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1// SPDX-License-Identifier: GPL-2.0-or-later2/*3 cx231xx-video.c - driver for Conexant Cx23100/101/1024 USB video capture devices5 6 Copyright (C) 2008 <srinivasa.deevi at conexant dot com>7 Based on em28xx driver8 Based on cx23885 driver9 Based on cx88 driver10 11 */12 13#include "cx231xx.h"14#include <linux/init.h>15#include <linux/list.h>16#include <linux/module.h>17#include <linux/kernel.h>18#include <linux/bitmap.h>19#include <linux/i2c.h>20#include <linux/mm.h>21#include <linux/mutex.h>22#include <linux/slab.h>23 24#include <media/v4l2-common.h>25#include <media/v4l2-ioctl.h>26#include <media/v4l2-event.h>27#include <media/drv-intf/msp3400.h>28#include <media/tuner.h>29 30#include <media/dvb_frontend.h>31 32#include "cx231xx-vbi.h"33 34#define CX231XX_VERSION "0.0.3"35 36#define DRIVER_AUTHOR "Srinivasa Deevi <srinivasa.deevi@conexant.com>"37#define DRIVER_DESC "Conexant cx231xx based USB video device driver"38 39#define cx231xx_videodbg(fmt, arg...) do {\40 if (video_debug) \41 printk(KERN_INFO "%s %s :"fmt, \42 dev->name, __func__ , ##arg); } while (0)43 44static unsigned int isoc_debug;45module_param(isoc_debug, int, 0644);46MODULE_PARM_DESC(isoc_debug, "enable debug messages [isoc transfers]");47 48#define cx231xx_isocdbg(fmt, arg...) \49do {\50 if (isoc_debug) { \51 printk(KERN_INFO "%s %s :"fmt, \52 dev->name, __func__ , ##arg); \53 } \54 } while (0)55 56MODULE_AUTHOR(DRIVER_AUTHOR);57MODULE_DESCRIPTION(DRIVER_DESC);58MODULE_LICENSE("GPL");59MODULE_VERSION(CX231XX_VERSION);60 61static unsigned int card[] = {[0 ... (CX231XX_MAXBOARDS - 1)] = -1U };62static unsigned int video_nr[] = {[0 ... (CX231XX_MAXBOARDS - 1)] = -1U };63static unsigned int vbi_nr[] = {[0 ... (CX231XX_MAXBOARDS - 1)] = -1U };64static unsigned int radio_nr[] = {[0 ... (CX231XX_MAXBOARDS - 1)] = -1U };65 66module_param_array(card, int, NULL, 0444);67module_param_array(video_nr, int, NULL, 0444);68module_param_array(vbi_nr, int, NULL, 0444);69module_param_array(radio_nr, int, NULL, 0444);70 71MODULE_PARM_DESC(card, "card type");72MODULE_PARM_DESC(video_nr, "video device numbers");73MODULE_PARM_DESC(vbi_nr, "vbi device numbers");74MODULE_PARM_DESC(radio_nr, "radio device numbers");75 76static unsigned int video_debug;77module_param(video_debug, int, 0644);78MODULE_PARM_DESC(video_debug, "enable debug messages [video]");79 80/* supported video standards */81static struct cx231xx_fmt format[] = {82 {83 .fourcc = V4L2_PIX_FMT_YUYV,84 .depth = 16,85 .reg = 0,86 },87};88 89 90static int cx231xx_enable_analog_tuner(struct cx231xx *dev)91{92#ifdef CONFIG_MEDIA_CONTROLLER93 struct media_device *mdev = dev->media_dev;94 struct media_entity *entity, *decoder = NULL, *source;95 struct media_link *link, *found_link = NULL;96 int ret, active_links = 0;97 98 if (!mdev)99 return 0;100 101 /*102 * This will find the tuner that is connected into the decoder.103 * Technically, this is not 100% correct, as the device may be104 * using an analog input instead of the tuner. However, as we can't105 * do DVB streaming while the DMA engine is being used for V4L2,106 * this should be enough for the actual needs.107 */108 media_device_for_each_entity(entity, mdev) {109 if (entity->function == MEDIA_ENT_F_ATV_DECODER) {110 decoder = entity;111 break;112 }113 }114 if (!decoder)115 return 0;116 117 list_for_each_entry(link, &decoder->links, list) {118 if (link->sink->entity == decoder) {119 found_link = link;120 if (link->flags & MEDIA_LNK_FL_ENABLED)121 active_links++;122 break;123 }124 }125 126 if (active_links == 1 || !found_link)127 return 0;128 129 source = found_link->source->entity;130 list_for_each_entry(link, &source->links, list) {131 struct media_entity *sink;132 int flags = 0;133 134 sink = link->sink->entity;135 136 if (sink == entity)137 flags = MEDIA_LNK_FL_ENABLED;138 139 ret = media_entity_setup_link(link, flags);140 if (ret) {141 dev_err(dev->dev,142 "Couldn't change link %s->%s to %s. Error %d\n",143 source->name, sink->name,144 flags ? "enabled" : "disabled",145 ret);146 return ret;147 } else148 dev_dbg(dev->dev,149 "link %s->%s was %s\n",150 source->name, sink->name,151 flags ? "ENABLED" : "disabled");152 }153#endif154 return 0;155}156 157/* ------------------------------------------------------------------158 Video buffer and parser functions159 ------------------------------------------------------------------*/160 161/*162 * Announces that a buffer were filled and request the next163 */164static inline void buffer_filled(struct cx231xx *dev,165 struct cx231xx_dmaqueue *dma_q,166 struct cx231xx_buffer *buf)167{168 /* Advice that buffer was filled */169 cx231xx_isocdbg("[%p/%d] wakeup\n", buf, buf->vb.vb2_buf.index);170 buf->vb.sequence = dma_q->sequence++;171 buf->vb.field = V4L2_FIELD_INTERLACED;172 buf->vb.vb2_buf.timestamp = ktime_get_ns();173 vb2_set_plane_payload(&buf->vb.vb2_buf, 0, dev->size);174 175 if (dev->USE_ISO)176 dev->video_mode.isoc_ctl.buf = NULL;177 else178 dev->video_mode.bulk_ctl.buf = NULL;179 180 list_del(&buf->list);181 vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_DONE);182}183 184static inline void print_err_status(struct cx231xx *dev, int packet, int status)185{186 char *errmsg = "Unknown";187 188 switch (status) {189 case -ENOENT:190 errmsg = "unlinked synchronously";191 break;192 case -ECONNRESET:193 errmsg = "unlinked asynchronously";194 break;195 case -ENOSR:196 errmsg = "Buffer error (overrun)";197 break;198 case -EPIPE:199 errmsg = "Stalled (device not responding)";200 break;201 case -EOVERFLOW:202 errmsg = "Babble (bad cable?)";203 break;204 case -EPROTO:205 errmsg = "Bit-stuff error (bad cable?)";206 break;207 case -EILSEQ:208 errmsg = "CRC/Timeout (could be anything)";209 break;210 case -ETIME:211 errmsg = "Device does not respond";212 break;213 }214 if (packet < 0) {215 cx231xx_isocdbg("URB status %d [%s].\n", status, errmsg);216 } else {217 cx231xx_isocdbg("URB packet %d, status %d [%s].