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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> | |
3f542974 PS |
27 | #include <linux/slab.h> |
28 | #include <linux/tty.h> | |
29 | #include <linux/tty_driver.h> | |
30 | #include <linux/tty_flip.h> | |
31 | #include <linux/module.h> | |
32 | #include <linux/serial.h> | |
33 | #include <linux/usb.h> | |
34 | #include <linux/usb/serial.h> | |
880af9db | 35 | #include <linux/uaccess.h> |
3f542974 | 36 | |
3f542974 PS |
37 | #define DRIVER_DESC "Moschip 7840/7820 USB Serial Driver" |
38 | ||
39 | /* | |
40 | * 16C50 UART register defines | |
41 | */ | |
42 | ||
43 | #define LCR_BITS_5 0x00 /* 5 bits/char */ | |
44 | #define LCR_BITS_6 0x01 /* 6 bits/char */ | |
45 | #define LCR_BITS_7 0x02 /* 7 bits/char */ | |
46 | #define LCR_BITS_8 0x03 /* 8 bits/char */ | |
47 | #define LCR_BITS_MASK 0x03 /* Mask for bits/char field */ | |
48 | ||
49 | #define LCR_STOP_1 0x00 /* 1 stop bit */ | |
50 | #define LCR_STOP_1_5 0x04 /* 1.5 stop bits (if 5 bits/char) */ | |
51 | #define LCR_STOP_2 0x04 /* 2 stop bits (if 6-8 bits/char) */ | |
52 | #define LCR_STOP_MASK 0x04 /* Mask for stop bits field */ | |
53 | ||
54 | #define LCR_PAR_NONE 0x00 /* No parity */ | |
55 | #define LCR_PAR_ODD 0x08 /* Odd parity */ | |
56 | #define LCR_PAR_EVEN 0x18 /* Even parity */ | |
57 | #define LCR_PAR_MARK 0x28 /* Force parity bit to 1 */ | |
58 | #define LCR_PAR_SPACE 0x38 /* Force parity bit to 0 */ | |
59 | #define LCR_PAR_MASK 0x38 /* Mask for parity field */ | |
60 | ||
61 | #define LCR_SET_BREAK 0x40 /* Set Break condition */ | |
62 | #define LCR_DL_ENABLE 0x80 /* Enable access to divisor latch */ | |
63 | ||
64 | #define MCR_DTR 0x01 /* Assert DTR */ | |
65 | #define MCR_RTS 0x02 /* Assert RTS */ | |
66 | #define MCR_OUT1 0x04 /* Loopback only: Sets state of RI */ | |
67 | #define MCR_MASTER_IE 0x08 /* Enable interrupt outputs */ | |
68 | #define MCR_LOOPBACK 0x10 /* Set internal (digital) loopback mode */ | |
69 | #define MCR_XON_ANY 0x20 /* Enable any char to exit XOFF mode */ | |
70 | ||
71 | #define MOS7840_MSR_CTS 0x10 /* Current state of CTS */ | |
72 | #define MOS7840_MSR_DSR 0x20 /* Current state of DSR */ | |
73 | #define MOS7840_MSR_RI 0x40 /* Current state of RI */ | |
74 | #define MOS7840_MSR_CD 0x80 /* Current state of CD */ | |
75 | ||
76 | /* | |
77 | * Defines used for sending commands to port | |
78 | */ | |
79 | ||
1e658489 | 80 | #define MOS_WDR_TIMEOUT 5000 /* default urb timeout */ |
3f542974 PS |
81 | |
82 | #define MOS_PORT1 0x0200 | |
83 | #define MOS_PORT2 0x0300 | |
84 | #define MOS_VENREG 0x0000 | |
85 | #define MOS_MAX_PORT 0x02 | |
86 | #define MOS_WRITE 0x0E | |
87 | #define MOS_READ 0x0D | |
88 | ||
89 | /* Requests */ | |
90 | #define MCS_RD_RTYPE 0xC0 | |
91 | #define MCS_WR_RTYPE 0x40 | |
92 | #define MCS_RDREQ 0x0D | |
93 | #define MCS_WRREQ 0x0E | |
94 | #define MCS_CTRL_TIMEOUT 500 | |
95 | #define VENDOR_READ_LENGTH (0x01) | |
96 | ||
97 | #define MAX_NAME_LEN 64 | |
98 | ||
880af9db AC |
99 | #define ZLP_REG1 0x3A /* Zero_Flag_Reg1 58 */ |
100 | #define ZLP_REG5 0x3E /* Zero_Flag_Reg5 62 */ | |
3f542974 PS |
101 | |
102 | /* For higher baud Rates use TIOCEXBAUD */ | |
103 | #define TIOCEXBAUD 0x5462 | |
104 | ||
105 | /* vendor id and device id defines */ | |
106 | ||
11e1abb4 | 107 | /* The native mos7840/7820 component */ |
3f542974 PS |
108 | #define USB_VENDOR_ID_MOSCHIP 0x9710 |
109 | #define MOSCHIP_DEVICE_ID_7840 0x7840 | |
110 | #define MOSCHIP_DEVICE_ID_7820 0x7820 | |
0eafe4de | 111 | #define MOSCHIP_DEVICE_ID_7810 0x7810 |
11e1abb4 DL |
112 | /* The native component can have its vendor/device id's overridden |
113 | * in vendor-specific implementations. Such devices can be handled | |
68e24113 | 114 | * by making a change here, in id_table. |
11e1abb4 | 115 | */ |
870408c8 DL |
116 | #define USB_VENDOR_ID_BANDB 0x0856 |
117 | #define BANDB_DEVICE_ID_USO9ML2_2 0xAC22 | |
118 | #define BANDB_DEVICE_ID_USO9ML2_2P 0xBC00 | |
119 | #define BANDB_DEVICE_ID_USO9ML2_4 0xAC24 | |
120 | #define BANDB_DEVICE_ID_USO9ML2_4P 0xBC01 | |
121 | #define BANDB_DEVICE_ID_US9ML2_2 0xAC29 | |
122 | #define BANDB_DEVICE_ID_US9ML2_4 0xAC30 | |
123 | #define BANDB_DEVICE_ID_USPTL4_2 0xAC31 | |
124 | #define BANDB_DEVICE_ID_USPTL4_4 0xAC32 | |
125 | #define BANDB_DEVICE_ID_USOPTL4_2 0xAC42 | |
126 | #define BANDB_DEVICE_ID_USOPTL4_2P 0xBC02 | |
127 | #define BANDB_DEVICE_ID_USOPTL4_4 0xAC44 | |
128 | #define BANDB_DEVICE_ID_USOPTL4_4P 0xBC03 | |
129 | #define BANDB_DEVICE_ID_USOPTL2_4 0xAC24 | |
3f542974 | 130 | |
9d498bea RL |
131 | /* This driver also supports |
132 | * ATEN UC2324 device using Moschip MCS7840 | |
133 | * ATEN UC2322 device using Moschip MCS7820 | |
134 | */ | |
e9b8cffa TC |
135 | #define USB_VENDOR_ID_ATENINTL 0x0557 |
136 | #define ATENINTL_DEVICE_ID_UC2324 0x2011 | |
9d498bea | 137 | #define ATENINTL_DEVICE_ID_UC2322 0x7820 |
e9b8cffa | 138 | |
11e1abb4 | 139 | /* Interrupt Routine Defines */ |
3f542974 PS |
140 | |
141 | #define SERIAL_IIR_RLS 0x06 | |
142 | #define SERIAL_IIR_MS 0x00 | |
143 | ||
144 | /* | |
145 | * Emulation of the bit mask on the LINE STATUS REGISTER. | |
146 | */ | |
147 | #define SERIAL_LSR_DR 0x0001 | |
148 | #define SERIAL_LSR_OE 0x0002 | |
149 | #define SERIAL_LSR_PE 0x0004 | |
150 | #define SERIAL_LSR_FE 0x0008 | |
151 | #define SERIAL_LSR_BI 0x0010 | |
152 | ||
153 | #define MOS_MSR_DELTA_CTS 0x10 | |
154 | #define MOS_MSR_DELTA_DSR 0x20 | |
155 | #define MOS_MSR_DELTA_RI 0x40 | |
156 | #define MOS_MSR_DELTA_CD 0x80 | |
157 | ||
880af9db | 158 | /* Serial Port register Address */ |
3f542974 PS |
159 | #define INTERRUPT_ENABLE_REGISTER ((__u16)(0x01)) |
160 | #define FIFO_CONTROL_REGISTER ((__u16)(0x02)) | |
161 | #define LINE_CONTROL_REGISTER ((__u16)(0x03)) | |
162 | #define MODEM_CONTROL_REGISTER ((__u16)(0x04)) | |
163 | #define LINE_STATUS_REGISTER ((__u16)(0x05)) | |
164 | #define MODEM_STATUS_REGISTER ((__u16)(0x06)) | |
165 | #define SCRATCH_PAD_REGISTER ((__u16)(0x07)) | |
166 | #define DIVISOR_LATCH_LSB ((__u16)(0x00)) | |
167 | #define DIVISOR_LATCH_MSB ((__u16)(0x01)) | |
168 | ||
169 | #define CLK_MULTI_REGISTER ((__u16)(0x02)) | |
170 | #define CLK_START_VALUE_REGISTER ((__u16)(0x03)) | |
093ea2d3 | 171 | #define GPIO_REGISTER ((__u16)(0x07)) |
3f542974 PS |
172 | |
173 | #define SERIAL_LCR_DLAB ((__u16)(0x0080)) | |
174 | ||
175 | /* | |
176 | * URB POOL related defines | |
177 | */ | |
178 | #define NUM_URBS 16 /* URB Count */ | |
179 | #define URB_TRANSFER_BUFFER_SIZE 32 /* URB Size */ | |
180 | ||
0eafe4de D |
181 | /* LED on/off milliseconds*/ |
182 | #define LED_ON_MS 500 | |
183 | #define LED_OFF_MS 500 | |
184 | ||
d8a083cc JH |
185 | enum mos7840_flag { |
186 | MOS7840_FLAG_CTRL_BUSY, | |
05cf0dec | 187 | MOS7840_FLAG_LED_BUSY, |
d8a083cc | 188 | }; |
3f542974 | 189 | |
b9c87663 | 190 | static const struct usb_device_id id_table[] = { |
3f542974 PS |
191 | {USB_DEVICE(USB_VENDOR_ID_MOSCHIP, MOSCHIP_DEVICE_ID_7840)}, |
192 | {USB_DEVICE(USB_VENDOR_ID_MOSCHIP, MOSCHIP_DEVICE_ID_7820)}, | |
0eafe4de | 193 | {USB_DEVICE(USB_VENDOR_ID_MOSCHIP, MOSCHIP_DEVICE_ID_7810)}, |
acf509ae | 194 | {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USO9ML2_2)}, |
870408c8 | 195 | {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USO9ML2_2P)}, |
acf509ae | 196 | {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USO9ML2_4)}, |
870408c8 | 197 | {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USO9ML2_4P)}, |
acf509ae CB |
198 | {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_US9ML2_2)}, |
199 | {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_US9ML2_4)}, | |
200 | {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USPTL4_2)}, | |
201 | {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USPTL4_4)}, | |
11e1abb4 | 202 | {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USOPTL4_2)}, |
870408c8 | 203 | {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USOPTL4_2P)}, |
acf509ae | 204 | {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USOPTL4_4)}, |
870408c8 | 205 | {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USOPTL4_4P)}, |
27f1281d | 206 | {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USOPTL2_4)}, |
e9b8cffa | 207 | {USB_DEVICE(USB_VENDOR_ID_ATENINTL, ATENINTL_DEVICE_ID_UC2324)}, |
9d498bea | 208 | {USB_DEVICE(USB_VENDOR_ID_ATENINTL, ATENINTL_DEVICE_ID_UC2322)}, |
3f542974 PS |
209 | {} /* terminating entry */ |
210 | }; | |
68e24113 | 211 | MODULE_DEVICE_TABLE(usb, id_table); |
3f542974 PS |
212 | |
213 | /* This structure holds all of the local port information */ | |
214 | ||
215 | struct moschip_port { | |
216 | int port_num; /*Actual port number in the device(1,2,etc) */ | |
217 | struct urb *write_urb; /* write URB for this port */ | |
218 | struct urb *read_urb; /* read URB for this port */ | |
219 | __u8 shadowLCR; /* last LCR value received */ | |
220 | __u8 shadowMCR; /* last MCR value received */ | |
221 | char open; | |
0de9a702 | 222 | char open_ports; |
3f542974 PS |
223 | struct usb_serial_port *port; /* loop back to the owner of this object */ |
224 | ||
880af9db | 225 | /* Offsets */ |
3f542974 PS |
226 | __u8 SpRegOffset; |
227 | __u8 ControlRegOffset; | |
228 | __u8 DcrRegOffset; | |
880af9db | 229 | /* for processing control URBS in interrupt context */ |
3f542974 | 230 | struct urb *control_urb; |
0de9a702 | 231 | struct usb_ctrlrequest *dr; |
3f542974 PS |
232 | char *ctrl_buf; |
233 | int MsrLsr; | |
234 | ||
0de9a702 | 235 | spinlock_t pool_lock; |
3f542974 | 236 | struct urb *write_urb_pool[NUM_URBS]; |
0de9a702 | 237 | char busy[NUM_URBS]; |
50de36f7 | 238 | bool read_urb_busy; |
3f542974 | 239 | |
0eafe4de D |
240 | /* For device(s) with LED indicator */ |
241 | bool has_led; | |
0eafe4de D |
242 | struct timer_list led_timer1; /* Timer for LED on */ |
243 | struct timer_list led_timer2; /* Timer for LED off */ | |
05cf0dec JH |
244 | struct urb *led_urb; |
245 | struct usb_ctrlrequest *led_dr; | |
d8a083cc JH |
246 | |
247 | unsigned long flags; | |
0eafe4de | 248 | }; |
3f542974 | 249 | |
3f542974 PS |
250 | /* |
251 | * mos7840_set_reg_sync | |
252 | * To set the Control register by calling usb_fill_control_urb function | |
253 | * by passing usb_sndctrlpipe function as parameter. | |
254 | */ | |
255 | ||
256 | static int mos7840_set_reg_sync(struct usb_serial_port *port, __u16 reg, | |
257 | __u16 val) | |
258 | { | |
259 | struct usb_device *dev = port->serial->dev; | |
260 | val = val & 0x00ff; | |
9c134a14 | 261 | dev_dbg(&port->dev, "mos7840_set_reg_sync offset is %x, value %x\n", reg, val); |
3f542974 PS |
262 | |
263 | return usb_control_msg(dev, usb_sndctrlpipe(dev, 0), MCS_WRREQ, | |
264 | MCS_WR_RTYPE, val, reg, NULL, 0, | |
265 | MOS_WDR_TIMEOUT); | |
266 | } | |
267 | ||
268 | /* | |
269 | * mos7840_get_reg_sync | |
270 | * To set the Uart register by calling usb_fill_control_urb function by | |
271 | * passing usb_rcvctrlpipe function as parameter. | |
272 | */ | |
273 | ||
274 | static int mos7840_get_reg_sync(struct usb_serial_port *port, __u16 reg, | |
880af9db | 275 | __u16 *val) |
3f542974 PS |
276 | { |
277 | struct usb_device *dev = port->serial->dev; | |
278 | int ret = 0; | |
9e221a35 JH |
279 | u8 *buf; |
280 | ||
281 | buf = kmalloc(VENDOR_READ_LENGTH, GFP_KERNEL); | |
282 | if (!buf) | |
283 | return -ENOMEM; | |
3f542974 PS |
284 | |
285 | ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), MCS_RDREQ, | |
9e221a35 | 286 | MCS_RD_RTYPE, 0, reg, buf, VENDOR_READ_LENGTH, |
3f542974 | 287 | MOS_WDR_TIMEOUT); |
9e221a35 | 288 | *val = buf[0]; |
9c134a14 | 289 | dev_dbg(&port->dev, "%s offset is %x, return val %x\n", __func__, reg, *val); |
9e221a35 JH |
290 | |
291 | kfree(buf); | |
3f542974 PS |
292 | return ret; |
293 | } | |
294 | ||
295 | /* | |
296 | * mos7840_set_uart_reg | |
297 | * To set the Uart register by calling usb_fill_control_urb function by | |
298 | * passing usb_sndctrlpipe function as parameter. | |
299 | */ | |
300 | ||
301 | static int mos7840_set_uart_reg(struct usb_serial_port *port, __u16 reg, | |
302 | __u16 val) | |
303 | { | |
304 | ||
305 | struct usb_device *dev = port->serial->dev; | |
306 | val = val & 0x00ff; | |
880af9db AC |
307 | /* For the UART control registers, the application number need |
308 | to be Or'ed */ | |
0de9a702 | 309 | if (port->serial->num_ports == 4) { |
1143832e | 310 | val |= ((__u16)port->port_number + 1) << 8; |
3f542974 | 311 | } else { |
1143832e GKH |
312 | if (port->port_number == 0) { |
313 | val |= ((__u16)port->port_number + 1) << 8; | |
3f542974 | 314 | } else { |
1143832e | 315 | val |= ((__u16)port->port_number + 2) << 8; |
3f542974 PS |
316 | } |
317 | } | |
9c134a14 | 318 | dev_dbg(&port->dev, "%s application number is %x\n", __func__, val); |
3f542974 PS |
319 | return usb_control_msg(dev, usb_sndctrlpipe(dev, 0), MCS_WRREQ, |
