aircable.c revision 5a0e3ad6af8660be21ca98a971cd00f331318c05
13fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo/* 23fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo * AIRcable USB Bluetooth Dongle Driver. 33fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo * 43fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo * Copyright (C) 2006 Manuel Francisco Naranjo (naranjo.manuel@gmail.com) 53fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo * This program is free software; you can redistribute it and/or modify it under 63fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo * the terms of the GNU General Public License version 2 as published by the 73fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo * Free Software Foundation. 83fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo * 93fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo * The device works as an standard CDC device, it has 2 interfaces, the first 103fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo * one is for firmware access and the second is the serial one. 113fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo * The protocol is very simply, there are two posibilities reading or writing. 12beb7dd86a101263bf63a78c7c6d4da3849b35bd6Robert P. J. Day * When writing the first urb must have a Header that starts with 0x20 0x29 the 133fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo * next two bytes must say how much data will be sended. 143fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo * When reading the process is almost equal except that the header starts with 153fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo * 0x00 0x20. 163fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo * 173fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo * The device simply need some stuff to understand data comming from the usb 183fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo * buffer: The First and Second byte is used for a Header, the Third and Fourth 193fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo * tells the device the amount of information the package holds. 203fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo * Packages are 60 bytes long Header Stuff. 21beb7dd86a101263bf63a78c7c6d4da3849b35bd6Robert P. J. Day * When writing to the device the first two bytes of the header are 0x20 0x29 223fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo * When reading the bytes are 0x00 0x20, or 0x00 0x10, there is an strange 233fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo * situation, when too much data arrives to the device because it sends the data 243fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo * but with out the header. I will use a simply hack to override this situation, 253fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo * if there is data coming that does not contain any header, then that is data 263fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo * that must go directly to the tty, as there is no documentation about if there 273fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo * is any other control code, I will simply check for the first 283fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo * one. 293fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo * 303fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo * The driver registers himself with the USB-serial core and the USB Core. I had 313fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo * to implement a probe function agains USB-serial, because other way, the 323fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo * driver was attaching himself to both interfaces. I have tryed with different 333fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo * configurations of usb_serial_driver with out exit, only the probe function 343fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo * could handle this correctly. 353fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo * 363fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo * I have taken some info from a Greg Kroah-Hartman article: 373fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo * http://www.linuxjournal.com/article/6573 383fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo * And from Linux Device Driver Kit CD, which is a great work, the authors taken 393fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo * the work to recompile lots of information an knowladge in drivers development 403fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo * and made it all avaible inside a cd. 413fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo * URL: http://kernel.org/pub/linux/kernel/people/gregkh/ddk/ 423fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo * 433fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo */ 443fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo 453fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo#include <linux/tty.h> 465a0e3ad6af8660be21ca98a971cd00f331318c05Tejun Heo#include <linux/slab.h> 473fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo#include <linux/tty_flip.h> 483fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo#include <linux/circ_buf.h> 493fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo#include <linux/usb.h> 503fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo#include <linux/usb/serial.h> 513fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo 523fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjostatic int debug; 533fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo 543fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo/* Vendor and Product ID */ 553fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo#define AIRCABLE_VID 0x16CA 563fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo#define AIRCABLE_USB_PID 0x1502 573fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo 583fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo/* write buffer size defines */ 593fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo#define AIRCABLE_BUF_SIZE 2048 603fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo 613fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo/* Protocol Stuff */ 623fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo#define HCI_HEADER_LENGTH 0x4 633fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo#define TX_HEADER_0 0x20 643fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo#define TX_HEADER_1 0x29 653fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo#define RX_HEADER_0 0x00 663fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo#define