- 08 May, 2024 35 commits
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Ville Syrjälä authored
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.comReviewed-by:
Jani Nikula <jani.nikula@intel.com>
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Ville Syrjälä authored
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:
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Ville Syrjälä authored
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:
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Ville Syrjälä authored
Define the contents of VBT block 51 (Fixed Set Mode Table). Signed-off-by:
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Ville Syrjälä authored
Define the contents of VBT block 46 (Chromaticity For Narrow Gamut Panel). One entry per panel. Signed-off-by:
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Ville Syrjälä authored
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:
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Ville Syrjälä authored
Define the contents of VBT block 28 (EFP DTD). Signed-off-by:
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Ville Syrjälä authored
Define the contents of VBT block 26 (TV Options). Signed-off-by:
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Ville Syrjälä authored
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:
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Ville Syrjälä authored
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:
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Ville Syrjälä authored
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:
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Ville Syrjälä authored
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:
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Ville Syrjälä authored
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:
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Ville Syrjälä authored
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:
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Ville Syrjälä authored
Define the contents of block 18 (Driver Rotation). Signed-off-by:
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Ville Syrjälä authored
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:
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Ville Syrjälä authored
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:
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Ville Syrjälä authored
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:
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Ville Syrjälä authored
Define the contents of VBT block 12 (Driver Persistent Algorithm). Signed-off-by:
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Ville Syrjälä authored
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:
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Ville Syrjälä authored
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:
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Ville Syrjälä authored
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:
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Ville Syrjälä authored
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:
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Ville Syrjälä authored
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:
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Ville Syrjälä authored
Document which VBT blocks were defined in which BDB version, for the cases where the spec actually states this accurately. Signed-off-by:
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Ville Syrjälä authored
Several data blocks are mean to be consumbed by VBIOS only. Flag them as such. Signed-off-by:
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Ville Syrjälä authored
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:
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Ville Syrjälä authored
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:
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Ville Syrjälä authored
The LFP data applies to all kinds of display interfaces, so stop calling things by the "LVDS" name. Signed-off-by:
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Ville Syrjälä authored
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:
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Ville Syrjälä authored
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:
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Ville Syrjälä authored
There's a new "DSC disable" bit in the eDP VBT block. Define it. TODO: actually use it? Signed-off-by:
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Jani Nikula authored
Avoid the implicit dev_priv local variable use, and pass dev_priv explicitly to the PORT_DFT2_G4X register macro. Reviewed-by:
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Jani Nikula authored
Avoid the implicit dev_priv local variable use, and pass dev_priv explicitly to the PIPE_CRC_RES_* register macros. Reviewed-by:
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Jani Nikula authored
Avoid the implicit dev_priv local variable use, and pass dev_priv explicitly to the PIPE_CRC_CTL register macro. Reviewed-by:
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- 07 May, 2024 1 commit
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Karthikeyan Ramasubramanian authored
Starting BDB version 239, hdr_dpcd_refresh_timeout is introduced to backlight BDB data. Commit 70003456 ("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 e163cfb4 ("drm/i915/bios: Make copies of VBT data blocks")] Fixes: 70003456 ("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:
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- 06 May, 2024 4 commits
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Jani Nikula authored
Avoid the implicit dev_priv local variable use, and pass dev_priv explicitly to the PORT_ALPM_LFPS_CTL register macro. Reviewed-by:
Rodrigo Vivi <rodrigo.vivi@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/f8a3bbade94258852b8129c5f5918fb06ceab54b.1714471597.git.jani.nikula@intel.comSigned-off-by:
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Jani Nikula authored
Avoid the implicit dev_priv local variable use, and pass dev_priv explicitly to the PORT_ALPM_CTL register macro. Reviewed-by:
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Jani Nikula authored
Avoid the implicit dev_priv local variable use, and pass dev_priv explicitly to the ALPM_CTL2 register macro. Reviewed-by:
Jouni Högander <jouni.hogander@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/09acf2751cfd2f524e6ba97c3ac285495eae5c86.1714471597.git.jani.nikula@intel.comSigned-off-by:
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Jani Nikula authored
Avoid the implicit dev_priv local variable use, and pass dev_priv explicitly to the ALPM_CTL register macro. Reviewed-by:
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