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cfq-iosched: fix use-after-free of cfqq
[deliverable/linux.git] / drivers / media / video / cx23885 / cx23885-video.c
1 /*
2 * Driver for the Conexant CX23885 PCIe bridge
3 *
4 * Copyright (c) 2007 Steven Toth <stoth@linuxtv.org>
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 #include <media/v4l2-ioctl.h>
37 #include "cx23885-ioctl.h"
38 #include "tuner-xc2028.h"
39
40 #include <media/cx25840.h>
41
42 MODULE_DESCRIPTION("v4l2 driver module for cx23885 based TV cards");
43 MODULE_AUTHOR("Steven Toth <stoth@linuxtv.org>");
44 MODULE_LICENSE("GPL");
45
46 /* ------------------------------------------------------------------ */
47
48 static unsigned int video_nr[] = {[0 ... (CX23885_MAXBOARDS - 1)] = UNSET };
49 static unsigned int vbi_nr[] = {[0 ... (CX23885_MAXBOARDS - 1)] = UNSET };
50 static unsigned int radio_nr[] = {[0 ... (CX23885_MAXBOARDS - 1)] = UNSET };
51
52 module_param_array(video_nr, int, NULL, 0444);
53 module_param_array(vbi_nr, int, NULL, 0444);
54 module_param_array(radio_nr, int, NULL, 0444);
55
56 MODULE_PARM_DESC(video_nr, "video device numbers");
57 MODULE_PARM_DESC(vbi_nr, "vbi device numbers");
58 MODULE_PARM_DESC(radio_nr, "radio device numbers");
59
60 static unsigned int video_debug;
61 module_param(video_debug, int, 0644);
62 MODULE_PARM_DESC(video_debug, "enable debug messages [video]");
63
64 static unsigned int irq_debug;
65 module_param(irq_debug, int, 0644);
66 MODULE_PARM_DESC(irq_debug, "enable debug messages [IRQ handler]");
67
68 static unsigned int vid_limit = 16;
69 module_param(vid_limit, int, 0644);
70 MODULE_PARM_DESC(vid_limit, "capture memory limit in megabytes");
71
72 #define dprintk(level, fmt, arg...)\
73 do { if (video_debug >= level)\
74 printk(KERN_DEBUG "%s: " fmt, dev->name, ## arg);\
75 } while (0)
76
77 /* ------------------------------------------------------------------- */
78 /* static data */
79
80 #define FORMAT_FLAGS_PACKED 0x01
81 #if 0
82 static 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 #else
136 static struct cx23885_fmt formats[] = {
137 {
138 #if 0
139 .name = "4:2:2, packed, UYVY",
140 .fourcc = V4L2_PIX_FMT_UYVY,
141 .depth = 16,
142 .flags = FORMAT_FLAGS_PACKED,
143 }, {
144 #endif
145 .name = "4:2:2, packed, YUYV",
146 .fourcc = V4L2_PIX_FMT_YUYV,
147 .depth = 16,
148 .flags = FORMAT_FLAGS_PACKED,
149 }
150 };
151 #endif
152
153 static struct cx23885_fmt *format_by_fourcc(unsigned int fourcc)
154 {
155 unsigned int i;
156
157 for (i = 0; i < ARRAY_SIZE(formats); i++)
158 if (formats[i].fourcc == fourcc)
159 return formats+i;
160
161 printk(KERN_ERR "%s(%c%c%c%c) NOT FOUND\n", __func__,
162 (fourcc & 0xff),
163 ((fourcc >> 8) & 0xff),
164 ((fourcc >> 16) & 0xff),
165 ((fourcc >> 24) & 0xff)
166 );
167 return NULL;
168 }
169
170 /* ------------------------------------------------------------------- */
171
172 static const struct v4l2_queryctrl no_ctl = {
173 .name = "42",
174 .flags = V4L2_CTRL_FLAG_DISABLED,
175 };
176
177 static struct cx23885_ctrl cx23885_ctls[] = {
178 /* --- video --- */
179 {
180 .v = {
181 .id = V4L2_CID_BRIGHTNESS,
182 .name = "Brightness",
183 .minimum = 0x00,
184 .maximum = 0xff,
185 .step = 1,
186 .default_value = 0x7f,
187 .type = V4L2_CTRL_TYPE_INTEGER,
188 },
189 .off = 128,
190 .reg = LUMA_CTRL,
191 .mask = 0x00ff,
192 .shift = 0,
193 }, {
194 .v = {
195 .id = V4L2_CID_CONTRAST,
196 .name = "Contrast",
197 .minimum = 0,
198 .maximum = 0x7f,
199 .step = 1,
200 .default_value = 0x3f,
201 .type = V4L2_CTRL_TYPE_INTEGER,
202 },
203 .off = 0,
204 .reg = LUMA_CTRL,
205 .mask = 0xff00,
206 .shift = 8,
207 }, {
208 .v = {
209 .id = V4L2_CID_HUE,
210 .name = "Hue",
211 .minimum = -127,
212 .maximum = 128,
213 .step = 1,
214 .default_value = 0x0,
215 .type = V4L2_CTRL_TYPE_INTEGER,
216 },
217 .off = 128,
218 .reg = CHROMA_CTRL,
219 .mask = 0xff0000,
220 .shift = 16,
221 }, {
222 /* strictly, this only describes only U saturation.
223 * V saturation is handled specially through code.
224 */
225 .v = {
226 .id = V4L2_CID_SATURATION,
227 .name = "Saturation",
228 .minimum = 0,
229 .maximum = 0x7f,
230 .step = 1,
231 .default_value = 0x3f,
232 .type = V4L2_CTRL_TYPE_INTEGER,
233 },
234 .off = 0,
235 .reg = CHROMA_CTRL,
236 .mask = 0x00ff,
237 .shift = 0,
238 }, {
239 /* --- audio --- */
240 .v = {
241 .id = V4L2_CID_AUDIO_MUTE,
242 .name = "Mute",
243 .minimum = 0,
244 .maximum = 1,
245 .default_value = 1,
246 .type = V4L2_CTRL_TYPE_BOOLEAN,
247 },
248 .reg = PATH1_CTL1,
249 .mask = (0x1f << 24),
250 .shift = 24,
251 }, {
252 .v = {
253 .id = V4L2_CID_AUDIO_VOLUME,
254 .name = "Volume",
255 .minimum = 0,
256 .maximum = 0x3f,
257 .step = 1,
258 .default_value = 0x3f,
259 .type = V4L2_CTRL_TYPE_INTEGER,
260 },
261 .reg = PATH1_VOL_CTL,
262 .mask = 0xff,
263 .shift = 0,
264 }
265 };
266 static const int CX23885_CTLS = ARRAY_SIZE(cx23885_ctls);
267
268 /* Must be sorted from low to high control ID! */
269 static const u32 cx23885_user_ctrls[] = {
270 V4L2_CID_USER_CLASS,
271 V4L2_CID_BRIGHTNESS,
272 V4L2_CID_CONTRAST,
273 V4L2_CID_SATURATION,
274 V4L2_CID_HUE,
275 V4L2_CID_AUDIO_VOLUME,
276 V4L2_CID_AUDIO_MUTE,
277 0
278 };
279
280 static const u32 *ctrl_classes[] = {
281 cx23885_user_ctrls,
282 NULL
283 };
284
285 void cx23885_video_wakeup(struct cx23885_dev *dev,
286 struct cx23885_dmaqueue *q, u32 count)
287 {
288 struct cx23885_buffer *buf;
289 int bc;
290
291 for (bc = 0;; bc++) {
292 if (list_empty(&q->active))
293 break;
294 buf = list_entry(q->active.next,
295 struct cx23885_buffer, vb.queue);
296
297 /* count comes from the hw and is is 16bit wide --
298 * this trick handles wrap-arounds correctly for
299 * up to 32767 buffers in flight... */
300 if ((s16) (count - buf->count) < 0)
301 break;
302
303 do_gettimeofday(&buf->vb.ts);
304 dprintk(2, "[%p/%d] wakeup reg=%d buf=%d\n", buf, buf->vb.i,
305 count, buf->count);
306 buf->vb.state = VIDEOBUF_DONE;
307 list_del(&buf->vb.queue);
308 wake_up(&buf->vb.done);
309 }
310 if (list_empty(&q->active))
311 del_timer(&q->timeout);
312 else
