Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * USB Cypress M8 driver |
| 3 | * |
| 4 | * Copyright (C) 2004 |
Alan Cox | 813a224 | 2008-07-22 11:10:36 +0100 | [diff] [blame] | 5 | * Lonnie Mendez (dignome@gmail.com) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 6 | * Copyright (C) 2003,2004 |
| 7 | * Neil Whelchel (koyama@firstlight.net) |
| 8 | * |
| 9 | * This program is free software; you can redistribute it and/or modify |
| 10 | * it under the terms of the GNU General Public License as published by |
| 11 | * the Free Software Foundation; either version 2 of the License, or |
| 12 | * (at your option) any later version. |
| 13 | * |
Alan Cox | 813a224 | 2008-07-22 11:10:36 +0100 | [diff] [blame] | 14 | * See Documentation/usb/usb-serial.txt for more information on using this |
| 15 | * driver |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 16 | * |
| 17 | * See http://geocities.com/i0xox0i for information on this driver and the |
| 18 | * earthmate usb device. |
| 19 | * |
Lonnie Mendez | 3cb4a4f | 2005-05-03 17:02:20 -0500 | [diff] [blame] | 20 | * Lonnie Mendez <dignome@gmail.com> |
| 21 | * 4-29-2005 |
Alan Cox | 813a224 | 2008-07-22 11:10:36 +0100 | [diff] [blame] | 22 | * Fixed problem where setting or retreiving the serial config would fail |
| 23 | * with EPIPE. Removed CRTS toggling so the driver behaves more like |
| 24 | * other usbserial adapters. Issued new interval of 1ms instead of the |
| 25 | * default 10ms. As a result, transfer speed has been substantially |
| 26 | * increased from avg. 850bps to avg. 3300bps. initial termios has also |
| 27 | * been modified. Cleaned up code and formatting issues so it is more |
| 28 | * readable. Replaced the C++ style comments. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 29 | * |
| 30 | * Lonnie Mendez <dignome@gmail.com> |
| 31 | * 12-15-2004 |
| 32 | * Incorporated write buffering from pl2303 driver. Fixed bug with line |
| 33 | * handling so both lines are raised in cypress_open. (was dropping rts) |
| 34 | * Various code cleanups made as well along with other misc bug fixes. |
| 35 | * |
| 36 | * Lonnie Mendez <dignome@gmail.com> |
| 37 | * 04-10-2004 |
| 38 | * Driver modified to support dynamic line settings. Various improvments |
| 39 | * and features. |
| 40 | * |
| 41 | * Neil Whelchel |
| 42 | * 10-2003 |
| 43 | * Driver first released. |
| 44 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 45 | */ |
| 46 | |
Alan Cox | 813a224 | 2008-07-22 11:10:36 +0100 | [diff] [blame] | 47 | /* Thanks to Neil Whelchel for writing the first cypress m8 implementation |
| 48 | for linux. */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 49 | /* Thanks to cypress for providing references for the hid reports. */ |
| 50 | /* Thanks to Jiang Zhang for providing links and for general help. */ |
Alan Cox | 813a224 | 2008-07-22 11:10:36 +0100 | [diff] [blame] | 51 | /* Code originates and was built up from ftdi_sio, belkin, pl2303 and others.*/ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 52 | |
| 53 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 54 | #include <linux/kernel.h> |
| 55 | #include <linux/errno.h> |
| 56 | #include <linux/init.h> |
| 57 | #include <linux/slab.h> |
| 58 | #include <linux/tty.h> |
| 59 | #include <linux/tty_driver.h> |
| 60 | #include <linux/tty_flip.h> |
| 61 | #include <linux/module.h> |
| 62 | #include <linux/moduleparam.h> |
| 63 | #include <linux/spinlock.h> |
| 64 | #include <linux/usb.h> |
Greg Kroah-Hartman | a969888 | 2006-07-11 21:22:58 -0700 | [diff] [blame] | 65 | #include <linux/usb/serial.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 66 | #include <linux/serial.h> |
Johan Hovold | 117fb8d | 2010-05-16 20:33:50 +0200 | [diff] [blame] | 67 | #include <linux/kfifo.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 68 | #include <linux/delay.h> |
Alan Cox | 813a224 | 2008-07-22 11:10:36 +0100 | [diff] [blame] | 69 | #include <linux/uaccess.h> |
Johan Hovold | 0f2c2d7 | 2009-12-31 16:48:01 +0100 | [diff] [blame] | 70 | #include <asm/unaligned.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 71 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 72 | #include "cypress_m8.h" |
| 73 | |
| 74 | |
Mike Frysinger | 64319dd | 2009-12-18 16:33:01 -0500 | [diff] [blame] | 75 | static int debug; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 76 | static int stats; |
Lonnie Mendez | 3cb4a4f | 2005-05-03 17:02:20 -0500 | [diff] [blame] | 77 | static int interval; |
Mike Frysinger | c312659 | 2009-12-18 16:33:03 -0500 | [diff] [blame] | 78 | static int unstable_bauds; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 79 | |
| 80 | /* |
| 81 | * Version Information |
| 82 | */ |
Johan Hovold | 117fb8d | 2010-05-16 20:33:50 +0200 | [diff] [blame] | 83 | #define DRIVER_VERSION "v1.10" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 84 | #define DRIVER_AUTHOR "Lonnie Mendez <dignome@gmail.com>, Neil Whelchel <koyama@firstlight.net>" |
| 85 | #define DRIVER_DESC "Cypress USB to Serial Driver" |
| 86 | |
| 87 | /* write buffer size defines */ |
| 88 | #define CYPRESS_BUF_SIZE 1024 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 89 | |
Németh Márton | 7d40d7e | 2010-01-10 15:34:24 +0100 | [diff] [blame] | 90 | static const struct usb_device_id id_table_earthmate[] = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 91 | { USB_DEVICE(VENDOR_ID_DELORME, PRODUCT_ID_EARTHMATEUSB) }, |
Lonnie Mendez | 25b6f08 | 2005-05-10 17:09:52 -0500 | [diff] [blame] | 92 | { USB_DEVICE(VENDOR_ID_DELORME, PRODUCT_ID_EARTHMATEUSB_LT20) }, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 93 | { } /* Terminating entry */ |
| 94 | }; |
| 95 | |
Németh Márton | 7d40d7e | 2010-01-10 15:34:24 +0100 | [diff] [blame] | 96 | static const struct usb_device_id id_table_cyphidcomrs232[] = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 97 | { USB_DEVICE(VENDOR_ID_CYPRESS, PRODUCT_ID_CYPHIDCOM) }, |
Dmitry Shapin | 6f6f06e | 2008-03-04 15:25:10 -0800 | [diff] [blame] | 98 | { USB_DEVICE(VENDOR_ID_POWERCOM, PRODUCT_ID_UPS) }, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 99 | { } /* Terminating entry */ |
| 100 | }; |
| 101 | |
Németh Márton | 7d40d7e | 2010-01-10 15:34:24 +0100 | [diff] [blame] | 102 | static const struct usb_device_id id_table_nokiaca42v2[] = { |
Lonnie Mendez | a5c44e2 | 2006-03-01 10:45:24 -0600 | [diff] [blame] | 103 | { USB_DEVICE(VENDOR_ID_DAZZLE, PRODUCT_ID_CA42) }, |
| 104 | { } /* Terminating entry */ |
| 105 | }; |
| 106 | |
Németh Márton | 7d40d7e | 2010-01-10 15:34:24 +0100 | [diff] [blame] | 107 | static const struct usb_device_id id_table_combined[] = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 108 | { USB_DEVICE(VENDOR_ID_DELORME, PRODUCT_ID_EARTHMATEUSB) }, |
Lonnie Mendez | 25b6f08 | 2005-05-10 17:09:52 -0500 | [diff] [blame] | 109 | { USB_DEVICE(VENDOR_ID_DELORME, PRODUCT_ID_EARTHMATEUSB_LT20) }, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 110 | { USB_DEVICE(VENDOR_ID_CYPRESS, PRODUCT_ID_CYPHIDCOM) }, |
Dmitry Shapin | 6f6f06e | 2008-03-04 15:25:10 -0800 | [diff] [blame] | 111 | { USB_DEVICE(VENDOR_ID_POWERCOM, PRODUCT_ID_UPS) }, |
Lonnie Mendez | a5c44e2 | 2006-03-01 10:45:24 -0600 | [diff] [blame] | 112 | { USB_DEVICE(VENDOR_ID_DAZZLE, PRODUCT_ID_CA42) }, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 113 | { } /* Terminating entry */ |
| 114 | }; |
| 115 | |
Alan Cox | 813a224 | 2008-07-22 11:10:36 +0100 | [diff] [blame] | 116 | MODULE_DEVICE_TABLE(usb, id_table_combined); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 117 | |
| 118 | static struct usb_driver cypress_driver = { |
| 119 | .name = "cypress", |
| 120 | .probe = usb_serial_probe, |
| 121 | .disconnect = usb_serial_disconnect, |
| 122 | .id_table = id_table_combined, |
Greg Kroah-Hartman | ba9dc65 | 2005-11-16 13:41:28 -0800 | [diff] [blame] | 123 | .no_dynamic_id = 1, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 124 | }; |
| 125 | |
Mike Isely | 3416eaa | 2008-02-10 20:23:19 -0600 | [diff] [blame] | 126 | enum packet_format { |
| 127 | packet_format_1, /* b0:status, b1:payload count */ |
| 128 | packet_format_2 /* b0[7:3]:status, b0[2:0]:payload count */ |
| 129 | }; |
| 130 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 131 | struct cypress_private { |
| 132 | spinlock_t lock; /* private lock */ |
| 133 | int chiptype; /* identifier of device, for quirks/etc */ |
| 134 | int bytes_in; /* used for statistics */ |
| 135 | int bytes_out; /* used for statistics */ |
| 136 | int cmd_count; /* used for statistics */ |
| 137 | int cmd_ctrl; /* always set this to 1 before issuing a command */ |
Johan Hovold | 117fb8d | 2010-05-16 20:33:50 +0200 | [diff] [blame] | 138 | struct kfifo write_fifo; /* write fifo */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 139 | int write_urb_in_use; /* write urb in use indicator */ |
Mike Isely | 0257fa9 | 2006-08-29 22:06:59 -0500 | [diff] [blame] | 140 | int write_urb_interval; /* interval to use for write urb */ |
| 141 | int read_urb_interval; /* interval to use for read urb */ |
Mike Isely | 78aef51 | 2006-08-29 22:07:11 -0500 | [diff] [blame] | 142 | int comm_is_ok; /* true if communication is (still) ok */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 143 | int termios_initialized; |
| 144 | __u8 line_control; /* holds dtr / rts value */ |
| 145 | __u8 current_status; /* received from last read - info on dsr,cts,cd,ri,etc */ |
| 146 | __u8 current_config; /* stores the current configuration byte */ |
| 147 | __u8 rx_flags; /* throttling - used from whiteheat/ftdi_sio */ |
Mike Isely | 3416eaa | 2008-02-10 20:23:19 -0600 | [diff] [blame] | 148 | enum packet_format pkt_fmt; /* format to use for packet send / receive */ |
Mike Isely | 3d6aa32 | 2008-02-10 20:23:24 -0600 | [diff] [blame] | 149 | int get_cfg_unsafe; /* If true, the CYPRESS_GET_CONFIG is unsafe */ |
Alan Cox | 813a224 | 2008-07-22 11:10:36 +0100 | [diff] [blame] | 150 | int baud_rate; /* stores current baud rate in |
| 151 | integer form */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 152 | int isthrottled; /* if throttled, discard reads */ |
| 153 | wait_queue_head_t delta_msr_wait; /* used for TIOCMIWAIT */ |
| 154 | char prev_status, diff_status; /* used for TIOCMIWAIT */ |
Daniel Mack | 3ad2f3fb | 2010-02-03 08:01:28 +0800 | [diff] [blame] | 155 | /* we pass a pointer to this as the argument sent to |
Alan Cox | 813a224 | 2008-07-22 11:10:36 +0100 | [diff] [blame] | 156 | cypress_set_termios old_termios */ |
Alan Cox | 606d099 | 2006-12-08 02:38:45 -0800 | [diff] [blame] | 157 | struct ktermios tmp_termios; /* stores the old termios settings */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 158 | }; |
| 159 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 160 | /* function prototypes for the Cypress USB to serial device */ |
Alan Cox | 813a224 | 2008-07-22 11:10:36 +0100 | [diff] [blame] | 161 | static int cypress_earthmate_startup(struct usb_serial *serial); |
| 162 | static int cypress_hidcom_startup(struct usb_serial *serial); |
| 163 | static int cypress_ca42v2_startup(struct usb_serial *serial); |
