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1// SPDX-License-Identifier: GPL-2.0+
2/*
3 * spcp8x5 USB to serial adaptor driver
4 *
5 * Copyright (C) 2010-2013 Johan Hovold (jhovold@gmail.com)
6 * Copyright (C) 2006 Linxb (xubin.lin@worldplus.com.cn)
7 * Copyright (C) 2006 S1 Corp.
8 *
9 * Original driver for 2.6.10 pl2303 driver by
10 * Greg Kroah-Hartman (greg@kroah.com)
11 * Changes for 2.6.20 by Harald Klein <hari@vt100.at>
12 */
13#include <linux/kernel.h>
14#include <linux/errno.h>
15#include <linux/slab.h>
16#include <linux/tty.h>
17#include <linux/tty_driver.h>
18#include <linux/tty_flip.h>
19#include <linux/module.h>
20#include <linux/spinlock.h>
21#include <linux/usb.h>
22#include <linux/usb/serial.h>
23
24#define DRIVER_DESC "SPCP8x5 USB to serial adaptor driver"
25
26#define SPCP825_QUIRK_NO_UART_STATUS 0x01
27#define SPCP825_QUIRK_NO_WORK_MODE 0x02
28
29#define SPCP8x5_007_VID 0x04FC
30#define SPCP8x5_007_PID 0x0201
31#define SPCP8x5_008_VID 0x04fc
32#define SPCP8x5_008_PID 0x0235
33#define SPCP8x5_PHILIPS_VID 0x0471
34#define SPCP8x5_PHILIPS_PID 0x081e
35#define SPCP8x5_INTERMATIC_VID 0x04FC
36#define SPCP8x5_INTERMATIC_PID 0x0204
37#define SPCP8x5_835_VID 0x04fc
38#define SPCP8x5_835_PID 0x0231
39
40static const struct usb_device_id id_table[] = {
41 { USB_DEVICE(SPCP8x5_PHILIPS_VID , SPCP8x5_PHILIPS_PID)},
42 { USB_DEVICE(SPCP8x5_INTERMATIC_VID, SPCP8x5_INTERMATIC_PID)},
43 { USB_DEVICE(SPCP8x5_835_VID, SPCP8x5_835_PID)},
44 { USB_DEVICE(SPCP8x5_008_VID, SPCP8x5_008_PID)},
45 { USB_DEVICE(SPCP8x5_007_VID, SPCP8x5_007_PID),
46 .driver_info = SPCP825_QUIRK_NO_UART_STATUS |
47 SPCP825_QUIRK_NO_WORK_MODE },
48 { } /* Terminating entry */
49};
50MODULE_DEVICE_TABLE(usb, id_table);
51
52struct spcp8x5_usb_ctrl_arg {
53 u8 type;
54 u8 cmd;
55 u8 cmd_type;
56 u16 value;
57 u16 index;
58 u16 length;
59};
60
61
62/* spcp8x5 spec register define */
63#define MCR_CONTROL_LINE_RTS 0x02
64#define MCR_CONTROL_LINE_DTR 0x01
65#define MCR_DTR 0x01
66#define MCR_RTS 0x02
67
68#define MSR_STATUS_LINE_DCD 0x80
69#define MSR_STATUS_LINE_RI 0x40
70#define MSR_STATUS_LINE_DSR 0x20
71#define MSR_STATUS_LINE_CTS 0x10
72
73/* verdor command here , we should define myself */
74#define SET_DEFAULT 0x40
75#define SET_DEFAULT_TYPE 0x20
76
77#define SET_UART_FORMAT 0x40
78#define SET_UART_FORMAT_TYPE 0x21
79#define SET_UART_FORMAT_SIZE_5 0x00
80#define SET_UART_FORMAT_SIZE_6 0x01
81#define SET_UART_FORMAT_SIZE_7 0x02
82#define SET_UART_FORMAT_SIZE_8 0x03
83#define SET_UART_FORMAT_STOP_1 0x00
84#define SET_UART_FORMAT_STOP_2 0x04
85#define SET_UART_FORMAT_PAR_NONE 0x00
86#define SET_UART_FORMAT_PAR_ODD 0x10
87#define SET_UART_FORMAT_PAR_EVEN 0x30
88#define SET_UART_FORMAT_PAR_MASK 0xD0
89#define SET_UART_FORMAT_PAR_SPACE 0x90
90
91#define GET_UART_STATUS_TYPE 0xc0
92#define GET_UART_STATUS 0x22
93#define GET_UART_STATUS_MSR 0x06
94
95#define SET_UART_STATUS 0x40
96#define SET_UART_STATUS_TYPE 0x23
97#define SET_UART_STATUS_MCR 0x0004
98#define SET_UART_STATUS_MCR_DTR 0x01
99#define SET_UART_STATUS_MCR_RTS 0x02
100#define SET_UART_STATUS_MCR_LOOP 0x10
101
102#define SET_WORKING_MODE 0x40
103#define SET_WORKING_MODE_TYPE 0x24
104#define SET_WORKING_MODE_U2C 0x00
105#define SET_WORKING_MODE_RS485 0x01
106#define SET_WORKING_MODE_PDMA 0x02
107#define SET_WORKING_MODE_SPP 0x03
108
109#define SET_FLOWCTL_CHAR 0x40
110#define SET_FLOWCTL_CHAR_TYPE 0x25
111
112#define GET_VERSION 0xc0
113#define GET_VERSION_TYPE 0x26