313 mod_timer(&q->timeout, jiffies+BUFFER_TIMEOUT);
314 if (bc != 1)
315 printk(KERN_ERR "%s: %d buffers handled (should be 1)\n",
316 __func__, bc);
317 }
318
319 static int cx23885_set_tvnorm(struct cx23885_dev *dev, v4l2_std_id norm)
320 {
321 dprintk(1, "%s(norm = 0x%08x) name: [%s]\n",
322 __func__,
323 (unsigned int)norm,
324 v4l2_norm_to_name(norm));
325
326 dev->tvnorm = norm;
327
328 call_all(dev, core, s_std, norm);
329
330 return 0;
331 }
332
333 static struct video_device *cx23885_vdev_init(struct cx23885_dev *dev,
334 struct pci_dev *pci,
335 struct video_device *template,
336 char *type)
337 {
338 struct video_device *vfd;
339 dprintk(1, "%s()\n", __func__);
340
341 vfd = video_device_alloc();
342 if (NULL == vfd)
343 return NULL;
344 *vfd = *template;
345 vfd->v4l2_dev = &dev->v4l2_dev;
346 vfd->release = video_device_release;
347 snprintf(vfd->name, sizeof(vfd->name), "%s %s (%s)",
348 dev->name, type, cx23885_boards[dev->board].name);
349 video_set_drvdata(vfd, dev);
350 return vfd;
351 }
352
353 static int cx23885_ctrl_query(struct v4l2_queryctrl *qctrl)
354 {
355 int i;
356
357 if (qctrl->id < V4L2_CID_BASE ||
358 qctrl->id >= V4L2_CID_LASTP1)
359 return -EINVAL;
360 for (i = 0; i < CX23885_CTLS; i++)
361 if (cx23885_ctls[i].v.id == qctrl->id)
362 break;
363 if (i == CX23885_CTLS) {
364 *qctrl = no_ctl;
365 return 0;
366 }
367 *qctrl = cx23885_ctls[i].v;
368 return 0;
369 }
370
371 /* ------------------------------------------------------------------- */
372 /* resource management */
373
374 static int res_get(struct cx23885_dev *dev, struct cx23885_fh *fh,
375 unsigned int bit)
376 {
377 dprintk(1, "%s()\n", __func__);
378 if (fh->resources & bit)
379 /* have it already allocated */
380 return 1;
381
382 /* is it free? */
383 mutex_lock(&dev->lock);
384 if (dev->resources & bit) {
385 /* no, someone else uses it */
386 mutex_unlock(&dev->lock);
387 return 0;
388 }
389 /* it's free, grab it */
390 fh->resources |= bit;
391 dev->resources |= bit;
392 dprintk(1, "res: get %d\n", bit);
393 mutex_unlock(&dev->lock);
394 return 1;
395 }
396
397 static int res_check(struct cx23885_fh *fh, unsigned int bit)
398 {
399 return fh->resources & bit;
400 }
401
402 static int res_locked(struct cx23885_dev *dev, unsigned int bit)
403 {
404 return dev->resources & bit;
405 }
406
407 static void res_free(struct cx23885_dev *dev, struct cx23885_fh *fh,
408 unsigned int bits)
409 {
410 BUG_ON((fh->resources & bits) != bits);
411 dprintk(1, "%s()\n", __func__);
412
413 mutex_lock(&dev->lock);
414 fh->resources &= ~bits;
415 dev->resources &= ~bits;
416 dprintk(1, "res: put %d\n", bits);
417 mutex_unlock(&dev->lock);
418 }
419
420 static int cx23885_flatiron_write(struct cx23885_dev *dev, u8 reg, u8 data)
421 {
422 /* 8 bit registers, 8 bit values */
423 u8 buf[] = { reg, data };
424
425 struct i2c_msg msg = { .addr = 0x98 >> 1,
426 .flags = 0, .buf = buf, .len = 2 };
427
428 return i2c_transfer(&dev->i2c_bus[2].i2c_adap, &msg, 1);
429 }
430
431 static u8 cx23885_flatiron_read(struct cx23885_dev *dev, u8 reg)
432 {
433 /* 8 bit registers, 8 bit values */
434 int ret;
435 u8 b0[] = { reg };
436 u8 b1[] = { 0 };
437
438 struct i2c_msg msg[] = {
439 { .addr = 0x98 >> 1, .flags = 0, .buf = b0, .len = 1 },
440 { .addr = 0x98 >> 1, .flags = I2C_M_RD, .buf = b1, .len = 1 }
441 };
442
443 ret = i2c_transfer(&dev->i2c_bus[2].i2c_adap, &msg[0], 2);
444 if (ret != 2)
445 printk(KERN_ERR "%s() error\n", __func__);
446
447 return b1[0];
448 }
449
450 static void cx23885_flatiron_dump(struct cx23885_dev *dev)
451 {
452 int i;
453 dprintk(1, "Flatiron dump\n");
454 for (i = 0; i < 0x24; i++) {
455 dprintk(1, "FI[%02x] = %02x\n", i,
456 cx23885_flatiron_read(dev, i));
457 }
458 }
459
460 static int cx23885_flatiron_mux(struct cx23885_dev *dev, int input)
461 {
462 u8 val;
463 dprintk(1, "%s(input = %d)\n", __func__, input);
464
465 if (input == 1)
466 val = cx23885_flatiron_read(dev, CH_PWR_CTRL1) & ~FLD_CH_SEL;
467 else if (input == 2)
468 val = cx23885_flatiron_read(dev, CH_PWR_CTRL1) | FLD_CH_SEL;
469 else
470 return -EINVAL;
471
472 val |= 0x20; /* Enable clock to delta-sigma and dec filter */
473
474 cx23885_flatiron_write(dev, CH_PWR_CTRL1, val);
475
476 /* Wake up */
477 cx23885_flatiron_write(dev, CH_PWR_CTRL2, 0);
478
479 if (video_debug)
480 cx23885_flatiron_dump(dev);
481
482 return 0;
483 }
484
485 static int cx23885_video_mux(struct cx23885_dev *dev, unsigned int input)
486 {
487 dprintk(1, "%s() video_mux: %d [vmux=%d, gpio=0x%x,0x%x,0x%x,0x%x]\n",
488 __func__,
489 input, INPUT(input)->vmux,
490 INPUT(input)->gpio0, INPUT(input)->gpio1,
491 INPUT(input)->gpio2, INPUT(input)->gpio3);
492 dev->input = input;
493
494 if (dev->board == CX23885_BOARD_MYGICA_X8506 ||
495 dev->board == CX23885_BOARD_MAGICPRO_PROHDTVE2) {
496 /* Select Analog TV */
497 if (INPUT(input)->type == CX23885_VMUX_TELEVISION)
498 cx23885_gpio_clear(dev, GPIO_0);
499 }
500
501 /* Tell the internal A/V decoder */
502 v4l2_subdev_call(dev->sd_cx25840, video, s_routing,
503 INPUT(input)->vmux, 0, 0);
504
505 if ((dev->board == CX23885_BOARD_HAUPPAUGE_HVR1800) ||
506 (dev->board == CX23885_BOARD_MPX885)) {
507 /* Configure audio routing */
508 v4l2_subdev_call(dev->sd_cx25840, audio, s_routing,
509 INPUT(input)->amux, 0, 0);
510
511 if (INPUT(input)->amux == CX25840_AUDIO7)
512 cx23885_flatiron_mux(dev, 1);
513 else if (INPUT(input)->amux == CX25840_AUDIO6)
514 cx23885_flatiron_mux(dev, 2);
515 }
516
517 return 0;
518 }
519
520 static int cx23885_audio_mux(struct cx23885_dev *dev, unsigned int input)
521 {
522 dprintk(1, "%s(input=%d)\n", __func__, input);
523
524 /* The baseband video core of the cx23885 has two audio inputs.
525 * LR1 and LR2. In almost every single case so far only HVR1xxx
526 * cards we've only ever supported LR1. Time to support LR2,
527 * which is available via the optional white breakout header on
528 * the board.
529 * We'll use a could of existing enums in the card struct to allow
530 * devs to specify which baseband input they need, or just default
531 * to what we've always used.
