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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 | ||
36 | static int debug; | |
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 | 49 | static 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 | }; | |
57 | MODULE_DEVICE_TABLE(usb, id_table); | |
58 | ||
59 | struct 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 | ||
146 | enum 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 |
154 | static struct usb_driver spcp8x5_driver = { |
155 | .name = "spcp8x5", | |
156 | .probe = usb_serial_probe, | |
157 | .disconnect = usb_serial_disconnect, | |
158 | .id_table = id_table, | |
159 | .no_dynamic_id = 1, | |
160 | }; | |
161 | ||
162 | ||
163 | struct spcp8x5_private { | |
164 | spinlock_t lock; | |
619a6f1d GKH |
165 | enum spcp8x5_type type; |
166 | wait_queue_head_t delta_msr_wait; | |
167 | u8 line_control; | |
168 | u8 line_status; | |
619a6f1d GKH |
169 | }; |
170 | ||
171 | /* desc : when device plug in,this function would be called. | |
172 | * thanks to usb_serial subsystem,then do almost every things for us. And what | |
173 | * we should do just alloc the buffer */ | |
174 | static int spcp8x5_startup(struct usb_serial *serial) | |
175 | { | |
176 | struct spcp8x5_private *priv; | |
177 | int i; | |
178 | enum spcp8x5_type type = SPCP825_007_TYPE; | |
fd05e720 | 179 | u16 product = le16_to_cpu(serial->dev->descriptor.idProduct); |
619a6f1d | 180 | |
fd05e720 | 181 | if (product == 0x0201) |
619a6f1d | 182 | type = SPCP825_007_TYPE; |
fd05e720 | 183 | else if (product == 0x0231) |
619a6f1d | 184 | type = SPCP835_TYPE; |
fd05e720 | 185 | else if (product == 0x0235) |
619a6f1d | 186 | type = SPCP825_008_TYPE; |
fd05e720 | 187 | else if (product == 0x0204) |
619a6f1d | 188 | type = SPCP825_INTERMATIC_TYPE; |
fd05e720 AV |
189 | else if (product == 0x0471 && |
190 | serial->dev->descriptor.idVendor == cpu_to_le16(0x081e)) | |
619a6f1d GKH |
191 | type = SPCP825_PHILIP_TYPE; |
192 | dev_dbg(&serial->dev->dev, "device type = %d\n", (int)type); | |
193 | ||
194 | for (i = 0; i < serial->num_ports; ++i) { | |
195 | priv = kzalloc(sizeof(struct spcp8x5_private), GFP_KERNEL); | |
196 | if (!priv) | |
197 | goto cleanup; | |
198 | ||
199 | spin_lock_init(&priv->lock); | |
619a6f1d GKH |
200 | init_waitqueue_head(&priv->delta_msr_wait); |
201 | priv->type = type; | |
202 | usb_set_serial_port_data(serial->port[i] , priv); | |
619a6f1d GKH |
203 | } |
204 | ||
205 | return 0; | |
619a6f1d GKH |
206 | cleanup: |
207 | for (--i; i >= 0; --i) { | |
208 | priv = usb_get_serial_port_data(serial->port[i]); | |
619a6f1d GKH |
209 | kfree(priv); |
210 | usb_set_serial_port_data(serial->port[i] , NULL); | |
211 | } | |
212 | return -ENOMEM; | |
213 | } | |
214 | ||
215 | /* call when the device plug out. free all the memory alloced by probe */ | |
f9c99bb8 | 216 | static void spcp8x5_release(struct usb_serial *serial) |
619a6f1d GKH |
217 | { |
218 | int i; | |
619a6f1d | 219 | |
fa993ca8 JH |
