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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> | |
405f5571 | 29 | #include <linux/smp_lock.h> |
3f542974 PS |
30 | #include <linux/tty.h> |
31 | #include <linux/tty_driver.h> | |
32 | #include <linux/tty_flip.h> | |
33 | #include <linux/module.h> | |
34 | #include <linux/serial.h> | |
35 | #include <linux/usb.h> | |
36 | #include <linux/usb/serial.h> | |
880af9db | 37 | #include <linux/uaccess.h> |
3f542974 PS |
38 | |
39 | /* | |
40 | * Version Information | |
41 | */ | |
37768adf | 42 | #define DRIVER_VERSION "1.3.2" |
3f542974 PS |
43 | #define DRIVER_DESC "Moschip 7840/7820 USB Serial Driver" |
44 | ||
45 | /* | |
46 | * 16C50 UART register defines | |
47 | */ | |
48 | ||
49 | #define LCR_BITS_5 0x00 /* 5 bits/char */ | |
50 | #define LCR_BITS_6 0x01 /* 6 bits/char */ | |
51 | #define LCR_BITS_7 0x02 /* 7 bits/char */ | |
52 | #define LCR_BITS_8 0x03 /* 8 bits/char */ | |
53 | #define LCR_BITS_MASK 0x03 /* Mask for bits/char field */ | |
54 | ||
55 | #define LCR_STOP_1 0x00 /* 1 stop bit */ | |
56 | #define LCR_STOP_1_5 0x04 /* 1.5 stop bits (if 5 bits/char) */ | |
57 | #define LCR_STOP_2 0x04 /* 2 stop bits (if 6-8 bits/char) */ | |
58 | #define LCR_STOP_MASK 0x04 /* Mask for stop bits field */ | |
59 | ||
60 | #define LCR_PAR_NONE 0x00 /* No parity */ | |
61 | #define LCR_PAR_ODD 0x08 /* Odd parity */ | |
62 | #define LCR_PAR_EVEN 0x18 /* Even parity */ | |
63 | #define LCR_PAR_MARK 0x28 /* Force parity bit to 1 */ | |
64 | #define LCR_PAR_SPACE 0x38 /* Force parity bit to 0 */ | |
65 | #define LCR_PAR_MASK 0x38 /* Mask for parity field */ | |
66 | ||
67 | #define LCR_SET_BREAK 0x40 /* Set Break condition */ | |
68 | #define LCR_DL_ENABLE 0x80 /* Enable access to divisor latch */ | |
69 | ||
70 | #define MCR_DTR 0x01 /* Assert DTR */ | |
71 | #define MCR_RTS 0x02 /* Assert RTS */ | |
72 | #define MCR_OUT1 0x04 /* Loopback only: Sets state of RI */ | |
73 | #define MCR_MASTER_IE 0x08 /* Enable interrupt outputs */ | |
74 | #define MCR_LOOPBACK 0x10 /* Set internal (digital) loopback mode */ | |
75 | #define MCR_XON_ANY 0x20 /* Enable any char to exit XOFF mode */ | |
76 | ||
77 | #define MOS7840_MSR_CTS 0x10 /* Current state of CTS */ | |
78 | #define MOS7840_MSR_DSR 0x20 /* Current state of DSR */ | |
79 | #define MOS7840_MSR_RI 0x40 /* Current state of RI */ | |
80 | #define MOS7840_MSR_CD 0x80 /* Current state of CD */ | |
81 | ||
82 | /* | |
83 | * Defines used for sending commands to port | |
84 | */ | |
85 | ||
880af9db AC |
86 | #define WAIT_FOR_EVER (HZ * 0) /* timeout urb is wait for ever */ |
87 | #define MOS_WDR_TIMEOUT (HZ * 5) /* default urb timeout */ | |
3f542974 PS |
88 | |
89 | #define MOS_PORT1 0x0200 | |
90 | #define MOS_PORT2 0x0300 | |
91 | #define MOS_VENREG 0x0000 | |
92 | #define MOS_MAX_PORT 0x02 | |
93 | #define MOS_WRITE 0x0E | |
94 | #define MOS_READ 0x0D | |
95 | ||
96 | /* Requests */ | |
97 | #define MCS_RD_RTYPE 0xC0 | |
98 | #define MCS_WR_RTYPE 0x40 | |
99 | #define MCS_RDREQ 0x0D | |
100 | #define MCS_WRREQ 0x0E | |
101 | #define MCS_CTRL_TIMEOUT 500 | |
102 | #define VENDOR_READ_LENGTH (0x01) | |
103 | ||
104 | #define MAX_NAME_LEN 64 | |
105 | ||
880af9db AC |
106 | #define ZLP_REG1 0x3A /* Zero_Flag_Reg1 58 */ |
107 | #define ZLP_REG5 0x3E /* Zero_Flag_Reg5 62 */ | |
3f542974 PS |
108 | |
109 | /* For higher baud Rates use TIOCEXBAUD */ | |
110 | #define TIOCEXBAUD 0x5462 | |
111 | ||
112 | /* vendor id and device id defines */ | |
113 | ||
11e1abb4 | 114 | /* The native mos7840/7820 component */ |
3f542974 PS |
115 | #define USB_VENDOR_ID_MOSCHIP 0x9710 |
116 | #define MOSCHIP_DEVICE_ID_7840 0x7840 | |
117 | #define MOSCHIP_DEVICE_ID_7820 0x7820 | |
11e1abb4 DL |
118 | /* The native component can have its vendor/device id's overridden |
119 | * in vendor-specific implementations. Such devices can be handled | |
120 | * by making a change here, in moschip_port_id_table, and in | |
121 | * moschip_id_table_combined | |
122 | */ | |
123 | #define USB_VENDOR_ID_BANDB 0x0856 | |
124 | #define BANDB_DEVICE_ID_USOPTL4_4 0xAC44 | |
125 | #define BANDB_DEVICE_ID_USOPTL4_2 0xAC42 | |
3f542974 | 126 | |
9d498bea RL |
127 | /* This driver also supports |
128 | * ATEN UC2324 device using Moschip MCS7840 | |
129 | * ATEN UC2322 device using Moschip MCS7820 | |
130 | */ | |
e9b8cffa TC |
131 | #define USB_VENDOR_ID_ATENINTL 0x0557 |
132 | #define ATENINTL_DEVICE_ID_UC2324 0x2011 | |
9d498bea | 133 | #define ATENINTL_DEVICE_ID_UC2322 0x7820 |
e9b8cffa | 134 | |
11e1abb4 | 135 | /* Interrupt Routine Defines */ |
3f542974 PS |
136 | |
137 | #define SERIAL_IIR_RLS 0x06 | |
138 | #define SERIAL_IIR_MS 0x00 | |
139 | ||
140 | /* | |
141 | * Emulation of the bit mask on the LINE STATUS REGISTER. | |
142 | */ | |
143 | #define SERIAL_LSR_DR 0x0001 | |
144 | #define SERIAL_LSR_OE 0x0002 | |
145 | #define SERIAL_LSR_PE 0x0004 | |
146 | #define SERIAL_LSR_FE 0x0008 | |
147 | #define SERIAL_LSR_BI 0x0010 | |
148 | ||
149 | #define MOS_MSR_DELTA_CTS 0x10 | |
150 | #define MOS_MSR_DELTA_DSR 0x20 | |
151 | #define MOS_MSR_DELTA_RI 0x40 | |
152 | #define MOS_MSR_DELTA_CD 0x80 | |
153 | ||
880af9db | 154 | /* Serial Port register Address */ |
3f542974 PS |
155 | #define INTERRUPT_ENABLE_REGISTER ((__u16)(0x01)) |
156 | #define FIFO_CONTROL_REGISTER ((__u16)(0x02)) | |
157 | #define LINE_CONTROL_REGISTER ((__u16)(0x03)) | |
158 | #define MODEM_CONTROL_REGISTER ((__u16)(0x04)) | |
159 | #define LINE_STATUS_REGISTER ((__u16)(0x05)) | |
160 | #define MODEM_STATUS_REGISTER ((__u16)(0x06)) | |
161 | #define SCRATCH_PAD_REGISTER ((__u16)(0x07)) | |
162 | #define DIVISOR_LATCH_LSB ((__u16)(0x00)) | |
163 | #define DIVISOR_LATCH_MSB ((__u16)(0x01)) | |
164 | ||
165 | #define CLK_MULTI_REGISTER ((__u16)(0x02)) | |
166 | #define CLK_START_VALUE_REGISTER ((__u16)(0x03)) | |
167 | ||
168 | #define SERIAL_LCR_DLAB ((__u16)(0x0080)) | |
169 | ||
170 | /* | |
171 | * URB POOL related defines | |
172 | */ | |
173 | #define NUM_URBS 16 /* URB Count */ | |
174 | #define URB_TRANSFER_BUFFER_SIZE 32 /* URB Size */ | |
175 | ||
176 | ||
177 | static struct usb_device_id moschip_port_id_table[] = { | |
178 | {USB_DEVICE(USB_VENDOR_ID_MOSCHIP, MOSCHIP_DEVICE_ID_7840)}, | |
179 | {USB_DEVICE(USB_VENDOR_ID_MOSCHIP, MOSCHIP_DEVICE_ID_7820)}, | |
11e1abb4 DL |
180 | {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USOPTL4_4)}, |
181 | {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USOPTL4_2)}, | |
e9b8cffa | 182 | {USB_DEVICE(USB_VENDOR_ID_ATENINTL, ATENINTL_DEVICE_ID_UC2324)}, |
9d498bea | 183 | {USB_DEVICE(USB_VENDOR_ID_ATENINTL, ATENINTL_DEVICE_ID_UC2322)}, |
3f542974 PS |
184 | {} /* terminating entry */ |
185 | }; | |
186 | ||
187 | static __devinitdata struct usb_device_id moschip_id_table_combined[] = { | |
188 | {USB_DEVICE(USB_VENDOR_ID_MOSCHIP, MOSCHIP_DEVICE_ID_7840)}, | |
189 | {USB_DEVICE(USB_VENDOR_ID_MOSCHIP, MOSCHIP_DEVICE_ID_7820)}, | |
11e1abb4 DL |
190 | {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USOPTL4_4)}, |
191 | {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USOPTL4_2)}, | |
e9b8cffa | 192 | {USB_DEVICE(USB_VENDOR_ID_ATENINTL, ATENINTL_DEVICE_ID_UC2324)}, |
9d498bea | 193 | {USB_DEVICE(USB_VENDOR_ID_ATENINTL, ATENINTL_DEVICE_ID_UC2322)}, |
3f542974 PS |
194 | {} /* terminating entry */ |
195 | }; | |
196 | ||
197 | MODULE_DEVICE_TABLE(usb, moschip_id_table_combined); | |
198 | ||
199 | /* This structure holds all of the local port information */ | |
200 | ||
201 | struct moschip_port { | |
202 | int port_num; /*Actual port number in the device(1,2,etc) */ | |
203 | struct urb *write_urb; /* write URB for this port */ | |
204 | struct urb *read_urb; /* read URB for this port */ | |
0de9a702 | 205 | struct urb *int_urb; |
3f542974 PS |
206 | __u8 shadowLCR; /* last LCR value received */ |
207 | __u8 shadowMCR; /* last MCR value received */ | |
208 | char open; | |
0de9a702 ON |
209 | char open_ports; |
210 | char zombie; | |
3f542974 PS |
211 | wait_queue_head_t wait_chase; /* for handling sleeping while waiting for chase to finish */ |
212 | wait_queue_head_t delta_msr_wait; /* for handling sleeping while waiting for msr change to happen */ | |
213 | int delta_msr_cond; | |
214 | struct async_icount icount; | |
215 | struct usb_serial_port *port; /* loop back to the owner of this object */ | |
216 | ||
880af9db | 217 | /* Offsets */ |
3f542974 PS |
218 | __u8 SpRegOffset; |
219 | __u8 ControlRegOffset; | |
220 | __u8 DcrRegOffset; | |
880af9db | 221 | /* for processing control URBS in interrupt context */ |
3f542974 | 222 | struct urb *control_urb; |
0de9a702 | 223 | struct usb_ctrlrequest *dr; |
3f542974 PS |
224 | char *ctrl_buf; |
225 | int MsrLsr; | |
226 | ||
0de9a702 | 227 | spinlock_t pool_lock; |
3f542974 | 228 | struct urb *write_urb_pool[NUM_URBS]; |
0de9a702 | 229 | char busy[NUM_URBS]; |
50de36f7 | 230 | bool read_urb_busy; |
3f542974 PS |
231 | }; |
232 | ||
233 | ||
234 | static int debug; | |
3f542974 PS |
235 | |
236 | /* | |
237 | * mos7840_set_reg_sync | |
238 | * To set the Control register by calling usb_fill_control_urb function | |
239 | * by passing usb_sndctrlpipe function as parameter. | |
240 | */ | |
241 | ||
242 | static int mos7840_set_reg_sync(struct usb_serial_port *port, __u16 reg, | |
243 | __u16 val) | |
244 | { | |
245 | struct usb_device *dev = port->serial->dev; | |
246 | val = val & 0x00ff; | |
84fe6e79 | 247 | dbg("mos7840_set_reg_sync offset is %x, value %x", reg, val); |
3f542974 PS |
248 | |
249 | return usb_control_msg(dev, usb_sndctrlpipe(dev, 0), MCS_WRREQ, | |
250 | MCS_WR_RTYPE, val, reg, NULL, 0, | |
251 | MOS_WDR_TIMEOUT); | |
252 | } | |
253 | ||
254 | /* | |
255 | * mos7840_get_reg_sync | |
256 | * To set the Uart register by calling usb_fill_control_urb function by | |
257 | * passing usb_rcvctrlpipe function as parameter. | |
258 | */ | |
259 | ||
260 | static int mos7840_get_reg_sync(struct usb_serial_port *port, __u16 reg, | |
880af9db | 261 | __u16 *val) |
3f542974 PS |
262 | { |
263 | struct usb_device *dev = port->serial->dev; | |
264 | int ret = 0; | |
265 | ||
266 | ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), MCS_RDREQ, | |
267 | MCS_RD_RTYPE, 0, reg, val, VENDOR_READ_LENGTH, | |
268 | MOS_WDR_TIMEOUT); | |
84fe6e79 | 269 | dbg("mos7840_get_reg_sync offset is %x, return val %x", reg, *val); |
3f542974 PS |
270 | *val = (*val) & 0x00ff; |
271 | return ret; | |
272 | } | |
273 | ||
274 | /* | |
275 | * mos7840_set_uart_reg | |
276 | * To set the Uart register by calling usb_fill_control_urb function by | |
277 | * passing usb_sndctrlpipe function as parameter. | |
278 | */ | |
279 | ||
280 | static int mos7840_set_uart_reg(struct usb_serial_port *port, __u16 reg, | |
281 | __u16 val) | |
282 | { | |
283 | ||
284 | struct usb_device *dev = port->serial->dev; | |
285 | val = val & 0x00ff; | |
880af9db AC |
286 | /* For the UART control registers, the application number need |
287 | to be Or'ed */ | |
0de9a702 | 288 | if (port->serial->num_ports == 4) { |
880af9db AC |
289 | val |= (((__u16) port->number - |
290 | (__u16) (port->serial->minor)) + 1) << 8; | |
84fe6e79 | 291 | dbg("mos7840_set_uart_reg application number is %x", val); |
3f542974 PS |
292 | } else { |
293 | if (((__u16) port->number - (__u16) (port->serial->minor)) == 0) { | |
880af9db | 294 | val |= (((__u16) port->number - |
3f542974 | 295 | (__u16) (port->serial->minor)) + 1) << 8; |
84fe6e79 | 296 | dbg("mos7840_set_uart_reg application number is %x", |
3f542974 PS |
297 | val); |
298 | } else { | |
299 | val |= | |
300 | (((__u16) port->number - | |
301 | (__u16) (port->serial->minor)) + 2) << 8; | |
84fe6e79 | 302 | dbg("mos7840_set_uart_reg application number is %x", |
3f542974 PS |
303 | val); |
304 | } | |
305 | } | |
306 | return usb_control_msg(dev, usb_sndctrlpipe(dev, 0), MCS_WRREQ, | |
307 | MCS_WR_RTYPE, val, reg, NULL, 0, | |
308 | MOS_WDR_TIMEOUT); | |
309 | ||
310 | } | |
311 | ||
312 | /* | |
313 | * mos7840_get_uart_reg | |
314 | * To set the Control register by calling usb_fill_control_urb function | |
315 | * by passing usb_rcvctrlpipe function as parameter. | |
316 | */ | |
317 | static int mos7840_get_uart_reg(struct usb_serial_port *port, __u16 reg, | |
880af9db | 318 | __u16 *val) |
3f542974 PS |
319 | { |
320 | struct usb_device *dev = port->serial->dev; | |
321 | int ret = 0; | |
322 | __u16 Wval; | |
323 | ||
84fe6e79 | 324 | /* dbg("application number is %4x", |
880af9db AC |
325 | (((__u16)port->number - (__u16)(port->serial->minor))+1)<<8); */ |
326 | /* Wval is same as application number */ | |
0de9a702 | 327 | if (port->serial->num_ports == 4) { |
3f542974 PS |
328 | Wval = |
329 | (((__u16) port->number - (__u16) (port->serial->minor)) + | |
330 | 1) << 8; | |
84fe6e79 | 331 | dbg("mos7840_get_uart_reg application number is %x", Wval); |
3f542974 PS |
332 | } else { |
333 | if (((__u16) port->number - (__u16) (port->serial->minor)) == 0) { | |
880af9db | 334 | Wval = (((__u16) port->number - |
3f542974 | 335 | (__u16) (port->serial->minor)) + 1) << 8; |
84fe6e79 | 336 | dbg("mos7840_get_uart_reg application number is %x", |
3f542974 PS |
337 | Wval); |
338 | } else { | |
880af9db | 339 | Wval = (((__u16) port->number - |
3f542974 | 340 | (__u16) (port->serial->minor)) + 2) << 8; |
84fe6e79 | 341 | dbg("mos7840_get_uart_reg application number is %x", |
3f542974 PS |
342 | Wval); |
343 | } | |
344 | } | |
345 | ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), MCS_RDREQ, | |
346 | MCS_RD_RTYPE, Wval, reg, val, VENDOR_READ_LENGTH, | |
