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authorBjorn Andersson <bjorn.andersson@linaro.org>2016-12-02 14:06:02 -0800
committerBjorn Andersson <bjorn.andersson@linaro.org>2017-01-18 10:43:15 -0800
commit5e53c42c33bbde53a2650c6aa7201ec63bbfdc49 (patch)
tree16ad2ddbacd6d840977ee9cf18d6b38180bee088 /drivers/rpmsg/qcom_smd.c
parent49def1853334396f948dcb4cedb9347abb318df5 (diff)
rpmsg: qcom_smd: Add support for "label" property
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 <bjorn.andersson@linaro.org>
Diffstat (limited to 'drivers/rpmsg/qcom_smd.c')
-rw-r--r--drivers/rpmsg/qcom_smd.c22
1 files changed, 22 insertions, 0 deletions
diff --git a/drivers/rpmsg/qcom_smd.c b/drivers/rpmsg/qcom_smd.c
index 0fae48116a0d..3dd73edaa525 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) {

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