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3f542974 PS |
1 | /* |
2 | * This program is free software; you can redistribute it and/or modify | |
3 | * it under the terms of the GNU General Public License as published by | |
4 | * the Free Software Foundation; either version 2 of the License, or | |
5 | * (at your option) any later version. | |
6 | * | |
7 | * This program is distributed in the hope that it will be useful, | |
8 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
9 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
10 | * GNU General Public License for more details. | |
11 | * | |
12 | * You should have received a copy of the GNU General Public License | |
13 | * along with this program; if not, write to the Free Software | |
14 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
15 | * | |
16 | * Clean ups from Moschip version and a few ioctl implementations by: | |
17 | * Paul B Schroeder <pschroeder "at" uplogix "dot" com> | |
18 | * | |
19 | * Originally based on drivers/usb/serial/io_edgeport.c which is: | |
20 | * Copyright (C) 2000 Inside Out Networks, All rights reserved. | |
21 | * Copyright (C) 2001-2002 Greg Kroah-Hartman <greg@kroah.com> | |
22 | * | |
23 | */ | |
24 | ||
25 | #include <linux/kernel.h> | |
26 | #include <linux/errno.h> | |
27 | #include <linux/init.h> | |
28 | #include <linux/slab.h> | |
29 | #include <linux/tty.h> | |
30 | #include <linux/tty_driver.h> | |
31 | #include <linux/tty_flip.h> | |
32 | #include <linux/module.h> | |
33 | #include <linux/serial.h> | |
34 | #include <linux/usb.h> | |
35 | #include <linux/usb/serial.h> | |
880af9db | 36 | #include <linux/uaccess.h> |
3f542974 | 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 | ||
d8a083cc JH |
186 | enum mos7840_flag { |
187 | MOS7840_FLAG_CTRL_BUSY, | |
05cf0dec | 188 | MOS7840_FLAG_LED_BUSY, |
d8a083cc JH |
189 | }; |
190 | ||
b9c87663 | 191 | static const struct usb_device_id id_table[] = { |
3f542974 PS |
192 | {USB_DEVICE(USB_VENDOR_ID_MOSCHIP, MOSCHIP_DEVICE_ID_7840)}, |
193 | {USB_DEVICE(USB_VENDOR_ID_MOSCHIP, MOSCHIP_DEVICE_ID_7820)}, | |
0eafe4de | 194 | {USB_DEVICE(USB_VENDOR_ID_MOSCHIP, MOSCHIP_DEVICE_ID_7810)}, |
acf509ae | 195 | {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USO9ML2_2)}, |
870408c8 | 196 | {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USO9ML2_2P)}, |
acf509ae | 197 | {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USO9ML2_4)}, |
870408c8 | 198 | {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USO9ML2_4P)}, |
acf509ae CB |
199 | {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_US9ML2_2)}, |
200 | {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_US9ML2_4)}, | |
201 | {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USPTL4_2)}, | |
202 | {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USPTL4_4)}, | |
11e1abb4 | 203 | {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USOPTL4_2)}, |
870408c8 | 204 | {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USOPTL4_2P)}, |
acf509ae | 205 | {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USOPTL4_4)}, |
870408c8 | 206 | {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USOPTL4_4P)}, |
27f1281d | 207 | {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USOPTL2_4)}, |
e9b8cffa | 208 | {USB_DEVICE(USB_VENDOR_ID_ATENINTL, ATENINTL_DEVICE_ID_UC2324)}, |
9d498bea | 209 | {USB_DEVICE(USB_VENDOR_ID_ATENINTL, ATENINTL_DEVICE_ID_UC2322)}, |
3f542974 PS |
210 | {} /* terminating entry */ |
211 | }; | |
68e24113 | 212 | MODULE_DEVICE_TABLE(usb, id_table); |
3f542974 PS |
213 | |
214 | /* This structure holds all of the local port information */ | |
215 | ||
216 | struct moschip_port { | |
217 | int port_num; /*Actual port number in the device(1,2,etc) */ | |
218 | struct urb *write_urb; /* write URB for this port */ | |
219 | struct urb *read_urb; /* read URB for this port */ | |
220 | __u8 shadowLCR; /* last LCR value received */ | |
221 | __u8 shadowMCR; /* last MCR value received */ | |
222 | char open; | |
0de9a702 | 223 | char open_ports; |
3f542974 | 224 | wait_queue_head_t wait_chase; /* for handling sleeping while waiting for chase to finish */ |
3f542974 PS |
225 | struct usb_serial_port *port; /* loop back to the owner of this object */ |
226 | ||
880af9db | 227 | /* Offsets */ |
3f542974 PS |
228 | __u8 SpRegOffset; |
229 | __u8 ControlRegOffset; | |
230 | __u8 DcrRegOffset; | |
880af9db | 231 | /* for processing control URBS in interrupt context */ |
3f542974 | 232 | struct urb *control_urb; |
0de9a702 | 233 | struct usb_ctrlrequest *dr; |
3f542974 PS |
234 | char *ctrl_buf; |
235 | int MsrLsr; | |
236 | ||
0de9a702 | 237 | spinlock_t pool_lock; |
3f542974 | 238 | struct urb *write_urb_pool[NUM_URBS]; |
0de9a702 | 239 | char busy[NUM_URBS]; |
50de36f7 | 240 | bool read_urb_busy; |
3f542974 | 241 | |
0eafe4de D |
242 | /* For device(s) with LED indicator */ |
243 | bool has_led; | |
0eafe4de D |
244 | struct timer_list led_timer1; /* Timer for LED on */ |
245 | struct timer_list led_timer2; /* Timer for LED off */ | |
05cf0dec JH |
246 | struct urb *led_urb; |
247 | struct usb_ctrlrequest *led_dr; | |
d8a083cc JH |
248 | |
249 | unsigned long flags; | |
0eafe4de | 250 | }; |
3f542974 | 251 | |
3f542974 PS |
252 | /* |
253 | * mos7840_set_reg_sync | |
254 | * To set the Control register by calling usb_fill_control_urb function | |
255 | * by passing usb_sndctrlpipe function as parameter. | |
256 | */ | |
257 | ||
258 | static int mos7840_set_reg_sync(struct usb_serial_port *port, __u16 reg, | |
259 | __u16 val) | |
260 | { | |
261 | struct usb_device *dev = port->serial->dev; | |
262 | val = val & 0x00ff; | |
9c134a14 | 263 | dev_dbg(&port->dev, "mos7840_set_reg_sync offset is %x, value %x\n", reg, val); |
3f542974 PS |
264 | |
265 | return usb_control_msg(dev, usb_sndctrlpipe(dev, 0), MCS_WRREQ, | |
266 | MCS_WR_RTYPE, val, reg, NULL, 0, | |
267 | MOS_WDR_TIMEOUT); | |
268 | } | |
269 | ||
270 | /* | |
271 | * mos7840_get_reg_sync | |
272 | * To set the Uart register by calling usb_fill_control_urb function by | |
273 | * passing usb_rcvctrlpipe function as parameter. | |
274 | */ | |
275 | ||
276 | static int mos7840_get_reg_sync(struct usb_serial_port *port, __u16 reg, | |
880af9db | 277 | __u16 *val) |
3f542974 PS |
278 | { |
279 | struct usb_device *dev = port->serial->dev; | |
280 | int ret = 0; | |
9e221a35 JH |
281 | u8 *buf; |
282 | ||
283 | buf = kmalloc(VENDOR_READ_LENGTH, GFP_KERNEL); | |
284 | if (!buf) | |
285 | return -ENOMEM; | |
3f542974 PS |
286 | |
287 | ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), MCS_RDREQ, | |
9e221a35 | 288 | MCS_RD_RTYPE, 0, reg, buf, VENDOR_READ_LENGTH, |
3f542974 | 289 | MOS_WDR_TIMEOUT); |
9e221a35 | 290 | *val = buf[0]; |
9c134a14 | 291 | dev_dbg(&port->dev, "%s offset is %x, return val %x\n", __func__, reg, *val); |
9e221a35 JH |
292 | |
293 | kfree(buf); | |
3f542974 PS |
294 | return ret; |
295 | } | |
296 | ||
297 | /* | |
298 | * mos7840_set_uart_reg | |
299 | * To set the Uart register by calling usb_fill_control_urb function by | |
300 | * passing usb_sndctrlpipe function as parameter. | |
301 | */ | |
302 | ||
303 | static int mos7840_set_uart_reg(struct usb_serial_port *port, __u16 reg, | |
304 | __u16 val) | |
305 | { | |
306 | ||
307 | struct usb_device *dev = port->serial->dev; | |
308 | val = val & 0x00ff; | |
880af9db AC |
309 | /* For the UART control registers, the application number need |
310 | to be Or'ed */ | |
0de9a702 | 311 | if (port->serial->num_ports == 4) { |
1143832e | 312 | val |= ((__u16)port->port_number + 1) << 8; |
3f542974 | 313 | } else { |
1143832e GKH |
314 | if (port->port_number == 0) { |
315 | val |= ((__u16)port->port_number + 1) << 8; | |
3f542974 | 316 | } else { |
1143832e | 317 | val |= ((__u16)port->port_number + 2) << 8; |
3f542974 PS |
318 | } |
319 | } | |
9c134a14 | 320 | dev_dbg(&port->dev, "%s application number is %x\n", __func__, val); |
3f542974 PS |
321 | return usb_control_msg(dev, usb_sndctrlpipe(dev, 0), MCS_WRREQ, |
322 | MCS_WR_RTYPE, val, reg, NULL, 0, | |
323 | MOS_WDR_TIMEOUT); | |
324 | ||
325 | } | |
326 | ||
327 | /* | |
328 | * mos7840_get_uart_reg | |
329 | * To set the Control register by calling usb_fill_control_urb function | |
330 | * by passing usb_rcvctrlpipe function as parameter. | |
331 | */ | |
332 | static int mos7840_get_uart_reg(struct usb_serial_port *port, __u16 reg, | |
880af9db | 333 | __u16 *val) |
3f542974 PS |
334 | { |
335 | struct usb_device *dev = port->serial->dev; | |
336 | int ret = 0; | |
337 | __u16 Wval; | |
9e221a35 JH |
338 | u8 *buf; |
339 | ||
340 | buf = kmalloc(VENDOR_READ_LENGTH, GFP_KERNEL); | |
341 | if (!buf) | |
342 | return -ENOMEM; | |
3f542974 | 343 | |
880af9db | 344 | /* Wval is same as application number */ |
0de9a702 | 345 | if (port->serial->num_ports == 4) { |
1143832e | 346 | Wval = ((__u16)port->port_number + 1) << 8; |
3f542974 | 347 | } else { |
1143832e GKH |
348 | if (port->port_number == 0) { |
349 | Wval = ((__u16)port->port_number + 1) << 8; | |
3f542974 | 350 | } else { |
1143832e | 351 | Wval = ((__u16)port->port_number + 2) << 8; |
3f542974 PS |
352 | } |
353 | } | |
9c134a14 | 354 | dev_dbg(&port->dev, "%s application number is %x\n", __func__, Wval); |
3f542974 | 355 | ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), MCS_RDREQ, |
9e221a35 | 356 | MCS_RD_RTYPE, Wval, reg, buf, VENDOR_READ_LENGTH, |
3f542974 | 357 | MOS_WDR_TIMEOUT); |
9e221a35 JH |
358 | *val = buf[0]; |
359 | ||
360 | kfree(buf); | |
3f542974 PS |
361 | return ret; |
362 | } | |
363 | ||
9c134a14 GKH |
364 | static void mos7840_dump_serial_port(struct usb_serial_port *port, |
365 | struct moschip_port *mos7840_port) | |
3f542974 PS |
366 | { |
367 | ||
9c134a14 GKH |
368 | dev_dbg(&port->dev, "SpRegOffset is %2x\n", mos7840_port->SpRegOffset); |
369 | dev_dbg(&port->dev, "ControlRegOffset is %2x\n", mos7840_port->ControlRegOffset); | |
370 | dev_dbg(&port->dev, "DCRRegOffset is %2x\n", mos7840_port->DcrRegOffset); | |
3f542974 PS |
371 | |
372 | } | |
373 | ||
374 | /************************************************************************/ | |
375 | /************************************************************************/ | |
376 | /* I N T E R F A C E F U N C T I O N S */ | |
377 | /* I N T E R F A C E F U N C T I O N S */ | |
378 | /************************************************************************/ | |
379 | /************************************************************************/ | |
380 | ||
381 | static inline void mos7840_set_port_private(struct usb_serial_port *port, | |
382 | struct moschip_port *data) | |
383 | { | |
384 | usb_set_serial_port_data(port, (void *)data); | |
385 | } | |
386 | ||
387 | static inline struct moschip_port *mos7840_get_port_private(struct | |
388 | usb_serial_port | |
389 | *port) | |
390 | { | |
391 | return (struct moschip_port *)usb_get_serial_port_data(port); | |
392 | } | |
393 | ||
0de9a702 | 394 | static void mos7840_handle_new_msr(struct moschip_port *port, __u8 new_msr) |
3f542974 PS |
395 | { |
396 | struct moschip_port *mos7840_port; | |
397 | struct async_icount *icount; | |
398 | mos7840_port = port; | |
3f542974 PS |
399 | if (new_msr & |
400 | (MOS_MSR_DELTA_CTS | MOS_MSR_DELTA_DSR | MOS_MSR_DELTA_RI | | |
401 | MOS_MSR_DELTA_CD)) { | |
8c1a07ff | 402 | icount = &mos7840_port->port->icount; |
3f542974 PS |
403 | |
404 | /* update input line counters */ | |
c9fac853 | 405 | if (new_msr & MOS_MSR_DELTA_CTS) |
3f542974 | 406 | icount->cts++; |
c9fac853 | 407 | if (new_msr & MOS_MSR_DELTA_DSR) |
3f542974 | 408 | icount->dsr++; |
c9fac853 | 409 | if (new_msr & MOS_MSR_DELTA_CD) |
3f542974 | 410 | icount->dcd++; |
c9fac853 | 411 | if (new_msr & MOS_MSR_DELTA_RI) |
3f542974 | 412 | icount->rng++; |
e670c6af | 413 | |
0c613371 | 414 | wake_up_interruptible(&port->port->port.delta_msr_wait); |
3f542974 | 415 | } |
3f542974 PS |
416 | } |
417 | ||
0de9a702 | 418 | static void mos7840_handle_new_lsr(struct moschip_port *port, __u8 new_lsr) |
3f542974 PS |
419 | { |
420 | struct async_icount *icount; | |
421 | ||
3f542974 | 422 | if (new_lsr & SERIAL_LSR_BI) { |
880af9db AC |
423 | /* |
424 | * Parity and Framing errors only count if they | |
425 | * occur exclusive of a break being | |
426 | * received. | |
427 | */ | |
3f542974 PS |
428 | new_lsr &= (__u8) (SERIAL_LSR_OE | SERIAL_LSR_BI); |
429 | } | |
430 | ||
431 | /* update input line counters */ | |
8c1a07ff | 432 | icount = &port->port->icount; |
c9fac853 | 433 | if (new_lsr & SERIAL_LSR_BI) |
