Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Prolific PL2303 USB to serial adaptor driver |
| 3 | * |
Greg Kroah-Hartman | 4d0dce3 | 2007-06-12 11:43:37 -0700 | [diff] [blame] | 4 | * Copyright (C) 2001-2007 Greg Kroah-Hartman (greg@kroah.com) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5 | * Copyright (C) 2003 IBM Corp. |
| 6 | * |
| 7 | * Original driver for 2.2.x by anonymous |
| 8 | * |
Greg Kroah-Hartman | 4d0dce3 | 2007-06-12 11:43:37 -0700 | [diff] [blame] | 9 | * This program is free software; you can redistribute it and/or |
| 10 | * modify it under the terms of the GNU General Public License version |
| 11 | * 2 as published by the Free Software Foundation. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 12 | * |
Alan Cox | 3a0f43e | 2008-07-22 11:14:49 +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 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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/serial.h> |
| 26 | #include <linux/module.h> |
| 27 | #include <linux/moduleparam.h> |
| 28 | #include <linux/spinlock.h> |
Alan Cox | 3a0f43e | 2008-07-22 11:14:49 +0100 | [diff] [blame] | 29 | #include <linux/uaccess.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 30 | #include <linux/usb.h> |
Greg Kroah-Hartman | a969888 | 2006-07-11 21:22:58 -0700 | [diff] [blame] | 31 | #include <linux/usb/serial.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 32 | #include "pl2303.h" |
| 33 | |
| 34 | /* |
| 35 | * Version Information |
| 36 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 37 | #define DRIVER_DESC "Prolific PL2303 USB to serial adaptor driver" |
| 38 | |
| 39 | static int debug; |
| 40 | |
| 41 | #define PL2303_CLOSING_WAIT (30*HZ) |
| 42 | |
| 43 | #define PL2303_BUF_SIZE 1024 |
| 44 | #define PL2303_TMP_BUF_SIZE 1024 |
| 45 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 46 | struct pl2303_buf { |
| 47 | unsigned int buf_size; |
| 48 | char *buf_buf; |
| 49 | char *buf_get; |
| 50 | char *buf_put; |
| 51 | }; |
| 52 | |
| 53 | static struct usb_device_id id_table [] = { |
| 54 | { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID) }, |
| 55 | { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_RSAQ2) }, |
Peter Moulder | 3d86149 | 2006-06-19 22:47:49 +1000 | [diff] [blame] | 56 | { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_DCU11) }, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 57 | { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_RSAQ3) }, |
| 58 | { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_PHAROS) }, |
Max Arnold | b483b6a | 2008-03-20 16:43:56 +0700 | [diff] [blame] | 59 | { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_ALDIGA) }, |
Steve Murphy | 4be2fa1 | 2008-05-23 23:39:05 +0530 | [diff] [blame] | 60 | { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_MMX) }, |
Greg Kroah-Hartman | 727df35 | 2008-07-02 15:25:41 -0500 | [diff] [blame] | 61 | { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_GPRS) }, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 62 | { USB_DEVICE(IODATA_VENDOR_ID, IODATA_PRODUCT_ID) }, |
Masakazu Mokuno | 8a28dea | 2007-10-23 13:51:57 +0900 | [diff] [blame] | 63 | { USB_DEVICE(IODATA_VENDOR_ID, IODATA_PRODUCT_ID_RSAQ5) }, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 64 | { USB_DEVICE(ATEN_VENDOR_ID, ATEN_PRODUCT_ID) }, |
| 65 | { USB_DEVICE(ATEN_VENDOR_ID2, ATEN_PRODUCT_ID) }, |
| 66 | { USB_DEVICE(ELCOM_VENDOR_ID, ELCOM_PRODUCT_ID) }, |
| 67 | { USB_DEVICE(ELCOM_VENDOR_ID, ELCOM_PRODUCT_ID_UCSGT) }, |
| 68 | { USB_DEVICE(ITEGNO_VENDOR_ID, ITEGNO_PRODUCT_ID) }, |
Wang Jun | 5838171 | 2006-04-19 16:32:07 +0800 | [diff] [blame] | 69 | { USB_DEVICE(ITEGNO_VENDOR_ID, ITEGNO_PRODUCT_ID_2080) }, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 70 | { USB_DEVICE(MA620_VENDOR_ID, MA620_PRODUCT_ID) }, |
| 71 | { USB_DEVICE(RATOC_VENDOR_ID, RATOC_PRODUCT_ID) }, |
| 72 | { USB_DEVICE(TRIPP_VENDOR_ID, TRIPP_PRODUCT_ID) }, |
| 73 | { USB_DEVICE(RADIOSHACK_VENDOR_ID, RADIOSHACK_PRODUCT_ID) }, |
| 74 | { USB_DEVICE(DCU10_VENDOR_ID, DCU10_PRODUCT_ID) }, |
| 75 | { USB_DEVICE(SITECOM_VENDOR_ID, SITECOM_PRODUCT_ID) }, |
| 76 | { USB_DEVICE(ALCATEL_VENDOR_ID, ALCATEL_PRODUCT_ID) }, |
| 77 | { USB_DEVICE(SAMSUNG_VENDOR_ID, SAMSUNG_PRODUCT_ID) }, |
Luiz Fernando Capitulino | a8310f3 | 2005-11-17 09:47:32 -0800 | [diff] [blame] | 78 | { USB_DEVICE(SIEMENS_VENDOR_ID, SIEMENS_PRODUCT_ID_SX1) }, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 79 | { USB_DEVICE(SIEMENS_VENDOR_ID, SIEMENS_PRODUCT_ID_X65) }, |
Luiz Fernando Capitulino | a8310f3 | 2005-11-17 09:47:32 -0800 | [diff] [blame] | 80 | { USB_DEVICE(SIEMENS_VENDOR_ID, SIEMENS_PRODUCT_ID_X75) }, |
Andreas Loibl | e7beb66 | 2007-08-24 01:51:11 +0200 | [diff] [blame] | 81 | { USB_DEVICE(SIEMENS_VENDOR_ID, SIEMENS_PRODUCT_ID_EF81) }, |
Alan Cox | 912299f | 2009-04-06 17:35:12 +0100 | [diff] [blame] | 82 | { USB_DEVICE(BENQ_VENDOR_ID, BENQ_PRODUCT_ID_S81) }, /* Benq/Siemens S81 */ |
Peter Favrholdt | acbb36f | 2005-04-18 17:39:32 -0700 | [diff] [blame] | 83 | { USB_DEVICE(SYNTECH_VENDOR_ID, SYNTECH_PRODUCT_ID) }, |
Christian Lindner | c6c2772 | 2006-02-01 14:10:52 +0100 | [diff] [blame] | 84 | { USB_DEVICE(NOKIA_CA42_VENDOR_ID, NOKIA_CA42_PRODUCT_ID) }, |
| 85 | { USB_DEVICE(CA_42_CA42_VENDOR_ID, CA_42_CA42_PRODUCT_ID) }, |
Denis MONTERRAT | 6cceb05 | 2006-01-19 14:52:38 +0100 | [diff] [blame] | 86 | { USB_DEVICE(SAGEM_VENDOR_ID, SAGEM_PRODUCT_ID) }, |
Christian Lindner | c6c2772 | 2006-02-01 14:10:52 +0100 | [diff] [blame] | 87 | { USB_DEVICE(LEADTEK_VENDOR_ID, LEADTEK_9531_PRODUCT_ID) }, |
Dick Streefland | 491b04c | 2006-03-01 00:53:33 -0800 | [diff] [blame] | 88 | { USB_DEVICE(SPEEDDRAGON_VENDOR_ID, SPEEDDRAGON_PRODUCT_ID) }, |
Matthew Meno | 3b92847 | 2006-06-21 15:25:53 -0400 | [diff] [blame] | 89 | { USB_DEVICE(DATAPILOT_U2_VENDOR_ID, DATAPILOT_U2_PRODUCT_ID) }, |
Kim Oldfield | b7aa94b | 2006-07-25 15:54:59 +1000 | [diff] [blame] | 90 | { USB_DEVICE(BELKIN_VENDOR_ID, BELKIN_PRODUCT_ID) }, |
Johannes Steingraeber | 8fd8013 | 2006-09-16 16:17:34 +0200 | [diff] [blame] | 91 | { USB_DEVICE(ALCOR_VENDOR_ID, ALCOR_PRODUCT_ID) }, |
YOSHIFUJI Hideaki | 2d94b98 | 2007-01-26 22:51:38 +0900 | [diff] [blame] | 92 | { USB_DEVICE(WS002IN_VENDOR_ID, WS002IN_PRODUCT_ID) }, |
Magnus Damm | 9e3285d | 2007-11-08 16:45:46 +0900 | [diff] [blame] | 93 | { USB_DEVICE(COREGA_VENDOR_ID, COREGA_PRODUCT_ID) }, |
Damien Stuart | cc311ee | 2008-01-06 13:51:39 -0500 | [diff] [blame] | 94 | { USB_DEVICE(YCCABLE_VENDOR_ID, YCCABLE_PRODUCT_ID) }, |
Matthew Arnold | 7c99200 | 2008-12-13 22:42:53 +1100 | [diff] [blame] | 95 | { USB_DEVICE(SUPERIAL_VENDOR_ID, SUPERIAL_PRODUCT_ID) }, |
Mike Provencher | af4b851 | 2008-12-16 14:30:14 -0600 | [diff] [blame] | 96 | { USB_DEVICE(HP_VENDOR_ID, HP_LD220_PRODUCT_ID) }, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 97 | { } /* Terminating entry */ |
| 98 | }; |
| 99 | |
Thiago Galesi | 372db8a | 2006-07-31 15:39:27 -0300 | [diff] [blame] | 100 | MODULE_DEVICE_TABLE(usb, id_table); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 101 | |
| 102 | static struct usb_driver pl2303_driver = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 103 | .name = "pl2303", |
| 104 | .probe = usb_serial_probe, |
| 105 | .disconnect = usb_serial_disconnect, |
| 106 | .id_table = id_table, |
Sarah Sharp | fcf9e55 | 2007-12-14 14:09:30 -0800 | [diff] [blame] | 107 | .suspend = usb_serial_suspend, |
| 108 | .resume = usb_serial_resume, |
Greg Kroah-Hartman | ba9dc65 | 2005-11-16 13:41:28 -0800 | [diff] [blame] | 109 | .no_dynamic_id = 1, |
Sarah Sharp | fcf9e55 | 2007-12-14 14:09:30 -0800 | [diff] [blame] | 110 | .supports_autosuspend = 1, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 111 | }; |
| 112 | |
| 113 | #define SET_LINE_REQUEST_TYPE 0x21 |
| 114 | #define SET_LINE_REQUEST 0x20 |
| 115 | |
| 116 | #define SET_CONTROL_REQUEST_TYPE 0x21 |
| 117 | #define SET_CONTROL_REQUEST 0x22 |
| 118 | #define CONTROL_DTR 0x01 |
