0d412ede839a005fc8125c8c088a2d7cc7932544
[linux-2.6.git] / drivers / usb / serial / io_ti.c
1 /*
2  * Edgeport USB Serial Converter driver
3  *
4  * Copyright (C) 2000-2002 Inside Out Networks, All rights reserved.
5  * Copyright (C) 2001-2002 Greg Kroah-Hartman <greg@kroah.com>
6  *
7  *      This program is free software; you can redistribute it and/or modify
8  *      it under the terms of the GNU General Public License as published by
9  *      the Free Software Foundation; either version 2 of the License, or
10  *      (at your option) any later version.
11  *
12  * Supports the following devices:
13  *      EP/1 EP/2 EP/4 EP/21 EP/22 EP/221 EP/42 EP/421 WATCHPORT
14  *
15  * For questions or problems with this driver, contact Inside Out
16  * Networks technical support, or Peter Berger <pberger@brimson.com>,
17  * or Al Borchers <alborchers@steinerpoint.com>.
18  *
19  * Version history:
20  *
21  *      July 11, 2002   Removed 4 port device structure since all TI UMP 
22  *                      chips have only 2 ports 
23  *                      David Iacovelli (davidi@ionetworks.com)
24  *
25  */
26
27 #include <linux/kernel.h>
28 #include <linux/jiffies.h>
29 #include <linux/errno.h>
30 #include <linux/init.h>
31 #include <linux/slab.h>
32 #include <linux/tty.h>
33 #include <linux/tty_driver.h>
34 #include <linux/tty_flip.h>
35 #include <linux/module.h>
36 #include <linux/spinlock.h>
37 #include <linux/mutex.h>
38 #include <linux/serial.h>
39 #include <linux/ioctl.h>
40 #include <asm/uaccess.h>
41 #include <linux/usb.h>
42 #include <linux/usb/serial.h>
43
44 #include "io_16654.h"
45 #include "io_usbvend.h"
46 #include "io_ti.h"
47
48 /*
49  * Version Information
50  */
51 #define DRIVER_VERSION "v0.7mode043006"
52 #define DRIVER_AUTHOR "Greg Kroah-Hartman <greg@kroah.com> and David Iacovelli"
53 #define DRIVER_DESC "Edgeport USB Serial Driver"
54
55
56 /* firmware image code */
57 #define IMAGE_VERSION_NAME      PagableOperationalCodeImageVersion
58 #define IMAGE_ARRAY_NAME        PagableOperationalCodeImage
59 #define IMAGE_SIZE              PagableOperationalCodeSize
60 #include "io_fw_down3.h"        /* Define array OperationalCodeImage[] */
61
62 #define EPROM_PAGE_SIZE         64
63
64
65 struct edgeport_uart_buf_desc {
66         __u32 count;            // Number of bytes currently in buffer
67 };
68
69 /* different hardware types */
70 #define HARDWARE_TYPE_930       0
71 #define HARDWARE_TYPE_TIUMP     1
72
73 // IOCTL_PRIVATE_TI_GET_MODE Definitions
74 #define TI_MODE_CONFIGURING     0   // Device has not entered start device 
75 #define TI_MODE_BOOT            1   // Staying in boot mode
76 #define TI_MODE_DOWNLOAD        2   // Made it to download mode
77 #define TI_MODE_TRANSITIONING   3   // Currently in boot mode but transitioning to download mode
78
79 /* read urb state */
80 #define EDGE_READ_URB_RUNNING   0
81 #define EDGE_READ_URB_STOPPING  1
82 #define EDGE_READ_URB_STOPPED   2
83
84 #define EDGE_LOW_LATENCY        1
85 #define EDGE_CLOSING_WAIT       4000    /* in .01 sec */
86
87 #define EDGE_OUT_BUF_SIZE       1024
88
89
90 /* Product information read from the Edgeport */
91 struct product_info
92 {
93         int     TiMode;                 // Current TI Mode
94         __u8    hardware_type;          // Type of hardware
95 } __attribute__((packed));
96
97 /* circular buffer */
98 struct edge_buf {
99         unsigned int    buf_size;
100         char            *buf_buf;
101         char            *buf_get;
102         char            *buf_put;
103 };
104
105 struct edgeport_port {
106         __u16 uart_base;
107         __u16 dma_address;
108         __u8 shadow_msr;
109         __u8 shadow_mcr;
110         __u8 shadow_lsr;
111         __u8 lsr_mask;
112         __u32 ump_read_timeout;         /* Number of miliseconds the UMP will
113                                            wait without data before completing
114                                            a read short */
115         int baud_rate;
116         int close_pending;
117         int lsr_event;
118         struct edgeport_uart_buf_desc tx;
119         struct async_icount     icount;
120         wait_queue_head_t       delta_msr_wait; /* for handling sleeping while
121                                                    waiting for msr change to
122                                                    happen */
123         struct edgeport_serial  *edge_serial;
124         struct usb_serial_port  *port;
125         __u8 bUartMode;         /* Port type, 0: RS232, etc. */ 
126         spinlock_t ep_lock;
127         int ep_read_urb_state;
128         int ep_write_urb_in_use;
129         struct edge_buf *ep_out_buf;
130 };
131
132 struct edgeport_serial {
133         struct product_info product_info;
134         u8 TI_I2C_Type;                 // Type of I2C in UMP
135         u8 TiReadI2C;                   // Set to TRUE if we have read the I2c in Boot Mode
136         struct mutex es_lock;
137         int num_ports_open;
138         struct usb_serial *serial;
139 };
140
141
142 /* Devices that this driver supports */
143 static struct usb_device_id edgeport_1port_id_table [] = {
144         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_1) },
145         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1) },
146         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1I) },
147         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROXIMITY) },
148         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOTION) },
149         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOISTURE) },
150         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_TEMPERATURE) },
151         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_HUMIDITY) },
152         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_POWER) },
153         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_LIGHT) },
154         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_RADIATION) },
155         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_DISTANCE) },
156         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_ACCELERATION) },
157         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROX_DIST) },
158         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_HP4CD) },
159         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_PCI) },
160         { }
161 };
162
163 static struct usb_device_id edgeport_2port_id_table [] = {
164         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2) },
165         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2C) },
166         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2I) },
167         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_421) },
168         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21) },
169         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_42) },
170         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4) },
171         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4I) },
172         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22I) },
173         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_221C) },
174         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22C) },
175         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21C) },
176         /* The 4, 8 and 16 port devices show up as multiple 2 port devices */
177         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4S) },
178         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_8) },
179         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_8S) },
180         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_416) },
181         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_416B) },
182         { }
183 };
184
185 /* Devices that this driver supports */
186 static struct usb_device_id id_table_combined [] = {
187         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_1) },
188         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1) },
189         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_TI3410_EDGEPORT_1I) },
190         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROXIMITY) },
191         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOTION) },
192         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_MOISTURE) },
193         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_TEMPERATURE) },
194         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_HUMIDITY) },
195         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_POWER) },
196         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_LIGHT) },
197         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_RADIATION) },
198         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_DISTANCE) },
199         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_ACCELERATION) },
200         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_WP_PROX_DIST) },
201         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_HP4CD) },
202         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_PLUS_PWR_PCI) },
203         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2) },
204         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2C) },
205         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_2I) },
206         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_421) },
207         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21) },
208         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_42) },
209         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4) },
210         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4I) },
211         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22I) },
212         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_221C) },
213         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_22C) },
214         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_21C) },
215         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_4S) },
216         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_8) },
217         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_8S) },
218         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_416) },
219         { USB_DEVICE(USB_VENDOR_ID_ION, ION_DEVICE_ID_TI_EDGEPORT_416B) },
220         { }
221 };
222
223 MODULE_DEVICE_TABLE (usb, id_table_combined);
224
225 static struct usb_driver io_driver = {
226         .name =         "io_ti",
227         .probe =        usb_serial_probe,
228         .disconnect =   usb_serial_disconnect,
229         .id_table =     id_table_combined,
230         .no_dynamic_id =        1,
231 };
232
233
234 static struct EDGE_FIRMWARE_VERSION_INFO OperationalCodeImageVersion;
235
236 static int debug;
237
238 static int TIStayInBootMode = 0;
239 static int low_latency = EDGE_LOW_LATENCY;
240 static int closing_wait = EDGE_CLOSING_WAIT;
241 static int ignore_cpu_rev = 0;
242 static int default_uart_mode = 0;       /* RS232 */
243
244
245 static void edge_tty_recv(struct device *dev, struct tty_struct *tty, unsigned char *data, int length);
246
247 static void stop_read(struct edgeport_port *edge_port);
248 static int restart_read(struct edgeport_port *edge_port);
249
250 static void edge_set_termios (struct usb_serial_port *port, struct ktermios *old_termios);
251 static void edge_send(struct usb_serial_port *port);
252
253 /* sysfs attributes */
254 static int edge_create_sysfs_attrs(struct usb_serial_port *port);
255 static int edge_remove_sysfs_attrs(struct usb_serial_port *port);
256
257 /* circular buffer */
258 static struct edge_buf *edge_buf_alloc(unsigned int size);
259 static void edge_buf_free(struct edge_buf *eb);
260 static void edge_buf_clear(struct edge_buf *eb);
261 static unsigned int edge_buf_data_avail(struct edge_buf *eb);
262 static unsigned int edge_buf_space_avail(struct edge_buf *eb);
263 static unsigned int edge_buf_put(struct edge_buf *eb, const char *buf,
264         unsigned int count);
265 static unsigned int edge_buf_get(struct edge_buf *eb, char *buf,
266         unsigned int count);
267
268
269 static int TIReadVendorRequestSync (struct usb_device *dev,
270                                 __u8            request,
271                                 __u16           value,
272                                 __u16           index,
273                                 u8              *data,
274                                 int             size)
275 {
276         int status;
277
278         status = usb_control_msg (dev,
279                                 usb_rcvctrlpipe(dev, 0),
280                                 request,
281                                 (USB_TYPE_VENDOR | 
282                                  USB_RECIP_DEVICE | 
283                                  USB_DIR_IN),
284                                 value,
285                                 index,
286                                 data,
287                                 size,
288                                 1000);
289         if (status < 0)
290                 return status;
291         if (status != size) {
292                 dbg ("%s - wanted to write %d, but only wrote %d",
293                      __func__, size, status);
294                 return -ECOMM;
295         }
296         return 0;
297 }
298
299 static int TISendVendorRequestSync (struct usb_device *dev,
300                                 __u8            request,
301                                 __u16           value,
302                                 __u16           index,
303                                 u8              *data,
304                                 int             size)
305 {
306         int status;
307
308         status = usb_control_msg (dev,
309                                 usb_sndctrlpipe(dev, 0),
310                                 request,
311                                 (USB_TYPE_VENDOR | 
312                                  USB_RECIP_DEVICE | 
313                                  USB_DIR_OUT),
314                                 value,
315                                 index,
316                                 data,
317                                 size,
318                                 1000);
319         if (status < 0)
320                 return status;
321         if (status != size) {
322                 dbg ("%s - wanted to write %d, but only wrote %d",
323                      __func__, size, status);
324                 return -ECOMM;
325         }
326         return 0;
327 }
328
329 static int TIWriteCommandSync (struct usb_device *dev, __u8 command,
330                                 __u8 moduleid, __u16 value, u8 *data,
331                                 int size)
332 {
333         return TISendVendorRequestSync (dev,
334                                           command,                      // Request
335                                           value,                        // wValue 
336                                           moduleid,                     // wIndex
337                                           data,                         // TransferBuffer
338                                           size);                        // TransferBufferLength
339
340 }
341
342 /* clear tx/rx buffers and fifo in TI UMP */
343 static int TIPurgeDataSync (struct usb_serial_port *port, __u16 mask)
344 {
345         int port_number = port->number - port->serial->minor;
346
347         dbg ("%s - port %d, mask %x", __func__, port_number, mask);
348
349         return TIWriteCommandSync (port->serial->dev,
350                                         UMPC_PURGE_PORT,
351                                         (__u8)(UMPM_UART1_PORT + port_number),
352                                         mask,
353                                         NULL,
354                                         0);
355 }
356
357 /**
358  * TIReadDownloadMemory - Read edgeport memory from TI chip
359  * @dev: usb device pointer
360  * @start_address: Device CPU address at which to read
361  * @length: Length of above data
362  * @address_type: Can read both XDATA and I2C
363  * @buffer: pointer to input data buffer
364  */
365 static int TIReadDownloadMemory(struct usb_device *dev, int start_address,
366                                 int length, __u8 address_type, __u8 *buffer)
367 {
368         int status = 0;
369         __u8 read_length;
370         __be16 be_start_address;
371         
372         dbg ("%s - @ %x for %d", __func__, start_address, length);
373
374         /* Read in blocks of 64 bytes
375          * (TI firmware can't handle more than 64 byte reads)
376          */
377         while (length) {
378                 if (length > 64)
379                         read_length= 64;
380                 else
381                         read_length = (__u8)length;
382
383                 if (read_length > 1) {
384                         dbg ("%s - @ %x for %d", __func__,
385                              start_address, read_length);
386                 }
387                 be_start_address = cpu_to_be16 (start_address);
388                 status = TIReadVendorRequestSync (dev,
389                                                   UMPC_MEMORY_READ,     // Request
390                                                   (__u16)address_type,  // wValue (Address type)
391                                                   (__force __u16)be_start_address,      // wIndex (Address to read)
392                                                   buffer,               // TransferBuffer
393                                                   read_length); // TransferBufferLength
394
395                 if (status) {
396                         dbg ("%s - ERROR %x", __func__, status);
397                         return status;
398                 }
399
400                 if (read_length > 1) {
401                         usb_serial_debug_data(debug, &dev->dev, __func__,
402                                               read_length, buffer);
403                 }
404
405                 /* Update pointers/length */
406                 start_address += read_length;
407                 buffer += read_length;
408                 length -= read_length;
409         }
410         
411         return status;
412 }
413
414 static int TIReadRam (struct usb_device *dev, int start_address, int length, __u8 *buffer)
415 {
416         return TIReadDownloadMemory (dev,
417                                      start_address,
418                                      length,
419                                      DTK_ADDR_SPACE_XDATA,
420                                      buffer);
421 }
422
423 /* Read edgeport memory to a given block */
424 static int TIReadBootMemory (struct edgeport_serial *serial, int start_address, int length, __u8 * buffer)
425 {
426         int status = 0;
427         int i;
428
429         for (i=0; i< length; i++) {
430                 status = TIReadVendorRequestSync (serial->serial->dev,
431                                         UMPC_MEMORY_READ,               // Request
432                                         serial->TI_I2C_Type,            // wValue (Address type)
433                                         (__u16)(start_address+i),       // wIndex
434                                         &buffer[i],                     // TransferBuffer
435                                         0x01);                          // TransferBufferLength
436                 if (status) {
437                         dbg ("%s - ERROR %x", __func__, status);
438                         return status;
439                 }
440         }
441
442         dbg ("%s - start_address = %x, length = %d", __func__, start_address, length);
443         usb_serial_debug_data(debug, &serial->serial->dev->dev, __func__, length, buffer);
444
445         serial->TiReadI2C = 1;
446
447         return status;
448 }
449
450 /* Write given block to TI EPROM memory */
451 static int TIWriteBootMemory (struct edgeport_serial *serial, int start_address, int length, __u8 *buffer)
452 {
453         int status = 0;
454         int i;
455         __u8 temp;
456
457         /* Must do a read before write */
458         if (!serial->TiReadI2C) {
459                 status = TIReadBootMemory(serial, 0, 1, &temp);
460                 if (status)
461                         return status;
462         }
463
464         for (i=0; i < length; ++i) {
465                 status = TISendVendorRequestSync (serial->serial->dev,
466                                                 UMPC_MEMORY_WRITE,              // Request
467                                                 buffer[i],                      // wValue
468                                                 (__u16)(i+start_address),       // wIndex
469                                                 NULL,                           // TransferBuffer
470                                                 0);                             // TransferBufferLength
471                 if (status)
472                         return status;
473         }
474
475         dbg ("%s - start_sddr = %x, length = %d", __func__, start_address, length);
476         usb_serial_debug_data(debug, &serial->serial->dev->dev, __func__, length, buffer);
477
478         return status;
479 }
480
481
482 /* Write edgeport I2C memory to TI chip */
483 static int TIWriteDownloadI2C (struct edgeport_serial *serial, int start_address, int length, __u8 address_type, __u8 *buffer)
484 {
485         int status = 0;
486         int write_length;
487         __be16 be_start_address;
488
489         /* We can only send a maximum of 1 aligned byte page at a time */
490         
491         /* calulate the number of bytes left in the first page */
492         write_length = EPROM_PAGE_SIZE - (start_address & (EPROM_PAGE_SIZE - 1));
493
494         if (write_length > length)
495                 write_length = length;
496
497         dbg ("%s - BytesInFirstPage Addr = %x, length = %d", __func__, start_address, write_length);
498         usb_serial_debug_data(debug, &serial->serial->dev->dev, __func__, write_length, buffer);
499
500         /* Write first page */
501         be_start_address = cpu_to_be16 (start_address);
502         status = TISendVendorRequestSync (serial->serial->dev,
503                                         UMPC_MEMORY_WRITE,      // Request
504                                         (__u16)address_type,    // wValue
505                                         (__force __u16)be_start_address,        // wIndex
506                                         buffer,                 // TransferBuffer
507                                         write_length);
508         if (status) {
509                 dbg ("%s - ERROR %d", __func__, status);
510                 return status;
511         }
512
513         length          -= write_length;
514         start_address   += write_length;
515         buffer          += write_length;
516
517         /* We should be aligned now -- can write max page size bytes at a time */
518         while (length) {
519                 if (length > EPROM_PAGE_SIZE)
520                         write_length = EPROM_PAGE_SIZE;
521                 else
522                         write_length = length;
523
524                 dbg ("%s - Page Write Addr = %x, length = %d", __func__, start_address, write_length);
525                 usb_serial_debug_data(debug, &serial->serial->dev->dev, __func__, write_length, buffer);
526
527                 /* Write next page */
528                 be_start_address = cpu_to_be16 (start_address);
529                 status = TISendVendorRequestSync (serial->serial->dev,
530                                                 UMPC_MEMORY_WRITE,      // Request
531                                                 (__u16)address_type,    // wValue
532                                                 (__force __u16)be_start_address,        // wIndex
533                                                 buffer,                 // TransferBuffer
534                                                 write_length);          // TransferBufferLength
535                 if (status) {
536                         dev_err (&serial->serial->dev->dev, "%s - ERROR %d\n", __func__, status);
537                         return status;
538                 }
539                 
540                 length          -= write_length;
541                 start_address   += write_length;
542                 buffer          += write_length;
543         }
544         return status;
545 }
546
547 /* Examine the UMP DMA registers and LSR
548  * 
549  * Check the MSBit of the X and Y DMA byte count registers.
