Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2 | * |
Marcel Holtmann | 0372a66 | 2005-10-28 19:20:45 +0200 | [diff] [blame] | 3 | * Bluetooth HCI UART driver |
| 4 | * |
| 5 | * Copyright (C) 2000-2001 Qualcomm Incorporated |
| 6 | * Copyright (C) 2002-2003 Maxim Krasnyansky <maxk@qualcomm.com> |
| 7 | * Copyright (C) 2004-2005 Marcel Holtmann <marcel@holtmann.org> |
| 8 | * |
| 9 | * |
| 10 | * This program is free software; you can redistribute it and/or modify |
| 11 | * it under the terms of the GNU General Public License as published by |
| 12 | * the Free Software Foundation; either version 2 of the License, or |
| 13 | * (at your option) any later version. |
| 14 | * |
| 15 | * This program is distributed in the hope that it will be useful, |
| 16 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 18 | * GNU General Public License for more details. |
| 19 | * |
| 20 | * You should have received a copy of the GNU General Public License |
| 21 | * along with this program; if not, write to the Free Software |
| 22 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 23 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 24 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 25 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 26 | #include <linux/module.h> |
| 27 | |
| 28 | #include <linux/kernel.h> |
| 29 | #include <linux/init.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 30 | #include <linux/types.h> |
| 31 | #include <linux/fcntl.h> |
| 32 | #include <linux/interrupt.h> |
| 33 | #include <linux/ptrace.h> |
| 34 | #include <linux/poll.h> |
| 35 | |
| 36 | #include <linux/slab.h> |
| 37 | #include <linux/tty.h> |
| 38 | #include <linux/errno.h> |
| 39 | #include <linux/string.h> |
| 40 | #include <linux/signal.h> |
| 41 | #include <linux/ioctl.h> |
| 42 | #include <linux/skbuff.h> |
| 43 | |
| 44 | #include <net/bluetooth/bluetooth.h> |
| 45 | #include <net/bluetooth/hci_core.h> |
| 46 | |
| 47 | #include "hci_uart.h" |
| 48 | |
Marcel Holtmann | 0372a66 | 2005-10-28 19:20:45 +0200 | [diff] [blame] | 49 | #define VERSION "2.2" |
| 50 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 51 | static struct hci_uart_proto *hup[HCI_UART_MAX_PROTO]; |
| 52 | |
| 53 | int hci_uart_register_proto(struct hci_uart_proto *p) |
| 54 | { |
| 55 | if (p->id >= HCI_UART_MAX_PROTO) |
| 56 | return -EINVAL; |
| 57 | |
| 58 | if (hup[p->id]) |
| 59 | return -EEXIST; |
| 60 | |
| 61 | hup[p->id] = p; |
Marcel Holtmann | 0372a66 | 2005-10-28 19:20:45 +0200 | [diff] [blame] | 62 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 63 | return 0; |
| 64 | } |
| 65 | |
| 66 | int hci_uart_unregister_proto(struct hci_uart_proto *p) |
| 67 | { |
| 68 | if (p->id >= HCI_UART_MAX_PROTO) |
| 69 | return -EINVAL; |
| 70 | |
| 71 | if (!hup[p->id]) |
| 72 | return -EINVAL; |
| 73 | |
| 74 | hup[p->id] = NULL; |
Marcel Holtmann | 0372a66 | 2005-10-28 19:20:45 +0200 | [diff] [blame] | 75 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 76 | return 0; |
| 77 | } |
| 78 | |
| 79 | static struct hci_uart_proto *hci_uart_get_proto(unsigned int id) |
| 80 | { |
| 81 | if (id >= HCI_UART_MAX_PROTO) |
| 82 | return NULL; |
Marcel Holtmann | 0372a66 | 2005-10-28 19:20:45 +0200 | [diff] [blame] | 83 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 84 | return hup[id]; |
| 85 | } |
| 86 | |
| 87 | static inline void hci_uart_tx_complete(struct hci_uart *hu, int pkt_type) |
| 88 | { |
| 89 | struct hci_dev *hdev = hu->hdev; |
Marcel Holtmann | 0372a66 | 2005-10-28 19:20:45 +0200 | [diff] [blame] | 90 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 91 | /* Update HCI stat counters */ |
| 92 | switch (pkt_type) { |
| 93 | case HCI_COMMAND_PKT: |
| 94 | hdev->stat.cmd_tx++; |
| 95 | break; |
| 96 | |
| 97 | case HCI_ACLDATA_PKT: |
| 98 | hdev->stat.acl_tx++; |
| 99 | break; |
| 100 | |
| 101 | case HCI_SCODATA_PKT: |
Karl Beldan | 7f8f272 | 2010-10-07 21:57:10 +0200 | [diff] [blame] | 102 | hdev->stat.sco_tx++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 103 | break; |
| 104 | } |
| 105 | } |
| 106 | |
| 107 | static inline struct sk_buff *hci_uart_dequeue(struct hci_uart *hu) |
| 108 | { |
