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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 | ||
1e658489 | 85 | #define MOS_WDR_TIMEOUT 5000 /* default urb timeout */ |
3f542974 PS |
86 | |
87 | #define MOS_PORT1 0x0200 | |
88 | #define MOS_PORT2 0x0300 | |
89 | #define MOS_VENREG 0x0000 | |
90 | #define MOS_MAX_PORT 0x02 | |
91 | #define MOS_WRITE 0x0E | |
92 | #define MOS_READ 0x0D | |
93 | ||
94 | /* Requests */ | |
95 | #define MCS_RD_RTYPE 0xC0 | |
96 | #define MCS_WR_RTYPE 0x40 | |
97 | #define MCS_RDREQ 0x0D | |
98 | #define MCS_WRREQ 0x0E | |
99 | #define MCS_CTRL_TIMEOUT 500 | |
100 | #define VENDOR_READ_LENGTH (0x01) | |
101 | ||
102 | #define MAX_NAME_LEN 64 | |
103 | ||
880af9db AC |
104 | #define ZLP_REG1 0x3A /* Zero_Flag_Reg1 58 */ |
105 | #define ZLP_REG5 0x3E /* Zero_Flag_Reg5 62 */ | |
3f542974 PS |
106 | |
107 | /* For higher baud Rates use TIOCEXBAUD */ | |
108 | #define TIOCEXBAUD 0x5462 | |
109 | ||
110 | /* vendor id and device id defines */ | |
111 | ||
11e1abb4 | 112 | /* The native mos7840/7820 component */ |
3f542974 PS |
113 | #define USB_VENDOR_ID_MOSCHIP 0x9710 |
114 | #define MOSCHIP_DEVICE_ID_7840 0x7840 | |
115 | #define MOSCHIP_DEVICE_ID_7820 0x7820 | |
0eafe4de | 116 | #define MOSCHIP_DEVICE_ID_7810 0x7810 |
11e1abb4 DL |
117 | /* The native component can have its vendor/device id's overridden |
118 | * in vendor-specific implementations. Such devices can be handled | |
68e24113 | 119 | * by making a change here, in id_table. |
11e1abb4 | 120 | */ |
870408c8 DL |
121 | #define USB_VENDOR_ID_BANDB 0x0856 |
122 | #define BANDB_DEVICE_ID_USO9ML2_2 0xAC22 | |
123 | #define BANDB_DEVICE_ID_USO9ML2_2P 0xBC00 | |
124 | #define BANDB_DEVICE_ID_USO9ML2_4 0xAC24 | |
125 | #define BANDB_DEVICE_ID_USO9ML2_4P 0xBC01 | |
126 | #define BANDB_DEVICE_ID_US9ML2_2 0xAC29 | |
127 | #define BANDB_DEVICE_ID_US9ML2_4 0xAC30 | |
128 | #define BANDB_DEVICE_ID_USPTL4_2 0xAC31 | |
129 | #define BANDB_DEVICE_ID_USPTL4_4 0xAC32 | |
130 | #define BANDB_DEVICE_ID_USOPTL4_2 0xAC42 | |
131 | #define BANDB_DEVICE_ID_USOPTL4_2P 0xBC02 | |
132 | #define BANDB_DEVICE_ID_USOPTL4_4 0xAC44 | |
133 | #define BANDB_DEVICE_ID_USOPTL4_4P 0xBC03 | |
134 | #define BANDB_DEVICE_ID_USOPTL2_4 0xAC24 | |
3f542974 | 135 | |
9d498bea RL |
136 | /* This driver also supports |
137 | * ATEN UC2324 device using Moschip MCS7840 | |
138 | * ATEN UC2322 device using Moschip MCS7820 | |
139 | */ | |
e9b8cffa TC |
140 | #define USB_VENDOR_ID_ATENINTL 0x0557 |
141 | #define ATENINTL_DEVICE_ID_UC2324 0x2011 | |
9d498bea | 142 | #define ATENINTL_DEVICE_ID_UC2322 0x7820 |
e9b8cffa | 143 | |
11e1abb4 | 144 | /* Interrupt Routine Defines */ |
3f542974 PS |
145 | |
146 | #define SERIAL_IIR_RLS 0x06 | |
147 | #define SERIAL_IIR_MS 0x00 | |
148 | ||
149 | /* | |
150 | * Emulation of the bit mask on the LINE STATUS REGISTER. | |
151 | */ | |
152 | #define SERIAL_LSR_DR 0x0001 | |
153 | #define SERIAL_LSR_OE 0x0002 | |
154 | #define SERIAL_LSR_PE 0x0004 | |
155 | #define SERIAL_LSR_FE 0x0008 | |
156 | #define SERIAL_LSR_BI 0x0010 | |
157 | ||
158 | #define MOS_MSR_DELTA_CTS 0x10 | |
159 | #define MOS_MSR_DELTA_DSR 0x20 | |
160 | #define MOS_MSR_DELTA_RI 0x40 | |
161 | #define MOS_MSR_DELTA_CD 0x80 | |
162 | ||
880af9db | 163 | /* Serial Port register Address */ |
3f542974 PS |
164 | #define INTERRUPT_ENABLE_REGISTER ((__u16)(0x01)) |
165 | #define FIFO_CONTROL_REGISTER ((__u16)(0x02)) | |
166 | #define LINE_CONTROL_REGISTER ((__u16)(0x03)) | |
167 | #define MODEM_CONTROL_REGISTER ((__u16)(0x04)) | |
168 | #define LINE_STATUS_REGISTER ((__u16)(0x05)) | |
169 | #define MODEM_STATUS_REGISTER ((__u16)(0x06)) | |
170 | #define SCRATCH_PAD_REGISTER ((__u16)(0x07)) | |
171 | #define DIVISOR_LATCH_LSB ((__u16)(0x00)) | |
172 | #define DIVISOR_LATCH_MSB ((__u16)(0x01)) | |
173 | ||
174 | #define CLK_MULTI_REGISTER ((__u16)(0x02)) | |
175 | #define CLK_START_VALUE_REGISTER ((__u16)(0x03)) | |
093ea2d3 | 176 | #define GPIO_REGISTER ((__u16)(0x07)) |
3f542974 PS |
177 | |
178 | #define SERIAL_LCR_DLAB ((__u16)(0x0080)) | |
179 | ||
180 | /* | |
181 | * URB POOL related defines | |
182 | */ | |
183 | #define NUM_URBS 16 /* URB Count */ | |
184 | #define URB_TRANSFER_BUFFER_SIZE 32 /* URB Size */ | |
185 | ||
0eafe4de D |
186 | /* LED on/off milliseconds*/ |
187 | #define LED_ON_MS 500 | |
188 | #define LED_OFF_MS 500 | |
189 | ||
190 | static int device_type; | |
3f542974 | 191 | |
b9c87663 | 192 | static const struct usb_device_id id_table[] = { |
3f542974 PS |
193 | {USB_DEVICE(USB_VENDOR_ID_MOSCHIP, MOSCHIP_DEVICE_ID_7840)}, |
194 | {USB_DEVICE(USB_VENDOR_ID_MOSCHIP, MOSCHIP_DEVICE_ID_7820)}, | |
0eafe4de | 195 | {USB_DEVICE(USB_VENDOR_ID_MOSCHIP, MOSCHIP_DEVICE_ID_7810)}, |
acf509ae | 196 | {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USO9ML2_2)}, |
870408c8 | 197 | {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USO9ML2_2P)}, |
acf509ae | 198 | {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USO9ML2_4)}, |
870408c8 | 199 | {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USO9ML2_4P)}, |
acf509ae CB |
200 | {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_US9ML2_2)}, |
201 | {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_US9ML2_4)}, | |
202 | {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USPTL4_2)}, | |
203 | {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USPTL4_4)}, | |
11e1abb4 | 204 | {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USOPTL4_2)}, |
870408c8 | 205 | {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USOPTL4_2P)}, |
acf509ae | 206 | {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USOPTL4_4)}, |
870408c8 | 207 | {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USOPTL4_4P)}, |
27f1281d | 208 | {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USOPTL2_4)}, |
e9b8cffa | 209 | {USB_DEVICE(USB_VENDOR_ID_ATENINTL, ATENINTL_DEVICE_ID_UC2324)}, |
9d498bea | 210 | {USB_DEVICE(USB_VENDOR_ID_ATENINTL, ATENINTL_DEVICE_ID_UC2322)}, |
3f542974 PS |
211 | {} /* terminating entry */ |
212 | }; | |
68e24113 | 213 | MODULE_DEVICE_TABLE(usb, id_table); |
3f542974 PS |
214 | |
215 | /* This structure holds all of the local port information */ | |
216 | ||
217 | struct moschip_port { | |
218 | int port_num; /*Actual port number in the device(1,2,etc) */ | |
219 | struct urb *write_urb; /* write URB for this port */ | |
220 | struct urb *read_urb; /* read URB for this port */ | |
0de9a702 | 221 | struct urb *int_urb; |
3f542974 PS |
222 | __u8 shadowLCR; /* last LCR value received */ |
223 | __u8 shadowMCR; /* last MCR value received */ | |
224 | char open; | |
0de9a702 ON |
225 | char open_ports; |
226 | char zombie; | |
3f542974 PS |
227 | wait_queue_head_t wait_chase; /* for handling sleeping while waiting for chase to finish */ |
228 | wait_queue_head_t delta_msr_wait; /* for handling sleeping while waiting for msr change to happen */ | |
229 | int delta_msr_cond; | |
230 | struct async_icount icount; | |
231 | struct usb_serial_port *port; /* loop back to the owner of this object */ | |
232 | ||
880af9db | 233 | /* Offsets */ |
3f542974 PS |
234 | __u8 SpRegOffset; |
235 | __u8 ControlRegOffset; | |
236 | __u8 DcrRegOffset; | |
880af9db | 237 | /* for processing control URBS in interrupt context */ |
3f542974 | 238 | struct urb *control_urb; |
0de9a702 | 239 | struct usb_ctrlrequest *dr; |
3f542974 PS |
240 | char *ctrl_buf; |
241 | int MsrLsr; | |
242 | ||
0de9a702 | 243 | spinlock_t pool_lock; |
3f542974 | 244 | struct urb *write_urb_pool[NUM_URBS]; |
0de9a702 | 245 | char busy[NUM_URBS]; |
50de36f7 | 246 | bool read_urb_busy; |
3f542974 | 247 | |
0eafe4de D |
248 | /* For device(s) with LED indicator */ |
249 | bool has_led; | |
250 | bool led_flag; | |
251 | struct timer_list led_timer1; /* Timer for LED on */ | |
252 | struct timer_list led_timer2; /* Timer for LED off */ | |
253 | }; | |
3f542974 | 254 | |
90ab5ee9 | 255 | static bool debug; |
3f542974 PS |
256 | |
257 | /* | |
258 | * mos7840_set_reg_sync | |
259 | * To set the Control register by calling usb_fill_control_urb function | |
260 | * by passing usb_sndctrlpipe function as parameter. | |
261 | */ | |
262 | ||
263 | static int mos7840_set_reg_sync(struct usb_serial_port *port, __u16 reg, | |
264 | __u16 val) | |
265 | { | |
266 | struct usb_device *dev = port->serial->dev; | |
267 | val = val & 0x00ff; | |
84fe6e79 | 268 | dbg("mos7840_set_reg_sync offset is %x, value %x", reg, val); |
3f542974 PS |
269 | |
270 | return usb_control_msg(dev, usb_sndctrlpipe(dev, 0), MCS_WRREQ, | |
271 | MCS_WR_RTYPE, val, reg, NULL, 0, | |
272 | MOS_WDR_TIMEOUT); | |
273 | } | |
274 | ||
275 | /* | |
276 | * mos7840_get_reg_sync | |
277 | * To set the Uart register by calling usb_fill_control_urb function by | |
278 | * passing usb_rcvctrlpipe function as parameter. | |
279 | */ | |
280 | ||
281 | static int mos7840_get_reg_sync(struct usb_serial_port *port, __u16 reg, | |
880af9db | 282 | __u16 *val) |
3f542974 PS |
283 | { |
284 | struct usb_device *dev = port->serial->dev; | |
285 | int ret = 0; | |
9e221a35 JH |
286 | u8 *buf; |
287 | ||
288 | buf = kmalloc(VENDOR_READ_LENGTH, GFP_KERNEL); | |
289 | if (!buf) | |
290 | return -ENOMEM; | |
3f542974 PS |
291 | |
292 | ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), MCS_RDREQ, | |
9e221a35 | 293 | MCS_RD_RTYPE, 0, reg, buf, VENDOR_READ_LENGTH, |
3f542974 | 294 | MOS_WDR_TIMEOUT); |
9e221a35 | 295 | *val = buf[0]; |
84fe6e79 | 296 | dbg("mos7840_get_reg_sync offset is %x, return val %x", reg, *val); |
9e221a35 JH |
297 | |
298 | kfree(buf); | |
3f542974 PS |
299 | return ret; |
300 | } | |
301 | ||
302 | /* | |
303 | * mos7840_set_uart_reg | |
304 | * To set the Uart register by calling usb_fill_control_urb function by | |
305 | * passing usb_sndctrlpipe function as parameter. | |
306 | */ | |
307 | ||
308 | static int mos7840_set_uart_reg(struct usb_serial_port *port, __u16 reg, | |
309 | __u16 val) | |
310 | { | |
311 | ||
312 | struct usb_device *dev = port->serial->dev; | |
313 | val = val & 0x00ff; | |
880af9db AC |
314 | /* For the UART control registers, the application number need |
315 | to be Or'ed */ | |
0de9a702 | 316 | if (port->serial->num_ports == 4) { |
880af9db AC |
317 | val |= (((__u16) port->number - |
318 | (__u16) (port->serial->minor)) + 1) << 8; | |
84fe6e79 | 319 | dbg("mos7840_set_uart_reg application number is %x", val); |
3f542974 PS |
320 | } else { |
321 | if (((__u16) port->number - (__u16) (port->serial->minor)) == 0) { | |
880af9db | 322 | val |= (((__u16) port->number - |
3f542974 | 323 | (__u16) (port->serial->minor)) + 1) << 8; |
84fe6e79 | 324 | dbg("mos7840_set_uart_reg application number is %x", |
3f542974 PS |
325 | val); |
326 | } else { | |
327 | val |= | |
328 | (((__u16) port->number - | |
329 | (__u16) (port->serial->minor)) + 2) << 8; | |
84fe6e79 | 330 | dbg("mos7840_set_uart_reg application number is %x", |
3f542974 PS |
331 | val); |
332 | } | |
333 | } | |
334 | return usb_control_msg(dev, usb_sndctrlpipe(dev, 0), MCS_WRREQ, | |
335 | MCS_WR_RTYPE, val, reg, NULL, 0, | |
336 | MOS_WDR_TIMEOUT); | |
337 | ||
338 | } | |
339 | ||
340 | /* | |
341 | * mos7840_get_uart_reg | |
342 | * To set the Control register by calling usb_fill_control_urb function | |
343 | * by passing usb_rcvctrlpipe function as parameter. | |
344 | */ | |
345 | static int mos7840_get_uart_reg(struct usb_serial_port *port, __u16 reg, | |
880af9db | 346 | __u16 *val) |
3f542974 PS |
347 | { |
348 | struct usb_device *dev = port->serial->dev; | |
349 | int ret = 0; | |
350 | __u16 Wval; | |
9e221a35 JH |
351 | u8 *buf; |
352 | ||
353 | buf = kmalloc(VENDOR_READ_LENGTH, GFP_KERNEL); | |
354 | if (!buf) | |
355 | return -ENOMEM; | |
3f542974 | 356 | |
84fe6e79 | 357 | /* dbg("application number is %4x", |
880af9db AC |
358 | (((__u16)port->number - (__u16)(port->serial->minor))+1)<<8); */ |
359 | /* Wval is same as application number */ | |
0de9a702 | 360 | if (port->serial->num_ports == 4) { |
3f542974 PS |
361 | Wval = |
362 | (((__u16) port->number - (__u16) (port->serial->minor)) + | |
363 | 1) << 8; | |
84fe6e79 | 364 | dbg("mos7840_get_uart_reg application number is %x", Wval); |
3f542974 PS |
365 | } else { |
366 | if (((__u16) port->number - (__u16) (port->serial->minor)) == 0) { | |
880af9db | 367 | Wval = (((__u16) port->number - |
3f542974 | 368 | (__u16) (port->serial->minor)) + 1) << 8; |
84fe6e79 | 369 | dbg("mos7840_get_uart_reg application number is %x", |
3f542974 PS |
370 | Wval); |
371 | } else { | |
880af9db | 372 | Wval = (((__u16) port->number - |
3f542974 | 373 | (__u16) (port->serial->minor)) + 2) << 8; |
84fe6e79 | 374 | dbg("mos7840_get_uart_reg application number is %x", |
3f542974 PS |
375 | Wval); |
376 | } | |
377 | } | |
378 | ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), MCS_RDREQ, | |
9e221a35 | 379 | MCS_RD_RTYPE, Wval, reg, buf, VENDOR_READ_LENGTH, |
3f542974 | 380 | MOS_WDR_TIMEOUT); |
9e221a35 JH |
381 | *val = buf[0]; |
382 | ||
383 | kfree(buf); | |
3f542974 PS |
384 | return ret; |
385 | } | |
386 | ||
387 | static void mos7840_dump_serial_port(struct moschip_port *mos7840_port) | |
388 | { | |
389 | ||
84fe6e79 TC |
390 | dbg("***************************************"); |
391 | dbg("SpRegOffset is %2x", mos7840_port->SpRegOffset); | |
392 | dbg("ControlRegOffset is %2x", mos7840_port->ControlRegOffset); | |
393 | dbg("DCRRegOffset is %2x", mos7840_port->DcrRegOffset); | |
394 | dbg("***************************************"); | |
3f542974 PS |
395 | |
396 | } | |
397 | ||
398 | /************************************************************************/ | |
399 | /************************************************************************/ | |
400 | /* I N T E R F A C E F U N C T I O N S */ | |
401 | /* I N T E R F A C E F U N C T I O N S */ | |