347 | MOS_WDR_TIMEOUT); | |
348 | *val = (*val) & 0x00ff; | |
349 | return ret; | |
350 | } | |
351 | ||
352 | static void mos7840_dump_serial_port(struct moschip_port *mos7840_port) | |
353 | { | |
354 | ||
84fe6e79 TC |
355 | dbg("***************************************"); |
356 | dbg("SpRegOffset is %2x", mos7840_port->SpRegOffset); | |
357 | dbg("ControlRegOffset is %2x", mos7840_port->ControlRegOffset); | |
358 | dbg("DCRRegOffset is %2x", mos7840_port->DcrRegOffset); | |
359 | dbg("***************************************"); | |
3f542974 PS |
360 | |
361 | } | |
362 | ||
363 | /************************************************************************/ | |
364 | /************************************************************************/ | |
365 | /* I N T E R F A C E F U N C T I O N S */ | |
366 | /* I N T E R F A C E F U N C T I O N S */ | |
367 | /************************************************************************/ | |
368 | /************************************************************************/ | |
369 | ||
370 | static inline void mos7840_set_port_private(struct usb_serial_port *port, | |
371 | struct moschip_port *data) | |
372 | { | |
373 | usb_set_serial_port_data(port, (void *)data); | |
374 | } | |
375 | ||
376 | static inline struct moschip_port *mos7840_get_port_private(struct | |
377 | usb_serial_port | |
378 | *port) | |
379 | { | |
380 | return (struct moschip_port *)usb_get_serial_port_data(port); | |
381 | } | |
382 | ||
0de9a702 | 383 | static void mos7840_handle_new_msr(struct moschip_port *port, __u8 new_msr) |
3f542974 PS |
384 | { |
385 | struct moschip_port *mos7840_port; | |
386 | struct async_icount *icount; | |
387 | mos7840_port = port; | |
388 | icount = &mos7840_port->icount; | |
389 | if (new_msr & | |
390 | (MOS_MSR_DELTA_CTS | MOS_MSR_DELTA_DSR | MOS_MSR_DELTA_RI | | |
391 | MOS_MSR_DELTA_CD)) { | |
392 | icount = &mos7840_port->icount; | |
393 | ||
394 | /* update input line counters */ | |
395 | if (new_msr & MOS_MSR_DELTA_CTS) { | |
396 | icount->cts++; | |
0de9a702 | 397 | smp_wmb(); |
3f542974 PS |
398 | } |
399 | if (new_msr & MOS_MSR_DELTA_DSR) { | |
400 | icount->dsr++; | |
0de9a702 | 401 | smp_wmb(); |
3f542974 PS |
402 | } |
403 | if (new_msr & MOS_MSR_DELTA_CD) { | |
404 | icount->dcd++; | |
0de9a702 | 405 | smp_wmb(); |
3f542974 PS |
406 | } |
407 | if (new_msr & MOS_MSR_DELTA_RI) { | |
408 | icount->rng++; | |
0de9a702 | 409 | smp_wmb(); |
3f542974 PS |
410 | } |
411 | } | |
3f542974 PS |
412 | } |
413 | ||
0de9a702 | 414 | static void mos7840_handle_new_lsr(struct moschip_port *port, __u8 new_lsr) |
3f542974 PS |
415 | { |
416 | struct async_icount *icount; | |
417 | ||
441b62c1 | 418 | dbg("%s - %02x", __func__, new_lsr); |
3f542974 PS |
419 | |
420 | if (new_lsr & SERIAL_LSR_BI) { | |
880af9db AC |
421 | /* |
422 | * Parity and Framing errors only count if they | |
423 | * occur exclusive of a break being | |
424 | * received. | |
425 | */ | |
3f542974 PS |
426 | new_lsr &= (__u8) (SERIAL_LSR_OE | SERIAL_LSR_BI); |
427 | } | |
428 | ||
429 | /* update input line counters */ | |
430 | icount = &port->icount; | |
431 | if (new_lsr & SERIAL_LSR_BI) { | |
432 | icount->brk++; | |
0de9a702 | 433 | smp_wmb(); |
3f542974 PS |
434 | } |
435 | if (new_lsr & SERIAL_LSR_OE) { | |
436 | icount->overrun++; | |
0de9a702 | 437 | smp_wmb(); |
3f542974 PS |
438 | } |
439 | if (new_lsr & SERIAL_LSR_PE) { | |
440 | icount->parity++; | |
0de9a702 | 441 | smp_wmb(); |
3f542974 PS |
442 | } |
443 | if (new_lsr & SERIAL_LSR_FE) { | |
444 | icount->frame++; | |
0de9a702 | 445 | smp_wmb(); |
3f542974 | 446 | } |
3f542974 PS |
447 | } |
448 | ||
449 | /************************************************************************/ | |
450 | /************************************************************************/ | |
451 | /* U S B C A L L B A C K F U N C T I O N S */ | |
452 | /* U S B C A L L B A C K F U N C T I O N S */ | |
453 | /************************************************************************/ | |
454 | /************************************************************************/ | |
455 | ||
7d12e780 | 456 | static void mos7840_control_callback(struct urb *urb) |
3f542974 PS |
457 | { |
458 | unsigned char *data; | |
459 | struct moschip_port *mos7840_port; | |
460 | __u8 regval = 0x0; | |
0de9a702 | 461 | int result = 0; |
0643c724 | 462 | int status = urb->status; |
3f542974 | 463 | |
cdc97792 | 464 | mos7840_port = urb->context; |
0de9a702 | 465 | |
0643c724 | 466 | switch (status) { |
3f542974 PS |
467 | case 0: |
468 | /* success */ | |
469 | break; | |
470 | case -ECONNRESET: | |
471 | case -ENOENT: | |
472 | case -ESHUTDOWN: | |
473 | /* this urb is terminated, clean up */ | |
441b62c1 | 474 | dbg("%s - urb shutting down with status: %d", __func__, |
0643c724 | 475 | status); |
3f542974 PS |
476 | return; |
477 | default: | |
441b62c1 | 478 | dbg("%s - nonzero urb status received: %d", __func__, |
0643c724 | 479 | status); |
3f542974 PS |
480 | goto exit; |
481 | } | |
482 | ||
84fe6e79 TC |
483 | dbg("%s urb buffer size is %d", __func__, urb->actual_length); |
484 | dbg("%s mos7840_port->MsrLsr is %d port %d", __func__, | |
3f542974 PS |
485 | mos7840_port->MsrLsr, mos7840_port->port_num); |
486 | data = urb->transfer_buffer; | |
487 | regval = (__u8) data[0]; | |
84fe6e79 | 488 | dbg("%s data is %x", __func__, regval); |
3f542974 PS |
489 | if (mos7840_port->MsrLsr == 0) |
490 | mos7840_handle_new_msr(mos7840_port, regval); | |
491 | else if (mos7840_port->MsrLsr == 1) | |
492 | mos7840_handle_new_lsr(mos7840_port, regval); | |
493 | ||
0de9a702 ON |
494 | exit: |
495 | spin_lock(&mos7840_port->pool_lock); | |
496 | if (!mos7840_port->zombie) | |
497 | result = usb_submit_urb(mos7840_port->int_urb, GFP_ATOMIC); | |
498 | spin_unlock(&mos7840_port->pool_lock); | |
499 | if (result) { | |
500 | dev_err(&urb->dev->dev, | |
501 | "%s - Error %d submitting interrupt urb\n", | |
441b62c1 | 502 | __func__, result); |
0de9a702 | 503 | } |
3f542974 PS |
504 | } |
505 | ||
506 | static int mos7840_get_reg(struct moschip_port *mcs, __u16 Wval, __u16 reg, | |
880af9db | 507 | __u16 *val) |
3f542974 PS |
508 | { |
509 | struct usb_device *dev = mcs->port->serial->dev; | |
0de9a702 ON |
510 | struct usb_ctrlrequest *dr = mcs->dr; |
511 | unsigned char *buffer = mcs->ctrl_buf; | |
512 | int ret; | |
3f542974 | 513 | |
3f542974 PS |
514 | dr->bRequestType = MCS_RD_RTYPE; |
515 | dr->bRequest = MCS_RDREQ; | |
880af9db | 516 | dr->wValue = cpu_to_le16(Wval); /* 0 */ |
3f542974 PS |
517 | dr->wIndex = cpu_to_le16(reg); |
518 | dr->wLength = cpu_to_le16(2); | |
519 | ||
520 | usb_fill_control_urb(mcs->control_urb, dev, usb_rcvctrlpipe(dev, 0), | |
521 | (unsigned char *)dr, buffer, 2, | |
522 | mos7840_control_callback, mcs); | |
523 | mcs->control_urb->transfer_buffer_length = 2; | |
524 | ret = usb_submit_urb(mcs->control_urb, GFP_ATOMIC); | |
525 | return ret; | |
526 | } | |
527 | ||
528 | /***************************************************************************** | |
529 | * mos7840_interrupt_callback | |
530 | * this is the callback function for when we have received data on the | |
531 | * interrupt endpoint. | |
532 | *****************************************************************************/ | |
533 | ||
7d12e780 | 534 | static void mos7840_interrupt_callback(struct urb *urb) |
3f542974 PS |
535 | { |
536 | int result; | |
537 | int length; | |
538 | struct moschip_port *mos7840_port; | |
539 | struct usb_serial *serial; | |
540 | __u16 Data; | |
541 | unsigned char *data; | |
542 | __u8 sp[5], st; | |
0de9a702 ON |
543 | int i, rv = 0; |
544 | __u16 wval, wreg = 0; | |
0643c724 | 545 | int status = urb->status; |
3f542974 | 546 | |
84fe6e79 | 547 | dbg("%s", " : Entering"); |
3f542974 | 548 | |
0643c724 | 549 | switch (status) { |
3f542974 PS |
550 | case 0: |
551 | /* success */ | |
552 | break; | |
553 | case -ECONNRESET: | |
554 | case -ENOENT: | |
555 | case -ESHUTDOWN: | |
556 | /* this urb is terminated, clean up */ | |
441b62c1 | 557 | dbg("%s - urb shutting down with status: %d", __func__, |
0643c724 | 558 | status); |
3f542974 PS |
559 | return; |
560 | default: | |
441b62c1 | 561 | dbg("%s - nonzero urb status received: %d", __func__, |
0643c724 | 562 | status); |
3f542974 PS |
563 | goto exit; |
564 | } | |
565 | ||
566 | length = urb->actual_length; | |
567 | data = urb->transfer_buffer; | |
568 | ||
cdc97792 | 569 | serial = urb->context; |
3f542974 PS |
570 | |
571 | /* Moschip get 5 bytes | |
572 | * Byte 1 IIR Port 1 (port.number is 0) | |
573 | * Byte 2 IIR Port 2 (port.number is 1) | |
574 | * Byte 3 IIR Port 3 (port.number is 2) | |
575 | * Byte 4 IIR Port 4 (port.number is 3) | |
576 | * Byte 5 FIFO status for both */ | |
577 | ||
578 | if (length && length > 5) { | |
84fe6e79 | 579 | dbg("%s", "Wrong data !!!"); |
3f542974 PS |
580 | return; |
581 | } | |
582 | ||
583 | sp[0] = (__u8) data[0]; | |
584 | sp[1] = (__u8) data[1]; | |
585 | sp[2] = (__u8) data[2]; | |
586 | sp[3] = (__u8) data[3]; | |
587 | st = (__u8) data[4]; | |
588 | ||
589 | for (i = 0; i < serial->num_ports; i++) { | |
590 | mos7840_port = mos7840_get_port_private(serial->port[i]); | |
591 | wval = | |
592 | (((__u16) serial->port[i]->number - | |
593 | (__u16) (serial->minor)) + 1) << 8; | |
594 | if (mos7840_port->open) { | |
595 | if (sp[i] & 0x01) { | |
84fe6e79 | 596 | dbg("SP%d No Interrupt !!!", i); |
3f542974 PS |
597 | } else { |
598 | switch (sp[i] & 0x0f) { | |
599 | case SERIAL_IIR_RLS: | |
600 | dbg("Serial Port %d: Receiver status error or ", i); | |
84fe6e79 | 601 | dbg("address bit detected in 9-bit mode"); |
3f542974 | 602 | mos7840_port->MsrLsr = 1; |
0de9a702 | 603 | wreg = LINE_STATUS_REGISTER; |
3f542974 PS |
604 | break; |
605 | case SERIAL_IIR_MS: | |
84fe6e79 | 606 | dbg("Serial Port %d: Modem status change", i); |
3f542974 | 607 | mos7840_port->MsrLsr = 0; |
0de9a702 | 608 | wreg = MODEM_STATUS_REGISTER; |
3f542974 PS |
609 | break; |
610 | } | |
0de9a702 ON |
611 | spin_lock(&mos7840_port->pool_lock); |
612 | if (!mos7840_port->zombie) { | |
613 | rv = mos7840_get_reg(mos7840_port, wval, wreg, &Data); | |
614 | } else { | |
615 | spin_unlock(&mos7840_port->pool_lock); | |
616 | return; | |
617 | } | |
618 | spin_unlock(&mos7840_port->pool_lock); | |
3f542974 PS |
619 | } |
620 | } | |
621 | } | |
880af9db AC |
622 | if (!(rv < 0)) |
623 | /* the completion handler for the control urb will resubmit */ | |
0de9a702 ON |
624 | return; |
625 | exit: | |
3f542974 PS |
626 | result = usb_submit_urb(urb, GFP_ATOMIC); |
627 | if (result) { | |
628 | dev_err(&urb->dev->dev, | |
629 | "%s - Error %d submitting interrupt urb\n", | |
441b62c1 | 630 | __func__, result); |
3f542974 | 631 | } |
3f542974 PS |
632 | } |
633 | ||
634 | static int mos7840_port_paranoia_check(struct usb_serial_port *port, | |
635 | const char *function) | |
636 | { | |
637 | if (!port) { | |
638 | dbg("%s - port == NULL", function); | |
639 | return -1; | |
640 | } | |
641 | if (!port->serial) { | |
642 | dbg("%s - port->serial == NULL", function); | |
643 | return -1; | |
644 | } | |
645 | ||
646 | return 0; | |
647 | } | |
648 | ||
649 | /* Inline functions to check the sanity of a pointer that is passed to us */ | |
650 | static int mos7840_serial_paranoia_check(struct usb_serial *serial, | |
651 | const char *function) | |
652 | { | |
653 | if (!serial) { | |
654 | dbg("%s - serial == NULL", function); | |
655 | return -1; | |
656 | } | |
657 | if (!serial->type) { | |
658 | dbg("%s - serial->type == NULL!", function); | |
659 | return -1; | |
660 | } | |
661 | ||
662 | return 0; | |
663 | } | |
664 | ||
665 | static struct usb_serial *mos7840_get_usb_serial(struct usb_serial_port *port, | |
666 | const char *function) | |
667 | { | |
668 | /* if no port was specified, or it fails a paranoia check */ | |
669 | if (!port || | |
670 | mos7840_port_paranoia_check(port, function) || | |
671 | mos7840_serial_paranoia_check(port->serial, function)) { | |
880af9db AC |
672 | /* then say that we don't have a valid usb_serial thing, |
673 | * which will end up genrating -ENODEV return values */ | |
3f542974 PS |
674 | return NULL; |
675 | } | |
676 | ||
677 | return port->serial; | |
678 | } | |
679 | ||
680 | /***************************************************************************** | |
681 | * mos7840_bulk_in_callback | |
682 | * this is the callback function for when we have received data on the | |
683 | * bulk in endpoint. | |
684 | *****************************************************************************/ | |
685 | ||
7d12e780 | 686 | static void mos7840_bulk_in_callback(struct urb *urb) |
3f542974 | 687 | { |
0643c724 | 688 | int retval; |
3f542974 PS |
689 | unsigned char *data; |
690 | struct usb_serial *serial; | |
691 | struct usb_serial_port *port; | |
692 | struct moschip_port *mos7840_port; | |
693 | struct tty_struct *tty; | |
0643c724 | 694 | int status = urb->status; |
3f542974 | 695 | |
cdc97792 | 696 | mos7840_port = urb->context; |
3f542974 | 697 | if (!mos7840_port) { |
84fe6e79 | 698 | dbg("%s", "NULL mos7840_port pointer"); |
50de36f7 GKH |
699 | mos7840_port->read_urb_busy = false; |
700 | return; | |
701 | } | |
702 | ||
703 | if (status) { | |
704 | dbg("nonzero read bulk status received: %d", status); | |
705 | mos7840_port->read_urb_busy = false; | |
3f542974 PS |
706 | return; |
707 | } | |
708 | ||
709 | port = (struct usb_serial_port *)mos7840_port->port; | |
441b62c1 | 710 | if (mos7840_port_paranoia_check(port, __func__)) { |
