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3f542974 PS |
1 | /* |
2 | * This program is free software; you can redistribute it and/or modify | |
3 | * it under the terms of the GNU General Public License as published by | |
4 | * the Free Software Foundation; either version 2 of the License, or | |
5 | * (at your option) any later version. | |
6 | * | |
7 | * This program is distributed in the hope that it will be useful, | |
8 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
9 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
10 | * GNU General Public License for more details. | |
11 | * | |
12 | * You should have received a copy of the GNU General Public License | |
13 | * along with this program; if not, write to the Free Software | |
14 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
15 | * | |
16 | * Clean ups from Moschip version and a few ioctl implementations by: | |
17 | * Paul B Schroeder <pschroeder "at" uplogix "dot" com> | |
18 | * | |
19 | * Originally based on drivers/usb/serial/io_edgeport.c which is: | |
20 | * Copyright (C) 2000 Inside Out Networks, All rights reserved. | |
21 | * Copyright (C) 2001-2002 Greg Kroah-Hartman <greg@kroah.com> | |
22 | * | |
23 | */ | |
24 | ||
25 | #include <linux/kernel.h> | |
26 | #include <linux/errno.h> | |
27 | #include <linux/init.h> | |
28 | #include <linux/slab.h> | |
29 | #include <linux/tty.h> | |
30 | #include <linux/tty_driver.h> | |
31 | #include <linux/tty_flip.h> | |
32 | #include <linux/module.h> | |
33 | #include <linux/serial.h> | |
34 | #include <linux/usb.h> | |
35 | #include <linux/usb/serial.h> | |
36 | #include <asm/uaccess.h> | |
37 | ||
38 | /* | |
39 | * Version Information | |
40 | */ | |
41 | #define DRIVER_VERSION "1.3.1" | |
42 | #define DRIVER_DESC "Moschip 7840/7820 USB Serial Driver" | |
43 | ||
44 | /* | |
45 | * 16C50 UART register defines | |
46 | */ | |
47 | ||
48 | #define LCR_BITS_5 0x00 /* 5 bits/char */ | |
49 | #define LCR_BITS_6 0x01 /* 6 bits/char */ | |
50 | #define LCR_BITS_7 0x02 /* 7 bits/char */ | |
51 | #define LCR_BITS_8 0x03 /* 8 bits/char */ | |
52 | #define LCR_BITS_MASK 0x03 /* Mask for bits/char field */ | |
53 | ||
54 | #define LCR_STOP_1 0x00 /* 1 stop bit */ | |
55 | #define LCR_STOP_1_5 0x04 /* 1.5 stop bits (if 5 bits/char) */ | |
56 | #define LCR_STOP_2 0x04 /* 2 stop bits (if 6-8 bits/char) */ | |
57 | #define LCR_STOP_MASK 0x04 /* Mask for stop bits field */ | |
58 | ||
59 | #define LCR_PAR_NONE 0x00 /* No parity */ | |
60 | #define LCR_PAR_ODD 0x08 /* Odd parity */ | |
61 | #define LCR_PAR_EVEN 0x18 /* Even parity */ | |
62 | #define LCR_PAR_MARK 0x28 /* Force parity bit to 1 */ | |
63 | #define LCR_PAR_SPACE 0x38 /* Force parity bit to 0 */ | |
64 | #define LCR_PAR_MASK 0x38 /* Mask for parity field */ | |
65 | ||
66 | #define LCR_SET_BREAK 0x40 /* Set Break condition */ | |
67 | #define LCR_DL_ENABLE 0x80 /* Enable access to divisor latch */ | |
68 | ||
69 | #define MCR_DTR 0x01 /* Assert DTR */ | |
70 | #define MCR_RTS 0x02 /* Assert RTS */ | |
71 | #define MCR_OUT1 0x04 /* Loopback only: Sets state of RI */ | |
72 | #define MCR_MASTER_IE 0x08 /* Enable interrupt outputs */ | |
73 | #define MCR_LOOPBACK 0x10 /* Set internal (digital) loopback mode */ | |
74 | #define MCR_XON_ANY 0x20 /* Enable any char to exit XOFF mode */ | |
75 | ||
76 | #define MOS7840_MSR_CTS 0x10 /* Current state of CTS */ | |
77 | #define MOS7840_MSR_DSR 0x20 /* Current state of DSR */ | |
78 | #define MOS7840_MSR_RI 0x40 /* Current state of RI */ | |
79 | #define MOS7840_MSR_CD 0x80 /* Current state of CD */ | |
80 | ||
81 | /* | |
82 | * Defines used for sending commands to port | |
83 | */ | |
84 | ||
85 | #define WAIT_FOR_EVER (HZ * 0 ) /* timeout urb is wait for ever */ | |
86 | #define MOS_WDR_TIMEOUT (HZ * 5 ) /* default urb timeout */ | |
87 | ||
88 | #define MOS_PORT1 0x0200 | |
89 | #define MOS_PORT2 0x0300 | |
90 | #define MOS_VENREG 0x0000 | |
91 | #define MOS_MAX_PORT 0x02 | |
92 | #define MOS_WRITE 0x0E | |
93 | #define MOS_READ 0x0D | |
94 | ||
95 | /* Requests */ | |
96 | #define MCS_RD_RTYPE 0xC0 | |
97 | #define MCS_WR_RTYPE 0x40 | |
98 | #define MCS_RDREQ 0x0D | |
99 | #define MCS_WRREQ 0x0E | |
100 | #define MCS_CTRL_TIMEOUT 500 | |
101 | #define VENDOR_READ_LENGTH (0x01) | |
102 | ||
103 | #define MAX_NAME_LEN 64 | |
104 | ||
105 | #define ZLP_REG1 0x3A //Zero_Flag_Reg1 58 | |
106 | #define ZLP_REG5 0x3E //Zero_Flag_Reg5 62 | |
107 | ||
108 | /* For higher baud Rates use TIOCEXBAUD */ | |
109 | #define TIOCEXBAUD 0x5462 | |
110 | ||
111 | /* vendor id and device id defines */ | |
112 | ||
11e1abb4 | 113 | /* The native mos7840/7820 component */ |
3f542974 PS |
114 | #define USB_VENDOR_ID_MOSCHIP 0x9710 |
115 | #define MOSCHIP_DEVICE_ID_7840 0x7840 | |
116 | #define MOSCHIP_DEVICE_ID_7820 0x7820 | |
11e1abb4 DL |
117 | /* The native component can have its vendor/device id's overridden |
118 | * in vendor-specific implementations. Such devices can be handled | |
119 | * by making a change here, in moschip_port_id_table, and in | |
120 | * moschip_id_table_combined | |
121 | */ | |
122 | #define USB_VENDOR_ID_BANDB 0x0856 | |
123 | #define BANDB_DEVICE_ID_USOPTL4_4 0xAC44 | |
124 | #define BANDB_DEVICE_ID_USOPTL4_2 0xAC42 | |
3f542974 | 125 | |
11e1abb4 | 126 | /* Interrupt Routine Defines */ |
3f542974 PS |
127 | |
128 | #define SERIAL_IIR_RLS 0x06 | |
129 | #define SERIAL_IIR_MS 0x00 | |
130 | ||
131 | /* | |
132 | * Emulation of the bit mask on the LINE STATUS REGISTER. | |
133 | */ | |
134 | #define SERIAL_LSR_DR 0x0001 | |
135 | #define SERIAL_LSR_OE 0x0002 | |
136 | #define SERIAL_LSR_PE 0x0004 | |
137 | #define SERIAL_LSR_FE 0x0008 | |
138 | #define SERIAL_LSR_BI 0x0010 | |
139 | ||
140 | #define MOS_MSR_DELTA_CTS 0x10 | |
141 | #define MOS_MSR_DELTA_DSR 0x20 | |
142 | #define MOS_MSR_DELTA_RI 0x40 | |
143 | #define MOS_MSR_DELTA_CD 0x80 | |
144 | ||
145 | // Serial Port register Address | |
146 | #define INTERRUPT_ENABLE_REGISTER ((__u16)(0x01)) | |
147 | #define FIFO_CONTROL_REGISTER ((__u16)(0x02)) | |
148 | #define LINE_CONTROL_REGISTER ((__u16)(0x03)) | |
149 | #define MODEM_CONTROL_REGISTER ((__u16)(0x04)) | |
150 | #define LINE_STATUS_REGISTER ((__u16)(0x05)) | |
151 | #define MODEM_STATUS_REGISTER ((__u16)(0x06)) | |
152 | #define SCRATCH_PAD_REGISTER ((__u16)(0x07)) | |
153 | #define DIVISOR_LATCH_LSB ((__u16)(0x00)) | |
154 | #define DIVISOR_LATCH_MSB ((__u16)(0x01)) | |
155 | ||
156 | #define CLK_MULTI_REGISTER ((__u16)(0x02)) | |
157 | #define CLK_START_VALUE_REGISTER ((__u16)(0x03)) | |
158 | ||
159 | #define SERIAL_LCR_DLAB ((__u16)(0x0080)) | |
160 | ||
161 | /* | |
162 | * URB POOL related defines | |
163 | */ | |
164 | #define NUM_URBS 16 /* URB Count */ | |
165 | #define URB_TRANSFER_BUFFER_SIZE 32 /* URB Size */ | |
166 | ||
167 | ||
168 | static struct usb_device_id moschip_port_id_table[] = { | |
169 | {USB_DEVICE(USB_VENDOR_ID_MOSCHIP, MOSCHIP_DEVICE_ID_7840)}, | |
170 | {USB_DEVICE(USB_VENDOR_ID_MOSCHIP, MOSCHIP_DEVICE_ID_7820)}, | |
11e1abb4 DL |
171 | {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USOPTL4_4)}, |
172 | {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USOPTL4_2)}, | |
3f542974 PS |
173 | {} /* terminating entry */ |
174 | }; | |
175 | ||
176 | static __devinitdata struct usb_device_id moschip_id_table_combined[] = { | |
177 | {USB_DEVICE(USB_VENDOR_ID_MOSCHIP, MOSCHIP_DEVICE_ID_7840)}, | |
178 | {USB_DEVICE(USB_VENDOR_ID_MOSCHIP, MOSCHIP_DEVICE_ID_7820)}, | |
11e1abb4 DL |
179 | {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USOPTL4_4)}, |
180 | {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USOPTL4_2)}, | |
3f542974 PS |
181 | {} /* terminating entry */ |
182 | }; | |
183 | ||
184 | MODULE_DEVICE_TABLE(usb, moschip_id_table_combined); | |
185 | ||
186 | /* This structure holds all of the local port information */ | |
187 | ||
188 | struct moschip_port { | |
189 | int port_num; /*Actual port number in the device(1,2,etc) */ | |
190 | struct urb *write_urb; /* write URB for this port */ | |
191 | struct urb *read_urb; /* read URB for this port */ | |
0de9a702 | 192 | struct urb *int_urb; |
3f542974 PS |
193 | __u8 shadowLCR; /* last LCR value received */ |
194 | __u8 shadowMCR; /* last MCR value received */ | |
195 | char open; | |
0de9a702 ON |
196 | char open_ports; |
197 | char zombie; | |
3f542974 PS |
198 | wait_queue_head_t wait_chase; /* for handling sleeping while waiting for chase to finish */ |
199 | wait_queue_head_t delta_msr_wait; /* for handling sleeping while waiting for msr change to happen */ | |
200 | int delta_msr_cond; | |
201 | struct async_icount icount; | |
202 | struct usb_serial_port *port; /* loop back to the owner of this object */ | |
203 | ||
204 | /*Offsets */ | |
205 | __u8 SpRegOffset; | |
206 | __u8 ControlRegOffset; | |
207 | __u8 DcrRegOffset; | |
208 | //for processing control URBS in interrupt context | |
209 | struct urb *control_urb; | |
0de9a702 | 210 | struct usb_ctrlrequest *dr; |
3f542974 PS |
211 | char *ctrl_buf; |
212 | int MsrLsr; | |
213 | ||
0de9a702 | 214 | spinlock_t pool_lock; |
3f542974 | 215 | struct urb *write_urb_pool[NUM_URBS]; |
0de9a702 | 216 | char busy[NUM_URBS]; |
3f542974 PS |
217 | }; |
218 | ||
219 | ||
220 | static int debug; | |
3f542974 PS |
221 | |
222 | /* | |
223 | * mos7840_set_reg_sync | |
224 | * To set the Control register by calling usb_fill_control_urb function | |
225 | * by passing usb_sndctrlpipe function as parameter. | |
226 | */ | |
227 | ||
228 | static int mos7840_set_reg_sync(struct usb_serial_port *port, __u16 reg, | |
229 | __u16 val) | |
230 | { | |
231 | struct usb_device *dev = port->serial->dev; | |
232 | val = val & 0x00ff; | |
233 | dbg("mos7840_set_reg_sync offset is %x, value %x\n", reg, val); | |
234 | ||
235 | return usb_control_msg(dev, usb_sndctrlpipe(dev, 0), MCS_WRREQ, | |
236 | MCS_WR_RTYPE, val, reg, NULL, 0, | |
237 | MOS_WDR_TIMEOUT); | |
238 | } | |
239 | ||
240 | /* | |
241 | * mos7840_get_reg_sync | |
242 | * To set the Uart register by calling usb_fill_control_urb function by | |
243 | * passing usb_rcvctrlpipe function as parameter. | |
244 | */ | |
245 | ||
246 | static int mos7840_get_reg_sync(struct usb_serial_port *port, __u16 reg, | |
247 | __u16 * val) | |
248 | { | |
249 | struct usb_device *dev = port->serial->dev; | |
250 | int ret = 0; | |
251 | ||
252 | ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), MCS_RDREQ, | |
253 | MCS_RD_RTYPE, 0, reg, val, VENDOR_READ_LENGTH, | |
254 | MOS_WDR_TIMEOUT); | |
255 | dbg("mos7840_get_reg_sync offset is %x, return val %x\n", reg, *val); | |
256 | *val = (*val) & 0x00ff; | |
257 | return ret; | |
258 | } | |
259 | ||
260 | /* | |
261 | * mos7840_set_uart_reg | |
262 | * To set the Uart register by calling usb_fill_control_urb function by | |
263 | * passing usb_sndctrlpipe function as parameter. | |
264 | */ | |
265 | ||
266 | static int mos7840_set_uart_reg(struct usb_serial_port *port, __u16 reg, | |
267 | __u16 val) | |
268 | { | |
269 | ||
270 | struct usb_device *dev = port->serial->dev; | |
271 | val = val & 0x00ff; | |
272 | // For the UART control registers, the application number need to be Or'ed | |
0de9a702 | 273 | if (port->serial->num_ports == 4) { |
3f542974 PS |
274 | val |= |
275 | (((__u16) port->number - (__u16) (port->serial->minor)) + | |
276 | 1) << 8; | |
277 | dbg("mos7840_set_uart_reg application number is %x\n", val); | |
278 | } else { | |
279 | if (((__u16) port->number - (__u16) (port->serial->minor)) == 0) { | |
280 | val |= | |
281 | (((__u16) port->number - | |
282 | (__u16) (port->serial->minor)) + 1) << 8; | |
283 | dbg("mos7840_set_uart_reg application number is %x\n", | |
284 | val); | |
285 | } else { | |
286 | val |= | |
287 | (((__u16) port->number - | |
288 | (__u16) (port->serial->minor)) + 2) << 8; | |
289 | dbg("mos7840_set_uart_reg application number is %x\n", | |
290 | val); | |
291 | } | |
292 | } | |
293 | return usb_control_msg(dev, usb_sndctrlpipe(dev, 0), MCS_WRREQ, | |
294 | MCS_WR_RTYPE, val, reg, NULL, 0, | |
295 | MOS_WDR_TIMEOUT); | |
296 | ||
297 | } | |
298 | ||
299 | /* | |
300 | * mos7840_get_uart_reg | |
301 | * To set the Control register by calling usb_fill_control_urb function | |
302 | * by passing usb_rcvctrlpipe function as parameter. | |
303 | */ | |
304 | static int mos7840_get_uart_reg(struct usb_serial_port *port, __u16 reg, | |
305 | __u16 * val) | |
306 | { | |
307 | struct usb_device *dev = port->serial->dev; | |
308 | int ret = 0; | |
309 | __u16 Wval; | |
310 | ||
311 | //dbg("application number is %4x \n",(((__u16)port->number - (__u16)(port->serial->minor))+1)<<8); | |
312 | /*Wval is same as application number */ | |
0de9a702 | 313 | if (port->serial->num_ports == 4) { |
3f542974 PS |
314 | Wval = |
315 | (((__u16) port->number - (__u16) (port->serial->minor)) + | |
316 | 1) << 8; | |
317 | dbg("mos7840_get_uart_reg application number is %x\n", Wval); | |
318 | } else { | |
319 | if (((__u16) port->number - (__u16) (port->serial->minor)) == 0) { | |
320 | Wval = | |
321 | (((__u16) port->number - | |
322 | (__u16) (port->serial->minor)) + 1) << 8; | |
323 | dbg("mos7840_get_uart_reg application number is %x\n", | |
324 | Wval); | |
325 | } else { | |
326 | Wval = | |
327 | (((__u16) port->number - | |
328 | (__u16) (port->serial->minor)) + 2) << 8; | |
329 | dbg("mos7840_get_uart_reg application number is %x\n", | |
330 | Wval); | |
331 | } | |
332 | } | |
333 | ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), MCS_RDREQ, | |
