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V4L/DVB (7235): tuner-simple: fix a buffer overflow
[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / media / video / cx23885 / cx23885-video.c
CommitLineData
e47f30b1
ST		 1/*
2 * Driver for the Conexant CX23885 PCIe bridge
3 *
4 * Copyright (c) 2007 Steven Toth <stoth@hauppauge.com>
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 *
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
20 */
21
22#include <linux/init.h>
23#include <linux/list.h>
24#include <linux/module.h>
25#include <linux/moduleparam.h>
26#include <linux/kmod.h>
27#include <linux/kernel.h>
28#include <linux/slab.h>
29#include <linux/interrupt.h>
30#include <linux/delay.h>
31#include <linux/kthread.h>
32#include <asm/div64.h>
33
34#include "cx23885.h"
35#include <media/v4l2-common.h>
36
37#ifdef CONFIG_VIDEO_V4L1_COMPAT
38/* Include V4L1 specific functions. Should be removed soon */
39#include <linux/videodev.h>
40#endif
41
42MODULE_DESCRIPTION("v4l2 driver module for cx23885 based TV cards");
43MODULE_AUTHOR("Steven Toth <stoth@hauppauge.com>");
44MODULE_LICENSE("GPL");
45
46/* ------------------------------------------------------------------ */
47
48static unsigned int video_nr[] = {[0 ... (CX23885_MAXBOARDS - 1)] = UNSET };
49static unsigned int vbi_nr[] = {[0 ... (CX23885_MAXBOARDS - 1)] = UNSET };
50static unsigned int radio_nr[] = {[0 ... (CX23885_MAXBOARDS - 1)] = UNSET };
51
52module_param_array(video_nr, int, NULL, 0444);
53module_param_array(vbi_nr, int, NULL, 0444);
54module_param_array(radio_nr, int, NULL, 0444);
55
56MODULE_PARM_DESC(video_nr, "video device numbers");
57MODULE_PARM_DESC(vbi_nr, "vbi device numbers");
58MODULE_PARM_DESC(radio_nr, "radio device numbers");
59
4513fc69 60static unsigned int video_debug;
e47f30b1
ST		 61module_param(video_debug, int, 0644);
62MODULE_PARM_DESC(video_debug, "enable debug messages [video]");
63
4513fc69 64static unsigned int irq_debug;
e47f30b1
ST		 65module_param(irq_debug, int, 0644);
66MODULE_PARM_DESC(irq_debug, "enable debug messages [IRQ handler]");
67
68static unsigned int vid_limit = 16;
69module_param(vid_limit, int, 0644);
70MODULE_PARM_DESC(vid_limit, "capture memory limit in megabytes");
71
72#define dprintk(level, fmt, arg...)\
4513fc69
ST		 73 do { if (video_debug >= level)\
74 printk(KERN_DEBUG "%s/0: " fmt, dev->name, ## arg);\
75 } while (0)
e47f30b1
ST		 76
77/* ------------------------------------------------------------------- */
78/* static data */
79
80#define FORMAT_FLAGS_PACKED 0x01
81
82static struct cx23885_fmt formats[] = {
83 {
84 .name = "8 bpp, gray",
85 .fourcc = V4L2_PIX_FMT_GREY,
86 .depth = 8,
87 .flags = FORMAT_FLAGS_PACKED,
88 }, {
89 .name = "15 bpp RGB, le",
90 .fourcc = V4L2_PIX_FMT_RGB555,
91 .depth = 16,
92 .flags = FORMAT_FLAGS_PACKED,
93 }, {
94 .name = "15 bpp RGB, be",
95 .fourcc = V4L2_PIX_FMT_RGB555X,
96 .depth = 16,
97 .flags = FORMAT_FLAGS_PACKED,
98 }, {
99 .name = "16 bpp RGB, le",
100 .fourcc = V4L2_PIX_FMT_RGB565,
101 .depth = 16,
102 .flags = FORMAT_FLAGS_PACKED,
103 }, {
104 .name = "16 bpp RGB, be",
105 .fourcc = V4L2_PIX_FMT_RGB565X,
106 .depth = 16,
107 .flags = FORMAT_FLAGS_PACKED,
108 }, {
109 .name = "24 bpp RGB, le",
110 .fourcc = V4L2_PIX_FMT_BGR24,
111 .depth = 24,
112 .flags = FORMAT_FLAGS_PACKED,
113 }, {
114 .name = "32 bpp RGB, le",
115 .fourcc = V4L2_PIX_FMT_BGR32,
116 .depth = 32,
117 .flags = FORMAT_FLAGS_PACKED,
118 }, {
119 .name = "32 bpp RGB, be",
120 .fourcc = V4L2_PIX_FMT_RGB32,
121 .depth = 32,
122 .flags = FORMAT_FLAGS_PACKED,
123 }, {
124 .name = "4:2:2, packed, YUYV",
125 .fourcc = V4L2_PIX_FMT_YUYV,
126 .depth = 16,
127 .flags = FORMAT_FLAGS_PACKED,
128 }, {
129 .name = "4:2:2, packed, UYVY",
130 .fourcc = V4L2_PIX_FMT_UYVY,
131 .depth = 16,
132 .flags = FORMAT_FLAGS_PACKED,
133 },
134};
135
136static struct cx23885_fmt *format_by_fourcc(unsigned int fourcc)
137{
138 unsigned int i;
139
140 for (i = 0; i < ARRAY_SIZE(formats); i++)
141 if (formats[i].fourcc == fourcc)
142 return formats+i;
143
144 printk(KERN_ERR "%s(0x%08x) NOT FOUND\n", __FUNCTION__, fourcc);
145 return NULL;
146}
147
148/* ------------------------------------------------------------------- */
149
150static const struct v4l2_queryctrl no_ctl = {
151 .name = "42",
152 .flags = V4L2_CTRL_FLAG_DISABLED,
153};
154
155static struct cx23885_ctrl cx23885_ctls[] = {
156 /* --- video --- */
157 {
158 .v = {
159 .id = V4L2_CID_BRIGHTNESS,
160 .name = "Brightness",
161 .minimum = 0x00,
162 .maximum = 0xff,
163 .step = 1,
164 .default_value = 0x7f,
165 .type = V4L2_CTRL_TYPE_INTEGER,
166 },
167 .off = 128,
168 .reg = LUMA_CTRL,
169 .mask = 0x00ff,
170 .shift = 0,
171 }, {
172 .v = {
173 .id = V4L2_CID_CONTRAST,
174 .name = "Contrast",
175 .minimum = 0,
176 .maximum = 0xff,
177 .step = 1,
178 .default_value = 0x3f,
179 .type = V4L2_CTRL_TYPE_INTEGER,
180 },
181 .off = 0,
182 .reg = LUMA_CTRL,
183 .mask = 0xff00,
184 .shift = 8,
185 }, {
186 .v = {
187 .id = V4L2_CID_HUE,
188 .name = "Hue",
189 .minimum = 0,
190 .maximum = 0xff,
191 .step = 1,
192 .default_value = 0x7f,
193 .type = V4L2_CTRL_TYPE_INTEGER,
194 },
195 .off = 128,
196 .reg = CHROMA_CTRL,
197 .mask = 0xff0000,
198 .shift = 16,
199 }, {
200 /* strictly, this only describes only U saturation.
201 * V saturation is handled specially through code.
