/* * Driver for the Conexant CX25821 PCIe bridge * * Copyright (C) 2009 Conexant Systems Inc. * Authors , * Based on Steven Toth cx23885 driver * Parts adapted/taken from Eduardo Moscoso Rubino * Copyright (C) 2009 Eduardo Moscoso Rubino * * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt #include "cx25821-video.h" MODULE_DESCRIPTION("v4l2 driver module for cx25821 based TV cards"); MODULE_AUTHOR("Hiep Huynh "); MODULE_LICENSE("GPL"); static unsigned int video_nr[] = {[0 ... (CX25821_MAXBOARDS - 1)] = UNSET }; module_param_array(video_nr, int, NULL, 0444); MODULE_PARM_DESC(video_nr, "video device numbers"); static unsigned int video_debug = VIDEO_DEBUG; module_param(video_debug, int, 0644); MODULE_PARM_DESC(video_debug, "enable debug messages [video]"); static unsigned int irq_debug; module_param(irq_debug, int, 0644); MODULE_PARM_DESC(irq_debug, "enable debug messages [IRQ handler]"); static unsigned int vid_limit = 16; module_param(vid_limit, int, 0644); MODULE_PARM_DESC(vid_limit, "capture memory limit in megabytes"); #define FORMAT_FLAGS_PACKED 0x01 static const struct cx25821_fmt formats[] = { { .name = "8 bpp, gray", .fourcc = V4L2_PIX_FMT_GREY, .depth = 8, .flags = FORMAT_FLAGS_PACKED, }, { .name = "4:1:1, packed, Y41P", .fourcc = V4L2_PIX_FMT_Y41P, .depth = 12, .flags = FORMAT_FLAGS_PACKED, }, { .name = "4:2:2, packed, YUYV", .fourcc = V4L2_PIX_FMT_YUYV, .depth = 16, .flags = FORMAT_FLAGS_PACKED, }, { .name = "4:2:2, packed, UYVY", .fourcc = V4L2_PIX_FMT_UYVY, .depth = 16, .flags = FORMAT_FLAGS_PACKED, }, { .name = "4:2:0, YUV", .fourcc = V4L2_PIX_FMT_YUV420, .depth = 12, .flags = FORMAT_FLAGS_PACKED, }, }; static const struct cx25821_fmt *cx25821_format_by_fourcc(unsigned int fourcc) { unsigned int i; if (fourcc == V4L2_PIX_FMT_Y41P || fourcc == V4L2_PIX_FMT_YUV411P) return formats + 1; for (i = 0; i < ARRAY_SIZE(formats); i++) if (formats[i].fourcc == fourcc) return formats + i; pr_err("%s(0x%08x) NOT FOUND\n", __func__, fourcc); return NULL; } void cx25821_video_wakeup(struct cx25821_dev *dev, struct cx25821_dmaqueue *q, u32 count) { struct cx25821_buffer *buf; int bc; for (bc = 0;; bc++) { if (list_empty(&q->active)) { dprintk(1, "bc=%d (=0: active empty)\n", bc); break; } buf = list_entry(q->active.next, struct cx25821_buffer, vb.queue); /* count comes from the hw and it is 16bit wide -- * this trick handles wrap-arounds correctly for * up to 32767 buffers in flight... */ if ((s16) (count - buf->count) < 0) break; v4l2_get_timestamp(&buf->vb.ts); buf->vb.state = VIDEOBUF_DONE; list_del(&buf->vb.queue); wake_up(&buf->vb.done); } if (list_empty(&q->active)) del_timer(&q->timeout); else mod_timer(&q->timeout, jiffies + BUFFER_TIMEOUT); if (bc != 1) pr_err("%s: %d buffers handled (should be 1)\n", __func__, bc); } static int cx25821_set_tvnorm(struct cx25821_dev *dev, v4l2_std_id norm) { dprintk(1, "%s(norm = 0x%08x) name: [%s]\n", __func__, (unsigned int)norm, v4l2_norm_to_name(norm)); dev->tvnorm = norm; /* Tell the internal A/V decoder */ cx25821_call_all(dev, core, s_std, norm); return 0; } static struct video_device *cx25821_vdev_init(struct cx25821_dev *dev, struct pci_dev *pci, const struct video_device *template, char *type) { struct video_device *vfd; dprintk(1, "%s()\n", __func__); vfd = video_device_alloc(); if (NULL == vfd) return NULL; *vfd = *template; vfd->v4l2_dev = &dev->v4l2_dev; vfd->release = video_device_release; snprintf(vfd->name, sizeof(vfd->name), "%s %s (%s)", dev->name, type, cx25821_boards[dev->board].name); video_set_drvdata(vfd, dev); return vfd; } /* static int cx25821_ctrl_query(struct v4l2_queryctrl *qctrl) { int i; if (qctrl->id < V4L2_CID_BASE || qctrl->id >= V4L2_CID_LASTP1) return -EINVAL; for (i = 0; i < CX25821_CTLS; i++) if (cx25821_ctls[i].v.id == qctrl->id) break; if (i == CX25821_CTLS) { *qctrl = no_ctl; return 0; } *qctrl = cx25821_ctls[i].v; return 0; } */ /* resource management */ int cx25821_res_get(struct cx25821_dev *dev, struct cx25821_fh *fh, unsigned int bit) { dprintk(1, "%s()\n", __func__); if (fh->resources & bit) /* have it already allocated */ return 1; /* is it free? */ mutex_lock(&dev->lock); if (dev->channels[fh->channel_id].resources & bit) { /* no, someone else uses it */ mutex_unlock(&dev->lock); return 0; } /* it's free, grab it */ fh->resources |= bit; dev->channels[fh->channel_id].resources |= bit; dprintk(1, "res: get %d\n", bit); mutex_unlock(&dev->lock); return 1; } int cx25821_res_check(struct cx25821_fh *fh, unsigned int bit) { return fh->resources & bit; } int cx25821_res_locked(struct cx25821_fh *fh, unsigned int bit) { return fh->dev->channels[fh->channel_id].resources & bit; } void cx25821_res_free(struct cx25821_dev *dev, struct cx25821_fh *fh, unsigned int bits) { BUG_ON((fh->resources & bits) != bits); dprintk(1, "%s()\n", __func__); mutex_lock(&dev->lock); fh->resources &= ~bits; dev->channels[fh->channel_id].resources &= ~bits; dprintk(1, "res: put %d\n", bits); mutex_unlock(&dev->lock); } static int cx25821_video_mux(struct cx25821_dev *dev, unsigned int input) { struct v4l2_routing route; memset(&route, 0, sizeof(route)); dprintk(1, "%s(): video_mux: %d [vmux=%d, gpio=0x%x,0x%x,0x%x,0x%x]\n", __func__, input, INPUT(input)->vmux, INPUT(input)->gpio0, INPUT(input)->gpio1, INPUT(input)->gpio2, INPUT(input)->gpio3); dev->input = input; route.input = INPUT(input)->vmux; /* Tell the internal A/V decoder */ cx25821_call_all(dev, video, s_routing, INPUT(input)->vmux, 0, 0); return 0; } int cx25821_start_video_dma(struct cx25821_dev *dev, struct cx25821_dmaqueue *q, struct cx25821_buffer *buf, const struct sram_channel *channel) { int tmp = 0; /* setup fifo + format */ cx25821_sram_channel_setup(dev, channel, buf->bpl, buf->risc.dma); /* reset counter */ cx_write(channel->gpcnt_ctl, 3); q->count = 1; /* enable irq */ cx_set(PCI_INT_MSK, cx_read(PCI_INT_MSK) | (1 << channel->i)); cx_set(channel->int_msk, 0x11); /* start dma */ cx_write(channel->dma_ctl, 0x11); /* FIFO and RISC enable */ /* make sure upstream setting if any is reversed */ tmp = cx_read(VID_CH_MODE_SEL); cx_write(VID_CH_MODE_SEL, tmp & 0xFFFFFE00); return 0; } static int cx25821_restart_video_queue(struct cx25821_dev *dev, struct cx25821_dmaqueue *q, const struct sram_channel *channel) { struct cx25821_buffer *buf, *prev; struct list_head *item; if (!list_empty(&q->active)) { buf = list_entry(q->active.next, struct cx25821_buffer, vb.queue); cx25821_start_video_dma(dev, q, buf, channel); list_for_each(item, &q->active) { buf = list_entry(item, struct cx25821_buffer, vb.queue); buf->count = q->count++; } mod_timer(&q->timeout, jiffies + BUFFER_TIMEOUT); return 0; } prev = NULL; for (;;) { if (list_empty(&q->queued)) return 0; buf = list_entry(q->queued.next, struct cx25821_buffer, vb.queue); if (NULL == prev) { list_move_tail(&buf->vb.queue, &q->active); cx25821_start_video_dma(dev, q, buf, channel); buf->vb.state = VIDEOBUF_ACTIVE; buf->count = q->count++; mod_timer(&q->timeout, jiffies + BUFFER_TIMEOUT); } else if (prev->vb.width == buf->vb.width && prev->vb.height == buf->vb.height && prev->fmt == buf->fmt) { list_move_tail(&buf->vb.queue, &q->active); buf->vb.state = VIDEOBUF_ACTIVE; buf->count = q->count++; prev->risc.jmp[1] = cpu_to_le32(buf->risc.dma); prev->risc.jmp[2] = cpu_to_le32(0); /* Bits 63 - 32 */ } else { return 0; } prev = buf; } } static void cx25821_vid_timeout(unsigned long data) { struct cx25821_data *timeout_data = (struct cx25821_data *)data; struct cx25821_dev *dev = timeout_data->dev; const struct sram_channel *channel = timeout_data->channel; struct cx25821_dmaqueue *q = &dev->channels[channel->i].vidq; struct cx25821_buffer *buf; unsigned long flags; /* cx25821_sram_channel_dump(dev, channel); */ cx_clear(channel->dma_ctl, 0x11); spin_lock_irqsave(&dev->slock, flags); while (!list_empty(&q->active)) { buf = list_entry(q->active.next, struct cx25821_buffer, vb.queue); list_del(&buf->vb.queue); buf->vb.state = VIDEOBUF_ERROR; wake_up(&buf->vb.done); } cx25821_restart_video_queue(dev, q, channel); spin_unlock_irqrestore(&dev->slock, flags); } int cx25821_video_irq(struct cx25821_dev *dev, int chan_num, u32 status) { u32 count = 0; int handled = 0; u32 mask; const struct sram_channel *channel = dev->channels[chan_num].sram_channels; mask = cx_read(channel->int_msk); if (0 == (status & mask)) return handled; cx_write(channel->int_stat, status); /* risc op code error */ if (status & (1 << 16)) { pr_warn("%s, %s: video risc op code error\n", dev->name, channel->name); cx_clear(channel->dma_ctl, 0x11); cx25821_sram_channel_dump(dev, channel); } /* risc1 y */ if (status & FLD_VID_DST_RISC1) { spin_lock(&dev->slock); count = cx_read(channel->gpcnt); cx25821_video_wakeup(dev, &dev->channels[channel->i].vidq, count); spin_unlock(&dev->slock); handled++; } /* risc2 y */ if (status & 0x10) { dprintk(2, "stopper video\n"); spin_lock(&dev->slock); cx25821_restart_video_queue(dev, &dev->channels[channel->i].vidq, channel); spin_unlock(&dev->slock); handled++; } return handled; } static int cx25821_buffer_setup(struct videobuf_queue *q, unsigned int *count, unsigned int *size) { struct cx25821_fh *fh = q->priv_data; *size = fh->fmt->depth * fh->width * fh->height >> 3; if (0 == *count) *count = 32; if (*size * *count > vid_limit * 1024 * 1024) *count = (vid_limit * 1024 * 1024) / *size; return 0; } static int cx25821_buffer_prepare(struct videobuf_queue *q, struct videobuf_buffer *vb, enum v4l2_field field) { struct cx25821_fh *fh = q->priv_data; struct cx25821_dev *dev = fh->dev; struct cx25821_buffer *buf = container_of(vb, struct cx25821_buffer, vb); int rc, init_buffer = 0; u32 line0_offset; struct videobuf_dmabuf *dma = videobuf_to_dma(&buf->vb); int bpl_local = LINE_SIZE_D1; int channel_opened = fh->channel_id; BUG_ON(NULL == fh->fmt); if (fh->width < 48 || fh->width > 720 || fh->height < 32 || fh->height > 576) return -EINVAL; buf->vb.size = (fh->width * fh->height * fh->fmt->depth) >> 3; if (0 != buf->vb.baddr && buf->vb.bsize < buf->vb.size) return -EINVAL; if (buf->fmt != fh->fmt || buf->vb.width != fh->width || buf->vb.height != fh->height || buf->vb.field != field) { buf->fmt = fh->fmt; buf->vb.width = fh->width; buf->vb.height = fh->height; buf->vb.field = field; init_buffer = 1; } if (VIDEOBUF_NEEDS_INIT == buf->vb.state) { init_buffer = 1; rc = videobuf_iolock(q, &buf->vb, NULL); if (0 != rc) { printk(KERN_DEBUG pr_fmt("videobuf_iolock failed!