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 |
| 15 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 16 | * (09/07/2001) gkh |
| 17 | * cleaned up the Xircom support. Added ids for Entregra device which is |
| 18 | * the same as the Xircom device. Enabled the code to be compiled for |
| 19 | * either Xircom or Keyspan devices. |
| 20 | * |
| 21 | * (08/11/2001) Cristian M. Craciunescu |
| 22 | * support for Xircom PGSDB9 |
| 23 | * |
| 24 | * (05/31/2001) gkh |
Alan Cox | 9e70f31 | 2008-07-22 11:13:42 +0100 | [diff] [blame] | 25 | * switched from using spinlock to a semaphore, which fixes lots of |
| 26 | * problems. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 27 | * |
| 28 | * (04/08/2001) gb |
| 29 | * Identify version on module load. |
Alan Cox | 9e70f31 | 2008-07-22 11:13:42 +0100 | [diff] [blame] | 30 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 31 | * (11/01/2000) Adam J. Richter |
| 32 | * usb_device_id table support |
Alan Cox | 9e70f31 | 2008-07-22 11:13:42 +0100 | [diff] [blame] | 33 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 34 | * (10/05/2000) gkh |
| 35 | * Fixed bug with urb->dev not being set properly, now that the usb |
| 36 | * core needs it. |
Alan Cox | 9e70f31 | 2008-07-22 11:13:42 +0100 | [diff] [blame] | 37 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 38 | * (08/28/2000) gkh |
| 39 | * Added locks for SMP safeness. |
Alan Cox | 9e70f31 | 2008-07-22 11:13:42 +0100 | [diff] [blame] | 40 | * Fixed MOD_INC and MOD_DEC logic and the ability to open a port more |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 41 | * than once. |
Alan Cox | 9e70f31 | 2008-07-22 11:13:42 +0100 | [diff] [blame] | 42 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 43 | * (07/20/2000) borchers |
| 44 | * - keyspan_pda_write no longer sleeps if it is called on interrupt time; |
| 45 | * PPP and the line discipline with stty echo on can call write on |
| 46 | * interrupt time and this would cause an oops if write slept |
| 47 | * - if keyspan_pda_write is in an interrupt, it will not call |
| 48 | * usb_control_msg (which sleeps) to query the room in the device |
| 49 | * buffer, it simply uses the current room value it has |
| 50 | * - if the urb is busy or if it is throttled keyspan_pda_write just |
| 51 | * returns 0, rather than sleeping to wait for this to change; the |
| 52 | * write_chan code in n_tty.c will sleep if needed before calling |
| 53 | * keyspan_pda_write again |
| 54 | * - if the device needs to be unthrottled, write now queues up the |
| 55 | * call to usb_control_msg (which sleeps) to unthrottle the device |
| 56 | * - the wakeups from keyspan_pda_write_bulk_callback are queued rather |
| 57 | * than done directly from the callback to avoid the race in write_chan |
| 58 | * - keyspan_pda_chars_in_buffer also indicates its buffer is full if the |
| 59 | * urb status is -EINPROGRESS, meaning it cannot write at the moment |
Alan Cox | 9e70f31 | 2008-07-22 11:13:42 +0100 | [diff] [blame] | 60 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 61 | * (07/19/2000) gkh |
| 62 | * Added module_init and module_exit functions to handle the fact that this |
| 63 | * driver is a loadable module now. |
| 64 | * |
| 65 | * (03/26/2000) gkh |
| 66 | * Split driver up into device specific pieces. |
Alan Cox | 9e70f31 | 2008-07-22 11:13:42 +0100 | [diff] [blame] | 67 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 68 | */ |
| 69 | |
| 70 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 71 | #include <linux/kernel.h> |
| 72 | #include <linux/errno.h> |
| 73 | #include <linux/init.h> |
| 74 | #include <linux/slab.h> |
| 75 | #include <linux/tty.h> |
| 76 | #include <linux/tty_driver.h> |
| 77 | #include <linux/tty_flip.h> |
| 78 | #include <linux/module.h> |
| 79 | #include <linux/spinlock.h> |
| 80 | #include <linux/workqueue.h> |
David Woodhouse | 3edbf98 | 2008-05-30 15:15:13 +0300 | [diff] [blame] | 81 | #include <linux/firmware.h> |
| 82 | #include <linux/ihex.h> |
Alan Cox | 9e70f31 | 2008-07-22 11:13:42 +0100 | [diff] [blame] | 83 | #include <linux/uaccess.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 84 | #include <linux/usb.h> |
Greg Kroah-Hartman | a969888 | 2006-07-11 21:22:58 -0700 | [diff] [blame] | 85 | #include <linux/usb/serial.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 86 | |
| 87 | static int debug; |
| 88 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 89 | /* make a simple define to handle if we are compiling keyspan_pda or xircom support */ |
| 90 | #if defined(CONFIG_USB_SERIAL_KEYSPAN_PDA) || defined(CONFIG_USB_SERIAL_KEYSPAN_PDA_MODULE) |
| 91 | #define KEYSPAN |
| 92 | #else |
| 93 | #undef KEYSPAN |
| 94 | #endif |
| 95 | #if defined(CONFIG_USB_SERIAL_XIRCOM) || defined(CONFIG_USB_SERIAL_XIRCOM_MODULE) |
| 96 | #define XIRCOM |
| 97 | #else |
| 98 | #undef XIRCOM |
| 99 | #endif |
| 100 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 101 | /* |
| 102 | * Version Information |
| 103 | */ |
| 104 | #define DRIVER_VERSION "v1.1" |
| 105 | #define DRIVER_AUTHOR "Brian Warner <warner@lothar.com>" |
| 106 | #define DRIVER_DESC "USB Keyspan PDA Converter driver" |
| 107 | |
| 108 | struct keyspan_pda_private { |
| 109 | int tx_room; |
| 110 | int tx_throttled; |
| 111 | struct work_struct wakeup_work; |
| 112 | struct work_struct unthrottle_work; |
David Howells | c402895 | 2006-11-22 14:57:56 +0000 | [diff] [blame] | 113 | struct usb_serial *serial; |
| 114 | struct usb_serial_port *port; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 115 | }; |
| 116 | |
| 117 | |
| 118 | #define KEYSPAN_VENDOR_ID 0x06cd |
| 119 | #define KEYSPAN_PDA_FAKE_ID 0x0103 |
| 120 | #define KEYSPAN_PDA_ID 0x0104 /* no clue */ |
| 121 | |
