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63eb9546 JFM |
1 | /* |
2 | * Main USB camera driver | |
3 | * | |
59929cef | 4 | * Copyright (C) 2008-2011 Jean-François Moine <http://moinejf.free.fr> |
63eb9546 | 5 | * |
0274d42e MN |
6 | * Camera button input handling by Márton Németh |
7 | * Copyright (C) 2009-2010 Márton Németh <nm127@freemail.hu> | |
8 | * | |
63eb9546 JFM |
9 | * This program is free software; you can redistribute it and/or modify it |
10 | * under the terms of the GNU General Public License as published by the | |
11 | * Free Software Foundation; either version 2 of the License, or (at your | |
12 | * option) any later version. | |
13 | * | |
14 | * This program is distributed in the hope that it will be useful, but | |
15 | * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY | |
16 | * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
17 | * for more details. | |
18 | * | |
19 | * You should have received a copy of the GNU General Public License | |
20 | * along with this program; if not, write to the Free Software Foundation, | |
21 | * Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
22 | */ | |
23 | ||
133a9fe9 JP |
24 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
25 | ||
f22123fa | 26 | #define GSPCA_VERSION "2.14.0" |
63eb9546 JFM |
27 | |
28 | #include <linux/init.h> | |
29 | #include <linux/fs.h> | |
30 | #include <linux/vmalloc.h> | |
31 | #include <linux/sched.h> | |
32 | #include <linux/slab.h> | |
33 | #include <linux/mm.h> | |
34 | #include <linux/string.h> | |
35 | #include <linux/pagemap.h> | |
956e42d2 | 36 | #include <linux/io.h> |
63eb9546 | 37 | #include <asm/page.h> |
956e42d2 | 38 | #include <linux/uaccess.h> |
2f51d00f | 39 | #include <linux/ktime.h> |
35ea11ff | 40 | #include <media/v4l2-ioctl.h> |
63eb9546 JFM |
41 | |
42 | #include "gspca.h" | |
43 | ||
f7628015 | 44 | #if defined(CONFIG_INPUT) || defined(CONFIG_INPUT_MODULE) |
0274d42e MN |
45 | #include <linux/input.h> |
46 | #include <linux/usb/input.h> | |
e070bf9e | 47 | #endif |
0274d42e | 48 | |
d43fa32f | 49 | /* global values */ |
8fee8453 JFM |
50 | #define DEF_NURBS 3 /* default number of URBs */ |
51 | #if DEF_NURBS > MAX_NURBS | |
52 | #error "DEF_NURBS too big" | |
53 | #endif | |
d43fa32f | 54 | |
27c6f9e5 | 55 | MODULE_AUTHOR("Jean-François Moine <http://moinejf.free.fr>"); |
63eb9546 JFM |
56 | MODULE_DESCRIPTION("GSPCA USB Camera Driver"); |
57 | MODULE_LICENSE("GPL"); | |
f22123fa | 58 | MODULE_VERSION(GSPCA_VERSION); |
63eb9546 | 59 | |
335b3f88 | 60 | #ifdef GSPCA_DEBUG |
63eb9546 JFM |
61 | int gspca_debug = D_ERR | D_PROBE; |
62 | EXPORT_SYMBOL(gspca_debug); | |
63 | ||
64 | static void PDEBUG_MODE(char *txt, __u32 pixfmt, int w, int h) | |
65 | { | |
66 | if ((pixfmt >> 24) >= '0' && (pixfmt >> 24) <= 'z') { | |
67 | PDEBUG(D_CONF|D_STREAM, "%s %c%c%c%c %dx%d", | |
68 | txt, | |
69 | pixfmt & 0xff, | |
70 | (pixfmt >> 8) & 0xff, | |
71 | (pixfmt >> 16) & 0xff, | |
72 | pixfmt >> 24, | |
73 | w, h); | |
74 | } else { | |
75 | PDEBUG(D_CONF|D_STREAM, "%s 0x%08x %dx%d", | |
76 | txt, | |
77 | pixfmt, | |
78 | w, h); | |
79 | } | |
80 | } | |
81 | #else | |
82 | #define PDEBUG_MODE(txt, pixfmt, w, h) | |
83 | #endif | |
84 | ||
77ee3318 | 85 | /* specific memory types - !! should be different from V4L2_MEMORY_xxx */ |
d43fa32f JFM |
86 | #define GSPCA_MEMORY_NO 0 /* V4L2_MEMORY_xxx starts from 1 */ |
87 | #define GSPCA_MEMORY_READ 7 | |
88 | ||
d43fa32f | 89 | #define BUF_ALL_FLAGS (V4L2_BUF_FLAG_QUEUED | V4L2_BUF_FLAG_DONE) |
d43fa32f | 90 | |
63eb9546 JFM |
91 | /* |
92 | * VMA operations. | |
93 | */ | |
94 | static void gspca_vm_open(struct vm_area_struct *vma) | |
95 | { | |
96 | struct gspca_frame *frame = vma->vm_private_data; | |
97 | ||
98 | frame->vma_use_count++; | |
99 | frame->v4l2_buf.flags |= V4L2_BUF_FLAG_MAPPED; | |
100 | } | |
101 | ||
102 | static void gspca_vm_close(struct vm_area_struct *vma) | |
103 | { | |
104 | struct gspca_frame *frame = vma->vm_private_data; | |
105 | ||
106 | if (--frame->vma_use_count <= 0) | |
107 | frame->v4l2_buf.flags &= ~V4L2_BUF_FLAG_MAPPED; | |
108 | } | |
109 | ||
f0f37e2f | 110 | static const struct vm_operations_struct gspca_vm_ops = { |
63eb9546 JFM |
111 | .open = gspca_vm_open, |
112 | .close = gspca_vm_close, | |
113 | }; | |
114 | ||
0274d42e MN |
115 | /* |
116 | * Input and interrupt endpoint handling functions | |
117 | */ | |
f7628015 | 118 | #if defined(CONFIG_INPUT) || defined(CONFIG_INPUT_MODULE) |
0274d42e MN |
119 | static void int_irq(struct urb *urb) |
120 | { | |
121 | struct gspca_dev *gspca_dev = (struct gspca_dev *) urb->context; | |
122 | int ret; | |
123 | ||
124 | ret = urb->status; | |
125 | switch (ret) { | |
126 | case 0: | |
127 | if (gspca_dev->sd_desc->int_pkt_scan(gspca_dev, | |
128 | urb->transfer_buffer, urb->actual_length) < 0) { | |
129 | PDEBUG(D_ERR, "Unknown packet received"); | |
130 | } | |
131 | break; | |
132 | ||
133 | case -ENOENT: | |
134 | case -ECONNRESET: | |
135 | case -ENODEV: | |
136 | case -ESHUTDOWN: | |
137 | /* Stop is requested either by software or hardware is gone, | |
138 | * keep the ret value non-zero and don't resubmit later. | |
139 | */ | |
140 | break; | |
141 | ||
142 | default: | |
143 | PDEBUG(D_ERR, "URB error %i, resubmitting", urb->status); | |
144 | urb->status = 0; | |
145 | ret = 0; | |
146 | } | |
147 | ||
148 | if (ret == 0) { | |
149 | ret = usb_submit_urb(urb, GFP_ATOMIC); | |
150 | if (ret < 0) | |
133a9fe9 | 151 | pr_err("Resubmit URB failed with error %i\n", ret); |
0274d42e MN |
152 | } |
153 | } | |
154 | ||
155 | static int gspca_input_connect(struct gspca_dev *dev) | |
156 | { | |
157 | struct input_dev *input_dev; | |
158 | int err = 0; | |
159 | ||
160 | dev->input_dev = NULL; | |
ac82f59f | 161 | if (dev->sd_desc->int_pkt_scan || dev->sd_desc->other_input) { |
0274d42e MN |
162 | input_dev = input_allocate_device(); |
163 | if (!input_dev) | |
164 | return -ENOMEM; | |
165 | ||
166 | usb_make_path(dev->dev, dev->phys, sizeof(dev->phys)); | |
167 | strlcat(dev->phys, "/input0", sizeof(dev->phys)); | |
168 | ||
169 | input_dev->name = dev->sd_desc->name; | |
170 | input_dev->phys = dev->phys; | |
171 | ||
172 | usb_to_input_id(dev->dev, &input_dev->id); | |
173 | ||
174 | input_dev->evbit[0] = BIT_MASK(EV_KEY); | |
175 | input_dev->keybit[BIT_WORD(KEY_CAMERA)] = BIT_MASK(KEY_CAMERA); | |
176 | input_dev->dev.parent = &dev->dev->dev; | |
177 | ||
178 | err = input_register_device(input_dev); | |
179 | if (err) { | |
133a9fe9 JP |
180 | pr_err("Input device registration failed with error %i\n", |
181 | err); | |
0274d42e MN |
182 | input_dev->dev.parent = NULL; |
183 | input_free_device(input_dev); | |
184 | } else { | |
185 | dev->input_dev = input_dev; | |
186 | } | |
10ee2402 | 187 | } |
0274d42e MN |
188 | |
189 | return err; | |
190 | } | |
191 | ||
192 | static int alloc_and_submit_int_urb(struct gspca_dev *gspca_dev, | |
193 | struct usb_endpoint_descriptor *ep) | |
194 | { | |
195 | unsigned int buffer_len; | |
196 | int interval; | |
197 | struct urb *urb; | |
198 | struct usb_device *dev; | |
199 | void *buffer = NULL; | |
200 | int ret = -EINVAL; | |
201 | ||
b26d6e21 | 202 | buffer_len = le16_to_cpu(ep->wMaxPacketSize); |
0274d42e | 203 | interval = ep->bInterval; |
c4dc692c | 204 | PDEBUG(D_CONF, "found int in endpoint: 0x%x, " |
0274d42e MN |
205 | "buffer_len=%u, interval=%u", |
206 | ep->bEndpointAddress, buffer_len, interval); | |
207 | ||
208 | dev = gspca_dev->dev; | |
209 | ||
210 | urb = usb_alloc_urb(0, GFP_KERNEL); | |
211 | if (!urb) { | |
212 | ret = -ENOMEM; | |
213 | goto error; | |
214 | } | |
215 | ||
7a9b1492 | 216 | buffer = usb_alloc_coherent(dev, buffer_len, |
0274d42e MN |
217 | GFP_KERNEL, &urb->transfer_dma); |
218 | if (!buffer) { | |
219 | ret = -ENOMEM; | |
220 | goto error_buffer; | |
221 | } | |
222 | usb_fill_int_urb(urb, dev, | |
223 | usb_rcvintpipe(dev, ep->bEndpointAddress), | |
224 | buffer, buffer_len, | |
225 | int_irq, (void *)gspca_dev, interval); | |
882787ff | 226 | urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; |
0274d42e MN |
227 | ret = usb_submit_urb(urb, GFP_KERNEL); |
228 | if (ret < 0) { | |
c4dc692c | 229 | PDEBUG(D_ERR, "submit int URB failed with error %i", ret); |
0274d42e MN |
230 | goto error_submit; |
231 | } | |
2661da47 | 232 | gspca_dev->int_urb = urb; |
0274d42e MN |
233 | return ret; |
234 | ||
235 | error_submit: | |
997ea58e DM |
236 | usb_free_coherent(dev, |
237 | urb->transfer_buffer_length, | |
238 | urb->transfer_buffer, | |
239 | urb->transfer_dma); | |
0274d42e MN |
240 | error_buffer: |
241 | usb_free_urb(urb); | |
242 | error: | |
243 | return ret; | |
244 | } | |
245 | ||
10ee2402 | 246 | static void gspca_input_create_urb(struct gspca_dev *gspca_dev) |
0274d42e | 247 | { |
0274d42e MN |
248 | struct usb_interface *intf; |
249 | struct usb_host_interface *intf_desc; | |
250 | struct usb_endpoint_descriptor *ep; | |
251 | int i; | |
252 | ||
253 | if (gspca_dev->sd_desc->int_pkt_scan) { | |
254 | intf = usb_ifnum_to_if(gspca_dev->dev, gspca_dev->iface); | |
255 | intf_desc = intf->cur_altsetting; | |
256 | for (i = 0; i < intf_desc->desc.bNumEndpoints; i++) { | |
257 | ep = &intf_desc->endpoint[i].desc; | |
258 | if (usb_endpoint_dir_in(ep) && | |
259 | usb_endpoint_xfer_int(ep)) { | |
260 | ||
10ee2402 | 261 | alloc_and_submit_int_urb(gspca_dev, ep); |
0274d42e MN |
262 | break; |
263 | } | |
264 | } | |
265 | } | |
0274d42e MN |
266 | } |
267 | ||
268 | static void gspca_input_destroy_urb(struct gspca_dev *gspca_dev) | |
269 | { | |
270 | struct urb *urb; | |
271 | ||
272 | urb = gspca_dev->int_urb; | |
273 | if (urb) { | |
274 | gspca_dev->int_urb = NULL; | |
275 | usb_kill_urb(urb); | |
997ea58e DM |
276 | usb_free_coherent(gspca_dev->dev, |
277 | urb->transfer_buffer_length, | |
278 | urb->transfer_buffer, | |
279 | urb->transfer_dma); | |
0274d42e MN |
280 | usb_free_urb(urb); |
281 | } | |
282 | } | |
f7628015 RD |
283 | #else |
284 | static inline void gspca_input_destroy_urb(struct gspca_dev *gspca_dev) | |
285 | { | |
286 | } | |
287 | ||
288 | static inline void gspca_input_create_urb(struct gspca_dev *gspca_dev) | |
289 | { | |
290 | } | |
291 | ||
292 | static inline int gspca_input_connect(struct gspca_dev *dev) | |
293 | { | |
294 | return 0; | |
295 | } | |
0274d42e MN |
296 | #endif |
297 | ||
63eb9546 | 298 | /* |
d43fa32f | 299 | * fill a video frame from an URB and resubmit |
63eb9546 | 300 | */ |
d43fa32f JFM |
301 | static void fill_frame(struct gspca_dev *gspca_dev, |
302 | struct urb *urb) | |
63eb9546 | 303 | { |
8d584a53 | 304 | u8 *data; /* address of data in the iso message */ |
1b60e1ad | 305 | int i, len, st; |
63eb9546 JFM |
306 | cam_pkt_op pkt_scan; |
307 | ||
6a7eba24 | 308 | if (urb->status != 0) { |
090264e5 JFM |
309 | if (urb->status == -ESHUTDOWN) |
310 | return; /* disconnection */ | |
62ee8eee | 311 | #ifdef CONFIG_PM |
6a540bdf HG |
312 | if (gspca_dev->frozen) |
313 | return; | |
62ee8eee | 314 | #endif |
6a540bdf | 315 | PDEBUG(D_ERR|D_PACK, "urb status: %d", urb->status); |
8157852f | 316 | urb->status = 0; |
bf926adf | 317 | goto resubmit; |
6a7eba24 | 318 | } |
63eb9546 JFM |
319 | pkt_scan = gspca_dev->sd_desc->pkt_scan; |
320 | for (i = 0; i < urb->number_of_packets; i++) { | |
95f18be2 | 321 | len = urb->iso_frame_desc[i].actual_length; |
63eb9546 | 322 | |
63eb9546 | 323 | /* check the packet status and length */ |
63eb9546 JFM |
324 | st = urb->iso_frame_desc[i].status; |
325 | if (st) { | |
133a9fe9 JP |
326 | pr_err("ISOC data error: [%d] len=%d, status=%d\n", |
327 | i, len, st); | |
63eb9546 JFM |
328 | gspca_dev->last_packet_type = DISCARD_PACKET; |
329 | continue; | |
330 | } | |
76ebc16b JFM |
331 | if (len == 0) { |
332 | if (gspca_dev->empty_packet == 0) | |
333 | gspca_dev->empty_packet = 1; | |
334 | continue; | |
335 | } | |
63eb9546 JFM |
336 | |
337 | /* let the packet be analyzed by the subdriver */ | |
338 | PDEBUG(D_PACK, "packet [%d] o:%d l:%d", | |
339 | i, urb->iso_frame_desc[i].offset, len); | |
8d584a53 | 340 | data = (u8 *) urb->transfer_buffer |
63eb9546 | 341 | + urb->iso_frame_desc[i].offset; |
76dd272b | 342 | pkt_scan(gspca_dev, data, len); |
