diff options
| author | Bjorn Andersson <bjorn.andersson@linaro.org> | 2017-01-11 06:35:13 -0800 |
|---|---|---|
| committer | Marcel Ziswiler <marcel.ziswiler@toradex.com> | 2020-04-15 01:24:40 +0200 |
| commit | b391d8ecd6c9fccfd6cadd08d47f929fb8ec098d (patch) | |
| tree | 7e02d7f8de936804fbeb93075f7de6549071858e | |
| parent | 75f3d51937d7a99bf37a17132077e4d11d3ec50d (diff) | |
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: Bjorn Andersson <bjorn.andersson@linaro.org>
| -rw-r--r-- | drivers/rpmsg/qcom_smd.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/drivers/rpmsg/qcom_smd.c b/drivers/rpmsg/qcom_smd.c index 011d9bb8a6ae..db5a6f82dd7c 100644 --- a/drivers/rpmsg/qcom_smd.c +++ b/drivers/rpmsg/qcom_smd.c @@ -1006,6 +1006,20 @@ 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. @@ -1344,6 +1358,12 @@ 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; |