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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> | |
880af9db | 36 | #include <linux/uaccess.h> |
3f542974 PS |
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 | ||
880af9db AC |
85 | #define WAIT_FOR_EVER (HZ * 0) /* timeout urb is wait for ever */ |
86 | #define MOS_WDR_TIMEOUT (HZ * 5) /* default urb timeout */ | |
3f542974 PS |
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 | ||
880af9db AC |
105 | #define ZLP_REG1 0x3A /* Zero_Flag_Reg1 58 */ |
106 | #define ZLP_REG5 0x3E /* Zero_Flag_Reg5 62 */ | |
3f542974 PS |
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 | ||
880af9db | 145 | /* Serial Port register Address */ |
3f542974 PS |
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 | ||
880af9db | 204 | /* Offsets */ |
3f542974 PS |
205 | __u8 SpRegOffset; |
206 | __u8 ControlRegOffset; | |
207 | __u8 DcrRegOffset; | |
880af9db | 208 | /* for processing control URBS in interrupt context */ |
3f542974 | 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, | |
880af9db | 247 | __u16 *val) |
3f542974 PS |
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; | |
880af9db AC |
272 | /* For the UART control registers, the application number need |
273 | to be Or'ed */ | |
0de9a702 | 274 | if (port->serial->num_ports == 4) { |
880af9db AC |
275 | val |= (((__u16) port->number - |
276 | (__u16) (port->serial->minor)) + 1) << 8; | |
3f542974 PS |
277 | dbg("mos7840_set_uart_reg application number is %x\n", val); |
278 | } else { | |
279 | if (((__u16) port->number - (__u16) (port->serial->minor)) == 0) { | |
880af9db | 280 | val |= (((__u16) port->number - |
3f542974 PS |
281 | (__u16) (port->serial->minor)) + 1) << 8; |
282 | dbg("mos7840_set_uart_reg application number is %x\n", | |
283 | val); | |
284 | } else { | |
285 | val |= | |
286 | (((__u16) port->number - | |
287 | (__u16) (port->serial->minor)) + 2) << 8; | |
288 | dbg("mos7840_set_uart_reg application number is %x\n", | |
289 | val); | |
290 | } | |
291 | } | |
292 | return usb_control_msg(dev, usb_sndctrlpipe(dev, 0), MCS_WRREQ, | |
293 | MCS_WR_RTYPE, val, reg, NULL, 0, | |
294 | MOS_WDR_TIMEOUT); | |
295 | ||
296 | } | |
297 | ||
298 | /* | |
299 | * mos7840_get_uart_reg | |
300 | * To set the Control register by calling usb_fill_control_urb function | |
301 | * by passing usb_rcvctrlpipe function as parameter. | |
302 | */ | |
303 | static int mos7840_get_uart_reg(struct usb_serial_port *port, __u16 reg, | |
880af9db | 304 | __u16 *val) |
3f542974 PS |
305 | { |
306 | struct usb_device *dev = port->serial->dev; | |
307 | int ret = 0; | |
308 | __u16 Wval; | |
309 | ||
880af9db AC |
310 | /* dbg("application number is %4x \n", |
311 | (((__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) { | |
880af9db | 320 | Wval = (((__u16) port->number - |
3f542974 PS |
321 | (__u16) (port->serial->minor)) + 1) << 8; |
322 | dbg("mos7840_get_uart_reg application number is %x\n", | |
323 | Wval); | |
324 | } else { | |
880af9db | 325 | Wval = (((__u16) port->number - |
3f542974 PS |
326 | (__u16) (port->serial->minor)) + 2) << 8; |
327 | dbg("mos7840_get_uart_reg application number is %x\n", | |
328 | Wval); | |
329 | } | |
330 | } | |
331 | ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), MCS_RDREQ, | |
332 | MCS_RD_RTYPE, Wval, reg, val, VENDOR_READ_LENGTH, | |
333 | MOS_WDR_TIMEOUT); | |
334 | *val = (*val) & 0x00ff; | |
335 | return ret; | |
336 | } | |
337 | ||
338 | static void mos7840_dump_serial_port(struct moschip_port *mos7840_port) | |
339 | { | |
340 | ||
341 | dbg("***************************************\n"); | |
342 | dbg("SpRegOffset is %2x\n", mos7840_port->SpRegOffset); | |
343 | dbg("ControlRegOffset is %2x \n", mos7840_port->ControlRegOffset); | |
344 | dbg("DCRRegOffset is %2x \n", mos7840_port->DcrRegOffset); | |
345 | dbg("***************************************\n"); | |
346 | ||
347 | } | |
348 | ||
349 | /************************************************************************/ | |
350 | /************************************************************************/ | |
351 | /* I N T E R F A C E F U N C T I O N S */ | |
352 | /* I N T E R F A C E F U N C T I O N S */ | |
353 | /************************************************************************/ | |
354 | /************************************************************************/ | |
355 | ||
356 | static inline void mos7840_set_port_private(struct usb_serial_port *port, | |
357 | struct moschip_port *data) | |
358 | { | |
359 | usb_set_serial_port_data(port, (void *)data); | |
360 | } | |
361 | ||
362 | static inline struct moschip_port *mos7840_get_port_private(struct | |
363 | usb_serial_port | |
364 | *port) | |
365 | { | |
366 | return (struct moschip_port *)usb_get_serial_port_data(port); | |
367 | } | |
368 | ||
0de9a702 | 369 | static void mos7840_handle_new_msr(struct moschip_port *port, __u8 new_msr) |
3f542974 PS |
370 | { |
371 | struct moschip_port *mos7840_port; | |
372 | struct async_icount *icount; | |
373 | mos7840_port = port; | |
374 | icount = &mos7840_port->icount; | |
375 | if (new_msr & | |
376 | (MOS_MSR_DELTA_CTS | MOS_MSR_DELTA_DSR | MOS_MSR_DELTA_RI | | |
377 | MOS_MSR_DELTA_CD)) { | |
378 | icount = &mos7840_port->icount; | |
379 | ||
380 | /* update input line counters */ | |
381 | if (new_msr & MOS_MSR_DELTA_CTS) { | |
382 | icount->cts++; | |
0de9a702 | 383 | smp_wmb(); |
3f542974 PS |
384 | } |
385 | if (new_msr & MOS_MSR_DELTA_DSR) { | |
386 | icount->dsr++; | |
0de9a702 | 387 | smp_wmb(); |
3f542974 PS |
388 | } |
389 | if (new_msr & MOS_MSR_DELTA_CD) { | |
390 | icount->dcd++; | |
0de9a702 | 391 | smp_wmb(); |
3f542974 PS |
392 | } |
393 | if (new_msr & MOS_MSR_DELTA_RI) { | |
394 | icount->rng++; | |
0de9a702 | 395 | smp_wmb(); |
3f542974 PS |
396 | } |
397 | } | |
3f542974 PS |
398 | } |
399 | ||
0de9a702 | 400 | static void mos7840_handle_new_lsr(struct moschip_port *port, __u8 new_lsr) |
3f542974 PS |
401 | { |
402 | struct async_icount *icount; | |
403 | ||
441b62c1 | 404 | dbg("%s - %02x", __func__, new_lsr); |
3f542974 PS |
405 | |
406 | if (new_lsr & SERIAL_LSR_BI) { | |
880af9db AC |
407 | /* |
408 | * Parity and Framing errors only count if they | |
409 | * occur exclusive of a break being | |
410 | * received. | |
411 | */ | |
3f542974 PS |
412 | new_lsr &= (__u8) (SERIAL_LSR_OE | SERIAL_LSR_BI); |
413 | } | |
414 | ||
415 | /* update input line counters */ | |
416 | icount = &port->icount; | |
417 | if (new_lsr & SERIAL_LSR_BI) { | |
418 | icount->brk++; | |
0de9a702 | 419 | smp_wmb(); |
3f542974 PS |
420 | } |
421 | if (new_lsr & SERIAL_LSR_OE) { | |
422 | icount->overrun++; | |
0de9a702 | 423 | smp_wmb(); |
3f542974 PS |
424 | } |
425 | if (new_lsr & SERIAL_LSR_PE) { | |
426 | icount->parity++; | |
0de9a702 | 427 | smp_wmb(); |
3f542974 PS |
428 | } |
429 | if (new_lsr & SERIAL_LSR_FE) { | |
430 | icount->frame++; | |
0de9a702 | 431 | smp_wmb(); |
3f542974 | 432 | } |
3f542974 PS |
433 | } |
434 | ||
435 | /************************************************************************/ | |
436 | /************************************************************************/ | |
437 | /* U S B C A L L B A C K F U N C T I O N S */ | |
438 | /* U S B C A L L B A C K F U N C T I O N S */ | |
439 | /************************************************************************/ | |
440 | /************************************************************************/ | |
441 | ||
7d12e780 | 442 | static void mos7840_control_callback(struct urb *urb) |
3f542974 PS |
443 | { |
444 | unsigned char *data; | |
445 | struct moschip_port *mos7840_port; | |
446 | __u8 regval = 0x0; | |
0de9a702 | 447 | int result = 0; |
0643c724 | 448 | int status = urb->status; |
3f542974 | 449 | |
cdc97792 | 450 | mos7840_port = urb->context; |
0de9a702 | 451 | |
0643c724 | 452 | switch (status) { |
3f542974 PS |
453 | case 0: |
454 | /* success */ | |
455 | break; | |
456 | case -ECONNRESET: | |
457 | case -ENOENT: | |
458 | case -ESHUTDOWN: | |
459 | /* this urb is terminated, clean up */ | |
441b62c1 | 460 | dbg("%s - urb shutting down with status: %d", __func__, |
0643c724 | 461 | status); |
3f542974 PS |
462 | return; |
463 | default: | |
441b62c1 | 464 | dbg("%s - nonzero urb status received: %d", __func__, |
0643c724 | 465 | status); |
3f542974 PS |
466 | goto exit; |
467 | } | |
468 | ||
441b62c1 HH |
469 | dbg("%s urb buffer size is %d\n", __func__, urb->actual_length); |
470 | dbg("%s mos7840_port->MsrLsr is %d port %d\n", __func__, | |
3f542974 PS |
471 | mos7840_port->MsrLsr, mos7840_port->port_num); |
472 | data = urb->transfer_buffer; | |
473 | regval = (__u8) data[0]; | |
441b62c1 | 474 | dbg("%s data is %x\n", __func__, regval); |
3f542974 PS |
475 | if (mos7840_port->MsrLsr == 0) |
476 | mos7840_handle_new_msr(mos7840_port, regval); | |
477 | else if (mos7840_port->MsrLsr == 1) | |
478 | mos7840_handle_new_lsr(mos7840_port, regval); | |
479 | ||
0de9a702 ON |
480 | exit: |
481 | spin_lock(&mos7840_port->pool_lock); | |
482 | if (!mos7840_port->zombie) | |
483 | result = usb_submit_urb(mos7840_port->int_urb, GFP_ATOMIC); | |
484 | spin_unlock(&mos7840_port->pool_lock); | |
485 | if (result) { | |
486 | dev_err(&urb->dev->dev, | |
487 | "%s - Error %d submitting interrupt urb\n", | |
441b62c1 | 488 | __func__, result); |
0de9a702 | 489 | } |
3f542974 PS |
490 | } |
491 | ||
492 | static int mos7840_get_reg(struct moschip_port *mcs, __u16 Wval, __u16 reg, | |
880af9db | 493 | __u16 *val) |
3f542974 PS |
494 | { |
495 | struct usb_device *dev = mcs->port->serial->dev; | |
0de9a702 ON |
496 | struct usb_ctrlrequest *dr = mcs->dr; |
497 | unsigned char *buffer = mcs->ctrl_buf; | |
498 | int ret; | |
3f542974 | 499 | |
3f542974 PS |
500 | dr->bRequestType = MCS_RD_RTYPE; |
501 | dr->bRequest = MCS_RDREQ; | |
880af9db | 502 | dr->wValue = cpu_to_le16(Wval); /* 0 */ |
3f542974 PS |
503 | dr->wIndex = cpu_to_le16(reg); |
504 | dr->wLength = cpu_to_le16(2); | |
505 | ||
506 | usb_fill_control_urb(mcs->control_urb, dev, usb_rcvctrlpipe(dev, 0), | |
507 | (unsigned char *)dr, buffer, 2, | |
508 | mos7840_control_callback, mcs); | |
509 | mcs->control_urb->transfer_buffer_length = 2; | |
510 | ret = usb_submit_urb(mcs->control_urb, GFP_ATOMIC); | |
511 | return ret; | |
512 | } | |
513 | ||
514 | /***************************************************************************** | |
515 | * mos7840_interrupt_callback | |
516 | * this is the callback function for when we have received data on the | |
517 | * interrupt endpoint. | |
518 | *****************************************************************************/ | |
519 | ||
7d12e780 | 520 | static void mos7840_interrupt_callback(struct urb *urb) |
3f542974 PS |
521 | { |
522 | int result; | |
523 | int length; | |
524 | struct moschip_port *mos7840_port; | |
525 | struct usb_serial *serial; | |
526 | __u16 Data; | |
527 | unsigned char *data; | |
528 | __u8 sp[5], st; | |
0de9a702 ON |
529 | int i, rv = 0; |
530 | __u16 wval, wreg = 0; | |
0643c724 | 531 | int status = urb->status; |
3f542974 PS |
532 | |
533 | dbg("%s", " : Entering\n"); | |
3f542974 | 534 | |
0643c724 | 535 | switch (status) { |
3f542974 PS |
536 | case 0: |
537 | /* success */ | |
538 | break; | |
539 | case -ECONNRESET: | |
540 | case -ENOENT: | |
541 | case -ESHUTDOWN: | |
542 | /* this urb is terminated, clean up */ | |
441b62c1 | 543 | dbg("%s - urb shutting down with status: %d", __func__, |
0643c724 | 544 | status); |
3f542974 PS |
545 | return; |
546 | default: | |
441b62c1 | 547 | dbg("%s - nonzero urb status received: %d", __func__, |
0643c724 | 548 | status); |
3f542974 PS |
549 | goto exit; |
550 | } | |
551 | ||
552 | length = urb->actual_length; | |
553 | data = urb->transfer_buffer; | |
554 | ||
cdc97792 | 555 | serial = urb->context; |
3f542974 PS |
556 | |
557 | /* Moschip get 5 bytes | |
558 | * Byte 1 IIR Port 1 (port.number is 0) | |
559 | * Byte 2 IIR Port 2 (port.number is 1) | |
560 | * Byte 3 IIR Port 3 (port.number is 2) | |
561 | * Byte 4 IIR Port 4 (port.number is 3) | |
562 | * Byte 5 FIFO status for both */ | |
563 | ||