550  * A zero in this bit indicates that the TX DMA buffers are empty
551  * then check the TX Empty bit in the UART.
552  */
553 static int TIIsTxActive (struct edgeport_port *port)
554 {
555         int status;
556         struct out_endpoint_desc_block *oedb;
557         __u8 *lsr;
558         int bytes_left = 0;
559
560         oedb = kmalloc (sizeof (* oedb), GFP_KERNEL);
561         if (!oedb) {
562                 dev_err (&port->port->dev, "%s - out of memory\n", __func__);
563                 return -ENOMEM;
564         }
565
566         lsr = kmalloc (1, GFP_KERNEL);  /* Sigh, that's right, just one byte,
567                                            as not all platforms can do DMA
568                                            from stack */
569         if (!lsr) {
570                 kfree(oedb);
571                 return -ENOMEM;
572         }
573         /* Read the DMA Count Registers */
574         status = TIReadRam (port->port->serial->dev,
575                             port->dma_address,
576                             sizeof( *oedb),
577                             (void *)oedb);
578
579         if (status)
580                 goto exit_is_tx_active;
581
582         dbg ("%s - XByteCount    0x%X", __func__, oedb->XByteCount);
583
584         /* and the LSR */
585         status = TIReadRam (port->port->serial->dev, 
586                             port->uart_base + UMPMEM_OFFS_UART_LSR,
587                             1,
588                             lsr);
589
590         if (status)
591                 goto exit_is_tx_active;
592         dbg ("%s - LSR = 0x%X", __func__, *lsr);
593         
594         /* If either buffer has data or we are transmitting then return TRUE */
595         if ((oedb->XByteCount & 0x80 ) != 0 )
596                 bytes_left += 64;
597
598         if ((*lsr & UMP_UART_LSR_TX_MASK ) == 0 )
599                 bytes_left += 1;
600
601         /* We return Not Active if we get any kind of error */
602 exit_is_tx_active:
603         dbg ("%s - return %d", __func__, bytes_left );
604
605         kfree(lsr);
606         kfree(oedb);
607         return bytes_left;
608 }
609
610 static void TIChasePort(struct edgeport_port *port, unsigned long timeout, int flush)
611 {
612         int baud_rate;
613         struct tty_struct *tty = port->port->tty;
614         wait_queue_t wait;
615         unsigned long flags;
616
617         if (!timeout)
618                 timeout = (HZ*EDGE_CLOSING_WAIT)/100;
619
620         /* wait for data to drain from the buffer */
621         spin_lock_irqsave(&port->ep_lock, flags);
622         init_waitqueue_entry(&wait, current);
623         add_wait_queue(&tty->write_wait, &wait);
624         for (;;) {
625                 set_current_state(TASK_INTERRUPTIBLE);
626                 if (edge_buf_data_avail(port->ep_out_buf) == 0
627                 || timeout == 0 || signal_pending(current)
628                 || !usb_get_intfdata(port->port->serial->interface))  /* disconnect */
629                         break;
630                 spin_unlock_irqrestore(&port->ep_lock, flags);
631                 timeout = schedule_timeout(timeout);
632                 spin_lock_irqsave(&port->ep_lock, flags);
633         }
634         set_current_state(TASK_RUNNING);
635         remove_wait_queue(&tty->write_wait, &wait);
636         if (flush)
637                 edge_buf_clear(port->ep_out_buf);
638         spin_unlock_irqrestore(&port->ep_lock, flags);
639
640         /* wait for data to drain from the device */
641         timeout += jiffies;
642         while ((long)(jiffies - timeout) < 0 && !signal_pending(current)
643         && usb_get_intfdata(port->port->serial->interface)) {  /* not disconnected */
644                 if (!TIIsTxActive(port))
645                         break;
646                 msleep(10);
647         }
648
649         /* disconnected */
650         if (!usb_get_intfdata(port->port->serial->interface))
651                 return;
652
653         /* wait one more character time, based on baud rate */
654         /* (TIIsTxActive doesn't seem to wait for the last byte) */
655         if ((baud_rate=port->baud_rate) == 0)
656                 baud_rate = 50;
657         msleep(max(1, DIV_ROUND_UP(10000, baud_rate)));
658 }
659
660 static int TIChooseConfiguration (struct usb_device *dev)
661 {
662         // There may be multiple configurations on this device, in which case
663         // we would need to read and parse all of them to find out which one
664         // we want. However, we just support one config at this point,
665         // configuration # 1, which is Config Descriptor 0.
666
667         dbg ("%s - Number of Interfaces = %d", __func__, dev->config->desc.bNumInterfaces);
668         dbg ("%s - MAX Power            = %d", __func__, dev->config->desc.bMaxPower*2);
669
670         if (dev->config->desc.bNumInterfaces != 1) {
671                 dev_err (&dev->dev, "%s - bNumInterfaces is not 1, ERROR!\n", __func__);
672                 return -ENODEV;
673         }
674
675         return 0;
676 }
677
678 static int TIReadRom (struct edgeport_serial *serial, int start_address, int length, __u8 *buffer)
679 {
680         int status;
681
682         if (serial->product_info.TiMode == TI_MODE_DOWNLOAD) {
683                 status = TIReadDownloadMemory (serial->serial->dev,
684                                                start_address,
685                                                length,
686                                                serial->TI_I2C_Type,
687                                                buffer);
688         } else {
689                 status = TIReadBootMemory (serial,
690                                            start_address,
691                                            length,
692                                            buffer);
693         }
694
695         return status;
696 }
697
698 static int TIWriteRom (struct edgeport_serial *serial, int start_address, int length, __u8 *buffer)
699 {
700         if (serial->product_info.TiMode == TI_MODE_BOOT)
701                 return TIWriteBootMemory (serial,
702                                           start_address,
703                                           length,
704                                           buffer);
705
706         if (serial->product_info.TiMode == TI_MODE_DOWNLOAD)
707                 return TIWriteDownloadI2C (serial,
708                                            start_address,
709                                            length,
710                                            serial->TI_I2C_Type,
711                                            buffer);
712
713         return -EINVAL;
714 }
715
716
717
718 /* Read a descriptor header from I2C based on type */
719 static int TIGetDescriptorAddress (struct edgeport_serial *serial, int desc_type, struct ti_i2c_desc *rom_desc)
720 {
721         int start_address;
722         int status;
723
724         /* Search for requested descriptor in I2C */
725         start_address = 2;
726         do {
727                 status = TIReadRom (serial,
728                                    start_address,
729                                    sizeof(struct ti_i2c_desc),
730                                    (__u8 *)rom_desc );
731                 if (status)
732                         return 0;
733
734                 if (rom_desc->Type == desc_type)
735                         return start_address;
736
737                 start_address = start_address + sizeof(struct ti_i2c_desc) +  rom_desc->Size;
738
739         } while ((start_address < TI_MAX_I2C_SIZE) && rom_desc->Type);
740         
741         return 0;
742 }
743
744 /* Validate descriptor checksum */
745 static int ValidChecksum(struct ti_i2c_desc *rom_desc, __u8 *buffer)
746 {
747         __u16 i;
748         __u8 cs = 0;
749
750         for (i=0; i < rom_desc->Size; i++) {
751                 cs = (__u8)(cs + buffer[i]);
752         }
753         if (cs != rom_desc->CheckSum) {
754                 dbg ("%s - Mismatch %x - %x", __func__, rom_desc->CheckSum, cs);
755                 return -EINVAL;
756         }
757         return 0;
758 }
759
760 /* Make sure that the I2C image is good */
761 static int TiValidateI2cImage (struct edgeport_serial *serial)
762 {
763         struct device *dev = &serial->serial->dev->dev;
764         int status = 0;
765         struct ti_i2c_desc *rom_desc;
766         int start_address = 2;
767         __u8 *buffer;
768         __u16 ttype;
769
770         rom_desc = kmalloc (sizeof (*rom_desc), GFP_KERNEL);
771         if (!rom_desc) {
772                 dev_err (dev, "%s - out of memory\n", __func__);
773                 return -ENOMEM;
774         }
775         buffer = kmalloc (TI_MAX_I2C_SIZE, GFP_KERNEL);
776         if (!buffer) {
777                 dev_err (dev, "%s - out of memory when allocating buffer\n", __func__);
778                 kfree (rom_desc);
779                 return -ENOMEM;
780         }
781
782         // Read the first byte (Signature0) must be 0x52 or 0x10
783         status = TIReadRom (serial, 0, 1, buffer);
784         if (status)
785                 goto ExitTiValidateI2cImage; 
786
787         if (*buffer != UMP5152 && *buffer != UMP3410) {
788                 dev_err (dev, "%s - invalid buffer signature\n", __func__);
789                 status = -ENODEV;
790                 goto ExitTiValidateI2cImage;
791         }
792
793         do {
794                 // Validate the I2C
795                 status = TIReadRom (serial,
796                                 start_address,
797                                 sizeof(struct ti_i2c_desc),
798                                 (__u8 *)rom_desc);
799                 if (status)
800                         break;
801
802                 if ((start_address + sizeof(struct ti_i2c_desc) + rom_desc->Size) > TI_MAX_I2C_SIZE) {
803                         status = -ENODEV;
804                         dbg ("%s - structure too big, erroring out.", __func__);
805                         break;
806                 }
807
808                 dbg ("%s Type = 0x%x", __func__, rom_desc->Type);
809
810                 // Skip type 2 record
811                 ttype = rom_desc->Type & 0x0f;
812                 if ( ttype != I2C_DESC_TYPE_FIRMWARE_BASIC
813                         && ttype != I2C_DESC_TYPE_FIRMWARE_AUTO ) {
814                         // Read the descriptor data
815                         status = TIReadRom(serial,
816                                                 start_address+sizeof(struct ti_i2c_desc),
817                                                 rom_desc->Size,
818                                                 buffer);
819                         if (status)
820                                 break;
821
822                         status = ValidChecksum(rom_desc, buffer);
823                         if (status)
824                                 break;
825                 }
826                 start_address = start_address + sizeof(struct ti_i2c_desc) + rom_desc->Size;
827
828         } while ((rom_desc->Type != I2C_DESC_TYPE_ION) && (start_address < TI_MAX_I2C_SIZE));
829
830         if ((rom_desc->Type != I2C_DESC_TYPE_ION) || (start_address > TI_MAX_I2C_SIZE))
831                 status = -ENODEV;
832
833 ExitTiValidateI2cImage: 
834         kfree (buffer);
835         kfree (rom_desc);
836         return status;
837 }
838
839 static int TIReadManufDescriptor (struct edgeport_serial *serial, __u8 *buffer)
840 {
841         int status;
842         int start_address;
843         struct ti_i2c_desc *rom_desc;
844         struct edge_ti_manuf_descriptor *desc;
845
846         rom_desc = kmalloc (sizeof (*rom_desc), GFP_KERNEL);
847         if (!rom_desc) {
848                 dev_err (&serial->serial->dev->dev, "%s - out of memory\n", __func__);
849                 return -ENOMEM;
850         }
851         start_address = TIGetDescriptorAddress (serial, I2C_DESC_TYPE_ION, rom_desc);
852
853         if (!start_address) {
854                 dbg ("%s - Edge Descriptor not found in I2C", __func__);
855                 status = -ENODEV;
856                 goto exit;
857         }
858
859         // Read the descriptor data
860         status = TIReadRom (serial,
861                                 start_address+sizeof(struct ti_i2c_desc),
862                                 rom_desc->Size,
863                                 buffer);
864         if (status)
865                 goto exit;
866         
867         status = ValidChecksum(rom_desc, buffer);
868         
869         desc = (struct edge_ti_manuf_descriptor *)buffer;
870         dbg ( "%s - IonConfig      0x%x", __func__, desc->IonConfig     );
871         dbg ( "%s - Version          %d", __func__, desc->Version               );
872         dbg ( "%s - Cpu/Board      0x%x", __func__, desc->CpuRev_BoardRev       );
873         dbg ( "%s - NumPorts         %d", __func__, desc->NumPorts      );
874         dbg ( "%s - NumVirtualPorts  %d", __func__, desc->NumVirtualPorts       );
875         dbg ( "%s - TotalPorts       %d", __func__, desc->TotalPorts    );
876
877 exit:
878         kfree (rom_desc);
879         return status;
880 }
881
882 /* Build firmware header used for firmware update */
883 static int BuildI2CFirmwareHeader (__u8 *header, struct device *dev)
884 {
885         __u8 *buffer;
886         int buffer_size;
887         int i;
888         __u8 cs = 0;
889         struct ti_i2c_desc *i2c_header;
890         struct ti_i2c_image_header *img_header;
891         struct ti_i2c_firmware_rec *firmware_rec;
892
893         // In order to update the I2C firmware we must change the type 2 record to type 0xF2.
