Commit | Line | Data |
---|---|---|
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 | 37 | |
3f542974 PS |
38 | #define DRIVER_DESC "Moschip 7840/7820 USB Serial Driver" |
39 | ||
40 | /* | |
41 | * 16C50 UART register defines | |
42 | */ | |
43 | ||
44 | #define LCR_BITS_5 0x00 /* 5 bits/char */ | |
45 | #define LCR_BITS_6 0x01 /* 6 bits/char */ | |
46 | #define LCR_BITS_7 0x02 /* 7 bits/char */ | |
47 | #define LCR_BITS_8 0x03 /* 8 bits/char */ | |
48 | #define LCR_BITS_MASK 0x03 /* Mask for bits/char field */ | |
49 | ||
50 | #define LCR_STOP_1 0x00 /* 1 stop bit */ | |
51 | #define LCR_STOP_1_5 0x04 /* 1.5 stop bits (if 5 bits/char) */ | |
52 | #define LCR_STOP_2 0x04 /* 2 stop bits (if 6-8 bits/char) */ | |
53 | #define LCR_STOP_MASK 0x04 /* Mask for stop bits field */ | |
54 | ||
55 | #define LCR_PAR_NONE 0x00 /* No parity */ | |
56 | #define LCR_PAR_ODD 0x08 /* Odd parity */ | |
57 | #define LCR_PAR_EVEN 0x18 /* Even parity */ | |
58 | #define LCR_PAR_MARK 0x28 /* Force parity bit to 1 */ | |
59 | #define LCR_PAR_SPACE 0x38 /* Force parity bit to 0 */ | |
60 | #define LCR_PAR_MASK 0x38 /* Mask for parity field */ | |
61 | ||
62 | #define LCR_SET_BREAK 0x40 /* Set Break condition */ | |
63 | #define LCR_DL_ENABLE 0x80 /* Enable access to divisor latch */ | |
64 | ||
65 | #define MCR_DTR 0x01 /* Assert DTR */ | |
66 | #define MCR_RTS 0x02 /* Assert RTS */ | |
67 | #define MCR_OUT1 0x04 /* Loopback only: Sets state of RI */ | |
68 | #define MCR_MASTER_IE 0x08 /* Enable interrupt outputs */ | |
69 | #define MCR_LOOPBACK 0x10 /* Set internal (digital) loopback mode */ | |
70 | #define MCR_XON_ANY 0x20 /* Enable any char to exit XOFF mode */ | |
71 | ||
72 | #define MOS7840_MSR_CTS 0x10 /* Current state of CTS */ | |
73 | #define MOS7840_MSR_DSR 0x20 /* Current state of DSR */ | |
74 | #define MOS7840_MSR_RI 0x40 /* Current state of RI */ | |
75 | #define MOS7840_MSR_CD 0x80 /* Current state of CD */ | |
76 | ||
77 | /* | |
78 | * Defines used for sending commands to port | |
79 | */ | |
80 | ||
1e658489 | 81 | #define MOS_WDR_TIMEOUT 5000 /* default urb timeout */ |
3f542974 PS |
82 | |
83 | #define MOS_PORT1 0x0200 | |
84 | #define MOS_PORT2 0x0300 | |
85 | #define MOS_VENREG 0x0000 | |
86 | #define MOS_MAX_PORT 0x02 | |
87 | #define MOS_WRITE 0x0E | |
88 | #define MOS_READ 0x0D | |
89 | ||
90 | /* Requests */ | |
91 | #define MCS_RD_RTYPE 0xC0 | |
92 | #define MCS_WR_RTYPE 0x40 | |
93 | #define MCS_RDREQ 0x0D | |
94 | #define MCS_WRREQ 0x0E | |
95 | #define MCS_CTRL_TIMEOUT 500 | |
96 | #define VENDOR_READ_LENGTH (0x01) | |
97 | ||
98 | #define MAX_NAME_LEN 64 | |
99 | ||
880af9db AC |
100 | #define ZLP_REG1 0x3A /* Zero_Flag_Reg1 58 */ |
101 | #define ZLP_REG5 0x3E /* Zero_Flag_Reg5 62 */ | |
3f542974 PS |
102 | |
103 | /* For higher baud Rates use TIOCEXBAUD */ | |
104 | #define TIOCEXBAUD 0x5462 | |
105 | ||
106 | /* vendor id and device id defines */ | |
107 | ||
11e1abb4 | 108 | /* The native mos7840/7820 component */ |
3f542974 PS |
109 | #define USB_VENDOR_ID_MOSCHIP 0x9710 |
110 | #define MOSCHIP_DEVICE_ID_7840 0x7840 | |
111 | #define MOSCHIP_DEVICE_ID_7820 0x7820 | |
0eafe4de | 112 | #define MOSCHIP_DEVICE_ID_7810 0x7810 |
11e1abb4 DL |
113 | /* The native component can have its vendor/device id's overridden |
114 | * in vendor-specific implementations. Such devices can be handled | |
68e24113 | 115 | * by making a change here, in id_table. |
11e1abb4 | 116 | */ |
870408c8 DL |
117 | #define USB_VENDOR_ID_BANDB 0x0856 |
118 | #define BANDB_DEVICE_ID_USO9ML2_2 0xAC22 | |
119 | #define BANDB_DEVICE_ID_USO9ML2_2P 0xBC00 | |
120 | #define BANDB_DEVICE_ID_USO9ML2_4 0xAC24 | |
121 | #define BANDB_DEVICE_ID_USO9ML2_4P 0xBC01 | |
122 | #define BANDB_DEVICE_ID_US9ML2_2 0xAC29 | |
123 | #define BANDB_DEVICE_ID_US9ML2_4 0xAC30 | |
124 | #define BANDB_DEVICE_ID_USPTL4_2 0xAC31 | |
125 | #define BANDB_DEVICE_ID_USPTL4_4 0xAC32 | |
126 | #define BANDB_DEVICE_ID_USOPTL4_2 0xAC42 | |
127 | #define BANDB_DEVICE_ID_USOPTL4_2P 0xBC02 | |
128 | #define BANDB_DEVICE_ID_USOPTL4_4 0xAC44 | |
129 | #define BANDB_DEVICE_ID_USOPTL4_4P 0xBC03 | |
130 | #define BANDB_DEVICE_ID_USOPTL2_4 0xAC24 | |
3f542974 | 131 | |
9d498bea RL |
132 | /* This driver also supports |
133 | * ATEN UC2324 device using Moschip MCS7840 | |
134 | * ATEN UC2322 device using Moschip MCS7820 | |
135 | */ | |
e9b8cffa TC |
136 | #define USB_VENDOR_ID_ATENINTL 0x0557 |
137 | #define ATENINTL_DEVICE_ID_UC2324 0x2011 | |
9d498bea | 138 | #define ATENINTL_DEVICE_ID_UC2322 0x7820 |
e9b8cffa | 139 | |
11e1abb4 | 140 | /* Interrupt Routine Defines */ |
3f542974 PS |
141 | |
142 | #define SERIAL_IIR_RLS 0x06 | |
143 | #define SERIAL_IIR_MS 0x00 | |
144 | ||
145 | /* | |
146 | * Emulation of the bit mask on the LINE STATUS REGISTER. | |
147 | */ | |
148 | #define SERIAL_LSR_DR 0x0001 | |
149 | #define SERIAL_LSR_OE 0x0002 | |
150 | #define SERIAL_LSR_PE 0x0004 | |
151 | #define SERIAL_LSR_FE 0x0008 | |
152 | #define SERIAL_LSR_BI 0x0010 | |
153 | ||
154 | #define MOS_MSR_DELTA_CTS 0x10 | |
155 | #define MOS_MSR_DELTA_DSR 0x20 | |
156 | #define MOS_MSR_DELTA_RI 0x40 | |
157 | #define MOS_MSR_DELTA_CD 0x80 | |
158 | ||
880af9db | 159 | /* Serial Port register Address */ |
3f542974 PS |
160 | #define INTERRUPT_ENABLE_REGISTER ((__u16)(0x01)) |
161 | #define FIFO_CONTROL_REGISTER ((__u16)(0x02)) | |
162 | #define LINE_CONTROL_REGISTER ((__u16)(0x03)) | |
163 | #define MODEM_CONTROL_REGISTER ((__u16)(0x04)) | |
164 | #define LINE_STATUS_REGISTER ((__u16)(0x05)) | |
165 | #define MODEM_STATUS_REGISTER ((__u16)(0x06)) | |
166 | #define SCRATCH_PAD_REGISTER ((__u16)(0x07)) | |
167 | #define DIVISOR_LATCH_LSB ((__u16)(0x00)) | |
168 | #define DIVISOR_LATCH_MSB ((__u16)(0x01)) | |
169 | ||
170 | #define CLK_MULTI_REGISTER ((__u16)(0x02)) | |
171 | #define CLK_START_VALUE_REGISTER ((__u16)(0x03)) | |
093ea2d3 | 172 | #define GPIO_REGISTER ((__u16)(0x07)) |
3f542974 PS |
173 | |
174 | #define SERIAL_LCR_DLAB ((__u16)(0x0080)) | |
175 | ||
176 | /* | |
177 | * URB POOL related defines | |
178 | */ | |
179 | #define NUM_URBS 16 /* URB Count */ | |
180 | #define URB_TRANSFER_BUFFER_SIZE 32 /* URB Size */ | |
181 | ||
0eafe4de D |
182 | /* LED on/off milliseconds*/ |
183 | #define LED_ON_MS 500 | |
184 | #define LED_OFF_MS 500 | |
185 | ||
186 | static int device_type; | |
3f542974 | 187 | |
b9c87663 | 188 | static const struct usb_device_id id_table[] = { |
3f542974 PS |
189 | {USB_DEVICE(USB_VENDOR_ID_MOSCHIP, MOSCHIP_DEVICE_ID_7840)}, |
190 | {USB_DEVICE(USB_VENDOR_ID_MOSCHIP, MOSCHIP_DEVICE_ID_7820)}, | |
0eafe4de | 191 | {USB_DEVICE(USB_VENDOR_ID_MOSCHIP, MOSCHIP_DEVICE_ID_7810)}, |
acf509ae | 192 | {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USO9ML2_2)}, |
870408c8 | 193 | {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USO9ML2_2P)}, |
acf509ae | 194 | {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USO9ML2_4)}, |
870408c8 | 195 | {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USO9ML2_4P)}, |
acf509ae CB |
196 | {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_US9ML2_2)}, |
197 | {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_US9ML2_4)}, | |
198 | {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USPTL4_2)}, | |
199 | {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USPTL4_4)}, | |
11e1abb4 | 200 | {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USOPTL4_2)}, |
870408c8 | 201 | {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USOPTL4_2P)}, |
acf509ae | 202 | {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USOPTL4_4)}, |
870408c8 | 203 | {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USOPTL4_4P)}, |
27f1281d | 204 | {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USOPTL2_4)}, |
e9b8cffa | 205 | {USB_DEVICE(USB_VENDOR_ID_ATENINTL, ATENINTL_DEVICE_ID_UC2324)}, |
9d498bea | 206 | {USB_DEVICE(USB_VENDOR_ID_ATENINTL, ATENINTL_DEVICE_ID_UC2322)}, |
3f542974 PS |
207 | {} /* terminating entry */ |
208 | }; | |
68e24113 | 209 | MODULE_DEVICE_TABLE(usb, id_table); |
3f542974 PS |
210 | |
211 | /* This structure holds all of the local port information */ | |
212 | ||
213 | struct moschip_port { | |
214 | int port_num; /*Actual port number in the device(1,2,etc) */ | |
215 | struct urb *write_urb; /* write URB for this port */ | |
216 | struct urb *read_urb; /* read URB for this port */ | |
217 | __u8 shadowLCR; /* last LCR value received */ | |
218 | __u8 shadowMCR; /* last MCR value received */ | |
219 | char open; | |
0de9a702 | 220 | char open_ports; |
3f542974 | 221 | wait_queue_head_t wait_chase; /* for handling sleeping while waiting for chase to finish */ |
3f542974 PS |
222 | struct usb_serial_port *port; /* loop back to the owner of this object */ |
223 | ||
880af9db | 224 | /* Offsets */ |
3f542974 PS |
225 | __u8 SpRegOffset; |
226 | __u8 ControlRegOffset; | |
227 | __u8 DcrRegOffset; | |
880af9db | 228 | /* for processing control URBS in interrupt context */ |
3f542974 | 229 | struct urb *control_urb; |
0de9a702 | 230 | struct usb_ctrlrequest *dr; |
3f542974 PS |
231 | char *ctrl_buf; |
232 | int MsrLsr; | |
233 | ||
0de9a702 | 234 | spinlock_t pool_lock; |
3f542974 | 235 | struct urb *write_urb_pool[NUM_URBS]; |
0de9a702 | 236 | char busy[NUM_URBS]; |
50de36f7 | 237 | bool read_urb_busy; |
3f542974 | 238 | |
0eafe4de D |
239 | /* For device(s) with LED indicator */ |
240 | bool has_led; | |
241 | bool led_flag; | |
242 | struct timer_list led_timer1; /* Timer for LED on */ | |
243 | struct timer_list led_timer2; /* Timer for LED off */ | |
244 | }; | |
3f542974 | 245 | |
3f542974 PS |
246 | /* |
247 | * mos7840_set_reg_sync | |
248 | * To set the Control register by calling usb_fill_control_urb function | |
249 | * by passing usb_sndctrlpipe function as parameter. | |
250 | */ | |
251 | ||
252 | static int mos7840_set_reg_sync(struct usb_serial_port *port, __u16 reg, | |
253 | __u16 val) | |
254 | { | |
255 | struct usb_device *dev = port->serial->dev; | |
256 | val = val & 0x00ff; | |
9c134a14 | 257 | dev_dbg(&port->dev, "mos7840_set_reg_sync offset is %x, value %x\n", reg, val); |
3f542974 PS |
258 | |
259 | return usb_control_msg(dev, usb_sndctrlpipe(dev, 0), MCS_WRREQ, | |
260 | MCS_WR_RTYPE, val, reg, NULL, 0, | |
261 | MOS_WDR_TIMEOUT); | |
262 | } | |
263 | ||
264 | /* | |
265 | * mos7840_get_reg_sync | |
266 | * To set the Uart register by calling usb_fill_control_urb function by | |
267 | * passing usb_rcvctrlpipe function as parameter. | |
268 | */ | |
269 | ||
270 | static int mos7840_get_reg_sync(struct usb_serial_port *port, __u16 reg, | |
880af9db | 271 | __u16 *val) |
3f542974 PS |
272 | { |
273 | struct usb_device *dev = port->serial->dev; | |
274 | int ret = 0; | |
9e221a35 JH |
275 | u8 *buf; |
276 | ||
277 | buf = kmalloc(VENDOR_READ_LENGTH, GFP_KERNEL); | |
278 | if (!buf) | |
279 | return -ENOMEM; | |
3f542974 PS |
280 | |
281 | ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), MCS_RDREQ, | |
9e221a35 | 282 | MCS_RD_RTYPE, 0, reg, buf, VENDOR_READ_LENGTH, |
3f542974 | 283 | MOS_WDR_TIMEOUT); |
9e221a35 | 284 | *val = buf[0]; |
9c134a14 | 285 | dev_dbg(&port->dev, "%s offset is %x, return val %x\n", __func__, reg, *val); |
9e221a35 JH |
286 | |
287 | kfree(buf); | |
3f542974 PS |
288 | return ret; |
289 | } | |
290 | ||
291 | /* | |
292 | * mos7840_set_uart_reg | |
293 | * To set the Uart register by calling usb_fill_control_urb function by | |
294 | * passing usb_sndctrlpipe function as parameter. | |
295 | */ | |
296 | ||
297 | static int mos7840_set_uart_reg(struct usb_serial_port *port, __u16 reg, | |
298 | __u16 val) | |
299 | { | |
300 | ||
301 | struct usb_device *dev = port->serial->dev; | |
302 | val = val & 0x00ff; | |
880af9db AC |
303 | /* For the UART control registers, the application number need |
304 | to be Or'ed */ | |
0de9a702 | 305 | if (port->serial->num_ports == 4) { |
1143832e | 306 | val |= ((__u16)port->port_number + 1) << 8; |
3f542974 | 307 | } else { |
1143832e GKH |
308 | if (port->port_number == 0) { |
309 | val |= ((__u16)port->port_number + 1) << 8; | |
3f542974 | 310 | } else { |
1143832e | 311 | val |= ((__u16)port->port_number + 2) << 8; |
3f542974 PS |
312 | } |
313 | } | |
9c134a14 | 314 | dev_dbg(&port->dev, "%s application number is %x\n", __func__, val); |
3f542974 PS |
315 | return usb_control_msg(dev, usb_sndctrlpipe(dev, 0), MCS_WRREQ, |
316 | MCS_WR_RTYPE, val, reg, NULL, 0, | |
317 | MOS_WDR_TIMEOUT); | |
318 | ||
319 | } | |
320 | ||
321 | /* | |
322 | * mos7840_get_uart_reg | |
323 | * To set the Control register by calling usb_fill_control_urb function | |
324 | * by passing usb_rcvctrlpipe function as parameter. | |
325 | */ | |
326 | static int mos7840_get_uart_reg(struct usb_serial_port *port, __u16 reg, | |
880af9db | 327 | __u16 *val) |
3f542974 PS |
328 | { |
329 | struct usb_device *dev = port->serial->dev; | |
330 | int ret = 0; | |
331 | __u16 Wval; | |
9e221a35 JH |
