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drm/i915/bios: add BDB block comments before definitions

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Use the comments verbatim from the spec to help find the right block. 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/52c32be96bd605d7a9f94accbd4dbe7718849f93.1559308269.git.jani.nikula@intel.com
This commit is contained in:
Jani Nikula
2019-05-31 16:14:59 +03:00
parent f87f6599c8
commit 231dcffc23
1 changed files with 50 additions and 7 deletions
Download Patch File Download Diff File Expand all files Collapse all files

57
drivers/gpu/drm/i915/intel_vbt_defs.h
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@@ -116,6 +116,10 @@ struct bdb_header {
#define BDB_MIPI_SEQUENCE 53
#define BDB_SKIP 254 /* VBIOS private block, ignore */
/*
* Block 1 - General Bit Definitions
*/
struct bdb_general_features {
/* bits 1 */
u8 panel_fitting:2;
@@ -157,6 +161,10 @@ struct bdb_general_features {
u8 rsvd11:2; /* finish byte */
} __packed;
/*
* Block 2 - General Bytes Definition
*/
/* pre-915 */
#define GPIO_PIN_DVI_LVDS 0x03 /* "DVI/LVDS DDC GPIO pins" */
#define GPIO_PIN_ADD_I2C 0x05 /* "ADDCARD I2C GPIO pins" */
@@ -447,6 +455,10 @@ struct bdb_general_definitions {
u8 devices[0];
} __packed;
/*
* Block 40 - LFP Data Block
*/
/* Mask for DRRS / Panel Channel / SSC / BLT control bits extraction */
#define MODE_MASK 0x3
@@ -476,6 +488,10 @@ struct bdb_lvds_options {
u32 blt_control_type_bits;
} __packed;
/*
* Block 41 - LFP Data Table Pointers
*/
/* LFP pointer table contains entries to the struct below */
struct lvds_lfp_data_ptr {
u16 fp_timing_offset; /* offsets are from start of bdb */
@@ -491,6 +507,10 @@ struct bdb_lvds_lfp_data_ptrs {
struct lvds_lfp_data_ptr ptr[16];
} __packed;
/*
* Block 42 - LFP Data Tables
*/
/* LFP data has 3 blocks per entry */
struct lvds_fp_timing {
u16 x_res;
@@ -557,10 +577,18 @@ struct bdb_lvds_lfp_data {
struct lvds_lfp_data_entry data[16];
} __packed;
/*
* Block 23 - SDVO LVDS Panel DTDs
*/
struct bdb_sdvo_panel_dtds {
struct lvds_dvo_timing dtds[4];
} __packed;
/*
* Block 43 - LFP Backlight Control Data Block
*/
#define BDB_BACKLIGHT_TYPE_NONE 0
#define BDB_BACKLIGHT_TYPE_PWM 2
@@ -586,6 +614,10 @@ struct bdb_lfp_backlight_data {
struct lfp_backlight_control_method backlight_control[16];
} __packed;
/*
* Block 22 - SDVO LVDS General Options
*/
struct bdb_sdvo_lvds_options {
u8 panel_backlight;
u8 h40_set_panel_type;
@@ -602,6 +634,9 @@ struct bdb_sdvo_lvds_options {
u8 panel_misc_bits_4;
} __packed;
/*
* Block 12 - Driver Features Data Block
*/
#define BDB_DRIVER_FEATURE_NO_LVDS 0
#define BDB_DRIVER_FEATURE_INT_LVDS 1
@@ -662,6 +697,10 @@ struct bdb_driver_features {
u16 pc_feature_valid:1;
} __packed;
/*
* Block 27 - eDP VBT Block
*/
#define EDP_18BPP 0
#define EDP_24BPP 1
#define EDP_30BPP 2
@@ -714,6 +753,10 @@ struct bdb_edp {
struct edp_full_link_params full_link_params[16]; /* 199 */
} __packed;
/*
* Block 9 - SRD Feature Block
*/
struct psr_table {
/* Feature bits */
u8 full_link:1;
@@ -737,10 +780,10 @@ struct bdb_psr {
struct psr_table psr_table[16];
} __packed;
/* Block 52 contains MIPI configuration block
* 6 * bdb_mipi_config, followed by 6 pps data block
* block below
/*
* Block 52 - MIPI Configuration Block
*/
#define MAX_MIPI_CONFIGURATIONS 6
struct bdb_mipi_config {
@@ -748,13 +791,13 @@ struct bdb_mipi_config {
struct mipi_pps_data pps[MAX_MIPI_CONFIGURATIONS];
} __packed;
/* Block 53 contains MIPI sequences as needed by the panel
* for enabling it. This block can be variable in size and
* can be maximum of 6 blocks
/*
* Block 53 - MIPI Sequence Block
*/
struct bdb_mipi_sequence {
u8 version;
u8 data[0];
u8 data[0]; /* up to 6 variable length blocks */
} __packed;
#endif /* _INTEL_VBT_DEFS_H_ */