202 */
203 .v = {
204 .id = V4L2_CID_SATURATION,
205 .name = "Saturation",
206 .minimum = 0,
207 .maximum = 0xff,
208 .step = 1,
209 .default_value = 0x7f,
210 .type = V4L2_CTRL_TYPE_INTEGER,
211 },
212 .off = 0,
213 .reg = CHROMA_CTRL,
214 .mask = 0x00ff,
215 .shift = 0,
216 }, {
217 /* --- audio --- */
218 .v = {
219 .id = V4L2_CID_AUDIO_MUTE,
220 .name = "Mute",
221 .minimum = 0,
222 .maximum = 1,
223 .default_value = 1,
224 .type = V4L2_CTRL_TYPE_BOOLEAN,
225 },
226 .reg = PATH1_CTL1,
227 .mask = (0x1f << 24),
228 .shift = 24,
229 }, {
230 .v = {
231 .id = V4L2_CID_AUDIO_VOLUME,
232 .name = "Volume",
233 .minimum = 0,
234 .maximum = 0x3f,
235 .step = 1,
236 .default_value = 0x3f,
237 .type = V4L2_CTRL_TYPE_INTEGER,
238 },
239 .reg = PATH1_VOL_CTL,
240 .mask = 0xff,
241 .shift = 0,
242 }
243};
244static const int CX23885_CTLS = ARRAY_SIZE(cx23885_ctls);
245
246const u32 cx23885_user_ctrls[] = {
247 V4L2_CID_USER_CLASS,
248 V4L2_CID_BRIGHTNESS,
249 V4L2_CID_CONTRAST,
250 V4L2_CID_SATURATION,
251 V4L2_CID_HUE,
252 V4L2_CID_AUDIO_VOLUME,
253 V4L2_CID_AUDIO_MUTE,
254 0
255};
256EXPORT_SYMBOL(cx23885_user_ctrls);
257
258static const u32 *ctrl_classes[] = {
259 cx23885_user_ctrls,
260 NULL
261};
262
263void cx23885_video_wakeup(struct cx23885_dev *dev,
264 struct cx23885_dmaqueue *q, u32 count)
265{
266 struct cx23885_buffer *buf;
267 int bc;
268
269 for (bc = 0;; bc++) {
270 if (list_empty(&q->active))
271 break;
272 buf = list_entry(q->active.next,
273 struct cx23885_buffer, vb.queue);
a19602f2 274
e47f30b1
ST		 275 /* count comes from the hw and is is 16bit wide --
276 * this trick handles wrap-arounds correctly for
277 * up to 32767 buffers in flight... */
278 if ((s16) (count - buf->count) < 0)
279 break;
a19602f2 280
e47f30b1
ST		 281 do_gettimeofday(&buf->vb.ts);
282 dprintk(2, "[%p/%d] wakeup reg=%d buf=%d\n", buf, buf->vb.i,
283 count, buf->count);
284 buf->vb.state = VIDEOBUF_DONE;
285 list_del(&buf->vb.queue);
286 wake_up(&buf->vb.done);
287 }
288 if (list_empty(&q->active)) {
289 del_timer(&q->timeout);
290 } else {
291 mod_timer(&q->timeout, jiffies+BUFFER_TIMEOUT);
292 }
293 if (bc != 1)
21a78091 294 printk(KERN_ERR "%s: %d buffers handled (should be 1)\n",
e47f30b1
ST		 295 __FUNCTION__, bc);
296}
297
298int cx23885_set_tvnorm(struct cx23885_dev *dev, v4l2_std_id norm)
299{
300 dprintk(1, "%s(norm = 0x%08x) name: [%s]\n",
301 __FUNCTION__,
302 (unsigned int)norm,
303 v4l2_norm_to_name(norm));
304
305 dev->tvnorm = norm;
306
e47f30b1
ST		 307 /* Tell the analog tuner/demods */
308 cx23885_call_i2c_clients(&dev->i2c_bus[1], VIDIOC_S_STD, &norm);
309
310 /* Tell the internal A/V decoder */
311 cx23885_call_i2c_clients(&dev->i2c_bus[2], VIDIOC_S_STD, &norm);
312
313 return 0;
314}
315
316struct video_device *cx23885_vdev_init(struct cx23885_dev *dev,
317 struct pci_dev *pci,
318 struct video_device *template,
319 char *type)
320{
321 struct video_device *vfd;
322 dprintk(1, "%s()\n", __FUNCTION__);
323
324 vfd = video_device_alloc();
325 if (NULL == vfd)
326 return NULL;
327 *vfd = *template;
328 vfd->minor = -1;
329 vfd->dev = &pci->dev;
330 vfd->release = video_device_release;
331 snprintf(vfd->name, sizeof(vfd->name), "%s %s (%s)",
332 dev->name, type, cx23885_boards[dev->board].name);
333 return vfd;
334}
335
336int cx23885_ctrl_query(struct v4l2_queryctrl *qctrl)
337{
338 int i;
339
340 if (qctrl->id < V4L2_CID_BASE ||
341 qctrl->id >= V4L2_CID_LASTP1)
342 return -EINVAL;
343 for (i = 0; i < CX23885_CTLS; i++)
344 if (cx23885_ctls[i].v.id == qctrl->id)
345 break;
346 if (i == CX23885_CTLS) {
347 *qctrl = no_ctl;
348 return 0;
349 }
350 *qctrl = cx23885_ctls[i].v;
351 return 0;
352}
353EXPORT_SYMBOL(cx23885_ctrl_query);
354
355/* ------------------------------------------------------------------- */
356/* resource management */
357
358static int res_get(struct cx23885_dev *dev, struct cx23885_fh *fh,
359 unsigned int bit)
360{
361 dprintk(1, "%s()\n", __FUNCTION__);
362 if (fh->resources & bit)
363 /* have it already allocated */
364 return 1;
365
366 /* is it free? */
367 mutex_lock(&dev->lock);
368 if (dev->resources & bit) {
369 /* no, someone else uses it */
370 mutex_unlock(&dev->lock);
371 return 0;
372 }
373 /* it's free, grab it */
374 fh->resources |= bit;
375 dev->resources |= bit;
376 dprintk(1, "res: get %d\n", bit);
377 mutex_unlock(&dev->lock);
378 return 1;
379}
380
381static int res_check(struct cx23885_fh *fh, unsigned int bit)
382{
383 return (fh->resources & bit);
384}
385
386static int res_locked(struct cx23885_dev *dev, unsigned int bit)
387{
388 return (dev->resources & bit);
389}
390
391static void res_free(struct cx23885_dev *dev, struct cx23885_fh *fh,
392 unsigned int bits)
393{
394 BUG_ON((fh->resources & bits) != bits);
395 dprintk(1, "%s()\n", __FUNCTION__);
396
397 mutex_lock(&dev->lock);
398 fh->resources &= ~bits;
399 dev->resources &= ~bits;
400 dprintk(1, "res: put %d\n", bits);
401 mutex_unlock(&dev->lock);
402}
403
404int cx23885_video_mux(struct cx23885_dev *dev, unsigned int input)
405{
406 struct v4l2_routing route;
407 memset(&route, 0, sizeof(route));
408
409 dprintk(1, "%s() video_mux: %d [vmux=%d, gpio=0x%x,0x%x,0x%x,0x%x]\n",
410 __FUNCTION__,
411 input, INPUT(input)->vmux,
412 INPUT(input)->gpio0, INPUT(input)->gpio1,
413 INPUT(input)->gpio2, INPUT(input)->gpio3);
414 dev->input = input;
415
416 route.input = INPUT(input)->vmux;
417
418 /* Tell the internal A/V decoder */