| 119 | #define CONTROL_RTS 0x02 |
| 120 | |
| 121 | #define BREAK_REQUEST_TYPE 0x21 |
Alan Cox | 3a0f43e | 2008-07-22 11:14:49 +0100 | [diff] [blame] | 122 | #define BREAK_REQUEST 0x23 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 123 | #define BREAK_ON 0xffff |
| 124 | #define BREAK_OFF 0x0000 |
| 125 | |
| 126 | #define GET_LINE_REQUEST_TYPE 0xa1 |
| 127 | #define GET_LINE_REQUEST 0x21 |
| 128 | |
| 129 | #define VENDOR_WRITE_REQUEST_TYPE 0x40 |
| 130 | #define VENDOR_WRITE_REQUEST 0x01 |
| 131 | |
| 132 | #define VENDOR_READ_REQUEST_TYPE 0xc0 |
| 133 | #define VENDOR_READ_REQUEST 0x01 |
| 134 | |
| 135 | #define UART_STATE 0x08 |
| 136 | #define UART_STATE_TRANSIENT_MASK 0x74 |
| 137 | #define UART_DCD 0x01 |
| 138 | #define UART_DSR 0x02 |
| 139 | #define UART_BREAK_ERROR 0x04 |
| 140 | #define UART_RING 0x08 |
| 141 | #define UART_FRAME_ERROR 0x10 |
| 142 | #define UART_PARITY_ERROR 0x20 |
| 143 | #define UART_OVERRUN_ERROR 0x40 |
| 144 | #define UART_CTS 0x80 |
| 145 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 146 | |
| 147 | enum pl2303_type { |
| 148 | type_0, /* don't know the difference between type 0 and */ |
| 149 | type_1, /* type 1, until someone from prolific tells us... */ |
| 150 | HX, /* HX version of the pl2303 chip */ |
| 151 | }; |
| 152 | |
| 153 | struct pl2303_private { |
| 154 | spinlock_t lock; |
| 155 | struct pl2303_buf *buf; |
| 156 | int write_urb_in_use; |
| 157 | wait_queue_head_t delta_msr_wait; |
| 158 | u8 line_control; |
| 159 | u8 line_status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 160 | enum pl2303_type type; |
| 161 | }; |
| 162 | |
Thiago Galesi | 572d313 | 2006-07-29 10:46:37 -0300 | [diff] [blame] | 163 | /* |
| 164 | * pl2303_buf_alloc |
| 165 | * |
| 166 | * Allocate a circular buffer and all associated memory. |
| 167 | */ |
| 168 | static struct pl2303_buf *pl2303_buf_alloc(unsigned int size) |
| 169 | { |
| 170 | struct pl2303_buf *pb; |
| 171 | |
| 172 | if (size == 0) |
| 173 | return NULL; |
| 174 | |
Robert P. J. Day | 5cbded5 | 2006-12-13 00:35:56 -0800 | [diff] [blame] | 175 | pb = kmalloc(sizeof(struct pl2303_buf), GFP_KERNEL); |
Thiago Galesi | 572d313 | 2006-07-29 10:46:37 -0300 | [diff] [blame] | 176 | if (pb == NULL) |
| 177 | return NULL; |
| 178 | |
| 179 | pb->buf_buf = kmalloc(size, GFP_KERNEL); |
| 180 | if (pb->buf_buf == NULL) { |
| 181 | kfree(pb); |
| 182 | return NULL; |
| 183 | } |
| 184 | |
| 185 | pb->buf_size = size; |
| 186 | pb->buf_get = pb->buf_put = pb->buf_buf; |
| 187 | |
| 188 | return pb; |
| 189 | } |
| 190 | |
| 191 | /* |
| 192 | * pl2303_buf_free |
| 193 | * |
| 194 | * Free the buffer and all associated memory. |
| 195 | */ |
| 196 | static void pl2303_buf_free(struct pl2303_buf *pb) |
| 197 | { |
| 198 | if (pb) { |
| 199 | kfree(pb->buf_buf); |
| 200 | kfree(pb); |
| 201 | } |
| 202 | } |
| 203 | |
| 204 | /* |
| 205 | * pl2303_buf_clear |
| 206 | * |
| 207 | * Clear out all data in the circular buffer. |
| 208 | */ |
| 209 | static void pl2303_buf_clear(struct pl2303_buf *pb) |
| 210 | { |
| 211 | if (pb != NULL) |
| 212 | pb->buf_get = pb->buf_put; |
| 213 | /* equivalent to a get of all data available */ |
| 214 | } |
| 215 | |
| 216 | /* |
| 217 | * pl2303_buf_data_avail |
| 218 | * |
| 219 | * Return the number of bytes of data available in the circular |
| 220 | * buffer. |
| 221 | */ |
| 222 | static unsigned int pl2303_buf_data_avail(struct pl2303_buf *pb) |
| 223 | { |
| 224 | if (pb == NULL) |
| 225 | return 0; |
| 226 | |
Alan Cox | 3a0f43e | 2008-07-22 11:14:49 +0100 | [diff] [blame] | 227 | return (pb->buf_size + pb->buf_put - pb->buf_get) % pb->buf_size; |
Thiago Galesi | 572d313 | 2006-07-29 10:46:37 -0300 | [diff] [blame] | 228 | } |
| 229 | |
| 230 | /* |
| 231 | * pl2303_buf_space_avail |
| 232 | * |
| 233 | * Return the number of bytes of space available in the circular |
| 234 | * buffer. |
| 235 | */ |
| 236 | static unsigned int pl2303_buf_space_avail(struct pl2303_buf *pb) |
| 237 | { |
| 238 | if (pb == NULL) |
| 239 | return 0; |
| 240 | |
Alan Cox | 3a0f43e | 2008-07-22 11:14:49 +0100 | [diff] [blame] | 241 | return (pb->buf_size + pb->buf_get - pb->buf_put - 1) % pb->buf_size; |
Thiago Galesi | 572d313 | 2006-07-29 10:46:37 -0300 | [diff] [blame] | 242 | } |
| 243 | |
| 244 | /* |
| 245 | * pl2303_buf_put |
| 246 | * |
| 247 | * Copy data data from a user buffer and put it into the circular buffer. |
| 248 | * Restrict to the amount of space available. |
| 249 | * |
| 250 | * Return the number of bytes copied. |
| 251 | */ |
| 252 | static unsigned int pl2303_buf_put(struct pl2303_buf *pb, const char *buf, |
| 253 | unsigned int count) |
| 254 | { |
| 255 | unsigned int len; |
| 256 | |
| 257 | if (pb == NULL) |
| 258 | return 0; |
| 259 | |
| 260 | len = pl2303_buf_space_avail(pb); |
| 261 | if (count > len) |
| 262 | count = len; |
| 263 | |
| 264 | if (count == 0) |
| 265 | return 0; |
| 266 | |
| 267 | len = pb->buf_buf + pb->buf_size - pb->buf_put; |
| 268 | if (count > len) { |
| 269 | memcpy(pb->buf_put, buf, len); |
| 270 | memcpy(pb->buf_buf, buf+len, count - len); |
| 271 | pb->buf_put = pb->buf_buf + count - len; |
| 272 | } else { |
| 273 | memcpy(pb->buf_put, buf, count); |
| 274 | if (count < len) |
| 275 | pb->buf_put += count; |
| 276 | else /* count == len */ |
| 277 | pb->buf_put = pb->buf_buf; |
| 278 | } |
| 279 | |
| 280 | return count; |
| 281 | } |
| 282 | |
| 283 | /* |
| 284 | * pl2303_buf_get |
| 285 | * |
| 286 | * Get data from the circular buffer and copy to the given buffer. |
| 287 | * Restrict to the amount of data available. |
| 288 | * |
| 289 | * Return the number of bytes copied. |
| 290 | */ |
| 291 | static unsigned int pl2303_buf_get(struct pl2303_buf *pb, char *buf, |
| 292 | unsigned int count) |
| 293 | { |
| 294 | unsigned int len; |
| 295 | |
| 296 | if (pb == NULL) |
| 297 | return 0; |
| 298 | |
| 299 | len = pl2303_buf_data_avail(pb); |
| 300 | if (count > len) |
| 301 | count = len; |
| 302 | |
| 303 | if (count == 0) |
| 304 | return 0; |
| 305 | |
| 306 | len = pb->buf_buf + pb->buf_size - pb->buf_get; |
| 307 | if (count > len) { |
| 308 | memcpy(buf, pb->buf_get, len); |
| 309 | memcpy(buf+len, pb->buf_buf, count - len); |
| 310 | pb->buf_get = pb->buf_buf + count - len; |
| 311 | } else { |
| 312 | memcpy(buf, pb->buf_get, count); |
| 313 | if (count < len) |
| 314 | pb->buf_get += count; |
| 315 | else /* count == len */ |
| 316 | pb->buf_get = pb->buf_buf; |
| 317 | } |
| 318 | |
| 319 | return count; |
| 320 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 321 | |
Sarah Sharp | eb44da0 | 2007-12-14 14:08:00 -0800 | [diff] [blame] | 322 | static int pl2303_vendor_read(__u16 value, __u16 index, |
| 323 | struct usb_serial *serial, unsigned char *buf) |
| 324 | { |
| 325 | int res = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), |
| 326 | VENDOR_READ_REQUEST, VENDOR_READ_REQUEST_TYPE, |
| 327 | value, index, buf, 1, 100); |
| 328 | dbg("0x%x:0x%x:0x%x:0x%x %d - %x", VENDOR_READ_REQUEST_TYPE, |
| 329 | VENDOR_READ_REQUEST, value, index, res, buf[0]); |
| 330 | return res; |
| 331 | } |
| 332 | |
| 333 | static int pl2303_vendor_write(__u16 value, __u16 index, |
| 334 | struct usb_serial *serial) |
| 335 | { |
| 336 | int res = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), |
| 337 | VENDOR_WRITE_REQUEST, VENDOR_WRITE_REQUEST_TYPE, |
| 338 | value, index, NULL, 0, 100); |
| 339 | dbg("0x%x:0x%x:0x%x:0x%x %d", VENDOR_WRITE_REQUEST_TYPE, |
| 340 | VENDOR_WRITE_REQUEST, value, index, res); |
| 341 | return res; |
| 342 | } |
| 343 | |
Thiago Galesi | 372db8a | 2006-07-31 15:39:27 -0300 | [diff] [blame] | 344 | static int pl2303_startup(struct usb_serial *serial) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 345 | { |
| 346 | struct pl2303_private *priv; |
| 347 | enum pl2303_type type = type_0; |
Sarah Sharp | 3e15250 | 2007-12-14 14:08:35 -0800 | [diff] [blame] | 348 | unsigned char *buf; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 349 | int i; |
