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3f542974 PS |
1 | /* |
2 | * This program is free software; you can redistribute it and/or modify | |
3 | * it under the terms of the GNU General Public License as published by | |
4 | * the Free Software Foundation; either version 2 of the License, or | |
5 | * (at your option) any later version. | |
6 | * | |
7 | * This program is distributed in the hope that it will be useful, | |
8 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
9 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
10 | * GNU General Public License for more details. | |
11 | * | |
12 | * You should have received a copy of the GNU General Public License | |
13 | * along with this program; if not, write to the Free Software | |
14 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
15 | * | |
16 | * Clean ups from Moschip version and a few ioctl implementations by: | |
17 | * Paul B Schroeder <pschroeder "at" uplogix "dot" com> | |
18 | * | |
19 | * Originally based on drivers/usb/serial/io_edgeport.c which is: | |
20 | * Copyright (C) 2000 Inside Out Networks, All rights reserved. | |
21 | * Copyright (C) 2001-2002 Greg Kroah-Hartman <greg@kroah.com> | |
22 | * | |
23 | */ | |
24 | ||
25 | #include <linux/kernel.h> | |
26 | #include <linux/errno.h> | |
27 | #include <linux/init.h> | |
28 | #include <linux/slab.h> | |
29 | #include <linux/tty.h> | |
30 | #include <linux/tty_driver.h> | |
31 | #include <linux/tty_flip.h> | |
32 | #include <linux/module.h> | |
33 | #include <linux/serial.h> | |
34 | #include <linux/usb.h> | |
35 | #include <linux/usb/serial.h> | |
880af9db | 36 | #include <linux/uaccess.h> |
3f542974 PS |
37 | |
38 | /* | |
39 | * Version Information | |
40 | */ | |
37768adf | 41 | #define DRIVER_VERSION "1.3.2" |
3f542974 PS |
42 | #define DRIVER_DESC "Moschip 7840/7820 USB Serial Driver" |
43 | ||
44 | /* | |
45 | * 16C50 UART register defines | |
46 | */ | |
47 | ||
48 | #define LCR_BITS_5 0x00 /* 5 bits/char */ | |
49 | #define LCR_BITS_6 0x01 /* 6 bits/char */ | |
50 | #define LCR_BITS_7 0x02 /* 7 bits/char */ | |
51 | #define LCR_BITS_8 0x03 /* 8 bits/char */ | |
52 | #define LCR_BITS_MASK 0x03 /* Mask for bits/char field */ | |
53 | ||
54 | #define LCR_STOP_1 0x00 /* 1 stop bit */ | |
55 | #define LCR_STOP_1_5 0x04 /* 1.5 stop bits (if 5 bits/char) */ | |
56 | #define LCR_STOP_2 0x04 /* 2 stop bits (if 6-8 bits/char) */ | |
57 | #define LCR_STOP_MASK 0x04 /* Mask for stop bits field */ | |
58 | ||
59 | #define LCR_PAR_NONE 0x00 /* No parity */ | |
60 | #define LCR_PAR_ODD 0x08 /* Odd parity */ | |
61 | #define LCR_PAR_EVEN 0x18 /* Even parity */ | |
62 | #define LCR_PAR_MARK 0x28 /* Force parity bit to 1 */ | |
63 | #define LCR_PAR_SPACE 0x38 /* Force parity bit to 0 */ | |
64 | #define LCR_PAR_MASK 0x38 /* Mask for parity field */ | |
65 | ||
66 | #define LCR_SET_BREAK 0x40 /* Set Break condition */ | |
67 | #define LCR_DL_ENABLE 0x80 /* Enable access to divisor latch */ | |
68 | ||
69 | #define MCR_DTR 0x01 /* Assert DTR */ | |
70 | #define MCR_RTS 0x02 /* Assert RTS */ | |
71 | #define MCR_OUT1 0x04 /* Loopback only: Sets state of RI */ | |
72 | #define MCR_MASTER_IE 0x08 /* Enable interrupt outputs */ | |
73 | #define MCR_LOOPBACK 0x10 /* Set internal (digital) loopback mode */ | |
74 | #define MCR_XON_ANY 0x20 /* Enable any char to exit XOFF mode */ | |
75 | ||
76 | #define MOS7840_MSR_CTS 0x10 /* Current state of CTS */ | |
77 | #define MOS7840_MSR_DSR 0x20 /* Current state of DSR */ | |
78 | #define MOS7840_MSR_RI 0x40 /* Current state of RI */ | |
79 | #define MOS7840_MSR_CD 0x80 /* Current state of CD */ | |
80 | ||
81 | /* | |
82 | * Defines used for sending commands to port | |
83 | */ | |
84 | ||
880af9db AC |
85 | #define WAIT_FOR_EVER (HZ * 0) /* timeout urb is wait for ever */ |
86 | #define MOS_WDR_TIMEOUT (HZ * 5) /* default urb timeout */ | |
3f542974 PS |
87 | |
88 | #define MOS_PORT1 0x0200 | |
89 | #define MOS_PORT2 0x0300 | |
90 | #define MOS_VENREG 0x0000 | |
91 | #define MOS_MAX_PORT 0x02 | |
92 | #define MOS_WRITE 0x0E | |
93 | #define MOS_READ 0x0D | |
94 | ||
95 | /* Requests */ | |
96 | #define MCS_RD_RTYPE 0xC0 | |
97 | #define MCS_WR_RTYPE 0x40 | |
98 | #define MCS_RDREQ 0x0D | |
99 | #define MCS_WRREQ 0x0E | |
100 | #define MCS_CTRL_TIMEOUT 500 | |
101 | #define VENDOR_READ_LENGTH (0x01) | |
102 | ||
103 | #define MAX_NAME_LEN 64 | |
104 | ||
880af9db AC |
105 | #define ZLP_REG1 0x3A /* Zero_Flag_Reg1 58 */ |
106 | #define ZLP_REG5 0x3E /* Zero_Flag_Reg5 62 */ | |
3f542974 PS |
107 | |
108 | /* For higher baud Rates use TIOCEXBAUD */ | |
109 | #define TIOCEXBAUD 0x5462 | |
110 | ||
111 | /* vendor id and device id defines */ | |
112 | ||
11e1abb4 | 113 | /* The native mos7840/7820 component */ |
3f542974 PS |
114 | #define USB_VENDOR_ID_MOSCHIP 0x9710 |
115 | #define MOSCHIP_DEVICE_ID_7840 0x7840 | |
116 | #define MOSCHIP_DEVICE_ID_7820 0x7820 | |
11e1abb4 DL |
117 | /* The native component can have its vendor/device id's overridden |
118 | * in vendor-specific implementations. Such devices can be handled | |
119 | * by making a change here, in moschip_port_id_table, and in | |
120 | * moschip_id_table_combined | |
121 | */ | |
870408c8 DL |
122 | #define USB_VENDOR_ID_BANDB 0x0856 |
123 | #define BANDB_DEVICE_ID_USO9ML2_2 0xAC22 | |
124 | #define BANDB_DEVICE_ID_USO9ML2_2P 0xBC00 | |
125 | #define BANDB_DEVICE_ID_USO9ML2_4 0xAC24 | |
126 | #define BANDB_DEVICE_ID_USO9ML2_4P 0xBC01 | |
127 | #define BANDB_DEVICE_ID_US9ML2_2 0xAC29 | |
128 | #define BANDB_DEVICE_ID_US9ML2_4 0xAC30 | |
129 | #define BANDB_DEVICE_ID_USPTL4_2 0xAC31 | |
130 | #define BANDB_DEVICE_ID_USPTL4_4 0xAC32 | |
131 | #define BANDB_DEVICE_ID_USOPTL4_2 0xAC42 | |
132 | #define BANDB_DEVICE_ID_USOPTL4_2P 0xBC02 | |
133 | #define BANDB_DEVICE_ID_USOPTL4_4 0xAC44 | |
134 | #define BANDB_DEVICE_ID_USOPTL4_4P 0xBC03 | |
135 | #define BANDB_DEVICE_ID_USOPTL2_4 0xAC24 | |
3f542974 | 136 | |
9d498bea RL |
137 | /* This driver also supports |
138 | * ATEN UC2324 device using Moschip MCS7840 | |
139 | * ATEN UC2322 device using Moschip MCS7820 | |
140 | */ | |
e9b8cffa TC |
141 | #define USB_VENDOR_ID_ATENINTL 0x0557 |
142 | #define ATENINTL_DEVICE_ID_UC2324 0x2011 | |
9d498bea | 143 | #define ATENINTL_DEVICE_ID_UC2322 0x7820 |
e9b8cffa | 144 | |
11e1abb4 | 145 | /* Interrupt Routine Defines */ |
3f542974 PS |
146 | |
147 | #define SERIAL_IIR_RLS 0x06 | |
148 | #define SERIAL_IIR_MS 0x00 | |
149 | ||
150 | /* | |
151 | * Emulation of the bit mask on the LINE STATUS REGISTER. | |
152 | */ | |
153 | #define SERIAL_LSR_DR 0x0001 | |
154 | #define SERIAL_LSR_OE 0x0002 | |
155 | #define SERIAL_LSR_PE 0x0004 | |
156 | #define SERIAL_LSR_FE 0x0008 | |
157 | #define SERIAL_LSR_BI 0x0010 | |
158 | ||
159 | #define MOS_MSR_DELTA_CTS 0x10 | |
160 | #define MOS_MSR_DELTA_DSR 0x20 | |
161 | #define MOS_MSR_DELTA_RI 0x40 | |
162 | #define MOS_MSR_DELTA_CD 0x80 | |
163 | ||
880af9db | 164 | /* Serial Port register Address */ |
3f542974 PS |
165 | #define INTERRUPT_ENABLE_REGISTER ((__u16)(0x01)) |
166 | #define FIFO_CONTROL_REGISTER ((__u16)(0x02)) | |
167 | #define LINE_CONTROL_REGISTER ((__u16)(0x03)) | |
168 | #define MODEM_CONTROL_REGISTER ((__u16)(0x04)) | |
169 | #define LINE_STATUS_REGISTER ((__u16)(0x05)) | |
170 | #define MODEM_STATUS_REGISTER ((__u16)(0x06)) | |
171 | #define SCRATCH_PAD_REGISTER ((__u16)(0x07)) | |
172 | #define DIVISOR_LATCH_LSB ((__u16)(0x00)) | |
173 | #define DIVISOR_LATCH_MSB ((__u16)(0x01)) | |
174 | ||
175 | #define CLK_MULTI_REGISTER ((__u16)(0x02)) | |
176 | #define CLK_START_VALUE_REGISTER ((__u16)(0x03)) | |
093ea2d3 | 177 | #define GPIO_REGISTER ((__u16)(0x07)) |
3f542974 PS |
178 | |
179 | #define SERIAL_LCR_DLAB ((__u16)(0x0080)) | |
180 | ||
181 | /* | |
182 | * URB POOL related defines | |
183 | */ | |
184 | #define NUM_URBS 16 /* URB Count */ | |
185 | #define URB_TRANSFER_BUFFER_SIZE 32 /* URB Size */ | |
186 | ||
187 | ||
7d40d7e8 | 188 | static const struct usb_device_id moschip_port_id_table[] = { |
3f542974 PS |
189 | {USB_DEVICE(USB_VENDOR_ID_MOSCHIP, MOSCHIP_DEVICE_ID_7840)}, |
190 | {USB_DEVICE(USB_VENDOR_ID_MOSCHIP, MOSCHIP_DEVICE_ID_7820)}, | |
acf509ae | 191 | {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USO9ML2_2)}, |
870408c8 | 192 | {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USO9ML2_2P)}, |
acf509ae | 193 | {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USO9ML2_4)}, |
870408c8 | 194 | {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USO9ML2_4P)}, |
acf509ae CB |
195 | {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_US9ML2_2)}, |
196 | {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_US9ML2_4)}, | |
197 | {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USPTL4_2)}, | |
198 | {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USPTL4_4)}, | |
11e1abb4 | 199 | {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USOPTL4_2)}, |
870408c8 | 200 | {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USOPTL4_2P)}, |
acf509ae | 201 | {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USOPTL4_4)}, |
870408c8 | 202 | {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USOPTL4_4P)}, |
27f1281d | 203 | {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USOPTL2_4)}, |
e9b8cffa | 204 | {USB_DEVICE(USB_VENDOR_ID_ATENINTL, ATENINTL_DEVICE_ID_UC2324)}, |
9d498bea | 205 | {USB_DEVICE(USB_VENDOR_ID_ATENINTL, ATENINTL_DEVICE_ID_UC2322)}, |
3f542974 PS |
206 | {} /* terminating entry */ |
207 | }; | |
208 | ||
7d40d7e8 | 209 | static const struct usb_device_id moschip_id_table_combined[] __devinitconst = { |
3f542974 PS |
210 | {USB_DEVICE(USB_VENDOR_ID_MOSCHIP, MOSCHIP_DEVICE_ID_7840)}, |
211 | {USB_DEVICE(USB_VENDOR_ID_MOSCHIP, MOSCHIP_DEVICE_ID_7820)}, | |
acf509ae | 212 | {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USO9ML2_2)}, |
870408c8 | 213 | {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USO9ML2_2P)}, |
acf509ae | 214 | {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USO9ML2_4)}, |
870408c8 | 215 | {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USO9ML2_4P)}, |
acf509ae CB |
216 | {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_US9ML2_2)}, |
217 | {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_US9ML2_4)}, | |
218 | {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USPTL4_2)}, | |
219 | {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USPTL4_4)}, | |
11e1abb4 | 220 | {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USOPTL4_2)}, |
870408c8 | 221 | {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USOPTL4_2P)}, |
acf509ae | 222 | {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USOPTL4_4)}, |
870408c8 | 223 | {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USOPTL4_4P)}, |
27f1281d | 224 | {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USOPTL2_4)}, |
e9b8cffa | 225 | {USB_DEVICE(USB_VENDOR_ID_ATENINTL, ATENINTL_DEVICE_ID_UC2324)}, |
9d498bea | 226 | {USB_DEVICE(USB_VENDOR_ID_ATENINTL, ATENINTL_DEVICE_ID_UC2322)}, |
3f542974 PS |
227 | {} /* terminating entry */ |
228 | }; | |
229 | ||
230 | MODULE_DEVICE_TABLE(usb, moschip_id_table_combined); | |
231 | ||
232 | /* This structure holds all of the local port information */ | |
233 | ||
234 | struct moschip_port { | |
235 | int port_num; /*Actual port number in the device(1,2,etc) */ | |
236 | struct urb *write_urb; /* write URB for this port */ | |
237 | struct urb *read_urb; /* read URB for this port */ | |
0de9a702 | 238 | struct urb *int_urb; |
3f542974 PS |
239 | __u8 shadowLCR; /* last LCR value received */ |
240 | __u8 shadowMCR; /* last MCR value received */ | |
241 | char open; | |
0de9a702 ON |
242 | char open_ports; |
243 | char zombie; | |
3f542974 PS |
244 | wait_queue_head_t wait_chase; /* for handling sleeping while waiting for chase to finish */ |
245 | wait_queue_head_t delta_msr_wait; /* for handling sleeping while waiting for msr change to happen */ | |
246 | int delta_msr_cond; | |
247 | struct async_icount icount; | |
248 | struct usb_serial_port *port; /* loop back to the owner of this object */ | |
249 | ||
880af9db | 250 | /* Offsets */ |
3f542974 PS |
251 | __u8 SpRegOffset; |
252 | __u8 ControlRegOffset; | |
253 | __u8 DcrRegOffset; | |
880af9db | 254 | /* for processing control URBS in interrupt context */ |
3f542974 | 255 | struct urb *control_urb; |
0de9a702 | 256 | struct usb_ctrlrequest *dr; |
3f542974 PS |
257 | char *ctrl_buf; |
258 | int MsrLsr; | |
259 | ||
0de9a702 | 260 | spinlock_t pool_lock; |
3f542974 | 261 | struct urb *write_urb_pool[NUM_URBS]; |
0de9a702 | 262 | char busy[NUM_URBS]; |
50de36f7 | 263 | bool read_urb_busy; |
3f542974 PS |
264 | }; |
265 | ||
266 | ||
90ab5ee9 | 267 | static bool debug; |
3f542974 PS |
268 | |
269 | /* | |
270 | * mos7840_set_reg_sync | |
271 | * To set the Control register by calling usb_fill_control_urb function | |
272 | * by passing usb_sndctrlpipe function as parameter. | |
273 | */ | |
274 | ||
275 | static int mos7840_set_reg_sync(struct usb_serial_port *port, __u16 reg, | |
276 | __u16 val) | |
277 | { | |
278 | struct usb_device *dev = port->serial->dev; | |
279 | val = val & 0x00ff; | |
84fe6e79 | 280 | dbg("mos7840_set_reg_sync offset is %x, value %x", reg, val); |
3f542974 PS |
281 | |
282 | return usb_control_msg(dev, usb_sndctrlpipe(dev, 0), MCS_WRREQ, | |
283 | MCS_WR_RTYPE, val, reg, NULL, 0, | |
284 | MOS_WDR_TIMEOUT); | |
285 | } | |
286 | ||
287 | /* | |
288 | * mos7840_get_reg_sync | |
289 | * To set the Uart register by calling usb_fill_control_urb function by | |
290 | * passing usb_rcvctrlpipe function as parameter. | |
291 | */ | |
292 | ||
293 | static int mos7840_get_reg_sync(struct usb_serial_port *port, __u16 reg, | |
880af9db | 294 | __u16 *val) |
3f542974 PS |
295 | { |
296 | struct usb_device *dev = port->serial->dev; | |
297 | int ret = 0; | |
9e221a35 JH |
298 | u8 *buf; |
299 | ||