894         // This will force the UMP to come up in Boot Mode.  Then while in boot mode, the driver 
895         // will download the latest firmware (padded to 15.5k) into the UMP ram. 
896         // And finally when the device comes back up in download mode the driver will cause 
897         // the new firmware to be copied from the UMP Ram to I2C and the firmware will update
898         // the record type from 0xf2 to 0x02.
899         
900         // Allocate a 15.5k buffer + 2 bytes for version number (Firmware Record)
901         buffer_size = (((1024 * 16) - 512 )+ sizeof(struct ti_i2c_firmware_rec));
902
903         buffer = kmalloc (buffer_size, GFP_KERNEL);
904         if (!buffer) {
905                 dev_err (dev, "%s - out of memory\n", __func__);
906                 return -ENOMEM;
907         }
908         
909         // Set entire image of 0xffs
910         memset (buffer, 0xff, buffer_size);
911
912         // Copy version number into firmware record
913         firmware_rec = (struct ti_i2c_firmware_rec *)buffer;
914
915         firmware_rec->Ver_Major = OperationalCodeImageVersion.MajorVersion;
916         firmware_rec->Ver_Minor = OperationalCodeImageVersion.MinorVersion;
917
918         // Pointer to fw_down memory image
919         img_header = (struct ti_i2c_image_header *)&PagableOperationalCodeImage[0];
920
921         memcpy (buffer + sizeof(struct ti_i2c_firmware_rec),
922                 &PagableOperationalCodeImage[sizeof(struct ti_i2c_image_header)],
923                 le16_to_cpu(img_header->Length));
924
925         for (i=0; i < buffer_size; i++) {
926                 cs = (__u8)(cs + buffer[i]);
927         }
928
929         kfree (buffer);
930
931         // Build new header
932         i2c_header =  (struct ti_i2c_desc *)header;
933         firmware_rec =  (struct ti_i2c_firmware_rec*)i2c_header->Data;
934         
935         i2c_header->Type        = I2C_DESC_TYPE_FIRMWARE_BLANK;
936         i2c_header->Size        = (__u16)buffer_size;
937         i2c_header->CheckSum    = cs;
938         firmware_rec->Ver_Major = OperationalCodeImageVersion.MajorVersion;
939         firmware_rec->Ver_Minor = OperationalCodeImageVersion.MinorVersion;
940
941         return 0;
942 }
943
944 /* Try to figure out what type of I2c we have */
945 static int TIGetI2cTypeInBootMode (struct edgeport_serial *serial)
946 {
947         int status;
948         __u8 data;
949                 
950         // Try to read type 2
951         status = TIReadVendorRequestSync (serial->serial->dev,
952                                         UMPC_MEMORY_READ,               // Request
953                                         DTK_ADDR_SPACE_I2C_TYPE_II,     // wValue (Address type)
954                                         0,                              // wIndex
955                                         &data,                          // TransferBuffer
956                                         0x01);                          // TransferBufferLength
957         if (status)
958                 dbg ("%s - read 2 status error = %d", __func__, status);
959         else
960                 dbg ("%s - read 2 data = 0x%x", __func__, data);
961         if ((!status) && (data == UMP5152 || data == UMP3410)) {
962                 dbg ("%s - ROM_TYPE_II", __func__);
963                 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II;
964                 return 0;
965         }
966
967         // Try to read type 3
968         status = TIReadVendorRequestSync (serial->serial->dev,
969                                         UMPC_MEMORY_READ,               // Request
970                                         DTK_ADDR_SPACE_I2C_TYPE_III,    // wValue (Address type)
971                                         0,                              // wIndex
972                                         &data,                          // TransferBuffer
973                                         0x01);                          // TransferBufferLength
974         if (status)
975                 dbg ("%s - read 3 status error = %d", __func__, status);
976         else
977                 dbg ("%s - read 2 data = 0x%x", __func__, data);
978         if ((!status) && (data == UMP5152 || data == UMP3410)) {
979                 dbg ("%s - ROM_TYPE_III", __func__);
980                 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_III;
981                 return 0;
982         }
983
984         dbg ("%s - Unknown", __func__);
985         serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II;
986         return -ENODEV;
987 }
988
989 static int TISendBulkTransferSync (struct usb_serial *serial, void *buffer, int length, int *num_sent)
990 {
991         int status;
992
993         status = usb_bulk_msg (serial->dev,
994                                 usb_sndbulkpipe(serial->dev,
995                                                 serial->port[0]->bulk_out_endpointAddress),
996                                 buffer,
997                                 length,
998                                 num_sent,
999                                 1000);
1000         return status;
1001 }
1002
1003 /* Download given firmware image to the device (IN BOOT MODE) */
1004 static int TIDownloadCodeImage (struct edgeport_serial *serial, __u8 *image, int image_length)
1005 {
1006         int status = 0;
1007         int pos;
1008         int transfer;
1009         int done;
1010
1011         // Transfer firmware image
1012         for (pos = 0; pos < image_length; ) {
1013                 // Read the next buffer from file
1014                 transfer = image_length - pos;
1015                 if (transfer > EDGE_FW_BULK_MAX_PACKET_SIZE)
1016                         transfer = EDGE_FW_BULK_MAX_PACKET_SIZE;
1017
1018                 // Transfer data
1019                 status = TISendBulkTransferSync (serial->serial, &image[pos], transfer, &done);
1020                 if (status)
1021                         break;
1022                 // Advance buffer pointer
1023                 pos += done;
1024         }
1025
1026         return status;
1027 }
1028
1029 // FIXME!!!
1030 static int TIConfigureBootDevice (struct usb_device *dev)
1031 {
1032         return 0;
1033 }
1034
1035 /**
1036  * DownloadTIFirmware - Download run-time operating firmware to the TI5052
1037  * 
1038  * This routine downloads the main operating code into the TI5052, using the
1039  * boot code already burned into E2PROM or ROM.
1040  */
1041 static int TIDownloadFirmware (struct edgeport_serial *serial)
1042 {
1043         struct device *dev = &serial->serial->dev->dev;
1044         int status = 0;
1045         int start_address;
1046         struct edge_ti_manuf_descriptor *ti_manuf_desc;
1047         struct usb_interface_descriptor *interface;
1048         int download_cur_ver;
1049         int download_new_ver;
1050
1051         /* This routine is entered by both the BOOT mode and the Download mode
1052          * We can determine which code is running by the reading the config
1053          * descriptor and if we have only one bulk pipe it is in boot mode
1054          */
1055         serial->product_info.hardware_type = HARDWARE_TYPE_TIUMP;
1056
1057         /* Default to type 2 i2c */
1058         serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II;
1059
1060         status = TIChooseConfiguration (serial->serial->dev);
1061         if (status)
1062                 return status;
1063
1064         interface = &serial->serial->interface->cur_altsetting->desc;
1065         if (!interface) {
1066                 dev_err (dev, "%s - no interface set, error!\n", __func__);
1067                 return -ENODEV;
1068         }
1069
1070         // Setup initial mode -- the default mode 0 is TI_MODE_CONFIGURING
1071         // if we have more than one endpoint we are definitely in download mode
1072         if (interface->bNumEndpoints > 1)
1073                 serial->product_info.TiMode = TI_MODE_DOWNLOAD;
1074         else
1075                 // Otherwise we will remain in configuring mode
1076                 serial->product_info.TiMode = TI_MODE_CONFIGURING;
1077
1078         // Save Download Version Number
1079         OperationalCodeImageVersion.MajorVersion = PagableOperationalCodeImageVersion.MajorVersion;
1080         OperationalCodeImageVersion.MinorVersion = PagableOperationalCodeImageVersion.MinorVersion;
1081         OperationalCodeImageVersion.BuildNumber  = PagableOperationalCodeImageVersion.BuildNumber;
1082
1083         /********************************************************************/
1084         /* Download Mode */
1085         /********************************************************************/
1086         if (serial->product_info.TiMode == TI_MODE_DOWNLOAD) {
1087                 struct ti_i2c_desc *rom_desc;
1088
1089                 dbg("%s - RUNNING IN DOWNLOAD MODE", __func__);
1090
1091                 status = TiValidateI2cImage (serial);
1092                 if (status) {
1093                         dbg("%s - DOWNLOAD MODE -- BAD I2C", __func__);
1094                         return status;
1095                 }
1096                 
1097                 /* Validate Hardware version number
1098                  * Read Manufacturing Descriptor from TI Based Edgeport
1099                  */
1100                 ti_manuf_desc = kmalloc (sizeof (*ti_manuf_desc), GFP_KERNEL);
1101                 if (!ti_manuf_desc) {
1102                         dev_err (dev, "%s - out of memory.\n", __func__);
1103                         return -ENOMEM;
1104                 }
1105                 status = TIReadManufDescriptor (serial, (__u8 *)ti_manuf_desc);
1106                 if (status) {
1107                         kfree (ti_manuf_desc);
1108                         return status;
1109                 }
1110
1111                 // Check version number of ION descriptor
1112                 if (!ignore_cpu_rev && TI_GET_CPU_REVISION(ti_manuf_desc->CpuRev_BoardRev) < 2) {
1113                         dbg ( "%s - Wrong CPU Rev %d (Must be 2)", __func__,
1114                              TI_GET_CPU_REVISION(ti_manuf_desc->CpuRev_BoardRev));
1115                         kfree (ti_manuf_desc);
1116                         return -EINVAL;
1117                 }
1118
1119                 rom_desc = kmalloc (sizeof (*rom_desc), GFP_KERNEL);
1120                 if (!rom_desc) {
1121                         dev_err (dev, "%s - out of memory.\n", __func__);
1122                         kfree (ti_manuf_desc);
1123                         return -ENOMEM;
1124                 }
1125
1126                 // Search for type 2 record (firmware record)
1127                 if ((start_address = TIGetDescriptorAddress (serial, I2C_DESC_TYPE_FIRMWARE_BASIC, rom_desc)) != 0) {
1128                         struct ti_i2c_firmware_rec *firmware_version;
1129                         __u8 record;
1130
1131                         dbg ("%s - Found Type FIRMWARE (Type 2) record", __func__);
1132
1133                         firmware_version = kmalloc (sizeof (*firmware_version), GFP_KERNEL);
1134                         if (!firmware_version) {
1135                                 dev_err (dev, "%s - out of memory.\n", __func__);
1136                                 kfree (rom_desc);
1137                                 kfree (ti_manuf_desc);
1138                                 return -ENOMEM;
1139                         }
1140
1141                         // Validate version number                              
1142                         // Read the descriptor data
1143                         status = TIReadRom (serial,
1144                                         start_address+sizeof(struct ti_i2c_desc),
1145                                         sizeof(struct ti_i2c_firmware_rec),
1146                                         (__u8 *)firmware_version);
1147                         if (status) {
1148                                 kfree (firmware_version);
1149                                 kfree (rom_desc);
1150                                 kfree (ti_manuf_desc);
1151                                 return status;
1152                         }
1153
1154                         // Check version number of download with current version in I2c
1155                         download_cur_ver = (firmware_version->Ver_Major << 8) + 
1156                                            (firmware_version->Ver_Minor);
1157                         download_new_ver = (OperationalCodeImageVersion.MajorVersion << 8) +
1158                                            (OperationalCodeImageVersion.MinorVersion);
1159
1160                         dbg ("%s - >>>Firmware Versions Device %d.%d  Driver %d.%d",
1161                              __func__,
1162                              firmware_version->Ver_Major,
1163                              firmware_version->Ver_Minor,
1164                              OperationalCodeImageVersion.MajorVersion,
1165                              OperationalCodeImageVersion.MinorVersion);
1166
1167                         // Check if we have an old version in the I2C and update if necessary
1168                         if (download_cur_ver != download_new_ver) {
1169                                 dbg ("%s - Update I2C Download from %d.%d to %d.%d",
1170                                      __func__,
1171                                      firmware_version->Ver_Major,
1172                                      firmware_version->Ver_Minor,
1173                                      OperationalCodeImageVersion.MajorVersion,
1174                                      OperationalCodeImageVersion.MinorVersion);
1175
1176                                 // In order to update the I2C firmware we must change the type 2 record to type 0xF2.
1177                                 // This will force the UMP to come up in Boot Mode.  Then while in boot mode, the driver 
1178                                 // will download the latest firmware (padded to 15.5k) into the UMP ram. 
1179                                 // And finally when the device comes back up in download mode the driver will cause 
1180                                 // the new firmware to be copied from the UMP Ram to I2C and the firmware will update
1181                                 // the record type from 0xf2 to 0x02.