63eb9546 JFM |
343 | } |
344 | ||
bf926adf | 345 | resubmit: |
63eb9546 | 346 | /* resubmit the URB */ |
63eb9546 JFM |
347 | st = usb_submit_urb(urb, GFP_ATOMIC); |
348 | if (st < 0) | |
133a9fe9 | 349 | pr_err("usb_submit_urb() ret %d\n", st); |
63eb9546 JFM |
350 | } |
351 | ||
d43fa32f JFM |
352 | /* |
353 | * ISOC message interrupt from the USB device | |
354 | * | |
ac0d6df6 | 355 | * Analyse each packet and call the subdriver for copy to the frame buffer. |
d43fa32f | 356 | */ |
8d584a53 | 357 | static void isoc_irq(struct urb *urb) |
d43fa32f JFM |
358 | { |
359 | struct gspca_dev *gspca_dev = (struct gspca_dev *) urb->context; | |
360 | ||
3647fea8 | 361 | PDEBUG(D_PACK, "isoc irq"); |
d43fa32f JFM |
362 | if (!gspca_dev->streaming) |
363 | return; | |
364 | fill_frame(gspca_dev, urb); | |
365 | } | |
366 | ||
0be01004 JFM |
367 | /* |
368 | * bulk message interrupt from the USB device | |
369 | */ | |
8d584a53 | 370 | static void bulk_irq(struct urb *urb) |
0be01004 JFM |
371 | { |
372 | struct gspca_dev *gspca_dev = (struct gspca_dev *) urb->context; | |
dff369aa | 373 | int st; |
0be01004 JFM |
374 | |
375 | PDEBUG(D_PACK, "bulk irq"); | |
376 | if (!gspca_dev->streaming) | |
377 | return; | |
880ae24d JFM |
378 | switch (urb->status) { |
379 | case 0: | |
380 | break; | |
090264e5 JFM |
381 | case -ESHUTDOWN: |
382 | return; /* disconnection */ | |
880ae24d | 383 | default: |
0be01004 | 384 | #ifdef CONFIG_PM |
6a540bdf HG |
385 | if (gspca_dev->frozen) |
386 | return; | |
0be01004 | 387 | #endif |
6a540bdf | 388 | PDEBUG(D_ERR|D_PACK, "urb status: %d", urb->status); |
8157852f | 389 | urb->status = 0; |
bf926adf | 390 | goto resubmit; |
0be01004 JFM |
391 | } |
392 | ||
d131c3c9 JFM |
393 | PDEBUG(D_PACK, "packet l:%d", urb->actual_length); |
394 | gspca_dev->sd_desc->pkt_scan(gspca_dev, | |
d131c3c9 JFM |
395 | urb->transfer_buffer, |
396 | urb->actual_length); | |
dff369aa | 397 | |
bf926adf | 398 | resubmit: |
dff369aa AO |
399 | /* resubmit the URB */ |
400 | if (gspca_dev->cam.bulk_nurbs != 0) { | |
401 | st = usb_submit_urb(urb, GFP_ATOMIC); | |
402 | if (st < 0) | |
133a9fe9 | 403 | pr_err("usb_submit_urb() ret %d\n", st); |
dff369aa | 404 | } |
0be01004 JFM |
405 | } |
406 | ||
63eb9546 JFM |
407 | /* |
408 | * add data to the current frame | |
409 | * | |
ac0d6df6 JFM |
410 | * This function is called by the subdrivers at interrupt level. |
411 | * | |
63eb9546 JFM |
412 | * To build a frame, these ones must add |
413 | * - one FIRST_PACKET | |
414 | * - 0 or many INTER_PACKETs | |
415 | * - one LAST_PACKET | |
416 | * DISCARD_PACKET invalidates the whole frame. | |
63eb9546 | 417 | */ |
76dd272b JFM |
418 | void gspca_frame_add(struct gspca_dev *gspca_dev, |
419 | enum gspca_packet_type packet_type, | |
420 | const u8 *data, | |
421 | int len) | |
63eb9546 | 422 | { |
3ec342f2 | 423 | struct gspca_frame *frame; |
63eb9546 JFM |
424 | int i, j; |
425 | ||
e2997a72 | 426 | PDEBUG(D_PACK, "add t:%d l:%d", packet_type, len); |
d131c3c9 | 427 | |
63eb9546 | 428 | if (packet_type == FIRST_PACKET) { |
f7059eaa JFM |
429 | i = atomic_read(&gspca_dev->fr_i); |
430 | ||
431 | /* if there are no queued buffer, discard the whole frame */ | |
432 | if (i == atomic_read(&gspca_dev->fr_q)) { | |
433 | gspca_dev->last_packet_type = DISCARD_PACKET; | |
2e0544a8 | 434 | gspca_dev->sequence++; |
f7059eaa JFM |
435 | return; |
436 | } | |
b192ca98 JFM |
437 | j = gspca_dev->fr_queue[i]; |
438 | frame = &gspca_dev->frame[j]; | |
2f51d00f | 439 | frame->v4l2_buf.timestamp = ktime_to_timeval(ktime_get()); |
2e0544a8 | 440 | frame->v4l2_buf.sequence = gspca_dev->sequence++; |
f7059eaa | 441 | gspca_dev->image = frame->data; |
b192ca98 | 442 | gspca_dev->image_len = 0; |
fe988f56 JFM |
443 | } else { |
444 | switch (gspca_dev->last_packet_type) { | |
445 | case DISCARD_PACKET: | |
fa4376d2 | 446 | if (packet_type == LAST_PACKET) { |
fe988f56 | 447 | gspca_dev->last_packet_type = packet_type; |
fa4376d2 HG |
448 | gspca_dev->image = NULL; |
449 | gspca_dev->image_len = 0; | |
450 | } | |
fe988f56 JFM |
451 | return; |
452 | case LAST_PACKET: | |
453 | return; | |
454 | } | |
d43fa32f | 455 | } |
63eb9546 | 456 | |
d43fa32f | 457 | /* append the packet to the frame buffer */ |
63eb9546 | 458 | if (len > 0) { |
b192ca98 JFM |
459 | if (gspca_dev->image_len + len > gspca_dev->frsz) { |
460 | PDEBUG(D_ERR|D_PACK, "frame overflow %d > %d", | |
461 | gspca_dev->image_len + len, | |
462 | gspca_dev->frsz); | |
63eb9546 JFM |
463 | packet_type = DISCARD_PACKET; |
464 | } else { | |
fe988f56 JFM |
465 | /* !! image is NULL only when last pkt is LAST or DISCARD |
466 | if (gspca_dev->image == NULL) { | |
133a9fe9 | 467 | pr_err("gspca_frame_add() image == NULL\n"); |
fe988f56 JFM |
468 | return; |
469 | } | |
470 | */ | |
b192ca98 JFM |
471 | memcpy(gspca_dev->image + gspca_dev->image_len, |
472 | data, len); | |
473 | gspca_dev->image_len += len; | |
63eb9546 JFM |
474 | } |
475 | } | |
476 | gspca_dev->last_packet_type = packet_type; | |
477 | ||
f7059eaa JFM |
478 | /* if last packet, invalidate packet concatenation until |
479 | * next first packet, wake up the application and advance | |
480 | * in the queue */ | |
63eb9546 | 481 | if (packet_type == LAST_PACKET) { |
f7059eaa | 482 | i = atomic_read(&gspca_dev->fr_i); |
b192ca98 JFM |
483 | j = gspca_dev->fr_queue[i]; |
484 | frame = &gspca_dev->frame[j]; | |
485 | frame->v4l2_buf.bytesused = gspca_dev->image_len; | |
02bbcb9d JFM |
486 | frame->v4l2_buf.flags = (frame->v4l2_buf.flags |
487 | | V4L2_BUF_FLAG_DONE) | |
488 | & ~V4L2_BUF_FLAG_QUEUED; | |
f7059eaa JFM |
489 | i = (i + 1) % GSPCA_MAX_FRAMES; |
490 | atomic_set(&gspca_dev->fr_i, i); | |
63eb9546 | 491 | wake_up_interruptible(&gspca_dev->wq); /* event = new frame */ |
f7059eaa JFM |
492 | PDEBUG(D_FRAM, "frame complete len:%d", |
493 | frame->v4l2_buf.bytesused); | |
494 | gspca_dev->image = NULL; | |
495 | gspca_dev->image_len = 0; | |
63eb9546 | 496 | } |
63eb9546 JFM |
497 | } |
498 | EXPORT_SYMBOL(gspca_frame_add); | |
499 | ||
d642de2e HG |
500 | static int frame_alloc(struct gspca_dev *gspca_dev, struct file *file, |
501 | enum v4l2_memory memory, unsigned int count) | |
63eb9546 | 502 | { |
d43fa32f JFM |
503 | struct gspca_frame *frame; |
504 | unsigned int frsz; | |
505 | int i; | |
63eb9546 | 506 | |
c2446b3e JFM |
507 | i = gspca_dev->curr_mode; |
508 | frsz = gspca_dev->cam.cam_mode[i].sizeimage; | |
63eb9546 | 509 | PDEBUG(D_STREAM, "frame alloc frsz: %d", frsz); |
63eb9546 | 510 | frsz = PAGE_ALIGN(frsz); |
f7059eaa JFM |
511 | if (count >= GSPCA_MAX_FRAMES) |
512 | count = GSPCA_MAX_FRAMES - 1; | |
e795d912 | 513 | gspca_dev->frbuf = vmalloc_32(frsz * count); |
ac0d6df6 | 514 | if (!gspca_dev->frbuf) { |
133a9fe9 | 515 | pr_err("frame alloc failed\n"); |
ac0d6df6 | 516 | return -ENOMEM; |
63eb9546 | 517 | } |
d642de2e HG |
518 | gspca_dev->capt_file = file; |
519 | gspca_dev->memory = memory; | |
520 | gspca_dev->frsz = frsz; | |
63eb9546 JFM |
521 | gspca_dev->nframes = count; |
522 | for (i = 0; i < count; i++) { | |
d43fa32f JFM |
523 | frame = &gspca_dev->frame[i]; |
524 | frame->v4l2_buf.index = i; | |
525 | frame->v4l2_buf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; | |
526 | frame->v4l2_buf.flags = 0; | |
527 | frame->v4l2_buf.field = V4L2_FIELD_NONE; | |
528 | frame->v4l2_buf.length = frsz; | |
d642de2e | 529 | frame->v4l2_buf.memory = memory; |
d43fa32f | 530 | frame->v4l2_buf.sequence = 0; |
b192ca98 | 531 | frame->data = gspca_dev->frbuf + i * frsz; |
ac0d6df6 | 532 | frame->v4l2_buf.m.offset = i * frsz; |
63eb9546 | 533 | } |
f7059eaa JFM |
534 | atomic_set(&gspca_dev->fr_q, 0); |
535 | atomic_set(&gspca_dev->fr_i, 0); | |
536 | gspca_dev->fr_o = 0; | |
d43fa32f | 537 | return 0; |
63eb9546 JFM |
538 | } |
539 | ||
540 | static void frame_free(struct gspca_dev *gspca_dev) | |
541 | { | |
542 | int i; | |
543 | ||
544 | PDEBUG(D_STREAM, "frame free"); | |
efab8211 | 545 | if (gspca_dev->frbuf != NULL) { |
e795d912 | 546 | vfree(gspca_dev->frbuf); |
63eb9546 JFM |
547 | gspca_dev->frbuf = NULL; |
548 | for (i = 0; i < gspca_dev->nframes; i++) | |
549 | gspca_dev->frame[i].data = NULL; | |
550 | } | |
551 | gspca_dev->nframes = 0; | |
d642de2e HG |
552 | gspca_dev->frsz = 0; |
553 | gspca_dev->capt_file = NULL; | |
554 | gspca_dev->memory = GSPCA_MEMORY_NO; | |
63eb9546 JFM |
555 | } |
556 | ||
d43fa32f | 557 | static void destroy_urbs(struct gspca_dev *gspca_dev) |
63eb9546 JFM |
558 | { |
559 | struct urb *urb; | |
560 | unsigned int i; | |
561 | ||
562 | PDEBUG(D_STREAM, "kill transfer"); | |
44732819 | 563 | for (i = 0; i < MAX_NURBS; i++) { |
4aa0d037 | 564 | urb = gspca_dev->urb[i]; |
63eb9546 | 565 | if (urb == NULL) |
d43fa32f | 566 | break; |
63eb9546 | 567 | |
4aa0d037 | 568 | gspca_dev->urb[i] = NULL; |
090264e5 | 569 | usb_kill_urb(urb); |
efab8211 | 570 | if (urb->transfer_buffer != NULL) |
997ea58e DM |
571 | usb_free_coherent(gspca_dev->dev, |
572 | urb->transfer_buffer_length, | |
573 | urb->transfer_buffer, | |
574 | urb->transfer_dma); | |
63eb9546 JFM |
575 | usb_free_urb(urb); |
576 | } | |
63eb9546 JFM |
577 | } |
578 | ||
e4dac289 JFM |
579 | static int gspca_set_alt0(struct gspca_dev *gspca_dev) |
580 | { | |
581 | int ret; | |
582 | ||
583 | if (gspca_dev->alt == 0) | |
584 | return 0; | |
585 | ret = usb_set_interface(gspca_dev->dev, gspca_dev->iface, 0); | |
586 | if (ret < 0) | |
133a9fe9 | 587 | pr_err("set alt 0 err %d\n", ret); |
e4dac289 JFM |
588 | return ret; |
589 | } | |
590 | ||
591 | /* Note: both the queue and the usb locks should be held when calling this */ | |
592 | static void gspca_stream_off(struct gspca_dev *gspca_dev) | |
593 | { | |
594 | gspca_dev->streaming = 0; | |
595 | if (gspca_dev->present) { | |
596 | if (gspca_dev->sd_desc->stopN) | |
597 | gspca_dev->sd_desc->stopN(gspca_dev); | |
598 | destroy_urbs(gspca_dev); | |
599 | gspca_input_destroy_urb(gspca_dev); | |
600 | gspca_set_alt0(gspca_dev); | |
601 | gspca_input_create_urb(gspca_dev); | |
602 | } | |
603 | ||
604 | /* always call stop0 to free the subdriver's resources */ | |
605 | if (gspca_dev->sd_desc->stop0) | |
606 | gspca_dev->sd_desc->stop0(gspca_dev); | |
607 | PDEBUG(D_STREAM, "stream off OK"); | |
608 | } | |
609 | ||
63eb9546 | 610 | /* |
219423c1 | 611 | * look for an input transfer endpoint in an alternate setting |
63eb9546 | 612 | */ |
0be01004 | 613 | static struct usb_host_endpoint *alt_xfer(struct usb_host_interface *alt, |
6929dc6b | 614 | int xfer) |
63eb9546 JFM |
615 | { |
616 | struct usb_host_endpoint *ep; | |
617 | int i, attr; | |
618 | ||
63eb9546 JFM |
619 | for (i = 0; i < alt->desc.bNumEndpoints; i++) { |
620 | ep = &alt->endpoint[i]; | |
50e06dee | 621 | attr = ep->desc.bmAttributes & USB_ENDPOINT_XFERTYPE_MASK; |
30d35e49 | 622 | if (attr == xfer |
7106225a PC |
623 | && ep->desc.wMaxPacketSize != 0 |
624 | && usb_endpoint_dir_in(&ep->desc)) | |
50e06dee | 625 | return ep; |
63eb9546 JFM |
626 | } |
627 | return NULL; | |
628 | } | |
629 | ||
27b12023 JFM |
630 | /* compute the minimum bandwidth for the current transfer */ |
631 | static u32 which_bandwidth(struct gspca_dev *gspca_dev) | |
632 | { | |
633 | u32 bandwidth; | |
634 | int i; | |
635 | ||
18bef42c | 636 | /* get the (max) image size */ |
27b12023 JFM |
637 | i = gspca_dev->curr_mode; |
638 | bandwidth = gspca_dev->cam.cam_mode[i].sizeimage; | |
639 | ||
18bef42c | 640 | /* if the image is compressed, estimate its mean size */ |
eb3fb7c9 HG |
641 | if (!gspca_dev->cam.needs_full_bandwidth && |
642 | bandwidth < gspca_dev->cam.cam_mode[i].width * | |
27b12023 | 643 | gspca_dev->cam.cam_mode[i].height) |
18bef42c | 644 | bandwidth = bandwidth * 3 / 8; /* 0.375 */ |
27b12023 JFM |
645 | |
646 | /* estimate the frame rate */ | |
647 | if (gspca_dev->sd_desc->get_streamparm) { | |
648 | struct v4l2_streamparm parm; | |
649 | ||
27b12023 JFM |
650 | gspca_dev->sd_desc->get_streamparm(gspca_dev, &parm); |
651 | bandwidth *= parm.parm.capture.timeperframe.denominator; | |
1153f04d | 652 | bandwidth /= parm.parm.capture.timeperframe.numerator; |
27b12023 | 653 | } else { |
18bef42c JFM |
654 | |
655 | /* don't hope more than 15 fps with USB 1.1 and | |
