Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * USB Keyspan PDA / Xircom / Entregra Converter driver |
| 3 | * |
| 4 | * Copyright (C) 1999 - 2001 Greg Kroah-Hartman <greg@kroah.com> |
| 5 | * Copyright (C) 1999, 2000 Brian Warner <warner@lothar.com> |
| 6 | * Copyright (C) 2000 Al Borchers <borchers@steinerpoint.com> |
| 7 | * |
| 8 | * This program is free software; you can redistribute it and/or modify |
| 9 | * it under the terms of the GNU General Public License as published by |
| 10 | * the Free Software Foundation; either version 2 of the License, or |
| 11 | * (at your option) any later version. |
| 12 | * |
Alan Cox | 9e70f31 | 2008-07-22 11:13:42 +0100 | [diff] [blame] | 13 | * See Documentation/usb/usb-serial.txt for more information on using this |
| 14 | * driver |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 15 | */ |
| 16 | |
| 17 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 18 | #include <linux/kernel.h> |
| 19 | #include <linux/errno.h> |
| 20 | #include <linux/init.h> |
| 21 | #include <linux/slab.h> |
| 22 | #include <linux/tty.h> |
| 23 | #include <linux/tty_driver.h> |
| 24 | #include <linux/tty_flip.h> |
| 25 | #include <linux/module.h> |
| 26 | #include <linux/spinlock.h> |
| 27 | #include <linux/workqueue.h> |
David Woodhouse | 3edbf98 | 2008-05-30 15:15:13 +0300 | [diff] [blame] | 28 | #include <linux/firmware.h> |
| 29 | #include <linux/ihex.h> |
Alan Cox | 9e70f31 | 2008-07-22 11:13:42 +0100 | [diff] [blame] | 30 | #include <linux/uaccess.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 31 | #include <linux/usb.h> |
Greg Kroah-Hartman | a969888 | 2006-07-11 21:22:58 -0700 | [diff] [blame] | 32 | #include <linux/usb/serial.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 33 | |
Rusty Russell | 90ab5ee | 2012-01-13 09:32:20 +1030 | [diff] [blame] | 34 | static bool debug; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 35 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 36 | /* make a simple define to handle if we are compiling keyspan_pda or xircom support */ |
| 37 | #if defined(CONFIG_USB_SERIAL_KEYSPAN_PDA) || defined(CONFIG_USB_SERIAL_KEYSPAN_PDA_MODULE) |
| 38 | #define KEYSPAN |
| 39 | #else |
| 40 | #undef KEYSPAN |
| 41 | #endif |
| 42 | #if defined(CONFIG_USB_SERIAL_XIRCOM) || defined(CONFIG_USB_SERIAL_XIRCOM_MODULE) |
| 43 | #define XIRCOM |
| 44 | #else |
| 45 | #undef XIRCOM |
| 46 | #endif |
| 47 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 48 | /* |
| 49 | * Version Information |
| 50 | */ |
| 51 | #define DRIVER_VERSION "v1.1" |
| 52 | #define DRIVER_AUTHOR "Brian Warner <warner@lothar.com>" |
| 53 | #define DRIVER_DESC "USB Keyspan PDA Converter driver" |
| 54 | |
| 55 | struct keyspan_pda_private { |
| 56 | int tx_room; |
| 57 | int tx_throttled; |
| 58 | struct work_struct wakeup_work; |
| 59 | struct work_struct unthrottle_work; |
David Howells | c402895 | 2006-11-22 14:57:56 +0000 | [diff] [blame] | 60 | struct usb_serial *serial; |
| 61 | struct usb_serial_port *port; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 62 | }; |
| 63 | |
| 64 | |
| 65 | #define KEYSPAN_VENDOR_ID 0x06cd |
| 66 | #define KEYSPAN_PDA_FAKE_ID 0x0103 |
| 67 | #define KEYSPAN_PDA_ID 0x0104 /* no clue */ |
| 68 | |
| 69 | /* For Xircom PGSDB9 and older Entregra version of the same device */ |
| 70 | #define XIRCOM_VENDOR_ID 0x085a |
| 71 | #define XIRCOM_FAKE_ID 0x8027 |
| 72 | #define ENTREGRA_VENDOR_ID 0x1645 |
| 73 | #define ENTREGRA_FAKE_ID 0x8093 |
| 74 | |
Németh Márton | 7d40d7e | 2010-01-10 15:34:24 +0100 | [diff] [blame] | 75 | static const struct usb_device_id id_table_combined[] = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 76 | #ifdef KEYSPAN |
| 77 | { USB_DEVICE(KEYSPAN_VENDOR_ID, KEYSPAN_PDA_FAKE_ID) }, |
| 78 | #endif |
| 79 | #ifdef XIRCOM |
| 80 | { USB_DEVICE(XIRCOM_VENDOR_ID, XIRCOM_FAKE_ID) }, |
| 81 | { USB_DEVICE(ENTREGRA_VENDOR_ID, ENTREGRA_FAKE_ID) }, |
| 82 | #endif |
| 83 | { USB_DEVICE(KEYSPAN_VENDOR_ID, KEYSPAN_PDA_ID) }, |
| 84 | { } /* Terminating entry */ |
| 85 | }; |
| 86 | |
Alan Cox | 9e70f31 | 2008-07-22 11:13:42 +0100 | [diff] [blame] | 87 | MODULE_DEVICE_TABLE(usb, id_table_combined); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 88 | |
| 89 | static struct usb_driver keyspan_pda_driver = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 90 | .name = "keyspan_pda", |
| 91 | .probe = usb_serial_probe, |
| 92 | .disconnect = usb_serial_disconnect, |
| 93 | .id_table = id_table_combined, |
| 94 | }; |
| 95 | |
Németh Márton | 7d40d7e | 2010-01-10 15:34:24 +0100 | [diff] [blame] | 96 | static const struct usb_device_id id_table_std[] = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 97 | { USB_DEVICE(KEYSPAN_VENDOR_ID, KEYSPAN_PDA_ID) }, |
| 98 | { } /* Terminating entry */ |
| 99 | }; |
| 100 | |
| 101 | #ifdef KEYSPAN |
Németh Márton | 7d40d7e | 2010-01-10 15:34:24 +0100 | [diff] [blame] | 102 | static const struct usb_device_id id_table_fake[] = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 103 | { USB_DEVICE(KEYSPAN_VENDOR_ID, KEYSPAN_PDA_FAKE_ID) }, |
| 104 | { } /* Terminating entry */ |
| 105 | }; |
| 106 | #endif |
| 107 | |
| 108 | #ifdef XIRCOM |
Németh Márton | 7d40d7e | 2010-01-10 15:34:24 +0100 | [diff] [blame] | 109 | static const struct usb_device_id id_table_fake_xircom[] = { |
Alan Cox | 9e70f31 | 2008-07-22 11:13:42 +0100 | [diff] [blame] | 110 | { USB_DEVICE(XIRCOM_VENDOR_ID, XIRCOM_FAKE_ID) }, |
| 111 | { USB_DEVICE(ENTREGRA_VENDOR_ID, ENTREGRA_FAKE_ID) }, |
| 112 | { } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 113 | }; |
| 114 | #endif |
| 115 | |