Alan Stern | f9c99bb | 2009-06-02 11:53:55 -0400 | [diff] [blame] | 164 | static void cypress_release(struct usb_serial *serial); |
Alan Cox | a509a7e | 2009-09-19 13:13:26 -0700 | [diff] [blame] | 165 | static int cypress_open(struct tty_struct *tty, struct usb_serial_port *port); |
Alan Cox | 335f851 | 2009-06-11 12:26:29 +0100 | [diff] [blame] | 166 | static void cypress_close(struct usb_serial_port *port); |
| 167 | static void cypress_dtr_rts(struct usb_serial_port *port, int on); |
Alan Cox | 813a224 | 2008-07-22 11:10:36 +0100 | [diff] [blame] | 168 | static int cypress_write(struct tty_struct *tty, struct usb_serial_port *port, |
| 169 | const unsigned char *buf, int count); |
| 170 | static void cypress_send(struct usb_serial_port *port); |
| 171 | static int cypress_write_room(struct tty_struct *tty); |
| 172 | static int cypress_ioctl(struct tty_struct *tty, struct file *file, |
| 173 | unsigned int cmd, unsigned long arg); |
| 174 | static void cypress_set_termios(struct tty_struct *tty, |
| 175 | struct usb_serial_port *port, struct ktermios *old); |
| 176 | static int cypress_tiocmget(struct tty_struct *tty, struct file *file); |
| 177 | static int cypress_tiocmset(struct tty_struct *tty, struct file *file, |
| 178 | unsigned int set, unsigned int clear); |
| 179 | static int cypress_chars_in_buffer(struct tty_struct *tty); |
| 180 | static void cypress_throttle(struct tty_struct *tty); |
| 181 | static void cypress_unthrottle(struct tty_struct *tty); |
| 182 | static void cypress_set_dead(struct usb_serial_port *port); |
| 183 | static void cypress_read_int_callback(struct urb *urb); |
| 184 | static void cypress_write_int_callback(struct urb *urb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 185 | |
Greg Kroah-Hartman | ea65370 | 2005-06-20 21:15:16 -0700 | [diff] [blame] | 186 | static struct usb_serial_driver cypress_earthmate_device = { |
Greg Kroah-Hartman | 18fcac3 | 2005-06-20 21:15:16 -0700 | [diff] [blame] | 187 | .driver = { |
| 188 | .owner = THIS_MODULE, |
Greg Kroah-Hartman | 269bda1 | 2005-06-20 21:15:16 -0700 | [diff] [blame] | 189 | .name = "earthmate", |
Greg Kroah-Hartman | 18fcac3 | 2005-06-20 21:15:16 -0700 | [diff] [blame] | 190 | }, |
Greg Kroah-Hartman | 269bda1 | 2005-06-20 21:15:16 -0700 | [diff] [blame] | 191 | .description = "DeLorme Earthmate USB", |
Johannes Hölzl | d9b1b78 | 2006-12-17 21:50:24 +0100 | [diff] [blame] | 192 | .usb_driver = &cypress_driver, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 193 | .id_table = id_table_earthmate, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 194 | .num_ports = 1, |
| 195 | .attach = cypress_earthmate_startup, |
Alan Stern | f9c99bb | 2009-06-02 11:53:55 -0400 | [diff] [blame] | 196 | .release = cypress_release, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 197 | .open = cypress_open, |
| 198 | .close = cypress_close, |
Alan Cox | 335f851 | 2009-06-11 12:26:29 +0100 | [diff] [blame] | 199 | .dtr_rts = cypress_dtr_rts, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 200 | .write = cypress_write, |
| 201 | .write_room = cypress_write_room, |
| 202 | .ioctl = cypress_ioctl, |
| 203 | .set_termios = cypress_set_termios, |
| 204 | .tiocmget = cypress_tiocmget, |
| 205 | .tiocmset = cypress_tiocmset, |
| 206 | .chars_in_buffer = cypress_chars_in_buffer, |
| 207 | .throttle = cypress_throttle, |
| 208 | .unthrottle = cypress_unthrottle, |
| 209 | .read_int_callback = cypress_read_int_callback, |
| 210 | .write_int_callback = cypress_write_int_callback, |
| 211 | }; |
| 212 | |
Greg Kroah-Hartman | ea65370 | 2005-06-20 21:15:16 -0700 | [diff] [blame] | 213 | static struct usb_serial_driver cypress_hidcom_device = { |
Greg Kroah-Hartman | 18fcac3 | 2005-06-20 21:15:16 -0700 | [diff] [blame] | 214 | .driver = { |
| 215 | .owner = THIS_MODULE, |
Greg Kroah-Hartman | 269bda1 | 2005-06-20 21:15:16 -0700 | [diff] [blame] | 216 | .name = "cyphidcom", |
Greg Kroah-Hartman | 18fcac3 | 2005-06-20 21:15:16 -0700 | [diff] [blame] | 217 | }, |
Greg Kroah-Hartman | 269bda1 | 2005-06-20 21:15:16 -0700 | [diff] [blame] | 218 | .description = "HID->COM RS232 Adapter", |
Johannes Hölzl | d9b1b78 | 2006-12-17 21:50:24 +0100 | [diff] [blame] | 219 | .usb_driver = &cypress_driver, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 220 | .id_table = id_table_cyphidcomrs232, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 221 | .num_ports = 1, |
| 222 | .attach = cypress_hidcom_startup, |
Alan Stern | f9c99bb | 2009-06-02 11:53:55 -0400 | [diff] [blame] | 223 | .release = cypress_release, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 224 | .open = cypress_open, |
| 225 | .close = cypress_close, |
Alan Cox | 335f851 | 2009-06-11 12:26:29 +0100 | [diff] [blame] | 226 | .dtr_rts = cypress_dtr_rts, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 227 | .write = cypress_write, |
| 228 | .write_room = cypress_write_room, |
| 229 | .ioctl = cypress_ioctl, |
| 230 | .set_termios = cypress_set_termios, |
| 231 | .tiocmget = cypress_tiocmget, |
| 232 | .tiocmset = cypress_tiocmset, |
| 233 | .chars_in_buffer = cypress_chars_in_buffer, |
| 234 | .throttle = cypress_throttle, |
| 235 | .unthrottle = cypress_unthrottle, |
| 236 | .read_int_callback = cypress_read_int_callback, |
| 237 | .write_int_callback = cypress_write_int_callback, |
| 238 | }; |
| 239 | |
Lonnie Mendez | a5c44e2 | 2006-03-01 10:45:24 -0600 | [diff] [blame] | 240 | static struct usb_serial_driver cypress_ca42v2_device = { |
| 241 | .driver = { |
| 242 | .owner = THIS_MODULE, |
Alan Cox | 813a224 | 2008-07-22 11:10:36 +0100 | [diff] [blame] | 243 | .name = "nokiaca42v2", |
Lonnie Mendez | a5c44e2 | 2006-03-01 10:45:24 -0600 | [diff] [blame] | 244 | }, |
| 245 | .description = "Nokia CA-42 V2 Adapter", |
Johannes Hölzl | d9b1b78 | 2006-12-17 21:50:24 +0100 | [diff] [blame] | 246 | .usb_driver = &cypress_driver, |
Lonnie Mendez | a5c44e2 | 2006-03-01 10:45:24 -0600 | [diff] [blame] | 247 | .id_table = id_table_nokiaca42v2, |
Lonnie Mendez | a5c44e2 | 2006-03-01 10:45:24 -0600 | [diff] [blame] | 248 | .num_ports = 1, |
| 249 | .attach = cypress_ca42v2_startup, |
Alan Stern | f9c99bb | 2009-06-02 11:53:55 -0400 | [diff] [blame] | 250 | .release = cypress_release, |
Lonnie Mendez | a5c44e2 | 2006-03-01 10:45:24 -0600 | [diff] [blame] | 251 | .open = cypress_open, |
| 252 | .close = cypress_close, |
Alan Cox | 335f851 | 2009-06-11 12:26:29 +0100 | [diff] [blame] | 253 | .dtr_rts = cypress_dtr_rts, |
Lonnie Mendez | a5c44e2 | 2006-03-01 10:45:24 -0600 | [diff] [blame] | 254 | .write = cypress_write, |
| 255 | .write_room = cypress_write_room, |
| 256 | .ioctl = cypress_ioctl, |
| 257 | .set_termios = cypress_set_termios, |
| 258 | .tiocmget = cypress_tiocmget, |
| 259 | .tiocmset = cypress_tiocmset, |
| 260 | .chars_in_buffer = cypress_chars_in_buffer, |
| 261 | .throttle = cypress_throttle, |
| 262 | .unthrottle = cypress_unthrottle, |
| 263 | .read_int_callback = cypress_read_int_callback, |
| 264 | .write_int_callback = cypress_write_int_callback, |
| 265 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 266 | |
| 267 | /***************************************************************************** |
| 268 | * Cypress serial helper functions |
| 269 | *****************************************************************************/ |
| 270 | |
| 271 | |
Alan Cox | 8873aaa | 2008-03-10 21:59:28 +0000 | [diff] [blame] | 272 | static int analyze_baud_rate(struct usb_serial_port *port, speed_t new_rate) |
Mike Isely | 92983c2 | 2008-02-10 20:23:32 -0600 | [diff] [blame] | 273 | { |
Mike Isely | 92983c2 | 2008-02-10 20:23:32 -0600 | [diff] [blame] | 274 | struct cypress_private *priv; |
| 275 | priv = usb_get_serial_port_data(port); |
| 276 | |
Mike Frysinger | c312659 | 2009-12-18 16:33:03 -0500 | [diff] [blame] | 277 | if (unstable_bauds) |
| 278 | return new_rate; |
| 279 | |
Mike Isely | 92983c2 | 2008-02-10 20:23:32 -0600 | [diff] [blame] | 280 | /* |
| 281 | * The general purpose firmware for the Cypress M8 allows for |
| 282 | * a maximum speed of 57600bps (I have no idea whether DeLorme |
| 283 | * chose to use the general purpose firmware or not), if you |
| 284 | * need to modify this speed setting for your own project |
| 285 | * please add your own chiptype and modify the code likewise. |
| 286 | * The Cypress HID->COM device will work successfully up to |
| 287 | * 115200bps (but the actual throughput is around 3kBps). |
| 288 | */ |
Mike Isely | 92983c2 | 2008-02-10 20:23:32 -0600 | [diff] [blame] | 289 | if (port->serial->dev->speed == USB_SPEED_LOW) { |
| 290 | /* |
| 291 | * Mike Isely <isely@pobox.com> 2-Feb-2008: The |
| 292 | * Cypress app note that describes this mechanism |
| 293 | * states the the low-speed part can't handle more |
| 294 | * than 800 bytes/sec, in which case 4800 baud is the |
| 295 | * safest speed for a part like that. |
| 296 | */ |
| 297 | if (new_rate > 4800) { |
| 298 | dbg("%s - failed setting baud rate, device incapable " |
| 299 | "speed %d", __func__, new_rate); |
| 300 | return -1; |
| 301 | } |
| 302 | } |
| 303 | switch (priv->chiptype) { |
| 304 | case CT_EARTHMATE: |
| 305 | if (new_rate <= 600) { |
| 306 | /* 300 and 600 baud rates are supported under |
| 307 | * the generic firmware, but are not used with |
| 308 | * NMEA and SiRF protocols */ |
| 309 | dbg("%s - failed setting baud rate, unsupported speed " |
| 310 | "of %d on Earthmate GPS", __func__, new_rate); |
| 311 | return -1; |
| 312 | } |
| 313 | break; |
| 314 | default: |
| 315 | break; |
| 316 | } |
| 317 | return new_rate; |
| 318 | } |
| 319 | |
| 320 | |
Steven Cole | 093cf72 | 2005-05-03 19:07:24 -0600 | [diff] [blame] | 321 | /* This function can either set or retrieve the current serial line settings */ |
Alan Cox | 813a224 | 2008-07-22 11:10:36 +0100 | [diff] [blame] | 322 | static int cypress_serial_control(struct tty_struct *tty, |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 323 | struct usb_serial_port *port, speed_t baud_rate, int data_bits, |
| 324 | int stop_bits, int parity_enable, int parity_type, int reset, |
| 325 | int cypress_request_type) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 326 | { |
Lonnie Mendez | 3cb4a4f | 2005-05-03 17:02:20 -0500 | [diff] [blame] | 327 | int new_baudrate = 0, retval = 0, tries = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 328 | struct cypress_private *priv; |
Johan Hovold | 0954644 | 2009-12-28 23:01:48 +0100 | [diff] [blame] | 329 | u8 *feature_buffer; |
| 330 | const unsigned int feature_len = 5; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 331 | unsigned long flags; |
| 332 | |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 333 | dbg("%s", __func__); |
Alan Cox | 813a224 | 2008-07-22 11:10:36 +0100 | [diff] [blame] | 334 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 335 | priv = usb_get_serial_port_data(port); |
| 336 | |
Mike Isely | 78aef51 | 2006-08-29 22:07:11 -0500 | [diff] [blame] | 337 | if (!priv->comm_is_ok) |
| 338 | return -ENODEV; |
| 339 | |