220 | for (i = 0; i < serial->num_ports; i++) |
221 | kfree(usb_get_serial_port_data(serial->port[i])); | |
619a6f1d GKH |
222 | } |
223 | ||
224 | /* set the modem control line of the device. | |
225 | * NOTE spcp825-007 not supported this */ | |
226 | static int spcp8x5_set_ctrlLine(struct usb_device *dev, u8 value, | |
227 | enum spcp8x5_type type) | |
228 | { | |
229 | int retval; | |
230 | u8 mcr = 0 ; | |
231 | ||
232 | if (type == SPCP825_007_TYPE) | |
233 | return -EPERM; | |
234 | ||
235 | mcr = (unsigned short)value; | |
236 | retval = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), | |
237 | SET_UART_STATUS_TYPE, SET_UART_STATUS, | |
238 | mcr, 0x04, NULL, 0, 100); | |
239 | if (retval != 0) | |
240 | dev_dbg(&dev->dev, "usb_control_msg return %#x\n", retval); | |
241 | return retval; | |
242 | } | |
243 | ||
244 | /* get the modem status register of the device | |
245 | * NOTE spcp825-007 not supported this */ | |
246 | static int spcp8x5_get_msr(struct usb_device *dev, u8 *status, | |
247 | enum spcp8x5_type type) | |
248 | { | |
249 | u8 *status_buffer; | |
250 | int ret; | |
251 | ||
252 | /* I return Permited not support here but seem inval device | |
253 | * is more fix */ | |
254 | if (type == SPCP825_007_TYPE) | |
255 | return -EPERM; | |
256 | if (status == NULL) | |
257 | return -EINVAL; | |
258 | ||
259 | status_buffer = kmalloc(1, GFP_KERNEL); | |
260 | if (!status_buffer) | |
261 | return -ENOMEM; | |
262 | status_buffer[0] = status[0]; | |
263 | ||
264 | ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), | |
265 | GET_UART_STATUS, GET_UART_STATUS_TYPE, | |
266 | 0, GET_UART_STATUS_MSR, status_buffer, 1, 100); | |
267 | if (ret < 0) | |
268 | dev_dbg(&dev->dev, "Get MSR = 0x%p failed (error = %d)", | |
269 | status_buffer, ret); | |
270 | ||
271 | dev_dbg(&dev->dev, "0xc0:0x22:0:6 %d - 0x%p ", ret, status_buffer); | |
272 | status[0] = status_buffer[0]; | |
273 | kfree(status_buffer); | |
274 | ||
275 | return ret; | |
276 | } | |
277 | ||
278 | /* select the work mode. | |
279 | * NOTE this function not supported by spcp825-007 */ | |
280 | static void spcp8x5_set_workMode(struct usb_device *dev, u16 value, | |
281 | u16 index, enum spcp8x5_type type) | |
282 | { | |
283 | int ret; | |
284 | ||
285 | /* I return Permited not support here but seem inval device | |
286 | * is more fix */ | |
287 | if (type == SPCP825_007_TYPE) | |
288 | return; | |
289 | ||
290 | ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), | |
291 | SET_WORKING_MODE_TYPE, SET_WORKING_MODE, | |
292 | value, index, NULL, 0, 100); | |
293 | dev_dbg(&dev->dev, "value = %#x , index = %#x\n", value, index); | |
294 | if (ret < 0) | |
295 | dev_dbg(&dev->dev, | |
296 | "RTSCTS usb_control_msg(enable flowctrl) = %d\n", ret); | |
297 | } | |
298 | ||
335f8514 AC |
299 | static int spcp8x5_carrier_raised(struct usb_serial_port *port) |
300 | { | |
301 | struct spcp8x5_private *priv = usb_get_serial_port_data(port); | |
302 | if (priv->line_status & MSR_STATUS_LINE_DCD) | |