84fe6e79 | 711 | dbg("%s", "Port Paranoia failed"); |
50de36f7 | 712 | mos7840_port->read_urb_busy = false; |
3f542974 PS |
713 | return; |
714 | } | |
715 | ||
441b62c1 | 716 | serial = mos7840_get_usb_serial(port, __func__); |
3f542974 | 717 | if (!serial) { |
84fe6e79 | 718 | dbg("%s", "Bad serial pointer"); |
50de36f7 | 719 | mos7840_port->read_urb_busy = false; |
3f542974 PS |
720 | return; |
721 | } | |
722 | ||
84fe6e79 | 723 | dbg("%s", "Entering... "); |
3f542974 PS |
724 | |
725 | data = urb->transfer_buffer; | |
726 | ||
84fe6e79 | 727 | dbg("%s", "Entering ..........."); |
3f542974 PS |
728 | |
729 | if (urb->actual_length) { | |
4a90f09b | 730 | tty = tty_port_tty_get(&mos7840_port->port->port); |
3f542974 PS |
731 | if (tty) { |
732 | tty_buffer_request_room(tty, urb->actual_length); | |
733 | tty_insert_flip_string(tty, data, urb->actual_length); | |
84fe6e79 | 734 | dbg(" %s ", data); |
3f542974 | 735 | tty_flip_buffer_push(tty); |
4a90f09b | 736 | tty_kref_put(tty); |
3f542974 PS |
737 | } |
738 | mos7840_port->icount.rx += urb->actual_length; | |
0de9a702 | 739 | smp_wmb(); |
84fe6e79 | 740 | dbg("mos7840_port->icount.rx is %d:", |
3f542974 PS |
741 | mos7840_port->icount.rx); |
742 | } | |
743 | ||
744 | if (!mos7840_port->read_urb) { | |
84fe6e79 | 745 | dbg("%s", "URB KILLED !!!"); |
50de36f7 | 746 | mos7840_port->read_urb_busy = false; |
3f542974 PS |
747 | return; |
748 | } | |
749 | ||
3f542974 | 750 | |
0de9a702 | 751 | mos7840_port->read_urb->dev = serial->dev; |
3f542974 | 752 | |
50de36f7 | 753 | mos7840_port->read_urb_busy = true; |
0643c724 | 754 | retval = usb_submit_urb(mos7840_port->read_urb, GFP_ATOMIC); |
0de9a702 | 755 | |
0643c724 | 756 | if (retval) { |
50de36f7 GKH |
757 | dbg("usb_submit_urb(read bulk) failed, retval = %d", retval); |
758 | mos7840_port->read_urb_busy = false; | |
3f542974 PS |
759 | } |
760 | } | |
761 | ||
762 | /***************************************************************************** | |
763 | * mos7840_bulk_out_data_callback | |
880af9db AC |
764 | * this is the callback function for when we have finished sending |
765 | * serial data on the bulk out endpoint. | |
3f542974 PS |
766 | *****************************************************************************/ |
767 | ||
7d12e780 | 768 | static void mos7840_bulk_out_data_callback(struct urb *urb) |
3f542974 PS |
769 | { |
770 | struct moschip_port *mos7840_port; | |
771 | struct tty_struct *tty; | |
0643c724 | 772 | int status = urb->status; |
0de9a702 ON |
773 | int i; |
774 | ||
cdc97792 | 775 | mos7840_port = urb->context; |
0de9a702 ON |
776 | spin_lock(&mos7840_port->pool_lock); |
777 | for (i = 0; i < NUM_URBS; i++) { | |
778 | if (urb == mos7840_port->write_urb_pool[i]) { | |
779 | mos7840_port->busy[i] = 0; | |
780 | break; | |
781 | } | |
782 | } | |
783 | spin_unlock(&mos7840_port->pool_lock); | |
784 | ||
0643c724 | 785 | if (status) { |
84fe6e79 | 786 | dbg("nonzero write bulk status received:%d", status); |
3f542974 PS |
787 | return; |
788 | } | |
789 | ||
441b62c1 | 790 | if (mos7840_port_paranoia_check(mos7840_port->port, __func__)) { |
84fe6e79 | 791 | dbg("%s", "Port Paranoia failed"); |
3f542974 PS |
792 | return; |
793 | } | |
794 | ||
84fe6e79 | 795 | dbg("%s", "Entering ........."); |
3f542974 | 796 | |
4a90f09b | 797 | tty = tty_port_tty_get(&mos7840_port->port->port); |
b963a844 JS |
798 | if (tty && mos7840_port->open) |
799 | tty_wakeup(tty); | |
4a90f09b | 800 | tty_kref_put(tty); |
3f542974 PS |
801 | |
802 | } | |
803 | ||
804 | /************************************************************************/ | |
805 | /* 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 */ | |
806 | /************************************************************************/ | |
807 | #ifdef MCSSerialProbe | |
808 | static int mos7840_serial_probe(struct usb_serial *serial, | |
809 | const struct usb_device_id *id) | |
810 | { | |
811 | ||
812 | /*need to implement the mode_reg reading and updating\ | |
813 | structures usb_serial_ device_type\ | |
814 | (i.e num_ports, num_bulkin,bulkout etc) */ | |
815 | /* Also we can update the changes attach */ | |
816 | return 1; | |
817 | } | |
818 | #endif | |
819 | ||
820 | /***************************************************************************** | |
821 | * mos7840_open | |
822 | * this function is called by the tty driver when a port is opened | |
823 | * If successful, we return 0 | |
824 | * Otherwise we return a negative error number. | |
825 | *****************************************************************************/ | |
826 | ||
a509a7e4 | 827 | static int mos7840_open(struct tty_struct *tty, struct usb_serial_port *port) |
3f542974 PS |
828 | { |
829 | int response; | |
830 | int j; | |
831 | struct usb_serial *serial; | |
832 | struct urb *urb; | |
833 | __u16 Data; | |
834 | int status; | |
835 | struct moschip_port *mos7840_port; | |
0de9a702 | 836 | struct moschip_port *port0; |
3f542974 | 837 | |
84fe6e79 TC |
838 | dbg ("%s enter", __func__); |
839 | ||
441b62c1 | 840 | if (mos7840_port_paranoia_check(port, __func__)) { |
84fe6e79 | 841 | dbg("%s", "Port Paranoia failed"); |
3f542974 PS |
842 | return -ENODEV; |
843 | } | |
844 | ||
3f542974 PS |
845 | serial = port->serial; |
846 | ||
441b62c1 | 847 | if (mos7840_serial_paranoia_check(serial, __func__)) { |
84fe6e79 | 848 | dbg("%s", "Serial Paranoia failed"); |
3f542974 PS |
849 | return -ENODEV; |
850 | } | |
851 | ||
852 | mos7840_port = mos7840_get_port_private(port); | |
0de9a702 | 853 | port0 = mos7840_get_port_private(serial->port[0]); |
3f542974 | 854 | |
0de9a702 | 855 | if (mos7840_port == NULL || port0 == NULL) |
3f542974 PS |
856 | return -ENODEV; |
857 | ||
858 | usb_clear_halt(serial->dev, port->write_urb->pipe); | |
859 | usb_clear_halt(serial->dev, port->read_urb->pipe); | |
0de9a702 | 860 | port0->open_ports++; |
3f542974 PS |
861 | |
862 | /* Initialising the write urb pool */ | |
863 | for (j = 0; j < NUM_URBS; ++j) { | |
0de9a702 | 864 | urb = usb_alloc_urb(0, GFP_KERNEL); |
3f542974 PS |
865 | mos7840_port->write_urb_pool[j] = urb; |
866 | ||
867 | if (urb == NULL) { | |
194343d9 | 868 | dev_err(&port->dev, "No more urbs???\n"); |
3f542974 PS |
869 | continue; |
870 | } | |
871 | ||
880af9db AC |
872 | urb->transfer_buffer = kmalloc(URB_TRANSFER_BUFFER_SIZE, |
873 | GFP_KERNEL); | |
3f542974 | 874 | if (!urb->transfer_buffer) { |
0de9a702 ON |
875 | usb_free_urb(urb); |
876 | mos7840_port->write_urb_pool[j] = NULL; | |
194343d9 GKH |
877 | dev_err(&port->dev, |
878 | "%s-out of memory for urb buffers.\n", | |
879 | __func__); | |
3f542974 PS |
880 | continue; |
881 | } | |
882 | } | |
883 | ||
884 | /***************************************************************************** | |
885 | * Initialize MCS7840 -- Write Init values to corresponding Registers | |
886 | * | |
887 | * Register Index | |
888 | * 1 : IER | |
889 | * 2 : FCR | |
890 | * 3 : LCR | |
891 | * 4 : MCR | |
892 | * | |
893 | * 0x08 : SP1/2 Control Reg | |
894 | *****************************************************************************/ | |
895 | ||
880af9db | 896 | /* NEED to check the following Block */ |
3f542974 | 897 | |
3f542974 PS |
898 | Data = 0x0; |
899 | status = mos7840_get_reg_sync(port, mos7840_port->SpRegOffset, &Data); | |
900 | if (status < 0) { | |
84fe6e79 | 901 | dbg("Reading Spreg failed"); |
3f542974 PS |
902 | return -1; |
903 | } | |
904 | Data |= 0x80; | |
905 | status = mos7840_set_reg_sync(port, mos7840_port->SpRegOffset, Data); | |
906 | if (status < 0) { | |
84fe6e79 | 907 | dbg("writing Spreg failed"); |
3f542974 PS |
908 | return -1; |
909 | } | |
910 | ||
911 | Data &= ~0x80; | |
912 | status = mos7840_set_reg_sync(port, mos7840_port->SpRegOffset, Data); | |
913 | if (status < 0) { | |
84fe6e79 | 914 | dbg("writing Spreg failed"); |
3f542974 PS |
915 | return -1; |
916 | } | |
880af9db | 917 | /* End of block to be checked */ |
3f542974 | 918 | |
3f542974 | 919 | Data = 0x0; |
880af9db AC |
920 | status = mos7840_get_reg_sync(port, mos7840_port->ControlRegOffset, |
921 | &Data); | |
3f542974 | 922 | if (status < 0) { |
84fe6e79 | 923 | dbg("Reading Controlreg failed"); |
3f542974 PS |
924 | return -1; |
925 | } | |
880af9db AC |
926 | Data |= 0x08; /* Driver done bit */ |
927 | Data |= 0x20; /* rx_disable */ | |
928 | status = mos7840_set_reg_sync(port, | |
929 | mos7840_port->ControlRegOffset, Data); | |
3f542974 | 930 | if (status < 0) { |
84fe6e79 | 931 | dbg("writing Controlreg failed"); |
3f542974 PS |
932 | return -1; |
933 | } | |
880af9db AC |
934 | /* do register settings here */ |
935 | /* Set all regs to the device default values. */ | |
936 | /*********************************** | |
937 | * First Disable all interrupts. | |
938 | ***********************************/ | |
3f542974 | 939 | Data = 0x00; |
3f542974 PS |
940 | status = mos7840_set_uart_reg(port, INTERRUPT_ENABLE_REGISTER, Data); |
941 | if (status < 0) { | |
84fe6e79 | 942 | dbg("disabling interrupts failed"); |
3f542974 PS |
943 | return -1; |
944 | } | |
880af9db | 945 | /* Set FIFO_CONTROL_REGISTER to the default value */ |
3f542974 | 946 | Data = 0x00; |
3f542974 PS |
947 | status = mos7840_set_uart_reg(port, FIFO_CONTROL_REGISTER, Data); |
948 | if (status < 0) { | |
84fe6e79 | 949 | dbg("Writing FIFO_CONTROL_REGISTER failed"); |
3f542974 PS |
950 | return -1; |
951 | } | |
952 | ||
953 | Data = 0xcf; | |
3f542974 PS |
954 | status = mos7840_set_uart_reg(port, FIFO_CONTROL_REGISTER, Data); |
955 | if (status < 0) { | |
84fe6e79 | 956 | dbg("Writing FIFO_CONTROL_REGISTER failed"); |
3f542974 PS |
957 | return -1; |
958 | } | |
959 | ||
960 | Data = 0x03; | |
3f542974 PS |
961 | status = mos7840_set_uart_reg(port, LINE_CONTROL_REGISTER, Data); |
962 | mos7840_port->shadowLCR = Data; | |
963 | ||
964 | Data = 0x0b; | |
3f542974 PS |
965 | status = mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, Data); |
966 | mos7840_port->shadowMCR = Data; | |
967 | ||
968 | Data = 0x00; | |
3f542974 PS |
969 | status = mos7840_get_uart_reg(port, LINE_CONTROL_REGISTER, &Data); |
970 | mos7840_port->shadowLCR = Data; | |
971 | ||
880af9db | 972 | Data |= SERIAL_LCR_DLAB; /* data latch enable in LCR 0x80 */ |
3f542974 PS |
973 | status = mos7840_set_uart_reg(port, LINE_CONTROL_REGISTER, Data); |
974 | ||
975 | Data = 0x0c; | |
3f542974 PS |
976 | status = mos7840_set_uart_reg(port, DIVISOR_LATCH_LSB, Data); |
977 | ||
978 | Data = 0x0; | |
3f542974 PS |
979 | status = mos7840_set_uart_reg(port, DIVISOR_LATCH_MSB, Data); |
980 | ||
981 | Data = 0x00; | |
3f542974 PS |
982 | status = mos7840_get_uart_reg(port, LINE_CONTROL_REGISTER, &Data); |
983 | ||
984 | Data = Data & ~SERIAL_LCR_DLAB; | |
3f542974 PS |
985 | status = mos7840_set_uart_reg(port, LINE_CONTROL_REGISTER, Data); |
986 | mos7840_port->shadowLCR = Data; | |
987 | ||
880af9db | 988 | /* clearing Bulkin and Bulkout Fifo */ |
3f542974 | 989 | Data = 0x0; |
3f542974 PS |
990 | status = mos7840_get_reg_sync(port, mos7840_port->SpRegOffset, &Data); |
991 | ||
992 | Data = Data | 0x0c; | |
3f542974 PS |
993 | status = mos7840_set_reg_sync(port, mos7840_port->SpRegOffset, Data); |
994 | ||
995 | Data = Data & ~0x0c; | |
3f542974 | 996 | status = mos7840_set_reg_sync(port, mos7840_port->SpRegOffset, Data); |
880af9db | 997 | /* Finally enable all interrupts */ |
3f542974 | 998 | Data = 0x0c; |
3f542974 PS |
999 | status = mos7840_set_uart_reg(port, INTERRUPT_ENABLE_REGISTER, Data); |
1000 | ||
880af9db | 1001 | /* clearing rx_disable */ |
3f542974 | 1002 | Data = 0x0; |
880af9db AC |
1003 | status = mos7840_get_reg_sync(port, mos7840_port->ControlRegOffset, |
1004 | &Data); | |
3f542974 | 1005 | Data = Data & ~0x20; |
880af9db AC |
1006 | status = mos7840_set_reg_sync(port, mos7840_port->ControlRegOffset, |
1007 | Data); | |
3f542974 | 1008 | |
880af9db | 1009 | /* rx_negate */ |
3f542974 | 1010 | Data = 0x0; |
880af9db AC |
1011 | status = mos7840_get_reg_sync(port, mos7840_port->ControlRegOffset, |
1012 | &Data); | |
3f542974 | 1013 | Data = Data | 0x10; |
880af9db AC |
1014 | status = mos7840_set_reg_sync(port, mos7840_port->ControlRegOffset, |
1015 | Data); | |
3f542974 | 1016 | |
880af9db AC |
1017 | /* Check to see if we've set up our endpoint info yet * |
1018 | * (can't set it up in mos7840_startup as the structures * | |
1019 | * were not set up at that time.) */ | |
0de9a702 | 1020 | if (port0->open_ports == 1) { |
3f542974 | 1021 | if (serial->port[0]->interrupt_in_buffer == NULL) { |
3f542974 | 1022 | /* set up interrupt urb */ |
3f542974 | 1023 | usb_fill_int_urb(serial->port[0]->interrupt_in_urb, |
880af9db AC |
1024 | serial->dev, |
1025 | usb_rcvintpipe(serial->dev, | |
1026 | serial->port[0]->interrupt_in_endpointAddress), | |
1027 | serial->port[0]->interrupt_in_buffer, | |
1028 | serial->port[0]->interrupt_in_urb-> | |
1029 | transfer_buffer_length, | |
1030 | mos7840_interrupt_callback, | |
1031 | serial, | |
1032 | serial->port[0]->interrupt_in_urb->interval); | |
3f542974 PS |
1033 | |
1034 | /* start interrupt read for mos7840 * | |
1035 | * will continue as long as mos7840 is connected */ | |
1036 | ||
1037 | response = | |
1038 | usb_submit_urb(serial->port[0]->interrupt_in_urb, | |
1039 | GFP_KERNEL); | |
1040 | if (response) { | |
194343d9 GKH |
1041 | dev_err(&port->dev, "%s - Error %d submitting " |
1042 | "interrupt urb\n", __func__, response); | |
3f542974 PS |
1043 | } |
1044 | ||
1045 | } | |
1046 | ||
1047 | } | |
1048 | ||
1049 | /* see if we've set up our endpoint info yet * | |
