Commit | Line | Data |
---|---|---|
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 | ||
636 | i = gspca_dev->curr_mode; | |
637 | bandwidth = gspca_dev->cam.cam_mode[i].sizeimage; | |
638 | ||
639 | /* if the image is compressed, estimate the mean image size */ | |
640 | if (bandwidth < gspca_dev->cam.cam_mode[i].width * | |
641 | gspca_dev->cam.cam_mode[i].height) | |
642 | bandwidth /= 3; | |
643 | ||
644 | /* estimate the frame rate */ | |
645 | if (gspca_dev->sd_desc->get_streamparm) { | |
646 | struct v4l2_streamparm parm; | |
647 | ||
648 | parm.parm.capture.timeperframe.denominator = 15; | |
649 | gspca_dev->sd_desc->get_streamparm(gspca_dev, &parm); | |
650 | bandwidth *= parm.parm.capture.timeperframe.denominator; | |
651 | } else { | |
652 | bandwidth *= 15; /* 15 fps */ | |
653 | } | |
654 | ||
655 | PDEBUG(D_STREAM, "min bandwidth: %d", bandwidth); | |
656 | return bandwidth; | |
657 | } | |
658 | ||
659 | /* endpoint table */ | |
660 | #define MAX_ALT 16 | |
661 | struct ep_tb_s { | |
662 | u32 alt; | |
663 | u32 bandwidth; | |
664 | }; | |
665 | ||
63eb9546 | 666 | /* |
27b12023 JFM |
667 | * build the table of the endpoints |
668 | * and compute the minimum bandwidth for the image transfer | |
63eb9546 | 669 | */ |
27b12023 JFM |
670 | static int build_ep_tb(struct gspca_dev *gspca_dev, |
671 | struct usb_interface *intf, | |
672 | int xfer, | |
673 | struct ep_tb_s *ep_tb) | |
63eb9546 | 674 | { |
63eb9546 | 675 | struct usb_host_endpoint *ep; |
27b12023 JFM |
676 | int i, j, nbalt, psize, found; |
677 | u32 bandwidth, last_bw; | |
63eb9546 | 678 | |
27b12023 JFM |
679 | nbalt = intf->num_altsetting; |
680 | if (nbalt > MAX_ALT) | |
681 | nbalt = MAX_ALT; /* fixme: should warn */ | |
682 | ||
683 | /* build the endpoint table */ | |
684 | i = 0; | |
685 | last_bw = 0; | |
686 | for (;;) { | |
687 | ep_tb->bandwidth = 2000 * 2000 * 120; | |
688 | found = 0; | |
689 | for (j = 0; j < nbalt; j++) { | |
690 | ep = alt_xfer(&intf->altsetting[j], xfer); | |
691 | if (ep == NULL) | |
692 | continue; | |
693 | psize = le16_to_cpu(ep->desc.wMaxPacketSize); | |
694 | if (!gspca_dev->cam.bulk) /* isoc */ | |
695 | psize = (psize & 0x07ff) * | |
696 | (1 + ((psize >> 11) & 3)); | |
697 | bandwidth = psize * ep->desc.bInterval * 1000; | |
698 | if (gspca_dev->dev->speed == USB_SPEED_HIGH | |
699 | || gspca_dev->dev->speed == USB_SPEED_SUPER) | |
700 | bandwidth *= 8; | |
701 | if (bandwidth <= last_bw) | |
702 | continue; | |
703 | if (bandwidth < ep_tb->bandwidth) { | |
704 | ep_tb->bandwidth = bandwidth; | |
705 | ep_tb->alt = j; | |
706 | found = 1; | |
707 | } | |
95d9142c | 708 | } |
27b12023 JFM |
709 | if (!found) |
710 | break; | |
711 | PDEBUG(D_STREAM, "alt %d bandwidth %d", | |
712 | ep_tb->alt, ep_tb->bandwidth); | |
713 | last_bw = ep_tb->bandwidth; | |
714 | i++; | |
715 | ep_tb++; | |
716 | } | |
717 | ||
718 | /* get the requested bandwidth and start at the highest atlsetting */ | |
719 | bandwidth = which_bandwidth(gspca_dev); | |
720 | ep_tb--; | |
721 | while (i > 1) { | |
722 | ep_tb--; | |
723 | if (ep_tb->bandwidth < bandwidth) | |
724 | break; | |
725 | i--; | |
63eb9546 | 726 | } |
27b12023 | 727 | return i; |
63eb9546 JFM |
728 | } |
729 | ||
730 | /* | |
0be01004 | 731 | * create the URBs for image transfer |
63eb9546 JFM |
732 | */ |
733 | static int create_urbs(struct gspca_dev *gspca_dev, | |
734 | struct usb_host_endpoint *ep) | |
735 | { | |
736 | struct urb *urb; | |
d43fa32f | 737 | int n, nurbs, i, psize, npkt, bsize; |
63eb9546 JFM |
738 | |
739 | /* calculate the packet size and the number of packets */ | |
63eb9546 | 740 | psize = le16_to_cpu(ep->desc.wMaxPacketSize); |
d43fa32f | 741 | |
6929dc6b | 742 | if (!gspca_dev->cam.bulk) { /* isoc */ |
95d9142c JFM |
743 | |
744 | /* See paragraph 5.9 / table 5-11 of the usb 2.0 spec. */ | |
1f53b0b0 JFM |
745 | if (gspca_dev->pkt_size == 0) |
746 | psize = (psize & 0x07ff) * (1 + ((psize >> 11) & 3)); | |
747 | else | |
748 | psize = gspca_dev->pkt_size; | |
49cb6b04 JFM |
749 | npkt = gspca_dev->cam.npkt; |
750 | if (npkt == 0) | |
751 | npkt = 32; /* default value */ | |
0be01004 JFM |
752 | bsize = psize * npkt; |
753 | PDEBUG(D_STREAM, | |
754 | "isoc %d pkts size %d = bsize:%d", | |
755 | npkt, psize, bsize); | |
51977a8d | 756 | nurbs = DEF_NURBS; |
95d9142c | 757 | } else { /* bulk */ |
0be01004 | 758 | npkt = 0; |
dff369aa | 759 | bsize = gspca_dev->cam.bulk_size; |
95d9142c JFM |
760 | if (bsize == 0) |
761 | bsize = psize; | |
0be01004 | 762 | PDEBUG(D_STREAM, "bulk bsize:%d", bsize); |
dff369aa AO |
763 | if (gspca_dev->cam.bulk_nurbs != 0) |
764 | nurbs = gspca_dev->cam.bulk_nurbs; | |
765 | else | |
766 | nurbs = 1; | |
0be01004 JFM |
767 | } |
768 | ||
d43fa32f | 769 | for (n = 0; n < nurbs; n++) { |
63eb9546 JFM |
770 | urb = usb_alloc_urb(npkt, GFP_KERNEL); |
771 | if (!urb) { | |
133a9fe9 | 772 | pr_err("usb_alloc_urb failed\n"); |
63eb9546 JFM |
773 | return -ENOMEM; |
774 | } | |
db870875 | 775 | gspca_dev->urb[n] = urb; |
997ea58e | 776 | urb->transfer_buffer = usb_alloc_coherent(gspca_dev->dev, |
63eb9546 JFM |
777 | bsize, |
778 | GFP_KERNEL, | |
779 | &urb->transfer_dma); | |
780 | ||
4aa0d037 | 781 | if (urb->transfer_buffer == NULL) { |
133a9fe9 | 782 | pr_err("usb_alloc_coherent failed\n"); |
63eb9546 JFM |
783 | return -ENOMEM; |
784 | } | |
63eb9546 JFM |
785 | urb->dev = gspca_dev->dev; |
786 | urb->context = gspca_dev; | |
63eb9546 | 787 | urb->transfer_buffer_length = bsize; |
0be01004 JFM |
788 | if (npkt != 0) { /* ISOC */ |
789 | urb->pipe = usb_rcvisocpipe(gspca_dev->dev, | |
790 | ep->desc.bEndpointAddress); | |
6c49da7f FZ |
791 | urb->transfer_flags = URB_ISO_ASAP |
792 | | URB_NO_TRANSFER_DMA_MAP; | |
480992b3 JFM |
793 | if (gspca_dev->dev->speed == USB_SPEED_LOW) |
794 | urb->interval = ep->desc.bInterval; | |
795 | else | |
796 | urb->interval = 1 << (ep->desc.bInterval - 1); | |
0be01004 JFM |
797 | urb->complete = isoc_irq; |
798 | urb->number_of_packets = npkt; | |
799 | for (i = 0; i < npkt; i++) { | |
800 | urb->iso_frame_desc[i].length = psize; | |
801 | urb->iso_frame_desc[i].offset = psize * i; | |
802 | } | |
803 | } else { /* bulk */ | |
804 | urb->pipe = usb_rcvbulkpipe(gspca_dev->dev, | |
a23c1947 | 805 | ep->desc.bEndpointAddress); |
6c49da7f | 806 | urb->transfer_flags = URB_NO_TRANSFER_DMA_MAP; |
0be01004 | 807 | urb->complete = bulk_irq; |
63eb9546 JFM |
808 | } |
809 | } | |
810 | return 0; | |
811 | } | |
812 | ||
813 | /* | |
814 | * start the USB transfer | |
815 | */ | |
816 | static int gspca_init_transfer(struct gspca_dev *gspca_dev) | |
817 | { | |
27b12023 | 818 | struct usb_interface *intf; |
63eb9546 | 819 | struct usb_host_endpoint *ep; |
db870875 | 820 | struct urb *urb; |
27b12023 JFM |
821 | struct ep_tb_s ep_tb[MAX_ALT]; |
822 | int n, ret, xfer, alt, alt_idx; | |
63eb9546 | 823 | |
e2997a72 HG |
824 | if (mutex_lock_interruptible(&gspca_dev->usb_lock)) |
825 | return -ERESTARTSYS; | |
63eb9546 | 826 | |
090264e5 JFM |
827 | if (!gspca_dev->present) { |
828 | ret = -ENODEV; | |
314b3e08 | 829 | goto unlock; |
090264e5 JFM |
830 | } |
831 | ||
f7059eaa JFM |
832 | /* reset the streaming variables */ |
833 | gspca_dev->image = NULL; | |
834 | gspca_dev->image_len = 0; | |
835 | gspca_dev->last_packet_type = DISCARD_PACKET; | |
836 | gspca_dev->sequence = 0; | |
837 | ||
ab6c8cf2 JFM |
838 | gspca_dev->usb_err = 0; |
839 | ||
27b12023 | 840 | /* do the specific subdriver stuff before endpoint selection */ |
757e55c2 HG |
841 | intf = usb_ifnum_to_if(gspca_dev->dev, gspca_dev->iface); |
842 | gspca_dev->alt = gspca_dev->cam.bulk ? intf->num_altsetting : 0; | |
1f53b0b0 JFM |
843 | if (gspca_dev->sd_desc->isoc_init) { |
844 | ret = gspca_dev->sd_desc->isoc_init(gspca_dev); | |
845 | if (ret < 0) | |
314b3e08 | 846 | goto unlock; |
1f53b0b0 | 847 | } |
27b12023 JFM |
848 | xfer = gspca_dev->cam.bulk ? USB_ENDPOINT_XFER_BULK |
849 | : USB_ENDPOINT_XFER_ISOC; | |
314b3e08 | 850 | |
27b12023 JFM |
851 | /* if the subdriver forced an altsetting, get the endpoint */ |
852 | if (gspca_dev->alt != 0) { | |
853 | gspca_dev->alt--; /* (previous version compatibility) */ | |
854 | ep = alt_xfer(&intf->altsetting[gspca_dev->alt], xfer); | |
855 | if (ep == NULL) { | |
856 | pr_err("bad altsetting %d\n", gspca_dev->alt); | |
857 | ret = -EIO; | |
858 | goto out; | |
859 | } | |
860 | ep_tb[0].alt = gspca_dev->alt; | |
861 | alt_idx = 1; | |
862 | } else { | |
863 | ||
864 | /* else, compute the minimum bandwidth | |
865 | * and build the endpoint table */ | |
866 | alt_idx = build_ep_tb(gspca_dev, intf, xfer, ep_tb); | |
867 | if (alt_idx <= 0) { | |
868 | pr_err("no transfer endpoint found\n"); | |
869 | ret = -EIO; | |
870 | goto unlock; | |
871 | } | |
1f53b0b0 | 872 | } |
27b12023 JFM |
873 | |
874 | /* set the highest alternate setting and | |
875 | * loop until urb submit succeeds */ | |
876 | gspca_input_destroy_urb(gspca_dev); | |
877 | ||
878 | gspca_dev->alt = ep_tb[--alt_idx].alt; | |
879 | alt = -1; | |
63eb9546 | 880 | for (;;) { |
27b12023 JFM |
881 | if (alt != gspca_dev->alt) { |
882 | alt = gspca_dev->alt; | |