334 | MCS_RD_RTYPE, Wval, reg, val, VENDOR_READ_LENGTH, | |
335 | MOS_WDR_TIMEOUT); | |
336 | *val = (*val) & 0x00ff; | |
337 | return ret; | |
338 | } | |
339 | ||
340 | static void mos7840_dump_serial_port(struct moschip_port *mos7840_port) | |
341 | { | |
342 | ||
343 | dbg("***************************************\n"); | |
344 | dbg("SpRegOffset is %2x\n", mos7840_port->SpRegOffset); | |
345 | dbg("ControlRegOffset is %2x \n", mos7840_port->ControlRegOffset); | |
346 | dbg("DCRRegOffset is %2x \n", mos7840_port->DcrRegOffset); | |
347 | dbg("***************************************\n"); | |
348 | ||
349 | } | |
350 | ||
351 | /************************************************************************/ | |
352 | /************************************************************************/ | |
353 | /* I N T E R F A C E F U N C T I O N S */ | |
354 | /* I N T E R F A C E F U N C T I O N S */ | |
355 | /************************************************************************/ | |
356 | /************************************************************************/ | |
357 | ||
358 | static inline void mos7840_set_port_private(struct usb_serial_port *port, | |
359 | struct moschip_port *data) | |
360 | { | |
361 | usb_set_serial_port_data(port, (void *)data); | |
362 | } | |
363 | ||
364 | static inline struct moschip_port *mos7840_get_port_private(struct | |
365 | usb_serial_port | |
366 | *port) | |
367 | { | |
368 | return (struct moschip_port *)usb_get_serial_port_data(port); | |
369 | } | |
370 | ||
0de9a702 | 371 | static void mos7840_handle_new_msr(struct moschip_port *port, __u8 new_msr) |
3f542974 PS |
372 | { |
373 | struct moschip_port *mos7840_port; | |
374 | struct async_icount *icount; | |
375 | mos7840_port = port; | |
376 | icount = &mos7840_port->icount; | |
377 | if (new_msr & | |
378 | (MOS_MSR_DELTA_CTS | MOS_MSR_DELTA_DSR | MOS_MSR_DELTA_RI | | |
379 | MOS_MSR_DELTA_CD)) { | |
380 | icount = &mos7840_port->icount; | |
381 | ||
382 | /* update input line counters */ | |
383 | if (new_msr & MOS_MSR_DELTA_CTS) { | |
384 | icount->cts++; | |
0de9a702 | 385 | smp_wmb(); |
3f542974 PS |
386 | } |
387 | if (new_msr & MOS_MSR_DELTA_DSR) { | |
388 | icount->dsr++; | |
0de9a702 | 389 | smp_wmb(); |
3f542974 PS |
390 | } |
391 | if (new_msr & MOS_MSR_DELTA_CD) { | |
392 | icount->dcd++; | |
0de9a702 | 393 | smp_wmb(); |
3f542974 PS |
394 | } |
395 | if (new_msr & MOS_MSR_DELTA_RI) { | |
396 | icount->rng++; | |
0de9a702 | 397 | smp_wmb(); |
3f542974 PS |
398 | } |
399 | } | |
3f542974 PS |
400 | } |
401 | ||
0de9a702 | 402 | static void mos7840_handle_new_lsr(struct moschip_port *port, __u8 new_lsr) |
3f542974 PS |
403 | { |
404 | struct async_icount *icount; | |
405 | ||
441b62c1 | 406 | dbg("%s - %02x", __func__, new_lsr); |
3f542974 PS |
407 | |
408 | if (new_lsr & SERIAL_LSR_BI) { | |
409 | // | |
410 | // Parity and Framing errors only count if they | |
411 | // occur exclusive of a break being | |
412 | // received. | |
413 | // | |
414 | new_lsr &= (__u8) (SERIAL_LSR_OE | SERIAL_LSR_BI); | |
415 | } | |
416 | ||
417 | /* update input line counters */ | |
418 | icount = &port->icount; | |
419 | if (new_lsr & SERIAL_LSR_BI) { | |
420 | icount->brk++; | |
0de9a702 | 421 | smp_wmb(); |
3f542974 PS |
422 | } |
423 | if (new_lsr & SERIAL_LSR_OE) { | |
424 | icount->overrun++; | |
0de9a702 | 425 | smp_wmb(); |
3f542974 PS |
426 | } |
427 | if (new_lsr & SERIAL_LSR_PE) { | |
428 | icount->parity++; | |
0de9a702 | 429 | smp_wmb(); |
3f542974 PS |
430 | } |
431 | if (new_lsr & SERIAL_LSR_FE) { | |
432 | icount->frame++; | |
0de9a702 | 433 | smp_wmb(); |
3f542974 | 434 | } |
3f542974 PS |
435 | } |
436 | ||
437 | /************************************************************************/ | |
438 | /************************************************************************/ | |
439 | /* U S B C A L L B A C K F U N C T I O N S */ | |
440 | /* U S B C A L L B A C K F U N C T I O N S */ | |
441 | /************************************************************************/ | |
442 | /************************************************************************/ | |
443 | ||
7d12e780 | 444 | static void mos7840_control_callback(struct urb *urb) |
3f542974 PS |
445 | { |
446 | unsigned char *data; | |
447 | struct moschip_port *mos7840_port; | |
448 | __u8 regval = 0x0; | |
0de9a702 | 449 | int result = 0; |
0643c724 | 450 | int status = urb->status; |
3f542974 | 451 | |
cdc97792 | 452 | mos7840_port = urb->context; |
0de9a702 | 453 | |
0643c724 | 454 | switch (status) { |
3f542974 PS |
455 | case 0: |
456 | /* success */ | |
457 | break; | |
458 | case -ECONNRESET: | |
459 | case -ENOENT: | |
460 | case -ESHUTDOWN: | |
461 | /* this urb is terminated, clean up */ | |
441b62c1 | 462 | dbg("%s - urb shutting down with status: %d", __func__, |
0643c724 | 463 | status); |
3f542974 PS |
464 | return; |
465 | default: | |
441b62c1 | 466 | dbg("%s - nonzero urb status received: %d", __func__, |
0643c724 | 467 | status); |
3f542974 PS |
468 | goto exit; |
469 | } | |
470 | ||
441b62c1 HH |
471 | dbg("%s urb buffer size is %d\n", __func__, urb->actual_length); |
472 | dbg("%s mos7840_port->MsrLsr is %d port %d\n", __func__, | |
3f542974 PS |
473 | mos7840_port->MsrLsr, mos7840_port->port_num); |
474 | data = urb->transfer_buffer; | |
475 | regval = (__u8) data[0]; | |
441b62c1 | 476 | dbg("%s data is %x\n", __func__, regval); |
3f542974 PS |
477 | if (mos7840_port->MsrLsr == 0) |
478 | mos7840_handle_new_msr(mos7840_port, regval); | |
479 | else if (mos7840_port->MsrLsr == 1) | |
480 | mos7840_handle_new_lsr(mos7840_port, regval); | |
481 | ||
0de9a702 ON |
482 | exit: |
483 | spin_lock(&mos7840_port->pool_lock); | |
484 | if (!mos7840_port->zombie) | |
485 | result = usb_submit_urb(mos7840_port->int_urb, GFP_ATOMIC); | |
486 | spin_unlock(&mos7840_port->pool_lock); | |
487 | if (result) { | |
488 | dev_err(&urb->dev->dev, | |
489 | "%s - Error %d submitting interrupt urb\n", | |
441b62c1 | 490 | __func__, result); |
0de9a702 | 491 | } |
3f542974 PS |
492 | } |
493 | ||
494 | static int mos7840_get_reg(struct moschip_port *mcs, __u16 Wval, __u16 reg, | |
495 | __u16 * val) | |
496 | { | |
497 | struct usb_device *dev = mcs->port->serial->dev; | |
0de9a702 ON |
498 | struct usb_ctrlrequest *dr = mcs->dr; |
499 | unsigned char *buffer = mcs->ctrl_buf; | |
500 | int ret; | |
3f542974 | 501 | |
3f542974 PS |
502 | dr->bRequestType = MCS_RD_RTYPE; |
503 | dr->bRequest = MCS_RDREQ; | |
504 | dr->wValue = cpu_to_le16(Wval); //0; | |
505 | dr->wIndex = cpu_to_le16(reg); | |
506 | dr->wLength = cpu_to_le16(2); | |
507 | ||
508 | usb_fill_control_urb(mcs->control_urb, dev, usb_rcvctrlpipe(dev, 0), | |
509 | (unsigned char *)dr, buffer, 2, | |
510 | mos7840_control_callback, mcs); | |
511 | mcs->control_urb->transfer_buffer_length = 2; | |
512 | ret = usb_submit_urb(mcs->control_urb, GFP_ATOMIC); | |
513 | return ret; | |
514 | } | |
515 | ||
516 | /***************************************************************************** | |
517 | * mos7840_interrupt_callback | |
518 | * this is the callback function for when we have received data on the | |
519 | * interrupt endpoint. | |
520 | *****************************************************************************/ | |
521 | ||
7d12e780 | 522 | static void mos7840_interrupt_callback(struct urb *urb) |
3f542974 PS |
523 | { |
524 | int result; | |
525 | int length; | |
526 | struct moschip_port *mos7840_port; | |
527 | struct usb_serial *serial; | |
528 | __u16 Data; | |
529 | unsigned char *data; | |
530 | __u8 sp[5], st; | |
0de9a702 ON |
531 | int i, rv = 0; |
532 | __u16 wval, wreg = 0; | |
0643c724 | 533 | int status = urb->status; |
3f542974 PS |
534 | |
535 | dbg("%s", " : Entering\n"); | |
3f542974 | 536 | |
0643c724 | 537 | switch (status) { |
3f542974 PS |
538 | case 0: |
539 | /* success */ | |
540 | break; | |
541 | case -ECONNRESET: | |
542 | case -ENOENT: | |
543 | case -ESHUTDOWN: | |
544 | /* this urb is terminated, clean up */ | |
441b62c1 | 545 | dbg("%s - urb shutting down with status: %d", __func__, |
0643c724 | 546 | status); |
3f542974 PS |
547 | return; |
548 | default: | |
441b62c1 | 549 | dbg("%s - nonzero urb status received: %d", __func__, |
0643c724 | 550 | status); |
3f542974 PS |
551 | goto exit; |
552 | } | |
553 | ||
554 | length = urb->actual_length; | |
555 | data = urb->transfer_buffer; | |
556 | ||
cdc97792 | 557 | serial = urb->context; |
3f542974 PS |
558 | |
559 | /* Moschip get 5 bytes | |
560 | * Byte 1 IIR Port 1 (port.number is 0) | |
561 | * Byte 2 IIR Port 2 (port.number is 1) | |
562 | * Byte 3 IIR Port 3 (port.number is 2) | |
563 | * Byte 4 IIR Port 4 (port.number is 3) | |
564 | * Byte 5 FIFO status for both */ | |
565 | ||
566 | if (length && length > 5) { | |
567 | dbg("%s \n", "Wrong data !!!"); | |
568 | return; | |
569 | } | |
570 | ||
571 | sp[0] = (__u8) data[0]; | |
572 | sp[1] = (__u8) data[1]; | |
573 | sp[2] = (__u8) data[2]; | |
574 | sp[3] = (__u8) data[3]; | |
575 | st = (__u8) data[4]; | |
576 | ||
577 | for (i = 0; i < serial->num_ports; i++) { | |
578 | mos7840_port = mos7840_get_port_private(serial->port[i]); | |
579 | wval = | |
580 | (((__u16) serial->port[i]->number - | |
581 | (__u16) (serial->minor)) + 1) << 8; | |
582 | if (mos7840_port->open) { | |
583 | if (sp[i] & 0x01) { | |
584 | dbg("SP%d No Interrupt !!!\n", i); | |
585 | } else { | |
586 | switch (sp[i] & 0x0f) { | |
587 | case SERIAL_IIR_RLS: | |
588 | dbg("Serial Port %d: Receiver status error or ", i); | |
589 | dbg("address bit detected in 9-bit mode\n"); | |
590 | mos7840_port->MsrLsr = 1; | |
0de9a702 | 591 | wreg = LINE_STATUS_REGISTER; |
3f542974 PS |
592 | break; |
593 | case SERIAL_IIR_MS: | |
594 | dbg("Serial Port %d: Modem status change\n", i); | |
595 | mos7840_port->MsrLsr = 0; | |
0de9a702 | 596 | wreg = MODEM_STATUS_REGISTER; |
3f542974 PS |
597 | break; |
598 | } | |
0de9a702 ON |
599 | spin_lock(&mos7840_port->pool_lock); |
600 | if (!mos7840_port->zombie) { | |
601 | rv = mos7840_get_reg(mos7840_port, wval, wreg, &Data); | |
602 | } else { | |
603 | spin_unlock(&mos7840_port->pool_lock); | |
604 | return; | |
605 | } | |
606 | spin_unlock(&mos7840_port->pool_lock); | |
3f542974 PS |
607 | } |
608 | } | |
609 | } | |
0de9a702 ON |
610 | if (!(rv < 0)) /* the completion handler for the control urb will resubmit */ |
611 | return; | |
612 | exit: | |
3f542974 PS |
613 | result = usb_submit_urb(urb, GFP_ATOMIC); |
614 | if (result) { | |
615 | dev_err(&urb->dev->dev, | |
616 | "%s - Error %d submitting interrupt urb\n", | |
441b62c1 | 617 | __func__, result); |
3f542974 | 618 | } |
3f542974 PS |
619 | } |
620 | ||
621 | static int mos7840_port_paranoia_check(struct usb_serial_port *port, | |
622 | const char *function) | |
623 | { | |
624 | if (!port) { | |
625 | dbg("%s - port == NULL", function); | |
626 | return -1; | |
627 | } | |
628 | if (!port->serial) { | |
629 | dbg("%s - port->serial == NULL", function); | |
630 | return -1; | |
631 | } | |
632 | ||
633 | return 0; | |
634 | } | |
635 | ||
636 | /* Inline functions to check the sanity of a pointer that is passed to us */ | |
637 | static int mos7840_serial_paranoia_check(struct usb_serial *serial, | |
638 | const char *function) | |
639 | { | |
640 | if (!serial) { | |
641 | dbg("%s - serial == NULL", function); | |
642 | return -1; | |
643 | } | |
644 | if (!serial->type) { | |
645 | dbg("%s - serial->type == NULL!", function); | |
646 | return -1; | |
647 | } | |
648 | ||
649 | return 0; | |
650 | } | |
651 | ||
652 | static struct usb_serial *mos7840_get_usb_serial(struct usb_serial_port *port, | |
653 | const char *function) | |
654 | { | |
655 | /* if no port was specified, or it fails a paranoia check */ | |
656 | if (!port || | |
657 | mos7840_port_paranoia_check(port, function) || | |
658 | mos7840_serial_paranoia_check(port->serial, function)) { | |
0de9a702 ON |
659 | /* then say that we don't have a valid usb_serial thing, which will |
660 | * end up genrating -ENODEV return values */ | |
3f542974 PS |
661 | return NULL; |
662 | } | |
663 | ||
664 | return port->serial; | |
665 | } | |
666 | ||
667 | /***************************************************************************** | |
668 | * mos7840_bulk_in_callback | |
669 | * this is the callback function for when we have received data on the | |
670 | * bulk in endpoint. | |
671 | *****************************************************************************/ | |
672 | ||
7d12e780 | 673 | static void mos7840_bulk_in_callback(struct urb *urb) |
3f542974 | 674 | { |
0643c724 | 675 | int retval; |
3f542974 PS |
676 | unsigned char *data; |
677 | struct usb_serial *serial; | |
678 | struct usb_serial_port *port; | |
679 | struct moschip_port *mos7840_port; | |
680 | struct tty_struct *tty; | |
0643c724 | 681 | int status = urb->status; |
3f542974 | 682 | |
0643c724 GKH |
683 | if (status) { |
684 | dbg("nonzero read bulk status received: %d", status); | |
3f542974 PS |
685 | return; |
686 | } | |
687 | ||
cdc97792 | 688 | mos7840_port = urb->context; |
3f542974 PS |
689 | if (!mos7840_port) { |
690 | dbg("%s", "NULL mos7840_port pointer \n"); | |
691 | return; | |
692 | } | |
693 | ||
694 | port = (struct usb_serial_port *)mos7840_port->port; | |
441b62c1 | 695 | if (mos7840_port_paranoia_check(port, __func__)) { |
3f542974 PS |
696 | dbg("%s", "Port Paranoia failed \n"); |
697 | return; | |
698 | } | |
699 | ||