114
115#define SET_REGISTER 0x40
116#define SET_REGISTER_TYPE 0x27
117
118#define GET_REGISTER 0xc0
119#define GET_REGISTER_TYPE 0x28
120
121#define SET_RAM 0x40
122#define SET_RAM_TYPE 0x31
123
124#define GET_RAM 0xc0
125#define GET_RAM_TYPE 0x32
126
127/* how come ??? */
128#define UART_STATE 0x08
129#define UART_STATE_TRANSIENT_MASK 0x75
130#define UART_DCD 0x01
131#define UART_DSR 0x02
132#define UART_BREAK_ERROR 0x04
133#define UART_RING 0x08
134#define UART_FRAME_ERROR 0x10
135#define UART_PARITY_ERROR 0x20
136#define UART_OVERRUN_ERROR 0x40
137#define UART_CTS 0x80
138
139struct spcp8x5_private {
140 unsigned quirks;
141 spinlock_t lock;
142 u8 line_control;
143};
144
145static int spcp8x5_probe(struct usb_serial *serial,
146 const struct usb_device_id *id)
147{
148 usb_set_serial_data(serial, (void *)id);
149
150 return 0;
151}
152
153static int spcp8x5_port_probe(struct usb_serial_port *port)
154{
155 const struct usb_device_id *id = usb_get_serial_data(port->serial);
156 struct spcp8x5_private *priv;
157
158 priv = kzalloc(sizeof(*priv), GFP_KERNEL);
159 if (!priv)
160 return -ENOMEM;
161
162 spin_lock_init(&priv->lock);
163 priv->quirks = id->driver_info;
164
165 usb_set_serial_port_data(port, priv);
166
167 port->port.drain_delay = 256;
168
169 return 0;
170}
171
172static void spcp8x5_port_remove(struct usb_serial_port *port)
173{
174 struct spcp8x5_private *priv;
175
176 priv = usb_get_serial_port_data(port);
177 kfree(priv);
178}
179
180static int spcp8x5_set_ctrl_line(struct usb_serial_port *port, u8 mcr)
181{
182 struct spcp8x5_private *priv = usb_get_serial_port_data(port);
183 struct usb_device *dev = port->serial->dev;
184 int retval;
185
186 if (priv->quirks & SPCP825_QUIRK_NO_UART_STATUS)
187 return -EPERM;
188
189 retval = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
190 SET_UART_STATUS_TYPE, SET_UART_STATUS,
191 mcr, 0x04, NULL, 0, 100);
192 if (retval != 0) {
193 dev_err(&port->dev, "failed to set control lines: %d\n",
194 retval);
195 }
196 return retval;
197}
198
199static int spcp8x5_get_msr(struct usb_serial_port *port, u8 *status)
200{
201 struct spcp8x5_private *priv = usb_get_serial_port_data(port);
202 struct usb_device *dev = port->serial->dev;
203 u8 *buf;
204 int ret;
205
206 if (priv->quirks & SPCP825_QUIRK_NO_UART_STATUS)
207 return -EPERM;
208
209 buf = kzalloc(1, GFP_KERNEL);
210 if (!buf)
211 return -ENOMEM;
212
213 ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
214 GET_UART_STATUS, GET_UART_STATUS_TYPE,
215 0, GET_UART_STATUS_MSR, buf, 1, 100);
216 if (ret < 1) {
217 dev_err(&port->dev, "failed to get modem status: %d\n", ret);
218 if (ret >= 0)
219 ret = -EIO;
220 goto out;
221 }
222
223 dev_dbg(&port->dev, "0xc0:0x22:0:6 %d - 0x02%x\n", ret, *buf);
224 *status = *buf;
225 ret = 0;
226out:
227 kfree(buf);
228
229 return ret;
230}
231
232static void spcp8x5_set_work_mode(struct usb_serial_port *port, u16 value,
233 u16 index)
234{
235 struct spcp8x5_private *priv = usb_get_serial_port_data(port);
236 struct usb_device *dev = port->serial->dev;
237 int ret;
238
239 if (priv->quirks & SPCP825_QUIRK_NO_WORK_MODE)
240 return;
241
242 ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
243 SET_WORKING_MODE_TYPE, SET_WORKING_MODE,
244 value, index, NULL, 0, 100);
245 dev_dbg(&port->dev, "value = %#x , index = %#x\n", value, index);
246 if (ret < 0)
247 dev_err(&port->dev, "failed to set work mode: %d\n", ret);
248}
249