| 350 | |
Sarah Sharp | 3e15250 | 2007-12-14 14:08:35 -0800 | [diff] [blame] | 351 | buf = kmalloc(10, GFP_KERNEL); |
| 352 | if (buf == NULL) |
| 353 | return -ENOMEM; |
| 354 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 355 | if (serial->dev->descriptor.bDeviceClass == 0x02) |
| 356 | type = type_0; |
| 357 | else if (serial->dev->descriptor.bMaxPacketSize0 == 0x40) |
| 358 | type = HX; |
| 359 | else if (serial->dev->descriptor.bDeviceClass == 0x00) |
| 360 | type = type_1; |
| 361 | else if (serial->dev->descriptor.bDeviceClass == 0xFF) |
| 362 | type = type_1; |
| 363 | dbg("device type: %d", type); |
| 364 | |
| 365 | for (i = 0; i < serial->num_ports; ++i) { |
Eric Sesterhenn | 80b6ca4 | 2006-02-27 21:29:43 +0100 | [diff] [blame] | 366 | priv = kzalloc(sizeof(struct pl2303_private), GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 367 | if (!priv) |
| 368 | goto cleanup; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 369 | spin_lock_init(&priv->lock); |
| 370 | priv->buf = pl2303_buf_alloc(PL2303_BUF_SIZE); |
| 371 | if (priv->buf == NULL) { |
| 372 | kfree(priv); |
| 373 | goto cleanup; |
| 374 | } |
| 375 | init_waitqueue_head(&priv->delta_msr_wait); |
| 376 | priv->type = type; |
| 377 | usb_set_serial_port_data(serial->port[i], priv); |
| 378 | } |
Sarah Sharp | 3e15250 | 2007-12-14 14:08:35 -0800 | [diff] [blame] | 379 | |
| 380 | pl2303_vendor_read(0x8484, 0, serial, buf); |
| 381 | pl2303_vendor_write(0x0404, 0, serial); |
| 382 | pl2303_vendor_read(0x8484, 0, serial, buf); |
| 383 | pl2303_vendor_read(0x8383, 0, serial, buf); |
| 384 | pl2303_vendor_read(0x8484, 0, serial, buf); |
| 385 | pl2303_vendor_write(0x0404, 1, serial); |
| 386 | pl2303_vendor_read(0x8484, 0, serial, buf); |
| 387 | pl2303_vendor_read(0x8383, 0, serial, buf); |
| 388 | pl2303_vendor_write(0, 1, serial); |
| 389 | pl2303_vendor_write(1, 0, serial); |
| 390 | if (type == HX) |
| 391 | pl2303_vendor_write(2, 0x44, serial); |
| 392 | else |
| 393 | pl2303_vendor_write(2, 0x24, serial); |
| 394 | |
| 395 | kfree(buf); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 396 | return 0; |
| 397 | |
| 398 | cleanup: |
Sarah Sharp | 3e15250 | 2007-12-14 14:08:35 -0800 | [diff] [blame] | 399 | kfree(buf); |
Alan Cox | 3a0f43e | 2008-07-22 11:14:49 +0100 | [diff] [blame] | 400 | for (--i; i >= 0; --i) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 401 | priv = usb_get_serial_port_data(serial->port[i]); |
| 402 | pl2303_buf_free(priv->buf); |
| 403 | kfree(priv); |
| 404 | usb_set_serial_port_data(serial->port[i], NULL); |
| 405 | } |
| 406 | return -ENOMEM; |
| 407 | } |
| 408 | |
Thiago Galesi | 372db8a | 2006-07-31 15:39:27 -0300 | [diff] [blame] | 409 | static int set_control_lines(struct usb_device *dev, u8 value) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 410 | { |
| 411 | int retval; |
Alan Cox | 3a0f43e | 2008-07-22 11:14:49 +0100 | [diff] [blame] | 412 | |
Thiago Galesi | 372db8a | 2006-07-31 15:39:27 -0300 | [diff] [blame] | 413 | retval = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), |
| 414 | SET_CONTROL_REQUEST, SET_CONTROL_REQUEST_TYPE, |
| 415 | value, 0, NULL, 0, 100); |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 416 | dbg("%s - value = %d, retval = %d", __func__, value, retval); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 417 | return retval; |
| 418 | } |
| 419 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 420 | static void pl2303_send(struct usb_serial_port *port) |
| 421 | { |
| 422 | int count, result; |
| 423 | struct pl2303_private *priv = usb_get_serial_port_data(port); |
| 424 | unsigned long flags; |
| 425 | |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 426 | dbg("%s - port %d", __func__, port->number); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 427 | |
| 428 | spin_lock_irqsave(&priv->lock, flags); |
| 429 | |
| 430 | if (priv->write_urb_in_use) { |
| 431 | spin_unlock_irqrestore(&priv->lock, flags); |
| 432 | return; |
| 433 | } |
| 434 | |
| 435 | count = pl2303_buf_get(priv->buf, port->write_urb->transfer_buffer, |
Thiago Galesi | 372db8a | 2006-07-31 15:39:27 -0300 | [diff] [blame] | 436 | port->bulk_out_size); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 437 | |
| 438 | if (count == 0) { |
| 439 | spin_unlock_irqrestore(&priv->lock, flags); |
| 440 | return; |
| 441 | } |
| 442 | |
| 443 | priv->write_urb_in_use = 1; |
| 444 | |
| 445 | spin_unlock_irqrestore(&priv->lock, flags); |
| 446 | |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 447 | usb_serial_debug_data(debug, &port->dev, __func__, count, |
Thiago Galesi | 372db8a | 2006-07-31 15:39:27 -0300 | [diff] [blame] | 448 | port->write_urb->transfer_buffer); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 449 | |
| 450 | port->write_urb->transfer_buffer_length = count; |
| 451 | port->write_urb->dev = port->serial->dev; |
Thiago Galesi | 372db8a | 2006-07-31 15:39:27 -0300 | [diff] [blame] | 452 | result = usb_submit_urb(port->write_urb, GFP_ATOMIC); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 453 | if (result) { |
Thiago Galesi | 372db8a | 2006-07-31 15:39:27 -0300 | [diff] [blame] | 454 | dev_err(&port->dev, "%s - failed submitting write urb," |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 455 | " error %d\n", __func__, result); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 456 | priv->write_urb_in_use = 0; |
Alan Cox | 3a0f43e | 2008-07-22 11:14:49 +0100 | [diff] [blame] | 457 | /* TODO: reschedule pl2303_send */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 458 | } |
| 459 | |
Pete Zaitcev | cf2c748 | 2006-05-22 21:58:49 -0700 | [diff] [blame] | 460 | usb_serial_port_softint(port); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 461 | } |
| 462 | |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 463 | static int pl2303_write(struct tty_struct *tty, struct usb_serial_port *port, |
| 464 | const unsigned char *buf, int count) |
Thiago Galesi | 572d313 | 2006-07-29 10:46:37 -0300 | [diff] [blame] | 465 | { |
| 466 | struct pl2303_private *priv = usb_get_serial_port_data(port); |
| 467 | unsigned long flags; |
| 468 | |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 469 | dbg("%s - port %d, %d bytes", __func__, port->number, count); |
Thiago Galesi | 572d313 | 2006-07-29 10:46:37 -0300 | [diff] [blame] | 470 | |
| 471 | if (!count) |
| 472 | return count; |
| 473 | |
| 474 | spin_lock_irqsave(&priv->lock, flags); |
| 475 | count = pl2303_buf_put(priv->buf, buf, count); |
| 476 | spin_unlock_irqrestore(&priv->lock, flags); |
| 477 | |
| 478 | pl2303_send(port); |
| 479 | |
| 480 | return count; |
| 481 | } |
| 482 | |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 483 | static int pl2303_write_room(struct tty_struct *tty) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 484 | { |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 485 | struct usb_serial_port *port = tty->driver_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 486 | struct pl2303_private *priv = usb_get_serial_port_data(port); |
| 487 | int room = 0; |
| 488 | unsigned long flags; |
| 489 | |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 490 | dbg("%s - port %d", __func__, port->number); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 491 | |
| 492 | spin_lock_irqsave(&priv->lock, flags); |
| 493 | room = pl2303_buf_space_avail(priv->buf); |
| 494 | spin_unlock_irqrestore(&priv->lock, flags); |
| 495 | |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 496 | dbg("%s - returns %d", __func__, room); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 497 | return room; |
| 498 | } |
| 499 | |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 500 | static int pl2303_chars_in_buffer(struct tty_struct *tty) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 501 | { |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 502 | struct usb_serial_port *port = tty->driver_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 503 | struct pl2303_private *priv = usb_get_serial_port_data(port); |
