forked from Minki/linux
1da177e4c3
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
1510 lines
36 KiB
C
1510 lines
36 KiB
C
#include <media/saa7146_vv.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* 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 g_fmt(struct saa7146_fh *fh, struct v4l2_format *f)
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{
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struct saa7146_dev *dev = fh->dev;
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DEB_EE(("dev:%p, fh:%p\n",dev,fh));
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switch (f->type) {
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case V4L2_BUF_TYPE_VIDEO_CAPTURE:
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f->fmt.pix = fh->video_fmt;
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return 0;
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case V4L2_BUF_TYPE_VIDEO_OVERLAY:
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f->fmt.win = fh->ov.win;
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return 0;
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case V4L2_BUF_TYPE_VBI_CAPTURE:
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{
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f->fmt.vbi = fh->vbi_fmt;
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return 0;
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}
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default:
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DEB_D(("invalid format type '%d'.\n",f->type));
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return -EINVAL;
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}
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}
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static int try_win(struct saa7146_dev *dev, struct v4l2_window *win)
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{
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struct saa7146_vv *vv = dev->vv_data;
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enum v4l2_field field;
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int maxw, maxh;
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DEB_EE(("dev:%p\n",dev));
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if (NULL == vv->ov_fb.base) {
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DEB_D(("no fb base set.\n"));
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return -EINVAL;
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}
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if (NULL == vv->ov_fmt) {
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DEB_D(("no fb fmt set.\n"));
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return -EINVAL;
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}
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if (win->w.width < 48 || win->w.height < 32) {
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DEB_D(("min width/height. (%d,%d)\n",win->w.width,win->w.height));
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return -EINVAL;
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}
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if (win->clipcount > 16) {
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DEB_D(("clipcount too big.\n"));
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return -EINVAL;
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}
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field = win->field;
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maxw = vv->standard->h_max_out;
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maxh = vv->standard->v_max_out;
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if (V4L2_FIELD_ANY == field) {
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field = (win->w.height > maxh/2)
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? V4L2_FIELD_INTERLACED
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: V4L2_FIELD_TOP;
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}
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switch (field) {
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case V4L2_FIELD_TOP:
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case V4L2_FIELD_BOTTOM:
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case V4L2_FIELD_ALTERNATE:
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maxh = maxh / 2;
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break;