\n",218 packet, status, errmsg);219 }220}221 222/*223 * generic routine to get the next available buffer224 */225static inline void get_next_buf(struct cx231xx_dmaqueue *dma_q,226 struct cx231xx_buffer **buf)227{228 struct cx231xx_video_mode *vmode =229 container_of(dma_q, struct cx231xx_video_mode, vidq);230 struct cx231xx *dev = container_of(vmode, struct cx231xx, video_mode);231 232 char *outp;233 234 if (list_empty(&dma_q->active)) {235 cx231xx_isocdbg("No active queue to serve\n");236 if (dev->USE_ISO)237 dev->video_mode.isoc_ctl.buf = NULL;238 else239 dev->video_mode.bulk_ctl.buf = NULL;240 *buf = NULL;241 return;242 }243 244 /* Get the next buffer */245 *buf = list_entry(dma_q->active.next, struct cx231xx_buffer, list);246 247 /* Cleans up buffer - Useful for testing for frame/URB loss */248 outp = vb2_plane_vaddr(&(*buf)->vb.vb2_buf, 0);249 memset(outp, 0, dev->size);250 251 if (dev->USE_ISO)252 dev->video_mode.isoc_ctl.buf = *buf;253 else254 dev->video_mode.bulk_ctl.buf = *buf;255 256 return;257}258 259/*260 * Controls the isoc copy of each urb packet261 */262static inline int cx231xx_isoc_copy(struct cx231xx *dev, struct urb *urb)263{264 struct cx231xx_dmaqueue *dma_q = urb->context;265 int i;266 unsigned char *p_buffer;267 u32 bytes_parsed = 0, buffer_size = 0;268 u8 sav_eav = 0;269 270 if (!dev)271 return 0;272 273 if (dev->state & DEV_DISCONNECTED)274 return 0;275 276 if (urb->status < 0) {277 print_err_status(dev, -1, urb->status);278 if (urb->status == -ENOENT)279 return 0;280 }281 282 for (i = 0; i < urb->number_of_packets; i++) {283 int status = urb->iso_frame_desc[i].status;284 285 if (status < 0) {286 print_err_status(dev, i, status);287 if (urb->iso_frame_desc[i].status != -EPROTO)288 continue;289 }290 291 if (urb->iso_frame_desc[i].actual_length <= 0) {292 /* cx231xx_isocdbg("packet %d is empty",i); - spammy */293 continue;294 }295 if (urb->iso_frame_desc[i].actual_length >296 dev->video_mode.max_pkt_size) {297 cx231xx_isocdbg("packet bigger than packet size");298 continue;299 }300 301 /* get buffer pointer and length */302 p_buffer = urb->transfer_buffer + urb->iso_frame_desc[i].offset;303 buffer_size = urb->iso_frame_desc[i].actual_length;304 bytes_parsed = 0;305 306 if (dma_q->is_partial_line) {307 /* Handle the case of a partial line */308 sav_eav = dma_q->last_sav;309 } else {310 /* Check for a SAV/EAV overlapping311 the buffer boundary */312 sav_eav =313 cx231xx_find_boundary_SAV_EAV(p_buffer,314 dma_q->partial_buf,315 &bytes_parsed);316 }317 318 sav_eav &= 0xF0;319 /* Get the first line if we have some portion of an SAV/EAV from320 the last buffer or a partial line */321 if (sav_eav) {322 bytes_parsed += cx231xx_get_video_line(dev, dma_q,323 sav_eav, /* SAV/EAV */324 p_buffer + bytes_parsed, /* p_buffer */325 buffer_size - bytes_parsed);/* buf size */326 }327 328 /* Now parse data that is completely in this buffer */329 /* dma_q->is_partial_line = 0; */330 331 while (bytes_parsed < buffer_size) {332 u32 bytes_used = 0;333 334 sav_eav = cx231xx_find_next_SAV_EAV(335 p_buffer + bytes_parsed, /* p_buffer */336 buffer_size - bytes_parsed, /* buf size */337 &bytes_used);/* bytes used to get SAV/EAV */338 339 bytes_parsed += bytes_used;340 341 sav_eav &= 0xF0;342 if (sav_eav && (bytes_parsed < buffer_size)) {343 bytes_parsed += cx231xx_get_video_line(dev,344 dma_q, sav_eav, /* SAV/EAV */345 p_buffer + bytes_parsed,/* p_buffer */346 buffer_size - bytes_parsed);/*buf size*/347 }348 }349 350 /* Save the last four bytes of the buffer so we can check the351 buffer boundary condition next time */352 memcpy(dma_q->partial_buf, p_buffer + buffer_size - 4, 4);353 bytes_parsed = 0;354 355 }356 return 1;357}358 359static inline int cx231xx_bulk_copy(struct cx231xx *dev, struct urb *urb)360{361 struct cx231xx_dmaqueue *dma_q = urb->context;362 unsigned char *p_buffer;363 u32 bytes_parsed = 0, buffer_size = 0;364 u8 sav_eav = 0;365 366 if (!dev)367 return 0;368 369 if (dev->state & DEV_DISCONNECTED)370 return 0;371 372 if (urb->status < 0) {373 print_err_status(dev, -1, urb->status);374 if (urb->status == -ENOENT)375 return 0;376 }377 378 if (1) {379 380 /* get buffer pointer and length */381 p_buffer = urb->transfer_buffer;382 buffer_size = urb->actual_length;383 bytes_parsed = 0;384 385 if (dma_q->is_partial_line) {386 /* Handle the case of a partial line */387 sav_eav = dma_q->last_sav;388 } else {389 /* Check for a SAV/EAV overlapping390 the buffer boundary */391 sav_eav =392 cx231xx_find_boundary_SAV_EAV(p_buffer,393 dma_q->partial_buf,394 &bytes_parsed);395 }396 397 sav_eav &= 0xF0;398 /* Get the first line if we have some portion of an SAV/EAV from399 the last buffer or a partial line */400 if (sav_eav) {401 bytes_parsed += cx231xx_get_video_line(dev, dma_q,402 sav_eav, /* SAV/EAV */403 p_buffer + bytes_parsed, /* p_buffer */404 buffer_size - bytes_parsed);/* buf size */405 }406 407 /* Now parse data that is completely in this buffer */408 /* dma_q->is_partial_line = 0; */409 410 while (bytes_parsed < buffer_size) {411 u32 bytes_used = 0;412 413 sav_eav = cx231xx_find_next_SAV_EAV(414 p_buffer + bytes_parsed, /* p_buffer */415 buffer_size - bytes_parsed, /* buf size */416 &bytes_used);/* bytes used to get SAV/EAV */417 418 bytes_parsed += bytes_used;419 420 sav_eav &= 0xF0;421 if (sav_eav && (bytes_parsed < buffer_size)) {422 bytes_parsed += cx231xx_get_video_line(dev,423 dma_q, sav_eav, /* SAV/EAV */424 p_buffer + bytes_parsed,/* p_buffer */425 buffer_size - bytes_parsed);/*buf size*/426 }427 }428 429 /* Save the last four bytes of the buffer so we can check the430 buffer boundary condition next time */431 memcpy(dma_q->partial_buf, p_buffer + buffer_size - 4, 4);432 bytes_parsed = 0;433 434 }435 return 1;436}437 438 439u8 cx231xx_find_boundary_SAV_EAV(u8 *p_buffer, u8 *partial_buf,440 u32 *p_bytes_used)441{442 u32 bytes_used;443 u8 boundary_bytes[8];444 u8 sav_eav = 0;445 446 *p_bytes_used = 0;447 448 /* Create an array of the last 4 bytes of the last buffer and the first449 4 bytes of the current buffer. */450 451 memcpy(boundary_bytes, partial_buf, 4);452 memcpy(boundary_bytes + 4, p_buffer, 4);453 454 /* Check for the SAV/EAV in the boundary buffer */455 sav_eav = cx231xx_find_next_SAV_EAV((u8 *)&boundary_bytes, 8,456 &bytes_used);457 458 if (sav_eav) {459 /* found a boundary SAV/EAV. Updates the bytes used to reflect460 only those used in the new buffer */461 *p_bytes_used = bytes_used - 4;462 }463 464 return sav_eav;465}466 467u8 cx231xx_find_next_SAV_EAV(u8 *p_buffer, u32 buffer_size, u32 *p_bytes_used)468{469 u32 i;470 u8 sav_eav = 0;471 472 /*473 * Don't search if the buffer size is less than 4. It causes a page474 * fault since buffer_size - 4 evaluates to a large number in that475 * case.476 */477 if (buffer_size < 4) {478 *p_bytes_used = buffer_size;479 return 0;480 }481 482 for (i = 0; i < (buffer_size - 3); i++) {483 484 if ((p_buffer[i] == 0xFF) &&485 (p_buffer[i + 1] == 0x00) && (p_buffer[i + 2] == 0x00)) {486 487 *p_bytes_used = i + 4;488 sav_eav = p_buffer[i + 3];489 return sav_eav;490 }491 }492 493 *p_bytes_used = buffer_size;494 return 0;495}496 497u32 cx231xx_get_video_line(struct cx231xx *dev,498 struct cx231xx_dmaqueue *dma_q, u8 sav_eav,499 u8 *p_buffer, u32 buffer_size)500{501 u32 bytes_copied = 0;502 int current_field = -1;503 504 switch (sav_eav) {505 case SAV_ACTIVE_VIDEO_FIELD1:506 /* looking for skipped line which occurred in PAL 720x480 mode.507 In this case, there will be no active data contained508 between the SAV and EAV */509 if ((buffer_size > 3) && (p_buffer[0] == 0xFF) &&510 (p_buffer[1] == 0x00) && (p_buffer[2] == 0x00) &&511 ((p_buffer[3] == EAV_ACTIVE_VIDEO_FIELD1) ||512 (p_buffer[3] == EAV_ACTIVE_VIDEO_FIELD2) ||513 (p_buffer[3] == EAV_VBLANK_FIELD1) ||514 (p_buffer[3] == EAV_VBLANK_FIELD2)))515 return bytes_copied;516 current_field = 1;517 break;518 519 case SAV_ACTIVE_VIDEO_FIELD2:520 /* looking for skipped line which occurred in PAL 720x480 mode.521 In this case, there will be no active data contained between522 the SAV and EAV */523 if ((buffer_size > 3) && (p_buffer[0] == 0xFF) &&524 (p_buffer[1] == 0x00) && (p_buffer[2] == 0x00) &&525 ((p_buffer[3] == EAV_ACTIVE_VIDEO_FIELD1) ||526 (p_buffer[3] == EAV_ACTIVE_VIDEO_FIELD2) ||527 (p_buffer[3] == EAV_VBLANK_FIELD1) ||528 (p_buffer[3] == EAV_VBLANK_FIELD2)))529 return bytes_copied;530 current_field = 2;531 break;532 }533 534 dma_q->last_sav = sav_eav;535 536 bytes_copied = cx231xx_copy_video_line(dev, dma_q, p_buffer,537 buffer_size, current_field);538 539 return bytes_copied;540}541 542u32 cx231xx_copy_video_line(struct cx231xx *dev,543 struct cx231xx_dmaqueue *dma_q, u8 *p_line,544 u32 length, int field_number)545{546 u32 bytes_to_copy;547 struct cx231xx_buffer *buf;548 u32 _line_size = dev->width * 2;549 550 if (dma_q->current_field != field_number)551 cx231xx_reset_video_buffer(dev, dma_q);552 553 /* get the buffer pointer */554 if (dev->USE_ISO)555 buf = dev->video_mode.isoc_ctl.buf;556 else557 buf = dev->video_mode.bulk_ctl.buf;558 559 /* Remember the field number for next time */560 dma_q->current_field = field_number;561 562 bytes_to_copy = dma_q->bytes_left_in_line;563 if (bytes_to_copy > length)564 bytes_to_copy = length;565 566 if (dma_q->lines_completed >= dma_q->lines_per_field) {567 dma_q->bytes_left_in_line -= bytes_to_copy;568 dma_q->is_partial_line = (dma_q->bytes_left_in_line == 0) ?569 0 : 1;570 return 0;571 }572 573 dma_q->is_partial_line = 1;574 575 /* If we don't have a buffer, just return the number of bytes we would576 have copied if we had a buffer. */577 if (!buf) {578 dma_q->bytes_left_in_line -= bytes_to_copy;579 dma_q->is_partial_line = (dma_q->bytes_left_in_line == 0)580 ? 0 : 1;581 return bytes_to_copy;582 }583 584 /* copy the data to video buffer */585 cx231xx_do_copy(dev, dma_q, p_line, bytes_to_copy);586 587 dma_q->pos += bytes_to_copy;588 dma_q->bytes_left_in_line -= bytes_to_copy;589 590 if (dma_q->bytes_left_in_line == 0) {591 dma_q->bytes_left_in_line = _line_size;592 dma_q->lines_completed++;593 dma_q->is_partial_line = 0;594 595 if (cx231xx_is_buffer_done(dev, dma_q) && buf) {596 buffer_filled(dev, dma_q, buf);597 598 dma_q->pos = 0;599 buf = NULL;600 dma_q->lines_completed = 0;601 }602 }603 604 return bytes_to_copy;605}606 607void cx231xx_reset_video_buffer(struct cx231xx *dev,608 struct cx231xx_dmaqueue *dma_q)609{610 struct cx231xx_buffer *buf;611 612 /* handle the switch from field 1 to field 2 */613 if (dma_q->current_field == 1) {614 if (dma_q->lines_completed >= dma_q->lines_per_field)615 dma_q->field1_done = 1;616 else617 dma_q->field1_done = 0;618 }619 620 if (dev->USE_ISO)621 buf = dev->video_mode.isoc_ctl.buf;622 else623 buf = dev->video_mode.bulk_ctl.buf;624 625 if (buf == NULL) {626 /* first try to get the buffer */627 get_next_buf(dma_q, &buf);628 629 dma_q->pos = 0;630 dma_q->field1_done = 0;631 dma_q->current_field = -1;632 }633 634 /* reset the counters */635 dma_q->bytes_left_in_line = dev->width << 1;636 dma_q->lines_completed = 0;637}638 639int cx231xx_do_copy(struct cx231xx *dev, struct cx231xx_dmaqueue *dma_q,640 u8 *p_buffer, u32 bytes_to_copy)641{642 u8 *p_out_buffer = NULL;643 u32 current_line_bytes_copied = 0;644 struct cx231xx_buffer *buf;645 u32 _line_size = dev->width << 1;646 void *startwrite;647 int offset, lencopy;648 649 if (dev->USE_ISO)650 buf = dev->video_mode.isoc_ctl.buf;651 else652 buf = dev->video_mode.bulk_ctl.buf;653 654 if (buf == NULL)655 return -1;656 657 p_out_buffer = vb2_plane_vaddr(&buf->vb.vb2_buf, 0);658 659 current_line_bytes_copied = _line_size - dma_q->bytes_left_in_line;660 661 /* Offset field 2 one line from the top of the buffer */662 offset = (dma_q->current_field == 1) ? 0 : _line_size;663 664 /* Offset for field 2 */665 startwrite = p_out_buffer + offset;666 667 /* lines already completed in the current field */668 startwrite += (dma_q->lines_completed * _line_size * 2);669 670 /* bytes already completed in the current line */671 startwrite += current_line_bytes_copied;672 673 lencopy = dma_q->bytes_left_in_line > bytes_to_copy ?674 bytes_to_copy : dma_q->bytes_left_in_line;675 676 if ((u8 *)(startwrite + lencopy) > (u8 *)(p_out_buffer + dev->size))677 return 0;678 679 /* The below copies the UYVY data straight into video buffer */680 cx231xx_swab((u16 *) p_buffer, (u16 *) startwrite, (u16) lencopy);681 682 return 0;683}684 685void cx231xx_swab(u16 *from, u16 *to, u16 len)686{687 u16 i;688 689 if (len <= 0)690 return;691 692 for (i = 0; i < len / 2; i++)693 to[i] = (from[i] << 8) | (from[i] >> 8);694}695 696u8 cx231xx_is_buffer_done(struct cx231xx *dev, struct cx231xx_dmaqueue *dma_q)697{698 u8 buffer_complete = 0;699 700 /* Dual field stream */701 buffer_complete = ((dma_q->current_field == 2) &&702 (dma_q->lines_completed >= dma_q->lines_per_field) &&703 dma_q->field1_done);704 705 return buffer_complete;706}707 708/* ------------------------------------------------------------------709 Videobuf operations710 ------------------------------------------------------------------*/711 712static int queue_setup(struct vb2_queue *vq,713 unsigned int *nbuffers, unsigned int *nplanes,714 unsigned int sizes[], struct device *alloc_devs[])715{716 struct cx231xx *dev = vb2_get_drv_priv(vq);717 unsigned int q_num_bufs = vb2_get_num_buffers(vq);718 719 dev->size = (dev->width * dev->height * dev->format->depth + 7) >> 3;720 721 if (q_num_bufs + *nbuffers < CX231XX_MIN_BUF)722 *nbuffers = CX231XX_MIN_BUF - q_num_bufs;723 724 if (*nplanes)725 return sizes[0] < dev->size ? -EINVAL : 0;726 *nplanes = 1;727 sizes[0] = dev->size;728 729 return 0;730}731 732static void buffer_queue(struct vb2_buffer *vb)733{734 struct cx231xx_buffer *buf =735 container_of(vb, struct cx231xx_buffer, vb.vb2_buf);736 struct cx231xx *dev = vb2_get_drv_priv(vb->vb2_queue);737 struct cx231xx_dmaqueue *vidq = &dev->video_mode.vidq;738 unsigned long flags;739 740 spin_lock_irqsave(&dev->video_mode.slock, flags);741 list_add_tail(&buf->list, &vidq->active);742 spin_unlock_irqrestore(&dev->video_mode.slock, flags);743}744 745static void return_all_buffers(struct cx231xx *dev,746 enum vb2_buffer_state state)747{748 struct cx231xx_dmaqueue *vidq = &dev->video_mode.vidq;749 struct cx231xx_buffer *buf, *node;750 unsigned long flags;751 752 spin_lock_irqsave(&dev->video_mode.slock, flags);753 if (dev->USE_ISO)754 dev->video_mode.isoc_ctl.buf = NULL;755 else756 dev->video_mode.bulk_ctl.buf = NULL;757 list_for_each_entry_safe(buf, node, &vidq->active, list) {758 list_del(&buf->list);759 vb2_buffer_done(&buf->vb.vb2_buf, state);760 }761 spin_unlock_irqrestore(&dev->video_mode.slock, flags);762}763 764static int