| 109 | struct sk_buff *skb = hu->tx_skb; |
Marcel Holtmann | 0372a66 | 2005-10-28 19:20:45 +0200 | [diff] [blame] | 110 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 111 | if (!skb) |
| 112 | skb = hu->proto->dequeue(hu); |
| 113 | else |
| 114 | hu->tx_skb = NULL; |
Marcel Holtmann | 0372a66 | 2005-10-28 19:20:45 +0200 | [diff] [blame] | 115 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 116 | return skb; |
| 117 | } |
| 118 | |
| 119 | int hci_uart_tx_wakeup(struct hci_uart *hu) |
| 120 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 121 | if (test_and_set_bit(HCI_UART_SENDING, &hu->tx_state)) { |
| 122 | set_bit(HCI_UART_TX_WAKEUP, &hu->tx_state); |
| 123 | return 0; |
| 124 | } |
| 125 | |
| 126 | BT_DBG(""); |
| 127 | |
Felipe Balbi | da64c27 | 2014-04-23 09:58:26 -0500 | [diff] [blame] | 128 | schedule_work(&hu->write_work); |
| 129 | |
| 130 | return 0; |
| 131 | } |
| 132 | |
| 133 | static void hci_uart_write_work(struct work_struct *work) |
| 134 | { |
| 135 | struct hci_uart *hu = container_of(work, struct hci_uart, write_work); |
| 136 | struct tty_struct *tty = hu->tty; |
| 137 | struct hci_dev *hdev = hu->hdev; |
| 138 | struct sk_buff *skb; |
| 139 | |
| 140 | /* REVISIT: should we cope with bad skbs or ->write() returning |
| 141 | * and error value ? |
| 142 | */ |
| 143 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 144 | restart: |
| 145 | clear_bit(HCI_UART_TX_WAKEUP, &hu->tx_state); |
| 146 | |
| 147 | while ((skb = hci_uart_dequeue(hu))) { |
| 148 | int len; |
Marcel Holtmann | 0372a66 | 2005-10-28 19:20:45 +0200 | [diff] [blame] | 149 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 150 | set_bit(TTY_DO_WRITE_WAKEUP, &tty->flags); |
Alan Cox | f34d7a5 | 2008-04-30 00:54:13 -0700 | [diff] [blame] | 151 | len = tty->ops->write(tty, skb->data, skb->len); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 152 | hdev->stat.byte_tx += len; |
| 153 | |
| 154 | skb_pull(skb, len); |
| 155 | if (skb->len) { |
| 156 | hu->tx_skb = skb; |
| 157 | break; |
| 158 | } |
Marcel Holtmann | 0372a66 | 2005-10-28 19:20:45 +0200 | [diff] [blame] | 159 | |
Marcel Holtmann | 0d48d93 | 2005-08-09 20:30:28 -0700 | [diff] [blame] | 160 | hci_uart_tx_complete(hu, bt_cb(skb)->pkt_type); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 161 | kfree_skb(skb); |
Marcel Holtmann | 0372a66 | 2005-10-28 19:20:45 +0200 | [diff] [blame] | 162 | } |
| 163 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 164 | if (test_bit(HCI_UART_TX_WAKEUP, &hu->tx_state)) |
| 165 | goto restart; |
| 166 | |
| 167 | clear_bit(HCI_UART_SENDING, &hu->tx_state); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 168 | } |
| 169 | |
Johan Hedberg | 9f2aee8 | 2012-07-16 16:12:11 +0300 | [diff] [blame] | 170 | static void hci_uart_init_work(struct work_struct *work) |
| 171 | { |
| 172 | struct hci_uart *hu = container_of(work, struct hci_uart, init_ready); |
| 173 | int err; |
| 174 | |
| 175 | if (!test_and_clear_bit(HCI_UART_INIT_PENDING, &hu->hdev_flags)) |
| 176 | return; |
| 177 | |
| 178 | err = hci_register_dev(hu->hdev); |
| 179 | if (err < 0) { |
| 180 | BT_ERR("Can't register HCI device"); |
| 181 | hci_free_dev(hu->hdev); |
| 182 | hu->hdev = NULL; |
| 183 | hu->proto->close(hu); |
| 184 | } |
| 185 | |
| 186 | set_bit(HCI_UART_REGISTERED, &hu->flags); |
| 187 | } |
| 188 | |
| 189 | int hci_uart_init_ready(struct hci_uart *hu) |
| 190 | { |
| 191 | if (!test_bit(HCI_UART_INIT_PENDING, &hu->hdev_flags)) |
| 192 | return -EALREADY; |
| 193 | |
| 194 | schedule_work(&hu->init_ready); |
| 195 | |
| 196 | return 0; |
| 197 | } |
| 198 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 199 | /* ------- Interface to HCI layer ------ */ |
| 200 | /* Initialize device */ |
| 201 | static int hci_uart_open(struct hci_dev *hdev) |
| 202 | { |
| 203 | BT_DBG("%s %p", hdev->name, hdev); |
| 204 | |
| 205 | /* Nothing to do for UART driver */ |
| 206 | |
| 207 | set_bit(HCI_RUNNING, &hdev->flags); |
Marcel Holtmann | 0372a66 | 2005-10-28 19:20:45 +0200 | [diff] [blame] | 208 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 209 | return 0; |
| 210 | } |
| 211 | |
| 212 | /* Reset device */ |