332 | u8 *buf; |
333 | ||
334 | buf = kmalloc(VENDOR_READ_LENGTH, GFP_KERNEL); | |
335 | if (!buf) | |
336 | return -ENOMEM; | |
3f542974 | 337 | |
880af9db | 338 | /* Wval is same as application number */ |
0de9a702 | 339 | if (port->serial->num_ports == 4) { |
1143832e | 340 | Wval = ((__u16)port->port_number + 1) << 8; |
3f542974 | 341 | } else { |
1143832e GKH |
342 | if (port->port_number == 0) { |
343 | Wval = ((__u16)port->port_number + 1) << 8; | |
3f542974 | 344 | } else { |
1143832e | 345 | Wval = ((__u16)port->port_number + 2) << 8; |
3f542974 PS |
346 | } |
347 | } | |
9c134a14 | 348 | dev_dbg(&port->dev, "%s application number is %x\n", __func__, Wval); |
3f542974 | 349 | ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), MCS_RDREQ, |
9e221a35 | 350 | MCS_RD_RTYPE, Wval, reg, buf, VENDOR_READ_LENGTH, |
3f542974 | 351 | MOS_WDR_TIMEOUT); |
9e221a35 JH |
352 | *val = buf[0]; |
353 | ||
354 | kfree(buf); | |
3f542974 PS |
355 | return ret; |
356 | } | |
357 | ||
9c134a14 GKH |
358 | static void mos7840_dump_serial_port(struct usb_serial_port *port, |
359 | struct moschip_port *mos7840_port) | |
3f542974 PS |
360 | { |
361 | ||
9c134a14 GKH |
362 | dev_dbg(&port->dev, "SpRegOffset is %2x\n", mos7840_port->SpRegOffset); |
363 | dev_dbg(&port->dev, "ControlRegOffset is %2x\n", mos7840_port->ControlRegOffset); | |
364 | dev_dbg(&port->dev, "DCRRegOffset is %2x\n", mos7840_port->DcrRegOffset); | |
3f542974 PS |
365 | |
366 | } | |
367 | ||
368 | /************************************************************************/ | |
369 | /************************************************************************/ | |
370 | /* I N T E R F A C E F U N C T I O N S */ | |
371 | /* I N T E R F A C E F U N C T I O N S */ | |
372 | /************************************************************************/ | |
373 | /************************************************************************/ | |
374 | ||
375 | static inline void mos7840_set_port_private(struct usb_serial_port *port, | |
376 | struct moschip_port *data) | |
377 | { | |
378 | usb_set_serial_port_data(port, (void *)data); | |
379 | } | |
380 | ||
381 | static inline struct moschip_port *mos7840_get_port_private(struct | |
382 | usb_serial_port | |
383 | *port) | |
384 | { | |
385 | return (struct moschip_port *)usb_get_serial_port_data(port); | |
386 | } | |
387 | ||
0de9a702 | 388 | static void mos7840_handle_new_msr(struct moschip_port *port, __u8 new_msr) |
3f542974 PS |
389 | { |
390 | struct moschip_port *mos7840_port; | |
391 | struct async_icount *icount; | |
392 | mos7840_port = port; | |
3f542974 PS |
393 | if (new_msr & |
394 | (MOS_MSR_DELTA_CTS | MOS_MSR_DELTA_DSR | MOS_MSR_DELTA_RI | | |
395 | MOS_MSR_DELTA_CD)) { | |
8c1a07ff | 396 | icount = &mos7840_port->port->icount; |
3f542974 PS |
397 | |
398 | /* update input line counters */ | |
c9fac853 | 399 | if (new_msr & MOS_MSR_DELTA_CTS) |
3f542974 | 400 | icount->cts++; |
c9fac853 | 401 | if (new_msr & MOS_MSR_DELTA_DSR) |
3f542974 | 402 | icount->dsr++; |
c9fac853 | 403 | if (new_msr & MOS_MSR_DELTA_CD) |
3f542974 | 404 | icount->dcd++; |
c9fac853 | 405 | if (new_msr & MOS_MSR_DELTA_RI) |
3f542974 | 406 | icount->rng++; |
e670c6af | 407 | |
0c613371 | 408 | wake_up_interruptible(&port->port->port.delta_msr_wait); |
3f542974 | 409 | } |
3f542974 PS |
410 | } |
411 | ||
0de9a702 | 412 | static void mos7840_handle_new_lsr(struct moschip_port *port, __u8 new_lsr) |
3f542974 PS |
413 | { |
414 | struct async_icount *icount; | |
415 | ||
3f542974 | 416 | if (new_lsr & SERIAL_LSR_BI) { |
880af9db AC |
417 | /* |
418 | * Parity and Framing errors only count if they | |
419 | * occur exclusive of a break being | |
420 | * received. | |
421 | */ | |
3f542974 PS |
422 | new_lsr &= (__u8) (SERIAL_LSR_OE | SERIAL_LSR_BI); |
423 | } | |
424 | ||
425 | /* update input line counters */ | |
8c1a07ff | 426 | icount = &port->port->icount; |
c9fac853 | 427 | if (new_lsr & SERIAL_LSR_BI) |
3f542974 | 428 | icount->brk++; |
c9fac853 | 429 | if (new_lsr & SERIAL_LSR_OE) |
3f542974 | 430 | icount->overrun++; |
c9fac853 | 431 | if (new_lsr & SERIAL_LSR_PE) |
3f542974 | 432 | icount->parity++; |
c9fac853 | 433 | if (new_lsr & SERIAL_LSR_FE) |
3f542974 | 434 | icount->frame++; |
3f542974 PS |
435 | } |
436 | ||
437 | /************************************************************************/ | |
438 | /************************************************************************/ | |
439 | /* U S B C A L L B A C K F U N C T I O N S */ | |
440 | /* U S B C A L L B A C K F U N C T I O N S */ | |
441 | /************************************************************************/ | |
442 | /************************************************************************/ | |
443 | ||
7d12e780 | 444 | static void mos7840_control_callback(struct urb *urb) |
3f542974 PS |
445 | { |
446 | unsigned char *data; | |
447 | struct moschip_port *mos7840_port; | |
9c134a14 | 448 | struct device *dev = &urb->dev->dev; |
3f542974 | 449 | __u8 regval = 0x0; |
0643c724 | 450 | int status = urb->status; |
3f542974 | 451 | |
cdc97792 | 452 | mos7840_port = urb->context; |
0de9a702 | 453 | |
0643c724 | 454 | switch (status) { |
3f542974 PS |
455 | case 0: |
456 | /* success */ | |
457 | break; | |
458 | case -ECONNRESET: | |
459 | case -ENOENT: | |
460 | case -ESHUTDOWN: | |
461 | /* this urb is terminated, clean up */ | |
9c134a14 | 462 | dev_dbg(dev, "%s - urb shutting down with status: %d\n", __func__, status); |
3f542974 PS |
463 | return; |
464 | default: | |
9c134a14 | 465 | dev_dbg(dev, "%s - nonzero urb status received: %d\n", __func__, status); |
28c3ae9a | 466 | return; |
3f542974 PS |
467 | } |
468 | ||
9c134a14 GKH |
469 | dev_dbg(dev, "%s urb buffer size is %d\n", __func__, urb->actual_length); |
470 | dev_dbg(dev, "%s mos7840_port->MsrLsr is %d port %d\n", __func__, | |
471 | mos7840_port->MsrLsr, mos7840_port->port_num); | |
3f542974 PS |
472 | data = urb->transfer_buffer; |
473 | regval = (__u8) data[0]; | |
9c134a14 | 474 | dev_dbg(dev, "%s data is %x\n", __func__, regval); |
3f542974 PS |
475 | if (mos7840_port->MsrLsr == 0) |
476 | mos7840_handle_new_msr(mos7840_port, regval); | |
477 | else if (mos7840_port->MsrLsr == 1) | |
478 | mos7840_handle_new_lsr(mos7840_port, regval); | |
3f542974 PS |
479 | } |
480 | ||
481 | static int mos7840_get_reg(struct moschip_port *mcs, __u16 Wval, __u16 reg, | |
880af9db | 482 | __u16 *val) |
3f542974 PS |
483 | { |
484 | struct usb_device *dev = mcs->port->serial->dev; | |
0de9a702 ON |
485 | struct usb_ctrlrequest *dr = mcs->dr; |
486 | unsigned char *buffer = mcs->ctrl_buf; | |
487 | int ret; | |
3f542974 | 488 | |
3f542974 PS |
489 | dr->bRequestType = MCS_RD_RTYPE; |
490 | dr->bRequest = MCS_RDREQ; | |
880af9db | 491 | dr->wValue = cpu_to_le16(Wval); /* 0 */ |
3f542974 PS |
492 | dr->wIndex = cpu_to_le16(reg); |
493 | dr->wLength = cpu_to_le16(2); | |
494 | ||
495 | usb_fill_control_urb(mcs->control_urb, dev, usb_rcvctrlpipe(dev, 0), | |
496 | (unsigned char *)dr, buffer, 2, | |
497 | mos7840_control_callback, mcs); | |
498 | mcs->control_urb->transfer_buffer_length = 2; | |
499 | ret = usb_submit_urb(mcs->control_urb, GFP_ATOMIC); | |
500 | return ret; | |
501 | } | |
502 | ||
0eafe4de D |
503 | static void mos7840_set_led_callback(struct urb *urb) |
504 | { | |
505 | switch (urb->status) { | |
506 | case 0: | |
507 | /* Success */ | |
508 | break; | |
509 | case -ECONNRESET: | |
510 | case -ENOENT: | |
511 | case -ESHUTDOWN: | |
512 | /* This urb is terminated, clean up */ | |
9c134a14 GKH |
513 | dev_dbg(&urb->dev->dev, "%s - urb shutting down with status: %d", |
514 | __func__, urb->status); | |
0eafe4de D |
515 | break; |
516 | default: | |
9c134a14 GKH |
517 | dev_dbg(&urb->dev->dev, "%s - nonzero urb status received: %d", |
518 | __func__, urb->status); | |
0eafe4de D |
519 | } |
520 | } | |
521 | ||
522 | static void mos7840_set_led_async(struct moschip_port *mcs, __u16 wval, | |
523 | __u16 reg) | |
524 | { | |
525 | struct usb_device *dev = mcs->port->serial->dev; | |
526 | struct usb_ctrlrequest *dr = mcs->dr; | |
527 | ||
528 | dr->bRequestType = MCS_WR_RTYPE; | |
529 | dr->bRequest = MCS_WRREQ; | |
530 | dr->wValue = cpu_to_le16(wval); | |
531 | dr->wIndex = cpu_to_le16(reg); | |
532 | dr->wLength = cpu_to_le16(0); | |
533 | ||
534 | usb_fill_control_urb(mcs->control_urb, dev, usb_sndctrlpipe(dev, 0), | |
535 | (unsigned char *)dr, NULL, 0, mos7840_set_led_callback, NULL); | |
536 | ||
537 | usb_submit_urb(mcs->control_urb, GFP_ATOMIC); | |
538 | } | |
539 | ||
540 | static void mos7840_set_led_sync(struct usb_serial_port *port, __u16 reg, | |
541 | __u16 val) | |
542 | { | |
543 | struct usb_device *dev = port->serial->dev; | |
544 | ||
545 | usb_control_msg(dev, usb_sndctrlpipe(dev, 0), MCS_WRREQ, MCS_WR_RTYPE, | |
546 | val, reg, NULL, 0, MOS_WDR_TIMEOUT); | |
547 | } | |
548 | ||
549 | static void mos7840_led_off(unsigned long arg) | |
550 | { | |
551 | struct moschip_port *mcs = (struct moschip_port *) arg; | |
552 | ||
553 | /* Turn off LED */ | |
554 | mos7840_set_led_async(mcs, 0x0300, MODEM_CONTROL_REGISTER); | |
555 | mod_timer(&mcs->led_timer2, | |
556 | jiffies + msecs_to_jiffies(LED_OFF_MS)); | |
557 | } | |
558 | ||
559 | static void mos7840_led_flag_off(unsigned long arg) | |
560 | { | |
561 | struct moschip_port *mcs = (struct moschip_port *) arg; | |
562 | ||
563 | mcs->led_flag = false; | |
564 | } | |
565 | ||
3f542974 PS |
566 | /***************************************************************************** |
567 | * mos7840_interrupt_callback | |
568 | * this is the callback function for when we have received data on the | |
569 | * interrupt endpoint. | |
570 | *****************************************************************************/ | |
571 | ||
7d12e780 | 572 | static void mos7840_interrupt_callback(struct urb *urb) |
3f542974 PS |
573 | { |
574 | int result; | |
575 | int length; | |
576 | struct moschip_port *mos7840_port; | |
577 | struct usb_serial *serial; | |
578 | __u16 Data; | |
579 | unsigned char *data; | |
580 | __u8 sp[5], st; | |
0de9a702 ON |
581 | int i, rv = 0; |
582 | __u16 wval, wreg = 0; | |
0643c724 | 583 | int status = urb->status; |
3f542974 | 584 | |
0643c724 | 585 | switch (status) { |
3f542974 PS |
586 | case 0: |
587 | /* success */ | |
588 | break; | |
589 | case -ECONNRESET: | |
590 | case -ENOENT: | |
591 | case -ESHUTDOWN: | |
592 | /* this urb is terminated, clean up */ | |
9c134a14 GKH |
593 | dev_dbg(&urb->dev->dev, "%s - urb shutting down with status: %d\n", |
594 | __func__, status); | |
3f542974 PS |
595 | return; |
596 | default: | |
9c134a14 GKH |
597 | dev_dbg(&urb->dev->dev, "%s - nonzero urb status received: %d\n", |
598 | __func__, status); | |
3f542974 PS |
599 | goto exit; |
600 | } | |
601 | ||
602 | length = urb->actual_length; | |
603 | data = urb->transfer_buffer; | |
604 | ||
cdc97792 | 605 | serial = urb->context; |
3f542974 PS |
606 | |
607 | /* Moschip get 5 bytes | |
608 | * Byte 1 IIR Port 1 (port.number is 0) | |
609 | * Byte 2 IIR Port 2 (port.number is 1) | |
610 | * Byte 3 IIR Port 3 (port.number is 2) | |
611 | * Byte 4 IIR Port 4 (port.number is 3) | |
612 | * Byte 5 FIFO status for both */ | |
613 | ||
614 | if (length && length > 5) { | |
9c134a14 | 615 | dev_dbg(&urb->dev->dev, "%s", "Wrong data !!!\n"); |
3f542974 PS |
616 | return; |
617 | } | |
618 | ||
619 | sp[0] = (__u8) data[0]; | |
620 | sp[1] = (__u8) data[1]; | |
621 | sp[2] = (__u8) data[2]; | |
622 | sp[3] = (__u8) data[3]; | |
623 | st = (__u8) data[4]; | |
624 | ||
625 | for (i = 0; i < serial->num_ports; i++) { | |
626 | mos7840_port = mos7840_get_port_private(serial->port[i]); | |
1143832e | 627 | wval = ((__u16)serial->port[i]->port_number + 1) << 8; |
3f542974 PS |
628 | if (mos7840_port->open) { |
629 | if (sp[i] & 0x01) { | |
9c134a14 | 630 | dev_dbg(&urb->dev->dev, "SP%d No Interrupt !!!\n", i); |
3f542974 PS |
631 | } else { |
632 | switch (sp[i] & 0x0f) { | |
633 | case SERIAL_IIR_RLS: | |
9c134a14 GKH |
634 | dev_dbg(&urb->dev->dev, "Serial Port %d: Receiver status error or \n", i); |
635 | dev_dbg(&urb->dev->dev, "address bit detected in 9-bit mode\n"); | |
3f542974 | 636 | mos7840_port->MsrLsr = 1; |
0de9a702 | 637 | wreg = LINE_STATUS_REGISTER; |
3f542974 PS |
638 | break; |
639 | case SERIAL_IIR_MS: | |
9c134a14 | 640 | dev_dbg(&urb->dev->dev, "Serial Port %d: Modem status change\n", i); |
3f542974 | 641 | mos7840_port->MsrLsr = 0; |
0de9a702 | 642 | wreg = MODEM_STATUS_REGISTER; |
3f542974 PS |
643 | break; |
644 | } | |
e681b66f | 645 | rv = mos7840_get_reg(mos7840_port, wval, wreg, &Data); |
3f542974 PS |
646 | } |
647 | } | |
648 | } | |
880af9db AC |
649 | if (!(rv < 0)) |
650 | /* the completion handler for the control urb will resubmit */ | |
0de9a702 ON |
651 | return; |
652 | exit: | |
3f542974 PS |
653 | result = usb_submit_urb(urb, GFP_ATOMIC); |
654 | if (result) { | |
