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path: root/drivers/media/dvb/b2c2/flexcop-usb.c
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Diffstat (limited to 'drivers/media/dvb/b2c2/flexcop-usb.c')
-rw-r--r--drivers/media/dvb/b2c2/flexcop-usb.c530
1 files changed, 530 insertions, 0 deletions
diff --git a/drivers/media/dvb/b2c2/flexcop-usb.c b/drivers/media/dvb/b2c2/flexcop-usb.c
new file mode 100644
index 000000000000..5fa68febf3a6
--- /dev/null
+++ b/drivers/media/dvb/b2c2/flexcop-usb.c
@@ -0,0 +1,530 @@
1/*
2 * This file is part of linux driver the digital TV devices equipped with B2C2 FlexcopII(b)/III
3 *
4 * flexcop-usb.c - covers the USB part.
5 *
6 * see flexcop.c for copyright information.
7 */
8
9#define FC_LOG_PREFIX "flexcop_usb"
10#include "flexcop-usb.h"
11#include "flexcop-common.h"
12
13/* Version information */
14#define DRIVER_VERSION "0.1"
15#define DRIVER_NAME "Technisat/B2C2 FlexCop II/IIb/III Digital TV USB Driver"
16#define DRIVER_AUTHOR "Patrick Boettcher <patrick.boettcher@desy.de>"
17
18/* debug */
19#ifdef CONFIG_DVB_B2C2_FLEXCOP_DEBUG
20#define dprintk(level,args...) \
21 do { if ((debug & level)) { printk(args); } } while (0)
22#define debug_dump(b,l,method) {\
23 int i; \
24 for (i = 0; i < l; i++) method("%02x ", b[i]); \
25 method("\n");\
26}
27
28#define DEBSTATUS ""
29#else
30#define dprintk(level,args...)
31#define debug_dump(b,l,method)
32#define DEBSTATUS " (debugging is not enabled)"
33#endif
34
35static int debug;
36module_param(debug, int, 0644);
37MODULE_PARM_DESC(debug, "set debugging level (1=info,ts=2,ctrl=4,i2c=8,v8mem=16 (or-able))." DEBSTATUS);
38#undef DEBSTATUS
39
40#define deb_info(args...) dprintk(0x01,args)
41#define deb_ts(args...) dprintk(0x02,args)
42#define deb_ctrl(args...) dprintk(0x04,args)
43#define deb_i2c(args...) dprintk(0x08,args)
44#define deb_v8(args...) dprintk(0x10,args)
45
46/* JLP 111700: we will include the 1 bit gap between the upper and lower 3 bits
47 * in the IBI address, to make the V8 code simpler.
48 * PCI ADDRESS FORMAT: 0x71C -> 0000 0111 0001 1100 (these are the six bits used)
49 * in general: 0000 0HHH 000L LL00
50 * IBI ADDRESS FORMAT: RHHH BLLL
51 *
52 * where R is the read(1)/write(0) bit, B is the busy bit
53 * and HHH and LLL are the two sets of three bits from the PCI address.
54 */
55#define B2C2_FLEX_PCIOFFSET_TO_INTERNALADDR(usPCI) (u8) (((usPCI >> 2) & 0x07) + ((usPCI >> 4) & 0x70))
56#define B2C2_FLEX_INTERNALADDR_TO_PCIOFFSET(ucAddr) (u16) (((ucAddr & 0x07) << 2) + ((ucAddr & 0x70) << 4))
57
58/*
59 * DKT 020228
60 * - forget about this VENDOR_BUFFER_SIZE, read and write register
61 * deal with DWORD or 4 bytes, that should be should from now on
62 * - from now on, we don't support anything older than firm 1.00
63 * I eliminated the write register as a 2 trip of writing hi word and lo word
64 * and force this to write only 4 bytes at a time.
