// SPDX-License-Identifier: GPL-2.0-only
/* Copyright (c) 2015-2018, The Linux Foundation. All rights reserved.
*/
#define pr_fmt(fmt) "[drm:%s:%d] " fmt, __func__, __LINE__
#include <uapi/drm/drm_fourcc.h>
#include <drm/drm_framebuffer.h>
#include "msm_media_info.h"
#include "dpu_kms.h"
#include "dpu_formats.h"
#define DPU_UBWC_PLANE_SIZE_ALIGNMENT 4096
/*
* struct dpu_media_color_map - maps drm format to media format
* @ format : DRM base pixel format
* @ color : Media API color related to DRM format
*/
struct dpu_media_color_map {
uint32_t format;
uint32_t color;
};
/* _dpu_get_v_h_subsample_rate - Get subsample rates for all formats we support
* Note : Not using the drm_format_ * _ subsampling since we have formats
*/
static void _dpu_get_v_h_subsample_rate(
enum mdp_chroma_samp_type chroma_sample,
uint32_t *v_sample,
uint32_t *h_sample)
{
if (!v_sample || !h_sample)
return ;
switch (chroma_sample) {
case CHROMA_H2V1:
*v_sample = 1 ;
*h_sample = 2 ;
break ;
case CHROMA_H1V2:
*v_sample = 2 ;
*h_sample = 1 ;
break ;
case CHROMA_420:
*v_sample = 2 ;
*h_sample = 2 ;
break ;
default :
*v_sample = 1 ;
*h_sample = 1 ;
break ;
}
}
static int _dpu_format_get_media_color_ubwc(const struct msm_format *fmt)
{
static const struct dpu_media_color_map dpu_media_ubwc_map[] = {
{DRM_FORMAT_ABGR8888, COLOR_FMT_RGBA8888_UBWC},
{DRM_FORMAT_ARGB8888, COLOR_FMT_RGBA8888_UBWC},
{DRM_FORMAT_XBGR8888, COLOR_FMT_RGBA8888_UBWC},
{DRM_FORMAT_XRGB8888, COLOR_FMT_RGBA8888_UBWC},
{DRM_FORMAT_ABGR2101010, COLOR_FMT_RGBA1010102_UBWC},
{DRM_FORMAT_ARGB2101010, COLOR_FMT_RGBA1010102_UBWC},
{DRM_FORMAT_XRGB2101010, COLOR_FMT_RGBA1010102_UBWC},
{DRM_FORMAT_XBGR2101010, COLOR_FMT_RGBA1010102_UBWC},
{DRM_FORMAT_BGR565, COLOR_FMT_RGB565_UBWC},
};
int color_fmt = -1 ;
int i;
if (fmt->pixel_format == DRM_FORMAT_NV12 ||
fmt->pixel_format == DRM_FORMAT_P010) {
if (MSM_FORMAT_IS_DX(fmt)) {
if (fmt->flags & MSM_FORMAT_FLAG_UNPACK_TIGHT)
color_fmt = COLOR_FMT_NV12_BPP10_UBWC;
else
color_fmt = COLOR_FMT_P010_UBWC;
} else
color_fmt = COLOR_FMT_NV12_UBWC;
return color_fmt;
}
for (i = 0 ; i < ARRAY_SIZE(dpu_media_ubwc_map); ++i)
if (fmt->pixel_format == dpu_media_ubwc_map[i].format) {
color_fmt = dpu_media_ubwc_map[i].color;
break ;
}
return color_fmt;
}
static int _dpu_format_populate_plane_sizes_ubwc(
const struct msm_format *fmt,
struct drm_framebuffer *fb,
struct dpu_hw_fmt_layout *layout)
{
int i;
int color;
bool meta = MSM_FORMAT_IS_UBWC(fmt);
memset(layout, 0 , sizeof (struct dpu_hw_fmt_layout));
layout->width = fb->width;
layout->height = fb->height;
layout->num_planes = fmt->num_planes;
color = _dpu_format_get_media_color_ubwc(fmt);
if (color < 0 ) {
DRM_ERROR("UBWC format not supported for fmt: %p4cc\n" ,
&fmt->pixel_format);
return -EINVAL;
}
if (MSM_FORMAT_IS_YUV(fmt)) {
uint32_t y_sclines, uv_sclines;
uint32_t y_meta_scanlines = 0 ;
uint32_t uv_meta_scanlines = 0 ;
layout->num_planes = 2 ;
layout->plane_pitch[0 ] = VENUS_Y_STRIDE(color, fb->width);
y_sclines = VENUS_Y_SCANLINES(color, fb->height);
layout->plane_size[0 ] = MSM_MEDIA_ALIGN(layout->plane_pitch[0 ] *
y_sclines, DPU_UBWC_PLANE_SIZE_ALIGNMENT);