532 */
533 if (INPUT(input)->amux == CX25840_AUDIO7)
534 cx23885_flatiron_mux(dev, 1);
535 else if (INPUT(input)->amux == CX25840_AUDIO6)
536 cx23885_flatiron_mux(dev, 2);
537 else {
538 /* Not specifically defined, assume the default. */
539 cx23885_flatiron_mux(dev, 1);
540 }
541
542 return 0;
543 }
544
545 /* ------------------------------------------------------------------ */
546 static int cx23885_start_video_dma(struct cx23885_dev *dev,
547 struct cx23885_dmaqueue *q,
548 struct cx23885_buffer *buf)
549 {
550 dprintk(1, "%s()\n", __func__);
551
552 /* Stop the dma/fifo before we tamper with it's risc programs */
553 cx_clear(VID_A_DMA_CTL, 0x11);
554
555 /* setup fifo + format */
556 cx23885_sram_channel_setup(dev, &dev->sram_channels[SRAM_CH01],
557 buf->bpl, buf->risc.dma);
558
559 /* reset counter */
560 cx_write(VID_A_GPCNT_CTL, 3);
561 q->count = 1;
562
563 /* enable irq */
564 cx23885_irq_add_enable(dev, 0x01);
565 cx_set(VID_A_INT_MSK, 0x000011);
566
567 /* start dma */
568 cx_set(DEV_CNTRL2, (1<<5));
569 cx_set(VID_A_DMA_CTL, 0x11); /* FIFO and RISC enable */
570
571 return 0;
572 }
573
574
575 static int cx23885_restart_video_queue(struct cx23885_dev *dev,
576 struct cx23885_dmaqueue *q)
577 {
578 struct cx23885_buffer *buf, *prev;
579 struct list_head *item;
580 dprintk(1, "%s()\n", __func__);
581
582 if (!list_empty(&q->active)) {
583 buf = list_entry(q->active.next, struct cx23885_buffer,
584 vb.queue);
585 dprintk(2, "restart_queue [%p/%d]: restart dma\n",
586 buf, buf->vb.i);
587 cx23885_start_video_dma(dev, q, buf);
588 list_for_each(item, &q->active) {
589 buf = list_entry(item, struct cx23885_buffer,
590 vb.queue);
591 buf->count = q->count++;
592 }
593 mod_timer(&q->timeout, jiffies+BUFFER_TIMEOUT);
594 return 0;
595 }
596
597 prev = NULL;
598 for (;;) {
599 if (list_empty(&q->queued))
600 return 0;
601 buf = list_entry(q->queued.next, struct cx23885_buffer,
602 vb.queue);
603 if (NULL == prev) {
604 list_move_tail(&buf->vb.queue, &q->active);
605 cx23885_start_video_dma(dev, q, buf);
606 buf->vb.state = VIDEOBUF_ACTIVE;
607 buf->count = q->count++;
608 mod_timer(&q->timeout, jiffies+BUFFER_TIMEOUT);
609 dprintk(2, "[%p/%d] restart_queue - first active\n",
610 buf, buf->vb.i);
611
612 } else if (prev->vb.width == buf->vb.width &&
613 prev->vb.height == buf->vb.height &&
614 prev->fmt == buf->fmt) {
615 list_move_tail(&buf->vb.queue, &q->active);
616 buf->vb.state = VIDEOBUF_ACTIVE;
617 buf->count = q->count++;
618 prev->risc.jmp[1] = cpu_to_le32(buf->risc.dma);
619 prev->risc.jmp[2] = cpu_to_le32(0); /* Bits 63 - 32 */
620 dprintk(2, "[%p/%d] restart_queue - move to active\n",
621 buf, buf->vb.i);
622 } else {
623 return 0;
624 }
625 prev = buf;
626 }
627 }
628
629 static int buffer_setup(struct videobuf_queue *q, unsigned int *count,
630 unsigned int *size)
631 {
632 struct cx23885_fh *fh = q->priv_data;
633
634 *size = fh->fmt->depth*fh->width*fh->height >> 3;
635 if (0 == *count)
636 *count = 32;
637 if (*size * *count > vid_limit * 1024 * 1024)
638 *count = (vid_limit * 1024 * 1024) / *size;
639 return 0;
640 }
641
642 static int buffer_prepare(struct videobuf_queue *q, struct videobuf_buffer *vb,
643 enum v4l2_field field)
644 {
645 struct cx23885_fh *fh = q->priv_data;
646 struct cx23885_dev *dev = fh->dev;
647 struct cx23885_buffer *buf =
648 container_of(vb, struct cx23885_buffer, vb);
649 int rc, init_buffer = 0;
650 u32 line0_offset, line1_offset;
651 struct videobuf_dmabuf *dma = videobuf_to_dma(&buf->vb);
652
653 BUG_ON(NULL == fh->fmt);
654 if (fh->width < 48 || fh->width > norm_maxw(dev->tvnorm) ||
655 fh->height < 32 || fh->height > norm_maxh(dev->tvnorm))
656 return -EINVAL;
657 buf->vb.size = (fh->width * fh->height * fh->fmt->depth) >> 3;
658 if (0 != buf->vb.baddr && buf->vb.bsize < buf->vb.size)
659 return -EINVAL;
660
661 if (buf->fmt != fh->fmt ||
662 buf->vb.width != fh->width ||
663 buf->vb.height != fh->height ||
664 buf->vb.field != field) {
665 buf->fmt = fh->fmt;
666 buf->vb.width = fh->width;
667 buf->vb.height = fh->height;
668 buf->vb.field = field;
669 init_buffer = 1;
670 }
671
672 if (VIDEOBUF_NEEDS_INIT == buf->vb.state) {
673 init_buffer = 1;
674 rc = videobuf_iolock(q, &buf->vb, NULL);
675 if (0 != rc)
676 goto fail;
677 }
678
679 if (init_buffer) {
680 buf->bpl = buf->vb.width * buf->fmt->depth >> 3;
681 switch (buf->vb.field) {
682 case V4L2_FIELD_TOP:
683 cx23885_risc_buffer(dev->pci, &buf->risc,
684 dma->sglist, 0, UNSET,
685 buf->bpl, 0, buf->vb.height);
686 break;
687 case V4L2_FIELD_BOTTOM:
688 cx23885_risc_buffer(dev->pci, &buf->risc,
689 dma->sglist, UNSET, 0,
690 buf->bpl, 0, buf->vb.height);
691 break;
692 case V4L2_FIELD_INTERLACED:
693 if (dev->tvnorm & V4L2_STD_NTSC) {
694 /* cx25840 transmits NTSC bottom field first */
695 dprintk(1, "%s() Creating NTSC risc\n",
696 __func__);
697 line0_offset = buf->bpl;
698 line1_offset = 0;
699 } else {
700 /* All other formats are top field first */
701 dprintk(1, "%s() Creating PAL/SECAM risc\n",
702 __func__);
703 line0_offset = 0;
704 line1_offset = buf->bpl;
705 }
706 cx23885_risc_buffer(dev->pci, &buf->risc,
707 dma->sglist, line0_offset,
708 line1_offset,
709 buf->bpl, buf->bpl,
710 buf->vb.height >> 1);
711 break;
712 case V4L2_FIELD_SEQ_TB:
713 cx23885_risc_buffer(dev->pci, &buf->risc,
714 dma->sglist,
715 0, buf->bpl * (buf->vb.height >> 1),
716 buf->bpl, 0,
717 buf->vb.height >> 1);
718 break;
719 case V4L2_FIELD_SEQ_BT:
720 cx23885_risc_buffer(dev->pci, &buf->risc,
721 dma->sglist,
722 buf->bpl * (buf->vb.height >> 1), 0,
723 buf->bpl, 0,
724 buf->vb.height >> 1);
725 break;
726 default:
727 BUG();
728 }
729 }
730 dprintk(2, "[%p/%d] buffer_prep - %dx%d %dbpp \"%s\" - dma=0x%08lx\n",
731 buf, buf->vb.i,
732 fh->width, fh->height, fh->fmt->depth, fh->fmt->name,
733 (unsigned long)buf->risc.dma);
734
735 buf->vb.state = VIDEOBUF_PREPARED;
736 return 0;
737
738 fail:
739 cx23885_free_buffer(q, buf);
740 return rc;
741 }
742
743 static void buffer_queue(struct videobuf_queue *vq, struct videobuf_buffer *vb)
744 {
745 struct cx23885_buffer *buf = container_of(vb,
746 struct cx23885_buffer, vb);
747 struct cx23885_buffer *prev;
748 struct cx23885_fh *fh = vq->priv_data;
749 struct cx23885_dev *dev = fh->dev;
750 struct cx23885_dmaqueue *q = &dev->vidq;
751
752 /* add jump to stopper */
753 buf->risc.jmp[0] = cpu_to_le32(RISC_JUMP | RISC_IRQ1 | RISC_CNT_INC);
754 buf->risc.jmp[1] = cpu_to_le32(q->stopper.dma);