320 | MCS_WR_RTYPE, val, reg, NULL, 0, | |
321 | MOS_WDR_TIMEOUT); | |
322 | ||
323 | } | |
324 | ||
325 | /* | |
326 | * mos7840_get_uart_reg | |
327 | * To set the Control register by calling usb_fill_control_urb function | |
328 | * by passing usb_rcvctrlpipe function as parameter. | |
329 | */ | |
330 | static int mos7840_get_uart_reg(struct usb_serial_port *port, __u16 reg, | |
880af9db | 331 | __u16 *val) |
3f542974 PS |
332 | { |
333 | struct usb_device *dev = port->serial->dev; | |
334 | int ret = 0; | |
335 | __u16 Wval; | |
9e221a35 JH |
336 | u8 *buf; |
337 | ||
338 | buf = kmalloc(VENDOR_READ_LENGTH, GFP_KERNEL); | |
339 | if (!buf) | |
340 | return -ENOMEM; | |
3f542974 | 341 | |
880af9db | 342 | /* Wval is same as application number */ |
0de9a702 | 343 | if (port->serial->num_ports == 4) { |
1143832e | 344 | Wval = ((__u16)port->port_number + 1) << 8; |
3f542974 | 345 | } else { |
1143832e GKH |
346 | if (port->port_number == 0) { |
347 | Wval = ((__u16)port->port_number + 1) << 8; | |
3f542974 | 348 | } else { |
1143832e | 349 | Wval = ((__u16)port->port_number + 2) << 8; |
3f542974 PS |
350 | } |
351 | } | |
9c134a14 | 352 | dev_dbg(&port->dev, "%s application number is %x\n", __func__, Wval); |
3f542974 | 353 | ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), MCS_RDREQ, |
9e221a35 | 354 | MCS_RD_RTYPE, Wval, reg, buf, VENDOR_READ_LENGTH, |
3f542974 | 355 | MOS_WDR_TIMEOUT); |
9e221a35 JH |
356 | *val = buf[0]; |
357 | ||
358 | kfree(buf); | |
3f542974 PS |
359 | return ret; |
360 | } | |
361 | ||
9c134a14 GKH |
362 | static void mos7840_dump_serial_port(struct usb_serial_port *port, |
363 | struct moschip_port *mos7840_port) | |
3f542974 PS |
364 | { |
365 | ||
9c134a14 GKH |
366 | dev_dbg(&port->dev, "SpRegOffset is %2x\n", mos7840_port->SpRegOffset); |
367 | dev_dbg(&port->dev, "ControlRegOffset is %2x\n", mos7840_port->ControlRegOffset); | |
368 | dev_dbg(&port->dev, "DCRRegOffset is %2x\n", mos7840_port->DcrRegOffset); | |
3f542974 PS |
369 | |
370 | } | |
371 | ||
372 | /************************************************************************/ | |
373 | /************************************************************************/ | |
374 | /* I N T E R F A C E F U N C T I O N S */ | |
375 | /* I N T E R F A C E F U N C T I O N S */ | |
376 | /************************************************************************/ | |
377 | /************************************************************************/ | |
378 | ||
379 | static inline void mos7840_set_port_private(struct usb_serial_port *port, | |
380 | struct moschip_port *data) | |
381 | { | |
382 | usb_set_serial_port_data(port, (void *)data); | |
383 | } | |
384 | ||
385 | static inline struct moschip_port *mos7840_get_port_private(struct | |
386 | usb_serial_port | |
387 | *port) | |
388 | { | |
389 | return (struct moschip_port *)usb_get_serial_port_data(port); | |
390 | } | |
391 | ||
0de9a702 | 392 | static void mos7840_handle_new_msr(struct moschip_port *port, __u8 new_msr) |
3f542974 PS |
393 | { |
394 | struct moschip_port *mos7840_port; | |
395 | struct async_icount *icount; | |
396 | mos7840_port = port; | |
3f542974 PS |
397 | if (new_msr & |
398 | (MOS_MSR_DELTA_CTS | MOS_MSR_DELTA_DSR | MOS_MSR_DELTA_RI | | |
399 | MOS_MSR_DELTA_CD)) { | |
8c1a07ff | 400 | icount = &mos7840_port->port->icount; |
3f542974 PS |
401 | |
402 | /* update input line counters */ | |
c9fac853 | 403 | if (new_msr & MOS_MSR_DELTA_CTS) |
3f542974 | 404 | icount->cts++; |
c9fac853 | 405 | if (new_msr & MOS_MSR_DELTA_DSR) |
3f542974 | 406 | icount->dsr++; |
c9fac853 | 407 | if (new_msr & MOS_MSR_DELTA_CD) |
3f542974 | 408 | icount->dcd++; |
c9fac853 | 409 | if (new_msr & MOS_MSR_DELTA_RI) |
3f542974 | 410 | icount->rng++; |
e670c6af | 411 | |
0c613371 | 412 | wake_up_interruptible(&port->port->port.delta_msr_wait); |
3f542974 | 413 | } |
3f542974 PS |
414 | } |
415 | ||
0de9a702 | 416 | static void mos7840_handle_new_lsr(struct moschip_port *port, __u8 new_lsr) |
3f542974 PS |
417 | { |
418 | struct async_icount *icount; | |
419 | ||
3f542974 | 420 | if (new_lsr & SERIAL_LSR_BI) { |
880af9db AC |
421 | /* |
422 | * Parity and Framing errors only count if they | |
423 | * occur exclusive of a break being | |
424 | * received. | |
425 | */ | |
3f542974 PS |
426 | new_lsr &= (__u8) (SERIAL_LSR_OE | SERIAL_LSR_BI); |
427 | } | |
428 | ||
429 | /* update input line counters */ | |
8c1a07ff | 430 | icount = &port->port->icount; |
c9fac853 | 431 | if (new_lsr & SERIAL_LSR_BI) |
3f542974 | 432 | icount->brk++; |
c9fac853 | 433 | if (new_lsr & SERIAL_LSR_OE) |
3f542974 | 434 | icount->overrun++; |
c9fac853 | 435 | if (new_lsr & SERIAL_LSR_PE) |
3f542974 | 436 | icount->parity++; |
c9fac853 | 437 | if (new_lsr & SERIAL_LSR_FE) |
3f542974 | 438 | icount->frame++; |
3f542974 PS |
439 | } |
440 | ||
441 | /************************************************************************/ | |
442 | /************************************************************************/ | |
443 | /* U S B C A L L B A C K F U N C T I O N S */ | |
444 | /* U S B C A L L B A C K F U N C T I O N S */ | |
445 | /************************************************************************/ | |
446 | /************************************************************************/ | |
447 | ||
7d12e780 | 448 | static void mos7840_control_callback(struct urb *urb) |
3f542974 PS |
449 | { |
450 | unsigned char *data; | |
451 | struct moschip_port *mos7840_port; | |
9c134a14 | 452 | struct device *dev = &urb->dev->dev; |
3f542974 | 453 | __u8 regval = 0x0; |
0643c724 | 454 | int status = urb->status; |
3f542974 | 455 | |
cdc97792 | 456 | mos7840_port = urb->context; |
0de9a702 | 457 | |
0643c724 | 458 | switch (status) { |
3f542974 PS |
459 | case 0: |
460 | /* success */ | |
461 | break; | |
462 | case -ECONNRESET: | |
463 | case -ENOENT: | |
464 | case -ESHUTDOWN: | |
465 | /* this urb is terminated, clean up */ | |
9c134a14 | 466 | dev_dbg(dev, "%s - urb shutting down with status: %d\n", __func__, status); |
d8a083cc | 467 | goto out; |
3f542974 | 468 | default: |
9c134a14 | 469 | dev_dbg(dev, "%s - nonzero urb status received: %d\n", __func__, status); |
d8a083cc | 470 | goto out; |
3f542974 PS |
471 | } |
472 | ||
9c134a14 GKH |
473 | dev_dbg(dev, "%s urb buffer size is %d\n", __func__, urb->actual_length); |
474 | dev_dbg(dev, "%s mos7840_port->MsrLsr is %d port %d\n", __func__, | |
475 | mos7840_port->MsrLsr, mos7840_port->port_num); | |
3f542974 PS |
476 | data = urb->transfer_buffer; |
477 | regval = (__u8) data[0]; | |
9c134a14 | 478 | dev_dbg(dev, "%s data is %x\n", __func__, regval); |
3f542974 PS |
479 | if (mos7840_port->MsrLsr == 0) |
480 | mos7840_handle_new_msr(mos7840_port, regval); | |
481 | else if (mos7840_port->MsrLsr == 1) | |
482 | mos7840_handle_new_lsr(mos7840_port, regval); | |
d8a083cc JH |
483 | out: |
484 | clear_bit_unlock(MOS7840_FLAG_CTRL_BUSY, &mos7840_port->flags); | |
3f542974 PS |
485 | } |
486 | ||
487 | static int mos7840_get_reg(struct moschip_port *mcs, __u16 Wval, __u16 reg, | |
880af9db | 488 | __u16 *val) |
3f542974 PS |
489 | { |
490 | struct usb_device *dev = mcs->port->serial->dev; | |
0de9a702 ON |
491 | struct usb_ctrlrequest *dr = mcs->dr; |
492 | unsigned char *buffer = mcs->ctrl_buf; | |
493 | int ret; | |
3f542974 | 494 | |
d8a083cc JH |
495 | if (test_and_set_bit_lock(MOS7840_FLAG_CTRL_BUSY, &mcs->flags)) |
496 | return -EBUSY; | |
497 | ||
3f542974 PS |
498 | dr->bRequestType = MCS_RD_RTYPE; |
499 | dr->bRequest = MCS_RDREQ; | |
880af9db | 500 | dr->wValue = cpu_to_le16(Wval); /* 0 */ |
3f542974 PS |
501 | dr->wIndex = cpu_to_le16(reg); |
502 | dr->wLength = cpu_to_le16(2); | |
503 | ||
504 | usb_fill_control_urb(mcs->control_urb, dev, usb_rcvctrlpipe(dev, 0), | |
505 | (unsigned char *)dr, buffer, 2, | |
506 | mos7840_control_callback, mcs); | |
507 | mcs->control_urb->transfer_buffer_length = 2; | |
508 | ret = usb_submit_urb(mcs->control_urb, GFP_ATOMIC); | |
d8a083cc JH |
509 | if (ret) |
510 | clear_bit_unlock(MOS7840_FLAG_CTRL_BUSY, &mcs->flags); | |
511 | ||
3f542974 PS |
512 | return ret; |
513 | } | |
514 | ||
0eafe4de D |
515 | static void mos7840_set_led_callback(struct urb *urb) |
516 | { | |
517 | switch (urb->status) { | |
518 | case 0: | |
519 | /* Success */ | |
520 | break; | |
521 | case -ECONNRESET: | |
522 | case -ENOENT: | |
523 | case -ESHUTDOWN: | |
524 | /* This urb is terminated, clean up */ | |
9c134a14 GKH |
525 | dev_dbg(&urb->dev->dev, "%s - urb shutting down with status: %d", |
526 | __func__, urb->status); | |
0eafe4de D |
527 | break; |
528 | default: | |
9c134a14 GKH |
529 | dev_dbg(&urb->dev->dev, "%s - nonzero urb status received: %d", |
530 | __func__, urb->status); | |
0eafe4de D |
531 | } |
532 | } | |
533 | ||
534 | static void mos7840_set_led_async(struct moschip_port *mcs, __u16 wval, | |
535 | __u16 reg) | |
536 | { | |
537 | struct usb_device *dev = mcs->port->serial->dev; | |
05cf0dec | 538 | struct usb_ctrlrequest *dr = mcs->led_dr; |
0eafe4de D |
539 | |
540 | dr->bRequestType = MCS_WR_RTYPE; | |
541 | dr->bRequest = MCS_WRREQ; | |
542 | dr->wValue = cpu_to_le16(wval); | |
543 | dr->wIndex = cpu_to_le16(reg); | |
544 | dr->wLength = cpu_to_le16(0); | |
545 | ||
05cf0dec | 546 | usb_fill_control_urb(mcs->led_urb, dev, usb_sndctrlpipe(dev, 0), |
0eafe4de D |
547 | (unsigned char *)dr, NULL, 0, mos7840_set_led_callback, NULL); |
548 | ||
05cf0dec | 549 | usb_submit_urb(mcs->led_urb, GFP_ATOMIC); |
0eafe4de D |
550 | } |
551 | ||
552 | static void mos7840_set_led_sync(struct usb_serial_port *port, __u16 reg, | |
553 | __u16 val) | |
554 | { | |
555 | struct usb_device *dev = port->serial->dev; | |
556 | ||
557 | usb_control_msg(dev, usb_sndctrlpipe(dev, 0), MCS_WRREQ, MCS_WR_RTYPE, | |
558 | val, reg, NULL, 0, MOS_WDR_TIMEOUT); | |
559 | } | |
560 | ||
561 | static void mos7840_led_off(unsigned long arg) | |
562 | { | |
563 | struct moschip_port *mcs = (struct moschip_port *) arg; | |
564 | ||
565 | /* Turn off LED */ | |
566 | mos7840_set_led_async(mcs, 0x0300, MODEM_CONTROL_REGISTER); | |
567 | mod_timer(&mcs->led_timer2, | |
568 | jiffies + msecs_to_jiffies(LED_OFF_MS)); | |
569 | } | |
570 | ||
571 | static void mos7840_led_flag_off(unsigned long arg) | |
572 | { | |
573 | struct moschip_port *mcs = (struct moschip_port *) arg; | |
574 | ||
05cf0dec JH |
575 | clear_bit_unlock(MOS7840_FLAG_LED_BUSY, &mcs->flags); |
576 | } | |
577 | ||
578 | static void mos7840_led_activity(struct usb_serial_port *port) | |
579 | { | |
580 | struct moschip_port *mos7840_port = usb_get_serial_port_data(port); | |
581 | ||
582 | if (test_and_set_bit_lock(MOS7840_FLAG_LED_BUSY, &mos7840_port->flags)) | |
583 | return; | |
584 | ||
585 | mos7840_set_led_async(mos7840_port, 0x0301, MODEM_CONTROL_REGISTER); | |
586 | mod_timer(&mos7840_port->led_timer1, | |
587 | jiffies + msecs_to_jiffies(LED_ON_MS)); | |
0eafe4de D |
588 | } |
589 | ||
3f542974 PS |
590 | /***************************************************************************** |
591 | * mos7840_interrupt_callback | |
592 | * this is the callback function for when we have received data on the | |
593 | * interrupt endpoint. | |
594 | *****************************************************************************/ | |
595 | ||
7d12e780 | 596 | static void mos7840_interrupt_callback(struct urb *urb) |
3f542974 PS |
597 | { |
598 | int result; | |
599 | int length; | |
600 | struct moschip_port *mos7840_port; | |
601 | struct usb_serial *serial; | |
602 | __u16 Data; | |
603 | unsigned char *data; | |
604 | __u8 sp[5], st; | |
0de9a702 ON |
605 | int i, rv = 0; |
606 | __u16 wval, wreg = 0; | |
0643c724 | 607 | int status = urb->status; |
3f542974 | 608 | |
0643c724 | 609 | switch (status) { |
3f542974 PS |
610 | case 0: |
611 | /* success */ | |
612 | break; | |
613 | case -ECONNRESET: | |
614 | case -ENOENT: | |
615 | case -ESHUTDOWN: | |
616 | /* this urb is terminated, clean up */ | |
9c134a14 GKH |
617 | dev_dbg(&urb->dev->dev, "%s - urb shutting down with status: %d\n", |
618 | __func__, status); | |
3f542974 PS |
619 | return; |
620 | default: | |
9c134a14 GKH |
621 | dev_dbg(&urb->dev->dev, "%s - nonzero urb status received: %d\n", |
622 | __func__, status); | |
3f542974 PS |
623 | goto exit; |
624 | } | |
625 | ||
626 | length = urb->actual_length; | |
627 | data = urb->transfer_buffer; | |
628 | ||
cdc97792 | 629 | serial = urb->context; |
3f542974 PS |
630 | |
631 | /* Moschip get 5 bytes | |
632 | * Byte 1 IIR Port 1 (port.number is 0) | |
633 | * Byte 2 IIR Port 2 (port.number is 1) | |
634 | * Byte 3 IIR Port 3 (port.number is 2) | |
635 | * Byte 4 IIR Port 4 (port.number is 3) | |
636 | * Byte 5 FIFO status for both */ | |
637 | ||
638 | if (length && length > 5) { | |
9c134a14 | 639 | dev_dbg(&urb->dev->dev, "%s", "Wrong data !!!\n"); |
3f542974 PS |
640 | return; |
641 | } | |