Johan Hovold | 0954644 | 2009-12-28 23:01:48 +0100 | [diff] [blame] | 340 | feature_buffer = kcalloc(feature_len, sizeof(u8), GFP_KERNEL); |
| 341 | if (!feature_buffer) |
| 342 | return -ENOMEM; |
| 343 | |
Alan Cox | 813a224 | 2008-07-22 11:10:36 +0100 | [diff] [blame] | 344 | switch (cypress_request_type) { |
| 345 | case CYPRESS_SET_CONFIG: |
Alan Cox | 813a224 | 2008-07-22 11:10:36 +0100 | [diff] [blame] | 346 | /* 0 means 'Hang up' so doesn't change the true bit rate */ |
Mike Frysinger | 2805eb1 | 2009-12-18 16:33:02 -0500 | [diff] [blame] | 347 | new_baudrate = priv->baud_rate; |
| 348 | if (baud_rate && baud_rate != priv->baud_rate) { |
Alan Cox | 813a224 | 2008-07-22 11:10:36 +0100 | [diff] [blame] | 349 | dbg("%s - baud rate is changing", __func__); |
| 350 | retval = analyze_baud_rate(port, baud_rate); |
Mike Frysinger | 2805eb1 | 2009-12-18 16:33:02 -0500 | [diff] [blame] | 351 | if (retval >= 0) { |
Alan Cox | 813a224 | 2008-07-22 11:10:36 +0100 | [diff] [blame] | 352 | new_baudrate = retval; |
| 353 | dbg("%s - New baud rate set to %d", |
| 354 | __func__, new_baudrate); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 355 | } |
Alan Cox | 813a224 | 2008-07-22 11:10:36 +0100 | [diff] [blame] | 356 | } |
| 357 | dbg("%s - baud rate is being sent as %d", |
| 358 | __func__, new_baudrate); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 359 | |
Alan Cox | 813a224 | 2008-07-22 11:10:36 +0100 | [diff] [blame] | 360 | /* fill the feature_buffer with new configuration */ |
Johan Hovold | 0f2c2d7 | 2009-12-31 16:48:01 +0100 | [diff] [blame] | 361 | put_unaligned_le32(new_baudrate, feature_buffer); |
Alan Cox | 813a224 | 2008-07-22 11:10:36 +0100 | [diff] [blame] | 362 | feature_buffer[4] |= data_bits; /* assign data bits in 2 bit space ( max 3 ) */ |
| 363 | /* 1 bit gap */ |
| 364 | feature_buffer[4] |= (stop_bits << 3); /* assign stop bits in 1 bit space */ |
| 365 | feature_buffer[4] |= (parity_enable << 4); /* assign parity flag in 1 bit space */ |
| 366 | feature_buffer[4] |= (parity_type << 5); /* assign parity type in 1 bit space */ |
| 367 | /* 1 bit gap */ |
| 368 | feature_buffer[4] |= (reset << 7); /* assign reset at end of byte, 1 bit space */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 369 | |
Alan Cox | 813a224 | 2008-07-22 11:10:36 +0100 | [diff] [blame] | 370 | dbg("%s - device is being sent this feature report:", |
| 371 | __func__); |
| 372 | dbg("%s - %02X - %02X - %02X - %02X - %02X", __func__, |
| 373 | feature_buffer[0], feature_buffer[1], |
| 374 | feature_buffer[2], feature_buffer[3], |
| 375 | feature_buffer[4]); |
Lonnie Mendez | 3cb4a4f | 2005-05-03 17:02:20 -0500 | [diff] [blame] | 376 | |
Alan Cox | 813a224 | 2008-07-22 11:10:36 +0100 | [diff] [blame] | 377 | do { |
| 378 | retval = usb_control_msg(port->serial->dev, |
| 379 | usb_sndctrlpipe(port->serial->dev, 0), |
| 380 | HID_REQ_SET_REPORT, |
| 381 | USB_DIR_OUT | USB_RECIP_INTERFACE | USB_TYPE_CLASS, |
| 382 | 0x0300, 0, feature_buffer, |
Johan Hovold | 0954644 | 2009-12-28 23:01:48 +0100 | [diff] [blame] | 383 | feature_len, 500); |
Lonnie Mendez | 3cb4a4f | 2005-05-03 17:02:20 -0500 | [diff] [blame] | 384 | |
Alan Cox | 813a224 | 2008-07-22 11:10:36 +0100 | [diff] [blame] | 385 | if (tries++ >= 3) |
| 386 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 387 | |
Johan Hovold | 0954644 | 2009-12-28 23:01:48 +0100 | [diff] [blame] | 388 | } while (retval != feature_len && |
Alan Cox | 813a224 | 2008-07-22 11:10:36 +0100 | [diff] [blame] | 389 | retval != -ENODEV); |
Mike Isely | 9307554 | 2008-02-10 20:23:14 -0600 | [diff] [blame] | 390 | |
Johan Hovold | 0954644 | 2009-12-28 23:01:48 +0100 | [diff] [blame] | 391 | if (retval != feature_len) { |
Greg Kroah-Hartman | 194343d | 2008-08-20 16:56:34 -0700 | [diff] [blame] | 392 | dev_err(&port->dev, "%s - failed sending serial " |
| 393 | "line settings - %d\n", __func__, retval); |
Alan Cox | 813a224 | 2008-07-22 11:10:36 +0100 | [diff] [blame] | 394 | cypress_set_dead(port); |
| 395 | } else { |
| 396 | spin_lock_irqsave(&priv->lock, flags); |
| 397 | priv->baud_rate = new_baudrate; |
| 398 | priv->current_config = feature_buffer[4]; |
| 399 | spin_unlock_irqrestore(&priv->lock, flags); |
| 400 | /* If we asked for a speed change encode it */ |
| 401 | if (baud_rate) |
| 402 | tty_encode_baud_rate(tty, |
| 403 | new_baudrate, new_baudrate); |
| 404 | } |
| 405 | break; |
| 406 | case CYPRESS_GET_CONFIG: |
| 407 | if (priv->get_cfg_unsafe) { |
| 408 | /* Not implemented for this device, |
| 409 | and if we try to do it we're likely |
| 410 | to crash the hardware. */ |
Johan Hovold | 0954644 | 2009-12-28 23:01:48 +0100 | [diff] [blame] | 411 | retval = -ENOTTY; |
| 412 | goto out; |
Alan Cox | 813a224 | 2008-07-22 11:10:36 +0100 | [diff] [blame] | 413 | } |
| 414 | dbg("%s - retreiving serial line settings", __func__); |
Alan Cox | 813a224 | 2008-07-22 11:10:36 +0100 | [diff] [blame] | 415 | do { |
| 416 | retval = usb_control_msg(port->serial->dev, |
| 417 | usb_rcvctrlpipe(port->serial->dev, 0), |
| 418 | HID_REQ_GET_REPORT, |
| 419 | USB_DIR_IN | USB_RECIP_INTERFACE | USB_TYPE_CLASS, |
| 420 | 0x0300, 0, feature_buffer, |
Johan Hovold | 0954644 | 2009-12-28 23:01:48 +0100 | [diff] [blame] | 421 | feature_len, 500); |
Lonnie Mendez | 3cb4a4f | 2005-05-03 17:02:20 -0500 | [diff] [blame] | 422 | |
Alan Cox | 813a224 | 2008-07-22 11:10:36 +0100 | [diff] [blame] | 423 | if (tries++ >= 3) |
| 424 | break; |
Johan Hovold | 0954644 | 2009-12-28 23:01:48 +0100 | [diff] [blame] | 425 | } while (retval != feature_len |
Alan Cox | 813a224 | 2008-07-22 11:10:36 +0100 | [diff] [blame] | 426 | && retval != -ENODEV); |
Lonnie Mendez | 3cb4a4f | 2005-05-03 17:02:20 -0500 | [diff] [blame] | 427 | |
Johan Hovold | 0954644 | 2009-12-28 23:01:48 +0100 | [diff] [blame] | 428 | if (retval != feature_len) { |
Greg Kroah-Hartman | 194343d | 2008-08-20 16:56:34 -0700 | [diff] [blame] | 429 | dev_err(&port->dev, "%s - failed to retrieve serial " |
| 430 | "line settings - %d\n", __func__, retval); |
Alan Cox | 813a224 | 2008-07-22 11:10:36 +0100 | [diff] [blame] | 431 | cypress_set_dead(port); |
Johan Hovold | 0954644 | 2009-12-28 23:01:48 +0100 | [diff] [blame] | 432 | goto out; |
Alan Cox | 813a224 | 2008-07-22 11:10:36 +0100 | [diff] [blame] | 433 | } else { |
| 434 | spin_lock_irqsave(&priv->lock, flags); |
| 435 | /* store the config in one byte, and later |
| 436 | use bit masks to check values */ |
| 437 | priv->current_config = feature_buffer[4]; |
Johan Hovold | 0f2c2d7 | 2009-12-31 16:48:01 +0100 | [diff] [blame] | 438 | priv->baud_rate = get_unaligned_le32(feature_buffer); |
Alan Cox | 813a224 | 2008-07-22 11:10:36 +0100 | [diff] [blame] | 439 | spin_unlock_irqrestore(&priv->lock, flags); |
| 440 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 441 | } |
Lonnie Mendez | 3cb4a4f | 2005-05-03 17:02:20 -0500 | [diff] [blame] | 442 | spin_lock_irqsave(&priv->lock, flags); |
| 443 | ++priv->cmd_count; |
| 444 | spin_unlock_irqrestore(&priv->lock, flags); |
Johan Hovold | 0954644 | 2009-12-28 23:01:48 +0100 | [diff] [blame] | 445 | out: |
| 446 | kfree(feature_buffer); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 447 | return retval; |
| 448 | } /* cypress_serial_control */ |
| 449 | |
| 450 | |
Mike Isely | 78aef51 | 2006-08-29 22:07:11 -0500 | [diff] [blame] | 451 | static void cypress_set_dead(struct usb_serial_port *port) |
| 452 | { |
| 453 | struct cypress_private *priv = usb_get_serial_port_data(port); |
| 454 | unsigned long flags; |
| 455 | |
| 456 | spin_lock_irqsave(&priv->lock, flags); |
| 457 | if (!priv->comm_is_ok) { |
| 458 | spin_unlock_irqrestore(&priv->lock, flags); |
| 459 | return; |
| 460 | } |
| 461 | priv->comm_is_ok = 0; |
| 462 | spin_unlock_irqrestore(&priv->lock, flags); |
| 463 | |
Greg Kroah-Hartman | 194343d | 2008-08-20 16:56:34 -0700 | [diff] [blame] | 464 | dev_err(&port->dev, "cypress_m8 suspending failing port %d - " |
| 465 | "interval might be too short\n", port->number); |
Mike Isely | 78aef51 | 2006-08-29 22:07:11 -0500 | [diff] [blame] | 466 | } |
| 467 | |
| 468 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 469 | /***************************************************************************** |
| 470 | * Cypress serial driver functions |
| 471 | *****************************************************************************/ |
| 472 | |
| 473 | |
Alan Cox | 813a224 | 2008-07-22 11:10:36 +0100 | [diff] [blame] | 474 | static int generic_startup(struct usb_serial *serial) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 475 | { |
| 476 | struct cypress_private *priv; |
Mike Isely | 0257fa9 | 2006-08-29 22:06:59 -0500 | [diff] [blame] | 477 | struct usb_serial_port *port = serial->port[0]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 478 | |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 479 | dbg("%s - port %d", __func__, port->number); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 480 | |
Alan Cox | 813a224 | 2008-07-22 11:10:36 +0100 | [diff] [blame] | 481 | priv = kzalloc(sizeof(struct cypress_private), GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 482 | if (!priv) |
| 483 | return -ENOMEM; |
| 484 | |
Mike Isely | 78aef51 | 2006-08-29 22:07:11 -0500 | [diff] [blame] | 485 | priv->comm_is_ok = !0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 486 | spin_lock_init(&priv->lock); |
Johan Hovold | 117fb8d | 2010-05-16 20:33:50 +0200 | [diff] [blame] | 487 | if (kfifo_alloc(&priv->write_fifo, CYPRESS_BUF_SIZE, GFP_KERNEL)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 488 | kfree(priv); |
| 489 | return -ENOMEM; |
| 490 | } |
| 491 | init_waitqueue_head(&priv->delta_msr_wait); |
Alan Cox | 813a224 | 2008-07-22 11:10:36 +0100 | [diff] [blame] | 492 | |
| 493 | usb_reset_configuration(serial->dev); |
| 494 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 495 | priv->cmd_ctrl = 0; |
| 496 | priv->line_control = 0; |
| 497 | priv->termios_initialized = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 498 | priv->rx_flags = 0; |
Mike Isely | 3416eaa | 2008-02-10 20:23:19 -0600 | [diff] [blame] | 499 | /* Default packet format setting is determined by packet size. |
| 500 | Anything with a size larger then 9 must have a separate |
| 501 | count field since the 3 bit count field is otherwise too |
| 502 | small. Otherwise we can use the slightly more compact |
| 503 | format. This is in accordance with the cypress_m8 serial |
| 504 | converter app note. */ |
Alan Cox | 813a224 | 2008-07-22 11:10:36 +0100 | [diff] [blame] | 505 | if (port->interrupt_out_size > 9) |
Mike Isely | 3416eaa | 2008-02-10 20:23:19 -0600 | [diff] [blame] | 506 | priv->pkt_fmt = packet_format_1; |
Alan Cox | 813a224 | 2008-07-22 11:10:36 +0100 | [diff] [blame] | 507 | else |
Mike Isely | 3416eaa | 2008-02-10 20:23:19 -0600 | [diff] [blame] | 508 | priv->pkt_fmt = packet_format_2; |
Alan Cox | 813a224 | 2008-07-22 11:10:36 +0100 | [diff] [blame] | 509 | |
Mike Isely | 0257fa9 | 2006-08-29 22:06:59 -0500 | [diff] [blame] | 510 | if (interval > 0) { |
| 511 | priv->write_urb_interval = interval; |
| 512 | priv->read_urb_interval = interval; |