1050 | * (can't set it up in mos7840_startup as the * | |
1051 | * structures were not set up at that time.) */ | |
1052 | ||
84fe6e79 TC |
1053 | dbg("port number is %d", port->number); |
1054 | dbg("serial number is %d", port->serial->minor); | |
1055 | dbg("Bulkin endpoint is %d", port->bulk_in_endpointAddress); | |
1056 | dbg("BulkOut endpoint is %d", port->bulk_out_endpointAddress); | |
1057 | dbg("Interrupt endpoint is %d", port->interrupt_in_endpointAddress); | |
1058 | dbg("port's number in the device is %d", mos7840_port->port_num); | |
3f542974 PS |
1059 | mos7840_port->read_urb = port->read_urb; |
1060 | ||
1061 | /* set up our bulk in urb */ | |
1062 | ||
1063 | usb_fill_bulk_urb(mos7840_port->read_urb, | |
1064 | serial->dev, | |
1065 | usb_rcvbulkpipe(serial->dev, | |
1066 | port->bulk_in_endpointAddress), | |
1067 | port->bulk_in_buffer, | |
1068 | mos7840_port->read_urb->transfer_buffer_length, | |
1069 | mos7840_bulk_in_callback, mos7840_port); | |
1070 | ||
84fe6e79 | 1071 | dbg("mos7840_open: bulkin endpoint is %d", |
3f542974 | 1072 | port->bulk_in_endpointAddress); |
50de36f7 | 1073 | mos7840_port->read_urb_busy = true; |
3f542974 PS |
1074 | response = usb_submit_urb(mos7840_port->read_urb, GFP_KERNEL); |
1075 | if (response) { | |
194343d9 GKH |
1076 | dev_err(&port->dev, "%s - Error %d submitting control urb\n", |
1077 | __func__, response); | |
50de36f7 | 1078 | mos7840_port->read_urb_busy = false; |
3f542974 PS |
1079 | } |
1080 | ||
1081 | /* initialize our wait queues */ | |
1082 | init_waitqueue_head(&mos7840_port->wait_chase); | |
1083 | init_waitqueue_head(&mos7840_port->delta_msr_wait); | |
1084 | ||
1085 | /* initialize our icount structure */ | |
1086 | memset(&(mos7840_port->icount), 0x00, sizeof(mos7840_port->icount)); | |
1087 | ||
1088 | /* initialize our port settings */ | |
880af9db AC |
1089 | /* Must set to enable ints! */ |
1090 | mos7840_port->shadowMCR = MCR_MASTER_IE; | |
3f542974 PS |
1091 | /* send a open port command */ |
1092 | mos7840_port->open = 1; | |
880af9db | 1093 | /* mos7840_change_port_settings(mos7840_port,old_termios); */ |
3f542974 PS |
1094 | mos7840_port->icount.tx = 0; |
1095 | mos7840_port->icount.rx = 0; | |
1096 | ||
84fe6e79 | 1097 | dbg("usb_serial serial:%p mos7840_port:%p\n usb_serial_port port:%p", |
880af9db | 1098 | serial, mos7840_port, port); |
3f542974 | 1099 | |
84fe6e79 TC |
1100 | dbg ("%s leave", __func__); |
1101 | ||
3f542974 PS |
1102 | return 0; |
1103 | ||
1104 | } | |
1105 | ||
1106 | /***************************************************************************** | |
1107 | * mos7840_chars_in_buffer | |
1108 | * this function is called by the tty driver when it wants to know how many | |
1109 | * bytes of data we currently have outstanding in the port (data that has | |
1110 | * been written, but hasn't made it out the port yet) | |
1111 | * If successful, we return the number of bytes left to be written in the | |
1112 | * system, | |
95da310e | 1113 | * Otherwise we return zero. |
3f542974 PS |
1114 | *****************************************************************************/ |
1115 | ||
95da310e | 1116 | static int mos7840_chars_in_buffer(struct tty_struct *tty) |
3f542974 | 1117 | { |
95da310e | 1118 | struct usb_serial_port *port = tty->driver_data; |
3f542974 PS |
1119 | int i; |
1120 | int chars = 0; | |
0de9a702 | 1121 | unsigned long flags; |
3f542974 PS |
1122 | struct moschip_port *mos7840_port; |
1123 | ||
84fe6e79 | 1124 | dbg("%s", " mos7840_chars_in_buffer:entering ..........."); |
3f542974 | 1125 | |
441b62c1 | 1126 | if (mos7840_port_paranoia_check(port, __func__)) { |
84fe6e79 | 1127 | dbg("%s", "Invalid port"); |
95da310e | 1128 | return 0; |
3f542974 PS |
1129 | } |
1130 | ||
1131 | mos7840_port = mos7840_get_port_private(port); | |
1132 | if (mos7840_port == NULL) { | |
84fe6e79 | 1133 | dbg("%s", "mos7840_break:leaving ..........."); |
95da310e | 1134 | return 0; |
3f542974 PS |
1135 | } |
1136 | ||
880af9db | 1137 | spin_lock_irqsave(&mos7840_port->pool_lock, flags); |
95da310e AC |
1138 | for (i = 0; i < NUM_URBS; ++i) |
1139 | if (mos7840_port->busy[i]) | |
3f542974 | 1140 | chars += URB_TRANSFER_BUFFER_SIZE; |
880af9db | 1141 | spin_unlock_irqrestore(&mos7840_port->pool_lock, flags); |
441b62c1 | 1142 | dbg("%s - returns %d", __func__, chars); |
0de9a702 | 1143 | return chars; |
3f542974 PS |
1144 | |
1145 | } | |
1146 | ||
3f542974 PS |
1147 | /***************************************************************************** |
1148 | * mos7840_close | |
1149 | * this function is called by the tty driver when a port is closed | |
1150 | *****************************************************************************/ | |
1151 | ||
335f8514 | 1152 | static void mos7840_close(struct usb_serial_port *port) |
3f542974 PS |
1153 | { |
1154 | struct usb_serial *serial; | |
1155 | struct moschip_port *mos7840_port; | |
0de9a702 | 1156 | struct moschip_port *port0; |
3f542974 PS |
1157 | int j; |
1158 | __u16 Data; | |
1159 | ||
84fe6e79 | 1160 | dbg("%s", "mos7840_close:entering..."); |
3f542974 | 1161 | |
441b62c1 | 1162 | if (mos7840_port_paranoia_check(port, __func__)) { |
84fe6e79 | 1163 | dbg("%s", "Port Paranoia failed"); |
3f542974 PS |
1164 | return; |
1165 | } | |
1166 | ||
441b62c1 | 1167 | serial = mos7840_get_usb_serial(port, __func__); |
3f542974 | 1168 | if (!serial) { |
84fe6e79 | 1169 | dbg("%s", "Serial Paranoia failed"); |
3f542974 PS |
1170 | return; |
1171 | } | |
1172 | ||
1173 | mos7840_port = mos7840_get_port_private(port); | |
0de9a702 | 1174 | port0 = mos7840_get_port_private(serial->port[0]); |
3f542974 | 1175 | |
0de9a702 | 1176 | if (mos7840_port == NULL || port0 == NULL) |
3f542974 | 1177 | return; |
3f542974 PS |
1178 | |
1179 | for (j = 0; j < NUM_URBS; ++j) | |
1180 | usb_kill_urb(mos7840_port->write_urb_pool[j]); | |
1181 | ||
1182 | /* Freeing Write URBs */ | |
1183 | for (j = 0; j < NUM_URBS; ++j) { | |
1184 | if (mos7840_port->write_urb_pool[j]) { | |
1185 | if (mos7840_port->write_urb_pool[j]->transfer_buffer) | |
1186 | kfree(mos7840_port->write_urb_pool[j]-> | |
1187 | transfer_buffer); | |
1188 | ||
1189 | usb_free_urb(mos7840_port->write_urb_pool[j]); | |
1190 | } | |
1191 | } | |
1192 | ||
3f542974 PS |
1193 | /* While closing port, shutdown all bulk read, write * |
1194 | * and interrupt read if they exists */ | |
1195 | if (serial->dev) { | |
3f542974 | 1196 | if (mos7840_port->write_urb) { |
84fe6e79 | 1197 | dbg("%s", "Shutdown bulk write"); |
3f542974 PS |
1198 | usb_kill_urb(mos7840_port->write_urb); |
1199 | } | |
3f542974 | 1200 | if (mos7840_port->read_urb) { |
84fe6e79 | 1201 | dbg("%s", "Shutdown bulk read"); |
3f542974 | 1202 | usb_kill_urb(mos7840_port->read_urb); |
50de36f7 | 1203 | mos7840_port->read_urb_busy = false; |
3f542974 PS |
1204 | } |
1205 | if ((&mos7840_port->control_urb)) { | |
84fe6e79 | 1206 | dbg("%s", "Shutdown control read"); |
880af9db | 1207 | /*/ usb_kill_urb (mos7840_port->control_urb); */ |
3f542974 PS |
1208 | } |
1209 | } | |
880af9db AC |
1210 | /* if(mos7840_port->ctrl_buf != NULL) */ |
1211 | /* kfree(mos7840_port->ctrl_buf); */ | |
0de9a702 | 1212 | port0->open_ports--; |
84fe6e79 | 1213 | dbg("mos7840_num_open_ports in close%d:in port%d", |
0de9a702 ON |
1214 | port0->open_ports, port->number); |
1215 | if (port0->open_ports == 0) { | |
3f542974 | 1216 | if (serial->port[0]->interrupt_in_urb) { |
84fe6e79 | 1217 | dbg("%s", "Shutdown interrupt_in_urb"); |
0de9a702 | 1218 | usb_kill_urb(serial->port[0]->interrupt_in_urb); |
3f542974 PS |
1219 | } |
1220 | } | |
1221 | ||
1222 | if (mos7840_port->write_urb) { | |
1223 | /* if this urb had a transfer buffer already (old tx) free it */ | |
880af9db | 1224 | if (mos7840_port->write_urb->transfer_buffer != NULL) |
3f542974 | 1225 | kfree(mos7840_port->write_urb->transfer_buffer); |
3f542974 PS |
1226 | usb_free_urb(mos7840_port->write_urb); |
1227 | } | |
1228 | ||
1229 | Data = 0x0; | |
1230 | mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, Data); | |
1231 | ||
1232 | Data = 0x00; | |
1233 | mos7840_set_uart_reg(port, INTERRUPT_ENABLE_REGISTER, Data); | |
1234 | ||
1235 | mos7840_port->open = 0; | |
1236 | ||
84fe6e79 | 1237 | dbg("%s", "Leaving ............"); |
3f542974 PS |
1238 | } |
1239 | ||
1240 | /************************************************************************ | |
1241 | * | |
1242 | * mos7840_block_until_chase_response | |
1243 | * | |
1244 | * This function will block the close until one of the following: | |
1245 | * 1. Response to our Chase comes from mos7840 | |
dc0d5c1e | 1246 | * 2. A timeout of 10 seconds without activity has expired |
3f542974 PS |
1247 | * (1K of mos7840 data @ 2400 baud ==> 4 sec to empty) |
1248 | * | |
1249 | ************************************************************************/ | |
1250 | ||
95da310e AC |
1251 | static void mos7840_block_until_chase_response(struct tty_struct *tty, |
1252 | struct moschip_port *mos7840_port) | |
3f542974 PS |
1253 | { |
1254 | int timeout = 1 * HZ; | |
1255 | int wait = 10; | |
1256 | int count; | |
1257 | ||
1258 | while (1) { | |
95da310e | 1259 | count = mos7840_chars_in_buffer(tty); |
3f542974 PS |
1260 | |
1261 | /* Check for Buffer status */ | |
880af9db | 1262 | if (count <= 0) |
3f542974 | 1263 | return; |
3f542974 PS |
1264 | |
1265 | /* Block the thread for a while */ | |
1266 | interruptible_sleep_on_timeout(&mos7840_port->wait_chase, | |
1267 | timeout); | |
1268 | /* No activity.. count down section */ | |
1269 | wait--; | |
1270 | if (wait == 0) { | |
441b62c1 | 1271 | dbg("%s - TIMEOUT", __func__); |
3f542974 PS |
1272 | return; |
1273 | } else { | |
dc0d5c1e | 1274 | /* Reset timeout value back to seconds */ |
3f542974 PS |
1275 | wait = 10; |
1276 | } | |
1277 | } | |
1278 | ||
1279 | } | |
1280 | ||
1281 | /***************************************************************************** | |
1282 | * mos7840_break | |
1283 | * this function sends a break to the port | |
1284 | *****************************************************************************/ | |
95da310e | 1285 | static void mos7840_break(struct tty_struct *tty, int break_state) |
3f542974 | 1286 | { |
95da310e | 1287 | struct usb_serial_port *port = tty->driver_data; |
3f542974 PS |
1288 | unsigned char data; |
1289 | struct usb_serial *serial; | |
1290 | struct moschip_port *mos7840_port; | |
1291 | ||
84fe6e79 TC |
1292 | dbg("%s", "Entering ..........."); |
1293 | dbg("mos7840_break: Start"); | |
3f542974 | 1294 | |
441b62c1 | 1295 | if (mos7840_port_paranoia_check(port, __func__)) { |
84fe6e79 | 1296 | dbg("%s", "Port Paranoia failed"); |
3f542974 PS |
1297 | return; |
1298 | } | |
1299 | ||
441b62c1 | 1300 | serial = mos7840_get_usb_serial(port, __func__); |
3f542974 | 1301 | if (!serial) { |
84fe6e79 | 1302 | dbg("%s", "Serial Paranoia failed"); |
3f542974 PS |
1303 | return; |
1304 | } | |
1305 | ||
1306 | mos7840_port = mos7840_get_port_private(port); | |
1307 | ||
880af9db | 1308 | if (mos7840_port == NULL) |
3f542974 | 1309 | return; |
3f542974 | 1310 | |
95da310e | 1311 | if (serial->dev) |
3f542974 | 1312 | /* flush and block until tx is empty */ |
95da310e | 1313 | mos7840_block_until_chase_response(tty, mos7840_port); |
3f542974 | 1314 | |
95da310e | 1315 | if (break_state == -1) |
3f542974 | 1316 | data = mos7840_port->shadowLCR | LCR_SET_BREAK; |
95da310e | 1317 | else |
3f542974 | 1318 | data = mos7840_port->shadowLCR & ~LCR_SET_BREAK; |
3f542974 | 1319 | |
6b447f04 | 1320 | /* FIXME: no locking on shadowLCR anywhere in driver */ |
3f542974 | 1321 | mos7840_port->shadowLCR = data; |
84fe6e79 | 1322 | dbg("mcs7840_break mos7840_port->shadowLCR is %x", |
3f542974 PS |
1323 | mos7840_port->shadowLCR); |
1324 | mos7840_set_uart_reg(port, LINE_CONTROL_REGISTER, | |
1325 | mos7840_port->shadowLCR); | |
1326 | ||
1327 | return; | |
1328 | } | |
1329 | ||
1330 | /***************************************************************************** | |
1331 | * mos7840_write_room | |
1332 | * this function is called by the tty driver when it wants to know how many | |
1333 | * bytes of data we can accept for a specific port. | |
1334 | * If successful, we return the amount of room that we have for this port | |
1335 | * Otherwise we return a negative error number. | |
1336 | *****************************************************************************/ | |
1337 | ||
95da310e | 1338 | static int mos7840_write_room(struct tty_struct *tty) |
3f542974 | 1339 | { |
95da310e | 1340 | struct usb_serial_port *port = tty->driver_data; |
3f542974 PS |
1341 | int i; |
1342 | int room = 0; | |
0de9a702 | 1343 | unsigned long flags; |
3f542974 PS |
1344 | struct moschip_port *mos7840_port; |
1345 | ||
84fe6e79 | 1346 | dbg("%s", " mos7840_write_room:entering ..........."); |
3f542974 | 1347 | |
441b62c1 | 1348 | if (mos7840_port_paranoia_check(port, __func__)) { |
84fe6e79 TC |
1349 | dbg("%s", "Invalid port"); |
1350 | dbg("%s", " mos7840_write_room:leaving ..........."); | |
3f542974 PS |
1351 | return -1; |
1352 | } | |
1353 | ||
1354 | mos7840_port = mos7840_get_port_private(port); | |
1355 | if (mos7840_port == NULL) { | |
84fe6e79 | 1356 | dbg("%s", "mos7840_break:leaving ..........."); |
3f542974 PS |
1357 | return -1; |
1358 | } | |
1359 | ||
0de9a702 | 1360 | spin_lock_irqsave(&mos7840_port->pool_lock, flags); |
3f542974 | 1361 | for (i = 0; i < NUM_URBS; ++i) { |
880af9db | 1362 | if (!mos7840_port->busy[i]) |
3f542974 | 1363 | room += URB_TRANSFER_BUFFER_SIZE; |