David Howells | c402895 | 2006-11-22 14:57:56 +0000 | [diff] [blame] | 116 | static void keyspan_pda_wakeup_write(struct work_struct *work) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 117 | { |
David Howells | c402895 | 2006-11-22 14:57:56 +0000 | [diff] [blame] | 118 | struct keyspan_pda_private *priv = |
| 119 | container_of(work, struct keyspan_pda_private, wakeup_work); |
| 120 | struct usb_serial_port *port = priv->port; |
Alan Cox | 4a90f09 | 2008-10-13 10:39:46 +0100 | [diff] [blame] | 121 | struct tty_struct *tty = tty_port_tty_get(&port->port); |
Jiri Slaby | f7d7aed | 2011-02-28 10:34:05 +0100 | [diff] [blame] | 122 | if (tty) |
| 123 | tty_wakeup(tty); |
Alan Cox | 4a90f09 | 2008-10-13 10:39:46 +0100 | [diff] [blame] | 124 | tty_kref_put(tty); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 125 | } |
| 126 | |
David Howells | c402895 | 2006-11-22 14:57:56 +0000 | [diff] [blame] | 127 | static void keyspan_pda_request_unthrottle(struct work_struct *work) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 128 | { |
David Howells | c402895 | 2006-11-22 14:57:56 +0000 | [diff] [blame] | 129 | struct keyspan_pda_private *priv = |
| 130 | container_of(work, struct keyspan_pda_private, unthrottle_work); |
| 131 | struct usb_serial *serial = priv->serial; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 132 | int result; |
| 133 | |
| 134 | dbg(" request_unthrottle"); |
| 135 | /* ask the device to tell us when the tx buffer becomes |
| 136 | sufficiently empty */ |
Alan Cox | 9e70f31 | 2008-07-22 11:13:42 +0100 | [diff] [blame] | 137 | result = usb_control_msg(serial->dev, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 138 | usb_sndctrlpipe(serial->dev, 0), |
| 139 | 7, /* request_unthrottle */ |
| 140 | USB_TYPE_VENDOR | USB_RECIP_INTERFACE |
| 141 | | USB_DIR_OUT, |
| 142 | 16, /* value: threshold */ |
| 143 | 0, /* index */ |
| 144 | NULL, |
| 145 | 0, |
| 146 | 2000); |
| 147 | if (result < 0) |
Alan Cox | 9e70f31 | 2008-07-22 11:13:42 +0100 | [diff] [blame] | 148 | dbg("%s - error %d from usb_control_msg", |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 149 | __func__, result); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 150 | } |
| 151 | |
| 152 | |
Alan Cox | 9e70f31 | 2008-07-22 11:13:42 +0100 | [diff] [blame] | 153 | static void keyspan_pda_rx_interrupt(struct urb *urb) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 154 | { |
Ming Lei | cdc9779 | 2008-02-24 18:41:47 +0800 | [diff] [blame] | 155 | struct usb_serial_port *port = urb->context; |
Jiri Slaby | f7d7aed | 2011-02-28 10:34:05 +0100 | [diff] [blame] | 156 | struct tty_struct *tty; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 157 | unsigned char *data = urb->transfer_buffer; |
Greg Kroah-Hartman | 23189ae | 2007-06-15 15:44:13 -0700 | [diff] [blame] | 158 | int retval; |
| 159 | int status = urb->status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 160 | struct keyspan_pda_private *priv; |
| 161 | priv = usb_get_serial_port_data(port); |
| 162 | |
Greg Kroah-Hartman | 23189ae | 2007-06-15 15:44:13 -0700 | [diff] [blame] | 163 | switch (status) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 164 | case 0: |
| 165 | /* success */ |
| 166 | break; |
| 167 | case -ECONNRESET: |
| 168 | case -ENOENT: |
| 169 | case -ESHUTDOWN: |
| 170 | /* this urb is terminated, clean up */ |
Greg Kroah-Hartman | 23189ae | 2007-06-15 15:44:13 -0700 | [diff] [blame] | 171 | dbg("%s - urb shutting down with status: %d", |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 172 | __func__, status); |
Jiri Slaby | f7d7aed | 2011-02-28 10:34:05 +0100 | [diff] [blame] | 173 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 174 | default: |
Greg Kroah-Hartman | 23189ae | 2007-06-15 15:44:13 -0700 | [diff] [blame] | 175 | dbg("%s - nonzero urb status received: %d", |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 176 | __func__, status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 177 | goto exit; |
| 178 | } |
| 179 | |
Alan Cox | 9e70f31 | 2008-07-22 11:13:42 +0100 | [diff] [blame] | 180 | /* see if the message is data or a status interrupt */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 181 | switch (data[0]) { |
| 182 | case 0: |
Jiri Slaby | f7d7aed | 2011-02-28 10:34:05 +0100 | [diff] [blame] | 183 | tty = tty_port_tty_get(&port->port); |
| 184 | /* rest of message is rx data */ |
| 185 | if (tty && urb->actual_length) { |
Alan Cox | 8dd03a5 | 2008-07-22 11:13:51 +0100 | [diff] [blame] | 186 | tty_insert_flip_string(tty, data + 1, |
| 187 | urb->actual_length - 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 188 | tty_flip_buffer_push(tty); |
| 189 | } |
Jiri Slaby | f7d7aed | 2011-02-28 10:34:05 +0100 | [diff] [blame] | 190 | tty_kref_put(tty); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 191 | break; |
| 192 | case 1: |
| 193 | /* status interrupt */ |
| 194 | dbg(" rx int, d1=%d, d2=%d", data[1], data[2]); |
| 195 | switch (data[1]) { |
| 196 | case 1: /* modemline change */ |
| 197 | break; |
| 198 | case 2: /* tx unthrottle interrupt */ |
| 199 | priv->tx_throttled = 0; |
| 200 | /* queue up a wakeup at scheduler time */ |
| 201 | schedule_work(&priv->wakeup_work); |
| 202 | break; |
| 203 | default: |
| 204 | break; |
| 205 | } |
| 206 | break; |
| 207 | default: |
| 208 | break; |
| 209 | } |
| 210 | |
| 211 | exit: |
Alan Cox | 9e70f31 | 2008-07-22 11:13:42 +0100 | [diff] [blame] | 212 | retval = usb_submit_urb(urb, GFP_ATOMIC); |
Greg Kroah-Hartman | 23189ae | 2007-06-15 15:44:13 -0700 | [diff] [blame] | 213 | if (retval) |
Alan Cox | 4a90f09 | 2008-10-13 10:39:46 +0100 | [diff] [blame] | 214 | dev_err(&port->dev, |
