From ad5f2e859d76dccb7eb1aa942171b1a32211efc2 Mon Sep 17 00:00:00 2001 From: Guennadi Liakhovetski Date: Fri, 7 Mar 2008 21:57:18 -0300 Subject: V4L/DVB (7336): soc-camera: streamline hardware parameter negotiation Improve hardware parameter negotiation between the camera host driver and camera drivers. Parameters like horizontal and vertical synchronisation, pixel clock polarity shall be set depending on capabilities of the parties. Signed-off-by: Guennadi Liakhovetski Signed-off-by: Mauro Carvalho Chehab --- drivers/media/video/soc_camera.c | 49 ++++++++++++++++++++-------------------- 1 file changed, 24 insertions(+), 25 deletions(-) (limited to 'drivers/media/video/soc_camera.c') diff --git a/drivers/media/video/soc_camera.c b/drivers/media/video/soc_camera.c index 322f837bcfe..bd8677cb1ca 100644 --- a/drivers/media/video/soc_camera.c +++ b/drivers/media/video/soc_camera.c @@ -75,12 +75,13 @@ static int soc_camera_try_fmt_cap(struct file *file, void *priv, return -EINVAL; } - /* limit to host capabilities */ - ret = ici->try_fmt_cap(ici, f); + /* test physical bus parameters */ + ret = ici->try_bus_param(icd, f->fmt.pix.pixelformat); + if (ret) + return ret; - /* limit to sensor capabilities */ - if (!ret) - ret = icd->ops->try_fmt_cap(icd, f); + /* limit format to hardware capabilities */ + ret = ici->try_fmt_cap(icd, f); /* calculate missing fields */ f->fmt.pix.field = field; @@ -344,8 +345,8 @@ static int soc_camera_s_fmt_cap(struct file *file, void *priv, if (!data_fmt) return -EINVAL; - /* cached_datawidth may be further adjusted by the ici */ - icd->cached_datawidth = data_fmt->depth; + /* buswidth may be further adjusted by the ici */ + icd->buswidth = data_fmt->depth; ret = soc_camera_try_fmt_cap(file, icf, f); if (ret < 0) @@ -355,22 +356,23 @@ static int soc_camera_s_fmt_cap(struct file *file, void *priv, rect.top = icd->y_current; rect.width = f->fmt.pix.width; rect.height = f->fmt.pix.height; - ret = ici->set_capture_format(icd, f->fmt.pix.pixelformat, &rect); + ret = ici->set_fmt_cap(icd, f->fmt.pix.pixelformat, &rect); + if (ret < 0) + return ret; - if (!ret) { - icd->current_fmt = data_fmt; - icd->width = rect.width; - icd->height = rect.height; - icf->vb_vidq.field = f->fmt.pix.field; - if (V4L2_BUF_TYPE_VIDEO_CAPTURE != f->type) - dev_warn(&icd->dev, "Attention! Wrong buf-type %d\n", - f->type); - - dev_dbg(&icd->dev, "set width: %d height: %d\n", - icd->width, icd->height); - } + icd->current_fmt = data_fmt; + icd->width = rect.width; + icd->height = rect.height; + icf->vb_vidq.field = f->fmt.pix.field; + if (V4L2_BUF_TYPE_VIDEO_CAPTURE != f->type) + dev_warn(&icd->dev, "Attention! Wrong buf-type %d\n", + f->type); - return ret; + dev_dbg(&icd->dev, "set width: %d height: %d\n", + icd->width, icd->height); + + /* set physical bus parameters */ + return ici->set_bus_param(icd, f->fmt.pix.pixelformat); } static int soc_camera_enum_fmt_cap(struct file *file, void *priv, @@ -577,7 +579,7 @@ static int soc_camera_s_crop(struct file *file, void *fh, if (a->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) return -EINVAL; - ret = ici->set_capture_format(icd, 0, &a->c); + ret = ici->set_fmt_cap(icd, 0, &a->c); if (!ret) { icd->width = a->c.width; icd->height = a->c.height; @@ -860,9 +862,6 @@ int soc_camera_device_register(struct soc_camera_device *icd) icd->dev.release = dummy_release; - if (icd->ops->get_datawidth) - icd->cached_datawidth = icd->ops->get_datawidth(icd); - return scan_add_device(icd); } EXPORT_SYMBOL(soc_camera_device_register); -- cgit v1.2.3