| 122 | /* For Xircom PGSDB9 and older Entregra version of the same device */ |
| 123 | #define XIRCOM_VENDOR_ID 0x085a |
| 124 | #define XIRCOM_FAKE_ID 0x8027 |
| 125 | #define ENTREGRA_VENDOR_ID 0x1645 |
| 126 | #define ENTREGRA_FAKE_ID 0x8093 |
| 127 | |
| 128 | static struct usb_device_id id_table_combined [] = { |
| 129 | #ifdef KEYSPAN |
| 130 | { USB_DEVICE(KEYSPAN_VENDOR_ID, KEYSPAN_PDA_FAKE_ID) }, |
| 131 | #endif |
| 132 | #ifdef XIRCOM |
| 133 | { USB_DEVICE(XIRCOM_VENDOR_ID, XIRCOM_FAKE_ID) }, |
| 134 | { USB_DEVICE(ENTREGRA_VENDOR_ID, ENTREGRA_FAKE_ID) }, |
| 135 | #endif |
| 136 | { USB_DEVICE(KEYSPAN_VENDOR_ID, KEYSPAN_PDA_ID) }, |
| 137 | { } /* Terminating entry */ |
| 138 | }; |
| 139 | |
Alan Cox | 9e70f31 | 2008-07-22 11:13:42 +0100 | [diff] [blame] | 140 | MODULE_DEVICE_TABLE(usb, id_table_combined); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 141 | |
| 142 | static struct usb_driver keyspan_pda_driver = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 143 | .name = "keyspan_pda", |
| 144 | .probe = usb_serial_probe, |
| 145 | .disconnect = usb_serial_disconnect, |
| 146 | .id_table = id_table_combined, |
Greg Kroah-Hartman | ba9dc65 | 2005-11-16 13:41:28 -0800 | [diff] [blame] | 147 | .no_dynamic_id = 1, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 148 | }; |
| 149 | |
| 150 | static struct usb_device_id id_table_std [] = { |
| 151 | { USB_DEVICE(KEYSPAN_VENDOR_ID, KEYSPAN_PDA_ID) }, |
| 152 | { } /* Terminating entry */ |
| 153 | }; |
| 154 | |
| 155 | #ifdef KEYSPAN |
| 156 | static struct usb_device_id id_table_fake [] = { |
| 157 | { USB_DEVICE(KEYSPAN_VENDOR_ID, KEYSPAN_PDA_FAKE_ID) }, |
| 158 | { } /* Terminating entry */ |
| 159 | }; |
| 160 | #endif |
| 161 | |
| 162 | #ifdef XIRCOM |
| 163 | static struct usb_device_id id_table_fake_xircom [] = { |
Alan Cox | 9e70f31 | 2008-07-22 11:13:42 +0100 | [diff] [blame] | 164 | { USB_DEVICE(XIRCOM_VENDOR_ID, XIRCOM_FAKE_ID) }, |
| 165 | { USB_DEVICE(ENTREGRA_VENDOR_ID, ENTREGRA_FAKE_ID) }, |
| 166 | { } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 167 | }; |
| 168 | #endif |
| 169 | |
David Howells | c402895 | 2006-11-22 14:57:56 +0000 | [diff] [blame] | 170 | static void keyspan_pda_wakeup_write(struct work_struct *work) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 171 | { |
David Howells | c402895 | 2006-11-22 14:57:56 +0000 | [diff] [blame] | 172 | struct keyspan_pda_private *priv = |
| 173 | container_of(work, struct keyspan_pda_private, wakeup_work); |
| 174 | struct usb_serial_port *port = priv->port; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 175 | |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 176 | tty_wakeup(port->port.tty); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 177 | } |
| 178 | |
David Howells | c402895 | 2006-11-22 14:57:56 +0000 | [diff] [blame] | 179 | static void keyspan_pda_request_unthrottle(struct work_struct *work) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 180 | { |
David Howells | c402895 | 2006-11-22 14:57:56 +0000 | [diff] [blame] | 181 | struct keyspan_pda_private *priv = |
| 182 | container_of(work, struct keyspan_pda_private, unthrottle_work); |
| 183 | struct usb_serial *serial = priv->serial; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 184 | int result; |
| 185 | |
| 186 | dbg(" request_unthrottle"); |
| 187 | /* ask the device to tell us when the tx buffer becomes |
| 188 | sufficiently empty */ |
Alan Cox | 9e70f31 | 2008-07-22 11:13:42 +0100 | [diff] [blame] | 189 | result = usb_control_msg(serial->dev, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 190 | usb_sndctrlpipe(serial->dev, 0), |
| 191 | 7, /* request_unthrottle */ |
| 192 | USB_TYPE_VENDOR | USB_RECIP_INTERFACE |
| 193 | | USB_DIR_OUT, |
| 194 | 16, /* value: threshold */ |
| 195 | 0, /* index */ |
| 196 | NULL, |
| 197 | 0, |
| 198 | 2000); |
| 199 | if (result < 0) |
Alan Cox | 9e70f31 | 2008-07-22 11:13:42 +0100 | [diff] [blame] | 200 | dbg("%s - error %d from usb_control_msg", |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 201 | __func__, result); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 202 | } |
| 203 | |
| 204 | |
Alan Cox | 9e70f31 | 2008-07-22 11:13:42 +0100 | [diff] [blame] | 205 | static void keyspan_pda_rx_interrupt(struct urb *urb) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 206 | { |
Ming Lei | cdc9779 | 2008-02-24 18:41:47 +0800 | [diff] [blame] | 207 | struct usb_serial_port *port = urb->context; |
Alan Cox | 9e70f31 | 2008-07-22 11:13:42 +0100 | [diff] [blame] | 208 | struct tty_struct *tty = port->port.tty; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 209 | unsigned char *data = urb->transfer_buffer; |
Greg Kroah-Hartman | 23189ae | 2007-06-15 15:44:13 -0700 | [diff] [blame] | 210 | int retval; |
| 211 | int status = urb->status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 212 | struct keyspan_pda_private *priv; |
| 213 | priv = usb_get_serial_port_data(port); |
| 214 | |
Greg Kroah-Hartman | 23189ae | 2007-06-15 15:44:13 -0700 | [diff] [blame] | 215 | switch (status) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 216 | case 0: |
| 217 | /* success */ |
| 218 | break; |
| 219 | case -ECONNRESET: |
| 220 | case -ENOENT: |
| 221 | case -ESHUTDOWN: |
| 222 | /* this urb is terminated, clean up */ |
Greg Kroah-Hartman | 23189ae | 2007-06-15 15:44:13 -0700 | [diff] [blame] | 223 | dbg("%s - urb shutting down with status: %d", |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 224 | __func__, status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 225 | return; |
| 226 | default: |
Greg Kroah-Hartman | 23189ae | 2007-06-15 15:44:13 -0700 | [diff] [blame] | 227 | dbg("%s - nonzero urb status received: %d", |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 228 | __func__, status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 229 | goto exit; |