402 | /************************************************************************/ | |
403 | /************************************************************************/ | |
404 | ||
405 | static inline void mos7840_set_port_private(struct usb_serial_port *port, | |
406 | struct moschip_port *data) | |
407 | { | |
408 | usb_set_serial_port_data(port, (void *)data); | |
409 | } | |
410 | ||
411 | static inline struct moschip_port *mos7840_get_port_private(struct | |
412 | usb_serial_port | |
413 | *port) | |
414 | { | |
415 | return (struct moschip_port *)usb_get_serial_port_data(port); | |
416 | } | |
417 | ||
0de9a702 | 418 | static void mos7840_handle_new_msr(struct moschip_port *port, __u8 new_msr) |
3f542974 PS |
419 | { |
420 | struct moschip_port *mos7840_port; | |
421 | struct async_icount *icount; | |
422 | mos7840_port = port; | |
423 | icount = &mos7840_port->icount; | |
424 | if (new_msr & | |
425 | (MOS_MSR_DELTA_CTS | MOS_MSR_DELTA_DSR | MOS_MSR_DELTA_RI | | |
426 | MOS_MSR_DELTA_CD)) { | |
427 | icount = &mos7840_port->icount; | |
428 | ||
429 | /* update input line counters */ | |
430 | if (new_msr & MOS_MSR_DELTA_CTS) { | |
431 | icount->cts++; | |
0de9a702 | 432 | smp_wmb(); |
3f542974 PS |
433 | } |
434 | if (new_msr & MOS_MSR_DELTA_DSR) { | |
435 | icount->dsr++; | |
0de9a702 | 436 | smp_wmb(); |
3f542974 PS |
437 | } |
438 | if (new_msr & MOS_MSR_DELTA_CD) { | |
439 | icount->dcd++; | |
0de9a702 | 440 | smp_wmb(); |
3f542974 PS |
441 | } |
442 | if (new_msr & MOS_MSR_DELTA_RI) { | |
443 | icount->rng++; | |
0de9a702 | 444 | smp_wmb(); |
3f542974 PS |
445 | } |
446 | } | |
3f542974 PS |
447 | } |
448 | ||
0de9a702 | 449 | static void mos7840_handle_new_lsr(struct moschip_port *port, __u8 new_lsr) |
3f542974 PS |
450 | { |
451 | struct async_icount *icount; | |
452 | ||
441b62c1 | 453 | dbg("%s - %02x", __func__, new_lsr); |
3f542974 PS |
454 | |
455 | if (new_lsr & SERIAL_LSR_BI) { | |
880af9db AC |
456 | /* |
457 | * Parity and Framing errors only count if they | |
458 | * occur exclusive of a break being | |
459 | * received. | |
460 | */ | |
3f542974 PS |
461 | new_lsr &= (__u8) (SERIAL_LSR_OE | SERIAL_LSR_BI); |
462 | } | |
463 | ||
464 | /* update input line counters */ | |
465 | icount = &port->icount; | |
466 | if (new_lsr & SERIAL_LSR_BI) { | |
467 | icount->brk++; | |
0de9a702 | 468 | smp_wmb(); |
3f542974 PS |
469 | } |
470 | if (new_lsr & SERIAL_LSR_OE) { | |
471 | icount->overrun++; | |
0de9a702 | 472 | smp_wmb(); |
3f542974 PS |
473 | } |
474 | if (new_lsr & SERIAL_LSR_PE) { | |
475 | icount->parity++; | |
0de9a702 | 476 | smp_wmb(); |
3f542974 PS |
477 | } |
478 | if (new_lsr & SERIAL_LSR_FE) { | |
479 | icount->frame++; | |
0de9a702 | 480 | smp_wmb(); |
3f542974 | 481 | } |
3f542974 PS |
482 | } |
483 | ||
484 | /************************************************************************/ | |
485 | /************************************************************************/ | |
486 | /* U S B C A L L B A C K F U N C T I O N S */ | |
487 | /* U S B C A L L B A C K F U N C T I O N S */ | |
488 | /************************************************************************/ | |
489 | /************************************************************************/ | |
490 | ||
7d12e780 | 491 | static void mos7840_control_callback(struct urb *urb) |
3f542974 PS |
492 | { |
493 | unsigned char *data; | |
494 | struct moschip_port *mos7840_port; | |
495 | __u8 regval = 0x0; | |
0de9a702 | 496 | int result = 0; |
0643c724 | 497 | int status = urb->status; |
3f542974 | 498 | |
cdc97792 | 499 | mos7840_port = urb->context; |
0de9a702 | 500 | |
0643c724 | 501 | switch (status) { |
3f542974 PS |
502 | case 0: |
503 | /* success */ | |
504 | break; | |
505 | case -ECONNRESET: | |
506 | case -ENOENT: | |
507 | case -ESHUTDOWN: | |
508 | /* this urb is terminated, clean up */ | |
441b62c1 | 509 | dbg("%s - urb shutting down with status: %d", __func__, |
0643c724 | 510 | status); |
3f542974 PS |
511 | return; |
512 | default: | |
441b62c1 | 513 | dbg("%s - nonzero urb status received: %d", __func__, |
0643c724 | 514 | status); |
3f542974 PS |
515 | goto exit; |
516 | } | |
517 | ||
84fe6e79 TC |
518 | dbg("%s urb buffer size is %d", __func__, urb->actual_length); |
519 | dbg("%s mos7840_port->MsrLsr is %d port %d", __func__, | |
3f542974 PS |
520 | mos7840_port->MsrLsr, mos7840_port->port_num); |
521 | data = urb->transfer_buffer; | |
522 | regval = (__u8) data[0]; | |
84fe6e79 | 523 | dbg("%s data is %x", __func__, regval); |
3f542974 PS |
524 | if (mos7840_port->MsrLsr == 0) |
525 | mos7840_handle_new_msr(mos7840_port, regval); | |
526 | else if (mos7840_port->MsrLsr == 1) | |
527 | mos7840_handle_new_lsr(mos7840_port, regval); | |
528 | ||
0de9a702 ON |
529 | exit: |
530 | spin_lock(&mos7840_port->pool_lock); | |
531 | if (!mos7840_port->zombie) | |
532 | result = usb_submit_urb(mos7840_port->int_urb, GFP_ATOMIC); | |
533 | spin_unlock(&mos7840_port->pool_lock); | |
534 | if (result) { | |
535 | dev_err(&urb->dev->dev, | |
536 | "%s - Error %d submitting interrupt urb\n", | |
441b62c1 | 537 | __func__, result); |
0de9a702 | 538 | } |
3f542974 PS |
539 | } |
540 | ||
541 | static int mos7840_get_reg(struct moschip_port *mcs, __u16 Wval, __u16 reg, | |
880af9db | 542 | __u16 *val) |
3f542974 PS |
543 | { |
544 | struct usb_device *dev = mcs->port->serial->dev; | |
0de9a702 ON |
545 | struct usb_ctrlrequest *dr = mcs->dr; |
546 | unsigned char *buffer = mcs->ctrl_buf; | |
547 | int ret; | |
3f542974 | 548 | |
3f542974 PS |
549 | dr->bRequestType = MCS_RD_RTYPE; |
550 | dr->bRequest = MCS_RDREQ; | |
880af9db | 551 | dr->wValue = cpu_to_le16(Wval); /* 0 */ |
3f542974 PS |
552 | dr->wIndex = cpu_to_le16(reg); |
553 | dr->wLength = cpu_to_le16(2); | |
554 | ||
555 | usb_fill_control_urb(mcs->control_urb, dev, usb_rcvctrlpipe(dev, 0), | |
556 | (unsigned char *)dr, buffer, 2, | |
557 | mos7840_control_callback, mcs); | |
558 | mcs->control_urb->transfer_buffer_length = 2; | |
559 | ret = usb_submit_urb(mcs->control_urb, GFP_ATOMIC); | |
560 | return ret; | |
561 | } | |
562 | ||
0eafe4de D |
563 | static void mos7840_set_led_callback(struct urb *urb) |
564 | { | |
565 | switch (urb->status) { | |
566 | case 0: | |
567 | /* Success */ | |
568 | break; | |
569 | case -ECONNRESET: | |
570 | case -ENOENT: | |
571 | case -ESHUTDOWN: | |
572 | /* This urb is terminated, clean up */ | |
573 | dbg("%s - urb shutting down with status: %d", __func__, | |
574 | urb->status); | |
575 | break; | |
576 | default: | |
577 | dbg("%s - nonzero urb status received: %d", __func__, | |
578 | urb->status); | |
579 | } | |
580 | } | |
581 | ||
582 | static void mos7840_set_led_async(struct moschip_port *mcs, __u16 wval, | |
583 | __u16 reg) | |
584 | { | |
585 | struct usb_device *dev = mcs->port->serial->dev; | |
586 | struct usb_ctrlrequest *dr = mcs->dr; | |
587 | ||
588 | dr->bRequestType = MCS_WR_RTYPE; | |
589 | dr->bRequest = MCS_WRREQ; | |
590 | dr->wValue = cpu_to_le16(wval); | |
591 | dr->wIndex = cpu_to_le16(reg); | |
592 | dr->wLength = cpu_to_le16(0); | |
593 | ||
594 | usb_fill_control_urb(mcs->control_urb, dev, usb_sndctrlpipe(dev, 0), | |
595 | (unsigned char *)dr, NULL, 0, mos7840_set_led_callback, NULL); | |
596 | ||
597 | usb_submit_urb(mcs->control_urb, GFP_ATOMIC); | |
598 | } | |
599 | ||
600 | static void mos7840_set_led_sync(struct usb_serial_port *port, __u16 reg, | |
601 | __u16 val) | |
602 | { | |
603 | struct usb_device *dev = port->serial->dev; | |
604 | ||
605 | usb_control_msg(dev, usb_sndctrlpipe(dev, 0), MCS_WRREQ, MCS_WR_RTYPE, | |
606 | val, reg, NULL, 0, MOS_WDR_TIMEOUT); | |
607 | } | |
608 | ||
609 | static void mos7840_led_off(unsigned long arg) | |
610 | { | |
611 | struct moschip_port *mcs = (struct moschip_port *) arg; | |
612 | ||
613 | /* Turn off LED */ | |
614 | mos7840_set_led_async(mcs, 0x0300, MODEM_CONTROL_REGISTER); | |
615 | mod_timer(&mcs->led_timer2, | |
616 | jiffies + msecs_to_jiffies(LED_OFF_MS)); | |
617 | } | |
618 | ||
619 | static void mos7840_led_flag_off(unsigned long arg) | |
620 | { | |
621 | struct moschip_port *mcs = (struct moschip_port *) arg; | |
622 | ||
623 | mcs->led_flag = false; | |
624 | } | |
625 | ||
3f542974 PS |
626 | /***************************************************************************** |
627 | * mos7840_interrupt_callback | |
628 | * this is the callback function for when we have received data on the | |
629 | * interrupt endpoint. | |
630 | *****************************************************************************/ | |
631 | ||
7d12e780 | 632 | static void mos7840_interrupt_callback(struct urb *urb) |
3f542974 PS |
633 | { |
634 | int result; | |
635 | int length; | |
636 | struct moschip_port *mos7840_port; | |
637 | struct usb_serial *serial; | |
638 | __u16 Data; | |
639 | unsigned char *data; | |
640 | __u8 sp[5], st; | |
0de9a702 ON |
641 | int i, rv = 0; |
642 | __u16 wval, wreg = 0; | |
0643c724 | 643 | int status = urb->status; |
3f542974 | 644 | |
0643c724 | 645 | switch (status) { |
3f542974 PS |
646 | case 0: |
647 | /* success */ | |
648 | break; | |
649 | case -ECONNRESET: | |
650 | case -ENOENT: | |
651 | case -ESHUTDOWN: | |
652 | /* this urb is terminated, clean up */ | |
441b62c1 | 653 | dbg("%s - urb shutting down with status: %d", __func__, |
0643c724 | 654 | status); |
3f542974 PS |
655 | return; |
656 | default: | |
441b62c1 | 657 | dbg("%s - nonzero urb status received: %d", __func__, |
0643c724 | 658 | status); |
3f542974 PS |
659 | goto exit; |
660 | } | |
661 | ||
662 | length = urb->actual_length; | |
663 | data = urb->transfer_buffer; | |
664 | ||
cdc97792 | 665 | serial = urb->context; |
3f542974 PS |
666 | |
667 | /* Moschip get 5 bytes | |
668 | * Byte 1 IIR Port 1 (port.number is 0) | |
669 | * Byte 2 IIR Port 2 (port.number is 1) | |
670 | * Byte 3 IIR Port 3 (port.number is 2) | |
671 | * Byte 4 IIR Port 4 (port.number is 3) | |
672 | * Byte 5 FIFO status for both */ | |
673 | ||
674 | if (length && length > 5) { | |
84fe6e79 | 675 | dbg("%s", "Wrong data !!!"); |
3f542974 PS |
676 | return; |
677 | } | |
678 | ||
679 | sp[0] = (__u8) data[0]; | |
680 | sp[1] = (__u8) data[1]; | |
681 | sp[2] = (__u8) data[2]; | |
682 | sp[3] = (__u8) data[3]; | |
683 | st = (__u8) data[4]; | |
684 | ||
685 | for (i = 0; i < serial->num_ports; i++) { | |
686 | mos7840_port = mos7840_get_port_private(serial->port[i]); | |
687 | wval = | |
688 | (((__u16) serial->port[i]->number - | |
689 | (__u16) (serial->minor)) + 1) << 8; | |
690 | if (mos7840_port->open) { | |
691 | if (sp[i] & 0x01) { | |
84fe6e79 | 692 | dbg("SP%d No Interrupt !!!", i); |
3f542974 PS |
693 | } else { |
694 | switch (sp[i] & 0x0f) { | |
695 | case SERIAL_IIR_RLS: | |
696 | dbg("Serial Port %d: Receiver status error or ", i); | |
84fe6e79 | 697 | dbg("address bit detected in 9-bit mode"); |
3f542974 | 698 | mos7840_port->MsrLsr = 1; |
0de9a702 | 699 | wreg = LINE_STATUS_REGISTER; |
3f542974 PS |
700 | break; |
701 | case SERIAL_IIR_MS: | |
84fe6e79 | 702 | dbg("Serial Port %d: Modem status change", i); |
3f542974 | 703 | mos7840_port->MsrLsr = 0; |
0de9a702 | 704 | wreg = MODEM_STATUS_REGISTER; |
3f542974 PS |
705 | break; |
706 | } | |
0de9a702 ON |
707 | spin_lock(&mos7840_port->pool_lock); |
708 | if (!mos7840_port->zombie) { | |
709 | rv = mos7840_get_reg(mos7840_port, wval, wreg, &Data); | |
710 | } else { | |
711 | spin_unlock(&mos7840_port->pool_lock); | |
712 | return; | |
713 | } | |
714 | spin_unlock(&mos7840_port->pool_lock); | |
3f542974 PS |
715 | } |
716 | } | |
717 | } | |
880af9db AC |
718 | if (!(rv < 0)) |
719 | /* the completion handler for the control urb will resubmit */ | |
0de9a702 ON |
720 | return; |
721 | exit: | |
3f542974 PS |
722 | result = usb_submit_urb(urb, GFP_ATOMIC); |
723 | if (result) { | |
724 | dev_err(&urb->dev->dev, | |
725 | "%s - Error %d submitting interrupt urb\n", | |
441b62c1 | 726 | __func__, result); |
3f542974 | 727 | } |
3f542974 PS |
728 | } |
729 | ||
730 | static int mos7840_port_paranoia_check(struct usb_serial_port *port, | |
731 | const char *function) | |
732 | { | |
733 | if (!port) { | |
734 | dbg("%s - port == NULL", function); | |
735 | return -1; | |
736 | } | |
737 | if (!port->serial) { | |
738 | dbg("%s - port->serial == NULL", function); | |
739 | return -1; | |
740 | } | |
741 | ||
742 | return 0; | |
743 | } | |
744 | ||
745 | /* Inline functions to check the sanity of a pointer that is passed to us */ | |
746 | static int mos7840_serial_paranoia_check(struct usb_serial *serial, | |
747 | const char *function) | |
748 | { | |
749 | if (!serial) { | |
750 | dbg("%s - serial == NULL", function); | |
751 | return -1; | |
752 | } | |
753 | if (!serial->type) { | |
754 | dbg("%s - serial->type == NULL!", function); | |
755 | return -1; | |
756 | } | |
757 | ||
758 | return 0; | |
759 | } | |
760 | ||
761 | static struct usb_serial *mos7840_get_usb_serial(struct usb_serial_port *port, | |
762 | const char *function) | |
763 | { | |
764 | /* if no port was specified, or it fails a paranoia check */ | |
765 | if (!port || | |
766 | mos7840_port_paranoia_check(port, function) || | |
767 | mos7840_serial_paranoia_check(port->serial, function)) { | |
880af9db AC |
768 | /* then say that we don't have a valid usb_serial thing, |
769 | * which will end up genrating -ENODEV return values */ | |
3f542974 PS |
770 | return NULL; |
771 | } | |
772 | ||
773 | return port->serial; | |
774 | } | |
775 | ||
776 | /***************************************************************************** | |
777 | * mos7840_bulk_in_callback | |
778 | * this is the callback function for when we have received data on the | |
779 | * bulk in endpoint. | |
780 | *****************************************************************************/ | |
781 | ||
7d12e780 | 782 | static void mos7840_bulk_in_callback(struct urb *urb) |