300 | buf = kmalloc(VENDOR_READ_LENGTH, GFP_KERNEL); | |
301 | if (!buf) | |
302 | return -ENOMEM; | |
3f542974 PS |
303 | |
304 | ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), MCS_RDREQ, | |
9e221a35 | 305 | MCS_RD_RTYPE, 0, reg, buf, VENDOR_READ_LENGTH, |
3f542974 | 306 | MOS_WDR_TIMEOUT); |
9e221a35 | 307 | *val = buf[0]; |
84fe6e79 | 308 | dbg("mos7840_get_reg_sync offset is %x, return val %x", reg, *val); |
9e221a35 JH |
309 | |
310 | kfree(buf); | |
3f542974 PS |
311 | return ret; |
312 | } | |
313 | ||
314 | /* | |
315 | * mos7840_set_uart_reg | |
316 | * To set the Uart register by calling usb_fill_control_urb function by | |
317 | * passing usb_sndctrlpipe function as parameter. | |
318 | */ | |
319 | ||
320 | static int mos7840_set_uart_reg(struct usb_serial_port *port, __u16 reg, | |
321 | __u16 val) | |
322 | { | |
323 | ||
324 | struct usb_device *dev = port->serial->dev; | |
325 | val = val & 0x00ff; | |
880af9db AC |
326 | /* For the UART control registers, the application number need |
327 | to be Or'ed */ | |
0de9a702 | 328 | if (port->serial->num_ports == 4) { |
880af9db AC |
329 | val |= (((__u16) port->number - |
330 | (__u16) (port->serial->minor)) + 1) << 8; | |
84fe6e79 | 331 | dbg("mos7840_set_uart_reg application number is %x", val); |
3f542974 PS |
332 | } else { |
333 | if (((__u16) port->number - (__u16) (port->serial->minor)) == 0) { | |
880af9db | 334 | val |= (((__u16) port->number - |
3f542974 | 335 | (__u16) (port->serial->minor)) + 1) << 8; |
84fe6e79 | 336 | dbg("mos7840_set_uart_reg application number is %x", |
3f542974 PS |
337 | val); |
338 | } else { | |
339 | val |= | |
340 | (((__u16) port->number - | |
341 | (__u16) (port->serial->minor)) + 2) << 8; | |
84fe6e79 | 342 | dbg("mos7840_set_uart_reg application number is %x", |
3f542974 PS |
343 | val); |
344 | } | |
345 | } | |
346 | return usb_control_msg(dev, usb_sndctrlpipe(dev, 0), MCS_WRREQ, | |
347 | MCS_WR_RTYPE, val, reg, NULL, 0, | |
348 | MOS_WDR_TIMEOUT); | |
349 | ||
350 | } | |
351 | ||
352 | /* | |
353 | * mos7840_get_uart_reg | |
354 | * To set the Control register by calling usb_fill_control_urb function | |
355 | * by passing usb_rcvctrlpipe function as parameter. | |
356 | */ | |
357 | static int mos7840_get_uart_reg(struct usb_serial_port *port, __u16 reg, | |
880af9db | 358 | __u16 *val) |
3f542974 PS |
359 | { |
360 | struct usb_device *dev = port->serial->dev; | |
361 | int ret = 0; | |
362 | __u16 Wval; | |
9e221a35 JH |
363 | u8 *buf; |
364 | ||
365 | buf = kmalloc(VENDOR_READ_LENGTH, GFP_KERNEL); | |
366 | if (!buf) | |
367 | return -ENOMEM; | |
3f542974 | 368 | |
84fe6e79 | 369 | /* dbg("application number is %4x", |
880af9db AC |
370 | (((__u16)port->number - (__u16)(port->serial->minor))+1)<<8); */ |
371 | /* Wval is same as application number */ | |
0de9a702 | 372 | if (port->serial->num_ports == 4) { |
3f542974 PS |
373 | Wval = |
374 | (((__u16) port->number - (__u16) (port->serial->minor)) + | |
375 | 1) << 8; | |
84fe6e79 | 376 | dbg("mos7840_get_uart_reg application number is %x", Wval); |
3f542974 PS |
377 | } else { |
378 | if (((__u16) port->number - (__u16) (port->serial->minor)) == 0) { | |
880af9db | 379 | Wval = (((__u16) port->number - |
3f542974 | 380 | (__u16) (port->serial->minor)) + 1) << 8; |
84fe6e79 | 381 | dbg("mos7840_get_uart_reg application number is %x", |
3f542974 PS |
382 | Wval); |
383 | } else { | |
880af9db | 384 | Wval = (((__u16) port->number - |
3f542974 | 385 | (__u16) (port->serial->minor)) + 2) << 8; |
84fe6e79 | 386 | dbg("mos7840_get_uart_reg application number is %x", |
3f542974 PS |
387 | Wval); |
388 | } | |
389 | } | |
390 | ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), MCS_RDREQ, | |
9e221a35 | 391 | MCS_RD_RTYPE, Wval, reg, buf, VENDOR_READ_LENGTH, |
3f542974 | 392 | MOS_WDR_TIMEOUT); |
9e221a35 JH |
393 | *val = buf[0]; |
394 | ||
395 | kfree(buf); | |
3f542974 PS |
396 | return ret; |
397 | } | |
398 | ||
399 | static void mos7840_dump_serial_port(struct moschip_port *mos7840_port) | |
400 | { | |
401 | ||
84fe6e79 TC |
402 | dbg("***************************************"); |
403 | dbg("SpRegOffset is %2x", mos7840_port->SpRegOffset); | |
404 | dbg("ControlRegOffset is %2x", mos7840_port->ControlRegOffset); | |
405 | dbg("DCRRegOffset is %2x", mos7840_port->DcrRegOffset); | |
406 | dbg("***************************************"); | |
3f542974 PS |
407 | |
408 | } | |
409 | ||
410 | /************************************************************************/ | |
411 | /************************************************************************/ | |
412 | /* I N T E R F A C E F U N C T I O N S */ | |
413 | /* I N T E R F A C E F U N C T I O N S */ | |
414 | /************************************************************************/ | |
415 | /************************************************************************/ | |
416 | ||
417 | static inline void mos7840_set_port_private(struct usb_serial_port *port, | |
418 | struct moschip_port *data) | |
419 | { | |
420 | usb_set_serial_port_data(port, (void *)data); | |
421 | } | |
422 | ||
423 | static inline struct moschip_port *mos7840_get_port_private(struct | |
424 | usb_serial_port | |
425 | *port) | |
426 | { | |
427 | return (struct moschip_port *)usb_get_serial_port_data(port); | |
428 | } | |
429 | ||
0de9a702 | 430 | static void mos7840_handle_new_msr(struct moschip_port *port, __u8 new_msr) |
3f542974 PS |
431 | { |
432 | struct moschip_port *mos7840_port; | |
433 | struct async_icount *icount; | |
434 | mos7840_port = port; | |
435 | icount = &mos7840_port->icount; | |
436 | if (new_msr & | |
437 | (MOS_MSR_DELTA_CTS | MOS_MSR_DELTA_DSR | MOS_MSR_DELTA_RI | | |
438 | MOS_MSR_DELTA_CD)) { | |
439 | icount = &mos7840_port->icount; | |
440 | ||
441 | /* update input line counters */ | |
442 | if (new_msr & MOS_MSR_DELTA_CTS) { | |
443 | icount->cts++; | |
0de9a702 | 444 | smp_wmb(); |
3f542974 PS |
445 | } |
446 | if (new_msr & MOS_MSR_DELTA_DSR) { | |
447 | icount->dsr++; | |
0de9a702 | 448 | smp_wmb(); |
3f542974 PS |
449 | } |
450 | if (new_msr & MOS_MSR_DELTA_CD) { | |
451 | icount->dcd++; | |
0de9a702 | 452 | smp_wmb(); |
3f542974 PS |
453 | } |
454 | if (new_msr & MOS_MSR_DELTA_RI) { | |
455 | icount->rng++; | |
0de9a702 | 456 | smp_wmb(); |
3f542974 PS |
457 | } |
458 | } | |
3f542974 PS |
459 | } |
460 | ||
0de9a702 | 461 | static void mos7840_handle_new_lsr(struct moschip_port *port, __u8 new_lsr) |
3f542974 PS |
462 | { |
463 | struct async_icount *icount; | |
464 | ||
441b62c1 | 465 | dbg("%s - %02x", __func__, new_lsr); |
3f542974 PS |
466 | |
467 | if (new_lsr & SERIAL_LSR_BI) { | |
880af9db AC |
468 | /* |
469 | * Parity and Framing errors only count if they | |
470 | * occur exclusive of a break being | |
471 | * received. | |
472 | */ | |
3f542974 PS |
473 | new_lsr &= (__u8) (SERIAL_LSR_OE | SERIAL_LSR_BI); |
474 | } | |
475 | ||
476 | /* update input line counters */ | |
477 | icount = &port->icount; | |
478 | if (new_lsr & SERIAL_LSR_BI) { | |
479 | icount->brk++; | |
0de9a702 | 480 | smp_wmb(); |
3f542974 PS |
481 | } |
482 | if (new_lsr & SERIAL_LSR_OE) { | |
483 | icount->overrun++; | |
0de9a702 | 484 | smp_wmb(); |
3f542974 PS |
485 | } |
486 | if (new_lsr & SERIAL_LSR_PE) { | |
487 | icount->parity++; | |
0de9a702 | 488 | smp_wmb(); |
3f542974 PS |
489 | } |
490 | if (new_lsr & SERIAL_LSR_FE) { | |
491 | icount->frame++; | |
0de9a702 | 492 | smp_wmb(); |
3f542974 | 493 | } |
3f542974 PS |
494 | } |
495 | ||
496 | /************************************************************************/ | |
497 | /************************************************************************/ | |
498 | /* U S B C A L L B A C K F U N C T I O N S */ | |
499 | /* U S B C A L L B A C K F U N C T I O N S */ | |
500 | /************************************************************************/ | |
501 | /************************************************************************/ | |
502 | ||
7d12e780 | 503 | static void mos7840_control_callback(struct urb *urb) |
3f542974 PS |
504 | { |
505 | unsigned char *data; | |
506 | struct moschip_port *mos7840_port; | |
507 | __u8 regval = 0x0; | |
0de9a702 | 508 | int result = 0; |
0643c724 | 509 | int status = urb->status; |
3f542974 | 510 | |
cdc97792 | 511 | mos7840_port = urb->context; |
0de9a702 | 512 | |
0643c724 | 513 | switch (status) { |
3f542974 PS |
514 | case 0: |
515 | /* success */ | |
516 | break; | |
517 | case -ECONNRESET: | |
518 | case -ENOENT: | |
519 | case -ESHUTDOWN: | |
520 | /* this urb is terminated, clean up */ | |
441b62c1 | 521 | dbg("%s - urb shutting down with status: %d", __func__, |
0643c724 | 522 | status); |
3f542974 PS |
523 | return; |
524 | default: | |
441b62c1 | 525 | dbg("%s - nonzero urb status received: %d", __func__, |
0643c724 | 526 | status); |
3f542974 PS |
527 | goto exit; |
528 | } | |
529 | ||
84fe6e79 TC |
530 | dbg("%s urb buffer size is %d", __func__, urb->actual_length); |
531 | dbg("%s mos7840_port->MsrLsr is %d port %d", __func__, | |
3f542974 PS |
532 | mos7840_port->MsrLsr, mos7840_port->port_num); |
533 | data = urb->transfer_buffer; | |
534 | regval = (__u8) data[0]; | |
84fe6e79 | 535 | dbg("%s data is %x", __func__, regval); |
3f542974 PS |
536 | if (mos7840_port->MsrLsr == 0) |
537 | mos7840_handle_new_msr(mos7840_port, regval); | |
538 | else if (mos7840_port->MsrLsr == 1) | |
539 | mos7840_handle_new_lsr(mos7840_port, regval); | |
540 | ||
0de9a702 ON |
541 | exit: |
542 | spin_lock(&mos7840_port->pool_lock); | |
543 | if (!mos7840_port->zombie) | |
544 | result = usb_submit_urb(mos7840_port->int_urb, GFP_ATOMIC); | |
545 | spin_unlock(&mos7840_port->pool_lock); | |
546 | if (result) { | |
547 | dev_err(&urb->dev->dev, | |
548 | "%s - Error %d submitting interrupt urb\n", | |
441b62c1 | 549 | __func__, result); |
0de9a702 | 550 | } |
3f542974 PS |
551 | } |
552 | ||
553 | static int mos7840_get_reg(struct moschip_port *mcs, __u16 Wval, __u16 reg, | |
880af9db | 554 | __u16 *val) |
3f542974 PS |
555 | { |
556 | struct usb_device *dev = mcs->port->serial->dev; | |
0de9a702 ON |
557 | struct usb_ctrlrequest *dr = mcs->dr; |
558 | unsigned char *buffer = mcs->ctrl_buf; | |
559 | int ret; | |
3f542974 | 560 | |
3f542974 PS |
561 | dr->bRequestType = MCS_RD_RTYPE; |
562 | dr->bRequest = MCS_RDREQ; | |
880af9db | 563 | dr->wValue = cpu_to_le16(Wval); /* 0 */ |
3f542974 PS |
564 | dr->wIndex = cpu_to_le16(reg); |
565 | dr->wLength = cpu_to_le16(2); | |
566 | ||
567 | usb_fill_control_urb(mcs->control_urb, dev, usb_rcvctrlpipe(dev, 0), | |
568 | (unsigned char *)dr, buffer, 2, | |
569 | mos7840_control_callback, mcs); | |
570 | mcs->control_urb->transfer_buffer_length = 2; | |
571 | ret = usb_submit_urb(mcs->control_urb, GFP_ATOMIC); | |
572 | return ret; | |
573 | } | |
574 | ||
575 | /***************************************************************************** | |
576 | * mos7840_interrupt_callback | |
577 | * this is the callback function for when we have received data on the | |
578 | * interrupt endpoint. | |
579 | *****************************************************************************/ | |
580 | ||
7d12e780 | 581 | static void mos7840_interrupt_callback(struct urb *urb) |
3f542974 PS |
582 | { |
583 | int result; | |
584 | int length; | |
585 | struct moschip_port *mos7840_port; | |
586 | struct usb_serial *serial; | |
587 | __u16 Data; | |
588 | unsigned char *data; | |
589 | __u8 sp[5], st; | |
0de9a702 ON |
590 | int i, rv = 0; |
591 | __u16 wval, wreg = 0; | |
0643c724 | 592 | int status = urb->status; |
3f542974 | 593 | |
84fe6e79 | 594 | dbg("%s", " : Entering"); |
3f542974 | 595 | |
0643c724 | 596 | switch (status) { |
3f542974 PS |
597 | case 0: |
598 | /* success */ | |
599 | break; | |
600 | case -ECONNRESET: | |
601 | case -ENOENT: | |
602 | case -ESHUTDOWN: | |
603 | /* this urb is terminated, clean up */ | |
441b62c1 | 604 | dbg("%s - urb shutting down with status: %d", __func__, |
0643c724 | 605 | status); |
3f542974 PS |
606 | return; |
607 | default: | |
441b62c1 | 608 | dbg("%s - nonzero urb status received: %d", __func__, |
0643c724 | 609 | status); |
3f542974 PS |
610 | goto exit; |
611 | } | |
612 | ||
613 | length = urb->actual_length; | |
614 | data = urb->transfer_buffer; | |
615 | ||
cdc97792 | 616 | serial = urb->context; |
3f542974 PS |
617 | |
618 | /* Moschip get 5 bytes | |
619 | * Byte 1 IIR Port 1 (port.number is 0) | |
620 | * Byte 2 IIR Port 2 (port.number is 1) | |
621 | * Byte 3 IIR Port 3 (port.number is 2) | |
622 | * Byte 4 IIR Port 4 (port.number is 3) | |
623 | * Byte 5 FIFO status for both */ | |
624 | ||
625 | if (length && length > 5) { | |
84fe6e79 | 626 | dbg("%s", "Wrong data !!!"); |
3f542974 PS |
627 | return; |
628 | } | |
629 | ||
630 | sp[0] = (__u8) data[0]; | |
631 | sp[1] = (__u8) data[1]; | |
632 | sp[2] = (__u8) data[2]; | |
633 | sp[3] = (__u8) data[3]; | |
634 | st = (__u8) data[4]; | |
635 | ||
636 | for (i = 0; i < serial->num_ports; i++) { | |
637 | mos7840_port = mos7840_get_port_private(serial->port[i]); | |
638 | wval = | |
639 | (((__u16) serial->port[i]->number - | |
640 | (__u16) (serial->minor)) + 1) << 8; | |
641 | if (mos7840_port->open) { | |
642 | if (sp[i] & 0x01) { | |
84fe6e79 | 643 | dbg("SP%d No Interrupt !!!", i); |
3f542974 PS |
644 | } else { |
645 | switch (sp[i] & 0x0f) { | |
646 | case SERIAL_IIR_RLS: | |
647 | dbg("Serial Port %d: Receiver status error or ", i); | |
84fe6e79 | 648 | dbg("address bit detected in 9-bit mode"); |
3f542974 | 649 | mos7840_port->MsrLsr = 1; |
0de9a702 | 650 | wreg = LINE_STATUS_REGISTER; |
3f542974 PS |
651 | break; |
652 | case SERIAL_IIR_MS: | |
84fe6e79 | 653 | dbg("Serial Port %d: Modem status change", i); |
3f542974 | 654 | mos7840_port->MsrLsr = 0; |
0de9a702 | 655 | wreg = MODEM_STATUS_REGISTER; |
3f542974 PS |
656 | break; |
657 | } | |
0de9a702 ON |
658 | spin_lock(&mos7840_port->pool_lock); |