1182
1183                                 record = I2C_DESC_TYPE_FIRMWARE_BLANK;
1184
1185                                 // Change the I2C Firmware record type to 0xf2 to trigger an update
1186                                 status = TIWriteRom (serial,
1187                                                         start_address,
1188                                                         sizeof(record),
1189                                                         &record);
1190                                 if (status) {
1191                                         kfree (firmware_version);
1192                                         kfree (rom_desc);
1193                                         kfree (ti_manuf_desc);
1194                                         return status;
1195                                 }
1196
1197                                 // verify the write -- must do this in order for write to 
1198                                 // complete before we do the hardware reset
1199                                 status = TIReadRom (serial,
1200                                                         start_address,
1201                                                         sizeof(record),
1202                                                         &record);
1203
1204                                 if (status) {
1205                                         kfree (firmware_version);
1206                                         kfree (rom_desc);
1207                                         kfree (ti_manuf_desc);
1208                                         return status;
1209                                 }
1210
1211                                 if (record != I2C_DESC_TYPE_FIRMWARE_BLANK) {
1212                                         dev_err (dev, "%s - error resetting device\n", __func__);
1213                                         kfree (firmware_version);
1214                                         kfree (rom_desc);
1215                                         kfree (ti_manuf_desc);
1216                                         return -ENODEV;
1217                                 }
1218
1219                                 dbg ("%s - HARDWARE RESET", __func__);
1220
1221                                 // Reset UMP -- Back to BOOT MODE
1222                                 status = TISendVendorRequestSync (serial->serial->dev,
1223                                                                 UMPC_HARDWARE_RESET,    // Request
1224                                                                 0,                      // wValue
1225                                                                 0,                      // wIndex
1226                                                                 NULL,                   // TransferBuffer
1227                                                                 0);                     // TransferBufferLength
1228
1229                                 dbg ( "%s - HARDWARE RESET return %d", __func__, status);
1230
1231                                 /* return an error on purpose. */
1232                                 kfree (firmware_version);
1233                                 kfree (rom_desc);
1234                                 kfree (ti_manuf_desc);
1235                                 return -ENODEV;
1236                         }
1237                         kfree (firmware_version);
1238                 }
1239                 // Search for type 0xF2 record (firmware blank record)
1240                 else if ((start_address = TIGetDescriptorAddress (serial, I2C_DESC_TYPE_FIRMWARE_BLANK, rom_desc)) != 0) {
1241                         #define HEADER_SIZE     (sizeof(struct ti_i2c_desc) + sizeof(struct ti_i2c_firmware_rec))
1242                         __u8 *header;
1243                         __u8 *vheader;
1244
1245                         header  = kmalloc (HEADER_SIZE, GFP_KERNEL);
1246                         if (!header) {
1247                                 dev_err (dev, "%s - out of memory.\n", __func__);
1248                                 kfree (rom_desc);
1249                                 kfree (ti_manuf_desc);
1250                                 return -ENOMEM;
1251                         }
1252                                 
1253                         vheader = kmalloc (HEADER_SIZE, GFP_KERNEL);
1254                         if (!vheader) {
1255                                 dev_err (dev, "%s - out of memory.\n", __func__);
1256                                 kfree (header);
1257                                 kfree (rom_desc);
1258                                 kfree (ti_manuf_desc);
1259                                 return -ENOMEM;
1260                         }
1261                         
1262                         dbg ("%s - Found Type BLANK FIRMWARE (Type F2) record", __func__);
1263
1264                         // In order to update the I2C firmware we must change the type 2 record to type 0xF2.
1265                         // This will force the UMP to come up in Boot Mode.  Then while in boot mode, the driver 
1266                         // will download the latest firmware (padded to 15.5k) into the UMP ram. 
1267                         // And finally when the device comes back up in download mode the driver will cause 
1268                         // the new firmware to be copied from the UMP Ram to I2C and the firmware will update
1269                         // the record type from 0xf2 to 0x02.
1270                         status = BuildI2CFirmwareHeader(header, dev);
1271                         if (status) {
1272                                 kfree (vheader);
1273                                 kfree (header);
1274                                 kfree (rom_desc);
1275                                 kfree (ti_manuf_desc);
1276                                 return status;
1277                         }
1278
1279                         // Update I2C with type 0xf2 record with correct size and checksum
1280                         status = TIWriteRom (serial,
1281                                                 start_address,
1282                                                 HEADER_SIZE,
1283                                                 header);
1284                         if (status) {
1285                                 kfree (vheader);
1286                                 kfree (header);
1287                                 kfree (rom_desc);
1288                                 kfree (ti_manuf_desc);
1289                                 return status;
1290                         }
1291
1292                         // verify the write -- must do this in order for write to 
1293                         // complete before we do the hardware reset
1294                         status = TIReadRom (serial,
1295                                                 start_address,
1296                                                 HEADER_SIZE,
1297                                                 vheader);
1298
1299                         if (status) {
1300                                 dbg ("%s - can't read header back", __func__);
1301                                 kfree (vheader);
1302                                 kfree (header);
1303                                 kfree (rom_desc);
1304                                 kfree (ti_manuf_desc);
1305                                 return status;
1306                         }
1307                         if (memcmp(vheader, header, HEADER_SIZE)) {
1308                                 dbg ("%s - write download record failed", __func__);
1309                                 kfree (vheader);
1310                                 kfree (header);
1311                                 kfree (rom_desc);
1312                                 kfree (ti_manuf_desc);
1313                                 return status;
1314                         }
1315
1316                         kfree (vheader);
1317                         kfree (header);
1318
1319                         dbg ("%s - Start firmware update", __func__);
1320
1321                         // Tell firmware to copy download image into I2C 
1322                         status = TISendVendorRequestSync (serial->serial->dev,
1323                                                 UMPC_COPY_DNLD_TO_I2C,  // Request
1324                                                 0,                      // wValue 
1325                                                 0,                      // wIndex
1326                                                 NULL,                   // TransferBuffer
1327                                                 0);                     // TransferBufferLength
1328
1329                         dbg ("%s - Update complete 0x%x", __func__, status);
1330                         if (status) {
1331                                 dev_err (dev, "%s - UMPC_COPY_DNLD_TO_I2C failed\n", __func__);
1332                                 kfree (rom_desc);
1333                                 kfree (ti_manuf_desc);
1334                                 return status;
1335                         }
1336                 }
1337
1338                 // The device is running the download code
1339                 kfree (rom_desc);
1340                 kfree (ti_manuf_desc);
1341                 return 0;
1342         }
1343
1344         /********************************************************************/
1345         /* Boot Mode */
1346         /********************************************************************/
1347         dbg("%s - RUNNING IN BOOT MODE", __func__);
1348
1349         // Configure the TI device so we can use the BULK pipes for download
1350         status = TIConfigureBootDevice (serial->serial->dev);
1351         if (status)
1352                 return status;
1353
1354         if (le16_to_cpu(serial->serial->dev->descriptor.idVendor) != USB_VENDOR_ID_ION) {
1355                 dbg ("%s - VID = 0x%x", __func__,
1356                      le16_to_cpu(serial->serial->dev->descriptor.idVendor));
1357                 serial->TI_I2C_Type = DTK_ADDR_SPACE_I2C_TYPE_II;
1358                 goto StayInBootMode;
1359         }
1360
1361         // We have an ION device (I2c Must be programmed)
1362         // Determine I2C image type
1363         if (TIGetI2cTypeInBootMode(serial)) {
1364                 goto StayInBootMode;
1365         }
1366
1367         // Registry variable set?
1368         if (TIStayInBootMode) {
1369                 dbg ("%s - TIStayInBootMode", __func__);
1370                 goto StayInBootMode;
1371         }
1372
1373         // Check for ION Vendor ID and that the I2C is valid
1374         if (!TiValidateI2cImage(serial)) {
1375                 struct ti_i2c_image_header *header;
1376                 int i;
1377                 __u8 cs = 0;
1378                 __u8 *buffer;
1379                 int buffer_size;
1380
1381                 /* Validate Hardware version number
1382                  * Read Manufacturing Descriptor from TI Based Edgeport
1383                  */
1384                 ti_manuf_desc = kmalloc (sizeof (*ti_manuf_desc), GFP_KERNEL);
1385                 if (!ti_manuf_desc) {
1386                         dev_err (dev, "%s - out of memory.\n", __func__);
1387                         return -ENOMEM;
1388                 }
1389                 status = TIReadManufDescriptor (serial, (__u8 *)ti_manuf_desc);
1390                 if (status) {
1391                         kfree (ti_manuf_desc);
1392                         goto StayInBootMode;
1393                 }
1394
1395                 // Check for version 2
1396                 if (!ignore_cpu_rev && TI_GET_CPU_REVISION(ti_manuf_desc->CpuRev_BoardRev) < 2) {
1397                         dbg ("%s - Wrong CPU Rev %d (Must be 2)", __func__,
1398                              TI_GET_CPU_REVISION(ti_manuf_desc->CpuRev_BoardRev));
1399                         kfree (ti_manuf_desc);
1400                         goto StayInBootMode;
1401                 }
1402
1403                 kfree (ti_manuf_desc);
1404
1405                 // In order to update the I2C firmware we must change the type 2 record to type 0xF2.
1406                 // This will force the UMP to come up in Boot Mode.  Then while in boot mode, the driver 
1407                 // will download the latest firmware (padded to 15.5k) into the UMP ram. 
1408                 // And finally when the device comes back up in download mode the driver will cause 
1409                 // the new firmware to be copied from the UMP Ram to I2C and the firmware will update
1410                 // the record type from 0xf2 to 0x02.
1411                 
1412                 /*
1413                  * Do we really have to copy the whole firmware image,
1414                  * or could we do this in place!
1415                  */
1416
1417                 // Allocate a 15.5k buffer + 3 byte header
1418                 buffer_size = (((1024 * 16) - 512) + sizeof(struct ti_i2c_image_header));
1419                 buffer = kmalloc (buffer_size, GFP_KERNEL);
1420                 if (!buffer) {
1421                         dev_err (dev, "%s - out of memory\n", __func__);
1422                         return -ENOMEM;
1423                 }
1424                 
1425                 // Initialize the buffer to 0xff (pad the buffer)
1426                 memset (buffer, 0xff, buffer_size);
1427
1428                 memcpy (buffer, &PagableOperationalCodeImage[0], PagableOperationalCodeSize);
1429
1430                 for(i = sizeof(struct ti_i2c_image_header); i < buffer_size; i++) {
1431                         cs = (__u8)(cs + buffer[i]);
1432                 }
1433                 
1434                 header = (struct ti_i2c_image_header *)buffer;
1435                 
1436                 // update length and checksum after padding
1437                 header->Length   = cpu_to_le16((__u16)(buffer_size - sizeof(struct ti_i2c_image_header)));
1438                 header->CheckSum = cs;
1439
1440                 // Download the operational code 
1441                 dbg ("%s - Downloading operational code image (TI UMP)", __func__);
1442                 status = TIDownloadCodeImage (serial, buffer, buffer_size);
1443
1444                 kfree (buffer);
1445
1446                 if (status) {
1447                         dbg ("%s - Error downloading operational code image", __func__);
1448                         return status;
1449                 }
1450
1451                 // Device will reboot
1452                 serial->product_info.TiMode = TI_MODE_TRANSITIONING;
1453
1454                 dbg ("%s - Download successful -- Device rebooting...", __func__);
1455
1456                 /* return an error on purpose */
1457                 return -ENODEV;
1458         }
1459
1460 StayInBootMode:
1461         // Eprom is invalid or blank stay in boot mode
1462         dbg("%s - STAYING IN BOOT MODE", __func__);
1463         serial->product_info.TiMode = TI_MODE_BOOT;
1464
1465         return 0;
1466 }
1467
1468
1469 static int TISetDtr (struct edgeport_port *port)
1470 {
1471         int port_number = port->port->number - port->port->serial->minor;
1472
1473         dbg ("%s", __func__);
1474         port->shadow_mcr |= MCR_DTR;
1475
1476         return TIWriteCommandSync (port->port->serial->dev,
1477                                 UMPC_SET_CLR_DTR,
1478                                 (__u8)(UMPM_UART1_PORT + port_number),
1479                                 1,      /* set */
1480                                 NULL,
1481                                 0);
1482 }
1483
1484 static int TIClearDtr (struct edgeport_port *port)
1485 {
1486         int port_number = port->port->number - port->port->serial->minor;
1487
1488         dbg ("%s", __func__);
