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path: root/drivers/gpu/drm/i915/display/intel_vbt_defs.h
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2025-05-16drm/{i915,xe}: convert i915 and xe display members into pointersJani Nikula
As the first step towards making struct intel_display an opaque pointer in i915 and xe drivers, convert the struct drm_i915_private and struct xe_device display members into pointers. Initially, add temporary struct intel_display __display members, and point display at it to avoid dynamic allocation. In the future, we can drop this, and switch to dynamic allocation. The conversion is done simply with sed: sed -i 's/&\([a-zA-Z0-9_>.-]*\)\(dev_priv\|i915\|xe\)->display\([^.]\)/\1\2->display\3/g' \ $(git ls-files -- drivers/gpu/drm/i915 drivers/gpu/drm/xe) sed -i 's/\(dev_priv\|i915\|xe\)->display\./\1->display->/g' \ $(git ls-files -- drivers/gpu/drm/i915 drivers/gpu/drm/xe) With a couple of manual tweaks on top. v2: Initialize i915->display also in selftest mock_gem_device() Reviewed-by: Gustavo Sousa <gustavo.sousa@intel.com> Signed-off-by: Jani Nikula <jani.nikula@intel.com> Link: https://lore.kernel.org/r/20250507152254.2398934-1-jani.nikula@intel.com
2024-11-28drm/i915/pps: Decouple pps delays from VBT struct definitionVille Syrjälä
We currently lack a proper struct definition for the VBT power squencing delays, and instead we use the same struct definition (in intel_bios.h) for both the VBT layout and our driver side state. Decouple those two things by moving the current struct into intel_vbt_defs.h and adding a new one for the driver's use. Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20241106215859.25446-3-ville.syrjala@linux.intel.com Reviewed-by: Jani Nikula <jani.nikula@intel.com>
2024-08-29drm/i915/bios: Update new entries in VBT BDB block definitionsDnyaneshwar Bhadane
New entries updated in BDB definition from VBT v257 to v260. Extend fields in backlight power controller VBT block 43 for VBT v257. Add t6 delay support fields in edp panel power block 27 for VBT v260. Update supported VBT version range for obsolete fields. v2: - Update the commit message with description(Jani) - Rename variable names align to spec names(Jani) v3: Rename variables align to specs name (Suraj) Signed-off-by: Dnyaneshwar Bhadane <dnyaneshwar.bhadane@intel.com> Reviewed-by: Suraj Kandpal <suraj.kandpal@intel.com> Signed-off-by: Matt Roper <matthew.d.roper@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20240821121740.1596048-1-dnyaneshwar.bhadane@intel.com
2024-07-22drm/i915: Make I2C terminology more inclusiveEaswar Hariharan
I2C v7, SMBus 3.2, and I3C 1.1.1 specifications have replaced "master/slave" with more appropriate terms. Inspired by Wolfram's series to fix drivers/i2c/, fix the terminology for users of I2C_ALGOBIT bitbanging interface, now that the approved verbiage exists in the specification. Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com> Acked-by: Rodrigo Vivi <rodrigo.vivi@intel.com> Acked-by: Zhi Wang <zhiwang@kernel.org> Signed-off-by: Easwar Hariharan <eahariha@linux.microsoft.com> Reviewed-by: Andi Shyti <andi.shyti@linux.intel.com> Signed-off-by: Andi Shyti <andi.shyti@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20240711052734.1273652-4-eahariha@linux.microsoft.com
2024-06-07drm/i915/bios: Define the "luminance and gamma" sub-struct of block 46Ville Syrjälä
Since BDB version 211 block 46 has included more luminance and gamma related information. Define it fully. The data is semi-based on DisplayID v2.0 apparently. Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20240605134756.17099-2-ville.syrjala@linux.intel.com Reviewed-by: Jani Nikula <jani.nikula@intel.com>
2024-06-07drm/i915/bios: Define block 46 chromaticity coordinates properlyVille Syrjälä