250static int spcp8x5_carrier_raised(struct usb_serial_port *port)
251{
252 u8 msr;
253 int ret;
254
255 ret = spcp8x5_get_msr(port, &msr);
256 if (ret || msr & MSR_STATUS_LINE_DCD)
257 return 1;
258
259 return 0;
260}
261
262static void spcp8x5_dtr_rts(struct usb_serial_port *port, int on)
263{
264 struct spcp8x5_private *priv = usb_get_serial_port_data(port);
265 unsigned long flags;
266 u8 control;
267
268 spin_lock_irqsave(&priv->lock, flags);
269 if (on)
270 priv->line_control = MCR_CONTROL_LINE_DTR
271 | MCR_CONTROL_LINE_RTS;
272 else
273 priv->line_control &= ~ (MCR_CONTROL_LINE_DTR
274 | MCR_CONTROL_LINE_RTS);
275 control = priv->line_control;
276 spin_unlock_irqrestore(&priv->lock, flags);
277 spcp8x5_set_ctrl_line(port, control);
278}
279
280static void spcp8x5_init_termios(struct tty_struct *tty)
281{
282 tty_encode_baud_rate(tty, 115200, 115200);
283}
284
285static void spcp8x5_set_termios(struct tty_struct *tty,
286 struct usb_serial_port *port,
287 const struct ktermios *old_termios)
288{
289 struct usb_serial *serial = port->serial;
290 struct spcp8x5_private *priv = usb_get_serial_port_data(port);
291 unsigned long flags;
292 unsigned int cflag = tty->termios.c_cflag;
293 unsigned short uartdata;
294 unsigned char buf[2] = {0, 0};
295 int baud;
296 int i;
297 u8 control;
298
299 /* check that they really want us to change something */
300 if (old_termios && !tty_termios_hw_change(&tty->termios, old_termios))
301 return;
302
303 /* set DTR/RTS active */
304 spin_lock_irqsave(&priv->lock, flags);
305 control = priv->line_control;
306 if (old_termios && (old_termios->c_cflag & CBAUD) == B0) {
307 priv->line_control |= MCR_DTR;
308 if (!(old_termios->c_cflag & CRTSCTS))
309 priv->line_control |= MCR_RTS;
310 }
311 if (control != priv->line_control) {
312 control = priv->line_control;
313 spin_unlock_irqrestore(&priv->lock, flags);
314 spcp8x5_set_ctrl_line(port, control);
315 } else {
316 spin_unlock_irqrestore(&priv->lock, flags);
317 }
318
319 /* Set Baud Rate */
320 baud = tty_get_baud_rate(tty);
321 switch (baud) {
322 case 300: buf[0] = 0x00; break;
323 case 600: buf[0] = 0x01; break;
324 case 1200: buf[0] = 0x02; break;
325 case 2400: buf[0] = 0x03; break;
326 case 4800: buf[0] = 0x04; break;
327 case 9600: buf[0] = 0x05; break;
328 case 19200: buf[0] = 0x07; break;
329 case 38400: buf[0] = 0x09; break;
330 case 57600: buf[0] = 0x0a; break;
331 case 115200: buf[0] = 0x0b; break;
332 case 230400: buf[0] = 0x0c; break;
333 case 460800: buf[0] = 0x0d; break;
334 case 921600: buf[0] = 0x0e; break;
335/* case 1200000: buf[0] = 0x0f; break; */
336/* case 2400000: buf[0] = 0x10; break; */
337 case 3000000: buf[0] = 0x11; break;
338/* case 6000000: buf[0] = 0x12; break; */
339 case 0:
340 case 1000000:
341 buf[0] = 0x0b; break;
342 default:
343 dev_err(&port->dev, "unsupported baudrate, using 9600\n");
344 }
345
346 /* Set Data Length : 00:5bit, 01:6bit, 10:7bit, 11:8bit */
347 switch (cflag & CSIZE) {
348 case CS5:
349 buf[1] |= SET_UART_FORMAT_SIZE_5;
350 break;
351 case CS6:
352 buf[1] |= SET_UART_FORMAT_SIZE_6;
353 break;
354 case CS7:
355 buf[1] |= SET_UART_FORMAT_SIZE_7;
356 break;
357 default:
358 case CS8:
359 buf[1] |= SET_UART_FORMAT_SIZE_8;
360 break;
361 }
362
363 /* Set Stop bit2 : 0:1bit 1:2bit */
364 buf[1] |= (cflag & CSTOPB) ? SET_UART_FORMAT_STOP_2 :
365 SET_UART_FORMAT_STOP_1;
366
367 /* Set Parity bit3-4 01:Odd 11:Even */
368 if (cflag & PARENB) {
369 buf[1] |= (cflag & PARODD) ?
