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Commit | Line | Data |
---|---|---|
a6c2ba28 | 1 | /* |
f7abcd38 | 2 | em28xx-video.c - driver for Empia EM2800/EM2820/2840 USB video capture devices |
a6c2ba28 | 3 | |
f7abcd38 MCC |
4 | Copyright (C) 2005 Ludovico Cavedon <cavedon@sssup.it> |
5 | Markus Rechberger <mrechberger@gmail.com> | |
2e7c6dc3 | 6 | Mauro Carvalho Chehab <mchehab@infradead.org> |
f7abcd38 | 7 | Sascha Sommer <saschasommer@freenet.de> |
a6c2ba28 | 8 | |
439090d7 MCC |
9 | Some parts based on SN9C10x PC Camera Controllers GPL driver made |
10 | by Luca Risolia <luca.risolia@studio.unibo.it> | |
11 | ||
a6c2ba28 | 12 | This program is free software; you can redistribute it and/or modify |
13 | it under the terms of the GNU General Public License as published by | |
14 | the Free Software Foundation; either version 2 of the License, or | |
15 | (at your option) any later version. | |
16 | ||
17 | This program is distributed in the hope that it will be useful, | |
18 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
19 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
20 | GNU General Public License for more details. | |
21 | ||
22 | You should have received a copy of the GNU General Public License | |
23 | along with this program; if not, write to the Free Software | |
24 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
25 | */ | |
26 | ||
27 | #include <linux/init.h> | |
28 | #include <linux/list.h> | |
29 | #include <linux/module.h> | |
30 | #include <linux/kernel.h> | |
e5589bef | 31 | #include <linux/bitmap.h> |
a6c2ba28 | 32 | #include <linux/usb.h> |
a6c2ba28 | 33 | #include <linux/i2c.h> |
b296fc60 | 34 | #include <linux/version.h> |
6d35c8f6 | 35 | #include <linux/mm.h> |
1e4baed3 | 36 | #include <linux/mutex.h> |
a6c2ba28 | 37 | |
f7abcd38 | 38 | #include "em28xx.h" |
c0477ad9 | 39 | #include <media/v4l2-common.h> |
2474ed44 | 40 | #include <media/msp3400.h> |
ed086314 | 41 | #include <media/tuner.h> |
a6c2ba28 | 42 | |
f7abcd38 MCC |
43 | #define DRIVER_AUTHOR "Ludovico Cavedon <cavedon@sssup.it>, " \ |
44 | "Markus Rechberger <mrechberger@gmail.com>, " \ | |
2e7c6dc3 | 45 | "Mauro Carvalho Chehab <mchehab@infradead.org>, " \ |
f7abcd38 | 46 | "Sascha Sommer <saschasommer@freenet.de>" |
a6c2ba28 | 47 | |
f7abcd38 MCC |
48 | #define DRIVER_NAME "em28xx" |
49 | #define DRIVER_DESC "Empia em28xx based USB video device driver" | |
195a4ef6 | 50 | #define EM28XX_VERSION_CODE KERNEL_VERSION(0, 1, 0) |
a6c2ba28 | 51 | |
3acf2809 | 52 | #define em28xx_videodbg(fmt, arg...) do {\ |
4ac97914 MCC |
53 | if (video_debug) \ |
54 | printk(KERN_INFO "%s %s :"fmt, \ | |
f85c657f | 55 | dev->name, __FUNCTION__ , ##arg); } while (0) |
a6c2ba28 | 56 | |
57 | MODULE_AUTHOR(DRIVER_AUTHOR); | |
58 | MODULE_DESCRIPTION(DRIVER_DESC); | |
59 | MODULE_LICENSE("GPL"); | |
60 | ||
3acf2809 | 61 | static LIST_HEAD(em28xx_devlist); |
9c75541f | 62 | |
9d4d9c05 | 63 | static unsigned int card[] = {[0 ... (EM28XX_MAXBOARDS - 1)] = UNSET }; |
e5589bef | 64 | static unsigned int video_nr[] = {[0 ... (EM28XX_MAXBOARDS - 1)] = UNSET }; |
0be43754 MCC |
65 | static unsigned int vbi_nr[] = {[0 ... (EM28XX_MAXBOARDS - 1)] = UNSET }; |
66 | static unsigned int radio_nr[] = {[0 ... (EM28XX_MAXBOARDS - 1)] = UNSET }; | |
67 | ||
596d92d5 | 68 | module_param_array(card, int, NULL, 0444); |
e5589bef MCC |
69 | module_param_array(video_nr, int, NULL, 0444); |
70 | module_param_array(vbi_nr, int, NULL, 0444); | |
0be43754 MCC |
71 | module_param_array(radio_nr, int, NULL, 0444); |
72 | MODULE_PARM_DESC(card, "card type"); | |
73 | MODULE_PARM_DESC(video_nr, "video device numbers"); | |
74 | MODULE_PARM_DESC(vbi_nr, "vbi device numbers"); | |
75 | MODULE_PARM_DESC(radio_nr, "radio device numbers"); | |
596d92d5 | 76 | |
a6c2ba28 | 77 | static unsigned int video_debug = 0; |
78 | module_param(video_debug,int,0644); | |
79 | MODULE_PARM_DESC(video_debug,"enable debug messages [video]"); | |
80 | ||
e5589bef MCC |
81 | /* Bitmask marking allocated devices from 0 to EM28XX_MAXBOARDS */ |
82 | static unsigned long em28xx_devused; | |
83 | ||
a6c2ba28 | 84 | /* supported controls */ |
c0477ad9 | 85 | /* Common to all boards */ |
3acf2809 | 86 | static struct v4l2_queryctrl em28xx_qctrl[] = { |
c0477ad9 MCC |
87 | { |
88 | .id = V4L2_CID_AUDIO_VOLUME, | |
89 | .type = V4L2_CTRL_TYPE_INTEGER, | |
90 | .name = "Volume", | |
91 | .minimum = 0x0, | |
92 | .maximum = 0x1f, | |
93 | .step = 0x1, | |
94 | .default_value = 0x1f, | |
95 | .flags = 0, | |
96 | },{ | |
97 | .id = V4L2_CID_AUDIO_MUTE, | |
98 | .type = V4L2_CTRL_TYPE_BOOLEAN, | |
99 | .name = "Mute", | |
100 | .minimum = 0, | |
101 | .maximum = 1, | |
102 | .step = 1, | |
103 | .default_value = 1, | |
104 | .flags = 0, | |
105 | } | |
106 | }; | |
107 | ||
3acf2809 | 108 | static struct usb_driver em28xx_usb_driver; |
a6c2ba28 | 109 | |
a6c2ba28 | 110 | |
111 | /********************* v4l2 interface ******************************************/ | |
112 | ||
a6c2ba28 | 113 | /* |
3acf2809 | 114 | * em28xx_config() |
a6c2ba28 | 115 | * inits registers with sane defaults |
116 | */ | |
3acf2809 | 117 | static int em28xx_config(struct em28xx *dev) |
a6c2ba28 | 118 | { |
119 | ||
120 | /* Sets I2C speed to 100 KHz */ | |
2b2c93ac SS |
121 | if (!dev->is_em2800) |
122 | em28xx_write_regs_req(dev, 0x00, 0x06, "\x40", 1); | |
a6c2ba28 | 123 | |
124 | /* enable vbi capturing */ | |
e5589bef | 125 | |
9475fb1c MR |
126 | /* em28xx_write_regs_req(dev,0x00,0x0e,"\xC0",1); audio register */ |
127 | /* em28xx_write_regs_req(dev,0x00,0x0f,"\x80",1); clk register */ | |
e5589bef MCC |
128 | em28xx_write_regs_req(dev,0x00,0x11,"\x51",1); |
129 | ||
a6c2ba28 | 130 | dev->mute = 1; /* maybe not the right place... */ |
131 | dev->volume = 0x1f; | |
539c96d0 | 132 | |
3acf2809 MCC |
133 | em28xx_outfmt_set_yuv422(dev); |
134 | em28xx_colorlevels_set_default(dev); | |
135 | em28xx_compression_disable(dev); | |
a6c2ba28 | 136 | |
137 | return 0; | |
138 | } | |
139 | ||
140 | /* | |
3acf2809 | 141 | * em28xx_config_i2c() |
a6c2ba28 | 142 | * configure i2c attached devices |
143 | */ | |
943a4902 | 144 | static void em28xx_config_i2c(struct em28xx *dev) |
a6c2ba28 | 145 | { |
c7c0b34c HV |
146 | struct v4l2_routing route; |
147 | ||
148 | route.input = INPUT(dev->ctl_input)->vmux; | |
149 | route.output = 0; | |
663d1ba2 | 150 | em28xx_i2c_call_clients(dev, VIDIOC_INT_RESET, NULL); |
c7c0b34c | 151 | em28xx_i2c_call_clients(dev, VIDIOC_INT_S_VIDEO_ROUTING, &route); |
f5762e44 | 152 | em28xx_i2c_call_clients(dev, VIDIOC_STREAMON, NULL); |
a6c2ba28 | 153 | } |
154 | ||
155 | /* | |
3acf2809 | 156 | * em28xx_empty_framequeues() |
a6c2ba28 | 157 | * prepare queues for incoming and outgoing frames |
158 | */ | |
3acf2809 | 159 | static void em28xx_empty_framequeues(struct em28xx *dev) |
a6c2ba28 | 160 | { |
161 | u32 i; | |
162 | ||
163 | INIT_LIST_HEAD(&dev->inqueue); | |
164 | INIT_LIST_HEAD(&dev->outqueue); | |
165 | ||
3acf2809 | 166 | for (i = 0; i < EM28XX_NUM_FRAMES; i++) { |
a6c2ba28 | 167 | dev->frame[i].state = F_UNUSED; |
168 | dev->frame[i].buf.bytesused = 0; | |
169 | } | |
170 | } | |
171 | ||
eac94356 MCC |
172 | static void video_mux(struct em28xx *dev, int index) |
173 | { | |
c7c0b34c | 174 | struct v4l2_routing route; |
eac94356 | 175 | |
c7c0b34c HV |
176 | route.input = INPUT(index)->vmux; |
177 | route.output = 0; | |
eac94356 MCC |
178 | dev->ctl_input = index; |
179 | dev->ctl_ainput = INPUT(index)->amux; | |
180 | ||
c7c0b34c | 181 | em28xx_i2c_call_clients(dev, VIDIOC_INT_S_VIDEO_ROUTING, &route); |
eac94356 | 182 | |
eac94356 | 183 | if (dev->has_msp34xx) { |
9bb13a6d MCC |
184 | if (dev->i2s_speed) |
185 | em28xx_i2c_call_clients(dev, VIDIOC_INT_I2S_CLOCK_FREQ, &dev->i2s_speed); | |
2474ed44 | 186 | route.input = dev->ctl_ainput; |
07151724 | 187 | route.output = MSP_OUTPUT(MSP_SC_IN_DSP_SCART1); |
2474ed44 HV |
188 | /* Note: this is msp3400 specific */ |
189 | em28xx_i2c_call_clients(dev, VIDIOC_INT_S_AUDIO_ROUTING, &route); | |
eac94356 | 190 | } |
539c96d0 MCC |
191 | |
192 | em28xx_set_audio_source(dev); | |
eac94356 MCC |
193 | } |
194 | ||
a225452e MCC |
195 | /* Usage lock check functions */ |
196 | static int res_get(struct em28xx_fh *fh) | |
197 | { | |
198 | struct em28xx *dev = fh->dev; | |
199 | int rc = 0; | |
200 | ||
201 | /* This instance already has stream_on */ | |
202 | if (fh->stream_on) | |
203 | return rc; | |
204 | ||
205 | mutex_lock(&dev->lock); | |
206 | ||
207 | if (dev->stream_on) | |
208 | rc = -EINVAL; | |
209 | else { | |
210 | dev->stream_on = 1; | |
211 | fh->stream_on = 1; | |
212 | } | |
213 | ||
214 | mutex_unlock(&dev->lock); | |
215 | return rc; | |
216 | } | |
217 | ||
218 | static int res_check(struct em28xx_fh *fh) | |
219 | { | |
220 | return (fh->stream_on); | |
221 | } | |
222 | ||
223 | static void res_free(struct em28xx_fh *fh) | |
224 | { | |
225 | struct em28xx *dev = fh->dev; | |
226 | ||
227 | mutex_lock(&dev->lock); | |
228 | fh->stream_on = 0; | |
229 | dev->stream_on = 0; | |
230 | mutex_unlock(&dev->lock); | |
231 | } | |
232 | ||
a6c2ba28 | 233 | /* |
195a4ef6 | 234 | * em28xx_vm_open() |
a6c2ba28 | 235 | */ |
195a4ef6 | 236 | static void em28xx_vm_open(struct vm_area_struct *vma) |
a6c2ba28 | 237 | { |
195a4ef6 MCC |
238 | struct em28xx_frame_t *f = vma->vm_private_data; |
239 | f->vma_use_count++; | |
240 | } | |
9c75541f | 241 | |
195a4ef6 MCC |
242 | /* |
243 | * em28xx_vm_close() | |
244 | */ | |
245 | static void em28xx_vm_close(struct vm_area_struct *vma) | |
246 | { | |
247 | /* NOTE: buffers are not freed here */ | |
248 | struct em28xx_frame_t *f = vma->vm_private_data; | |
9c75541f | 249 | |
195a4ef6 MCC |
250 | if (f->vma_use_count) |
251 | f->vma_use_count--; | |
252 | } | |
a6c2ba28 | 253 | |
195a4ef6 MCC |
254 | static struct vm_operations_struct em28xx_vm_ops = { |
255 | .open = em28xx_vm_open, | |
256 | .close = em28xx_vm_close, | |
257 | }; | |
a6c2ba28 | 258 | |
195a4ef6 MCC |
259 | |
260 | /* | |
261 | * em28xx_get_ctrl() | |
262 | * return the current saturation, brightness or contrast, mute state | |
263 | */ | |
264 | static int em28xx_get_ctrl(struct em28xx *dev, struct v4l2_control *ctrl) | |
265 | { | |
266 | switch (ctrl->id) { | |
267 | case V4L2_CID_AUDIO_MUTE: | |