642 | ||
643 | sp[0] = (__u8) data[0]; | |
644 | sp[1] = (__u8) data[1]; | |
645 | sp[2] = (__u8) data[2]; | |
646 | sp[3] = (__u8) data[3]; | |
647 | st = (__u8) data[4]; | |
648 | ||
649 | for (i = 0; i < serial->num_ports; i++) { | |
650 | mos7840_port = mos7840_get_port_private(serial->port[i]); | |
1143832e | 651 | wval = ((__u16)serial->port[i]->port_number + 1) << 8; |
3f542974 PS |
652 | if (mos7840_port->open) { |
653 | if (sp[i] & 0x01) { | |
9c134a14 | 654 | dev_dbg(&urb->dev->dev, "SP%d No Interrupt !!!\n", i); |
3f542974 PS |
655 | } else { |
656 | switch (sp[i] & 0x0f) { | |
657 | case SERIAL_IIR_RLS: | |
9c134a14 GKH |
658 | dev_dbg(&urb->dev->dev, "Serial Port %d: Receiver status error or \n", i); |
659 | dev_dbg(&urb->dev->dev, "address bit detected in 9-bit mode\n"); | |
3f542974 | 660 | mos7840_port->MsrLsr = 1; |
0de9a702 | 661 | wreg = LINE_STATUS_REGISTER; |
3f542974 PS |
662 | break; |
663 | case SERIAL_IIR_MS: | |
9c134a14 | 664 | dev_dbg(&urb->dev->dev, "Serial Port %d: Modem status change\n", i); |
3f542974 | 665 | mos7840_port->MsrLsr = 0; |
0de9a702 | 666 | wreg = MODEM_STATUS_REGISTER; |
3f542974 PS |
667 | break; |
668 | } | |
e681b66f | 669 | rv = mos7840_get_reg(mos7840_port, wval, wreg, &Data); |
3f542974 PS |
670 | } |
671 | } | |
672 | } | |
880af9db AC |
673 | if (!(rv < 0)) |
674 | /* the completion handler for the control urb will resubmit */ | |
0de9a702 ON |
675 | return; |
676 | exit: | |
3f542974 PS |
677 | result = usb_submit_urb(urb, GFP_ATOMIC); |
678 | if (result) { | |
679 | dev_err(&urb->dev->dev, | |
680 | "%s - Error %d submitting interrupt urb\n", | |
441b62c1 | 681 | __func__, result); |
3f542974 | 682 | } |
3f542974 PS |
683 | } |
684 | ||
685 | static int mos7840_port_paranoia_check(struct usb_serial_port *port, | |
686 | const char *function) | |
687 | { | |
688 | if (!port) { | |
9c134a14 | 689 | pr_debug("%s - port == NULL\n", function); |
3f542974 PS |
690 | return -1; |
691 | } | |
692 | if (!port->serial) { | |
9c134a14 | 693 | pr_debug("%s - port->serial == NULL\n", function); |
3f542974 PS |
694 | return -1; |
695 | } | |
696 | ||
697 | return 0; | |
698 | } | |
699 | ||
700 | /* Inline functions to check the sanity of a pointer that is passed to us */ | |
701 | static int mos7840_serial_paranoia_check(struct usb_serial *serial, | |
702 | const char *function) | |
703 | { | |
704 | if (!serial) { | |
9c134a14 | 705 | pr_debug("%s - serial == NULL\n", function); |
3f542974 PS |
706 | return -1; |
707 | } | |
708 | if (!serial->type) { | |
9c134a14 | 709 | pr_debug("%s - serial->type == NULL!\n", function); |
3f542974 PS |
710 | return -1; |
711 | } | |
712 | ||
713 | return 0; | |
714 | } | |
715 | ||
716 | static struct usb_serial *mos7840_get_usb_serial(struct usb_serial_port *port, | |
717 | const char *function) | |
718 | { | |
719 | /* if no port was specified, or it fails a paranoia check */ | |
720 | if (!port || | |
721 | mos7840_port_paranoia_check(port, function) || | |
722 | mos7840_serial_paranoia_check(port->serial, function)) { | |
880af9db AC |
723 | /* then say that we don't have a valid usb_serial thing, |
724 | * which will end up genrating -ENODEV return values */ | |
3f542974 PS |
725 | return NULL; |
726 | } | |
727 | ||
728 | return port->serial; | |
729 | } | |
730 | ||
731 | /***************************************************************************** | |
732 | * mos7840_bulk_in_callback | |
733 | * this is the callback function for when we have received data on the | |
734 | * bulk in endpoint. | |
735 | *****************************************************************************/ | |
736 | ||
7d12e780 | 737 | static void mos7840_bulk_in_callback(struct urb *urb) |
3f542974 | 738 | { |
0643c724 | 739 | int retval; |
3f542974 PS |
740 | unsigned char *data; |
741 | struct usb_serial *serial; | |
742 | struct usb_serial_port *port; | |
743 | struct moschip_port *mos7840_port; | |
0643c724 | 744 | int status = urb->status; |
3f542974 | 745 | |
cdc97792 | 746 | mos7840_port = urb->context; |
9c134a14 | 747 | if (!mos7840_port) |
50de36f7 | 748 | return; |
50de36f7 GKH |
749 | |
750 | if (status) { | |
9c134a14 | 751 | dev_dbg(&urb->dev->dev, "nonzero read bulk status received: %d\n", status); |
50de36f7 | 752 | mos7840_port->read_urb_busy = false; |
3f542974 PS |
753 | return; |
754 | } | |
755 | ||
9c134a14 | 756 | port = mos7840_port->port; |
441b62c1 | 757 | if (mos7840_port_paranoia_check(port, __func__)) { |
50de36f7 | 758 | mos7840_port->read_urb_busy = false; |
3f542974 PS |
759 | return; |
760 | } | |
761 | ||
441b62c1 | 762 | serial = mos7840_get_usb_serial(port, __func__); |
3f542974 | 763 | if (!serial) { |
50de36f7 | 764 | mos7840_port->read_urb_busy = false; |
3f542974 PS |
765 | return; |
766 | } | |
767 | ||
3f542974 | 768 | data = urb->transfer_buffer; |
59d33f2f | 769 | usb_serial_debug_data(&port->dev, __func__, urb->actual_length, data); |
3f542974 | 770 | |
3f542974 | 771 | if (urb->actual_length) { |
05c7cd39 | 772 | struct tty_port *tport = &mos7840_port->port->port; |
2e124b4a JS |
773 | tty_insert_flip_string(tport, data, urb->actual_length); |
774 | tty_flip_buffer_push(tport); | |
8c1a07ff JH |
775 | port->icount.rx += urb->actual_length; |
776 | dev_dbg(&port->dev, "icount.rx is %d:\n", port->icount.rx); | |
3f542974 PS |
777 | } |
778 | ||
779 | if (!mos7840_port->read_urb) { | |
9c134a14 | 780 | dev_dbg(&port->dev, "%s", "URB KILLED !!!\n"); |
50de36f7 | 781 | mos7840_port->read_urb_busy = false; |
3f542974 PS |
782 | return; |
783 | } | |
784 | ||
05cf0dec JH |
785 | if (mos7840_port->has_led) |
786 | mos7840_led_activity(port); | |
3f542974 | 787 | |
50de36f7 | 788 | mos7840_port->read_urb_busy = true; |
0643c724 | 789 | retval = usb_submit_urb(mos7840_port->read_urb, GFP_ATOMIC); |
0de9a702 | 790 | |
0643c724 | 791 | if (retval) { |
9c134a14 | 792 | dev_dbg(&port->dev, "usb_submit_urb(read bulk) failed, retval = %d\n", retval); |
50de36f7 | 793 | mos7840_port->read_urb_busy = false; |
3f542974 PS |
794 | } |
795 | } | |
796 | ||
797 | /***************************************************************************** | |
798 | * mos7840_bulk_out_data_callback | |
880af9db AC |
799 | * this is the callback function for when we have finished sending |
800 | * serial data on the bulk out endpoint. | |
3f542974 PS |
801 | *****************************************************************************/ |
802 | ||
7d12e780 | 803 | static void mos7840_bulk_out_data_callback(struct urb *urb) |
3f542974 PS |
804 | { |
805 | struct moschip_port *mos7840_port; | |
9c134a14 | 806 | struct usb_serial_port *port; |
0643c724 | 807 | int status = urb->status; |
0de9a702 ON |
808 | int i; |
809 | ||
cdc97792 | 810 | mos7840_port = urb->context; |
9c134a14 | 811 | port = mos7840_port->port; |
0de9a702 ON |
812 | spin_lock(&mos7840_port->pool_lock); |
813 | for (i = 0; i < NUM_URBS; i++) { | |
814 | if (urb == mos7840_port->write_urb_pool[i]) { | |
815 | mos7840_port->busy[i] = 0; | |
816 | break; | |
817 | } | |
818 | } | |
819 | spin_unlock(&mos7840_port->pool_lock); | |
820 | ||
0643c724 | 821 | if (status) { |
9c134a14 | 822 | dev_dbg(&port->dev, "nonzero write bulk status received:%d\n", status); |
3f542974 PS |
823 | return; |
824 | } | |
825 | ||
9c134a14 | 826 | if (mos7840_port_paranoia_check(port, __func__)) |
3f542974 | 827 | return; |
3f542974 | 828 | |
6aad04f2 JS |
829 | if (mos7840_port->open) |
830 | tty_port_tty_wakeup(&port->port); | |
3f542974 PS |
831 | |
832 | } | |
833 | ||
834 | /************************************************************************/ | |
835 | /* 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 */ | |
836 | /************************************************************************/ | |
3f542974 PS |
837 | |
838 | /***************************************************************************** | |
839 | * mos7840_open | |
840 | * this function is called by the tty driver when a port is opened | |
841 | * If successful, we return 0 | |
842 | * Otherwise we return a negative error number. | |
843 | *****************************************************************************/ | |
844 | ||
a509a7e4 | 845 | static int mos7840_open(struct tty_struct *tty, struct usb_serial_port *port) |
3f542974 PS |
846 | { |
847 | int response; | |
848 | int j; | |
849 | struct usb_serial *serial; | |
850 | struct urb *urb; | |
851 | __u16 Data; | |
852 | int status; | |
853 | struct moschip_port *mos7840_port; | |
0de9a702 | 854 | struct moschip_port *port0; |
3f542974 | 855 | |
9c134a14 | 856 | if (mos7840_port_paranoia_check(port, __func__)) |
3f542974 | 857 | return -ENODEV; |
3f542974 | 858 | |
3f542974 PS |
859 | serial = port->serial; |
860 | ||
9c134a14 | 861 | if (mos7840_serial_paranoia_check(serial, __func__)) |
3f542974 | 862 | return -ENODEV; |
3f542974 PS |
863 | |
864 | mos7840_port = mos7840_get_port_private(port); | |
0de9a702 | 865 | port0 = mos7840_get_port_private(serial->port[0]); |
3f542974 | 866 | |
0de9a702 | 867 | if (mos7840_port == NULL || port0 == NULL) |
3f542974 PS |
868 | return -ENODEV; |
869 | ||
870 | usb_clear_halt(serial->dev, port->write_urb->pipe); | |
871 | usb_clear_halt(serial->dev, port->read_urb->pipe); | |
0de9a702 | 872 | port0->open_ports++; |
3f542974 PS |
873 | |
874 | /* Initialising the write urb pool */ | |
875 | for (j = 0; j < NUM_URBS; ++j) { | |
0de9a702 | 876 | urb = usb_alloc_urb(0, GFP_KERNEL); |
3f542974 | 877 | mos7840_port->write_urb_pool[j] = urb; |
10c642d0 | 878 | if (!urb) |
3f542974 | 879 | continue; |
3f542974 | 880 | |
880af9db AC |
881 | urb->transfer_buffer = kmalloc(URB_TRANSFER_BUFFER_SIZE, |
882 | GFP_KERNEL); | |
3f542974 | 883 | if (!urb->transfer_buffer) { |
0de9a702 ON |
884 | usb_free_urb(urb); |
885 | mos7840_port->write_urb_pool[j] = NULL; | |
3f542974 PS |
886 | continue; |
887 | } | |
888 | } | |
889 | ||
890 | /***************************************************************************** | |
891 | * Initialize MCS7840 -- Write Init values to corresponding Registers | |
892 | * | |
893 | * Register Index | |
894 | * 1 : IER | |
895 | * 2 : FCR | |
896 | * 3 : LCR | |
897 | * 4 : MCR | |
898 | * | |
899 | * 0x08 : SP1/2 Control Reg | |
900 | *****************************************************************************/ | |
901 | ||
880af9db | 902 | /* NEED to check the following Block */ |
3f542974 | 903 | |
3f542974 PS |
904 | Data = 0x0; |
905 | status = mos7840_get_reg_sync(port, mos7840_port->SpRegOffset, &Data); | |
906 | if (status < 0) { | |
9c134a14 | 907 | dev_dbg(&port->dev, "Reading Spreg failed\n"); |
5f8a2e68 | 908 | goto err; |
3f542974 PS |
909 | } |
910 | Data |= 0x80; | |
911 | status = mos7840_set_reg_sync(port, mos7840_port->SpRegOffset, Data); | |
912 | if (status < 0) { | |
9c134a14 | 913 | dev_dbg(&port->dev, "writing Spreg failed\n"); |
5f8a2e68 | 914 | goto err; |
3f542974 PS |
915 | } |
916 | ||
917 | Data &= ~0x80; | |
918 | status = mos7840_set_reg_sync(port, mos7840_port->SpRegOffset, Data); | |
919 | if (status < 0) { | |
9c134a14 | 920 | dev_dbg(&port->dev, "writing Spreg failed\n"); |
5f8a2e68 | 921 | goto err; |
3f542974 | 922 | } |
880af9db | 923 | /* End of block to be checked */ |
3f542974 | 924 | |
3f542974 | 925 | Data = 0x0; |
880af9db AC |
926 | status = mos7840_get_reg_sync(port, mos7840_port->ControlRegOffset, |
927 | &Data); | |
3f542974 | 928 | if (status < 0) { |
9c134a14 | 929 | dev_dbg(&port->dev, "Reading Controlreg failed\n"); |
5f8a2e68 | 930 | goto err; |
3f542974 | 931 | } |
880af9db AC |
932 | Data |= 0x08; /* Driver done bit */ |
933 | Data |= 0x20; /* rx_disable */ | |
934 | status = mos7840_set_reg_sync(port, | |
935 | mos7840_port->ControlRegOffset, Data); | |
3f542974 | 936 | if (status < 0) { |
9c134a14 | 937 | dev_dbg(&port->dev, "writing Controlreg failed\n"); |
5f8a2e68 | 938 | goto err; |
3f542974 | 939 | } |
880af9db AC |
940 | /* do register settings here */ |
941 | /* Set all regs to the device default values. */ | |
942 | /*********************************** | |
943 | * First Disable all interrupts. | |
944 | ***********************************/ | |
3f542974 | 945 | Data = 0x00; |
3f542974 PS |
946 | status = mos7840_set_uart_reg(port, INTERRUPT_ENABLE_REGISTER, Data); |
947 | if (status < 0) { | |
9c134a14 | 948 | dev_dbg(&port->dev, "disabling interrupts failed\n"); |
5f8a2e68 | 949 | goto err; |
3f542974 | 950 | } |
880af9db | 951 | /* Set FIFO_CONTROL_REGISTER to the default value */ |
3f542974 | 952 | Data = 0x00; |
3f542974 PS |
953 | status = mos7840_set_uart_reg(port, FIFO_CONTROL_REGISTER, Data); |
954 | if (status < 0) { | |
9c134a14 | 955 | dev_dbg(&port->dev, "Writing FIFO_CONTROL_REGISTER failed\n"); |
5f8a2e68 | 956 | goto err; |
3f542974 PS |
957 | } |
958 | ||
959 | Data = 0xcf; | |
3f542974 PS |
960 | status = mos7840_set_uart_reg(port, FIFO_CONTROL_REGISTER, Data); |