start_streaming(struct vb2_queue *vq, unsigned int count)765{766 struct cx231xx *dev = vb2_get_drv_priv(vq);767 struct cx231xx_dmaqueue *vidq = &dev->video_mode.vidq;768 int ret = 0;769 770 vidq->sequence = 0;771 dev->mode_tv = 0;772 773 cx231xx_enable_analog_tuner(dev);774 if (dev->USE_ISO)775 ret = cx231xx_init_isoc(dev, CX231XX_NUM_PACKETS,776 CX231XX_NUM_BUFS,777 dev->video_mode.max_pkt_size,778 cx231xx_isoc_copy);779 else780 ret = cx231xx_init_bulk(dev, CX231XX_NUM_PACKETS,781 CX231XX_NUM_BUFS,782 dev->video_mode.max_pkt_size,783 cx231xx_bulk_copy);784 if (ret)785 return_all_buffers(dev, VB2_BUF_STATE_QUEUED);786 call_all(dev, video, s_stream, 1);787 return ret;788}789 790static void stop_streaming(struct vb2_queue *vq)791{792 struct cx231xx *dev = vb2_get_drv_priv(vq);793 794 call_all(dev, video, s_stream, 0);795 return_all_buffers(dev, VB2_BUF_STATE_ERROR);796}797 798static const struct vb2_ops cx231xx_video_qops = {799 .queue_setup = queue_setup,800 .buf_queue = buffer_queue,801 .start_streaming = start_streaming,802 .stop_streaming = stop_streaming,803 .wait_prepare = vb2_ops_wait_prepare,804 .wait_finish = vb2_ops_wait_finish,805};806 807/********************* v4l2 interface **************************************/808 809void video_mux(struct cx231xx *dev, int index)810{811 dev->video_input = index;812 dev->ctl_ainput = INPUT(index)->amux;813 814 cx231xx_set_video_input_mux(dev, index);815 816 cx25840_call(dev, video, s_routing, INPUT(index)->vmux, 0, 0);817 818 cx231xx_set_audio_input(dev, dev->ctl_ainput);819 820 dev_dbg(dev->dev, "video_mux : %d\n", index);821 822 /* do mode control overrides if required */823 cx231xx_do_mode_ctrl_overrides(dev);824}825 826/* ------------------------------------------------------------------827 IOCTL vidioc handling828 ------------------------------------------------------------------*/829 830static int vidioc_g_fmt_vid_cap(struct file *file, void *priv,831 struct v4l2_format *f)832{833 struct cx231xx *dev = video_drvdata(file);834 835 f->fmt.pix.width = dev->width;836 f->fmt.pix.height = dev->height;837 f->fmt.pix.pixelformat = dev->format->fourcc;838 f->fmt.pix.bytesperline = (dev->width * dev->format->depth + 7) >> 3;839 f->fmt.pix.sizeimage = f->fmt.pix.bytesperline * dev->height;840 f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;841 842 f->fmt.pix.field = V4L2_FIELD_INTERLACED;843 844 return 0;845}846 847static struct cx231xx_fmt *format_by_fourcc(unsigned int fourcc)848{849 unsigned int i;850 851 for (i = 0; i < ARRAY_SIZE(format); i++)852 if (format[i].fourcc == fourcc)853 return &format[i];854 855 return NULL;856}857 858static int vidioc_try_fmt_vid_cap(struct file *file, void *priv,859 struct v4l2_format *f)860{861 struct cx231xx *dev = video_drvdata(file);862 unsigned int width = f->fmt.pix.width;863 unsigned int height = f->fmt.pix.height;864 unsigned int maxw = norm_maxw(dev);865 unsigned int maxh = norm_maxh(dev);866 struct cx231xx_fmt *fmt;867 868 fmt = format_by_fourcc(f->fmt.pix.pixelformat);869 if (!fmt) {870 cx231xx_videodbg("Fourcc format (%08x) invalid.\n",871 f->fmt.pix.pixelformat);872 return -EINVAL;873 }874 875 /* width must even because of the YUYV format876 height must be even because of interlacing */877 v4l_bound_align_image(&width, 48, maxw, 1, &height, 32, maxh, 1, 0);878 879 f->fmt.pix.width = width;880 f->fmt.pix.height = height;881 f->fmt.pix.pixelformat = fmt->fourcc;882 f->fmt.pix.bytesperline = (width * fmt->depth + 7) >> 3;883 f->fmt.pix.sizeimage = f->fmt.pix.bytesperline * height;884 f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;885 f->fmt.pix.field = V4L2_FIELD_INTERLACED;886 887 return 0;888}889 890static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,891 struct v4l2_format *f)892{893 struct cx231xx *dev = video_drvdata(file);894 struct v4l2_subdev_format format = {895 .which = V4L2_SUBDEV_FORMAT_ACTIVE,896 };897 int rc;898 899 rc = vidioc_try_fmt_vid_cap(file, priv, f);900 if (rc)901 return rc;902 903 if (vb2_is_busy(&dev->vidq)) {904 dev_err(dev->dev, "%s: queue busy\n", __func__);905 return -EBUSY;906 }907 908 /* set new image size */909 dev->width = f->fmt.pix.width;910 dev->height = f->fmt.pix.height;911 dev->format = format_by_fourcc(f->fmt.pix.pixelformat);912 913 v4l2_fill_mbus_format(&format.format, &f->fmt.pix, MEDIA_BUS_FMT_FIXED);914 call_all(dev, pad, set_fmt, NULL, &format);915 v4l2_fill_pix_format(&f->fmt.pix, &format.format);916 917 return rc;918}919 920static int vidioc_g_std(struct file *file, void *priv, v4l2_std_id *id)921{922 struct cx231xx *dev = video_drvdata(file);923 924 *id = dev->norm;925 return 0;926}927 928static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id norm)929{930 struct cx231xx *dev = video_drvdata(file);931 struct v4l2_subdev_format format = {932 .which = V4L2_SUBDEV_FORMAT_ACTIVE,933 };934 935 if (dev->norm == norm)936 return 0;937 938 if (vb2_is_busy(&dev->vidq))939 return -EBUSY;940 941 dev->norm = norm;942 943 /* Adjusts width/height, if needed */944 dev->width = 720;945 dev->height = (dev->norm & V4L2_STD_625_50) ? 576 : 480;946 947 call_all(dev, video, s_std, dev->norm);948 949 /* We need to reset basic properties in the decoder related to950 resolution (since a standard change effects things like the number951 of lines in VACT, etc) */952 format.format.code = MEDIA_BUS_FMT_FIXED;953 format.format.width = dev->width;954 format.format.height = dev->height;955 call_all(dev, pad, set_fmt, NULL, &format);956 957 /* do mode control overrides */958 cx231xx_do_mode_ctrl_overrides(dev);959 960 return 0;961}962 963static const char *iname[] = {964 [CX231XX_VMUX_COMPOSITE1] = "Composite1",965 [CX231XX_VMUX_SVIDEO] = "S-Video",966 [CX231XX_VMUX_TELEVISION] = "Television",967 [CX231XX_VMUX_CABLE] = "Cable TV",968 [CX231XX_VMUX_DVB] = "DVB",969};970 971void cx231xx_v4l2_create_entities(struct cx231xx *dev)972{973#if defined(CONFIG_MEDIA_CONTROLLER)974 int ret, i;975 976 /* Create entities for each input connector */977 for (i = 0; i < MAX_CX231XX_INPUT; i++) {978 struct media_entity *ent = &dev->input_ent[i];979 980 if (!INPUT(i)->type)981 break;982 983 ent->name = iname[INPUT(i)->type];984 ent->flags = MEDIA_ENT_FL_CONNECTOR;985 dev->input_pad[i].flags = MEDIA_PAD_FL_SOURCE;986 987 switch (INPUT(i)->type) {988 case CX231XX_VMUX_COMPOSITE1:989 ent->function = MEDIA_ENT_F_CONN_COMPOSITE;990 break;991 case CX231XX_VMUX_SVIDEO:992 ent->function = MEDIA_ENT_F_CONN_SVIDEO;993 break;994 case CX231XX_VMUX_TELEVISION:995 case CX231XX_VMUX_CABLE:996 case CX231XX_VMUX_DVB:997 /* The DVB core will handle it */998 if (dev->tuner_type == TUNER_ABSENT)999 continue;1000 fallthrough;1001 default: /* just to shut up a gcc warning */1002 ent->function = MEDIA_ENT_F_CONN_RF;1003 break;1004 }1005 1006 ret = media_entity_pads_init(ent, 1, &dev->input_pad[i]);1007 if (ret < 0)1008 pr_err("failed to initialize input pad[%d]!