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case V4L2_FIELD_INTERLACED:
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break;
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default: {
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DEB_D(("no known field mode '%d'.\n",field));
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return -EINVAL;
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}
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}
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win->field = field;
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if (win->w.width > maxw)
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win->w.width = maxw;
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if (win->w.height > maxh)
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win->w.height = maxh;
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return 0;
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}
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static int try_fmt(struct saa7146_fh *fh, struct v4l2_format *f)
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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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int err;
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switch (f->type) {
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case V4L2_BUF_TYPE_VIDEO_CAPTURE:
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{
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struct saa7146_format *fmt;
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enum v4l2_field field;
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int maxw, maxh;
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int calc_bpl;
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DEB_EE(("V4L2_BUF_TYPE_VIDEO_CAPTURE: dev:%p, fh:%p\n",dev,fh));
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fmt = format_by_fourcc(dev,f->fmt.pix.pixelformat);
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if (NULL == fmt) {
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return -EINVAL;
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}
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field = f->fmt.pix.field;
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maxw = vv->standard->h_max_out;
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maxh = vv->standard->v_max_out;
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if (V4L2_FIELD_ANY == field) {
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field = (f->fmt.pix.height > maxh/2)
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? V4L2_FIELD_INTERLACED
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: V4L2_FIELD_BOTTOM;
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}
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switch (field) {
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case V4L2_FIELD_ALTERNATE: {
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vv->last_field = V4L2_FIELD_TOP;
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maxh = maxh / 2;
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break;
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}
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case V4L2_FIELD_TOP:
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case V4L2_FIELD_BOTTOM:
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vv->last_field = V4L2_FIELD_INTERLACED;
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maxh = maxh / 2;
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break;
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case V4L2_FIELD_INTERLACED:
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vv->last_field = V4L2_FIELD_INTERLACED;
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break;
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default: {
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DEB_D(("no known field mode '%d'.\n",field));
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return -EINVAL;
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}
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}
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f->fmt.pix.field = field;
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if (f->fmt.pix.width > maxw)
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f->fmt.pix.width = maxw;
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if (f->fmt.pix.height > maxh)
