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1// SPDX-License-Identifier: GPL-2.0-or-later2/*3 * Copyright (C) 2010-2013 Bluecherry, LLC <https://www.bluecherrydvr.com>4 *5 * Original author:6 * Ben Collins <bcollins@ubuntu.com>7 *8 * Additional work by:9 * John Brooks <john.brooks@bluecherry.net>10 */11 12#include <linux/kernel.h>13#include <linux/module.h>14#include <linux/kthread.h>15#include <linux/freezer.h>16 17#include <media/v4l2-ioctl.h>18#include <media/v4l2-common.h>19#include <media/v4l2-event.h>20#include <media/videobuf2-v4l2.h>21#include <media/videobuf2-dma-contig.h>22 23#include "solo6x10.h"24#include "solo6x10-tw28.h"25 26/* Image size is two fields, SOLO_HW_BPL is one horizontal line in hardware */27#define SOLO_HW_BPL 204828#define solo_vlines(__solo) (__solo->video_vsize * 2)29#define solo_image_size(__solo) (solo_bytesperline(__solo) * \30 solo_vlines(__solo))31#define solo_bytesperline(__solo) (__solo->video_hsize * 2)32 33#define MIN_VID_BUFFERS 234 35static inline void erase_on(struct solo_dev *solo_dev)36{37 solo_reg_write(solo_dev, SOLO_VO_DISP_ERASE, SOLO_VO_DISP_ERASE_ON);38 solo_dev->erasing = 1;39 solo_dev->frame_blank = 0;40}41 42static inline int erase_off(struct solo_dev *solo_dev)43{44 if (!solo_dev->erasing)45 return 0;46 47 /* First time around, assert erase off */48 if (!solo_dev->frame_blank)49 solo_reg_write(solo_dev, SOLO_VO_DISP_ERASE, 0);50 /* Keep the erasing flag on for 8 frames minimum */51 if (solo_dev->frame_blank++ >= 8)52 solo_dev->erasing = 0;53 54 return 1;55}56 57void solo_video_in_isr(struct solo_dev *solo_dev)58{59 wake_up_interruptible_all(&solo_dev->disp_thread_wait);60}61 62static void solo_win_setup(struct solo_dev *solo_dev, u8 ch,63 int sx, int sy, int ex, int ey, int scale)64{65 if (ch >= solo_dev->nr_chans)66 return;67 68 /* Here, we just keep window/channel the same */69 solo_reg_write(solo_dev, SOLO_VI_WIN_CTRL0(ch),70 SOLO_VI_WIN_CHANNEL(ch) |71 SOLO_VI_WIN_SX(sx) |72 SOLO_VI_WIN_EX(ex) |73 SOLO_VI_WIN_SCALE(scale));74 75 solo_reg_write(solo_dev, SOLO_VI_WIN_CTRL1(ch),76 SOLO_VI_WIN_SY(sy) |77 SOLO_VI_WIN_EY(ey));78}79 80static int solo_v4l2_ch_ext_4up(struct solo_dev *solo_dev, u8 idx, int on)81{82 u8 ch = idx * 4;83 84 if (ch >= solo_dev->nr_chans)85 return -EINVAL;86 87 if (!on) {88 u8 i;89 90 for (i = ch; i < ch + 4; i++)91 solo_win_setup(solo_dev, i, solo_dev->video_hsize,92 solo_vlines(solo_dev),93 solo_dev->video_hsize,94 solo_vlines(solo_dev), 0);95 return 0;96 }97 98 /* Row 1 */99 solo_win_setup(solo_dev, ch, 0, 0, solo_dev->video_hsize / 2,100 solo_vlines(solo_dev) / 2, 3);101 solo_win_setup(solo_dev, ch + 1, solo_dev->video_hsize / 2, 0,102 solo_dev->video_hsize, solo_vlines(solo_dev) / 2, 3);103 /* Row 2 */104 solo_win_setup(solo_dev, ch + 2, 0, solo_vlines(solo_dev) / 2,105 solo_dev->video_hsize / 2, solo_vlines(solo_dev), 3);106 solo_win_setup(solo_dev, ch + 3, solo_dev->video_hsize / 2,107 solo_vlines(solo_dev) / 2, solo_dev->video_hsize,108 solo_vlines(solo_dev), 3);109 110 return 0;111}112 113static int solo_v4l2_ch_ext_16up(struct solo_dev *solo_dev, int on)114{115 int sy, ysize, hsize, i;116 117 if (!on) {118 for (i = 0; i < 16; i++)119 solo_win_setup(solo_dev, i, solo_dev->video_hsize,120 solo_vlines(solo_dev),121 