RX_HEADER_1 0x20 673fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo#define MAX_HCI_FRAMESIZE 60 683fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo#define HCI_COMPLETE_FRAME 64 693fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo 703fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo/* rx_flags */ 713fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo#define THROTTLED 0x01 723fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo#define ACTUALLY_THROTTLED 0x02 733fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo 743fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo/* 753fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo * Version Information 763fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo */ 773fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo#define DRIVER_VERSION "v1.0b2" 783fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo#define DRIVER_AUTHOR "Naranjo, Manuel Francisco <naranjo.manuel@gmail.com>" 793fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo#define DRIVER_DESC "AIRcable USB Driver" 803fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo 813fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo/* ID table that will be registered with USB core */ 827d40d7e85a25e01948bcb4dc3eda1355af318337Németh Mártonstatic const struct usb_device_id id_table[] = { 833fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo { USB_DEVICE(AIRCABLE_VID, AIRCABLE_USB_PID) }, 843fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo { }, 853fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo}; 863fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco NaranjoMODULE_DEVICE_TABLE(usb, id_table); 873fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo 883fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo 893fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo/* Internal Structure */ 903fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjostruct aircable_private { 913fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo spinlock_t rx_lock; /* spinlock for the receive lines */ 923fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo struct circ_buf *tx_buf; /* write buffer */ 933fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo struct circ_buf *rx_buf; /* read buffer */ 943fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo int rx_flags; /* for throttilng */ 953fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo struct work_struct rx_work; /* work cue for the receiving line */ 96c4028958b6ecad064b1a6303a6a5906d4fe48d73David Howells struct usb_serial_port *port; /* USB port with which associated */ 973fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo}; 983fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo 993fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo/* Private methods */ 1003fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo 1013fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo/* Circular Buffer Methods, code from ti_usb_3410_5052 used */ 1023fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo/* 1033fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo * serial_buf_clear 1043fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo * 1053fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo * Clear out all data in the circular buffer. 1063fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo */ 1073fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjostatic void serial_buf_clear(struct circ_buf *cb) 1083fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo{ 1093fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo cb->head = cb->tail = 0; 1103fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo} 1113fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo 1123fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo/* 1133fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo * serial_buf_alloc 1143fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo * 1153fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo * Allocate a circular buffer and all associated memory. 1163fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo */ 1173fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjostatic struct circ_buf *serial_buf_alloc(void) 1183fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo{ 1193fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo struct circ_buf *cb; 1203fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo cb = kmalloc(sizeof(struct circ_buf), GFP_KERNEL); 1213fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo if (cb == NULL) 1223fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo return NULL; 1233fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo cb->buf = kmalloc(AIRCABLE_BUF_SIZE, GFP_KERNEL); 1243fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo if (cb->buf == NULL) { 1253fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo kfree(cb); 1263fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo return NULL; 1273fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo } 1283fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo serial_buf_clear(cb); 1293fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo return cb; 1303fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo} 1313fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo 1323fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo/* 1333fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo * serial_buf_free 1343fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo * 1353fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo * Free the buffer and all associated memory. 1363fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo */ 1373fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjostatic void serial_buf_free(struct circ_buf *cb) 1383fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo{ 1393fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo kfree(cb->buf); 1403fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo kfree(cb); 1413fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo} 1423fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo 1433fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo/* 1443fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo * serial_buf_data_avail 1453fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo * 1463fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo * Return the number of bytes of data available in the circular 1473fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo * buffer. 