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: Bjorn Andersson <[email protected]> --- Changes since v2: - None Changes since v1: - Moved rpmsg_name attribute to different patch drivers/rpmsg/qcom_smd.c | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) diff --git a/drivers/rpmsg/qcom_smd.c b/drivers/rpmsg/qcom_smd.c index 9e2af6a18aa2..beaef5dd973e 100644 --- a/drivers/rpmsg/qcom_smd.c +++ b/drivers/rpmsg/qcom_smd.c @@ -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; -- 2.11.0