| 215 | "%s - usb_submit_urb failed with result %d", |
| 216 | __func__, retval); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 217 | } |
| 218 | |
| 219 | |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 220 | static void keyspan_pda_rx_throttle(struct tty_struct *tty) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 221 | { |
| 222 | /* stop receiving characters. We just turn off the URB request, and |
| 223 | let chars pile up in the device. If we're doing hardware |
| 224 | flowcontrol, the device will signal the other end when its buffer |
| 225 | fills up. If we're doing XON/XOFF, this would be a good time to |
| 226 | send an XOFF, although it might make sense to foist that off |
| 227 | upon the device too. */ |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 228 | struct usb_serial_port *port = tty->driver_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 229 | dbg("keyspan_pda_rx_throttle port %d", port->number); |
| 230 | usb_kill_urb(port->interrupt_in_urb); |
| 231 | } |
| 232 | |
| 233 | |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 234 | static void keyspan_pda_rx_unthrottle(struct tty_struct *tty) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 235 | { |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 236 | struct usb_serial_port *port = tty->driver_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 237 | /* just restart the receive interrupt URB */ |
| 238 | dbg("keyspan_pda_rx_unthrottle port %d", port->number); |
Oliver Neukum | 6383251 | 2009-10-07 10:50:23 +0200 | [diff] [blame] | 239 | if (usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 240 | dbg(" usb_submit_urb(read urb) failed"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 241 | } |
| 242 | |
| 243 | |
Alan Cox | 9e70f31 | 2008-07-22 11:13:42 +0100 | [diff] [blame] | 244 | static speed_t keyspan_pda_setbaud(struct usb_serial *serial, speed_t baud) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 245 | { |
| 246 | int rc; |
| 247 | int bindex; |
| 248 | |
Alan Cox | 9e70f31 | 2008-07-22 11:13:42 +0100 | [diff] [blame] | 249 | switch (baud) { |
| 250 | case 110: |
| 251 | bindex = 0; |
| 252 | break; |
| 253 | case 300: |
| 254 | bindex = 1; |
| 255 | break; |
| 256 | case 1200: |
| 257 | bindex = 2; |
| 258 | break; |
| 259 | case 2400: |
| 260 | bindex = 3; |
| 261 | break; |
| 262 | case 4800: |
| 263 | bindex = 4; |
| 264 | break; |
| 265 | case 9600: |
| 266 | bindex = 5; |
| 267 | break; |
| 268 | case 19200: |
| 269 | bindex = 6; |
| 270 | break; |
| 271 | case 38400: |
| 272 | bindex = 7; |
| 273 | break; |
| 274 | case 57600: |
| 275 | bindex = 8; |
| 276 | break; |
| 277 | case 115200: |
| 278 | bindex = 9; |
| 279 | break; |
| 280 | default: |
| 281 | bindex = 5; /* Default to 9600 */ |
| 282 | baud = 9600; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 283 | } |
| 284 | |
| 285 | /* rather than figure out how to sleep while waiting for this |
| 286 | to complete, I just use the "legacy" API. */ |
| 287 | rc = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), |
| 288 | 0, /* set baud */ |
Alan Cox | 9e70f31 | 2008-07-22 11:13:42 +0100 | [diff] [blame] | 289 | USB_TYPE_VENDOR |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 290 | | USB_RECIP_INTERFACE |
| 291 | | USB_DIR_OUT, /* type */ |
| 292 | bindex, /* value */ |
| 293 | 0, /* index */ |
| 294 | NULL, /* &data */ |
| 295 | 0, /* size */ |
| 296 | 2000); /* timeout */ |
Alan Cox | e7806e3 | 2007-12-13 16:15:28 -0800 | [diff] [blame] | 297 | if (rc < 0) |
| 298 | return 0; |
| 299 | return baud; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 300 | } |
| 301 | |
| 302 | |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 303 | static void keyspan_pda_break_ctl(struct tty_struct *tty, int break_state) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 304 | { |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 305 | struct usb_serial_port *port = tty->driver_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 306 | struct usb_serial *serial = port->serial; |
| 307 | int value; |
| 308 | int result; |
| 309 | |
| 310 | if (break_state == -1) |
| 311 | value = 1; /* start break */ |
| 312 | else |
| 313 | value = 0; /* clear break */ |
| 314 | result = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), |
Alan Cox | 9e70f31 | 2008-07-22 11:13:42 +0100 | [diff] [blame] | 315 | 4, /* set break */ |
| 316 | USB_TYPE_VENDOR | USB_RECIP_INTERFACE | USB_DIR_OUT, |
| 317 | value, 0, NULL, 0, 2000); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 318 | if (result < 0) |
Alan Cox | 9e70f31 | 2008-07-22 11:13:42 +0100 | [diff] [blame] | 319 | dbg("%s - error %d from usb_control_msg", |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 320 | __func__, result); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 321 | /* there is something funky about this.. the TCSBRK that 'cu' performs |
| 322 | ought to translate into a break_ctl(-1),break_ctl(0) pair HZ/4 |
| 323 | seconds apart, but it feels like the break sent isn't as long as it |
| 324 | is on /dev/ttyS0 */ |
| 325 | } |
| 326 | |
| 327 | |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 328 | static void keyspan_pda_set_termios(struct tty_struct *tty, |
| 329 | struct usb_serial_port *port, struct ktermios *old_termios) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 330 | { |
| 331 | struct usb_serial *serial = port->serial; |
Alan Cox | e7806e3 | 2007-12-13 16:15:28 -0800 | [diff] [blame] | 332 | speed_t speed; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 333 | |
| 334 | /* cflag specifies lots of stuff: number of stop bits, parity, number |