| 504 | int chars = 0; |
| 505 | unsigned long flags; |
| 506 | |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 507 | dbg("%s - port %d", __func__, port->number); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 508 | |
| 509 | spin_lock_irqsave(&priv->lock, flags); |
| 510 | chars = pl2303_buf_data_avail(priv->buf); |
| 511 | spin_unlock_irqrestore(&priv->lock, flags); |
| 512 | |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 513 | dbg("%s - returns %d", __func__, chars); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 514 | return chars; |
| 515 | } |
| 516 | |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 517 | static void pl2303_set_termios(struct tty_struct *tty, |
| 518 | struct usb_serial_port *port, struct ktermios *old_termios) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 519 | { |
| 520 | struct usb_serial *serial = port->serial; |
| 521 | struct pl2303_private *priv = usb_get_serial_port_data(port); |
| 522 | unsigned long flags; |
| 523 | unsigned int cflag; |
| 524 | unsigned char *buf; |
| 525 | int baud; |
| 526 | int i; |
| 527 | u8 control; |
| 528 | |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 529 | dbg("%s - port %d", __func__, port->number); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 530 | |
Alan Cox | bf5e583 | 2008-01-08 14:55:51 +0000 | [diff] [blame] | 531 | /* The PL2303 is reported to lose bytes if you change |
| 532 | serial settings even to the same values as before. Thus |
| 533 | we actually need to filter in this specific case */ |
| 534 | |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 535 | if (!tty_termios_hw_change(tty->termios, old_termios)) |
Alan Cox | bf5e583 | 2008-01-08 14:55:51 +0000 | [diff] [blame] | 536 | return; |
| 537 | |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 538 | cflag = tty->termios->c_cflag; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 539 | |
Thiago Galesi | 372db8a | 2006-07-31 15:39:27 -0300 | [diff] [blame] | 540 | buf = kzalloc(7, GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 541 | if (!buf) { |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 542 | dev_err(&port->dev, "%s - out of memory.\n", __func__); |
Alan Cox | a5b6f60 | 2008-04-08 17:16:06 +0100 | [diff] [blame] | 543 | /* Report back no change occurred */ |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 544 | *tty->termios = *old_termios; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 545 | return; |
| 546 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 547 | |
Thiago Galesi | 372db8a | 2006-07-31 15:39:27 -0300 | [diff] [blame] | 548 | i = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), |
| 549 | GET_LINE_REQUEST, GET_LINE_REQUEST_TYPE, |
| 550 | 0, 0, buf, 7, 100); |
| 551 | dbg("0xa1:0x21:0:0 %d - %x %x %x %x %x %x %x", i, |
| 552 | buf[0], buf[1], buf[2], buf[3], buf[4], buf[5], buf[6]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 553 | |
| 554 | if (cflag & CSIZE) { |
| 555 | switch (cflag & CSIZE) { |
Alan Cox | 3a0f43e | 2008-07-22 11:14:49 +0100 | [diff] [blame] | 556 | case CS5: |
| 557 | buf[6] = 5; |
| 558 | break; |
| 559 | case CS6: |
| 560 | buf[6] = 6; |
| 561 | break; |
| 562 | case CS7: |
| 563 | buf[6] = 7; |
| 564 | break; |
| 565 | default: |
| 566 | case CS8: |
| 567 | buf[6] = 8; |
| 568 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 569 | } |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 570 | dbg("%s - data bits = %d", __func__, buf[6]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 571 | } |
| 572 | |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 573 | baud = tty_get_baud_rate(tty); |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 574 | dbg("%s - baud = %d", __func__, baud); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 575 | if (baud) { |
| 576 | buf[0] = baud & 0xff; |
| 577 | buf[1] = (baud >> 8) & 0xff; |
| 578 | buf[2] = (baud >> 16) & 0xff; |
| 579 | buf[3] = (baud >> 24) & 0xff; |
| 580 | } |
| 581 | |
| 582 | /* For reference buf[4]=0 is 1 stop bits */ |
| 583 | /* For reference buf[4]=1 is 1.5 stop bits */ |
| 584 | /* For reference buf[4]=2 is 2 stop bits */ |
| 585 | if (cflag & CSTOPB) { |
| 586 | buf[4] = 2; |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 587 | dbg("%s - stop bits = 2", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 588 | } else { |
| 589 | buf[4] = 0; |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 590 | dbg("%s - stop bits = 1", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 591 | } |
| 592 | |
| 593 | if (cflag & PARENB) { |
| 594 | /* For reference buf[5]=0 is none parity */ |
| 595 | /* For reference buf[5]=1 is odd parity */ |
| 596 | /* For reference buf[5]=2 is even parity */ |
| 597 | /* For reference buf[5]=3 is mark parity */ |
| 598 | /* For reference buf[5]=4 is space parity */ |
| 599 | if (cflag & PARODD) { |
| 600 | buf[5] = 1; |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 601 | dbg("%s - parity = odd", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 602 | } else { |
| 603 | buf[5] = 2; |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 604 | dbg("%s - parity = even", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 605 | } |
| 606 | } else { |
| 607 | buf[5] = 0; |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 608 | dbg("%s - parity = none", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 609 | } |
| 610 | |
Thiago Galesi | 372db8a | 2006-07-31 15:39:27 -0300 | [diff] [blame] | 611 | i = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), |
| 612 | SET_LINE_REQUEST, SET_LINE_REQUEST_TYPE, |
| 613 | 0, 0, buf, 7, 100); |
| 614 | dbg("0x21:0x20:0:0 %d", i); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 615 | |
| 616 | /* change control lines if we are switching to or from B0 */ |
| 617 | spin_lock_irqsave(&priv->lock, flags); |
| 618 | control = priv->line_control; |
| 619 | if ((cflag & CBAUD) == B0) |
| 620 | priv->line_control &= ~(CONTROL_DTR | CONTROL_RTS); |
| 621 | else |
| 622 | priv->line_control |= (CONTROL_DTR | CONTROL_RTS); |
| 623 | if (control != priv->line_control) { |
| 624 | control = priv->line_control; |
| 625 | spin_unlock_irqrestore(&priv->lock, flags); |
| 626 | set_control_lines(serial->dev, control); |
| 627 | } else { |
| 628 | spin_unlock_irqrestore(&priv->lock, flags); |
| 629 | } |
Thiago Galesi | 372db8a | 2006-07-31 15:39:27 -0300 | [diff] [blame] | 630 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 631 | buf[0] = buf[1] = buf[2] = buf[3] = buf[4] = buf[5] = buf[6] = 0; |
| 632 | |
Thiago Galesi | 372db8a | 2006-07-31 15:39:27 -0300 | [diff] [blame] | 633 | i = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), |
| 634 | GET_LINE_REQUEST, GET_LINE_REQUEST_TYPE, |
| 635 | 0, 0, buf, 7, 100); |
| 636 | dbg("0xa1:0x21:0:0 %d - %x %x %x %x %x %x %x", i, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 637 | buf[0], buf[1], buf[2], buf[3], buf[4], buf[5], buf[6]); |
| 638 | |
| 639 | if (cflag & CRTSCTS) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 640 | if (priv->type == HX) |
Sarah Sharp | eb44da0 | 2007-12-14 14:08:00 -0800 | [diff] [blame] | 641 | pl2303_vendor_write(0x0, 0x61, serial); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 642 | else |
Sarah Sharp | eb44da0 | 2007-12-14 14:08:00 -0800 | [diff] [blame] | 643 | pl2303_vendor_write(0x0, 0x41, serial); |
t.sefzick | 715f952 | 2007-04-25 15:05:22 +0200 | [diff] [blame] | 644 | } else { |
Sarah Sharp | eb44da0 | 2007-12-14 14:08:00 -0800 | [diff] [blame] | 645 | pl2303_vendor_write(0x0, 0x0, serial); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 646 | } |
| 647 | |
Alan Cox | df64c47 | 2007-10-15 20:54:47 +0100 | [diff] [blame] | 648 | /* FIXME: Need to read back resulting baud rate */ |
| 649 | if (baud) |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 650 | tty_encode_baud_rate(tty, baud, baud); |