883 | if (gspca_dev->nbalt > 1) { | |
884 | ret = usb_set_interface(gspca_dev->dev, | |
885 | gspca_dev->iface, | |
886 | alt); | |
887 | if (ret < 0) { | |
4274d84c JFM |
888 | if (ret == -ENOSPC) |
889 | goto retry; /*fixme: ugly*/ | |
27b12023 JFM |
890 | pr_err("set alt %d err %d\n", alt, ret); |
891 | goto out; | |
892 | } | |
893 | } | |
894 | } | |
47aaca96 | 895 | if (!gspca_dev->cam.no_urb_create) { |
27b12023 JFM |
896 | PDEBUG(D_STREAM, "init transfer alt %d", alt); |
897 | ret = create_urbs(gspca_dev, | |
898 | alt_xfer(&intf->altsetting[alt], xfer)); | |
47aaca96 JFM |
899 | if (ret < 0) { |
900 | destroy_urbs(gspca_dev); | |
901 | goto out; | |
902 | } | |
db870875 | 903 | } |
63eb9546 | 904 | |
8fe2f1d5 | 905 | /* clear the bulk endpoint */ |
6929dc6b | 906 | if (gspca_dev->cam.bulk) |
8fe2f1d5 | 907 | usb_clear_halt(gspca_dev->dev, |
50e06dee | 908 | gspca_dev->urb[0]->pipe); |
8fe2f1d5 | 909 | |
63eb9546 | 910 | /* start the cam */ |
72ab97ce JFM |
911 | ret = gspca_dev->sd_desc->start(gspca_dev); |
912 | if (ret < 0) { | |
913 | destroy_urbs(gspca_dev); | |
914 | goto out; | |
915 | } | |
63eb9546 | 916 | gspca_dev->streaming = 1; |
63eb9546 | 917 | |
dff369aa | 918 | /* some bulk transfers are started by the subdriver */ |
6929dc6b | 919 | if (gspca_dev->cam.bulk && gspca_dev->cam.bulk_nurbs == 0) |
51977a8d JFM |
920 | break; |
921 | ||
63eb9546 | 922 | /* submit the URBs */ |
db870875 JFM |
923 | for (n = 0; n < MAX_NURBS; n++) { |
924 | urb = gspca_dev->urb[n]; | |
925 | if (urb == NULL) | |
926 | break; | |
927 | ret = usb_submit_urb(urb, GFP_KERNEL); | |
1f53b0b0 JFM |
928 | if (ret < 0) |
929 | break; | |
63eb9546 JFM |
930 | } |
931 | if (ret >= 0) | |
27b12023 JFM |
932 | break; /* transfer is started */ |
933 | ||
934 | /* something when wrong | |
935 | * stop the webcam and free the transfer resources */ | |
e4dac289 | 936 | gspca_stream_off(gspca_dev); |
4bdf4a83 | 937 | if (ret != -ENOSPC) { |
133a9fe9 JP |
938 | pr_err("usb_submit_urb alt %d err %d\n", |
939 | gspca_dev->alt, ret); | |
1f53b0b0 | 940 | goto out; |
4bdf4a83 | 941 | } |
1f53b0b0 JFM |
942 | |
943 | /* the bandwidth is not wide enough | |
25985edc | 944 | * negotiate or try a lower alternate setting */ |
4274d84c | 945 | retry: |
4bdf4a83 | 946 | PDEBUG(D_ERR|D_STREAM, |
27b12023 JFM |
947 | "alt %d - bandwidth not wide enough - trying again", |
948 | alt); | |
1f53b0b0 JFM |
949 | msleep(20); /* wait for kill complete */ |
950 | if (gspca_dev->sd_desc->isoc_nego) { | |
951 | ret = gspca_dev->sd_desc->isoc_nego(gspca_dev); | |
952 | if (ret < 0) | |
953 | goto out; | |
954 | } else { | |
27b12023 JFM |
955 | if (alt_idx <= 0) { |
956 | pr_err("no transfer endpoint found\n"); | |
1f53b0b0 JFM |
957 | ret = -EIO; |
958 | goto out; | |
959 | } | |
27b12023 | 960 | alt = ep_tb[--alt_idx].alt; |
1f53b0b0 | 961 | } |
63eb9546 JFM |
962 | } |
963 | out: | |
314b3e08 HG |
964 | gspca_input_create_urb(gspca_dev); |
965 | unlock: | |
63eb9546 JFM |
966 | mutex_unlock(&gspca_dev->usb_lock); |
967 | return ret; | |
968 | } | |
969 | ||
d43fa32f | 970 | static void gspca_set_default_mode(struct gspca_dev *gspca_dev) |
63eb9546 | 971 | { |
6a33091f | 972 | struct gspca_ctrl *ctrl; |
63eb9546 JFM |
973 | int i; |
974 | ||
975 | i = gspca_dev->cam.nmodes - 1; /* take the highest mode */ | |
976 | gspca_dev->curr_mode = i; | |
977 | gspca_dev->width = gspca_dev->cam.cam_mode[i].width; | |
978 | gspca_dev->height = gspca_dev->cam.cam_mode[i].height; | |
c2446b3e | 979 | gspca_dev->pixfmt = gspca_dev->cam.cam_mode[i].pixelformat; |
6a33091f JFM |
980 | |
981 | /* set the current control values to their default values | |
982 | * which may have changed in sd_init() */ | |
983 | ctrl = gspca_dev->cam.ctrls; | |
984 | if (ctrl != NULL) { | |
985 | for (i = 0; | |
986 | i < gspca_dev->sd_desc->nctrls; | |
987 | i++, ctrl++) | |
988 | ctrl->val = ctrl->def; | |
989 | } | |
63eb9546 JFM |
990 | } |
991 | ||
992 | static int wxh_to_mode(struct gspca_dev *gspca_dev, | |
993 | int width, int height) | |
994 | { | |
995 | int i; | |
996 | ||
d43fa32f JFM |
997 | for (i = gspca_dev->cam.nmodes; --i > 0; ) { |
998 | if (width >= gspca_dev->cam.cam_mode[i].width | |
999 | && height >= gspca_dev->cam.cam_mode[i].height) | |
63eb9546 JFM |
1000 | break; |
1001 | } | |
63eb9546 JFM |
1002 | return i; |
1003 | } | |
1004 | ||
63eb9546 JFM |
1005 | /* |
1006 | * search a mode with the right pixel format | |
1007 | */ | |
1008 | static int gspca_get_mode(struct gspca_dev *gspca_dev, | |
1009 | int mode, | |
1010 | int pixfmt) | |
1011 | { | |
1012 | int modeU, modeD; | |
1013 | ||
1014 | modeU = modeD = mode; | |
1015 | while ((modeU < gspca_dev->cam.nmodes) || modeD >= 0) { | |
1016 | if (--modeD >= 0) { | |
c2446b3e JFM |
1017 | if (gspca_dev->cam.cam_mode[modeD].pixelformat |
1018 | == pixfmt) | |
63eb9546 JFM |
1019 | return modeD; |
1020 | } | |
1021 | if (++modeU < gspca_dev->cam.nmodes) { | |
c2446b3e JFM |
1022 | if (gspca_dev->cam.cam_mode[modeU].pixelformat |
1023 | == pixfmt) | |
63eb9546 JFM |
1024 | return modeU; |
1025 | } | |
1026 | } | |
1027 | return -EINVAL; | |
1028 | } | |
1029 | ||
af1d9afa BJ |
1030 | #ifdef CONFIG_VIDEO_ADV_DEBUG |
1031 | static int vidioc_g_register(struct file *file, void *priv, | |
1032 | struct v4l2_dbg_register *reg) | |
1033 | { | |
1034 | int ret; | |
1035 | struct gspca_dev *gspca_dev = priv; | |
1036 | ||
1037 | if (!gspca_dev->sd_desc->get_chip_ident) | |
1038 | return -EINVAL; | |
1039 | ||
1040 | if (!gspca_dev->sd_desc->get_register) | |
1041 | return -EINVAL; | |
1042 | ||
1043 | if (mutex_lock_interruptible(&gspca_dev->usb_lock)) | |
1044 | return -ERESTARTSYS; | |
8c4ebae4 | 1045 | gspca_dev->usb_err = 0; |
af1d9afa BJ |
1046 | if (gspca_dev->present) |
1047 | ret = gspca_dev->sd_desc->get_register(gspca_dev, reg); | |
1048 | else | |
1049 | ret = -ENODEV; | |
1050 | mutex_unlock(&gspca_dev->usb_lock); | |
1051 | ||
1052 | return ret; | |
1053 | } | |
1054 | ||
1055 | static int vidioc_s_register(struct file *file, void *priv, | |
1056 | struct v4l2_dbg_register *reg) | |
1057 | { | |
1058 | int ret; | |
1059 | struct gspca_dev *gspca_dev = priv; | |
1060 | ||
1061 | if (!gspca_dev->sd_desc->get_chip_ident) | |
1062 | return -EINVAL; | |
1063 | ||
1064 | if (!gspca_dev->sd_desc->set_register) | |
1065 | return -EINVAL; | |
1066 | ||
1067 | if (mutex_lock_interruptible(&gspca_dev->usb_lock)) | |
1068 | return -ERESTARTSYS; | |
8c4ebae4 | 1069 | gspca_dev->usb_err = 0; |
af1d9afa BJ |
1070 | if (gspca_dev->present) |
1071 | ret = gspca_dev->sd_desc->set_register(gspca_dev, reg); | |
1072 | else | |
1073 | ret = -ENODEV; | |
1074 | mutex_unlock(&gspca_dev->usb_lock); | |
1075 | ||
1076 | return ret; | |
1077 | } | |
1078 | #endif | |
1079 | ||
1080 | static int vidioc_g_chip_ident(struct file *file, void *priv, | |
1081 | struct v4l2_dbg_chip_ident *chip) | |
1082 | { | |
1083 | int ret; | |
1084 | struct gspca_dev *gspca_dev = priv; | |
1085 | ||
1086 | if (!gspca_dev->sd_desc->get_chip_ident) | |
1087 | return -EINVAL; | |
1088 | ||
1089 | if (mutex_lock_interruptible(&gspca_dev->usb_lock)) | |
1090 | return -ERESTARTSYS; | |
8c4ebae4 | 1091 | gspca_dev->usb_err = 0; |
af1d9afa BJ |
1092 | if (gspca_dev->present) |
1093 | ret = gspca_dev->sd_desc->get_chip_ident(gspca_dev, chip); | |
1094 | else | |
1095 | ret = -ENODEV; | |
1096 | mutex_unlock(&gspca_dev->usb_lock); | |
1097 | ||
1098 | return ret; | |
1099 | } | |
1100 | ||
e078770a | 1101 | static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv, |
63eb9546 JFM |
1102 | struct v4l2_fmtdesc *fmtdesc) |
1103 | { | |
1104 | struct gspca_dev *gspca_dev = priv; | |
6a7eba24 | 1105 | int i, j, index; |
63eb9546 JFM |
1106 | __u32 fmt_tb[8]; |
1107 | ||
63eb9546 JFM |
1108 | /* give an index to each format */ |
1109 | index = 0; | |
1110 | j = 0; | |
1111 | for (i = gspca_dev->cam.nmodes; --i >= 0; ) { | |
c2446b3e | 1112 | fmt_tb[index] = gspca_dev->cam.cam_mode[i].pixelformat; |
63eb9546 JFM |
1113 | j = 0; |
1114 | for (;;) { | |
1115 | if (fmt_tb[j] == fmt_tb[index]) | |
1116 | break; | |
1117 | j++; | |
1118 | } | |
1119 | if (j == index) { | |
1120 | if (fmtdesc->index == index) | |
1121 | break; /* new format */ | |
1122 | index++; | |
80297125 | 1123 | if (index >= ARRAY_SIZE(fmt_tb)) |
63eb9546 JFM |
1124 | return -EINVAL; |
1125 | } | |
1126 | } | |
1127 | if (i < 0) | |
1128 | return -EINVAL; /* no more format */ | |
1129 | ||
63eb9546 | 1130 | fmtdesc->pixelformat = fmt_tb[index]; |
b796fb6e JFM |
1131 | if (gspca_dev->cam.cam_mode[i].sizeimage < |
1132 | gspca_dev->cam.cam_mode[i].width * | |
1133 | gspca_dev->cam.cam_mode[i].height) | |
63eb9546 JFM |
1134 | fmtdesc->flags = V4L2_FMT_FLAG_COMPRESSED; |
1135 | fmtdesc->description[0] = fmtdesc->pixelformat & 0xff; | |
1136 | fmtdesc->description[1] = (fmtdesc->pixelformat >> 8) & 0xff; | |
1137 | fmtdesc->description[2] = (fmtdesc->pixelformat >> 16) & 0xff; | |
1138 | fmtdesc->description[3] = fmtdesc->pixelformat >> 24; | |
1139 | fmtdesc->description[4] = '\0'; | |
1140 | return 0; | |
1141 | } | |
1142 | ||