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f->fmt.pix.height = maxh;
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calc_bpl = (f->fmt.pix.width * fmt->depth)/8;
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if (f->fmt.pix.bytesperline < calc_bpl)
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f->fmt.pix.bytesperline = calc_bpl;
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if (f->fmt.pix.bytesperline > (2*PAGE_SIZE * fmt->depth)/8) /* arbitrary constraint */
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f->fmt.pix.bytesperline = calc_bpl;
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f->fmt.pix.sizeimage = f->fmt.pix.bytesperline * f->fmt.pix.height;
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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));
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return 0;
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}
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case V4L2_BUF_TYPE_VIDEO_OVERLAY:
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DEB_EE(("V4L2_BUF_TYPE_VIDEO_OVERLAY: dev:%p, fh:%p\n",dev,fh));
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err = try_win(dev,&f->fmt.win);
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if (0 != err) {
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return err;
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}
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return 0;
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default:
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DEB_EE(("unknown format type '%d'\n",f->type));
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return -EINVAL;
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}
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}
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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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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 informations */
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if( NULL == fh->ov.fh ) {
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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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err = try_win(dev,&fh->ov.win);
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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_data = &fh->ov;
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DEB_D(("%dx%d+%d+%d %s field=%s\n",
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fh->ov.win.w.width,fh->ov.win.w.height,
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fh->ov.win.w.left,fh->ov.win.w.top,
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vv->ov_fmt->name,v4l2_field_names[fh->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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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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static int s_fmt(struct saa7146_fh *fh, struct v4l2_format *f)
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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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int err;
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switch (f->type) {
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case V4L2_BUF_TYPE_VIDEO_CAPTURE:
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DEB_EE(("V4L2_BUF_TYPE_VIDEO_CAPTURE: dev:%p, fh:%p\n",dev,fh));
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if (IS_CAPTURE_ACTIVE(fh) != 0) {
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DEB_EE(("streaming capture is active\n"));
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return -EBUSY;
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}
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err = try_fmt(fh,f);
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if (0 != err)
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return err;
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fh->video_fmt = f->fmt.pix;
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DEB_EE(("set to pixelformat '%4.4s'\n",(char *)&fh->video_fmt.pixelformat));
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return 0;
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case V4L2_BUF_TYPE_VIDEO_OVERLAY:
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DEB_EE(("V4L2_BUF_TYPE_VIDEO_OVERLAY: dev:%p, fh:%p\n",dev,fh));