Alan Cox | df64c47 | 2007-10-15 20:54:47 +0100 | [diff] [blame] | 651 | |
Thiago Galesi | 372db8a | 2006-07-31 15:39:27 -0300 | [diff] [blame] | 652 | kfree(buf); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 653 | } |
| 654 | |
Alan Cox | 335f851 | 2009-06-11 12:26:29 +0100 | [diff] [blame] | 655 | static void pl2303_dtr_rts(struct usb_serial_port *port, int on) |
Thiago Galesi | 572d313 | 2006-07-29 10:46:37 -0300 | [diff] [blame] | 656 | { |
| 657 | struct pl2303_private *priv = usb_get_serial_port_data(port); |
| 658 | unsigned long flags; |
Alan Cox | 335f851 | 2009-06-11 12:26:29 +0100 | [diff] [blame] | 659 | u8 control; |
| 660 | |
| 661 | spin_lock_irqsave(&priv->lock, flags); |
| 662 | /* Change DTR and RTS */ |
| 663 | if (on) |
| 664 | priv->line_control |= (CONTROL_DTR | CONTROL_RTS); |
| 665 | else |
| 666 | priv->line_control &= ~(CONTROL_DTR | CONTROL_RTS); |
| 667 | control = priv->line_control; |
| 668 | spin_unlock_irqrestore(&priv->lock, flags); |
| 669 | set_control_lines(port->serial->dev, control); |
| 670 | } |
| 671 | |
| 672 | static void pl2303_close(struct usb_serial_port *port) |
| 673 | { |
| 674 | struct pl2303_private *priv = usb_get_serial_port_data(port); |
| 675 | unsigned long flags; |
Thiago Galesi | 572d313 | 2006-07-29 10:46:37 -0300 | [diff] [blame] | 676 | |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 677 | dbg("%s - port %d", __func__, port->number); |
Thiago Galesi | 572d313 | 2006-07-29 10:46:37 -0300 | [diff] [blame] | 678 | |
Thiago Galesi | 572d313 | 2006-07-29 10:46:37 -0300 | [diff] [blame] | 679 | spin_lock_irqsave(&priv->lock, flags); |
Thiago Galesi | 572d313 | 2006-07-29 10:46:37 -0300 | [diff] [blame] | 680 | /* clear out any remaining data in the buffer */ |
| 681 | pl2303_buf_clear(priv->buf); |
| 682 | spin_unlock_irqrestore(&priv->lock, flags); |
| 683 | |
Thiago Galesi | 572d313 | 2006-07-29 10:46:37 -0300 | [diff] [blame] | 684 | /* shutdown our urbs */ |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 685 | dbg("%s - shutting down urbs", __func__); |
Thiago Galesi | 572d313 | 2006-07-29 10:46:37 -0300 | [diff] [blame] | 686 | usb_kill_urb(port->write_urb); |
| 687 | usb_kill_urb(port->read_urb); |
| 688 | usb_kill_urb(port->interrupt_in_urb); |
| 689 | |
Thiago Galesi | 572d313 | 2006-07-29 10:46:37 -0300 | [diff] [blame] | 690 | } |
| 691 | |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 692 | static int pl2303_open(struct tty_struct *tty, |
| 693 | struct usb_serial_port *port, struct file *filp) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 694 | { |
Alan Cox | 606d099 | 2006-12-08 02:38:45 -0800 | [diff] [blame] | 695 | struct ktermios tmp_termios; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 696 | struct usb_serial *serial = port->serial; |
| 697 | struct pl2303_private *priv = usb_get_serial_port_data(port); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 698 | int result; |
| 699 | |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 700 | dbg("%s - port %d", __func__, port->number); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 701 | |
Dariusz M | 1694899 | 2005-07-28 18:06:13 +0200 | [diff] [blame] | 702 | if (priv->type != HX) { |
| 703 | usb_clear_halt(serial->dev, port->write_urb->pipe); |
| 704 | usb_clear_halt(serial->dev, port->read_urb->pipe); |
Sarah Sharp | 3e15250 | 2007-12-14 14:08:35 -0800 | [diff] [blame] | 705 | } else { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 706 | /* reset upstream data pipes */ |
Sarah Sharp | eb44da0 | 2007-12-14 14:08:00 -0800 | [diff] [blame] | 707 | pl2303_vendor_write(8, 0, serial); |
| 708 | pl2303_vendor_write(9, 0, serial); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 709 | } |
| 710 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 711 | /* Setup termios */ |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 712 | if (tty) |
| 713 | pl2303_set_termios(tty, port, &tmp_termios); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 714 | |
Alan Cox | 3a0f43e | 2008-07-22 11:14:49 +0100 | [diff] [blame] | 715 | /* FIXME: need to assert RTS and DTR if CRTSCTS off */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 716 | |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 717 | dbg("%s - submitting read urb", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 718 | port->read_urb->dev = serial->dev; |
Thiago Galesi | 372db8a | 2006-07-31 15:39:27 -0300 | [diff] [blame] | 719 | result = usb_submit_urb(port->read_urb, GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 720 | if (result) { |
Thiago Galesi | 372db8a | 2006-07-31 15:39:27 -0300 | [diff] [blame] | 721 | dev_err(&port->dev, "%s - failed submitting read urb," |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 722 | " error %d\n", __func__, result); |
Alan Cox | 335f851 | 2009-06-11 12:26:29 +0100 | [diff] [blame] | 723 | pl2303_close(port); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 724 | return -EPROTO; |
| 725 | } |
| 726 | |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 727 | dbg("%s - submitting interrupt urb", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 728 | port->interrupt_in_urb->dev = serial->dev; |
Thiago Galesi | 372db8a | 2006-07-31 15:39:27 -0300 | [diff] [blame] | 729 | result = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 730 | if (result) { |
Thiago Galesi | 372db8a | 2006-07-31 15:39:27 -0300 | [diff] [blame] | 731 | dev_err(&port->dev, "%s - failed submitting interrupt urb," |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 732 | " error %d\n", __func__, result); |
Alan Cox | 335f851 | 2009-06-11 12:26:29 +0100 | [diff] [blame] | 733 | pl2303_close(port); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 734 | return -EPROTO; |
| 735 | } |
Alan Cox | 335f851 | 2009-06-11 12:26:29 +0100 | [diff] [blame] | 736 | port->port.drain_delay = 256; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 737 | return 0; |
| 738 | } |
| 739 | |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 740 | static int pl2303_tiocmset(struct tty_struct *tty, struct file *file, |
Thiago Galesi | 372db8a | 2006-07-31 15:39:27 -0300 | [diff] [blame] | 741 | unsigned int set, unsigned int clear) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 742 | { |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 743 | struct usb_serial_port *port = tty->driver_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 744 | struct pl2303_private *priv = usb_get_serial_port_data(port); |
| 745 | unsigned long flags; |
| 746 | u8 control; |
| 747 | |
Flavio Leitner | 6fdd8e8 | 2005-04-18 17:39:31 -0700 | [diff] [blame] | 748 | if (!usb_get_intfdata(port->serial->interface)) |
| 749 | return -ENODEV; |
| 750 | |
Thiago Galesi | 372db8a | 2006-07-31 15:39:27 -0300 | [diff] [blame] | 751 | spin_lock_irqsave(&priv->lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 752 | if (set & TIOCM_RTS) |
| 753 | priv->line_control |= CONTROL_RTS; |
| 754 | if (set & TIOCM_DTR) |
| 755 | priv->line_control |= CONTROL_DTR; |
| 756 | if (clear & TIOCM_RTS) |
| 757 | priv->line_control &= ~CONTROL_RTS; |
| 758 | if (clear & TIOCM_DTR) |
| 759 | priv->line_control &= ~CONTROL_DTR; |
| 760 | control = priv->line_control; |
Thiago Galesi | 372db8a | 2006-07-31 15:39:27 -0300 | [diff] [blame] | 761 | spin_unlock_irqrestore(&priv->lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 762 | |
Thiago Galesi | 372db8a | 2006-07-31 15:39:27 -0300 | [diff] [blame] | 763 | return set_control_lines(port->serial->dev, control); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 764 | } |
| 765 | |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 766 | static int pl2303_tiocmget(struct tty_struct *tty, struct file *file) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 767 | { |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 768 | struct usb_serial_port *port = tty->driver_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 769 | struct pl2303_private *priv = usb_get_serial_port_data(port); |