e078770a | 1143 | static int vidioc_g_fmt_vid_cap(struct file *file, void *priv, |
63eb9546 JFM |
1144 | struct v4l2_format *fmt) |
1145 | { | |
1146 | struct gspca_dev *gspca_dev = priv; | |
c2446b3e | 1147 | int mode; |
63eb9546 | 1148 | |
c2446b3e JFM |
1149 | mode = gspca_dev->curr_mode; |
1150 | memcpy(&fmt->fmt.pix, &gspca_dev->cam.cam_mode[mode], | |
1151 | sizeof fmt->fmt.pix); | |
63eb9546 JFM |
1152 | return 0; |
1153 | } | |
1154 | ||
e078770a | 1155 | static int try_fmt_vid_cap(struct gspca_dev *gspca_dev, |
63eb9546 JFM |
1156 | struct v4l2_format *fmt) |
1157 | { | |
24c530b4 | 1158 | int w, h, mode, mode2; |
63eb9546 | 1159 | |
4aa0d037 JFM |
1160 | w = fmt->fmt.pix.width; |
1161 | h = fmt->fmt.pix.height; | |
d43fa32f | 1162 | |
335b3f88 | 1163 | #ifdef GSPCA_DEBUG |
63eb9546 JFM |
1164 | if (gspca_debug & D_CONF) |
1165 | PDEBUG_MODE("try fmt cap", fmt->fmt.pix.pixelformat, w, h); | |
1166 | #endif | |
1167 | /* search the closest mode for width and height */ | |
1168 | mode = wxh_to_mode(gspca_dev, w, h); | |
1169 | ||
1170 | /* OK if right palette */ | |
c2446b3e JFM |
1171 | if (gspca_dev->cam.cam_mode[mode].pixelformat |
1172 | != fmt->fmt.pix.pixelformat) { | |
63eb9546 JFM |
1173 | |
1174 | /* else, search the closest mode with the same pixel format */ | |
1175 | mode2 = gspca_get_mode(gspca_dev, mode, | |
1176 | fmt->fmt.pix.pixelformat); | |
c2446b3e | 1177 | if (mode2 >= 0) |
63eb9546 | 1178 | mode = mode2; |
c2446b3e JFM |
1179 | /* else |
1180 | ; * no chance, return this mode */ | |
63eb9546 | 1181 | } |
c2446b3e JFM |
1182 | memcpy(&fmt->fmt.pix, &gspca_dev->cam.cam_mode[mode], |
1183 | sizeof fmt->fmt.pix); | |
63eb9546 JFM |
1184 | return mode; /* used when s_fmt */ |
1185 | } | |
1186 | ||
e078770a | 1187 | static int vidioc_try_fmt_vid_cap(struct file *file, |
63eb9546 JFM |
1188 | void *priv, |
1189 | struct v4l2_format *fmt) | |
1190 | { | |
4aa0d037 | 1191 | struct gspca_dev *gspca_dev = priv; |
63eb9546 JFM |
1192 | int ret; |
1193 | ||
e078770a | 1194 | ret = try_fmt_vid_cap(gspca_dev, fmt); |
63eb9546 JFM |
1195 | if (ret < 0) |
1196 | return ret; | |
1197 | return 0; | |
1198 | } | |
1199 | ||
e078770a | 1200 | static int vidioc_s_fmt_vid_cap(struct file *file, void *priv, |
63eb9546 JFM |
1201 | struct v4l2_format *fmt) |
1202 | { | |
1203 | struct gspca_dev *gspca_dev = priv; | |
d43fa32f | 1204 | int ret; |
63eb9546 | 1205 | |
e2997a72 HG |
1206 | if (mutex_lock_interruptible(&gspca_dev->queue_lock)) |
1207 | return -ERESTARTSYS; | |
d43fa32f | 1208 | |
e078770a | 1209 | ret = try_fmt_vid_cap(gspca_dev, fmt); |
63eb9546 JFM |
1210 | if (ret < 0) |
1211 | goto out; | |
1212 | ||
d43fa32f JFM |
1213 | if (gspca_dev->nframes != 0 |
1214 | && fmt->fmt.pix.sizeimage > gspca_dev->frsz) { | |
1215 | ret = -EINVAL; | |
1216 | goto out; | |
1217 | } | |
1218 | ||
50a871fe JFM |
1219 | if (ret == gspca_dev->curr_mode) { |
1220 | ret = 0; | |
63eb9546 | 1221 | goto out; /* same mode */ |
50a871fe | 1222 | } |
d43fa32f JFM |
1223 | |
1224 | if (gspca_dev->streaming) { | |
1225 | ret = -EBUSY; | |
1226 | goto out; | |
e2997a72 | 1227 | } |
4aa0d037 JFM |
1228 | gspca_dev->width = fmt->fmt.pix.width; |
1229 | gspca_dev->height = fmt->fmt.pix.height; | |
63eb9546 JFM |
1230 | gspca_dev->pixfmt = fmt->fmt.pix.pixelformat; |
1231 | gspca_dev->curr_mode = ret; | |
d43fa32f | 1232 | |
d43fa32f | 1233 | ret = 0; |
63eb9546 JFM |
1234 | out: |
1235 | mutex_unlock(&gspca_dev->queue_lock); | |
1236 | return ret; | |
1237 | } | |
1238 | ||
11c635a2 HG |
1239 | static int vidioc_enum_framesizes(struct file *file, void *priv, |
1240 | struct v4l2_frmsizeenum *fsize) | |
1241 | { | |
1242 | struct gspca_dev *gspca_dev = priv; | |
1243 | int i; | |
1244 | __u32 index = 0; | |
1245 | ||
1246 | for (i = 0; i < gspca_dev->cam.nmodes; i++) { | |
1247 | if (fsize->pixel_format != | |
1248 | gspca_dev->cam.cam_mode[i].pixelformat) | |
1249 | continue; | |
1250 | ||
1251 | if (fsize->index == index) { | |
1252 | fsize->type = V4L2_FRMSIZE_TYPE_DISCRETE; | |
1253 | fsize->discrete.width = | |
1254 | gspca_dev->cam.cam_mode[i].width; | |
1255 | fsize->discrete.height = | |
1256 | gspca_dev->cam.cam_mode[i].height; | |
1257 | return 0; | |
1258 | } | |
1259 | index++; | |
1260 | } | |
1261 | ||
1262 | return -EINVAL; | |
1263 | } | |
1264 | ||
28ffe77f AO |
1265 | static int vidioc_enum_frameintervals(struct file *filp, void *priv, |
1266 | struct v4l2_frmivalenum *fival) | |
1267 | { | |
1268 | struct gspca_dev *gspca_dev = priv; | |
1269 | int mode = wxh_to_mode(gspca_dev, fival->width, fival->height); | |
1270 | __u32 i; | |
1271 | ||
1272 | if (gspca_dev->cam.mode_framerates == NULL || | |
1273 | gspca_dev->cam.mode_framerates[mode].nrates == 0) | |
1274 | return -EINVAL; | |
1275 | ||
1276 | if (fival->pixel_format != | |
1277 | gspca_dev->cam.cam_mode[mode].pixelformat) | |
1278 | return -EINVAL; | |
1279 | ||
1280 | for (i = 0; i < gspca_dev->cam.mode_framerates[mode].nrates; i++) { | |
1281 | if (fival->index == i) { | |
1282 | fival->type = V4L2_FRMSIZE_TYPE_DISCRETE; | |
1283 | fival->discrete.numerator = 1; | |
1284 | fival->discrete.denominator = | |
1285 | gspca_dev->cam.mode_framerates[mode].rates[i]; | |
1286 | return 0; | |
1287 | } | |
1288 | } | |
1289 | ||
1290 | return -EINVAL; | |
1291 | } | |
1292 | ||
d0182306 | 1293 | static void gspca_release(struct video_device *vfd) |
6b060ffe | 1294 | { |
d0182306 | 1295 | struct gspca_dev *gspca_dev = container_of(vfd, struct gspca_dev, vdev); |
6b060ffe | 1296 | |
38c7c036 LP |
1297 | PDEBUG(D_PROBE, "%s released", |
1298 | video_device_node_name(&gspca_dev->vdev)); | |
6b060ffe FZ |
1299 | |
1300 | kfree(gspca_dev->usb_buf); | |
1301 | kfree(gspca_dev); | |
1302 | } | |
1303 | ||
bec43661 | 1304 | static int dev_open(struct file *file) |
63eb9546 JFM |
1305 | { |
1306 | struct gspca_dev *gspca_dev; | |
63eb9546 | 1307 | |
0d07e240 | 1308 | PDEBUG(D_STREAM, "[%s] open", current->comm); |
a12ca6a6 | 1309 | gspca_dev = (struct gspca_dev *) video_devdata(file); |
7f6eb118 HG |
1310 | if (!gspca_dev->present) |
1311 | return -ENODEV; | |
5c4fa002 JFM |
1312 | |
1313 | /* protect the subdriver against rmmod */ | |
7f6eb118 HG |
1314 | if (!try_module_get(gspca_dev->module)) |
1315 | return -ENODEV; | |
6b060ffe | 1316 | |
63eb9546 | 1317 | file->private_data = gspca_dev; |
335b3f88 | 1318 | #ifdef GSPCA_DEBUG |
63eb9546 | 1319 | /* activate the v4l2 debug */ |
d43fa32f | 1320 | if (gspca_debug & D_V4L2) |
a12ca6a6 | 1321 | gspca_dev->vdev.debug |= V4L2_DEBUG_IOCTL |
9de436cf | 1322 | | V4L2_DEBUG_IOCTL_ARG; |
63eb9546 | 1323 | else |
a12ca6a6 | 1324 | gspca_dev->vdev.debug &= ~(V4L2_DEBUG_IOCTL |
9de436cf | 1325 | | V4L2_DEBUG_IOCTL_ARG); |
63eb9546 | 1326 | #endif |
7f6eb118 | 1327 | return 0; |
63eb9546 JFM |
1328 | } |
1329 | ||
bec43661 | 1330 | static int dev_close(struct file *file) |
63eb9546 JFM |
1331 | { |
1332 | struct gspca_dev *gspca_dev = file->private_data; | |
1333 | ||
0d07e240 | 1334 | PDEBUG(D_STREAM, "[%s] close", current->comm); |
e2997a72 HG |
1335 | if (mutex_lock_interruptible(&gspca_dev->queue_lock)) |
1336 | return -ERESTARTSYS; | |
e2997a72 | 1337 | |
5b77ae77 | 1338 | /* if the file did the capture, free the streaming resources */ |
4aa0d037 | 1339 | if (gspca_dev->capt_file == file) { |
a1e8288b JFM |
1340 | if (gspca_dev->streaming) { |
1341 | mutex_lock(&gspca_dev->usb_lock); | |
8c4ebae4 | 1342 | gspca_dev->usb_err = 0; |
a1e8288b JFM |
1343 | gspca_stream_off(gspca_dev); |
1344 | mutex_unlock(&gspca_dev->usb_lock); | |
1345 | } | |
4aa0d037 | 1346 | frame_free(gspca_dev); |
4aa0d037 | 1347 | } |
d43fa32f | 1348 | file->private_data = NULL; |
5c4fa002 | 1349 | module_put(gspca_dev->module); |
63eb9546 | 1350 | mutex_unlock(&gspca_dev->queue_lock); |
6b060ffe | 1351 | |
d43fa32f | 1352 | PDEBUG(D_STREAM, "close done"); |
6b060ffe | 1353 | |
63eb9546 JFM |
1354 | return 0; |
1355 | } | |
1356 | ||
1357 | static int vidioc_querycap(struct file *file, void *priv, | |
1358 | struct v4l2_capability *cap) | |
1359 | { | |
1360 | struct gspca_dev *gspca_dev = priv; | |
090264e5 | 1361 | int ret; |
63eb9546 | 1362 | |
090264e5 JFM |
1363 | /* protect the access to the usb device */ |
1364 | if (mutex_lock_interruptible(&gspca_dev->usb_lock)) | |
1365 | return -ERESTARTSYS; | |
1366 | if (!gspca_dev->present) { | |
1367 | ret = -ENODEV; | |
1368 | goto out; | |
1369 | } | |
e7d712cc | 1370 | strlcpy((char *) cap->driver, gspca_dev->sd_desc->name, |
d8518590 | 1371 | sizeof cap->driver); |
c6edaf16 | 1372 | if (gspca_dev->dev->product != NULL) { |
e7d712cc | 1373 | strlcpy((char *) cap->card, gspca_dev->dev->product, |
c6edaf16 JFM |
1374 | sizeof cap->card); |
1375 | } else { | |
d8518590 | 1376 | snprintf((char *) cap->card, sizeof cap->card, |
c6edaf16 JFM |
1377 | "USB Camera (%04x:%04x)", |
1378 | le16_to_cpu(gspca_dev->dev->descriptor.idVendor), | |
1379 | le16_to_cpu(gspca_dev->dev->descriptor.idProduct)); | |
1380 | } | |
d8518590 JFM |
1381 | usb_make_path(gspca_dev->dev, (char *) cap->bus_info, |
1382 | sizeof(cap->bus_info)); | |
63eb9546 JFM |
1383 | cap->capabilities = V4L2_CAP_VIDEO_CAPTURE |