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err = try_win(dev,&f->fmt.win);
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if (0 != err)
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return err;
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down(&dev->lock);
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fh->ov.win = f->fmt.win;
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fh->ov.nclips = f->fmt.win.clipcount;
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if (fh->ov.nclips > 16)
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fh->ov.nclips = 16;
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if (copy_from_user(fh->ov.clips,f->fmt.win.clips,sizeof(struct v4l2_clip)*fh->ov.nclips)) {
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up(&dev->lock);
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return -EFAULT;
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}
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/* fh->ov.fh is used to indicate that we have valid overlay informations, too */
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fh->ov.fh = fh;
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up(&dev->lock);
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/* check if our current overlay is active */
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if (IS_OVERLAY_ACTIVE(fh) != 0) {
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saa7146_stop_preview(fh);
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saa7146_start_preview(fh);
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}
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return 0;
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default:
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DEB_D(("unknown format type '%d'\n",f->type));
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return -EINVAL;
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}
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}
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/********************************************************************************/
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/* device controls */
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static struct v4l2_queryctrl controls[] = {
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{
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.id = V4L2_CID_BRIGHTNESS,
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.name = "Brightness",
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.minimum = 0,
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.maximum = 255,
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.step = 1,
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.default_value = 128,
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.type = V4L2_CTRL_TYPE_INTEGER,
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},{
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.id = V4L2_CID_CONTRAST,
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.name = "Contrast",
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.minimum = 0,
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.maximum = 127,
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.step = 1,
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.default_value = 64,
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.type = V4L2_CTRL_TYPE_INTEGER,
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},{
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.id = V4L2_CID_SATURATION,
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.name = "Saturation",
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.minimum = 0,
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.maximum = 127,
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.step = 1,
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.default_value = 64,
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.type = V4L2_CTRL_TYPE_INTEGER,
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},{
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.id = V4L2_CID_VFLIP,
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.name = "Vertical flip",
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.minimum = 0,
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.maximum = 1,
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.type = V4L2_CTRL_TYPE_BOOLEAN,
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},{
