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c27cea03 HG |
1 | /* |
2 | * GSPCA Endpoints (formerly known as AOX) se401 USB Camera sub Driver | |
3 | * | |
4 | * Copyright (C) 2011 Hans de Goede <hdegoede@redhat.com> | |
5 | * | |
6 | * Based on the v4l1 se401 driver which is: | |
7 | * | |
8 | * Copyright (c) 2000 Jeroen B. Vreeken (pe1rxq@amsat.org) | |
9 | * | |
10 | * This program is free software; you can redistribute it and/or modify | |
11 | * it under the terms of the GNU General Public License as published by | |
12 | * the Free Software Foundation; either version 2 of the License, or | |
13 | * (at your option) any later version. | |
14 | * | |
15 | * This program is distributed in the hope that it will be useful, | |
16 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
18 | * GNU General Public License for more details. | |
19 | * | |
20 | * You should have received a copy of the GNU General Public License | |
21 | * along with this program; if not, write to the Free Software | |
22 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
23 | * | |
24 | */ | |
25 | ||
133a9fe9 JP |
26 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
27 | ||
c27cea03 HG |
28 | #define MODULE_NAME "se401" |
29 | ||
30 | #define BULK_SIZE 4096 | |
31 | #define PACKET_SIZE 1024 | |
32 | #define READ_REQ_SIZE 64 | |
33 | #define MAX_MODES ((READ_REQ_SIZE - 6) / 4) | |
34 | /* The se401 compression algorithm uses a fixed quant factor, which | |
35 | can be configured by setting the high nibble of the SE401_OPERATINGMODE | |
36 | feature. This needs to exactly match what is in libv4l! */ | |
37 | #define SE401_QUANT_FACT 8 | |
38 | ||
39 | #include <linux/input.h> | |
40 | #include <linux/slab.h> | |
41 | #include "gspca.h" | |
42 | #include "se401.h" | |
43 | ||
44 | MODULE_AUTHOR("Hans de Goede <hdegoede@redhat.com>"); | |
45 | MODULE_DESCRIPTION("Endpoints se401"); | |
46 | MODULE_LICENSE("GPL"); | |
47 | ||
c27cea03 HG |
48 | /* exposure change state machine states */ |
49 | enum { | |
50 | EXPO_CHANGED, | |
51 | EXPO_DROP_FRAME, | |
52 | EXPO_NO_CHANGE, | |
53 | }; | |
54 | ||
55 | /* specific webcam descriptor */ | |
56 | struct sd { | |
57 | struct gspca_dev gspca_dev; /* !! must be the first item */ | |
5262eeec HV |
58 | struct { /* exposure/freq control cluster */ |
59 | struct v4l2_ctrl *exposure; | |
60 | struct v4l2_ctrl *freq; | |
61 | }; | |
62 | bool has_brightness; | |
c27cea03 HG |
63 | struct v4l2_pix_format fmts[MAX_MODES]; |
64 | int pixels_read; | |
65 | int packet_read; | |
66 | u8 packet[PACKET_SIZE]; | |
67 | u8 restart_stream; | |
68 | u8 button_state; | |
69 | u8 resetlevel; | |
70 | u8 resetlevel_frame_count; | |
71 | int resetlevel_adjust_dir; | |
72 | int expo_change_state; | |
73 | }; | |
74 | ||
c27cea03 HG |
75 | |
76 | static void se401_write_req(struct gspca_dev *gspca_dev, u16 req, u16 value, | |
77 | int silent) | |
78 | { | |
79 | int err; | |
80 | ||
81 | if (gspca_dev->usb_err < 0) | |
82 | return; | |
83 | ||
84 | err = usb_control_msg(gspca_dev->dev, | |
85 | usb_sndctrlpipe(gspca_dev->dev, 0), req, | |
86 | USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE, | |
87 | value, 0, NULL, 0, 1000); | |
88 | if (err < 0) { | |
89 | if (!silent) | |
133a9fe9 JP |
90 | pr_err("write req failed req %#04x val %#04x error %d\n", |
91 | req, value, err); | |
