1 /* 2 * Copyright (c) 2008-2009 Atheros Communications Inc. 3 * 4 * This program is free software; you can redistribute it and/or modify 5 * it under the terms of the GNU General Public License as published by 6 * the Free Software Foundation; either version 2 of the License, or 7 * (at your option) any later version. 8 * 9 * This program is distributed in the hope that it will be useful, 10 * but WITHOUT ANY WARRANTY; without even the implied warranty of 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 12 * GNU General Public License for more details. 13 * 14 * You should have received a copy of the GNU General Public License 15 * along with this program; if not, write to the Free Software 16 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 17 * 18 */ 19 20 21 #include <linux/module.h> 22 #include <linux/kernel.h> 23 #include <linux/init.h> 24 #include <linux/slab.h> 25 #include <linux/types.h> 26 #include <linux/errno.h> 27 #include <linux/device.h> 28 #include <linux/firmware.h> 29 #include <linux/usb.h> 30 #include <net/bluetooth/bluetooth.h> 31 32 #define VERSION "1.0" 33 34 35 static struct usb_device_id ath3k_table[] = { 36 /* Atheros AR3011 */ 37 { USB_DEVICE(0x0CF3, 0x3000) }, 38 39 /* Atheros AR3011 with sflash firmware*/ 40 { USB_DEVICE(0x0CF3, 0x3002) }, 41 42 { } /* Terminating entry */ 43 }; 44 45 MODULE_DEVICE_TABLE(usb, ath3k_table); 46 47 #define USB_REQ_DFU_DNLOAD 1 48 #define BULK_SIZE 4096 49 50 static int ath3k_load_firmware(struct usb_device *udev, 51 const struct firmware *firmware) 52 { 53 u8 *send_buf; 54 int err, pipe, len, size, sent = 0; 55 int count = firmware->size; 56 57 BT_DBG("udev %p", udev); 58 59 pipe = usb_sndctrlpipe(udev, 0); 60 61 send_buf = kmalloc(BULK_SIZE, GFP_ATOMIC); 62 if (!send_buf) { 63 BT_ERR("Can't allocate memory chunk for firmware"); 64 return -ENOMEM; 65 } 66 67 memcpy(send_buf, firmware->data, 20); 68 if ((err = usb_control_msg(udev, pipe, 69 USB_REQ_DFU_DNLOAD, 70 USB_TYPE_VENDOR, 0, 0, 71 send_buf, 20, USB_CTRL_SET_TIMEOUT)) < 0) { 72 BT_ERR("Can't change to loading configuration err"); 73 goto error; 74 } 75 sent += 20; 76 count -= 20; 77 78 while (count) { 79 size = min_t(uint, count, BULK_SIZE); 80 pipe = usb_sndbulkpipe(udev, 0x02); 81 memcpy(send_buf, firmware->data + sent, size); 82 83 err = usb_bulk_msg(udev, pipe, send_buf, size, 84 &len, 3000); 85 86 if (err || (len != size)) { 87 BT_ERR("Error in firmware loading err = %d," 88 "len = %d, size = %d", err, len, size); 89 goto error; 90 } 91 92 sent += size; 93 count -= size; 94 } 95 96 kfree(send_buf); 97 return 0; 98 99 error: 100 kfree(send_buf); 101 return err; 102 } 103 104 static int ath3k_probe(struct usb_interface *intf, 105 const struct usb_device_id *id) 106 { 107 const struct firmware *firmware; 108 struct usb_device *udev = interface_to_usbdev(intf); 109 110 BT_DBG("intf %p id %p", intf, id); 111 112 if (intf->cur_altsetting->desc.bInterfaceNumber != 0) 113 return -ENODEV; 114 115 if (request_firmware(&firmware, "ath3k-1.fw", &udev->dev) < 0) { 116 return -EIO; 117 } 118 119 if (ath3k_load_firmware(udev, firmware)) { 120 release_firmware(firmware); 121 return -EIO; 122 } 123 release_firmware(firmware); 124 125 return 0; 126 } 127 128 static void ath3k_disconnect(struct usb_interface *intf) 129 { 130 BT_DBG("ath3k_disconnect intf %p", intf); 131 } 132 133 static struct usb_driver ath3k_driver = { 134 .name = "ath3k", 135 .probe = ath3k_probe, 136 .disconnect = ath3k_disconnect, 137 .id_table = ath3k_table, 138 }; 139 140 static int __init ath3k_init(void) 141 { 142 BT_INFO("Atheros AR30xx firmware driver ver %s", VERSION); 143 return usb_register(&ath3k_driver); 144 } 145 146 static void __exit ath3k_exit(void) 147 { 148 usb_deregister(&ath3k_driver); 149 } 150 151 module_init(ath3k_init); 152 module_exit(ath3k_exit); 153 154 MODULE_AUTHOR("Atheros Communications"); 155 MODULE_DESCRIPTION("Atheros AR30xx firmware driver"); 156 MODULE_VERSION(VERSION); 157 MODULE_LICENSE("GPL"); 158 MODULE_FIRMWARE("ath3k-1.fw"); 159