268 | ctrl->value = dev->mute; | |
269 | return 0; | |
270 | case V4L2_CID_AUDIO_VOLUME: | |
271 | ctrl->value = dev->volume; | |
272 | return 0; | |
273 | default: | |
274 | return -EINVAL; | |
a6c2ba28 | 275 | } |
195a4ef6 | 276 | } |
a6c2ba28 | 277 | |
195a4ef6 MCC |
278 | /* |
279 | * em28xx_set_ctrl() | |
280 | * mute or set new saturation, brightness or contrast | |
281 | */ | |
282 | static int em28xx_set_ctrl(struct em28xx *dev, const struct v4l2_control *ctrl) | |
283 | { | |
284 | switch (ctrl->id) { | |
285 | case V4L2_CID_AUDIO_MUTE: | |
286 | if (ctrl->value != dev->mute) { | |
287 | dev->mute = ctrl->value; | |
195a4ef6 MCC |
288 | return em28xx_audio_analog_set(dev); |
289 | } | |
290 | return 0; | |
291 | case V4L2_CID_AUDIO_VOLUME: | |
292 | dev->volume = ctrl->value; | |
293 | return em28xx_audio_analog_set(dev); | |
294 | default: | |
295 | return -EINVAL; | |
296 | } | |
297 | } | |
a6c2ba28 | 298 | |
195a4ef6 MCC |
299 | /* |
300 | * em28xx_stream_interrupt() | |
301 | * stops streaming | |
302 | */ | |
303 | static int em28xx_stream_interrupt(struct em28xx *dev) | |
304 | { | |
305 | int rc = 0; | |
a6c2ba28 | 306 | |
195a4ef6 | 307 | /* stop reading from the device */ |
a6c2ba28 | 308 | |
195a4ef6 MCC |
309 | dev->stream = STREAM_INTERRUPT; |
310 | rc = wait_event_timeout(dev->wait_stream, | |
311 | (dev->stream == STREAM_OFF) || | |
312 | (dev->state & DEV_DISCONNECTED), | |
313 | EM28XX_URB_TIMEOUT); | |
e5d4a56d | 314 | |
195a4ef6 MCC |
315 | if (rc) { |
316 | dev->state |= DEV_MISCONFIGURED; | |
317 | em28xx_videodbg("device is misconfigured; close and " | |
318 | "open /dev/video%d again\n", | |
319 | dev->vdev->minor-MINOR_VFL_TYPE_GRABBER_MIN); | |
320 | return rc; | |
321 | } | |
e5589bef | 322 | |
195a4ef6 MCC |
323 | return 0; |
324 | } | |
325 | ||
326 | ||
327 | static int check_dev(struct em28xx *dev) | |
328 | { | |
329 | if (dev->state & DEV_DISCONNECTED) { | |
330 | em28xx_errdev("v4l2 ioctl: device not present\n"); | |
331 | return -ENODEV; | |
e5589bef | 332 | } |
a6c2ba28 | 333 | |
195a4ef6 MCC |
334 | if (dev->state & DEV_MISCONFIGURED) { |
335 | em28xx_errdev("v4l2 ioctl: device is misconfigured; " | |
336 | "close and open it again\n"); | |
337 | return -EIO; | |
338 | } | |
339 | return 0; | |
340 | } | |
a6c2ba28 | 341 | |
195a4ef6 MCC |
342 | static void get_scale(struct em28xx *dev, |
343 | unsigned int width, unsigned int height, | |
344 | unsigned int *hscale, unsigned int *vscale) | |
345 | { | |
346 | unsigned int maxw = norm_maxw(dev); | |
347 | unsigned int maxh = norm_maxh(dev); | |
348 | ||
349 | *hscale = (((unsigned long)maxw) << 12) / width - 4096L; | |
350 | if (*hscale >= 0x4000) | |
351 | *hscale = 0x3fff; | |
352 | ||
353 | *vscale = (((unsigned long)maxh) << 12) / height - 4096L; | |
354 | if (*vscale >= 0x4000) | |
355 | *vscale = 0x3fff; | |
a6c2ba28 | 356 | } |
357 | ||
195a4ef6 MCC |
358 | /* ------------------------------------------------------------------ |
359 | IOCTL vidioc handling | |
360 | ------------------------------------------------------------------*/ | |
361 | ||
362 | static int vidioc_g_fmt_cap(struct file *file, void *priv, | |
363 | struct v4l2_format *f) | |
a6c2ba28 | 364 | { |
195a4ef6 MCC |
365 | struct em28xx_fh *fh = priv; |
366 | struct em28xx *dev = fh->dev; | |
a6c2ba28 | 367 | |
195a4ef6 | 368 | mutex_lock(&dev->lock); |
e5589bef | 369 | |
195a4ef6 MCC |
370 | f->fmt.pix.width = dev->width; |
371 | f->fmt.pix.height = dev->height; | |
372 | f->fmt.pix.pixelformat = V4L2_PIX_FMT_YUYV; | |
373 | f->fmt.pix.bytesperline = dev->bytesperline; | |
374 | f->fmt.pix.sizeimage = dev->frame_size; | |
375 | f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M; | |
e5589bef | 376 | |
195a4ef6 MCC |
377 | /* FIXME: TOP? NONE? BOTTOM? ALTENATE? */ |
378 | f->fmt.pix.field = dev->interlaced ? | |
379 | V4L2_FIELD_INTERLACED : V4L2_FIELD_TOP; | |
e5589bef | 380 | |
195a4ef6 MCC |
381 | mutex_unlock(&dev->lock); |
382 | return 0; | |
a6c2ba28 | 383 | } |
384 | ||
195a4ef6 MCC |
385 | static int vidioc_try_fmt_cap(struct file *file, void *priv, |
386 | struct v4l2_format *f) | |
a6c2ba28 | 387 | { |
195a4ef6 MCC |
388 | struct em28xx_fh *fh = priv; |
389 | struct em28xx *dev = fh->dev; | |
390 | int width = f->fmt.pix.width; | |
391 | int height = f->fmt.pix.height; | |
392 | unsigned int maxw = norm_maxw(dev); | |
393 | unsigned int maxh = norm_maxh(dev); | |
394 | unsigned int hscale, vscale; | |
395 | ||
396 | /* width must even because of the YUYV format | |
397 | height must be even because of interlacing */ | |
398 | height &= 0xfffe; | |
399 | width &= 0xfffe; | |
a6c2ba28 | 400 | |
195a4ef6 MCC |
401 | if (height < 32) |
402 | height = 32; | |
403 | if (height > maxh) | |
404 | height = maxh; | |
405 | if (width < 48) | |
406 | width = 48; | |
407 | if (width > maxw) | |
408 | width = maxw; | |
a6c2ba28 | 409 | |
195a4ef6 | 410 | mutex_lock(&dev->lock); |
a225452e | 411 | |
195a4ef6 MCC |
412 | if (dev->is_em2800) { |
413 | /* the em2800 can only scale down to 50% */ | |
414 | if (height % (maxh / 2)) | |
415 | height = maxh; | |
416 | if (width % (maxw / 2)) | |
417 | width = maxw; | |
418 | /* according to empiatech support */ | |
419 | /* the MaxPacketSize is to small to support */ | |
420 | /* framesizes larger than 640x480 @ 30 fps */ | |
421 | /* or 640x576 @ 25 fps. As this would cut */ | |
422 | /* of a part of the image we prefer */ | |
423 | /* 360x576 or 360x480 for now */ | |
424 | if (width == maxw && height == maxh) | |
425 | width /= 2; | |
426 | } | |
a225452e | 427 | |
195a4ef6 | 428 | get_scale(dev, width, height, &hscale, &vscale); |
a6c2ba28 | 429 | |
195a4ef6 MCC |
430 | width = (((unsigned long)maxw) << 12) / (hscale + 4096L); |
431 | height = (((unsigned long)maxh) << 12) / (vscale + 4096L); | |
a6c2ba28 | 432 | |
195a4ef6 MCC |
433 | f->fmt.pix.width = width; |
434 | f->fmt.pix.height = height; | |
435 | f->fmt.pix.pixelformat = V4L2_PIX_FMT_YUYV; | |
436 | f->fmt.pix.bytesperline = width * 2; | |
437 | f->fmt.pix.sizeimage = width * 2 * height; | |
438 | f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M; | |
439 | f->fmt.pix.field = V4L2_FIELD_INTERLACED; | |
a6c2ba28 | 440 | |
3593cab5 | 441 | mutex_unlock(&dev->lock); |
a6c2ba28 | 442 | return 0; |
443 | } | |
444 | ||
195a4ef6 MCC |
445 | static int vidioc_s_fmt_cap(struct file *file, void *priv, |
446 | struct v4l2_format *f) | |
a6c2ba28 | 447 | { |
195a4ef6 MCC |
448 | struct em28xx_fh *fh = priv; |
449 | struct em28xx *dev = fh->dev; | |
450 | int rc, i; | |
a6c2ba28 | 451 | |
195a4ef6 MCC |
452 | rc = check_dev(dev); |
453 | if (rc < 0) | |
454 | return rc; | |
a225452e | 455 | |
195a4ef6 | 456 | vidioc_try_fmt_cap(file, priv, f); |
a225452e | 457 | |
5a80415b SS |
458 | mutex_lock(&dev->lock); |
459 | ||
195a4ef6 MCC |
460 | for (i = 0; i < dev->num_frames; i++) |
461 | if (dev->frame[i].vma_use_count) { | |
462 | em28xx_videodbg("VIDIOC_S_FMT failed. " | |
463 | "Unmap the buffers first.\n"); | |
464 | rc = -EINVAL; | |
465 | goto err; | |
e5589bef | 466 | } |
195a4ef6 MCC |
467 | |
468 | /* stop io in case it is already in progress */ | |
469 | if (dev->stream == STREAM_ON) { | |
470 | em28xx_videodbg("VIDIOC_SET_FMT: interrupting stream\n"); | |
471 | rc = em28xx_stream_interrupt(dev); | |
472 | if (rc < 0) | |
473 | goto err; | |
e5589bef MCC |
474 | } |
475 | ||
195a4ef6 MCC |
476 | em28xx_release_buffers(dev); |
477 | dev->io = IO_NONE; | |
a6c2ba28 | 478 | |
195a4ef6 MCC |
479 | /* set new image size */ |
480 | dev->width = f->fmt.pix.width; | |
481 | dev->height = f->fmt.pix.height; | |
482 | dev->frame_size = dev->width * dev->height * 2; | |
483 | dev->field_size = dev->frame_size >> 1; | |
484 | dev->bytesperline = dev->width * 2; | |
485 | get_scale(dev, dev->width, dev->height, &dev->hscale, &dev->vscale); | |
a6c2ba28 | 486 | |
195a4ef6 MCC |
487 | /* FIXME: This is really weird! Why capture is starting with |
488 | this ioctl ??? | |
489 | */ | |
490 | em28xx_uninit_isoc(dev); | |
491 | em28xx_set_alternate(dev); | |
492 | em28xx_capture_start(dev, 1); | |
493 | em28xx_resolution_set(dev); | |
494 | em28xx_init_isoc(dev); | |
495 | rc = 0; | |
496 | ||
497 | err: | |
498 | mutex_unlock(&dev->lock); | |
499 | return rc; | |
500 | } | |
501 | ||
502 | static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id *norm) | |
503 | { | |
504 | struct em28xx_fh *fh = priv; | |
505 | struct em28xx *dev = fh->dev; | |
506 | struct v4l2_format f; | |
195a4ef6 MCC |
507 | int rc; |
508 | ||
509 | rc = check_dev(dev); | |
510 | if (rc < 0) | |
511 | return rc; | |
512 | ||
195a4ef6 | 513 | mutex_lock(&dev->lock); |
7d497f8a | 514 | dev->norm = *norm; |
195a4ef6 | 515 | mutex_unlock(&dev->lock); |
a6c2ba28 | 516 | |
195a4ef6 MCC |
517 | /* Adjusts width/height, if needed */ |
518 | f.fmt.pix.width = dev->width; | |
519 | f.fmt.pix.height = dev->height; | |
520 | vidioc_try_fmt_cap(file, priv, &f); | |
a6c2ba28 | 521 | |
195a4ef6 | 522 | mutex_lock(&dev->lock); |
a6c2ba28 | 523 | |
195a4ef6 MCC |
524 | /* set new image size */ |
525 | dev->width = f.fmt.pix.width; | |
526 | dev->height = f.fmt.pix.height; | |
527 | dev->frame_size = dev->width * dev->height * 2; | |
528 | dev->field_size = dev->frame_size >> 1; | |
529 | dev->bytesperline = dev->width * 2; | |
530 | get_scale(dev, dev->width, dev->height, &dev->hscale, &dev->vscale); | |
a6c2ba28 | 531 | |
195a4ef6 | 532 | em28xx_resolution_set(dev); |
7d497f8a | 533 | em28xx_i2c_call_clients(dev, VIDIOC_S_STD, &dev->norm); |
a6c2ba28 | 534 | |
195a4ef6 MCC |
535 | mutex_unlock(&dev->lock); |
536 | return 0; | |
537 | } | |
9e31ced8 | 538 | |
195a4ef6 MCC |
539 | static const char *iname[] = { |
540 | [EM28XX_VMUX_COMPOSITE1] = "Composite1", | |
541 | [EM28XX_VMUX_COMPOSITE2] = "Composite2", | |
542 | [EM28XX_VMUX_COMPOSITE3] = "Composite3", | |
543 | [EM28XX_VMUX_COMPOSITE4] = "Composite4", | |
544 | [EM28XX_VMUX_SVIDEO] = "S-Video", | |
545 | [EM28XX_VMUX_TELEVISION] = "Television", | |
546 | [EM28XX_VMUX_CABLE] = "Cable TV", | |
547 | [EM28XX_VMUX_DVB] = "DVB", | |
548 | [EM28XX_VMUX_DEBUG] = "for debug only", | |
549 | }; | |
9e31ced8 | 550 | |
195a4ef6 MCC |
551 | static int vidioc_enum_input(struct file *file, void *priv, |