961 | if (status < 0) { | |
9c134a14 | 962 | dev_dbg(&port->dev, "Writing FIFO_CONTROL_REGISTER failed\n"); |
5f8a2e68 | 963 | goto err; |
3f542974 PS |
964 | } |
965 | ||
966 | Data = 0x03; | |
3f542974 PS |
967 | status = mos7840_set_uart_reg(port, LINE_CONTROL_REGISTER, Data); |
968 | mos7840_port->shadowLCR = Data; | |
969 | ||
970 | Data = 0x0b; | |
3f542974 PS |
971 | status = mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, Data); |
972 | mos7840_port->shadowMCR = Data; | |
973 | ||
974 | Data = 0x00; | |
3f542974 PS |
975 | status = mos7840_get_uart_reg(port, LINE_CONTROL_REGISTER, &Data); |
976 | mos7840_port->shadowLCR = Data; | |
977 | ||
880af9db | 978 | Data |= SERIAL_LCR_DLAB; /* data latch enable in LCR 0x80 */ |
3f542974 PS |
979 | status = mos7840_set_uart_reg(port, LINE_CONTROL_REGISTER, Data); |
980 | ||
981 | Data = 0x0c; | |
3f542974 PS |
982 | status = mos7840_set_uart_reg(port, DIVISOR_LATCH_LSB, Data); |
983 | ||
984 | Data = 0x0; | |
3f542974 PS |
985 | status = mos7840_set_uart_reg(port, DIVISOR_LATCH_MSB, Data); |
986 | ||
987 | Data = 0x00; | |
3f542974 PS |
988 | status = mos7840_get_uart_reg(port, LINE_CONTROL_REGISTER, &Data); |
989 | ||
990 | Data = Data & ~SERIAL_LCR_DLAB; | |
3f542974 PS |
991 | status = mos7840_set_uart_reg(port, LINE_CONTROL_REGISTER, Data); |
992 | mos7840_port->shadowLCR = Data; | |
993 | ||
880af9db | 994 | /* clearing Bulkin and Bulkout Fifo */ |
3f542974 | 995 | Data = 0x0; |
3f542974 PS |
996 | status = mos7840_get_reg_sync(port, mos7840_port->SpRegOffset, &Data); |
997 | ||
998 | Data = Data | 0x0c; | |
3f542974 PS |
999 | status = mos7840_set_reg_sync(port, mos7840_port->SpRegOffset, Data); |
1000 | ||
1001 | Data = Data & ~0x0c; | |
3f542974 | 1002 | status = mos7840_set_reg_sync(port, mos7840_port->SpRegOffset, Data); |
880af9db | 1003 | /* Finally enable all interrupts */ |
3f542974 | 1004 | Data = 0x0c; |
3f542974 PS |
1005 | status = mos7840_set_uart_reg(port, INTERRUPT_ENABLE_REGISTER, Data); |
1006 | ||
880af9db | 1007 | /* clearing rx_disable */ |
3f542974 | 1008 | Data = 0x0; |
880af9db AC |
1009 | status = mos7840_get_reg_sync(port, mos7840_port->ControlRegOffset, |
1010 | &Data); | |
3f542974 | 1011 | Data = Data & ~0x20; |
880af9db AC |
1012 | status = mos7840_set_reg_sync(port, mos7840_port->ControlRegOffset, |
1013 | Data); | |
3f542974 | 1014 | |
880af9db | 1015 | /* rx_negate */ |
3f542974 | 1016 | Data = 0x0; |
880af9db AC |
1017 | status = mos7840_get_reg_sync(port, mos7840_port->ControlRegOffset, |
1018 | &Data); | |
3f542974 | 1019 | Data = Data | 0x10; |
880af9db AC |
1020 | status = mos7840_set_reg_sync(port, mos7840_port->ControlRegOffset, |
1021 | Data); | |
3f542974 | 1022 | |
880af9db AC |
1023 | /* Check to see if we've set up our endpoint info yet * |
1024 | * (can't set it up in mos7840_startup as the structures * | |
1025 | * were not set up at that time.) */ | |
0de9a702 | 1026 | if (port0->open_ports == 1) { |
3f542974 | 1027 | if (serial->port[0]->interrupt_in_buffer == NULL) { |
3f542974 | 1028 | /* set up interrupt urb */ |
3f542974 | 1029 | usb_fill_int_urb(serial->port[0]->interrupt_in_urb, |
880af9db AC |
1030 | serial->dev, |
1031 | usb_rcvintpipe(serial->dev, | |
1032 | serial->port[0]->interrupt_in_endpointAddress), | |
1033 | serial->port[0]->interrupt_in_buffer, | |
1034 | serial->port[0]->interrupt_in_urb-> | |
1035 | transfer_buffer_length, | |
1036 | mos7840_interrupt_callback, | |
1037 | serial, | |
1038 | serial->port[0]->interrupt_in_urb->interval); | |
3f542974 PS |
1039 | |
1040 | /* start interrupt read for mos7840 * | |
1041 | * will continue as long as mos7840 is connected */ | |
1042 | ||
1043 | response = | |
1044 | usb_submit_urb(serial->port[0]->interrupt_in_urb, | |
1045 | GFP_KERNEL); | |
1046 | if (response) { | |
194343d9 GKH |
1047 | dev_err(&port->dev, "%s - Error %d submitting " |
1048 | "interrupt urb\n", __func__, response); | |
3f542974 PS |
1049 | } |
1050 | ||
1051 | } | |
1052 | ||
1053 | } | |
1054 | ||
1055 | /* see if we've set up our endpoint info yet * | |
1056 | * (can't set it up in mos7840_startup as the * | |
1057 | * structures were not set up at that time.) */ | |
1058 | ||
1143832e | 1059 | dev_dbg(&port->dev, "port number is %d\n", port->port_number); |
e5b1e206 | 1060 | dev_dbg(&port->dev, "minor number is %d\n", port->minor); |
9c134a14 GKH |
1061 | dev_dbg(&port->dev, "Bulkin endpoint is %d\n", port->bulk_in_endpointAddress); |
1062 | dev_dbg(&port->dev, "BulkOut endpoint is %d\n", port->bulk_out_endpointAddress); | |
1063 | dev_dbg(&port->dev, "Interrupt endpoint is %d\n", port->interrupt_in_endpointAddress); | |
1064 | dev_dbg(&port->dev, "port's number in the device is %d\n", mos7840_port->port_num); | |
3f542974 PS |
1065 | mos7840_port->read_urb = port->read_urb; |
1066 | ||
1067 | /* set up our bulk in urb */ | |
1143832e | 1068 | if ((serial->num_ports == 2) && (((__u16)port->port_number % 2) != 0)) { |
093ea2d3 DL |
1069 | usb_fill_bulk_urb(mos7840_port->read_urb, |
1070 | serial->dev, | |
1071 | usb_rcvbulkpipe(serial->dev, | |
1072 | (port->bulk_in_endpointAddress) + 2), | |
1073 | port->bulk_in_buffer, | |
1074 | mos7840_port->read_urb->transfer_buffer_length, | |
1075 | mos7840_bulk_in_callback, mos7840_port); | |
1076 | } else { | |
1077 | usb_fill_bulk_urb(mos7840_port->read_urb, | |
1078 | serial->dev, | |
1079 | usb_rcvbulkpipe(serial->dev, | |
1080 | port->bulk_in_endpointAddress), | |
1081 | port->bulk_in_buffer, | |
1082 | mos7840_port->read_urb->transfer_buffer_length, | |
1083 | mos7840_bulk_in_callback, mos7840_port); | |
1084 | } | |
3f542974 | 1085 | |
9c134a14 | 1086 | dev_dbg(&port->dev, "%s: bulkin endpoint is %d\n", __func__, port->bulk_in_endpointAddress); |
50de36f7 | 1087 | mos7840_port->read_urb_busy = true; |
3f542974 PS |
1088 | response = usb_submit_urb(mos7840_port->read_urb, GFP_KERNEL); |
1089 | if (response) { | |
194343d9 GKH |
1090 | dev_err(&port->dev, "%s - Error %d submitting control urb\n", |
1091 | __func__, response); | |
50de36f7 | 1092 | mos7840_port->read_urb_busy = false; |
3f542974 PS |
1093 | } |
1094 | ||
3f542974 | 1095 | /* initialize our port settings */ |
880af9db AC |
1096 | /* Must set to enable ints! */ |
1097 | mos7840_port->shadowMCR = MCR_MASTER_IE; | |
3f542974 PS |
1098 | /* send a open port command */ |
1099 | mos7840_port->open = 1; | |
880af9db | 1100 | /* mos7840_change_port_settings(mos7840_port,old_termios); */ |
3f542974 | 1101 | |
3f542974 | 1102 | return 0; |
5f8a2e68 JH |
1103 | err: |
1104 | for (j = 0; j < NUM_URBS; ++j) { | |
1105 | urb = mos7840_port->write_urb_pool[j]; | |
1106 | if (!urb) | |
1107 | continue; | |
1108 | kfree(urb->transfer_buffer); | |
1109 | usb_free_urb(urb); | |
1110 | } | |
1111 | return status; | |
3f542974 PS |
1112 | } |
1113 | ||
1114 | /***************************************************************************** | |
1115 | * mos7840_chars_in_buffer | |
1116 | * this function is called by the tty driver when it wants to know how many | |
1117 | * bytes of data we currently have outstanding in the port (data that has | |
1118 | * been written, but hasn't made it out the port yet) | |
1119 | * If successful, we return the number of bytes left to be written in the | |
1120 | * system, | |
95da310e | 1121 | * Otherwise we return zero. |
3f542974 PS |
1122 | *****************************************************************************/ |
1123 | ||
95da310e | 1124 | static int mos7840_chars_in_buffer(struct tty_struct *tty) |
3f542974 | 1125 | { |
95da310e | 1126 | struct usb_serial_port *port = tty->driver_data; |
3f542974 PS |
1127 | int i; |
1128 | int chars = 0; | |
0de9a702 | 1129 | unsigned long flags; |
3f542974 PS |
1130 | struct moschip_port *mos7840_port; |
1131 | ||
9c134a14 | 1132 | if (mos7840_port_paranoia_check(port, __func__)) |
95da310e | 1133 | return 0; |
3f542974 PS |
1134 | |
1135 | mos7840_port = mos7840_get_port_private(port); | |
3363155b | 1136 | if (mos7840_port == NULL) |
95da310e | 1137 | return 0; |
3f542974 | 1138 | |
880af9db | 1139 | spin_lock_irqsave(&mos7840_port->pool_lock, flags); |
5c263b92 MF |
1140 | for (i = 0; i < NUM_URBS; ++i) { |
1141 | if (mos7840_port->busy[i]) { | |
1142 | struct urb *urb = mos7840_port->write_urb_pool[i]; | |
1143 | chars += urb->transfer_buffer_length; | |
1144 | } | |
1145 | } | |
880af9db | 1146 | spin_unlock_irqrestore(&mos7840_port->pool_lock, flags); |
9c134a14 | 1147 | dev_dbg(&port->dev, "%s - returns %d\n", __func__, chars); |
0de9a702 | 1148 | return chars; |
3f542974 PS |
1149 | |
1150 | } | |
1151 | ||
3f542974 PS |
1152 | /***************************************************************************** |
1153 | * mos7840_close | |
1154 | * this function is called by the tty driver when a port is closed | |
1155 | *****************************************************************************/ | |
1156 | ||
335f8514 | 1157 | static void mos7840_close(struct usb_serial_port *port) |
3f542974 PS |
1158 | { |
1159 | struct usb_serial *serial; | |
1160 | struct moschip_port *mos7840_port; | |
0de9a702 | 1161 | struct moschip_port *port0; |
3f542974 PS |
1162 | int j; |
1163 | __u16 Data; | |
1164 | ||
9c134a14 | 1165 | if (mos7840_port_paranoia_check(port, __func__)) |
3f542974 | 1166 | return; |
3f542974 | 1167 | |
441b62c1 | 1168 | serial = mos7840_get_usb_serial(port, __func__); |
9c134a14 | 1169 | if (!serial) |
3f542974 | 1170 | return; |
3f542974 PS |
1171 | |
1172 | mos7840_port = mos7840_get_port_private(port); | |
0de9a702 | 1173 | port0 = mos7840_get_port_private(serial->port[0]); |
3f542974 | 1174 | |
0de9a702 | 1175 | if (mos7840_port == NULL || port0 == NULL) |
3f542974 | 1176 | return; |
3f542974 PS |
1177 | |
1178 | for (j = 0; j < NUM_URBS; ++j) | |
1179 | usb_kill_urb(mos7840_port->write_urb_pool[j]); | |
1180 | ||
1181 | /* Freeing Write URBs */ | |
1182 | for (j = 0; j < NUM_URBS; ++j) { | |
1183 | if (mos7840_port->write_urb_pool[j]) { | |
1184 | if (mos7840_port->write_urb_pool[j]->transfer_buffer) | |
1185 | kfree(mos7840_port->write_urb_pool[j]-> | |
1186 | transfer_buffer); | |
1187 | ||
1188 | usb_free_urb(mos7840_port->write_urb_pool[j]); | |
1189 | } | |
1190 | } | |
1191 | ||
bb3529c6 JH |
1192 | usb_kill_urb(mos7840_port->write_urb); |
1193 | usb_kill_urb(mos7840_port->read_urb); | |
1194 | mos7840_port->read_urb_busy = false; | |
1195 | ||
0de9a702 | 1196 | port0->open_ports--; |
1143832e | 1197 | dev_dbg(&port->dev, "%s in close%d\n", __func__, port0->open_ports); |
0de9a702 | 1198 | if (port0->open_ports == 0) { |
3f542974 | 1199 | if (serial->port[0]->interrupt_in_urb) { |
9c134a14 | 1200 | dev_dbg(&port->dev, "Shutdown interrupt_in_urb\n"); |
0de9a702 | 1201 | usb_kill_urb(serial->port[0]->interrupt_in_urb); |
3f542974 PS |
1202 | } |
1203 | } | |
1204 | ||
1205 | if (mos7840_port->write_urb) { | |
1206 | /* if this urb had a transfer buffer already (old tx) free it */ | |
ae8d4879 | 1207 | kfree(mos7840_port->write_urb->transfer_buffer); |
3f542974 PS |
1208 | usb_free_urb(mos7840_port->write_urb); |
1209 | } | |
1210 | ||
1211 | Data = 0x0; | |
1212 | mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, Data); | |
1213 | ||
1214 | Data = 0x00; | |
1215 | mos7840_set_uart_reg(port, INTERRUPT_ENABLE_REGISTER, Data); | |
1216 | ||
1217 | mos7840_port->open = 0; | |
3f542974 PS |
1218 | } |
1219 | ||
3f542974 PS |
1220 | /***************************************************************************** |
1221 | * mos7840_break | |
1222 | * this function sends a break to the port | |
1223 | *****************************************************************************/ | |
95da310e | 1224 | static void mos7840_break(struct tty_struct *tty, int break_state) |
3f542974 | 1225 | { |
95da310e | 1226 | struct usb_serial_port *port = tty->driver_data; |
3f542974 PS |
1227 | unsigned char data; |
1228 | struct usb_serial *serial; | |
1229 | struct moschip_port *mos7840_port; | |
1230 | ||
9c134a14 | 1231 | if (mos7840_port_paranoia_check(port, __func__)) |
3f542974 | 1232 | return; |
3f542974 | 1233 | |
441b62c1 | 1234 | serial = mos7840_get_usb_serial(port, __func__); |
9c134a14 | 1235 | if (!serial) |
3f542974 | 1236 | return; |
3f542974 PS |
1237 | |
1238 | mos7840_port = mos7840_get_port_private(port); | |
1239 | ||
880af9db | 1240 | if (mos7840_port == NULL) |
3f542974 | 1241 | return; |
3f542974 | 1242 | |
95da310e | 1243 | if (break_state == -1) |
3f542974 | 1244 | data = mos7840_port->shadowLCR | LCR_SET_BREAK; |
95da310e | 1245 | else |
3f542974 | 1246 | data = mos7840_port->shadowLCR & ~LCR_SET_BREAK; |
3f542974 | 1247 | |
6b447f04 | 1248 | /* FIXME: no locking on shadowLCR anywhere in driver */ |
3f542974 | 1249 | mos7840_port->shadowLCR = data; |
9c134a14 | 1250 | dev_dbg(&port->dev, "%s mos7840_port->shadowLCR is %x\n", __func__, mos7840_port->shadowLCR); |