441b62c1 | 700 | serial = mos7840_get_usb_serial(port, __func__); |
3f542974 PS |
701 | if (!serial) { |
702 | dbg("%s\n", "Bad serial pointer "); | |
703 | return; | |
704 | } | |
705 | ||
706 | dbg("%s\n", "Entering... \n"); | |
707 | ||
708 | data = urb->transfer_buffer; | |
709 | ||
710 | dbg("%s", "Entering ........... \n"); | |
711 | ||
712 | if (urb->actual_length) { | |
713 | tty = mos7840_port->port->tty; | |
714 | if (tty) { | |
715 | tty_buffer_request_room(tty, urb->actual_length); | |
716 | tty_insert_flip_string(tty, data, urb->actual_length); | |
717 | dbg(" %s \n", data); | |
718 | tty_flip_buffer_push(tty); | |
719 | } | |
720 | mos7840_port->icount.rx += urb->actual_length; | |
0de9a702 | 721 | smp_wmb(); |
3f542974 PS |
722 | dbg("mos7840_port->icount.rx is %d:\n", |
723 | mos7840_port->icount.rx); | |
724 | } | |
725 | ||
726 | if (!mos7840_port->read_urb) { | |
727 | dbg("%s", "URB KILLED !!!\n"); | |
728 | return; | |
729 | } | |
730 | ||
3f542974 | 731 | |
0de9a702 | 732 | mos7840_port->read_urb->dev = serial->dev; |
3f542974 | 733 | |
0643c724 | 734 | retval = usb_submit_urb(mos7840_port->read_urb, GFP_ATOMIC); |
0de9a702 | 735 | |
0643c724 GKH |
736 | if (retval) { |
737 | dbg(" usb_submit_urb(read bulk) failed, retval = %d", | |
738 | retval); | |
3f542974 PS |
739 | } |
740 | } | |
741 | ||
742 | /***************************************************************************** | |
743 | * mos7840_bulk_out_data_callback | |
744 | * this is the callback function for when we have finished sending serial data | |
745 | * on the bulk out endpoint. | |
746 | *****************************************************************************/ | |
747 | ||
7d12e780 | 748 | static void mos7840_bulk_out_data_callback(struct urb *urb) |
3f542974 PS |
749 | { |
750 | struct moschip_port *mos7840_port; | |
751 | struct tty_struct *tty; | |
0643c724 | 752 | int status = urb->status; |
0de9a702 ON |
753 | int i; |
754 | ||
cdc97792 | 755 | mos7840_port = urb->context; |
0de9a702 ON |
756 | spin_lock(&mos7840_port->pool_lock); |
757 | for (i = 0; i < NUM_URBS; i++) { | |
758 | if (urb == mos7840_port->write_urb_pool[i]) { | |
759 | mos7840_port->busy[i] = 0; | |
760 | break; | |
761 | } | |
762 | } | |
763 | spin_unlock(&mos7840_port->pool_lock); | |
764 | ||
0643c724 GKH |
765 | if (status) { |
766 | dbg("nonzero write bulk status received:%d\n", status); | |
3f542974 PS |
767 | return; |
768 | } | |
769 | ||
441b62c1 | 770 | if (mos7840_port_paranoia_check(mos7840_port->port, __func__)) { |
3f542974 PS |
771 | dbg("%s", "Port Paranoia failed \n"); |
772 | return; | |
773 | } | |
774 | ||
775 | dbg("%s \n", "Entering ........."); | |
776 | ||
777 | tty = mos7840_port->port->tty; | |
778 | ||
b963a844 JS |
779 | if (tty && mos7840_port->open) |
780 | tty_wakeup(tty); | |
3f542974 PS |
781 | |
782 | } | |
783 | ||
784 | /************************************************************************/ | |
785 | /* D R I V E R T T Y I N T E R F A C E F U N C T I O N S */ | |
786 | /************************************************************************/ | |
787 | #ifdef MCSSerialProbe | |
788 | static int mos7840_serial_probe(struct usb_serial *serial, | |
789 | const struct usb_device_id *id) | |
790 | { | |
791 | ||
792 | /*need to implement the mode_reg reading and updating\ | |
793 | structures usb_serial_ device_type\ | |
794 | (i.e num_ports, num_bulkin,bulkout etc) */ | |
795 | /* Also we can update the changes attach */ | |
796 | return 1; | |
797 | } | |
798 | #endif | |
799 | ||
800 | /***************************************************************************** | |
801 | * mos7840_open | |
802 | * this function is called by the tty driver when a port is opened | |
803 | * If successful, we return 0 | |
804 | * Otherwise we return a negative error number. | |
805 | *****************************************************************************/ | |
806 | ||
807 | static int mos7840_open(struct usb_serial_port *port, struct file *filp) | |
808 | { | |
809 | int response; | |
810 | int j; | |
811 | struct usb_serial *serial; | |
812 | struct urb *urb; | |
813 | __u16 Data; | |
814 | int status; | |
815 | struct moschip_port *mos7840_port; | |
0de9a702 | 816 | struct moschip_port *port0; |
3f542974 | 817 | |
441b62c1 | 818 | if (mos7840_port_paranoia_check(port, __func__)) { |
3f542974 PS |
819 | dbg("%s", "Port Paranoia failed \n"); |
820 | return -ENODEV; | |
821 | } | |
822 | ||
3f542974 PS |
823 | serial = port->serial; |
824 | ||
441b62c1 | 825 | if (mos7840_serial_paranoia_check(serial, __func__)) { |
3f542974 PS |
826 | dbg("%s", "Serial Paranoia failed \n"); |
827 | return -ENODEV; | |
828 | } | |
829 | ||
830 | mos7840_port = mos7840_get_port_private(port); | |
0de9a702 | 831 | port0 = mos7840_get_port_private(serial->port[0]); |
3f542974 | 832 | |
0de9a702 | 833 | if (mos7840_port == NULL || port0 == NULL) |
3f542974 PS |
834 | return -ENODEV; |
835 | ||
836 | usb_clear_halt(serial->dev, port->write_urb->pipe); | |
837 | usb_clear_halt(serial->dev, port->read_urb->pipe); | |
0de9a702 | 838 | port0->open_ports++; |
3f542974 PS |
839 | |
840 | /* Initialising the write urb pool */ | |
841 | for (j = 0; j < NUM_URBS; ++j) { | |
0de9a702 | 842 | urb = usb_alloc_urb(0, GFP_KERNEL); |
3f542974 PS |
843 | mos7840_port->write_urb_pool[j] = urb; |
844 | ||
845 | if (urb == NULL) { | |
846 | err("No more urbs???"); | |
847 | continue; | |
848 | } | |
849 | ||
0de9a702 | 850 | urb->transfer_buffer = kmalloc(URB_TRANSFER_BUFFER_SIZE, GFP_KERNEL); |
3f542974 | 851 | if (!urb->transfer_buffer) { |
0de9a702 ON |
852 | usb_free_urb(urb); |
853 | mos7840_port->write_urb_pool[j] = NULL; | |
441b62c1 | 854 | err("%s-out of memory for urb buffers.", __func__); |
3f542974 PS |
855 | continue; |
856 | } | |
857 | } | |
858 | ||
859 | /***************************************************************************** | |
860 | * Initialize MCS7840 -- Write Init values to corresponding Registers | |
861 | * | |
862 | * Register Index | |
863 | * 1 : IER | |
864 | * 2 : FCR | |
865 | * 3 : LCR | |
866 | * 4 : MCR | |
867 | * | |
868 | * 0x08 : SP1/2 Control Reg | |
869 | *****************************************************************************/ | |
870 | ||
871 | //NEED to check the following Block | |
872 | ||
873 | status = 0; | |
874 | Data = 0x0; | |
875 | status = mos7840_get_reg_sync(port, mos7840_port->SpRegOffset, &Data); | |
876 | if (status < 0) { | |
877 | dbg("Reading Spreg failed\n"); | |
878 | return -1; | |
879 | } | |
880 | Data |= 0x80; | |
881 | status = mos7840_set_reg_sync(port, mos7840_port->SpRegOffset, Data); | |
882 | if (status < 0) { | |
883 | dbg("writing Spreg failed\n"); | |
884 | return -1; | |
885 | } | |
886 | ||
887 | Data &= ~0x80; | |
888 | status = mos7840_set_reg_sync(port, mos7840_port->SpRegOffset, Data); | |
889 | if (status < 0) { | |
890 | dbg("writing Spreg failed\n"); | |
891 | return -1; | |
892 | } | |
893 | //End of block to be checked | |
894 | ||
895 | status = 0; | |
896 | Data = 0x0; | |
897 | status = | |
898 | mos7840_get_reg_sync(port, mos7840_port->ControlRegOffset, &Data); | |
899 | if (status < 0) { | |
900 | dbg("Reading Controlreg failed\n"); | |
901 | return -1; | |
902 | } | |
903 | Data |= 0x08; //Driver done bit | |
904 | Data |= 0x20; //rx_disable | |
0de9a702 | 905 | status = mos7840_set_reg_sync(port, mos7840_port->ControlRegOffset, Data); |
3f542974 PS |
906 | if (status < 0) { |
907 | dbg("writing Controlreg failed\n"); | |
908 | return -1; | |
909 | } | |
910 | //do register settings here | |
911 | // Set all regs to the device default values. | |
912 | //////////////////////////////////// | |
913 | // First Disable all interrupts. | |
914 | //////////////////////////////////// | |
915 | ||
916 | Data = 0x00; | |
3f542974 PS |
917 | status = mos7840_set_uart_reg(port, INTERRUPT_ENABLE_REGISTER, Data); |
918 | if (status < 0) { | |
919 | dbg("disableing interrupts failed\n"); | |
920 | return -1; | |
921 | } | |
922 | // Set FIFO_CONTROL_REGISTER to the default value | |
923 | Data = 0x00; | |
3f542974 PS |
924 | status = mos7840_set_uart_reg(port, FIFO_CONTROL_REGISTER, Data); |
925 | if (status < 0) { | |
926 | dbg("Writing FIFO_CONTROL_REGISTER failed\n"); | |
927 | return -1; | |
928 | } | |
929 | ||
930 | Data = 0xcf; | |
3f542974 PS |
931 | status = mos7840_set_uart_reg(port, FIFO_CONTROL_REGISTER, Data); |
932 | if (status < 0) { | |
933 | dbg("Writing FIFO_CONTROL_REGISTER failed\n"); | |
934 | return -1; | |
935 | } | |
936 | ||
937 | Data = 0x03; | |
3f542974 PS |
938 | status = mos7840_set_uart_reg(port, LINE_CONTROL_REGISTER, Data); |
939 | mos7840_port->shadowLCR = Data; | |
940 | ||
941 | Data = 0x0b; | |
3f542974 PS |
942 | status = mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, Data); |
943 | mos7840_port->shadowMCR = Data; | |
944 | ||
945 | Data = 0x00; | |
3f542974 PS |
946 | status = mos7840_get_uart_reg(port, LINE_CONTROL_REGISTER, &Data); |
947 | mos7840_port->shadowLCR = Data; | |
948 | ||
949 | Data |= SERIAL_LCR_DLAB; //data latch enable in LCR 0x80 | |
3f542974 PS |
950 | status = mos7840_set_uart_reg(port, LINE_CONTROL_REGISTER, Data); |
951 | ||
952 | Data = 0x0c; | |
953 | status = 0; | |
954 | status = mos7840_set_uart_reg(port, DIVISOR_LATCH_LSB, Data); | |
955 | ||
956 | Data = 0x0; | |
957 | status = 0; | |
958 | status = mos7840_set_uart_reg(port, DIVISOR_LATCH_MSB, Data); | |
959 | ||
960 | Data = 0x00; | |
961 | status = 0; | |
962 | status = mos7840_get_uart_reg(port, LINE_CONTROL_REGISTER, &Data); | |
963 | ||
964 | Data = Data & ~SERIAL_LCR_DLAB; | |
965 | status = 0; | |
966 | status = mos7840_set_uart_reg(port, LINE_CONTROL_REGISTER, Data); | |
967 | mos7840_port->shadowLCR = Data; | |
968 | ||
969 | //clearing Bulkin and Bulkout Fifo | |
970 | Data = 0x0; | |
971 | status = 0; | |
972 | status = mos7840_get_reg_sync(port, mos7840_port->SpRegOffset, &Data); | |
973 | ||
974 | Data = Data | 0x0c; | |
975 | status = 0; | |
976 | status = mos7840_set_reg_sync(port, mos7840_port->SpRegOffset, Data); | |
977 | ||
978 | Data = Data & ~0x0c; | |
979 | status = 0; | |
980 | status = mos7840_set_reg_sync(port, mos7840_port->SpRegOffset, Data); | |
981 | //Finally enable all interrupts | |
982 | Data = 0x0; | |
983 | Data = 0x0c; | |
984 | status = 0; | |
985 | status = mos7840_set_uart_reg(port, INTERRUPT_ENABLE_REGISTER, Data); | |
986 | ||
987 | //clearing rx_disable | |
988 | Data = 0x0; | |
989 | status = 0; | |
990 | status = | |
991 | mos7840_get_reg_sync(port, mos7840_port->ControlRegOffset, &Data); | |
992 | Data = Data & ~0x20; | |
993 | status = 0; | |
994 | status = | |
995 | mos7840_set_reg_sync(port, mos7840_port->ControlRegOffset, Data); | |
996 | ||
997 | // rx_negate | |
998 | Data = 0x0; | |
999 | status = 0; | |
1000 | status = | |
1001 | mos7840_get_reg_sync(port, mos7840_port->ControlRegOffset, &Data); | |
1002 | Data = Data | 0x10; | |
1003 | status = 0; | |
1004 | status = | |
1005 | mos7840_set_reg_sync(port, mos7840_port->ControlRegOffset, Data); | |
1006 | ||
1007 | /* force low_latency on so that our tty_push actually forces * | |
1008 | * the data through,otherwise it is scheduled, and with * | |
1009 | * high data rates (like with OHCI) data can get lost. */ | |
1010 | ||
1011 | if (port->tty) | |
1012 | port->tty->low_latency = 1; | |
1013 | /* Check to see if we've set up our endpoint info yet * | |
1014 | * (can't set it up in mos7840_startup as the structures * | |
1015 | * were not set up at that time.) */ | |
0de9a702 | 1016 | if (port0->open_ports == 1) { |
3f542974 PS |
1017 | if (serial->port[0]->interrupt_in_buffer == NULL) { |
1018 | ||
1019 | /* set up interrupt urb */ | |
1020 | ||
1021 | usb_fill_int_urb(serial->port[0]->interrupt_in_urb, | |
1022 | serial->dev, | |
1023 | usb_rcvintpipe(serial->dev, | |
1024 | serial->port[0]-> | |
1025 | interrupt_in_endpointAddress), | |
1026 | serial->port[0]->interrupt_in_buffer, | |
1027 | serial->port[0]->interrupt_in_urb-> | |
1028 | transfer_buffer_length, | |
1029 | mos7840_interrupt_callback, | |
1030 | serial, | |
1031 | serial->port[0]->interrupt_in_urb-> | |
1032 | interval); | |
1033 | ||
1034 | /* start interrupt read for mos7840 * | |
1035 | * will continue as long as mos7840 is connected */ | |
1036 | ||
1037 | response = | |
1038 | usb_submit_urb(serial->port[0]->interrupt_in_urb, | |
1039 | GFP_KERNEL); | |
1040 | if (response) { | |
1041 | err("%s - Error %d submitting interrupt urb", | |
441b62c1 | 1042 | __func__, response); |
3f542974 PS |
1043 | } |
1044 | ||
1045 | } | |
1046 | ||
1047 | } | |
1048 | ||
1049 | /* see if we've set up our endpoint info yet * | |
1050 | * (can't set it up in mos7840_startup as the * | |
1051 | * structures were not set up at that time.) */ | |
1052 | ||
1053 | dbg("port number is %d \n", port->number); | |
1054 | dbg("serial number is %d \n", port->serial->minor); | |
1055 | dbg("Bulkin endpoint is %d \n", port->bulk_in_endpointAddress); | |
1056 | dbg("BulkOut endpoint is %d \n", port->bulk_out_endpointAddress); | |
1057 | dbg("Interrupt endpoint is %d \n", port->interrupt_in_endpointAddress); | |
1058 | dbg("port's number in the device is %d\n", mos7840_port->port_num); | |
1059 | mos7840_port->read_urb = port->read_urb; | |
1060 | ||
1061 | /* set up our bulk in urb */ | |
1062 | ||
1063 | usb_fill_bulk_urb(mos7840_port->read_urb, | |
1064 | serial->dev, | |
1065 | usb_rcvbulkpipe(serial->dev, | |
1066 | port->bulk_in_endpointAddress), | |