3f542974 | 783 | { |
0643c724 | 784 | int retval; |
3f542974 PS |
785 | unsigned char *data; |
786 | struct usb_serial *serial; | |
787 | struct usb_serial_port *port; | |
788 | struct moschip_port *mos7840_port; | |
789 | struct tty_struct *tty; | |
0643c724 | 790 | int status = urb->status; |
3f542974 | 791 | |
cdc97792 | 792 | mos7840_port = urb->context; |
3f542974 | 793 | if (!mos7840_port) { |
84fe6e79 | 794 | dbg("%s", "NULL mos7840_port pointer"); |
50de36f7 GKH |
795 | return; |
796 | } | |
797 | ||
798 | if (status) { | |
799 | dbg("nonzero read bulk status received: %d", status); | |
800 | mos7840_port->read_urb_busy = false; | |
3f542974 PS |
801 | return; |
802 | } | |
803 | ||
804 | port = (struct usb_serial_port *)mos7840_port->port; | |
441b62c1 | 805 | if (mos7840_port_paranoia_check(port, __func__)) { |
84fe6e79 | 806 | dbg("%s", "Port Paranoia failed"); |
50de36f7 | 807 | mos7840_port->read_urb_busy = false; |
3f542974 PS |
808 | return; |
809 | } | |
810 | ||
441b62c1 | 811 | serial = mos7840_get_usb_serial(port, __func__); |
3f542974 | 812 | if (!serial) { |
84fe6e79 | 813 | dbg("%s", "Bad serial pointer"); |
50de36f7 | 814 | mos7840_port->read_urb_busy = false; |
3f542974 PS |
815 | return; |
816 | } | |
817 | ||
3f542974 PS |
818 | data = urb->transfer_buffer; |
819 | ||
3f542974 | 820 | if (urb->actual_length) { |
4a90f09b | 821 | tty = tty_port_tty_get(&mos7840_port->port->port); |
3f542974 | 822 | if (tty) { |
3f542974 | 823 | tty_insert_flip_string(tty, data, urb->actual_length); |
84fe6e79 | 824 | dbg(" %s ", data); |
3f542974 | 825 | tty_flip_buffer_push(tty); |
4a90f09b | 826 | tty_kref_put(tty); |
3f542974 PS |
827 | } |
828 | mos7840_port->icount.rx += urb->actual_length; | |
0de9a702 | 829 | smp_wmb(); |
84fe6e79 | 830 | dbg("mos7840_port->icount.rx is %d:", |
3f542974 PS |
831 | mos7840_port->icount.rx); |
832 | } | |
833 | ||
834 | if (!mos7840_port->read_urb) { | |
84fe6e79 | 835 | dbg("%s", "URB KILLED !!!"); |
50de36f7 | 836 | mos7840_port->read_urb_busy = false; |
3f542974 PS |
837 | return; |
838 | } | |
839 | ||
0eafe4de D |
840 | /* Turn on LED */ |
841 | if (mos7840_port->has_led && !mos7840_port->led_flag) { | |
842 | mos7840_port->led_flag = true; | |
843 | mos7840_set_led_async(mos7840_port, 0x0301, | |
844 | MODEM_CONTROL_REGISTER); | |
845 | mod_timer(&mos7840_port->led_timer1, | |
846 | jiffies + msecs_to_jiffies(LED_ON_MS)); | |
847 | } | |
3f542974 | 848 | |
50de36f7 | 849 | mos7840_port->read_urb_busy = true; |
0643c724 | 850 | retval = usb_submit_urb(mos7840_port->read_urb, GFP_ATOMIC); |
0de9a702 | 851 | |
0643c724 | 852 | if (retval) { |
50de36f7 GKH |
853 | dbg("usb_submit_urb(read bulk) failed, retval = %d", retval); |
854 | mos7840_port->read_urb_busy = false; | |
3f542974 PS |
855 | } |
856 | } | |
857 | ||
858 | /***************************************************************************** | |
859 | * mos7840_bulk_out_data_callback | |
880af9db AC |
860 | * this is the callback function for when we have finished sending |
861 | * serial data on the bulk out endpoint. | |
3f542974 PS |
862 | *****************************************************************************/ |
863 | ||
7d12e780 | 864 | static void mos7840_bulk_out_data_callback(struct urb *urb) |
3f542974 PS |
865 | { |
866 | struct moschip_port *mos7840_port; | |
867 | struct tty_struct *tty; | |
0643c724 | 868 | int status = urb->status; |
0de9a702 ON |
869 | int i; |
870 | ||
cdc97792 | 871 | mos7840_port = urb->context; |
0de9a702 ON |
872 | spin_lock(&mos7840_port->pool_lock); |
873 | for (i = 0; i < NUM_URBS; i++) { | |
874 | if (urb == mos7840_port->write_urb_pool[i]) { | |
875 | mos7840_port->busy[i] = 0; | |
876 | break; | |
877 | } | |
878 | } | |
879 | spin_unlock(&mos7840_port->pool_lock); | |
880 | ||
0643c724 | 881 | if (status) { |
84fe6e79 | 882 | dbg("nonzero write bulk status received:%d", status); |
3f542974 PS |
883 | return; |
884 | } | |
885 | ||
441b62c1 | 886 | if (mos7840_port_paranoia_check(mos7840_port->port, __func__)) { |
84fe6e79 | 887 | dbg("%s", "Port Paranoia failed"); |
3f542974 PS |
888 | return; |
889 | } | |
890 | ||
4a90f09b | 891 | tty = tty_port_tty_get(&mos7840_port->port->port); |
b963a844 JS |
892 | if (tty && mos7840_port->open) |
893 | tty_wakeup(tty); | |
4a90f09b | 894 | tty_kref_put(tty); |
3f542974 PS |
895 | |
896 | } | |
897 | ||
898 | /************************************************************************/ | |
899 | /* 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 */ | |
900 | /************************************************************************/ | |
901 | #ifdef MCSSerialProbe | |
902 | static int mos7840_serial_probe(struct usb_serial *serial, | |
903 | const struct usb_device_id *id) | |
904 | { | |
905 | ||
906 | /*need to implement the mode_reg reading and updating\ | |
907 | structures usb_serial_ device_type\ | |
908 | (i.e num_ports, num_bulkin,bulkout etc) */ | |
909 | /* Also we can update the changes attach */ | |
910 | return 1; | |
911 | } | |
912 | #endif | |
913 | ||
914 | /***************************************************************************** | |
915 | * mos7840_open | |
916 | * this function is called by the tty driver when a port is opened | |
917 | * If successful, we return 0 | |
918 | * Otherwise we return a negative error number. | |
919 | *****************************************************************************/ | |
920 | ||
a509a7e4 | 921 | static int mos7840_open(struct tty_struct *tty, struct usb_serial_port *port) |
3f542974 PS |
922 | { |
923 | int response; | |
924 | int j; | |
925 | struct usb_serial *serial; | |
926 | struct urb *urb; | |
927 | __u16 Data; | |
928 | int status; | |
929 | struct moschip_port *mos7840_port; | |
0de9a702 | 930 | struct moschip_port *port0; |
3f542974 | 931 | |
441b62c1 | 932 | if (mos7840_port_paranoia_check(port, __func__)) { |
84fe6e79 | 933 | dbg("%s", "Port Paranoia failed"); |
3f542974 PS |
934 | return -ENODEV; |
935 | } | |
936 | ||
3f542974 PS |
937 | serial = port->serial; |
938 | ||
441b62c1 | 939 | if (mos7840_serial_paranoia_check(serial, __func__)) { |
84fe6e79 | 940 | dbg("%s", "Serial Paranoia failed"); |
3f542974 PS |
941 | return -ENODEV; |
942 | } | |
943 | ||
944 | mos7840_port = mos7840_get_port_private(port); | |
0de9a702 | 945 | port0 = mos7840_get_port_private(serial->port[0]); |
3f542974 | 946 | |
0de9a702 | 947 | if (mos7840_port == NULL || port0 == NULL) |
3f542974 PS |
948 | return -ENODEV; |
949 | ||
950 | usb_clear_halt(serial->dev, port->write_urb->pipe); | |
951 | usb_clear_halt(serial->dev, port->read_urb->pipe); | |
0de9a702 | 952 | port0->open_ports++; |
3f542974 PS |
953 | |
954 | /* Initialising the write urb pool */ | |
955 | for (j = 0; j < NUM_URBS; ++j) { | |
0de9a702 | 956 | urb = usb_alloc_urb(0, GFP_KERNEL); |
3f542974 PS |
957 | mos7840_port->write_urb_pool[j] = urb; |
958 | ||
959 | if (urb == NULL) { | |
194343d9 | 960 | dev_err(&port->dev, "No more urbs???\n"); |
3f542974 PS |
961 | continue; |
962 | } | |
963 | ||
880af9db AC |
964 | urb->transfer_buffer = kmalloc(URB_TRANSFER_BUFFER_SIZE, |
965 | GFP_KERNEL); | |
3f542974 | 966 | if (!urb->transfer_buffer) { |
0de9a702 ON |
967 | usb_free_urb(urb); |
968 | mos7840_port->write_urb_pool[j] = NULL; | |
194343d9 GKH |
969 | dev_err(&port->dev, |
970 | "%s-out of memory for urb buffers.\n", | |
971 | __func__); | |
3f542974 PS |
972 | continue; |
973 | } | |
974 | } | |
975 | ||
976 | /***************************************************************************** | |
977 | * Initialize MCS7840 -- Write Init values to corresponding Registers | |
978 | * | |
979 | * Register Index | |
980 | * 1 : IER | |
981 | * 2 : FCR | |
982 | * 3 : LCR | |
983 | * 4 : MCR | |
984 | * | |
985 | * 0x08 : SP1/2 Control Reg | |
986 | *****************************************************************************/ | |
987 | ||
880af9db | 988 | /* NEED to check the following Block */ |
3f542974 | 989 | |
3f542974 PS |
990 | Data = 0x0; |
991 | status = mos7840_get_reg_sync(port, mos7840_port->SpRegOffset, &Data); | |
992 | if (status < 0) { | |
84fe6e79 | 993 | dbg("Reading Spreg failed"); |
3f542974 PS |
994 | return -1; |
995 | } | |
996 | Data |= 0x80; | |
997 | status = mos7840_set_reg_sync(port, mos7840_port->SpRegOffset, Data); | |
998 | if (status < 0) { | |
84fe6e79 | 999 | dbg("writing Spreg failed"); |
3f542974 PS |
1000 | return -1; |
1001 | } | |
1002 | ||
1003 | Data &= ~0x80; | |
1004 | status = mos7840_set_reg_sync(port, mos7840_port->SpRegOffset, Data); | |
1005 | if (status < 0) { | |
84fe6e79 | 1006 | dbg("writing Spreg failed"); |
3f542974 PS |
1007 | return -1; |
1008 | } | |
880af9db | 1009 | /* End of block to be checked */ |
3f542974 | 1010 | |
3f542974 | 1011 | Data = 0x0; |
880af9db AC |
1012 | status = mos7840_get_reg_sync(port, mos7840_port->ControlRegOffset, |
1013 | &Data); | |
3f542974 | 1014 | if (status < 0) { |
84fe6e79 | 1015 | dbg("Reading Controlreg failed"); |
3f542974 PS |
1016 | return -1; |
1017 | } | |
880af9db AC |
1018 | Data |= 0x08; /* Driver done bit */ |
1019 | Data |= 0x20; /* rx_disable */ | |
1020 | status = mos7840_set_reg_sync(port, | |
1021 | mos7840_port->ControlRegOffset, Data); | |
3f542974 | 1022 | if (status < 0) { |
84fe6e79 | 1023 | dbg("writing Controlreg failed"); |
3f542974 PS |
1024 | return -1; |
1025 | } | |
880af9db AC |
1026 | /* do register settings here */ |
1027 | /* Set all regs to the device default values. */ | |
1028 | /*********************************** | |
1029 | * First Disable all interrupts. | |
1030 | ***********************************/ | |
3f542974 | 1031 | Data = 0x00; |
3f542974 PS |
1032 | status = mos7840_set_uart_reg(port, INTERRUPT_ENABLE_REGISTER, Data); |
1033 | if (status < 0) { | |
84fe6e79 | 1034 | dbg("disabling interrupts failed"); |
3f542974 PS |
1035 | return -1; |
1036 | } | |
880af9db | 1037 | /* Set FIFO_CONTROL_REGISTER to the default value */ |
3f542974 | 1038 | Data = 0x00; |
3f542974 PS |
1039 | status = mos7840_set_uart_reg(port, FIFO_CONTROL_REGISTER, Data); |
1040 | if (status < 0) { | |
84fe6e79 | 1041 | dbg("Writing FIFO_CONTROL_REGISTER failed"); |
3f542974 PS |
1042 | return -1; |
1043 | } | |
1044 | ||
1045 | Data = 0xcf; | |
3f542974 PS |
1046 | status = mos7840_set_uart_reg(port, FIFO_CONTROL_REGISTER, Data); |
1047 | if (status < 0) { | |
84fe6e79 | 1048 | dbg("Writing FIFO_CONTROL_REGISTER failed"); |
3f542974 PS |
1049 | return -1; |
1050 | } | |
1051 | ||
1052 | Data = 0x03; | |
3f542974 PS |
1053 | status = mos7840_set_uart_reg(port, LINE_CONTROL_REGISTER, Data); |
1054 | mos7840_port->shadowLCR = Data; | |
1055 | ||
1056 | Data = 0x0b; | |
3f542974 PS |
1057 | status = mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, Data); |
1058 | mos7840_port->shadowMCR = Data; | |
1059 | ||
1060 | Data = 0x00; | |
3f542974 PS |
1061 | status = mos7840_get_uart_reg(port, LINE_CONTROL_REGISTER, &Data); |
1062 | mos7840_port->shadowLCR = Data; | |
1063 | ||
880af9db | 1064 | Data |= SERIAL_LCR_DLAB; /* data latch enable in LCR 0x80 */ |
3f542974 PS |
1065 | status = mos7840_set_uart_reg(port, LINE_CONTROL_REGISTER, Data); |
1066 | ||
1067 | Data = 0x0c; | |
3f542974 PS |
1068 | status = mos7840_set_uart_reg(port, DIVISOR_LATCH_LSB, Data); |
1069 | ||
1070 | Data = 0x0; | |
3f542974 PS |
1071 | status = mos7840_set_uart_reg(port, DIVISOR_LATCH_MSB, Data); |
1072 | ||
1073 | Data = 0x00; | |
3f542974 PS |
1074 | status = mos7840_get_uart_reg(port, LINE_CONTROL_REGISTER, &Data); |
1075 | ||
1076 | Data = Data & ~SERIAL_LCR_DLAB; | |
3f542974 PS |
1077 | status = mos7840_set_uart_reg(port, LINE_CONTROL_REGISTER, Data); |
1078 | mos7840_port->shadowLCR = Data; | |
1079 | ||
880af9db | 1080 | /* clearing Bulkin and Bulkout Fifo */ |
3f542974 | 1081 | Data = 0x0; |
3f542974 PS |
1082 | status = mos7840_get_reg_sync(port, mos7840_port->SpRegOffset, &Data); |
1083 | ||
1084 | Data = Data | 0x0c; | |
3f542974 PS |
1085 | status = mos7840_set_reg_sync(port, mos7840_port->SpRegOffset, Data); |
1086 | ||
1087 | Data = Data & ~0x0c; | |
3f542974 | 1088 | status = mos7840_set_reg_sync(port, mos7840_port->SpRegOffset, Data); |
880af9db | 1089 | /* Finally enable all interrupts */ |
3f542974 | 1090 | Data = 0x0c; |
3f542974 PS |
1091 | status = mos7840_set_uart_reg(port, INTERRUPT_ENABLE_REGISTER, Data); |
1092 | ||
880af9db | 1093 | /* clearing rx_disable */ |
3f542974 | 1094 | Data = 0x0; |
880af9db AC |
1095 | status = mos7840_get_reg_sync(port, mos7840_port->ControlRegOffset, |
1096 | &Data); | |
3f542974 | 1097 | Data = Data & ~0x20; |
880af9db AC |
1098 | status = mos7840_set_reg_sync(port, mos7840_port->ControlRegOffset, |
1099 | Data); | |
3f542974 | 1100 | |
880af9db | 1101 | /* rx_negate */ |
3f542974 | 1102 | Data = 0x0; |
880af9db AC |
1103 | status = mos7840_get_reg_sync(port, mos7840_port->ControlRegOffset, |
1104 | &Data); | |
3f542974 | 1105 | Data = Data | 0x10; |
880af9db AC |
1106 | status = mos7840_set_reg_sync(port, mos7840_port->ControlRegOffset, |
1107 | Data); | |
3f542974 | 1108 | |
880af9db AC |
1109 | /* Check to see if we've set up our endpoint info yet * |
1110 | * (can't set it up in mos7840_startup as the structures * | |
1111 | * were not set up at that time.) */ | |
0de9a702 | 1112 | if (port0->open_ports == 1) { |
3f542974 | 1113 | if (serial->port[0]->interrupt_in_buffer == NULL) { |
3f542974 | 1114 | /* set up interrupt urb */ |
3f542974 | 1115 | usb_fill_int_urb(serial->port[0]->interrupt_in_urb, |
880af9db AC |
1116 | serial->dev, |
1117 | usb_rcvintpipe(serial->dev, | |
1118 | serial->port[0]->interrupt_in_endpointAddress), | |
1119 | serial->port[0]->interrupt_in_buffer, | |
1120 | serial->port[0]->interrupt_in_urb-> | |
1121 | transfer_buffer_length, | |
1122 | mos7840_interrupt_callback, | |
1123 | serial, | |