3f542974 | 434 | icount->brk++; |
c9fac853 | 435 | if (new_lsr & SERIAL_LSR_OE) |
3f542974 | 436 | icount->overrun++; |
c9fac853 | 437 | if (new_lsr & SERIAL_LSR_PE) |
3f542974 | 438 | icount->parity++; |
c9fac853 | 439 | if (new_lsr & SERIAL_LSR_FE) |
3f542974 | 440 | icount->frame++; |
3f542974 PS |
441 | } |
442 | ||
443 | /************************************************************************/ | |
444 | /************************************************************************/ | |
445 | /* U S B C A L L B A C K F U N C T I O N S */ | |
446 | /* U S B C A L L B A C K F U N C T I O N S */ | |
447 | /************************************************************************/ | |
448 | /************************************************************************/ | |
449 | ||
7d12e780 | 450 | static void mos7840_control_callback(struct urb *urb) |
3f542974 PS |
451 | { |
452 | unsigned char *data; | |
453 | struct moschip_port *mos7840_port; | |
9c134a14 | 454 | struct device *dev = &urb->dev->dev; |
3f542974 | 455 | __u8 regval = 0x0; |
0643c724 | 456 | int status = urb->status; |
3f542974 | 457 | |
cdc97792 | 458 | mos7840_port = urb->context; |
0de9a702 | 459 | |
0643c724 | 460 | switch (status) { |
3f542974 PS |
461 | case 0: |
462 | /* success */ | |
463 | break; | |
464 | case -ECONNRESET: | |
465 | case -ENOENT: | |
466 | case -ESHUTDOWN: | |
467 | /* this urb is terminated, clean up */ | |
9c134a14 | 468 | dev_dbg(dev, "%s - urb shutting down with status: %d\n", __func__, status); |
d8a083cc | 469 | goto out; |
3f542974 | 470 | default: |
9c134a14 | 471 | dev_dbg(dev, "%s - nonzero urb status received: %d\n", __func__, status); |
d8a083cc | 472 | goto out; |
3f542974 PS |
473 | } |
474 | ||
9c134a14 GKH |
475 | dev_dbg(dev, "%s urb buffer size is %d\n", __func__, urb->actual_length); |
476 | dev_dbg(dev, "%s mos7840_port->MsrLsr is %d port %d\n", __func__, | |
477 | mos7840_port->MsrLsr, mos7840_port->port_num); | |
3f542974 PS |
478 | data = urb->transfer_buffer; |
479 | regval = (__u8) data[0]; | |
9c134a14 | 480 | dev_dbg(dev, "%s data is %x\n", __func__, regval); |
3f542974 PS |
481 | if (mos7840_port->MsrLsr == 0) |
482 | mos7840_handle_new_msr(mos7840_port, regval); | |
483 | else if (mos7840_port->MsrLsr == 1) | |
484 | mos7840_handle_new_lsr(mos7840_port, regval); | |
d8a083cc JH |
485 | out: |
486 | clear_bit_unlock(MOS7840_FLAG_CTRL_BUSY, &mos7840_port->flags); | |
3f542974 PS |
487 | } |
488 | ||
489 | static int mos7840_get_reg(struct moschip_port *mcs, __u16 Wval, __u16 reg, | |
880af9db | 490 | __u16 *val) |
3f542974 PS |
491 | { |
492 | struct usb_device *dev = mcs->port->serial->dev; | |
0de9a702 ON |
493 | struct usb_ctrlrequest *dr = mcs->dr; |
494 | unsigned char *buffer = mcs->ctrl_buf; | |
495 | int ret; | |
3f542974 | 496 | |
d8a083cc JH |
497 | if (test_and_set_bit_lock(MOS7840_FLAG_CTRL_BUSY, &mcs->flags)) |
498 | return -EBUSY; | |
499 | ||
3f542974 PS |
500 | dr->bRequestType = MCS_RD_RTYPE; |
501 | dr->bRequest = MCS_RDREQ; | |
880af9db | 502 | dr->wValue = cpu_to_le16(Wval); /* 0 */ |
3f542974 PS |
503 | dr->wIndex = cpu_to_le16(reg); |
504 | dr->wLength = cpu_to_le16(2); | |
505 | ||
506 | usb_fill_control_urb(mcs->control_urb, dev, usb_rcvctrlpipe(dev, 0), | |
507 | (unsigned char *)dr, buffer, 2, | |
508 | mos7840_control_callback, mcs); | |
509 | mcs->control_urb->transfer_buffer_length = 2; | |
510 | ret = usb_submit_urb(mcs->control_urb, GFP_ATOMIC); | |
d8a083cc JH |
511 | if (ret) |
512 | clear_bit_unlock(MOS7840_FLAG_CTRL_BUSY, &mcs->flags); | |
513 | ||
3f542974 PS |
514 | return ret; |
515 | } | |
516 | ||
0eafe4de D |
517 | static void mos7840_set_led_callback(struct urb *urb) |
518 | { | |
519 | switch (urb->status) { | |
520 | case 0: | |
521 | /* Success */ | |
522 | break; | |
523 | case -ECONNRESET: | |
524 | case -ENOENT: | |
525 | case -ESHUTDOWN: | |
526 | /* This urb is terminated, clean up */ | |
9c134a14 GKH |
527 | dev_dbg(&urb->dev->dev, "%s - urb shutting down with status: %d", |
528 | __func__, urb->status); | |
0eafe4de D |
529 | break; |
530 | default: | |
9c134a14 GKH |
531 | dev_dbg(&urb->dev->dev, "%s - nonzero urb status received: %d", |
532 | __func__, urb->status); | |
0eafe4de D |
533 | } |
534 | } | |
535 | ||
536 | static void mos7840_set_led_async(struct moschip_port *mcs, __u16 wval, | |
537 | __u16 reg) | |
538 | { | |
539 | struct usb_device *dev = mcs->port->serial->dev; | |
05cf0dec | 540 | struct usb_ctrlrequest *dr = mcs->led_dr; |
0eafe4de D |
541 | |
542 | dr->bRequestType = MCS_WR_RTYPE; | |
543 | dr->bRequest = MCS_WRREQ; | |
544 | dr->wValue = cpu_to_le16(wval); | |
545 | dr->wIndex = cpu_to_le16(reg); | |
546 | dr->wLength = cpu_to_le16(0); | |
547 | ||
05cf0dec | 548 | usb_fill_control_urb(mcs->led_urb, dev, usb_sndctrlpipe(dev, 0), |
0eafe4de D |
549 | (unsigned char *)dr, NULL, 0, mos7840_set_led_callback, NULL); |
550 | ||
05cf0dec | 551 | usb_submit_urb(mcs->led_urb, GFP_ATOMIC); |
0eafe4de D |
552 | } |
553 | ||
554 | static void mos7840_set_led_sync(struct usb_serial_port *port, __u16 reg, | |
555 | __u16 val) | |
556 | { | |
557 | struct usb_device *dev = port->serial->dev; | |
558 | ||
559 | usb_control_msg(dev, usb_sndctrlpipe(dev, 0), MCS_WRREQ, MCS_WR_RTYPE, | |
560 | val, reg, NULL, 0, MOS_WDR_TIMEOUT); | |
561 | } | |
562 | ||
563 | static void mos7840_led_off(unsigned long arg) | |
564 | { | |
565 | struct moschip_port *mcs = (struct moschip_port *) arg; | |
566 | ||
567 | /* Turn off LED */ | |
568 | mos7840_set_led_async(mcs, 0x0300, MODEM_CONTROL_REGISTER); | |
569 | mod_timer(&mcs->led_timer2, | |
570 | jiffies + msecs_to_jiffies(LED_OFF_MS)); | |
571 | } | |
572 | ||
573 | static void mos7840_led_flag_off(unsigned long arg) | |
574 | { | |
575 | struct moschip_port *mcs = (struct moschip_port *) arg; | |
576 | ||
05cf0dec JH |
577 | clear_bit_unlock(MOS7840_FLAG_LED_BUSY, &mcs->flags); |
578 | } | |
579 | ||
580 | static void mos7840_led_activity(struct usb_serial_port *port) | |
581 | { | |
582 | struct moschip_port *mos7840_port = usb_get_serial_port_data(port); | |
583 | ||
584 | if (test_and_set_bit_lock(MOS7840_FLAG_LED_BUSY, &mos7840_port->flags)) | |
585 | return; | |
586 | ||
587 | mos7840_set_led_async(mos7840_port, 0x0301, MODEM_CONTROL_REGISTER); | |
588 | mod_timer(&mos7840_port->led_timer1, | |
589 | jiffies + msecs_to_jiffies(LED_ON_MS)); | |
0eafe4de D |
590 | } |
591 | ||
3f542974 PS |
592 | /***************************************************************************** |
593 | * mos7840_interrupt_callback | |
594 | * this is the callback function for when we have received data on the | |
595 | * interrupt endpoint. | |
596 | *****************************************************************************/ | |
597 | ||
7d12e780 | 598 | static void mos7840_interrupt_callback(struct urb *urb) |
3f542974 PS |
599 | { |
600 | int result; | |
601 | int length; | |
602 | struct moschip_port *mos7840_port; | |
603 | struct usb_serial *serial; | |
604 | __u16 Data; | |
605 | unsigned char *data; | |
606 | __u8 sp[5], st; | |
0de9a702 ON |
607 | int i, rv = 0; |
608 | __u16 wval, wreg = 0; | |
0643c724 | 609 | int status = urb->status; |
3f542974 | 610 | |
0643c724 | 611 | switch (status) { |
3f542974 PS |
612 | case 0: |
613 | /* success */ | |
614 | break; | |
615 | case -ECONNRESET: | |
616 | case -ENOENT: | |
617 | case -ESHUTDOWN: | |
618 | /* this urb is terminated, clean up */ | |
9c134a14 GKH |
619 | dev_dbg(&urb->dev->dev, "%s - urb shutting down with status: %d\n", |
620 | __func__, status); | |
3f542974 PS |
621 | return; |
622 | default: | |
9c134a14 GKH |
623 | dev_dbg(&urb->dev->dev, "%s - nonzero urb status received: %d\n", |
624 | __func__, status); | |
3f542974 PS |
625 | goto exit; |
626 | } | |
627 | ||
628 | length = urb->actual_length; | |
629 | data = urb->transfer_buffer; | |
630 | ||
cdc97792 | 631 | serial = urb->context; |
3f542974 PS |
632 | |
633 | /* Moschip get 5 bytes | |
634 | * Byte 1 IIR Port 1 (port.number is 0) | |
635 | * Byte 2 IIR Port 2 (port.number is 1) | |
636 | * Byte 3 IIR Port 3 (port.number is 2) | |
637 | * Byte 4 IIR Port 4 (port.number is 3) | |
638 | * Byte 5 FIFO status for both */ | |
639 | ||
640 | if (length && length > 5) { | |
9c134a14 | 641 | dev_dbg(&urb->dev->dev, "%s", "Wrong data !!!\n"); |
3f542974 PS |
642 | return; |
643 | } | |
644 | ||
645 | sp[0] = (__u8) data[0]; | |
646 | sp[1] = (__u8) data[1]; | |
647 | sp[2] = (__u8) data[2]; | |
648 | sp[3] = (__u8) data[3]; | |
649 | st = (__u8) data[4]; | |
650 | ||
651 | for (i = 0; i < serial->num_ports; i++) { | |
652 | mos7840_port = mos7840_get_port_private(serial->port[i]); | |
1143832e | 653 | wval = ((__u16)serial->port[i]->port_number + 1) << 8; |
3f542974 PS |
654 | if (mos7840_port->open) { |
655 | if (sp[i] & 0x01) { | |
9c134a14 | 656 | dev_dbg(&urb->dev->dev, "SP%d No Interrupt !!!\n", i); |
3f542974 PS |
657 | } else { |
658 | switch (sp[i] & 0x0f) { | |
659 | case SERIAL_IIR_RLS: | |
9c134a14 GKH |
660 | dev_dbg(&urb->dev->dev, "Serial Port %d: Receiver status error or \n", i); |
661 | dev_dbg(&urb->dev->dev, "address bit detected in 9-bit mode\n"); | |
3f542974 | 662 | mos7840_port->MsrLsr = 1; |
0de9a702 | 663 | wreg = LINE_STATUS_REGISTER; |
3f542974 PS |
664 | break; |
665 | case SERIAL_IIR_MS: | |
9c134a14 | 666 | dev_dbg(&urb->dev->dev, "Serial Port %d: Modem status change\n", i); |
3f542974 | 667 | mos7840_port->MsrLsr = 0; |
0de9a702 | 668 | wreg = MODEM_STATUS_REGISTER; |
3f542974 PS |
669 | break; |
670 | } | |
e681b66f | 671 | rv = mos7840_get_reg(mos7840_port, wval, wreg, &Data); |
3f542974 PS |
672 | } |
673 | } | |
674 | } | |
880af9db AC |
675 | if (!(rv < 0)) |
676 | /* the completion handler for the control urb will resubmit */ | |
0de9a702 ON |
677 | return; |
678 | exit: | |
3f542974 PS |
679 | result = usb_submit_urb(urb, GFP_ATOMIC); |
680 | if (result) { | |
681 | dev_err(&urb->dev->dev, | |
682 | "%s - Error %d submitting interrupt urb\n", | |
441b62c1 | 683 | __func__, result); |
3f542974 | 684 | } |
3f542974 PS |
685 | } |
686 | ||
687 | static int mos7840_port_paranoia_check(struct usb_serial_port *port, | |
688 | const char *function) | |
689 | { | |
690 | if (!port) { | |
9c134a14 | 691 | pr_debug("%s - port == NULL\n", function); |
3f542974 PS |
692 | return -1; |
693 | } | |
694 | if (!port->serial) { | |
9c134a14 | 695 | pr_debug("%s - port->serial == NULL\n", function); |
3f542974 PS |
696 | return -1; |
697 | } | |
698 | ||
699 | return 0; | |
700 | } | |
701 | ||
702 | /* Inline functions to check the sanity of a pointer that is passed to us */ | |
703 | static int mos7840_serial_paranoia_check(struct usb_serial *serial, | |
704 | const char *function) | |
705 | { | |
706 | if (!serial) { | |
9c134a14 | 707 | pr_debug("%s - serial == NULL\n", function); |
3f542974 PS |
708 | return -1; |
709 | } | |
710 | if (!serial->type) { | |
9c134a14 | 711 | pr_debug("%s - serial->type == NULL!\n", function); |
3f542974 PS |
712 | return -1; |
713 | } | |
714 | ||
715 | return 0; | |
716 | } | |
717 | ||
718 | static struct usb_serial *mos7840_get_usb_serial(struct usb_serial_port *port, | |
719 | const char *function) | |
720 | { | |
721 | /* if no port was specified, or it fails a paranoia check */ | |
722 | if (!port || | |
723 | mos7840_port_paranoia_check(port, function) || | |
724 | mos7840_serial_paranoia_check(port->serial, function)) { | |
880af9db AC |
725 | /* then say that we don't have a valid usb_serial thing, |
726 | * which will end up genrating -ENODEV return values */ | |
3f542974 PS |
727 | return NULL; |
728 | } | |
729 | ||
730 | return port->serial; | |
731 | } | |
732 | ||
733 | /***************************************************************************** | |
734 | * mos7840_bulk_in_callback | |
735 | * this is the callback function for when we have received data on the | |
736 | * bulk in endpoint. | |
737 | *****************************************************************************/ | |
738 | ||
7d12e780 | 739 | static void mos7840_bulk_in_callback(struct urb *urb) |
3f542974 | 740 | { |
0643c724 | 741 | int retval; |
3f542974 PS |
742 | unsigned char *data; |
743 | struct usb_serial *serial; | |
744 | struct usb_serial_port *port; | |
745 | struct moschip_port *mos7840_port; | |
0643c724 | 746 | int status = urb->status; |
3f542974 | 747 | |
cdc97792 | 748 | mos7840_port = urb->context; |
9c134a14 | 749 | if (!mos7840_port) |
50de36f7 | 750 | return; |
50de36f7 GKH |
751 | |
752 | if (status) { | |