1384 | | V4L2_CAP_STREAMING | |
1385 | | V4L2_CAP_READWRITE; | |
090264e5 JFM |
1386 | ret = 0; |
1387 | out: | |
1388 | mutex_unlock(&gspca_dev->usb_lock); | |
1389 | return ret; | |
63eb9546 JFM |
1390 | } |
1391 | ||
6a33091f | 1392 | static int get_ctrl(struct gspca_dev *gspca_dev, |
a0001a28 HG |
1393 | int id) |
1394 | { | |
1395 | const struct ctrl *ctrls; | |
1396 | int i; | |
1397 | ||
1398 | for (i = 0, ctrls = gspca_dev->sd_desc->ctrls; | |
1399 | i < gspca_dev->sd_desc->nctrls; | |
1400 | i++, ctrls++) { | |
1401 | if (gspca_dev->ctrl_dis & (1 << i)) | |
1402 | continue; | |
1403 | if (id == ctrls->qctrl.id) | |
6a33091f | 1404 | return i; |
a0001a28 | 1405 | } |
6a33091f | 1406 | return -1; |
a0001a28 HG |
1407 | } |
1408 | ||
63eb9546 JFM |
1409 | static int vidioc_queryctrl(struct file *file, void *priv, |
1410 | struct v4l2_queryctrl *q_ctrl) | |
1411 | { | |
1412 | struct gspca_dev *gspca_dev = priv; | |
a0001a28 | 1413 | const struct ctrl *ctrls; |
6a33091f JFM |
1414 | struct gspca_ctrl *gspca_ctrl; |
1415 | int i, idx; | |
6a7eba24 JFM |
1416 | u32 id; |
1417 | ||
1418 | id = q_ctrl->id; | |
1419 | if (id & V4L2_CTRL_FLAG_NEXT_CTRL) { | |
1420 | id &= V4L2_CTRL_ID_MASK; | |
1421 | id++; | |
6a33091f | 1422 | idx = -1; |
6a7eba24 | 1423 | for (i = 0; i < gspca_dev->sd_desc->nctrls; i++) { |
a0001a28 | 1424 | if (gspca_dev->ctrl_dis & (1 << i)) |
f50ba1be | 1425 | continue; |
b8bfb5fb | 1426 | if (gspca_dev->sd_desc->ctrls[i].qctrl.id < id) |
f50ba1be | 1427 | continue; |
6a33091f JFM |
1428 | if (idx >= 0 |
1429 | && gspca_dev->sd_desc->ctrls[i].qctrl.id | |
780e3121 | 1430 | > gspca_dev->sd_desc->ctrls[idx].qctrl.id) |
b8bfb5fb | 1431 | continue; |
6a33091f | 1432 | idx = i; |
63eb9546 | 1433 | } |
a0001a28 | 1434 | } else { |
6a33091f | 1435 | idx = get_ctrl(gspca_dev, id); |
63eb9546 | 1436 | } |
6a33091f JFM |
1437 | if (idx < 0) |
1438 | return -EINVAL; | |
1439 | ctrls = &gspca_dev->sd_desc->ctrls[idx]; | |
1440 | memcpy(q_ctrl, &ctrls->qctrl, sizeof *q_ctrl); | |
1441 | if (gspca_dev->cam.ctrls != NULL) { | |
1442 | gspca_ctrl = &gspca_dev->cam.ctrls[idx]; | |
1443 | q_ctrl->default_value = gspca_ctrl->def; | |
1444 | q_ctrl->minimum = gspca_ctrl->min; | |
1445 | q_ctrl->maximum = gspca_ctrl->max; | |
1446 | } | |
1447 | if (gspca_dev->ctrl_inac & (1 << idx)) | |
4af85668 | 1448 | q_ctrl->flags |= V4L2_CTRL_FLAG_INACTIVE; |
f50ba1be | 1449 | return 0; |
63eb9546 JFM |
1450 | } |
1451 | ||
1452 | static int vidioc_s_ctrl(struct file *file, void *priv, | |
1453 | struct v4l2_control *ctrl) | |
1454 | { | |
1455 | struct gspca_dev *gspca_dev = priv; | |
a5ae2062 | 1456 | const struct ctrl *ctrls; |
6a33091f JFM |
1457 | struct gspca_ctrl *gspca_ctrl; |
1458 | int idx, ret; | |
63eb9546 | 1459 | |
6a33091f JFM |
1460 | idx = get_ctrl(gspca_dev, ctrl->id); |
1461 | if (idx < 0) | |
a0001a28 | 1462 | return -EINVAL; |
6a33091f JFM |
1463 | if (gspca_dev->ctrl_inac & (1 << idx)) |
1464 | return -EINVAL; | |
1465 | ctrls = &gspca_dev->sd_desc->ctrls[idx]; | |
1466 | if (gspca_dev->cam.ctrls != NULL) { | |
1467 | gspca_ctrl = &gspca_dev->cam.ctrls[idx]; | |
1468 | if (ctrl->value < gspca_ctrl->min | |
1469 | || ctrl->value > gspca_ctrl->max) | |
1470 | return -ERANGE; | |
1471 | } else { | |
1472 | gspca_ctrl = NULL; | |
1473 | if (ctrl->value < ctrls->qctrl.minimum | |
1474 | || ctrl->value > ctrls->qctrl.maximum) | |
1475 | return -ERANGE; | |
1476 | } | |
a0001a28 HG |
1477 | PDEBUG(D_CONF, "set ctrl [%08x] = %d", ctrl->id, ctrl->value); |
1478 | if (mutex_lock_interruptible(&gspca_dev->usb_lock)) | |
1479 | return -ERESTARTSYS; | |
6a33091f JFM |
1480 | if (!gspca_dev->present) { |
1481 | ret = -ENODEV; | |
1482 | goto out; | |
1483 | } | |
8c4ebae4 | 1484 | gspca_dev->usb_err = 0; |
6a33091f | 1485 | if (ctrls->set != NULL) { |
a0001a28 | 1486 | ret = ctrls->set(gspca_dev, ctrl->value); |
6a33091f JFM |
1487 | goto out; |
1488 | } | |
1489 | if (gspca_ctrl != NULL) { | |
1490 | gspca_ctrl->val = ctrl->value; | |
1491 | if (ctrls->set_control != NULL | |
1492 | && gspca_dev->streaming) | |
1493 | ctrls->set_control(gspca_dev); | |
1494 | } | |
1495 | ret = gspca_dev->usb_err; | |
1496 | out: | |
a0001a28 HG |
1497 | mutex_unlock(&gspca_dev->usb_lock); |
1498 | return ret; | |
63eb9546 JFM |
1499 | } |
1500 | ||
1501 | static int vidioc_g_ctrl(struct file *file, void *priv, | |
1502 | struct v4l2_control *ctrl) | |
1503 | { | |
1504 | struct gspca_dev *gspca_dev = priv; | |
a5ae2062 | 1505 | const struct ctrl *ctrls; |
6a33091f | 1506 | int idx, ret; |
63eb9546 | 1507 | |
6a33091f JFM |
1508 | idx = get_ctrl(gspca_dev, ctrl->id); |
1509 | if (idx < 0) | |
a0001a28 | 1510 | return -EINVAL; |
6a33091f | 1511 | ctrls = &gspca_dev->sd_desc->ctrls[idx]; |
a0001a28 HG |
1512 | |
1513 | if (mutex_lock_interruptible(&gspca_dev->usb_lock)) | |
1514 | return -ERESTARTSYS; | |
6a33091f JFM |
1515 | if (!gspca_dev->present) { |
1516 | ret = -ENODEV; | |
1517 | goto out; | |
1518 | } | |
8c4ebae4 | 1519 | gspca_dev->usb_err = 0; |
6a33091f | 1520 | if (ctrls->get != NULL) { |
a0001a28 | 1521 | ret = ctrls->get(gspca_dev, &ctrl->value); |
6a33091f JFM |
1522 | goto out; |
1523 | } | |
1524 | if (gspca_dev->cam.ctrls != NULL) | |
1525 | ctrl->value = gspca_dev->cam.ctrls[idx].val; | |
1526 | ret = 0; | |
1527 | out: | |
a0001a28 HG |
1528 | mutex_unlock(&gspca_dev->usb_lock); |
1529 | return ret; | |
63eb9546 JFM |
1530 | } |
1531 | ||
1532 | static int vidioc_querymenu(struct file *file, void *priv, | |
1533 | struct v4l2_querymenu *qmenu) | |
1534 | { | |
1535 | struct gspca_dev *gspca_dev = priv; | |
1536 | ||
1537 | if (!gspca_dev->sd_desc->querymenu) | |
1538 | return -EINVAL; | |
1539 | return gspca_dev->sd_desc->querymenu(gspca_dev, qmenu); | |
1540 | } | |
1541 | ||
1542 | static int vidioc_enum_input(struct file *file, void *priv, | |
1543 | struct v4l2_input *input) | |
1544 | { | |
1545 | struct gspca_dev *gspca_dev = priv; | |
1546 | ||
1547 | if (input->index != 0) | |
1548 | return -EINVAL; | |
63eb9546 | 1549 | input->type = V4L2_INPUT_TYPE_CAMERA; |
dfa76fa2 | 1550 | input->status = gspca_dev->cam.input_flags; |
e7d712cc | 1551 | strlcpy(input->name, gspca_dev->sd_desc->name, |
63eb9546 JFM |
1552 | sizeof input->name); |
1553 | return 0; | |
1554 | } | |
1555 | ||
1556 | static int vidioc_g_input(struct file *file, void *priv, unsigned int *i) | |
1557 | { | |
1558 | *i = 0; | |
1559 | return 0; | |
1560 | } | |
1561 | ||
1562 | static int vidioc_s_input(struct file *file, void *priv, unsigned int i) | |
1563 | { | |
1564 | if (i > 0) | |
1565 | return -EINVAL; | |
1566 | return (0); | |
1567 | } | |
1568 | ||
1569 | static int vidioc_reqbufs(struct file *file, void *priv, | |
1570 | struct v4l2_requestbuffers *rb) | |
1571 | { | |
1572 | struct gspca_dev *gspca_dev = priv; | |
832d0a91 | 1573 | int i, ret = 0, streaming; |
63eb9546 | 1574 | |
a2ba6f27 JFM |
1575 | i = rb->memory; /* (avoid compilation warning) */ |
1576 | switch (i) { | |
5b77ae77 | 1577 | case GSPCA_MEMORY_READ: /* (internal call) */ |
d43fa32f | 1578 | case V4L2_MEMORY_MMAP: |
d43fa32f | 1579 | case V4L2_MEMORY_USERPTR: |
6a7eba24 | 1580 | break; |
d43fa32f | 1581 | default: |
63eb9546 | 1582 | return -EINVAL; |
d43fa32f | 1583 | } |
e2997a72 HG |
1584 | if (mutex_lock_interruptible(&gspca_dev->queue_lock)) |
1585 | return -ERESTARTSYS; | |
d43fa32f | 1586 | |
5b77ae77 | 1587 | if (gspca_dev->memory != GSPCA_MEMORY_NO |
ce5610bc | 1588 | && gspca_dev->memory != GSPCA_MEMORY_READ |
5b77ae77 | 1589 | && gspca_dev->memory != rb->memory) { |
4aa0d037 JFM |
1590 | ret = -EBUSY; |
1591 | goto out; | |
1592 | } | |
d43fa32f | 1593 | |
5b77ae77 JFM |
1594 | /* only one file may do the capture */ |
1595 | if (gspca_dev->capt_file != NULL | |
1596 | && gspca_dev->capt_file != file) { | |
1597 | ret = -EBUSY; | |
1598 | goto out; | |
1599 | } | |
1600 | ||
1601 | /* if allocated, the buffers must not be mapped */ | |
1602 | for (i = 0; i < gspca_dev->nframes; i++) { | |
1603 | if (gspca_dev->frame[i].vma_use_count) { | |
ac0d6df6 JFM |
1604 | ret = -EBUSY; |
1605 | goto out; | |
1606 | } | |
5b77ae77 JFM |
1607 | } |
1608 | ||
1609 | /* stop streaming */ | |
832d0a91 JFM |
1610 | streaming = gspca_dev->streaming; |
1611 | if (streaming) { | |
5b77ae77 | 1612 | mutex_lock(&gspca_dev->usb_lock); |
8c4ebae4 | 1613 | gspca_dev->usb_err = 0; |
5b77ae77 JFM |
1614 | gspca_stream_off(gspca_dev); |
1615 | mutex_unlock(&gspca_dev->usb_lock); | |
59929cef JFM |
1616 | |
1617 | /* Don't restart the stream when switching from read | |
1618 | * to mmap mode */ | |
1619 | if (gspca_dev->memory == GSPCA_MEMORY_READ) | |
1620 | streaming = 0; | |
5b77ae77 JFM |
1621 | } |
1622 | ||
1623 | /* free the previous allocated buffers, if any */ | |
d642de2e | 1624 | if (gspca_dev->nframes != 0) |
5b77ae77 | 1625 | frame_free(gspca_dev); |
5b77ae77 JFM |
1626 | if (rb->count == 0) /* unrequest */ |
1627 | goto out; | |
d642de2e | 1628 | ret = frame_alloc(gspca_dev, file, rb->memory, rb->count); |
5b77ae77 JFM |
1629 | if (ret == 0) { |
1630 | rb->count = gspca_dev->nframes; | |
832d0a91 JFM |