655 | dev_err(&urb->dev->dev, | |
656 | "%s - Error %d submitting interrupt urb\n", | |
441b62c1 | 657 | __func__, result); |
3f542974 | 658 | } |
3f542974 PS |
659 | } |
660 | ||
661 | static int mos7840_port_paranoia_check(struct usb_serial_port *port, | |
662 | const char *function) | |
663 | { | |
664 | if (!port) { | |
9c134a14 | 665 | pr_debug("%s - port == NULL\n", function); |
3f542974 PS |
666 | return -1; |
667 | } | |
668 | if (!port->serial) { | |
9c134a14 | 669 | pr_debug("%s - port->serial == NULL\n", function); |
3f542974 PS |
670 | return -1; |
671 | } | |
672 | ||
673 | return 0; | |
674 | } | |
675 | ||
676 | /* Inline functions to check the sanity of a pointer that is passed to us */ | |
677 | static int mos7840_serial_paranoia_check(struct usb_serial *serial, | |
678 | const char *function) | |
679 | { | |
680 | if (!serial) { | |
9c134a14 | 681 | pr_debug("%s - serial == NULL\n", function); |
3f542974 PS |
682 | return -1; |
683 | } | |
684 | if (!serial->type) { | |
9c134a14 | 685 | pr_debug("%s - serial->type == NULL!\n", function); |
3f542974 PS |
686 | return -1; |
687 | } | |
688 | ||
689 | return 0; | |
690 | } | |
691 | ||
692 | static struct usb_serial *mos7840_get_usb_serial(struct usb_serial_port *port, | |
693 | const char *function) | |
694 | { | |
695 | /* if no port was specified, or it fails a paranoia check */ | |
696 | if (!port || | |
697 | mos7840_port_paranoia_check(port, function) || | |
698 | mos7840_serial_paranoia_check(port->serial, function)) { | |
880af9db AC |
699 | /* then say that we don't have a valid usb_serial thing, |
700 | * which will end up genrating -ENODEV return values */ | |
3f542974 PS |
701 | return NULL; |
702 | } | |
703 | ||
704 | return port->serial; | |
705 | } | |
706 | ||
707 | /***************************************************************************** | |
708 | * mos7840_bulk_in_callback | |
709 | * this is the callback function for when we have received data on the | |
710 | * bulk in endpoint. | |
711 | *****************************************************************************/ | |
712 | ||
7d12e780 | 713 | static void mos7840_bulk_in_callback(struct urb *urb) |
3f542974 | 714 | { |
0643c724 | 715 | int retval; |
3f542974 PS |
716 | unsigned char *data; |
717 | struct usb_serial *serial; | |
718 | struct usb_serial_port *port; | |
719 | struct moschip_port *mos7840_port; | |
0643c724 | 720 | int status = urb->status; |
3f542974 | 721 | |
cdc97792 | 722 | mos7840_port = urb->context; |
9c134a14 | 723 | if (!mos7840_port) |
50de36f7 | 724 | return; |
50de36f7 GKH |
725 | |
726 | if (status) { | |
9c134a14 | 727 | dev_dbg(&urb->dev->dev, "nonzero read bulk status received: %d\n", status); |
50de36f7 | 728 | mos7840_port->read_urb_busy = false; |
3f542974 PS |
729 | return; |
730 | } | |
731 | ||
9c134a14 | 732 | port = mos7840_port->port; |
441b62c1 | 733 | if (mos7840_port_paranoia_check(port, __func__)) { |
50de36f7 | 734 | mos7840_port->read_urb_busy = false; |
3f542974 PS |
735 | return; |
736 | } | |
737 | ||
441b62c1 | 738 | serial = mos7840_get_usb_serial(port, __func__); |
3f542974 | 739 | if (!serial) { |
50de36f7 | 740 | mos7840_port->read_urb_busy = false; |
3f542974 PS |
741 | return; |
742 | } | |
743 | ||
3f542974 | 744 | data = urb->transfer_buffer; |
59d33f2f | 745 | usb_serial_debug_data(&port->dev, __func__, urb->actual_length, data); |
3f542974 | 746 | |
3f542974 | 747 | if (urb->actual_length) { |
05c7cd39 | 748 | struct tty_port *tport = &mos7840_port->port->port; |
2e124b4a JS |
749 | tty_insert_flip_string(tport, data, urb->actual_length); |
750 | tty_flip_buffer_push(tport); | |
8c1a07ff JH |
751 | port->icount.rx += urb->actual_length; |
752 | dev_dbg(&port->dev, "icount.rx is %d:\n", port->icount.rx); | |
3f542974 PS |
753 | } |
754 | ||
755 | if (!mos7840_port->read_urb) { | |
9c134a14 | 756 | dev_dbg(&port->dev, "%s", "URB KILLED !!!\n"); |
50de36f7 | 757 | mos7840_port->read_urb_busy = false; |
3f542974 PS |
758 | return; |
759 | } | |
760 | ||
0eafe4de D |
761 | /* Turn on LED */ |
762 | if (mos7840_port->has_led && !mos7840_port->led_flag) { | |
763 | mos7840_port->led_flag = true; | |
764 | mos7840_set_led_async(mos7840_port, 0x0301, | |
765 | MODEM_CONTROL_REGISTER); | |
766 | mod_timer(&mos7840_port->led_timer1, | |
767 | jiffies + msecs_to_jiffies(LED_ON_MS)); | |
768 | } | |
3f542974 | 769 | |
50de36f7 | 770 | mos7840_port->read_urb_busy = true; |
0643c724 | 771 | retval = usb_submit_urb(mos7840_port->read_urb, GFP_ATOMIC); |
0de9a702 | 772 | |
0643c724 | 773 | if (retval) { |
9c134a14 | 774 | dev_dbg(&port->dev, "usb_submit_urb(read bulk) failed, retval = %d\n", retval); |
50de36f7 | 775 | mos7840_port->read_urb_busy = false; |
3f542974 PS |
776 | } |
777 | } | |
778 | ||
779 | /***************************************************************************** | |
780 | * mos7840_bulk_out_data_callback | |
880af9db AC |
781 | * this is the callback function for when we have finished sending |
782 | * serial data on the bulk out endpoint. | |
3f542974 PS |
783 | *****************************************************************************/ |
784 | ||
7d12e780 | 785 | static void mos7840_bulk_out_data_callback(struct urb *urb) |
3f542974 PS |
786 | { |
787 | struct moschip_port *mos7840_port; | |
9c134a14 | 788 | struct usb_serial_port *port; |
0643c724 | 789 | int status = urb->status; |
0de9a702 ON |
790 | int i; |
791 | ||
cdc97792 | 792 | mos7840_port = urb->context; |
9c134a14 | 793 | port = mos7840_port->port; |
0de9a702 ON |
794 | spin_lock(&mos7840_port->pool_lock); |
795 | for (i = 0; i < NUM_URBS; i++) { | |
796 | if (urb == mos7840_port->write_urb_pool[i]) { | |
797 | mos7840_port->busy[i] = 0; | |
798 | break; | |
799 | } | |
800 | } | |
801 | spin_unlock(&mos7840_port->pool_lock); | |
802 | ||
0643c724 | 803 | if (status) { |
9c134a14 | 804 | dev_dbg(&port->dev, "nonzero write bulk status received:%d\n", status); |
3f542974 PS |
805 | return; |
806 | } | |
807 | ||
9c134a14 | 808 | if (mos7840_port_paranoia_check(port, __func__)) |
3f542974 | 809 | return; |
3f542974 | 810 | |
6aad04f2 JS |
811 | if (mos7840_port->open) |
812 | tty_port_tty_wakeup(&port->port); | |
3f542974 PS |
813 | |
814 | } | |
815 | ||
816 | /************************************************************************/ | |
817 | /* 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 */ | |
818 | /************************************************************************/ | |
819 | #ifdef MCSSerialProbe | |
820 | static int mos7840_serial_probe(struct usb_serial *serial, | |
821 | const struct usb_device_id *id) | |
822 | { | |
823 | ||
824 | /*need to implement the mode_reg reading and updating\ | |
825 | structures usb_serial_ device_type\ | |
826 | (i.e num_ports, num_bulkin,bulkout etc) */ | |
827 | /* Also we can update the changes attach */ | |
828 | return 1; | |
829 | } | |
830 | #endif | |
831 | ||
832 | /***************************************************************************** | |
833 | * mos7840_open | |
834 | * this function is called by the tty driver when a port is opened | |
835 | * If successful, we return 0 | |
836 | * Otherwise we return a negative error number. | |
837 | *****************************************************************************/ | |
838 | ||
a509a7e4 | 839 | static int mos7840_open(struct tty_struct *tty, struct usb_serial_port *port) |
3f542974 PS |
840 | { |
841 | int response; | |
842 | int j; | |
843 | struct usb_serial *serial; | |
844 | struct urb *urb; | |
845 | __u16 Data; | |
846 | int status; | |
847 | struct moschip_port *mos7840_port; | |
0de9a702 | 848 | struct moschip_port *port0; |
3f542974 | 849 | |
9c134a14 | 850 | if (mos7840_port_paranoia_check(port, __func__)) |
3f542974 | 851 | return -ENODEV; |
3f542974 | 852 | |
3f542974 PS |
853 | serial = port->serial; |
854 | ||
9c134a14 | 855 | if (mos7840_serial_paranoia_check(serial, __func__)) |
3f542974 | 856 | return -ENODEV; |
3f542974 PS |
857 | |
858 | mos7840_port = mos7840_get_port_private(port); | |
0de9a702 | 859 | port0 = mos7840_get_port_private(serial->port[0]); |
3f542974 | 860 | |
0de9a702 | 861 | if (mos7840_port == NULL || port0 == NULL) |
3f542974 PS |
862 | return -ENODEV; |
863 | ||
864 | usb_clear_halt(serial->dev, port->write_urb->pipe); | |
865 | usb_clear_halt(serial->dev, port->read_urb->pipe); | |
0de9a702 | 866 | port0->open_ports++; |
3f542974 PS |
867 | |
868 | /* Initialising the write urb pool */ | |
869 | for (j = 0; j < NUM_URBS; ++j) { | |
0de9a702 | 870 | urb = usb_alloc_urb(0, GFP_KERNEL); |
3f542974 PS |
871 | mos7840_port->write_urb_pool[j] = urb; |
872 | ||
873 | if (urb == NULL) { | |
194343d9 | 874 | dev_err(&port->dev, "No more urbs???\n"); |
3f542974 PS |
875 | continue; |
876 | } | |
877 | ||
880af9db AC |
878 | urb->transfer_buffer = kmalloc(URB_TRANSFER_BUFFER_SIZE, |
879 | GFP_KERNEL); | |
3f542974 | 880 | if (!urb->transfer_buffer) { |
0de9a702 ON |
881 | usb_free_urb(urb); |
882 | mos7840_port->write_urb_pool[j] = NULL; | |
194343d9 GKH |
883 | dev_err(&port->dev, |
884 | "%s-out of memory for urb buffers.\n", | |
885 | __func__); | |
3f542974 PS |
886 | continue; |
887 | } | |
888 | } | |
889 | ||
890 | /***************************************************************************** | |
891 | * Initialize MCS7840 -- Write Init values to corresponding Registers | |
892 | * | |
893 | * Register Index | |
894 | * 1 : IER | |
895 | * 2 : FCR | |
896 | * 3 : LCR | |
897 | * 4 : MCR | |
898 | * | |
899 | * 0x08 : SP1/2 Control Reg | |
900 | *****************************************************************************/ | |
901 | ||
880af9db | 902 | /* NEED to check the following Block */ |
3f542974 | 903 | |
3f542974 PS |
904 | Data = 0x0; |
905 | status = mos7840_get_reg_sync(port, mos7840_port->SpRegOffset, &Data); | |
906 | if (status < 0) { | |
9c134a14 | 907 | dev_dbg(&port->dev, "Reading Spreg failed\n"); |
3f542974 PS |
908 | return -1; |
909 | } | |
910 | Data |= 0x80; | |
911 | status = mos7840_set_reg_sync(port, mos7840_port->SpRegOffset, Data); | |
912 | if (status < 0) { | |
9c134a14 | 913 | dev_dbg(&port->dev, "writing Spreg failed\n"); |
3f542974 PS |
914 | return -1; |
915 | } | |
916 | ||
917 | Data &= ~0x80; | |
918 | status = mos7840_set_reg_sync(port, mos7840_port->SpRegOffset, Data); | |
919 | if (status < 0) { | |
9c134a14 | 920 | dev_dbg(&port->dev, "writing Spreg failed\n"); |
3f542974 PS |
921 | return -1; |
922 | } | |
880af9db | 923 | /* End of block to be checked */ |
3f542974 | 924 | |
3f542974 | 925 | Data = 0x0; |
880af9db AC |
926 | status = mos7840_get_reg_sync(port, mos7840_port->ControlRegOffset, |
927 | &Data); | |
3f542974 | 928 | if (status < 0) { |
9c134a14 | 929 | dev_dbg(&port->dev, "Reading Controlreg failed\n"); |
3f542974 PS |
930 | return -1; |
931 | } | |
880af9db AC |
932 | Data |= 0x08; /* Driver done bit */ |
933 | Data |= 0x20; /* rx_disable */ | |
934 | status = mos7840_set_reg_sync(port, | |
935 | mos7840_port->ControlRegOffset, Data); | |
3f542974 | 936 | if (status < 0) { |
9c134a14 | 937 | dev_dbg(&port->dev, "writing Controlreg failed\n"); |
3f542974 PS |
938 | return -1; |
939 | } | |
880af9db AC |
940 | /* do register settings here */ |
941 | /* Set all regs to the device default values. */ | |
942 | /*********************************** | |
943 | * First Disable all interrupts. | |
944 | ***********************************/ | |
3f542974 | 945 | Data = 0x00; |
3f542974 PS |
946 | status = mos7840_set_uart_reg(port, INTERRUPT_ENABLE_REGISTER, Data); |
947 | if (status < 0) { | |
9c134a14 | 948 | dev_dbg(&port->dev, "disabling interrupts failed\n"); |
3f542974 PS |
949 | return -1; |
950 | } | |
880af9db | 951 | /* Set FIFO_CONTROL_REGISTER to the default value */ |
3f542974 | 952 | Data = 0x00; |
3f542974 PS |
953 | status = mos7840_set_uart_reg(port, FIFO_CONTROL_REGISTER, Data); |
954 | if (status < 0) { | |
9c134a14 | 955 | dev_dbg(&port->dev, "Writing FIFO_CONTROL_REGISTER failed\n"); |
3f542974 PS |
956 | return -1; |
957 | } | |
958 | ||
959 | Data = 0xcf; | |
3f542974 PS |
960 | status = mos7840_set_uart_reg(port, FIFO_CONTROL_REGISTER, Data); |
961 | if (status < 0) { | |
9c134a14 | 962 | dev_dbg(&port->dev, "Writing FIFO_CONTROL_REGISTER failed\n"); |
3f542974 PS |
963 | return -1; |
964 | } | |
965 | ||
966 | Data = 0x03; | |
3f542974 PS |
967 | status = mos7840_set_uart_reg(port, LINE_CONTROL_REGISTER, Data); |
968 | mos7840_port->shadowLCR = Data; | |
969 | ||
970 | Data = 0x0b; | |
3f542974 PS |
971 | status = mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, Data); |
972 | mos7840_port->shadowMCR = Data; | |
973 | ||
974 | Data = 0x00; | |
3f542974 PS |
975 | status = mos7840_get_uart_reg(port, LINE_CONTROL_REGISTER, &Data); |
976 | mos7840_port->shadowLCR = Data; | |
977 | ||
880af9db | 978 | Data |= SERIAL_LCR_DLAB; /* data latch enable in LCR 0x80 */ |
3f542974 PS |