3f542974 | 1364 | } |
0de9a702 | 1365 | spin_unlock_irqrestore(&mos7840_port->pool_lock, flags); |
3f542974 | 1366 | |
0de9a702 | 1367 | room = (room == 0) ? 0 : room - URB_TRANSFER_BUFFER_SIZE + 1; |
441b62c1 | 1368 | dbg("%s - returns %d", __func__, room); |
0de9a702 | 1369 | return room; |
3f542974 PS |
1370 | |
1371 | } | |
1372 | ||
1373 | /***************************************************************************** | |
1374 | * mos7840_write | |
1375 | * this function is called by the tty driver when data should be written to | |
1376 | * the port. | |
1377 | * If successful, we return the number of bytes written, otherwise we | |
1378 | * return a negative error number. | |
1379 | *****************************************************************************/ | |
1380 | ||
95da310e | 1381 | static int mos7840_write(struct tty_struct *tty, struct usb_serial_port *port, |
3f542974 PS |
1382 | const unsigned char *data, int count) |
1383 | { | |
1384 | int status; | |
1385 | int i; | |
1386 | int bytes_sent = 0; | |
1387 | int transfer_size; | |
0de9a702 | 1388 | unsigned long flags; |
3f542974 PS |
1389 | |
1390 | struct moschip_port *mos7840_port; | |
1391 | struct usb_serial *serial; | |
1392 | struct urb *urb; | |
880af9db | 1393 | /* __u16 Data; */ |
3f542974 PS |
1394 | const unsigned char *current_position = data; |
1395 | unsigned char *data1; | |
84fe6e79 TC |
1396 | dbg("%s", "entering ..........."); |
1397 | /* dbg("mos7840_write: mos7840_port->shadowLCR is %x", | |
880af9db | 1398 | mos7840_port->shadowLCR); */ |
3f542974 PS |
1399 | |
1400 | #ifdef NOTMOS7840 | |
1401 | Data = 0x00; | |
3f542974 PS |
1402 | status = mos7840_get_uart_reg(port, LINE_CONTROL_REGISTER, &Data); |
1403 | mos7840_port->shadowLCR = Data; | |
84fe6e79 TC |
1404 | dbg("mos7840_write: LINE_CONTROL_REGISTER is %x", Data); |
1405 | dbg("mos7840_write: mos7840_port->shadowLCR is %x", | |
3f542974 PS |
1406 | mos7840_port->shadowLCR); |
1407 | ||
880af9db AC |
1408 | /* Data = 0x03; */ |
1409 | /* status = mos7840_set_uart_reg(port,LINE_CONTROL_REGISTER,Data); */ | |
1410 | /* mos7840_port->shadowLCR=Data;//Need to add later */ | |
3f542974 | 1411 | |
880af9db | 1412 | Data |= SERIAL_LCR_DLAB; /* data latch enable in LCR 0x80 */ |
3f542974 PS |
1413 | status = mos7840_set_uart_reg(port, LINE_CONTROL_REGISTER, Data); |
1414 | ||
880af9db AC |
1415 | /* Data = 0x0c; */ |
1416 | /* status = mos7840_set_uart_reg(port,DIVISOR_LATCH_LSB,Data); */ | |
3f542974 | 1417 | Data = 0x00; |
3f542974 | 1418 | status = mos7840_get_uart_reg(port, DIVISOR_LATCH_LSB, &Data); |
84fe6e79 | 1419 | dbg("mos7840_write:DLL value is %x", Data); |
3f542974 PS |
1420 | |
1421 | Data = 0x0; | |
3f542974 | 1422 | status = mos7840_get_uart_reg(port, DIVISOR_LATCH_MSB, &Data); |
84fe6e79 | 1423 | dbg("mos7840_write:DLM value is %x", Data); |
3f542974 PS |
1424 | |
1425 | Data = Data & ~SERIAL_LCR_DLAB; | |
84fe6e79 | 1426 | dbg("mos7840_write: mos7840_port->shadowLCR is %x", |
3f542974 | 1427 | mos7840_port->shadowLCR); |
3f542974 PS |
1428 | status = mos7840_set_uart_reg(port, LINE_CONTROL_REGISTER, Data); |
1429 | #endif | |
1430 | ||
441b62c1 | 1431 | if (mos7840_port_paranoia_check(port, __func__)) { |
84fe6e79 | 1432 | dbg("%s", "Port Paranoia failed"); |
3f542974 PS |
1433 | return -1; |
1434 | } | |
1435 | ||
1436 | serial = port->serial; | |
441b62c1 | 1437 | if (mos7840_serial_paranoia_check(serial, __func__)) { |
84fe6e79 | 1438 | dbg("%s", "Serial Paranoia failed"); |
3f542974 PS |
1439 | return -1; |
1440 | } | |
1441 | ||
1442 | mos7840_port = mos7840_get_port_private(port); | |
1443 | if (mos7840_port == NULL) { | |
84fe6e79 | 1444 | dbg("%s", "mos7840_port is NULL"); |
3f542974 PS |
1445 | return -1; |
1446 | } | |
1447 | ||
1448 | /* try to find a free urb in the list */ | |
1449 | urb = NULL; | |
1450 | ||
0de9a702 | 1451 | spin_lock_irqsave(&mos7840_port->pool_lock, flags); |
3f542974 | 1452 | for (i = 0; i < NUM_URBS; ++i) { |
0de9a702 ON |
1453 | if (!mos7840_port->busy[i]) { |
1454 | mos7840_port->busy[i] = 1; | |
3f542974 | 1455 | urb = mos7840_port->write_urb_pool[i]; |
84fe6e79 | 1456 | dbg("URB:%d", i); |
3f542974 PS |
1457 | break; |
1458 | } | |
1459 | } | |
0de9a702 | 1460 | spin_unlock_irqrestore(&mos7840_port->pool_lock, flags); |
3f542974 PS |
1461 | |
1462 | if (urb == NULL) { | |
441b62c1 | 1463 | dbg("%s - no more free urbs", __func__); |
3f542974 PS |
1464 | goto exit; |
1465 | } | |
1466 | ||
1467 | if (urb->transfer_buffer == NULL) { | |
1468 | urb->transfer_buffer = | |
1469 | kmalloc(URB_TRANSFER_BUFFER_SIZE, GFP_KERNEL); | |
1470 | ||
1471 | if (urb->transfer_buffer == NULL) { | |
194343d9 GKH |
1472 | dev_err(&port->dev, "%s no more kernel memory...\n", |
1473 | __func__); | |
3f542974 PS |
1474 | goto exit; |
1475 | } | |
1476 | } | |
1477 | transfer_size = min(count, URB_TRANSFER_BUFFER_SIZE); | |
1478 | ||
97c4965d | 1479 | memcpy(urb->transfer_buffer, current_position, transfer_size); |
3f542974 PS |
1480 | |
1481 | /* fill urb with data and submit */ | |
1482 | usb_fill_bulk_urb(urb, | |
1483 | serial->dev, | |
1484 | usb_sndbulkpipe(serial->dev, | |
1485 | port->bulk_out_endpointAddress), | |
1486 | urb->transfer_buffer, | |
1487 | transfer_size, | |
1488 | mos7840_bulk_out_data_callback, mos7840_port); | |
1489 | ||
1490 | data1 = urb->transfer_buffer; | |
84fe6e79 | 1491 | dbg("bulkout endpoint is %d", port->bulk_out_endpointAddress); |
3f542974 PS |
1492 | |
1493 | /* send it down the pipe */ | |
1494 | status = usb_submit_urb(urb, GFP_ATOMIC); | |
1495 | ||
1496 | if (status) { | |
0de9a702 | 1497 | mos7840_port->busy[i] = 0; |
194343d9 GKH |
1498 | dev_err(&port->dev, "%s - usb_submit_urb(write bulk) failed " |
1499 | "with status = %d\n", __func__, status); | |
3f542974 PS |
1500 | bytes_sent = status; |
1501 | goto exit; | |
1502 | } | |
1503 | bytes_sent = transfer_size; | |
1504 | mos7840_port->icount.tx += transfer_size; | |
0de9a702 | 1505 | smp_wmb(); |
84fe6e79 | 1506 | dbg("mos7840_port->icount.tx is %d:", mos7840_port->icount.tx); |
95da310e | 1507 | exit: |
3f542974 PS |
1508 | return bytes_sent; |
1509 | ||
1510 | } | |
1511 | ||
1512 | /***************************************************************************** | |
1513 | * mos7840_throttle | |
1514 | * this function is called by the tty driver when it wants to stop the data | |
1515 | * being read from the port. | |
1516 | *****************************************************************************/ | |
1517 | ||
95da310e | 1518 | static void mos7840_throttle(struct tty_struct *tty) |
3f542974 | 1519 | { |
95da310e | 1520 | struct usb_serial_port *port = tty->driver_data; |
3f542974 | 1521 | struct moschip_port *mos7840_port; |
3f542974 PS |
1522 | int status; |
1523 | ||
441b62c1 | 1524 | if (mos7840_port_paranoia_check(port, __func__)) { |
84fe6e79 | 1525 | dbg("%s", "Invalid port"); |
3f542974 PS |
1526 | return; |
1527 | } | |
1528 | ||
84fe6e79 | 1529 | dbg("- port %d", port->number); |
3f542974 PS |
1530 | |
1531 | mos7840_port = mos7840_get_port_private(port); | |
1532 | ||
1533 | if (mos7840_port == NULL) | |
1534 | return; | |
1535 | ||
1536 | if (!mos7840_port->open) { | |
84fe6e79 | 1537 | dbg("%s", "port not opened"); |
3f542974 PS |
1538 | return; |
1539 | } | |
1540 | ||
84fe6e79 | 1541 | dbg("%s", "Entering .........."); |
3f542974 | 1542 | |
3f542974 PS |
1543 | /* if we are implementing XON/XOFF, send the stop character */ |
1544 | if (I_IXOFF(tty)) { | |
1545 | unsigned char stop_char = STOP_CHAR(tty); | |
95da310e AC |
1546 | status = mos7840_write(tty, port, &stop_char, 1); |
1547 | if (status <= 0) | |
3f542974 | 1548 | return; |
3f542974 | 1549 | } |
3f542974 PS |
1550 | /* if we are implementing RTS/CTS, toggle that line */ |
1551 | if (tty->termios->c_cflag & CRTSCTS) { | |
1552 | mos7840_port->shadowMCR &= ~MCR_RTS; | |
95da310e | 1553 | status = mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, |
3f542974 | 1554 | mos7840_port->shadowMCR); |
95da310e | 1555 | if (status < 0) |
3f542974 | 1556 | return; |
3f542974 PS |
1557 | } |
1558 | ||
1559 | return; | |
1560 | } | |
1561 | ||
1562 | /***************************************************************************** | |
1563 | * mos7840_unthrottle | |
880af9db AC |
1564 | * this function is called by the tty driver when it wants to resume |
1565 | * the data being read from the port (called after mos7840_throttle is | |
1566 | * called) | |
3f542974 | 1567 | *****************************************************************************/ |
95da310e | 1568 | static void mos7840_unthrottle(struct tty_struct *tty) |
3f542974 | 1569 | { |
95da310e | 1570 | struct usb_serial_port *port = tty->driver_data; |
3f542974 PS |
1571 | int status; |
1572 | struct moschip_port *mos7840_port = mos7840_get_port_private(port); | |
1573 | ||
441b62c1 | 1574 | if (mos7840_port_paranoia_check(port, __func__)) { |
84fe6e79 | 1575 | dbg("%s", "Invalid port"); |
3f542974 PS |
1576 | return; |
1577 | } | |
1578 | ||
1579 | if (mos7840_port == NULL) | |
1580 | return; | |
1581 | ||
1582 | if (!mos7840_port->open) { | |
441b62c1 | 1583 | dbg("%s - port not opened", __func__); |
3f542974 PS |
1584 | return; |
1585 | } | |
1586 | ||
84fe6e79 | 1587 | dbg("%s", "Entering .........."); |
3f542974 | 1588 | |
3f542974 PS |
1589 | /* if we are implementing XON/XOFF, send the start character */ |
1590 | if (I_IXOFF(tty)) { | |
1591 | unsigned char start_char = START_CHAR(tty); | |
95da310e AC |
1592 | status = mos7840_write(tty, port, &start_char, 1); |
1593 | if (status <= 0) | |
3f542974 | 1594 | return; |
3f542974 PS |
1595 | } |
1596 | ||
1597 | /* if we are implementing RTS/CTS, toggle that line */ | |
1598 | if (tty->termios->c_cflag & CRTSCTS) { | |
1599 | mos7840_port->shadowMCR |= MCR_RTS; | |
95da310e | 1600 | status = mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, |
3f542974 | 1601 | mos7840_port->shadowMCR); |
95da310e | 1602 | if (status < 0) |
3f542974 | 1603 | return; |
3f542974 | 1604 | } |
3f542974 PS |
1605 | } |
1606 | ||
95da310e | 1607 | static int mos7840_tiocmget(struct tty_struct *tty, struct file *file) |
3f542974 | 1608 | { |
95da310e | 1609 | struct usb_serial_port *port = tty->driver_data; |
3f542974 PS |
1610 | struct moschip_port *mos7840_port; |
1611 | unsigned int result; | |
1612 | __u16 msr; | |
1613 | __u16 mcr; | |
880af9db | 1614 | int status; |
3f542974 PS |
1615 | mos7840_port = mos7840_get_port_private(port); |
1616 | ||
441b62c1 | 1617 | dbg("%s - port %d", __func__, port->number); |
3f542974 PS |
1618 | |
1619 | if (mos7840_port == NULL) | |
1620 | return -ENODEV; | |
1621 | ||
1622 | status = mos7840_get_uart_reg(port, MODEM_STATUS_REGISTER, &msr); | |
1623 | status = mos7840_get_uart_reg(port, MODEM_CONTROL_REGISTER, &mcr); | |
1624 | result = ((mcr & MCR_DTR) ? TIOCM_DTR : 0) | |
1625 | | ((mcr & MCR_RTS) ? TIOCM_RTS : 0) | |
1626 | | ((mcr & MCR_LOOPBACK) ? TIOCM_LOOP : 0) | |
1627 | | ((msr & MOS7840_MSR_CTS) ? TIOCM_CTS : 0) | |
1628 | | ((msr & MOS7840_MSR_CD) ? TIOCM_CAR : 0) | |
1629 | | ((msr & MOS7840_MSR_RI) ? TIOCM_RI : 0) | |
1630 | | ((msr & MOS7840_MSR_DSR) ? TIOCM_DSR : 0); | |
1631 | ||
441b62c1 | 1632 | dbg("%s - 0x%04X", __func__, result); |
3f542974 PS |
1633 | |
1634 | return result; | |
1635 | } | |
1636 | ||
95da310e | 1637 | static int mos7840_tiocmset(struct tty_struct *tty, struct file *file, |
3f542974 PS |
1638 | unsigned int set, unsigned int clear) |
1639 | { | |
95da310e | 1640 | struct usb_serial_port *port = tty->driver_data; |
3f542974 PS |
1641 | struct moschip_port *mos7840_port; |
1642 | unsigned int mcr; | |
87521c46 | 1643 | int status; |
3f542974 | 1644 | |
441b62c1 | 1645 | dbg("%s - port %d", __func__, port->number); |
3f542974 PS |
1646 | |
1647 | mos7840_port = mos7840_get_port_private(port); | |
1648 | ||
1649 | if (mos7840_port == NULL) | |
1650 | return -ENODEV; | |
1651 | ||
e2984494 | 1652 | /* FIXME: What locks the port registers ? */ |
3f542974 PS |
1653 | mcr = mos7840_port->shadowMCR; |
1654 | if (clear & TIOCM_RTS) | |
1655 | mcr &= ~MCR_RTS; | |
1656 | if (clear & TIOCM_DTR) | |
1657 | mcr &= ~MCR_DTR; | |
1658 | if (clear & TIOCM_LOOP) | |
1659 | mcr &= ~MCR_LOOPBACK; | |
1660 | ||
1661 | if (set & TIOCM_RTS) | |
1662 | mcr |= MCR_RTS; | |
1663 | if (set & TIOCM_DTR) | |
1664 | mcr |= MCR_DTR; | |
1665 | if (set & TIOCM_LOOP) | |
1666 | mcr |= MCR_LOOPBACK; | |
1667 | ||
1668 | mos7840_port->shadowMCR = mcr; | |
1669 | ||
3f542974 PS |
1670 | status = mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, mcr); |
1671 | if (status < 0) { | |
84fe6e79 | 1672 | dbg("setting MODEM_CONTROL_REGISTER Failed"); |
87521c46 | 1673 | return status; |
3f542974 PS |
1674 | } |
1675 | ||
1676 | return 0; | |
1677 | } | |
1678 | ||
1679 | /***************************************************************************** | |
1680 | * mos7840_calc_baud_rate_divisor | |
1681 | * this function calculates the proper baud rate divisor for the specified | |
1682 | * baud rate. | |
1683 | *****************************************************************************/ | |
1684 | static int mos7840_calc_baud_rate_divisor(int baudRate, int *divisor, | |
880af9db | 1685 | __u16 *clk_sel_val) |
3f542974 PS |
1686 | { |
1687 | ||
441b62c1 | 1688 | dbg("%s - %d", __func__, baudRate); |
3f542974 PS |
1689 | |
1690 | if (baudRate <= 115200) { | |
1691 | *divisor = 115200 / baudRate; | |
1692 | *clk_sel_val = 0x0; | |
1693 | } | |
1694 | if ((baudRate > 115200) && (baudRate <= 230400)) { | |
