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abca2056dc
VIDIOC_DBG_G_CHIP_IDENT has been replaced by VIDIOC_DBG_G_CHIP_INFO. Remove g_chip_ident support from bridge drivers since it is no longer needed. This patch takes care of all the trivial cases. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Acked-by: Lad, Prabhakar <prabhakar.csengg@gmail.com> Acked-by: Scott Jiang <scott.jiang.linux@gmail.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
1310 lines
34 KiB
C
1310 lines
34 KiB
C
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
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#include <media/saa7146_vv.h>
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#include <media/v4l2-event.h>
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#include <media/v4l2-ctrls.h>
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#include <linux/module.h>
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static int max_memory = 32;
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module_param(max_memory, int, 0644);
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MODULE_PARM_DESC(max_memory, "maximum memory usage for capture buffers (default: 32Mb)");
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#define IS_CAPTURE_ACTIVE(fh) \
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(((vv->video_status & STATUS_CAPTURE) != 0) && (vv->video_fh == fh))
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#define IS_OVERLAY_ACTIVE(fh) \
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(((vv->video_status & STATUS_OVERLAY) != 0) && (vv->video_fh == fh))
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/* format descriptions for capture and preview */
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static struct saa7146_format formats[] = {
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{
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.name = "RGB-8 (3-3-2)",
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.pixelformat = V4L2_PIX_FMT_RGB332,
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.trans = RGB08_COMPOSED,
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.depth = 8,
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.flags = 0,
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}, {
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.name = "RGB-16 (5/B-6/G-5/R)",
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.pixelformat = V4L2_PIX_FMT_RGB565,
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.trans = RGB16_COMPOSED,
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.depth = 16,
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.flags = 0,
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}, {
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.name = "RGB-24 (B-G-R)",
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.pixelformat = V4L2_PIX_FMT_BGR24,
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.trans = RGB24_COMPOSED,
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.depth = 24,
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.flags = 0,
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}, {
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.name = "RGB-32 (B-G-R)",
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.pixelformat = V4L2_PIX_FMT_BGR32,
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.trans = RGB32_COMPOSED,
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.depth = 32,
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.flags = 0,
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}, {
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.name = "RGB-32 (R-G-B)",
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.pixelformat = V4L2_PIX_FMT_RGB32,
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.trans = RGB32_COMPOSED,
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.depth = 32,
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.flags = 0,
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.swap = 0x2,
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}, {
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.name = "Greyscale-8",
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.pixelformat = V4L2_PIX_FMT_GREY,
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.trans = Y8,
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.depth = 8,
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.flags = 0,
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}, {
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.name = "YUV 4:2:2 planar (Y-Cb-Cr)",
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.pixelformat = V4L2_PIX_FMT_YUV422P,
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.trans = YUV422_DECOMPOSED,
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.depth = 16,
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.flags = FORMAT_BYTE_SWAP|FORMAT_IS_PLANAR,
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}, {
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.name = "YVU 4:2:0 planar (Y-Cb-Cr)",
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.pixelformat = V4L2_PIX_FMT_YVU420,
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.trans = YUV420_DECOMPOSED,
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.depth = 12,
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.flags = FORMAT_BYTE_SWAP|FORMAT_IS_PLANAR,
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}, {
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.name = "YUV 4:2:0 planar (Y-Cb-Cr)",
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.pixelformat = V4L2_PIX_FMT_YUV420,
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.trans = YUV420_DECOMPOSED,
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.depth = 12,
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.flags = FORMAT_IS_PLANAR,
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}, {
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.name = "YUV 4:2:2 (U-Y-V-Y)",
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.pixelformat = V4L2_PIX_FMT_UYVY,
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.trans = YUV422_COMPOSED,
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.depth = 16,
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.flags = 0,
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}
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};
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/* unfortunately, the saa7146 contains a bug which prevents it from doing on-the-fly byte swaps.