659 | if (!mos7840_port->zombie) { | |
660 | rv = mos7840_get_reg(mos7840_port, wval, wreg, &Data); | |
661 | } else { | |
662 | spin_unlock(&mos7840_port->pool_lock); | |
663 | return; | |
664 | } | |
665 | spin_unlock(&mos7840_port->pool_lock); | |
3f542974 PS |
666 | } |
667 | } | |
668 | } | |
880af9db AC |
669 | if (!(rv < 0)) |
670 | /* the completion handler for the control urb will resubmit */ | |
0de9a702 ON |
671 | return; |
672 | exit: | |
3f542974 PS |
673 | result = usb_submit_urb(urb, GFP_ATOMIC); |
674 | if (result) { | |
675 | dev_err(&urb->dev->dev, | |
676 | "%s - Error %d submitting interrupt urb\n", | |
441b62c1 | 677 | __func__, result); |
3f542974 | 678 | } |
3f542974 PS |
679 | } |
680 | ||
681 | static int mos7840_port_paranoia_check(struct usb_serial_port *port, | |
682 | const char *function) | |
683 | { | |
684 | if (!port) { | |
685 | dbg("%s - port == NULL", function); | |
686 | return -1; | |
687 | } | |
688 | if (!port->serial) { | |
689 | dbg("%s - port->serial == NULL", function); | |
690 | return -1; | |
691 | } | |
692 | ||
693 | return 0; | |
694 | } | |
695 | ||
696 | /* Inline functions to check the sanity of a pointer that is passed to us */ | |
697 | static int mos7840_serial_paranoia_check(struct usb_serial *serial, | |
698 | const char *function) | |
699 | { | |
700 | if (!serial) { | |
701 | dbg("%s - serial == NULL", function); | |
702 | return -1; | |
703 | } | |
704 | if (!serial->type) { | |
705 | dbg("%s - serial->type == NULL!", function); | |
706 | return -1; | |
707 | } | |
708 | ||
709 | return 0; | |
710 | } | |
711 | ||
712 | static struct usb_serial *mos7840_get_usb_serial(struct usb_serial_port *port, | |
713 | const char *function) | |
714 | { | |
715 | /* if no port was specified, or it fails a paranoia check */ | |
716 | if (!port || | |
717 | mos7840_port_paranoia_check(port, function) || | |
718 | mos7840_serial_paranoia_check(port->serial, function)) { | |
880af9db AC |
719 | /* then say that we don't have a valid usb_serial thing, |
720 | * which will end up genrating -ENODEV return values */ | |
3f542974 PS |
721 | return NULL; |
722 | } | |
723 | ||
724 | return port->serial; | |
725 | } | |
726 | ||
727 | /***************************************************************************** | |
728 | * mos7840_bulk_in_callback | |
729 | * this is the callback function for when we have received data on the | |
730 | * bulk in endpoint. | |
731 | *****************************************************************************/ | |
732 | ||
7d12e780 | 733 | static void mos7840_bulk_in_callback(struct urb *urb) |
3f542974 | 734 | { |
0643c724 | 735 | int retval; |
3f542974 PS |
736 | unsigned char *data; |
737 | struct usb_serial *serial; | |
738 | struct usb_serial_port *port; | |
739 | struct moschip_port *mos7840_port; | |
740 | struct tty_struct *tty; | |
0643c724 | 741 | int status = urb->status; |
3f542974 | 742 | |
cdc97792 | 743 | mos7840_port = urb->context; |
3f542974 | 744 | if (!mos7840_port) { |
84fe6e79 | 745 | dbg("%s", "NULL mos7840_port pointer"); |
50de36f7 GKH |
746 | return; |
747 | } | |
748 | ||
749 | if (status) { | |
750 | dbg("nonzero read bulk status received: %d", status); | |
751 | mos7840_port->read_urb_busy = false; | |
3f542974 PS |
752 | return; |
753 | } | |
754 | ||
755 | port = (struct usb_serial_port *)mos7840_port->port; | |
441b62c1 | 756 | if (mos7840_port_paranoia_check(port, __func__)) { |
84fe6e79 | 757 | dbg("%s", "Port Paranoia failed"); |
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) { |
84fe6e79 | 764 | dbg("%s", "Bad serial pointer"); |
50de36f7 | 765 | mos7840_port->read_urb_busy = false; |
3f542974 PS |
766 | return; |
767 | } | |
768 | ||
84fe6e79 | 769 | dbg("%s", "Entering... "); |
3f542974 PS |
770 | |
771 | data = urb->transfer_buffer; | |
772 | ||
84fe6e79 | 773 | dbg("%s", "Entering ..........."); |
3f542974 PS |
774 | |
775 | if (urb->actual_length) { | |
4a90f09b | 776 | tty = tty_port_tty_get(&mos7840_port->port->port); |
3f542974 | 777 | if (tty) { |
3f542974 | 778 | tty_insert_flip_string(tty, data, urb->actual_length); |
84fe6e79 | 779 | dbg(" %s ", data); |
3f542974 | 780 | tty_flip_buffer_push(tty); |
4a90f09b | 781 | tty_kref_put(tty); |
3f542974 PS |
782 | } |
783 | mos7840_port->icount.rx += urb->actual_length; | |
0de9a702 | 784 | smp_wmb(); |
84fe6e79 | 785 | dbg("mos7840_port->icount.rx is %d:", |
3f542974 PS |
786 | mos7840_port->icount.rx); |
787 | } | |
788 | ||
789 | if (!mos7840_port->read_urb) { | |
84fe6e79 | 790 | dbg("%s", "URB KILLED !!!"); |
50de36f7 | 791 | mos7840_port->read_urb_busy = false; |
3f542974 PS |
792 | return; |
793 | } | |
794 | ||
3f542974 | 795 | |
50de36f7 | 796 | mos7840_port->read_urb_busy = true; |
0643c724 | 797 | retval = usb_submit_urb(mos7840_port->read_urb, GFP_ATOMIC); |
0de9a702 | 798 | |
0643c724 | 799 | if (retval) { |
50de36f7 GKH |
800 | dbg("usb_submit_urb(read bulk) failed, retval = %d", retval); |
801 | mos7840_port->read_urb_busy = false; | |
3f542974 PS |
802 | } |
803 | } | |
804 | ||
805 | /***************************************************************************** | |
806 | * mos7840_bulk_out_data_callback | |
880af9db AC |
807 | * this is the callback function for when we have finished sending |
808 | * serial data on the bulk out endpoint. | |
3f542974 PS |
809 | *****************************************************************************/ |
810 | ||
7d12e780 | 811 | static void mos7840_bulk_out_data_callback(struct urb *urb) |
3f542974 PS |
812 | { |
813 | struct moschip_port *mos7840_port; | |
814 | struct tty_struct *tty; | |
0643c724 | 815 | int status = urb->status; |
0de9a702 ON |
816 | int i; |
817 | ||
cdc97792 | 818 | mos7840_port = urb->context; |
0de9a702 ON |
819 | spin_lock(&mos7840_port->pool_lock); |
820 | for (i = 0; i < NUM_URBS; i++) { | |
821 | if (urb == mos7840_port->write_urb_pool[i]) { | |
822 | mos7840_port->busy[i] = 0; | |
823 | break; | |
824 | } | |
825 | } | |
826 | spin_unlock(&mos7840_port->pool_lock); | |
827 | ||
0643c724 | 828 | if (status) { |
84fe6e79 | 829 | dbg("nonzero write bulk status received:%d", status); |
3f542974 PS |
830 | return; |
831 | } | |
832 | ||
441b62c1 | 833 | if (mos7840_port_paranoia_check(mos7840_port->port, __func__)) { |
84fe6e79 | 834 | dbg("%s", "Port Paranoia failed"); |
3f542974 PS |
835 | return; |
836 | } | |
837 | ||
84fe6e79 | 838 | dbg("%s", "Entering ........."); |
3f542974 | 839 | |
4a90f09b | 840 | tty = tty_port_tty_get(&mos7840_port->port->port); |
b963a844 JS |
841 | if (tty && mos7840_port->open) |
842 | tty_wakeup(tty); | |
4a90f09b | 843 | tty_kref_put(tty); |
3f542974 PS |
844 | |
845 | } | |
846 | ||
847 | /************************************************************************/ | |
848 | /* 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 */ | |
849 | /************************************************************************/ | |
850 | #ifdef MCSSerialProbe | |
851 | static int mos7840_serial_probe(struct usb_serial *serial, | |
852 | const struct usb_device_id *id) | |
853 | { | |
854 | ||
855 | /*need to implement the mode_reg reading and updating\ | |
856 | structures usb_serial_ device_type\ | |
857 | (i.e num_ports, num_bulkin,bulkout etc) */ | |
858 | /* Also we can update the changes attach */ | |
859 | return 1; | |
860 | } | |
861 | #endif | |
862 | ||
863 | /***************************************************************************** | |
864 | * mos7840_open | |
865 | * this function is called by the tty driver when a port is opened | |
866 | * If successful, we return 0 | |
867 | * Otherwise we return a negative error number. | |
868 | *****************************************************************************/ | |
869 | ||
a509a7e4 | 870 | static int mos7840_open(struct tty_struct *tty, struct usb_serial_port *port) |
3f542974 PS |
871 | { |
872 | int response; | |
873 | int j; | |
874 | struct usb_serial *serial; | |
875 | struct urb *urb; | |
876 | __u16 Data; | |
877 | int status; | |
878 | struct moschip_port *mos7840_port; | |
0de9a702 | 879 | struct moschip_port *port0; |
3f542974 | 880 | |
84fe6e79 TC |
881 | dbg ("%s enter", __func__); |
882 | ||
441b62c1 | 883 | if (mos7840_port_paranoia_check(port, __func__)) { |
84fe6e79 | 884 | dbg("%s", "Port Paranoia failed"); |
3f542974 PS |
885 | return -ENODEV; |
886 | } | |
887 | ||
3f542974 PS |
888 | serial = port->serial; |
889 | ||
441b62c1 | 890 | if (mos7840_serial_paranoia_check(serial, __func__)) { |
84fe6e79 | 891 | dbg("%s", "Serial Paranoia failed"); |
3f542974 PS |
892 | return -ENODEV; |
893 | } | |
894 | ||
895 | mos7840_port = mos7840_get_port_private(port); | |
0de9a702 | 896 | port0 = mos7840_get_port_private(serial->port[0]); |
3f542974 | 897 | |
0de9a702 | 898 | if (mos7840_port == NULL || port0 == NULL) |
3f542974 PS |
899 | return -ENODEV; |
900 | ||
901 | usb_clear_halt(serial->dev, port->write_urb->pipe); | |
902 | usb_clear_halt(serial->dev, port->read_urb->pipe); | |
0de9a702 | 903 | port0->open_ports++; |
3f542974 PS |
904 | |
905 | /* Initialising the write urb pool */ | |
906 | for (j = 0; j < NUM_URBS; ++j) { | |
0de9a702 | 907 | urb = usb_alloc_urb(0, GFP_KERNEL); |
3f542974 PS |
908 | mos7840_port->write_urb_pool[j] = urb; |
909 | ||
910 | if (urb == NULL) { | |
194343d9 | 911 | dev_err(&port->dev, "No more urbs???\n"); |
3f542974 PS |
912 | continue; |
913 | } | |
914 | ||
880af9db AC |
915 | urb->transfer_buffer = kmalloc(URB_TRANSFER_BUFFER_SIZE, |
916 | GFP_KERNEL); | |
3f542974 | 917 | if (!urb->transfer_buffer) { |
0de9a702 ON |
918 | usb_free_urb(urb); |
919 | mos7840_port->write_urb_pool[j] = NULL; | |
194343d9 GKH |
920 | dev_err(&port->dev, |
921 | "%s-out of memory for urb buffers.\n", | |
922 | __func__); | |
3f542974 PS |
923 | continue; |
924 | } | |
925 | } | |
926 | ||
927 | /***************************************************************************** | |
928 | * Initialize MCS7840 -- Write Init values to corresponding Registers | |
929 | * | |
930 | * Register Index | |
931 | * 1 : IER | |
932 | * 2 : FCR | |
933 | * 3 : LCR | |
934 | * 4 : MCR | |
935 | * | |
936 | * 0x08 : SP1/2 Control Reg | |
937 | *****************************************************************************/ | |
938 | ||
880af9db | 939 | /* NEED to check the following Block */ |
3f542974 | 940 | |
3f542974 PS |
941 | Data = 0x0; |
942 | status = mos7840_get_reg_sync(port, mos7840_port->SpRegOffset, &Data); | |
943 | if (status < 0) { | |
84fe6e79 | 944 | dbg("Reading Spreg failed"); |
3f542974 PS |
945 | return -1; |
946 | } | |
947 | Data |= 0x80; | |
948 | status = mos7840_set_reg_sync(port, mos7840_port->SpRegOffset, Data); | |
949 | if (status < 0) { | |
84fe6e79 | 950 | dbg("writing Spreg failed"); |
3f542974 PS |
951 | return -1; |
952 | } | |
953 | ||
954 | Data &= ~0x80; | |
955 | status = mos7840_set_reg_sync(port, mos7840_port->SpRegOffset, Data); | |
956 | if (status < 0) { | |
84fe6e79 | 957 | dbg("writing Spreg failed"); |
3f542974 PS |
958 | return -1; |
959 | } | |
880af9db | 960 | /* End of block to be checked */ |
3f542974 | 961 | |
3f542974 | 962 | Data = 0x0; |
880af9db AC |
963 | status = mos7840_get_reg_sync(port, mos7840_port->ControlRegOffset, |
964 | &Data); | |
3f542974 | 965 | if (status < 0) { |
84fe6e79 | 966 | dbg("Reading Controlreg failed"); |
3f542974 PS |
967 | return -1; |
968 | } | |
880af9db AC |
969 | Data |= 0x08; /* Driver done bit */ |
970 | Data |= 0x20; /* rx_disable */ | |
971 | status = mos7840_set_reg_sync(port, | |
972 | mos7840_port->ControlRegOffset, Data); | |
3f542974 | 973 | if (status < 0) { |
84fe6e79 | 974 | dbg("writing Controlreg failed"); |
3f542974 PS |
975 | return -1; |
976 | } | |
880af9db AC |
977 | /* do register settings here */ |
978 | /* Set all regs to the device default values. */ | |
979 | /*********************************** | |
980 | * First Disable all interrupts. | |
981 | ***********************************/ | |
3f542974 | 982 | Data = 0x00; |
3f542974 PS |
983 | status = mos7840_set_uart_reg(port, INTERRUPT_ENABLE_REGISTER, Data); |
984 | if (status < 0) { | |
84fe6e79 | 985 | dbg("disabling interrupts failed"); |
3f542974 PS |
986 | return -1; |
987 | } | |
880af9db | 988 | /* Set FIFO_CONTROL_REGISTER to the default value */ |
3f542974 | 989 | Data = 0x00; |
3f542974 PS |
990 | status = mos7840_set_uart_reg(port, FIFO_CONTROL_REGISTER, Data); |
991 | if (status < 0) { | |
84fe6e79 | 992 | dbg("Writing FIFO_CONTROL_REGISTER failed"); |
3f542974 PS |
993 | return -1; |
994 | } | |
995 | ||
996 | Data = 0xcf; | |
3f542974 PS |
997 | status = mos7840_set_uart_reg(port, FIFO_CONTROL_REGISTER, Data); |
998 | if (status < 0) { | |
84fe6e79 | 999 | dbg("Writing FIFO_CONTROL_REGISTER failed"); |
3f542974 PS |
1000 | return -1; |
1001 | } | |
1002 | ||
1003 | Data = 0x03; | |
3f542974 PS |
1004 | status = mos7840_set_uart_reg(port, LINE_CONTROL_REGISTER, Data); |
1005 | mos7840_port->shadowLCR = Data; | |
1006 | ||
1007 | Data = 0x0b; | |
3f542974 PS |
1008 | status = mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, Data); |
1009 | mos7840_port->shadowMCR = Data; | |
1010 | ||
1011 | Data = 0x00; | |
3f542974 PS |
1012 | status = mos7840_get_uart_reg(port, LINE_CONTROL_REGISTER, &Data); |
1013 | mos7840_port->shadowLCR = Data; | |
1014 | ||
880af9db | 1015 | Data |= SERIAL_LCR_DLAB; /* data latch enable in LCR 0x80 */ |
3f542974 PS |
1016 | status = mos7840_set_uart_reg(port, LINE_CONTROL_REGISTER, Data); |
1017 | ||
1018 | Data = 0x0c; | |
3f542974 PS |
1019 | status = mos7840_set_uart_reg(port, DIVISOR_LATCH_LSB, Data); |
1020 | ||
1021 | Data = 0x0; | |
3f542974 PS |
1022 | status = mos7840_set_uart_reg(port, DIVISOR_LATCH_MSB, Data); |
1023 | ||
1024 | Data = 0x00; | |
3f542974 PS |
1025 | status = mos7840_get_uart_reg(port, LINE_CONTROL_REGISTER, &Data); |
1026 | ||
1027 | Data = Data & ~SERIAL_LCR_DLAB; | |