303 | return 1; | |
304 | return 0; | |
305 | } | |
306 | ||
307 | static void spcp8x5_dtr_rts(struct usb_serial_port *port, int on) | |
308 | { | |
309 | struct spcp8x5_private *priv = usb_get_serial_port_data(port); | |
310 | unsigned long flags; | |
311 | u8 control; | |
312 | ||
313 | spin_lock_irqsave(&priv->lock, flags); | |
314 | if (on) | |
315 | priv->line_control = MCR_CONTROL_LINE_DTR | |
316 | | MCR_CONTROL_LINE_RTS; | |
317 | else | |
318 | priv->line_control &= ~ (MCR_CONTROL_LINE_DTR | |
319 | | MCR_CONTROL_LINE_RTS); | |
320 | control = priv->line_control; | |
321 | spin_unlock_irqrestore(&priv->lock, flags); | |
322 | spcp8x5_set_ctrlLine(port->serial->dev, control , priv->type); | |
323 | } | |
324 | ||
fe1ae7fd AC |
325 | static void spcp8x5_init_termios(struct tty_struct *tty) |
326 | { | |
327 | /* for the 1st time call this function */ | |
328 | *(tty->termios) = tty_std_termios; | |
329 | tty->termios->c_cflag = B115200 | CS8 | CREAD | HUPCL | CLOCAL; | |
330 | tty->termios->c_ispeed = 115200; | |
331 | tty->termios->c_ospeed = 115200; | |
332 | } | |
333 | ||
619a6f1d | 334 | /* set the serial param for transfer. we should check if we really need to |
95da310e AC |
335 | * transfer. if we set flow control we should do this too. */ |
336 | static void spcp8x5_set_termios(struct tty_struct *tty, | |
337 | struct usb_serial_port *port, struct ktermios *old_termios) | |
619a6f1d GKH |
338 | { |
339 | struct usb_serial *serial = port->serial; | |
340 | struct spcp8x5_private *priv = usb_get_serial_port_data(port); | |
341 | unsigned long flags; | |
95da310e | 342 | unsigned int cflag = tty->termios->c_cflag; |
619a6f1d GKH |
343 | unsigned int old_cflag = old_termios->c_cflag; |
344 | unsigned short uartdata; | |
345 | unsigned char buf[2] = {0, 0}; | |
346 | int baud; | |
347 | int i; | |
348 | u8 control; | |
349 | ||
619a6f1d GKH |
350 | |
351 | /* check that they really want us to change something */ | |
95da310e | 352 | if (!tty_termios_hw_change(tty->termios, old_termios)) |
619a6f1d GKH |
353 | return; |
354 | ||
355 | /* set DTR/RTS active */ | |
356 | spin_lock_irqsave(&priv->lock, flags); | |
357 | control = priv->line_control; | |
358 | if ((old_cflag & CBAUD) == B0) { | |
359 | priv->line_control |= MCR_DTR; | |
360 | if (!(old_cflag & CRTSCTS)) | |
361 | priv->line_control |= MCR_RTS; | |
362 | } | |
363 | if (control != priv->line_control) { | |
364 | control = priv->line_control; | |
365 | spin_unlock_irqrestore(&priv->lock, flags); | |
366 | spcp8x5_set_ctrlLine(serial->dev, control , priv->type); | |
367 | } else { | |
368 | spin_unlock_irqrestore(&priv->lock, flags); | |
369 | } | |
370 | ||
371 | /* Set Baud Rate */ | |
a419aef8 | 372 | baud = tty_get_baud_rate(tty); |
619a6f1d GKH |
373 | switch (baud) { |
374 | case 300: buf[0] = 0x00; break; | |
375 | case 600: buf[0] = 0x01; break; | |
376 | case 1200: buf[0] = 0x02; break; | |
377 | case 2400: buf[0] = 0x03; break; | |
378 | case 4800: buf[0] = 0x04; break; | |