979 | status = mos7840_set_uart_reg(port, LINE_CONTROL_REGISTER, Data); |
980 | ||
981 | Data = 0x0c; | |
3f542974 PS |
982 | status = mos7840_set_uart_reg(port, DIVISOR_LATCH_LSB, Data); |
983 | ||
984 | Data = 0x0; | |
3f542974 PS |
985 | status = mos7840_set_uart_reg(port, DIVISOR_LATCH_MSB, Data); |
986 | ||
987 | Data = 0x00; | |
3f542974 PS |
988 | status = mos7840_get_uart_reg(port, LINE_CONTROL_REGISTER, &Data); |
989 | ||
990 | Data = Data & ~SERIAL_LCR_DLAB; | |
3f542974 PS |
991 | status = mos7840_set_uart_reg(port, LINE_CONTROL_REGISTER, Data); |
992 | mos7840_port->shadowLCR = Data; | |
993 | ||
880af9db | 994 | /* clearing Bulkin and Bulkout Fifo */ |
3f542974 | 995 | Data = 0x0; |
3f542974 PS |
996 | status = mos7840_get_reg_sync(port, mos7840_port->SpRegOffset, &Data); |
997 | ||
998 | Data = Data | 0x0c; | |
3f542974 PS |
999 | status = mos7840_set_reg_sync(port, mos7840_port->SpRegOffset, Data); |
1000 | ||
1001 | Data = Data & ~0x0c; | |
3f542974 | 1002 | status = mos7840_set_reg_sync(port, mos7840_port->SpRegOffset, Data); |
880af9db | 1003 | /* Finally enable all interrupts */ |
3f542974 | 1004 | Data = 0x0c; |
3f542974 PS |
1005 | status = mos7840_set_uart_reg(port, INTERRUPT_ENABLE_REGISTER, Data); |
1006 | ||
880af9db | 1007 | /* clearing rx_disable */ |
3f542974 | 1008 | Data = 0x0; |
880af9db AC |
1009 | status = mos7840_get_reg_sync(port, mos7840_port->ControlRegOffset, |
1010 | &Data); | |
3f542974 | 1011 | Data = Data & ~0x20; |
880af9db AC |
1012 | status = mos7840_set_reg_sync(port, mos7840_port->ControlRegOffset, |
1013 | Data); | |
3f542974 | 1014 | |
880af9db | 1015 | /* rx_negate */ |
3f542974 | 1016 | Data = 0x0; |
880af9db AC |
1017 | status = mos7840_get_reg_sync(port, mos7840_port->ControlRegOffset, |
1018 | &Data); | |
3f542974 | 1019 | Data = Data | 0x10; |
880af9db AC |
1020 | status = mos7840_set_reg_sync(port, mos7840_port->ControlRegOffset, |
1021 | Data); | |
3f542974 | 1022 | |
880af9db AC |
1023 | /* Check to see if we've set up our endpoint info yet * |
1024 | * (can't set it up in mos7840_startup as the structures * | |
1025 | * were not set up at that time.) */ | |
0de9a702 | 1026 | if (port0->open_ports == 1) { |
3f542974 | 1027 | if (serial->port[0]->interrupt_in_buffer == NULL) { |
3f542974 | 1028 | /* set up interrupt urb */ |
3f542974 | 1029 | usb_fill_int_urb(serial->port[0]->interrupt_in_urb, |
880af9db AC |
1030 | serial->dev, |
1031 | usb_rcvintpipe(serial->dev, | |
1032 | serial->port[0]->interrupt_in_endpointAddress), | |
1033 | serial->port[0]->interrupt_in_buffer, | |
1034 | serial->port[0]->interrupt_in_urb-> | |
1035 | transfer_buffer_length, | |
1036 | mos7840_interrupt_callback, | |
1037 | serial, | |
1038 | serial->port[0]->interrupt_in_urb->interval); | |
3f542974 PS |
1039 | |
1040 | /* start interrupt read for mos7840 * | |
1041 | * will continue as long as mos7840 is connected */ | |
1042 | ||
1043 | response = | |
1044 | usb_submit_urb(serial->port[0]->interrupt_in_urb, | |
1045 | GFP_KERNEL); | |
1046 | if (response) { | |
194343d9 GKH |
1047 | dev_err(&port->dev, "%s - Error %d submitting " |
1048 | "interrupt urb\n", __func__, response); | |
3f542974 PS |
1049 | } |
1050 | ||
1051 | } | |
1052 | ||
1053 | } | |
1054 | ||
1055 | /* see if we've set up our endpoint info yet * | |
1056 | * (can't set it up in mos7840_startup as the * | |
1057 | * structures were not set up at that time.) */ | |
1058 | ||
1143832e | 1059 | dev_dbg(&port->dev, "port number is %d\n", port->port_number); |
e5b1e206 | 1060 | dev_dbg(&port->dev, "minor number is %d\n", port->minor); |
9c134a14 GKH |
1061 | dev_dbg(&port->dev, "Bulkin endpoint is %d\n", port->bulk_in_endpointAddress); |
1062 | dev_dbg(&port->dev, "BulkOut endpoint is %d\n", port->bulk_out_endpointAddress); | |
1063 | dev_dbg(&port->dev, "Interrupt endpoint is %d\n", port->interrupt_in_endpointAddress); | |
1064 | dev_dbg(&port->dev, "port's number in the device is %d\n", mos7840_port->port_num); | |
3f542974 PS |
1065 | mos7840_port->read_urb = port->read_urb; |
1066 | ||
1067 | /* set up our bulk in urb */ | |
1143832e | 1068 | if ((serial->num_ports == 2) && (((__u16)port->port_number % 2) != 0)) { |
093ea2d3 DL |
1069 | usb_fill_bulk_urb(mos7840_port->read_urb, |
1070 | serial->dev, | |
1071 | usb_rcvbulkpipe(serial->dev, | |
1072 | (port->bulk_in_endpointAddress) + 2), | |
1073 | port->bulk_in_buffer, | |
1074 | mos7840_port->read_urb->transfer_buffer_length, | |
1075 | mos7840_bulk_in_callback, mos7840_port); | |
1076 | } else { | |
1077 | usb_fill_bulk_urb(mos7840_port->read_urb, | |
1078 | serial->dev, | |
1079 | usb_rcvbulkpipe(serial->dev, | |
1080 | port->bulk_in_endpointAddress), | |
1081 | port->bulk_in_buffer, | |
1082 | mos7840_port->read_urb->transfer_buffer_length, | |
1083 | mos7840_bulk_in_callback, mos7840_port); | |
1084 | } | |
3f542974 | 1085 | |
9c134a14 | 1086 | dev_dbg(&port->dev, "%s: bulkin endpoint is %d\n", __func__, port->bulk_in_endpointAddress); |
50de36f7 | 1087 | mos7840_port->read_urb_busy = true; |
3f542974 PS |
1088 | response = usb_submit_urb(mos7840_port->read_urb, GFP_KERNEL); |
1089 | if (response) { | |
194343d9 GKH |
1090 | dev_err(&port->dev, "%s - Error %d submitting control urb\n", |
1091 | __func__, response); | |
50de36f7 | 1092 | mos7840_port->read_urb_busy = false; |
3f542974 PS |
1093 | } |
1094 | ||
1095 | /* initialize our wait queues */ | |
1096 | init_waitqueue_head(&mos7840_port->wait_chase); | |
3f542974 | 1097 | |
3f542974 | 1098 | /* initialize our port settings */ |
880af9db AC |
1099 | /* Must set to enable ints! */ |
1100 | mos7840_port->shadowMCR = MCR_MASTER_IE; | |
3f542974 PS |
1101 | /* send a open port command */ |
1102 | mos7840_port->open = 1; | |
880af9db | 1103 | /* mos7840_change_port_settings(mos7840_port,old_termios); */ |
3f542974 | 1104 | |
3f542974 | 1105 | return 0; |
3f542974 PS |
1106 | } |
1107 | ||
1108 | /***************************************************************************** | |
1109 | * mos7840_chars_in_buffer | |
1110 | * this function is called by the tty driver when it wants to know how many | |
1111 | * bytes of data we currently have outstanding in the port (data that has | |
1112 | * been written, but hasn't made it out the port yet) | |
1113 | * If successful, we return the number of bytes left to be written in the | |
1114 | * system, | |
95da310e | 1115 | * Otherwise we return zero. |
3f542974 PS |
1116 | *****************************************************************************/ |
1117 | ||
95da310e | 1118 | static int mos7840_chars_in_buffer(struct tty_struct *tty) |
3f542974 | 1119 | { |
95da310e | 1120 | struct usb_serial_port *port = tty->driver_data; |
3f542974 PS |
1121 | int i; |
1122 | int chars = 0; | |
0de9a702 | 1123 | unsigned long flags; |
3f542974 PS |
1124 | struct moschip_port *mos7840_port; |
1125 | ||
9c134a14 | 1126 | if (mos7840_port_paranoia_check(port, __func__)) |
95da310e | 1127 | return 0; |
3f542974 PS |
1128 | |
1129 | mos7840_port = mos7840_get_port_private(port); | |
3363155b | 1130 | if (mos7840_port == NULL) |
95da310e | 1131 | return 0; |
3f542974 | 1132 | |
880af9db | 1133 | spin_lock_irqsave(&mos7840_port->pool_lock, flags); |
5c263b92 MF |
1134 | for (i = 0; i < NUM_URBS; ++i) { |
1135 | if (mos7840_port->busy[i]) { | |
1136 | struct urb *urb = mos7840_port->write_urb_pool[i]; | |
1137 | chars += urb->transfer_buffer_length; | |
1138 | } | |
1139 | } | |
880af9db | 1140 | spin_unlock_irqrestore(&mos7840_port->pool_lock, flags); |
9c134a14 | 1141 | dev_dbg(&port->dev, "%s - returns %d\n", __func__, chars); |
0de9a702 | 1142 | return chars; |
3f542974 PS |
1143 | |
1144 | } | |
1145 | ||
3f542974 PS |
1146 | /***************************************************************************** |
1147 | * mos7840_close | |
1148 | * this function is called by the tty driver when a port is closed | |
1149 | *****************************************************************************/ | |
1150 | ||
335f8514 | 1151 | static void mos7840_close(struct usb_serial_port *port) |
3f542974 PS |
1152 | { |
1153 | struct usb_serial *serial; | |
1154 | struct moschip_port *mos7840_port; | |
0de9a702 | 1155 | struct moschip_port *port0; |
3f542974 PS |
1156 | int j; |
1157 | __u16 Data; | |
1158 | ||
9c134a14 | 1159 | if (mos7840_port_paranoia_check(port, __func__)) |
3f542974 | 1160 | return; |
3f542974 | 1161 | |
441b62c1 | 1162 | serial = mos7840_get_usb_serial(port, __func__); |
9c134a14 | 1163 | if (!serial) |
3f542974 | 1164 | return; |
3f542974 PS |
1165 | |
1166 | mos7840_port = mos7840_get_port_private(port); | |
0de9a702 | 1167 | port0 = mos7840_get_port_private(serial->port[0]); |
3f542974 | 1168 | |
0de9a702 | 1169 | if (mos7840_port == NULL || port0 == NULL) |
3f542974 | 1170 | return; |
3f542974 PS |
1171 | |
1172 | for (j = 0; j < NUM_URBS; ++j) | |
1173 | usb_kill_urb(mos7840_port->write_urb_pool[j]); | |
1174 | ||
1175 | /* Freeing Write URBs */ | |
1176 | for (j = 0; j < NUM_URBS; ++j) { | |
1177 | if (mos7840_port->write_urb_pool[j]) { | |
1178 | if (mos7840_port->write_urb_pool[j]->transfer_buffer) | |
1179 | kfree(mos7840_port->write_urb_pool[j]-> | |
1180 | transfer_buffer); | |
1181 | ||
1182 | usb_free_urb(mos7840_port->write_urb_pool[j]); | |
1183 | } | |
1184 | } | |
1185 | ||
bb3529c6 JH |
1186 | usb_kill_urb(mos7840_port->write_urb); |
1187 | usb_kill_urb(mos7840_port->read_urb); | |
1188 | mos7840_port->read_urb_busy = false; | |
1189 | ||
0de9a702 | 1190 | port0->open_ports--; |
1143832e | 1191 | dev_dbg(&port->dev, "%s in close%d\n", __func__, port0->open_ports); |
0de9a702 | 1192 | if (port0->open_ports == 0) { |
3f542974 | 1193 | if (serial->port[0]->interrupt_in_urb) { |
9c134a14 | 1194 | dev_dbg(&port->dev, "Shutdown interrupt_in_urb\n"); |
0de9a702 | 1195 | usb_kill_urb(serial->port[0]->interrupt_in_urb); |
3f542974 PS |
1196 | } |
1197 | } | |
1198 | ||
1199 | if (mos7840_port->write_urb) { | |
1200 | /* if this urb had a transfer buffer already (old tx) free it */ | |
ae8d4879 | 1201 | kfree(mos7840_port->write_urb->transfer_buffer); |
3f542974 PS |
1202 | usb_free_urb(mos7840_port->write_urb); |
1203 | } | |
1204 | ||
1205 | Data = 0x0; | |
1206 | mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, Data); | |
1207 | ||
1208 | Data = 0x00; | |
1209 | mos7840_set_uart_reg(port, INTERRUPT_ENABLE_REGISTER, Data); | |
1210 | ||
1211 | mos7840_port->open = 0; | |
3f542974 PS |
1212 | } |
1213 | ||
1214 | /************************************************************************ | |
1215 | * | |
1216 | * mos7840_block_until_chase_response | |
1217 | * | |
1218 | * This function will block the close until one of the following: | |
1219 | * 1. Response to our Chase comes from mos7840 | |
dc0d5c1e | 1220 | * 2. A timeout of 10 seconds without activity has expired |
3f542974 PS |
1221 | * (1K of mos7840 data @ 2400 baud ==> 4 sec to empty) |
1222 | * | |
1223 | ************************************************************************/ | |
1224 | ||
95da310e AC |
1225 | static void mos7840_block_until_chase_response(struct tty_struct *tty, |
1226 | struct moschip_port *mos7840_port) | |
3f542974 | 1227 | { |
1e658489 | 1228 | int timeout = msecs_to_jiffies(1000); |
3f542974 PS |
1229 | int wait = 10; |
1230 | int count; | |
1231 | ||
1232 | while (1) { | |
95da310e | 1233 | count = mos7840_chars_in_buffer(tty); |
3f542974 PS |
1234 | |
1235 | /* Check for Buffer status */ | |
880af9db | 1236 | if (count <= 0) |
3f542974 | 1237 | return; |
3f542974 PS |
1238 | |
1239 | /* Block the thread for a while */ | |
1240 | interruptible_sleep_on_timeout(&mos7840_port->wait_chase, | |
1241 | timeout); | |
1242 | /* No activity.. count down section */ | |
1243 | wait--; | |
1244 | if (wait == 0) { | |
9c134a14 | 1245 | dev_dbg(&mos7840_port->port->dev, "%s - TIMEOUT\n", __func__); |
3f542974 PS |
1246 | return; |
1247 | } else { | |
dc0d5c1e | 1248 | /* Reset timeout value back to seconds */ |
3f542974 PS |
1249 | wait = 10; |
1250 | } | |
1251 | } | |
1252 | ||
1253 | } | |
1254 | ||
1255 | /***************************************************************************** | |
1256 | * mos7840_break | |
1257 | * this function sends a break to the port | |
1258 | *****************************************************************************/ | |
95da310e | 1259 | static void mos7840_break(struct tty_struct *tty, int break_state) |
3f542974 | 1260 | { |
95da310e | 1261 | struct usb_serial_port *port = tty->driver_data; |
3f542974 PS |
1262 | unsigned char data; |
1263 | struct usb_serial *serial; | |
1264 | struct moschip_port *mos7840_port; | |
1265 | ||
9c134a14 | 1266 | if (mos7840_port_paranoia_check(port, __func__)) |
3f542974 | 1267 | return; |
3f542974 | 1268 | |
441b62c1 | 1269 | serial = mos7840_get_usb_serial(port, __func__); |
9c134a14 | 1270 | if (!serial) |
3f542974 | 1271 | return; |
3f542974 PS |
1272 | |
1273 | mos7840_port = mos7840_get_port_private(port); | |