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due to this, it's impossible to provide additional *packed* formats, which are simply byte swapped
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(like V4L2_PIX_FMT_YUYV) ... 8-( */
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static int NUM_FORMATS = sizeof(formats)/sizeof(struct saa7146_format);
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struct saa7146_format* saa7146_format_by_fourcc(struct saa7146_dev *dev, int fourcc)
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{
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int i, j = NUM_FORMATS;
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for (i = 0; i < j; i++) {
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if (formats[i].pixelformat == fourcc) {
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return formats+i;
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}
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}
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DEB_D("unknown pixelformat:'%4.4s'\n", (char *)&fourcc);
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return NULL;
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}
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static int vidioc_try_fmt_vid_overlay(struct file *file, void *fh, struct v4l2_format *f);
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int saa7146_start_preview(struct saa7146_fh *fh)
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{
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struct saa7146_dev *dev = fh->dev;
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struct saa7146_vv *vv = dev->vv_data;
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struct v4l2_format fmt;
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int ret = 0, err = 0;
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DEB_EE("dev:%p, fh:%p\n", dev, fh);
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/* check if we have overlay information */
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if (vv->ov.fh == NULL) {
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DEB_D("no overlay data available. try S_FMT first.\n");
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return -EAGAIN;
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}
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/* check if streaming capture is running */
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if (IS_CAPTURE_ACTIVE(fh) != 0) {
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DEB_D("streaming capture is active\n");
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return -EBUSY;
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}
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/* check if overlay is running */
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if (IS_OVERLAY_ACTIVE(fh) != 0) {
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if (vv->video_fh == fh) {
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DEB_D("overlay is already active\n");
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return 0;
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}
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DEB_D("overlay is already active in another open\n");
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return -EBUSY;
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}
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if (0 == saa7146_res_get(fh, RESOURCE_DMA1_HPS|RESOURCE_DMA2_CLP)) {
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DEB_D("cannot get necessary overlay resources\n");
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return -EBUSY;
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}
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fmt.fmt.win = vv->ov.win;
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err = vidioc_try_fmt_vid_overlay(NULL, fh, &fmt);
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if (0 != err) {
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saa7146_res_free(vv->video_fh, RESOURCE_DMA1_HPS|RESOURCE_DMA2_CLP);
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return -EBUSY;
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}
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vv->ov.win = fmt.fmt.win;
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DEB_D("%dx%d+%d+%d %s field=%s\n",
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vv->ov.win.w.width, vv->ov.win.w.height,
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vv->ov.win.w.left, vv->ov.win.w.top,
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vv->ov_fmt->name, v4l2_field_names[vv->ov.win.field]);
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if (0 != (ret = saa7146_enable_overlay(fh))) {
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DEB_D("enabling overlay failed: %d\n", ret);
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saa7146_res_free(vv->video_fh, RESOURCE_DMA1_HPS|RESOURCE_DMA2_CLP);
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return ret;
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}
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vv->video_status = STATUS_OVERLAY;
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vv->video_fh = fh;
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return 0;
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}
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EXPORT_SYMBOL_GPL(saa7146_start_preview);
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int saa7146_stop_preview(struct saa7146_fh *fh)
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{
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struct saa7146_dev *dev = fh->dev;
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struct saa7146_vv *vv = dev->vv_data;
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DEB_EE("dev:%p, fh:%p\n", dev, fh);
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/* check if streaming capture is running */
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if (IS_CAPTURE_ACTIVE(fh) != 0) {
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DEB_D("streaming capture is active\n");
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return -EBUSY;
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}
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/* check if overlay is running at all */
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if ((vv->video_status & STATUS_OVERLAY) == 0) {
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DEB_D("no active overlay\n");
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return 0;
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}
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if (vv->video_fh != fh) {
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DEB_D("overlay is active, but in another open\n");
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return -EBUSY;
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}
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vv->video_status = 0;
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vv->video_fh = NULL;
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saa7146_disable_overlay(fh);
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saa7146_res_free(fh, RESOURCE_DMA1_HPS|RESOURCE_DMA2_CLP);
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return 0;
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}
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EXPORT_SYMBOL_GPL(saa7146_stop_preview);
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/********************************************************************************/
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/* common pagetable functions */
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static int saa7146_pgtable_build(struct saa7146_dev *dev, struct saa7146_buf *buf)
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{
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struct pci_dev *pci = dev->pci;
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struct videobuf_dmabuf *dma=videobuf_to_dma(&buf->vb);
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struct scatterlist *list = dma->sglist;
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int length = dma->sglen;
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struct saa7146_format *sfmt = saa7146_format_by_fourcc(dev,buf->fmt->pixelformat);
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DEB_EE("dev:%p, buf:%p, sg_len:%d\n", dev, buf, length);