370 SET_UART_FORMAT_PAR_ODD : SET_UART_FORMAT_PAR_EVEN ;
371 } else {
372 buf[1] |= SET_UART_FORMAT_PAR_NONE;
373 }
374 uartdata = buf[0] | buf[1]<<8;
375
376 i = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
377 SET_UART_FORMAT_TYPE, SET_UART_FORMAT,
378 uartdata, 0, NULL, 0, 100);
379 if (i < 0)
380 dev_err(&port->dev, "Set UART format %#x failed (error = %d)\n",
381 uartdata, i);
382 dev_dbg(&port->dev, "0x21:0x40:0:0 %d\n", i);
383
384 if (cflag & CRTSCTS) {
385 /* enable hardware flow control */
386 spcp8x5_set_work_mode(port, 0x000a, SET_WORKING_MODE_U2C);
387 }
388}
389
390static int spcp8x5_open(struct tty_struct *tty, struct usb_serial_port *port)
391{
392 struct usb_serial *serial = port->serial;
393 struct spcp8x5_private *priv = usb_get_serial_port_data(port);
394 int ret;
395
396 usb_clear_halt(serial->dev, port->write_urb->pipe);
397 usb_clear_halt(serial->dev, port->read_urb->pipe);
398
399 ret = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
400 0x09, 0x00,
401 0x01, 0x00, NULL, 0x00, 100);
402 if (ret)
403 return ret;
404
405 spcp8x5_set_ctrl_line(port, priv->line_control);
406
407 if (tty)
408 spcp8x5_set_termios(tty, port, NULL);
409
410 return usb_serial_generic_open(tty, port);
411}
412
413static int spcp8x5_tiocmset(struct tty_struct *tty,
414 unsigned int set, unsigned int clear)
415{
416 struct usb_serial_port *port = tty->driver_data;
417 struct spcp8x5_private *priv = usb_get_serial_port_data(port);
418 unsigned long flags;
419 u8 control;
420
421 spin_lock_irqsave(&priv->lock, flags);
422 if (set & TIOCM_RTS)
423 priv->line_control |= MCR_RTS;
424 if (set & TIOCM_DTR)
425 priv->line_control |= MCR_DTR;
426 if (clear & TIOCM_RTS)
427 priv->line_control &= ~MCR_RTS;
428 if (clear & TIOCM_DTR)
429 priv->line_control &= ~MCR_DTR;
430 control = priv->line_control;
431 spin_unlock_irqrestore(&priv->lock, flags);
432
433 return spcp8x5_set_ctrl_line(port, control);
434}
435
436static int spcp8x5_tiocmget(struct tty_struct *tty)
437{
438 struct usb_serial_port *port = tty->driver_data;
439 struct spcp8x5_private *priv = usb_get_serial_port_data(port);
440 unsigned long flags;
441 unsigned int mcr;
442 u8 status;
443 unsigned int result;
444
445 result = spcp8x5_get_msr(port, &status);
446 if (result)
447 return result;
448
449 spin_lock_irqsave(&priv->lock, flags);
450 mcr = priv->line_control;
451 spin_unlock_irqrestore(&priv->lock, flags);
452
453 result = ((mcr & MCR_DTR) ? TIOCM_DTR : 0)
454 | ((mcr & MCR_RTS) ? TIOCM_RTS : 0)
455 | ((status & MSR_STATUS_LINE_CTS) ? TIOCM_CTS : 0)
456 | ((status & MSR_STATUS_LINE_DSR) ? TIOCM_DSR : 0)
457 | ((status & MSR_STATUS_LINE_RI) ? TIOCM_RI : 0)
458 | ((status & MSR_STATUS_LINE_DCD) ? TIOCM_CD : 0);
459
460 return result;
461}
462
463static struct usb_serial_driver spcp8x5_device = {
464 .driver = {
465 .owner = THIS_MODULE,
466 .name = "SPCP8x5",
467 },
468 .id_table = id_table,
469 .num_ports = 1,
470 .num_bulk_in = 1,
471 .num_bulk_out = 1,
472 .open = spcp8x5_open,
473 .dtr_rts = spcp8x5_dtr_rts,
474 .carrier_raised = spcp8x5_carrier_raised,
475 .set_termios = spcp8x5_set_termios,
476 .init_termios = spcp8x5_init_termios,
477 .tiocmget = spcp8x5_tiocmget,
478 .tiocmset = spcp8x5_tiocmset,
479 .probe = spcp8x5_probe,
480 .port_probe = spcp8x5_port_probe,
481 .port_remove = spcp8x5_port_remove,
482};
483
484static struct usb_serial_driver * const serial_drivers[] = {
485 &spcp8x5_device, NULL
486};
487
488module_usb_serial_driver(serial_drivers, id_table);
489
490MODULE_DESCRIPTION(DRIVER_DESC);