1274 | ||
880af9db | 1275 | if (mos7840_port == NULL) |
3f542974 | 1276 | return; |
3f542974 | 1277 | |
bb3529c6 JH |
1278 | /* flush and block until tx is empty */ |
1279 | mos7840_block_until_chase_response(tty, mos7840_port); | |
3f542974 | 1280 | |
95da310e | 1281 | if (break_state == -1) |
3f542974 | 1282 | data = mos7840_port->shadowLCR | LCR_SET_BREAK; |
95da310e | 1283 | else |
3f542974 | 1284 | data = mos7840_port->shadowLCR & ~LCR_SET_BREAK; |
3f542974 | 1285 | |
6b447f04 | 1286 | /* FIXME: no locking on shadowLCR anywhere in driver */ |
3f542974 | 1287 | mos7840_port->shadowLCR = data; |
9c134a14 | 1288 | dev_dbg(&port->dev, "%s mos7840_port->shadowLCR is %x\n", __func__, mos7840_port->shadowLCR); |
3f542974 PS |
1289 | mos7840_set_uart_reg(port, LINE_CONTROL_REGISTER, |
1290 | mos7840_port->shadowLCR); | |
3f542974 PS |
1291 | } |
1292 | ||
1293 | /***************************************************************************** | |
1294 | * mos7840_write_room | |
1295 | * this function is called by the tty driver when it wants to know how many | |
1296 | * bytes of data we can accept for a specific port. | |
1297 | * If successful, we return the amount of room that we have for this port | |
1298 | * Otherwise we return a negative error number. | |
1299 | *****************************************************************************/ | |
1300 | ||
95da310e | 1301 | static int mos7840_write_room(struct tty_struct *tty) |
3f542974 | 1302 | { |
95da310e | 1303 | struct usb_serial_port *port = tty->driver_data; |
3f542974 PS |
1304 | int i; |
1305 | int room = 0; | |
0de9a702 | 1306 | unsigned long flags; |
3f542974 PS |
1307 | struct moschip_port *mos7840_port; |
1308 | ||
9c134a14 | 1309 | if (mos7840_port_paranoia_check(port, __func__)) |
3f542974 | 1310 | return -1; |
3f542974 PS |
1311 | |
1312 | mos7840_port = mos7840_get_port_private(port); | |
9c134a14 | 1313 | if (mos7840_port == NULL) |
3f542974 | 1314 | return -1; |
3f542974 | 1315 | |
0de9a702 | 1316 | spin_lock_irqsave(&mos7840_port->pool_lock, flags); |
3f542974 | 1317 | for (i = 0; i < NUM_URBS; ++i) { |
880af9db | 1318 | if (!mos7840_port->busy[i]) |
3f542974 | 1319 | room += URB_TRANSFER_BUFFER_SIZE; |
3f542974 | 1320 | } |
0de9a702 | 1321 | spin_unlock_irqrestore(&mos7840_port->pool_lock, flags); |
3f542974 | 1322 | |
0de9a702 | 1323 | room = (room == 0) ? 0 : room - URB_TRANSFER_BUFFER_SIZE + 1; |
9c134a14 | 1324 | dev_dbg(&mos7840_port->port->dev, "%s - returns %d\n", __func__, room); |
0de9a702 | 1325 | return room; |
3f542974 PS |
1326 | |
1327 | } | |
1328 | ||
1329 | /***************************************************************************** | |
1330 | * mos7840_write | |
1331 | * this function is called by the tty driver when data should be written to | |
1332 | * the port. | |
1333 | * If successful, we return the number of bytes written, otherwise we | |
1334 | * return a negative error number. | |
1335 | *****************************************************************************/ | |
1336 | ||
95da310e | 1337 | static int mos7840_write(struct tty_struct *tty, struct usb_serial_port *port, |
3f542974 PS |
1338 | const unsigned char *data, int count) |
1339 | { | |
1340 | int status; | |
1341 | int i; | |
1342 | int bytes_sent = 0; | |
1343 | int transfer_size; | |
0de9a702 | 1344 | unsigned long flags; |
3f542974 PS |
1345 | |
1346 | struct moschip_port *mos7840_port; | |
1347 | struct usb_serial *serial; | |
1348 | struct urb *urb; | |
880af9db | 1349 | /* __u16 Data; */ |
3f542974 PS |
1350 | const unsigned char *current_position = data; |
1351 | unsigned char *data1; | |
3f542974 PS |
1352 | |
1353 | #ifdef NOTMOS7840 | |
1354 | Data = 0x00; | |
3f542974 PS |
1355 | status = mos7840_get_uart_reg(port, LINE_CONTROL_REGISTER, &Data); |
1356 | mos7840_port->shadowLCR = Data; | |
9c134a14 GKH |
1357 | dev_dbg(&port->dev, "%s: LINE_CONTROL_REGISTER is %x\n", __func__, Data); |
1358 | dev_dbg(&port->dev, "%s: mos7840_port->shadowLCR is %x\n", __func__, mos7840_port->shadowLCR); | |
3f542974 | 1359 | |
880af9db AC |
1360 | /* Data = 0x03; */ |
1361 | /* status = mos7840_set_uart_reg(port,LINE_CONTROL_REGISTER,Data); */ | |
1362 | /* mos7840_port->shadowLCR=Data;//Need to add later */ | |
3f542974 | 1363 | |
880af9db | 1364 | Data |= SERIAL_LCR_DLAB; /* data latch enable in LCR 0x80 */ |
3f542974 PS |
1365 | status = mos7840_set_uart_reg(port, LINE_CONTROL_REGISTER, Data); |
1366 | ||
880af9db AC |
1367 | /* Data = 0x0c; */ |
1368 | /* status = mos7840_set_uart_reg(port,DIVISOR_LATCH_LSB,Data); */ | |
3f542974 | 1369 | Data = 0x00; |
3f542974 | 1370 | status = mos7840_get_uart_reg(port, DIVISOR_LATCH_LSB, &Data); |
9c134a14 | 1371 | dev_dbg(&port->dev, "%s: DLL value is %x\n", __func__, Data); |
3f542974 PS |
1372 | |
1373 | Data = 0x0; | |
3f542974 | 1374 | status = mos7840_get_uart_reg(port, DIVISOR_LATCH_MSB, &Data); |
9c134a14 | 1375 | dev_dbg(&port->dev, "%s: DLM value is %x\n", __func__, Data); |
3f542974 PS |
1376 | |
1377 | Data = Data & ~SERIAL_LCR_DLAB; | |
9c134a14 | 1378 | dev_dbg(&port->dev, "%s: mos7840_port->shadowLCR is %x\n", __func__, mos7840_port->shadowLCR); |
3f542974 PS |
1379 | status = mos7840_set_uart_reg(port, LINE_CONTROL_REGISTER, Data); |
1380 | #endif | |
1381 | ||
9c134a14 | 1382 | if (mos7840_port_paranoia_check(port, __func__)) |
3f542974 | 1383 | return -1; |
3f542974 PS |
1384 | |
1385 | serial = port->serial; | |
9c134a14 | 1386 | if (mos7840_serial_paranoia_check(serial, __func__)) |
3f542974 | 1387 | return -1; |
3f542974 PS |
1388 | |
1389 | mos7840_port = mos7840_get_port_private(port); | |
9c134a14 | 1390 | if (mos7840_port == NULL) |
3f542974 | 1391 | return -1; |
3f542974 PS |
1392 | |
1393 | /* try to find a free urb in the list */ | |
1394 | urb = NULL; | |
1395 | ||
0de9a702 | 1396 | spin_lock_irqsave(&mos7840_port->pool_lock, flags); |
3f542974 | 1397 | for (i = 0; i < NUM_URBS; ++i) { |
0de9a702 ON |
1398 | if (!mos7840_port->busy[i]) { |
1399 | mos7840_port->busy[i] = 1; | |
3f542974 | 1400 | urb = mos7840_port->write_urb_pool[i]; |
9c134a14 | 1401 | dev_dbg(&port->dev, "URB:%d\n", i); |
3f542974 PS |
1402 | break; |
1403 | } | |
1404 | } | |
0de9a702 | 1405 | spin_unlock_irqrestore(&mos7840_port->pool_lock, flags); |
3f542974 PS |
1406 | |
1407 | if (urb == NULL) { | |
9c134a14 | 1408 | dev_dbg(&port->dev, "%s - no more free urbs\n", __func__); |
3f542974 PS |
1409 | goto exit; |
1410 | } | |
1411 | ||
1412 | if (urb->transfer_buffer == NULL) { | |
1413 | urb->transfer_buffer = | |
1414 | kmalloc(URB_TRANSFER_BUFFER_SIZE, GFP_KERNEL); | |
1415 | ||
1416 | if (urb->transfer_buffer == NULL) { | |
22a416c4 | 1417 | dev_err_console(port, "%s no more kernel memory...\n", |
194343d9 | 1418 | __func__); |
3f542974 PS |
1419 | goto exit; |
1420 | } | |
1421 | } | |
1422 | transfer_size = min(count, URB_TRANSFER_BUFFER_SIZE); | |
1423 | ||
97c4965d | 1424 | memcpy(urb->transfer_buffer, current_position, transfer_size); |
3f542974 PS |
1425 | |
1426 | /* fill urb with data and submit */ | |
1143832e | 1427 | if ((serial->num_ports == 2) && (((__u16)port->port_number % 2) != 0)) { |
093ea2d3 DL |
1428 | usb_fill_bulk_urb(urb, |
1429 | serial->dev, | |
1430 | usb_sndbulkpipe(serial->dev, | |
1431 | (port->bulk_out_endpointAddress) + 2), | |
1432 | urb->transfer_buffer, | |
1433 | transfer_size, | |
1434 | mos7840_bulk_out_data_callback, mos7840_port); | |
1435 | } else { | |
1436 | usb_fill_bulk_urb(urb, | |
1437 | serial->dev, | |
1438 | usb_sndbulkpipe(serial->dev, | |
1439 | port->bulk_out_endpointAddress), | |
1440 | urb->transfer_buffer, | |
1441 | transfer_size, | |
1442 | mos7840_bulk_out_data_callback, mos7840_port); | |
1443 | } | |
3f542974 PS |
1444 | |
1445 | data1 = urb->transfer_buffer; | |
9c134a14 | 1446 | dev_dbg(&port->dev, "bulkout endpoint is %d\n", port->bulk_out_endpointAddress); |
3f542974 | 1447 | |
0eafe4de D |
1448 | /* Turn on LED */ |
1449 | if (mos7840_port->has_led && !mos7840_port->led_flag) { | |
1450 | mos7840_port->led_flag = true; | |
1451 | mos7840_set_led_sync(port, MODEM_CONTROL_REGISTER, 0x0301); | |
1452 | mod_timer(&mos7840_port->led_timer1, | |
1453 | jiffies + msecs_to_jiffies(LED_ON_MS)); | |
1454 | } | |
1455 | ||
3f542974 PS |
1456 | /* send it down the pipe */ |
1457 | status = usb_submit_urb(urb, GFP_ATOMIC); | |
1458 | ||
1459 | if (status) { | |
0de9a702 | 1460 | mos7840_port->busy[i] = 0; |
22a416c4 | 1461 | dev_err_console(port, "%s - usb_submit_urb(write bulk) failed " |
194343d9 | 1462 | "with status = %d\n", __func__, status); |
3f542974 PS |
1463 | bytes_sent = status; |
1464 | goto exit; | |
1465 | } | |
1466 | bytes_sent = transfer_size; | |
8c1a07ff JH |
1467 | port->icount.tx += transfer_size; |
1468 | dev_dbg(&port->dev, "icount.tx is %d:\n", port->icount.tx); | |
95da310e | 1469 | exit: |
3f542974 PS |
1470 | return bytes_sent; |
1471 | ||
1472 | } | |
1473 | ||
1474 | /***************************************************************************** | |
1475 | * mos7840_throttle | |
1476 | * this function is called by the tty driver when it wants to stop the data | |
1477 | * being read from the port. | |
1478 | *****************************************************************************/ | |
1479 | ||
95da310e | 1480 | static void mos7840_throttle(struct tty_struct *tty) |
3f542974 | 1481 | { |
95da310e | 1482 | struct usb_serial_port *port = tty->driver_data; |
3f542974 | 1483 | struct moschip_port *mos7840_port; |
3f542974 PS |
1484 | int status; |
1485 | ||
9c134a14 | 1486 | if (mos7840_port_paranoia_check(port, __func__)) |
3f542974 | 1487 | return; |
3f542974 PS |
1488 | |
1489 | mos7840_port = mos7840_get_port_private(port); | |
1490 | ||
1491 | if (mos7840_port == NULL) | |
1492 | return; | |
1493 | ||
1494 | if (!mos7840_port->open) { | |
9c134a14 | 1495 | dev_dbg(&port->dev, "%s", "port not opened\n"); |
3f542974 PS |
1496 | return; |
1497 | } | |
1498 | ||
3f542974 PS |
1499 | /* if we are implementing XON/XOFF, send the stop character */ |
1500 | if (I_IXOFF(tty)) { | |
1501 | unsigned char stop_char = STOP_CHAR(tty); | |
95da310e AC |
1502 | status = mos7840_write(tty, port, &stop_char, 1); |
1503 | if (status <= 0) | |
3f542974 | 1504 | return; |
3f542974 | 1505 | } |
3f542974 | 1506 | /* if we are implementing RTS/CTS, toggle that line */ |
adc8d746 | 1507 | if (tty->termios.c_cflag & CRTSCTS) { |
3f542974 | 1508 | mos7840_port->shadowMCR &= ~MCR_RTS; |
95da310e | 1509 | status = mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, |
3f542974 | 1510 | mos7840_port->shadowMCR); |
95da310e | 1511 | if (status < 0) |
3f542974 | 1512 | return; |
3f542974 | 1513 | } |
3f542974 PS |
1514 | } |
1515 | ||
1516 | /***************************************************************************** | |
1517 | * mos7840_unthrottle | |
880af9db AC |
1518 | * this function is called by the tty driver when it wants to resume |
1519 | * the data being read from the port (called after mos7840_throttle is | |
1520 | * called) | |
3f542974 | 1521 | *****************************************************************************/ |
95da310e | 1522 | static void mos7840_unthrottle(struct tty_struct *tty) |
3f542974 | 1523 | { |
95da310e | 1524 | struct usb_serial_port *port = tty->driver_data; |
3f542974 PS |
1525 | int status; |
1526 | struct moschip_port *mos7840_port = mos7840_get_port_private(port); | |
1527 | ||
9c134a14 | 1528 | if (mos7840_port_paranoia_check(port, __func__)) |
3f542974 | 1529 | return; |
3f542974 PS |
1530 | |
1531 | if (mos7840_port == NULL) | |
1532 | return; | |
1533 | ||
1534 | if (!mos7840_port->open) { | |
9c134a14 | 1535 | dev_dbg(&port->dev, "%s - port not opened\n", __func__); |
3f542974 PS |
1536 | return; |
1537 | } | |
1538 | ||
3f542974 PS |
1539 | /* if we are implementing XON/XOFF, send the start character */ |
1540 | if (I_IXOFF(tty)) { | |
1541 | unsigned char start_char = START_CHAR(tty); | |
95da310e AC |
1542 | status = mos7840_write(tty, port, &start_char, 1); |
1543 | if (status <= 0) | |
3f542974 | 1544 | return; |
3f542974 PS |
1545 | } |
1546 | ||
1547 | /* if we are implementing RTS/CTS, toggle that line */ | |
adc8d746 | 1548 | if (tty->termios.c_cflag & CRTSCTS) { |
3f542974 | 1549 | mos7840_port->shadowMCR |= MCR_RTS; |
95da310e | 1550 | status = mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, |
3f542974 | 1551 | mos7840_port->shadowMCR); |
95da310e | 1552 | if (status < 0) |
3f542974 | 1553 | return; |
3f542974 | 1554 | } |
3f542974 PS |
1555 | } |
1556 | ||
60b33c13 | 1557 | static int mos7840_tiocmget(struct tty_struct *tty) |
3f542974 | 1558 | { |
95da310e | 1559 | struct usb_serial_port *port = tty->driver_data; |
3f542974 PS |
1560 | struct moschip_port *mos7840_port; |
1561 | unsigned int result; | |
1562 | __u16 msr; | |
1563 | __u16 mcr; | |
880af9db | 1564 | int status; |
3f542974 PS |
1565 | mos7840_port = mos7840_get_port_private(port); |