| 770 | unsigned long flags; |
| 771 | unsigned int mcr; |
| 772 | unsigned int status; |
| 773 | unsigned int result; |
| 774 | |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 775 | dbg("%s (%d)", __func__, port->number); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 776 | |
Flavio Leitner | 6fdd8e8 | 2005-04-18 17:39:31 -0700 | [diff] [blame] | 777 | if (!usb_get_intfdata(port->serial->interface)) |
| 778 | return -ENODEV; |
| 779 | |
Thiago Galesi | 372db8a | 2006-07-31 15:39:27 -0300 | [diff] [blame] | 780 | spin_lock_irqsave(&priv->lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 781 | mcr = priv->line_control; |
| 782 | status = priv->line_status; |
Thiago Galesi | 372db8a | 2006-07-31 15:39:27 -0300 | [diff] [blame] | 783 | spin_unlock_irqrestore(&priv->lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 784 | |
| 785 | result = ((mcr & CONTROL_DTR) ? TIOCM_DTR : 0) |
| 786 | | ((mcr & CONTROL_RTS) ? TIOCM_RTS : 0) |
| 787 | | ((status & UART_CTS) ? TIOCM_CTS : 0) |
| 788 | | ((status & UART_DSR) ? TIOCM_DSR : 0) |
| 789 | | ((status & UART_RING) ? TIOCM_RI : 0) |
| 790 | | ((status & UART_DCD) ? TIOCM_CD : 0); |
| 791 | |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 792 | dbg("%s - result = %x", __func__, result); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 793 | |
| 794 | return result; |
| 795 | } |
| 796 | |
Alan Cox | 335f851 | 2009-06-11 12:26:29 +0100 | [diff] [blame] | 797 | static int pl2303_carrier_raised(struct usb_serial_port *port) |
| 798 | { |
| 799 | struct pl2303_private *priv = usb_get_serial_port_data(port); |
| 800 | if (priv->line_status & UART_DCD) |
| 801 | return 1; |
| 802 | return 0; |
| 803 | } |
| 804 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 805 | static int wait_modem_info(struct usb_serial_port *port, unsigned int arg) |
| 806 | { |
| 807 | struct pl2303_private *priv = usb_get_serial_port_data(port); |
| 808 | unsigned long flags; |
| 809 | unsigned int prevstatus; |
| 810 | unsigned int status; |
| 811 | unsigned int changed; |
| 812 | |
Thiago Galesi | 372db8a | 2006-07-31 15:39:27 -0300 | [diff] [blame] | 813 | spin_lock_irqsave(&priv->lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 814 | prevstatus = priv->line_status; |
Thiago Galesi | 372db8a | 2006-07-31 15:39:27 -0300 | [diff] [blame] | 815 | spin_unlock_irqrestore(&priv->lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 816 | |
| 817 | while (1) { |
| 818 | interruptible_sleep_on(&priv->delta_msr_wait); |
| 819 | /* see if a signal did it */ |
| 820 | if (signal_pending(current)) |
| 821 | return -ERESTARTSYS; |
Thiago Galesi | 372db8a | 2006-07-31 15:39:27 -0300 | [diff] [blame] | 822 | |
| 823 | spin_lock_irqsave(&priv->lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 824 | status = priv->line_status; |
Thiago Galesi | 372db8a | 2006-07-31 15:39:27 -0300 | [diff] [blame] | 825 | spin_unlock_irqrestore(&priv->lock, flags); |
| 826 | |
Alan Cox | 3a0f43e | 2008-07-22 11:14:49 +0100 | [diff] [blame] | 827 | changed = prevstatus ^ status; |
Thiago Galesi | 372db8a | 2006-07-31 15:39:27 -0300 | [diff] [blame] | 828 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 829 | if (((arg & TIOCM_RNG) && (changed & UART_RING)) || |
| 830 | ((arg & TIOCM_DSR) && (changed & UART_DSR)) || |
| 831 | ((arg & TIOCM_CD) && (changed & UART_DCD)) || |
Alan Cox | 3a0f43e | 2008-07-22 11:14:49 +0100 | [diff] [blame] | 832 | ((arg & TIOCM_CTS) && (changed & UART_CTS))) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 833 | return 0; |
| 834 | } |
| 835 | prevstatus = status; |
| 836 | } |
| 837 | /* NOTREACHED */ |
| 838 | return 0; |
| 839 | } |
| 840 | |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 841 | static int pl2303_ioctl(struct tty_struct *tty, struct file *file, |
Thiago Galesi | 372db8a | 2006-07-31 15:39:27 -0300 | [diff] [blame] | 842 | unsigned int cmd, unsigned long arg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 843 | { |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 844 | struct usb_serial_port *port = tty->driver_data; |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 845 | dbg("%s (%d) cmd = 0x%04x", __func__, port->number, cmd); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 846 | |
| 847 | switch (cmd) { |
Alan Cox | 3a0f43e | 2008-07-22 11:14:49 +0100 | [diff] [blame] | 848 | case TIOCMIWAIT: |
| 849 | dbg("%s (%d) TIOCMIWAIT", __func__, port->number); |
| 850 | return wait_modem_info(port, arg); |
| 851 | default: |
| 852 | dbg("%s not supported = 0x%04x", __func__, cmd); |
| 853 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 854 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 855 | return -ENOIOCTLCMD; |
| 856 | } |
| 857 | |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 858 | static void pl2303_break_ctl(struct tty_struct *tty, int break_state) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 859 | { |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 860 | struct usb_serial_port *port = tty->driver_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 861 | struct usb_serial *serial = port->serial; |
| 862 | u16 state; |
| 863 | int result; |
| 864 | |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 865 | dbg("%s - port %d", __func__, port->number); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 866 | |
| 867 | if (break_state == 0) |
| 868 | state = BREAK_OFF; |
| 869 | else |
| 870 | state = BREAK_ON; |
Alan Cox | 3a0f43e | 2008-07-22 11:14:49 +0100 | [diff] [blame] | 871 | dbg("%s - turning break %s", __func__, |
| 872 | state == BREAK_OFF ? "off" : "on"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 873 | |
Thiago Galesi | 372db8a | 2006-07-31 15:39:27 -0300 | [diff] [blame] | 874 | result = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), |
| 875 | BREAK_REQUEST, BREAK_REQUEST_TYPE, state, |
| 876 | 0, NULL, 0, 100); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 877 | if (result) |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 878 | dbg("%s - error sending break = %d", __func__, result); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 879 | } |
| 880 | |
Alan Stern | f9c99bb | 2009-06-02 11:53:55 -0400 | [diff] [blame] | 881 | static void pl2303_release(struct usb_serial *serial) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 882 | { |
| 883 | int i; |
| 884 | struct pl2303_private *priv; |
| 885 | |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 886 | dbg("%s", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 887 | |
| 888 | for (i = 0; i < serial->num_ports; ++i) { |
| 889 | priv = usb_get_serial_port_data(serial->port[i]); |
| 890 | if (priv) { |
| 891 | pl2303_buf_free(priv->buf); |
| 892 | kfree(priv); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 893 | } |
Thiago Galesi | 372db8a | 2006-07-31 15:39:27 -0300 | [diff] [blame] | 894 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 895 | } |
| 896 | |
Flavio Leitner | 97bb13e | 2005-04-18 17:39:31 -0700 | [diff] [blame] | 897 | static void pl2303_update_line_status(struct usb_serial_port *port, |
| 898 | unsigned char *data, |
| 899 | unsigned int actual_length) |
| 900 | { |
| 901 | |
| 902 | struct pl2303_private *priv = usb_get_serial_port_data(port); |
| 903 | unsigned long flags; |
| 904 | u8 status_idx = UART_STATE; |
Horst Schirmeier | 95f209f | 2005-07-28 15:32:20 +0200 | [diff] [blame] | 905 | u8 length = UART_STATE + 1; |
Thiago Galesi | 9c53761 | 2006-07-29 10:47:12 -0300 | [diff] [blame] | 906 | u16 idv, idp; |
Flavio Leitner | 97bb13e | 2005-04-18 17:39:31 -0700 | [diff] [blame] | 907 | |
Thiago Galesi | 9c53761 | 2006-07-29 10:47:12 -0300 | [diff] [blame] | 908 | idv = le16_to_cpu(port->serial->dev->descriptor.idVendor); |
| 909 | idp = le16_to_cpu(port->serial->dev->descriptor.idProduct); |
| 910 | |
| 911 | |
| 912 | if (idv == SIEMENS_VENDOR_ID) { |
