Commit | Line | Data |
---|---|---|
781aa1d1 | 1 | /* |
483dfdb6 | 2 | * usbvision-core.c - driver for NT100x USB video capture devices |
7ca659e3 | 3 | * |
781aa1d1 MCC |
4 | * |
5 | * Copyright (c) 1999-2005 Joerg Heckenbach <joerg@heckenbach-aw.de> | |
483dfdb6 | 6 | * Dwaine Garden <dwainegarden@rogers.com> |
781aa1d1 MCC |
7 | * |
8 | * This module is part of usbvision driver project. | |
483dfdb6 | 9 | * Updates to driver completed by Dwaine P. Garden |
781aa1d1 MCC |
10 | * |
11 | * This program is free software; you can redistribute it and/or modify | |
12 | * it under the terms of the GNU General Public License as published by | |
13 | * the Free Software Foundation; either version 2 of the License, or | |
14 | * (at your option) any later version. | |
15 | * | |
16 | * This program is distributed in the hope that it will be useful, | |
17 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
18 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
19 | * GNU General Public License for more details. | |
20 | * | |
21 | * You should have received a copy of the GNU General Public License | |
22 | * along with this program; if not, write to the Free Software | |
23 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
781aa1d1 MCC |
24 | */ |
25 | ||
26 | #include <linux/kernel.h> | |
781aa1d1 MCC |
27 | #include <linux/list.h> |
28 | #include <linux/timer.h> | |
5a0e3ad6 | 29 | #include <linux/gfp.h> |
781aa1d1 | 30 | #include <linux/mm.h> |
781aa1d1 | 31 | #include <linux/highmem.h> |
781aa1d1 MCC |
32 | #include <linux/vmalloc.h> |
33 | #include <linux/module.h> | |
34 | #include <linux/init.h> | |
35 | #include <linux/spinlock.h> | |
6d6a48e5 | 36 | #include <linux/io.h> |
781aa1d1 | 37 | #include <linux/videodev2.h> |
781aa1d1 | 38 | #include <linux/i2c.h> |
781aa1d1 | 39 | |
18d8a454 DG |
40 | #include <media/saa7115.h> |
41 | #include <media/v4l2-common.h> | |
781aa1d1 | 42 | #include <media/tuner.h> |
781aa1d1 | 43 | |
a1ed551c | 44 | #include <linux/workqueue.h> |
781aa1d1 | 45 | |
781aa1d1 | 46 | #include "usbvision.h" |
781aa1d1 | 47 | |
ff699e6b | 48 | static unsigned int core_debug; |
6d6a48e5 HV |
49 | module_param(core_debug, int, 0644); |
50 | MODULE_PARM_DESC(core_debug, "enable debug messages [core]"); | |
781aa1d1 | 51 | |
5490a7cb HV |
52 | static int adjust_compression = 1; /* Set the compression to be adaptive */ |
53 | module_param(adjust_compression, int, 0444); | |
54 | MODULE_PARM_DESC(adjust_compression, " Set the ADPCM compression for the device. Default: 1 (On)"); | |
483dfdb6 | 55 | |
ff699e6b DSL |
56 | /* To help people with Black and White output with using s-video input. |
57 | * Some cables and input device are wired differently. */ | |
5490a7cb HV |
58 | static int switch_svideo_input; |
59 | module_param(switch_svideo_input, int, 0444); | |
60 | MODULE_PARM_DESC(switch_svideo_input, " Set the S-Video input. Some cables and input device are wired differently. Default: 0 (Off)"); | |
781aa1d1 | 61 | |
5490a7cb HV |
62 | static unsigned int adjust_x_offset = -1; |
63 | module_param(adjust_x_offset, int, 0644); | |
64 | MODULE_PARM_DESC(adjust_x_offset, "adjust X offset display [core]"); | |
c6243d9c | 65 | |
5490a7cb HV |
66 | static unsigned int adjust_y_offset = -1; |
67 | module_param(adjust_y_offset, int, 0644); | |
68 | MODULE_PARM_DESC(adjust_y_offset, "adjust Y offset display [core]"); | |
c6243d9c TM |
69 | |
70 | ||
483dfdb6 | 71 | #define ENABLE_HEXDUMP 0 /* Enable if you need it */ |
781aa1d1 | 72 | |
781aa1d1 MCC |
73 | |
74 | #ifdef USBVISION_DEBUG | |
df18c319 TM |
75 | #define PDEBUG(level, fmt, args...) { \ |
76 | if (core_debug & (level)) \ | |
a482f327 GKH |
77 | printk(KERN_INFO KBUILD_MODNAME ":[%s:%d] " fmt, \ |
78 | __func__, __LINE__ , ## args); \ | |
df18c319 | 79 | } |
781aa1d1 | 80 | #else |
6d6a48e5 | 81 | #define PDEBUG(level, fmt, args...) do {} while (0) |
781aa1d1 MCC |
82 | #endif |
83 | ||
6d6a48e5 HV |
84 | #define DBG_HEADER (1 << 0) |
85 | #define DBG_IRQ (1 << 1) | |
86 | #define DBG_ISOC (1 << 2) | |
87 | #define DBG_PARSE (1 << 3) | |
88 | #define DBG_SCRATCH (1 << 4) | |
89 | #define DBG_FUNC (1 << 5) | |
781aa1d1 MCC |
90 | |
91 | static const int max_imgwidth = MAX_FRAME_WIDTH; | |
92 | static const int max_imgheight = MAX_FRAME_HEIGHT; | |
93 | static const int min_imgwidth = MIN_FRAME_WIDTH; | |
94 | static const int min_imgheight = MIN_FRAME_HEIGHT; | |
95 | ||
483dfdb6 | 96 | /* The value of 'scratch_buf_size' affects quality of the picture |
781aa1d1 MCC |
97 | * in many ways. Shorter buffers may cause loss of data when client |
98 | * is too slow. Larger buffers are memory-consuming and take longer | |
99 | * to work with. This setting can be adjusted, but the default value | |
100 | * should be OK for most desktop users. | |
101 | */ | |
52cb0bf2 | 102 | #define DEFAULT_SCRATCH_BUF_SIZE (0x20000) /* 128kB memory scratch buffer */ |
781aa1d1 MCC |
103 | static const int scratch_buf_size = DEFAULT_SCRATCH_BUF_SIZE; |
104 | ||
52cb0bf2 | 105 | /* Function prototypes */ |
6d6a48e5 HV |
106 | static int usbvision_request_intra(struct usb_usbvision *usbvision); |
107 | static int usbvision_unrequest_intra(struct usb_usbvision *usbvision); | |
108 | static int usbvision_adjust_compression(struct usb_usbvision *usbvision); | |
109 | static int usbvision_measure_bandwidth(struct usb_usbvision *usbvision); | |
781aa1d1 MCC |
110 | |
111 | /*******************************/ | |
112 | /* Memory management functions */ | |
113 | /*******************************/ | |
114 | ||
115 | /* | |
116 | * Here we want the physical address of the memory. | |
117 | * This is used when initializing the contents of the area. | |
118 | */ | |
119 | ||
0a0ceade | 120 | static void *usbvision_rvmalloc(unsigned long size) |
781aa1d1 MCC |
121 | { |
122 | void *mem; | |
123 | unsigned long adr; | |
124 | ||
125 | size = PAGE_ALIGN(size); | |
126 | mem = vmalloc_32(size); | |
127 | if (!mem) | |
128 | return NULL; | |
129 | ||
130 | memset(mem, 0, size); /* Clear the ram out, no junk to the user */ | |
483dfdb6 TM |
131 | adr = (unsigned long) mem; |
132 | while (size > 0) { | |
133 | SetPageReserved(vmalloc_to_page((void *)adr)); | |
134 | adr += PAGE_SIZE; | |
135 | size -= PAGE_SIZE; | |
136 | } | |
137 | ||
138 | return mem; | |
781aa1d1 MCC |
139 | } |
140 | ||
4a06b538 | 141 | static void usbvision_rvfree(void *mem, unsigned long size) |
781aa1d1 | 142 | { |
483dfdb6 TM |
143 | unsigned long adr; |
144 | ||
145 | if (!mem) | |
146 | return; | |
781aa1d1 | 147 | |
483dfdb6 | 148 | size = PAGE_ALIGN(size); |
781aa1d1 | 149 | |
483dfdb6 TM |
150 | adr = (unsigned long) mem; |
151 | while ((long) size > 0) { | |
152 | ClearPageReserved(vmalloc_to_page((void *)adr)); | |
153 | adr += PAGE_SIZE; | |
154 | size -= PAGE_SIZE; | |
155 | } | |
781aa1d1 | 156 | |
483dfdb6 TM |
157 | vfree(mem); |
158 | } | |
781aa1d1 MCC |
159 | |
160 | ||
781aa1d1 MCC |
161 | #if ENABLE_HEXDUMP |
162 | static void usbvision_hexdump(const unsigned char *data, int len) | |
163 | { | |
483dfdb6 TM |
164 | char tmp[80]; |
165 | int i, k; | |
166 | ||
167 | for (i = k = 0; len > 0; i++, len--) { | |
168 | if (i > 0 && (i % 16 == 0)) { | |
169 | printk("%s\n", tmp); | |
170 | k = 0; | |
171 | } | |
172 | k += sprintf(&tmp[k], "%02x ", data[i]); | |
173 | } | |
174 | if (k > 0) | |
6d6a48e5 | 175 | printk(KERN_CONT "%s\n", tmp); |
781aa1d1 MCC |
176 | } |
177 | #endif | |
178 | ||
483dfdb6 TM |
179 | /******************************** |
180 | * scratch ring buffer handling | |
181 | ********************************/ | |
52cb0bf2 | 182 | static int scratch_len(struct usb_usbvision *usbvision) /* This returns the amount of data actually in the buffer */ |
781aa1d1 MCC |
183 | { |
184 | int len = usbvision->scratch_write_ptr - usbvision->scratch_read_ptr; | |
6d6a48e5 HV |
185 | |
186 | if (len < 0) | |
781aa1d1 | 187 | len += scratch_buf_size; |
781aa1d1 MCC |
188 | PDEBUG(DBG_SCRATCH, "scratch_len() = %d\n", len); |
189 | ||
190 | return len; | |
191 | } | |
192 | ||
193 | ||
194 | /* This returns the free space left in the buffer */ | |
0a0ceade | 195 | static int scratch_free(struct usb_usbvision *usbvision) |
781aa1d1 MCC |
196 | { |
197 | int free = usbvision->scratch_read_ptr - usbvision->scratch_write_ptr; | |
6d6a48e5 | 198 | if (free <= 0) |
781aa1d1 | 199 | free += scratch_buf_size; |
781aa1d1 MCC |
200 | if (free) { |
201 | free -= 1; /* at least one byte in the buffer must */ | |
202 | /* left blank, otherwise there is no chance to differ between full and empty */ | |
203 | } | |
204 | PDEBUG(DBG_SCRATCH, "return %d\n", free); | |
205 | ||
206 | return free; | |
207 | } | |
208 | ||
209 | ||
781aa1d1 | 210 | /* This puts data into the buffer */ |
0a0ceade AB |
211 | static int scratch_put(struct usb_usbvision *usbvision, unsigned char *data, |
212 | int len) | |
781aa1d1 MCC |
213 | { |
214 | int len_part; | |
215 | ||
216 | if (usbvision->scratch_write_ptr + len < scratch_buf_size) { | |
217 | memcpy(usbvision->scratch + usbvision->scratch_write_ptr, data, len); | |
218 | usbvision->scratch_write_ptr += len; | |
6d6a48e5 | 219 | } else { |
781aa1d1 MCC |
220 | len_part = scratch_buf_size - usbvision->scratch_write_ptr; |
221 | memcpy(usbvision->scratch + usbvision->scratch_write_ptr, data, len_part); | |
222 | if (len == len_part) { | |
223 | usbvision->scratch_write_ptr = 0; /* just set write_ptr to zero */ | |
6d6a48e5 | 224 | } else { |
781aa1d1 MCC |
225 | memcpy(usbvision->scratch, data + len_part, len - len_part); |
226 | usbvision->scratch_write_ptr = len - len_part; | |
227 | } | |
228 | } | |
229 | ||
230 | PDEBUG(DBG_SCRATCH, "len=%d, new write_ptr=%d\n", len, usbvision->scratch_write_ptr); | |
231 | ||
232 | return len; | |
233 | } | |
234 | ||
235 | /* This marks the write_ptr as position of new frame header */ | |
0a0ceade | 236 | static void scratch_mark_header(struct usb_usbvision *usbvision) |
781aa1d1 MCC |
237 | { |
238 | PDEBUG(DBG_SCRATCH, "header at write_ptr=%d\n", usbvision->scratch_headermarker_write_ptr); | |
239 | ||
240 | usbvision->scratch_headermarker[usbvision->scratch_headermarker_write_ptr] = | |
241 | usbvision->scratch_write_ptr; | |
242 | usbvision->scratch_headermarker_write_ptr += 1; | |
243 | usbvision->scratch_headermarker_write_ptr %= USBVISION_NUM_HEADERMARKER; | |
244 | } | |
245 | ||
246 | /* This gets data from the buffer at the given "ptr" position */ | |
0a0ceade AB |
247 | static int scratch_get_extra(struct usb_usbvision *usbvision, |
248 | unsigned char *data, int *ptr, int len) | |
781aa1d1 MCC |
249 | { |
250 | int len_part; | |
6d6a48e5 | 251 | |
781aa1d1 MCC |
252 | if (*ptr + len < scratch_buf_size) { |
253 | memcpy(data, usbvision->scratch + *ptr, len); | |
254 | *ptr += len; | |
6d6a48e5 | 255 | } else { |
781aa1d1 MCC |
256 | len_part = scratch_buf_size - *ptr; |
257 | memcpy(data, usbvision->scratch + *ptr, len_part); | |
258 | if (len == len_part) { | |
259 | *ptr = 0; /* just set the y_ptr to zero */ | |
6d6a48e5 | 260 | } else { |
781aa1d1 MCC |
261 | memcpy(data + len_part, usbvision->scratch, len - len_part); |
262 | *ptr = len - len_part; | |
263 | } | |
264 | } | |
265 | ||
266 | PDEBUG(DBG_SCRATCH, "len=%d, new ptr=%d\n", len, *ptr); | |
267 | ||
268 | return len; | |
269 | } | |
270 | ||
271 | ||
272 | /* This sets the scratch extra read pointer */ | |
0a0ceade AB |
273 | static void scratch_set_extra_ptr(struct usb_usbvision *usbvision, int *ptr, |
274 | int len) | |
781aa1d1 | 275 | { |
6d6a48e5 | 276 | *ptr = (usbvision->scratch_read_ptr + len) % scratch_buf_size; |
781aa1d1 MCC |
277 | |
278 | PDEBUG(DBG_SCRATCH, "ptr=%d\n", *ptr); | |
279 | } | |
280 | ||
281 | ||
52cb0bf2 | 282 | /* This increments the scratch extra read pointer */ |
0a0ceade | 283 | static void scratch_inc_extra_ptr(int *ptr, int len) |
781aa1d1 MCC |
284 | { |
285 | *ptr = (*ptr + len) % scratch_buf_size; | |
286 | ||
287 | PDEBUG(DBG_SCRATCH, "ptr=%d\n", *ptr); | |
288 | } | |
289 | ||
290 | ||
291 | /* This gets data from the buffer */ | |
0a0ceade AB |
292 | static int scratch_get(struct usb_usbvision *usbvision, unsigned char *data, |
293 | int len) | |
781aa1d1 MCC |
294 | { |
295 | int len_part; | |
6d6a48e5 | 296 | |
781aa1d1 MCC |
297 | if (usbvision->scratch_read_ptr + len < scratch_buf_size) { |
298 | memcpy(data, usbvision->scratch + usbvision->scratch_read_ptr, len); | |
299 | usbvision->scratch_read_ptr += len; | |
6d6a48e5 | 300 | } else { |
781aa1d1 MCC |
301 | len_part = scratch_buf_size - usbvision->scratch_read_ptr; |
302 | memcpy(data, usbvision->scratch + usbvision->scratch_read_ptr, len_part); | |
303 | if (len == len_part) { | |
304 | usbvision->scratch_read_ptr = 0; /* just set the read_ptr to zero */ | |
6d6a48e5 | 305 | } else { |
781aa1d1 MCC |
306 | memcpy(data + len_part, usbvision->scratch, len - len_part); |
307 | usbvision->scratch_read_ptr = len - len_part; | |
308 | } | |
309 | } | |
310 | ||
311 | PDEBUG(DBG_SCRATCH, "len=%d, new read_ptr=%d\n", len, usbvision->scratch_read_ptr); | |
312 | ||
313 | return len; | |
314 | } | |
315 | ||
316 | ||
317 | /* This sets read pointer to next header and returns it */ | |
0a0ceade AB |
318 | static int scratch_get_header(struct usb_usbvision *usbvision, |
319 | struct usbvision_frame_header *header) | |
781aa1d1 | 320 | { |
5490a7cb | 321 | int err_code = 0; |
781aa1d1 MCC |
322 | |
323 | PDEBUG(DBG_SCRATCH, "from read_ptr=%d", usbvision->scratch_headermarker_read_ptr); | |