65 * NOTE: this should work with all the firmware from 1.00 and newer
66 */
67static int flexcop_usb_readwrite_dw(struct flexcop_device *fc, u16 wRegOffsPCI, u32 *val, u8 read)
68{
69 struct flexcop_usb *fc_usb = fc->bus_specific;
70 u8 request = read ? B2C2_USB_READ_REG : B2C2_USB_WRITE_REG;
71 u8 request_type = (read ? USB_DIR_IN : USB_DIR_OUT) | USB_TYPE_VENDOR;
72 u8 wAddress = B2C2_FLEX_PCIOFFSET_TO_INTERNALADDR(wRegOffsPCI) | (read ? 0x80 : 0);
73
74 int len = usb_control_msg(fc_usb->udev,
75 read ? B2C2_USB_CTRL_PIPE_IN : B2C2_USB_CTRL_PIPE_OUT,
76 request,
77 request_type, /* 0xc0 read or 0x40 write*/
78 wAddress,
79 0,
80 val,
81 sizeof(u32),
82 B2C2_WAIT_FOR_OPERATION_RDW * HZ);
83
84 if (len != sizeof(u32)) {
85 err("error while %s dword from %d (%d).",read ? "reading" : "writing",
86 wAddress,wRegOffsPCI);
87 return -EIO;
88 }
89 return 0;
90}
91
92/*
93 * DKT 010817 - add support for V8 memory read/write and flash update
94 */
95static int flexcop_usb_v8_memory_req(struct flexcop_usb *fc_usb,
96 flexcop_usb_request_t req, u8 page, u16 wAddress,
97 u8 *pbBuffer,u32 buflen)
98{
99// u8 dwRequestType;
100 u8 request_type = USB_TYPE_VENDOR;
101 u16 wIndex;
102 int nWaitTime,pipe,len;
103
104 wIndex = page << 8;
105
106 switch (req) {
107 case B2C2_USB_READ_V8_MEM:
108 nWaitTime = B2C2_WAIT_FOR_OPERATION_V8READ;
109 request_type |= USB_DIR_IN;
110// dwRequestType = (u8) RTYPE_READ_V8_MEMORY;
111 pipe = B2C2_USB_CTRL_PIPE_IN;
112 break;
113 case B2C2_USB_WRITE_V8_MEM:
114 wIndex |= pbBuffer[0];
115 request_type |= USB_DIR_OUT;
116 nWaitTime = B2C2_WAIT_FOR_OPERATION_V8WRITE;
117// dwRequestType = (u8) RTYPE_WRITE_V8_MEMORY;
118 pipe = B2C2_USB_CTRL_PIPE_OUT;
119 break;
120 case B2C2_USB_FLASH_BLOCK:
121 request_type |= USB_DIR_OUT;
122 nWaitTime = B2C2_WAIT_FOR_OPERATION_V8FLASH;
123// dwRequestType = (u8) RTYPE_WRITE_V8_FLASH;
124 pipe = B2C2_USB_CTRL_PIPE_OUT;
125 break;
126 default:
127 deb_info("unsupported request for v8_mem_req %x.\n",req);
128 return -EINVAL;
129 }
130 deb_v8("v8mem: %02x %02x %04x %04x, len: %d\n",request_type,req,
131 wAddress,wIndex,buflen);
132
133 len = usb_control_msg(fc_usb->udev,pipe,
134 req,
135 request_type,
136 wAddress,
137 wIndex,
138 pbBuffer,
139 buflen,
140 nWaitTime * HZ);
141
142 debug_dump(pbBuffer,len,deb_v8);
143
144 return len == buflen ? 0 : -EIO;
145}
146
147#define bytes_left_to_read_on_page(paddr,buflen) \
148 ((V8_MEMORY_PAGE_SIZE - (paddr & V8_MEMORY_PAGE_MASK)) > buflen \
149 ? buflen : (V8_MEMORY_PAGE_SIZE - (paddr & V8_MEMORY_PAGE_MASK)))
150
151static int flexcop_usb_memory_req(struct flexcop_usb *fc_usb,flexcop_usb_request_t req,
152 flexcop_usb_mem_page_t page_start, u32 addr, int extended, u8 *buf, u32 len)
153{
154 int i,ret = 0;
155 u16 wMax;
156 u32 pagechunk = 0;
157
158 switch(req) {
159 case B2C2_USB_READ_V8_MEM: wMax = USB_MEM_READ_MAX; break;
