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3f542974 PS |
1 | /* |
2 | * This program is free software; you can redistribute it and/or modify | |
3 | * it under the terms of the GNU General Public License as published by | |
4 | * the Free Software Foundation; either version 2 of the License, or | |
5 | * (at your option) any later version. | |
6 | * | |
7 | * This program is distributed in the hope that it will be useful, | |
8 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
9 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
10 | * GNU General Public License for more details. | |
11 | * | |
12 | * You should have received a copy of the GNU General Public License | |
13 | * along with this program; if not, write to the Free Software | |
14 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
15 | * | |
16 | * Clean ups from Moschip version and a few ioctl implementations by: | |
17 | * Paul B Schroeder <pschroeder "at" uplogix "dot" com> | |
18 | * | |
19 | * Originally based on drivers/usb/serial/io_edgeport.c which is: | |
20 | * Copyright (C) 2000 Inside Out Networks, All rights reserved. | |
21 | * Copyright (C) 2001-2002 Greg Kroah-Hartman <greg@kroah.com> | |
22 | * | |
23 | */ | |
24 | ||
25 | #include <linux/kernel.h> | |
26 | #include <linux/errno.h> | |
27 | #include <linux/init.h> | |
28 | #include <linux/slab.h> | |
29 | #include <linux/tty.h> | |
30 | #include <linux/tty_driver.h> | |
31 | #include <linux/tty_flip.h> | |
32 | #include <linux/module.h> | |
33 | #include <linux/serial.h> | |
34 | #include <linux/usb.h> | |
35 | #include <linux/usb/serial.h> | |
880af9db | 36 | #include <linux/uaccess.h> |
3f542974 PS |
37 | |
38 | /* | |
39 | * Version Information | |
40 | */ | |
37768adf | 41 | #define DRIVER_VERSION "1.3.2" |
3f542974 PS |
42 | #define DRIVER_DESC "Moschip 7840/7820 USB Serial Driver" |
43 | ||
44 | /* | |
45 | * 16C50 UART register defines | |
46 | */ | |
47 | ||
48 | #define LCR_BITS_5 0x00 /* 5 bits/char */ | |
49 | #define LCR_BITS_6 0x01 /* 6 bits/char */ | |
50 | #define LCR_BITS_7 0x02 /* 7 bits/char */ | |
51 | #define LCR_BITS_8 0x03 /* 8 bits/char */ | |
52 | #define LCR_BITS_MASK 0x03 /* Mask for bits/char field */ | |
53 | ||
54 | #define LCR_STOP_1 0x00 /* 1 stop bit */ | |
55 | #define LCR_STOP_1_5 0x04 /* 1.5 stop bits (if 5 bits/char) */ | |
56 | #define LCR_STOP_2 0x04 /* 2 stop bits (if 6-8 bits/char) */ | |
57 | #define LCR_STOP_MASK 0x04 /* Mask for stop bits field */ | |
58 | ||
59 | #define LCR_PAR_NONE 0x00 /* No parity */ | |
60 | #define LCR_PAR_ODD 0x08 /* Odd parity */ | |
61 | #define LCR_PAR_EVEN 0x18 /* Even parity */ | |
62 | #define LCR_PAR_MARK 0x28 /* Force parity bit to 1 */ | |
63 | #define LCR_PAR_SPACE 0x38 /* Force parity bit to 0 */ | |
64 | #define LCR_PAR_MASK 0x38 /* Mask for parity field */ | |
65 | ||
66 | #define LCR_SET_BREAK 0x40 /* Set Break condition */ | |
67 | #define LCR_DL_ENABLE 0x80 /* Enable access to divisor latch */ | |
68 | ||
69 | #define MCR_DTR 0x01 /* Assert DTR */ | |
70 | #define MCR_RTS 0x02 /* Assert RTS */ | |
71 | #define MCR_OUT1 0x04 /* Loopback only: Sets state of RI */ | |
72 | #define MCR_MASTER_IE 0x08 /* Enable interrupt outputs */ | |
73 | #define MCR_LOOPBACK 0x10 /* Set internal (digital) loopback mode */ | |
74 | #define MCR_XON_ANY 0x20 /* Enable any char to exit XOFF mode */ | |
75 | ||
76 | #define MOS7840_MSR_CTS 0x10 /* Current state of CTS */ | |
77 | #define MOS7840_MSR_DSR 0x20 /* Current state of DSR */ | |
78 | #define MOS7840_MSR_RI 0x40 /* Current state of RI */ | |
79 | #define MOS7840_MSR_CD 0x80 /* Current state of CD */ | |
80 | ||
81 | /* | |
82 | * Defines used for sending commands to port | |
83 | */ | |
84 | ||
880af9db AC |
85 | #define WAIT_FOR_EVER (HZ * 0) /* timeout urb is wait for ever */ |
86 | #define MOS_WDR_TIMEOUT (HZ * 5) /* default urb timeout */ | |
3f542974 PS |
87 | |
88 | #define MOS_PORT1 0x0200 | |
89 | #define MOS_PORT2 0x0300 | |
90 | #define MOS_VENREG 0x0000 | |
91 | #define MOS_MAX_PORT 0x02 | |
92 | #define MOS_WRITE 0x0E | |
93 | #define MOS_READ 0x0D | |
94 | ||
95 | /* Requests */ | |
96 | #define MCS_RD_RTYPE 0xC0 | |
97 | #define MCS_WR_RTYPE 0x40 | |
98 | #define MCS_RDREQ 0x0D | |
99 | #define MCS_WRREQ 0x0E | |
100 | #define MCS_CTRL_TIMEOUT 500 | |
101 | #define VENDOR_READ_LENGTH (0x01) | |
102 | ||
103 | #define MAX_NAME_LEN 64 | |
104 | ||
880af9db AC |
105 | #define ZLP_REG1 0x3A /* Zero_Flag_Reg1 58 */ |
106 | #define ZLP_REG5 0x3E /* Zero_Flag_Reg5 62 */ | |
3f542974 PS |
107 | |
108 | /* For higher baud Rates use TIOCEXBAUD */ | |
109 | #define TIOCEXBAUD 0x5462 | |
110 | ||
111 | /* vendor id and device id defines */ | |
112 | ||
11e1abb4 | 113 | /* The native mos7840/7820 component */ |
3f542974 PS |
114 | #define USB_VENDOR_ID_MOSCHIP 0x9710 |
115 | #define MOSCHIP_DEVICE_ID_7840 0x7840 | |
116 | #define MOSCHIP_DEVICE_ID_7820 0x7820 | |
11e1abb4 DL |
117 | /* The native component can have its vendor/device id's overridden |
118 | * in vendor-specific implementations. Such devices can be handled | |
119 | * by making a change here, in moschip_port_id_table, and in | |
120 | * moschip_id_table_combined | |
121 | */ | |
122 | #define USB_VENDOR_ID_BANDB 0x0856 | |
acf509ae CB |
123 | #define BANDB_DEVICE_ID_USO9ML2_2 0xAC22 |
124 | #define BANDB_DEVICE_ID_USO9ML2_4 0xAC24 | |
125 | #define BANDB_DEVICE_ID_US9ML2_2 0xAC29 | |
126 | #define BANDB_DEVICE_ID_US9ML2_4 0xAC30 | |
127 | #define BANDB_DEVICE_ID_USPTL4_2 0xAC31 | |
128 | #define BANDB_DEVICE_ID_USPTL4_4 0xAC32 | |
27f1281d BG |
129 | #define BANDB_DEVICE_ID_USOPTL4_2 0xAC42 |
130 | #define BANDB_DEVICE_ID_USOPTL4_4 0xAC44 | |
131 | #define BANDB_DEVICE_ID_USOPTL2_4 0xAC24 | |
caf3a636 | 132 | #define BANDB_DEVICE_ID_USOPTL4_2P 0xBC02 |
3f542974 | 133 | |
9d498bea RL |
134 | /* This driver also supports |
135 | * ATEN UC2324 device using Moschip MCS7840 | |
136 | * ATEN UC2322 device using Moschip MCS7820 | |
137 | */ | |
e9b8cffa TC |
138 | #define USB_VENDOR_ID_ATENINTL 0x0557 |
139 | #define ATENINTL_DEVICE_ID_UC2324 0x2011 | |
9d498bea | 140 | #define ATENINTL_DEVICE_ID_UC2322 0x7820 |
e9b8cffa | 141 | |
11e1abb4 | 142 | /* Interrupt Routine Defines */ |
3f542974 PS |
143 | |
144 | #define SERIAL_IIR_RLS 0x06 | |
145 | #define SERIAL_IIR_MS 0x00 | |
146 | ||
147 | /* | |
148 | * Emulation of the bit mask on the LINE STATUS REGISTER. | |
149 | */ | |
150 | #define SERIAL_LSR_DR 0x0001 | |
151 | #define SERIAL_LSR_OE 0x0002 | |
152 | #define SERIAL_LSR_PE 0x0004 | |
153 | #define SERIAL_LSR_FE 0x0008 | |
154 | #define SERIAL_LSR_BI 0x0010 | |
155 | ||
156 | #define MOS_MSR_DELTA_CTS 0x10 | |
157 | #define MOS_MSR_DELTA_DSR 0x20 | |
158 | #define MOS_MSR_DELTA_RI 0x40 | |
159 | #define MOS_MSR_DELTA_CD 0x80 | |
160 | ||
880af9db | 161 | /* Serial Port register Address */ |
3f542974 PS |
162 | #define INTERRUPT_ENABLE_REGISTER ((__u16)(0x01)) |
163 | #define FIFO_CONTROL_REGISTER ((__u16)(0x02)) | |
164 | #define LINE_CONTROL_REGISTER ((__u16)(0x03)) | |
165 | #define MODEM_CONTROL_REGISTER ((__u16)(0x04)) | |
166 | #define LINE_STATUS_REGISTER ((__u16)(0x05)) | |
167 | #define MODEM_STATUS_REGISTER ((__u16)(0x06)) | |
168 | #define SCRATCH_PAD_REGISTER ((__u16)(0x07)) | |
169 | #define DIVISOR_LATCH_LSB ((__u16)(0x00)) | |
170 | #define DIVISOR_LATCH_MSB ((__u16)(0x01)) | |
171 | ||
172 | #define CLK_MULTI_REGISTER ((__u16)(0x02)) | |
173 | #define CLK_START_VALUE_REGISTER ((__u16)(0x03)) | |
174 | ||
175 | #define SERIAL_LCR_DLAB ((__u16)(0x0080)) | |
176 | ||
177 | /* | |
178 | * URB POOL related defines | |
179 | */ | |
180 | #define NUM_URBS 16 /* URB Count */ | |
181 | #define URB_TRANSFER_BUFFER_SIZE 32 /* URB Size */ | |
182 | ||
183 | ||
7d40d7e8 | 184 | static const struct usb_device_id moschip_port_id_table[] = { |
3f542974 PS |
185 | {USB_DEVICE(USB_VENDOR_ID_MOSCHIP, MOSCHIP_DEVICE_ID_7840)}, |
186 | {USB_DEVICE(USB_VENDOR_ID_MOSCHIP, MOSCHIP_DEVICE_ID_7820)}, | |
acf509ae CB |
187 | {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USO9ML2_2)}, |
188 | {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USO9ML2_4)}, | |
189 | {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_US9ML2_2)}, | |
190 | {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_US9ML2_4)}, | |
191 | {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USPTL4_2)}, | |
192 | {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USPTL4_4)}, | |
11e1abb4 | 193 | {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USOPTL4_2)}, |
acf509ae | 194 | {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USOPTL4_4)}, |
27f1281d | 195 | {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USOPTL2_4)}, |
caf3a636 | 196 | {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USOPTL2_4P)}, |
e9b8cffa | 197 | {USB_DEVICE(USB_VENDOR_ID_ATENINTL, ATENINTL_DEVICE_ID_UC2324)}, |
9d498bea | 198 | {USB_DEVICE(USB_VENDOR_ID_ATENINTL, ATENINTL_DEVICE_ID_UC2322)}, |
3f542974 PS |
199 | {} /* terminating entry */ |
200 | }; | |
201 | ||
7d40d7e8 | 202 | static const struct usb_device_id moschip_id_table_combined[] __devinitconst = { |
3f542974 PS |
203 | {USB_DEVICE(USB_VENDOR_ID_MOSCHIP, MOSCHIP_DEVICE_ID_7840)}, |
204 | {USB_DEVICE(USB_VENDOR_ID_MOSCHIP, MOSCHIP_DEVICE_ID_7820)}, | |
acf509ae CB |
205 | {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USO9ML2_2)}, |
206 | {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USO9ML2_4)}, | |
207 | {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_US9ML2_2)}, | |
208 | {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_US9ML2_4)}, | |
209 | {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USPTL4_2)}, | |
210 | {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USPTL4_4)}, | |
11e1abb4 | 211 | {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USOPTL4_2)}, |
acf509ae | 212 | {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USOPTL4_4)}, |
27f1281d | 213 | {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USOPTL2_4)}, |
caf3a636 | 214 | {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USOPTL2_4P)}, |
e9b8cffa | 215 | {USB_DEVICE(USB_VENDOR_ID_ATENINTL, ATENINTL_DEVICE_ID_UC2324)}, |
9d498bea | 216 | {USB_DEVICE(USB_VENDOR_ID_ATENINTL, ATENINTL_DEVICE_ID_UC2322)}, |
3f542974 PS |
217 | {} /* terminating entry */ |
218 | }; | |
219 | ||
220 | MODULE_DEVICE_TABLE(usb, moschip_id_table_combined); | |
221 | ||
222 | /* This structure holds all of the local port information */ | |
223 | ||
224 | struct moschip_port { | |
225 | int port_num; /*Actual port number in the device(1,2,etc) */ | |
226 | struct urb *write_urb; /* write URB for this port */ | |
227 | struct urb *read_urb; /* read URB for this port */ | |
0de9a702 | 228 | struct urb *int_urb; |
3f542974 PS |
229 | __u8 shadowLCR; /* last LCR value received */ |
230 | __u8 shadowMCR; /* last MCR value received */ | |
231 | char open; | |
0de9a702 ON |
232 | char open_ports; |
233 | char zombie; | |
3f542974 PS |
234 | wait_queue_head_t wait_chase; /* for handling sleeping while waiting for chase to finish */ |
235 | wait_queue_head_t delta_msr_wait; /* for handling sleeping while waiting for msr change to happen */ | |
236 | int delta_msr_cond; | |
237 | struct async_icount icount; | |
238 | struct usb_serial_port *port; /* loop back to the owner of this object */ | |
239 | ||
880af9db | 240 | /* Offsets */ |
3f542974 PS |
241 | __u8 SpRegOffset; |
242 | __u8 ControlRegOffset; | |
243 | __u8 DcrRegOffset; | |
880af9db | 244 | /* for processing control URBS in interrupt context */ |
3f542974 | 245 | struct urb *control_urb; |
0de9a702 | 246 | struct usb_ctrlrequest *dr; |
3f542974 PS |
247 | char *ctrl_buf; |
248 | int MsrLsr; | |
249 | ||
0de9a702 | 250 | spinlock_t pool_lock; |
3f542974 | 251 | struct urb *write_urb_pool[NUM_URBS]; |
0de9a702 | 252 | char busy[NUM_URBS]; |
50de36f7 | 253 | bool read_urb_busy; |
3f542974 PS |
254 | }; |
255 | ||
256 | ||
257 | static int debug; | |
3f542974 PS |
258 | |
259 | /* | |
260 | * mos7840_set_reg_sync | |
261 | * To set the Control register by calling usb_fill_control_urb function | |
262 | * by passing usb_sndctrlpipe function as parameter. | |
263 | */ | |
264 | ||
265 | static int mos7840_set_reg_sync(struct usb_serial_port *port, __u16 reg, | |
266 | __u16 val) | |
267 | { | |
268 | struct usb_device *dev = port->serial->dev; | |
269 | val = val & 0x00ff; | |
84fe6e79 | 270 | dbg("mos7840_set_reg_sync offset is %x, value %x", reg, val); |
3f542974 PS |
271 | |
272 | return usb_control_msg(dev, usb_sndctrlpipe(dev, 0), MCS_WRREQ, | |
273 | MCS_WR_RTYPE, val, reg, NULL, 0, | |
274 | MOS_WDR_TIMEOUT); | |
275 | } | |
276 | ||
277 | /* | |
278 | * mos7840_get_reg_sync | |
279 | * To set the Uart register by calling usb_fill_control_urb function by | |
280 | * passing usb_rcvctrlpipe function as parameter. | |
281 | */ | |
282 | ||
283 | static int mos7840_get_reg_sync(struct usb_serial_port *port, __u16 reg, | |
880af9db | 284 | __u16 *val) |
3f542974 PS |
285 | { |
286 | struct usb_device *dev = port->serial->dev; | |
287 | int ret = 0; | |
9e221a35 JH |
288 | u8 *buf; |
289 | ||
290 | buf = kmalloc(VENDOR_READ_LENGTH, GFP_KERNEL); | |
291 | if (!buf) | |
292 | return -ENOMEM; | |
3f542974 PS |
293 | |
294 | ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), MCS_RDREQ, | |
9e221a35 | 295 | MCS_RD_RTYPE, 0, reg, buf, VENDOR_READ_LENGTH, |
3f542974 | 296 | MOS_WDR_TIMEOUT); |
9e221a35 | 297 | *val = buf[0]; |
84fe6e79 | 298 | dbg("mos7840_get_reg_sync offset is %x, return val %x", reg, *val); |
9e221a35 JH |
299 | |
300 | kfree(buf); | |
3f542974 PS |
301 | return ret; |
302 | } | |
303 | ||
304 | /* | |
305 | * mos7840_set_uart_reg | |
306 | * To set the Uart register by calling usb_fill_control_urb function by | |
307 | * passing usb_sndctrlpipe function as parameter. | |
308 | */ | |
309 | ||
310 | static int mos7840_set_uart_reg(struct usb_serial_port *port, __u16 reg, | |
311 | __u16 val) | |