| 335 | of data bits, baud. What can the device actually handle?: |
| 336 | CSTOPB (1 stop bit or 2) |
| 337 | PARENB (parity) |
| 338 | CSIZE (5bit .. 8bit) |
| 339 | There is minimal hw support for parity (a PSW bit seems to hold the |
| 340 | parity of whatever is in the accumulator). The UART either deals |
| 341 | with 10 bits (start, 8 data, stop) or 11 bits (start, 8 data, |
| 342 | 1 special, stop). So, with firmware changes, we could do: |
| 343 | 8N1: 10 bit |
| 344 | 8N2: 11 bit, extra bit always (mark?) |
| 345 | 8[EOMS]1: 11 bit, extra bit is parity |
| 346 | 7[EOMS]1: 10 bit, b0/b7 is parity |
| 347 | 7[EOMS]2: 11 bit, b0/b7 is parity, extra bit always (mark?) |
| 348 | |
| 349 | HW flow control is dictated by the tty->termios->c_cflags & CRTSCTS |
| 350 | bit. |
| 351 | |
| 352 | For now, just do baud. */ |
| 353 | |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 354 | speed = tty_get_baud_rate(tty); |
Alan Cox | e7806e3 | 2007-12-13 16:15:28 -0800 | [diff] [blame] | 355 | speed = keyspan_pda_setbaud(serial, speed); |
| 356 | |
| 357 | if (speed == 0) { |
| 358 | dbg("can't handle requested baud rate"); |
| 359 | /* It hasn't changed so.. */ |
| 360 | speed = tty_termios_baud_rate(old_termios); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 361 | } |
Alan Cox | e7806e3 | 2007-12-13 16:15:28 -0800 | [diff] [blame] | 362 | /* Only speed can change so copy the old h/w parameters |
| 363 | then encode the new speed */ |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 364 | tty_termios_copy_hw(tty->termios, old_termios); |
| 365 | tty_encode_baud_rate(tty, speed, speed); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 366 | } |
| 367 | |
| 368 | |
| 369 | /* modem control pins: DTR and RTS are outputs and can be controlled. |
| 370 | DCD, RI, DSR, CTS are inputs and can be read. All outputs can also be |
| 371 | read. The byte passed is: DTR(b7) DCD RI DSR CTS RTS(b2) unused unused */ |
| 372 | |
| 373 | static int keyspan_pda_get_modem_info(struct usb_serial *serial, |
| 374 | unsigned char *value) |
| 375 | { |
| 376 | int rc; |
Johan Hovold | ca65d25 | 2009-12-28 23:01:51 +0100 | [diff] [blame] | 377 | u8 *data; |
| 378 | |
| 379 | data = kmalloc(1, GFP_KERNEL); |
| 380 | if (!data) |
| 381 | return -ENOMEM; |
| 382 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 383 | rc = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), |
| 384 | 3, /* get pins */ |
| 385 | USB_TYPE_VENDOR|USB_RECIP_INTERFACE|USB_DIR_IN, |
Johan Hovold | ca65d25 | 2009-12-28 23:01:51 +0100 | [diff] [blame] | 386 | 0, 0, data, 1, 2000); |
Benny Halevy | 3b36a8f | 2008-06-27 12:22:32 +0300 | [diff] [blame] | 387 | if (rc >= 0) |
Johan Hovold | ca65d25 | 2009-12-28 23:01:51 +0100 | [diff] [blame] | 388 | *value = *data; |
| 389 | |
| 390 | kfree(data); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 391 | return rc; |
| 392 | } |
| 393 | |
| 394 | |
| 395 | static int keyspan_pda_set_modem_info(struct usb_serial *serial, |
| 396 | unsigned char value) |
| 397 | { |
| 398 | int rc; |
| 399 | rc = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), |
| 400 | 3, /* set pins */ |
| 401 | USB_TYPE_VENDOR|USB_RECIP_INTERFACE|USB_DIR_OUT, |
| 402 | value, 0, NULL, 0, 2000); |
| 403 | return rc; |
| 404 | } |
| 405 | |
Alan Cox | 60b33c1 | 2011-02-14 16:26:14 +0000 | [diff] [blame] | 406 | static int keyspan_pda_tiocmget(struct tty_struct *tty) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 407 | { |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 408 | struct usb_serial_port *port = tty->driver_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 409 | struct usb_serial *serial = port->serial; |
| 410 | int rc; |
| 411 | unsigned char status; |
| 412 | int value; |
| 413 | |
| 414 | rc = keyspan_pda_get_modem_info(serial, &status); |
| 415 | if (rc < 0) |
| 416 | return rc; |
| 417 | value = |
| 418 | ((status & (1<<7)) ? TIOCM_DTR : 0) | |
| 419 | ((status & (1<<6)) ? TIOCM_CAR : 0) | |
| 420 | ((status & (1<<5)) ? TIOCM_RNG : 0) | |
| 421 | ((status & (1<<4)) ? TIOCM_DSR : 0) | |
| 422 | ((status & (1<<3)) ? TIOCM_CTS : 0) | |
| 423 | ((status & (1<<2)) ? TIOCM_RTS : 0); |
| 424 | return value; |
| 425 | } |
| 426 | |
Alan Cox | 20b9d17 | 2011-02-14 16:26:50 +0000 | [diff] [blame] | 427 | static int keyspan_pda_tiocmset(struct tty_struct *tty, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 428 | unsigned int set, unsigned int clear) |
| 429 | { |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 430 | struct usb_serial_port *port = tty->driver_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 431 | struct usb_serial *serial = port->serial; |
| 432 | int rc; |
| 433 | unsigned char status; |
| 434 | |
| 435 | rc = keyspan_pda_get_modem_info(serial, &status); |
| 436 | if (rc < 0) |
| 437 | return rc; |
| 438 | |
| 439 | if (set & TIOCM_RTS) |
| 440 | status |= (1<<2); |
| 441 | if (set & TIOCM_DTR) |
| 442 | status |= (1<<7); |
| 443 | |
| 444 | if (clear & TIOCM_RTS) |
| 445 | status &= ~(1<<2); |
| 446 | if (clear & TIOCM_DTR) |
| 447 | status &= ~(1<<7); |
| 448 | rc = keyspan_pda_set_modem_info(serial, status); |
| 449 | return rc; |
| 450 | } |
| 451 | |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 452 | static int keyspan_pda_write(struct tty_struct *tty, |
| 453 | struct usb_serial_port *port, const unsigned char *buf, int count) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 454 | { |
| 455 | struct usb_serial *serial = port->serial; |
| 456 | int request_unthrottle = 0; |
| 457 | int rc = 0; |
| 458 | struct keyspan_pda_private *priv; |
| 459 | |
| 460 | priv = usb_get_serial_port_data(port); |
