diff options
Diffstat (limited to 'drivers/media/common/saa7146_video.c')
| -rw-r--r-- | drivers/media/common/saa7146_video.c | 1332 |
1 files changed, 0 insertions, 1332 deletions
diff --git a/drivers/media/common/saa7146_video.c b/drivers/media/common/saa7146_video.c deleted file mode 100644 index 6d14785d4747..000000000000 --- a/drivers/media/common/saa7146_video.c +++ /dev/null @@ -1,1332 +0,0 @@ -#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt - -#include <media/saa7146_vv.h> -#include <media/v4l2-chip-ident.h> -#include <media/v4l2-event.h> -#include <media/v4l2-ctrls.h> -#include <linux/module.h> - -static int max_memory = 32; - -module_param(max_memory, int, 0644); -MODULE_PARM_DESC(max_memory, "maximum memory usage for capture buffers (default: 32Mb)"); - -#define IS_CAPTURE_ACTIVE(fh) \ - (((vv->video_status & STATUS_CAPTURE) != 0) && (vv->video_fh == fh)) - -#define IS_OVERLAY_ACTIVE(fh) \ - (((vv->video_status & STATUS_OVERLAY) != 0) && (vv->video_fh == fh)) - -/* format descriptions for capture and preview */ -static struct saa7146_format formats[] = { - { - .name = "RGB-8 (3-3-2)", - .pixelformat = V4L2_PIX_FMT_RGB332, - .trans = RGB08_COMPOSED, - .depth = 8, - .flags = 0, - }, { - .name = "RGB-16 (5/B-6/G-5/R)", - .pixelformat = V4L2_PIX_FMT_RGB565, - .trans = RGB16_COMPOSED, - .depth = 16, - .flags = 0, - }, { - .name = "RGB-24 (B-G-R)", - .pixelformat = V4L2_PIX_FMT_BGR24, - .trans = RGB24_COMPOSED, - .depth = 24, - .flags = 0, - }, { - .name = "RGB-32 (B-G-R)", - .pixelformat = V4L2_PIX_FMT_BGR32, - .trans = RGB32_COMPOSED, - .depth = 32, - .flags = 0, - }, { - .name = "RGB-32 (R-G-B)", - .pixelformat = V4L2_PIX_FMT_RGB32, - .trans = RGB32_COMPOSED, - .depth = 32, - .flags = 0, - .swap = 0x2, - }, { - .name = "Greyscale-8", - .pixelformat = V4L2_PIX_FMT_GREY, - .trans = Y8, - .depth = 8, - .flags = 0, - }, { - .name = "YUV 4:2:2 planar (Y-Cb-Cr)", - .pixelformat = V4L2_PIX_FMT_YUV422P, - .trans = YUV422_DECOMPOSED, - .depth = 16, - .flags = FORMAT_BYTE_SWAP|FORMAT_IS_PLANAR, - }, { - .name = "YVU 4:2:0 planar (Y-Cb-Cr)", - .pixelformat = V4L2_PIX_FMT_YVU420, - .trans = YUV420_DECOMPOSED, - .depth = 12, - .flags = FORMAT_BYTE_SWAP|FORMAT_IS_PLANAR, - }, { - .name = "YUV 4:2:0 planar (Y-Cb-Cr)", - .pixelformat = V4L2_PIX_FMT_YUV420, - .trans = YUV420_DECOMPOSED, - .depth = 12, - .flags = FORMAT_IS_PLANAR, - }, { - .name = "YUV 4:2:2 (U-Y-V-Y)", - .pixelformat = V4L2_PIX_FMT_UYVY, - .trans = YUV422_COMPOSED, - .depth = 16, - .flags = 0, - } -}; - -/* unfortunately, the saa7146 contains a bug which prevents it from doing on-the-fly byte swaps. - due to this, it's impossible to provide additional *packed* formats, which are simply byte swapped - (like V4L2_PIX_FMT_YUYV) ... 8-( */ - -static int NUM_FORMATS = sizeof(formats)/sizeof(struct saa7146_format); - -struct saa7146_format* saa7146_format_by_fourcc(struct saa7146_dev *dev, int fourcc) -{ - int i, j = NUM_FORMATS; - - for (i = 0; i < j; i++) { - if (formats[i].pixelformat == fourcc) { - return formats+i; - } - } - - DEB_D("unknown pixelformat:'%4.4s'\n", (char *)&fourcc); - return NULL; -} - -static int vidioc_try_fmt_vid_overlay(struct file *file, void *fh, struct v4l2_format *f); - -int saa7146_start_preview(struct saa7146_fh *fh) -{ - struct saa7146_dev *dev = fh->dev; - struct saa7146_vv *vv = dev->vv_data; - struct v4l2_format fmt; - int ret = 0, err = 0; - - DEB_EE("dev:%p, fh:%p\n", dev, fh); - - /* check if we have overlay information */ - if (vv->ov.fh == NULL) { - DEB_D("no overlay data available. try S_FMT first.\n"); - return -EAGAIN; - } - - /* check if streaming capture is running */ - if (IS_CAPTURE_ACTIVE(fh) != 0) { - DEB_D("streaming capture is active\n"); - return -EBUSY; - } - - /* check if overlay is running */ - if (IS_OVERLAY_ACTIVE(fh) != 0) { - if (vv->video_fh == fh) { - DEB_D("overlay is already active\n"); - return 0; - } - DEB_D("overlay is already active in another open\n"); - return -EBUSY; - } - - if (0 == saa7146_res_get(fh, RESOURCE_DMA1_HPS|RESOURCE_DMA2_CLP)) { - DEB_D("cannot get necessary overlay resources\n"); - return -EBUSY; - } - - fmt.fmt.win = vv->ov.win; - err = vidioc_try_fmt_vid_overlay(NULL, fh, &fmt); - if (0 != err) { - saa7146_res_free(vv->video_fh, RESOURCE_DMA1_HPS|RESOURCE_DMA2_CLP); - return -EBUSY; - } - vv->ov.win = fmt.fmt.win; - - DEB_D("%dx%d+%d+%d %s field=%s\n", - vv->ov.win.w.width, vv->ov.win.w.height, - vv->ov.win.w.left, vv->ov.win.w.top, - vv->ov_fmt->name, v4l2_field_names[vv->ov.win.field]); - - if (0 != (ret = saa7146_enable_overlay(fh))) { - DEB_D("enabling overlay failed: %d\n", ret); - saa7146_res_free(vv->video_fh, RESOURCE_DMA1_HPS|RESOURCE_DMA2_CLP); - return ret; - } - - vv->video_status = STATUS_OVERLAY; - vv->video_fh = fh; - - return 0; -} -EXPORT_SYMBOL_GPL(saa7146_start_preview); - -int saa7146_stop_preview(struct saa7146_fh *fh) -{ - struct saa7146_dev *dev = fh->dev; - struct saa7146_vv *vv = dev->vv_data; - - DEB_EE("dev:%p, fh:%p\n", dev, fh); - - /* check if streaming capture is running */ - if (IS_CAPTURE_ACTIVE(fh) != 0) { - DEB_D("streaming capture is active\n"); - return -EBUSY; - } - - /* check if overlay is running at all */ - if ((vv->video_status & STATUS_OVERLAY) == 0) { - DEB_D("no active overlay\n"); - return 0; - } - - if (vv->video_fh != fh) { - DEB_D("overlay is active, but in another open\n"); - return -EBUSY; - } - - vv->video_status = 0; - vv->video_fh = NULL; - - saa7146_disable_overlay(fh); - - saa7146_res_free(fh, RESOURCE_DMA1_HPS|RESOURCE_DMA2_CLP); - - return 0; -} -EXPORT_SYMBOL_GPL(saa7146_stop_preview); - -/********************************************************************************/ -/* common pagetable functions */ - -static int saa7146_pgtable_build(struct saa7146_dev *dev, struct saa7146_buf *buf) -{ - struct pci_dev *pci = dev->pci; - struct videobuf_dmabuf *dma=videobuf_to_dma(&buf->vb); - struct scatterlist *list = dma->sglist; - int length = dma->sglen; - struct saa7146_format *sfmt = saa7146_format_by_fourcc(dev,buf->fmt->pixelformat); - - DEB_EE("dev:%p, buf:%p, sg_len:%d\n", dev, buf, length); - - if( 0 != IS_PLANAR(sfmt->trans)) { - struct saa7146_pgtable *pt1 = &buf->pt[0]; - struct saa7146_pgtable *pt2 = &buf->pt[1]; - struct saa7146_pgtable *pt3 = &buf->pt[2]; - __le32 *ptr1, *ptr2, *ptr3; - __le32 fill; - - int size = buf->fmt->width*buf->fmt->height; - int i,p,m1,m2,m3,o1,o2; - - switch( sfmt->depth ) { - case 12: { - /* create some offsets inside the page table */ - m1 = ((size+PAGE_SIZE)/PAGE_SIZE)-1; - m2 = ((size+(size/4)+PAGE_SIZE)/PAGE_SIZE)-1; - m3 = ((size+(size/2)+PAGE_SIZE)/PAGE_SIZE)-1; - o1 = size%PAGE_SIZE; - o2 = (size+(size/4))%PAGE_SIZE; - DEB_CAP("size:%d, m1:%d, m2:%d, m3:%d, o1:%d, o2:%d\n", - size, m1, m2, m3, o1, o2); - break; - } - case 16: { - /* create some offsets inside the page table */ - m1 = ((size+PAGE_SIZE)/PAGE_SIZE)-1; - m2 = ((size+(size/2)+PAGE_SIZE)/PAGE_SIZE)-1; - m3 = ((2*size+PAGE_SIZE)/PAGE_SIZE)-1; - o1 = size%PAGE_SIZE; - o2 = (size+(size/2))%PAGE_SIZE; - DEB_CAP("size:%d, m1:%d, m2:%d, m3:%d, o1:%d, o2:%d\n", - size, m1, m2, m3, o1, o2); - break; - } - default: { - return -1; - } - } - - ptr1 = pt1->cpu; - ptr2 = pt2->cpu; - ptr3 = pt3->cpu; - - /* walk all pages, copy all page addresses to ptr1 */ - for (i = 0; i < length; i++, list++) { - for (p = 0; p * 4096 < list->length; p++, ptr1++) { - *ptr1 = cpu_to_le32(sg_dma_address(list) - list->offset); - } - } -/* - ptr1 = pt1->cpu; - for(j=0;j<40;j++) { - printk("ptr1 %d: 0x%08x\n",j,ptr1[j]); - } -*/ - - /* if we have a user buffer, the first page may not be - aligned to a page boundary. */ - pt1->offset = dma->sglist->offset; - pt2->offset = pt1->offset+o1; - pt3->offset = pt1->offset+o2; - - /* create video-dma2 page table */ - ptr1 = pt1->cpu; - for(i = m1; i <= m2 ; i++, ptr2++) { - *ptr2 = ptr1[i]; - } - fill = *(ptr2-1); - for(;i<1024;i++,ptr2++) { - *ptr2 = fill; - } - /* create video-dma3 page table */ - ptr1 = pt1->cpu; - for(i = m2; i <= m3; i++,ptr3++) { - *ptr3 = ptr1[i]; - } - fill = *(ptr3-1); - for(;i<1024;i++,ptr3++) { - *ptr3 = fill; - } - /* finally: finish up video-dma1 page table */ - ptr1 = pt1->cpu+m1; - fill = pt1->cpu[m1]; - for(i=m1;i<1024;i++,ptr1++) { - *ptr1 = fill; - } -/* - ptr1 = pt1->cpu; - ptr2 = pt2->cpu; - ptr3 = pt3->cpu; - for(j=0;j<40;j++) { - printk("ptr1 %d: 0x%08x\n",j,ptr1[j]); - } - for(j=0;j<40;j++) { - printk("ptr2 %d: 0x%08x\n",j,ptr2[j]); - } - for(j=0;j<40;j++) { - printk("ptr3 %d: 0x%08x\n",j,ptr3[j]); - } -*/ - } else { - struct saa7146_pgtable *pt = &buf->pt[0]; - return saa7146_pgtable_build_single(pci, pt, list, length); - } - - return 0; -} - - -/********************************************************************************/ -/* file operations */ - -static int video_begin(struct saa7146_fh *fh) -{ - struct saa7146_dev *dev = fh->dev; - struct saa7146_vv *vv = dev->vv_data; - struct saa7146_format *fmt = NULL; - unsigned int resource; - int ret = 0, err = 0; - - DEB_EE("dev:%p, fh:%p\n", dev, fh); - - if ((vv->video_status & STATUS_CAPTURE) != 0) { - if (vv->video_fh == fh) { - DEB_S("already capturing\n"); - return 0; - } - DEB_S("already capturing in another open\n"); - return -EBUSY; - } - - if ((vv->video_status & STATUS_OVERLAY) != 0) { - DEB_S("warning: suspending overlay video for streaming capture\n"); - vv->ov_suspend = vv->video_fh; - err = saa7146_stop_preview(vv->video_fh); /* side effect: video_status is now 0, video_fh is NULL */ - if (0 != err) { - DEB_D("suspending video failed. aborting\n"); - return err; - } - } - - fmt = saa7146_format_by_fourcc(dev, vv->video_fmt.pixelformat); - /* we need to have a valid format set here */ - BUG_ON(NULL == fmt); - - if (0 != (fmt->flags & FORMAT_IS_PLANAR)) { - resource = RESOURCE_DMA1_HPS|RESOURCE_DMA2_CLP|RESOURCE_DMA3_BRS; - } else { - resource = RESOURCE_DMA1_HPS; - } - - ret = saa7146_res_get(fh, resource); - if (0 == ret) { - DEB_S("cannot get capture resource %d\n", resource); - if (vv->ov_suspend != NULL) { - saa7146_start_preview(vv->ov_suspend); - vv->ov_suspend = NULL; - } - return -EBUSY; - } - - /* clear out beginning of streaming bit (rps register 0)*/ - saa7146_write(dev, MC2, MASK_27 ); - - /* enable rps0 irqs */ - SAA7146_IER_ENABLE(dev, MASK_27); - - vv->video_fh = fh; - vv->video_status = STATUS_CAPTURE; - - return 0; -} - -static int video_end(struct saa7146_fh *fh, struct file *file) -{ - struct saa7146_dev *dev = fh->dev; - struct saa7146_vv *vv = dev->vv_data; - struct saa7146_format *fmt = NULL; - unsigned long flags; - unsigned int resource; - u32 dmas = 0; - DEB_EE("dev:%p, fh:%p\n", dev, fh); - - if ((vv->video_status & STATUS_CAPTURE) != STATUS_CAPTURE) { - DEB_S("not capturing\n"); - return 0; - } - - if (vv->video_fh != fh) { - DEB_S("capturing, but in another open\n"); - return -EBUSY; - } - - fmt = saa7146_format_by_fourcc(dev, vv->video_fmt.pixelformat); - /* we need to have a valid format set here */ - BUG_ON(NULL == fmt); - - if (0 != (fmt->flags & FORMAT_IS_PLANAR)) { - resource = RESOURCE_DMA1_HPS|RESOURCE_DMA2_CLP|RESOURCE_DMA3_BRS; - dmas = MASK_22 | MASK_21 | MASK_20; - } else { - resource = RESOURCE_DMA1_HPS; - dmas = MASK_22; - } - spin_lock_irqsave(&dev->slock,flags); - - /* disable rps0 */ - saa7146_write(dev, MC1, MASK_28); - - /* disable rps0 irqs */ - SAA7146_IER_DISABLE(dev, MASK_27); - - /* shut down all used video dma transfers */ - saa7146_write(dev, MC1, dmas); - - spin_unlock_irqrestore(&dev->slock, flags); - - vv->video_fh = NULL; - vv->video_status = 0; - - saa7146_res_free(fh, resource); - - if (vv->ov_suspend != NULL) { - saa7146_start_preview(vv->ov_suspend); - vv->ov_suspend = NULL; - } - - return 0; -} - -static int vidioc_querycap(struct file *file, void *fh, struct v4l2_capability *cap) -{ - struct video_device *vdev = video_devdata(file); - struct saa7146_dev *dev = ((struct saa7146_fh *)fh)->dev; - - strcpy((char *)cap->driver, "saa7146 v4l2"); - strlcpy((char *)cap->card, dev->ext->name, sizeof(cap->card)); - sprintf((char *)cap->bus_info, "PCI:%s", pci_name(dev->pci)); - cap->device_caps = - V4L2_CAP_VIDEO_CAPTURE | - V4L2_CAP_VIDEO_OVERLAY | - V4L2_CAP_READWRITE | - V4L2_CAP_STREAMING; - cap->device_caps |= dev->ext_vv_data->capabilities; - cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS; - if (vdev->vfl_type == VFL_TYPE_GRABBER) - cap->device_caps &= - ~(V4L2_CAP_VBI_CAPTURE | V4L2_CAP_SLICED_VBI_OUTPUT); - else - cap->device_caps &= - ~(V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_VIDEO_OVERLAY | V4L2_CAP_AUDIO); - return 0; -} - -static int vidioc_g_fbuf(struct file *file, void *fh, struct v4l2_framebuffer *fb) -{ - struct saa7146_dev *dev = ((struct saa7146_fh *)fh)->dev; - struct saa7146_vv *vv = dev->vv_data; - - *fb = vv->ov_fb; - fb->capability = V4L2_FBUF_CAP_LIST_CLIPPING; - fb->flags = V4L2_FBUF_FLAG_PRIMARY; - return 0; -} - -static int vidioc_s_fbuf(struct file *file, void *fh, struct v4l2_framebuffer *fb) -{ - struct saa7146_dev *dev = ((struct saa7146_fh *)fh)->dev; - struct saa7146_vv *vv = dev->vv_data; - struct saa7146_format *fmt; - - DEB_EE("VIDIOC_S_FBUF\n"); - - if (!capable(CAP_SYS_ADMIN) && !capable(CAP_SYS_RAWIO)) - return -EPERM; - - /* check args */ - fmt = saa7146_format_by_fourcc(dev, fb->fmt.pixelformat); - if (NULL == fmt) - return -EINVAL; - - /* planar formats are not allowed for overlay video, clipping and video dma would clash */ - if (fmt->flags & FORMAT_IS_PLANAR) - DEB_S("planar pixelformat '%4.4s' not allowed for overlay\n", - (char *)&fmt->pixelformat); - - /* check if overlay is running */ - if (IS_OVERLAY_ACTIVE(fh) != 0) { - if (vv->video_fh != fh) { - DEB_D("refusing to change framebuffer informations while overlay is active in another open\n"); - return -EBUSY; - } - } - - /* ok, accept it */ - vv->ov_fb = *fb; - vv->ov_fmt = fmt; - - if (vv->ov_fb.fmt.bytesperline < vv->ov_fb.fmt.width) { - vv->ov_fb.fmt.bytesperline = vv->ov_fb.fmt.width * fmt->depth / 8; - DEB_D("setting bytesperline to %d\n", vv->ov_fb.fmt.bytesperline); - } - return 0; -} - -static int vidioc_enum_fmt_vid_cap(struct file *file, void *fh, struct v4l2_fmtdesc *f) -{ - if (f->index >= NUM_FORMATS) - return -EINVAL; - strlcpy((char *)f->description, formats[f->index].name, - sizeof(f->description)); - f->pixelformat = formats[f->index].pixelformat; - return 0; -} - -int saa7146_s_ctrl(struct v4l2_ctrl *ctrl) -{ - struct saa7146_dev *dev = container_of(ctrl->handler, - struct saa7146_dev, ctrl_handler); - struct saa7146_vv *vv = dev->vv_data; - u32 val; - - switch (ctrl->id) { - case V4L2_CID_BRIGHTNESS: - val = saa7146_read(dev, BCS_CTRL); - val &= 0x00ffffff; - val |= (ctrl->val << 24); - saa7146_write(dev, BCS_CTRL, val); - saa7146_write(dev, MC2, MASK_22 | MASK_06); - break; - - case V4L2_CID_CONTRAST: - val = saa7146_read(dev, BCS_CTRL); - val &= 0xff00ffff; - val |= (ctrl->val << 16); - saa7146_write(dev, BCS_CTRL, val); - saa7146_write(dev, MC2, MASK_22 | MASK_06); - break; - - case V4L2_CID_SATURATION: - val = saa7146_read(dev, BCS_CTRL); - val &= 0xffffff00; - val |= (ctrl->val << 0); - saa7146_write(dev, BCS_CTRL, val); - saa7146_write(dev, MC2, MASK_22 | MASK_06); - break; - - case V4L2_CID_HFLIP: - /* fixme: we can support changing VFLIP and HFLIP here... */ - if ((vv->video_status & STATUS_CAPTURE)) - return -EBUSY; - vv->hflip = ctrl->val; - break; - - case V4L2_CID_VFLIP: - if ((vv->video_status & STATUS_CAPTURE)) - return -EBUSY; - vv->vflip = ctrl->val; - break; - - default: - return -EINVAL; - } - - if ((vv->video_status & STATUS_OVERLAY) != 0) { /* CHECK: && (vv->video_fh == fh)) */ - struct saa7146_fh *fh = vv->video_fh; - - saa7146_stop_preview(fh); - saa7146_start_preview(fh); - } - return 0; -} - -static int vidioc_g_parm(struct file *file, void *fh, - struct v4l2_streamparm *parm) -{ - struct saa7146_dev *dev = ((struct saa7146_fh *)fh)->dev; - struct saa7146_vv *vv = dev->vv_data; - - if (parm->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) - return -EINVAL; - parm->parm.capture.readbuffers = 1; - v4l2_video_std_frame_period(vv->standard->id, - &parm->parm.capture.timeperframe); - return 0; -} - -static int vidioc_g_fmt_vid_cap(struct file *file, void *fh, struct v4l2_format *f) -{ - struct saa7146_dev *dev = ((struct saa7146_fh *)fh)->dev; - struct saa7146_vv *vv = dev->vv_data; - - f->fmt.pix = vv->video_fmt; - return 0; -} - -static int vidioc_g_fmt_vid_overlay(struct file *file, void *fh, struct v4l2_format *f) -{ - struct saa7146_dev *dev = ((struct saa7146_fh *)fh)->dev; - struct saa7146_vv *vv = dev->vv_data; - - f->fmt.win = vv->ov.win; - return 0; -} - -static int vidioc_g_fmt_vbi_cap(struct file *file, void *fh, struct v4l2_format *f) -{ - struct saa7146_dev *dev = ((struct saa7146_fh *)fh)->dev; - struct saa7146_vv *vv = dev->vv_data; - - f->fmt.vbi = vv->vbi_fmt; - return 0; -} - -static int vidioc_try_fmt_vid_cap(struct file *file, void *fh, struct v4l2_format *f) -{ - struct saa7146_dev *dev = ((struct saa7146_fh *)fh)->dev; - struct saa7146_vv *vv = dev->vv_data; - struct saa7146_format *fmt; - enum v4l2_field field; - int maxw, maxh; - int calc_bpl; - - DEB_EE("V4L2_BUF_TYPE_VIDEO_CAPTURE: dev:%p, fh:%p\n", dev, fh); - - fmt = saa7146_format_by_fourcc(dev, f->fmt.pix.pixelformat); - if (NULL == fmt) - return -EINVAL; - - field = f->fmt.pix.field; - maxw = vv->standard->h_max_out; - maxh = vv->standard->v_max_out; - - if (V4L2_FIELD_ANY == field) { - field = (f->fmt.pix.height > maxh / 2) - ? V4L2_FIELD_INTERLACED - : V4L2_FIELD_BOTTOM; - } - switch (field) { - case V4L2_FIELD_ALTERNATE: - vv->last_field = V4L2_FIELD_TOP; - maxh = maxh / 2; - break; - case V4L2_FIELD_TOP: - case V4L2_FIELD_BOTTOM: - vv->last_field = V4L2_FIELD_INTERLACED; - maxh = maxh / 2; - break; - case V4L2_FIELD_INTERLACED: - vv->last_field = V4L2_FIELD_INTERLACED; - break; - default: - DEB_D("no known field mode '%d'\n", field); - return -EINVAL; - } - - f->fmt.pix.field = field; - f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M; - if (f->fmt.pix.width > maxw) - f->fmt.pix.width = maxw; - if (f->fmt.pix.height > maxh) - f->fmt.pix.height = maxh; - - calc_bpl = (f->fmt.pix.width * fmt->depth) / 8; - - if (f->fmt.pix.bytesperline < calc_bpl) - f->fmt.pix.bytesperline = calc_bpl; - - if (f->fmt.pix.bytesperline > (2 * PAGE_SIZE * fmt->depth) / 8) /* arbitrary constraint */ - f->fmt.pix.bytesperline = calc_bpl; - - f->fmt.pix.sizeimage = f->fmt.pix.bytesperline * f->fmt.pix.height; - DEB_D("w:%d, h:%d, bytesperline:%d, sizeimage:%d\n", - f->fmt.pix.width, f->fmt.pix.height, - f->fmt.pix.bytesperline, f->fmt.pix.sizeimage); - - return 0; -} - - -static int vidioc_try_fmt_vid_overlay(struct file *file, void *fh, struct v4l2_format *f) -{ - struct saa7146_dev *dev = ((struct saa7146_fh *)fh)->dev; - struct saa7146_vv *vv = dev->vv_data; - struct v4l2_window *win = &f->fmt.win; - enum v4l2_field field; - int maxw, maxh; - - DEB_EE("dev:%p\n", dev); - - if (NULL == vv->ov_fb.base) { - DEB_D("no fb base set\n"); - return -EINVAL; - } - if (NULL == vv->ov_fmt) { - DEB_D("no fb fmt set\n"); - return -EINVAL; - } - if (win->w.width < 48 || win->w.height < 32) { - DEB_D("min width/height. (%d,%d)\n", - win->w.width, win->w.height); - return -EINVAL; - } - if (win->clipcount > 16) { - DEB_D("clipcount too big\n"); - return -EINVAL; - } - - field = win->field; - maxw = vv->standard->h_max_out; - maxh = vv->standard->v_max_out; - - if (V4L2_FIELD_ANY == field) { - field = (win->w.height > maxh / 2) - ? V4L2_FIELD_INTERLACED - : V4L2_FIELD_TOP; - } - switch (field) { - case V4L2_FIELD_TOP: - case V4L2_FIELD_BOTTOM: - case V4L2_FIELD_ALTERNATE: - maxh = maxh / 2; - break; - case V4L2_FIELD_INTERLACED: - break; - default: - DEB_D("no known field mode '%d'\n", field); - return -EINVAL; - } - - win->field = field; - if (win->w.width > maxw) - win->w.width = maxw; - if (win->w.height > maxh) - win->w.height = maxh; - - return 0; -} - -static int vidioc_s_fmt_vid_cap(struct file *file, void *__fh, struct v4l2_format *f) -{ - struct saa7146_fh *fh = __fh; - struct saa7146_dev *dev = fh->dev; - struct saa7146_vv *vv = dev->vv_data; - int err; - - DEB_EE("V4L2_BUF_TYPE_VIDEO_CAPTURE: dev:%p, fh:%p\n", dev, fh); - if (IS_CAPTURE_ACTIVE(fh) != 0) { - DEB_EE("streaming capture is active\n"); - return -EBUSY; - } - err = vidioc_try_fmt_vid_cap(file, fh, f); - if (0 != err) - return err; - vv->video_fmt = f->fmt.pix; - DEB_EE("set to pixelformat '%4.4s'\n", - (char *)&vv->video_fmt.pixelformat); - return 0; -} - -static int vidioc_s_fmt_vid_overlay(struct file *file, void *__fh, struct v4l2_format *f) -{ - struct saa7146_fh *fh = __fh; - struct saa7146_dev *dev = fh->dev; - struct saa7146_vv *vv = dev->vv_data; - int err; - - DEB_EE("V4L2_BUF_TYPE_VIDEO_OVERLAY: dev:%p, fh:%p\n", dev, fh); - err = vidioc_try_fmt_vid_overlay(file, fh, f); - if (0 != err) - return err; - vv->ov.win = f->fmt.win; - vv->ov.nclips = f->fmt.win.clipcount; - if (vv->ov.nclips > 16) - vv->ov.nclips = 16; - if (copy_from_user(vv->ov.clips, f->fmt.win.clips, - sizeof(struct v4l2_clip) * vv->ov.nclips)) { - return -EFAULT; - } - - /* vv->ov.fh is used to indicate that we have valid overlay informations, too */ - vv->ov.fh = fh; - - /* check if our current overlay is active */ - if (IS_OVERLAY_ACTIVE(fh) != 0) { - saa7146_stop_preview(fh); - saa7146_start_preview(fh); - } - return 0; -} - -static int vidioc_g_std(struct file *file, void *fh, v4l2_std_id *norm) -{ - struct saa7146_dev *dev = ((struct saa7146_fh *)fh)->dev; - struct saa7146_vv *vv = dev->vv_data; - - *norm = vv->standard->id; - return 0; -} - - /* the saa7146 supfhrts (used in conjunction with the saa7111a for example) - PAL / NTSC / SECAM. if your hardware does not (or does more) - -- override this function in your extension */ -/* - case VIDIOC_ENUMSTD: - { - struct v4l2_standard *e = arg; - if (e->index < 0 ) - return -EINVAL; - if( e->index < dev->ext_vv_data->num_stds ) { - DEB_EE("VIDIOC_ENUMSTD: index:%d\n", e->index); - v4l2_video_std_construct(e, dev->ext_vv_data->stds[e->index].id, dev->ext_vv_data->stds[e->index].name); - return 0; - } - return -EINVAL; - } - */ - -static int vidioc_s_std(struct file *file, void *fh, v4l2_std_id *id) -{ - struct saa7146_dev *dev = ((struct saa7146_fh *)fh)->dev; - struct saa7146_vv *vv = dev->vv_data; - int found = 0; - int err, i; - - DEB_EE("VIDIOC_S_STD\n"); - - if ((vv->video_status & STATUS_CAPTURE) == STATUS_CAPTURE) { - DEB_D("cannot change video standard while streaming capture is active\n"); - return -EBUSY; - } - - if ((vv->video_status & STATUS_OVERLAY) != 0) { - vv->ov_suspend = vv->video_fh; - err = saa7146_stop_preview(vv->video_fh); /* side effect: video_status is now 0, video_fh is NULL */ - if (0 != err) { - DEB_D("suspending video failed. aborting\n"); - return err; - } - } - - for (i = 0; i < dev->ext_vv_data->num_stds; i++) - if (*id & dev->ext_vv_data->stds[i].id) - break; - if (i != dev->ext_vv_data->num_stds) { - vv->standard = &dev->ext_vv_data->stds[i]; - if (NULL != dev->ext_vv_data->std_callback) - dev->ext_vv_data->std_callback(dev, vv->standard); - found = 1; - } - - if (vv->ov_suspend != NULL) { - saa7146_start_preview(vv->ov_suspend); - vv->ov_suspend = NULL; - } - - if (!found) { - DEB_EE("VIDIOC_S_STD: standard not found\n"); - return -EINVAL; - } - - DEB_EE("VIDIOC_S_STD: set to standard to '%s'\n", vv->standard->name); - return 0; -} - -static int vidioc_overlay(struct file *file, void *fh, unsigned int on) -{ - int err; - - DEB_D("VIDIOC_OVERLAY on:%d\n", on); - if (on) - err = saa7146_start_preview(fh); - else - err = saa7146_stop_preview(fh); - return err; -} - -static int vidioc_reqbufs(struct file *file, void *__fh, struct v4l2_requestbuffers *b) -{ - struct saa7146_fh *fh = __fh; - - if (b->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) - return videobuf_reqbufs(&fh->video_q, b); - if (b->type == V4L2_BUF_TYPE_VBI_CAPTURE) - return videobuf_reqbufs(&fh->vbi_q, b); - return -EINVAL; -} - -static int vidioc_querybuf(struct file *file, void *__fh, struct v4l2_buffer *buf) -{ - struct saa7146_fh *fh = __fh; - - if (buf->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) - return videobuf_querybuf(&fh->video_q, buf); - if (buf->type == V4L2_BUF_TYPE_VBI_CAPTURE) - return videobuf_querybuf(&fh->vbi_q, buf); - return -EINVAL; -} - -static int vidioc_qbuf(struct file *file, void *__fh, struct v4l2_buffer *buf) -{ - struct saa7146_fh *fh = __fh; - - if (buf->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) - return videobuf_qbuf(&fh->video_q, buf); - if (buf->type == V4L2_BUF_TYPE_VBI_CAPTURE) - return videobuf_qbuf(&fh->vbi_q, buf); - return -EINVAL; -} - -static int vidioc_dqbuf(struct file *file, void *__fh, struct v4l2_buffer *buf) -{ - struct saa7146_fh *fh = __fh; - - if (buf->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) - return videobuf_dqbuf(&fh->video_q, buf, file->f_flags & O_NONBLOCK); - if (buf->type == V4L2_BUF_TYPE_VBI_CAPTURE) - return videobuf_dqbuf(&fh->vbi_q, buf, file->f_flags & O_NONBLOCK); - return -EINVAL; -} - -static int vidioc_streamon(struct file *file, void *__fh, enum v4l2_buf_type type) -{ - struct saa7146_fh *fh = __fh; - int err; - - DEB_D("VIDIOC_STREAMON, type:%d\n", type); - - err = video_begin(fh); - if (err) - return err; - if (type == V4L2_BUF_TYPE_VIDEO_CAPTURE) - return videobuf_streamon(&fh->video_q); - if (type == V4L2_BUF_TYPE_VBI_CAPTURE) - return videobuf_streamon(&fh->vbi_q); - return -EINVAL; -} - -static int vidioc_streamoff(struct file *file, void *__fh, enum v4l2_buf_type type) -{ - struct saa7146_fh *fh = __fh; - struct saa7146_dev *dev = fh->dev; - struct saa7146_vv *vv = dev->vv_data; - int err; - - DEB_D("VIDIOC_STREAMOFF, type:%d\n", type); - - /* ugly: we need to copy some checks from video_end(), - because videobuf_streamoff() relies on the capture running. - check and fix this */ - if ((vv->video_status & STATUS_CAPTURE) != STATUS_CAPTURE) { - DEB_S("not capturing\n"); - return 0; - } - - if (vv->video_fh != fh) { - DEB_S("capturing, but in another open\n"); - return -EBUSY; - } - - err = -EINVAL; - if (type == V4L2_BUF_TYPE_VIDEO_CAPTURE) - err = videobuf_streamoff(&fh->video_q); - else if (type == V4L2_BUF_TYPE_VBI_CAPTURE) - err = videobuf_streamoff(&fh->vbi_q); - if (0 != err) { - DEB_D("warning: videobuf_streamoff() failed\n"); - video_end(fh, file); - } else { - err = video_end(fh, file); - } - return err; -} - -static int vidioc_g_chip_ident(struct file *file, void *__fh, - struct v4l2_dbg_chip_ident *chip) -{ - struct saa7146_fh *fh = __fh; - struct saa7146_dev *dev = fh->dev; - - chip->ident = V4L2_IDENT_NONE; - chip->revision = 0; - if (chip->match.type == V4L2_CHIP_MATCH_HOST) { - if (v4l2_chip_match_host(&chip->match)) - chip->ident = V4L2_IDENT_SAA7146; - return 0; - } - if (chip->match.type != V4L2_CHIP_MATCH_I2C_DRIVER && - chip->match.type != V4L2_CHIP_MATCH_I2C_ADDR) - return -EINVAL; - return v4l2_device_call_until_err(&dev->v4l2_dev, 0, - core, g_chip_ident, chip); -} - -const struct v4l2_ioctl_ops saa7146_video_ioctl_ops = { - .vidioc_querycap = vidioc_querycap, - .vidioc_enum_fmt_vid_cap = vidioc_enum_fmt_vid_cap, - .vidioc_enum_fmt_vid_overlay = vidioc_enum_fmt_vid_cap, - .vidioc_g_fmt_vid_cap = vidioc_g_fmt_vid_cap, - .vidioc_try_fmt_vid_cap = vidioc_try_fmt_vid_cap, - .vidioc_s_fmt_vid_cap = vidioc_s_fmt_vid_cap, - .vidioc_g_fmt_vid_overlay = vidioc_g_fmt_vid_overlay, - .vidioc_try_fmt_vid_overlay = vidioc_try_fmt_vid_overlay, - .vidioc_s_fmt_vid_overlay = vidioc_s_fmt_vid_overlay, - .vidioc_g_chip_ident = vidioc_g_chip_ident, - - .vidioc_overlay = vidioc_overlay, - .vidioc_g_fbuf = vidioc_g_fbuf, - .vidioc_s_fbuf = vidioc_s_fbuf, - .vidioc_reqbufs = vidioc_reqbufs, - .vidioc_querybuf = vidioc_querybuf, - .vidioc_qbuf = vidioc_qbuf, - .vidioc_dqbuf = vidioc_dqbuf, - .vidioc_g_std = vidioc_g_std, - .vidioc_s_std = vidioc_s_std, - .vidioc_streamon = vidioc_streamon, - .vidioc_streamoff = vidioc_streamoff, - .vidioc_g_parm = vidioc_g_parm, - .vidioc_subscribe_event = v4l2_ctrl_subscribe_event, - .vidioc_unsubscribe_event = v4l2_event_unsubscribe, -}; - -const struct v4l2_ioctl_ops saa7146_vbi_ioctl_ops = { - .vidioc_querycap = vidioc_querycap, - .vidioc_g_fmt_vbi_cap = vidioc_g_fmt_vbi_cap, - .vidioc_g_chip_ident = vidioc_g_chip_ident, - - .vidioc_reqbufs = vidioc_reqbufs, - .vidioc_querybuf = vidioc_querybuf, - .vidioc_qbuf = vidioc_qbuf, - .vidioc_dqbuf = vidioc_dqbuf, - .vidioc_g_std = vidioc_g_std, - .vidioc_s_std = vidioc_s_std, - .vidioc_streamon = vidioc_streamon, - .vidioc_streamoff = vidioc_streamoff, - .vidioc_g_parm = vidioc_g_parm, - .vidioc_subscribe_event = v4l2_ctrl_subscribe_event, - .vidioc_unsubscribe_event = v4l2_event_unsubscribe, -}; - -/*********************************************************************************/ -/* buffer handling functions */ - -static int buffer_activate (struct saa7146_dev *dev, - struct saa7146_buf *buf, - struct saa7146_buf *next) -{ - struct saa7146_vv *vv = dev->vv_data; - - buf->vb.state = VIDEOBUF_ACTIVE; - saa7146_set_capture(dev,buf,next); - - mod_timer(&vv->video_dmaq.timeout, jiffies+BUFFER_TIMEOUT); - return 0; -} - -static void release_all_pagetables(struct saa7146_dev *dev, struct saa7146_buf *buf) -{ - saa7146_pgtable_free(dev->pci, &buf->pt[0]); - saa7146_pgtable_free(dev->pci, &buf->pt[1]); - saa7146_pgtable_free(dev->pci, &buf->pt[2]); -} - -static int buffer_prepare(struct videobuf_queue *q, - struct videobuf_buffer *vb, enum v4l2_field field) -{ - struct file *file = q->priv_data; - struct saa7146_fh *fh = file->private_data; - struct saa7146_dev *dev = fh->dev; - struct saa7146_vv *vv = dev->vv_data; - struct saa7146_buf *buf = (struct saa7146_buf *)vb; - int size,err = 0; - - DEB_CAP("vbuf:%p\n", vb); - - /* sanity checks */ - if (vv->video_fmt.width < 48 || - vv->video_fmt.height < 32 || - vv->video_fmt.width > vv->standard->h_max_out || - vv->video_fmt.height > vv->standard->v_max_out) { - DEB_D("w (%d) / h (%d) out of bounds\n", - vv->video_fmt.width, vv->video_fmt.height); - return -EINVAL; - } - - size = vv->video_fmt.sizeimage; - if (0 != buf->vb.baddr && buf->vb.bsize < size) { - DEB_D("size mismatch\n"); - return -EINVAL; - } - - DEB_CAP("buffer_prepare [size=%dx%d,bytes=%d,fields=%s]\n", - vv->video_fmt.width, vv->video_fmt.height, - size, v4l2_field_names[vv->video_fmt.field]); - if (buf->vb.width != vv->video_fmt.width || - buf->vb.bytesperline != vv->video_fmt.bytesperline || - buf->vb.height != vv->video_fmt.height || - buf->vb.size != size || - buf->vb.field != field || - buf->vb.field != vv->video_fmt.field || - buf->fmt != &vv->video_fmt) { - saa7146_dma_free(dev,q,buf); - } - - if (VIDEOBUF_NEEDS_INIT == buf->vb.state) { - struct saa7146_format *sfmt; - - buf->vb.bytesperline = vv->video_fmt.bytesperline; - buf->vb.width = vv->video_fmt.width; - buf->vb.height = vv->video_fmt.height; - buf->vb.size = size; - buf->vb.field = field; - buf->fmt = &vv->video_fmt; - buf->vb.field = vv->video_fmt.field; - - sfmt = saa7146_format_by_fourcc(dev,buf->fmt->pixelformat); - - release_all_pagetables(dev, buf); - if( 0 != IS_PLANAR(sfmt->trans)) { - saa7146_pgtable_alloc(dev->pci, &buf->pt[0]); - saa7146_pgtable_alloc(dev->pci, &buf->pt[1]); - saa7146_pgtable_alloc(dev->pci, &buf->pt[2]); - } else { - saa7146_pgtable_alloc(dev->pci, &buf->pt[0]); - } - - err = videobuf_iolock(q,&buf->vb, &vv->ov_fb); - if (err) - goto oops; - err = saa7146_pgtable_build(dev,buf); - if (err) - goto oops; - } - buf->vb.state = VIDEOBUF_PREPARED; - buf->activate = buffer_activate; - - return 0; - - oops: - DEB_D("error out\n"); - saa7146_dma_free(dev,q,buf); - - return err; -} - -static int buffer_setup(struct videobuf_queue *q, unsigned int *count, unsigned int *size) -{ - struct file *file = q->priv_data; - struct saa7146_fh *fh = file->private_data; - struct saa7146_vv *vv = fh->dev->vv_data; - - if (0 == *count || *count > MAX_SAA7146_CAPTURE_BUFFERS) - *count = MAX_SAA7146_CAPTURE_BUFFERS; - - *size = vv->video_fmt.sizeimage; - - /* check if we exceed the "max_memory" parameter */ - if( (*count * *size) > (max_memory*1048576) ) { - *count = (max_memory*1048576) / *size; - } - - DEB_CAP("%d buffers, %d bytes each\n", *count, *size); - - return 0; -} - -static void buffer_queue(struct videobuf_queue *q, struct videobuf_buffer *vb) -{ - struct file *file = q->priv_data; - struct saa7146_fh *fh = file->private_data; - struct saa7146_dev *dev = fh->dev; - struct saa7146_vv *vv = dev->vv_data; - struct saa7146_buf *buf = (struct saa7146_buf *)vb; - - DEB_CAP("vbuf:%p\n", vb); - saa7146_buffer_queue(fh->dev, &vv->video_dmaq, buf); -} - -static void buffer_release(struct videobuf_queue *q, struct videobuf_buffer *vb) -{ - struct file *file = q->priv_data; - struct saa7146_fh *fh = file->private_data; - struct saa7146_dev *dev = fh->dev; - struct saa7146_buf *buf = (struct saa7146_buf *)vb; - - DEB_CAP("vbuf:%p\n", vb); - - saa7146_dma_free(dev,q,buf); - - release_all_pagetables(dev, buf); -} - -static struct videobuf_queue_ops video_qops = { - .buf_setup = buffer_setup, - .buf_prepare = buffer_prepare, - .buf_queue = buffer_queue, - .buf_release = buffer_release, -}; - -/********************************************************************************/ -/* file operations */ - -static void video_init(struct saa7146_dev *dev, struct saa7146_vv *vv) -{ - INIT_LIST_HEAD(&vv->video_dmaq.queue); - - init_timer(&vv->video_dmaq.timeout); - vv->video_dmaq.timeout.function = saa7146_buffer_timeout; - vv->video_dmaq.timeout.data = (unsigned long)(&vv->video_dmaq); - vv->video_dmaq.dev = dev; - - /* set some default values */ - vv->standard = &dev->ext_vv_data->stds[0]; - - /* FIXME: what's this? */ - vv->current_hps_source = SAA7146_HPS_SOURCE_PORT_A; - vv->current_hps_sync = SAA7146_HPS_SYNC_PORT_A; -} - - -static int video_open(struct saa7146_dev *dev, struct file *file) -{ - struct saa7146_fh *fh = file->private_data; - - videobuf_queue_sg_init(&fh->video_q, &video_qops, - &dev->pci->dev, &dev->slock, - V4L2_BUF_TYPE_VIDEO_CAPTURE, - V4L2_FIELD_INTERLACED, - sizeof(struct saa7146_buf), - file, &dev->v4l2_lock); - - return 0; -} - - -static void video_close(struct saa7146_dev *dev, struct file *file) -{ - struct saa7146_fh *fh = file->private_data; - struct saa7146_vv *vv = dev->vv_data; - struct videobuf_queue *q = &fh->video_q; - - if (IS_CAPTURE_ACTIVE(fh) != 0) - video_end(fh, file); - else if (IS_OVERLAY_ACTIVE(fh) != 0) - saa7146_stop_preview(fh); - - videobuf_stop(q); - /* hmm, why is this function declared void? */ -} - - -static void video_irq_done(struct saa7146_dev *dev, unsigned long st) -{ - struct saa7146_vv *vv = dev->vv_data; - struct saa7146_dmaqueue *q = &vv->video_dmaq; - - spin_lock(&dev->slock); - DEB_CAP("called\n"); - - /* only finish the buffer if we have one... */ - if( NULL != q->curr ) { - saa7146_buffer_finish(dev,q,VIDEOBUF_DONE); - } - saa7146_buffer_next(dev,q,0); - - spin_unlock(&dev->slock); -} - -static ssize_t video_read(struct file *file, char __user *data, size_t count, loff_t *ppos) -{ - struct saa7146_fh *fh = file->private_data; - struct saa7146_dev *dev = fh->dev; - struct saa7146_vv *vv = dev->vv_data; - ssize_t ret = 0; - - DEB_EE("called\n"); - - if ((vv->video_status & STATUS_CAPTURE) != 0) { - /* fixme: should we allow read() captures while streaming capture? */ - if (vv->video_fh == fh) { - DEB_S("already capturing\n"); - return -EBUSY; - } - DEB_S("already capturing in another open\n"); - return -EBUSY; - } - - ret = video_begin(fh); - if( 0 != ret) { - goto out; - } - - ret = videobuf_read_one(&fh->video_q , data, count, ppos, - file->f_flags & O_NONBLOCK); - if (ret != 0) { - video_end(fh, file); - } else { - ret = video_end(fh, file); - } -out: - /* restart overlay if it was active before */ - if (vv->ov_suspend != NULL) { - saa7146_start_preview(vv->ov_suspend); - vv->ov_suspend = NULL; - } - - return ret; -} - -struct saa7146_use_ops saa7146_video_uops = { - .init = video_init, - .open = video_open, - .release = video_close, - .irq_done = video_irq_done, - .read = video_read, -}; |