3f542974 PS |
1028 | status = mos7840_set_uart_reg(port, LINE_CONTROL_REGISTER, Data); |
1029 | mos7840_port->shadowLCR = Data; | |
1030 | ||
880af9db | 1031 | /* clearing Bulkin and Bulkout Fifo */ |
3f542974 | 1032 | Data = 0x0; |
3f542974 PS |
1033 | status = mos7840_get_reg_sync(port, mos7840_port->SpRegOffset, &Data); |
1034 | ||
1035 | Data = Data | 0x0c; | |
3f542974 PS |
1036 | status = mos7840_set_reg_sync(port, mos7840_port->SpRegOffset, Data); |
1037 | ||
1038 | Data = Data & ~0x0c; | |
3f542974 | 1039 | status = mos7840_set_reg_sync(port, mos7840_port->SpRegOffset, Data); |
880af9db | 1040 | /* Finally enable all interrupts */ |
3f542974 | 1041 | Data = 0x0c; |
3f542974 PS |
1042 | status = mos7840_set_uart_reg(port, INTERRUPT_ENABLE_REGISTER, Data); |
1043 | ||
880af9db | 1044 | /* clearing rx_disable */ |
3f542974 | 1045 | Data = 0x0; |
880af9db AC |
1046 | status = mos7840_get_reg_sync(port, mos7840_port->ControlRegOffset, |
1047 | &Data); | |
3f542974 | 1048 | Data = Data & ~0x20; |
880af9db AC |
1049 | status = mos7840_set_reg_sync(port, mos7840_port->ControlRegOffset, |
1050 | Data); | |
3f542974 | 1051 | |
880af9db | 1052 | /* rx_negate */ |
3f542974 | 1053 | Data = 0x0; |
880af9db AC |
1054 | status = mos7840_get_reg_sync(port, mos7840_port->ControlRegOffset, |
1055 | &Data); | |
3f542974 | 1056 | Data = Data | 0x10; |
880af9db AC |
1057 | status = mos7840_set_reg_sync(port, mos7840_port->ControlRegOffset, |
1058 | Data); | |
3f542974 | 1059 | |
880af9db AC |
1060 | /* Check to see if we've set up our endpoint info yet * |
1061 | * (can't set it up in mos7840_startup as the structures * | |
1062 | * were not set up at that time.) */ | |
0de9a702 | 1063 | if (port0->open_ports == 1) { |
3f542974 | 1064 | if (serial->port[0]->interrupt_in_buffer == NULL) { |
3f542974 | 1065 | /* set up interrupt urb */ |
3f542974 | 1066 | usb_fill_int_urb(serial->port[0]->interrupt_in_urb, |
880af9db AC |
1067 | serial->dev, |
1068 | usb_rcvintpipe(serial->dev, | |
1069 | serial->port[0]->interrupt_in_endpointAddress), | |
1070 | serial->port[0]->interrupt_in_buffer, | |
1071 | serial->port[0]->interrupt_in_urb-> | |
1072 | transfer_buffer_length, | |
1073 | mos7840_interrupt_callback, | |
1074 | serial, | |
1075 | serial->port[0]->interrupt_in_urb->interval); | |
3f542974 PS |
1076 | |
1077 | /* start interrupt read for mos7840 * | |
1078 | * will continue as long as mos7840 is connected */ | |
1079 | ||
1080 | response = | |
1081 | usb_submit_urb(serial->port[0]->interrupt_in_urb, | |
1082 | GFP_KERNEL); | |
1083 | if (response) { | |
194343d9 GKH |
1084 | dev_err(&port->dev, "%s - Error %d submitting " |
1085 | "interrupt urb\n", __func__, response); | |
3f542974 PS |
1086 | } |
1087 | ||
1088 | } | |
1089 | ||
1090 | } | |
1091 | ||
1092 | /* see if we've set up our endpoint info yet * | |
1093 | * (can't set it up in mos7840_startup as the * | |
1094 | * structures were not set up at that time.) */ | |
1095 | ||
84fe6e79 TC |
1096 | dbg("port number is %d", port->number); |
1097 | dbg("serial number is %d", port->serial->minor); | |
1098 | dbg("Bulkin endpoint is %d", port->bulk_in_endpointAddress); | |
1099 | dbg("BulkOut endpoint is %d", port->bulk_out_endpointAddress); | |
1100 | dbg("Interrupt endpoint is %d", port->interrupt_in_endpointAddress); | |
1101 | dbg("port's number in the device is %d", mos7840_port->port_num); | |
3f542974 PS |
1102 | mos7840_port->read_urb = port->read_urb; |
1103 | ||
1104 | /* set up our bulk in urb */ | |
093ea2d3 DL |
1105 | if ((serial->num_ports == 2) |
1106 | && ((((__u16)port->number - | |
1107 | (__u16)(port->serial->minor)) % 2) != 0)) { | |
1108 | usb_fill_bulk_urb(mos7840_port->read_urb, | |
1109 | serial->dev, | |
1110 | usb_rcvbulkpipe(serial->dev, | |
1111 | (port->bulk_in_endpointAddress) + 2), | |
1112 | port->bulk_in_buffer, | |
1113 | mos7840_port->read_urb->transfer_buffer_length, | |
1114 | mos7840_bulk_in_callback, mos7840_port); | |
1115 | } else { | |
1116 | usb_fill_bulk_urb(mos7840_port->read_urb, | |
1117 | serial->dev, | |
1118 | usb_rcvbulkpipe(serial->dev, | |
1119 | port->bulk_in_endpointAddress), | |
1120 | port->bulk_in_buffer, | |
1121 | mos7840_port->read_urb->transfer_buffer_length, | |
1122 | mos7840_bulk_in_callback, mos7840_port); | |
1123 | } | |
3f542974 | 1124 | |
84fe6e79 | 1125 | dbg("mos7840_open: bulkin endpoint is %d", |
3f542974 | 1126 | port->bulk_in_endpointAddress); |
50de36f7 | 1127 | mos7840_port->read_urb_busy = true; |
3f542974 PS |
1128 | response = usb_submit_urb(mos7840_port->read_urb, GFP_KERNEL); |
1129 | if (response) { | |
194343d9 GKH |
1130 | dev_err(&port->dev, "%s - Error %d submitting control urb\n", |
1131 | __func__, response); | |
50de36f7 | 1132 | mos7840_port->read_urb_busy = false; |
3f542974 PS |
1133 | } |
1134 | ||
1135 | /* initialize our wait queues */ | |
1136 | init_waitqueue_head(&mos7840_port->wait_chase); | |
1137 | init_waitqueue_head(&mos7840_port->delta_msr_wait); | |
1138 | ||
1139 | /* initialize our icount structure */ | |
1140 | memset(&(mos7840_port->icount), 0x00, sizeof(mos7840_port->icount)); | |
1141 | ||
1142 | /* initialize our port settings */ | |
880af9db AC |
1143 | /* Must set to enable ints! */ |
1144 | mos7840_port->shadowMCR = MCR_MASTER_IE; | |
3f542974 PS |
1145 | /* send a open port command */ |
1146 | mos7840_port->open = 1; | |
880af9db | 1147 | /* mos7840_change_port_settings(mos7840_port,old_termios); */ |
3f542974 PS |
1148 | mos7840_port->icount.tx = 0; |
1149 | mos7840_port->icount.rx = 0; | |
1150 | ||
84fe6e79 | 1151 | dbg("usb_serial serial:%p mos7840_port:%p\n usb_serial_port port:%p", |
880af9db | 1152 | serial, mos7840_port, port); |
3f542974 | 1153 | |
84fe6e79 TC |
1154 | dbg ("%s leave", __func__); |
1155 | ||
3f542974 PS |
1156 | return 0; |
1157 | ||
1158 | } | |
1159 | ||
1160 | /***************************************************************************** | |
1161 | * mos7840_chars_in_buffer | |
1162 | * this function is called by the tty driver when it wants to know how many | |
1163 | * bytes of data we currently have outstanding in the port (data that has | |
1164 | * been written, but hasn't made it out the port yet) | |
1165 | * If successful, we return the number of bytes left to be written in the | |
1166 | * system, | |
95da310e | 1167 | * Otherwise we return zero. |
3f542974 PS |
1168 | *****************************************************************************/ |
1169 | ||
95da310e | 1170 | static int mos7840_chars_in_buffer(struct tty_struct *tty) |
3f542974 | 1171 | { |
95da310e | 1172 | struct usb_serial_port *port = tty->driver_data; |
3f542974 PS |
1173 | int i; |
1174 | int chars = 0; | |
0de9a702 | 1175 | unsigned long flags; |
3f542974 PS |
1176 | struct moschip_port *mos7840_port; |
1177 | ||
84fe6e79 | 1178 | dbg("%s", " mos7840_chars_in_buffer:entering ..........."); |
3f542974 | 1179 | |
441b62c1 | 1180 | if (mos7840_port_paranoia_check(port, __func__)) { |
84fe6e79 | 1181 | dbg("%s", "Invalid port"); |
95da310e | 1182 | return 0; |
3f542974 PS |
1183 | } |
1184 | ||
1185 | mos7840_port = mos7840_get_port_private(port); | |
1186 | if (mos7840_port == NULL) { | |
84fe6e79 | 1187 | dbg("%s", "mos7840_break:leaving ..........."); |
95da310e | 1188 | return 0; |
3f542974 PS |
1189 | } |
1190 | ||
880af9db | 1191 | spin_lock_irqsave(&mos7840_port->pool_lock, flags); |
95da310e AC |
1192 | for (i = 0; i < NUM_URBS; ++i) |
1193 | if (mos7840_port->busy[i]) | |
3f542974 | 1194 | chars += URB_TRANSFER_BUFFER_SIZE; |
880af9db | 1195 | spin_unlock_irqrestore(&mos7840_port->pool_lock, flags); |
441b62c1 | 1196 | dbg("%s - returns %d", __func__, chars); |
0de9a702 | 1197 | return chars; |
3f542974 PS |
1198 | |
1199 | } | |
1200 | ||
3f542974 PS |
1201 | /***************************************************************************** |
1202 | * mos7840_close | |
1203 | * this function is called by the tty driver when a port is closed | |
1204 | *****************************************************************************/ | |
1205 | ||
335f8514 | 1206 | static void mos7840_close(struct usb_serial_port *port) |
3f542974 PS |
1207 | { |
1208 | struct usb_serial *serial; | |
1209 | struct moschip_port *mos7840_port; | |
0de9a702 | 1210 | struct moschip_port *port0; |
3f542974 PS |
1211 | int j; |
1212 | __u16 Data; | |
1213 | ||
84fe6e79 | 1214 | dbg("%s", "mos7840_close:entering..."); |
3f542974 | 1215 | |
441b62c1 | 1216 | if (mos7840_port_paranoia_check(port, __func__)) { |
84fe6e79 | 1217 | dbg("%s", "Port Paranoia failed"); |
3f542974 PS |
1218 | return; |
1219 | } | |
1220 | ||
441b62c1 | 1221 | serial = mos7840_get_usb_serial(port, __func__); |
3f542974 | 1222 | if (!serial) { |
84fe6e79 | 1223 | dbg("%s", "Serial Paranoia failed"); |
3f542974 PS |
1224 | return; |
1225 | } | |
1226 | ||
1227 | mos7840_port = mos7840_get_port_private(port); | |
0de9a702 | 1228 | port0 = mos7840_get_port_private(serial->port[0]); |
3f542974 | 1229 | |
0de9a702 | 1230 | if (mos7840_port == NULL || port0 == NULL) |
3f542974 | 1231 | return; |
3f542974 PS |
1232 | |
1233 | for (j = 0; j < NUM_URBS; ++j) | |
1234 | usb_kill_urb(mos7840_port->write_urb_pool[j]); | |
1235 | ||
1236 | /* Freeing Write URBs */ | |
1237 | for (j = 0; j < NUM_URBS; ++j) { | |
1238 | if (mos7840_port->write_urb_pool[j]) { | |
1239 | if (mos7840_port->write_urb_pool[j]->transfer_buffer) | |
1240 | kfree(mos7840_port->write_urb_pool[j]-> | |
1241 | transfer_buffer); | |
1242 | ||
1243 | usb_free_urb(mos7840_port->write_urb_pool[j]); | |
1244 | } | |
1245 | } | |
1246 | ||
3f542974 PS |
1247 | /* While closing port, shutdown all bulk read, write * |
1248 | * and interrupt read if they exists */ | |
1249 | if (serial->dev) { | |
3f542974 | 1250 | if (mos7840_port->write_urb) { |
84fe6e79 | 1251 | dbg("%s", "Shutdown bulk write"); |
3f542974 PS |
1252 | usb_kill_urb(mos7840_port->write_urb); |
1253 | } | |
3f542974 | 1254 | if (mos7840_port->read_urb) { |
84fe6e79 | 1255 | dbg("%s", "Shutdown bulk read"); |
3f542974 | 1256 | usb_kill_urb(mos7840_port->read_urb); |
50de36f7 | 1257 | mos7840_port->read_urb_busy = false; |
3f542974 PS |
1258 | } |
1259 | if ((&mos7840_port->control_urb)) { | |
84fe6e79 | 1260 | dbg("%s", "Shutdown control read"); |
880af9db | 1261 | /*/ usb_kill_urb (mos7840_port->control_urb); */ |
3f542974 PS |
1262 | } |
1263 | } | |
880af9db AC |
1264 | /* if(mos7840_port->ctrl_buf != NULL) */ |
1265 | /* kfree(mos7840_port->ctrl_buf); */ | |
0de9a702 | 1266 | port0->open_ports--; |
84fe6e79 | 1267 | dbg("mos7840_num_open_ports in close%d:in port%d", |
0de9a702 ON |
1268 | port0->open_ports, port->number); |
1269 | if (port0->open_ports == 0) { | |
3f542974 | 1270 | if (serial->port[0]->interrupt_in_urb) { |
84fe6e79 | 1271 | dbg("%s", "Shutdown interrupt_in_urb"); |
0de9a702 | 1272 | usb_kill_urb(serial->port[0]->interrupt_in_urb); |
3f542974 PS |
1273 | } |
1274 | } | |
1275 | ||
1276 | if (mos7840_port->write_urb) { | |
1277 | /* if this urb had a transfer buffer already (old tx) free it */ | |
880af9db | 1278 | if (mos7840_port->write_urb->transfer_buffer != NULL) |
3f542974 | 1279 | kfree(mos7840_port->write_urb->transfer_buffer); |
3f542974 PS |
1280 | usb_free_urb(mos7840_port->write_urb); |
1281 | } | |
1282 | ||
1283 | Data = 0x0; | |
1284 | mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, Data); | |
1285 | ||
1286 | Data = 0x00; | |
1287 | mos7840_set_uart_reg(port, INTERRUPT_ENABLE_REGISTER, Data); | |
1288 | ||
1289 | mos7840_port->open = 0; | |
1290 | ||
84fe6e79 | 1291 | dbg("%s", "Leaving ............"); |
3f542974 PS |
1292 | } |
1293 | ||
1294 | /************************************************************************ | |
1295 | * | |
1296 | * mos7840_block_until_chase_response | |
1297 | * | |
1298 | * This function will block the close until one of the following: | |
1299 | * 1. Response to our Chase comes from mos7840 | |
dc0d5c1e | 1300 | * 2. A timeout of 10 seconds without activity has expired |
3f542974 PS |
1301 | * (1K of mos7840 data @ 2400 baud ==> 4 sec to empty) |
1302 | * | |
1303 | ************************************************************************/ | |
1304 | ||
95da310e AC |
1305 | static void mos7840_block_until_chase_response(struct tty_struct *tty, |
1306 | struct moschip_port *mos7840_port) | |
3f542974 PS |
1307 | { |
1308 | int timeout = 1 * HZ; | |
1309 | int wait = 10; | |
1310 | int count; | |
1311 | ||
1312 | while (1) { | |
95da310e | 1313 | count = mos7840_chars_in_buffer(tty); |
3f542974 PS |
1314 | |
1315 | /* Check for Buffer status */ | |
880af9db | 1316 | if (count <= 0) |
3f542974 | 1317 | return; |
3f542974 PS |
1318 | |
1319 | /* Block the thread for a while */ | |
1320 | interruptible_sleep_on_timeout(&mos7840_port->wait_chase, | |
1321 | timeout); | |
1322 | /* No activity.. count down section */ | |
1323 | wait--; | |
1324 | if (wait == 0) { | |
441b62c1 | 1325 | dbg("%s - TIMEOUT", __func__); |
3f542974 PS |
1326 | return; |
1327 | } else { | |
dc0d5c1e | 1328 | /* Reset timeout value back to seconds */ |
3f542974 PS |
1329 | wait = 10; |
1330 | } | |
1331 | } | |
1332 | ||
1333 | } | |
1334 | ||
1335 | /***************************************************************************** | |
1336 | * mos7840_break | |
1337 | * this function sends a break to the port | |
1338 | *****************************************************************************/ | |
95da310e | 1339 | static void mos7840_break(struct tty_struct *tty, int break_state) |
3f542974 | 1340 | { |
95da310e | 1341 | struct usb_serial_port *port = tty->driver_data; |
3f542974 PS |
1342 | unsigned char data; |
1343 | struct usb_serial *serial; | |
1344 | struct moschip_port *mos7840_port; | |
1345 | ||
84fe6e79 TC |
1346 | dbg("%s", "Entering ..........."); |
1347 | dbg("mos7840_break: Start"); | |
3f542974 | 1348 | |
441b62c1 | 1349 | if (mos7840_port_paranoia_check(port, __func__)) { |