The VBT spec does a very poor job of defining how the chromaticity coordinates in block 46 are laid out. After double checking the Windows implementation it turns out these more or less match the EDID definition, where the 10bit values are split into 2bit + 8bit chunks. Adjust our struct definition to reflect that. Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20240605134756.17099-1-ville.syrjala@linux.intel.com Reviewed-by: Jani Nikula <jani.nikula@intel.com>
2024-05-08drm/i915/bios: Define VBT block 253 (PRD Table) contentsVille Syrjälä
Define the contents of VBT block 253 (PRD Table). Unfortunately the block has two definitions, with the cutoff supposedly happening on ICL vs. TGL. Also according to some notes it might be that the VBIOS (if that's still a thing) still uses the old definition even on TGL+. Quite the mess. Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20240503122449.27266-36-ville.syrjala@linux.intel.com Reviewed-by: Jani Nikula <jani.nikula@intel.com>
2024-05-08drm/i915/bios: Define VBT block 252 (int15 Hook)Ville Syrjälä
Declare that VBT block 252 is the "int15 hook". This is some VBIOS only juju so don't bother with a full definition. Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20240503122449.27266-35-ville.syrjala@linux.intel.com Acked-by: Jani Nikula <jani.nikula@intel.com>
2024-05-08drm/i915/bios: Define VBT block 55 (Compression Parameters)Ville Syrjälä
Define the contents of the obsolete VBT block 55 (Compression Parameters). This was some early attempt at defining the compression parameters. However the spec says: "This block is obsolete and should not be consumed for any compression programming." Block 56 is the replacement that should actually be used. So let's just name the obsolete old block but not even bother defining the contents. Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20240503122449.27266-34-ville.syrjala@linux.intel.com Acked-by: Jani Nikula <jani.nikula@intel.com>
2024-05-08drm/i915/bios: Define VBT block 50 (MIPI) contentsVille Syrjälä
Define the contents of VBT block 50 (MIPI). This was some easly attempt at a MIPI DSI stuff. I'm not sure this was ever actually used (I certainly don't have any VBTs with this block), but here's some kind of definition for it anyway. Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20240503122449.27266-33-ville.syrjala@linux.intel.com Reviewed-by: Jani Nikula <jani.nikula@intel.com>
2024-05-08drm/i915/bios: Define VBT block 57 (Vswing PreEmphasis Table) contentsVille Syrjälä
Define the contents of VBT block 57 (Vswing PreEmphasis Table). The contents is highly platform specific. The columns of the table corresponding to some set of PHY/etc registers. The rows corresponding to all legal vswing+pre-emphasis combinations (ie. should be 10 rows in each table). And each table corresponds to a platform specific (mostly undocumented) mapping based on link rate/eDP low-vswing/etc. parameters. Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20240503122449.27266-32-ville.syrjala@linux.intel.com Reviewed-by: Jani Nikula <jani.nikula@intel.com>
2024-05-08drm/i915/bios: Define VBT block 55 (RGB Palette Table) contentsVille Syrjälä
Define the contents of VBT block 55 (RGB Palette Table). Note that I've not actually seen any real world VBTs with this block. Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20240503122449.27266-31-ville.syrjala@linux.intel.com Reviewed-by: Jani Nikula <jani.nikula@intel.com>
2024-05-08drm/i915/bios: Define VBT block 51 (Fixed Set Mode Table) contentsVille Syrjälä
Define the contents of VBT block 51 (Fixed Set Mode Table). Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20240503122449.27266-30-ville.syrjala@linux.intel.com Reviewed-by: Jani Nikula <jani.nikula@intel.com>
2024-05-08drm/i915/bios: Define VBT block 46 (Chromaticity For Narrow Gamut Panel) ↵Ville Syrjälä
contents Define the contents of VBT block 46 (Chromaticity For Narrow Gamut Panel). One entry per panel. Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20240503122449.27266-29-ville.syrjala@linux.intel.com Reviewed-by: Jani Nikula <jani.nikula@intel.com>
2024-05-08drm/i915/bios: Define VBT block 45 (eDP BFI) contentsVille Syrjälä
