Commit 0be363bf authored by Bjorn Andersson's avatar Bjorn Andersson
Browse files

rpmsg: smd: Register rpmsg user space interface for edges 



Create and register a rpmsg device for use with the rpmsg user space
interface, allowing user space to access SMD channels.

Also provide the "rpmsg_name" device attribute to expose the edge name
in sysfs, allowing the user to write udev rules for specific rpmsg
devices and their children.

Signed-off-by: default avatarBjorn Andersson <bjorn.andersson@linaro.org>
parent c0cdc19f

drivers/rpmsg/qcom_smd.c

+20 −0
Original line number Diff line number Diff line
@@ -1002,6 +1002,20 @@ static int qcom_smd_create_device(struct qcom_smd_channel *channel) 
	return rpmsg_register_device(rpdev);

}



static int qcom_smd_create_chrdev(struct qcom_smd_edge *edge)

{

	struct qcom_smd_device *qsdev;



	qsdev = kzalloc(sizeof(*qsdev), GFP_KERNEL);

	if (!qsdev)

		return -ENOMEM;



	qsdev->edge = edge;

	qsdev->rpdev.ops = &qcom_smd_device_ops;

	qsdev->rpdev.dev.parent = &edge->dev;

	return rpmsg_chrdev_register_device(&qsdev->rpdev);

}



/*

 * Allocate the qcom_smd_channel object for a newly found smd channel,

 * retrieving and validating the smem items involved.
@@ -1357,6 +1371,12 @@ struct qcom_smd_edge *qcom_smd_register_edge(struct device *parent, 
		goto unregister_dev;

	}



	ret = qcom_smd_create_chrdev(edge);

	if (ret) {

		dev_err(&edge->dev, "failed to register chrdev for edge\n");

		goto unregister_dev;

	}



	schedule_work(&edge->scan_work);



	return edge;

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