c27cea03 HG |
92 | gspca_dev->usb_err = err; |
93 | } | |
94 | } | |
95 | ||
96 | static void se401_read_req(struct gspca_dev *gspca_dev, u16 req, int silent) | |
97 | { | |
98 | int err; | |
99 | ||
100 | if (gspca_dev->usb_err < 0) | |
101 | return; | |
102 | ||
103 | if (USB_BUF_SZ < READ_REQ_SIZE) { | |
133a9fe9 | 104 | pr_err("USB_BUF_SZ too small!!\n"); |
c27cea03 HG |
105 | gspca_dev->usb_err = -ENOBUFS; |
106 | return; | |
107 | } | |
108 | ||
109 | err = usb_control_msg(gspca_dev->dev, | |
110 | usb_rcvctrlpipe(gspca_dev->dev, 0), req, | |
111 | USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE, | |
112 | 0, 0, gspca_dev->usb_buf, READ_REQ_SIZE, 1000); | |
113 | if (err < 0) { | |
114 | if (!silent) | |
133a9fe9 JP |
115 | pr_err("read req failed req %#04x error %d\n", |
116 | req, err); | |
c27cea03 HG |
117 | gspca_dev->usb_err = err; |
118 | } | |
119 | } | |
120 | ||
121 | static void se401_set_feature(struct gspca_dev *gspca_dev, | |
122 | u16 selector, u16 param) | |
123 | { | |
124 | int err; | |
125 | ||
126 | if (gspca_dev->usb_err < 0) | |
127 | return; | |
128 | ||
129 | err = usb_control_msg(gspca_dev->dev, | |
130 | usb_sndctrlpipe(gspca_dev->dev, 0), | |
131 | SE401_REQ_SET_EXT_FEATURE, | |
132 | USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE, | |
133 | param, selector, NULL, 0, 1000); | |
134 | if (err < 0) { | |
133a9fe9 JP |
135 | pr_err("set feature failed sel %#04x param %#04x error %d\n", |
136 | selector, param, err); | |
c27cea03 HG |
137 | gspca_dev->usb_err = err; |
138 | } | |
139 | } | |
140 | ||
141 | static int se401_get_feature(struct gspca_dev *gspca_dev, u16 selector) | |
142 | { | |
143 | int err; | |
144 | ||
145 | if (gspca_dev->usb_err < 0) | |
146 | return gspca_dev->usb_err; | |
147 | ||
148 | if (USB_BUF_SZ < 2) { | |
133a9fe9 | 149 | pr_err("USB_BUF_SZ too small!!\n"); |
c27cea03 HG |
150 | gspca_dev->usb_err = -ENOBUFS; |
151 | return gspca_dev->usb_err; | |
152 | } | |
153 | ||
154 | err = usb_control_msg(gspca_dev->dev, | |
155 | usb_rcvctrlpipe(gspca_dev->dev, 0), | |
156 | SE401_REQ_GET_EXT_FEATURE, | |
157 | USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE, | |
158 | 0, selector, gspca_dev->usb_buf, 2, 1000); | |
159 | if (err < 0) { | |
133a9fe9 JP |
160 | pr_err("get feature failed sel %#04x error %d\n", |
161 | selector, err); | |
c27cea03 HG |
162 | gspca_dev->usb_err = err; |
163 | return err; | |
164 | } | |
165 | return gspca_dev->usb_buf[0] | (gspca_dev->usb_buf[1] << 8); | |
166 | } | |
167 | ||
5262eeec | 168 | static void setbrightness(struct gspca_dev *gspca_dev, s32 val) |
c27cea03 | 169 | { |
c27cea03 | 170 | /* HDG: this does not seem to do anything on my cam */ |
5262eeec | 171 | se401_write_req(gspca_dev, SE401_REQ_SET_BRT, val, 0); |
c27cea03 HG |
172 | } |
173 | ||
5262eeec | 174 | static void setgain(struct gspca_dev *gspca_dev, s32 val) |
c27cea03 | 175 | { |
5262eeec | 176 | u16 gain = 63 - val; |
c27cea03 HG |
177 | |
178 | /* red color gain */ | |
179 | se401_set_feature(gspca_dev, HV7131_REG_ARCG, gain); | |
180 | /* green color gain */ | |
181 | se401_set_feature(gspca_dev, HV7131_REG_AGCG, gain); | |
182 | /* blue color gain */ | |
183 | se401_set_feature(gspca_dev, HV7131_REG_ABCG, gain); | |
184 | } | |
185 | ||
5262eeec | 186 | static void setexposure(struct gspca_dev *gspca_dev, s32 val, s32 freq) |
