[PATCH v2 6/6] rpmsg: glink: Expose rpmsg name attr for glink

Chris Lew
2018-04-26T02:08:58Z

Expose the name field as an attr so clients listening to uevents for
rpmsg can identify the edge the events correspond to.

Signed-off-by: Chris Lew <clew@codeaurora.org>
---

Changes since v1:
- Add const to attribute struct
- Get name from glink channel

drivers/rpmsg/qcom_glink_native.c | 18 ++++++++++++++++++
1 file changed, 18 insertions(+)

diff --git a/drivers/rpmsg/qcom_glink_native.c b/drivers/rpmsg/qcom_glink_native.c
index 1418926f6110..72240614d4ca 100644
--- a/drivers/rpmsg/qcom_glink_native.c
+++ b/drivers/rpmsg/qcom_glink_native.c
@@ -1552,6 +1552,22 @@ static void qcom_glink_work(struct work_struct *work)
}
}

+static ssize_t rpmsg_name_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct rpmsg_device *rpdev = to_rpmsg_device(dev);
+ struct glink_channel *channel = to_glink_channel(rpdev->ept);
+
+ return snprintf(buf, RPMSG_NAME_SIZE, "%s\n", channel->glink->name);
+}
+static DEVICE_ATTR_RO(rpmsg_name);
+
+static const struct attribute *qcom_glink_attrs[] = {
+ &dev_attr_rpmsg_name.attr,
+ NULL
+};
+ATTRIBUTE_GROUPS(qcom_glink);
+
static void qcom_glink_device_release(struct device *dev)
{
struct rpmsg_device *rpdev = to_rpmsg_device(dev);
@@ -1601,6 +1617,8 @@ struct qcom_glink *qcom_glink_native_probe(struct device *dev,
return ERR_PTR(-ENOMEM);

glink->dev = dev;
+ glink->dev->groups = qcom_glink_groups;
+
glink->tx_pipe = tx;
glink->rx_pipe = rx;