\n")); goto fail; } } dprintk(1, "init_buffer=%d\n", init_buffer); if (init_buffer) { channel_opened = dev->channel_opened; if (channel_opened < 0 || channel_opened > 7) channel_opened = 7; if (dev->channels[channel_opened].pixel_formats == PIXEL_FRMT_411) buf->bpl = (buf->fmt->depth * buf->vb.width) >> 3; else buf->bpl = (buf->fmt->depth >> 3) * (buf->vb.width); if (dev->channels[channel_opened].pixel_formats == PIXEL_FRMT_411) { bpl_local = buf->bpl; } else { bpl_local = buf->bpl; /* Default */ if (channel_opened >= 0 && channel_opened <= 7) { if (dev->channels[channel_opened] .use_cif_resolution) { if (dev->tvnorm & V4L2_STD_PAL_BG || dev->tvnorm & V4L2_STD_PAL_DK) bpl_local = 352 << 1; else bpl_local = dev->channels[ channel_opened]. cif_width << 1; } } } switch (buf->vb.field) { case V4L2_FIELD_TOP: cx25821_risc_buffer(dev->pci, &buf->risc, dma->sglist, 0, UNSET, buf->bpl, 0, buf->vb.height); break; case V4L2_FIELD_BOTTOM: cx25821_risc_buffer(dev->pci, &buf->risc, dma->sglist, UNSET, 0, buf->bpl, 0, buf->vb.height); break; case V4L2_FIELD_INTERLACED: /* All other formats are top field first */ line0_offset = 0; dprintk(1, "top field first\n"); cx25821_risc_buffer(dev->pci, &buf->risc, dma->sglist, line0_offset, bpl_local, bpl_local, bpl_local, buf->vb.height >> 1); break; case V4L2_FIELD_SEQ_TB: cx25821_risc_buffer(dev->pci, &buf->risc, dma->sglist, 0, buf->bpl * (buf->vb.height >> 1), buf->bpl, 0, buf->vb.height >> 1); break; case V4L2_FIELD_SEQ_BT: cx25821_risc_buffer(dev->pci, &buf->risc, dma->sglist, buf->bpl * (buf->vb.height >> 1), 0, buf->bpl, 0, buf->vb.height >> 1); break; default: BUG(); } } dprintk(2, "[%p/%d] buffer_prep - %dx%d %dbpp \"%s\" - dma=0x%08lx\n", buf, buf->vb.i, fh->width, fh->height, fh->fmt->depth, fh->fmt->name, (unsigned long)buf->risc.dma); buf->vb.state = VIDEOBUF_PREPARED; return 0; fail: cx25821_free_buffer(q, buf); return rc; } static void cx25821_buffer_release(struct videobuf_queue *q, struct videobuf_buffer *vb) { struct cx25821_buffer *buf = container_of(vb, struct cx25821_buffer, vb); cx25821_free_buffer(q, buf); } static struct videobuf_queue *get_queue(struct cx25821_fh *fh) { switch (fh->type) { case V4L2_BUF_TYPE_VIDEO_CAPTURE: return &fh->vidq; default: BUG(); return NULL; } } static int cx25821_get_resource(struct cx25821_fh *fh, int resource) { switch (fh->type) { case V4L2_BUF_TYPE_VIDEO_CAPTURE: return resource; default: BUG(); return 0; } } static int cx25821_video_mmap(struct file *file, struct vm_area_struct *vma) { struct cx25821_fh *fh = file->private_data; return videobuf_mmap_mapper(get_queue(fh), vma); } static void buffer_queue(struct videobuf_queue *vq, struct videobuf_buffer *vb) { struct cx25821_buffer *buf = container_of(vb, struct cx25821_buffer, vb); struct cx25821_buffer *prev; struct cx25821_fh *fh = vq->priv_data; struct cx25821_dev *dev = fh->dev; struct cx25821_dmaqueue *q = &dev->channels[fh->channel_id].vidq; /* add jump to stopper */ buf->risc.jmp[0] = cpu_to_le32(RISC_JUMP | RISC_IRQ1 | RISC_CNT_INC); buf->risc.jmp[1] = cpu_to_le32(q->stopper.dma); buf->risc.jmp[2] = cpu_to_le32(0); /* bits 63-32 */ dprintk(2, "jmp to stopper (0x%x)\n", buf->risc.jmp[1]); if (!list_empty(&q->queued)) { list_add_tail(&buf->vb.queue, &q->queued); buf->vb.state = VIDEOBUF_QUEUED; dprintk(2, "[%p/%d] buffer_queue - append to queued\n", buf, buf->vb.i); } else if (list_empty(&q->active)) { list_add_tail(&buf->vb.queue, &q->active); cx25821_start_video_dma(dev, q, buf, dev->channels[fh->channel_id].sram_channels); buf->vb.state = VIDEOBUF_ACTIVE; buf->count = q->count++; mod_timer(&q->timeout, jiffies + BUFFER_TIMEOUT); dprintk(2, "[%p/%d] buffer_queue - first active, buf cnt = %d, q->count = %d\n", buf, buf->vb.i, buf->count, q->count); } else { prev = list_entry(q->active.prev, struct cx25821_buffer, vb.queue); if (prev->vb.width == buf->vb.width && prev->vb.height == buf->vb.height && prev->fmt == buf->fmt) { list_add_tail(&buf->vb.queue, &q->active); buf->vb.state = VIDEOBUF_ACTIVE; buf->count = q->count++; prev->risc.jmp[1] = cpu_to_le32(buf->risc.dma); /* 64 bit bits 63-32 */ prev->risc.jmp[2] = cpu_to_le32(0); dprintk(2, "[%p/%d] buffer_queue - append to active, buf->count=%d\n", buf, buf->vb.i, buf->count); } else { list_add_tail(&buf->vb.queue, &q->queued); buf->vb.state = VIDEOBUF_QUEUED; dprintk(2, "[%p/%d] buffer_queue - first queued\n", buf, buf->vb.i); } } if (list_empty(&q->active)) dprintk(2, "active queue empty!