552 | struct v4l2_input *i) | |
553 | { | |
554 | struct em28xx_fh *fh = priv; | |
555 | struct em28xx *dev = fh->dev; | |
556 | unsigned int n; | |
9e31ced8 | 557 | |
195a4ef6 MCC |
558 | n = i->index; |
559 | if (n >= MAX_EM28XX_INPUT) | |
560 | return -EINVAL; | |
561 | if (0 == INPUT(n)->type) | |
562 | return -EINVAL; | |
9e31ced8 | 563 | |
195a4ef6 MCC |
564 | i->index = n; |
565 | i->type = V4L2_INPUT_TYPE_CAMERA; | |
a6c2ba28 | 566 | |
195a4ef6 | 567 | strcpy(i->name, iname[INPUT(n)->type]); |
a6c2ba28 | 568 | |
195a4ef6 MCC |
569 | if ((EM28XX_VMUX_TELEVISION == INPUT(n)->type) || |
570 | (EM28XX_VMUX_CABLE == INPUT(n)->type)) | |
571 | i->type = V4L2_INPUT_TYPE_TUNER; | |
572 | ||
7d497f8a | 573 | i->std = dev->vdev->tvnorms; |
195a4ef6 MCC |
574 | |
575 | return 0; | |
a6c2ba28 | 576 | } |
577 | ||
195a4ef6 | 578 | static int vidioc_g_input(struct file *file, void *priv, unsigned int *i) |
a6c2ba28 | 579 | { |
195a4ef6 MCC |
580 | struct em28xx_fh *fh = priv; |
581 | struct em28xx *dev = fh->dev; | |
a6c2ba28 | 582 | |
195a4ef6 MCC |
583 | *i = dev->ctl_input; |
584 | ||
585 | return 0; | |
586 | } | |
587 | ||
588 | static int vidioc_s_input(struct file *file, void *priv, unsigned int i) | |
589 | { | |
590 | struct em28xx_fh *fh = priv; | |
591 | struct em28xx *dev = fh->dev; | |
592 | int rc; | |
593 | ||
594 | rc = check_dev(dev); | |
595 | if (rc < 0) | |
596 | return rc; | |
597 | ||
598 | if (i >= MAX_EM28XX_INPUT) | |
599 | return -EINVAL; | |
600 | if (0 == INPUT(i)->type) | |
601 | return -EINVAL; | |
a225452e | 602 | |
5a80415b | 603 | mutex_lock(&dev->lock); |
a6c2ba28 | 604 | |
195a4ef6 MCC |
605 | video_mux(dev, i); |
606 | ||
607 | mutex_unlock(&dev->lock); | |
608 | return 0; | |
609 | } | |
610 | ||
611 | static int vidioc_g_audio(struct file *file, void *priv, struct v4l2_audio *a) | |
612 | { | |
613 | struct em28xx_fh *fh = priv; | |
614 | struct em28xx *dev = fh->dev; | |
615 | unsigned int index = a->index; | |
616 | ||
617 | if (a->index > 1) | |
618 | return -EINVAL; | |
619 | ||
620 | index = dev->ctl_ainput; | |
621 | ||
622 | if (index == 0) { | |
623 | strcpy(a->name, "Television"); | |
a6c2ba28 | 624 | } else { |
195a4ef6 MCC |
625 | strcpy(a->name, "Line In"); |
626 | } | |
627 | a->capability = V4L2_AUDCAP_STEREO; | |
628 | a->index = index; | |
629 | ||
630 | return 0; | |
631 | } | |
632 | ||
633 | static int vidioc_s_audio(struct file *file, void *priv, struct v4l2_audio *a) | |
634 | { | |
635 | struct em28xx_fh *fh = priv; | |
636 | struct em28xx *dev = fh->dev; | |
637 | ||
638 | if (a->index != dev->ctl_ainput) | |
639 | return -EINVAL; | |
640 | ||
641 | return 0; | |
642 | } | |
643 | ||
644 | static int vidioc_queryctrl(struct file *file, void *priv, | |
645 | struct v4l2_queryctrl *qc) | |
646 | { | |
647 | struct em28xx_fh *fh = priv; | |
648 | struct em28xx *dev = fh->dev; | |
649 | int id = qc->id; | |
650 | int i; | |
651 | int rc; | |
652 | ||
653 | rc = check_dev(dev); | |
654 | if (rc < 0) | |
655 | return rc; | |
656 | ||
657 | memset(qc, 0, sizeof(*qc)); | |
658 | ||
659 | qc->id = id; | |
660 | ||
661 | if (!dev->has_msp34xx) { | |
662 | for (i = 0; i < ARRAY_SIZE(em28xx_qctrl); i++) { | |
663 | if (qc->id && qc->id == em28xx_qctrl[i].id) { | |
664 | memcpy(qc, &(em28xx_qctrl[i]), sizeof(*qc)); | |
665 | return 0; | |
a6c2ba28 | 666 | } |
667 | } | |
195a4ef6 MCC |
668 | } |
669 | mutex_lock(&dev->lock); | |
670 | em28xx_i2c_call_clients(dev, VIDIOC_QUERYCTRL, qc); | |
671 | mutex_unlock(&dev->lock); | |
a6c2ba28 | 672 | |
195a4ef6 MCC |
673 | if (qc->type) |
674 | return 0; | |
675 | else | |
676 | return -EINVAL; | |
677 | } | |
a6c2ba28 | 678 | |
195a4ef6 MCC |
679 | static int vidioc_g_ctrl(struct file *file, void *priv, |
680 | struct v4l2_control *ctrl) | |
681 | { | |
682 | struct em28xx_fh *fh = priv; | |
683 | struct em28xx *dev = fh->dev; | |
684 | int rc; | |
a6c2ba28 | 685 | |
195a4ef6 MCC |
686 | rc = check_dev(dev); |
687 | if (rc < 0) | |
688 | return rc; | |
689 | mutex_lock(&dev->lock); | |
a6c2ba28 | 690 | |
195a4ef6 MCC |
691 | if (!dev->has_msp34xx) |
692 | rc = em28xx_get_ctrl(dev, ctrl); | |
693 | else | |
694 | rc = -EINVAL; | |
695 | ||
696 | if (rc == -EINVAL) { | |
697 | em28xx_i2c_call_clients(dev, VIDIOC_G_CTRL, ctrl); | |
698 | rc = 0; | |
699 | } | |
700 | ||
701 | mutex_unlock(&dev->lock); | |
702 | return rc; | |
703 | } | |
704 | ||
705 | static int vidioc_s_ctrl(struct file *file, void *priv, | |
706 | struct v4l2_control *ctrl) | |
707 | { | |
708 | struct em28xx_fh *fh = priv; | |
709 | struct em28xx *dev = fh->dev; | |
710 | u8 i; | |
711 | int rc; | |
712 | ||
713 | rc = check_dev(dev); | |
714 | if (rc < 0) | |
715 | return rc; | |
716 | ||
717 | mutex_lock(&dev->lock); | |
718 | ||
719 | if (dev->has_msp34xx) | |
720 | em28xx_i2c_call_clients(dev, VIDIOC_S_CTRL, ctrl); | |
721 | else { | |
722 | rc = 1; | |
723 | for (i = 0; i < ARRAY_SIZE(em28xx_qctrl); i++) { | |
724 | if (ctrl->id == em28xx_qctrl[i].id) { | |
725 | if (ctrl->value < em28xx_qctrl[i].minimum || | |
726 | ctrl->value > em28xx_qctrl[i].maximum) { | |
727 | rc = -ERANGE; | |
728 | break; | |
729 | } | |
730 | ||
731 | rc = em28xx_set_ctrl(dev, ctrl); | |
732 | break; | |
733 | } | |
a6c2ba28 | 734 | } |
735 | } | |
736 | ||
195a4ef6 MCC |
737 | /* Control not found - try to send it to the attached devices */ |
738 | if (rc == 1) { | |
739 | em28xx_i2c_call_clients(dev, VIDIOC_S_CTRL, ctrl); | |
740 | rc = 0; | |
741 | } | |
742 | ||
5a80415b | 743 | mutex_unlock(&dev->lock); |
195a4ef6 | 744 | return rc; |
a6c2ba28 | 745 | } |
746 | ||
195a4ef6 MCC |
747 | static int vidioc_g_tuner(struct file *file, void *priv, |
748 | struct v4l2_tuner *t) | |
a6c2ba28 | 749 | { |
195a4ef6 MCC |
750 | struct em28xx_fh *fh = priv; |
751 | struct em28xx *dev = fh->dev; | |
752 | int rc; | |
753 | ||
754 | rc = check_dev(dev); | |
755 | if (rc < 0) | |
756 | return rc; | |
757 | ||
758 | if (0 != t->index) | |
759 | return -EINVAL; | |
760 | ||
761 | strcpy(t->name, "Tuner"); | |
762 | ||
763 | mutex_lock(&dev->lock); | |
764 | ||
765 | em28xx_i2c_call_clients(dev, VIDIOC_G_TUNER, t); | |
766 | ||
767 | mutex_unlock(&dev->lock); | |
768 | return 0; | |
a6c2ba28 | 769 | } |
770 | ||
195a4ef6 MCC |
771 | static int vidioc_s_tuner(struct file *file, void *priv, |
772 | struct v4l2_tuner *t) | |
a6c2ba28 | 773 | { |
195a4ef6 MCC |
774 | struct em28xx_fh *fh = priv; |
775 | struct em28xx *dev = fh->dev; | |
776 | int rc; | |
63337dd3 | 777 | |
195a4ef6 MCC |
778 | rc = check_dev(dev); |
779 | if (rc < 0) | |
780 | return rc; | |
781 | ||
782 | if (0 != t->index) | |
783 | return -EINVAL; | |
784 | ||
785 | mutex_lock(&dev->lock); | |
786 | ||
787 | em28xx_i2c_call_clients(dev, VIDIOC_S_TUNER, t); | |
788 | ||
789 | mutex_unlock(&dev->lock); | |
790 | return 0; | |
a6c2ba28 | 791 | } |
792 | ||
195a4ef6 MCC |
793 | static int vidioc_g_frequency(struct file *file, void *priv, |
794 | struct v4l2_frequency *f) | |
795 | { | |
796 | struct em28xx_fh *fh = priv; | |
797 | struct em28xx *dev = fh->dev; | |
a6c2ba28 | 798 | |
0be43754 | 799 | f->type = fh->radio ? V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV; |
195a4ef6 MCC |
800 | f->frequency = dev->ctl_freq; |
801 | ||
802 | return 0; | |
803 | } | |
804 | ||
805 | static int vidioc_s_frequency(struct file *file, void *priv, | |
806 | struct v4l2_frequency *f) | |
a6c2ba28 | 807 | { |
195a4ef6 MCC |
808 | struct em28xx_fh *fh = priv; |
809 | struct em28xx *dev = fh->dev; | |
810 | int rc; | |
9c75541f | 811 | |
195a4ef6 MCC |
812 | rc = check_dev(dev); |
813 | if (rc < 0) | |
814 | return rc; | |
815 | ||
816 | if (0 != f->tuner) | |
817 | return -EINVAL; | |
818 | ||
0be43754 MCC |
819 | if (unlikely(0 == fh->radio && f->type != V4L2_TUNER_ANALOG_TV)) |
820 | return -EINVAL; | |
821 | if (unlikely(1 == fh->radio && f->type != V4L2_TUNER_RADIO)) | |
195a4ef6 | 822 | return -EINVAL; |
a225452e MCC |
823 | |
824 | mutex_lock(&dev->lock); | |
a3a048ce | 825 | |
195a4ef6 MCC |
826 | dev->ctl_freq = f->frequency; |
827 | em28xx_i2c_call_clients(dev, VIDIOC_S_FREQUENCY, f); | |
a6c2ba28 | 828 | |
195a4ef6 MCC |
829 | mutex_unlock(&dev->lock); |
830 | return 0; | |
831 | } | |
a6c2ba28 | 832 | |
1e7ad56f MCC |
833 | #ifdef CONFIG_VIDEO_ADV_DEBUG |
834 | static int em28xx_reg_len(int reg) | |
835 | { | |
836 | switch (reg) { | |
837 | case AC97LSB_REG: | |
838 | case HSCALELOW_REG: | |
839 | case VSCALELOW_REG: | |
840 | ||
841 | return 2; | |
842 | default: | |
843 | return 1; | |
844 | } | |
845 | } | |
846 | ||
847 | static int vidioc_g_register(struct file *file, void *priv, | |
848 | struct v4l2_register *reg) | |
849 | { | |
850 | struct em28xx_fh *fh = priv; | |
851 | struct em28xx *dev = fh->dev; | |
852 | int ret; | |
853 | ||
854 | if (!v4l2_chip_match_host(reg->match_type, reg->match_chip)) | |
855 | return -EINVAL; | |
856 | ||
857 | if (em28xx_reg_len(reg->reg) == 1) { | |
858 | ret = em28xx_read_reg(dev, reg->reg); | |
859 | if (ret < 0) | |
860 | return ret; | |
861 | ||
862 | reg->val = ret; | |
863 | } else { | |
864 | u16 val; | |
865 | ret = em28xx_read_reg_req_len(dev, USB_REQ_GET_STATUS, | |
866 | reg->reg, (char *)&val, 2); | |
867 | if (ret < 0) | |
868 | return ret; | |
869 | ||
870 | reg->val = val; | |
871 | } | |
872 | ||
873 | return 0; | |
874 | } | |
875 | ||
876 | static int vidioc_s_register(struct file *file, void *priv, | |
877 | struct v4l2_register *reg) | |
878 | { | |
879 | struct em28xx_fh *fh = priv; | |
880 | struct em28xx *dev = fh->dev; | |
881 | u16 buf; | |
882 | ||
883 | buf = be16_to_cpu((__u16)reg->val); | |
884 | ||
885 | return em28xx_write_regs(dev, reg->reg, (char *)&buf, | |
886 | em28xx_reg_len(reg->reg)); | |
887 | } | |
888 | #endif | |
889 | ||
890 | ||
195a4ef6 MCC |
891 | static int vidioc_cropcap(struct file *file, void *priv, |
892 | struct v4l2_cropcap *cc) | |
893 | { | |
894 | struct em28xx_fh *fh = priv; | |
895 | struct em28xx *dev = fh->dev; | |
896 | ||
897 | if (cc->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) | |
a6c2ba28 | 898 | return -EINVAL; |
a6c2ba28 | 899 | |
195a4ef6 MCC |
900 | cc->bounds.left = 0; |
901 | cc->bounds.top = 0; | |
902 | cc->bounds.width = dev->width; | |
903 | cc->bounds.height = dev->height; | |