564 | if (length && length > 5) { | |
565 | dbg("%s \n", "Wrong data !!!"); | |
566 | return; | |
567 | } | |
568 | ||
569 | sp[0] = (__u8) data[0]; | |
570 | sp[1] = (__u8) data[1]; | |
571 | sp[2] = (__u8) data[2]; | |
572 | sp[3] = (__u8) data[3]; | |
573 | st = (__u8) data[4]; | |
574 | ||
575 | for (i = 0; i < serial->num_ports; i++) { | |
576 | mos7840_port = mos7840_get_port_private(serial->port[i]); | |
577 | wval = | |
578 | (((__u16) serial->port[i]->number - | |
579 | (__u16) (serial->minor)) + 1) << 8; | |
580 | if (mos7840_port->open) { | |
581 | if (sp[i] & 0x01) { | |
582 | dbg("SP%d No Interrupt !!!\n", i); | |
583 | } else { | |
584 | switch (sp[i] & 0x0f) { | |
585 | case SERIAL_IIR_RLS: | |
586 | dbg("Serial Port %d: Receiver status error or ", i); | |
587 | dbg("address bit detected in 9-bit mode\n"); | |
588 | mos7840_port->MsrLsr = 1; | |
0de9a702 | 589 | wreg = LINE_STATUS_REGISTER; |
3f542974 PS |
590 | break; |
591 | case SERIAL_IIR_MS: | |
592 | dbg("Serial Port %d: Modem status change\n", i); | |
593 | mos7840_port->MsrLsr = 0; | |
0de9a702 | 594 | wreg = MODEM_STATUS_REGISTER; |
3f542974 PS |
595 | break; |
596 | } | |
0de9a702 ON |
597 | spin_lock(&mos7840_port->pool_lock); |
598 | if (!mos7840_port->zombie) { | |
599 | rv = mos7840_get_reg(mos7840_port, wval, wreg, &Data); | |
600 | } else { | |
601 | spin_unlock(&mos7840_port->pool_lock); | |
602 | return; | |
603 | } | |
604 | spin_unlock(&mos7840_port->pool_lock); | |
3f542974 PS |
605 | } |
606 | } | |
607 | } | |
880af9db AC |
608 | if (!(rv < 0)) |
609 | /* the completion handler for the control urb will resubmit */ | |
0de9a702 ON |
610 | return; |
611 | exit: | |
3f542974 PS |
612 | result = usb_submit_urb(urb, GFP_ATOMIC); |
613 | if (result) { | |
614 | dev_err(&urb->dev->dev, | |
615 | "%s - Error %d submitting interrupt urb\n", | |
441b62c1 | 616 | __func__, result); |
3f542974 | 617 | } |
3f542974 PS |
618 | } |
619 | ||
620 | static int mos7840_port_paranoia_check(struct usb_serial_port *port, | |
621 | const char *function) | |
622 | { | |
623 | if (!port) { | |
624 | dbg("%s - port == NULL", function); | |
625 | return -1; | |
626 | } | |
627 | if (!port->serial) { | |
628 | dbg("%s - port->serial == NULL", function); | |
629 | return -1; | |
630 | } | |
631 | ||
632 | return 0; | |
633 | } | |
634 | ||
635 | /* Inline functions to check the sanity of a pointer that is passed to us */ | |
636 | static int mos7840_serial_paranoia_check(struct usb_serial *serial, | |
637 | const char *function) | |
638 | { | |
639 | if (!serial) { | |
640 | dbg("%s - serial == NULL", function); | |
641 | return -1; | |
642 | } | |
643 | if (!serial->type) { | |
644 | dbg("%s - serial->type == NULL!", function); | |
645 | return -1; | |
646 | } | |
647 | ||
648 | return 0; | |
649 | } | |
650 | ||
651 | static struct usb_serial *mos7840_get_usb_serial(struct usb_serial_port *port, | |
652 | const char *function) | |
653 | { | |
654 | /* if no port was specified, or it fails a paranoia check */ | |
655 | if (!port || | |
656 | mos7840_port_paranoia_check(port, function) || | |
657 | mos7840_serial_paranoia_check(port->serial, function)) { | |
880af9db AC |
658 | /* then say that we don't have a valid usb_serial thing, |
659 | * which will end up genrating -ENODEV return values */ | |
3f542974 PS |
660 | return NULL; |
661 | } | |
662 | ||
663 | return port->serial; | |
664 | } | |
665 | ||
666 | /***************************************************************************** | |
667 | * mos7840_bulk_in_callback | |
668 | * this is the callback function for when we have received data on the | |
669 | * bulk in endpoint. | |
670 | *****************************************************************************/ | |
671 | ||
7d12e780 | 672 | static void mos7840_bulk_in_callback(struct urb *urb) |
3f542974 | 673 | { |
0643c724 | 674 | int retval; |
3f542974 PS |
675 | unsigned char *data; |
676 | struct usb_serial *serial; | |
677 | struct usb_serial_port *port; | |
678 | struct moschip_port *mos7840_port; | |
679 | struct tty_struct *tty; | |
0643c724 | 680 | int status = urb->status; |
3f542974 | 681 | |
0643c724 GKH |
682 | if (status) { |
683 | dbg("nonzero read bulk status received: %d", status); | |
3f542974 PS |
684 | return; |
685 | } | |
686 | ||
cdc97792 | 687 | mos7840_port = urb->context; |
3f542974 PS |
688 | if (!mos7840_port) { |
689 | dbg("%s", "NULL mos7840_port pointer \n"); | |
690 | return; | |
691 | } | |
692 | ||
693 | port = (struct usb_serial_port *)mos7840_port->port; | |
441b62c1 | 694 | if (mos7840_port_paranoia_check(port, __func__)) { |
3f542974 PS |
695 | dbg("%s", "Port Paranoia failed \n"); |
696 | return; | |
697 | } | |
698 | ||
441b62c1 | 699 | serial = mos7840_get_usb_serial(port, __func__); |
3f542974 PS |
700 | if (!serial) { |
701 | dbg("%s\n", "Bad serial pointer "); | |
702 | return; | |
703 | } | |
704 | ||
705 | dbg("%s\n", "Entering... \n"); | |
706 | ||
707 | data = urb->transfer_buffer; | |
708 | ||
709 | dbg("%s", "Entering ........... \n"); | |
710 | ||
711 | if (urb->actual_length) { | |
4a90f09b | 712 | tty = tty_port_tty_get(&mos7840_port->port->port); |
3f542974 PS |
713 | if (tty) { |
714 | tty_buffer_request_room(tty, urb->actual_length); | |
715 | tty_insert_flip_string(tty, data, urb->actual_length); | |
716 | dbg(" %s \n", data); | |
717 | tty_flip_buffer_push(tty); | |
4a90f09b | 718 | tty_kref_put(tty); |
3f542974 PS |
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 | |
880af9db AC |
744 | * this is the callback function for when we have finished sending |
745 | * serial data on the bulk out endpoint. | |
3f542974 PS |
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 | ||
4a90f09b | 777 | tty = tty_port_tty_get(&mos7840_port->port->port); |
b963a844 JS |
778 | if (tty && mos7840_port->open) |
779 | tty_wakeup(tty); | |
4a90f09b | 780 | tty_kref_put(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 | ||
95da310e AC |
807 | static int mos7840_open(struct tty_struct *tty, |
808 | struct usb_serial_port *port, struct file *filp) | |
3f542974 PS |
809 | { |
810 | int response; | |
811 | int j; | |
812 | struct usb_serial *serial; | |
813 | struct urb *urb; | |
814 | __u16 Data; | |
815 | int status; | |
816 | struct moschip_port *mos7840_port; | |
0de9a702 | 817 | struct moschip_port *port0; |
3f542974 | 818 | |
441b62c1 | 819 | if (mos7840_port_paranoia_check(port, __func__)) { |
3f542974 PS |
820 | dbg("%s", "Port Paranoia failed \n"); |
821 | return -ENODEV; | |
822 | } | |
823 | ||
3f542974 PS |
824 | serial = port->serial; |
825 | ||
441b62c1 | 826 | if (mos7840_serial_paranoia_check(serial, __func__)) { |
3f542974 PS |
827 | dbg("%s", "Serial Paranoia failed \n"); |
828 | return -ENODEV; | |
829 | } | |
830 | ||
831 | mos7840_port = mos7840_get_port_private(port); | |
0de9a702 | 832 | port0 = mos7840_get_port_private(serial->port[0]); |
3f542974 | 833 | |
0de9a702 | 834 | if (mos7840_port == NULL || port0 == NULL) |
3f542974 PS |
835 | return -ENODEV; |
836 | ||
837 | usb_clear_halt(serial->dev, port->write_urb->pipe); | |
838 | usb_clear_halt(serial->dev, port->read_urb->pipe); | |
0de9a702 | 839 | port0->open_ports++; |
3f542974 PS |
840 | |
841 | /* Initialising the write urb pool */ | |
842 | for (j = 0; j < NUM_URBS; ++j) { | |
0de9a702 | 843 | urb = usb_alloc_urb(0, GFP_KERNEL); |
3f542974 PS |
844 | mos7840_port->write_urb_pool[j] = urb; |
845 | ||
846 | if (urb == NULL) { | |
194343d9 | 847 | dev_err(&port->dev, "No more urbs???\n"); |
3f542974 PS |
848 | continue; |
849 | } | |
850 | ||
880af9db AC |
851 | urb->transfer_buffer = kmalloc(URB_TRANSFER_BUFFER_SIZE, |
852 | GFP_KERNEL); | |
3f542974 | 853 | if (!urb->transfer_buffer) { |
0de9a702 ON |
854 | usb_free_urb(urb); |
855 | mos7840_port->write_urb_pool[j] = NULL; | |
194343d9 GKH |
856 | dev_err(&port->dev, |
857 | "%s-out of memory for urb buffers.\n", | |
858 | __func__); | |
3f542974 PS |
859 | continue; |
860 | } | |
861 | } | |
862 | ||
863 | /***************************************************************************** | |
864 | * Initialize MCS7840 -- Write Init values to corresponding Registers | |
865 | * | |
866 | * Register Index | |
867 | * 1 : IER | |
868 | * 2 : FCR | |
869 | * 3 : LCR | |
870 | * 4 : MCR | |
871 | * | |
872 | * 0x08 : SP1/2 Control Reg | |
873 | *****************************************************************************/ | |
874 | ||
880af9db | 875 | /* NEED to check the following Block */ |
3f542974 | 876 | |
3f542974 PS |
877 | Data = 0x0; |
878 | status = mos7840_get_reg_sync(port, mos7840_port->SpRegOffset, &Data); | |
879 | if (status < 0) { | |
880 | dbg("Reading Spreg failed\n"); | |
881 | return -1; | |
882 | } | |
883 | Data |= 0x80; | |
884 | status = mos7840_set_reg_sync(port, mos7840_port->SpRegOffset, Data); | |
885 | if (status < 0) { | |
886 | dbg("writing Spreg failed\n"); | |
887 | return -1; | |
888 | } | |
889 | ||
890 | Data &= ~0x80; | |
891 | status = mos7840_set_reg_sync(port, mos7840_port->SpRegOffset, Data); | |
892 | if (status < 0) { | |
893 | dbg("writing Spreg failed\n"); | |
894 | return -1; | |
895 | } | |
880af9db | 896 | /* End of block to be checked */ |
3f542974 | 897 | |
3f542974 | 898 | Data = 0x0; |
880af9db AC |
899 | status = mos7840_get_reg_sync(port, mos7840_port->ControlRegOffset, |
900 | &Data); | |
3f542974 PS |
901 | if (status < 0) { |
902 | dbg("Reading Controlreg failed\n"); | |
903 | return -1; | |
904 | } | |
880af9db AC |
905 | Data |= 0x08; /* Driver done bit */ |
906 | Data |= 0x20; /* rx_disable */ | |
907 | status = mos7840_set_reg_sync(port, | |
908 | mos7840_port->ControlRegOffset, Data); | |
3f542974 PS |
909 | if (status < 0) { |
910 | dbg("writing Controlreg failed\n"); | |
911 | return -1; | |
912 | } | |
880af9db AC |
913 | /* do register settings here */ |
914 | /* Set all regs to the device default values. */ | |
915 | /*********************************** | |
916 | * First Disable all interrupts. | |
917 | ***********************************/ | |
3f542974 | 918 | Data = 0x00; |
3f542974 PS |
919 | status = mos7840_set_uart_reg(port, INTERRUPT_ENABLE_REGISTER, Data); |
920 | if (status < 0) { | |
921 | dbg("disableing interrupts failed\n"); | |
922 | return -1; | |
923 | } | |
880af9db | 924 | /* Set FIFO_CONTROL_REGISTER to the default value */ |
3f542974 | 925 | Data = 0x00; |
3f542974 PS |
926 | status = mos7840_set_uart_reg(port, FIFO_CONTROL_REGISTER, Data); |
927 | if (status < 0) { | |
928 | dbg("Writing FIFO_CONTROL_REGISTER failed\n"); | |
929 | return -1; | |
930 | } | |
931 | ||
932 | Data = 0xcf; | |
3f542974 PS |
933 | status = mos7840_set_uart_reg(port, FIFO_CONTROL_REGISTER, Data); |
934 | if (status < 0) { | |
935 | dbg("Writing FIFO_CONTROL_REGISTER failed\n"); | |
936 | return -1; | |
937 | } | |
938 | ||
939 | Data = 0x03; | |
3f542974 PS |
940 | status = mos7840_set_uart_reg(port, LINE_CONTROL_REGISTER, Data); |
941 | mos7840_port->shadowLCR = Data; | |
942 | ||
943 | Data = 0x0b; | |
3f542974 PS |
944 | status = mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, Data); |
945 | mos7840_port->shadowMCR = Data; | |
946 | ||
947 | Data = 0x00; | |
3f542974 PS |
948 | status = mos7840_get_uart_reg(port, LINE_CONTROL_REGISTER, &Data); |
949 | mos7840_port->shadowLCR = Data; | |
950 | ||
880af9db | 951 | Data |= SERIAL_LCR_DLAB; /* data latch enable in LCR 0x80 */ |
3f542974 PS |
952 | status = mos7840_set_uart_reg(port, LINE_CONTROL_REGISTER, Data); |
953 | ||
954 | Data = 0x0c; | |
3f542974 PS |
955 | status = mos7840_set_uart_reg(port, DIVISOR_LATCH_LSB, Data); |
956 | ||
957 | Data = 0x0; | |
3f542974 PS |
958 | status = mos7840_set_uart_reg(port, DIVISOR_LATCH_MSB, Data); |
959 | ||
960 | Data = 0x00; | |
3f542974 PS |
961 | status = mos7840_get_uart_reg(port, LINE_CONTROL_REGISTER, &Data); |
962 | ||
963 | Data = Data & ~SERIAL_LCR_DLAB; | |
3f542974 PS |
964 | status = mos7840_set_uart_reg(port, LINE_CONTROL_REGISTER, Data); |
965 | mos7840_port->shadowLCR = Data; | |
966 | ||
880af9db | 967 | /* clearing Bulkin and Bulkout Fifo */ |
3f542974 | 968 | Data = 0x0; |
