From: Russell King <rmk+kernel@xxxxxxxxxxxxxxx> Add support for enumerating frame sizes and frame intervals from the first subdev via the V4L2 interfaces. Signed-off-by: Russell King <rmk+kernel@xxxxxxxxxxxxxxx> Signed-off-by: Steve Longerbeam <steve_longerbeam@xxxxxxxxxx> --- drivers/staging/media/imx/imx-media-capture.c | 73 +++++++++++++++++++++++++++ 1 file changed, 73 insertions(+) diff --git a/drivers/staging/media/imx/imx-media-capture.c b/drivers/staging/media/imx/imx-media-capture.c index 76c17d9..8b28dbc 100644 --- a/drivers/staging/media/imx/imx-media-capture.c +++ b/drivers/staging/media/imx/imx-media-capture.c @@ -81,6 +81,76 @@ static int vidioc_querycap(struct file *file, void *fh, return 0; } +static int capture_enum_framesizes(struct file *file, void *fh, + struct v4l2_frmsizeenum *fsize) +{ + struct capture_priv *priv = video_drvdata(file); + const struct imx_media_pixfmt *cc; + struct v4l2_subdev_frame_size_enum fse = { + .index = fsize->index, + .pad = priv->src_sd_pad, + .which = V4L2_SUBDEV_FORMAT_ACTIVE, + }; + int ret; + + cc = imx_media_find_format(fsize->pixel_format, CS_SEL_ANY, true); + if (!cc) + return -EINVAL; + + fse.code = cc->codes[0]; + + ret = v4l2_subdev_call(priv->src_sd, pad, enum_frame_size, NULL, &fse); + if (ret) + return ret; + + if (fse.min_width == fse.max_width && + fse.min_height == fse.max_height) { + fsize->type = V4L2_FRMSIZE_TYPE_DISCRETE; + fsize->discrete.width = fse.min_width; + fsize->discrete.height = fse.min_height; + } else { + fsize->type = V4L2_FRMSIZE_TYPE_CONTINUOUS; + fsize->stepwise.min_width = fse.min_width; + fsize->stepwise.max_width = fse.max_width; + fsize->stepwise.min_height = fse.min_height; + fsize->stepwise.max_height = fse.max_height; + fsize->stepwise.step_width = 1; + fsize->stepwise.step_height = 1; + } + + return 0; +} + +static int capture_enum_frameintervals(struct file *file, void *fh, + struct v4l2_frmivalenum *fival) +{ + struct capture_priv *priv = video_drvdata(file); + const struct imx_media_pixfmt *cc; + struct v4l2_subdev_frame_interval_enum fie = { + .index = fival->index, + .pad = priv->src_sd_pad, + .width = fival->width, + .height = fival->height, + .which = V4L2_SUBDEV_FORMAT_ACTIVE, + }; + int ret; + + cc = imx_media_find_format(fival->pixel_format, CS_SEL_ANY, true); + if (!cc) + return -EINVAL; + + fie.code = cc->codes[0]; + + ret = v4l2_subdev_call(priv->src_sd, pad, enum_frame_interval, NULL, &fie); + if (ret) + return ret; + + fival->type = V4L2_FRMIVAL_TYPE_DISCRETE; + fival->discrete = fie.interval; + + return 0; +} + static int capture_enum_fmt_vid_cap(struct file *file, void *fh, struct v4l2_fmtdesc *f) { @@ -269,6 +339,9 @@ static int capture_s_parm(struct file *file, void *fh, static const struct v4l2_ioctl_ops capture_ioctl_ops = { .vidioc_querycap = vidioc_querycap, + .vidioc_enum_framesizes = capture_enum_framesizes, + .vidioc_enum_frameintervals = capture_enum_frameintervals, + .vidioc_enum_fmt_vid_cap = capture_enum_fmt_vid_cap, .vidioc_g_fmt_vid_cap = capture_g_fmt_vid_cap, .vidioc_try_fmt_vid_cap = capture_try_fmt_vid_cap, -- 2.7.4 -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html