1124 | serial->port[0]->interrupt_in_urb->interval); | |
3f542974 PS |
1125 | |
1126 | /* start interrupt read for mos7840 * | |
1127 | * will continue as long as mos7840 is connected */ | |
1128 | ||
1129 | response = | |
1130 | usb_submit_urb(serial->port[0]->interrupt_in_urb, | |
1131 | GFP_KERNEL); | |
1132 | if (response) { | |
194343d9 GKH |
1133 | dev_err(&port->dev, "%s - Error %d submitting " |
1134 | "interrupt urb\n", __func__, response); | |
3f542974 PS |
1135 | } |
1136 | ||
1137 | } | |
1138 | ||
1139 | } | |
1140 | ||
1141 | /* see if we've set up our endpoint info yet * | |
1142 | * (can't set it up in mos7840_startup as the * | |
1143 | * structures were not set up at that time.) */ | |
1144 | ||
84fe6e79 TC |
1145 | dbg("port number is %d", port->number); |
1146 | dbg("serial number is %d", port->serial->minor); | |
1147 | dbg("Bulkin endpoint is %d", port->bulk_in_endpointAddress); | |
1148 | dbg("BulkOut endpoint is %d", port->bulk_out_endpointAddress); | |
1149 | dbg("Interrupt endpoint is %d", port->interrupt_in_endpointAddress); | |
1150 | dbg("port's number in the device is %d", mos7840_port->port_num); | |
3f542974 PS |
1151 | mos7840_port->read_urb = port->read_urb; |
1152 | ||
1153 | /* set up our bulk in urb */ | |
093ea2d3 DL |
1154 | if ((serial->num_ports == 2) |
1155 | && ((((__u16)port->number - | |
1156 | (__u16)(port->serial->minor)) % 2) != 0)) { | |
1157 | usb_fill_bulk_urb(mos7840_port->read_urb, | |
1158 | serial->dev, | |
1159 | usb_rcvbulkpipe(serial->dev, | |
1160 | (port->bulk_in_endpointAddress) + 2), | |
1161 | port->bulk_in_buffer, | |
1162 | mos7840_port->read_urb->transfer_buffer_length, | |
1163 | mos7840_bulk_in_callback, mos7840_port); | |
1164 | } else { | |
1165 | usb_fill_bulk_urb(mos7840_port->read_urb, | |
1166 | serial->dev, | |
1167 | usb_rcvbulkpipe(serial->dev, | |
1168 | port->bulk_in_endpointAddress), | |
1169 | port->bulk_in_buffer, | |
1170 | mos7840_port->read_urb->transfer_buffer_length, | |
1171 | mos7840_bulk_in_callback, mos7840_port); | |
1172 | } | |
3f542974 | 1173 | |
84fe6e79 | 1174 | dbg("mos7840_open: bulkin endpoint is %d", |
3f542974 | 1175 | port->bulk_in_endpointAddress); |
50de36f7 | 1176 | mos7840_port->read_urb_busy = true; |
3f542974 PS |
1177 | response = usb_submit_urb(mos7840_port->read_urb, GFP_KERNEL); |
1178 | if (response) { | |
194343d9 GKH |
1179 | dev_err(&port->dev, "%s - Error %d submitting control urb\n", |
1180 | __func__, response); | |
50de36f7 | 1181 | mos7840_port->read_urb_busy = false; |
3f542974 PS |
1182 | } |
1183 | ||
1184 | /* initialize our wait queues */ | |
1185 | init_waitqueue_head(&mos7840_port->wait_chase); | |
1186 | init_waitqueue_head(&mos7840_port->delta_msr_wait); | |
1187 | ||
1188 | /* initialize our icount structure */ | |
1189 | memset(&(mos7840_port->icount), 0x00, sizeof(mos7840_port->icount)); | |
1190 | ||
1191 | /* initialize our port settings */ | |
880af9db AC |
1192 | /* Must set to enable ints! */ |
1193 | mos7840_port->shadowMCR = MCR_MASTER_IE; | |
3f542974 PS |
1194 | /* send a open port command */ |
1195 | mos7840_port->open = 1; | |
880af9db | 1196 | /* mos7840_change_port_settings(mos7840_port,old_termios); */ |
3f542974 PS |
1197 | mos7840_port->icount.tx = 0; |
1198 | mos7840_port->icount.rx = 0; | |
1199 | ||
84fe6e79 | 1200 | dbg("usb_serial serial:%p mos7840_port:%p\n usb_serial_port port:%p", |
880af9db | 1201 | serial, mos7840_port, port); |
3f542974 PS |
1202 | |
1203 | return 0; | |
3f542974 PS |
1204 | } |
1205 | ||
1206 | /***************************************************************************** | |
1207 | * mos7840_chars_in_buffer | |
1208 | * this function is called by the tty driver when it wants to know how many | |
1209 | * bytes of data we currently have outstanding in the port (data that has | |
1210 | * been written, but hasn't made it out the port yet) | |
1211 | * If successful, we return the number of bytes left to be written in the | |
1212 | * system, | |
95da310e | 1213 | * Otherwise we return zero. |
3f542974 PS |
1214 | *****************************************************************************/ |
1215 | ||
95da310e | 1216 | static int mos7840_chars_in_buffer(struct tty_struct *tty) |
3f542974 | 1217 | { |
95da310e | 1218 | struct usb_serial_port *port = tty->driver_data; |
3f542974 PS |
1219 | int i; |
1220 | int chars = 0; | |
0de9a702 | 1221 | unsigned long flags; |
3f542974 PS |
1222 | struct moschip_port *mos7840_port; |
1223 | ||
441b62c1 | 1224 | if (mos7840_port_paranoia_check(port, __func__)) { |
84fe6e79 | 1225 | dbg("%s", "Invalid port"); |
95da310e | 1226 | return 0; |
3f542974 PS |
1227 | } |
1228 | ||
1229 | mos7840_port = mos7840_get_port_private(port); | |
3363155b | 1230 | if (mos7840_port == NULL) |
95da310e | 1231 | return 0; |
3f542974 | 1232 | |
880af9db | 1233 | spin_lock_irqsave(&mos7840_port->pool_lock, flags); |
5c263b92 MF |
1234 | for (i = 0; i < NUM_URBS; ++i) { |
1235 | if (mos7840_port->busy[i]) { | |
1236 | struct urb *urb = mos7840_port->write_urb_pool[i]; | |
1237 | chars += urb->transfer_buffer_length; | |
1238 | } | |
1239 | } | |
880af9db | 1240 | spin_unlock_irqrestore(&mos7840_port->pool_lock, flags); |
441b62c1 | 1241 | dbg("%s - returns %d", __func__, chars); |
0de9a702 | 1242 | return chars; |
3f542974 PS |
1243 | |
1244 | } | |
1245 | ||
3f542974 PS |
1246 | /***************************************************************************** |
1247 | * mos7840_close | |
1248 | * this function is called by the tty driver when a port is closed | |
1249 | *****************************************************************************/ | |
1250 | ||
335f8514 | 1251 | static void mos7840_close(struct usb_serial_port *port) |
3f542974 PS |
1252 | { |
1253 | struct usb_serial *serial; | |
1254 | struct moschip_port *mos7840_port; | |
0de9a702 | 1255 | struct moschip_port *port0; |
3f542974 PS |
1256 | int j; |
1257 | __u16 Data; | |
1258 | ||
441b62c1 | 1259 | if (mos7840_port_paranoia_check(port, __func__)) { |
84fe6e79 | 1260 | dbg("%s", "Port Paranoia failed"); |
3f542974 PS |
1261 | return; |
1262 | } | |
1263 | ||
441b62c1 | 1264 | serial = mos7840_get_usb_serial(port, __func__); |
3f542974 | 1265 | if (!serial) { |
84fe6e79 | 1266 | dbg("%s", "Serial Paranoia failed"); |
3f542974 PS |
1267 | return; |
1268 | } | |
1269 | ||
1270 | mos7840_port = mos7840_get_port_private(port); | |
0de9a702 | 1271 | port0 = mos7840_get_port_private(serial->port[0]); |
3f542974 | 1272 | |
0de9a702 | 1273 | if (mos7840_port == NULL || port0 == NULL) |
3f542974 | 1274 | return; |
3f542974 PS |
1275 | |
1276 | for (j = 0; j < NUM_URBS; ++j) | |
1277 | usb_kill_urb(mos7840_port->write_urb_pool[j]); | |
1278 | ||
1279 | /* Freeing Write URBs */ | |
1280 | for (j = 0; j < NUM_URBS; ++j) { | |
1281 | if (mos7840_port->write_urb_pool[j]) { | |
1282 | if (mos7840_port->write_urb_pool[j]->transfer_buffer) | |
1283 | kfree(mos7840_port->write_urb_pool[j]-> | |
1284 | transfer_buffer); | |
1285 | ||
1286 | usb_free_urb(mos7840_port->write_urb_pool[j]); | |
1287 | } | |
1288 | } | |
1289 | ||
3f542974 PS |
1290 | /* While closing port, shutdown all bulk read, write * |
1291 | * and interrupt read if they exists */ | |
1292 | if (serial->dev) { | |
3f542974 | 1293 | if (mos7840_port->write_urb) { |
84fe6e79 | 1294 | dbg("%s", "Shutdown bulk write"); |
3f542974 PS |
1295 | usb_kill_urb(mos7840_port->write_urb); |
1296 | } | |
3f542974 | 1297 | if (mos7840_port->read_urb) { |
84fe6e79 | 1298 | dbg("%s", "Shutdown bulk read"); |
3f542974 | 1299 | usb_kill_urb(mos7840_port->read_urb); |
50de36f7 | 1300 | mos7840_port->read_urb_busy = false; |
3f542974 PS |
1301 | } |
1302 | if ((&mos7840_port->control_urb)) { | |
84fe6e79 | 1303 | dbg("%s", "Shutdown control read"); |
880af9db | 1304 | /*/ usb_kill_urb (mos7840_port->control_urb); */ |
3f542974 PS |
1305 | } |
1306 | } | |
880af9db AC |
1307 | /* if(mos7840_port->ctrl_buf != NULL) */ |
1308 | /* kfree(mos7840_port->ctrl_buf); */ | |
0de9a702 | 1309 | port0->open_ports--; |
84fe6e79 | 1310 | dbg("mos7840_num_open_ports in close%d:in port%d", |
0de9a702 ON |
1311 | port0->open_ports, port->number); |
1312 | if (port0->open_ports == 0) { | |
3f542974 | 1313 | if (serial->port[0]->interrupt_in_urb) { |
84fe6e79 | 1314 | dbg("%s", "Shutdown interrupt_in_urb"); |
0de9a702 | 1315 | usb_kill_urb(serial->port[0]->interrupt_in_urb); |
3f542974 PS |
1316 | } |
1317 | } | |
1318 | ||
1319 | if (mos7840_port->write_urb) { | |
1320 | /* if this urb had a transfer buffer already (old tx) free it */ | |
880af9db | 1321 | if (mos7840_port->write_urb->transfer_buffer != NULL) |
3f542974 | 1322 | kfree(mos7840_port->write_urb->transfer_buffer); |
3f542974 PS |
1323 | usb_free_urb(mos7840_port->write_urb); |
1324 | } | |
1325 | ||
1326 | Data = 0x0; | |
1327 | mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, Data); | |
1328 | ||
1329 | Data = 0x00; | |
1330 | mos7840_set_uart_reg(port, INTERRUPT_ENABLE_REGISTER, Data); | |
1331 | ||
1332 | mos7840_port->open = 0; | |
3f542974 PS |
1333 | } |
1334 | ||
1335 | /************************************************************************ | |
1336 | * | |
1337 | * mos7840_block_until_chase_response | |
1338 | * | |
1339 | * This function will block the close until one of the following: | |
1340 | * 1. Response to our Chase comes from mos7840 | |
dc0d5c1e | 1341 | * 2. A timeout of 10 seconds without activity has expired |
3f542974 PS |
1342 | * (1K of mos7840 data @ 2400 baud ==> 4 sec to empty) |
1343 | * | |
1344 | ************************************************************************/ | |
1345 | ||
95da310e AC |
1346 | static void mos7840_block_until_chase_response(struct tty_struct *tty, |
1347 | struct moschip_port *mos7840_port) | |
3f542974 | 1348 | { |
1e658489 | 1349 | int timeout = msecs_to_jiffies(1000); |
3f542974 PS |
1350 | int wait = 10; |
1351 | int count; | |
1352 | ||
1353 | while (1) { | |
95da310e | 1354 | count = mos7840_chars_in_buffer(tty); |
3f542974 PS |
1355 | |
1356 | /* Check for Buffer status */ | |
880af9db | 1357 | if (count <= 0) |
3f542974 | 1358 | return; |
3f542974 PS |
1359 | |
1360 | /* Block the thread for a while */ | |
1361 | interruptible_sleep_on_timeout(&mos7840_port->wait_chase, | |
1362 | timeout); | |
1363 | /* No activity.. count down section */ | |
1364 | wait--; | |
1365 | if (wait == 0) { | |
441b62c1 | 1366 | dbg("%s - TIMEOUT", __func__); |
3f542974 PS |
1367 | return; |
1368 | } else { | |
dc0d5c1e | 1369 | /* Reset timeout value back to seconds */ |
3f542974 PS |
1370 | wait = 10; |
1371 | } | |
1372 | } | |
1373 | ||
1374 | } | |
1375 | ||
1376 | /***************************************************************************** | |
1377 | * mos7840_break | |
1378 | * this function sends a break to the port | |
1379 | *****************************************************************************/ | |
95da310e | 1380 | static void mos7840_break(struct tty_struct *tty, int break_state) |
3f542974 | 1381 | { |
95da310e | 1382 | struct usb_serial_port *port = tty->driver_data; |
3f542974 PS |
1383 | unsigned char data; |
1384 | struct usb_serial *serial; | |
1385 | struct moschip_port *mos7840_port; | |
1386 | ||
441b62c1 | 1387 | if (mos7840_port_paranoia_check(port, __func__)) { |
84fe6e79 | 1388 | dbg("%s", "Port Paranoia failed"); |
3f542974 PS |
1389 | return; |
1390 | } | |
1391 | ||
441b62c1 | 1392 | serial = mos7840_get_usb_serial(port, __func__); |
3f542974 | 1393 | if (!serial) { |
84fe6e79 | 1394 | dbg("%s", "Serial Paranoia failed"); |
3f542974 PS |
1395 | return; |
1396 | } | |
1397 | ||
1398 | mos7840_port = mos7840_get_port_private(port); | |
1399 | ||
880af9db | 1400 | if (mos7840_port == NULL) |
3f542974 | 1401 | return; |
3f542974 | 1402 | |
95da310e | 1403 | if (serial->dev) |
3f542974 | 1404 | /* flush and block until tx is empty */ |
95da310e | 1405 | mos7840_block_until_chase_response(tty, mos7840_port); |
3f542974 | 1406 | |
95da310e | 1407 | if (break_state == -1) |
3f542974 | 1408 | data = mos7840_port->shadowLCR | LCR_SET_BREAK; |
95da310e | 1409 | else |
3f542974 | 1410 | data = mos7840_port->shadowLCR & ~LCR_SET_BREAK; |
3f542974 | 1411 | |
6b447f04 | 1412 | /* FIXME: no locking on shadowLCR anywhere in driver */ |
3f542974 | 1413 | mos7840_port->shadowLCR = data; |
84fe6e79 | 1414 | dbg("mcs7840_break mos7840_port->shadowLCR is %x", |
3f542974 PS |
1415 | mos7840_port->shadowLCR); |
1416 | mos7840_set_uart_reg(port, LINE_CONTROL_REGISTER, | |
1417 | mos7840_port->shadowLCR); | |
3f542974 PS |
1418 | } |
1419 | ||
1420 | /***************************************************************************** | |
1421 | * mos7840_write_room | |
1422 | * this function is called by the tty driver when it wants to know how many | |
1423 | * bytes of data we can accept for a specific port. | |
1424 | * If successful, we return the amount of room that we have for this port | |
1425 | * Otherwise we return a negative error number. | |
1426 | *****************************************************************************/ | |
1427 | ||
95da310e | 1428 | static int mos7840_write_room(struct tty_struct *tty) |
3f542974 | 1429 | { |
95da310e | 1430 | struct usb_serial_port *port = tty->driver_data; |
3f542974 PS |
1431 | int i; |
1432 | int room = 0; | |
0de9a702 | 1433 | unsigned long flags; |
3f542974 PS |
1434 | struct moschip_port *mos7840_port; |
1435 | ||
441b62c1 | 1436 | if (mos7840_port_paranoia_check(port, __func__)) { |
84fe6e79 TC |
1437 | dbg("%s", "Invalid port"); |
1438 | dbg("%s", " mos7840_write_room:leaving ..........."); | |
3f542974 PS |
1439 | return -1; |
1440 | } | |
1441 | ||
1442 | mos7840_port = mos7840_get_port_private(port); | |
1443 | if (mos7840_port == NULL) { | |
84fe6e79 | 1444 | dbg("%s", "mos7840_break:leaving ..........."); |
3f542974 PS |
1445 | return -1; |