1067 | port->bulk_in_buffer, | |
1068 | mos7840_port->read_urb->transfer_buffer_length, | |
1069 | mos7840_bulk_in_callback, mos7840_port); | |
1070 | ||
1071 | dbg("mos7840_open: bulkin endpoint is %d\n", | |
1072 | port->bulk_in_endpointAddress); | |
1073 | response = usb_submit_urb(mos7840_port->read_urb, GFP_KERNEL); | |
1074 | if (response) { | |
441b62c1 | 1075 | err("%s - Error %d submitting control urb", __func__, |
3f542974 PS |
1076 | response); |
1077 | } | |
1078 | ||
1079 | /* initialize our wait queues */ | |
1080 | init_waitqueue_head(&mos7840_port->wait_chase); | |
1081 | init_waitqueue_head(&mos7840_port->delta_msr_wait); | |
1082 | ||
1083 | /* initialize our icount structure */ | |
1084 | memset(&(mos7840_port->icount), 0x00, sizeof(mos7840_port->icount)); | |
1085 | ||
1086 | /* initialize our port settings */ | |
1087 | mos7840_port->shadowMCR = MCR_MASTER_IE; /* Must set to enable ints! */ | |
1088 | /* send a open port command */ | |
1089 | mos7840_port->open = 1; | |
1090 | //mos7840_change_port_settings(mos7840_port,old_termios); | |
1091 | mos7840_port->icount.tx = 0; | |
1092 | mos7840_port->icount.rx = 0; | |
1093 | ||
97c4965d | 1094 | dbg("\n\nusb_serial serial:%p mos7840_port:%p\n usb_serial_port port:%p\n\n", serial, mos7840_port, port); |
3f542974 PS |
1095 | |
1096 | return 0; | |
1097 | ||
1098 | } | |
1099 | ||
1100 | /***************************************************************************** | |
1101 | * mos7840_chars_in_buffer | |
1102 | * this function is called by the tty driver when it wants to know how many | |
1103 | * bytes of data we currently have outstanding in the port (data that has | |
1104 | * been written, but hasn't made it out the port yet) | |
1105 | * If successful, we return the number of bytes left to be written in the | |
1106 | * system, | |
1107 | * Otherwise we return a negative error number. | |
1108 | *****************************************************************************/ | |
1109 | ||
1110 | static int mos7840_chars_in_buffer(struct usb_serial_port *port) | |
1111 | { | |
1112 | int i; | |
1113 | int chars = 0; | |
0de9a702 | 1114 | unsigned long flags; |
3f542974 PS |
1115 | struct moschip_port *mos7840_port; |
1116 | ||
1117 | dbg("%s \n", " mos7840_chars_in_buffer:entering ..........."); | |
1118 | ||
441b62c1 | 1119 | if (mos7840_port_paranoia_check(port, __func__)) { |
3f542974 PS |
1120 | dbg("%s", "Invalid port \n"); |
1121 | return -1; | |
1122 | } | |
1123 | ||
1124 | mos7840_port = mos7840_get_port_private(port); | |
1125 | if (mos7840_port == NULL) { | |
1126 | dbg("%s \n", "mos7840_break:leaving ..........."); | |
1127 | return -1; | |
1128 | } | |
1129 | ||
0de9a702 | 1130 | spin_lock_irqsave(&mos7840_port->pool_lock,flags); |
3f542974 | 1131 | for (i = 0; i < NUM_URBS; ++i) { |
0de9a702 | 1132 | if (mos7840_port->busy[i]) { |
3f542974 PS |
1133 | chars += URB_TRANSFER_BUFFER_SIZE; |
1134 | } | |
1135 | } | |
0de9a702 | 1136 | spin_unlock_irqrestore(&mos7840_port->pool_lock,flags); |
441b62c1 | 1137 | dbg("%s - returns %d", __func__, chars); |
0de9a702 | 1138 | return chars; |
3f542974 PS |
1139 | |
1140 | } | |
1141 | ||
1142 | /************************************************************************ | |
1143 | * | |
1144 | * mos7840_block_until_tx_empty | |
1145 | * | |
1146 | * This function will block the close until one of the following: | |
1147 | * 1. TX count are 0 | |
1148 | * 2. The mos7840 has stopped | |
dc0d5c1e | 1149 | * 3. A timeout of 3 seconds without activity has expired |
3f542974 PS |
1150 | * |
1151 | ************************************************************************/ | |
1152 | static void mos7840_block_until_tx_empty(struct moschip_port *mos7840_port) | |
1153 | { | |
1154 | int timeout = HZ / 10; | |
1155 | int wait = 30; | |
1156 | int count; | |
1157 | ||
1158 | while (1) { | |
1159 | ||
1160 | count = mos7840_chars_in_buffer(mos7840_port->port); | |
1161 | ||
1162 | /* Check for Buffer status */ | |
1163 | if (count <= 0) { | |
1164 | return; | |
1165 | } | |
1166 | ||
1167 | /* Block the thread for a while */ | |
1168 | interruptible_sleep_on_timeout(&mos7840_port->wait_chase, | |
1169 | timeout); | |
1170 | ||
1171 | /* No activity.. count down section */ | |
1172 | wait--; | |
1173 | if (wait == 0) { | |
441b62c1 | 1174 | dbg("%s - TIMEOUT", __func__); |
3f542974 PS |
1175 | return; |
1176 | } else { | |
dc0d5c1e | 1177 | /* Reset timeout value back to seconds */ |
3f542974 PS |
1178 | wait = 30; |
1179 | } | |
1180 | } | |
1181 | } | |
1182 | ||
1183 | /***************************************************************************** | |
1184 | * mos7840_close | |
1185 | * this function is called by the tty driver when a port is closed | |
1186 | *****************************************************************************/ | |
1187 | ||
1188 | static void mos7840_close(struct usb_serial_port *port, struct file *filp) | |
1189 | { | |
1190 | struct usb_serial *serial; | |
1191 | struct moschip_port *mos7840_port; | |
0de9a702 | 1192 | struct moschip_port *port0; |
3f542974 PS |
1193 | int j; |
1194 | __u16 Data; | |
1195 | ||
1196 | dbg("%s\n", "mos7840_close:entering..."); | |
1197 | ||
441b62c1 | 1198 | if (mos7840_port_paranoia_check(port, __func__)) { |
3f542974 PS |
1199 | dbg("%s", "Port Paranoia failed \n"); |
1200 | return; | |
1201 | } | |
1202 | ||
441b62c1 | 1203 | serial = mos7840_get_usb_serial(port, __func__); |
3f542974 PS |
1204 | if (!serial) { |
1205 | dbg("%s", "Serial Paranoia failed \n"); | |
1206 | return; | |
1207 | } | |
1208 | ||
1209 | mos7840_port = mos7840_get_port_private(port); | |
0de9a702 | 1210 | port0 = mos7840_get_port_private(serial->port[0]); |
3f542974 | 1211 | |
0de9a702 | 1212 | if (mos7840_port == NULL || port0 == NULL) |
3f542974 | 1213 | return; |
3f542974 PS |
1214 | |
1215 | for (j = 0; j < NUM_URBS; ++j) | |
1216 | usb_kill_urb(mos7840_port->write_urb_pool[j]); | |
1217 | ||
1218 | /* Freeing Write URBs */ | |
1219 | for (j = 0; j < NUM_URBS; ++j) { | |
1220 | if (mos7840_port->write_urb_pool[j]) { | |
1221 | if (mos7840_port->write_urb_pool[j]->transfer_buffer) | |
1222 | kfree(mos7840_port->write_urb_pool[j]-> | |
1223 | transfer_buffer); | |
1224 | ||
1225 | usb_free_urb(mos7840_port->write_urb_pool[j]); | |
1226 | } | |
1227 | } | |
1228 | ||
1229 | if (serial->dev) { | |
1230 | /* flush and block until tx is empty */ | |
1231 | mos7840_block_until_tx_empty(mos7840_port); | |
1232 | } | |
1233 | ||
1234 | /* While closing port, shutdown all bulk read, write * | |
1235 | * and interrupt read if they exists */ | |
1236 | if (serial->dev) { | |
1237 | ||
1238 | if (mos7840_port->write_urb) { | |
1239 | dbg("%s", "Shutdown bulk write\n"); | |
1240 | usb_kill_urb(mos7840_port->write_urb); | |
1241 | } | |
1242 | ||
1243 | if (mos7840_port->read_urb) { | |
1244 | dbg("%s", "Shutdown bulk read\n"); | |
1245 | usb_kill_urb(mos7840_port->read_urb); | |
1246 | } | |
1247 | if ((&mos7840_port->control_urb)) { | |
1248 | dbg("%s", "Shutdown control read\n"); | |
1249 | // usb_kill_urb (mos7840_port->control_urb); | |
1250 | ||
1251 | } | |
1252 | } | |
1253 | // if(mos7840_port->ctrl_buf != NULL) | |
1254 | // kfree(mos7840_port->ctrl_buf); | |
0de9a702 | 1255 | port0->open_ports--; |
3f542974 | 1256 | dbg("mos7840_num_open_ports in close%d:in port%d\n", |
0de9a702 ON |
1257 | port0->open_ports, port->number); |
1258 | if (port0->open_ports == 0) { | |
3f542974 PS |
1259 | if (serial->port[0]->interrupt_in_urb) { |
1260 | dbg("%s", "Shutdown interrupt_in_urb\n"); | |
0de9a702 | 1261 | usb_kill_urb(serial->port[0]->interrupt_in_urb); |
3f542974 PS |
1262 | } |
1263 | } | |
1264 | ||
1265 | if (mos7840_port->write_urb) { | |
1266 | /* if this urb had a transfer buffer already (old tx) free it */ | |
1267 | ||
1268 | if (mos7840_port->write_urb->transfer_buffer != NULL) { | |
1269 | kfree(mos7840_port->write_urb->transfer_buffer); | |
1270 | } | |
1271 | usb_free_urb(mos7840_port->write_urb); | |
1272 | } | |
1273 | ||
1274 | Data = 0x0; | |
1275 | mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, Data); | |
1276 | ||
1277 | Data = 0x00; | |
1278 | mos7840_set_uart_reg(port, INTERRUPT_ENABLE_REGISTER, Data); | |
1279 | ||
1280 | mos7840_port->open = 0; | |
1281 | ||
1282 | dbg("%s \n", "Leaving ............"); | |
1283 | } | |
1284 | ||
1285 | /************************************************************************ | |
1286 | * | |
1287 | * mos7840_block_until_chase_response | |
1288 | * | |
1289 | * This function will block the close until one of the following: | |
1290 | * 1. Response to our Chase comes from mos7840 | |
dc0d5c1e | 1291 | * 2. A timeout of 10 seconds without activity has expired |
3f542974 PS |
1292 | * (1K of mos7840 data @ 2400 baud ==> 4 sec to empty) |
1293 | * | |
1294 | ************************************************************************/ | |
1295 | ||
1296 | static void mos7840_block_until_chase_response(struct moschip_port | |
1297 | *mos7840_port) | |
1298 | { | |
1299 | int timeout = 1 * HZ; | |
1300 | int wait = 10; | |
1301 | int count; | |
1302 | ||
1303 | while (1) { | |
1304 | count = mos7840_chars_in_buffer(mos7840_port->port); | |
1305 | ||
1306 | /* Check for Buffer status */ | |
1307 | if (count <= 0) { | |
1308 | return; | |
1309 | } | |
1310 | ||
1311 | /* Block the thread for a while */ | |
1312 | interruptible_sleep_on_timeout(&mos7840_port->wait_chase, | |
1313 | timeout); | |
1314 | /* No activity.. count down section */ | |
1315 | wait--; | |
1316 | if (wait == 0) { | |
441b62c1 | 1317 | dbg("%s - TIMEOUT", __func__); |
3f542974 PS |
1318 | return; |
1319 | } else { | |
dc0d5c1e | 1320 | /* Reset timeout value back to seconds */ |
3f542974 PS |
1321 | wait = 10; |
1322 | } | |
1323 | } | |
1324 | ||
1325 | } | |
1326 | ||
1327 | /***************************************************************************** | |
1328 | * mos7840_break | |
1329 | * this function sends a break to the port | |
1330 | *****************************************************************************/ | |
1331 | static void mos7840_break(struct usb_serial_port *port, int break_state) | |
1332 | { | |
1333 | unsigned char data; | |
1334 | struct usb_serial *serial; | |
1335 | struct moschip_port *mos7840_port; | |
1336 | ||
1337 | dbg("%s \n", "Entering ..........."); | |
1338 | dbg("mos7840_break: Start\n"); | |
1339 | ||
441b62c1 | 1340 | if (mos7840_port_paranoia_check(port, __func__)) { |
3f542974 PS |
1341 | dbg("%s", "Port Paranoia failed \n"); |
1342 | return; | |
1343 | } | |
1344 | ||
441b62c1 | 1345 | serial = mos7840_get_usb_serial(port, __func__); |
3f542974 PS |
1346 | if (!serial) { |
1347 | dbg("%s", "Serial Paranoia failed \n"); | |
1348 | return; | |
1349 | } | |
1350 | ||
1351 | mos7840_port = mos7840_get_port_private(port); | |
1352 | ||
1353 | if (mos7840_port == NULL) { | |
1354 | return; | |
1355 | } | |
1356 | ||
1357 | if (serial->dev) { | |
1358 | ||
1359 | /* flush and block until tx is empty */ | |
1360 | mos7840_block_until_chase_response(mos7840_port); | |
1361 | } | |
1362 | ||
1363 | if (break_state == -1) { | |
1364 | data = mos7840_port->shadowLCR | LCR_SET_BREAK; | |
1365 | } else { | |
1366 | data = mos7840_port->shadowLCR & ~LCR_SET_BREAK; | |
1367 | } | |
1368 | ||
1369 | mos7840_port->shadowLCR = data; | |
1370 | dbg("mcs7840_break mos7840_port->shadowLCR is %x\n", | |
1371 | mos7840_port->shadowLCR); | |
1372 | mos7840_set_uart_reg(port, LINE_CONTROL_REGISTER, | |
1373 | mos7840_port->shadowLCR); | |
1374 | ||
1375 | return; | |
1376 | } | |
1377 | ||
1378 | /***************************************************************************** | |
1379 | * mos7840_write_room | |
1380 | * this function is called by the tty driver when it wants to know how many | |
1381 | * bytes of data we can accept for a specific port. | |
1382 | * If successful, we return the amount of room that we have for this port | |
1383 | * Otherwise we return a negative error number. | |
1384 | *****************************************************************************/ | |
1385 | ||
1386 | static int mos7840_write_room(struct usb_serial_port *port) | |
1387 | { | |
1388 | int i; | |
1389 | int room = 0; | |
0de9a702 | 1390 | unsigned long flags; |
3f542974 PS |
1391 | struct moschip_port *mos7840_port; |
1392 | ||
1393 | dbg("%s \n", " mos7840_write_room:entering ..........."); | |
1394 | ||
441b62c1 | 1395 | if (mos7840_port_paranoia_check(port, __func__)) { |
3f542974 PS |
1396 | dbg("%s", "Invalid port \n"); |
1397 | dbg("%s \n", " mos7840_write_room:leaving ..........."); | |
1398 | return -1; | |
1399 | } | |
1400 | ||
1401 | mos7840_port = mos7840_get_port_private(port); | |
1402 | if (mos7840_port == NULL) { | |
1403 | dbg("%s \n", "mos7840_break:leaving ..........."); | |
1404 | return -1; | |
1405 | } | |
1406 | ||
0de9a702 | 1407 | spin_lock_irqsave(&mos7840_port->pool_lock, flags); |
3f542974 | 1408 | for (i = 0; i < NUM_URBS; ++i) { |
0de9a702 | 1409 | if (!mos7840_port->busy[i]) { |
3f542974 PS |
1410 | room += URB_TRANSFER_BUFFER_SIZE; |
1411 | } | |
1412 | } | |
0de9a702 | 1413 | spin_unlock_irqrestore(&mos7840_port->pool_lock, flags); |
3f542974 | 1414 | |
0de9a702 | 1415 | room = (room == 0) ? 0 : room - URB_TRANSFER_BUFFER_SIZE + 1; |
441b62c1 | 1416 | dbg("%s - returns %d", __func__, room); |
0de9a702 | 1417 | return room; |
3f542974 PS |
1418 | |
1419 | } | |
1420 | ||
1421 | /***************************************************************************** | |