656 | * image resolution >= 640x480 */ | |
657 | if (gspca_dev->width >= 640 | |
658 | && gspca_dev->dev->speed == USB_SPEED_FULL) | |
659 | bandwidth *= 15; /* 15 fps */ | |
660 | else | |
661 | bandwidth *= 30; /* 30 fps */ | |
27b12023 JFM |
662 | } |
663 | ||
664 | PDEBUG(D_STREAM, "min bandwidth: %d", bandwidth); | |
665 | return bandwidth; | |
666 | } | |
667 | ||
668 | /* endpoint table */ | |
669 | #define MAX_ALT 16 | |
670 | struct ep_tb_s { | |
671 | u32 alt; | |
672 | u32 bandwidth; | |
673 | }; | |
674 | ||
63eb9546 | 675 | /* |
27b12023 JFM |
676 | * build the table of the endpoints |
677 | * and compute the minimum bandwidth for the image transfer | |
63eb9546 | 678 | */ |
66957b86 | 679 | static int build_isoc_ep_tb(struct gspca_dev *gspca_dev, |
27b12023 | 680 | struct usb_interface *intf, |
27b12023 | 681 | struct ep_tb_s *ep_tb) |
63eb9546 | 682 | { |
63eb9546 | 683 | struct usb_host_endpoint *ep; |
27b12023 JFM |
684 | int i, j, nbalt, psize, found; |
685 | u32 bandwidth, last_bw; | |
63eb9546 | 686 | |
27b12023 JFM |
687 | nbalt = intf->num_altsetting; |
688 | if (nbalt > MAX_ALT) | |
689 | nbalt = MAX_ALT; /* fixme: should warn */ | |
690 | ||
691 | /* build the endpoint table */ | |
692 | i = 0; | |
693 | last_bw = 0; | |
694 | for (;;) { | |
695 | ep_tb->bandwidth = 2000 * 2000 * 120; | |
696 | found = 0; | |
697 | for (j = 0; j < nbalt; j++) { | |
66957b86 HG |
698 | ep = alt_xfer(&intf->altsetting[j], |
699 | USB_ENDPOINT_XFER_ISOC); | |
27b12023 JFM |
700 | if (ep == NULL) |
701 | continue; | |
d0d3435b HG |
702 | if (ep->desc.bInterval == 0) { |
703 | pr_err("alt %d iso endp with 0 interval\n", j); | |
704 | continue; | |
705 | } | |
27b12023 | 706 | psize = le16_to_cpu(ep->desc.wMaxPacketSize); |
66957b86 | 707 | psize = (psize & 0x07ff) * (1 + ((psize >> 11) & 3)); |
d0d3435b | 708 | bandwidth = psize * 1000; |
27b12023 JFM |
709 | if (gspca_dev->dev->speed == USB_SPEED_HIGH |
710 | || gspca_dev->dev->speed == USB_SPEED_SUPER) | |
711 | bandwidth *= 8; | |
d0d3435b | 712 | bandwidth /= 1 << (ep->desc.bInterval - 1); |
27b12023 JFM |
713 | if (bandwidth <= last_bw) |
714 | continue; | |
715 | if (bandwidth < ep_tb->bandwidth) { | |
716 | ep_tb->bandwidth = bandwidth; | |
717 | ep_tb->alt = j; | |
718 | found = 1; | |
719 | } | |
95d9142c | 720 | } |
27b12023 JFM |
721 | if (!found) |
722 | break; | |
723 | PDEBUG(D_STREAM, "alt %d bandwidth %d", | |
724 | ep_tb->alt, ep_tb->bandwidth); | |
725 | last_bw = ep_tb->bandwidth; | |
726 | i++; | |
727 | ep_tb++; | |
728 | } | |
729 | ||
2d39059a HG |
730 | /* |
731 | * If the camera: | |
732 | * has a usb audio class interface (a built in usb mic); and | |
733 | * is a usb 1 full speed device; and | |
734 | * uses the max full speed iso bandwidth; and | |
735 | * and has more than 1 alt setting | |
736 | * then skip the highest alt setting to spare bandwidth for the mic | |
737 | */ | |
738 | if (gspca_dev->audio && | |
739 | gspca_dev->dev->speed == USB_SPEED_FULL && | |
740 | last_bw >= 1000000 && | |
741 | i > 1) { | |
742 | PDEBUG(D_STREAM, "dev has usb audio, skipping highest alt"); | |
743 | i--; | |
744 | ep_tb--; | |
745 | } | |
746 | ||
27b12023 JFM |
747 | /* get the requested bandwidth and start at the highest atlsetting */ |
748 | bandwidth = which_bandwidth(gspca_dev); | |
749 | ep_tb--; | |
750 | while (i > 1) { | |
751 | ep_tb--; | |
752 | if (ep_tb->bandwidth < bandwidth) | |
753 | break; | |
754 | i--; | |
63eb9546 | 755 | } |
27b12023 | 756 | return i; |
63eb9546 JFM |
757 | } |
758 | ||
759 | /* | |
0be01004 | 760 | * create the URBs for image transfer |
63eb9546 JFM |
761 | */ |
762 | static int create_urbs(struct gspca_dev *gspca_dev, | |
763 | struct usb_host_endpoint *ep) | |
764 | { | |
765 | struct urb *urb; | |
d43fa32f | 766 | int n, nurbs, i, psize, npkt, bsize; |
63eb9546 JFM |
767 | |
768 | /* calculate the packet size and the number of packets */ | |
63eb9546 | 769 | psize = le16_to_cpu(ep->desc.wMaxPacketSize); |
d43fa32f | 770 | |
6929dc6b | 771 | if (!gspca_dev->cam.bulk) { /* isoc */ |
95d9142c JFM |
772 | |
773 | /* See paragraph 5.9 / table 5-11 of the usb 2.0 spec. */ | |
1f53b0b0 JFM |
774 | if (gspca_dev->pkt_size == 0) |
775 | psize = (psize & 0x07ff) * (1 + ((psize >> 11) & 3)); | |
776 | else | |
777 | psize = gspca_dev->pkt_size; | |
49cb6b04 JFM |
778 | npkt = gspca_dev->cam.npkt; |
779 | if (npkt == 0) | |
780 | npkt = 32; /* default value */ | |
0be01004 JFM |
781 | bsize = psize * npkt; |
782 | PDEBUG(D_STREAM, | |
783 | "isoc %d pkts size %d = bsize:%d", | |
784 | npkt, psize, bsize); | |
51977a8d | 785 | nurbs = DEF_NURBS; |
95d9142c | 786 | } else { /* bulk */ |
0be01004 | 787 | npkt = 0; |
dff369aa | 788 | bsize = gspca_dev->cam.bulk_size; |
95d9142c JFM |
789 | if (bsize == 0) |
790 | bsize = psize; | |
0be01004 | 791 | PDEBUG(D_STREAM, "bulk bsize:%d", bsize); |
dff369aa AO |
792 | if (gspca_dev->cam.bulk_nurbs != 0) |
793 | nurbs = gspca_dev->cam.bulk_nurbs; | |
794 | else | |
795 | nurbs = 1; | |
0be01004 JFM |
796 | } |
797 | ||
d43fa32f | 798 | for (n = 0; n < nurbs; n++) { |
63eb9546 JFM |
799 | urb = usb_alloc_urb(npkt, GFP_KERNEL); |
800 | if (!urb) { | |
133a9fe9 | 801 | pr_err("usb_alloc_urb failed\n"); |
63eb9546 JFM |
802 | return -ENOMEM; |
803 | } | |
db870875 | 804 | gspca_dev->urb[n] = urb; |
997ea58e | 805 | urb->transfer_buffer = usb_alloc_coherent(gspca_dev->dev, |
63eb9546 JFM |
806 | bsize, |
807 | GFP_KERNEL, | |
808 | &urb->transfer_dma); | |
809 | ||
4aa0d037 | 810 | if (urb->transfer_buffer == NULL) { |
133a9fe9 | 811 | pr_err("usb_alloc_coherent failed\n"); |
63eb9546 JFM |
812 | return -ENOMEM; |
813 | } | |
63eb9546 JFM |
814 | urb->dev = gspca_dev->dev; |
815 | urb->context = gspca_dev; | |
63eb9546 | 816 | urb->transfer_buffer_length = bsize; |
0be01004 JFM |
817 | if (npkt != 0) { /* ISOC */ |
818 | urb->pipe = usb_rcvisocpipe(gspca_dev->dev, | |
819 | ep->desc.bEndpointAddress); | |
6c49da7f FZ |
820 | urb->transfer_flags = URB_ISO_ASAP |
821 | | URB_NO_TRANSFER_DMA_MAP; | |
51e23be2 | 822 | urb->interval = 1 << (ep->desc.bInterval - 1); |
0be01004 JFM |
823 | urb->complete = isoc_irq; |
824 | urb->number_of_packets = npkt; | |
825 | for (i = 0; i < npkt; i++) { | |
826 | urb->iso_frame_desc[i].length = psize; | |
827 | urb->iso_frame_desc[i].offset = psize * i; | |
828 | } | |
829 | } else { /* bulk */ | |
830 | urb->pipe = usb_rcvbulkpipe(gspca_dev->dev, | |
a23c1947 | 831 | ep->desc.bEndpointAddress); |
6c49da7f | 832 | urb->transfer_flags = URB_NO_TRANSFER_DMA_MAP; |
0be01004 | 833 | urb->complete = bulk_irq; |
63eb9546 JFM |
834 | } |
835 | } | |
836 | return 0; | |
837 | } | |
838 | ||
839 | /* | |
840 | * start the USB transfer | |
841 | */ | |
842 | static int gspca_init_transfer(struct gspca_dev *gspca_dev) | |
843 | { | |
27b12023 | 844 | struct usb_interface *intf; |
63eb9546 | 845 | struct usb_host_endpoint *ep; |
db870875 | 846 | struct urb *urb; |
27b12023 JFM |
847 | struct ep_tb_s ep_tb[MAX_ALT]; |
848 | int n, ret, xfer, alt, alt_idx; | |
63eb9546 | 849 | |
e2997a72 HG |
850 | if (mutex_lock_interruptible(&gspca_dev->usb_lock)) |
851 | return -ERESTARTSYS; | |
63eb9546 | 852 | |
090264e5 JFM |
853 | if (!gspca_dev->present) { |
854 | ret = -ENODEV; | |
314b3e08 | 855 | goto unlock; |
090264e5 JFM |
856 | } |
857 | ||
f7059eaa JFM |
858 | /* reset the streaming variables */ |
859 | gspca_dev->image = NULL; | |
860 | gspca_dev->image_len = 0; | |
861 | gspca_dev->last_packet_type = DISCARD_PACKET; | |
862 | gspca_dev->sequence = 0; | |
863 | ||
ab6c8cf2 JFM |
864 | gspca_dev->usb_err = 0; |
865 | ||
27b12023 | 866 | /* do the specific subdriver stuff before endpoint selection */ |
47faa6f8 HG |
867 | intf = usb_ifnum_to_if(gspca_dev->dev, gspca_dev->iface); |
868 | gspca_dev->alt = gspca_dev->cam.bulk ? intf->num_altsetting : 0; | |
1f53b0b0 JFM |
869 | if (gspca_dev->sd_desc->isoc_init) { |
870 | ret = gspca_dev->sd_desc->isoc_init(gspca_dev); | |
871 | if (ret < 0) | |
314b3e08 | 872 | goto unlock; |
1f53b0b0 | 873 | } |
27b12023 JFM |
874 | xfer = gspca_dev->cam.bulk ? USB_ENDPOINT_XFER_BULK |
875 | : USB_ENDPOINT_XFER_ISOC; | |
314b3e08 | 876 | |
66957b86 | 877 | /* if bulk or the subdriver forced an altsetting, get the endpoint */ |
27b12023 JFM |
878 | if (gspca_dev->alt != 0) { |
879 | gspca_dev->alt--; /* (previous version compatibility) */ | |
880 | ep = alt_xfer(&intf->altsetting[gspca_dev->alt], xfer); | |
881 | if (ep == NULL) { | |
882 | pr_err("bad altsetting %d\n", gspca_dev->alt); | |
883 | ret = -EIO; | |
884 | goto out; | |
885 | } | |
886 | ep_tb[0].alt = gspca_dev->alt; | |
887 | alt_idx = 1; | |
888 | } else { | |
889 | ||
890 | /* else, compute the minimum bandwidth | |
891 | * and build the endpoint table */ | |
66957b86 | 892 | alt_idx = build_isoc_ep_tb(gspca_dev, intf, ep_tb); |
27b12023 JFM |
893 | if (alt_idx <= 0) { |
894 | pr_err("no transfer endpoint found\n"); | |
895 | ret = -EIO; | |
896 | goto unlock; | |
897 | } | |
1f53b0b0 | 898 | } |
27b12023 JFM |
899 | |
900 | /* set the highest alternate setting and | |
901 | * loop until urb submit succeeds */ | |
902 | gspca_input_destroy_urb(gspca_dev); | |
903 | ||
904 | gspca_dev->alt = ep_tb[--alt_idx].alt; | |
905 | alt = -1; | |
63eb9546 | 906 | for (;;) { |
27b12023 JFM |
907 | if (alt != gspca_dev->alt) { |
908 | alt = gspca_dev->alt; | |
6121ca57 | 909 | if (intf->num_altsetting > 1) { |
27b12023 JFM |
910 | ret = usb_set_interface(gspca_dev->dev, |
911 | gspca_dev->iface, | |
912 | alt); | |
913 | if (ret < 0) { | |
4274d84c JFM |
914 | if (ret == -ENOSPC) |
915 | goto retry; /*fixme: ugly*/ | |
27b12023 JFM |
916 | pr_err("set alt %d err %d\n", alt, ret); |
917 | goto out; | |
918 | } | |
919 | } | |
920 | } | |
47aaca96 | 921 | if (!gspca_dev->cam.no_urb_create) { |
27b12023 JFM |
922 | PDEBUG(D_STREAM, "init transfer alt %d", alt); |
923 | ret = create_urbs(gspca_dev, | |
924 | alt_xfer(&intf->altsetting[alt], xfer)); | |
47aaca96 JFM |
925 | if (ret < 0) { |
926 | destroy_urbs(gspca_dev); | |
927 | goto out; | |
928 | } | |
db870875 | 929 | } |
63eb9546 | 930 | |
8fe2f1d5 | 931 | /* clear the bulk endpoint */ |
6929dc6b | 932 | if (gspca_dev->cam.bulk) |
8fe2f1d5 | 933 | usb_clear_halt(gspca_dev->dev, |
50e06dee | 934 | gspca_dev->urb[0]->pipe); |
8fe2f1d5 | 935 | |
63eb9546 | 936 | /* start the cam */ |
72ab97ce JFM |
937 | ret = gspca_dev->sd_desc->start(gspca_dev); |
938 | if (ret < 0) { | |
939 | destroy_urbs(gspca_dev); | |
940 | goto out; | |
941 | } | |
63eb9546 | 942 | gspca_dev->streaming = 1; |
63eb9546 | 943 | |
dff369aa | 944 | /* some bulk transfers are started by the subdriver */ |
6929dc6b | 945 | if (gspca_dev->cam.bulk && gspca_dev->cam.bulk_nurbs == 0) |
51977a8d JFM |
946 | break; |
947 | ||
63eb9546 | 948 | /* submit the URBs */ |
db870875 JFM |
949 | for (n = 0; n < MAX_NURBS; n++) { |
950 | urb = gspca_dev->urb[n]; | |
951 | if (urb == NULL) | |
952 | break; | |
953 | ret = usb_submit_urb(urb, GFP_KERNEL); | |
1f53b0b0 JFM |
954 | if (ret < 0) |
955 | break; | |
63eb9546 JFM |
956 | } |
957 | if (ret >= 0) | |
27b12023 JFM |
958 | break; /* transfer is started */ |
959 | ||
960 | /* something when wrong | |
961 | * stop the webcam and free the transfer resources */ | |
e4dac289 | 962 | gspca_stream_off(gspca_dev); |
4bdf4a83 | 963 | if (ret != -ENOSPC) { |
133a9fe9 JP |
964 | pr_err("usb_submit_urb alt %d err %d\n", |
965 | gspca_dev->alt, ret); | |
1f53b0b0 | 966 | goto out; |
4bdf4a83 | 967 | } |
1f53b0b0 JFM |
968 | |
969 | /* the bandwidth is not wide enough | |
25985edc | 970 | * negotiate or try a lower alternate setting */ |
4274d84c | 971 | retry: |
4bdf4a83 | 972 | PDEBUG(D_ERR|D_STREAM, |
27b12023 JFM |
973 | "alt %d - bandwidth not wide enough - trying again", |
974 | alt); | |
1f53b0b0 JFM |
975 | msleep(20); /* wait for kill complete */ |
976 | if (gspca_dev->sd_desc->isoc_nego) { | |
977 | ret = gspca_dev->sd_desc->isoc_nego(gspca_dev); | |
978 | if (ret < 0) | |
979 | goto out; | |
980 | } else { | |
27b12023 JFM |
981 | if (alt_idx <= 0) { |
982 | pr_err("no transfer endpoint found\n"); | |
1f53b0b0 JFM |
983 | ret = -EIO; |
984 | goto out; | |
985 | } | |
27b12023 | 986 | alt = ep_tb[--alt_idx].alt; |
1f53b0b0 | 987 | } |
