drivers/gpu/drm/arm/display/komeda/komeda_format_caps.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 /*
   3  * (C) COPYRIGHT 2018 ARM Limited. All rights reserved.
   4  * Author: James.Qian.Wang <james.qian.wang@arm.com>
   5  *
   6  */
   7
   8 #ifndef _KOMEDA_FORMAT_CAPS_H_
   9 #define _KOMEDA_FORMAT_CAPS_H_
  10
  11 #include <linux/types.h>
  12 #include <uapi/drm/drm_fourcc.h>
  13 #include <drm/drm_fourcc.h>
  14
  15 #define AFBC(x)         DRM_FORMAT_MOD_ARM_AFBC(x)
  16
  17 /* afbc layerout */
  18 #define AFBC_16x16(x)   AFBC(AFBC_FORMAT_MOD_BLOCK_SIZE_16x16 | (x))
  19 #define AFBC_32x8(x)    AFBC(AFBC_FORMAT_MOD_BLOCK_SIZE_32x8 | (x))
  20
  21 /* afbc features */
  22 #define _YTR            AFBC_FORMAT_MOD_YTR
  23 #define _SPLIT          AFBC_FORMAT_MOD_SPLIT
  24 #define _SPARSE         AFBC_FORMAT_MOD_SPARSE
  25 #define _CBR            AFBC_FORMAT_MOD_CBR
  26 #define _TILED          AFBC_FORMAT_MOD_TILED
  27 #define _SC             AFBC_FORMAT_MOD_SC
  28
  29 /* layer_type */
  30 #define KOMEDA_FMT_RICH_LAYER           BIT(0)
  31 #define KOMEDA_FMT_SIMPLE_LAYER         BIT(1)
  32 #define KOMEDA_FMT_WB_LAYER             BIT(2)
  33
  34 #define AFBC_TH_LAYOUT_ALIGNMENT        8
  35 #define AFBC_HEADER_SIZE                16
  36 #define AFBC_SUPERBLK_ALIGNMENT         128
  37 #define AFBC_SUPERBLK_PIXELS            256
  38 #define AFBC_BODY_START_ALIGNMENT       1024
  39 #define AFBC_TH_BODY_START_ALIGNMENT    4096
  40
  41 /**
  42  * struct komeda_format_caps
  43  *
  44  * komeda_format_caps is for describing ARM display specific features and
  45  * limitations for a specific format, and format_caps will be linked into
  46  * &komeda_framebuffer like a extension of &drm_format_info.
  47  *
  48  * NOTE: one fourcc may has two different format_caps items for fourcc and
  49  * fourcc+modifier
  50  *
  51  * @hw_id: hw format id, hw specific value.
  52  * @fourcc: drm fourcc format.
  53  * @supported_layer_types: indicate which layer supports this format
  54  * @supported_rots: allowed rotations for this format
  55  * @supported_afbc_layouts: supported afbc layerout
  56  * @supported_afbc_features: supported afbc features
  57  */
  58 struct komeda_format_caps {
  59         u32 hw_id;
  60         u32 fourcc;
  61         u32 supported_layer_types;
  62         u32 supported_rots;
  63         u32 supported_afbc_layouts;
  64         u64 supported_afbc_features;
  65 };
  66
  67 /**
  68  * struct komeda_format_caps_table - format_caps mananger
  69  *
  70  * @n_formats: the size of format_caps list.
  71  * @format_caps: format_caps list.
  72  * @format_mod_supported: Optional. Some HW may have special requirements or
  73  * limitations which can not be described by format_caps, this func supply HW
  74  * the ability to do the further HW specific check.
  75  */
  76 struct komeda_format_caps_table {
  77         u32 n_formats;
  78         const struct komeda_format_caps *format_caps;
  79         bool (*format_mod_supported)(const struct komeda_format_caps *caps,
  80                                      u32 layer_type, u64 modifier, u32 rot);
  81 };
  82
  83 extern u64 komeda_supported_modifiers[];
  84
  85 static inline const char *komeda_get_format_name(u32 fourcc, u64 modifier)
  86 {
  87         struct drm_format_name_buf buf;
  88         static char name[64];
  89
  90         snprintf(name, sizeof(name), "%s with modifier: 0x%llx.",
  91                  drm_get_format_name(fourcc, &buf), modifier);
  92
  93         return name;
  94 }
  95
  96 const struct komeda_format_caps *
  97 komeda_get_format_caps(struct komeda_format_caps_table *table,
  98                        u32 fourcc, u64 modifier);
  99
 100 u32 komeda_get_afbc_format_bpp(const struct drm_format_info *info,
 101                                u64 modifier);
 102
 103 u32 *komeda_get_layer_fourcc_list(struct komeda_format_caps_table *table,
 104                                   u32 layer_type, u32 *n_fmts);
 105
 106 void komeda_put_fourcc_list(u32 *fourcc_list);
 107
 108 bool komeda_format_mod_supported(struct komeda_format_caps_table *table,
 109                                  u32 layer_type, u32 fourcc, u64 modifier,
 110                                  u32 rot);
 111
 112 #endif