| 461 | /* guess how much room is left in the device's ring buffer, and if we |
| 462 | want to send more than that, check first, updating our notion of |
| 463 | what is left. If our write will result in no room left, ask the |
| 464 | device to give us an interrupt when the room available rises above |
| 465 | a threshold, and hold off all writers (eventually, those using |
| 466 | select() or poll() too) until we receive that unthrottle interrupt. |
| 467 | Block if we can't write anything at all, otherwise write as much as |
| 468 | we can. */ |
Alan Cox | 9e70f31 | 2008-07-22 11:13:42 +0100 | [diff] [blame] | 469 | dbg("keyspan_pda_write(%d)", count); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 470 | if (count == 0) { |
| 471 | dbg(" write request of 0 bytes"); |
Alan Cox | 9e70f31 | 2008-07-22 11:13:42 +0100 | [diff] [blame] | 472 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 473 | } |
| 474 | |
| 475 | /* we might block because of: |
| 476 | the TX urb is in-flight (wait until it completes) |
| 477 | the device is full (wait until it says there is room) |
| 478 | */ |
Peter Zijlstra | e81ee63 | 2006-09-25 12:51:41 +0200 | [diff] [blame] | 479 | spin_lock_bh(&port->lock); |
Johan Hovold | da280e3 | 2011-11-06 19:06:24 +0100 | [diff] [blame] | 480 | if (!test_bit(0, &port->write_urbs_free) || priv->tx_throttled) { |
Peter Zijlstra | e81ee63 | 2006-09-25 12:51:41 +0200 | [diff] [blame] | 481 | spin_unlock_bh(&port->lock); |
Greg Kroah-Hartman | 507ca9b | 2005-04-23 12:49:16 -0700 | [diff] [blame] | 482 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 483 | } |
Johan Hovold | da280e3 | 2011-11-06 19:06:24 +0100 | [diff] [blame] | 484 | clear_bit(0, &port->write_urbs_free); |
Peter Zijlstra | e81ee63 | 2006-09-25 12:51:41 +0200 | [diff] [blame] | 485 | spin_unlock_bh(&port->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 486 | |
| 487 | /* At this point the URB is in our control, nobody else can submit it |
| 488 | again (the only sudden transition was the one from EINPROGRESS to |
| 489 | finished). Also, the tx process is not throttled. So we are |
| 490 | ready to write. */ |
| 491 | |
| 492 | count = (count > port->bulk_out_size) ? port->bulk_out_size : count; |
| 493 | |
| 494 | /* Check if we might overrun the Tx buffer. If so, ask the |
| 495 | device how much room it really has. This is done only on |
| 496 | scheduler time, since usb_control_msg() sleeps. */ |
| 497 | if (count > priv->tx_room && !in_interrupt()) { |
Johan Hovold | ca65d25 | 2009-12-28 23:01:51 +0100 | [diff] [blame] | 498 | u8 *room; |
| 499 | |
| 500 | room = kmalloc(1, GFP_KERNEL); |
| 501 | if (!room) { |
| 502 | rc = -ENOMEM; |
| 503 | goto exit; |
| 504 | } |
| 505 | |
Alan Cox | 9e70f31 | 2008-07-22 11:13:42 +0100 | [diff] [blame] | 506 | rc = usb_control_msg(serial->dev, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 507 | usb_rcvctrlpipe(serial->dev, 0), |
| 508 | 6, /* write_room */ |
| 509 | USB_TYPE_VENDOR | USB_RECIP_INTERFACE |
| 510 | | USB_DIR_IN, |
| 511 | 0, /* value: 0 means "remaining room" */ |
| 512 | 0, /* index */ |
Johan Hovold | ca65d25 | 2009-12-28 23:01:51 +0100 | [diff] [blame] | 513 | room, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 514 | 1, |
| 515 | 2000); |
Johan Hovold | ca65d25 | 2009-12-28 23:01:51 +0100 | [diff] [blame] | 516 | if (rc > 0) { |
| 517 | dbg(" roomquery says %d", *room); |
| 518 | priv->tx_room = *room; |
| 519 | } |
| 520 | kfree(room); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 521 | if (rc < 0) { |
| 522 | dbg(" roomquery failed"); |
| 523 | goto exit; |
| 524 | } |
| 525 | if (rc == 0) { |
| 526 | dbg(" roomquery returned 0 bytes"); |
| 527 | rc = -EIO; /* device didn't return any data */ |
| 528 | goto exit; |
| 529 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 530 | } |
| 531 | if (count > priv->tx_room) { |
| 532 | /* we're about to completely fill the Tx buffer, so |
| 533 | we'll be throttled afterwards. */ |
| 534 | count = priv->tx_room; |
| 535 | request_unthrottle = 1; |
| 536 | } |
| 537 | |
| 538 | if (count) { |
| 539 | /* now transfer data */ |
Alan Cox | 9e70f31 | 2008-07-22 11:13:42 +0100 | [diff] [blame] | 540 | memcpy(port->write_urb->transfer_buffer, buf, count); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 541 | /* send the data out the bulk port */ |
| 542 | port->write_urb->transfer_buffer_length = count; |
Greg Kroah-Hartman | 507ca9b | 2005-04-23 12:49:16 -0700 | [diff] [blame] | 543 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 544 | priv->tx_room -= count; |
| 545 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 546 | rc = usb_submit_urb(port->write_urb, GFP_ATOMIC); |
| 547 | if (rc) { |
| 548 | dbg(" usb_submit_urb(write bulk) failed"); |
| 549 | goto exit; |
| 550 | } |
Alan Cox | 9e70f31 | 2008-07-22 11:13:42 +0100 | [diff] [blame] | 551 | } else { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 552 | /* There wasn't any room left, so we are throttled until |
| 553 | the buffer empties a bit */ |
| 554 | request_unthrottle = 1; |
| 555 | } |
| 556 | |
| 557 | if (request_unthrottle) { |
| 558 | priv->tx_throttled = 1; /* block writers */ |
| 559 | schedule_work(&priv->unthrottle_work); |
| 560 | } |
| 561 | |
| 562 | rc = count; |
| 563 | exit: |
Greg Kroah-Hartman | 507ca9b | 2005-04-23 12:49:16 -0700 | [diff] [blame] | 564 | if (rc < 0) |
Johan Hovold | da280e3 | 2011-11-06 19:06:24 +0100 | [diff] [blame] | 565 | set_bit(0, &port->write_urbs_free); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 566 | return rc; |
| 567 | } |
| 568 | |
| 569 | |