755 buf->risc.jmp[2] = cpu_to_le32(0); /* bits 63-32 */
756
757 if (!list_empty(&q->queued)) {
758 list_add_tail(&buf->vb.queue, &q->queued);
759 buf->vb.state = VIDEOBUF_QUEUED;
760 dprintk(2, "[%p/%d] buffer_queue - append to queued\n",
761 buf, buf->vb.i);
762
763 } else if (list_empty(&q->active)) {
764 list_add_tail(&buf->vb.queue, &q->active);
765 cx23885_start_video_dma(dev, q, buf);
766 buf->vb.state = VIDEOBUF_ACTIVE;
767 buf->count = q->count++;
768 mod_timer(&q->timeout, jiffies+BUFFER_TIMEOUT);
769 dprintk(2, "[%p/%d] buffer_queue - first active\n",
770 buf, buf->vb.i);
771
772 } else {
773 prev = list_entry(q->active.prev, struct cx23885_buffer,
774 vb.queue);
775 if (prev->vb.width == buf->vb.width &&
776 prev->vb.height == buf->vb.height &&
777 prev->fmt == buf->fmt) {
778 list_add_tail(&buf->vb.queue, &q->active);
779 buf->vb.state = VIDEOBUF_ACTIVE;
780 buf->count = q->count++;
781 prev->risc.jmp[1] = cpu_to_le32(buf->risc.dma);
782 /* 64 bit bits 63-32 */
783 prev->risc.jmp[2] = cpu_to_le32(0);
784 dprintk(2, "[%p/%d] buffer_queue - append to active\n",
785 buf, buf->vb.i);
786
787 } else {
788 list_add_tail(&buf->vb.queue, &q->queued);
789 buf->vb.state = VIDEOBUF_QUEUED;
790 dprintk(2, "[%p/%d] buffer_queue - first queued\n",
791 buf, buf->vb.i);
792 }
793 }
794 }
795
796 static void buffer_release(struct videobuf_queue *q,
797 struct videobuf_buffer *vb)
798 {
799 struct cx23885_buffer *buf = container_of(vb,
800 struct cx23885_buffer, vb);
801
802 cx23885_free_buffer(q, buf);
803 }
804
805 static struct videobuf_queue_ops cx23885_video_qops = {
806 .buf_setup = buffer_setup,
807 .buf_prepare = buffer_prepare,
808 .buf_queue = buffer_queue,
809 .buf_release = buffer_release,
810 };
811
812 static struct videobuf_queue *get_queue(struct cx23885_fh *fh)
813 {
814 switch (fh->type) {
815 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
816 return &fh->vidq;
817 case V4L2_BUF_TYPE_VBI_CAPTURE:
818 return &fh->vbiq;
819 default:
820 BUG();
821 return NULL;
822 }
823 }
824
825 static int get_resource(struct cx23885_fh *fh)
826 {
827 switch (fh->type) {
828 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
829 return RESOURCE_VIDEO;
830 case V4L2_BUF_TYPE_VBI_CAPTURE:
831 return RESOURCE_VBI;
832 default:
833 BUG();
834 return 0;
835 }
836 }
837
838 static int video_open(struct file *file)
839 {
840 struct video_device *vdev = video_devdata(file);
841 struct cx23885_dev *dev = video_drvdata(file);
842 struct cx23885_fh *fh;
843 enum v4l2_buf_type type = 0;
844 int radio = 0;
845
846 switch (vdev->vfl_type) {
847 case VFL_TYPE_GRABBER:
848 type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
849 break;
850 case VFL_TYPE_VBI:
851 type = V4L2_BUF_TYPE_VBI_CAPTURE;
852 break;
853 case VFL_TYPE_RADIO:
854 radio = 1;
855 break;
856 }
857
858 dprintk(1, "open dev=%s radio=%d type=%s\n",
859 video_device_node_name(vdev), radio, v4l2_type_names[type]);
860
861 /* allocate + initialize per filehandle data */
862 fh = kzalloc(sizeof(*fh), GFP_KERNEL);
863 if (NULL == fh)
864 return -ENOMEM;
865
866 file->private_data = fh;
867 fh->dev = dev;
868 fh->radio = radio;
869 fh->type = type;
870 fh->width = 320;
871 fh->height = 240;
872 fh->fmt = format_by_fourcc(V4L2_PIX_FMT_YUYV);
873
874 videobuf_queue_sg_init(&fh->vidq, &cx23885_video_qops,
875 &dev->pci->dev, &dev->slock,
876 V4L2_BUF_TYPE_VIDEO_CAPTURE,
877 V4L2_FIELD_INTERLACED,
878 sizeof(struct cx23885_buffer),
879 fh, NULL);
880
881 videobuf_queue_sg_init(&fh->vbiq, &cx23885_vbi_qops,
882 &dev->pci->dev, &dev->slock,
883 V4L2_BUF_TYPE_VBI_CAPTURE,
884 V4L2_FIELD_SEQ_TB,
885 sizeof(struct cx23885_buffer),
886 fh, NULL);
887
888
889 dprintk(1, "post videobuf_queue_init()\n");
890
891 return 0;
892 }
893
894 static ssize_t video_read(struct file *file, char __user *data,
895 size_t count, loff_t *ppos)
896 {
897 struct cx23885_fh *fh = file->private_data;
898
899 switch (fh->type) {
900 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
901 if (res_locked(fh->dev, RESOURCE_VIDEO))
902 return -EBUSY;
903 return videobuf_read_one(&fh->vidq, data, count, ppos,
904 file->f_flags & O_NONBLOCK);
905 case V4L2_BUF_TYPE_VBI_CAPTURE:
906 if (!res_get(fh->dev, fh, RESOURCE_VBI))
907 return -EBUSY;
908 return videobuf_read_stream(&fh->vbiq, data, count, ppos, 1,
909 file->f_flags & O_NONBLOCK);
910 default:
911 BUG();
912 return 0;
913 }
914 }
915
916 static unsigned int video_poll(struct file *file,
917 struct poll_table_struct *wait)
918 {
919 struct cx23885_fh *fh = file->private_data;
920 struct cx23885_buffer *buf;
921 unsigned int rc = POLLERR;
922
923 if (V4L2_BUF_TYPE_VBI_CAPTURE == fh->type) {
924 if (!res_get(fh->dev, fh, RESOURCE_VBI))
925 return POLLERR;
926 return videobuf_poll_stream(file, &fh->vbiq, wait);
927 }
928
929 mutex_lock(&fh->vidq.vb_lock);
930 if (res_check(fh, RESOURCE_VIDEO)) {
931 /* streaming capture */
932 if (list_empty(&fh->vidq.stream))
933 goto done;
934 buf = list_entry(fh->vidq.stream.next,
935 struct cx23885_buffer, vb.stream);
936 } else {
937 /* read() capture */
938 buf = (struct cx23885_buffer *)fh->vidq.read_buf;
939 if (NULL == buf)
940 goto done;
941 }
942 poll_wait(file, &buf->vb.done, wait);
943 if (buf->vb.state == VIDEOBUF_DONE ||
944 buf->vb.state == VIDEOBUF_ERROR)
945 rc = POLLIN|POLLRDNORM;
946 else
947 rc = 0;
948 done:
949 mutex_unlock(&fh->vidq.vb_lock);
950 return rc;
951 }
952
953 static int video_release(struct file *file)
954 {
955 struct cx23885_fh *fh = file->private_data;
956 struct cx23885_dev *dev = fh->dev;
957
958 /* turn off overlay */
959 if (res_check(fh, RESOURCE_OVERLAY)) {
960 /* FIXME */
961 res_free(dev, fh, RESOURCE_OVERLAY);
962 }
963
964 /* stop video capture */
965 if (res_check(fh, RESOURCE_VIDEO)) {
966 videobuf_queue_cancel(&fh->vidq);
967 res_free(dev, fh, RESOURCE_VIDEO);
968 }
969 if (fh->vidq.read_buf) {
970 buffer_release(&fh->vidq, fh->vidq.read_buf);
971 kfree(fh->vidq.read_buf);
972 }
973
974 /* stop vbi capture */
975 if (res_check(fh, RESOURCE_VBI)) {
976 if (fh->vbiq.streaming)
977 videobuf_streamoff(&fh->vbiq);
978 if (fh->vbiq.reading)
979 videobuf_read_stop(&fh->vbiq);
980 res_free(dev, fh, RESOURCE_VBI);
981 }
982
983 videobuf_mmap_free(&fh->vidq);
984 file->private_data = NULL;
985 kfree(fh);
986
987 /* We are not putting the tuner to sleep here on exit, because
988 * we want to use the mpeg encoder in another session to capture
989 * tuner video. Closing this will result in no video to the encoder.