312 | { | |
313 | ||
314 | struct usb_device *dev = port->serial->dev; | |
315 | val = val & 0x00ff; | |
880af9db AC |
316 | /* For the UART control registers, the application number need |
317 | to be Or'ed */ | |
0de9a702 | 318 | if (port->serial->num_ports == 4) { |
880af9db AC |
319 | val |= (((__u16) port->number - |
320 | (__u16) (port->serial->minor)) + 1) << 8; | |
84fe6e79 | 321 | dbg("mos7840_set_uart_reg application number is %x", val); |
3f542974 PS |
322 | } else { |
323 | if (((__u16) port->number - (__u16) (port->serial->minor)) == 0) { | |
880af9db | 324 | val |= (((__u16) port->number - |
3f542974 | 325 | (__u16) (port->serial->minor)) + 1) << 8; |
84fe6e79 | 326 | dbg("mos7840_set_uart_reg application number is %x", |
3f542974 PS |
327 | val); |
328 | } else { | |
329 | val |= | |
330 | (((__u16) port->number - | |
331 | (__u16) (port->serial->minor)) + 2) << 8; | |
84fe6e79 | 332 | dbg("mos7840_set_uart_reg application number is %x", |
3f542974 PS |
333 | val); |
334 | } | |
335 | } | |
336 | return usb_control_msg(dev, usb_sndctrlpipe(dev, 0), MCS_WRREQ, | |
337 | MCS_WR_RTYPE, val, reg, NULL, 0, | |
338 | MOS_WDR_TIMEOUT); | |
339 | ||
340 | } | |
341 | ||
342 | /* | |
343 | * mos7840_get_uart_reg | |
344 | * To set the Control register by calling usb_fill_control_urb function | |
345 | * by passing usb_rcvctrlpipe function as parameter. | |
346 | */ | |
347 | static int mos7840_get_uart_reg(struct usb_serial_port *port, __u16 reg, | |
880af9db | 348 | __u16 *val) |
3f542974 PS |
349 | { |
350 | struct usb_device *dev = port->serial->dev; | |
351 | int ret = 0; | |
352 | __u16 Wval; | |
9e221a35 JH |
353 | u8 *buf; |
354 | ||
355 | buf = kmalloc(VENDOR_READ_LENGTH, GFP_KERNEL); | |
356 | if (!buf) | |
357 | return -ENOMEM; | |
3f542974 | 358 | |
84fe6e79 | 359 | /* dbg("application number is %4x", |
880af9db AC |
360 | (((__u16)port->number - (__u16)(port->serial->minor))+1)<<8); */ |
361 | /* Wval is same as application number */ | |
0de9a702 | 362 | if (port->serial->num_ports == 4) { |
3f542974 PS |
363 | Wval = |
364 | (((__u16) port->number - (__u16) (port->serial->minor)) + | |
365 | 1) << 8; | |
84fe6e79 | 366 | dbg("mos7840_get_uart_reg application number is %x", Wval); |
3f542974 PS |
367 | } else { |
368 | if (((__u16) port->number - (__u16) (port->serial->minor)) == 0) { | |
880af9db | 369 | Wval = (((__u16) port->number - |
3f542974 | 370 | (__u16) (port->serial->minor)) + 1) << 8; |
84fe6e79 | 371 | dbg("mos7840_get_uart_reg application number is %x", |
3f542974 PS |
372 | Wval); |
373 | } else { | |
880af9db | 374 | Wval = (((__u16) port->number - |
3f542974 | 375 | (__u16) (port->serial->minor)) + 2) << 8; |
84fe6e79 | 376 | dbg("mos7840_get_uart_reg application number is %x", |
3f542974 PS |
377 | Wval); |
378 | } | |
379 | } | |
380 | ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), MCS_RDREQ, | |
9e221a35 | 381 | MCS_RD_RTYPE, Wval, reg, buf, VENDOR_READ_LENGTH, |
3f542974 | 382 | MOS_WDR_TIMEOUT); |
9e221a35 JH |
383 | *val = buf[0]; |
384 | ||
385 | kfree(buf); | |
3f542974 PS |
386 | return ret; |
387 | } | |
388 | ||
389 | static void mos7840_dump_serial_port(struct moschip_port *mos7840_port) | |
390 | { | |
391 | ||
84fe6e79 TC |
392 | dbg("***************************************"); |
393 | dbg("SpRegOffset is %2x", mos7840_port->SpRegOffset); | |
394 | dbg("ControlRegOffset is %2x", mos7840_port->ControlRegOffset); | |
395 | dbg("DCRRegOffset is %2x", mos7840_port->DcrRegOffset); | |
396 | dbg("***************************************"); | |
3f542974 PS |
397 | |
398 | } | |
399 | ||
400 | /************************************************************************/ | |
401 | /************************************************************************/ | |
402 | /* I N T E R F A C E F U N C T I O N S */ | |
403 | /* I N T E R F A C E F U N C T I O N S */ | |
404 | /************************************************************************/ | |
405 | /************************************************************************/ | |
406 | ||
407 | static inline void mos7840_set_port_private(struct usb_serial_port *port, | |
408 | struct moschip_port *data) | |
409 | { | |
410 | usb_set_serial_port_data(port, (void *)data); | |
411 | } | |
412 | ||
413 | static inline struct moschip_port *mos7840_get_port_private(struct | |
414 | usb_serial_port | |
415 | *port) | |
416 | { | |
417 | return (struct moschip_port *)usb_get_serial_port_data(port); | |
418 | } | |
419 | ||
0de9a702 | 420 | static void mos7840_handle_new_msr(struct moschip_port *port, __u8 new_msr) |
3f542974 PS |
421 | { |
422 | struct moschip_port *mos7840_port; | |
423 | struct async_icount *icount; | |
424 | mos7840_port = port; | |
425 | icount = &mos7840_port->icount; | |
426 | if (new_msr & | |
427 | (MOS_MSR_DELTA_CTS | MOS_MSR_DELTA_DSR | MOS_MSR_DELTA_RI | | |
428 | MOS_MSR_DELTA_CD)) { | |
429 | icount = &mos7840_port->icount; | |
430 | ||
431 | /* update input line counters */ | |
432 | if (new_msr & MOS_MSR_DELTA_CTS) { | |
433 | icount->cts++; | |
0de9a702 | 434 | smp_wmb(); |
3f542974 PS |
435 | } |
436 | if (new_msr & MOS_MSR_DELTA_DSR) { | |
437 | icount->dsr++; | |
0de9a702 | 438 | smp_wmb(); |
3f542974 PS |
439 | } |
440 | if (new_msr & MOS_MSR_DELTA_CD) { | |
441 | icount->dcd++; | |
0de9a702 | 442 | smp_wmb(); |
3f542974 PS |
443 | } |
444 | if (new_msr & MOS_MSR_DELTA_RI) { | |
445 | icount->rng++; | |
0de9a702 | 446 | smp_wmb(); |
3f542974 PS |
447 | } |
448 | } | |
3f542974 PS |
449 | } |
450 | ||
0de9a702 | 451 | static void mos7840_handle_new_lsr(struct moschip_port *port, __u8 new_lsr) |
3f542974 PS |
452 | { |
453 | struct async_icount *icount; | |
454 | ||
441b62c1 | 455 | dbg("%s - %02x", __func__, new_lsr); |
3f542974 PS |
456 | |
457 | if (new_lsr & SERIAL_LSR_BI) { | |
880af9db AC |
458 | /* |
459 | * Parity and Framing errors only count if they | |
460 | * occur exclusive of a break being | |
461 | * received. | |
462 | */ | |
3f542974 PS |
463 | new_lsr &= (__u8) (SERIAL_LSR_OE | SERIAL_LSR_BI); |
464 | } | |
465 | ||
466 | /* update input line counters */ | |
467 | icount = &port->icount; | |
468 | if (new_lsr & SERIAL_LSR_BI) { | |
469 | icount->brk++; | |
0de9a702 | 470 | smp_wmb(); |
3f542974 PS |
471 | } |
472 | if (new_lsr & SERIAL_LSR_OE) { | |
473 | icount->overrun++; | |
0de9a702 | 474 | smp_wmb(); |
3f542974 PS |
475 | } |
476 | if (new_lsr & SERIAL_LSR_PE) { | |
477 | icount->parity++; | |
0de9a702 | 478 | smp_wmb(); |
3f542974 PS |
479 | } |
480 | if (new_lsr & SERIAL_LSR_FE) { | |
481 | icount->frame++; | |
0de9a702 | 482 | smp_wmb(); |
3f542974 | 483 | } |
3f542974 PS |
484 | } |
485 | ||
486 | /************************************************************************/ | |
487 | /************************************************************************/ | |
488 | /* U S B C A L L B A C K F U N C T I O N S */ | |
489 | /* U S B C A L L B A C K F U N C T I O N S */ | |
490 | /************************************************************************/ | |
491 | /************************************************************************/ | |
492 | ||
7d12e780 | 493 | static void mos7840_control_callback(struct urb *urb) |
3f542974 PS |
494 | { |
495 | unsigned char *data; | |
496 | struct moschip_port *mos7840_port; | |
497 | __u8 regval = 0x0; | |
0de9a702 | 498 | int result = 0; |
0643c724 | 499 | int status = urb->status; |
3f542974 | 500 | |
cdc97792 | 501 | mos7840_port = urb->context; |
0de9a702 | 502 | |
0643c724 | 503 | switch (status) { |
3f542974 PS |
504 | case 0: |
505 | /* success */ | |
506 | break; | |
507 | case -ECONNRESET: | |
508 | case -ENOENT: | |
509 | case -ESHUTDOWN: | |
510 | /* this urb is terminated, clean up */ | |
441b62c1 | 511 | dbg("%s - urb shutting down with status: %d", __func__, |
0643c724 | 512 | status); |
3f542974 PS |
513 | return; |
514 | default: | |
441b62c1 | 515 | dbg("%s - nonzero urb status received: %d", __func__, |
0643c724 | 516 | status); |
3f542974 PS |
517 | goto exit; |
518 | } | |
519 | ||
84fe6e79 TC |
520 | dbg("%s urb buffer size is %d", __func__, urb->actual_length); |
521 | dbg("%s mos7840_port->MsrLsr is %d port %d", __func__, | |
3f542974 PS |
522 | mos7840_port->MsrLsr, mos7840_port->port_num); |
523 | data = urb->transfer_buffer; | |
524 | regval = (__u8) data[0]; | |
84fe6e79 | 525 | dbg("%s data is %x", __func__, regval); |
3f542974 PS |
526 | if (mos7840_port->MsrLsr == 0) |
527 | mos7840_handle_new_msr(mos7840_port, regval); | |
528 | else if (mos7840_port->MsrLsr == 1) | |
529 | mos7840_handle_new_lsr(mos7840_port, regval); | |
530 | ||
0de9a702 ON |
531 | exit: |
532 | spin_lock(&mos7840_port->pool_lock); | |
533 | if (!mos7840_port->zombie) | |
534 | result = usb_submit_urb(mos7840_port->int_urb, GFP_ATOMIC); | |
535 | spin_unlock(&mos7840_port->pool_lock); | |
536 | if (result) { | |
537 | dev_err(&urb->dev->dev, | |
538 | "%s - Error %d submitting interrupt urb\n", | |
441b62c1 | 539 | __func__, result); |
0de9a702 | 540 | } |
3f542974 PS |
541 | } |
542 | ||
543 | static int mos7840_get_reg(struct moschip_port *mcs, __u16 Wval, __u16 reg, | |
880af9db | 544 | __u16 *val) |
3f542974 PS |
545 | { |
546 | struct usb_device *dev = mcs->port->serial->dev; | |
0de9a702 ON |
547 | struct usb_ctrlrequest *dr = mcs->dr; |
548 | unsigned char *buffer = mcs->ctrl_buf; | |
549 | int ret; | |
3f542974 | 550 | |
3f542974 PS |
551 | dr->bRequestType = MCS_RD_RTYPE; |
552 | dr->bRequest = MCS_RDREQ; | |
880af9db | 553 | dr->wValue = cpu_to_le16(Wval); /* 0 */ |
3f542974 PS |
554 | dr->wIndex = cpu_to_le16(reg); |
555 | dr->wLength = cpu_to_le16(2); | |
556 | ||
557 | usb_fill_control_urb(mcs->control_urb, dev, usb_rcvctrlpipe(dev, 0), | |
558 | (unsigned char *)dr, buffer, 2, | |
559 | mos7840_control_callback, mcs); | |
560 | mcs->control_urb->transfer_buffer_length = 2; | |
561 | ret = usb_submit_urb(mcs->control_urb, GFP_ATOMIC); | |
562 | return ret; | |
563 | } | |
564 | ||
565 | /***************************************************************************** | |
566 | * mos7840_interrupt_callback | |
567 | * this is the callback function for when we have received data on the | |
568 | * interrupt endpoint. | |
569 | *****************************************************************************/ | |
570 | ||
7d12e780 | 571 | static void mos7840_interrupt_callback(struct urb *urb) |
3f542974 PS |
572 | { |
573 | int result; | |
574 | int length; | |
575 | struct moschip_port *mos7840_port; | |
576 | struct usb_serial *serial; | |
577 | __u16 Data; | |
578 | unsigned char *data; | |
579 | __u8 sp[5], st; | |
0de9a702 ON |
580 | int i, rv = 0; |
581 | __u16 wval, wreg = 0; | |
0643c724 | 582 | int status = urb->status; |
3f542974 | 583 | |
84fe6e79 | 584 | dbg("%s", " : Entering"); |
3f542974 | 585 | |
0643c724 | 586 | switch (status) { |
3f542974 PS |
587 | case 0: |
588 | /* success */ | |
589 | break; | |
590 | case -ECONNRESET: | |
591 | case -ENOENT: | |
592 | case -ESHUTDOWN: | |
593 | /* this urb is terminated, clean up */ | |
441b62c1 | 594 | dbg("%s - urb shutting down with status: %d", __func__, |
0643c724 | 595 | status); |
3f542974 PS |
596 | return; |
597 | default: | |
441b62c1 | 598 | dbg("%s - nonzero urb status received: %d", __func__, |
0643c724 | 599 | status); |
3f542974 PS |
600 | goto exit; |
601 | } | |
602 | ||
603 | length = urb->actual_length; | |
604 | data = urb->transfer_buffer; | |
605 | ||
cdc97792 | 606 | serial = urb->context; |
3f542974 PS |
607 | |
608 | /* Moschip get 5 bytes | |
609 | * Byte 1 IIR Port 1 (port.number is 0) | |
610 | * Byte 2 IIR Port 2 (port.number is 1) | |
611 | * Byte 3 IIR Port 3 (port.number is 2) | |
612 | * Byte 4 IIR Port 4 (port.number is 3) | |
613 | * Byte 5 FIFO status for both */ | |
614 | ||
615 | if (length && length > 5) { | |
84fe6e79 | 616 | dbg("%s", "Wrong data !!!"); |
3f542974 PS |
617 | return; |
618 | } | |
619 | ||
620 | sp[0] = (__u8) data[0]; | |
621 | sp[1] = (__u8) data[1]; | |
622 | sp[2] = (__u8) data[2]; | |
623 | sp[3] = (__u8) data[3]; | |
624 | st = (__u8) data[4]; | |
625 | ||
626 | for (i = 0; i < serial->num_ports; i++) { | |
627 | mos7840_port = mos7840_get_port_private(serial->port[i]); | |
628 | wval = | |
629 | (((__u16) serial->port[i]->number - | |
630 | (__u16) (serial->minor)) + 1) << 8; | |
631 | if (mos7840_port->open) { | |
632 | if (sp[i] & 0x01) { | |
84fe6e79 | 633 | dbg("SP%d No Interrupt !!!", i); |
3f542974 PS |
634 | } else { |
635 | switch (sp[i] & 0x0f) { | |
636 | case SERIAL_IIR_RLS: | |
637 | dbg("Serial Port %d: Receiver status error or ", i); | |
84fe6e79 | 638 | dbg("address bit detected in 9-bit mode"); |
3f542974 | 639 | mos7840_port->MsrLsr = 1; |
0de9a702 | 640 | wreg = LINE_STATUS_REGISTER; |
3f542974 PS |
641 | break; |
642 | case SERIAL_IIR_MS: | |
84fe6e79 | 643 | dbg("Serial Port %d: Modem status change", i); |
3f542974 | 644 | mos7840_port->MsrLsr = 0; |
0de9a702 | 645 | wreg = MODEM_STATUS_REGISTER; |
3f542974 PS |
646 | break; |
647 | } | |
0de9a702 ON |
648 | spin_lock(&mos7840_port->pool_lock); |
649 | if (!mos7840_port->zombie) { | |
650 | rv = mos7840_get_reg(mos7840_port, wval, wreg, &Data); | |
651 | } else { | |
652 | spin_unlock(&mos7840_port->pool_lock); | |
653 | return; | |
654 | } | |
655 | spin_unlock(&mos7840_port->pool_lock); | |
3f542974 PS |
656 | } |
657 | } | |
658 | } | |
880af9db AC |
659 | if (!(rv < 0)) |
660 | /* the completion handler for the control urb will resubmit */ | |
0de9a702 ON |
661 | return; |
662 | exit: | |
3f542974 PS |
663 | result = usb_submit_urb(urb, GFP_ATOMIC); |
664 | if (result) { | |
665 | dev_err(&urb->dev->dev, | |
666 | "%s - Error %d submitting interrupt urb\n", | |
441b62c1 | 667 | __func__, result); |
3f542974 | 668 | } |
3f542974 PS |
669 | } |
670 | ||
671 | static int mos7840_port_paranoia_check(struct usb_serial_port *port, | |
672 | const char *function) | |
673 | { | |
674 | if (!port) { | |