3f542974 PS |
1251 | mos7840_set_uart_reg(port, LINE_CONTROL_REGISTER, |
1252 | mos7840_port->shadowLCR); | |
3f542974 PS |
1253 | } |
1254 | ||
1255 | /***************************************************************************** | |
1256 | * mos7840_write_room | |
1257 | * this function is called by the tty driver when it wants to know how many | |
1258 | * bytes of data we can accept for a specific port. | |
1259 | * If successful, we return the amount of room that we have for this port | |
1260 | * Otherwise we return a negative error number. | |
1261 | *****************************************************************************/ | |
1262 | ||
95da310e | 1263 | static int mos7840_write_room(struct tty_struct *tty) |
3f542974 | 1264 | { |
95da310e | 1265 | struct usb_serial_port *port = tty->driver_data; |
3f542974 PS |
1266 | int i; |
1267 | int room = 0; | |
0de9a702 | 1268 | unsigned long flags; |
3f542974 PS |
1269 | struct moschip_port *mos7840_port; |
1270 | ||
9c134a14 | 1271 | if (mos7840_port_paranoia_check(port, __func__)) |
3f542974 | 1272 | return -1; |
3f542974 PS |
1273 | |
1274 | mos7840_port = mos7840_get_port_private(port); | |
9c134a14 | 1275 | if (mos7840_port == NULL) |
3f542974 | 1276 | return -1; |
3f542974 | 1277 | |
0de9a702 | 1278 | spin_lock_irqsave(&mos7840_port->pool_lock, flags); |
3f542974 | 1279 | for (i = 0; i < NUM_URBS; ++i) { |
880af9db | 1280 | if (!mos7840_port->busy[i]) |
3f542974 | 1281 | room += URB_TRANSFER_BUFFER_SIZE; |
3f542974 | 1282 | } |
0de9a702 | 1283 | spin_unlock_irqrestore(&mos7840_port->pool_lock, flags); |
3f542974 | 1284 | |
0de9a702 | 1285 | room = (room == 0) ? 0 : room - URB_TRANSFER_BUFFER_SIZE + 1; |
9c134a14 | 1286 | dev_dbg(&mos7840_port->port->dev, "%s - returns %d\n", __func__, room); |
0de9a702 | 1287 | return room; |
3f542974 PS |
1288 | |
1289 | } | |
1290 | ||
1291 | /***************************************************************************** | |
1292 | * mos7840_write | |
1293 | * this function is called by the tty driver when data should be written to | |
1294 | * the port. | |
1295 | * If successful, we return the number of bytes written, otherwise we | |
1296 | * return a negative error number. | |
1297 | *****************************************************************************/ | |
1298 | ||
95da310e | 1299 | static int mos7840_write(struct tty_struct *tty, struct usb_serial_port *port, |
3f542974 PS |
1300 | const unsigned char *data, int count) |
1301 | { | |
1302 | int status; | |
1303 | int i; | |
1304 | int bytes_sent = 0; | |
1305 | int transfer_size; | |
0de9a702 | 1306 | unsigned long flags; |
3f542974 PS |
1307 | |
1308 | struct moschip_port *mos7840_port; | |
1309 | struct usb_serial *serial; | |
1310 | struct urb *urb; | |
880af9db | 1311 | /* __u16 Data; */ |
3f542974 PS |
1312 | const unsigned char *current_position = data; |
1313 | unsigned char *data1; | |
3f542974 PS |
1314 | |
1315 | #ifdef NOTMOS7840 | |
1316 | Data = 0x00; | |
3f542974 PS |
1317 | status = mos7840_get_uart_reg(port, LINE_CONTROL_REGISTER, &Data); |
1318 | mos7840_port->shadowLCR = Data; | |
9c134a14 GKH |
1319 | dev_dbg(&port->dev, "%s: LINE_CONTROL_REGISTER is %x\n", __func__, Data); |
1320 | dev_dbg(&port->dev, "%s: mos7840_port->shadowLCR is %x\n", __func__, mos7840_port->shadowLCR); | |
3f542974 | 1321 | |
880af9db AC |
1322 | /* Data = 0x03; */ |
1323 | /* status = mos7840_set_uart_reg(port,LINE_CONTROL_REGISTER,Data); */ | |
1324 | /* mos7840_port->shadowLCR=Data;//Need to add later */ | |
3f542974 | 1325 | |
880af9db | 1326 | Data |= SERIAL_LCR_DLAB; /* data latch enable in LCR 0x80 */ |
3f542974 PS |
1327 | status = mos7840_set_uart_reg(port, LINE_CONTROL_REGISTER, Data); |
1328 | ||
880af9db AC |
1329 | /* Data = 0x0c; */ |
1330 | /* status = mos7840_set_uart_reg(port,DIVISOR_LATCH_LSB,Data); */ | |
3f542974 | 1331 | Data = 0x00; |
3f542974 | 1332 | status = mos7840_get_uart_reg(port, DIVISOR_LATCH_LSB, &Data); |
9c134a14 | 1333 | dev_dbg(&port->dev, "%s: DLL value is %x\n", __func__, Data); |
3f542974 PS |
1334 | |
1335 | Data = 0x0; | |
3f542974 | 1336 | status = mos7840_get_uart_reg(port, DIVISOR_LATCH_MSB, &Data); |
9c134a14 | 1337 | dev_dbg(&port->dev, "%s: DLM value is %x\n", __func__, Data); |
3f542974 PS |
1338 | |
1339 | Data = Data & ~SERIAL_LCR_DLAB; | |
9c134a14 | 1340 | dev_dbg(&port->dev, "%s: mos7840_port->shadowLCR is %x\n", __func__, mos7840_port->shadowLCR); |
3f542974 PS |
1341 | status = mos7840_set_uart_reg(port, LINE_CONTROL_REGISTER, Data); |
1342 | #endif | |
1343 | ||
9c134a14 | 1344 | if (mos7840_port_paranoia_check(port, __func__)) |
3f542974 | 1345 | return -1; |
3f542974 PS |
1346 | |
1347 | serial = port->serial; | |
9c134a14 | 1348 | if (mos7840_serial_paranoia_check(serial, __func__)) |
3f542974 | 1349 | return -1; |
3f542974 PS |
1350 | |
1351 | mos7840_port = mos7840_get_port_private(port); | |
9c134a14 | 1352 | if (mos7840_port == NULL) |
3f542974 | 1353 | return -1; |
3f542974 PS |
1354 | |
1355 | /* try to find a free urb in the list */ | |
1356 | urb = NULL; | |
1357 | ||
0de9a702 | 1358 | spin_lock_irqsave(&mos7840_port->pool_lock, flags); |
3f542974 | 1359 | for (i = 0; i < NUM_URBS; ++i) { |
0de9a702 ON |
1360 | if (!mos7840_port->busy[i]) { |
1361 | mos7840_port->busy[i] = 1; | |
3f542974 | 1362 | urb = mos7840_port->write_urb_pool[i]; |
9c134a14 | 1363 | dev_dbg(&port->dev, "URB:%d\n", i); |
3f542974 PS |
1364 | break; |
1365 | } | |
1366 | } | |
0de9a702 | 1367 | spin_unlock_irqrestore(&mos7840_port->pool_lock, flags); |
3f542974 PS |
1368 | |
1369 | if (urb == NULL) { | |
9c134a14 | 1370 | dev_dbg(&port->dev, "%s - no more free urbs\n", __func__); |
3f542974 PS |
1371 | goto exit; |
1372 | } | |
1373 | ||
1374 | if (urb->transfer_buffer == NULL) { | |
a2417849 AK |
1375 | urb->transfer_buffer = kmalloc(URB_TRANSFER_BUFFER_SIZE, |
1376 | GFP_ATOMIC); | |
10c642d0 | 1377 | if (!urb->transfer_buffer) |
3f542974 | 1378 | goto exit; |
3f542974 PS |
1379 | } |
1380 | transfer_size = min(count, URB_TRANSFER_BUFFER_SIZE); | |
1381 | ||
97c4965d | 1382 | memcpy(urb->transfer_buffer, current_position, transfer_size); |
3f542974 PS |
1383 | |
1384 | /* fill urb with data and submit */ | |
1143832e | 1385 | if ((serial->num_ports == 2) && (((__u16)port->port_number % 2) != 0)) { |
093ea2d3 DL |
1386 | usb_fill_bulk_urb(urb, |
1387 | serial->dev, | |
1388 | usb_sndbulkpipe(serial->dev, | |
1389 | (port->bulk_out_endpointAddress) + 2), | |
1390 | urb->transfer_buffer, | |
1391 | transfer_size, | |
1392 | mos7840_bulk_out_data_callback, mos7840_port); | |
1393 | } else { | |
1394 | usb_fill_bulk_urb(urb, | |
1395 | serial->dev, | |
1396 | usb_sndbulkpipe(serial->dev, | |
1397 | port->bulk_out_endpointAddress), | |
1398 | urb->transfer_buffer, | |
1399 | transfer_size, | |
1400 | mos7840_bulk_out_data_callback, mos7840_port); | |
1401 | } | |
3f542974 PS |
1402 | |
1403 | data1 = urb->transfer_buffer; | |
9c134a14 | 1404 | dev_dbg(&port->dev, "bulkout endpoint is %d\n", port->bulk_out_endpointAddress); |
3f542974 | 1405 | |
05cf0dec JH |
1406 | if (mos7840_port->has_led) |
1407 | mos7840_led_activity(port); | |
0eafe4de | 1408 | |
3f542974 PS |
1409 | /* send it down the pipe */ |
1410 | status = usb_submit_urb(urb, GFP_ATOMIC); | |
1411 | ||
1412 | if (status) { | |
0de9a702 | 1413 | mos7840_port->busy[i] = 0; |
22a416c4 | 1414 | dev_err_console(port, "%s - usb_submit_urb(write bulk) failed " |
194343d9 | 1415 | "with status = %d\n", __func__, status); |
3f542974 PS |
1416 | bytes_sent = status; |
1417 | goto exit; | |
1418 | } | |
1419 | bytes_sent = transfer_size; | |
8c1a07ff JH |
1420 | port->icount.tx += transfer_size; |
1421 | dev_dbg(&port->dev, "icount.tx is %d:\n", port->icount.tx); | |
95da310e | 1422 | exit: |
3f542974 PS |
1423 | return bytes_sent; |
1424 | ||
1425 | } | |
1426 | ||
1427 | /***************************************************************************** | |
1428 | * mos7840_throttle | |
1429 | * this function is called by the tty driver when it wants to stop the data | |
1430 | * being read from the port. | |
1431 | *****************************************************************************/ | |
1432 | ||
95da310e | 1433 | static void mos7840_throttle(struct tty_struct *tty) |
3f542974 | 1434 | { |
95da310e | 1435 | struct usb_serial_port *port = tty->driver_data; |
3f542974 | 1436 | struct moschip_port *mos7840_port; |
3f542974 PS |
1437 | int status; |
1438 | ||
9c134a14 | 1439 | if (mos7840_port_paranoia_check(port, __func__)) |
3f542974 | 1440 | return; |
3f542974 PS |
1441 | |
1442 | mos7840_port = mos7840_get_port_private(port); | |
1443 | ||
1444 | if (mos7840_port == NULL) | |
1445 | return; | |
1446 | ||
1447 | if (!mos7840_port->open) { | |
9c134a14 | 1448 | dev_dbg(&port->dev, "%s", "port not opened\n"); |
3f542974 PS |
1449 | return; |
1450 | } | |
1451 | ||
3f542974 PS |
1452 | /* if we are implementing XON/XOFF, send the stop character */ |
1453 | if (I_IXOFF(tty)) { | |
1454 | unsigned char stop_char = STOP_CHAR(tty); | |
95da310e AC |
1455 | status = mos7840_write(tty, port, &stop_char, 1); |
1456 | if (status <= 0) | |
3f542974 | 1457 | return; |
3f542974 | 1458 | } |
3f542974 | 1459 | /* if we are implementing RTS/CTS, toggle that line */ |
adc8d746 | 1460 | if (tty->termios.c_cflag & CRTSCTS) { |
3f542974 | 1461 | mos7840_port->shadowMCR &= ~MCR_RTS; |
95da310e | 1462 | status = mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, |
3f542974 | 1463 | mos7840_port->shadowMCR); |
95da310e | 1464 | if (status < 0) |
3f542974 | 1465 | return; |
3f542974 | 1466 | } |
3f542974 PS |
1467 | } |
1468 | ||
1469 | /***************************************************************************** | |
1470 | * mos7840_unthrottle | |
880af9db AC |
1471 | * this function is called by the tty driver when it wants to resume |
1472 | * the data being read from the port (called after mos7840_throttle is | |
1473 | * called) | |
3f542974 | 1474 | *****************************************************************************/ |
95da310e | 1475 | static void mos7840_unthrottle(struct tty_struct *tty) |
3f542974 | 1476 | { |
95da310e | 1477 | struct usb_serial_port *port = tty->driver_data; |
3f542974 PS |
1478 | int status; |
1479 | struct moschip_port *mos7840_port = mos7840_get_port_private(port); | |
1480 | ||
9c134a14 | 1481 | if (mos7840_port_paranoia_check(port, __func__)) |
3f542974 | 1482 | return; |
3f542974 PS |
1483 | |
1484 | if (mos7840_port == NULL) | |
1485 | return; | |
1486 | ||
1487 | if (!mos7840_port->open) { | |
9c134a14 | 1488 | dev_dbg(&port->dev, "%s - port not opened\n", __func__); |
3f542974 PS |
1489 | return; |
1490 | } | |
1491 | ||
3f542974 PS |
1492 | /* if we are implementing XON/XOFF, send the start character */ |
1493 | if (I_IXOFF(tty)) { | |
1494 | unsigned char start_char = START_CHAR(tty); | |
95da310e AC |
1495 | status = mos7840_write(tty, port, &start_char, 1); |
1496 | if (status <= 0) | |
3f542974 | 1497 | return; |
3f542974 PS |
1498 | } |
1499 | ||
1500 | /* if we are implementing RTS/CTS, toggle that line */ | |
adc8d746 | 1501 | if (tty->termios.c_cflag & CRTSCTS) { |
3f542974 | 1502 | mos7840_port->shadowMCR |= MCR_RTS; |
95da310e | 1503 | status = mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, |
3f542974 | 1504 | mos7840_port->shadowMCR); |
95da310e | 1505 | if (status < 0) |
3f542974 | 1506 | return; |
3f542974 | 1507 | } |
3f542974 PS |
1508 | } |
1509 | ||
60b33c13 | 1510 | static int mos7840_tiocmget(struct tty_struct *tty) |
3f542974 | 1511 | { |
95da310e | 1512 | struct usb_serial_port *port = tty->driver_data; |
3f542974 PS |
1513 | struct moschip_port *mos7840_port; |
1514 | unsigned int result; | |
1515 | __u16 msr; | |
1516 | __u16 mcr; | |
880af9db | 1517 | int status; |
3f542974 PS |
1518 | mos7840_port = mos7840_get_port_private(port); |
1519 | ||
3f542974 PS |
1520 | if (mos7840_port == NULL) |
1521 | return -ENODEV; | |
1522 | ||
1523 | status = mos7840_get_uart_reg(port, MODEM_STATUS_REGISTER, &msr); | |
a91ccd26 JH |
1524 | if (status != 1) |
1525 | return -EIO; | |
3f542974 | 1526 | status = mos7840_get_uart_reg(port, MODEM_CONTROL_REGISTER, &mcr); |
a91ccd26 JH |
1527 | if (status != 1) |
1528 | return -EIO; | |
3f542974 PS |
1529 | result = ((mcr & MCR_DTR) ? TIOCM_DTR : 0) |
1530 | | ((mcr & MCR_RTS) ? TIOCM_RTS : 0) | |
1531 | | ((mcr & MCR_LOOPBACK) ? TIOCM_LOOP : 0) | |
1532 | | ((msr & MOS7840_MSR_CTS) ? TIOCM_CTS : 0) | |
1533 | | ((msr & MOS7840_MSR_CD) ? TIOCM_CAR : 0) | |
1534 | | ((msr & MOS7840_MSR_RI) ? TIOCM_RI : 0) | |
1535 | | ((msr & MOS7840_MSR_DSR) ? TIOCM_DSR : 0); | |
1536 | ||
9c134a14 | 1537 | dev_dbg(&port->dev, "%s - 0x%04X\n", __func__, result); |
3f542974 PS |
1538 | |
1539 | return result; | |
1540 | } | |
1541 | ||
20b9d177 | 1542 | static int mos7840_tiocmset(struct tty_struct *tty, |
