A PD-capable device can return up to 3 Product Type VDOs as part of its
DiscoverIdentity Response (USB PD Spec, Rev 3.0, Version 2.0, Section
6.4.4.3.1). Add a sysfs attribute to expose these to userspace.
Cc: Benson Leung <ble...@chromium.org>
Cc: Heikki Krogerus <heikki.kroge...@linux.intel.com>
Signed-off-by: Prashant Malani <pmal...@chromium.org>
---
drivers/usb/typec/class.c | 10 ++++++++++
1 file changed, 10 insertions(+)
diff --git a/drivers/usb/typec/class.c b/drivers/usb/typec/class.c
index 35eec707cb51..e6abb0dee9fa 100644
--- a/drivers/usb/typec/class.c
+++ b/drivers/usb/typec/class.c
@@ -122,10 +122,20 @@ static ssize_t product_show(struct device *dev, struct
device_attribute *attr,
}
static DEVICE_ATTR_RO(product);
+static ssize_t product_type_vdo_show(struct device *dev, struct
device_attribute *attr,
+ char *buf)
+{
+ struct usb_pd_identity *id = get_pd_identity(dev);
+
+ return sprintf(buf, "0x%08x\n0x%08x\n0x%08x\n", id->vdo[0], id->vdo[1],
id->vdo[2]);
+}
+static DEVICE_ATTR_RO(product_type_vdo);
+
static struct attribute *usb_pd_id_attrs[] = {
&dev_attr_id_header.attr,
&dev_attr_cert_stat.attr,
&dev_attr_product.attr,
+ &dev_attr_product_type_vdo.attr,
NULL
};
--
2.29.0.rc1.297.gfa9743e501-goog