63eb9546 JFM |
988 | } |
989 | out: | |
314b3e08 HG |
990 | gspca_input_create_urb(gspca_dev); |
991 | unlock: | |
63eb9546 JFM |
992 | mutex_unlock(&gspca_dev->usb_lock); |
993 | return ret; | |
994 | } | |
995 | ||
d43fa32f | 996 | static void gspca_set_default_mode(struct gspca_dev *gspca_dev) |
63eb9546 | 997 | { |
6a33091f | 998 | struct gspca_ctrl *ctrl; |
63eb9546 JFM |
999 | int i; |
1000 | ||
1001 | i = gspca_dev->cam.nmodes - 1; /* take the highest mode */ | |
1002 | gspca_dev->curr_mode = i; | |
1003 | gspca_dev->width = gspca_dev->cam.cam_mode[i].width; | |
1004 | gspca_dev->height = gspca_dev->cam.cam_mode[i].height; | |
c2446b3e | 1005 | gspca_dev->pixfmt = gspca_dev->cam.cam_mode[i].pixelformat; |
6a33091f JFM |
1006 | |
1007 | /* set the current control values to their default values | |
1008 | * which may have changed in sd_init() */ | |
1009 | ctrl = gspca_dev->cam.ctrls; | |
1010 | if (ctrl != NULL) { | |
1011 | for (i = 0; | |
1012 | i < gspca_dev->sd_desc->nctrls; | |
1013 | i++, ctrl++) | |
1014 | ctrl->val = ctrl->def; | |
1015 | } | |
63eb9546 JFM |
1016 | } |
1017 | ||
1018 | static int wxh_to_mode(struct gspca_dev *gspca_dev, | |
1019 | int width, int height) | |
1020 | { | |
1021 | int i; | |
1022 | ||
d43fa32f JFM |
1023 | for (i = gspca_dev->cam.nmodes; --i > 0; ) { |
1024 | if (width >= gspca_dev->cam.cam_mode[i].width | |
1025 | && height >= gspca_dev->cam.cam_mode[i].height) | |
63eb9546 JFM |
1026 | break; |
1027 | } | |
63eb9546 JFM |
1028 | return i; |
1029 | } | |
1030 | ||
63eb9546 JFM |
1031 | /* |
1032 | * search a mode with the right pixel format | |
1033 | */ | |
1034 | static int gspca_get_mode(struct gspca_dev *gspca_dev, | |
1035 | int mode, | |
1036 | int pixfmt) | |
1037 | { | |
1038 | int modeU, modeD; | |
1039 | ||
1040 | modeU = modeD = mode; | |
1041 | while ((modeU < gspca_dev->cam.nmodes) || modeD >= 0) { | |
1042 | if (--modeD >= 0) { | |
c2446b3e JFM |
1043 | if (gspca_dev->cam.cam_mode[modeD].pixelformat |
1044 | == pixfmt) | |
63eb9546 JFM |
1045 | return modeD; |
1046 | } | |
1047 | if (++modeU < gspca_dev->cam.nmodes) { | |
c2446b3e JFM |
1048 | if (gspca_dev->cam.cam_mode[modeU].pixelformat |
1049 | == pixfmt) | |
63eb9546 JFM |
1050 | return modeU; |
1051 | } | |
1052 | } | |
1053 | return -EINVAL; | |
1054 | } | |
1055 | ||
af1d9afa BJ |
1056 | #ifdef CONFIG_VIDEO_ADV_DEBUG |
1057 | static int vidioc_g_register(struct file *file, void *priv, | |
1058 | struct v4l2_dbg_register *reg) | |
1059 | { | |
1060 | int ret; | |
1061 | struct gspca_dev *gspca_dev = priv; | |
1062 | ||
1063 | if (!gspca_dev->sd_desc->get_chip_ident) | |
1064 | return -EINVAL; | |
1065 | ||
1066 | if (!gspca_dev->sd_desc->get_register) | |
1067 | return -EINVAL; | |
1068 | ||
1069 | if (mutex_lock_interruptible(&gspca_dev->usb_lock)) | |
1070 | return -ERESTARTSYS; | |
8c4ebae4 | 1071 | gspca_dev->usb_err = 0; |
af1d9afa BJ |
1072 | if (gspca_dev->present) |
1073 | ret = gspca_dev->sd_desc->get_register(gspca_dev, reg); | |
1074 | else | |
1075 | ret = -ENODEV; | |
1076 | mutex_unlock(&gspca_dev->usb_lock); | |
1077 | ||
1078 | return ret; | |
1079 | } | |
1080 | ||
1081 | static int vidioc_s_register(struct file *file, void *priv, | |
1082 | struct v4l2_dbg_register *reg) | |
1083 | { | |
1084 | int ret; | |
1085 | struct gspca_dev *gspca_dev = priv; | |
1086 | ||
1087 | if (!gspca_dev->sd_desc->get_chip_ident) | |
1088 | return -EINVAL; | |
1089 | ||
1090 | if (!gspca_dev->sd_desc->set_register) | |
1091 | return -EINVAL; | |
1092 | ||
1093 | if (mutex_lock_interruptible(&gspca_dev->usb_lock)) | |
1094 | return -ERESTARTSYS; | |
8c4ebae4 | 1095 | gspca_dev->usb_err = 0; |
af1d9afa BJ |
1096 | if (gspca_dev->present) |
1097 | ret = gspca_dev->sd_desc->set_register(gspca_dev, reg); | |
1098 | else | |
1099 | ret = -ENODEV; | |
1100 | mutex_unlock(&gspca_dev->usb_lock); | |
1101 | ||
1102 | return ret; | |
1103 | } | |
1104 | #endif | |
1105 | ||
1106 | static int vidioc_g_chip_ident(struct file *file, void *priv, | |
1107 | struct v4l2_dbg_chip_ident *chip) | |
1108 | { | |
1109 | int ret; | |
1110 | struct gspca_dev *gspca_dev = priv; | |
1111 | ||
1112 | if (!gspca_dev->sd_desc->get_chip_ident) | |
1113 | return -EINVAL; | |
1114 | ||
1115 | if (mutex_lock_interruptible(&gspca_dev->usb_lock)) | |
1116 | return -ERESTARTSYS; | |
8c4ebae4 | 1117 | gspca_dev->usb_err = 0; |
af1d9afa BJ |
1118 | if (gspca_dev->present) |
1119 | ret = gspca_dev->sd_desc->get_chip_ident(gspca_dev, chip); | |
1120 | else | |
1121 | ret = -ENODEV; | |
1122 | mutex_unlock(&gspca_dev->usb_lock); | |
1123 | ||
1124 | return ret; | |
1125 | } | |
1126 | ||
e078770a | 1127 | static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv, |
63eb9546 JFM |
1128 | struct v4l2_fmtdesc *fmtdesc) |
1129 | { | |
1130 | struct gspca_dev *gspca_dev = priv; | |
6a7eba24 | 1131 | int i, j, index; |
63eb9546 JFM |
1132 | __u32 fmt_tb[8]; |
1133 | ||
63eb9546 JFM |
1134 | /* give an index to each format */ |
1135 | index = 0; | |
1136 | j = 0; | |
1137 | for (i = gspca_dev->cam.nmodes; --i >= 0; ) { | |
c2446b3e | 1138 | fmt_tb[index] = gspca_dev->cam.cam_mode[i].pixelformat; |
63eb9546 JFM |
1139 | j = 0; |
1140 | for (;;) { | |
1141 | if (fmt_tb[j] == fmt_tb[index]) | |
1142 | break; | |
1143 | j++; | |
1144 | } | |
1145 | if (j == index) { | |
1146 | if (fmtdesc->index == index) | |
1147 | break; /* new format */ | |
1148 | index++; | |
80297125 | 1149 | if (index >= ARRAY_SIZE(fmt_tb)) |
63eb9546 JFM |
1150 | return -EINVAL; |
1151 | } | |
1152 | } | |
1153 | if (i < 0) | |
1154 | return -EINVAL; /* no more format */ | |
1155 | ||
63eb9546 | 1156 | fmtdesc->pixelformat = fmt_tb[index]; |
b796fb6e JFM |
1157 | if (gspca_dev->cam.cam_mode[i].sizeimage < |
1158 | gspca_dev->cam.cam_mode[i].width * | |
1159 | gspca_dev->cam.cam_mode[i].height) | |
63eb9546 JFM |
1160 | fmtdesc->flags = V4L2_FMT_FLAG_COMPRESSED; |
1161 | fmtdesc->description[0] = fmtdesc->pixelformat & 0xff; | |
1162 | fmtdesc->description[1] = (fmtdesc->pixelformat >> 8) & 0xff; | |
1163 | fmtdesc->description[2] = (fmtdesc->pixelformat >> 16) & 0xff; | |
1164 | fmtdesc->description[3] = fmtdesc->pixelformat >> 24; | |
1165 | fmtdesc->description[4] = '\0'; | |
1166 | return 0; | |
1167 | } | |
1168 | ||
e078770a | 1169 | static int vidioc_g_fmt_vid_cap(struct file *file, void *priv, |
63eb9546 JFM |
1170 | struct v4l2_format *fmt) |
1171 | { | |
1172 | struct gspca_dev *gspca_dev = priv; | |
c2446b3e | 1173 | int mode; |
63eb9546 | 1174 | |
c2446b3e JFM |
1175 | mode = gspca_dev->curr_mode; |
1176 | memcpy(&fmt->fmt.pix, &gspca_dev->cam.cam_mode[mode], | |
1177 | sizeof fmt->fmt.pix); | |
63eb9546 JFM |
1178 | return 0; |
1179 | } | |
1180 | ||
e078770a | 1181 | static int try_fmt_vid_cap(struct gspca_dev *gspca_dev, |
63eb9546 JFM |
1182 | struct v4l2_format *fmt) |
1183 | { | |
24c530b4 | 1184 | int w, h, mode, mode2; |
63eb9546 | 1185 | |
4aa0d037 JFM |
1186 | w = fmt->fmt.pix.width; |
1187 | h = fmt->fmt.pix.height; | |
d43fa32f | 1188 | |
335b3f88 | 1189 | #ifdef GSPCA_DEBUG |
63eb9546 JFM |
1190 | if (gspca_debug & D_CONF) |
1191 | PDEBUG_MODE("try fmt cap", fmt->fmt.pix.pixelformat, w, h); | |
1192 | #endif | |
1193 | /* search the closest mode for width and height */ | |
1194 | mode = wxh_to_mode(gspca_dev, w, h); | |
1195 | ||
1196 | /* OK if right palette */ | |
c2446b3e JFM |
1197 | if (gspca_dev->cam.cam_mode[mode].pixelformat |
1198 | != fmt->fmt.pix.pixelformat) { | |
63eb9546 JFM |
1199 | |
1200 | /* else, search the closest mode with the same pixel format */ | |
1201 | mode2 = gspca_get_mode(gspca_dev, mode, | |
1202 | fmt->fmt.pix.pixelformat); | |
c2446b3e | 1203 | if (mode2 >= 0) |
63eb9546 | 1204 | mode = mode2; |
c2446b3e JFM |
1205 | /* else |
1206 | ; * no chance, return this mode */ | |
63eb9546 | 1207 | } |
c2446b3e JFM |
1208 | memcpy(&fmt->fmt.pix, &gspca_dev->cam.cam_mode[mode], |
1209 | sizeof fmt->fmt.pix); | |
63eb9546 JFM |
1210 | return mode; /* used when s_fmt */ |
1211 | } | |
1212 | ||
e078770a | 1213 | static int vidioc_try_fmt_vid_cap(struct file *file, |
63eb9546 JFM |
1214 | void *priv, |
1215 | struct v4l2_format *fmt) | |
1216 | { | |
4aa0d037 | 1217 | struct gspca_dev *gspca_dev = priv; |
63eb9546 JFM |
1218 | int ret; |
1219 | ||
e078770a | 1220 | ret = try_fmt_vid_cap(gspca_dev, fmt); |
63eb9546 JFM |
1221 | if (ret < 0) |
1222 | return ret; | |
1223 | return 0; | |
1224 | } | |
1225 | ||
e078770a | 1226 | static int vidioc_s_fmt_vid_cap(struct file *file, void *priv, |
63eb9546 JFM |
1227 | struct v4l2_format *fmt) |
1228 | { | |
1229 | struct gspca_dev *gspca_dev = priv; | |
d43fa32f | 1230 | int ret; |
63eb9546 | 1231 | |
e2997a72 HG |
1232 | if (mutex_lock_interruptible(&gspca_dev->queue_lock)) |
1233 | return -ERESTARTSYS; | |
d43fa32f | 1234 | |
e078770a | 1235 | ret = try_fmt_vid_cap(gspca_dev, fmt); |
63eb9546 JFM |
1236 | if (ret < 0) |
1237 | goto out; | |
1238 | ||
d43fa32f JFM |
1239 | if (gspca_dev->nframes != 0 |
1240 | && fmt->fmt.pix.sizeimage > gspca_dev->frsz) { | |
1241 | ret = -EINVAL; | |
1242 | goto out; | |
1243 | } | |
1244 | ||
50a871fe JFM |
1245 | if (ret == gspca_dev->curr_mode) { |
1246 | ret = 0; | |
63eb9546 | 1247 | goto out; /* same mode */ |
50a871fe | 1248 | } |
d43fa32f JFM |
1249 | |
1250 | if (gspca_dev->streaming) { | |
1251 | ret = -EBUSY; | |
1252 | goto out; | |
e2997a72 | 1253 | } |
4aa0d037 JFM |
1254 | gspca_dev->width = fmt->fmt.pix.width; |
1255 | gspca_dev->height = fmt->fmt.pix.height; | |
63eb9546 JFM |
1256 | gspca_dev->pixfmt = fmt->fmt.pix.pixelformat; |
1257 | gspca_dev->curr_mode = ret; | |
d43fa32f | 1258 | |
d43fa32f | 1259 | ret = 0; |
63eb9546 JFM |
1260 | out: |
1261 | mutex_unlock(&gspca_dev->queue_lock); | |
1262 | return ret; | |
1263 | } | |
1264 | ||
11c635a2 HG |
1265 | static int vidioc_enum_framesizes(struct file *file, void *priv, |
1266 | struct v4l2_frmsizeenum *fsize) | |
1267 | { | |
1268 | struct gspca_dev *gspca_dev = priv; | |
1269 | int i; | |
1270 | __u32 index = 0; | |
1271 | ||
1272 | for (i = 0; i < gspca_dev->cam.nmodes; i++) { | |
1273 | if (fsize->pixel_format != | |
1274 | gspca_dev->cam.cam_mode[i].pixelformat) | |
1275 | continue; | |
1276 | ||
1277 | if (fsize->index == index) { | |
1278 | fsize->type = V4L2_FRMSIZE_TYPE_DISCRETE; | |
1279 | fsize->discrete.width = | |
1280 | gspca_dev->cam.cam_mode[i].width; | |
1281 | fsize->discrete.height = | |
1282 | gspca_dev->cam.cam_mode[i].height; | |
1283 | return 0; | |
1284 | } | |
1285 | index++; | |
1286 | } | |
1287 | ||
1288 | return -EINVAL; | |
1289 | } | |
1290 | ||
28ffe77f AO |
1291 | static int vidioc_enum_frameintervals(struct file *filp, void *priv, |
1292 | struct v4l2_frmivalenum *fival) | |
1293 | { | |
1294 | struct gspca_dev *gspca_dev = priv; | |
1295 | int mode = wxh_to_mode(gspca_dev, fival->width, fival->height); | |
1296 | __u32 i; | |
1297 | ||
1298 | if (gspca_dev->cam.mode_framerates == NULL || | |
1299 | gspca_dev->cam.mode_framerates[mode].nrates == 0) | |
1300 | return -EINVAL; | |
1301 | ||
1302 | if (fival->pixel_format != | |
1303 | gspca_dev->cam.cam_mode[mode].pixelformat) | |
1304 | return -EINVAL; | |
1305 | ||
1306 | for (i = 0; i < gspca_dev->cam.mode_framerates[mode].nrates; i++) { | |
1307 | if (fival->index == i) { | |
1308 | fival->type = V4L2_FRMSIZE_TYPE_DISCRETE; | |
1309 | fival->discrete.numerator = 1; | |
1310 | fival->discrete.denominator = | |
1311 | gspca_dev->cam.mode_framerates[mode].rates[i]; | |
1312 | return 0; | |
1313 | } | |
1314 | } | |
1315 | ||
1316 | return -EINVAL; | |
1317 | } | |
1318 | ||
d0182306 | 1319 | static void gspca_release(struct video_device *vfd) |
6b060ffe | 1320 | { |
d0182306 | 1321 | struct gspca_dev *gspca_dev = container_of(vfd, struct gspca_dev, vdev); |
6b060ffe | 1322 | |
38c7c036 LP |
1323 | PDEBUG(D_PROBE, "%s released", |
1324 | video_device_node_name(&gspca_dev->vdev)); | |
6b060ffe FZ |
1325 | |
1326 | kfree(gspca_dev->usb_buf); | |
1327 | kfree(gspca_dev); | |
1328 | } | |
1329 | ||
bec43661 | 1330 | static int dev_open(struct file *file) |
63eb9546 JFM |
1331 | { |
1332 | struct gspca_dev *gspca_dev; | |
63eb9546 | 1333 | |
0d07e240 | 1334 | PDEBUG(D_STREAM, "[%s] open", current->comm); |