379 | case 9600: buf[0] = 0x05; break; | |
380 | case 19200: buf[0] = 0x07; break; | |
381 | case 38400: buf[0] = 0x09; break; | |
382 | case 57600: buf[0] = 0x0a; break; | |
383 | case 115200: buf[0] = 0x0b; break; | |
384 | case 230400: buf[0] = 0x0c; break; | |
385 | case 460800: buf[0] = 0x0d; break; | |
386 | case 921600: buf[0] = 0x0e; break; | |
387 | /* case 1200000: buf[0] = 0x0f; break; */ | |
388 | /* case 2400000: buf[0] = 0x10; break; */ | |
389 | case 3000000: buf[0] = 0x11; break; | |
390 | /* case 6000000: buf[0] = 0x12; break; */ | |
391 | case 0: | |
392 | case 1000000: | |
393 | buf[0] = 0x0b; break; | |
394 | default: | |
194343d9 GKH |
395 | dev_err(&port->dev, "spcp825 driver does not support the " |
396 | "baudrate requested, using default of 9600.\n"); | |
619a6f1d GKH |
397 | } |
398 | ||
399 | /* Set Data Length : 00:5bit, 01:6bit, 10:7bit, 11:8bit */ | |
400 | if (cflag & CSIZE) { | |
401 | switch (cflag & CSIZE) { | |
402 | case CS5: | |
403 | buf[1] |= SET_UART_FORMAT_SIZE_5; | |
404 | break; | |
405 | case CS6: | |
406 | buf[1] |= SET_UART_FORMAT_SIZE_6; | |
407 | break; | |
408 | case CS7: | |
409 | buf[1] |= SET_UART_FORMAT_SIZE_7; | |
410 | break; | |
411 | default: | |
412 | case CS8: | |
413 | buf[1] |= SET_UART_FORMAT_SIZE_8; | |
414 | break; | |
415 | } | |
416 | } | |
417 | ||
418 | /* Set Stop bit2 : 0:1bit 1:2bit */ | |
419 | buf[1] |= (cflag & CSTOPB) ? SET_UART_FORMAT_STOP_2 : | |
420 | SET_UART_FORMAT_STOP_1; | |
421 | ||
422 | /* Set Parity bit3-4 01:Odd 11:Even */ | |
423 | if (cflag & PARENB) { | |
424 | buf[1] |= (cflag & PARODD) ? | |
425 | SET_UART_FORMAT_PAR_ODD : SET_UART_FORMAT_PAR_EVEN ; | |
426 | } else | |
427 | buf[1] |= SET_UART_FORMAT_PAR_NONE; | |
428 | ||
429 | uartdata = buf[0] | buf[1]<<8; | |
430 | ||
431 | i = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), | |
432 | SET_UART_FORMAT_TYPE, SET_UART_FORMAT, | |
433 | uartdata, 0, NULL, 0, 100); | |
434 | if (i < 0) | |
194343d9 GKH |
435 | dev_err(&port->dev, "Set UART format %#x failed (error = %d)\n", |
436 | uartdata, i); | |
759f3634 | 437 | dbg("0x21:0x40:0:0 %d", i); |
619a6f1d GKH |
438 | |
439 | if (cflag & CRTSCTS) { | |
440 | /* enable hardware flow control */ | |
441 | spcp8x5_set_workMode(serial->dev, 0x000a, | |
442 | SET_WORKING_MODE_U2C, priv->type); | |
443 | } | |
619a6f1d GKH |
444 | } |
445 | ||
446 | /* open the serial port. do some usb system call. set termios and get the line | |
fa993ca8 | 447 | * status of the device. */ |
a509a7e4 | 448 | static int spcp8x5_open(struct tty_struct *tty, struct usb_serial_port *port) |
619a6f1d GKH |
449 | { |
450 | struct ktermios tmp_termios; | |
451 | struct usb_serial *serial = port->serial; | |
452 | struct spcp8x5_private *priv = usb_get_serial_port_data(port); | |
453 | int ret; | |
454 | unsigned long flags; | |
455 | u8 status = 0x30; | |
456 | /* status 0x30 means DSR and CTS = 1 other CDC RI and delta = 0 */ | |
457 | ||
458 | dbg("%s - port %d", __func__, port->number); | |
459 | ||