1446 | } | |
1447 | ||
0de9a702 | 1448 | spin_lock_irqsave(&mos7840_port->pool_lock, flags); |
3f542974 | 1449 | for (i = 0; i < NUM_URBS; ++i) { |
880af9db | 1450 | if (!mos7840_port->busy[i]) |
3f542974 | 1451 | room += URB_TRANSFER_BUFFER_SIZE; |
3f542974 | 1452 | } |
0de9a702 | 1453 | spin_unlock_irqrestore(&mos7840_port->pool_lock, flags); |
3f542974 | 1454 | |
0de9a702 | 1455 | room = (room == 0) ? 0 : room - URB_TRANSFER_BUFFER_SIZE + 1; |
441b62c1 | 1456 | dbg("%s - returns %d", __func__, room); |
0de9a702 | 1457 | return room; |
3f542974 PS |
1458 | |
1459 | } | |
1460 | ||
1461 | /***************************************************************************** | |
1462 | * mos7840_write | |
1463 | * this function is called by the tty driver when data should be written to | |
1464 | * the port. | |
1465 | * If successful, we return the number of bytes written, otherwise we | |
1466 | * return a negative error number. | |
1467 | *****************************************************************************/ | |
1468 | ||
95da310e | 1469 | static int mos7840_write(struct tty_struct *tty, struct usb_serial_port *port, |
3f542974 PS |
1470 | const unsigned char *data, int count) |
1471 | { | |
1472 | int status; | |
1473 | int i; | |
1474 | int bytes_sent = 0; | |
1475 | int transfer_size; | |
0de9a702 | 1476 | unsigned long flags; |
3f542974 PS |
1477 | |
1478 | struct moschip_port *mos7840_port; | |
1479 | struct usb_serial *serial; | |
1480 | struct urb *urb; | |
880af9db | 1481 | /* __u16 Data; */ |
3f542974 PS |
1482 | const unsigned char *current_position = data; |
1483 | unsigned char *data1; | |
3f542974 PS |
1484 | |
1485 | #ifdef NOTMOS7840 | |
1486 | Data = 0x00; | |
3f542974 PS |
1487 | status = mos7840_get_uart_reg(port, LINE_CONTROL_REGISTER, &Data); |
1488 | mos7840_port->shadowLCR = Data; | |
84fe6e79 TC |
1489 | dbg("mos7840_write: LINE_CONTROL_REGISTER is %x", Data); |
1490 | dbg("mos7840_write: mos7840_port->shadowLCR is %x", | |
3f542974 PS |
1491 | mos7840_port->shadowLCR); |
1492 | ||
880af9db AC |
1493 | /* Data = 0x03; */ |
1494 | /* status = mos7840_set_uart_reg(port,LINE_CONTROL_REGISTER,Data); */ | |
1495 | /* mos7840_port->shadowLCR=Data;//Need to add later */ | |
3f542974 | 1496 | |
880af9db | 1497 | Data |= SERIAL_LCR_DLAB; /* data latch enable in LCR 0x80 */ |
3f542974 PS |
1498 | status = mos7840_set_uart_reg(port, LINE_CONTROL_REGISTER, Data); |
1499 | ||
880af9db AC |
1500 | /* Data = 0x0c; */ |
1501 | /* status = mos7840_set_uart_reg(port,DIVISOR_LATCH_LSB,Data); */ | |
3f542974 | 1502 | Data = 0x00; |
3f542974 | 1503 | status = mos7840_get_uart_reg(port, DIVISOR_LATCH_LSB, &Data); |
84fe6e79 | 1504 | dbg("mos7840_write:DLL value is %x", Data); |
3f542974 PS |
1505 | |
1506 | Data = 0x0; | |
3f542974 | 1507 | status = mos7840_get_uart_reg(port, DIVISOR_LATCH_MSB, &Data); |
84fe6e79 | 1508 | dbg("mos7840_write:DLM value is %x", Data); |
3f542974 PS |
1509 | |
1510 | Data = Data & ~SERIAL_LCR_DLAB; | |
84fe6e79 | 1511 | dbg("mos7840_write: mos7840_port->shadowLCR is %x", |
3f542974 | 1512 | mos7840_port->shadowLCR); |
3f542974 PS |
1513 | status = mos7840_set_uart_reg(port, LINE_CONTROL_REGISTER, Data); |
1514 | #endif | |
1515 | ||
441b62c1 | 1516 | if (mos7840_port_paranoia_check(port, __func__)) { |
84fe6e79 | 1517 | dbg("%s", "Port Paranoia failed"); |
3f542974 PS |
1518 | return -1; |
1519 | } | |
1520 | ||
1521 | serial = port->serial; | |
441b62c1 | 1522 | if (mos7840_serial_paranoia_check(serial, __func__)) { |
84fe6e79 | 1523 | dbg("%s", "Serial Paranoia failed"); |
3f542974 PS |
1524 | return -1; |
1525 | } | |
1526 | ||
1527 | mos7840_port = mos7840_get_port_private(port); | |
1528 | if (mos7840_port == NULL) { | |
84fe6e79 | 1529 | dbg("%s", "mos7840_port is NULL"); |
3f542974 PS |
1530 | return -1; |
1531 | } | |
1532 | ||
1533 | /* try to find a free urb in the list */ | |
1534 | urb = NULL; | |
1535 | ||
0de9a702 | 1536 | spin_lock_irqsave(&mos7840_port->pool_lock, flags); |
3f542974 | 1537 | for (i = 0; i < NUM_URBS; ++i) { |
0de9a702 ON |
1538 | if (!mos7840_port->busy[i]) { |
1539 | mos7840_port->busy[i] = 1; | |
3f542974 | 1540 | urb = mos7840_port->write_urb_pool[i]; |
84fe6e79 | 1541 | dbg("URB:%d", i); |
3f542974 PS |
1542 | break; |
1543 | } | |
1544 | } | |
0de9a702 | 1545 | spin_unlock_irqrestore(&mos7840_port->pool_lock, flags); |
3f542974 PS |
1546 | |
1547 | if (urb == NULL) { | |
441b62c1 | 1548 | dbg("%s - no more free urbs", __func__); |
3f542974 PS |
1549 | goto exit; |
1550 | } | |
1551 | ||
1552 | if (urb->transfer_buffer == NULL) { | |
1553 | urb->transfer_buffer = | |
1554 | kmalloc(URB_TRANSFER_BUFFER_SIZE, GFP_KERNEL); | |
1555 | ||
1556 | if (urb->transfer_buffer == NULL) { | |
22a416c4 | 1557 | dev_err_console(port, "%s no more kernel memory...\n", |
194343d9 | 1558 | __func__); |
3f542974 PS |
1559 | goto exit; |
1560 | } | |
1561 | } | |
1562 | transfer_size = min(count, URB_TRANSFER_BUFFER_SIZE); | |
1563 | ||
97c4965d | 1564 | memcpy(urb->transfer_buffer, current_position, transfer_size); |
3f542974 PS |
1565 | |
1566 | /* fill urb with data and submit */ | |
093ea2d3 DL |
1567 | if ((serial->num_ports == 2) |
1568 | && ((((__u16)port->number - | |
1569 | (__u16)(port->serial->minor)) % 2) != 0)) { | |
1570 | usb_fill_bulk_urb(urb, | |
1571 | serial->dev, | |
1572 | usb_sndbulkpipe(serial->dev, | |
1573 | (port->bulk_out_endpointAddress) + 2), | |
1574 | urb->transfer_buffer, | |
1575 | transfer_size, | |
1576 | mos7840_bulk_out_data_callback, mos7840_port); | |
1577 | } else { | |
1578 | usb_fill_bulk_urb(urb, | |
1579 | serial->dev, | |
1580 | usb_sndbulkpipe(serial->dev, | |
1581 | port->bulk_out_endpointAddress), | |
1582 | urb->transfer_buffer, | |
1583 | transfer_size, | |
1584 | mos7840_bulk_out_data_callback, mos7840_port); | |
1585 | } | |
3f542974 PS |
1586 | |
1587 | data1 = urb->transfer_buffer; | |
84fe6e79 | 1588 | dbg("bulkout endpoint is %d", port->bulk_out_endpointAddress); |
3f542974 | 1589 | |
0eafe4de D |
1590 | /* Turn on LED */ |
1591 | if (mos7840_port->has_led && !mos7840_port->led_flag) { | |
1592 | mos7840_port->led_flag = true; | |
1593 | mos7840_set_led_sync(port, MODEM_CONTROL_REGISTER, 0x0301); | |
1594 | mod_timer(&mos7840_port->led_timer1, | |
1595 | jiffies + msecs_to_jiffies(LED_ON_MS)); | |
1596 | } | |
1597 | ||
3f542974 PS |
1598 | /* send it down the pipe */ |
1599 | status = usb_submit_urb(urb, GFP_ATOMIC); | |
1600 | ||
1601 | if (status) { | |
0de9a702 | 1602 | mos7840_port->busy[i] = 0; |
22a416c4 | 1603 | dev_err_console(port, "%s - usb_submit_urb(write bulk) failed " |
194343d9 | 1604 | "with status = %d\n", __func__, status); |
3f542974 PS |
1605 | bytes_sent = status; |
1606 | goto exit; | |
1607 | } | |
1608 | bytes_sent = transfer_size; | |
1609 | mos7840_port->icount.tx += transfer_size; | |
0de9a702 | 1610 | smp_wmb(); |
84fe6e79 | 1611 | dbg("mos7840_port->icount.tx is %d:", mos7840_port->icount.tx); |
95da310e | 1612 | exit: |
3f542974 PS |
1613 | return bytes_sent; |
1614 | ||
1615 | } | |
1616 | ||
1617 | /***************************************************************************** | |
1618 | * mos7840_throttle | |
1619 | * this function is called by the tty driver when it wants to stop the data | |
1620 | * being read from the port. | |
1621 | *****************************************************************************/ | |
1622 | ||
95da310e | 1623 | static void mos7840_throttle(struct tty_struct *tty) |
3f542974 | 1624 | { |
95da310e | 1625 | struct usb_serial_port *port = tty->driver_data; |
3f542974 | 1626 | struct moschip_port *mos7840_port; |
3f542974 PS |
1627 | int status; |
1628 | ||
441b62c1 | 1629 | if (mos7840_port_paranoia_check(port, __func__)) { |
84fe6e79 | 1630 | dbg("%s", "Invalid port"); |
3f542974 PS |
1631 | return; |
1632 | } | |
1633 | ||
84fe6e79 | 1634 | dbg("- port %d", port->number); |
3f542974 PS |
1635 | |
1636 | mos7840_port = mos7840_get_port_private(port); | |
1637 | ||
1638 | if (mos7840_port == NULL) | |
1639 | return; | |
1640 | ||
1641 | if (!mos7840_port->open) { | |
84fe6e79 | 1642 | dbg("%s", "port not opened"); |
3f542974 PS |
1643 | return; |
1644 | } | |
1645 | ||
3f542974 PS |
1646 | /* if we are implementing XON/XOFF, send the stop character */ |
1647 | if (I_IXOFF(tty)) { | |
1648 | unsigned char stop_char = STOP_CHAR(tty); | |
95da310e AC |
1649 | status = mos7840_write(tty, port, &stop_char, 1); |
1650 | if (status <= 0) | |
3f542974 | 1651 | return; |
3f542974 | 1652 | } |
3f542974 PS |
1653 | /* if we are implementing RTS/CTS, toggle that line */ |
1654 | if (tty->termios->c_cflag & CRTSCTS) { | |
1655 | mos7840_port->shadowMCR &= ~MCR_RTS; | |
95da310e | 1656 | status = mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, |
3f542974 | 1657 | mos7840_port->shadowMCR); |
95da310e | 1658 | if (status < 0) |
3f542974 | 1659 | return; |
3f542974 | 1660 | } |
3f542974 PS |
1661 | } |
1662 | ||
1663 | /***************************************************************************** | |
1664 | * mos7840_unthrottle | |
880af9db AC |
1665 | * this function is called by the tty driver when it wants to resume |
1666 | * the data being read from the port (called after mos7840_throttle is | |
1667 | * called) | |
3f542974 | 1668 | *****************************************************************************/ |
95da310e | 1669 | static void mos7840_unthrottle(struct tty_struct *tty) |
3f542974 | 1670 | { |
95da310e | 1671 | struct usb_serial_port *port = tty->driver_data; |
3f542974 PS |
1672 | int status; |
1673 | struct moschip_port *mos7840_port = mos7840_get_port_private(port); | |
1674 | ||
441b62c1 | 1675 | if (mos7840_port_paranoia_check(port, __func__)) { |
84fe6e79 | 1676 | dbg("%s", "Invalid port"); |
3f542974 PS |
1677 | return; |
1678 | } | |
1679 | ||
1680 | if (mos7840_port == NULL) | |
1681 | return; | |
1682 | ||
1683 | if (!mos7840_port->open) { | |
441b62c1 | 1684 | dbg("%s - port not opened", __func__); |
3f542974 PS |
1685 | return; |
1686 | } | |
1687 | ||
3f542974 PS |
1688 | /* if we are implementing XON/XOFF, send the start character */ |
1689 | if (I_IXOFF(tty)) { | |
1690 | unsigned char start_char = START_CHAR(tty); | |
95da310e AC |
1691 | status = mos7840_write(tty, port, &start_char, 1); |
1692 | if (status <= 0) | |
3f542974 | 1693 | return; |
3f542974 PS |
1694 | } |
1695 | ||
1696 | /* if we are implementing RTS/CTS, toggle that line */ | |
1697 | if (tty->termios->c_cflag & CRTSCTS) { | |
1698 | mos7840_port->shadowMCR |= MCR_RTS; | |
95da310e | 1699 | status = mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, |
3f542974 | 1700 | mos7840_port->shadowMCR); |
95da310e | 1701 | if (status < 0) |
3f542974 | 1702 | return; |
3f542974 | 1703 | } |
3f542974 PS |
1704 | } |
1705 | ||
60b33c13 | 1706 | static int mos7840_tiocmget(struct tty_struct *tty) |
3f542974 | 1707 | { |
95da310e | 1708 | struct usb_serial_port *port = tty->driver_data; |
3f542974 PS |
1709 | struct moschip_port *mos7840_port; |
1710 | unsigned int result; | |
1711 | __u16 msr; | |
1712 | __u16 mcr; | |
880af9db | 1713 | int status; |
3f542974 PS |
1714 | mos7840_port = mos7840_get_port_private(port); |
1715 | ||
3f542974 PS |
1716 | if (mos7840_port == NULL) |
1717 | return -ENODEV; | |
1718 | ||
1719 | status = mos7840_get_uart_reg(port, MODEM_STATUS_REGISTER, &msr); | |
1720 | status = mos7840_get_uart_reg(port, MODEM_CONTROL_REGISTER, &mcr); | |
1721 | result = ((mcr & MCR_DTR) ? TIOCM_DTR : 0) | |
1722 | | ((mcr & MCR_RTS) ? TIOCM_RTS : 0) | |
1723 | | ((mcr & MCR_LOOPBACK) ? TIOCM_LOOP : 0) | |
1724 | | ((msr & MOS7840_MSR_CTS) ? TIOCM_CTS : 0) | |
1725 | | ((msr & MOS7840_MSR_CD) ? TIOCM_CAR : 0) | |
1726 | | ((msr & MOS7840_MSR_RI) ? TIOCM_RI : 0) | |
1727 | | ((msr & MOS7840_MSR_DSR) ? TIOCM_DSR : 0); | |
1728 | ||
441b62c1 | 1729 | dbg("%s - 0x%04X", __func__, result); |
3f542974 PS |
1730 | |
1731 | return result; | |
1732 | } | |
1733 | ||
20b9d177 | 1734 | static int mos7840_tiocmset(struct tty_struct *tty, |
3f542974 PS |
1735 | unsigned int set, unsigned int clear) |
1736 | { | |
95da310e | 1737 | struct usb_serial_port *port = tty->driver_data; |
3f542974 PS |
1738 | struct moschip_port *mos7840_port; |
1739 | unsigned int mcr; | |
87521c46 | 1740 | int status; |
3f542974 | 1741 | |
3f542974 PS |
1742 | mos7840_port = mos7840_get_port_private(port); |
1743 | ||
1744 | if (mos7840_port == NULL) | |
1745 | return -ENODEV; | |
1746 | ||
e2984494 | 1747 | /* FIXME: What locks the port registers ? */ |
3f542974 PS |
1748 | mcr = mos7840_port->shadowMCR; |
1749 | if (clear & TIOCM_RTS) | |
1750 | mcr &= ~MCR_RTS; | |
1751 | if (clear & TIOCM_DTR) | |
1752 | mcr &= ~MCR_DTR; | |
1753 | if (clear & TIOCM_LOOP) | |
1754 | mcr &= ~MCR_LOOPBACK; | |
1755 | ||
1756 | if (set & TIOCM_RTS) | |
1757 | mcr |= MCR_RTS; | |
1758 | if (set & TIOCM_DTR) | |
1759 | mcr |= MCR_DTR; | |
1760 | if (set & TIOCM_LOOP) | |
1761 | mcr |= MCR_LOOPBACK; | |
1762 | ||
1763 | mos7840_port->shadowMCR = mcr; | |
1764 | ||
3f542974 PS |
1765 | status = mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, mcr); |
1766 | if (status < 0) { | |
84fe6e79 | 1767 | dbg("setting MODEM_CONTROL_REGISTER Failed"); |
87521c46 | 1768 | return status; |
3f542974 PS |
1769 | } |
1770 | ||
1771 | return 0; | |
1772 | } | |
1773 | ||
1774 | /***************************************************************************** | |
1775 | * mos7840_calc_baud_rate_divisor | |
1776 | * this function calculates the proper baud rate divisor for the specified | |
1777 | * baud rate. | |
1778 | *****************************************************************************/ | |
1779 | static int mos7840_calc_baud_rate_divisor(int baudRate, int *divisor, | |
880af9db | 1780 | __u16 *clk_sel_val) |
3f542974 | 1781 | { |
441b62c1 | 1782 | dbg("%s - %d", __func__, baudRate); |