419 cx23885_call_i2c_clients(&dev->i2c_bus[2],
420 VIDIOC_INT_S_VIDEO_ROUTING, &route);
421
422 return 0;
423}
424EXPORT_SYMBOL(cx23885_video_mux);
425
426/* ------------------------------------------------------------------ */
427int cx23885_set_scale(struct cx23885_dev *dev, unsigned int width,
428 unsigned int height, enum v4l2_field field)
429{
430 dprintk(1, "%s()\n", __FUNCTION__);
431 return 0;
432}
433
434static int cx23885_start_video_dma(struct cx23885_dev *dev,
435 struct cx23885_dmaqueue *q,
436 struct cx23885_buffer *buf)
437{
438 dprintk(1, "%s()\n", __FUNCTION__);
439
440 /* setup fifo + format */
441 cx23885_sram_channel_setup(dev, &dev->sram_channels[SRAM_CH01],
442 buf->bpl, buf->risc.dma);
443 cx23885_set_scale(dev, buf->vb.width, buf->vb.height, buf->vb.field);
444
445 /* reset counter */
446 cx_write(VID_A_GPCNT_CTL, 3);
447 q->count = 1;
448
449 /* enable irq */
450 cx_set(PCI_INT_MSK, cx_read(PCI_INT_MSK) | 0x01);
451 cx_set(VID_A_INT_MSK, 0x000011);
452
453 /* start dma */
454 cx_set(DEV_CNTRL2, (1<<5));
455 cx_set(VID_A_DMA_CTL, 0x11); /* FIFO and RISC enable */
456
457 return 0;
458}
459
e47f30b1
ST		 460
461static int cx23885_restart_video_queue(struct cx23885_dev *dev,
462 struct cx23885_dmaqueue *q)
463{
464 struct cx23885_buffer *buf, *prev;
465 struct list_head *item;
466 dprintk(1, "%s()\n", __FUNCTION__);
467
468 if (!list_empty(&q->active)) {
469 buf = list_entry(q->active.next, struct cx23885_buffer,
470 vb.queue);
471 dprintk(2, "restart_queue [%p/%d]: restart dma\n",
472 buf, buf->vb.i);
473 cx23885_start_video_dma(dev, q, buf);
474 list_for_each(item, &q->active) {
475 buf = list_entry(item, struct cx23885_buffer,
476 vb.queue);
477 buf->count = q->count++;
478 }
479 mod_timer(&q->timeout, jiffies+BUFFER_TIMEOUT);
480 return 0;
481 }
482
483 prev = NULL;
484 for (;;) {
485 if (list_empty(&q->queued))
486 return 0;
487 buf = list_entry(q->queued.next, struct cx23885_buffer,
488 vb.queue);
489 if (NULL == prev) {
490 list_move_tail(&buf->vb.queue, &q->active);
491 cx23885_start_video_dma(dev, q, buf);
492 buf->vb.state = VIDEOBUF_ACTIVE;
493 buf->count = q->count++;
494 mod_timer(&q->timeout, jiffies+BUFFER_TIMEOUT);
495 dprintk(2, "[%p/%d] restart_queue - first active\n",
496 buf, buf->vb.i);
497
498 } else if (prev->vb.width == buf->vb.width &&
499 prev->vb.height == buf->vb.height &&
500 prev->fmt == buf->fmt) {
501 list_move_tail(&buf->vb.queue, &q->active);
502 buf->vb.state = VIDEOBUF_ACTIVE;
503 buf->count = q->count++;
504 prev->risc.jmp[1] = cpu_to_le32(buf->risc.dma);
505 prev->risc.jmp[2] = cpu_to_le32(0); /* Bits 63 - 32 */
506 dprintk(2, "[%p/%d] restart_queue - move to active\n",
507 buf, buf->vb.i);
508 } else {
509 return 0;
510 }
511 prev = buf;
512 }
513}
514
515static int buffer_setup(struct videobuf_queue *q, unsigned int *count,
516 unsigned int *size)
517{
518 struct cx23885_fh *fh = q->priv_data;
519
520 *size = fh->fmt->depth*fh->width*fh->height >> 3;
521 if (0 == *count)
522 *count = 32;
523 while (*size * *count > vid_limit * 1024 * 1024)
524 (*count)--;
525 return 0;
526}
527
528static int buffer_prepare(struct videobuf_queue *q, struct videobuf_buffer *vb,
529 enum v4l2_field field)
530{
531 struct cx23885_fh *fh = q->priv_data;
532 struct cx23885_dev *dev = fh->dev;
533 struct cx23885_buffer *buf =
534 container_of(vb, struct cx23885_buffer, vb);
535 int rc, init_buffer = 0;
536 u32 line0_offset, line1_offset;
537 struct videobuf_dmabuf *dma = videobuf_to_dma(&buf->vb);
538
539 BUG_ON(NULL == fh->fmt);
540 if (fh->width < 48 || fh->width > norm_maxw(dev->tvnorm) ||
541 fh->height < 32 || fh->height > norm_maxh(dev->tvnorm))
542 return -EINVAL;
543 buf->vb.size = (fh->width * fh->height * fh->fmt->depth) >> 3;
544 if (0 != buf->vb.baddr && buf->vb.bsize < buf->vb.size)
545 return -EINVAL;
546
547 if (buf->fmt != fh->fmt ||
548 buf->vb.width != fh->width ||
549 buf->vb.height != fh->height ||
550 buf->vb.field != field) {
551 buf->fmt = fh->fmt;
552 buf->vb.width = fh->width;
553 buf->vb.height = fh->height;
554 buf->vb.field = field;
555 init_buffer = 1;
556 }
557
558 if (VIDEOBUF_NEEDS_INIT == buf->vb.state) {
559 init_buffer = 1;
560 rc = videobuf_iolock(q, &buf->vb, NULL);
561 if (0 != rc)
562 goto fail;
563 }
564
565 if (init_buffer) {
566 buf->bpl = buf->vb.width * buf->fmt->depth >> 3;
567 switch (buf->vb.field) {
568 case V4L2_FIELD_TOP:
569 cx23885_risc_buffer(dev->pci, &buf->risc,
570 dma->sglist, 0, UNSET,
571 buf->bpl, 0, buf->vb.height);
572 break;
573 case V4L2_FIELD_BOTTOM:
574 cx23885_risc_buffer(dev->pci, &buf->risc,
575 dma->sglist, UNSET, 0,
576 buf->bpl, 0, buf->vb.height);
577 break;
578 case V4L2_FIELD_INTERLACED:
579 if (dev->tvnorm & V4L2_STD_NTSC) {
580 /* cx25840 transmits NTSC bottom field first */
581 dprintk(1, "%s() Creating NTSC risc\n",
582 __FUNCTION__);
583 line0_offset = buf->bpl;
584 line1_offset = 0;
585 } else {
586 /* All other formats are top field first */
587 dprintk(1, "%s() Creating PAL/SECAM risc\n",
588 __FUNCTION__);
589 line0_offset = 0;
590 line1_offset = buf->bpl;
591 }
592 cx23885_risc_buffer(dev->pci, &buf->risc,
593 dma->sglist, line0_offset,
594 line1_offset,
595 buf->bpl, buf->bpl,
596 buf->vb.height >> 1);
597 break;
598 case V4L2_FIELD_SEQ_TB:
599 cx23885_risc_buffer(dev->pci, &buf->risc,
600 dma->sglist,
601 0, buf->bpl * (buf->vb.height >> 1),
602 buf->bpl, 0,
603 buf->vb.height >> 1);
604 break;
605 case V4L2_FIELD_SEQ_BT:
606 cx23885_risc_buffer(dev->pci, &buf->risc,
607 dma->sglist,
608 buf->bpl * (buf->vb.height >> 1), 0,
609 buf->bpl, 0,
610 buf->vb.height >> 1);
611 break;
612 default:
613 BUG();
614 }
615 }
616 dprintk(2, "[%p/%d] buffer_prep - %dx%d %dbpp \"%s\" - dma=0x%08lx\n",
617 buf, buf->vb.i,
618 fh->width, fh->height, fh->fmt->depth, fh->fmt->name,
619 (unsigned long)buf->risc.dma);
620
621 buf->vb.state = VIDEOBUF_PREPARED;
622 return 0;
623
624 fail:
625 cx23885_free_buffer(q, buf);
626 return rc;
627}
628
629static void buffer_queue(struct videobuf_queue *vq, struct videobuf_buffer *vb)
630{
631 struct cx23885_buffer *buf = container_of(vb,
632 struct cx23885_buffer, vb);
633 struct cx23885_buffer *prev;
634 struct cx23885_fh *fh = vq->priv_data;
635 struct cx23885_dev *dev = fh->dev;
636 struct cx23885_dmaqueue *q = &dev->vidq;
637
638 /* add jump to stopper */
639 buf->risc.jmp[0] = cpu_to_le32(RISC_JUMP | RISC_IRQ1 | RISC_CNT_INC);
640 buf->risc.jmp[1] = cpu_to_le32(q->stopper.dma);
641 buf->risc.jmp[2] = cpu_to_le32(0); /* bits 63-32 */
642
643 if (!list_empty(&q->queued)) {
644 list_add_tail(&buf->vb.queue, &q->queued);
645 buf->vb.state = VIDEOBUF_QUEUED;
646 dprintk(2, "[%p/%d] buffer_queue - append to queued\n",
647 buf, buf->vb.i);
648
649 } else if (list_empty(&q->active)) {
650 list_add_tail(&buf->vb.queue, &q->active);
651 cx23885_start_video_dma(dev, q, buf);
652 buf->vb.state = VIDEOBUF_ACTIVE;
653 buf->count = q->count++;
654 mod_timer(&q->timeout, jiffies+BUFFER_TIMEOUT);
655 dprintk(2, "[%p/%d] buffer_queue - first active\n",
656 buf, buf->vb.i);
657
658 } else {
659 prev = list_entry(q->active.prev, struct cx23885_buffer,
660 vb.queue);
661 if (prev->vb.width == buf->vb.width &&
662 prev->vb.height == buf->vb.height &&
663 prev->fmt == buf->fmt) {
664 list_add_tail(&buf->vb.queue, &q->active);
665 buf->vb.state = VIDEOBUF_ACTIVE;
666 buf->count = q->count++;
667 prev->risc.jmp[1] = cpu_to_le32(buf->risc.dma);
668 /* 64 bit bits 63-32 */
669 prev->risc.jmp[2] = cpu_to_le32(0);
670 dprintk(2, "[%p/%d] buffer_queue - append to active\n",
671 buf, buf->vb.i);
672
673 } else {
674 list_add_tail(&buf->vb.queue, &q->queued);
675 buf->vb.state = VIDEOBUF_QUEUED;
676 dprintk(2, "[%p/%d] buffer_queue - first queued\n",
677 buf, buf->vb.i);
678 }
679 }
680}
681
682static void buffer_release(struct videobuf_queue *q,
683 struct videobuf_buffer *vb)
684{
685 struct cx23885_buffer *buf = container_of(vb,
686 struct cx23885_buffer, vb);
687
688 cx23885_free_buffer(q, buf);
689}
690
691static struct videobuf_queue_ops cx23885_video_qops = {
692 .buf_setup = buffer_setup,
693 .buf_prepare = buffer_prepare,
694 .buf_queue = buffer_queue,
695 .buf_release = buffer_release,
696};
697
698static struct videobuf_queue *get_queue(struct cx23885_fh *fh)
699{
700 switch (fh->type) {
701 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
702 return &fh->vidq;
703 case V4L2_BUF_TYPE_VBI_CAPTURE:
704 return &fh->vbiq;
705 default:
706 BUG();
707 return NULL;
708 }
709}
710
711static int get_resource(struct cx23885_fh *fh)
712{
713 switch (fh->type) {
714 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
715 return RESOURCE_VIDEO;
716 case V4L2_BUF_TYPE_VBI_CAPTURE:
717 return RESOURCE_VBI;
718 default:
719 BUG();
720 return 0;
721 }
722}
723
724static int video_open(struct inode *inode, struct file *file)
725{
726 int minor = iminor(inode);
727 struct cx23885_dev *h, *dev = NULL;
728 struct cx23885_fh *fh;
729 struct list_head *list;
730 enum v4l2_buf_type type = 0;
731 int radio = 0;
732
733 list_for_each(list, &cx23885_devlist) {
734 h = list_entry(list, struct cx23885_dev, devlist);
735 if (h->video_dev->minor == minor) {
736 dev = h;
737 type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
738 }
739 if (h->vbi_dev &&
740 h->vbi_dev->minor == minor) {
741 dev = h;
742 type = V4L2_BUF_TYPE_VBI_CAPTURE;
743 }
744 if (h->radio_dev &&
745 h->radio_dev->minor == minor) {
746 radio = 1;
747 dev = h;
748 }
749 }
750 if (NULL == dev)
751 return -ENODEV;
752
753 dprintk(1, "open minor=%d radio=%d type=%s\n",
754 minor, radio, v4l2_type_names[type]);
755
756 /* allocate + initialize per filehandle data */
757 fh = kzalloc(sizeof(*fh), GFP_KERNEL);
758 if (NULL == fh)
759 return -ENOMEM;
760 file->private_data = fh;
761 fh->dev = dev;
762 fh->radio = radio;
763 fh->type = type;
764 fh->width = 320;
765 fh->height = 240;
766 fh->fmt = format_by_fourcc(V4L2_PIX_FMT_BGR24);
767
768 videobuf_queue_pci_init(&fh->vidq, &cx23885_video_qops,
769 dev->pci, &dev->slock,
770 V4L2_BUF_TYPE_VIDEO_CAPTURE,
771 V4L2_FIELD_INTERLACED,
772 sizeof(struct cx23885_buffer),
773 fh);
774
775 dprintk(1, "post videobuf_queue_init()\n");
776
777
778 return 0;
779}
780
781static ssize_t video_read(struct file *file, char __user *data,
782 size_t count, loff_t *ppos)
783{
784 struct cx23885_fh *fh = file->private_data;
785
786 switch (fh->type) {
787 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
788 if (res_locked(fh->dev, RESOURCE_VIDEO))
789 return -EBUSY;
790 return videobuf_read_one(&fh->vidq, data, count, ppos,
791 file->f_flags & O_NONBLOCK);
792 case V4L2_BUF_TYPE_VBI_CAPTURE:
793 if (!res_get(fh->dev, fh, RESOURCE_VBI))
794 return -EBUSY;
795 return videobuf_read_stream(&fh->vbiq, data, count, ppos, 1,
796 file->f_flags & O_NONBLOCK);
797 default:
798 BUG();
799 return 0;
800 }
801}
802
803static unsigned int video_poll(struct file *file,
