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tty: revert incorrectly applied lock patch
[linux-2.6-block.git] / drivers / usb / serial / spcp8x5.c
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619a6f1d
GKH		 1/*
2 * spcp8x5 USB to serial adaptor driver
3 *
fa993ca8 4 * Copyright (C) 2010 Johan Hovold (jhovold@gmail.com)
619a6f1d
GKH		 5 * Copyright (C) 2006 Linxb (xubin.lin@worldplus.com.cn)
6 * Copyright (C) 2006 S1 Corp.
7 *
8 * Original driver for 2.6.10 pl2303 driver by
9 * Greg Kroah-Hartman (greg@kroah.com)
10 * Changes for 2.6.20 by Harald Klein <hari@vt100.at>
11 *
12 * This program is free software; you can redistribute it and/or modify
13 * it under the terms of the GNU General Public License as published by
14 * the Free Software Foundation; either version 2 of the License, or
15 * (at your option) any later version.
16 *
17 *
18 */
19#include <linux/kernel.h>
20#include <linux/errno.h>
21#include <linux/init.h>
22#include <linux/slab.h>
23#include <linux/tty.h>
24#include <linux/tty_driver.h>
25#include <linux/tty_flip.h>
26#include <linux/module.h>
27#include <linux/spinlock.h>
28#include <linux/usb.h>
29#include <linux/usb/serial.h>
30
31
32/* Version Information */
fa993ca8 33#define DRIVER_VERSION "v0.10"
619a6f1d
GKH		 34#define DRIVER_DESC "SPCP8x5 USB to serial adaptor driver"
35
90ab5ee9 36static bool debug;
619a6f1d
GKH		 37
38#define SPCP8x5_007_VID 0x04FC
39#define SPCP8x5_007_PID 0x0201
40#define SPCP8x5_008_VID 0x04fc
41#define SPCP8x5_008_PID 0x0235
42#define SPCP8x5_PHILIPS_VID 0x0471
43#define SPCP8x5_PHILIPS_PID 0x081e
44#define SPCP8x5_INTERMATIC_VID 0x04FC
45#define SPCP8x5_INTERMATIC_PID 0x0204
46#define SPCP8x5_835_VID 0x04fc
47#define SPCP8x5_835_PID 0x0231
48
7d40d7e8 49static const struct usb_device_id id_table[] = {
619a6f1d
GKH		 50 { USB_DEVICE(SPCP8x5_PHILIPS_VID , SPCP8x5_PHILIPS_PID)},
51 { USB_DEVICE(SPCP8x5_INTERMATIC_VID, SPCP8x5_INTERMATIC_PID)},
52 { USB_DEVICE(SPCP8x5_835_VID, SPCP8x5_835_PID)},
53 { USB_DEVICE(SPCP8x5_008_VID, SPCP8x5_008_PID)},
54 { USB_DEVICE(SPCP8x5_007_VID, SPCP8x5_007_PID)},
55 { } /* Terminating entry */
56};
57MODULE_DEVICE_TABLE(usb, id_table);
58
59struct spcp8x5_usb_ctrl_arg {
60 u8 type;
61 u8 cmd;
62 u8 cmd_type;
63 u16 value;
64 u16 index;
65 u16 length;
66};
67
619a6f1d
GKH		 68
69/* spcp8x5 spec register define */
70#define MCR_CONTROL_LINE_RTS 0x02
71#define MCR_CONTROL_LINE_DTR 0x01
72#define MCR_DTR 0x01
73#define MCR_RTS 0x02
74
75#define MSR_STATUS_LINE_DCD 0x80
76#define MSR_STATUS_LINE_RI 0x40
77#define MSR_STATUS_LINE_DSR 0x20
78#define MSR_STATUS_LINE_CTS 0x10
79
80/* verdor command here , we should define myself */
81#define SET_DEFAULT 0x40
82#define SET_DEFAULT_TYPE 0x20
83
84#define SET_UART_FORMAT 0x40
85#define SET_UART_FORMAT_TYPE 0x21
86#define SET_UART_FORMAT_SIZE_5 0x00
87#define SET_UART_FORMAT_SIZE_6 0x01
88#define SET_UART_FORMAT_SIZE_7 0x02
89#define SET_UART_FORMAT_SIZE_8 0x03
90#define SET_UART_FORMAT_STOP_1 0x00
91#define SET_UART_FORMAT_STOP_2 0x04
92#define SET_UART_FORMAT_PAR_NONE 0x00
93#define SET_UART_FORMAT_PAR_ODD 0x10
94#define SET_UART_FORMAT_PAR_EVEN 0x30
95#define SET_UART_FORMAT_PAR_MASK 0xD0
96#define SET_UART_FORMAT_PAR_SPACE 0x90
97
98#define GET_UART_STATUS_TYPE 0xc0
99#define GET_UART_STATUS 0x22
100#define GET_UART_STATUS_MSR 0x06