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.id = V4L2_CID_HFLIP,
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.name = "Horizontal flip",
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.minimum = 0,
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.maximum = 1,
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.type = V4L2_CTRL_TYPE_BOOLEAN,
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},
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};
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static int NUM_CONTROLS = sizeof(controls)/sizeof(struct v4l2_queryctrl);
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#define V4L2_CID_PRIVATE_LASTP1 (V4L2_CID_PRIVATE_BASE + 0)
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static struct v4l2_queryctrl* ctrl_by_id(int id)
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{
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int i;
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for (i = 0; i < NUM_CONTROLS; i++)
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if (controls[i].id == id)
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return controls+i;
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return NULL;
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}
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static int get_control(struct saa7146_fh *fh, struct v4l2_control *c)
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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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const struct v4l2_queryctrl* ctrl;
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u32 value = 0;
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ctrl = ctrl_by_id(c->id);
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if (NULL == ctrl)
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return -EINVAL;
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switch (c->id) {
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case V4L2_CID_BRIGHTNESS:
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value = saa7146_read(dev, BCS_CTRL);
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c->value = 0xff & (value >> 24);
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DEB_D(("V4L2_CID_BRIGHTNESS: %d\n",c->value));
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break;
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|
case V4L2_CID_CONTRAST:
|
|
value = saa7146_read(dev, BCS_CTRL);
|
|
c->value = 0x7f & (value >> 16);
|
|
DEB_D(("V4L2_CID_CONTRAST: %d\n",c->value));
|
|
break;
|
|
case V4L2_CID_SATURATION:
|
|
value = saa7146_read(dev, BCS_CTRL);
|
|
c->value = 0x7f & (value >> 0);
|
|
DEB_D(("V4L2_CID_SATURATION: %d\n",c->value));
|
|
break;
|
|
case V4L2_CID_VFLIP:
|
|
c->value = vv->vflip;
|
|
DEB_D(("V4L2_CID_VFLIP: %d\n",c->value));
|
|
break;
|
|
case V4L2_CID_HFLIP:
|
|
c->value = vv->hflip;
|
|
DEB_D(("V4L2_CID_HFLIP: %d\n",c->value));
|
|
break;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int set_control(struct saa7146_fh *fh, struct v4l2_control *c)
|
|
{
|
|
struct saa7146_dev *dev = fh->dev;
|
|
struct saa7146_vv *vv = dev->vv_data;
|
|
|
|
const struct v4l2_queryctrl* ctrl;
|
|
|
|
ctrl = ctrl_by_id(c->id);
|
|
if (NULL == ctrl) {
|
|
DEB_D(("unknown control %d\n",c->id));
|
|
return -EINVAL;
|
|
}
|
|
|
|
down(&dev->lock);
|
|
|
|
switch (ctrl->type) {
|
|
case V4L2_CTRL_TYPE_BOOLEAN:
|
|
case V4L2_CTRL_TYPE_MENU:
|
|
case V4L2_CTRL_TYPE_INTEGER:
|
|
if (c->value < ctrl->minimum)
|
|
c->value = ctrl->minimum;
|
|
if (c->value > ctrl->maximum)
|
|
c->value = ctrl->maximum;
|
|
break;
|
|
default:
|
|
/* nothing */;
|
|
};
|
|
|
|
switch (c->id) {
|
|
case V4L2_CID_BRIGHTNESS: {
|
|
u32 value = saa7146_read(dev, BCS_CTRL);
|
|
value &= 0x00ffffff;
|
|
value |= (c->value << 24);
|
|
saa7146_write(dev, BCS_CTRL, value);
|
|
saa7146_write(dev, MC2, MASK_22 | MASK_06 );
|
|
break;
|
|
}
|
|
case V4L2_CID_CONTRAST: {
|
|
u32 value = saa7146_read(dev, BCS_CTRL);
|
|
value &= 0xff00ffff;
|
|
value |= (c->value << 16);
|
|
saa7146_write(dev, BCS_CTRL, value);
|
|
saa7146_write(dev, MC2, MASK_22 | MASK_06 );
|
|
break;
|
|
}
|
|
case V4L2_CID_SATURATION: {
|
|
u32 value = saa7146_read(dev, BCS_CTRL);
|
|
value &= 0xffffff00;
|
|
value |= (c->value << 0);
|
|
saa7146_write(dev, BCS_CTRL, value);
|
|
saa7146_write(dev, MC2, MASK_22 | MASK_06 );
|
|
break;
|
|
}
|
|
case V4L2_CID_HFLIP:
|
|
/* fixme: we can support changing VFLIP and HFLIP here... */