675 | dbg("%s - port == NULL", function); | |
676 | return -1; | |
677 | } | |
678 | if (!port->serial) { | |
679 | dbg("%s - port->serial == NULL", function); | |
680 | return -1; | |
681 | } | |
682 | ||
683 | return 0; | |
684 | } | |
685 | ||
686 | /* Inline functions to check the sanity of a pointer that is passed to us */ | |
687 | static int mos7840_serial_paranoia_check(struct usb_serial *serial, | |
688 | const char *function) | |
689 | { | |
690 | if (!serial) { | |
691 | dbg("%s - serial == NULL", function); | |
692 | return -1; | |
693 | } | |
694 | if (!serial->type) { | |
695 | dbg("%s - serial->type == NULL!", function); | |
696 | return -1; | |
697 | } | |
698 | ||
699 | return 0; | |
700 | } | |
701 | ||
702 | static struct usb_serial *mos7840_get_usb_serial(struct usb_serial_port *port, | |
703 | const char *function) | |
704 | { | |
705 | /* if no port was specified, or it fails a paranoia check */ | |
706 | if (!port || | |
707 | mos7840_port_paranoia_check(port, function) || | |
708 | mos7840_serial_paranoia_check(port->serial, function)) { | |
880af9db AC |
709 | /* then say that we don't have a valid usb_serial thing, |
710 | * which will end up genrating -ENODEV return values */ | |
3f542974 PS |
711 | return NULL; |
712 | } | |
713 | ||
714 | return port->serial; | |
715 | } | |
716 | ||
717 | /***************************************************************************** | |
718 | * mos7840_bulk_in_callback | |
719 | * this is the callback function for when we have received data on the | |
720 | * bulk in endpoint. | |
721 | *****************************************************************************/ | |
722 | ||
7d12e780 | 723 | static void mos7840_bulk_in_callback(struct urb *urb) |
3f542974 | 724 | { |
0643c724 | 725 | int retval; |
3f542974 PS |
726 | unsigned char *data; |
727 | struct usb_serial *serial; | |
728 | struct usb_serial_port *port; | |
729 | struct moschip_port *mos7840_port; | |
730 | struct tty_struct *tty; | |
0643c724 | 731 | int status = urb->status; |
3f542974 | 732 | |
cdc97792 | 733 | mos7840_port = urb->context; |
3f542974 | 734 | if (!mos7840_port) { |
84fe6e79 | 735 | dbg("%s", "NULL mos7840_port pointer"); |
50de36f7 GKH |
736 | return; |
737 | } | |
738 | ||
739 | if (status) { | |
740 | dbg("nonzero read bulk status received: %d", status); | |
741 | mos7840_port->read_urb_busy = false; | |
3f542974 PS |
742 | return; |
743 | } | |
744 | ||
745 | port = (struct usb_serial_port *)mos7840_port->port; | |
441b62c1 | 746 | if (mos7840_port_paranoia_check(port, __func__)) { |
84fe6e79 | 747 | dbg("%s", "Port Paranoia failed"); |
50de36f7 | 748 | mos7840_port->read_urb_busy = false; |
3f542974 PS |
749 | return; |
750 | } | |
751 | ||
441b62c1 | 752 | serial = mos7840_get_usb_serial(port, __func__); |
3f542974 | 753 | if (!serial) { |
84fe6e79 | 754 | dbg("%s", "Bad serial pointer"); |
50de36f7 | 755 | mos7840_port->read_urb_busy = false; |
3f542974 PS |
756 | return; |
757 | } | |
758 | ||
84fe6e79 | 759 | dbg("%s", "Entering... "); |
3f542974 PS |
760 | |
761 | data = urb->transfer_buffer; | |
762 | ||
84fe6e79 | 763 | dbg("%s", "Entering ..........."); |
3f542974 PS |
764 | |
765 | if (urb->actual_length) { | |
4a90f09b | 766 | tty = tty_port_tty_get(&mos7840_port->port->port); |
3f542974 | 767 | if (tty) { |
3f542974 | 768 | tty_insert_flip_string(tty, data, urb->actual_length); |
84fe6e79 | 769 | dbg(" %s ", data); |
3f542974 | 770 | tty_flip_buffer_push(tty); |
4a90f09b | 771 | tty_kref_put(tty); |
3f542974 PS |
772 | } |
773 | mos7840_port->icount.rx += urb->actual_length; | |
0de9a702 | 774 | smp_wmb(); |
84fe6e79 | 775 | dbg("mos7840_port->icount.rx is %d:", |
3f542974 PS |
776 | mos7840_port->icount.rx); |
777 | } | |
778 | ||
779 | if (!mos7840_port->read_urb) { | |
84fe6e79 | 780 | dbg("%s", "URB KILLED !!!"); |
50de36f7 | 781 | mos7840_port->read_urb_busy = false; |
3f542974 PS |
782 | return; |
783 | } | |
784 | ||
3f542974 | 785 | |
0de9a702 | 786 | mos7840_port->read_urb->dev = serial->dev; |
3f542974 | 787 | |
50de36f7 | 788 | mos7840_port->read_urb_busy = true; |
0643c724 | 789 | retval = usb_submit_urb(mos7840_port->read_urb, GFP_ATOMIC); |
0de9a702 | 790 | |
0643c724 | 791 | if (retval) { |
50de36f7 GKH |
792 | dbg("usb_submit_urb(read bulk) failed, retval = %d", retval); |
793 | mos7840_port->read_urb_busy = false; | |
3f542974 PS |
794 | } |
795 | } | |
796 | ||
797 | /***************************************************************************** | |
798 | * mos7840_bulk_out_data_callback | |
880af9db AC |
799 | * this is the callback function for when we have finished sending |
800 | * serial data on the bulk out endpoint. | |
3f542974 PS |
801 | *****************************************************************************/ |
802 | ||
7d12e780 | 803 | static void mos7840_bulk_out_data_callback(struct urb *urb) |
3f542974 PS |
804 | { |
805 | struct moschip_port *mos7840_port; | |
806 | struct tty_struct *tty; | |
0643c724 | 807 | int status = urb->status; |
0de9a702 ON |
808 | int i; |
809 | ||
cdc97792 | 810 | mos7840_port = urb->context; |
0de9a702 ON |
811 | spin_lock(&mos7840_port->pool_lock); |
812 | for (i = 0; i < NUM_URBS; i++) { | |
813 | if (urb == mos7840_port->write_urb_pool[i]) { | |
814 | mos7840_port->busy[i] = 0; | |
815 | break; | |
816 | } | |
817 | } | |
818 | spin_unlock(&mos7840_port->pool_lock); | |
819 | ||
0643c724 | 820 | if (status) { |
84fe6e79 | 821 | dbg("nonzero write bulk status received:%d", status); |
3f542974 PS |
822 | return; |
823 | } | |
824 | ||
441b62c1 | 825 | if (mos7840_port_paranoia_check(mos7840_port->port, __func__)) { |
84fe6e79 | 826 | dbg("%s", "Port Paranoia failed"); |
3f542974 PS |
827 | return; |
828 | } | |
829 | ||
84fe6e79 | 830 | dbg("%s", "Entering ........."); |
3f542974 | 831 | |
4a90f09b | 832 | tty = tty_port_tty_get(&mos7840_port->port->port); |
b963a844 JS |
833 | if (tty && mos7840_port->open) |
834 | tty_wakeup(tty); | |
4a90f09b | 835 | tty_kref_put(tty); |
3f542974 PS |
836 | |
837 | } | |
838 | ||
839 | /************************************************************************/ | |
840 | /* 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 */ | |
841 | /************************************************************************/ | |
842 | #ifdef MCSSerialProbe | |
843 | static int mos7840_serial_probe(struct usb_serial *serial, | |
844 | const struct usb_device_id *id) | |
845 | { | |
846 | ||
847 | /*need to implement the mode_reg reading and updating\ | |
848 | structures usb_serial_ device_type\ | |
849 | (i.e num_ports, num_bulkin,bulkout etc) */ | |
850 | /* Also we can update the changes attach */ | |
851 | return 1; | |
852 | } | |
853 | #endif | |
854 | ||
855 | /***************************************************************************** | |
856 | * mos7840_open | |
857 | * this function is called by the tty driver when a port is opened | |
858 | * If successful, we return 0 | |
859 | * Otherwise we return a negative error number. | |
860 | *****************************************************************************/ | |
861 | ||
a509a7e4 | 862 | static int mos7840_open(struct tty_struct *tty, struct usb_serial_port *port) |
3f542974 PS |
863 | { |
864 | int response; | |
865 | int j; | |
866 | struct usb_serial *serial; | |
867 | struct urb *urb; | |
868 | __u16 Data; | |
869 | int status; | |
870 | struct moschip_port *mos7840_port; | |
0de9a702 | 871 | struct moschip_port *port0; |
3f542974 | 872 | |
84fe6e79 TC |
873 | dbg ("%s enter", __func__); |
874 | ||
441b62c1 | 875 | if (mos7840_port_paranoia_check(port, __func__)) { |
84fe6e79 | 876 | dbg("%s", "Port Paranoia failed"); |
3f542974 PS |
877 | return -ENODEV; |
878 | } | |
879 | ||
3f542974 PS |
880 | serial = port->serial; |
881 | ||
441b62c1 | 882 | if (mos7840_serial_paranoia_check(serial, __func__)) { |
84fe6e79 | 883 | dbg("%s", "Serial Paranoia failed"); |
3f542974 PS |
884 | return -ENODEV; |
885 | } | |
886 | ||
887 | mos7840_port = mos7840_get_port_private(port); | |
0de9a702 | 888 | port0 = mos7840_get_port_private(serial->port[0]); |
3f542974 | 889 | |
0de9a702 | 890 | if (mos7840_port == NULL || port0 == NULL) |
3f542974 PS |
891 | return -ENODEV; |
892 | ||
893 | usb_clear_halt(serial->dev, port->write_urb->pipe); | |
894 | usb_clear_halt(serial->dev, port->read_urb->pipe); | |
0de9a702 | 895 | port0->open_ports++; |
3f542974 PS |
896 | |
897 | /* Initialising the write urb pool */ | |
898 | for (j = 0; j < NUM_URBS; ++j) { | |
0de9a702 | 899 | urb = usb_alloc_urb(0, GFP_KERNEL); |
3f542974 PS |
900 | mos7840_port->write_urb_pool[j] = urb; |
901 | ||
902 | if (urb == NULL) { | |
194343d9 | 903 | dev_err(&port->dev, "No more urbs???\n"); |
3f542974 PS |
904 | continue; |
905 | } | |
906 | ||
880af9db AC |
907 | urb->transfer_buffer = kmalloc(URB_TRANSFER_BUFFER_SIZE, |
908 | GFP_KERNEL); | |
3f542974 | 909 | if (!urb->transfer_buffer) { |
0de9a702 ON |
910 | usb_free_urb(urb); |
911 | mos7840_port->write_urb_pool[j] = NULL; | |
194343d9 GKH |
912 | dev_err(&port->dev, |
913 | "%s-out of memory for urb buffers.\n", | |
914 | __func__); | |
3f542974 PS |
915 | continue; |
916 | } | |
917 | } | |
918 | ||
919 | /***************************************************************************** | |
920 | * Initialize MCS7840 -- Write Init values to corresponding Registers | |
921 | * | |
922 | * Register Index | |
923 | * 1 : IER | |
924 | * 2 : FCR | |
925 | * 3 : LCR | |
926 | * 4 : MCR | |
927 | * | |
928 | * 0x08 : SP1/2 Control Reg | |
929 | *****************************************************************************/ | |
930 | ||
880af9db | 931 | /* NEED to check the following Block */ |
3f542974 | 932 | |
3f542974 PS |
933 | Data = 0x0; |
934 | status = mos7840_get_reg_sync(port, mos7840_port->SpRegOffset, &Data); | |
935 | if (status < 0) { | |
84fe6e79 | 936 | dbg("Reading Spreg failed"); |
3f542974 PS |
937 | return -1; |
938 | } | |
939 | Data |= 0x80; | |
940 | status = mos7840_set_reg_sync(port, mos7840_port->SpRegOffset, Data); | |
941 | if (status < 0) { | |
84fe6e79 | 942 | dbg("writing Spreg failed"); |
3f542974 PS |
943 | return -1; |
944 | } | |
945 | ||
946 | Data &= ~0x80; | |
947 | status = mos7840_set_reg_sync(port, mos7840_port->SpRegOffset, Data); | |
948 | if (status < 0) { | |
84fe6e79 | 949 | dbg("writing Spreg failed"); |
3f542974 PS |
950 | return -1; |
951 | } | |
880af9db | 952 | /* End of block to be checked */ |
3f542974 | 953 | |
3f542974 | 954 | Data = 0x0; |
880af9db AC |
955 | status = mos7840_get_reg_sync(port, mos7840_port->ControlRegOffset, |
956 | &Data); | |
3f542974 | 957 | if (status < 0) { |
84fe6e79 | 958 | dbg("Reading Controlreg failed"); |
3f542974 PS |
959 | return -1; |
960 | } | |
880af9db AC |
961 | Data |= 0x08; /* Driver done bit */ |
962 | Data |= 0x20; /* rx_disable */ | |
963 | status = mos7840_set_reg_sync(port, | |
964 | mos7840_port->ControlRegOffset, Data); | |
3f542974 | 965 | if (status < 0) { |
84fe6e79 | 966 | dbg("writing Controlreg failed"); |
3f542974 PS |
967 | return -1; |
968 | } | |
880af9db AC |
969 | /* do register settings here */ |
970 | /* Set all regs to the device default values. */ | |
971 | /*********************************** | |
972 | * First Disable all interrupts. | |
973 | ***********************************/ | |
3f542974 | 974 | Data = 0x00; |
3f542974 PS |
975 | status = mos7840_set_uart_reg(port, INTERRUPT_ENABLE_REGISTER, Data); |
976 | if (status < 0) { | |
84fe6e79 | 977 | dbg("disabling interrupts failed"); |
3f542974 PS |
978 | return -1; |
979 | } | |
880af9db | 980 | /* Set FIFO_CONTROL_REGISTER to the default value */ |
3f542974 | 981 | Data = 0x00; |
3f542974 PS |
982 | status = mos7840_set_uart_reg(port, FIFO_CONTROL_REGISTER, Data); |
983 | if (status < 0) { | |
84fe6e79 | 984 | dbg("Writing FIFO_CONTROL_REGISTER failed"); |
3f542974 PS |
985 | return -1; |
986 | } | |
987 | ||
988 | Data = 0xcf; | |
3f542974 PS |
989 | status = mos7840_set_uart_reg(port, FIFO_CONTROL_REGISTER, Data); |
990 | if (status < 0) { | |
84fe6e79 | 991 | dbg("Writing FIFO_CONTROL_REGISTER failed"); |
3f542974 PS |
992 | return -1; |
993 | } | |
994 | ||
995 | Data = 0x03; | |
3f542974 PS |
996 | status = mos7840_set_uart_reg(port, LINE_CONTROL_REGISTER, Data); |
997 | mos7840_port->shadowLCR = Data; | |
998 | ||
999 | Data = 0x0b; | |
3f542974 PS |
1000 | status = mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, Data); |
1001 | mos7840_port->shadowMCR = Data; | |
1002 | ||
1003 | Data = 0x00; | |
3f542974 PS |
1004 | status = mos7840_get_uart_reg(port, LINE_CONTROL_REGISTER, &Data); |
1005 | mos7840_port->shadowLCR = Data; | |
1006 | ||
880af9db | 1007 | Data |= SERIAL_LCR_DLAB; /* data latch enable in LCR 0x80 */ |
3f542974 PS |
1008 | status = mos7840_set_uart_reg(port, LINE_CONTROL_REGISTER, Data); |
1009 | ||
1010 | Data = 0x0c; | |
3f542974 PS |
1011 | status = mos7840_set_uart_reg(port, DIVISOR_LATCH_LSB, Data); |
1012 | ||
1013 | Data = 0x0; | |
3f542974 PS |
1014 | status = mos7840_set_uart_reg(port, DIVISOR_LATCH_MSB, Data); |
1015 | ||
1016 | Data = 0x00; | |
3f542974 PS |
1017 | status = mos7840_get_uart_reg(port, LINE_CONTROL_REGISTER, &Data); |
1018 | ||
1019 | Data = Data & ~SERIAL_LCR_DLAB; | |
3f542974 PS |
1020 | status = mos7840_set_uart_reg(port, LINE_CONTROL_REGISTER, Data); |
1021 | mos7840_port->shadowLCR = Data; | |
1022 | ||
880af9db | 1023 | /* clearing Bulkin and Bulkout Fifo */ |
3f542974 | 1024 | Data = 0x0; |
3f542974 PS |
1025 | status = mos7840_get_reg_sync(port, mos7840_port->SpRegOffset, &Data); |
1026 | ||
1027 | Data = Data | 0x0c; | |
3f542974 PS |
1028 | status = mos7840_set_reg_sync(port, mos7840_port->SpRegOffset, Data); |
1029 | ||
1030 | Data = Data & ~0x0c; | |
3f542974 | 1031 | status = mos7840_set_reg_sync(port, mos7840_port->SpRegOffset, Data); |
880af9db | 1032 | /* Finally enable all interrupts */ |
3f542974 | 1033 | Data = 0x0c; |
3f542974 PS |