| 213 | static int hci_uart_flush(struct hci_dev *hdev) |
| 214 | { |
David Herrmann | 155961e | 2012-02-09 21:58:32 +0100 | [diff] [blame] | 215 | struct hci_uart *hu = hci_get_drvdata(hdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 216 | struct tty_struct *tty = hu->tty; |
| 217 | |
| 218 | BT_DBG("hdev %p tty %p", hdev, tty); |
| 219 | |
| 220 | if (hu->tx_skb) { |
| 221 | kfree_skb(hu->tx_skb); hu->tx_skb = NULL; |
| 222 | } |
| 223 | |
| 224 | /* Flush any pending characters in the driver and discipline. */ |
| 225 | tty_ldisc_flush(tty); |
Alan Cox | f34d7a5 | 2008-04-30 00:54:13 -0700 | [diff] [blame] | 226 | tty_driver_flush_buffer(tty); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 227 | |
| 228 | if (test_bit(HCI_UART_PROTO_SET, &hu->flags)) |
| 229 | hu->proto->flush(hu); |
| 230 | |
| 231 | return 0; |
| 232 | } |
| 233 | |
| 234 | /* Close device */ |
| 235 | static int hci_uart_close(struct hci_dev *hdev) |
| 236 | { |
| 237 | BT_DBG("hdev %p", hdev); |
| 238 | |
| 239 | if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags)) |
| 240 | return 0; |
| 241 | |
| 242 | hci_uart_flush(hdev); |
David Newall | 3611f4d | 2008-02-11 21:41:30 -0800 | [diff] [blame] | 243 | hdev->flush = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 244 | return 0; |
| 245 | } |
| 246 | |
| 247 | /* Send frames from HCI layer */ |
Marcel Holtmann | 7bd8f09 | 2013-10-11 06:19:18 -0700 | [diff] [blame] | 248 | static int hci_uart_send_frame(struct hci_dev *hdev, struct sk_buff *skb) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 249 | { |
Marcel Holtmann | 52bc423 | 2013-10-11 07:01:03 -0700 | [diff] [blame] | 250 | struct hci_uart *hu = hci_get_drvdata(hdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 251 | |
| 252 | if (!test_bit(HCI_RUNNING, &hdev->flags)) |
| 253 | return -EBUSY; |
| 254 | |
Marcel Holtmann | 0d48d93 | 2005-08-09 20:30:28 -0700 | [diff] [blame] | 255 | BT_DBG("%s: type %d len %d", hdev->name, bt_cb(skb)->pkt_type, skb->len); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 256 | |
| 257 | hu->proto->enqueue(hu, skb); |
| 258 | |
| 259 | hci_uart_tx_wakeup(hu); |
Marcel Holtmann | 0372a66 | 2005-10-28 19:20:45 +0200 | [diff] [blame] | 260 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 261 | return 0; |
| 262 | } |
| 263 | |
Loic Poulain | eb17380 | 2015-03-25 15:19:30 +0100 | [diff] [blame] | 264 | static int hci_uart_setup(struct hci_dev *hdev) |
| 265 | { |
| 266 | struct hci_uart *hu = hci_get_drvdata(hdev); |
Marcel Holtmann | fb2ce8d | 2015-04-04 16:13:01 -0700 | [diff] [blame] | 267 | struct hci_rp_read_local_version *ver; |
| 268 | struct sk_buff *skb; |
Loic Poulain | eb17380 | 2015-03-25 15:19:30 +0100 | [diff] [blame] | 269 | |
| 270 | if (hu->proto->setup) |
| 271 | return hu->proto->setup(hu); |
| 272 | |
Marcel Holtmann | fb2ce8d | 2015-04-04 16:13:01 -0700 | [diff] [blame] | 273 | if (!test_bit(HCI_UART_VND_DETECT, &hu->hdev_flags)) |
| 274 | return 0; |
| 275 | |
| 276 | skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL, |
| 277 | HCI_INIT_TIMEOUT); |
| 278 | if (IS_ERR(skb)) { |
| 279 | BT_ERR("%s: Reading local version information failed (%ld)", |
| 280 | hdev->name, PTR_ERR(skb)); |
| 281 | return 0; |
| 282 | } |
| 283 | |
| 284 | if (skb->len != sizeof(*ver)) { |
| 285 | BT_ERR("%s: Event length mismatch for version information", |
| 286 | hdev->name); |
| 287 | goto done; |
| 288 | } |
| 289 | |
| 290 | ver = (struct hci_rp_read_local_version *)skb->data; |
| 291 | |
| 292 | switch (le16_to_cpu(ver->manufacturer)) { |
Marcel Holtmann | 16e3887 | 2015-04-04 16:13:02 -0700 | [diff] [blame] | 293 | #ifdef CONFIG_BT_HCIUART_INTEL |
| 294 | case 2: |
| 295 | hdev->set_bdaddr = intel_set_bdaddr; |
| 296 | break; |
| 297 | #endif |
Marcel Holtmann | e9a2dd2 | 2015-04-04 16:13:03 -0700 | [diff] [blame] | 298 | #ifdef CONFIG_BT_HCIUART_BCM |
| 299 | case 15: |
| 300 | hdev->set_bdaddr = bcm_set_bdaddr; |
| 301 | break; |
| 302 | #endif |
Marcel Holtmann | fb2ce8d | 2015-04-04 16:13:01 -0700 | [diff] [blame] | 303 | } |
| 304 | |
| 305 | done: |
| 306 | kfree_skb(skb); |
Loic Poulain | eb17380 | 2015-03-25 15:19:30 +0100 | [diff] [blame] | 307 | return 0; |