904 | cc->defrect = cc->bounds; | |
905 | cc->pixelaspect.numerator = 54; /* 4:3 FIXME: remove magic numbers */ | |
906 | cc->pixelaspect.denominator = 59; | |
907 | ||
908 | return 0; | |
909 | } | |
910 | ||
911 | static int vidioc_streamon(struct file *file, void *priv, | |
912 | enum v4l2_buf_type type) | |
913 | { | |
914 | struct em28xx_fh *fh = priv; | |
915 | struct em28xx *dev = fh->dev; | |
916 | int rc; | |
917 | ||
918 | rc = check_dev(dev); | |
919 | if (rc < 0) | |
920 | return rc; | |
921 | ||
922 | if (type != V4L2_BUF_TYPE_VIDEO_CAPTURE || dev->io != IO_MMAP) | |
a6c2ba28 | 923 | return -EINVAL; |
195a4ef6 MCC |
924 | |
925 | if (list_empty(&dev->inqueue)) | |
926 | return -EINVAL; | |
927 | ||
928 | mutex_lock(&dev->lock); | |
929 | ||
930 | if (unlikely(res_get(fh) < 0)) { | |
931 | mutex_unlock(&dev->lock); | |
932 | return -EBUSY; | |
a6c2ba28 | 933 | } |
934 | ||
195a4ef6 | 935 | dev->stream = STREAM_ON; /* FIXME: Start video capture here? */ |
a6c2ba28 | 936 | |
195a4ef6 MCC |
937 | mutex_unlock(&dev->lock); |
938 | return 0; | |
939 | } | |
940 | ||
941 | static int vidioc_streamoff(struct file *file, void *priv, | |
942 | enum v4l2_buf_type type) | |
943 | { | |
944 | struct em28xx_fh *fh = priv; | |
945 | struct em28xx *dev = fh->dev; | |
946 | int rc; | |
947 | ||
948 | rc = check_dev(dev); | |
949 | if (rc < 0) | |
950 | return rc; | |
951 | ||
952 | if (type != V4L2_BUF_TYPE_VIDEO_CAPTURE || dev->io != IO_MMAP) | |
953 | return -EINVAL; | |
954 | ||
955 | mutex_lock(&dev->lock); | |
956 | ||
957 | if (dev->stream == STREAM_ON) { | |
958 | em28xx_videodbg("VIDIOC_STREAMOFF: interrupting stream\n"); | |
959 | rc = em28xx_stream_interrupt(dev); | |
960 | if (rc < 0) { | |
5a80415b | 961 | mutex_unlock(&dev->lock); |
195a4ef6 | 962 | return rc; |
a6c2ba28 | 963 | } |
a6c2ba28 | 964 | } |
965 | ||
195a4ef6 | 966 | em28xx_empty_framequeues(dev); |
a6c2ba28 | 967 | |
5a80415b | 968 | mutex_unlock(&dev->lock); |
a6c2ba28 | 969 | return 0; |
970 | } | |
971 | ||
195a4ef6 MCC |
972 | static int vidioc_querycap(struct file *file, void *priv, |
973 | struct v4l2_capability *cap) | |
a6c2ba28 | 974 | { |
195a4ef6 MCC |
975 | struct em28xx_fh *fh = priv; |
976 | struct em28xx *dev = fh->dev; | |
977 | ||
978 | strlcpy(cap->driver, "em28xx", sizeof(cap->driver)); | |
979 | strlcpy(cap->card, em28xx_boards[dev->model].name, sizeof(cap->card)); | |
980 | strlcpy(cap->bus_info, dev->udev->dev.bus_id, sizeof(cap->bus_info)); | |
981 | ||
982 | cap->version = EM28XX_VERSION_CODE; | |
983 | ||
984 | cap->capabilities = | |
985 | V4L2_CAP_SLICED_VBI_CAPTURE | | |
986 | V4L2_CAP_VIDEO_CAPTURE | | |
987 | V4L2_CAP_AUDIO | | |
988 | V4L2_CAP_READWRITE | V4L2_CAP_STREAMING; | |
989 | ||
ed086314 | 990 | if (dev->tuner_type != TUNER_ABSENT) |
195a4ef6 MCC |
991 | cap->capabilities |= V4L2_CAP_TUNER; |
992 | ||
993 | return 0; | |
c0477ad9 MCC |
994 | } |
995 | ||
195a4ef6 MCC |
996 | static int vidioc_enum_fmt_cap(struct file *file, void *priv, |
997 | struct v4l2_fmtdesc *fmtd) | |
a6c2ba28 | 998 | { |
195a4ef6 | 999 | if (fmtd->index != 0) |
c0477ad9 | 1000 | return -EINVAL; |
195a4ef6 MCC |
1001 | |
1002 | fmtd->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; | |
1003 | strcpy(fmtd->description, "Packed YUY2"); | |
1004 | fmtd->pixelformat = V4L2_PIX_FMT_YUYV; | |
1005 | memset(fmtd->reserved, 0, sizeof(fmtd->reserved)); | |
1006 | ||
1007 | return 0; | |
c0477ad9 MCC |
1008 | } |
1009 | ||
195a4ef6 MCC |
1010 | /* Sliced VBI ioctls */ |
1011 | static int vidioc_g_fmt_vbi_capture(struct file *file, void *priv, | |
1012 | struct v4l2_format *f) | |
a6c2ba28 | 1013 | { |
195a4ef6 MCC |
1014 | struct em28xx_fh *fh = priv; |
1015 | struct em28xx *dev = fh->dev; | |
1016 | int rc; | |
a6c2ba28 | 1017 | |
195a4ef6 MCC |
1018 | rc = check_dev(dev); |
1019 | if (rc < 0) | |
1020 | return rc; | |
a6c2ba28 | 1021 | |
195a4ef6 MCC |
1022 | mutex_lock(&dev->lock); |
1023 | ||
1024 | f->fmt.sliced.service_set = 0; | |
1025 | ||
1026 | em28xx_i2c_call_clients(dev, VIDIOC_G_FMT, f); | |
1027 | ||
1028 | if (f->fmt.sliced.service_set == 0) | |
1029 | rc = -EINVAL; | |
1030 | ||
1031 | mutex_unlock(&dev->lock); | |
1032 | return rc; | |
1033 | } | |
1034 | ||
1035 | static int vidioc_try_set_vbi_capture(struct file *file, void *priv, | |
1036 | struct v4l2_format *f) | |
1037 | { | |
1038 | struct em28xx_fh *fh = priv; | |
1039 | struct em28xx *dev = fh->dev; | |
1040 | int rc; | |
1041 | ||
1042 | rc = check_dev(dev); | |
1043 | if (rc < 0) | |
1044 | return rc; | |
1045 | ||
1046 | mutex_lock(&dev->lock); | |
1047 | em28xx_i2c_call_clients(dev, VIDIOC_G_FMT, f); | |
1048 | mutex_unlock(&dev->lock); | |
1049 | ||
1050 | if (f->fmt.sliced.service_set == 0) | |
1051 | return -EINVAL; | |
a6c2ba28 | 1052 | |
1053 | return 0; | |
1054 | } | |
1055 | ||
195a4ef6 MCC |
1056 | |
1057 | static int vidioc_reqbufs(struct file *file, void *priv, | |
1058 | struct v4l2_requestbuffers *rb) | |
a6c2ba28 | 1059 | { |
195a4ef6 MCC |
1060 | struct em28xx_fh *fh = priv; |
1061 | struct em28xx *dev = fh->dev; | |
1062 | u32 i; | |
1063 | int rc; | |
a6c2ba28 | 1064 | |
195a4ef6 MCC |
1065 | rc = check_dev(dev); |
1066 | if (rc < 0) | |
1067 | return rc; | |
a6c2ba28 | 1068 | |
195a4ef6 MCC |
1069 | if (rb->type != V4L2_BUF_TYPE_VIDEO_CAPTURE || |
1070 | rb->memory != V4L2_MEMORY_MMAP) | |
1071 | return -EINVAL; | |
a6c2ba28 | 1072 | |
195a4ef6 MCC |
1073 | if (dev->io == IO_READ) { |
1074 | em28xx_videodbg("method is set to read;" | |
1075 | " close and open the device again to" | |
1076 | " choose the mmap I/O method\n"); | |
1077 | return -EINVAL; | |
1078 | } | |
a6c2ba28 | 1079 | |
195a4ef6 MCC |
1080 | for (i = 0; i < dev->num_frames; i++) |
1081 | if (dev->frame[i].vma_use_count) { | |
1082 | em28xx_videodbg("VIDIOC_REQBUFS failed; " | |
1083 | "previous buffers are still mapped\n"); | |
1084 | return -EINVAL; | |
1085 | } | |
a6c2ba28 | 1086 | |
195a4ef6 | 1087 | mutex_lock(&dev->lock); |
a6c2ba28 | 1088 | |
195a4ef6 MCC |
1089 | if (dev->stream == STREAM_ON) { |
1090 | em28xx_videodbg("VIDIOC_REQBUFS: interrupting stream\n"); | |
1091 | rc = em28xx_stream_interrupt(dev); | |
1092 | if (rc < 0) { | |
1093 | mutex_unlock(&dev->lock); | |
1094 | return rc; | |
1095 | } | |
1096 | } | |
a6c2ba28 | 1097 | |
195a4ef6 MCC |
1098 | em28xx_empty_framequeues(dev); |
1099 | ||
1100 | em28xx_release_buffers(dev); | |
1101 | if (rb->count) | |
1102 | rb->count = em28xx_request_buffers(dev, rb->count); | |
1103 | ||
1104 | dev->frame_current = NULL; | |
1105 | dev->io = rb->count ? IO_MMAP : IO_NONE; | |
a6c2ba28 | 1106 | |
195a4ef6 | 1107 | mutex_unlock(&dev->lock); |
a6c2ba28 | 1108 | return 0; |
1109 | } | |
1110 | ||
195a4ef6 MCC |
1111 | static int vidioc_querybuf(struct file *file, void *priv, |
1112 | struct v4l2_buffer *b) | |
e5589bef | 1113 | { |
195a4ef6 MCC |
1114 | struct em28xx_fh *fh = priv; |
1115 | struct em28xx *dev = fh->dev; | |
1116 | int rc; | |
e5589bef | 1117 | |
195a4ef6 MCC |
1118 | rc = check_dev(dev); |
1119 | if (rc < 0) | |
1120 | return rc; | |
2d50f847 | 1121 | |
195a4ef6 MCC |
1122 | if (b->type != V4L2_BUF_TYPE_VIDEO_CAPTURE || |
1123 | b->index >= dev->num_frames || dev->io != IO_MMAP) | |
1124 | return -EINVAL; | |
2d50f847 | 1125 | |
195a4ef6 | 1126 | mutex_lock(&dev->lock); |
2d50f847 | 1127 | |
195a4ef6 | 1128 | memcpy(b, &dev->frame[b->index].buf, sizeof(*b)); |
2d50f847 | 1129 | |
195a4ef6 MCC |
1130 | if (dev->frame[b->index].vma_use_count) |
1131 | b->flags |= V4L2_BUF_FLAG_MAPPED; | |
1132 | ||
1133 | if (dev->frame[b->index].state == F_DONE) | |
1134 | b->flags |= V4L2_BUF_FLAG_DONE; | |
1135 | else if (dev->frame[b->index].state != F_UNUSED) | |
1136 | b->flags |= V4L2_BUF_FLAG_QUEUED; | |
1137 | ||
1138 | mutex_unlock(&dev->lock); | |
1139 | return 0; | |
1140 | } | |
1141 | ||
1142 | static int vidioc_qbuf(struct file *file, void *priv, struct v4l2_buffer *b) | |
1143 | { | |
1144 | struct em28xx_fh *fh = priv; | |
1145 | struct em28xx *dev = fh->dev; | |
1146 | unsigned long lock_flags; | |
1147 | int rc; | |
1148 | ||
1149 | rc = check_dev(dev); | |
1150 | if (rc < 0) | |
1151 | return rc; | |
1152 | ||
1153 | if (b->type != V4L2_BUF_TYPE_VIDEO_CAPTURE || dev->io != IO_MMAP || | |
1154 | b->index >= dev->num_frames) | |
2d50f847 | 1155 | return -EINVAL; |
195a4ef6 MCC |
1156 | |
1157 | if (dev->frame[b->index].state != F_UNUSED) | |
1158 | return -EAGAIN; | |
1159 | ||
1160 | dev->frame[b->index].state = F_QUEUED; | |
1161 | ||
1162 | /* add frame to fifo */ | |
1163 | spin_lock_irqsave(&dev->queue_lock, lock_flags); | |
1164 | list_add_tail(&dev->frame[b->index].frame, &dev->inqueue); | |
1165 | spin_unlock_irqrestore(&dev->queue_lock, lock_flags); | |
1166 | ||
1167 | return 0; | |
e5589bef MCC |
1168 | } |
1169 | ||
195a4ef6 | 1170 | static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *b) |
2d50f847 | 1171 | { |
195a4ef6 MCC |
1172 | struct em28xx_fh *fh = priv; |
1173 | struct em28xx *dev = fh->dev; | |
1174 | int rc; | |
1175 | struct em28xx_frame_t *f; | |
1176 | unsigned long lock_flags; | |
1177 | ||
1178 | rc = check_dev(dev); | |
1179 | if (rc < 0) | |
1180 | return rc; | |
2d50f847 | 1181 | |
195a4ef6 MCC |
1182 | if (b->type != V4L2_BUF_TYPE_VIDEO_CAPTURE || dev->io != IO_MMAP) |
1183 | return -EINVAL; | |
2d50f847 | 1184 | |
195a4ef6 MCC |
1185 | if (list_empty(&dev->outqueue)) { |
1186 | if (dev->stream == STREAM_OFF) | |
1187 | return -EINVAL; | |
2d50f847 | 1188 | |
195a4ef6 MCC |
1189 | if (file->f_flags & O_NONBLOCK) |
1190 | return -EAGAIN; | |
2d50f847 | 1191 | |
195a4ef6 MCC |
1192 | rc = wait_event_interruptible(dev->wait_frame, |
1193 | (!list_empty(&dev->outqueue)) || | |
1194 | (dev->state & DEV_DISCONNECTED)); | |
1195 | if (rc) | |
1196 | return rc; | |
2d50f847 | 1197 | |
195a4ef6 MCC |
1198 | if (dev->state & DEV_DISCONNECTED) |
1199 | return -ENODEV; | |
2d50f847 MCC |
1200 | } |
1201 | ||
195a4ef6 MCC |
1202 | spin_lock_irqsave(&dev->queue_lock, lock_flags); |
1203 | f = list_entry(dev->outqueue.next, struct em28xx_frame_t, frame); | |
1204 | list_del(dev->outqueue.next); | |
1205 | spin_unlock_irqrestore(&dev->queue_lock, lock_flags); | |
2d50f847 | 1206 | |
195a4ef6 MCC |
1207 | f->state = F_UNUSED; |
1208 | memcpy(b, &f->buf, sizeof(*b)); | |