| 230 | } |
| 231 | |
Alan Cox | 9e70f31 | 2008-07-22 11:13:42 +0100 | [diff] [blame] | 232 | /* see if the message is data or a status interrupt */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 233 | switch (data[0]) { |
| 234 | case 0: |
| 235 | /* rest of message is rx data */ |
| 236 | if (urb->actual_length) { |
Alan Cox | 8dd03a5 | 2008-07-22 11:13:51 +0100 | [diff] [blame] | 237 | tty_insert_flip_string(tty, data + 1, |
| 238 | urb->actual_length - 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 239 | tty_flip_buffer_push(tty); |
| 240 | } |
| 241 | break; |
| 242 | case 1: |
| 243 | /* status interrupt */ |
| 244 | dbg(" rx int, d1=%d, d2=%d", data[1], data[2]); |
| 245 | switch (data[1]) { |
| 246 | case 1: /* modemline change */ |
| 247 | break; |
| 248 | case 2: /* tx unthrottle interrupt */ |
| 249 | priv->tx_throttled = 0; |
| 250 | /* queue up a wakeup at scheduler time */ |
| 251 | schedule_work(&priv->wakeup_work); |
| 252 | break; |
| 253 | default: |
| 254 | break; |
| 255 | } |
| 256 | break; |
| 257 | default: |
| 258 | break; |
| 259 | } |
| 260 | |
| 261 | exit: |
Alan Cox | 9e70f31 | 2008-07-22 11:13:42 +0100 | [diff] [blame] | 262 | retval = usb_submit_urb(urb, GFP_ATOMIC); |
Greg Kroah-Hartman | 23189ae | 2007-06-15 15:44:13 -0700 | [diff] [blame] | 263 | if (retval) |
Alan Cox | 9e70f31 | 2008-07-22 11:13:42 +0100 | [diff] [blame] | 264 | err("%s - usb_submit_urb failed with result %d", |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 265 | __func__, retval); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 266 | } |
| 267 | |
| 268 | |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 269 | static void keyspan_pda_rx_throttle(struct tty_struct *tty) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 270 | { |
| 271 | /* stop receiving characters. We just turn off the URB request, and |
| 272 | let chars pile up in the device. If we're doing hardware |
| 273 | flowcontrol, the device will signal the other end when its buffer |
| 274 | fills up. If we're doing XON/XOFF, this would be a good time to |
| 275 | send an XOFF, although it might make sense to foist that off |
| 276 | upon the device too. */ |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 277 | struct usb_serial_port *port = tty->driver_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 278 | dbg("keyspan_pda_rx_throttle port %d", port->number); |
| 279 | usb_kill_urb(port->interrupt_in_urb); |
| 280 | } |
| 281 | |
| 282 | |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 283 | static void keyspan_pda_rx_unthrottle(struct tty_struct *tty) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 284 | { |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 285 | struct usb_serial_port *port = tty->driver_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 286 | /* just restart the receive interrupt URB */ |
| 287 | dbg("keyspan_pda_rx_unthrottle port %d", port->number); |
| 288 | port->interrupt_in_urb->dev = port->serial->dev; |
| 289 | if (usb_submit_urb(port->interrupt_in_urb, GFP_ATOMIC)) |
| 290 | dbg(" usb_submit_urb(read urb) failed"); |
| 291 | return; |
| 292 | } |
| 293 | |
| 294 | |
Alan Cox | 9e70f31 | 2008-07-22 11:13:42 +0100 | [diff] [blame] | 295 | 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] | 296 | { |
| 297 | int rc; |
| 298 | int bindex; |
| 299 | |
Alan Cox | 9e70f31 | 2008-07-22 11:13:42 +0100 | [diff] [blame] | 300 | switch (baud) { |
| 301 | case 110: |
| 302 | bindex = 0; |
| 303 | break; |
| 304 | case 300: |
| 305 | bindex = 1; |
| 306 | break; |
| 307 | case 1200: |
| 308 | bindex = 2; |
| 309 | break; |
| 310 | case 2400: |
| 311 | bindex = 3; |
| 312 | break; |
| 313 | case 4800: |
| 314 | bindex = 4; |
| 315 | break; |
| 316 | case 9600: |
| 317 | bindex = 5; |
| 318 | break; |
| 319 | case 19200: |
| 320 | bindex = 6; |
| 321 | break; |
| 322 | case 38400: |
| 323 | bindex = 7; |
| 324 | break; |
| 325 | case 57600: |
| 326 | bindex = 8; |
| 327 | break; |
| 328 | case 115200: |
| 329 | bindex = 9; |
| 330 | break; |
| 331 | default: |
| 332 | bindex = 5; /* Default to 9600 */ |
| 333 | baud = 9600; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 334 | } |
| 335 | |
| 336 | /* rather than figure out how to sleep while waiting for this |
| 337 | to complete, I just use the "legacy" API. */ |
| 338 | rc = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), |
| 339 | 0, /* set baud */ |
Alan Cox | 9e70f31 | 2008-07-22 11:13:42 +0100 | [diff] [blame] | 340 | USB_TYPE_VENDOR |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 341 | | USB_RECIP_INTERFACE |
| 342 | | USB_DIR_OUT, /* type */ |
| 343 | bindex, /* value */ |
| 344 | 0, /* index */ |
| 345 | NULL, /* &data */ |
| 346 | 0, /* size */ |
| 347 | 2000); /* timeout */ |
Alan Cox | e7806e3 | 2007-12-13 16:15:28 -0800 | [diff] [blame] | 348 | if (rc < 0) |
| 349 | return 0; |
| 350 | return baud; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 351 | } |
| 352 | |
| 353 | |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 354 | 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] | 355 | { |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 356 | struct usb_serial_port *port = tty->driver_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 357 | struct usb_serial *serial = port->serial; |
| 358 | int value; |
| 359 | int result; |
| 360 | |
| 361 | if (break_state == -1) |
| 362 | value = 1; /* start break */ |
| 363 | else |
| 364 | value = 0; /* clear break */ |
| 365 | result = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), |
Alan Cox | 9e70f31 | 2008-07-22 11:13:42 +0100 | [diff] [blame] | 366 | 4, /* set break */ |
| 367 | USB_TYPE_VENDOR | USB_RECIP_INTERFACE | USB_DIR_OUT, |