1695 | *divisor = 230400 / baudRate; | |
1696 | *clk_sel_val = 0x10; | |
1697 | } else if ((baudRate > 230400) && (baudRate <= 403200)) { | |
1698 | *divisor = 403200 / baudRate; | |
1699 | *clk_sel_val = 0x20; | |
1700 | } else if ((baudRate > 403200) && (baudRate <= 460800)) { | |
1701 | *divisor = 460800 / baudRate; | |
1702 | *clk_sel_val = 0x30; | |
1703 | } else if ((baudRate > 460800) && (baudRate <= 806400)) { | |
1704 | *divisor = 806400 / baudRate; | |
1705 | *clk_sel_val = 0x40; | |
1706 | } else if ((baudRate > 806400) && (baudRate <= 921600)) { | |
1707 | *divisor = 921600 / baudRate; | |
1708 | *clk_sel_val = 0x50; | |
1709 | } else if ((baudRate > 921600) && (baudRate <= 1572864)) { | |
1710 | *divisor = 1572864 / baudRate; | |
1711 | *clk_sel_val = 0x60; | |
1712 | } else if ((baudRate > 1572864) && (baudRate <= 3145728)) { | |
1713 | *divisor = 3145728 / baudRate; | |
1714 | *clk_sel_val = 0x70; | |
1715 | } | |
1716 | return 0; | |
1717 | ||
1718 | #ifdef NOTMCS7840 | |
1719 | ||
1720 | for (i = 0; i < ARRAY_SIZE(mos7840_divisor_table); i++) { | |
1721 | if (mos7840_divisor_table[i].BaudRate == baudrate) { | |
1722 | *divisor = mos7840_divisor_table[i].Divisor; | |
1723 | return 0; | |
1724 | } | |
1725 | } | |
1726 | ||
1727 | /* After trying for all the standard baud rates * | |
1728 | * Try calculating the divisor for this baud rate */ | |
1729 | ||
1730 | if (baudrate > 75 && baudrate < 230400) { | |
1731 | /* get the divisor */ | |
1732 | custom = (__u16) (230400L / baudrate); | |
1733 | ||
1734 | /* Check for round off */ | |
1735 | round1 = (__u16) (2304000L / baudrate); | |
1736 | round = (__u16) (round1 - (custom * 10)); | |
880af9db | 1737 | if (round > 4) |
3f542974 | 1738 | custom++; |
3f542974 PS |
1739 | *divisor = custom; |
1740 | ||
84fe6e79 | 1741 | dbg(" Baud %d = %d", baudrate, custom); |
3f542974 PS |
1742 | return 0; |
1743 | } | |
1744 | ||
84fe6e79 | 1745 | dbg("%s", " Baud calculation Failed..."); |
3f542974 PS |
1746 | return -1; |
1747 | #endif | |
1748 | } | |
1749 | ||
1750 | /***************************************************************************** | |
1751 | * mos7840_send_cmd_write_baud_rate | |
1752 | * this function sends the proper command to change the baud rate of the | |
1753 | * specified port. | |
1754 | *****************************************************************************/ | |
1755 | ||
1756 | static int mos7840_send_cmd_write_baud_rate(struct moschip_port *mos7840_port, | |
1757 | int baudRate) | |
1758 | { | |
1759 | int divisor = 0; | |
1760 | int status; | |
1761 | __u16 Data; | |
1762 | unsigned char number; | |
1763 | __u16 clk_sel_val; | |
1764 | struct usb_serial_port *port; | |
1765 | ||
1766 | if (mos7840_port == NULL) | |
1767 | return -1; | |
1768 | ||
1769 | port = (struct usb_serial_port *)mos7840_port->port; | |
441b62c1 | 1770 | if (mos7840_port_paranoia_check(port, __func__)) { |
84fe6e79 | 1771 | dbg("%s", "Invalid port"); |
3f542974 PS |
1772 | return -1; |
1773 | } | |
1774 | ||
441b62c1 | 1775 | if (mos7840_serial_paranoia_check(port->serial, __func__)) { |
84fe6e79 | 1776 | dbg("%s", "Invalid Serial"); |
3f542974 PS |
1777 | return -1; |
1778 | } | |
1779 | ||
84fe6e79 | 1780 | dbg("%s", "Entering .........."); |
3f542974 PS |
1781 | |
1782 | number = mos7840_port->port->number - mos7840_port->port->serial->minor; | |
1783 | ||
441b62c1 | 1784 | dbg("%s - port = %d, baud = %d", __func__, |
3f542974 | 1785 | mos7840_port->port->number, baudRate); |
880af9db | 1786 | /* reset clk_uart_sel in spregOffset */ |
3f542974 PS |
1787 | if (baudRate > 115200) { |
1788 | #ifdef HW_flow_control | |
880af9db AC |
1789 | /* NOTE: need to see the pther register to modify */ |
1790 | /* setting h/w flow control bit to 1 */ | |
3f542974 PS |
1791 | Data = 0x2b; |
1792 | mos7840_port->shadowMCR = Data; | |
880af9db AC |
1793 | status = mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, |
1794 | Data); | |
3f542974 | 1795 | if (status < 0) { |
84fe6e79 | 1796 | dbg("Writing spreg failed in set_serial_baud"); |
3f542974 PS |
1797 | return -1; |
1798 | } | |
1799 | #endif | |
1800 | ||
1801 | } else { | |
1802 | #ifdef HW_flow_control | |
880af9db | 1803 | / *setting h/w flow control bit to 0 */ |
3f542974 PS |
1804 | Data = 0xb; |
1805 | mos7840_port->shadowMCR = Data; | |
880af9db AC |
1806 | status = mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, |
1807 | Data); | |
3f542974 | 1808 | if (status < 0) { |
84fe6e79 | 1809 | dbg("Writing spreg failed in set_serial_baud"); |
3f542974 PS |
1810 | return -1; |
1811 | } | |
1812 | #endif | |
1813 | ||
1814 | } | |
1815 | ||
880af9db | 1816 | if (1) { /* baudRate <= 115200) */ |
3f542974 PS |
1817 | clk_sel_val = 0x0; |
1818 | Data = 0x0; | |
880af9db | 1819 | status = mos7840_calc_baud_rate_divisor(baudRate, &divisor, |
3f542974 | 1820 | &clk_sel_val); |
880af9db AC |
1821 | status = mos7840_get_reg_sync(port, mos7840_port->SpRegOffset, |
1822 | &Data); | |
3f542974 | 1823 | if (status < 0) { |
84fe6e79 | 1824 | dbg("reading spreg failed in set_serial_baud"); |
3f542974 PS |
1825 | return -1; |
1826 | } | |
1827 | Data = (Data & 0x8f) | clk_sel_val; | |
880af9db AC |
1828 | status = mos7840_set_reg_sync(port, mos7840_port->SpRegOffset, |
1829 | Data); | |
3f542974 | 1830 | if (status < 0) { |
84fe6e79 | 1831 | dbg("Writing spreg failed in set_serial_baud"); |
3f542974 PS |
1832 | return -1; |
1833 | } | |
1834 | /* Calculate the Divisor */ | |
1835 | ||
1836 | if (status) { | |
194343d9 | 1837 | dev_err(&port->dev, "%s - bad baud rate\n", __func__); |
3f542974 PS |
1838 | return status; |
1839 | } | |
1840 | /* Enable access to divisor latch */ | |
1841 | Data = mos7840_port->shadowLCR | SERIAL_LCR_DLAB; | |
1842 | mos7840_port->shadowLCR = Data; | |
1843 | mos7840_set_uart_reg(port, LINE_CONTROL_REGISTER, Data); | |
1844 | ||
1845 | /* Write the divisor */ | |
1846 | Data = (unsigned char)(divisor & 0xff); | |
84fe6e79 | 1847 | dbg("set_serial_baud Value to write DLL is %x", Data); |
3f542974 PS |
1848 | mos7840_set_uart_reg(port, DIVISOR_LATCH_LSB, Data); |
1849 | ||
1850 | Data = (unsigned char)((divisor & 0xff00) >> 8); | |
84fe6e79 | 1851 | dbg("set_serial_baud Value to write DLM is %x", Data); |
3f542974 PS |
1852 | mos7840_set_uart_reg(port, DIVISOR_LATCH_MSB, Data); |
1853 | ||
1854 | /* Disable access to divisor latch */ | |
1855 | Data = mos7840_port->shadowLCR & ~SERIAL_LCR_DLAB; | |
1856 | mos7840_port->shadowLCR = Data; | |
1857 | mos7840_set_uart_reg(port, LINE_CONTROL_REGISTER, Data); | |
1858 | ||
1859 | } | |
3f542974 PS |
1860 | return status; |
1861 | } | |
1862 | ||
1863 | /***************************************************************************** | |
1864 | * mos7840_change_port_settings | |
1865 | * This routine is called to set the UART on the device to match | |
1866 | * the specified new settings. | |
1867 | *****************************************************************************/ | |
1868 | ||
95da310e AC |
1869 | static void mos7840_change_port_settings(struct tty_struct *tty, |
1870 | struct moschip_port *mos7840_port, struct ktermios *old_termios) | |
3f542974 | 1871 | { |
3f542974 PS |
1872 | int baud; |
1873 | unsigned cflag; | |
1874 | unsigned iflag; | |
1875 | __u8 lData; | |
1876 | __u8 lParity; | |
1877 | __u8 lStop; | |
1878 | int status; | |
1879 | __u16 Data; | |
1880 | struct usb_serial_port *port; | |
1881 | struct usb_serial *serial; | |
1882 | ||
1883 | if (mos7840_port == NULL) | |
1884 | return; | |
1885 | ||
1886 | port = (struct usb_serial_port *)mos7840_port->port; | |
1887 | ||
441b62c1 | 1888 | if (mos7840_port_paranoia_check(port, __func__)) { |
84fe6e79 | 1889 | dbg("%s", "Invalid port"); |
3f542974 PS |
1890 | return; |
1891 | } | |
1892 | ||
441b62c1 | 1893 | if (mos7840_serial_paranoia_check(port->serial, __func__)) { |
84fe6e79 | 1894 | dbg("%s", "Invalid Serial"); |
3f542974 PS |
1895 | return; |
1896 | } | |
1897 | ||
1898 | serial = port->serial; | |
1899 | ||
441b62c1 | 1900 | dbg("%s - port %d", __func__, mos7840_port->port->number); |
3f542974 PS |
1901 | |
1902 | if (!mos7840_port->open) { | |
441b62c1 | 1903 | dbg("%s - port not opened", __func__); |
3f542974 PS |
1904 | return; |
1905 | } | |
1906 | ||
84fe6e79 | 1907 | dbg("%s", "Entering .........."); |
3f542974 PS |
1908 | |
1909 | lData = LCR_BITS_8; | |
1910 | lStop = LCR_STOP_1; | |
1911 | lParity = LCR_PAR_NONE; | |
1912 | ||
1913 | cflag = tty->termios->c_cflag; | |
1914 | iflag = tty->termios->c_iflag; | |
1915 | ||
1916 | /* Change the number of bits */ | |
1917 | if (cflag & CSIZE) { | |
1918 | switch (cflag & CSIZE) { | |
1919 | case CS5: | |
1920 | lData = LCR_BITS_5; | |
1921 | break; | |
1922 | ||
1923 | case CS6: | |
1924 | lData = LCR_BITS_6; | |
1925 | break; | |
1926 | ||
1927 | case CS7: | |
1928 | lData = LCR_BITS_7; | |
1929 | break; | |
1930 | default: | |
1931 | case CS8: | |
1932 | lData = LCR_BITS_8; | |
1933 | break; | |
1934 | } | |
1935 | } | |
1936 | /* Change the Parity bit */ | |
1937 | if (cflag & PARENB) { | |
1938 | if (cflag & PARODD) { | |
1939 | lParity = LCR_PAR_ODD; | |
441b62c1 | 1940 | dbg("%s - parity = odd", __func__); |
3f542974 PS |
1941 | } else { |
1942 | lParity = LCR_PAR_EVEN; | |
441b62c1 | 1943 | dbg("%s - parity = even", __func__); |
3f542974 PS |
1944 | } |
1945 | ||
1946 | } else { | |
441b62c1 | 1947 | dbg("%s - parity = none", __func__); |
3f542974 PS |
1948 | } |
1949 | ||
880af9db | 1950 | if (cflag & CMSPAR) |
3f542974 | 1951 | lParity = lParity | 0x20; |
3f542974 PS |
1952 | |
1953 | /* Change the Stop bit */ | |
1954 | if (cflag & CSTOPB) { | |
1955 | lStop = LCR_STOP_2; | |
441b62c1 | 1956 | dbg("%s - stop bits = 2", __func__); |
3f542974 PS |
1957 | } else { |
1958 | lStop = LCR_STOP_1; | |
441b62c1 | 1959 | dbg("%s - stop bits = 1", __func__); |
3f542974 PS |
1960 | } |
1961 | ||
1962 | /* Update the LCR with the correct value */ | |
1963 | mos7840_port->shadowLCR &= | |
1964 | ~(LCR_BITS_MASK | LCR_STOP_MASK | LCR_PAR_MASK); | |
1965 | mos7840_port->shadowLCR |= (lData | lParity | lStop); | |
1966 | ||
84fe6e79 | 1967 | dbg("mos7840_change_port_settings mos7840_port->shadowLCR is %x", |
3f542974 PS |
1968 | mos7840_port->shadowLCR); |
1969 | /* Disable Interrupts */ | |
1970 | Data = 0x00; | |
1971 | mos7840_set_uart_reg(port, INTERRUPT_ENABLE_REGISTER, Data); | |
1972 | ||
1973 | Data = 0x00; | |
1974 | mos7840_set_uart_reg(port, FIFO_CONTROL_REGISTER, Data); | |
1975 | ||
1976 | Data = 0xcf; | |
1977 | mos7840_set_uart_reg(port, FIFO_CONTROL_REGISTER, Data); | |
1978 | ||
1979 | /* Send the updated LCR value to the mos7840 */ | |
1980 | Data = mos7840_port->shadowLCR; | |
1981 | ||
1982 | mos7840_set_uart_reg(port, LINE_CONTROL_REGISTER, Data); | |
1983 | ||
1984 | Data = 0x00b; | |
1985 | mos7840_port->shadowMCR = Data; | |
1986 | mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, Data); | |
1987 | Data = 0x00b; | |
1988 | mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, Data); | |
1989 | ||
1990 | /* set up the MCR register and send it to the mos7840 */ | |
1991 | ||
1992 | mos7840_port->shadowMCR = MCR_MASTER_IE; | |
880af9db | 1993 | if (cflag & CBAUD) |
3f542974 | 1994 | mos7840_port->shadowMCR |= (MCR_DTR | MCR_RTS); |
3f542974 | 1995 | |
880af9db | 1996 | if (cflag & CRTSCTS) |
3f542974 | 1997 | mos7840_port->shadowMCR |= (MCR_XON_ANY); |
880af9db | 1998 | else |
3f542974 | 1999 | mos7840_port->shadowMCR &= ~(MCR_XON_ANY); |
3f542974 PS |
2000 | |
2001 | Data = mos7840_port->shadowMCR; | |
2002 | mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, Data); | |
2003 | ||
2004 | /* Determine divisor based on baud rate */ | |
2005 | baud = tty_get_baud_rate(tty); | |
2006 | ||
2007 | if (!baud) { | |
2008 | /* pick a default, any default... */ | |
84fe6e79 | 2009 | dbg("%s", "Picked default baud..."); |
3f542974 PS |
2010 | baud = 9600; |
2011 | } | |
2012 | ||
441b62c1 | 2013 | dbg("%s - baud rate = %d", __func__, baud); |
3f542974 PS |
2014 | status = mos7840_send_cmd_write_baud_rate(mos7840_port, baud); |
2015 | ||
2016 | /* Enable Interrupts */ | |
2017 | Data = 0x0c; | |
2018 | mos7840_set_uart_reg(port, INTERRUPT_ENABLE_REGISTER, Data); | |
2019 | ||
50de36f7 | 2020 | if (mos7840_port->read_urb_busy == false) { |
3f542974 | 2021 | mos7840_port->read_urb->dev = serial->dev; |
50de36f7 | 2022 | mos7840_port->read_urb_busy = true; |
3f542974 | 2023 | status = usb_submit_urb(mos7840_port->read_urb, GFP_ATOMIC); |
3f542974 | 2024 | if (status) { |
50de36f7 | 2025 | dbg("usb_submit_urb(read bulk) failed, status = %d", |
3f542974 | 2026 | status); |
50de36f7 | 2027 | mos7840_port->read_urb_busy = false; |
3f542974 PS |
2028 | } |
2029 | } | |
2030 | wake_up(&mos7840_port->delta_msr_wait); | |
2031 | mos7840_port->delta_msr_cond = 1; | |
84fe6e79 | 2032 | dbg("mos7840_change_port_settings mos7840_port->shadowLCR is End %x", |
3f542974 PS |
2033 | mos7840_port->shadowLCR); |
2034 | ||
2035 | return; | |
2036 | } | |
2037 | ||
2038 | /***************************************************************************** | |
2039 | * mos7840_set_termios | |
2040 | * this function is called by the tty driver when it wants to change | |
2041 | * the termios structure | |
2042 | *****************************************************************************/ | |
2043 | ||
95da310e AC |
2044 | static void mos7840_set_termios(struct tty_struct *tty, |
2045 | struct usb_serial_port *port, | |
606d099c | 2046 | struct ktermios *old_termios) |
3f542974 PS |
2047 | { |