| 913 | if (idp == SIEMENS_PRODUCT_ID_X65 || |
| 914 | idp == SIEMENS_PRODUCT_ID_SX1 || |
| 915 | idp == SIEMENS_PRODUCT_ID_X75) { |
| 916 | |
| 917 | length = 1; |
| 918 | status_idx = 0; |
| 919 | } |
Flavio Leitner | 97bb13e | 2005-04-18 17:39:31 -0700 | [diff] [blame] | 920 | } |
| 921 | |
| 922 | if (actual_length < length) |
Luiz Fernando N. Capitulino | a009b75 | 2006-07-25 16:58:30 -0300 | [diff] [blame] | 923 | return; |
Flavio Leitner | 97bb13e | 2005-04-18 17:39:31 -0700 | [diff] [blame] | 924 | |
Alan Cox | 3a0f43e | 2008-07-22 11:14:49 +0100 | [diff] [blame] | 925 | /* Save off the uart status for others to look at */ |
Flavio Leitner | 97bb13e | 2005-04-18 17:39:31 -0700 | [diff] [blame] | 926 | spin_lock_irqsave(&priv->lock, flags); |
| 927 | priv->line_status = data[status_idx]; |
| 928 | spin_unlock_irqrestore(&priv->lock, flags); |
Jason Wessel | 430eb0d | 2009-05-29 13:34:16 -0500 | [diff] [blame] | 929 | if (priv->line_status & UART_BREAK_ERROR) |
| 930 | usb_serial_handle_break(port); |
Thiago Galesi | 372db8a | 2006-07-31 15:39:27 -0300 | [diff] [blame] | 931 | wake_up_interruptible(&priv->delta_msr_wait); |
Flavio Leitner | 97bb13e | 2005-04-18 17:39:31 -0700 | [diff] [blame] | 932 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 933 | |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 934 | static void pl2303_read_int_callback(struct urb *urb) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 935 | { |
Ming Lei | cdc9779 | 2008-02-24 18:41:47 +0800 | [diff] [blame] | 936 | struct usb_serial_port *port = urb->context; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 937 | unsigned char *data = urb->transfer_buffer; |
Flavio Leitner | 97bb13e | 2005-04-18 17:39:31 -0700 | [diff] [blame] | 938 | unsigned int actual_length = urb->actual_length; |
Greg Kroah-Hartman | 461d696 | 2007-06-15 15:44:13 -0700 | [diff] [blame] | 939 | int status = urb->status; |
| 940 | int retval; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 941 | |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 942 | dbg("%s (%d)", __func__, port->number); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 943 | |
Greg Kroah-Hartman | 461d696 | 2007-06-15 15:44:13 -0700 | [diff] [blame] | 944 | switch (status) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 945 | case 0: |
| 946 | /* success */ |
| 947 | break; |
| 948 | case -ECONNRESET: |
| 949 | case -ENOENT: |
| 950 | case -ESHUTDOWN: |
| 951 | /* this urb is terminated, clean up */ |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 952 | dbg("%s - urb shutting down with status: %d", __func__, |
Greg Kroah-Hartman | 461d696 | 2007-06-15 15:44:13 -0700 | [diff] [blame] | 953 | status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 954 | return; |
| 955 | default: |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 956 | dbg("%s - nonzero urb status received: %d", __func__, |
Greg Kroah-Hartman | 461d696 | 2007-06-15 15:44:13 -0700 | [diff] [blame] | 957 | status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 958 | goto exit; |
| 959 | } |
| 960 | |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 961 | usb_serial_debug_data(debug, &port->dev, __func__, |
Thiago Galesi | 372db8a | 2006-07-31 15:39:27 -0300 | [diff] [blame] | 962 | urb->actual_length, urb->transfer_buffer); |
| 963 | |
Flavio Leitner | 97bb13e | 2005-04-18 17:39:31 -0700 | [diff] [blame] | 964 | pl2303_update_line_status(port, data, actual_length); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 965 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 966 | exit: |
Greg Kroah-Hartman | 461d696 | 2007-06-15 15:44:13 -0700 | [diff] [blame] | 967 | retval = usb_submit_urb(urb, GFP_ATOMIC); |
| 968 | if (retval) |
Thiago Galesi | 372db8a | 2006-07-31 15:39:27 -0300 | [diff] [blame] | 969 | dev_err(&urb->dev->dev, |
| 970 | "%s - usb_submit_urb failed with result %d\n", |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 971 | __func__, retval); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 972 | } |
| 973 | |
Alan Cox | d4fc4a7 | 2009-07-09 13:36:58 +0100 | [diff] [blame] | 974 | static void pl2303_push_data(struct tty_struct *tty, |
| 975 | struct usb_serial_port *port, struct urb *urb, |
| 976 | u8 line_status) |
| 977 | { |
| 978 | unsigned char *data = urb->transfer_buffer; |
| 979 | /* get tty_flag from status */ |
| 980 | char tty_flag = TTY_NORMAL; |
| 981 | /* break takes precedence over parity, */ |
| 982 | /* which takes precedence over framing errors */ |
| 983 | if (line_status & UART_BREAK_ERROR) |
| 984 | tty_flag = TTY_BREAK; |
| 985 | else if (line_status & UART_PARITY_ERROR) |
| 986 | tty_flag = TTY_PARITY; |
| 987 | else if (line_status & UART_FRAME_ERROR) |
| 988 | tty_flag = TTY_FRAME; |
| 989 | dbg("%s - tty_flag = %d", __func__, tty_flag); |
| 990 | |
| 991 | tty_buffer_request_room(tty, urb->actual_length + 1); |
| 992 | /* overrun is special, not associated with a char */ |
| 993 | if (line_status & UART_OVERRUN_ERROR) |
| 994 | tty_insert_flip_char(tty, 0, TTY_OVERRUN); |
| 995 | if (port->console && port->sysrq) { |
| 996 | int i; |
| 997 | for (i = 0; i < urb->actual_length; ++i) |
| 998 | if (!usb_serial_handle_sysrq_char(tty, port, data[i])) |
| 999 | tty_insert_flip_char(tty, data[i], tty_flag); |
| 1000 | } else |
| 1001 | tty_insert_flip_string(tty, data, urb->actual_length); |
| 1002 | tty_flip_buffer_push(tty); |
| 1003 | } |
| 1004 | |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 1005 | static void pl2303_read_bulk_callback(struct urb *urb) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1006 | { |
Ming Lei | cdc9779 | 2008-02-24 18:41:47 +0800 | [diff] [blame] | 1007 | struct usb_serial_port *port = urb->context; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1008 | struct pl2303_private *priv = usb_get_serial_port_data(port); |
| 1009 | struct tty_struct *tty; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1010 | unsigned long flags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1011 | int result; |
Greg Kroah-Hartman | 461d696 | 2007-06-15 15:44:13 -0700 | [diff] [blame] | 1012 | int status = urb->status; |
| 1013 | u8 line_status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1014 | |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 1015 | dbg("%s - port %d", __func__, port->number); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1016 | |
Greg Kroah-Hartman | 461d696 | 2007-06-15 15:44:13 -0700 | [diff] [blame] | 1017 | if (status) { |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 1018 | dbg("%s - urb status = %d", __func__, status); |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 1019 | if (!port->port.count) { |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 1020 | dbg("%s - port is closed, exiting.", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1021 | return; |
| 1022 | } |
Greg Kroah-Hartman | 461d696 | 2007-06-15 15:44:13 -0700 | [diff] [blame] | 1023 | if (status == -EPROTO) { |
Thiago Galesi | 372db8a | 2006-07-31 15:39:27 -0300 | [diff] [blame] | 1024 | /* PL2303 mysteriously fails with -EPROTO reschedule |
| 1025 | * the read */ |
| 1026 | dbg("%s - caught -EPROTO, resubmitting the urb", |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 1027 | __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1028 | urb->dev = port->serial->dev; |
| 1029 | result = usb_submit_urb(urb, GFP_ATOMIC); |
| 1030 | if (result) |
Thiago Galesi | 372db8a | 2006-07-31 15:39:27 -0300 | [diff] [blame] | 1031 | dev_err(&urb->dev->dev, "%s - failed" |
| 1032 | " resubmitting read urb, error %d\n", |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 1033 | __func__, result); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1034 | return; |
| 1035 | } |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 1036 | dbg("%s - unable to handle the error, exiting.", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1037 | return; |
| 1038 | } |
