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Message-ID: <c2d810bc-bdba-464b-9a05-49ca2e1c773b@oss.qualcomm.com>
Date: Thu, 4 Sep 2025 11:38:16 -0700
From: Jessica Zhang <jessica.zhang@....qualcomm.com>
To: Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>,
Rob Clark <robin.clark@....qualcomm.com>,
Dmitry Baryshkov
<lumag@...nel.org>,
Abhinav Kumar <abhinav.kumar@...ux.dev>, Sean Paul <sean@...rly.run>,
Marijn Suijten <marijn.suijten@...ainline.org>,
David Airlie <airlied@...il.com>, Simona Vetter <simona@...ll.ch>,
Jordan Crouse <jordan@...micpenguin.net>
Cc: linux-arm-msm@...r.kernel.org, dri-devel@...ts.freedesktop.org,
freedreno@...ts.freedesktop.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 12/12] drm/msm/dpu: use standard functions in
_dpu_format_populate_plane_sizes_ubwc()
On 7/4/2025 7:47 PM, Dmitry Baryshkov wrote:
> The _dpu_format_populate_plane_sizes_ubwc() used MSM_MEDIA_ALIGN() and
> MSM_MEDIA_ROUNDUP(), macros inherited from the previous implementation,
> msm_media_info.h. Replace them with the standard Linux macros,
> round_up() and DIV_ROUND_UP() respectively.
>
> Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>
> ---
> drivers/gpu/drm/msm/disp/dpu1/dpu_formats.c | 62 ++++++++++++-----------------
> 1 file changed, 26 insertions(+), 36 deletions(-)
>
> diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_formats.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_formats.c
> index 67bc5a6eeb43dcf113dea9eccdb778cd52b1ad40..6a0426ed1460c5af4822844d7a7b0c51739df875 100644
> --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_formats.c
> +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_formats.c
> @@ -10,16 +10,6 @@
> #include "dpu_kms.h"
> #include "dpu_formats.h"
>
> -#ifndef MSM_MEDIA_ALIGN
> -#define MSM_MEDIA_ALIGN(__sz, __align) (((__align) & ((__align) - 1)) ?\
> - ((((__sz) + (__align) - 1) / (__align)) * (__align)) :\
> - (((__sz) + (__align) - 1) & (~((__align) - 1))))
> -#endif
> -
> -#ifndef MSM_MEDIA_ROUNDUP
> -#define MSM_MEDIA_ROUNDUP(__sz, __r) (((__sz) + ((__r) - 1)) / (__r))
> -#endif
> -
> #define DPU_UBWC_PLANE_SIZE_ALIGNMENT 4096
>
> /*
> @@ -80,57 +70,57 @@ static int _dpu_format_populate_plane_sizes_ubwc(
> fmt->pixel_format == DRM_FORMAT_P010) {
> if (MSM_FORMAT_IS_DX(fmt)) {
> if (fmt->flags & MSM_FORMAT_FLAG_UNPACK_TIGHT) {
> - stride = MSM_MEDIA_ALIGN(fb->width, 192);
> - stride = MSM_MEDIA_ALIGN(stride * 4 / 3, 256);
> + stride = round_up(fb->width, 192);
Hi Dmitry,
It seems like the usage of round_up() here might be incorrect -- the
docs say "round up to next specified power of 2".
Maybe we should use roundup() instead here?
The rest of the patch LGTM.