a12ca6a6 | 1335 | gspca_dev = (struct gspca_dev *) video_devdata(file); |
7f6eb118 HG |
1336 | if (!gspca_dev->present) |
1337 | return -ENODEV; | |
5c4fa002 JFM |
1338 | |
1339 | /* protect the subdriver against rmmod */ | |
7f6eb118 HG |
1340 | if (!try_module_get(gspca_dev->module)) |
1341 | return -ENODEV; | |
6b060ffe | 1342 | |
63eb9546 | 1343 | file->private_data = gspca_dev; |
335b3f88 | 1344 | #ifdef GSPCA_DEBUG |
63eb9546 | 1345 | /* activate the v4l2 debug */ |
d43fa32f | 1346 | if (gspca_debug & D_V4L2) |
a12ca6a6 | 1347 | gspca_dev->vdev.debug |= V4L2_DEBUG_IOCTL |
9de436cf | 1348 | | V4L2_DEBUG_IOCTL_ARG; |
63eb9546 | 1349 | else |
a12ca6a6 | 1350 | gspca_dev->vdev.debug &= ~(V4L2_DEBUG_IOCTL |
9de436cf | 1351 | | V4L2_DEBUG_IOCTL_ARG); |
63eb9546 | 1352 | #endif |
7f6eb118 | 1353 | return 0; |
63eb9546 JFM |
1354 | } |
1355 | ||
bec43661 | 1356 | static int dev_close(struct file *file) |
63eb9546 JFM |
1357 | { |
1358 | struct gspca_dev *gspca_dev = file->private_data; | |
1359 | ||
0d07e240 | 1360 | PDEBUG(D_STREAM, "[%s] close", current->comm); |
e2997a72 HG |
1361 | if (mutex_lock_interruptible(&gspca_dev->queue_lock)) |
1362 | return -ERESTARTSYS; | |
e2997a72 | 1363 | |
5b77ae77 | 1364 | /* if the file did the capture, free the streaming resources */ |
4aa0d037 | 1365 | if (gspca_dev->capt_file == file) { |
a1e8288b JFM |
1366 | if (gspca_dev->streaming) { |
1367 | mutex_lock(&gspca_dev->usb_lock); | |
8c4ebae4 | 1368 | gspca_dev->usb_err = 0; |
a1e8288b JFM |
1369 | gspca_stream_off(gspca_dev); |
1370 | mutex_unlock(&gspca_dev->usb_lock); | |
1371 | } | |
4aa0d037 | 1372 | frame_free(gspca_dev); |
4aa0d037 | 1373 | } |
d43fa32f | 1374 | file->private_data = NULL; |
5c4fa002 | 1375 | module_put(gspca_dev->module); |
63eb9546 | 1376 | mutex_unlock(&gspca_dev->queue_lock); |
6b060ffe | 1377 | |
d43fa32f | 1378 | PDEBUG(D_STREAM, "close done"); |
6b060ffe | 1379 | |
63eb9546 JFM |
1380 | return 0; |
1381 | } | |
1382 | ||
1383 | static int vidioc_querycap(struct file *file, void *priv, | |
1384 | struct v4l2_capability *cap) | |
1385 | { | |
1386 | struct gspca_dev *gspca_dev = priv; | |
090264e5 | 1387 | int ret; |
63eb9546 | 1388 | |
090264e5 JFM |
1389 | /* protect the access to the usb device */ |
1390 | if (mutex_lock_interruptible(&gspca_dev->usb_lock)) | |
1391 | return -ERESTARTSYS; | |
1392 | if (!gspca_dev->present) { | |
1393 | ret = -ENODEV; | |
1394 | goto out; | |
1395 | } | |
e7d712cc | 1396 | strlcpy((char *) cap->driver, gspca_dev->sd_desc->name, |
d8518590 | 1397 | sizeof cap->driver); |
c6edaf16 | 1398 | if (gspca_dev->dev->product != NULL) { |
e7d712cc | 1399 | strlcpy((char *) cap->card, gspca_dev->dev->product, |
c6edaf16 JFM |
1400 | sizeof cap->card); |
1401 | } else { | |
d8518590 | 1402 | snprintf((char *) cap->card, sizeof cap->card, |
c6edaf16 JFM |
1403 | "USB Camera (%04x:%04x)", |
1404 | le16_to_cpu(gspca_dev->dev->descriptor.idVendor), | |
1405 | le16_to_cpu(gspca_dev->dev->descriptor.idProduct)); | |
1406 | } | |
d8518590 JFM |
1407 | usb_make_path(gspca_dev->dev, (char *) cap->bus_info, |
1408 | sizeof(cap->bus_info)); | |
63eb9546 JFM |
1409 | cap->capabilities = V4L2_CAP_VIDEO_CAPTURE |
1410 | | V4L2_CAP_STREAMING | |
1411 | | V4L2_CAP_READWRITE; | |
090264e5 JFM |
1412 | ret = 0; |
1413 | out: | |
1414 | mutex_unlock(&gspca_dev->usb_lock); | |
1415 | return ret; | |
63eb9546 JFM |
1416 | } |
1417 | ||
6a33091f | 1418 | static int get_ctrl(struct gspca_dev *gspca_dev, |
a0001a28 HG |
1419 | int id) |
1420 | { | |
1421 | const struct ctrl *ctrls; | |
1422 | int i; | |
1423 | ||
1424 | for (i = 0, ctrls = gspca_dev->sd_desc->ctrls; | |
1425 | i < gspca_dev->sd_desc->nctrls; | |
1426 | i++, ctrls++) { | |
1427 | if (gspca_dev->ctrl_dis & (1 << i)) | |
1428 | continue; | |
1429 | if (id == ctrls->qctrl.id) | |
6a33091f | 1430 | return i; |
a0001a28 | 1431 | } |
6a33091f | 1432 | return -1; |
a0001a28 HG |
1433 | } |
1434 | ||
63eb9546 JFM |
1435 | static int vidioc_queryctrl(struct file *file, void *priv, |
1436 | struct v4l2_queryctrl *q_ctrl) | |
1437 | { | |
1438 | struct gspca_dev *gspca_dev = priv; | |
a0001a28 | 1439 | const struct ctrl *ctrls; |
6a33091f JFM |
1440 | struct gspca_ctrl *gspca_ctrl; |
1441 | int i, idx; | |
6a7eba24 JFM |
1442 | u32 id; |
1443 | ||
1444 | id = q_ctrl->id; | |
1445 | if (id & V4L2_CTRL_FLAG_NEXT_CTRL) { | |
1446 | id &= V4L2_CTRL_ID_MASK; | |
1447 | id++; | |
6a33091f | 1448 | idx = -1; |
6a7eba24 | 1449 | for (i = 0; i < gspca_dev->sd_desc->nctrls; i++) { |
a0001a28 | 1450 | if (gspca_dev->ctrl_dis & (1 << i)) |
f50ba1be | 1451 | continue; |
b8bfb5fb | 1452 | if (gspca_dev->sd_desc->ctrls[i].qctrl.id < id) |
f50ba1be | 1453 | continue; |
6a33091f JFM |
1454 | if (idx >= 0 |
1455 | && gspca_dev->sd_desc->ctrls[i].qctrl.id | |
780e3121 | 1456 | > gspca_dev->sd_desc->ctrls[idx].qctrl.id) |
b8bfb5fb | 1457 | continue; |
6a33091f | 1458 | idx = i; |
63eb9546 | 1459 | } |
a0001a28 | 1460 | } else { |
6a33091f | 1461 | idx = get_ctrl(gspca_dev, id); |
63eb9546 | 1462 | } |
6a33091f JFM |
1463 | if (idx < 0) |
1464 | return -EINVAL; | |
1465 | ctrls = &gspca_dev->sd_desc->ctrls[idx]; | |
1466 | memcpy(q_ctrl, &ctrls->qctrl, sizeof *q_ctrl); | |
1467 | if (gspca_dev->cam.ctrls != NULL) { | |
1468 | gspca_ctrl = &gspca_dev->cam.ctrls[idx]; | |
1469 | q_ctrl->default_value = gspca_ctrl->def; | |
1470 | q_ctrl->minimum = gspca_ctrl->min; | |
1471 | q_ctrl->maximum = gspca_ctrl->max; | |
1472 | } | |
1473 | if (gspca_dev->ctrl_inac & (1 << idx)) | |
4af85668 | 1474 | q_ctrl->flags |= V4L2_CTRL_FLAG_INACTIVE; |
f50ba1be | 1475 | return 0; |
63eb9546 JFM |
1476 | } |
1477 | ||
1478 | static int vidioc_s_ctrl(struct file *file, void *priv, | |
1479 | struct v4l2_control *ctrl) | |
1480 | { | |
1481 | struct gspca_dev *gspca_dev = priv; | |
a5ae2062 | 1482 | const struct ctrl *ctrls; |
6a33091f JFM |
1483 | struct gspca_ctrl *gspca_ctrl; |
1484 | int idx, ret; | |
63eb9546 | 1485 | |
6a33091f JFM |
1486 | idx = get_ctrl(gspca_dev, ctrl->id); |
1487 | if (idx < 0) | |
a0001a28 | 1488 | return -EINVAL; |
6a33091f JFM |
1489 | if (gspca_dev->ctrl_inac & (1 << idx)) |
1490 | return -EINVAL; | |
1491 | ctrls = &gspca_dev->sd_desc->ctrls[idx]; | |
1492 | if (gspca_dev->cam.ctrls != NULL) { | |
1493 | gspca_ctrl = &gspca_dev->cam.ctrls[idx]; | |
1494 | if (ctrl->value < gspca_ctrl->min | |
1495 | || ctrl->value > gspca_ctrl->max) | |
1496 | return -ERANGE; | |
1497 | } else { | |
1498 | gspca_ctrl = NULL; | |
1499 | if (ctrl->value < ctrls->qctrl.minimum | |
1500 | || ctrl->value > ctrls->qctrl.maximum) | |
1501 | return -ERANGE; | |
1502 | } | |
a0001a28 HG |
1503 | PDEBUG(D_CONF, "set ctrl [%08x] = %d", ctrl->id, ctrl->value); |
1504 | if (mutex_lock_interruptible(&gspca_dev->usb_lock)) | |
1505 | return -ERESTARTSYS; | |
6a33091f JFM |
1506 | if (!gspca_dev->present) { |
1507 | ret = -ENODEV; | |
1508 | goto out; | |
1509 | } | |
8c4ebae4 | 1510 | gspca_dev->usb_err = 0; |
6a33091f | 1511 | if (ctrls->set != NULL) { |
a0001a28 | 1512 | ret = ctrls->set(gspca_dev, ctrl->value); |
6a33091f JFM |
1513 | goto out; |
1514 | } | |
1515 | if (gspca_ctrl != NULL) { | |
1516 | gspca_ctrl->val = ctrl->value; | |
1517 | if (ctrls->set_control != NULL | |
1518 | && gspca_dev->streaming) | |
1519 | ctrls->set_control(gspca_dev); | |
1520 | } | |
1521 | ret = gspca_dev->usb_err; | |
1522 | out: | |
a0001a28 HG |
1523 | mutex_unlock(&gspca_dev->usb_lock); |
1524 | return ret; | |
63eb9546 JFM |
1525 | } |
1526 | ||
1527 | static int vidioc_g_ctrl(struct file *file, void *priv, | |
1528 | struct v4l2_control *ctrl) | |
1529 | { | |
1530 | struct gspca_dev *gspca_dev = priv; | |
a5ae2062 | 1531 | const struct ctrl *ctrls; |
6a33091f | 1532 | int idx, ret; |
63eb9546 | 1533 | |
6a33091f JFM |
1534 | idx = get_ctrl(gspca_dev, ctrl->id); |
1535 | if (idx < 0) | |
a0001a28 | 1536 | return -EINVAL; |
6a33091f | 1537 | ctrls = &gspca_dev->sd_desc->ctrls[idx]; |
a0001a28 HG |
1538 | |
1539 | if (mutex_lock_interruptible(&gspca_dev->usb_lock)) | |
1540 | return -ERESTARTSYS; | |
6a33091f JFM |
1541 | if (!gspca_dev->present) { |
1542 | ret = -ENODEV; | |
1543 | goto out; | |
1544 | } | |
8c4ebae4 | 1545 | gspca_dev->usb_err = 0; |
6a33091f | 1546 | if (ctrls->get != NULL) { |
a0001a28 | 1547 | ret = ctrls->get(gspca_dev, &ctrl->value); |
6a33091f JFM |
1548 | goto out; |
1549 | } | |
1550 | if (gspca_dev->cam.ctrls != NULL) | |
1551 | ctrl->value = gspca_dev->cam.ctrls[idx].val; | |
1552 | ret = 0; | |
1553 | out: | |
a0001a28 HG |
1554 | mutex_unlock(&gspca_dev->usb_lock); |
1555 | return ret; | |
63eb9546 JFM |
1556 | } |
1557 | ||
1558 | static int vidioc_querymenu(struct file *file, void *priv, | |
1559 | struct v4l2_querymenu *qmenu) | |
1560 | { | |
1561 | struct gspca_dev *gspca_dev = priv; | |
1562 | ||
1563 | if (!gspca_dev->sd_desc->querymenu) | |
1564 | return -EINVAL; | |
1565 | return gspca_dev->sd_desc->querymenu(gspca_dev, qmenu); | |
1566 | } | |
1567 | ||
1568 | static int vidioc_enum_input(struct file *file, void *priv, | |
1569 | struct v4l2_input *input) | |
1570 | { | |
1571 | struct gspca_dev *gspca_dev = priv; | |
1572 | ||
1573 | if (input->index != 0) | |
1574 | return -EINVAL; | |
63eb9546 | 1575 | input->type = V4L2_INPUT_TYPE_CAMERA; |
dfa76fa2 | 1576 | input->status = gspca_dev->cam.input_flags; |
e7d712cc | 1577 | strlcpy(input->name, gspca_dev->sd_desc->name, |
63eb9546 JFM |
1578 | sizeof input->name); |
1579 | return 0; | |
1580 | } | |
1581 | ||
1582 | static int vidioc_g_input(struct file *file, void *priv, unsigned int *i) | |
1583 | { | |
1584 | *i = 0; | |
1585 | return 0; | |
1586 | } | |
1587 | ||
1588 | static int vidioc_s_input(struct file *file, void *priv, unsigned int i) | |
1589 | { | |
1590 | if (i > 0) | |
1591 | return -EINVAL; | |
1592 | return (0); | |
1593 | } | |
1594 | ||
1595 | static int vidioc_reqbufs(struct file *file, void *priv, | |
1596 | struct v4l2_requestbuffers *rb) | |
1597 | { | |
1598 | struct gspca_dev *gspca_dev = priv; | |
832d0a91 | 1599 | int i, ret = 0, streaming; |
63eb9546 | 1600 | |
a2ba6f27 JFM |
1601 | i = rb->memory; /* (avoid compilation warning) */ |
1602 | switch (i) { | |
5b77ae77 | 1603 | case GSPCA_MEMORY_READ: /* (internal call) */ |
d43fa32f | 1604 | case V4L2_MEMORY_MMAP: |
d43fa32f | 1605 | case V4L2_MEMORY_USERPTR: |
6a7eba24 | 1606 | break; |
d43fa32f | 1607 | default: |
63eb9546 | 1608 | return -EINVAL; |
d43fa32f | 1609 | } |
e2997a72 HG |
1610 | if (mutex_lock_interruptible(&gspca_dev->queue_lock)) |
1611 | return -ERESTARTSYS; | |
d43fa32f | 1612 | |
5b77ae77 | 1613 | if (gspca_dev->memory != GSPCA_MEMORY_NO |
ce5610bc | 1614 | && gspca_dev->memory != GSPCA_MEMORY_READ |
5b77ae77 | 1615 | && gspca_dev->memory != rb->memory) { |
4aa0d037 JFM |
1616 | ret = -EBUSY; |
1617 | goto out; | |
1618 | } | |
d43fa32f | 1619 | |
5b77ae77 JFM |
1620 | /* only one file may do the capture */ |
1621 | if (gspca_dev->capt_file != NULL | |
1622 | && gspca_dev->capt_file != file) { | |
1623 | ret = -EBUSY; | |
1624 | goto out; | |
1625 | } | |
1626 | ||
1627 | /* if allocated, the buffers must not be mapped */ | |
1628 | for (i = 0; i < gspca_dev->nframes; i++) { | |
1629 | if (gspca_dev->frame[i].vma_use_count) { | |
ac0d6df6 JFM |
1630 | ret = -EBUSY; |
1631 | goto out; | |
1632 | } | |
5b77ae77 JFM |
1633 | } |
1634 | ||
1635 | /* stop streaming */ | |
832d0a91 JFM |
1636 | streaming = gspca_dev->streaming; |
1637 | if (streaming) { | |
5b77ae77 | 1638 | mutex_lock(&gspca_dev->usb_lock); |
8c4ebae4 | 1639 | gspca_dev->usb_err = 0; |
5b77ae77 JFM |
1640 | gspca_stream_off(gspca_dev); |
1641 | mutex_unlock(&gspca_dev->usb_lock); | |
59929cef JFM |
1642 | |
1643 | /* Don't restart the stream when switching from read | |
1644 | * to mmap mode */ | |
1645 | if (gspca_dev->memory == GSPCA_MEMORY_READ) | |
1646 | streaming = 0; | |
5b77ae77 JFM |
1647 | } |
1648 | ||
1649 | /* free the previous allocated buffers, if any */ | |
d642de2e | 1650 | if (gspca_dev->nframes != 0) |
5b77ae77 | 1651 | frame_free(gspca_dev); |
5b77ae77 JFM |
1652 | if (rb->count == 0) /* unrequest */ |
1653 | goto out; | |
d642de2e | 1654 | ret = frame_alloc(gspca_dev, file, rb->memory, rb->count); |