84fe6e79 | 1350 | dbg("%s", "Port Paranoia failed"); |
3f542974 PS |
1351 | return; |
1352 | } | |
1353 | ||
441b62c1 | 1354 | serial = mos7840_get_usb_serial(port, __func__); |
3f542974 | 1355 | if (!serial) { |
84fe6e79 | 1356 | dbg("%s", "Serial Paranoia failed"); |
3f542974 PS |
1357 | return; |
1358 | } | |
1359 | ||
1360 | mos7840_port = mos7840_get_port_private(port); | |
1361 | ||
880af9db | 1362 | if (mos7840_port == NULL) |
3f542974 | 1363 | return; |
3f542974 | 1364 | |
95da310e | 1365 | if (serial->dev) |
3f542974 | 1366 | /* flush and block until tx is empty */ |
95da310e | 1367 | mos7840_block_until_chase_response(tty, mos7840_port); |
3f542974 | 1368 | |
95da310e | 1369 | if (break_state == -1) |
3f542974 | 1370 | data = mos7840_port->shadowLCR | LCR_SET_BREAK; |
95da310e | 1371 | else |
3f542974 | 1372 | data = mos7840_port->shadowLCR & ~LCR_SET_BREAK; |
3f542974 | 1373 | |
6b447f04 | 1374 | /* FIXME: no locking on shadowLCR anywhere in driver */ |
3f542974 | 1375 | mos7840_port->shadowLCR = data; |
84fe6e79 | 1376 | dbg("mcs7840_break mos7840_port->shadowLCR is %x", |
3f542974 PS |
1377 | mos7840_port->shadowLCR); |
1378 | mos7840_set_uart_reg(port, LINE_CONTROL_REGISTER, | |
1379 | mos7840_port->shadowLCR); | |
3f542974 PS |
1380 | } |
1381 | ||
1382 | /***************************************************************************** | |
1383 | * mos7840_write_room | |
1384 | * this function is called by the tty driver when it wants to know how many | |
1385 | * bytes of data we can accept for a specific port. | |
1386 | * If successful, we return the amount of room that we have for this port | |
1387 | * Otherwise we return a negative error number. | |
1388 | *****************************************************************************/ | |
1389 | ||
95da310e | 1390 | static int mos7840_write_room(struct tty_struct *tty) |
3f542974 | 1391 | { |
95da310e | 1392 | struct usb_serial_port *port = tty->driver_data; |
3f542974 PS |
1393 | int i; |
1394 | int room = 0; | |
0de9a702 | 1395 | unsigned long flags; |
3f542974 PS |
1396 | struct moschip_port *mos7840_port; |
1397 | ||
84fe6e79 | 1398 | dbg("%s", " mos7840_write_room:entering ..........."); |
3f542974 | 1399 | |
441b62c1 | 1400 | if (mos7840_port_paranoia_check(port, __func__)) { |
84fe6e79 TC |
1401 | dbg("%s", "Invalid port"); |
1402 | dbg("%s", " mos7840_write_room:leaving ..........."); | |
3f542974 PS |
1403 | return -1; |
1404 | } | |
1405 | ||
1406 | mos7840_port = mos7840_get_port_private(port); | |
1407 | if (mos7840_port == NULL) { | |
84fe6e79 | 1408 | dbg("%s", "mos7840_break:leaving ..........."); |
3f542974 PS |
1409 | return -1; |
1410 | } | |
1411 | ||
0de9a702 | 1412 | spin_lock_irqsave(&mos7840_port->pool_lock, flags); |
3f542974 | 1413 | for (i = 0; i < NUM_URBS; ++i) { |
880af9db | 1414 | if (!mos7840_port->busy[i]) |
3f542974 | 1415 | room += URB_TRANSFER_BUFFER_SIZE; |
3f542974 | 1416 | } |
0de9a702 | 1417 | spin_unlock_irqrestore(&mos7840_port->pool_lock, flags); |
3f542974 | 1418 | |
0de9a702 | 1419 | room = (room == 0) ? 0 : room - URB_TRANSFER_BUFFER_SIZE + 1; |
441b62c1 | 1420 | dbg("%s - returns %d", __func__, room); |
0de9a702 | 1421 | return room; |
3f542974 PS |
1422 | |
1423 | } | |
1424 | ||
1425 | /***************************************************************************** | |
1426 | * mos7840_write | |
1427 | * this function is called by the tty driver when data should be written to | |
1428 | * the port. | |
1429 | * If successful, we return the number of bytes written, otherwise we | |
1430 | * return a negative error number. | |
1431 | *****************************************************************************/ | |
1432 | ||
95da310e | 1433 | static int mos7840_write(struct tty_struct *tty, struct usb_serial_port *port, |
3f542974 PS |
1434 | const unsigned char *data, int count) |
1435 | { | |
1436 | int status; | |
1437 | int i; | |
1438 | int bytes_sent = 0; | |
1439 | int transfer_size; | |
0de9a702 | 1440 | unsigned long flags; |
3f542974 PS |
1441 | |
1442 | struct moschip_port *mos7840_port; | |
1443 | struct usb_serial *serial; | |
1444 | struct urb *urb; | |
880af9db | 1445 | /* __u16 Data; */ |
3f542974 PS |
1446 | const unsigned char *current_position = data; |
1447 | unsigned char *data1; | |
84fe6e79 TC |
1448 | dbg("%s", "entering ..........."); |
1449 | /* dbg("mos7840_write: mos7840_port->shadowLCR is %x", | |
880af9db | 1450 | mos7840_port->shadowLCR); */ |
3f542974 PS |
1451 | |
1452 | #ifdef NOTMOS7840 | |
1453 | Data = 0x00; | |
3f542974 PS |
1454 | status = mos7840_get_uart_reg(port, LINE_CONTROL_REGISTER, &Data); |
1455 | mos7840_port->shadowLCR = Data; | |
84fe6e79 TC |
1456 | dbg("mos7840_write: LINE_CONTROL_REGISTER is %x", Data); |
1457 | dbg("mos7840_write: mos7840_port->shadowLCR is %x", | |
3f542974 PS |
1458 | mos7840_port->shadowLCR); |
1459 | ||
880af9db AC |
1460 | /* Data = 0x03; */ |
1461 | /* status = mos7840_set_uart_reg(port,LINE_CONTROL_REGISTER,Data); */ | |
1462 | /* mos7840_port->shadowLCR=Data;//Need to add later */ | |
3f542974 | 1463 | |
880af9db | 1464 | Data |= SERIAL_LCR_DLAB; /* data latch enable in LCR 0x80 */ |
3f542974 PS |
1465 | status = mos7840_set_uart_reg(port, LINE_CONTROL_REGISTER, Data); |
1466 | ||
880af9db AC |
1467 | /* Data = 0x0c; */ |
1468 | /* status = mos7840_set_uart_reg(port,DIVISOR_LATCH_LSB,Data); */ | |
3f542974 | 1469 | Data = 0x00; |
3f542974 | 1470 | status = mos7840_get_uart_reg(port, DIVISOR_LATCH_LSB, &Data); |
84fe6e79 | 1471 | dbg("mos7840_write:DLL value is %x", Data); |
3f542974 PS |
1472 | |
1473 | Data = 0x0; | |
3f542974 | 1474 | status = mos7840_get_uart_reg(port, DIVISOR_LATCH_MSB, &Data); |
84fe6e79 | 1475 | dbg("mos7840_write:DLM value is %x", Data); |
3f542974 PS |
1476 | |
1477 | Data = Data & ~SERIAL_LCR_DLAB; | |
84fe6e79 | 1478 | dbg("mos7840_write: mos7840_port->shadowLCR is %x", |
3f542974 | 1479 | mos7840_port->shadowLCR); |
3f542974 PS |
1480 | status = mos7840_set_uart_reg(port, LINE_CONTROL_REGISTER, Data); |
1481 | #endif | |
1482 | ||
441b62c1 | 1483 | if (mos7840_port_paranoia_check(port, __func__)) { |
84fe6e79 | 1484 | dbg("%s", "Port Paranoia failed"); |
3f542974 PS |
1485 | return -1; |
1486 | } | |
1487 | ||
1488 | serial = port->serial; | |
441b62c1 | 1489 | if (mos7840_serial_paranoia_check(serial, __func__)) { |
84fe6e79 | 1490 | dbg("%s", "Serial Paranoia failed"); |
3f542974 PS |
1491 | return -1; |
1492 | } | |
1493 | ||
1494 | mos7840_port = mos7840_get_port_private(port); | |
1495 | if (mos7840_port == NULL) { | |
84fe6e79 | 1496 | dbg("%s", "mos7840_port is NULL"); |
3f542974 PS |
1497 | return -1; |
1498 | } | |
1499 | ||
1500 | /* try to find a free urb in the list */ | |
1501 | urb = NULL; | |
1502 | ||
0de9a702 | 1503 | spin_lock_irqsave(&mos7840_port->pool_lock, flags); |
3f542974 | 1504 | for (i = 0; i < NUM_URBS; ++i) { |
0de9a702 ON |
1505 | if (!mos7840_port->busy[i]) { |
1506 | mos7840_port->busy[i] = 1; | |
3f542974 | 1507 | urb = mos7840_port->write_urb_pool[i]; |
84fe6e79 | 1508 | dbg("URB:%d", i); |
3f542974 PS |
1509 | break; |
1510 | } | |
1511 | } | |
0de9a702 | 1512 | spin_unlock_irqrestore(&mos7840_port->pool_lock, flags); |
3f542974 PS |
1513 | |
1514 | if (urb == NULL) { | |
441b62c1 | 1515 | dbg("%s - no more free urbs", __func__); |
3f542974 PS |
1516 | goto exit; |
1517 | } | |
1518 | ||
1519 | if (urb->transfer_buffer == NULL) { | |
1520 | urb->transfer_buffer = | |
1521 | kmalloc(URB_TRANSFER_BUFFER_SIZE, GFP_KERNEL); | |
1522 | ||
1523 | if (urb->transfer_buffer == NULL) { | |
22a416c4 | 1524 | dev_err_console(port, "%s no more kernel memory...\n", |
194343d9 | 1525 | __func__); |
3f542974 PS |
1526 | goto exit; |
1527 | } | |
1528 | } | |
1529 | transfer_size = min(count, URB_TRANSFER_BUFFER_SIZE); | |
1530 | ||
97c4965d | 1531 | memcpy(urb->transfer_buffer, current_position, transfer_size); |
3f542974 PS |
1532 | |
1533 | /* fill urb with data and submit */ | |
093ea2d3 DL |
1534 | if ((serial->num_ports == 2) |
1535 | && ((((__u16)port->number - | |
1536 | (__u16)(port->serial->minor)) % 2) != 0)) { | |
1537 | usb_fill_bulk_urb(urb, | |
1538 | serial->dev, | |
1539 | usb_sndbulkpipe(serial->dev, | |
1540 | (port->bulk_out_endpointAddress) + 2), | |
1541 | urb->transfer_buffer, | |
1542 | transfer_size, | |
1543 | mos7840_bulk_out_data_callback, mos7840_port); | |
1544 | } else { | |
1545 | usb_fill_bulk_urb(urb, | |
1546 | serial->dev, | |
1547 | usb_sndbulkpipe(serial->dev, | |
1548 | port->bulk_out_endpointAddress), | |
1549 | urb->transfer_buffer, | |
1550 | transfer_size, | |
1551 | mos7840_bulk_out_data_callback, mos7840_port); | |
1552 | } | |
3f542974 PS |
1553 | |
1554 | data1 = urb->transfer_buffer; | |
84fe6e79 | 1555 | dbg("bulkout endpoint is %d", port->bulk_out_endpointAddress); |
3f542974 PS |
1556 | |
1557 | /* send it down the pipe */ | |
1558 | status = usb_submit_urb(urb, GFP_ATOMIC); | |
1559 | ||
1560 | if (status) { | |
0de9a702 | 1561 | mos7840_port->busy[i] = 0; |
22a416c4 | 1562 | dev_err_console(port, "%s - usb_submit_urb(write bulk) failed " |
194343d9 | 1563 | "with status = %d\n", __func__, status); |
3f542974 PS |
1564 | bytes_sent = status; |
1565 | goto exit; | |
1566 | } | |
1567 | bytes_sent = transfer_size; | |
1568 | mos7840_port->icount.tx += transfer_size; | |
0de9a702 | 1569 | smp_wmb(); |
84fe6e79 | 1570 | dbg("mos7840_port->icount.tx is %d:", mos7840_port->icount.tx); |
95da310e | 1571 | exit: |
3f542974 PS |
1572 | return bytes_sent; |
1573 | ||
1574 | } | |
1575 | ||
1576 | /***************************************************************************** | |
1577 | * mos7840_throttle | |
1578 | * this function is called by the tty driver when it wants to stop the data | |
1579 | * being read from the port. | |
1580 | *****************************************************************************/ | |
1581 | ||
95da310e | 1582 | static void mos7840_throttle(struct tty_struct *tty) |
3f542974 | 1583 | { |
95da310e | 1584 | struct usb_serial_port *port = tty->driver_data; |
3f542974 | 1585 | struct moschip_port *mos7840_port; |
3f542974 PS |
1586 | int status; |
1587 | ||
441b62c1 | 1588 | if (mos7840_port_paranoia_check(port, __func__)) { |
84fe6e79 | 1589 | dbg("%s", "Invalid port"); |
3f542974 PS |
1590 | return; |
1591 | } | |
1592 | ||
84fe6e79 | 1593 | dbg("- port %d", port->number); |
3f542974 PS |
1594 | |
1595 | mos7840_port = mos7840_get_port_private(port); | |
1596 | ||
1597 | if (mos7840_port == NULL) | |
1598 | return; | |
1599 | ||
1600 | if (!mos7840_port->open) { | |
84fe6e79 | 1601 | dbg("%s", "port not opened"); |
3f542974 PS |
1602 | return; |
1603 | } | |
1604 | ||
84fe6e79 | 1605 | dbg("%s", "Entering .........."); |
3f542974 | 1606 | |
3f542974 PS |
1607 | /* if we are implementing XON/XOFF, send the stop character */ |
1608 | if (I_IXOFF(tty)) { | |
1609 | unsigned char stop_char = STOP_CHAR(tty); | |
95da310e AC |
1610 | status = mos7840_write(tty, port, &stop_char, 1); |
1611 | if (status <= 0) | |
3f542974 | 1612 | return; |
3f542974 | 1613 | } |
3f542974 PS |
1614 | /* if we are implementing RTS/CTS, toggle that line */ |
1615 | if (tty->termios->c_cflag & CRTSCTS) { | |
1616 | mos7840_port->shadowMCR &= ~MCR_RTS; | |
95da310e | 1617 | status = mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, |
3f542974 | 1618 | mos7840_port->shadowMCR); |
95da310e | 1619 | if (status < 0) |
3f542974 | 1620 | return; |
3f542974 | 1621 | } |
3f542974 PS |
1622 | } |
1623 | ||
1624 | /***************************************************************************** | |
1625 | * mos7840_unthrottle | |
880af9db AC |
1626 | * this function is called by the tty driver when it wants to resume |
1627 | * the data being read from the port (called after mos7840_throttle is | |
1628 | * called) | |
3f542974 | 1629 | *****************************************************************************/ |
95da310e | 1630 | static void mos7840_unthrottle(struct tty_struct *tty) |
3f542974 | 1631 | { |
95da310e | 1632 | struct usb_serial_port *port = tty->driver_data; |
3f542974 PS |
1633 | int status; |
1634 | struct moschip_port *mos7840_port = mos7840_get_port_private(port); | |
1635 | ||
441b62c1 | 1636 | if (mos7840_port_paranoia_check(port, __func__)) { |
84fe6e79 | 1637 | dbg("%s", "Invalid port"); |
3f542974 PS |
1638 | return; |
1639 | } | |
1640 | ||
1641 | if (mos7840_port == NULL) | |
1642 | return; | |
1643 | ||
1644 | if (!mos7840_port->open) { | |
441b62c1 | 1645 | dbg("%s - port not opened", __func__); |
3f542974 PS |
1646 | return; |
1647 | } | |
1648 | ||
84fe6e79 | 1649 | dbg("%s", "Entering .........."); |
3f542974 | 1650 | |
3f542974 PS |
1651 | /* if we are implementing XON/XOFF, send the start character */ |
1652 | if (I_IXOFF(tty)) { | |
1653 | unsigned char start_char = START_CHAR(tty); | |
95da310e AC |
1654 | status = mos7840_write(tty, port, &start_char, 1); |
1655 | if (status <= 0) | |
3f542974 | 1656 | return; |
3f542974 PS |
1657 | } |
1658 | ||
1659 | /* if we are implementing RTS/CTS, toggle that line */ | |
1660 | if (tty->termios->c_cflag & CRTSCTS) { | |
1661 | mos7840_port->shadowMCR |= MCR_RTS; | |
95da310e | 1662 | status = mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, |
3f542974 | 1663 | mos7840_port->shadowMCR); |
95da310e | 1664 | if (status < 0) |
3f542974 | 1665 | return; |
3f542974 | 1666 | } |
3f542974 PS |
1667 | } |
1668 | ||
60b33c13 | 1669 | static int mos7840_tiocmget(struct tty_struct *tty) |
3f542974 | 1670 | { |
95da310e | 1671 | struct usb_serial_port *port = tty->driver_data; |
3f542974 PS |
1672 | struct moschip_port *mos7840_port; |
1673 | unsigned int result; | |
1674 | __u16 msr; | |
1675 | __u16 mcr; | |
880af9db | 1676 | int status; |
3f542974 PS |
1677 | mos7840_port = mos7840_get_port_private(port); |
1678 | ||
441b62c1 | 1679 | dbg("%s - port %d", __func__, port->number); |