1631 | if (streaming) |
1632 | ret = gspca_init_transfer(gspca_dev); | |
4aa0d037 JFM |
1633 | } |
1634 | out: | |
63eb9546 JFM |
1635 | mutex_unlock(&gspca_dev->queue_lock); |
1636 | PDEBUG(D_STREAM, "reqbufs st:%d c:%d", ret, rb->count); | |
1637 | return ret; | |
1638 | } | |
1639 | ||
1640 | static int vidioc_querybuf(struct file *file, void *priv, | |
1641 | struct v4l2_buffer *v4l2_buf) | |
1642 | { | |
1643 | struct gspca_dev *gspca_dev = priv; | |
1644 | struct gspca_frame *frame; | |
1645 | ||
13752bd9 | 1646 | if (v4l2_buf->index < 0 |
63eb9546 JFM |
1647 | || v4l2_buf->index >= gspca_dev->nframes) |
1648 | return -EINVAL; | |
1649 | ||
1650 | frame = &gspca_dev->frame[v4l2_buf->index]; | |
1651 | memcpy(v4l2_buf, &frame->v4l2_buf, sizeof *v4l2_buf); | |
1652 | return 0; | |
1653 | } | |
1654 | ||
1655 | static int vidioc_streamon(struct file *file, void *priv, | |
1656 | enum v4l2_buf_type buf_type) | |
1657 | { | |
1658 | struct gspca_dev *gspca_dev = priv; | |
1659 | int ret; | |
1660 | ||
63eb9546 JFM |
1661 | if (buf_type != V4L2_BUF_TYPE_VIDEO_CAPTURE) |
1662 | return -EINVAL; | |
e2997a72 HG |
1663 | if (mutex_lock_interruptible(&gspca_dev->queue_lock)) |
1664 | return -ERESTARTSYS; | |
090264e5 | 1665 | |
18bf99aa JFM |
1666 | /* check the capture file */ |
1667 | if (gspca_dev->capt_file != file) { | |
1668 | ret = -EBUSY; | |
1669 | goto out; | |
1670 | } | |
1671 | ||
1edabe71 JFM |
1672 | if (gspca_dev->nframes == 0 |
1673 | || !(gspca_dev->frame[0].v4l2_buf.flags & V4L2_BUF_FLAG_QUEUED)) { | |
63eb9546 JFM |
1674 | ret = -EINVAL; |
1675 | goto out; | |
1676 | } | |
1677 | if (!gspca_dev->streaming) { | |
1678 | ret = gspca_init_transfer(gspca_dev); | |
1679 | if (ret < 0) | |
1680 | goto out; | |
1681 | } | |
335b3f88 | 1682 | #ifdef GSPCA_DEBUG |
63eb9546 JFM |
1683 | if (gspca_debug & D_STREAM) { |
1684 | PDEBUG_MODE("stream on OK", | |
1685 | gspca_dev->pixfmt, | |
1686 | gspca_dev->width, | |
1687 | gspca_dev->height); | |
1688 | } | |
1689 | #endif | |
e2997a72 | 1690 | ret = 0; |
63eb9546 JFM |
1691 | out: |
1692 | mutex_unlock(&gspca_dev->queue_lock); | |
1693 | return ret; | |
1694 | } | |
1695 | ||
1696 | static int vidioc_streamoff(struct file *file, void *priv, | |
1697 | enum v4l2_buf_type buf_type) | |
1698 | { | |
1699 | struct gspca_dev *gspca_dev = priv; | |
f7059eaa | 1700 | int ret; |
63eb9546 | 1701 | |
63eb9546 JFM |
1702 | if (buf_type != V4L2_BUF_TYPE_VIDEO_CAPTURE) |
1703 | return -EINVAL; | |
4e770f76 | 1704 | |
4aa0d037 JFM |
1705 | if (mutex_lock_interruptible(&gspca_dev->queue_lock)) |
1706 | return -ERESTARTSYS; | |
5b77ae77 | 1707 | |
4e770f76 HG |
1708 | if (!gspca_dev->streaming) { |
1709 | ret = 0; | |
1710 | goto out; | |
1711 | } | |
1712 | ||
18bf99aa JFM |
1713 | /* check the capture file */ |
1714 | if (gspca_dev->capt_file != file) { | |
1715 | ret = -EBUSY; | |
1716 | goto out; | |
1717 | } | |
1718 | ||
5b77ae77 | 1719 | /* stop streaming */ |
4aa0d037 JFM |
1720 | if (mutex_lock_interruptible(&gspca_dev->usb_lock)) { |
1721 | ret = -ERESTARTSYS; | |
1722 | goto out; | |
63eb9546 | 1723 | } |
8c4ebae4 | 1724 | gspca_dev->usb_err = 0; |
4aa0d037 | 1725 | gspca_stream_off(gspca_dev); |
4aa0d037 | 1726 | mutex_unlock(&gspca_dev->usb_lock); |
0d0ae15d HG |
1727 | /* In case another thread is waiting in dqbuf */ |
1728 | wake_up_interruptible(&gspca_dev->wq); | |
5b77ae77 | 1729 | |
f7059eaa JFM |
1730 | /* empty the transfer queues */ |
1731 | atomic_set(&gspca_dev->fr_q, 0); | |
1732 | atomic_set(&gspca_dev->fr_i, 0); | |
1733 | gspca_dev->fr_o = 0; | |
5b77ae77 | 1734 | ret = 0; |
4aa0d037 JFM |
1735 | out: |
1736 | mutex_unlock(&gspca_dev->queue_lock); | |
1737 | return ret; | |
63eb9546 JFM |
1738 | } |
1739 | ||
1740 | static int vidioc_g_jpegcomp(struct file *file, void *priv, | |
1741 | struct v4l2_jpegcompression *jpegcomp) | |
1742 | { | |
1743 | struct gspca_dev *gspca_dev = priv; | |
1744 | int ret; | |
1745 | ||
1746 | if (!gspca_dev->sd_desc->get_jcomp) | |
1747 | return -EINVAL; | |
e2997a72 HG |
1748 | if (mutex_lock_interruptible(&gspca_dev->usb_lock)) |
1749 | return -ERESTARTSYS; | |
8c4ebae4 | 1750 | gspca_dev->usb_err = 0; |
090264e5 JFM |
1751 | if (gspca_dev->present) |
1752 | ret = gspca_dev->sd_desc->get_jcomp(gspca_dev, jpegcomp); | |
1753 | else | |
1754 | ret = -ENODEV; | |
63eb9546 JFM |
1755 | mutex_unlock(&gspca_dev->usb_lock); |
1756 | return ret; | |
1757 | } | |
1758 | ||
1759 | static int vidioc_s_jpegcomp(struct file *file, void *priv, | |
1760 | struct v4l2_jpegcompression *jpegcomp) | |
1761 | { | |
1762 | struct gspca_dev *gspca_dev = priv; | |
1763 | int ret; | |
1764 | ||
63eb9546 JFM |
1765 | if (!gspca_dev->sd_desc->set_jcomp) |
1766 | return -EINVAL; | |
f86d4a91 JP |
1767 | if (mutex_lock_interruptible(&gspca_dev->usb_lock)) |
1768 | return -ERESTARTSYS; | |
8c4ebae4 | 1769 | gspca_dev->usb_err = 0; |
090264e5 JFM |
1770 | if (gspca_dev->present) |
1771 | ret = gspca_dev->sd_desc->set_jcomp(gspca_dev, jpegcomp); | |
1772 | else | |
1773 | ret = -ENODEV; | |
63eb9546 JFM |
1774 | mutex_unlock(&gspca_dev->usb_lock); |
1775 | return ret; | |
1776 | } | |
1777 | ||
1778 | static int vidioc_g_parm(struct file *filp, void *priv, | |
1779 | struct v4l2_streamparm *parm) | |
1780 | { | |
1781 | struct gspca_dev *gspca_dev = priv; | |
1782 | ||
63eb9546 | 1783 | parm->parm.capture.readbuffers = gspca_dev->nbufread; |
627a5ef7 JP |
1784 | |
1785 | if (gspca_dev->sd_desc->get_streamparm) { | |
1786 | int ret; | |
1787 | ||
1788 | if (mutex_lock_interruptible(&gspca_dev->usb_lock)) | |
1789 | return -ERESTARTSYS; | |
668f44a6 JFM |
1790 | if (gspca_dev->present) { |
1791 | gspca_dev->usb_err = 0; | |
1792 | gspca_dev->sd_desc->get_streamparm(gspca_dev, parm); | |
1793 | ret = gspca_dev->usb_err; | |
1794 | } else { | |
090264e5 | 1795 | ret = -ENODEV; |
668f44a6 | 1796 | } |
627a5ef7 JP |
1797 | mutex_unlock(&gspca_dev->usb_lock); |
1798 | return ret; | |
1799 | } | |
1800 | ||
63eb9546 JFM |
1801 | return 0; |
1802 | } | |
1803 | ||
1804 | static int vidioc_s_parm(struct file *filp, void *priv, | |
1805 | struct v4l2_streamparm *parm) | |
1806 | { | |
1807 | struct gspca_dev *gspca_dev = priv; | |
1808 | int n; | |
1809 | ||
63eb9546 | 1810 | n = parm->parm.capture.readbuffers; |
f7059eaa | 1811 | if (n == 0 || n >= GSPCA_MAX_FRAMES) |
63eb9546 JFM |
1812 | parm->parm.capture.readbuffers = gspca_dev->nbufread; |
1813 | else | |
1814 | gspca_dev->nbufread = n; | |
627a5ef7 JP |
1815 | |
1816 | if (gspca_dev->sd_desc->set_streamparm) { | |
1817 | int ret; | |
1818 | ||
1819 | if (mutex_lock_interruptible(&gspca_dev->usb_lock)) | |
1820 | return -ERESTARTSYS; | |
668f44a6 JFM |
1821 | if (gspca_dev->present) { |
1822 | gspca_dev->usb_err = 0; | |
1823 | gspca_dev->sd_desc->set_streamparm(gspca_dev, parm); | |
1824 | ret = gspca_dev->usb_err; | |
1825 | } else { | |
090264e5 | 1826 | ret = -ENODEV; |
668f44a6 | 1827 | } |
627a5ef7 JP |
1828 | mutex_unlock(&gspca_dev->usb_lock); |
1829 | return ret; | |
1830 | } | |
1831 | ||
63eb9546 JFM |
1832 | return 0; |
1833 | } | |
1834 | ||
63eb9546 JFM |
1835 | static int dev_mmap(struct file *file, struct vm_area_struct *vma) |
1836 | { | |
1837 | struct gspca_dev *gspca_dev = file->private_data; | |
efab8211 | 1838 | struct gspca_frame *frame; |
63eb9546 JFM |
1839 | struct page *page; |
1840 | unsigned long addr, start, size; | |
1841 | int i, ret; | |
63eb9546 JFM |
1842 | |
1843 | start = vma->vm_start; | |
1844 | size = vma->vm_end - vma->vm_start; | |
1845 | PDEBUG(D_STREAM, "mmap start:%08x size:%d", (int) start, (int) size); | |
1846 | ||
e2997a72 HG |
1847 | if (mutex_lock_interruptible(&gspca_dev->queue_lock)) |
1848 | return -ERESTARTSYS; | |
63eb9546 JFM |
1849 | if (!gspca_dev->present) { |
1850 | ret = -ENODEV; | |
4aa0d037 JFM |
1851 | goto out; |
1852 | } | |
1853 | if (gspca_dev->capt_file != file) { | |
1854 | ret = -EINVAL; | |
1855 | goto out; | |
63eb9546 JFM |
1856 | } |
1857 | ||
efab8211 | 1858 | frame = NULL; |
63eb9546 JFM |
1859 | for (i = 0; i < gspca_dev->nframes; ++i) { |
1860 | if (gspca_dev->frame[i].v4l2_buf.memory != V4L2_MEMORY_MMAP) { | |
1861 | PDEBUG(D_STREAM, "mmap bad memory type"); | |
1862 | break; | |
1863 | } | |
1864 | if ((gspca_dev->frame[i].v4l2_buf.m.offset >> PAGE_SHIFT) | |
1865 | == vma->vm_pgoff) { | |
1866 | frame = &gspca_dev->frame[i]; | |
1867 | break; | |
1868 | } | |
1869 | } | |
efab8211 | 1870 | if (frame == NULL) { |
63eb9546 JFM |
1871 | PDEBUG(D_STREAM, "mmap no frame buffer found"); |
1872 | ret = -EINVAL; | |
4aa0d037 | 1873 | goto out; |
63eb9546 | 1874 | } |
38bff697 | 1875 | if (size != frame->v4l2_buf.length) { |
63eb9546 JFM |
1876 | PDEBUG(D_STREAM, "mmap bad size"); |
1877 | ret = -EINVAL; | |
4aa0d037 | 1878 | goto out; |
63eb9546 JFM |
1879 | } |
1880 | ||
1881 | /* | |
1882 | * - VM_IO marks the area as being a mmaped region for I/O to a | |
1883 | * device. It also prevents the region from being core dumped. | |
1884 | */ | |
1885 | vma->vm_flags |= VM_IO; | |
1886 | ||
1887 | addr = (unsigned long) frame->data; | |
1888 | while (size > 0) { | |