1566 | ||
3f542974 PS |
1567 | if (mos7840_port == NULL) |
1568 | return -ENODEV; | |
1569 | ||
1570 | status = mos7840_get_uart_reg(port, MODEM_STATUS_REGISTER, &msr); | |
1571 | status = mos7840_get_uart_reg(port, MODEM_CONTROL_REGISTER, &mcr); | |
1572 | result = ((mcr & MCR_DTR) ? TIOCM_DTR : 0) | |
1573 | | ((mcr & MCR_RTS) ? TIOCM_RTS : 0) | |
1574 | | ((mcr & MCR_LOOPBACK) ? TIOCM_LOOP : 0) | |
1575 | | ((msr & MOS7840_MSR_CTS) ? TIOCM_CTS : 0) | |
1576 | | ((msr & MOS7840_MSR_CD) ? TIOCM_CAR : 0) | |
1577 | | ((msr & MOS7840_MSR_RI) ? TIOCM_RI : 0) | |
1578 | | ((msr & MOS7840_MSR_DSR) ? TIOCM_DSR : 0); | |
1579 | ||
9c134a14 | 1580 | dev_dbg(&port->dev, "%s - 0x%04X\n", __func__, result); |
3f542974 PS |
1581 | |
1582 | return result; | |
1583 | } | |
1584 | ||
20b9d177 | 1585 | static int mos7840_tiocmset(struct tty_struct *tty, |
3f542974 PS |
1586 | unsigned int set, unsigned int clear) |
1587 | { | |
95da310e | 1588 | struct usb_serial_port *port = tty->driver_data; |
3f542974 PS |
1589 | struct moschip_port *mos7840_port; |
1590 | unsigned int mcr; | |
87521c46 | 1591 | int status; |
3f542974 | 1592 | |
3f542974 PS |
1593 | mos7840_port = mos7840_get_port_private(port); |
1594 | ||
1595 | if (mos7840_port == NULL) | |
1596 | return -ENODEV; | |
1597 | ||
e2984494 | 1598 | /* FIXME: What locks the port registers ? */ |
3f542974 PS |
1599 | mcr = mos7840_port->shadowMCR; |
1600 | if (clear & TIOCM_RTS) | |
1601 | mcr &= ~MCR_RTS; | |
1602 | if (clear & TIOCM_DTR) | |
1603 | mcr &= ~MCR_DTR; | |
1604 | if (clear & TIOCM_LOOP) | |
1605 | mcr &= ~MCR_LOOPBACK; | |
1606 | ||
1607 | if (set & TIOCM_RTS) | |
1608 | mcr |= MCR_RTS; | |
1609 | if (set & TIOCM_DTR) | |
1610 | mcr |= MCR_DTR; | |
1611 | if (set & TIOCM_LOOP) | |
1612 | mcr |= MCR_LOOPBACK; | |
1613 | ||
1614 | mos7840_port->shadowMCR = mcr; | |
1615 | ||
3f542974 PS |
1616 | status = mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, mcr); |
1617 | if (status < 0) { | |
9c134a14 | 1618 | dev_dbg(&port->dev, "setting MODEM_CONTROL_REGISTER Failed\n"); |
87521c46 | 1619 | return status; |
3f542974 PS |
1620 | } |
1621 | ||
1622 | return 0; | |
1623 | } | |
1624 | ||
1625 | /***************************************************************************** | |
1626 | * mos7840_calc_baud_rate_divisor | |
1627 | * this function calculates the proper baud rate divisor for the specified | |
1628 | * baud rate. | |
1629 | *****************************************************************************/ | |
9c134a14 GKH |
1630 | static int mos7840_calc_baud_rate_divisor(struct usb_serial_port *port, |
1631 | int baudRate, int *divisor, | |
880af9db | 1632 | __u16 *clk_sel_val) |
3f542974 | 1633 | { |
9c134a14 | 1634 | dev_dbg(&port->dev, "%s - %d\n", __func__, baudRate); |
3f542974 PS |
1635 | |
1636 | if (baudRate <= 115200) { | |
1637 | *divisor = 115200 / baudRate; | |
1638 | *clk_sel_val = 0x0; | |
1639 | } | |
1640 | if ((baudRate > 115200) && (baudRate <= 230400)) { | |
1641 | *divisor = 230400 / baudRate; | |
1642 | *clk_sel_val = 0x10; | |
1643 | } else if ((baudRate > 230400) && (baudRate <= 403200)) { | |
1644 | *divisor = 403200 / baudRate; | |
1645 | *clk_sel_val = 0x20; | |
1646 | } else if ((baudRate > 403200) && (baudRate <= 460800)) { | |
1647 | *divisor = 460800 / baudRate; | |
1648 | *clk_sel_val = 0x30; | |
1649 | } else if ((baudRate > 460800) && (baudRate <= 806400)) { | |
1650 | *divisor = 806400 / baudRate; | |
1651 | *clk_sel_val = 0x40; | |
1652 | } else if ((baudRate > 806400) && (baudRate <= 921600)) { | |
1653 | *divisor = 921600 / baudRate; | |
1654 | *clk_sel_val = 0x50; | |
1655 | } else if ((baudRate > 921600) && (baudRate <= 1572864)) { | |
1656 | *divisor = 1572864 / baudRate; | |
1657 | *clk_sel_val = 0x60; | |
1658 | } else if ((baudRate > 1572864) && (baudRate <= 3145728)) { | |
1659 | *divisor = 3145728 / baudRate; | |
1660 | *clk_sel_val = 0x70; | |
1661 | } | |
1662 | return 0; | |
1663 | ||
1664 | #ifdef NOTMCS7840 | |
1665 | ||
1666 | for (i = 0; i < ARRAY_SIZE(mos7840_divisor_table); i++) { | |
1667 | if (mos7840_divisor_table[i].BaudRate == baudrate) { | |
1668 | *divisor = mos7840_divisor_table[i].Divisor; | |
1669 | return 0; | |
1670 | } | |
1671 | } | |
1672 | ||
1673 | /* After trying for all the standard baud rates * | |
1674 | * Try calculating the divisor for this baud rate */ | |
1675 | ||
1676 | if (baudrate > 75 && baudrate < 230400) { | |
1677 | /* get the divisor */ | |
1678 | custom = (__u16) (230400L / baudrate); | |
1679 | ||
1680 | /* Check for round off */ | |
1681 | round1 = (__u16) (2304000L / baudrate); | |
1682 | round = (__u16) (round1 - (custom * 10)); | |
880af9db | 1683 | if (round > 4) |
3f542974 | 1684 | custom++; |
3f542974 PS |
1685 | *divisor = custom; |
1686 | ||
9c134a14 | 1687 | dev_dbg(&port->dev, " Baud %d = %d\n", baudrate, custom); |
3f542974 PS |
1688 | return 0; |
1689 | } | |
1690 | ||
9c134a14 | 1691 | dev_dbg(&port->dev, "%s", " Baud calculation Failed...\n"); |
3f542974 PS |
1692 | return -1; |
1693 | #endif | |
1694 | } | |
1695 | ||
1696 | /***************************************************************************** | |
1697 | * mos7840_send_cmd_write_baud_rate | |
1698 | * this function sends the proper command to change the baud rate of the | |
1699 | * specified port. | |
1700 | *****************************************************************************/ | |
1701 | ||
1702 | static int mos7840_send_cmd_write_baud_rate(struct moschip_port *mos7840_port, | |
1703 | int baudRate) | |
1704 | { | |
1705 | int divisor = 0; | |
1706 | int status; | |
1707 | __u16 Data; | |
1708 | unsigned char number; | |
1709 | __u16 clk_sel_val; | |
1710 | struct usb_serial_port *port; | |
1711 | ||
1712 | if (mos7840_port == NULL) | |
1713 | return -1; | |
1714 | ||
9c134a14 GKH |
1715 | port = mos7840_port->port; |
1716 | if (mos7840_port_paranoia_check(port, __func__)) | |
3f542974 | 1717 | return -1; |
3f542974 | 1718 | |
9c134a14 | 1719 | if (mos7840_serial_paranoia_check(port->serial, __func__)) |
3f542974 | 1720 | return -1; |
3f542974 | 1721 | |
1143832e | 1722 | number = mos7840_port->port->port_number; |
3f542974 | 1723 | |
1143832e | 1724 | dev_dbg(&port->dev, "%s - baud = %d\n", __func__, baudRate); |
880af9db | 1725 | /* reset clk_uart_sel in spregOffset */ |
3f542974 PS |
1726 | if (baudRate > 115200) { |
1727 | #ifdef HW_flow_control | |
880af9db AC |
1728 | /* NOTE: need to see the pther register to modify */ |
1729 | /* setting h/w flow control bit to 1 */ | |
3f542974 PS |
1730 | Data = 0x2b; |
1731 | mos7840_port->shadowMCR = Data; | |
880af9db AC |
1732 | status = mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, |
1733 | Data); | |
3f542974 | 1734 | if (status < 0) { |
9c134a14 | 1735 | dev_dbg(&port->dev, "Writing spreg failed in set_serial_baud\n"); |
3f542974 PS |
1736 | return -1; |
1737 | } | |
1738 | #endif | |
1739 | ||
1740 | } else { | |
1741 | #ifdef HW_flow_control | |
093ea2d3 | 1742 | /* setting h/w flow control bit to 0 */ |
3f542974 PS |
1743 | Data = 0xb; |
1744 | mos7840_port->shadowMCR = Data; | |
880af9db AC |
1745 | status = mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, |
1746 | Data); | |
3f542974 | 1747 | if (status < 0) { |
9c134a14 | 1748 | dev_dbg(&port->dev, "Writing spreg failed in set_serial_baud\n"); |
3f542974 PS |
1749 | return -1; |
1750 | } | |
1751 | #endif | |
1752 | ||
1753 | } | |
1754 | ||
880af9db | 1755 | if (1) { /* baudRate <= 115200) */ |
3f542974 PS |
1756 | clk_sel_val = 0x0; |
1757 | Data = 0x0; | |
9c134a14 | 1758 | status = mos7840_calc_baud_rate_divisor(port, baudRate, &divisor, |
3f542974 | 1759 | &clk_sel_val); |
880af9db AC |
1760 | status = mos7840_get_reg_sync(port, mos7840_port->SpRegOffset, |
1761 | &Data); | |
3f542974 | 1762 | if (status < 0) { |
9c134a14 | 1763 | dev_dbg(&port->dev, "reading spreg failed in set_serial_baud\n"); |
3f542974 PS |
1764 | return -1; |
1765 | } | |
1766 | Data = (Data & 0x8f) | clk_sel_val; | |
880af9db AC |
1767 | status = mos7840_set_reg_sync(port, mos7840_port->SpRegOffset, |
1768 | Data); | |
3f542974 | 1769 | if (status < 0) { |
9c134a14 | 1770 | dev_dbg(&port->dev, "Writing spreg failed in set_serial_baud\n"); |
3f542974 PS |
1771 | return -1; |
1772 | } | |
1773 | /* Calculate the Divisor */ | |
1774 | ||
1775 | if (status) { | |
194343d9 | 1776 | dev_err(&port->dev, "%s - bad baud rate\n", __func__); |
3f542974 PS |
1777 | return status; |
1778 | } | |
1779 | /* Enable access to divisor latch */ | |
1780 | Data = mos7840_port->shadowLCR | SERIAL_LCR_DLAB; | |
1781 | mos7840_port->shadowLCR = Data; | |
1782 | mos7840_set_uart_reg(port, LINE_CONTROL_REGISTER, Data); | |
1783 | ||
1784 | /* Write the divisor */ | |
1785 | Data = (unsigned char)(divisor & 0xff); | |
9c134a14 | 1786 | dev_dbg(&port->dev, "set_serial_baud Value to write DLL is %x\n", Data); |
3f542974 PS |
1787 | mos7840_set_uart_reg(port, DIVISOR_LATCH_LSB, Data); |
1788 | ||
1789 | Data = (unsigned char)((divisor & 0xff00) >> 8); | |
9c134a14 | 1790 | dev_dbg(&port->dev, "set_serial_baud Value to write DLM is %x\n", Data); |
3f542974 PS |
1791 | mos7840_set_uart_reg(port, DIVISOR_LATCH_MSB, Data); |
1792 | ||
1793 | /* Disable access to divisor latch */ | |
1794 | Data = mos7840_port->shadowLCR & ~SERIAL_LCR_DLAB; | |
1795 | mos7840_port->shadowLCR = Data; | |
1796 | mos7840_set_uart_reg(port, LINE_CONTROL_REGISTER, Data); | |
1797 | ||
1798 | } | |
3f542974 PS |
1799 | return status; |
1800 | } | |
1801 | ||
1802 | /***************************************************************************** | |
1803 | * mos7840_change_port_settings | |
1804 | * This routine is called to set the UART on the device to match | |
1805 | * the specified new settings. | |
1806 | *****************************************************************************/ | |
1807 | ||
95da310e AC |
1808 | static void mos7840_change_port_settings(struct tty_struct *tty, |
1809 | struct moschip_port *mos7840_port, struct ktermios *old_termios) | |
3f542974 | 1810 | { |
3f542974 PS |
1811 | int baud; |
1812 | unsigned cflag; | |
1813 | unsigned iflag; | |
1814 | __u8 lData; | |
1815 | __u8 lParity; | |
1816 | __u8 lStop; | |
1817 | int status; | |
1818 | __u16 Data; | |
1819 | struct usb_serial_port *port; | |
1820 | struct usb_serial *serial; | |
1821 | ||
1822 | if (mos7840_port == NULL) | |
1823 | return; | |
1824 | ||
9c134a14 | 1825 | port = mos7840_port->port; |
3f542974 | 1826 | |
9c134a14 | 1827 | if (mos7840_port_paranoia_check(port, __func__)) |
3f542974 | 1828 | return; |
3f542974 | 1829 | |
9c134a14 | 1830 | if (mos7840_serial_paranoia_check(port->serial, __func__)) |
3f542974 | 1831 | return; |
3f542974 PS |
1832 | |
1833 | serial = port->serial; | |
1834 | ||
3f542974 | 1835 | if (!mos7840_port->open) { |
9c134a14 | 1836 | dev_dbg(&port->dev, "%s - port not opened\n", __func__); |
3f542974 PS |
1837 | return; |
1838 | } | |
1839 | ||
3f542974 PS |
1840 | lData = LCR_BITS_8; |
1841 | lStop = LCR_STOP_1; | |
1842 | lParity = LCR_PAR_NONE; | |
1843 | ||
adc8d746 AC |
1844 | cflag = tty->termios.c_cflag; |
1845 | iflag = tty->termios.c_iflag; | |
3f542974 PS |
1846 | |
1847 | /* Change the number of bits */ | |
1848 | if (cflag & CSIZE) { | |
1849 | switch (cflag & CSIZE) { | |
1850 | case CS5: | |
1851 | lData = LCR_BITS_5; | |
1852 | break; | |
1853 | ||
1854 | case CS6: | |
1855 | lData = LCR_BITS_6; | |
1856 | break; | |
1857 | ||
1858 | case CS7: | |
1859 | lData = LCR_BITS_7; | |
1860 | break; | |
1861 | default: | |
1862 | case CS8: | |
1863 | lData = LCR_BITS_8; | |
1864 | break; | |
1865 | } | |
1866 | } | |
1867 | /* Change the Parity bit */ | |
1868 | if (cflag & PARENB) { | |
1869 | if (cflag & PARODD) { | |
1870 | lParity = LCR_PAR_ODD; | |
9c134a14 | 1871 | dev_dbg(&port->dev, "%s - parity = odd\n", __func__); |
3f542974 PS |
1872 | } else { |
1873 | lParity = LCR_PAR_EVEN; | |
9c134a14 | 1874 | dev_dbg(&port->dev, "%s - parity = even\n", __func__); |
3f542974 PS |
1875 | } |
1876 | ||
1877 | } else { | |
9c134a14 | 1878 | dev_dbg(&port->dev, "%s - parity = none\n", __func__); |
3f542974 PS |
1879 | } |
1880 | ||
880af9db | 1881 | if (cflag & CMSPAR) |
3f542974 | 1882 | lParity = lParity | 0x20; |
3f542974 PS |
1883 | |
1884 | /* Change the Stop bit */ | |
1885 | if (cflag & CSTOPB) { | |
1886 | lStop = LCR_STOP_2; | |
9c134a14 | 1887 | dev_dbg(&port->dev, "%s - stop bits = 2\n", __func__); |
3f542974 PS |
1888 | } else { |
1889 | lStop = LCR_STOP_1; | |
9c134a14 | 1890 | dev_dbg(&port->dev, "%s - stop bits = 1\n", __func__); |
3f542974 PS |
1891 | } |
1892 | ||
1893 | /* Update the LCR with the correct value */ | |
1894 | mos7840_port->shadowLCR &= | |
1895 | ~(LCR_BITS_MASK | LCR_STOP_MASK | LCR_PAR_MASK); | |
1896 | mos7840_port->shadowLCR |= (lData | lParity | lStop); | |
1897 | ||
9c134a14 GKH |
1898 | dev_dbg(&port->dev, "%s - mos7840_port->shadowLCR is %x\n", __func__, |