804 struct poll_table_struct *wait)
805{
806 struct cx23885_fh *fh = file->private_data;
807 struct cx23885_buffer *buf;
808
809 if (V4L2_BUF_TYPE_VBI_CAPTURE == fh->type) {
810 if (!res_get(fh->dev, fh, RESOURCE_VBI))
811 return POLLERR;
812 return videobuf_poll_stream(file, &fh->vbiq, wait);
813 }
814
815 if (res_check(fh, RESOURCE_VIDEO)) {
816 /* streaming capture */
817 if (list_empty(&fh->vidq.stream))
818 return POLLERR;
819 buf = list_entry(fh->vidq.stream.next,
820 struct cx23885_buffer, vb.stream);
821 } else {
822 /* read() capture */
823 buf = (struct cx23885_buffer *)fh->vidq.read_buf;
824 if (NULL == buf)
825 return POLLERR;
826 }
827 poll_wait(file, &buf->vb.done, wait);
828 if (buf->vb.state == VIDEOBUF_DONE ||
829 buf->vb.state == VIDEOBUF_ERROR)
830 return POLLIN|POLLRDNORM;
831 return 0;
832}
833
834static int video_release(struct inode *inode, struct file *file)
835{
836 struct cx23885_fh *fh = file->private_data;
837 struct cx23885_dev *dev = fh->dev;
838
839 /* turn off overlay */
840 if (res_check(fh, RESOURCE_OVERLAY)) {
841 /* FIXME */
842 res_free(dev, fh, RESOURCE_OVERLAY);
843 }
844
845 /* stop video capture */
846 if (res_check(fh, RESOURCE_VIDEO)) {
847 videobuf_queue_cancel(&fh->vidq);
848 res_free(dev, fh, RESOURCE_VIDEO);
849 }
850 if (fh->vidq.read_buf) {
851 buffer_release(&fh->vidq, fh->vidq.read_buf);
852 kfree(fh->vidq.read_buf);
853 }
854
855 /* stop vbi capture */
856 if (res_check(fh, RESOURCE_VBI)) {
857 if (fh->vbiq.streaming)
858 videobuf_streamoff(&fh->vbiq);
859 if (fh->vbiq.reading)
860 videobuf_read_stop(&fh->vbiq);
861 res_free(dev, fh, RESOURCE_VBI);
862 }
863
864 videobuf_mmap_free(&fh->vidq);
865 file->private_data = NULL;
866 kfree(fh);
867
a19602f2
ST		 868 /* We are not putting the tuner to sleep here on exit, because
869 * we want to use the mpeg encoder in another session to capture
870 * tuner video. Closing this will result in no video to the encoder.
871 */
e47f30b1
ST		 872
873 return 0;
874}
875
876static int video_mmap(struct file *file, struct vm_area_struct *vma)
877{
878 struct cx23885_fh *fh = file->private_data;
879
880 return videobuf_mmap_mapper(get_queue(fh), vma);
881}
882
883/* ------------------------------------------------------------------ */
884/* VIDEO CTRL IOCTLS */
885
886int cx23885_get_control(struct cx23885_dev *dev, struct v4l2_control *ctl)
887{
888 dprintk(1, "%s() calling cx25840(VIDIOC_G_CTRL)\n", __FUNCTION__);
889 cx23885_call_i2c_clients(&dev->i2c_bus[2], VIDIOC_G_CTRL, ctl);
890 return 0;
891}
892EXPORT_SYMBOL(cx23885_get_control);
893
894int cx23885_set_control(struct cx23885_dev *dev, struct v4l2_control *ctl)
895{
896 dprintk(1, "%s() calling cx25840(VIDIOC_S_CTRL)"
897 " (disabled - no action)\n", __FUNCTION__);
898 return 0;
899}
900EXPORT_SYMBOL(cx23885_set_control);
901
902static void init_controls(struct cx23885_dev *dev)
903{
904 struct v4l2_control ctrl;
905 int i;
906
907 for (i = 0; i < CX23885_CTLS; i++) {
908 ctrl.id = cx23885_ctls[i].v.id;
909 ctrl.value = cx23885_ctls[i].v.default_value;
910
911 cx23885_set_control(dev, &ctrl);
912 }
913}
914
915/* ------------------------------------------------------------------ */
916/* VIDEO IOCTLS */
917
918static int vidioc_g_fmt_cap(struct file *file, void *priv,
919 struct v4l2_format *f)
920{
921 struct cx23885_fh *fh = priv;
922
923 f->fmt.pix.width = fh->width;
924 f->fmt.pix.height = fh->height;
925 f->fmt.pix.field = fh->vidq.field;
926 f->fmt.pix.pixelformat = fh->fmt->fourcc;
927 f->fmt.pix.bytesperline =
928 (f->fmt.pix.width * fh->fmt->depth) >> 3;
929 f->fmt.pix.sizeimage =
930 f->fmt.pix.height * f->fmt.pix.bytesperline;
931
932 return 0;
933}
934
935static int vidioc_try_fmt_cap(struct file *file, void *priv,
936 struct v4l2_format *f)
937{
938 struct cx23885_dev *dev = ((struct cx23885_fh *)priv)->dev;
939 struct cx23885_fmt *fmt;
940 enum v4l2_field field;
941 unsigned int maxw, maxh;
942
943 fmt = format_by_fourcc(f->fmt.pix.pixelformat);
944 if (NULL == fmt)
945 return -EINVAL;
946
947 field = f->fmt.pix.field;
948 maxw = norm_maxw(dev->tvnorm);
949 maxh = norm_maxh(dev->tvnorm);
950
951 if (V4L2_FIELD_ANY == field) {
952 field = (f->fmt.pix.height > maxh/2)
953 ? V4L2_FIELD_INTERLACED
954 : V4L2_FIELD_BOTTOM;
955 }
956
957 switch (field) {
958 case V4L2_FIELD_TOP:
959 case V4L2_FIELD_BOTTOM:
960 maxh = maxh / 2;
961 break;
962 case V4L2_FIELD_INTERLACED:
963 break;
964 default:
965 return -EINVAL;
966 }
967
968 f->fmt.pix.field = field;
969 if (f->fmt.pix.height < 32)
970 f->fmt.pix.height = 32;
971 if (f->fmt.pix.height > maxh)
972 f->fmt.pix.height = maxh;
973 if (f->fmt.pix.width < 48)
974 f->fmt.pix.width = 48;
975 if (f->fmt.pix.width > maxw)
976 f->fmt.pix.width = maxw;
977 f->fmt.pix.width &= ~0x03;
978 f->fmt.pix.bytesperline =
979 (f->fmt.pix.width * fmt->depth) >> 3;
980 f->fmt.pix.sizeimage =
981 f->fmt.pix.height * f->fmt.pix.bytesperline;
982
983 return 0;
984}
985
986static int vidioc_s_fmt_cap(struct file *file, void *priv,
987 struct v4l2_format *f)
988{
989 struct cx23885_fh *fh = priv;
990 struct cx23885_dev *dev = ((struct cx23885_fh *)priv)->dev;
991 int err;
992
993 dprintk(2, "%s()\n", __FUNCTION__);
994 err = vidioc_try_fmt_cap(file, priv, f);
995
996 if (0 != err)
997 return err;
998 fh->fmt = format_by_fourcc(f->fmt.pix.pixelformat);
999 fh->width = f->fmt.pix.width;
1000 fh->height = f->fmt.pix.height;
1001 fh->vidq.field = f->fmt.pix.field;