1034 | status = mos7840_set_uart_reg(port, INTERRUPT_ENABLE_REGISTER, Data); |
1035 | ||
880af9db | 1036 | /* clearing rx_disable */ |
3f542974 | 1037 | Data = 0x0; |
880af9db AC |
1038 | status = mos7840_get_reg_sync(port, mos7840_port->ControlRegOffset, |
1039 | &Data); | |
3f542974 | 1040 | Data = Data & ~0x20; |
880af9db AC |
1041 | status = mos7840_set_reg_sync(port, mos7840_port->ControlRegOffset, |
1042 | Data); | |
3f542974 | 1043 | |
880af9db | 1044 | /* rx_negate */ |
3f542974 | 1045 | Data = 0x0; |
880af9db AC |
1046 | status = mos7840_get_reg_sync(port, mos7840_port->ControlRegOffset, |
1047 | &Data); | |
3f542974 | 1048 | Data = Data | 0x10; |
880af9db AC |
1049 | status = mos7840_set_reg_sync(port, mos7840_port->ControlRegOffset, |
1050 | Data); | |
3f542974 | 1051 | |
880af9db AC |
1052 | /* Check to see if we've set up our endpoint info yet * |
1053 | * (can't set it up in mos7840_startup as the structures * | |
1054 | * were not set up at that time.) */ | |
0de9a702 | 1055 | if (port0->open_ports == 1) { |
3f542974 | 1056 | if (serial->port[0]->interrupt_in_buffer == NULL) { |
3f542974 | 1057 | /* set up interrupt urb */ |
3f542974 | 1058 | usb_fill_int_urb(serial->port[0]->interrupt_in_urb, |
880af9db AC |
1059 | serial->dev, |
1060 | usb_rcvintpipe(serial->dev, | |
1061 | serial->port[0]->interrupt_in_endpointAddress), | |
1062 | serial->port[0]->interrupt_in_buffer, | |
1063 | serial->port[0]->interrupt_in_urb-> | |
1064 | transfer_buffer_length, | |
1065 | mos7840_interrupt_callback, | |
1066 | serial, | |
1067 | serial->port[0]->interrupt_in_urb->interval); | |
3f542974 PS |
1068 | |
1069 | /* start interrupt read for mos7840 * | |
1070 | * will continue as long as mos7840 is connected */ | |
1071 | ||
1072 | response = | |
1073 | usb_submit_urb(serial->port[0]->interrupt_in_urb, | |
1074 | GFP_KERNEL); | |
1075 | if (response) { | |
194343d9 GKH |
1076 | dev_err(&port->dev, "%s - Error %d submitting " |
1077 | "interrupt urb\n", __func__, response); | |
3f542974 PS |
1078 | } |
1079 | ||
1080 | } | |
1081 | ||
1082 | } | |
1083 | ||
1084 | /* see if we've set up our endpoint info yet * | |
1085 | * (can't set it up in mos7840_startup as the * | |
1086 | * structures were not set up at that time.) */ | |
1087 | ||
84fe6e79 TC |
1088 | dbg("port number is %d", port->number); |
1089 | dbg("serial number is %d", port->serial->minor); | |
1090 | dbg("Bulkin endpoint is %d", port->bulk_in_endpointAddress); | |
1091 | dbg("BulkOut endpoint is %d", port->bulk_out_endpointAddress); | |
1092 | dbg("Interrupt endpoint is %d", port->interrupt_in_endpointAddress); | |
1093 | dbg("port's number in the device is %d", mos7840_port->port_num); | |
3f542974 PS |
1094 | mos7840_port->read_urb = port->read_urb; |
1095 | ||
1096 | /* set up our bulk in urb */ | |
1097 | ||
1098 | usb_fill_bulk_urb(mos7840_port->read_urb, | |
1099 | serial->dev, | |
1100 | usb_rcvbulkpipe(serial->dev, | |
1101 | port->bulk_in_endpointAddress), | |
1102 | port->bulk_in_buffer, | |
1103 | mos7840_port->read_urb->transfer_buffer_length, | |
1104 | mos7840_bulk_in_callback, mos7840_port); | |
1105 | ||
84fe6e79 | 1106 | dbg("mos7840_open: bulkin endpoint is %d", |
3f542974 | 1107 | port->bulk_in_endpointAddress); |
50de36f7 | 1108 | mos7840_port->read_urb_busy = true; |
3f542974 PS |
1109 | response = usb_submit_urb(mos7840_port->read_urb, GFP_KERNEL); |
1110 | if (response) { | |
194343d9 GKH |
1111 | dev_err(&port->dev, "%s - Error %d submitting control urb\n", |
1112 | __func__, response); | |
50de36f7 | 1113 | mos7840_port->read_urb_busy = false; |
3f542974 PS |
1114 | } |
1115 | ||
1116 | /* initialize our wait queues */ | |
1117 | init_waitqueue_head(&mos7840_port->wait_chase); | |
1118 | init_waitqueue_head(&mos7840_port->delta_msr_wait); | |
1119 | ||
1120 | /* initialize our icount structure */ | |
1121 | memset(&(mos7840_port->icount), 0x00, sizeof(mos7840_port->icount)); | |
1122 | ||
1123 | /* initialize our port settings */ | |
880af9db AC |
1124 | /* Must set to enable ints! */ |
1125 | mos7840_port->shadowMCR = MCR_MASTER_IE; | |
3f542974 PS |
1126 | /* send a open port command */ |
1127 | mos7840_port->open = 1; | |
880af9db | 1128 | /* mos7840_change_port_settings(mos7840_port,old_termios); */ |
3f542974 PS |
1129 | mos7840_port->icount.tx = 0; |
1130 | mos7840_port->icount.rx = 0; | |
1131 | ||
84fe6e79 | 1132 | dbg("usb_serial serial:%p mos7840_port:%p\n usb_serial_port port:%p", |
880af9db | 1133 | serial, mos7840_port, port); |
3f542974 | 1134 | |
84fe6e79 TC |
1135 | dbg ("%s leave", __func__); |
1136 | ||
3f542974 PS |
1137 | return 0; |
1138 | ||
1139 | } | |
1140 | ||
1141 | /***************************************************************************** | |
1142 | * mos7840_chars_in_buffer | |
1143 | * this function is called by the tty driver when it wants to know how many | |
1144 | * bytes of data we currently have outstanding in the port (data that has | |
1145 | * been written, but hasn't made it out the port yet) | |
1146 | * If successful, we return the number of bytes left to be written in the | |
1147 | * system, | |
95da310e | 1148 | * Otherwise we return zero. |
3f542974 PS |
1149 | *****************************************************************************/ |
1150 | ||
95da310e | 1151 | static int mos7840_chars_in_buffer(struct tty_struct *tty) |
3f542974 | 1152 | { |
95da310e | 1153 | struct usb_serial_port *port = tty->driver_data; |
3f542974 PS |
1154 | int i; |
1155 | int chars = 0; | |
0de9a702 | 1156 | unsigned long flags; |
3f542974 PS |
1157 | struct moschip_port *mos7840_port; |
1158 | ||
84fe6e79 | 1159 | dbg("%s", " mos7840_chars_in_buffer:entering ..........."); |
3f542974 | 1160 | |
441b62c1 | 1161 | if (mos7840_port_paranoia_check(port, __func__)) { |
84fe6e79 | 1162 | dbg("%s", "Invalid port"); |
95da310e | 1163 | return 0; |
3f542974 PS |
1164 | } |
1165 | ||
1166 | mos7840_port = mos7840_get_port_private(port); | |
1167 | if (mos7840_port == NULL) { | |
84fe6e79 | 1168 | dbg("%s", "mos7840_break:leaving ..........."); |
95da310e | 1169 | return 0; |
3f542974 PS |
1170 | } |
1171 | ||
880af9db | 1172 | spin_lock_irqsave(&mos7840_port->pool_lock, flags); |
95da310e AC |
1173 | for (i = 0; i < NUM_URBS; ++i) |
1174 | if (mos7840_port->busy[i]) | |
3f542974 | 1175 | chars += URB_TRANSFER_BUFFER_SIZE; |
880af9db | 1176 | spin_unlock_irqrestore(&mos7840_port->pool_lock, flags); |
441b62c1 | 1177 | dbg("%s - returns %d", __func__, chars); |
0de9a702 | 1178 | return chars; |
3f542974 PS |
1179 | |
1180 | } | |
1181 | ||
3f542974 PS |
1182 | /***************************************************************************** |
1183 | * mos7840_close | |
1184 | * this function is called by the tty driver when a port is closed | |
1185 | *****************************************************************************/ | |
1186 | ||
335f8514 | 1187 | static void mos7840_close(struct usb_serial_port *port) |
3f542974 PS |
1188 | { |
1189 | struct usb_serial *serial; | |
1190 | struct moschip_port *mos7840_port; | |
0de9a702 | 1191 | struct moschip_port *port0; |
3f542974 PS |
1192 | int j; |
1193 | __u16 Data; | |
1194 | ||
84fe6e79 | 1195 | dbg("%s", "mos7840_close:entering..."); |
3f542974 | 1196 | |
441b62c1 | 1197 | if (mos7840_port_paranoia_check(port, __func__)) { |
84fe6e79 | 1198 | dbg("%s", "Port Paranoia failed"); |
3f542974 PS |
1199 | return; |
1200 | } | |
1201 | ||
441b62c1 | 1202 | serial = mos7840_get_usb_serial(port, __func__); |
3f542974 | 1203 | if (!serial) { |
84fe6e79 | 1204 | dbg("%s", "Serial Paranoia failed"); |
3f542974 PS |
1205 | return; |
1206 | } | |
1207 | ||
1208 | mos7840_port = mos7840_get_port_private(port); | |
0de9a702 | 1209 | port0 = mos7840_get_port_private(serial->port[0]); |
3f542974 | 1210 | |
0de9a702 | 1211 | if (mos7840_port == NULL || port0 == NULL) |
3f542974 | 1212 | return; |
3f542974 PS |
1213 | |
1214 | for (j = 0; j < NUM_URBS; ++j) | |
1215 | usb_kill_urb(mos7840_port->write_urb_pool[j]); | |
1216 | ||
1217 | /* Freeing Write URBs */ | |
1218 | for (j = 0; j < NUM_URBS; ++j) { | |
1219 | if (mos7840_port->write_urb_pool[j]) { | |
1220 | if (mos7840_port->write_urb_pool[j]->transfer_buffer) | |
1221 | kfree(mos7840_port->write_urb_pool[j]-> | |
1222 | transfer_buffer); | |
1223 | ||
1224 | usb_free_urb(mos7840_port->write_urb_pool[j]); | |
1225 | } | |
1226 | } | |
1227 | ||
3f542974 PS |
1228 | /* While closing port, shutdown all bulk read, write * |
1229 | * and interrupt read if they exists */ | |
1230 | if (serial->dev) { | |
3f542974 | 1231 | if (mos7840_port->write_urb) { |
84fe6e79 | 1232 | dbg("%s", "Shutdown bulk write"); |
3f542974 PS |
1233 | usb_kill_urb(mos7840_port->write_urb); |
1234 | } | |
3f542974 | 1235 | if (mos7840_port->read_urb) { |
84fe6e79 | 1236 | dbg("%s", "Shutdown bulk read"); |
3f542974 | 1237 | usb_kill_urb(mos7840_port->read_urb); |
50de36f7 | 1238 | mos7840_port->read_urb_busy = false; |
3f542974 PS |
1239 | } |
1240 | if ((&mos7840_port->control_urb)) { | |
84fe6e79 | 1241 | dbg("%s", "Shutdown control read"); |
880af9db | 1242 | /*/ usb_kill_urb (mos7840_port->control_urb); */ |
3f542974 PS |
1243 | } |
1244 | } | |
880af9db AC |
1245 | /* if(mos7840_port->ctrl_buf != NULL) */ |
1246 | /* kfree(mos7840_port->ctrl_buf); */ | |
0de9a702 | 1247 | port0->open_ports--; |
84fe6e79 | 1248 | dbg("mos7840_num_open_ports in close%d:in port%d", |
0de9a702 ON |
1249 | port0->open_ports, port->number); |
1250 | if (port0->open_ports == 0) { | |
3f542974 | 1251 | if (serial->port[0]->interrupt_in_urb) { |
84fe6e79 | 1252 | dbg("%s", "Shutdown interrupt_in_urb"); |
0de9a702 | 1253 | usb_kill_urb(serial->port[0]->interrupt_in_urb); |
3f542974 PS |
1254 | } |
1255 | } | |
1256 | ||
1257 | if (mos7840_port->write_urb) { | |
1258 | /* if this urb had a transfer buffer already (old tx) free it */ | |
880af9db | 1259 | if (mos7840_port->write_urb->transfer_buffer != NULL) |
3f542974 | 1260 | kfree(mos7840_port->write_urb->transfer_buffer); |
3f542974 PS |
1261 | usb_free_urb(mos7840_port->write_urb); |
1262 | } | |
1263 | ||
1264 | Data = 0x0; | |
1265 | mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, Data); | |
1266 | ||
1267 | Data = 0x00; | |
1268 | mos7840_set_uart_reg(port, INTERRUPT_ENABLE_REGISTER, Data); | |
1269 | ||
1270 | mos7840_port->open = 0; | |
1271 | ||
84fe6e79 | 1272 | dbg("%s", "Leaving ............"); |
3f542974 PS |
1273 | } |
1274 | ||
1275 | /************************************************************************ | |
1276 | * | |
1277 | * mos7840_block_until_chase_response | |
1278 | * | |
1279 | * This function will block the close until one of the following: | |
1280 | * 1. Response to our Chase comes from mos7840 | |
dc0d5c1e | 1281 | * 2. A timeout of 10 seconds without activity has expired |
3f542974 PS |
1282 | * (1K of mos7840 data @ 2400 baud ==> 4 sec to empty) |
1283 | * | |
1284 | ************************************************************************/ | |
1285 | ||
95da310e AC |
1286 | static void mos7840_block_until_chase_response(struct tty_struct *tty, |
1287 | struct moschip_port *mos7840_port) | |
3f542974 PS |
1288 | { |
1289 | int timeout = 1 * HZ; | |
1290 | int wait = 10; | |
1291 | int count; | |
1292 | ||
1293 | while (1) { | |
95da310e | 1294 | count = mos7840_chars_in_buffer(tty); |
3f542974 PS |
1295 | |
1296 | /* Check for Buffer status */ | |
880af9db | 1297 | if (count <= 0) |
3f542974 | 1298 | return; |
3f542974 PS |
1299 | |
1300 | /* Block the thread for a while */ | |
1301 | interruptible_sleep_on_timeout(&mos7840_port->wait_chase, | |
1302 | timeout); | |
1303 | /* No activity.. count down section */ | |
1304 | wait--; | |
1305 | if (wait == 0) { | |
441b62c1 | 1306 | dbg("%s - TIMEOUT", __func__); |
3f542974 PS |
1307 | return; |
1308 | } else { | |
dc0d5c1e | 1309 | /* Reset timeout value back to seconds */ |
3f542974 PS |
1310 | wait = 10; |
1311 | } | |
1312 | } | |
1313 | ||
1314 | } | |
1315 | ||
1316 | /***************************************************************************** | |
1317 | * mos7840_break | |
1318 | * this function sends a break to the port | |
1319 | *****************************************************************************/ | |
95da310e | 1320 | static void mos7840_break(struct tty_struct *tty, int break_state) |
3f542974 | 1321 | { |
95da310e | 1322 | struct usb_serial_port *port = tty->driver_data; |
3f542974 PS |
1323 | unsigned char data; |
1324 | struct usb_serial *serial; | |
1325 | struct moschip_port *mos7840_port; | |
1326 | ||
84fe6e79 TC |
1327 | dbg("%s", "Entering ..........."); |
1328 | dbg("mos7840_break: Start"); | |
3f542974 | 1329 | |
441b62c1 | 1330 | if (mos7840_port_paranoia_check(port, __func__)) { |
84fe6e79 | 1331 | dbg("%s", "Port Paranoia failed"); |
3f542974 PS |
1332 | return; |
1333 | } | |
1334 | ||
441b62c1 | 1335 | serial = mos7840_get_usb_serial(port, __func__); |
3f542974 | 1336 | if (!serial) { |
84fe6e79 | 1337 | dbg("%s", "Serial Paranoia failed"); |
3f542974 PS |
1338 | return; |
1339 | } | |
1340 | ||
1341 | mos7840_port = mos7840_get_port_private(port); | |
1342 | ||
880af9db | 1343 | if (mos7840_port == NULL) |
3f542974 | 1344 | return; |
3f542974 | 1345 | |
95da310e | 1346 | if (serial->dev) |
3f542974 | 1347 | /* flush and block until tx is empty */ |
95da310e | 1348 | mos7840_block_until_chase_response(tty, mos7840_port); |
3f542974 | 1349 | |
95da310e | 1350 | if (break_state == -1) |
3f542974 | 1351 | data = mos7840_port->shadowLCR | LCR_SET_BREAK; |
95da310e | 1352 | else |
3f542974 | 1353 | data = mos7840_port->shadowLCR & ~LCR_SET_BREAK; |
3f542974 | 1354 | |
6b447f04 | 1355 | /* FIXME: no locking on shadowLCR anywhere in driver */ |
3f542974 | 1356 | mos7840_port->shadowLCR = data; |
84fe6e79 | 1357 | dbg("mcs7840_break mos7840_port->shadowLCR is %x", |
3f542974 PS |
1358 | mos7840_port->shadowLCR); |
1359 | mos7840_set_uart_reg(port, LINE_CONTROL_REGISTER, | |
1360 | mos7840_port->shadowLCR); | |