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if( 0 != IS_PLANAR(sfmt->trans)) {
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struct saa7146_pgtable *pt1 = &buf->pt[0];
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struct saa7146_pgtable *pt2 = &buf->pt[1];
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struct saa7146_pgtable *pt3 = &buf->pt[2];
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__le32 *ptr1, *ptr2, *ptr3;
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__le32 fill;
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int size = buf->fmt->width*buf->fmt->height;
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int i,p,m1,m2,m3,o1,o2;
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switch( sfmt->depth ) {
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case 12: {
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/* create some offsets inside the page table */
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m1 = ((size+PAGE_SIZE)/PAGE_SIZE)-1;
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m2 = ((size+(size/4)+PAGE_SIZE)/PAGE_SIZE)-1;
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m3 = ((size+(size/2)+PAGE_SIZE)/PAGE_SIZE)-1;
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o1 = size%PAGE_SIZE;
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o2 = (size+(size/4))%PAGE_SIZE;
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DEB_CAP("size:%d, m1:%d, m2:%d, m3:%d, o1:%d, o2:%d\n",
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size, m1, m2, m3, o1, o2);
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break;
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}
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case 16: {
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/* create some offsets inside the page table */
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m1 = ((size+PAGE_SIZE)/PAGE_SIZE)-1;
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m2 = ((size+(size/2)+PAGE_SIZE)/PAGE_SIZE)-1;
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m3 = ((2*size+PAGE_SIZE)/PAGE_SIZE)-1;
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o1 = size%PAGE_SIZE;
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o2 = (size+(size/2))%PAGE_SIZE;
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DEB_CAP("size:%d, m1:%d, m2:%d, m3:%d, o1:%d, o2:%d\n",
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size, m1, m2, m3, o1, o2);
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break;
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}
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default: {
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return -1;
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}
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}
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ptr1 = pt1->cpu;
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ptr2 = pt2->cpu;
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ptr3 = pt3->cpu;
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/* walk all pages, copy all page addresses to ptr1 */
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for (i = 0; i < length; i++, list++) {
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for (p = 0; p * 4096 < list->length; p++, ptr1++) {
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*ptr1 = cpu_to_le32(sg_dma_address(list) - list->offset);
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}
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}
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/*
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ptr1 = pt1->cpu;
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for(j=0;j<40;j++) {
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printk("ptr1 %d: 0x%08x\n",j,ptr1[j]);
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}
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*/
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/* if we have a user buffer, the first page may not be
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aligned to a page boundary. */
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pt1->offset = dma->sglist->offset;
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pt2->offset = pt1->offset+o1;
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pt3->offset = pt1->offset+o2;
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/* create video-dma2 page table */
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ptr1 = pt1->cpu;
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for(i = m1; i <= m2 ; i++, ptr2++) {
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*ptr2 = ptr1[i];
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}
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fill = *(ptr2-1);
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for(;i<1024;i++,ptr2++) {
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*ptr2 = fill;
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}
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/* create video-dma3 page table */
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ptr1 = pt1->cpu;
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for(i = m2; i <= m3; i++,ptr3++) {
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*ptr3 = ptr1[i];
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}
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fill = *(ptr3-1);
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for(;i<1024;i++,ptr3++) {
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*ptr3 = fill;
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}
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/* finally: finish up video-dma1 page table */
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ptr1 = pt1->cpu+m1;
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fill = pt1->cpu[m1];
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for(i=m1;i<1024;i++,ptr1++) {
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*ptr1 = fill;
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}
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/*
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ptr1 = pt1->cpu;
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ptr2 = pt2->cpu;
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ptr3 = pt3->cpu;
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for(j=0;j<40;j++) {
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printk("ptr1 %d: 0x%08x\n",j,ptr1[j]);
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}
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for(j=0;j<40;j++) {
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printk("ptr2 %d: 0x%08x\n",j,ptr2[j]);
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}
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for(j=0;j<40;j++) {
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printk("ptr3 %d: 0x%08x\n",j,ptr3[j]);
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}
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*/
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} else {
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struct saa7146_pgtable *pt = &buf->pt[0];
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return saa7146_pgtable_build_single(pci, pt, list, length);
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}
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return 0;
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}
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/********************************************************************************/
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/* file operations */
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static int video_begin(struct saa7146_fh *fh)
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{
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struct saa7146_dev *dev = fh->dev;
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struct saa7146_vv *vv = dev->vv_data;
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struct saa7146_format *fmt = NULL;
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unsigned int resource;
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int ret = 0, err = 0;
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DEB_EE("dev:%p, fh:%p\n", dev, fh);
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if ((vv->video_status & STATUS_CAPTURE) != 0) {
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if (vv->video_fh == fh) {