3f542974 PS |
969 | status = mos7840_get_reg_sync(port, mos7840_port->SpRegOffset, &Data); |
970 | ||
971 | Data = Data | 0x0c; | |
3f542974 PS |
972 | status = mos7840_set_reg_sync(port, mos7840_port->SpRegOffset, Data); |
973 | ||
974 | Data = Data & ~0x0c; | |
3f542974 | 975 | status = mos7840_set_reg_sync(port, mos7840_port->SpRegOffset, Data); |
880af9db | 976 | /* Finally enable all interrupts */ |
3f542974 | 977 | Data = 0x0c; |
3f542974 PS |
978 | status = mos7840_set_uart_reg(port, INTERRUPT_ENABLE_REGISTER, Data); |
979 | ||
880af9db | 980 | /* clearing rx_disable */ |
3f542974 | 981 | Data = 0x0; |
880af9db AC |
982 | status = mos7840_get_reg_sync(port, mos7840_port->ControlRegOffset, |
983 | &Data); | |
3f542974 | 984 | Data = Data & ~0x20; |
880af9db AC |
985 | status = mos7840_set_reg_sync(port, mos7840_port->ControlRegOffset, |
986 | Data); | |
3f542974 | 987 | |
880af9db | 988 | /* rx_negate */ |
3f542974 | 989 | Data = 0x0; |
880af9db AC |
990 | status = mos7840_get_reg_sync(port, mos7840_port->ControlRegOffset, |
991 | &Data); | |
3f542974 | 992 | Data = Data | 0x10; |
880af9db AC |
993 | status = mos7840_set_reg_sync(port, mos7840_port->ControlRegOffset, |
994 | Data); | |
3f542974 PS |
995 | |
996 | /* force low_latency on so that our tty_push actually forces * | |
997 | * the data through,otherwise it is scheduled, and with * | |
998 | * high data rates (like with OHCI) data can get lost. */ | |
95da310e AC |
999 | if (tty) |
1000 | tty->low_latency = 1; | |
880af9db AC |
1001 | |
1002 | /* Check to see if we've set up our endpoint info yet * | |
1003 | * (can't set it up in mos7840_startup as the structures * | |
1004 | * were not set up at that time.) */ | |
0de9a702 | 1005 | if (port0->open_ports == 1) { |
3f542974 | 1006 | if (serial->port[0]->interrupt_in_buffer == NULL) { |
3f542974 | 1007 | /* set up interrupt urb */ |
3f542974 | 1008 | usb_fill_int_urb(serial->port[0]->interrupt_in_urb, |
880af9db AC |
1009 | serial->dev, |
1010 | usb_rcvintpipe(serial->dev, | |
1011 | serial->port[0]->interrupt_in_endpointAddress), | |
1012 | serial->port[0]->interrupt_in_buffer, | |
1013 | serial->port[0]->interrupt_in_urb-> | |
1014 | transfer_buffer_length, | |
1015 | mos7840_interrupt_callback, | |
1016 | serial, | |
1017 | serial->port[0]->interrupt_in_urb->interval); | |
3f542974 PS |
1018 | |
1019 | /* start interrupt read for mos7840 * | |
1020 | * will continue as long as mos7840 is connected */ | |
1021 | ||
1022 | response = | |
1023 | usb_submit_urb(serial->port[0]->interrupt_in_urb, | |
1024 | GFP_KERNEL); | |
1025 | if (response) { | |
194343d9 GKH |
1026 | dev_err(&port->dev, "%s - Error %d submitting " |
1027 | "interrupt urb\n", __func__, response); | |
3f542974 PS |
1028 | } |
1029 | ||
1030 | } | |
1031 | ||
1032 | } | |
1033 | ||
1034 | /* see if we've set up our endpoint info yet * | |
1035 | * (can't set it up in mos7840_startup as the * | |
1036 | * structures were not set up at that time.) */ | |
1037 | ||
1038 | dbg("port number is %d \n", port->number); | |
1039 | dbg("serial number is %d \n", port->serial->minor); | |
1040 | dbg("Bulkin endpoint is %d \n", port->bulk_in_endpointAddress); | |
1041 | dbg("BulkOut endpoint is %d \n", port->bulk_out_endpointAddress); | |
1042 | dbg("Interrupt endpoint is %d \n", port->interrupt_in_endpointAddress); | |
1043 | dbg("port's number in the device is %d\n", mos7840_port->port_num); | |
1044 | mos7840_port->read_urb = port->read_urb; | |
1045 | ||
1046 | /* set up our bulk in urb */ | |
1047 | ||
1048 | usb_fill_bulk_urb(mos7840_port->read_urb, | |
1049 | serial->dev, | |
1050 | usb_rcvbulkpipe(serial->dev, | |
1051 | port->bulk_in_endpointAddress), | |
1052 | port->bulk_in_buffer, | |
1053 | mos7840_port->read_urb->transfer_buffer_length, | |
1054 | mos7840_bulk_in_callback, mos7840_port); | |
1055 | ||
1056 | dbg("mos7840_open: bulkin endpoint is %d\n", | |
1057 | port->bulk_in_endpointAddress); | |
1058 | response = usb_submit_urb(mos7840_port->read_urb, GFP_KERNEL); | |
1059 | if (response) { | |
194343d9 GKH |
1060 | dev_err(&port->dev, "%s - Error %d submitting control urb\n", |
1061 | __func__, response); | |
3f542974 PS |
1062 | } |
1063 | ||
1064 | /* initialize our wait queues */ | |
1065 | init_waitqueue_head(&mos7840_port->wait_chase); | |
1066 | init_waitqueue_head(&mos7840_port->delta_msr_wait); | |
1067 | ||
1068 | /* initialize our icount structure */ | |
1069 | memset(&(mos7840_port->icount), 0x00, sizeof(mos7840_port->icount)); | |
1070 | ||
1071 | /* initialize our port settings */ | |
880af9db AC |
1072 | /* Must set to enable ints! */ |
1073 | mos7840_port->shadowMCR = MCR_MASTER_IE; | |
3f542974 PS |
1074 | /* send a open port command */ |
1075 | mos7840_port->open = 1; | |
880af9db | 1076 | /* mos7840_change_port_settings(mos7840_port,old_termios); */ |
3f542974 PS |
1077 | mos7840_port->icount.tx = 0; |
1078 | mos7840_port->icount.rx = 0; | |
1079 | ||
880af9db AC |
1080 | dbg("\n\nusb_serial serial:%p mos7840_port:%p\n usb_serial_port port:%p\n\n", |
1081 | serial, mos7840_port, port); | |
3f542974 PS |
1082 | |
1083 | return 0; | |
1084 | ||
1085 | } | |
1086 | ||
1087 | /***************************************************************************** | |
1088 | * mos7840_chars_in_buffer | |
1089 | * this function is called by the tty driver when it wants to know how many | |
1090 | * bytes of data we currently have outstanding in the port (data that has | |
1091 | * been written, but hasn't made it out the port yet) | |
1092 | * If successful, we return the number of bytes left to be written in the | |
1093 | * system, | |
95da310e | 1094 | * Otherwise we return zero. |
3f542974 PS |
1095 | *****************************************************************************/ |
1096 | ||
95da310e | 1097 | static int mos7840_chars_in_buffer(struct tty_struct *tty) |
3f542974 | 1098 | { |
95da310e | 1099 | struct usb_serial_port *port = tty->driver_data; |
3f542974 PS |
1100 | int i; |
1101 | int chars = 0; | |
0de9a702 | 1102 | unsigned long flags; |
3f542974 PS |
1103 | struct moschip_port *mos7840_port; |
1104 | ||
1105 | dbg("%s \n", " mos7840_chars_in_buffer:entering ..........."); | |
1106 | ||
441b62c1 | 1107 | if (mos7840_port_paranoia_check(port, __func__)) { |
3f542974 | 1108 | dbg("%s", "Invalid port \n"); |
95da310e | 1109 | return 0; |
3f542974 PS |
1110 | } |
1111 | ||
1112 | mos7840_port = mos7840_get_port_private(port); | |
1113 | if (mos7840_port == NULL) { | |
1114 | dbg("%s \n", "mos7840_break:leaving ..........."); | |
95da310e | 1115 | return 0; |
3f542974 PS |
1116 | } |
1117 | ||
880af9db | 1118 | spin_lock_irqsave(&mos7840_port->pool_lock, flags); |
95da310e AC |
1119 | for (i = 0; i < NUM_URBS; ++i) |
1120 | if (mos7840_port->busy[i]) | |
3f542974 | 1121 | chars += URB_TRANSFER_BUFFER_SIZE; |
880af9db | 1122 | spin_unlock_irqrestore(&mos7840_port->pool_lock, flags); |
441b62c1 | 1123 | dbg("%s - returns %d", __func__, chars); |
0de9a702 | 1124 | return chars; |
3f542974 PS |
1125 | |
1126 | } | |
1127 | ||
1128 | /************************************************************************ | |
1129 | * | |
1130 | * mos7840_block_until_tx_empty | |
1131 | * | |
1132 | * This function will block the close until one of the following: | |
1133 | * 1. TX count are 0 | |
1134 | * 2. The mos7840 has stopped | |
dc0d5c1e | 1135 | * 3. A timeout of 3 seconds without activity has expired |
3f542974 PS |
1136 | * |
1137 | ************************************************************************/ | |
95da310e AC |
1138 | static void mos7840_block_until_tx_empty(struct tty_struct *tty, |
1139 | struct moschip_port *mos7840_port) | |
3f542974 PS |
1140 | { |
1141 | int timeout = HZ / 10; | |
1142 | int wait = 30; | |
1143 | int count; | |
1144 | ||
1145 | while (1) { | |
1146 | ||
95da310e | 1147 | count = mos7840_chars_in_buffer(tty); |
3f542974 PS |
1148 | |
1149 | /* Check for Buffer status */ | |
880af9db | 1150 | if (count <= 0) |
3f542974 | 1151 | return; |
3f542974 PS |
1152 | |
1153 | /* Block the thread for a while */ | |
1154 | interruptible_sleep_on_timeout(&mos7840_port->wait_chase, | |
1155 | timeout); | |
1156 | ||
1157 | /* No activity.. count down section */ | |
1158 | wait--; | |
1159 | if (wait == 0) { | |
441b62c1 | 1160 | dbg("%s - TIMEOUT", __func__); |
3f542974 PS |
1161 | return; |
1162 | } else { | |
dc0d5c1e | 1163 | /* Reset timeout value back to seconds */ |
3f542974 PS |
1164 | wait = 30; |
1165 | } | |
1166 | } | |
1167 | } | |
1168 | ||
1169 | /***************************************************************************** | |
1170 | * mos7840_close | |
1171 | * this function is called by the tty driver when a port is closed | |
1172 | *****************************************************************************/ | |
1173 | ||
95da310e AC |
1174 | static void mos7840_close(struct tty_struct *tty, |
1175 | struct usb_serial_port *port, struct file *filp) | |
3f542974 PS |
1176 | { |
1177 | struct usb_serial *serial; | |
1178 | struct moschip_port *mos7840_port; | |
0de9a702 | 1179 | struct moschip_port *port0; |
3f542974 PS |
1180 | int j; |
1181 | __u16 Data; | |
1182 | ||
1183 | dbg("%s\n", "mos7840_close:entering..."); | |
1184 | ||
441b62c1 | 1185 | if (mos7840_port_paranoia_check(port, __func__)) { |
3f542974 PS |
1186 | dbg("%s", "Port Paranoia failed \n"); |
1187 | return; | |
1188 | } | |
1189 | ||
441b62c1 | 1190 | serial = mos7840_get_usb_serial(port, __func__); |
3f542974 PS |
1191 | if (!serial) { |
1192 | dbg("%s", "Serial Paranoia failed \n"); | |
1193 | return; | |
1194 | } | |
1195 | ||
1196 | mos7840_port = mos7840_get_port_private(port); | |
0de9a702 | 1197 | port0 = mos7840_get_port_private(serial->port[0]); |
3f542974 | 1198 | |
0de9a702 | 1199 | if (mos7840_port == NULL || port0 == NULL) |
3f542974 | 1200 | return; |
3f542974 PS |
1201 | |
1202 | for (j = 0; j < NUM_URBS; ++j) | |
1203 | usb_kill_urb(mos7840_port->write_urb_pool[j]); | |
1204 | ||
1205 | /* Freeing Write URBs */ | |
1206 | for (j = 0; j < NUM_URBS; ++j) { | |
1207 | if (mos7840_port->write_urb_pool[j]) { | |
1208 | if (mos7840_port->write_urb_pool[j]->transfer_buffer) | |
1209 | kfree(mos7840_port->write_urb_pool[j]-> | |
1210 | transfer_buffer); | |
1211 | ||
1212 | usb_free_urb(mos7840_port->write_urb_pool[j]); | |
1213 | } | |
1214 | } | |
1215 | ||
95da310e | 1216 | if (serial->dev) |
3f542974 | 1217 | /* flush and block until tx is empty */ |
95da310e | 1218 | mos7840_block_until_tx_empty(tty, mos7840_port); |
3f542974 PS |
1219 | |
1220 | /* While closing port, shutdown all bulk read, write * | |
1221 | * and interrupt read if they exists */ | |
1222 | if (serial->dev) { | |
3f542974 PS |
1223 | if (mos7840_port->write_urb) { |
1224 | dbg("%s", "Shutdown bulk write\n"); | |
1225 | usb_kill_urb(mos7840_port->write_urb); | |
1226 | } | |
3f542974 PS |
1227 | if (mos7840_port->read_urb) { |
1228 | dbg("%s", "Shutdown bulk read\n"); | |
1229 | usb_kill_urb(mos7840_port->read_urb); | |
1230 | } | |
1231 | if ((&mos7840_port->control_urb)) { | |
1232 | dbg("%s", "Shutdown control read\n"); | |
880af9db | 1233 | /*/ usb_kill_urb (mos7840_port->control_urb); */ |
3f542974 PS |
1234 | } |
1235 | } | |
880af9db AC |
1236 | /* if(mos7840_port->ctrl_buf != NULL) */ |
1237 | /* kfree(mos7840_port->ctrl_buf); */ | |
0de9a702 | 1238 | port0->open_ports--; |
3f542974 | 1239 | dbg("mos7840_num_open_ports in close%d:in port%d\n", |
0de9a702 ON |
1240 | port0->open_ports, port->number); |
1241 | if (port0->open_ports == 0) { | |
3f542974 PS |
1242 | if (serial->port[0]->interrupt_in_urb) { |
1243 | dbg("%s", "Shutdown interrupt_in_urb\n"); | |
0de9a702 | 1244 | usb_kill_urb(serial->port[0]->interrupt_in_urb); |
3f542974 PS |
1245 | } |
1246 | } | |
1247 | ||
1248 | if (mos7840_port->write_urb) { | |
1249 | /* if this urb had a transfer buffer already (old tx) free it */ | |
880af9db | 1250 | if (mos7840_port->write_urb->transfer_buffer != NULL) |
3f542974 | 1251 | kfree(mos7840_port->write_urb->transfer_buffer); |
3f542974 PS |
1252 | usb_free_urb(mos7840_port->write_urb); |
1253 | } | |