1002 dprintk(2, "%s() width=%d height=%d field=%d\n", __FUNCTION__,
1003 fh->width, fh->height, fh->vidq.field);
1004 cx23885_call_i2c_clients(&dev->i2c_bus[2], VIDIOC_S_FMT, f);
1005 return 0;
1006}
1007
1008static int vidioc_querycap(struct file *file, void *priv,
1009 struct v4l2_capability *cap)
1010{
1011 struct cx23885_dev *dev = ((struct cx23885_fh *)priv)->dev;
1012
1013 strcpy(cap->driver, "cx23885");
1014 strlcpy(cap->card, cx23885_boards[dev->board].name,
1015 sizeof(cap->card));
1016 sprintf(cap->bus_info, "PCIe:%s", pci_name(dev->pci));
1017 cap->version = CX23885_VERSION_CODE;
1018 cap->capabilities =
1019 V4L2_CAP_VIDEO_CAPTURE |
1020 V4L2_CAP_READWRITE |
1021 V4L2_CAP_STREAMING |
1022 V4L2_CAP_VBI_CAPTURE;
1023 if (UNSET != dev->tuner_type)
1024 cap->capabilities |= V4L2_CAP_TUNER;
1025 return 0;
1026}
1027
1028static int vidioc_enum_fmt_cap(struct file *file, void *priv,
1029 struct v4l2_fmtdesc *f)
1030{
1031 if (unlikely(f->index >= ARRAY_SIZE(formats)))
1032 return -EINVAL;
1033
1034 strlcpy(f->description, formats[f->index].name,
1035 sizeof(f->description));
1036 f->pixelformat = formats[f->index].fourcc;
1037
1038 return 0;
1039}
1040
1041#ifdef CONFIG_VIDEO_V4L1_COMPAT
1042static int vidiocgmbuf(struct file *file, void *priv,
1043 struct video_mbuf *mbuf)
1044{
1045 struct cx23885_fh *fh = priv;
1046 struct videobuf_queue *q;
1047 struct v4l2_requestbuffers req;
1048 unsigned int i;
1049 int err;
1050
1051 q = get_queue(fh);
1052 memset(&req, 0, sizeof(req));
1053 req.type = q->type;
1054 req.count = 8;
1055 req.memory = V4L2_MEMORY_MMAP;
1056 err = videobuf_reqbufs(q, &req);
1057 if (err < 0)
1058 return err;
1059
1060 mbuf->frames = req.count;
1061 mbuf->size = 0;
1062 for (i = 0; i < mbuf->frames; i++) {
1063 mbuf->offsets[i] = q->bufs[i]->boff;
1064 mbuf->size += q->bufs[i]->bsize;
1065 }
1066 return 0;
1067}
1068#endif
1069
1070static int vidioc_reqbufs(struct file *file, void *priv,
1071 struct v4l2_requestbuffers *p)
1072{
1073 struct cx23885_fh *fh = priv;
1074 return (videobuf_reqbufs(get_queue(fh), p));
1075}
1076
1077static int vidioc_querybuf(struct file *file, void *priv,
1078 struct v4l2_buffer *p)
1079{
1080 struct cx23885_fh *fh = priv;
1081 return (videobuf_querybuf(get_queue(fh), p));
1082}
1083
1084static int vidioc_qbuf(struct file *file, void *priv,
1085 struct v4l2_buffer *p)
1086{
1087 struct cx23885_fh *fh = priv;
1088 return (videobuf_qbuf(get_queue(fh), p));
1089}
1090
1091static int vidioc_dqbuf(struct file *file, void *priv,
1092 struct v4l2_buffer *p)
1093{
1094 struct cx23885_fh *fh = priv;
1095 return (videobuf_dqbuf(get_queue(fh), p,
1096 file->f_flags & O_NONBLOCK));
1097}
1098
1099static int vidioc_streamon(struct file *file, void *priv,
1100 enum v4l2_buf_type i)
1101{
1102 struct cx23885_fh *fh = priv;
1103 struct cx23885_dev *dev = fh->dev;
1104 dprintk(1, "%s()\n", __FUNCTION__);
1105
1106 if (unlikely(fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE))
1107 return -EINVAL;
1108 if (unlikely(i != fh->type))
1109 return -EINVAL;
1110
1111 if (unlikely(!res_get(dev, fh, get_resource(fh))))
1112 return -EBUSY;
1113 return videobuf_streamon(get_queue(fh));
1114}
1115
1116static int vidioc_streamoff(struct file *file, void *priv, enum v4l2_buf_type i)
1117{
1118 struct cx23885_fh *fh = priv;
1119 struct cx23885_dev *dev = fh->dev;
1120 int err, res;
1121 dprintk(1, "%s()\n", __FUNCTION__);
1122
1123 if (fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
1124 return -EINVAL;
1125 if (i != fh->type)
1126 return -EINVAL;
1127
1128 res = get_resource(fh);
1129 err = videobuf_streamoff(get_queue(fh));
1130 if (err < 0)
1131 return err;
1132 res_free(dev, fh, res);
1133 return 0;
1134}
1135
1136static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id *tvnorms)
1137{
1138 struct cx23885_dev *dev = ((struct cx23885_fh *)priv)->dev;
1139 dprintk(1, "%s()\n", __FUNCTION__);
1140
1141 mutex_lock(&dev->lock);
1142 cx23885_set_tvnorm(dev, *tvnorms);
1143 mutex_unlock(&dev->lock);
1144
1145 return 0;
1146}
1147
1148int cx23885_enum_input(struct cx23885_dev *dev, struct v4l2_input *i)
1149{
1150 static const char *iname[] = {
1151 [CX23885_VMUX_COMPOSITE1] = "Composite1",
1152 [CX23885_VMUX_COMPOSITE2] = "Composite2",
1153 [CX23885_VMUX_COMPOSITE3] = "Composite3",
1154 [CX23885_VMUX_COMPOSITE4] = "Composite4",
1155 [CX23885_VMUX_SVIDEO] = "S-Video",
1156 [CX23885_VMUX_TELEVISION] = "Television",
1157 [CX23885_VMUX_CABLE] = "Cable TV",
1158 [CX23885_VMUX_DVB] = "DVB",
1159 [CX23885_VMUX_DEBUG] = "for debug only",
1160 };
1161 unsigned int n;
1162 dprintk(1, "%s()\n", __FUNCTION__);
1163
1164 n = i->index;
1165 if (n >= 4)
1166 return -EINVAL;
1167
1168 if (0 == INPUT(n)->type)
1169 return -EINVAL;
1170
1171 memset(i, 0, sizeof(*i));
1172 i->index = n;
1173 i->type = V4L2_INPUT_TYPE_CAMERA;
1174 strcpy(i->name, iname[INPUT(n)->type]);
1175 if ((CX23885_VMUX_TELEVISION == INPUT(n)->type) ||
1176 (CX23885_VMUX_CABLE == INPUT(n)->type))
1177 i->type = V4L2_INPUT_TYPE_TUNER;
1178 i->std = CX23885_NORMS;
1179 return 0;
1180}
1181EXPORT_SYMBOL(cx23885_enum_input);
1182
1183static int vidioc_enum_input(struct file *file, void *priv,
1184 struct v4l2_input *i)
1185{
1186 struct cx23885_dev *dev = ((struct cx23885_fh *)priv)->dev;
1187 dprintk(1, "%s()\n", __FUNCTION__);
1188 return cx23885_enum_input(dev, i);
1189}
1190
1191static int vidioc_g_input(struct file *file, void *priv, unsigned int *i)