1489         port->shadow_mcr &= ~MCR_DTR;
1490
1491         return TIWriteCommandSync (port->port->serial->dev,
1492                                 UMPC_SET_CLR_DTR,
1493                                 (__u8)(UMPM_UART1_PORT + port_number),
1494                                 0,      /* clear */
1495                                 NULL,
1496                                 0);
1497 }
1498
1499 static int TISetRts (struct edgeport_port *port)
1500 {
1501         int port_number = port->port->number - port->port->serial->minor;
1502
1503         dbg ("%s", __func__);
1504         port->shadow_mcr |= MCR_RTS;
1505
1506         return TIWriteCommandSync (port->port->serial->dev,
1507                                 UMPC_SET_CLR_RTS,
1508                                 (__u8)(UMPM_UART1_PORT + port_number),
1509                                 1,      /* set */
1510                                 NULL,
1511                                 0);
1512 }
1513
1514 static int TIClearRts (struct edgeport_port *port)
1515 {
1516         int port_number = port->port->number - port->port->serial->minor;
1517
1518         dbg ("%s", __func__);
1519         port->shadow_mcr &= ~MCR_RTS;
1520
1521         return TIWriteCommandSync (port->port->serial->dev,
1522                                 UMPC_SET_CLR_RTS,
1523                                 (__u8)(UMPM_UART1_PORT + port_number),
1524                                 0,      /* clear */
1525                                 NULL,
1526                                 0);
1527 }
1528
1529 static int TISetLoopBack (struct edgeport_port *port)
1530 {
1531         int port_number = port->port->number - port->port->serial->minor;
1532
1533         dbg ("%s", __func__);
1534
1535         return TIWriteCommandSync (port->port->serial->dev,
1536                                 UMPC_SET_CLR_LOOPBACK,
1537                                 (__u8)(UMPM_UART1_PORT + port_number),
1538                                 1,      /* set */
1539                                 NULL,
1540                                 0);
1541 }
1542
1543 static int TIClearLoopBack (struct edgeport_port *port)
1544 {
1545         int port_number = port->port->number - port->port->serial->minor;
1546
1547         dbg ("%s", __func__);
1548
1549         return TIWriteCommandSync (port->port->serial->dev,
1550                                 UMPC_SET_CLR_LOOPBACK,
1551                                 (__u8)(UMPM_UART1_PORT + port_number),
1552                                 0,      /* clear */
1553                                 NULL,
1554                                 0);
1555 }
1556
1557 static int TISetBreak (struct edgeport_port *port)
1558 {
1559         int port_number = port->port->number - port->port->serial->minor;
1560
1561         dbg ("%s", __func__);
1562
1563         return TIWriteCommandSync (port->port->serial->dev,
1564                                 UMPC_SET_CLR_BREAK,
1565                                 (__u8)(UMPM_UART1_PORT + port_number),
1566                                 1,      /* set */
1567                                 NULL,
1568                                 0);
1569 }
1570
1571 static int TIClearBreak (struct edgeport_port *port)
1572 {
1573         int port_number = port->port->number - port->port->serial->minor;
1574
1575         dbg ("%s", __func__);
1576
1577         return TIWriteCommandSync (port->port->serial->dev,
1578                                 UMPC_SET_CLR_BREAK,
1579                                 (__u8)(UMPM_UART1_PORT + port_number),
1580                                 0,      /* clear */
1581                                 NULL,
1582                                 0);
1583 }
1584
1585 static int TIRestoreMCR (struct edgeport_port *port, __u8 mcr)
1586 {
1587         int status = 0;
1588
1589         dbg ("%s - %x", __func__, mcr);
1590
1591         if (mcr & MCR_DTR)
1592                 status = TISetDtr (port);
1593         else
1594                 status = TIClearDtr (port);
1595
1596         if (status)
1597                 return status;
1598
1599         if (mcr & MCR_RTS)
1600                 status = TISetRts (port);
1601         else
1602                 status = TIClearRts (port);
1603
1604         if (status)
1605                 return status;
1606
1607         if (mcr & MCR_LOOPBACK)
1608                 status = TISetLoopBack (port);
1609         else
1610                 status = TIClearLoopBack (port);
1611
1612         return status;
1613 }
1614
1615
1616
1617 /* Convert TI LSR to standard UART flags */
1618 static __u8 MapLineStatus (__u8 ti_lsr)
1619 {
1620         __u8 lsr = 0;
1621
1622 #define MAP_FLAG(flagUmp, flagUart)    \
1623         if (ti_lsr & flagUmp) \
1624                 lsr |= flagUart;
1625
1626         MAP_FLAG(UMP_UART_LSR_OV_MASK, LSR_OVER_ERR)    /* overrun */
1627         MAP_FLAG(UMP_UART_LSR_PE_MASK, LSR_PAR_ERR)     /* parity error */
1628         MAP_FLAG(UMP_UART_LSR_FE_MASK, LSR_FRM_ERR)     /* framing error */
1629         MAP_FLAG(UMP_UART_LSR_BR_MASK, LSR_BREAK)       /* break detected */
1630         MAP_FLAG(UMP_UART_LSR_RX_MASK, LSR_RX_AVAIL)    /* receive data available */
1631         MAP_FLAG(UMP_UART_LSR_TX_MASK, LSR_TX_EMPTY)    /* transmit holding register empty */
1632
1633 #undef MAP_FLAG
1634
1635         return lsr;
1636 }
1637
1638 static void handle_new_msr (struct edgeport_port *edge_port, __u8 msr)
1639 {
1640         struct async_icount *icount;
1641         struct tty_struct *tty;
1642
1643         dbg ("%s - %02x", __func__, msr);
1644
1645         if (msr & (EDGEPORT_MSR_DELTA_CTS | EDGEPORT_MSR_DELTA_DSR | EDGEPORT_MSR_DELTA_RI | EDGEPORT_MSR_DELTA_CD)) {
1646                 icount = &edge_port->icount;
1647
1648                 /* update input line counters */
1649                 if (msr & EDGEPORT_MSR_DELTA_CTS)
1650                         icount->cts++;
1651                 if (msr & EDGEPORT_MSR_DELTA_DSR)
1652                         icount->dsr++;
1653                 if (msr & EDGEPORT_MSR_DELTA_CD)
1654                         icount->dcd++;
1655                 if (msr & EDGEPORT_MSR_DELTA_RI)
1656                         icount->rng++;
1657                 wake_up_interruptible (&edge_port->delta_msr_wait);
1658         }
1659
1660         /* Save the new modem status */
1661         edge_port->shadow_msr = msr & 0xf0;
1662
1663         tty = edge_port->port->tty;
1664         /* handle CTS flow control */
1665         if (tty && C_CRTSCTS(tty)) {
1666                 if (msr & EDGEPORT_MSR_CTS) {
1667                         tty->hw_stopped = 0;
1668                         tty_wakeup(tty);
1669                 } else {
1670                         tty->hw_stopped = 1;
1671                 }
1672         }
1673
1674         return;
1675 }
1676
1677 static void handle_new_lsr (struct edgeport_port *edge_port, int lsr_data, __u8 lsr, __u8 data)
1678 {
1679         struct async_icount *icount;
1680         __u8 new_lsr = (__u8)(lsr & (__u8)(LSR_OVER_ERR | LSR_PAR_ERR | LSR_FRM_ERR | LSR_BREAK));
1681
1682         dbg ("%s - %02x", __func__, new_lsr);
1683
1684         edge_port->shadow_lsr = lsr;
1685
1686         if (new_lsr & LSR_BREAK) {
1687                 /*
1688                  * Parity and Framing errors only count if they
1689                  * occur exclusive of a break being received.
1690                  */
1691                 new_lsr &= (__u8)(LSR_OVER_ERR | LSR_BREAK);
1692         }
1693
1694         /* Place LSR data byte into Rx buffer */
1695         if (lsr_data && edge_port->port->tty)
1696                 edge_tty_recv(&edge_port->port->dev, edge_port->port->tty, &data, 1);
1697
1698         /* update input line counters */
1699         icount = &edge_port->icount;
1700         if (new_lsr & LSR_BREAK)
1701                 icount->brk++;
1702         if (new_lsr & LSR_OVER_ERR)
1703                 icount->overrun++;
1704         if (new_lsr & LSR_PAR_ERR)
1705                 icount->parity++;
1706         if (new_lsr & LSR_FRM_ERR)
1707                 icount->frame++;
1708 }
1709
1710
1711 static void edge_interrupt_callback (struct urb *urb)
1712 {
1713         struct edgeport_serial *edge_serial = (struct edgeport_serial *)urb->context;
1714         struct usb_serial_port *port;
1715         struct edgeport_port *edge_port;
1716         unsigned char *data = urb->transfer_buffer;
1717         int length = urb->actual_length;
1718         int port_number;
1719         int function;
1720         int retval;
1721         __u8 lsr;
1722         __u8 msr;
1723         int status = urb->status;
1724
1725         dbg("%s", __func__);
1726
1727         switch (status) {
1728         case 0:
1729                 /* success */
1730                 break;
1731         case -ECONNRESET:
1732         case -ENOENT:
1733         case -ESHUTDOWN:
1734                 /* this urb is terminated, clean up */
1735                 dbg("%s - urb shutting down with status: %d",
1736                     __func__, status);
1737                 return;
1738         default:
1739                 dev_err(&urb->dev->dev, "%s - nonzero urb status received: "
1740                         "%d\n", __func__, status);
1741                 goto exit;
1742         }
1743
1744         if (!length) {
1745                 dbg ("%s - no data in urb", __func__);
1746                 goto exit;
1747         }
1748                 
1749         usb_serial_debug_data(debug, &edge_serial->serial->dev->dev, __func__, length, data);
1750                 
1751         if (length != 2) {
1752                 dbg ("%s - expecting packet of size 2, got %d", __func__, length);
1753                 goto exit;
1754         }
1755
1756         port_number = TIUMP_GET_PORT_FROM_CODE (data[0]);
1757         function    = TIUMP_GET_FUNC_FROM_CODE (data[0]);
1758         dbg ("%s - port_number %d, function %d, info 0x%x",
1759              __func__, port_number, function, data[1]);
1760         port = edge_serial->serial->port[port_number];
1761         edge_port = usb_get_serial_port_data(port);
1762         if (!edge_port) {
1763                 dbg ("%s - edge_port not found", __func__);
1764                 return;
1765         }
1766         switch (function) {
1767         case TIUMP_INTERRUPT_CODE_LSR:
1768                 lsr = MapLineStatus(data[1]);
1769                 if (lsr & UMP_UART_LSR_DATA_MASK) {
1770                         /* Save the LSR event for bulk read completion routine */
1771                         dbg ("%s - LSR Event Port %u LSR Status = %02x",
1772                              __func__, port_number, lsr);
1773                         edge_port->lsr_event = 1;
1774                         edge_port->lsr_mask = lsr;
1775                 } else {
1776                         dbg ("%s - ===== Port %d LSR Status = %02x ======",
1777                              __func__, port_number, lsr);
1778                         handle_new_lsr (edge_port, 0, lsr, 0);
1779                 }
1780                 break;
1781
1782         case TIUMP_INTERRUPT_CODE_MSR:  // MSR
1783                 /* Copy MSR from UMP */
1784                 msr = data[1];
1785                 dbg ("%s - ===== Port %u MSR Status = %02x ======\n",
1786                      __func__, port_number, msr);
1787                 handle_new_msr (edge_port, msr);
1788                 break;
1789
1790         default:
1791                 dev_err (&urb->dev->dev, "%s - Unknown Interrupt code from UMP %x\n",
1792                          __func__, data[1]);
1793                 break;
1794                 
1795         }
1796
1797 exit:
1798         retval = usb_submit_urb (urb, GFP_ATOMIC);
1799         if (retval)
1800                 dev_err (&urb->dev->dev, "%s - usb_submit_urb failed with result %d\n",
1801                          __func__, retval);
1802 }
1803
1804 static void edge_bulk_in_callback (struct urb *urb)
1805 {
1806         struct edgeport_port *edge_port = (struct edgeport_port *)urb->context;
1807         unsigned char *data = urb->transfer_buffer;
1808         struct tty_struct *tty;
1809         int retval = 0;
1810         int port_number;
1811         int status = urb->status;
1812
1813         dbg("%s", __func__);
1814
1815         switch (status) {
1816         case 0:
1817                 /* success */
1818                 break;
1819         case -ECONNRESET:
1820         case -ENOENT:
1821         case -ESHUTDOWN:
1822                 /* this urb is terminated, clean up */
1823                 dbg("%s - urb shutting down with status: %d",
1824                     __func__, status);
1825                 return;
1826         default:
1827                 dev_err (&urb->dev->dev,"%s - nonzero read bulk status received: %d\n",
1828                      __func__, status);
1829         }
1830
1831         if (status == -EPIPE)
1832                 goto exit;
1833
1834         if (status) {
1835                 dev_err(&urb->dev->dev,"%s - stopping read!\n", __func__);
1836                 return;
1837         }
1838
1839         port_number = edge_port->port->number - edge_port->port->serial->minor;
1840
1841         if (edge_port->lsr_event) {
1842                 edge_port->lsr_event = 0;
1843                 dbg ("%s ===== Port %u LSR Status = %02x, Data = %02x ======",
1844                      __func__, port_number, edge_port->lsr_mask, *data);
1845                 handle_new_lsr (edge_port, 1, edge_port->lsr_mask, *data);
1846                 /* Adjust buffer length/pointer */
1847                 --urb->actual_length;
1848                 ++data;
1849         }
1850
1851         tty = edge_port->port->tty;
1852         if (tty && urb->actual_length) {
1853                 usb_serial_debug_data(debug, &edge_port->port->dev, __func__, urb->actual_length, data);
1854
1855                 if (edge_port->close_pending) {
1856                         dbg ("%s - close is pending, dropping data on the floor.", __func__);
1857                 } else {
1858                         edge_tty_recv(&edge_port->port->dev, tty, data, urb->actual_length);
1859                 }
1860                 edge_port->icount.rx += urb->actual_length;
1861         }
1862
1863 exit:
1864         /* continue read unless stopped */
1865         spin_lock(&edge_port->ep_lock);
1866         if (edge_port->ep_read_urb_state == EDGE_READ_URB_RUNNING) {
1867                 urb->dev = edge_port->port->serial->dev;
1868                 retval = usb_submit_urb(urb, GFP_ATOMIC);
1869         } else if (edge_port->ep_read_urb_state == EDGE_READ_URB_STOPPING) {
1870                 edge_port->ep_read_urb_state = EDGE_READ_URB_STOPPED;
1871         }
1872         spin_unlock(&edge_port->ep_lock);
1873         if (retval)
1874                 dev_err (&urb->dev->dev, "%s - usb_submit_urb failed with result %d\n",
1875                          __func__, retval);
1876 }
1877
1878 static void edge_tty_recv(struct device *dev, struct tty_struct *tty, unsigned char *data, int length)
1879 {
1880         int cnt;
1881
1882         do {
1883                 cnt = tty_buffer_request_room(tty, length);
1884                 if (cnt < length) {
1885                         dev_err(dev, "%s - dropping data, %d bytes lost\n",
1886                                 __func__, length - cnt);
1887                         if(cnt == 0)
1888                                 break;
1889                 }
1890                 tty_insert_flip_string(tty, data, cnt);
1891                 data += cnt;
1892                 length -= cnt;
1893         } while (length > 0);
1894
1895         tty_flip_buffer_push(tty);
1896 }
1897
1898 static void edge_bulk_out_callback (struct urb *urb)
1899 {
1900         struct usb_serial_port *port = (struct usb_serial_port *)urb->context;
1901         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1902         int status = urb->status;