| 513 | dbg("%s - port %d read & write intervals forced to %d", |
Alan Cox | 813a224 | 2008-07-22 11:10:36 +0100 | [diff] [blame] | 514 | __func__, port->number, interval); |
Mike Isely | 0257fa9 | 2006-08-29 22:06:59 -0500 | [diff] [blame] | 515 | } else { |
| 516 | priv->write_urb_interval = port->interrupt_out_urb->interval; |
| 517 | priv->read_urb_interval = port->interrupt_in_urb->interval; |
| 518 | dbg("%s - port %d intervals: read=%d write=%d", |
Alan Cox | 813a224 | 2008-07-22 11:10:36 +0100 | [diff] [blame] | 519 | __func__, port->number, |
| 520 | priv->read_urb_interval, priv->write_urb_interval); |
Mike Isely | 0257fa9 | 2006-08-29 22:06:59 -0500 | [diff] [blame] | 521 | } |
| 522 | usb_set_serial_port_data(port, priv); |
Alan Cox | 813a224 | 2008-07-22 11:10:36 +0100 | [diff] [blame] | 523 | |
Lonnie Mendez | b9db07f | 2005-07-12 17:21:31 -0500 | [diff] [blame] | 524 | return 0; |
| 525 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 526 | |
| 527 | |
Alan Cox | 813a224 | 2008-07-22 11:10:36 +0100 | [diff] [blame] | 528 | static int cypress_earthmate_startup(struct usb_serial *serial) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 529 | { |
| 530 | struct cypress_private *priv; |
Mike Isely | 3d6aa32 | 2008-02-10 20:23:24 -0600 | [diff] [blame] | 531 | struct usb_serial_port *port = serial->port[0]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 532 | |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 533 | dbg("%s", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 534 | |
| 535 | if (generic_startup(serial)) { |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 536 | dbg("%s - Failed setting up port %d", __func__, |
Mike Isely | 3d6aa32 | 2008-02-10 20:23:24 -0600 | [diff] [blame] | 537 | port->number); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 538 | return 1; |
| 539 | } |
| 540 | |
Mike Isely | 3d6aa32 | 2008-02-10 20:23:24 -0600 | [diff] [blame] | 541 | priv = usb_get_serial_port_data(port); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 542 | priv->chiptype = CT_EARTHMATE; |
Mike Isely | 3416eaa | 2008-02-10 20:23:19 -0600 | [diff] [blame] | 543 | /* All Earthmate devices use the separated-count packet |
| 544 | format! Idiotic. */ |
| 545 | priv->pkt_fmt = packet_format_1; |
Alan Cox | 813a224 | 2008-07-22 11:10:36 +0100 | [diff] [blame] | 546 | if (serial->dev->descriptor.idProduct != |
| 547 | cpu_to_le16(PRODUCT_ID_EARTHMATEUSB)) { |
Mike Isely | 3d6aa32 | 2008-02-10 20:23:24 -0600 | [diff] [blame] | 548 | /* The old original USB Earthmate seemed able to |
| 549 | handle GET_CONFIG requests; everything they've |
| 550 | produced since that time crashes if this command is |
| 551 | attempted :-( */ |
| 552 | dbg("%s - Marking this device as unsafe for GET_CONFIG " |
| 553 | "commands", __func__); |
| 554 | priv->get_cfg_unsafe = !0; |
| 555 | } |
Lonnie Mendez | b9db07f | 2005-07-12 17:21:31 -0500 | [diff] [blame] | 556 | |
| 557 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 558 | } /* cypress_earthmate_startup */ |
| 559 | |
| 560 | |
Alan Cox | 813a224 | 2008-07-22 11:10:36 +0100 | [diff] [blame] | 561 | static int cypress_hidcom_startup(struct usb_serial *serial) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 562 | { |
| 563 | struct cypress_private *priv; |
| 564 | |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 565 | dbg("%s", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 566 | |
| 567 | if (generic_startup(serial)) { |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 568 | dbg("%s - Failed setting up port %d", __func__, |
Lonnie Mendez | b9db07f | 2005-07-12 17:21:31 -0500 | [diff] [blame] | 569 | serial->port[0]->number); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 570 | return 1; |
| 571 | } |
| 572 | |
| 573 | priv = usb_get_serial_port_data(serial->port[0]); |
| 574 | priv->chiptype = CT_CYPHIDCOM; |
Alan Cox | 813a224 | 2008-07-22 11:10:36 +0100 | [diff] [blame] | 575 | |
Lonnie Mendez | b9db07f | 2005-07-12 17:21:31 -0500 | [diff] [blame] | 576 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 577 | } /* cypress_hidcom_startup */ |
| 578 | |
| 579 | |
Alan Cox | 813a224 | 2008-07-22 11:10:36 +0100 | [diff] [blame] | 580 | static int cypress_ca42v2_startup(struct usb_serial *serial) |
Lonnie Mendez | a5c44e2 | 2006-03-01 10:45:24 -0600 | [diff] [blame] | 581 | { |
| 582 | struct cypress_private *priv; |
| 583 | |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 584 | dbg("%s", __func__); |
Lonnie Mendez | a5c44e2 | 2006-03-01 10:45:24 -0600 | [diff] [blame] | 585 | |
| 586 | if (generic_startup(serial)) { |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 587 | dbg("%s - Failed setting up port %d", __func__, |
Lonnie Mendez | a5c44e2 | 2006-03-01 10:45:24 -0600 | [diff] [blame] | 588 | serial->port[0]->number); |
| 589 | return 1; |
| 590 | } |
| 591 | |
| 592 | priv = usb_get_serial_port_data(serial->port[0]); |
| 593 | priv->chiptype = CT_CA42V2; |
| 594 | |
| 595 | return 0; |
| 596 | } /* cypress_ca42v2_startup */ |
| 597 | |
| 598 | |
Alan Stern | f9c99bb | 2009-06-02 11:53:55 -0400 | [diff] [blame] | 599 | static void cypress_release(struct usb_serial *serial) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 600 | { |
| 601 | struct cypress_private *priv; |
| 602 | |
Alan Cox | 813a224 | 2008-07-22 11:10:36 +0100 | [diff] [blame] | 603 | dbg("%s - port %d", __func__, serial->port[0]->number); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 604 | |
| 605 | /* all open ports are closed at this point */ |
| 606 | |
| 607 | priv = usb_get_serial_port_data(serial->port[0]); |
| 608 | |
| 609 | if (priv) { |
Johan Hovold | 117fb8d | 2010-05-16 20:33:50 +0200 | [diff] [blame] | 610 | kfifo_free(&priv->write_fifo); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 611 | kfree(priv); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 612 | } |
| 613 | } |
| 614 | |
| 615 | |
Alan Cox | a509a7e | 2009-09-19 13:13:26 -0700 | [diff] [blame] | 616 | static int cypress_open(struct tty_struct *tty, struct usb_serial_port *port) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 617 | { |
| 618 | struct cypress_private *priv = usb_get_serial_port_data(port); |
| 619 | struct usb_serial *serial = port->serial; |
| 620 | unsigned long flags; |
| 621 | int result = 0; |
| 622 | |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 623 | dbg("%s - port %d", __func__, port->number); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 624 | |
Mike Isely | 78aef51 | 2006-08-29 22:07:11 -0500 | [diff] [blame] | 625 | if (!priv->comm_is_ok) |
| 626 | return -EIO; |
| 627 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 628 | /* clear halts before open */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 629 | usb_clear_halt(serial->dev, 0x81); |
| 630 | usb_clear_halt(serial->dev, 0x02); |
| 631 | |
| 632 | spin_lock_irqsave(&priv->lock, flags); |
| 633 | /* reset read/write statistics */ |
| 634 | priv->bytes_in = 0; |
| 635 | priv->bytes_out = 0; |
| 636 | priv->cmd_count = 0; |
| 637 | priv->rx_flags = 0; |
| 638 | spin_unlock_irqrestore(&priv->lock, flags); |
| 639 | |
Alan Cox | 335f851 | 2009-06-11 12:26:29 +0100 | [diff] [blame] | 640 | /* Set termios */ |
Alan Cox | fe1ae7f | 2009-09-19 13:13:33 -0700 | [diff] [blame] | 641 | cypress_send(port); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 642 | |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 643 | if (tty) |
| 644 | cypress_set_termios(tty, port, &priv->tmp_termios); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 645 | |
| 646 | /* setup the port and start reading from the device */ |
Alan Cox | 813a224 | 2008-07-22 11:10:36 +0100 | [diff] [blame] | 647 | if (!port->interrupt_in_urb) { |
Greg Kroah-Hartman | 194343d | 2008-08-20 16:56:34 -0700 | [diff] [blame] | 648 | dev_err(&port->dev, "%s - interrupt_in_urb is empty!\n", |
| 649 | __func__); |
Alan Cox | 813a224 | 2008-07-22 11:10:36 +0100 | [diff] [blame] | 650 | return -1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 651 | } |
| 652 | |
| 653 | usb_fill_int_urb(port->interrupt_in_urb, serial->dev, |
| 654 | usb_rcvintpipe(serial->dev, port->interrupt_in_endpointAddress), |
Alan Cox | 813a224 | 2008-07-22 11:10:36 +0100 | [diff] [blame] | 655 | port->interrupt_in_urb->transfer_buffer, |
| 656 | port->interrupt_in_urb->transfer_buffer_length, |
Mike Isely | 0257fa9 | 2006-08-29 22:06:59 -0500 | [diff] [blame] | 657 | cypress_read_int_callback, port, priv->read_urb_interval); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 658 | result = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL); |
| 659 | |
Alan Cox | 813a224 | 2008-07-22 11:10:36 +0100 | [diff] [blame] | 660 | if (result) { |
| 661 | dev_err(&port->dev, |
| 662 | "%s - failed submitting read urb, error %d\n", |
| 663 | __func__, result); |
Mike Isely | 78aef51 | 2006-08-29 22:07:11 -0500 | [diff] [blame] | 664 | cypress_set_dead(port); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 665 | } |
Alan Cox | 335f851 | 2009-06-11 12:26:29 +0100 | [diff] [blame] | 666 | port->port.drain_delay = 256; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 667 | return result; |
| 668 | } /* cypress_open */ |
| 669 | |
Alan Cox | 335f851 | 2009-06-11 12:26:29 +0100 | [diff] [blame] | 670 | static void cypress_dtr_rts(struct usb_serial_port *port, int on) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 671 | { |
| 672 | struct cypress_private *priv = usb_get_serial_port_data(port); |
Alan Cox | 335f851 | 2009-06-11 12:26:29 +0100 | [diff] [blame] | 673 | /* drop dtr and rts */ |
Alan Cox | 335f851 | 2009-06-11 12:26:29 +0100 | [diff] [blame] | 674 | spin_lock_irq(&priv->lock); |
| 675 | if (on == 0) |
| 676 | priv->line_control = 0; |
| 677 | else |
| 678 | priv->line_control = CONTROL_DTR | CONTROL_RTS; |
| 679 | priv->cmd_ctrl = 1; |
| 680 | spin_unlock_irq(&priv->lock); |
| 681 | cypress_write(NULL, port, NULL, 0); |
| 682 | } |
| 683 | |
| 684 | static void cypress_close(struct usb_serial_port *port) |
| 685 | { |
| 686 | struct cypress_private *priv = usb_get_serial_port_data(port); |
Johan Hovold | 117fb8d | 2010-05-16 20:33:50 +0200 | [diff] [blame] | 687 | unsigned long flags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 688 | |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 689 | dbg("%s - port %d", __func__, port->number); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 690 | |
Oliver Neukum | 9e3b1d8 | 2008-01-22 15:54:54 +0100 | [diff] [blame] | 691 | /* writing is potentially harmful, lock must be taken */ |
| 692 | mutex_lock(&port->serial->disc_mutex); |
| 693 | if (port->serial->disconnected) { |
| 694 | mutex_unlock(&port->serial->disc_mutex); |
| 695 | return; |
| 696 | } |
Johan Hovold | 117fb8d | 2010-05-16 20:33:50 +0200 | [diff] [blame] | 697 | spin_lock_irqsave(&priv->lock, flags); |
| 698 | kfifo_reset_out(&priv->write_fifo); |
| 699 | spin_unlock_irqrestore(&priv->lock, flags); |
| 700 | |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 701 | dbg("%s - stopping urbs", __func__); |