layout->plane_pitch[1 ] = VENUS_UV_STRIDE(color, fb->width);
uv_sclines = VENUS_UV_SCANLINES(color, fb->height);
layout->plane_size[1 ] = MSM_MEDIA_ALIGN(layout->plane_pitch[1 ] *
uv_sclines, DPU_UBWC_PLANE_SIZE_ALIGNMENT);
if (!meta)
goto done;
layout->num_planes += 2 ;
layout->plane_pitch[2 ] = VENUS_Y_META_STRIDE(color, fb->width);
y_meta_scanlines = VENUS_Y_META_SCANLINES(color, fb->height);
layout->plane_size[2 ] = MSM_MEDIA_ALIGN(layout->plane_pitch[2 ] *
y_meta_scanlines, DPU_UBWC_PLANE_SIZE_ALIGNMENT);
layout->plane_pitch[3 ] = VENUS_UV_META_STRIDE(color, fb->width);
uv_meta_scanlines = VENUS_UV_META_SCANLINES(color, fb->height);
layout->plane_size[3 ] = MSM_MEDIA_ALIGN(layout->plane_pitch[3 ] *
uv_meta_scanlines, DPU_UBWC_PLANE_SIZE_ALIGNMENT);
} else {
uint32_t rgb_scanlines, rgb_meta_scanlines;
layout->num_planes = 1 ;
layout->plane_pitch[0 ] = VENUS_RGB_STRIDE(color, fb->width);
rgb_scanlines = VENUS_RGB_SCANLINES(color, fb->height);
layout->plane_size[0 ] = MSM_MEDIA_ALIGN(layout->plane_pitch[0 ] *
rgb_scanlines, DPU_UBWC_PLANE_SIZE_ALIGNMENT);
if (!meta)
goto done;
layout->num_planes += 2 ;
layout->plane_pitch[2 ] = VENUS_RGB_META_STRIDE(color, fb->width);
rgb_meta_scanlines = VENUS_RGB_META_SCANLINES(color, fb->height);
layout->plane_size[2 ] = MSM_MEDIA_ALIGN(layout->plane_pitch[2 ] *
rgb_meta_scanlines, DPU_UBWC_PLANE_SIZE_ALIGNMENT);
}
done:
for (i = 0 ; i < DPU_MAX_PLANES; i++)
layout->total_size += layout->plane_size[i];
return 0 ;
}
static int _dpu_format_populate_plane_sizes_linear(
const struct msm_format *fmt,
struct drm_framebuffer *fb,
struct dpu_hw_fmt_layout *layout)
{
int i;
memset(layout, 0 , sizeof (struct dpu_hw_fmt_layout));
layout->width = fb->width;
layout->height = fb->height;
layout->num_planes = fmt->num_planes;
/* Due to memset above, only need to set planes of interest */
if (fmt->fetch_type == MDP_PLANE_INTERLEAVED) {
layout->num_planes = 1 ;
layout->plane_size[0 ] = fb->width * fb->height * fmt->bpp;
layout->plane_pitch[0 ] = fb->width * fmt->bpp;
} else {
uint32_t v_subsample, h_subsample;
uint32_t chroma_samp;
uint32_t bpp = 1 ;
chroma_samp = fmt->chroma_sample;
_dpu_get_v_h_subsample_rate(chroma_samp, &v_subsample,
&h_subsample);
if (fb->width % h_subsample || fb->height % v_subsample) {
DRM_ERROR("mismatch in subsample vs dimensions\n" );
return -EINVAL;
}
if ((fmt->pixel_format == DRM_FORMAT_NV12) &&
(MSM_FORMAT_IS_DX(fmt)))
bpp = 2 ;
layout->plane_pitch[0 ] = fb->width * bpp;
layout->plane_pitch[1 ] = layout->plane_pitch[0 ] / h_subsample;
layout->plane_size[0 ] = layout->plane_pitch[0 ] * fb->height;
layout->plane_size[1 ] = layout->plane_pitch[1 ] *
(fb->height / v_subsample);
if (fmt->fetch_type == MDP_PLANE_PSEUDO_PLANAR) {
layout->num_planes = 2 ;
layout->plane_size[1 ] *= 2 ;
layout->plane_pitch[1 ] *= 2 ;
} else {
/* planar */
layout->num_planes = 3 ;
layout->plane_size[2 ] = layout->plane_size[1 ];
layout->plane_pitch[2 ] = layout->plane_pitch[1 ];
}
}
/*
* linear format : allow user allocated pitches if they are greater than
* the requirement .
* ubwc format : pitch values are computed uniformly across
* all the components based on ubwc specifications .