460 | usb_clear_halt(serial->dev, port->write_urb->pipe); | |
461 | usb_clear_halt(serial->dev, port->read_urb->pipe); | |
462 | ||
463 | ret = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), | |
464 | 0x09, 0x00, | |
465 | 0x01, 0x00, NULL, 0x00, 100); | |
466 | if (ret) | |
467 | return ret; | |
468 | ||
619a6f1d GKH |
469 | spcp8x5_set_ctrlLine(serial->dev, priv->line_control , priv->type); |
470 | ||
471 | /* Setup termios */ | |
95da310e AC |
472 | if (tty) |
473 | spcp8x5_set_termios(tty, port, &tmp_termios); | |
619a6f1d GKH |
474 | |
475 | spcp8x5_get_msr(serial->dev, &status, priv->type); | |
476 | ||
477 | /* may be we should update uart status here but now we did not do */ | |
478 | spin_lock_irqsave(&priv->lock, flags); | |
479 | priv->line_status = status & 0xf0 ; | |
480 | spin_unlock_irqrestore(&priv->lock, flags); | |
481 | ||
335f8514 | 482 | port->port.drain_delay = 256; |
fa993ca8 JH |
483 | |
484 | return usb_serial_generic_open(tty, port); | |
619a6f1d GKH |
485 | } |
486 | ||
fa993ca8 | 487 | static void spcp8x5_process_read_urb(struct urb *urb) |
619a6f1d GKH |
488 | { |
489 | struct usb_serial_port *port = urb->context; | |
490 | struct spcp8x5_private *priv = usb_get_serial_port_data(port); | |
491 | struct tty_struct *tty; | |
492 | unsigned char *data = urb->transfer_buffer; | |
493 | unsigned long flags; | |
50de36f7 | 494 | u8 status; |
619a6f1d GKH |
495 | char tty_flag; |
496 | ||
619a6f1d GKH |
497 | /* get tty_flag from status */ |
498 | tty_flag = TTY_NORMAL; | |
499 | ||
500 | spin_lock_irqsave(&priv->lock, flags); | |
501 | status = priv->line_status; | |
502 | priv->line_status &= ~UART_STATE_TRANSIENT_MASK; | |
503 | spin_unlock_irqrestore(&priv->lock, flags); | |
504 | /* wake up the wait for termios */ | |
505 | wake_up_interruptible(&priv->delta_msr_wait); | |
506 | ||
fa993ca8 | 507 | if (!urb->actual_length) |
619a6f1d | 508 | return; |
619a6f1d | 509 | |
fa993ca8 JH |
510 | tty = tty_port_tty_get(&port->port); |
511 | if (!tty) | |
619a6f1d | 512 | return; |
619a6f1d | 513 | |
fa993ca8 JH |
514 | if (status & UART_STATE_TRANSIENT_MASK) { |
515 | /* break takes precedence over parity, which takes precedence | |
516 | * over framing errors */ | |
517 | if (status & UART_BREAK_ERROR) | |
518 | tty_flag = TTY_BREAK; | |
519 | else if (status & UART_PARITY_ERROR) | |
520 | tty_flag = TTY_PARITY; | |
521 | else if (status & UART_FRAME_ERROR) | |
522 | tty_flag = TTY_FRAME; | |
523 | dev_dbg(&port->dev, "tty_flag = %d\n", tty_flag); | |
619a6f1d | 524 | |
fa993ca8 JH |
525 | /* overrun is special, not associated with a char */ |
526 | if (status & UART_OVERRUN_ERROR) | |
527 | tty_insert_flip_char(tty, 0, TTY_OVERRUN); | |
d14fc1a7 LP |
528 | |
529 | if (status & UART_DCD) | |
530 | usb_serial_handle_dcd_change(port, tty, | |
531 | priv->line_status & MSR_STATUS_LINE_DCD); | |
619a6f1d GKH |
532 | } |
533 | ||
fa993ca8 JH |
534 | tty_insert_flip_string_fixed_flag(tty, data, tty_flag, |
535 | urb->actual_length); | |