324 | ||
325 | while (usbvision->scratch_headermarker_write_ptr - | |
326 | usbvision->scratch_headermarker_read_ptr != 0) { | |
327 | usbvision->scratch_read_ptr = | |
328 | usbvision->scratch_headermarker[usbvision->scratch_headermarker_read_ptr]; | |
329 | usbvision->scratch_headermarker_read_ptr += 1; | |
330 | usbvision->scratch_headermarker_read_ptr %= USBVISION_NUM_HEADERMARKER; | |
331 | scratch_get(usbvision, (unsigned char *)header, USBVISION_HEADER_LENGTH); | |
332 | if ((header->magic_1 == USBVISION_MAGIC_1) | |
333 | && (header->magic_2 == USBVISION_MAGIC_2) | |
5490a7cb HV |
334 | && (header->header_length == USBVISION_HEADER_LENGTH)) { |
335 | err_code = USBVISION_HEADER_LENGTH; | |
336 | header->frame_width = header->frame_width_lo + (header->frame_width_hi << 8); | |
337 | header->frame_height = header->frame_height_lo + (header->frame_height_hi << 8); | |
781aa1d1 MCC |
338 | break; |
339 | } | |
340 | } | |
341 | ||
5490a7cb | 342 | return err_code; |
781aa1d1 MCC |
343 | } |
344 | ||
345 | ||
52cb0bf2 | 346 | /* This removes len bytes of old data from the buffer */ |
0a0ceade | 347 | static void scratch_rm_old(struct usb_usbvision *usbvision, int len) |
781aa1d1 | 348 | { |
781aa1d1 MCC |
349 | usbvision->scratch_read_ptr += len; |
350 | usbvision->scratch_read_ptr %= scratch_buf_size; | |
351 | PDEBUG(DBG_SCRATCH, "read_ptr is now %d\n", usbvision->scratch_read_ptr); | |
352 | } | |
353 | ||
354 | ||
52cb0bf2 | 355 | /* This resets the buffer - kills all data in it too */ |
0a0ceade | 356 | static void scratch_reset(struct usb_usbvision *usbvision) |
781aa1d1 MCC |
357 | { |
358 | PDEBUG(DBG_SCRATCH, "\n"); | |
359 | ||
360 | usbvision->scratch_read_ptr = 0; | |
361 | usbvision->scratch_write_ptr = 0; | |
362 | usbvision->scratch_headermarker_read_ptr = 0; | |
363 | usbvision->scratch_headermarker_write_ptr = 0; | |
5490a7cb | 364 | usbvision->isocstate = isoc_state_no_frame; |
781aa1d1 MCC |
365 | } |
366 | ||
483dfdb6 | 367 | int usbvision_scratch_alloc(struct usb_usbvision *usbvision) |
781aa1d1 | 368 | { |
38284ba3 | 369 | usbvision->scratch = vmalloc_32(scratch_buf_size); |
483dfdb6 | 370 | scratch_reset(usbvision); |
6d6a48e5 | 371 | if (usbvision->scratch == NULL) { |
be9ed511 MCC |
372 | dev_err(&usbvision->dev->dev, |
373 | "%s: unable to allocate %d bytes for scratch\n", | |
374 | __func__, scratch_buf_size); | |
483dfdb6 | 375 | return -ENOMEM; |
781aa1d1 | 376 | } |
483dfdb6 | 377 | return 0; |
781aa1d1 MCC |
378 | } |
379 | ||
483dfdb6 | 380 | void usbvision_scratch_free(struct usb_usbvision *usbvision) |
781aa1d1 | 381 | { |
5e2c217e F |
382 | vfree(usbvision->scratch); |
383 | usbvision->scratch = NULL; | |
781aa1d1 MCC |
384 | } |
385 | ||
781aa1d1 | 386 | /* |
483dfdb6 TM |
387 | * usbvision_decompress_alloc() |
388 | * | |
389 | * allocates intermediate buffer for decompression | |
781aa1d1 | 390 | */ |
483dfdb6 TM |
391 | int usbvision_decompress_alloc(struct usb_usbvision *usbvision) |
392 | { | |
393 | int IFB_size = MAX_FRAME_WIDTH * MAX_FRAME_HEIGHT * 3 / 2; | |
6d6a48e5 | 394 | |
5490a7cb HV |
395 | usbvision->intra_frame_buffer = vmalloc_32(IFB_size); |
396 | if (usbvision->intra_frame_buffer == NULL) { | |
be9ed511 MCC |
397 | dev_err(&usbvision->dev->dev, |
398 | "%s: unable to allocate %d for compr. frame buffer\n", | |
399 | __func__, IFB_size); | |
483dfdb6 TM |
400 | return -ENOMEM; |
401 | } | |
402 | return 0; | |
403 | } | |
404 | ||
405 | /* | |
406 | * usbvision_decompress_free() | |
407 | * | |
408 | * frees intermediate buffer for decompression | |
409 | */ | |
410 | void usbvision_decompress_free(struct usb_usbvision *usbvision) | |
411 | { | |
5490a7cb HV |
412 | vfree(usbvision->intra_frame_buffer); |
413 | usbvision->intra_frame_buffer = NULL; | |
5e2c217e | 414 | |
483dfdb6 TM |
415 | } |
416 | ||
417 | /************************************************************ | |
418 | * Here comes the data parsing stuff that is run as interrupt | |
419 | ************************************************************/ | |
781aa1d1 MCC |
420 | /* |
421 | * usbvision_find_header() | |
422 | * | |
423 | * Locate one of supported header markers in the scratch buffer. | |
424 | */ | |
5490a7cb | 425 | static enum parse_state usbvision_find_header(struct usb_usbvision *usbvision) |
781aa1d1 MCC |
426 | { |
427 | struct usbvision_frame *frame; | |
5490a7cb | 428 | int found_header = 0; |
781aa1d1 | 429 | |
5490a7cb | 430 | frame = usbvision->cur_frame; |
781aa1d1 | 431 | |
5490a7cb | 432 | while (scratch_get_header(usbvision, &frame->isoc_header) == USBVISION_HEADER_LENGTH) { |
52cb0bf2 | 433 | /* found header in scratch */ |
781aa1d1 | 434 | PDEBUG(DBG_HEADER, "found header: 0x%02x%02x %d %d %d %d %#x 0x%02x %u %u", |
5490a7cb HV |
435 | frame->isoc_header.magic_2, |
436 | frame->isoc_header.magic_1, | |
437 | frame->isoc_header.header_length, | |
438 | frame->isoc_header.frame_num, | |
439 | frame->isoc_header.frame_phase, | |
440 | frame->isoc_header.frame_latency, | |
441 | frame->isoc_header.data_format, | |
442 | frame->isoc_header.format_param, | |
443 | frame->isoc_header.frame_width, | |
444 | frame->isoc_header.frame_height); | |
445 | ||
446 | if (usbvision->request_intra) { | |
447 | if (frame->isoc_header.format_param & 0x80) { | |
448 | found_header = 1; | |
52cb0bf2 | 449 | usbvision->last_isoc_frame_num = -1; /* do not check for lost frames this time */ |
781aa1d1 MCC |
450 | usbvision_unrequest_intra(usbvision); |
451 | break; | |
452 | } | |
6d6a48e5 | 453 | } else { |
5490a7cb | 454 | found_header = 1; |
781aa1d1 MCC |
455 | break; |
456 | } | |
457 | } | |
458 | ||
5490a7cb HV |
459 | if (found_header) { |
460 | frame->frmwidth = frame->isoc_header.frame_width * usbvision->stretch_width; | |
461 | frame->frmheight = frame->isoc_header.frame_height * usbvision->stretch_height; | |
6d6a48e5 HV |
462 | frame->v4l2_linesize = (frame->frmwidth * frame->v4l2_format.depth) >> 3; |
463 | } else { /* no header found */ | |
781aa1d1 MCC |
464 | PDEBUG(DBG_HEADER, "skipping scratch data, no header"); |
465 | scratch_reset(usbvision); | |
5490a7cb | 466 | return parse_state_end_parse; |
781aa1d1 MCC |
467 | } |
468 | ||
52cb0bf2 | 469 | /* found header */ |
6d6a48e5 | 470 | if (frame->isoc_header.data_format == ISOC_MODE_COMPRESS) { |
52cb0bf2 | 471 | /* check isoc_header.frame_num for lost frames */ |
5490a7cb HV |
472 | if (usbvision->last_isoc_frame_num >= 0) { |
473 | if (((usbvision->last_isoc_frame_num + 1) % 32) != frame->isoc_header.frame_num) { | |
52cb0bf2 | 474 | /* unexpected frame drop: need to request new intra frame */ |
5490a7cb | 475 | PDEBUG(DBG_HEADER, "Lost frame before %d on USB", frame->isoc_header.frame_num); |
781aa1d1 | 476 | usbvision_request_intra(usbvision); |
5490a7cb | 477 | return parse_state_next_frame; |
781aa1d1 MCC |
478 | } |
479 | } | |
5490a7cb | 480 | usbvision->last_isoc_frame_num = frame->isoc_header.frame_num; |
781aa1d1 MCC |
481 | } |
482 | usbvision->header_count++; | |
5490a7cb | 483 | frame->scanstate = scan_state_lines; |
781aa1d1 MCC |
484 | frame->curline = 0; |
485 | ||
5490a7cb | 486 | return parse_state_continue; |
781aa1d1 MCC |
487 | } |
488 | ||
5490a7cb | 489 | static enum parse_state usbvision_parse_lines_422(struct usb_usbvision *usbvision, |
781aa1d1 MCC |
490 | long *pcopylen) |
491 | { | |
492 | volatile struct usbvision_frame *frame; | |
493 | unsigned char *f; | |
494 | int len; | |
495 | int i; | |
6d6a48e5 | 496 | unsigned char yuyv[4] = { 180, 128, 10, 128 }; /* YUV components */ |
52cb0bf2 | 497 | unsigned char rv, gv, bv; /* RGB components */ |
781aa1d1 | 498 | int clipmask_index, bytes_per_pixel; |
781aa1d1 MCC |
499 | int stretch_bytes, clipmask_add; |
500 | ||
5490a7cb | 501 | frame = usbvision->cur_frame; |
483dfdb6 | 502 | f = frame->data + (frame->v4l2_linesize * frame->curline); |
781aa1d1 MCC |
503 | |
504 | /* Make sure there's enough data for the entire line */ | |
6d6a48e5 | 505 | len = (frame->isoc_header.frame_width * 2) + 5; |
781aa1d1 MCC |
506 | if (scratch_len(usbvision) < len) { |
507 | PDEBUG(DBG_PARSE, "out of data in line %d, need %u.\n", frame->curline, len); | |
5490a7cb | 508 | return parse_state_out; |
781aa1d1 MCC |
509 | } |
510 | ||
6d6a48e5 | 511 | if ((frame->curline + 1) >= frame->frmheight) |
5490a7cb | 512 | return parse_state_next_frame; |
781aa1d1 MCC |
513 | |
514 | bytes_per_pixel = frame->v4l2_format.bytes_per_pixel; | |
515 | stretch_bytes = (usbvision->stretch_width - 1) * bytes_per_pixel; | |
516 | clipmask_index = frame->curline * MAX_FRAME_WIDTH; | |
517 | clipmask_add = usbvision->stretch_width; | |
518 | ||
6d6a48e5 | 519 | for (i = 0; i < frame->frmwidth; i += (2 * usbvision->stretch_width)) { |
781aa1d1 MCC |
520 | scratch_get(usbvision, &yuyv[0], 4); |
521 | ||
483dfdb6 | 522 | if (frame->v4l2_format.format == V4L2_PIX_FMT_YUYV) { |
52cb0bf2 HV |
523 | *f++ = yuyv[0]; /* Y */ |
524 | *f++ = yuyv[3]; /* U */ | |
6d6a48e5 | 525 | } else { |
781aa1d1 MCC |
526 | YUV_TO_RGB_BY_THE_BOOK(yuyv[0], yuyv[1], yuyv[3], rv, gv, bv); |
527 | switch (frame->v4l2_format.format) { | |
6200bbaa TM |
528 | case V4L2_PIX_FMT_RGB565: |
529 | *f++ = (0x1F & rv) | | |
530 | (0xE0 & (gv << 5)); | |
531 | *f++ = (0x07 & (gv >> 3)) | | |
532 | (0xF8 & bv); | |
533 | break; | |
534 | case V4L2_PIX_FMT_RGB24: | |
535 | *f++ = rv; | |
536 | *f++ = gv; | |
537 | *f++ = bv; | |
538 | break; | |
539 | case V4L2_PIX_FMT_RGB32: | |
540 | *f++ = rv; | |
541 | *f++ = gv; | |
542 | *f++ = bv; | |
543 | f++; | |
544 | break; | |
545 | case V4L2_PIX_FMT_RGB555: | |
546 | *f++ = (0x1F & rv) | | |
547 | (0xE0 & (gv << 5)); | |
548 | *f++ = (0x03 & (gv >> 3)) | | |
549 | (0x7C & (bv << 2)); | |
550 | break; | |
781aa1d1 MCC |
551 | } |
552 | } | |
553 | clipmask_index += clipmask_add; | |
554 | f += stretch_bytes; | |
555 | ||
483dfdb6 | 556 | if (frame->v4l2_format.format == V4L2_PIX_FMT_YUYV) { |
52cb0bf2 HV |
557 | *f++ = yuyv[2]; /* Y */ |
558 | *f++ = yuyv[1]; /* V */ | |
6d6a48e5 | 559 | } else { |
781aa1d1 MCC |
560 | YUV_TO_RGB_BY_THE_BOOK(yuyv[2], yuyv[1], yuyv[3], rv, gv, bv); |
561 | switch (frame->v4l2_format.format) { | |
6200bbaa TM |
562 | case V4L2_PIX_FMT_RGB565: |
563 | *f++ = (0x1F & rv) | | |
564 | (0xE0 & (gv << 5)); | |
565 | *f++ = (0x07 & (gv >> 3)) | | |
566 | (0xF8 & bv); | |
567 | break; | |
568 | case V4L2_PIX_FMT_RGB24: | |
569 | *f++ = rv; | |
570 | *f++ = gv; | |
571 | *f++ = bv; | |
572 | break; | |
573 | case V4L2_PIX_FMT_RGB32: | |
574 | *f++ = rv; | |
575 | *f++ = gv; | |
576 | *f++ = bv; | |
577 | f++; | |
578 | break; | |
579 | case V4L2_PIX_FMT_RGB555: | |
580 | *f++ = (0x1F & rv) | | |
581 | (0xE0 & (gv << 5)); | |
582 | *f++ = (0x03 & (gv >> 3)) | | |
583 | (0x7C & (bv << 2)); | |
584 | break; | |
781aa1d1 MCC |
585 | } |
586 | } | |
587 | clipmask_index += clipmask_add; | |
588 | f += stretch_bytes; | |
589 | } | |
590 | ||
591 | frame->curline += usbvision->stretch_height; | |
592 | *pcopylen += frame->v4l2_linesize * usbvision->stretch_height; | |
593 | ||
6d6a48e5 | 594 | if (frame->curline >= frame->frmheight) |
5490a7cb | 595 | return parse_state_next_frame; |
6d6a48e5 | 596 | return parse_state_continue; |
781aa1d1 MCC |
597 | } |
598 | ||
483dfdb6 | 599 | /* The decompression routine */ |
6d6a48e5 | 600 | static int usbvision_decompress(struct usb_usbvision *usbvision, unsigned char *compressed, |
5490a7cb HV |
601 | unsigned char *decompressed, int *start_pos, |
602 | int *block_typestart_pos, int len) | |
781aa1d1 | 603 | { |
8173090a | 604 | int rest_pixel, idx, pos, extra_pos, block_len, block_type_pos, block_type_len; |
5490a7cb HV |
605 | unsigned char block_byte, block_code, block_type, block_type_byte, integrator; |
606 | ||
607 | integrator = 0; | |
608 | pos = *start_pos; | |
609 | block_type_pos = *block_typestart_pos; | |
5490a7cb HV |
610 | extra_pos = pos; |
611 | block_len = 0; | |
612 | block_byte = 0; | |
613 | block_code = 0; | |
614 | block_type = 0; | |
615 | block_type_byte = 0; | |
616 | block_type_len = 0; | |
617 | rest_pixel = len; | |
618 | ||
619 | for (idx = 0; idx < len; idx++) { | |
5490a7cb | 620 | if (block_len == 0) { |
6d6a48e5 | 621 | if (block_type_len == 0) { |
5490a7cb HV |
622 | block_type_byte = compressed[block_type_pos]; |
623 | block_type_pos++; | |
624 | block_type_len = 4; | |
781aa1d1 | 625 | } |
5490a7cb | 626 | block_type = (block_type_byte & 0xC0) >> 6; |
781aa1d1 | 627 | |
52cb0bf2 | 628 | /* statistic: */ |
5490a7cb HV |
629 | usbvision->compr_block_types[block_type]++; |
630 | ||
631 | pos = extra_pos; | |
632 | if (block_type == 0) { | |
6d6a48e5 | 633 | if (rest_pixel >= 24) { |
5490a7cb HV |
634 | idx += 23; |
635 | rest_pixel -= 24; | |
636 | integrator = decompressed[idx]; | |
781aa1d1 | 637 | } else { |
5490a7cb HV |
638 | idx += rest_pixel - 1; |
639 | rest_pixel = 0; | |
781aa1d1 MCC |
640 | } |
641 | } else { | |
5490a7cb HV |
642 | block_code = compressed[pos]; |
643 | pos++; | |
6d6a48e5 | 644 | if (rest_pixel >= 24) |
5490a7cb | 645 | block_len = 24; |
6d6a48e5 | 646 | else |
5490a7cb | 647 | block_len = rest_pixel; |
5490a7cb HV |
648 | rest_pixel -= block_len; |
649 | extra_pos = pos + (block_len / 4); | |
781aa1d1 | 650 | } |
5490a7cb HV |
651 | block_type_byte <<= 2; |
652 | block_type_len -= 1; | |
781aa1d1 | 653 | } |
5490a7cb | 654 | if (block_len > 0) { |
6d6a48e5 | 655 | if ((block_len % 4) == 0) { |
5490a7cb HV |