Alan Cox | 813a224 | 2008-07-22 11:10:36 +0100 | [diff] [blame] | 702 | usb_kill_urb(port->interrupt_in_urb); |
| 703 | usb_kill_urb(port->interrupt_out_urb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 704 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 705 | if (stats) |
Alan Cox | 813a224 | 2008-07-22 11:10:36 +0100 | [diff] [blame] | 706 | dev_info(&port->dev, "Statistics: %d Bytes In | %d Bytes Out | %d Commands Issued\n", |
| 707 | priv->bytes_in, priv->bytes_out, priv->cmd_count); |
Oliver Neukum | 9e3b1d8 | 2008-01-22 15:54:54 +0100 | [diff] [blame] | 708 | mutex_unlock(&port->serial->disc_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 709 | } /* cypress_close */ |
| 710 | |
| 711 | |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 712 | static int cypress_write(struct tty_struct *tty, struct usb_serial_port *port, |
| 713 | const unsigned char *buf, int count) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 714 | { |
| 715 | struct cypress_private *priv = usb_get_serial_port_data(port); |
Alan Cox | 813a224 | 2008-07-22 11:10:36 +0100 | [diff] [blame] | 716 | |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 717 | dbg("%s - port %d, %d bytes", __func__, port->number, count); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 718 | |
| 719 | /* line control commands, which need to be executed immediately, |
| 720 | are not put into the buffer for obvious reasons. |
| 721 | */ |
| 722 | if (priv->cmd_ctrl) { |
| 723 | count = 0; |
| 724 | goto finish; |
| 725 | } |
Alan Cox | 813a224 | 2008-07-22 11:10:36 +0100 | [diff] [blame] | 726 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 727 | if (!count) |
| 728 | return count; |
Alan Cox | 813a224 | 2008-07-22 11:10:36 +0100 | [diff] [blame] | 729 | |
Johan Hovold | 117fb8d | 2010-05-16 20:33:50 +0200 | [diff] [blame] | 730 | count = kfifo_in_locked(&priv->write_fifo, buf, count, &priv->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 731 | |
| 732 | finish: |
| 733 | cypress_send(port); |
| 734 | |
| 735 | return count; |
| 736 | } /* cypress_write */ |
| 737 | |
| 738 | |
| 739 | static void cypress_send(struct usb_serial_port *port) |
| 740 | { |
| 741 | int count = 0, result, offset, actual_size; |
| 742 | struct cypress_private *priv = usb_get_serial_port_data(port); |
| 743 | unsigned long flags; |
Alan Cox | 813a224 | 2008-07-22 11:10:36 +0100 | [diff] [blame] | 744 | |
Mike Isely | 78aef51 | 2006-08-29 22:07:11 -0500 | [diff] [blame] | 745 | if (!priv->comm_is_ok) |
| 746 | return; |
| 747 | |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 748 | dbg("%s - port %d", __func__, port->number); |
Alan Cox | 813a224 | 2008-07-22 11:10:36 +0100 | [diff] [blame] | 749 | dbg("%s - interrupt out size is %d", __func__, |
| 750 | port->interrupt_out_size); |
| 751 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 752 | spin_lock_irqsave(&priv->lock, flags); |
| 753 | if (priv->write_urb_in_use) { |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 754 | dbg("%s - can't write, urb in use", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 755 | spin_unlock_irqrestore(&priv->lock, flags); |
| 756 | return; |
| 757 | } |
| 758 | spin_unlock_irqrestore(&priv->lock, flags); |
| 759 | |
| 760 | /* clear buffer */ |
Alan Cox | 813a224 | 2008-07-22 11:10:36 +0100 | [diff] [blame] | 761 | memset(port->interrupt_out_urb->transfer_buffer, 0, |
| 762 | port->interrupt_out_size); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 763 | |
| 764 | spin_lock_irqsave(&priv->lock, flags); |
Mike Isely | 3416eaa | 2008-02-10 20:23:19 -0600 | [diff] [blame] | 765 | switch (priv->pkt_fmt) { |
| 766 | default: |
| 767 | case packet_format_1: |
| 768 | /* this is for the CY7C64013... */ |
| 769 | offset = 2; |
| 770 | port->interrupt_out_buffer[0] = priv->line_control; |
| 771 | break; |
| 772 | case packet_format_2: |
| 773 | /* this is for the CY7C63743... */ |
| 774 | offset = 1; |
| 775 | port->interrupt_out_buffer[0] = priv->line_control; |
| 776 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 777 | } |
| 778 | |
| 779 | if (priv->line_control & CONTROL_RESET) |
| 780 | priv->line_control &= ~CONTROL_RESET; |
| 781 | |
| 782 | if (priv->cmd_ctrl) { |
| 783 | priv->cmd_count++; |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 784 | dbg("%s - line control command being issued", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 785 | spin_unlock_irqrestore(&priv->lock, flags); |
| 786 | goto send; |
| 787 | } else |
| 788 | spin_unlock_irqrestore(&priv->lock, flags); |
| 789 | |
Johan Hovold | 117fb8d | 2010-05-16 20:33:50 +0200 | [diff] [blame] | 790 | count = kfifo_out_locked(&priv->write_fifo, |
| 791 | &port->interrupt_out_buffer[offset], |
| 792 | port->interrupt_out_size - offset, |
| 793 | &priv->lock); |
Alan Cox | 813a224 | 2008-07-22 11:10:36 +0100 | [diff] [blame] | 794 | if (count == 0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 795 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 796 | |
Mike Isely | 3416eaa | 2008-02-10 20:23:19 -0600 | [diff] [blame] | 797 | switch (priv->pkt_fmt) { |
| 798 | default: |
| 799 | case packet_format_1: |
| 800 | port->interrupt_out_buffer[1] = count; |
| 801 | break; |
| 802 | case packet_format_2: |
| 803 | port->interrupt_out_buffer[0] |= count; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 804 | } |
| 805 | |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 806 | dbg("%s - count is %d", __func__, count); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 807 | |
| 808 | send: |
| 809 | spin_lock_irqsave(&priv->lock, flags); |
| 810 | priv->write_urb_in_use = 1; |
| 811 | spin_unlock_irqrestore(&priv->lock, flags); |
| 812 | |
| 813 | if (priv->cmd_ctrl) |
| 814 | actual_size = 1; |
| 815 | else |
Mike Isely | 3416eaa | 2008-02-10 20:23:19 -0600 | [diff] [blame] | 816 | actual_size = count + |
| 817 | (priv->pkt_fmt == packet_format_1 ? 2 : 1); |
| 818 | |
Alan Cox | 813a224 | 2008-07-22 11:10:36 +0100 | [diff] [blame] | 819 | usb_serial_debug_data(debug, &port->dev, __func__, |
| 820 | port->interrupt_out_size, |
| 821 | port->interrupt_out_urb->transfer_buffer); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 822 | |
Mike Isely | 9aa8dae | 2006-08-29 22:07:04 -0500 | [diff] [blame] | 823 | usb_fill_int_urb(port->interrupt_out_urb, port->serial->dev, |
| 824 | usb_sndintpipe(port->serial->dev, port->interrupt_out_endpointAddress), |
| 825 | port->interrupt_out_buffer, port->interrupt_out_size, |
| 826 | cypress_write_int_callback, port, priv->write_urb_interval); |
Alan Cox | 813a224 | 2008-07-22 11:10:36 +0100 | [diff] [blame] | 827 | result = usb_submit_urb(port->interrupt_out_urb, GFP_ATOMIC); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 828 | if (result) { |
Alan Cox | 813a224 | 2008-07-22 11:10:36 +0100 | [diff] [blame] | 829 | dev_err(&port->dev, |
| 830 | "%s - failed submitting write urb, error %d\n", |
| 831 | __func__, result); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 832 | priv->write_urb_in_use = 0; |
Mike Isely | 78aef51 | 2006-08-29 22:07:11 -0500 | [diff] [blame] | 833 | cypress_set_dead(port); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 834 | } |
| 835 | |
| 836 | spin_lock_irqsave(&priv->lock, flags); |
Alan Cox | 813a224 | 2008-07-22 11:10:36 +0100 | [diff] [blame] | 837 | if (priv->cmd_ctrl) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 838 | priv->cmd_ctrl = 0; |
Alan Cox | 813a224 | 2008-07-22 11:10:36 +0100 | [diff] [blame] | 839 | |
| 840 | /* do not count the line control and size bytes */ |
| 841 | priv->bytes_out += count; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 842 | spin_unlock_irqrestore(&priv->lock, flags); |
| 843 | |
Pete Zaitcev | cf2c748 | 2006-05-22 21:58:49 -0700 | [diff] [blame] | 844 | usb_serial_port_softint(port); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 845 | } /* cypress_send */ |
| 846 | |
| 847 | |
| 848 | /* returns how much space is available in the soft buffer */ |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 849 | static int cypress_write_room(struct tty_struct *tty) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 850 | { |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 851 | struct usb_serial_port *port = tty->driver_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 852 | struct cypress_private *priv = usb_get_serial_port_data(port); |
| 853 | int room = 0; |
| 854 | unsigned long flags; |
| 855 | |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 856 | dbg("%s - port %d", __func__, port->number); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 857 | |
| 858 | spin_lock_irqsave(&priv->lock, flags); |
Johan Hovold | 117fb8d | 2010-05-16 20:33:50 +0200 | [diff] [blame] | 859 | room = kfifo_avail(&priv->write_fifo); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 860 | spin_unlock_irqrestore(&priv->lock, flags); |
| 861 | |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 862 | dbg("%s - returns %d", __func__, room); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 863 | return room; |
| 864 | } |
| 865 | |
| 866 | |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 867 | static int cypress_tiocmget(struct tty_struct *tty, struct file *file) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 868 | { |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 869 | struct usb_serial_port *port = tty->driver_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 870 | struct cypress_private *priv = usb_get_serial_port_data(port); |
| 871 | __u8 status, control; |
| 872 | unsigned int result = 0; |
| 873 | unsigned long flags; |
Alan Cox | 813a224 | 2008-07-22 11:10:36 +0100 | [diff] [blame] | 874 | |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 875 | dbg("%s - port %d", __func__, port->number); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 876 | |
| 877 | spin_lock_irqsave(&priv->lock, flags); |
| 878 | control = priv->line_control; |
| 879 | status = priv->current_status; |
| 880 | spin_unlock_irqrestore(&priv->lock, flags); |
| 881 | |
| 882 | result = ((control & CONTROL_DTR) ? TIOCM_DTR : 0) |
| 883 | | ((control & CONTROL_RTS) ? TIOCM_RTS : 0) |
| 884 | | ((status & UART_CTS) ? TIOCM_CTS : 0) |
| 885 | | ((status & UART_DSR) ? TIOCM_DSR : 0) |
| 886 | | ((status & UART_RI) ? TIOCM_RI : 0) |
| 887 | | ((status & UART_CD) ? TIOCM_CD : 0); |
| 888 | |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 889 | dbg("%s - result = %x", __func__, result); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 890 | |
| 891 | return result; |
| 892 | } |
| 893 | |
| 894 | |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 895 | static int cypress_tiocmset(struct tty_struct *tty, struct file *file, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 896 | unsigned int set, unsigned int clear) |
| 897 | { |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 898 | struct usb_serial_port *port = tty->driver_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 899 | struct cypress_private *priv = usb_get_serial_port_data(port); |
| 900 | unsigned long flags; |