536 | tty_flip_buffer_push(tty); | |
537 | tty_kref_put(tty); | |
619a6f1d GKH |
538 | } |
539 | ||
540 | static int spcp8x5_wait_modem_info(struct usb_serial_port *port, | |
541 | unsigned int arg) | |
542 | { | |
543 | struct spcp8x5_private *priv = usb_get_serial_port_data(port); | |
544 | unsigned long flags; | |
545 | unsigned int prevstatus; | |
546 | unsigned int status; | |
547 | unsigned int changed; | |
548 | ||
549 | spin_lock_irqsave(&priv->lock, flags); | |
550 | prevstatus = priv->line_status; | |
551 | spin_unlock_irqrestore(&priv->lock, flags); | |
552 | ||
553 | while (1) { | |
554 | /* wake up in bulk read */ | |
555 | interruptible_sleep_on(&priv->delta_msr_wait); | |
556 | ||
557 | /* see if a signal did it */ | |
558 | if (signal_pending(current)) | |
559 | return -ERESTARTSYS; | |
560 | ||
561 | spin_lock_irqsave(&priv->lock, flags); | |
562 | status = priv->line_status; | |
563 | spin_unlock_irqrestore(&priv->lock, flags); | |
564 | ||
565 | changed = prevstatus^status; | |
566 | ||
567 | if (((arg & TIOCM_RNG) && (changed & MSR_STATUS_LINE_RI)) || | |
568 | ((arg & TIOCM_DSR) && (changed & MSR_STATUS_LINE_DSR)) || | |
569 | ((arg & TIOCM_CD) && (changed & MSR_STATUS_LINE_DCD)) || | |
570 | ((arg & TIOCM_CTS) && (changed & MSR_STATUS_LINE_CTS))) | |
571 | return 0; | |
572 | ||
573 | prevstatus = status; | |
574 | } | |
575 | /* NOTREACHED */ | |
576 | return 0; | |
577 | } | |
578 | ||
95da310e | 579 | static int spcp8x5_ioctl(struct tty_struct *tty, struct file *file, |
619a6f1d GKH |
580 | unsigned int cmd, unsigned long arg) |
581 | { | |
95da310e | 582 | struct usb_serial_port *port = tty->driver_data; |
619a6f1d GKH |
583 | dbg("%s (%d) cmd = 0x%04x", __func__, port->number, cmd); |
584 | ||
585 | switch (cmd) { | |
586 | case TIOCMIWAIT: | |
587 | dbg("%s (%d) TIOCMIWAIT", __func__, port->number); | |
588 | return spcp8x5_wait_modem_info(port, arg); | |
589 | ||
590 | default: | |
591 | dbg("%s not supported = 0x%04x", __func__, cmd); | |
592 | break; | |
593 | } | |
594 | ||
595 | return -ENOIOCTLCMD; | |
596 | } | |
597 | ||
95da310e | 598 | static int spcp8x5_tiocmset(struct tty_struct *tty, struct file *file, |
619a6f1d GKH |
599 | unsigned int set, unsigned int clear) |
600 | { | |
95da310e | 601 | struct usb_serial_port *port = tty->driver_data; |
619a6f1d GKH |
602 | struct spcp8x5_private *priv = usb_get_serial_port_data(port); |
603 | unsigned long flags; | |
604 | u8 control; | |
605 | ||
606 | spin_lock_irqsave(&priv->lock, flags); | |
607 | if (set & TIOCM_RTS) | |
608 | priv->line_control |= MCR_RTS; | |
609 | if (set & TIOCM_DTR) | |
610 | priv->line_control |= MCR_DTR; | |
611 | if (clear & TIOCM_RTS) | |
612 | priv->line_control &= ~MCR_RTS; | |
613 | if (clear & TIOCM_DTR) | |
614 | priv->line_control &= ~MCR_DTR; | |
615 | control = priv->line_control; | |
616 | spin_unlock_irqrestore(&priv->lock, flags); | |
617 | ||
618 | return spcp8x5_set_ctrlLine(port->serial->dev, control , priv->type); | |
619 | } | |
620 | ||