656 | block_byte = compressed[pos]; |
657 | pos++; | |
781aa1d1 | 658 | } |
6d6a48e5 | 659 | if (block_type == 1) /* inter Block */ |
5490a7cb | 660 | integrator = decompressed[idx]; |
5490a7cb | 661 | switch (block_byte & 0xC0) { |
6d6a48e5 HV |
662 | case 0x03 << 6: |
663 | integrator += compressed[extra_pos]; | |
664 | extra_pos++; | |
665 | break; | |
666 | case 0x02 << 6: | |
667 | integrator += block_code; | |
668 | break; | |
669 | case 0x00: | |
670 | integrator -= block_code; | |
671 | break; | |
781aa1d1 | 672 | } |
5490a7cb HV |
673 | decompressed[idx] = integrator; |
674 | block_byte <<= 2; | |
675 | block_len -= 1; | |
781aa1d1 MCC |
676 | } |
677 | } | |
5490a7cb HV |
678 | *start_pos = extra_pos; |
679 | *block_typestart_pos = block_type_pos; | |
680 | return idx; | |
781aa1d1 MCC |
681 | } |
682 | ||
683 | ||
684 | /* | |
685 | * usbvision_parse_compress() | |
686 | * | |
687 | * Parse compressed frame from the scratch buffer, put | |
688 | * decoded RGB value into the current frame buffer and add the written | |
689 | * number of bytes (RGB) to the *pcopylen. | |
690 | * | |
691 | */ | |
5490a7cb | 692 | static enum parse_state usbvision_parse_compress(struct usb_usbvision *usbvision, |
781aa1d1 MCC |
693 | long *pcopylen) |
694 | { | |
695 | #define USBVISION_STRIP_MAGIC 0x5A | |
696 | #define USBVISION_STRIP_LEN_MAX 400 | |
697 | #define USBVISION_STRIP_HEADER_LEN 3 | |
698 | ||
699 | struct usbvision_frame *frame; | |
6d6a48e5 | 700 | unsigned char *f, *u = NULL, *v = NULL; |
5490a7cb HV |
701 | unsigned char strip_data[USBVISION_STRIP_LEN_MAX]; |
702 | unsigned char strip_header[USBVISION_STRIP_HEADER_LEN]; | |
6d6a48e5 | 703 | int idx, idx_end, strip_len, strip_ptr, startblock_pos, block_pos, block_type_pos; |
8173090a | 704 | int clipmask_index; |
5490a7cb | 705 | int image_size; |
781aa1d1 MCC |
706 | unsigned char rv, gv, bv; |
707 | static unsigned char *Y, *U, *V; | |
708 | ||
6d6a48e5 | 709 | frame = usbvision->cur_frame; |
5490a7cb | 710 | image_size = frame->frmwidth * frame->frmheight; |
6d6a48e5 HV |
711 | if ((frame->v4l2_format.format == V4L2_PIX_FMT_YUV422P) || |
712 | (frame->v4l2_format.format == V4L2_PIX_FMT_YVU420)) { /* this is a planar format */ | |
52cb0bf2 | 713 | /* ... v4l2_linesize not used here. */ |
483dfdb6 TM |
714 | f = frame->data + (frame->width * frame->curline); |
715 | } else | |
716 | f = frame->data + (frame->v4l2_linesize * frame->curline); | |
717 | ||
6d6a48e5 | 718 | if (frame->v4l2_format.format == V4L2_PIX_FMT_YUYV) { /* initialise u and v pointers */ |
52cb0bf2 | 719 | /* get base of u and b planes add halfoffset */ |
483dfdb6 | 720 | u = frame->data |
5490a7cb | 721 | + image_size |
6d6a48e5 HV |
722 | + (frame->frmwidth >> 1) * frame->curline; |
723 | v = u + (image_size >> 1); | |
724 | } else if (frame->v4l2_format.format == V4L2_PIX_FMT_YVU420) { | |
725 | v = frame->data + image_size + ((frame->curline * (frame->width)) >> 2); | |
726 | u = v + (image_size >> 2); | |
781aa1d1 MCC |
727 | } |
728 | ||
6d6a48e5 | 729 | if (frame->curline == 0) |
781aa1d1 | 730 | usbvision_adjust_compression(usbvision); |
781aa1d1 | 731 | |
6d6a48e5 | 732 | if (scratch_len(usbvision) < USBVISION_STRIP_HEADER_LEN) |
5490a7cb | 733 | return parse_state_out; |
781aa1d1 | 734 | |
52cb0bf2 | 735 | /* get strip header without changing the scratch_read_ptr */ |
5490a7cb HV |
736 | scratch_set_extra_ptr(usbvision, &strip_ptr, 0); |
737 | scratch_get_extra(usbvision, &strip_header[0], &strip_ptr, | |
781aa1d1 MCC |
738 | USBVISION_STRIP_HEADER_LEN); |
739 | ||
5490a7cb | 740 | if (strip_header[0] != USBVISION_STRIP_MAGIC) { |
52cb0bf2 | 741 | /* wrong strip magic */ |
5490a7cb HV |
742 | usbvision->strip_magic_errors++; |
743 | return parse_state_next_frame; | |
781aa1d1 MCC |
744 | } |
745 | ||
5490a7cb | 746 | if (frame->curline != (int)strip_header[2]) { |
6d6a48e5 | 747 | /* line number mismatch error */ |
5490a7cb | 748 | usbvision->strip_line_number_errors++; |
781aa1d1 MCC |
749 | } |
750 | ||
5490a7cb HV |
751 | strip_len = 2 * (unsigned int)strip_header[1]; |
752 | if (strip_len > USBVISION_STRIP_LEN_MAX) { | |
52cb0bf2 HV |
753 | /* strip overrun */ |
754 | /* I think this never happens */ | |
781aa1d1 MCC |
755 | usbvision_request_intra(usbvision); |
756 | } | |
757 | ||
5490a7cb | 758 | if (scratch_len(usbvision) < strip_len) { |
52cb0bf2 | 759 | /* there is not enough data for the strip */ |
5490a7cb | 760 | return parse_state_out; |
781aa1d1 MCC |
761 | } |
762 | ||
5490a7cb HV |
763 | if (usbvision->intra_frame_buffer) { |
764 | Y = usbvision->intra_frame_buffer + frame->frmwidth * frame->curline; | |
765 | U = usbvision->intra_frame_buffer + image_size + (frame->frmwidth / 2) * (frame->curline / 2); | |
766 | V = usbvision->intra_frame_buffer + image_size / 4 * 5 + (frame->frmwidth / 2) * (frame->curline / 2); | |
6d6a48e5 | 767 | } else { |
5490a7cb | 768 | return parse_state_next_frame; |
781aa1d1 MCC |
769 | } |
770 | ||
781aa1d1 MCC |
771 | clipmask_index = frame->curline * MAX_FRAME_WIDTH; |
772 | ||
5490a7cb | 773 | scratch_get(usbvision, strip_data, strip_len); |
781aa1d1 | 774 | |
5490a7cb HV |
775 | idx_end = frame->frmwidth; |
776 | block_type_pos = USBVISION_STRIP_HEADER_LEN; | |
6d6a48e5 HV |
777 | startblock_pos = block_type_pos + (idx_end - 1) / 96 + (idx_end / 2 - 1) / 96 + 2; |
778 | block_pos = startblock_pos; | |
781aa1d1 | 779 | |
5490a7cb | 780 | usbvision->block_pos = block_pos; |
781aa1d1 | 781 | |
8173090a | 782 | usbvision_decompress(usbvision, strip_data, Y, &block_pos, &block_type_pos, idx_end); |
6d6a48e5 | 783 | if (strip_len > usbvision->max_strip_len) |
5490a7cb | 784 | usbvision->max_strip_len = strip_len; |
781aa1d1 | 785 | |
6d6a48e5 | 786 | if (frame->curline % 2) |
8173090a | 787 | usbvision_decompress(usbvision, strip_data, V, &block_pos, &block_type_pos, idx_end / 2); |
6d6a48e5 | 788 | else |
8173090a | 789 | usbvision_decompress(usbvision, strip_data, U, &block_pos, &block_type_pos, idx_end / 2); |
781aa1d1 | 790 | |
6d6a48e5 | 791 | if (block_pos > usbvision->comprblock_pos) |
5490a7cb | 792 | usbvision->comprblock_pos = block_pos; |
6d6a48e5 | 793 | if (block_pos > strip_len) |
5490a7cb | 794 | usbvision->strip_len_errors++; |
18d8a454 | 795 | |
5490a7cb | 796 | for (idx = 0; idx < idx_end; idx++) { |
6d6a48e5 | 797 | if (frame->v4l2_format.format == V4L2_PIX_FMT_YUYV) { |
5490a7cb | 798 | *f++ = Y[idx]; |
6d6a48e5 HV |
799 | *f++ = idx & 0x01 ? U[idx / 2] : V[idx / 2]; |
800 | } else if (frame->v4l2_format.format == V4L2_PIX_FMT_YUV422P) { | |
5490a7cb | 801 | *f++ = Y[idx]; |
6d6a48e5 HV |
802 | if (idx & 0x01) |
803 | *u++ = U[idx >> 1]; | |
781aa1d1 | 804 | else |
6d6a48e5 HV |
805 | *v++ = V[idx >> 1]; |
806 | } else if (frame->v4l2_format.format == V4L2_PIX_FMT_YVU420) { | |
807 | *f++ = Y[idx]; | |
808 | if (!((idx & 0x01) | (frame->curline & 0x01))) { | |
809 | /* only need do this for 1 in 4 pixels */ | |
810 | /* intraframe buffer is YUV420 format */ | |
811 | *u++ = U[idx >> 1]; | |
812 | *v++ = V[idx >> 1]; | |
781aa1d1 | 813 | } |
6d6a48e5 HV |
814 | } else { |
815 | YUV_TO_RGB_BY_THE_BOOK(Y[idx], U[idx / 2], V[idx / 2], rv, gv, bv); | |
781aa1d1 | 816 | switch (frame->v4l2_format.format) { |
6d6a48e5 HV |
817 | case V4L2_PIX_FMT_GREY: |
818 | *f++ = Y[idx]; | |
819 | break; | |
820 | case V4L2_PIX_FMT_RGB555: | |
821 | *f++ = (0x1F & rv) | | |
822 | (0xE0 & (gv << 5)); | |
823 | *f++ = (0x03 & (gv >> 3)) | | |
824 | (0x7C & (bv << 2)); | |
825 | break; | |
826 | case V4L2_PIX_FMT_RGB565: | |
827 | *f++ = (0x1F & rv) | | |
828 | (0xE0 & (gv << 5)); | |
829 | *f++ = (0x07 & (gv >> 3)) | | |
830 | (0xF8 & bv); | |
831 | break; | |
832 | case V4L2_PIX_FMT_RGB24: | |
833 | *f++ = rv; | |
834 | *f++ = gv; | |
835 | *f++ = bv; | |
836 | break; | |
837 | case V4L2_PIX_FMT_RGB32: | |
838 | *f++ = rv; | |
839 | *f++ = gv; | |
840 | *f++ = bv; | |
841 | f++; | |
842 | break; | |
781aa1d1 MCC |
843 | } |
844 | } | |
845 | clipmask_index++; | |
846 | } | |
18d8a454 | 847 | /* Deal with non-integer no. of bytes for YUV420P */ |
6d6a48e5 | 848 | if (frame->v4l2_format.format != V4L2_PIX_FMT_YVU420) |
18d8a454 DG |
849 | *pcopylen += frame->v4l2_linesize; |
850 | else | |
851 | *pcopylen += frame->curline & 0x01 ? frame->v4l2_linesize : frame->v4l2_linesize << 1; | |
852 | ||
781aa1d1 MCC |
853 | frame->curline += 1; |
854 | ||
6d6a48e5 | 855 | if (frame->curline >= frame->frmheight) |
5490a7cb | 856 | return parse_state_next_frame; |
6d6a48e5 | 857 | return parse_state_continue; |
781aa1d1 MCC |
858 | |
859 | } | |
860 | ||
861 | ||
862 | /* | |
863 | * usbvision_parse_lines_420() | |
864 | * | |
865 | * Parse two lines from the scratch buffer, put | |
866 | * decoded RGB value into the current frame buffer and add the written | |
867 | * number of bytes (RGB) to the *pcopylen. | |
868 | * | |
869 | */ | |
5490a7cb | 870 | static enum parse_state usbvision_parse_lines_420(struct usb_usbvision *usbvision, |
781aa1d1 MCC |
871 | long *pcopylen) |
872 | { | |
873 | struct usbvision_frame *frame; | |
874 | unsigned char *f_even = NULL, *f_odd = NULL; | |
875 | unsigned int pixel_per_line, block; | |
876 | int pixel, block_split; | |
877 | int y_ptr, u_ptr, v_ptr, y_odd_offset; | |
6d6a48e5 HV |
878 | const int y_block_size = 128; |
879 | const int uv_block_size = 64; | |
781aa1d1 | 880 | const int sub_block_size = 32; |
6d6a48e5 HV |
881 | const int y_step[] = { 0, 0, 0, 2 }, y_step_size = 4; |
882 | const int uv_step[] = { 0, 0, 0, 4 }, uv_step_size = 4; | |
781aa1d1 MCC |
883 | unsigned char y[2], u, v; /* YUV components */ |
884 | int y_, u_, v_, vb, uvg, ur; | |
885 | int r_, g_, b_; /* RGB components */ | |
886 | unsigned char g; | |
887 | int clipmask_even_index, clipmask_odd_index, bytes_per_pixel; | |
888 | int clipmask_add, stretch_bytes; | |
781aa1d1 | 889 | |
5490a7cb | 890 | frame = usbvision->cur_frame; |
483dfdb6 TM |
891 | f_even = frame->data + (frame->v4l2_linesize * frame->curline); |
892 | f_odd = f_even + frame->v4l2_linesize * usbvision->stretch_height; | |
781aa1d1 MCC |
893 | |
894 | /* Make sure there's enough data for the entire line */ | |
895 | /* In this mode usbvision transfer 3 bytes for every 2 pixels */ | |
896 | /* I need two lines to decode the color */ | |
18d8a454 | 897 | bytes_per_pixel = frame->v4l2_format.bytes_per_pixel; |
781aa1d1 MCC |
898 | stretch_bytes = (usbvision->stretch_width - 1) * bytes_per_pixel; |
899 | clipmask_even_index = frame->curline * MAX_FRAME_WIDTH; | |
900 | clipmask_odd_index = clipmask_even_index + MAX_FRAME_WIDTH; | |
901 | clipmask_add = usbvision->stretch_width; | |
5490a7cb | 902 | pixel_per_line = frame->isoc_header.frame_width; |
781aa1d1 MCC |
903 | |
904 | if (scratch_len(usbvision) < (int)pixel_per_line * 3) { | |
52cb0bf2 | 905 | /* printk(KERN_DEBUG "out of data, need %d\n", len); */ |
5490a7cb | 906 | return parse_state_out; |
781aa1d1 MCC |
907 | } |
908 | ||
6d6a48e5 | 909 | if ((frame->curline + 1) >= frame->frmheight) |
5490a7cb | 910 | return parse_state_next_frame; |
781aa1d1 | 911 | |
52cb0bf2 | 912 | block_split = (pixel_per_line%y_block_size) ? 1 : 0; /* are some blocks splitted into different lines? */ |
781aa1d1 MCC |
913 | |
914 | y_odd_offset = (pixel_per_line / y_block_size) * (y_block_size + uv_block_size) | |
915 | + block_split * uv_block_size; | |
916 | ||
917 | scratch_set_extra_ptr(usbvision, &y_ptr, y_odd_offset); | |
918 | scratch_set_extra_ptr(usbvision, &u_ptr, y_block_size); | |
919 | scratch_set_extra_ptr(usbvision, &v_ptr, y_odd_offset | |
920 | + (4 - block_split) * sub_block_size); | |
921 | ||
6d6a48e5 HV |
922 | for (block = 0; block < (pixel_per_line / sub_block_size); block++) { |
923 | for (pixel = 0; pixel < sub_block_size; pixel += 2) { | |
781aa1d1 MCC |
924 | scratch_get(usbvision, &y[0], 2); |
925 | scratch_get_extra(usbvision, &u, &u_ptr, 1); | |
926 | scratch_get_extra(usbvision, &v, &v_ptr, 1); | |
927 | ||
52cb0bf2 | 928 | /* I don't use the YUV_TO_RGB macro for better performance */ |
781aa1d1 MCC |
929 | v_ = v - 128; |
930 | u_ = u - 128; | |
6d6a48e5 HV |
931 | vb = 132252 * v_; |
932 | uvg = -53281 * u_ - 25625 * v_; | |
781aa1d1 MCC |
933 | ur = 104595 * u_; |
934 | ||
6d6a48e5 | 935 | if (frame->v4l2_format.format == V4L2_PIX_FMT_YUYV) { |
781aa1d1 MCC |
936 | *f_even++ = y[0]; |
937 | *f_even++ = v; | |
6d6a48e5 | 938 | } else { |
781aa1d1 MCC |
939 | y_ = 76284 * (y[0] - 16); |
940 | ||
941 | b_ = (y_ + vb) >> 16; | |
6d6a48e5 | 942 | g_ = (y_ + uvg) >> 16; |
781aa1d1 MCC |
943 | r_ = (y_ + ur) >> 16; |
944 | ||
945 | switch (frame->v4l2_format.format) { | |
6200bbaa TM |
946 | case V4L2_PIX_FMT_RGB565: |
947 | g = LIMIT_RGB(g_); | |
948 | *f_even++ = | |
949 | (0x1F & LIMIT_RGB(r_)) | | |
950 | (0xE0 & (g << 5)); | |
951 | *f_even++ = | |
952 | (0x07 & (g >> 3)) | | |
953 | (0xF8 & LIMIT_RGB(b_)); | |
954 | break; | |
955 | case V4L2_PIX_FMT_RGB24: | |
956 | *f_even++ = LIMIT_RGB(r_); | |
957 | *f_even++ = LIMIT_RGB(g_); | |
958 | *f_even++ = LIMIT_RGB(b_); | |
959 | break; | |
960 | case V4L2_PIX_FMT_RGB32: | |
961 | *f_even++ = LIMIT_RGB(r_); | |
962 | *f_even++ = LIMIT_RGB(g_); | |
963 | *f_even++ = LIMIT_RGB(b_); | |
964 | f_even++; | |
965 | break; | |
966 | case V4L2_PIX_FMT_RGB555: | |
967 | g = LIMIT_RGB(g_); | |
968 | *f_even++ = (0x1F & LIMIT_RGB(r_)) | | |
969 | (0xE0 & (g << 5)); | |
970 | *f_even++ = (0x03 & (g >> 3)) | | |
971 | (0x7C & (LIMIT_RGB(b_) << 2)); | |