990 */
991
992 return 0;
993 }
994
995 static int video_mmap(struct file *file, struct vm_area_struct *vma)
996 {
997 struct cx23885_fh *fh = file->private_data;
998
999 return videobuf_mmap_mapper(get_queue(fh), vma);
1000 }
1001
1002 /* ------------------------------------------------------------------ */
1003 /* VIDEO CTRL IOCTLS */
1004
1005 static int cx23885_get_control(struct cx23885_dev *dev,
1006 struct v4l2_control *ctl)
1007 {
1008 dprintk(1, "%s() calling cx25840(VIDIOC_G_CTRL)\n", __func__);
1009 call_all(dev, core, g_ctrl, ctl);
1010 return 0;
1011 }
1012
1013 static int cx23885_set_control(struct cx23885_dev *dev,
1014 struct v4l2_control *ctl)
1015 {
1016 dprintk(1, "%s() calling cx25840(VIDIOC_S_CTRL)\n", __func__);
1017 call_all(dev, core, s_ctrl, ctl);
1018
1019 return 0;
1020 }
1021
1022 static void init_controls(struct cx23885_dev *dev)
1023 {
1024 struct v4l2_control ctrl;
1025 int i;
1026
1027 for (i = 0; i < CX23885_CTLS; i++) {
1028 ctrl.id = cx23885_ctls[i].v.id;
1029 ctrl.value = cx23885_ctls[i].v.default_value;
1030
1031 cx23885_set_control(dev, &ctrl);
1032 }
1033 }
1034
1035 /* ------------------------------------------------------------------ */
1036 /* VIDEO IOCTLS */
1037
1038 static int vidioc_g_fmt_vid_cap(struct file *file, void *priv,
1039 struct v4l2_format *f)
1040 {
1041 struct cx23885_fh *fh = priv;
1042
1043 f->fmt.pix.width = fh->width;
1044 f->fmt.pix.height = fh->height;
1045 f->fmt.pix.field = fh->vidq.field;
1046 f->fmt.pix.pixelformat = fh->fmt->fourcc;
1047 f->fmt.pix.bytesperline =
1048 (f->fmt.pix.width * fh->fmt->depth) >> 3;
1049 f->fmt.pix.sizeimage =
1050 f->fmt.pix.height * f->fmt.pix.bytesperline;
1051
1052 return 0;
1053 }
1054
1055 static int vidioc_try_fmt_vid_cap(struct file *file, void *priv,
1056 struct v4l2_format *f)
1057 {
1058 struct cx23885_dev *dev = ((struct cx23885_fh *)priv)->dev;
1059 struct cx23885_fmt *fmt;
1060 enum v4l2_field field;
1061 unsigned int maxw, maxh;
1062
1063 fmt = format_by_fourcc(f->fmt.pix.pixelformat);
1064 if (NULL == fmt)
1065 return -EINVAL;
1066
1067 field = f->fmt.pix.field;
1068 maxw = norm_maxw(dev->tvnorm);
1069 maxh = norm_maxh(dev->tvnorm);
1070
1071 if (V4L2_FIELD_ANY == field) {
1072 field = (f->fmt.pix.height > maxh/2)
1073 ? V4L2_FIELD_INTERLACED
1074 : V4L2_FIELD_BOTTOM;
1075 }
1076
1077 switch (field) {
1078 case V4L2_FIELD_TOP:
1079 case V4L2_FIELD_BOTTOM:
1080 maxh = maxh / 2;
1081 break;
1082 case V4L2_FIELD_INTERLACED:
1083 break;
1084 default:
1085 return -EINVAL;
1086 }
1087
1088 f->fmt.pix.field = field;
1089 v4l_bound_align_image(&f->fmt.pix.width, 48, maxw, 2,
1090 &f->fmt.pix.height, 32, maxh, 0, 0);
1091 f->fmt.pix.bytesperline =
1092 (f->fmt.pix.width * fmt->depth) >> 3;
1093 f->fmt.pix.sizeimage =
1094 f->fmt.pix.height * f->fmt.pix.bytesperline;
1095
1096 return 0;
1097 }
1098
1099 static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
1100 struct v4l2_format *f)
1101 {
1102 struct cx23885_fh *fh = priv;
1103 struct cx23885_dev *dev = ((struct cx23885_fh *)priv)->dev;
1104 struct v4l2_mbus_framefmt mbus_fmt;
1105 int err;
1106
1107 dprintk(2, "%s()\n", __func__);
1108 err = vidioc_try_fmt_vid_cap(file, priv, f);
1109
1110 if (0 != err)
1111 return err;
1112 fh->fmt = format_by_fourcc(f->fmt.pix.pixelformat);
1113 fh->width = f->fmt.pix.width;
1114 fh->height = f->fmt.pix.height;
1115 fh->vidq.field = f->fmt.pix.field;
1116 dprintk(2, "%s() width=%d height=%d field=%d\n", __func__,
1117 fh->width, fh->height, fh->vidq.field);
1118 v4l2_fill_mbus_format(&mbus_fmt, &f->fmt.pix, V4L2_MBUS_FMT_FIXED);
1119 call_all(dev, video, s_mbus_fmt, &mbus_fmt);
1120 v4l2_fill_pix_format(&f->fmt.pix, &mbus_fmt);
1121 return 0;
1122 }
1123
1124 static int vidioc_querycap(struct file *file, void *priv,
1125 struct v4l2_capability *cap)
1126 {
1127 struct cx23885_dev *dev = ((struct cx23885_fh *)priv)->dev;
1128
1129 strcpy(cap->driver, "cx23885");
1130 strlcpy(cap->card, cx23885_boards[dev->board].name,
1131 sizeof(cap->card));
1132 sprintf(cap->bus_info, "PCIe:%s", pci_name(dev->pci));
1133 cap->capabilities =
1134 V4L2_CAP_VIDEO_CAPTURE |
1135 V4L2_CAP_READWRITE |
1136 V4L2_CAP_STREAMING |
1137 V4L2_CAP_VBI_CAPTURE;
1138 if (UNSET != dev->tuner_type)
1139 cap->capabilities |= V4L2_CAP_TUNER;
1140 return 0;
1141 }
1142
1143 static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv,
1144 struct v4l2_fmtdesc *f)
1145 {
1146 if (unlikely(f->index >= ARRAY_SIZE(formats)))
1147 return -EINVAL;
1148
1149 strlcpy(f->description, formats[f->index].name,
1150 sizeof(f->description));
1151 f->pixelformat = formats[f->index].fourcc;
1152
1153 return 0;
1154 }
1155
1156 static int vidioc_reqbufs(struct file *file, void *priv,
1157 struct v4l2_requestbuffers *p)
1158 {
1159 struct cx23885_fh *fh = priv;
1160 return videobuf_reqbufs(get_queue(fh), p);
1161 }
1162
1163 static int vidioc_querybuf(struct file *file, void *priv,
1164 struct v4l2_buffer *p)
1165 {
1166 struct cx23885_fh *fh = priv;
1167 return videobuf_querybuf(get_queue(fh), p);
1168 }
1169
1170 static int vidioc_qbuf(struct file *file, void *priv,
1171 struct v4l2_buffer *p)
1172 {
1173 struct cx23885_fh *fh = priv;
1174 return videobuf_qbuf(get_queue(fh), p);
1175 }
1176
1177 static int vidioc_dqbuf(struct file *file, void *priv,
1178 struct v4l2_buffer *p)
1179 {
1180 struct cx23885_fh *fh = priv;
1181 return videobuf_dqbuf(get_queue(fh), p,
1182 file->f_flags & O_NONBLOCK);
1183 }
1184
1185 static int vidioc_streamon(struct file *file, void *priv,
1186 enum v4l2_buf_type i)
1187 {
1188 struct cx23885_fh *fh = priv;
1189 struct cx23885_dev *dev = fh->dev;
1190 dprintk(1, "%s()\n", __func__);
1191
1192 if ((fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) &&
1193 (fh->type != V4L2_BUF_TYPE_VBI_CAPTURE))
1194 return -EINVAL;
1195 if (unlikely(i != fh->type))
1196 return -EINVAL;
1197
1198 if (unlikely(!res_get(dev, fh, get_resource(fh))))
1199 return -EBUSY;
1200
1201 /* Don't start VBI streaming unless vida streaming
1202 * has already started.