c27cea03 HG |
187 | { |
188 | struct sd *sd = (struct sd *) gspca_dev; | |
5262eeec | 189 | int integration = val << 6; |
c27cea03 HG |
190 | u8 expose_h, expose_m, expose_l; |
191 | ||
192 | /* Do this before the set_feature calls, for proper timing wrt | |
193 | the interrupt driven pkt_scan. Note we may still race but that | |
194 | is not a big issue, the expo change state machine is merely for | |
195 | avoiding underexposed frames getting send out, if one sneaks | |
196 | through so be it */ | |
197 | sd->expo_change_state = EXPO_CHANGED; | |
198 | ||
5262eeec | 199 | if (freq == V4L2_CID_POWER_LINE_FREQUENCY_50HZ) |
c27cea03 | 200 | integration = integration - integration % 106667; |
5262eeec | 201 | if (freq == V4L2_CID_POWER_LINE_FREQUENCY_60HZ) |
c27cea03 HG |
202 | integration = integration - integration % 88889; |
203 | ||
204 | expose_h = (integration >> 16); | |
205 | expose_m = (integration >> 8); | |
206 | expose_l = integration; | |
207 | ||
208 | /* integration time low */ | |
209 | se401_set_feature(gspca_dev, HV7131_REG_TITL, expose_l); | |
210 | /* integration time mid */ | |
211 | se401_set_feature(gspca_dev, HV7131_REG_TITM, expose_m); | |
212 | /* integration time high */ | |
213 | se401_set_feature(gspca_dev, HV7131_REG_TITU, expose_h); | |
214 | } | |
215 | ||
216 | static int sd_config(struct gspca_dev *gspca_dev, | |
217 | const struct usb_device_id *id) | |
218 | { | |
219 | struct sd *sd = (struct sd *)gspca_dev; | |
220 | struct cam *cam = &gspca_dev->cam; | |
221 | u8 *cd = gspca_dev->usb_buf; | |
222 | int i, j, n; | |
223 | int widths[MAX_MODES], heights[MAX_MODES]; | |
224 | ||
225 | /* Read the camera descriptor */ | |
226 | se401_read_req(gspca_dev, SE401_REQ_GET_CAMERA_DESCRIPTOR, 1); | |
227 | if (gspca_dev->usb_err) { | |
228 | /* Sometimes after being idle for a while the se401 won't | |
229 | respond and needs a good kicking */ | |
230 | usb_reset_device(gspca_dev->dev); | |
231 | gspca_dev->usb_err = 0; | |
232 | se401_read_req(gspca_dev, SE401_REQ_GET_CAMERA_DESCRIPTOR, 0); | |
233 | } | |
234 | ||
235 | /* Some cameras start with their LED on */ | |
236 | se401_write_req(gspca_dev, SE401_REQ_LED_CONTROL, 0, 0); | |
237 | if (gspca_dev->usb_err) | |
238 | return gspca_dev->usb_err; | |
239 | ||
240 | if (cd[1] != 0x41) { | |
133a9fe9 | 241 | pr_err("Wrong descriptor type\n"); |
c27cea03 HG |
242 | return -ENODEV; |
243 | } | |
244 | ||
245 | if (!(cd[2] & SE401_FORMAT_BAYER)) { | |
133a9fe9 | 246 | pr_err("Bayer format not supported!\n"); |
c27cea03 HG |
247 | return -ENODEV; |
248 | } | |
249 | ||
250 | if (cd[3]) | |
133a9fe9 | 251 | pr_info("ExtraFeatures: %d\n", cd[3]); |
c27cea03 HG |
252 | |
253 | n = cd[4] | (cd[5] << 8); | |
254 | if (n > MAX_MODES) { | |
133a9fe9 | 255 | pr_err("Too many frame sizes\n"); |
c27cea03 HG |
256 | return -ENODEV; |
257 | } | |
258 | ||
259 | for (i = 0; i < n ; i++) { | |
260 | widths[i] = cd[6 + i * 4 + 0] | (cd[6 + i * 4 + 1] << 8); | |
261 | heights[i] = cd[6 + i * 4 + 2] | (cd[6 + i * 4 + 3] << 8); | |
262 | } | |
263 | ||
264 | for (i = 0; i < n ; i++) { | |
265 | sd->fmts[i].width = widths[i]; | |
266 | sd->fmts[i].height = heights[i]; | |
267 | sd->fmts[i].field = V4L2_FIELD_NONE; | |
268 | sd->fmts[i].colorspace = V4L2_COLORSPACE_SRGB; | |
269 | sd->fmts[i].priv = 1; | |
270 | ||