Define the contents of VBT block 45 (eDP BFI). Note that I've not actually seen any real world VBTs with this block. Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20240503122449.27266-28-ville.syrjala@linux.intel.com Acked-by: Jani Nikula <jani.nikula@intel.com>
2024-05-08drm/i915/bios: Define VBT block 28 (EFP DTD) contentsVille Syrjälä
Define the contents of VBT block 28 (EFP DTD). Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20240503122449.27266-27-ville.syrjala@linux.intel.com Reviewed-by: Jani Nikula <jani.nikula@intel.com>
2024-05-08drm/i915/bios: Define VBT block 26 (TV Options) contentsVille Syrjälä
Define the contents of VBT block 26 (TV Options). Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20240503122449.27266-26-ville.syrjala@linux.intel.com Reviewed-by: Jani Nikula <jani.nikula@intel.com>
2024-05-08drm/i915/bios: Define VBT block 25 (SDVO LVDS PPS) contentsVille Syrjälä
Define the contents of VBT block 25 (SDVO LVDS PPS). Not 100% sure about the order of the fields as this is not documented in the VBT spec anymore, but this order matches what is included as part of the power sequencing SDVO commands (struct sdvo_panel_power_sequencing). Also the real world VBT data I have looks OK with this definition. Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20240503122449.27266-25-ville.syrjala@linux.intel.com Acked-by: Jani Nikula <jani.nikula@intel.com>
2024-05-08drm/i915/bios: Define VBT block 24 (SDVO LVDS PnP ID) contentsVille Syrjälä
Define the contents of VBT block 24 (SDVO LVDS PnP ID). The descriotion is not part of the VBT spec anymore, but the layout is rather obsvious. Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20240503122449.27266-24-ville.syrjala@linux.intel.com Acked-by: Jani Nikula <jani.nikula@intel.com>
2024-05-08drm/i915/bios: Define VBT block 21 (EFP List) contentsVille Syrjälä
Define the contents of VBT block 21 (EFP List). Specs are nowhere to be found, but real world data suggests that each entry is just the first four bytes of the EDID PnP ID structure. Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20240503122449.27266-23-ville.syrjala@linux.intel.com Acked-by: Jani Nikula <jani.nikula@intel.com>
2024-05-08drm/i915/bios: Define VBT block 20 (OEM Customizable Modes) contentsVille Syrjälä
Define the contents of VBT block 20 (OEM Customizable Modes). Each entry is either 26 or 28 bytes, depending on the BDB version. Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20240503122449.27266-22-ville.syrjala@linux.intel.com Reviewed-by: Jani Nikula <jani.nikula@intel.com>
2024-05-08drm/i915/bios: Define VBT blocks 19,30,32 (Display Configuration Removal ↵Ville Syrjälä
Table) contents Define the contenst is VBT blocks 19,30,32 (Display Configuration Removal Table) contents. There are three variants of this block: pre-IVB, IVB, HSW+, with each having slightly different entries. Curiously many HSW/BDW machines seem to have both the IVB and HSW+ variants in their VBTs simultanously. No idea why. Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20240503122449.27266-21-ville.syrjala@linux.intel.com Acked-by: Jani Nikula <jani.nikula@intel.com>
2024-05-08drm/i915/bios: Define VBT blocks 16,29,31 (Toggle List) contentsVille Syrjälä
Define the contenst is VBT blocks 16,19,31 (Toggle List). There are three variants of this block: pre-IVB, IVB, HSW+, with each having slightly different entries. Curiously many HSW/BDW machines seem to have both the IVB and HSW+ variants in their VBTs simultanously. No idea why. Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20240503122449.27266-20-ville.syrjala@linux.intel.com Acked-by: Jani Nikula <jani.nikula@intel.com>
2024-05-08drm/i915/bios: Define VBT block 18 (Driver Rotation) contentsVille Syrjälä
Define the contents of block 18 (Driver Rotation). Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20240503122449.27266-19-ville.syrjala@linux.intel.com Reviewed-by: Jani Nikula <jani.nikula@intel.com>