|
|
if (IS_CAPTURE_ACTIVE(fh) != 0) {
|
|
DEB_D(("V4L2_CID_HFLIP while active capture.\n"));
|
|
up(&dev->lock);
|
|
return -EINVAL;
|
|
}
|
|
vv->hflip = c->value;
|
|
break;
|
|
case V4L2_CID_VFLIP:
|
|
if (IS_CAPTURE_ACTIVE(fh) != 0) {
|
|
DEB_D(("V4L2_CID_VFLIP while active capture.\n"));
|
|
up(&dev->lock);
|
|
return -EINVAL;
|
|
}
|
|
vv->vflip = c->value;
|
|
break;
|
|
default: {
|
|
return -EINVAL;
|
|
}
|
|
}
|
|
up(&dev->lock);
|
|
|
|
if (IS_OVERLAY_ACTIVE(fh) != 0) {
|
|
saa7146_stop_preview(fh);
|
|
saa7146_start_preview(fh);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/********************************************************************************/
|
|
/* common pagetable functions */
|
|
|
|
static int saa7146_pgtable_build(struct saa7146_dev *dev, struct saa7146_buf *buf)
|
|
{
|
|
struct pci_dev *pci = dev->pci;
|
|
struct scatterlist *list = buf->vb.dma.sglist;
|
|
int length = buf->vb.dma.sglen;
|
|
struct saa7146_format *sfmt = 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];
|
|
u32 *ptr1, *ptr2, *ptr3;
|
|
u32 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 = buf->vb.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 = format_by_fourcc(dev,fh->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 = format_by_fourcc(dev,fh->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;
|
|
}
|
|
|
|
/*
|
|
* This function is _not_ called directly, but from
|
|
* video_generic_ioctl (and maybe others). userspace
|
|
* copying is done already, arg is a kernel pointer.
|
|
*/
|
|
|
|
int saa7146_video_do_ioctl(struct inode *inode, struct file *file, unsigned int cmd, void *arg)
|
|
{
|
|
struct saa7146_fh *fh = file->private_data;
|
|
struct saa7146_dev *dev = fh->dev;
|
|
struct saa7146_vv *vv = dev->vv_data;
|
|
|
|
int err = 0, result = 0, ee = 0;
|
|
|
|
struct saa7146_use_ops *ops;
|
|
struct videobuf_queue *q;
|
|
|
|
/* check if extension handles the command */
|
|
for(ee = 0; dev->ext_vv_data->ioctls[ee].flags != 0; ee++) {
|
|
if( cmd == dev->ext_vv_data->ioctls[ee].cmd )
|
|
break;
|
|
}
|
|
|
|
if( 0 != (dev->ext_vv_data->ioctls[ee].flags & SAA7146_EXCLUSIVE) ) {
|
|
DEB_D(("extension handles ioctl exclusive.\n"));
|
|
result = dev->ext_vv_data->ioctl(fh, cmd, arg);
|
|
return result;
|
|
}
|
|
if( 0 != (dev->ext_vv_data->ioctls[ee].flags & SAA7146_BEFORE) ) {
|
|
DEB_D(("extension handles ioctl before.\n"));
|
|
result = dev->ext_vv_data->ioctl(fh, cmd, arg);
|
|
if( -EAGAIN != result ) {
|
|
return result;
|
|
}
|
|
}
|
|
|
|
/* fixme: add handle "after" case (is it still needed?) */
|
|
|
|
switch (fh->type) {
|
|
case V4L2_BUF_TYPE_VIDEO_CAPTURE: {
|
|
ops = &saa7146_video_uops;
|
|
q = &fh->video_q;
|
|
break;
|
|
}
|
|
case V4L2_BUF_TYPE_VBI_CAPTURE: {
|
|
ops = &saa7146_vbi_uops;
|
|
q = &fh->vbi_q;
|
|
break;
|
|
}
|
|
default:
|
|
BUG();
|
|
return 0;
|
|
}
|
|
|
|
switch (cmd) {
|
|
case VIDIOC_QUERYCAP:
|
|
{
|
|
struct v4l2_capability *cap = arg;
|
|
memset(cap,0,sizeof(*cap));
|
|
|
|
DEB_EE(("VIDIOC_QUERYCAP\n"));
|
|
|
|
strcpy(cap->driver, "saa7146 v4l2");
|
|
strlcpy(cap->card, dev->ext->name, sizeof(cap->card));
|
|
sprintf(cap->bus_info,"PCI:%s", pci_name(dev->pci));
|
|
cap->version = SAA7146_VERSION_CODE;
|
|
cap->capabilities =
|
|
V4L2_CAP_VIDEO_CAPTURE |
|
|
V4L2_CAP_VIDEO_OVERLAY |
|
|
V4L2_CAP_READWRITE |
|
|
V4L2_CAP_STREAMING;
|
|
cap->capabilities |= dev->ext_vv_data->capabilities;
|
|
return 0;
|
|
}
|
|
case VIDIOC_G_FBUF:
|
|
{
|
|
struct v4l2_framebuffer *fb = arg;
|
|
|
|
DEB_EE(("VIDIOC_G_FBUF\n"));
|
|
|
|
*fb = vv->ov_fb;
|
|
fb->capability = V4L2_FBUF_CAP_LIST_CLIPPING;
|
|
return 0;
|
|
}
|
|
case VIDIOC_S_FBUF:
|
|
{
|
|
struct v4l2_framebuffer *fb = arg;
|
|
struct saa7146_format *fmt;
|
|
|
|
DEB_EE(("VIDIOC_S_FBUF\n"));
|
|
|
|
if(!capable(CAP_SYS_ADMIN) &&
|
|
!capable(CAP_SYS_RAWIO))
|
|
return -EPERM;
|
|
|
|
/* check args */
|
|
fmt = 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 (0 != (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;
|
|
}
|
|
}
|
|
|
|
down(&dev->lock);
|
|
|
|
/* ok, accept it */
|
|
vv->ov_fb = *fb;
|
|
vv->ov_fmt = fmt;
|
|
if (0 == vv->ov_fb.fmt.bytesperline)
|
|
vv->ov_fb.fmt.bytesperline =
|
|
vv->ov_fb.fmt.width*fmt->depth/8;
|
|
|
|
up(&dev->lock);
|
|
|
|
return 0;
|
|
}
|
|
case VIDIOC_ENUM_FMT:
|
|
{
|
|
struct v4l2_fmtdesc *f = arg;
|
|
int index;
|
|
|
|
switch (f->type) {
|
|
case V4L2_BUF_TYPE_VIDEO_CAPTURE:
|
|
case V4L2_BUF_TYPE_VIDEO_OVERLAY: {
|
|
index = f->index;
|
|