491MODULE_LICENSE("GPL");
1/*
2 * spcp8x5 USB to serial adaptor driver
3 *
4 * Copyright (C) 2010-2013 Johan Hovold (jhovold@gmail.com)
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#include <linux/kernel.h>
18#include <linux/errno.h>
19#include <linux/slab.h>
20#include <linux/tty.h>
21#include <linux/tty_driver.h>
22#include <linux/tty_flip.h>
23#include <linux/module.h>
24#include <linux/spinlock.h>
25#include <linux/usb.h>
26#include <linux/usb/serial.h>
27
28#define DRIVER_DESC "SPCP8x5 USB to serial adaptor driver"
29
30#define SPCP825_QUIRK_NO_UART_STATUS 0x01
31#define SPCP825_QUIRK_NO_WORK_MODE 0x02
32
33#define SPCP8x5_007_VID 0x04FC
34#define SPCP8x5_007_PID 0x0201
35#define SPCP8x5_008_VID 0x04fc
36#define SPCP8x5_008_PID 0x0235
37#define SPCP8x5_PHILIPS_VID 0x0471
38#define SPCP8x5_PHILIPS_PID 0x081e
39#define SPCP8x5_INTERMATIC_VID 0x04FC
40#define SPCP8x5_INTERMATIC_PID 0x0204
41#define SPCP8x5_835_VID 0x04fc
42#define SPCP8x5_835_PID 0x0231
43
44static const struct usb_device_id id_table[] = {
45 { USB_DEVICE(SPCP8x5_PHILIPS_VID , SPCP8x5_PHILIPS_PID)},
46 { USB_DEVICE(SPCP8x5_INTERMATIC_VID, SPCP8x5_INTERMATIC_PID)},
47 { USB_DEVICE(SPCP8x5_835_VID, SPCP8x5_835_PID)},
48 { USB_DEVICE(SPCP8x5_008_VID, SPCP8x5_008_PID)},
49 { USB_DEVICE(SPCP8x5_007_VID, SPCP8x5_007_PID),
50 .driver_info = SPCP825_QUIRK_NO_UART_STATUS |
51 SPCP825_QUIRK_NO_WORK_MODE },
52 { } /* Terminating entry */
53};
54MODULE_DEVICE_TABLE(usb, id_table);
55
56struct spcp8x5_usb_ctrl_arg {
57 u8 type;
58 u8 cmd;
59 u8 cmd_type;
60 u16 value;
61 u16 index;
62 u16 length;
63};
64
65
66/* spcp8x5 spec register define */
67#define MCR_CONTROL_LINE_RTS 0x02
68#define MCR_CONTROL_LINE_DTR 0x01
69#define MCR_DTR 0x01
70#define MCR_RTS 0x02
71
72#define MSR_STATUS_LINE_DCD 0x80
73#define MSR_STATUS_LINE_RI 0x40
74#define MSR_STATUS_LINE_DSR 0x20
75#define MSR_STATUS_LINE_CTS 0x10
76
77/* verdor command here , we should define myself */
78#define SET_DEFAULT 0x40
79#define SET_DEFAULT_TYPE 0x20
80
81#define SET_UART_FORMAT 0x40
82#define SET_UART_FORMAT_TYPE 0x21
83#define SET_UART_FORMAT_SIZE_5 0x00
84#define SET_UART_FORMAT_SIZE_6 0x01
85#define SET_UART_FORMAT_SIZE_7 0x02
86#define SET_UART_FORMAT_SIZE_8 0x03
87#define SET_UART_FORMAT_STOP_1 0x00
88#define SET_UART_FORMAT_STOP_2 0x04
89#define SET_UART_FORMAT_PAR_NONE 0x00
90#define SET_UART_FORMAT_PAR_ODD 0x10
91#define SET_UART_FORMAT_PAR_EVEN 0x30
92#define SET_UART_FORMAT_PAR_MASK 0xD0
93#define SET_UART_FORMAT_PAR_SPACE 0x90
94
95#define GET_UART_STATUS_TYPE 0xc0
96#define GET_UART_STATUS 0x22
97#define GET_UART_STATUS_MSR 0x06
98
99#define SET_UART_STATUS 0x40
100#define SET_UART_STATUS_TYPE 0x23
101#define SET_UART_STATUS_MCR 0x0004
102#define SET_UART_STATUS_MCR_DTR 0x01
103#define SET_UART_STATUS_MCR_RTS 0x02
104#define SET_UART_STATUS_MCR_LOOP 0x10
105
106#define SET_WORKING_MODE 0x40
107#define SET_WORKING_MODE_TYPE 0x24
108#define SET_WORKING_MODE_U2C 0x00
109#define SET_WORKING_MODE_RS485 0x01
110#define SET_WORKING_MODE_PDMA 0x02
111#define SET_WORKING_MODE_SPP 0x03
112
113#define SET_FLOWCTL_CHAR 0x40
114#define SET_FLOWCTL_CHAR_TYPE 0x25
115
116#define GET_VERSION 0xc0
117#define GET_VERSION_TYPE 0x26
118
119#define SET_REGISTER 0x40
120#define SET_REGISTER_TYPE 0x27
121
122#define GET_REGISTER 0xc0
123#define GET_REGISTER_TYPE 0x28
124
125#define SET_RAM 0x40
126#define SET_RAM_TYPE 0x31
127
128#define GET_RAM 0xc0
129#define GET_RAM_TYPE 0x32
130
131/* how come ??? */
132#define UART_STATE 0x08