2d50f847 | 1209 | |
195a4ef6 MCC |
1210 | if (f->vma_use_count) |
1211 | b->flags |= V4L2_BUF_FLAG_MAPPED; | |
2d50f847 | 1212 | |
195a4ef6 MCC |
1213 | return 0; |
1214 | } | |
2d50f847 | 1215 | |
0be43754 MCC |
1216 | /* ----------------------------------------------------------- */ |
1217 | /* RADIO ESPECIFIC IOCTLS */ | |
1218 | /* ----------------------------------------------------------- */ | |
1219 | ||
1220 | static int radio_querycap(struct file *file, void *priv, | |
1221 | struct v4l2_capability *cap) | |
1222 | { | |
1223 | struct em28xx *dev = ((struct em28xx_fh *)priv)->dev; | |
1224 | ||
1225 | strlcpy(cap->driver, "em28xx", sizeof(cap->driver)); | |
1226 | strlcpy(cap->card, em28xx_boards[dev->model].name, sizeof(cap->card)); | |
1227 | strlcpy(cap->bus_info, dev->udev->dev.bus_id, sizeof(cap->bus_info)); | |
1228 | ||
1229 | cap->version = EM28XX_VERSION_CODE; | |
1230 | cap->capabilities = V4L2_CAP_TUNER; | |
1231 | return 0; | |
1232 | } | |
1233 | ||
1234 | static int radio_g_tuner(struct file *file, void *priv, | |
1235 | struct v4l2_tuner *t) | |
1236 | { | |
1237 | struct em28xx *dev = ((struct em28xx_fh *)priv)->dev; | |
1238 | ||
1239 | if (unlikely(t->index > 0)) | |
1240 | return -EINVAL; | |
1241 | ||
1242 | strcpy(t->name, "Radio"); | |
1243 | t->type = V4L2_TUNER_RADIO; | |
1244 | ||
1245 | em28xx_i2c_call_clients(dev, VIDIOC_G_TUNER, t); | |
1246 | return 0; | |
1247 | } | |
1248 | ||
1249 | static int radio_enum_input(struct file *file, void *priv, | |
1250 | struct v4l2_input *i) | |
1251 | { | |
1252 | if (i->index != 0) | |
1253 | return -EINVAL; | |
1254 | strcpy(i->name, "Radio"); | |
1255 | i->type = V4L2_INPUT_TYPE_TUNER; | |
1256 | ||
1257 | return 0; | |
1258 | } | |
1259 | ||
1260 | static int radio_g_audio(struct file *file, void *priv, struct v4l2_audio *a) | |
1261 | { | |
1262 | if (unlikely(a->index)) | |
1263 | return -EINVAL; | |
1264 | ||
1265 | strcpy(a->name, "Radio"); | |
1266 | return 0; | |
1267 | } | |
1268 | ||
1269 | static int radio_s_tuner(struct file *file, void *priv, | |
1270 | struct v4l2_tuner *t) | |
1271 | { | |
1272 | struct em28xx *dev = ((struct em28xx_fh *)priv)->dev; | |
1273 | ||
1274 | if (0 != t->index) | |
1275 | return -EINVAL; | |
1276 | ||
1277 | em28xx_i2c_call_clients(dev, VIDIOC_S_TUNER, t); | |
1278 | ||
1279 | return 0; | |
1280 | } | |
1281 | ||
1282 | static int radio_s_audio(struct file *file, void *fh, | |
1283 | struct v4l2_audio *a) | |
1284 | { | |
1285 | return 0; | |
1286 | } | |
1287 | ||
1288 | static int radio_s_input(struct file *file, void *fh, unsigned int i) | |
1289 | { | |
1290 | return 0; | |
1291 | } | |
1292 | ||
1293 | static int radio_queryctrl(struct file *file, void *priv, | |
1294 | struct v4l2_queryctrl *qc) | |
1295 | { | |
1296 | int i; | |
1297 | ||
1298 | if (qc->id < V4L2_CID_BASE || | |
1299 | qc->id >= V4L2_CID_LASTP1) | |
1300 | return -EINVAL; | |
1301 | ||
1302 | for (i = 0; i < ARRAY_SIZE(em28xx_qctrl); i++) { | |
1303 | if (qc->id && qc->id == em28xx_qctrl[i].id) { | |
1304 | memcpy(qc, &(em28xx_qctrl[i]), sizeof(*qc)); | |
1305 | return 0; | |
1306 | } | |
1307 | } | |
1308 | ||
1309 | return -EINVAL; | |
1310 | } | |
1311 | ||
195a4ef6 MCC |
1312 | /* |
1313 | * em28xx_v4l2_open() | |
1314 | * inits the device and starts isoc transfer | |
1315 | */ | |
1316 | static int em28xx_v4l2_open(struct inode *inode, struct file *filp) | |
1317 | { | |
1318 | int minor = iminor(inode); | |
0be43754 | 1319 | int errCode = 0, radio = 0; |
195a4ef6 MCC |
1320 | struct em28xx *h,*dev = NULL; |
1321 | struct em28xx_fh *fh; | |
2d50f847 | 1322 | |
195a4ef6 MCC |
1323 | list_for_each_entry(h, &em28xx_devlist, devlist) { |
1324 | if (h->vdev->minor == minor) { | |
1325 | dev = h; | |
1326 | dev->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; | |
1327 | } | |
1328 | if (h->vbi_dev->minor == minor) { | |
1329 | dev = h; | |
1330 | dev->type = V4L2_BUF_TYPE_VBI_CAPTURE; | |
1331 | } | |
0be43754 MCC |
1332 | if (h->radio_dev && |
1333 | h->radio_dev->minor == minor) { | |
1334 | radio = 1; | |
1335 | dev = h; | |
1336 | } | |
2d50f847 | 1337 | } |
195a4ef6 MCC |
1338 | if (NULL == dev) |
1339 | return -ENODEV; | |
2d50f847 | 1340 | |
195a4ef6 MCC |
1341 | em28xx_videodbg("open minor=%d type=%s users=%d\n", |
1342 | minor,v4l2_type_names[dev->type],dev->users); | |
2d50f847 | 1343 | |
195a4ef6 | 1344 | fh = kzalloc(sizeof(struct em28xx_fh), GFP_KERNEL); |
9aeb4b05 | 1345 | |
195a4ef6 MCC |
1346 | if (!fh) { |
1347 | em28xx_errdev("em28xx-video.c: Out of memory?!\n"); | |
1348 | return -ENOMEM; | |
1349 | } | |
1350 | mutex_lock(&dev->lock); | |
1351 | fh->dev = dev; | |
0be43754 | 1352 | fh->radio = radio; |
195a4ef6 | 1353 | filp->private_data = fh; |
9aeb4b05 | 1354 | |
195a4ef6 MCC |
1355 | if (dev->type == V4L2_BUF_TYPE_VIDEO_CAPTURE && dev->users == 0) { |
1356 | em28xx_set_alternate(dev); | |
2d50f847 | 1357 | |
195a4ef6 MCC |
1358 | dev->width = norm_maxw(dev); |
1359 | dev->height = norm_maxh(dev); | |
1360 | dev->frame_size = dev->width * dev->height * 2; | |
1361 | dev->field_size = dev->frame_size >> 1; /*both_fileds ? dev->frame_size>>1 : dev->frame_size; */ | |
1362 | dev->bytesperline = dev->width * 2; | |
1363 | dev->hscale = 0; | |
1364 | dev->vscale = 0; | |
2d50f847 | 1365 | |
195a4ef6 MCC |
1366 | em28xx_capture_start(dev, 1); |
1367 | em28xx_resolution_set(dev); | |
2d50f847 | 1368 | |
2d50f847 | 1369 | |
195a4ef6 MCC |
1370 | /* start the transfer */ |
1371 | errCode = em28xx_init_isoc(dev); | |
1372 | if (errCode) | |
1373 | goto err; | |
2d50f847 | 1374 | |
195a4ef6 | 1375 | em28xx_empty_framequeues(dev); |
2d50f847 | 1376 | } |
0be43754 MCC |
1377 | if (fh->radio) { |
1378 | em28xx_videodbg("video_open: setting radio device\n"); | |
1379 | em28xx_i2c_call_clients(dev, AUDC_SET_RADIO, NULL); | |
1380 | } | |
2d50f847 | 1381 | |
195a4ef6 | 1382 | dev->users++; |
2d50f847 | 1383 | |
195a4ef6 MCC |
1384 | err: |
1385 | mutex_unlock(&dev->lock); | |
1386 | return errCode; | |
2d50f847 | 1387 | } |
e5589bef | 1388 | |
a6c2ba28 | 1389 | /* |
195a4ef6 MCC |
1390 | * em28xx_realease_resources() |
1391 | * unregisters the v4l2,i2c and usb devices | |
1392 | * called when the device gets disconected or at module unload | |
1393 | */ | |
1394 | static void em28xx_release_resources(struct em28xx *dev) | |
a6c2ba28 | 1395 | { |
a6c2ba28 | 1396 | |
195a4ef6 | 1397 | /*FIXME: I2C IR should be disconnected */ |
a6c2ba28 | 1398 | |
195a4ef6 MCC |
1399 | em28xx_info("V4L2 devices /dev/video%d and /dev/vbi%d deregistered\n", |
1400 | dev->vdev->minor-MINOR_VFL_TYPE_GRABBER_MIN, | |
1401 | dev->vbi_dev->minor-MINOR_VFL_TYPE_VBI_MIN); | |
1402 | list_del(&dev->devlist); | |
0be43754 MCC |
1403 | if (dev->radio_dev) { |
1404 | if (-1 != dev->radio_dev->minor) | |
1405 | video_unregister_device(dev->radio_dev); | |
1406 | else | |
1407 | video_device_release(dev->radio_dev); | |
1408 | dev->radio_dev = NULL; | |
1409 | } | |
1410 | if (dev->vbi_dev) { | |
1411 | if (-1 != dev->vbi_dev->minor) | |
1412 | video_unregister_device(dev->vbi_dev); | |
1413 | else | |
1414 | video_device_release(dev->vbi_dev); | |
1415 | dev->vbi_dev = NULL; | |
1416 | } | |
1417 | if (dev->vdev) { | |
1418 | if (-1 != dev->vdev->minor) | |
1419 | video_unregister_device(dev->vdev); | |
1420 | else | |
1421 | video_device_release(dev->vdev); | |
1422 | dev->vdev = NULL; | |
1423 | } | |
195a4ef6 MCC |
1424 | em28xx_i2c_unregister(dev); |
1425 | usb_put_dev(dev->udev); | |
a6c2ba28 | 1426 | |
195a4ef6 MCC |
1427 | /* Mark device as unused */ |
1428 | em28xx_devused&=~(1<<dev->devno); | |
1429 | } | |
a6c2ba28 | 1430 | |
195a4ef6 MCC |
1431 | /* |
1432 | * em28xx_v4l2_close() | |
1433 | * stops streaming and deallocates all resources allocated by the v4l2 calls and ioctls | |
1434 | */ | |
1435 | static int em28xx_v4l2_close(struct inode *inode, struct file *filp) | |
1436 | { | |
1437 | struct em28xx_fh *fh = filp->private_data; | |
1438 | struct em28xx *dev = fh->dev; | |
1439 | int errCode; | |
a6c2ba28 | 1440 | |
195a4ef6 | 1441 | em28xx_videodbg("users=%d\n", dev->users); |
a6c2ba28 | 1442 | |
a6c2ba28 | 1443 | |
195a4ef6 MCC |
1444 | if (res_check(fh)) |
1445 | res_free(fh); | |
a6c2ba28 | 1446 | |
195a4ef6 | 1447 | mutex_lock(&dev->lock); |
a6c2ba28 | 1448 | |
195a4ef6 MCC |
1449 | if (dev->users == 1) { |
1450 | em28xx_uninit_isoc(dev); | |
1451 | em28xx_release_buffers(dev); | |
1452 | dev->io = IO_NONE; | |
a6c2ba28 | 1453 | |
195a4ef6 MCC |
1454 | /* the device is already disconnect, |
1455 | free the remaining resources */ | |
1456 | if (dev->state & DEV_DISCONNECTED) { | |
1457 | em28xx_release_resources(dev); | |
1458 | mutex_unlock(&dev->lock); | |
1459 | kfree(dev); | |
1460 | return 0; | |
1461 | } | |
a6c2ba28 | 1462 | |
195a4ef6 MCC |
1463 | /* set alternate 0 */ |
1464 | dev->alt = 0; | |
1465 | em28xx_videodbg("setting alternate 0\n"); | |
1466 | errCode = usb_set_interface(dev->udev, 0, 0); | |
1467 | if (errCode < 0) { | |
1468 | em28xx_errdev("cannot change alternate number to " | |
1469 | "0 (error=%i)\n", errCode); | |
1470 | } | |
9aeb4b05 | 1471 | } |
195a4ef6 MCC |
1472 | kfree(fh); |
1473 | dev->users--; | |
1474 | wake_up_interruptible_nr(&dev->open, 1); | |
1475 | mutex_unlock(&dev->lock); | |
1476 | return 0; | |
1477 | } | |
a6c2ba28 | 1478 | |
195a4ef6 MCC |
1479 | /* |
1480 | * em28xx_v4l2_read() | |
1481 | * will allocate buffers when called for the first time | |
1482 | */ | |
1483 | static ssize_t | |
1484 | em28xx_v4l2_read(struct file *filp, char __user * buf, size_t count, | |
1485 | loff_t * f_pos) | |
1486 | { | |
1487 | struct em28xx_frame_t *f, *i; | |
1488 | unsigned long lock_flags; | |
1489 | int ret = 0; | |
1490 | struct em28xx_fh *fh = filp->private_data; | |
1491 | struct em28xx *dev = fh->dev; | |
a6c2ba28 | 1492 | |
195a4ef6 MCC |
1493 | /* FIXME: read() is not prepared to allow changing the video |
1494 | resolution while streaming. Seems a bug at em28xx_set_fmt | |
1495 | */ | |
a6c2ba28 | 1496 | |
195a4ef6 MCC |
1497 | if (unlikely(res_get(fh) < 0)) |
1498 | return -EBUSY; | |
9aeb4b05 | 1499 | |
195a4ef6 | 1500 | mutex_lock(&dev->lock); |
a6c2ba28 | 1501 | |
195a4ef6 MCC |
1502 | if (dev->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) |
