ar9170: add AVM FRITZ devices

This adds:

USB 0x057C:0x8401       AVM FRITZ!WLAN USB Stick N
USB 0x057C:0x8402       AVM FRITZ!WLAN USB Stick N 2.4

These devices require the 1-stage firmware, if not present we
don't continue.

Cc: Peter Grabienski <Peter.Grabienski@Atheros.com>
Cc: Stephen Chen <Stephen.Chen@Atheros.com>
Cc: Michael Fortin <Michael.Fortin@Atheros.com>
Cc: Johnny Cheng <Johnny.Cheng@Atheros.com>
Cc: Yuan-Gu Wei <Yuan-Gu.Wei@atheros.com>
Cc: Joerg Albert <jal2@gmx.de>
Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

2 files changed, 27 insertions, 0 deletions

diff --git a/drivers/net/wireless/ath/ar9170/usb.c b/drivers/net/wireless/ath/ar9170/usb.c
index 3c97c0985e2a..71579e4d2fce 100644
--- a/drivers/net/wireless/ath/ar9170/usb.c
+++ b/drivers/net/wireless/ath/ar9170/usb.c
@@ -55,6 +55,10 @@ MODULE_FIRMWARE("ar9170.fw");
 MODULE_FIRMWARE("ar9170-1.fw");
 MODULE_FIRMWARE("ar9170-2.fw");
 
+enum ar9170_requirements {
+        AR9170_REQ_FW1_ONLY = 1,
+};
+
 static struct usb_device_id ar9170_usb_ids[] = {
         /* Atheros 9170 */
         { USB_DEVICE(0x0cf3, 0x9170) },
@@ -82,6 +86,10 @@ static struct usb_device_id ar9170_usb_ids[] = {
         { USB_DEVICE(0x2019, 0x5304) },
         /* IO-Data WNGDNUS2 */
         { USB_DEVICE(0x04bb, 0x093f) },
+        /* AVM FRITZ!WLAN USB Stick N */
+        { USB_DEVICE(0x057C, 0x8401) },
+        /* AVM FRITZ!WLAN USB Stick N 2.4 */
+        { USB_DEVICE(0x057C, 0x8402), .driver_info = AR9170_REQ_FW1_ONLY },
 
         /* terminate */
         {}
@@ -512,6 +520,12 @@ static int ar9170_usb_request_firmware(struct ar9170_usb *aru)
                 return 0;
         }
 
+        if (aru->req_one_stage_fw) {
+                dev_err(&aru->udev->dev, "ar9170.fw firmware file "
+                        "not found and is required for this device\n");
+                return -EINVAL;
+        }
+
         dev_err(&aru->udev->dev, "ar9170.fw firmware file "
                 "not found, trying old firmware...\n");
 
@@ -668,6 +682,15 @@ err_out:
         return err;
 }
 
+static bool ar9170_requires_one_stage(const struct usb_device_id *id)
+{
+        if (!id->driver_info)
+                return false;
+        if (id->driver_info == AR9170_REQ_FW1_ONLY)
+                return true;
+        return false;
+}
+
 static int ar9170_usb_probe(struct usb_interface *intf,
                         const struct usb_device_id *id)
 {
@@ -688,6 +711,8 @@ static int ar9170_usb_probe(struct usb_interface *intf,
         aru->intf = intf;
         ar = &aru->common;
 
+        aru->req_one_stage_fw = ar9170_requires_one_stage(id);
+
         usb_set_intfdata(intf, aru);
         SET_IEEE80211_DEV(ar->hw, &udev->dev);
 
diff --git a/drivers/net/wireless/ath/ar9170/usb.h b/drivers/net/wireless/ath/ar9170/usb.h
index ac42586495d8..69f4bceb0af3 100644
--- a/drivers/net/wireless/ath/ar9170/usb.h
+++ b/drivers/net/wireless/ath/ar9170/usb.h
@@ -62,6 +62,8 @@ struct ar9170_usb {
         struct usb_anchor rx_submitted;
         struct usb_anchor tx_submitted;
 
+        bool req_one_stage_fw;
+
         spinlock_t cmdlock;
         struct completion cmd_wait;
         int readlen;