160 case B2C2_USB_WRITE_V8_MEM: wMax = USB_MEM_WRITE_MAX; break;
161 case B2C2_USB_FLASH_BLOCK: wMax = USB_FLASH_MAX; break;
162 default:
163 return -EINVAL;
164 break;
165 }
166 for (i = 0; i < len;) {
167 pagechunk = wMax < bytes_left_to_read_on_page(addr,len) ? wMax : bytes_left_to_read_on_page(addr,len);
168 deb_info("%x\n",(addr & V8_MEMORY_PAGE_MASK) | (V8_MEMORY_EXTENDED*extended));
169 if ((ret = flexcop_usb_v8_memory_req(fc_usb,req,
170 page_start + (addr / V8_MEMORY_PAGE_SIZE), /* actual page */
171 (addr & V8_MEMORY_PAGE_MASK) | (V8_MEMORY_EXTENDED*extended),
172 &buf[i],pagechunk)) < 0)
173 return ret;
174
175 addr += pagechunk;
176 len -= pagechunk;
177 }
178 return 0;
179}
180
181static int flexcop_usb_get_mac_addr(struct flexcop_device *fc, int extended)
182{
183 return flexcop_usb_memory_req(fc->bus_specific,B2C2_USB_READ_V8_MEM,V8_MEMORY_PAGE_FLASH,0x1f010,1,fc->mac_address,6);
184}
185
186#if 0
187static int flexcop_usb_utility_req(struct flexcop_usb *fc_usb, int set,
188 flexcop_usb_utility_function_t func, u8 extra, u16 wIndex,
189 u16 buflen, u8 *pvBuffer)
190{
191 u16 wValue;
192 u8 request_type = (set ? USB_DIR_OUT : USB_DIR_IN) | USB_TYPE_VENDOR;
193// u8 dwRequestType = (u8) RTYPE_GENERIC,
194 int nWaitTime = 2,
195 pipe = set ? B2C2_USB_CTRL_PIPE_OUT : B2C2_USB_CTRL_PIPE_IN,
196 len;
197
198 wValue = (func << 8) | extra;
199
200 len = usb_control_msg(fc_usb->udev,pipe,
201 B2C2_USB_UTILITY,
202 request_type,
203 wValue,
204 wIndex,
205 pvBuffer,
206 buflen,
207 nWaitTime * HZ);
208 return len == buflen ? 0 : -EIO;
209}
210#endif
211
212/* usb i2c stuff */
213static int flexcop_usb_i2c_req(struct flexcop_usb *fc_usb,
214 flexcop_usb_request_t req, flexcop_usb_i2c_function_t func,
215 flexcop_i2c_port_t port, u8 chipaddr, u8 addr, u8 *buf, u8 buflen)
216{
217 u16 wValue, wIndex;
218 int nWaitTime,pipe,len;
219// u8 dwRequestType;
220 u8 request_type = USB_TYPE_VENDOR;
221
222 switch (func) {
223 case USB_FUNC_I2C_WRITE:
224 case USB_FUNC_I2C_MULTIWRITE:
225 case USB_FUNC_I2C_REPEATWRITE:
226 /* DKT 020208 - add this to support special case of DiSEqC */
227 case USB_FUNC_I2C_CHECKWRITE:
228 pipe = B2C2_USB_CTRL_PIPE_OUT;
229 nWaitTime = 2;
230// dwRequestType = (u8) RTYPE_GENERIC;
231 request_type |= USB_DIR_OUT;
232 break;
233 case USB_FUNC_I2C_READ:
234 case USB_FUNC_I2C_REPEATREAD:
235 pipe = B2C2_USB_CTRL_PIPE_IN;
236 nWaitTime = 2;
237// dwRequestType = (u8) RTYPE_GENERIC;
238 request_type |= USB_DIR_IN;
239 break;
240 default:
241 deb_info("unsupported function for i2c_req %x\n",func);
242 return -EINVAL;
243 }
244 wValue = (func << 8 ) | (port << 4);
245 wIndex = (chipaddr << 8 ) | addr;
246
247 deb_i2c("i2c %2d: %02x %02x %02x %02x %02x %02x\n",func,request_type,req,
248 ((wValue && 0xff) << 8),wValue >> 8,((wIndex && 0xff) << 8),wIndex >> 8);
249
250 len = usb_control_msg(fc_usb->udev,pipe,
251 req,
252 request_type,
253 wValue,
