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/*
* Copyright (c) 2008-2009 Atheros Communications Inc.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/slab.h>
#include <linux/types.h>
#include <linux/errno.h>
#include <linux/device.h>
#include <linux/firmware.h>
#include <linux/usb.h>
#include <net/bluetooth/bluetooth.h>
#define VERSION "1.0"
static struct usb_device_id ath3k_table[] = {
/* Atheros AR3011 */
{ USB_DEVICE(0x0CF3, 0x3000) },
/* Atheros AR3011 with sflash firmware*/
{ USB_DEVICE(0x0CF3, 0x3002) },
{ } /* Terminating entry */
};
MODULE_DEVICE_TABLE(usb, ath3k_table);
#define USB_REQ_DFU_DNLOAD 1
#define BULK_SIZE 4096
struct ath3k_data {
struct usb_device *udev;
u8 *fw_data;
u32 fw_size;
u32 fw_sent;
};
static int ath3k_load_firmware(struct ath3k_data *data,
unsigned char *firmware,
int count)
{
u8 *send_buf;
int err, pipe, len, size, sent = 0;
BT_DBG("ath3k %p udev %p", data, data->udev);
pipe = usb_sndctrlpipe(data->udev, 0);
if ((usb_control_msg(data->udev, pipe,
USB_REQ_DFU_DNLOAD,
USB_TYPE_VENDOR, 0, 0,
firmware, 20, USB_CTRL_SET_TIMEOUT)) < 0) {
BT_ERR("Can't change to loading configuration err");
return -EBUSY;
}
sent += 20;
count -= 20;
send_buf = kmalloc(BULK_SIZE, GFP_ATOMIC);
if (!send_buf) {
BT_ERR("Can't allocate memory chunk for firmware");
return -ENOMEM;
}
while (count) {
size = min_t(uint, count, BULK_SIZE);
pipe = usb_sndbulkpipe(data->udev, 0x02);
memcpy(send_buf, firmware + sent, size);
err = usb_bulk_msg(data->udev, pipe, send_buf, size,
&len, 3000);
if (err || (len != size)) {
BT_ERR("Error in firmware loading err = %d,"
"len = %d, size = %d", err, len, size);
goto error;
}
sent += size;
count -= size;
}
kfree(send_buf);
return 0;
error:
kfree(send_buf);
return err;
}
static int ath3k_probe(struct usb_interface *intf,
const struct usb_device_id *id)
{
const struct firmware *firmware;
struct usb_device *udev = interface_to_usbdev(intf);
struct ath3k_data *data;
int size;
BT_DBG("intf %p id %p", intf, id);
if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
return -ENODEV;
data = kzalloc(sizeof(*data), GFP_KERNEL);
if (!data)
return -ENOMEM;
data->udev = udev;
if (request_firmware(&firmware, "ath3k-1.fw", &udev->dev) < 0) {
kfree(data);
return -EIO;
}
size = max_t(uint, firmware->size, 4096);
data->fw_data = kmalloc(size, GFP_KERNEL);
if (!data->fw_data) {
release_firmware(firmware);
kfree(data);
return -ENOMEM;
}
memcpy(data->fw_data, firmware->data, firmware->size);
data->fw_size = firmware->size;
data->fw_sent = 0;
release_firmware(firmware);
usb_set_intfdata(intf, data);
if (ath3k_load_firmware(data, data->fw_data, data->fw_size)) {
usb_set_intfdata(intf, NULL);
kfree(data->fw_data);
kfree(data);
return -EIO;
}
return 0;
}
static void ath3k_disconnect(struct usb_interface *intf)
{
struct ath3k_data *data = usb_get_intfdata(intf);
BT_DBG("ath3k_disconnect intf %p", intf);
kfree(data->fw_data);
kfree(data);
}
static struct usb_driver ath3k_driver = {
.name = "ath3k",
.probe = ath3k_probe,
.disconnect = ath3k_disconnect,
.id_table = ath3k_table,
};
static int __init ath3k_init(void)
{
BT_INFO("Atheros AR30xx firmware driver ver %s", VERSION);
return usb_register(&ath3k_driver);
}
static void __exit ath3k_exit(void)
{
usb_deregister(&ath3k_driver);
}
module_init(ath3k_init);
module_exit(ath3k_exit);
MODULE_AUTHOR("Atheros Communications");
MODULE_DESCRIPTION("Atheros AR30xx firmware driver");
MODULE_VERSION(VERSION);
MODULE_LICENSE("GPL");
MODULE_FIRMWARE("ath3k-1.fw");
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