2024-05-08drm/i915/bios: Define VBT block 17 (SV Test Functions) contentsVille Syrjälä
Define the contents of VBT block 17 (SV Test Functions). Nothing real here for us, but might as well define it for completeness. Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20240503122449.27266-18-ville.syrjala@linux.intel.com Acked-by: Jani Nikula <jani.nikula@intel.com>
2024-05-08drm/i915/bios: Define ALM only VBT block 9 contentsVille Syrjälä
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>
2024-05-08drm/i915/bios: Define VBT block 15 (Dot Clock Override Table) contentsVille Syrjälä
Define the contents of VBT block 15 (Dot Clock Override Table) The contents were reverse engineered by intuition. The gen2 stuff seems solid as I can verify that against real world VBT data. The gen3 stuff less so as all the gen3+ VBTs I have just filla the entire block with zeroes. Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20240503122449.27266-16-ville.syrjala@linux.intel.com Acked-by: Jani Nikula <jani.nikula@intel.com>
2024-05-08drm/i915/bios: Define VBT block 12 (Driver Persistent Algorithm) contentsVille Syrjälä
Define the contents of VBT block 12 (Driver Persistent Algorithm). Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20240503122449.27266-15-ville.syrjala@linux.intel.com Reviewed-by: Jani Nikula <jani.nikula@intel.com>
2024-05-08drm/i915/bios: Define VBT block 10 (Mode Removal Table) contentsVille Syrjälä
Define the contents of VBT block 10 (Mode Removal Table). There seem to be two variants: - 8 byte entries for desktop systems - 10 byte entries for mobile systems, with the extra panel_flags being a bitmask of LFPs It seems starting from HSW only the mobile variant is used anymore. Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20240503122449.27266-14-ville.syrjala@linux.intel.com Reviewed-by: Jani Nikula <jani.nikula@intel.com>
2024-05-08drm/i915/bios: Define VBT blocks 6,7,8 (register tables) contentsVille Syrjälä
Define the contents for VBT blocks: - Block 6 (Extended MMIO Register Table) - Block 7 (IO Software Flag Table) - Block 8 (MMIO SWF Register Table) All of these use the same basic layout, with two known variants: - data_access_size==0xce -> offset,value tuples are u8,u8 - data_access_size==0x02 -> offset,value tuples are u32,u32 Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20240503122449.27266-13-ville.syrjala@linux.intel.com Reviewed-by: Jani Nikula <jani.nikula@intel.com>
2024-05-08drm/i915/bios: Define VBT block 5 (Generic Mode Table)Ville Syrjälä
Define the contents of VBT block 5 (Generic Mode Table). Details were mostly gleaned from some VBIOS sources. There are apparently two variants of the block: ALM only vs. MGM, defined here as bdb_generic_mode_table_alm and bdb_generic_mode_table_mgm. And those are the only two platforms where I've seen this block. Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20240503122449.27266-12-ville.syrjala@linux.intel.com Acked-by: Jani Nikula <jani.nikula@intel.com>
2024-05-08drm/i915/bios: Define VBT block 4 (Mode Support List) contentsVille Syrjälä
Define the contents of VBT block 4 (Mode Support List). Slightly crazy layout with a variable length list at the start, followed by the length of said list. No real idea what these "Intel mode numbers" really are. What I see in real world VBTs seems to be always the same list of 26 numbers, ranging between 0x30 and 0x84. Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20240503122449.27266-11-ville.syrjala@linux.intel.com Reviewed-by: Jani Nikula <jani.nikula@intel.com>
2024-05-08drm/i915/bios: Define VBT block 3 (Display Toggle Option) contentsVille Syrjälä
Define the contents of VBT block 3 (Display Toggle Option). On modern VBTs this is just a single byte, but on ALM there is also some extra to do with toggle lists or something. Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20240503122449.27266-10-ville.syrjala@linux.intel.com Acked-by: Jani Nikula <jani.nikula@intel.com>
