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