1203 */
1204 if ((fh->type == V4L2_BUF_TYPE_VBI_CAPTURE) &&
1205 ((cx_read(VID_A_DMA_CTL) & 0x11) == 0))
1206 return -EINVAL;
1207
1208 return videobuf_streamon(get_queue(fh));
1209 }
1210
1211 static int vidioc_streamoff(struct file *file, void *priv, enum v4l2_buf_type i)
1212 {
1213 struct cx23885_fh *fh = priv;
1214 struct cx23885_dev *dev = fh->dev;
1215 int err, res;
1216 dprintk(1, "%s()\n", __func__);
1217
1218 if ((fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) &&
1219 (fh->type != V4L2_BUF_TYPE_VBI_CAPTURE))
1220 return -EINVAL;
1221 if (i != fh->type)
1222 return -EINVAL;
1223
1224 res = get_resource(fh);
1225 err = videobuf_streamoff(get_queue(fh));
1226 if (err < 0)
1227 return err;
1228 res_free(dev, fh, res);
1229 return 0;
1230 }
1231
1232 static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id *tvnorms)
1233 {
1234 struct cx23885_dev *dev = ((struct cx23885_fh *)priv)->dev;
1235 dprintk(1, "%s()\n", __func__);
1236
1237 mutex_lock(&dev->lock);
1238 cx23885_set_tvnorm(dev, *tvnorms);
1239 mutex_unlock(&dev->lock);
1240
1241 return 0;
1242 }
1243
1244 static int cx23885_enum_input(struct cx23885_dev *dev, struct v4l2_input *i)
1245 {
1246 static const char *iname[] = {
1247 [CX23885_VMUX_COMPOSITE1] = "Composite1",
1248 [CX23885_VMUX_COMPOSITE2] = "Composite2",
1249 [CX23885_VMUX_COMPOSITE3] = "Composite3",
1250 [CX23885_VMUX_COMPOSITE4] = "Composite4",
1251 [CX23885_VMUX_SVIDEO] = "S-Video",
1252 [CX23885_VMUX_COMPONENT] = "Component",
1253 [CX23885_VMUX_TELEVISION] = "Television",
1254 [CX23885_VMUX_CABLE] = "Cable TV",
1255 [CX23885_VMUX_DVB] = "DVB",
1256 [CX23885_VMUX_DEBUG] = "for debug only",
1257 };
1258 unsigned int n;
1259 dprintk(1, "%s()\n", __func__);
1260
1261 n = i->index;
1262 if (n >= MAX_CX23885_INPUT)
1263 return -EINVAL;
1264
1265 if (0 == INPUT(n)->type)
1266 return -EINVAL;
1267
1268 i->index = n;
1269 i->type = V4L2_INPUT_TYPE_CAMERA;
1270 strcpy(i->name, iname[INPUT(n)->type]);
1271 if ((CX23885_VMUX_TELEVISION == INPUT(n)->type) ||
1272 (CX23885_VMUX_CABLE == INPUT(n)->type)) {
1273 i->type = V4L2_INPUT_TYPE_TUNER;
1274 i->std = CX23885_NORMS;
1275 }
1276
1277 /* Two selectable audio inputs for non-tv inputs */
1278 if (INPUT(n)->type != CX23885_VMUX_TELEVISION)
1279 i->audioset = 0x3;
1280
1281 return 0;
1282 }
1283
1284 static int vidioc_enum_input(struct file *file, void *priv,
1285 struct v4l2_input *i)
1286 {
1287 struct cx23885_dev *dev = ((struct cx23885_fh *)priv)->dev;
1288 dprintk(1, "%s()\n", __func__);
1289 return cx23885_enum_input(dev, i);
1290 }
1291
1292 static int vidioc_g_input(struct file *file, void *priv, unsigned int *i)
1293 {
1294 struct cx23885_dev *dev = ((struct cx23885_fh *)priv)->dev;
1295
1296 *i = dev->input;
1297 dprintk(1, "%s() returns %d\n", __func__, *i);
1298 return 0;
1299 }
1300
1301 static int vidioc_s_input(struct file *file, void *priv, unsigned int i)
1302 {
1303 struct cx23885_dev *dev = ((struct cx23885_fh *)priv)->dev;
1304
1305 dprintk(1, "%s(%d)\n", __func__, i);
1306
1307 if (i >= MAX_CX23885_INPUT) {
1308 dprintk(1, "%s() -EINVAL\n", __func__);
1309 return -EINVAL;
1310 }
1311
1312 if (INPUT(i)->type == 0)
1313 return -EINVAL;
1314
1315 mutex_lock(&dev->lock);
1316 cx23885_video_mux(dev, i);
1317
1318 /* By default establish the default audio input for the card also */
1319 /* Caller is free to use VIDIOC_S_AUDIO to override afterwards */
1320 cx23885_audio_mux(dev, i);
1321 mutex_unlock(&dev->lock);
1322 return 0;
1323 }
1324
1325 static int vidioc_log_status(struct file *file, void *priv)
1326 {
1327 struct cx23885_fh *fh = priv;
1328 struct cx23885_dev *dev = fh->dev;
1329
1330 printk(KERN_INFO
1331 "%s/0: ============ START LOG STATUS ============\n",
1332 dev->name);
1333 call_all(dev, core, log_status);
1334 printk(KERN_INFO
1335 "%s/0: ============= END LOG STATUS =============\n",
1336 dev->name);
1337 return 0;
1338 }
1339
1340 static int cx23885_query_audinput(struct file *file, void *priv,
1341 struct v4l2_audio *i)
1342 {
1343 struct cx23885_dev *dev = ((struct cx23885_fh *)priv)->dev;
1344 static const char *iname[] = {
1345 [0] = "Baseband L/R 1",
1346 [1] = "Baseband L/R 2",
1347 };
1348 unsigned int n;
1349 dprintk(1, "%s()\n", __func__);
1350
1351 n = i->index;
1352 if (n >= 2)
1353 return -EINVAL;
1354
1355 memset(i, 0, sizeof(*i));
1356 i->index = n;
1357 strcpy(i->name, iname[n]);
1358 i->capability = V4L2_AUDCAP_STEREO;
1359 i->mode = V4L2_AUDMODE_AVL;
1360 return 0;
1361
1362 }
1363
1364 static int vidioc_enum_audinput(struct file *file, void *priv,
1365 struct v4l2_audio *i)
1366 {
1367 return cx23885_query_audinput(file, priv, i);
1368 }
1369
1370 static int vidioc_g_audinput(struct file *file, void *priv,
1371 struct v4l2_audio *i)
1372 {
1373 struct cx23885_dev *dev = ((struct cx23885_fh *)priv)->dev;
1374
1375 i->index = dev->audinput;
1376 dprintk(1, "%s(input=%d)\n", __func__, i->index);
1377
1378 return cx23885_query_audinput(file, priv, i);
1379 }
1380
1381 static int vidioc_s_audinput(struct file *file, void *priv,
1382 struct v4l2_audio *i)
1383 {
1384 struct cx23885_dev *dev = ((struct cx23885_fh *)priv)->dev;
1385 if (i->index >= 2)
1386 return -EINVAL;
1387
1388 dprintk(1, "%s(%d)\n", __func__, i->index);
1389
1390 dev->audinput = i->index;
1391
1392 /* Skip the audio defaults from the cards struct, caller wants
1393 * directly touch the audio mux hardware. */
1394 cx23885_flatiron_mux(dev, dev->audinput + 1);
1395 return 0;
1396 }
1397
1398 static int vidioc_queryctrl(struct file *file, void *priv,
1399 struct v4l2_queryctrl *qctrl)
1400 {
1401 qctrl->id = v4l2_ctrl_next(ctrl_classes, qctrl->id);
1402 if (unlikely(qctrl->id == 0))
1403 return -EINVAL;
1404 return cx23885_ctrl_query(qctrl);
1405 }
1406
1407 static int vidioc_g_ctrl(struct file *file, void *priv,
1408 struct v4l2_control *ctl)
1409 {