1899 | mos7840_port->shadowLCR); | |
3f542974 PS |
1900 | /* Disable Interrupts */ |
1901 | Data = 0x00; | |
1902 | mos7840_set_uart_reg(port, INTERRUPT_ENABLE_REGISTER, Data); | |
1903 | ||
1904 | Data = 0x00; | |
1905 | mos7840_set_uart_reg(port, FIFO_CONTROL_REGISTER, Data); | |
1906 | ||
1907 | Data = 0xcf; | |
1908 | mos7840_set_uart_reg(port, FIFO_CONTROL_REGISTER, Data); | |
1909 | ||
1910 | /* Send the updated LCR value to the mos7840 */ | |
1911 | Data = mos7840_port->shadowLCR; | |
1912 | ||
1913 | mos7840_set_uart_reg(port, LINE_CONTROL_REGISTER, Data); | |
1914 | ||
1915 | Data = 0x00b; | |
1916 | mos7840_port->shadowMCR = Data; | |
1917 | mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, Data); | |
1918 | Data = 0x00b; | |
1919 | mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, Data); | |
1920 | ||
1921 | /* set up the MCR register and send it to the mos7840 */ | |
1922 | ||
1923 | mos7840_port->shadowMCR = MCR_MASTER_IE; | |
880af9db | 1924 | if (cflag & CBAUD) |
3f542974 | 1925 | mos7840_port->shadowMCR |= (MCR_DTR | MCR_RTS); |
3f542974 | 1926 | |
880af9db | 1927 | if (cflag & CRTSCTS) |
3f542974 | 1928 | mos7840_port->shadowMCR |= (MCR_XON_ANY); |
880af9db | 1929 | else |
3f542974 | 1930 | mos7840_port->shadowMCR &= ~(MCR_XON_ANY); |
3f542974 PS |
1931 | |
1932 | Data = mos7840_port->shadowMCR; | |
1933 | mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, Data); | |
1934 | ||
1935 | /* Determine divisor based on baud rate */ | |
1936 | baud = tty_get_baud_rate(tty); | |
1937 | ||
1938 | if (!baud) { | |
1939 | /* pick a default, any default... */ | |
9c134a14 | 1940 | dev_dbg(&port->dev, "%s", "Picked default baud...\n"); |
3f542974 PS |
1941 | baud = 9600; |
1942 | } | |
1943 | ||
9c134a14 | 1944 | dev_dbg(&port->dev, "%s - baud rate = %d\n", __func__, baud); |
3f542974 PS |
1945 | status = mos7840_send_cmd_write_baud_rate(mos7840_port, baud); |
1946 | ||
1947 | /* Enable Interrupts */ | |
1948 | Data = 0x0c; | |
1949 | mos7840_set_uart_reg(port, INTERRUPT_ENABLE_REGISTER, Data); | |
1950 | ||
50de36f7 | 1951 | if (mos7840_port->read_urb_busy == false) { |
50de36f7 | 1952 | mos7840_port->read_urb_busy = true; |
3f542974 | 1953 | status = usb_submit_urb(mos7840_port->read_urb, GFP_ATOMIC); |
3f542974 | 1954 | if (status) { |
9c134a14 | 1955 | dev_dbg(&port->dev, "usb_submit_urb(read bulk) failed, status = %d\n", |
3f542974 | 1956 | status); |
50de36f7 | 1957 | mos7840_port->read_urb_busy = false; |
3f542974 PS |
1958 | } |
1959 | } | |
9c134a14 GKH |
1960 | dev_dbg(&port->dev, "%s - mos7840_port->shadowLCR is End %x\n", __func__, |
1961 | mos7840_port->shadowLCR); | |
3f542974 PS |
1962 | } |
1963 | ||
1964 | /***************************************************************************** | |
1965 | * mos7840_set_termios | |
1966 | * this function is called by the tty driver when it wants to change | |
1967 | * the termios structure | |
1968 | *****************************************************************************/ | |
1969 | ||
95da310e AC |
1970 | static void mos7840_set_termios(struct tty_struct *tty, |
1971 | struct usb_serial_port *port, | |
606d099c | 1972 | struct ktermios *old_termios) |
3f542974 PS |
1973 | { |
1974 | int status; | |
1975 | unsigned int cflag; | |
1976 | struct usb_serial *serial; | |
1977 | struct moschip_port *mos7840_port; | |
3363155b | 1978 | |
9c134a14 | 1979 | if (mos7840_port_paranoia_check(port, __func__)) |
3f542974 | 1980 | return; |
3f542974 PS |
1981 | |
1982 | serial = port->serial; | |
1983 | ||
9c134a14 | 1984 | if (mos7840_serial_paranoia_check(serial, __func__)) |
3f542974 | 1985 | return; |
3f542974 PS |
1986 | |
1987 | mos7840_port = mos7840_get_port_private(port); | |
1988 | ||
1989 | if (mos7840_port == NULL) | |
1990 | return; | |
1991 | ||
3f542974 | 1992 | if (!mos7840_port->open) { |
9c134a14 | 1993 | dev_dbg(&port->dev, "%s - port not opened\n", __func__); |
3f542974 PS |
1994 | return; |
1995 | } | |
1996 | ||
9c134a14 | 1997 | dev_dbg(&port->dev, "%s", "setting termios - \n"); |
3f542974 | 1998 | |
adc8d746 | 1999 | cflag = tty->termios.c_cflag; |
3f542974 | 2000 | |
9c134a14 | 2001 | dev_dbg(&port->dev, "%s - clfag %08x iflag %08x\n", __func__, |
d9a80746 | 2002 | tty->termios.c_cflag, RELEVANT_IFLAG(tty->termios.c_iflag)); |
9c134a14 GKH |
2003 | dev_dbg(&port->dev, "%s - old clfag %08x old iflag %08x\n", __func__, |
2004 | old_termios->c_cflag, RELEVANT_IFLAG(old_termios->c_iflag)); | |
3f542974 PS |
2005 | |
2006 | /* change the port settings to the new ones specified */ | |
2007 | ||
95da310e | 2008 | mos7840_change_port_settings(tty, mos7840_port, old_termios); |
3f542974 PS |
2009 | |
2010 | if (!mos7840_port->read_urb) { | |
9c134a14 | 2011 | dev_dbg(&port->dev, "%s", "URB KILLED !!!!!\n"); |
3f542974 PS |
2012 | return; |
2013 | } | |
2014 | ||
50de36f7 | 2015 | if (mos7840_port->read_urb_busy == false) { |
50de36f7 | 2016 | mos7840_port->read_urb_busy = true; |
3f542974 PS |
2017 | status = usb_submit_urb(mos7840_port->read_urb, GFP_ATOMIC); |
2018 | if (status) { | |
9c134a14 | 2019 | dev_dbg(&port->dev, "usb_submit_urb(read bulk) failed, status = %d\n", |
3f542974 | 2020 | status); |
50de36f7 | 2021 | mos7840_port->read_urb_busy = false; |
3f542974 PS |
2022 | } |
2023 | } | |
3f542974 PS |
2024 | } |
2025 | ||
2026 | /***************************************************************************** | |
2027 | * mos7840_get_lsr_info - get line status register info | |
2028 | * | |
2029 | * Purpose: Let user call ioctl() to get info when the UART physically | |
2030 | * is emptied. On bus types like RS485, the transmitter must | |
2031 | * release the bus after transmitting. This must be done when | |
2032 | * the transmit shift register is empty, not be done when the | |
2033 | * transmit holding register is empty. This functionality | |
2034 | * allows an RS485 driver to be written in user space. | |
2035 | *****************************************************************************/ | |
2036 | ||
95da310e | 2037 | static int mos7840_get_lsr_info(struct tty_struct *tty, |
97c4965d | 2038 | unsigned int __user *value) |
3f542974 PS |
2039 | { |
2040 | int count; | |
2041 | unsigned int result = 0; | |
2042 | ||
95da310e | 2043 | count = mos7840_chars_in_buffer(tty); |
9c134a14 | 2044 | if (count == 0) |
3f542974 | 2045 | result = TIOCSER_TEMT; |
3f542974 PS |
2046 | |
2047 | if (copy_to_user(value, &result, sizeof(int))) | |
2048 | return -EFAULT; | |
2049 | return 0; | |
2050 | } | |
2051 | ||
3f542974 PS |
2052 | /***************************************************************************** |
2053 | * mos7840_get_serial_info | |
2054 | * function to get information about serial port | |
2055 | *****************************************************************************/ | |
2056 | ||
2057 | static int mos7840_get_serial_info(struct moschip_port *mos7840_port, | |
97c4965d | 2058 | struct serial_struct __user *retinfo) |
3f542974 PS |
2059 | { |
2060 | struct serial_struct tmp; | |
2061 | ||
2062 | if (mos7840_port == NULL) | |
2063 | return -1; | |
2064 | ||
2065 | if (!retinfo) | |
2066 | return -EFAULT; | |
2067 | ||
2068 | memset(&tmp, 0, sizeof(tmp)); | |
2069 | ||
2070 | tmp.type = PORT_16550A; | |
e5b1e206 | 2071 | tmp.line = mos7840_port->port->minor; |
1143832e | 2072 | tmp.port = mos7840_port->port->port_number; |
3f542974 PS |
2073 | tmp.irq = 0; |
2074 | tmp.flags = ASYNC_SKIP_TEST | ASYNC_AUTO_IRQ; | |
2075 | tmp.xmit_fifo_size = NUM_URBS * URB_TRANSFER_BUFFER_SIZE; | |
2076 | tmp.baud_base = 9600; | |
2077 | tmp.close_delay = 5 * HZ; | |
2078 | tmp.closing_wait = 30 * HZ; | |
2079 | ||
2080 | if (copy_to_user(retinfo, &tmp, sizeof(*retinfo))) | |
2081 | return -EFAULT; | |
2082 | return 0; | |
2083 | } | |
2084 | ||
2085 | /***************************************************************************** | |
2086 | * SerialIoctl | |
2087 | * this function handles any ioctl calls to the driver | |
2088 | *****************************************************************************/ | |
2089 | ||
00a0d0d6 | 2090 | static int mos7840_ioctl(struct tty_struct *tty, |
3f542974 PS |
2091 | unsigned int cmd, unsigned long arg) |
2092 | { | |
95da310e | 2093 | struct usb_serial_port *port = tty->driver_data; |
97c4965d | 2094 | void __user *argp = (void __user *)arg; |
3f542974 | 2095 | struct moschip_port *mos7840_port; |
3f542974 | 2096 | |
9c134a14 | 2097 | if (mos7840_port_paranoia_check(port, __func__)) |
3f542974 | 2098 | return -1; |
3f542974 PS |
2099 | |
2100 | mos7840_port = mos7840_get_port_private(port); | |
3f542974 PS |
2101 | |
2102 | if (mos7840_port == NULL) | |
2103 | return -1; | |
2104 | ||
9c134a14 | 2105 | dev_dbg(&port->dev, "%s - cmd = 0x%x\n", __func__, cmd); |
3f542974 PS |
2106 | |
2107 | switch (cmd) { | |
2108 | /* return number of bytes available */ | |
2109 | ||
3f542974 | 2110 | case TIOCSERGETLSR: |
9c134a14 | 2111 | dev_dbg(&port->dev, "%s TIOCSERGETLSR\n", __func__); |
95da310e | 2112 | return mos7840_get_lsr_info(tty, argp); |
3f542974 | 2113 | |
3f542974 | 2114 | case TIOCGSERIAL: |
9c134a14 | 2115 | dev_dbg(&port->dev, "%s TIOCGSERIAL\n", __func__); |
97c4965d | 2116 | return mos7840_get_serial_info(mos7840_port, argp); |
3f542974 PS |
2117 | |
2118 | case TIOCSSERIAL: | |
9c134a14 | 2119 | dev_dbg(&port->dev, "%s TIOCSSERIAL\n", __func__); |
3f542974 | 2120 | break; |
3f542974 PS |
2121 | default: |
2122 | break; | |
2123 | } | |
3f542974 PS |
2124 | return -ENOIOCTLCMD; |
2125 | } | |
2126 | ||
0eafe4de D |
2127 | static int mos7810_check(struct usb_serial *serial) |
2128 | { | |
2129 | int i, pass_count = 0; | |
15ee89c3 | 2130 | u8 *buf; |
0eafe4de D |
2131 | __u16 data = 0, mcr_data = 0; |
2132 | __u16 test_pattern = 0x55AA; | |
15ee89c3 JH |
2133 | int res; |
2134 | ||
2135 | buf = kmalloc(VENDOR_READ_LENGTH, GFP_KERNEL); | |
2136 | if (!buf) | |
2137 | return 0; /* failed to identify 7810 */ | |
0eafe4de D |
2138 | |
2139 | /* Store MCR setting */ | |
15ee89c3 | 2140 | res = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), |
0eafe4de | 2141 | MCS_RDREQ, MCS_RD_RTYPE, 0x0300, MODEM_CONTROL_REGISTER, |
15ee89c3 JH |
2142 | buf, VENDOR_READ_LENGTH, MOS_WDR_TIMEOUT); |
2143 | if (res == VENDOR_READ_LENGTH) | |
2144 | mcr_data = *buf; | |
0eafe4de D |
2145 | |
2146 | for (i = 0; i < 16; i++) { | |
2147 | /* Send the 1-bit test pattern out to MCS7810 test pin */ | |
2148 | usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), | |
2149 | MCS_WRREQ, MCS_WR_RTYPE, | |
2150 | (0x0300 | (((test_pattern >> i) & 0x0001) << 1)), | |
2151 | MODEM_CONTROL_REGISTER, NULL, 0, MOS_WDR_TIMEOUT); | |
2152 | ||
2153 | /* Read the test pattern back */ | |
15ee89c3 JH |
2154 | res = usb_control_msg(serial->dev, |
2155 | usb_rcvctrlpipe(serial->dev, 0), MCS_RDREQ, | |
2156 | MCS_RD_RTYPE, 0, GPIO_REGISTER, buf, | |
2157 | VENDOR_READ_LENGTH, MOS_WDR_TIMEOUT); | |
2158 | if (res == VENDOR_READ_LENGTH) | |
2159 | data = *buf; | |
0eafe4de D |
2160 | |
2161 | /* If this is a MCS7810 device, both test patterns must match */ | |
2162 | if (((test_pattern >> i) ^ (~data >> 1)) & 0x0001) | |
2163 | break; | |
2164 | ||
2165 | pass_count++; | |
2166 | } | |
2167 | ||
2168 | /* Restore MCR setting */ | |
2169 | usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), MCS_WRREQ, | |
2170 | MCS_WR_RTYPE, 0x0300 | mcr_data, MODEM_CONTROL_REGISTER, NULL, | |
2171 | 0, MOS_WDR_TIMEOUT); | |
2172 | ||
15ee89c3 JH |
2173 | kfree(buf); |
2174 | ||
0eafe4de D |
2175 | if (pass_count == 16) |
2176 | return 1; | |
2177 | ||
2178 | return 0; | |
2179 | } | |
2180 | ||
3f542974 PS |
2181 | static int mos7840_calc_num_ports(struct usb_serial *serial) |
2182 | { | |
0eafe4de | 2183 | __u16 data = 0x00; |
15ee89c3 | 2184 | u8 *buf; |
093ea2d3 DL |
2185 | int mos7840_num_ports; |
2186 | ||
15ee89c3 JH |
2187 | buf = kzalloc(VENDOR_READ_LENGTH, GFP_KERNEL); |
2188 | if (buf) { | |
2189 | usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), | |
2190 | MCS_RDREQ, MCS_RD_RTYPE, 0, GPIO_REGISTER, buf, | |
2191 | VENDOR_READ_LENGTH, MOS_WDR_TIMEOUT); | |
2192 | data = *buf; | |
2193 | kfree(buf); | |
2194 | } | |
093ea2d3 | 2195 | |
0eafe4de D |
2196 | if (serial->dev->descriptor.idProduct == MOSCHIP_DEVICE_ID_7810 || |
2197 | serial->dev->descriptor.idProduct == MOSCHIP_DEVICE_ID_7820) { | |
2198 | device_type = serial->dev->descriptor.idProduct; | |
093ea2d3 | 2199 | } else { |
0eafe4de D |
2200 | /* For a MCS7840 device GPIO0 must be set to 1 */ |
2201 | if ((data & 0x01) == 1) | |
2202 | device_type = MOSCHIP_DEVICE_ID_7840; | |
2203 | else if (mos7810_check(serial)) | |
2204 | device_type = MOSCHIP_DEVICE_ID_7810; | |
2205 | else | |
2206 | device_type = MOSCHIP_DEVICE_ID_7820; | |
3f542974 | 2207 | } |
093ea2d3 | 2208 | |
0eafe4de D |
2209 | mos7840_num_ports = (device_type >> 4) & 0x000F; |
2210 | serial->num_bulk_in = mos7840_num_ports; | |