| 368 | value, 0, NULL, 0, 2000); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 369 | if (result < 0) |
Alan Cox | 9e70f31 | 2008-07-22 11:13:42 +0100 | [diff] [blame] | 370 | dbg("%s - error %d from usb_control_msg", |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 371 | __func__, result); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 372 | /* there is something funky about this.. the TCSBRK that 'cu' performs |
| 373 | ought to translate into a break_ctl(-1),break_ctl(0) pair HZ/4 |
| 374 | seconds apart, but it feels like the break sent isn't as long as it |
| 375 | is on /dev/ttyS0 */ |
| 376 | } |
| 377 | |
| 378 | |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 379 | static void keyspan_pda_set_termios(struct tty_struct *tty, |
| 380 | struct usb_serial_port *port, struct ktermios *old_termios) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 381 | { |
| 382 | struct usb_serial *serial = port->serial; |
Alan Cox | e7806e3 | 2007-12-13 16:15:28 -0800 | [diff] [blame] | 383 | speed_t speed; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 384 | |
| 385 | /* cflag specifies lots of stuff: number of stop bits, parity, number |
| 386 | of data bits, baud. What can the device actually handle?: |
| 387 | CSTOPB (1 stop bit or 2) |
| 388 | PARENB (parity) |
| 389 | CSIZE (5bit .. 8bit) |
| 390 | There is minimal hw support for parity (a PSW bit seems to hold the |
| 391 | parity of whatever is in the accumulator). The UART either deals |
| 392 | with 10 bits (start, 8 data, stop) or 11 bits (start, 8 data, |
| 393 | 1 special, stop). So, with firmware changes, we could do: |
| 394 | 8N1: 10 bit |
| 395 | 8N2: 11 bit, extra bit always (mark?) |
| 396 | 8[EOMS]1: 11 bit, extra bit is parity |
| 397 | 7[EOMS]1: 10 bit, b0/b7 is parity |
| 398 | 7[EOMS]2: 11 bit, b0/b7 is parity, extra bit always (mark?) |
| 399 | |
| 400 | HW flow control is dictated by the tty->termios->c_cflags & CRTSCTS |
| 401 | bit. |
| 402 | |
| 403 | For now, just do baud. */ |
| 404 | |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 405 | speed = tty_get_baud_rate(tty); |
Alan Cox | e7806e3 | 2007-12-13 16:15:28 -0800 | [diff] [blame] | 406 | speed = keyspan_pda_setbaud(serial, speed); |
| 407 | |
| 408 | if (speed == 0) { |
| 409 | dbg("can't handle requested baud rate"); |
| 410 | /* It hasn't changed so.. */ |
| 411 | speed = tty_termios_baud_rate(old_termios); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 412 | } |
Alan Cox | e7806e3 | 2007-12-13 16:15:28 -0800 | [diff] [blame] | 413 | /* Only speed can change so copy the old h/w parameters |
| 414 | then encode the new speed */ |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 415 | tty_termios_copy_hw(tty->termios, old_termios); |
| 416 | tty_encode_baud_rate(tty, speed, speed); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 417 | } |
| 418 | |
| 419 | |
| 420 | /* modem control pins: DTR and RTS are outputs and can be controlled. |
| 421 | DCD, RI, DSR, CTS are inputs and can be read. All outputs can also be |
| 422 | read. The byte passed is: DTR(b7) DCD RI DSR CTS RTS(b2) unused unused */ |
| 423 | |
| 424 | static int keyspan_pda_get_modem_info(struct usb_serial *serial, |
| 425 | unsigned char *value) |
| 426 | { |
| 427 | int rc; |
| 428 | unsigned char data; |
| 429 | rc = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), |
| 430 | 3, /* get pins */ |
| 431 | USB_TYPE_VENDOR|USB_RECIP_INTERFACE|USB_DIR_IN, |
| 432 | 0, 0, &data, 1, 2000); |
Benny Halevy | 3b36a8f | 2008-06-27 12:22:32 +0300 | [diff] [blame] | 433 | if (rc >= 0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 434 | *value = data; |
| 435 | return rc; |
| 436 | } |
| 437 | |
| 438 | |
| 439 | static int keyspan_pda_set_modem_info(struct usb_serial *serial, |
| 440 | unsigned char value) |
| 441 | { |
| 442 | int rc; |
| 443 | rc = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), |
| 444 | 3, /* set pins */ |
| 445 | USB_TYPE_VENDOR|USB_RECIP_INTERFACE|USB_DIR_OUT, |
| 446 | value, 0, NULL, 0, 2000); |
| 447 | return rc; |
| 448 | } |
| 449 | |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 450 | static int keyspan_pda_tiocmget(struct tty_struct *tty, struct file *file) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 451 | { |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 452 | struct usb_serial_port *port = tty->driver_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 453 | struct usb_serial *serial = port->serial; |
| 454 | int rc; |
| 455 | unsigned char status; |
| 456 | int value; |
| 457 | |
| 458 | rc = keyspan_pda_get_modem_info(serial, &status); |
| 459 | if (rc < 0) |
| 460 | return rc; |
| 461 | value = |
| 462 | ((status & (1<<7)) ? TIOCM_DTR : 0) | |
| 463 | ((status & (1<<6)) ? TIOCM_CAR : 0) | |
| 464 | ((status & (1<<5)) ? TIOCM_RNG : 0) | |
| 465 | ((status & (1<<4)) ? TIOCM_DSR : 0) | |
| 466 | ((status & (1<<3)) ? TIOCM_CTS : 0) | |
| 467 | ((status & (1<<2)) ? TIOCM_RTS : 0); |
| 468 | return value; |
| 469 | } |
| 470 | |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 471 | static int keyspan_pda_tiocmset(struct tty_struct *tty, struct file *file, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 472 | unsigned int set, unsigned int clear) |
| 473 | { |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 474 | struct usb_serial_port *port = tty->driver_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 475 | struct usb_serial *serial = port->serial; |
| 476 | int rc; |
| 477 | unsigned char status; |
| 478 | |
| 479 | rc = keyspan_pda_get_modem_info(serial, &status); |
| 480 | if (rc < 0) |
| 481 | return rc; |
| 482 | |
| 483 | if (set & TIOCM_RTS) |
| 484 | status |= (1<<2); |
| 485 | if (set & TIOCM_DTR) |