Alan Cox | 813a224 | 2008-07-22 11:10:36 +0100 | [diff] [blame] | 901 | |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 902 | dbg("%s - port %d", __func__, port->number); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 903 | |
| 904 | spin_lock_irqsave(&priv->lock, flags); |
| 905 | if (set & TIOCM_RTS) |
| 906 | priv->line_control |= CONTROL_RTS; |
| 907 | if (set & TIOCM_DTR) |
| 908 | priv->line_control |= CONTROL_DTR; |
| 909 | if (clear & TIOCM_RTS) |
| 910 | priv->line_control &= ~CONTROL_RTS; |
| 911 | if (clear & TIOCM_DTR) |
| 912 | priv->line_control &= ~CONTROL_DTR; |
Alan Cox | 8873aaa | 2008-03-10 21:59:28 +0000 | [diff] [blame] | 913 | priv->cmd_ctrl = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 914 | spin_unlock_irqrestore(&priv->lock, flags); |
| 915 | |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 916 | return cypress_write(tty, port, NULL, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 917 | } |
| 918 | |
| 919 | |
Alan Cox | 813a224 | 2008-07-22 11:10:36 +0100 | [diff] [blame] | 920 | static int cypress_ioctl(struct tty_struct *tty, struct file *file, |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 921 | unsigned int cmd, unsigned long arg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 922 | { |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 923 | struct usb_serial_port *port = tty->driver_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 924 | struct cypress_private *priv = usb_get_serial_port_data(port); |
| 925 | |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 926 | dbg("%s - port %d, cmd 0x%.4x", __func__, port->number, cmd); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 927 | |
| 928 | switch (cmd) { |
Alan Cox | 813a224 | 2008-07-22 11:10:36 +0100 | [diff] [blame] | 929 | /* This code comes from drivers/char/serial.c and ftdi_sio.c */ |
| 930 | case TIOCMIWAIT: |
| 931 | while (priv != NULL) { |
| 932 | interruptible_sleep_on(&priv->delta_msr_wait); |
| 933 | /* see if a signal did it */ |
| 934 | if (signal_pending(current)) |
| 935 | return -ERESTARTSYS; |
| 936 | else { |
| 937 | char diff = priv->diff_status; |
| 938 | if (diff == 0) |
| 939 | return -EIO; /* no change => error */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 940 | |
Alan Cox | 813a224 | 2008-07-22 11:10:36 +0100 | [diff] [blame] | 941 | /* consume all events */ |
| 942 | priv->diff_status = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 943 | |
Alan Cox | 813a224 | 2008-07-22 11:10:36 +0100 | [diff] [blame] | 944 | /* return 0 if caller wanted to know about |
| 945 | these bits */ |
| 946 | if (((arg & TIOCM_RNG) && (diff & UART_RI)) || |
| 947 | ((arg & TIOCM_DSR) && (diff & UART_DSR)) || |
| 948 | ((arg & TIOCM_CD) && (diff & UART_CD)) || |
| 949 | ((arg & TIOCM_CTS) && (diff & UART_CTS))) |
| 950 | return 0; |
| 951 | /* otherwise caller can't care less about what |
| 952 | * happened, and so we continue to wait for |
| 953 | * more events. |
| 954 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 955 | } |
Alan Cox | 813a224 | 2008-07-22 11:10:36 +0100 | [diff] [blame] | 956 | } |
| 957 | return 0; |
| 958 | default: |
| 959 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 960 | } |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 961 | dbg("%s - arg not supported - it was 0x%04x - check include/asm/ioctls.h", __func__, cmd); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 962 | return -ENOIOCTLCMD; |
| 963 | } /* cypress_ioctl */ |
| 964 | |
| 965 | |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 966 | static void cypress_set_termios(struct tty_struct *tty, |
| 967 | struct usb_serial_port *port, struct ktermios *old_termios) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 968 | { |
| 969 | struct cypress_private *priv = usb_get_serial_port_data(port); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 970 | int data_bits, stop_bits, parity_type, parity_enable; |
Alan Cox | 8873aaa | 2008-03-10 21:59:28 +0000 | [diff] [blame] | 971 | unsigned cflag, iflag; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 972 | unsigned long flags; |
| 973 | __u8 oldlines; |
Lonnie Mendez | 3cb4a4f | 2005-05-03 17:02:20 -0500 | [diff] [blame] | 974 | int linechange = 0; |
Lonnie Mendez | b9db07f | 2005-07-12 17:21:31 -0500 | [diff] [blame] | 975 | |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 976 | dbg("%s - port %d", __func__, port->number); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 977 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 978 | spin_lock_irqsave(&priv->lock, flags); |
Alan Cox | fe1ae7f | 2009-09-19 13:13:33 -0700 | [diff] [blame] | 979 | /* We can't clean this one up as we don't know the device type |
| 980 | early enough */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 981 | if (!priv->termios_initialized) { |
| 982 | if (priv->chiptype == CT_EARTHMATE) { |
| 983 | *(tty->termios) = tty_std_termios; |
Lonnie Mendez | b9db07f | 2005-07-12 17:21:31 -0500 | [diff] [blame] | 984 | tty->termios->c_cflag = B4800 | CS8 | CREAD | HUPCL | |
| 985 | CLOCAL; |
Alan Cox | 8873aaa | 2008-03-10 21:59:28 +0000 | [diff] [blame] | 986 | tty->termios->c_ispeed = 4800; |
| 987 | tty->termios->c_ospeed = 4800; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 988 | } else if (priv->chiptype == CT_CYPHIDCOM) { |
| 989 | *(tty->termios) = tty_std_termios; |
Lonnie Mendez | b9db07f | 2005-07-12 17:21:31 -0500 | [diff] [blame] | 990 | tty->termios->c_cflag = B9600 | CS8 | CREAD | HUPCL | |
| 991 | CLOCAL; |
Alan Cox | 8873aaa | 2008-03-10 21:59:28 +0000 | [diff] [blame] | 992 | tty->termios->c_ispeed = 9600; |
| 993 | tty->termios->c_ospeed = 9600; |
Lonnie Mendez | a5c44e2 | 2006-03-01 10:45:24 -0600 | [diff] [blame] | 994 | } else if (priv->chiptype == CT_CA42V2) { |
| 995 | *(tty->termios) = tty_std_termios; |
| 996 | tty->termios->c_cflag = B9600 | CS8 | CREAD | HUPCL | |
| 997 | CLOCAL; |
Alan Cox | 8873aaa | 2008-03-10 21:59:28 +0000 | [diff] [blame] | 998 | tty->termios->c_ispeed = 9600; |
| 999 | tty->termios->c_ospeed = 9600; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1000 | } |
| 1001 | priv->termios_initialized = 1; |
| 1002 | } |
| 1003 | spin_unlock_irqrestore(&priv->lock, flags); |
| 1004 | |
Alan Cox | 8873aaa | 2008-03-10 21:59:28 +0000 | [diff] [blame] | 1005 | /* Unsupported features need clearing */ |
| 1006 | tty->termios->c_cflag &= ~(CMSPAR|CRTSCTS); |
| 1007 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1008 | cflag = tty->termios->c_cflag; |
| 1009 | iflag = tty->termios->c_iflag; |
| 1010 | |
| 1011 | /* check if there are new settings */ |
| 1012 | if (old_termios) { |
Alan Cox | 8873aaa | 2008-03-10 21:59:28 +0000 | [diff] [blame] | 1013 | spin_lock_irqsave(&priv->lock, flags); |
| 1014 | priv->tmp_termios = *(tty->termios); |
| 1015 | spin_unlock_irqrestore(&priv->lock, flags); |
| 1016 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1017 | |
| 1018 | /* set number of data bits, parity, stop bits */ |
| 1019 | /* when parity is disabled the parity type bit is ignored */ |
| 1020 | |
Lonnie Mendez | b9db07f | 2005-07-12 17:21:31 -0500 | [diff] [blame] | 1021 | /* 1 means 2 stop bits, 0 means 1 stop bit */ |
| 1022 | stop_bits = cflag & CSTOPB ? 1 : 0; |
| 1023 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1024 | if (cflag & PARENB) { |
| 1025 | parity_enable = 1; |
Lonnie Mendez | b9db07f | 2005-07-12 17:21:31 -0500 | [diff] [blame] | 1026 | /* 1 means odd parity, 0 means even parity */ |
| 1027 | parity_type = cflag & PARODD ? 1 : 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1028 | } else |
| 1029 | parity_enable = parity_type = 0; |
| 1030 | |
Alan Cox | 7733682 | 2008-07-22 11:10:53 +0100 | [diff] [blame] | 1031 | switch (cflag & CSIZE) { |
| 1032 | case CS5: |
| 1033 | data_bits = 0; |
| 1034 | break; |
| 1035 | case CS6: |
| 1036 | data_bits = 1; |
| 1037 | break; |
| 1038 | case CS7: |
| 1039 | data_bits = 2; |
| 1040 | break; |
| 1041 | case CS8: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1042 | data_bits = 3; |
Alan Cox | 7733682 | 2008-07-22 11:10:53 +0100 | [diff] [blame] | 1043 | break; |
| 1044 | default: |
Greg Kroah-Hartman | 194343d | 2008-08-20 16:56:34 -0700 | [diff] [blame] | 1045 | dev_err(&port->dev, "%s - CSIZE was set, but not CS5-CS8\n", |
| 1046 | __func__); |
Alan Cox | 7733682 | 2008-07-22 11:10:53 +0100 | [diff] [blame] | 1047 | data_bits = 3; |
| 1048 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1049 | spin_lock_irqsave(&priv->lock, flags); |
| 1050 | oldlines = priv->line_control; |
| 1051 | if ((cflag & CBAUD) == B0) { |
| 1052 | /* drop dtr and rts */ |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 1053 | dbg("%s - dropping the lines, baud rate 0bps", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1054 | priv->line_control &= ~(CONTROL_DTR | CONTROL_RTS); |
Alan Cox | 8873aaa | 2008-03-10 21:59:28 +0000 | [diff] [blame] | 1055 | } else |
Lonnie Mendez | 3cb4a4f | 2005-05-03 17:02:20 -0500 | [diff] [blame] | 1056 | priv->line_control = (CONTROL_DTR | CONTROL_RTS); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1057 | spin_unlock_irqrestore(&priv->lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1058 | |
Lonnie Mendez | b9db07f | 2005-07-12 17:21:31 -0500 | [diff] [blame] | 1059 | dbg("%s - sending %d stop_bits, %d parity_enable, %d parity_type, " |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 1060 | "%d data_bits (+5)", __func__, stop_bits, |
Lonnie Mendez | b9db07f | 2005-07-12 17:21:31 -0500 | [diff] [blame] | 1061 | parity_enable, parity_type, data_bits); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1062 | |
Alan Cox | 813a224 | 2008-07-22 11:10:36 +0100 | [diff] [blame] | 1063 | cypress_serial_control(tty, port, tty_get_baud_rate(tty), |
| 1064 | data_bits, stop_bits, |
| 1065 | parity_enable, parity_type, |
| 1066 | 0, CYPRESS_SET_CONFIG); |
Lonnie Mendez | b9db07f | 2005-07-12 17:21:31 -0500 | [diff] [blame] | 1067 | |
| 1068 | /* we perform a CYPRESS_GET_CONFIG so that the current settings are |
| 1069 | * filled into the private structure this should confirm that all is |
| 1070 | * working if it returns what we just set */ |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 1071 | cypress_serial_control(tty, port, 0, 0, 0, 0, 0, 0, CYPRESS_GET_CONFIG); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1072 | |
Lonnie Mendez | b9db07f | 2005-07-12 17:21:31 -0500 | [diff] [blame] | 1073 | /* Here we can define custom tty settings for devices; the main tty |
| 1074 | * termios flag base comes from empeg.c */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1075 | |
Lonnie Mendez | b9db07f | 2005-07-12 17:21:31 -0500 | [diff] [blame] | 1076 | spin_lock_irqsave(&priv->lock, flags); |
Alan Cox | 813a224 | 2008-07-22 11:10:36 +0100 | [diff] [blame] | 1077 | if (priv->chiptype == CT_EARTHMATE && priv->baud_rate == 4800) { |
Lonnie Mendez | b9db07f | 2005-07-12 17:21:31 -0500 | [diff] [blame] | 1078 | dbg("Using custom termios settings for a baud rate of " |