3f542974 PS |
1680 | |
1681 | if (mos7840_port == NULL) | |
1682 | return -ENODEV; | |
1683 | ||
1684 | status = mos7840_get_uart_reg(port, MODEM_STATUS_REGISTER, &msr); | |
1685 | status = mos7840_get_uart_reg(port, MODEM_CONTROL_REGISTER, &mcr); | |
1686 | result = ((mcr & MCR_DTR) ? TIOCM_DTR : 0) | |
1687 | | ((mcr & MCR_RTS) ? TIOCM_RTS : 0) | |
1688 | | ((mcr & MCR_LOOPBACK) ? TIOCM_LOOP : 0) | |
1689 | | ((msr & MOS7840_MSR_CTS) ? TIOCM_CTS : 0) | |
1690 | | ((msr & MOS7840_MSR_CD) ? TIOCM_CAR : 0) | |
1691 | | ((msr & MOS7840_MSR_RI) ? TIOCM_RI : 0) | |
1692 | | ((msr & MOS7840_MSR_DSR) ? TIOCM_DSR : 0); | |
1693 | ||
441b62c1 | 1694 | dbg("%s - 0x%04X", __func__, result); |
3f542974 PS |
1695 | |
1696 | return result; | |
1697 | } | |
1698 | ||
20b9d177 | 1699 | static int mos7840_tiocmset(struct tty_struct *tty, |
3f542974 PS |
1700 | unsigned int set, unsigned int clear) |
1701 | { | |
95da310e | 1702 | struct usb_serial_port *port = tty->driver_data; |
3f542974 PS |
1703 | struct moschip_port *mos7840_port; |
1704 | unsigned int mcr; | |
87521c46 | 1705 | int status; |
3f542974 | 1706 | |
441b62c1 | 1707 | dbg("%s - port %d", __func__, port->number); |
3f542974 PS |
1708 | |
1709 | mos7840_port = mos7840_get_port_private(port); | |
1710 | ||
1711 | if (mos7840_port == NULL) | |
1712 | return -ENODEV; | |
1713 | ||
e2984494 | 1714 | /* FIXME: What locks the port registers ? */ |
3f542974 PS |
1715 | mcr = mos7840_port->shadowMCR; |
1716 | if (clear & TIOCM_RTS) | |
1717 | mcr &= ~MCR_RTS; | |
1718 | if (clear & TIOCM_DTR) | |
1719 | mcr &= ~MCR_DTR; | |
1720 | if (clear & TIOCM_LOOP) | |
1721 | mcr &= ~MCR_LOOPBACK; | |
1722 | ||
1723 | if (set & TIOCM_RTS) | |
1724 | mcr |= MCR_RTS; | |
1725 | if (set & TIOCM_DTR) | |
1726 | mcr |= MCR_DTR; | |
1727 | if (set & TIOCM_LOOP) | |
1728 | mcr |= MCR_LOOPBACK; | |
1729 | ||
1730 | mos7840_port->shadowMCR = mcr; | |
1731 | ||
3f542974 PS |
1732 | status = mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, mcr); |
1733 | if (status < 0) { | |
84fe6e79 | 1734 | dbg("setting MODEM_CONTROL_REGISTER Failed"); |
87521c46 | 1735 | return status; |
3f542974 PS |
1736 | } |
1737 | ||
1738 | return 0; | |
1739 | } | |
1740 | ||
1741 | /***************************************************************************** | |
1742 | * mos7840_calc_baud_rate_divisor | |
1743 | * this function calculates the proper baud rate divisor for the specified | |
1744 | * baud rate. | |
1745 | *****************************************************************************/ | |
1746 | static int mos7840_calc_baud_rate_divisor(int baudRate, int *divisor, | |
880af9db | 1747 | __u16 *clk_sel_val) |
3f542974 PS |
1748 | { |
1749 | ||
441b62c1 | 1750 | dbg("%s - %d", __func__, baudRate); |
3f542974 PS |
1751 | |
1752 | if (baudRate <= 115200) { | |
1753 | *divisor = 115200 / baudRate; | |
1754 | *clk_sel_val = 0x0; | |
1755 | } | |
1756 | if ((baudRate > 115200) && (baudRate <= 230400)) { | |
1757 | *divisor = 230400 / baudRate; | |
1758 | *clk_sel_val = 0x10; | |
1759 | } else if ((baudRate > 230400) && (baudRate <= 403200)) { | |
1760 | *divisor = 403200 / baudRate; | |
1761 | *clk_sel_val = 0x20; | |
1762 | } else if ((baudRate > 403200) && (baudRate <= 460800)) { | |
1763 | *divisor = 460800 / baudRate; | |
1764 | *clk_sel_val = 0x30; | |
1765 | } else if ((baudRate > 460800) && (baudRate <= 806400)) { | |
1766 | *divisor = 806400 / baudRate; | |
1767 | *clk_sel_val = 0x40; | |
1768 | } else if ((baudRate > 806400) && (baudRate <= 921600)) { | |
1769 | *divisor = 921600 / baudRate; | |
1770 | *clk_sel_val = 0x50; | |
1771 | } else if ((baudRate > 921600) && (baudRate <= 1572864)) { | |
1772 | *divisor = 1572864 / baudRate; | |
1773 | *clk_sel_val = 0x60; | |
1774 | } else if ((baudRate > 1572864) && (baudRate <= 3145728)) { | |
1775 | *divisor = 3145728 / baudRate; | |
1776 | *clk_sel_val = 0x70; | |
1777 | } | |
1778 | return 0; | |
1779 | ||
1780 | #ifdef NOTMCS7840 | |
1781 | ||
1782 | for (i = 0; i < ARRAY_SIZE(mos7840_divisor_table); i++) { | |
1783 | if (mos7840_divisor_table[i].BaudRate == baudrate) { | |
1784 | *divisor = mos7840_divisor_table[i].Divisor; | |
1785 | return 0; | |
1786 | } | |
1787 | } | |
1788 | ||
1789 | /* After trying for all the standard baud rates * | |
1790 | * Try calculating the divisor for this baud rate */ | |
1791 | ||
1792 | if (baudrate > 75 && baudrate < 230400) { | |
1793 | /* get the divisor */ | |
1794 | custom = (__u16) (230400L / baudrate); | |
1795 | ||
1796 | /* Check for round off */ | |
1797 | round1 = (__u16) (2304000L / baudrate); | |
1798 | round = (__u16) (round1 - (custom * 10)); | |
880af9db | 1799 | if (round > 4) |
3f542974 | 1800 | custom++; |
3f542974 PS |
1801 | *divisor = custom; |
1802 | ||
84fe6e79 | 1803 | dbg(" Baud %d = %d", baudrate, custom); |
3f542974 PS |
1804 | return 0; |
1805 | } | |
1806 | ||
84fe6e79 | 1807 | dbg("%s", " Baud calculation Failed..."); |
3f542974 PS |
1808 | return -1; |
1809 | #endif | |
1810 | } | |
1811 | ||
1812 | /***************************************************************************** | |
1813 | * mos7840_send_cmd_write_baud_rate | |
1814 | * this function sends the proper command to change the baud rate of the | |
1815 | * specified port. | |
1816 | *****************************************************************************/ | |
1817 | ||
1818 | static int mos7840_send_cmd_write_baud_rate(struct moschip_port *mos7840_port, | |
1819 | int baudRate) | |
1820 | { | |
1821 | int divisor = 0; | |
1822 | int status; | |
1823 | __u16 Data; | |
1824 | unsigned char number; | |
1825 | __u16 clk_sel_val; | |
1826 | struct usb_serial_port *port; | |
1827 | ||
1828 | if (mos7840_port == NULL) | |
1829 | return -1; | |
1830 | ||
1831 | port = (struct usb_serial_port *)mos7840_port->port; | |
441b62c1 | 1832 | if (mos7840_port_paranoia_check(port, __func__)) { |
84fe6e79 | 1833 | dbg("%s", "Invalid port"); |
3f542974 PS |
1834 | return -1; |
1835 | } | |
1836 | ||
441b62c1 | 1837 | if (mos7840_serial_paranoia_check(port->serial, __func__)) { |
84fe6e79 | 1838 | dbg("%s", "Invalid Serial"); |
3f542974 PS |
1839 | return -1; |
1840 | } | |
1841 | ||
84fe6e79 | 1842 | dbg("%s", "Entering .........."); |
3f542974 PS |
1843 | |
1844 | number = mos7840_port->port->number - mos7840_port->port->serial->minor; | |
1845 | ||
441b62c1 | 1846 | dbg("%s - port = %d, baud = %d", __func__, |
3f542974 | 1847 | mos7840_port->port->number, baudRate); |
880af9db | 1848 | /* reset clk_uart_sel in spregOffset */ |
3f542974 PS |
1849 | if (baudRate > 115200) { |
1850 | #ifdef HW_flow_control | |
880af9db AC |
1851 | /* NOTE: need to see the pther register to modify */ |
1852 | /* setting h/w flow control bit to 1 */ | |
3f542974 PS |
1853 | Data = 0x2b; |
1854 | mos7840_port->shadowMCR = Data; | |
880af9db AC |
1855 | status = mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, |
1856 | Data); | |
3f542974 | 1857 | if (status < 0) { |
84fe6e79 | 1858 | dbg("Writing spreg failed in set_serial_baud"); |
3f542974 PS |
1859 | return -1; |
1860 | } | |
1861 | #endif | |
1862 | ||
1863 | } else { | |
1864 | #ifdef HW_flow_control | |
093ea2d3 | 1865 | /* setting h/w flow control bit to 0 */ |
3f542974 PS |
1866 | Data = 0xb; |
1867 | mos7840_port->shadowMCR = Data; | |
880af9db AC |
1868 | status = mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, |
1869 | Data); | |
3f542974 | 1870 | if (status < 0) { |
84fe6e79 | 1871 | dbg("Writing spreg failed in set_serial_baud"); |
3f542974 PS |
1872 | return -1; |
1873 | } | |
1874 | #endif | |
1875 | ||
1876 | } | |
1877 | ||
880af9db | 1878 | if (1) { /* baudRate <= 115200) */ |
3f542974 PS |
1879 | clk_sel_val = 0x0; |
1880 | Data = 0x0; | |
880af9db | 1881 | status = mos7840_calc_baud_rate_divisor(baudRate, &divisor, |
3f542974 | 1882 | &clk_sel_val); |
880af9db AC |
1883 | status = mos7840_get_reg_sync(port, mos7840_port->SpRegOffset, |
1884 | &Data); | |
3f542974 | 1885 | if (status < 0) { |
84fe6e79 | 1886 | dbg("reading spreg failed in set_serial_baud"); |
3f542974 PS |
1887 | return -1; |
1888 | } | |
1889 | Data = (Data & 0x8f) | clk_sel_val; | |
880af9db AC |
1890 | status = mos7840_set_reg_sync(port, mos7840_port->SpRegOffset, |
1891 | Data); | |
3f542974 | 1892 | if (status < 0) { |
84fe6e79 | 1893 | dbg("Writing spreg failed in set_serial_baud"); |
3f542974 PS |
1894 | return -1; |
1895 | } | |
1896 | /* Calculate the Divisor */ | |
1897 | ||
1898 | if (status) { | |
194343d9 | 1899 | dev_err(&port->dev, "%s - bad baud rate\n", __func__); |
3f542974 PS |
1900 | return status; |
1901 | } | |
1902 | /* Enable access to divisor latch */ | |
1903 | Data = mos7840_port->shadowLCR | SERIAL_LCR_DLAB; | |
1904 | mos7840_port->shadowLCR = Data; | |
1905 | mos7840_set_uart_reg(port, LINE_CONTROL_REGISTER, Data); | |
1906 | ||
1907 | /* Write the divisor */ | |
1908 | Data = (unsigned char)(divisor & 0xff); | |
84fe6e79 | 1909 | dbg("set_serial_baud Value to write DLL is %x", Data); |
3f542974 PS |
1910 | mos7840_set_uart_reg(port, DIVISOR_LATCH_LSB, Data); |
1911 | ||
1912 | Data = (unsigned char)((divisor & 0xff00) >> 8); | |
84fe6e79 | 1913 | dbg("set_serial_baud Value to write DLM is %x", Data); |
3f542974 PS |
1914 | mos7840_set_uart_reg(port, DIVISOR_LATCH_MSB, Data); |
1915 | ||
1916 | /* Disable access to divisor latch */ | |
1917 | Data = mos7840_port->shadowLCR & ~SERIAL_LCR_DLAB; | |
1918 | mos7840_port->shadowLCR = Data; | |
1919 | mos7840_set_uart_reg(port, LINE_CONTROL_REGISTER, Data); | |
1920 | ||
1921 | } | |
3f542974 PS |
1922 | return status; |
1923 | } | |
1924 | ||
1925 | /***************************************************************************** | |
1926 | * mos7840_change_port_settings | |
1927 | * This routine is called to set the UART on the device to match | |
1928 | * the specified new settings. | |
1929 | *****************************************************************************/ | |
1930 | ||
95da310e AC |
1931 | static void mos7840_change_port_settings(struct tty_struct *tty, |
1932 | struct moschip_port *mos7840_port, struct ktermios *old_termios) | |
3f542974 | 1933 | { |
3f542974 PS |
1934 | int baud; |
1935 | unsigned cflag; | |
1936 | unsigned iflag; | |
1937 | __u8 lData; | |
1938 | __u8 lParity; | |
1939 | __u8 lStop; | |
1940 | int status; | |
1941 | __u16 Data; | |
1942 | struct usb_serial_port *port; | |
1943 | struct usb_serial *serial; | |
1944 | ||
1945 | if (mos7840_port == NULL) | |
1946 | return; | |
1947 | ||
1948 | port = (struct usb_serial_port *)mos7840_port->port; | |
1949 | ||
441b62c1 | 1950 | if (mos7840_port_paranoia_check(port, __func__)) { |
84fe6e79 | 1951 | dbg("%s", "Invalid port"); |
3f542974 PS |
1952 | return; |
1953 | } | |
1954 | ||
441b62c1 | 1955 | if (mos7840_serial_paranoia_check(port->serial, __func__)) { |
84fe6e79 | 1956 | dbg("%s", "Invalid Serial"); |
3f542974 PS |
1957 | return; |
1958 | } | |
1959 | ||
1960 | serial = port->serial; | |
1961 | ||
441b62c1 | 1962 | dbg("%s - port %d", __func__, mos7840_port->port->number); |
3f542974 PS |
1963 | |
1964 | if (!mos7840_port->open) { | |
441b62c1 | 1965 | dbg("%s - port not opened", __func__); |
3f542974 PS |
1966 | return; |
1967 | } | |
1968 | ||
84fe6e79 | 1969 | dbg("%s", "Entering .........."); |
3f542974 PS |
1970 | |
1971 | lData = LCR_BITS_8; | |
1972 | lStop = LCR_STOP_1; | |
1973 | lParity = LCR_PAR_NONE; | |
1974 | ||
1975 | cflag = tty->termios->c_cflag; | |
1976 | iflag = tty->termios->c_iflag; | |
1977 | ||
1978 | /* Change the number of bits */ | |
1979 | if (cflag & CSIZE) { | |
1980 | switch (cflag & CSIZE) { | |
1981 | case CS5: | |
1982 | lData = LCR_BITS_5; | |
1983 | break; | |
1984 | ||
1985 | case CS6: | |
1986 | lData = LCR_BITS_6; | |
1987 | break; | |
1988 | ||
1989 | case CS7: | |
1990 | lData = LCR_BITS_7; | |
1991 | break; | |
1992 | default: | |
1993 | case CS8: | |
1994 | lData = LCR_BITS_8; | |
1995 | break; | |
1996 | } | |
1997 | } | |
1998 | /* Change the Parity bit */ | |
1999 | if (cflag & PARENB) { | |
2000 | if (cflag & PARODD) { | |
2001 | lParity = LCR_PAR_ODD; | |
441b62c1 | 2002 | dbg("%s - parity = odd", __func__); |
3f542974 PS |
2003 | } else { |
2004 | lParity = LCR_PAR_EVEN; | |
441b62c1 | 2005 | dbg("%s - parity = even", __func__); |
3f542974 PS |
2006 | } |
2007 | ||
2008 | } else { | |
441b62c1 | 2009 | dbg("%s - parity = none", __func__); |
3f542974 PS |
2010 | } |
2011 | ||
880af9db | 2012 | if (cflag & CMSPAR) |
3f542974 | 2013 | lParity = lParity | 0x20; |
3f542974 PS |
2014 | |
2015 | /* Change the Stop bit */ | |
2016 | if (cflag & CSTOPB) { | |
2017 | lStop = LCR_STOP_2; | |
441b62c1 | 2018 | dbg("%s - stop bits = 2", __func__); |
3f542974 PS |
2019 | } else { |
2020 | lStop = LCR_STOP_1; | |
441b62c1 | 2021 | dbg("%s - stop bits = 1", __func__); |
3f542974 PS |
2022 | } |
2023 | ||
2024 | /* Update the LCR with the correct value */ | |
2025 | mos7840_port->shadowLCR &= | |
2026 | ~(LCR_BITS_MASK | LCR_STOP_MASK | LCR_PAR_MASK); | |
2027 | mos7840_port->shadowLCR |= (lData | lParity | lStop); | |
2028 | ||
84fe6e79 | 2029 | dbg("mos7840_change_port_settings mos7840_port->shadowLCR is %x", |
3f542974 PS |
2030 | mos7840_port->shadowLCR); |
2031 | /* Disable Interrupts */ | |
2032 | Data = 0x00; | |
2033 | mos7840_set_uart_reg(port, INTERRUPT_ENABLE_REGISTER, Data); | |
2034 | ||
2035 | Data = 0x00; | |
2036 | mos7840_set_uart_reg(port, FIFO_CONTROL_REGISTER, Data); | |
2037 | ||
2038 | Data = 0xcf; | |
2039 | mos7840_set_uart_reg(port, FIFO_CONTROL_REGISTER, Data); | |
2040 | ||
2041 | /* Send the updated LCR value to the mos7840 */ | |
2042 | Data = mos7840_port->shadowLCR; | |
2043 | ||
2044 | mos7840_set_uart_reg(port, LINE_CONTROL_REGISTER, Data); | |
2045 | ||
2046 | Data = 0x00b; | |
2047 | mos7840_port->shadowMCR = Data; | |
2048 | mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, Data); | |
2049 | Data = 0x00b; | |