9c134a14 | 753 | dev_dbg(&urb->dev->dev, "nonzero read bulk status received: %d\n", status); |
50de36f7 | 754 | mos7840_port->read_urb_busy = false; |
3f542974 PS |
755 | return; |
756 | } | |
757 | ||
9c134a14 | 758 | port = mos7840_port->port; |
441b62c1 | 759 | if (mos7840_port_paranoia_check(port, __func__)) { |
50de36f7 | 760 | mos7840_port->read_urb_busy = false; |
3f542974 PS |
761 | return; |
762 | } | |
763 | ||
441b62c1 | 764 | serial = mos7840_get_usb_serial(port, __func__); |
3f542974 | 765 | if (!serial) { |
50de36f7 | 766 | mos7840_port->read_urb_busy = false; |
3f542974 PS |
767 | return; |
768 | } | |
769 | ||
3f542974 | 770 | data = urb->transfer_buffer; |
59d33f2f | 771 | usb_serial_debug_data(&port->dev, __func__, urb->actual_length, data); |
3f542974 | 772 | |
3f542974 | 773 | if (urb->actual_length) { |
05c7cd39 | 774 | struct tty_port *tport = &mos7840_port->port->port; |
2e124b4a JS |
775 | tty_insert_flip_string(tport, data, urb->actual_length); |
776 | tty_flip_buffer_push(tport); | |
8c1a07ff JH |
777 | port->icount.rx += urb->actual_length; |
778 | dev_dbg(&port->dev, "icount.rx is %d:\n", port->icount.rx); | |
3f542974 PS |
779 | } |
780 | ||
781 | if (!mos7840_port->read_urb) { | |
9c134a14 | 782 | dev_dbg(&port->dev, "%s", "URB KILLED !!!\n"); |
50de36f7 | 783 | mos7840_port->read_urb_busy = false; |
3f542974 PS |
784 | return; |
785 | } | |
786 | ||
05cf0dec JH |
787 | if (mos7840_port->has_led) |
788 | mos7840_led_activity(port); | |
3f542974 | 789 | |
50de36f7 | 790 | mos7840_port->read_urb_busy = true; |
0643c724 | 791 | retval = usb_submit_urb(mos7840_port->read_urb, GFP_ATOMIC); |
0de9a702 | 792 | |
0643c724 | 793 | if (retval) { |
9c134a14 | 794 | dev_dbg(&port->dev, "usb_submit_urb(read bulk) failed, retval = %d\n", retval); |
50de36f7 | 795 | mos7840_port->read_urb_busy = false; |
3f542974 PS |
796 | } |
797 | } | |
798 | ||
799 | /***************************************************************************** | |
800 | * mos7840_bulk_out_data_callback | |
880af9db AC |
801 | * this is the callback function for when we have finished sending |
802 | * serial data on the bulk out endpoint. | |
3f542974 PS |
803 | *****************************************************************************/ |
804 | ||
7d12e780 | 805 | static void mos7840_bulk_out_data_callback(struct urb *urb) |
3f542974 PS |
806 | { |
807 | struct moschip_port *mos7840_port; | |
9c134a14 | 808 | struct usb_serial_port *port; |
0643c724 | 809 | int status = urb->status; |
0de9a702 ON |
810 | int i; |
811 | ||
cdc97792 | 812 | mos7840_port = urb->context; |
9c134a14 | 813 | port = mos7840_port->port; |
0de9a702 ON |
814 | spin_lock(&mos7840_port->pool_lock); |
815 | for (i = 0; i < NUM_URBS; i++) { | |
816 | if (urb == mos7840_port->write_urb_pool[i]) { | |
817 | mos7840_port->busy[i] = 0; | |
818 | break; | |
819 | } | |
820 | } | |
821 | spin_unlock(&mos7840_port->pool_lock); | |
822 | ||
0643c724 | 823 | if (status) { |
9c134a14 | 824 | dev_dbg(&port->dev, "nonzero write bulk status received:%d\n", status); |
3f542974 PS |
825 | return; |
826 | } | |
827 | ||
9c134a14 | 828 | if (mos7840_port_paranoia_check(port, __func__)) |
3f542974 | 829 | return; |
3f542974 | 830 | |
6aad04f2 JS |
831 | if (mos7840_port->open) |
832 | tty_port_tty_wakeup(&port->port); | |
3f542974 PS |
833 | |
834 | } | |
835 | ||
836 | /************************************************************************/ | |
837 | /* 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 */ | |
838 | /************************************************************************/ | |
3f542974 PS |
839 | |
840 | /***************************************************************************** | |
841 | * mos7840_open | |
842 | * this function is called by the tty driver when a port is opened | |
843 | * If successful, we return 0 | |
844 | * Otherwise we return a negative error number. | |
845 | *****************************************************************************/ | |
846 | ||
a509a7e4 | 847 | static int mos7840_open(struct tty_struct *tty, struct usb_serial_port *port) |
3f542974 PS |
848 | { |
849 | int response; | |
850 | int j; | |
851 | struct usb_serial *serial; | |
852 | struct urb *urb; | |
853 | __u16 Data; | |
854 | int status; | |
855 | struct moschip_port *mos7840_port; | |
0de9a702 | 856 | struct moschip_port *port0; |
3f542974 | 857 | |
9c134a14 | 858 | if (mos7840_port_paranoia_check(port, __func__)) |
3f542974 | 859 | return -ENODEV; |
3f542974 | 860 | |
3f542974 PS |
861 | serial = port->serial; |
862 | ||
9c134a14 | 863 | if (mos7840_serial_paranoia_check(serial, __func__)) |
3f542974 | 864 | return -ENODEV; |
3f542974 PS |
865 | |
866 | mos7840_port = mos7840_get_port_private(port); | |
0de9a702 | 867 | port0 = mos7840_get_port_private(serial->port[0]); |
3f542974 | 868 | |
0de9a702 | 869 | if (mos7840_port == NULL || port0 == NULL) |
3f542974 PS |
870 | return -ENODEV; |
871 | ||
872 | usb_clear_halt(serial->dev, port->write_urb->pipe); | |
873 | usb_clear_halt(serial->dev, port->read_urb->pipe); | |
0de9a702 | 874 | port0->open_ports++; |
3f542974 PS |
875 | |
876 | /* Initialising the write urb pool */ | |
877 | for (j = 0; j < NUM_URBS; ++j) { | |
0de9a702 | 878 | urb = usb_alloc_urb(0, GFP_KERNEL); |
3f542974 PS |
879 | mos7840_port->write_urb_pool[j] = urb; |
880 | ||
881 | if (urb == NULL) { | |
194343d9 | 882 | dev_err(&port->dev, "No more urbs???\n"); |
3f542974 PS |
883 | continue; |
884 | } | |
885 | ||
880af9db AC |
886 | urb->transfer_buffer = kmalloc(URB_TRANSFER_BUFFER_SIZE, |
887 | GFP_KERNEL); | |
3f542974 | 888 | if (!urb->transfer_buffer) { |
0de9a702 ON |
889 | usb_free_urb(urb); |
890 | mos7840_port->write_urb_pool[j] = NULL; | |
194343d9 GKH |
891 | dev_err(&port->dev, |
892 | "%s-out of memory for urb buffers.\n", | |
893 | __func__); | |
3f542974 PS |
894 | continue; |
895 | } | |
896 | } | |
897 | ||
898 | /***************************************************************************** | |
899 | * Initialize MCS7840 -- Write Init values to corresponding Registers | |
900 | * | |
901 | * Register Index | |
902 | * 1 : IER | |
903 | * 2 : FCR | |
904 | * 3 : LCR | |
905 | * 4 : MCR | |
906 | * | |
907 | * 0x08 : SP1/2 Control Reg | |
908 | *****************************************************************************/ | |
909 | ||
880af9db | 910 | /* NEED to check the following Block */ |
3f542974 | 911 | |
3f542974 PS |
912 | Data = 0x0; |
913 | status = mos7840_get_reg_sync(port, mos7840_port->SpRegOffset, &Data); | |
914 | if (status < 0) { | |
9c134a14 | 915 | dev_dbg(&port->dev, "Reading Spreg failed\n"); |
5f8a2e68 | 916 | goto err; |
3f542974 PS |
917 | } |
918 | Data |= 0x80; | |
919 | status = mos7840_set_reg_sync(port, mos7840_port->SpRegOffset, Data); | |
920 | if (status < 0) { | |
9c134a14 | 921 | dev_dbg(&port->dev, "writing Spreg failed\n"); |
5f8a2e68 | 922 | goto err; |
3f542974 PS |
923 | } |
924 | ||
925 | Data &= ~0x80; | |
926 | status = mos7840_set_reg_sync(port, mos7840_port->SpRegOffset, Data); | |
927 | if (status < 0) { | |
9c134a14 | 928 | dev_dbg(&port->dev, "writing Spreg failed\n"); |
5f8a2e68 | 929 | goto err; |
3f542974 | 930 | } |
880af9db | 931 | /* End of block to be checked */ |
3f542974 | 932 | |
3f542974 | 933 | Data = 0x0; |
880af9db AC |
934 | status = mos7840_get_reg_sync(port, mos7840_port->ControlRegOffset, |
935 | &Data); | |
3f542974 | 936 | if (status < 0) { |
9c134a14 | 937 | dev_dbg(&port->dev, "Reading Controlreg failed\n"); |
5f8a2e68 | 938 | goto err; |
3f542974 | 939 | } |
880af9db AC |
940 | Data |= 0x08; /* Driver done bit */ |
941 | Data |= 0x20; /* rx_disable */ | |
942 | status = mos7840_set_reg_sync(port, | |
943 | mos7840_port->ControlRegOffset, Data); | |
3f542974 | 944 | if (status < 0) { |
9c134a14 | 945 | dev_dbg(&port->dev, "writing Controlreg failed\n"); |
5f8a2e68 | 946 | goto err; |
3f542974 | 947 | } |
880af9db AC |
948 | /* do register settings here */ |
949 | /* Set all regs to the device default values. */ | |
950 | /*********************************** | |
951 | * First Disable all interrupts. | |
952 | ***********************************/ | |
3f542974 | 953 | Data = 0x00; |
3f542974 PS |
954 | status = mos7840_set_uart_reg(port, INTERRUPT_ENABLE_REGISTER, Data); |
955 | if (status < 0) { | |
9c134a14 | 956 | dev_dbg(&port->dev, "disabling interrupts failed\n"); |
5f8a2e68 | 957 | goto err; |
3f542974 | 958 | } |
880af9db | 959 | /* Set FIFO_CONTROL_REGISTER to the default value */ |
3f542974 | 960 | Data = 0x00; |
3f542974 PS |
961 | status = mos7840_set_uart_reg(port, FIFO_CONTROL_REGISTER, Data); |
962 | if (status < 0) { | |
9c134a14 | 963 | dev_dbg(&port->dev, "Writing FIFO_CONTROL_REGISTER failed\n"); |
5f8a2e68 | 964 | goto err; |
3f542974 PS |
965 | } |
966 | ||
967 | Data = 0xcf; | |
3f542974 PS |
968 | status = mos7840_set_uart_reg(port, FIFO_CONTROL_REGISTER, Data); |
969 | if (status < 0) { | |
9c134a14 | 970 | dev_dbg(&port->dev, "Writing FIFO_CONTROL_REGISTER failed\n"); |
5f8a2e68 | 971 | goto err; |
3f542974 PS |
972 | } |
973 | ||
974 | Data = 0x03; | |
3f542974 PS |
975 | status = mos7840_set_uart_reg(port, LINE_CONTROL_REGISTER, Data); |
976 | mos7840_port->shadowLCR = Data; | |
977 | ||
978 | Data = 0x0b; | |
3f542974 PS |
979 | status = mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, Data); |
980 | mos7840_port->shadowMCR = Data; | |
981 | ||
982 | Data = 0x00; | |
3f542974 PS |
983 | status = mos7840_get_uart_reg(port, LINE_CONTROL_REGISTER, &Data); |
984 | mos7840_port->shadowLCR = Data; | |
985 | ||
880af9db | 986 | Data |= SERIAL_LCR_DLAB; /* data latch enable in LCR 0x80 */ |
3f542974 PS |
987 | status = mos7840_set_uart_reg(port, LINE_CONTROL_REGISTER, Data); |
988 | ||
989 | Data = 0x0c; | |
3f542974 PS |
990 | status = mos7840_set_uart_reg(port, DIVISOR_LATCH_LSB, Data); |
991 | ||
992 | Data = 0x0; | |
3f542974 PS |
993 | status = mos7840_set_uart_reg(port, DIVISOR_LATCH_MSB, Data); |
994 | ||
995 | Data = 0x00; | |
3f542974 PS |
996 | status = mos7840_get_uart_reg(port, LINE_CONTROL_REGISTER, &Data); |
997 | ||
998 | Data = Data & ~SERIAL_LCR_DLAB; | |
3f542974 PS |
999 | status = mos7840_set_uart_reg(port, LINE_CONTROL_REGISTER, Data); |
1000 | mos7840_port->shadowLCR = Data; | |
1001 | ||
880af9db | 1002 | /* clearing Bulkin and Bulkout Fifo */ |
3f542974 | 1003 | Data = 0x0; |
3f542974 PS |
1004 | status = mos7840_get_reg_sync(port, mos7840_port->SpRegOffset, &Data); |
1005 | ||
1006 | Data = Data | 0x0c; | |
3f542974 PS |
1007 | status = mos7840_set_reg_sync(port, mos7840_port->SpRegOffset, Data); |
1008 | ||
1009 | Data = Data & ~0x0c; | |
3f542974 | 1010 | status = mos7840_set_reg_sync(port, mos7840_port->SpRegOffset, Data); |
880af9db | 1011 | /* Finally enable all interrupts */ |
3f542974 | 1012 | Data = 0x0c; |
3f542974 PS |
1013 | status = mos7840_set_uart_reg(port, INTERRUPT_ENABLE_REGISTER, Data); |
1014 | ||
880af9db | 1015 | /* clearing rx_disable */ |
3f542974 | 1016 | Data = 0x0; |
880af9db AC |
1017 | status = mos7840_get_reg_sync(port, mos7840_port->ControlRegOffset, |
1018 | &Data); | |
3f542974 | 1019 | Data = Data & ~0x20; |
880af9db AC |
1020 | status = mos7840_set_reg_sync(port, mos7840_port->ControlRegOffset, |
1021 | Data); | |
3f542974 | 1022 | |
880af9db | 1023 | /* rx_negate */ |
3f542974 | 1024 | Data = 0x0; |
880af9db AC |
1025 | status = mos7840_get_reg_sync(port, mos7840_port->ControlRegOffset, |
1026 | &Data); | |
3f542974 | 1027 | Data = Data | 0x10; |
880af9db AC |
1028 | status = mos7840_set_reg_sync(port, mos7840_port->ControlRegOffset, |
1029 | Data); | |
3f542974 | 1030 | |
880af9db AC |
1031 | /* Check to see if we've set up our endpoint info yet * |
1032 | * (can't set it up in mos7840_startup as the structures * | |
1033 | * were not set up at that time.) */ | |
0de9a702 | 1034 | if (port0->open_ports == 1) { |
3f542974 | 1035 | if (serial->port[0]->interrupt_in_buffer == NULL) { |
3f542974 | 1036 | /* set up interrupt urb */ |
3f542974 | 1037 | usb_fill_int_urb(serial->port[0]->interrupt_in_urb, |
880af9db AC |
1038 | serial->dev, |
1039 | usb_rcvintpipe(serial->dev, | |
1040 | serial->port[0]->interrupt_in_endpointAddress), | |
1041 | serial->port[0]->interrupt_in_buffer, | |
1042 | serial->port[0]->interrupt_in_urb-> | |
1043 | transfer_buffer_length, | |
1044 | mos7840_interrupt_callback, | |
1045 | serial, | |
1046 | serial->port[0]->interrupt_in_urb->interval); | |
3f542974 PS |
1047 | |
1048 | /* start interrupt read for mos7840 * | |
