kerneldevice: add method to retrieve manufacturer information

A USB device may report its manufacturer through the Manufacturer String
Descriptor. That information can sometimes be useful, e.g. MBIM doesn't
define a standard command to query the manufacturer. This patch adds a
method to MMKernelDevice to retrieve the manufacturer information from
the underlying physical device, which can later be used by
MMBroadbandModemMbim to report the manufacturer of a MBIM modem.

1 files changed, 16 insertions, 0 deletions

diff --git a/src/kerneldevice/mm-kernel-device-udev.c b/src/kerneldevice/mm-kernel-device-udev.c
index a5e5c80b..c07d7b44 100644
--- a/src/kerneldevice/mm-kernel-device-udev.c
+++ b/src/kerneldevice/mm-kernel-device-udev.c
@@ -384,6 +384,21 @@ kernel_device_get_physdev_pid (MMKernelDevice *_self)
 }
 
 static const gchar *
+kernel_device_get_physdev_manufacturer (MMKernelDevice *_self)
+{
+    MMKernelDeviceUdev *self;
+
+    g_return_val_if_fail (MM_IS_KERNEL_DEVICE_UDEV (_self), NULL);
+
+    self = MM_KERNEL_DEVICE_UDEV (_self);
+    ensure_physdev (self);
+    if (!self->priv->physdev)
+        return NULL;
+
+    return g_udev_device_get_sysfs_attr (self->priv->physdev, "manufacturer");
+}
+
+static const gchar *
 kernel_device_get_parent_sysfs_path (MMKernelDevice *_self)
 {
     MMKernelDeviceUdev *self;
@@ -864,6 +879,7 @@ mm_kernel_device_udev_class_init (MMKernelDeviceUdevClass *klass)
     kernel_device_class->get_physdev_uid                = kernel_device_get_physdev_uid;
     kernel_device_class->get_physdev_vid                = kernel_device_get_physdev_vid;
     kernel_device_class->get_physdev_pid                = kernel_device_get_physdev_pid;
+    kernel_device_class->get_physdev_manufacturer       = kernel_device_get_physdev_manufacturer;
     kernel_device_class->get_parent_sysfs_path          = kernel_device_get_parent_sysfs_path;
     kernel_device_class->is_candidate                   = kernel_device_is_candidate;
     kernel_device_class->cmp                            = kernel_device_cmp;