254 wIndex,
255 buf,
256 buflen,
257 nWaitTime * HZ);
258
259 return len == buflen ? 0 : -EREMOTEIO;
260}
261
262/* actual bus specific access functions, make sure prototype are/will be equal to pci */
263static flexcop_ibi_value flexcop_usb_read_ibi_reg(struct flexcop_device *fc, flexcop_ibi_register reg)
264{
265 flexcop_ibi_value val;
266 val.raw = 0;
267 flexcop_usb_readwrite_dw(fc,reg, &val.raw, 1);
268 return val;
269}
270
271static int flexcop_usb_write_ibi_reg(struct flexcop_device *fc, flexcop_ibi_register reg, flexcop_ibi_value val)
272{
273 return flexcop_usb_readwrite_dw(fc,reg, &val.raw, 0);
274}
275
276static int flexcop_usb_i2c_request(struct flexcop_device *fc, flexcop_access_op_t op,
277 flexcop_i2c_port_t port, u8 chipaddr, u8 addr, u8 *buf, u16 len)
278{
279 if (op == FC_READ)
280 return flexcop_usb_i2c_req(fc->bus_specific,B2C2_USB_I2C_REQUEST,USB_FUNC_I2C_READ,port,chipaddr,addr,buf,len);
281 else
282 return flexcop_usb_i2c_req(fc->bus_specific,B2C2_USB_I2C_REQUEST,USB_FUNC_I2C_WRITE,port,chipaddr,addr,buf,len);
283}
284
285static void flexcop_usb_urb_complete(struct urb *urb, struct pt_regs *ptregs)
286{
287 struct flexcop_usb *fc_usb = urb->context;
288 int i;
289
290 if (urb->actual_length > 0)
291 deb_ts("urb completed, bufsize: %d actlen; %d\n",urb->transfer_buffer_length, urb->actual_length);
292
293 for (i = 0; i < urb->number_of_packets; i++) {
294 if (urb->iso_frame_desc[i].status < 0) {
295 err("iso frame descriptor %d has an error: %d\n",i,urb->iso_frame_desc[i].status);
296 } else
297 if (urb->iso_frame_desc[i].actual_length > 0) {
298 deb_ts("passed %d bytes to the demux\n",urb->iso_frame_desc[i].actual_length);
299
300 flexcop_pass_dmx_data(fc_usb->fc_dev,
301 urb->transfer_buffer + urb->iso_frame_desc[i].offset,
302 urb->iso_frame_desc[i].actual_length);
303 }
304 urb->iso_frame_desc[i].status = 0;
305 urb->iso_frame_desc[i].actual_length = 0;
306 }
307
308 usb_submit_urb(urb,GFP_ATOMIC);
309}
310
311static int flexcop_usb_stream_control(struct flexcop_device *fc, int onoff)
312{
313 /* submit/kill iso packets */
314 return 0;
315}
316
317static void flexcop_usb_transfer_exit(struct flexcop_usb *fc_usb)
318{
319 int i;
320 for (i = 0; i < B2C2_USB_NUM_ISO_URB; i++)
321 if (fc_usb->iso_urb[i] != NULL) {
322 deb_ts("unlinking/killing urb no. %d\n",i);
323 usb_kill_urb(fc_usb->iso_urb[i]);
324 usb_free_urb(fc_usb->iso_urb[i]);
325 }
326
327 if (fc_usb->iso_buffer != NULL)
328 pci_free_consistent(NULL,fc_usb->buffer_size, fc_usb->iso_buffer, fc_usb->dma_addr);
329}
330
331static int flexcop_usb_transfer_init(struct flexcop_usb *fc_usb)
332{
333 u16 frame_size = fc_usb->uintf->cur_altsetting->endpoint[0].desc.wMaxPacketSize;
334 int bufsize = B2C2_USB_NUM_ISO_URB * B2C2_USB_FRAMES_PER_ISO * frame_size,i,j,ret;
335 int buffer_offset = 0;
336
337 deb_ts("creating %d iso-urbs with %d frames each of %d bytes size = %d.\n",