972 | break; | |
781aa1d1 MCC |
973 | } |
974 | } | |
975 | clipmask_even_index += clipmask_add; | |
976 | f_even += stretch_bytes; | |
977 | ||
6d6a48e5 | 978 | if (frame->v4l2_format.format == V4L2_PIX_FMT_YUYV) { |
781aa1d1 MCC |
979 | *f_even++ = y[1]; |
980 | *f_even++ = u; | |
6d6a48e5 | 981 | } else { |
781aa1d1 MCC |
982 | y_ = 76284 * (y[1] - 16); |
983 | ||
984 | b_ = (y_ + vb) >> 16; | |
6d6a48e5 | 985 | g_ = (y_ + uvg) >> 16; |
781aa1d1 MCC |
986 | r_ = (y_ + ur) >> 16; |
987 | ||
988 | switch (frame->v4l2_format.format) { | |
6200bbaa TM |
989 | case V4L2_PIX_FMT_RGB565: |
990 | g = LIMIT_RGB(g_); | |
991 | *f_even++ = | |
992 | (0x1F & LIMIT_RGB(r_)) | | |
993 | (0xE0 & (g << 5)); | |
994 | *f_even++ = | |
995 | (0x07 & (g >> 3)) | | |
996 | (0xF8 & LIMIT_RGB(b_)); | |
997 | break; | |
998 | case V4L2_PIX_FMT_RGB24: | |
999 | *f_even++ = LIMIT_RGB(r_); | |
1000 | *f_even++ = LIMIT_RGB(g_); | |
1001 | *f_even++ = LIMIT_RGB(b_); | |
1002 | break; | |
1003 | case V4L2_PIX_FMT_RGB32: | |
1004 | *f_even++ = LIMIT_RGB(r_); | |
1005 | *f_even++ = LIMIT_RGB(g_); | |
1006 | *f_even++ = LIMIT_RGB(b_); | |
1007 | f_even++; | |
1008 | break; | |
1009 | case V4L2_PIX_FMT_RGB555: | |
1010 | g = LIMIT_RGB(g_); | |
1011 | *f_even++ = (0x1F & LIMIT_RGB(r_)) | | |
1012 | (0xE0 & (g << 5)); | |
1013 | *f_even++ = (0x03 & (g >> 3)) | | |
1014 | (0x7C & (LIMIT_RGB(b_) << 2)); | |
1015 | break; | |
781aa1d1 MCC |
1016 | } |
1017 | } | |
1018 | clipmask_even_index += clipmask_add; | |
1019 | f_even += stretch_bytes; | |
1020 | ||
1021 | scratch_get_extra(usbvision, &y[0], &y_ptr, 2); | |
1022 | ||
6d6a48e5 | 1023 | if (frame->v4l2_format.format == V4L2_PIX_FMT_YUYV) { |
781aa1d1 MCC |
1024 | *f_odd++ = y[0]; |
1025 | *f_odd++ = v; | |
6d6a48e5 | 1026 | } else { |
781aa1d1 MCC |
1027 | y_ = 76284 * (y[0] - 16); |
1028 | ||
1029 | b_ = (y_ + vb) >> 16; | |
6d6a48e5 | 1030 | g_ = (y_ + uvg) >> 16; |
781aa1d1 MCC |
1031 | r_ = (y_ + ur) >> 16; |
1032 | ||
1033 | switch (frame->v4l2_format.format) { | |
6200bbaa TM |
1034 | case V4L2_PIX_FMT_RGB565: |
1035 | g = LIMIT_RGB(g_); | |
1036 | *f_odd++ = | |
1037 | (0x1F & LIMIT_RGB(r_)) | | |
1038 | (0xE0 & (g << 5)); | |
1039 | *f_odd++ = | |
1040 | (0x07 & (g >> 3)) | | |
1041 | (0xF8 & LIMIT_RGB(b_)); | |
1042 | break; | |
1043 | case V4L2_PIX_FMT_RGB24: | |
1044 | *f_odd++ = LIMIT_RGB(r_); | |
1045 | *f_odd++ = LIMIT_RGB(g_); | |
1046 | *f_odd++ = LIMIT_RGB(b_); | |
1047 | break; | |
1048 | case V4L2_PIX_FMT_RGB32: | |
1049 | *f_odd++ = LIMIT_RGB(r_); | |
1050 | *f_odd++ = LIMIT_RGB(g_); | |
1051 | *f_odd++ = LIMIT_RGB(b_); | |
1052 | f_odd++; | |
1053 | break; | |
1054 | case V4L2_PIX_FMT_RGB555: | |
1055 | g = LIMIT_RGB(g_); | |
1056 | *f_odd++ = (0x1F & LIMIT_RGB(r_)) | | |
1057 | (0xE0 & (g << 5)); | |
1058 | *f_odd++ = (0x03 & (g >> 3)) | | |
1059 | (0x7C & (LIMIT_RGB(b_) << 2)); | |
1060 | break; | |
781aa1d1 MCC |
1061 | } |
1062 | } | |
1063 | clipmask_odd_index += clipmask_add; | |
1064 | f_odd += stretch_bytes; | |
1065 | ||
6d6a48e5 | 1066 | if (frame->v4l2_format.format == V4L2_PIX_FMT_YUYV) { |
781aa1d1 MCC |
1067 | *f_odd++ = y[1]; |
1068 | *f_odd++ = u; | |
6d6a48e5 | 1069 | } else { |
781aa1d1 MCC |
1070 | y_ = 76284 * (y[1] - 16); |
1071 | ||
1072 | b_ = (y_ + vb) >> 16; | |
6d6a48e5 | 1073 | g_ = (y_ + uvg) >> 16; |
781aa1d1 MCC |
1074 | r_ = (y_ + ur) >> 16; |
1075 | ||
1076 | switch (frame->v4l2_format.format) { | |
6200bbaa TM |
1077 | case V4L2_PIX_FMT_RGB565: |
1078 | g = LIMIT_RGB(g_); | |
1079 | *f_odd++ = | |
1080 | (0x1F & LIMIT_RGB(r_)) | | |
1081 | (0xE0 & (g << 5)); | |
1082 | *f_odd++ = | |
1083 | (0x07 & (g >> 3)) | | |
1084 | (0xF8 & LIMIT_RGB(b_)); | |
1085 | break; | |
1086 | case V4L2_PIX_FMT_RGB24: | |
1087 | *f_odd++ = LIMIT_RGB(r_); | |
1088 | *f_odd++ = LIMIT_RGB(g_); | |
1089 | *f_odd++ = LIMIT_RGB(b_); | |
1090 | break; | |
1091 | case V4L2_PIX_FMT_RGB32: | |
1092 | *f_odd++ = LIMIT_RGB(r_); | |
1093 | *f_odd++ = LIMIT_RGB(g_); | |
1094 | *f_odd++ = LIMIT_RGB(b_); | |
1095 | f_odd++; | |
1096 | break; | |
1097 | case V4L2_PIX_FMT_RGB555: | |
1098 | g = LIMIT_RGB(g_); | |
1099 | *f_odd++ = (0x1F & LIMIT_RGB(r_)) | | |
1100 | (0xE0 & (g << 5)); | |
1101 | *f_odd++ = (0x03 & (g >> 3)) | | |
1102 | (0x7C & (LIMIT_RGB(b_) << 2)); | |
1103 | break; | |
781aa1d1 MCC |
1104 | } |
1105 | } | |
1106 | clipmask_odd_index += clipmask_add; | |
1107 | f_odd += stretch_bytes; | |
1108 | } | |
1109 | ||
6d6a48e5 | 1110 | scratch_rm_old(usbvision, y_step[block % y_step_size] * sub_block_size); |
781aa1d1 MCC |
1111 | scratch_inc_extra_ptr(&y_ptr, y_step[(block + 2 * block_split) % y_step_size] |
1112 | * sub_block_size); | |
1113 | scratch_inc_extra_ptr(&u_ptr, uv_step[block % uv_step_size] | |
1114 | * sub_block_size); | |
1115 | scratch_inc_extra_ptr(&v_ptr, uv_step[(block + 2 * block_split) % uv_step_size] | |
1116 | * sub_block_size); | |
1117 | } | |
1118 | ||
1119 | scratch_rm_old(usbvision, pixel_per_line * 3 / 2 | |
1120 | + block_split * sub_block_size); | |
1121 | ||
1122 | frame->curline += 2 * usbvision->stretch_height; | |
1123 | *pcopylen += frame->v4l2_linesize * 2 * usbvision->stretch_height; | |
1124 | ||
1125 | if (frame->curline >= frame->frmheight) | |
5490a7cb | 1126 | return parse_state_next_frame; |
6d6a48e5 | 1127 | return parse_state_continue; |
781aa1d1 MCC |
1128 | } |
1129 | ||
1130 | /* | |
1131 | * usbvision_parse_data() | |
1132 | * | |
1133 | * Generic routine to parse the scratch buffer. It employs either | |
1134 | * usbvision_find_header() or usbvision_parse_lines() to do most | |
1135 | * of work. | |
1136 | * | |
1137 | */ | |
1138 | static void usbvision_parse_data(struct usb_usbvision *usbvision) | |
1139 | { | |
1140 | struct usbvision_frame *frame; | |
5490a7cb | 1141 | enum parse_state newstate; |
781aa1d1 | 1142 | long copylen = 0; |
f2242ee5 | 1143 | unsigned long lock_flags; |
781aa1d1 | 1144 | |
5490a7cb | 1145 | frame = usbvision->cur_frame; |
781aa1d1 MCC |
1146 | |
1147 | PDEBUG(DBG_PARSE, "parsing len=%d\n", scratch_len(usbvision)); | |
1148 | ||
781aa1d1 | 1149 | while (1) { |
5490a7cb | 1150 | newstate = parse_state_out; |
781aa1d1 | 1151 | if (scratch_len(usbvision)) { |
5490a7cb | 1152 | if (frame->scanstate == scan_state_scanning) { |
781aa1d1 | 1153 | newstate = usbvision_find_header(usbvision); |
6d6a48e5 HV |
1154 | } else if (frame->scanstate == scan_state_lines) { |
1155 | if (usbvision->isoc_mode == ISOC_MODE_YUV420) | |
781aa1d1 | 1156 | newstate = usbvision_parse_lines_420(usbvision, ©len); |
6d6a48e5 | 1157 | else if (usbvision->isoc_mode == ISOC_MODE_YUV422) |
781aa1d1 | 1158 | newstate = usbvision_parse_lines_422(usbvision, ©len); |
6d6a48e5 | 1159 | else if (usbvision->isoc_mode == ISOC_MODE_COMPRESS) |
781aa1d1 | 1160 | newstate = usbvision_parse_compress(usbvision, ©len); |
781aa1d1 MCC |
1161 | } |
1162 | } | |
6d6a48e5 | 1163 | if (newstate == parse_state_continue) |
781aa1d1 | 1164 | continue; |
6d6a48e5 | 1165 | if ((newstate == parse_state_next_frame) || (newstate == parse_state_out)) |
781aa1d1 | 1166 | break; |
6d6a48e5 | 1167 | return; /* parse_state_end_parse */ |
781aa1d1 MCC |
1168 | } |
1169 | ||
5490a7cb HV |
1170 | if (newstate == parse_state_next_frame) { |
1171 | frame->grabstate = frame_state_done; | |
781aa1d1 MCC |
1172 | do_gettimeofday(&(frame->timestamp)); |
1173 | frame->sequence = usbvision->frame_num; | |
781aa1d1 | 1174 | |
483dfdb6 TM |
1175 | spin_lock_irqsave(&usbvision->queue_lock, lock_flags); |
1176 | list_move_tail(&(frame->frame), &usbvision->outqueue); | |
5490a7cb | 1177 | usbvision->cur_frame = NULL; |
483dfdb6 TM |
1178 | spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags); |
1179 | ||
1180 | usbvision->frame_num++; | |
781aa1d1 MCC |
1181 | |
1182 | /* This will cause the process to request another frame. */ | |
f2242ee5 TM |
1183 | if (waitqueue_active(&usbvision->wait_frame)) { |
1184 | PDEBUG(DBG_PARSE, "Wake up !"); | |
1185 | wake_up_interruptible(&usbvision->wait_frame); | |
781aa1d1 | 1186 | } |
6d6a48e5 | 1187 | } else { |
5490a7cb | 1188 | frame->grabstate = frame_state_grabbing; |
6d6a48e5 | 1189 | } |
781aa1d1 MCC |
1190 | |
1191 | /* Update the frame's uncompressed length. */ | |
1192 | frame->scanlength += copylen; | |
1193 | } | |
1194 | ||
1195 | ||
1196 | /* | |
1197 | * Make all of the blocks of data contiguous | |
1198 | */ | |
1199 | static int usbvision_compress_isochronous(struct usb_usbvision *usbvision, | |
f2242ee5 | 1200 | struct urb *urb) |
781aa1d1 MCC |
1201 | { |
1202 | unsigned char *packet_data; | |
1203 | int i, totlen = 0; | |
1204 | ||
1205 | for (i = 0; i < urb->number_of_packets; i++) { | |
1206 | int packet_len = urb->iso_frame_desc[i].actual_length; | |
1207 | int packet_stat = urb->iso_frame_desc[i].status; | |
1208 | ||
1209 | packet_data = urb->transfer_buffer + urb->iso_frame_desc[i].offset; | |
1210 | ||
1211 | /* Detect and ignore errored packets */ | |
52cb0bf2 | 1212 | if (packet_stat) { /* packet_stat != 0 ????????????? */ |
781aa1d1 | 1213 | PDEBUG(DBG_ISOC, "data error: [%d] len=%d, status=%X", i, packet_len, packet_stat); |
5490a7cb | 1214 | usbvision->isoc_err_count++; |
781aa1d1 MCC |
1215 | continue; |
1216 | } | |
1217 | ||
1218 | /* Detect and ignore empty packets */ | |
1219 | if (packet_len < 0) { | |
1220 | PDEBUG(DBG_ISOC, "error packet [%d]", i); | |
5490a7cb | 1221 | usbvision->isoc_skip_count++; |
781aa1d1 | 1222 | continue; |
6d6a48e5 | 1223 | } else if (packet_len == 0) { /* Frame end ????? */ |
781aa1d1 | 1224 | PDEBUG(DBG_ISOC, "null packet [%d]", i); |
6d6a48e5 | 1225 | usbvision->isocstate = isoc_state_no_frame; |
5490a7cb | 1226 | usbvision->isoc_skip_count++; |
781aa1d1 | 1227 | continue; |
6d6a48e5 | 1228 | } else if (packet_len > usbvision->isoc_packet_size) { |
5490a7cb HV |
1229 | PDEBUG(DBG_ISOC, "packet[%d] > isoc_packet_size", i); |
1230 | usbvision->isoc_skip_count++; | |
781aa1d1 MCC |
1231 | continue; |
1232 | } | |
1233 | ||
1234 | PDEBUG(DBG_ISOC, "packet ok [%d] len=%d", i, packet_len); | |
1235 | ||
6d6a48e5 HV |
1236 | if (usbvision->isocstate == isoc_state_no_frame) { /* new frame begins */ |
1237 | usbvision->isocstate = isoc_state_in_frame; | |
781aa1d1 MCC |
1238 | scratch_mark_header(usbvision); |
1239 | usbvision_measure_bandwidth(usbvision); | |
1240 | PDEBUG(DBG_ISOC, "packet with header"); | |
1241 | } | |
1242 | ||
1243 | /* | |
1244 | * If usbvision continues to feed us with data but there is no | |
1245 | * consumption (if, for example, V4L client fell asleep) we | |
1246 | * may overflow the buffer. We have to move old data over to | |
1247 | * free room for new data. This is bad for old data. If we | |
1248 | * just drop new data then it's bad for new data... choose | |
1249 | * your favorite evil here. | |
1250 | */ | |
1251 | if (scratch_free(usbvision) < packet_len) { | |
781aa1d1 MCC |
1252 | usbvision->scratch_ovf_count++; |
1253 | PDEBUG(DBG_ISOC, "scratch buf overflow! scr_len: %d, n: %d", | |
1254 | scratch_len(usbvision), packet_len); | |
1255 | scratch_rm_old(usbvision, packet_len - scratch_free(usbvision)); | |
1256 | } | |
1257 | ||
1258 | /* Now we know that there is enough room in scratch buffer */ | |
1259 | scratch_put(usbvision, packet_data, packet_len); | |
1260 | totlen += packet_len; | |
5490a7cb HV |
1261 | usbvision->isoc_data_count += packet_len; |
1262 | usbvision->isoc_packet_count++; | |
781aa1d1 MCC |
1263 | } |
1264 | #if ENABLE_HEXDUMP | |
1265 | if (totlen > 0) { | |
ff699e6b | 1266 | static int foo; |
6d6a48e5 | 1267 | |
781aa1d1 MCC |
1268 | if (foo < 1) { |
1269 | printk(KERN_DEBUG "+%d.\n", usbvision->scratchlen); | |
1270 | usbvision_hexdump(data0, (totlen > 64) ? 64 : totlen); | |
1271 | ++foo; | |
1272 | } | |
1273 | } | |
1274 | #endif | |
6d6a48e5 | 1275 | return totlen; |
781aa1d1 MCC |
1276 | } |
1277 | ||
5490a7cb | 1278 | static void usbvision_isoc_irq(struct urb *urb) |
781aa1d1 | 1279 | { |
5490a7cb | 1280 | int err_code = 0; |
f2242ee5 TM |
1281 | int len; |
1282 | struct usb_usbvision *usbvision = urb->context; | |
1283 | int i; | |
5490a7cb | 1284 | unsigned long start_time = jiffies; |
f2242ee5 | 1285 | struct usbvision_frame **f; |
781aa1d1 | 1286 | |
f2242ee5 TM |
1287 | /* We don't want to do anything if we are about to be removed! */ |
1288 | if (!USBVISION_IS_OPERATIONAL(usbvision)) | |
1289 | return; | |
781aa1d1 | 1290 | |
fe818d1d | 1291 | /* any urb with wrong status is ignored without acknowledgement */ |
6d6a48e5 | 1292 | if (urb->status == -ENOENT) |
fe818d1d | 1293 | return; |
fe818d1d | 1294 | |
5490a7cb | 1295 | f = &usbvision->cur_frame; |
781aa1d1 | 1296 | |
f2242ee5 | 1297 | /* Manage streaming interruption */ |
5490a7cb HV |
1298 | if (usbvision->streaming == stream_interrupt) { |
1299 | usbvision->streaming = stream_idle; | |
f2242ee5 | 1300 | if ((*f)) { |
5490a7cb HV |
1301 | (*f)->grabstate = frame_state_ready; |
1302 | (*f)->scanstate = scan_state_scanning; | |
f2242ee5 TM |
1303 | } |
1304 | PDEBUG(DBG_IRQ, "stream interrupted"); | |
1305 | wake_up_interruptible(&usbvision->wait_stream); | |
1306 | } | |
781aa1d1 | 1307 | |
f2242ee5 TM |
1308 | /* Copy the data received into our scratch buffer */ |
1309 | len = usbvision_compress_isochronous(usbvision, urb); | |
781aa1d1 | 1310 | |
5490a7cb | 1311 | usbvision->isoc_urb_count++; |
f2242ee5 | 1312 | usbvision->urb_length = len; |
781aa1d1 | 1313 | |
5490a7cb | 1314 | if (usbvision->streaming == stream_on) { |