1361 | ||
1362 | return; | |
1363 | } | |
1364 | ||
1365 | /***************************************************************************** | |
1366 | * mos7840_write_room | |
1367 | * this function is called by the tty driver when it wants to know how many | |
1368 | * bytes of data we can accept for a specific port. | |
1369 | * If successful, we return the amount of room that we have for this port | |
1370 | * Otherwise we return a negative error number. | |
1371 | *****************************************************************************/ | |
1372 | ||
95da310e | 1373 | static int mos7840_write_room(struct tty_struct *tty) |
3f542974 | 1374 | { |
95da310e | 1375 | struct usb_serial_port *port = tty->driver_data; |
3f542974 PS |
1376 | int i; |
1377 | int room = 0; | |
0de9a702 | 1378 | unsigned long flags; |
3f542974 PS |
1379 | struct moschip_port *mos7840_port; |
1380 | ||
84fe6e79 | 1381 | dbg("%s", " mos7840_write_room:entering ..........."); |
3f542974 | 1382 | |
441b62c1 | 1383 | if (mos7840_port_paranoia_check(port, __func__)) { |
84fe6e79 TC |
1384 | dbg("%s", "Invalid port"); |
1385 | dbg("%s", " mos7840_write_room:leaving ..........."); | |
3f542974 PS |
1386 | return -1; |
1387 | } | |
1388 | ||
1389 | mos7840_port = mos7840_get_port_private(port); | |
1390 | if (mos7840_port == NULL) { | |
84fe6e79 | 1391 | dbg("%s", "mos7840_break:leaving ..........."); |
3f542974 PS |
1392 | return -1; |
1393 | } | |
1394 | ||
0de9a702 | 1395 | spin_lock_irqsave(&mos7840_port->pool_lock, flags); |
3f542974 | 1396 | for (i = 0; i < NUM_URBS; ++i) { |
880af9db | 1397 | if (!mos7840_port->busy[i]) |
3f542974 | 1398 | room += URB_TRANSFER_BUFFER_SIZE; |
3f542974 | 1399 | } |
0de9a702 | 1400 | spin_unlock_irqrestore(&mos7840_port->pool_lock, flags); |
3f542974 | 1401 | |
0de9a702 | 1402 | room = (room == 0) ? 0 : room - URB_TRANSFER_BUFFER_SIZE + 1; |
441b62c1 | 1403 | dbg("%s - returns %d", __func__, room); |
0de9a702 | 1404 | return room; |
3f542974 PS |
1405 | |
1406 | } | |
1407 | ||
1408 | /***************************************************************************** | |
1409 | * mos7840_write | |
1410 | * this function is called by the tty driver when data should be written to | |
1411 | * the port. | |
1412 | * If successful, we return the number of bytes written, otherwise we | |
1413 | * return a negative error number. | |
1414 | *****************************************************************************/ | |
1415 | ||
95da310e | 1416 | static int mos7840_write(struct tty_struct *tty, struct usb_serial_port *port, |
3f542974 PS |
1417 | const unsigned char *data, int count) |
1418 | { | |
1419 | int status; | |
1420 | int i; | |
1421 | int bytes_sent = 0; | |
1422 | int transfer_size; | |
0de9a702 | 1423 | unsigned long flags; |
3f542974 PS |
1424 | |
1425 | struct moschip_port *mos7840_port; | |
1426 | struct usb_serial *serial; | |
1427 | struct urb *urb; | |
880af9db | 1428 | /* __u16 Data; */ |
3f542974 PS |
1429 | const unsigned char *current_position = data; |
1430 | unsigned char *data1; | |
84fe6e79 TC |
1431 | dbg("%s", "entering ..........."); |
1432 | /* dbg("mos7840_write: mos7840_port->shadowLCR is %x", | |
880af9db | 1433 | mos7840_port->shadowLCR); */ |
3f542974 PS |
1434 | |
1435 | #ifdef NOTMOS7840 | |
1436 | Data = 0x00; | |
3f542974 PS |
1437 | status = mos7840_get_uart_reg(port, LINE_CONTROL_REGISTER, &Data); |
1438 | mos7840_port->shadowLCR = Data; | |
84fe6e79 TC |
1439 | dbg("mos7840_write: LINE_CONTROL_REGISTER is %x", Data); |
1440 | dbg("mos7840_write: mos7840_port->shadowLCR is %x", | |
3f542974 PS |
1441 | mos7840_port->shadowLCR); |
1442 | ||
880af9db AC |
1443 | /* Data = 0x03; */ |
1444 | /* status = mos7840_set_uart_reg(port,LINE_CONTROL_REGISTER,Data); */ | |
1445 | /* mos7840_port->shadowLCR=Data;//Need to add later */ | |
3f542974 | 1446 | |
880af9db | 1447 | Data |= SERIAL_LCR_DLAB; /* data latch enable in LCR 0x80 */ |
3f542974 PS |
1448 | status = mos7840_set_uart_reg(port, LINE_CONTROL_REGISTER, Data); |
1449 | ||
880af9db AC |
1450 | /* Data = 0x0c; */ |
1451 | /* status = mos7840_set_uart_reg(port,DIVISOR_LATCH_LSB,Data); */ | |
3f542974 | 1452 | Data = 0x00; |
3f542974 | 1453 | status = mos7840_get_uart_reg(port, DIVISOR_LATCH_LSB, &Data); |
84fe6e79 | 1454 | dbg("mos7840_write:DLL value is %x", Data); |
3f542974 PS |
1455 | |
1456 | Data = 0x0; | |
3f542974 | 1457 | status = mos7840_get_uart_reg(port, DIVISOR_LATCH_MSB, &Data); |
84fe6e79 | 1458 | dbg("mos7840_write:DLM value is %x", Data); |
3f542974 PS |
1459 | |
1460 | Data = Data & ~SERIAL_LCR_DLAB; | |
84fe6e79 | 1461 | dbg("mos7840_write: mos7840_port->shadowLCR is %x", |
3f542974 | 1462 | mos7840_port->shadowLCR); |
3f542974 PS |
1463 | status = mos7840_set_uart_reg(port, LINE_CONTROL_REGISTER, Data); |
1464 | #endif | |
1465 | ||
441b62c1 | 1466 | if (mos7840_port_paranoia_check(port, __func__)) { |
84fe6e79 | 1467 | dbg("%s", "Port Paranoia failed"); |
3f542974 PS |
1468 | return -1; |
1469 | } | |
1470 | ||
1471 | serial = port->serial; | |
441b62c1 | 1472 | if (mos7840_serial_paranoia_check(serial, __func__)) { |
84fe6e79 | 1473 | dbg("%s", "Serial Paranoia failed"); |
3f542974 PS |
1474 | return -1; |
1475 | } | |
1476 | ||
1477 | mos7840_port = mos7840_get_port_private(port); | |
1478 | if (mos7840_port == NULL) { | |
84fe6e79 | 1479 | dbg("%s", "mos7840_port is NULL"); |
3f542974 PS |
1480 | return -1; |
1481 | } | |
1482 | ||
1483 | /* try to find a free urb in the list */ | |
1484 | urb = NULL; | |
1485 | ||
0de9a702 | 1486 | spin_lock_irqsave(&mos7840_port->pool_lock, flags); |
3f542974 | 1487 | for (i = 0; i < NUM_URBS; ++i) { |
0de9a702 ON |
1488 | if (!mos7840_port->busy[i]) { |
1489 | mos7840_port->busy[i] = 1; | |
3f542974 | 1490 | urb = mos7840_port->write_urb_pool[i]; |
84fe6e79 | 1491 | dbg("URB:%d", i); |
3f542974 PS |
1492 | break; |
1493 | } | |
1494 | } | |
0de9a702 | 1495 | spin_unlock_irqrestore(&mos7840_port->pool_lock, flags); |
3f542974 PS |
1496 | |
1497 | if (urb == NULL) { | |
441b62c1 | 1498 | dbg("%s - no more free urbs", __func__); |
3f542974 PS |
1499 | goto exit; |
1500 | } | |
1501 | ||
1502 | if (urb->transfer_buffer == NULL) { | |
1503 | urb->transfer_buffer = | |
1504 | kmalloc(URB_TRANSFER_BUFFER_SIZE, GFP_KERNEL); | |
1505 | ||
1506 | if (urb->transfer_buffer == NULL) { | |
194343d9 GKH |
1507 | dev_err(&port->dev, "%s no more kernel memory...\n", |
1508 | __func__); | |
3f542974 PS |
1509 | goto exit; |
1510 | } | |
1511 | } | |
1512 | transfer_size = min(count, URB_TRANSFER_BUFFER_SIZE); | |
1513 | ||
97c4965d | 1514 | memcpy(urb->transfer_buffer, current_position, transfer_size); |
3f542974 PS |
1515 | |
1516 | /* fill urb with data and submit */ | |
1517 | usb_fill_bulk_urb(urb, | |
1518 | serial->dev, | |
1519 | usb_sndbulkpipe(serial->dev, | |
1520 | port->bulk_out_endpointAddress), | |
1521 | urb->transfer_buffer, | |
1522 | transfer_size, | |
1523 | mos7840_bulk_out_data_callback, mos7840_port); | |
1524 | ||
1525 | data1 = urb->transfer_buffer; | |
84fe6e79 | 1526 | dbg("bulkout endpoint is %d", port->bulk_out_endpointAddress); |
3f542974 PS |
1527 | |
1528 | /* send it down the pipe */ | |
1529 | status = usb_submit_urb(urb, GFP_ATOMIC); | |
1530 | ||
1531 | if (status) { | |
0de9a702 | 1532 | mos7840_port->busy[i] = 0; |
194343d9 GKH |
1533 | dev_err(&port->dev, "%s - usb_submit_urb(write bulk) failed " |
1534 | "with status = %d\n", __func__, status); | |
3f542974 PS |
1535 | bytes_sent = status; |
1536 | goto exit; | |
1537 | } | |
1538 | bytes_sent = transfer_size; | |
1539 | mos7840_port->icount.tx += transfer_size; | |
0de9a702 | 1540 | smp_wmb(); |
84fe6e79 | 1541 | dbg("mos7840_port->icount.tx is %d:", mos7840_port->icount.tx); |
95da310e | 1542 | exit: |
3f542974 PS |
1543 | return bytes_sent; |
1544 | ||
1545 | } | |
1546 | ||
1547 | /***************************************************************************** | |
1548 | * mos7840_throttle | |
1549 | * this function is called by the tty driver when it wants to stop the data | |
1550 | * being read from the port. | |
1551 | *****************************************************************************/ | |
1552 | ||
95da310e | 1553 | static void mos7840_throttle(struct tty_struct *tty) |
3f542974 | 1554 | { |
95da310e | 1555 | struct usb_serial_port *port = tty->driver_data; |
3f542974 | 1556 | struct moschip_port *mos7840_port; |
3f542974 PS |
1557 | int status; |
1558 | ||
441b62c1 | 1559 | if (mos7840_port_paranoia_check(port, __func__)) { |
84fe6e79 | 1560 | dbg("%s", "Invalid port"); |
3f542974 PS |
1561 | return; |
1562 | } | |
1563 | ||
84fe6e79 | 1564 | dbg("- port %d", port->number); |
3f542974 PS |
1565 | |
1566 | mos7840_port = mos7840_get_port_private(port); | |
1567 | ||
1568 | if (mos7840_port == NULL) | |
1569 | return; | |
1570 | ||
1571 | if (!mos7840_port->open) { | |
84fe6e79 | 1572 | dbg("%s", "port not opened"); |
3f542974 PS |
1573 | return; |
1574 | } | |
1575 | ||
84fe6e79 | 1576 | dbg("%s", "Entering .........."); |
3f542974 | 1577 | |
3f542974 PS |
1578 | /* if we are implementing XON/XOFF, send the stop character */ |
1579 | if (I_IXOFF(tty)) { | |
1580 | unsigned char stop_char = STOP_CHAR(tty); | |
95da310e AC |
1581 | status = mos7840_write(tty, port, &stop_char, 1); |
1582 | if (status <= 0) | |
3f542974 | 1583 | return; |
3f542974 | 1584 | } |
3f542974 PS |
1585 | /* if we are implementing RTS/CTS, toggle that line */ |
1586 | if (tty->termios->c_cflag & CRTSCTS) { | |
1587 | mos7840_port->shadowMCR &= ~MCR_RTS; | |
95da310e | 1588 | status = mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, |
3f542974 | 1589 | mos7840_port->shadowMCR); |
95da310e | 1590 | if (status < 0) |
3f542974 | 1591 | return; |
3f542974 PS |
1592 | } |
1593 | ||
1594 | return; | |
1595 | } | |
1596 | ||
1597 | /***************************************************************************** | |
1598 | * mos7840_unthrottle | |
880af9db AC |
1599 | * this function is called by the tty driver when it wants to resume |
1600 | * the data being read from the port (called after mos7840_throttle is | |
1601 | * called) | |
3f542974 | 1602 | *****************************************************************************/ |
95da310e | 1603 | static void mos7840_unthrottle(struct tty_struct *tty) |
3f542974 | 1604 | { |
95da310e | 1605 | struct usb_serial_port *port = tty->driver_data; |
3f542974 PS |
1606 | int status; |
1607 | struct moschip_port *mos7840_port = mos7840_get_port_private(port); | |
1608 | ||
441b62c1 | 1609 | if (mos7840_port_paranoia_check(port, __func__)) { |
84fe6e79 | 1610 | dbg("%s", "Invalid port"); |
3f542974 PS |
1611 | return; |
1612 | } | |
1613 | ||
1614 | if (mos7840_port == NULL) | |
1615 | return; | |
1616 | ||
1617 | if (!mos7840_port->open) { | |
441b62c1 | 1618 | dbg("%s - port not opened", __func__); |
3f542974 PS |
1619 | return; |
1620 | } | |
1621 | ||
84fe6e79 | 1622 | dbg("%s", "Entering .........."); |
3f542974 | 1623 | |
3f542974 PS |
1624 | /* if we are implementing XON/XOFF, send the start character */ |
1625 | if (I_IXOFF(tty)) { | |
1626 | unsigned char start_char = START_CHAR(tty); | |
95da310e AC |
1627 | status = mos7840_write(tty, port, &start_char, 1); |
1628 | if (status <= 0) | |
3f542974 | 1629 | return; |
3f542974 PS |
1630 | } |
1631 | ||
1632 | /* if we are implementing RTS/CTS, toggle that line */ | |
1633 | if (tty->termios->c_cflag & CRTSCTS) { | |
1634 | mos7840_port->shadowMCR |= MCR_RTS; | |
95da310e | 1635 | status = mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, |
3f542974 | 1636 | mos7840_port->shadowMCR); |
95da310e | 1637 | if (status < 0) |
3f542974 | 1638 | return; |
3f542974 | 1639 | } |
3f542974 PS |
1640 | } |
1641 | ||
95da310e | 1642 | static int mos7840_tiocmget(struct tty_struct *tty, struct file *file) |
3f542974 | 1643 | { |
95da310e | 1644 | struct usb_serial_port *port = tty->driver_data; |
3f542974 PS |
1645 | struct moschip_port *mos7840_port; |
1646 | unsigned int result; | |
1647 | __u16 msr; | |
1648 | __u16 mcr; | |
880af9db | 1649 | int status; |
3f542974 PS |
1650 | mos7840_port = mos7840_get_port_private(port); |
1651 | ||
441b62c1 | 1652 | dbg("%s - port %d", __func__, port->number); |
3f542974 PS |
1653 | |
1654 | if (mos7840_port == NULL) | |
1655 | return -ENODEV; | |
1656 | ||
1657 | status = mos7840_get_uart_reg(port, MODEM_STATUS_REGISTER, &msr); | |
1658 | status = mos7840_get_uart_reg(port, MODEM_CONTROL_REGISTER, &mcr); | |
1659 | result = ((mcr & MCR_DTR) ? TIOCM_DTR : 0) | |
1660 | | ((mcr & MCR_RTS) ? TIOCM_RTS : 0) | |
1661 | | ((mcr & MCR_LOOPBACK) ? TIOCM_LOOP : 0) | |
1662 | | ((msr & MOS7840_MSR_CTS) ? TIOCM_CTS : 0) | |
1663 | | ((msr & MOS7840_MSR_CD) ? TIOCM_CAR : 0) | |
1664 | | ((msr & MOS7840_MSR_RI) ? TIOCM_RI : 0) | |
1665 | | ((msr & MOS7840_MSR_DSR) ? TIOCM_DSR : 0); | |
1666 | ||
441b62c1 | 1667 | dbg("%s - 0x%04X", __func__, result); |
3f542974 PS |
1668 | |
1669 | return result; | |
1670 | } | |
1671 | ||
95da310e | 1672 | static int mos7840_tiocmset(struct tty_struct *tty, struct file *file, |
3f542974 PS |
1673 | unsigned int set, unsigned int clear) |
1674 | { | |
95da310e | 1675 | struct usb_serial_port *port = tty->driver_data; |
3f542974 PS |
1676 | struct moschip_port *mos7840_port; |
1677 | unsigned int mcr; | |
87521c46 | 1678 | int status; |
3f542974 | 1679 | |
441b62c1 | 1680 | dbg("%s - port %d", __func__, port->number); |
3f542974 PS |
1681 | |
1682 | mos7840_port = mos7840_get_port_private(port); | |
1683 | ||
1684 | if (mos7840_port == NULL) | |
1685 | return -ENODEV; | |
1686 | ||
e2984494 | 1687 | /* FIXME: What locks the port registers ? */ |
3f542974 PS |
1688 | mcr = mos7840_port->shadowMCR; |
1689 | if (clear & TIOCM_RTS) | |
1690 | mcr &= ~MCR_RTS; | |
1691 | if (clear & TIOCM_DTR) | |
1692 | mcr &= ~MCR_DTR; | |
1693 | if (clear & TIOCM_LOOP) | |
1694 | mcr &= ~MCR_LOOPBACK; | |
1695 | ||
1696 | if (set & TIOCM_RTS) | |