271 | /* janggu compression only works for 1/4th or 1/16th res */ | |
272 | for (j = 0; j < n; j++) { | |
273 | if (widths[j] / 2 == widths[i] && | |
274 | heights[j] / 2 == heights[i]) { | |
275 | sd->fmts[i].priv = 2; | |
276 | break; | |
277 | } | |
278 | } | |
279 | /* 1/16th if available too is better then 1/4th, because | |
280 | we then use a larger area of the sensor */ | |
281 | for (j = 0; j < n; j++) { | |
282 | if (widths[j] / 4 == widths[i] && | |
283 | heights[j] / 4 == heights[i]) { | |
284 | sd->fmts[i].priv = 4; | |
285 | break; | |
286 | } | |
287 | } | |
288 | ||
289 | if (sd->fmts[i].priv == 1) { | |
290 | /* Not a 1/4th or 1/16th res, use bayer */ | |
291 | sd->fmts[i].pixelformat = V4L2_PIX_FMT_SBGGR8; | |
292 | sd->fmts[i].bytesperline = widths[i]; | |
293 | sd->fmts[i].sizeimage = widths[i] * heights[i]; | |
133a9fe9 JP |
294 | pr_info("Frame size: %dx%d bayer\n", |
295 | widths[i], heights[i]); | |
c27cea03 HG |
296 | } else { |
297 | /* Found a match use janggu compression */ | |
298 | sd->fmts[i].pixelformat = V4L2_PIX_FMT_SE401; | |
299 | sd->fmts[i].bytesperline = 0; | |
300 | sd->fmts[i].sizeimage = widths[i] * heights[i] * 3; | |
133a9fe9 JP |
301 | pr_info("Frame size: %dx%d 1/%dth janggu\n", |
302 | widths[i], heights[i], | |
303 | sd->fmts[i].priv * sd->fmts[i].priv); | |
c27cea03 HG |
304 | } |
305 | } | |
306 | ||
307 | cam->cam_mode = sd->fmts; | |
308 | cam->nmodes = n; | |
309 | cam->bulk = 1; | |
310 | cam->bulk_size = BULK_SIZE; | |
311 | cam->bulk_nurbs = 4; | |
c27cea03 HG |
312 | sd->resetlevel = 0x2d; /* Set initial resetlevel */ |
313 | ||
314 | /* See if the camera supports brightness */ | |
315 | se401_read_req(gspca_dev, SE401_REQ_GET_BRT, 1); | |
5262eeec HV |
316 | sd->has_brightness = !!gspca_dev->usb_err; |
317 | gspca_dev->usb_err = 0; | |
c27cea03 HG |
318 | |
319 | return 0; | |
320 | } | |
321 | ||
322 | /* this function is called at probe and resume time */ | |
323 | static int sd_init(struct gspca_dev *gspca_dev) | |
324 | { | |
325 | return 0; | |
326 | } | |
327 | ||
6121ca57 JFM |
328 | /* function called at start time before URB creation */ |
329 | static int sd_isoc_init(struct gspca_dev *gspca_dev) | |
330 | { | |
331 | gspca_dev->alt = 1; /* Ignore the bogus isoc alt settings */ | |
332 | ||
333 | return gspca_dev->usb_err; | |
334 | } | |
335 | ||
c27cea03 HG |
336 | /* -- start the camera -- */ |
337 | static int sd_start(struct gspca_dev *gspca_dev) | |
338 | { | |
339 | struct sd *sd = (struct sd *)gspca_dev; | |
340 | int mult = gspca_dev->cam.cam_mode[gspca_dev->curr_mode].priv; | |
341 | int mode = 0; | |
342 | ||
343 | se401_write_req(gspca_dev, SE401_REQ_CAMERA_POWER, 1, 1); | |
344 | if (gspca_dev->usb_err) { | |
345 | /* Sometimes after being idle for a while the se401 won't | |
346 | respond and needs a good kicking */ | |
347 | usb_reset_device(gspca_dev->dev); | |
348 | gspca_dev->usb_err = 0; | |
349 | se401_write_req(gspca_dev, SE401_REQ_CAMERA_POWER, 1, 0); | |
350 | } | |
351 | se401_write_req(gspca_dev, SE401_REQ_LED_CONTROL, 1, 0); | |
352 | ||
353 | se401_set_feature(gspca_dev, HV7131_REG_MODE_B, 0x05); | |
354 | ||
355 | /* set size + mode */ | |
356 | se401_write_req(gspca_dev, SE401_REQ_SET_WIDTH, | |
357 | gspca_dev->width * mult, 0); | |
358 | se401_write_req(gspca_dev, SE401_REQ_SET_HEIGHT, | |
359 | gspca_dev->height * mult, 0); | |