Alan Cox | 9e70f31 | 2008-07-22 11:13:42 +0100 | [diff] [blame] | 570 | static void keyspan_pda_write_bulk_callback(struct urb *urb) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 571 | { |
Ming Lei | cdc9779 | 2008-02-24 18:41:47 +0800 | [diff] [blame] | 572 | struct usb_serial_port *port = urb->context; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 573 | struct keyspan_pda_private *priv; |
| 574 | |
Johan Hovold | da280e3 | 2011-11-06 19:06:24 +0100 | [diff] [blame] | 575 | set_bit(0, &port->write_urbs_free); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 576 | priv = usb_get_serial_port_data(port); |
| 577 | |
| 578 | /* queue up a wakeup at scheduler time */ |
| 579 | schedule_work(&priv->wakeup_work); |
| 580 | } |
| 581 | |
| 582 | |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 583 | static int keyspan_pda_write_room(struct tty_struct *tty) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 584 | { |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 585 | struct usb_serial_port *port = tty->driver_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 586 | struct keyspan_pda_private *priv; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 587 | priv = usb_get_serial_port_data(port); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 588 | /* used by n_tty.c for processing of tabs and such. Giving it our |
| 589 | conservative guess is probably good enough, but needs testing by |
| 590 | running a console through the device. */ |
Alan Cox | 9e70f31 | 2008-07-22 11:13:42 +0100 | [diff] [blame] | 591 | return priv->tx_room; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 592 | } |
| 593 | |
| 594 | |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 595 | static int keyspan_pda_chars_in_buffer(struct tty_struct *tty) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 596 | { |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 597 | struct usb_serial_port *port = tty->driver_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 598 | struct keyspan_pda_private *priv; |
Alan Cox | a5b6f60 | 2008-04-08 17:16:06 +0100 | [diff] [blame] | 599 | unsigned long flags; |
| 600 | int ret = 0; |
Greg Kroah-Hartman | 507ca9b | 2005-04-23 12:49:16 -0700 | [diff] [blame] | 601 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 602 | priv = usb_get_serial_port_data(port); |
Greg Kroah-Hartman | 507ca9b | 2005-04-23 12:49:16 -0700 | [diff] [blame] | 603 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 604 | /* when throttled, return at least WAKEUP_CHARS to tell select() (via |
| 605 | n_tty.c:normal_poll() ) that we're not writeable. */ |
Alan Cox | a5b6f60 | 2008-04-08 17:16:06 +0100 | [diff] [blame] | 606 | |
| 607 | spin_lock_irqsave(&port->lock, flags); |
Johan Hovold | da280e3 | 2011-11-06 19:06:24 +0100 | [diff] [blame] | 608 | if (!test_bit(0, &port->write_urbs_free) || priv->tx_throttled) |
Alan Cox | a5b6f60 | 2008-04-08 17:16:06 +0100 | [diff] [blame] | 609 | ret = 256; |
| 610 | spin_unlock_irqrestore(&port->lock, flags); |
| 611 | return ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 612 | } |
| 613 | |
| 614 | |
Alan Cox | 335f851 | 2009-06-11 12:26:29 +0100 | [diff] [blame] | 615 | static void keyspan_pda_dtr_rts(struct usb_serial_port *port, int on) |
| 616 | { |
| 617 | struct usb_serial *serial = port->serial; |
| 618 | |
| 619 | if (serial->dev) { |
| 620 | if (on) |
| 621 | keyspan_pda_set_modem_info(serial, (1<<7) | (1<< 2)); |
| 622 | else |
| 623 | keyspan_pda_set_modem_info(serial, 0); |
| 624 | } |
| 625 | } |
| 626 | |
Alan Cox | 335f851 | 2009-06-11 12:26:29 +0100 | [diff] [blame] | 627 | |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 628 | static int keyspan_pda_open(struct tty_struct *tty, |
Alan Cox | a509a7e | 2009-09-19 13:13:26 -0700 | [diff] [blame] | 629 | struct usb_serial_port *port) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 630 | { |
| 631 | struct usb_serial *serial = port->serial; |
Johan Hovold | ca65d25 | 2009-12-28 23:01:51 +0100 | [diff] [blame] | 632 | u8 *room; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 633 | int rc = 0; |
| 634 | struct keyspan_pda_private *priv; |
| 635 | |
| 636 | /* find out how much room is in the Tx ring */ |
Johan Hovold | ca65d25 | 2009-12-28 23:01:51 +0100 | [diff] [blame] | 637 | room = kmalloc(1, GFP_KERNEL); |
| 638 | if (!room) |
| 639 | return -ENOMEM; |
| 640 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 641 | rc = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), |
| 642 | 6, /* write_room */ |
| 643 | USB_TYPE_VENDOR | USB_RECIP_INTERFACE |
| 644 | | USB_DIR_IN, |
| 645 | 0, /* value */ |
| 646 | 0, /* index */ |
Johan Hovold | ca65d25 | 2009-12-28 23:01:51 +0100 | [diff] [blame] | 647 | room, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 648 | 1, |
| 649 | 2000); |
| 650 | if (rc < 0) { |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 651 | dbg("%s - roomquery failed", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 652 | goto error; |
| 653 | } |
| 654 | if (rc == 0) { |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 655 | dbg("%s - roomquery returned 0 bytes", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 656 | rc = -EIO; |
| 657 | goto error; |
| 658 | } |
| 659 | priv = usb_get_serial_port_data(port); |
Johan Hovold | ca65d25 | 2009-12-28 23:01:51 +0100 | [diff] [blame] | 660 | priv->tx_room = *room; |
| 661 | priv->tx_throttled = *room ? 0 : 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 662 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 663 | /*Start reading from the device*/ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 664 | rc = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL); |