| 486 | status |= (1<<7); |
| 487 | |
| 488 | if (clear & TIOCM_RTS) |
| 489 | status &= ~(1<<2); |
| 490 | if (clear & TIOCM_DTR) |
| 491 | status &= ~(1<<7); |
| 492 | rc = keyspan_pda_set_modem_info(serial, status); |
| 493 | return rc; |
| 494 | } |
| 495 | |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 496 | static int keyspan_pda_write(struct tty_struct *tty, |
| 497 | struct usb_serial_port *port, const unsigned char *buf, int count) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 498 | { |
| 499 | struct usb_serial *serial = port->serial; |
| 500 | int request_unthrottle = 0; |
| 501 | int rc = 0; |
| 502 | struct keyspan_pda_private *priv; |
| 503 | |
| 504 | priv = usb_get_serial_port_data(port); |
| 505 | /* guess how much room is left in the device's ring buffer, and if we |
| 506 | want to send more than that, check first, updating our notion of |
| 507 | what is left. If our write will result in no room left, ask the |
| 508 | device to give us an interrupt when the room available rises above |
| 509 | a threshold, and hold off all writers (eventually, those using |
| 510 | select() or poll() too) until we receive that unthrottle interrupt. |
| 511 | Block if we can't write anything at all, otherwise write as much as |
| 512 | we can. */ |
Alan Cox | 9e70f31 | 2008-07-22 11:13:42 +0100 | [diff] [blame] | 513 | dbg("keyspan_pda_write(%d)", count); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 514 | if (count == 0) { |
| 515 | dbg(" write request of 0 bytes"); |
Alan Cox | 9e70f31 | 2008-07-22 11:13:42 +0100 | [diff] [blame] | 516 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 517 | } |
| 518 | |
| 519 | /* we might block because of: |
| 520 | the TX urb is in-flight (wait until it completes) |
| 521 | the device is full (wait until it says there is room) |
| 522 | */ |
Peter Zijlstra | e81ee63 | 2006-09-25 12:51:41 +0200 | [diff] [blame] | 523 | spin_lock_bh(&port->lock); |
Greg Kroah-Hartman | 507ca9b | 2005-04-23 12:49:16 -0700 | [diff] [blame] | 524 | if (port->write_urb_busy || priv->tx_throttled) { |
Peter Zijlstra | e81ee63 | 2006-09-25 12:51:41 +0200 | [diff] [blame] | 525 | spin_unlock_bh(&port->lock); |
Greg Kroah-Hartman | 507ca9b | 2005-04-23 12:49:16 -0700 | [diff] [blame] | 526 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 527 | } |
Greg Kroah-Hartman | 507ca9b | 2005-04-23 12:49:16 -0700 | [diff] [blame] | 528 | port->write_urb_busy = 1; |
Peter Zijlstra | e81ee63 | 2006-09-25 12:51:41 +0200 | [diff] [blame] | 529 | spin_unlock_bh(&port->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 530 | |
| 531 | /* At this point the URB is in our control, nobody else can submit it |
| 532 | again (the only sudden transition was the one from EINPROGRESS to |
| 533 | finished). Also, the tx process is not throttled. So we are |
| 534 | ready to write. */ |
| 535 | |
| 536 | count = (count > port->bulk_out_size) ? port->bulk_out_size : count; |
| 537 | |
| 538 | /* Check if we might overrun the Tx buffer. If so, ask the |
| 539 | device how much room it really has. This is done only on |
| 540 | scheduler time, since usb_control_msg() sleeps. */ |
| 541 | if (count > priv->tx_room && !in_interrupt()) { |
| 542 | unsigned char room; |
Alan Cox | 9e70f31 | 2008-07-22 11:13:42 +0100 | [diff] [blame] | 543 | rc = usb_control_msg(serial->dev, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 544 | usb_rcvctrlpipe(serial->dev, 0), |
| 545 | 6, /* write_room */ |
| 546 | USB_TYPE_VENDOR | USB_RECIP_INTERFACE |
| 547 | | USB_DIR_IN, |
| 548 | 0, /* value: 0 means "remaining room" */ |
| 549 | 0, /* index */ |
| 550 | &room, |
| 551 | 1, |
| 552 | 2000); |
| 553 | if (rc < 0) { |
| 554 | dbg(" roomquery failed"); |
| 555 | goto exit; |
| 556 | } |
| 557 | if (rc == 0) { |
| 558 | dbg(" roomquery returned 0 bytes"); |
| 559 | rc = -EIO; /* device didn't return any data */ |
| 560 | goto exit; |
| 561 | } |
| 562 | dbg(" roomquery says %d", room); |
| 563 | priv->tx_room = room; |
| 564 | } |
| 565 | if (count > priv->tx_room) { |
| 566 | /* we're about to completely fill the Tx buffer, so |
| 567 | we'll be throttled afterwards. */ |
| 568 | count = priv->tx_room; |
| 569 | request_unthrottle = 1; |
| 570 | } |
| 571 | |
| 572 | if (count) { |
| 573 | /* now transfer data */ |
Alan Cox | 9e70f31 | 2008-07-22 11:13:42 +0100 | [diff] [blame] | 574 | memcpy(port->write_urb->transfer_buffer, buf, count); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 575 | /* send the data out the bulk port */ |
| 576 | port->write_urb->transfer_buffer_length = count; |
Greg Kroah-Hartman | 507ca9b | 2005-04-23 12:49:16 -0700 | [diff] [blame] | 577 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 578 | priv->tx_room -= count; |
| 579 | |
| 580 | port->write_urb->dev = port->serial->dev; |
| 581 | rc = usb_submit_urb(port->write_urb, GFP_ATOMIC); |
| 582 | if (rc) { |
| 583 | dbg(" usb_submit_urb(write bulk) failed"); |
| 584 | goto exit; |
| 585 | } |
Alan Cox | 9e70f31 | 2008-07-22 11:13:42 +0100 | [diff] [blame] | 586 | } else { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 587 | /* There wasn't any room left, so we are throttled until |
| 588 | the buffer empties a bit */ |
| 589 | request_unthrottle = 1; |
| 590 | } |
| 591 | |
| 592 | if (request_unthrottle) { |
| 593 | priv->tx_throttled = 1; /* block writers */ |
| 594 | schedule_work(&priv->unthrottle_work); |
| 595 | } |
| 596 | |
| 597 | rc = count; |
| 598 | exit: |
Greg Kroah-Hartman | 507ca9b | 2005-04-23 12:49:16 -0700 | [diff] [blame] | 599 | if (rc < 0) |
| 600 | port->write_urb_busy = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 601 | return rc; |
| 602 | } |
| 603 | |
| 604 | |