360 | /* | |
361 | * HDG: disabled this as it does not seem to do anything | |
362 | * se401_write_req(gspca_dev, SE401_REQ_SET_OUTPUT_MODE, | |
363 | * SE401_FORMAT_BAYER, 0); | |
364 | */ | |
365 | ||
366 | switch (mult) { | |
367 | case 1: /* Raw bayer */ | |
368 | mode = 0x03; break; | |
369 | case 2: /* 1/4th janggu */ | |
370 | mode = SE401_QUANT_FACT << 4; break; | |
371 | case 4: /* 1/16th janggu */ | |
372 | mode = (SE401_QUANT_FACT << 4) | 0x02; break; | |
373 | } | |
374 | se401_set_feature(gspca_dev, SE401_OPERATINGMODE, mode); | |
375 | ||
c27cea03 HG |
376 | se401_set_feature(gspca_dev, HV7131_REG_ARLV, sd->resetlevel); |
377 | ||
378 | sd->packet_read = 0; | |
379 | sd->pixels_read = 0; | |
380 | sd->restart_stream = 0; | |
381 | sd->resetlevel_frame_count = 0; | |
382 | sd->resetlevel_adjust_dir = 0; | |
383 | sd->expo_change_state = EXPO_NO_CHANGE; | |
384 | ||
385 | se401_write_req(gspca_dev, SE401_REQ_START_CONTINUOUS_CAPTURE, 0, 0); | |
386 | ||
387 | return gspca_dev->usb_err; | |
388 | } | |
389 | ||
390 | static void sd_stopN(struct gspca_dev *gspca_dev) | |
391 | { | |
392 | se401_write_req(gspca_dev, SE401_REQ_STOP_CONTINUOUS_CAPTURE, 0, 0); | |
393 | se401_write_req(gspca_dev, SE401_REQ_LED_CONTROL, 0, 0); | |
394 | se401_write_req(gspca_dev, SE401_REQ_CAMERA_POWER, 0, 0); | |
395 | } | |
396 | ||
397 | static void sd_dq_callback(struct gspca_dev *gspca_dev) | |
398 | { | |
399 | struct sd *sd = (struct sd *)gspca_dev; | |
400 | unsigned int ahrc, alrc; | |
401 | int oldreset, adjust_dir; | |
402 | ||
403 | /* Restart the stream if requested do so by pkt_scan */ | |
404 | if (sd->restart_stream) { | |
405 | sd_stopN(gspca_dev); | |
406 | sd_start(gspca_dev); | |
407 | sd->restart_stream = 0; | |
408 | } | |
409 | ||
410 | /* Automatically adjust sensor reset level | |
411 | Hyundai have some really nice docs about this and other sensor | |
412 | related stuff on their homepage: www.hei.co.kr */ | |
413 | sd->resetlevel_frame_count++; | |
414 | if (sd->resetlevel_frame_count < 20) | |
415 | return; | |
416 | ||
417 | /* For some reason this normally read-only register doesn't get reset | |
418 | to zero after reading them just once... */ | |
419 | se401_get_feature(gspca_dev, HV7131_REG_HIREFNOH); | |
420 | se401_get_feature(gspca_dev, HV7131_REG_HIREFNOL); | |
421 | se401_get_feature(gspca_dev, HV7131_REG_LOREFNOH); | |
422 | se401_get_feature(gspca_dev, HV7131_REG_LOREFNOL); | |
423 | ahrc = 256*se401_get_feature(gspca_dev, HV7131_REG_HIREFNOH) + | |
424 | se401_get_feature(gspca_dev, HV7131_REG_HIREFNOL); | |
425 | alrc = 256*se401_get_feature(gspca_dev, HV7131_REG_LOREFNOH) + | |
426 | se401_get_feature(gspca_dev, HV7131_REG_LOREFNOL); | |
427 | ||
428 | /* Not an exact science, but it seems to work pretty well... */ | |
429 | oldreset = sd->resetlevel; | |
430 | if (alrc > 10) { | |
431 | while (alrc >= 10 && sd->resetlevel < 63) { | |
432 | sd->resetlevel++; | |
433 | alrc /= 2; | |
434 | } | |
435 | } else if (ahrc > 20) { | |
436 | while (ahrc >= 20 && sd->resetlevel > 0) { | |
437 | sd->resetlevel--; | |
438 | ahrc /= 2; | |
439 | } | |
440 | } | |
441 | /* Detect ping-pong-ing and halve adjustment to avoid overshoot */ | |
442 | if (sd->resetlevel > oldreset) | |
443 | adjust_dir = 1; | |
444 | else | |
445 | adjust_dir = -1; | |