1483fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo */ 1493fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjostatic int serial_buf_data_avail(struct circ_buf *cb) 1503fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo{ 151c4d0f8cbca3a97900f85b082064a63c7a5928bd7Alan Cox return CIRC_CNT(cb->head, cb->tail, AIRCABLE_BUF_SIZE); 1523fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo} 1533fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo 1543fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo/* 1553fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo * serial_buf_put 1563fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo * 1573fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo * Copy data data from a user buffer and put it into the circular buffer. 1583fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo * Restrict to the amount of space available. 1593fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo * 1603fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo * Return the number of bytes copied. 1613fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo */ 1623fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjostatic int serial_buf_put(struct circ_buf *cb, const char *buf, int count) 1633fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo{ 1643fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo int c, ret = 0; 1653fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo while (1) { 1663fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo c = CIRC_SPACE_TO_END(cb->head, cb->tail, AIRCABLE_BUF_SIZE); 1673fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo if (count < c) 1683fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo c = count; 1693fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo if (c <= 0) 1703fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo break; 1713fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo memcpy(cb->buf + cb->head, buf, c); 1723fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo cb->head = (cb->head + c) & (AIRCABLE_BUF_SIZE-1); 1733fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo buf += c; 1743fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo count -= c; 175c4d0f8cbca3a97900f85b082064a63c7a5928bd7Alan Cox ret = c; 1763fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo } 1773fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo return ret; 1783fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo} 1793fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo 1803fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo/* 1813fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo * serial_buf_get 1823fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo * 1833fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo * Get data from the circular buffer and copy to the given buffer. 1843fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo * Restrict to the amount of data available. 1853fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo * 1863fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo * Return the number of bytes copied. 1873fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo */ 1883fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjostatic int serial_buf_get(struct circ_buf *cb, char *buf, int count) 1893fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo{ 1903fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo int c, ret = 0; 1913fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo while (1) { 1923fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo c = CIRC_CNT_TO_END(cb->head, cb->tail, AIRCABLE_BUF_SIZE); 1933fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo if (count < c) 1943fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo c = count; 1953fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo if (c <= 0) 1963fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo break; 1973fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo memcpy(buf, cb->buf + cb->tail, c); 1983fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo cb->tail = (cb->tail + c) & (AIRCABLE_BUF_SIZE-1); 1993fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo buf += c; 2003fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo count -= c; 201c4d0f8cbca3a97900f85b082064a63c7a5928bd7Alan Cox ret = c; 2023fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo } 2033fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo return ret; 2043fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo} 2053fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo 2063fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo/* End of circula buffer methods */ 2073fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo 2083fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjostatic void aircable_send(struct usb_serial_port *port) 2093fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo{ 2103fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo int count, result; 2113fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo struct aircable_private *priv = usb_get_serial_port_data(port); 212c4d0f8cbca3a97900f85b082064a63c7a5928bd7Alan Cox unsigned char *buf; 213fd05e720099e8eeddb378305d1a41c1445344b91Al Viro __le16 *dbuf; 214441b62c1edb986827154768d89bbac0ba779984fHarvey Harrison dbg("%s - port %d", __func__, port->number); 2153fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo if (port->write_urb_busy) 2163fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo return; 2173fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo 2183fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo count = min(serial_buf_data_avail(priv->tx_buf), MAX_HCI_FRAMESIZE); 2193fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo if (count == 0) 2203fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo return; 2213fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo 2223fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo buf = kzalloc(count + HCI_HEADER_LENGTH, GFP_ATOMIC); 2233fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo if (!buf) { 224194343d9364ea07c9f27c4505380a15a905e8a24Greg Kroah-Hartman dev_err(&port->dev, "%s- kzalloc(%d) failed.