Alan Cox | 9e70f31 | 2008-07-22 11:13:42 +0100 | [diff] [blame] | 605 | static void keyspan_pda_write_bulk_callback(struct urb *urb) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 606 | { |
Ming Lei | cdc9779 | 2008-02-24 18:41:47 +0800 | [diff] [blame] | 607 | struct usb_serial_port *port = urb->context; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 608 | struct keyspan_pda_private *priv; |
| 609 | |
Greg Kroah-Hartman | 507ca9b | 2005-04-23 12:49:16 -0700 | [diff] [blame] | 610 | port->write_urb_busy = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 611 | priv = usb_get_serial_port_data(port); |
| 612 | |
| 613 | /* queue up a wakeup at scheduler time */ |
| 614 | schedule_work(&priv->wakeup_work); |
| 615 | } |
| 616 | |
| 617 | |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 618 | static int keyspan_pda_write_room(struct tty_struct *tty) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 619 | { |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 620 | struct usb_serial_port *port = tty->driver_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 621 | struct keyspan_pda_private *priv; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 622 | priv = usb_get_serial_port_data(port); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 623 | /* used by n_tty.c for processing of tabs and such. Giving it our |
| 624 | conservative guess is probably good enough, but needs testing by |
| 625 | running a console through the device. */ |
Alan Cox | 9e70f31 | 2008-07-22 11:13:42 +0100 | [diff] [blame] | 626 | return priv->tx_room; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 627 | } |
| 628 | |
| 629 | |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 630 | static int keyspan_pda_chars_in_buffer(struct tty_struct *tty) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 631 | { |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 632 | struct usb_serial_port *port = tty->driver_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 633 | struct keyspan_pda_private *priv; |
Alan Cox | a5b6f60 | 2008-04-08 17:16:06 +0100 | [diff] [blame] | 634 | unsigned long flags; |
| 635 | int ret = 0; |
Greg Kroah-Hartman | 507ca9b | 2005-04-23 12:49:16 -0700 | [diff] [blame] | 636 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 637 | priv = usb_get_serial_port_data(port); |
Greg Kroah-Hartman | 507ca9b | 2005-04-23 12:49:16 -0700 | [diff] [blame] | 638 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 639 | /* when throttled, return at least WAKEUP_CHARS to tell select() (via |
| 640 | n_tty.c:normal_poll() ) that we're not writeable. */ |
Alan Cox | a5b6f60 | 2008-04-08 17:16:06 +0100 | [diff] [blame] | 641 | |
| 642 | spin_lock_irqsave(&port->lock, flags); |
Greg Kroah-Hartman | 507ca9b | 2005-04-23 12:49:16 -0700 | [diff] [blame] | 643 | if (port->write_urb_busy || priv->tx_throttled) |
Alan Cox | a5b6f60 | 2008-04-08 17:16:06 +0100 | [diff] [blame] | 644 | ret = 256; |
| 645 | spin_unlock_irqrestore(&port->lock, flags); |
| 646 | return ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 647 | } |
| 648 | |
| 649 | |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 650 | static int keyspan_pda_open(struct tty_struct *tty, |
| 651 | struct usb_serial_port *port, struct file *filp) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 652 | { |
| 653 | struct usb_serial *serial = port->serial; |
| 654 | unsigned char room; |
| 655 | int rc = 0; |
| 656 | struct keyspan_pda_private *priv; |
| 657 | |
| 658 | /* find out how much room is in the Tx ring */ |
| 659 | rc = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), |
| 660 | 6, /* write_room */ |
| 661 | USB_TYPE_VENDOR | USB_RECIP_INTERFACE |
| 662 | | USB_DIR_IN, |
| 663 | 0, /* value */ |
| 664 | 0, /* index */ |
| 665 | &room, |
| 666 | 1, |
| 667 | 2000); |
| 668 | if (rc < 0) { |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 669 | dbg("%s - roomquery failed", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 670 | goto error; |
| 671 | } |
| 672 | if (rc == 0) { |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 673 | dbg("%s - roomquery returned 0 bytes", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 674 | rc = -EIO; |
| 675 | goto error; |
| 676 | } |
| 677 | priv = usb_get_serial_port_data(port); |
| 678 | priv->tx_room = room; |
| 679 | priv->tx_throttled = room ? 0 : 1; |
| 680 | |
| 681 | /* the normal serial device seems to always turn on DTR and RTS here, |
| 682 | so do the same */ |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 683 | if (tty && (tty->termios->c_cflag & CBAUD)) |
Alan Cox | 9e70f31 | 2008-07-22 11:13:42 +0100 | [diff] [blame] | 684 | keyspan_pda_set_modem_info(serial, (1<<7) | (1<<2)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 685 | else |
| 686 | keyspan_pda_set_modem_info(serial, 0); |
| 687 | |
| 688 | /*Start reading from the device*/ |
| 689 | port->interrupt_in_urb->dev = serial->dev; |
| 690 | rc = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL); |
| 691 | if (rc) { |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 692 | dbg("%s - usb_submit_urb(read int) failed", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 693 | goto error; |
| 694 | } |
| 695 | |
| 696 | error: |
| 697 | return rc; |
| 698 | } |
| 699 | |
| 700 | |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 701 | static void keyspan_pda_close(struct tty_struct *tty, |
| 702 | struct usb_serial_port *port, struct file *filp) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 703 | { |
| 704 | struct usb_serial *serial = port->serial; |
| 705 | |
| 706 | if (serial->dev) { |
Alan Cox | 9e70f31 | 2008-07-22 11:13:42 +0100 | [diff] [blame] | 707 | /* the normal serial device seems to always shut |
