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author | Bjorn Andersson <bjorn.andersson@linaro.org> | 2017-01-11 06:35:13 -0800 |
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committer | Bjorn Andersson <bjorn.andersson@linaro.org> | 2017-01-18 10:43:15 -0800 |
commit | 0be363bf4bf7addac30b84e2d6749e5a33296b6d (patch) | |
tree | 1b3f1ee72f837d54b8a73224aab313ca9639044a /drivers/rpmsg | |
parent | c0cdc19f84a4712cf74888f83af286e3c2e14efd (diff) | |
download | linux-stable-0be363bf4bf7addac30b84e2d6749e5a33296b6d.tar.gz linux-stable-0be363bf4bf7addac30b84e2d6749e5a33296b6d.tar.bz2 linux-stable-0be363bf4bf7addac30b84e2d6749e5a33296b6d.zip |
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>
Diffstat (limited to 'drivers/rpmsg')
-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 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; |