3f542974 PS |
1543 | unsigned int set, unsigned int clear) |
1544 | { | |
95da310e | 1545 | struct usb_serial_port *port = tty->driver_data; |
3f542974 PS |
1546 | struct moschip_port *mos7840_port; |
1547 | unsigned int mcr; | |
87521c46 | 1548 | int status; |
3f542974 | 1549 | |
3f542974 PS |
1550 | mos7840_port = mos7840_get_port_private(port); |
1551 | ||
1552 | if (mos7840_port == NULL) | |
1553 | return -ENODEV; | |
1554 | ||
e2984494 | 1555 | /* FIXME: What locks the port registers ? */ |
3f542974 PS |
1556 | mcr = mos7840_port->shadowMCR; |
1557 | if (clear & TIOCM_RTS) | |
1558 | mcr &= ~MCR_RTS; | |
1559 | if (clear & TIOCM_DTR) | |
1560 | mcr &= ~MCR_DTR; | |
1561 | if (clear & TIOCM_LOOP) | |
1562 | mcr &= ~MCR_LOOPBACK; | |
1563 | ||
1564 | if (set & TIOCM_RTS) | |
1565 | mcr |= MCR_RTS; | |
1566 | if (set & TIOCM_DTR) | |
1567 | mcr |= MCR_DTR; | |
1568 | if (set & TIOCM_LOOP) | |
1569 | mcr |= MCR_LOOPBACK; | |
1570 | ||
1571 | mos7840_port->shadowMCR = mcr; | |
1572 | ||
3f542974 PS |
1573 | status = mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, mcr); |
1574 | if (status < 0) { | |
9c134a14 | 1575 | dev_dbg(&port->dev, "setting MODEM_CONTROL_REGISTER Failed\n"); |
87521c46 | 1576 | return status; |
3f542974 PS |
1577 | } |
1578 | ||
1579 | return 0; | |
1580 | } | |
1581 | ||
1582 | /***************************************************************************** | |
1583 | * mos7840_calc_baud_rate_divisor | |
1584 | * this function calculates the proper baud rate divisor for the specified | |
1585 | * baud rate. | |
1586 | *****************************************************************************/ | |
9c134a14 GKH |
1587 | static int mos7840_calc_baud_rate_divisor(struct usb_serial_port *port, |
1588 | int baudRate, int *divisor, | |
880af9db | 1589 | __u16 *clk_sel_val) |
3f542974 | 1590 | { |
9c134a14 | 1591 | dev_dbg(&port->dev, "%s - %d\n", __func__, baudRate); |
3f542974 PS |
1592 | |
1593 | if (baudRate <= 115200) { | |
1594 | *divisor = 115200 / baudRate; | |
1595 | *clk_sel_val = 0x0; | |
1596 | } | |
1597 | if ((baudRate > 115200) && (baudRate <= 230400)) { | |
1598 | *divisor = 230400 / baudRate; | |
1599 | *clk_sel_val = 0x10; | |
1600 | } else if ((baudRate > 230400) && (baudRate <= 403200)) { | |
1601 | *divisor = 403200 / baudRate; | |
1602 | *clk_sel_val = 0x20; | |
1603 | } else if ((baudRate > 403200) && (baudRate <= 460800)) { | |
1604 | *divisor = 460800 / baudRate; | |
1605 | *clk_sel_val = 0x30; | |
1606 | } else if ((baudRate > 460800) && (baudRate <= 806400)) { | |
1607 | *divisor = 806400 / baudRate; | |
1608 | *clk_sel_val = 0x40; | |
1609 | } else if ((baudRate > 806400) && (baudRate <= 921600)) { | |
1610 | *divisor = 921600 / baudRate; | |
1611 | *clk_sel_val = 0x50; | |
1612 | } else if ((baudRate > 921600) && (baudRate <= 1572864)) { | |
1613 | *divisor = 1572864 / baudRate; | |
1614 | *clk_sel_val = 0x60; | |
1615 | } else if ((baudRate > 1572864) && (baudRate <= 3145728)) { | |
1616 | *divisor = 3145728 / baudRate; | |
1617 | *clk_sel_val = 0x70; | |
1618 | } | |
1619 | return 0; | |
1620 | ||
1621 | #ifdef NOTMCS7840 | |
1622 | ||
1623 | for (i = 0; i < ARRAY_SIZE(mos7840_divisor_table); i++) { | |
1624 | if (mos7840_divisor_table[i].BaudRate == baudrate) { | |
1625 | *divisor = mos7840_divisor_table[i].Divisor; | |
1626 | return 0; | |
1627 | } | |
1628 | } | |
1629 | ||
1630 | /* After trying for all the standard baud rates * | |
1631 | * Try calculating the divisor for this baud rate */ | |
1632 | ||
1633 | if (baudrate > 75 && baudrate < 230400) { | |
1634 | /* get the divisor */ | |
1635 | custom = (__u16) (230400L / baudrate); | |
1636 | ||
1637 | /* Check for round off */ | |
1638 | round1 = (__u16) (2304000L / baudrate); | |
1639 | round = (__u16) (round1 - (custom * 10)); | |
880af9db | 1640 | if (round > 4) |
3f542974 | 1641 | custom++; |
3f542974 PS |
1642 | *divisor = custom; |
1643 | ||
9c134a14 | 1644 | dev_dbg(&port->dev, " Baud %d = %d\n", baudrate, custom); |
3f542974 PS |
1645 | return 0; |
1646 | } | |
1647 | ||
9c134a14 | 1648 | dev_dbg(&port->dev, "%s", " Baud calculation Failed...\n"); |
3f542974 PS |
1649 | return -1; |
1650 | #endif | |
1651 | } | |
1652 | ||
1653 | /***************************************************************************** | |
1654 | * mos7840_send_cmd_write_baud_rate | |
1655 | * this function sends the proper command to change the baud rate of the | |
1656 | * specified port. | |
1657 | *****************************************************************************/ | |
1658 | ||
1659 | static int mos7840_send_cmd_write_baud_rate(struct moschip_port *mos7840_port, | |
1660 | int baudRate) | |
1661 | { | |
1662 | int divisor = 0; | |
1663 | int status; | |
1664 | __u16 Data; | |
1665 | unsigned char number; | |
1666 | __u16 clk_sel_val; | |
1667 | struct usb_serial_port *port; | |
1668 | ||
1669 | if (mos7840_port == NULL) | |
1670 | return -1; | |
1671 | ||
9c134a14 GKH |
1672 | port = mos7840_port->port; |
1673 | if (mos7840_port_paranoia_check(port, __func__)) | |
3f542974 | 1674 | return -1; |
3f542974 | 1675 | |
9c134a14 | 1676 | if (mos7840_serial_paranoia_check(port->serial, __func__)) |
3f542974 | 1677 | return -1; |
3f542974 | 1678 | |
1143832e | 1679 | number = mos7840_port->port->port_number; |
3f542974 | 1680 | |
1143832e | 1681 | dev_dbg(&port->dev, "%s - baud = %d\n", __func__, baudRate); |
880af9db | 1682 | /* reset clk_uart_sel in spregOffset */ |
3f542974 PS |
1683 | if (baudRate > 115200) { |
1684 | #ifdef HW_flow_control | |
880af9db AC |
1685 | /* NOTE: need to see the pther register to modify */ |
1686 | /* setting h/w flow control bit to 1 */ | |
3f542974 PS |
1687 | Data = 0x2b; |
1688 | mos7840_port->shadowMCR = Data; | |
880af9db AC |
1689 | status = mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, |
1690 | Data); | |
3f542974 | 1691 | if (status < 0) { |
9c134a14 | 1692 | dev_dbg(&port->dev, "Writing spreg failed in set_serial_baud\n"); |
3f542974 PS |
1693 | return -1; |
1694 | } | |
1695 | #endif | |
1696 | ||
1697 | } else { | |
1698 | #ifdef HW_flow_control | |
093ea2d3 | 1699 | /* setting h/w flow control bit to 0 */ |
3f542974 PS |
1700 | Data = 0xb; |
1701 | mos7840_port->shadowMCR = Data; | |
880af9db AC |
1702 | status = mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, |
1703 | Data); | |
3f542974 | 1704 | if (status < 0) { |
9c134a14 | 1705 | dev_dbg(&port->dev, "Writing spreg failed in set_serial_baud\n"); |
3f542974 PS |
1706 | return -1; |
1707 | } | |
1708 | #endif | |
1709 | ||
1710 | } | |
1711 | ||
880af9db | 1712 | if (1) { /* baudRate <= 115200) */ |
3f542974 PS |
1713 | clk_sel_val = 0x0; |
1714 | Data = 0x0; | |
9c134a14 | 1715 | status = mos7840_calc_baud_rate_divisor(port, baudRate, &divisor, |
3f542974 | 1716 | &clk_sel_val); |
880af9db AC |
1717 | status = mos7840_get_reg_sync(port, mos7840_port->SpRegOffset, |
1718 | &Data); | |
3f542974 | 1719 | if (status < 0) { |
9c134a14 | 1720 | dev_dbg(&port->dev, "reading spreg failed in set_serial_baud\n"); |
3f542974 PS |
1721 | return -1; |
1722 | } | |
1723 | Data = (Data & 0x8f) | clk_sel_val; | |
880af9db AC |
1724 | status = mos7840_set_reg_sync(port, mos7840_port->SpRegOffset, |
1725 | Data); | |
3f542974 | 1726 | if (status < 0) { |
9c134a14 | 1727 | dev_dbg(&port->dev, "Writing spreg failed in set_serial_baud\n"); |
3f542974 PS |
1728 | return -1; |
1729 | } | |
1730 | /* Calculate the Divisor */ | |
1731 | ||
1732 | if (status) { | |
194343d9 | 1733 | dev_err(&port->dev, "%s - bad baud rate\n", __func__); |
3f542974 PS |
1734 | return status; |
1735 | } | |
1736 | /* Enable access to divisor latch */ | |
1737 | Data = mos7840_port->shadowLCR | SERIAL_LCR_DLAB; | |
1738 | mos7840_port->shadowLCR = Data; | |
1739 | mos7840_set_uart_reg(port, LINE_CONTROL_REGISTER, Data); | |
1740 | ||
1741 | /* Write the divisor */ | |
1742 | Data = (unsigned char)(divisor & 0xff); | |
9c134a14 | 1743 | dev_dbg(&port->dev, "set_serial_baud Value to write DLL is %x\n", Data); |
3f542974 PS |
1744 | mos7840_set_uart_reg(port, DIVISOR_LATCH_LSB, Data); |
1745 | ||
1746 | Data = (unsigned char)((divisor & 0xff00) >> 8); | |
9c134a14 | 1747 | dev_dbg(&port->dev, "set_serial_baud Value to write DLM is %x\n", Data); |
3f542974 PS |
1748 | mos7840_set_uart_reg(port, DIVISOR_LATCH_MSB, Data); |
1749 | ||
1750 | /* Disable access to divisor latch */ | |
1751 | Data = mos7840_port->shadowLCR & ~SERIAL_LCR_DLAB; | |
1752 | mos7840_port->shadowLCR = Data; | |
1753 | mos7840_set_uart_reg(port, LINE_CONTROL_REGISTER, Data); | |
1754 | ||
1755 | } | |
3f542974 PS |
1756 | return status; |
1757 | } | |
1758 | ||
1759 | /***************************************************************************** | |
1760 | * mos7840_change_port_settings | |
1761 | * This routine is called to set the UART on the device to match | |
1762 | * the specified new settings. | |
1763 | *****************************************************************************/ | |
1764 | ||
95da310e AC |
1765 | static void mos7840_change_port_settings(struct tty_struct *tty, |
1766 | struct moschip_port *mos7840_port, struct ktermios *old_termios) | |
3f542974 | 1767 | { |
3f542974 PS |
1768 | int baud; |
1769 | unsigned cflag; | |
1770 | unsigned iflag; | |
1771 | __u8 lData; | |
1772 | __u8 lParity; | |
1773 | __u8 lStop; | |
1774 | int status; | |
1775 | __u16 Data; | |
1776 | struct usb_serial_port *port; | |
1777 | struct usb_serial *serial; | |
1778 | ||
1779 | if (mos7840_port == NULL) | |
1780 | return; | |
1781 | ||
9c134a14 | 1782 | port = mos7840_port->port; |
3f542974 | 1783 | |
9c134a14 | 1784 | if (mos7840_port_paranoia_check(port, __func__)) |
3f542974 | 1785 | return; |
3f542974 | 1786 | |
9c134a14 | 1787 | if (mos7840_serial_paranoia_check(port->serial, __func__)) |
3f542974 | 1788 | return; |
3f542974 PS |
1789 | |
1790 | serial = port->serial; | |
1791 | ||
3f542974 | 1792 | if (!mos7840_port->open) { |
9c134a14 | 1793 | dev_dbg(&port->dev, "%s - port not opened\n", __func__); |
3f542974 PS |
1794 | return; |
1795 | } | |
1796 | ||
3f542974 PS |
1797 | lData = LCR_BITS_8; |
1798 | lStop = LCR_STOP_1; | |
1799 | lParity = LCR_PAR_NONE; | |
1800 | ||
adc8d746 AC |
1801 | cflag = tty->termios.c_cflag; |
1802 | iflag = tty->termios.c_iflag; | |
3f542974 PS |
1803 | |
1804 | /* Change the number of bits */ | |
78692cc3 CL |
1805 | switch (cflag & CSIZE) { |
1806 | case CS5: | |
1807 | lData = LCR_BITS_5; | |
1808 | break; | |
3f542974 | 1809 | |
78692cc3 CL |
1810 | case CS6: |
1811 | lData = LCR_BITS_6; | |
1812 | break; | |
3f542974 | 1813 | |
78692cc3 CL |
1814 | case CS7: |
1815 | lData = LCR_BITS_7; | |
1816 | break; | |
1817 | ||
1818 | default: | |
1819 | case CS8: | |
1820 | lData = LCR_BITS_8; | |
1821 | break; | |
3f542974 | 1822 | } |
78692cc3 | 1823 | |
3f542974 PS |
1824 | /* Change the Parity bit */ |
1825 | if (cflag & PARENB) { | |
1826 | if (cflag & PARODD) { | |
1827 | lParity = LCR_PAR_ODD; | |
9c134a14 | 1828 | dev_dbg(&port->dev, "%s - parity = odd\n", __func__); |
3f542974 PS |
1829 | } else { |
1830 | lParity = LCR_PAR_EVEN; | |
9c134a14 | 1831 | dev_dbg(&port->dev, "%s - parity = even\n", __func__); |
3f542974 PS |
1832 | } |
1833 | ||
1834 | } else { | |
9c134a14 | 1835 | dev_dbg(&port->dev, "%s - parity = none\n", __func__); |
3f542974 PS |
1836 | } |
1837 | ||
880af9db | 1838 | if (cflag & CMSPAR) |
3f542974 | 1839 | lParity = lParity | 0x20; |
3f542974 PS |
1840 | |
1841 | /* Change the Stop bit */ | |
1842 | if (cflag & CSTOPB) { | |
1843 | lStop = LCR_STOP_2; | |
9c134a14 | 1844 | dev_dbg(&port->dev, "%s - stop bits = 2\n", __func__); |
3f542974 PS |
1845 | } else { |
1846 | lStop = LCR_STOP_1; | |
9c134a14 | 1847 | dev_dbg(&port->dev, "%s - stop bits = 1\n", __func__); |
3f542974 PS |
1848 | } |
1849 | ||
1850 | /* Update the LCR with the correct value */ | |
1851 | mos7840_port->shadowLCR &= | |
1852 | ~(LCR_BITS_MASK | LCR_STOP_MASK | LCR_PAR_MASK); | |
1853 | mos7840_port->shadowLCR |= (lData | lParity | lStop); | |
1854 | ||
9c134a14 GKH |
1855 | dev_dbg(&port->dev, "%s - mos7840_port->shadowLCR is %x\n", __func__, |
1856 | mos7840_port->shadowLCR); | |
3f542974 PS |
1857 | /* Disable Interrupts */ |
1858 | Data = 0x00; | |
1859 | mos7840_set_uart_reg(port, INTERRUPT_ENABLE_REGISTER, Data); | |
1860 | ||
1861 | Data = 0x00; | |
1862 | mos7840_set_uart_reg(port, FIFO_CONTROL_REGISTER, Data); | |
1863 | ||
1864 | Data = 0xcf; | |
1865 | mos7840_set_uart_reg(port, FIFO_CONTROL_REGISTER, Data); | |
1866 | ||
1867 | /* Send the updated LCR value to the mos7840 */ | |
1868 | Data = mos7840_port->shadowLCR; | |
1869 | ||
1870 | mos7840_set_uart_reg(port, LINE_CONTROL_REGISTER, Data); | |
1871 | ||
1872 | Data = 0x00b; | |
1873 | mos7840_port->shadowMCR = Data; | |
1874 | mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, Data); | |