338 B2C2_USB_NUM_ISO_URB, B2C2_USB_FRAMES_PER_ISO, frame_size,bufsize);
339
340 fc_usb->iso_buffer = pci_alloc_consistent(NULL,bufsize,&fc_usb->dma_addr);
341 if (fc_usb->iso_buffer == NULL)
342 return -ENOMEM;
343 memset(fc_usb->iso_buffer, 0, bufsize);
344 fc_usb->buffer_size = bufsize;
345
346 /* creating iso urbs */
347 for (i = 0; i < B2C2_USB_NUM_ISO_URB; i++)
348 if (!(fc_usb->iso_urb[i] = usb_alloc_urb(B2C2_USB_FRAMES_PER_ISO,GFP_ATOMIC))) {
349 ret = -ENOMEM;
350 goto urb_error;
351 }
352 /* initialising and submitting iso urbs */
353 for (i = 0; i < B2C2_USB_NUM_ISO_URB; i++) {
354 int frame_offset = 0;
355 struct urb *urb = fc_usb->iso_urb[i];
356 deb_ts("initializing and submitting urb no. %d (buf_offset: %d).\n",i,buffer_offset);
357
358 urb->dev = fc_usb->udev;
359 urb->context = fc_usb;
360 urb->complete = flexcop_usb_urb_complete;
361 urb->pipe = B2C2_USB_DATA_PIPE;
362 urb->transfer_flags = URB_ISO_ASAP;
363 urb->interval = 1;
364 urb->number_of_packets = B2C2_USB_FRAMES_PER_ISO;
365 urb->transfer_buffer_length = frame_size * B2C2_USB_FRAMES_PER_ISO;
366 urb->transfer_buffer = fc_usb->iso_buffer + buffer_offset;
367
368 buffer_offset += frame_size * B2C2_USB_FRAMES_PER_ISO;
369 for (j = 0; j < B2C2_USB_FRAMES_PER_ISO; j++) {
370 deb_ts("urb no: %d, frame: %d, frame_offset: %d\n",i,j,frame_offset);
371 urb->iso_frame_desc[j].offset = frame_offset;
372 urb->iso_frame_desc[j].length = frame_size;
373 frame_offset += frame_size;
374 }
375
376 if ((ret = usb_submit_urb(fc_usb->iso_urb[i],GFP_ATOMIC))) {
377 err("submitting urb %d failed with %d.",i,ret);
378 goto urb_error;
379 }
380 deb_ts("submitted urb no. %d.\n",i);
381 }
382
383/* SRAM */
384
385 flexcop_sram_set_dest(fc_usb->fc_dev,FC_SRAM_DEST_MEDIA | FC_SRAM_DEST_NET |
386 FC_SRAM_DEST_CAO | FC_SRAM_DEST_CAI, FC_SRAM_DEST_TARGET_WAN_USB);
387 flexcop_wan_set_speed(fc_usb->fc_dev,FC_WAN_SPEED_8MBITS);
388 flexcop_sram_ctrl(fc_usb->fc_dev,1,1,1);
389
390 ret = 0;
391 goto success;
392urb_error:
393 flexcop_usb_transfer_exit(fc_usb);
394success:
395 return ret;
396}
397
398static int flexcop_usb_init(struct flexcop_usb *fc_usb)
399{
400 /* use the alternate setting with the larges buffer */
401 usb_set_interface(fc_usb->udev,0,1);
402 switch (fc_usb->udev->speed) {
403 case USB_SPEED_LOW:
404 err("cannot handle USB speed because it is to sLOW.");
405 return -ENODEV;
406 break;
407 case USB_SPEED_FULL:
408 info("running at FULL speed.");
409 break;
410 case USB_SPEED_HIGH:
411 info("running at HIGH speed.");
412 break;
413 case USB_SPEED_UNKNOWN: /* fall through */
414 default:
415 err("cannot handle USB speed because it is unkown.");
416 return -ENODEV;
417 }
418 usb_set_intfdata(fc_usb->uintf, fc_usb);
419 return 0;
420}
421
422static void flexcop_usb_exit(struct flexcop_usb *fc_usb)
423{
424 usb_set_intfdata(fc_usb->uintf, NULL);
425}
426