2050 | mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, Data); | |
2051 | ||
2052 | /* set up the MCR register and send it to the mos7840 */ | |
2053 | ||
2054 | mos7840_port->shadowMCR = MCR_MASTER_IE; | |
880af9db | 2055 | if (cflag & CBAUD) |
3f542974 | 2056 | mos7840_port->shadowMCR |= (MCR_DTR | MCR_RTS); |
3f542974 | 2057 | |
880af9db | 2058 | if (cflag & CRTSCTS) |
3f542974 | 2059 | mos7840_port->shadowMCR |= (MCR_XON_ANY); |
880af9db | 2060 | else |
3f542974 | 2061 | mos7840_port->shadowMCR &= ~(MCR_XON_ANY); |
3f542974 PS |
2062 | |
2063 | Data = mos7840_port->shadowMCR; | |
2064 | mos7840_set_uart_reg(port, MODEM_CONTROL_REGISTER, Data); | |
2065 | ||
2066 | /* Determine divisor based on baud rate */ | |
2067 | baud = tty_get_baud_rate(tty); | |
2068 | ||
2069 | if (!baud) { | |
2070 | /* pick a default, any default... */ | |
84fe6e79 | 2071 | dbg("%s", "Picked default baud..."); |
3f542974 PS |
2072 | baud = 9600; |
2073 | } | |
2074 | ||
441b62c1 | 2075 | dbg("%s - baud rate = %d", __func__, baud); |
3f542974 PS |
2076 | status = mos7840_send_cmd_write_baud_rate(mos7840_port, baud); |
2077 | ||
2078 | /* Enable Interrupts */ | |
2079 | Data = 0x0c; | |
2080 | mos7840_set_uart_reg(port, INTERRUPT_ENABLE_REGISTER, Data); | |
2081 | ||
50de36f7 | 2082 | if (mos7840_port->read_urb_busy == false) { |
50de36f7 | 2083 | mos7840_port->read_urb_busy = true; |
3f542974 | 2084 | status = usb_submit_urb(mos7840_port->read_urb, GFP_ATOMIC); |
3f542974 | 2085 | if (status) { |
50de36f7 | 2086 | dbg("usb_submit_urb(read bulk) failed, status = %d", |
3f542974 | 2087 | status); |
50de36f7 | 2088 | mos7840_port->read_urb_busy = false; |
3f542974 PS |
2089 | } |
2090 | } | |
2091 | wake_up(&mos7840_port->delta_msr_wait); | |
2092 | mos7840_port->delta_msr_cond = 1; | |
84fe6e79 | 2093 | dbg("mos7840_change_port_settings mos7840_port->shadowLCR is End %x", |
3f542974 | 2094 | mos7840_port->shadowLCR); |
3f542974 PS |
2095 | } |
2096 | ||
2097 | /***************************************************************************** | |
2098 | * mos7840_set_termios | |
2099 | * this function is called by the tty driver when it wants to change | |
2100 | * the termios structure | |
2101 | *****************************************************************************/ | |
2102 | ||
95da310e AC |
2103 | static void mos7840_set_termios(struct tty_struct *tty, |
2104 | struct usb_serial_port *port, | |
606d099c | 2105 | struct ktermios *old_termios) |
3f542974 PS |
2106 | { |
2107 | int status; | |
2108 | unsigned int cflag; | |
2109 | struct usb_serial *serial; | |
2110 | struct moschip_port *mos7840_port; | |
84fe6e79 | 2111 | dbg("mos7840_set_termios: START"); |
441b62c1 | 2112 | if (mos7840_port_paranoia_check(port, __func__)) { |
84fe6e79 | 2113 | dbg("%s", "Invalid port"); |
3f542974 PS |
2114 | return; |
2115 | } | |
2116 | ||
2117 | serial = port->serial; | |
2118 | ||
441b62c1 | 2119 | if (mos7840_serial_paranoia_check(serial, __func__)) { |
84fe6e79 | 2120 | dbg("%s", "Invalid Serial"); |
3f542974 PS |
2121 | return; |
2122 | } | |
2123 | ||
2124 | mos7840_port = mos7840_get_port_private(port); | |
2125 | ||
2126 | if (mos7840_port == NULL) | |
2127 | return; | |
2128 | ||
3f542974 | 2129 | if (!mos7840_port->open) { |
441b62c1 | 2130 | dbg("%s - port not opened", __func__); |
3f542974 PS |
2131 | return; |
2132 | } | |
2133 | ||
84fe6e79 | 2134 | dbg("%s", "setting termios - "); |
3f542974 PS |
2135 | |
2136 | cflag = tty->termios->c_cflag; | |
2137 | ||
441b62c1 | 2138 | dbg("%s - clfag %08x iflag %08x", __func__, |
3f542974 | 2139 | tty->termios->c_cflag, RELEVANT_IFLAG(tty->termios->c_iflag)); |
441b62c1 | 2140 | dbg("%s - old clfag %08x old iflag %08x", __func__, |
3d3ddce5 | 2141 | old_termios->c_cflag, RELEVANT_IFLAG(old_termios->c_iflag)); |
441b62c1 | 2142 | dbg("%s - port %d", __func__, port->number); |
3f542974 PS |
2143 | |
2144 | /* change the port settings to the new ones specified */ | |
2145 | ||
95da310e | 2146 | mos7840_change_port_settings(tty, mos7840_port, old_termios); |
3f542974 PS |
2147 | |
2148 | if (!mos7840_port->read_urb) { | |
84fe6e79 | 2149 | dbg("%s", "URB KILLED !!!!!"); |
3f542974 PS |
2150 | return; |
2151 | } | |
2152 | ||
50de36f7 | 2153 | if (mos7840_port->read_urb_busy == false) { |
50de36f7 | 2154 | mos7840_port->read_urb_busy = true; |
3f542974 PS |
2155 | status = usb_submit_urb(mos7840_port->read_urb, GFP_ATOMIC); |
2156 | if (status) { | |
50de36f7 | 2157 | dbg("usb_submit_urb(read bulk) failed, status = %d", |
3f542974 | 2158 | status); |
50de36f7 | 2159 | mos7840_port->read_urb_busy = false; |
3f542974 PS |
2160 | } |
2161 | } | |
3f542974 PS |
2162 | } |
2163 | ||
2164 | /***************************************************************************** | |
2165 | * mos7840_get_lsr_info - get line status register info | |
2166 | * | |
2167 | * Purpose: Let user call ioctl() to get info when the UART physically | |
2168 | * is emptied. On bus types like RS485, the transmitter must | |
2169 | * release the bus after transmitting. This must be done when | |
2170 | * the transmit shift register is empty, not be done when the | |
2171 | * transmit holding register is empty. This functionality | |
2172 | * allows an RS485 driver to be written in user space. | |
2173 | *****************************************************************************/ | |
2174 | ||
95da310e | 2175 | static int mos7840_get_lsr_info(struct tty_struct *tty, |
97c4965d | 2176 | unsigned int __user *value) |
3f542974 PS |
2177 | { |
2178 | int count; | |
2179 | unsigned int result = 0; | |
2180 | ||
95da310e | 2181 | count = mos7840_chars_in_buffer(tty); |
3f542974 | 2182 | if (count == 0) { |
441b62c1 | 2183 | dbg("%s -- Empty", __func__); |
3f542974 PS |
2184 | result = TIOCSER_TEMT; |
2185 | } | |
2186 | ||
2187 | if (copy_to_user(value, &result, sizeof(int))) | |
2188 | return -EFAULT; | |
2189 | return 0; | |
2190 | } | |
2191 | ||
3f542974 PS |
2192 | /***************************************************************************** |
2193 | * mos7840_get_serial_info | |
2194 | * function to get information about serial port | |
2195 | *****************************************************************************/ | |
2196 | ||
2197 | static int mos7840_get_serial_info(struct moschip_port *mos7840_port, | |
97c4965d | 2198 | struct serial_struct __user *retinfo) |
3f542974 PS |
2199 | { |
2200 | struct serial_struct tmp; | |
2201 | ||
2202 | if (mos7840_port == NULL) | |
2203 | return -1; | |
2204 | ||
2205 | if (!retinfo) | |
2206 | return -EFAULT; | |
2207 | ||
2208 | memset(&tmp, 0, sizeof(tmp)); | |
2209 | ||
2210 | tmp.type = PORT_16550A; | |
2211 | tmp.line = mos7840_port->port->serial->minor; | |
2212 | tmp.port = mos7840_port->port->number; | |
2213 | tmp.irq = 0; | |
2214 | tmp.flags = ASYNC_SKIP_TEST | ASYNC_AUTO_IRQ; | |
2215 | tmp.xmit_fifo_size = NUM_URBS * URB_TRANSFER_BUFFER_SIZE; | |
2216 | tmp.baud_base = 9600; | |
2217 | tmp.close_delay = 5 * HZ; | |
2218 | tmp.closing_wait = 30 * HZ; | |
2219 | ||
2220 | if (copy_to_user(retinfo, &tmp, sizeof(*retinfo))) | |
2221 | return -EFAULT; | |
2222 | return 0; | |
2223 | } | |
2224 | ||
0bca1b91 AC |
2225 | static int mos7840_get_icount(struct tty_struct *tty, |
2226 | struct serial_icounter_struct *icount) | |
2227 | { | |
2228 | struct usb_serial_port *port = tty->driver_data; | |
2229 | struct moschip_port *mos7840_port; | |
2230 | struct async_icount cnow; | |
2231 | ||
2232 | mos7840_port = mos7840_get_port_private(port); | |
2233 | cnow = mos7840_port->icount; | |
2234 | ||
2235 | smp_rmb(); | |
2236 | icount->cts = cnow.cts; | |
2237 | icount->dsr = cnow.dsr; | |
2238 | icount->rng = cnow.rng; | |
2239 | icount->dcd = cnow.dcd; | |
2240 | icount->rx = cnow.rx; | |
2241 | icount->tx = cnow.tx; | |
2242 | icount->frame = cnow.frame; | |
2243 | icount->overrun = cnow.overrun; | |
2244 | icount->parity = cnow.parity; | |
2245 | icount->brk = cnow.brk; | |
2246 | icount->buf_overrun = cnow.buf_overrun; | |
2247 | ||
2248 | dbg("%s (%d) TIOCGICOUNT RX=%d, TX=%d", __func__, | |
2249 | port->number, icount->rx, icount->tx); | |
2250 | return 0; | |
2251 | } | |
2252 | ||
3f542974 PS |
2253 | /***************************************************************************** |
2254 | * SerialIoctl | |
2255 | * this function handles any ioctl calls to the driver | |
2256 | *****************************************************************************/ | |
2257 | ||
00a0d0d6 | 2258 | static int mos7840_ioctl(struct tty_struct *tty, |
3f542974 PS |
2259 | unsigned int cmd, unsigned long arg) |
2260 | { | |
95da310e | 2261 | struct usb_serial_port *port = tty->driver_data; |
97c4965d | 2262 | void __user *argp = (void __user *)arg; |
3f542974 | 2263 | struct moschip_port *mos7840_port; |
3f542974 PS |
2264 | |
2265 | struct async_icount cnow; | |
2266 | struct async_icount cprev; | |
3f542974 | 2267 | |
441b62c1 | 2268 | if (mos7840_port_paranoia_check(port, __func__)) { |
84fe6e79 | 2269 | dbg("%s", "Invalid port"); |
3f542974 PS |
2270 | return -1; |
2271 | } | |
2272 | ||
2273 | mos7840_port = mos7840_get_port_private(port); | |
3f542974 PS |
2274 | |
2275 | if (mos7840_port == NULL) | |
2276 | return -1; | |
2277 | ||
441b62c1 | 2278 | dbg("%s - port %d, cmd = 0x%x", __func__, port->number, cmd); |
3f542974 PS |
2279 | |
2280 | switch (cmd) { | |
2281 | /* return number of bytes available */ | |
2282 | ||
3f542974 | 2283 | case TIOCSERGETLSR: |
441b62c1 | 2284 | dbg("%s (%d) TIOCSERGETLSR", __func__, port->number); |
95da310e | 2285 | return mos7840_get_lsr_info(tty, argp); |
3f542974 | 2286 | |
3f542974 | 2287 | case TIOCGSERIAL: |
441b62c1 | 2288 | dbg("%s (%d) TIOCGSERIAL", __func__, port->number); |
97c4965d | 2289 | return mos7840_get_serial_info(mos7840_port, argp); |
3f542974 PS |
2290 | |
2291 | case TIOCSSERIAL: | |
441b62c1 | 2292 | dbg("%s (%d) TIOCSSERIAL", __func__, port->number); |
3f542974 PS |
2293 | break; |
2294 | ||
2295 | case TIOCMIWAIT: | |
441b62c1 | 2296 | dbg("%s (%d) TIOCMIWAIT", __func__, port->number); |
3f542974 PS |
2297 | cprev = mos7840_port->icount; |
2298 | while (1) { | |
880af9db | 2299 | /* interruptible_sleep_on(&mos7840_port->delta_msr_wait); */ |
3f542974 PS |
2300 | mos7840_port->delta_msr_cond = 0; |
2301 | wait_event_interruptible(mos7840_port->delta_msr_wait, | |
2302 | (mos7840_port-> | |
2303 | delta_msr_cond == 1)); | |
2304 | ||
2305 | /* see if a signal did it */ | |
2306 | if (signal_pending(current)) | |
2307 | return -ERESTARTSYS; | |
2308 | cnow = mos7840_port->icount; | |
0de9a702 | 2309 | smp_rmb(); |
3f542974 PS |
2310 | if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr && |
2311 | cnow.dcd == cprev.dcd && cnow.cts == cprev.cts) | |
2312 | return -EIO; /* no change => error */ | |
2313 | if (((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) || | |
2314 | ((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) || | |
2315 | ((arg & TIOCM_CD) && (cnow.dcd != cprev.dcd)) || | |
2316 | ((arg & TIOCM_CTS) && (cnow.cts != cprev.cts))) { | |
2317 | return 0; | |
2318 | } | |
2319 | cprev = cnow; | |
2320 | } | |
2321 | /* NOTREACHED */ | |
2322 | break; | |
2323 | ||
3f542974 PS |
2324 | default: |
2325 | break; | |
2326 | } | |
3f542974 PS |
2327 | return -ENOIOCTLCMD; |
2328 | } | |
2329 | ||
2330 | static int mos7840_calc_num_ports(struct usb_serial *serial) | |
2331 | { | |
093ea2d3 DL |
2332 | __u16 Data = 0x00; |
2333 | int ret = 0; | |
2334 | int mos7840_num_ports; | |
2335 | ||
2336 | ret = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), | |
2337 | MCS_RDREQ, MCS_RD_RTYPE, 0, GPIO_REGISTER, &Data, | |
2338 | VENDOR_READ_LENGTH, MOS_WDR_TIMEOUT); | |
2339 | ||
2340 | if ((Data & 0x01) == 0) { | |
2341 | mos7840_num_ports = 2; | |
2342 | serial->num_bulk_in = 2; | |
2343 | serial->num_bulk_out = 2; | |
2344 | serial->num_ports = 2; | |
2345 | } else { | |
2346 | mos7840_num_ports = 4; | |
0de9a702 ON |
2347 | serial->num_bulk_in = 4; |
2348 | serial->num_bulk_out = 4; | |
093ea2d3 | 2349 | serial->num_ports = 4; |
3f542974 | 2350 | } |
093ea2d3 | 2351 | |
3f542974 PS |
2352 | return mos7840_num_ports; |
2353 | } | |
2354 | ||
2355 | /**************************************************************************** | |
2356 | * mos7840_startup | |
2357 | ****************************************************************************/ | |
2358 | ||
2359 | static int mos7840_startup(struct usb_serial *serial) | |
2360 | { | |
2361 | struct moschip_port *mos7840_port; | |
2362 | struct usb_device *dev; | |
2363 | int i, status; | |
2364 | ||
2365 | __u16 Data; | |
84fe6e79 | 2366 | dbg("%s", "mos7840_startup :Entering.........."); |
3f542974 PS |
2367 | |
2368 | if (!serial) { | |
84fe6e79 | 2369 | dbg("%s", "Invalid Handler"); |
3f542974 PS |
2370 | return -1; |
2371 | } | |
2372 | ||
2373 | dev = serial->dev; | |
2374 | ||
84fe6e79 TC |
2375 | dbg("%s", "Entering..."); |
2376 | dbg ("mos7840_startup: serial = %p", serial); | |
3f542974 PS |
2377 | |
2378 | /* we set up the pointers to the endpoints in the mos7840_open * | |
2379 | * function, as the structures aren't created yet. */ | |
2380 | ||
2381 | /* set up port private structures */ | |
2382 | for (i = 0; i < serial->num_ports; ++i) { | |
84fe6e79 | 2383 | dbg ("mos7840_startup: configuring port %d............", i); |
7ac9da10 | 2384 | mos7840_port = kzalloc(sizeof(struct moschip_port), GFP_KERNEL); |
3f542974 | 2385 | if (mos7840_port == NULL) { |
194343d9 | 2386 | dev_err(&dev->dev, "%s - Out of memory\n", __func__); |
0de9a702 ON |
2387 | status = -ENOMEM; |
2388 | i--; /* don't follow NULL pointer cleaning up */ | |
2389 | goto error; | |
3f542974 | 2390 | } |
3f542974 | 2391 | |
880af9db AC |
2392 | /* Initialize all port interrupt end point to port 0 int |
2393 | * endpoint. Our device has only one interrupt end point | |
2394 | * common to all port */ | |