\n"); } static struct videobuf_queue_ops cx25821_video_qops = { .buf_setup = cx25821_buffer_setup, .buf_prepare = cx25821_buffer_prepare, .buf_queue = buffer_queue, .buf_release = cx25821_buffer_release, }; static int video_open(struct file *file) { struct video_device *vdev = video_devdata(file); struct cx25821_dev *dev = video_drvdata(file); struct cx25821_fh *fh; enum v4l2_buf_type type = V4L2_BUF_TYPE_VIDEO_CAPTURE; u32 pix_format; int ch_id; dprintk(1, "open dev=%s type=%s\n", video_device_node_name(vdev), v4l2_type_names[type]); for (ch_id = 0; ch_id < MAX_VID_CHANNEL_NUM - 1; ch_id++) if (dev->channels[ch_id].video_dev == vdev) break; /* Can't happen */ if (ch_id >= MAX_VID_CHANNEL_NUM - 1) return -ENODEV; /* allocate + initialize per filehandle data */ fh = kzalloc(sizeof(*fh), GFP_KERNEL); if (NULL == fh) return -ENOMEM; file->private_data = fh; fh->dev = dev; fh->type = type; fh->width = 720; fh->channel_id = ch_id; if (dev->tvnorm & V4L2_STD_PAL_BG || dev->tvnorm & V4L2_STD_PAL_DK) fh->height = 576; else fh->height = 480; dev->channel_opened = fh->channel_id; if (dev->channels[ch_id].pixel_formats == PIXEL_FRMT_411) pix_format = V4L2_PIX_FMT_Y41P; else pix_format = V4L2_PIX_FMT_YUYV; fh->fmt = cx25821_format_by_fourcc(pix_format); v4l2_prio_open(&dev->channels[ch_id].prio, &fh->prio); videobuf_queue_sg_init(&fh->vidq, &cx25821_video_qops, &dev->pci->dev, &dev->slock, V4L2_BUF_TYPE_VIDEO_CAPTURE, V4L2_FIELD_INTERLACED, sizeof(struct cx25821_buffer), fh, NULL); dprintk(1, "post videobuf_queue_init()\n"); return 0; } static ssize_t video_read(struct file *file, char __user * data, size_t count, loff_t *ppos) { struct cx25821_fh *fh = file->private_data; switch (fh->type) { case V4L2_BUF_TYPE_VIDEO_CAPTURE: if (cx25821_res_locked(fh, RESOURCE_VIDEO0)) return -EBUSY; return videobuf_read_one(&fh->vidq, data, count, ppos, file->f_flags & O_NONBLOCK); default: BUG(); return 0; } } static unsigned int video_poll(struct file *file, struct poll_table_struct *wait) { struct cx25821_fh *fh = file->private_data; struct cx25821_buffer *buf; if (cx25821_res_check(fh, RESOURCE_VIDEO0)) { /* streaming capture */ if (list_empty(&fh->vidq.stream)) return POLLERR; buf = list_entry(fh->vidq.stream.next, struct cx25821_buffer, vb.stream); } else { /* read() capture */ buf = (struct cx25821_buffer *)fh->vidq.read_buf; if (NULL == buf) return POLLERR; } poll_wait(file, &buf->vb.done, wait); if (buf->vb.state == VIDEOBUF_DONE || buf->vb.state == VIDEOBUF_ERROR) { if (buf->vb.state == VIDEOBUF_DONE) { struct cx25821_dev *dev = fh->dev; if (dev && dev->channels[fh->channel_id] .use_cif_resolution) { u8 cam_id = *((char *)buf->vb.baddr + 3); memcpy((char *)buf->vb.baddr, (char *)buf->vb.baddr + (fh->width * 2), (fh->width * 2)); *((char *)buf->vb.baddr + 3) = cam_id; } } return POLLIN | POLLRDNORM; } return 0; } static int video_release(struct file *file) { struct cx25821_fh *fh = file->private_data; struct cx25821_dev *dev = fh->dev; const struct sram_channel *sram_ch = dev->channels[0].sram_channels; /* stop the risc engine and fifo */ cx_write(sram_ch->dma_ctl, 0); /* FIFO and RISC disable */ /* stop video capture */ if (cx25821_res_check(fh, RESOURCE_VIDEO0)) { videobuf_queue_cancel(&fh->vidq); cx25821_res_free(dev, fh, RESOURCE_VIDEO0); } if (fh->vidq.read_buf) { cx25821_buffer_release(&fh->vidq, fh->vidq.read_buf); kfree(fh->vidq.read_buf); } videobuf_mmap_free(&fh->vidq); v4l2_prio_close(&dev->channels[fh->channel_id].prio, fh->prio); file->private_data = NULL; kfree(fh); return 0; } /* VIDEO IOCTLS */ static int cx25821_vidioc_g_fmt_vid_cap(struct file *file, void *priv, struct v4l2_format *f) { struct cx25821_fh *fh = priv; f->fmt.pix.width = fh->width; f->fmt.pix.height = fh->height; f->fmt.pix.field = fh->vidq.field; f->fmt.pix.pixelformat = fh->fmt->fourcc; f->fmt.pix.bytesperline = (f->fmt.pix.width * fh->fmt->depth) >> 3; f->fmt.pix.sizeimage = f->fmt.pix.height * f->fmt.pix.bytesperline; return 0; } static int cx25821_vidioc_try_fmt_vid_cap(struct file *file, void *priv, struct v4l2_format *f) { const struct cx25821_fmt *fmt; enum v4l2_field field; unsigned int maxw, maxh; fmt = cx25821_format_by_fourcc(f->fmt.pix.pixelformat); if (NULL == fmt) return -EINVAL; field = f->fmt.pix.field; maxw = 720; maxh = 576; if (V4L2_FIELD_ANY == field) { if (f->fmt.pix.height > maxh / 2) field = V4L2_FIELD_INTERLACED; else field = V4L2_FIELD_TOP; } switch (field) { case V4L2_FIELD_TOP: case V4L2_FIELD_BOTTOM: maxh = maxh / 2; break; case V4L2_FIELD_INTERLACED: break; default: return -EINVAL; } f->fmt.pix.field = field; if (f->fmt.pix.height < 32) f->fmt.pix.height = 32; if (f->fmt.pix.height > maxh) f->fmt.pix.height = maxh; if (f->fmt.pix.width < 48) f->fmt.pix.width = 48; if (f->fmt.pix.width > maxw) f->fmt.pix.width = maxw; f->fmt.pix.width &= ~0x03; f->fmt.pix.bytesperline = (f->fmt.pix.width * fmt->depth) >> 3; f->fmt.pix.sizeimage = f->fmt.pix.height * f->fmt.pix.bytesperline; return 0; } static int vidioc_streamon(struct file *file, void *priv, enum v4l2_buf_type i) { struct cx25821_fh *fh = priv; struct cx25821_dev *dev = fh->dev; if (unlikely(fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)) return -EINVAL; if (unlikely(i != fh->type)) return -EINVAL; if (unlikely(!cx25821_res_get(dev, fh, cx25821_get_resource(fh, RESOURCE_VIDEO0)))) return -EBUSY; return videobuf_streamon(get_queue(fh)); } static int vidioc_streamoff(struct file *file, void *priv, enum v4l2_buf_type i) { struct cx25821_fh *fh = priv; struct cx25821_dev *dev = fh->dev; int err, res; if (fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) return -EINVAL; if (i != fh->type) return -EINVAL; res = cx25821_get_resource(fh, RESOURCE_VIDEO0); err = videobuf_streamoff(get_queue(fh)); if (err < 0) return err; cx25821_res_free(dev, fh, res); return 0; } static int cx25821_is_valid_width(u32 width, v4l2_std_id tvnorm) { if (tvnorm == V4L2_STD_PAL_BG) { if (width == 352 || width == 720) return 1; else return 0; } if (tvnorm == V4L2_STD_NTSC_M) { if (width == 320 || width == 352 || width == 720) return 1; else return 0; } return 0; } static int cx25821_is_valid_height(u32 height, v4l2_std_id tvnorm) { if (tvnorm == V4L2_STD_PAL_BG) { if (height == 576 || height == 288) return 1; else return 0; } if (tvnorm == V4L2_STD_NTSC_M) { if (height == 480 || height == 240) return 1; else return 0; } return 0; } static int vidioc_s_fmt_vid_cap(struct file *file, void *priv, struct v4l2_format *f) { struct cx25821_fh *fh = priv; struct cx25821_dev *dev = ((struct cx25821_fh *)priv)->dev; struct v4l2_mbus_framefmt mbus_fmt; int err; int pix_format = PIXEL_FRMT_422; if (fh) { err = v4l2_prio_check(&dev->channels[fh->channel_id].prio, fh->prio); if (0 != err) return err; } dprintk(2, "%s()\n", __func__); err = cx25821_vidioc_try_fmt_vid_cap(file, priv, f); if (0 != err) return err; fh->fmt = cx25821_format_by_fourcc(f->fmt.pix.pixelformat); fh->vidq.field = f->fmt.pix.field; /* check if width and height is valid based on set standard */ if (cx25821_is_valid_width(f->fmt.pix.width, dev->tvnorm)) fh->width = f->fmt.pix.width; if (cx25821_is_valid_height(f->fmt.pix.height, dev->tvnorm)) fh->height = f->fmt.pix.height; if (f->fmt.pix.pixelformat == V4L2_PIX_FMT_Y41P) pix_format = PIXEL_FRMT_411; else if (f->fmt.pix.pixelformat == V4L2_PIX_FMT_YUYV) pix_format = PIXEL_FRMT_422; else return -EINVAL; cx25821_set_pixel_format(dev, SRAM_CH00, pix_format); /* check if cif resolution */ if (fh->width == 320 || fh->width == 352) dev->channels[fh->channel_id].use_cif_resolution = 1; else dev->channels[fh->channel_id].use_cif_resolution = 0; dev->channels[fh->channel_id].cif_width = fh->width; medusa_set_resolution(dev, fh->width, SRAM_CH00); dprintk(2, "%s(): width=%d height=%d field=%d\n", __func__, fh->width, fh->height, fh->vidq.field); v4l2_fill_mbus_format(&mbus_fmt, &f->fmt.pix, V4L2_MBUS_FMT_FIXED); cx25821_call_all(dev, video, s_mbus_fmt, &mbus_fmt); return 0; } static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *p) { int ret_val = 0; struct cx25821_fh *fh = priv; struct cx25821_dev *dev = ((struct cx25821_fh *)priv)->dev; ret_val = videobuf_dqbuf(get_queue(fh), p, file->f_flags & O_NONBLOCK); p->sequence = dev->channels[fh->channel_id].vidq.count; return ret_val; } static int vidioc_log_status(struct file *file, void *priv) { struct cx25821_dev *dev = ((struct cx25821_fh *)priv)->dev; struct cx25821_fh *fh = priv; const struct sram_channel *sram_ch = dev->channels[fh->channel_id].sram_channels; u32 tmp = 0; cx25821_call_all(dev, core, log_status); tmp = cx_read(sram_ch->dma_ctl); pr_info("Video input 0 is %s\n", (tmp & 0x11) ? "streaming" : "stopped"); return 0; } static int cx25821_vidioc_querycap(struct file *file, void *priv, struct v4l2_capability *cap) { struct cx25821_dev *dev = ((struct cx25821_fh *)priv)->dev; struct cx25821_fh *fh = priv; const u32 cap_input = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_READWRITE | V4L2_CAP_STREAMING; const u32 cap_output = V4L2_CAP_VIDEO_OUTPUT; strcpy(cap->driver, "cx25821"); strlcpy(cap->card, cx25821_boards[dev->board].name, sizeof(cap->card)); sprintf(cap->bus_info, "PCIe:%s", pci_name(dev->pci)); if (fh->channel_id >= VID_CHANNEL_NUM) cap->device_caps = cap_output; else cap->device_caps = cap_input; cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS; return 0; } static int cx25821_vidioc_enum_fmt_vid_cap(struct file *file, void *priv, struct v4l2_fmtdesc *f) { if (unlikely(f->index >= ARRAY_SIZE(formats))) return -EINVAL; strlcpy(f->description, formats[f->index].name, sizeof(f->description)); f->pixelformat = formats[f->index].fourcc; return 0; } static int cx25821_vidioc_reqbufs(struct file *file, void *priv, struct v4l2_requestbuffers *p) { struct cx25821_fh *fh = priv; return videobuf_reqbufs(get_queue(fh), p); } static int cx25821_vidioc_querybuf(struct file *file, void *priv, struct v4l2_buffer *p) { struct cx25821_fh *fh = priv; return videobuf_querybuf(get_queue(fh), p); } static int cx25821_vidioc_qbuf(struct file *file, void *priv, struct v4l2_buffer *p) { struct cx25821_fh *fh = priv; return videobuf_qbuf(get_queue(fh), p); } static int cx25821_vidioc_g_priority(struct file *file, void *f, enum v4l2_priority *p) { struct cx25821_dev *dev = ((struct cx25821_fh *)f)->dev; struct cx25821_fh *fh = f; *p = v4l2_prio_max(&dev->channels[fh->channel_id].prio); return 0; } static int cx25821_vidioc_s_priority(struct file *file, void *f, enum v4l2_priority prio) { struct cx25821_fh *fh = f; struct cx25821_dev *dev = ((struct cx25821_fh *)f)->dev; return v4l2_prio_change(&dev->channels[fh->channel_id].prio, &fh->prio, prio); } static int cx25821_vidioc_g_std(struct file *file, void *priv, v4l2_std_id *tvnorms) { struct cx25821_dev *dev = ((struct cx25821_fh *)priv)->dev; *tvnorms = dev->tvnorm; return 0; } int cx25821_vidioc_s_std(struct file *file, void *priv, v4l2_std_id tvnorms) { struct cx25821_fh *fh = priv; struct cx25821_dev *dev = ((struct cx25821_fh *)priv)->dev; int err; dprintk(1, "%s()\n", __func__); if (fh) { err = v4l2_prio_check(&dev->channels[fh->channel_id].prio, fh->prio); if (0 != err) return err; } if (dev->tvnorm == tvnorms) return 0; mutex_lock(&dev->lock); cx25821_set_tvnorm(dev, tvnorms); mutex_unlock(&dev->lock); medusa_set_videostandard(dev); return 0; } static int cx25821_vidioc_enum_input(struct file *file, void *priv, struct v4l2_input *i) { static const char * const iname[] = { [CX25821_VMUX_COMPOSITE] = "Composite", [CX25821_VMUX_SVIDEO] = "S-Video", [CX25821_VMUX_DEBUG] = "for debug only", }; struct cx25821_dev *dev = ((struct cx25821_fh *)priv)->dev; unsigned int n; dprintk(1, "%s()\n", __func__); n = i->index; if (n >= CX25821_NR_INPUT) return -EINVAL; if (0 == INPUT(n)->type) return -EINVAL; i->type = V4L2_INPUT_TYPE_CAMERA; strcpy(i->name, iname[INPUT(n)->type]); i->std = CX25821_NORMS; return 0; } static int cx25821_vidioc_g_input(struct file *file, void *priv, unsigned int *i) { struct cx25821_dev *dev = ((struct cx25821_fh *)priv)->dev; *i = dev->input; dprintk(1, "%s(): returns %d\n", __func__, *i); return 0; } static int cx25821_vidioc_s_input(struct file *file, void *priv, unsigned int i) { struct cx25821_fh *fh = priv; struct cx25821_dev *dev = ((struct cx25821_fh *)priv)->dev; int err; dprintk(1, "%s(%d)\n", __func__, i); if (fh) { err = v4l2_prio_check(&dev->channels[fh->channel_id].prio, fh->prio); if (0 != err) return err; } if (i >= CX25821_NR_INPUT || INPUT(i)->type == 0) return -EINVAL; mutex_lock(&dev->lock); cx25821_video_mux(dev, i); mutex_unlock(&dev->lock); return 0; } #ifdef CONFIG_VIDEO_ADV_DEBUG int cx25821_vidioc_g_register(struct file *file, void *fh, struct v4l2_dbg_register *reg) { struct cx25821_dev *dev = ((struct cx25821_fh *)fh)->dev; if (!v4l2_chip_match_host(®->match)) return -EINVAL; cx25821_call_all(dev, core, g_register, reg); return 0; } int cx25821_vidioc_s_register(struct file *file, void *fh, const struct v4l2_dbg_register *reg) { struct cx25821_dev *dev = ((struct cx25821_fh *)fh)->dev; if (!v4l2_chip_match_host(®->match)) return -EINVAL; cx25821_call_all(dev, core, s_register, reg); return 0; } #endif /*****************************************************************************/ static const struct v4l2_queryctrl no_ctl = { .name = "42", .flags = V4L2_CTRL_FLAG_DISABLED, }; static struct v4l2_queryctrl cx25821_ctls[] = { /* --- video --- */ { .id = V4L2_CID_BRIGHTNESS, .name = "Brightness", .minimum = 0, .maximum = 10000, .step = 1, .default_value = 6200, .type = V4L2_CTRL_TYPE_INTEGER, }, { .id = V4L2_CID_CONTRAST, .name = "Contrast", .minimum = 0, .maximum = 10000, .step = 1, .default_value = 5000, .type = V4L2_CTRL_TYPE_INTEGER, }, { .id = V4L2_CID_SATURATION, .name = "Saturation", .minimum = 0, .maximum = 10000, .step = 1, .default_value = 5000, .type = V4L2_CTRL_TYPE_INTEGER, }, { .id = V4L2_CID_HUE, .name = "Hue", .minimum = 0, .maximum = 10000, .step = 1, .default_value = 5000, .type = V4L2_CTRL_TYPE_INTEGER, } }; static const int CX25821_CTLS = ARRAY_SIZE(cx25821_ctls); static int cx25821_ctrl_query(struct v4l2_queryctrl *qctrl) { int i; if (qctrl->id < V4L2_CID_BASE || qctrl->id >= V4L2_CID_LASTP1) return -EINVAL; for (i = 0; i < CX25821_CTLS; i++) if (cx25821_ctls[i].id == qctrl->id) break; if (i == CX25821_CTLS) { *qctrl = no_ctl; return 0; } *qctrl = cx25821_ctls[i]; return 0; } static int cx25821_vidioc_queryctrl(struct file *file, void *priv, struct v4l2_queryctrl *qctrl) { return cx25821_ctrl_query(qctrl); } /* ------------------------------------------------------------------ */ /* VIDEO CTRL IOCTLS */ static const struct v4l2_queryctrl *ctrl_by_id(unsigned int id) { unsigned int i; for (i = 0; i < CX25821_CTLS; i++) if (cx25821_ctls[i].id == id) return cx25821_ctls + i; return NULL; } static int cx25821_vidioc_g_ctrl(struct file *file, void *priv, struct v4l2_control *ctl) { struct cx25821_dev *dev = ((struct cx25821_fh *)priv)->dev; struct cx25821_fh *fh = priv; const struct v4l2_queryctrl *ctrl; ctrl = ctrl_by_id(ctl->id); if (NULL == ctrl) return -EINVAL; switch (ctl->id) { case V4L2_CID_BRIGHTNESS: ctl->value = dev->channels[fh->channel_id].ctl_bright; break; case V4L2_CID_HUE: ctl->value = dev->channels[fh->channel_id].ctl_hue; break; case V4L2_CID_CONTRAST: ctl->value = dev->channels[fh->channel_id].ctl_contrast; break; case V4L2_CID_SATURATION: ctl->value = dev->channels[fh->channel_id].ctl_saturation; break; } return 0; } static int cx25821_set_control(struct cx25821_dev *dev, struct v4l2_control *ctl, int chan_num) { int err; const struct v4l2_queryctrl *ctrl; err = -EINVAL; ctrl = ctrl_by_id(ctl->id); if (NULL == ctrl) return err; switch (ctrl->type) { case V4L2_CTRL_TYPE_BOOLEAN: case V4L2_CTRL_TYPE_MENU: case V4L2_CTRL_TYPE_INTEGER: if (ctl->value < ctrl->minimum) ctl->value = ctrl->minimum; if (ctl->value > ctrl->maximum) ctl->value = ctrl->maximum; break; default: /* nothing */ ; } switch (ctl->id) { case V4L2_CID_BRIGHTNESS: dev->channels[chan_num].ctl_bright = ctl->value; medusa_set_brightness(dev, ctl->value, chan_num); break; case V4L2_CID_HUE: dev->channels[chan_num].ctl_hue = ctl->value; medusa_set_hue(dev, ctl->value, chan_num); break; case V4L2_CID_CONTRAST: dev->channels[chan_num].ctl_contrast = ctl->value; medusa_set_contrast(dev, ctl->value, chan_num); break; case