1422 | * mos7840_write | |
1423 | * this function is called by the tty driver when data should be written to | |
1424 | * the port. | |
1425 | * If successful, we return the number of bytes written, otherwise we | |
1426 | * return a negative error number. | |
1427 | *****************************************************************************/ | |
1428 | ||
1429 | static int mos7840_write(struct usb_serial_port *port, | |
1430 | const unsigned char *data, int count) | |
1431 | { | |
1432 | int status; | |
1433 | int i; | |
1434 | int bytes_sent = 0; | |
1435 | int transfer_size; | |
0de9a702 | 1436 | unsigned long flags; |
3f542974 PS |
1437 | |
1438 | struct moschip_port *mos7840_port; | |
1439 | struct usb_serial *serial; | |
1440 | struct urb *urb; | |
1441 | //__u16 Data; | |
1442 | const unsigned char *current_position = data; | |
1443 | unsigned char *data1; | |
1444 | dbg("%s \n", "entering ..........."); | |
1445 | //dbg("mos7840_write: mos7840_port->shadowLCR is %x\n",mos7840_port->shadowLCR); | |
1446 | ||
1447 | #ifdef NOTMOS7840 | |
1448 | Data = 0x00; | |
1449 | status = 0; | |
1450 | status = mos7840_get_uart_reg(port, LINE_CONTROL_REGISTER, &Data); | |
1451 | mos7840_port->shadowLCR = Data; | |
1452 | dbg("mos7840_write: LINE_CONTROL_REGISTER is %x\n", Data); | |
1453 | dbg("mos7840_write: mos7840_port->shadowLCR is %x\n", | |
1454 | mos7840_port->shadowLCR); | |
1455 | ||
1456 | //Data = 0x03; | |
1457 | //status = mos7840_set_uart_reg(port,LINE_CONTROL_REGISTER,Data); | |
1458 | //mos7840_port->shadowLCR=Data;//Need to add later | |
1459 | ||
1460 | Data |= SERIAL_LCR_DLAB; //data latch enable in LCR 0x80 | |
1461 | status = 0; | |
1462 | status = mos7840_set_uart_reg(port, LINE_CONTROL_REGISTER, Data); | |
1463 | ||
1464 | //Data = 0x0c; | |
1465 | //status = mos7840_set_uart_reg(port,DIVISOR_LATCH_LSB,Data); | |
1466 | Data = 0x00; | |
1467 | status = 0; | |
1468 | status = mos7840_get_uart_reg(port, DIVISOR_LATCH_LSB, &Data); | |
1469 | dbg("mos7840_write:DLL value is %x\n", Data); | |
1470 | ||
1471 | Data = 0x0; | |
1472 | status = 0; | |
1473 | status = mos7840_get_uart_reg(port, DIVISOR_LATCH_MSB, &Data); | |
1474 | dbg("mos7840_write:DLM value is %x\n", Data); | |
1475 | ||
1476 | Data = Data & ~SERIAL_LCR_DLAB; | |
1477 | dbg("mos7840_write: mos7840_port->shadowLCR is %x\n", | |
1478 | mos7840_port->shadowLCR); | |
1479 | status = 0; | |
1480 | status = mos7840_set_uart_reg(port, LINE_CONTROL_REGISTER, Data); | |
1481 | #endif | |
1482 | ||
441b62c1 | 1483 | if (mos7840_port_paranoia_check(port, __func__)) { |
3f542974 PS |
1484 | dbg("%s", "Port Paranoia failed \n"); |
1485 | return -1; | |
1486 | } | |
1487 | ||
1488 | serial = port->serial; | |
441b62c1 | 1489 | if (mos7840_serial_paranoia_check(serial, __func__)) { |
3f542974 PS |
1490 | dbg("%s", "Serial Paranoia failed \n"); |
1491 | return -1; | |
1492 | } | |
1493 | ||
1494 | mos7840_port = mos7840_get_port_private(port); | |
1495 | if (mos7840_port == NULL) { | |
1496 | dbg("%s", "mos7840_port is NULL\n"); | |
1497 | return -1; | |
1498 | } | |
1499 | ||
1500 | /* try to find a free urb in the list */ | |
1501 | urb = NULL; | |
1502 | ||
0de9a702 | 1503 | spin_lock_irqsave(&mos7840_port->pool_lock, flags); |
3f542974 | 1504 | for (i = 0; i < NUM_URBS; ++i) { |
0de9a702 ON |
1505 | if (!mos7840_port->busy[i]) { |
1506 | mos7840_port->busy[i] = 1; | |
3f542974 PS |
1507 | urb = mos7840_port->write_urb_pool[i]; |
1508 | dbg("\nURB:%d", i); | |
1509 | break; | |
1510 | } | |
1511 | } | |
0de9a702 | 1512 | spin_unlock_irqrestore(&mos7840_port->pool_lock, flags); |
3f542974 PS |
1513 | |
1514 | if (urb == NULL) { | |
441b62c1 | 1515 | dbg("%s - no more free urbs", __func__); |
3f542974 PS |
1516 | goto exit; |
1517 | } | |
1518 | ||
1519 | if (urb->transfer_buffer == NULL) { | |
1520 | urb->transfer_buffer = | |
1521 | kmalloc(URB_TRANSFER_BUFFER_SIZE, GFP_KERNEL); | |
1522 | ||
1523 | if (urb->transfer_buffer == NULL) { | |
441b62c1 | 1524 | err("%s no more kernel memory...", __func__); |
3f542974 PS |
1525 | goto exit; |
1526 | } | |
1527 | } | |
1528 | transfer_size = min(count, URB_TRANSFER_BUFFER_SIZE); | |
1529 | ||
97c4965d | 1530 | memcpy(urb->transfer_buffer, current_position, transfer_size); |
3f542974 PS |
1531 | |
1532 | /* fill urb with data and submit */ | |
1533 | usb_fill_bulk_urb(urb, | |
1534 | serial->dev, | |
1535 | usb_sndbulkpipe(serial->dev, | |
1536 | port->bulk_out_endpointAddress), | |
1537 | urb->transfer_buffer, | |
1538 | transfer_size, | |
1539 | mos7840_bulk_out_data_callback, mos7840_port); | |
1540 | ||
1541 | data1 = urb->transfer_buffer; | |
1542 | dbg("\nbulkout endpoint is %d", port->bulk_out_endpointAddress); | |
1543 | ||
1544 | /* send it down the pipe */ | |
1545 | status = usb_submit_urb(urb, GFP_ATOMIC); | |
1546 | ||
1547 | if (status) { | |
0de9a702 | 1548 | mos7840_port->busy[i] = 0; |
3f542974 | 1549 | err("%s - usb_submit_urb(write bulk) failed with status = %d", |
441b62c1 | 1550 | __func__, status); |
3f542974 PS |
1551 | bytes_sent = status; |
1552 | goto exit; | |
1553 | } | |
1554 | bytes_sent = transfer_size; | |
1555 | mos7840_port->icount.tx += transfer_size; | |
0de9a702 | 1556 | smp_wmb(); |
3f542974 PS |
1557 | dbg("mos7840_port->icount.tx is %d:\n", mos7840_port->icount.tx); |
1558 | exit: | |
1559 | ||
1560 | return bytes_sent; | |
1561 | ||
1562 | } | |
1563 | ||
1564 | /***************************************************************************** | |
1565 | * mos7840_throttle | |
1566 | * this function is called by the tty driver when it wants to stop the data | |
1567 | * being read from the port. | |
1568 | *****************************************************************************/ | |
1569 | ||
1570 | static void mos7840_throttle(struct usb_serial_port *port) | |
1571 | { | |
1572 | struct moschip_port *mos7840_port; | |
1573 | struct tty_struct *tty; | |
1574 | int status; | |
1575 | ||
441b62c1 | 1576 | if (mos7840_port_paranoia_check(port, __func__)) { |
3f542974 PS |
1577 | dbg("%s", "Invalid port \n"); |
1578 | return; | |
1579 | } | |
1580 | ||
1581 | dbg("- port %d\n", port->number); | |
1582 | ||
1583 | mos7840_port = mos7840_get_port_private(port); | |
1584 | ||
1585 | if (mos7840_port == NULL) | |
1586 | return; | |
1587 | ||
1588 | if (!mos7840_port->open) { | |
1589 | dbg("%s\n", "port not opened"); | |
1590 | return; | |
1591 | } | |
1592 | ||
1593 | dbg("%s", "Entering .......... \n"); | |
1594 | ||
1595 | tty = port->tty; | |
1596 | if (!tty) { | |
441b62c1 | 1597 | dbg("%s - no tty available", __func__); |
3f542974 PS |
1598 | return; |
1599 | } | |
1600 | ||
1601 | /* if we are implementing XON/XOFF, send the stop character */ | |
1602 | if (I_IXOFF(tty)) { | |
1603 | unsigned char stop_char = STOP_CHAR(tty); | |
1604 | status = mos7840_write(port, &stop_char, 1); | |
1605 | if (status <= 0) { | |
1606 | return; | |
1607 | } | |
1608 | } | |
1609 | ||
1610 | /* if we are implementing RTS/CTS, toggle that line */ | |
1611 | if (tty->termios->c_cflag & CRTSCTS) { | |
1612 | mos7840_port->shadowMCR &= ~MCR_RTS; | |
1613 | status = 0; | |
1614 | status = | |
1615 | mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, | |
1616 | mos7840_port->shadowMCR); | |
1617 | ||
1618 | if (status < 0) { | |
1619 | return; | |
1620 | } | |
1621 | } | |
1622 | ||
1623 | return; | |
1624 | } | |
1625 | ||
1626 | /***************************************************************************** | |
1627 | * mos7840_unthrottle | |
1628 | * this function is called by the tty driver when it wants to resume the data | |
1629 | * being read from the port (called after SerialThrottle is called) | |
1630 | *****************************************************************************/ | |
1631 | static void mos7840_unthrottle(struct usb_serial_port *port) | |
1632 | { | |
1633 | struct tty_struct *tty; | |
1634 | int status; | |
1635 | struct moschip_port *mos7840_port = mos7840_get_port_private(port); | |
1636 | ||
441b62c1 | 1637 | if (mos7840_port_paranoia_check(port, __func__)) { |
3f542974 PS |
1638 | dbg("%s", "Invalid port \n"); |
1639 | return; | |
1640 | } | |
1641 | ||
1642 | if (mos7840_port == NULL) | |
1643 | return; | |
1644 | ||
1645 | if (!mos7840_port->open) { | |
441b62c1 | 1646 | dbg("%s - port not opened", __func__); |
3f542974 PS |
1647 | return; |
1648 | } | |
1649 | ||
1650 | dbg("%s", "Entering .......... \n"); | |
1651 | ||
1652 | tty = port->tty; | |
1653 | if (!tty) { | |
441b62c1 | 1654 | dbg("%s - no tty available", __func__); |
3f542974 PS |
1655 | return; |
1656 | } | |
1657 | ||
1658 | /* if we are implementing XON/XOFF, send the start character */ | |
1659 | if (I_IXOFF(tty)) { | |
1660 | unsigned char start_char = START_CHAR(tty); | |
1661 | status = mos7840_write(port, &start_char, 1); | |
1662 | if (status <= 0) { | |
1663 | return; | |
1664 | } | |
1665 | } | |
1666 | ||
1667 | /* if we are implementing RTS/CTS, toggle that line */ | |
1668 | if (tty->termios->c_cflag & CRTSCTS) { | |
1669 | mos7840_port->shadowMCR |= MCR_RTS; | |
1670 | status = 0; | |
1671 | status = | |
1672 | mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, | |
1673 | mos7840_port->shadowMCR); | |
1674 | if (status < 0) { | |
1675 | return; | |
1676 | } | |
1677 | } | |
1678 | ||
1679 | return; | |
1680 | } | |
1681 | ||
1682 | static int mos7840_tiocmget(struct usb_serial_port *port, struct file *file) | |
1683 | { | |
1684 | struct moschip_port *mos7840_port; | |
1685 | unsigned int result; | |
1686 | __u16 msr; | |
1687 | __u16 mcr; | |
1688 | int status = 0; | |
1689 | mos7840_port = mos7840_get_port_private(port); | |
1690 | ||
441b62c1 | 1691 | dbg("%s - port %d", __func__, port->number); |
3f542974 PS |
1692 | |
1693 | if (mos7840_port == NULL) | |
1694 | return -ENODEV; | |
1695 | ||
1696 | status = mos7840_get_uart_reg(port, MODEM_STATUS_REGISTER, &msr); | |
1697 | status = mos7840_get_uart_reg(port, MODEM_CONTROL_REGISTER, &mcr); | |
1698 | result = ((mcr & MCR_DTR) ? TIOCM_DTR : 0) | |
1699 | | ((mcr & MCR_RTS) ? TIOCM_RTS : 0) | |
1700 | | ((mcr & MCR_LOOPBACK) ? TIOCM_LOOP : 0) | |
1701 | | ((msr & MOS7840_MSR_CTS) ? TIOCM_CTS : 0) | |
1702 | | ((msr & MOS7840_MSR_CD) ? TIOCM_CAR : 0) | |
1703 | | ((msr & MOS7840_MSR_RI) ? TIOCM_RI : 0) | |
1704 | | ((msr & MOS7840_MSR_DSR) ? TIOCM_DSR : 0); | |
1705 | ||
441b62c1 | 1706 | dbg("%s - 0x%04X", __func__, result); |
3f542974 PS |
1707 | |
1708 | return result; | |
1709 | } | |
1710 | ||
1711 | static int mos7840_tiocmset(struct usb_serial_port *port, struct file *file, | |
1712 | unsigned int set, unsigned int clear) | |
1713 | { | |
1714 | struct moschip_port *mos7840_port; | |
1715 | unsigned int mcr; | |
87521c46 | 1716 | int status; |
3f542974 | 1717 | |
441b62c1 | 1718 | dbg("%s - port %d", __func__, port->number); |
3f542974 PS |
1719 | |
1720 | mos7840_port = mos7840_get_port_private(port); | |
1721 | ||
1722 | if (mos7840_port == NULL) | |
1723 | return -ENODEV; | |
1724 | ||
e2984494 | 1725 | /* FIXME: What locks the port registers ? */ |
3f542974 PS |
1726 | mcr = mos7840_port->shadowMCR; |
1727 | if (clear & TIOCM_RTS) | |
1728 | mcr &= ~MCR_RTS; | |
1729 | if (clear & TIOCM_DTR) | |
1730 | mcr &= ~MCR_DTR; | |
1731 | if (clear & TIOCM_LOOP) | |
1732 | mcr &= ~MCR_LOOPBACK; | |
1733 | ||
1734 | if (set & TIOCM_RTS) | |
1735 | mcr |= MCR_RTS; | |
1736 | if (set & TIOCM_DTR) | |
1737 | mcr |= MCR_DTR; | |
1738 | if (set & TIOCM_LOOP) | |
1739 | mcr |= MCR_LOOPBACK; | |
1740 | ||
1741 | mos7840_port->shadowMCR = mcr; | |
1742 | ||
3f542974 PS |
1743 | status = mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, mcr); |
1744 | if (status < 0) { | |
1745 | dbg("setting MODEM_CONTROL_REGISTER Failed\n"); | |
87521c46 | 1746 | return status; |
3f542974 PS |
1747 | } |
1748 | ||
1749 | return 0; | |
1750 | } | |
1751 | ||
1752 | /***************************************************************************** | |
1753 | * mos7840_calc_baud_rate_divisor | |
1754 | * this function calculates the proper baud rate divisor for the specified | |
1755 | * baud rate. | |
1756 | *****************************************************************************/ | |
1757 | static int mos7840_calc_baud_rate_divisor(int baudRate, int *divisor, | |
1758 | __u16 * clk_sel_val) | |
1759 | { | |
1760 | ||
441b62c1 | 1761 | dbg("%s - %d", __func__, baudRate); |
3f542974 PS |
1762 | |
1763 | if (baudRate <= 115200) { | |
1764 | *divisor = 115200 / baudRate; | |
1765 | *clk_sel_val = 0x0; | |
1766 | } | |
1767 | if ((baudRate > 115200) && (baudRate <= 230400)) { | |
1768 | *divisor = 230400 / baudRate; | |
1769 | *clk_sel_val = 0x10; | |
1770 | } else if ((baudRate > 230400) && (baudRate <= 403200)) { | |
1771 | *divisor = 403200 / baudRate; | |
1772 | *clk_sel_val = 0x20; | |
1773 | } else if ((baudRate > 403200) && (baudRate <= 460800)) { | |
1774 | *divisor = 460800 / baudRate; | |
1775 | *clk_sel_val = 0x30; | |
1776 | } else if ((baudRate > 460800) && (baudRate <= 806400)) { | |
1777 | *divisor = 806400 / baudRate; | |
1778 | *clk_sel_val = 0x40; | |
1779 | } else if ((baudRate > 806400) && (baudRate <= 921600)) { | |
1780 | *divisor = 921600 / baudRate; | |
1781 | *clk_sel_val = 0x50; | |
1782 | } else if ((baudRate > 921600) && (baudRate <= 1572864)) { | |
1783 | *divisor = 1572864 / baudRate; | |
1784 | *clk_sel_val = 0x60; | |
1785 | } else if ((baudRate > 1572864) && (baudRate <= 3145728)) { | |