1503 | em28xx_videodbg("V4l2_Buf_type_videocapture is set\n"); | |
1504 | ||
1505 | if (dev->type == V4L2_BUF_TYPE_VBI_CAPTURE) { | |
1506 | em28xx_videodbg("V4L2_BUF_TYPE_VBI_CAPTURE is set\n"); | |
1507 | em28xx_videodbg("not supported yet! ...\n"); | |
1508 | if (copy_to_user(buf, "", 1)) { | |
1509 | mutex_unlock(&dev->lock); | |
1510 | return -EFAULT; | |
9aeb4b05 | 1511 | } |
5a80415b | 1512 | mutex_unlock(&dev->lock); |
195a4ef6 | 1513 | return (1); |
9aeb4b05 | 1514 | } |
195a4ef6 MCC |
1515 | if (dev->type == V4L2_BUF_TYPE_SLICED_VBI_CAPTURE) { |
1516 | em28xx_videodbg("V4L2_BUF_TYPE_SLICED_VBI_CAPTURE is set\n"); | |
1517 | em28xx_videodbg("not supported yet! ...\n"); | |
1518 | if (copy_to_user(buf, "", 1)) { | |
5a80415b | 1519 | mutex_unlock(&dev->lock); |
195a4ef6 | 1520 | return -EFAULT; |
9aeb4b05 | 1521 | } |
5a80415b | 1522 | mutex_unlock(&dev->lock); |
195a4ef6 | 1523 | return (1); |
9aeb4b05 | 1524 | } |
a6c2ba28 | 1525 | |
195a4ef6 MCC |
1526 | if (dev->state & DEV_DISCONNECTED) { |
1527 | em28xx_videodbg("device not present\n"); | |
1528 | mutex_unlock(&dev->lock); | |
1529 | return -ENODEV; | |
1530 | } | |
a6c2ba28 | 1531 | |
195a4ef6 MCC |
1532 | if (dev->state & DEV_MISCONFIGURED) { |
1533 | em28xx_videodbg("device misconfigured; close and open it again\n"); | |
3593cab5 | 1534 | mutex_unlock(&dev->lock); |
195a4ef6 | 1535 | return -EIO; |
9aeb4b05 | 1536 | } |
a6c2ba28 | 1537 | |
195a4ef6 MCC |
1538 | if (dev->io == IO_MMAP) { |
1539 | em28xx_videodbg ("IO method is set to mmap; close and open" | |
1540 | " the device again to choose the read method\n"); | |
3593cab5 | 1541 | mutex_unlock(&dev->lock); |
195a4ef6 | 1542 | return -EINVAL; |
9aeb4b05 | 1543 | } |
a6c2ba28 | 1544 | |
195a4ef6 MCC |
1545 | if (dev->io == IO_NONE) { |
1546 | if (!em28xx_request_buffers(dev, EM28XX_NUM_READ_FRAMES)) { | |
1547 | em28xx_errdev("read failed, not enough memory\n"); | |
1548 | mutex_unlock(&dev->lock); | |
1549 | return -ENOMEM; | |
1550 | } | |
1551 | dev->io = IO_READ; | |
1552 | dev->stream = STREAM_ON; | |
1553 | em28xx_queue_unusedframes(dev); | |
9aeb4b05 | 1554 | } |
a6c2ba28 | 1555 | |
195a4ef6 | 1556 | if (!count) { |
3593cab5 | 1557 | mutex_unlock(&dev->lock); |
9aeb4b05 MCC |
1558 | return 0; |
1559 | } | |
a6c2ba28 | 1560 | |
195a4ef6 MCC |
1561 | if (list_empty(&dev->outqueue)) { |
1562 | if (filp->f_flags & O_NONBLOCK) { | |
1563 | mutex_unlock(&dev->lock); | |
1564 | return -EAGAIN; | |
1565 | } | |
1566 | ret = wait_event_interruptible | |
1567 | (dev->wait_frame, | |
1568 | (!list_empty(&dev->outqueue)) || | |
1569 | (dev->state & DEV_DISCONNECTED)); | |
1570 | if (ret) { | |
1571 | mutex_unlock(&dev->lock); | |
1572 | return ret; | |
1573 | } | |
1574 | if (dev->state & DEV_DISCONNECTED) { | |
1575 | mutex_unlock(&dev->lock); | |
1576 | return -ENODEV; | |
1577 | } | |
1578 | dev->video_bytesread = 0; | |
9aeb4b05 | 1579 | } |
a6c2ba28 | 1580 | |
195a4ef6 | 1581 | f = list_entry(dev->outqueue.prev, struct em28xx_frame_t, frame); |
a6c2ba28 | 1582 | |
195a4ef6 | 1583 | em28xx_queue_unusedframes(dev); |
a225452e | 1584 | |
195a4ef6 MCC |
1585 | if (count > f->buf.length) |
1586 | count = f->buf.length; | |
a6c2ba28 | 1587 | |
195a4ef6 MCC |
1588 | if ((dev->video_bytesread + count) > dev->frame_size) |
1589 | count = dev->frame_size - dev->video_bytesread; | |
a6c2ba28 | 1590 | |
195a4ef6 MCC |
1591 | if (copy_to_user(buf, f->bufmem+dev->video_bytesread, count)) { |
1592 | em28xx_err("Error while copying to user\n"); | |
1593 | return -EFAULT; | |
9aeb4b05 | 1594 | } |
195a4ef6 | 1595 | dev->video_bytesread += count; |
a6c2ba28 | 1596 | |
195a4ef6 MCC |
1597 | if (dev->video_bytesread == dev->frame_size) { |
1598 | spin_lock_irqsave(&dev->queue_lock, lock_flags); | |
1599 | list_for_each_entry(i, &dev->outqueue, frame) | |
1600 | i->state = F_UNUSED; | |
1601 | INIT_LIST_HEAD(&dev->outqueue); | |
1602 | spin_unlock_irqrestore(&dev->queue_lock, lock_flags); | |
a6c2ba28 | 1603 | |
195a4ef6 MCC |
1604 | em28xx_queue_unusedframes(dev); |
1605 | dev->video_bytesread = 0; | |
1606 | } | |
a3a048ce | 1607 | |
195a4ef6 | 1608 | *f_pos += count; |
9aeb4b05 | 1609 | |
195a4ef6 MCC |
1610 | mutex_unlock(&dev->lock); |
1611 | ||
1612 | return count; | |
a6c2ba28 | 1613 | } |
1614 | ||
1615 | /* | |
195a4ef6 MCC |
1616 | * em28xx_v4l2_poll() |
1617 | * will allocate buffers when called for the first time | |
a6c2ba28 | 1618 | */ |
195a4ef6 | 1619 | static unsigned int em28xx_v4l2_poll(struct file *filp, poll_table * wait) |
a6c2ba28 | 1620 | { |
195a4ef6 | 1621 | unsigned int mask = 0; |
a3a048ce | 1622 | struct em28xx_fh *fh = filp->private_data; |
195a4ef6 | 1623 | struct em28xx *dev = fh->dev; |
a6c2ba28 | 1624 | |
195a4ef6 MCC |
1625 | if (unlikely(res_get(fh) < 0)) |
1626 | return POLLERR; | |
a6c2ba28 | 1627 | |
195a4ef6 | 1628 | mutex_lock(&dev->lock); |
a6c2ba28 | 1629 | |
195a4ef6 MCC |
1630 | if (dev->state & DEV_DISCONNECTED) { |
1631 | em28xx_videodbg("device not present\n"); | |
1632 | } else if (dev->state & DEV_MISCONFIGURED) { | |
1633 | em28xx_videodbg("device is misconfigured; close and open it again\n"); | |
1634 | } else { | |
1635 | if (dev->io == IO_NONE) { | |
1636 | if (!em28xx_request_buffers | |
1637 | (dev, EM28XX_NUM_READ_FRAMES)) { | |
1638 | em28xx_warn | |
1639 | ("poll() failed, not enough memory\n"); | |
1640 | } else { | |
1641 | dev->io = IO_READ; | |
1642 | dev->stream = STREAM_ON; | |
1643 | } | |
1644 | } | |
a6c2ba28 | 1645 | |
195a4ef6 MCC |
1646 | if (dev->io == IO_READ) { |
1647 | em28xx_queue_unusedframes(dev); | |
1648 | poll_wait(filp, &dev->wait_frame, wait); | |
a6c2ba28 | 1649 | |
195a4ef6 MCC |
1650 | if (!list_empty(&dev->outqueue)) |
1651 | mask |= POLLIN | POLLRDNORM; | |
a6c2ba28 | 1652 | |
195a4ef6 | 1653 | mutex_unlock(&dev->lock); |
a6c2ba28 | 1654 | |
195a4ef6 | 1655 | return mask; |
9aeb4b05 | 1656 | } |
195a4ef6 | 1657 | } |
a6c2ba28 | 1658 | |
195a4ef6 MCC |
1659 | mutex_unlock(&dev->lock); |
1660 | return POLLERR; | |
1661 | } | |
a6c2ba28 | 1662 | |
195a4ef6 MCC |
1663 | /* |
1664 | * em28xx_v4l2_mmap() | |
1665 | */ | |
1666 | static int em28xx_v4l2_mmap(struct file *filp, struct vm_area_struct *vma) | |
1667 | { | |
1668 | struct em28xx_fh *fh = filp->private_data; | |
1669 | struct em28xx *dev = fh->dev; | |
1670 | unsigned long size = vma->vm_end - vma->vm_start; | |
1671 | unsigned long start = vma->vm_start; | |
1672 | void *pos; | |
1673 | u32 i; | |
a6c2ba28 | 1674 | |
195a4ef6 MCC |
1675 | if (unlikely(res_get(fh) < 0)) |
1676 | return -EBUSY; | |
a6c2ba28 | 1677 | |
195a4ef6 | 1678 | mutex_lock(&dev->lock); |
a6c2ba28 | 1679 | |
195a4ef6 MCC |
1680 | if (dev->state & DEV_DISCONNECTED) { |
1681 | em28xx_videodbg("mmap: device not present\n"); | |
5a80415b | 1682 | mutex_unlock(&dev->lock); |
195a4ef6 | 1683 | return -ENODEV; |
9aeb4b05 | 1684 | } |
a6c2ba28 | 1685 | |
195a4ef6 MCC |
1686 | if (dev->state & DEV_MISCONFIGURED) { |
1687 | em28xx_videodbg ("mmap: Device is misconfigured; close and " | |
1688 | "open it again\n"); | |
1689 | mutex_unlock(&dev->lock); | |
1690 | return -EIO; | |
9aeb4b05 | 1691 | } |
a6c2ba28 | 1692 | |
195a4ef6 MCC |
1693 | if (dev->io != IO_MMAP || !(vma->vm_flags & VM_WRITE)) { |
1694 | mutex_unlock(&dev->lock); | |
1695 | return -EINVAL; | |
9aeb4b05 | 1696 | } |
a6c2ba28 | 1697 | |
195a4ef6 MCC |
1698 | if (size > PAGE_ALIGN(dev->frame[0].buf.length)) |
1699 | size = PAGE_ALIGN(dev->frame[0].buf.length); | |
a6c2ba28 | 1700 | |
195a4ef6 MCC |
1701 | for (i = 0; i < dev->num_frames; i++) { |
1702 | if ((dev->frame[i].buf.m.offset >> PAGE_SHIFT) == vma->vm_pgoff) | |
1703 | break; | |
9aeb4b05 | 1704 | } |
195a4ef6 MCC |
1705 | if (i == dev->num_frames) { |
1706 | em28xx_videodbg("mmap: user supplied mapping address is out of range\n"); | |
1707 | mutex_unlock(&dev->lock); | |
1708 | return -EINVAL; | |
a6c2ba28 | 1709 | } |
a6c2ba28 | 1710 | |
195a4ef6 MCC |
1711 | /* VM_IO is eventually going to replace PageReserved altogether */ |
1712 | vma->vm_flags |= VM_IO; | |
1713 | vma->vm_flags |= VM_RESERVED; /* avoid to swap out this VMA */ | |
a6c2ba28 | 1714 | |
195a4ef6 MCC |
1715 | pos = dev->frame[i].bufmem; |
1716 | while (size > 0) { /* size is page-aligned */ | |
1717 | if (vm_insert_page(vma, start, vmalloc_to_page(pos))) { | |
1718 | em28xx_videodbg("mmap: vm_insert_page failed\n"); | |
1719 | mutex_unlock(&dev->lock); | |
1720 | return -EAGAIN; | |
1721 | } | |
1722 | start += PAGE_SIZE; | |
1723 | pos += PAGE_SIZE; | |
1724 | size -= PAGE_SIZE; | |
a6c2ba28 | 1725 | } |
1726 | ||
195a4ef6 MCC |
1727 | vma->vm_ops = &em28xx_vm_ops; |
1728 | vma->vm_private_data = &dev->frame[i]; | |
a6c2ba28 | 1729 | |
195a4ef6 MCC |
1730 | em28xx_vm_open(vma); |
1731 | mutex_unlock(&dev->lock); | |
1732 | return 0; | |
a6c2ba28 | 1733 | } |
1734 | ||
fa027c2a | 1735 | static const struct file_operations em28xx_v4l_fops = { |
195a4ef6 MCC |
1736 | .owner = THIS_MODULE, |
1737 | .open = em28xx_v4l2_open, | |
1738 | .release = em28xx_v4l2_close, | |
1739 | .read = em28xx_v4l2_read, | |
1740 | .poll = em28xx_v4l2_poll, | |
1741 | .mmap = em28xx_v4l2_mmap, | |
1742 | .ioctl = video_ioctl2, | |
1743 | .llseek = no_llseek, | |
1744 | .compat_ioctl = v4l_compat_ioctl32, | |
1745 | }; | |
17cbe2e5 | 1746 | |
0be43754 MCC |
1747 | static const struct file_operations radio_fops = { |
1748 | .owner = THIS_MODULE, | |
1749 | .open = em28xx_v4l2_open, | |
1750 | .release = em28xx_v4l2_close, | |
1751 | .ioctl = video_ioctl2, | |
1752 | .compat_ioctl = v4l_compat_ioctl32, | |
1753 | .llseek = no_llseek, | |
1754 | }; | |
1755 | ||
195a4ef6 MCC |
1756 | static const struct video_device em28xx_video_template = { |
1757 | .fops = &em28xx_v4l_fops, | |
1758 | .release = video_device_release, | |
1759 | ||
1760 | .minor = -1, | |
1761 | .vidioc_querycap = vidioc_querycap, | |
1762 | .vidioc_enum_fmt_cap = vidioc_enum_fmt_cap, | |
1763 | .vidioc_g_fmt_cap = vidioc_g_fmt_cap, | |
1764 | .vidioc_try_fmt_cap = vidioc_try_fmt_cap, | |
1765 | .vidioc_s_fmt_cap = vidioc_s_fmt_cap, | |
1766 | .vidioc_g_audio = vidioc_g_audio, | |
1767 | .vidioc_s_audio = vidioc_s_audio, | |
1768 | .vidioc_cropcap = vidioc_cropcap, | |
1769 | ||
1770 | .vidioc_g_fmt_vbi_capture = vidioc_g_fmt_vbi_capture, | |