| 708 | off DTR and RTS now */ |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 709 | if (tty->termios->c_cflag & HUPCL) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 710 | keyspan_pda_set_modem_info(serial, 0); |
| 711 | |
| 712 | /* shutdown our bulk reads and writes */ |
| 713 | usb_kill_urb(port->write_urb); |
| 714 | usb_kill_urb(port->interrupt_in_urb); |
| 715 | } |
| 716 | } |
| 717 | |
| 718 | |
| 719 | /* download the firmware to a "fake" device (pre-renumeration) */ |
Alan Cox | 9e70f31 | 2008-07-22 11:13:42 +0100 | [diff] [blame] | 720 | static int keyspan_pda_fake_startup(struct usb_serial *serial) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 721 | { |
| 722 | int response; |
David Woodhouse | 3edbf98 | 2008-05-30 15:15:13 +0300 | [diff] [blame] | 723 | const char *fw_name; |
| 724 | const struct ihex_binrec *record; |
| 725 | const struct firmware *fw; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 726 | |
| 727 | /* download the firmware here ... */ |
| 728 | response = ezusb_set_reset(serial, 1); |
| 729 | |
David Woodhouse | 3edbf98 | 2008-05-30 15:15:13 +0300 | [diff] [blame] | 730 | if (0) { ; } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 731 | #ifdef KEYSPAN |
David Woodhouse | 3edbf98 | 2008-05-30 15:15:13 +0300 | [diff] [blame] | 732 | else if (le16_to_cpu(serial->dev->descriptor.idVendor) == KEYSPAN_VENDOR_ID) |
| 733 | fw_name = "keyspan_pda/keyspan_pda.fw"; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 734 | #endif |
| 735 | #ifdef XIRCOM |
David Woodhouse | 3edbf98 | 2008-05-30 15:15:13 +0300 | [diff] [blame] | 736 | else if ((le16_to_cpu(serial->dev->descriptor.idVendor) == XIRCOM_VENDOR_ID) || |
| 737 | (le16_to_cpu(serial->dev->descriptor.idVendor) == ENTREGRA_VENDOR_ID)) |
| 738 | fw_name = "keyspan_pda/xircom_pgs.fw"; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 739 | #endif |
David Woodhouse | 3edbf98 | 2008-05-30 15:15:13 +0300 | [diff] [blame] | 740 | else { |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 741 | err("%s: unknown vendor, aborting.", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 742 | return -ENODEV; |
| 743 | } |
David Woodhouse | 3edbf98 | 2008-05-30 15:15:13 +0300 | [diff] [blame] | 744 | if (request_ihex_firmware(&fw, fw_name, &serial->dev->dev)) { |
| 745 | err("failed to load firmware \"%s\"\n", fw_name); |
| 746 | return -ENOENT; |
| 747 | } |
| 748 | record = (const struct ihex_binrec *)fw->data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 749 | |
David Woodhouse | 3edbf98 | 2008-05-30 15:15:13 +0300 | [diff] [blame] | 750 | while (record) { |
| 751 | response = ezusb_writememory(serial, be32_to_cpu(record->addr), |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 752 | (unsigned char *)record->data, |
David Woodhouse | 3edbf98 | 2008-05-30 15:15:13 +0300 | [diff] [blame] | 753 | be16_to_cpu(record->len), 0xa0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 754 | if (response < 0) { |
| 755 | err("ezusb_writememory failed for Keyspan PDA " |
| 756 | "firmware (%d %04X %p %d)", |
David Woodhouse | 3edbf98 | 2008-05-30 15:15:13 +0300 | [diff] [blame] | 757 | response, be32_to_cpu(record->addr), |
| 758 | record->data, be16_to_cpu(record->len)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 759 | break; |
| 760 | } |
David Woodhouse | 3edbf98 | 2008-05-30 15:15:13 +0300 | [diff] [blame] | 761 | record = ihex_next_binrec(record); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 762 | } |
David Woodhouse | 3edbf98 | 2008-05-30 15:15:13 +0300 | [diff] [blame] | 763 | release_firmware(fw); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 764 | /* bring device out of reset. Renumeration will occur in a moment |
| 765 | and the new device will bind to the real driver */ |
| 766 | response = ezusb_set_reset(serial, 0); |
| 767 | |
| 768 | /* 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] | 769 | return 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 770 | } |
| 771 | |
Alan Cox | 9e70f31 | 2008-07-22 11:13:42 +0100 | [diff] [blame] | 772 | static int keyspan_pda_startup(struct usb_serial *serial) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 773 | { |
| 774 | |
| 775 | struct keyspan_pda_private *priv; |
| 776 | |
| 777 | /* allocate the private data structures for all ports. Well, for all |
| 778 | one ports. */ |
| 779 | |
| 780 | priv = kmalloc(sizeof(struct keyspan_pda_private), GFP_KERNEL); |
| 781 | if (!priv) |
Alan Cox | 9e70f31 | 2008-07-22 11:13:42 +0100 | [diff] [blame] | 782 | return 1; /* error */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 783 | usb_set_serial_port_data(serial->port[0], priv); |
| 784 | init_waitqueue_head(&serial->port[0]->write_wait); |
David Howells | c402895 | 2006-11-22 14:57:56 +0000 | [diff] [blame] | 785 | INIT_WORK(&priv->wakeup_work, keyspan_pda_wakeup_write); |
| 786 | INIT_WORK(&priv->unthrottle_work, keyspan_pda_request_unthrottle); |
| 787 | priv->serial = serial; |
| 788 | priv->port = serial->port[0]; |
Alan Cox | 9e70f31 | 2008-07-22 11:13:42 +0100 | [diff] [blame] | 789 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 790 | } |
| 791 | |
Alan Cox | 9e70f31 | 2008-07-22 11:13:42 +0100 | [diff] [blame] | 792 | static void keyspan_pda_shutdown(struct usb_serial *serial) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 793 | { |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 794 | dbg("%s", __func__); |
Alan Cox | 9e70f31 | 2008-07-22 11:13:42 +0100 | [diff] [blame] | 795 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 796 | kfree(usb_get_serial_port_data(serial->port[0])); |
| 797 | } |
| 798 | |
| 799 | #ifdef KEYSPAN |
Greg Kroah-Hartman | ea65370 | 2005-06-20 21:15:16 -0700 | [diff] [blame] | 800 | static struct usb_serial_driver keyspan_pda_fake_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_pre", |
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 - (prerenumeration)", |