1903
1904         dbg ("%s - port %d", __func__, port->number);
1905
1906         edge_port->ep_write_urb_in_use = 0;
1907
1908         switch (status) {
1909         case 0:
1910                 /* success */
1911                 break;
1912         case -ECONNRESET:
1913         case -ENOENT:
1914         case -ESHUTDOWN:
1915                 /* this urb is terminated, clean up */
1916                 dbg("%s - urb shutting down with status: %d",
1917                     __func__, status);
1918                 return;
1919         default:
1920                 dev_err(&urb->dev->dev, "%s - nonzero write bulk status "
1921                         "received: %d\n", __func__, status);
1922         }
1923
1924         /* send any buffered data */
1925         edge_send(port);
1926 }
1927
1928 static int edge_open (struct usb_serial_port *port, struct file * filp)
1929 {
1930         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
1931         struct edgeport_serial *edge_serial;
1932         struct usb_device *dev;
1933         struct urb *urb;
1934         int port_number;
1935         int status;
1936         u16 open_settings;
1937         u8 transaction_timeout;
1938
1939         dbg("%s - port %d", __func__, port->number);
1940
1941         if (edge_port == NULL)
1942                 return -ENODEV;
1943
1944         port->tty->low_latency = low_latency;
1945
1946         port_number = port->number - port->serial->minor;
1947         switch (port_number) {
1948                 case 0:
1949                         edge_port->uart_base = UMPMEM_BASE_UART1;
1950                         edge_port->dma_address = UMPD_OEDB1_ADDRESS;
1951                         break;
1952                 case 1:
1953                         edge_port->uart_base = UMPMEM_BASE_UART2;
1954                         edge_port->dma_address = UMPD_OEDB2_ADDRESS;
1955                         break;
1956                 default:
1957                         dev_err (&port->dev, "Unknown port number!!!\n");
1958                         return -ENODEV;
1959         }
1960
1961         dbg ("%s - port_number = %d, uart_base = %04x, dma_address = %04x",
1962              __func__, port_number, edge_port->uart_base, edge_port->dma_address);
1963
1964         dev = port->serial->dev;
1965
1966         memset (&(edge_port->icount), 0x00, sizeof(edge_port->icount));
1967         init_waitqueue_head (&edge_port->delta_msr_wait);
1968
1969         /* turn off loopback */
1970         status = TIClearLoopBack (edge_port);
1971         if (status) {
1972                 dev_err(&port->dev,"%s - cannot send clear loopback command, %d\n",
1973                         __func__, status);
1974                 return status;
1975         }
1976         
1977         /* set up the port settings */
1978         edge_set_termios (port, port->tty->termios);
1979
1980         /* open up the port */
1981
1982         /* milliseconds to timeout for DMA transfer */
1983         transaction_timeout = 2;
1984
1985         edge_port->ump_read_timeout = max (20, ((transaction_timeout * 3) / 2) );
1986
1987         // milliseconds to timeout for DMA transfer
1988         open_settings = (u8)(UMP_DMA_MODE_CONTINOUS | 
1989                              UMP_PIPE_TRANS_TIMEOUT_ENA | 
1990                              (transaction_timeout << 2));
1991
1992         dbg ("%s - Sending UMPC_OPEN_PORT", __func__);
1993
1994         /* Tell TI to open and start the port */
1995         status = TIWriteCommandSync (dev,
1996                                         UMPC_OPEN_PORT,
1997                                         (u8)(UMPM_UART1_PORT + port_number),
1998                                         open_settings,
1999                                         NULL,
2000                                         0);
2001         if (status) {
2002                 dev_err(&port->dev,"%s - cannot send open command, %d\n", __func__, status);
2003                 return status;
2004         }
2005
2006         /* Start the DMA? */
2007         status = TIWriteCommandSync (dev,
2008                                         UMPC_START_PORT,
2009                                         (u8)(UMPM_UART1_PORT + port_number),
2010                                         0,
2011                                         NULL,
2012                                         0);
2013         if (status) {
2014                 dev_err(&port->dev,"%s - cannot send start DMA command, %d\n", __func__, status);
2015                 return status;
2016         }
2017
2018         /* Clear TX and RX buffers in UMP */
2019         status = TIPurgeDataSync (port, UMP_PORT_DIR_OUT | UMP_PORT_DIR_IN);
2020         if (status) {
2021                 dev_err(&port->dev,"%s - cannot send clear buffers command, %d\n", __func__, status);
2022                 return status;
2023         }
2024
2025         /* Read Initial MSR */
2026         status = TIReadVendorRequestSync (dev,
2027                                         UMPC_READ_MSR,  // Request
2028                                         0,              // wValue
2029                                         (__u16)(UMPM_UART1_PORT + port_number), // wIndex (Address)
2030                                         &edge_port->shadow_msr,                 // TransferBuffer
2031                                         1);                                     // TransferBufferLength
2032         if (status) {
2033                 dev_err(&port->dev,"%s - cannot send read MSR command, %d\n", __func__, status);
2034                 return status;
2035         }
2036
2037         dbg ("ShadowMSR 0x%X", edge_port->shadow_msr);
2038  
2039         /* Set Initial MCR */
2040         edge_port->shadow_mcr = MCR_RTS | MCR_DTR;
2041         dbg ("ShadowMCR 0x%X", edge_port->shadow_mcr);
2042
2043         edge_serial = edge_port->edge_serial;
2044         if (mutex_lock_interruptible(&edge_serial->es_lock))
2045                 return -ERESTARTSYS;
2046         if (edge_serial->num_ports_open == 0) {
2047                 /* we are the first port to be opened, let's post the interrupt urb */
2048                 urb = edge_serial->serial->port[0]->interrupt_in_urb;
2049                 if (!urb) {
2050                         dev_err (&port->dev, "%s - no interrupt urb present, exiting\n", __func__);
2051                         status = -EINVAL;
2052                         goto release_es_lock;
2053                 }
2054                 urb->complete = edge_interrupt_callback;
2055                 urb->context = edge_serial;
2056                 urb->dev = dev;
2057                 status = usb_submit_urb (urb, GFP_KERNEL);
2058                 if (status) {
2059                         dev_err (&port->dev, "%s - usb_submit_urb failed with value %d\n", __func__, status);
2060                         goto release_es_lock;
2061                 }
2062         }
2063
2064         /*
2065          * reset the data toggle on the bulk endpoints to work around bug in
2066          * host controllers where things get out of sync some times
2067          */
2068         usb_clear_halt (dev, port->write_urb->pipe);
2069         usb_clear_halt (dev, port->read_urb->pipe);
2070
2071         /* start up our bulk read urb */
2072         urb = port->read_urb;
2073         if (!urb) {
2074                 dev_err (&port->dev, "%s - no read urb present, exiting\n", __func__);
2075                 status = -EINVAL;
2076                 goto unlink_int_urb;
2077         }
2078         edge_port->ep_read_urb_state = EDGE_READ_URB_RUNNING;
2079         urb->complete = edge_bulk_in_callback;
2080         urb->context = edge_port;
2081         urb->dev = dev;
2082         status = usb_submit_urb (urb, GFP_KERNEL);
2083         if (status) {
2084                 dev_err (&port->dev, "%s - read bulk usb_submit_urb failed with value %d\n", __func__, status);
2085                 goto unlink_int_urb;
2086         }
2087
2088         ++edge_serial->num_ports_open;
2089
2090         dbg("%s - exited", __func__);
2091
2092         goto release_es_lock;
2093
2094 unlink_int_urb:
2095         if (edge_port->edge_serial->num_ports_open == 0)
2096                 usb_kill_urb(port->serial->port[0]->interrupt_in_urb);
2097 release_es_lock:
2098         mutex_unlock(&edge_serial->es_lock);
2099         return status;
2100 }
2101
2102 static void edge_close (struct usb_serial_port *port, struct file *filp)
2103 {
2104         struct edgeport_serial *edge_serial;
2105         struct edgeport_port *edge_port;
2106         int port_number;
2107         int status;
2108
2109         dbg("%s - port %d", __func__, port->number);
2110                          
2111         edge_serial = usb_get_serial_data(port->serial);
2112         edge_port = usb_get_serial_port_data(port);
2113         if ((edge_serial == NULL) || (edge_port == NULL))
2114                 return;
2115         
2116         /* The bulkreadcompletion routine will check 
2117          * this flag and dump add read data */
2118         edge_port->close_pending = 1;
2119
2120         /* chase the port close and flush */
2121         TIChasePort (edge_port, (HZ*closing_wait)/100, 1);
2122
2123         usb_kill_urb(port->read_urb);
2124         usb_kill_urb(port->write_urb);
2125         edge_port->ep_write_urb_in_use = 0;
2126
2127         /* assuming we can still talk to the device,
2128          * send a close port command to it */
2129         dbg("%s - send umpc_close_port", __func__);
2130         port_number = port->number - port->serial->minor;
2131         status = TIWriteCommandSync (port->serial->dev,
2132                                      UMPC_CLOSE_PORT,
2133                                      (__u8)(UMPM_UART1_PORT + port_number),
2134                                      0,
2135                                      NULL,
2136                                      0);
2137         mutex_lock(&edge_serial->es_lock);
2138         --edge_port->edge_serial->num_ports_open;
2139         if (edge_port->edge_serial->num_ports_open <= 0) {
2140                 /* last port is now closed, let's shut down our interrupt urb */
2141                 usb_kill_urb(port->serial->port[0]->interrupt_in_urb);
2142                 edge_port->edge_serial->num_ports_open = 0;
2143         }
2144         mutex_unlock(&edge_serial->es_lock);
2145         edge_port->close_pending = 0;
2146
2147         dbg("%s - exited", __func__);
2148 }
2149
2150 static int edge_write (struct usb_serial_port *port, const unsigned char *data, int count)
2151 {
2152         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2153         unsigned long flags;
2154
2155         dbg("%s - port %d", __func__, port->number);
2156
2157         if (count == 0) {
2158                 dbg("%s - write request of 0 bytes", __func__);
2159                 return 0;
2160         }
2161
2162         if (edge_port == NULL)
2163                 return -ENODEV;
2164         if (edge_port->close_pending == 1)
2165                 return -ENODEV;
2166
2167         spin_lock_irqsave(&edge_port->ep_lock, flags);
2168         count = edge_buf_put(edge_port->ep_out_buf, data, count);
2169         spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2170
2171         edge_send(port);
2172
2173         return count;
2174 }
2175
2176 static void edge_send(struct usb_serial_port *port)
2177 {
2178         int count, result;
2179         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2180         struct tty_struct *tty = port->tty;
2181         unsigned long flags;
2182
2183
2184         dbg("%s - port %d", __func__, port->number);
2185
2186         spin_lock_irqsave(&edge_port->ep_lock, flags);
2187
2188         if (edge_port->ep_write_urb_in_use) {
2189                 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2190                 return;
2191         }
2192
2193         count = edge_buf_get(edge_port->ep_out_buf,
2194                                 port->write_urb->transfer_buffer,
2195                                 port->bulk_out_size);
2196
2197         if (count == 0) {
2198                 spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2199                 return;
2200         }
2201
2202         edge_port->ep_write_urb_in_use = 1;
2203
2204         spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2205
2206         usb_serial_debug_data(debug, &port->dev, __func__, count, port->write_urb->transfer_buffer);
2207
2208         /* set up our urb */
2209         usb_fill_bulk_urb (port->write_urb, port->serial->dev,
2210                            usb_sndbulkpipe (port->serial->dev,
2211                                             port->bulk_out_endpointAddress),
2212                            port->write_urb->transfer_buffer, count,
2213                            edge_bulk_out_callback,
2214                            port);
2215
2216         /* send the data out the bulk port */
2217         result = usb_submit_urb(port->write_urb, GFP_ATOMIC);
2218         if (result) {
2219                 dev_err(&port->dev, "%s - failed submitting write urb, error %d\n", __func__, result);
2220                 edge_port->ep_write_urb_in_use = 0;
2221                 // TODO: reschedule edge_send
2222         } else {
2223                 edge_port->icount.tx += count;
2224         }
2225
2226         /* wakeup any process waiting for writes to complete */
2227         /* there is now more room in the buffer for new writes */
2228         if (tty) {
2229                 /* let the tty driver wakeup if it has a special write_wakeup function */
2230                 tty_wakeup(tty);
2231         }
2232 }
2233
2234 static int edge_write_room (struct usb_serial_port *port)
2235 {
2236         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2237         int room = 0;
2238         unsigned long flags;
2239
2240         dbg("%s - port %d", __func__, port->number);
2241
2242         if (edge_port == NULL)
2243                 return -ENODEV;
2244         if (edge_port->close_pending == 1)
2245                 return -ENODEV;
2246
2247         spin_lock_irqsave(&edge_port->ep_lock, flags);
2248         room = edge_buf_space_avail(edge_port->ep_out_buf);
2249         spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2250
2251         dbg("%s - returns %d", __func__, room);
2252         return room;
2253 }
2254
2255 static int edge_chars_in_buffer (struct usb_serial_port *port)
2256 {
2257         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2258         int chars = 0;
2259         unsigned long flags;
2260
2261         dbg("%s - port %d", __func__, port->number);
2262
2263         if (edge_port == NULL)
2264                 return -ENODEV;
2265         if (edge_port->close_pending == 1)
2266                 return -ENODEV;
2267
2268         spin_lock_irqsave(&edge_port->ep_lock, flags);
2269         chars = edge_buf_data_avail(edge_port->ep_out_buf);
2270         spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2271
2272         dbg ("%s - returns %d", __func__, chars);
2273         return chars;
2274 }
2275
2276 static void edge_throttle (struct usb_serial_port *port)
2277 {
2278         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2279         struct tty_struct *tty;
2280         int status;
2281
2282         dbg("%s - port %d", __func__, port->number);
2283
2284         if (edge_port == NULL)
2285                 return;
2286
2287         tty = port->tty;
2288         if (!tty) {
2289                 dbg ("%s - no tty available", __func__);
2290                 return;
2291         }
2292
2293         /* if we are implementing XON/XOFF, send the stop character */
2294         if (I_IXOFF(tty)) {
2295                 unsigned char stop_char = STOP_CHAR(tty);
2296                 status = edge_write (port, &stop_char, 1);
2297                 if (status <= 0) {