1786 | *divisor = 3145728 / baudRate; | |
1787 | *clk_sel_val = 0x70; | |
1788 | } | |
1789 | return 0; | |
1790 | ||
1791 | #ifdef NOTMCS7840 | |
1792 | ||
1793 | for (i = 0; i < ARRAY_SIZE(mos7840_divisor_table); i++) { | |
1794 | if (mos7840_divisor_table[i].BaudRate == baudrate) { | |
1795 | *divisor = mos7840_divisor_table[i].Divisor; | |
1796 | return 0; | |
1797 | } | |
1798 | } | |
1799 | ||
1800 | /* After trying for all the standard baud rates * | |
1801 | * Try calculating the divisor for this baud rate */ | |
1802 | ||
1803 | if (baudrate > 75 && baudrate < 230400) { | |
1804 | /* get the divisor */ | |
1805 | custom = (__u16) (230400L / baudrate); | |
1806 | ||
1807 | /* Check for round off */ | |
1808 | round1 = (__u16) (2304000L / baudrate); | |
1809 | round = (__u16) (round1 - (custom * 10)); | |
1810 | if (round > 4) { | |
1811 | custom++; | |
1812 | } | |
1813 | *divisor = custom; | |
1814 | ||
1815 | dbg(" Baud %d = %d\n", baudrate, custom); | |
1816 | return 0; | |
1817 | } | |
1818 | ||
1819 | dbg("%s\n", " Baud calculation Failed..."); | |
1820 | return -1; | |
1821 | #endif | |
1822 | } | |
1823 | ||
1824 | /***************************************************************************** | |
1825 | * mos7840_send_cmd_write_baud_rate | |
1826 | * this function sends the proper command to change the baud rate of the | |
1827 | * specified port. | |
1828 | *****************************************************************************/ | |
1829 | ||
1830 | static int mos7840_send_cmd_write_baud_rate(struct moschip_port *mos7840_port, | |
1831 | int baudRate) | |
1832 | { | |
1833 | int divisor = 0; | |
1834 | int status; | |
1835 | __u16 Data; | |
1836 | unsigned char number; | |
1837 | __u16 clk_sel_val; | |
1838 | struct usb_serial_port *port; | |
1839 | ||
1840 | if (mos7840_port == NULL) | |
1841 | return -1; | |
1842 | ||
1843 | port = (struct usb_serial_port *)mos7840_port->port; | |
441b62c1 | 1844 | if (mos7840_port_paranoia_check(port, __func__)) { |
3f542974 PS |
1845 | dbg("%s", "Invalid port \n"); |
1846 | return -1; | |
1847 | } | |
1848 | ||
441b62c1 | 1849 | if (mos7840_serial_paranoia_check(port->serial, __func__)) { |
3f542974 PS |
1850 | dbg("%s", "Invalid Serial \n"); |
1851 | return -1; | |
1852 | } | |
1853 | ||
1854 | dbg("%s", "Entering .......... \n"); | |
1855 | ||
1856 | number = mos7840_port->port->number - mos7840_port->port->serial->minor; | |
1857 | ||
441b62c1 | 1858 | dbg("%s - port = %d, baud = %d", __func__, |
3f542974 PS |
1859 | mos7840_port->port->number, baudRate); |
1860 | //reset clk_uart_sel in spregOffset | |
1861 | if (baudRate > 115200) { | |
1862 | #ifdef HW_flow_control | |
1863 | //NOTE: need to see the pther register to modify | |
1864 | //setting h/w flow control bit to 1; | |
1865 | status = 0; | |
1866 | Data = 0x2b; | |
1867 | mos7840_port->shadowMCR = Data; | |
1868 | status = | |
1869 | mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, Data); | |
1870 | if (status < 0) { | |
1871 | dbg("Writing spreg failed in set_serial_baud\n"); | |
1872 | return -1; | |
1873 | } | |
1874 | #endif | |
1875 | ||
1876 | } else { | |
1877 | #ifdef HW_flow_control | |
1878 | //setting h/w flow control bit to 0; | |
1879 | status = 0; | |
1880 | Data = 0xb; | |
1881 | mos7840_port->shadowMCR = Data; | |
1882 | status = | |
1883 | mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, Data); | |
1884 | if (status < 0) { | |
1885 | dbg("Writing spreg failed in set_serial_baud\n"); | |
1886 | return -1; | |
1887 | } | |
1888 | #endif | |
1889 | ||
1890 | } | |
1891 | ||
1892 | if (1) //baudRate <= 115200) | |
1893 | { | |
1894 | clk_sel_val = 0x0; | |
1895 | Data = 0x0; | |
1896 | status = 0; | |
1897 | status = | |
1898 | mos7840_calc_baud_rate_divisor(baudRate, &divisor, | |
1899 | &clk_sel_val); | |
1900 | status = | |
1901 | mos7840_get_reg_sync(port, mos7840_port->SpRegOffset, | |
1902 | &Data); | |
1903 | if (status < 0) { | |
1904 | dbg("reading spreg failed in set_serial_baud\n"); | |
1905 | return -1; | |
1906 | } | |
1907 | Data = (Data & 0x8f) | clk_sel_val; | |
1908 | status = 0; | |
1909 | status = | |
1910 | mos7840_set_reg_sync(port, mos7840_port->SpRegOffset, Data); | |
1911 | if (status < 0) { | |
1912 | dbg("Writing spreg failed in set_serial_baud\n"); | |
1913 | return -1; | |
1914 | } | |
1915 | /* Calculate the Divisor */ | |
1916 | ||
1917 | if (status) { | |
441b62c1 | 1918 | err("%s - bad baud rate", __func__); |
3f542974 PS |
1919 | dbg("%s\n", "bad baud rate"); |
1920 | return status; | |
1921 | } | |
1922 | /* Enable access to divisor latch */ | |
1923 | Data = mos7840_port->shadowLCR | SERIAL_LCR_DLAB; | |
1924 | mos7840_port->shadowLCR = Data; | |
1925 | mos7840_set_uart_reg(port, LINE_CONTROL_REGISTER, Data); | |
1926 | ||
1927 | /* Write the divisor */ | |
1928 | Data = (unsigned char)(divisor & 0xff); | |
1929 | dbg("set_serial_baud Value to write DLL is %x\n", Data); | |
1930 | mos7840_set_uart_reg(port, DIVISOR_LATCH_LSB, Data); | |
1931 | ||
1932 | Data = (unsigned char)((divisor & 0xff00) >> 8); | |
1933 | dbg("set_serial_baud Value to write DLM is %x\n", Data); | |
1934 | mos7840_set_uart_reg(port, DIVISOR_LATCH_MSB, Data); | |
1935 | ||
1936 | /* Disable access to divisor latch */ | |
1937 | Data = mos7840_port->shadowLCR & ~SERIAL_LCR_DLAB; | |
1938 | mos7840_port->shadowLCR = Data; | |
1939 | mos7840_set_uart_reg(port, LINE_CONTROL_REGISTER, Data); | |
1940 | ||
1941 | } | |
1942 | ||
1943 | return status; | |
1944 | } | |
1945 | ||
1946 | /***************************************************************************** | |
1947 | * mos7840_change_port_settings | |
1948 | * This routine is called to set the UART on the device to match | |
1949 | * the specified new settings. | |
1950 | *****************************************************************************/ | |
1951 | ||
1952 | static void mos7840_change_port_settings(struct moschip_port *mos7840_port, | |
606d099c | 1953 | struct ktermios *old_termios) |
3f542974 PS |
1954 | { |
1955 | struct tty_struct *tty; | |
1956 | int baud; | |
1957 | unsigned cflag; | |
1958 | unsigned iflag; | |
1959 | __u8 lData; | |
1960 | __u8 lParity; | |
1961 | __u8 lStop; | |
1962 | int status; | |
1963 | __u16 Data; | |
1964 | struct usb_serial_port *port; | |
1965 | struct usb_serial *serial; | |
1966 | ||
1967 | if (mos7840_port == NULL) | |
1968 | return; | |
1969 | ||
1970 | port = (struct usb_serial_port *)mos7840_port->port; | |
1971 | ||
441b62c1 | 1972 | if (mos7840_port_paranoia_check(port, __func__)) { |
3f542974 PS |
1973 | dbg("%s", "Invalid port \n"); |
1974 | return; | |
1975 | } | |
1976 | ||
441b62c1 | 1977 | if (mos7840_serial_paranoia_check(port->serial, __func__)) { |
3f542974 PS |
1978 | dbg("%s", "Invalid Serial \n"); |
1979 | return; | |
1980 | } | |
1981 | ||
1982 | serial = port->serial; | |
1983 | ||
441b62c1 | 1984 | dbg("%s - port %d", __func__, mos7840_port->port->number); |
3f542974 PS |
1985 | |
1986 | if (!mos7840_port->open) { | |
441b62c1 | 1987 | dbg("%s - port not opened", __func__); |
3f542974 PS |
1988 | return; |
1989 | } | |
1990 | ||
1991 | tty = mos7840_port->port->tty; | |
1992 | ||
3f542974 PS |
1993 | dbg("%s", "Entering .......... \n"); |
1994 | ||
1995 | lData = LCR_BITS_8; | |
1996 | lStop = LCR_STOP_1; | |
1997 | lParity = LCR_PAR_NONE; | |
1998 | ||
1999 | cflag = tty->termios->c_cflag; | |
2000 | iflag = tty->termios->c_iflag; | |
2001 | ||
2002 | /* Change the number of bits */ | |
2003 | if (cflag & CSIZE) { | |
2004 | switch (cflag & CSIZE) { | |
2005 | case CS5: | |
2006 | lData = LCR_BITS_5; | |
2007 | break; | |
2008 | ||
2009 | case CS6: | |
2010 | lData = LCR_BITS_6; | |
2011 | break; | |
2012 | ||
2013 | case CS7: | |
2014 | lData = LCR_BITS_7; | |
2015 | break; | |
2016 | default: | |
2017 | case CS8: | |
2018 | lData = LCR_BITS_8; | |
2019 | break; | |
2020 | } | |
2021 | } | |
2022 | /* Change the Parity bit */ | |
2023 | if (cflag & PARENB) { | |
2024 | if (cflag & PARODD) { | |
2025 | lParity = LCR_PAR_ODD; | |
441b62c1 | 2026 | dbg("%s - parity = odd", __func__); |
3f542974 PS |
2027 | } else { |
2028 | lParity = LCR_PAR_EVEN; | |
441b62c1 | 2029 | dbg("%s - parity = even", __func__); |
3f542974 PS |
2030 | } |
2031 | ||
2032 | } else { | |
441b62c1 | 2033 | dbg("%s - parity = none", __func__); |
3f542974 PS |
2034 | } |
2035 | ||
2036 | if (cflag & CMSPAR) { | |
2037 | lParity = lParity | 0x20; | |
2038 | } | |
2039 | ||
2040 | /* Change the Stop bit */ | |
2041 | if (cflag & CSTOPB) { | |
2042 | lStop = LCR_STOP_2; | |
441b62c1 | 2043 | dbg("%s - stop bits = 2", __func__); |
3f542974 PS |
2044 | } else { |
2045 | lStop = LCR_STOP_1; | |
441b62c1 | 2046 | dbg("%s - stop bits = 1", __func__); |
3f542974 PS |
2047 | } |
2048 | ||
2049 | /* Update the LCR with the correct value */ | |
2050 | mos7840_port->shadowLCR &= | |
2051 | ~(LCR_BITS_MASK | LCR_STOP_MASK | LCR_PAR_MASK); | |
2052 | mos7840_port->shadowLCR |= (lData | lParity | lStop); | |
2053 | ||
2054 | dbg("mos7840_change_port_settings mos7840_port->shadowLCR is %x\n", | |
2055 | mos7840_port->shadowLCR); | |
2056 | /* Disable Interrupts */ | |
2057 | Data = 0x00; | |
2058 | mos7840_set_uart_reg(port, INTERRUPT_ENABLE_REGISTER, Data); | |
2059 | ||
2060 | Data = 0x00; | |
2061 | mos7840_set_uart_reg(port, FIFO_CONTROL_REGISTER, Data); | |
2062 | ||
2063 | Data = 0xcf; | |
2064 | mos7840_set_uart_reg(port, FIFO_CONTROL_REGISTER, Data); | |
2065 | ||
2066 | /* Send the updated LCR value to the mos7840 */ | |
2067 | Data = mos7840_port->shadowLCR; | |
2068 | ||
2069 | mos7840_set_uart_reg(port, LINE_CONTROL_REGISTER, Data); | |
2070 | ||
2071 | Data = 0x00b; | |
2072 | mos7840_port->shadowMCR = Data; | |
2073 | mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, Data); | |
2074 | Data = 0x00b; | |
2075 | mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, Data); | |
2076 | ||
2077 | /* set up the MCR register and send it to the mos7840 */ | |
2078 | ||
2079 | mos7840_port->shadowMCR = MCR_MASTER_IE; | |
2080 | if (cflag & CBAUD) { | |
2081 | mos7840_port->shadowMCR |= (MCR_DTR | MCR_RTS); | |
2082 | } | |
2083 | ||
2084 | if (cflag & CRTSCTS) { | |
2085 | mos7840_port->shadowMCR |= (MCR_XON_ANY); | |
2086 | ||
2087 | } else { | |
2088 | mos7840_port->shadowMCR &= ~(MCR_XON_ANY); | |
2089 | } | |
2090 | ||
2091 | Data = mos7840_port->shadowMCR; | |
2092 | mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, Data); | |
2093 | ||
2094 | /* Determine divisor based on baud rate */ | |
2095 | baud = tty_get_baud_rate(tty); | |
2096 | ||
2097 | if (!baud) { | |
2098 | /* pick a default, any default... */ | |
2099 | dbg("%s\n", "Picked default baud..."); | |
2100 | baud = 9600; | |
2101 | } | |
2102 | ||
441b62c1 | 2103 | dbg("%s - baud rate = %d", __func__, baud); |
3f542974 PS |
2104 | status = mos7840_send_cmd_write_baud_rate(mos7840_port, baud); |
2105 | ||
2106 | /* Enable Interrupts */ | |
2107 | Data = 0x0c; | |
2108 | mos7840_set_uart_reg(port, INTERRUPT_ENABLE_REGISTER, Data); | |
2109 | ||
2110 | if (mos7840_port->read_urb->status != -EINPROGRESS) { | |
2111 | mos7840_port->read_urb->dev = serial->dev; | |
2112 | ||
2113 | status = usb_submit_urb(mos7840_port->read_urb, GFP_ATOMIC); | |
2114 | ||
2115 | if (status) { | |
2116 | dbg(" usb_submit_urb(read bulk) failed, status = %d", | |
2117 | status); | |
2118 | } | |
2119 | } | |
2120 | wake_up(&mos7840_port->delta_msr_wait); | |
2121 | mos7840_port->delta_msr_cond = 1; | |
2122 | dbg("mos7840_change_port_settings mos7840_port->shadowLCR is End %x\n", | |
2123 | mos7840_port->shadowLCR); | |
2124 | ||
2125 | return; | |
2126 | } | |
2127 | ||
2128 | /***************************************************************************** | |
2129 | * mos7840_set_termios | |
2130 | * this function is called by the tty driver when it wants to change | |
2131 | * the termios structure | |
2132 | *****************************************************************************/ | |
2133 | ||
2134 | static void mos7840_set_termios(struct usb_serial_port *port, | |
606d099c | 2135 | struct ktermios *old_termios) |
3f542974 PS |
2136 | { |
2137 | int status; | |
2138 | unsigned int cflag; | |
2139 | struct usb_serial *serial; | |
2140 | struct moschip_port *mos7840_port; | |
2141 | struct tty_struct *tty; | |
2142 | dbg("mos7840_set_termios: START\n"); | |
441b62c1 | 2143 | if (mos7840_port_paranoia_check(port, __func__)) { |
3f542974 PS |
2144 | dbg("%s", "Invalid port \n"); |
2145 | return; | |
2146 | } | |
2147 | ||
2148 | serial = port->serial; | |
2149 | ||
441b62c1 | 2150 | if (mos7840_serial_paranoia_check(serial, __func__)) { |
3f542974 PS |
2151 | dbg("%s", "Invalid Serial \n"); |
2152 | return; | |
2153 | } | |
2154 | ||
2155 | mos7840_port = mos7840_get_port_private(port); | |
2156 | ||
2157 | if (mos7840_port == NULL) | |
2158 | return; | |
2159 | ||
2160 | tty = port->tty; | |
2161 | ||
3f542974 | 2162 | if (!mos7840_port->open) { |
441b62c1 | 2163 | dbg("%s - port not opened", __func__); |
3f542974 PS |
2164 | return; |
2165 | } | |
2166 | ||
2167 | dbg("%s\n", "setting termios - "); | |
2168 | ||
2169 | cflag = tty->termios->c_cflag; | |
2170 | ||
441b62c1 | 2171 | dbg("%s - clfag %08x iflag %08x", __func__, |
3f542974 | 2172 | tty->termios->c_cflag, RELEVANT_IFLAG(tty->termios->c_iflag)); |
441b62c1 | 2173 | dbg("%s - old clfag %08x old iflag %08x", __func__, |
3d3ddce5 | 2174 | old_termios->c_cflag, RELEVANT_IFLAG(old_termios->c_iflag)); |