5b77ae77 JFM |
1655 | if (ret == 0) { |
1656 | rb->count = gspca_dev->nframes; | |
832d0a91 JFM |
1657 | if (streaming) |
1658 | ret = gspca_init_transfer(gspca_dev); | |
4aa0d037 JFM |
1659 | } |
1660 | out: | |
63eb9546 JFM |
1661 | mutex_unlock(&gspca_dev->queue_lock); |
1662 | PDEBUG(D_STREAM, "reqbufs st:%d c:%d", ret, rb->count); | |
1663 | return ret; | |
1664 | } | |
1665 | ||
1666 | static int vidioc_querybuf(struct file *file, void *priv, | |
1667 | struct v4l2_buffer *v4l2_buf) | |
1668 | { | |
1669 | struct gspca_dev *gspca_dev = priv; | |
1670 | struct gspca_frame *frame; | |
1671 | ||
13752bd9 | 1672 | if (v4l2_buf->index < 0 |
63eb9546 JFM |
1673 | || v4l2_buf->index >= gspca_dev->nframes) |
1674 | return -EINVAL; | |
1675 | ||
1676 | frame = &gspca_dev->frame[v4l2_buf->index]; | |
1677 | memcpy(v4l2_buf, &frame->v4l2_buf, sizeof *v4l2_buf); | |
1678 | return 0; | |
1679 | } | |
1680 | ||
1681 | static int vidioc_streamon(struct file *file, void *priv, | |
1682 | enum v4l2_buf_type buf_type) | |
1683 | { | |
1684 | struct gspca_dev *gspca_dev = priv; | |
1685 | int ret; | |
1686 | ||
63eb9546 JFM |
1687 | if (buf_type != V4L2_BUF_TYPE_VIDEO_CAPTURE) |
1688 | return -EINVAL; | |
e2997a72 HG |
1689 | if (mutex_lock_interruptible(&gspca_dev->queue_lock)) |
1690 | return -ERESTARTSYS; | |
090264e5 | 1691 | |
18bf99aa JFM |
1692 | /* check the capture file */ |
1693 | if (gspca_dev->capt_file != file) { | |
1694 | ret = -EBUSY; | |
1695 | goto out; | |
1696 | } | |
1697 | ||
1edabe71 JFM |
1698 | if (gspca_dev->nframes == 0 |
1699 | || !(gspca_dev->frame[0].v4l2_buf.flags & V4L2_BUF_FLAG_QUEUED)) { | |
63eb9546 JFM |
1700 | ret = -EINVAL; |
1701 | goto out; | |
1702 | } | |
1703 | if (!gspca_dev->streaming) { | |
1704 | ret = gspca_init_transfer(gspca_dev); | |
1705 | if (ret < 0) | |
1706 | goto out; | |
1707 | } | |
335b3f88 | 1708 | #ifdef GSPCA_DEBUG |
63eb9546 JFM |
1709 | if (gspca_debug & D_STREAM) { |
1710 | PDEBUG_MODE("stream on OK", | |
1711 | gspca_dev->pixfmt, | |
1712 | gspca_dev->width, | |
1713 | gspca_dev->height); | |
1714 | } | |
1715 | #endif | |
e2997a72 | 1716 | ret = 0; |
63eb9546 JFM |
1717 | out: |
1718 | mutex_unlock(&gspca_dev->queue_lock); | |
1719 | return ret; | |
1720 | } | |
1721 | ||
1722 | static int vidioc_streamoff(struct file *file, void *priv, | |
1723 | enum v4l2_buf_type buf_type) | |
1724 | { | |
1725 | struct gspca_dev *gspca_dev = priv; | |
f7059eaa | 1726 | int ret; |
63eb9546 | 1727 | |
63eb9546 JFM |
1728 | if (buf_type != V4L2_BUF_TYPE_VIDEO_CAPTURE) |
1729 | return -EINVAL; | |
4e770f76 | 1730 | |
4aa0d037 JFM |
1731 | if (mutex_lock_interruptible(&gspca_dev->queue_lock)) |
1732 | return -ERESTARTSYS; | |
5b77ae77 | 1733 | |
4e770f76 HG |
1734 | if (!gspca_dev->streaming) { |
1735 | ret = 0; | |
1736 | goto out; | |
1737 | } | |
1738 | ||
18bf99aa JFM |
1739 | /* check the capture file */ |
1740 | if (gspca_dev->capt_file != file) { | |
1741 | ret = -EBUSY; | |
1742 | goto out; | |
1743 | } | |
1744 | ||
5b77ae77 | 1745 | /* stop streaming */ |
4aa0d037 JFM |
1746 | if (mutex_lock_interruptible(&gspca_dev->usb_lock)) { |
1747 | ret = -ERESTARTSYS; | |
1748 | goto out; | |
63eb9546 | 1749 | } |
8c4ebae4 | 1750 | gspca_dev->usb_err = 0; |
4aa0d037 | 1751 | gspca_stream_off(gspca_dev); |
4aa0d037 | 1752 | mutex_unlock(&gspca_dev->usb_lock); |
0d0ae15d HG |
1753 | /* In case another thread is waiting in dqbuf */ |
1754 | wake_up_interruptible(&gspca_dev->wq); | |
5b77ae77 | 1755 | |
f7059eaa JFM |
1756 | /* empty the transfer queues */ |
1757 | atomic_set(&gspca_dev->fr_q, 0); | |
1758 | atomic_set(&gspca_dev->fr_i, 0); | |
1759 | gspca_dev->fr_o = 0; | |
5b77ae77 | 1760 | ret = 0; |
4aa0d037 JFM |
1761 | out: |
1762 | mutex_unlock(&gspca_dev->queue_lock); | |
1763 | return ret; | |
63eb9546 JFM |
1764 | } |
1765 | ||
1766 | static int vidioc_g_jpegcomp(struct file *file, void *priv, | |
1767 | struct v4l2_jpegcompression *jpegcomp) | |
1768 | { | |
1769 | struct gspca_dev *gspca_dev = priv; | |
1770 | int ret; | |
1771 | ||
1772 | if (!gspca_dev->sd_desc->get_jcomp) | |
1773 | return -EINVAL; | |
e2997a72 HG |
1774 | if (mutex_lock_interruptible(&gspca_dev->usb_lock)) |
1775 | return -ERESTARTSYS; | |
8c4ebae4 | 1776 | gspca_dev->usb_err = 0; |
090264e5 JFM |
1777 | if (gspca_dev->present) |
1778 | ret = gspca_dev->sd_desc->get_jcomp(gspca_dev, jpegcomp); | |
1779 | else | |
1780 | ret = -ENODEV; | |
63eb9546 JFM |
1781 | mutex_unlock(&gspca_dev->usb_lock); |
1782 | return ret; | |
1783 | } | |
1784 | ||
1785 | static int vidioc_s_jpegcomp(struct file *file, void *priv, | |
1786 | struct v4l2_jpegcompression *jpegcomp) | |
1787 | { | |
1788 | struct gspca_dev *gspca_dev = priv; | |
1789 | int ret; | |
1790 | ||
63eb9546 JFM |
1791 | if (!gspca_dev->sd_desc->set_jcomp) |
1792 | return -EINVAL; | |
f86d4a91 JP |
1793 | if (mutex_lock_interruptible(&gspca_dev->usb_lock)) |
1794 | return -ERESTARTSYS; | |
8c4ebae4 | 1795 | gspca_dev->usb_err = 0; |
090264e5 JFM |
1796 | if (gspca_dev->present) |
1797 | ret = gspca_dev->sd_desc->set_jcomp(gspca_dev, jpegcomp); | |
1798 | else | |
1799 | ret = -ENODEV; | |
63eb9546 JFM |
1800 | mutex_unlock(&gspca_dev->usb_lock); |
1801 | return ret; | |
1802 | } | |
1803 | ||
1804 | static int vidioc_g_parm(struct file *filp, void *priv, | |
1805 | struct v4l2_streamparm *parm) | |
1806 | { | |
1807 | struct gspca_dev *gspca_dev = priv; | |
1808 | ||
63eb9546 | 1809 | parm->parm.capture.readbuffers = gspca_dev->nbufread; |
627a5ef7 JP |
1810 | |
1811 | if (gspca_dev->sd_desc->get_streamparm) { | |
1812 | int ret; | |
1813 | ||
1814 | if (mutex_lock_interruptible(&gspca_dev->usb_lock)) | |
1815 | return -ERESTARTSYS; | |
668f44a6 JFM |
1816 | if (gspca_dev->present) { |
1817 | gspca_dev->usb_err = 0; | |
1818 | gspca_dev->sd_desc->get_streamparm(gspca_dev, parm); | |
1819 | ret = gspca_dev->usb_err; | |
1820 | } else { | |
090264e5 | 1821 | ret = -ENODEV; |
668f44a6 | 1822 | } |
627a5ef7 JP |
1823 | mutex_unlock(&gspca_dev->usb_lock); |
1824 | return ret; | |
1825 | } | |
1826 | ||
63eb9546 JFM |
1827 | return 0; |
1828 | } | |
1829 | ||
1830 | static int vidioc_s_parm(struct file *filp, void *priv, | |
1831 | struct v4l2_streamparm *parm) | |
1832 | { | |
1833 | struct gspca_dev *gspca_dev = priv; | |
1834 | int n; | |
1835 | ||
63eb9546 | 1836 | n = parm->parm.capture.readbuffers; |
f7059eaa | 1837 | if (n == 0 || n >= GSPCA_MAX_FRAMES) |
63eb9546 JFM |
1838 | parm->parm.capture.readbuffers = gspca_dev->nbufread; |
1839 | else | |
1840 | gspca_dev->nbufread = n; | |
627a5ef7 JP |
1841 | |
1842 | if (gspca_dev->sd_desc->set_streamparm) { | |
1843 | int ret; | |
1844 | ||
1845 | if (mutex_lock_interruptible(&gspca_dev->usb_lock)) | |
1846 | return -ERESTARTSYS; | |
668f44a6 JFM |
1847 | if (gspca_dev->present) { |
1848 | gspca_dev->usb_err = 0; | |
1849 | gspca_dev->sd_desc->set_streamparm(gspca_dev, parm); | |
1850 | ret = gspca_dev->usb_err; | |
1851 | } else { | |
090264e5 | 1852 | ret = -ENODEV; |
668f44a6 | 1853 | } |
627a5ef7 JP |
1854 | mutex_unlock(&gspca_dev->usb_lock); |
1855 | return ret; | |
1856 | } | |
1857 | ||
63eb9546 JFM |
1858 | return 0; |
1859 | } | |
1860 | ||
63eb9546 JFM |
1861 | static int dev_mmap(struct file *file, struct vm_area_struct *vma) |
1862 | { | |
1863 | struct gspca_dev *gspca_dev = file->private_data; | |
efab8211 | 1864 | struct gspca_frame *frame; |
63eb9546 JFM |
1865 | struct page *page; |
1866 | unsigned long addr, start, size; | |
1867 | int i, ret; | |
63eb9546 JFM |
1868 | |
1869 | start = vma->vm_start; | |
1870 | size = vma->vm_end - vma->vm_start; | |
1871 | PDEBUG(D_STREAM, "mmap start:%08x size:%d", (int) start, (int) size); | |
1872 | ||
e2997a72 HG |
1873 | if (mutex_lock_interruptible(&gspca_dev->queue_lock)) |
1874 | return -ERESTARTSYS; | |
63eb9546 JFM |
1875 | if (!gspca_dev->present) { |
1876 | ret = -ENODEV; | |
4aa0d037 JFM |
1877 | goto out; |
1878 | } | |
1879 | if (gspca_dev->capt_file != file) { | |
1880 | ret = -EINVAL; | |
1881 | goto out; | |
63eb9546 JFM |
1882 | } |
1883 | ||
efab8211 | 1884 | frame = NULL; |
63eb9546 JFM |
1885 | for (i = 0; i < gspca_dev->nframes; ++i) { |
1886 | if (gspca_dev->frame[i].v4l2_buf.memory != V4L2_MEMORY_MMAP) { | |
1887 | PDEBUG(D_STREAM, "mmap bad memory type"); | |
1888 | break; | |
1889 | } | |
1890 | if ((gspca_dev->frame[i].v4l2_buf.m.offset >> PAGE_SHIFT) | |
1891 | == vma->vm_pgoff) { | |
1892 | frame = &gspca_dev->frame[i]; | |
1893 | break; | |
1894 | } | |
1895 | } | |
efab8211 | 1896 | if (frame == NULL) { |
63eb9546 JFM |
1897 | PDEBUG(D_STREAM, "mmap no frame buffer found"); |
1898 | ret = -EINVAL; | |
4aa0d037 | 1899 | goto out; |
63eb9546 | 1900 | } |
38bff697 | 1901 | if (size != frame->v4l2_buf.length) { |
63eb9546 JFM |
1902 | PDEBUG(D_STREAM, "mmap bad size"); |
1903 | ret = -EINVAL; | |
4aa0d037 | 1904 | goto out; |
63eb9546 JFM |
1905 | } |
1906 | ||
1907 | /* | |
1908 | * - VM_IO marks the area as being a mmaped region for I/O to a | |
1909 | * device. It also prevents the region from being core dumped. | |
1910 | */ | |
1911 | vma->vm_flags |= VM_IO; | |
1912 | ||
1913 | addr = (unsigned long) frame->data; | |
1914 | while (size > 0) { | |
1915 | page = vmalloc_to_page((void *) addr); | |
1916 | ret = vm_insert_page(vma, start, page); | |
1917 | if (ret < 0) | |
4aa0d037 | 1918 | goto out; |
63eb9546 JFM |
1919 | start += PAGE_SIZE; |
1920 | addr += PAGE_SIZE; | |
1921 | size -= PAGE_SIZE; | |
1922 | } | |
1923 | ||
d50e257e | 1924 | vma->vm_ops = &gspca_vm_ops; |
63eb9546 JFM |
1925 | vma->vm_private_data = frame; |
1926 | gspca_vm_open(vma); | |
e2997a72 | 1927 | ret = 0; |
4aa0d037 | 1928 | out: |
63eb9546 JFM |
1929 | mutex_unlock(&gspca_dev->queue_lock); |
1930 | return ret; | |
1931 | } | |
1932 | ||
27074efa HG |
1933 | static int frame_ready_nolock(struct gspca_dev *gspca_dev, struct file *file, |
1934 | enum v4l2_memory memory) | |
1935 | { | |
1936 | if (!gspca_dev->present) | |
1937 | return -ENODEV; | |
1938 | if (gspca_dev->capt_file != file || gspca_dev->memory != memory || | |
1939 | !gspca_dev->streaming) | |
1940 | return -EINVAL; | |
1941 | ||
1942 | /* check if a frame is ready */ | |
1943 | return gspca_dev->fr_o != atomic_read(&gspca_dev->fr_i); | |
1944 | } | |
1945 | ||
1946 | static int frame_ready(struct gspca_dev *gspca_dev, struct file *file, | |
1947 | enum v4l2_memory memory) | |
1948 | { | |
1949 | int ret; | |
1950 | ||
1951 | if (mutex_lock_interruptible(&gspca_dev->queue_lock)) | |
1952 | return -ERESTARTSYS; | |
1953 | ret = frame_ready_nolock(gspca_dev, file, memory); | |
1954 | mutex_unlock(&gspca_dev->queue_lock); | |
1955 | return ret; | |
1956 | } | |
1957 | ||
63eb9546 | 1958 | /* |
27074efa | 1959 | * dequeue a video buffer |
63eb9546 | 1960 | * |
27074efa | 1961 | * If nonblock_ing is false, block until a buffer is available. |
63eb9546 | 1962 | */ |
27074efa HG |
1963 | static int vidioc_dqbuf(struct file *file, void *priv, |
1964 | struct v4l2_buffer *v4l2_buf) | |
63eb9546 | 1965 | { |
27074efa HG |
1966 | struct gspca_dev *gspca_dev = priv; |
1967 | struct gspca_frame *frame; | |
1968 | int i, j, ret; | |
63eb9546 | 1969 | |
27074efa HG |
1970 | PDEBUG(D_FRAM, "dqbuf"); |
1971 | ||
1972 | if (mutex_lock_interruptible(&gspca_dev->queue_lock)) | |
1973 | return -ERESTARTSYS; | |
1974 | ||
1975 | for (;;) { | |
1976 | ret = frame_ready_nolock(gspca_dev, file, v4l2_buf->memory); | |
1977 | if (ret < 0) | |
1978 | goto out; | |
1979 | if (ret > 0) | |
1980 | break; | |
1981 | ||
1982 | mutex_unlock(&gspca_dev->queue_lock); | |
1983 | ||
1984 | if (file->f_flags & O_NONBLOCK) | |
181b704f HG |
1985 | return -EAGAIN; |
1986 | ||
1987 | /* wait till a frame is ready */ | |
4aa0d037 | 1988 | ret = wait_event_interruptible_timeout(gspca_dev->wq, |
27074efa | 1989 | frame_ready(gspca_dev, file, v4l2_buf->memory), |
181b704f HG |
1990 | msecs_to_jiffies(3000)); |
1991 | if (ret < 0) | |
1992 | return ret; | |
27074efa | 1993 | if (ret == 0) |
e2997a72 | 1994 | return -EIO; |
27074efa HG |
1995 | |
1996 | if (mutex_lock_interruptible(&gspca_dev->queue_lock)) | |
1997 | return -ERESTARTSYS; | |
63eb9546 | 1998 | } |
181b704f | 1999 | |