solo_dev->video_hsize,122 solo_vlines(solo_dev), 0);123 return 0;124 }125 126 ysize = solo_vlines(solo_dev) / 4;127 hsize = solo_dev->video_hsize / 4;128 129 for (sy = 0, i = 0; i < 4; i++, sy += ysize) {130 solo_win_setup(solo_dev, i * 4, 0, sy, hsize,131 sy + ysize, 5);132 solo_win_setup(solo_dev, (i * 4) + 1, hsize, sy,133 hsize * 2, sy + ysize, 5);134 solo_win_setup(solo_dev, (i * 4) + 2, hsize * 2, sy,135 hsize * 3, sy + ysize, 5);136 solo_win_setup(solo_dev, (i * 4) + 3, hsize * 3, sy,137 solo_dev->video_hsize, sy + ysize, 5);138 }139 140 return 0;141}142 143static int solo_v4l2_ch(struct solo_dev *solo_dev, u8 ch, int on)144{145 u8 ext_ch;146 147 if (ch < solo_dev->nr_chans) {148 solo_win_setup(solo_dev, ch, on ? 0 : solo_dev->video_hsize,149 on ? 0 : solo_vlines(solo_dev),150 solo_dev->video_hsize, solo_vlines(solo_dev),151 on ? 1 : 0);152 return 0;153 }154 155 if (ch >= solo_dev->nr_chans + solo_dev->nr_ext)156 return -EINVAL;157 158 ext_ch = ch - solo_dev->nr_chans;159 160 /* 4up's first */161 if (ext_ch < 4)162 return solo_v4l2_ch_ext_4up(solo_dev, ext_ch, on);163 164 /* Remaining case is 16up for 16-port */165 return solo_v4l2_ch_ext_16up(solo_dev, on);166}167 168static int solo_v4l2_set_ch(struct solo_dev *solo_dev, u8 ch)169{170 if (ch >= solo_dev->nr_chans + solo_dev->nr_ext)171 return -EINVAL;172 173 erase_on(solo_dev);174 175 solo_v4l2_ch(solo_dev, solo_dev->cur_disp_ch, 0);176 solo_v4l2_ch(solo_dev, ch, 1);177 178 solo_dev->cur_disp_ch = ch;179 180 return 0;181}182 183static void solo_fillbuf(struct solo_dev *solo_dev,184 struct vb2_buffer *vb)185{186 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);187 dma_addr_t addr;188 unsigned int fdma_addr;189 int error = -1;190 int i;191 192 addr = vb2_dma_contig_plane_dma_addr(vb, 0);193 if (!addr)194 goto finish_buf;195 196 if (erase_off(solo_dev)) {197 void *p = vb2_plane_vaddr(vb, 0);198 int image_size = solo_image_size(solo_dev);199 200 for (i = 0; i < image_size; i += 2) {201 ((u8 *)p)[i] = 0x80;202 ((u8 *)p)[i + 1] = 0x00;203 }204 error = 0;205 } else {206 fdma_addr = SOLO_DISP_EXT_ADDR + (solo_dev->old_write *207 (SOLO_HW_BPL * solo_vlines(solo_dev)));208 209 error = solo_p2m_dma_t(solo_dev, 0, addr, fdma_addr,210 solo_bytesperline(solo_dev),211 solo_vlines(solo_dev), SOLO_HW_BPL);212 }213 214finish_buf:215 if (!error) {216 vb2_set_plane_payload(vb, 0,217 solo_vlines(solo_dev) * solo_bytesperline(solo_dev));218 vbuf->sequence = solo_dev->sequence++;219 vb->timestamp = ktime_get_ns();220 }221 222 vb2_buffer_done(vb, error ? VB2_BUF_STATE_ERROR : VB2_BUF_STATE_DONE);223}224 225static void solo_thread_try(struct solo_dev *solo_dev)226{227 struct solo_vb2_buf *vb;228 229 /* Only "break" from this loop if slock is held, otherwise230 * just return. */231 for (;;) {232 unsigned int cur_write;233 234 cur_write = SOLO_VI_STATUS0_PAGE(235 solo_reg_read(solo_dev, SOLO_VI_STATUS0));236 if (cur_write == solo_dev->old_write)237 return;238 239 spin_lock(&solo_dev->slock);240 241 if (list_empty(&solo_dev->vidq_active))242 break;243 244 vb = list_first_entry(&solo_dev->vidq_active, struct solo_vb2_buf,245 list);246 247 solo_dev->old_write = cur_write;248 list_del(&vb->list);249 250 spin_unlock(&solo_dev->slock);251 252 solo_fillbuf(solo_dev, &vb->vb.vb2_buf);253 }254 255 assert_spin_locked(&solo_dev->slock);256 spin_unlock(&solo_dev->slock);257}258 259static int solo_thread(void *data)260{261 struct solo_dev *solo_dev = data;262 DECLARE_WAITQUEUE(wait, current);263 264 set_freezable();265 add_wait_queue(&solo_dev->disp_thread_wait, &wait);266 267 for (;;) {268 long timeout = schedule_timeout_interruptible(HZ);269 270 if (timeout == -ERESTARTSYS || kthread_should_stop())271 break;272 solo_thread_try(solo_dev);273 try_to_freeze();274 }275 276 remove_wait_queue(&solo_dev->disp_thread_wait, &wait);277 278 return 0;279}280 281static int solo_start_thread(struct solo_dev *solo_dev)282{283 int ret = 0;284 285 solo_dev->kthread = kthread_run(solo_thread, solo_dev, SOLO6X10_NAME "_disp");286 287 if (IS_ERR(solo_dev->kthread)) {288 ret = PTR_ERR(solo_dev->kthread);289 solo_dev->kthread = NULL;290 return ret;291 }292 solo_irq_on(solo_dev, SOLO_IRQ_VIDEO_IN);293 294 return ret;295}296 297static void solo_stop_thread(struct solo_dev *solo_dev)298{299 if (!solo_dev->kthread)300 return;301 302 solo_irq_off(solo_dev, SOLO_IRQ_VIDEO_IN);303 kthread_stop(solo_dev->kthread);304 solo_dev->kthread = NULL;305}306 307static int solo_queue_setup(struct vb2_queue *q,308 unsigned int *num_buffers, unsigned int *num_planes,309 unsigned int sizes[], struct device *alloc_devs[])310{311 struct solo_dev *solo_dev = vb2_get_drv_priv(q);312 313 sizes[0] = solo_image_size(solo_dev);314 *num_planes = 1;315 316 if (*num_buffers < MIN_VID_BUFFERS)317 *num_buffers = MIN_VID_BUFFERS;318 319 return 0;320}321 322static int solo_start_streaming(struct vb2_queue *q, unsigned int count)323{324 struct solo_dev *solo_dev = vb2_get_drv_priv(q);325 326 solo_dev->sequence = 0;327 return solo_start_thread(solo_dev);328}329 330static void solo_stop_streaming(struct vb2_queue *q)331{332 struct solo_dev *solo_dev = vb2_get_drv_priv(q);333 334 solo_stop_thread(solo_dev);335 336 spin_lock(&solo_dev->slock);337 while (!list_empty(&solo_dev->vidq_active)) {338 struct solo_vb2_buf *buf = list_entry(339 solo_dev->vidq_active.next,340 struct solo_vb2_buf, list);341 342 list_del(&buf->list);343 vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_ERROR);344 }345 spin_unlock(&solo_dev->slock);346 INIT_LIST_HEAD(&solo_dev->vidq_active);347}348 349static void solo_buf_queue(struct vb2_buffer *vb)350{351 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);352 struct vb2_queue *vq = vb->vb2_queue;353 struct solo_dev *solo_dev = vb2_get_drv_priv(vq);354 struct solo_vb2_buf *solo_vb =355 container_of(vbuf, struct solo_vb2_buf, vb);356 357 spin_lock(&solo_dev->slock);358 list_add_tail(&solo_vb->list, &solo_dev->vidq_active);359 spin_unlock(&solo_dev->slock);360 wake_up_interruptible(&solo_dev->disp_thread_wait);361}362 363static const struct vb2_ops solo_video_qops = {364 .queue_setup = solo_queue_setup,365 .buf_queue = solo_buf_queue,366 .start_streaming = solo_start_streaming,367 .stop_streaming = solo_stop_streaming,368 .wait_prepare = vb2_ops_wait_prepare,369 .wait_finish = vb2_ops_wait_finish,370};371 372static int solo_querycap(struct file *file, void *priv,373 struct v4l2_capability *cap)374{375 strscpy(cap->driver, SOLO6X10_NAME, sizeof(cap->driver));376 strscpy(cap->card, "Softlogic 6x10", sizeof(cap->card));377 return 0;378}379 380static int solo_enum_ext_input(struct solo_dev *solo_dev,381 struct v4l2_input *input)382{383 int ext = input->index - solo_dev->nr_chans;384 unsigned int nup, first;385 386 if (ext >= solo_dev->nr_ext)387 return -EINVAL;388 389 nup = (ext == 4) ? 