1254 | ||
1255 | Data = 0x0; | |
1256 | mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, Data); | |
1257 | ||
1258 | Data = 0x00; | |
1259 | mos7840_set_uart_reg(port, INTERRUPT_ENABLE_REGISTER, Data); | |
1260 | ||
1261 | mos7840_port->open = 0; | |
1262 | ||
1263 | dbg("%s \n", "Leaving ............"); | |
1264 | } | |
1265 | ||
1266 | /************************************************************************ | |
1267 | * | |
1268 | * mos7840_block_until_chase_response | |
1269 | * | |
1270 | * This function will block the close until one of the following: | |
1271 | * 1. Response to our Chase comes from mos7840 | |
dc0d5c1e | 1272 | * 2. A timeout of 10 seconds without activity has expired |
3f542974 PS |
1273 | * (1K of mos7840 data @ 2400 baud ==> 4 sec to empty) |
1274 | * | |
1275 | ************************************************************************/ | |
1276 | ||
95da310e AC |
1277 | static void mos7840_block_until_chase_response(struct tty_struct *tty, |
1278 | struct moschip_port *mos7840_port) | |
3f542974 PS |
1279 | { |
1280 | int timeout = 1 * HZ; | |
1281 | int wait = 10; | |
1282 | int count; | |
1283 | ||
1284 | while (1) { | |
95da310e | 1285 | count = mos7840_chars_in_buffer(tty); |
3f542974 PS |
1286 | |
1287 | /* Check for Buffer status */ | |
880af9db | 1288 | if (count <= 0) |
3f542974 | 1289 | return; |
3f542974 PS |
1290 | |
1291 | /* Block the thread for a while */ | |
1292 | interruptible_sleep_on_timeout(&mos7840_port->wait_chase, | |
1293 | timeout); | |
1294 | /* No activity.. count down section */ | |
1295 | wait--; | |
1296 | if (wait == 0) { | |
441b62c1 | 1297 | dbg("%s - TIMEOUT", __func__); |
3f542974 PS |
1298 | return; |
1299 | } else { | |
dc0d5c1e | 1300 | /* Reset timeout value back to seconds */ |
3f542974 PS |
1301 | wait = 10; |
1302 | } | |
1303 | } | |
1304 | ||
1305 | } | |
1306 | ||
1307 | /***************************************************************************** | |
1308 | * mos7840_break | |
1309 | * this function sends a break to the port | |
1310 | *****************************************************************************/ | |
95da310e | 1311 | static void mos7840_break(struct tty_struct *tty, int break_state) |
3f542974 | 1312 | { |
95da310e | 1313 | struct usb_serial_port *port = tty->driver_data; |
3f542974 PS |
1314 | unsigned char data; |
1315 | struct usb_serial *serial; | |
1316 | struct moschip_port *mos7840_port; | |
1317 | ||
1318 | dbg("%s \n", "Entering ..........."); | |
1319 | dbg("mos7840_break: Start\n"); | |
1320 | ||
441b62c1 | 1321 | if (mos7840_port_paranoia_check(port, __func__)) { |
3f542974 PS |
1322 | dbg("%s", "Port Paranoia failed \n"); |
1323 | return; | |
1324 | } | |
1325 | ||
441b62c1 | 1326 | serial = mos7840_get_usb_serial(port, __func__); |
3f542974 PS |
1327 | if (!serial) { |
1328 | dbg("%s", "Serial Paranoia failed \n"); | |
1329 | return; | |
1330 | } | |
1331 | ||
1332 | mos7840_port = mos7840_get_port_private(port); | |
1333 | ||
880af9db | 1334 | if (mos7840_port == NULL) |
3f542974 | 1335 | return; |
3f542974 | 1336 | |
95da310e | 1337 | if (serial->dev) |
3f542974 | 1338 | /* flush and block until tx is empty */ |
95da310e | 1339 | mos7840_block_until_chase_response(tty, mos7840_port); |
3f542974 | 1340 | |
95da310e | 1341 | if (break_state == -1) |
3f542974 | 1342 | data = mos7840_port->shadowLCR | LCR_SET_BREAK; |
95da310e | 1343 | else |
3f542974 | 1344 | data = mos7840_port->shadowLCR & ~LCR_SET_BREAK; |
3f542974 | 1345 | |
6b447f04 | 1346 | /* FIXME: no locking on shadowLCR anywhere in driver */ |
3f542974 PS |
1347 | mos7840_port->shadowLCR = data; |
1348 | dbg("mcs7840_break mos7840_port->shadowLCR is %x\n", | |
1349 | mos7840_port->shadowLCR); | |
1350 | mos7840_set_uart_reg(port, LINE_CONTROL_REGISTER, | |
1351 | mos7840_port->shadowLCR); | |
1352 | ||
1353 | return; | |
1354 | } | |
1355 | ||
1356 | /***************************************************************************** | |
1357 | * mos7840_write_room | |
1358 | * this function is called by the tty driver when it wants to know how many | |
1359 | * bytes of data we can accept for a specific port. | |
1360 | * If successful, we return the amount of room that we have for this port | |
1361 | * Otherwise we return a negative error number. | |
1362 | *****************************************************************************/ | |
1363 | ||
95da310e | 1364 | static int mos7840_write_room(struct tty_struct *tty) |
3f542974 | 1365 | { |
95da310e | 1366 | struct usb_serial_port *port = tty->driver_data; |
3f542974 PS |
1367 | int i; |
1368 | int room = 0; | |
0de9a702 | 1369 | unsigned long flags; |
3f542974 PS |
1370 | struct moschip_port *mos7840_port; |
1371 | ||
1372 | dbg("%s \n", " mos7840_write_room:entering ..........."); | |
1373 | ||
441b62c1 | 1374 | if (mos7840_port_paranoia_check(port, __func__)) { |
3f542974 PS |
1375 | dbg("%s", "Invalid port \n"); |
1376 | dbg("%s \n", " mos7840_write_room:leaving ..........."); | |
1377 | return -1; | |
1378 | } | |
1379 | ||
1380 | mos7840_port = mos7840_get_port_private(port); | |
1381 | if (mos7840_port == NULL) { | |
1382 | dbg("%s \n", "mos7840_break:leaving ..........."); | |
1383 | return -1; | |
1384 | } | |
1385 | ||
0de9a702 | 1386 | spin_lock_irqsave(&mos7840_port->pool_lock, flags); |
3f542974 | 1387 | for (i = 0; i < NUM_URBS; ++i) { |
880af9db | 1388 | if (!mos7840_port->busy[i]) |
3f542974 | 1389 | room += URB_TRANSFER_BUFFER_SIZE; |
3f542974 | 1390 | } |
0de9a702 | 1391 | spin_unlock_irqrestore(&mos7840_port->pool_lock, flags); |
3f542974 | 1392 | |
0de9a702 | 1393 | room = (room == 0) ? 0 : room - URB_TRANSFER_BUFFER_SIZE + 1; |
441b62c1 | 1394 | dbg("%s - returns %d", __func__, room); |
0de9a702 | 1395 | return room; |
3f542974 PS |
1396 | |
1397 | } | |
1398 | ||
1399 | /***************************************************************************** | |
1400 | * mos7840_write | |
1401 | * this function is called by the tty driver when data should be written to | |
1402 | * the port. | |
1403 | * If successful, we return the number of bytes written, otherwise we | |
1404 | * return a negative error number. | |
1405 | *****************************************************************************/ | |
1406 | ||
95da310e | 1407 | static int mos7840_write(struct tty_struct *tty, struct usb_serial_port *port, |
3f542974 PS |
1408 | const unsigned char *data, int count) |
1409 | { | |
1410 | int status; | |
1411 | int i; | |
1412 | int bytes_sent = 0; | |
1413 | int transfer_size; | |
0de9a702 | 1414 | unsigned long flags; |
3f542974 PS |
1415 | |
1416 | struct moschip_port *mos7840_port; | |
1417 | struct usb_serial *serial; | |
1418 | struct urb *urb; | |
880af9db | 1419 | /* __u16 Data; */ |
3f542974 PS |
1420 | const unsigned char *current_position = data; |
1421 | unsigned char *data1; | |
1422 | dbg("%s \n", "entering ..........."); | |
880af9db AC |
1423 | /* dbg("mos7840_write: mos7840_port->shadowLCR is %x\n", |
1424 | mos7840_port->shadowLCR); */ | |
3f542974 PS |
1425 | |
1426 | #ifdef NOTMOS7840 | |
1427 | Data = 0x00; | |
3f542974 PS |
1428 | status = mos7840_get_uart_reg(port, LINE_CONTROL_REGISTER, &Data); |
1429 | mos7840_port->shadowLCR = Data; | |
1430 | dbg("mos7840_write: LINE_CONTROL_REGISTER is %x\n", Data); | |
1431 | dbg("mos7840_write: mos7840_port->shadowLCR is %x\n", | |
1432 | mos7840_port->shadowLCR); | |
1433 | ||
880af9db AC |
1434 | /* Data = 0x03; */ |
1435 | /* status = mos7840_set_uart_reg(port,LINE_CONTROL_REGISTER,Data); */ | |
1436 | /* mos7840_port->shadowLCR=Data;//Need to add later */ | |
3f542974 | 1437 | |
880af9db | 1438 | Data |= SERIAL_LCR_DLAB; /* data latch enable in LCR 0x80 */ |
3f542974 PS |
1439 | status = mos7840_set_uart_reg(port, LINE_CONTROL_REGISTER, Data); |
1440 | ||
880af9db AC |
1441 | /* Data = 0x0c; */ |
1442 | /* status = mos7840_set_uart_reg(port,DIVISOR_LATCH_LSB,Data); */ | |
3f542974 | 1443 | Data = 0x00; |
3f542974 PS |
1444 | status = mos7840_get_uart_reg(port, DIVISOR_LATCH_LSB, &Data); |
1445 | dbg("mos7840_write:DLL value is %x\n", Data); | |
1446 | ||
1447 | Data = 0x0; | |
3f542974 PS |
1448 | status = mos7840_get_uart_reg(port, DIVISOR_LATCH_MSB, &Data); |
1449 | dbg("mos7840_write:DLM value is %x\n", Data); | |
1450 | ||
1451 | Data = Data & ~SERIAL_LCR_DLAB; | |
1452 | dbg("mos7840_write: mos7840_port->shadowLCR is %x\n", | |
1453 | mos7840_port->shadowLCR); | |
3f542974 PS |
1454 | status = mos7840_set_uart_reg(port, LINE_CONTROL_REGISTER, Data); |
1455 | #endif | |
1456 | ||
441b62c1 | 1457 | if (mos7840_port_paranoia_check(port, __func__)) { |
3f542974 PS |
1458 | dbg("%s", "Port Paranoia failed \n"); |
1459 | return -1; | |
1460 | } | |
1461 | ||
1462 | serial = port->serial; | |
441b62c1 | 1463 | if (mos7840_serial_paranoia_check(serial, __func__)) { |
3f542974 PS |
1464 | dbg("%s", "Serial Paranoia failed \n"); |
1465 | return -1; | |
1466 | } | |
1467 | ||
1468 | mos7840_port = mos7840_get_port_private(port); | |
1469 | if (mos7840_port == NULL) { | |
1470 | dbg("%s", "mos7840_port is NULL\n"); | |
1471 | return -1; | |
1472 | } | |
1473 | ||
1474 | /* try to find a free urb in the list */ | |
1475 | urb = NULL; | |
1476 | ||
0de9a702 | 1477 | spin_lock_irqsave(&mos7840_port->pool_lock, flags); |
3f542974 | 1478 | for (i = 0; i < NUM_URBS; ++i) { |
0de9a702 ON |
1479 | if (!mos7840_port->busy[i]) { |
1480 | mos7840_port->busy[i] = 1; | |
3f542974 PS |
1481 | urb = mos7840_port->write_urb_pool[i]; |
1482 | dbg("\nURB:%d", i); | |
1483 | break; | |
1484 | } | |
1485 | } | |
0de9a702 | 1486 | spin_unlock_irqrestore(&mos7840_port->pool_lock, flags); |
3f542974 PS |
1487 | |
1488 | if (urb == NULL) { | |
441b62c1 | 1489 | dbg("%s - no more free urbs", __func__); |
3f542974 PS |
1490 | goto exit; |
1491 | } | |
1492 | ||
1493 | if (urb->transfer_buffer == NULL) { | |
1494 | urb->transfer_buffer = | |
1495 | kmalloc(URB_TRANSFER_BUFFER_SIZE, GFP_KERNEL); | |
1496 | ||
1497 | if (urb->transfer_buffer == NULL) { | |
194343d9 GKH |
1498 | dev_err(&port->dev, "%s no more kernel memory...\n", |
1499 | __func__); | |
3f542974 PS |
1500 | goto exit; |
1501 | } | |
1502 | } | |
1503 | transfer_size = min(count, URB_TRANSFER_BUFFER_SIZE); | |
1504 | ||
97c4965d | 1505 | memcpy(urb->transfer_buffer, current_position, transfer_size); |
3f542974 PS |
1506 | |
1507 | /* fill urb with data and submit */ | |
1508 | usb_fill_bulk_urb(urb, | |
1509 | serial->dev, | |
1510 | usb_sndbulkpipe(serial->dev, | |
1511 | port->bulk_out_endpointAddress), | |
1512 | urb->transfer_buffer, | |
1513 | transfer_size, | |
1514 | mos7840_bulk_out_data_callback, mos7840_port); | |
1515 | ||
1516 | data1 = urb->transfer_buffer; | |
1517 | dbg("\nbulkout endpoint is %d", port->bulk_out_endpointAddress); | |
1518 | ||
1519 | /* send it down the pipe */ | |
1520 | status = usb_submit_urb(urb, GFP_ATOMIC); | |
1521 | ||
1522 | if (status) { | |
0de9a702 | 1523 | mos7840_port->busy[i] = 0; |
194343d9 GKH |
1524 | dev_err(&port->dev, "%s - usb_submit_urb(write bulk) failed " |
1525 | "with status = %d\n", __func__, status); | |
3f542974 PS |
1526 | bytes_sent = status; |
1527 | goto exit; | |
1528 | } | |
1529 | bytes_sent = transfer_size; | |
1530 | mos7840_port->icount.tx += transfer_size; | |
0de9a702 | 1531 | smp_wmb(); |
3f542974 | 1532 | dbg("mos7840_port->icount.tx is %d:\n", mos7840_port->icount.tx); |
95da310e | 1533 | exit: |
3f542974 PS |
1534 | return bytes_sent; |
1535 | ||
1536 | } | |
1537 | ||
1538 | /***************************************************************************** | |
1539 | * mos7840_throttle | |
1540 | * this function is called by the tty driver when it wants to stop the data | |
1541 | * being read from the port. | |
1542 | *****************************************************************************/ | |
1543 | ||
95da310e | 1544 | static void mos7840_throttle(struct tty_struct *tty) |
3f542974 | 1545 | { |
95da310e | 1546 | struct usb_serial_port *port = tty->driver_data; |
3f542974 | 1547 | struct moschip_port *mos7840_port; |
3f542974 PS |
1548 | int status; |
1549 | ||