3f542974 PS |
1783 | |
1784 | if (baudRate <= 115200) { | |
1785 | *divisor = 115200 / baudRate; | |
1786 | *clk_sel_val = 0x0; | |
1787 | } | |
1788 | if ((baudRate > 115200) && (baudRate <= 230400)) { | |
1789 | *divisor = 230400 / baudRate; | |
1790 | *clk_sel_val = 0x10; | |
1791 | } else if ((baudRate > 230400) && (baudRate <= 403200)) { | |
1792 | *divisor = 403200 / baudRate; | |
1793 | *clk_sel_val = 0x20; | |
1794 | } else if ((baudRate > 403200) && (baudRate <= 460800)) { | |
1795 | *divisor = 460800 / baudRate; | |
1796 | *clk_sel_val = 0x30; | |
1797 | } else if ((baudRate > 460800) && (baudRate <= 806400)) { | |
1798 | *divisor = 806400 / baudRate; | |
1799 | *clk_sel_val = 0x40; | |
1800 | } else if ((baudRate > 806400) && (baudRate <= 921600)) { | |
1801 | *divisor = 921600 / baudRate; | |
1802 | *clk_sel_val = 0x50; | |
1803 | } else if ((baudRate > 921600) && (baudRate <= 1572864)) { | |
1804 | *divisor = 1572864 / baudRate; | |
1805 | *clk_sel_val = 0x60; | |
1806 | } else if ((baudRate > 1572864) && (baudRate <= 3145728)) { | |
1807 | *divisor = 3145728 / baudRate; | |
1808 | *clk_sel_val = 0x70; | |
1809 | } | |
1810 | return 0; | |
1811 | ||
1812 | #ifdef NOTMCS7840 | |
1813 | ||
1814 | for (i = 0; i < ARRAY_SIZE(mos7840_divisor_table); i++) { | |
1815 | if (mos7840_divisor_table[i].BaudRate == baudrate) { | |
1816 | *divisor = mos7840_divisor_table[i].Divisor; | |
1817 | return 0; | |
1818 | } | |
1819 | } | |
1820 | ||
1821 | /* After trying for all the standard baud rates * | |
1822 | * Try calculating the divisor for this baud rate */ | |
1823 | ||
1824 | if (baudrate > 75 && baudrate < 230400) { | |
1825 | /* get the divisor */ | |
1826 | custom = (__u16) (230400L / baudrate); | |
1827 | ||
1828 | /* Check for round off */ | |
1829 | round1 = (__u16) (2304000L / baudrate); | |
1830 | round = (__u16) (round1 - (custom * 10)); | |
880af9db | 1831 | if (round > 4) |
3f542974 | 1832 | custom++; |
3f542974 PS |
1833 | *divisor = custom; |
1834 | ||
84fe6e79 | 1835 | dbg(" Baud %d = %d", baudrate, custom); |
3f542974 PS |
1836 | return 0; |
1837 | } | |
1838 | ||
84fe6e79 | 1839 | dbg("%s", " Baud calculation Failed..."); |
3f542974 PS |
1840 | return -1; |
1841 | #endif | |
1842 | } | |
1843 | ||
1844 | /***************************************************************************** | |
1845 | * mos7840_send_cmd_write_baud_rate | |
1846 | * this function sends the proper command to change the baud rate of the | |
1847 | * specified port. | |
1848 | *****************************************************************************/ | |
1849 | ||
1850 | static int mos7840_send_cmd_write_baud_rate(struct moschip_port *mos7840_port, | |
1851 | int baudRate) | |
1852 | { | |
1853 | int divisor = 0; | |
1854 | int status; | |
1855 | __u16 Data; | |
1856 | unsigned char number; | |
1857 | __u16 clk_sel_val; | |
1858 | struct usb_serial_port *port; | |
1859 | ||
1860 | if (mos7840_port == NULL) | |
1861 | return -1; | |
1862 | ||
1863 | port = (struct usb_serial_port *)mos7840_port->port; | |
441b62c1 | 1864 | if (mos7840_port_paranoia_check(port, __func__)) { |
84fe6e79 | 1865 | dbg("%s", "Invalid port"); |
3f542974 PS |
1866 | return -1; |
1867 | } | |
1868 | ||
441b62c1 | 1869 | if (mos7840_serial_paranoia_check(port->serial, __func__)) { |
84fe6e79 | 1870 | dbg("%s", "Invalid Serial"); |
3f542974 PS |
1871 | return -1; |
1872 | } | |
1873 | ||
3f542974 PS |
1874 | number = mos7840_port->port->number - mos7840_port->port->serial->minor; |
1875 | ||
441b62c1 | 1876 | dbg("%s - port = %d, baud = %d", __func__, |
3f542974 | 1877 | mos7840_port->port->number, baudRate); |
880af9db | 1878 | /* reset clk_uart_sel in spregOffset */ |
3f542974 PS |
1879 | if (baudRate > 115200) { |
1880 | #ifdef HW_flow_control | |
880af9db AC |
1881 | /* NOTE: need to see the pther register to modify */ |
1882 | /* setting h/w flow control bit to 1 */ | |
3f542974 PS |
1883 | Data = 0x2b; |
1884 | mos7840_port->shadowMCR = Data; | |
880af9db AC |
1885 | status = mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, |
1886 | Data); | |
3f542974 | 1887 | if (status < 0) { |
84fe6e79 | 1888 | dbg("Writing spreg failed in set_serial_baud"); |
3f542974 PS |
1889 | return -1; |
1890 | } | |
1891 | #endif | |
1892 | ||
1893 | } else { | |
1894 | #ifdef HW_flow_control | |
093ea2d3 | 1895 | /* setting h/w flow control bit to 0 */ |
3f542974 PS |
1896 | Data = 0xb; |
1897 | mos7840_port->shadowMCR = Data; | |
880af9db AC |
1898 | status = mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, |
1899 | Data); | |
3f542974 | 1900 | if (status < 0) { |
84fe6e79 | 1901 | dbg("Writing spreg failed in set_serial_baud"); |
3f542974 PS |
1902 | return -1; |
1903 | } | |
1904 | #endif | |
1905 | ||
1906 | } | |
1907 | ||
880af9db | 1908 | if (1) { /* baudRate <= 115200) */ |
3f542974 PS |
1909 | clk_sel_val = 0x0; |
1910 | Data = 0x0; | |
880af9db | 1911 | status = mos7840_calc_baud_rate_divisor(baudRate, &divisor, |
3f542974 | 1912 | &clk_sel_val); |
880af9db AC |
1913 | status = mos7840_get_reg_sync(port, mos7840_port->SpRegOffset, |
1914 | &Data); | |
3f542974 | 1915 | if (status < 0) { |
84fe6e79 | 1916 | dbg("reading spreg failed in set_serial_baud"); |
3f542974 PS |
1917 | return -1; |
1918 | } | |
1919 | Data = (Data & 0x8f) | clk_sel_val; | |
880af9db AC |
1920 | status = mos7840_set_reg_sync(port, mos7840_port->SpRegOffset, |
1921 | Data); | |
3f542974 | 1922 | if (status < 0) { |
84fe6e79 | 1923 | dbg("Writing spreg failed in set_serial_baud"); |
3f542974 PS |
1924 | return -1; |
1925 | } | |
1926 | /* Calculate the Divisor */ | |
1927 | ||
1928 | if (status) { | |
194343d9 | 1929 | dev_err(&port->dev, "%s - bad baud rate\n", __func__); |
3f542974 PS |
1930 | return status; |
1931 | } | |
1932 | /* Enable access to divisor latch */ | |
1933 | Data = mos7840_port->shadowLCR | SERIAL_LCR_DLAB; | |
1934 | mos7840_port->shadowLCR = Data; | |
1935 | mos7840_set_uart_reg(port, LINE_CONTROL_REGISTER, Data); | |
1936 | ||
1937 | /* Write the divisor */ | |
1938 | Data = (unsigned char)(divisor & 0xff); | |
84fe6e79 | 1939 | dbg("set_serial_baud Value to write DLL is %x", Data); |
3f542974 PS |
1940 | mos7840_set_uart_reg(port, DIVISOR_LATCH_LSB, Data); |
1941 | ||
1942 | Data = (unsigned char)((divisor & 0xff00) >> 8); | |
84fe6e79 | 1943 | dbg("set_serial_baud Value to write DLM is %x", Data); |
3f542974 PS |
1944 | mos7840_set_uart_reg(port, DIVISOR_LATCH_MSB, Data); |
1945 | ||
1946 | /* Disable access to divisor latch */ | |
1947 | Data = mos7840_port->shadowLCR & ~SERIAL_LCR_DLAB; | |
1948 | mos7840_port->shadowLCR = Data; | |
1949 | mos7840_set_uart_reg(port, LINE_CONTROL_REGISTER, Data); | |
1950 | ||
1951 | } | |
3f542974 PS |
1952 | return status; |
1953 | } | |
1954 | ||
1955 | /***************************************************************************** | |
1956 | * mos7840_change_port_settings | |
1957 | * This routine is called to set the UART on the device to match | |
1958 | * the specified new settings. | |
1959 | *****************************************************************************/ | |
1960 | ||
95da310e AC |
1961 | static void mos7840_change_port_settings(struct tty_struct *tty, |
1962 | struct moschip_port *mos7840_port, struct ktermios *old_termios) | |
3f542974 | 1963 | { |
3f542974 PS |
1964 | int baud; |
1965 | unsigned cflag; | |
1966 | unsigned iflag; | |
1967 | __u8 lData; | |
1968 | __u8 lParity; | |
1969 | __u8 lStop; | |
1970 | int status; | |
1971 | __u16 Data; | |
1972 | struct usb_serial_port *port; | |
1973 | struct usb_serial *serial; | |
1974 | ||
1975 | if (mos7840_port == NULL) | |
1976 | return; | |
1977 | ||
1978 | port = (struct usb_serial_port *)mos7840_port->port; | |
1979 | ||
441b62c1 | 1980 | if (mos7840_port_paranoia_check(port, __func__)) { |
84fe6e79 | 1981 | dbg("%s", "Invalid port"); |
3f542974 PS |
1982 | return; |
1983 | } | |
1984 | ||
441b62c1 | 1985 | if (mos7840_serial_paranoia_check(port->serial, __func__)) { |
84fe6e79 | 1986 | dbg("%s", "Invalid Serial"); |
3f542974 PS |
1987 | return; |
1988 | } | |
1989 | ||
1990 | serial = port->serial; | |
1991 | ||
441b62c1 | 1992 | dbg("%s - port %d", __func__, mos7840_port->port->number); |
3f542974 PS |
1993 | |
1994 | if (!mos7840_port->open) { | |
441b62c1 | 1995 | dbg("%s - port not opened", __func__); |
3f542974 PS |
1996 | return; |
1997 | } | |
1998 | ||
3f542974 PS |
1999 | lData = LCR_BITS_8; |
2000 | lStop = LCR_STOP_1; | |
2001 | lParity = LCR_PAR_NONE; | |
2002 | ||
2003 | cflag = tty->termios->c_cflag; | |
2004 | iflag = tty->termios->c_iflag; | |
2005 | ||
2006 | /* Change the number of bits */ | |
2007 | if (cflag & CSIZE) { | |
2008 | switch (cflag & CSIZE) { | |
2009 | case CS5: | |
2010 | lData = LCR_BITS_5; | |
2011 | break; | |
2012 | ||
2013 | case CS6: | |
2014 | lData = LCR_BITS_6; | |
2015 | break; | |
2016 | ||
2017 | case CS7: | |
2018 | lData = LCR_BITS_7; | |
2019 | break; | |
2020 | default: | |
2021 | case CS8: | |
2022 | lData = LCR_BITS_8; | |
2023 | break; | |
2024 | } | |
2025 | } | |
2026 | /* Change the Parity bit */ | |
2027 | if (cflag & PARENB) { | |
2028 | if (cflag & PARODD) { | |
2029 | lParity = LCR_PAR_ODD; | |
441b62c1 | 2030 | dbg("%s - parity = odd", __func__); |
3f542974 PS |
2031 | } else { |
2032 | lParity = LCR_PAR_EVEN; | |
441b62c1 | 2033 | dbg("%s - parity = even", __func__); |
3f542974 PS |
2034 | } |
2035 | ||
2036 | } else { | |
441b62c1 | 2037 | dbg("%s - parity = none", __func__); |
3f542974 PS |
2038 | } |
2039 | ||
880af9db | 2040 | if (cflag & CMSPAR) |
3f542974 | 2041 | lParity = lParity | 0x20; |
3f542974 PS |
2042 | |
2043 | /* Change the Stop bit */ | |
2044 | if (cflag & CSTOPB) { | |
2045 | lStop = LCR_STOP_2; | |
441b62c1 | 2046 | dbg("%s - stop bits = 2", __func__); |
3f542974 PS |
2047 | } else { |
2048 | lStop = LCR_STOP_1; | |
441b62c1 | 2049 | dbg("%s - stop bits = 1", __func__); |
3f542974 PS |
2050 | } |
2051 | ||
2052 | /* Update the LCR with the correct value */ | |
2053 | mos7840_port->shadowLCR &= | |
2054 | ~(LCR_BITS_MASK | LCR_STOP_MASK | LCR_PAR_MASK); | |
2055 | mos7840_port->shadowLCR |= (lData | lParity | lStop); | |
2056 | ||
84fe6e79 | 2057 | dbg("mos7840_change_port_settings mos7840_port->shadowLCR is %x", |
3f542974 PS |
2058 | mos7840_port->shadowLCR); |
2059 | /* Disable Interrupts */ | |
2060 | Data = 0x00; | |
2061 | mos7840_set_uart_reg(port, INTERRUPT_ENABLE_REGISTER, Data); | |
2062 | ||
2063 | Data = 0x00; | |
2064 | mos7840_set_uart_reg(port, FIFO_CONTROL_REGISTER, Data); | |
2065 | ||
2066 | Data = 0xcf; | |
2067 | mos7840_set_uart_reg(port, FIFO_CONTROL_REGISTER, Data); | |
2068 | ||
2069 | /* Send the updated LCR value to the mos7840 */ | |
2070 | Data = mos7840_port->shadowLCR; | |
2071 | ||
2072 | mos7840_set_uart_reg(port, LINE_CONTROL_REGISTER, Data); | |
2073 | ||
2074 | Data = 0x00b; | |
2075 | mos7840_port->shadowMCR = Data; | |
2076 | mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, Data); | |
2077 | Data = 0x00b; | |
2078 | mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, Data); | |
2079 | ||
2080 | /* set up the MCR register and send it to the mos7840 */ | |
2081 | ||
2082 | mos7840_port->shadowMCR = MCR_MASTER_IE; | |
880af9db | 2083 | if (cflag & CBAUD) |
3f542974 | 2084 | mos7840_port->shadowMCR |= (MCR_DTR | MCR_RTS); |
3f542974 | 2085 | |
880af9db | 2086 | if (cflag & CRTSCTS) |
3f542974 | 2087 | mos7840_port->shadowMCR |= (MCR_XON_ANY); |
880af9db | 2088 | else |
3f542974 | 2089 | mos7840_port->shadowMCR &= ~(MCR_XON_ANY); |
3f542974 PS |
2090 | |
2091 | Data = mos7840_port->shadowMCR; | |
2092 | mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, Data); | |
2093 | ||
2094 | /* Determine divisor based on baud rate */ | |
2095 | baud = tty_get_baud_rate(tty); | |
2096 | ||
2097 | if (!baud) { | |
2098 | /* pick a default, any default... */ | |
84fe6e79 | 2099 | dbg("%s", "Picked default baud..."); |
3f542974 PS |
2100 | baud = 9600; |
2101 | } | |
2102 | ||
441b62c1 | 2103 | dbg("%s - baud rate = %d", __func__, baud); |
3f542974 PS |
2104 | status = mos7840_send_cmd_write_baud_rate(mos7840_port, baud); |
2105 | ||
2106 | /* Enable Interrupts */ | |
2107 | Data = 0x0c; | |
2108 | mos7840_set_uart_reg(port, INTERRUPT_ENABLE_REGISTER, Data); | |
2109 | ||
50de36f7 | 2110 | if (mos7840_port->read_urb_busy == false) { |
50de36f7 | 2111 | mos7840_port->read_urb_busy = true; |
3f542974 | 2112 | status = usb_submit_urb(mos7840_port->read_urb, GFP_ATOMIC); |
3f542974 | 2113 | if (status) { |
50de36f7 | 2114 | dbg("usb_submit_urb(read bulk) failed, status = %d", |
3f542974 | 2115 | status); |
50de36f7 | 2116 | mos7840_port->read_urb_busy = false; |
3f542974 PS |
2117 | } |
2118 | } | |
2119 | wake_up(&mos7840_port->delta_msr_wait); | |
2120 | mos7840_port->delta_msr_cond = 1; | |
84fe6e79 | 2121 | dbg("mos7840_change_port_settings mos7840_port->shadowLCR is End %x", |
3f542974 | 2122 | mos7840_port->shadowLCR); |
3f542974 PS |
2123 | } |
2124 | ||
2125 | /***************************************************************************** | |
2126 | * mos7840_set_termios | |
2127 | * this function is called by the tty driver when it wants to change | |
2128 | * the termios structure | |
2129 | *****************************************************************************/ | |
2130 | ||
95da310e AC |
2131 | static void mos7840_set_termios(struct tty_struct *tty, |
2132 | struct usb_serial_port *port, | |
606d099c | 2133 | struct ktermios *old_termios) |
3f542974 PS |
2134 | { |
2135 | int status; | |
2136 | unsigned int cflag; | |
2137 | struct usb_serial *serial; | |
2138 | struct moschip_port *mos7840_port; | |
3363155b | 2139 | |
441b62c1 | 2140 | if (mos7840_port_paranoia_check(port, __func__)) { |
84fe6e79 | 2141 | dbg("%s", "Invalid port"); |
3f542974 PS |