1049 | * will continue as long as mos7840 is connected */ | |
1050 | ||
1051 | response = | |
1052 | usb_submit_urb(serial->port[0]->interrupt_in_urb, | |
1053 | GFP_KERNEL); | |
1054 | if (response) { | |
194343d9 GKH |
1055 | dev_err(&port->dev, "%s - Error %d submitting " |
1056 | "interrupt urb\n", __func__, response); | |
3f542974 PS |
1057 | } |
1058 | ||
1059 | } | |
1060 | ||
1061 | } | |
1062 | ||
1063 | /* see if we've set up our endpoint info yet * | |
1064 | * (can't set it up in mos7840_startup as the * | |
1065 | * structures were not set up at that time.) */ | |
1066 | ||
1143832e | 1067 | dev_dbg(&port->dev, "port number is %d\n", port->port_number); |
e5b1e206 | 1068 | dev_dbg(&port->dev, "minor number is %d\n", port->minor); |
9c134a14 GKH |
1069 | dev_dbg(&port->dev, "Bulkin endpoint is %d\n", port->bulk_in_endpointAddress); |
1070 | dev_dbg(&port->dev, "BulkOut endpoint is %d\n", port->bulk_out_endpointAddress); | |
1071 | dev_dbg(&port->dev, "Interrupt endpoint is %d\n", port->interrupt_in_endpointAddress); | |
1072 | dev_dbg(&port->dev, "port's number in the device is %d\n", mos7840_port->port_num); | |
3f542974 PS |
1073 | mos7840_port->read_urb = port->read_urb; |
1074 | ||
1075 | /* set up our bulk in urb */ | |
1143832e | 1076 | if ((serial->num_ports == 2) && (((__u16)port->port_number % 2) != 0)) { |
093ea2d3 DL |
1077 | usb_fill_bulk_urb(mos7840_port->read_urb, |
1078 | serial->dev, | |
1079 | usb_rcvbulkpipe(serial->dev, | |
1080 | (port->bulk_in_endpointAddress) + 2), | |
1081 | port->bulk_in_buffer, | |
1082 | mos7840_port->read_urb->transfer_buffer_length, | |
1083 | mos7840_bulk_in_callback, mos7840_port); | |
1084 | } else { | |
1085 | usb_fill_bulk_urb(mos7840_port->read_urb, | |
1086 | serial->dev, | |
1087 | usb_rcvbulkpipe(serial->dev, | |
1088 | port->bulk_in_endpointAddress), | |
1089 | port->bulk_in_buffer, | |
1090 | mos7840_port->read_urb->transfer_buffer_length, | |
1091 | mos7840_bulk_in_callback, mos7840_port); | |
1092 | } | |
3f542974 | 1093 | |
9c134a14 | 1094 | dev_dbg(&port->dev, "%s: bulkin endpoint is %d\n", __func__, port->bulk_in_endpointAddress); |
50de36f7 | 1095 | mos7840_port->read_urb_busy = true; |
3f542974 PS |
1096 | response = usb_submit_urb(mos7840_port->read_urb, GFP_KERNEL); |
1097 | if (response) { | |
194343d9 GKH |
1098 | dev_err(&port->dev, "%s - Error %d submitting control urb\n", |
1099 | __func__, response); | |
50de36f7 | 1100 | mos7840_port->read_urb_busy = false; |
3f542974 PS |
1101 | } |
1102 | ||
1103 | /* initialize our wait queues */ | |
1104 | init_waitqueue_head(&mos7840_port->wait_chase); | |
3f542974 | 1105 | |
3f542974 | 1106 | /* initialize our port settings */ |
880af9db AC |
1107 | /* Must set to enable ints! */ |
1108 | mos7840_port->shadowMCR = MCR_MASTER_IE; | |
3f542974 PS |
1109 | /* send a open port command */ |
1110 | mos7840_port->open = 1; | |
880af9db | 1111 | /* mos7840_change_port_settings(mos7840_port,old_termios); */ |
3f542974 | 1112 | |
3f542974 | 1113 | return 0; |
5f8a2e68 JH |
1114 | err: |
1115 | for (j = 0; j < NUM_URBS; ++j) { | |
1116 | urb = mos7840_port->write_urb_pool[j]; | |
1117 | if (!urb) | |
1118 | continue; | |
1119 | kfree(urb->transfer_buffer); | |
1120 | usb_free_urb(urb); | |
1121 | } | |
1122 | return status; | |
3f542974 PS |
1123 | } |
1124 | ||
1125 | /***************************************************************************** | |
1126 | * mos7840_chars_in_buffer | |
1127 | * this function is called by the tty driver when it wants to know how many | |
1128 | * bytes of data we currently have outstanding in the port (data that has | |
1129 | * been written, but hasn't made it out the port yet) | |
1130 | * If successful, we return the number of bytes left to be written in the | |
1131 | * system, | |
95da310e | 1132 | * Otherwise we return zero. |
3f542974 PS |
1133 | *****************************************************************************/ |
1134 | ||
95da310e | 1135 | static int mos7840_chars_in_buffer(struct tty_struct *tty) |
3f542974 | 1136 | { |
95da310e | 1137 | struct usb_serial_port *port = tty->driver_data; |
3f542974 PS |
1138 | int i; |
1139 | int chars = 0; | |
0de9a702 | 1140 | unsigned long flags; |
3f542974 PS |
1141 | struct moschip_port *mos7840_port; |
1142 | ||
9c134a14 | 1143 | if (mos7840_port_paranoia_check(port, __func__)) |
95da310e | 1144 | return 0; |
3f542974 PS |
1145 | |
1146 | mos7840_port = mos7840_get_port_private(port); | |
3363155b | 1147 | if (mos7840_port == NULL) |
95da310e | 1148 | return 0; |
3f542974 | 1149 | |
880af9db | 1150 | spin_lock_irqsave(&mos7840_port->pool_lock, flags); |
5c263b92 MF |
1151 | for (i = 0; i < NUM_URBS; ++i) { |
1152 | if (mos7840_port->busy[i]) { | |
1153 | struct urb *urb = mos7840_port->write_urb_pool[i]; | |
1154 | chars += urb->transfer_buffer_length; | |
1155 | } | |
1156 | } | |
880af9db | 1157 | spin_unlock_irqrestore(&mos7840_port->pool_lock, flags); |
9c134a14 | 1158 | dev_dbg(&port->dev, "%s - returns %d\n", __func__, chars); |
0de9a702 | 1159 | return chars; |
3f542974 PS |
1160 | |
1161 | } | |
1162 | ||
3f542974 PS |
1163 | /***************************************************************************** |
1164 | * mos7840_close | |
1165 | * this function is called by the tty driver when a port is closed | |
1166 | *****************************************************************************/ | |
1167 | ||
335f8514 | 1168 | static void mos7840_close(struct usb_serial_port *port) |
3f542974 PS |
1169 | { |
1170 | struct usb_serial *serial; | |
1171 | struct moschip_port *mos7840_port; | |
0de9a702 | 1172 | struct moschip_port *port0; |
3f542974 PS |
1173 | int j; |
1174 | __u16 Data; | |
1175 | ||
9c134a14 | 1176 | if (mos7840_port_paranoia_check(port, __func__)) |
3f542974 | 1177 | return; |
3f542974 | 1178 | |
441b62c1 | 1179 | serial = mos7840_get_usb_serial(port, __func__); |
9c134a14 | 1180 | if (!serial) |
3f542974 | 1181 | return; |
3f542974 PS |
1182 | |
1183 | mos7840_port = mos7840_get_port_private(port); | |
0de9a702 | 1184 | port0 = mos7840_get_port_private(serial->port[0]); |
3f542974 | 1185 | |
0de9a702 | 1186 | if (mos7840_port == NULL || port0 == NULL) |
3f542974 | 1187 | return; |
3f542974 PS |
1188 | |
1189 | for (j = 0; j < NUM_URBS; ++j) | |
1190 | usb_kill_urb(mos7840_port->write_urb_pool[j]); | |
1191 | ||
1192 | /* Freeing Write URBs */ | |
1193 | for (j = 0; j < NUM_URBS; ++j) { | |
1194 | if (mos7840_port->write_urb_pool[j]) { | |
1195 | if (mos7840_port->write_urb_pool[j]->transfer_buffer) | |
1196 | kfree(mos7840_port->write_urb_pool[j]-> | |
1197 | transfer_buffer); | |
1198 | ||
1199 | usb_free_urb(mos7840_port->write_urb_pool[j]); | |
1200 | } | |
1201 | } | |
1202 | ||
bb3529c6 JH |
1203 | usb_kill_urb(mos7840_port->write_urb); |
1204 | usb_kill_urb(mos7840_port->read_urb); | |
1205 | mos7840_port->read_urb_busy = false; | |
1206 | ||
0de9a702 | 1207 | port0->open_ports--; |
1143832e | 1208 | dev_dbg(&port->dev, "%s in close%d\n", __func__, port0->open_ports); |
0de9a702 | 1209 | if (port0->open_ports == 0) { |
3f542974 | 1210 | if (serial->port[0]->interrupt_in_urb) { |
9c134a14 | 1211 | dev_dbg(&port->dev, "Shutdown interrupt_in_urb\n"); |
0de9a702 | 1212 | usb_kill_urb(serial->port[0]->interrupt_in_urb); |
3f542974 PS |
1213 | } |
1214 | } | |
1215 | ||
1216 | if (mos7840_port->write_urb) { | |
1217 | /* if this urb had a transfer buffer already (old tx) free it */ | |
ae8d4879 | 1218 | kfree(mos7840_port->write_urb->transfer_buffer); |
3f542974 PS |
1219 | usb_free_urb(mos7840_port->write_urb); |
1220 | } | |
1221 | ||
1222 | Data = 0x0; | |
1223 | mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, Data); | |
1224 | ||
1225 | Data = 0x00; | |
1226 | mos7840_set_uart_reg(port, INTERRUPT_ENABLE_REGISTER, Data); | |
1227 | ||
1228 | mos7840_port->open = 0; | |
3f542974 PS |
1229 | } |
1230 | ||
1231 | /************************************************************************ | |
1232 | * | |
1233 | * mos7840_block_until_chase_response | |
1234 | * | |
1235 | * This function will block the close until one of the following: | |
1236 | * 1. Response to our Chase comes from mos7840 | |
dc0d5c1e | 1237 | * 2. A timeout of 10 seconds without activity has expired |
3f542974 PS |
1238 | * (1K of mos7840 data @ 2400 baud ==> 4 sec to empty) |
1239 | * | |
1240 | ************************************************************************/ | |
1241 | ||
95da310e AC |
1242 | static void mos7840_block_until_chase_response(struct tty_struct *tty, |
1243 | struct moschip_port *mos7840_port) | |
3f542974 | 1244 | { |
1e658489 | 1245 | int timeout = msecs_to_jiffies(1000); |
3f542974 PS |
1246 | int wait = 10; |
1247 | int count; | |
1248 | ||
1249 | while (1) { | |
95da310e | 1250 | count = mos7840_chars_in_buffer(tty); |
3f542974 PS |
1251 | |
1252 | /* Check for Buffer status */ | |
880af9db | 1253 | if (count <= 0) |
3f542974 | 1254 | return; |
3f542974 PS |
1255 | |
1256 | /* Block the thread for a while */ | |
1257 | interruptible_sleep_on_timeout(&mos7840_port->wait_chase, | |
1258 | timeout); | |
1259 | /* No activity.. count down section */ | |
1260 | wait--; | |
1261 | if (wait == 0) { | |
9c134a14 | 1262 | dev_dbg(&mos7840_port->port->dev, "%s - TIMEOUT\n", __func__); |
3f542974 PS |
1263 | return; |
1264 | } else { | |
dc0d5c1e | 1265 | /* Reset timeout value back to seconds */ |
3f542974 PS |
1266 | wait = 10; |
1267 | } | |
1268 | } | |
1269 | ||
1270 | } | |
1271 | ||
1272 | /***************************************************************************** | |
1273 | * mos7840_break | |
1274 | * this function sends a break to the port | |
1275 | *****************************************************************************/ | |
95da310e | 1276 | static void mos7840_break(struct tty_struct *tty, int break_state) |
3f542974 | 1277 | { |
95da310e | 1278 | struct usb_serial_port *port = tty->driver_data; |
3f542974 PS |
1279 | unsigned char data; |
1280 | struct usb_serial *serial; | |
1281 | struct moschip_port *mos7840_port; | |
1282 | ||
9c134a14 | 1283 | if (mos7840_port_paranoia_check(port, __func__)) |
3f542974 | 1284 | return; |
3f542974 | 1285 | |
441b62c1 | 1286 | serial = mos7840_get_usb_serial(port, __func__); |
9c134a14 | 1287 | if (!serial) |
3f542974 | 1288 | return; |
3f542974 PS |
1289 | |
1290 | mos7840_port = mos7840_get_port_private(port); | |
1291 | ||
880af9db | 1292 | if (mos7840_port == NULL) |
3f542974 | 1293 | return; |
3f542974 | 1294 | |
bb3529c6 JH |
1295 | /* flush and block until tx is empty */ |
1296 | mos7840_block_until_chase_response(tty, mos7840_port); | |
3f542974 | 1297 | |
95da310e | 1298 | if (break_state == -1) |
3f542974 | 1299 | data = mos7840_port->shadowLCR | LCR_SET_BREAK; |
95da310e | 1300 | else |
3f542974 | 1301 | data = mos7840_port->shadowLCR & ~LCR_SET_BREAK; |
3f542974 | 1302 | |
6b447f04 | 1303 | /* FIXME: no locking on shadowLCR anywhere in driver */ |
3f542974 | 1304 | mos7840_port->shadowLCR = data; |
9c134a14 | 1305 | dev_dbg(&port->dev, "%s mos7840_port->shadowLCR is %x\n", __func__, mos7840_port->shadowLCR); |
3f542974 PS |
1306 | mos7840_set_uart_reg(port, LINE_CONTROL_REGISTER, |
1307 | mos7840_port->shadowLCR); | |
3f542974 PS |
1308 | } |
1309 | ||
1310 | /***************************************************************************** | |
1311 | * mos7840_write_room | |
1312 | * this function is called by the tty driver when it wants to know how many | |
1313 | * bytes of data we can accept for a specific port. | |
1314 | * If successful, we return the amount of room that we have for this port | |
1315 | * Otherwise we return a negative error number. | |
1316 | *****************************************************************************/ | |
1317 | ||
95da310e | 1318 | static int mos7840_write_room(struct tty_struct *tty) |
3f542974 | 1319 | { |
95da310e | 1320 | struct usb_serial_port *port = tty->driver_data; |
3f542974 PS |
1321 | int i; |
1322 | int room = 0; | |
0de9a702 | 1323 | unsigned long flags; |
3f542974 PS |
1324 | struct moschip_port *mos7840_port; |
1325 | ||
9c134a14 | 1326 | if (mos7840_port_paranoia_check(port, __func__)) |
3f542974 | 1327 | return -1; |
3f542974 PS |
1328 | |
1329 | mos7840_port = mos7840_get_port_private(port); | |
9c134a14 | 1330 | if (mos7840_port == NULL) |
3f542974 | 1331 | return -1; |
3f542974 | 1332 | |
0de9a702 | 1333 | spin_lock_irqsave(&mos7840_port->pool_lock, flags); |
3f542974 | 1334 | for (i = 0; i < NUM_URBS; ++i) { |