| 1079 | "4800bps."); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1080 | /* define custom termios settings for NMEA protocol */ |
| 1081 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1082 | tty->termios->c_iflag /* input modes - */ |
Lonnie Mendez | b9db07f | 2005-07-12 17:21:31 -0500 | [diff] [blame] | 1083 | &= ~(IGNBRK /* disable ignore break */ |
| 1084 | | BRKINT /* disable break causes interrupt */ |
| 1085 | | PARMRK /* disable mark parity errors */ |
| 1086 | | ISTRIP /* disable clear high bit of input char */ |
| 1087 | | INLCR /* disable translate NL to CR */ |
| 1088 | | IGNCR /* disable ignore CR */ |
| 1089 | | ICRNL /* disable translate CR to NL */ |
| 1090 | | IXON); /* disable enable XON/XOFF flow control */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1091 | |
Lonnie Mendez | b9db07f | 2005-07-12 17:21:31 -0500 | [diff] [blame] | 1092 | tty->termios->c_oflag /* output modes */ |
| 1093 | &= ~OPOST; /* disable postprocess output char */ |
| 1094 | |
| 1095 | tty->termios->c_lflag /* line discipline modes */ |
| 1096 | &= ~(ECHO /* disable echo input characters */ |
| 1097 | | ECHONL /* disable echo new line */ |
| 1098 | | ICANON /* disable erase, kill, werase, and rprnt |
| 1099 | special characters */ |
| 1100 | | ISIG /* disable interrupt, quit, and suspend |
| 1101 | special characters */ |
| 1102 | | IEXTEN); /* disable non-POSIX special characters */ |
Lonnie Mendez | 3cb4a4f | 2005-05-03 17:02:20 -0500 | [diff] [blame] | 1103 | } /* CT_CYPHIDCOM: Application should handle this for device */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1104 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1105 | linechange = (priv->line_control != oldlines); |
| 1106 | spin_unlock_irqrestore(&priv->lock, flags); |
| 1107 | |
| 1108 | /* if necessary, set lines */ |
Lonnie Mendez | 3cb4a4f | 2005-05-03 17:02:20 -0500 | [diff] [blame] | 1109 | if (linechange) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1110 | priv->cmd_ctrl = 1; |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 1111 | cypress_write(tty, port, NULL, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1112 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1113 | } /* cypress_set_termios */ |
| 1114 | |
Lonnie Mendez | b9db07f | 2005-07-12 17:21:31 -0500 | [diff] [blame] | 1115 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1116 | /* returns amount of data still left in soft buffer */ |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 1117 | static int cypress_chars_in_buffer(struct tty_struct *tty) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1118 | { |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 1119 | struct usb_serial_port *port = tty->driver_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1120 | struct cypress_private *priv = usb_get_serial_port_data(port); |
| 1121 | int chars = 0; |
| 1122 | unsigned long flags; |
| 1123 | |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 1124 | dbg("%s - port %d", __func__, port->number); |
Alan Cox | 813a224 | 2008-07-22 11:10:36 +0100 | [diff] [blame] | 1125 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1126 | spin_lock_irqsave(&priv->lock, flags); |
Johan Hovold | 117fb8d | 2010-05-16 20:33:50 +0200 | [diff] [blame] | 1127 | chars = kfifo_len(&priv->write_fifo); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1128 | spin_unlock_irqrestore(&priv->lock, flags); |
| 1129 | |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 1130 | dbg("%s - returns %d", __func__, chars); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1131 | return chars; |
| 1132 | } |
| 1133 | |
| 1134 | |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 1135 | static void cypress_throttle(struct tty_struct *tty) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1136 | { |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 1137 | struct usb_serial_port *port = tty->driver_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1138 | struct cypress_private *priv = usb_get_serial_port_data(port); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1139 | |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 1140 | dbg("%s - port %d", __func__, port->number); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1141 | |
Oliver Neukum | 6383251 | 2009-10-07 10:50:23 +0200 | [diff] [blame] | 1142 | spin_lock_irq(&priv->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1143 | priv->rx_flags = THROTTLED; |
Oliver Neukum | 6383251 | 2009-10-07 10:50:23 +0200 | [diff] [blame] | 1144 | spin_unlock_irq(&priv->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1145 | } |
| 1146 | |
| 1147 | |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 1148 | static void cypress_unthrottle(struct tty_struct *tty) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1149 | { |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 1150 | struct usb_serial_port *port = tty->driver_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1151 | struct cypress_private *priv = usb_get_serial_port_data(port); |
| 1152 | int actually_throttled, result; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1153 | |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 1154 | dbg("%s - port %d", __func__, port->number); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1155 | |
Oliver Neukum | 6383251 | 2009-10-07 10:50:23 +0200 | [diff] [blame] | 1156 | spin_lock_irq(&priv->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1157 | actually_throttled = priv->rx_flags & ACTUALLY_THROTTLED; |
| 1158 | priv->rx_flags = 0; |
Oliver Neukum | 6383251 | 2009-10-07 10:50:23 +0200 | [diff] [blame] | 1159 | spin_unlock_irq(&priv->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1160 | |
Mike Isely | 78aef51 | 2006-08-29 22:07:11 -0500 | [diff] [blame] | 1161 | if (!priv->comm_is_ok) |
| 1162 | return; |
| 1163 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1164 | if (actually_throttled) { |
| 1165 | port->interrupt_in_urb->dev = port->serial->dev; |
| 1166 | |
Oliver Neukum | 6383251 | 2009-10-07 10:50:23 +0200 | [diff] [blame] | 1167 | result = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL); |
Mike Isely | 78aef51 | 2006-08-29 22:07:11 -0500 | [diff] [blame] | 1168 | if (result) { |
Lonnie Mendez | b9db07f | 2005-07-12 17:21:31 -0500 | [diff] [blame] | 1169 | dev_err(&port->dev, "%s - failed submitting read urb, " |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 1170 | "error %d\n", __func__, result); |
Mike Isely | 78aef51 | 2006-08-29 22:07:11 -0500 | [diff] [blame] | 1171 | cypress_set_dead(port); |
| 1172 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1173 | } |
| 1174 | } |
| 1175 | |
| 1176 | |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 1177 | static void cypress_read_int_callback(struct urb *urb) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1178 | { |
Ming Lei | cdc9779 | 2008-02-24 18:41:47 +0800 | [diff] [blame] | 1179 | struct usb_serial_port *port = urb->context; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1180 | struct cypress_private *priv = usb_get_serial_port_data(port); |
| 1181 | struct tty_struct *tty; |
| 1182 | unsigned char *data = urb->transfer_buffer; |
| 1183 | unsigned long flags; |
Lonnie Mendez | b9db07f | 2005-07-12 17:21:31 -0500 | [diff] [blame] | 1184 | char tty_flag = TTY_NORMAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1185 | int havedata = 0; |
| 1186 | int bytes = 0; |
| 1187 | int result; |
| 1188 | int i = 0; |
Greg Kroah-Hartman | 8d7bc55 | 2007-06-15 15:44:13 -0700 | [diff] [blame] | 1189 | int status = urb->status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1190 | |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 1191 | dbg("%s - port %d", __func__, port->number); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1192 | |
Greg Kroah-Hartman | 8d7bc55 | 2007-06-15 15:44:13 -0700 | [diff] [blame] | 1193 | switch (status) { |
Mike Isely | 78aef51 | 2006-08-29 22:07:11 -0500 | [diff] [blame] | 1194 | case 0: /* success */ |
| 1195 | break; |
| 1196 | case -ECONNRESET: |
| 1197 | case -ENOENT: |
| 1198 | case -ESHUTDOWN: |
| 1199 | /* precursor to disconnect so just go away */ |
| 1200 | return; |
| 1201 | case -EPIPE: |
Alan Stern | 4d2fae8 | 2009-07-09 12:59:57 -0400 | [diff] [blame] | 1202 | /* Can't call usb_clear_halt while in_interrupt */ |
| 1203 | /* FALLS THROUGH */ |
Mike Isely | 78aef51 | 2006-08-29 22:07:11 -0500 | [diff] [blame] | 1204 | default: |
| 1205 | /* something ugly is going on... */ |
Alan Cox | 813a224 | 2008-07-22 11:10:36 +0100 | [diff] [blame] | 1206 | dev_err(&urb->dev->dev, |
| 1207 | "%s - unexpected nonzero read status received: %d\n", |
| 1208 | __func__, status); |
Mike Isely | 78aef51 | 2006-08-29 22:07:11 -0500 | [diff] [blame] | 1209 | cypress_set_dead(port); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1210 | return; |
| 1211 | } |
| 1212 | |
| 1213 | spin_lock_irqsave(&priv->lock, flags); |
| 1214 | if (priv->rx_flags & THROTTLED) { |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 1215 | dbg("%s - now throttling", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1216 | priv->rx_flags |= ACTUALLY_THROTTLED; |
| 1217 | spin_unlock_irqrestore(&priv->lock, flags); |
| 1218 | return; |
| 1219 | } |
| 1220 | spin_unlock_irqrestore(&priv->lock, flags); |
| 1221 | |
Alan Cox | 4a90f09 | 2008-10-13 10:39:46 +0100 | [diff] [blame] | 1222 | tty = tty_port_tty_get(&port->port); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1223 | if (!tty) { |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 1224 | dbg("%s - bad tty pointer - exiting", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1225 | return; |
| 1226 | } |
| 1227 | |
| 1228 | spin_lock_irqsave(&priv->lock, flags); |
Mike Isely | 3416eaa | 2008-02-10 20:23:19 -0600 | [diff] [blame] | 1229 | result = urb->actual_length; |
| 1230 | switch (priv->pkt_fmt) { |
| 1231 | default: |
| 1232 | case packet_format_1: |
| 1233 | /* This is for the CY7C64013... */ |
| 1234 | priv->current_status = data[0] & 0xF8; |
| 1235 | bytes = data[1] + 2; |
| 1236 | i = 2; |
| 1237 | if (bytes > 2) |
| 1238 | havedata = 1; |
| 1239 | break; |
| 1240 | case packet_format_2: |
| 1241 | /* This is for the CY7C63743... */ |
| 1242 | priv->current_status = data[0] & 0xF8; |
| 1243 | bytes = (data[0] & 0x07) + 1; |
| 1244 | i = 1; |
| 1245 | if (bytes > 1) |
| 1246 | havedata = 1; |
| 1247 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1248 | } |
| 1249 | spin_unlock_irqrestore(&priv->lock, flags); |
Mike Isely | 3416eaa | 2008-02-10 20:23:19 -0600 | [diff] [blame] | 1250 | if (result < bytes) { |
| 1251 | dbg("%s - wrong packet size - received %d bytes but packet " |
| 1252 | "said %d bytes", __func__, result, bytes); |
| 1253 | goto continue_read; |
| 1254 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1255 | |
Alan Cox | 813a224 | 2008-07-22 11:10:36 +0100 | [diff] [blame] | 1256 | usb_serial_debug_data(debug, &port->dev, __func__, |
| 1257 | urb->actual_length, data); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1258 | |
| 1259 | spin_lock_irqsave(&priv->lock, flags); |
| 1260 | /* check to see if status has changed */ |