95da310e | 621 | static int spcp8x5_tiocmget(struct tty_struct *tty, struct file *file) |
619a6f1d | 622 | { |
95da310e | 623 | struct usb_serial_port *port = tty->driver_data; |
619a6f1d GKH |
624 | struct spcp8x5_private *priv = usb_get_serial_port_data(port); |
625 | unsigned long flags; | |
626 | unsigned int mcr; | |
627 | unsigned int status; | |
628 | unsigned int result; | |
629 | ||
630 | spin_lock_irqsave(&priv->lock, flags); | |
631 | mcr = priv->line_control; | |
632 | status = priv->line_status; | |
633 | spin_unlock_irqrestore(&priv->lock, flags); | |
634 | ||
635 | result = ((mcr & MCR_DTR) ? TIOCM_DTR : 0) | |
636 | | ((mcr & MCR_RTS) ? TIOCM_RTS : 0) | |
637 | | ((status & MSR_STATUS_LINE_CTS) ? TIOCM_CTS : 0) | |
638 | | ((status & MSR_STATUS_LINE_DSR) ? TIOCM_DSR : 0) | |
639 | | ((status & MSR_STATUS_LINE_RI) ? TIOCM_RI : 0) | |
640 | | ((status & MSR_STATUS_LINE_DCD) ? TIOCM_CD : 0); | |
641 | ||
642 | return result; | |
643 | } | |
644 | ||
619a6f1d GKH |
645 | /* All of the device info needed for the spcp8x5 SIO serial converter */ |
646 | static struct usb_serial_driver spcp8x5_device = { | |
647 | .driver = { | |
648 | .owner = THIS_MODULE, | |
649 | .name = "SPCP8x5", | |
650 | }, | |
651 | .id_table = id_table, | |
5620b5f7 | 652 | .usb_driver = &spcp8x5_driver, |
619a6f1d GKH |
653 | .num_ports = 1, |
654 | .open = spcp8x5_open, | |
335f8514 AC |
655 | .dtr_rts = spcp8x5_dtr_rts, |
656 | .carrier_raised = spcp8x5_carrier_raised, | |
619a6f1d | 657 | .set_termios = spcp8x5_set_termios, |
fe1ae7fd | 658 | .init_termios = spcp8x5_init_termios, |
619a6f1d GKH |
659 | .ioctl = spcp8x5_ioctl, |
660 | .tiocmget = spcp8x5_tiocmget, | |
661 | .tiocmset = spcp8x5_tiocmset, | |
619a6f1d | 662 | .attach = spcp8x5_startup, |
f9c99bb8 | 663 | .release = spcp8x5_release, |
fa993ca8 | 664 | .process_read_urb = spcp8x5_process_read_urb, |
619a6f1d GKH |
665 | }; |
666 | ||
667 | static int __init spcp8x5_init(void) | |
668 | { | |
669 | int retval; | |
670 | retval = usb_serial_register(&spcp8x5_device); | |
671 | if (retval) | |
672 | goto failed_usb_serial_register; | |
673 | retval = usb_register(&spcp8x5_driver); | |
674 | if (retval) | |
675 | goto failed_usb_register; | |
c197a8db GKH |
676 | printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":" |
677 | DRIVER_DESC "\n"); | |
619a6f1d GKH |
678 | return 0; |
679 | failed_usb_register: | |
680 | usb_serial_deregister(&spcp8x5_device); | |
681 | failed_usb_serial_register: | |
682 | return retval; | |
683 | } | |
684 | ||
685 | static void __exit spcp8x5_exit(void) | |
686 | { | |
687 | usb_deregister(&spcp8x5_driver); | |
688 | usb_serial_deregister(&spcp8x5_device); | |
689 | } | |
690 | ||
691 | module_init(spcp8x5_init); | |
692 | module_exit(spcp8x5_exit); | |
693 | ||
694 | MODULE_DESCRIPTION(DRIVER_DESC); | |
695 | MODULE_VERSION(DRIVER_VERSION); | |
696 | MODULE_LICENSE("GPL"); | |
697 | ||
698 | module_param(debug, bool, S_IRUGO | S_IWUSR); | |
699 | MODULE_PARM_DESC(debug, "Debug enabled or not"); |