1875 | Data = 0x00b; | |
1876 | mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, Data); | |
1877 | ||
1878 | /* set up the MCR register and send it to the mos7840 */ | |
1879 | ||
1880 | mos7840_port->shadowMCR = MCR_MASTER_IE; | |
880af9db | 1881 | if (cflag & CBAUD) |
3f542974 | 1882 | mos7840_port->shadowMCR |= (MCR_DTR | MCR_RTS); |
3f542974 | 1883 | |
880af9db | 1884 | if (cflag & CRTSCTS) |
3f542974 | 1885 | mos7840_port->shadowMCR |= (MCR_XON_ANY); |
880af9db | 1886 | else |
3f542974 | 1887 | mos7840_port->shadowMCR &= ~(MCR_XON_ANY); |
3f542974 PS |
1888 | |
1889 | Data = mos7840_port->shadowMCR; | |
1890 | mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, Data); | |
1891 | ||
1892 | /* Determine divisor based on baud rate */ | |
1893 | baud = tty_get_baud_rate(tty); | |
1894 | ||
1895 | if (!baud) { | |
1896 | /* pick a default, any default... */ | |
9c134a14 | 1897 | dev_dbg(&port->dev, "%s", "Picked default baud...\n"); |
3f542974 PS |
1898 | baud = 9600; |
1899 | } | |
1900 | ||
9c134a14 | 1901 | dev_dbg(&port->dev, "%s - baud rate = %d\n", __func__, baud); |
3f542974 PS |
1902 | status = mos7840_send_cmd_write_baud_rate(mos7840_port, baud); |
1903 | ||
1904 | /* Enable Interrupts */ | |
1905 | Data = 0x0c; | |
1906 | mos7840_set_uart_reg(port, INTERRUPT_ENABLE_REGISTER, Data); | |
1907 | ||
50de36f7 | 1908 | if (mos7840_port->read_urb_busy == false) { |
50de36f7 | 1909 | mos7840_port->read_urb_busy = true; |
3f542974 | 1910 | status = usb_submit_urb(mos7840_port->read_urb, GFP_ATOMIC); |
3f542974 | 1911 | if (status) { |
9c134a14 | 1912 | dev_dbg(&port->dev, "usb_submit_urb(read bulk) failed, status = %d\n", |
3f542974 | 1913 | status); |
50de36f7 | 1914 | mos7840_port->read_urb_busy = false; |
3f542974 PS |
1915 | } |
1916 | } | |
9c134a14 GKH |
1917 | dev_dbg(&port->dev, "%s - mos7840_port->shadowLCR is End %x\n", __func__, |
1918 | mos7840_port->shadowLCR); | |
3f542974 PS |
1919 | } |
1920 | ||
1921 | /***************************************************************************** | |
1922 | * mos7840_set_termios | |
1923 | * this function is called by the tty driver when it wants to change | |
1924 | * the termios structure | |
1925 | *****************************************************************************/ | |
1926 | ||
95da310e AC |
1927 | static void mos7840_set_termios(struct tty_struct *tty, |
1928 | struct usb_serial_port *port, | |
606d099c | 1929 | struct ktermios *old_termios) |
3f542974 PS |
1930 | { |
1931 | int status; | |
1932 | unsigned int cflag; | |
1933 | struct usb_serial *serial; | |
1934 | struct moschip_port *mos7840_port; | |
3363155b | 1935 | |
9c134a14 | 1936 | if (mos7840_port_paranoia_check(port, __func__)) |
3f542974 | 1937 | return; |
3f542974 PS |
1938 | |
1939 | serial = port->serial; | |
1940 | ||
9c134a14 | 1941 | if (mos7840_serial_paranoia_check(serial, __func__)) |
3f542974 | 1942 | return; |
3f542974 PS |
1943 | |
1944 | mos7840_port = mos7840_get_port_private(port); | |
1945 | ||
1946 | if (mos7840_port == NULL) | |
1947 | return; | |
1948 | ||
3f542974 | 1949 | if (!mos7840_port->open) { |
9c134a14 | 1950 | dev_dbg(&port->dev, "%s - port not opened\n", __func__); |
3f542974 PS |
1951 | return; |
1952 | } | |
1953 | ||
9c134a14 | 1954 | dev_dbg(&port->dev, "%s", "setting termios - \n"); |
3f542974 | 1955 | |
adc8d746 | 1956 | cflag = tty->termios.c_cflag; |
3f542974 | 1957 | |
9c134a14 | 1958 | dev_dbg(&port->dev, "%s - clfag %08x iflag %08x\n", __func__, |
d9a80746 | 1959 | tty->termios.c_cflag, RELEVANT_IFLAG(tty->termios.c_iflag)); |
9c134a14 GKH |
1960 | dev_dbg(&port->dev, "%s - old clfag %08x old iflag %08x\n", __func__, |
1961 | old_termios->c_cflag, RELEVANT_IFLAG(old_termios->c_iflag)); | |
3f542974 PS |
1962 | |
1963 | /* change the port settings to the new ones specified */ | |
1964 | ||
95da310e | 1965 | mos7840_change_port_settings(tty, mos7840_port, old_termios); |
3f542974 PS |
1966 | |
1967 | if (!mos7840_port->read_urb) { | |
9c134a14 | 1968 | dev_dbg(&port->dev, "%s", "URB KILLED !!!!!\n"); |
3f542974 PS |
1969 | return; |
1970 | } | |
1971 | ||
50de36f7 | 1972 | if (mos7840_port->read_urb_busy == false) { |
50de36f7 | 1973 | mos7840_port->read_urb_busy = true; |
3f542974 PS |
1974 | status = usb_submit_urb(mos7840_port->read_urb, GFP_ATOMIC); |
1975 | if (status) { | |
9c134a14 | 1976 | dev_dbg(&port->dev, "usb_submit_urb(read bulk) failed, status = %d\n", |
3f542974 | 1977 | status); |
50de36f7 | 1978 | mos7840_port->read_urb_busy = false; |
3f542974 PS |
1979 | } |
1980 | } | |
3f542974 PS |
1981 | } |
1982 | ||
1983 | /***************************************************************************** | |
1984 | * mos7840_get_lsr_info - get line status register info | |
1985 | * | |
1986 | * Purpose: Let user call ioctl() to get info when the UART physically | |
1987 | * is emptied. On bus types like RS485, the transmitter must | |
1988 | * release the bus after transmitting. This must be done when | |
1989 | * the transmit shift register is empty, not be done when the | |
1990 | * transmit holding register is empty. This functionality | |
1991 | * allows an RS485 driver to be written in user space. | |
1992 | *****************************************************************************/ | |
1993 | ||
95da310e | 1994 | static int mos7840_get_lsr_info(struct tty_struct *tty, |
97c4965d | 1995 | unsigned int __user *value) |
3f542974 PS |
1996 | { |
1997 | int count; | |
1998 | unsigned int result = 0; | |
1999 | ||
95da310e | 2000 | count = mos7840_chars_in_buffer(tty); |
9c134a14 | 2001 | if (count == 0) |
3f542974 | 2002 | result = TIOCSER_TEMT; |
3f542974 PS |
2003 | |
2004 | if (copy_to_user(value, &result, sizeof(int))) | |
2005 | return -EFAULT; | |
2006 | return 0; | |
2007 | } | |
2008 | ||
3f542974 PS |
2009 | /***************************************************************************** |
2010 | * mos7840_get_serial_info | |
2011 | * function to get information about serial port | |
2012 | *****************************************************************************/ | |
2013 | ||
2014 | static int mos7840_get_serial_info(struct moschip_port *mos7840_port, | |
97c4965d | 2015 | struct serial_struct __user *retinfo) |
3f542974 PS |
2016 | { |
2017 | struct serial_struct tmp; | |
2018 | ||
2019 | if (mos7840_port == NULL) | |
2020 | return -1; | |
2021 | ||
2022 | if (!retinfo) | |
2023 | return -EFAULT; | |
2024 | ||
2025 | memset(&tmp, 0, sizeof(tmp)); | |
2026 | ||
2027 | tmp.type = PORT_16550A; | |
e5b1e206 | 2028 | tmp.line = mos7840_port->port->minor; |
1143832e | 2029 | tmp.port = mos7840_port->port->port_number; |
3f542974 PS |
2030 | tmp.irq = 0; |
2031 | tmp.flags = ASYNC_SKIP_TEST | ASYNC_AUTO_IRQ; | |
2032 | tmp.xmit_fifo_size = NUM_URBS * URB_TRANSFER_BUFFER_SIZE; | |
2033 | tmp.baud_base = 9600; | |
2034 | tmp.close_delay = 5 * HZ; | |
2035 | tmp.closing_wait = 30 * HZ; | |
2036 | ||
2037 | if (copy_to_user(retinfo, &tmp, sizeof(*retinfo))) | |
2038 | return -EFAULT; | |
2039 | return 0; | |
2040 | } | |
2041 | ||
2042 | /***************************************************************************** | |
2043 | * SerialIoctl | |
2044 | * this function handles any ioctl calls to the driver | |
2045 | *****************************************************************************/ | |
2046 | ||
00a0d0d6 | 2047 | static int mos7840_ioctl(struct tty_struct *tty, |
3f542974 PS |
2048 | unsigned int cmd, unsigned long arg) |
2049 | { | |
95da310e | 2050 | struct usb_serial_port *port = tty->driver_data; |
97c4965d | 2051 | void __user *argp = (void __user *)arg; |
3f542974 | 2052 | struct moschip_port *mos7840_port; |
3f542974 | 2053 | |
9c134a14 | 2054 | if (mos7840_port_paranoia_check(port, __func__)) |
3f542974 | 2055 | return -1; |
3f542974 PS |
2056 | |
2057 | mos7840_port = mos7840_get_port_private(port); | |
3f542974 PS |
2058 | |
2059 | if (mos7840_port == NULL) | |
2060 | return -1; | |
2061 | ||
3f542974 PS |
2062 | switch (cmd) { |
2063 | /* return number of bytes available */ | |
2064 | ||
3f542974 | 2065 | case TIOCSERGETLSR: |
9c134a14 | 2066 | dev_dbg(&port->dev, "%s TIOCSERGETLSR\n", __func__); |
95da310e | 2067 | return mos7840_get_lsr_info(tty, argp); |
3f542974 | 2068 | |
3f542974 | 2069 | case TIOCGSERIAL: |
9c134a14 | 2070 | dev_dbg(&port->dev, "%s TIOCGSERIAL\n", __func__); |
97c4965d | 2071 | return mos7840_get_serial_info(mos7840_port, argp); |
3f542974 PS |
2072 | |
2073 | case TIOCSSERIAL: | |
9c134a14 | 2074 | dev_dbg(&port->dev, "%s TIOCSSERIAL\n", __func__); |
3f542974 | 2075 | break; |
3f542974 PS |
2076 | default: |
2077 | break; | |
2078 | } | |
3f542974 PS |
2079 | return -ENOIOCTLCMD; |
2080 | } | |
2081 | ||
0eafe4de D |
2082 | static int mos7810_check(struct usb_serial *serial) |
2083 | { | |
2084 | int i, pass_count = 0; | |
15ee89c3 | 2085 | u8 *buf; |
0eafe4de D |
2086 | __u16 data = 0, mcr_data = 0; |
2087 | __u16 test_pattern = 0x55AA; | |
15ee89c3 JH |
2088 | int res; |
2089 | ||
2090 | buf = kmalloc(VENDOR_READ_LENGTH, GFP_KERNEL); | |
2091 | if (!buf) | |
2092 | return 0; /* failed to identify 7810 */ | |
0eafe4de D |
2093 | |
2094 | /* Store MCR setting */ | |
15ee89c3 | 2095 | res = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), |
0eafe4de | 2096 | MCS_RDREQ, MCS_RD_RTYPE, 0x0300, MODEM_CONTROL_REGISTER, |
15ee89c3 JH |
2097 | buf, VENDOR_READ_LENGTH, MOS_WDR_TIMEOUT); |
2098 | if (res == VENDOR_READ_LENGTH) | |
2099 | mcr_data = *buf; | |
0eafe4de D |
2100 | |
2101 | for (i = 0; i < 16; i++) { | |
2102 | /* Send the 1-bit test pattern out to MCS7810 test pin */ | |
2103 | usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), | |
2104 | MCS_WRREQ, MCS_WR_RTYPE, | |
2105 | (0x0300 | (((test_pattern >> i) & 0x0001) << 1)), | |
2106 | MODEM_CONTROL_REGISTER, NULL, 0, MOS_WDR_TIMEOUT); | |
2107 | ||
2108 | /* Read the test pattern back */ | |
15ee89c3 JH |
2109 | res = usb_control_msg(serial->dev, |
2110 | usb_rcvctrlpipe(serial->dev, 0), MCS_RDREQ, | |
2111 | MCS_RD_RTYPE, 0, GPIO_REGISTER, buf, | |
2112 | VENDOR_READ_LENGTH, MOS_WDR_TIMEOUT); | |
2113 | if (res == VENDOR_READ_LENGTH) | |
2114 | data = *buf; | |
0eafe4de D |
2115 | |
2116 | /* If this is a MCS7810 device, both test patterns must match */ | |
2117 | if (((test_pattern >> i) ^ (~data >> 1)) & 0x0001) | |
2118 | break; | |
2119 | ||
2120 | pass_count++; | |
2121 | } | |
2122 | ||
2123 | /* Restore MCR setting */ | |
2124 | usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), MCS_WRREQ, | |
2125 | MCS_WR_RTYPE, 0x0300 | mcr_data, MODEM_CONTROL_REGISTER, NULL, | |
2126 | 0, MOS_WDR_TIMEOUT); | |
2127 | ||
15ee89c3 JH |
2128 | kfree(buf); |
2129 | ||
0eafe4de D |
2130 | if (pass_count == 16) |
2131 | return 1; | |
2132 | ||
2133 | return 0; | |
2134 | } | |
2135 | ||
40c24f28 JH |
2136 | static int mos7840_probe(struct usb_serial *serial, |
2137 | const struct usb_device_id *id) | |
3f542974 | 2138 | { |
d551ec9b | 2139 | u16 product = le16_to_cpu(serial->dev->descriptor.idProduct); |
15ee89c3 | 2140 | u8 *buf; |
40c24f28 JH |
2141 | int device_type; |
2142 | ||
2143 | if (product == MOSCHIP_DEVICE_ID_7810 || | |
2144 | product == MOSCHIP_DEVICE_ID_7820) { | |
2145 | device_type = product; | |
2146 | goto out; | |
2147 | } | |
093ea2d3 | 2148 | |
15ee89c3 | 2149 | buf = kzalloc(VENDOR_READ_LENGTH, GFP_KERNEL); |
40c24f28 JH |
2150 | if (!buf) |
2151 | return -ENOMEM; | |
2152 | ||
2153 | usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), | |
15ee89c3 JH |
2154 | MCS_RDREQ, MCS_RD_RTYPE, 0, GPIO_REGISTER, buf, |
2155 | VENDOR_READ_LENGTH, MOS_WDR_TIMEOUT); | |
093ea2d3 | 2156 | |
40c24f28 JH |
2157 | /* For a MCS7840 device GPIO0 must be set to 1 */ |
2158 | if (buf[0] & 0x01) | |
2159 | device_type = MOSCHIP_DEVICE_ID_7840; | |
2160 | else if (mos7810_check(serial)) | |
2161 | device_type = MOSCHIP_DEVICE_ID_7810; | |
2162 | else | |
2163 | device_type = MOSCHIP_DEVICE_ID_7820; | |
2164 | ||
2165 | kfree(buf); | |
2166 | out: | |
683a0e4d | 2167 | usb_set_serial_data(serial, (void *)(unsigned long)device_type); |
40c24f28 JH |
2168 | |
2169 | return 0; | |
2170 | } | |
2171 | ||
2172 | static int mos7840_calc_num_ports(struct usb_serial *serial) | |
2173 | { | |
683a0e4d | 2174 | int device_type = (unsigned long)usb_get_serial_data(serial); |
40c24f28 | 2175 | int mos7840_num_ports; |
093ea2d3 | 2176 | |
0eafe4de | 2177 | mos7840_num_ports = (device_type >> 4) & 0x000F; |
0eafe4de | 2178 | |
3f542974 PS |
2179 | return mos7840_num_ports; |
2180 | } | |
2181 | ||
80c00750 | 2182 | static int mos7840_port_probe(struct usb_serial_port *port) |
3f542974 | 2183 | { |
80c00750 | 2184 | struct usb_serial *serial = port->serial; |
683a0e4d | 2185 | int device_type = (unsigned long)usb_get_serial_data(serial); |
3f542974 | 2186 | struct moschip_port *mos7840_port; |
80c00750 JH |
2187 | int status; |