1889 | page = vmalloc_to_page((void *) addr); | |
1890 | ret = vm_insert_page(vma, start, page); | |
1891 | if (ret < 0) | |
4aa0d037 | 1892 | goto out; |
63eb9546 JFM |
1893 | start += PAGE_SIZE; |
1894 | addr += PAGE_SIZE; | |
1895 | size -= PAGE_SIZE; | |
1896 | } | |
1897 | ||
d50e257e | 1898 | vma->vm_ops = &gspca_vm_ops; |
63eb9546 JFM |
1899 | vma->vm_private_data = frame; |
1900 | gspca_vm_open(vma); | |
e2997a72 | 1901 | ret = 0; |
4aa0d037 | 1902 | out: |
63eb9546 JFM |
1903 | mutex_unlock(&gspca_dev->queue_lock); |
1904 | return ret; | |
1905 | } | |
1906 | ||
27074efa HG |
1907 | static int frame_ready_nolock(struct gspca_dev *gspca_dev, struct file *file, |
1908 | enum v4l2_memory memory) | |
1909 | { | |
1910 | if (!gspca_dev->present) | |
1911 | return -ENODEV; | |
1912 | if (gspca_dev->capt_file != file || gspca_dev->memory != memory || | |
1913 | !gspca_dev->streaming) | |
1914 | return -EINVAL; | |
1915 | ||
1916 | /* check if a frame is ready */ | |
1917 | return gspca_dev->fr_o != atomic_read(&gspca_dev->fr_i); | |
1918 | } | |
1919 | ||
1920 | static int frame_ready(struct gspca_dev *gspca_dev, struct file *file, | |
1921 | enum v4l2_memory memory) | |
1922 | { | |
1923 | int ret; | |
1924 | ||
1925 | if (mutex_lock_interruptible(&gspca_dev->queue_lock)) | |
1926 | return -ERESTARTSYS; | |
1927 | ret = frame_ready_nolock(gspca_dev, file, memory); | |
1928 | mutex_unlock(&gspca_dev->queue_lock); | |
1929 | return ret; | |
1930 | } | |
1931 | ||
63eb9546 | 1932 | /* |
27074efa | 1933 | * dequeue a video buffer |
63eb9546 | 1934 | * |
27074efa | 1935 | * If nonblock_ing is false, block until a buffer is available. |
63eb9546 | 1936 | */ |
27074efa HG |
1937 | static int vidioc_dqbuf(struct file *file, void *priv, |
1938 | struct v4l2_buffer *v4l2_buf) | |
63eb9546 | 1939 | { |
27074efa HG |
1940 | struct gspca_dev *gspca_dev = priv; |
1941 | struct gspca_frame *frame; | |
1942 | int i, j, ret; | |
63eb9546 | 1943 | |
27074efa HG |
1944 | PDEBUG(D_FRAM, "dqbuf"); |
1945 | ||
1946 | if (mutex_lock_interruptible(&gspca_dev->queue_lock)) | |
1947 | return -ERESTARTSYS; | |
1948 | ||
1949 | for (;;) { | |
1950 | ret = frame_ready_nolock(gspca_dev, file, v4l2_buf->memory); | |
1951 | if (ret < 0) | |
1952 | goto out; | |
1953 | if (ret > 0) | |
1954 | break; | |
1955 | ||
1956 | mutex_unlock(&gspca_dev->queue_lock); | |
1957 | ||
1958 | if (file->f_flags & O_NONBLOCK) | |
181b704f HG |
1959 | return -EAGAIN; |
1960 | ||
1961 | /* wait till a frame is ready */ | |
4aa0d037 | 1962 | ret = wait_event_interruptible_timeout(gspca_dev->wq, |
27074efa | 1963 | frame_ready(gspca_dev, file, v4l2_buf->memory), |
181b704f HG |
1964 | msecs_to_jiffies(3000)); |
1965 | if (ret < 0) | |
1966 | return ret; | |
27074efa | 1967 | if (ret == 0) |
e2997a72 | 1968 | return -EIO; |
27074efa HG |
1969 | |
1970 | if (mutex_lock_interruptible(&gspca_dev->queue_lock)) | |
1971 | return -ERESTARTSYS; | |
63eb9546 | 1972 | } |
181b704f | 1973 | |
27074efa HG |
1974 | i = gspca_dev->fr_o; |
1975 | j = gspca_dev->fr_queue[i]; | |
1976 | frame = &gspca_dev->frame[j]; | |
1977 | ||
f7059eaa | 1978 | gspca_dev->fr_o = (i + 1) % GSPCA_MAX_FRAMES; |
e2997a72 | 1979 | |
739570bb JFM |
1980 | if (gspca_dev->sd_desc->dq_callback) { |
1981 | mutex_lock(&gspca_dev->usb_lock); | |
8c4ebae4 | 1982 | gspca_dev->usb_err = 0; |
090264e5 JFM |
1983 | if (gspca_dev->present) |
1984 | gspca_dev->sd_desc->dq_callback(gspca_dev); | |
739570bb JFM |
1985 | mutex_unlock(&gspca_dev->usb_lock); |
1986 | } | |
5b77ae77 | 1987 | |
4a82bc60 HG |
1988 | frame->v4l2_buf.flags &= ~V4L2_BUF_FLAG_DONE; |
1989 | memcpy(v4l2_buf, &frame->v4l2_buf, sizeof *v4l2_buf); | |
1990 | PDEBUG(D_FRAM, "dqbuf %d", j); | |
1991 | ret = 0; | |
1992 | ||
ac0d6df6 | 1993 | if (gspca_dev->memory == V4L2_MEMORY_USERPTR) { |
c6eb8eaf | 1994 | if (copy_to_user((__u8 __user *) frame->v4l2_buf.m.userptr, |
ac0d6df6 JFM |
1995 | frame->data, |
1996 | frame->v4l2_buf.bytesused)) { | |
1997 | PDEBUG(D_ERR|D_STREAM, | |
1998 | "dqbuf cp to user failed"); | |
1999 | ret = -EFAULT; | |
ac0d6df6 JFM |
2000 | } |
2001 | } | |
4aa0d037 | 2002 | out: |
27074efa | 2003 | mutex_unlock(&gspca_dev->queue_lock); |
63eb9546 JFM |
2004 | return ret; |
2005 | } | |
2006 | ||
2007 | /* | |
2008 | * queue a video buffer | |
2009 | * | |
2010 | * Attempting to queue a buffer that has already been | |
2011 | * queued will return -EINVAL. | |
2012 | */ | |
2013 | static int vidioc_qbuf(struct file *file, void *priv, | |
2014 | struct v4l2_buffer *v4l2_buf) | |
2015 | { | |
2016 | struct gspca_dev *gspca_dev = priv; | |
2017 | struct gspca_frame *frame; | |
2018 | int i, index, ret; | |
2019 | ||
2020 | PDEBUG(D_FRAM, "qbuf %d", v4l2_buf->index); | |
63eb9546 | 2021 | |
5b77ae77 JFM |
2022 | if (mutex_lock_interruptible(&gspca_dev->queue_lock)) |
2023 | return -ERESTARTSYS; | |
2024 | ||
63eb9546 JFM |
2025 | index = v4l2_buf->index; |
2026 | if ((unsigned) index >= gspca_dev->nframes) { | |
d43fa32f | 2027 | PDEBUG(D_FRAM, |
63eb9546 | 2028 | "qbuf idx %d >= %d", index, gspca_dev->nframes); |
5b77ae77 JFM |
2029 | ret = -EINVAL; |
2030 | goto out; | |
63eb9546 | 2031 | } |
5b77ae77 | 2032 | if (v4l2_buf->memory != gspca_dev->memory) { |
d43fa32f | 2033 | PDEBUG(D_FRAM, "qbuf bad memory type"); |
5b77ae77 JFM |
2034 | ret = -EINVAL; |
2035 | goto out; | |
63eb9546 | 2036 | } |
e2997a72 | 2037 | |
5b77ae77 | 2038 | frame = &gspca_dev->frame[index]; |
d43fa32f JFM |
2039 | if (frame->v4l2_buf.flags & BUF_ALL_FLAGS) { |
2040 | PDEBUG(D_FRAM, "qbuf bad state"); | |
63eb9546 JFM |
2041 | ret = -EINVAL; |
2042 | goto out; | |
2043 | } | |
2044 | ||
2045 | frame->v4l2_buf.flags |= V4L2_BUF_FLAG_QUEUED; | |
63eb9546 | 2046 | |
d43fa32f | 2047 | if (frame->v4l2_buf.memory == V4L2_MEMORY_USERPTR) { |
63eb9546 JFM |
2048 | frame->v4l2_buf.m.userptr = v4l2_buf->m.userptr; |
2049 | frame->v4l2_buf.length = v4l2_buf->length; | |
2050 | } | |
2051 | ||
2052 | /* put the buffer in the 'queued' queue */ | |
f7059eaa | 2053 | i = atomic_read(&gspca_dev->fr_q); |
63eb9546 | 2054 | gspca_dev->fr_queue[i] = index; |
f7059eaa | 2055 | atomic_set(&gspca_dev->fr_q, (i + 1) % GSPCA_MAX_FRAMES); |
63eb9546 JFM |
2056 | |
2057 | v4l2_buf->flags |= V4L2_BUF_FLAG_QUEUED; | |
2058 | v4l2_buf->flags &= ~V4L2_BUF_FLAG_DONE; | |
2059 | ret = 0; | |
2060 | out: | |
2061 | mutex_unlock(&gspca_dev->queue_lock); | |
2062 | return ret; | |
2063 | } | |
2064 | ||
d43fa32f JFM |
2065 | /* |
2066 | * allocate the resources for read() | |
2067 | */ | |
2068 | static int read_alloc(struct gspca_dev *gspca_dev, | |
2069 | struct file *file) | |
63eb9546 | 2070 | { |
63eb9546 | 2071 | struct v4l2_buffer v4l2_buf; |
d43fa32f | 2072 | int i, ret; |
63eb9546 | 2073 | |
d43fa32f | 2074 | PDEBUG(D_STREAM, "read alloc"); |
63eb9546 JFM |
2075 | if (gspca_dev->nframes == 0) { |
2076 | struct v4l2_requestbuffers rb; | |
2077 | ||
2078 | memset(&rb, 0, sizeof rb); | |
2079 | rb.count = gspca_dev->nbufread; | |
2080 | rb.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; | |
ac0d6df6 | 2081 | rb.memory = GSPCA_MEMORY_READ; |
63eb9546 JFM |
2082 | ret = vidioc_reqbufs(file, gspca_dev, &rb); |
2083 | if (ret != 0) { | |
d43fa32f | 2084 | PDEBUG(D_STREAM, "read reqbuf err %d", ret); |
63eb9546 JFM |
2085 | return ret; |
2086 | } | |
2087 | memset(&v4l2_buf, 0, sizeof v4l2_buf); | |
2088 | v4l2_buf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; | |
ac0d6df6 | 2089 | v4l2_buf.memory = GSPCA_MEMORY_READ; |
63eb9546 JFM |
2090 | for (i = 0; i < gspca_dev->nbufread; i++) { |
2091 | v4l2_buf.index = i; | |
63eb9546 JFM |
2092 | ret = vidioc_qbuf(file, gspca_dev, &v4l2_buf); |
2093 | if (ret != 0) { | |
2094 | PDEBUG(D_STREAM, "read qbuf err: %d", ret); | |
2095 | return ret; | |
2096 | } | |
2097 | } | |
d43fa32f JFM |
2098 | gspca_dev->memory = GSPCA_MEMORY_READ; |
2099 | } | |
4aa0d037 | 2100 | |
d43fa32f JFM |
2101 | /* start streaming */ |
2102 | ret = vidioc_streamon(file, gspca_dev, V4L2_BUF_TYPE_VIDEO_CAPTURE); | |
2103 | if (ret != 0) | |
2104 | PDEBUG(D_STREAM, "read streamon err %d", ret); | |
2105 | return ret; | |
2106 | } | |
2107 | ||
2108 | static unsigned int dev_poll(struct file *file, poll_table *wait) | |
2109 | { | |
2110 | struct gspca_dev *gspca_dev = file->private_data; | |
f7059eaa | 2111 | int ret; |
d43fa32f JFM |
2112 | |
2113 | PDEBUG(D_FRAM, "poll"); | |
2114 | ||
2115 | poll_wait(file, &gspca_dev->wq, wait); | |
d43fa32f | 2116 | |
5b77ae77 | 2117 | /* if reqbufs is not done, the user would use read() */ |
ee362991 | 2118 | if (gspca_dev->memory == GSPCA_MEMORY_NO) { |
d43fa32f | 2119 | ret = read_alloc(gspca_dev, file); |
5b77ae77 JFM |
2120 | if (ret != 0) |
2121 | return POLLERR; | |
63eb9546 JFM |
2122 | } |
2123 | ||
d43fa32f JFM |
2124 | if (mutex_lock_interruptible(&gspca_dev->queue_lock) != 0) |
2125 | return POLLERR; | |
d43fa32f | 2126 | |
f7059eaa JFM |
2127 | /* check if an image has been received */ |
2128 | if (gspca_dev->fr_o != atomic_read(&gspca_dev->fr_i)) | |
2129 | ret = POLLIN | POLLRDNORM; /* yes */ | |
d43fa32f JFM |
2130 | else |
2131 | ret = 0; | |
d43fa32f | 2132 | mutex_unlock(&gspca_dev->queue_lock); |