2298                         dev_err(&port->dev, "%s - failed to write stop character, %d\n", __func__, status);
2299                 }
2300         }
2301
2302         /* if we are implementing RTS/CTS, stop reads */
2303         /* and the Edgeport will clear the RTS line */
2304         if (C_CRTSCTS(tty))
2305                 stop_read(edge_port);
2306
2307 }
2308
2309 static void edge_unthrottle (struct usb_serial_port *port)
2310 {
2311         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2312         struct tty_struct *tty;
2313         int status;
2314
2315         dbg("%s - port %d", __func__, port->number);
2316
2317         if (edge_port == NULL)
2318                 return;
2319
2320         tty = port->tty;
2321         if (!tty) {
2322                 dbg ("%s - no tty available", __func__);
2323                 return;
2324         }
2325
2326         /* if we are implementing XON/XOFF, send the start character */
2327         if (I_IXOFF(tty)) {
2328                 unsigned char start_char = START_CHAR(tty);
2329                 status = edge_write (port, &start_char, 1);
2330                 if (status <= 0) {
2331                         dev_err(&port->dev, "%s - failed to write start character, %d\n", __func__, status);
2332                 }
2333         }
2334
2335         /* if we are implementing RTS/CTS, restart reads */
2336         /* are the Edgeport will assert the RTS line */
2337         if (C_CRTSCTS(tty)) {
2338                 status = restart_read(edge_port);
2339                 if (status)
2340                         dev_err(&port->dev, "%s - read bulk usb_submit_urb failed with value %d\n", __func__, status);
2341         }
2342
2343 }
2344
2345 static void stop_read(struct edgeport_port *edge_port)
2346 {
2347         unsigned long flags;
2348
2349         spin_lock_irqsave(&edge_port->ep_lock, flags);
2350
2351         if (edge_port->ep_read_urb_state == EDGE_READ_URB_RUNNING)
2352                 edge_port->ep_read_urb_state = EDGE_READ_URB_STOPPING;
2353         edge_port->shadow_mcr &= ~MCR_RTS;
2354
2355         spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2356 }
2357
2358 static int restart_read(struct edgeport_port *edge_port)
2359 {
2360         struct urb *urb;
2361         int status = 0;
2362         unsigned long flags;
2363
2364         spin_lock_irqsave(&edge_port->ep_lock, flags);
2365
2366         if (edge_port->ep_read_urb_state == EDGE_READ_URB_STOPPED) {
2367                 urb = edge_port->port->read_urb;
2368                 urb->complete = edge_bulk_in_callback;
2369                 urb->context = edge_port;
2370                 urb->dev = edge_port->port->serial->dev;
2371                 status = usb_submit_urb(urb, GFP_ATOMIC);
2372         }
2373         edge_port->ep_read_urb_state = EDGE_READ_URB_RUNNING;
2374         edge_port->shadow_mcr |= MCR_RTS;
2375
2376         spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2377
2378         return status;
2379 }
2380
2381 static void change_port_settings (struct edgeport_port *edge_port, struct ktermios *old_termios)
2382 {
2383         struct ump_uart_config *config;
2384         struct tty_struct *tty;
2385         int baud;
2386         unsigned cflag;
2387         int status;
2388         int port_number = edge_port->port->number - edge_port->port->serial->minor;
2389
2390         dbg("%s - port %d", __func__, edge_port->port->number);
2391
2392         tty = edge_port->port->tty;
2393
2394         config = kmalloc (sizeof (*config), GFP_KERNEL);
2395         if (!config) {
2396                 dev_err (&edge_port->port->dev, "%s - out of memory\n", __func__);
2397                 return;
2398         }
2399
2400         cflag = tty->termios->c_cflag;
2401
2402         config->wFlags = 0;
2403
2404         /* These flags must be set */
2405         config->wFlags |= UMP_MASK_UART_FLAGS_RECEIVE_MS_INT;
2406         config->wFlags |= UMP_MASK_UART_FLAGS_AUTO_START_ON_ERR;
2407         config->bUartMode = (__u8)(edge_port->bUartMode);
2408
2409         switch (cflag & CSIZE) {
2410                 case CS5:
2411                             config->bDataBits = UMP_UART_CHAR5BITS;
2412                             dbg ("%s - data bits = 5", __func__);
2413                             break;
2414                 case CS6:
2415                             config->bDataBits = UMP_UART_CHAR6BITS;
2416                             dbg ("%s - data bits = 6", __func__);
2417                             break;
2418                 case CS7:
2419                             config->bDataBits = UMP_UART_CHAR7BITS;
2420                             dbg ("%s - data bits = 7", __func__);
2421                             break;
2422                 default:
2423                 case CS8:
2424                             config->bDataBits = UMP_UART_CHAR8BITS;
2425                             dbg ("%s - data bits = 8", __func__);
2426                             break;
2427         }
2428
2429         if (cflag & PARENB) {
2430                 if (cflag & PARODD) {
2431                         config->wFlags |= UMP_MASK_UART_FLAGS_PARITY;
2432                         config->bParity = UMP_UART_ODDPARITY;
2433                         dbg("%s - parity = odd", __func__);
2434                 } else {
2435                         config->wFlags |= UMP_MASK_UART_FLAGS_PARITY;
2436                         config->bParity = UMP_UART_EVENPARITY;
2437                         dbg("%s - parity = even", __func__);
2438                 }
2439         } else {
2440                 config->bParity = UMP_UART_NOPARITY;    
2441                 dbg("%s - parity = none", __func__);
2442         }
2443
2444         if (cflag & CSTOPB) {
2445                 config->bStopBits = UMP_UART_STOPBIT2;
2446                 dbg("%s - stop bits = 2", __func__);
2447         } else {
2448                 config->bStopBits = UMP_UART_STOPBIT1;
2449                 dbg("%s - stop bits = 1", __func__);
2450         }
2451
2452         /* figure out the flow control settings */
2453         if (cflag & CRTSCTS) {
2454                 config->wFlags |= UMP_MASK_UART_FLAGS_OUT_X_CTS_FLOW;
2455                 config->wFlags |= UMP_MASK_UART_FLAGS_RTS_FLOW;
2456                 dbg("%s - RTS/CTS is enabled", __func__);
2457         } else {
2458                 dbg("%s - RTS/CTS is disabled", __func__);
2459                 tty->hw_stopped = 0;
2460                 restart_read(edge_port);
2461         }
2462
2463         /* if we are implementing XON/XOFF, set the start and stop character in the device */
2464         if (I_IXOFF(tty) || I_IXON(tty)) {
2465                 config->cXon  = START_CHAR(tty);
2466                 config->cXoff = STOP_CHAR(tty);
2467
2468                 /* if we are implementing INBOUND XON/XOFF */
2469                 if (I_IXOFF(tty)) {
2470                         config->wFlags |= UMP_MASK_UART_FLAGS_IN_X;
2471                         dbg ("%s - INBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x",
2472                              __func__, config->cXon, config->cXoff);
2473                 } else {
2474                         dbg ("%s - INBOUND XON/XOFF is disabled", __func__);
2475                 }
2476
2477                 /* if we are implementing OUTBOUND XON/XOFF */
2478                 if (I_IXON(tty)) {
2479                         config->wFlags |= UMP_MASK_UART_FLAGS_OUT_X;
2480                         dbg ("%s - OUTBOUND XON/XOFF is enabled, XON = %2x, XOFF = %2x",
2481                              __func__, config->cXon, config->cXoff);
2482                 } else {
2483                         dbg ("%s - OUTBOUND XON/XOFF is disabled", __func__);
2484                 }
2485         }
2486
2487         tty->termios->c_cflag &= ~CMSPAR;
2488
2489         /* Round the baud rate */
2490         baud = tty_get_baud_rate(tty);
2491         if (!baud) {
2492                 /* pick a default, any default... */
2493                 baud = 9600;
2494         } else
2495                 tty_encode_baud_rate(tty, baud, baud);
2496
2497         edge_port->baud_rate = baud;
2498         config->wBaudRate = (__u16)((461550L + baud/2) / baud);
2499
2500         /* FIXME: Recompute actual baud from divisor here */
2501
2502         dbg ("%s - baud rate = %d, wBaudRate = %d", __func__, baud, config->wBaudRate);
2503
2504         dbg ("wBaudRate:   %d", (int)(461550L / config->wBaudRate));
2505         dbg ("wFlags:    0x%x", config->wFlags);
2506         dbg ("bDataBits:   %d", config->bDataBits);
2507         dbg ("bParity:     %d", config->bParity);
2508         dbg ("bStopBits:   %d", config->bStopBits);
2509         dbg ("cXon:        %d", config->cXon);
2510         dbg ("cXoff:       %d", config->cXoff);
2511         dbg ("bUartMode:   %d", config->bUartMode);
2512
2513         /* move the word values into big endian mode */
2514         cpu_to_be16s (&config->wFlags);
2515         cpu_to_be16s (&config->wBaudRate);
2516
2517         status = TIWriteCommandSync (edge_port->port->serial->dev,
2518                                 UMPC_SET_CONFIG,
2519                                 (__u8)(UMPM_UART1_PORT + port_number),
2520                                 0,
2521                                 (__u8 *)config,
2522                                 sizeof(*config));
2523         if (status) {
2524                 dbg ("%s - error %d when trying to write config to device",
2525                      __func__, status);
2526         }
2527
2528         kfree (config);
2529         
2530         return;
2531 }
2532
2533 static void edge_set_termios (struct usb_serial_port *port, struct ktermios *old_termios)
2534 {
2535         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2536         struct tty_struct *tty = port->tty;
2537         unsigned int cflag;
2538
2539         cflag = tty->termios->c_cflag;
2540
2541         dbg("%s - clfag %08x iflag %08x", __func__,
2542             tty->termios->c_cflag, tty->termios->c_iflag);
2543         dbg("%s - old clfag %08x old iflag %08x", __func__,
2544             old_termios->c_cflag, old_termios->c_iflag);
2545
2546         dbg("%s - port %d", __func__, port->number);
2547
2548         if (edge_port == NULL)
2549                 return;
2550
2551         /* change the port settings to the new ones specified */
2552         change_port_settings (edge_port, old_termios);
2553
2554         return;
2555 }
2556
2557 static int edge_tiocmset (struct usb_serial_port *port, struct file *file, unsigned int set, unsigned int clear)
2558 {
2559         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2560         unsigned int mcr;
2561         unsigned long flags;
2562
2563         dbg("%s - port %d", __func__, port->number);
2564
2565         spin_lock_irqsave(&edge_port->ep_lock, flags);
2566         mcr = edge_port->shadow_mcr;
2567         if (set & TIOCM_RTS)
2568                 mcr |= MCR_RTS;
2569         if (set & TIOCM_DTR)
2570                 mcr |= MCR_DTR;
2571         if (set & TIOCM_LOOP)
2572                 mcr |= MCR_LOOPBACK;
2573
2574         if (clear & TIOCM_RTS)
2575                 mcr &= ~MCR_RTS;
2576         if (clear & TIOCM_DTR)
2577                 mcr &= ~MCR_DTR;
2578         if (clear & TIOCM_LOOP)
2579                 mcr &= ~MCR_LOOPBACK;
2580
2581         edge_port->shadow_mcr = mcr;
2582         spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2583
2584         TIRestoreMCR (edge_port, mcr);
2585
2586         return 0;
2587 }
2588
2589 static int edge_tiocmget(struct usb_serial_port *port, struct file *file)
2590 {
2591         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2592         unsigned int result = 0;
2593         unsigned int msr;
2594         unsigned int mcr;
2595         unsigned long flags;
2596
2597         dbg("%s - port %d", __func__, port->number);
2598
2599         spin_lock_irqsave(&edge_port->ep_lock, flags);
2600
2601         msr = edge_port->shadow_msr;
2602         mcr = edge_port->shadow_mcr;
2603         result = ((mcr & MCR_DTR)       ? TIOCM_DTR: 0)   /* 0x002 */
2604                   | ((mcr & MCR_RTS)    ? TIOCM_RTS: 0)   /* 0x004 */
2605                   | ((msr & EDGEPORT_MSR_CTS)   ? TIOCM_CTS: 0)   /* 0x020 */
2606                   | ((msr & EDGEPORT_MSR_CD)    ? TIOCM_CAR: 0)   /* 0x040 */
2607                   | ((msr & EDGEPORT_MSR_RI)    ? TIOCM_RI:  0)   /* 0x080 */
2608                   | ((msr & EDGEPORT_MSR_DSR)   ? TIOCM_DSR: 0);  /* 0x100 */
2609
2610
2611         dbg("%s -- %x", __func__, result);
2612         spin_unlock_irqrestore(&edge_port->ep_lock, flags);
2613
2614         return result;
2615 }
2616
2617 static int get_serial_info (struct edgeport_port *edge_port, struct serial_struct __user *retinfo)
2618 {
2619         struct serial_struct tmp;
2620
2621         if (!retinfo)
2622                 return -EFAULT;
2623
2624         memset(&tmp, 0, sizeof(tmp));
2625
2626         tmp.type                = PORT_16550A;
2627         tmp.line                = edge_port->port->serial->minor;
2628         tmp.port                = edge_port->port->number;
2629         tmp.irq                 = 0;
2630         tmp.flags               = ASYNC_SKIP_TEST | ASYNC_AUTO_IRQ;
2631         tmp.xmit_fifo_size      = edge_port->port->bulk_out_size;
2632         tmp.baud_base           = 9600;
2633         tmp.close_delay         = 5*HZ;
2634         tmp.closing_wait        = closing_wait;
2635 //      tmp.custom_divisor      = state->custom_divisor;
2636 //      tmp.hub6                = state->hub6;
2637 //      tmp.io_type             = state->io_type;
2638
2639
2640         if (copy_to_user(retinfo, &tmp, sizeof(*retinfo)))
2641                 return -EFAULT;
2642         return 0;
2643 }
2644
2645 static int edge_ioctl (struct usb_serial_port *port, struct file *file, unsigned int cmd, unsigned long arg)
2646 {
2647         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2648         struct async_icount cnow;
2649         struct async_icount cprev;
2650
2651         dbg("%s - port %d, cmd = 0x%x", __func__, port->number, cmd);
2652
2653         switch (cmd) {
2654                 case TIOCINQ:
2655                         dbg("%s - (%d) TIOCINQ", __func__, port->number);
2656 //                      return get_number_bytes_avail(edge_port, (unsigned int *) arg);
2657                         break;
2658
2659                 case TIOCSERGETLSR:
2660                         dbg("%s - (%d) TIOCSERGETLSR", __func__, port->number);
2661 //                      return get_lsr_info(edge_port, (unsigned int *) arg);
2662                         break;
2663
2664                 case TIOCGSERIAL:
2665                         dbg("%s - (%d) TIOCGSERIAL", __func__, port->number);
2666                         return get_serial_info(edge_port, (struct serial_struct __user *) arg);
2667                         break;
2668
2669                 case TIOCSSERIAL:
2670                         dbg("%s - (%d) TIOCSSERIAL", __func__, port->number);
2671                         break;
2672
2673                 case TIOCMIWAIT:
2674                         dbg("%s - (%d) TIOCMIWAIT", __func__, port->number);
2675                         cprev = edge_port->icount;
2676                         while (1) {
2677                                 interruptible_sleep_on(&edge_port->delta_msr_wait);
2678                                 /* see if a signal did it */
2679                                 if (signal_pending(current))
2680                                         return -ERESTARTSYS;
2681                                 cnow = edge_port->icount;
2682                                 if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr &&
2683                                     cnow.dcd == cprev.dcd && cnow.cts == cprev.cts)
2684                                         return -EIO; /* no change => error */
