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[media] sh_mobile_ceu_camera: Support user-configurable line stride

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In image mode, the CEU allows configurable line strides up to 8188
pixels.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
[g.liakhovetski@gmx.de: unify sh_mobile_ceu_set_rect() in data-fetch mode]
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Laurent Pinchart 2012-03-21 08:16:05 -03:00 committed by Mauro Carvalho Chehab
parent 914f05c811
commit fc13baff74
1 changed files with 18 additions and 15 deletions
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33
drivers/media/video/sh_mobile_ceu_camera.c
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@ -342,19 +342,15 @@ static int sh_mobile_ceu_capture(struct sh_mobile_ceu_dev *pcdev)
ceu_write(pcdev, top1, phys_addr_top);
if (V4L2_FIELD_NONE != pcdev->field) {
if (planar)
phys_addr_bottom = phys_addr_top + icd->user_width;
else
phys_addr_bottom = phys_addr_top + icd->bytesperline;
phys_addr_bottom = phys_addr_top + icd->bytesperline;
ceu_write(pcdev, bottom1, phys_addr_bottom);
}
if (planar) {
phys_addr_top += icd->user_width *
icd->user_height;
phys_addr_top += icd->bytesperline * icd->user_height;
ceu_write(pcdev, top2, phys_addr_top);
if (V4L2_FIELD_NONE != pcdev->field) {
phys_addr_bottom = phys_addr_top + icd->user_width;
phys_addr_bottom = phys_addr_top + icd->bytesperline;
ceu_write(pcdev, bottom2, phys_addr_bottom);
}
}
@ -681,10 +677,7 @@ static void sh_mobile_ceu_set_rect(struct soc_camera_device *icd)
in_width *= 2;
left_offset *= 2;
}
cdwdr_width = width;
} else {
int bytes_per_line = soc_mbus_bytes_per_line(width,
icd->current_fmt->host_fmt);
unsigned int w_factor;
switch (icd->current_fmt->host_fmt->packing) {
@ -697,13 +690,10 @@ static void sh_mobile_ceu_set_rect(struct soc_camera_device *icd)
in_width = cam->width * w_factor;
left_offset *= w_factor;
if (bytes_per_line < 0)
cdwdr_width = width;
else
cdwdr_width = bytes_per_line;
}
cdwdr_width = icd->bytesperline;
height = icd->user_height;
in_height = cam->height;
if (V4L2_FIELD_NONE != pcdev->field) {
@ -1848,6 +1838,8 @@ static int sh_mobile_ceu_set_fmt(struct soc_camera_device *icd,
return 0;
}
#define CEU_CHDW_MAX 8188U /* Maximum line stride */
static int sh_mobile_ceu_try_fmt(struct soc_camera_device *icd,
struct v4l2_format *f)
{
@ -1926,10 +1918,20 @@ static int sh_mobile_ceu_try_fmt(struct soc_camera_device *icd,
pix->width = width;
if (mf.height > height)
pix->height = height;
pix->bytesperline = max(pix->bytesperline, pix->width);
pix->bytesperline = min(pix->bytesperline, CEU_CHDW_MAX);
pix->bytesperline &= ~3;
break;
default:
/* Configurable stride isn't supported in pass-through mode. */
pix->bytesperline = 0;
}
pix->width &= ~3;
pix->height &= ~3;
pix->sizeimage = 0;
dev_geo(icd->parent, "%s(): return %d, fmt 0x%x, %ux%u\n",
__func__, ret, pix->pixelformat, pix->width, pix->height);
@ -2148,6 +2150,7 @@ static int __devinit sh_mobile_ceu_probe(struct platform_device *pdev)
pcdev->ici.nr = pdev->id;
pcdev->ici.drv_name = dev_name(&pdev->dev);
pcdev->ici.ops = &sh_mobile_ceu_host_ops;
pcdev->ici.capabilities = SOCAM_HOST_CAP_STRIDE;
pcdev->alloc_ctx = vb2_dma_contig_init_ctx(&pdev->dev);
if (IS_ERR(pcdev->alloc_ctx)) {