\n", 225194343d9364ea07c9f27c4505380a15a905e8a24Greg Kroah-Hartman __func__, count + HCI_HEADER_LENGTH); 2263fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo return; 2273fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo } 2283fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo 2293fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo buf[0] = TX_HEADER_0; 2303fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo buf[1] = TX_HEADER_1; 231fd05e720099e8eeddb378305d1a41c1445344b91Al Viro dbuf = (__le16 *)&buf[2]; 232b19d402a3450bb2597d0c1b54f6139462a5f35aeOliver Neukum *dbuf = cpu_to_le16((u16)count); 233c4d0f8cbca3a97900f85b082064a63c7a5928bd7Alan Cox serial_buf_get(priv->tx_buf, buf + HCI_HEADER_LENGTH, 234c4d0f8cbca3a97900f85b082064a63c7a5928bd7Alan Cox MAX_HCI_FRAMESIZE); 2353fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo 2363fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo memcpy(port->write_urb->transfer_buffer, buf, 2373fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo count + HCI_HEADER_LENGTH); 2383fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo 2393fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo kfree(buf); 2403fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo port->write_urb_busy = 1; 241441b62c1edb986827154768d89bbac0ba779984fHarvey Harrison usb_serial_debug_data(debug, &port->dev, __func__, 2423fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo count + HCI_HEADER_LENGTH, 2433fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo port->write_urb->transfer_buffer); 2443fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo port->write_urb->transfer_buffer_length = count + HCI_HEADER_LENGTH; 2453fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo port->write_urb->dev = port->serial->dev; 2463fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo result = usb_submit_urb(port->write_urb, GFP_ATOMIC); 2473fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo 2483fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo if (result) { 2493fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo dev_err(&port->dev, 2503fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo "%s - failed submitting write urb, error %d\n", 251441b62c1edb986827154768d89bbac0ba779984fHarvey Harrison __func__, result); 2523fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo port->write_urb_busy = 0; 2533fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo } 2543fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo 2553fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo schedule_work(&port->work); 2563fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo} 2573fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo 258c4028958b6ecad064b1a6303a6a5906d4fe48d73David Howellsstatic void aircable_read(struct work_struct *work) 2593fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo{ 260c4028958b6ecad064b1a6303a6a5906d4fe48d73David Howells struct aircable_private *priv = 261c4028958b6ecad064b1a6303a6a5906d4fe48d73David Howells container_of(work, struct aircable_private, rx_work); 262c4028958b6ecad064b1a6303a6a5906d4fe48d73David Howells struct usb_serial_port *port = priv->port; 2633fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo struct tty_struct *tty; 2643fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo unsigned char *data; 2653fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo int count; 266c4d0f8cbca3a97900f85b082064a63c7a5928bd7Alan Cox if (priv->rx_flags & THROTTLED) { 2673fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo if (priv->rx_flags & ACTUALLY_THROTTLED) 2683fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo schedule_work(&priv->rx_work); 2693fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo return; 2703fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo } 2713fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo 2723fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo /* By now I will flush data to the tty in packages of no more than 2733fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo * 64 bytes, to ensure I do not get throttled. 2743fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo * Ask USB mailing list for better aproach. 2753fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo */ 2764a90f09b20f4622dcbff1f0e1e6bae1704f8ad8cAlan Cox tty = tty_port_tty_get(&port->port); 2773fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo 2787a5c7b42d3c7b1e0085d48414ee73003d3888d1fNaranjo Manuel Francisco if (!tty) { 2793fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo schedule_work(&priv->rx_work); 280194343d9364ea07c9f27c4505380a15a905e8a24Greg Kroah-Hartman dev_err(&port->dev, "%s - No tty available\n", __func__); 2817a5c7b42d3c7b1e0085d48414ee73003d3888d1fNaranjo Manuel Francisco return ; 2827a5c7b42d3c7b1e0085d48414ee73003d3888d1fNaranjo Manuel Francisco } 2833fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo 2843fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo count = min(64, serial_buf_data_avail(priv->rx_buf)); 2853fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo 2863fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo if (count <= 0) 2874a90f09b20f4622dcbff1f0e1e6bae1704f8ad8cAlan Cox goto out; /* We have finished sending everything. */ 2883fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo 2893fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo tty_prepare_flip_string(tty, &data, count); 290c4d0f8cbca3a97900f85b082064a63c7a5928bd7Alan Cox if (!data) { 2914a90f09b20f4622dcbff1f0e1e6bae1704f8ad8cAlan Cox dev_err(&port->dev, "%s- kzalloc(%d) failed.", 2924a90f09b20f4622dcbff1f0e1e6bae1704f8ad8cAlan Cox __func__, count); 2934a90f09b20f4622dcbff1f0e1e6bae1704f8ad8cAlan Cox goto out; 2943fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo } 2953fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo 2963fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo serial_buf_get(priv->rx_buf, data, count); 2973fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo 2983fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo tty_flip_buffer_push(tty); 2993fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo 3003fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo if (serial_buf_data_avail(priv->rx_buf)) 3013fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo schedule_work(&priv->rx_work); 3024a90f09b20f4622dcbff1f0e1e6bae1704f8ad8cAlan Coxout: 3034a90f09b20f4622dcbff1f0e1e6bae1704f8ad8cAlan Cox tty_kref_put(tty); 3043fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo return; 3053fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo} 3063fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo/* End of private methods */ 3073fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo 3083fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjostatic int aircable_probe(struct usb_serial *serial, 3093fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo const struct usb_device_id *id) 3103fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo{ 311c4d0f8cbca3a97900f85b082064a63c7a5928bd7Alan Cox struct usb_host_interface *iface_desc = serial->interface-> 