Mike Isely | 6768306 | 2008-02-10 20:23:28 -0600 | [diff] [blame] | 1261 | if (priv->current_status != priv->prev_status) { |
| 1262 | priv->diff_status |= priv->current_status ^ |
| 1263 | priv->prev_status; |
| 1264 | wake_up_interruptible(&priv->delta_msr_wait); |
| 1265 | priv->prev_status = priv->current_status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1266 | } |
Lonnie Mendez | b9db07f | 2005-07-12 17:21:31 -0500 | [diff] [blame] | 1267 | spin_unlock_irqrestore(&priv->lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1268 | |
Lonnie Mendez | b9db07f | 2005-07-12 17:21:31 -0500 | [diff] [blame] | 1269 | /* hangup, as defined in acm.c... this might be a bad place for it |
| 1270 | * though */ |
| 1271 | if (tty && !(tty->termios->c_cflag & CLOCAL) && |
| 1272 | !(priv->current_status & UART_CD)) { |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 1273 | dbg("%s - calling hangup", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1274 | tty_hangup(tty); |
| 1275 | goto continue_read; |
| 1276 | } |
| 1277 | |
Lonnie Mendez | b9db07f | 2005-07-12 17:21:31 -0500 | [diff] [blame] | 1278 | /* There is one error bit... I'm assuming it is a parity error |
| 1279 | * indicator as the generic firmware will set this bit to 1 if a |
| 1280 | * parity error occurs. |
| 1281 | * I can not find reference to any other error events. */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1282 | spin_lock_irqsave(&priv->lock, flags); |
| 1283 | if (priv->current_status & CYP_ERROR) { |
| 1284 | spin_unlock_irqrestore(&priv->lock, flags); |
| 1285 | tty_flag = TTY_PARITY; |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 1286 | dbg("%s - Parity Error detected", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1287 | } else |
| 1288 | spin_unlock_irqrestore(&priv->lock, flags); |
| 1289 | |
| 1290 | /* process read if there is data other than line status */ |
Alan Cox | a108bfc | 2010-02-18 16:44:01 +0000 | [diff] [blame] | 1291 | if (tty && bytes > i) { |
| 1292 | tty_insert_flip_string_fixed_flag(tty, data + i, |
Johan Hovold | 70ced22 | 2010-05-07 19:46:56 +0200 | [diff] [blame] | 1293 | tty_flag, bytes - i); |
Alan Cox | 4a90f09 | 2008-10-13 10:39:46 +0100 | [diff] [blame] | 1294 | tty_flip_buffer_push(tty); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1295 | } |
| 1296 | |
| 1297 | spin_lock_irqsave(&priv->lock, flags); |
Lonnie Mendez | b9db07f | 2005-07-12 17:21:31 -0500 | [diff] [blame] | 1298 | /* control and status byte(s) are also counted */ |
| 1299 | priv->bytes_in += bytes; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1300 | spin_unlock_irqrestore(&priv->lock, flags); |
| 1301 | |
| 1302 | continue_read: |
Alan Cox | 4a90f09 | 2008-10-13 10:39:46 +0100 | [diff] [blame] | 1303 | tty_kref_put(tty); |
Lonnie Mendez | b9db07f | 2005-07-12 17:21:31 -0500 | [diff] [blame] | 1304 | |
Alan Stern | 1f87158 | 2010-02-17 10:05:47 -0500 | [diff] [blame] | 1305 | /* Continue trying to always read */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1306 | |
Alan Stern | 1f87158 | 2010-02-17 10:05:47 -0500 | [diff] [blame] | 1307 | if (priv->comm_is_ok) { |
Lonnie Mendez | b9db07f | 2005-07-12 17:21:31 -0500 | [diff] [blame] | 1308 | usb_fill_int_urb(port->interrupt_in_urb, port->serial->dev, |
| 1309 | usb_rcvintpipe(port->serial->dev, |
| 1310 | port->interrupt_in_endpointAddress), |
| 1311 | port->interrupt_in_urb->transfer_buffer, |
| 1312 | port->interrupt_in_urb->transfer_buffer_length, |
Alan Cox | 813a224 | 2008-07-22 11:10:36 +0100 | [diff] [blame] | 1313 | cypress_read_int_callback, port, |
| 1314 | priv->read_urb_interval); |
Lonnie Mendez | b9db07f | 2005-07-12 17:21:31 -0500 | [diff] [blame] | 1315 | result = usb_submit_urb(port->interrupt_in_urb, GFP_ATOMIC); |
Alan Stern | 1f87158 | 2010-02-17 10:05:47 -0500 | [diff] [blame] | 1316 | if (result && result != -EPERM) { |
Lonnie Mendez | b9db07f | 2005-07-12 17:21:31 -0500 | [diff] [blame] | 1317 | dev_err(&urb->dev->dev, "%s - failed resubmitting " |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 1318 | "read urb, error %d\n", __func__, |
Lonnie Mendez | b9db07f | 2005-07-12 17:21:31 -0500 | [diff] [blame] | 1319 | result); |
Mike Isely | 78aef51 | 2006-08-29 22:07:11 -0500 | [diff] [blame] | 1320 | cypress_set_dead(port); |
| 1321 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1322 | } |
Lonnie Mendez | b9db07f | 2005-07-12 17:21:31 -0500 | [diff] [blame] | 1323 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1324 | return; |
| 1325 | } /* cypress_read_int_callback */ |
| 1326 | |
| 1327 | |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 1328 | static void cypress_write_int_callback(struct urb *urb) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1329 | { |
Ming Lei | cdc9779 | 2008-02-24 18:41:47 +0800 | [diff] [blame] | 1330 | struct usb_serial_port *port = urb->context; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1331 | struct cypress_private *priv = usb_get_serial_port_data(port); |
| 1332 | int result; |
Greg Kroah-Hartman | 8d7bc55 | 2007-06-15 15:44:13 -0700 | [diff] [blame] | 1333 | int status = urb->status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1334 | |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 1335 | dbg("%s - port %d", __func__, port->number); |
Greg Kroah-Hartman | 8d7bc55 | 2007-06-15 15:44:13 -0700 | [diff] [blame] | 1336 | |
| 1337 | switch (status) { |
Alan Cox | 813a224 | 2008-07-22 11:10:36 +0100 | [diff] [blame] | 1338 | case 0: |
| 1339 | /* success */ |
| 1340 | break; |
| 1341 | case -ECONNRESET: |
| 1342 | case -ENOENT: |
| 1343 | case -ESHUTDOWN: |
| 1344 | /* this urb is terminated, clean up */ |
| 1345 | dbg("%s - urb shutting down with status: %d", |
| 1346 | __func__, status); |
| 1347 | priv->write_urb_in_use = 0; |
| 1348 | return; |
| 1349 | case -EPIPE: /* no break needed; clear halt and resubmit */ |
| 1350 | if (!priv->comm_is_ok) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1351 | break; |
Alan Cox | 813a224 | 2008-07-22 11:10:36 +0100 | [diff] [blame] | 1352 | usb_clear_halt(port->serial->dev, 0x02); |
| 1353 | /* error in the urb, so we have to resubmit it */ |
| 1354 | dbg("%s - nonzero write bulk status received: %d", |
| 1355 | __func__, status); |
| 1356 | port->interrupt_out_urb->transfer_buffer_length = 1; |
| 1357 | port->interrupt_out_urb->dev = port->serial->dev; |
| 1358 | result = usb_submit_urb(port->interrupt_out_urb, GFP_ATOMIC); |
| 1359 | if (!result) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1360 | return; |
Alan Cox | 813a224 | 2008-07-22 11:10:36 +0100 | [diff] [blame] | 1361 | dev_err(&urb->dev->dev, |
| 1362 | "%s - failed resubmitting write urb, error %d\n", |
| 1363 | __func__, result); |
| 1364 | cypress_set_dead(port); |
| 1365 | break; |
| 1366 | default: |
| 1367 | dev_err(&urb->dev->dev, |
| 1368 | "%s - unexpected nonzero write status received: %d\n", |
| 1369 | __func__, status); |
| 1370 | cypress_set_dead(port); |
| 1371 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1372 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1373 | priv->write_urb_in_use = 0; |
Alan Cox | 813a224 | 2008-07-22 11:10:36 +0100 | [diff] [blame] | 1374 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1375 | /* send any buffered data */ |
| 1376 | cypress_send(port); |
| 1377 | } |
| 1378 | |
| 1379 | |
| 1380 | /***************************************************************************** |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1381 | * Module functions |
| 1382 | *****************************************************************************/ |
| 1383 | |
| 1384 | static int __init cypress_init(void) |
| 1385 | { |
| 1386 | int retval; |
Alan Cox | 813a224 | 2008-07-22 11:10:36 +0100 | [diff] [blame] | 1387 | |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 1388 | dbg("%s", __func__); |
Alan Cox | 813a224 | 2008-07-22 11:10:36 +0100 | [diff] [blame] | 1389 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1390 | retval = usb_serial_register(&cypress_earthmate_device); |
| 1391 | if (retval) |
| 1392 | goto failed_em_register; |
| 1393 | retval = usb_serial_register(&cypress_hidcom_device); |
| 1394 | if (retval) |
| 1395 | goto failed_hidcom_register; |
Lonnie Mendez | a5c44e2 | 2006-03-01 10:45:24 -0600 | [diff] [blame] | 1396 | retval = usb_serial_register(&cypress_ca42v2_device); |
| 1397 | if (retval) |
| 1398 | goto failed_ca42v2_register; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1399 | retval = usb_register(&cypress_driver); |
| 1400 | if (retval) |
| 1401 | goto failed_usb_register; |
| 1402 | |
Greg Kroah-Hartman | c197a8d | 2008-08-18 13:21:04 -0700 | [diff] [blame] | 1403 | printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":" |
| 1404 | DRIVER_DESC "\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1405 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1406 | |
Mariusz Kozlowski | 2e46b74 | 2006-11-17 17:49:22 +0100 | [diff] [blame] | 1407 | failed_usb_register: |
| 1408 | usb_serial_deregister(&cypress_ca42v2_device); |
| 1409 | failed_ca42v2_register: |
| 1410 | usb_serial_deregister(&cypress_hidcom_device); |
| 1411 | failed_hidcom_register: |
| 1412 | usb_serial_deregister(&cypress_earthmate_device); |
| 1413 | failed_em_register: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1414 | return retval; |
| 1415 | } |
| 1416 | |
| 1417 | |
Alan Cox | 813a224 | 2008-07-22 11:10:36 +0100 | [diff] [blame] | 1418 | static void __exit cypress_exit(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1419 | { |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 1420 | dbg("%s", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1421 | |
Alan Cox | 813a224 | 2008-07-22 11:10:36 +0100 | [diff] [blame] | 1422 | usb_deregister(&cypress_driver); |
| 1423 | usb_serial_deregister(&cypress_earthmate_device); |
| 1424 | usb_serial_deregister(&cypress_hidcom_device); |
| 1425 | usb_serial_deregister(&cypress_ca42v2_device); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1426 | } |
| 1427 | |
| 1428 | |
| 1429 | module_init(cypress_init); |
| 1430 | module_exit(cypress_exit); |
| 1431 | |
Alan Cox | 813a224 | 2008-07-22 11:10:36 +0100 | [diff] [blame] | 1432 | MODULE_AUTHOR(DRIVER_AUTHOR); |
| 1433 | MODULE_DESCRIPTION(DRIVER_DESC); |
| 1434 | MODULE_VERSION(DRIVER_VERSION); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1435 | MODULE_LICENSE("GPL"); |
| 1436 | |
| 1437 | module_param(debug, bool, S_IRUGO | S_IWUSR); |
| 1438 | MODULE_PARM_DESC(debug, "Debug enabled or not"); |
| 1439 | module_param(stats, bool, S_IRUGO | S_IWUSR); |
| 1440 | MODULE_PARM_DESC(stats, "Enable statistics or not"); |
Lonnie Mendez | 3cb4a4f | 2005-05-03 17:02:20 -0500 | [diff] [blame] | 1441 | module_param(interval, int, S_IRUGO | S_IWUSR); |
| 1442 | MODULE_PARM_DESC(interval, "Overrides interrupt interval"); |
Mike Frysinger | c312659 | 2009-12-18 16:33:03 -0500 | [diff] [blame] | 1443 | module_param(unstable_bauds, bool, S_IRUGO | S_IWUSR); |
| 1444 | MODULE_PARM_DESC(unstable_bauds, "Allow unstable baud rates"); |