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1// SPDX-License-Identifier: GPL-2.02/*3 * (C) COPYRIGHT 2018 ARM Limited. All rights reserved.4 * Author: James.Qian.Wang <james.qian.wang@arm.com>5 *6 */7 8#include <linux/slab.h>9#include "komeda_format_caps.h"10#include "malidp_utils.h"11 12const struct komeda_format_caps *13komeda_get_format_caps(struct komeda_format_caps_table *table,14 u32 fourcc, u64 modifier)15{16 const struct komeda_format_caps *caps;17 u64 afbc_features = modifier & ~(AFBC_FORMAT_MOD_BLOCK_SIZE_MASK);18 u32 afbc_layout = modifier & AFBC_FORMAT_MOD_BLOCK_SIZE_MASK;19 int id;20 21 for (id = 0; id < table->n_formats; id++) {22 caps = &table->format_caps[id];23 24 if (fourcc != caps->fourcc)25 continue;26 27 if ((modifier == 0ULL) && (caps->supported_afbc_layouts == 0))28 return caps;29 30 if (has_bits(afbc_features, caps->supported_afbc_features) &&31 has_bit(afbc_layout, caps->supported_afbc_layouts))32 return caps;33 }34 35 return NULL;36}37 38u32 komeda_get_afbc_format_bpp(const struct drm_format_info *info, u64 modifier)39{40 u32 bpp;41 42 switch (info->format) {43 case DRM_FORMAT_YUV420_8BIT:44 bpp = 12;45 break;46 case DRM_FORMAT_YUV420_10BIT:47 bpp = 15;48 break;49 default:50 bpp = info->cpp[0] * 8;51 break;52 }53 54 return bpp;55}56 57/* Two assumptions58 * 1. RGB always has YTR59 * 2. Tiled RGB always has SC60 */61u64 komeda_supported_modifiers[] = {62 /* AFBC_16x16 + features: YUV+RGB both */63 AFBC_16x16(0),64 /* SPARSE */65 AFBC_16x16(_SPARSE),66 /* YTR + (SPARSE) */67 AFBC_16x16(_YTR | _SPARSE),68 AFBC_16x16(_YTR),69 /* SPLIT + SPARSE + YTR RGB only */70 /* split mode is only allowed for sparse mode */71 AFBC_16x16(_SPLIT | _SPARSE | _YTR),72 /* TILED + (SPARSE) */73 /* TILED YUV format only */74 AFBC_16x16(_TILED | _SPARSE),75 AFBC_16x16(_TILED),76 /* TILED + SC + (SPLIT+SPARSE | SPARSE) + (YTR) */77 AFBC_16x16(_TILED | _SC | _SPLIT | _SPARSE | _YTR),78 AFBC_16x16(_TILED | _SC | _SPARSE | _YTR),79 AFBC_16x16(_TILED | _SC | _YTR),80 /* AFBC_32x8 + features: which are RGB formats only */81 /* YTR + (SPARSE) */82 AFBC_32x8(_YTR | _SPARSE),83 AFBC_32x8(_YTR),84 /* SPLIT + SPARSE + (YTR) */85 /* split mode is only allowed for sparse mode */86 AFBC_32x8(_SPLIT | _SPARSE | _YTR),87 /* TILED + SC + (SPLIT+SPARSE | SPARSE) + YTR */88 AFBC_32x8(_TILED | _SC | _SPLIT | _SPARSE | _YTR),89 AFBC_32x8(_TILED | _SC | _SPARSE | _YTR),90 AFBC_32x8(_TILED | _SC | _YTR),91 DRM_FORMAT_MOD_LINEAR,92 DRM_FORMAT_MOD_INVALID93};94 95bool komeda_format_mod_supported(struct komeda_format_caps_table *table,96 u32 layer_type, u32 fourcc, u64 modifier,97 u32 rot)98{99 const struct komeda_format_caps *caps;100 101 caps = komeda_get_format_caps(table, fourcc, modifier);102 if (!caps)103 return false;104 105 if (!(caps->supported_layer_types & layer_type))106 return false;107 108 if (table->format_mod_supported)109 return table->format_mod_supported(caps, layer_type, modifier,110 rot);111 112 return true;113}114 115u32 *komeda_get_layer_fourcc_list(struct komeda_format_caps_table *table,116 u32 layer_type, u32 *n_fmts)117{118 const struct komeda_format_caps *cap;119 u32 *fmts;120 int i, j, n = 0;121 122 fmts = kcalloc(table->n_formats, sizeof(u32), GFP_KERNEL);123 if (!fmts)124 return NULL;125 126 for (i = 0; i < table->n_formats; i++) {127 cap = &table->format_caps[i];128 if (!(layer_type & cap->supported_layer_types) ||129 (cap->fourcc == 0))130 continue;131 132 /* one fourcc may has two caps items in table (afbc/none-afbc),133 * so check the existing list to avoid adding a duplicated one.134 */135 for (j = n - 1; j >= 0; j--)136 if (fmts[j] == cap->fourcc)137 break;138 139 if (j < 0)140 fmts[n++] = cap->fourcc;141 }142 143 if (n_fmts)144 *n_fmts = n;145 146 return fmts;147}148 149void komeda_put_fourcc_list(u32 *fourcc_list)150{151 kfree(fourcc_list);152}153