1697 | mcr |= MCR_RTS; | |
1698 | if (set & TIOCM_DTR) | |
1699 | mcr |= MCR_DTR; | |
1700 | if (set & TIOCM_LOOP) | |
1701 | mcr |= MCR_LOOPBACK; | |
1702 | ||
1703 | mos7840_port->shadowMCR = mcr; | |
1704 | ||
3f542974 PS |
1705 | status = mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, mcr); |
1706 | if (status < 0) { | |
84fe6e79 | 1707 | dbg("setting MODEM_CONTROL_REGISTER Failed"); |
87521c46 | 1708 | return status; |
3f542974 PS |
1709 | } |
1710 | ||
1711 | return 0; | |
1712 | } | |
1713 | ||
1714 | /***************************************************************************** | |
1715 | * mos7840_calc_baud_rate_divisor | |
1716 | * this function calculates the proper baud rate divisor for the specified | |
1717 | * baud rate. | |
1718 | *****************************************************************************/ | |
1719 | static int mos7840_calc_baud_rate_divisor(int baudRate, int *divisor, | |
880af9db | 1720 | __u16 *clk_sel_val) |
3f542974 PS |
1721 | { |
1722 | ||
441b62c1 | 1723 | dbg("%s - %d", __func__, baudRate); |
3f542974 PS |
1724 | |
1725 | if (baudRate <= 115200) { | |
1726 | *divisor = 115200 / baudRate; | |
1727 | *clk_sel_val = 0x0; | |
1728 | } | |
1729 | if ((baudRate > 115200) && (baudRate <= 230400)) { | |
1730 | *divisor = 230400 / baudRate; | |
1731 | *clk_sel_val = 0x10; | |
1732 | } else if ((baudRate > 230400) && (baudRate <= 403200)) { | |
1733 | *divisor = 403200 / baudRate; | |
1734 | *clk_sel_val = 0x20; | |
1735 | } else if ((baudRate > 403200) && (baudRate <= 460800)) { | |
1736 | *divisor = 460800 / baudRate; | |
1737 | *clk_sel_val = 0x30; | |
1738 | } else if ((baudRate > 460800) && (baudRate <= 806400)) { | |
1739 | *divisor = 806400 / baudRate; | |
1740 | *clk_sel_val = 0x40; | |
1741 | } else if ((baudRate > 806400) && (baudRate <= 921600)) { | |
1742 | *divisor = 921600 / baudRate; | |
1743 | *clk_sel_val = 0x50; | |
1744 | } else if ((baudRate > 921600) && (baudRate <= 1572864)) { | |
1745 | *divisor = 1572864 / baudRate; | |
1746 | *clk_sel_val = 0x60; | |
1747 | } else if ((baudRate > 1572864) && (baudRate <= 3145728)) { | |
1748 | *divisor = 3145728 / baudRate; | |
1749 | *clk_sel_val = 0x70; | |
1750 | } | |
1751 | return 0; | |
1752 | ||
1753 | #ifdef NOTMCS7840 | |
1754 | ||
1755 | for (i = 0; i < ARRAY_SIZE(mos7840_divisor_table); i++) { | |
1756 | if (mos7840_divisor_table[i].BaudRate == baudrate) { | |
1757 | *divisor = mos7840_divisor_table[i].Divisor; | |
1758 | return 0; | |
1759 | } | |
1760 | } | |
1761 | ||
1762 | /* After trying for all the standard baud rates * | |
1763 | * Try calculating the divisor for this baud rate */ | |
1764 | ||
1765 | if (baudrate > 75 && baudrate < 230400) { | |
1766 | /* get the divisor */ | |
1767 | custom = (__u16) (230400L / baudrate); | |
1768 | ||
1769 | /* Check for round off */ | |
1770 | round1 = (__u16) (2304000L / baudrate); | |
1771 | round = (__u16) (round1 - (custom * 10)); | |
880af9db | 1772 | if (round > 4) |
3f542974 | 1773 | custom++; |
3f542974 PS |
1774 | *divisor = custom; |
1775 | ||
84fe6e79 | 1776 | dbg(" Baud %d = %d", baudrate, custom); |
3f542974 PS |
1777 | return 0; |
1778 | } | |
1779 | ||
84fe6e79 | 1780 | dbg("%s", " Baud calculation Failed..."); |
3f542974 PS |
1781 | return -1; |
1782 | #endif | |
1783 | } | |
1784 | ||
1785 | /***************************************************************************** | |
1786 | * mos7840_send_cmd_write_baud_rate | |
1787 | * this function sends the proper command to change the baud rate of the | |
1788 | * specified port. | |
1789 | *****************************************************************************/ | |
1790 | ||
1791 | static int mos7840_send_cmd_write_baud_rate(struct moschip_port *mos7840_port, | |
1792 | int baudRate) | |
1793 | { | |
1794 | int divisor = 0; | |
1795 | int status; | |
1796 | __u16 Data; | |
1797 | unsigned char number; | |
1798 | __u16 clk_sel_val; | |
1799 | struct usb_serial_port *port; | |
1800 | ||
1801 | if (mos7840_port == NULL) | |
1802 | return -1; | |
1803 | ||
1804 | port = (struct usb_serial_port *)mos7840_port->port; | |
441b62c1 | 1805 | if (mos7840_port_paranoia_check(port, __func__)) { |
84fe6e79 | 1806 | dbg("%s", "Invalid port"); |
3f542974 PS |
1807 | return -1; |
1808 | } | |
1809 | ||
441b62c1 | 1810 | if (mos7840_serial_paranoia_check(port->serial, __func__)) { |
84fe6e79 | 1811 | dbg("%s", "Invalid Serial"); |
3f542974 PS |
1812 | return -1; |
1813 | } | |
1814 | ||
84fe6e79 | 1815 | dbg("%s", "Entering .........."); |
3f542974 PS |
1816 | |
1817 | number = mos7840_port->port->number - mos7840_port->port->serial->minor; | |
1818 | ||
441b62c1 | 1819 | dbg("%s - port = %d, baud = %d", __func__, |
3f542974 | 1820 | mos7840_port->port->number, baudRate); |
880af9db | 1821 | /* reset clk_uart_sel in spregOffset */ |
3f542974 PS |
1822 | if (baudRate > 115200) { |
1823 | #ifdef HW_flow_control | |
880af9db AC |
1824 | /* NOTE: need to see the pther register to modify */ |
1825 | /* setting h/w flow control bit to 1 */ | |
3f542974 PS |
1826 | Data = 0x2b; |
1827 | mos7840_port->shadowMCR = Data; | |
880af9db AC |
1828 | status = mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, |
1829 | Data); | |
3f542974 | 1830 | if (status < 0) { |
84fe6e79 | 1831 | dbg("Writing spreg failed in set_serial_baud"); |
3f542974 PS |
1832 | return -1; |
1833 | } | |
1834 | #endif | |
1835 | ||
1836 | } else { | |
1837 | #ifdef HW_flow_control | |
880af9db | 1838 | / *setting h/w flow control bit to 0 */ |
3f542974 PS |
1839 | Data = 0xb; |
1840 | mos7840_port->shadowMCR = Data; | |
880af9db AC |
1841 | status = mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, |
1842 | Data); | |
3f542974 | 1843 | if (status < 0) { |
84fe6e79 | 1844 | dbg("Writing spreg failed in set_serial_baud"); |
3f542974 PS |
1845 | return -1; |
1846 | } | |
1847 | #endif | |
1848 | ||
1849 | } | |
1850 | ||
880af9db | 1851 | if (1) { /* baudRate <= 115200) */ |
3f542974 PS |
1852 | clk_sel_val = 0x0; |
1853 | Data = 0x0; | |
880af9db | 1854 | status = mos7840_calc_baud_rate_divisor(baudRate, &divisor, |
3f542974 | 1855 | &clk_sel_val); |
880af9db AC |
1856 | status = mos7840_get_reg_sync(port, mos7840_port->SpRegOffset, |
1857 | &Data); | |
3f542974 | 1858 | if (status < 0) { |
84fe6e79 | 1859 | dbg("reading spreg failed in set_serial_baud"); |
3f542974 PS |
1860 | return -1; |
1861 | } | |
1862 | Data = (Data & 0x8f) | clk_sel_val; | |
880af9db AC |
1863 | status = mos7840_set_reg_sync(port, mos7840_port->SpRegOffset, |
1864 | Data); | |
3f542974 | 1865 | if (status < 0) { |
84fe6e79 | 1866 | dbg("Writing spreg failed in set_serial_baud"); |
3f542974 PS |
1867 | return -1; |
1868 | } | |
1869 | /* Calculate the Divisor */ | |
1870 | ||
1871 | if (status) { | |
194343d9 | 1872 | dev_err(&port->dev, "%s - bad baud rate\n", __func__); |
3f542974 PS |
1873 | return status; |
1874 | } | |
1875 | /* Enable access to divisor latch */ | |
1876 | Data = mos7840_port->shadowLCR | SERIAL_LCR_DLAB; | |
1877 | mos7840_port->shadowLCR = Data; | |
1878 | mos7840_set_uart_reg(port, LINE_CONTROL_REGISTER, Data); | |
1879 | ||
1880 | /* Write the divisor */ | |
1881 | Data = (unsigned char)(divisor & 0xff); | |
84fe6e79 | 1882 | dbg("set_serial_baud Value to write DLL is %x", Data); |
3f542974 PS |
1883 | mos7840_set_uart_reg(port, DIVISOR_LATCH_LSB, Data); |
1884 | ||
1885 | Data = (unsigned char)((divisor & 0xff00) >> 8); | |
84fe6e79 | 1886 | dbg("set_serial_baud Value to write DLM is %x", Data); |
3f542974 PS |
1887 | mos7840_set_uart_reg(port, DIVISOR_LATCH_MSB, Data); |
1888 | ||
1889 | /* Disable access to divisor latch */ | |
1890 | Data = mos7840_port->shadowLCR & ~SERIAL_LCR_DLAB; | |
1891 | mos7840_port->shadowLCR = Data; | |
1892 | mos7840_set_uart_reg(port, LINE_CONTROL_REGISTER, Data); | |
1893 | ||
1894 | } | |
3f542974 PS |
1895 | return status; |
1896 | } | |
1897 | ||
1898 | /***************************************************************************** | |
1899 | * mos7840_change_port_settings | |
1900 | * This routine is called to set the UART on the device to match | |
1901 | * the specified new settings. | |
1902 | *****************************************************************************/ | |
1903 | ||
95da310e AC |
1904 | static void mos7840_change_port_settings(struct tty_struct *tty, |
1905 | struct moschip_port *mos7840_port, struct ktermios *old_termios) | |
3f542974 | 1906 | { |
3f542974 PS |
1907 | int baud; |
1908 | unsigned cflag; | |
1909 | unsigned iflag; | |
1910 | __u8 lData; | |
1911 | __u8 lParity; | |
1912 | __u8 lStop; | |
1913 | int status; | |
1914 | __u16 Data; | |
1915 | struct usb_serial_port *port; | |
1916 | struct usb_serial *serial; | |
1917 | ||
1918 | if (mos7840_port == NULL) | |
1919 | return; | |
1920 | ||
1921 | port = (struct usb_serial_port *)mos7840_port->port; | |
1922 | ||
441b62c1 | 1923 | if (mos7840_port_paranoia_check(port, __func__)) { |
84fe6e79 | 1924 | dbg("%s", "Invalid port"); |
3f542974 PS |
1925 | return; |
1926 | } | |
1927 | ||
441b62c1 | 1928 | if (mos7840_serial_paranoia_check(port->serial, __func__)) { |
84fe6e79 | 1929 | dbg("%s", "Invalid Serial"); |
3f542974 PS |
1930 | return; |
1931 | } | |
1932 | ||
1933 | serial = port->serial; | |
1934 | ||
441b62c1 | 1935 | dbg("%s - port %d", __func__, mos7840_port->port->number); |
3f542974 PS |
1936 | |
1937 | if (!mos7840_port->open) { | |
441b62c1 | 1938 | dbg("%s - port not opened", __func__); |
3f542974 PS |
1939 | return; |
1940 | } | |
1941 | ||
84fe6e79 | 1942 | dbg("%s", "Entering .........."); |
3f542974 PS |
1943 | |
1944 | lData = LCR_BITS_8; | |
1945 | lStop = LCR_STOP_1; | |
1946 | lParity = LCR_PAR_NONE; | |
1947 | ||
1948 | cflag = tty->termios->c_cflag; | |
1949 | iflag = tty->termios->c_iflag; | |
1950 | ||
1951 | /* Change the number of bits */ | |
1952 | if (cflag & CSIZE) { | |
1953 | switch (cflag & CSIZE) { | |
1954 | case CS5: | |
1955 | lData = LCR_BITS_5; | |
1956 | break; | |
1957 | ||
1958 | case CS6: | |
1959 | lData = LCR_BITS_6; | |
1960 | break; | |
1961 | ||
1962 | case CS7: | |
1963 | lData = LCR_BITS_7; | |
1964 | break; | |
1965 | default: | |
1966 | case CS8: | |
1967 | lData = LCR_BITS_8; | |
1968 | break; | |
1969 | } | |
1970 | } | |
1971 | /* Change the Parity bit */ | |
1972 | if (cflag & PARENB) { | |
1973 | if (cflag & PARODD) { | |
1974 | lParity = LCR_PAR_ODD; | |
441b62c1 | 1975 | dbg("%s - parity = odd", __func__); |
3f542974 PS |
1976 | } else { |
1977 | lParity = LCR_PAR_EVEN; | |
441b62c1 | 1978 | dbg("%s - parity = even", __func__); |
3f542974 PS |
1979 | } |
1980 | ||
1981 | } else { | |
441b62c1 | 1982 | dbg("%s - parity = none", __func__); |
3f542974 PS |
1983 | } |
1984 | ||
880af9db | 1985 | if (cflag & CMSPAR) |
3f542974 | 1986 | lParity = lParity | 0x20; |
3f542974 PS |
1987 | |
1988 | /* Change the Stop bit */ | |
1989 | if (cflag & CSTOPB) { | |
1990 | lStop = LCR_STOP_2; | |
441b62c1 | 1991 | dbg("%s - stop bits = 2", __func__); |
3f542974 PS |
1992 | } else { |
1993 | lStop = LCR_STOP_1; | |
441b62c1 | 1994 | dbg("%s - stop bits = 1", __func__); |
3f542974 PS |
1995 | } |
1996 | ||
1997 | /* Update the LCR with the correct value */ | |
1998 | mos7840_port->shadowLCR &= | |
1999 | ~(LCR_BITS_MASK | LCR_STOP_MASK | LCR_PAR_MASK); | |
2000 | mos7840_port->shadowLCR |= (lData | lParity | lStop); | |
2001 | ||
84fe6e79 | 2002 | dbg("mos7840_change_port_settings mos7840_port->shadowLCR is %x", |
3f542974 PS |
2003 | mos7840_port->shadowLCR); |
2004 | /* Disable Interrupts */ | |
2005 | Data = 0x00; | |
2006 | mos7840_set_uart_reg(port, INTERRUPT_ENABLE_REGISTER, Data); | |
2007 | ||
2008 | Data = 0x00; | |
2009 | mos7840_set_uart_reg(port, FIFO_CONTROL_REGISTER, Data); | |
2010 | ||
2011 | Data = 0xcf; | |
2012 | mos7840_set_uart_reg(port, FIFO_CONTROL_REGISTER, Data); | |
2013 | ||
2014 | /* Send the updated LCR value to the mos7840 */ | |
2015 | Data = mos7840_port->shadowLCR; | |
2016 | ||
2017 | mos7840_set_uart_reg(port, LINE_CONTROL_REGISTER, Data); | |
2018 | ||
2019 | Data = 0x00b; | |
2020 | mos7840_port->shadowMCR = Data; | |
2021 | mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, Data); | |
2022 | Data = 0x00b; | |
2023 | mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, Data); | |
2024 | ||
2025 | /* set up the MCR register and send it to the mos7840 */ | |
2026 | ||
2027 | mos7840_port->shadowMCR = MCR_MASTER_IE; | |
880af9db | 2028 | if (cflag & CBAUD) |
3f542974 | 2029 | mos7840_port->shadowMCR |= (MCR_DTR | MCR_RTS); |
3f542974 | 2030 | |
880af9db | 2031 | if (cflag & CRTSCTS) |
3f542974 | 2032 | mos7840_port->shadowMCR |= (MCR_XON_ANY); |
880af9db | 2033 | else |
3f542974 | 2034 | mos7840_port->shadowMCR &= ~(MCR_XON_ANY); |
3f542974 PS |
2035 | |
2036 | Data = mos7840_port->shadowMCR; | |
2037 | mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, Data); | |
2038 | ||
2039 | /* Determine divisor based on baud rate */ | |
2040 | baud = tty_get_baud_rate(tty); | |
2041 | ||
2042 | if (!baud) { | |
2043 | /* pick a default, any default... */ | |
84fe6e79 | 2044 | dbg("%s", "Picked default baud..."); |
3f542974 PS |
2045 | baud = 9600; |
2046 | } | |
2047 | ||
441b62c1 | 2048 | dbg("%s - baud rate = %d", __func__, baud); |
3f542974 PS |
2049 | status = mos7840_send_cmd_write_baud_rate(mos7840_port, baud); |
2050 | ||
2051 | /* Enable Interrupts */ | |
2052 | Data = 0x0c; | |
2053 | mos7840_set_uart_reg(port, INTERRUPT_ENABLE_REGISTER, Data); | |
2054 | ||
50de36f7 | 2055 | if (mos7840_port->read_urb_busy == false) { |
3f542974 | 2056 | mos7840_port->read_urb->dev = serial->dev; |
50de36f7 | 2057 | mos7840_port->read_urb_busy = true; |
3f542974 | 2058 | status = usb_submit_urb(mos7840_port->read_urb, GFP_ATOMIC); |
3f542974 | 2059 | if (status) { |
50de36f7 | 2060 | dbg("usb_submit_urb(read bulk) failed, status = %d", |
3f542974 | 2061 | status); |
50de36f7 | 2062 | mos7840_port->read_urb_busy = false; |
3f542974 PS |