*/
for (i = 0 ; i < layout->num_planes && i < DPU_MAX_PLANES; ++i) {
if (layout->plane_pitch[i] <= fb->pitches[i]) {
layout->plane_pitch[i] = fb->pitches[i];
} else {
DRM_DEBUG("plane %u expected pitch %u, fb %u\n" ,
i, layout->plane_pitch[i], fb->pitches[i]);
return -EINVAL;
}
}
for (i = 0 ; i < DPU_MAX_PLANES; i++)
layout->total_size += layout->plane_size[i];
return 0 ;
}
/**
* dpu_format_populate_plane_sizes - populate non - address part of the layout based on
* fb , and format found in the fb
* @ fb : framebuffer pointer
* @ layout : format layout structure to populate
*
* Return : error code on failure or 0 if new addresses were populated
*/
int dpu_format_populate_plane_sizes(
struct drm_framebuffer *fb,
struct dpu_hw_fmt_layout *layout)
{
const struct msm_format *fmt;
if (!layout || !fb) {
DRM_ERROR("invalid pointer\n" );
return -EINVAL;
}
if (fb->width > DPU_MAX_IMG_WIDTH ||
fb->height > DPU_MAX_IMG_HEIGHT) {
DRM_ERROR("image dimensions outside max range\n" );
return -ERANGE;
}
fmt = msm_framebuffer_format(fb);
if (MSM_FORMAT_IS_UBWC(fmt) || MSM_FORMAT_IS_TILE(fmt))
return _dpu_format_populate_plane_sizes_ubwc(fmt, fb, layout);
return _dpu_format_populate_plane_sizes_linear(fmt, fb, layout);
}
static void _dpu_format_populate_addrs_ubwc(struct drm_framebuffer *fb,
struct dpu_hw_fmt_layout *layout)
{
const struct msm_format *fmt;
uint32_t base_addr = 0 ;
bool meta;
base_addr = msm_framebuffer_iova(fb, 0 );
fmt = msm_framebuffer_format(fb);
meta = MSM_FORMAT_IS_UBWC(fmt);
/* Per-format logic for verifying active planes */
if (MSM_FORMAT_IS_YUV(fmt)) {
/************************************************/
/* UBWC ** */
/* buffer ** DPU PLANE */
/* format ** */
/************************************************/
/* ------------------- ** -------------------- */
/* | Y meta | ** | Y bitstream | */
/* | data | ** | plane | */
/* ------------------- ** -------------------- */
/* | Y bitstream | ** | CbCr bitstream | */
/* | data | ** | plane | */
/* ------------------- ** -------------------- */
/* | Cbcr metadata | ** | Y meta | */
/* | data | ** | plane | */
/* ------------------- ** -------------------- */
/* | CbCr bitstream | ** | CbCr meta | */
/* | data | ** | plane | */
/* ------------------- ** -------------------- */
/************************************************/
/* configure Y bitstream plane */
layout->plane_addr[0 ] = base_addr + layout->plane_size[2 ];
/* configure CbCr bitstream plane */
layout->plane_addr[1 ] = base_addr + layout->plane_size[0 ]
+ layout->plane_size[2 ] + layout->plane_size[3 ];
if (!meta)
return ;
/* configure Y metadata plane */
layout->plane_addr[2 ] = base_addr;
/* configure CbCr metadata plane */
layout->plane_addr[3 ] = base_addr + layout->plane_size[0 ]
+ layout->plane_size[2 ];
} else {
/************************************************/
/* UBWC ** */
/* buffer ** DPU PLANE */
/* format ** */
/************************************************/
/* ------------------- ** -------------------- */
/* | RGB meta | ** | RGB bitstream | */
/* | data | ** | plane | */
/* ------------------- ** -------------------- */
/* | RGB bitstream | ** | NONE | */
/* | data | ** | | */
/* ------------------- ** -------------------- */
/* ** | RGB meta | */
/* ** | plane | */
/* ** -------------------- */
/************************************************/
layout->plane_addr[0 ] = base_addr + layout->plane_size[2 ];
layout->plane_addr[1 ] = 0 ;
if (!meta)
return ;
layout->plane_addr[2 ] = base_addr;
layout->plane_addr[3 ] = 0 ;
}
}
static void _dpu_format_populate_addrs_linear(struct drm_framebuffer *fb,
struct dpu_hw_fmt_layout *layout)
{
unsigned int i;
/* Populate addresses for simple formats here */
for (i = 0 ; i < layout->num_planes; ++i)
layout->plane_addr[i] = msm_framebuffer_iova(fb, i);
}
/**
* dpu_format_populate_addrs - populate buffer addresses based on
* mmu , fb , and format found in the fb
* @ fb : framebuffer pointer
* @ layout : format layout structure to populate
*/
void dpu_format_populate_addrs(struct drm_framebuffer *fb,
struct dpu_hw_fmt_layout *layout)
{
const struct msm_format *fmt;
fmt = msm_framebuffer_format(fb);
/* Populate the addresses given the fb */
if (MSM_FORMAT_IS_UBWC(fmt) ||
MSM_FORMAT_IS_TILE(fmt))
_dpu_format_populate_addrs_ubwc(fb, layout);
else
_dpu_format_populate_addrs_linear(fb, layout);
}
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(vorverarbeitet am 2026-10-05)
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