090264e5 JFM |
2133 | if (!gspca_dev->present) |
2134 | return POLLHUP; | |
d43fa32f JFM |
2135 | return ret; |
2136 | } | |
2137 | ||
2138 | static ssize_t dev_read(struct file *file, char __user *data, | |
2139 | size_t count, loff_t *ppos) | |
2140 | { | |
2141 | struct gspca_dev *gspca_dev = file->private_data; | |
2142 | struct gspca_frame *frame; | |
2143 | struct v4l2_buffer v4l2_buf; | |
2144 | struct timeval timestamp; | |
82643d0e | 2145 | int n, ret, ret2; |
d43fa32f | 2146 | |
a9e11134 | 2147 | PDEBUG(D_FRAM, "read (%zd)", count); |
d43fa32f JFM |
2148 | if (!gspca_dev->present) |
2149 | return -ENODEV; | |
ee362991 | 2150 | if (gspca_dev->memory == GSPCA_MEMORY_NO) { /* first time ? */ |
d43fa32f JFM |
2151 | ret = read_alloc(gspca_dev, file); |
2152 | if (ret != 0) | |
2153 | return ret; | |
d43fa32f JFM |
2154 | } |
2155 | ||
63eb9546 | 2156 | /* get a frame */ |
2f51d00f | 2157 | timestamp = ktime_to_timeval(ktime_get()); |
63eb9546 | 2158 | timestamp.tv_sec--; |
82643d0e JFM |
2159 | n = 2; |
2160 | for (;;) { | |
63eb9546 JFM |
2161 | memset(&v4l2_buf, 0, sizeof v4l2_buf); |
2162 | v4l2_buf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; | |
ac0d6df6 | 2163 | v4l2_buf.memory = GSPCA_MEMORY_READ; |
63eb9546 JFM |
2164 | ret = vidioc_dqbuf(file, gspca_dev, &v4l2_buf); |
2165 | if (ret != 0) { | |
2166 | PDEBUG(D_STREAM, "read dqbuf err %d", ret); | |
2167 | return ret; | |
2168 | } | |
2169 | ||
2170 | /* if the process slept for more than 1 second, | |
219423c1 | 2171 | * get a newer frame */ |
63eb9546 | 2172 | frame = &gspca_dev->frame[v4l2_buf.index]; |
82643d0e JFM |
2173 | if (--n < 0) |
2174 | break; /* avoid infinite loop */ | |
63eb9546 JFM |
2175 | if (frame->v4l2_buf.timestamp.tv_sec >= timestamp.tv_sec) |
2176 | break; | |
2177 | ret = vidioc_qbuf(file, gspca_dev, &v4l2_buf); | |
2178 | if (ret != 0) { | |
2179 | PDEBUG(D_STREAM, "read qbuf err %d", ret); | |
2180 | return ret; | |
2181 | } | |
2182 | } | |
2183 | ||
2184 | /* copy the frame */ | |
ac0d6df6 JFM |
2185 | if (count > frame->v4l2_buf.bytesused) |
2186 | count = frame->v4l2_buf.bytesused; | |
63eb9546 JFM |
2187 | ret = copy_to_user(data, frame->data, count); |
2188 | if (ret != 0) { | |
2189 | PDEBUG(D_ERR|D_STREAM, | |
a9e11134 | 2190 | "read cp to user lack %d / %zd", ret, count); |
63eb9546 JFM |
2191 | ret = -EFAULT; |
2192 | goto out; | |
2193 | } | |
2194 | ret = count; | |
2195 | out: | |
2196 | /* in each case, requeue the buffer */ | |
2197 | ret2 = vidioc_qbuf(file, gspca_dev, &v4l2_buf); | |
2198 | if (ret2 != 0) | |
2199 | return ret2; | |
2200 | return ret; | |
2201 | } | |
2202 | ||
bec43661 | 2203 | static struct v4l2_file_operations dev_fops = { |
63eb9546 JFM |
2204 | .owner = THIS_MODULE, |
2205 | .open = dev_open, | |
2206 | .release = dev_close, | |
2207 | .read = dev_read, | |
2208 | .mmap = dev_mmap, | |
bec43661 | 2209 | .unlocked_ioctl = video_ioctl2, |
63eb9546 JFM |
2210 | .poll = dev_poll, |
2211 | }; | |
2212 | ||
a399810c | 2213 | static const struct v4l2_ioctl_ops dev_ioctl_ops = { |
63eb9546 JFM |
2214 | .vidioc_querycap = vidioc_querycap, |
2215 | .vidioc_dqbuf = vidioc_dqbuf, | |
2216 | .vidioc_qbuf = vidioc_qbuf, | |
e078770a MCC |
2217 | .vidioc_enum_fmt_vid_cap = vidioc_enum_fmt_vid_cap, |
2218 | .vidioc_try_fmt_vid_cap = vidioc_try_fmt_vid_cap, | |
2219 | .vidioc_g_fmt_vid_cap = vidioc_g_fmt_vid_cap, | |
2220 | .vidioc_s_fmt_vid_cap = vidioc_s_fmt_vid_cap, | |
63eb9546 JFM |
2221 | .vidioc_streamon = vidioc_streamon, |
2222 | .vidioc_queryctrl = vidioc_queryctrl, | |
2223 | .vidioc_g_ctrl = vidioc_g_ctrl, | |
2224 | .vidioc_s_ctrl = vidioc_s_ctrl, | |
2225 | .vidioc_querymenu = vidioc_querymenu, | |
2226 | .vidioc_enum_input = vidioc_enum_input, | |
2227 | .vidioc_g_input = vidioc_g_input, | |
2228 | .vidioc_s_input = vidioc_s_input, | |
2229 | .vidioc_reqbufs = vidioc_reqbufs, | |
2230 | .vidioc_querybuf = vidioc_querybuf, | |
2231 | .vidioc_streamoff = vidioc_streamoff, | |
2232 | .vidioc_g_jpegcomp = vidioc_g_jpegcomp, | |
2233 | .vidioc_s_jpegcomp = vidioc_s_jpegcomp, | |
2234 | .vidioc_g_parm = vidioc_g_parm, | |
2235 | .vidioc_s_parm = vidioc_s_parm, | |
11c635a2 | 2236 | .vidioc_enum_framesizes = vidioc_enum_framesizes, |
28ffe77f | 2237 | .vidioc_enum_frameintervals = vidioc_enum_frameintervals, |
af1d9afa BJ |
2238 | #ifdef CONFIG_VIDEO_ADV_DEBUG |
2239 | .vidioc_g_register = vidioc_g_register, | |
2240 | .vidioc_s_register = vidioc_s_register, | |
2241 | #endif | |
2242 | .vidioc_g_chip_ident = vidioc_g_chip_ident, | |
63eb9546 JFM |
2243 | }; |
2244 | ||
59929cef | 2245 | static const struct video_device gspca_template = { |
a399810c | 2246 | .name = "gspca main driver", |
a399810c HV |
2247 | .fops = &dev_fops, |
2248 | .ioctl_ops = &dev_ioctl_ops, | |
d0182306 | 2249 | .release = gspca_release, |
a399810c HV |
2250 | }; |
2251 | ||
6a33091f JFM |
2252 | /* initialize the controls */ |
2253 | static void ctrls_init(struct gspca_dev *gspca_dev) | |
2254 | { | |
2255 | struct gspca_ctrl *ctrl; | |
2256 | int i; | |
2257 | ||
2258 | for (i = 0, ctrl = gspca_dev->cam.ctrls; | |
2259 | i < gspca_dev->sd_desc->nctrls; | |
2260 | i++, ctrl++) { | |
2261 | ctrl->def = gspca_dev->sd_desc->ctrls[i].qctrl.default_value; | |
2262 | ctrl->val = ctrl->def; | |
2263 | ctrl->min = gspca_dev->sd_desc->ctrls[i].qctrl.minimum; | |
2264 | ctrl->max = gspca_dev->sd_desc->ctrls[i].qctrl.maximum; | |
2265 | } | |
2266 | } | |
2267 | ||
63eb9546 JFM |
2268 | /* |
2269 | * probe and create a new gspca device | |
2270 | * | |
2271 | * This function must be called by the sub-driver when it is | |
2272 | * called for probing a new device. | |
2273 | */ | |
4462864d | 2274 | int gspca_dev_probe2(struct usb_interface *intf, |
63eb9546 JFM |
2275 | const struct usb_device_id *id, |
2276 | const struct sd_desc *sd_desc, | |
d43fa32f JFM |
2277 | int dev_size, |
2278 | struct module *module) | |
63eb9546 | 2279 | { |
63eb9546 JFM |
2280 | struct gspca_dev *gspca_dev; |
2281 | struct usb_device *dev = interface_to_usbdev(intf); | |
2282 | int ret; | |
63eb9546 | 2283 | |
ee7dd4e0 JFM |
2284 | pr_info("%s-" GSPCA_VERSION " probing %04x:%04x\n", |
2285 | sd_desc->name, id->idVendor, id->idProduct); | |
63eb9546 | 2286 | |
63eb9546 JFM |
2287 | /* create the device */ |
2288 | if (dev_size < sizeof *gspca_dev) | |
2289 | dev_size = sizeof *gspca_dev; | |
2290 | gspca_dev = kzalloc(dev_size, GFP_KERNEL); | |
e293e599 | 2291 | if (!gspca_dev) { |
133a9fe9 | 2292 | pr_err("couldn't kzalloc gspca struct\n"); |
e293e599 | 2293 | return -ENOMEM; |
63eb9546 | 2294 | } |
8295d99e JFM |
2295 | gspca_dev->usb_buf = kmalloc(USB_BUF_SZ, GFP_KERNEL); |
2296 | if (!gspca_dev->usb_buf) { | |
133a9fe9 | 2297 | pr_err("out of memory\n"); |
e293e599 | 2298 | ret = -ENOMEM; |
8295d99e JFM |
2299 | goto out; |
2300 | } | |
63eb9546 | 2301 | gspca_dev->dev = dev; |
4462864d | 2302 | gspca_dev->iface = intf->cur_altsetting->desc.bInterfaceNumber; |
d43fa32f | 2303 | gspca_dev->nbalt = intf->num_altsetting; |
35680baa JFM |
2304 | |
2305 | /* check if any audio device */ | |
2306 | if (dev->config->desc.bNumInterfaces != 1) { | |
2307 | int i; | |
2308 | struct usb_interface *intf2; | |
2309 | ||
2310 | for (i = 0; i < dev->config->desc.bNumInterfaces; i++) { | |
2311 | intf2 = dev->config->interface[i]; | |
2312 | if (intf2 != NULL | |
2313 | && intf2->altsetting != NULL | |
2314 | && intf2->altsetting->desc.bInterfaceClass == | |
2315 | USB_CLASS_AUDIO) { | |
2316 | gspca_dev->audio = 1; | |
2317 | break; | |
2318 | } | |
2319 | } | |
2320 | } | |
2321 | ||
63eb9546 | 2322 | gspca_dev->sd_desc = sd_desc; |
63eb9546 | 2323 | gspca_dev->nbufread = 2; |
ff374747 | 2324 | gspca_dev->empty_packet = -1; /* don't check the empty packets */ |
63eb9546 | 2325 | |
012d6b02 | 2326 | /* configure the subdriver and initialize the USB device */ |
ba38ee8e | 2327 | ret = sd_desc->config(gspca_dev, id); |
012d6b02 JFM |
2328 | if (ret < 0) |
2329 | goto out; | |
6a33091f JFM |
2330 | if (gspca_dev->cam.ctrls != NULL) |
2331 | ctrls_init(gspca_dev); | |
ba38ee8e | 2332 | ret = sd_desc->init(gspca_dev); |
63eb9546 JFM |
2333 | if (ret < 0) |
2334 | goto out; | |
2335 | gspca_set_default_mode(gspca_dev); | |
2336 | ||
10ee2402 HG |
2337 | ret = gspca_input_connect(gspca_dev); |
2338 | if (ret) | |
2339 | goto out; | |
2340 | ||
63eb9546 | 2341 | mutex_init(&gspca_dev->usb_lock); |
63eb9546 JFM |
2342 | mutex_init(&gspca_dev->queue_lock); |
2343 | init_waitqueue_head(&gspca_dev->wq); | |
2344 | ||
2345 | /* init video stuff */ | |
ba38ee8e | 2346 | memcpy(&gspca_dev->vdev, &gspca_template, sizeof gspca_template); |
24441631 | 2347 | gspca_dev->vdev.parent = &intf->dev; |
5c4fa002 | 2348 | gspca_dev->module = module; |
ee56a4d3 | 2349 | gspca_dev->present = 1; |
a12ca6a6 | 2350 | ret = video_register_device(&gspca_dev->vdev, |
63eb9546 | 2351 | VFL_TYPE_GRABBER, |
8d584a53 | 2352 | -1); |
63eb9546 | 2353 | if (ret < 0) { |
133a9fe9 | 2354 | pr_err("video_register_device err %d\n", ret); |
63eb9546 JFM |
2355 | goto out; |
2356 | } | |
2357 | ||
63eb9546 | 2358 | usb_set_intfdata(intf, gspca_dev); |