| 1039 | |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 1040 | usb_serial_debug_data(debug, &port->dev, __func__, |
Alan Cox | d4fc4a7 | 2009-07-09 13:36:58 +0100 | [diff] [blame] | 1041 | urb->actual_length, urb->transfer_buffer); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1042 | |
| 1043 | spin_lock_irqsave(&priv->lock, flags); |
Greg Kroah-Hartman | 461d696 | 2007-06-15 15:44:13 -0700 | [diff] [blame] | 1044 | line_status = priv->line_status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1045 | priv->line_status &= ~UART_STATE_TRANSIENT_MASK; |
| 1046 | spin_unlock_irqrestore(&priv->lock, flags); |
Thiago Galesi | 372db8a | 2006-07-31 15:39:27 -0300 | [diff] [blame] | 1047 | wake_up_interruptible(&priv->delta_msr_wait); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1048 | |
Alan Cox | 4a90f09 | 2008-10-13 10:39:46 +0100 | [diff] [blame] | 1049 | tty = tty_port_tty_get(&port->port); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1050 | if (tty && urb->actual_length) { |
Alan Cox | d4fc4a7 | 2009-07-09 13:36:58 +0100 | [diff] [blame] | 1051 | pl2303_push_data(tty, port, urb, line_status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1052 | } |
Alan Cox | 4a90f09 | 2008-10-13 10:39:46 +0100 | [diff] [blame] | 1053 | tty_kref_put(tty); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1054 | /* Schedule the next read _if_ we are still open */ |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 1055 | if (port->port.count) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1056 | urb->dev = port->serial->dev; |
| 1057 | result = usb_submit_urb(urb, GFP_ATOMIC); |
| 1058 | if (result) |
Thiago Galesi | 372db8a | 2006-07-31 15:39:27 -0300 | [diff] [blame] | 1059 | dev_err(&urb->dev->dev, "%s - failed resubmitting" |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 1060 | " read urb, error %d\n", __func__, result); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1061 | } |
| 1062 | |
| 1063 | return; |
| 1064 | } |
| 1065 | |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 1066 | static void pl2303_write_bulk_callback(struct urb *urb) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1067 | { |
Ming Lei | cdc9779 | 2008-02-24 18:41:47 +0800 | [diff] [blame] | 1068 | struct usb_serial_port *port = urb->context; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1069 | struct pl2303_private *priv = usb_get_serial_port_data(port); |
| 1070 | int result; |
Greg Kroah-Hartman | 461d696 | 2007-06-15 15:44:13 -0700 | [diff] [blame] | 1071 | int status = urb->status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1072 | |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 1073 | dbg("%s - port %d", __func__, port->number); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1074 | |
Greg Kroah-Hartman | 461d696 | 2007-06-15 15:44:13 -0700 | [diff] [blame] | 1075 | switch (status) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1076 | case 0: |
| 1077 | /* success */ |
| 1078 | break; |
| 1079 | case -ECONNRESET: |
| 1080 | case -ENOENT: |
| 1081 | case -ESHUTDOWN: |
| 1082 | /* this urb is terminated, clean up */ |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 1083 | dbg("%s - urb shutting down with status: %d", __func__, |
Greg Kroah-Hartman | 461d696 | 2007-06-15 15:44:13 -0700 | [diff] [blame] | 1084 | status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1085 | priv->write_urb_in_use = 0; |
| 1086 | return; |
| 1087 | default: |
| 1088 | /* error in the urb, so we have to resubmit it */ |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 1089 | dbg("%s - Overflow in write", __func__); |
| 1090 | dbg("%s - nonzero write bulk status received: %d", __func__, |
Greg Kroah-Hartman | 461d696 | 2007-06-15 15:44:13 -0700 | [diff] [blame] | 1091 | status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1092 | port->write_urb->transfer_buffer_length = 1; |
| 1093 | port->write_urb->dev = port->serial->dev; |
Thiago Galesi | 372db8a | 2006-07-31 15:39:27 -0300 | [diff] [blame] | 1094 | result = usb_submit_urb(port->write_urb, GFP_ATOMIC); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1095 | if (result) |
Thiago Galesi | 372db8a | 2006-07-31 15:39:27 -0300 | [diff] [blame] | 1096 | dev_err(&urb->dev->dev, "%s - failed resubmitting write" |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 1097 | " urb, error %d\n", __func__, result); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1098 | else |
| 1099 | return; |
| 1100 | } |
| 1101 | |
| 1102 | priv->write_urb_in_use = 0; |
| 1103 | |
| 1104 | /* send any buffered data */ |
| 1105 | pl2303_send(port); |
| 1106 | } |
| 1107 | |
Thiago Galesi | 572d313 | 2006-07-29 10:46:37 -0300 | [diff] [blame] | 1108 | /* All of the device info needed for the PL2303 SIO serial converter */ |
| 1109 | static struct usb_serial_driver pl2303_device = { |
| 1110 | .driver = { |
| 1111 | .owner = THIS_MODULE, |
| 1112 | .name = "pl2303", |
| 1113 | }, |
| 1114 | .id_table = id_table, |
Johannes Hölzl | d9b1b78 | 2006-12-17 21:50:24 +0100 | [diff] [blame] | 1115 | .usb_driver = &pl2303_driver, |
Thiago Galesi | 572d313 | 2006-07-29 10:46:37 -0300 | [diff] [blame] | 1116 | .num_ports = 1, |
| 1117 | .open = pl2303_open, |
| 1118 | .close = pl2303_close, |
Alan Cox | 335f851 | 2009-06-11 12:26:29 +0100 | [diff] [blame] | 1119 | .dtr_rts = pl2303_dtr_rts, |
| 1120 | .carrier_raised = pl2303_carrier_raised, |
Thiago Galesi | 572d313 | 2006-07-29 10:46:37 -0300 | [diff] [blame] | 1121 | .write = pl2303_write, |
| 1122 | .ioctl = pl2303_ioctl, |
| 1123 | .break_ctl = pl2303_break_ctl, |
| 1124 | .set_termios = pl2303_set_termios, |
| 1125 | .tiocmget = pl2303_tiocmget, |
| 1126 | .tiocmset = pl2303_tiocmset, |
| 1127 | .read_bulk_callback = pl2303_read_bulk_callback, |
| 1128 | .read_int_callback = pl2303_read_int_callback, |
| 1129 | .write_bulk_callback = pl2303_write_bulk_callback, |
| 1130 | .write_room = pl2303_write_room, |
| 1131 | .chars_in_buffer = pl2303_chars_in_buffer, |
| 1132 | .attach = pl2303_startup, |
Alan Stern | f9c99bb | 2009-06-02 11:53:55 -0400 | [diff] [blame] | 1133 | .release = pl2303_release, |
Thiago Galesi | 572d313 | 2006-07-29 10:46:37 -0300 | [diff] [blame] | 1134 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1135 | |
Thiago Galesi | 372db8a | 2006-07-31 15:39:27 -0300 | [diff] [blame] | 1136 | static int __init pl2303_init(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1137 | { |
| 1138 | int retval; |
Thiago Galesi | 372db8a | 2006-07-31 15:39:27 -0300 | [diff] [blame] | 1139 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1140 | retval = usb_serial_register(&pl2303_device); |
| 1141 | if (retval) |
| 1142 | goto failed_usb_serial_register; |
| 1143 | retval = usb_register(&pl2303_driver); |
| 1144 | if (retval) |
| 1145 | goto failed_usb_register; |
Greg Kroah-Hartman | c197a8d | 2008-08-18 13:21:04 -0700 | [diff] [blame] | 1146 | printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_DESC "\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1147 | return 0; |
| 1148 | failed_usb_register: |
| 1149 | usb_serial_deregister(&pl2303_device); |
| 1150 | failed_usb_serial_register: |
| 1151 | return retval; |
| 1152 | } |
| 1153 | |
Thiago Galesi | 372db8a | 2006-07-31 15:39:27 -0300 | [diff] [blame] | 1154 | static void __exit pl2303_exit(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1155 | { |
Thiago Galesi | 372db8a | 2006-07-31 15:39:27 -0300 | [diff] [blame] | 1156 | usb_deregister(&pl2303_driver); |
| 1157 | usb_serial_deregister(&pl2303_device); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1158 | } |
| 1159 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1160 | module_init(pl2303_init); |
| 1161 | module_exit(pl2303_exit); |
| 1162 | |
| 1163 | MODULE_DESCRIPTION(DRIVER_DESC); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1164 | MODULE_LICENSE("GPL"); |
| 1165 | |
| 1166 | module_param(debug, bool, S_IRUGO | S_IWUSR); |
| 1167 | MODULE_PARM_DESC(debug, "Debug enabled or not"); |
| 1168 | |