\n", i);1009 1010 ret = media_device_register_entity(dev->media_dev, ent);1011 if (ret < 0)1012 pr_err("failed to register input entity %d!\n", i);1013 }1014#endif1015}1016 1017int cx231xx_enum_input(struct file *file, void *priv,1018 struct v4l2_input *i)1019{1020 struct cx231xx *dev = video_drvdata(file);1021 u32 gen_stat;1022 unsigned int n;1023 int ret;1024 1025 n = i->index;1026 if (n >= MAX_CX231XX_INPUT)1027 return -EINVAL;1028 if (0 == INPUT(n)->type)1029 return -EINVAL;1030 1031 i->index = n;1032 i->type = V4L2_INPUT_TYPE_CAMERA;1033 1034 strscpy(i->name, iname[INPUT(n)->type], sizeof(i->name));1035 1036 if ((CX231XX_VMUX_TELEVISION == INPUT(n)->type) ||1037 (CX231XX_VMUX_CABLE == INPUT(n)->type))1038 i->type = V4L2_INPUT_TYPE_TUNER;1039 1040 i->std = dev->vdev.tvnorms;1041 1042 /* If they are asking about the active input, read signal status */1043 if (n == dev->video_input) {1044 ret = cx231xx_read_i2c_data(dev, VID_BLK_I2C_ADDRESS,1045 GEN_STAT, 2, &gen_stat, 4);1046 if (ret > 0) {1047 if ((gen_stat & FLD_VPRES) == 0x00)1048 i->status |= V4L2_IN_ST_NO_SIGNAL;1049 if ((gen_stat & FLD_HLOCK) == 0x00)1050 i->status |= V4L2_IN_ST_NO_H_LOCK;1051 }1052 }1053 1054 return 0;1055}1056 1057int cx231xx_g_input(struct file *file, void *priv, unsigned int *i)1058{1059 struct cx231xx *dev = video_drvdata(file);1060 1061 *i = dev->video_input;1062 1063 return 0;1064}1065 1066int cx231xx_s_input(struct file *file, void *priv, unsigned int i)1067{1068 struct cx231xx *dev = video_drvdata(file);1069 1070 dev->mode_tv = 0;1071 1072 if (i >= MAX_CX231XX_INPUT)1073 return -EINVAL;1074 if (0 == INPUT(i)->type)1075 return -EINVAL;1076 1077 video_mux(dev, i);1078 1079 if (INPUT(i)->type == CX231XX_VMUX_TELEVISION ||1080 INPUT(i)->type == CX231XX_VMUX_CABLE) {1081 /* There's a tuner, so reset the standard and put it on the1082 last known frequency (since it was probably powered down1083 until now */1084 call_all(dev, video, s_std, dev->norm);1085 }1086 1087 return 0;1088}1089 1090int cx231xx_g_tuner(struct file *file, void *priv, struct v4l2_tuner *t)1091{1092 struct cx231xx *dev = video_drvdata(file);1093 1094 if (0 != t->index)1095 return -EINVAL;1096 1097 strscpy(t->name, "Tuner", sizeof(t->name));1098 1099 t->type = V4L2_TUNER_ANALOG_TV;1100 t->capability = V4L2_TUNER_CAP_NORM;1101 t->rangehigh = 0xffffffffUL;1102 t->signal = 0xffff; /* LOCKED */1103 call_all(dev, tuner, g_tuner, t);1104 1105 return 0;1106}1107 1108int cx231xx_s_tuner(struct file *file, void *priv, const struct v4l2_tuner *t)1109{1110 if (0 != t->index)1111 return -EINVAL;1112 return 0;1113}1114 1115int cx231xx_g_frequency(struct file *file, void *priv,1116 struct v4l2_frequency *f)1117{1118 struct cx231xx *dev = video_drvdata(file);1119 1120 if (f->tuner)1121 return -EINVAL;1122 1123 f->frequency = dev->ctl_freq;1124 1125 return 0;1126}1127 1128int cx231xx_s_frequency(struct file *file, void *priv,1129 const struct v4l2_frequency *f)1130{1131 struct cx231xx *dev = video_drvdata(file);1132 struct v4l2_frequency new_freq = *f;1133 int rc, need_if_freq = 0;1134 u32 if_frequency = 5400000;1135 1136 dev_dbg(dev->dev,1137 "Enter vidioc_s_frequency()f->frequency=%d;f->type=%d\n",1138 f->frequency, f->type);1139 1140 if (0 != f->tuner)1141 return -EINVAL;1142 1143 /* set pre channel change settings in DIF first */1144 rc = cx231xx_tuner_pre_channel_change(dev);1145 1146 switch (dev->model) { /* i2c device tuners */1147 case CX231XX_BOARD_HAUPPAUGE_930C_HD_1114xx:1148 case CX231XX_BOARD_HAUPPAUGE_935C:1149 case CX231XX_BOARD_HAUPPAUGE_955Q:1150 case CX231XX_BOARD_HAUPPAUGE_975:1151 case CX231XX_BOARD_EVROMEDIA_FULL_HYBRID_FULLHD:1152 if (dev->cx231xx_set_analog_freq)1153 dev->cx231xx_set_analog_freq(dev, f->frequency);1154 dev->ctl_freq = f->frequency;1155 need_if_freq = 1;1156 break;1157 default:1158 call_all(dev, tuner, s_frequency, f);1159 call_all(dev, tuner, g_frequency, &new_freq);1160 dev->ctl_freq = new_freq.frequency;1161 break;1162 }1163 1164 pr_debug("%s() %u : %u\n", __func__, f->frequency, dev->ctl_freq);1165 1166 /* set post channel change settings in DIF first */1167 rc = cx231xx_tuner_post_channel_change(dev);1168 1169 if (need_if_freq || dev->tuner_type == TUNER_NXP_TDA18271) {1170 if (dev->norm & (V4L2_STD_MN | V4L2_STD_NTSC_443))1171 if_frequency = 5400000; /*5.4MHz */1172 else if (dev->norm & V4L2_STD_B)1173 if_frequency = 6000000; /*6.0MHz */1174 else if (dev->norm & (V4L2_STD_PAL_DK | V4L2_STD_SECAM_DK))1175 if_frequency = 6900000; /*6.9MHz */1176 else if (dev->norm & V4L2_STD_GH)1177 if_frequency = 7100000; /*7.1MHz */1178 else if (dev->norm & V4L2_STD_PAL_I)1179 if_frequency = 7250000; /*7.25MHz */1180 else if (dev->norm & V4L2_STD_SECAM_L)1181 if_frequency = 6900000; /*6.9MHz */1182 else if (dev->norm & V4L2_STD_SECAM_LC)1183 if_frequency = 1250000; /*1.25MHz */1184 1185 dev_dbg(dev->dev,1186 "if_frequency is set to %d\n", if_frequency);1187 cx231xx_set_Colibri_For_LowIF(dev, if_frequency, 1, 1);1188 1189 update_HH_register_after_set_DIF(dev);1190 }1191 1192 dev_dbg(dev->dev, "Set New FREQUENCY to %d\n", f->frequency);1193 1194 return rc;1195}1196 1197#ifdef CONFIG_VIDEO_ADV_DEBUG1198 1199int cx231xx_g_chip_info(struct file *file, void *fh,1200 struct v4l2_dbg_chip_info *chip)1201{1202 switch (chip->match.addr) {1203 case 0: /* Cx231xx - internal registers */1204 return 0;1205 case 1: /* AFE - read byte */1206 strscpy(chip->name, "AFE (byte)", sizeof(chip->name));1207 return 0;1208 case 2: /* Video Block - read byte */1209 strscpy(chip->name, "Video (byte)", sizeof(chip->name));1210 return 0;1211 case 3: /* I2S block - read byte */1212 strscpy(chip->name, "I2S (byte)", sizeof(chip->name));1213 return 0;1214 case 4: /* AFE - read dword */1215 strscpy(chip->name, "AFE (dword)", sizeof(chip->name));1216 return 0;1217 case 5: /* Video Block - read dword */1218 strscpy(chip->name, "Video (dword)", sizeof(chip->name));1219 return 0;1220 case 6: /* I2S Block - read dword */1221 strscpy(chip->name, "I2S (dword)", sizeof(chip->name));1222 return 0;1223 }1224 return -EINVAL;1225}1226 1227int cx231xx_g_register(struct file *file, void *priv,1228 struct v4l2_dbg_register *reg)1229{1230 struct cx231xx *dev = video_drvdata(file);1231 int ret;1232 u8 value[4] = { 0, 0, 0, 0 };1233 u32 data = 0;1234 1235 switch (reg->match.addr) {1236 case 0: /* Cx231xx - internal registers */1237 ret = cx231xx_read_ctrl_reg(dev, VRT_GET_REGISTER,1238 (u16)reg->reg, value, 4);1239 reg->val = value[0] | value[1] << 8 |1240 value[2] << 16 | (u32)value[3] << 24;1241 reg->size = 4;1242 break;1243 case 1: /* AFE - read byte */1244 ret = cx231xx_read_i2c_data(dev, AFE_DEVICE_ADDRESS,1245 (u16)reg->reg, 2, &data, 1);1246 reg->val = data;1247 reg->size = 1;1248 break;1249 case 2: /* Video Block - read byte */1250 ret = cx231xx_read_i2c_data(dev, VID_BLK_I2C_ADDRESS,1251 (u16)reg->reg, 2, &data, 1);1252 