101
102#define SET_UART_STATUS 0x40
103#define SET_UART_STATUS_TYPE 0x23
104#define SET_UART_STATUS_MCR 0x0004
105#define SET_UART_STATUS_MCR_DTR 0x01
106#define SET_UART_STATUS_MCR_RTS 0x02
107#define SET_UART_STATUS_MCR_LOOP 0x10
108
109#define SET_WORKING_MODE 0x40
110#define SET_WORKING_MODE_TYPE 0x24
111#define SET_WORKING_MODE_U2C 0x00
112#define SET_WORKING_MODE_RS485 0x01
113#define SET_WORKING_MODE_PDMA 0x02
114#define SET_WORKING_MODE_SPP 0x03
115
116#define SET_FLOWCTL_CHAR 0x40
117#define SET_FLOWCTL_CHAR_TYPE 0x25
118
119#define GET_VERSION 0xc0
120#define GET_VERSION_TYPE 0x26
121
122#define SET_REGISTER 0x40
123#define SET_REGISTER_TYPE 0x27
124
125#define GET_REGISTER 0xc0
126#define GET_REGISTER_TYPE 0x28
127
128#define SET_RAM 0x40
129#define SET_RAM_TYPE 0x31
130
131#define GET_RAM 0xc0
132#define GET_RAM_TYPE 0x32
133
134/* how come ??? */
135#define UART_STATE 0x08
d14fc1a7 136#define UART_STATE_TRANSIENT_MASK 0x75
619a6f1d
GKH		 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
146enum spcp8x5_type {
147 SPCP825_007_TYPE,
148 SPCP825_008_TYPE,
149 SPCP825_PHILIP_TYPE,
150 SPCP825_INTERMATIC_TYPE,
151 SPCP835_TYPE,
152};
153
619a6f1d
GKH		 154struct spcp8x5_private {
155 spinlock_t lock;
619a6f1d
GKH		 156 enum spcp8x5_type type;
157 wait_queue_head_t delta_msr_wait;
158 u8 line_control;
159 u8 line_status;
619a6f1d
GKH		 160};
161
162/* desc : when device plug in,this function would be called.
163 * thanks to usb_serial subsystem,then do almost every things for us. And what
164 * we should do just alloc the buffer */
165static int spcp8x5_startup(struct usb_serial *serial)
166{
167 struct spcp8x5_private *priv;
168 int i;
169 enum spcp8x5_type type = SPCP825_007_TYPE;
fd05e720 170 u16 product = le16_to_cpu(serial->dev->descriptor.idProduct);
619a6f1d 171
fd05e720 172 if (product == 0x0201)
619a6f1d 173 type = SPCP825_007_TYPE;
fd05e720 174 else if (product == 0x0231)
619a6f1d 175 type = SPCP835_TYPE;
fd05e720 176 else if (product == 0x0235)
619a6f1d 177 type = SPCP825_008_TYPE;
fd05e720 178 else if (product == 0x0204)
619a6f1d 179 type = SPCP825_INTERMATIC_TYPE;
fd05e720
AV		 180 else if (product == 0x0471 &&
181 serial->dev->descriptor.idVendor == cpu_to_le16(0x081e))
619a6f1d
GKH		 182 type = SPCP825_PHILIP_TYPE;
183 dev_dbg(&serial->dev->dev, "device type = %d\n", (int)type);
184
185 for (i = 0; i < serial->num_ports; ++i) {
186 priv = kzalloc(sizeof(struct spcp8x5_private), GFP_KERNEL);
187 if (!priv)
188 goto cleanup;
189
190 spin_lock_init(&priv->lock);
619a6f1d
GKH		 191 init_waitqueue_head(&priv->delta_msr_wait);
192 priv->type = type;
193 usb_set_serial_port_data(serial->port[i] , priv);
619a6f1d
GKH		 194 }
195
196 return 0;
619a6f1d
GKH		 197cleanup:
198 for (--i; i >= 0; --i) {
199 priv = usb_get_serial_port_data(serial->port[i]);
619a6f1d
GKH		 200 kfree(priv);
201 usb_set_serial_port_data(serial->port[i] , NULL);
202 }
203 return -ENOMEM;
204}
205
206/* call when the device plug out. free all the memory alloced by probe */
f9c99bb8 207static void spcp8x5_release(struct usb_serial *serial)
619a6f1d
GKH		 208{
209 int i;
619a6f1d 210
fa993ca8
JH		 211 for (i = 0; i < serial->num_ports; i++)
212 kfree(usb_get_serial_port_data(serial->port[i]));
619a6f1d
GKH		 213}
214
215/* set the modem control line of the device.