2142 | return; |
2143 | } | |
2144 | ||
2145 | serial = port->serial; | |
2146 | ||
441b62c1 | 2147 | if (mos7840_serial_paranoia_check(serial, __func__)) { |
84fe6e79 | 2148 | dbg("%s", "Invalid Serial"); |
3f542974 PS |
2149 | return; |
2150 | } | |
2151 | ||
2152 | mos7840_port = mos7840_get_port_private(port); | |
2153 | ||
2154 | if (mos7840_port == NULL) | |
2155 | return; | |
2156 | ||
3f542974 | 2157 | if (!mos7840_port->open) { |
441b62c1 | 2158 | dbg("%s - port not opened", __func__); |
3f542974 PS |
2159 | return; |
2160 | } | |
2161 | ||
84fe6e79 | 2162 | dbg("%s", "setting termios - "); |
3f542974 PS |
2163 | |
2164 | cflag = tty->termios->c_cflag; | |
2165 | ||
441b62c1 | 2166 | dbg("%s - clfag %08x iflag %08x", __func__, |
3f542974 | 2167 | tty->termios->c_cflag, RELEVANT_IFLAG(tty->termios->c_iflag)); |
441b62c1 | 2168 | dbg("%s - old clfag %08x old iflag %08x", __func__, |
3d3ddce5 | 2169 | old_termios->c_cflag, RELEVANT_IFLAG(old_termios->c_iflag)); |
441b62c1 | 2170 | dbg("%s - port %d", __func__, port->number); |
3f542974 PS |
2171 | |
2172 | /* change the port settings to the new ones specified */ | |
2173 | ||
95da310e | 2174 | mos7840_change_port_settings(tty, mos7840_port, old_termios); |
3f542974 PS |
2175 | |
2176 | if (!mos7840_port->read_urb) { | |
84fe6e79 | 2177 | dbg("%s", "URB KILLED !!!!!"); |
3f542974 PS |
2178 | return; |
2179 | } | |
2180 | ||
50de36f7 | 2181 | if (mos7840_port->read_urb_busy == false) { |
50de36f7 | 2182 | mos7840_port->read_urb_busy = true; |
3f542974 PS |
2183 | status = usb_submit_urb(mos7840_port->read_urb, GFP_ATOMIC); |
2184 | if (status) { | |
50de36f7 | 2185 | dbg("usb_submit_urb(read bulk) failed, status = %d", |
3f542974 | 2186 | status); |
50de36f7 | 2187 | mos7840_port->read_urb_busy = false; |
3f542974 PS |
2188 | } |
2189 | } | |
3f542974 PS |
2190 | } |
2191 | ||
2192 | /***************************************************************************** | |
2193 | * mos7840_get_lsr_info - get line status register info | |
2194 | * | |
2195 | * Purpose: Let user call ioctl() to get info when the UART physically | |
2196 | * is emptied. On bus types like RS485, the transmitter must | |
2197 | * release the bus after transmitting. This must be done when | |
2198 | * the transmit shift register is empty, not be done when the | |
2199 | * transmit holding register is empty. This functionality | |
2200 | * allows an RS485 driver to be written in user space. | |
2201 | *****************************************************************************/ | |
2202 | ||
95da310e | 2203 | static int mos7840_get_lsr_info(struct tty_struct *tty, |
97c4965d | 2204 | unsigned int __user *value) |
3f542974 PS |
2205 | { |
2206 | int count; | |
2207 | unsigned int result = 0; | |
2208 | ||
95da310e | 2209 | count = mos7840_chars_in_buffer(tty); |
3f542974 | 2210 | if (count == 0) { |
441b62c1 | 2211 | dbg("%s -- Empty", __func__); |
3f542974 PS |
2212 | result = TIOCSER_TEMT; |
2213 | } | |
2214 | ||
2215 | if (copy_to_user(value, &result, sizeof(int))) | |
2216 | return -EFAULT; | |
2217 | return 0; | |
2218 | } | |
2219 | ||
3f542974 PS |
2220 | /***************************************************************************** |
2221 | * mos7840_get_serial_info | |
2222 | * function to get information about serial port | |
2223 | *****************************************************************************/ | |
2224 | ||
2225 | static int mos7840_get_serial_info(struct moschip_port *mos7840_port, | |
97c4965d | 2226 | struct serial_struct __user *retinfo) |
3f542974 PS |
2227 | { |
2228 | struct serial_struct tmp; | |
2229 | ||
2230 | if (mos7840_port == NULL) | |
2231 | return -1; | |
2232 | ||
2233 | if (!retinfo) | |
2234 | return -EFAULT; | |
2235 | ||
2236 | memset(&tmp, 0, sizeof(tmp)); | |
2237 | ||
2238 | tmp.type = PORT_16550A; | |
2239 | tmp.line = mos7840_port->port->serial->minor; | |
2240 | tmp.port = mos7840_port->port->number; | |
2241 | tmp.irq = 0; | |
2242 | tmp.flags = ASYNC_SKIP_TEST | ASYNC_AUTO_IRQ; | |
2243 | tmp.xmit_fifo_size = NUM_URBS * URB_TRANSFER_BUFFER_SIZE; | |
2244 | tmp.baud_base = 9600; | |
2245 | tmp.close_delay = 5 * HZ; | |
2246 | tmp.closing_wait = 30 * HZ; | |
2247 | ||
2248 | if (copy_to_user(retinfo, &tmp, sizeof(*retinfo))) | |
2249 | return -EFAULT; | |
2250 | return 0; | |
2251 | } | |
2252 | ||
0bca1b91 AC |
2253 | static int mos7840_get_icount(struct tty_struct *tty, |
2254 | struct serial_icounter_struct *icount) | |
2255 | { | |
2256 | struct usb_serial_port *port = tty->driver_data; | |
2257 | struct moschip_port *mos7840_port; | |
2258 | struct async_icount cnow; | |
2259 | ||
2260 | mos7840_port = mos7840_get_port_private(port); | |
2261 | cnow = mos7840_port->icount; | |
2262 | ||
2263 | smp_rmb(); | |
2264 | icount->cts = cnow.cts; | |
2265 | icount->dsr = cnow.dsr; | |
2266 | icount->rng = cnow.rng; | |
2267 | icount->dcd = cnow.dcd; | |
2268 | icount->rx = cnow.rx; | |
2269 | icount->tx = cnow.tx; | |
2270 | icount->frame = cnow.frame; | |
2271 | icount->overrun = cnow.overrun; | |
2272 | icount->parity = cnow.parity; | |
2273 | icount->brk = cnow.brk; | |
2274 | icount->buf_overrun = cnow.buf_overrun; | |
2275 | ||
2276 | dbg("%s (%d) TIOCGICOUNT RX=%d, TX=%d", __func__, | |
2277 | port->number, icount->rx, icount->tx); | |
2278 | return 0; | |
2279 | } | |
2280 | ||
3f542974 PS |
2281 | /***************************************************************************** |
2282 | * SerialIoctl | |
2283 | * this function handles any ioctl calls to the driver | |
2284 | *****************************************************************************/ | |
2285 | ||
00a0d0d6 | 2286 | static int mos7840_ioctl(struct tty_struct *tty, |
3f542974 PS |
2287 | unsigned int cmd, unsigned long arg) |
2288 | { | |
95da310e | 2289 | struct usb_serial_port *port = tty->driver_data; |
97c4965d | 2290 | void __user *argp = (void __user *)arg; |
3f542974 | 2291 | struct moschip_port *mos7840_port; |
3f542974 PS |
2292 | |
2293 | struct async_icount cnow; | |
2294 | struct async_icount cprev; | |
3f542974 | 2295 | |
441b62c1 | 2296 | if (mos7840_port_paranoia_check(port, __func__)) { |
84fe6e79 | 2297 | dbg("%s", "Invalid port"); |
3f542974 PS |
2298 | return -1; |
2299 | } | |
2300 | ||
2301 | mos7840_port = mos7840_get_port_private(port); | |
3f542974 PS |
2302 | |
2303 | if (mos7840_port == NULL) | |
2304 | return -1; | |
2305 | ||
441b62c1 | 2306 | dbg("%s - port %d, cmd = 0x%x", __func__, port->number, cmd); |
3f542974 PS |
2307 | |
2308 | switch (cmd) { | |
2309 | /* return number of bytes available */ | |
2310 | ||
3f542974 | 2311 | case TIOCSERGETLSR: |
441b62c1 | 2312 | dbg("%s (%d) TIOCSERGETLSR", __func__, port->number); |
95da310e | 2313 | return mos7840_get_lsr_info(tty, argp); |
3f542974 | 2314 | |
3f542974 | 2315 | case TIOCGSERIAL: |
441b62c1 | 2316 | dbg("%s (%d) TIOCGSERIAL", __func__, port->number); |
97c4965d | 2317 | return mos7840_get_serial_info(mos7840_port, argp); |
3f542974 PS |
2318 | |
2319 | case TIOCSSERIAL: | |
441b62c1 | 2320 | dbg("%s (%d) TIOCSSERIAL", __func__, port->number); |
3f542974 PS |
2321 | break; |
2322 | ||
2323 | case TIOCMIWAIT: | |
441b62c1 | 2324 | dbg("%s (%d) TIOCMIWAIT", __func__, port->number); |
3f542974 PS |
2325 | cprev = mos7840_port->icount; |
2326 | while (1) { | |
880af9db | 2327 | /* interruptible_sleep_on(&mos7840_port->delta_msr_wait); */ |
3f542974 PS |
2328 | mos7840_port->delta_msr_cond = 0; |
2329 | wait_event_interruptible(mos7840_port->delta_msr_wait, | |
2330 | (mos7840_port-> | |
2331 | delta_msr_cond == 1)); | |
2332 | ||
2333 | /* see if a signal did it */ | |
2334 | if (signal_pending(current)) | |
2335 | return -ERESTARTSYS; | |
2336 | cnow = mos7840_port->icount; | |
0de9a702 | 2337 | smp_rmb(); |
3f542974 PS |
2338 | if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr && |
2339 | cnow.dcd == cprev.dcd && cnow.cts == cprev.cts) | |
2340 | return -EIO; /* no change => error */ | |
2341 | if (((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) || | |
2342 | ((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) || | |
2343 | ((arg & TIOCM_CD) && (cnow.dcd != cprev.dcd)) || | |
2344 | ((arg & TIOCM_CTS) && (cnow.cts != cprev.cts))) { | |
2345 | return 0; | |
2346 | } | |
2347 | cprev = cnow; | |
2348 | } | |
2349 | /* NOTREACHED */ | |
2350 | break; | |
2351 | ||
3f542974 PS |
2352 | default: |
2353 | break; | |
2354 | } | |
3f542974 PS |
2355 | return -ENOIOCTLCMD; |
2356 | } | |
2357 | ||
0eafe4de D |
2358 | static int mos7810_check(struct usb_serial *serial) |
2359 | { | |
2360 | int i, pass_count = 0; | |
2361 | __u16 data = 0, mcr_data = 0; | |
2362 | __u16 test_pattern = 0x55AA; | |
2363 | ||
2364 | /* Store MCR setting */ | |
2365 | usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), | |
2366 | MCS_RDREQ, MCS_RD_RTYPE, 0x0300, MODEM_CONTROL_REGISTER, | |
2367 | &mcr_data, VENDOR_READ_LENGTH, MOS_WDR_TIMEOUT); | |
2368 | ||
2369 | for (i = 0; i < 16; i++) { | |
2370 | /* Send the 1-bit test pattern out to MCS7810 test pin */ | |
2371 | usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), | |
2372 | MCS_WRREQ, MCS_WR_RTYPE, | |
2373 | (0x0300 | (((test_pattern >> i) & 0x0001) << 1)), | |
2374 | MODEM_CONTROL_REGISTER, NULL, 0, MOS_WDR_TIMEOUT); | |
2375 | ||
2376 | /* Read the test pattern back */ | |
2377 | usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), | |
2378 | MCS_RDREQ, MCS_RD_RTYPE, 0, GPIO_REGISTER, &data, | |
2379 | VENDOR_READ_LENGTH, MOS_WDR_TIMEOUT); | |
2380 | ||
2381 | /* If this is a MCS7810 device, both test patterns must match */ | |
2382 | if (((test_pattern >> i) ^ (~data >> 1)) & 0x0001) | |
2383 | break; | |
2384 | ||
2385 | pass_count++; | |
2386 | } | |
2387 | ||
2388 | /* Restore MCR setting */ | |
2389 | usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), MCS_WRREQ, | |
2390 | MCS_WR_RTYPE, 0x0300 | mcr_data, MODEM_CONTROL_REGISTER, NULL, | |
2391 | 0, MOS_WDR_TIMEOUT); | |
2392 | ||
2393 | if (pass_count == 16) | |
2394 | return 1; | |
2395 | ||
2396 | return 0; | |
2397 | } | |
2398 | ||
3f542974 PS |
2399 | static int mos7840_calc_num_ports(struct usb_serial *serial) |
2400 | { | |
0eafe4de | 2401 | __u16 data = 0x00; |
093ea2d3 DL |
2402 | int mos7840_num_ports; |
2403 | ||
0eafe4de D |
2404 | usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), |
2405 | MCS_RDREQ, MCS_RD_RTYPE, 0, GPIO_REGISTER, &data, | |
093ea2d3 DL |
2406 | VENDOR_READ_LENGTH, MOS_WDR_TIMEOUT); |
2407 | ||
0eafe4de D |
2408 | if (serial->dev->descriptor.idProduct == MOSCHIP_DEVICE_ID_7810 || |
2409 | serial->dev->descriptor.idProduct == MOSCHIP_DEVICE_ID_7820) { | |
2410 | device_type = serial->dev->descriptor.idProduct; | |
093ea2d3 | 2411 | } else { |
0eafe4de D |
2412 | /* For a MCS7840 device GPIO0 must be set to 1 */ |
2413 | if ((data & 0x01) == 1) | |
2414 | device_type = MOSCHIP_DEVICE_ID_7840; | |
2415 | else if (mos7810_check(serial)) | |
2416 | device_type = MOSCHIP_DEVICE_ID_7810; | |
2417 | else | |
2418 | device_type = MOSCHIP_DEVICE_ID_7820; | |
3f542974 | 2419 | } |
093ea2d3 | 2420 | |
0eafe4de D |
2421 | mos7840_num_ports = (device_type >> 4) & 0x000F; |
2422 | serial->num_bulk_in = mos7840_num_ports; | |
2423 | serial->num_bulk_out = mos7840_num_ports; | |
2424 | serial->num_ports = mos7840_num_ports; | |
2425 | ||
3f542974 PS |
2426 | return mos7840_num_ports; |
2427 | } | |
2428 | ||
2429 | /**************************************************************************** | |
2430 | * mos7840_startup | |
2431 | ****************************************************************************/ | |
2432 | ||
2433 | static int mos7840_startup(struct usb_serial *serial) | |
2434 | { | |
2435 | struct moschip_port *mos7840_port; | |
2436 | struct usb_device *dev; | |
2437 | int i, status; | |
3f542974 | 2438 | __u16 Data; |
3f542974 PS |
2439 | |
2440 | if (!serial) { | |
84fe6e79 | 2441 | dbg("%s", "Invalid Handler"); |
3f542974 PS |
2442 | return -1; |
2443 | } | |
2444 | ||
2445 | dev = serial->dev; | |
2446 | ||
3f542974 PS |
2447 | /* we set up the pointers to the endpoints in the mos7840_open * |
2448 | * function, as the structures aren't created yet. */ | |
2449 | ||
2450 | /* set up port private structures */ | |
2451 | for (i = 0; i < serial->num_ports; ++i) { | |
84fe6e79 | 2452 | dbg ("mos7840_startup: configuring port %d............", i); |
7ac9da10 | 2453 | mos7840_port = kzalloc(sizeof(struct moschip_port), GFP_KERNEL); |
3f542974 | 2454 | if (mos7840_port == NULL) { |
194343d9 | 2455 | dev_err(&dev->dev, "%s - Out of memory\n", __func__); |
0de9a702 ON |
2456 | status = -ENOMEM; |
2457 | i--; /* don't follow NULL pointer cleaning up */ | |
2458 | goto error; | |
3f542974 | 2459 | } |
3f542974 | 2460 | |
880af9db AC |
2461 | /* Initialize all port interrupt end point to port 0 int |
2462 | * endpoint. Our device has only one interrupt end point | |
2463 | * common to all port */ | |
3f542974 PS |
2464 | |
2465 | mos7840_port->port = serial->port[i]; | |
2466 | mos7840_set_port_private(serial->port[i], mos7840_port); | |
0de9a702 | 2467 | spin_lock_init(&mos7840_port->pool_lock); |
3f542974 | 2468 | |
37768adf TC |
2469 | /* minor is not initialised until later by |
2470 | * usb-serial.c:get_free_serial() and cannot therefore be used | |
2471 | * to index device instances */ | |
2472 | mos7840_port->port_num = i + 1; | |
2473 | dbg ("serial->port[i]->number = %d", serial->port[i]->number); | |
2474 | dbg ("serial->port[i]->serial->minor = %d", serial->port[i]->serial->minor); | |
2475 | dbg ("mos7840_port->port_num = %d", mos7840_port->port_num); | |
2476 | dbg ("serial->minor = %d", serial->minor); | |
3f542974 PS |
2477 | |
2478 | if (mos7840_port->port_num == 1) { | |
2479 | mos7840_port->SpRegOffset = 0x0; | |
2480 | mos7840_port->ControlRegOffset = 0x1; | |