2048 | int status; | |
2049 | unsigned int cflag; | |
2050 | struct usb_serial *serial; | |
2051 | struct moschip_port *mos7840_port; | |
84fe6e79 | 2052 | dbg("mos7840_set_termios: START"); |
441b62c1 | 2053 | if (mos7840_port_paranoia_check(port, __func__)) { |
84fe6e79 | 2054 | dbg("%s", "Invalid port"); |
3f542974 PS |
2055 | return; |
2056 | } | |
2057 | ||
2058 | serial = port->serial; | |
2059 | ||
441b62c1 | 2060 | if (mos7840_serial_paranoia_check(serial, __func__)) { |
84fe6e79 | 2061 | dbg("%s", "Invalid Serial"); |
3f542974 PS |
2062 | return; |
2063 | } | |
2064 | ||
2065 | mos7840_port = mos7840_get_port_private(port); | |
2066 | ||
2067 | if (mos7840_port == NULL) | |
2068 | return; | |
2069 | ||
3f542974 | 2070 | if (!mos7840_port->open) { |
441b62c1 | 2071 | dbg("%s - port not opened", __func__); |
3f542974 PS |
2072 | return; |
2073 | } | |
2074 | ||
84fe6e79 | 2075 | dbg("%s", "setting termios - "); |
3f542974 PS |
2076 | |
2077 | cflag = tty->termios->c_cflag; | |
2078 | ||
441b62c1 | 2079 | dbg("%s - clfag %08x iflag %08x", __func__, |
3f542974 | 2080 | tty->termios->c_cflag, RELEVANT_IFLAG(tty->termios->c_iflag)); |
441b62c1 | 2081 | dbg("%s - old clfag %08x old iflag %08x", __func__, |
3d3ddce5 | 2082 | old_termios->c_cflag, RELEVANT_IFLAG(old_termios->c_iflag)); |
441b62c1 | 2083 | dbg("%s - port %d", __func__, port->number); |
3f542974 PS |
2084 | |
2085 | /* change the port settings to the new ones specified */ | |
2086 | ||
95da310e | 2087 | mos7840_change_port_settings(tty, mos7840_port, old_termios); |
3f542974 PS |
2088 | |
2089 | if (!mos7840_port->read_urb) { | |
84fe6e79 | 2090 | dbg("%s", "URB KILLED !!!!!"); |
3f542974 PS |
2091 | return; |
2092 | } | |
2093 | ||
50de36f7 | 2094 | if (mos7840_port->read_urb_busy == false) { |
3f542974 | 2095 | mos7840_port->read_urb->dev = serial->dev; |
50de36f7 | 2096 | mos7840_port->read_urb_busy = true; |
3f542974 PS |
2097 | status = usb_submit_urb(mos7840_port->read_urb, GFP_ATOMIC); |
2098 | if (status) { | |
50de36f7 | 2099 | dbg("usb_submit_urb(read bulk) failed, status = %d", |
3f542974 | 2100 | status); |
50de36f7 | 2101 | mos7840_port->read_urb_busy = false; |
3f542974 PS |
2102 | } |
2103 | } | |
2104 | return; | |
2105 | } | |
2106 | ||
2107 | /***************************************************************************** | |
2108 | * mos7840_get_lsr_info - get line status register info | |
2109 | * | |
2110 | * Purpose: Let user call ioctl() to get info when the UART physically | |
2111 | * is emptied. On bus types like RS485, the transmitter must | |
2112 | * release the bus after transmitting. This must be done when | |
2113 | * the transmit shift register is empty, not be done when the | |
2114 | * transmit holding register is empty. This functionality | |
2115 | * allows an RS485 driver to be written in user space. | |
2116 | *****************************************************************************/ | |
2117 | ||
95da310e | 2118 | static int mos7840_get_lsr_info(struct tty_struct *tty, |
97c4965d | 2119 | unsigned int __user *value) |
3f542974 PS |
2120 | { |
2121 | int count; | |
2122 | unsigned int result = 0; | |
2123 | ||
95da310e | 2124 | count = mos7840_chars_in_buffer(tty); |
3f542974 | 2125 | if (count == 0) { |
441b62c1 | 2126 | dbg("%s -- Empty", __func__); |
3f542974 PS |
2127 | result = TIOCSER_TEMT; |
2128 | } | |
2129 | ||
2130 | if (copy_to_user(value, &result, sizeof(int))) | |
2131 | return -EFAULT; | |
2132 | return 0; | |
2133 | } | |
2134 | ||
3f542974 PS |
2135 | /***************************************************************************** |
2136 | * mos7840_get_serial_info | |
2137 | * function to get information about serial port | |
2138 | *****************************************************************************/ | |
2139 | ||
2140 | static int mos7840_get_serial_info(struct moschip_port *mos7840_port, | |
97c4965d | 2141 | struct serial_struct __user *retinfo) |
3f542974 PS |
2142 | { |
2143 | struct serial_struct tmp; | |
2144 | ||
2145 | if (mos7840_port == NULL) | |
2146 | return -1; | |
2147 | ||
2148 | if (!retinfo) | |
2149 | return -EFAULT; | |
2150 | ||
2151 | memset(&tmp, 0, sizeof(tmp)); | |
2152 | ||
2153 | tmp.type = PORT_16550A; | |
2154 | tmp.line = mos7840_port->port->serial->minor; | |
2155 | tmp.port = mos7840_port->port->number; | |
2156 | tmp.irq = 0; | |
2157 | tmp.flags = ASYNC_SKIP_TEST | ASYNC_AUTO_IRQ; | |
2158 | tmp.xmit_fifo_size = NUM_URBS * URB_TRANSFER_BUFFER_SIZE; | |
2159 | tmp.baud_base = 9600; | |
2160 | tmp.close_delay = 5 * HZ; | |
2161 | tmp.closing_wait = 30 * HZ; | |
2162 | ||
2163 | if (copy_to_user(retinfo, &tmp, sizeof(*retinfo))) | |
2164 | return -EFAULT; | |
2165 | return 0; | |
2166 | } | |
2167 | ||
2168 | /***************************************************************************** | |
2169 | * SerialIoctl | |
2170 | * this function handles any ioctl calls to the driver | |
2171 | *****************************************************************************/ | |
2172 | ||
95da310e | 2173 | static int mos7840_ioctl(struct tty_struct *tty, struct file *file, |
3f542974 PS |
2174 | unsigned int cmd, unsigned long arg) |
2175 | { | |
95da310e | 2176 | struct usb_serial_port *port = tty->driver_data; |
97c4965d | 2177 | void __user *argp = (void __user *)arg; |
3f542974 | 2178 | struct moschip_port *mos7840_port; |
3f542974 PS |
2179 | |
2180 | struct async_icount cnow; | |
2181 | struct async_icount cprev; | |
2182 | struct serial_icounter_struct icount; | |
3f542974 | 2183 | |
441b62c1 | 2184 | if (mos7840_port_paranoia_check(port, __func__)) { |
84fe6e79 | 2185 | dbg("%s", "Invalid port"); |
3f542974 PS |
2186 | return -1; |
2187 | } | |
2188 | ||
2189 | mos7840_port = mos7840_get_port_private(port); | |
3f542974 PS |
2190 | |
2191 | if (mos7840_port == NULL) | |
2192 | return -1; | |
2193 | ||
441b62c1 | 2194 | dbg("%s - port %d, cmd = 0x%x", __func__, port->number, cmd); |
3f542974 PS |
2195 | |
2196 | switch (cmd) { | |
2197 | /* return number of bytes available */ | |
2198 | ||
3f542974 | 2199 | case TIOCSERGETLSR: |
441b62c1 | 2200 | dbg("%s (%d) TIOCSERGETLSR", __func__, port->number); |
95da310e | 2201 | return mos7840_get_lsr_info(tty, argp); |
3f542974 PS |
2202 | return 0; |
2203 | ||
3f542974 | 2204 | case TIOCGSERIAL: |
441b62c1 | 2205 | dbg("%s (%d) TIOCGSERIAL", __func__, port->number); |
97c4965d | 2206 | return mos7840_get_serial_info(mos7840_port, argp); |
3f542974 PS |
2207 | |
2208 | case TIOCSSERIAL: | |
441b62c1 | 2209 | dbg("%s (%d) TIOCSSERIAL", __func__, port->number); |
3f542974 PS |
2210 | break; |
2211 | ||
2212 | case TIOCMIWAIT: | |
441b62c1 | 2213 | dbg("%s (%d) TIOCMIWAIT", __func__, port->number); |
3f542974 PS |
2214 | cprev = mos7840_port->icount; |
2215 | while (1) { | |
880af9db | 2216 | /* interruptible_sleep_on(&mos7840_port->delta_msr_wait); */ |
3f542974 PS |
2217 | mos7840_port->delta_msr_cond = 0; |
2218 | wait_event_interruptible(mos7840_port->delta_msr_wait, | |
2219 | (mos7840_port-> | |
2220 | delta_msr_cond == 1)); | |
2221 | ||
2222 | /* see if a signal did it */ | |
2223 | if (signal_pending(current)) | |
2224 | return -ERESTARTSYS; | |
2225 | cnow = mos7840_port->icount; | |
0de9a702 | 2226 | smp_rmb(); |
3f542974 PS |
2227 | if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr && |
2228 | cnow.dcd == cprev.dcd && cnow.cts == cprev.cts) | |
2229 | return -EIO; /* no change => error */ | |
2230 | if (((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) || | |
2231 | ((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) || | |
2232 | ((arg & TIOCM_CD) && (cnow.dcd != cprev.dcd)) || | |
2233 | ((arg & TIOCM_CTS) && (cnow.cts != cprev.cts))) { | |
2234 | return 0; | |
2235 | } | |
2236 | cprev = cnow; | |
2237 | } | |
2238 | /* NOTREACHED */ | |
2239 | break; | |
2240 | ||
2241 | case TIOCGICOUNT: | |
2242 | cnow = mos7840_port->icount; | |
0de9a702 | 2243 | smp_rmb(); |
3f542974 PS |
2244 | icount.cts = cnow.cts; |
2245 | icount.dsr = cnow.dsr; | |
2246 | icount.rng = cnow.rng; | |
2247 | icount.dcd = cnow.dcd; | |
2248 | icount.rx = cnow.rx; | |
2249 | icount.tx = cnow.tx; | |
2250 | icount.frame = cnow.frame; | |
2251 | icount.overrun = cnow.overrun; | |
2252 | icount.parity = cnow.parity; | |
2253 | icount.brk = cnow.brk; | |
2254 | icount.buf_overrun = cnow.buf_overrun; | |
2255 | ||
441b62c1 | 2256 | dbg("%s (%d) TIOCGICOUNT RX=%d, TX=%d", __func__, |
3f542974 | 2257 | port->number, icount.rx, icount.tx); |
97c4965d | 2258 | if (copy_to_user(argp, &icount, sizeof(icount))) |
3f542974 PS |
2259 | return -EFAULT; |
2260 | return 0; | |
3f542974 PS |
2261 | default: |
2262 | break; | |
2263 | } | |
3f542974 PS |
2264 | return -ENOIOCTLCMD; |
2265 | } | |
2266 | ||
2267 | static int mos7840_calc_num_ports(struct usb_serial *serial) | |
2268 | { | |
0de9a702 | 2269 | int mos7840_num_ports = 0; |
3f542974 | 2270 | |
84fe6e79 TC |
2271 | dbg("numberofendpoints: cur %d, alt %d", |
2272 | (int)serial->interface->cur_altsetting->desc.bNumEndpoints, | |
3f542974 PS |
2273 | (int)serial->interface->altsetting->desc.bNumEndpoints); |
2274 | if (serial->interface->cur_altsetting->desc.bNumEndpoints == 5) { | |
0de9a702 | 2275 | mos7840_num_ports = serial->num_ports = 2; |
3f542974 | 2276 | } else if (serial->interface->cur_altsetting->desc.bNumEndpoints == 9) { |
0de9a702 ON |
2277 | serial->num_bulk_in = 4; |
2278 | serial->num_bulk_out = 4; | |
2279 | mos7840_num_ports = serial->num_ports = 4; | |
3f542974 | 2280 | } |
84fe6e79 | 2281 | dbg ("mos7840_num_ports = %d", mos7840_num_ports); |
3f542974 PS |
2282 | return mos7840_num_ports; |
2283 | } | |
2284 | ||
2285 | /**************************************************************************** | |
2286 | * mos7840_startup | |
2287 | ****************************************************************************/ | |
2288 | ||
2289 | static int mos7840_startup(struct usb_serial *serial) | |
2290 | { | |
2291 | struct moschip_port *mos7840_port; | |
2292 | struct usb_device *dev; | |
2293 | int i, status; | |
2294 | ||
2295 | __u16 Data; | |
84fe6e79 | 2296 | dbg("%s", "mos7840_startup :Entering.........."); |
3f542974 PS |
2297 | |
2298 | if (!serial) { | |
84fe6e79 | 2299 | dbg("%s", "Invalid Handler"); |
3f542974 PS |
2300 | return -1; |
2301 | } | |
2302 | ||
2303 | dev = serial->dev; | |
2304 | ||
84fe6e79 TC |
2305 | dbg("%s", "Entering..."); |
2306 | dbg ("mos7840_startup: serial = %p", serial); | |
3f542974 PS |
2307 | |
2308 | /* we set up the pointers to the endpoints in the mos7840_open * | |
2309 | * function, as the structures aren't created yet. */ | |
2310 | ||
2311 | /* set up port private structures */ | |
2312 | for (i = 0; i < serial->num_ports; ++i) { | |
84fe6e79 | 2313 | dbg ("mos7840_startup: configuring port %d............", i); |
7ac9da10 | 2314 | mos7840_port = kzalloc(sizeof(struct moschip_port), GFP_KERNEL); |
3f542974 | 2315 | if (mos7840_port == NULL) { |
194343d9 | 2316 | dev_err(&dev->dev, "%s - Out of memory\n", __func__); |
0de9a702 ON |
2317 | status = -ENOMEM; |
2318 | i--; /* don't follow NULL pointer cleaning up */ | |
2319 | goto error; | |
3f542974 | 2320 | } |
3f542974 | 2321 | |
880af9db AC |
2322 | /* Initialize all port interrupt end point to port 0 int |
2323 | * endpoint. Our device has only one interrupt end point | |
2324 | * common to all port */ | |
3f542974 PS |
2325 | |
2326 | mos7840_port->port = serial->port[i]; | |
2327 | mos7840_set_port_private(serial->port[i], mos7840_port); | |
0de9a702 | 2328 | spin_lock_init(&mos7840_port->pool_lock); |
3f542974 | 2329 | |
37768adf TC |
2330 | /* minor is not initialised until later by |
2331 | * usb-serial.c:get_free_serial() and cannot therefore be used | |
2332 | * to index device instances */ | |
2333 | mos7840_port->port_num = i + 1; | |
2334 | dbg ("serial->port[i]->number = %d", serial->port[i]->number); | |
2335 | dbg ("serial->port[i]->serial->minor = %d", serial->port[i]->serial->minor); | |
2336 | dbg ("mos7840_port->port_num = %d", mos7840_port->port_num); | |
2337 | dbg ("serial->minor = %d", serial->minor); | |
3f542974 PS |
2338 | |
2339 | if (mos7840_port->port_num == 1) { | |
2340 | mos7840_port->SpRegOffset = 0x0; | |
2341 | mos7840_port->ControlRegOffset = 0x1; | |
2342 | mos7840_port->DcrRegOffset = 0x4; | |
2343 | } else if ((mos7840_port->port_num == 2) | |
0de9a702 | 2344 | && (serial->num_ports == 4)) { |
3f542974 PS |
2345 | mos7840_port->SpRegOffset = 0x8; |
2346 | mos7840_port->ControlRegOffset = 0x9; | |
2347 | mos7840_port->DcrRegOffset = 0x16; | |
2348 | } else if ((mos7840_port->port_num == 2) | |
0de9a702 | 2349 | && (serial->num_ports == 2)) { |
3f542974 PS |
2350 | mos7840_port->SpRegOffset = 0xa; |
2351 | mos7840_port->ControlRegOffset = 0xb; | |
2352 | mos7840_port->DcrRegOffset = 0x19; | |
2353 | } else if ((mos7840_port->port_num == 3) | |
0de9a702 | 2354 | && (serial->num_ports == 4)) { |
3f542974 PS |
2355 | mos7840_port->SpRegOffset = 0xa; |
2356 | mos7840_port->ControlRegOffset = 0xb; | |
2357 | mos7840_port->DcrRegOffset = 0x19; | |
2358 | } else if ((mos7840_port->port_num == 4) | |
0de9a702 | 2359 | && (serial->num_ports == 4)) { |
3f542974 PS |
2360 | mos7840_port->SpRegOffset = 0xc; |
2361 | mos7840_port->ControlRegOffset = 0xd; | |
2362 | mos7840_port->DcrRegOffset = 0x1c; | |
2363 | } | |
2364 | mos7840_dump_serial_port(mos7840_port); | |
3f542974 PS |
2365 | mos7840_set_port_private(serial->port[i], mos7840_port); |
2366 | ||
880af9db AC |
2367 | /* enable rx_disable bit in control register */ |