441b62c1 | 1550 | if (mos7840_port_paranoia_check(port, __func__)) { |
3f542974 PS |
1551 | dbg("%s", "Invalid port \n"); |
1552 | return; | |
1553 | } | |
1554 | ||
1555 | dbg("- port %d\n", port->number); | |
1556 | ||
1557 | mos7840_port = mos7840_get_port_private(port); | |
1558 | ||
1559 | if (mos7840_port == NULL) | |
1560 | return; | |
1561 | ||
1562 | if (!mos7840_port->open) { | |
1563 | dbg("%s\n", "port not opened"); | |
1564 | return; | |
1565 | } | |
1566 | ||
1567 | dbg("%s", "Entering .......... \n"); | |
1568 | ||
3f542974 PS |
1569 | /* if we are implementing XON/XOFF, send the stop character */ |
1570 | if (I_IXOFF(tty)) { | |
1571 | unsigned char stop_char = STOP_CHAR(tty); | |
95da310e AC |
1572 | status = mos7840_write(tty, port, &stop_char, 1); |
1573 | if (status <= 0) | |
3f542974 | 1574 | return; |
3f542974 | 1575 | } |
3f542974 PS |
1576 | /* if we are implementing RTS/CTS, toggle that line */ |
1577 | if (tty->termios->c_cflag & CRTSCTS) { | |
1578 | mos7840_port->shadowMCR &= ~MCR_RTS; | |
95da310e | 1579 | status = mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, |
3f542974 | 1580 | mos7840_port->shadowMCR); |
95da310e | 1581 | if (status < 0) |
3f542974 | 1582 | return; |
3f542974 PS |
1583 | } |
1584 | ||
1585 | return; | |
1586 | } | |
1587 | ||
1588 | /***************************************************************************** | |
1589 | * mos7840_unthrottle | |
880af9db AC |
1590 | * this function is called by the tty driver when it wants to resume |
1591 | * the data being read from the port (called after mos7840_throttle is | |
1592 | * called) | |
3f542974 | 1593 | *****************************************************************************/ |
95da310e | 1594 | static void mos7840_unthrottle(struct tty_struct *tty) |
3f542974 | 1595 | { |
95da310e | 1596 | struct usb_serial_port *port = tty->driver_data; |
3f542974 PS |
1597 | int status; |
1598 | struct moschip_port *mos7840_port = mos7840_get_port_private(port); | |
1599 | ||
441b62c1 | 1600 | if (mos7840_port_paranoia_check(port, __func__)) { |
3f542974 PS |
1601 | dbg("%s", "Invalid port \n"); |
1602 | return; | |
1603 | } | |
1604 | ||
1605 | if (mos7840_port == NULL) | |
1606 | return; | |
1607 | ||
1608 | if (!mos7840_port->open) { | |
441b62c1 | 1609 | dbg("%s - port not opened", __func__); |
3f542974 PS |
1610 | return; |
1611 | } | |
1612 | ||
1613 | dbg("%s", "Entering .......... \n"); | |
1614 | ||
3f542974 PS |
1615 | /* if we are implementing XON/XOFF, send the start character */ |
1616 | if (I_IXOFF(tty)) { | |
1617 | unsigned char start_char = START_CHAR(tty); | |
95da310e AC |
1618 | status = mos7840_write(tty, port, &start_char, 1); |
1619 | if (status <= 0) | |
3f542974 | 1620 | return; |
3f542974 PS |
1621 | } |
1622 | ||
1623 | /* if we are implementing RTS/CTS, toggle that line */ | |
1624 | if (tty->termios->c_cflag & CRTSCTS) { | |
1625 | mos7840_port->shadowMCR |= MCR_RTS; | |
95da310e | 1626 | status = mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, |
3f542974 | 1627 | mos7840_port->shadowMCR); |
95da310e | 1628 | if (status < 0) |
3f542974 | 1629 | return; |
3f542974 | 1630 | } |
3f542974 PS |
1631 | } |
1632 | ||
95da310e | 1633 | static int mos7840_tiocmget(struct tty_struct *tty, struct file *file) |
3f542974 | 1634 | { |
95da310e | 1635 | struct usb_serial_port *port = tty->driver_data; |
3f542974 PS |
1636 | struct moschip_port *mos7840_port; |
1637 | unsigned int result; | |
1638 | __u16 msr; | |
1639 | __u16 mcr; | |
880af9db | 1640 | int status; |
3f542974 PS |
1641 | mos7840_port = mos7840_get_port_private(port); |
1642 | ||
441b62c1 | 1643 | dbg("%s - port %d", __func__, port->number); |
3f542974 PS |
1644 | |
1645 | if (mos7840_port == NULL) | |
1646 | return -ENODEV; | |
1647 | ||
1648 | status = mos7840_get_uart_reg(port, MODEM_STATUS_REGISTER, &msr); | |
1649 | status = mos7840_get_uart_reg(port, MODEM_CONTROL_REGISTER, &mcr); | |
1650 | result = ((mcr & MCR_DTR) ? TIOCM_DTR : 0) | |
1651 | | ((mcr & MCR_RTS) ? TIOCM_RTS : 0) | |
1652 | | ((mcr & MCR_LOOPBACK) ? TIOCM_LOOP : 0) | |
1653 | | ((msr & MOS7840_MSR_CTS) ? TIOCM_CTS : 0) | |
1654 | | ((msr & MOS7840_MSR_CD) ? TIOCM_CAR : 0) | |
1655 | | ((msr & MOS7840_MSR_RI) ? TIOCM_RI : 0) | |
1656 | | ((msr & MOS7840_MSR_DSR) ? TIOCM_DSR : 0); | |
1657 | ||
441b62c1 | 1658 | dbg("%s - 0x%04X", __func__, result); |
3f542974 PS |
1659 | |
1660 | return result; | |
1661 | } | |
1662 | ||
95da310e | 1663 | static int mos7840_tiocmset(struct tty_struct *tty, struct file *file, |
3f542974 PS |
1664 | unsigned int set, unsigned int clear) |
1665 | { | |
95da310e | 1666 | struct usb_serial_port *port = tty->driver_data; |
3f542974 PS |
1667 | struct moschip_port *mos7840_port; |
1668 | unsigned int mcr; | |
87521c46 | 1669 | int status; |
3f542974 | 1670 | |
441b62c1 | 1671 | dbg("%s - port %d", __func__, port->number); |
3f542974 PS |
1672 | |
1673 | mos7840_port = mos7840_get_port_private(port); | |
1674 | ||
1675 | if (mos7840_port == NULL) | |
1676 | return -ENODEV; | |
1677 | ||
e2984494 | 1678 | /* FIXME: What locks the port registers ? */ |
3f542974 PS |
1679 | mcr = mos7840_port->shadowMCR; |
1680 | if (clear & TIOCM_RTS) | |
1681 | mcr &= ~MCR_RTS; | |
1682 | if (clear & TIOCM_DTR) | |
1683 | mcr &= ~MCR_DTR; | |
1684 | if (clear & TIOCM_LOOP) | |
1685 | mcr &= ~MCR_LOOPBACK; | |
1686 | ||
1687 | if (set & TIOCM_RTS) | |
1688 | mcr |= MCR_RTS; | |
1689 | if (set & TIOCM_DTR) | |
1690 | mcr |= MCR_DTR; | |
1691 | if (set & TIOCM_LOOP) | |
1692 | mcr |= MCR_LOOPBACK; | |
1693 | ||
1694 | mos7840_port->shadowMCR = mcr; | |
1695 | ||
3f542974 PS |
1696 | status = mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, mcr); |
1697 | if (status < 0) { | |
1698 | dbg("setting MODEM_CONTROL_REGISTER Failed\n"); | |
87521c46 | 1699 | return status; |
3f542974 PS |
1700 | } |
1701 | ||
1702 | return 0; | |
1703 | } | |
1704 | ||
1705 | /***************************************************************************** | |
1706 | * mos7840_calc_baud_rate_divisor | |
1707 | * this function calculates the proper baud rate divisor for the specified | |
1708 | * baud rate. | |
1709 | *****************************************************************************/ | |
1710 | static int mos7840_calc_baud_rate_divisor(int baudRate, int *divisor, | |
880af9db | 1711 | __u16 *clk_sel_val) |
3f542974 PS |
1712 | { |
1713 | ||
441b62c1 | 1714 | dbg("%s - %d", __func__, baudRate); |
3f542974 PS |
1715 | |
1716 | if (baudRate <= 115200) { | |
1717 | *divisor = 115200 / baudRate; | |
1718 | *clk_sel_val = 0x0; | |
1719 | } | |
1720 | if ((baudRate > 115200) && (baudRate <= 230400)) { | |
1721 | *divisor = 230400 / baudRate; | |
1722 | *clk_sel_val = 0x10; | |
1723 | } else if ((baudRate > 230400) && (baudRate <= 403200)) { | |
1724 | *divisor = 403200 / baudRate; | |
1725 | *clk_sel_val = 0x20; | |
1726 | } else if ((baudRate > 403200) && (baudRate <= 460800)) { | |
1727 | *divisor = 460800 / baudRate; | |
1728 | *clk_sel_val = 0x30; | |
1729 | } else if ((baudRate > 460800) && (baudRate <= 806400)) { | |
1730 | *divisor = 806400 / baudRate; | |
1731 | *clk_sel_val = 0x40; | |
1732 | } else if ((baudRate > 806400) && (baudRate <= 921600)) { | |
1733 | *divisor = 921600 / baudRate; | |
1734 | *clk_sel_val = 0x50; | |
1735 | } else if ((baudRate > 921600) && (baudRate <= 1572864)) { | |
1736 | *divisor = 1572864 / baudRate; | |
1737 | *clk_sel_val = 0x60; | |
1738 | } else if ((baudRate > 1572864) && (baudRate <= 3145728)) { | |
1739 | *divisor = 3145728 / baudRate; | |
1740 | *clk_sel_val = 0x70; | |
1741 | } | |
1742 | return 0; | |
1743 | ||
1744 | #ifdef NOTMCS7840 | |
1745 | ||
1746 | for (i = 0; i < ARRAY_SIZE(mos7840_divisor_table); i++) { | |
1747 | if (mos7840_divisor_table[i].BaudRate == baudrate) { | |
1748 | *divisor = mos7840_divisor_table[i].Divisor; | |
1749 | return 0; | |
1750 | } | |
1751 | } | |
1752 | ||
1753 | /* After trying for all the standard baud rates * | |
1754 | * Try calculating the divisor for this baud rate */ | |
1755 | ||
1756 | if (baudrate > 75 && baudrate < 230400) { | |
1757 | /* get the divisor */ | |
1758 | custom = (__u16) (230400L / baudrate); | |
1759 | ||
1760 | /* Check for round off */ | |
1761 | round1 = (__u16) (2304000L / baudrate); | |
1762 | round = (__u16) (round1 - (custom * 10)); | |
880af9db | 1763 | if (round > 4) |
3f542974 | 1764 | custom++; |
3f542974 PS |
1765 | *divisor = custom; |
1766 | ||
1767 | dbg(" Baud %d = %d\n", baudrate, custom); | |
1768 | return 0; | |
1769 | } | |
1770 | ||
1771 | dbg("%s\n", " Baud calculation Failed..."); | |
1772 | return -1; | |
1773 | #endif | |
1774 | } | |
1775 | ||
1776 | /***************************************************************************** | |
1777 | * mos7840_send_cmd_write_baud_rate | |
1778 | * this function sends the proper command to change the baud rate of the | |
1779 | * specified port. | |
1780 | *****************************************************************************/ | |
1781 | ||
1782 | static int mos7840_send_cmd_write_baud_rate(struct moschip_port *mos7840_port, | |
1783 | int baudRate) | |
1784 | { | |
1785 | int divisor = 0; | |
1786 | int status; | |
1787 | __u16 Data; | |
1788 | unsigned char number; | |
1789 | __u16 clk_sel_val; | |
1790 | struct usb_serial_port *port; | |
1791 | ||
1792 | if (mos7840_port == NULL) | |
1793 | return -1; | |
1794 | ||
1795 | port = (struct usb_serial_port *)mos7840_port->port; | |
441b62c1 | 1796 | if (mos7840_port_paranoia_check(port, __func__)) { |
3f542974 PS |
1797 | dbg("%s", "Invalid port \n"); |
1798 | return -1; | |
1799 | } | |
1800 | ||
441b62c1 | 1801 | if (mos7840_serial_paranoia_check(port->serial, __func__)) { |
3f542974 PS |
1802 | dbg("%s", "Invalid Serial \n"); |
1803 | return -1; | |
1804 | } | |
1805 | ||
1806 | dbg("%s", "Entering .......... \n"); | |
1807 | ||
1808 | number = mos7840_port->port->number - mos7840_port->port->serial->minor; | |
1809 | ||
441b62c1 | 1810 | dbg("%s - port = %d, baud = %d", __func__, |
3f542974 | 1811 | mos7840_port->port->number, baudRate); |
880af9db | 1812 | /* reset clk_uart_sel in spregOffset */ |
3f542974 PS |
1813 | if (baudRate > 115200) { |
1814 | #ifdef HW_flow_control | |
880af9db AC |
1815 | /* NOTE: need to see the pther register to modify */ |
1816 | /* setting h/w flow control bit to 1 */ | |
3f542974 PS |
1817 | Data = 0x2b; |
1818 | mos7840_port->shadowMCR = Data; | |
880af9db AC |
1819 | status = mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, |
1820 | Data); | |
3f542974 PS |
1821 | if (status < 0) { |
1822 | dbg("Writing spreg failed in set_serial_baud\n"); | |
1823 | return -1; | |
1824 | } | |
1825 | #endif | |
1826 | ||
1827 | } else { | |
1828 | #ifdef HW_flow_control | |
880af9db | 1829 | / *setting h/w flow control bit to 0 */ |
3f542974 PS |
1830 | Data = 0xb; |
1831 | mos7840_port->shadowMCR = Data; | |
880af9db AC |
1832 | status = mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, |
1833 | Data); | |
3f542974 PS |
1834 | if (status < 0) { |
1835 | dbg("Writing spreg failed in set_serial_baud\n"); | |
1836 | return -1; | |
1837 | } | |
1838 | #endif | |
1839 | ||
1840 | } | |
1841 | ||
880af9db | 1842 | if (1) { /* baudRate <= 115200) */ |
3f542974 PS |
1843 | clk_sel_val = 0x0; |
1844 | Data = 0x0; | |
880af9db | 1845 | status = mos7840_calc_baud_rate_divisor(baudRate, &divisor, |
3f542974 | 1846 | &clk_sel_val); |
880af9db AC |
1847 | status = mos7840_get_reg_sync(port, mos7840_port->SpRegOffset, |
1848 | &Data); | |
3f542974 PS |
1849 | if (status < 0) { |
1850 | dbg("reading spreg failed in set_serial_baud\n"); | |
1851 | return -1; | |
1852 | } | |
1853 | Data = (Data & 0x8f) | clk_sel_val; | |
880af9db AC |
1854 | status = mos7840_set_reg_sync(port, mos7840_port->SpRegOffset, |
1855 | Data); | |
3f542974 PS |
1856 | if (status < 0) { |
1857 | dbg("Writing spreg failed in set_serial_baud\n"); | |
1858 | return -1; | |
1859 | } | |
1860 | /* Calculate the Divisor */ | |
1861 | ||
1862 | if (status) { | |
194343d9 | 1863 | dev_err(&port->dev, "%s - bad baud rate\n", __func__); |