312c4d0f8cbca3a97900f85b082064a63c7a5928bd7Alan Cox cur_altsetting; 3133fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo struct usb_endpoint_descriptor *endpoint; 314c4d0f8cbca3a97900f85b082064a63c7a5928bd7Alan Cox int num_bulk_out = 0; 3153fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo int i; 3163fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo 3173fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo for (i = 0; i < iface_desc->desc.bNumEndpoints; i++) { 3183fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo endpoint = &iface_desc->endpoint[i].desc; 319377f13bf95b64cf5fb0fad0bf2b94106ad868562Luiz Fernando N. Capitulino if (usb_endpoint_is_bulk_out(endpoint)) { 3203fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo dbg("found bulk out on endpoint %d", i); 3213fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo ++num_bulk_out; 3223fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo } 3233fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo } 3243fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo 3253fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo if (num_bulk_out == 0) { 3263fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo dbg("Invalid interface, discarding"); 3273fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo return -ENODEV; 3283fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo } 3293fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo 3303fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo return 0; 3313fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo} 3323fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo 333c4d0f8cbca3a97900f85b082064a63c7a5928bd7Alan Coxstatic int aircable_attach(struct usb_serial *serial) 3343fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo{ 3353fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo struct usb_serial_port *port = serial->port[0]; 3363fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo struct aircable_private *priv; 3373fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo 3383fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo priv = kzalloc(sizeof(struct aircable_private), GFP_KERNEL); 339c4d0f8cbca3a97900f85b082064a63c7a5928bd7Alan Cox if (!priv) { 340194343d9364ea07c9f27c4505380a15a905e8a24Greg Kroah-Hartman dev_err(&port->dev, "%s- kmalloc(%Zd) failed.\n", __func__, 3413fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo sizeof(struct aircable_private)); 3423fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo return -ENOMEM; 3433fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo } 3443fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo 3453fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo /* Allocation of Circular Buffers */ 3463fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo priv->tx_buf = serial_buf_alloc(); 3473fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo if (priv->tx_buf == NULL) { 3483fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo kfree(priv); 3493fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo return -ENOMEM; 3503fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo } 3513fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo 3523fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo priv->rx_buf = serial_buf_alloc(); 3533fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo if (priv->rx_buf == NULL) { 3543fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo kfree(priv->tx_buf); 3553fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo kfree(priv); 3563fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo return -ENOMEM; 3573fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo } 3583fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo 3593fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo priv->rx_flags &= ~(THROTTLED | ACTUALLY_THROTTLED); 360c4028958b6ecad064b1a6303a6a5906d4fe48d73David Howells priv->port = port; 361c4028958b6ecad064b1a6303a6a5906d4fe48d73David Howells INIT_WORK(&priv->rx_work, aircable_read); 3623fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo 3633fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo usb_set_serial_port_data(serial->port[0], priv); 3643fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo 3653fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo return 0; 3663fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo} 3673fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo 368f9c99bb8b3a1ec81af68d484a551307326c2e933Alan Sternstatic void aircable_release(struct usb_serial *serial) 3693fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo{ 3703fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo 3713fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo struct usb_serial_port *port = serial->port[0]; 3723fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo struct aircable_private *priv = usb_get_serial_port_data(port); 3733fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo 374441b62c1edb986827154768d89bbac0ba779984fHarvey Harrison dbg("%s", __func__); 3753fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo 3763fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo if (priv) { 3773fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo serial_buf_free(priv->tx_buf); 3783fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo serial_buf_free(priv->rx_buf); 3793fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo kfree(priv); 3803fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo } 3813fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo} 3823fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo 38395da310e66ee8090119596c70ca8432e57f9a97fAlan Coxstatic int aircable_write_room(struct tty_struct *tty) 3843fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo{ 38595da310e66ee8090119596c70ca8432e57f9a97fAlan Cox struct usb_serial_port *port = tty->driver_data; 3863fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo struct aircable_private *priv = usb_get_serial_port_data(port); 3873fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo return serial_buf_data_avail(priv->tx_buf); 3883fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo} 3893fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo 39095da310e66ee8090119596c70ca8432e57f9a97fAlan Coxstatic int aircable_write(struct tty_struct *tty, struct usb_serial_port *port, 3913fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo const unsigned char *source, int count) 3923fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo{ 3933fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo struct aircable_private *priv = usb_get_serial_port_data(port); 