2685                                 if (((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) ||
2686                                     ((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) ||
2687                                     ((arg & TIOCM_CD)  && (cnow.dcd != cprev.dcd)) ||
2688                                     ((arg & TIOCM_CTS) && (cnow.cts != cprev.cts)) ) {
2689                                         return 0;
2690                                 }
2691                                 cprev = cnow;
2692                         }
2693                         /* not reached */
2694                         break;
2695
2696                 case TIOCGICOUNT:
2697                         dbg ("%s - (%d) TIOCGICOUNT RX=%d, TX=%d", __func__,
2698                              port->number, edge_port->icount.rx, edge_port->icount.tx);
2699                         if (copy_to_user((void __user *)arg, &edge_port->icount, sizeof(edge_port->icount)))
2700                                 return -EFAULT;
2701                         return 0;
2702         }
2703
2704         return -ENOIOCTLCMD;
2705 }
2706
2707 static void edge_break (struct usb_serial_port *port, int break_state)
2708 {
2709         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2710         int status;
2711
2712         dbg ("%s - state = %d", __func__, break_state);
2713
2714         /* chase the port close */
2715         TIChasePort (edge_port, 0, 0);
2716
2717         if (break_state == -1) {
2718                 status = TISetBreak (edge_port);
2719         } else {
2720                 status = TIClearBreak (edge_port);
2721         }
2722         if (status) {
2723                 dbg ("%s - error %d sending break set/clear command.",
2724                      __func__, status);
2725         }
2726 }
2727
2728 static int edge_startup (struct usb_serial *serial)
2729 {
2730         struct edgeport_serial *edge_serial;
2731         struct edgeport_port *edge_port;
2732         struct usb_device *dev;
2733         int status;
2734         int i;
2735
2736         dev = serial->dev;
2737
2738         /* create our private serial structure */
2739         edge_serial = kzalloc(sizeof(struct edgeport_serial), GFP_KERNEL);
2740         if (edge_serial == NULL) {
2741                 dev_err(&serial->dev->dev, "%s - Out of memory\n", __func__);
2742                 return -ENOMEM;
2743         }
2744         mutex_init(&edge_serial->es_lock);
2745         edge_serial->serial = serial;
2746         usb_set_serial_data(serial, edge_serial);
2747
2748         status = TIDownloadFirmware (edge_serial);
2749         if (status) {
2750                 kfree (edge_serial);
2751                 return status;
2752         }
2753
2754         /* set up our port private structures */
2755         for (i = 0; i < serial->num_ports; ++i) {
2756                 edge_port = kzalloc(sizeof(struct edgeport_port), GFP_KERNEL);
2757                 if (edge_port == NULL) {
2758                         dev_err(&serial->dev->dev, "%s - Out of memory\n", __func__);
2759                         goto cleanup;
2760                 }
2761                 spin_lock_init(&edge_port->ep_lock);
2762                 edge_port->ep_out_buf = edge_buf_alloc(EDGE_OUT_BUF_SIZE);
2763                 if (edge_port->ep_out_buf == NULL) {
2764                         dev_err(&serial->dev->dev, "%s - Out of memory\n", __func__);
2765                         kfree(edge_port);
2766                         goto cleanup;
2767                 }
2768                 edge_port->port = serial->port[i];
2769                 edge_port->edge_serial = edge_serial;
2770                 usb_set_serial_port_data(serial->port[i], edge_port);
2771                 edge_port->bUartMode = default_uart_mode;
2772         }
2773         
2774         return 0;
2775
2776 cleanup:
2777         for (--i; i>=0; --i) {
2778                 edge_port = usb_get_serial_port_data(serial->port[i]);
2779                 edge_buf_free(edge_port->ep_out_buf);
2780                 kfree(edge_port);
2781                 usb_set_serial_port_data(serial->port[i], NULL);
2782         }
2783         kfree (edge_serial);
2784         usb_set_serial_data(serial, NULL);
2785         return -ENOMEM;
2786 }
2787
2788 static void edge_shutdown (struct usb_serial *serial)
2789 {
2790         int i;
2791         struct edgeport_port *edge_port;
2792
2793         dbg ("%s", __func__);
2794
2795         for (i = 0; i < serial->num_ports; ++i) {
2796                 edge_port = usb_get_serial_port_data(serial->port[i]);
2797                 edge_remove_sysfs_attrs(edge_port->port);
2798                 edge_buf_free(edge_port->ep_out_buf);
2799                 kfree(edge_port);
2800                 usb_set_serial_port_data(serial->port[i], NULL);
2801         }
2802         kfree(usb_get_serial_data(serial));
2803         usb_set_serial_data(serial, NULL);
2804 }
2805
2806
2807 /* Sysfs Attributes */
2808
2809 static ssize_t show_uart_mode(struct device *dev,
2810         struct device_attribute *attr, char *buf)
2811 {
2812         struct usb_serial_port *port = to_usb_serial_port(dev);
2813         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2814
2815         return sprintf(buf, "%d\n", edge_port->bUartMode);
2816 }
2817
2818 static ssize_t store_uart_mode(struct device *dev,
2819         struct device_attribute *attr, const char *valbuf, size_t count)
2820 {
2821         struct usb_serial_port *port = to_usb_serial_port(dev);
2822         struct edgeport_port *edge_port = usb_get_serial_port_data(port);
2823         unsigned int v = simple_strtoul(valbuf, NULL, 0);
2824
2825         dbg("%s: setting uart_mode = %d", __func__, v);
2826
2827         if (v < 256)
2828                 edge_port->bUartMode = v;
2829         else
2830                 dev_err(dev, "%s - uart_mode %d is invalid\n", __func__, v);
2831
2832         return count;
2833 }
2834
2835 static DEVICE_ATTR(uart_mode, S_IWUSR | S_IRUGO, show_uart_mode, store_uart_mode);
2836
2837 static int edge_create_sysfs_attrs(struct usb_serial_port *port)
2838 {
2839         return device_create_file(&port->dev, &dev_attr_uart_mode);
2840 }
2841
2842 static int edge_remove_sysfs_attrs(struct usb_serial_port *port)
2843 {
2844         device_remove_file(&port->dev, &dev_attr_uart_mode);
2845         return 0;
2846 }
2847
2848
2849 /* Circular Buffer */
2850
2851 /*
2852  * edge_buf_alloc
2853  *
2854  * Allocate a circular buffer and all associated memory.
2855  */
2856
2857 static struct edge_buf *edge_buf_alloc(unsigned int size)
2858 {
2859         struct edge_buf *eb;
2860
2861
2862         if (size == 0)
2863                 return NULL;
2864
2865         eb = kmalloc(sizeof(struct edge_buf), GFP_KERNEL);
2866         if (eb == NULL)
2867                 return NULL;
2868
2869         eb->buf_buf = kmalloc(size, GFP_KERNEL);
2870         if (eb->buf_buf == NULL) {
2871                 kfree(eb);
2872                 return NULL;
2873         }
2874
2875         eb->buf_size = size;
2876         eb->buf_get = eb->buf_put = eb->buf_buf;
2877
2878         return eb;
2879 }
2880
2881
2882 /*
2883  * edge_buf_free
2884  *
2885  * Free the buffer and all associated memory.
2886  */
2887
2888 static void edge_buf_free(struct edge_buf *eb)
2889 {
2890         if (eb) {
2891                 kfree(eb->buf_buf);
2892                 kfree(eb);
2893         }
2894 }
2895
2896
2897 /*
2898  * edge_buf_clear
2899  *
2900  * Clear out all data in the circular buffer.
2901  */
2902
2903 static void edge_buf_clear(struct edge_buf *eb)
2904 {
2905         if (eb != NULL)
2906                 eb->buf_get = eb->buf_put;
2907                 /* equivalent to a get of all data available */
2908 }
2909
2910
2911 /*
2912  * edge_buf_data_avail
2913  *
2914  * Return the number of bytes of data available in the circular
2915  * buffer.
2916  */
2917
2918 static unsigned int edge_buf_data_avail(struct edge_buf *eb)
2919 {
2920         if (eb != NULL)
2921                 return ((eb->buf_size + eb->buf_put - eb->buf_get) % eb->buf_size);
2922         else
2923                 return 0;
2924 }
2925
2926
2927 /*
2928  * edge_buf_space_avail
2929  *
2930  * Return the number of bytes of space available in the circular
2931  * buffer.
2932  */
2933
2934 static unsigned int edge_buf_space_avail(struct edge_buf *eb)
2935 {
2936         if (eb != NULL)
2937                 return ((eb->buf_size + eb->buf_get - eb->buf_put - 1) % eb->buf_size);
2938         else
2939                 return 0;
2940 }
2941
2942
2943 /*
2944  * edge_buf_put
2945  *
2946  * Copy data data from a user buffer and put it into the circular buffer.
2947  * Restrict to the amount of space available.
2948  *
2949  * Return the number of bytes copied.
2950  */
2951
2952 static unsigned int edge_buf_put(struct edge_buf *eb, const char *buf,
2953         unsigned int count)
2954 {
2955         unsigned int len;
2956
2957
2958         if (eb == NULL)
2959                 return 0;
2960
2961         len  = edge_buf_space_avail(eb);
2962         if (count > len)
2963                 count = len;
2964
2965         if (count == 0)
2966                 return 0;
2967
2968         len = eb->buf_buf + eb->buf_size - eb->buf_put;
2969         if (count > len) {
2970                 memcpy(eb->buf_put, buf, len);
2971                 memcpy(eb->buf_buf, buf+len, count - len);
2972                 eb->buf_put = eb->buf_buf + count - len;
2973         } else {
2974                 memcpy(eb->buf_put, buf, count);
2975                 if (count < len)
2976                         eb->buf_put += count;
2977                 else /* count == len */
2978                         eb->buf_put = eb->buf_buf;
2979         }
2980
2981         return count;
2982 }
2983
2984
2985 /*
2986  * edge_buf_get
2987  *
2988  * Get data from the circular buffer and copy to the given buffer.
2989  * Restrict to the amount of data available.
2990  *
2991  * Return the number of bytes copied.
2992  */
2993
2994 static unsigned int edge_buf_get(struct edge_buf *eb, char *buf,
2995         unsigned int count)
2996 {
2997         unsigned int len;
2998
2999
3000         if (eb == NULL)
3001                 return 0;
3002
3003         len = edge_buf_data_avail(eb);
3004         if (count > len)
3005                 count = len;
3006
3007         if (count == 0)
3008                 return 0;
3009
3010         len = eb->buf_buf + eb->buf_size - eb->buf_get;
3011         if (count > len) {
3012                 memcpy(buf, eb->buf_get, len);
3013                 memcpy(buf+len, eb->buf_buf, count - len);
3014                 eb->buf_get = eb->buf_buf + count - len;
3015         } else {
3016                 memcpy(buf, eb->buf_get, count);
3017                 if (count < len)
3018                         eb->buf_get += count;
3019                 else /* count == len */
3020                         eb->buf_get = eb->buf_buf;
3021         }
3022
3023         return count;
3024 }
3025
3026
3027 static struct usb_serial_driver edgeport_1port_device = {
3028         .driver = {
3029                 .owner          = THIS_MODULE,
3030                 .name           = "edgeport_ti_1",
3031         },
3032         .description            = "Edgeport TI 1 port adapter",
3033         .usb_driver             = &io_driver,
3034         .id_table               = edgeport_1port_id_table,
3035         .num_ports              = 1,
3036         .open                   = edge_open,
3037         .close                  = edge_close,
3038         .throttle               = edge_throttle,
3039         .unthrottle             = edge_unthrottle,
3040         .attach                 = edge_startup,
3041         .shutdown               = edge_shutdown,
3042         .port_probe             = edge_create_sysfs_attrs,
3043         .ioctl                  = edge_ioctl,
3044         .set_termios            = edge_set_termios,
3045         .tiocmget               = edge_tiocmget,
3046         .tiocmset               = edge_tiocmset,
3047         .write                  = edge_write,
3048         .write_room             = edge_write_room,
3049         .chars_in_buffer        = edge_chars_in_buffer,
3050         .break_ctl              = edge_break,
3051         .read_int_callback      = edge_interrupt_callback,
3052         .read_bulk_callback     = edge_bulk_in_callback,
3053         .write_bulk_callback    = edge_bulk_out_callback,
3054 };
3055
3056 static struct usb_serial_driver edgeport_2port_device = {
3057         .driver = {
3058                 .owner          = THIS_MODULE,
3059                 .name           = "edgeport_ti_2",
3060         },
3061         .description            = "Edgeport TI 2 port adapter",
3062         .usb_driver             = &io_driver,
3063         .id_table               = edgeport_2port_id_table,
3064         .num_ports              = 2,
3065         .open                   = edge_open,
3066         .close                  = edge_close,
3067         .throttle               = edge_throttle,
3068         .unthrottle             = edge_unthrottle,
3069         .attach                 = edge_startup,
3070         .shutdown               = edge_shutdown,
3071         .port_probe             = edge_create_sysfs_attrs,
3072         .ioctl                  = edge_ioctl,
3073         .set_termios            = edge_set_termios,
3074         .tiocmget               = edge_tiocmget,
3075         .tiocmset               = edge_tiocmset,
3076         .write                  = edge_write,
3077         .write_room             = edge_write_room,
3078         .chars_in_buffer        = edge_chars_in_buffer,
3079         .break_ctl              = edge_break,
3080         .read_int_callback      = edge_interrupt_callback,
3081         .read_bulk_callback     = edge_bulk_in_callback,
3082         .write_bulk_callback    = edge_bulk_out_callback,
3083 };
3084
3085
3086 static int __init edgeport_init(void)
3087 {
3088         int retval;
3089         retval = usb_serial_register(&edgeport_1port_device);
3090         if (retval)
3091                 goto failed_1port_device_register;
3092         retval = usb_serial_register(&edgeport_2port_device);
3093         if (retval)
3094                 goto failed_2port_device_register;
3095         retval = usb_register(&io_driver);
3096         if (retval) 
3097                 goto failed_usb_register;
3098         info(DRIVER_DESC " " DRIVER_VERSION);
3099         return 0;
3100 failed_usb_register:
3101         usb_serial_deregister(&edgeport_2port_device);
3102 failed_2port_device_register:
3103         usb_serial_deregister(&edgeport_1port_device);
3104 failed_1port_device_register:
3105         return retval;
3106 }
3107
3108 static void __exit edgeport_exit (void)
3109 {
3110         usb_deregister (&io_driver);
3111         usb_serial_deregister (&edgeport_1port_device);
3112         usb_serial_deregister (&edgeport_2port_device);
3113 }
3114
3115 module_init(edgeport_init);
3116 module_exit(edgeport_exit);
3117
3118 /* Module information */
3119 MODULE_AUTHOR(DRIVER_AUTHOR);
3120 MODULE_DESCRIPTION(DRIVER_DESC);
3121 MODULE_LICENSE("GPL");
3122
3123 module_param(debug, bool, S_IRUGO | S_IWUSR);
3124 MODULE_PARM_DESC(debug, "Debug enabled or not");
3125
3126 module_param(low_latency, bool, S_IRUGO | S_IWUSR);
3127 MODULE_PARM_DESC(low_latency, "Low latency enabled or not");
3128
3129 module_param(closing_wait, int, S_IRUGO | S_IWUSR);
3130 MODULE_PARM_DESC(closing_wait, "Maximum wait for data to drain, in .01 secs");
3131
3132 module_param(ignore_cpu_rev, bool, S_IRUGO | S_IWUSR);
3133 MODULE_PARM_DESC(ignore_cpu_rev, "Ignore the cpu revision when connecting to a device");
3134
3135 module_param(default_uart_mode, int, S_IRUGO | S_IWUSR);
3136 MODULE_PARM_DESC(default_uart_mode, "Default uart_mode, 0=RS232, ...");
3137