2024-05-08drm/i915/bios: Add version notes for some blocksVille Syrjälä
Document which VBT blocks were defined in which BDB version, for the cases where the spec actually states this accurately. Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20240503122449.27266-9-ville.syrjala@linux.intel.com Reviewed-by: Jani Nikula <jani.nikula@intel.com>
2024-05-08drm/i915/bios: Flag "VBIOS only" VBT data blocksVille Syrjälä
Several data blocks are mean to be consumbed by VBIOS only. Flag them as such. Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20240503122449.27266-8-ville.syrjala@linux.intel.com Acked-by: Jani Nikula <jani.nikula@intel.com>
2024-05-08drm/i915/bios: Define "TV" child device handleVille Syrjälä
Child device 0x2 used to be "TV" until redefined to mean EFP5 in version 215. Add a define for the old meaning as well. Technically it was probably deprecated a lot before version 215 since native TV encoders were last seen on CTG, and SDVO was fully gone by HSW. So something like "???-164" might also be a reasonable way to document this, but no real harm in saying "???-214" since nothing else presumably occupied that bit in the meantime. Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20240503122449.27266-7-ville.syrjala@linux.intel.com Acked-by: Jani Nikula <jani.nikula@intel.com>
2024-05-08drm/i915/bios: Rename SDVO DTD blocks a bitVille Syrjälä
The SDVO LVDS blocks are specifically about LVDS, so stick to naming that reflects that. This also makes the names match the spec. Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20240503122449.27266-6-ville.syrjala@linux.intel.com Acked-by: Jani Nikula <jani.nikula@intel.com>
2024-05-08drm/i915/bios: Get rid of "LVDS" from all LFP data stuffVille Syrjälä
The LFP data applies to all kinds of display interfaces, so stop calling things by the "LVDS" name. Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20240503122449.27266-5-ville.syrjala@linux.intel.com Reviewed-by: Jani Nikula <jani.nikula@intel.com>
2024-05-08drm/i915/bios: Indicate which VBT structures are based on EDIDVille Syrjälä
VBT reuses a bunch of EDID data structures. Flag those as such for clarity. I chose "bdb_edid_" as the namespace for these. Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20240503122449.27266-4-ville.syrjala@linux.intel.com Reviewed-by: Jani Nikula <jani.nikula@intel.com>
2024-05-08drm/i915/bios: Remove version number comment from DEVICE_HANDLE_EFP4Ville Syrjälä
DEVICE_HANDLE_EFP4 has actually been in use since the very beginning, or at least something has been occupying that bit because old VBTs actually use it, and it definitely looks to be about external displays given how its used. So let's ignore what the current spec claims and remove the misleading version number comment. Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20240503122449.27266-3-ville.syrjala@linux.intel.com Acked-by: Jani Nikula <jani.nikula@intel.com>
2024-05-08drm/i915/bios: Define eDP DSC disable bitVille Syrjälä
There's a new "DSC disable" bit in the eDP VBT block. Define it. TODO: actually use it? Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20240503122449.27266-2-ville.syrjala@linux.intel.com Reviewed-by: Jani Nikula <jani.nikula@intel.com>
2024-05-07drm/i915/bios: Fix parsing backlight BDB dataKarthikeyan Ramasubramanian
Starting BDB version 239, hdr_dpcd_refresh_timeout is introduced to backlight BDB data. Commit 700034566d68 ("drm/i915/bios: Define more BDB contents") updated the backlight BDB data accordingly. This broke the parsing of backlight BDB data in VBT for versions 236 - 238 (both inclusive) and hence the backlight controls are not responding on units with the concerned BDB version. backlight_control information has been present in backlight BDB data from at least BDB version 191 onwards, if not before. Hence this patch extracts the backlight_control information for BDB version 191 or newer. Tested on Chromebooks using Jasperlake SoC (reports bdb->version = 236). Tested