133#define UART_STATE_TRANSIENT_MASK 0x75
134#define UART_DCD 0x01
135#define UART_DSR 0x02
136#define UART_BREAK_ERROR 0x04
137#define UART_RING 0x08
138#define UART_FRAME_ERROR 0x10
139#define UART_PARITY_ERROR 0x20
140#define UART_OVERRUN_ERROR 0x40
141#define UART_CTS 0x80
142
143struct spcp8x5_private {
144 unsigned quirks;
145 spinlock_t lock;
146 u8 line_control;
147};
148
149static int spcp8x5_probe(struct usb_serial *serial,
150 const struct usb_device_id *id)
151{
152 usb_set_serial_data(serial, (void *)id);
153
154 return 0;
155}
156
157static int spcp8x5_attach(struct usb_serial *serial)
158{
159 unsigned char num_ports = serial->num_ports;
160
161 if (serial->num_bulk_in < num_ports ||
162 serial->num_bulk_out < num_ports) {
163 dev_err(&serial->interface->dev, "missing endpoints\n");
164 return -ENODEV;
165 }
166
167 return 0;
168}
169
170static int spcp8x5_port_probe(struct usb_serial_port *port)
171{
172 const struct usb_device_id *id = usb_get_serial_data(port->serial);
173 struct spcp8x5_private *priv;
174
175 priv = kzalloc(sizeof(*priv), GFP_KERNEL);
176 if (!priv)
177 return -ENOMEM;
178
179 spin_lock_init(&priv->lock);
180 priv->quirks = id->driver_info;
181
182 usb_set_serial_port_data(port, priv);
183
184 port->port.drain_delay = 256;
185
186 return 0;
187}
188
189static int spcp8x5_port_remove(struct usb_serial_port *port)
190{
191 struct spcp8x5_private *priv;
192
193 priv = usb_get_serial_port_data(port);
194 kfree(priv);
195
196 return 0;
197}
198
199static int spcp8x5_set_ctrl_line(struct usb_serial_port *port, u8 mcr)
200{
201 struct spcp8x5_private *priv = usb_get_serial_port_data(port);
202 struct usb_device *dev = port->serial->dev;
203 int retval;
204
205 if (priv->quirks & SPCP825_QUIRK_NO_UART_STATUS)
206 return -EPERM;
207
208 retval = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
209 SET_UART_STATUS_TYPE, SET_UART_STATUS,
210 mcr, 0x04, NULL, 0, 100);
211 if (retval != 0) {
212 dev_err(&port->dev, "failed to set control lines: %d\n",
213 retval);
214 }
215 return retval;
216}
217
218static int spcp8x5_get_msr(struct usb_serial_port *port, u8 *status)
219{
220 struct spcp8x5_private *priv = usb_get_serial_port_data(port);
221 struct usb_device *dev = port->serial->dev;
222 u8 *buf;
223 int ret;
224
225 if (priv->quirks & SPCP825_QUIRK_NO_UART_STATUS)
226 return -EPERM;
227
228 buf = kzalloc(1, GFP_KERNEL);
229 if (!buf)
230 return -ENOMEM;
231
232 ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
233 GET_UART_STATUS, GET_UART_STATUS_TYPE,
234 0, GET_UART_STATUS_MSR, buf, 1, 100);
235 if (ret < 1) {
236 dev_err(&port->dev, "failed to get modem status: %d\n", ret);
237 if (ret >= 0)
238 ret = -EIO;
239 goto out;
240 }
241
242 dev_dbg(&port->dev, "0xc0:0x22:0:6 %d - 0x02%x\n", ret, *buf);
243 *status = *buf;
244 ret = 0;
245out:
246 kfree(buf);
247
248 return ret;
249}
250
251static void spcp8x5_set_work_mode(struct usb_serial_port *port, u16 value,
252 u16 index)
253{
254 struct spcp8x5_private *priv = usb_get_serial_port_data(port);
255 struct usb_device *dev = port->serial->dev;
256 int ret;
257
258 if (priv->quirks & SPCP825_QUIRK_NO_WORK_MODE)
259 return;
260
261 ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
262 SET_WORKING_MODE_TYPE, SET_WORKING_MODE,
263 value, index, NULL, 0, 100);
264 dev_dbg(&port->dev, "value = %#x , index = %#x\n", value, index);
265 if (ret < 0)
266 dev_err(&port->dev, "failed to set work mode: %d\n", ret);
267}
268
269static int spcp8x5_carrier_raised(struct usb_serial_port *port)