| 308 | } |
| 309 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 310 | /* ------ LDISC part ------ */ |
| 311 | /* hci_uart_tty_open |
Chan-yeol Park | 1687dfc | 2013-04-02 21:24:23 +0900 | [diff] [blame] | 312 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 313 | * Called when line discipline changed to HCI_UART. |
| 314 | * |
| 315 | * Arguments: |
| 316 | * tty pointer to tty info structure |
Chan-yeol Park | 1687dfc | 2013-04-02 21:24:23 +0900 | [diff] [blame] | 317 | * Return Value: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 318 | * 0 if success, otherwise error code |
| 319 | */ |
| 320 | static int hci_uart_tty_open(struct tty_struct *tty) |
| 321 | { |
Jiri Slaby | f327b34 | 2012-10-18 22:26:34 +0200 | [diff] [blame] | 322 | struct hci_uart *hu; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 323 | |
| 324 | BT_DBG("tty %p", tty); |
| 325 | |
Alan Cox | c19483c | 2010-10-22 14:11:26 +0100 | [diff] [blame] | 326 | /* Error if the tty has no write op instead of leaving an exploitable |
| 327 | hole */ |
| 328 | if (tty->ops->write == NULL) |
| 329 | return -EOPNOTSUPP; |
| 330 | |
Valentin Ilie | a08b15e | 2013-08-12 18:46:00 +0300 | [diff] [blame] | 331 | hu = kzalloc(sizeof(struct hci_uart), GFP_KERNEL); |
| 332 | if (!hu) { |
Marcel Holtmann | 7785162 | 2006-09-21 16:23:19 +0200 | [diff] [blame] | 333 | BT_ERR("Can't allocate control structure"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 334 | return -ENFILE; |
| 335 | } |
Marcel Holtmann | 0372a66 | 2005-10-28 19:20:45 +0200 | [diff] [blame] | 336 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 337 | tty->disc_data = hu; |
| 338 | hu->tty = tty; |
Alan Cox | 33f0f88 | 2006-01-09 20:54:13 -0800 | [diff] [blame] | 339 | tty->receive_room = 65536; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 340 | |
Johan Hedberg | 9f2aee8 | 2012-07-16 16:12:11 +0300 | [diff] [blame] | 341 | INIT_WORK(&hu->init_ready, hci_uart_init_work); |
Felipe Balbi | da64c27 | 2014-04-23 09:58:26 -0500 | [diff] [blame] | 342 | INIT_WORK(&hu->write_work, hci_uart_write_work); |
Johan Hedberg | 9f2aee8 | 2012-07-16 16:12:11 +0300 | [diff] [blame] | 343 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 344 | spin_lock_init(&hu->rx_lock); |
| 345 | |
| 346 | /* Flush any pending characters in the driver and line discipline. */ |
Marcel Holtmann | 0372a66 | 2005-10-28 19:20:45 +0200 | [diff] [blame] | 347 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 348 | /* FIXME: why is this needed. Note don't use ldisc_ref here as the |
| 349 | open path is before the ldisc is referencable */ |
Marcel Holtmann | 0372a66 | 2005-10-28 19:20:45 +0200 | [diff] [blame] | 350 | |
Alan Cox | c65c9bc | 2009-06-11 12:50:12 +0100 | [diff] [blame] | 351 | if (tty->ldisc->ops->flush_buffer) |
| 352 | tty->ldisc->ops->flush_buffer(tty); |
Alan Cox | f34d7a5 | 2008-04-30 00:54:13 -0700 | [diff] [blame] | 353 | tty_driver_flush_buffer(tty); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 354 | |
| 355 | return 0; |
| 356 | } |
| 357 | |
| 358 | /* hci_uart_tty_close() |
| 359 | * |
| 360 | * Called when the line discipline is changed to something |
| 361 | * else, the tty is closed, or the tty detects a hangup. |
| 362 | */ |
| 363 | static void hci_uart_tty_close(struct tty_struct *tty) |
| 364 | { |
Marcel Holtmann | dfe19d2 | 2015-04-04 19:57:21 -0700 | [diff] [blame] | 365 | struct hci_uart *hu = tty->disc_data; |
Johan Hedberg | dac670b | 2012-07-16 16:12:10 +0300 | [diff] [blame] | 366 | struct hci_dev *hdev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 367 | |
| 368 | BT_DBG("tty %p", tty); |
| 369 | |
| 370 | /* Detach from the tty */ |
| 371 | tty->disc_data = NULL; |
| 372 | |
Johan Hedberg | dac670b | 2012-07-16 16:12:10 +0300 | [diff] [blame] | 373 | if (!hu) |
| 374 | return; |
Marcel Holtmann | 22ad420 | 2007-05-09 09:15:40 +0200 | [diff] [blame] | 375 | |
Johan Hedberg | dac670b | 2012-07-16 16:12:10 +0300 | [diff] [blame] | 376 | hdev = hu->hdev; |
| 377 | if (hdev) |
| 378 | hci_uart_close(hdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 379 | |