2481 | mos7840_port->DcrRegOffset = 0x4; | |
2482 | } else if ((mos7840_port->port_num == 2) | |
0de9a702 | 2483 | && (serial->num_ports == 4)) { |
3f542974 PS |
2484 | mos7840_port->SpRegOffset = 0x8; |
2485 | mos7840_port->ControlRegOffset = 0x9; | |
2486 | mos7840_port->DcrRegOffset = 0x16; | |
2487 | } else if ((mos7840_port->port_num == 2) | |
0de9a702 | 2488 | && (serial->num_ports == 2)) { |
3f542974 PS |
2489 | mos7840_port->SpRegOffset = 0xa; |
2490 | mos7840_port->ControlRegOffset = 0xb; | |
2491 | mos7840_port->DcrRegOffset = 0x19; | |
2492 | } else if ((mos7840_port->port_num == 3) | |
0de9a702 | 2493 | && (serial->num_ports == 4)) { |
3f542974 PS |
2494 | mos7840_port->SpRegOffset = 0xa; |
2495 | mos7840_port->ControlRegOffset = 0xb; | |
2496 | mos7840_port->DcrRegOffset = 0x19; | |
2497 | } else if ((mos7840_port->port_num == 4) | |
0de9a702 | 2498 | && (serial->num_ports == 4)) { |
3f542974 PS |
2499 | mos7840_port->SpRegOffset = 0xc; |
2500 | mos7840_port->ControlRegOffset = 0xd; | |
2501 | mos7840_port->DcrRegOffset = 0x1c; | |
2502 | } | |
2503 | mos7840_dump_serial_port(mos7840_port); | |
3f542974 PS |
2504 | mos7840_set_port_private(serial->port[i], mos7840_port); |
2505 | ||
880af9db AC |
2506 | /* enable rx_disable bit in control register */ |
2507 | status = mos7840_get_reg_sync(serial->port[i], | |
2508 | mos7840_port->ControlRegOffset, &Data); | |
3f542974 | 2509 | if (status < 0) { |
84fe6e79 | 2510 | dbg("Reading ControlReg failed status-0x%x", status); |
3f542974 PS |
2511 | break; |
2512 | } else | |
84fe6e79 | 2513 | dbg("ControlReg Reading success val is %x, status%d", |
3f542974 | 2514 | Data, status); |
880af9db AC |
2515 | Data |= 0x08; /* setting driver done bit */ |
2516 | Data |= 0x04; /* sp1_bit to have cts change reflect in | |
2517 | modem status reg */ | |
3f542974 | 2518 | |
880af9db AC |
2519 | /* Data |= 0x20; //rx_disable bit */ |
2520 | status = mos7840_set_reg_sync(serial->port[i], | |
3f542974 PS |
2521 | mos7840_port->ControlRegOffset, Data); |
2522 | if (status < 0) { | |
84fe6e79 | 2523 | dbg("Writing ControlReg failed(rx_disable) status-0x%x", status); |
3f542974 PS |
2524 | break; |
2525 | } else | |
84fe6e79 | 2526 | dbg("ControlReg Writing success(rx_disable) status%d", |
3f542974 PS |
2527 | status); |
2528 | ||
880af9db AC |
2529 | /* Write default values in DCR (i.e 0x01 in DCR0, 0x05 in DCR2 |
2530 | and 0x24 in DCR3 */ | |
3f542974 | 2531 | Data = 0x01; |
880af9db AC |
2532 | status = mos7840_set_reg_sync(serial->port[i], |
2533 | (__u16) (mos7840_port->DcrRegOffset + 0), Data); | |
3f542974 | 2534 | if (status < 0) { |
84fe6e79 | 2535 | dbg("Writing DCR0 failed status-0x%x", status); |
3f542974 PS |
2536 | break; |
2537 | } else | |
84fe6e79 | 2538 | dbg("DCR0 Writing success status%d", status); |
3f542974 PS |
2539 | |
2540 | Data = 0x05; | |
880af9db AC |
2541 | status = mos7840_set_reg_sync(serial->port[i], |
2542 | (__u16) (mos7840_port->DcrRegOffset + 1), Data); | |
3f542974 | 2543 | if (status < 0) { |
84fe6e79 | 2544 | dbg("Writing DCR1 failed status-0x%x", status); |
3f542974 PS |
2545 | break; |
2546 | } else | |
84fe6e79 | 2547 | dbg("DCR1 Writing success status%d", status); |
3f542974 PS |
2548 | |
2549 | Data = 0x24; | |
880af9db AC |
2550 | status = mos7840_set_reg_sync(serial->port[i], |
2551 | (__u16) (mos7840_port->DcrRegOffset + 2), Data); | |
3f542974 | 2552 | if (status < 0) { |
84fe6e79 | 2553 | dbg("Writing DCR2 failed status-0x%x", status); |
3f542974 PS |
2554 | break; |
2555 | } else | |
84fe6e79 | 2556 | dbg("DCR2 Writing success status%d", status); |
3f542974 | 2557 | |
880af9db | 2558 | /* write values in clkstart0x0 and clkmulti 0x20 */ |
3f542974 | 2559 | Data = 0x0; |
880af9db | 2560 | status = mos7840_set_reg_sync(serial->port[i], |
3f542974 PS |
2561 | CLK_START_VALUE_REGISTER, Data); |
2562 | if (status < 0) { | |
84fe6e79 | 2563 | dbg("Writing CLK_START_VALUE_REGISTER failed status-0x%x", status); |
3f542974 PS |
2564 | break; |
2565 | } else | |
84fe6e79 | 2566 | dbg("CLK_START_VALUE_REGISTER Writing success status%d", status); |
3f542974 PS |
2567 | |
2568 | Data = 0x20; | |
880af9db AC |
2569 | status = mos7840_set_reg_sync(serial->port[i], |
2570 | CLK_MULTI_REGISTER, Data); | |
3f542974 | 2571 | if (status < 0) { |
84fe6e79 | 2572 | dbg("Writing CLK_MULTI_REGISTER failed status-0x%x", |
3f542974 | 2573 | status); |
0de9a702 | 2574 | goto error; |
3f542974 | 2575 | } else |
84fe6e79 | 2576 | dbg("CLK_MULTI_REGISTER Writing success status%d", |
3f542974 PS |
2577 | status); |
2578 | ||
880af9db | 2579 | /* write value 0x0 to scratchpad register */ |
3f542974 | 2580 | Data = 0x00; |
880af9db AC |
2581 | status = mos7840_set_uart_reg(serial->port[i], |
2582 | SCRATCH_PAD_REGISTER, Data); | |
3f542974 | 2583 | if (status < 0) { |
84fe6e79 | 2584 | dbg("Writing SCRATCH_PAD_REGISTER failed status-0x%x", |
3f542974 PS |
2585 | status); |
2586 | break; | |
2587 | } else | |
84fe6e79 | 2588 | dbg("SCRATCH_PAD_REGISTER Writing success status%d", |
3f542974 PS |
2589 | status); |
2590 | ||
880af9db | 2591 | /* Zero Length flag register */ |
3f542974 | 2592 | if ((mos7840_port->port_num != 1) |
0de9a702 | 2593 | && (serial->num_ports == 2)) { |
3f542974 PS |
2594 | |
2595 | Data = 0xff; | |
3f542974 | 2596 | status = mos7840_set_reg_sync(serial->port[i], |
880af9db AC |
2597 | (__u16) (ZLP_REG1 + |
2598 | ((__u16)mos7840_port->port_num)), Data); | |
84fe6e79 | 2599 | dbg("ZLIP offset %x", |
3f542974 | 2600 | (__u16) (ZLP_REG1 + |
880af9db | 2601 | ((__u16) mos7840_port->port_num))); |
3f542974 | 2602 | if (status < 0) { |
84fe6e79 | 2603 | dbg("Writing ZLP_REG%d failed status-0x%x", |
3f542974 PS |
2604 | i + 2, status); |
2605 | break; | |
2606 | } else | |
84fe6e79 | 2607 | dbg("ZLP_REG%d Writing success status%d", |
3f542974 PS |
2608 | i + 2, status); |
2609 | } else { | |
2610 | Data = 0xff; | |
3f542974 | 2611 | status = mos7840_set_reg_sync(serial->port[i], |
880af9db AC |
2612 | (__u16) (ZLP_REG1 + |
2613 | ((__u16)mos7840_port->port_num) - 0x1), Data); | |
84fe6e79 | 2614 | dbg("ZLIP offset %x", |
3f542974 PS |
2615 | (__u16) (ZLP_REG1 + |
2616 | ((__u16) mos7840_port->port_num) - 0x1)); | |
2617 | if (status < 0) { | |
84fe6e79 | 2618 | dbg("Writing ZLP_REG%d failed status-0x%x", |
3f542974 PS |
2619 | i + 1, status); |
2620 | break; | |
2621 | } else | |
84fe6e79 | 2622 | dbg("ZLP_REG%d Writing success status%d", |
3f542974 PS |
2623 | i + 1, status); |
2624 | ||
2625 | } | |
0de9a702 | 2626 | mos7840_port->control_urb = usb_alloc_urb(0, GFP_KERNEL); |
3f542974 | 2627 | mos7840_port->ctrl_buf = kmalloc(16, GFP_KERNEL); |
880af9db AC |
2628 | mos7840_port->dr = kmalloc(sizeof(struct usb_ctrlrequest), |
2629 | GFP_KERNEL); | |
2630 | if (!mos7840_port->control_urb || !mos7840_port->ctrl_buf || | |
2631 | !mos7840_port->dr) { | |
0de9a702 ON |
2632 | status = -ENOMEM; |
2633 | goto error; | |
2634 | } | |
0eafe4de D |
2635 | |
2636 | mos7840_port->has_led = false; | |
2637 | ||
2638 | /* Initialize LED timers */ | |
2639 | if (device_type == MOSCHIP_DEVICE_ID_7810) { | |
2640 | mos7840_port->has_led = true; | |
2641 | ||
2642 | init_timer(&mos7840_port->led_timer1); | |
2643 | mos7840_port->led_timer1.function = mos7840_led_off; | |
2644 | mos7840_port->led_timer1.expires = | |
2645 | jiffies + msecs_to_jiffies(LED_ON_MS); | |
2646 | mos7840_port->led_timer1.data = | |
2647 | (unsigned long)mos7840_port; | |
2648 | ||
2649 | init_timer(&mos7840_port->led_timer2); | |
2650 | mos7840_port->led_timer2.function = | |
2651 | mos7840_led_flag_off; | |
2652 | mos7840_port->led_timer2.expires = | |
2653 | jiffies + msecs_to_jiffies(LED_OFF_MS); | |
2654 | mos7840_port->led_timer2.data = | |
2655 | (unsigned long)mos7840_port; | |
2656 | ||
2657 | mos7840_port->led_flag = false; | |
2658 | ||
2659 | /* Turn off LED */ | |
2660 | mos7840_set_led_sync(serial->port[i], | |
2661 | MODEM_CONTROL_REGISTER, 0x0300); | |
2662 | } | |
3f542974 | 2663 | } |
84fe6e79 | 2664 | dbg ("mos7840_startup: all ports configured..........."); |
3f542974 | 2665 | |
880af9db | 2666 | /* Zero Length flag enable */ |
3f542974 | 2667 | Data = 0x0f; |
3f542974 PS |
2668 | status = mos7840_set_reg_sync(serial->port[0], ZLP_REG5, Data); |
2669 | if (status < 0) { | |
84fe6e79 | 2670 | dbg("Writing ZLP_REG5 failed status-0x%x", status); |
7ced46c3 | 2671 | goto error; |
3f542974 | 2672 | } else |
84fe6e79 | 2673 | dbg("ZLP_REG5 Writing success status%d", status); |
3f542974 PS |
2674 | |
2675 | /* setting configuration feature to one */ | |
2676 | usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), | |
1e658489 | 2677 | (__u8) 0x03, 0x00, 0x01, 0x00, NULL, 0x00, MOS_WDR_TIMEOUT); |
3f542974 | 2678 | return 0; |
0de9a702 ON |
2679 | error: |
2680 | for (/* nothing */; i >= 0; i--) { | |
2681 | mos7840_port = mos7840_get_port_private(serial->port[i]); | |
2682 | ||
2683 | kfree(mos7840_port->dr); | |
2684 | kfree(mos7840_port->ctrl_buf); | |
2685 | usb_free_urb(mos7840_port->control_urb); | |
2686 | kfree(mos7840_port); | |
2687 | serial->port[i] = NULL; | |
2688 | } | |
2689 | return status; | |
3f542974 PS |
2690 | } |
2691 | ||
2692 | /**************************************************************************** | |
f9c99bb8 | 2693 | * mos7840_disconnect |
3f542974 PS |
2694 | * This function is called whenever the device is removed from the usb bus. |
2695 | ****************************************************************************/ | |
2696 | ||
f9c99bb8 | 2697 | static void mos7840_disconnect(struct usb_serial *serial) |
3f542974 PS |
2698 | { |
2699 | int i; | |
0de9a702 | 2700 | unsigned long flags; |
3f542974 | 2701 | struct moschip_port *mos7840_port; |
3f542974 PS |
2702 | |
2703 | if (!serial) { | |
84fe6e79 | 2704 | dbg("%s", "Invalid Handler"); |
3f542974 PS |
2705 | return; |
2706 | } | |
2707 | ||
880af9db | 2708 | /* check for the ports to be closed,close the ports and disconnect */ |
3f542974 PS |
2709 | |
2710 | /* free private structure allocated for serial port * | |
2711 | * stop reads and writes on all ports */ | |
2712 | ||
2713 | for (i = 0; i < serial->num_ports; ++i) { | |
2714 | mos7840_port = mos7840_get_port_private(serial->port[i]); | |
37768adf TC |
2715 | dbg ("mos7840_port %d = %p", i, mos7840_port); |
2716 | if (mos7840_port) { | |
2717 | spin_lock_irqsave(&mos7840_port->pool_lock, flags); | |
2718 | mos7840_port->zombie = 1; | |
2719 | spin_unlock_irqrestore(&mos7840_port->pool_lock, flags); | |
2720 | usb_kill_urb(mos7840_port->control_urb); | |
f9c99bb8 AS |
2721 | } |
2722 | } | |
f9c99bb8 AS |
2723 | } |
2724 | ||
2725 | /**************************************************************************** | |
2726 | * mos7840_release | |
2727 | * This function is called when the usb_serial structure is freed. | |
2728 | ****************************************************************************/ | |
2729 | ||
2730 | static void mos7840_release(struct usb_serial *serial) | |
2731 | { | |
2732 | int i; | |
2733 | struct moschip_port *mos7840_port; | |
f9c99bb8 AS |
2734 | |
2735 | if (!serial) { | |
2736 | dbg("%s", "Invalid Handler"); | |
2737 | return; | |
2738 | } | |
2739 | ||
2740 | /* check for the ports to be closed,close the ports and disconnect */ | |
2741 | ||
2742 | /* free private structure allocated for serial port * | |
2743 | * stop reads and writes on all ports */ | |
2744 | ||
2745 | for (i = 0; i < serial->num_ports; ++i) { | |
2746 | mos7840_port = mos7840_get_port_private(serial->port[i]); | |
2747 | dbg("mos7840_port %d = %p", i, mos7840_port); | |
2748 | if (mos7840_port) { | |
0eafe4de D |
2749 | if (mos7840_port->has_led) { |
2750 | /* Turn off LED */ | |
2751 | mos7840_set_led_sync(mos7840_port->port, | |
2752 | MODEM_CONTROL_REGISTER, 0x0300); | |
2753 | ||
2754 | del_timer_sync(&mos7840_port->led_timer1); | |
2755 | del_timer_sync(&mos7840_port->led_timer2); | |
2756 | } | |
37768adf TC |
2757 | kfree(mos7840_port->ctrl_buf); |
2758 | kfree(mos7840_port->dr); | |
2759 | kfree(mos7840_port); | |
2760 | } | |
3f542974 | 2761 | } |
3f542974 PS |
2762 | } |
2763 | ||
2764 | static struct usb_serial_driver moschip7840_4port_device = { | |
2765 | .driver = { | |
2766 | .owner = THIS_MODULE, | |
2767 | .name = "mos7840", | |
2768 | }, | |
2769 | .description = DRIVER_DESC, | |
68e24113 | 2770 | .id_table = id_table, |
3f542974 | 2771 | .num_ports = 4, |
3f542974 PS |
2772 | .open = mos7840_open, |
2773 | .close = mos7840_close, | |
2774 | .write = mos7840_write, | |
2775 | .write_room = mos7840_write_room, | |
2776 | .chars_in_buffer = mos7840_chars_in_buffer, | |
2777 | .throttle = mos7840_throttle, | |
2778 | .unthrottle = mos7840_unthrottle, | |
2779 | .calc_num_ports = mos7840_calc_num_ports, | |
2780 | #ifdef MCSSerialProbe | |
2781 | .probe = mos7840_serial_probe, | |
2782 | #endif | |
2783 | .ioctl = mos7840_ioctl, | |
2784 | .set_termios = mos7840_set_termios, | |
2785 | .break_ctl = mos7840_break, | |
2786 | .tiocmget = mos7840_tiocmget, | |
2787 | .tiocmset = mos7840_tiocmset, | |
0bca1b91 | 2788 | .get_icount = mos7840_get_icount, |
3f542974 | 2789 | .attach = mos7840_startup, |
f9c99bb8 AS |
2790 | .disconnect = mos7840_disconnect, |
2791 | .release = mos7840_release, | |
3f542974 PS |
2792 | .read_bulk_callback = mos7840_bulk_in_callback, |
2793 | .read_int_callback = mos7840_interrupt_callback, | |
2794 | }; | |
2795 | ||
4d2a7aff AS |
2796 | static struct usb_serial_driver * const serial_drivers[] = { |
2797 | &moschip7840_4port_device, NULL | |
2798 | }; | |
2799 | ||
68e24113 | 2800 | module_usb_serial_driver(serial_drivers, id_table); |
3f542974 | 2801 | |
3f542974 PS |
2802 | MODULE_DESCRIPTION(DRIVER_DESC); |
2803 | MODULE_LICENSE("GPL"); | |
2804 | ||
2805 | module_param(debug, bool, S_IRUGO | S_IWUSR); | |
2806 | MODULE_PARM_DESC(debug, "Debug enabled or not"); |