446 | if (sd->resetlevel_adjust_dir && | |
447 | sd->resetlevel_adjust_dir != adjust_dir) | |
448 | sd->resetlevel = oldreset + (sd->resetlevel - oldreset) / 2; | |
449 | ||
450 | if (sd->resetlevel != oldreset) { | |
451 | sd->resetlevel_adjust_dir = adjust_dir; | |
452 | se401_set_feature(gspca_dev, HV7131_REG_ARLV, sd->resetlevel); | |
453 | } | |
454 | ||
455 | sd->resetlevel_frame_count = 0; | |
456 | } | |
457 | ||
458 | static void sd_complete_frame(struct gspca_dev *gspca_dev, u8 *data, int len) | |
459 | { | |
460 | struct sd *sd = (struct sd *)gspca_dev; | |
461 | ||
462 | switch (sd->expo_change_state) { | |
463 | case EXPO_CHANGED: | |
464 | /* The exposure was changed while this frame | |
465 | was being send, so this frame is ok */ | |
466 | sd->expo_change_state = EXPO_DROP_FRAME; | |
467 | break; | |
468 | case EXPO_DROP_FRAME: | |
469 | /* The exposure was changed while this frame | |
470 | was being captured, drop it! */ | |
471 | gspca_dev->last_packet_type = DISCARD_PACKET; | |
472 | sd->expo_change_state = EXPO_NO_CHANGE; | |
473 | break; | |
474 | case EXPO_NO_CHANGE: | |
475 | break; | |
476 | } | |
477 | gspca_frame_add(gspca_dev, LAST_PACKET, data, len); | |
478 | } | |
479 | ||
480 | static void sd_pkt_scan_janggu(struct gspca_dev *gspca_dev, u8 *data, int len) | |
481 | { | |
482 | struct sd *sd = (struct sd *)gspca_dev; | |
483 | int imagesize = gspca_dev->width * gspca_dev->height; | |
484 | int i, plen, bits, pixels, info, count; | |
485 | ||
486 | if (sd->restart_stream) | |
487 | return; | |
488 | ||
489 | /* Sometimes a 1024 bytes garbage bulk packet is send between frames */ | |
490 | if (gspca_dev->last_packet_type == LAST_PACKET && len == 1024) { | |
491 | gspca_dev->last_packet_type = DISCARD_PACKET; | |
492 | return; | |
493 | } | |
494 | ||
495 | i = 0; | |
496 | while (i < len) { | |
497 | /* Read header if not already be present from prev bulk pkt */ | |
498 | if (sd->packet_read < 4) { | |
499 | count = 4 - sd->packet_read; | |
500 | if (count > len - i) | |
501 | count = len - i; | |
502 | memcpy(&sd->packet[sd->packet_read], &data[i], count); | |
503 | sd->packet_read += count; | |
504 | i += count; | |
505 | if (sd->packet_read < 4) | |
506 | break; | |
507 | } | |
508 | bits = sd->packet[3] + (sd->packet[2] << 8); | |
509 | pixels = sd->packet[1] + ((sd->packet[0] & 0x3f) << 8); | |
510 | info = (sd->packet[0] & 0xc0) >> 6; | |
511 | plen = ((bits + 47) >> 4) << 1; | |
512 | /* Sanity checks */ | |
513 | if (plen > 1024) { | |
133a9fe9 JP |
514 | pr_err("invalid packet len %d restarting stream\n", |
515 | plen); | |
c27cea03 HG |
516 | goto error; |
517 | } | |
518 | if (info == 3) { | |
133a9fe9 | 519 | pr_err("unknown frame info value restarting stream\n"); |
c27cea03 HG |
520 | goto error; |
521 | } | |
522 | ||
523 | /* Read (remainder of) packet contents */ | |
524 | count = plen - sd->packet_read; | |
525 | if (count > len - i) | |
526 | count = len - i; | |
527 | memcpy(&sd->packet[sd->packet_read], &data[i], count); | |
528 | sd->packet_read += count; | |
529 | i += count; | |
530 | if (sd->packet_read < plen) | |
531 | break; | |
532 | ||
533 | sd->pixels_read += pixels; | |
534 | sd->packet_read = 0; | |
535 | ||
536 | switch (info) { | |
537 | case 0: /* Frame data */ | |
538 | gspca_frame_add(gspca_dev, INTER_PACKET, sd->packet, | |
539 | plen); | |