427static int flexcop_usb_probe(struct usb_interface *intf,
428 const struct usb_device_id *id)
429{
430 struct usb_device *udev = interface_to_usbdev(intf);
431 struct flexcop_usb *fc_usb = NULL;
432 struct flexcop_device *fc = NULL;
433 int ret;
434
435 if ((fc = flexcop_device_kmalloc(sizeof(struct flexcop_usb))) == NULL) {
436 err("out of memory\n");
437 return -ENOMEM;
438 }
439
440/* general flexcop init */
441 fc_usb = fc->bus_specific;
442 fc_usb->fc_dev = fc;
443
444 fc->read_ibi_reg = flexcop_usb_read_ibi_reg;
445 fc->write_ibi_reg = flexcop_usb_write_ibi_reg;
446 fc->i2c_request = flexcop_usb_i2c_request;
447 fc->get_mac_addr = flexcop_usb_get_mac_addr;
448
449 fc->stream_control = flexcop_usb_stream_control;
450
451 fc->pid_filtering = 1;
452 fc->bus_type = FC_USB;
453
454 fc->dev = &udev->dev;
455
456/* bus specific part */
457 fc_usb->udev = udev;
458 fc_usb->uintf = intf;
459 if ((ret = flexcop_usb_init(fc_usb)) != 0)
460 goto err_kfree;
461
462/* init flexcop */
463 if ((ret = flexcop_device_initialize(fc)) != 0)
464 goto err_usb_exit;
465
466/* xfer init */
467 if ((ret = flexcop_usb_transfer_init(fc_usb)) != 0)
468 goto err_fc_exit;
469
470 info("%s successfully initialized and connected.",DRIVER_NAME);
471 ret = 0;
472 goto success;
473err_fc_exit:
474 flexcop_device_exit(fc);
475err_usb_exit:
476 flexcop_usb_exit(fc_usb);
477err_kfree:
478 flexcop_device_kfree(fc);
479success:
480 return ret;
481}
482
483static void flexcop_usb_disconnect(struct usb_interface *intf)
484{
485 struct flexcop_usb *fc_usb = usb_get_intfdata(intf);
486 flexcop_usb_transfer_exit(fc_usb);
487 flexcop_device_exit(fc_usb->fc_dev);
488 flexcop_usb_exit(fc_usb);
489 flexcop_device_kfree(fc_usb->fc_dev);
490 info("%s successfully deinitialized and disconnected.",DRIVER_NAME);
491}
492
493static struct usb_device_id flexcop_usb_table [] = {
494 { USB_DEVICE(0x0af7, 0x0101) },
495 { }
496};
497
498/* usb specific object needed to register this driver with the usb subsystem */
499static struct usb_driver flexcop_usb_driver = {
500 .owner = THIS_MODULE,
501 .name = "Technisat/B2C2 FlexCop II/IIb/III USB",
502 .probe = flexcop_usb_probe,
503 .disconnect = flexcop_usb_disconnect,
504 .id_table = flexcop_usb_table,
505};
506
507/* module stuff */
508static int __init flexcop_usb_module_init(void)
509{
510 int result;
511 if ((result = usb_register(&flexcop_usb_driver))) {
512 err("usb_register failed. (%d)",result);
513 return result;
514 }
515
516 return 0;
517}
518
519static void __exit flexcop_usb_module_exit(void)
520{
521 /* deregister this driver from the USB subsystem */
522 usb_deregister(&flexcop_usb_driver);
523}
524
525module_init(flexcop_usb_module_init);
526module_exit(flexcop_usb_module_exit);
527
528MODULE_AUTHOR(DRIVER_AUTHOR);
529MODULE_DESCRIPTION(DRIVER_NAME);
530MODULE_LICENSE("GPL");
generated by cgit v1.2.2 (git 2.25.0) at 2024-12-22 12:43:46 -0500