2211 | serial->num_bulk_out = mos7840_num_ports; | |
2212 | serial->num_ports = mos7840_num_ports; | |
2213 | ||
3f542974 PS |
2214 | return mos7840_num_ports; |
2215 | } | |
2216 | ||
80c00750 | 2217 | static int mos7840_port_probe(struct usb_serial_port *port) |
3f542974 | 2218 | { |
80c00750 | 2219 | struct usb_serial *serial = port->serial; |
3f542974 | 2220 | struct moschip_port *mos7840_port; |
80c00750 JH |
2221 | int status; |
2222 | int pnum; | |
3f542974 | 2223 | __u16 Data; |
3f542974 | 2224 | |
3f542974 PS |
2225 | /* we set up the pointers to the endpoints in the mos7840_open * |
2226 | * function, as the structures aren't created yet. */ | |
2227 | ||
1143832e | 2228 | pnum = port->port_number; |
80c00750 | 2229 | |
ae685eff JH |
2230 | dev_dbg(&port->dev, "mos7840_startup: configuring port %d\n", pnum); |
2231 | mos7840_port = kzalloc(sizeof(struct moschip_port), GFP_KERNEL); | |
2232 | if (mos7840_port == NULL) { | |
2233 | dev_err(&port->dev, "%s - Out of memory\n", __func__); | |
2234 | return -ENOMEM; | |
2235 | } | |
3f542974 | 2236 | |
ae685eff JH |
2237 | /* Initialize all port interrupt end point to port 0 int |
2238 | * endpoint. Our device has only one interrupt end point | |
2239 | * common to all port */ | |
2240 | ||
2241 | mos7840_port->port = port; | |
2242 | mos7840_set_port_private(port, mos7840_port); | |
2243 | spin_lock_init(&mos7840_port->pool_lock); | |
2244 | ||
2245 | /* minor is not initialised until later by | |
2246 | * usb-serial.c:get_free_serial() and cannot therefore be used | |
2247 | * to index device instances */ | |
2248 | mos7840_port->port_num = pnum + 1; | |
e5b1e206 | 2249 | dev_dbg(&port->dev, "port->minor = %d\n", port->minor); |
ae685eff | 2250 | dev_dbg(&port->dev, "mos7840_port->port_num = %d\n", mos7840_port->port_num); |
ae685eff JH |
2251 | |
2252 | if (mos7840_port->port_num == 1) { | |
2253 | mos7840_port->SpRegOffset = 0x0; | |
2254 | mos7840_port->ControlRegOffset = 0x1; | |
2255 | mos7840_port->DcrRegOffset = 0x4; | |
2256 | } else if ((mos7840_port->port_num == 2) && (serial->num_ports == 4)) { | |
2257 | mos7840_port->SpRegOffset = 0x8; | |
2258 | mos7840_port->ControlRegOffset = 0x9; | |
2259 | mos7840_port->DcrRegOffset = 0x16; | |
2260 | } else if ((mos7840_port->port_num == 2) && (serial->num_ports == 2)) { | |
2261 | mos7840_port->SpRegOffset = 0xa; | |
2262 | mos7840_port->ControlRegOffset = 0xb; | |
2263 | mos7840_port->DcrRegOffset = 0x19; | |
2264 | } else if ((mos7840_port->port_num == 3) && (serial->num_ports == 4)) { | |
2265 | mos7840_port->SpRegOffset = 0xa; | |
2266 | mos7840_port->ControlRegOffset = 0xb; | |
2267 | mos7840_port->DcrRegOffset = 0x19; | |
2268 | } else if ((mos7840_port->port_num == 4) && (serial->num_ports == 4)) { | |
2269 | mos7840_port->SpRegOffset = 0xc; | |
2270 | mos7840_port->ControlRegOffset = 0xd; | |
2271 | mos7840_port->DcrRegOffset = 0x1c; | |
2272 | } | |
2273 | mos7840_dump_serial_port(port, mos7840_port); | |
2274 | mos7840_set_port_private(port, mos7840_port); | |
2275 | ||
2276 | /* enable rx_disable bit in control register */ | |
2277 | status = mos7840_get_reg_sync(port, | |
2278 | mos7840_port->ControlRegOffset, &Data); | |
2279 | if (status < 0) { | |
2280 | dev_dbg(&port->dev, "Reading ControlReg failed status-0x%x\n", status); | |
2281 | goto out; | |
2282 | } else | |
2283 | dev_dbg(&port->dev, "ControlReg Reading success val is %x, status%d\n", Data, status); | |
2284 | Data |= 0x08; /* setting driver done bit */ | |
2285 | Data |= 0x04; /* sp1_bit to have cts change reflect in | |
2286 | modem status reg */ | |
2287 | ||
2288 | /* Data |= 0x20; //rx_disable bit */ | |
2289 | status = mos7840_set_reg_sync(port, | |
2290 | mos7840_port->ControlRegOffset, Data); | |
2291 | if (status < 0) { | |
2292 | dev_dbg(&port->dev, "Writing ControlReg failed(rx_disable) status-0x%x\n", status); | |
2293 | goto out; | |
2294 | } else | |
2295 | dev_dbg(&port->dev, "ControlReg Writing success(rx_disable) status%d\n", status); | |
2296 | ||
2297 | /* Write default values in DCR (i.e 0x01 in DCR0, 0x05 in DCR2 | |
2298 | and 0x24 in DCR3 */ | |
2299 | Data = 0x01; | |
2300 | status = mos7840_set_reg_sync(port, | |
2301 | (__u16) (mos7840_port->DcrRegOffset + 0), Data); | |
2302 | if (status < 0) { | |
2303 | dev_dbg(&port->dev, "Writing DCR0 failed status-0x%x\n", status); | |
2304 | goto out; | |
2305 | } else | |
2306 | dev_dbg(&port->dev, "DCR0 Writing success status%d\n", status); | |
3f542974 | 2307 | |
ae685eff JH |
2308 | Data = 0x05; |
2309 | status = mos7840_set_reg_sync(port, | |
2310 | (__u16) (mos7840_port->DcrRegOffset + 1), Data); | |
2311 | if (status < 0) { | |
2312 | dev_dbg(&port->dev, "Writing DCR1 failed status-0x%x\n", status); | |
2313 | goto out; | |
2314 | } else | |
2315 | dev_dbg(&port->dev, "DCR1 Writing success status%d\n", status); | |
3f542974 | 2316 | |
ae685eff JH |
2317 | Data = 0x24; |
2318 | status = mos7840_set_reg_sync(port, | |
2319 | (__u16) (mos7840_port->DcrRegOffset + 2), Data); | |
2320 | if (status < 0) { | |
2321 | dev_dbg(&port->dev, "Writing DCR2 failed status-0x%x\n", status); | |
2322 | goto out; | |
2323 | } else | |
2324 | dev_dbg(&port->dev, "DCR2 Writing success status%d\n", status); | |
3f542974 | 2325 | |
ae685eff JH |
2326 | /* write values in clkstart0x0 and clkmulti 0x20 */ |
2327 | Data = 0x0; | |
2328 | status = mos7840_set_reg_sync(port, CLK_START_VALUE_REGISTER, Data); | |
2329 | if (status < 0) { | |
2330 | dev_dbg(&port->dev, "Writing CLK_START_VALUE_REGISTER failed status-0x%x\n", status); | |
2331 | goto out; | |
2332 | } else | |
2333 | dev_dbg(&port->dev, "CLK_START_VALUE_REGISTER Writing success status%d\n", status); | |
3f542974 | 2334 | |
ae685eff JH |
2335 | Data = 0x20; |
2336 | status = mos7840_set_reg_sync(port, CLK_MULTI_REGISTER, Data); | |
2337 | if (status < 0) { | |
2338 | dev_dbg(&port->dev, "Writing CLK_MULTI_REGISTER failed status-0x%x\n", status); | |
2339 | goto error; | |
2340 | } else | |
2341 | dev_dbg(&port->dev, "CLK_MULTI_REGISTER Writing success status%d\n", status); | |
3f542974 | 2342 | |
ae685eff JH |
2343 | /* write value 0x0 to scratchpad register */ |
2344 | Data = 0x00; | |
2345 | status = mos7840_set_uart_reg(port, SCRATCH_PAD_REGISTER, Data); | |
2346 | if (status < 0) { | |
2347 | dev_dbg(&port->dev, "Writing SCRATCH_PAD_REGISTER failed status-0x%x\n", status); | |
2348 | goto out; | |
2349 | } else | |
2350 | dev_dbg(&port->dev, "SCRATCH_PAD_REGISTER Writing success status%d\n", status); | |
2351 | ||
2352 | /* Zero Length flag register */ | |
2353 | if ((mos7840_port->port_num != 1) && (serial->num_ports == 2)) { | |
2354 | Data = 0xff; | |
80c00750 | 2355 | status = mos7840_set_reg_sync(port, |
ae685eff JH |
2356 | (__u16) (ZLP_REG1 + |
2357 | ((__u16)mos7840_port->port_num)), Data); | |
2358 | dev_dbg(&port->dev, "ZLIP offset %x\n", | |
2359 | (__u16)(ZLP_REG1 + ((__u16) mos7840_port->port_num))); | |
3f542974 | 2360 | if (status < 0) { |
ae685eff JH |
2361 | dev_dbg(&port->dev, "Writing ZLP_REG%d failed status-0x%x\n", pnum + 2, status); |
2362 | goto out; | |
3f542974 | 2363 | } else |
ae685eff JH |
2364 | dev_dbg(&port->dev, "ZLP_REG%d Writing success status%d\n", pnum + 2, status); |
2365 | } else { | |
2366 | Data = 0xff; | |
80c00750 | 2367 | status = mos7840_set_reg_sync(port, |
ae685eff JH |
2368 | (__u16) (ZLP_REG1 + |
2369 | ((__u16)mos7840_port->port_num) - 0x1), Data); | |
2370 | dev_dbg(&port->dev, "ZLIP offset %x\n", | |
2371 | (__u16)(ZLP_REG1 + ((__u16) mos7840_port->port_num) - 0x1)); | |
3f542974 | 2372 | if (status < 0) { |
ae685eff JH |
2373 | dev_dbg(&port->dev, "Writing ZLP_REG%d failed status-0x%x\n", pnum + 1, status); |
2374 | goto out; | |
3f542974 | 2375 | } else |
ae685eff | 2376 | dev_dbg(&port->dev, "ZLP_REG%d Writing success status%d\n", pnum + 1, status); |
3f542974 | 2377 | |
ae685eff JH |
2378 | } |
2379 | mos7840_port->control_urb = usb_alloc_urb(0, GFP_KERNEL); | |
2380 | mos7840_port->ctrl_buf = kmalloc(16, GFP_KERNEL); | |
2381 | mos7840_port->dr = kmalloc(sizeof(struct usb_ctrlrequest), | |
2382 | GFP_KERNEL); | |
2383 | if (!mos7840_port->control_urb || !mos7840_port->ctrl_buf || | |
2384 | !mos7840_port->dr) { | |
2385 | status = -ENOMEM; | |
2386 | goto error; | |
2387 | } | |
0eafe4de | 2388 | |
ae685eff | 2389 | mos7840_port->has_led = false; |
0eafe4de | 2390 | |
ae685eff JH |
2391 | /* Initialize LED timers */ |
2392 | if (device_type == MOSCHIP_DEVICE_ID_7810) { | |
2393 | mos7840_port->has_led = true; | |
0eafe4de | 2394 | |
ae685eff JH |
2395 | init_timer(&mos7840_port->led_timer1); |
2396 | mos7840_port->led_timer1.function = mos7840_led_off; | |
2397 | mos7840_port->led_timer1.expires = | |
2398 | jiffies + msecs_to_jiffies(LED_ON_MS); | |
2399 | mos7840_port->led_timer1.data = (unsigned long)mos7840_port; | |
0eafe4de | 2400 | |
ae685eff JH |
2401 | init_timer(&mos7840_port->led_timer2); |
2402 | mos7840_port->led_timer2.function = mos7840_led_flag_off; | |
2403 | mos7840_port->led_timer2.expires = | |
2404 | jiffies + msecs_to_jiffies(LED_OFF_MS); | |
2405 | mos7840_port->led_timer2.data = (unsigned long)mos7840_port; | |
0eafe4de | 2406 | |
ae685eff | 2407 | mos7840_port->led_flag = false; |
3f542974 | 2408 | |
ae685eff JH |
2409 | /* Turn off LED */ |
2410 | mos7840_set_led_sync(port, MODEM_CONTROL_REGISTER, 0x0300); | |
2411 | } | |
2412 | out: | |
80c00750 JH |
2413 | if (pnum == serial->num_ports - 1) { |
2414 | /* Zero Length flag enable */ | |
2415 | Data = 0x0f; | |
2416 | status = mos7840_set_reg_sync(serial->port[0], ZLP_REG5, Data); | |
2417 | if (status < 0) { | |
2418 | dev_dbg(&port->dev, "Writing ZLP_REG5 failed status-0x%x\n", status); | |
2419 | goto error; | |
2420 | } else | |
2421 | dev_dbg(&port->dev, "ZLP_REG5 Writing success status%d\n", status); | |
2422 | ||
2423 | /* setting configuration feature to one */ | |
2424 | usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), | |
2425 | 0x03, 0x00, 0x01, 0x00, NULL, 0x00, | |
2426 | MOS_WDR_TIMEOUT); | |
2427 | } | |
3f542974 | 2428 | return 0; |
0de9a702 | 2429 | error: |
80c00750 JH |
2430 | kfree(mos7840_port->dr); |
2431 | kfree(mos7840_port->ctrl_buf); | |
2432 | usb_free_urb(mos7840_port->control_urb); | |
2433 | kfree(mos7840_port); | |
0de9a702 | 2434 | |
0de9a702 | 2435 | return status; |
3f542974 PS |
2436 | } |
2437 | ||
80c00750 | 2438 | static int mos7840_port_remove(struct usb_serial_port *port) |
3f542974 | 2439 | { |
3f542974 | 2440 | struct moschip_port *mos7840_port; |
3f542974 | 2441 | |
80c00750 | 2442 | mos7840_port = mos7840_get_port_private(port); |
3f542974 | 2443 | |
80c00750 JH |
2444 | if (mos7840_port->has_led) { |
2445 | /* Turn off LED */ | |
2446 | mos7840_set_led_sync(port, MODEM_CONTROL_REGISTER, 0x0300); | |
3f542974 | 2447 | |
80c00750 JH |
2448 | del_timer_sync(&mos7840_port->led_timer1); |
2449 | del_timer_sync(&mos7840_port->led_timer2); | |
f9c99bb8 | 2450 | } |
80c00750 JH |
2451 | usb_kill_urb(mos7840_port->control_urb); |
2452 | usb_free_urb(mos7840_port->control_urb); | |
2453 | kfree(mos7840_port->ctrl_buf); | |
2454 | kfree(mos7840_port->dr); | |
2455 | kfree(mos7840_port); | |
f9c99bb8 | 2456 | |
80c00750 | 2457 | return 0; |
3f542974 PS |
2458 | } |
2459 | ||
2460 | static struct usb_serial_driver moschip7840_4port_device = { | |
2461 | .driver = { | |
2462 | .owner = THIS_MODULE, | |
2463 | .name = "mos7840", | |
2464 | }, | |
2465 | .description = DRIVER_DESC, | |
68e24113 | 2466 | .id_table = id_table, |
3f542974 | 2467 | .num_ports = 4, |
3f542974 PS |
2468 | .open = mos7840_open, |
2469 | .close = mos7840_close, | |
2470 | .write = mos7840_write, | |
2471 | .write_room = mos7840_write_room, | |
2472 | .chars_in_buffer = mos7840_chars_in_buffer, | |
2473 | .throttle = mos7840_throttle, | |
2474 | .unthrottle = mos7840_unthrottle, | |
2475 | .calc_num_ports = mos7840_calc_num_ports, | |
2476 | #ifdef MCSSerialProbe | |
2477 | .probe = mos7840_serial_probe, | |
2478 | #endif | |
2479 | .ioctl = mos7840_ioctl, | |
2480 | .set_termios = mos7840_set_termios, | |
2481 | .break_ctl = mos7840_break, | |
2482 | .tiocmget = mos7840_tiocmget, | |
2483 | .tiocmset = mos7840_tiocmset, | |
0c613371 | 2484 | .tiocmiwait = usb_serial_generic_tiocmiwait, |
8c1a07ff | 2485 | .get_icount = usb_serial_generic_get_icount, |
80c00750 JH |
2486 | .port_probe = mos7840_port_probe, |
2487 | .port_remove = mos7840_port_remove, | |
3f542974 PS |
2488 | .read_bulk_callback = mos7840_bulk_in_callback, |
2489 | .read_int_callback = mos7840_interrupt_callback, | |
2490 | }; | |
2491 | ||
4d2a7aff AS |
2492 | static struct usb_serial_driver * const serial_drivers[] = { |
2493 | &moschip7840_4port_device, NULL | |
2494 | }; | |
2495 | ||
68e24113 | 2496 | module_usb_serial_driver(serial_drivers, id_table); |
3f542974 | 2497 | |
3f542974 PS |
2498 | MODULE_DESCRIPTION(DRIVER_DESC); |
2499 | MODULE_LICENSE("GPL"); |