USB: serial: add Google simple serial SubClass support

Add support for Google devices that export simple serial
interfaces using the vendor specific SubClass/Protocol pair
0x50/0x01.

Signed-off-by: Anton Staaf <robotboy@chromium.org>
Reviewed-by: Benson Leung <bleung@chromium.org>
[johan: move id entries and update Kconfig]
Signed-off-by: Johan Hovold <johan@kernel.org>

2 files changed, 11 insertions, 0 deletions

diff --git a/drivers/usb/serial/Kconfig b/drivers/usb/serial/Kconfig
index d185613bbd7d..b7cf1982d1d9 100644
--- a/drivers/usb/serial/Kconfig
+++ b/drivers/usb/serial/Kconfig
@@ -60,6 +60,7 @@ config USB_SERIAL_SIMPLE
                 - Suunto ANT+ USB device.
                 - Medtronic CareLink USB device
                 - Fundamental Software dongle.
+                - Google USB serial devices
                 - HP4x calculators
                 - a number of Motorola phones
                 - Novatel Wireless GPS receivers
diff --git a/drivers/usb/serial/usb-serial-simple.c b/drivers/usb/serial/usb-serial-simple.c
index 7064eb8d6142..bc310112eae9 100644
--- a/drivers/usb/serial/usb-serial-simple.c
+++ b/drivers/usb/serial/usb-serial-simple.c
@@ -56,6 +56,14 @@ DEVICE(funsoft, FUNSOFT_IDS);
         { USB_DEVICE(0x8087, 0x0716) }
 DEVICE(flashloader, FLASHLOADER_IDS);
 
+/* Google Serial USB SubClass */
+#define GOOGLE_IDS()                                            \
+        { USB_VENDOR_AND_INTERFACE_INFO(0x18d1,                 \
+                                        USB_CLASS_VENDOR_SPEC,  \
+                                        0x50,                   \
+                                        0x01) }
+DEVICE(google, GOOGLE_IDS);
+
 /* ViVOpay USB Serial Driver */
 #define VIVOPAY_IDS()                   \
         { USB_DEVICE(0x1d5f, 0x1004) }  /* ViVOpay 8800 */
@@ -97,6 +105,7 @@ static struct usb_serial_driver * const serial_drivers[] = {
         &zio_device,
         &funsoft_device,
         &flashloader_device,
+        &google_device,
         &vivopay_device,
         &moto_modem_device,
         &novatel_gps_device,
@@ -111,6 +120,7 @@ static const struct usb_device_id id_table[] = {
         ZIO_IDS(),
         FUNSOFT_IDS(),
         FLASHLOADER_IDS(),
+        GOOGLE_IDS(),
         VIVOPAY_IDS(),
         MOTO_IDS(),
         NOVATEL_IDS(),