1410 struct cx23885_dev *dev = ((struct cx23885_fh *)priv)->dev;
1411
1412 return cx23885_get_control(dev, ctl);
1413 }
1414
1415 static int vidioc_s_ctrl(struct file *file, void *priv,
1416 struct v4l2_control *ctl)
1417 {
1418 struct cx23885_dev *dev = ((struct cx23885_fh *)priv)->dev;
1419
1420 return cx23885_set_control(dev, ctl);
1421 }
1422
1423 static int vidioc_g_tuner(struct file *file, void *priv,
1424 struct v4l2_tuner *t)
1425 {
1426 struct cx23885_dev *dev = ((struct cx23885_fh *)priv)->dev;
1427
1428 if (unlikely(UNSET == dev->tuner_type))
1429 return -EINVAL;
1430 if (0 != t->index)
1431 return -EINVAL;
1432
1433 strcpy(t->name, "Television");
1434
1435 call_all(dev, tuner, g_tuner, t);
1436 return 0;
1437 }
1438
1439 static int vidioc_s_tuner(struct file *file, void *priv,
1440 struct v4l2_tuner *t)
1441 {
1442 struct cx23885_dev *dev = ((struct cx23885_fh *)priv)->dev;
1443
1444 if (UNSET == dev->tuner_type)
1445 return -EINVAL;
1446 if (0 != t->index)
1447 return -EINVAL;
1448 /* Update the A/V core */
1449 call_all(dev, tuner, s_tuner, t);
1450
1451 return 0;
1452 }
1453
1454 static int vidioc_g_frequency(struct file *file, void *priv,
1455 struct v4l2_frequency *f)
1456 {
1457 struct cx23885_fh *fh = priv;
1458 struct cx23885_dev *dev = fh->dev;
1459
1460 if (unlikely(UNSET == dev->tuner_type))
1461 return -EINVAL;
1462
1463 /* f->type = fh->radio ? V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV; */
1464 f->type = fh->radio ? V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
1465 f->frequency = dev->freq;
1466
1467 call_all(dev, tuner, g_frequency, f);
1468
1469 return 0;
1470 }
1471
1472 static int cx23885_set_freq(struct cx23885_dev *dev, struct v4l2_frequency *f)
1473 {
1474 if (unlikely(UNSET == dev->tuner_type))
1475 return -EINVAL;
1476 if (unlikely(f->tuner != 0))
1477 return -EINVAL;
1478
1479 mutex_lock(&dev->lock);
1480 dev->freq = f->frequency;
1481
1482 call_all(dev, tuner, s_frequency, f);
1483
1484 /* When changing channels it is required to reset TVAUDIO */
1485 msleep(10);
1486
1487 mutex_unlock(&dev->lock);
1488
1489 return 0;
1490 }
1491
1492 static int vidioc_s_frequency(struct file *file, void *priv,
1493 struct v4l2_frequency *f)
1494 {
1495 struct cx23885_fh *fh = priv;
1496 struct cx23885_dev *dev = fh->dev;
1497
1498 if (unlikely(0 == fh->radio && f->type != V4L2_TUNER_ANALOG_TV))
1499 return -EINVAL;
1500 if (unlikely(1 == fh->radio && f->type != V4L2_TUNER_RADIO))
1501 return -EINVAL;
1502
1503 return
1504 cx23885_set_freq(dev, f);
1505 }
1506
1507 /* ----------------------------------------------------------- */
1508
1509 static void cx23885_vid_timeout(unsigned long data)
1510 {
1511 struct cx23885_dev *dev = (struct cx23885_dev *)data;
1512 struct cx23885_dmaqueue *q = &dev->vidq;
1513 struct cx23885_buffer *buf;
1514 unsigned long flags;
1515
1516 spin_lock_irqsave(&dev->slock, flags);
1517 while (!list_empty(&q->active)) {
1518 buf = list_entry(q->active.next,
1519 struct cx23885_buffer, vb.queue);
1520 list_del(&buf->vb.queue);
1521 buf->vb.state = VIDEOBUF_ERROR;
1522 wake_up(&buf->vb.done);
1523 printk(KERN_ERR "%s: [%p/%d] timeout - dma=0x%08lx\n",
1524 dev->name, buf, buf->vb.i,
1525 (unsigned long)buf->risc.dma);
1526 }
1527 cx23885_restart_video_queue(dev, q);
1528 spin_unlock_irqrestore(&dev->slock, flags);
1529 }
1530
1531 int cx23885_video_irq(struct cx23885_dev *dev, u32 status)
1532 {
1533 u32 mask, count;
1534 int handled = 0;
1535
1536 mask = cx_read(VID_A_INT_MSK);
1537 if (0 == (status & mask))
1538 return handled;
1539
1540 cx_write(VID_A_INT_STAT, status);
1541
1542 /* risc op code error, fifo overflow or line sync detection error */
1543 if ((status & VID_BC_MSK_OPC_ERR) ||
1544 (status & VID_BC_MSK_SYNC) ||
1545 (status & VID_BC_MSK_OF)) {
1546
1547 if (status & VID_BC_MSK_OPC_ERR) {
1548 dprintk(7, " (VID_BC_MSK_OPC_ERR 0x%08x)\n",
1549 VID_BC_MSK_OPC_ERR);
1550 printk(KERN_WARNING "%s: video risc op code error\n",
1551 dev->name);
1552 cx23885_sram_channel_dump(dev,
1553 &dev->sram_channels[SRAM_CH01]);
1554 }
1555
1556 if (status & VID_BC_MSK_SYNC)
1557 dprintk(7, " (VID_BC_MSK_SYNC 0x%08x) "
1558 "video lines miss-match\n",
1559 VID_BC_MSK_SYNC);
1560
1561 if (status & VID_BC_MSK_OF)
1562 dprintk(7, " (VID_BC_MSK_OF 0x%08x) fifo overflow\n",
1563 VID_BC_MSK_OF);
1564
1565 }
1566
1567 /* Video */
1568 if (status & VID_BC_MSK_RISCI1) {
1569 spin_lock(&dev->slock);
1570 count = cx_read(VID_A_GPCNT);
1571 cx23885_video_wakeup(dev, &dev->vidq, count);
1572 spin_unlock(&dev->slock);
1573 handled++;
1574 }
1575 if (status & VID_BC_MSK_RISCI2) {
1576 dprintk(2, "stopper video\n");
1577 spin_lock(&dev->slock);
1578 cx23885_restart_video_queue(dev, &dev->vidq);
1579 spin_unlock(&dev->slock);
1580 handled++;
1581 }
1582
1583 /* Allow the VBI framework to process it's payload */
1584 handled += cx23885_vbi_irq(dev, status);
1585
1586 return handled;
1587 }
1588
1589 /* ----------------------------------------------------------- */
1590 /* exported stuff */
1591
1592 static const struct v4l2_file_operations video_fops = {
1593 .owner = THIS_MODULE,
1594 .open = video_open,
1595 .release = video_release,
1596 .read = video_read,
1597 .poll = video_poll,
1598 .mmap = video_mmap,
1599 .ioctl = video_ioctl2,
1600 };
1601
1602 static const struct v4l2_ioctl_ops video_ioctl_ops = {
1603 .vidioc_querycap = vidioc_querycap,
1604 .vidioc_enum_fmt_vid_cap = vidioc_enum_fmt_vid_cap,
1605 .vidioc_g_fmt_vid_cap = vidioc_g_fmt_vid_cap,
1606 .vidioc_try_fmt_vid_cap = vidioc_try_fmt_vid_cap,
1607 .vidioc_s_fmt_vid_cap = vidioc_s_fmt_vid_cap,
1608 .vidioc_g_fmt_vbi_cap = cx23885_vbi_fmt,
1609 .vidioc_try_fmt_vbi_cap = cx23885_vbi_fmt,
1610 .vidioc_s_fmt_vbi_cap = cx23885_vbi_fmt,
1611 .vidioc_reqbufs = vidioc_reqbufs,
1612 .vidioc_querybuf = vidioc_querybuf,
1613 .vidioc_qbuf = vidioc_qbuf,