3f542974 PS |
1864 | return status; |
1865 | } | |
1866 | /* Enable access to divisor latch */ | |
1867 | Data = mos7840_port->shadowLCR | SERIAL_LCR_DLAB; | |
1868 | mos7840_port->shadowLCR = Data; | |
1869 | mos7840_set_uart_reg(port, LINE_CONTROL_REGISTER, Data); | |
1870 | ||
1871 | /* Write the divisor */ | |
1872 | Data = (unsigned char)(divisor & 0xff); | |
1873 | dbg("set_serial_baud Value to write DLL is %x\n", Data); | |
1874 | mos7840_set_uart_reg(port, DIVISOR_LATCH_LSB, Data); | |
1875 | ||
1876 | Data = (unsigned char)((divisor & 0xff00) >> 8); | |
1877 | dbg("set_serial_baud Value to write DLM is %x\n", Data); | |
1878 | mos7840_set_uart_reg(port, DIVISOR_LATCH_MSB, Data); | |
1879 | ||
1880 | /* Disable access to divisor latch */ | |
1881 | Data = mos7840_port->shadowLCR & ~SERIAL_LCR_DLAB; | |
1882 | mos7840_port->shadowLCR = Data; | |
1883 | mos7840_set_uart_reg(port, LINE_CONTROL_REGISTER, Data); | |
1884 | ||
1885 | } | |
3f542974 PS |
1886 | return status; |
1887 | } | |
1888 | ||
1889 | /***************************************************************************** | |
1890 | * mos7840_change_port_settings | |
1891 | * This routine is called to set the UART on the device to match | |
1892 | * the specified new settings. | |
1893 | *****************************************************************************/ | |
1894 | ||
95da310e AC |
1895 | static void mos7840_change_port_settings(struct tty_struct *tty, |
1896 | struct moschip_port *mos7840_port, struct ktermios *old_termios) | |
3f542974 | 1897 | { |
3f542974 PS |
1898 | int baud; |
1899 | unsigned cflag; | |
1900 | unsigned iflag; | |
1901 | __u8 lData; | |
1902 | __u8 lParity; | |
1903 | __u8 lStop; | |
1904 | int status; | |
1905 | __u16 Data; | |
1906 | struct usb_serial_port *port; | |
1907 | struct usb_serial *serial; | |
1908 | ||
1909 | if (mos7840_port == NULL) | |
1910 | return; | |
1911 | ||
1912 | port = (struct usb_serial_port *)mos7840_port->port; | |
1913 | ||
441b62c1 | 1914 | if (mos7840_port_paranoia_check(port, __func__)) { |
3f542974 PS |
1915 | dbg("%s", "Invalid port \n"); |
1916 | return; | |
1917 | } | |
1918 | ||
441b62c1 | 1919 | if (mos7840_serial_paranoia_check(port->serial, __func__)) { |
3f542974 PS |
1920 | dbg("%s", "Invalid Serial \n"); |
1921 | return; | |
1922 | } | |
1923 | ||
1924 | serial = port->serial; | |
1925 | ||
441b62c1 | 1926 | dbg("%s - port %d", __func__, mos7840_port->port->number); |
3f542974 PS |
1927 | |
1928 | if (!mos7840_port->open) { | |
441b62c1 | 1929 | dbg("%s - port not opened", __func__); |
3f542974 PS |
1930 | return; |
1931 | } | |
1932 | ||
3f542974 PS |
1933 | dbg("%s", "Entering .......... \n"); |
1934 | ||
1935 | lData = LCR_BITS_8; | |
1936 | lStop = LCR_STOP_1; | |
1937 | lParity = LCR_PAR_NONE; | |
1938 | ||
1939 | cflag = tty->termios->c_cflag; | |
1940 | iflag = tty->termios->c_iflag; | |
1941 | ||
1942 | /* Change the number of bits */ | |
1943 | if (cflag & CSIZE) { | |
1944 | switch (cflag & CSIZE) { | |
1945 | case CS5: | |
1946 | lData = LCR_BITS_5; | |
1947 | break; | |
1948 | ||
1949 | case CS6: | |
1950 | lData = LCR_BITS_6; | |
1951 | break; | |
1952 | ||
1953 | case CS7: | |
1954 | lData = LCR_BITS_7; | |
1955 | break; | |
1956 | default: | |
1957 | case CS8: | |
1958 | lData = LCR_BITS_8; | |
1959 | break; | |
1960 | } | |
1961 | } | |
1962 | /* Change the Parity bit */ | |
1963 | if (cflag & PARENB) { | |
1964 | if (cflag & PARODD) { | |
1965 | lParity = LCR_PAR_ODD; | |
441b62c1 | 1966 | dbg("%s - parity = odd", __func__); |
3f542974 PS |
1967 | } else { |
1968 | lParity = LCR_PAR_EVEN; | |
441b62c1 | 1969 | dbg("%s - parity = even", __func__); |
3f542974 PS |
1970 | } |
1971 | ||
1972 | } else { | |
441b62c1 | 1973 | dbg("%s - parity = none", __func__); |
3f542974 PS |
1974 | } |
1975 | ||
880af9db | 1976 | if (cflag & CMSPAR) |
3f542974 | 1977 | lParity = lParity | 0x20; |
3f542974 PS |
1978 | |
1979 | /* Change the Stop bit */ | |
1980 | if (cflag & CSTOPB) { | |
1981 | lStop = LCR_STOP_2; | |
441b62c1 | 1982 | dbg("%s - stop bits = 2", __func__); |
3f542974 PS |
1983 | } else { |
1984 | lStop = LCR_STOP_1; | |
441b62c1 | 1985 | dbg("%s - stop bits = 1", __func__); |
3f542974 PS |
1986 | } |
1987 | ||
1988 | /* Update the LCR with the correct value */ | |
1989 | mos7840_port->shadowLCR &= | |
1990 | ~(LCR_BITS_MASK | LCR_STOP_MASK | LCR_PAR_MASK); | |
1991 | mos7840_port->shadowLCR |= (lData | lParity | lStop); | |
1992 | ||
1993 | dbg("mos7840_change_port_settings mos7840_port->shadowLCR is %x\n", | |
1994 | mos7840_port->shadowLCR); | |
1995 | /* Disable Interrupts */ | |
1996 | Data = 0x00; | |
1997 | mos7840_set_uart_reg(port, INTERRUPT_ENABLE_REGISTER, Data); | |
1998 | ||
1999 | Data = 0x00; | |
2000 | mos7840_set_uart_reg(port, FIFO_CONTROL_REGISTER, Data); | |
2001 | ||
2002 | Data = 0xcf; | |
2003 | mos7840_set_uart_reg(port, FIFO_CONTROL_REGISTER, Data); | |
2004 | ||
2005 | /* Send the updated LCR value to the mos7840 */ | |
2006 | Data = mos7840_port->shadowLCR; | |
2007 | ||
2008 | mos7840_set_uart_reg(port, LINE_CONTROL_REGISTER, Data); | |
2009 | ||
2010 | Data = 0x00b; | |
2011 | mos7840_port->shadowMCR = Data; | |
2012 | mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, Data); | |
2013 | Data = 0x00b; | |
2014 | mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, Data); | |
2015 | ||
2016 | /* set up the MCR register and send it to the mos7840 */ | |
2017 | ||
2018 | mos7840_port->shadowMCR = MCR_MASTER_IE; | |
880af9db | 2019 | if (cflag & CBAUD) |
3f542974 | 2020 | mos7840_port->shadowMCR |= (MCR_DTR | MCR_RTS); |
3f542974 | 2021 | |
880af9db | 2022 | if (cflag & CRTSCTS) |
3f542974 | 2023 | mos7840_port->shadowMCR |= (MCR_XON_ANY); |
880af9db | 2024 | else |
3f542974 | 2025 | mos7840_port->shadowMCR &= ~(MCR_XON_ANY); |
3f542974 PS |
2026 | |
2027 | Data = mos7840_port->shadowMCR; | |
2028 | mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, Data); | |
2029 | ||
2030 | /* Determine divisor based on baud rate */ | |
2031 | baud = tty_get_baud_rate(tty); | |
2032 | ||
2033 | if (!baud) { | |
2034 | /* pick a default, any default... */ | |
2035 | dbg("%s\n", "Picked default baud..."); | |
2036 | baud = 9600; | |
2037 | } | |
2038 | ||
441b62c1 | 2039 | dbg("%s - baud rate = %d", __func__, baud); |
3f542974 PS |
2040 | status = mos7840_send_cmd_write_baud_rate(mos7840_port, baud); |
2041 | ||
2042 | /* Enable Interrupts */ | |
2043 | Data = 0x0c; | |
2044 | mos7840_set_uart_reg(port, INTERRUPT_ENABLE_REGISTER, Data); | |
2045 | ||
2046 | if (mos7840_port->read_urb->status != -EINPROGRESS) { | |
2047 | mos7840_port->read_urb->dev = serial->dev; | |
2048 | ||
2049 | status = usb_submit_urb(mos7840_port->read_urb, GFP_ATOMIC); | |
2050 | ||
2051 | if (status) { | |
2052 | dbg(" usb_submit_urb(read bulk) failed, status = %d", | |
2053 | status); | |
2054 | } | |
2055 | } | |
2056 | wake_up(&mos7840_port->delta_msr_wait); | |
2057 | mos7840_port->delta_msr_cond = 1; | |
2058 | dbg("mos7840_change_port_settings mos7840_port->shadowLCR is End %x\n", | |
2059 | mos7840_port->shadowLCR); | |
2060 | ||
2061 | return; | |
2062 | } | |
2063 | ||
2064 | /***************************************************************************** | |
2065 | * mos7840_set_termios | |
2066 | * this function is called by the tty driver when it wants to change | |
2067 | * the termios structure | |
2068 | *****************************************************************************/ | |
2069 | ||
95da310e AC |
2070 | static void mos7840_set_termios(struct tty_struct *tty, |
2071 | struct usb_serial_port *port, | |
606d099c | 2072 | struct ktermios *old_termios) |
3f542974 PS |
2073 | { |
2074 | int status; | |
2075 | unsigned int cflag; | |
2076 | struct usb_serial *serial; | |
2077 | struct moschip_port *mos7840_port; | |
3f542974 | 2078 | dbg("mos7840_set_termios: START\n"); |
441b62c1 | 2079 | if (mos7840_port_paranoia_check(port, __func__)) { |
3f542974 PS |
2080 | dbg("%s", "Invalid port \n"); |
2081 | return; | |
2082 | } | |
2083 | ||
2084 | serial = port->serial; | |
2085 | ||
441b62c1 | 2086 | if (mos7840_serial_paranoia_check(serial, __func__)) { |
3f542974 PS |
2087 | dbg("%s", "Invalid Serial \n"); |
2088 | return; | |
2089 | } | |
2090 | ||
2091 | mos7840_port = mos7840_get_port_private(port); | |
2092 | ||
2093 | if (mos7840_port == NULL) | |
2094 | return; | |
2095 | ||
3f542974 | 2096 | if (!mos7840_port->open) { |
441b62c1 | 2097 | dbg("%s - port not opened", __func__); |
3f542974 PS |
2098 | return; |
2099 | } | |
2100 | ||
2101 | dbg("%s\n", "setting termios - "); | |
2102 | ||
2103 | cflag = tty->termios->c_cflag; | |
2104 | ||
441b62c1 | 2105 | dbg("%s - clfag %08x iflag %08x", __func__, |
3f542974 | 2106 | tty->termios->c_cflag, RELEVANT_IFLAG(tty->termios->c_iflag)); |
441b62c1 | 2107 | dbg("%s - old clfag %08x old iflag %08x", __func__, |
3d3ddce5 | 2108 | old_termios->c_cflag, RELEVANT_IFLAG(old_termios->c_iflag)); |
441b62c1 | 2109 | dbg("%s - port %d", __func__, port->number); |
3f542974 PS |
2110 | |
2111 | /* change the port settings to the new ones specified */ | |
2112 | ||
95da310e | 2113 | mos7840_change_port_settings(tty, mos7840_port, old_termios); |
3f542974 PS |
2114 | |
2115 | if (!mos7840_port->read_urb) { | |
2116 | dbg("%s", "URB KILLED !!!!!\n"); | |
2117 | return; | |
2118 | } | |
2119 | ||
2120 | if (mos7840_port->read_urb->status != -EINPROGRESS) { | |
2121 | mos7840_port->read_urb->dev = serial->dev; | |
2122 | status = usb_submit_urb(mos7840_port->read_urb, GFP_ATOMIC); | |
2123 | if (status) { | |
2124 | dbg(" usb_submit_urb(read bulk) failed, status = %d", | |
2125 | status); | |
2126 | } | |
2127 | } | |
2128 | return; | |
2129 | } | |
2130 | ||
2131 | /***************************************************************************** | |
2132 | * mos7840_get_lsr_info - get line status register info | |
2133 | * | |
2134 | * Purpose: Let user call ioctl() to get info when the UART physically | |
2135 | * is emptied. On bus types like RS485, the transmitter must | |
2136 | * release the bus after transmitting. This must be done when | |
2137 | * the transmit shift register is empty, not be done when the | |
2138 | * transmit holding register is empty. This functionality | |
2139 | * allows an RS485 driver to be written in user space. | |
2140 | *****************************************************************************/ | |
2141 | ||
95da310e | 2142 | static int mos7840_get_lsr_info(struct tty_struct *tty, |
97c4965d | 2143 | unsigned int __user *value) |
3f542974 PS |
2144 | { |
2145 | int count; | |
2146 | unsigned int result = 0; | |
2147 | ||
95da310e | 2148 | count = mos7840_chars_in_buffer(tty); |
3f542974 | 2149 | if (count == 0) { |
441b62c1 | 2150 | dbg("%s -- Empty", __func__); |
3f542974 PS |
2151 | result = TIOCSER_TEMT; |
2152 | } | |
2153 | ||
2154 | if (copy_to_user(value, &result, sizeof(int))) | |
2155 | return -EFAULT; | |
2156 | return 0; | |
2157 | } | |
2158 | ||
3f542974 PS |
2159 | /***************************************************************************** |
2160 | * mos7840_set_modem_info | |
2161 | * function to set modem info | |
2162 | *****************************************************************************/ | |
2163 | ||
95da310e AC |
2164 | /* FIXME: Should be using the model control hooks */ |
2165 | ||
3f542974 | 2166 | static int mos7840_set_modem_info(struct moschip_port *mos7840_port, |
97c4965d | 2167 | unsigned int cmd, unsigned int __user *value) |
3f542974 PS |
2168 | { |
2169 | unsigned int mcr; | |
2170 | unsigned int arg; | |
2171 | __u16 Data; | |
2172 | int status; | |
2173 | struct usb_serial_port *port; | |
2174 | ||
2175 | if (mos7840_port == NULL) | |
2176 | return -1; | |
2177 | ||
2178 | port = (struct usb_serial_port *)mos7840_port->port; | |
441b62c1 | 2179 | if (mos7840_port_paranoia_check(port, __func__)) { |
3f542974 PS |
2180 | dbg("%s", "Invalid port \n"); |
2181 | return -1; | |
2182 | } | |
2183 | ||
2184 | mcr = mos7840_port->shadowMCR; | |
2185 | ||
2186 | if (copy_from_user(&arg, value, sizeof(int))) | |