2368 | status = mos7840_get_reg_sync(serial->port[i], | |
2369 | mos7840_port->ControlRegOffset, &Data); | |
3f542974 | 2370 | if (status < 0) { |
84fe6e79 | 2371 | dbg("Reading ControlReg failed status-0x%x", status); |
3f542974 PS |
2372 | break; |
2373 | } else | |
84fe6e79 | 2374 | dbg("ControlReg Reading success val is %x, status%d", |
3f542974 | 2375 | Data, status); |
880af9db AC |
2376 | Data |= 0x08; /* setting driver done bit */ |
2377 | Data |= 0x04; /* sp1_bit to have cts change reflect in | |
2378 | modem status reg */ | |
3f542974 | 2379 | |
880af9db AC |
2380 | /* Data |= 0x20; //rx_disable bit */ |
2381 | status = mos7840_set_reg_sync(serial->port[i], | |
3f542974 PS |
2382 | mos7840_port->ControlRegOffset, Data); |
2383 | if (status < 0) { | |
84fe6e79 | 2384 | dbg("Writing ControlReg failed(rx_disable) status-0x%x", status); |
3f542974 PS |
2385 | break; |
2386 | } else | |
84fe6e79 | 2387 | dbg("ControlReg Writing success(rx_disable) status%d", |
3f542974 PS |
2388 | status); |
2389 | ||
880af9db AC |
2390 | /* Write default values in DCR (i.e 0x01 in DCR0, 0x05 in DCR2 |
2391 | and 0x24 in DCR3 */ | |
3f542974 | 2392 | Data = 0x01; |
880af9db AC |
2393 | status = mos7840_set_reg_sync(serial->port[i], |
2394 | (__u16) (mos7840_port->DcrRegOffset + 0), Data); | |
3f542974 | 2395 | if (status < 0) { |
84fe6e79 | 2396 | dbg("Writing DCR0 failed status-0x%x", status); |
3f542974 PS |
2397 | break; |
2398 | } else | |
84fe6e79 | 2399 | dbg("DCR0 Writing success status%d", status); |
3f542974 PS |
2400 | |
2401 | Data = 0x05; | |
880af9db AC |
2402 | status = mos7840_set_reg_sync(serial->port[i], |
2403 | (__u16) (mos7840_port->DcrRegOffset + 1), Data); | |
3f542974 | 2404 | if (status < 0) { |
84fe6e79 | 2405 | dbg("Writing DCR1 failed status-0x%x", status); |
3f542974 PS |
2406 | break; |
2407 | } else | |
84fe6e79 | 2408 | dbg("DCR1 Writing success status%d", status); |
3f542974 PS |
2409 | |
2410 | Data = 0x24; | |
880af9db AC |
2411 | status = mos7840_set_reg_sync(serial->port[i], |
2412 | (__u16) (mos7840_port->DcrRegOffset + 2), Data); | |
3f542974 | 2413 | if (status < 0) { |
84fe6e79 | 2414 | dbg("Writing DCR2 failed status-0x%x", status); |
3f542974 PS |
2415 | break; |
2416 | } else | |
84fe6e79 | 2417 | dbg("DCR2 Writing success status%d", status); |
3f542974 | 2418 | |
880af9db | 2419 | /* write values in clkstart0x0 and clkmulti 0x20 */ |
3f542974 | 2420 | Data = 0x0; |
880af9db | 2421 | status = mos7840_set_reg_sync(serial->port[i], |
3f542974 PS |
2422 | CLK_START_VALUE_REGISTER, Data); |
2423 | if (status < 0) { | |
84fe6e79 | 2424 | dbg("Writing CLK_START_VALUE_REGISTER failed status-0x%x", status); |
3f542974 PS |
2425 | break; |
2426 | } else | |
84fe6e79 | 2427 | dbg("CLK_START_VALUE_REGISTER Writing success status%d", status); |
3f542974 PS |
2428 | |
2429 | Data = 0x20; | |
880af9db AC |
2430 | status = mos7840_set_reg_sync(serial->port[i], |
2431 | CLK_MULTI_REGISTER, Data); | |
3f542974 | 2432 | if (status < 0) { |
84fe6e79 | 2433 | dbg("Writing CLK_MULTI_REGISTER failed status-0x%x", |
3f542974 | 2434 | status); |
0de9a702 | 2435 | goto error; |
3f542974 | 2436 | } else |
84fe6e79 | 2437 | dbg("CLK_MULTI_REGISTER Writing success status%d", |
3f542974 PS |
2438 | status); |
2439 | ||
880af9db | 2440 | /* write value 0x0 to scratchpad register */ |
3f542974 | 2441 | Data = 0x00; |
880af9db AC |
2442 | status = mos7840_set_uart_reg(serial->port[i], |
2443 | SCRATCH_PAD_REGISTER, Data); | |
3f542974 | 2444 | if (status < 0) { |
84fe6e79 | 2445 | dbg("Writing SCRATCH_PAD_REGISTER failed status-0x%x", |
3f542974 PS |
2446 | status); |
2447 | break; | |
2448 | } else | |
84fe6e79 | 2449 | dbg("SCRATCH_PAD_REGISTER Writing success status%d", |
3f542974 PS |
2450 | status); |
2451 | ||
880af9db | 2452 | /* Zero Length flag register */ |
3f542974 | 2453 | if ((mos7840_port->port_num != 1) |
0de9a702 | 2454 | && (serial->num_ports == 2)) { |
3f542974 PS |
2455 | |
2456 | Data = 0xff; | |
3f542974 | 2457 | status = mos7840_set_reg_sync(serial->port[i], |
880af9db AC |
2458 | (__u16) (ZLP_REG1 + |
2459 | ((__u16)mos7840_port->port_num)), Data); | |
84fe6e79 | 2460 | dbg("ZLIP offset %x", |
3f542974 | 2461 | (__u16) (ZLP_REG1 + |
880af9db | 2462 | ((__u16) mos7840_port->port_num))); |
3f542974 | 2463 | if (status < 0) { |
84fe6e79 | 2464 | dbg("Writing ZLP_REG%d failed status-0x%x", |
3f542974 PS |
2465 | i + 2, status); |
2466 | break; | |
2467 | } else | |
84fe6e79 | 2468 | dbg("ZLP_REG%d Writing success status%d", |
3f542974 PS |
2469 | i + 2, status); |
2470 | } else { | |
2471 | Data = 0xff; | |
3f542974 | 2472 | status = mos7840_set_reg_sync(serial->port[i], |
880af9db AC |
2473 | (__u16) (ZLP_REG1 + |
2474 | ((__u16)mos7840_port->port_num) - 0x1), Data); | |
84fe6e79 | 2475 | dbg("ZLIP offset %x", |
3f542974 PS |
2476 | (__u16) (ZLP_REG1 + |
2477 | ((__u16) mos7840_port->port_num) - 0x1)); | |
2478 | if (status < 0) { | |
84fe6e79 | 2479 | dbg("Writing ZLP_REG%d failed status-0x%x", |
3f542974 PS |
2480 | i + 1, status); |
2481 | break; | |
2482 | } else | |
84fe6e79 | 2483 | dbg("ZLP_REG%d Writing success status%d", |
3f542974 PS |
2484 | i + 1, status); |
2485 | ||
2486 | } | |
0de9a702 | 2487 | mos7840_port->control_urb = usb_alloc_urb(0, GFP_KERNEL); |
3f542974 | 2488 | mos7840_port->ctrl_buf = kmalloc(16, GFP_KERNEL); |
880af9db AC |
2489 | mos7840_port->dr = kmalloc(sizeof(struct usb_ctrlrequest), |
2490 | GFP_KERNEL); | |
2491 | if (!mos7840_port->control_urb || !mos7840_port->ctrl_buf || | |
2492 | !mos7840_port->dr) { | |
0de9a702 ON |
2493 | status = -ENOMEM; |
2494 | goto error; | |
2495 | } | |
3f542974 | 2496 | } |
84fe6e79 | 2497 | dbg ("mos7840_startup: all ports configured..........."); |
3f542974 | 2498 | |
880af9db | 2499 | /* Zero Length flag enable */ |
3f542974 | 2500 | Data = 0x0f; |
3f542974 PS |
2501 | status = mos7840_set_reg_sync(serial->port[0], ZLP_REG5, Data); |
2502 | if (status < 0) { | |
84fe6e79 | 2503 | dbg("Writing ZLP_REG5 failed status-0x%x", status); |
7ced46c3 | 2504 | goto error; |
3f542974 | 2505 | } else |
84fe6e79 | 2506 | dbg("ZLP_REG5 Writing success status%d", status); |
3f542974 PS |
2507 | |
2508 | /* setting configuration feature to one */ | |
2509 | usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), | |
97c4965d | 2510 | (__u8) 0x03, 0x00, 0x01, 0x00, NULL, 0x00, 5 * HZ); |
3f542974 | 2511 | return 0; |
0de9a702 ON |
2512 | error: |
2513 | for (/* nothing */; i >= 0; i--) { | |
2514 | mos7840_port = mos7840_get_port_private(serial->port[i]); | |
2515 | ||
2516 | kfree(mos7840_port->dr); | |
2517 | kfree(mos7840_port->ctrl_buf); | |
2518 | usb_free_urb(mos7840_port->control_urb); | |
2519 | kfree(mos7840_port); | |
2520 | serial->port[i] = NULL; | |
2521 | } | |
2522 | return status; | |
3f542974 PS |
2523 | } |
2524 | ||
2525 | /**************************************************************************** | |
f9c99bb8 | 2526 | * mos7840_disconnect |
3f542974 PS |
2527 | * This function is called whenever the device is removed from the usb bus. |
2528 | ****************************************************************************/ | |
2529 | ||
f9c99bb8 | 2530 | static void mos7840_disconnect(struct usb_serial *serial) |
3f542974 PS |
2531 | { |
2532 | int i; | |
0de9a702 | 2533 | unsigned long flags; |
3f542974 | 2534 | struct moschip_port *mos7840_port; |
f9c99bb8 | 2535 | dbg("%s", " disconnect :entering.........."); |
3f542974 PS |
2536 | |
2537 | if (!serial) { | |
84fe6e79 | 2538 | dbg("%s", "Invalid Handler"); |
3f542974 PS |
2539 | return; |
2540 | } | |
2541 | ||
880af9db | 2542 | /* check for the ports to be closed,close the ports and disconnect */ |
3f542974 PS |
2543 | |
2544 | /* free private structure allocated for serial port * | |
2545 | * stop reads and writes on all ports */ | |
2546 | ||
2547 | for (i = 0; i < serial->num_ports; ++i) { | |
2548 | mos7840_port = mos7840_get_port_private(serial->port[i]); | |
37768adf TC |
2549 | dbg ("mos7840_port %d = %p", i, mos7840_port); |
2550 | if (mos7840_port) { | |
2551 | spin_lock_irqsave(&mos7840_port->pool_lock, flags); | |
2552 | mos7840_port->zombie = 1; | |
2553 | spin_unlock_irqrestore(&mos7840_port->pool_lock, flags); | |
2554 | usb_kill_urb(mos7840_port->control_urb); | |
f9c99bb8 AS |
2555 | } |
2556 | } | |
2557 | ||
2558 | dbg("%s", "Thank u :: "); | |
2559 | ||
2560 | } | |
2561 | ||
2562 | /**************************************************************************** | |
2563 | * mos7840_release | |
2564 | * This function is called when the usb_serial structure is freed. | |
2565 | ****************************************************************************/ | |
2566 | ||
2567 | static void mos7840_release(struct usb_serial *serial) | |
2568 | { | |
2569 | int i; | |
2570 | struct moschip_port *mos7840_port; | |
2571 | dbg("%s", " release :entering.........."); | |
2572 | ||
2573 | if (!serial) { | |
2574 | dbg("%s", "Invalid Handler"); | |
2575 | return; | |
2576 | } | |
2577 | ||
2578 | /* check for the ports to be closed,close the ports and disconnect */ | |
2579 | ||
2580 | /* free private structure allocated for serial port * | |
2581 | * stop reads and writes on all ports */ | |
2582 | ||
2583 | for (i = 0; i < serial->num_ports; ++i) { | |
2584 | mos7840_port = mos7840_get_port_private(serial->port[i]); | |
2585 | dbg("mos7840_port %d = %p", i, mos7840_port); | |
2586 | if (mos7840_port) { | |
37768adf TC |
2587 | kfree(mos7840_port->ctrl_buf); |
2588 | kfree(mos7840_port->dr); | |
2589 | kfree(mos7840_port); | |
2590 | } | |
3f542974 PS |
2591 | } |
2592 | ||
84fe6e79 | 2593 | dbg("%s", "Thank u :: "); |
3f542974 PS |
2594 | |
2595 | } | |
2596 | ||
d9b1b787 JH |
2597 | static struct usb_driver io_driver = { |
2598 | .name = "mos7840", | |
2599 | .probe = usb_serial_probe, | |
2600 | .disconnect = usb_serial_disconnect, | |
2601 | .id_table = moschip_id_table_combined, | |
2602 | .no_dynamic_id = 1, | |
2603 | }; | |
2604 | ||
3f542974 PS |
2605 | static struct usb_serial_driver moschip7840_4port_device = { |
2606 | .driver = { | |
2607 | .owner = THIS_MODULE, | |
2608 | .name = "mos7840", | |
2609 | }, | |
2610 | .description = DRIVER_DESC, | |
d9b1b787 | 2611 | .usb_driver = &io_driver, |
3f542974 | 2612 | .id_table = moschip_port_id_table, |
3f542974 | 2613 | .num_ports = 4, |
3f542974 PS |
2614 | .open = mos7840_open, |
2615 | .close = mos7840_close, | |
2616 | .write = mos7840_write, | |
2617 | .write_room = mos7840_write_room, | |
2618 | .chars_in_buffer = mos7840_chars_in_buffer, | |
2619 | .throttle = mos7840_throttle, | |
2620 | .unthrottle = mos7840_unthrottle, | |
2621 | .calc_num_ports = mos7840_calc_num_ports, | |
2622 | #ifdef MCSSerialProbe | |
2623 | .probe = mos7840_serial_probe, | |
2624 | #endif | |
2625 | .ioctl = mos7840_ioctl, | |
2626 | .set_termios = mos7840_set_termios, | |
2627 | .break_ctl = mos7840_break, | |
2628 | .tiocmget = mos7840_tiocmget, | |
2629 | .tiocmset = mos7840_tiocmset, | |
2630 | .attach = mos7840_startup, | |
f9c99bb8 AS |
2631 | .disconnect = mos7840_disconnect, |
2632 | .release = mos7840_release, | |
3f542974 PS |
2633 | .read_bulk_callback = mos7840_bulk_in_callback, |
2634 | .read_int_callback = mos7840_interrupt_callback, | |
2635 | }; | |
2636 | ||
3f542974 PS |
2637 | /**************************************************************************** |
2638 | * moschip7840_init | |
2639 | * This is called by the module subsystem, or on startup to initialize us | |
2640 | ****************************************************************************/ | |
2641 | static int __init moschip7840_init(void) | |
2642 | { | |
2643 | int retval; | |
2644 | ||
84fe6e79 | 2645 | dbg("%s", " mos7840_init :entering.........."); |
3f542974 PS |
2646 | |
2647 | /* Register with the usb serial */ | |
2648 | retval = usb_serial_register(&moschip7840_4port_device); | |
2649 | ||
2650 | if (retval) | |
2651 | goto failed_port_device_register; | |
2652 | ||
84fe6e79 | 2653 | dbg("%s", "Entering..."); |
c197a8db GKH |
2654 | printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":" |
2655 | DRIVER_DESC "\n"); | |
3f542974 PS |
2656 | |
2657 | /* Register with the usb */ | |
2658 | retval = usb_register(&io_driver); | |
3f542974 | 2659 | if (retval == 0) { |
84fe6e79 | 2660 | dbg("%s", "Leaving..."); |
3f542974 PS |
2661 | return 0; |
2662 | } | |
3f542974 | 2663 | usb_serial_deregister(&moschip7840_4port_device); |
880af9db | 2664 | failed_port_device_register: |
3f542974 PS |
2665 | return retval; |
2666 | } | |
2667 | ||
2668 | /**************************************************************************** | |
2669 | * moschip7840_exit | |
2670 | * Called when the driver is about to be unloaded. | |
2671 | ****************************************************************************/ | |
2672 | static void __exit moschip7840_exit(void) | |
2673 | { | |
2674 | ||
84fe6e79 | 2675 | dbg("%s", " mos7840_exit :entering.........."); |
3f542974 PS |
2676 | |
2677 | usb_deregister(&io_driver); | |
2678 | ||
2679 | usb_serial_deregister(&moschip7840_4port_device); | |
2680 | ||
84fe6e79 | 2681 | dbg("%s", "Entering..."); |
3f542974 PS |
2682 | } |
2683 | ||
2684 | module_init(moschip7840_init); | |
2685 | module_exit(moschip7840_exit); | |
2686 | ||
2687 | /* Module information */ | |
2688 | MODULE_DESCRIPTION(DRIVER_DESC); | |
2689 | MODULE_LICENSE("GPL"); | |
2690 | ||
2691 | module_param(debug, bool, S_IRUGO | S_IWUSR); | |
2692 | MODULE_PARM_DESC(debug, "Debug enabled or not"); |