reg->val = data;1253 reg->size = 1;1254 break;1255 case 3: /* I2S block - read byte */1256 ret = cx231xx_read_i2c_data(dev, I2S_BLK_DEVICE_ADDRESS,1257 (u16)reg->reg, 1, &data, 1);1258 reg->val = data;1259 reg->size = 1;1260 break;1261 case 4: /* AFE - read dword */1262 ret = cx231xx_read_i2c_data(dev, AFE_DEVICE_ADDRESS,1263 (u16)reg->reg, 2, &data, 4);1264 reg->val = data;1265 reg->size = 4;1266 break;1267 case 5: /* Video Block - read dword */1268 ret = cx231xx_read_i2c_data(dev, VID_BLK_I2C_ADDRESS,1269 (u16)reg->reg, 2, &data, 4);1270 reg->val = data;1271 reg->size = 4;1272 break;1273 case 6: /* I2S Block - read dword */1274 ret = cx231xx_read_i2c_data(dev, I2S_BLK_DEVICE_ADDRESS,1275 (u16)reg->reg, 1, &data, 4);1276 reg->val = data;1277 reg->size = 4;1278 break;1279 default:1280 return -EINVAL;1281 }1282 return ret < 0 ? ret : 0;1283}1284 1285int cx231xx_s_register(struct file *file, void *priv,1286 const struct v4l2_dbg_register *reg)1287{1288 struct cx231xx *dev = video_drvdata(file);1289 int ret;1290 u8 data[4] = { 0, 0, 0, 0 };1291 1292 switch (reg->match.addr) {1293 case 0: /* cx231xx internal registers */1294 data[0] = (u8) reg->val;1295 data[1] = (u8) (reg->val >> 8);1296 data[2] = (u8) (reg->val >> 16);1297 data[3] = (u8) (reg->val >> 24);1298 ret = cx231xx_write_ctrl_reg(dev, VRT_SET_REGISTER,1299 (u16)reg->reg, data, 4);1300 break;1301 case 1: /* AFE - write byte */1302 ret = cx231xx_write_i2c_data(dev, AFE_DEVICE_ADDRESS,1303 (u16)reg->reg, 2, reg->val, 1);1304 break;1305 case 2: /* Video Block - write byte */1306 ret = cx231xx_write_i2c_data(dev, VID_BLK_I2C_ADDRESS,1307 (u16)reg->reg, 2, reg->val, 1);1308 break;1309 case 3: /* I2S block - write byte */1310 ret = cx231xx_write_i2c_data(dev, I2S_BLK_DEVICE_ADDRESS,1311 (u16)reg->reg, 1, reg->val, 1);1312 break;1313 case 4: /* AFE - write dword */1314 ret = cx231xx_write_i2c_data(dev, AFE_DEVICE_ADDRESS,1315 (u16)reg->reg, 2, reg->val, 4);1316 break;1317 case 5: /* Video Block - write dword */1318 ret = cx231xx_write_i2c_data(dev, VID_BLK_I2C_ADDRESS,1319 (u16)reg->reg, 2, reg->val, 4);1320 break;1321 case 6: /* I2S block - write dword */1322 ret = cx231xx_write_i2c_data(dev, I2S_BLK_DEVICE_ADDRESS,1323 (u16)reg->reg, 1, reg->val, 4);1324 break;1325 default:1326 return -EINVAL;1327 }1328 return ret < 0 ? ret : 0;1329}1330#endif1331 1332static int vidioc_g_pixelaspect(struct file *file, void *priv,1333 int type, struct v4l2_fract *f)1334{1335 struct cx231xx *dev = video_drvdata(file);1336 bool is_50hz = dev->norm & V4L2_STD_625_50;1337 1338 if (type != V4L2_BUF_TYPE_VIDEO_CAPTURE)1339 return -EINVAL;1340 1341 f->numerator = is_50hz ? 54 : 11;1342 f->denominator = is_50hz ? 59 : 10;1343 1344 return 0;1345}1346 1347static int vidioc_g_selection(struct file *file, void *priv,1348 struct v4l2_selection *s)1349{1350 struct cx231xx *dev = video_drvdata(file);1351 1352 if (s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)1353 return -EINVAL;1354 1355 switch (s->target) {1356 case V4L2_SEL_TGT_CROP_BOUNDS:1357 case V4L2_SEL_TGT_CROP_DEFAULT:1358 s->r.left = 0;1359 s->r.top = 0;1360 s->r.width = dev->width;1361 s->r.height = dev->height;1362 break;1363 default:1364 return -EINVAL;1365 }1366 return 0;1367}1368 1369int cx231xx_querycap(struct file *file, void *priv,1370 struct v4l2_capability *cap)1371{1372 struct cx231xx *dev = video_drvdata(file);1373 1374 strscpy(cap->driver, "cx231xx", sizeof(cap->driver));1375 strscpy(cap->card, cx231xx_boards[dev->model].name, sizeof(cap->card));1376 usb_make_path(dev->udev, cap->bus_info, sizeof(cap->bus_info));1377 cap->capabilities = V4L2_CAP_READWRITE |1378 V4L2_CAP_VBI_CAPTURE | V4L2_CAP_VIDEO_CAPTURE |1379 V4L2_CAP_STREAMING | V4L2_CAP_DEVICE_CAPS;1380 if (video_is_registered(&dev->radio_dev))1381 cap->capabilities |= V4L2_CAP_RADIO;1382 1383 switch (dev->model) {1384 case CX231XX_BOARD_HAUPPAUGE_930C_HD_1114xx:1385 case CX231XX_BOARD_HAUPPAUGE_935C:1386 case CX231XX_BOARD_HAUPPAUGE_955Q:1387 case CX231XX_BOARD_HAUPPAUGE_975:1388 case CX231XX_BOARD_EVROMEDIA_FULL_HYBRID_FULLHD:1389 cap->capabilities |= V4L2_CAP_TUNER;1390 break;1391 default:1392 if (dev->tuner_type != TUNER_ABSENT)1393 cap->capabilities |= V4L2_CAP_TUNER;1394 break;1395 }1396 return 0;1397}1398 1399static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv,1400 struct v4l2_fmtdesc *f)1401{1402 if (unlikely(f->index >= ARRAY_SIZE(format)))1403 return -EINVAL;1404 1405 f->pixelformat = format[f->index].fourcc;1406 1407 return 0;1408}1409 1410/* RAW VBI ioctls */1411 1412static int vidioc_g_fmt_vbi_cap(struct file *file, void *priv,1413 struct v4l2_format *f)1414{1415 struct cx231xx *dev = video_drvdata(file);1416 1417 f->fmt.vbi.sampling_rate = 6750000 * 4;1418 f->fmt.vbi.samples_per_line = VBI_LINE_LENGTH;1419 f->fmt.vbi.sample_format = V4L2_PIX_FMT_GREY;1420 f->fmt.vbi.offset = 0;1421 f->fmt.vbi.start[0] = (dev->norm & V4L2_STD_625_50) ?1422 PAL_VBI_START_LINE : NTSC_VBI_START_LINE;1423 f->fmt.vbi.count[0] = (dev->norm & V4L2_STD_625_50) ?1424 PAL_VBI_LINES : NTSC_VBI_LINES;1425 f->fmt.vbi.start[1] = (dev->norm & V4L2_STD_625_50) ?1426 PAL_VBI_START_LINE + 312 : NTSC_VBI_START_LINE + 263;1427 f->fmt.vbi.count[1] = f->fmt.vbi.count[0];1428 memset(f->fmt.vbi.reserved, 0, sizeof(f->fmt.vbi.reserved));1429 1430 return 0;1431 1432}1433 1434static int vidioc_try_fmt_vbi_cap(struct file *file, void *priv,1435 struct v4l2_format *f)1436{1437 struct cx231xx *dev = video_drvdata(file);1438 1439 f->fmt.vbi.sampling_rate = 6750000 * 4;1440 f->fmt.vbi.samples_per_line = VBI_LINE_LENGTH;1441 f->fmt.vbi.sample_format = V4L2_PIX_FMT_GREY;1442 f->fmt.vbi.offset = 0;1443 f->fmt.vbi.flags = 0;1444 f->fmt.vbi.start[0] = (dev->norm & V4L2_STD_625_50) ?1445 PAL_VBI_START_LINE : NTSC_VBI_START_LINE;1446 f->fmt.vbi.count[0] = (dev->norm & V4L2_STD_625_50) ?1447 PAL_VBI_LINES : NTSC_VBI_LINES;1448 f->fmt.vbi.start[1] = (dev->norm & V4L2_STD_625_50) ?1449 PAL_VBI_START_LINE + 312 : NTSC_VBI_START_LINE + 263;1450 f->fmt.vbi.count[1] = f->fmt.vbi.count[0];1451 memset(f->fmt.vbi.reserved, 0, sizeof(f->fmt.vbi.reserved));1452 1453 return 0;1454 1455}1456 1457static int vidioc_s_fmt_vbi_cap(struct file *file, void *priv,1458 struct v4l2_format *f)1459{1460 return vidioc_try_fmt_vbi_cap(file, priv, f);1461}1462 1463/* ----------------------------------------------------------- */1464/* RADIO ESPECIFIC IOCTLS */1465/* ----------------------------------------------------------- */1466 1467static int radio_g_tuner(struct file *file, void *priv, struct v4l2_tuner *t)1468{1469 struct cx231xx *dev = video_drvdata(file);1470 1471 if (t->index)1472 return -EINVAL;1473 1474 strscpy(t->name, "Radio", sizeof(t->name));1475 1476 call_all(dev, tuner, g_tuner, t);1477 1478 return 0;1479}1480static int radio_s_tuner(struct file *file, void *priv, const struct v4l2_tuner *t)1481{1482 struct cx231xx *dev = video_drvdata(file);1483 1484 if (t->index)1485 return -EINVAL;1486 1487 call_all(dev, tuner, s_tuner, t);1488 1489 return 0;1490}1491 1492/*1493 * cx231xx_v4l2_open()1494 * inits the device and starts isoc transfer1495 */1496static int cx231xx_v4l2_open(struct file *filp)1497{1498 struct video_device *vdev = video_devdata(filp);1499 struct cx231xx *dev = video_drvdata(filp);1500 int ret;1501 1502 if (mutex_lock_interruptible(&dev->lock))1503 return -ERESTARTSYS;1504 1505 ret = v4l2_fh_open(filp);1506 if (ret) {1507 mutex_unlock(&dev->lock);1508 return ret;1509 }1510 1511 if (dev->users++ == 0) {1512 /* Power up in Analog TV mode */1513 if (dev->board.external_av)1514 cx231xx_set_power_mode(dev,1515 POLARIS_AVMODE_ENXTERNAL_AV);1516 else1517 cx231xx_set_power_mode(dev, POLARIS_AVMODE_ANALOGT_TV);1518 1519 /* set video alternate setting */1520 cx231xx_set_video_alternate(dev);1521 1522 /* Needed, since GPIO might have disabled power of1523 some i2c device */1524 cx231xx_config_i2c(dev);1525 1526 /* device needs to be initialized before isoc transfer */1527 dev->video_input = dev->video_input > 2 ? 2 : dev->video_input;1528 }1529 1530 if (vdev->vfl_type == VFL_TYPE_RADIO) {1531 cx231xx_videodbg("video_open: setting radio device\n");1532 1533 /* cx231xx_start_radio(dev); */1534 1535 call_all(dev, tuner, s_radio);1536 }1537 if (vdev->vfl_type == VFL_TYPE_VBI) {1538 /* Set the required alternate setting VBI interface works in1539 Bulk mode only */1540 cx231xx_set_alt_setting(dev, INDEX_VANC, 0);1541 }1542 mutex_unlock(&dev->lock);1543 return 0;1544}1545 1546/*1547 * cx231xx_realease_resources()1548 * unregisters the v4l2,i2c and usb devices1549 * called when the device gets disconnected or at module unload1550*/1551void cx231xx_release_analog_resources(struct cx231xx *dev)1552{1553 1554 /*FIXME: I2C IR should be disconnected */1555 1556 if (video_is_registered(&dev->radio_dev))1557 video_unregister_device(&dev->radio_dev);1558 if (video_is_registered(&dev->vbi_dev)) {1559 dev_info(dev->dev, "V4L2 device %s deregistered\n",1560 video_device_node_name(&dev->vbi_dev));1561 video_unregister_device(&dev->vbi_dev);1562 }1563 if (video_is_registered(&dev->vdev)) {1564 dev_info(dev->dev, "V4L2 device %s deregistered\n",1565 video_device_node_name(&dev->vdev));1566 1567 if (dev->board.has_417)1568 cx231xx_417_unregister(dev);1569 1570 video_unregister_device(&dev->vdev);1571 }1572 v4l2_ctrl_handler_free(&dev->ctrl_handler);1573 v4l2_ctrl_handler_free(&dev->radio_ctrl_handler);1574}1575 1576/*1577 * cx231xx_close()1578 * stops streaming and deallocates all resources allocated by the v4l21579 * calls and ioctls1580 */1581static int cx231xx_close(struct file *filp)1582{1583 struct cx231xx *dev = video_drvdata(filp);1584 struct video_device *vdev = video_devdata(filp);1585 1586 _vb2_fop_release(filp, NULL);1587 1588 if (--dev->users == 0) {1589 /* Save some power by putting tuner to sleep */1590 call_all(dev, tuner, standby);1591 1592 /* do this before setting alternate! */1593 if (dev->USE_ISO)1594 cx231xx_uninit_isoc(dev);1595 else1596 cx231xx_uninit_bulk(dev);1597 cx231xx_set_mode(dev, CX231XX_SUSPEND);1598 }1599 1600 /*1601 * To workaround error number=-71 on EP0 for VideoGrabber,1602 * need exclude following.1603 * FIXME: It is probably safe to remove most of these, as we're1604 * now avoiding the alternate setting for INDEX_VANC1605 */1606 if (!dev->board.no_alt_vanc && vdev->vfl_type == VFL_TYPE_VBI) {1607 /* do this before setting alternate! */1608 cx231xx_uninit_vbi_isoc(dev);1609 1610 /* set alternate 0 */1611 if (!dev->vbi_or_sliced_cc_mode)1612 cx231xx_set_alt_setting(dev, INDEX_VANC, 0);1613 else1614 cx231xx_set_alt_setting(dev, INDEX_HANC, 0);1615 1616 wake_up_interruptible_nr(&dev->open, 1);1617 return 0;1618 }1619 1620 if (dev->users == 0) {1621 /* set alternate 0 */1622 cx231xx_set_alt_setting(dev, INDEX_VIDEO, 0);1623 }1624 1625 wake_up_interruptible(&dev->open);1626 return 0;1627}1628 1629static int cx231xx_v4l2_close(struct file *filp)1630{1631 struct cx231xx *dev = video_drvdata(filp);1632 int rc;1633 1634 mutex_lock(&dev->lock);1635 rc = cx231xx_close(filp);1636 mutex_unlock(&dev->lock);1637 return rc;1638}1639 1640static const struct v4l2_file_operations cx231xx_v4l_fops = {1641 .owner = THIS_MODULE,1642 .open = cx231xx_v4l2_open,1643 .release = cx231xx_v4l2_close,1644 .read = vb2_fop_read,1645 .poll = vb2_fop_poll,1646 .mmap = vb2_fop_mmap,1647 .unlocked_ioctl = video_ioctl2,1648};1649 1650static const struct v4l2_ioctl_ops video_ioctl_ops = {1651 .vidioc_querycap = cx231xx_querycap,1652 .vidioc_enum_fmt_vid_cap = vidioc_enum_fmt_vid_cap,1653 .vidioc_g_fmt_vid_cap = vidioc_g_fmt_vid_cap,1654 .vidioc_try_fmt_vid_cap = vidioc_try_fmt_vid_cap,1655 .vidioc_s_fmt_vid_cap = vidioc_s_fmt_vid_cap,1656 .vidioc_g_fmt_vbi_cap = vidioc_g_fmt_vbi_cap,1657 .vidioc_try_fmt_vbi_cap = vidioc_try_fmt_vbi_cap,1658 .vidioc_s_fmt_vbi_cap = vidioc_s_fmt_vbi_cap,1659 .vidioc_g_pixelaspect = vidioc_g_pixelaspect,1660 .vidioc_g_selection = vidioc_g_selection,1661 .vidioc_reqbufs = vb2_ioctl_reqbufs,1662 .vidioc_querybuf = vb2_ioctl_querybuf,1663 .vidioc_qbuf = vb2_ioctl_qbuf,1664 .vidioc_dqbuf = vb2_ioctl_dqbuf,1665 .vidioc_s_std = vidioc_s_std,1666 .vidioc_g_std = vidioc_g_std,1667 .vidioc_enum_input = cx231xx_enum_input,1668 .vidioc_g_input = cx231xx_g_input,1669 .vidioc_s_input = cx231xx_s_input,1670 .vidioc_streamon = vb2_ioctl_streamon,1671 .vidioc_streamoff = vb2_ioctl_streamoff,1672 .vidioc_g_tuner = cx231xx_g_tuner,1673 .vidioc_s_tuner = cx231xx_s_tuner,1674 .vidioc_g_frequency = cx231xx_g_frequency,1675 .vidioc_s_frequency = cx231xx_s_frequency,1676#ifdef CONFIG_VIDEO_ADV_DEBUG1677 .vidioc_g_chip_info = cx231xx_g_chip_info,1678 .vidioc_g_register = cx231xx_g_register,1679 .vidioc_s_register = cx231xx_s_register,1680#endif1681 .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,1682 .vidioc_unsubscribe_event = v4l2_event_unsubscribe,1683};1684 1685static struct video_device cx231xx_vbi_template;1686 1687static const struct video_device cx231xx_video_template = {1688 .fops = &cx231xx_v4l_fops,1689 .release = video_device_release_empty,1690 .ioctl_ops = &video_ioctl_ops,1691 .tvnorms = V4L2_STD_ALL,1692};1693 1694static const struct v4l2_file_operations radio_fops = {1695 .owner = THIS_MODULE,1696 .open = cx231xx_v4l2_open,1697 .release = cx231xx_v4l2_close,1698 .poll = v4l2_ctrl_poll,1699 .unlocked_ioctl = video_ioctl2,1700};1701 1702static const struct v4l2_ioctl_ops radio_ioctl_ops = {1703 .vidioc_querycap = cx231xx_querycap,1704 .vidioc_g_tuner = radio_g_tuner,1705 .vidioc_s_tuner = radio_s_tuner,1706 .vidioc_g_frequency = cx231xx_g_frequency,1707 .vidioc_s_frequency = cx231xx_s_frequency,1708#ifdef CONFIG_VIDEO_ADV_DEBUG1709 .vidioc_g_chip_info = cx231xx_g_chip_info,1710 .vidioc_g_register = cx231xx_g_register,1711 .vidioc_s_register = cx231xx_s_register,1712#endif1713 .