216 * NOTE spcp825-007 not supported this */
217static int spcp8x5_set_ctrlLine(struct usb_device *dev, u8 value,
218 enum spcp8x5_type type)
219{
220 int retval;
221 u8 mcr = 0 ;
222
223 if (type == SPCP825_007_TYPE)
224 return -EPERM;
225
226 mcr = (unsigned short)value;
227 retval = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
228 SET_UART_STATUS_TYPE, SET_UART_STATUS,
229 mcr, 0x04, NULL, 0, 100);
230 if (retval != 0)
231 dev_dbg(&dev->dev, "usb_control_msg return %#x\n", retval);
232 return retval;
233}
234
235/* get the modem status register of the device
236 * NOTE spcp825-007 not supported this */
237static int spcp8x5_get_msr(struct usb_device *dev, u8 *status,
238 enum spcp8x5_type type)
239{
240 u8 *status_buffer;
241 int ret;
242
243 /* I return Permited not support here but seem inval device
244 * is more fix */
245 if (type == SPCP825_007_TYPE)
246 return -EPERM;
247 if (status == NULL)
248 return -EINVAL;
249
250 status_buffer = kmalloc(1, GFP_KERNEL);
251 if (!status_buffer)
252 return -ENOMEM;
253 status_buffer[0] = status[0];
254
255 ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
256 GET_UART_STATUS, GET_UART_STATUS_TYPE,
257 0, GET_UART_STATUS_MSR, status_buffer, 1, 100);
258 if (ret < 0)
259 dev_dbg(&dev->dev, "Get MSR = 0x%p failed (error = %d)",
260 status_buffer, ret);
261
262 dev_dbg(&dev->dev, "0xc0:0x22:0:6 %d - 0x%p ", ret, status_buffer);
263 status[0] = status_buffer[0];
264 kfree(status_buffer);
265
266 return ret;
267}
268
269/* select the work mode.