3f542974 PS |
2395 | |
2396 | mos7840_port->port = serial->port[i]; | |
2397 | mos7840_set_port_private(serial->port[i], mos7840_port); | |
0de9a702 | 2398 | spin_lock_init(&mos7840_port->pool_lock); |
3f542974 | 2399 | |
37768adf TC |
2400 | /* minor is not initialised until later by |
2401 | * usb-serial.c:get_free_serial() and cannot therefore be used | |
2402 | * to index device instances */ | |
2403 | mos7840_port->port_num = i + 1; | |
2404 | dbg ("serial->port[i]->number = %d", serial->port[i]->number); | |
2405 | dbg ("serial->port[i]->serial->minor = %d", serial->port[i]->serial->minor); | |
2406 | dbg ("mos7840_port->port_num = %d", mos7840_port->port_num); | |
2407 | dbg ("serial->minor = %d", serial->minor); | |
3f542974 PS |
2408 | |
2409 | if (mos7840_port->port_num == 1) { | |
2410 | mos7840_port->SpRegOffset = 0x0; | |
2411 | mos7840_port->ControlRegOffset = 0x1; | |
2412 | mos7840_port->DcrRegOffset = 0x4; | |
2413 | } else if ((mos7840_port->port_num == 2) | |
0de9a702 | 2414 | && (serial->num_ports == 4)) { |
3f542974 PS |
2415 | mos7840_port->SpRegOffset = 0x8; |
2416 | mos7840_port->ControlRegOffset = 0x9; | |
2417 | mos7840_port->DcrRegOffset = 0x16; | |
2418 | } else if ((mos7840_port->port_num == 2) | |
0de9a702 | 2419 | && (serial->num_ports == 2)) { |
3f542974 PS |
2420 | mos7840_port->SpRegOffset = 0xa; |
2421 | mos7840_port->ControlRegOffset = 0xb; | |
2422 | mos7840_port->DcrRegOffset = 0x19; | |
2423 | } else if ((mos7840_port->port_num == 3) | |
0de9a702 | 2424 | && (serial->num_ports == 4)) { |
3f542974 PS |
2425 | mos7840_port->SpRegOffset = 0xa; |
2426 | mos7840_port->ControlRegOffset = 0xb; | |
2427 | mos7840_port->DcrRegOffset = 0x19; | |
2428 | } else if ((mos7840_port->port_num == 4) | |
0de9a702 | 2429 | && (serial->num_ports == 4)) { |
3f542974 PS |
2430 | mos7840_port->SpRegOffset = 0xc; |
2431 | mos7840_port->ControlRegOffset = 0xd; | |
2432 | mos7840_port->DcrRegOffset = 0x1c; | |
2433 | } | |
2434 | mos7840_dump_serial_port(mos7840_port); | |
3f542974 PS |
2435 | mos7840_set_port_private(serial->port[i], mos7840_port); |
2436 | ||
880af9db AC |
2437 | /* enable rx_disable bit in control register */ |
2438 | status = mos7840_get_reg_sync(serial->port[i], | |
2439 | mos7840_port->ControlRegOffset, &Data); | |
3f542974 | 2440 | if (status < 0) { |
84fe6e79 | 2441 | dbg("Reading ControlReg failed status-0x%x", status); |
3f542974 PS |
2442 | break; |
2443 | } else | |
84fe6e79 | 2444 | dbg("ControlReg Reading success val is %x, status%d", |
3f542974 | 2445 | Data, status); |
880af9db AC |
2446 | Data |= 0x08; /* setting driver done bit */ |
2447 | Data |= 0x04; /* sp1_bit to have cts change reflect in | |
2448 | modem status reg */ | |
3f542974 | 2449 | |
880af9db AC |
2450 | /* Data |= 0x20; //rx_disable bit */ |
2451 | status = mos7840_set_reg_sync(serial->port[i], | |
3f542974 PS |
2452 | mos7840_port->ControlRegOffset, Data); |
2453 | if (status < 0) { | |
84fe6e79 | 2454 | dbg("Writing ControlReg failed(rx_disable) status-0x%x", status); |
3f542974 PS |
2455 | break; |
2456 | } else | |
84fe6e79 | 2457 | dbg("ControlReg Writing success(rx_disable) status%d", |
3f542974 PS |
2458 | status); |
2459 | ||
880af9db AC |
2460 | /* Write default values in DCR (i.e 0x01 in DCR0, 0x05 in DCR2 |
2461 | and 0x24 in DCR3 */ | |
3f542974 | 2462 | Data = 0x01; |
880af9db AC |
2463 | status = mos7840_set_reg_sync(serial->port[i], |
2464 | (__u16) (mos7840_port->DcrRegOffset + 0), Data); | |
3f542974 | 2465 | if (status < 0) { |
84fe6e79 | 2466 | dbg("Writing DCR0 failed status-0x%x", status); |
3f542974 PS |
2467 | break; |
2468 | } else | |
84fe6e79 | 2469 | dbg("DCR0 Writing success status%d", status); |
3f542974 PS |
2470 | |
2471 | Data = 0x05; | |
880af9db AC |
2472 | status = mos7840_set_reg_sync(serial->port[i], |
2473 | (__u16) (mos7840_port->DcrRegOffset + 1), Data); | |
3f542974 | 2474 | if (status < 0) { |
84fe6e79 | 2475 | dbg("Writing DCR1 failed status-0x%x", status); |
3f542974 PS |
2476 | break; |
2477 | } else | |
84fe6e79 | 2478 | dbg("DCR1 Writing success status%d", status); |
3f542974 PS |
2479 | |
2480 | Data = 0x24; | |
880af9db AC |
2481 | status = mos7840_set_reg_sync(serial->port[i], |
2482 | (__u16) (mos7840_port->DcrRegOffset + 2), Data); | |
3f542974 | 2483 | if (status < 0) { |
84fe6e79 | 2484 | dbg("Writing DCR2 failed status-0x%x", status); |
3f542974 PS |
2485 | break; |
2486 | } else | |
84fe6e79 | 2487 | dbg("DCR2 Writing success status%d", status); |
3f542974 | 2488 | |
880af9db | 2489 | /* write values in clkstart0x0 and clkmulti 0x20 */ |
3f542974 | 2490 | Data = 0x0; |
880af9db | 2491 | status = mos7840_set_reg_sync(serial->port[i], |
3f542974 PS |
2492 | CLK_START_VALUE_REGISTER, Data); |
2493 | if (status < 0) { | |
84fe6e79 | 2494 | dbg("Writing CLK_START_VALUE_REGISTER failed status-0x%x", status); |
3f542974 PS |
2495 | break; |
2496 | } else | |
84fe6e79 | 2497 | dbg("CLK_START_VALUE_REGISTER Writing success status%d", status); |
3f542974 PS |
2498 | |
2499 | Data = 0x20; | |
880af9db AC |
2500 | status = mos7840_set_reg_sync(serial->port[i], |
2501 | CLK_MULTI_REGISTER, Data); | |
3f542974 | 2502 | if (status < 0) { |
84fe6e79 | 2503 | dbg("Writing CLK_MULTI_REGISTER failed status-0x%x", |
3f542974 | 2504 | status); |
0de9a702 | 2505 | goto error; |
3f542974 | 2506 | } else |
84fe6e79 | 2507 | dbg("CLK_MULTI_REGISTER Writing success status%d", |
3f542974 PS |
2508 | status); |
2509 | ||
880af9db | 2510 | /* write value 0x0 to scratchpad register */ |
3f542974 | 2511 | Data = 0x00; |
880af9db AC |
2512 | status = mos7840_set_uart_reg(serial->port[i], |
2513 | SCRATCH_PAD_REGISTER, Data); | |
3f542974 | 2514 | if (status < 0) { |
84fe6e79 | 2515 | dbg("Writing SCRATCH_PAD_REGISTER failed status-0x%x", |
3f542974 PS |
2516 | status); |
2517 | break; | |
2518 | } else | |
84fe6e79 | 2519 | dbg("SCRATCH_PAD_REGISTER Writing success status%d", |
3f542974 PS |
2520 | status); |
2521 | ||
880af9db | 2522 | /* Zero Length flag register */ |
3f542974 | 2523 | if ((mos7840_port->port_num != 1) |
0de9a702 | 2524 | && (serial->num_ports == 2)) { |
3f542974 PS |
2525 | |
2526 | Data = 0xff; | |
3f542974 | 2527 | status = mos7840_set_reg_sync(serial->port[i], |
880af9db AC |
2528 | (__u16) (ZLP_REG1 + |
2529 | ((__u16)mos7840_port->port_num)), Data); | |
84fe6e79 | 2530 | dbg("ZLIP offset %x", |
3f542974 | 2531 | (__u16) (ZLP_REG1 + |
880af9db | 2532 | ((__u16) mos7840_port->port_num))); |
3f542974 | 2533 | if (status < 0) { |
84fe6e79 | 2534 | dbg("Writing ZLP_REG%d failed status-0x%x", |
3f542974 PS |
2535 | i + 2, status); |
2536 | break; | |
2537 | } else | |
84fe6e79 | 2538 | dbg("ZLP_REG%d Writing success status%d", |
3f542974 PS |
2539 | i + 2, status); |
2540 | } else { | |
2541 | Data = 0xff; | |
3f542974 | 2542 | status = mos7840_set_reg_sync(serial->port[i], |
880af9db AC |
2543 | (__u16) (ZLP_REG1 + |
2544 | ((__u16)mos7840_port->port_num) - 0x1), Data); | |
84fe6e79 | 2545 | dbg("ZLIP offset %x", |
3f542974 PS |
2546 | (__u16) (ZLP_REG1 + |
2547 | ((__u16) mos7840_port->port_num) - 0x1)); | |
2548 | if (status < 0) { | |
84fe6e79 | 2549 | dbg("Writing ZLP_REG%d failed status-0x%x", |
3f542974 PS |
2550 | i + 1, status); |
2551 | break; | |
2552 | } else | |
84fe6e79 | 2553 | dbg("ZLP_REG%d Writing success status%d", |
3f542974 PS |
2554 | i + 1, status); |
2555 | ||
2556 | } | |
0de9a702 | 2557 | mos7840_port->control_urb = usb_alloc_urb(0, GFP_KERNEL); |
3f542974 | 2558 | mos7840_port->ctrl_buf = kmalloc(16, GFP_KERNEL); |
880af9db AC |
2559 | mos7840_port->dr = kmalloc(sizeof(struct usb_ctrlrequest), |
2560 | GFP_KERNEL); | |
2561 | if (!mos7840_port->control_urb || !mos7840_port->ctrl_buf || | |
2562 | !mos7840_port->dr) { | |
0de9a702 ON |
2563 | status = -ENOMEM; |
2564 | goto error; | |
2565 | } | |
3f542974 | 2566 | } |
84fe6e79 | 2567 | dbg ("mos7840_startup: all ports configured..........."); |
3f542974 | 2568 | |
880af9db | 2569 | /* Zero Length flag enable */ |
3f542974 | 2570 | Data = 0x0f; |
3f542974 PS |
2571 | status = mos7840_set_reg_sync(serial->port[0], ZLP_REG5, Data); |
2572 | if (status < 0) { | |
84fe6e79 | 2573 | dbg("Writing ZLP_REG5 failed status-0x%x", status); |
7ced46c3 | 2574 | goto error; |
3f542974 | 2575 | } else |
84fe6e79 | 2576 | dbg("ZLP_REG5 Writing success status%d", status); |
3f542974 PS |
2577 | |
2578 | /* setting configuration feature to one */ | |
2579 | usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), | |
97c4965d | 2580 | (__u8) 0x03, 0x00, 0x01, 0x00, NULL, 0x00, 5 * HZ); |
3f542974 | 2581 | return 0; |
0de9a702 ON |
2582 | error: |
2583 | for (/* nothing */; i >= 0; i--) { | |
2584 | mos7840_port = mos7840_get_port_private(serial->port[i]); | |
2585 | ||
2586 | kfree(mos7840_port->dr); | |
2587 | kfree(mos7840_port->ctrl_buf); | |
2588 | usb_free_urb(mos7840_port->control_urb); | |
2589 | kfree(mos7840_port); | |
2590 | serial->port[i] = NULL; | |
2591 | } | |
2592 | return status; | |
3f542974 PS |
2593 | } |
2594 | ||
2595 | /**************************************************************************** | |
f9c99bb8 | 2596 | * mos7840_disconnect |
3f542974 PS |
2597 | * This function is called whenever the device is removed from the usb bus. |
2598 | ****************************************************************************/ | |
2599 | ||
f9c99bb8 | 2600 | static void mos7840_disconnect(struct usb_serial *serial) |
3f542974 PS |
2601 | { |
2602 | int i; | |
0de9a702 | 2603 | unsigned long flags; |
3f542974 | 2604 | struct moschip_port *mos7840_port; |
f9c99bb8 | 2605 | dbg("%s", " disconnect :entering.........."); |
3f542974 PS |
2606 | |
2607 | if (!serial) { | |
84fe6e79 | 2608 | dbg("%s", "Invalid Handler"); |
3f542974 PS |
2609 | return; |
2610 | } | |
2611 | ||
880af9db | 2612 | /* check for the ports to be closed,close the ports and disconnect */ |
3f542974 PS |
2613 | |
2614 | /* free private structure allocated for serial port * | |
2615 | * stop reads and writes on all ports */ | |
2616 | ||
2617 | for (i = 0; i < serial->num_ports; ++i) { | |
2618 | mos7840_port = mos7840_get_port_private(serial->port[i]); | |
37768adf TC |
2619 | dbg ("mos7840_port %d = %p", i, mos7840_port); |
2620 | if (mos7840_port) { | |
2621 | spin_lock_irqsave(&mos7840_port->pool_lock, flags); | |
2622 | mos7840_port->zombie = 1; | |
2623 | spin_unlock_irqrestore(&mos7840_port->pool_lock, flags); | |
2624 | usb_kill_urb(mos7840_port->control_urb); | |
f9c99bb8 AS |
2625 | } |
2626 | } | |
2627 | ||
2628 | dbg("%s", "Thank u :: "); | |
2629 | ||
2630 | } | |
2631 | ||
2632 | /**************************************************************************** | |
2633 | * mos7840_release | |
2634 | * This function is called when the usb_serial structure is freed. | |
2635 | ****************************************************************************/ | |
2636 | ||
2637 | static void mos7840_release(struct usb_serial *serial) | |
2638 | { | |
2639 | int i; | |
2640 | struct moschip_port *mos7840_port; | |
2641 | dbg("%s", " release :entering.........."); | |
2642 | ||
2643 | if (!serial) { | |
2644 | dbg("%s", "Invalid Handler"); | |
2645 | return; | |
2646 | } | |
2647 | ||
2648 | /* check for the ports to be closed,close the ports and disconnect */ | |
2649 | ||
2650 | /* free private structure allocated for serial port * | |
2651 | * stop reads and writes on all ports */ | |
2652 | ||
2653 | for (i = 0; i < serial->num_ports; ++i) { | |
2654 | mos7840_port = mos7840_get_port_private(serial->port[i]); | |
2655 | dbg("mos7840_port %d = %p", i, mos7840_port); | |
2656 | if (mos7840_port) { | |
37768adf TC |
2657 | kfree(mos7840_port->ctrl_buf); |
2658 | kfree(mos7840_port->dr); | |
2659 | kfree(mos7840_port); | |
2660 | } | |
3f542974 PS |
2661 | } |
2662 | ||
84fe6e79 | 2663 | dbg("%s", "Thank u :: "); |
3f542974 PS |
2664 | |
2665 | } | |
2666 | ||
d9b1b787 JH |
2667 | static struct usb_driver io_driver = { |
2668 | .name = "mos7840", | |
2669 | .probe = usb_serial_probe, | |
2670 | .disconnect = usb_serial_disconnect, | |
2671 | .id_table = moschip_id_table_combined, | |
d9b1b787 JH |
2672 | }; |
2673 | ||
3f542974 PS |
2674 | static struct usb_serial_driver moschip7840_4port_device = { |
2675 | .driver = { | |
2676 | .owner = THIS_MODULE, | |
2677 | .name = "mos7840", | |
2678 | }, | |
2679 | .description = DRIVER_DESC, | |
2680 | .id_table = moschip_port_id_table, | |
3f542974 | 2681 | .num_ports = 4, |
3f542974 PS |
2682 | .open = mos7840_open, |
2683 | .close = mos7840_close, | |
2684 | .write = mos7840_write, | |
2685 | .write_room = mos7840_write_room, | |
2686 | .chars_in_buffer = mos7840_chars_in_buffer, | |
2687 | .throttle = mos7840_throttle, | |
2688 | .unthrottle = mos7840_unthrottle, | |
2689 | .calc_num_ports = mos7840_calc_num_ports, | |
2690 | #ifdef MCSSerialProbe | |
2691 | .probe = mos7840_serial_probe, | |
2692 | #endif | |
2693 | .ioctl = mos7840_ioctl, | |
2694 | .set_termios = mos7840_set_termios, | |
2695 | .break_ctl = mos7840_break, | |
2696 | .tiocmget = mos7840_tiocmget, | |
2697 | .tiocmset = mos7840_tiocmset, | |
0bca1b91 | 2698 | .get_icount = mos7840_get_icount, |
3f542974 | 2699 | .attach = mos7840_startup, |
f9c99bb8 AS |
2700 | .disconnect = mos7840_disconnect, |
2701 | .release = mos7840_release, | |
3f542974 PS |
2702 | .read_bulk_callback = mos7840_bulk_in_callback, |
2703 | .read_int_callback = mos7840_interrupt_callback, | |
2704 | }; | |
2705 | ||
4d2a7aff AS |
2706 | static struct usb_serial_driver * const serial_drivers[] = { |
2707 | &moschip7840_4port_device, NULL | |
2708 | }; | |
2709 | ||
e7414d9a | 2710 | module_usb_serial_driver(io_driver, serial_drivers); |
3f542974 | 2711 | |
3f542974 PS |
2712 | MODULE_DESCRIPTION(DRIVER_DESC); |
2713 | MODULE_LICENSE("GPL"); | |
2714 | ||
2715 | module_param(debug, bool, S_IRUGO | S_IWUSR); | |
2716 | MODULE_PARM_DESC(debug, "Debug enabled or not"); |