Felipe Balbi | da64c27 | 2014-04-23 09:58:26 -0500 | [diff] [blame] | 380 | cancel_work_sync(&hu->write_work); |
| 381 | |
Johan Hedberg | dac670b | 2012-07-16 16:12:10 +0300 | [diff] [blame] | 382 | if (test_and_clear_bit(HCI_UART_PROTO_SET, &hu->flags)) { |
| 383 | if (hdev) { |
Johan Hedberg | 9f2aee8 | 2012-07-16 16:12:11 +0300 | [diff] [blame] | 384 | if (test_bit(HCI_UART_REGISTERED, &hu->flags)) |
| 385 | hci_unregister_dev(hdev); |
Johan Hedberg | dac670b | 2012-07-16 16:12:10 +0300 | [diff] [blame] | 386 | hci_free_dev(hdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 387 | } |
Johan Hedberg | dac670b | 2012-07-16 16:12:10 +0300 | [diff] [blame] | 388 | hu->proto->close(hu); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 389 | } |
Johan Hedberg | dac670b | 2012-07-16 16:12:10 +0300 | [diff] [blame] | 390 | |
| 391 | kfree(hu); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 392 | } |
| 393 | |
| 394 | /* hci_uart_tty_wakeup() |
| 395 | * |
| 396 | * Callback for transmit wakeup. Called when low level |
| 397 | * device driver can accept more send data. |
| 398 | * |
| 399 | * Arguments: tty pointer to associated tty instance data |
| 400 | * Return Value: None |
| 401 | */ |
| 402 | static void hci_uart_tty_wakeup(struct tty_struct *tty) |
| 403 | { |
Marcel Holtmann | dfe19d2 | 2015-04-04 19:57:21 -0700 | [diff] [blame] | 404 | struct hci_uart *hu = tty->disc_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 405 | |
| 406 | BT_DBG(""); |
| 407 | |
| 408 | if (!hu) |
| 409 | return; |
| 410 | |
| 411 | clear_bit(TTY_DO_WRITE_WAKEUP, &tty->flags); |
| 412 | |
| 413 | if (tty != hu->tty) |
| 414 | return; |
| 415 | |
| 416 | if (test_bit(HCI_UART_PROTO_SET, &hu->flags)) |
| 417 | hci_uart_tx_wakeup(hu); |
| 418 | } |
| 419 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 420 | /* hci_uart_tty_receive() |
Chan-yeol Park | 1687dfc | 2013-04-02 21:24:23 +0900 | [diff] [blame] | 421 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 422 | * Called by tty low level driver when receive data is |
| 423 | * available. |
Chan-yeol Park | 1687dfc | 2013-04-02 21:24:23 +0900 | [diff] [blame] | 424 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 425 | * Arguments: tty pointer to tty isntance data |
| 426 | * data pointer to received data |
| 427 | * flags pointer to flags for data |
| 428 | * count count of received data in bytes |
Chan-yeol Park | 1687dfc | 2013-04-02 21:24:23 +0900 | [diff] [blame] | 429 | * |
Linus Torvalds | 55db4c6 | 2011-06-04 06:33:24 +0900 | [diff] [blame] | 430 | * Return Value: None |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 431 | */ |
Marcel Holtmann | facf522 | 2015-04-04 19:57:22 -0700 | [diff] [blame] | 432 | static void hci_uart_tty_receive(struct tty_struct *tty, const u8 *data, |
| 433 | char *flags, int count) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 434 | { |
Marcel Holtmann | dfe19d2 | 2015-04-04 19:57:21 -0700 | [diff] [blame] | 435 | struct hci_uart *hu = tty->disc_data; |
Marcel Holtmann | 0372a66 | 2005-10-28 19:20:45 +0200 | [diff] [blame] | 436 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 437 | if (!hu || tty != hu->tty) |
Linus Torvalds | 55db4c6 | 2011-06-04 06:33:24 +0900 | [diff] [blame] | 438 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 439 | |
| 440 | if (!test_bit(HCI_UART_PROTO_SET, &hu->flags)) |
Linus Torvalds | 55db4c6 | 2011-06-04 06:33:24 +0900 | [diff] [blame] | 441 | return; |
Marcel Holtmann | 0372a66 | 2005-10-28 19:20:45 +0200 | [diff] [blame] | 442 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 443 | spin_lock(&hu->rx_lock); |
Marcel Holtmann | 9d1c40e | 2015-04-04 20:59:41 -0700 | [diff] [blame] | 444 | hu->proto->recv(hu, data, count); |
Chan-yeol Park | 788f092 | 2013-04-02 21:24:22 +0900 | [diff] [blame] | 445 | |
| 446 | if (hu->hdev) |
| 447 | hu->hdev->stat.byte_rx += count; |
| 448 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 449 | spin_unlock(&hu->rx_lock); |
| 450 | |
Alan Cox | 39c2e60 | 2008-04-30 00:54:18 -0700 | [diff] [blame] | 451 | tty_unthrottle(tty); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 452 | } |
| 453 | |
| 454 | static int hci_uart_register_dev(struct hci_uart *hu) |