880af9db | 1335 | if (!mos7840_port->busy[i]) |
3f542974 | 1336 | room += URB_TRANSFER_BUFFER_SIZE; |
3f542974 | 1337 | } |
0de9a702 | 1338 | spin_unlock_irqrestore(&mos7840_port->pool_lock, flags); |
3f542974 | 1339 | |
0de9a702 | 1340 | room = (room == 0) ? 0 : room - URB_TRANSFER_BUFFER_SIZE + 1; |
9c134a14 | 1341 | dev_dbg(&mos7840_port->port->dev, "%s - returns %d\n", __func__, room); |
0de9a702 | 1342 | return room; |
3f542974 PS |
1343 | |
1344 | } | |
1345 | ||
1346 | /***************************************************************************** | |
1347 | * mos7840_write | |
1348 | * this function is called by the tty driver when data should be written to | |
1349 | * the port. | |
1350 | * If successful, we return the number of bytes written, otherwise we | |
1351 | * return a negative error number. | |
1352 | *****************************************************************************/ | |
1353 | ||
95da310e | 1354 | static int mos7840_write(struct tty_struct *tty, struct usb_serial_port *port, |
3f542974 PS |
1355 | const unsigned char *data, int count) |
1356 | { | |
1357 | int status; | |
1358 | int i; | |
1359 | int bytes_sent = 0; | |
1360 | int transfer_size; | |
0de9a702 | 1361 | unsigned long flags; |
3f542974 PS |
1362 | |
1363 | struct moschip_port *mos7840_port; | |
1364 | struct usb_serial *serial; | |
1365 | struct urb *urb; | |
880af9db | 1366 | /* __u16 Data; */ |
3f542974 PS |
1367 | const unsigned char *current_position = data; |
1368 | unsigned char *data1; | |
3f542974 PS |
1369 | |
1370 | #ifdef NOTMOS7840 | |
1371 | Data = 0x00; | |
3f542974 PS |
1372 | status = mos7840_get_uart_reg(port, LINE_CONTROL_REGISTER, &Data); |
1373 | mos7840_port->shadowLCR = Data; | |
9c134a14 GKH |
1374 | dev_dbg(&port->dev, "%s: LINE_CONTROL_REGISTER is %x\n", __func__, Data); |
1375 | dev_dbg(&port->dev, "%s: mos7840_port->shadowLCR is %x\n", __func__, mos7840_port->shadowLCR); | |
3f542974 | 1376 | |
880af9db AC |
1377 | /* Data = 0x03; */ |
1378 | /* status = mos7840_set_uart_reg(port,LINE_CONTROL_REGISTER,Data); */ | |
1379 | /* mos7840_port->shadowLCR=Data;//Need to add later */ | |
3f542974 | 1380 | |
880af9db | 1381 | Data |= SERIAL_LCR_DLAB; /* data latch enable in LCR 0x80 */ |
3f542974 PS |
1382 | status = mos7840_set_uart_reg(port, LINE_CONTROL_REGISTER, Data); |
1383 | ||
880af9db AC |
1384 | /* Data = 0x0c; */ |
1385 | /* status = mos7840_set_uart_reg(port,DIVISOR_LATCH_LSB,Data); */ | |
3f542974 | 1386 | Data = 0x00; |
3f542974 | 1387 | status = mos7840_get_uart_reg(port, DIVISOR_LATCH_LSB, &Data); |
9c134a14 | 1388 | dev_dbg(&port->dev, "%s: DLL value is %x\n", __func__, Data); |
3f542974 PS |
1389 | |
1390 | Data = 0x0; | |
3f542974 | 1391 | status = mos7840_get_uart_reg(port, DIVISOR_LATCH_MSB, &Data); |
9c134a14 | 1392 | dev_dbg(&port->dev, "%s: DLM value is %x\n", __func__, Data); |
3f542974 PS |
1393 | |
1394 | Data = Data & ~SERIAL_LCR_DLAB; | |
9c134a14 | 1395 | dev_dbg(&port->dev, "%s: mos7840_port->shadowLCR is %x\n", __func__, mos7840_port->shadowLCR); |
3f542974 PS |
1396 | status = mos7840_set_uart_reg(port, LINE_CONTROL_REGISTER, Data); |
1397 | #endif | |
1398 | ||
9c134a14 | 1399 | if (mos7840_port_paranoia_check(port, __func__)) |
3f542974 | 1400 | return -1; |
3f542974 PS |
1401 | |
1402 | serial = port->serial; | |
9c134a14 | 1403 | if (mos7840_serial_paranoia_check(serial, __func__)) |
3f542974 | 1404 | return -1; |
3f542974 PS |
1405 | |
1406 | mos7840_port = mos7840_get_port_private(port); | |
9c134a14 | 1407 | if (mos7840_port == NULL) |
3f542974 | 1408 | return -1; |
3f542974 PS |
1409 | |
1410 | /* try to find a free urb in the list */ | |
1411 | urb = NULL; | |
1412 | ||
0de9a702 | 1413 | spin_lock_irqsave(&mos7840_port->pool_lock, flags); |
3f542974 | 1414 | for (i = 0; i < NUM_URBS; ++i) { |
0de9a702 ON |
1415 | if (!mos7840_port->busy[i]) { |
1416 | mos7840_port->busy[i] = 1; | |
3f542974 | 1417 | urb = mos7840_port->write_urb_pool[i]; |
9c134a14 | 1418 | dev_dbg(&port->dev, "URB:%d\n", i); |
3f542974 PS |
1419 | break; |
1420 | } | |
1421 | } | |
0de9a702 | 1422 | spin_unlock_irqrestore(&mos7840_port->pool_lock, flags); |
3f542974 PS |
1423 | |
1424 | if (urb == NULL) { | |
9c134a14 | 1425 | dev_dbg(&port->dev, "%s - no more free urbs\n", __func__); |
3f542974 PS |
1426 | goto exit; |
1427 | } | |
1428 | ||
1429 | if (urb->transfer_buffer == NULL) { | |
1430 | urb->transfer_buffer = | |
1431 | kmalloc(URB_TRANSFER_BUFFER_SIZE, GFP_KERNEL); | |
1432 | ||
1433 | if (urb->transfer_buffer == NULL) { | |
22a416c4 | 1434 | dev_err_console(port, "%s no more kernel memory...\n", |
194343d9 | 1435 | __func__); |
3f542974 PS |
1436 | goto exit; |
1437 | } | |
1438 | } | |
1439 | transfer_size = min(count, URB_TRANSFER_BUFFER_SIZE); | |
1440 | ||
97c4965d | 1441 | memcpy(urb->transfer_buffer, current_position, transfer_size); |
3f542974 PS |
1442 | |
1443 | /* fill urb with data and submit */ | |
1143832e | 1444 | if ((serial->num_ports == 2) && (((__u16)port->port_number % 2) != 0)) { |
093ea2d3 DL |
1445 | usb_fill_bulk_urb(urb, |
1446 | serial->dev, | |
1447 | usb_sndbulkpipe(serial->dev, | |
1448 | (port->bulk_out_endpointAddress) + 2), | |
1449 | urb->transfer_buffer, | |
1450 | transfer_size, | |
1451 | mos7840_bulk_out_data_callback, mos7840_port); | |
1452 | } else { | |
1453 | usb_fill_bulk_urb(urb, | |
1454 | serial->dev, | |
1455 | usb_sndbulkpipe(serial->dev, | |
1456 | port->bulk_out_endpointAddress), | |
1457 | urb->transfer_buffer, | |
1458 | transfer_size, | |
1459 | mos7840_bulk_out_data_callback, mos7840_port); | |
1460 | } | |
3f542974 PS |
1461 | |
1462 | data1 = urb->transfer_buffer; | |
9c134a14 | 1463 | dev_dbg(&port->dev, "bulkout endpoint is %d\n", port->bulk_out_endpointAddress); |
3f542974 | 1464 | |
05cf0dec JH |
1465 | if (mos7840_port->has_led) |
1466 | mos7840_led_activity(port); | |
0eafe4de | 1467 | |
3f542974 PS |
1468 | /* send it down the pipe */ |
1469 | status = usb_submit_urb(urb, GFP_ATOMIC); | |
1470 | ||
1471 | if (status) { | |
0de9a702 | 1472 | mos7840_port->busy[i] = 0; |
22a416c4 | 1473 | dev_err_console(port, "%s - usb_submit_urb(write bulk) failed " |
194343d9 | 1474 | "with status = %d\n", __func__, status); |
3f542974 PS |
1475 | bytes_sent = status; |
1476 | goto exit; | |
1477 | } | |
1478 | bytes_sent = transfer_size; | |
8c1a07ff JH |
1479 | port->icount.tx += transfer_size; |
1480 | dev_dbg(&port->dev, "icount.tx is %d:\n", port->icount.tx); | |
95da310e | 1481 | exit: |
3f542974 PS |
1482 | return bytes_sent; |
1483 | ||
1484 | } | |
1485 | ||
1486 | /***************************************************************************** | |
1487 | * mos7840_throttle | |
1488 | * this function is called by the tty driver when it wants to stop the data | |
1489 | * being read from the port. | |
1490 | *****************************************************************************/ | |
1491 | ||
95da310e | 1492 | static void mos7840_throttle(struct tty_struct *tty) |
3f542974 | 1493 | { |
95da310e | 1494 | struct usb_serial_port *port = tty->driver_data; |
3f542974 | 1495 | struct moschip_port *mos7840_port; |
3f542974 PS |
1496 | int status; |
1497 | ||
9c134a14 | 1498 | if (mos7840_port_paranoia_check(port, __func__)) |
3f542974 | 1499 | return; |
3f542974 PS |
1500 | |
1501 | mos7840_port = mos7840_get_port_private(port); | |
1502 | ||
1503 | if (mos7840_port == NULL) | |
1504 | return; | |
1505 | ||
1506 | if (!mos7840_port->open) { | |
9c134a14 | 1507 | dev_dbg(&port->dev, "%s", "port not opened\n"); |
3f542974 PS |
1508 | return; |
1509 | } | |
1510 | ||
3f542974 PS |
1511 | /* if we are implementing XON/XOFF, send the stop character */ |
1512 | if (I_IXOFF(tty)) { | |
1513 | unsigned char stop_char = STOP_CHAR(tty); | |
95da310e AC |
1514 | status = mos7840_write(tty, port, &stop_char, 1); |
1515 | if (status <= 0) | |
3f542974 | 1516 | return; |
3f542974 | 1517 | } |
3f542974 | 1518 | /* if we are implementing RTS/CTS, toggle that line */ |
adc8d746 | 1519 | if (tty->termios.c_cflag & CRTSCTS) { |
3f542974 | 1520 | mos7840_port->shadowMCR &= ~MCR_RTS; |
95da310e | 1521 | status = mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, |
3f542974 | 1522 | mos7840_port->shadowMCR); |
95da310e | 1523 | if (status < 0) |
3f542974 | 1524 | return; |
3f542974 | 1525 | } |
3f542974 PS |
1526 | } |
1527 | ||
1528 | /***************************************************************************** | |
1529 | * mos7840_unthrottle | |
880af9db AC |
1530 | * this function is called by the tty driver when it wants to resume |
1531 | * the data being read from the port (called after mos7840_throttle is | |
1532 | * called) | |
3f542974 | 1533 | *****************************************************************************/ |
95da310e | 1534 | static void mos7840_unthrottle(struct tty_struct *tty) |
3f542974 | 1535 | { |
95da310e | 1536 | struct usb_serial_port *port = tty->driver_data; |
3f542974 PS |
1537 | int status; |
1538 | struct moschip_port *mos7840_port = mos7840_get_port_private(port); | |
1539 | ||
9c134a14 | 1540 | if (mos7840_port_paranoia_check(port, __func__)) |
3f542974 | 1541 | return; |
3f542974 PS |
1542 | |
1543 | if (mos7840_port == NULL) | |
1544 | return; | |
1545 | ||
1546 | if (!mos7840_port->open) { | |
9c134a14 | 1547 | dev_dbg(&port->dev, "%s - port not opened\n", __func__); |
3f542974 PS |
1548 | return; |
1549 | } | |
1550 | ||
3f542974 PS |
1551 | /* if we are implementing XON/XOFF, send the start character */ |
1552 | if (I_IXOFF(tty)) { | |
1553 | unsigned char start_char = START_CHAR(tty); | |
95da310e AC |
1554 | status = mos7840_write(tty, port, &start_char, 1); |
1555 | if (status <= 0) | |
3f542974 | 1556 | return; |
3f542974 PS |
1557 | } |
1558 | ||
1559 | /* if we are implementing RTS/CTS, toggle that line */ | |
adc8d746 | 1560 | if (tty->termios.c_cflag & CRTSCTS) { |
3f542974 | 1561 | mos7840_port->shadowMCR |= MCR_RTS; |
95da310e | 1562 | status = mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, |
3f542974 | 1563 | mos7840_port->shadowMCR); |
95da310e | 1564 | if (status < 0) |
3f542974 | 1565 | return; |
3f542974 | 1566 | } |
3f542974 PS |
1567 | } |
1568 | ||
60b33c13 | 1569 | static int mos7840_tiocmget(struct tty_struct *tty) |
3f542974 | 1570 | { |
95da310e | 1571 | struct usb_serial_port *port = tty->driver_data; |
3f542974 PS |
1572 | struct moschip_port *mos7840_port; |
1573 | unsigned int result; | |
1574 | __u16 msr; | |
1575 | __u16 mcr; | |
880af9db | 1576 | int status; |
3f542974 PS |
1577 | mos7840_port = mos7840_get_port_private(port); |
1578 | ||
3f542974 PS |
1579 | if (mos7840_port == NULL) |
1580 | return -ENODEV; | |
1581 | ||
1582 | status = mos7840_get_uart_reg(port, MODEM_STATUS_REGISTER, &msr); | |
1583 | status = mos7840_get_uart_reg(port, MODEM_CONTROL_REGISTER, &mcr); | |
1584 | result = ((mcr & MCR_DTR) ? TIOCM_DTR : 0) | |
1585 | | ((mcr & MCR_RTS) ? TIOCM_RTS : 0) | |
1586 | | ((mcr & MCR_LOOPBACK) ? TIOCM_LOOP : 0) | |
1587 | | ((msr & MOS7840_MSR_CTS) ? TIOCM_CTS : 0) | |
1588 | | ((msr & MOS7840_MSR_CD) ? TIOCM_CAR : 0) | |
1589 | | ((msr & MOS7840_MSR_RI) ? TIOCM_RI : 0) | |
1590 | | ((msr & MOS7840_MSR_DSR) ? TIOCM_DSR : 0); | |
1591 | ||
9c134a14 | 1592 | dev_dbg(&port->dev, "%s - 0x%04X\n", __func__, result); |
3f542974 PS |
1593 | |
1594 | return result; | |
1595 | } | |
1596 | ||
20b9d177 | 1597 | static int mos7840_tiocmset(struct tty_struct *tty, |
3f542974 PS |
1598 | unsigned int set, unsigned int clear) |
1599 | { | |
95da310e | 1600 | struct usb_serial_port *port = tty->driver_data; |
3f542974 PS |
1601 | struct moschip_port *mos7840_port; |
1602 | unsigned int mcr; | |
87521c46 | 1603 | int status; |
3f542974 | 1604 | |
3f542974 PS |
1605 | mos7840_port = mos7840_get_port_private(port); |
1606 | ||
1607 | if (mos7840_port == NULL) | |
1608 | return -ENODEV; | |
1609 | ||
e2984494 | 1610 | /* FIXME: What locks the port registers ? */ |
3f542974 PS |
1611 | mcr = mos7840_port->shadowMCR; |
1612 | if (clear & TIOCM_RTS) | |
1613 | mcr &= ~MCR_RTS; | |
1614 | if (clear & TIOCM_DTR) | |
1615 | mcr &= ~MCR_DTR; | |
1616 | if (clear & TIOCM_LOOP) | |
1617 | mcr &= ~MCR_LOOPBACK; | |
1618 | ||
1619 | if (set & TIOCM_RTS) | |
1620 | mcr |= MCR_RTS; | |
1621 | if (set & TIOCM_DTR) | |
1622 | mcr |= MCR_DTR; | |
1623 | if (set & TIOCM_LOOP) | |
1624 | mcr |= MCR_LOOPBACK; | |
1625 | ||
1626 | mos7840_port->shadowMCR = mcr; | |
1627 | ||
3f542974 PS |
1628 | status = mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, mcr); |
1629 | if (status < 0) { | |