Thanks,
Jessica Zhang
> + stride = round_up(stride * 4 / 3, 256);
> y_tile_width = 48;
> } else {
> - stride = MSM_MEDIA_ALIGN(fb->width * 2, 256);
> + stride = round_up(fb->width * 2, 256);
> y_tile_width = 32;
> }
>
> - sclines = MSM_MEDIA_ALIGN(fb->height, 16);
> + sclines = round_up(fb->height, 16);
> y_tile_height = 4;
> } else {
> - stride = MSM_MEDIA_ALIGN(fb->width, 128);
> + stride = round_up(fb->width, 128);
> y_tile_width = 32;
>
> - sclines = MSM_MEDIA_ALIGN(fb->height, 32);
> + sclines = round_up(fb->height, 32);
> y_tile_height = 8;
> }
> }
>
> layout->plane_pitch[0] = stride;
> - layout->plane_size[0] = MSM_MEDIA_ALIGN(layout->plane_pitch[0] *
> + layout->plane_size[0] = round_up(layout->plane_pitch[0] *
> sclines, DPU_UBWC_PLANE_SIZE_ALIGNMENT);
>
> layout->plane_pitch[1] = stride;
> - layout->plane_size[1] = MSM_MEDIA_ALIGN(layout->plane_pitch[1] *
> + layout->plane_size[1] = round_up(layout->plane_pitch[1] *
> sclines, DPU_UBWC_PLANE_SIZE_ALIGNMENT);
>
> if (!meta)
> return 0;
>
> - y_meta_stride = MSM_MEDIA_ROUNDUP(fb->width, y_tile_width);
> - layout->plane_pitch[2] = MSM_MEDIA_ALIGN(y_meta_stride, 64);
> + y_meta_stride = DIV_ROUND_UP(fb->width, y_tile_width);
> + layout->plane_pitch[2] = round_up(y_meta_stride, 64);
>
> - y_meta_scanlines = MSM_MEDIA_ROUNDUP(fb->height, y_tile_height);
> - y_meta_scanlines = MSM_MEDIA_ALIGN(y_meta_scanlines, 16);
> - layout->plane_size[2] = MSM_MEDIA_ALIGN(layout->plane_pitch[2] *
> + y_meta_scanlines = DIV_ROUND_UP(fb->height, y_tile_height);
> + y_meta_scanlines = round_up(y_meta_scanlines, 16);
> + layout->plane_size[2] = round_up(layout->plane_pitch[2] *
> y_meta_scanlines, DPU_UBWC_PLANE_SIZE_ALIGNMENT);
>
> - uv_meta_stride = MSM_MEDIA_ROUNDUP((fb->width+1)>>1, y_tile_width / 2);
> - layout->plane_pitch[3] = MSM_MEDIA_ALIGN(uv_meta_stride, 64);
> + uv_meta_stride = DIV_ROUND_UP((fb->width+1)>>1, y_tile_width / 2);
> + layout->plane_pitch[3] = round_up(uv_meta_stride, 64);
>
> - uv_meta_scanlines = MSM_MEDIA_ROUNDUP((fb->height+1)>>1, y_tile_height);
> - uv_meta_scanlines = MSM_MEDIA_ALIGN(uv_meta_scanlines, 16);
> - layout->plane_size[3] = MSM_MEDIA_ALIGN(layout->plane_pitch[3] *
> + uv_meta_scanlines = DIV_ROUND_UP((fb->height+1)>>1, y_tile_height);
> + uv_meta_scanlines = round_up(uv_meta_scanlines, 16);
> + layout->plane_size[3] = round_up(layout->plane_pitch[3] *
> uv_meta_scanlines, DPU_UBWC_PLANE_SIZE_ALIGNMENT);
> } else {
> unsigned int rgb_scanlines, rgb_meta_scanlines, rgb_meta_stride;
>
> - layout->plane_pitch[0] = MSM_MEDIA_ALIGN(fb->width * fmt->bpp, 256);
> - rgb_scanlines = MSM_MEDIA_ALIGN(fb->height, 16);
> - layout->plane_size[0] = MSM_MEDIA_ALIGN(layout->plane_pitch[0] *
> + layout->plane_pitch[0] = round_up(fb->width * fmt->bpp, 256);
> + rgb_scanlines = round_up(fb->height, 16);
> + layout->plane_size[0] = round_up(layout->plane_pitch[0] *
> rgb_scanlines, DPU_UBWC_PLANE_SIZE_ALIGNMENT);
>
> if (!meta)
> @@ -139,13 +129,13 @@ static int _dpu_format_populate_plane_sizes_ubwc(
> /* uAPI leaves plane[1] empty and plane[2] as meta */
> layout->num_planes += 1;
>
> - rgb_meta_stride = MSM_MEDIA_ROUNDUP(fb->width, 16);
> - layout->plane_pitch[2] = MSM_MEDIA_ALIGN(rgb_meta_stride, 64);
> + rgb_meta_stride = DIV_ROUND_UP(fb->width, 16);
> + layout->plane_pitch[2] = round_up(rgb_meta_stride, 64);
>
> - rgb_meta_scanlines = MSM_MEDIA_ROUNDUP(fb->height, 4);
> - rgb_meta_scanlines = MSM_MEDIA_ALIGN(rgb_meta_scanlines, 16);
> + rgb_meta_scanlines = DIV_ROUND_UP(fb->height, 4);
> + rgb_meta_scanlines = round_up(rgb_meta_scanlines, 16);
>
> - layout->plane_size[2] = MSM_MEDIA_ALIGN(layout->plane_pitch[2] *
> + layout->plane_size[2] = round_up(layout->plane_pitch[2] *
> rgb_meta_scanlines, DPU_UBWC_PLANE_SIZE_ALIGNMENT);
> }
>
>
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