270{
271 u8 msr;
272 int ret;
273
274 ret = spcp8x5_get_msr(port, &msr);
275 if (ret || msr & MSR_STATUS_LINE_DCD)
276 return 1;
277
278 return 0;
279}
280
281static void spcp8x5_dtr_rts(struct usb_serial_port *port, int on)
282{
283 struct spcp8x5_private *priv = usb_get_serial_port_data(port);
284 unsigned long flags;
285 u8 control;
286
287 spin_lock_irqsave(&priv->lock, flags);
288 if (on)
289 priv->line_control = MCR_CONTROL_LINE_DTR
290 | MCR_CONTROL_LINE_RTS;
291 else
292 priv->line_control &= ~ (MCR_CONTROL_LINE_DTR
293 | MCR_CONTROL_LINE_RTS);
294 control = priv->line_control;
295 spin_unlock_irqrestore(&priv->lock, flags);
296 spcp8x5_set_ctrl_line(port, control);
297}
298
299static void spcp8x5_init_termios(struct tty_struct *tty)
300{
301 tty->termios = tty_std_termios;
302 tty->termios.c_cflag = B115200 | CS8 | CREAD | HUPCL | CLOCAL;
303 tty->termios.c_ispeed = 115200;
304 tty->termios.c_ospeed = 115200;
305}
306
307static void spcp8x5_set_termios(struct tty_struct *tty,
308 struct usb_serial_port *port, struct ktermios *old_termios)
309{
310 struct usb_serial *serial = port->serial;
311 struct spcp8x5_private *priv = usb_get_serial_port_data(port);
312 unsigned long flags;
313 unsigned int cflag = tty->termios.c_cflag;
314 unsigned short uartdata;
315 unsigned char buf[2] = {0, 0};
316 int baud;
317 int i;
318 u8 control;
319
320 /* check that they really want us to change something */
321 if (old_termios && !tty_termios_hw_change(&tty->termios, old_termios))
322 return;
323
324 /* set DTR/RTS active */
325 spin_lock_irqsave(&priv->lock, flags);
326 control = priv->line_control;
327 if (old_termios && (old_termios->c_cflag & CBAUD) == B0) {
328 priv->line_control |= MCR_DTR;
329 if (!(old_termios->c_cflag & CRTSCTS))
330 priv->line_control |= MCR_RTS;
331 }
332 if (control != priv->line_control) {
333 control = priv->line_control;
334 spin_unlock_irqrestore(&priv->lock, flags);
335 spcp8x5_set_ctrl_line(port, control);
336 } else {
337 spin_unlock_irqrestore(&priv->lock, flags);
338 }
339
340 /* Set Baud Rate */
341 baud = tty_get_baud_rate(tty);
342 switch (baud) {
343 case 300: buf[0] = 0x00; break;
344 case 600: buf[0] = 0x01; break;
345 case 1200: buf[0] = 0x02; break;
346 case 2400: buf[0] = 0x03; break;
347 case 4800: buf[0] = 0x04; break;
348 case 9600: buf[0] = 0x05; break;
349 case 19200: buf[0] = 0x07; break;
350 case 38400: buf[0] = 0x09; break;
351 case 57600: buf[0] = 0x0a; break;
352 case 115200: buf[0] = 0x0b; break;
353 case 230400: buf[0] = 0x0c; break;
354 case 460800: buf[0] = 0x0d; break;
355 case 921600: buf[0] = 0x0e; break;
356/* case 1200000: buf[0] = 0x0f; break; */
357/* case 2400000: buf[0] = 0x10; break; */
358 case 3000000: buf[0] = 0x11; break;
359/* case 6000000: buf[0] = 0x12; break; */
360 case 0:
361 case 1000000:
362 buf[0] = 0x0b; break;
363 default:
364 dev_err(&port->dev, "unsupported baudrate, using 9600\n");
365 }
366
367 /* Set Data Length : 00:5bit, 01:6bit, 10:7bit, 11:8bit */
368 switch (cflag & CSIZE) {
369 case CS5:
370 buf[1] |= SET_UART_FORMAT_SIZE_5;
371 break;
372 case CS6:
373 buf[1] |= SET_UART_FORMAT_SIZE_6;
374 break;
375 case CS7:
376 buf[1] |= SET_UART_FORMAT_SIZE_7;
377 break;
378 default:
379 case CS8:
380 buf[1] |= SET_UART_FORMAT_SIZE_8;
381 break;
382 }
383
384 /* Set Stop bit2 : 0:1bit 1:2bit */
385 buf[1] |= (cflag & CSTOPB) ? SET_UART_FORMAT_STOP_2 :
386 SET_UART_FORMAT_STOP_1;
387
388 /* Set Parity bit3-4 01:Odd 11:Even */
389 if (cflag & PARENB) {
390 buf[1] |= (cflag & PARODD) ?