f2242ee5 | 1315 | /* If we collected enough data let's parse! */ |
6d6a48e5 HV |
1316 | if (scratch_len(usbvision) > USBVISION_HEADER_LENGTH && |
1317 | !list_empty(&(usbvision->inqueue))) { | |
fe818d1d TM |
1318 | if (!(*f)) { |
1319 | (*f) = list_entry(usbvision->inqueue.next, | |
1320 | struct usbvision_frame, | |
1321 | frame); | |
f2242ee5 | 1322 | } |
fe818d1d | 1323 | usbvision_parse_data(usbvision); |
6d6a48e5 | 1324 | } else { |
52cb0bf2 | 1325 | /* If we don't have a frame |
fe818d1d TM |
1326 | we're current working on, complain */ |
1327 | PDEBUG(DBG_IRQ, | |
1328 | "received data, but no one needs it"); | |
1329 | scratch_reset(usbvision); | |
781aa1d1 | 1330 | } |
6d6a48e5 | 1331 | } else { |
40bad678 TM |
1332 | PDEBUG(DBG_IRQ, "received data, but no one needs it"); |
1333 | scratch_reset(usbvision); | |
1334 | } | |
f2242ee5 | 1335 | |
5490a7cb | 1336 | usbvision->time_in_irq += jiffies - start_time; |
f2242ee5 TM |
1337 | |
1338 | for (i = 0; i < USBVISION_URB_FRAMES; i++) { | |
1339 | urb->iso_frame_desc[i].status = 0; | |
1340 | urb->iso_frame_desc[i].actual_length = 0; | |
1341 | } | |
1342 | ||
1343 | urb->status = 0; | |
1344 | urb->dev = usbvision->dev; | |
6d6a48e5 | 1345 | err_code = usb_submit_urb(urb, GFP_ATOMIC); |
f2242ee5 | 1346 | |
6d6a48e5 | 1347 | if (err_code) { |
be9ed511 MCC |
1348 | dev_err(&usbvision->dev->dev, |
1349 | "%s: usb_submit_urb failed: error %d\n", | |
5490a7cb | 1350 | __func__, err_code); |
fe818d1d | 1351 | } |
f2242ee5 | 1352 | |
781aa1d1 MCC |
1353 | return; |
1354 | } | |
1355 | ||
1356 | /*************************************/ | |
1357 | /* Low level usbvision access functions */ | |
1358 | /*************************************/ | |
1359 | ||
1360 | /* | |
1361 | * usbvision_read_reg() | |
1362 | * | |
1363 | * return < 0 -> Error | |
1364 | * >= 0 -> Data | |
1365 | */ | |
1366 | ||
483dfdb6 | 1367 | int usbvision_read_reg(struct usb_usbvision *usbvision, unsigned char reg) |
781aa1d1 | 1368 | { |
5490a7cb | 1369 | int err_code = 0; |
781aa1d1 MCC |
1370 | unsigned char buffer[1]; |
1371 | ||
1372 | if (!USBVISION_IS_OPERATIONAL(usbvision)) | |
1373 | return -1; | |
1374 | ||
5490a7cb | 1375 | err_code = usb_control_msg(usbvision->dev, usb_rcvctrlpipe(usbvision->dev, 1), |
781aa1d1 MCC |
1376 | USBVISION_OP_CODE, |
1377 | USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_ENDPOINT, | |
1378 | 0, (__u16) reg, buffer, 1, HZ); | |
1379 | ||
5490a7cb | 1380 | if (err_code < 0) { |
be9ed511 | 1381 | dev_err(&usbvision->dev->dev, |
5490a7cb HV |
1382 | "%s: failed: error %d\n", __func__, err_code); |
1383 | return err_code; | |
781aa1d1 MCC |
1384 | } |
1385 | return buffer[0]; | |
1386 | } | |
1387 | ||
1388 | /* | |
1389 | * usbvision_write_reg() | |
1390 | * | |
1391 | * return 1 -> Reg written | |
1392 | * 0 -> usbvision is not yet ready | |
1393 | * -1 -> Something went wrong | |
1394 | */ | |
1395 | ||
483dfdb6 | 1396 | int usbvision_write_reg(struct usb_usbvision *usbvision, unsigned char reg, |
781aa1d1 MCC |
1397 | unsigned char value) |
1398 | { | |
5490a7cb | 1399 | int err_code = 0; |
781aa1d1 MCC |
1400 | |
1401 | if (!USBVISION_IS_OPERATIONAL(usbvision)) | |
1402 | return 0; | |
1403 | ||
5490a7cb | 1404 | err_code = usb_control_msg(usbvision->dev, usb_sndctrlpipe(usbvision->dev, 1), |
781aa1d1 MCC |
1405 | USBVISION_OP_CODE, |
1406 | USB_DIR_OUT | USB_TYPE_VENDOR | | |
1407 | USB_RECIP_ENDPOINT, 0, (__u16) reg, &value, 1, HZ); | |
1408 | ||
5490a7cb | 1409 | if (err_code < 0) { |
be9ed511 | 1410 | dev_err(&usbvision->dev->dev, |
5490a7cb | 1411 | "%s: failed: error %d\n", __func__, err_code); |
781aa1d1 | 1412 | } |
5490a7cb | 1413 | return err_code; |
781aa1d1 MCC |
1414 | } |
1415 | ||
1416 | ||
5490a7cb | 1417 | static void usbvision_ctrl_urb_complete(struct urb *urb) |
781aa1d1 MCC |
1418 | { |
1419 | struct usb_usbvision *usbvision = (struct usb_usbvision *)urb->context; | |
1420 | ||
1421 | PDEBUG(DBG_IRQ, ""); | |
5490a7cb | 1422 | usbvision->ctrl_urb_busy = 0; |
6d6a48e5 | 1423 | if (waitqueue_active(&usbvision->ctrl_urb_wq)) |
5490a7cb | 1424 | wake_up_interruptible(&usbvision->ctrl_urb_wq); |
781aa1d1 MCC |
1425 | } |
1426 | ||
1427 | ||
6d6a48e5 HV |
1428 | static int usbvision_write_reg_irq(struct usb_usbvision *usbvision, int address, |
1429 | unsigned char *data, int len) | |
781aa1d1 | 1430 | { |
5490a7cb | 1431 | int err_code = 0; |
781aa1d1 MCC |
1432 | |
1433 | PDEBUG(DBG_IRQ, ""); | |
6d6a48e5 | 1434 | if (len > 8) |
781aa1d1 | 1435 | return -EFAULT; |
6d6a48e5 | 1436 | if (usbvision->ctrl_urb_busy) |
781aa1d1 | 1437 | return -EBUSY; |
5490a7cb | 1438 | usbvision->ctrl_urb_busy = 1; |
781aa1d1 | 1439 | |
5490a7cb HV |
1440 | usbvision->ctrl_urb_setup.bRequestType = USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_ENDPOINT; |
1441 | usbvision->ctrl_urb_setup.bRequest = USBVISION_OP_CODE; | |
1442 | usbvision->ctrl_urb_setup.wValue = 0; | |
1443 | usbvision->ctrl_urb_setup.wIndex = cpu_to_le16(address); | |
1444 | usbvision->ctrl_urb_setup.wLength = cpu_to_le16(len); | |
6d6a48e5 | 1445 | usb_fill_control_urb(usbvision->ctrl_urb, usbvision->dev, |
781aa1d1 | 1446 | usb_sndctrlpipe(usbvision->dev, 1), |
5490a7cb HV |
1447 | (unsigned char *)&usbvision->ctrl_urb_setup, |
1448 | (void *)usbvision->ctrl_urb_buffer, len, | |
1449 | usbvision_ctrl_urb_complete, | |
781aa1d1 MCC |
1450 | (void *)usbvision); |
1451 | ||
5490a7cb | 1452 | memcpy(usbvision->ctrl_urb_buffer, data, len); |
781aa1d1 | 1453 | |
5490a7cb HV |
1454 | err_code = usb_submit_urb(usbvision->ctrl_urb, GFP_ATOMIC); |
1455 | if (err_code < 0) { | |
52cb0bf2 | 1456 | /* error in usb_submit_urb() */ |
5490a7cb | 1457 | usbvision->ctrl_urb_busy = 0; |
781aa1d1 | 1458 | } |
5490a7cb HV |
1459 | PDEBUG(DBG_IRQ, "submit %d byte: error %d", len, err_code); |
1460 | return err_code; | |
781aa1d1 MCC |
1461 | } |
1462 | ||
1463 | ||
781aa1d1 MCC |
1464 | static int usbvision_init_compression(struct usb_usbvision *usbvision) |
1465 | { | |
5490a7cb HV |
1466 | int err_code = 0; |
1467 | ||
1468 | usbvision->last_isoc_frame_num = -1; | |
1469 | usbvision->isoc_data_count = 0; | |
1470 | usbvision->isoc_packet_count = 0; | |
1471 | usbvision->isoc_skip_count = 0; | |
1472 | usbvision->compr_level = 50; | |
1473 | usbvision->last_compr_level = -1; | |
1474 | usbvision->isoc_urb_count = 0; | |
1475 | usbvision->request_intra = 1; | |
1476 | usbvision->isoc_measure_bandwidth_count = 0; | |
1477 | ||
1478 | return err_code; | |
781aa1d1 MCC |
1479 | } |
1480 | ||
1481 | /* this function measures the used bandwidth since last call | |
1482 | * return: 0 : no error | |
5490a7cb | 1483 | * sets used_bandwidth to 1-100 : 1-100% of full bandwidth resp. to isoc_packet_size |
781aa1d1 | 1484 | */ |
6d6a48e5 | 1485 | static int usbvision_measure_bandwidth(struct usb_usbvision *usbvision) |
781aa1d1 | 1486 | { |
5490a7cb HV |
1487 | int err_code = 0; |
1488 | ||
52cb0bf2 | 1489 | if (usbvision->isoc_measure_bandwidth_count < 2) { /* this gives an average bandwidth of 3 frames */ |
5490a7cb HV |
1490 | usbvision->isoc_measure_bandwidth_count++; |
1491 | return err_code; | |
1492 | } | |
1493 | if ((usbvision->isoc_packet_size > 0) && (usbvision->isoc_packet_count > 0)) { | |
1494 | usbvision->used_bandwidth = usbvision->isoc_data_count / | |
1495 | (usbvision->isoc_packet_count + usbvision->isoc_skip_count) * | |
1496 | 100 / usbvision->isoc_packet_size; | |
1497 | } | |
1498 | usbvision->isoc_measure_bandwidth_count = 0; | |
1499 | usbvision->isoc_data_count = 0; | |
1500 | usbvision->isoc_packet_count = 0; | |
1501 | usbvision->isoc_skip_count = 0; | |
1502 | return err_code; | |
781aa1d1 MCC |
1503 | } |
1504 | ||
6d6a48e5 | 1505 | static int usbvision_adjust_compression(struct usb_usbvision *usbvision) |
781aa1d1 | 1506 | { |
5490a7cb | 1507 | int err_code = 0; |
781aa1d1 MCC |
1508 | unsigned char buffer[6]; |
1509 | ||
1510 | PDEBUG(DBG_IRQ, ""); | |
5490a7cb HV |
1511 | if ((adjust_compression) && (usbvision->used_bandwidth > 0)) { |
1512 | usbvision->compr_level += (usbvision->used_bandwidth - 90) / 2; | |
1513 | RESTRICT_TO_RANGE(usbvision->compr_level, 0, 100); | |
1514 | if (usbvision->compr_level != usbvision->last_compr_level) { | |
6d6a48e5 HV |
1515 | int distortion; |
1516 | ||
5490a7cb | 1517 | if (usbvision->bridge_type == BRIDGE_NT1004 || usbvision->bridge_type == BRIDGE_NT1005) { |
52cb0bf2 HV |
1518 | buffer[0] = (unsigned char)(4 + 16 * usbvision->compr_level / 100); /* PCM Threshold 1 */ |
1519 | buffer[1] = (unsigned char)(4 + 8 * usbvision->compr_level / 100); /* PCM Threshold 2 */ | |
6d6a48e5 HV |
1520 | distortion = 7 + 248 * usbvision->compr_level / 100; |
1521 | buffer[2] = (unsigned char)(distortion & 0xFF); /* Average distortion Threshold (inter) */ | |
1522 | buffer[3] = (unsigned char)(distortion & 0xFF); /* Average distortion Threshold (intra) */ | |
1523 | distortion = 1 + 42 * usbvision->compr_level / 100; | |
1524 | buffer[4] = (unsigned char)(distortion & 0xFF); /* Maximum distortion Threshold (inter) */ | |
1525 | buffer[5] = (unsigned char)(distortion & 0xFF); /* Maximum distortion Threshold (intra) */ | |
1526 | } else { /* BRIDGE_NT1003 */ | |
52cb0bf2 HV |
1527 | buffer[0] = (unsigned char)(4 + 16 * usbvision->compr_level / 100); /* PCM threshold 1 */ |
1528 | buffer[1] = (unsigned char)(4 + 8 * usbvision->compr_level / 100); /* PCM threshold 2 */ | |
6d6a48e5 HV |
1529 | distortion = 2 + 253 * usbvision->compr_level / 100; |
1530 | buffer[2] = (unsigned char)(distortion & 0xFF); /* distortion threshold bit0-7 */ | |
1531 | buffer[3] = 0; /* (unsigned char)((distortion >> 8) & 0x0F); distortion threshold bit 8-11 */ | |
1532 | distortion = 0 + 43 * usbvision->compr_level / 100; | |
1533 | buffer[4] = (unsigned char)(distortion & 0xFF); /* maximum distortion bit0-7 */ | |
1534 | buffer[5] = 0; /* (unsigned char)((distortion >> 8) & 0x01); maximum distortion bit 8 */ | |
781aa1d1 | 1535 | } |
5490a7cb | 1536 | err_code = usbvision_write_reg_irq(usbvision, USBVISION_PCM_THR1, buffer, 6); |
6d6a48e5 | 1537 | if (err_code == 0) { |
781aa1d1 MCC |
1538 | PDEBUG(DBG_IRQ, "new compr params %#02x %#02x %#02x %#02x %#02x %#02x", buffer[0], |
1539 | buffer[1], buffer[2], buffer[3], buffer[4], buffer[5]); | |
5490a7cb | 1540 | usbvision->last_compr_level = usbvision->compr_level; |
781aa1d1 MCC |
1541 | } |
1542 | } | |
1543 | } | |
5490a7cb | 1544 | return err_code; |
781aa1d1 MCC |
1545 | } |
1546 | ||
6d6a48e5 | 1547 | static int usbvision_request_intra(struct usb_usbvision *usbvision) |
781aa1d1 | 1548 | { |
5490a7cb | 1549 | int err_code = 0; |
781aa1d1 MCC |
1550 | unsigned char buffer[1]; |
1551 | ||
1552 | PDEBUG(DBG_IRQ, ""); | |
5490a7cb | 1553 | usbvision->request_intra = 1; |
781aa1d1 MCC |
1554 | buffer[0] = 1; |
1555 | usbvision_write_reg_irq(usbvision, USBVISION_FORCE_INTRA, buffer, 1); | |
5490a7cb | 1556 | return err_code; |
781aa1d1 MCC |
1557 | } |
1558 | ||
6d6a48e5 | 1559 | static int usbvision_unrequest_intra(struct usb_usbvision *usbvision) |
781aa1d1 | 1560 | { |
5490a7cb | 1561 | int err_code = 0; |
781aa1d1 MCC |
1562 | unsigned char buffer[1]; |
1563 | ||
1564 | PDEBUG(DBG_IRQ, ""); | |
5490a7cb | 1565 | usbvision->request_intra = 0; |
781aa1d1 MCC |
1566 | buffer[0] = 0; |
1567 | usbvision_write_reg_irq(usbvision, USBVISION_FORCE_INTRA, buffer, 1); | |
5490a7cb | 1568 | return err_code; |
781aa1d1 MCC |
1569 | } |
1570 | ||
483dfdb6 TM |
1571 | /******************************* |
1572 | * usbvision utility functions | |
1573 | *******************************/ | |
781aa1d1 | 1574 | |
483dfdb6 | 1575 | int usbvision_power_off(struct usb_usbvision *usbvision) |
781aa1d1 | 1576 | { |
5490a7cb | 1577 | int err_code = 0; |
781aa1d1 MCC |
1578 | |
1579 | PDEBUG(DBG_FUNC, ""); | |
1580 | ||
5490a7cb | 1581 | err_code = usbvision_write_reg(usbvision, USBVISION_PWR_REG, USBVISION_SSPND_EN); |
6d6a48e5 | 1582 | if (err_code == 1) |
781aa1d1 | 1583 | usbvision->power = 0; |
6d6a48e5 | 1584 | PDEBUG(DBG_FUNC, "%s: err_code %d", (err_code != 1) ? "ERROR" : "power is off", err_code); |
5490a7cb | 1585 | return err_code; |
781aa1d1 MCC |
1586 | } |
1587 | ||
240d57bb OZ |
1588 | /* configure webcam image sensor using the serial port */ |
1589 | static int usbvision_init_webcam(struct usb_usbvision *usbvision) | |
1590 | { | |
1591 | int rc; | |
1592 | int i; | |
1593 | static char init_values[38][3] = { | |
1594 | { 0x04, 0x12, 0x08 }, { 0x05, 0xff, 0xc8 }, { 0x06, 0x18, 0x07 }, { 0x07, 0x90, 0x00 }, | |
1595 | { 0x09, 0x00, 0x00 }, { 0x0a, 0x00, 0x00 }, { 0x0b, 0x08, 0x00 }, { 0x0d, 0xcc, 0xcc }, | |
1596 | { 0x0e, 0x13, 0x14 }, { 0x10, 0x9b, 0x83 }, { 0x11, 0x5a, 0x3f }, { 0x12, 0xe4, 0x73 }, | |
1597 | { 0x13, 0x88, 0x84 }, { 0x14, 0x89, 0x80 }, { 0x15, 0x00, 0x20 }, { 0x16, 0x00, 0x00 }, | |
1598 | { 0x17, 0xff, 0xa0 }, { 0x18, 0x6b, 0x20 }, { 0x19, 0x22, 0x40 }, { 0x1a, 0x10, 0x07 }, | |
1599 | { 0x1b, 0x00, 0x47 }, { 0x1c, 0x03, 0xe0 }, { 0x1d, 0x00, 0x00 }, { 0x1e, 0x00, 0x00 }, | |
1600 | { 0x1f, 0x00, 0x00 }, { 0x20, 0x00, 0x00 }, { 0x21, 0x00, 0x00 }, { 0x22, 0x00, 0x00 }, | |
1601 | { 0x23, 0x00, 0x00 }, { 0x24, 0x00, 0x00 }, { 0x25, 0x00, 0x00 }, { 0x26, 0x00, 0x00 }, | |
1602 | { 0x27, 0x00, 0x00 }, { 0x28, 0x00, 0x00 }, { 0x29, 0x00, 0x00 }, { 0x08, 0x80, 0x60 }, | |
1603 | { 0x0f, 0x2d, 0x24 }, { 0x0c, 0x80, 0x80 } | |
1604 | }; | |
1605 | char value[3]; | |
1606 | ||