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,1714 .vidioc_unsubscribe_event = v4l2_event_unsubscribe,1715};1716 1717static struct video_device cx231xx_radio_template = {1718 .name = "cx231xx-radio",1719 .fops = &radio_fops,1720 .ioctl_ops = &radio_ioctl_ops,1721};1722 1723/******************************** usb interface ******************************/1724 1725static void cx231xx_vdev_init(struct cx231xx *dev,1726 struct video_device *vfd,1727 const struct video_device *template,1728 const char *type_name)1729{1730 *vfd = *template;1731 vfd->v4l2_dev = &dev->v4l2_dev;1732 vfd->release = video_device_release_empty;1733 vfd->lock = &dev->lock;1734 1735 snprintf(vfd->name, sizeof(vfd->name), "%s %s", dev->name, type_name);1736 1737 video_set_drvdata(vfd, dev);1738 if (dev->tuner_type == TUNER_ABSENT) {1739 switch (dev->model) {1740 case CX231XX_BOARD_HAUPPAUGE_930C_HD_1114xx:1741 case CX231XX_BOARD_HAUPPAUGE_935C:1742 case CX231XX_BOARD_HAUPPAUGE_955Q:1743 case CX231XX_BOARD_HAUPPAUGE_975:1744 case CX231XX_BOARD_EVROMEDIA_FULL_HYBRID_FULLHD:1745 break;1746 default:1747 v4l2_disable_ioctl(vfd, VIDIOC_G_FREQUENCY);1748 v4l2_disable_ioctl(vfd, VIDIOC_S_FREQUENCY);1749 v4l2_disable_ioctl(vfd, VIDIOC_G_TUNER);1750 v4l2_disable_ioctl(vfd, VIDIOC_S_TUNER);1751 break;1752 }1753 }1754}1755 1756int cx231xx_register_analog_devices(struct cx231xx *dev)1757{1758 struct vb2_queue *q;1759 int ret;1760 1761 dev_info(dev->dev, "v4l2 driver version %s\n", CX231XX_VERSION);1762 1763 /* set default norm */1764 dev->norm = V4L2_STD_PAL;1765 dev->width = norm_maxw(dev);1766 dev->height = norm_maxh(dev);1767 dev->interlaced = 0;1768 1769 /* Analog specific initialization */1770 dev->format = &format[0];1771 1772 /* Set the initial input */1773 video_mux(dev, dev->video_input);1774 1775 call_all(dev, video, s_std, dev->norm);1776 1777 v4l2_ctrl_handler_init(&dev->ctrl_handler, 10);1778 v4l2_ctrl_handler_init(&dev->radio_ctrl_handler, 5);1779 1780 if (dev->sd_cx25840) {1781 v4l2_ctrl_add_handler(&dev->ctrl_handler,1782 dev->sd_cx25840->ctrl_handler, NULL, true);1783 v4l2_ctrl_add_handler(&dev->radio_ctrl_handler,1784 dev->sd_cx25840->ctrl_handler,1785 v4l2_ctrl_radio_filter, true);1786 }1787 1788 if (dev->ctrl_handler.error)1789 return dev->ctrl_handler.error;1790 if (dev->radio_ctrl_handler.error)1791 return dev->radio_ctrl_handler.error;1792 1793 /* enable vbi capturing */1794 /* write code here... */1795 1796 /* allocate and fill video video_device struct */1797 cx231xx_vdev_init(dev, &dev->vdev, &cx231xx_video_template, "video");1798#if defined(CONFIG_MEDIA_CONTROLLER)1799 dev->video_pad.flags = MEDIA_PAD_FL_SINK;1800 ret = media_entity_pads_init(&dev->vdev.entity, 1, &dev->video_pad);1801 if (ret < 0)1802 dev_err(dev->dev, "failed to initialize video media entity!\n");1803#endif1804 dev->vdev.ctrl_handler = &dev->ctrl_handler;1805 1806 q = &dev->vidq;1807 q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;1808 q->io_modes = VB2_USERPTR | VB2_MMAP | VB2_DMABUF | VB2_READ;1809 q->drv_priv = dev;1810 q->buf_struct_size = sizeof(struct cx231xx_buffer);1811 q->ops = &cx231xx_video_qops;1812 q->mem_ops = &vb2_vmalloc_memops;1813 q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;1814 q->min_queued_buffers = 1;1815 q->lock = &dev->lock;1816 ret = vb2_queue_init(q);1817 if (ret)1818 return ret;1819 dev->vdev.queue = q;1820 dev->vdev.device_caps = V4L2_CAP_READWRITE | V4L2_CAP_STREAMING |1821 V4L2_CAP_VIDEO_CAPTURE;1822 1823 switch (dev->model) { /* i2c device tuners */1824 case CX231XX_BOARD_HAUPPAUGE_930C_HD_1114xx:1825 case CX231XX_BOARD_HAUPPAUGE_935C:1826 case CX231XX_BOARD_HAUPPAUGE_955Q:1827 case CX231XX_BOARD_HAUPPAUGE_975:1828 case CX231XX_BOARD_EVROMEDIA_FULL_HYBRID_FULLHD:1829 dev->vdev.device_caps |= V4L2_CAP_TUNER;1830 break;1831 default:1832 if (dev->tuner_type != TUNER_ABSENT)1833 dev->vdev.device_caps |= V4L2_CAP_TUNER;1834 break;1835 }1836 1837 /* register v4l2 video video_device */1838 ret = video_register_device(&dev->vdev, VFL_TYPE_VIDEO,1839 video_nr[dev->devno]);1840 if (ret) {1841 dev_err(dev->dev,1842 "unable to register video device (error=%i).\n",1843 ret);1844 return ret;1845 }1846 1847 dev_info(dev->dev, "Registered video device %s [v4l2]\n",1848 video_device_node_name(&dev->vdev));1849 1850 /* Initialize VBI template */1851 cx231xx_vbi_template = cx231xx_video_template;1852 strscpy(cx231xx_vbi_template.name, "cx231xx-vbi",1853 sizeof(cx231xx_vbi_template.name));1854 1855 /* Allocate and fill vbi video_device struct */1856 cx231xx_vdev_init(dev, &dev->vbi_dev, &cx231xx_vbi_template, "vbi");1857 1858#if defined(CONFIG_MEDIA_CONTROLLER)1859 dev->vbi_pad.flags = MEDIA_PAD_FL_SINK;1860 ret = media_entity_pads_init(&dev->vbi_dev.entity, 1, &dev->vbi_pad);1861 if (ret < 0)1862 dev_err(dev->dev, "failed to initialize vbi media entity!\n");1863#endif1864 dev->vbi_dev.ctrl_handler = &dev->ctrl_handler;1865 1866 q = &dev->vbiq;1867 q->type = V4L2_BUF_TYPE_VBI_CAPTURE;1868 q->io_modes = VB2_USERPTR | VB2_MMAP | VB2_DMABUF | VB2_READ;1869 q->drv_priv = dev;1870 q->buf_struct_size = sizeof(struct cx231xx_buffer);1871 q->ops = &cx231xx_vbi_qops;1872 q->mem_ops = &vb2_vmalloc_memops;1873 q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;1874 q->min_queued_buffers = 1;1875 q->lock = &dev->lock;1876 ret = vb2_queue_init(q);1877 if (ret)1878 return ret;1879 dev->vbi_dev.queue = q;1880 dev->vbi_dev.device_caps = V4L2_CAP_READWRITE | V4L2_CAP_STREAMING |1881 V4L2_CAP_VBI_CAPTURE;1882 switch (dev->model) { /* i2c device tuners */1883 case CX231XX_BOARD_HAUPPAUGE_930C_HD_1114xx:1884 case CX231XX_BOARD_HAUPPAUGE_935C:1885 case CX231XX_BOARD_HAUPPAUGE_955Q:1886 case CX231XX_BOARD_HAUPPAUGE_975:1887 case CX231XX_BOARD_EVROMEDIA_FULL_HYBRID_FULLHD:1888 dev->vbi_dev.device_caps |= V4L2_CAP_TUNER;1889 break;1890 default:1891 if (dev->tuner_type != TUNER_ABSENT)1892 dev->vbi_dev.device_caps |= V4L2_CAP_TUNER;1893 }1894 1895 /* register v4l2 vbi video_device */1896 ret = video_register_device(&dev->vbi_dev, VFL_TYPE_VBI,1897 vbi_nr[dev->devno]);1898 if (ret < 0) {1899 dev_err(dev->dev, "unable to register vbi device\n");1900 return ret;1901 }1902 1903 dev_info(dev->dev, "Registered VBI device %s\n",1904 video_device_node_name(&dev->vbi_dev));1905 1906 if (cx231xx_boards[dev->model].radio.type == CX231XX_RADIO) {1907 cx231xx_vdev_init(dev, &dev->radio_dev,1908 &cx231xx_radio_template, "radio");1909 dev->radio_dev.ctrl_handler = &dev->radio_ctrl_handler;1910 dev->radio_dev.device_caps = V4L2_CAP_RADIO | V4L2_CAP_TUNER;1911 ret = video_register_device(&dev->radio_dev, VFL_TYPE_RADIO,1912 radio_nr[dev->devno]);1913 if (ret < 0) {1914 dev_err(dev->dev,1915 "can't register radio device\n");1916 return ret;1917 }1918 dev_info(dev->dev, "Registered radio device as %s\n",1919 video_device_node_name(&dev->radio_dev));1920 }1921 1922 return 0;1923}1924