if (index < 0 || index >= NUM_FORMATS) {
|
|
return -EINVAL;
|
|
}
|
|
memset(f,0,sizeof(*f));
|
|
f->index = index;
|
|
strlcpy(f->description,formats[index].name,sizeof(f->description));
|
|
f->pixelformat = formats[index].pixelformat;
|
|
break;
|
|
}
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
|
|
DEB_EE(("VIDIOC_ENUM_FMT: type:%d, index:%d\n",f->type,f->index));
|
|
return 0;
|
|
}
|
|
case VIDIOC_QUERYCTRL:
|
|
{
|
|
const struct v4l2_queryctrl *ctrl;
|
|
struct v4l2_queryctrl *c = arg;
|
|
|
|
if ((c->id < V4L2_CID_BASE ||
|
|
c->id >= V4L2_CID_LASTP1) &&
|
|
(c->id < V4L2_CID_PRIVATE_BASE ||
|
|
c->id >= V4L2_CID_PRIVATE_LASTP1))
|
|
return -EINVAL;
|
|
|
|
ctrl = ctrl_by_id(c->id);
|
|
if( NULL == ctrl ) {
|
|
return -EINVAL;
|
|
/*
|
|
c->flags = V4L2_CTRL_FLAG_DISABLED;
|
|
return 0;
|
|
*/
|
|
}
|
|
|
|
DEB_EE(("VIDIOC_QUERYCTRL: id:%d\n",c->id));
|
|
*c = *ctrl;
|
|
return 0;
|
|
}
|
|
case VIDIOC_G_CTRL: {
|
|
DEB_EE(("VIDIOC_G_CTRL\n"));
|
|
return get_control(fh,arg);
|
|
}
|
|
case VIDIOC_S_CTRL:
|
|
{
|
|
DEB_EE(("VIDIOC_S_CTRL\n"));
|
|
err = set_control(fh,arg);
|
|
return err;
|
|
}
|
|
case VIDIOC_G_PARM:
|
|
{
|
|
struct v4l2_streamparm *parm = arg;
|
|
if( parm->type != V4L2_BUF_TYPE_VIDEO_CAPTURE ) {
|
|
return -EINVAL;
|
|
}
|
|
memset(&parm->parm.capture,0,sizeof(struct v4l2_captureparm));
|
|
parm->parm.capture.readbuffers = 1;
|
|
// fixme: only for PAL!
|
|
parm->parm.capture.timeperframe.numerator = 1;
|
|
parm->parm.capture.timeperframe.denominator = 25;
|
|
return 0;
|
|
}
|
|
case VIDIOC_G_FMT:
|
|
{
|
|
struct v4l2_format *f = arg;
|
|
DEB_EE(("VIDIOC_G_FMT\n"));
|
|
return g_fmt(fh,f);
|
|
}
|
|
case VIDIOC_S_FMT:
|
|
{
|
|
struct v4l2_format *f = arg;
|
|
DEB_EE(("VIDIOC_S_FMT\n"));
|
|
return s_fmt(fh,f);
|
|
}
|
|
case VIDIOC_TRY_FMT:
|
|
{
|
|
struct v4l2_format *f = arg;
|
|
DEB_EE(("VIDIOC_TRY_FMT\n"));
|
|
return try_fmt(fh,f);
|
|
}
|
|
case VIDIOC_G_STD:
|
|
{
|
|
v4l2_std_id *id = arg;
|
|
DEB_EE(("VIDIOC_G_STD\n"));
|
|
*id = 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;
|
|
}
|
|
case VIDIOC_S_STD:
|
|
{
|
|
v4l2_std_id *id = arg;
|
|
int found = 0;
|
|
int i, err;
|
|
|
|
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;
|
|
}
|
|
}
|
|
|
|
down(&dev->lock);
|
|
|
|
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;
|
|
}
|
|
|
|
up(&dev->lock);
|
|
|
|
if (vv->ov_suspend != NULL) {
|
|
saa7146_start_preview(vv->ov_suspend);
|
|
vv->ov_suspend = NULL;
|
|
}
|
|
|
|
if( 0 == 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;
|
|
}
|
|
case VIDIOC_OVERLAY:
|
|
|
|
|
|
|
|
|
|
{
|
|
int on = *(int *)arg;
|
|
int err = 0;
|
|
|
|
DEB_D(("VIDIOC_OVERLAY on:%d\n",on));
|
|
if (on != 0) {
|
|
err = saa7146_start_preview(fh);
|
|
} else {
|
|
err = saa7146_stop_preview(fh);
|
|
}
|
|
return err;
|
|
}
|
|
case VIDIOC_REQBUFS: {
|
|
struct v4l2_requestbuffers *req = arg;
|
|
DEB_D(("VIDIOC_REQBUFS, type:%d\n",req->type));
|
|
return videobuf_reqbufs(q,req);
|
|
}
|
|
case VIDIOC_QUERYBUF: {
|
|
struct v4l2_buffer *buf = arg;
|
|
DEB_D(("VIDIOC_QUERYBUF, type:%d, offset:%d\n",buf->type,buf->m.offset));
|
|
return videobuf_querybuf(q,buf);
|
|
}
|
|
case VIDIOC_QBUF: {
|
|
struct v4l2_buffer *buf = arg;
|
|
int ret = 0;
|
|
ret = videobuf_qbuf(q,buf);
|
|
DEB_D(("VIDIOC_QBUF: ret:%d, index:%d\n",ret,buf->index));
|
|
return ret;
|
|
}
|
|
case VIDIOC_DQBUF: {
|
|
struct v4l2_buffer *buf = arg;
|
|
int ret = 0;
|
|
ret = videobuf_dqbuf(q,buf,file->f_flags & O_NONBLOCK);
|
|
DEB_D(("VIDIOC_DQBUF: ret:%d, index:%d\n",ret,buf->index));
|
|
return ret;
|
|
}
|
|
case VIDIOC_STREAMON: {
|
|
int *type = arg;
|
|
DEB_D(("VIDIOC_STREAMON, type:%d\n",*type));
|
|
|
|
err = video_begin(fh);
|
|
if( 0 != err) {
|
|
return err;
|
|
}
|
|
err = videobuf_streamon(q);
|
|
return err;
|
|
}
|
|
case VIDIOC_STREAMOFF: {
|
|
int *type = arg;
|
|
|
|
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 = videobuf_streamoff(q);
|
|
if (0 != err) {
|
|
DEB_D(("warning: videobuf_streamoff() failed.\n"));
|
|
video_end(fh, file);
|
|
} else {
|
|
err = video_end(fh, file);
|
|
}
|
|
return err;
|
|
}
|
|
case VIDIOCGMBUF:
|
|
{
|
|
struct video_mbuf *mbuf = arg;
|
|
struct videobuf_queue *q;
|
|
int i;
|
|
|
|
/* fixme: number of capture buffers and sizes for v4l apps */
|
|
int gbuffers = 2;
|
|
int gbufsize = 768*576*4;
|
|
|
|
DEB_D(("VIDIOCGMBUF \n"));
|
|
|
|
q = &fh->video_q;
|
|
down(&q->lock);
|
|
err = videobuf_mmap_setup(q,gbuffers,gbufsize,
|
|
V4L2_MEMORY_MMAP);
|
|
if (err < 0) {
|
|
up(&q->lock);