1192{
1193 struct cx23885_dev *dev = ((struct cx23885_fh *)priv)->dev;
1194
1195 *i = dev->input;
1196 dprintk(1, "%s() returns %d\n", __FUNCTION__, *i);
1197 return 0;
1198}
1199
1200static int vidioc_s_input(struct file *file, void *priv, unsigned int i)
1201{
1202 struct cx23885_dev *dev = ((struct cx23885_fh *)priv)->dev;
1203
1204 dprintk(1, "%s(%d)\n", __FUNCTION__, i);
1205
1206 if (i >= 4) {
1207 dprintk(1, "%s() -EINVAL\n", __FUNCTION__);
1208 return -EINVAL;
1209 }
1210
1211 mutex_lock(&dev->lock);
1212 cx23885_video_mux(dev, i);
1213 mutex_unlock(&dev->lock);
1214 return 0;
1215}
1216
1217static int vidioc_queryctrl(struct file *file, void *priv,
1218 struct v4l2_queryctrl *qctrl)
1219{
1220 qctrl->id = v4l2_ctrl_next(ctrl_classes, qctrl->id);
1221 if (unlikely(qctrl->id == 0))
1222 return -EINVAL;
1223 return cx23885_ctrl_query(qctrl);
1224}
1225
1226static int vidioc_g_ctrl(struct file *file, void *priv,
1227 struct v4l2_control *ctl)
1228{
1229 struct cx23885_dev *dev = ((struct cx23885_fh *)priv)->dev;
1230
1231 return cx23885_get_control(dev, ctl);
1232}
1233
1234static int vidioc_s_ctrl(struct file *file, void *priv,
1235 struct v4l2_control *ctl)
1236{
1237 struct cx23885_dev *dev = ((struct cx23885_fh *)priv)->dev;
1238
1239 return cx23885_set_control(dev, ctl);
1240}
1241
1242static int vidioc_g_tuner(struct file *file, void *priv,
1243 struct v4l2_tuner *t)
1244{
1245 struct cx23885_dev *dev = ((struct cx23885_fh *)priv)->dev;
1246
1247 if (unlikely(UNSET == dev->tuner_type))
1248 return -EINVAL;
1249 if (0 != t->index)
1250 return -EINVAL;
1251
1252 strcpy(t->name, "Television");
1253 t->type = V4L2_TUNER_ANALOG_TV;
1254 t->capability = V4L2_TUNER_CAP_NORM;
1255 t->rangehigh = 0xffffffffUL;
1256 t->signal = 0xffff ; /* LOCKED */
1257 return 0;
1258}
1259
1260static int vidioc_s_tuner(struct file *file, void *priv,
1261 struct v4l2_tuner *t)
1262{
1263 struct cx23885_dev *dev = ((struct cx23885_fh *)priv)->dev;
1264
1265 if (UNSET == dev->tuner_type)
1266 return -EINVAL;
1267 if (0 != t->index)
1268 return -EINVAL;
1269 return 0;
1270}
1271
1272static int vidioc_g_frequency(struct file *file, void *priv,
1273 struct v4l2_frequency *f)
1274{
1275 struct cx23885_fh *fh = priv;
1276 struct cx23885_dev *dev = fh->dev;
1277
1278 if (unlikely(UNSET == dev->tuner_type))
1279 return -EINVAL;
1280
1281 /* f->type = fh->radio ? V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV; */
1282 f->type = fh->radio ? V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
1283 f->frequency = dev->freq;
1284
1285 cx23885_call_i2c_clients(&dev->i2c_bus[1], VIDIOC_G_FREQUENCY, f);
1286
1287 return 0;
1288}
1289
1290int cx23885_set_freq(struct cx23885_dev *dev, struct v4l2_frequency *f)
1291{
1292 if (unlikely(UNSET == dev->tuner_type))
1293 return -EINVAL;
1294 if (unlikely(f->tuner != 0))
1295 return -EINVAL;
1296
1297 mutex_lock(&dev->lock);
1298 dev->freq = f->frequency;
1299
1300 cx23885_call_i2c_clients(&dev->i2c_bus[1], VIDIOC_S_FREQUENCY, f);
1301
1302 /* When changing channels it is required to reset TVAUDIO */
1303 msleep(10);
1304
1305 mutex_unlock(&dev->lock);
1306
1307 return 0;
1308}
1309EXPORT_SYMBOL(cx23885_set_freq);
1310
1311static int vidioc_s_frequency(struct file *file, void *priv,
1312 struct v4l2_frequency *f)
1313{
1314 struct cx23885_fh *fh = priv;
1315 struct cx23885_dev *dev = fh->dev;
1316
1317 if (unlikely(0 == fh->radio && f->type != V4L2_TUNER_ANALOG_TV))
1318 return -EINVAL;
1319 if (unlikely(1 == fh->radio && f->type != V4L2_TUNER_RADIO))
1320 return -EINVAL;
1321
1322 return
1323 cx23885_set_freq(dev, f);
1324}
1325
1326#ifdef CONFIG_VIDEO_ADV_DEBUG
1327static int vidioc_g_register(struct file *file, void *fh,
1328 struct v4l2_register *reg)
1329{
1330 struct cx23885_dev *dev = ((struct cx23885_fh *)fh)->dev;
1331
a19602f2
ST		 1332 if (!v4l2_chip_match_host(reg->match_type, reg->match_chip))
1333 return -EINVAL;
1334
e47f30b1
ST		 1335 cx23885_call_i2c_clients(&dev->i2c_bus[2], VIDIOC_DBG_G_REGISTER, reg);
1336
1337 return 0;
1338}
1339
1340static int vidioc_s_register(struct file *file, void *fh,
1341 struct v4l2_register *reg)
1342{
1343 struct cx23885_dev *dev = ((struct cx23885_fh *)fh)->dev;
1344
a19602f2 1345 if (!v4l2_chip_match_host(reg->match_type, reg->match_chip))
e47f30b1
ST		 1346 return -EINVAL;
1347
a19602f2 1348 cx23885_call_i2c_clients(&dev->i2c_bus[2], VIDIOC_DBG_S_REGISTER, reg);
e47f30b1 1349
e47f30b1
ST		 1350 return 0;
1351}
a19602f2 1352#endif
e47f30b1
ST		 1353
1354/* ----------------------------------------------------------- */
1355
1356static void cx23885_vid_timeout(unsigned long data)
1357{
1358 struct cx23885_dev *dev = (struct cx23885_dev *)data;
1359 struct cx23885_dmaqueue *q = &dev->vidq;
1360 struct cx23885_buffer *buf;
1361 unsigned long flags;
1362
1363 cx23885_sram_channel_dump(dev, &dev->sram_channels[SRAM_CH01]);
1364
1365 cx_clear(VID_A_DMA_CTL, 0x11);
1366
1367 spin_lock_irqsave(&dev->slock, flags);
1368 while (!list_empty(&q->active)) {
1369 buf = list_entry(q->active.next,
1370 struct cx23885_buffer, vb.queue);
1371 list_del(&buf->vb.queue);
1372 buf->vb.state = VIDEOBUF_ERROR;
1373 wake_up(&buf->vb.done);
1374 printk(KERN_ERR "%s/0: [%p/%d] timeout - dma=0x%08lx\n",
1375 dev->name, buf, buf->vb.i,
1376 (unsigned long)buf->risc.dma);
1377 }
1378 cx23885_restart_video_queue(dev, q);
1379 spin_unlock_irqrestore(&dev->slock, flags);
1380}
1381