27074efa HG |
2000 | i = gspca_dev->fr_o; |
2001 | j = gspca_dev->fr_queue[i]; | |
2002 | frame = &gspca_dev->frame[j]; | |
2003 | ||
f7059eaa | 2004 | gspca_dev->fr_o = (i + 1) % GSPCA_MAX_FRAMES; |
e2997a72 | 2005 | |
739570bb JFM |
2006 | if (gspca_dev->sd_desc->dq_callback) { |
2007 | mutex_lock(&gspca_dev->usb_lock); | |
8c4ebae4 | 2008 | gspca_dev->usb_err = 0; |
090264e5 JFM |
2009 | if (gspca_dev->present) |
2010 | gspca_dev->sd_desc->dq_callback(gspca_dev); | |
739570bb JFM |
2011 | mutex_unlock(&gspca_dev->usb_lock); |
2012 | } | |
5b77ae77 | 2013 | |
4a82bc60 HG |
2014 | frame->v4l2_buf.flags &= ~V4L2_BUF_FLAG_DONE; |
2015 | memcpy(v4l2_buf, &frame->v4l2_buf, sizeof *v4l2_buf); | |
2016 | PDEBUG(D_FRAM, "dqbuf %d", j); | |
2017 | ret = 0; | |
2018 | ||
ac0d6df6 | 2019 | if (gspca_dev->memory == V4L2_MEMORY_USERPTR) { |
c6eb8eaf | 2020 | if (copy_to_user((__u8 __user *) frame->v4l2_buf.m.userptr, |
ac0d6df6 JFM |
2021 | frame->data, |
2022 | frame->v4l2_buf.bytesused)) { | |
2023 | PDEBUG(D_ERR|D_STREAM, | |
2024 | "dqbuf cp to user failed"); | |
2025 | ret = -EFAULT; | |
ac0d6df6 JFM |
2026 | } |
2027 | } | |
4aa0d037 | 2028 | out: |
27074efa | 2029 | mutex_unlock(&gspca_dev->queue_lock); |
63eb9546 JFM |
2030 | return ret; |
2031 | } | |
2032 | ||
2033 | /* | |
2034 | * queue a video buffer | |
2035 | * | |
2036 | * Attempting to queue a buffer that has already been | |
2037 | * queued will return -EINVAL. | |
2038 | */ | |
2039 | static int vidioc_qbuf(struct file *file, void *priv, | |
2040 | struct v4l2_buffer *v4l2_buf) | |
2041 | { | |
2042 | struct gspca_dev *gspca_dev = priv; | |
2043 | struct gspca_frame *frame; | |
2044 | int i, index, ret; | |
2045 | ||
2046 | PDEBUG(D_FRAM, "qbuf %d", v4l2_buf->index); | |
63eb9546 | 2047 | |
5b77ae77 JFM |
2048 | if (mutex_lock_interruptible(&gspca_dev->queue_lock)) |
2049 | return -ERESTARTSYS; | |
2050 | ||
63eb9546 JFM |
2051 | index = v4l2_buf->index; |
2052 | if ((unsigned) index >= gspca_dev->nframes) { | |
d43fa32f | 2053 | PDEBUG(D_FRAM, |
63eb9546 | 2054 | "qbuf idx %d >= %d", index, gspca_dev->nframes); |
5b77ae77 JFM |
2055 | ret = -EINVAL; |
2056 | goto out; | |
63eb9546 | 2057 | } |
5b77ae77 | 2058 | if (v4l2_buf->memory != gspca_dev->memory) { |
d43fa32f | 2059 | PDEBUG(D_FRAM, "qbuf bad memory type"); |
5b77ae77 JFM |
2060 | ret = -EINVAL; |
2061 | goto out; | |
63eb9546 | 2062 | } |
e2997a72 | 2063 | |
5b77ae77 | 2064 | frame = &gspca_dev->frame[index]; |
d43fa32f JFM |
2065 | if (frame->v4l2_buf.flags & BUF_ALL_FLAGS) { |
2066 | PDEBUG(D_FRAM, "qbuf bad state"); | |
63eb9546 JFM |
2067 | ret = -EINVAL; |
2068 | goto out; | |
2069 | } | |
2070 | ||
2071 | frame->v4l2_buf.flags |= V4L2_BUF_FLAG_QUEUED; | |
63eb9546 | 2072 | |
d43fa32f | 2073 | if (frame->v4l2_buf.memory == V4L2_MEMORY_USERPTR) { |
63eb9546 JFM |
2074 | frame->v4l2_buf.m.userptr = v4l2_buf->m.userptr; |
2075 | frame->v4l2_buf.length = v4l2_buf->length; | |
2076 | } | |
2077 | ||
2078 | /* put the buffer in the 'queued' queue */ | |
f7059eaa | 2079 | i = atomic_read(&gspca_dev->fr_q); |
63eb9546 | 2080 | gspca_dev->fr_queue[i] = index; |
f7059eaa | 2081 | atomic_set(&gspca_dev->fr_q, (i + 1) % GSPCA_MAX_FRAMES); |
63eb9546 JFM |
2082 | |
2083 | v4l2_buf->flags |= V4L2_BUF_FLAG_QUEUED; | |
2084 | v4l2_buf->flags &= ~V4L2_BUF_FLAG_DONE; | |
2085 | ret = 0; | |
2086 | out: | |
2087 | mutex_unlock(&gspca_dev->queue_lock); | |
2088 | return ret; | |
2089 | } | |
2090 | ||
d43fa32f JFM |
2091 | /* |
2092 | * allocate the resources for read() | |
2093 | */ | |
2094 | static int read_alloc(struct gspca_dev *gspca_dev, | |
2095 | struct file *file) | |
63eb9546 | 2096 | { |
63eb9546 | 2097 | struct v4l2_buffer v4l2_buf; |
d43fa32f | 2098 | int i, ret; |
63eb9546 | 2099 | |
d43fa32f | 2100 | PDEBUG(D_STREAM, "read alloc"); |
63eb9546 JFM |
2101 | if (gspca_dev->nframes == 0) { |
2102 | struct v4l2_requestbuffers rb; | |
2103 | ||
2104 | memset(&rb, 0, sizeof rb); | |
2105 | rb.count = gspca_dev->nbufread; | |
2106 | rb.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; | |
ac0d6df6 | 2107 | rb.memory = GSPCA_MEMORY_READ; |
63eb9546 JFM |
2108 | ret = vidioc_reqbufs(file, gspca_dev, &rb); |
2109 | if (ret != 0) { | |
d43fa32f | 2110 | PDEBUG(D_STREAM, "read reqbuf err %d", ret); |
63eb9546 JFM |
2111 | return ret; |
2112 | } | |
2113 | memset(&v4l2_buf, 0, sizeof v4l2_buf); | |
2114 | v4l2_buf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; | |
ac0d6df6 | 2115 | v4l2_buf.memory = GSPCA_MEMORY_READ; |
63eb9546 JFM |
2116 | for (i = 0; i < gspca_dev->nbufread; i++) { |
2117 | v4l2_buf.index = i; | |
63eb9546 JFM |
2118 | ret = vidioc_qbuf(file, gspca_dev, &v4l2_buf); |
2119 | if (ret != 0) { | |
2120 | PDEBUG(D_STREAM, "read qbuf err: %d", ret); | |
2121 | return ret; | |
2122 | } | |
2123 | } | |
d43fa32f JFM |
2124 | gspca_dev->memory = GSPCA_MEMORY_READ; |
2125 | } | |
4aa0d037 | 2126 | |
d43fa32f JFM |
2127 | /* start streaming */ |
2128 | ret = vidioc_streamon(file, gspca_dev, V4L2_BUF_TYPE_VIDEO_CAPTURE); | |
2129 | if (ret != 0) | |
2130 | PDEBUG(D_STREAM, "read streamon err %d", ret); | |
2131 | return ret; | |
2132 | } | |
2133 | ||
2134 | static unsigned int dev_poll(struct file *file, poll_table *wait) | |
2135 | { | |
2136 | struct gspca_dev *gspca_dev = file->private_data; | |
f7059eaa | 2137 | int ret; |
d43fa32f JFM |
2138 | |
2139 | PDEBUG(D_FRAM, "poll"); | |
2140 | ||
2141 | poll_wait(file, &gspca_dev->wq, wait); | |
d43fa32f | 2142 | |
5b77ae77 | 2143 | /* if reqbufs is not done, the user would use read() */ |
ee362991 | 2144 | if (gspca_dev->memory == GSPCA_MEMORY_NO) { |
d43fa32f | 2145 | ret = read_alloc(gspca_dev, file); |
5b77ae77 JFM |
2146 | if (ret != 0) |
2147 | return POLLERR; | |
63eb9546 JFM |
2148 | } |
2149 | ||
d43fa32f JFM |
2150 | if (mutex_lock_interruptible(&gspca_dev->queue_lock) != 0) |
2151 | return POLLERR; | |
d43fa32f | 2152 | |
f7059eaa JFM |
2153 | /* check if an image has been received */ |
2154 | if (gspca_dev->fr_o != atomic_read(&gspca_dev->fr_i)) | |
2155 | ret = POLLIN | POLLRDNORM; /* yes */ | |
d43fa32f JFM |
2156 | else |
2157 | ret = 0; | |
d43fa32f | 2158 | mutex_unlock(&gspca_dev->queue_lock); |
090264e5 JFM |
2159 | if (!gspca_dev->present) |
2160 | return POLLHUP; | |
d43fa32f JFM |
2161 | return ret; |
2162 | } | |
2163 | ||
2164 | static ssize_t dev_read(struct file *file, char __user *data, | |
2165 | size_t count, loff_t *ppos) | |
2166 | { | |
2167 | struct gspca_dev *gspca_dev = file->private_data; | |
2168 | struct gspca_frame *frame; | |
2169 | struct v4l2_buffer v4l2_buf; | |
2170 | struct timeval timestamp; | |
82643d0e | 2171 | int n, ret, ret2; |
d43fa32f | 2172 | |
a9e11134 | 2173 | PDEBUG(D_FRAM, "read (%zd)", count); |
d43fa32f JFM |
2174 | if (!gspca_dev->present) |
2175 | return -ENODEV; | |
ee362991 | 2176 | if (gspca_dev->memory == GSPCA_MEMORY_NO) { /* first time ? */ |
d43fa32f JFM |
2177 | ret = read_alloc(gspca_dev, file); |
2178 | if (ret != 0) | |
2179 | return ret; | |
d43fa32f JFM |
2180 | } |
2181 | ||
63eb9546 | 2182 | /* get a frame */ |
2f51d00f | 2183 | timestamp = ktime_to_timeval(ktime_get()); |
63eb9546 | 2184 | timestamp.tv_sec--; |
82643d0e JFM |
2185 | n = 2; |
2186 | for (;;) { | |
63eb9546 JFM |
2187 | memset(&v4l2_buf, 0, sizeof v4l2_buf); |
2188 | v4l2_buf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; | |
ac0d6df6 | 2189 | v4l2_buf.memory = GSPCA_MEMORY_READ; |
63eb9546 JFM |
2190 | ret = vidioc_dqbuf(file, gspca_dev, &v4l2_buf); |
2191 | if (ret != 0) { | |
2192 | PDEBUG(D_STREAM, "read dqbuf err %d", ret); | |
2193 | return ret; | |
2194 | } | |
2195 | ||
2196 | /* if the process slept for more than 1 second, | |
219423c1 | 2197 | * get a newer frame */ |
63eb9546 | 2198 | frame = &gspca_dev->frame[v4l2_buf.index]; |
82643d0e JFM |
2199 | if (--n < 0) |
2200 | break; /* avoid infinite loop */ | |
63eb9546 JFM |
2201 | if (frame->v4l2_buf.timestamp.tv_sec >= timestamp.tv_sec) |
2202 | break; | |
2203 | ret = vidioc_qbuf(file, gspca_dev, &v4l2_buf); | |
2204 | if (ret != 0) { | |
2205 | PDEBUG(D_STREAM, "read qbuf err %d", ret); | |
2206 | return ret; | |
2207 | } | |
2208 | } | |
2209 | ||
2210 | /* copy the frame */ | |
ac0d6df6 JFM |
2211 | if (count > frame->v4l2_buf.bytesused) |
2212 | count = frame->v4l2_buf.bytesused; | |
63eb9546 JFM |
2213 | ret = copy_to_user(data, frame->data, count); |
2214 | if (ret != 0) { | |
2215 | PDEBUG(D_ERR|D_STREAM, | |
a9e11134 | 2216 | "read cp to user lack %d / %zd", ret, count); |
63eb9546 JFM |
2217 | ret = -EFAULT; |
2218 | goto out; | |
2219 | } | |
2220 | ret = count; | |
2221 | out: | |
2222 | /* in each case, requeue the buffer */ | |
2223 | ret2 = vidioc_qbuf(file, gspca_dev, &v4l2_buf); | |
2224 | if (ret2 != 0) | |
2225 | return ret2; | |
2226 | return ret; | |
2227 | } | |
2228 | ||
bec43661 | 2229 | static struct v4l2_file_operations dev_fops = { |
63eb9546 JFM |
2230 | .owner = THIS_MODULE, |
2231 | .open = dev_open, | |
2232 | .release = dev_close, | |
2233 | .read = dev_read, | |
2234 | .mmap = dev_mmap, | |
bec43661 | 2235 | .unlocked_ioctl = video_ioctl2, |
63eb9546 JFM |
2236 | .poll = dev_poll, |
2237 | }; | |
2238 | ||
a399810c | 2239 | static const struct v4l2_ioctl_ops dev_ioctl_ops = { |
63eb9546 JFM |
2240 | .vidioc_querycap = vidioc_querycap, |
2241 | .vidioc_dqbuf = vidioc_dqbuf, | |
2242 | .vidioc_qbuf = vidioc_qbuf, | |
e078770a MCC |
2243 | .vidioc_enum_fmt_vid_cap = vidioc_enum_fmt_vid_cap, |
2244 | .vidioc_try_fmt_vid_cap = vidioc_try_fmt_vid_cap, | |
2245 | .vidioc_g_fmt_vid_cap = vidioc_g_fmt_vid_cap, | |
2246 | .vidioc_s_fmt_vid_cap = vidioc_s_fmt_vid_cap, | |
63eb9546 JFM |
2247 | .vidioc_streamon = vidioc_streamon, |
2248 | .vidioc_queryctrl = vidioc_queryctrl, | |
2249 | .vidioc_g_ctrl = vidioc_g_ctrl, | |
2250 | .vidioc_s_ctrl = vidioc_s_ctrl, | |
2251 | .vidioc_querymenu = vidioc_querymenu, | |
2252 | .vidioc_enum_input = vidioc_enum_input, | |
2253 | .vidioc_g_input = vidioc_g_input, | |
2254 | .vidioc_s_input = vidioc_s_input, | |
2255 | .vidioc_reqbufs = vidioc_reqbufs, | |
2256 | .vidioc_querybuf = vidioc_querybuf, | |
2257 | .vidioc_streamoff = vidioc_streamoff, | |
2258 | .vidioc_g_jpegcomp = vidioc_g_jpegcomp, | |
2259 | .vidioc_s_jpegcomp = vidioc_s_jpegcomp, | |
2260 | .vidioc_g_parm = vidioc_g_parm, | |
2261 | .vidioc_s_parm = vidioc_s_parm, | |
11c635a2 | 2262 | .vidioc_enum_framesizes = vidioc_enum_framesizes, |
28ffe77f | 2263 | .vidioc_enum_frameintervals = vidioc_enum_frameintervals, |
af1d9afa BJ |
2264 | #ifdef CONFIG_VIDEO_ADV_DEBUG |
2265 | .vidioc_g_register = vidioc_g_register, | |
2266 | .vidioc_s_register = vidioc_s_register, | |
2267 | #endif | |
2268 | .vidioc_g_chip_ident = vidioc_g_chip_ident, | |
63eb9546 JFM |
2269 | }; |
2270 | ||
59929cef | 2271 | static const struct video_device gspca_template = { |
a399810c | 2272 | .name = "gspca main driver", |
a399810c HV |
2273 | .fops = &dev_fops, |
2274 | .ioctl_ops = &dev_ioctl_ops, | |
d0182306 | 2275 | .release = gspca_release, |
a399810c HV |
2276 | }; |
2277 | ||
6a33091f JFM |
2278 | /* initialize the controls */ |
2279 | static void ctrls_init(struct gspca_dev *gspca_dev) | |
2280 | { | |
2281 | struct gspca_ctrl *ctrl; | |
2282 | int i; | |
2283 | ||
2284 | for (i = 0, ctrl = gspca_dev->cam.ctrls; | |
2285 | i < gspca_dev->sd_desc->nctrls; | |
2286 | i++, ctrl++) { | |
2287 | ctrl->def = gspca_dev->sd_desc->ctrls[i].qctrl.default_value; | |
2288 | ctrl->val = ctrl->def; | |
2289 | ctrl->min = gspca_dev->sd_desc->ctrls[i].qctrl.minimum; | |
2290 | ctrl->max = gspca_dev->sd_desc->ctrls[i].qctrl.maximum; | |
2291 | } | |
2292 | } | |
2293 | ||
63eb9546 JFM |
2294 | /* |
2295 | * probe and create a new gspca device | |
2296 | * | |
2297 | * This function must be called by the sub-driver when it is | |
2298 | * called for probing a new device. | |
2299 | */ | |
4462864d | 2300 | int gspca_dev_probe2(struct usb_interface *intf, |
63eb9546 JFM |
2301 | const struct usb_device_id *id, |
2302 | const struct sd_desc *sd_desc, | |
d43fa32f JFM |
2303 | int dev_size, |
2304 | struct module *module) | |
63eb9546 | 2305 | { |
63eb9546 JFM |
2306 | struct gspca_dev *gspca_dev; |
2307 | struct usb_device *dev = interface_to_usbdev(intf); | |