9c134a14 | 1630 | dev_dbg(&port->dev, "setting MODEM_CONTROL_REGISTER Failed\n"); |
87521c46 | 1631 | return status; |
3f542974 PS |
1632 | } |
1633 | ||
1634 | return 0; | |
1635 | } | |
1636 | ||
1637 | /***************************************************************************** | |
1638 | * mos7840_calc_baud_rate_divisor | |
1639 | * this function calculates the proper baud rate divisor for the specified | |
1640 | * baud rate. | |
1641 | *****************************************************************************/ | |
9c134a14 GKH |
1642 | static int mos7840_calc_baud_rate_divisor(struct usb_serial_port *port, |
1643 | int baudRate, int *divisor, | |
880af9db | 1644 | __u16 *clk_sel_val) |
3f542974 | 1645 | { |
9c134a14 | 1646 | dev_dbg(&port->dev, "%s - %d\n", __func__, baudRate); |
3f542974 PS |
1647 | |
1648 | if (baudRate <= 115200) { | |
1649 | *divisor = 115200 / baudRate; | |
1650 | *clk_sel_val = 0x0; | |
1651 | } | |
1652 | if ((baudRate > 115200) && (baudRate <= 230400)) { | |
1653 | *divisor = 230400 / baudRate; | |
1654 | *clk_sel_val = 0x10; | |
1655 | } else if ((baudRate > 230400) && (baudRate <= 403200)) { | |
1656 | *divisor = 403200 / baudRate; | |
1657 | *clk_sel_val = 0x20; | |
1658 | } else if ((baudRate > 403200) && (baudRate <= 460800)) { | |
1659 | *divisor = 460800 / baudRate; | |
1660 | *clk_sel_val = 0x30; | |
1661 | } else if ((baudRate > 460800) && (baudRate <= 806400)) { | |
1662 | *divisor = 806400 / baudRate; | |
1663 | *clk_sel_val = 0x40; | |
1664 | } else if ((baudRate > 806400) && (baudRate <= 921600)) { | |
1665 | *divisor = 921600 / baudRate; | |
1666 | *clk_sel_val = 0x50; | |
1667 | } else if ((baudRate > 921600) && (baudRate <= 1572864)) { | |
1668 | *divisor = 1572864 / baudRate; | |
1669 | *clk_sel_val = 0x60; | |
1670 | } else if ((baudRate > 1572864) && (baudRate <= 3145728)) { | |
1671 | *divisor = 3145728 / baudRate; | |
1672 | *clk_sel_val = 0x70; | |
1673 | } | |
1674 | return 0; | |
1675 | ||
1676 | #ifdef NOTMCS7840 | |
1677 | ||
1678 | for (i = 0; i < ARRAY_SIZE(mos7840_divisor_table); i++) { | |
1679 | if (mos7840_divisor_table[i].BaudRate == baudrate) { | |
1680 | *divisor = mos7840_divisor_table[i].Divisor; | |
1681 | return 0; | |
1682 | } | |
1683 | } | |
1684 | ||
1685 | /* After trying for all the standard baud rates * | |
1686 | * Try calculating the divisor for this baud rate */ | |
1687 | ||
1688 | if (baudrate > 75 && baudrate < 230400) { | |
1689 | /* get the divisor */ | |
1690 | custom = (__u16) (230400L / baudrate); | |
1691 | ||
1692 | /* Check for round off */ | |
1693 | round1 = (__u16) (2304000L / baudrate); | |
1694 | round = (__u16) (round1 - (custom * 10)); | |
880af9db | 1695 | if (round > 4) |
3f542974 | 1696 | custom++; |
3f542974 PS |
1697 | *divisor = custom; |
1698 | ||
9c134a14 | 1699 | dev_dbg(&port->dev, " Baud %d = %d\n", baudrate, custom); |
3f542974 PS |
1700 | return 0; |
1701 | } | |
1702 | ||
9c134a14 | 1703 | dev_dbg(&port->dev, "%s", " Baud calculation Failed...\n"); |
3f542974 PS |
1704 | return -1; |
1705 | #endif | |
1706 | } | |
1707 | ||
1708 | /***************************************************************************** | |
1709 | * mos7840_send_cmd_write_baud_rate | |
1710 | * this function sends the proper command to change the baud rate of the | |
1711 | * specified port. | |
1712 | *****************************************************************************/ | |
1713 | ||
1714 | static int mos7840_send_cmd_write_baud_rate(struct moschip_port *mos7840_port, | |
1715 | int baudRate) | |
1716 | { | |
1717 | int divisor = 0; | |
1718 | int status; | |
1719 | __u16 Data; | |
1720 | unsigned char number; | |
1721 | __u16 clk_sel_val; | |
1722 | struct usb_serial_port *port; | |
1723 | ||
1724 | if (mos7840_port == NULL) | |
1725 | return -1; | |
1726 | ||
9c134a14 GKH |
1727 | port = mos7840_port->port; |
1728 | if (mos7840_port_paranoia_check(port, __func__)) | |
3f542974 | 1729 | return -1; |
3f542974 | 1730 | |
9c134a14 | 1731 | if (mos7840_serial_paranoia_check(port->serial, __func__)) |
3f542974 | 1732 | return -1; |
3f542974 | 1733 | |
1143832e | 1734 | number = mos7840_port->port->port_number; |
3f542974 | 1735 | |
1143832e | 1736 | dev_dbg(&port->dev, "%s - baud = %d\n", __func__, baudRate); |
880af9db | 1737 | /* reset clk_uart_sel in spregOffset */ |
3f542974 PS |
1738 | if (baudRate > 115200) { |
1739 | #ifdef HW_flow_control | |
880af9db AC |
1740 | /* NOTE: need to see the pther register to modify */ |
1741 | /* setting h/w flow control bit to 1 */ | |
3f542974 PS |
1742 | Data = 0x2b; |
1743 | mos7840_port->shadowMCR = Data; | |
880af9db AC |
1744 | status = mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, |
1745 | Data); | |
3f542974 | 1746 | if (status < 0) { |
9c134a14 | 1747 | dev_dbg(&port->dev, "Writing spreg failed in set_serial_baud\n"); |
3f542974 PS |
1748 | return -1; |
1749 | } | |
1750 | #endif | |
1751 | ||
1752 | } else { | |
1753 | #ifdef HW_flow_control | |
093ea2d3 | 1754 | /* setting h/w flow control bit to 0 */ |
3f542974 PS |
1755 | Data = 0xb; |
1756 | mos7840_port->shadowMCR = Data; | |
880af9db AC |
1757 | status = mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, |
1758 | Data); | |
3f542974 | 1759 | if (status < 0) { |
9c134a14 | 1760 | dev_dbg(&port->dev, "Writing spreg failed in set_serial_baud\n"); |
3f542974 PS |
1761 | return -1; |
1762 | } | |
1763 | #endif | |
1764 | ||
1765 | } | |
1766 | ||
880af9db | 1767 | if (1) { /* baudRate <= 115200) */ |
3f542974 PS |
1768 | clk_sel_val = 0x0; |
1769 | Data = 0x0; | |
9c134a14 | 1770 | status = mos7840_calc_baud_rate_divisor(port, baudRate, &divisor, |
3f542974 | 1771 | &clk_sel_val); |
880af9db AC |
1772 | status = mos7840_get_reg_sync(port, mos7840_port->SpRegOffset, |
1773 | &Data); | |
3f542974 | 1774 | if (status < 0) { |
9c134a14 | 1775 | dev_dbg(&port->dev, "reading spreg failed in set_serial_baud\n"); |
3f542974 PS |
1776 | return -1; |
1777 | } | |
1778 | Data = (Data & 0x8f) | clk_sel_val; | |
880af9db AC |
1779 | status = mos7840_set_reg_sync(port, mos7840_port->SpRegOffset, |
1780 | Data); | |
3f542974 | 1781 | if (status < 0) { |
9c134a14 | 1782 | dev_dbg(&port->dev, "Writing spreg failed in set_serial_baud\n"); |
3f542974 PS |
1783 | return -1; |
1784 | } | |
1785 | /* Calculate the Divisor */ | |
1786 | ||
1787 | if (status) { | |
194343d9 | 1788 | dev_err(&port->dev, "%s - bad baud rate\n", __func__); |
3f542974 PS |
1789 | return status; |
1790 | } | |
1791 | /* Enable access to divisor latch */ | |
1792 | Data = mos7840_port->shadowLCR | SERIAL_LCR_DLAB; | |
1793 | mos7840_port->shadowLCR = Data; | |
1794 | mos7840_set_uart_reg(port, LINE_CONTROL_REGISTER, Data); | |
1795 | ||
1796 | /* Write the divisor */ | |
1797 | Data = (unsigned char)(divisor & 0xff); | |
9c134a14 | 1798 | dev_dbg(&port->dev, "set_serial_baud Value to write DLL is %x\n", Data); |
3f542974 PS |
1799 | mos7840_set_uart_reg(port, DIVISOR_LATCH_LSB, Data); |
1800 | ||
1801 | Data = (unsigned char)((divisor & 0xff00) >> 8); | |
9c134a14 | 1802 | dev_dbg(&port->dev, "set_serial_baud Value to write DLM is %x\n", Data); |
3f542974 PS |
1803 | mos7840_set_uart_reg(port, DIVISOR_LATCH_MSB, Data); |
1804 | ||
1805 | /* Disable access to divisor latch */ | |
1806 | Data = mos7840_port->shadowLCR & ~SERIAL_LCR_DLAB; | |
1807 | mos7840_port->shadowLCR = Data; | |
1808 | mos7840_set_uart_reg(port, LINE_CONTROL_REGISTER, Data); | |
1809 | ||
1810 | } | |
3f542974 PS |
1811 | return status; |
1812 | } | |
1813 | ||
1814 | /***************************************************************************** | |
1815 | * mos7840_change_port_settings | |
1816 | * This routine is called to set the UART on the device to match | |
1817 | * the specified new settings. | |
1818 | *****************************************************************************/ | |
1819 | ||
95da310e AC |
1820 | static void mos7840_change_port_settings(struct tty_struct *tty, |
1821 | struct moschip_port *mos7840_port, struct ktermios *old_termios) | |
3f542974 | 1822 | { |
3f542974 PS |
1823 | int baud; |
1824 | unsigned cflag; | |
1825 | unsigned iflag; | |
1826 | __u8 lData; | |
1827 | __u8 lParity; | |
1828 | __u8 lStop; | |
1829 | int status; | |
1830 | __u16 Data; | |
1831 | struct usb_serial_port *port; | |
1832 | struct usb_serial *serial; | |
1833 | ||
1834 | if (mos7840_port == NULL) | |
1835 | return; | |
1836 | ||
9c134a14 | 1837 | port = mos7840_port->port; |
3f542974 | 1838 | |
9c134a14 | 1839 | if (mos7840_port_paranoia_check(port, __func__)) |
3f542974 | 1840 | return; |
3f542974 | 1841 | |
9c134a14 | 1842 | if (mos7840_serial_paranoia_check(port->serial, __func__)) |
3f542974 | 1843 | return; |
3f542974 PS |
1844 | |
1845 | serial = port->serial; | |
1846 | ||
3f542974 | 1847 | if (!mos7840_port->open) { |
9c134a14 | 1848 | dev_dbg(&port->dev, "%s - port not opened\n", __func__); |
3f542974 PS |
1849 | return; |
1850 | } | |
1851 | ||
3f542974 PS |
1852 | lData = LCR_BITS_8; |
1853 | lStop = LCR_STOP_1; | |
1854 | lParity = LCR_PAR_NONE; | |
1855 | ||
adc8d746 AC |
1856 | cflag = tty->termios.c_cflag; |
1857 | iflag = tty->termios.c_iflag; | |
3f542974 PS |
1858 | |
1859 | /* Change the number of bits */ | |
1860 | if (cflag & CSIZE) { | |
1861 | switch (cflag & CSIZE) { | |
1862 | case CS5: | |
1863 | lData = LCR_BITS_5; | |
1864 | break; | |
1865 | ||
1866 | case CS6: | |
1867 | lData = LCR_BITS_6; | |
1868 | break; | |
1869 | ||
1870 | case CS7: | |
1871 | lData = LCR_BITS_7; | |
1872 | break; | |
1873 | default: | |
1874 | case CS8: | |
1875 | lData = LCR_BITS_8; | |
1876 | break; | |
1877 | } | |
1878 | } | |
1879 | /* Change the Parity bit */ | |
1880 | if (cflag & PARENB) { | |
1881 | if (cflag & PARODD) { | |
1882 | lParity = LCR_PAR_ODD; | |
9c134a14 | 1883 | dev_dbg(&port->dev, "%s - parity = odd\n", __func__); |
3f542974 PS |
1884 | } else { |
1885 | lParity = LCR_PAR_EVEN; | |
9c134a14 | 1886 | dev_dbg(&port->dev, "%s - parity = even\n", __func__); |
3f542974 PS |
1887 | } |
1888 | ||
1889 | } else { | |
9c134a14 | 1890 | dev_dbg(&port->dev, "%s - parity = none\n", __func__); |
3f542974 PS |
1891 | } |
1892 | ||
880af9db | 1893 | if (cflag & CMSPAR) |
3f542974 | 1894 | lParity = lParity | 0x20; |
3f542974 PS |
1895 | |
1896 | /* Change the Stop bit */ | |
1897 | if (cflag & CSTOPB) { | |
1898 | lStop = LCR_STOP_2; | |
9c134a14 | 1899 | dev_dbg(&port->dev, "%s - stop bits = 2\n", __func__); |
3f542974 PS |
1900 | } else { |
1901 | lStop = LCR_STOP_1; | |
9c134a14 | 1902 | dev_dbg(&port->dev, "%s - stop bits = 1\n", __func__); |
3f542974 PS |
1903 | } |
1904 | ||
1905 | /* Update the LCR with the correct value */ | |
1906 | mos7840_port->shadowLCR &= | |
1907 | ~(LCR_BITS_MASK | LCR_STOP_MASK | LCR_PAR_MASK); | |
1908 | mos7840_port->shadowLCR |= (lData | lParity | lStop); | |
1909 | ||
9c134a14 GKH |
1910 | dev_dbg(&port->dev, "%s - mos7840_port->shadowLCR is %x\n", __func__, |
1911 | mos7840_port->shadowLCR); | |
3f542974 PS |
1912 | /* Disable Interrupts */ |
1913 | Data = 0x00; | |
1914 | mos7840_set_uart_reg(port, INTERRUPT_ENABLE_REGISTER, Data); | |
1915 | ||
1916 | Data = 0x00; | |
1917 | mos7840_set_uart_reg(port, FIFO_CONTROL_REGISTER, Data); | |
1918 | ||
1919 | Data = 0xcf; | |
1920 | mos7840_set_uart_reg(port, FIFO_CONTROL_REGISTER, Data); | |
1921 | ||
1922 | /* Send the updated LCR value to the mos7840 */ | |
1923 | Data = mos7840_port->shadowLCR; | |
1924 | ||
1925 | mos7840_set_uart_reg(port, LINE_CONTROL_REGISTER, Data); | |
1926 | ||
1927 | Data = 0x00b; | |
1928 | mos7840_port->shadowMCR = Data; | |
1929 | mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, Data); | |
1930 | Data = 0x00b; | |
1931 | mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, Data); | |
1932 | ||
1933 | /* set up the MCR register and send it to the mos7840 */ | |
1934 | ||
1935 | mos7840_port->shadowMCR = MCR_MASTER_IE; | |
880af9db | 1936 | if (cflag & CBAUD) |
3f542974 | 1937 | mos7840_port->shadowMCR |= (MCR_DTR | MCR_RTS); |
3f542974 | 1938 | |
880af9db | 1939 | if (cflag & CRTSCTS) |
3f542974 | 1940 | mos7840_port->shadowMCR |= (MCR_XON_ANY); |
880af9db | 1941 | else |
3f542974 | 1942 | mos7840_port->shadowMCR &= ~(MCR_XON_ANY); |
3f542974 PS |
1943 | |
1944 | Data = mos7840_port->shadowMCR; | |
1945 | mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, Data); | |
1946 | ||
1947 | /* Determine divisor based on baud rate */ | |
1948 | baud = tty_get_baud_rate(tty); | |
1949 | ||
1950 | if (!baud) { | |