1771 | .vidioc_try_fmt_vbi_capture = vidioc_try_set_vbi_capture, | |
1772 | .vidioc_s_fmt_vbi_capture = vidioc_try_set_vbi_capture, | |
1773 | ||
1774 | .vidioc_reqbufs = vidioc_reqbufs, | |
1775 | .vidioc_querybuf = vidioc_querybuf, | |
1776 | .vidioc_qbuf = vidioc_qbuf, | |
1777 | .vidioc_dqbuf = vidioc_dqbuf, | |
1778 | .vidioc_s_std = vidioc_s_std, | |
1779 | .vidioc_enum_input = vidioc_enum_input, | |
1780 | .vidioc_g_input = vidioc_g_input, | |
1781 | .vidioc_s_input = vidioc_s_input, | |
1782 | .vidioc_queryctrl = vidioc_queryctrl, | |
1783 | .vidioc_g_ctrl = vidioc_g_ctrl, | |
1784 | .vidioc_s_ctrl = vidioc_s_ctrl, | |
1785 | .vidioc_streamon = vidioc_streamon, | |
1786 | .vidioc_streamoff = vidioc_streamoff, | |
1787 | .vidioc_g_tuner = vidioc_g_tuner, | |
1788 | .vidioc_s_tuner = vidioc_s_tuner, | |
1789 | .vidioc_g_frequency = vidioc_g_frequency, | |
1790 | .vidioc_s_frequency = vidioc_s_frequency, | |
1e7ad56f MCC |
1791 | #ifdef CONFIG_VIDEO_ADV_DEBUG |
1792 | .vidioc_g_register = vidioc_g_register, | |
1793 | .vidioc_s_register = vidioc_s_register, | |
1794 | #endif | |
195a4ef6 MCC |
1795 | |
1796 | .tvnorms = V4L2_STD_ALL, | |
7d497f8a | 1797 | .current_norm = V4L2_STD_PAL, |
a6c2ba28 | 1798 | }; |
1799 | ||
0be43754 MCC |
1800 | static struct video_device em28xx_radio_template = { |
1801 | .name = "em28xx-radio", | |
1802 | .type = VID_TYPE_TUNER, | |
1803 | .fops = &radio_fops, | |
1804 | .minor = -1, | |
1805 | .vidioc_querycap = radio_querycap, | |
1806 | .vidioc_g_tuner = radio_g_tuner, | |
1807 | .vidioc_enum_input = radio_enum_input, | |
1808 | .vidioc_g_audio = radio_g_audio, | |
1809 | .vidioc_s_tuner = radio_s_tuner, | |
1810 | .vidioc_s_audio = radio_s_audio, | |
1811 | .vidioc_s_input = radio_s_input, | |
1812 | .vidioc_queryctrl = radio_queryctrl, | |
1813 | .vidioc_g_ctrl = vidioc_g_ctrl, | |
1814 | .vidioc_s_ctrl = vidioc_s_ctrl, | |
1815 | .vidioc_g_frequency = vidioc_g_frequency, | |
1816 | .vidioc_s_frequency = vidioc_s_frequency, | |
1e7ad56f MCC |
1817 | #ifdef CONFIG_VIDEO_ADV_DEBUG |
1818 | .vidioc_g_register = vidioc_g_register, | |
1819 | .vidioc_s_register = vidioc_s_register, | |
1820 | #endif | |
0be43754 MCC |
1821 | }; |
1822 | ||
a6c2ba28 | 1823 | /******************************** usb interface *****************************************/ |
1824 | ||
6d79468d MCC |
1825 | |
1826 | static LIST_HEAD(em28xx_extension_devlist); | |
1827 | static DEFINE_MUTEX(em28xx_extension_devlist_lock); | |
1828 | ||
1829 | int em28xx_register_extension(struct em28xx_ops *ops) | |
1830 | { | |
1831 | struct em28xx *h, *dev = NULL; | |
1832 | ||
1833 | list_for_each_entry(h, &em28xx_devlist, devlist) | |
1834 | dev = h; | |
1835 | ||
1836 | mutex_lock(&em28xx_extension_devlist_lock); | |
1837 | list_add_tail(&ops->next, &em28xx_extension_devlist); | |
1838 | if (dev) | |
1839 | ops->init(dev); | |
1840 | ||
1841 | printk(KERN_INFO "Em28xx: Initialized (%s) extension\n", ops->name); | |
1842 | mutex_unlock(&em28xx_extension_devlist_lock); | |
1843 | ||
1844 | return 0; | |
1845 | } | |
1846 | EXPORT_SYMBOL(em28xx_register_extension); | |
1847 | ||
1848 | void em28xx_unregister_extension(struct em28xx_ops *ops) | |
1849 | { | |
1850 | struct em28xx *h, *dev = NULL; | |
1851 | ||
1852 | list_for_each_entry(h, &em28xx_devlist, devlist) | |
1853 | dev = h; | |
1854 | ||
1855 | if (dev) | |
1856 | ops->fini(dev); | |
1857 | ||
1858 | mutex_lock(&em28xx_extension_devlist_lock); | |
1859 | printk(KERN_INFO "Em28xx: Removed (%s) extension\n", ops->name); | |
1860 | list_del(&ops->next); | |
1861 | mutex_unlock(&em28xx_extension_devlist_lock); | |
1862 | } | |
1863 | EXPORT_SYMBOL(em28xx_unregister_extension); | |
1864 | ||
532fe652 AB |
1865 | static struct video_device *em28xx_vdev_init(struct em28xx *dev, |
1866 | const struct video_device *template, | |
1867 | const int type, | |
1868 | const char *type_name) | |
0be43754 MCC |
1869 | { |
1870 | struct video_device *vfd; | |
1871 | ||
1872 | vfd = video_device_alloc(); | |
1873 | if (NULL == vfd) | |
1874 | return NULL; | |
1875 | *vfd = *template; | |
1876 | vfd->minor = -1; | |
1877 | vfd->dev = &dev->udev->dev; | |
1878 | vfd->release = video_device_release; | |
1879 | vfd->type = type; | |
1880 | ||
1881 | snprintf(vfd->name, sizeof(vfd->name), "%s %s", | |
1882 | dev->name, type_name); | |
1883 | ||
1884 | return vfd; | |
1885 | } | |
1886 | ||
1887 | ||
a6c2ba28 | 1888 | /* |
3acf2809 | 1889 | * em28xx_init_dev() |
a6c2ba28 | 1890 | * allocates and inits the device structs, registers i2c bus and v4l device |
1891 | */ | |
3acf2809 | 1892 | static int em28xx_init_dev(struct em28xx **devhandle, struct usb_device *udev, |
03910cc3 | 1893 | int minor) |
a6c2ba28 | 1894 | { |
6d79468d | 1895 | struct em28xx_ops *ops = NULL; |
3acf2809 | 1896 | struct em28xx *dev = *devhandle; |
a6c2ba28 | 1897 | int retval = -ENOMEM; |
7d497f8a | 1898 | int errCode; |
a6c2ba28 | 1899 | unsigned int maxh, maxw; |
a6c2ba28 | 1900 | |
a6c2ba28 | 1901 | dev->udev = udev; |
3593cab5 | 1902 | mutex_init(&dev->lock); |
a3a048ce | 1903 | spin_lock_init(&dev->queue_lock); |
a6c2ba28 | 1904 | init_waitqueue_head(&dev->open); |
a3a048ce MCC |
1905 | init_waitqueue_head(&dev->wait_frame); |
1906 | init_waitqueue_head(&dev->wait_stream); | |
a6c2ba28 | 1907 | |
3acf2809 MCC |
1908 | dev->em28xx_write_regs = em28xx_write_regs; |
1909 | dev->em28xx_read_reg = em28xx_read_reg; | |
1910 | dev->em28xx_read_reg_req_len = em28xx_read_reg_req_len; | |
1911 | dev->em28xx_write_regs_req = em28xx_write_regs_req; | |
1912 | dev->em28xx_read_reg_req = em28xx_read_reg_req; | |
fad7b958 | 1913 | dev->is_em2800 = em28xx_boards[dev->model].is_em2800; |
a6c2ba28 | 1914 | |
d7448a8d MCC |
1915 | errCode = em28xx_read_reg(dev, CHIPID_REG); |
1916 | if (errCode >= 0) | |
1917 | em28xx_info("em28xx chip ID = %d\n", errCode); | |
1918 | ||
a94e95b4 | 1919 | em28xx_pre_card_setup(dev); |
03910cc3 | 1920 | |
3acf2809 | 1921 | errCode = em28xx_config(dev); |
a6c2ba28 | 1922 | if (errCode) { |
3acf2809 | 1923 | em28xx_errdev("error configuring device\n"); |
03910cc3 | 1924 | em28xx_devused &= ~(1<<dev->devno); |
7c908fbb | 1925 | kfree(dev); |
a6c2ba28 | 1926 | return -ENOMEM; |
1927 | } | |
1928 | ||
a6c2ba28 | 1929 | /* register i2c bus */ |
3acf2809 | 1930 | em28xx_i2c_register(dev); |
a6c2ba28 | 1931 | |
1932 | /* Do board specific init and eeprom reading */ | |
3acf2809 | 1933 | em28xx_card_setup(dev); |
a6c2ba28 | 1934 | |
3abee53e MCC |
1935 | /* Configure audio */ |
1936 | em28xx_audio_analog_set(dev); | |
1937 | ||
a6c2ba28 | 1938 | /* configure the device */ |
3acf2809 | 1939 | em28xx_config_i2c(dev); |
a6c2ba28 | 1940 | |
7d497f8a MCC |
1941 | /* set default norm */ |
1942 | dev->norm = em28xx_video_template.current_norm; | |
03910cc3 MCC |
1943 | |
1944 | maxw = norm_maxw(dev); | |
1945 | maxh = norm_maxh(dev); | |
1946 | ||
1947 | /* set default image size */ | |
1948 | dev->width = maxw; | |
1949 | dev->height = maxh; | |
1950 | dev->interlaced = EM28XX_INTERLACED_DEFAULT; | |
1951 | dev->field_size = dev->width * dev->height; | |
1952 | dev->frame_size = | |
1953 | dev->interlaced ? dev->field_size << 1 : dev->field_size; | |
1954 | dev->bytesperline = dev->width * 2; | |
1955 | dev->hscale = 0; | |
1956 | dev->vscale = 0; | |
1957 | dev->ctl_input = 2; | |
1958 | ||
3acf2809 | 1959 | errCode = em28xx_config(dev); |
a6c2ba28 | 1960 | |
0be43754 MCC |
1961 | list_add_tail(&dev->devlist, &em28xx_devlist); |
1962 | ||
195a4ef6 | 1963 | /* allocate and fill video video_device struct */ |
0be43754 MCC |
1964 | dev->vdev = em28xx_vdev_init(dev, &em28xx_video_template, |
1965 | VID_TYPE_CAPTURE, "video"); | |
a6c2ba28 | 1966 | if (NULL == dev->vdev) { |
3acf2809 | 1967 | em28xx_errdev("cannot allocate video_device.\n"); |
0be43754 | 1968 | goto fail_unreg; |
e5589bef | 1969 | } |
ed086314 | 1970 | if (dev->tuner_type != TUNER_ABSENT) |
195a4ef6 | 1971 | dev->vdev->type |= VID_TYPE_TUNER; |
0be43754 MCC |
1972 | |
1973 | /* register v4l2 video video_device */ | |
1974 | retval = video_register_device(dev->vdev, VFL_TYPE_GRABBER, | |
1975 | video_nr[dev->devno]); | |
1976 | if (retval) { | |
1977 | em28xx_errdev("unable to register video device (error=%i).\n", | |
1978 | retval); | |
1979 | goto fail_unreg; | |
1980 | } | |
e5589bef | 1981 | |
195a4ef6 | 1982 | /* Allocate and fill vbi video_device struct */ |
0be43754 MCC |
1983 | dev->vbi_dev = em28xx_vdev_init(dev, &em28xx_video_template, |
1984 | VFL_TYPE_VBI, "vbi"); | |
1985 | /* register v4l2 vbi video_device */ | |
1986 | if (video_register_device(dev->vbi_dev, VFL_TYPE_VBI, | |
1987 | vbi_nr[dev->devno]) < 0) { | |
1988 | em28xx_errdev("unable to register vbi device\n"); | |
1989 | retval = -ENODEV; | |
1990 | goto fail_unreg; | |
1991 | } | |
1992 | ||
1993 | if (em28xx_boards[dev->model].radio.type == EM28XX_RADIO) { | |
1994 | dev->radio_dev = em28xx_vdev_init(dev, &em28xx_radio_template, | |
1995 | VFL_TYPE_RADIO, "radio"); | |
1996 | if (NULL == dev->radio_dev) { | |
1997 | em28xx_errdev("cannot allocate video_device.\n"); | |
1998 | goto fail_unreg; | |
1999 | } | |
2000 | retval = video_register_device(dev->radio_dev, VFL_TYPE_RADIO, | |
2001 | radio_nr[dev->devno]); | |
2002 | if (retval < 0) { | |
2003 | em28xx_errdev("can't register radio device\n"); | |
2004 | goto fail_unreg; | |
2005 | } | |
2006 | em28xx_info("Registered radio device as /dev/radio%d\n", | |
2007 | dev->radio_dev->minor & 0x1f); | |
a6c2ba28 | 2008 | } |
e5589bef | 2009 | |
a6c2ba28 | 2010 | |
5a80415b SS |
2011 | if (dev->has_msp34xx) { |
2012 | /* Send a reset to other chips via gpio */ | |
2013 | em28xx_write_regs_req(dev, 0x00, 0x08, "\xf7", 1); | |
2014 | msleep(3); | |
2015 | em28xx_write_regs_req(dev, 0x00, 0x08, "\xff", 1); | |
2016 | msleep(3); | |
5a80415b | 2017 | } |
195a4ef6 | 2018 | |
5a80415b SS |
2019 | video_mux(dev, 0); |
2020 | ||
e5589bef MCC |
2021 | em28xx_info("V4L2 device registered as /dev/video%d and /dev/vbi%d\n", |
2022 | dev->vdev->minor-MINOR_VFL_TYPE_GRABBER_MIN, | |
2023 | dev->vbi_dev->minor-MINOR_VFL_TYPE_VBI_MIN); | |
a6c2ba28 | 2024 | |
6d79468d MCC |
2025 | mutex_lock(&em28xx_extension_devlist_lock); |
2026 | if (!list_empty(&em28xx_extension_devlist)) { | |