2187 | return -EFAULT; | |
2188 | ||
2189 | switch (cmd) { | |
2190 | case TIOCMBIS: | |
2191 | if (arg & TIOCM_RTS) | |
2192 | mcr |= MCR_RTS; | |
2193 | if (arg & TIOCM_DTR) | |
2194 | mcr |= MCR_RTS; | |
2195 | if (arg & TIOCM_LOOP) | |
2196 | mcr |= MCR_LOOPBACK; | |
2197 | break; | |
2198 | ||
2199 | case TIOCMBIC: | |
2200 | if (arg & TIOCM_RTS) | |
2201 | mcr &= ~MCR_RTS; | |
2202 | if (arg & TIOCM_DTR) | |
2203 | mcr &= ~MCR_RTS; | |
2204 | if (arg & TIOCM_LOOP) | |
2205 | mcr &= ~MCR_LOOPBACK; | |
2206 | break; | |
2207 | ||
2208 | case TIOCMSET: | |
2209 | /* turn off the RTS and DTR and LOOPBACK | |
2210 | * and then only turn on what was asked to */ | |
2211 | mcr &= ~(MCR_RTS | MCR_DTR | MCR_LOOPBACK); | |
2212 | mcr |= ((arg & TIOCM_RTS) ? MCR_RTS : 0); | |
2213 | mcr |= ((arg & TIOCM_DTR) ? MCR_DTR : 0); | |
2214 | mcr |= ((arg & TIOCM_LOOP) ? MCR_LOOPBACK : 0); | |
2215 | break; | |
2216 | } | |
2217 | ||
6b447f04 | 2218 | lock_kernel(); |
3f542974 PS |
2219 | mos7840_port->shadowMCR = mcr; |
2220 | ||
2221 | Data = mos7840_port->shadowMCR; | |
3f542974 | 2222 | status = mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, Data); |
6b447f04 | 2223 | unlock_kernel(); |
3f542974 PS |
2224 | if (status < 0) { |
2225 | dbg("setting MODEM_CONTROL_REGISTER Failed\n"); | |
2226 | return -1; | |
2227 | } | |
2228 | ||
2229 | return 0; | |
2230 | } | |
2231 | ||
2232 | /***************************************************************************** | |
2233 | * mos7840_get_modem_info | |
2234 | * function to get modem info | |
2235 | *****************************************************************************/ | |
2236 | ||
2237 | static int mos7840_get_modem_info(struct moschip_port *mos7840_port, | |
97c4965d | 2238 | unsigned int __user *value) |
3f542974 PS |
2239 | { |
2240 | unsigned int result = 0; | |
2241 | __u16 msr; | |
2242 | unsigned int mcr = mos7840_port->shadowMCR; | |
880af9db | 2243 | mos7840_get_uart_reg(mos7840_port->port, |
95da310e | 2244 | MODEM_STATUS_REGISTER, &msr); |
3f542974 PS |
2245 | result = ((mcr & MCR_DTR) ? TIOCM_DTR : 0) /* 0x002 */ |
2246 | |((mcr & MCR_RTS) ? TIOCM_RTS : 0) /* 0x004 */ | |
2247 | |((msr & MOS7840_MSR_CTS) ? TIOCM_CTS : 0) /* 0x020 */ | |
2248 | |((msr & MOS7840_MSR_CD) ? TIOCM_CAR : 0) /* 0x040 */ | |
2249 | |((msr & MOS7840_MSR_RI) ? TIOCM_RI : 0) /* 0x080 */ | |
2250 | |((msr & MOS7840_MSR_DSR) ? TIOCM_DSR : 0); /* 0x100 */ | |
2251 | ||
441b62c1 | 2252 | dbg("%s -- %x", __func__, result); |
3f542974 PS |
2253 | |
2254 | if (copy_to_user(value, &result, sizeof(int))) | |
2255 | return -EFAULT; | |
2256 | return 0; | |
2257 | } | |
2258 | ||
2259 | /***************************************************************************** | |
2260 | * mos7840_get_serial_info | |
2261 | * function to get information about serial port | |
2262 | *****************************************************************************/ | |
2263 | ||
2264 | static int mos7840_get_serial_info(struct moschip_port *mos7840_port, | |
97c4965d | 2265 | struct serial_struct __user *retinfo) |
3f542974 PS |
2266 | { |
2267 | struct serial_struct tmp; | |
2268 | ||
2269 | if (mos7840_port == NULL) | |
2270 | return -1; | |
2271 | ||
2272 | if (!retinfo) | |
2273 | return -EFAULT; | |
2274 | ||
2275 | memset(&tmp, 0, sizeof(tmp)); | |
2276 | ||
2277 | tmp.type = PORT_16550A; | |
2278 | tmp.line = mos7840_port->port->serial->minor; | |
2279 | tmp.port = mos7840_port->port->number; | |
2280 | tmp.irq = 0; | |
2281 | tmp.flags = ASYNC_SKIP_TEST | ASYNC_AUTO_IRQ; | |
2282 | tmp.xmit_fifo_size = NUM_URBS * URB_TRANSFER_BUFFER_SIZE; | |
2283 | tmp.baud_base = 9600; | |
2284 | tmp.close_delay = 5 * HZ; | |
2285 | tmp.closing_wait = 30 * HZ; | |
2286 | ||
2287 | if (copy_to_user(retinfo, &tmp, sizeof(*retinfo))) | |
2288 | return -EFAULT; | |
2289 | return 0; | |
2290 | } | |
2291 | ||
2292 | /***************************************************************************** | |
2293 | * SerialIoctl | |
2294 | * this function handles any ioctl calls to the driver | |
2295 | *****************************************************************************/ | |
2296 | ||
95da310e | 2297 | static int mos7840_ioctl(struct tty_struct *tty, struct file *file, |
3f542974 PS |
2298 | unsigned int cmd, unsigned long arg) |
2299 | { | |
95da310e | 2300 | struct usb_serial_port *port = tty->driver_data; |
97c4965d | 2301 | void __user *argp = (void __user *)arg; |
3f542974 | 2302 | struct moschip_port *mos7840_port; |
3f542974 PS |
2303 | |
2304 | struct async_icount cnow; | |
2305 | struct async_icount cprev; | |
2306 | struct serial_icounter_struct icount; | |
2307 | int mosret = 0; | |
3f542974 | 2308 | |
441b62c1 | 2309 | if (mos7840_port_paranoia_check(port, __func__)) { |
3f542974 PS |
2310 | dbg("%s", "Invalid port \n"); |
2311 | return -1; | |
2312 | } | |
2313 | ||
2314 | mos7840_port = mos7840_get_port_private(port); | |
3f542974 PS |
2315 | |
2316 | if (mos7840_port == NULL) | |
2317 | return -1; | |
2318 | ||
441b62c1 | 2319 | dbg("%s - port %d, cmd = 0x%x", __func__, port->number, cmd); |
3f542974 PS |
2320 | |
2321 | switch (cmd) { | |
2322 | /* return number of bytes available */ | |
2323 | ||
3f542974 | 2324 | case TIOCSERGETLSR: |
441b62c1 | 2325 | dbg("%s (%d) TIOCSERGETLSR", __func__, port->number); |
95da310e | 2326 | return mos7840_get_lsr_info(tty, argp); |
3f542974 PS |
2327 | return 0; |
2328 | ||
95da310e | 2329 | /* FIXME: use the modem hooks and remove this */ |
3f542974 PS |
2330 | case TIOCMBIS: |
2331 | case TIOCMBIC: | |
2332 | case TIOCMSET: | |
441b62c1 | 2333 | dbg("%s (%d) TIOCMSET/TIOCMBIC/TIOCMSET", __func__, |
3f542974 PS |
2334 | port->number); |
2335 | mosret = | |
97c4965d | 2336 | mos7840_set_modem_info(mos7840_port, cmd, argp); |
3f542974 PS |
2337 | return mosret; |
2338 | ||
2339 | case TIOCMGET: | |
441b62c1 | 2340 | dbg("%s (%d) TIOCMGET", __func__, port->number); |
97c4965d | 2341 | return mos7840_get_modem_info(mos7840_port, argp); |
3f542974 PS |
2342 | |
2343 | case TIOCGSERIAL: | |
441b62c1 | 2344 | dbg("%s (%d) TIOCGSERIAL", __func__, port->number); |
97c4965d | 2345 | return mos7840_get_serial_info(mos7840_port, argp); |
3f542974 PS |
2346 | |
2347 | case TIOCSSERIAL: | |
441b62c1 | 2348 | dbg("%s (%d) TIOCSSERIAL", __func__, port->number); |
3f542974 PS |
2349 | break; |
2350 | ||
2351 | case TIOCMIWAIT: | |
441b62c1 | 2352 | dbg("%s (%d) TIOCMIWAIT", __func__, port->number); |
3f542974 PS |
2353 | cprev = mos7840_port->icount; |
2354 | while (1) { | |
880af9db | 2355 | /* interruptible_sleep_on(&mos7840_port->delta_msr_wait); */ |
3f542974 PS |
2356 | mos7840_port->delta_msr_cond = 0; |
2357 | wait_event_interruptible(mos7840_port->delta_msr_wait, | |
2358 | (mos7840_port-> | |
2359 | delta_msr_cond == 1)); | |
2360 | ||
2361 | /* see if a signal did it */ | |
2362 | if (signal_pending(current)) | |
2363 | return -ERESTARTSYS; | |
2364 | cnow = mos7840_port->icount; | |
0de9a702 | 2365 | smp_rmb(); |
3f542974 PS |
2366 | if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr && |
2367 | cnow.dcd == cprev.dcd && cnow.cts == cprev.cts) | |
2368 | return -EIO; /* no change => error */ | |
2369 | if (((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) || | |
2370 | ((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) || | |
2371 | ((arg & TIOCM_CD) && (cnow.dcd != cprev.dcd)) || | |
2372 | ((arg & TIOCM_CTS) && (cnow.cts != cprev.cts))) { | |
2373 | return 0; | |
2374 | } | |
2375 | cprev = cnow; | |
2376 | } | |
2377 | /* NOTREACHED */ | |
2378 | break; | |
2379 | ||
2380 | case TIOCGICOUNT: | |
2381 | cnow = mos7840_port->icount; | |
0de9a702 | 2382 | smp_rmb(); |
3f542974 PS |
2383 | icount.cts = cnow.cts; |
2384 | icount.dsr = cnow.dsr; | |
2385 | icount.rng = cnow.rng; | |
2386 | icount.dcd = cnow.dcd; | |
2387 | icount.rx = cnow.rx; | |
2388 | icount.tx = cnow.tx; | |
2389 | icount.frame = cnow.frame; | |
2390 | icount.overrun = cnow.overrun; | |
2391 | icount.parity = cnow.parity; | |
2392 | icount.brk = cnow.brk; | |
2393 | icount.buf_overrun = cnow.buf_overrun; | |
2394 | ||
441b62c1 | 2395 | dbg("%s (%d) TIOCGICOUNT RX=%d, TX=%d", __func__, |
3f542974 | 2396 | port->number, icount.rx, icount.tx); |
97c4965d | 2397 | if (copy_to_user(argp, &icount, sizeof(icount))) |
3f542974 PS |
2398 | return -EFAULT; |
2399 | return 0; | |
3f542974 PS |
2400 | default: |
2401 | break; | |
2402 | } | |
3f542974 PS |
2403 | return -ENOIOCTLCMD; |
2404 | } | |
2405 | ||
2406 | static int mos7840_calc_num_ports(struct usb_serial *serial) | |
2407 | { | |
0de9a702 | 2408 | int mos7840_num_ports = 0; |
3f542974 PS |
2409 | |
2410 | dbg("numberofendpoints: %d \n", | |
2411 | (int)serial->interface->cur_altsetting->desc.bNumEndpoints); | |
2412 | dbg("numberofendpoints: %d \n", | |
2413 | (int)serial->interface->altsetting->desc.bNumEndpoints); | |
2414 | if (serial->interface->cur_altsetting->desc.bNumEndpoints == 5) { | |
0de9a702 | 2415 | mos7840_num_ports = serial->num_ports = 2; |
3f542974 | 2416 | } else if (serial->interface->cur_altsetting->desc.bNumEndpoints == 9) { |
0de9a702 ON |
2417 | serial->num_bulk_in = 4; |
2418 | serial->num_bulk_out = 4; | |
2419 | mos7840_num_ports = serial->num_ports = 4; | |
3f542974 PS |
2420 | } |
2421 | ||
2422 | return mos7840_num_ports; | |
2423 | } | |
2424 | ||
2425 | /**************************************************************************** | |
2426 | * mos7840_startup | |
2427 | ****************************************************************************/ | |
2428 | ||
2429 | static int mos7840_startup(struct usb_serial *serial) | |
2430 | { | |
2431 | struct moschip_port *mos7840_port; | |
2432 | struct usb_device *dev; | |
2433 | int i, status; | |
2434 | ||
2435 | __u16 Data; | |
2436 | dbg("%s \n", " mos7840_startup :entering.........."); | |
2437 | ||
2438 | if (!serial) { | |
2439 | dbg("%s\n", "Invalid Handler"); | |
2440 | return -1; | |
2441 | } | |
2442 | ||
2443 | dev = serial->dev; | |
2444 | ||
2445 | dbg("%s\n", "Entering..."); | |
2446 | ||
2447 | /* we set up the pointers to the endpoints in the mos7840_open * | |
2448 | * function, as the structures aren't created yet. */ | |
2449 | ||
2450 | /* set up port private structures */ | |
2451 | for (i = 0; i < serial->num_ports; ++i) { | |
7ac9da10 | 2452 | mos7840_port = kzalloc(sizeof(struct moschip_port), GFP_KERNEL); |
3f542974 | 2453 | if (mos7840_port == NULL) { |
194343d9 | 2454 | dev_err(&dev->dev, "%s - Out of memory\n", __func__); |
0de9a702 ON |
2455 | status = -ENOMEM; |
2456 | i--; /* don't follow NULL pointer cleaning up */ | |
2457 | goto error; | |
3f542974 | 2458 | } |
3f542974 | 2459 | |
880af9db AC |
2460 | /* Initialize all port interrupt end point to port 0 int |
2461 | * endpoint. Our device has only one interrupt end point | |
2462 | * common to all port */ | |
3f542974 PS |
2463 | |
2464 | mos7840_port->port = serial->port[i]; | |
2465 | mos7840_set_port_private(serial->port[i], mos7840_port); | |
0de9a702 | 2466 | spin_lock_init(&mos7840_port->pool_lock); |
3f542974 PS |
2467 | |
2468 | mos7840_port->port_num = ((serial->port[i]->number - | |
2469 | (serial->port[i]->serial->minor)) + | |
2470 | 1); | |
2471 | ||
2472 | if (mos7840_port->port_num == 1) { | |
2473 | mos7840_port->SpRegOffset = 0x0; | |
2474 | mos7840_port->ControlRegOffset = 0x1; | |
2475 | mos7840_port->DcrRegOffset = 0x4; | |
2476 | } else if ((mos7840_port->port_num == 2) | |
0de9a702 | 2477 | && (serial->num_ports == 4)) { |
3f542974 PS |
2478 | mos7840_port->SpRegOffset = 0x8; |
2479 | mos7840_port->ControlRegOffset = 0x9; | |
2480 | mos7840_port->DcrRegOffset = 0x16; | |
2481 | } else if ((mos7840_port->port_num == 2) | |
0de9a702 | 2482 | && (serial->num_ports == 2)) { |
3f542974 PS |
2483 | mos7840_port->SpRegOffset = 0xa; |
2484 | mos7840_port->ControlRegOffset = 0xb; | |
2485 | mos7840_port->DcrRegOffset = 0x19; | |
2486 | } else if ((mos7840_port->port_num == 3) | |
0de9a702 | 2487 | && (serial->num_ports == 4)) { |
3f542974 PS |
2488 | mos7840_port->SpRegOffset = 0xa; |
2489 | mos7840_port->ControlRegOffset = 0xb; | |