| 455 | { |
| 456 | struct hci_dev *hdev; |
| 457 | |
| 458 | BT_DBG(""); |
| 459 | |
| 460 | /* Initialize and register HCI device */ |
| 461 | hdev = hci_alloc_dev(); |
| 462 | if (!hdev) { |
| 463 | BT_ERR("Can't allocate HCI device"); |
| 464 | return -ENOMEM; |
| 465 | } |
| 466 | |
| 467 | hu->hdev = hdev; |
| 468 | |
Marcel Holtmann | c13854c | 2010-02-08 15:27:07 +0100 | [diff] [blame] | 469 | hdev->bus = HCI_UART; |
David Herrmann | 155961e | 2012-02-09 21:58:32 +0100 | [diff] [blame] | 470 | hci_set_drvdata(hdev, hu); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 471 | |
| 472 | hdev->open = hci_uart_open; |
| 473 | hdev->close = hci_uart_close; |
| 474 | hdev->flush = hci_uart_flush; |
| 475 | hdev->send = hci_uart_send_frame; |
Loic Poulain | eb17380 | 2015-03-25 15:19:30 +0100 | [diff] [blame] | 476 | hdev->setup = hci_uart_setup; |
David Herrmann | 6935e0f | 2012-03-09 15:53:42 +0100 | [diff] [blame] | 477 | SET_HCIDEV_DEV(hdev, hu->tty->dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 478 | |
Johan Hedberg | 63c7d09 | 2010-07-12 11:37:04 -0300 | [diff] [blame] | 479 | if (test_bit(HCI_UART_RAW_DEVICE, &hu->hdev_flags)) |
| 480 | set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks); |
| 481 | |
Marcel Holtmann | 6afd04a | 2014-07-11 07:12:58 +0200 | [diff] [blame] | 482 | if (test_bit(HCI_UART_EXT_CONFIG, &hu->hdev_flags)) |
| 483 | set_bit(HCI_QUIRK_EXTERNAL_CONFIG, &hdev->quirks); |
| 484 | |
Marcel Holtmann | a55e1f3 | 2012-02-24 17:12:24 +0100 | [diff] [blame] | 485 | if (!test_bit(HCI_UART_RESET_ON_INIT, &hu->hdev_flags)) |
Szymon Janc | a6c511c | 2012-05-23 12:35:46 +0200 | [diff] [blame] | 486 | set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks); |
Marcel Holtmann | a55e1f3 | 2012-02-24 17:12:24 +0100 | [diff] [blame] | 487 | |
Marcel Holtmann | 8a7a3fd | 2012-02-24 17:09:38 +0100 | [diff] [blame] | 488 | if (test_bit(HCI_UART_CREATE_AMP, &hu->hdev_flags)) |
| 489 | hdev->dev_type = HCI_AMP; |
| 490 | else |
| 491 | hdev->dev_type = HCI_BREDR; |
| 492 | |
Johan Hedberg | 9f2aee8 | 2012-07-16 16:12:11 +0300 | [diff] [blame] | 493 | if (test_bit(HCI_UART_INIT_PENDING, &hu->hdev_flags)) |
| 494 | return 0; |
| 495 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 496 | if (hci_register_dev(hdev) < 0) { |
| 497 | BT_ERR("Can't register HCI device"); |
| 498 | hci_free_dev(hdev); |
| 499 | return -ENODEV; |
| 500 | } |
| 501 | |
Johan Hedberg | 9f2aee8 | 2012-07-16 16:12:11 +0300 | [diff] [blame] | 502 | set_bit(HCI_UART_REGISTERED, &hu->flags); |
| 503 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 504 | return 0; |
| 505 | } |
| 506 | |
| 507 | static int hci_uart_set_proto(struct hci_uart *hu, int id) |
| 508 | { |
| 509 | struct hci_uart_proto *p; |
Marcel Holtmann | 0372a66 | 2005-10-28 19:20:45 +0200 | [diff] [blame] | 510 | int err; |
| 511 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 512 | p = hci_uart_get_proto(id); |
| 513 | if (!p) |
| 514 | return -EPROTONOSUPPORT; |
| 515 | |
| 516 | err = p->open(hu); |
| 517 | if (err) |
| 518 | return err; |
| 519 | |
| 520 | hu->proto = p; |
| 521 | |
| 522 | err = hci_uart_register_dev(hu); |
| 523 | if (err) { |
| 524 | p->close(hu); |
| 525 | return err; |
| 526 | } |
Marcel Holtmann | 0372a66 | 2005-10-28 19:20:45 +0200 | [diff] [blame] | 527 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 528 | return 0; |
| 529 | } |
| 530 | |
Marcel Holtmann | bb72bd6 | 2014-07-11 07:12:57 +0200 | [diff] [blame] | 531 | static int hci_uart_set_flags(struct hci_uart *hu, unsigned long flags) |
| 532 | { |
| 533 | unsigned long valid_flags = BIT(HCI_UART_RAW_DEVICE) | |
| 534 | BIT(HCI_UART_RESET_ON_INIT) | |
| 535 | BIT(HCI_UART_CREATE_AMP) | |
Marcel Holtmann | 6afd04a | 2014-07-11 07:12:58 +0200 | [diff] [blame] | 536 | BIT(HCI_UART_INIT_PENDING) | |
Marcel Holtmann | fb2ce8d | 2015-04-04 16:13:01 -0700 | [diff] [blame] | 537 | BIT(HCI_UART_EXT_CONFIG) | |
| 538 | BIT(HCI_UART_VND_DETECT); |
Marcel Holtmann | bb72bd6 | 2014-07-11 07:12:57 +0200 | [diff] [blame] | 539 | |
Marcel Holtmann | 41533fe | 2015-04-01 13:51:51 -0700 | [diff] [blame] | 540 | if (flags & ~valid_flags) |