2027 | list_for_each_entry(ops, &em28xx_extension_devlist, next) { | |
2028 | if (ops->id) | |
2029 | ops->init(dev); | |
2030 | } | |
2031 | } | |
2032 | mutex_unlock(&em28xx_extension_devlist_lock); | |
2033 | ||
a6c2ba28 | 2034 | return 0; |
0be43754 MCC |
2035 | |
2036 | fail_unreg: | |
2037 | em28xx_release_resources(dev); | |
2038 | mutex_unlock(&dev->lock); | |
2039 | kfree(dev); | |
2040 | return retval; | |
a6c2ba28 | 2041 | } |
2042 | ||
d7448a8d MCC |
2043 | #if defined(CONFIG_MODULES) && defined(MODULE) |
2044 | static void request_module_async(struct work_struct *work) | |
2045 | { | |
2046 | struct em28xx *dev = container_of(work, | |
2047 | struct em28xx, request_module_wk); | |
2048 | ||
3f4dfe2a MCC |
2049 | if (dev->has_audio_class) |
2050 | request_module("snd-usb-audio"); | |
2051 | else | |
d7448a8d MCC |
2052 | request_module("em28xx-alsa"); |
2053 | } | |
2054 | ||
2055 | static void request_modules(struct em28xx *dev) | |
2056 | { | |
2057 | INIT_WORK(&dev->request_module_wk, request_module_async); | |
2058 | schedule_work(&dev->request_module_wk); | |
2059 | } | |
2060 | #else | |
2061 | #define request_modules(dev) | |
2062 | #endif /* CONFIG_MODULES */ | |
2063 | ||
a6c2ba28 | 2064 | /* |
3acf2809 | 2065 | * em28xx_usb_probe() |
a6c2ba28 | 2066 | * checks for supported devices |
2067 | */ | |
3acf2809 | 2068 | static int em28xx_usb_probe(struct usb_interface *interface, |
a6c2ba28 | 2069 | const struct usb_device_id *id) |
2070 | { | |
2071 | const struct usb_endpoint_descriptor *endpoint; | |
2072 | struct usb_device *udev; | |
9d4d9c05 | 2073 | struct usb_interface *uif; |
3acf2809 | 2074 | struct em28xx *dev = NULL; |
a6c2ba28 | 2075 | int retval = -ENODEV; |
03910cc3 | 2076 | int i, nr, ifnum; |
a6c2ba28 | 2077 | |
2078 | udev = usb_get_dev(interface_to_usbdev(interface)); | |
d5e52653 MCC |
2079 | ifnum = interface->altsetting[0].desc.bInterfaceNumber; |
2080 | ||
e5589bef MCC |
2081 | /* Check to see next free device and mark as used */ |
2082 | nr=find_first_zero_bit(&em28xx_devused,EM28XX_MAXBOARDS); | |
2083 | em28xx_devused|=1<<nr; | |
a6c2ba28 | 2084 | |
596d92d5 | 2085 | /* Don't register audio interfaces */ |
91cad0f2 | 2086 | if (interface->altsetting[0].desc.bInterfaceClass == USB_CLASS_AUDIO) { |
3acf2809 | 2087 | em28xx_err(DRIVER_NAME " audio device (%04x:%04x): interface %i, class %i\n", |
91cad0f2 MCC |
2088 | udev->descriptor.idVendor,udev->descriptor.idProduct, |
2089 | ifnum, | |
2090 | interface->altsetting[0].desc.bInterfaceClass); | |
e5589bef MCC |
2091 | |
2092 | em28xx_devused&=~(1<<nr); | |
596d92d5 | 2093 | return -ENODEV; |
91cad0f2 MCC |
2094 | } |
2095 | ||
3acf2809 | 2096 | em28xx_err(DRIVER_NAME " new video device (%04x:%04x): interface %i, class %i\n", |
91cad0f2 MCC |
2097 | udev->descriptor.idVendor,udev->descriptor.idProduct, |
2098 | ifnum, | |
2099 | interface->altsetting[0].desc.bInterfaceClass); | |
596d92d5 | 2100 | |
d5e52653 MCC |
2101 | endpoint = &interface->cur_altsetting->endpoint[1].desc; |
2102 | ||
59c51591 | 2103 | /* check if the device has the iso in endpoint at the correct place */ |
a6c2ba28 | 2104 | if ((endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) != |
2105 | USB_ENDPOINT_XFER_ISOC) { | |
3acf2809 | 2106 | em28xx_err(DRIVER_NAME " probing error: endpoint is non-ISO endpoint!\n"); |
e5589bef | 2107 | em28xx_devused&=~(1<<nr); |
a6c2ba28 | 2108 | return -ENODEV; |
2109 | } | |
2110 | if ((endpoint->bEndpointAddress & USB_ENDPOINT_DIR_MASK) == USB_DIR_OUT) { | |
3acf2809 | 2111 | em28xx_err(DRIVER_NAME " probing error: endpoint is ISO OUT endpoint!\n"); |
e5589bef | 2112 | em28xx_devused&=~(1<<nr); |
a6c2ba28 | 2113 | return -ENODEV; |
2114 | } | |
2115 | ||
19478843 | 2116 | if (nr >= EM28XX_MAXBOARDS) { |
9d4d9c05 | 2117 | printk (DRIVER_NAME ": Supports only %i em28xx boards.\n",EM28XX_MAXBOARDS); |
e5589bef | 2118 | em28xx_devused&=~(1<<nr); |
596d92d5 MCC |
2119 | return -ENOMEM; |
2120 | } | |
2121 | ||
2122 | /* allocate memory for our device state and initialize it */ | |
7408187d | 2123 | dev = kzalloc(sizeof(*dev), GFP_KERNEL); |
596d92d5 | 2124 | if (dev == NULL) { |
3acf2809 | 2125 | em28xx_err(DRIVER_NAME ": out of memory!\n"); |
e5589bef | 2126 | em28xx_devused&=~(1<<nr); |
596d92d5 MCC |
2127 | return -ENOMEM; |
2128 | } | |
596d92d5 | 2129 | |
e5589bef | 2130 | snprintf(dev->name, 29, "em28xx #%d", nr); |
03910cc3 MCC |
2131 | dev->devno = nr; |
2132 | dev->model = id->driver_info; | |
e5589bef | 2133 | |
d7448a8d MCC |
2134 | /* Checks if audio is provided by some interface */ |
2135 | for (i = 0; i < udev->config->desc.bNumInterfaces; i++) { | |
2136 | uif = udev->config->interface[i]; | |
2137 | if (uif->altsetting[0].desc.bInterfaceClass == USB_CLASS_AUDIO) { | |
2138 | dev->has_audio_class = 1; | |
2139 | break; | |
2140 | } | |
2141 | } | |
2142 | ||
2143 | printk(KERN_INFO DRIVER_NAME " %s usb audio class\n", | |
2144 | dev->has_audio_class ? "Has" : "Doesn't have"); | |
2145 | ||
9d4d9c05 MCC |
2146 | /* compute alternate max packet sizes */ |
2147 | uif = udev->actconfig->interface[0]; | |
2148 | ||
2149 | dev->num_alt=uif->num_altsetting; | |
e5589bef | 2150 | em28xx_info("Alternate settings: %i\n",dev->num_alt); |
9d4d9c05 MCC |
2151 | // dev->alt_max_pkt_size = kmalloc(sizeof(*dev->alt_max_pkt_size)* |
2152 | dev->alt_max_pkt_size = kmalloc(32* | |
2153 | dev->num_alt,GFP_KERNEL); | |
2154 | if (dev->alt_max_pkt_size == NULL) { | |
e5589bef MCC |
2155 | em28xx_errdev("out of memory!\n"); |
2156 | em28xx_devused&=~(1<<nr); | |
1207cf84 | 2157 | kfree(dev); |
9d4d9c05 MCC |
2158 | return -ENOMEM; |
2159 | } | |
2160 | ||
2161 | for (i = 0; i < dev->num_alt ; i++) { | |
2162 | u16 tmp = le16_to_cpu(uif->altsetting[i].endpoint[1].desc. | |
2163 | wMaxPacketSize); | |
2164 | dev->alt_max_pkt_size[i] = | |
2165 | (tmp & 0x07ff) * (((tmp & 0x1800) >> 11) + 1); | |
e5589bef | 2166 | em28xx_info("Alternate setting %i, max size= %i\n",i, |
9d4d9c05 MCC |
2167 | dev->alt_max_pkt_size[i]); |
2168 | } | |
2169 | ||
3acf2809 | 2170 | if ((card[nr]>=0)&&(card[nr]<em28xx_bcount)) |
03910cc3 | 2171 | dev->model = card[nr]; |
596d92d5 | 2172 | |
a6c2ba28 | 2173 | /* allocate device struct */ |
03910cc3 | 2174 | retval = em28xx_init_dev(&dev, udev, nr); |
a6c2ba28 | 2175 | if (retval) |
2176 | return retval; | |
2177 | ||
03910cc3 | 2178 | em28xx_info("Found %s\n", em28xx_boards[dev->model].name); |
a6c2ba28 | 2179 | |
2180 | /* save our data pointer in this interface device */ | |
2181 | usb_set_intfdata(interface, dev); | |
d7448a8d MCC |
2182 | |
2183 | request_modules(dev); | |
2184 | ||
a6c2ba28 | 2185 | return 0; |
2186 | } | |
2187 | ||
2188 | /* | |
3acf2809 | 2189 | * em28xx_usb_disconnect() |
a6c2ba28 | 2190 | * called when the device gets diconencted |
2191 | * video device will be unregistered on v4l2_close in case it is still open | |
2192 | */ | |
3acf2809 | 2193 | static void em28xx_usb_disconnect(struct usb_interface *interface) |
a6c2ba28 | 2194 | { |
5a80415b | 2195 | struct em28xx *dev; |
6d79468d | 2196 | struct em28xx_ops *ops = NULL; |
5a80415b SS |
2197 | |
2198 | dev = usb_get_intfdata(interface); | |
a6c2ba28 | 2199 | usb_set_intfdata(interface, NULL); |
2200 | ||
2201 | if (!dev) | |
2202 | return; | |
2203 | ||
5a80415b | 2204 | em28xx_info("disconnecting %s\n", dev->vdev->name); |
a6c2ba28 | 2205 | |
5a80415b | 2206 | /* wait until all current v4l2 io is finished then deallocate resources */ |
3593cab5 | 2207 | mutex_lock(&dev->lock); |
a6c2ba28 | 2208 | |
a6c2ba28 | 2209 | wake_up_interruptible_all(&dev->open); |
2210 | ||
2211 | if (dev->users) { | |
3acf2809 | 2212 | em28xx_warn |
a6c2ba28 | 2213 | ("device /dev/video%d is open! Deregistration and memory " |
e5589bef MCC |
2214 | "deallocation are deferred on close.\n", |
2215 | dev->vdev->minor-MINOR_VFL_TYPE_GRABBER_MIN); | |
2216 | ||
a6c2ba28 | 2217 | dev->state |= DEV_MISCONFIGURED; |
3acf2809 | 2218 | em28xx_uninit_isoc(dev); |
a6c2ba28 | 2219 | dev->state |= DEV_DISCONNECTED; |
2220 | wake_up_interruptible(&dev->wait_frame); | |
2221 | wake_up_interruptible(&dev->wait_stream); | |
2222 | } else { | |
2223 | dev->state |= DEV_DISCONNECTED; | |
3acf2809 | 2224 | em28xx_release_resources(dev); |
a6c2ba28 | 2225 | } |
3593cab5 | 2226 | mutex_unlock(&dev->lock); |
a6c2ba28 | 2227 | |
6d79468d MCC |
2228 | mutex_lock(&em28xx_extension_devlist_lock); |
2229 | if (!list_empty(&em28xx_extension_devlist)) { | |
2230 | list_for_each_entry(ops, &em28xx_extension_devlist, next) { | |
2231 | ops->fini(dev); | |
2232 | } | |
2233 | } | |
2234 | mutex_unlock(&em28xx_extension_devlist_lock); | |
2235 | ||
9d4d9c05 MCC |
2236 | if (!dev->users) { |
2237 | kfree(dev->alt_max_pkt_size); | |
a6c2ba28 | 2238 | kfree(dev); |
9d4d9c05 | 2239 | } |
a6c2ba28 | 2240 | } |
2241 | ||
3acf2809 | 2242 | static struct usb_driver em28xx_usb_driver = { |
3acf2809 MCC |
2243 | .name = "em28xx", |
2244 | .probe = em28xx_usb_probe, | |
2245 | .disconnect = em28xx_usb_disconnect, | |
2246 | .id_table = em28xx_id_table, | |
a6c2ba28 | 2247 | }; |
2248 | ||
3acf2809 | 2249 | static int __init em28xx_module_init(void) |
a6c2ba28 | 2250 | { |
2251 | int result; | |
2252 | ||
2253 | printk(KERN_INFO DRIVER_NAME " v4l2 driver version %d.%d.%d loaded\n", | |
3acf2809 MCC |
2254 | (EM28XX_VERSION_CODE >> 16) & 0xff, |
2255 | (EM28XX_VERSION_CODE >> 8) & 0xff, EM28XX_VERSION_CODE & 0xff); | |
a6c2ba28 | 2256 | #ifdef SNAPSHOT |
2257 | printk(KERN_INFO DRIVER_NAME " snapshot date %04d-%02d-%02d\n", | |
2258 | SNAPSHOT / 10000, (SNAPSHOT / 100) % 100, SNAPSHOT % 100); | |
2259 | #endif | |
2260 | ||
2261 | /* register this driver with the USB subsystem */ | |
3acf2809 | 2262 | result = usb_register(&em28xx_usb_driver); |
a6c2ba28 | 2263 | if (result) |
3acf2809 | 2264 | em28xx_err(DRIVER_NAME |
a6c2ba28 | 2265 | " usb_register failed. Error number %d.\n", result); |
2266 | ||
2267 | return result; | |
2268 | } | |
2269 | ||
3acf2809 | 2270 | static void __exit em28xx_module_exit(void) |
a6c2ba28 | 2271 | { |
2272 | /* deregister this driver with the USB subsystem */ | |
3acf2809 | 2273 | usb_deregister(&em28xx_usb_driver); |
a6c2ba28 | 2274 | } |
2275 | ||
3acf2809 MCC |
2276 | module_init(em28xx_module_init); |
2277 | module_exit(em28xx_module_exit); |