@@ -23,6 +23,8 @@
#include <linux/module.h>
#include <linux/usb.h>
+#include <linux/delay.h>
+#include <linux/firmware.h>
#include <net/bluetooth/bluetooth.h>
#include <net/bluetooth/hci_core.h>
@@ -47,6 +49,7 @@ static struct usb_driver btusb_driver;
#define BTUSB_BROKEN_ISOC 0x20
#define BTUSB_WRONG_SCO_MTU 0x40
#define BTUSB_ATH3012 0x80
+#define BTUSB_BCM_PATCHRAM 0x100
static struct usb_device_id btusb_table[] = {
/* Generic Bluetooth USB device */
@@ -99,13 +102,13 @@ static struct usb_device_id btusb_table[] = {
{ USB_DEVICE(0x0b05, 0x17b5) },
{ USB_DEVICE(0x04ca, 0x2003) },
{ USB_DEVICE(0x0489, 0xe042) },
- { USB_DEVICE(0x413c, 0x8197) },
+ { USB_DEVICE(0x413c, 0x8197), .driver_info = BTUSB_BCM_PATCHRAM },
/* Foxconn - Hon Hai */
- { USB_VENDOR_AND_INTERFACE_INFO(0x0489, 0xff, 0x01, 0x01) },
+ { USB_VENDOR_AND_INTERFACE_INFO(0x0489, 0xff, 0x01, 0x01), .driver_info = BTUSB_BCM_PATCHRAM },
/*Broadcom devices with vendor specific id */
- { USB_VENDOR_AND_INTERFACE_INFO(0x0a5c, 0xff, 0x01, 0x01) },
+ { USB_VENDOR_AND_INTERFACE_INFO(0x0a5c, 0xff, 0x01, 0x01), .driver_info = BTUSB_BCM_PATCHRAM },
{ } /* Terminating entry */
};
@@ -212,12 +215,14 @@ static struct usb_device_id blacklist_table[] = {
#define BTUSB_ISOC_RUNNING 2
#define BTUSB_SUSPENDING 3
#define BTUSB_DID_ISO_RESUME 4
+#define BTUSB_FIRMWARE_DONE 5
struct btusb_data {
struct hci_dev *hdev;
struct usb_device *udev;
struct usb_interface *intf;
struct usb_interface *isoc;
+ const struct usb_device_id *id;
spinlock_t lock;
@@ -922,6 +927,72 @@ static void btusb_waker(struct work_struct *work)
usb_autopm_put_interface(data->intf);
}
+#define PATCHRAM_TIMEOUT 1000
+#define PATCHRAM_NAME_LEN 20
+
+static void btusb_load_firmware(struct hci_dev *hdev)
+{
+ struct btusb_data *data = hci_get_drvdata(hdev);
+ struct usb_device *udev = data->udev;
+ const struct usb_device_id *id = data->id;
+ size_t pos = 0;
+ int err = 0;
+ char filename[PATCHRAM_NAME_LEN];
+ const struct firmware *fw;
+
+ unsigned char reset_cmd[] = { 0x03, 0x0c, 0x00 };
+ unsigned char download_cmd[] = { 0x2e, 0xfc, 0x00 };
+
+ if (!(id->driver_info & BTUSB_BCM_PATCHRAM))
+ return;
+ if (test_and_set_bit(BTUSB_FIRMWARE_DONE, &data->flags))
+ return;
+
+ snprintf(filename, PATCHRAM_NAME_LEN, "fw-%04x_%04x.hcd",
+ le16_to_cpu(udev->descriptor.idVendor),
+ le16_to_cpu(udev->descriptor.idProduct));
+ if (request_firmware(&fw, (const char *) filename, &udev->dev) < 0) {
+ BT_INFO("can't load firmware, may not work correctly");
+ return;
+ }
+
+ if (usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0, USB_TYPE_CLASS, 0, 0,
+ reset_cmd, sizeof(reset_cmd), PATCHRAM_TIMEOUT) < 0) {
+ err = -1;
+ goto out;
+ }
+ msleep(300);
+
+ if (usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0, USB_TYPE_CLASS, 0, 0,
+ download_cmd, sizeof(download_cmd), PATCHRAM_TIMEOUT) < 0) {
+ err = -1;
+ goto out;
+ }
+ msleep(300);
+
+ while (pos < fw->size) {
+ size_t len;
+ len = fw->data[pos + 2] + 3;
+ if ((pos + len > fw->size) ||
+ (usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0,
+ USB_TYPE_CLASS, 0, 0, (void *)fw->data + pos, len,
+ PATCHRAM_TIMEOUT) < 0)) {
+ err = -1;
+ goto out;
+ }
+ pos += len;
+ }
+
+ err = (usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0, USB_TYPE_CLASS, 0, 0,
+ reset_cmd, sizeof(reset_cmd), PATCHRAM_TIMEOUT) < 0);
+out:
+ if (err)
+ BT_INFO("fail to load firmware, may not work correctly");
+ else
+ BT_INFO("firmware loaded");
+ release_firmware(fw);
+}
+
static int btusb_probe(struct usb_interface *intf,
const struct usb_device_id *id)
{
@@ -1007,6 +1078,8 @@ static int btusb_probe(struct usb_interface *intf,
init_usb_anchor(&data->isoc_anchor);
init_usb_anchor(&data->deferred);
+ data->id = id;
+
hdev = hci_alloc_dev();
if (!hdev)
return -ENOMEM;
@@ -1023,6 +1096,7 @@ static int btusb_probe(struct usb_interface *intf,
hdev->flush = btusb_flush;
hdev->send = btusb_send_frame;
hdev->notify = btusb_notify;
+ hdev->load_firmware = btusb_load_firmware;
/* Interface numbers are hardcoded in the specification */
data->isoc = usb_ifnum_to_if(data->udev, 1);