2063 | } |
2064 | } | |
2065 | wake_up(&mos7840_port->delta_msr_wait); | |
2066 | mos7840_port->delta_msr_cond = 1; | |
84fe6e79 | 2067 | dbg("mos7840_change_port_settings mos7840_port->shadowLCR is End %x", |
3f542974 PS |
2068 | mos7840_port->shadowLCR); |
2069 | ||
2070 | return; | |
2071 | } | |
2072 | ||
2073 | /***************************************************************************** | |
2074 | * mos7840_set_termios | |
2075 | * this function is called by the tty driver when it wants to change | |
2076 | * the termios structure | |
2077 | *****************************************************************************/ | |
2078 | ||
95da310e AC |
2079 | static void mos7840_set_termios(struct tty_struct *tty, |
2080 | struct usb_serial_port *port, | |
606d099c | 2081 | struct ktermios *old_termios) |
3f542974 PS |
2082 | { |
2083 | int status; | |
2084 | unsigned int cflag; | |
2085 | struct usb_serial *serial; | |
2086 | struct moschip_port *mos7840_port; | |
84fe6e79 | 2087 | dbg("mos7840_set_termios: START"); |
441b62c1 | 2088 | if (mos7840_port_paranoia_check(port, __func__)) { |
84fe6e79 | 2089 | dbg("%s", "Invalid port"); |
3f542974 PS |
2090 | return; |
2091 | } | |
2092 | ||
2093 | serial = port->serial; | |
2094 | ||
441b62c1 | 2095 | if (mos7840_serial_paranoia_check(serial, __func__)) { |
84fe6e79 | 2096 | dbg("%s", "Invalid Serial"); |
3f542974 PS |
2097 | return; |
2098 | } | |
2099 | ||
2100 | mos7840_port = mos7840_get_port_private(port); | |
2101 | ||
2102 | if (mos7840_port == NULL) | |
2103 | return; | |
2104 | ||
3f542974 | 2105 | if (!mos7840_port->open) { |
441b62c1 | 2106 | dbg("%s - port not opened", __func__); |
3f542974 PS |
2107 | return; |
2108 | } | |
2109 | ||
84fe6e79 | 2110 | dbg("%s", "setting termios - "); |
3f542974 PS |
2111 | |
2112 | cflag = tty->termios->c_cflag; | |
2113 | ||
441b62c1 | 2114 | dbg("%s - clfag %08x iflag %08x", __func__, |
3f542974 | 2115 | tty->termios->c_cflag, RELEVANT_IFLAG(tty->termios->c_iflag)); |
441b62c1 | 2116 | dbg("%s - old clfag %08x old iflag %08x", __func__, |
3d3ddce5 | 2117 | old_termios->c_cflag, RELEVANT_IFLAG(old_termios->c_iflag)); |
441b62c1 | 2118 | dbg("%s - port %d", __func__, port->number); |
3f542974 PS |
2119 | |
2120 | /* change the port settings to the new ones specified */ | |
2121 | ||
95da310e | 2122 | mos7840_change_port_settings(tty, mos7840_port, old_termios); |
3f542974 PS |
2123 | |
2124 | if (!mos7840_port->read_urb) { | |
84fe6e79 | 2125 | dbg("%s", "URB KILLED !!!!!"); |
3f542974 PS |
2126 | return; |
2127 | } | |
2128 | ||
50de36f7 | 2129 | if (mos7840_port->read_urb_busy == false) { |
3f542974 | 2130 | mos7840_port->read_urb->dev = serial->dev; |
50de36f7 | 2131 | mos7840_port->read_urb_busy = true; |
3f542974 PS |
2132 | status = usb_submit_urb(mos7840_port->read_urb, GFP_ATOMIC); |
2133 | if (status) { | |
50de36f7 | 2134 | dbg("usb_submit_urb(read bulk) failed, status = %d", |
3f542974 | 2135 | status); |
50de36f7 | 2136 | mos7840_port->read_urb_busy = false; |
3f542974 PS |
2137 | } |
2138 | } | |
2139 | return; | |
2140 | } | |
2141 | ||
2142 | /***************************************************************************** | |
2143 | * mos7840_get_lsr_info - get line status register info | |
2144 | * | |
2145 | * Purpose: Let user call ioctl() to get info when the UART physically | |
2146 | * is emptied. On bus types like RS485, the transmitter must | |
2147 | * release the bus after transmitting. This must be done when | |
2148 | * the transmit shift register is empty, not be done when the | |
2149 | * transmit holding register is empty. This functionality | |
2150 | * allows an RS485 driver to be written in user space. | |
2151 | *****************************************************************************/ | |
2152 | ||
95da310e | 2153 | static int mos7840_get_lsr_info(struct tty_struct *tty, |
97c4965d | 2154 | unsigned int __user *value) |
3f542974 PS |
2155 | { |
2156 | int count; | |
2157 | unsigned int result = 0; | |
2158 | ||
95da310e | 2159 | count = mos7840_chars_in_buffer(tty); |
3f542974 | 2160 | if (count == 0) { |
441b62c1 | 2161 | dbg("%s -- Empty", __func__); |
3f542974 PS |
2162 | result = TIOCSER_TEMT; |
2163 | } | |
2164 | ||
2165 | if (copy_to_user(value, &result, sizeof(int))) | |
2166 | return -EFAULT; | |
2167 | return 0; | |
2168 | } | |
2169 | ||
3f542974 PS |
2170 | /***************************************************************************** |
2171 | * mos7840_get_serial_info | |
2172 | * function to get information about serial port | |
2173 | *****************************************************************************/ | |
2174 | ||
2175 | static int mos7840_get_serial_info(struct moschip_port *mos7840_port, | |
97c4965d | 2176 | struct serial_struct __user *retinfo) |
3f542974 PS |
2177 | { |
2178 | struct serial_struct tmp; | |
2179 | ||
2180 | if (mos7840_port == NULL) | |
2181 | return -1; | |
2182 | ||
2183 | if (!retinfo) | |
2184 | return -EFAULT; | |
2185 | ||
2186 | memset(&tmp, 0, sizeof(tmp)); | |
2187 | ||
2188 | tmp.type = PORT_16550A; | |
2189 | tmp.line = mos7840_port->port->serial->minor; | |
2190 | tmp.port = mos7840_port->port->number; | |
2191 | tmp.irq = 0; | |
2192 | tmp.flags = ASYNC_SKIP_TEST | ASYNC_AUTO_IRQ; | |
2193 | tmp.xmit_fifo_size = NUM_URBS * URB_TRANSFER_BUFFER_SIZE; | |
2194 | tmp.baud_base = 9600; | |
2195 | tmp.close_delay = 5 * HZ; | |
2196 | tmp.closing_wait = 30 * HZ; | |
2197 | ||
2198 | if (copy_to_user(retinfo, &tmp, sizeof(*retinfo))) | |
2199 | return -EFAULT; | |
2200 | return 0; | |
2201 | } | |
2202 | ||
2203 | /***************************************************************************** | |
2204 | * SerialIoctl | |
2205 | * this function handles any ioctl calls to the driver | |
2206 | *****************************************************************************/ | |
2207 | ||
95da310e | 2208 | static int mos7840_ioctl(struct tty_struct *tty, struct file *file, |
3f542974 PS |
2209 | unsigned int cmd, unsigned long arg) |
2210 | { | |
95da310e | 2211 | struct usb_serial_port *port = tty->driver_data; |
97c4965d | 2212 | void __user *argp = (void __user *)arg; |
3f542974 | 2213 | struct moschip_port *mos7840_port; |
3f542974 PS |
2214 | |
2215 | struct async_icount cnow; | |
2216 | struct async_icount cprev; | |
2217 | struct serial_icounter_struct icount; | |
3f542974 | 2218 | |
441b62c1 | 2219 | if (mos7840_port_paranoia_check(port, __func__)) { |
84fe6e79 | 2220 | dbg("%s", "Invalid port"); |
3f542974 PS |
2221 | return -1; |
2222 | } | |
2223 | ||
2224 | mos7840_port = mos7840_get_port_private(port); | |
3f542974 PS |
2225 | |
2226 | if (mos7840_port == NULL) | |
2227 | return -1; | |
2228 | ||
441b62c1 | 2229 | dbg("%s - port %d, cmd = 0x%x", __func__, port->number, cmd); |
3f542974 PS |
2230 | |
2231 | switch (cmd) { | |
2232 | /* return number of bytes available */ | |
2233 | ||
3f542974 | 2234 | case TIOCSERGETLSR: |
441b62c1 | 2235 | dbg("%s (%d) TIOCSERGETLSR", __func__, port->number); |
95da310e | 2236 | return mos7840_get_lsr_info(tty, argp); |
3f542974 PS |
2237 | return 0; |
2238 | ||
3f542974 | 2239 | case TIOCGSERIAL: |
441b62c1 | 2240 | dbg("%s (%d) TIOCGSERIAL", __func__, port->number); |
97c4965d | 2241 | return mos7840_get_serial_info(mos7840_port, argp); |
3f542974 PS |
2242 | |
2243 | case TIOCSSERIAL: | |
441b62c1 | 2244 | dbg("%s (%d) TIOCSSERIAL", __func__, port->number); |
3f542974 PS |
2245 | break; |
2246 | ||
2247 | case TIOCMIWAIT: | |
441b62c1 | 2248 | dbg("%s (%d) TIOCMIWAIT", __func__, port->number); |
3f542974 PS |
2249 | cprev = mos7840_port->icount; |
2250 | while (1) { | |
880af9db | 2251 | /* interruptible_sleep_on(&mos7840_port->delta_msr_wait); */ |
3f542974 PS |
2252 | mos7840_port->delta_msr_cond = 0; |
2253 | wait_event_interruptible(mos7840_port->delta_msr_wait, | |
2254 | (mos7840_port-> | |
2255 | delta_msr_cond == 1)); | |
2256 | ||
2257 | /* see if a signal did it */ | |
2258 | if (signal_pending(current)) | |
2259 | return -ERESTARTSYS; | |
2260 | cnow = mos7840_port->icount; | |
0de9a702 | 2261 | smp_rmb(); |
3f542974 PS |
2262 | if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr && |
2263 | cnow.dcd == cprev.dcd && cnow.cts == cprev.cts) | |
2264 | return -EIO; /* no change => error */ | |
2265 | if (((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) || | |
2266 | ((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) || | |
2267 | ((arg & TIOCM_CD) && (cnow.dcd != cprev.dcd)) || | |
2268 | ((arg & TIOCM_CTS) && (cnow.cts != cprev.cts))) { | |
2269 | return 0; | |
2270 | } | |
2271 | cprev = cnow; | |
2272 | } | |
2273 | /* NOTREACHED */ | |
2274 | break; | |
2275 | ||
2276 | case TIOCGICOUNT: | |
2277 | cnow = mos7840_port->icount; | |
0de9a702 | 2278 | smp_rmb(); |
3f542974 PS |
2279 | icount.cts = cnow.cts; |
2280 | icount.dsr = cnow.dsr; | |
2281 | icount.rng = cnow.rng; | |
2282 | icount.dcd = cnow.dcd; | |
2283 | icount.rx = cnow.rx; | |
2284 | icount.tx = cnow.tx; | |
2285 | icount.frame = cnow.frame; | |
2286 | icount.overrun = cnow.overrun; | |
2287 | icount.parity = cnow.parity; | |
2288 | icount.brk = cnow.brk; | |
2289 | icount.buf_overrun = cnow.buf_overrun; | |
2290 | ||
441b62c1 | 2291 | dbg("%s (%d) TIOCGICOUNT RX=%d, TX=%d", __func__, |
3f542974 | 2292 | port->number, icount.rx, icount.tx); |
97c4965d | 2293 | if (copy_to_user(argp, &icount, sizeof(icount))) |
3f542974 PS |
2294 | return -EFAULT; |
2295 | return 0; | |
3f542974 PS |
2296 | default: |
2297 | break; | |
2298 | } | |
3f542974 PS |
2299 | return -ENOIOCTLCMD; |
2300 | } | |
2301 | ||
2302 | static int mos7840_calc_num_ports(struct usb_serial *serial) | |
2303 | { | |
0de9a702 | 2304 | int mos7840_num_ports = 0; |
3f542974 | 2305 | |
84fe6e79 TC |
2306 | dbg("numberofendpoints: cur %d, alt %d", |
2307 | (int)serial->interface->cur_altsetting->desc.bNumEndpoints, | |
3f542974 PS |
2308 | (int)serial->interface->altsetting->desc.bNumEndpoints); |
2309 | if (serial->interface->cur_altsetting->desc.bNumEndpoints == 5) { | |
0de9a702 | 2310 | mos7840_num_ports = serial->num_ports = 2; |
3f542974 | 2311 | } else if (serial->interface->cur_altsetting->desc.bNumEndpoints == 9) { |
0de9a702 ON |
2312 | serial->num_bulk_in = 4; |
2313 | serial->num_bulk_out = 4; | |
2314 | mos7840_num_ports = serial->num_ports = 4; | |
3f542974 | 2315 | } |
84fe6e79 | 2316 | dbg ("mos7840_num_ports = %d", mos7840_num_ports); |
3f542974 PS |
2317 | return mos7840_num_ports; |
2318 | } | |
2319 | ||
2320 | /**************************************************************************** | |
2321 | * mos7840_startup | |
2322 | ****************************************************************************/ | |
2323 | ||
2324 | static int mos7840_startup(struct usb_serial *serial) | |
2325 | { | |
2326 | struct moschip_port *mos7840_port; | |
2327 | struct usb_device *dev; | |
2328 | int i, status; | |
2329 | ||
2330 | __u16 Data; | |
84fe6e79 | 2331 | dbg("%s", "mos7840_startup :Entering.........."); |
3f542974 PS |
2332 | |
2333 | if (!serial) { | |
84fe6e79 | 2334 | dbg("%s", "Invalid Handler"); |
3f542974 PS |
2335 | return -1; |
2336 | } | |
2337 | ||
2338 | dev = serial->dev; | |
2339 | ||
84fe6e79 TC |
2340 | dbg("%s", "Entering..."); |
2341 | dbg ("mos7840_startup: serial = %p", serial); | |
3f542974 PS |
2342 | |
2343 | /* we set up the pointers to the endpoints in the mos7840_open * | |
2344 | * function, as the structures aren't created yet. */ | |
2345 | ||
2346 | /* set up port private structures */ | |
2347 | for (i = 0; i < serial->num_ports; ++i) { | |
84fe6e79 | 2348 | dbg ("mos7840_startup: configuring port %d............", i); |
7ac9da10 | 2349 | mos7840_port = kzalloc(sizeof(struct moschip_port), GFP_KERNEL); |
3f542974 | 2350 | if (mos7840_port == NULL) { |
194343d9 | 2351 | dev_err(&dev->dev, "%s - Out of memory\n", __func__); |
0de9a702 ON |
2352 | status = -ENOMEM; |
2353 | i--; /* don't follow NULL pointer cleaning up */ | |
2354 | goto error; | |
3f542974 | 2355 | } |
3f542974 | 2356 | |
880af9db AC |
2357 | /* Initialize all port interrupt end point to port 0 int |
2358 | * endpoint. Our device has only one interrupt end point | |
2359 | * common to all port */ | |
3f542974 PS |
2360 | |
2361 | mos7840_port->port = serial->port[i]; | |
2362 | mos7840_set_port_private(serial->port[i], mos7840_port); | |
0de9a702 | 2363 | spin_lock_init(&mos7840_port->pool_lock); |
3f542974 | 2364 | |
37768adf TC |
2365 | /* minor is not initialised until later by |
2366 | * usb-serial.c:get_free_serial() and cannot therefore be used | |
2367 | * to index device instances */ | |
2368 | mos7840_port->port_num = i + 1; | |
2369 | dbg ("serial->port[i]->number = %d", serial->port[i]->number); | |
2370 | dbg ("serial->port[i]->serial->minor = %d", serial->port[i]->serial->minor); | |
2371 | dbg ("mos7840_port->port_num = %d", mos7840_port->port_num); | |
2372 | dbg ("serial->minor = %d", serial->minor); | |
3f542974 PS |
2373 | |
2374 | if (mos7840_port->port_num == 1) { | |
2375 | mos7840_port->SpRegOffset = 0x0; | |
2376 | mos7840_port->ControlRegOffset = 0x1; | |
2377 | mos7840_port->DcrRegOffset = 0x4; | |
2378 | } else if ((mos7840_port->port_num == 2) | |
0de9a702 | 2379 | && (serial->num_ports == 4)) { |
3f542974 PS |
2380 | mos7840_port->SpRegOffset = 0x8; |
2381 | mos7840_port->ControlRegOffset = 0x9; | |
2382 | mos7840_port->DcrRegOffset = 0x16; | |
2383 | } else if ((mos7840_port->port_num == 2) | |
0de9a702 | 2384 | && (serial->num_ports == 2)) { |
3f542974 PS |
2385 | mos7840_port->SpRegOffset = 0xa; |
2386 | mos7840_port->ControlRegOffset = 0xb; | |
2387 | mos7840_port->DcrRegOffset = 0x19; | |
2388 | } else if ((mos7840_port->port_num == 3) | |
0de9a702 | 2389 | && (serial->num_ports == 4)) { |
3f542974 PS |
2390 | mos7840_port->SpRegOffset = 0xa; |
2391 | mos7840_port->ControlRegOffset = 0xb; | |
2392 | mos7840_port->DcrRegOffset = 0x19; | |
2393 | } else if ((mos7840_port->port_num == 4) | |