540 | break; | |
541 | case 1: /* EOF */ | |
542 | if (sd->pixels_read != imagesize) { | |
133a9fe9 JP |
543 | pr_err("frame size %d expected %d\n", |
544 | sd->pixels_read, imagesize); | |
c27cea03 HG |
545 | goto error; |
546 | } | |
547 | sd_complete_frame(gspca_dev, sd->packet, plen); | |
548 | return; /* Discard the rest of the bulk packet !! */ | |
549 | case 2: /* SOF */ | |
550 | gspca_frame_add(gspca_dev, FIRST_PACKET, sd->packet, | |
551 | plen); | |
552 | sd->pixels_read = pixels; | |
553 | break; | |
554 | } | |
555 | } | |
556 | return; | |
557 | ||
558 | error: | |
559 | sd->restart_stream = 1; | |
560 | /* Give userspace a 0 bytes frame, so our dq callback gets | |
561 | called and it can restart the stream */ | |
562 | gspca_frame_add(gspca_dev, FIRST_PACKET, NULL, 0); | |
563 | gspca_frame_add(gspca_dev, LAST_PACKET, NULL, 0); | |
564 | } | |
565 | ||
566 | static void sd_pkt_scan_bayer(struct gspca_dev *gspca_dev, u8 *data, int len) | |
567 | { | |
568 | struct cam *cam = &gspca_dev->cam; | |
569 | int imagesize = cam->cam_mode[gspca_dev->curr_mode].sizeimage; | |
570 | ||
571 | if (gspca_dev->image_len == 0) { | |
572 | gspca_frame_add(gspca_dev, FIRST_PACKET, data, len); | |
573 | return; | |
574 | } | |
575 | ||
576 | if (gspca_dev->image_len + len >= imagesize) { | |
577 | sd_complete_frame(gspca_dev, data, len); | |
578 | return; | |
579 | } | |
580 | ||
581 | gspca_frame_add(gspca_dev, INTER_PACKET, data, len); | |
582 | } | |
583 | ||
584 | static void sd_pkt_scan(struct gspca_dev *gspca_dev, u8 *data, int len) | |
585 | { | |
586 | int mult = gspca_dev->cam.cam_mode[gspca_dev->curr_mode].priv; | |
587 | ||
588 | if (len == 0) | |
589 | return; | |
590 | ||
591 | if (mult == 1) /* mult == 1 means raw bayer */ | |
592 | sd_pkt_scan_bayer(gspca_dev, data, len); | |
593 | else | |
594 | sd_pkt_scan_janggu(gspca_dev, data, len); | |
595 | } | |
596 | ||
c27cea03 HG |
597 | #if defined(CONFIG_INPUT) || defined(CONFIG_INPUT_MODULE) |
598 | static int sd_int_pkt_scan(struct gspca_dev *gspca_dev, u8 *data, int len) | |
599 | { | |
600 | struct sd *sd = (struct sd *)gspca_dev; | |
601 | u8 state; | |
602 | ||
603 | if (len != 2) | |
604 | return -EINVAL; | |
605 | ||
606 | switch (data[0]) { | |
607 | case 0: | |
608 | case 1: | |
609 | state = data[0]; | |
610 | break; | |
611 | default: | |
612 | return -EINVAL; | |
613 | } | |
614 | if (sd->button_state != state) { | |
615 | input_report_key(gspca_dev->input_dev, KEY_CAMERA, state); | |
616 | input_sync(gspca_dev->input_dev); | |
617 | sd->button_state = state; | |
618 | } | |
619 | ||
620 | return 0; | |
621 | } | |
622 | #endif | |
623 | ||
5262eeec HV |
624 | static int sd_s_ctrl(struct v4l2_ctrl *ctrl) |
625 | { | |
626 | struct gspca_dev *gspca_dev = | |
627 | container_of(ctrl->handler, struct gspca_dev, ctrl_handler); | |
628 | struct sd *sd = (struct sd *)gspca_dev; | |
629 | ||
630 | gspca_dev->usb_err = 0; | |
631 | ||
632 | if (!gspca_dev->streaming) | |
633 | return 0; | |
634 | ||
635 | switch (ctrl->id) { | |
636 | case V4L2_CID_BRIGHTNESS: | |
637 | setbrightness(gspca_dev, ctrl->val); | |
638 | break; | |
639 | case V4L2_CID_GAIN: | |
640 | setgain(gspca_dev, ctrl->val); | |
641 | break; | |
642 | case V4L2_CID_EXPOSURE: | |
643 | setexposure(gspca_dev, ctrl->val, sd->freq->val); | |
644 | break; | |
645 | } | |