1382int cx23885_video_irq(struct cx23885_dev *dev, u32 status)
1383{
1384 u32 mask, count;
1385 int handled = 0;
1386
1387 mask = cx_read(VID_A_INT_MSK);
1388 if (0 == (status & mask))
1389 return handled;
1390 cx_write(VID_A_INT_STAT, status);
1391
1392 dprintk(2, "%s() status = 0x%08x\n", __FUNCTION__, status);
1393 /* risc op code error */
1394 if (status & (1 << 16)) {
1395 printk(KERN_WARNING "%s/0: video risc op code error\n",
1396 dev->name);
1397 cx_clear(VID_A_DMA_CTL, 0x11);
1398 cx23885_sram_channel_dump(dev, &dev->sram_channels[SRAM_CH01]);
1399 }
1400
1401 /* risc1 y */
1402 if (status & 0x01) {
1403 spin_lock(&dev->slock);
1404 count = cx_read(VID_A_GPCNT);
1405 cx23885_video_wakeup(dev, &dev->vidq, count);
1406 spin_unlock(&dev->slock);
1407 handled++;
1408 }
1409 /* risc2 y */
1410 if (status & 0x10) {
1411 dprintk(2, "stopper video\n");
1412 spin_lock(&dev->slock);
1413 cx23885_restart_video_queue(dev, &dev->vidq);
1414 spin_unlock(&dev->slock);
1415 handled++;
1416 }
1417
1418 return handled;
1419}
1420
e47f30b1
ST		 1421/* ----------------------------------------------------------- */
1422/* exported stuff */
1423
1424static const struct file_operations video_fops = {
1425 .owner = THIS_MODULE,
1426 .open = video_open,
1427 .release = video_release,
1428 .read = video_read,
1429 .poll = video_poll,
1430 .mmap = video_mmap,
1431 .ioctl = video_ioctl2,
1432 .compat_ioctl = v4l_compat_ioctl32,
1433 .llseek = no_llseek,
1434};
1435
1436static struct video_device cx23885_vbi_template;
1437static struct video_device cx23885_video_template = {
1438 .name = "cx23885-video",
1439 .type = VID_TYPE_CAPTURE|VID_TYPE_TUNER|VID_TYPE_SCALES,
1440 .fops = &video_fops,
1441 .minor = -1,
1442 .vidioc_querycap = vidioc_querycap,
1443 .vidioc_enum_fmt_cap = vidioc_enum_fmt_cap,
1444 .vidioc_g_fmt_cap = vidioc_g_fmt_cap,
1445 .vidioc_try_fmt_cap = vidioc_try_fmt_cap,
1446 .vidioc_s_fmt_cap = vidioc_s_fmt_cap,
1447 .vidioc_g_fmt_vbi = cx23885_vbi_fmt,
1448 .vidioc_try_fmt_vbi = cx23885_vbi_fmt,
1449 .vidioc_s_fmt_vbi = cx23885_vbi_fmt,
1450 .vidioc_reqbufs = vidioc_reqbufs,
1451 .vidioc_querybuf = vidioc_querybuf,
1452 .vidioc_qbuf = vidioc_qbuf,
1453 .vidioc_dqbuf = vidioc_dqbuf,
1454 .vidioc_s_std = vidioc_s_std,
1455 .vidioc_enum_input = vidioc_enum_input,
1456 .vidioc_g_input = vidioc_g_input,
1457 .vidioc_s_input = vidioc_s_input,
1458 .vidioc_queryctrl = vidioc_queryctrl,
1459 .vidioc_g_ctrl = vidioc_g_ctrl,
1460 .vidioc_s_ctrl = vidioc_s_ctrl,
1461 .vidioc_streamon = vidioc_streamon,
1462 .vidioc_streamoff = vidioc_streamoff,
1463#ifdef CONFIG_VIDEO_V4L1_COMPAT
1464 .vidiocgmbuf = vidiocgmbuf,
1465#endif
1466 .vidioc_g_tuner = vidioc_g_tuner,
1467 .vidioc_s_tuner = vidioc_s_tuner,
1468 .vidioc_g_frequency = vidioc_g_frequency,
1469 .vidioc_s_frequency = vidioc_s_frequency,
1470#ifdef CONFIG_VIDEO_ADV_DEBUG
1471 .vidioc_g_register = vidioc_g_register,
1472 .vidioc_s_register = vidioc_s_register,
1473#endif
1474 .tvnorms = CX23885_NORMS,
1475 .current_norm = V4L2_STD_NTSC_M,
1476};
1477
1478static const struct file_operations radio_fops = {
1479 .owner = THIS_MODULE,
1480 .open = video_open,
1481 .release = video_release,
1482 .ioctl = video_ioctl2,
1483 .compat_ioctl = v4l_compat_ioctl32,
1484 .llseek = no_llseek,
1485};
1486
1487
1488void cx23885_video_unregister(struct cx23885_dev *dev)
1489{
1490 dprintk(1, "%s()\n", __FUNCTION__);
1491 cx_clear(PCI_INT_MSK, 1);
1492
1493 if (dev->video_dev) {
1494 if (-1 != dev->video_dev->minor)
1495 video_unregister_device(dev->video_dev);
1496 else
1497 video_device_release(dev->video_dev);
1498 dev->video_dev = NULL;
1499
1500 btcx_riscmem_free(dev->pci, &dev->vidq.stopper);
1501 }
1502}
1503
1504int cx23885_video_register(struct cx23885_dev *dev)
1505{
1506 int err;
1507
1508 dprintk(1, "%s()\n", __FUNCTION__);
1509 spin_lock_init(&dev->slock);
1510
1511 /* Initialize VBI template */
1512 memcpy(&cx23885_vbi_template, &cx23885_video_template,
1513 sizeof(cx23885_vbi_template));
1514 strcpy(cx23885_vbi_template.name, "cx23885-vbi");
1515 cx23885_vbi_template.type = VID_TYPE_TELETEXT|VID_TYPE_TUNER;
1516
1517 dev->tvnorm = cx23885_video_template.current_norm;
1518
1519 /* init video dma queues */
1520 INIT_LIST_HEAD(&dev->vidq.active);
1521 INIT_LIST_HEAD(&dev->vidq.queued);
1522 dev->vidq.timeout.function = cx23885_vid_timeout;
1523 dev->vidq.timeout.data = (unsigned long)dev;
1524 init_timer(&dev->vidq.timeout);
1525 cx23885_risc_stopper(dev->pci, &dev->vidq.stopper,
1526 VID_A_DMA_CTL, 0x11, 0x00);
1527
a19602f2 1528 /* Don't enable VBI yet */
e47f30b1
ST		 1529 cx_set(PCI_INT_MSK, 1);
1530
1531
1532 /* register v4l devices */
1533 dev->video_dev = cx23885_vdev_init(dev, dev->pci,
1534 &cx23885_video_template, "video");
1535 err = video_register_device(dev->video_dev, VFL_TYPE_GRABBER,
1536 video_nr[dev->nr]);
1537 if (err < 0) {
1538 printk(KERN_INFO "%s: can't register video device\n",
1539 dev->name);
1540 goto fail_unreg;
1541 }
1542 printk(KERN_INFO "%s/0: registered device video%d [v4l2]\n",
1543 dev->name, dev->video_dev->minor & 0x1f);
1544 /* initial device configuration */
1545 mutex_lock(&dev->lock);
1546 cx23885_set_tvnorm(dev, dev->tvnorm);
1547 init_controls(dev);
1548 cx23885_video_mux(dev, 0);
1549 mutex_unlock(&dev->lock);
1550
e47f30b1
ST		 1551 return 0;
1552
1553fail_unreg:
1554 cx23885_video_unregister(dev);
1555 return err;
1556}
1557
kernel source for telekom puls (alcatel/mediatek)