1607 | /* the only difference between PAL and NTSC init_values */ | |
1608 | if (usbvision_device_data[usbvision->dev_model].video_norm == V4L2_STD_NTSC) | |
1609 | init_values[4][1] = 0x34; | |
1610 | ||
1611 | for (i = 0; i < sizeof(init_values) / 3; i++) { | |
1612 | usbvision_write_reg(usbvision, USBVISION_SER_MODE, USBVISION_SER_MODE_SOFT); | |
1613 | memcpy(value, init_values[i], 3); | |
1614 | rc = usb_control_msg(usbvision->dev, | |
1615 | usb_sndctrlpipe(usbvision->dev, 1), | |
1616 | USBVISION_OP_CODE, | |
1617 | USB_DIR_OUT | USB_TYPE_VENDOR | | |
1618 | USB_RECIP_ENDPOINT, 0, | |
1619 | (__u16) USBVISION_SER_DAT1, value, | |
1620 | 3, HZ); | |
1621 | if (rc < 0) | |
1622 | return rc; | |
1623 | usbvision_write_reg(usbvision, USBVISION_SER_MODE, USBVISION_SER_MODE_SIO); | |
1624 | /* write 3 bytes to the serial port using SIO mode */ | |
1625 | usbvision_write_reg(usbvision, USBVISION_SER_CONT, 3 | 0x10); | |
1626 | usbvision_write_reg(usbvision, USBVISION_IOPIN_REG, 0); | |
1627 | usbvision_write_reg(usbvision, USBVISION_SER_MODE, USBVISION_SER_MODE_SOFT); | |
1628 | usbvision_write_reg(usbvision, USBVISION_IOPIN_REG, USBVISION_IO_2); | |
1629 | usbvision_write_reg(usbvision, USBVISION_SER_MODE, USBVISION_SER_MODE_SOFT | USBVISION_CLK_OUT); | |
1630 | usbvision_write_reg(usbvision, USBVISION_SER_MODE, USBVISION_SER_MODE_SOFT | USBVISION_DAT_IO); | |
1631 | usbvision_write_reg(usbvision, USBVISION_SER_MODE, USBVISION_SER_MODE_SOFT | USBVISION_CLK_OUT | USBVISION_DAT_IO); | |
1632 | } | |
1633 | ||
1634 | return 0; | |
1635 | } | |
1636 | ||
781aa1d1 MCC |
1637 | /* |
1638 | * usbvision_set_video_format() | |
1639 | * | |
1640 | */ | |
1641 | static int usbvision_set_video_format(struct usb_usbvision *usbvision, int format) | |
1642 | { | |
1643 | static const char proc[] = "usbvision_set_video_format"; | |
1644 | int rc; | |
1645 | unsigned char value[2]; | |
1646 | ||
1647 | if (!USBVISION_IS_OPERATIONAL(usbvision)) | |
1648 | return 0; | |
1649 | ||
5490a7cb | 1650 | PDEBUG(DBG_FUNC, "isoc_mode %#02x", format); |
781aa1d1 MCC |
1651 | |
1652 | if ((format != ISOC_MODE_YUV422) | |
1653 | && (format != ISOC_MODE_YUV420) | |
1654 | && (format != ISOC_MODE_COMPRESS)) { | |
1655 | printk(KERN_ERR "usbvision: unknown video format %02x, using default YUV420", | |
1656 | format); | |
1657 | format = ISOC_MODE_YUV420; | |
1658 | } | |
52cb0bf2 HV |
1659 | value[0] = 0x0A; /* TODO: See the effect of the filter */ |
1660 | value[1] = format; /* Sets the VO_MODE register which follows FILT_CONT */ | |
781aa1d1 MCC |
1661 | rc = usb_control_msg(usbvision->dev, usb_sndctrlpipe(usbvision->dev, 1), |
1662 | USBVISION_OP_CODE, | |
1663 | USB_DIR_OUT | USB_TYPE_VENDOR | | |
1664 | USB_RECIP_ENDPOINT, 0, | |
1665 | (__u16) USBVISION_FILT_CONT, value, 2, HZ); | |
1666 | ||
1667 | if (rc < 0) { | |
1668 | printk(KERN_ERR "%s: ERROR=%d. USBVISION stopped - " | |
1669 | "reconnect or reload driver.\n", proc, rc); | |
1670 | } | |
5490a7cb | 1671 | usbvision->isoc_mode = format; |
781aa1d1 MCC |
1672 | return rc; |
1673 | } | |
1674 | ||
1675 | /* | |
1676 | * usbvision_set_output() | |
1677 | * | |
1678 | */ | |
1679 | ||
483dfdb6 TM |
1680 | int usbvision_set_output(struct usb_usbvision *usbvision, int width, |
1681 | int height) | |
781aa1d1 | 1682 | { |
5490a7cb HV |
1683 | int err_code = 0; |
1684 | int usb_width, usb_height; | |
6d6a48e5 | 1685 | unsigned int frame_rate = 0, frame_drop = 0; |
781aa1d1 MCC |
1686 | unsigned char value[4]; |
1687 | ||
6d6a48e5 | 1688 | if (!USBVISION_IS_OPERATIONAL(usbvision)) |
781aa1d1 | 1689 | return 0; |
781aa1d1 MCC |
1690 | |
1691 | if (width > MAX_USB_WIDTH) { | |
5490a7cb | 1692 | usb_width = width / 2; |
781aa1d1 | 1693 | usbvision->stretch_width = 2; |
6d6a48e5 | 1694 | } else { |
5490a7cb | 1695 | usb_width = width; |
781aa1d1 MCC |
1696 | usbvision->stretch_width = 1; |
1697 | } | |
1698 | ||
1699 | if (height > MAX_USB_HEIGHT) { | |
5490a7cb | 1700 | usb_height = height / 2; |
781aa1d1 | 1701 | usbvision->stretch_height = 2; |
6d6a48e5 | 1702 | } else { |
5490a7cb | 1703 | usb_height = height; |
781aa1d1 MCC |
1704 | usbvision->stretch_height = 1; |
1705 | } | |
1706 | ||
5490a7cb HV |
1707 | RESTRICT_TO_RANGE(usb_width, MIN_FRAME_WIDTH, MAX_USB_WIDTH); |
1708 | usb_width &= ~(MIN_FRAME_WIDTH-1); | |
1709 | RESTRICT_TO_RANGE(usb_height, MIN_FRAME_HEIGHT, MAX_USB_HEIGHT); | |
1710 | usb_height &= ~(1); | |
781aa1d1 MCC |
1711 | |
1712 | PDEBUG(DBG_FUNC, "usb %dx%d; screen %dx%d; stretch %dx%d", | |
5490a7cb | 1713 | usb_width, usb_height, width, height, |
781aa1d1 MCC |
1714 | usbvision->stretch_width, usbvision->stretch_height); |
1715 | ||
1716 | /* I'll not rewrite the same values */ | |
5490a7cb | 1717 | if ((usb_width != usbvision->curwidth) || (usb_height != usbvision->curheight)) { |
52cb0bf2 HV |
1718 | value[0] = usb_width & 0xff; /* LSB */ |
1719 | value[1] = (usb_width >> 8) & 0x03; /* MSB */ | |
1720 | value[2] = usb_height & 0xff; /* LSB */ | |
1721 | value[3] = (usb_height >> 8) & 0x03; /* MSB */ | |
781aa1d1 | 1722 | |
5490a7cb | 1723 | err_code = usb_control_msg(usbvision->dev, usb_sndctrlpipe(usbvision->dev, 1), |
781aa1d1 MCC |
1724 | USBVISION_OP_CODE, |
1725 | USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_ENDPOINT, | |
1726 | 0, (__u16) USBVISION_LXSIZE_O, value, 4, HZ); | |
1727 | ||
5490a7cb | 1728 | if (err_code < 0) { |
be9ed511 | 1729 | dev_err(&usbvision->dev->dev, |
5490a7cb HV |
1730 | "%s failed: error %d\n", __func__, err_code); |
1731 | return err_code; | |
781aa1d1 | 1732 | } |
5490a7cb HV |
1733 | usbvision->curwidth = usbvision->stretch_width * usb_width; |
1734 | usbvision->curheight = usbvision->stretch_height * usb_height; | |
781aa1d1 MCC |
1735 | } |
1736 | ||
6d6a48e5 | 1737 | if (usbvision->isoc_mode == ISOC_MODE_YUV422) |
5490a7cb | 1738 | frame_rate = (usbvision->isoc_packet_size * 1000) / (usb_width * usb_height * 2); |
6d6a48e5 | 1739 | else if (usbvision->isoc_mode == ISOC_MODE_YUV420) |
5490a7cb | 1740 | frame_rate = (usbvision->isoc_packet_size * 1000) / ((usb_width * usb_height * 12) / 8); |
6d6a48e5 | 1741 | else |
5490a7cb | 1742 | frame_rate = FRAMERATE_MAX; |
781aa1d1 | 1743 | |
6d6a48e5 | 1744 | if (usbvision->tvnorm_id & V4L2_STD_625_50) |
5490a7cb | 1745 | frame_drop = frame_rate * 32 / 25 - 1; |
6d6a48e5 | 1746 | else if (usbvision->tvnorm_id & V4L2_STD_525_60) |
5490a7cb | 1747 | frame_drop = frame_rate * 32 / 30 - 1; |
781aa1d1 | 1748 | |
5490a7cb | 1749 | RESTRICT_TO_RANGE(frame_drop, FRAMERATE_MIN, FRAMERATE_MAX); |
781aa1d1 | 1750 | |
5490a7cb | 1751 | PDEBUG(DBG_FUNC, "frame_rate %d fps, frame_drop %d", frame_rate, frame_drop); |
781aa1d1 | 1752 | |
6d6a48e5 | 1753 | frame_drop = FRAMERATE_MAX; /* We can allow the maximum here, because dropping is controlled */ |
781aa1d1 | 1754 | |
240d57bb OZ |
1755 | if (usbvision_device_data[usbvision->dev_model].codec == CODEC_WEBCAM) { |
1756 | if (usbvision_device_data[usbvision->dev_model].video_norm == V4L2_STD_PAL) | |
1757 | frame_drop = 25; | |
1758 | else | |
1759 | frame_drop = 30; | |
1760 | } | |
1761 | ||
5490a7cb HV |
1762 | /* frame_drop = 7; => frame_phase = 1, 5, 9, 13, 17, 21, 25, 0, 4, 8, ... |
1763 | => frame_skip = 4; | |
1764 | => frame_rate = (7 + 1) * 25 / 32 = 200 / 32 = 6.25; | |
781aa1d1 | 1765 | |
5490a7cb HV |
1766 | frame_drop = 9; => frame_phase = 1, 5, 8, 11, 14, 17, 21, 24, 27, 1, 4, 8, ... |
1767 | => frame_skip = 4, 3, 3, 3, 3, 4, 3, 3, 3, 3, 4, ... | |
1768 | => frame_rate = (9 + 1) * 25 / 32 = 250 / 32 = 7.8125; | |
781aa1d1 | 1769 | */ |
5490a7cb HV |
1770 | err_code = usbvision_write_reg(usbvision, USBVISION_FRM_RATE, frame_drop); |
1771 | return err_code; | |
781aa1d1 MCC |
1772 | } |
1773 | ||
1774 | ||
483dfdb6 TM |
1775 | /* |
1776 | * usbvision_frames_alloc | |
6f78e186 | 1777 | * allocate the required frames |
483dfdb6 | 1778 | */ |
6f78e186 | 1779 | int usbvision_frames_alloc(struct usb_usbvision *usbvision, int number_of_frames) |
483dfdb6 TM |
1780 | { |
1781 | int i; | |
1782 | ||
52cb0bf2 | 1783 | /* needs to be page aligned cause the buffers can be mapped individually! */ |
6d6a48e5 | 1784 | usbvision->max_frame_size = PAGE_ALIGN(usbvision->curwidth * |
6f78e186 TM |
1785 | usbvision->curheight * |
1786 | usbvision->palette.bytes_per_pixel); | |
483dfdb6 | 1787 | |
6f78e186 TM |
1788 | /* Try to do my best to allocate the frames the user want in the remaining memory */ |
1789 | usbvision->num_frames = number_of_frames; | |
1790 | while (usbvision->num_frames > 0) { | |
1791 | usbvision->fbuf_size = usbvision->num_frames * usbvision->max_frame_size; | |
6d6a48e5 HV |
1792 | usbvision->fbuf = usbvision_rvmalloc(usbvision->fbuf_size); |
1793 | if (usbvision->fbuf) | |
6f78e186 | 1794 | break; |
6f78e186 | 1795 | usbvision->num_frames--; |
483dfdb6 | 1796 | } |
6f78e186 | 1797 | |
483dfdb6 TM |
1798 | spin_lock_init(&usbvision->queue_lock); |
1799 | init_waitqueue_head(&usbvision->wait_frame); | |
1800 | init_waitqueue_head(&usbvision->wait_stream); | |
1801 | ||
1802 | /* Allocate all buffers */ | |
6f78e186 | 1803 | for (i = 0; i < usbvision->num_frames; i++) { |
483dfdb6 | 1804 | usbvision->frame[i].index = i; |
5490a7cb | 1805 | usbvision->frame[i].grabstate = frame_state_unused; |
483dfdb6 TM |
1806 | usbvision->frame[i].data = usbvision->fbuf + |
1807 | i * usbvision->max_frame_size; | |
1808 | /* | |
1809 | * Set default sizes for read operation. | |
1810 | */ | |
1811 | usbvision->stretch_width = 1; | |
1812 | usbvision->stretch_height = 1; | |
1813 | usbvision->frame[i].width = usbvision->curwidth; | |
1814 | usbvision->frame[i].height = usbvision->curheight; | |
1815 | usbvision->frame[i].bytes_read = 0; | |
1816 | } | |
6d6a48e5 HV |
1817 | PDEBUG(DBG_FUNC, "allocated %d frames (%d bytes per frame)", |
1818 | usbvision->num_frames, usbvision->max_frame_size); | |
6f78e186 | 1819 | return usbvision->num_frames; |
483dfdb6 TM |
1820 | } |
1821 | ||
1822 | /* | |
1823 | * usbvision_frames_free | |
1824 | * frees memory allocated for the frames | |
1825 | */ | |
1826 | void usbvision_frames_free(struct usb_usbvision *usbvision) | |
1827 | { | |
1828 | /* Have to free all that memory */ | |
6d6a48e5 | 1829 | PDEBUG(DBG_FUNC, "free %d frames", usbvision->num_frames); |
6f78e186 | 1830 | |
483dfdb6 TM |
1831 | if (usbvision->fbuf != NULL) { |
1832 | usbvision_rvfree(usbvision->fbuf, usbvision->fbuf_size); | |
1833 | usbvision->fbuf = NULL; | |
6f78e186 TM |
1834 | |
1835 | usbvision->num_frames = 0; | |
483dfdb6 TM |
1836 | } |
1837 | } | |
f2242ee5 TM |
1838 | /* |
1839 | * usbvision_empty_framequeues() | |
1840 | * prepare queues for incoming and outgoing frames | |
1841 | */ | |
483dfdb6 | 1842 | void usbvision_empty_framequeues(struct usb_usbvision *usbvision) |
f2242ee5 TM |
1843 | { |
1844 | u32 i; | |
1845 | ||
1846 | INIT_LIST_HEAD(&(usbvision->inqueue)); | |
1847 | INIT_LIST_HEAD(&(usbvision->outqueue)); | |
1848 | ||
1849 | for (i = 0; i < USBVISION_NUMFRAMES; i++) { | |
5490a7cb | 1850 | usbvision->frame[i].grabstate = frame_state_unused; |
f2242ee5 TM |
1851 | usbvision->frame[i].bytes_read = 0; |
1852 | } | |
1853 | } | |
1854 | ||
1855 | /* | |
1856 | * usbvision_stream_interrupt() | |
1857 | * stops streaming | |
1858 | */ | |
483dfdb6 | 1859 | int usbvision_stream_interrupt(struct usb_usbvision *usbvision) |
f2242ee5 TM |
1860 | { |
1861 | int ret = 0; | |
1862 | ||
1863 | /* stop reading from the device */ | |
1864 | ||
5490a7cb | 1865 | usbvision->streaming = stream_interrupt; |
f2242ee5 | 1866 | ret = wait_event_timeout(usbvision->wait_stream, |
5490a7cb | 1867 | (usbvision->streaming == stream_idle), |
f2242ee5 TM |
1868 | msecs_to_jiffies(USBVISION_NUMSBUF*USBVISION_URB_FRAMES)); |
1869 | return ret; | |
1870 | } | |
1871 | ||
781aa1d1 MCC |
1872 | /* |
1873 | * usbvision_set_compress_params() | |
1874 | * | |
1875 | */ | |
1876 | ||
1877 | static int usbvision_set_compress_params(struct usb_usbvision *usbvision) | |
1878 | { | |
1879 | static const char proc[] = "usbvision_set_compresion_params: "; | |
1880 | int rc; | |
1881 | unsigned char value[6]; | |
1882 | ||
52cb0bf2 HV |
1883 | value[0] = 0x0F; /* Intra-Compression cycle */ |
1884 | value[1] = 0x01; /* Reg.45 one line per strip */ | |
1885 | value[2] = 0x00; /* Reg.46 Force intra mode on all new frames */ | |
1886 | value[3] = 0x00; /* Reg.47 FORCE_UP <- 0 normal operation (not force) */ | |
1887 | value[4] = 0xA2; /* Reg.48 BUF_THR I'm not sure if this does something in not compressed mode. */ | |
1888 | value[5] = 0x00; /* Reg.49 DVI_YUV This has nothing to do with compression */ | |
1889 | ||
1890 | /* catched values for NT1004 */ | |
1891 | /* value[0] = 0xFF; Never apply intra mode automatically */ | |
1892 | /* value[1] = 0xF1; Use full frame height for virtual strip width; One line per strip */ | |
1893 | /* value[2] = 0x01; Force intra mode on all new frames */ | |
1894 | /* value[3] = 0x00; Strip size 400 Bytes; do not force up */ | |
1895 | /* value[4] = 0xA2; */ | |
781aa1d1 MCC |
1896 | if (!USBVISION_IS_OPERATIONAL(usbvision)) |
1897 | return 0; | |
1898 | ||
1899 | rc = usb_control_msg(usbvision->dev, usb_sndctrlpipe(usbvision->dev, 1), | |
1900 | USBVISION_OP_CODE, | |
1901 | USB_DIR_OUT | USB_TYPE_VENDOR | | |
1902 | USB_RECIP_ENDPOINT, 0, | |
1903 | (__u16) USBVISION_INTRA_CYC, value, 5, HZ); | |
1904 | ||
1905 | if (rc < 0) { | |
1906 | printk(KERN_ERR "%sERROR=%d. USBVISION stopped - " | |