Marcel Holtmann | bb72bd6 | 2014-07-11 07:12:57 +0200 | [diff] [blame] | 541 | return -EINVAL; |
| 542 | |
| 543 | hu->hdev_flags = flags; |
| 544 | |
| 545 | return 0; |
| 546 | } |
| 547 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 548 | /* hci_uart_tty_ioctl() |
| 549 | * |
| 550 | * Process IOCTL system call for the tty device. |
| 551 | * |
| 552 | * Arguments: |
| 553 | * |
| 554 | * tty pointer to tty instance data |
| 555 | * file pointer to open file object for device |
| 556 | * cmd IOCTL command code |
| 557 | * arg argument for IOCTL call (cmd dependent) |
| 558 | * |
| 559 | * Return Value: Command dependent |
| 560 | */ |
Marcel Holtmann | facf522 | 2015-04-04 19:57:22 -0700 | [diff] [blame] | 561 | static int hci_uart_tty_ioctl(struct tty_struct *tty, struct file *file, |
| 562 | unsigned int cmd, unsigned long arg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 563 | { |
Marcel Holtmann | dfe19d2 | 2015-04-04 19:57:21 -0700 | [diff] [blame] | 564 | struct hci_uart *hu = tty->disc_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 565 | int err = 0; |
| 566 | |
| 567 | BT_DBG(""); |
| 568 | |
| 569 | /* Verify the status of the device */ |
| 570 | if (!hu) |
| 571 | return -EBADF; |
| 572 | |
| 573 | switch (cmd) { |
| 574 | case HCIUARTSETPROTO: |
| 575 | if (!test_and_set_bit(HCI_UART_PROTO_SET, &hu->flags)) { |
| 576 | err = hci_uart_set_proto(hu, arg); |
| 577 | if (err) { |
| 578 | clear_bit(HCI_UART_PROTO_SET, &hu->flags); |
| 579 | return err; |
| 580 | } |
Marcel Holtmann | 0372a66 | 2005-10-28 19:20:45 +0200 | [diff] [blame] | 581 | } else |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 582 | return -EBUSY; |
Marcel Holtmann | c33be3c | 2007-05-09 09:15:45 +0200 | [diff] [blame] | 583 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 584 | |
| 585 | case HCIUARTGETPROTO: |
| 586 | if (test_bit(HCI_UART_PROTO_SET, &hu->flags)) |
| 587 | return hu->proto->id; |
| 588 | return -EUNATCH; |
Marcel Holtmann | 0372a66 | 2005-10-28 19:20:45 +0200 | [diff] [blame] | 589 | |
Marcel Holtmann | d215874 | 2007-05-09 09:15:35 +0200 | [diff] [blame] | 590 | case HCIUARTGETDEVICE: |
Marcel Holtmann | c7e0c14 | 2014-07-12 17:00:29 +0200 | [diff] [blame] | 591 | if (test_bit(HCI_UART_REGISTERED, &hu->flags)) |
Marcel Holtmann | d215874 | 2007-05-09 09:15:35 +0200 | [diff] [blame] | 592 | return hu->hdev->id; |
| 593 | return -EUNATCH; |
| 594 | |
Johan Hedberg | 63c7d09 | 2010-07-12 11:37:04 -0300 | [diff] [blame] | 595 | case HCIUARTSETFLAGS: |
| 596 | if (test_bit(HCI_UART_PROTO_SET, &hu->flags)) |
| 597 | return -EBUSY; |
Marcel Holtmann | bb72bd6 | 2014-07-11 07:12:57 +0200 | [diff] [blame] | 598 | err = hci_uart_set_flags(hu, arg); |
| 599 | if (err) |
| 600 | return err; |
Johan Hedberg | 63c7d09 | 2010-07-12 11:37:04 -0300 | [diff] [blame] | 601 | break; |
| 602 | |
| 603 | case HCIUARTGETFLAGS: |
| 604 | return hu->hdev_flags; |
| 605 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 606 | default: |
Alan Cox | 47afa7a | 2008-10-13 10:44:17 +0100 | [diff] [blame] | 607 | err = n_tty_ioctl_helper(tty, file, cmd, arg); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 608 | break; |
Peter Senna Tschudin | a20890d | 2012-09-07 17:24:39 +0200 | [diff] [blame] | 609 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 610 | |
| 611 | return err; |
| 612 | } |
| 613 | |
| 614 | /* |
| 615 | * We don't provide read/write/poll interface for user space. |
| 616 | */ |
Marcel Holtmann | 0372a66 | 2005-10-28 19:20:45 +0200 | [diff] [blame] | 617 | static ssize_t hci_uart_tty_read(struct tty_struct *tty, struct file *file, |
Marcel Holtmann | facf522 | 2015-04-04 19:57:22 -0700 | [diff] [blame] | 618 | unsigned char __user *buf, size_t nr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 619 | { |
| 620 | return 0; |
| 621 | } |
| 622 | |
Marcel Holtmann | 0372a66 | 2005-10-28 19:20:45 +0200 | [diff] [blame] | 623 | static ssize_t hci_uart_tty_write(struct tty_struct *tty, struct file *file, |
Marcel Holtmann | facf522 | 2015-04-04 19:57:22 -0700 | [diff] [blame] | 624 | const unsigned char *data, size_t count) |
Marcel Holtmann | 0372a66 | 2005-10-28 19:20:45 +0200 | [diff] [blame] | 625 | { |