1614 .vidioc_dqbuf = vidioc_dqbuf,
1615 .vidioc_s_std = vidioc_s_std,
1616 .vidioc_enum_input = vidioc_enum_input,
1617 .vidioc_g_input = vidioc_g_input,
1618 .vidioc_s_input = vidioc_s_input,
1619 .vidioc_log_status = vidioc_log_status,
1620 .vidioc_queryctrl = vidioc_queryctrl,
1621 .vidioc_g_ctrl = vidioc_g_ctrl,
1622 .vidioc_s_ctrl = vidioc_s_ctrl,
1623 .vidioc_streamon = vidioc_streamon,
1624 .vidioc_streamoff = vidioc_streamoff,
1625 .vidioc_g_tuner = vidioc_g_tuner,
1626 .vidioc_s_tuner = vidioc_s_tuner,
1627 .vidioc_g_frequency = vidioc_g_frequency,
1628 .vidioc_s_frequency = vidioc_s_frequency,
1629 .vidioc_g_chip_ident = cx23885_g_chip_ident,
1630 #ifdef CONFIG_VIDEO_ADV_DEBUG
1631 .vidioc_g_register = cx23885_g_register,
1632 .vidioc_s_register = cx23885_s_register,
1633 #endif
1634 .vidioc_enumaudio = vidioc_enum_audinput,
1635 .vidioc_g_audio = vidioc_g_audinput,
1636 .vidioc_s_audio = vidioc_s_audinput,
1637 };
1638
1639 static struct video_device cx23885_vbi_template;
1640 static struct video_device cx23885_video_template = {
1641 .name = "cx23885-video",
1642 .fops = &video_fops,
1643 .ioctl_ops = &video_ioctl_ops,
1644 .tvnorms = CX23885_NORMS,
1645 .current_norm = V4L2_STD_NTSC_M,
1646 };
1647
1648 static const struct v4l2_file_operations radio_fops = {
1649 .owner = THIS_MODULE,
1650 .open = video_open,
1651 .release = video_release,
1652 .ioctl = video_ioctl2,
1653 };
1654
1655
1656 void cx23885_video_unregister(struct cx23885_dev *dev)
1657 {
1658 dprintk(1, "%s()\n", __func__);
1659 cx23885_irq_remove(dev, 0x01);
1660
1661 if (dev->vbi_dev) {
1662 if (video_is_registered(dev->vbi_dev))
1663 video_unregister_device(dev->vbi_dev);
1664 else
1665 video_device_release(dev->vbi_dev);
1666 dev->vbi_dev = NULL;
1667 btcx_riscmem_free(dev->pci, &dev->vbiq.stopper);
1668 }
1669 if (dev->video_dev) {
1670 if (video_is_registered(dev->video_dev))
1671 video_unregister_device(dev->video_dev);
1672 else
1673 video_device_release(dev->video_dev);
1674 dev->video_dev = NULL;
1675
1676 btcx_riscmem_free(dev->pci, &dev->vidq.stopper);
1677 }
1678
1679 if (dev->audio_dev)
1680 cx23885_audio_unregister(dev);
1681 }
1682
1683 int cx23885_video_register(struct cx23885_dev *dev)
1684 {
1685 int err;
1686
1687 dprintk(1, "%s()\n", __func__);
1688 spin_lock_init(&dev->slock);
1689
1690 /* Initialize VBI template */
1691 memcpy(&cx23885_vbi_template, &cx23885_video_template,
1692 sizeof(cx23885_vbi_template));
1693 strcpy(cx23885_vbi_template.name, "cx23885-vbi");
1694
1695 dev->tvnorm = cx23885_video_template.current_norm;
1696
1697 /* init video dma queues */
1698 INIT_LIST_HEAD(&dev->vidq.active);
1699 INIT_LIST_HEAD(&dev->vidq.queued);
1700 dev->vidq.timeout.function = cx23885_vid_timeout;
1701 dev->vidq.timeout.data = (unsigned long)dev;
1702 init_timer(&dev->vidq.timeout);
1703 cx23885_risc_stopper(dev->pci, &dev->vidq.stopper,
1704 VID_A_DMA_CTL, 0x11, 0x00);
1705
1706 /* init vbi dma queues */
1707 INIT_LIST_HEAD(&dev->vbiq.active);
1708 INIT_LIST_HEAD(&dev->vbiq.queued);
1709 dev->vbiq.timeout.function = cx23885_vbi_timeout;
1710 dev->vbiq.timeout.data = (unsigned long)dev;
1711 init_timer(&dev->vbiq.timeout);
1712 cx23885_risc_stopper(dev->pci, &dev->vbiq.stopper,
1713 VID_A_DMA_CTL, 0x22, 0x00);
1714
1715 cx23885_irq_add_enable(dev, 0x01);
1716
1717 if ((TUNER_ABSENT != dev->tuner_type) &&
1718 ((dev->tuner_bus == 0) || (dev->tuner_bus == 1))) {
1719 struct v4l2_subdev *sd = NULL;
1720
1721 if (dev->tuner_addr)
1722 sd = v4l2_i2c_new_subdev(&dev->v4l2_dev,
1723 &dev->i2c_bus[dev->tuner_bus].i2c_adap,
1724 "tuner", dev->tuner_addr, NULL);
1725 else
1726 sd = v4l2_i2c_new_subdev(&dev->v4l2_dev,
1727 &dev->i2c_bus[dev->tuner_bus].i2c_adap,
1728 "tuner", 0, v4l2_i2c_tuner_addrs(ADDRS_TV));
1729 if (sd) {
1730 struct tuner_setup tun_setup;
1731
1732 memset(&tun_setup, 0, sizeof(tun_setup));
1733 tun_setup.mode_mask = T_ANALOG_TV;
1734 tun_setup.type = dev->tuner_type;
1735 tun_setup.addr = v4l2_i2c_subdev_addr(sd);
1736 tun_setup.tuner_callback = cx23885_tuner_callback;
1737
1738 v4l2_subdev_call(sd, tuner, s_type_addr, &tun_setup);
1739
1740 if (dev->board == CX23885_BOARD_LEADTEK_WINFAST_PXTV1200) {
1741 struct xc2028_ctrl ctrl = {
1742 .fname = XC2028_DEFAULT_FIRMWARE,
1743 .max_len = 64
1744 };
1745 struct v4l2_priv_tun_config cfg = {
1746 .tuner = dev->tuner_type,
1747 .priv = &ctrl
1748 };
1749 v4l2_subdev_call(sd, tuner, s_config, &cfg);
1750 }
1751 }
1752 }
1753
1754 /* register Video device */
1755 dev->video_dev = cx23885_vdev_init(dev, dev->pci,
1756 &cx23885_video_template, "video");
1757 err = video_register_device(dev->video_dev, VFL_TYPE_GRABBER,
1758 video_nr[dev->nr]);
1759 if (err < 0) {
1760 printk(KERN_INFO "%s: can't register video device\n",
1761 dev->name);
1762 goto fail_unreg;
1763 }
1764 printk(KERN_INFO "%s: registered device %s [v4l2]\n",
1765 dev->name, video_device_node_name(dev->video_dev));
1766
1767 /* register VBI device */
1768 dev->vbi_dev = cx23885_vdev_init(dev, dev->pci,
1769 &cx23885_vbi_template, "vbi");
1770 err = video_register_device(dev->vbi_dev, VFL_TYPE_VBI,
1771 vbi_nr[dev->nr]);
1772 if (err < 0) {
1773 printk(KERN_INFO "%s: can't register vbi device\n",
1774 dev->name);
1775 goto fail_unreg;
1776 }
1777 printk(KERN_INFO "%s: registered device %s\n",
1778 dev->name, video_device_node_name(dev->vbi_dev));
1779
1780 /* Register ALSA audio device */
1781 dev->audio_dev = cx23885_audio_register(dev);
1782
1783 /* initial device configuration */
1784 mutex_lock(&dev->lock);
1785 cx23885_set_tvnorm(dev, dev->tvnorm);
1786 init_controls(dev);
1787 cx23885_video_mux(dev, 0);
1788 cx23885_audio_mux(dev, 0);
1789 mutex_unlock(&dev->lock);
1790
1791 return 0;
1792
1793 fail_unreg:
1794 cx23885_video_unregister(dev);
1795 return err;
1796 }
1797
Linux kernel - Deliverables
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