thunderbolt: Read vendor and device name from DROM
The device DROM contains name of the vendor and device among other
things. Extract this information and expose it to the userspace via two
new attributes.
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Reviewed-by: Yehezkel Bernat <yehezkel.bernat@intel.com>
Reviewed-by: Michael Jamet <michael.jamet@intel.com>
Signed-off-by: Andreas Noever <andreas.noever@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/drivers/thunderbolt/switch.c b/drivers/thunderbolt/switch.c
index 2390f08..11f16a1 100644
--- a/drivers/thunderbolt/switch.c
+++ b/drivers/thunderbolt/switch.c
@@ -319,6 +319,15 @@
}
static DEVICE_ATTR_RO(device);
+static ssize_t
+device_name_show(struct device *dev, struct device_attribute *attr, char *buf)
+{
+ struct tb_switch *sw = tb_to_switch(dev);
+
+ return sprintf(buf, "%s\n", sw->device_name ? sw->device_name : "");
+}
+static DEVICE_ATTR_RO(device_name);
+
static ssize_t vendor_show(struct device *dev, struct device_attribute *attr,
char *buf)
{
@@ -328,6 +337,15 @@
}
static DEVICE_ATTR_RO(vendor);
+static ssize_t
+vendor_name_show(struct device *dev, struct device_attribute *attr, char *buf)
+{
+ struct tb_switch *sw = tb_to_switch(dev);
+
+ return sprintf(buf, "%s\n", sw->vendor_name ? sw->vendor_name : "");
+}
+static DEVICE_ATTR_RO(vendor_name);
+
static ssize_t unique_id_show(struct device *dev, struct device_attribute *attr,
char *buf)
{
@@ -339,7 +357,9 @@
static struct attribute *switch_attrs[] = {
&dev_attr_device.attr,
+ &dev_attr_device_name.attr,
&dev_attr_vendor.attr,
+ &dev_attr_vendor_name.attr,
&dev_attr_unique_id.attr,
NULL,
};
@@ -358,6 +378,8 @@
struct tb_switch *sw = tb_to_switch(dev);
kfree(sw->uuid);
+ kfree(sw->device_name);
+ kfree(sw->vendor_name);
kfree(sw->ports);
kfree(sw->drom);
kfree(sw);