V4L2_CID_SATURATION: dev->channels[chan_num].ctl_saturation = ctl->value; medusa_set_saturation(dev, ctl->value, chan_num); break; } err = 0; return err; } static int vidioc_s_ctrl(struct file *file, void *priv, struct v4l2_control *ctl) { struct cx25821_fh *fh = priv; struct cx25821_dev *dev = ((struct cx25821_fh *)priv)->dev; int err; if (fh) { err = v4l2_prio_check(&dev->channels[fh->channel_id].prio, fh->prio); if (0 != err) return err; } return cx25821_set_control(dev, ctl, fh->channel_id); } static void cx25821_init_controls(struct cx25821_dev *dev, int chan_num) { struct v4l2_control ctrl; int i; for (i = 0; i < CX25821_CTLS; i++) { ctrl.id = cx25821_ctls[i].id; ctrl.value = cx25821_ctls[i].default_value; cx25821_set_control(dev, &ctrl, chan_num); } } static long video_ioctl_upstream9(struct file *file, unsigned int cmd, unsigned long arg) { struct cx25821_fh *fh = file->private_data; struct cx25821_dev *dev = fh->dev; int command = 0; struct upstream_user_struct *data_from_user; data_from_user = (struct upstream_user_struct *)arg; if (!data_from_user) { pr_err("%s(): Upstream data is INVALID. Returning\n", __func__); return 0; } command = data_from_user->command; if (command != UPSTREAM_START_VIDEO && command != UPSTREAM_STOP_VIDEO) return 0; dev->input_filename = data_from_user->input_filename; dev->input_audiofilename = data_from_user->input_filename; dev->vid_stdname = data_from_user->vid_stdname; dev->pixel_format = data_from_user->pixel_format; dev->channel_select = data_from_user->channel_select; dev->command = data_from_user->command; switch (command) { case UPSTREAM_START_VIDEO: cx25821_start_upstream_video_ch1(dev, data_from_user); break; case UPSTREAM_STOP_VIDEO: cx25821_stop_upstream_video_ch1(dev); break; } return 0; } static long video_ioctl_upstream10(struct file *file, unsigned int cmd, unsigned long arg) { struct cx25821_fh *fh = file->private_data; struct cx25821_dev *dev = fh->dev; int command = 0; struct upstream_user_struct *data_from_user; data_from_user = (struct upstream_user_struct *)arg; if (!data_from_user) { pr_err("%s(): Upstream data is INVALID. Returning\n", __func__); return 0; } command = data_from_user->command; if (command != UPSTREAM_START_VIDEO && command != UPSTREAM_STOP_VIDEO) return 0; dev->input_filename_ch2 = data_from_user->input_filename; dev->input_audiofilename = data_from_user->input_filename; dev->vid_stdname_ch2 = data_from_user->vid_stdname; dev->pixel_format_ch2 = data_from_user->pixel_format; dev->channel_select_ch2 = data_from_user->channel_select; dev->command_ch2 = data_from_user->command; switch (command) { case UPSTREAM_START_VIDEO: cx25821_start_upstream_video_ch2(dev, data_from_user); break; case UPSTREAM_STOP_VIDEO: cx25821_stop_upstream_video_ch2(dev); break; } return 0; } static long video_ioctl_upstream11(struct file *file, unsigned int cmd, unsigned long arg) { struct cx25821_fh *fh = file->private_data; struct cx25821_dev *dev = fh->dev; int command = 0; struct upstream_user_struct *data_from_user; data_from_user = (struct upstream_user_struct *)arg; if (!data_from_user) { pr_err("%s(): Upstream data is INVALID. Returning\n", __func__); return 0; } command = data_from_user->command; if (command != UPSTREAM_START_AUDIO && command != UPSTREAM_STOP_AUDIO) return 0; dev->input_filename = data_from_user->input_filename; dev->input_audiofilename = data_from_user->input_filename; dev->vid_stdname = data_from_user->vid_stdname; dev->pixel_format = data_from_user->pixel_format; dev->channel_select = data_from_user->channel_select; dev->command = data_from_user->command; switch (command) { case UPSTREAM_START_AUDIO: cx25821_start_upstream_audio(dev, data_from_user); break; case UPSTREAM_STOP_AUDIO: cx25821_stop_upstream_audio(dev); break; } return 0; } static long video_ioctl_set(struct file *file, unsigned int cmd, unsigned long arg) { struct cx25821_fh *fh = file->private_data; struct cx25821_dev *dev = fh->dev; struct downstream_user_struct *data_from_user; int command; int width = 720; int selected_channel = 0; int pix_format = 0; int i = 0; int cif_enable = 0; int cif_width = 0; data_from_user = (struct downstream_user_struct *)arg; if (!data_from_user) { pr_err("%s(): User data is INVALID. Returning\n", __func__); return 0; } command = data_from_user->command; if (command != SET_VIDEO_STD && command != SET_PIXEL_FORMAT && command != ENABLE_CIF_RESOLUTION && command != REG_READ && command != REG_WRITE && command != MEDUSA_READ && command != MEDUSA_WRITE) { return 0; } switch (command) { case SET_VIDEO_STD: if (!strcmp(data_from_user->vid_stdname, "PAL")) dev->tvnorm = V4L2_STD_PAL_BG; else dev->tvnorm = V4L2_STD_NTSC_M; medusa_set_videostandard(dev); break; case SET_PIXEL_FORMAT: selected_channel = data_from_user->decoder_select; pix_format = data_from_user->pixel_format; if (!(selected_channel <= 7 && selected_channel >= 0)) { selected_channel -= 4; selected_channel = selected_channel % 8; } if (selected_channel >= 0) cx25821_set_pixel_format(dev, selected_channel, pix_format); break; case ENABLE_CIF_RESOLUTION: selected_channel = data_from_user->decoder_select; cif_enable = data_from_user->cif_resolution_enable; cif_width = data_from_user->cif_width; if (cif_enable) { if (dev->tvnorm & V4L2_STD_PAL_BG || dev->tvnorm & V4L2_STD_PAL_DK) { width = 352; } else { width = cif_width; if (cif_width != 320 && cif_width != 352) width = 320; } } if (!