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drm/i915/bios: Document the mess around the LFP data tables 

Document the fact that struct lvds_lfp_data_entry can't be used
directly and instead must be accessed via the data table pointers.

Also remove the bogus comment implying that there might be a
variable number of panel entries in the table. There are always
exactly 16.

Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220504150440.13748-5-ville.syrjala@linux.intel.com
This commit is contained in:
Ville Syrjälä 2022-05-04 18:04:35 +03:00
parent 901a0cad2a
commit 9adf7d4186
1 changed files with 6 additions and 1 deletions
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7
drivers/gpu/drm/i915/display/intel_vbt_defs.h
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@ -735,7 +735,7 @@ struct lvds_lfp_data_ptr {
} __packed;
struct bdb_lvds_lfp_data_ptrs {
u8 lvds_entries; /* followed by one or more lvds_data_ptr structs */
u8 lvds_entries;
struct lvds_lfp_data_ptr ptr[16];
struct lvds_lfp_data_ptr_table panel_name; /* 156-163? */
} __packed;
@ -769,6 +769,11 @@ struct lvds_pnp_id {
u8 mfg_year;
} __packed;
/*
* For reference only. fp_timing has variable size so
* the data must be accessed using the data table pointers.
* Do not use this directly!
*/
struct lvds_lfp_data_entry {
struct lvds_fp_timing fp_timing;
struct lvds_dvo_timing dvo_timing;