Johannes Hölzl | d9b1b78 | 2006-12-17 21:50:24 +0100 | [diff] [blame] | 806 | .usb_driver = &keyspan_pda_driver, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 807 | .id_table = id_table_fake, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 808 | .num_ports = 1, |
| 809 | .attach = keyspan_pda_fake_startup, |
| 810 | }; |
| 811 | #endif |
| 812 | |
| 813 | #ifdef XIRCOM |
Greg Kroah-Hartman | ea65370 | 2005-06-20 21:15:16 -0700 | [diff] [blame] | 814 | static struct usb_serial_driver xircom_pgs_fake_device = { |
Greg Kroah-Hartman | 18fcac3 | 2005-06-20 21:15:16 -0700 | [diff] [blame] | 815 | .driver = { |
| 816 | .owner = THIS_MODULE, |
Greg Kroah-Hartman | 269bda1 | 2005-06-20 21:15:16 -0700 | [diff] [blame] | 817 | .name = "xircom_no_firm", |
Greg Kroah-Hartman | 18fcac3 | 2005-06-20 21:15:16 -0700 | [diff] [blame] | 818 | }, |
Greg Kroah-Hartman | 269bda1 | 2005-06-20 21:15:16 -0700 | [diff] [blame] | 819 | .description = "Xircom / Entregra PGS - (prerenumeration)", |
Johannes Hölzl | d9b1b78 | 2006-12-17 21:50:24 +0100 | [diff] [blame] | 820 | .usb_driver = &keyspan_pda_driver, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 821 | .id_table = id_table_fake_xircom, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 822 | .num_ports = 1, |
| 823 | .attach = keyspan_pda_fake_startup, |
| 824 | }; |
| 825 | #endif |
| 826 | |
Greg Kroah-Hartman | ea65370 | 2005-06-20 21:15:16 -0700 | [diff] [blame] | 827 | static struct usb_serial_driver keyspan_pda_device = { |
Greg Kroah-Hartman | 18fcac3 | 2005-06-20 21:15:16 -0700 | [diff] [blame] | 828 | .driver = { |
| 829 | .owner = THIS_MODULE, |
Greg Kroah-Hartman | 269bda1 | 2005-06-20 21:15:16 -0700 | [diff] [blame] | 830 | .name = "keyspan_pda", |
Greg Kroah-Hartman | 18fcac3 | 2005-06-20 21:15:16 -0700 | [diff] [blame] | 831 | }, |
Greg Kroah-Hartman | 269bda1 | 2005-06-20 21:15:16 -0700 | [diff] [blame] | 832 | .description = "Keyspan PDA", |
Johannes Hölzl | d9b1b78 | 2006-12-17 21:50:24 +0100 | [diff] [blame] | 833 | .usb_driver = &keyspan_pda_driver, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 834 | .id_table = id_table_std, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 835 | .num_ports = 1, |
| 836 | .open = keyspan_pda_open, |
| 837 | .close = keyspan_pda_close, |
| 838 | .write = keyspan_pda_write, |
| 839 | .write_room = keyspan_pda_write_room, |
| 840 | .write_bulk_callback = keyspan_pda_write_bulk_callback, |
| 841 | .read_int_callback = keyspan_pda_rx_interrupt, |
| 842 | .chars_in_buffer = keyspan_pda_chars_in_buffer, |
| 843 | .throttle = keyspan_pda_rx_throttle, |
| 844 | .unthrottle = keyspan_pda_rx_unthrottle, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 845 | .set_termios = keyspan_pda_set_termios, |
| 846 | .break_ctl = keyspan_pda_break_ctl, |
| 847 | .tiocmget = keyspan_pda_tiocmget, |
| 848 | .tiocmset = keyspan_pda_tiocmset, |
| 849 | .attach = keyspan_pda_startup, |
| 850 | .shutdown = keyspan_pda_shutdown, |
| 851 | }; |
| 852 | |
| 853 | |
Alan Cox | 9e70f31 | 2008-07-22 11:13:42 +0100 | [diff] [blame] | 854 | static int __init keyspan_pda_init(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 855 | { |
| 856 | int retval; |
| 857 | retval = usb_serial_register(&keyspan_pda_device); |
| 858 | if (retval) |
| 859 | goto failed_pda_register; |
| 860 | #ifdef KEYSPAN |
| 861 | retval = usb_serial_register(&keyspan_pda_fake_device); |
| 862 | if (retval) |
| 863 | goto failed_pda_fake_register; |
| 864 | #endif |
| 865 | #ifdef XIRCOM |
| 866 | retval = usb_serial_register(&xircom_pgs_fake_device); |
| 867 | if (retval) |
| 868 | goto failed_xircom_register; |
| 869 | #endif |
| 870 | retval = usb_register(&keyspan_pda_driver); |
| 871 | if (retval) |
| 872 | goto failed_usb_register; |
| 873 | info(DRIVER_DESC " " DRIVER_VERSION); |
| 874 | return 0; |
Alan Cox | 9e70f31 | 2008-07-22 11:13:42 +0100 | [diff] [blame] | 875 | failed_usb_register: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 876 | #ifdef XIRCOM |
| 877 | usb_serial_deregister(&xircom_pgs_fake_device); |
| 878 | failed_xircom_register: |
| 879 | #endif /* XIRCOM */ |
| 880 | #ifdef KEYSPAN |
| 881 | usb_serial_deregister(&keyspan_pda_fake_device); |
| 882 | #endif |
| 883 | #ifdef KEYSPAN |
| 884 | failed_pda_fake_register: |
| 885 | #endif |
| 886 | usb_serial_deregister(&keyspan_pda_device); |
| 887 | failed_pda_register: |
| 888 | return retval; |
| 889 | } |
| 890 | |
| 891 | |
Alan Cox | 9e70f31 | 2008-07-22 11:13:42 +0100 | [diff] [blame] | 892 | static void __exit keyspan_pda_exit(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 893 | { |
Alan Cox | 9e70f31 | 2008-07-22 11:13:42 +0100 | [diff] [blame] | 894 | usb_deregister(&keyspan_pda_driver); |
| 895 | usb_serial_deregister(&keyspan_pda_device); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 896 | #ifdef KEYSPAN |
Alan Cox | 9e70f31 | 2008-07-22 11:13:42 +0100 | [diff] [blame] | 897 | usb_serial_deregister(&keyspan_pda_fake_device); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 898 | #endif |
| 899 | #ifdef XIRCOM |
Alan Cox | 9e70f31 | 2008-07-22 11:13:42 +0100 | [diff] [blame] | 900 | usb_serial_deregister(&xircom_pgs_fake_device); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 901 | #endif |
| 902 | } |
| 903 | |
| 904 | |
| 905 | module_init(keyspan_pda_init); |
| 906 | module_exit(keyspan_pda_exit); |
| 907 | |
Alan Cox | 9e70f31 | 2008-07-22 11:13:42 +0100 | [diff] [blame] | 908 | MODULE_AUTHOR(DRIVER_AUTHOR); |
| 909 | MODULE_DESCRIPTION(DRIVER_DESC); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 910 | MODULE_LICENSE("GPL"); |
| 911 | |
| 912 | module_param(debug, bool, S_IRUGO | S_IWUSR); |
| 913 | MODULE_PARM_DESC(debug, "Debug enabled or not"); |
| 914 | |