16 : 4;390 first = (ext & 3) << 2; /* first channel in the n-up */391 snprintf(input->name, sizeof(input->name),392 "Multi %d-up (cameras %d-%d)",393 nup, first + 1, first + nup);394 /* Possible outputs:395 * Multi 4-up (cameras 1-4)396 * Multi 4-up (cameras 5-8)397 * Multi 4-up (cameras 9-12)398 * Multi 4-up (cameras 13-16)399 * Multi 16-up (cameras 1-16)400 */401 return 0;402}403 404static int solo_enum_input(struct file *file, void *priv,405 struct v4l2_input *input)406{407 struct solo_dev *solo_dev = video_drvdata(file);408 409 if (input->index >= solo_dev->nr_chans) {410 int ret = solo_enum_ext_input(solo_dev, input);411 412 if (ret < 0)413 return ret;414 } else {415 snprintf(input->name, sizeof(input->name), "Camera %d",416 input->index + 1);417 418 /* We can only check this for normal inputs */419 if (!tw28_get_video_status(solo_dev, input->index))420 input->status = V4L2_IN_ST_NO_SIGNAL;421 }422 423 input->type = V4L2_INPUT_TYPE_CAMERA;424 input->std = solo_dev->vfd->tvnorms;425 return 0;426}427 428static int solo_set_input(struct file *file, void *priv, unsigned int index)429{430 struct solo_dev *solo_dev = video_drvdata(file);431 int ret = solo_v4l2_set_ch(solo_dev, index);432 433 if (!ret) {434 while (erase_off(solo_dev))435 /* Do nothing */;436 }437 438 return ret;439}440 441static int solo_get_input(struct file *file, void *priv, unsigned int *index)442{443 struct solo_dev *solo_dev = video_drvdata(file);444 445 *index = solo_dev->cur_disp_ch;446 447 return 0;448}449 450static int solo_enum_fmt_cap(struct file *file, void *priv,451 struct v4l2_fmtdesc *f)452{453 if (f->index)454 return -EINVAL;455 456 f->pixelformat = V4L2_PIX_FMT_UYVY;457 return 0;458}459 460static int solo_try_fmt_cap(struct file *file, void *priv,461 struct v4l2_format *f)462{463 struct solo_dev *solo_dev = video_drvdata(file);464 struct v4l2_pix_format *pix = &f->fmt.pix;465 int image_size = solo_image_size(solo_dev);466 467 if (pix->pixelformat != V4L2_PIX_FMT_UYVY)468 return -EINVAL;469 470 pix->width = solo_dev->video_hsize;471 pix->height = solo_vlines(solo_dev);472 pix->sizeimage = image_size;473 pix->field = V4L2_FIELD_INTERLACED;474 pix->pixelformat = V4L2_PIX_FMT_UYVY;475 pix->colorspace = V4L2_COLORSPACE_SMPTE170M;476 return 0;477}478 479static int solo_set_fmt_cap(struct file *file, void *priv,480 struct v4l2_format *f)481{482 struct solo_dev *solo_dev = video_drvdata(file);483 484 if (vb2_is_busy(&solo_dev->vidq))485 return -EBUSY;486 487 /* For right now, if it doesn't match our running config,488 * then fail */489 return solo_try_fmt_cap(file, priv, f);490}491 492static int solo_get_fmt_cap(struct file *file, void *priv,493 struct v4l2_format *f)494{495 struct solo_dev *solo_dev = video_drvdata(file);496 struct v4l2_pix_format *pix = &f->fmt.pix;497 498 pix->width = solo_dev->video_hsize;499 pix->height = solo_vlines(solo_dev);500 pix->pixelformat = V4L2_PIX_FMT_UYVY;501 pix->field = V4L2_FIELD_INTERLACED;502 pix->sizeimage = solo_image_size(solo_dev);503 pix->colorspace = V4L2_COLORSPACE_SMPTE170M;504 pix->bytesperline = solo_bytesperline(solo_dev);505 506 return 0;507}508 509static int solo_g_std(struct file *file, void *priv, v4l2_std_id *i)510{511 struct solo_dev *solo_dev = video_drvdata(file);512 513 if (solo_dev->video_type == SOLO_VO_FMT_TYPE_NTSC)514 *i = V4L2_STD_NTSC_M;515 else516 *i = V4L2_STD_PAL;517 return 0;518}519 520int solo_set_video_type(struct solo_dev *solo_dev, bool is_50hz)521{522 int i;523 524 /* Make sure all video nodes are idle */525 if (vb2_is_busy(&solo_dev->vidq))526 return -EBUSY;527 for (i = 0; i < solo_dev->nr_chans; i++)528 if (vb2_is_busy(&solo_dev->v4l2_enc[i]->vidq))529 return -EBUSY;530 solo_dev->video_type = is_50hz ? SOLO_VO_FMT_TYPE_PAL :531 SOLO_VO_FMT_TYPE_NTSC;532 /* Reconfigure for the new standard */533 solo_disp_init(solo_dev);534 solo_enc_init(solo_dev);535 solo_tw28_init(solo_dev);536 for (i = 0; i < solo_dev->nr_chans; i++)537 solo_update_mode(solo_dev->v4l2_enc[i]);538 return solo_v4l2_set_ch(solo_dev, solo_dev->cur_disp_ch);539}540 541static int solo_s_std(struct file *file, void *priv, v4l2_std_id std)542{543 struct solo_dev *solo_dev = video_drvdata(file);544 545 return solo_set_video_type(solo_dev, std & V4L2_STD_625_50);546}547 548static int solo_s_ctrl(struct v4l2_ctrl *ctrl)549{550 struct solo_dev *solo_dev =551 container_of(ctrl->handler, struct solo_dev, disp_hdl);552 553 switch (ctrl->id) {554 case V4L2_CID_MOTION_TRACE:555 if (ctrl->val) {556 solo_reg_write(solo_dev, SOLO_VI_MOTION_BORDER,557 SOLO_VI_MOTION_Y_ADD |558 SOLO_VI_MOTION_Y_VALUE(0x20) |559 SOLO_VI_MOTION_CB_VALUE(0x10) |560 SOLO_VI_MOTION_CR_VALUE(0x10));561 solo_reg_write(solo_dev, SOLO_VI_MOTION_BAR,562 SOLO_VI_MOTION_CR_ADD |563 SOLO_VI_MOTION_Y_VALUE(0x10) |564 SOLO_VI_MOTION_CB_VALUE(0x80) |565 SOLO_VI_MOTION_CR_VALUE(0x10));566 } else {567 solo_reg_write(solo_dev, SOLO_VI_MOTION_BORDER, 0);568 solo_reg_write(solo_dev, SOLO_VI_MOTION_BAR, 0);569 }570 return 0;571 default:572 break;573 }574 return -EINVAL;575}576 577static const struct v4l2_file_operations solo_v4l2_fops = {578 .owner = THIS_MODULE,579 .open = v4l2_fh_open,580 .release = vb2_fop_release,581 .read = vb2_fop_read,582 .poll = vb2_fop_poll,583 .mmap = vb2_fop_mmap,584 .unlocked_ioctl = video_ioctl2,585};586 587static const struct v4l2_ioctl_ops solo_v4l2_ioctl_ops = {588 .vidioc_querycap = solo_querycap,589 .vidioc_s_std = solo_s_std,590 .vidioc_g_std = solo_g_std,591 /* Input callbacks */592 .vidioc_enum_input = solo_enum_input,593 .vidioc_s_input = solo_set_input,594 .vidioc_g_input = solo_get_input,595 /* Video capture format callbacks */596 .vidioc_enum_fmt_vid_cap = solo_enum_fmt_cap,597 .vidioc_try_fmt_vid_cap = solo_try_fmt_cap,598 .vidioc_s_fmt_vid_cap = solo_set_fmt_cap,599 .vidioc_g_fmt_vid_cap = solo_get_fmt_cap,600 /* Streaming I/O */601 .vidioc_reqbufs = vb2_ioctl_reqbufs,602 .vidioc_querybuf = vb2_ioctl_querybuf,603 .vidioc_qbuf = vb2_ioctl_qbuf,604 .vidioc_dqbuf = vb2_ioctl_dqbuf,605 .vidioc_streamon = vb2_ioctl_streamon,606 .vidioc_streamoff = vb2_ioctl_streamoff,607 /* Logging and events */608 .vidioc_log_status = v4l2_ctrl_log_status,609 .