Add support for the "label" property, used to give the edge a name other than the one of the DT node. This allows the implementor to provide consistently named edges when using the rpmsg character device.
Signed-off-by: Bjorn Andersson <[email protected]> --- Changes since v1: - Moved sysfs attribute to the correct (this) patch drivers/rpmsg/qcom_smd.c | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) diff --git a/drivers/rpmsg/qcom_smd.c b/drivers/rpmsg/qcom_smd.c index 1b1f18373d89..3b77320fb8c9 100644 --- a/drivers/rpmsg/qcom_smd.c +++ b/drivers/rpmsg/qcom_smd.c @@ -117,6 +117,8 @@ static const struct { struct qcom_smd_edge { struct device dev; + const char *name; + struct device_node *of_node; unsigned edge_id; unsigned remote_pid; @@ -1248,6 +1250,10 @@ static int qcom_smd_parse_edge(struct device *dev, return -EINVAL; } + ret = of_property_read_string(node, "label", &edge->name); + if (ret < 0) + edge->name = node->name; + irq = irq_of_parse_and_map(node, 0); if (irq < 0) { dev_err(dev, "required smd interrupt missing\n"); @@ -1285,6 +1291,21 @@ static void qcom_smd_edge_release(struct device *dev) kfree(edge); } +static ssize_t rpmsg_name_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct qcom_smd_edge *edge = to_smd_edge(dev); + + return sprintf(buf, "%s\n", edge->name); +} +static DEVICE_ATTR_RO(rpmsg_name); + +static struct attribute *qcom_smd_edge_attrs[] = { + &dev_attr_rpmsg_name.attr, + NULL +}; +ATTRIBUTE_GROUPS(qcom_smd_edge); + /** * qcom_smd_register_edge() - register an edge based on an device_node * @parent: parent device for the edge @@ -1306,6 +1327,7 @@ struct qcom_smd_edge *qcom_smd_register_edge(struct device *parent, edge->dev.parent = parent; edge->dev.release = qcom_smd_edge_release; + edge->dev.groups = qcom_smd_edge_groups; dev_set_name(&edge->dev, "%s:%s", dev_name(parent), node->name); ret = device_register(&edge->dev); if (ret) { -- 2.5.0