(selected_channel <= 7 && selected_channel >= 0)) { selected_channel -= 4; selected_channel = selected_channel % 8; } if (selected_channel <= 7 && selected_channel >= 0) { dev->channels[selected_channel].use_cif_resolution = cif_enable; dev->channels[selected_channel].cif_width = width; } else { for (i = 0; i < VID_CHANNEL_NUM; i++) { dev->channels[i].use_cif_resolution = cif_enable; dev->channels[i].cif_width = width; } } medusa_set_resolution(dev, width, selected_channel); break; case REG_READ: data_from_user->reg_data = cx_read(data_from_user->reg_address); break; case REG_WRITE: cx_write(data_from_user->reg_address, data_from_user->reg_data); break; case MEDUSA_READ: cx25821_i2c_read(&dev->i2c_bus[0], (u16) data_from_user->reg_address, &data_from_user->reg_data); break; case MEDUSA_WRITE: cx25821_i2c_write(&dev->i2c_bus[0], (u16) data_from_user->reg_address, data_from_user->reg_data); break; } return 0; } static long cx25821_video_ioctl(struct file *file, unsigned int cmd, unsigned long arg) { int ret = 0; struct cx25821_fh *fh = file->private_data; /* check to see if it's the video upstream */ if (fh->channel_id == SRAM_CH09) { ret = video_ioctl_upstream9(file, cmd, arg); return ret; } else if (fh->channel_id == SRAM_CH10) { ret = video_ioctl_upstream10(file, cmd, arg); return ret; } else if (fh->channel_id == SRAM_CH11) { ret = video_ioctl_upstream11(file, cmd, arg); ret = video_ioctl_set(file, cmd, arg); return ret; } return video_ioctl2(file, cmd, arg); } /* exported stuff */ static const struct v4l2_file_operations video_fops = { .owner = THIS_MODULE, .open = video_open, .release = video_release, .read = video_read, .poll = video_poll, .mmap = cx25821_video_mmap, .ioctl = cx25821_video_ioctl, }; static const struct v4l2_ioctl_ops video_ioctl_ops = { .vidioc_querycap = cx25821_vidioc_querycap, .vidioc_enum_fmt_vid_cap = cx25821_vidioc_enum_fmt_vid_cap, .vidioc_g_fmt_vid_cap = cx25821_vidioc_g_fmt_vid_cap, .vidioc_try_fmt_vid_cap = cx25821_vidioc_try_fmt_vid_cap, .vidioc_s_fmt_vid_cap = vidioc_s_fmt_vid_cap, .vidioc_reqbufs = cx25821_vidioc_reqbufs, .vidioc_querybuf = cx25821_vidioc_querybuf, .vidioc_qbuf = cx25821_vidioc_qbuf, .vidioc_dqbuf = vidioc_dqbuf, .vidioc_g_std = cx25821_vidioc_g_std, .vidioc_s_std = cx25821_vidioc_s_std, .vidioc_enum_input = cx25821_vidioc_enum_input, .vidioc_g_input = cx25821_vidioc_g_input, .vidioc_s_input = cx25821_vidioc_s_input, .vidioc_g_ctrl = cx25821_vidioc_g_ctrl, .vidioc_s_ctrl = vidioc_s_ctrl, .vidioc_queryctrl = cx25821_vidioc_queryctrl, .vidioc_streamon = vidioc_streamon, .vidioc_streamoff = vidioc_streamoff, .vidioc_log_status = vidioc_log_status, .vidioc_g_priority = cx25821_vidioc_g_priority, .vidioc_s_priority = cx25821_vidioc_s_priority, #ifdef CONFIG_VIDEO_ADV_DEBUG .vidioc_g_register = cx25821_vidioc_g_register, .vidioc_s_register = cx25821_vidioc_s_register, #endif }; static const struct video_device cx25821_video_device = { .name = "cx25821-video", .fops = &video_fops, .minor = -1, .ioctl_ops = &video_ioctl_ops, .tvnorms = CX25821_NORMS, }; void cx25821_video_unregister(struct cx25821_dev *dev, int chan_num) { cx_clear(PCI_INT_MSK, 1); if (dev->channels[chan_num].video_dev) { if (video_is_registered(dev->channels[chan_num].video_dev)) video_unregister_device( dev->channels[chan_num].video_dev); else video_device_release( dev->channels[chan_num].video_dev); dev->channels[chan_num].video_dev = NULL; btcx_riscmem_free(dev->pci, &dev->channels[chan_num].vidq.stopper); pr_warn("device %d released!\n", chan_num); } } int cx25821_video_register(struct cx25821_dev *dev) { int err; int i; spin_lock_init(&dev->slock); for (i = 0; i < VID_CHANNEL_NUM; ++i) { if (i == SRAM_CH08) /* audio channel */ continue; cx25821_init_controls(dev, i); cx25821_risc_stopper(dev->pci, &dev->channels[i].vidq.stopper, dev->channels[i].sram_channels->dma_ctl, 0x11, 0); dev->channels[i].sram_channels = &cx25821_sram_channels[i]; dev->channels[i].video_dev = NULL; dev->channels[i].resources = 0; cx_write(dev->channels[i].sram_channels->int_stat, 0xffffffff); INIT_LIST_HEAD(&dev->channels[i].vidq.active); INIT_LIST_HEAD(&dev->channels[i].vidq.queued); dev->channels[i].timeout_data.dev = dev; dev->channels[i].timeout_data.channel = &cx25821_sram_channels[i]; dev->channels[i].vidq.timeout.function = cx25821_vid_timeout; dev->channels[i].vidq.timeout.data = (unsigned long)&dev->channels[i].timeout_data; init_timer(&dev->channels[i].vidq.timeout); /* register v4l devices */ dev->channels[i].video_dev = cx25821_vdev_init(dev, dev->pci, &cx25821_video_device, "video"); err = video_register_device(dev->channels[i].video_dev, VFL_TYPE_GRABBER, video_nr[dev->nr]); if (err < 0) goto fail_unreg; } /* set PCI interrupt */ cx_set(PCI_INT_MSK, 0xff); /* initial device configuration */ mutex_lock(&dev->lock); dev->tvnorm = V4L2_STD_NTSC_M, cx25821_set_tvnorm(dev, dev->tvnorm); mutex_unlock(&dev->lock); return 0; fail_unreg: cx25821_video_unregister(dev, i); return err; }