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| author | Ville Syrjälä <ville.syrjala@linux.intel.com> | 2024-05-03 15:24:30 +0300 |
|---|---|---|
| committer | Ville Syrjälä <ville.syrjala@linux.intel.com> | 2024-05-08 16:40:35 +0300 |
| commit | 55c6b98676ed667f8900d46257b96eff47abef55 (patch) | |
| tree | 087eda1c8688287cdeec63fdc15125524ae57c63 /drivers | |
| parent | f7d5b5ff088fc85baa563182f5ff2cd501ed56d5 (diff) | |
| download | lwn-55c6b98676ed667f8900d46257b96eff47abef55.tar.gz lwn-55c6b98676ed667f8900d46257b96eff47abef55.zip | |
drm/i915/bios: Define ALM only VBT block 9 contents
For some reason ALM VBT has two dot clock override tables.
One as the normal block 15 and a second one as block 9.
The table in block 9 has no row_size/num_rows information.
On my Fujitsu Lifebook S6010 only the block 9 table has actual
data in it. Block 15 is present but all zeroes.
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240503122449.27266-17-ville.syrjala@linux.intel.com
Acked-by: Jani Nikula <jani.nikula@intel.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/gpu/drm/i915/display/intel_vbt_defs.h | 31 |
1 files changed, 20 insertions, 11 deletions
diff --git a/drivers/gpu/drm/i915/display/intel_vbt_defs.h b/drivers/gpu/drm/i915/display/intel_vbt_defs.h index 75c702c9890b..0a3a7e3d1d99 100644 --- a/drivers/gpu/drm/i915/display/intel_vbt_defs.h +++ b/drivers/gpu/drm/i915/display/intel_vbt_defs.h @@ -147,6 +147,7 @@ enum bdb_block_id { BDB_EXT_MMIO_REGS = 6, /* VBIOS only */ BDB_SWF_IO = 7, /* VBIOS only */ BDB_SWF_MMIO = 8, /* VBIOS only */ + BDB_DOT_CLOCK_OVERRIDE_ALM = 9, BDB_PSR = 9, /* 165+ */ BDB_MODE_REMOVAL_TABLE = 10, BDB_CHILD_DEVICE_TABLE = 11, @@ -651,6 +652,25 @@ struct bdb_reg_table { } __packed; /* + * Block 9 - Undocumented table (ALM only) + */ + +struct dot_clock_override_entry_gen2 { + u32 dotclock; + u8 n; + u8 m1; + u8 m2; + u8 p1:5; + u8 p1_div_by_2:1; + u8 reserved:1; + u8 p2_div_by_4:1; +} __packed; + +struct bdb_dot_clock_override_alm { + struct dot_clock_override_entry_gen2 t[0]; +} __packed; + +/* * Block 9 - SRD Feature Block */ @@ -801,17 +821,6 @@ struct bdb_driver_persistence { * Block 15 - Dot Clock Override Table */ -struct dot_clock_override_entry_gen2 { - u32 dotclock; - u8 n; - u8 m1; - u8 m2; - u8 p1:5; - u8 p1_div_by_2:1; - u8 reserved:1; - u8 p2_div_by_4:1; -} __packed; - struct dot_clock_override_entry_gen3 { u32 dotclock; u8 n; |