3943fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo int temp; 3953fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo 396441b62c1edb986827154768d89bbac0ba779984fHarvey Harrison dbg("%s - port %d, %d bytes", __func__, port->number, count); 3973fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo 398441b62c1edb986827154768d89bbac0ba779984fHarvey Harrison usb_serial_debug_data(debug, &port->dev, __func__, count, source); 3993fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo 400c4d0f8cbca3a97900f85b082064a63c7a5928bd7Alan Cox if (!count) { 401441b62c1edb986827154768d89bbac0ba779984fHarvey Harrison dbg("%s - write request of 0 bytes", __func__); 4023fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo return count; 4033fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo } 4043fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo 4053fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo temp = serial_buf_put(priv->tx_buf, source, count); 4063fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo 4073fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo aircable_send(port); 4083fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo 4093fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo if (count > AIRCABLE_BUF_SIZE) 4103fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo count = AIRCABLE_BUF_SIZE; 4113fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo 4123fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo return count; 4133fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo 4143fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo} 4153fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo 4167d12e780e003f93433d49ce78cfedf4b4c52adc5David Howellsstatic void aircable_write_bulk_callback(struct urb *urb) 4173fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo{ 4183fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo struct usb_serial_port *port = urb->context; 4191373dbbca55503804ed191ba3914af68ce01e4bcGreg Kroah-Hartman int status = urb->status; 4203fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo int result; 4213fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo 422441b62c1edb986827154768d89bbac0ba779984fHarvey Harrison dbg("%s - urb status: %d", __func__ , status); 4233fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo 4243fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo /* This has been taken from cypress_m8.c cypress_write_int_callback */ 4251373dbbca55503804ed191ba3914af68ce01e4bcGreg Kroah-Hartman switch (status) { 426c4d0f8cbca3a97900f85b082064a63c7a5928bd7Alan Cox case 0: 427c4d0f8cbca3a97900f85b082064a63c7a5928bd7Alan Cox /* success */ 428c4d0f8cbca3a97900f85b082064a63c7a5928bd7Alan Cox break; 429c4d0f8cbca3a97900f85b082064a63c7a5928bd7Alan Cox case -ECONNRESET: 430c4d0f8cbca3a97900f85b082064a63c7a5928bd7Alan Cox case -ENOENT: 431c4d0f8cbca3a97900f85b082064a63c7a5928bd7Alan Cox case -ESHUTDOWN: 432c4d0f8cbca3a97900f85b082064a63c7a5928bd7Alan Cox /* this urb is terminated, clean up */ 433c4d0f8cbca3a97900f85b082064a63c7a5928bd7Alan Cox dbg("%s - urb shutting down with status: %d", 434c4d0f8cbca3a97900f85b082064a63c7a5928bd7Alan Cox __func__, status); 435c4d0f8cbca3a97900f85b082064a63c7a5928bd7Alan Cox port->write_urb_busy = 0; 436c4d0f8cbca3a97900f85b082064a63c7a5928bd7Alan Cox return; 437c4d0f8cbca3a97900f85b082064a63c7a5928bd7Alan Cox default: 438c4d0f8cbca3a97900f85b082064a63c7a5928bd7Alan Cox /* error in the urb, so we have to resubmit it */ 439c4d0f8cbca3a97900f85b082064a63c7a5928bd7Alan Cox dbg("%s - Overflow in write", __func__); 440c4d0f8cbca3a97900f85b082064a63c7a5928bd7Alan Cox dbg("%s - nonzero write bulk status received: %d", 441c4d0f8cbca3a97900f85b082064a63c7a5928bd7Alan Cox __func__, status); 442c4d0f8cbca3a97900f85b082064a63c7a5928bd7Alan Cox port->write_urb->transfer_buffer_length = 1; 443c4d0f8cbca3a97900f85b082064a63c7a5928bd7Alan Cox port->write_urb->dev = port->serial->dev; 444c4d0f8cbca3a97900f85b082064a63c7a5928bd7Alan Cox result = usb_submit_urb(port->write_urb, GFP_ATOMIC); 445c4d0f8cbca3a97900f85b082064a63c7a5928bd7Alan Cox if (result) 446c4d0f8cbca3a97900f85b082064a63c7a5928bd7Alan Cox dev_err(&urb->dev->dev, 447c4d0f8cbca3a97900f85b082064a63c7a5928bd7Alan Cox "%s - failed resubmitting write urb, error %d\n", 448c4d0f8cbca3a97900f85b082064a63c7a5928bd7Alan Cox __func__, result); 449c4d0f8cbca3a97900f85b082064a63c7a5928bd7Alan Cox else 4503fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo return; 4513fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo } 4523fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo 4533fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo port->write_urb_busy = 0; 4543fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo 4553fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo aircable_send(port); 4563fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo} 4573fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo 4587d12e780e003f93433d49ce78cfedf4b4c52adc5David Howellsstatic void aircable_read_bulk_callback(struct urb *urb) 4593fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo{ 4603fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo struct usb_serial_port *port = urb->context; 4613fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo struct aircable_private *priv = usb_get_serial_port_data(port); 4623fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo struct tty_struct *tty; 4633fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo unsigned long no_packages, remaining, package_length, i; 4643fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo int result, shift = 0; 4653fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo unsigned char *temp; 4661373dbbca55503804ed191ba3914af68ce01e4bcGreg Kroah-Hartman int status = urb->status; 4673fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo 468441b62c1edb986827154768d89bbac0ba779984fHarvey Harrison dbg("%s - port %d", __func__, port->number); 4693fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo 4701373dbbca55503804ed191ba3914af68ce01e4bcGreg Kroah-Hartman if (status) { 471441b62c1edb986827154768d89bbac0ba779984fHarvey Harrison dbg("%s - urb status = %d", __func__, status); 4721373dbbca55503804ed191ba3914af68ce01e4bcGreg Kroah-Hartman if (status == -EPROTO) { 4733fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo dbg("%s - caught -EPROTO, resubmitting the urb", 474441b62c1edb986827154768d89bbac0ba779984fHarvey Harrison __func__); 4753fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo usb_fill_bulk_urb(port->read_urb, port->serial->dev, 476c4d0f8cbca3a97900f85b082064a63c7a5928bd7Alan