2490 | mos7840_port->DcrRegOffset = 0x19; | |
2491 | } else if ((mos7840_port->port_num == 4) | |
0de9a702 | 2492 | && (serial->num_ports == 4)) { |
3f542974 PS |
2493 | mos7840_port->SpRegOffset = 0xc; |
2494 | mos7840_port->ControlRegOffset = 0xd; | |
2495 | mos7840_port->DcrRegOffset = 0x1c; | |
2496 | } | |
2497 | mos7840_dump_serial_port(mos7840_port); | |
3f542974 PS |
2498 | mos7840_set_port_private(serial->port[i], mos7840_port); |
2499 | ||
880af9db AC |
2500 | /* enable rx_disable bit in control register */ |
2501 | status = mos7840_get_reg_sync(serial->port[i], | |
2502 | mos7840_port->ControlRegOffset, &Data); | |
3f542974 PS |
2503 | if (status < 0) { |
2504 | dbg("Reading ControlReg failed status-0x%x\n", status); | |
2505 | break; | |
2506 | } else | |
2507 | dbg("ControlReg Reading success val is %x, status%d\n", | |
2508 | Data, status); | |
880af9db AC |
2509 | Data |= 0x08; /* setting driver done bit */ |
2510 | Data |= 0x04; /* sp1_bit to have cts change reflect in | |
2511 | modem status reg */ | |
3f542974 | 2512 | |
880af9db AC |
2513 | /* Data |= 0x20; //rx_disable bit */ |
2514 | status = mos7840_set_reg_sync(serial->port[i], | |
3f542974 PS |
2515 | mos7840_port->ControlRegOffset, Data); |
2516 | if (status < 0) { | |
2517 | dbg("Writing ControlReg failed(rx_disable) status-0x%x\n", status); | |
2518 | break; | |
2519 | } else | |
2520 | dbg("ControlReg Writing success(rx_disable) status%d\n", | |
2521 | status); | |
2522 | ||
880af9db AC |
2523 | /* Write default values in DCR (i.e 0x01 in DCR0, 0x05 in DCR2 |
2524 | and 0x24 in DCR3 */ | |
3f542974 | 2525 | Data = 0x01; |
880af9db AC |
2526 | status = mos7840_set_reg_sync(serial->port[i], |
2527 | (__u16) (mos7840_port->DcrRegOffset + 0), Data); | |
3f542974 PS |
2528 | if (status < 0) { |
2529 | dbg("Writing DCR0 failed status-0x%x\n", status); | |
2530 | break; | |
2531 | } else | |
2532 | dbg("DCR0 Writing success status%d\n", status); | |
2533 | ||
2534 | Data = 0x05; | |
880af9db AC |
2535 | status = mos7840_set_reg_sync(serial->port[i], |
2536 | (__u16) (mos7840_port->DcrRegOffset + 1), Data); | |
3f542974 PS |
2537 | if (status < 0) { |
2538 | dbg("Writing DCR1 failed status-0x%x\n", status); | |
2539 | break; | |
2540 | } else | |
2541 | dbg("DCR1 Writing success status%d\n", status); | |
2542 | ||
2543 | Data = 0x24; | |
880af9db AC |
2544 | status = mos7840_set_reg_sync(serial->port[i], |
2545 | (__u16) (mos7840_port->DcrRegOffset + 2), Data); | |
3f542974 PS |
2546 | if (status < 0) { |
2547 | dbg("Writing DCR2 failed status-0x%x\n", status); | |
2548 | break; | |
2549 | } else | |
2550 | dbg("DCR2 Writing success status%d\n", status); | |
2551 | ||
880af9db | 2552 | /* write values in clkstart0x0 and clkmulti 0x20 */ |
3f542974 | 2553 | Data = 0x0; |
880af9db | 2554 | status = mos7840_set_reg_sync(serial->port[i], |
3f542974 PS |
2555 | CLK_START_VALUE_REGISTER, Data); |
2556 | if (status < 0) { | |
2557 | dbg("Writing CLK_START_VALUE_REGISTER failed status-0x%x\n", status); | |
2558 | break; | |
2559 | } else | |
2560 | dbg("CLK_START_VALUE_REGISTER Writing success status%d\n", status); | |
2561 | ||
2562 | Data = 0x20; | |
880af9db AC |
2563 | status = mos7840_set_reg_sync(serial->port[i], |
2564 | CLK_MULTI_REGISTER, Data); | |
3f542974 PS |
2565 | if (status < 0) { |
2566 | dbg("Writing CLK_MULTI_REGISTER failed status-0x%x\n", | |
2567 | status); | |
0de9a702 | 2568 | goto error; |
3f542974 PS |
2569 | } else |
2570 | dbg("CLK_MULTI_REGISTER Writing success status%d\n", | |
2571 | status); | |
2572 | ||
880af9db | 2573 | /* write value 0x0 to scratchpad register */ |
3f542974 | 2574 | Data = 0x00; |
880af9db AC |
2575 | status = mos7840_set_uart_reg(serial->port[i], |
2576 | SCRATCH_PAD_REGISTER, Data); | |
3f542974 PS |
2577 | if (status < 0) { |
2578 | dbg("Writing SCRATCH_PAD_REGISTER failed status-0x%x\n", | |
2579 | status); | |
2580 | break; | |
2581 | } else | |
2582 | dbg("SCRATCH_PAD_REGISTER Writing success status%d\n", | |
2583 | status); | |
2584 | ||
880af9db | 2585 | /* Zero Length flag register */ |
3f542974 | 2586 | if ((mos7840_port->port_num != 1) |
0de9a702 | 2587 | && (serial->num_ports == 2)) { |
3f542974 PS |
2588 | |
2589 | Data = 0xff; | |
3f542974 | 2590 | status = mos7840_set_reg_sync(serial->port[i], |
880af9db AC |
2591 | (__u16) (ZLP_REG1 + |
2592 | ((__u16)mos7840_port->port_num)), Data); | |
3f542974 PS |
2593 | dbg("ZLIP offset%x\n", |
2594 | (__u16) (ZLP_REG1 + | |
880af9db | 2595 | ((__u16) mos7840_port->port_num))); |
3f542974 PS |
2596 | if (status < 0) { |
2597 | dbg("Writing ZLP_REG%d failed status-0x%x\n", | |
2598 | i + 2, status); | |
2599 | break; | |
2600 | } else | |
2601 | dbg("ZLP_REG%d Writing success status%d\n", | |
2602 | i + 2, status); | |
2603 | } else { | |
2604 | Data = 0xff; | |
3f542974 | 2605 | status = mos7840_set_reg_sync(serial->port[i], |
880af9db AC |
2606 | (__u16) (ZLP_REG1 + |
2607 | ((__u16)mos7840_port->port_num) - 0x1), Data); | |
3f542974 PS |
2608 | dbg("ZLIP offset%x\n", |
2609 | (__u16) (ZLP_REG1 + | |
2610 | ((__u16) mos7840_port->port_num) - 0x1)); | |
2611 | if (status < 0) { | |
2612 | dbg("Writing ZLP_REG%d failed status-0x%x\n", | |
2613 | i + 1, status); | |
2614 | break; | |
2615 | } else | |
2616 | dbg("ZLP_REG%d Writing success status%d\n", | |
2617 | i + 1, status); | |
2618 | ||
2619 | } | |
0de9a702 | 2620 | mos7840_port->control_urb = usb_alloc_urb(0, GFP_KERNEL); |
3f542974 | 2621 | mos7840_port->ctrl_buf = kmalloc(16, GFP_KERNEL); |
880af9db AC |
2622 | mos7840_port->dr = kmalloc(sizeof(struct usb_ctrlrequest), |
2623 | GFP_KERNEL); | |
2624 | if (!mos7840_port->control_urb || !mos7840_port->ctrl_buf || | |
2625 | !mos7840_port->dr) { | |
0de9a702 ON |
2626 | status = -ENOMEM; |
2627 | goto error; | |
2628 | } | |
3f542974 PS |
2629 | } |
2630 | ||
880af9db | 2631 | /* Zero Length flag enable */ |
3f542974 | 2632 | Data = 0x0f; |
3f542974 PS |
2633 | status = mos7840_set_reg_sync(serial->port[0], ZLP_REG5, Data); |
2634 | if (status < 0) { | |
2635 | dbg("Writing ZLP_REG5 failed status-0x%x\n", status); | |
7ced46c3 | 2636 | goto error; |
3f542974 PS |
2637 | } else |
2638 | dbg("ZLP_REG5 Writing success status%d\n", status); | |
2639 | ||
2640 | /* setting configuration feature to one */ | |
2641 | usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), | |
97c4965d | 2642 | (__u8) 0x03, 0x00, 0x01, 0x00, NULL, 0x00, 5 * HZ); |
3f542974 | 2643 | return 0; |
0de9a702 ON |
2644 | error: |
2645 | for (/* nothing */; i >= 0; i--) { | |
2646 | mos7840_port = mos7840_get_port_private(serial->port[i]); | |
2647 | ||
2648 | kfree(mos7840_port->dr); | |
2649 | kfree(mos7840_port->ctrl_buf); | |
2650 | usb_free_urb(mos7840_port->control_urb); | |
2651 | kfree(mos7840_port); | |
2652 | serial->port[i] = NULL; | |
2653 | } | |
2654 | return status; | |
3f542974 PS |
2655 | } |
2656 | ||
2657 | /**************************************************************************** | |
2658 | * mos7840_shutdown | |
2659 | * This function is called whenever the device is removed from the usb bus. | |
2660 | ****************************************************************************/ | |
2661 | ||
2662 | static void mos7840_shutdown(struct usb_serial *serial) | |
2663 | { | |
2664 | int i; | |
0de9a702 | 2665 | unsigned long flags; |
3f542974 PS |
2666 | struct moschip_port *mos7840_port; |
2667 | dbg("%s \n", " shutdown :entering.........."); | |
2668 | ||
2669 | if (!serial) { | |
2670 | dbg("%s", "Invalid Handler \n"); | |
2671 | return; | |
2672 | } | |
2673 | ||
880af9db | 2674 | /* check for the ports to be closed,close the ports and disconnect */ |
3f542974 PS |
2675 | |
2676 | /* free private structure allocated for serial port * | |
2677 | * stop reads and writes on all ports */ | |
2678 | ||
2679 | for (i = 0; i < serial->num_ports; ++i) { | |
2680 | mos7840_port = mos7840_get_port_private(serial->port[i]); | |
0de9a702 ON |
2681 | spin_lock_irqsave(&mos7840_port->pool_lock, flags); |
2682 | mos7840_port->zombie = 1; | |
2683 | spin_unlock_irqrestore(&mos7840_port->pool_lock, flags); | |
3f542974 | 2684 | usb_kill_urb(mos7840_port->control_urb); |
0de9a702 ON |
2685 | kfree(mos7840_port->ctrl_buf); |
2686 | kfree(mos7840_port->dr); | |
3f542974 PS |
2687 | kfree(mos7840_port); |
2688 | mos7840_set_port_private(serial->port[i], NULL); | |
2689 | } | |
2690 | ||
2691 | dbg("%s\n", "Thank u :: "); | |
2692 | ||
2693 | } | |
2694 | ||
d9b1b787 JH |
2695 | static struct usb_driver io_driver = { |
2696 | .name = "mos7840", | |
2697 | .probe = usb_serial_probe, | |
2698 | .disconnect = usb_serial_disconnect, | |
2699 | .id_table = moschip_id_table_combined, | |
2700 | .no_dynamic_id = 1, | |
2701 | }; | |
2702 | ||
3f542974 PS |
2703 | static struct usb_serial_driver moschip7840_4port_device = { |
2704 | .driver = { | |
2705 | .owner = THIS_MODULE, | |
2706 | .name = "mos7840", | |
2707 | }, | |
2708 | .description = DRIVER_DESC, | |
d9b1b787 | 2709 | .usb_driver = &io_driver, |
3f542974 | 2710 | .id_table = moschip_port_id_table, |
3f542974 | 2711 | .num_ports = 4, |
3f542974 PS |
2712 | .open = mos7840_open, |
2713 | .close = mos7840_close, | |
2714 | .write = mos7840_write, | |
2715 | .write_room = mos7840_write_room, | |
2716 | .chars_in_buffer = mos7840_chars_in_buffer, | |
2717 | .throttle = mos7840_throttle, | |
2718 | .unthrottle = mos7840_unthrottle, | |
2719 | .calc_num_ports = mos7840_calc_num_ports, | |
2720 | #ifdef MCSSerialProbe | |
2721 | .probe = mos7840_serial_probe, | |
2722 | #endif | |
2723 | .ioctl = mos7840_ioctl, | |
2724 | .set_termios = mos7840_set_termios, | |
2725 | .break_ctl = mos7840_break, | |
2726 | .tiocmget = mos7840_tiocmget, | |
2727 | .tiocmset = mos7840_tiocmset, | |
2728 | .attach = mos7840_startup, | |
2729 | .shutdown = mos7840_shutdown, | |
2730 | .read_bulk_callback = mos7840_bulk_in_callback, | |
2731 | .read_int_callback = mos7840_interrupt_callback, | |
2732 | }; | |
2733 | ||
3f542974 PS |
2734 | /**************************************************************************** |
2735 | * moschip7840_init | |
2736 | * This is called by the module subsystem, or on startup to initialize us | |
2737 | ****************************************************************************/ | |
2738 | static int __init moschip7840_init(void) | |
2739 | { | |
2740 | int retval; | |
2741 | ||
2742 | dbg("%s \n", " mos7840_init :entering.........."); | |
2743 | ||
2744 | /* Register with the usb serial */ | |
2745 | retval = usb_serial_register(&moschip7840_4port_device); | |
2746 | ||
2747 | if (retval) | |
2748 | goto failed_port_device_register; | |
2749 | ||
2750 | dbg("%s\n", "Entring..."); | |
c197a8db GKH |
2751 | printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":" |
2752 | DRIVER_DESC "\n"); | |
3f542974 PS |
2753 | |
2754 | /* Register with the usb */ | |
2755 | retval = usb_register(&io_driver); | |
3f542974 PS |
2756 | if (retval == 0) { |
2757 | dbg("%s\n", "Leaving..."); | |
2758 | return 0; | |
2759 | } | |
3f542974 | 2760 | usb_serial_deregister(&moschip7840_4port_device); |
880af9db | 2761 | failed_port_device_register: |
3f542974 PS |
2762 | return retval; |
2763 | } | |
2764 | ||
2765 | /**************************************************************************** | |
2766 | * moschip7840_exit | |
2767 | * Called when the driver is about to be unloaded. | |
2768 | ****************************************************************************/ | |
2769 | static void __exit moschip7840_exit(void) | |
2770 | { | |
2771 | ||
2772 | dbg("%s \n", " mos7840_exit :entering.........."); | |
2773 | ||
2774 | usb_deregister(&io_driver); | |
2775 | ||
2776 | usb_serial_deregister(&moschip7840_4port_device); | |
2777 | ||
2778 | dbg("%s\n", "Entring..."); | |
2779 | } | |
2780 | ||
2781 | module_init(moschip7840_init); | |
2782 | module_exit(moschip7840_exit); | |
2783 | ||
2784 | /* Module information */ | |
2785 | MODULE_DESCRIPTION(DRIVER_DESC); | |
2786 | MODULE_LICENSE("GPL"); | |
2787 | ||
2788 | module_param(debug, bool, S_IRUGO | S_IWUSR); | |
2789 | MODULE_PARM_DESC(debug, "Debug enabled or not"); |