2188 | int pnum; | |
3f542974 | 2189 | __u16 Data; |
3f542974 | 2190 | |
3f542974 PS |
2191 | /* we set up the pointers to the endpoints in the mos7840_open * |
2192 | * function, as the structures aren't created yet. */ | |
2193 | ||
1143832e | 2194 | pnum = port->port_number; |
80c00750 | 2195 | |
ae685eff JH |
2196 | dev_dbg(&port->dev, "mos7840_startup: configuring port %d\n", pnum); |
2197 | mos7840_port = kzalloc(sizeof(struct moschip_port), GFP_KERNEL); | |
10c642d0 | 2198 | if (!mos7840_port) |
ae685eff | 2199 | return -ENOMEM; |
3f542974 | 2200 | |
ae685eff JH |
2201 | /* Initialize all port interrupt end point to port 0 int |
2202 | * endpoint. Our device has only one interrupt end point | |
2203 | * common to all port */ | |
2204 | ||
2205 | mos7840_port->port = port; | |
2206 | mos7840_set_port_private(port, mos7840_port); | |
2207 | spin_lock_init(&mos7840_port->pool_lock); | |
2208 | ||
2209 | /* minor is not initialised until later by | |
2210 | * usb-serial.c:get_free_serial() and cannot therefore be used | |
2211 | * to index device instances */ | |
2212 | mos7840_port->port_num = pnum + 1; | |
e5b1e206 | 2213 | dev_dbg(&port->dev, "port->minor = %d\n", port->minor); |
ae685eff | 2214 | dev_dbg(&port->dev, "mos7840_port->port_num = %d\n", mos7840_port->port_num); |
ae685eff JH |
2215 | |
2216 | if (mos7840_port->port_num == 1) { | |
2217 | mos7840_port->SpRegOffset = 0x0; | |
2218 | mos7840_port->ControlRegOffset = 0x1; | |
2219 | mos7840_port->DcrRegOffset = 0x4; | |
2220 | } else if ((mos7840_port->port_num == 2) && (serial->num_ports == 4)) { | |
2221 | mos7840_port->SpRegOffset = 0x8; | |
2222 | mos7840_port->ControlRegOffset = 0x9; | |
2223 | mos7840_port->DcrRegOffset = 0x16; | |
2224 | } else if ((mos7840_port->port_num == 2) && (serial->num_ports == 2)) { | |
2225 | mos7840_port->SpRegOffset = 0xa; | |
2226 | mos7840_port->ControlRegOffset = 0xb; | |
2227 | mos7840_port->DcrRegOffset = 0x19; | |
2228 | } else if ((mos7840_port->port_num == 3) && (serial->num_ports == 4)) { | |
2229 | mos7840_port->SpRegOffset = 0xa; | |
2230 | mos7840_port->ControlRegOffset = 0xb; | |
2231 | mos7840_port->DcrRegOffset = 0x19; | |
2232 | } else if ((mos7840_port->port_num == 4) && (serial->num_ports == 4)) { | |
2233 | mos7840_port->SpRegOffset = 0xc; | |
2234 | mos7840_port->ControlRegOffset = 0xd; | |
2235 | mos7840_port->DcrRegOffset = 0x1c; | |
2236 | } | |
2237 | mos7840_dump_serial_port(port, mos7840_port); | |
2238 | mos7840_set_port_private(port, mos7840_port); | |
2239 | ||
2240 | /* enable rx_disable bit in control register */ | |
2241 | status = mos7840_get_reg_sync(port, | |
2242 | mos7840_port->ControlRegOffset, &Data); | |
2243 | if (status < 0) { | |
2244 | dev_dbg(&port->dev, "Reading ControlReg failed status-0x%x\n", status); | |
2245 | goto out; | |
2246 | } else | |
2247 | dev_dbg(&port->dev, "ControlReg Reading success val is %x, status%d\n", Data, status); | |
2248 | Data |= 0x08; /* setting driver done bit */ | |
2249 | Data |= 0x04; /* sp1_bit to have cts change reflect in | |
2250 | modem status reg */ | |
2251 | ||
2252 | /* Data |= 0x20; //rx_disable bit */ | |
2253 | status = mos7840_set_reg_sync(port, | |
2254 | mos7840_port->ControlRegOffset, Data); | |
2255 | if (status < 0) { | |
2256 | dev_dbg(&port->dev, "Writing ControlReg failed(rx_disable) status-0x%x\n", status); | |
2257 | goto out; | |
2258 | } else | |
2259 | dev_dbg(&port->dev, "ControlReg Writing success(rx_disable) status%d\n", status); | |
2260 | ||
2261 | /* Write default values in DCR (i.e 0x01 in DCR0, 0x05 in DCR2 | |
2262 | and 0x24 in DCR3 */ | |
2263 | Data = 0x01; | |
2264 | status = mos7840_set_reg_sync(port, | |
2265 | (__u16) (mos7840_port->DcrRegOffset + 0), Data); | |
2266 | if (status < 0) { | |
2267 | dev_dbg(&port->dev, "Writing DCR0 failed status-0x%x\n", status); | |
2268 | goto out; | |
2269 | } else | |
2270 | dev_dbg(&port->dev, "DCR0 Writing success status%d\n", status); | |
3f542974 | 2271 | |
ae685eff JH |
2272 | Data = 0x05; |
2273 | status = mos7840_set_reg_sync(port, | |
2274 | (__u16) (mos7840_port->DcrRegOffset + 1), Data); | |
2275 | if (status < 0) { | |
2276 | dev_dbg(&port->dev, "Writing DCR1 failed status-0x%x\n", status); | |
2277 | goto out; | |
2278 | } else | |
2279 | dev_dbg(&port->dev, "DCR1 Writing success status%d\n", status); | |
3f542974 | 2280 | |
ae685eff JH |
2281 | Data = 0x24; |
2282 | status = mos7840_set_reg_sync(port, | |
2283 | (__u16) (mos7840_port->DcrRegOffset + 2), Data); | |
2284 | if (status < 0) { | |
2285 | dev_dbg(&port->dev, "Writing DCR2 failed status-0x%x\n", status); | |
2286 | goto out; | |
2287 | } else | |
2288 | dev_dbg(&port->dev, "DCR2 Writing success status%d\n", status); | |
3f542974 | 2289 | |
ae685eff JH |
2290 | /* write values in clkstart0x0 and clkmulti 0x20 */ |
2291 | Data = 0x0; | |
2292 | status = mos7840_set_reg_sync(port, CLK_START_VALUE_REGISTER, Data); | |
2293 | if (status < 0) { | |
2294 | dev_dbg(&port->dev, "Writing CLK_START_VALUE_REGISTER failed status-0x%x\n", status); | |
2295 | goto out; | |
2296 | } else | |
2297 | dev_dbg(&port->dev, "CLK_START_VALUE_REGISTER Writing success status%d\n", status); | |
3f542974 | 2298 | |
ae685eff JH |
2299 | Data = 0x20; |
2300 | status = mos7840_set_reg_sync(port, CLK_MULTI_REGISTER, Data); | |
2301 | if (status < 0) { | |
2302 | dev_dbg(&port->dev, "Writing CLK_MULTI_REGISTER failed status-0x%x\n", status); | |
2303 | goto error; | |
2304 | } else | |
2305 | dev_dbg(&port->dev, "CLK_MULTI_REGISTER Writing success status%d\n", status); | |
3f542974 | 2306 | |
ae685eff JH |
2307 | /* write value 0x0 to scratchpad register */ |
2308 | Data = 0x00; | |
2309 | status = mos7840_set_uart_reg(port, SCRATCH_PAD_REGISTER, Data); | |
2310 | if (status < 0) { | |
2311 | dev_dbg(&port->dev, "Writing SCRATCH_PAD_REGISTER failed status-0x%x\n", status); | |
2312 | goto out; | |
2313 | } else | |
2314 | dev_dbg(&port->dev, "SCRATCH_PAD_REGISTER Writing success status%d\n", status); | |
2315 | ||
2316 | /* Zero Length flag register */ | |
2317 | if ((mos7840_port->port_num != 1) && (serial->num_ports == 2)) { | |
2318 | Data = 0xff; | |
80c00750 | 2319 | status = mos7840_set_reg_sync(port, |
ae685eff JH |
2320 | (__u16) (ZLP_REG1 + |
2321 | ((__u16)mos7840_port->port_num)), Data); | |
2322 | dev_dbg(&port->dev, "ZLIP offset %x\n", | |
2323 | (__u16)(ZLP_REG1 + ((__u16) mos7840_port->port_num))); | |
3f542974 | 2324 | if (status < 0) { |
ae685eff JH |
2325 | dev_dbg(&port->dev, "Writing ZLP_REG%d failed status-0x%x\n", pnum + 2, status); |
2326 | goto out; | |
3f542974 | 2327 | } else |
ae685eff JH |
2328 | dev_dbg(&port->dev, "ZLP_REG%d Writing success status%d\n", pnum + 2, status); |
2329 | } else { | |
2330 | Data = 0xff; | |
80c00750 | 2331 | status = mos7840_set_reg_sync(port, |
ae685eff JH |
2332 | (__u16) (ZLP_REG1 + |
2333 | ((__u16)mos7840_port->port_num) - 0x1), Data); | |
2334 | dev_dbg(&port->dev, "ZLIP offset %x\n", | |
2335 | (__u16)(ZLP_REG1 + ((__u16) mos7840_port->port_num) - 0x1)); | |
3f542974 | 2336 | if (status < 0) { |
ae685eff JH |
2337 | dev_dbg(&port->dev, "Writing ZLP_REG%d failed status-0x%x\n", pnum + 1, status); |
2338 | goto out; | |
3f542974 | 2339 | } else |
ae685eff | 2340 | dev_dbg(&port->dev, "ZLP_REG%d Writing success status%d\n", pnum + 1, status); |
3f542974 | 2341 | |
ae685eff JH |
2342 | } |
2343 | mos7840_port->control_urb = usb_alloc_urb(0, GFP_KERNEL); | |
2344 | mos7840_port->ctrl_buf = kmalloc(16, GFP_KERNEL); | |
2345 | mos7840_port->dr = kmalloc(sizeof(struct usb_ctrlrequest), | |
2346 | GFP_KERNEL); | |
2347 | if (!mos7840_port->control_urb || !mos7840_port->ctrl_buf || | |
2348 | !mos7840_port->dr) { | |
2349 | status = -ENOMEM; | |
2350 | goto error; | |
2351 | } | |
0eafe4de | 2352 | |
ae685eff | 2353 | mos7840_port->has_led = false; |
0eafe4de | 2354 | |
ae685eff JH |
2355 | /* Initialize LED timers */ |
2356 | if (device_type == MOSCHIP_DEVICE_ID_7810) { | |
2357 | mos7840_port->has_led = true; | |
0eafe4de | 2358 | |
05cf0dec JH |
2359 | mos7840_port->led_urb = usb_alloc_urb(0, GFP_KERNEL); |
2360 | mos7840_port->led_dr = kmalloc(sizeof(*mos7840_port->led_dr), | |
2361 | GFP_KERNEL); | |
2362 | if (!mos7840_port->led_urb || !mos7840_port->led_dr) { | |
2363 | status = -ENOMEM; | |
2364 | goto error; | |
2365 | } | |
2366 | ||
ae685eff JH |
2367 | init_timer(&mos7840_port->led_timer1); |
2368 | mos7840_port->led_timer1.function = mos7840_led_off; | |
2369 | mos7840_port->led_timer1.expires = | |
2370 | jiffies + msecs_to_jiffies(LED_ON_MS); | |
2371 | mos7840_port->led_timer1.data = (unsigned long)mos7840_port; | |
0eafe4de | 2372 | |
ae685eff JH |
2373 | init_timer(&mos7840_port->led_timer2); |
2374 | mos7840_port->led_timer2.function = mos7840_led_flag_off; | |
2375 | mos7840_port->led_timer2.expires = | |
2376 | jiffies + msecs_to_jiffies(LED_OFF_MS); | |
2377 | mos7840_port->led_timer2.data = (unsigned long)mos7840_port; | |
0eafe4de | 2378 | |
ae685eff JH |
2379 | /* Turn off LED */ |
2380 | mos7840_set_led_sync(port, MODEM_CONTROL_REGISTER, 0x0300); | |
2381 | } | |
2382 | out: | |
80c00750 JH |
2383 | if (pnum == serial->num_ports - 1) { |
2384 | /* Zero Length flag enable */ | |
2385 | Data = 0x0f; | |
2386 | status = mos7840_set_reg_sync(serial->port[0], ZLP_REG5, Data); | |
2387 | if (status < 0) { | |
2388 | dev_dbg(&port->dev, "Writing ZLP_REG5 failed status-0x%x\n", status); | |
2389 | goto error; | |
2390 | } else | |
2391 | dev_dbg(&port->dev, "ZLP_REG5 Writing success status%d\n", status); | |
2392 | ||
2393 | /* setting configuration feature to one */ | |
2394 | usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), | |
2395 | 0x03, 0x00, 0x01, 0x00, NULL, 0x00, | |
2396 | MOS_WDR_TIMEOUT); | |
2397 | } | |
3f542974 | 2398 | return 0; |
0de9a702 | 2399 | error: |
05cf0dec JH |
2400 | kfree(mos7840_port->led_dr); |
2401 | usb_free_urb(mos7840_port->led_urb); | |
80c00750 JH |
2402 | kfree(mos7840_port->dr); |
2403 | kfree(mos7840_port->ctrl_buf); | |
2404 | usb_free_urb(mos7840_port->control_urb); | |
2405 | kfree(mos7840_port); | |
0de9a702 | 2406 | |
0de9a702 | 2407 | return status; |
3f542974 PS |
2408 | } |
2409 | ||
80c00750 | 2410 | static int mos7840_port_remove(struct usb_serial_port *port) |
3f542974 | 2411 | { |
3f542974 | 2412 | struct moschip_port *mos7840_port; |
3f542974 | 2413 | |
80c00750 | 2414 | mos7840_port = mos7840_get_port_private(port); |
3f542974 | 2415 | |
80c00750 JH |
2416 | if (mos7840_port->has_led) { |
2417 | /* Turn off LED */ | |
2418 | mos7840_set_led_sync(port, MODEM_CONTROL_REGISTER, 0x0300); | |
3f542974 | 2419 | |
80c00750 JH |
2420 | del_timer_sync(&mos7840_port->led_timer1); |
2421 | del_timer_sync(&mos7840_port->led_timer2); | |
05cf0dec JH |
2422 | |
2423 | usb_kill_urb(mos7840_port->led_urb); | |
2424 | usb_free_urb(mos7840_port->led_urb); | |
2425 | kfree(mos7840_port->led_dr); | |
f9c99bb8 | 2426 | } |
80c00750 JH |
2427 | usb_kill_urb(mos7840_port->control_urb); |
2428 | usb_free_urb(mos7840_port->control_urb); | |
2429 | kfree(mos7840_port->ctrl_buf); | |
2430 | kfree(mos7840_port->dr); | |
2431 | kfree(mos7840_port); | |
f9c99bb8 | 2432 | |
80c00750 | 2433 | return 0; |
3f542974 PS |
2434 | } |
2435 | ||
2436 | static struct usb_serial_driver moschip7840_4port_device = { | |
2437 | .driver = { | |
2438 | .owner = THIS_MODULE, | |
2439 | .name = "mos7840", | |
2440 | }, | |
2441 | .description = DRIVER_DESC, | |
68e24113 | 2442 | .id_table = id_table, |
3f542974 | 2443 | .num_ports = 4, |
3f542974 PS |
2444 | .open = mos7840_open, |
2445 | .close = mos7840_close, | |
2446 | .write = mos7840_write, | |
2447 | .write_room = mos7840_write_room, | |
2448 | .chars_in_buffer = mos7840_chars_in_buffer, | |
2449 | .throttle = mos7840_throttle, | |
2450 | .unthrottle = mos7840_unthrottle, | |
2451 | .calc_num_ports = mos7840_calc_num_ports, | |
40c24f28 | 2452 | .probe = mos7840_probe, |
3f542974 PS |
2453 | .ioctl = mos7840_ioctl, |
2454 | .set_termios = mos7840_set_termios, | |
2455 | .break_ctl = mos7840_break, | |
2456 | .tiocmget = mos7840_tiocmget, | |
2457 | .tiocmset = mos7840_tiocmset, | |
0c613371 | 2458 | .tiocmiwait = usb_serial_generic_tiocmiwait, |
8c1a07ff | 2459 | .get_icount = usb_serial_generic_get_icount, |
80c00750 JH |
2460 | .port_probe = mos7840_port_probe, |
2461 | .port_remove = mos7840_port_remove, | |
3f542974 PS |
2462 | .read_bulk_callback = mos7840_bulk_in_callback, |
2463 | .read_int_callback = mos7840_interrupt_callback, | |
2464 | }; | |
2465 | ||
4d2a7aff AS |
2466 | static struct usb_serial_driver * const serial_drivers[] = { |
2467 | &moschip7840_4port_device, NULL | |
2468 | }; | |
2469 | ||
68e24113 | 2470 | module_usb_serial_driver(serial_drivers, id_table); |
3f542974 | 2471 | |
3f542974 PS |
2472 | MODULE_DESCRIPTION(DRIVER_DESC); |
2473 | MODULE_LICENSE("GPL"); |