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,610 .vidioc_unsubscribe_event = v4l2_event_unsubscribe,611};612 613static const struct video_device solo_v4l2_template = {614 .name = SOLO6X10_NAME,615 .fops = &solo_v4l2_fops,616 .ioctl_ops = &solo_v4l2_ioctl_ops,617 .minor = -1,618 .release = video_device_release,619 .tvnorms = V4L2_STD_NTSC_M | V4L2_STD_PAL,620 .device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_READWRITE |621 V4L2_CAP_STREAMING,622};623 624static const struct v4l2_ctrl_ops solo_ctrl_ops = {625 .s_ctrl = solo_s_ctrl,626};627 628static const struct v4l2_ctrl_config solo_motion_trace_ctrl = {629 .ops = &solo_ctrl_ops,630 .id = V4L2_CID_MOTION_TRACE,631 .name = "Motion Detection Trace",632 .type = V4L2_CTRL_TYPE_BOOLEAN,633 .max = 1,634 .step = 1,635};636 637int solo_v4l2_init(struct solo_dev *solo_dev, unsigned nr)638{639 int ret;640 int i;641 642 init_waitqueue_head(&solo_dev->disp_thread_wait);643 spin_lock_init(&solo_dev->slock);644 mutex_init(&solo_dev->lock);645 INIT_LIST_HEAD(&solo_dev->vidq_active);646 647 solo_dev->vfd = video_device_alloc();648 if (!solo_dev->vfd)649 return -ENOMEM;650 651 *solo_dev->vfd = solo_v4l2_template;652 solo_dev->vfd->v4l2_dev = &solo_dev->v4l2_dev;653 solo_dev->vfd->queue = &solo_dev->vidq;654 solo_dev->vfd->lock = &solo_dev->lock;655 v4l2_ctrl_handler_init(&solo_dev->disp_hdl, 1);656 v4l2_ctrl_new_custom(&solo_dev->disp_hdl, &solo_motion_trace_ctrl, NULL);657 if (solo_dev->disp_hdl.error) {658 ret = solo_dev->disp_hdl.error;659 goto fail;660 }661 solo_dev->vfd->ctrl_handler = &solo_dev->disp_hdl;662 663 video_set_drvdata(solo_dev->vfd, solo_dev);664 665 solo_dev->vidq.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;666 solo_dev->vidq.io_modes = VB2_MMAP | VB2_USERPTR | VB2_READ;667 solo_dev->vidq.ops = &solo_video_qops;668 solo_dev->vidq.mem_ops = &vb2_dma_contig_memops;669 solo_dev->vidq.drv_priv = solo_dev;670 solo_dev->vidq.timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;671 solo_dev->vidq.gfp_flags = __GFP_DMA32 | __GFP_KSWAPD_RECLAIM;672 solo_dev->vidq.buf_struct_size = sizeof(struct solo_vb2_buf);673 solo_dev->vidq.lock = &solo_dev->lock;674 solo_dev->vidq.dev = &solo_dev->pdev->dev;675 ret = vb2_queue_init(&solo_dev->vidq);676 if (ret < 0)677 goto fail;678 679 /* Cycle all the channels and clear */680 for (i = 0; i < solo_dev->nr_chans; i++) {681 solo_v4l2_set_ch(solo_dev, i);682 while (erase_off(solo_dev))683 /* Do nothing */;684 }685 686 /* Set the default display channel */687 solo_v4l2_set_ch(solo_dev, 0);688 while (erase_off(solo_dev))689 /* Do nothing */;690 691 ret = video_register_device(solo_dev->vfd, VFL_TYPE_VIDEO, nr);692 if (ret < 0)693 goto fail;694 695 snprintf(solo_dev->vfd->name, sizeof(solo_dev->vfd->name), "%s (%i)",696 SOLO6X10_NAME, solo_dev->vfd->num);697 698 dev_info(&solo_dev->pdev->dev, "Display as /dev/video%d with %d inputs (%d extended)\n",699 solo_dev->vfd->num,700 solo_dev->nr_chans, solo_dev->nr_ext);701 702 return 0;703 704fail:705 video_device_release(solo_dev->vfd);706 v4l2_ctrl_handler_free(&solo_dev->disp_hdl);707 solo_dev->vfd = NULL;708 return ret;709}710 711void solo_v4l2_exit(struct solo_dev *solo_dev)712{713 if (solo_dev->vfd == NULL)714 return;715 716 video_unregister_device(solo_dev->vfd);717 v4l2_ctrl_handler_free(&solo_dev->disp_hdl);718 solo_dev->vfd = NULL;719}720