1907 | "reconnect or reload driver.\n", proc, rc); | |
1908 | return rc; | |
1909 | } | |
1910 | ||
5490a7cb | 1911 | if (usbvision->bridge_type == BRIDGE_NT1004) { |
52cb0bf2 HV |
1912 | value[0] = 20; /* PCM Threshold 1 */ |
1913 | value[1] = 12; /* PCM Threshold 2 */ | |
6d6a48e5 HV |
1914 | value[2] = 255; /* Distortion Threshold inter */ |
1915 | value[3] = 255; /* Distortion Threshold intra */ | |
1916 | value[4] = 43; /* Max Distortion inter */ | |
1917 | value[5] = 43; /* Max Distortion intra */ | |
1918 | } else { | |
52cb0bf2 HV |
1919 | value[0] = 20; /* PCM Threshold 1 */ |
1920 | value[1] = 12; /* PCM Threshold 2 */ | |
6d6a48e5 HV |
1921 | value[2] = 255; /* Distortion Threshold d7-d0 */ |
1922 | value[3] = 0; /* Distortion Threshold d11-d8 */ | |
1923 | value[4] = 43; /* Max Distortion d7-d0 */ | |
1924 | value[5] = 0; /* Max Distortion d8 */ | |
781aa1d1 MCC |
1925 | } |
1926 | ||
1927 | if (!USBVISION_IS_OPERATIONAL(usbvision)) | |
1928 | return 0; | |
1929 | ||
1930 | rc = usb_control_msg(usbvision->dev, usb_sndctrlpipe(usbvision->dev, 1), | |
1931 | USBVISION_OP_CODE, | |
1932 | USB_DIR_OUT | USB_TYPE_VENDOR | | |
1933 | USB_RECIP_ENDPOINT, 0, | |
1934 | (__u16) USBVISION_PCM_THR1, value, 6, HZ); | |
1935 | ||
1936 | if (rc < 0) { | |
1937 | printk(KERN_ERR "%sERROR=%d. USBVISION stopped - " | |
1938 | "reconnect or reload driver.\n", proc, rc); | |
781aa1d1 | 1939 | } |
781aa1d1 MCC |
1940 | return rc; |
1941 | } | |
1942 | ||
1943 | ||
1944 | /* | |
1945 | * usbvision_set_input() | |
1946 | * | |
1947 | * Set the input (saa711x, ...) size x y and other misc input params | |
1948 | * I've no idea if this parameters are right | |
1949 | * | |
1950 | */ | |
483dfdb6 | 1951 | int usbvision_set_input(struct usb_usbvision *usbvision) |
781aa1d1 MCC |
1952 | { |
1953 | static const char proc[] = "usbvision_set_input: "; | |
1954 | int rc; | |
1955 | unsigned char value[8]; | |
1956 | unsigned char dvi_yuv_value; | |
1957 | ||
1958 | if (!USBVISION_IS_OPERATIONAL(usbvision)) | |
1959 | return 0; | |
1960 | ||
1961 | /* Set input format expected from decoder*/ | |
5490a7cb HV |
1962 | if (usbvision_device_data[usbvision->dev_model].vin_reg1_override) { |
1963 | value[0] = usbvision_device_data[usbvision->dev_model].vin_reg1; | |
6d6a48e5 | 1964 | } else if (usbvision_device_data[usbvision->dev_model].codec == CODEC_SAA7113) { |
781aa1d1 MCC |
1965 | /* SAA7113 uses 8 bit output */ |
1966 | value[0] = USBVISION_8_422_SYNC; | |
1967 | } else { | |
1968 | /* I'm sure only about d2-d0 [010] 16 bit 4:2:2 usin sync pulses | |
1969 | * as that is how saa7111 is configured */ | |
1970 | value[0] = USBVISION_16_422_SYNC; | |
1971 | /* | USBVISION_VSNC_POL | USBVISION_VCLK_POL);*/ | |
1972 | } | |
1973 | ||
1974 | rc = usbvision_write_reg(usbvision, USBVISION_VIN_REG1, value[0]); | |
1975 | if (rc < 0) { | |
1976 | printk(KERN_ERR "%sERROR=%d. USBVISION stopped - " | |
1977 | "reconnect or reload driver.\n", proc, rc); | |
1978 | return rc; | |
1979 | } | |
1980 | ||
1981 | ||
5490a7cb | 1982 | if (usbvision->tvnorm_id & V4L2_STD_PAL) { |
781aa1d1 | 1983 | value[0] = 0xC0; |
52cb0bf2 | 1984 | value[1] = 0x02; /* 0x02C0 -> 704 Input video line length */ |
781aa1d1 | 1985 | value[2] = 0x20; |
52cb0bf2 | 1986 | value[3] = 0x01; /* 0x0120 -> 288 Input video n. of lines */ |
781aa1d1 | 1987 | value[4] = 0x60; |
52cb0bf2 | 1988 | value[5] = 0x00; /* 0x0060 -> 96 Input video h offset */ |
781aa1d1 | 1989 | value[6] = 0x16; |
52cb0bf2 | 1990 | value[7] = 0x00; /* 0x0016 -> 22 Input video v offset */ |
5490a7cb | 1991 | } else if (usbvision->tvnorm_id & V4L2_STD_SECAM) { |
781aa1d1 | 1992 | value[0] = 0xC0; |
52cb0bf2 | 1993 | value[1] = 0x02; /* 0x02C0 -> 704 Input video line length */ |
781aa1d1 | 1994 | value[2] = 0x20; |
52cb0bf2 | 1995 | value[3] = 0x01; /* 0x0120 -> 288 Input video n. of lines */ |
781aa1d1 | 1996 | value[4] = 0x01; |
52cb0bf2 | 1997 | value[5] = 0x00; /* 0x0001 -> 01 Input video h offset */ |
781aa1d1 | 1998 | value[6] = 0x01; |
52cb0bf2 | 1999 | value[7] = 0x00; /* 0x0001 -> 01 Input video v offset */ |
781aa1d1 MCC |
2000 | } else { /* V4L2_STD_NTSC */ |
2001 | value[0] = 0xD0; | |
52cb0bf2 | 2002 | value[1] = 0x02; /* 0x02D0 -> 720 Input video line length */ |
781aa1d1 | 2003 | value[2] = 0xF0; |
52cb0bf2 | 2004 | value[3] = 0x00; /* 0x00F0 -> 240 Input video number of lines */ |
781aa1d1 | 2005 | value[4] = 0x50; |
52cb0bf2 | 2006 | value[5] = 0x00; /* 0x0050 -> 80 Input video h offset */ |
781aa1d1 | 2007 | value[6] = 0x10; |
52cb0bf2 | 2008 | value[7] = 0x00; /* 0x0010 -> 16 Input video v offset */ |
781aa1d1 MCC |
2009 | } |
2010 | ||
240d57bb OZ |
2011 | /* webcam is only 480 pixels wide, both PAL and NTSC version */ |
2012 | if (usbvision_device_data[usbvision->dev_model].codec == CODEC_WEBCAM) { | |
2013 | value[0] = 0xe0; | |
2014 | value[1] = 0x01; /* 0x01E0 -> 480 Input video line length */ | |
2015 | } | |
2016 | ||
5490a7cb | 2017 | if (usbvision_device_data[usbvision->dev_model].x_offset >= 0) { |
6d6a48e5 HV |
2018 | value[4] = usbvision_device_data[usbvision->dev_model].x_offset & 0xff; |
2019 | value[5] = (usbvision_device_data[usbvision->dev_model].x_offset & 0x0300) >> 8; | |
781aa1d1 MCC |
2020 | } |
2021 | ||
5490a7cb HV |
2022 | if (adjust_x_offset != -1) { |
2023 | value[4] = adjust_x_offset & 0xff; | |
2024 | value[5] = (adjust_x_offset & 0x0300) >> 8; | |
c6243d9c TM |
2025 | } |
2026 | ||
5490a7cb | 2027 | if (usbvision_device_data[usbvision->dev_model].y_offset >= 0) { |
6d6a48e5 HV |
2028 | value[6] = usbvision_device_data[usbvision->dev_model].y_offset & 0xff; |
2029 | value[7] = (usbvision_device_data[usbvision->dev_model].y_offset & 0x0300) >> 8; | |
781aa1d1 MCC |
2030 | } |
2031 | ||
5490a7cb HV |
2032 | if (adjust_y_offset != -1) { |
2033 | value[6] = adjust_y_offset & 0xff; | |
2034 | value[7] = (adjust_y_offset & 0x0300) >> 8; | |
c6243d9c TM |
2035 | } |
2036 | ||
781aa1d1 MCC |
2037 | rc = usb_control_msg(usbvision->dev, usb_sndctrlpipe(usbvision->dev, 1), |
2038 | USBVISION_OP_CODE, /* USBVISION specific code */ | |
2039 | USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_ENDPOINT, 0, | |
2040 | (__u16) USBVISION_LXSIZE_I, value, 8, HZ); | |
2041 | if (rc < 0) { | |
2042 | printk(KERN_ERR "%sERROR=%d. USBVISION stopped - " | |
2043 | "reconnect or reload driver.\n", proc, rc); | |
2044 | return rc; | |
2045 | } | |
2046 | ||
2047 | ||
2048 | dvi_yuv_value = 0x00; /* U comes after V, Ya comes after U/V, Yb comes after Yb */ | |
2049 | ||
6d6a48e5 | 2050 | if (usbvision_device_data[usbvision->dev_model].dvi_yuv_override) { |
5490a7cb | 2051 | dvi_yuv_value = usbvision_device_data[usbvision->dev_model].dvi_yuv; |
6d6a48e5 HV |
2052 | } else if (usbvision_device_data[usbvision->dev_model].codec == CODEC_SAA7113) { |
2053 | /* This changes as the fine sync control changes. Further investigation necessary */ | |
781aa1d1 MCC |
2054 | dvi_yuv_value = 0x06; |
2055 | } | |
2056 | ||
6d6a48e5 | 2057 | return usbvision_write_reg(usbvision, USBVISION_DVI_YUV, dvi_yuv_value); |
781aa1d1 MCC |
2058 | } |
2059 | ||
2060 | ||
2061 | /* | |
2062 | * usbvision_set_dram_settings() | |
2063 | * | |
2064 | * Set the buffer address needed by the usbvision dram to operate | |
2065 | * This values has been taken with usbsnoop. | |
2066 | * | |
2067 | */ | |
2068 | ||
2069 | static int usbvision_set_dram_settings(struct usb_usbvision *usbvision) | |
2070 | { | |
2071 | int rc; | |
2072 | unsigned char value[8]; | |
2073 | ||
5490a7cb | 2074 | if (usbvision->isoc_mode == ISOC_MODE_COMPRESS) { |
781aa1d1 MCC |
2075 | value[0] = 0x42; |
2076 | value[1] = 0x71; | |
2077 | value[2] = 0xff; | |
2078 | value[3] = 0x00; | |
2079 | value[4] = 0x98; | |
2080 | value[5] = 0xe0; | |
2081 | value[6] = 0x71; | |
2082 | value[7] = 0xff; | |
52cb0bf2 HV |
2083 | /* UR: 0x0E200-0x3FFFF = 204288 Words (1 Word = 2 Byte) */ |
2084 | /* FDL: 0x00000-0x0E099 = 57498 Words */ | |
2085 | /* VDW: 0x0E3FF-0x3FFFF */ | |
6d6a48e5 | 2086 | } else { |
781aa1d1 MCC |
2087 | value[0] = 0x42; |
2088 | value[1] = 0x00; | |
2089 | value[2] = 0xff; | |
2090 | value[3] = 0x00; | |
2091 | value[4] = 0x00; | |
2092 | value[5] = 0x00; | |
2093 | value[6] = 0x00; | |
2094 | value[7] = 0xff; | |
2095 | } | |
2096 | /* These are the values of the address of the video buffer, | |
2097 | * they have to be loaded into the USBVISION_DRM_PRM1-8 | |
2098 | * | |
6d6a48e5 HV |
2099 | * Start address of video output buffer for read: drm_prm1-2 -> 0x00000 |
2100 | * End address of video output buffer for read: drm_prm1-3 -> 0x1ffff | |
2101 | * Start address of video frame delay buffer: drm_prm1-4 -> 0x20000 | |
781aa1d1 | 2102 | * Only used in compressed mode |
6d6a48e5 | 2103 | * End address of video frame delay buffer: drm_prm1-5-6 -> 0x3ffff |
781aa1d1 | 2104 | * Only used in compressed mode |
6d6a48e5 HV |
2105 | * Start address of video output buffer for write: drm_prm1-7 -> 0x00000 |
2106 | * End address of video output buffer for write: drm_prm1-8 -> 0x1ffff | |
781aa1d1 MCC |
2107 | */ |
2108 | ||
2109 | if (!USBVISION_IS_OPERATIONAL(usbvision)) | |
2110 | return 0; | |
2111 | ||
2112 | rc = usb_control_msg(usbvision->dev, usb_sndctrlpipe(usbvision->dev, 1), | |
2113 | USBVISION_OP_CODE, /* USBVISION specific code */ | |
2114 | USB_DIR_OUT | USB_TYPE_VENDOR | | |
2115 | USB_RECIP_ENDPOINT, 0, | |
2116 | (__u16) USBVISION_DRM_PRM1, value, 8, HZ); | |
2117 | ||
2118 | if (rc < 0) { | |
240d57bb | 2119 | dev_err(&usbvision->dev->dev, "%s: ERROR=%d\n", __func__, rc); |
781aa1d1 MCC |
2120 | return rc; |
2121 | } | |
2122 | ||
2123 | /* Restart the video buffer logic */ | |
6d6a48e5 HV |
2124 | rc = usbvision_write_reg(usbvision, USBVISION_DRM_CONT, USBVISION_RES_UR | |
2125 | USBVISION_RES_FDL | USBVISION_RES_VDW); | |
2126 | if (rc < 0) | |
781aa1d1 MCC |
2127 | return rc; |
2128 | rc = usbvision_write_reg(usbvision, USBVISION_DRM_CONT, 0x00); | |
2129 | ||
2130 | return rc; | |
2131 | } | |
2132 | ||
2133 | /* | |
2134 | * () | |
2135 | * | |
2136 | * Power on the device, enables suspend-resume logic | |
2137 | * & reset the isoc End-Point | |
2138 | * | |
2139 | */ | |
2140 | ||
483dfdb6 | 2141 | int usbvision_power_on(struct usb_usbvision *usbvision) |
781aa1d1 | 2142 | { |
5490a7cb | 2143 | int err_code = 0; |
781aa1d1 MCC |
2144 | |
2145 | PDEBUG(DBG_FUNC, ""); | |
2146 | ||
2147 | usbvision_write_reg(usbvision, USBVISION_PWR_REG, USBVISION_SSPND_EN); | |
2148 | usbvision_write_reg(usbvision, USBVISION_PWR_REG, | |
6d6a48e5 | 2149 | USBVISION_SSPND_EN | USBVISION_RES2); |
38284ba3 | 2150 | |
240d57bb OZ |
2151 | if (usbvision_device_data[usbvision->dev_model].codec == CODEC_WEBCAM) { |
2152 | usbvision_write_reg(usbvision, USBVISION_VIN_REG1, | |
2153 | USBVISION_16_422_SYNC | USBVISION_HVALID_PO); | |
2154 | usbvision_write_reg(usbvision, USBVISION_VIN_REG2, | |
2155 | USBVISION_NOHVALID | USBVISION_KEEP_BLANK); | |
2156 | } | |
781aa1d1 | 2157 | usbvision_write_reg(usbvision, USBVISION_PWR_REG, |
6d6a48e5 | 2158 | USBVISION_SSPND_EN | USBVISION_PWR_VID); |
240d57bb | 2159 | mdelay(10); |
5490a7cb | 2160 | err_code = usbvision_write_reg(usbvision, USBVISION_PWR_REG, |
6d6a48e5 HV |
2161 | USBVISION_SSPND_EN | USBVISION_PWR_VID | USBVISION_RES2); |
2162 | if (err_code == 1) | |
781aa1d1 | 2163 | usbvision->power = 1; |
6d6a48e5 | 2164 | PDEBUG(DBG_FUNC, "%s: err_code %d", (err_code < 0) ? "ERROR" : "power is on", err_code); |
5490a7cb | 2165 | return err_code; |
781aa1d1 MCC |
2166 | } |
2167 | ||
2168 | ||
483dfdb6 TM |
2169 | /* |
2170 | * usbvision timer stuff | |
2171 | */ | |
2172 | ||
52cb0bf2 | 2173 | /* to call usbvision_power_off from task queue */ |
67952e8c | 2174 | static void call_usbvision_power_off(struct work_struct *work) |
483dfdb6 | 2175 | { |
5490a7cb | 2176 | struct usb_usbvision *usbvision = container_of(work, struct usb_usbvision, power_off_work); |
483dfdb6 TM |
2177 | |
2178 | PDEBUG(DBG_FUNC, ""); | |
c627b9d1 | 2179 | if (mutex_lock_interruptible(&usbvision->v4l2_lock)) |
289d4d2f | 2180 | return; |
289d4d2f | 2181 | |
6d6a48e5 | 2182 | if (usbvision->user == 0) { |
1ff16c20 | 2183 | usbvision_i2c_unregister(usbvision); |
67952e8c | 2184 | |
483dfdb6 TM |
2185 | usbvision_power_off(usbvision); |
2186 | usbvision->initialized = 0; | |
2187 | } | |
c627b9d1 | 2188 | mutex_unlock(&usbvision->v4l2_lock); |
483dfdb6 TM |
2189 | } |
2190 | ||
5490a7cb | 2191 | static void usbvision_power_off_timer(unsigned long data) |
781aa1d1 | 2192 | { |
6d6a48e5 | 2193 | struct usb_usbvision *usbvision = (void *)data; |
781aa1d1 MCC |
2194 | |
2195 | PDEBUG(DBG_FUNC, ""); | |
5490a7cb HV |
2196 | del_timer(&usbvision->power_off_timer); |
2197 | INIT_WORK(&usbvision->power_off_work, call_usbvision_power_off); | |
2198 | (void) schedule_work(&usbvision->power_off_work); | |
781aa1d1 MCC |
2199 | } |
2200 | ||
5490a7cb | 2201 | void usbvision_init_power_off_timer(struct usb_usbvision *usbvision) |
483dfdb6 | 2202 | { |
5490a7cb | 2203 | init_timer(&usbvision->power_off_timer); |
6d6a48e5 | 2204 | usbvision->power_off_timer.data = (long)usbvision; |
5490a7cb | 2205 | usbvision->power_off_timer.function = usbvision_power_off_timer; |
483dfdb6 TM |
2206 | } |
2207 | ||
5490a7cb | 2208 | void usbvision_set_power_off_timer(struct usb_usbvision *usbvision) |
483dfdb6 | 2209 | { |
5490a7cb | 2210 | mod_timer(&usbvision->power_off_timer, jiffies + USBVISION_POWEROFF_TIME); |
483dfdb6 TM |
2211 | } |
