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drm/i915/bios: add an enum for BDB block IDs

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Better grouping, better semantics for find_section(). No functional
changes.

Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/192cc8a45cb5c36ccbde25a725df135793a4263f.1559308269.git.jani.nikula@intel.com
This commit is contained in:
Jani Nikula
2019-05-31 16:15:03 +03:00
parent b77f9525a6
commit f41c615310
2 changed files with 38 additions and 37 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/gpu/drm/i915/intel_bios.c
View File

@@ -76,13 +76,13 @@ static u32 get_blocksize(const void *block_data)
}
static const void *
find_section(const void *_bdb, int section_id)
find_section(const void *_bdb, enum bdb_block_id section_id)
{
const struct bdb_header *bdb = _bdb;
const u8 *base = _bdb;
int index = 0;
u32 total, current_size;
u8 current_id;
enum bdb_block_id current_id;
/* skip to first section */
index += bdb->header_size;

71
drivers/gpu/drm/i915/intel_vbt_defs.h
View File

@@ -80,41 +80,42 @@ struct bdb_header {
* an ID and size in the first 3 bytes (ID in first, size in next 2).
* Known types are listed below.
*/
#define BDB_GENERAL_FEATURES 1
#define BDB_GENERAL_DEFINITIONS 2
#define BDB_OLD_TOGGLE_LIST 3
#define BDB_MODE_SUPPORT_LIST 4
#define BDB_GENERIC_MODE_TABLE 5
#define BDB_EXT_MMIO_REGS 6
#define BDB_SWF_IO 7
#define BDB_SWF_MMIO 8
#define BDB_PSR 9
#define BDB_MODE_REMOVAL_TABLE 10
#define BDB_CHILD_DEVICE_TABLE 11
#define BDB_DRIVER_FEATURES 12
#define BDB_DRIVER_PERSISTENCE 13
#define BDB_EXT_TABLE_PTRS 14
#define BDB_DOT_CLOCK_OVERRIDE 15
#define BDB_DISPLAY_SELECT 16
/* 17 rsvd */
#define BDB_DRIVER_ROTATION 18
#define BDB_DISPLAY_REMOVE 19
#define BDB_OEM_CUSTOM 20
#define BDB_EFP_LIST 21 /* workarounds for VGA hsync/vsync */
#define BDB_SDVO_LVDS_OPTIONS 22
#define BDB_SDVO_PANEL_DTDS 23
#define BDB_SDVO_LVDS_PNP_IDS 24
#define BDB_SDVO_LVDS_POWER_SEQ 25
#define BDB_TV_OPTIONS 26
#define BDB_EDP 27
#define BDB_LVDS_OPTIONS 40
#define BDB_LVDS_LFP_DATA_PTRS 41
#define BDB_LVDS_LFP_DATA 42
#define BDB_LVDS_BACKLIGHT 43
#define BDB_LVDS_POWER 44
#define BDB_MIPI_CONFIG 52
#define BDB_MIPI_SEQUENCE 53
#define BDB_SKIP 254 /* VBIOS private block, ignore */
enum bdb_block_id {
BDB_GENERAL_FEATURES = 1,
BDB_GENERAL_DEFINITIONS = 2,
BDB_OLD_TOGGLE_LIST = 3,
BDB_MODE_SUPPORT_LIST = 4,
BDB_GENERIC_MODE_TABLE = 5,
BDB_EXT_MMIO_REGS = 6,
BDB_SWF_IO = 7,
BDB_SWF_MMIO = 8,
BDB_PSR = 9,
BDB_MODE_REMOVAL_TABLE = 10,
BDB_CHILD_DEVICE_TABLE = 11,
BDB_DRIVER_FEATURES = 12,
BDB_DRIVER_PERSISTENCE = 13,
BDB_EXT_TABLE_PTRS = 14,
BDB_DOT_CLOCK_OVERRIDE = 15,
BDB_DISPLAY_SELECT = 16,
BDB_DRIVER_ROTATION = 18,
BDB_DISPLAY_REMOVE = 19,
BDB_OEM_CUSTOM = 20,
BDB_EFP_LIST = 21, /* workarounds for VGA hsync/vsync */
BDB_SDVO_LVDS_OPTIONS = 22,
BDB_SDVO_PANEL_DTDS = 23,
BDB_SDVO_LVDS_PNP_IDS = 24,
BDB_SDVO_LVDS_POWER_SEQ = 25,
BDB_TV_OPTIONS = 26,
BDB_EDP = 27,
BDB_LVDS_OPTIONS = 40,
BDB_LVDS_LFP_DATA_PTRS = 41,
BDB_LVDS_LFP_DATA = 42,
BDB_LVDS_BACKLIGHT = 43,
BDB_LVDS_POWER = 44,
BDB_MIPI_CONFIG = 52,
BDB_MIPI_SEQUENCE = 53,
BDB_SKIP = 254, /* VBIOS private block, ignore */
};
/*
* Block 1 - General Bit Definitions