441b62c1 | 2175 | dbg("%s - port %d", __func__, port->number); |
3f542974 PS |
2176 | |
2177 | /* change the port settings to the new ones specified */ | |
2178 | ||
2179 | mos7840_change_port_settings(mos7840_port, old_termios); | |
2180 | ||
2181 | if (!mos7840_port->read_urb) { | |
2182 | dbg("%s", "URB KILLED !!!!!\n"); | |
2183 | return; | |
2184 | } | |
2185 | ||
2186 | if (mos7840_port->read_urb->status != -EINPROGRESS) { | |
2187 | mos7840_port->read_urb->dev = serial->dev; | |
2188 | status = usb_submit_urb(mos7840_port->read_urb, GFP_ATOMIC); | |
2189 | if (status) { | |
2190 | dbg(" usb_submit_urb(read bulk) failed, status = %d", | |
2191 | status); | |
2192 | } | |
2193 | } | |
2194 | return; | |
2195 | } | |
2196 | ||
2197 | /***************************************************************************** | |
2198 | * mos7840_get_lsr_info - get line status register info | |
2199 | * | |
2200 | * Purpose: Let user call ioctl() to get info when the UART physically | |
2201 | * is emptied. On bus types like RS485, the transmitter must | |
2202 | * release the bus after transmitting. This must be done when | |
2203 | * the transmit shift register is empty, not be done when the | |
2204 | * transmit holding register is empty. This functionality | |
2205 | * allows an RS485 driver to be written in user space. | |
2206 | *****************************************************************************/ | |
2207 | ||
2208 | static int mos7840_get_lsr_info(struct moschip_port *mos7840_port, | |
97c4965d | 2209 | unsigned int __user *value) |
3f542974 PS |
2210 | { |
2211 | int count; | |
2212 | unsigned int result = 0; | |
2213 | ||
2214 | count = mos7840_chars_in_buffer(mos7840_port->port); | |
2215 | if (count == 0) { | |
441b62c1 | 2216 | dbg("%s -- Empty", __func__); |
3f542974 PS |
2217 | result = TIOCSER_TEMT; |
2218 | } | |
2219 | ||
2220 | if (copy_to_user(value, &result, sizeof(int))) | |
2221 | return -EFAULT; | |
2222 | return 0; | |
2223 | } | |
2224 | ||
3f542974 PS |
2225 | /***************************************************************************** |
2226 | * mos7840_set_modem_info | |
2227 | * function to set modem info | |
2228 | *****************************************************************************/ | |
2229 | ||
2230 | static int mos7840_set_modem_info(struct moschip_port *mos7840_port, | |
97c4965d | 2231 | unsigned int cmd, unsigned int __user *value) |
3f542974 PS |
2232 | { |
2233 | unsigned int mcr; | |
2234 | unsigned int arg; | |
2235 | __u16 Data; | |
2236 | int status; | |
2237 | struct usb_serial_port *port; | |
2238 | ||
2239 | if (mos7840_port == NULL) | |
2240 | return -1; | |
2241 | ||
2242 | port = (struct usb_serial_port *)mos7840_port->port; | |
441b62c1 | 2243 | if (mos7840_port_paranoia_check(port, __func__)) { |
3f542974 PS |
2244 | dbg("%s", "Invalid port \n"); |
2245 | return -1; | |
2246 | } | |
2247 | ||
2248 | mcr = mos7840_port->shadowMCR; | |
2249 | ||
2250 | if (copy_from_user(&arg, value, sizeof(int))) | |
2251 | return -EFAULT; | |
2252 | ||
2253 | switch (cmd) { | |
2254 | case TIOCMBIS: | |
2255 | if (arg & TIOCM_RTS) | |
2256 | mcr |= MCR_RTS; | |
2257 | if (arg & TIOCM_DTR) | |
2258 | mcr |= MCR_RTS; | |
2259 | if (arg & TIOCM_LOOP) | |
2260 | mcr |= MCR_LOOPBACK; | |
2261 | break; | |
2262 | ||
2263 | case TIOCMBIC: | |
2264 | if (arg & TIOCM_RTS) | |
2265 | mcr &= ~MCR_RTS; | |
2266 | if (arg & TIOCM_DTR) | |
2267 | mcr &= ~MCR_RTS; | |
2268 | if (arg & TIOCM_LOOP) | |
2269 | mcr &= ~MCR_LOOPBACK; | |
2270 | break; | |
2271 | ||
2272 | case TIOCMSET: | |
2273 | /* turn off the RTS and DTR and LOOPBACK | |
2274 | * and then only turn on what was asked to */ | |
2275 | mcr &= ~(MCR_RTS | MCR_DTR | MCR_LOOPBACK); | |
2276 | mcr |= ((arg & TIOCM_RTS) ? MCR_RTS : 0); | |
2277 | mcr |= ((arg & TIOCM_DTR) ? MCR_DTR : 0); | |
2278 | mcr |= ((arg & TIOCM_LOOP) ? MCR_LOOPBACK : 0); | |
2279 | break; | |
2280 | } | |
2281 | ||
2282 | mos7840_port->shadowMCR = mcr; | |
2283 | ||
2284 | Data = mos7840_port->shadowMCR; | |
2285 | status = 0; | |
2286 | status = mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, Data); | |
2287 | if (status < 0) { | |
2288 | dbg("setting MODEM_CONTROL_REGISTER Failed\n"); | |
2289 | return -1; | |
2290 | } | |
2291 | ||
2292 | return 0; | |
2293 | } | |
2294 | ||
2295 | /***************************************************************************** | |
2296 | * mos7840_get_modem_info | |
2297 | * function to get modem info | |
2298 | *****************************************************************************/ | |
2299 | ||
2300 | static int mos7840_get_modem_info(struct moschip_port *mos7840_port, | |
97c4965d | 2301 | unsigned int __user *value) |
3f542974 PS |
2302 | { |
2303 | unsigned int result = 0; | |
2304 | __u16 msr; | |
2305 | unsigned int mcr = mos7840_port->shadowMCR; | |
2306 | int status = 0; | |
2307 | status = | |
2308 | mos7840_get_uart_reg(mos7840_port->port, MODEM_STATUS_REGISTER, | |
2309 | &msr); | |
2310 | result = ((mcr & MCR_DTR) ? TIOCM_DTR : 0) /* 0x002 */ | |
2311 | |((mcr & MCR_RTS) ? TIOCM_RTS : 0) /* 0x004 */ | |
2312 | |((msr & MOS7840_MSR_CTS) ? TIOCM_CTS : 0) /* 0x020 */ | |
2313 | |((msr & MOS7840_MSR_CD) ? TIOCM_CAR : 0) /* 0x040 */ | |
2314 | |((msr & MOS7840_MSR_RI) ? TIOCM_RI : 0) /* 0x080 */ | |
2315 | |((msr & MOS7840_MSR_DSR) ? TIOCM_DSR : 0); /* 0x100 */ | |
2316 | ||
441b62c1 | 2317 | dbg("%s -- %x", __func__, result); |
3f542974 PS |
2318 | |
2319 | if (copy_to_user(value, &result, sizeof(int))) | |
2320 | return -EFAULT; | |
2321 | return 0; | |
2322 | } | |
2323 | ||
2324 | /***************************************************************************** | |
2325 | * mos7840_get_serial_info | |
2326 | * function to get information about serial port | |
2327 | *****************************************************************************/ | |
2328 | ||
2329 | static int mos7840_get_serial_info(struct moschip_port *mos7840_port, | |
97c4965d | 2330 | struct serial_struct __user *retinfo) |
3f542974 PS |
2331 | { |
2332 | struct serial_struct tmp; | |
2333 | ||
2334 | if (mos7840_port == NULL) | |
2335 | return -1; | |
2336 | ||
2337 | if (!retinfo) | |
2338 | return -EFAULT; | |
2339 | ||
2340 | memset(&tmp, 0, sizeof(tmp)); | |
2341 | ||
2342 | tmp.type = PORT_16550A; | |
2343 | tmp.line = mos7840_port->port->serial->minor; | |
2344 | tmp.port = mos7840_port->port->number; | |
2345 | tmp.irq = 0; | |
2346 | tmp.flags = ASYNC_SKIP_TEST | ASYNC_AUTO_IRQ; | |
2347 | tmp.xmit_fifo_size = NUM_URBS * URB_TRANSFER_BUFFER_SIZE; | |
2348 | tmp.baud_base = 9600; | |
2349 | tmp.close_delay = 5 * HZ; | |
2350 | tmp.closing_wait = 30 * HZ; | |
2351 | ||
2352 | if (copy_to_user(retinfo, &tmp, sizeof(*retinfo))) | |
2353 | return -EFAULT; | |
2354 | return 0; | |
2355 | } | |
2356 | ||
2357 | /***************************************************************************** | |
2358 | * SerialIoctl | |
2359 | * this function handles any ioctl calls to the driver | |
2360 | *****************************************************************************/ | |
2361 | ||
2362 | static int mos7840_ioctl(struct usb_serial_port *port, struct file *file, | |
2363 | unsigned int cmd, unsigned long arg) | |
2364 | { | |
97c4965d | 2365 | void __user *argp = (void __user *)arg; |
3f542974 PS |
2366 | struct moschip_port *mos7840_port; |
2367 | struct tty_struct *tty; | |
2368 | ||
2369 | struct async_icount cnow; | |
2370 | struct async_icount cprev; | |
2371 | struct serial_icounter_struct icount; | |
2372 | int mosret = 0; | |
3f542974 | 2373 | |
441b62c1 | 2374 | if (mos7840_port_paranoia_check(port, __func__)) { |
3f542974 PS |
2375 | dbg("%s", "Invalid port \n"); |
2376 | return -1; | |
2377 | } | |
2378 | ||
2379 | mos7840_port = mos7840_get_port_private(port); | |
3f542974 PS |
2380 | |
2381 | if (mos7840_port == NULL) | |
2382 | return -1; | |
2383 | ||
ad18027f AB |
2384 | tty = mos7840_port->port->tty; |
2385 | ||
441b62c1 | 2386 | dbg("%s - port %d, cmd = 0x%x", __func__, port->number, cmd); |
3f542974 PS |
2387 | |
2388 | switch (cmd) { | |
2389 | /* return number of bytes available */ | |
2390 | ||
3f542974 | 2391 | case TIOCSERGETLSR: |
441b62c1 | 2392 | dbg("%s (%d) TIOCSERGETLSR", __func__, port->number); |
97c4965d | 2393 | return mos7840_get_lsr_info(mos7840_port, argp); |
3f542974 PS |
2394 | return 0; |
2395 | ||
2396 | case TIOCMBIS: | |
2397 | case TIOCMBIC: | |
2398 | case TIOCMSET: | |
441b62c1 | 2399 | dbg("%s (%d) TIOCMSET/TIOCMBIC/TIOCMSET", __func__, |
3f542974 PS |
2400 | port->number); |
2401 | mosret = | |
97c4965d | 2402 | mos7840_set_modem_info(mos7840_port, cmd, argp); |
3f542974 PS |
2403 | return mosret; |
2404 | ||
2405 | case TIOCMGET: | |
441b62c1 | 2406 | dbg("%s (%d) TIOCMGET", __func__, port->number); |
97c4965d | 2407 | return mos7840_get_modem_info(mos7840_port, argp); |
3f542974 PS |
2408 | |
2409 | case TIOCGSERIAL: | |
441b62c1 | 2410 | dbg("%s (%d) TIOCGSERIAL", __func__, port->number); |
97c4965d | 2411 | return mos7840_get_serial_info(mos7840_port, argp); |
3f542974 PS |
2412 | |
2413 | case TIOCSSERIAL: | |
441b62c1 | 2414 | dbg("%s (%d) TIOCSSERIAL", __func__, port->number); |
3f542974 PS |
2415 | break; |
2416 | ||
2417 | case TIOCMIWAIT: | |
441b62c1 | 2418 | dbg("%s (%d) TIOCMIWAIT", __func__, port->number); |
3f542974 PS |
2419 | cprev = mos7840_port->icount; |
2420 | while (1) { | |
2421 | //interruptible_sleep_on(&mos7840_port->delta_msr_wait); | |
2422 | mos7840_port->delta_msr_cond = 0; | |
2423 | wait_event_interruptible(mos7840_port->delta_msr_wait, | |
2424 | (mos7840_port-> | |
2425 | delta_msr_cond == 1)); | |
2426 | ||
2427 | /* see if a signal did it */ | |
2428 | if (signal_pending(current)) | |
2429 | return -ERESTARTSYS; | |
2430 | cnow = mos7840_port->icount; | |
0de9a702 | 2431 | smp_rmb(); |
3f542974 PS |
2432 | if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr && |
2433 | cnow.dcd == cprev.dcd && cnow.cts == cprev.cts) | |
2434 | return -EIO; /* no change => error */ | |
2435 | if (((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) || | |
2436 | ((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) || | |
2437 | ((arg & TIOCM_CD) && (cnow.dcd != cprev.dcd)) || | |
2438 | ((arg & TIOCM_CTS) && (cnow.cts != cprev.cts))) { | |
2439 | return 0; | |
2440 | } | |
2441 | cprev = cnow; | |
2442 | } | |
2443 | /* NOTREACHED */ | |
2444 | break; | |
2445 | ||
2446 | case TIOCGICOUNT: | |
2447 | cnow = mos7840_port->icount; | |
0de9a702 | 2448 | smp_rmb(); |
3f542974 PS |
2449 | icount.cts = cnow.cts; |
2450 | icount.dsr = cnow.dsr; | |
2451 | icount.rng = cnow.rng; | |
2452 | icount.dcd = cnow.dcd; | |
2453 | icount.rx = cnow.rx; | |
2454 | icount.tx = cnow.tx; | |
2455 | icount.frame = cnow.frame; | |
2456 | icount.overrun = cnow.overrun; | |
2457 | icount.parity = cnow.parity; | |
2458 | icount.brk = cnow.brk; | |
2459 | icount.buf_overrun = cnow.buf_overrun; | |
2460 | ||
441b62c1 | 2461 | dbg("%s (%d) TIOCGICOUNT RX=%d, TX=%d", __func__, |
3f542974 | 2462 | port->number, icount.rx, icount.tx); |
97c4965d | 2463 | if (copy_to_user(argp, &icount, sizeof(icount))) |
3f542974 PS |
2464 | return -EFAULT; |
2465 | return 0; | |
2466 | ||
2467 | case TIOCEXBAUD: | |
2468 | return 0; | |
2469 | default: | |
2470 | break; | |
2471 | } | |
2472 | ||
2473 | return -ENOIOCTLCMD; | |
2474 | } | |
2475 | ||
2476 | static int mos7840_calc_num_ports(struct usb_serial *serial) | |
2477 | { | |
0de9a702 | 2478 | int mos7840_num_ports = 0; |
3f542974 PS |
2479 | |
2480 | dbg("numberofendpoints: %d \n", | |
2481 | (int)serial->interface->cur_altsetting->desc.bNumEndpoints); | |
2482 | dbg("numberofendpoints: %d \n", | |
2483 | (int)serial->interface->altsetting->desc.bNumEndpoints); | |
2484 | if (serial->interface->cur_altsetting->desc.bNumEndpoints == 5) { | |
0de9a702 | 2485 | mos7840_num_ports = serial->num_ports = 2; |
3f542974 | 2486 | } else if (serial->interface->cur_altsetting->desc.bNumEndpoints == 9) { |
0de9a702 ON |
2487 | serial->num_bulk_in = 4; |
2488 | serial->num_bulk_out = 4; | |
2489 | mos7840_num_ports = serial->num_ports = 4; | |
3f542974 PS |
2490 | } |
2491 | ||
2492 | return mos7840_num_ports; | |
2493 | } | |
2494 | ||
2495 | /**************************************************************************** | |
2496 | * mos7840_startup | |
2497 | ****************************************************************************/ | |
2498 | ||
2499 | static int mos7840_startup(struct usb_serial *serial) | |
2500 | { | |
2501 | struct moschip_port *mos7840_port; | |
2502 | struct usb_device *dev; | |
2503 | int i, status; | |
2504 | ||
2505 | __u16 Data; | |
2506 | dbg("%s \n", " mos7840_startup :entering.........."); | |
2507 | ||
2508 | if (!serial) { | |
2509 | dbg("%s\n", "Invalid Handler"); | |
2510 | return -1; | |
2511 | } | |
2512 | ||
2513 | dev = serial->dev; | |
2514 | ||
2515 | dbg("%s\n", "Entering..."); | |
2516 | ||
2517 | /* we set up the pointers to the endpoints in the mos7840_open * | |
2518 | * function, as the structures aren't created yet. */ | |
2519 | ||
2520 | /* set up port private structures */ | |
2521 | for (i = 0; i < serial->num_ports; ++i) { | |
7ac9da10 | 2522 | mos7840_port = kzalloc(sizeof(struct moschip_port), GFP_KERNEL); |
3f542974 | 2523 | if (mos7840_port == NULL) { |
441b62c1 | 2524 | err("%s - Out of memory", __func__); |
0de9a702 ON |
2525 | status = -ENOMEM; |
2526 | i--; /* don't follow NULL pointer cleaning up */ | |
2527 | goto error; | |