| 665 | if (rc) { |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 666 | dbg("%s - usb_submit_urb(read int) failed", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 667 | goto error; |
| 668 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 669 | error: |
Johan Hovold | ca65d25 | 2009-12-28 23:01:51 +0100 | [diff] [blame] | 670 | kfree(room); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 671 | return rc; |
| 672 | } |
Alan Cox | 335f851 | 2009-06-11 12:26:29 +0100 | [diff] [blame] | 673 | static void keyspan_pda_close(struct usb_serial_port *port) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 674 | { |
| 675 | struct usb_serial *serial = port->serial; |
| 676 | |
| 677 | if (serial->dev) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 678 | /* shutdown our bulk reads and writes */ |
| 679 | usb_kill_urb(port->write_urb); |
| 680 | usb_kill_urb(port->interrupt_in_urb); |
| 681 | } |
| 682 | } |
| 683 | |
| 684 | |
| 685 | /* download the firmware to a "fake" device (pre-renumeration) */ |
Alan Cox | 9e70f31 | 2008-07-22 11:13:42 +0100 | [diff] [blame] | 686 | static int keyspan_pda_fake_startup(struct usb_serial *serial) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 687 | { |
| 688 | int response; |
David Woodhouse | 3edbf98 | 2008-05-30 15:15:13 +0300 | [diff] [blame] | 689 | const char *fw_name; |
| 690 | const struct ihex_binrec *record; |
| 691 | const struct firmware *fw; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 692 | |
| 693 | /* download the firmware here ... */ |
| 694 | response = ezusb_set_reset(serial, 1); |
| 695 | |
David Woodhouse | 3edbf98 | 2008-05-30 15:15:13 +0300 | [diff] [blame] | 696 | if (0) { ; } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 697 | #ifdef KEYSPAN |
David Woodhouse | 3edbf98 | 2008-05-30 15:15:13 +0300 | [diff] [blame] | 698 | else if (le16_to_cpu(serial->dev->descriptor.idVendor) == KEYSPAN_VENDOR_ID) |
| 699 | fw_name = "keyspan_pda/keyspan_pda.fw"; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 700 | #endif |
| 701 | #ifdef XIRCOM |
David Woodhouse | 3edbf98 | 2008-05-30 15:15:13 +0300 | [diff] [blame] | 702 | else if ((le16_to_cpu(serial->dev->descriptor.idVendor) == XIRCOM_VENDOR_ID) || |
| 703 | (le16_to_cpu(serial->dev->descriptor.idVendor) == ENTREGRA_VENDOR_ID)) |
| 704 | fw_name = "keyspan_pda/xircom_pgs.fw"; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 705 | #endif |
David Woodhouse | 3edbf98 | 2008-05-30 15:15:13 +0300 | [diff] [blame] | 706 | else { |
Greg Kroah-Hartman | 194343d | 2008-08-20 16:56:34 -0700 | [diff] [blame] | 707 | dev_err(&serial->dev->dev, "%s: unknown vendor, aborting.\n", |
| 708 | __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 709 | return -ENODEV; |
| 710 | } |
David Woodhouse | 3edbf98 | 2008-05-30 15:15:13 +0300 | [diff] [blame] | 711 | if (request_ihex_firmware(&fw, fw_name, &serial->dev->dev)) { |
Greg Kroah-Hartman | 194343d | 2008-08-20 16:56:34 -0700 | [diff] [blame] | 712 | dev_err(&serial->dev->dev, "failed to load firmware \"%s\"\n", |
| 713 | fw_name); |
David Woodhouse | 3edbf98 | 2008-05-30 15:15:13 +0300 | [diff] [blame] | 714 | return -ENOENT; |
| 715 | } |
| 716 | record = (const struct ihex_binrec *)fw->data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 717 | |
David Woodhouse | 3edbf98 | 2008-05-30 15:15:13 +0300 | [diff] [blame] | 718 | while (record) { |
| 719 | response = ezusb_writememory(serial, be32_to_cpu(record->addr), |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 720 | (unsigned char *)record->data, |
David Woodhouse | 3edbf98 | 2008-05-30 15:15:13 +0300 | [diff] [blame] | 721 | be16_to_cpu(record->len), 0xa0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 722 | if (response < 0) { |
Greg Kroah-Hartman | 194343d | 2008-08-20 16:56:34 -0700 | [diff] [blame] | 723 | dev_err(&serial->dev->dev, "ezusb_writememory failed " |
| 724 | "for Keyspan PDA firmware (%d %04X %p %d)\n", |
| 725 | response, be32_to_cpu(record->addr), |
| 726 | record->data, be16_to_cpu(record->len)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 727 | break; |
| 728 | } |
David Woodhouse | 3edbf98 | 2008-05-30 15:15:13 +0300 | [diff] [blame] | 729 | record = ihex_next_binrec(record); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 730 | } |
David Woodhouse | 3edbf98 | 2008-05-30 15:15:13 +0300 | [diff] [blame] | 731 | release_firmware(fw); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 732 | /* bring device out of reset. Renumeration will occur in a moment |
| 733 | and the new device will bind to the real driver */ |
| 734 | response = ezusb_set_reset(serial, 0); |
| 735 | |
| 736 | /* we want this device to fail to have a driver assigned to it. */ |
Alan Cox | 9e70f31 | 2008-07-22 11:13:42 +0100 | [diff] [blame] | 737 | return 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 738 | } |
| 739 | |
Ben Hutchings | e6c4ef9 | 2010-01-13 23:34:18 +0000 | [diff] [blame] | 740 | #ifdef KEYSPAN |
| 741 | MODULE_FIRMWARE("keyspan_pda/keyspan_pda.fw"); |
| 742 | #endif |
| 743 | #ifdef XIRCOM |
| 744 | MODULE_FIRMWARE("keyspan_pda/xircom_pgs.fw"); |
| 745 | #endif |
| 746 | |
Alan Cox | 9e70f31 | 2008-07-22 11:13:42 +0100 | [diff] [blame] | 747 | static int keyspan_pda_startup(struct usb_serial *serial) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 748 | { |
| 749 | |
| 750 | struct keyspan_pda_private *priv; |
| 751 | |
| 752 | /* allocate the private data structures for all ports. Well, for all |
| 753 | one ports. */ |
| 754 | |
| 755 | priv = kmalloc(sizeof(struct keyspan_pda_private), GFP_KERNEL); |
| 756 | if (!priv) |