Cox usb_rcvbulkpipe(port->serial->dev, 477c4d0f8cbca3a97900f85b082064a63c7a5928bd7Alan Cox port->bulk_in_endpointAddress), 478c4d0f8cbca3a97900f85b082064a63c7a5928bd7Alan Cox port->read_urb->transfer_buffer, 479c4d0f8cbca3a97900f85b082064a63c7a5928bd7Alan Cox port->read_urb->transfer_buffer_length, 480c4d0f8cbca3a97900f85b082064a63c7a5928bd7Alan Cox aircable_read_bulk_callback, port); 4813fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo 4823fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo result = usb_submit_urb(urb, GFP_ATOMIC); 4833fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo if (result) 4843fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo dev_err(&urb->dev->dev, 4853fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo "%s - failed resubmitting read urb, error %d\n", 486441b62c1edb986827154768d89bbac0ba779984fHarvey Harrison __func__, result); 4873fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo return; 4883fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo } 489441b62c1edb986827154768d89bbac0ba779984fHarvey Harrison dbg("%s - unable to handle the error, exiting.", __func__); 4903fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo return; 4913fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo } 4923fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo 493441b62c1edb986827154768d89bbac0ba779984fHarvey Harrison usb_serial_debug_data(debug, &port->dev, __func__, 494c4d0f8cbca3a97900f85b082064a63c7a5928bd7Alan Cox urb->actual_length, urb->transfer_buffer); 4953fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo 4964a90f09b20f4622dcbff1f0e1e6bae1704f8ad8cAlan Cox tty = tty_port_tty_get(&port->port); 4973fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo if (tty && urb->actual_length) { 4983fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo if (urb->actual_length <= 2) { 4993fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo /* This is an incomplete package */ 5003fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo serial_buf_put(priv->rx_buf, urb->transfer_buffer, 5013fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo urb->actual_length); 5023fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo } else { 5033fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo temp = urb->transfer_buffer; 5043fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo if (temp[0] == RX_HEADER_0) 5053fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo shift = HCI_HEADER_LENGTH; 5063fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo 5073fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo remaining = urb->actual_length; 5083fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo no_packages = urb->actual_length / (HCI_COMPLETE_FRAME); 5093fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo 5103fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo if (urb->actual_length % HCI_COMPLETE_FRAME != 0) 511c4d0f8cbca3a97900f85b082064a63c7a5928bd7Alan Cox no_packages++; 5123fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo 513c4d0f8cbca3a97900f85b082064a63c7a5928bd7Alan Cox for (i = 0; i < no_packages; i++) { 5143fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo if (remaining > (HCI_COMPLETE_FRAME)) 5153fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo package_length = HCI_COMPLETE_FRAME; 5163fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo else 5173fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo package_length = remaining; 5183fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo remaining -= package_length; 5193fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo 5203fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo serial_buf_put(priv->rx_buf, 5213fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo urb->transfer_buffer + shift + 5223fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo (HCI_COMPLETE_FRAME) * (i), 5233fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo package_length - shift); 5243fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo } 5253fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo } 526c4028958b6ecad064b1a6303a6a5906d4fe48d73David Howells aircable_read(&priv->rx_work); 5273fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo } 5284a90f09b20f4622dcbff1f0e1e6bae1704f8ad8cAlan Cox tty_kref_put(tty); 5293fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo 5301f87158e44e79e62c8250f278c225ce4ab695f4bAlan Stern /* Schedule the next read */ 5311f87158e44e79e62c8250f278c225ce4ab695f4bAlan Stern usb_fill_bulk_urb(port->read_urb, port->serial->dev, 5321f87158e44e79e62c8250f278c225ce4ab695f4bAlan Stern usb_rcvbulkpipe(port->serial->dev, 5331f87158e44e79e62c8250f278c225ce4ab695f4bAlan Stern port->bulk_in_endpointAddress), 5341f87158e44e79e62c8250f278c225ce4ab695f4bAlan Stern port->read_urb->transfer_buffer, 5351f87158e44e79e62c8250f278c225ce4ab695f4bAlan Stern port->read_urb->transfer_buffer_length, 5361f87158e44e79e62c8250f278c225ce4ab695f4bAlan Stern aircable_read_bulk_callback, port); 5371f87158e44e79e62c8250f278c225ce4ab695f4bAlan Stern 5381f87158e44e79e62c8250f278c225ce4ab695f4bAlan Stern result = usb_submit_urb(urb, GFP_ATOMIC); 5391f87158e44e79e62c8250f278c225ce4ab695f4bAlan Stern if (result && result != -EPERM) 5401f87158e44e79e62c8250f278c225ce4ab695f4bAlan Stern dev_err(&urb->dev->dev, 5411f87158e44e79e62c8250f278c225ce4ab695f4bAlan Stern "%s - failed resubmitting read urb, error %d\n", 5421f87158e44e79e62c8250f278c225ce4ab695f4bAlan Stern __func__, result); 5433fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo} 5443fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo 5453fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo/* Based on ftdi_sio.c throttle */ 54695da310e66ee8090119596c70ca8432e57f9a97fAlan Coxstatic void aircable_throttle(struct tty_struct *tty) 5473fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo{ 54895da310e66ee8090119596c70ca8432e57f9a97fAlan Cox struct usb_serial_port *port = tty->driver_data; 5493fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo struct aircable_private *priv = usb_get_serial_port_data(port); 5503fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo 551441b62c1edb986827154768d89bbac0ba779984fHarvey Harrison dbg("%s - port %d", __func__, port->number); 5523fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo 553638325154572ba2113a18669fe3b299caa2dabd9Oliver Neukum spin_lock_irq(&priv->rx_lock); 5543fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo priv->rx_flags |= THROTTLED; 555638325154572ba2113a18669fe3b299caa2dabd9Oliver Neukum spin_unlock_irq(&priv->rx_lock); 