hwrng: chaoskey - Add support for Araneus Alea I USB RNG

Adds support for the Araneus Alea I USB hardware Random Number
Generator which is interfaced with in exactly the same way as the
Altus Metrum ChaosKey.  We just add the appropriate device ID and
modify the config help text.

Signed-off-by: Bob Ham <bob.ham@collabora.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

2 files changed, 10 insertions, 5 deletions

diff --git a/drivers/usb/misc/Kconfig b/drivers/usb/misc/Kconfig
index e9e5ae521fa6..6e705971d637 100644
--- a/drivers/usb/misc/Kconfig
+++ b/drivers/usb/misc/Kconfig
@@ -260,11 +260,12 @@ config USB_CHAOSKEY
         tristate "ChaosKey random number generator driver support"
         depends on HW_RANDOM
         help
-          Say Y here if you want to connect an AltusMetrum ChaosKey to
-          your computer's USB port. The ChaosKey is a hardware random
-          number generator which hooks into the kernel entropy pool to
-          ensure a large supply of entropy for /dev/random and
-          /dev/urandom and also provides direct access via /dev/chaoskeyX
+          Say Y here if you want to connect an AltusMetrum ChaosKey or
+          Araneus Alea I to your computer's USB port. These devices
+          are hardware random number generators which hook into the
+          kernel entropy pool to ensure a large supply of entropy for
+          /dev/random and /dev/urandom and also provides direct access
+          via /dev/chaoskeyX
 
           To compile this driver as a module, choose M here: the
           module will be called chaoskey.
diff --git a/drivers/usb/misc/chaoskey.c b/drivers/usb/misc/chaoskey.c
index 76350e4ee807..9aef46b3dfa8 100644
--- a/drivers/usb/misc/chaoskey.c
+++ b/drivers/usb/misc/chaoskey.c
@@ -55,6 +55,9 @@ MODULE_LICENSE("GPL");
 #define CHAOSKEY_VENDOR_ID      0x1d50  /* OpenMoko */
 #define CHAOSKEY_PRODUCT_ID     0x60c6  /* ChaosKey */
 
+#define ALEA_VENDOR_ID          0x12d8  /* Araneus */
+#define ALEA_PRODUCT_ID         0x0001  /* Alea I */
+
 #define CHAOSKEY_BUF_LEN        64      /* max size of USB full speed packet */
 
 #define NAK_TIMEOUT (HZ)                /* stall/wait timeout for device */
@@ -69,6 +72,7 @@ MODULE_LICENSE("GPL");
 
 static const struct usb_device_id chaoskey_table[] = {
         { USB_DEVICE(CHAOSKEY_VENDOR_ID, CHAOSKEY_PRODUCT_ID) },
+        { USB_DEVICE(ALEA_VENDOR_ID, ALEA_PRODUCT_ID) },
         { },
 };
 MODULE_DEVICE_TABLE(usb, chaoskey_table);