Alan Cox | 9e70f31 | 2008-07-22 11:13:42 +0100 | [diff] [blame] | 757 | return 1; /* error */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 758 | usb_set_serial_port_data(serial->port[0], priv); |
| 759 | init_waitqueue_head(&serial->port[0]->write_wait); |
David Howells | c402895 | 2006-11-22 14:57:56 +0000 | [diff] [blame] | 760 | INIT_WORK(&priv->wakeup_work, keyspan_pda_wakeup_write); |
| 761 | INIT_WORK(&priv->unthrottle_work, keyspan_pda_request_unthrottle); |
| 762 | priv->serial = serial; |
| 763 | priv->port = serial->port[0]; |
Alan Cox | 9e70f31 | 2008-07-22 11:13:42 +0100 | [diff] [blame] | 764 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 765 | } |
| 766 | |
Alan Stern | f9c99bb | 2009-06-02 11:53:55 -0400 | [diff] [blame] | 767 | static void keyspan_pda_release(struct usb_serial *serial) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 768 | { |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 769 | dbg("%s", __func__); |
Alan Cox | 9e70f31 | 2008-07-22 11:13:42 +0100 | [diff] [blame] | 770 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 771 | kfree(usb_get_serial_port_data(serial->port[0])); |
| 772 | } |
| 773 | |
| 774 | #ifdef KEYSPAN |
Greg Kroah-Hartman | ea65370 | 2005-06-20 21:15:16 -0700 | [diff] [blame] | 775 | static struct usb_serial_driver keyspan_pda_fake_device = { |
Greg Kroah-Hartman | 18fcac3 | 2005-06-20 21:15:16 -0700 | [diff] [blame] | 776 | .driver = { |
| 777 | .owner = THIS_MODULE, |
Greg Kroah-Hartman | 269bda1 | 2005-06-20 21:15:16 -0700 | [diff] [blame] | 778 | .name = "keyspan_pda_pre", |
Greg Kroah-Hartman | 18fcac3 | 2005-06-20 21:15:16 -0700 | [diff] [blame] | 779 | }, |
Greg Kroah-Hartman | 269bda1 | 2005-06-20 21:15:16 -0700 | [diff] [blame] | 780 | .description = "Keyspan PDA - (prerenumeration)", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 781 | .id_table = id_table_fake, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 782 | .num_ports = 1, |
| 783 | .attach = keyspan_pda_fake_startup, |
| 784 | }; |
| 785 | #endif |
| 786 | |
| 787 | #ifdef XIRCOM |
Greg Kroah-Hartman | ea65370 | 2005-06-20 21:15:16 -0700 | [diff] [blame] | 788 | static struct usb_serial_driver xircom_pgs_fake_device = { |
Greg Kroah-Hartman | 18fcac3 | 2005-06-20 21:15:16 -0700 | [diff] [blame] | 789 | .driver = { |
| 790 | .owner = THIS_MODULE, |
Greg Kroah-Hartman | 269bda1 | 2005-06-20 21:15:16 -0700 | [diff] [blame] | 791 | .name = "xircom_no_firm", |
Greg Kroah-Hartman | 18fcac3 | 2005-06-20 21:15:16 -0700 | [diff] [blame] | 792 | }, |
Greg Kroah-Hartman | 269bda1 | 2005-06-20 21:15:16 -0700 | [diff] [blame] | 793 | .description = "Xircom / Entregra PGS - (prerenumeration)", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 794 | .id_table = id_table_fake_xircom, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 795 | .num_ports = 1, |
| 796 | .attach = keyspan_pda_fake_startup, |
| 797 | }; |
| 798 | #endif |
| 799 | |
Greg Kroah-Hartman | ea65370 | 2005-06-20 21:15:16 -0700 | [diff] [blame] | 800 | static struct usb_serial_driver keyspan_pda_device = { |
Greg Kroah-Hartman | 18fcac3 | 2005-06-20 21:15:16 -0700 | [diff] [blame] | 801 | .driver = { |
| 802 | .owner = THIS_MODULE, |
Greg Kroah-Hartman | 269bda1 | 2005-06-20 21:15:16 -0700 | [diff] [blame] | 803 | .name = "keyspan_pda", |
Greg Kroah-Hartman | 18fcac3 | 2005-06-20 21:15:16 -0700 | [diff] [blame] | 804 | }, |
Greg Kroah-Hartman | 269bda1 | 2005-06-20 21:15:16 -0700 | [diff] [blame] | 805 | .description = "Keyspan PDA", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 806 | .id_table = id_table_std, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 807 | .num_ports = 1, |
Alan Cox | 335f851 | 2009-06-11 12:26:29 +0100 | [diff] [blame] | 808 | .dtr_rts = keyspan_pda_dtr_rts, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 809 | .open = keyspan_pda_open, |
| 810 | .close = keyspan_pda_close, |
| 811 | .write = keyspan_pda_write, |
| 812 | .write_room = keyspan_pda_write_room, |
| 813 | .write_bulk_callback = keyspan_pda_write_bulk_callback, |
| 814 | .read_int_callback = keyspan_pda_rx_interrupt, |
| 815 | .chars_in_buffer = keyspan_pda_chars_in_buffer, |
| 816 | .throttle = keyspan_pda_rx_throttle, |
| 817 | .unthrottle = keyspan_pda_rx_unthrottle, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 818 | .set_termios = keyspan_pda_set_termios, |
| 819 | .break_ctl = keyspan_pda_break_ctl, |
| 820 | .tiocmget = keyspan_pda_tiocmget, |
| 821 | .tiocmset = keyspan_pda_tiocmset, |
| 822 | .attach = keyspan_pda_startup, |
Alan Stern | f9c99bb | 2009-06-02 11:53:55 -0400 | [diff] [blame] | 823 | .release = keyspan_pda_release, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 824 | }; |
| 825 | |
Greg Kroah-Hartman | 8c49fc9 | 2012-02-24 12:49:34 -0800 | [diff] [blame] | 826 | static struct usb_serial_driver * const serial_drivers[] = { |
| 827 | &keyspan_pda_device, |
| 828 | #ifdef KEYSPAN |
| 829 | &keyspan_pda_fake_device, |
| 830 | #endif |
| 831 | #ifdef XIRCOM |
| 832 | &xircom_pgs_fake_device, |
| 833 | #endif |
| 834 | NULL |
| 835 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 836 | |
Greg Kroah-Hartman | d40f5b0 | 2012-02-28 13:11:59 -0800 | [diff] [blame] | 837 | module_usb_serial_driver(keyspan_pda_driver, serial_drivers); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 838 | |
Alan Cox | 9e70f31 | 2008-07-22 11:13:42 +0100 | [diff] [blame] | 839 | MODULE_AUTHOR(DRIVER_AUTHOR); |
| 840 | MODULE_DESCRIPTION(DRIVER_DESC); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 841 | MODULE_LICENSE("GPL"); |
| 842 | |
| 843 | module_param(debug, bool, S_IRUGO | S_IWUSR); |
| 844 | MODULE_PARM_DESC(debug, "Debug enabled or not"); |