270 * NOTE this function not supported by spcp825-007 */
271static void spcp8x5_set_workMode(struct usb_device *dev, u16 value,
272 u16 index, enum spcp8x5_type type)
273{
274 int ret;
275
276 /* I return Permited not support here but seem inval device
277 * is more fix */
278 if (type == SPCP825_007_TYPE)
279 return;
280
281 ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
282 SET_WORKING_MODE_TYPE, SET_WORKING_MODE,
283 value, index, NULL, 0, 100);
284 dev_dbg(&dev->dev, "value = %#x , index = %#x\n", value, index);
285 if (ret < 0)
286 dev_dbg(&dev->dev,
287 "RTSCTS usb_control_msg(enable flowctrl) = %d\n", ret);
288}
289
335f8514
AC		 290static int spcp8x5_carrier_raised(struct usb_serial_port *port)
291{
292 struct spcp8x5_private *priv = usb_get_serial_port_data(port);
293 if (priv->line_status & MSR_STATUS_LINE_DCD)
294 return 1;
295 return 0;
296}
297
298static void spcp8x5_dtr_rts(struct usb_serial_port *port, int on)
299{
300 struct spcp8x5_private *priv = usb_get_serial_port_data(port);
301 unsigned long flags;
302 u8 control;
303
304 spin_lock_irqsave(&priv->lock, flags);
305 if (on)
306 priv->line_control = MCR_CONTROL_LINE_DTR
307 | MCR_CONTROL_LINE_RTS;
308 else
309 priv->line_control &= ~ (MCR_CONTROL_LINE_DTR
310 | MCR_CONTROL_LINE_RTS);
311 control = priv->line_control;
312 spin_unlock_irqrestore(&priv->lock, flags);
313 spcp8x5_set_ctrlLine(port->serial->dev, control , priv->type);
314}
315
fe1ae7fd
AC		 316static void spcp8x5_init_termios(struct tty_struct *tty)
317{
318 /* for the 1st time call this function */
319 *(tty->termios) = tty_std_termios;
320 tty->termios->c_cflag = B115200 | CS8 | CREAD | HUPCL | CLOCAL;
321 tty->termios->c_ispeed = 115200;
322 tty->termios->c_ospeed = 115200;
323}
324
619a6f1d 325/* set the serial param for transfer. we should check if we really need to
95da310e
AC		 326 * transfer. if we set flow control we should do this too. */
327static void spcp8x5_set_termios(struct tty_struct *tty,
328 struct usb_serial_port *port, struct ktermios *old_termios)
619a6f1d
GKH		 329{
330 struct usb_serial *serial = port->serial;
331 struct spcp8x5_private *priv = usb_get_serial_port_data(port);
332 unsigned long flags;
95da310e 333 unsigned int cflag = tty->termios->c_cflag;
619a6f1d
GKH		 334 unsigned int old_cflag = old_termios->c_cflag;
335 unsigned short uartdata;
336 unsigned char buf[2] = {0, 0};
337 int baud;
338 int i;
339 u8 control;
340
619a6f1d
GKH		 341
342 /* check that they really want us to change something */
95da310e 343 if (!tty_termios_hw_change(tty->termios, old_termios))
619a6f1d
GKH		 344 return;
345
346 /* set DTR/RTS active */
347 spin_lock_irqsave(&priv->lock, flags);
348 control = priv->line_control;
349 if ((old_cflag & CBAUD) == B0) {
350 priv->line_control |= MCR_DTR;
351 if (!(old_cflag & CRTSCTS))
352 priv->line_control |= MCR_RTS;
353 }
354 if (control != priv->line_control) {
355 control = priv->line_control;
356 spin_unlock_irqrestore(&priv->lock, flags);
357 spcp8x5_set_ctrlLine(serial->dev, control , priv->type);
358 } else {
359 spin_unlock_irqrestore(&priv->lock, flags);
360 }
361
362 /* Set Baud Rate */
a419aef8 363 baud = tty_get_baud_rate(tty);
619a6f1d
GKH		 364 switch (baud) {
365 case 300: buf[0] = 0x00; break;
366 case 600: buf[0] = 0x01; break;
367 case 1200: buf[0] = 0x02; break;
368 case 2400: buf[0] = 0x03; break;
369 case 4800: buf[0] = 0x04; break;
370 case 9600: buf[0] = 0x05; break;
371 case 19200: buf[0] = 0x07; break;
372 case 38400: buf[0] = 0x09; break;
373 case 57600: buf[0] = 0x0a; break;
374 case 115200: buf[0] = 0x0b; break;
375 case 230400: buf[0] = 0x0c; break;
376 case 460800: buf[0] = 0x0d; break;
377 case 921600: buf[0] = 0x0e; break;
378/* case 1200000: buf[0] = 0x0f; break; */
379/* case 2400000: buf[0] = 0x10; break; */
380 case 3000000: buf[0] = 0x11; break;
381/* case 6000000: buf[0] = 0x12; break; */
382 case 0:
383 case 1000000:
384 buf[0] = 0x0b; break;
385 default:
194343d9
GKH		 386 dev_err(&port->dev, "spcp825 driver does not support the "
387 "baudrate requested, using default of 9600.\n");
619a6f1d
GKH		 388 }
389
390 /* Set Data Length : 00:5bit, 01:6bit, 10:7bit, 11:8bit */
391 if (cflag & CSIZE) {
392 switch (cflag & CSIZE) {
393 case CS5:
394 buf[1] |= SET_UART_FORMAT_SIZE_5;
395 break;
396 case CS6:
397 buf[1] |= SET_UART_FORMAT_SIZE_6;
398 break;
399 case CS7:
400 buf[1] |= SET_UART_FORMAT_SIZE_7;
401 break;
402 default:
403 case CS8:
404 buf[1] |= SET_UART_FORMAT_SIZE_8;
405 break;
406 }
407 }
408
409 /* Set Stop bit2 : 0:1bit 1:2bit */
410 buf[1] |= (cflag & CSTOPB) ? SET_UART_FORMAT_STOP_2 :
411 SET_UART_FORMAT_STOP_1;
412
413 /* Set Parity bit3-4 01:Odd 11:Even */
414 if (cflag & PARENB) {
415 buf[1] |= (cflag & PARODD) ?