2308 | int ret; | |
63eb9546 | 2309 | |
ee7dd4e0 JFM |
2310 | pr_info("%s-" GSPCA_VERSION " probing %04x:%04x\n", |
2311 | sd_desc->name, id->idVendor, id->idProduct); | |
63eb9546 | 2312 | |
63eb9546 JFM |
2313 | /* create the device */ |
2314 | if (dev_size < sizeof *gspca_dev) | |
2315 | dev_size = sizeof *gspca_dev; | |
2316 | gspca_dev = kzalloc(dev_size, GFP_KERNEL); | |
e293e599 | 2317 | if (!gspca_dev) { |
133a9fe9 | 2318 | pr_err("couldn't kzalloc gspca struct\n"); |
e293e599 | 2319 | return -ENOMEM; |
63eb9546 | 2320 | } |
8295d99e JFM |
2321 | gspca_dev->usb_buf = kmalloc(USB_BUF_SZ, GFP_KERNEL); |
2322 | if (!gspca_dev->usb_buf) { | |
133a9fe9 | 2323 | pr_err("out of memory\n"); |
e293e599 | 2324 | ret = -ENOMEM; |
8295d99e JFM |
2325 | goto out; |
2326 | } | |
63eb9546 | 2327 | gspca_dev->dev = dev; |
4462864d | 2328 | gspca_dev->iface = intf->cur_altsetting->desc.bInterfaceNumber; |
35680baa JFM |
2329 | |
2330 | /* check if any audio device */ | |
5dae603d | 2331 | if (dev->actconfig->desc.bNumInterfaces != 1) { |
35680baa JFM |
2332 | int i; |
2333 | struct usb_interface *intf2; | |
2334 | ||
5dae603d HG |
2335 | for (i = 0; i < dev->actconfig->desc.bNumInterfaces; i++) { |
2336 | intf2 = dev->actconfig->interface[i]; | |
35680baa JFM |
2337 | if (intf2 != NULL |
2338 | && intf2->altsetting != NULL | |
2339 | && intf2->altsetting->desc.bInterfaceClass == | |
2340 | USB_CLASS_AUDIO) { | |
2341 | gspca_dev->audio = 1; | |
2342 | break; | |
2343 | } | |
2344 | } | |
2345 | } | |
2346 | ||
63eb9546 | 2347 | gspca_dev->sd_desc = sd_desc; |
63eb9546 | 2348 | gspca_dev->nbufread = 2; |
ff374747 | 2349 | gspca_dev->empty_packet = -1; /* don't check the empty packets */ |
63eb9546 | 2350 | |
012d6b02 | 2351 | /* configure the subdriver and initialize the USB device */ |
ba38ee8e | 2352 | ret = sd_desc->config(gspca_dev, id); |
012d6b02 JFM |
2353 | if (ret < 0) |
2354 | goto out; | |
6a33091f JFM |
2355 | if (gspca_dev->cam.ctrls != NULL) |
2356 | ctrls_init(gspca_dev); | |
ba38ee8e | 2357 | ret = sd_desc->init(gspca_dev); |
63eb9546 JFM |
2358 | if (ret < 0) |
2359 | goto out; | |
2360 | gspca_set_default_mode(gspca_dev); | |
2361 | ||
10ee2402 HG |
2362 | ret = gspca_input_connect(gspca_dev); |
2363 | if (ret) | |
2364 | goto out; | |
2365 | ||
63eb9546 | 2366 | mutex_init(&gspca_dev->usb_lock); |
63eb9546 JFM |
2367 | mutex_init(&gspca_dev->queue_lock); |
2368 | init_waitqueue_head(&gspca_dev->wq); | |
2369 | ||
2370 | /* init video stuff */ | |
ba38ee8e | 2371 | memcpy(&gspca_dev->vdev, &gspca_template, sizeof gspca_template); |
24441631 | 2372 | gspca_dev->vdev.parent = &intf->dev; |
5c4fa002 | 2373 | gspca_dev->module = module; |
ee56a4d3 | 2374 | gspca_dev->present = 1; |
a12ca6a6 | 2375 | ret = video_register_device(&gspca_dev->vdev, |
63eb9546 | 2376 | VFL_TYPE_GRABBER, |
8d584a53 | 2377 | -1); |
63eb9546 | 2378 | if (ret < 0) { |
133a9fe9 | 2379 | pr_err("video_register_device err %d\n", ret); |
63eb9546 JFM |
2380 | goto out; |
2381 | } | |
2382 | ||
63eb9546 | 2383 | usb_set_intfdata(intf, gspca_dev); |
38c7c036 | 2384 | PDEBUG(D_PROBE, "%s created", video_device_node_name(&gspca_dev->vdev)); |
0274d42e | 2385 | |
10ee2402 | 2386 | gspca_input_create_urb(gspca_dev); |
0274d42e | 2387 | |
63eb9546 JFM |
2388 | return 0; |
2389 | out: | |
f7628015 | 2390 | #if defined(CONFIG_INPUT) || defined(CONFIG_INPUT_MODULE) |
10ee2402 HG |
2391 | if (gspca_dev->input_dev) |
2392 | input_unregister_device(gspca_dev->input_dev); | |
e7637521 | 2393 | #endif |
e07a1d8a JFM |
2394 | kfree(gspca_dev->usb_buf); |
2395 | kfree(gspca_dev); | |
63eb9546 JFM |
2396 | return ret; |
2397 | } | |
4462864d JFM |
2398 | EXPORT_SYMBOL(gspca_dev_probe2); |
2399 | ||
2400 | /* same function as the previous one, but check the interface */ | |
2401 | int gspca_dev_probe(struct usb_interface *intf, | |
2402 | const struct usb_device_id *id, | |
2403 | const struct sd_desc *sd_desc, | |
2404 | int dev_size, | |
2405 | struct module *module) | |
2406 | { | |
2407 | struct usb_device *dev = interface_to_usbdev(intf); | |
2408 | ||
2409 | /* we don't handle multi-config cameras */ | |
2410 | if (dev->descriptor.bNumConfigurations != 1) { | |
133a9fe9 JP |
2411 | pr_err("%04x:%04x too many config\n", |
2412 | id->idVendor, id->idProduct); | |
4462864d JFM |
2413 | return -ENODEV; |
2414 | } | |
2415 | ||
2416 | /* the USB video interface must be the first one */ | |
5dae603d | 2417 | if (dev->actconfig->desc.bNumInterfaces != 1 |
c4dc692c | 2418 | && intf->cur_altsetting->desc.bInterfaceNumber != 0) |
4462864d | 2419 | return -ENODEV; |
4462864d JFM |
2420 | |
2421 | return gspca_dev_probe2(intf, id, sd_desc, dev_size, module); | |
2422 | } | |
63eb9546 JFM |
2423 | EXPORT_SYMBOL(gspca_dev_probe); |
2424 | ||
2425 | /* | |
2426 | * USB disconnection | |
2427 | * | |
2428 | * This function must be called by the sub-driver | |
2429 | * when the device disconnects, after the specific resources are freed. | |
2430 | */ | |
2431 | void gspca_disconnect(struct usb_interface *intf) | |
2432 | { | |
4aa0d037 | 2433 | struct gspca_dev *gspca_dev = usb_get_intfdata(intf); |
f7628015 | 2434 | #if defined(CONFIG_INPUT) || defined(CONFIG_INPUT_MODULE) |
0274d42e | 2435 | struct input_dev *input_dev; |
e070bf9e | 2436 | #endif |
63eb9546 | 2437 | |
38c7c036 LP |
2438 | PDEBUG(D_PROBE, "%s disconnect", |
2439 | video_device_node_name(&gspca_dev->vdev)); | |
ad28127d | 2440 | mutex_lock(&gspca_dev->usb_lock); |
4e770f76 | 2441 | |
6e4ae872 | 2442 | gspca_dev->present = 0; |
4e770f76 | 2443 | wake_up_interruptible(&gspca_dev->wq); |
6e4ae872 | 2444 | |
4e770f76 | 2445 | destroy_urbs(gspca_dev); |
090264e5 | 2446 | |
f7628015 | 2447 | #if defined(CONFIG_INPUT) || defined(CONFIG_INPUT_MODULE) |
0274d42e MN |
2448 | gspca_input_destroy_urb(gspca_dev); |
2449 | input_dev = gspca_dev->input_dev; | |
2450 | if (input_dev) { | |
2451 | gspca_dev->input_dev = NULL; | |
2452 | input_unregister_device(input_dev); | |
2453 | } | |
e070bf9e | 2454 | #endif |
0274d42e | 2455 | |
090264e5 | 2456 | /* the device is freed at exit of this function */ |
ad28127d | 2457 | gspca_dev->dev = NULL; |
090264e5 JFM |
2458 | mutex_unlock(&gspca_dev->usb_lock); |
2459 | ||
6b060ffe FZ |
2460 | usb_set_intfdata(intf, NULL); |
2461 | ||
a12ca6a6 | 2462 | /* release the device */ |
25985edc | 2463 | /* (this will call gspca_release() immediately or on last close) */ |
a12ca6a6 | 2464 | video_unregister_device(&gspca_dev->vdev); |
3145b8c1 | 2465 | |
0d07e240 | 2466 | /* PDEBUG(D_PROBE, "disconnect complete"); */ |
63eb9546 JFM |
2467 | } |
2468 | EXPORT_SYMBOL(gspca_disconnect); | |
2469 | ||
6a709749 JFM |
2470 | #ifdef CONFIG_PM |
2471 | int gspca_suspend(struct usb_interface *intf, pm_message_t message) | |
2472 | { | |
2473 | struct gspca_dev *gspca_dev = usb_get_intfdata(intf); | |
2474 | ||
2475 | if (!gspca_dev->streaming) | |
2476 | return 0; | |
2477 | gspca_dev->frozen = 1; /* avoid urb error messages */ | |
012d6b02 JFM |
2478 | if (gspca_dev->sd_desc->stopN) |
2479 | gspca_dev->sd_desc->stopN(gspca_dev); | |
6a709749 | 2480 | destroy_urbs(gspca_dev); |
0274d42e | 2481 | gspca_input_destroy_urb(gspca_dev); |
6a709749 | 2482 | gspca_set_alt0(gspca_dev); |
012d6b02 JFM |
2483 | if (gspca_dev->sd_desc->stop0) |
2484 | gspca_dev->sd_desc->stop0(gspca_dev); | |
6a709749 JFM |
2485 | return 0; |
2486 | } | |
2487 | EXPORT_SYMBOL(gspca_suspend); | |
2488 | ||
2489 | int gspca_resume(struct usb_interface *intf) | |
2490 | { | |
2491 | struct gspca_dev *gspca_dev = usb_get_intfdata(intf); | |
2492 | ||
2493 | gspca_dev->frozen = 0; | |
012d6b02 | 2494 | gspca_dev->sd_desc->init(gspca_dev); |
0274d42e | 2495 | gspca_input_create_urb(gspca_dev); |
012d6b02 JFM |
2496 | if (gspca_dev->streaming) |
2497 | return gspca_init_transfer(gspca_dev); | |
1e89e2da | 2498 | return 0; |
6a709749 JFM |
2499 | } |
2500 | EXPORT_SYMBOL(gspca_resume); | |
2501 | #endif | |
dcef3237 HG |
2502 | /* -- cam driver utility functions -- */ |
2503 | ||
2504 | /* auto gain and exposure algorithm based on the knee algorithm described here: | |
2505 | http://ytse.tricolour.net/docs/LowLightOptimization.html | |
2506 | ||
2507 | Returns 0 if no changes were made, 1 if the gain and or exposure settings | |
2508 | where changed. */ | |
2509 | int gspca_auto_gain_n_exposure(struct gspca_dev *gspca_dev, int avg_lum, | |
2510 | int desired_avg_lum, int deadzone, int gain_knee, int exposure_knee) | |
2511 | { | |
2512 | int i, steps, gain, orig_gain, exposure, orig_exposure, autogain; | |
2513 | const struct ctrl *gain_ctrl = NULL; | |
2514 | const struct ctrl *exposure_ctrl = NULL; | |
2515 | const struct ctrl *autogain_ctrl = NULL; | |
2516 | int retval = 0; | |
2517 | ||
2518 | for (i = 0; i < gspca_dev->sd_desc->nctrls; i++) { | |
26984b09 HG |
2519 | if (gspca_dev->ctrl_dis & (1 << i)) |
2520 | continue; | |
dcef3237 HG |
2521 | if (gspca_dev->sd_desc->ctrls[i].qctrl.id == V4L2_CID_GAIN) |
2522 | gain_ctrl = &gspca_dev->sd_desc->ctrls[i]; | |
2523 | if (gspca_dev->sd_desc->ctrls[i].qctrl.id == V4L2_CID_EXPOSURE) | |
2524 | exposure_ctrl = &gspca_dev->sd_desc->ctrls[i]; | |
2525 | if (gspca_dev->sd_desc->ctrls[i].qctrl.id == V4L2_CID_AUTOGAIN) | |
2526 | autogain_ctrl = &gspca_dev->sd_desc->ctrls[i]; | |
2527 | } | |
2528 | if (!gain_ctrl || !exposure_ctrl || !autogain_ctrl) { | |
2529 | PDEBUG(D_ERR, "Error: gspca_auto_gain_n_exposure called " | |
2530 | "on cam without (auto)gain/exposure"); | |
2531 | return 0; | |
2532 | } | |
2533 | ||
2534 | if (gain_ctrl->get(gspca_dev, &gain) || | |
2535 | exposure_ctrl->get(gspca_dev, &exposure) || | |
2536 | autogain_ctrl->get(gspca_dev, &autogain) || !autogain) | |
2537 | return 0; | |
2538 | ||
2539 | orig_gain = gain; | |
2540 | orig_exposure = exposure; | |
2541 | ||
2542 | /* If we are of a multiple of deadzone, do multiple steps to reach the | |
2543 | desired lumination fast (with the risc of a slight overshoot) */ | |
2544 | steps = abs(desired_avg_lum - avg_lum) / deadzone; | |
2545 | ||
1c44d81d | 2546 | PDEBUG(D_FRAM, "autogain: lum: %d, desired: %d, steps: %d", |
dcef3237 HG |
2547 | avg_lum, desired_avg_lum, steps); |
2548 | ||
2549 | for (i = 0; i < steps; i++) { | |
2550 | if (avg_lum > desired_avg_lum) { | |
2551 | if (gain > gain_knee) | |
2552 | gain--; | |
2553 | else if (exposure > exposure_knee) | |
2554 | exposure--; | |
2555 | else if (gain > gain_ctrl->qctrl.default_value) | |
2556 | gain--; | |
2557 | else if (exposure > exposure_ctrl->qctrl.minimum) | |
2558 | exposure--; | |
2559 | else if (gain > gain_ctrl->qctrl.minimum) | |
2560 | gain--; | |
2561 | else | |
2562 | break; | |
2563 | } else { | |
2564 | if (gain < gain_ctrl->qctrl.default_value) | |
2565 | gain++; | |
2566 | else if (exposure < exposure_knee) | |
2567 | exposure++; | |
2568 | else if (gain < gain_knee) | |
2569 | gain++; | |
2570 | else if (exposure < exposure_ctrl->qctrl.maximum) | |
2571 | exposure++; | |
2572 | else if (gain < gain_ctrl->qctrl.maximum) | |
2573 | gain++; | |
2574 | else | |
2575 | break; | |
2576 | } | |
2577 | } | |
2578 | ||
2579 | if (gain != orig_gain) { | |
2580 | gain_ctrl->set(gspca_dev, gain); | |
2581 | retval = 1; | |
2582 | } | |
2583 | if (exposure != orig_exposure) { | |
2584 | exposure_ctrl->set(gspca_dev, exposure); | |
2585 | retval = 1; | |
2586 | } | |
2587 | ||
2588 | return retval; | |
2589 | } | |
2590 | EXPORT_SYMBOL(gspca_auto_gain_n_exposure); | |
2591 | ||
63eb9546 JFM |
2592 | /* -- module insert / remove -- */ |
2593 | static int __init gspca_init(void) | |
2594 | { | |
f22123fa | 2595 | pr_info("v" GSPCA_VERSION " registered\n"); |
63eb9546 JFM |
2596 | return 0; |
2597 | } | |
2598 | static void __exit gspca_exit(void) | |
2599 | { | |
63eb9546 JFM |
2600 | } |
2601 | ||
2602 | module_init(gspca_init); | |
2603 | module_exit(gspca_exit); | |
2604 | ||
335b3f88 | 2605 | #ifdef GSPCA_DEBUG |
63eb9546 JFM |
2606 | module_param_named(debug, gspca_debug, int, 0644); |
2607 | MODULE_PARM_DESC(debug, | |
2608 | "Debug (bit) 0x01:error 0x02:probe 0x04:config" | |
f8e5677f | 2609 | " 0x08:stream 0x10:frame 0x20:packet" |
d43fa32f | 2610 | " 0x0100: v4l2"); |
6a7eba24 | 2611 | #endif |