38c7c036 | 2359 | PDEBUG(D_PROBE, "%s created", video_device_node_name(&gspca_dev->vdev)); |
0274d42e | 2360 | |
10ee2402 | 2361 | gspca_input_create_urb(gspca_dev); |
0274d42e | 2362 | |
63eb9546 JFM |
2363 | return 0; |
2364 | out: | |
f7628015 | 2365 | #if defined(CONFIG_INPUT) || defined(CONFIG_INPUT_MODULE) |
10ee2402 HG |
2366 | if (gspca_dev->input_dev) |
2367 | input_unregister_device(gspca_dev->input_dev); | |
e7637521 | 2368 | #endif |
e07a1d8a JFM |
2369 | kfree(gspca_dev->usb_buf); |
2370 | kfree(gspca_dev); | |
63eb9546 JFM |
2371 | return ret; |
2372 | } | |
4462864d JFM |
2373 | EXPORT_SYMBOL(gspca_dev_probe2); |
2374 | ||
2375 | /* same function as the previous one, but check the interface */ | |
2376 | int gspca_dev_probe(struct usb_interface *intf, | |
2377 | const struct usb_device_id *id, | |
2378 | const struct sd_desc *sd_desc, | |
2379 | int dev_size, | |
2380 | struct module *module) | |
2381 | { | |
2382 | struct usb_device *dev = interface_to_usbdev(intf); | |
2383 | ||
2384 | /* we don't handle multi-config cameras */ | |
2385 | if (dev->descriptor.bNumConfigurations != 1) { | |
133a9fe9 JP |
2386 | pr_err("%04x:%04x too many config\n", |
2387 | id->idVendor, id->idProduct); | |
4462864d JFM |
2388 | return -ENODEV; |
2389 | } | |
2390 | ||
2391 | /* the USB video interface must be the first one */ | |
2392 | if (dev->config->desc.bNumInterfaces != 1 | |
c4dc692c | 2393 | && intf->cur_altsetting->desc.bInterfaceNumber != 0) |
4462864d | 2394 | return -ENODEV; |
4462864d JFM |
2395 | |
2396 | return gspca_dev_probe2(intf, id, sd_desc, dev_size, module); | |
2397 | } | |
63eb9546 JFM |
2398 | EXPORT_SYMBOL(gspca_dev_probe); |
2399 | ||
2400 | /* | |
2401 | * USB disconnection | |
2402 | * | |
2403 | * This function must be called by the sub-driver | |
2404 | * when the device disconnects, after the specific resources are freed. | |
2405 | */ | |
2406 | void gspca_disconnect(struct usb_interface *intf) | |
2407 | { | |
4aa0d037 | 2408 | struct gspca_dev *gspca_dev = usb_get_intfdata(intf); |
f7628015 | 2409 | #if defined(CONFIG_INPUT) || defined(CONFIG_INPUT_MODULE) |
0274d42e | 2410 | struct input_dev *input_dev; |
e070bf9e | 2411 | #endif |
63eb9546 | 2412 | |
38c7c036 LP |
2413 | PDEBUG(D_PROBE, "%s disconnect", |
2414 | video_device_node_name(&gspca_dev->vdev)); | |
ad28127d | 2415 | mutex_lock(&gspca_dev->usb_lock); |
4e770f76 | 2416 | |
6e4ae872 | 2417 | gspca_dev->present = 0; |
4e770f76 | 2418 | wake_up_interruptible(&gspca_dev->wq); |
6e4ae872 | 2419 | |
4e770f76 | 2420 | destroy_urbs(gspca_dev); |
090264e5 | 2421 | |
f7628015 | 2422 | #if defined(CONFIG_INPUT) || defined(CONFIG_INPUT_MODULE) |
0274d42e MN |
2423 | gspca_input_destroy_urb(gspca_dev); |
2424 | input_dev = gspca_dev->input_dev; | |
2425 | if (input_dev) { | |
2426 | gspca_dev->input_dev = NULL; | |
2427 | input_unregister_device(input_dev); | |
2428 | } | |
e070bf9e | 2429 | #endif |
0274d42e | 2430 | |
090264e5 | 2431 | /* the device is freed at exit of this function */ |
ad28127d | 2432 | gspca_dev->dev = NULL; |
090264e5 JFM |
2433 | mutex_unlock(&gspca_dev->usb_lock); |
2434 | ||
6b060ffe FZ |
2435 | usb_set_intfdata(intf, NULL); |
2436 | ||
a12ca6a6 | 2437 | /* release the device */ |
25985edc | 2438 | /* (this will call gspca_release() immediately or on last close) */ |
a12ca6a6 | 2439 | video_unregister_device(&gspca_dev->vdev); |
3145b8c1 | 2440 | |
0d07e240 | 2441 | /* PDEBUG(D_PROBE, "disconnect complete"); */ |
63eb9546 JFM |
2442 | } |
2443 | EXPORT_SYMBOL(gspca_disconnect); | |
2444 | ||
6a709749 JFM |
2445 | #ifdef CONFIG_PM |
2446 | int gspca_suspend(struct usb_interface *intf, pm_message_t message) | |
2447 | { | |
2448 | struct gspca_dev *gspca_dev = usb_get_intfdata(intf); | |
2449 | ||
2450 | if (!gspca_dev->streaming) | |
2451 | return 0; | |
2452 | gspca_dev->frozen = 1; /* avoid urb error messages */ | |
012d6b02 JFM |
2453 | if (gspca_dev->sd_desc->stopN) |
2454 | gspca_dev->sd_desc->stopN(gspca_dev); | |
6a709749 | 2455 | destroy_urbs(gspca_dev); |
0274d42e | 2456 | gspca_input_destroy_urb(gspca_dev); |
6a709749 | 2457 | gspca_set_alt0(gspca_dev); |
012d6b02 JFM |
2458 | if (gspca_dev->sd_desc->stop0) |
2459 | gspca_dev->sd_desc->stop0(gspca_dev); | |
6a709749 JFM |
2460 | return 0; |
2461 | } | |
2462 | EXPORT_SYMBOL(gspca_suspend); | |
2463 | ||
2464 | int gspca_resume(struct usb_interface *intf) | |
2465 | { | |
2466 | struct gspca_dev *gspca_dev = usb_get_intfdata(intf); | |
2467 | ||
2468 | gspca_dev->frozen = 0; | |
012d6b02 | 2469 | gspca_dev->sd_desc->init(gspca_dev); |
0274d42e | 2470 | gspca_input_create_urb(gspca_dev); |
012d6b02 JFM |
2471 | if (gspca_dev->streaming) |
2472 | return gspca_init_transfer(gspca_dev); | |
1e89e2da | 2473 | return 0; |
6a709749 JFM |
2474 | } |
2475 | EXPORT_SYMBOL(gspca_resume); | |
2476 | #endif | |
dcef3237 HG |
2477 | /* -- cam driver utility functions -- */ |
2478 | ||
2479 | /* auto gain and exposure algorithm based on the knee algorithm described here: | |
2480 | http://ytse.tricolour.net/docs/LowLightOptimization.html | |
2481 | ||
2482 | Returns 0 if no changes were made, 1 if the gain and or exposure settings | |
2483 | where changed. */ | |
2484 | int gspca_auto_gain_n_exposure(struct gspca_dev *gspca_dev, int avg_lum, | |
2485 | int desired_avg_lum, int deadzone, int gain_knee, int exposure_knee) | |
2486 | { | |
2487 | int i, steps, gain, orig_gain, exposure, orig_exposure, autogain; | |
2488 | const struct ctrl *gain_ctrl = NULL; | |
2489 | const struct ctrl *exposure_ctrl = NULL; | |
2490 | const struct ctrl *autogain_ctrl = NULL; | |
2491 | int retval = 0; | |
2492 | ||
2493 | for (i = 0; i < gspca_dev->sd_desc->nctrls; i++) { | |
26984b09 HG |
2494 | if (gspca_dev->ctrl_dis & (1 << i)) |
2495 | continue; | |
dcef3237 HG |
2496 | if (gspca_dev->sd_desc->ctrls[i].qctrl.id == V4L2_CID_GAIN) |
2497 | gain_ctrl = &gspca_dev->sd_desc->ctrls[i]; | |
2498 | if (gspca_dev->sd_desc->ctrls[i].qctrl.id == V4L2_CID_EXPOSURE) | |
2499 | exposure_ctrl = &gspca_dev->sd_desc->ctrls[i]; | |
2500 | if (gspca_dev->sd_desc->ctrls[i].qctrl.id == V4L2_CID_AUTOGAIN) | |
2501 | autogain_ctrl = &gspca_dev->sd_desc->ctrls[i]; | |
2502 | } | |
2503 | if (!gain_ctrl || !exposure_ctrl || !autogain_ctrl) { | |
2504 | PDEBUG(D_ERR, "Error: gspca_auto_gain_n_exposure called " | |
2505 | "on cam without (auto)gain/exposure"); | |
2506 | return 0; | |
2507 | } | |
2508 | ||
2509 | if (gain_ctrl->get(gspca_dev, &gain) || | |
2510 | exposure_ctrl->get(gspca_dev, &exposure) || | |
2511 | autogain_ctrl->get(gspca_dev, &autogain) || !autogain) | |
2512 | return 0; | |
2513 | ||
2514 | orig_gain = gain; | |
2515 | orig_exposure = exposure; | |
2516 | ||
2517 | /* If we are of a multiple of deadzone, do multiple steps to reach the | |
2518 | desired lumination fast (with the risc of a slight overshoot) */ | |
2519 | steps = abs(desired_avg_lum - avg_lum) / deadzone; | |
2520 | ||
1c44d81d | 2521 | PDEBUG(D_FRAM, "autogain: lum: %d, desired: %d, steps: %d", |
dcef3237 HG |
2522 | avg_lum, desired_avg_lum, steps); |
2523 | ||
2524 | for (i = 0; i < steps; i++) { | |
2525 | if (avg_lum > desired_avg_lum) { | |
2526 | if (gain > gain_knee) | |
2527 | gain--; | |
2528 | else if (exposure > exposure_knee) | |
2529 | exposure--; | |
2530 | else if (gain > gain_ctrl->qctrl.default_value) | |
2531 | gain--; | |
2532 | else if (exposure > exposure_ctrl->qctrl.minimum) | |
2533 | exposure--; | |
2534 | else if (gain > gain_ctrl->qctrl.minimum) | |
2535 | gain--; | |
2536 | else | |
2537 | break; | |
2538 | } else { | |
2539 | if (gain < gain_ctrl->qctrl.default_value) | |
2540 | gain++; | |
2541 | else if (exposure < exposure_knee) | |
2542 | exposure++; | |
2543 | else if (gain < gain_knee) | |
2544 | gain++; | |
2545 | else if (exposure < exposure_ctrl->qctrl.maximum) | |
2546 | exposure++; | |
2547 | else if (gain < gain_ctrl->qctrl.maximum) | |
2548 | gain++; | |
2549 | else | |
2550 | break; | |
2551 | } | |
2552 | } | |
2553 | ||
2554 | if (gain != orig_gain) { | |
2555 | gain_ctrl->set(gspca_dev, gain); | |
2556 | retval = 1; | |
2557 | } | |
2558 | if (exposure != orig_exposure) { | |
2559 | exposure_ctrl->set(gspca_dev, exposure); | |
2560 | retval = 1; | |
2561 | } | |
2562 | ||
2563 | return retval; | |
2564 | } | |
2565 | EXPORT_SYMBOL(gspca_auto_gain_n_exposure); | |
2566 | ||
63eb9546 JFM |
2567 | /* -- module insert / remove -- */ |
2568 | static int __init gspca_init(void) | |
2569 | { | |
f22123fa | 2570 | pr_info("v" GSPCA_VERSION " registered\n"); |
63eb9546 JFM |
2571 | return 0; |
2572 | } | |
2573 | static void __exit gspca_exit(void) | |
2574 | { | |
63eb9546 JFM |
2575 | } |
2576 | ||
2577 | module_init(gspca_init); | |
2578 | module_exit(gspca_exit); | |
2579 | ||
335b3f88 | 2580 | #ifdef GSPCA_DEBUG |
63eb9546 JFM |
2581 | module_param_named(debug, gspca_debug, int, 0644); |
2582 | MODULE_PARM_DESC(debug, | |
2583 | "Debug (bit) 0x01:error 0x02:probe 0x04:config" | |
f8e5677f | 2584 | " 0x08:stream 0x10:frame 0x20:packet" |
d43fa32f | 2585 | " 0x0100: v4l2"); |
6a7eba24 | 2586 | #endif |