1951 | /* pick a default, any default... */ | |
9c134a14 | 1952 | dev_dbg(&port->dev, "%s", "Picked default baud...\n"); |
3f542974 PS |
1953 | baud = 9600; |
1954 | } | |
1955 | ||
9c134a14 | 1956 | dev_dbg(&port->dev, "%s - baud rate = %d\n", __func__, baud); |
3f542974 PS |
1957 | status = mos7840_send_cmd_write_baud_rate(mos7840_port, baud); |
1958 | ||
1959 | /* Enable Interrupts */ | |
1960 | Data = 0x0c; | |
1961 | mos7840_set_uart_reg(port, INTERRUPT_ENABLE_REGISTER, Data); | |
1962 | ||
50de36f7 | 1963 | if (mos7840_port->read_urb_busy == false) { |
50de36f7 | 1964 | mos7840_port->read_urb_busy = true; |
3f542974 | 1965 | status = usb_submit_urb(mos7840_port->read_urb, GFP_ATOMIC); |
3f542974 | 1966 | if (status) { |
9c134a14 | 1967 | dev_dbg(&port->dev, "usb_submit_urb(read bulk) failed, status = %d\n", |
3f542974 | 1968 | status); |
50de36f7 | 1969 | mos7840_port->read_urb_busy = false; |
3f542974 PS |
1970 | } |
1971 | } | |
9c134a14 GKH |
1972 | dev_dbg(&port->dev, "%s - mos7840_port->shadowLCR is End %x\n", __func__, |
1973 | mos7840_port->shadowLCR); | |
3f542974 PS |
1974 | } |
1975 | ||
1976 | /***************************************************************************** | |
1977 | * mos7840_set_termios | |
1978 | * this function is called by the tty driver when it wants to change | |
1979 | * the termios structure | |
1980 | *****************************************************************************/ | |
1981 | ||
95da310e AC |
1982 | static void mos7840_set_termios(struct tty_struct *tty, |
1983 | struct usb_serial_port *port, | |
606d099c | 1984 | struct ktermios *old_termios) |
3f542974 PS |
1985 | { |
1986 | int status; | |
1987 | unsigned int cflag; | |
1988 | struct usb_serial *serial; | |
1989 | struct moschip_port *mos7840_port; | |
3363155b | 1990 | |
9c134a14 | 1991 | if (mos7840_port_paranoia_check(port, __func__)) |
3f542974 | 1992 | return; |
3f542974 PS |
1993 | |
1994 | serial = port->serial; | |
1995 | ||
9c134a14 | 1996 | if (mos7840_serial_paranoia_check(serial, __func__)) |
3f542974 | 1997 | return; |
3f542974 PS |
1998 | |
1999 | mos7840_port = mos7840_get_port_private(port); | |
2000 | ||
2001 | if (mos7840_port == NULL) | |
2002 | return; | |
2003 | ||
3f542974 | 2004 | if (!mos7840_port->open) { |
9c134a14 | 2005 | dev_dbg(&port->dev, "%s - port not opened\n", __func__); |
3f542974 PS |
2006 | return; |
2007 | } | |
2008 | ||
9c134a14 | 2009 | dev_dbg(&port->dev, "%s", "setting termios - \n"); |
3f542974 | 2010 | |
adc8d746 | 2011 | cflag = tty->termios.c_cflag; |
3f542974 | 2012 | |
9c134a14 | 2013 | dev_dbg(&port->dev, "%s - clfag %08x iflag %08x\n", __func__, |
d9a80746 | 2014 | tty->termios.c_cflag, RELEVANT_IFLAG(tty->termios.c_iflag)); |
9c134a14 GKH |
2015 | dev_dbg(&port->dev, "%s - old clfag %08x old iflag %08x\n", __func__, |
2016 | old_termios->c_cflag, RELEVANT_IFLAG(old_termios->c_iflag)); | |
3f542974 PS |
2017 | |
2018 | /* change the port settings to the new ones specified */ | |
2019 | ||
95da310e | 2020 | mos7840_change_port_settings(tty, mos7840_port, old_termios); |
3f542974 PS |
2021 | |
2022 | if (!mos7840_port->read_urb) { | |
9c134a14 | 2023 | dev_dbg(&port->dev, "%s", "URB KILLED !!!!!\n"); |
3f542974 PS |
2024 | return; |
2025 | } | |
2026 | ||
50de36f7 | 2027 | if (mos7840_port->read_urb_busy == false) { |
50de36f7 | 2028 | mos7840_port->read_urb_busy = true; |
3f542974 PS |
2029 | status = usb_submit_urb(mos7840_port->read_urb, GFP_ATOMIC); |
2030 | if (status) { | |
9c134a14 | 2031 | dev_dbg(&port->dev, "usb_submit_urb(read bulk) failed, status = %d\n", |
3f542974 | 2032 | status); |
50de36f7 | 2033 | mos7840_port->read_urb_busy = false; |
3f542974 PS |
2034 | } |
2035 | } | |
3f542974 PS |
2036 | } |
2037 | ||
2038 | /***************************************************************************** | |
2039 | * mos7840_get_lsr_info - get line status register info | |
2040 | * | |
2041 | * Purpose: Let user call ioctl() to get info when the UART physically | |
2042 | * is emptied. On bus types like RS485, the transmitter must | |
2043 | * release the bus after transmitting. This must be done when | |
2044 | * the transmit shift register is empty, not be done when the | |
2045 | * transmit holding register is empty. This functionality | |
2046 | * allows an RS485 driver to be written in user space. | |
2047 | *****************************************************************************/ | |
2048 | ||
95da310e | 2049 | static int mos7840_get_lsr_info(struct tty_struct *tty, |
97c4965d | 2050 | unsigned int __user *value) |
3f542974 PS |
2051 | { |
2052 | int count; | |
2053 | unsigned int result = 0; | |
2054 | ||
95da310e | 2055 | count = mos7840_chars_in_buffer(tty); |
9c134a14 | 2056 | if (count == 0) |
3f542974 | 2057 | result = TIOCSER_TEMT; |
3f542974 PS |
2058 | |
2059 | if (copy_to_user(value, &result, sizeof(int))) | |
2060 | return -EFAULT; | |
2061 | return 0; | |
2062 | } | |
2063 | ||
3f542974 PS |
2064 | /***************************************************************************** |
2065 | * mos7840_get_serial_info | |
2066 | * function to get information about serial port | |
2067 | *****************************************************************************/ | |
2068 | ||
2069 | static int mos7840_get_serial_info(struct moschip_port *mos7840_port, | |
97c4965d | 2070 | struct serial_struct __user *retinfo) |
3f542974 PS |
2071 | { |
2072 | struct serial_struct tmp; | |
2073 | ||
2074 | if (mos7840_port == NULL) | |
2075 | return -1; | |
2076 | ||
2077 | if (!retinfo) | |
2078 | return -EFAULT; | |
2079 | ||
2080 | memset(&tmp, 0, sizeof(tmp)); | |
2081 | ||
2082 | tmp.type = PORT_16550A; | |
e5b1e206 | 2083 | tmp.line = mos7840_port->port->minor; |
1143832e | 2084 | tmp.port = mos7840_port->port->port_number; |
3f542974 PS |
2085 | tmp.irq = 0; |
2086 | tmp.flags = ASYNC_SKIP_TEST | ASYNC_AUTO_IRQ; | |
2087 | tmp.xmit_fifo_size = NUM_URBS * URB_TRANSFER_BUFFER_SIZE; | |
2088 | tmp.baud_base = 9600; | |
2089 | tmp.close_delay = 5 * HZ; | |
2090 | tmp.closing_wait = 30 * HZ; | |
2091 | ||
2092 | if (copy_to_user(retinfo, &tmp, sizeof(*retinfo))) | |
2093 | return -EFAULT; | |
2094 | return 0; | |
2095 | } | |
2096 | ||
2097 | /***************************************************************************** | |
2098 | * SerialIoctl | |
2099 | * this function handles any ioctl calls to the driver | |
2100 | *****************************************************************************/ | |
2101 | ||
00a0d0d6 | 2102 | static int mos7840_ioctl(struct tty_struct *tty, |
3f542974 PS |
2103 | unsigned int cmd, unsigned long arg) |
2104 | { | |
95da310e | 2105 | struct usb_serial_port *port = tty->driver_data; |
97c4965d | 2106 | void __user *argp = (void __user *)arg; |
3f542974 | 2107 | struct moschip_port *mos7840_port; |
3f542974 | 2108 | |
9c134a14 | 2109 | if (mos7840_port_paranoia_check(port, __func__)) |
3f542974 | 2110 | return -1; |
3f542974 PS |
2111 | |
2112 | mos7840_port = mos7840_get_port_private(port); | |
3f542974 PS |
2113 | |
2114 | if (mos7840_port == NULL) | |
2115 | return -1; | |
2116 | ||
9c134a14 | 2117 | dev_dbg(&port->dev, "%s - cmd = 0x%x\n", __func__, cmd); |
3f542974 PS |
2118 | |
2119 | switch (cmd) { | |
2120 | /* return number of bytes available */ | |
2121 | ||
3f542974 | 2122 | case TIOCSERGETLSR: |
9c134a14 | 2123 | dev_dbg(&port->dev, "%s TIOCSERGETLSR\n", __func__); |
95da310e | 2124 | return mos7840_get_lsr_info(tty, argp); |
3f542974 | 2125 | |
3f542974 | 2126 | case TIOCGSERIAL: |
9c134a14 | 2127 | dev_dbg(&port->dev, "%s TIOCGSERIAL\n", __func__); |
97c4965d | 2128 | return mos7840_get_serial_info(mos7840_port, argp); |
3f542974 PS |
2129 | |
2130 | case TIOCSSERIAL: | |
9c134a14 | 2131 | dev_dbg(&port->dev, "%s TIOCSSERIAL\n", __func__); |
3f542974 | 2132 | break; |
3f542974 PS |
2133 | default: |
2134 | break; | |
2135 | } | |
3f542974 PS |
2136 | return -ENOIOCTLCMD; |
2137 | } | |
2138 | ||
0eafe4de D |
2139 | static int mos7810_check(struct usb_serial *serial) |
2140 | { | |
2141 | int i, pass_count = 0; | |
15ee89c3 | 2142 | u8 *buf; |
0eafe4de D |
2143 | __u16 data = 0, mcr_data = 0; |
2144 | __u16 test_pattern = 0x55AA; | |
15ee89c3 JH |
2145 | int res; |
2146 | ||
2147 | buf = kmalloc(VENDOR_READ_LENGTH, GFP_KERNEL); | |
2148 | if (!buf) | |
2149 | return 0; /* failed to identify 7810 */ | |
0eafe4de D |
2150 | |
2151 | /* Store MCR setting */ | |
15ee89c3 | 2152 | res = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), |
0eafe4de | 2153 | MCS_RDREQ, MCS_RD_RTYPE, 0x0300, MODEM_CONTROL_REGISTER, |
15ee89c3 JH |
2154 | buf, VENDOR_READ_LENGTH, MOS_WDR_TIMEOUT); |
2155 | if (res == VENDOR_READ_LENGTH) | |
2156 | mcr_data = *buf; | |
0eafe4de D |
2157 | |
2158 | for (i = 0; i < 16; i++) { | |
2159 | /* Send the 1-bit test pattern out to MCS7810 test pin */ | |
2160 | usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), | |
2161 | MCS_WRREQ, MCS_WR_RTYPE, | |
2162 | (0x0300 | (((test_pattern >> i) & 0x0001) << 1)), | |
2163 | MODEM_CONTROL_REGISTER, NULL, 0, MOS_WDR_TIMEOUT); | |
2164 | ||
2165 | /* Read the test pattern back */ | |
15ee89c3 JH |
2166 | res = usb_control_msg(serial->dev, |
2167 | usb_rcvctrlpipe(serial->dev, 0), MCS_RDREQ, | |
2168 | MCS_RD_RTYPE, 0, GPIO_REGISTER, buf, | |
2169 | VENDOR_READ_LENGTH, MOS_WDR_TIMEOUT); | |
2170 | if (res == VENDOR_READ_LENGTH) | |
2171 | data = *buf; | |
0eafe4de D |
2172 | |
2173 | /* If this is a MCS7810 device, both test patterns must match */ | |
2174 | if (((test_pattern >> i) ^ (~data >> 1)) & 0x0001) | |
2175 | break; | |
2176 | ||
2177 | pass_count++; | |
2178 | } | |
2179 | ||
2180 | /* Restore MCR setting */ | |
2181 | usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), MCS_WRREQ, | |
2182 | MCS_WR_RTYPE, 0x0300 | mcr_data, MODEM_CONTROL_REGISTER, NULL, | |
2183 | 0, MOS_WDR_TIMEOUT); | |
2184 | ||
15ee89c3 JH |
2185 | kfree(buf); |
2186 | ||
0eafe4de D |
2187 | if (pass_count == 16) |
2188 | return 1; | |
2189 | ||
2190 | return 0; | |
2191 | } | |
2192 | ||
40c24f28 JH |
2193 | static int mos7840_probe(struct usb_serial *serial, |
2194 | const struct usb_device_id *id) | |
3f542974 | 2195 | { |
d551ec9b | 2196 | u16 product = le16_to_cpu(serial->dev->descriptor.idProduct); |
15ee89c3 | 2197 | u8 *buf; |
40c24f28 JH |
2198 | int device_type; |
2199 | ||
2200 | if (product == MOSCHIP_DEVICE_ID_7810 || | |
2201 | product == MOSCHIP_DEVICE_ID_7820) { | |
2202 | device_type = product; | |
2203 | goto out; | |
2204 | } | |
093ea2d3 | 2205 | |
15ee89c3 | 2206 | buf = kzalloc(VENDOR_READ_LENGTH, GFP_KERNEL); |
40c24f28 JH |
2207 | if (!buf) |
2208 | return -ENOMEM; | |
2209 | ||
2210 | usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), | |
15ee89c3 JH |
2211 | MCS_RDREQ, MCS_RD_RTYPE, 0, GPIO_REGISTER, buf, |
2212 | VENDOR_READ_LENGTH, MOS_WDR_TIMEOUT); | |
093ea2d3 | 2213 | |
40c24f28 JH |
2214 | /* For a MCS7840 device GPIO0 must be set to 1 */ |
2215 | if (buf[0] & 0x01) | |
2216 | device_type = MOSCHIP_DEVICE_ID_7840; | |
2217 | else if (mos7810_check(serial)) | |
2218 | device_type = MOSCHIP_DEVICE_ID_7810; | |
2219 | else | |
2220 | device_type = MOSCHIP_DEVICE_ID_7820; | |
2221 | ||
2222 | kfree(buf); | |
2223 | out: | |
683a0e4d | 2224 | usb_set_serial_data(serial, (void *)(unsigned long)device_type); |
40c24f28 JH |
2225 | |
2226 | return 0; | |
2227 | } | |
2228 | ||
2229 | static int mos7840_calc_num_ports(struct usb_serial *serial) | |
2230 | { | |
683a0e4d | 2231 | int device_type = (unsigned long)usb_get_serial_data(serial); |
40c24f28 | 2232 | int mos7840_num_ports; |
093ea2d3 | 2233 | |
0eafe4de | 2234 | mos7840_num_ports = (device_type >> 4) & 0x000F; |
0eafe4de | 2235 | |
3f542974 PS |
2236 | return mos7840_num_ports; |
2237 | } | |
2238 | ||
80c00750 | 2239 | static int mos7840_port_probe(struct usb_serial_port *port) |
3f542974 | 2240 | { |
80c00750 | 2241 | struct usb_serial *serial = port->serial; |
683a0e4d | 2242 | int device_type = (unsigned long)usb_get_serial_data(serial); |
3f542974 | 2243 | struct moschip_port *mos7840_port; |
80c00750 JH |
2244 | int status; |
2245 | int pnum; | |
3f542974 | 2246 | __u16 Data; |
3f542974 | 2247 | |
3f542974 PS |
2248 | /* we set up the pointers to the endpoints in the mos7840_open * |
2249 | * function, as the structures aren't created yet. */ | |
2250 | ||
1143832e | 2251 | pnum = port->port_number; |
80c00750 | 2252 | |
ae685eff JH |
2253 | dev_dbg(&port->dev, "mos7840_startup: configuring port %d\n", pnum); |