|
|
return err;
|
|
}
|
|
memset(mbuf,0,sizeof(*mbuf));
|
|
mbuf->frames = gbuffers;
|
|
mbuf->size = gbuffers * gbufsize;
|
|
for (i = 0; i < gbuffers; i++)
|
|
mbuf->offsets[i] = i * gbufsize;
|
|
up(&q->lock);
|
|
return 0;
|
|
}
|
|
default:
|
|
return v4l_compat_translate_ioctl(inode,file,cmd,arg,
|
|
saa7146_video_do_ioctl);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/*********************************************************************************/
|
|
/* 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 = STATE_ACTIVE;
|
|
saa7146_set_capture(dev,buf,next);
|
|
|
|
mod_timer(&vv->video_q.timeout, jiffies+BUFFER_TIMEOUT);
|
|
return 0;
|
|
}
|
|
|
|
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 (fh->video_fmt.width < 48 ||
|
|
fh->video_fmt.height < 32 ||
|
|
fh->video_fmt.width > vv->standard->h_max_out ||
|
|
fh->video_fmt.height > vv->standard->v_max_out) {
|
|
DEB_D(("w (%d) / h (%d) out of bounds.\n",fh->video_fmt.width,fh->video_fmt.height));
|
|
return -EINVAL;
|
|
}
|
|
|
|
size = fh->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",
|
|
fh->video_fmt.width,fh->video_fmt.height,size,v4l2_field_names[fh->video_fmt.field]));
|
|
if (buf->vb.width != fh->video_fmt.width ||
|
|
buf->vb.bytesperline != fh->video_fmt.bytesperline ||
|
|
buf->vb.height != fh->video_fmt.height ||
|
|
buf->vb.size != size ||
|
|
buf->vb.field != field ||
|
|
buf->vb.field != fh->video_fmt.field ||
|
|
buf->fmt != &fh->video_fmt) {
|
|
saa7146_dma_free(dev,buf);
|
|
}
|
|
|
|
if (STATE_NEEDS_INIT == buf->vb.state) {
|
|
struct saa7146_format *sfmt;
|
|
|
|
buf->vb.bytesperline = fh->video_fmt.bytesperline;
|
|
buf->vb.width = fh->video_fmt.width;
|
|
buf->vb.height = fh->video_fmt.height;
|
|
buf->vb.size = size;
|
|
buf->vb.field = field;
|
|
buf->fmt = &fh->video_fmt;
|
|
buf->vb.field = fh->video_fmt.field;
|
|
|
|
sfmt = format_by_fourcc(dev,buf->fmt->pixelformat);
|
|
|
|
if( 0 != IS_PLANAR(sfmt->trans)) {
|
|
saa7146_pgtable_free(dev->pci, &buf->pt[0]);
|
|
saa7146_pgtable_free(dev->pci, &buf->pt[1]);
|
|
saa7146_pgtable_free(dev->pci, &buf->pt[2]);
|
|
|
|
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_free(dev->pci, &buf->pt[0]);
|
|
saa7146_pgtable_alloc(dev->pci, &buf->pt[0]);
|
|
}
|
|
|
|
err = videobuf_iolock(dev->pci,&buf->vb, &vv->ov_fb);
|
|
if (err)
|
|
goto oops;
|
|
err = saa7146_pgtable_build(dev,buf);
|
|
if (err)
|
|
goto oops;
|
|
}
|
|
buf->vb.state = STATE_PREPARED;
|
|
buf->activate = buffer_activate;
|
|
|
|
return 0;
|
|
|
|
oops:
|
|
DEB_D(("error out.\n"));
|
|
saa7146_dma_free(dev,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;
|
|
|
|
if (0 == *count || *count > MAX_SAA7146_CAPTURE_BUFFERS)
|
|
*count = MAX_SAA7146_CAPTURE_BUFFERS;
|
|
|
|
*size = fh->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_q,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,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_q.queue);
|
|
|
|
init_timer(&vv->video_q.timeout);
|
|
vv->video_q.timeout.function = saa7146_buffer_timeout;
|
|
vv->video_q.timeout.data = (unsigned long)(&vv->video_q);
|
|
vv->video_q.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 = (struct saa7146_fh *)file->private_data;
|
|
struct saa7146_format *sfmt;
|
|
|
|
fh->video_fmt.width = 384;
|
|
fh->video_fmt.height = 288;
|
|
fh->video_fmt.pixelformat = V4L2_PIX_FMT_BGR24;
|
|
fh->video_fmt.bytesperline = 0;
|
|
fh->video_fmt.field = V4L2_FIELD_ANY;
|
|
sfmt = format_by_fourcc(dev,fh->video_fmt.pixelformat);
|
|
fh->video_fmt.sizeimage = (fh->video_fmt.width * fh->video_fmt.height * sfmt->depth)/8;
|
|
|
|
videobuf_queue_init(&fh->video_q, &video_qops,
|
|
dev->pci, &dev->slock,
|
|
V4L2_BUF_TYPE_VIDEO_CAPTURE,
|
|
V4L2_FIELD_INTERLACED,
|
|
sizeof(struct saa7146_buf),
|
|
file);
|
|
|
|
init_MUTEX(&fh->video_q.lock);
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
static void video_close(struct saa7146_dev *dev, struct file *file)
|
|
{
|
|
struct saa7146_fh *fh = (struct saa7146_fh *)file->private_data;
|
|
struct saa7146_vv *vv = dev->vv_data;
|
|
int err;
|
|
|
|
if (IS_CAPTURE_ACTIVE(fh) != 0) {
|
|
err = video_end(fh, file);
|
|
} else if (IS_OVERLAY_ACTIVE(fh) != 0) {
|
|
err = saa7146_stop_preview(fh);
|
|
}
|
|
|
|
/* hmm, why is this function declared void? */
|
|
/* return err */
|
|
}
|
|
|
|
|
|
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_q;
|
|
|
|
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,STATE_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,
|
|
};
|