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media: vsp1: Fix YCbCr planar formats pitch calculation

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YCbCr planar formats can have different pitch values for the luma and
chroma planes. This isn't taken into account in the driver. Fix it.

Based on a BSP patch from Koji Matsuoka <koji.matsuoka.xm@renesas.com>.

Fixes: 7863ac504b ("drm: rcar-du: Add tri-planar memory formats support")
[Updated documentation of the struct vsp1_du_atomic_config pitch field]

Signed-off-by: Koji Matsuoka <koji.matsuoka.xm@renesas.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Reviewed-by: Kieran Bingham <kieran.bingham+renesas@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
This commit is contained in:
Koji Matsuoka 2017-10-26 02:27:51 -04:00 committed by Mauro Carvalho Chehab
parent de2bc45c84
commit 9b2798d5b7
2 changed files with 11 additions and 2 deletions
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11
drivers/media/platform/vsp1/vsp1_drm.c
View file

@ -770,6 +770,7 @@ int vsp1_du_atomic_update(struct device *dev, unsigned int pipe_index,
struct vsp1_device *vsp1 = dev_get_drvdata(dev);
struct vsp1_drm_pipeline *drm_pipe = &vsp1->drm->pipe[pipe_index];
const struct vsp1_format_info *fmtinfo;
unsigned int chroma_hsub;
struct vsp1_rwpf *rpf;
if (rpf_index >= vsp1->info->rpf_count)
@ -810,10 +811,18 @@ int vsp1_du_atomic_update(struct device *dev, unsigned int pipe_index,
return -EINVAL;
}
/*
* Only formats with three planes can affect the chroma planes pitch.
* All formats with two planes have a horizontal subsampling value of 2,
* but combine U and V in a single chroma plane, which thus results in
* the luma plane and chroma plane having the same pitch.
*/
chroma_hsub = (fmtinfo->planes == 3) ? fmtinfo->hsub : 1;
rpf->fmtinfo = fmtinfo;
rpf->format.num_planes = fmtinfo->planes;
rpf->format.plane_fmt[0].bytesperline = cfg->pitch;
rpf->format.plane_fmt[1].bytesperline = cfg->pitch;
rpf->format.plane_fmt[1].bytesperline = cfg->pitch / chroma_hsub;
rpf->alpha = cfg->alpha;
rpf->mem.addr[0] = cfg->mem[0];

2
include/media/vsp1.h
View file

@ -42,7 +42,7 @@ int vsp1_du_setup_lif(struct device *dev, unsigned int pipe_index,
/**
* struct vsp1_du_atomic_config - VSP atomic configuration parameters
* @pixelformat: plane pixel format (V4L2 4CC)
* @pitch: line pitch in bytes, for all planes
* @pitch: line pitch in bytes for the first plane
* @mem: DMA memory address for each plane of the frame buffer
* @src: source rectangle in the frame buffer (integer coordinates)
* @dst: destination rectangle on the display (integer coordinates)