646 | return gspca_dev->usb_err; | |
647 | } | |
648 | ||
649 | static const struct v4l2_ctrl_ops sd_ctrl_ops = { | |
650 | .s_ctrl = sd_s_ctrl, | |
651 | }; | |
652 | ||
653 | static int sd_init_controls(struct gspca_dev *gspca_dev) | |
654 | { | |
655 | struct sd *sd = (struct sd *)gspca_dev; | |
656 | struct v4l2_ctrl_handler *hdl = &gspca_dev->ctrl_handler; | |
657 | ||
658 | gspca_dev->vdev.ctrl_handler = hdl; | |
659 | v4l2_ctrl_handler_init(hdl, 4); | |
660 | if (sd->has_brightness) | |
661 | v4l2_ctrl_new_std(hdl, &sd_ctrl_ops, | |
662 | V4L2_CID_BRIGHTNESS, 0, 255, 1, 15); | |
663 | /* max is really 63 but > 50 is not pretty */ | |
664 | v4l2_ctrl_new_std(hdl, &sd_ctrl_ops, | |
665 | V4L2_CID_GAIN, 0, 50, 1, 25); | |
666 | sd->exposure = v4l2_ctrl_new_std(hdl, &sd_ctrl_ops, | |
667 | V4L2_CID_EXPOSURE, 0, 32767, 1, 15000); | |
668 | sd->freq = v4l2_ctrl_new_std_menu(hdl, &sd_ctrl_ops, | |
669 | V4L2_CID_POWER_LINE_FREQUENCY, | |
670 | V4L2_CID_POWER_LINE_FREQUENCY_60HZ, 0, 0); | |
671 | ||
672 | if (hdl->error) { | |
673 | pr_err("Could not initialize controls\n"); | |
674 | return hdl->error; | |
675 | } | |
676 | v4l2_ctrl_cluster(2, &sd->exposure); | |
677 | return 0; | |
678 | } | |
679 | ||
c27cea03 HG |
680 | /* sub-driver description */ |
681 | static const struct sd_desc sd_desc = { | |
682 | .name = MODULE_NAME, | |
c27cea03 HG |
683 | .config = sd_config, |
684 | .init = sd_init, | |
5262eeec | 685 | .init_controls = sd_init_controls, |
6121ca57 | 686 | .isoc_init = sd_isoc_init, |
c27cea03 HG |
687 | .start = sd_start, |
688 | .stopN = sd_stopN, | |
689 | .dq_callback = sd_dq_callback, | |
690 | .pkt_scan = sd_pkt_scan, | |
c27cea03 HG |
691 | #if defined(CONFIG_INPUT) || defined(CONFIG_INPUT_MODULE) |
692 | .int_pkt_scan = sd_int_pkt_scan, | |
693 | #endif | |
694 | }; | |
695 | ||
696 | /* -- module initialisation -- */ | |
697 | static const struct usb_device_id device_table[] = { | |
698 | {USB_DEVICE(0x03e8, 0x0004)}, /* Endpoints/Aox SE401 */ | |
699 | {USB_DEVICE(0x0471, 0x030b)}, /* Philips PCVC665K */ | |
700 | {USB_DEVICE(0x047d, 0x5001)}, /* Kensington 67014 */ | |
701 | {USB_DEVICE(0x047d, 0x5002)}, /* Kensington 6701(5/7) */ | |
702 | {USB_DEVICE(0x047d, 0x5003)}, /* Kensington 67016 */ | |
703 | {} | |
704 | }; | |
705 | MODULE_DEVICE_TABLE(usb, device_table); | |
706 | ||
707 | /* -- device connect -- */ | |
708 | static int sd_probe(struct usb_interface *intf, | |
709 | const struct usb_device_id *id) | |
710 | { | |
711 | return gspca_dev_probe(intf, id, &sd_desc, sizeof(struct sd), | |
712 | THIS_MODULE); | |
713 | } | |
714 | ||
715 | static int sd_pre_reset(struct usb_interface *intf) | |
716 | { | |
717 | return 0; | |
718 | } | |
719 | ||
720 | static int sd_post_reset(struct usb_interface *intf) | |
721 | { | |
722 | return 0; | |
723 | } | |
724 | ||
725 | static struct usb_driver sd_driver = { | |
726 | .name = MODULE_NAME, | |
727 | .id_table = device_table, | |
728 | .probe = sd_probe, | |
729 | .disconnect = gspca_disconnect, | |
730 | #ifdef CONFIG_PM | |
731 | .suspend = gspca_suspend, | |
732 | .resume = gspca_resume, | |
8bb58964 | 733 | .reset_resume = gspca_resume, |
c27cea03 HG |
734 | #endif |
735 | .pre_reset = sd_pre_reset, | |
736 | .post_reset = sd_post_reset, | |
737 | }; | |
738 | ||
ecb3b2b3 | 739 | module_usb_driver(sd_driver); |