391 SET_UART_FORMAT_PAR_ODD : SET_UART_FORMAT_PAR_EVEN ;
392 } else {
393 buf[1] |= SET_UART_FORMAT_PAR_NONE;
394 }
395 uartdata = buf[0] | buf[1]<<8;
396
397 i = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
398 SET_UART_FORMAT_TYPE, SET_UART_FORMAT,
399 uartdata, 0, NULL, 0, 100);
400 if (i < 0)
401 dev_err(&port->dev, "Set UART format %#x failed (error = %d)\n",
402 uartdata, i);
403 dev_dbg(&port->dev, "0x21:0x40:0:0 %d\n", i);
404
405 if (cflag & CRTSCTS) {
406 /* enable hardware flow control */
407 spcp8x5_set_work_mode(port, 0x000a, SET_WORKING_MODE_U2C);
408 }
409}
410
411static int spcp8x5_open(struct tty_struct *tty, struct usb_serial_port *port)
412{
413 struct usb_serial *serial = port->serial;
414 struct spcp8x5_private *priv = usb_get_serial_port_data(port);
415 int ret;
416
417 usb_clear_halt(serial->dev, port->write_urb->pipe);
418 usb_clear_halt(serial->dev, port->read_urb->pipe);
419
420 ret = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
421 0x09, 0x00,
422 0x01, 0x00, NULL, 0x00, 100);
423 if (ret)
424 return ret;
425
426 spcp8x5_set_ctrl_line(port, priv->line_control);
427
428 if (tty)
429 spcp8x5_set_termios(tty, port, NULL);
430
431 return usb_serial_generic_open(tty, port);
432}
433
434static int spcp8x5_tiocmset(struct tty_struct *tty,
435 unsigned int set, unsigned int clear)
436{
437 struct usb_serial_port *port = tty->driver_data;
438 struct spcp8x5_private *priv = usb_get_serial_port_data(port);
439 unsigned long flags;
440 u8 control;
441
442 spin_lock_irqsave(&priv->lock, flags);
443 if (set & TIOCM_RTS)
444 priv->line_control |= MCR_RTS;
445 if (set & TIOCM_DTR)
446 priv->line_control |= MCR_DTR;
447 if (clear & TIOCM_RTS)
448 priv->line_control &= ~MCR_RTS;
449 if (clear & TIOCM_DTR)
450 priv->line_control &= ~MCR_DTR;
451 control = priv->line_control;
452 spin_unlock_irqrestore(&priv->lock, flags);
453
454 return spcp8x5_set_ctrl_line(port, control);
455}
456
457static int spcp8x5_tiocmget(struct tty_struct *tty)
458{
459 struct usb_serial_port *port = tty->driver_data;
460 struct spcp8x5_private *priv = usb_get_serial_port_data(port);
461 unsigned long flags;
462 unsigned int mcr;
463 u8 status;
464 unsigned int result;
465
466 result = spcp8x5_get_msr(port, &status);
467 if (result)
468 return result;
469
470 spin_lock_irqsave(&priv->lock, flags);
471 mcr = priv->line_control;
472 spin_unlock_irqrestore(&priv->lock, flags);
473
474 result = ((mcr & MCR_DTR) ? TIOCM_DTR : 0)
475 | ((mcr & MCR_RTS) ? TIOCM_RTS : 0)
476 | ((status & MSR_STATUS_LINE_CTS) ? TIOCM_CTS : 0)
477 | ((status & MSR_STATUS_LINE_DSR) ? TIOCM_DSR : 0)
478 | ((status & MSR_STATUS_LINE_RI) ? TIOCM_RI : 0)
479 | ((status & MSR_STATUS_LINE_DCD) ? TIOCM_CD : 0);
480
481 return result;
482}
483
484static struct usb_serial_driver spcp8x5_device = {
485 .driver = {
486 .owner = THIS_MODULE,
487 .name = "SPCP8x5",
488 },
489 .id_table = id_table,
490 .num_ports = 1,
491 .open = spcp8x5_open,
492 .dtr_rts = spcp8x5_dtr_rts,
493 .carrier_raised = spcp8x5_carrier_raised,
494 .set_termios = spcp8x5_set_termios,
495 .init_termios = spcp8x5_init_termios,
496 .tiocmget = spcp8x5_tiocmget,
497 .tiocmset = spcp8x5_tiocmset,
498 .probe = spcp8x5_probe,
499 .attach = spcp8x5_attach,
500 .port_probe = spcp8x5_port_probe,
501 .port_remove = spcp8x5_port_remove,
502};
503
504static struct usb_serial_driver * const serial_drivers[] = {
505 &spcp8x5_device, NULL
506};
507
508module_usb_serial_driver(serial_drivers, id_table);
509
510MODULE_DESCRIPTION(DRIVER_DESC);
511MODULE_LICENSE("GPL");