1-jacopo@jmondi.org> References: <20200508100158.3437161-1-jacopo@jmondi.org> MIME-Version: 1.0 Subject: [libcamera-devel] [PATCH v10 10/13] media: v4l2-ctrls: Add helper to register properties X-BeenThere: libcamera-devel@lists.libcamera.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 08 May 2020 09:59:29 -0000 Add an helper function to v4l2-ctrls to register controls associated with a device property. Signed-off-by: Jacopo Mondi --- drivers/media/v4l2-core/v4l2-ctrls.c | 40 ++++++++++++++++++++++++++++ include/media/v4l2-ctrls.h | 26 ++++++++++++++++++ 2 files changed, 66 insertions(+) diff --git a/drivers/media/v4l2-core/v4l2-ctrls.c b/drivers/media/v4l2-core/v4l2-ctrls.c index 265452dae43bb..e4a679db55f09 100644 --- a/drivers/media/v4l2-core/v4l2-ctrls.c +++ b/drivers/media/v4l2-core/v4l2-ctrls.c @@ -16,6 +16,7 @@ #include #include #include +#include #include #define dprintk(vdev, fmt, arg...) do { \ @@ -4623,3 +4624,42 @@ __poll_t v4l2_ctrl_poll(struct file *file, struct poll_table_struct *wait) return 0; } EXPORT_SYMBOL(v4l2_ctrl_poll); + +int v4l2_ctrl_new_fwnode_properties(struct v4l2_ctrl_handler *hdl, + const struct v4l2_ctrl_ops *ctrl_ops, + const struct v4l2_fwnode_device_properties *p) +{ + if (p->orientation != V4L2_FWNODE_PROPERTY_UNSET) { + u32 orientation_ctrl; + + switch (p->orientation) { + case V4L2_FWNODE_ORIENTATION_FRONT: + orientation_ctrl = V4L2_ORIENTATION_FRONT; + break; + case V4L2_FWNODE_ORIENTATION_BACK: + orientation_ctrl = V4L2_ORIENTATION_BACK; + break; + case V4L2_FWNODE_ORIENTATION_EXTERNAL: + orientation_ctrl = V4L2_ORIENTATION_EXTERNAL; + break; + default: + return -EINVAL; + } + if (!v4l2_ctrl_new_std_menu(hdl, ctrl_ops, + V4L2_CID_CAMERA_ORIENTATION, + V4L2_ORIENTATION_EXTERNAL, 0, + orientation_ctrl)) + return hdl->error; + } + + if (p->rotation != V4L2_FWNODE_PROPERTY_UNSET) { + if (!v4l2_ctrl_new_std(hdl, ctrl_ops, + V4L2_CID_CAMERA_SENSOR_ROTATION, + p->rotation, p->rotation, 1, + p->rotation)) + return hdl->error; + } + + return hdl->error; +} +EXPORT_SYMBOL(v4l2_ctrl_new_fwnode_properties); diff --git a/include/media/v4l2-ctrls.h b/include/media/v4l2-ctrls.h index 224c10823bbff..f40e2cbb21d34 100644 --- a/include/media/v4l2-ctrls.h +++ b/include/media/v4l2-ctrls.h @@ -30,6 +30,7 @@ struct v4l2_ctrl; struct v4l2_ctrl_handler; struct v4l2_ctrl_helper; struct v4l2_fh; +struct v4l2_fwnode_device_properties; struct v4l2_subdev; struct v4l2_subscribed_event; struct video_device; @@ -1428,4 +1429,29 @@ int v4l2_ctrl_subdev_subscribe_event(struct v4l2_subdev *sd, struct v4l2_fh *fh, */ int v4l2_ctrl_subdev_log_status(struct v4l2_subdev *sd); +/** + * v4l2_ctrl_new_fwnode_properties() - Register controls for the device + * properties + * + * @hdl: pointer to &struct v4l2_ctrl_handler to register controls on + * @ctrl_ops: pointer to &struct v4l2_ctrl_ops to register controls with + * @p: pointer to &struct v4l2_fwnode_device_properties + * + * This function registers controls associated to device properties, using the + * property values contained in @p parameter, if the property has been set to + * a value. + * + * Currently the following v4l2 controls are parsed and registered: + * - V4L2_CID_CAMERA_ORIENTATION + * - V4L2_CID_CAMERA_SENSOR_ROTATION; + * + * Controls already registered by the caller with the @hdl control handler are + * not overwritten. Callers should register the controls they want to handle + * themselves before calling this function. + * + * Return: 0 on success, a negative error code on failure. + */ +int v4l2_ctrl_new_fwnode_properties(struct v4l2_ctrl_handler *hdl, + const struct v4l2_ctrl_ops *ctrl_ops, + const struct v4l2_fwnode_device_properties *p); #endif