5563fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo} 5573fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo 5583fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo/* Based on ftdi_sio.c unthrottle */ 55995da310e66ee8090119596c70ca8432e57f9a97fAlan Coxstatic void aircable_unthrottle(struct tty_struct *tty) 5603fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo{ 56195da310e66ee8090119596c70ca8432e57f9a97fAlan Cox struct usb_serial_port *port = tty->driver_data; 5623fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo struct aircable_private *priv = usb_get_serial_port_data(port); 5633fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo int actually_throttled; 5643fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo 565441b62c1edb986827154768d89bbac0ba779984fHarvey Harrison dbg("%s - port %d", __func__, port->number); 5663fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo 567638325154572ba2113a18669fe3b299caa2dabd9Oliver Neukum spin_lock_irq(&priv->rx_lock); 5683fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo actually_throttled = priv->rx_flags & ACTUALLY_THROTTLED; 5693fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo priv->rx_flags &= ~(THROTTLED | ACTUALLY_THROTTLED); 570638325154572ba2113a18669fe3b299caa2dabd9Oliver Neukum spin_unlock_irq(&priv->rx_lock); 5713fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo 5723fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo if (actually_throttled) 5733fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo schedule_work(&priv->rx_work); 5743fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo} 5753fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo 576d9b1b787736852f462dbf277b3ca708cbbf693aeJohannes Hölzlstatic struct usb_driver aircable_driver = { 577d9b1b787736852f462dbf277b3ca708cbbf693aeJohannes Hölzl .name = "aircable", 578d9b1b787736852f462dbf277b3ca708cbbf693aeJohannes Hölzl .probe = usb_serial_probe, 579d9b1b787736852f462dbf277b3ca708cbbf693aeJohannes Hölzl .disconnect = usb_serial_disconnect, 580d9b1b787736852f462dbf277b3ca708cbbf693aeJohannes Hölzl .id_table = id_table, 581d9b1b787736852f462dbf277b3ca708cbbf693aeJohannes Hölzl .no_dynamic_id = 1, 582d9b1b787736852f462dbf277b3ca708cbbf693aeJohannes Hölzl}; 583d9b1b787736852f462dbf277b3ca708cbbf693aeJohannes Hölzl 5843fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjostatic struct usb_serial_driver aircable_device = { 58552d67f0b5c1b1827cd842020d40bdde4f7d04f59Johannes Hölzl .driver = { 58652d67f0b5c1b1827cd842020d40bdde4f7d04f59Johannes Hölzl .owner = THIS_MODULE, 58752d67f0b5c1b1827cd842020d40bdde4f7d04f59Johannes Hölzl .name = "aircable", 58852d67f0b5c1b1827cd842020d40bdde4f7d04f59Johannes Hölzl }, 589d9b1b787736852f462dbf277b3ca708cbbf693aeJohannes Hölzl .usb_driver = &aircable_driver, 5903fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo .id_table = id_table, 5913fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo .num_ports = 1, 5923fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo .attach = aircable_attach, 5933fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo .probe = aircable_probe, 594f9c99bb8b3a1ec81af68d484a551307326c2e933Alan Stern .release = aircable_release, 5953fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo .write = aircable_write, 5963fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo .write_room = aircable_write_room, 5973fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo .write_bulk_callback = aircable_write_bulk_callback, 5983fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo .read_bulk_callback = aircable_read_bulk_callback, 5993fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo .throttle = aircable_throttle, 6003fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo .unthrottle = aircable_unthrottle, 6013fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo}; 6023fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo 603c4d0f8cbca3a97900f85b082064a63c7a5928bd7Alan Coxstatic int __init aircable_init(void) 6043fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo{ 6053fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo int retval; 6063fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo retval = usb_serial_register(&aircable_device); 6073fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo if (retval) 6083fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo goto failed_serial_register; 6093fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo retval = usb_register(&aircable_driver); 6103fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo if (retval) 6113fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo goto failed_usb_register; 6123fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo return 0; 6133fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo 6143fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjofailed_usb_register: 61578c8fb3717cdff35ad118e17ac7495d0cf21a61fDave Young usb_serial_deregister(&aircable_device); 61678c8fb3717cdff35ad118e17ac7495d0cf21a61fDave Youngfailed_serial_register: 6173fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo return retval; 6183fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo} 6193fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo 620c4d0f8cbca3a97900f85b082064a63c7a5928bd7Alan Coxstatic void __exit aircable_exit(void) 6213fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo{ 6223fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo usb_deregister(&aircable_driver); 6233fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo usb_serial_deregister(&aircable_device); 6243fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo} 6253fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo 6263fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco NaranjoMODULE_AUTHOR(DRIVER_AUTHOR); 6273fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco NaranjoMODULE_DESCRIPTION(DRIVER_DESC); 6283fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco NaranjoMODULE_VERSION(DRIVER_VERSION); 6293fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco NaranjoMODULE_LICENSE("GPL"); 6303fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo 6313fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjomodule_init(aircable_init); 6323fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjomodule_exit(aircable_exit); 6333fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjo 6343fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco Naranjomodule_param(debug, bool, S_IRUGO | S_IWUSR); 6353fe70ba2272c123cf38e4c577bf220f8bcf25366Manuel Francisco NaranjoMODULE_PARM_DESC(debug, "Debug enabled or not"); 636