416 SET_UART_FORMAT_PAR_ODD : SET_UART_FORMAT_PAR_EVEN ;
417 } else
418 buf[1] |= SET_UART_FORMAT_PAR_NONE;
419
420 uartdata = buf[0] | buf[1]<<8;
421
422 i = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
423 SET_UART_FORMAT_TYPE, SET_UART_FORMAT,
424 uartdata, 0, NULL, 0, 100);
425 if (i < 0)
194343d9
GKH		 426 dev_err(&port->dev, "Set UART format %#x failed (error = %d)\n",
427 uartdata, i);
fe2baf87 428 dev_dbg(&port->dev, "0x21:0x40:0:0 %d\n", i);
619a6f1d
GKH		 429
430 if (cflag & CRTSCTS) {
431 /* enable hardware flow control */
432 spcp8x5_set_workMode(serial->dev, 0x000a,
433 SET_WORKING_MODE_U2C, priv->type);
434 }
619a6f1d
GKH		 435}
436
437/* open the serial port. do some usb system call. set termios and get the line
fa993ca8 438 * status of the device. */
a509a7e4 439static int spcp8x5_open(struct tty_struct *tty, struct usb_serial_port *port)
619a6f1d
GKH		 440{
441 struct ktermios tmp_termios;
442 struct usb_serial *serial = port->serial;
443 struct spcp8x5_private *priv = usb_get_serial_port_data(port);
444 int ret;
445 unsigned long flags;
446 u8 status = 0x30;
447 /* status 0x30 means DSR and CTS = 1 other CDC RI and delta = 0 */
448
619a6f1d
GKH		 449 usb_clear_halt(serial->dev, port->write_urb->pipe);
450 usb_clear_halt(serial->dev, port->read_urb->pipe);
451
452 ret = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
453 0x09, 0x00,
454 0x01, 0x00, NULL, 0x00, 100);
455 if (ret)
456 return ret;
457
619a6f1d
GKH		 458 spcp8x5_set_ctrlLine(serial->dev, priv->line_control , priv->type);
459
460 /* Setup termios */
95da310e
AC		 461 if (tty)
462 spcp8x5_set_termios(tty, port, &tmp_termios);
619a6f1d
GKH		 463
464 spcp8x5_get_msr(serial->dev, &status, priv->type);
465
466 /* may be we should update uart status here but now we did not do */
467 spin_lock_irqsave(&priv->lock, flags);
468 priv->line_status = status & 0xf0 ;
469 spin_unlock_irqrestore(&priv->lock, flags);
470
335f8514 471 port->port.drain_delay = 256;
fa993ca8
JH		 472
473 return usb_serial_generic_open(tty, port);
619a6f1d
GKH		 474}
475
fa993ca8 476static void spcp8x5_process_read_urb(struct urb *urb)
619a6f1d
GKH		 477{
478 struct usb_serial_port *port = urb->context;
479 struct spcp8x5_private *priv = usb_get_serial_port_data(port);
480 struct tty_struct *tty;
481 unsigned char *data = urb->transfer_buffer;
482 unsigned long flags;
50de36f7 483 u8 status;
619a6f1d
GKH		 484 char tty_flag;
485
619a6f1d
GKH		 486 /* get tty_flag from status */
487 tty_flag = TTY_NORMAL;
488
489 spin_lock_irqsave(&priv->lock, flags);
490 status = priv->line_status;
491 priv->line_status &= ~UART_STATE_TRANSIENT_MASK;
492 spin_unlock_irqrestore(&priv->lock, flags);
493 /* wake up the wait for termios */
494 wake_up_interruptible(&priv->delta_msr_wait);
495
fa993ca8 496 if (!urb->actual_length)