| 626 | return 0; |
| 627 | } |
| 628 | |
| 629 | static unsigned int hci_uart_tty_poll(struct tty_struct *tty, |
Marcel Holtmann | facf522 | 2015-04-04 19:57:22 -0700 | [diff] [blame] | 630 | struct file *filp, poll_table *wait) |
Marcel Holtmann | 0372a66 | 2005-10-28 19:20:45 +0200 | [diff] [blame] | 631 | { |
| 632 | return 0; |
| 633 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 634 | |
| 635 | static int __init hci_uart_init(void) |
| 636 | { |
Alan Cox | a352def | 2008-07-16 21:53:12 +0100 | [diff] [blame] | 637 | static struct tty_ldisc_ops hci_uart_ldisc; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 638 | int err; |
| 639 | |
| 640 | BT_INFO("HCI UART driver ver %s", VERSION); |
| 641 | |
| 642 | /* Register the tty discipline */ |
| 643 | |
| 644 | memset(&hci_uart_ldisc, 0, sizeof (hci_uart_ldisc)); |
Marcel Holtmann | 0372a66 | 2005-10-28 19:20:45 +0200 | [diff] [blame] | 645 | hci_uart_ldisc.magic = TTY_LDISC_MAGIC; |
| 646 | hci_uart_ldisc.name = "n_hci"; |
| 647 | hci_uart_ldisc.open = hci_uart_tty_open; |
| 648 | hci_uart_ldisc.close = hci_uart_tty_close; |
| 649 | hci_uart_ldisc.read = hci_uart_tty_read; |
| 650 | hci_uart_ldisc.write = hci_uart_tty_write; |
| 651 | hci_uart_ldisc.ioctl = hci_uart_tty_ioctl; |
| 652 | hci_uart_ldisc.poll = hci_uart_tty_poll; |
Marcel Holtmann | 0372a66 | 2005-10-28 19:20:45 +0200 | [diff] [blame] | 653 | hci_uart_ldisc.receive_buf = hci_uart_tty_receive; |
| 654 | hci_uart_ldisc.write_wakeup = hci_uart_tty_wakeup; |
| 655 | hci_uart_ldisc.owner = THIS_MODULE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 656 | |
Valentin Ilie | a08b15e | 2013-08-12 18:46:00 +0300 | [diff] [blame] | 657 | err = tty_register_ldisc(N_HCI, &hci_uart_ldisc); |
| 658 | if (err) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 659 | BT_ERR("HCI line discipline registration failed. (%d)", err); |
| 660 | return err; |
| 661 | } |
| 662 | |
| 663 | #ifdef CONFIG_BT_HCIUART_H4 |
| 664 | h4_init(); |
| 665 | #endif |
| 666 | #ifdef CONFIG_BT_HCIUART_BCSP |
| 667 | bcsp_init(); |
| 668 | #endif |
Ohad Ben-Cohen | 166d2f6 | 2007-10-20 13:42:36 +0200 | [diff] [blame] | 669 | #ifdef CONFIG_BT_HCIUART_LL |
| 670 | ll_init(); |
| 671 | #endif |
Suraj Sumangala | b3190df | 2010-07-19 12:34:07 +0530 | [diff] [blame] | 672 | #ifdef CONFIG_BT_HCIUART_ATH3K |
| 673 | ath_init(); |
| 674 | #endif |
Johan Hedberg | 7dec65c | 2012-07-16 16:12:02 +0300 | [diff] [blame] | 675 | #ifdef CONFIG_BT_HCIUART_3WIRE |
| 676 | h5_init(); |
| 677 | #endif |
Ohad Ben-Cohen | 166d2f6 | 2007-10-20 13:42:36 +0200 | [diff] [blame] | 678 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 679 | return 0; |
| 680 | } |
| 681 | |
| 682 | static void __exit hci_uart_exit(void) |
| 683 | { |
| 684 | int err; |
| 685 | |
| 686 | #ifdef CONFIG_BT_HCIUART_H4 |
| 687 | h4_deinit(); |
| 688 | #endif |
| 689 | #ifdef CONFIG_BT_HCIUART_BCSP |
| 690 | bcsp_deinit(); |
| 691 | #endif |
Ohad Ben-Cohen | 166d2f6 | 2007-10-20 13:42:36 +0200 | [diff] [blame] | 692 | #ifdef CONFIG_BT_HCIUART_LL |
| 693 | ll_deinit(); |
| 694 | #endif |
Suraj Sumangala | b3190df | 2010-07-19 12:34:07 +0530 | [diff] [blame] | 695 | #ifdef CONFIG_BT_HCIUART_ATH3K |
| 696 | ath_deinit(); |
| 697 | #endif |
Johan Hedberg | 7dec65c | 2012-07-16 16:12:02 +0300 | [diff] [blame] | 698 | #ifdef CONFIG_BT_HCIUART_3WIRE |
| 699 | h5_deinit(); |
| 700 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 701 | |
| 702 | /* Release tty registration of line discipline */ |
Valentin Ilie | a08b15e | 2013-08-12 18:46:00 +0300 | [diff] [blame] | 703 | err = tty_unregister_ldisc(N_HCI); |
| 704 | if (err) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 705 | BT_ERR("Can't unregister HCI line discipline (%d)", err); |
| 706 | } |
| 707 | |
| 708 | module_init(hci_uart_init); |
| 709 | module_exit(hci_uart_exit); |
| 710 | |
Marcel Holtmann | 63fbd24 | 2008-08-18 13:23:53 +0200 | [diff] [blame] | 711 | MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 712 | MODULE_DESCRIPTION("Bluetooth HCI UART driver ver " VERSION); |
| 713 | MODULE_VERSION(VERSION); |
| 714 | MODULE_LICENSE("GPL"); |
| 715 | MODULE_ALIAS_LDISC(N_HCI); |