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 /* Atheros AR9285 Malbec with sflash firmware */ 43 { USB_DEVICE(0x03F0, 0x311D) }, 44 45 /* Atheros AR5BBU12 with sflash firmware */ 46 { USB_DEVICE(0x0489, 0xE02C) }, 47 { } /* Terminating entry */ 48 }; 49 50 MODULE_DEVICE_TABLE(usb, ath3k_table); 51 52 #define USB_REQ_DFU_DNLOAD 1 53 #define BULK_SIZE 4096 54 55 static int ath3k_load_firmware(struct usb_device *udev, 56 const struct firmware *firmware) 57 { 58 u8 *send_buf; 59 int err, pipe, len, size, sent = 0; 60 int count = firmware->size; 61 62 BT_DBG("udev %p", udev); 63 64 pipe = usb_sndctrlpipe(udev, 0); 65 66 send_buf = kmalloc(BULK_SIZE, GFP_ATOMIC); 67 if (!send_buf) { 68 BT_ERR("Can't allocate memory chunk for firmware"); 69 return -ENOMEM; 70 } 71 72 memcpy(send_buf, firmware->data, 20); 73 if ((err = usb_control_msg(udev, pipe, 74 USB_REQ_DFU_DNLOAD, 75 USB_TYPE_VENDOR, 0, 0, 76 send_buf, 20, USB_CTRL_SET_TIMEOUT)) < 0) { 77 BT_ERR("Can't change to loading configuration err"); 78 goto error; 79 } 80 sent += 20; 81 count -= 20; 82 83 while (count) { 84 size = min_t(uint, count, BULK_SIZE); 85 pipe = usb_sndbulkpipe(udev, 0x02); 86 memcpy(send_buf, firmware->data + sent, size); 87 88 err = usb_bulk_msg(udev, pipe, send_buf, size, 89 &len, 3000); 90 91 if (err || (len != size)) { 92 BT_ERR("Error in firmware loading err = %d," 93 "len = %d, size = %d", err, len, size); 94 goto error; 95 } 96 97 sent += size; 98 count -= size; 99 } 100 101 kfree(send_buf); 102 return 0; 103 104 error: 105 kfree(send_buf); 106 return err; 107 } 108 109 static int ath3k_probe(struct usb_interface *intf, 110 const struct usb_device_id *id) 111 { 112 const struct firmware *firmware; 113 struct usb_device *udev = interface_to_usbdev(intf); 114 115 BT_DBG("intf %p id %p", intf, id); 116 117 if (intf->cur_altsetting->desc.bInterfaceNumber != 0) 118 return -ENODEV; 119 120 if (request_firmware(&firmware, "ath3k-1.fw", &udev->dev) < 0) { 121 return -EIO; 122 } 123 124 if (ath3k_load_firmware(udev, firmware)) { 125 release_firmware(firmware); 126 return -EIO; 127 } 128 release_firmware(firmware); 129 130 return 0; 131 } 132 133 static void ath3k_disconnect(struct usb_interface *intf) 134 { 135 BT_DBG("ath3k_disconnect intf %p", intf); 136 } 137 138 static struct usb_driver ath3k_driver = { 139 .name = "ath3k", 140 .probe = ath3k_probe, 141 .disconnect = ath3k_disconnect, 142 .id_table = ath3k_table, 143 }; 144 145 static int __init ath3k_init(void) 146 { 147 BT_INFO("Atheros AR30xx firmware driver ver %s", VERSION); 148 return usb_register(&ath3k_driver); 149 } 150 151 static void __exit ath3k_exit(void) 152 { 153 usb_deregister(&ath3k_driver); 154 } 155 156 module_init(ath3k_init); 157 module_exit(ath3k_exit); 158 159 MODULE_AUTHOR("Atheros Communications"); 160 MODULE_DESCRIPTION("Atheros AR30xx firmware driver"); 161 MODULE_VERSION(VERSION); 162 MODULE_LICENSE("GPL"); 163 MODULE_FIRMWARE("ath3k-1.fw"); 164