0de9a702 | 2394 | && (serial->num_ports == 4)) { |
3f542974 PS |
2395 | mos7840_port->SpRegOffset = 0xc; |
2396 | mos7840_port->ControlRegOffset = 0xd; | |
2397 | mos7840_port->DcrRegOffset = 0x1c; | |
2398 | } | |
2399 | mos7840_dump_serial_port(mos7840_port); | |
3f542974 PS |
2400 | mos7840_set_port_private(serial->port[i], mos7840_port); |
2401 | ||
880af9db AC |
2402 | /* enable rx_disable bit in control register */ |
2403 | status = mos7840_get_reg_sync(serial->port[i], | |
2404 | mos7840_port->ControlRegOffset, &Data); | |
3f542974 | 2405 | if (status < 0) { |
84fe6e79 | 2406 | dbg("Reading ControlReg failed status-0x%x", status); |
3f542974 PS |
2407 | break; |
2408 | } else | |
84fe6e79 | 2409 | dbg("ControlReg Reading success val is %x, status%d", |
3f542974 | 2410 | Data, status); |
880af9db AC |
2411 | Data |= 0x08; /* setting driver done bit */ |
2412 | Data |= 0x04; /* sp1_bit to have cts change reflect in | |
2413 | modem status reg */ | |
3f542974 | 2414 | |
880af9db AC |
2415 | /* Data |= 0x20; //rx_disable bit */ |
2416 | status = mos7840_set_reg_sync(serial->port[i], | |
3f542974 PS |
2417 | mos7840_port->ControlRegOffset, Data); |
2418 | if (status < 0) { | |
84fe6e79 | 2419 | dbg("Writing ControlReg failed(rx_disable) status-0x%x", status); |
3f542974 PS |
2420 | break; |
2421 | } else | |
84fe6e79 | 2422 | dbg("ControlReg Writing success(rx_disable) status%d", |
3f542974 PS |
2423 | status); |
2424 | ||
880af9db AC |
2425 | /* Write default values in DCR (i.e 0x01 in DCR0, 0x05 in DCR2 |
2426 | and 0x24 in DCR3 */ | |
3f542974 | 2427 | Data = 0x01; |
880af9db AC |
2428 | status = mos7840_set_reg_sync(serial->port[i], |
2429 | (__u16) (mos7840_port->DcrRegOffset + 0), Data); | |
3f542974 | 2430 | if (status < 0) { |
84fe6e79 | 2431 | dbg("Writing DCR0 failed status-0x%x", status); |
3f542974 PS |
2432 | break; |
2433 | } else | |
84fe6e79 | 2434 | dbg("DCR0 Writing success status%d", status); |
3f542974 PS |
2435 | |
2436 | Data = 0x05; | |
880af9db AC |
2437 | status = mos7840_set_reg_sync(serial->port[i], |
2438 | (__u16) (mos7840_port->DcrRegOffset + 1), Data); | |
3f542974 | 2439 | if (status < 0) { |
84fe6e79 | 2440 | dbg("Writing DCR1 failed status-0x%x", status); |
3f542974 PS |
2441 | break; |
2442 | } else | |
84fe6e79 | 2443 | dbg("DCR1 Writing success status%d", status); |
3f542974 PS |
2444 | |
2445 | Data = 0x24; | |
880af9db AC |
2446 | status = mos7840_set_reg_sync(serial->port[i], |
2447 | (__u16) (mos7840_port->DcrRegOffset + 2), Data); | |
3f542974 | 2448 | if (status < 0) { |
84fe6e79 | 2449 | dbg("Writing DCR2 failed status-0x%x", status); |
3f542974 PS |
2450 | break; |
2451 | } else | |
84fe6e79 | 2452 | dbg("DCR2 Writing success status%d", status); |
3f542974 | 2453 | |
880af9db | 2454 | /* write values in clkstart0x0 and clkmulti 0x20 */ |
3f542974 | 2455 | Data = 0x0; |
880af9db | 2456 | status = mos7840_set_reg_sync(serial->port[i], |
3f542974 PS |
2457 | CLK_START_VALUE_REGISTER, Data); |
2458 | if (status < 0) { | |
84fe6e79 | 2459 | dbg("Writing CLK_START_VALUE_REGISTER failed status-0x%x", status); |
3f542974 PS |
2460 | break; |
2461 | } else | |
84fe6e79 | 2462 | dbg("CLK_START_VALUE_REGISTER Writing success status%d", status); |
3f542974 PS |
2463 | |
2464 | Data = 0x20; | |
880af9db AC |
2465 | status = mos7840_set_reg_sync(serial->port[i], |
2466 | CLK_MULTI_REGISTER, Data); | |
3f542974 | 2467 | if (status < 0) { |
84fe6e79 | 2468 | dbg("Writing CLK_MULTI_REGISTER failed status-0x%x", |
3f542974 | 2469 | status); |
0de9a702 | 2470 | goto error; |
3f542974 | 2471 | } else |
84fe6e79 | 2472 | dbg("CLK_MULTI_REGISTER Writing success status%d", |
3f542974 PS |
2473 | status); |
2474 | ||
880af9db | 2475 | /* write value 0x0 to scratchpad register */ |
3f542974 | 2476 | Data = 0x00; |
880af9db AC |
2477 | status = mos7840_set_uart_reg(serial->port[i], |
2478 | SCRATCH_PAD_REGISTER, Data); | |
3f542974 | 2479 | if (status < 0) { |
84fe6e79 | 2480 | dbg("Writing SCRATCH_PAD_REGISTER failed status-0x%x", |
3f542974 PS |
2481 | status); |
2482 | break; | |
2483 | } else | |
84fe6e79 | 2484 | dbg("SCRATCH_PAD_REGISTER Writing success status%d", |
3f542974 PS |
2485 | status); |
2486 | ||
880af9db | 2487 | /* Zero Length flag register */ |
3f542974 | 2488 | if ((mos7840_port->port_num != 1) |
0de9a702 | 2489 | && (serial->num_ports == 2)) { |
3f542974 PS |
2490 | |
2491 | Data = 0xff; | |
3f542974 | 2492 | status = mos7840_set_reg_sync(serial->port[i], |
880af9db AC |
2493 | (__u16) (ZLP_REG1 + |
2494 | ((__u16)mos7840_port->port_num)), Data); | |
84fe6e79 | 2495 | dbg("ZLIP offset %x", |
3f542974 | 2496 | (__u16) (ZLP_REG1 + |
880af9db | 2497 | ((__u16) mos7840_port->port_num))); |
3f542974 | 2498 | if (status < 0) { |
84fe6e79 | 2499 | dbg("Writing ZLP_REG%d failed status-0x%x", |
3f542974 PS |
2500 | i + 2, status); |
2501 | break; | |
2502 | } else | |
84fe6e79 | 2503 | dbg("ZLP_REG%d Writing success status%d", |
3f542974 PS |
2504 | i + 2, status); |
2505 | } else { | |
2506 | Data = 0xff; | |
3f542974 | 2507 | status = mos7840_set_reg_sync(serial->port[i], |
880af9db AC |
2508 | (__u16) (ZLP_REG1 + |
2509 | ((__u16)mos7840_port->port_num) - 0x1), Data); | |
84fe6e79 | 2510 | dbg("ZLIP offset %x", |
3f542974 PS |
2511 | (__u16) (ZLP_REG1 + |
2512 | ((__u16) mos7840_port->port_num) - 0x1)); | |
2513 | if (status < 0) { | |
84fe6e79 | 2514 | dbg("Writing ZLP_REG%d failed status-0x%x", |
3f542974 PS |
2515 | i + 1, status); |
2516 | break; | |
2517 | } else | |
84fe6e79 | 2518 | dbg("ZLP_REG%d Writing success status%d", |
3f542974 PS |
2519 | i + 1, status); |
2520 | ||
2521 | } | |
0de9a702 | 2522 | mos7840_port->control_urb = usb_alloc_urb(0, GFP_KERNEL); |
3f542974 | 2523 | mos7840_port->ctrl_buf = kmalloc(16, GFP_KERNEL); |
880af9db AC |
2524 | mos7840_port->dr = kmalloc(sizeof(struct usb_ctrlrequest), |
2525 | GFP_KERNEL); | |
2526 | if (!mos7840_port->control_urb || !mos7840_port->ctrl_buf || | |
2527 | !mos7840_port->dr) { | |
0de9a702 ON |
2528 | status = -ENOMEM; |
2529 | goto error; | |
2530 | } | |
3f542974 | 2531 | } |
84fe6e79 | 2532 | dbg ("mos7840_startup: all ports configured..........."); |
3f542974 | 2533 | |
880af9db | 2534 | /* Zero Length flag enable */ |
3f542974 | 2535 | Data = 0x0f; |
3f542974 PS |
2536 | status = mos7840_set_reg_sync(serial->port[0], ZLP_REG5, Data); |
2537 | if (status < 0) { | |
84fe6e79 | 2538 | dbg("Writing ZLP_REG5 failed status-0x%x", status); |
7ced46c3 | 2539 | goto error; |
3f542974 | 2540 | } else |
84fe6e79 | 2541 | dbg("ZLP_REG5 Writing success status%d", status); |
3f542974 PS |
2542 | |
2543 | /* setting configuration feature to one */ | |
2544 | usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), | |
97c4965d | 2545 | (__u8) 0x03, 0x00, 0x01, 0x00, NULL, 0x00, 5 * HZ); |
3f542974 | 2546 | return 0; |
0de9a702 ON |
2547 | error: |
2548 | for (/* nothing */; i >= 0; i--) { | |
2549 | mos7840_port = mos7840_get_port_private(serial->port[i]); | |
2550 | ||
2551 | kfree(mos7840_port->dr); | |
2552 | kfree(mos7840_port->ctrl_buf); | |
2553 | usb_free_urb(mos7840_port->control_urb); | |
2554 | kfree(mos7840_port); | |
2555 | serial->port[i] = NULL; | |
2556 | } | |
2557 | return status; | |
3f542974 PS |
2558 | } |
2559 | ||
2560 | /**************************************************************************** | |
f9c99bb8 | 2561 | * mos7840_disconnect |
3f542974 PS |
2562 | * This function is called whenever the device is removed from the usb bus. |
2563 | ****************************************************************************/ | |
2564 | ||
f9c99bb8 | 2565 | static void mos7840_disconnect(struct usb_serial *serial) |
3f542974 PS |
2566 | { |
2567 | int i; | |
0de9a702 | 2568 | unsigned long flags; |
3f542974 | 2569 | struct moschip_port *mos7840_port; |
f9c99bb8 | 2570 | dbg("%s", " disconnect :entering.........."); |
3f542974 PS |
2571 | |
2572 | if (!serial) { | |
84fe6e79 | 2573 | dbg("%s", "Invalid Handler"); |
3f542974 PS |
2574 | return; |
2575 | } | |
2576 | ||
880af9db | 2577 | /* check for the ports to be closed,close the ports and disconnect */ |
3f542974 PS |
2578 | |
2579 | /* free private structure allocated for serial port * | |
2580 | * stop reads and writes on all ports */ | |
2581 | ||
2582 | for (i = 0; i < serial->num_ports; ++i) { | |
2583 | mos7840_port = mos7840_get_port_private(serial->port[i]); | |
37768adf TC |
2584 | dbg ("mos7840_port %d = %p", i, mos7840_port); |
2585 | if (mos7840_port) { | |
2586 | spin_lock_irqsave(&mos7840_port->pool_lock, flags); | |
2587 | mos7840_port->zombie = 1; | |
2588 | spin_unlock_irqrestore(&mos7840_port->pool_lock, flags); | |
2589 | usb_kill_urb(mos7840_port->control_urb); | |
f9c99bb8 AS |
2590 | } |
2591 | } | |
2592 | ||
2593 | dbg("%s", "Thank u :: "); | |
2594 | ||
2595 | } | |
2596 | ||
2597 | /**************************************************************************** | |
2598 | * mos7840_release | |
2599 | * This function is called when the usb_serial structure is freed. | |
2600 | ****************************************************************************/ | |
2601 | ||
2602 | static void mos7840_release(struct usb_serial *serial) | |
2603 | { | |
2604 | int i; | |
2605 | struct moschip_port *mos7840_port; | |
2606 | dbg("%s", " release :entering.........."); | |
2607 | ||
2608 | if (!serial) { | |
2609 | dbg("%s", "Invalid Handler"); | |
2610 | return; | |
2611 | } | |
2612 | ||
2613 | /* check for the ports to be closed,close the ports and disconnect */ | |
2614 | ||
2615 | /* free private structure allocated for serial port * | |
2616 | * stop reads and writes on all ports */ | |
2617 | ||
2618 | for (i = 0; i < serial->num_ports; ++i) { | |
2619 | mos7840_port = mos7840_get_port_private(serial->port[i]); | |
2620 | dbg("mos7840_port %d = %p", i, mos7840_port); | |
2621 | if (mos7840_port) { | |
37768adf TC |
2622 | kfree(mos7840_port->ctrl_buf); |
2623 | kfree(mos7840_port->dr); | |
2624 | kfree(mos7840_port); | |
2625 | } | |
3f542974 PS |
2626 | } |
2627 | ||
84fe6e79 | 2628 | dbg("%s", "Thank u :: "); |
3f542974 PS |
2629 | |
2630 | } | |
2631 | ||
d9b1b787 JH |
2632 | static struct usb_driver io_driver = { |
2633 | .name = "mos7840", | |
2634 | .probe = usb_serial_probe, | |
2635 | .disconnect = usb_serial_disconnect, | |
2636 | .id_table = moschip_id_table_combined, | |
2637 | .no_dynamic_id = 1, | |
2638 | }; | |
2639 | ||
3f542974 PS |
2640 | static struct usb_serial_driver moschip7840_4port_device = { |
2641 | .driver = { | |
2642 | .owner = THIS_MODULE, | |
2643 | .name = "mos7840", | |
2644 | }, | |
2645 | .description = DRIVER_DESC, | |
d9b1b787 | 2646 | .usb_driver = &io_driver, |
3f542974 | 2647 | .id_table = moschip_port_id_table, |
3f542974 | 2648 | .num_ports = 4, |
3f542974 PS |
2649 | .open = mos7840_open, |
2650 | .close = mos7840_close, | |
2651 | .write = mos7840_write, | |
2652 | .write_room = mos7840_write_room, | |
2653 | .chars_in_buffer = mos7840_chars_in_buffer, | |
2654 | .throttle = mos7840_throttle, | |
2655 | .unthrottle = mos7840_unthrottle, | |
2656 | .calc_num_ports = mos7840_calc_num_ports, | |
2657 | #ifdef MCSSerialProbe | |
2658 | .probe = mos7840_serial_probe, | |
2659 | #endif | |
2660 | .ioctl = mos7840_ioctl, | |
2661 | .set_termios = mos7840_set_termios, | |
2662 | .break_ctl = mos7840_break, | |
2663 | .tiocmget = mos7840_tiocmget, | |
2664 | .tiocmset = mos7840_tiocmset, | |
2665 | .attach = mos7840_startup, | |
f9c99bb8 AS |
2666 | .disconnect = mos7840_disconnect, |
2667 | .release = mos7840_release, | |
3f542974 PS |
2668 | .read_bulk_callback = mos7840_bulk_in_callback, |
2669 | .read_int_callback = mos7840_interrupt_callback, | |
2670 | }; | |
2671 | ||
3f542974 PS |
2672 | /**************************************************************************** |
2673 | * moschip7840_init | |
2674 | * This is called by the module subsystem, or on startup to initialize us | |
2675 | ****************************************************************************/ | |
2676 | static int __init moschip7840_init(void) | |
2677 | { | |
2678 | int retval; | |
2679 | ||
84fe6e79 | 2680 | dbg("%s", " mos7840_init :entering.........."); |
3f542974 PS |
2681 | |
2682 | /* Register with the usb serial */ | |
2683 | retval = usb_serial_register(&moschip7840_4port_device); | |
2684 | ||
2685 | if (retval) | |
2686 | goto failed_port_device_register; | |
2687 | ||
84fe6e79 | 2688 | dbg("%s", "Entering..."); |
c197a8db GKH |
2689 | printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":" |
2690 | DRIVER_DESC "\n"); | |
3f542974 PS |
2691 | |
2692 | /* Register with the usb */ | |
2693 | retval = usb_register(&io_driver); | |
3f542974 | 2694 | if (retval == 0) { |
84fe6e79 | 2695 | dbg("%s", "Leaving..."); |
3f542974 PS |
2696 | return 0; |
2697 | } | |
3f542974 | 2698 | usb_serial_deregister(&moschip7840_4port_device); |
880af9db | 2699 | failed_port_device_register: |
3f542974 PS |
2700 | return retval; |
2701 | } | |
2702 | ||
2703 | /**************************************************************************** | |
2704 | * moschip7840_exit | |
2705 | * Called when the driver is about to be unloaded. | |
2706 | ****************************************************************************/ | |
2707 | static void __exit moschip7840_exit(void) | |
2708 | { | |
2709 | ||
84fe6e79 | 2710 | dbg("%s", " mos7840_exit :entering.........."); |
3f542974 PS |
2711 | |
2712 | usb_deregister(&io_driver); | |
2713 | ||
2714 | usb_serial_deregister(&moschip7840_4port_device); | |
2715 | ||
84fe6e79 | 2716 | dbg("%s", "Entering..."); |
3f542974 PS |
2717 | } |
2718 | ||
2719 | module_init(moschip7840_init); | |
2720 | module_exit(moschip7840_exit); | |
2721 | ||
2722 | /* Module information */ | |
2723 | MODULE_DESCRIPTION(DRIVER_DESC); | |
2724 | MODULE_LICENSE("GPL"); | |
2725 | ||
2726 | module_param(debug, bool, S_IRUGO | S_IWUSR); | |
2727 | MODULE_PARM_DESC(debug, "Debug enabled or not"); |