619a6f1d 497 return;
619a6f1d 498
fa993ca8
JH		 499 tty = tty_port_tty_get(&port->port);
500 if (!tty)
619a6f1d 501 return;
619a6f1d 502
fa993ca8
JH		 503 if (status & UART_STATE_TRANSIENT_MASK) {
504 /* break takes precedence over parity, which takes precedence
505 * over framing errors */
506 if (status & UART_BREAK_ERROR)
507 tty_flag = TTY_BREAK;
508 else if (status & UART_PARITY_ERROR)
509 tty_flag = TTY_PARITY;
510 else if (status & UART_FRAME_ERROR)
511 tty_flag = TTY_FRAME;
512 dev_dbg(&port->dev, "tty_flag = %d\n", tty_flag);
619a6f1d 513
fa993ca8
JH		 514 /* overrun is special, not associated with a char */
515 if (status & UART_OVERRUN_ERROR)
516 tty_insert_flip_char(tty, 0, TTY_OVERRUN);
d14fc1a7
LP		 517
518 if (status & UART_DCD)
519 usb_serial_handle_dcd_change(port, tty,
520 priv->line_status & MSR_STATUS_LINE_DCD);
619a6f1d
GKH		 521 }
522
fa993ca8
JH		 523 tty_insert_flip_string_fixed_flag(tty, data, tty_flag,
524 urb->actual_length);
525 tty_flip_buffer_push(tty);
526 tty_kref_put(tty);
619a6f1d
GKH		 527}
528
529static int spcp8x5_wait_modem_info(struct usb_serial_port *port,
530 unsigned int arg)
531{
532 struct spcp8x5_private *priv = usb_get_serial_port_data(port);
533 unsigned long flags;
534 unsigned int prevstatus;
535 unsigned int status;
536 unsigned int changed;
537
538 spin_lock_irqsave(&priv->lock, flags);
539 prevstatus = priv->line_status;
540 spin_unlock_irqrestore(&priv->lock, flags);
541
542 while (1) {
543 /* wake up in bulk read */
544 interruptible_sleep_on(&priv->delta_msr_wait);
545
546 /* see if a signal did it */
547 if (signal_pending(current))
548 return -ERESTARTSYS;
549
550 spin_lock_irqsave(&priv->lock, flags);
551 status = priv->line_status;
552 spin_unlock_irqrestore(&priv->lock, flags);
553
554 changed = prevstatus^status;
555
556 if (((arg & TIOCM_RNG) && (changed & MSR_STATUS_LINE_RI)) ||
557 ((arg & TIOCM_DSR) && (changed & MSR_STATUS_LINE_DSR)) ||
558 ((arg & TIOCM_CD) && (changed & MSR_STATUS_LINE_DCD)) ||
559 ((arg & TIOCM_CTS) && (changed & MSR_STATUS_LINE_CTS)))
560 return 0;
561
562 prevstatus = status;
563 }
564 /* NOTREACHED */
565 return 0;
566}
567
00a0d0d6 568static int spcp8x5_ioctl(struct tty_struct *tty,
619a6f1d
GKH		 569 unsigned int cmd, unsigned long arg)
570{
95da310e 571 struct usb_serial_port *port = tty->driver_data;
fe2baf87
GKH		 572
573 dev_dbg(&port->dev, "%s (%d) cmd = 0x%04x\n", __func__,
574 port->number, cmd);
619a6f1d
GKH		 575
576 switch (cmd) {
577 case TIOCMIWAIT:
fe2baf87
GKH		 578 dev_dbg(&port->dev, "%s (%d) TIOCMIWAIT\n", __func__,
579 port->number);
619a6f1d
GKH		 580 return spcp8x5_wait_modem_info(port, arg);
581
582 default:
fe2baf87
GKH		 583 dev_dbg(&port->dev, "%s not supported = 0x%04x", __func__,
584 cmd);
619a6f1d
GKH		 585 break;
586 }
587
588 return -ENOIOCTLCMD;