on Chromebooks using Raptorlake SoC (reports bdb->version = 251). v2: removed checking the block size of the backlight BDB data [vsyrjala: this is completely safe thanks to commit e163cfb4c96d ("drm/i915/bios: Make copies of VBT data blocks")] Fixes: 700034566d68 ("drm/i915/bios: Define more BDB contents") Cc: stable@vger.kernel.org Cc: Jani Nikula <jani.nikula@intel.com> Cc: Ville Syrjälä <ville.syrjala@linux.intel.com> Signed-off-by: Karthikeyan Ramasubramanian <kramasub@chromium.org> Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20240221180622.v2.1.I0690aa3e96a83a43b3fc33f50395d334b2981826@changeid Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
2024-03-22drm/i915/bios: Pimp the VBT backlight data BDB version commentsVille Syrjälä
Add the missing BDB version number information for some of the backlight fields in VBT. Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20240321161806.31714-6-ville.syrjala@linux.intel.com Reviewed-by: Jani Nikula <jani.nikula@intel.com>
2024-03-22drm/i915/bios: Define the (obsolete) backlight i2c VBT stuffVille Syrjälä
The VBT backlight entries include various fields for i2c controlled backlights. These have been obsoleted at some unknown point in time, but let's define them anyway so that we have a full picture of what has been in there. Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20240321161806.31714-5-ville.syrjala@linux.intel.com Reviewed-by: Jani Nikula <jani.nikula@intel.com>
2024-03-22drm/i915/bios: Add the old DPST field into VBT LFP power blockVille Syrjälä
According to some VBIOS sources the LFP power block used to have a single bit for DPST support. In version 159 that bit got moved into the driver features block, and then in version 228 back into the LFP power block (but this time as a per-panel thing). We have definitions for the last two, but not the original bit. Define it as well. Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20240321161806.31714-4-ville.syrjala@linux.intel.com Acked-by: Jani Nikula <jani.nikula@intel.com>
2024-03-22drm/i915/bios: Update VBT driver feature block version numbersVille Syrjälä
While the spec does claim that most of the driver feature flags start from BDB version 165, reality and some VBIOS code disagrees. The VBIOS code says it starts from version 159, and my ILK with version 162 definitely has these things already in its VBT. Update the version number comments to say 159+ for all the bits that seem relevant for pre-hsw hardware. Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20240321161806.31714-3-ville.syrjala@linux.intel.com Acked-by: Jani Nikula <jani.nikula@intel.com>
2024-03-22drm/i915/bios: s/dpfs/dfps/Ville Syrjälä
We've misspelled the VBT DFPS (dynamic frames per second) field as DPFS. Fix it. Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20240321161806.31714-2-ville.syrjala@linux.intel.com Reviewed-by: Jani Nikula <jani.nikula@intel.com>
2024-02-29drm/i915/bios: bump expected child device sizeJani Nikula
VBT versions since 256 have an extra byte for EFP index. v2: Update BUILD_BUG_ON() (Matt) Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20240226175854.287871-1-jani.nikula@intel.com Signed-off-by: Jani Nikula <jani.nikula@intel.com>
2022-09-13drm/i915/bios: Add the "Disable compression for the Display Port/HDMI ↵Ville Syrjälä
external display" bit The child device block has gained a new bit for disabling compression for external displays. Seems stupid, but there it is. Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20220907093534.29004-2-ville.syrjala@linux.intel.com Reviewed-by: Jani Nikula <jani.nikula@intel.com>
2022-09-13drm/i915/bios: Fix VBT ACPI DPMS bit polarityVille Syrjälä
We have the ACPI vs. not ACPI DPMS bit polarity the wrong way around. Fix it. Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20220907093534.29004-1-ville.syrjala@linux.intel.com Reviewed-by: Jani Nikula <jani.nikula@intel.com>
generated by cgit v1.2.3 (git 2.39.1) at 2025-08-02 07:11:19 +0000