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// SPDX-License-Identifier: GPL-2.0
/*
* (C) COPYRIGHT 2018 ARM Limited. All rights reserved.
* Author: James.Qian.Wang <james.qian.wang@arm.com>
*
*/
#include <linux/slab.h>
#include "komeda_format_caps.h"
#include "malidp_utils.h"
const struct komeda_format_caps *
komeda_get_format_caps(struct komeda_format_caps_table *table,
u32 fourcc, u64 modifier)
{
const struct komeda_format_caps *caps;
u64 afbc_features = modifier & ~(AFBC_FORMAT_MOD_BLOCK_SIZE_MASK);
u32 afbc_layout = modifier & AFBC_FORMAT_MOD_BLOCK_SIZE_MASK;
int id;
for (id = 0; id < table->n_formats; id++) {
caps = &table->format_caps[id];
if (fourcc != caps->fourcc)
continue;
if ((modifier == 0ULL) && (caps->supported_afbc_layouts == 0))
return caps;
if (has_bits(afbc_features, caps->supported_afbc_features) &&
has_bit(afbc_layout, caps->supported_afbc_layouts))
return caps;
}
return NULL;
}
u32 komeda_get_afbc_format_bpp(const struct drm_format_info *info, u64 modifier)
{
u32 bpp;
switch (info->format) {
case DRM_FORMAT_YUV420_8BIT:
bpp = 12;
break;
case DRM_FORMAT_YUV420_10BIT:
bpp = 15;
break;
default:
bpp = info->cpp[0] * 8;
break;
}
return bpp;
}
/* Two assumptions
* 1. RGB always has YTR
* 2. Tiled RGB always has SC
*/
u64 komeda_supported_modifiers[] = {
/* AFBC_16x16 + features: YUV+RGB both */
AFBC_16x16(0),
/* SPARSE */
AFBC_16x16(_SPARSE),
/* YTR + (SPARSE) */
AFBC_16x16(_YTR | _SPARSE),
AFBC_16x16(_YTR),
/* SPLIT + SPARSE + YTR RGB only */
/* split mode is only allowed for sparse mode */
AFBC_16x16(_SPLIT | _SPARSE | _YTR),
/* TILED + (SPARSE) */
/* TILED YUV format only */
AFBC_16x16(_TILED | _SPARSE),
AFBC_16x16(_TILED),
/* TILED + SC + (SPLIT+SPARSE | SPARSE) + (YTR) */
AFBC_16x16(_TILED | _SC | _SPLIT | _SPARSE | _YTR),
AFBC_16x16(_TILED | _SC | _SPARSE | _YTR),
AFBC_16x16(_TILED | _SC | _YTR),
/* AFBC_32x8 + features: which are RGB formats only */
/* YTR + (SPARSE) */
AFBC_32x8(_YTR | _SPARSE),
AFBC_32x8(_YTR),
/* SPLIT + SPARSE + (YTR) */
/* split mode is only allowed for sparse mode */
AFBC_32x8(_SPLIT | _SPARSE | _YTR),
/* TILED + SC + (SPLIT+SPARSE | SPARSE) + YTR */
AFBC_32x8(_TILED | _SC | _SPLIT | _SPARSE | _YTR),
AFBC_32x8(_TILED | _SC | _SPARSE | _YTR),
AFBC_32x8(_TILED | _SC | _YTR),
DRM_FORMAT_MOD_LINEAR,
DRM_FORMAT_MOD_INVALID
};
bool komeda_format_mod_supported(struct komeda_format_caps_table *table,
u32 layer_type, u32 fourcc, u64 modifier,
u32 rot)
{
const struct komeda_format_caps *caps;
caps = komeda_get_format_caps(table, fourcc, modifier);
if (!caps)
return false;
if (!(caps->supported_layer_types & layer_type))
return false;
if (table->format_mod_supported)
return table->format_mod_supported(caps, layer_type, modifier,
rot);
return true;
}
u32 *komeda_get_layer_fourcc_list(struct komeda_format_caps_table *table,
u32 layer_type, u32 *n_fmts)
{
const struct komeda_format_caps *cap;
u32 *fmts;
int i, j, n = 0;
fmts = kcalloc(table->n_formats, sizeof(u32), GFP_KERNEL);
if (!fmts)
return NULL;
for (i = 0; i < table->n_formats; i++) {
cap = &table->format_caps[i];
if (!(layer_type & cap->supported_layer_types) ||
(cap->fourcc == 0))
continue;
/* one fourcc may has two caps items in table (afbc/none-afbc),
* so check the existing list to avoid adding a duplicated one.
*/
for (j = n - 1; j >= 0; j--)
if (fmts[j] == cap->fourcc)
break;
if (j < 0)
fmts[n++] = cap->fourcc;
}
if (n_fmts)
*n_fmts = n;
return fmts;
}
void komeda_put_fourcc_list(u32 *fourcc_list)
{
kfree(fourcc_list);
}
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