From 3dc2046ca78b3cac6c8c9098a4e3024cd91abdb4 Mon Sep 17 00:00:00 2001 From: Benoit Parrot Date: Mon, 13 Feb 2017 11:06:58 -0200 Subject: [PATCH] [media] media: ti-vpe: vpe: allow use of user specified stride Bytesperline/stride was always overwritten by VPE to the most adequate value based on needed alignment. However in order to make use of arbitrary size DMA buffer it is better to use the user space provide stride instead. The driver will still calculate an appropriate stride but will use the provided one when it is larger than the calculated one. Signed-off-by: Benoit Parrot Signed-off-by: Mauro Carvalho Chehab --- drivers/media/platform/ti-vpe/vpe.c | 28 ++++++++++++++++++++-------- 1 file changed, 20 insertions(+), 8 deletions(-) diff --git a/drivers/media/platform/ti-vpe/vpe.c b/drivers/media/platform/ti-vpe/vpe.c index 2dd67232b3bc..c47151495b6f 100644 --- a/drivers/media/platform/ti-vpe/vpe.c +++ b/drivers/media/platform/ti-vpe/vpe.c @@ -1597,6 +1597,7 @@ static int __vpe_try_fmt(struct vpe_ctx *ctx, struct v4l2_format *f, struct v4l2_plane_pix_format *plane_fmt; unsigned int w_align; int i, depth, depth_bytes, height; + unsigned int stride = 0; if (!fmt || !(fmt->types & type)) { vpe_err(ctx->dev, "Fourcc format (0x%08x) invalid.\n", @@ -1683,16 +1684,27 @@ static int __vpe_try_fmt(struct vpe_ctx *ctx, struct v4l2_format *f, plane_fmt = &pix->plane_fmt[i]; depth = fmt->vpdma_fmt[i]->depth; - if (i == VPE_LUMA) - plane_fmt->bytesperline = (pix->width * depth) >> 3; - else - plane_fmt->bytesperline = pix->width; + stride = (pix->width * fmt->vpdma_fmt[VPE_LUMA]->depth) >> 3; + if (stride > plane_fmt->bytesperline) + plane_fmt->bytesperline = stride; + + plane_fmt->bytesperline = ALIGN(plane_fmt->bytesperline, + VPDMA_STRIDE_ALIGN); - if (pix->num_planes == 1 && fmt->coplanar) - depth += fmt->vpdma_fmt[VPE_CHROMA]->depth; - plane_fmt->sizeimage = - (pix->height * pix->width * depth) >> 3; + if (i == VPE_LUMA) { + plane_fmt->sizeimage = pix->height * + plane_fmt->bytesperline; + if (pix->num_planes == 1 && fmt->coplanar) + plane_fmt->sizeimage += pix->height * + plane_fmt->bytesperline * + fmt->vpdma_fmt[VPE_CHROMA]->depth >> 3; + + } else { /* i == VIP_CHROMA */ + plane_fmt->sizeimage = (pix->height * + plane_fmt->bytesperline * + depth) >> 3; + } memset(plane_fmt->reserved, 0, sizeof(plane_fmt->reserved)); } -- 2.39.5