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DEB_S("already capturing\n");
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return 0;
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}
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DEB_S("already capturing in another open\n");
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return -EBUSY;
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}
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if ((vv->video_status & STATUS_OVERLAY) != 0) {
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DEB_S("warning: suspending overlay video for streaming capture\n");
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vv->ov_suspend = vv->video_fh;
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err = saa7146_stop_preview(vv->video_fh); /* side effect: video_status is now 0, video_fh is NULL */
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if (0 != err) {
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DEB_D("suspending video failed. aborting\n");
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return err;
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}
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}
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fmt = saa7146_format_by_fourcc(dev, vv->video_fmt.pixelformat);
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/* we need to have a valid format set here */
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BUG_ON(NULL == fmt);
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if (0 != (fmt->flags & FORMAT_IS_PLANAR)) {
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resource = RESOURCE_DMA1_HPS|RESOURCE_DMA2_CLP|RESOURCE_DMA3_BRS;
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} else {
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resource = RESOURCE_DMA1_HPS;
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}
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ret = saa7146_res_get(fh, resource);
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if (0 == ret) {
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DEB_S("cannot get capture resource %d\n", resource);
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if (vv->ov_suspend != NULL) {
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saa7146_start_preview(vv->ov_suspend);
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vv->ov_suspend = NULL;
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}
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return -EBUSY;
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}
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/* clear out beginning of streaming bit (rps register 0)*/
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saa7146_write(dev, MC2, MASK_27 );
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/* enable rps0 irqs */
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SAA7146_IER_ENABLE(dev, MASK_27);
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vv->video_fh = fh;
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vv->video_status = STATUS_CAPTURE;
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return 0;
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}
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static int video_end(struct saa7146_fh *fh, struct file *file)
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{
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struct saa7146_dev *dev = fh->dev;
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struct saa7146_vv *vv = dev->vv_data;
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struct saa7146_format *fmt = NULL;
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unsigned long flags;
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unsigned int resource;
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u32 dmas = 0;
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DEB_EE("dev:%p, fh:%p\n", dev, fh);
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if ((vv->video_status & STATUS_CAPTURE) != STATUS_CAPTURE) {
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DEB_S("not capturing\n");
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return 0;
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}
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if (vv->video_fh != fh) {
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DEB_S("capturing, but in another open\n");
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return -EBUSY;
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}
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fmt = saa7146_format_by_fourcc(dev, vv->video_fmt.pixelformat);
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/* we need to have a valid format set here */
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BUG_ON(NULL == fmt);
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if (0 != (fmt->flags & FORMAT_IS_PLANAR)) {
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resource = RESOURCE_DMA1_HPS|RESOURCE_DMA2_CLP|RESOURCE_DMA3_BRS;
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dmas = MASK_22 | MASK_21 | MASK_20;
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} else {
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resource = RESOURCE_DMA1_HPS;
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dmas = MASK_22;
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}
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spin_lock_irqsave(&dev->slock,flags);
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/* disable rps0 */
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saa7146_write(dev, MC1, MASK_28);
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/* disable rps0 irqs */
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SAA7146_IER_DISABLE(dev, MASK_27);
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/* shut down all used video dma transfers */
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saa7146_write(dev, MC1, dmas);
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spin_unlock_irqrestore(&dev->slock, flags);
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vv->video_fh = NULL;
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vv->video_status = 0;
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saa7146_res_free(fh, resource);
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if (vv->ov_suspend != NULL) {
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saa7146_start_preview(vv->ov_suspend);
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vv->ov_suspend = NULL;
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}
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return 0;
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}
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static int vidioc_querycap(struct file *file, void *fh, struct v4l2_capability *cap)
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{
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struct video_device *vdev = video_devdata(file);
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struct saa7146_dev *dev = ((struct saa7146_fh *)fh)->dev;
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strcpy((char *)cap->driver, "saa7146 v4l2");
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strlcpy((char *)cap->card, dev->ext->name, sizeof(cap->card));
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sprintf((char *)cap->bus_info, "PCI:%s", pci_name(dev->pci));
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cap->device_caps =
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V4L2_CAP_VIDEO_CAPTURE |
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V4L2_CAP_VIDEO_OVERLAY |
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V4L2_CAP_READWRITE |
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V4L2_CAP_STREAMING;
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cap->device_caps |= dev->ext_vv_data->capabilities;
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cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS;
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if (vdev->vfl_type == VFL_TYPE_GRABBER)
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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, const 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;
|
|
}
|
|
|
|
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_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_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,
|
|
};
|