2212 | ||
5490a7cb | 2213 | void usbvision_reset_power_off_timer(struct usb_usbvision *usbvision) |
483dfdb6 | 2214 | { |
6d6a48e5 | 2215 | if (timer_pending(&usbvision->power_off_timer)) |
5490a7cb | 2216 | del_timer(&usbvision->power_off_timer); |
483dfdb6 | 2217 | } |
781aa1d1 MCC |
2218 | |
2219 | /* | |
2220 | * usbvision_begin_streaming() | |
2221 | * Sure you have to put bit 7 to 0, if not incoming frames are droped, but no | |
2222 | * idea about the rest | |
2223 | */ | |
483dfdb6 | 2224 | int usbvision_begin_streaming(struct usb_usbvision *usbvision) |
781aa1d1 | 2225 | { |
6d6a48e5 | 2226 | if (usbvision->isoc_mode == ISOC_MODE_COMPRESS) |
781aa1d1 | 2227 | usbvision_init_compression(usbvision); |
6d6a48e5 HV |
2228 | return usbvision_write_reg(usbvision, USBVISION_VIN_REG2, |
2229 | USBVISION_NOHVALID | usbvision->vin_reg2_preset); | |
781aa1d1 MCC |
2230 | } |
2231 | ||
2232 | /* | |
2233 | * usbvision_restart_isoc() | |
2234 | * Not sure yet if touching here PWR_REG make loose the config | |
2235 | */ | |
2236 | ||
483dfdb6 | 2237 | int usbvision_restart_isoc(struct usb_usbvision *usbvision) |
781aa1d1 MCC |
2238 | { |
2239 | int ret; | |
2240 | ||
6d6a48e5 HV |
2241 | ret = usbvision_write_reg(usbvision, USBVISION_PWR_REG, |
2242 | USBVISION_SSPND_EN | USBVISION_PWR_VID); | |
2243 | if (ret < 0) | |
781aa1d1 | 2244 | return ret; |
6d6a48e5 | 2245 | ret = usbvision_write_reg(usbvision, USBVISION_PWR_REG, |
781aa1d1 | 2246 | USBVISION_SSPND_EN | USBVISION_PWR_VID | |
6d6a48e5 HV |
2247 | USBVISION_RES2); |
2248 | if (ret < 0) | |
781aa1d1 | 2249 | return ret; |
6d6a48e5 | 2250 | ret = usbvision_write_reg(usbvision, USBVISION_VIN_REG2, |
781aa1d1 | 2251 | USBVISION_KEEP_BLANK | USBVISION_NOHVALID | |
6d6a48e5 HV |
2252 | usbvision->vin_reg2_preset); |
2253 | if (ret < 0) | |
2254 | return ret; | |
781aa1d1 MCC |
2255 | |
2256 | /* TODO: schedule timeout */ | |
6d6a48e5 HV |
2257 | while ((usbvision_read_reg(usbvision, USBVISION_STATUS_REG) & 0x01) != 1) |
2258 | ; | |
781aa1d1 MCC |
2259 | |
2260 | return 0; | |
2261 | } | |
2262 | ||
483dfdb6 | 2263 | int usbvision_audio_off(struct usb_usbvision *usbvision) |
781aa1d1 MCC |
2264 | { |
2265 | if (usbvision_write_reg(usbvision, USBVISION_IOPIN_REG, USBVISION_AUDIO_MUTE) < 0) { | |
6d6a48e5 | 2266 | printk(KERN_ERR "usbvision_audio_off: can't write reg\n"); |
781aa1d1 MCC |
2267 | return -1; |
2268 | } | |
5490a7cb HV |
2269 | usbvision->audio_mute = 0; |
2270 | usbvision->audio_channel = USBVISION_AUDIO_MUTE; | |
781aa1d1 MCC |
2271 | return 0; |
2272 | } | |
2273 | ||
5490a7cb | 2274 | int usbvision_set_audio(struct usb_usbvision *usbvision, int audio_channel) |
781aa1d1 | 2275 | { |
5490a7cb HV |
2276 | if (!usbvision->audio_mute) { |
2277 | if (usbvision_write_reg(usbvision, USBVISION_IOPIN_REG, audio_channel) < 0) { | |
781aa1d1 MCC |
2278 | printk(KERN_ERR "usbvision_set_audio: can't write iopin register for audio switching\n"); |
2279 | return -1; | |
2280 | } | |
2281 | } | |
5490a7cb | 2282 | usbvision->audio_channel = audio_channel; |
781aa1d1 MCC |
2283 | return 0; |
2284 | } | |
2285 | ||
6d6a48e5 | 2286 | int usbvision_setup(struct usb_usbvision *usbvision, int format) |
781aa1d1 | 2287 | { |
240d57bb OZ |
2288 | if (usbvision_device_data[usbvision->dev_model].codec == CODEC_WEBCAM) |
2289 | usbvision_init_webcam(usbvision); | |
483dfdb6 | 2290 | usbvision_set_video_format(usbvision, format); |
781aa1d1 MCC |
2291 | usbvision_set_dram_settings(usbvision); |
2292 | usbvision_set_compress_params(usbvision); | |
2293 | usbvision_set_input(usbvision); | |
2294 | usbvision_set_output(usbvision, MAX_USB_WIDTH, MAX_USB_HEIGHT); | |
2295 | usbvision_restart_isoc(usbvision); | |
18d8a454 | 2296 | |
781aa1d1 MCC |
2297 | /* cosas del PCM */ |
2298 | return USBVISION_IS_OPERATIONAL(usbvision); | |
2299 | } | |
2300 | ||
2a9f8b5d TM |
2301 | int usbvision_set_alternate(struct usb_usbvision *dev) |
2302 | { | |
5490a7cb | 2303 | int err_code, prev_alt = dev->iface_alt; |
2a9f8b5d TM |
2304 | int i; |
2305 | ||
6d6a48e5 HV |
2306 | dev->iface_alt = 0; |
2307 | for (i = 0; i < dev->num_alt; i++) | |
2308 | if (dev->alt_max_pkt_size[i] > dev->alt_max_pkt_size[dev->iface_alt]) | |
2309 | dev->iface_alt = i; | |
5490a7cb HV |
2310 | |
2311 | if (dev->iface_alt != prev_alt) { | |
2312 | dev->isoc_packet_size = dev->alt_max_pkt_size[dev->iface_alt]; | |
6d6a48e5 HV |
2313 | PDEBUG(DBG_FUNC, "setting alternate %d with max_packet_size=%u", |
2314 | dev->iface_alt, dev->isoc_packet_size); | |
5490a7cb HV |
2315 | err_code = usb_set_interface(dev->dev, dev->iface, dev->iface_alt); |
2316 | if (err_code < 0) { | |
be9ed511 MCC |
2317 | dev_err(&dev->dev->dev, |
2318 | "cannot change alternate number to %d (error=%i)\n", | |
5490a7cb HV |
2319 | dev->iface_alt, err_code); |
2320 | return err_code; | |
2a9f8b5d TM |
2321 | } |
2322 | } | |
2323 | ||
5490a7cb | 2324 | PDEBUG(DBG_ISOC, "ISO Packet Length:%d", dev->isoc_packet_size); |
2a9f8b5d TM |
2325 | |
2326 | return 0; | |
2327 | } | |
2328 | ||
483dfdb6 TM |
2329 | /* |
2330 | * usbvision_init_isoc() | |
2331 | * | |
2332 | */ | |
2333 | int usbvision_init_isoc(struct usb_usbvision *usbvision) | |
2334 | { | |
2335 | struct usb_device *dev = usbvision->dev; | |
5490a7cb | 2336 | int buf_idx, err_code, reg_value; |
fe818d1d | 2337 | int sb_size; |
483dfdb6 TM |
2338 | |
2339 | if (!USBVISION_IS_OPERATIONAL(usbvision)) | |
2340 | return -EFAULT; | |
2341 | ||
5490a7cb | 2342 | usbvision->cur_frame = NULL; |
483dfdb6 TM |
2343 | scratch_reset(usbvision); |
2344 | ||
2345 | /* Alternate interface 1 is is the biggest frame size */ | |
5490a7cb HV |
2346 | err_code = usbvision_set_alternate(usbvision); |
2347 | if (err_code < 0) { | |
2348 | usbvision->last_error = err_code; | |
781aa1d1 MCC |
2349 | return -EBUSY; |
2350 | } | |
5490a7cb | 2351 | sb_size = USBVISION_URB_FRAMES * usbvision->isoc_packet_size; |
781aa1d1 | 2352 | |
5490a7cb | 2353 | reg_value = (16 - usbvision_read_reg(usbvision, |
fe818d1d | 2354 | USBVISION_ALTER_REG)) & 0x0F; |
781aa1d1 | 2355 | |
5490a7cb | 2356 | usbvision->usb_bandwidth = reg_value >> 1; |
fe818d1d TM |
2357 | PDEBUG(DBG_ISOC, "USB Bandwidth Usage: %dMbit/Sec", |
2358 | usbvision->usb_bandwidth); | |
781aa1d1 MCC |
2359 | |
2360 | ||
2361 | ||
2362 | /* We double buffer the Iso lists */ | |
2363 | ||
5490a7cb | 2364 | for (buf_idx = 0; buf_idx < USBVISION_NUMSBUF; buf_idx++) { |
781aa1d1 MCC |
2365 | int j, k; |
2366 | struct urb *urb; | |
2367 | ||
a1ed551c | 2368 | urb = usb_alloc_urb(USBVISION_URB_FRAMES, GFP_KERNEL); |
781aa1d1 | 2369 | if (urb == NULL) { |
be9ed511 MCC |
2370 | dev_err(&usbvision->dev->dev, |
2371 | "%s: usb_alloc_urb() failed\n", __func__); | |
781aa1d1 MCC |
2372 | return -ENOMEM; |
2373 | } | |
5490a7cb HV |
2374 | usbvision->sbuf[buf_idx].urb = urb; |
2375 | usbvision->sbuf[buf_idx].data = | |
997ea58e DM |
2376 | usb_alloc_coherent(usbvision->dev, |
2377 | sb_size, | |
2378 | GFP_KERNEL, | |
2379 | &urb->transfer_dma); | |
781aa1d1 MCC |
2380 | urb->dev = dev; |
2381 | urb->context = usbvision; | |
2382 | urb->pipe = usb_rcvisocpipe(dev, usbvision->video_endp); | |
f8768970 | 2383 | urb->transfer_flags = URB_ISO_ASAP | URB_NO_TRANSFER_DMA_MAP; |
781aa1d1 | 2384 | urb->interval = 1; |
5490a7cb HV |
2385 | urb->transfer_buffer = usbvision->sbuf[buf_idx].data; |
2386 | urb->complete = usbvision_isoc_irq; | |
781aa1d1 MCC |
2387 | urb->number_of_packets = USBVISION_URB_FRAMES; |
2388 | urb->transfer_buffer_length = | |
5490a7cb | 2389 | usbvision->isoc_packet_size * USBVISION_URB_FRAMES; |
781aa1d1 | 2390 | for (j = k = 0; j < USBVISION_URB_FRAMES; j++, |
5490a7cb | 2391 | k += usbvision->isoc_packet_size) { |
781aa1d1 | 2392 | urb->iso_frame_desc[j].offset = k; |
fe818d1d | 2393 | urb->iso_frame_desc[j].length = |
5490a7cb | 2394 | usbvision->isoc_packet_size; |
781aa1d1 MCC |
2395 | } |
2396 | } | |
2397 | ||
781aa1d1 | 2398 | /* Submit all URBs */ |
5490a7cb HV |
2399 | for (buf_idx = 0; buf_idx < USBVISION_NUMSBUF; buf_idx++) { |
2400 | err_code = usb_submit_urb(usbvision->sbuf[buf_idx].urb, | |
fe818d1d | 2401 | GFP_KERNEL); |
5490a7cb | 2402 | if (err_code) { |
be9ed511 MCC |
2403 | dev_err(&usbvision->dev->dev, |
2404 | "%s: usb_submit_urb(%d) failed: error %d\n", | |
5490a7cb | 2405 | __func__, buf_idx, err_code); |
781aa1d1 MCC |
2406 | } |
2407 | } | |
2408 | ||
5490a7cb | 2409 | usbvision->streaming = stream_idle; |
fe818d1d | 2410 | PDEBUG(DBG_ISOC, "%s: streaming=1 usbvision->video_endp=$%02x", |
d2db42dd | 2411 | __func__, |
fe818d1d | 2412 | usbvision->video_endp); |
781aa1d1 MCC |
2413 | return 0; |
2414 | } | |
2415 | ||
2416 | /* | |
2417 | * usbvision_stop_isoc() | |
2418 | * | |
2419 | * This procedure stops streaming and deallocates URBs. Then it | |
2420 | * activates zero-bandwidth alt. setting of the video interface. | |
2421 | * | |
2422 | */ | |
483dfdb6 | 2423 | void usbvision_stop_isoc(struct usb_usbvision *usbvision) |
781aa1d1 | 2424 | { |
5490a7cb HV |
2425 | int buf_idx, err_code, reg_value; |
2426 | int sb_size = USBVISION_URB_FRAMES * usbvision->isoc_packet_size; | |
781aa1d1 | 2427 | |
5490a7cb | 2428 | if ((usbvision->streaming == stream_off) || (usbvision->dev == NULL)) |
781aa1d1 MCC |
2429 | return; |
2430 | ||
2431 | /* Unschedule all of the iso td's */ | |
5490a7cb HV |
2432 | for (buf_idx = 0; buf_idx < USBVISION_NUMSBUF; buf_idx++) { |
2433 | usb_kill_urb(usbvision->sbuf[buf_idx].urb); | |
6d6a48e5 | 2434 | if (usbvision->sbuf[buf_idx].data) { |
997ea58e DM |
2435 | usb_free_coherent(usbvision->dev, |
2436 | sb_size, | |
5490a7cb HV |
2437 | usbvision->sbuf[buf_idx].data, |
2438 | usbvision->sbuf[buf_idx].urb->transfer_dma); | |
38284ba3 | 2439 | } |
5490a7cb HV |
2440 | usb_free_urb(usbvision->sbuf[buf_idx].urb); |
2441 | usbvision->sbuf[buf_idx].urb = NULL; | |
18d8a454 | 2442 | } |
781aa1d1 | 2443 | |
5490a7cb HV |
2444 | PDEBUG(DBG_ISOC, "%s: streaming=stream_off\n", __func__); |
2445 | usbvision->streaming = stream_off; | |
781aa1d1 MCC |
2446 | |
2447 | if (!usbvision->remove_pending) { | |
781aa1d1 | 2448 | /* Set packet size to 0 */ |
6d6a48e5 | 2449 | usbvision->iface_alt = 0; |
5490a7cb HV |
2450 | err_code = usb_set_interface(usbvision->dev, usbvision->iface, |
2451 | usbvision->iface_alt); | |
2452 | if (err_code < 0) { | |
be9ed511 MCC |
2453 | dev_err(&usbvision->dev->dev, |
2454 | "%s: usb_set_interface() failed: error %d\n", | |
5490a7cb HV |
2455 | __func__, err_code); |
2456 | usbvision->last_error = err_code; | |
781aa1d1 | 2457 | } |
5490a7cb HV |
2458 | reg_value = (16-usbvision_read_reg(usbvision, USBVISION_ALTER_REG)) & 0x0F; |
2459 | usbvision->isoc_packet_size = | |
2460 | (reg_value == 0) ? 0 : (reg_value * 64) - 1; | |
fe818d1d | 2461 | PDEBUG(DBG_ISOC, "ISO Packet Length:%d", |
5490a7cb | 2462 | usbvision->isoc_packet_size); |
781aa1d1 | 2463 | |
5490a7cb | 2464 | usbvision->usb_bandwidth = reg_value >> 1; |
fe818d1d TM |
2465 | PDEBUG(DBG_ISOC, "USB Bandwidth Usage: %dMbit/Sec", |
2466 | usbvision->usb_bandwidth); | |
781aa1d1 MCC |
2467 | } |
2468 | } | |
2469 | ||
483dfdb6 | 2470 | int usbvision_muxsel(struct usb_usbvision *usbvision, int channel) |
781aa1d1 | 2471 | { |
66a17879 TM |
2472 | /* inputs #0 and #3 are constant for every SAA711x. */ |
2473 | /* inputs #1 and #2 are variable for SAA7111 and SAA7113 */ | |
6d6a48e5 HV |
2474 | int mode[4] = { SAA7115_COMPOSITE0, 0, 0, SAA7115_COMPOSITE3 }; |
2475 | int audio[] = { 1, 0, 0, 0 }; | |
52cb0bf2 HV |
2476 | /* channel 0 is TV with audiochannel 1 (tuner mono) */ |
2477 | /* channel 1 is Composite with audio channel 0 (line in) */ | |
2478 | /* channel 2 is S-Video with audio channel 0 (line in) */ | |
2479 | /* channel 3 is additional video inputs to the device with audio channel 0 (line in) */ | |
781aa1d1 MCC |
2480 | |
2481 | RESTRICT_TO_RANGE(channel, 0, usbvision->video_inputs); | |
f2242ee5 | 2482 | usbvision->ctl_input = channel; |
781aa1d1 | 2483 | |
52cb0bf2 HV |
2484 | /* set the new channel */ |
2485 | /* Regular USB TV Tuners -> channel: 0 = Television, 1 = Composite, 2 = S-Video */ | |
2486 | /* Four video input devices -> channel: 0 = Chan White, 1 = Chan Green, 2 = Chan Yellow, 3 = Chan Red */ | |
781aa1d1 | 2487 | |
5490a7cb | 2488 | switch (usbvision_device_data[usbvision->dev_model].codec) { |
6d6a48e5 HV |
2489 | case CODEC_SAA7113: |
2490 | mode[1] = SAA7115_COMPOSITE2; | |
2491 | if (switch_svideo_input) { | |
2492 | /* To handle problems with S-Video Input for | |
2493 | * some devices. Use switch_svideo_input | |
2494 | * parameter when loading the module.*/ | |
2495 | mode[2] = SAA7115_COMPOSITE1; | |
2496 | } else { | |
66a17879 | 2497 | mode[2] = SAA7115_SVIDEO1; |
6d6a48e5 HV |
2498 | } |
2499 | break; | |
2500 | case CODEC_SAA7111: | |
2501 | default: | |
2502 | /* modes for saa7111 */ | |
2503 | mode[1] = SAA7115_COMPOSITE1; | |
2504 | mode[2] = SAA7115_SVIDEO1; | |
2505 | break; | |
781aa1d1 | 2506 | } |
5325b427 | 2507 | call_all(usbvision, video, s_routing, mode[channel], 0, 0); |
781aa1d1 MCC |
2508 | usbvision_set_audio(usbvision, audio[channel]); |
2509 | return 0; | |
2510 | } | |
2511 | ||
781aa1d1 MCC |
2512 | /* |
2513 | * Overrides for Emacs so that we follow Linus's tabbing style. | |
2514 | * --------------------------------------------------------------------------- | |
2515 | * Local variables: | |
2516 | * c-basic-offset: 8 | |
2517 | * End: | |
2518 | */ |