589}
590
20b9d177 591static int spcp8x5_tiocmset(struct tty_struct *tty,
619a6f1d
GKH		 592 unsigned int set, unsigned int clear)
593{
95da310e 594 struct usb_serial_port *port = tty->driver_data;
619a6f1d
GKH		 595 struct spcp8x5_private *priv = usb_get_serial_port_data(port);
596 unsigned long flags;
597 u8 control;
598
599 spin_lock_irqsave(&priv->lock, flags);
600 if (set & TIOCM_RTS)
601 priv->line_control |= MCR_RTS;
602 if (set & TIOCM_DTR)
603 priv->line_control |= MCR_DTR;
604 if (clear & TIOCM_RTS)
605 priv->line_control &= ~MCR_RTS;
606 if (clear & TIOCM_DTR)
607 priv->line_control &= ~MCR_DTR;
608 control = priv->line_control;
609 spin_unlock_irqrestore(&priv->lock, flags);
610
611 return spcp8x5_set_ctrlLine(port->serial->dev, control , priv->type);
612}
613
60b33c13 614static int spcp8x5_tiocmget(struct tty_struct *tty)
619a6f1d 615{
95da310e 616 struct usb_serial_port *port = tty->driver_data;
619a6f1d
GKH		 617 struct spcp8x5_private *priv = usb_get_serial_port_data(port);
618 unsigned long flags;
619 unsigned int mcr;
620 unsigned int status;
621 unsigned int result;
622
623 spin_lock_irqsave(&priv->lock, flags);
624 mcr = priv->line_control;
625 status = priv->line_status;
626 spin_unlock_irqrestore(&priv->lock, flags);
627
628 result = ((mcr & MCR_DTR) ? TIOCM_DTR : 0)
629 | ((mcr & MCR_RTS) ? TIOCM_RTS : 0)
630 | ((status & MSR_STATUS_LINE_CTS) ? TIOCM_CTS : 0)
631 | ((status & MSR_STATUS_LINE_DSR) ? TIOCM_DSR : 0)
632 | ((status & MSR_STATUS_LINE_RI) ? TIOCM_RI : 0)
633 | ((status & MSR_STATUS_LINE_DCD) ? TIOCM_CD : 0);
634
635 return result;
636}
637
619a6f1d
GKH		 638/* All of the device info needed for the spcp8x5 SIO serial converter */
639static struct usb_serial_driver spcp8x5_device = {
640 .driver = {
641 .owner = THIS_MODULE,
642 .name = "SPCP8x5",
643 },
644 .id_table = id_table,
619a6f1d
GKH		 645 .num_ports = 1,
646 .open = spcp8x5_open,
335f8514
AC		 647 .dtr_rts = spcp8x5_dtr_rts,
648 .carrier_raised = spcp8x5_carrier_raised,
619a6f1d 649 .set_termios = spcp8x5_set_termios,
fe1ae7fd 650 .init_termios = spcp8x5_init_termios,
619a6f1d
GKH		 651 .ioctl = spcp8x5_ioctl,
652 .tiocmget = spcp8x5_tiocmget,
653 .tiocmset = spcp8x5_tiocmset,
619a6f1d 654 .attach = spcp8x5_startup,
f9c99bb8 655 .release = spcp8x5_release,
fa993ca8 656 .process_read_urb = spcp8x5_process_read_urb,
619a6f1d
GKH		 657};
658
d860322f
AS		 659static struct usb_serial_driver * const serial_drivers[] = {
660 &spcp8x5_device, NULL
661};
662
68e24113 663module_usb_serial_driver(serial_drivers, id_table);
619a6f1d
GKH		 664
665MODULE_DESCRIPTION(DRIVER_DESC);
666MODULE_VERSION(DRIVER_VERSION);
667MODULE_LICENSE("GPL");
668
669module_param(debug, bool, S_IRUGO | S_IWUSR);
670MODULE_PARM_DESC(debug, "Debug enabled or not");
Linux 6.x block layer and io_uring tree(s)