2254 | mos7840_port = kzalloc(sizeof(struct moschip_port), GFP_KERNEL); | |
2255 | if (mos7840_port == NULL) { | |
2256 | dev_err(&port->dev, "%s - Out of memory\n", __func__); | |
2257 | return -ENOMEM; | |
2258 | } | |
3f542974 | 2259 | |
ae685eff JH |
2260 | /* Initialize all port interrupt end point to port 0 int |
2261 | * endpoint. Our device has only one interrupt end point | |
2262 | * common to all port */ | |
2263 | ||
2264 | mos7840_port->port = port; | |
2265 | mos7840_set_port_private(port, mos7840_port); | |
2266 | spin_lock_init(&mos7840_port->pool_lock); | |
2267 | ||
2268 | /* minor is not initialised until later by | |
2269 | * usb-serial.c:get_free_serial() and cannot therefore be used | |
2270 | * to index device instances */ | |
2271 | mos7840_port->port_num = pnum + 1; | |
e5b1e206 | 2272 | dev_dbg(&port->dev, "port->minor = %d\n", port->minor); |
ae685eff | 2273 | dev_dbg(&port->dev, "mos7840_port->port_num = %d\n", mos7840_port->port_num); |
ae685eff JH |
2274 | |
2275 | if (mos7840_port->port_num == 1) { | |
2276 | mos7840_port->SpRegOffset = 0x0; | |
2277 | mos7840_port->ControlRegOffset = 0x1; | |
2278 | mos7840_port->DcrRegOffset = 0x4; | |
2279 | } else if ((mos7840_port->port_num == 2) && (serial->num_ports == 4)) { | |
2280 | mos7840_port->SpRegOffset = 0x8; | |
2281 | mos7840_port->ControlRegOffset = 0x9; | |
2282 | mos7840_port->DcrRegOffset = 0x16; | |
2283 | } else if ((mos7840_port->port_num == 2) && (serial->num_ports == 2)) { | |
2284 | mos7840_port->SpRegOffset = 0xa; | |
2285 | mos7840_port->ControlRegOffset = 0xb; | |
2286 | mos7840_port->DcrRegOffset = 0x19; | |
2287 | } else if ((mos7840_port->port_num == 3) && (serial->num_ports == 4)) { | |
2288 | mos7840_port->SpRegOffset = 0xa; | |
2289 | mos7840_port->ControlRegOffset = 0xb; | |
2290 | mos7840_port->DcrRegOffset = 0x19; | |
2291 | } else if ((mos7840_port->port_num == 4) && (serial->num_ports == 4)) { | |
2292 | mos7840_port->SpRegOffset = 0xc; | |
2293 | mos7840_port->ControlRegOffset = 0xd; | |
2294 | mos7840_port->DcrRegOffset = 0x1c; | |
2295 | } | |
2296 | mos7840_dump_serial_port(port, mos7840_port); | |
2297 | mos7840_set_port_private(port, mos7840_port); | |
2298 | ||
2299 | /* enable rx_disable bit in control register */ | |
2300 | status = mos7840_get_reg_sync(port, | |
2301 | mos7840_port->ControlRegOffset, &Data); | |
2302 | if (status < 0) { | |
2303 | dev_dbg(&port->dev, "Reading ControlReg failed status-0x%x\n", status); | |
2304 | goto out; | |
2305 | } else | |
2306 | dev_dbg(&port->dev, "ControlReg Reading success val is %x, status%d\n", Data, status); | |
2307 | Data |= 0x08; /* setting driver done bit */ | |
2308 | Data |= 0x04; /* sp1_bit to have cts change reflect in | |
2309 | modem status reg */ | |
2310 | ||
2311 | /* Data |= 0x20; //rx_disable bit */ | |
2312 | status = mos7840_set_reg_sync(port, | |
2313 | mos7840_port->ControlRegOffset, Data); | |
2314 | if (status < 0) { | |
2315 | dev_dbg(&port->dev, "Writing ControlReg failed(rx_disable) status-0x%x\n", status); | |
2316 | goto out; | |
2317 | } else | |
2318 | dev_dbg(&port->dev, "ControlReg Writing success(rx_disable) status%d\n", status); | |
2319 | ||
2320 | /* Write default values in DCR (i.e 0x01 in DCR0, 0x05 in DCR2 | |
2321 | and 0x24 in DCR3 */ | |
2322 | Data = 0x01; | |
2323 | status = mos7840_set_reg_sync(port, | |
2324 | (__u16) (mos7840_port->DcrRegOffset + 0), Data); | |
2325 | if (status < 0) { | |
2326 | dev_dbg(&port->dev, "Writing DCR0 failed status-0x%x\n", status); | |
2327 | goto out; | |
2328 | } else | |
2329 | dev_dbg(&port->dev, "DCR0 Writing success status%d\n", status); | |
3f542974 | 2330 | |
ae685eff JH |
2331 | Data = 0x05; |
2332 | status = mos7840_set_reg_sync(port, | |
2333 | (__u16) (mos7840_port->DcrRegOffset + 1), Data); | |
2334 | if (status < 0) { | |
2335 | dev_dbg(&port->dev, "Writing DCR1 failed status-0x%x\n", status); | |
2336 | goto out; | |
2337 | } else | |
2338 | dev_dbg(&port->dev, "DCR1 Writing success status%d\n", status); | |
3f542974 | 2339 | |
ae685eff JH |
2340 | Data = 0x24; |
2341 | status = mos7840_set_reg_sync(port, | |
2342 | (__u16) (mos7840_port->DcrRegOffset + 2), Data); | |
2343 | if (status < 0) { | |
2344 | dev_dbg(&port->dev, "Writing DCR2 failed status-0x%x\n", status); | |
2345 | goto out; | |
2346 | } else | |
2347 | dev_dbg(&port->dev, "DCR2 Writing success status%d\n", status); | |
3f542974 | 2348 | |
ae685eff JH |
2349 | /* write values in clkstart0x0 and clkmulti 0x20 */ |
2350 | Data = 0x0; | |
2351 | status = mos7840_set_reg_sync(port, CLK_START_VALUE_REGISTER, Data); | |
2352 | if (status < 0) { | |
2353 | dev_dbg(&port->dev, "Writing CLK_START_VALUE_REGISTER failed status-0x%x\n", status); | |
2354 | goto out; | |
2355 | } else | |
2356 | dev_dbg(&port->dev, "CLK_START_VALUE_REGISTER Writing success status%d\n", status); | |
3f542974 | 2357 | |
ae685eff JH |
2358 | Data = 0x20; |
2359 | status = mos7840_set_reg_sync(port, CLK_MULTI_REGISTER, Data); | |
2360 | if (status < 0) { | |
2361 | dev_dbg(&port->dev, "Writing CLK_MULTI_REGISTER failed status-0x%x\n", status); | |
2362 | goto error; | |
2363 | } else | |
2364 | dev_dbg(&port->dev, "CLK_MULTI_REGISTER Writing success status%d\n", status); | |
3f542974 | 2365 | |
ae685eff JH |
2366 | /* write value 0x0 to scratchpad register */ |
2367 | Data = 0x00; | |
2368 | status = mos7840_set_uart_reg(port, SCRATCH_PAD_REGISTER, Data); | |
2369 | if (status < 0) { | |
2370 | dev_dbg(&port->dev, "Writing SCRATCH_PAD_REGISTER failed status-0x%x\n", status); | |
2371 | goto out; | |
2372 | } else | |
2373 | dev_dbg(&port->dev, "SCRATCH_PAD_REGISTER Writing success status%d\n", status); | |
2374 | ||
2375 | /* Zero Length flag register */ | |
2376 | if ((mos7840_port->port_num != 1) && (serial->num_ports == 2)) { | |
2377 | Data = 0xff; | |
80c00750 | 2378 | status = mos7840_set_reg_sync(port, |
ae685eff JH |
2379 | (__u16) (ZLP_REG1 + |
2380 | ((__u16)mos7840_port->port_num)), Data); | |
2381 | dev_dbg(&port->dev, "ZLIP offset %x\n", | |
2382 | (__u16)(ZLP_REG1 + ((__u16) mos7840_port->port_num))); | |
3f542974 | 2383 | if (status < 0) { |
ae685eff JH |
2384 | dev_dbg(&port->dev, "Writing ZLP_REG%d failed status-0x%x\n", pnum + 2, status); |
2385 | goto out; | |
3f542974 | 2386 | } else |
ae685eff JH |
2387 | dev_dbg(&port->dev, "ZLP_REG%d Writing success status%d\n", pnum + 2, status); |
2388 | } else { | |
2389 | Data = 0xff; | |
80c00750 | 2390 | status = mos7840_set_reg_sync(port, |
ae685eff JH |
2391 | (__u16) (ZLP_REG1 + |
2392 | ((__u16)mos7840_port->port_num) - 0x1), Data); | |
2393 | dev_dbg(&port->dev, "ZLIP offset %x\n", | |
2394 | (__u16)(ZLP_REG1 + ((__u16) mos7840_port->port_num) - 0x1)); | |
3f542974 | 2395 | if (status < 0) { |
ae685eff JH |
2396 | dev_dbg(&port->dev, "Writing ZLP_REG%d failed status-0x%x\n", pnum + 1, status); |
2397 | goto out; | |
3f542974 | 2398 | } else |
ae685eff | 2399 | dev_dbg(&port->dev, "ZLP_REG%d Writing success status%d\n", pnum + 1, status); |
3f542974 | 2400 | |
ae685eff JH |
2401 | } |
2402 | mos7840_port->control_urb = usb_alloc_urb(0, GFP_KERNEL); | |
2403 | mos7840_port->ctrl_buf = kmalloc(16, GFP_KERNEL); | |
2404 | mos7840_port->dr = kmalloc(sizeof(struct usb_ctrlrequest), | |
2405 | GFP_KERNEL); | |
2406 | if (!mos7840_port->control_urb || !mos7840_port->ctrl_buf || | |
2407 | !mos7840_port->dr) { | |
2408 | status = -ENOMEM; | |
2409 | goto error; | |
2410 | } | |
0eafe4de | 2411 | |
ae685eff | 2412 | mos7840_port->has_led = false; |
0eafe4de | 2413 | |
ae685eff JH |
2414 | /* Initialize LED timers */ |
2415 | if (device_type == MOSCHIP_DEVICE_ID_7810) { | |
2416 | mos7840_port->has_led = true; | |
0eafe4de | 2417 | |
05cf0dec JH |
2418 | mos7840_port->led_urb = usb_alloc_urb(0, GFP_KERNEL); |
2419 | mos7840_port->led_dr = kmalloc(sizeof(*mos7840_port->led_dr), | |
2420 | GFP_KERNEL); | |
2421 | if (!mos7840_port->led_urb || !mos7840_port->led_dr) { | |
2422 | status = -ENOMEM; | |
2423 | goto error; | |
2424 | } | |
2425 | ||
ae685eff JH |
2426 | init_timer(&mos7840_port->led_timer1); |
2427 | mos7840_port->led_timer1.function = mos7840_led_off; | |
2428 | mos7840_port->led_timer1.expires = | |
2429 | jiffies + msecs_to_jiffies(LED_ON_MS); | |
2430 | mos7840_port->led_timer1.data = (unsigned long)mos7840_port; | |
0eafe4de | 2431 | |
ae685eff JH |
2432 | init_timer(&mos7840_port->led_timer2); |
2433 | mos7840_port->led_timer2.function = mos7840_led_flag_off; | |
2434 | mos7840_port->led_timer2.expires = | |
2435 | jiffies + msecs_to_jiffies(LED_OFF_MS); | |
2436 | mos7840_port->led_timer2.data = (unsigned long)mos7840_port; | |
0eafe4de | 2437 | |
ae685eff JH |
2438 | /* Turn off LED */ |
2439 | mos7840_set_led_sync(port, MODEM_CONTROL_REGISTER, 0x0300); | |
2440 | } | |
2441 | out: | |
80c00750 JH |
2442 | if (pnum == serial->num_ports - 1) { |
2443 | /* Zero Length flag enable */ | |
2444 | Data = 0x0f; | |
2445 | status = mos7840_set_reg_sync(serial->port[0], ZLP_REG5, Data); | |
2446 | if (status < 0) { | |
2447 | dev_dbg(&port->dev, "Writing ZLP_REG5 failed status-0x%x\n", status); | |
2448 | goto error; | |
2449 | } else | |
2450 | dev_dbg(&port->dev, "ZLP_REG5 Writing success status%d\n", status); | |
2451 | ||
2452 | /* setting configuration feature to one */ | |
2453 | usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), | |
2454 | 0x03, 0x00, 0x01, 0x00, NULL, 0x00, | |
2455 | MOS_WDR_TIMEOUT); | |
2456 | } | |
3f542974 | 2457 | return 0; |
0de9a702 | 2458 | error: |
05cf0dec JH |
2459 | kfree(mos7840_port->led_dr); |
2460 | usb_free_urb(mos7840_port->led_urb); | |
80c00750 JH |
2461 | kfree(mos7840_port->dr); |
2462 | kfree(mos7840_port->ctrl_buf); | |
2463 | usb_free_urb(mos7840_port->control_urb); | |
2464 | kfree(mos7840_port); | |
0de9a702 | 2465 | |
0de9a702 | 2466 | return status; |
3f542974 PS |
2467 | } |
2468 | ||
80c00750 | 2469 | static int mos7840_port_remove(struct usb_serial_port *port) |
3f542974 | 2470 | { |
3f542974 | 2471 | struct moschip_port *mos7840_port; |
3f542974 | 2472 | |
80c00750 | 2473 | mos7840_port = mos7840_get_port_private(port); |
3f542974 | 2474 | |
80c00750 JH |
2475 | if (mos7840_port->has_led) { |
2476 | /* Turn off LED */ | |
2477 | mos7840_set_led_sync(port, MODEM_CONTROL_REGISTER, 0x0300); | |
3f542974 | 2478 | |
80c00750 JH |
2479 | del_timer_sync(&mos7840_port->led_timer1); |
2480 | del_timer_sync(&mos7840_port->led_timer2); | |
05cf0dec JH |
2481 | |
2482 | usb_kill_urb(mos7840_port->led_urb); | |
2483 | usb_free_urb(mos7840_port->led_urb); | |
2484 | kfree(mos7840_port->led_dr); | |
f9c99bb8 | 2485 | } |
80c00750 JH |
2486 | usb_kill_urb(mos7840_port->control_urb); |
2487 | usb_free_urb(mos7840_port->control_urb); | |
2488 | kfree(mos7840_port->ctrl_buf); | |
2489 | kfree(mos7840_port->dr); | |
2490 | kfree(mos7840_port); | |
f9c99bb8 | 2491 | |
80c00750 | 2492 | return 0; |
3f542974 PS |
2493 | } |
2494 | ||
2495 | static struct usb_serial_driver moschip7840_4port_device = { | |
2496 | .driver = { | |
2497 | .owner = THIS_MODULE, | |
2498 | .name = "mos7840", | |
2499 | }, | |
2500 | .description = DRIVER_DESC, | |
68e24113 | 2501 | .id_table = id_table, |
3f542974 | 2502 | .num_ports = 4, |
3f542974 PS |
2503 | .open = mos7840_open, |
2504 | .close = mos7840_close, | |
2505 | .write = mos7840_write, | |
2506 | .write_room = mos7840_write_room, | |
2507 | .chars_in_buffer = mos7840_chars_in_buffer, | |
2508 | .throttle = mos7840_throttle, | |
2509 | .unthrottle = mos7840_unthrottle, | |
2510 | .calc_num_ports = mos7840_calc_num_ports, | |
40c24f28 | 2511 | .probe = mos7840_probe, |
3f542974 PS |
2512 | .ioctl = mos7840_ioctl, |
2513 | .set_termios = mos7840_set_termios, | |
2514 | .break_ctl = mos7840_break, | |
2515 | .tiocmget = mos7840_tiocmget, | |
2516 | .tiocmset = mos7840_tiocmset, | |
0c613371 | 2517 | .tiocmiwait = usb_serial_generic_tiocmiwait, |
8c1a07ff | 2518 | .get_icount = usb_serial_generic_get_icount, |
80c00750 JH |
2519 | .port_probe = mos7840_port_probe, |
2520 | .port_remove = mos7840_port_remove, | |
3f542974 PS |
2521 | .read_bulk_callback = mos7840_bulk_in_callback, |
2522 | .read_int_callback = mos7840_interrupt_callback, | |
2523 | }; | |
2524 | ||
4d2a7aff AS |
2525 | static struct usb_serial_driver * const serial_drivers[] = { |
2526 | &moschip7840_4port_device, NULL | |
2527 | }; | |
2528 | ||
68e24113 | 2529 | module_usb_serial_driver(serial_drivers, id_table); |
3f542974 | 2530 | |
3f542974 PS |
2531 | MODULE_DESCRIPTION(DRIVER_DESC); |
2532 | MODULE_LICENSE("GPL"); |