mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-23 09:19:51 +00:00
drm/i915/bios: add compression parameter block definition
Add definition for block 56, the compression parameters. v2: add missing slice_height (Vandita) Cc: Vandita Kulkarni <vandita.kulkarni@intel.com> Reviewed-by: Vandita Kulkarni <vandita.kulkarni@intel.com> Signed-off-by: Jani Nikula <jani.nikula@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20191024075608.11511-1-jani.nikula@intel.com
This commit is contained in:
parent
52aac377e7
commit
96815f3d8b
1 changed files with 52 additions and 0 deletions
|
@ -114,6 +114,7 @@ enum bdb_block_id {
|
|||
BDB_LVDS_POWER = 44,
|
||||
BDB_MIPI_CONFIG = 52,
|
||||
BDB_MIPI_SEQUENCE = 53,
|
||||
BDB_COMPRESSION_PARAMETERS = 56,
|
||||
BDB_SKIP = 254, /* VBIOS private block, ignore */
|
||||
};
|
||||
|
||||
|
@ -811,4 +812,55 @@ struct bdb_mipi_sequence {
|
|||
u8 data[0]; /* up to 6 variable length blocks */
|
||||
} __packed;
|
||||
|
||||
/*
|
||||
* Block 56 - Compression Parameters
|
||||
*/
|
||||
|
||||
#define VBT_RC_BUFFER_BLOCK_SIZE_1KB 0
|
||||
#define VBT_RC_BUFFER_BLOCK_SIZE_4KB 1
|
||||
#define VBT_RC_BUFFER_BLOCK_SIZE_16KB 2
|
||||
#define VBT_RC_BUFFER_BLOCK_SIZE_64KB 3
|
||||
|
||||
#define VBT_DSC_LINE_BUFFER_DEPTH(vbt_value) ((vbt_value) + 8) /* bits */
|
||||
#define VBT_DSC_MAX_BPP(vbt_value) (6 + (vbt_value) * 2)
|
||||
|
||||
struct dsc_compression_parameters_entry {
|
||||
u8 version_major:4;
|
||||
u8 version_minor:4;
|
||||
|
||||
u8 rc_buffer_block_size:2;
|
||||
u8 reserved1:6;
|
||||
|
||||
/*
|
||||
* Buffer size in bytes:
|
||||
*
|
||||
* 4 ^ rc_buffer_block_size * 1024 * (rc_buffer_size + 1) bytes
|
||||
*/
|
||||
u8 rc_buffer_size;
|
||||
u32 slices_per_line;
|
||||
|
||||
u8 line_buffer_depth:4;
|
||||
u8 reserved2:4;
|
||||
|
||||
/* Flag Bits 1 */
|
||||
u8 block_prediction_enable:1;
|
||||
u8 reserved3:7;
|
||||
|
||||
u8 max_bpp; /* mapping */
|
||||
|
||||
/* Color depth capabilities */
|
||||
u8 reserved4:1;
|
||||
u8 support_8bpc:1;
|
||||
u8 support_10bpc:1;
|
||||
u8 support_12bpc:1;
|
||||
u8 reserved5:4;
|
||||
|
||||
u16 slice_height;
|
||||
} __packed;
|
||||
|
||||
struct bdb_compression_parameters {
|
||||
u16 entry_size;
|
||||
struct dsc_compression_parameters_entry data[16];
|
||||
} __packed;
|
||||
|
||||
#endif /* _INTEL_VBT_DEFS_H_ */
|
||||
|
|
Loading…
Reference in a new issue