3f542974 | 2528 | } |
3f542974 PS |
2529 | |
2530 | /* Initialize all port interrupt end point to port 0 int endpoint * | |
2531 | * Our device has only one interrupt end point comman to all port */ | |
2532 | ||
2533 | mos7840_port->port = serial->port[i]; | |
2534 | mos7840_set_port_private(serial->port[i], mos7840_port); | |
0de9a702 | 2535 | spin_lock_init(&mos7840_port->pool_lock); |
3f542974 PS |
2536 | |
2537 | mos7840_port->port_num = ((serial->port[i]->number - | |
2538 | (serial->port[i]->serial->minor)) + | |
2539 | 1); | |
2540 | ||
2541 | if (mos7840_port->port_num == 1) { | |
2542 | mos7840_port->SpRegOffset = 0x0; | |
2543 | mos7840_port->ControlRegOffset = 0x1; | |
2544 | mos7840_port->DcrRegOffset = 0x4; | |
2545 | } else if ((mos7840_port->port_num == 2) | |
0de9a702 | 2546 | && (serial->num_ports == 4)) { |
3f542974 PS |
2547 | mos7840_port->SpRegOffset = 0x8; |
2548 | mos7840_port->ControlRegOffset = 0x9; | |
2549 | mos7840_port->DcrRegOffset = 0x16; | |
2550 | } else if ((mos7840_port->port_num == 2) | |
0de9a702 | 2551 | && (serial->num_ports == 2)) { |
3f542974 PS |
2552 | mos7840_port->SpRegOffset = 0xa; |
2553 | mos7840_port->ControlRegOffset = 0xb; | |
2554 | mos7840_port->DcrRegOffset = 0x19; | |
2555 | } else if ((mos7840_port->port_num == 3) | |
0de9a702 | 2556 | && (serial->num_ports == 4)) { |
3f542974 PS |
2557 | mos7840_port->SpRegOffset = 0xa; |
2558 | mos7840_port->ControlRegOffset = 0xb; | |
2559 | mos7840_port->DcrRegOffset = 0x19; | |
2560 | } else if ((mos7840_port->port_num == 4) | |
0de9a702 | 2561 | && (serial->num_ports == 4)) { |
3f542974 PS |
2562 | mos7840_port->SpRegOffset = 0xc; |
2563 | mos7840_port->ControlRegOffset = 0xd; | |
2564 | mos7840_port->DcrRegOffset = 0x1c; | |
2565 | } | |
2566 | mos7840_dump_serial_port(mos7840_port); | |
2567 | ||
2568 | mos7840_set_port_private(serial->port[i], mos7840_port); | |
2569 | ||
2570 | //enable rx_disable bit in control register | |
2571 | ||
2572 | status = | |
2573 | mos7840_get_reg_sync(serial->port[i], | |
2574 | mos7840_port->ControlRegOffset, &Data); | |
2575 | if (status < 0) { | |
2576 | dbg("Reading ControlReg failed status-0x%x\n", status); | |
2577 | break; | |
2578 | } else | |
2579 | dbg("ControlReg Reading success val is %x, status%d\n", | |
2580 | Data, status); | |
2581 | Data |= 0x08; //setting driver done bit | |
2582 | Data |= 0x04; //sp1_bit to have cts change reflect in modem status reg | |
2583 | ||
2584 | //Data |= 0x20; //rx_disable bit | |
2585 | status = 0; | |
2586 | status = | |
2587 | mos7840_set_reg_sync(serial->port[i], | |
2588 | mos7840_port->ControlRegOffset, Data); | |
2589 | if (status < 0) { | |
2590 | dbg("Writing ControlReg failed(rx_disable) status-0x%x\n", status); | |
2591 | break; | |
2592 | } else | |
2593 | dbg("ControlReg Writing success(rx_disable) status%d\n", | |
2594 | status); | |
2595 | ||
2596 | //Write default values in DCR (i.e 0x01 in DCR0, 0x05 in DCR2 and 0x24 in DCR3 | |
2597 | Data = 0x01; | |
2598 | status = 0; | |
2599 | status = | |
2600 | mos7840_set_reg_sync(serial->port[i], | |
2601 | (__u16) (mos7840_port->DcrRegOffset + | |
2602 | 0), Data); | |
2603 | if (status < 0) { | |
2604 | dbg("Writing DCR0 failed status-0x%x\n", status); | |
2605 | break; | |
2606 | } else | |
2607 | dbg("DCR0 Writing success status%d\n", status); | |
2608 | ||
2609 | Data = 0x05; | |
2610 | status = 0; | |
2611 | status = | |
2612 | mos7840_set_reg_sync(serial->port[i], | |
2613 | (__u16) (mos7840_port->DcrRegOffset + | |
2614 | 1), Data); | |
2615 | if (status < 0) { | |
2616 | dbg("Writing DCR1 failed status-0x%x\n", status); | |
2617 | break; | |
2618 | } else | |
2619 | dbg("DCR1 Writing success status%d\n", status); | |
2620 | ||
2621 | Data = 0x24; | |
2622 | status = 0; | |
2623 | status = | |
2624 | mos7840_set_reg_sync(serial->port[i], | |
2625 | (__u16) (mos7840_port->DcrRegOffset + | |
2626 | 2), Data); | |
2627 | if (status < 0) { | |
2628 | dbg("Writing DCR2 failed status-0x%x\n", status); | |
2629 | break; | |
2630 | } else | |
2631 | dbg("DCR2 Writing success status%d\n", status); | |
2632 | ||
2633 | // write values in clkstart0x0 and clkmulti 0x20 | |
2634 | Data = 0x0; | |
2635 | status = 0; | |
2636 | status = | |
2637 | mos7840_set_reg_sync(serial->port[i], | |
2638 | CLK_START_VALUE_REGISTER, Data); | |
2639 | if (status < 0) { | |
2640 | dbg("Writing CLK_START_VALUE_REGISTER failed status-0x%x\n", status); | |
2641 | break; | |
2642 | } else | |
2643 | dbg("CLK_START_VALUE_REGISTER Writing success status%d\n", status); | |
2644 | ||
2645 | Data = 0x20; | |
3f542974 PS |
2646 | status = |
2647 | mos7840_set_reg_sync(serial->port[i], CLK_MULTI_REGISTER, | |
2648 | Data); | |
2649 | if (status < 0) { | |
2650 | dbg("Writing CLK_MULTI_REGISTER failed status-0x%x\n", | |
2651 | status); | |
0de9a702 | 2652 | goto error; |
3f542974 PS |
2653 | } else |
2654 | dbg("CLK_MULTI_REGISTER Writing success status%d\n", | |
2655 | status); | |
2656 | ||
2657 | //write value 0x0 to scratchpad register | |
2658 | Data = 0x00; | |
3f542974 PS |
2659 | status = |
2660 | mos7840_set_uart_reg(serial->port[i], SCRATCH_PAD_REGISTER, | |
2661 | Data); | |
2662 | if (status < 0) { | |
2663 | dbg("Writing SCRATCH_PAD_REGISTER failed status-0x%x\n", | |
2664 | status); | |
2665 | break; | |
2666 | } else | |
2667 | dbg("SCRATCH_PAD_REGISTER Writing success status%d\n", | |
2668 | status); | |
2669 | ||
2670 | //Zero Length flag register | |
2671 | if ((mos7840_port->port_num != 1) | |
0de9a702 | 2672 | && (serial->num_ports == 2)) { |
3f542974 PS |
2673 | |
2674 | Data = 0xff; | |
2675 | status = 0; | |
2676 | status = mos7840_set_reg_sync(serial->port[i], | |
2677 | (__u16) (ZLP_REG1 + | |
2678 | ((__u16) | |
2679 | mos7840_port-> | |
2680 | port_num)), | |
2681 | Data); | |
2682 | dbg("ZLIP offset%x\n", | |
2683 | (__u16) (ZLP_REG1 + | |
2684 | ((__u16) mos7840_port->port_num))); | |
2685 | if (status < 0) { | |
2686 | dbg("Writing ZLP_REG%d failed status-0x%x\n", | |
2687 | i + 2, status); | |
2688 | break; | |
2689 | } else | |
2690 | dbg("ZLP_REG%d Writing success status%d\n", | |
2691 | i + 2, status); | |
2692 | } else { | |
2693 | Data = 0xff; | |
2694 | status = 0; | |
2695 | status = mos7840_set_reg_sync(serial->port[i], | |
2696 | (__u16) (ZLP_REG1 + | |
2697 | ((__u16) | |
2698 | mos7840_port-> | |
2699 | port_num) - | |
2700 | 0x1), Data); | |
2701 | dbg("ZLIP offset%x\n", | |
2702 | (__u16) (ZLP_REG1 + | |
2703 | ((__u16) mos7840_port->port_num) - 0x1)); | |
2704 | if (status < 0) { | |
2705 | dbg("Writing ZLP_REG%d failed status-0x%x\n", | |
2706 | i + 1, status); | |
2707 | break; | |
2708 | } else | |
2709 | dbg("ZLP_REG%d Writing success status%d\n", | |
2710 | i + 1, status); | |
2711 | ||
2712 | } | |
0de9a702 | 2713 | mos7840_port->control_urb = usb_alloc_urb(0, GFP_KERNEL); |
3f542974 | 2714 | mos7840_port->ctrl_buf = kmalloc(16, GFP_KERNEL); |
0de9a702 ON |
2715 | mos7840_port->dr = kmalloc(sizeof(struct usb_ctrlrequest), GFP_KERNEL); |
2716 | if (!mos7840_port->control_urb || !mos7840_port->ctrl_buf || !mos7840_port->dr) { | |
2717 | status = -ENOMEM; | |
2718 | goto error; | |
2719 | } | |
3f542974 PS |
2720 | } |
2721 | ||
2722 | //Zero Length flag enable | |
2723 | Data = 0x0f; | |
3f542974 PS |
2724 | status = mos7840_set_reg_sync(serial->port[0], ZLP_REG5, Data); |
2725 | if (status < 0) { | |
2726 | dbg("Writing ZLP_REG5 failed status-0x%x\n", status); | |
7ced46c3 | 2727 | goto error; |
3f542974 PS |
2728 | } else |
2729 | dbg("ZLP_REG5 Writing success status%d\n", status); | |
2730 | ||
2731 | /* setting configuration feature to one */ | |
2732 | usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), | |
97c4965d | 2733 | (__u8) 0x03, 0x00, 0x01, 0x00, NULL, 0x00, 5 * HZ); |
3f542974 | 2734 | return 0; |
0de9a702 ON |
2735 | error: |
2736 | for (/* nothing */; i >= 0; i--) { | |
2737 | mos7840_port = mos7840_get_port_private(serial->port[i]); | |
2738 | ||
2739 | kfree(mos7840_port->dr); | |
2740 | kfree(mos7840_port->ctrl_buf); | |
2741 | usb_free_urb(mos7840_port->control_urb); | |
2742 | kfree(mos7840_port); | |
2743 | serial->port[i] = NULL; | |
2744 | } | |
2745 | return status; | |
3f542974 PS |
2746 | } |
2747 | ||
2748 | /**************************************************************************** | |
2749 | * mos7840_shutdown | |
2750 | * This function is called whenever the device is removed from the usb bus. | |
2751 | ****************************************************************************/ | |
2752 | ||
2753 | static void mos7840_shutdown(struct usb_serial *serial) | |
2754 | { | |
2755 | int i; | |
0de9a702 | 2756 | unsigned long flags; |
3f542974 PS |
2757 | struct moschip_port *mos7840_port; |
2758 | dbg("%s \n", " shutdown :entering.........."); | |
2759 | ||
2760 | if (!serial) { | |
2761 | dbg("%s", "Invalid Handler \n"); | |
2762 | return; | |
2763 | } | |
2764 | ||
2765 | /* check for the ports to be closed,close the ports and disconnect */ | |
2766 | ||
2767 | /* free private structure allocated for serial port * | |
2768 | * stop reads and writes on all ports */ | |
2769 | ||
2770 | for (i = 0; i < serial->num_ports; ++i) { | |
2771 | mos7840_port = mos7840_get_port_private(serial->port[i]); | |
0de9a702 ON |
2772 | spin_lock_irqsave(&mos7840_port->pool_lock, flags); |
2773 | mos7840_port->zombie = 1; | |
2774 | spin_unlock_irqrestore(&mos7840_port->pool_lock, flags); | |
3f542974 | 2775 | usb_kill_urb(mos7840_port->control_urb); |
0de9a702 ON |
2776 | kfree(mos7840_port->ctrl_buf); |
2777 | kfree(mos7840_port->dr); | |
3f542974 PS |
2778 | kfree(mos7840_port); |
2779 | mos7840_set_port_private(serial->port[i], NULL); | |
2780 | } | |
2781 | ||
2782 | dbg("%s\n", "Thank u :: "); | |
2783 | ||
2784 | } | |
2785 | ||
d9b1b787 JH |
2786 | static struct usb_driver io_driver = { |
2787 | .name = "mos7840", | |
2788 | .probe = usb_serial_probe, | |
2789 | .disconnect = usb_serial_disconnect, | |
2790 | .id_table = moschip_id_table_combined, | |
2791 | .no_dynamic_id = 1, | |
2792 | }; | |
2793 | ||
3f542974 PS |
2794 | static struct usb_serial_driver moschip7840_4port_device = { |
2795 | .driver = { | |
2796 | .owner = THIS_MODULE, | |
2797 | .name = "mos7840", | |
2798 | }, | |
2799 | .description = DRIVER_DESC, | |
d9b1b787 | 2800 | .usb_driver = &io_driver, |
3f542974 | 2801 | .id_table = moschip_port_id_table, |
3f542974 | 2802 | .num_ports = 4, |
3f542974 PS |
2803 | .open = mos7840_open, |
2804 | .close = mos7840_close, | |
2805 | .write = mos7840_write, | |
2806 | .write_room = mos7840_write_room, | |
2807 | .chars_in_buffer = mos7840_chars_in_buffer, | |
2808 | .throttle = mos7840_throttle, | |
2809 | .unthrottle = mos7840_unthrottle, | |
2810 | .calc_num_ports = mos7840_calc_num_ports, | |
2811 | #ifdef MCSSerialProbe | |
2812 | .probe = mos7840_serial_probe, | |
2813 | #endif | |
2814 | .ioctl = mos7840_ioctl, | |
2815 | .set_termios = mos7840_set_termios, | |
2816 | .break_ctl = mos7840_break, | |
2817 | .tiocmget = mos7840_tiocmget, | |
2818 | .tiocmset = mos7840_tiocmset, | |
2819 | .attach = mos7840_startup, | |
2820 | .shutdown = mos7840_shutdown, | |
2821 | .read_bulk_callback = mos7840_bulk_in_callback, | |
2822 | .read_int_callback = mos7840_interrupt_callback, | |
2823 | }; | |
2824 | ||
3f542974 PS |
2825 | /**************************************************************************** |
2826 | * moschip7840_init | |
2827 | * This is called by the module subsystem, or on startup to initialize us | |
2828 | ****************************************************************************/ | |
2829 | static int __init moschip7840_init(void) | |
2830 | { | |
2831 | int retval; | |
2832 | ||
2833 | dbg("%s \n", " mos7840_init :entering.........."); | |
2834 | ||
2835 | /* Register with the usb serial */ | |
2836 | retval = usb_serial_register(&moschip7840_4port_device); | |
2837 | ||
2838 | if (retval) | |
2839 | goto failed_port_device_register; | |
2840 | ||
2841 | dbg("%s\n", "Entring..."); | |
2842 | info(DRIVER_DESC " " DRIVER_VERSION); | |
2843 | ||
2844 | /* Register with the usb */ | |
2845 | retval = usb_register(&io_driver); | |
2846 | ||
2847 | if (retval) | |
2848 | goto failed_usb_register; | |
2849 | ||
2850 | if (retval == 0) { | |
2851 | dbg("%s\n", "Leaving..."); | |
2852 | return 0; | |
2853 | } | |
2854 | ||
2855 | failed_usb_register: | |
2856 | usb_serial_deregister(&moschip7840_4port_device); | |
2857 | ||
2858 | failed_port_device_register: | |
2859 | ||
2860 | return retval; | |
2861 | } | |
2862 | ||
2863 | /**************************************************************************** | |
2864 | * moschip7840_exit | |
2865 | * Called when the driver is about to be unloaded. | |
2866 | ****************************************************************************/ | |
2867 | static void __exit moschip7840_exit(void) | |
2868 | { | |
2869 | ||
2870 | dbg("%s \n", " mos7840_exit :entering.........."); | |
2871 | ||
2872 | usb_deregister(&io_driver); | |
2873 | ||
2874 | usb_serial_deregister(&moschip7840_4port_device); | |
2875 | ||
2876 | dbg("%s\n", "Entring..."); | |
2877 | } | |
2878 | ||
2879 | module_init(moschip7840_init); | |
2880 | module_exit(moschip7840_exit); | |
2881 | ||
2882 | /* Module information */ | |
2883 | MODULE_DESCRIPTION(DRIVER_DESC); | |
2884 | MODULE_LICENSE("GPL"); | |
2885 | ||
2886 | module_param(debug, bool, S_IRUGO | S_IWUSR); | |
2887 | MODULE_PARM_DESC(debug, "Debug enabled or not"); |