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P10: fix Arrow Lake device IDs and DMC firmware mapping

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The driver incorrectly labeled Lunar Lake IDs (0x6420/64A0/64B0) as
Arrow Lake, and placed the real Arrow Lake IDs (0x7D41/7D51/etc.) in the
Meteor Lake bucket. This meant:
- Arrow Lake notebooks were misidentified as Meteor Lake
- Lunar Lake was completely missing from the device tables
- The 0xB640 ID (ARL-H) was also misfiled

Fix:
- Move real Arrow Lake IDs (0x7D41, 0x7D51, 0x7DD1, 0x7D67, 0xB640)
  to INTEL_GEN12_ARL_IDS
- Move Lunar Lake IDs (0x6420, 0x64A0, 0x64B0) to INTEL_GEN12_LNL_IDS
- Map Arrow Lake DMC firmware to INTEL_MTL_DMC_KEYS (mtl_dmc.bin),
  since Arrow Lake uses the same display IP 14.0 as Meteor Lake
- Remove Arrow Lake IDs from the Meteor Lake bucket

Per Linux 7.1 reference: Arrow Lake display engine is IP 14.0 (Xe_LPD+),
same as Meteor Lake — NOT Xe2. The i915-style register programming is
correct for Arrow Lake.
This commit is contained in:
Admin Pupkin
2026-05-29 17:49:11 +03:00
parent c0a93e5cfa
commit 0ccc233131
2 changed files with 22 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files
local/recipes/gpu/redox-drm/P10-arrow-lake-device-ids.patch
+21
View File
@@ -0,0 +1,21 @@
diff --git a/src/drivers/mod.rs b/src/drivers/mod.rs
--- a/src/drivers/mod.rs
+++ b/src/drivers/mod.rs
@@ -27 +27 @@ const INTEL_GEN12_MTL_IDS: &[u16] = &[
- 0x7D40, 0x7D41, 0x7D45, 0x7D51, 0x7D55, 0x7D60, 0x7D67, 0x7DD1, 0x7DD5,
+ 0x7D40, 0x7D45, 0x7D55, 0x7D60, 0x7DD5,
@@ -29,2 +29,2 @@ const INTEL_GEN12_MTL_IDS: &[u16] = &[
-const INTEL_GEN12_ARL_IDS: &[u16] = &[0x6420, 0x64A0, 0x64B0];
-const INTEL_GEN12_LNL_IDS: &[u16] = &[0xB640];
+const INTEL_GEN12_ARL_IDS: &[u16] = &[0x7D41, 0x7D51, 0x7DD1, 0x7D67, 0xB640];
+const INTEL_GEN12_LNL_IDS: &[u16] = &[0x6420, 0x64A0, 0x64B0];
diff --git a/src/main.rs b/src/main.rs
--- a/src/main.rs
+++ b/src/main.rs
@@ -297 +297,5 @@ fn intel_display_firmware_keys(device_id: u16) -> Option<&'static [&'static str]>
- 0x7D40 | 0x7D41 | 0x7D45 | 0x7D51 | 0x7D55 | 0x7D60 | 0x7D67 | 0x7DD1 | 0x7DD5 => {
+ 0x7D40 | 0x7D45 | 0x7D55 | 0x7D60 | 0x7DD5 => {
+ Some(INTEL_MTL_DMC_KEYS)
+ }
+ // Arrow Lake (ARL) — display IP 14.0, same DMC as Meteor Lake
+ 0x7D41 | 0x7D51 | 0x7DD1 | 0x7D67 | 0xB640 => {
local/recipes/gpu/redox-drm/recipe.toml
+1 -1
View File
@@ -1,6 +1,6 @@
[source]
path = "source"
patches = ["P1-intel-gen-gate.patch", "P2-intel-display-fixes.patch", "P3-intel-gen8-gen9-firmware.patch", "P4-virtio-gpu-driver.patch", "P5-virtio-auto-probe.patch", "P6-pcid-coordinate-handoff.patch", "P7-unreachable-pattern-cleanup.patch", "P8-terminal-scheme-ebadf.patch", "P9-virtio-handoff-mmio-map.patch"]
patches = ["P1-intel-gen-gate.patch", "P2-intel-display-fixes.patch", "P3-intel-gen8-gen9-firmware.patch", "P4-virtio-gpu-driver.patch", "P5-virtio-auto-probe.patch", "P6-pcid-coordinate-handoff.patch", "P7-unreachable-pattern-cleanup.patch", "P8-terminal-scheme-ebadf.patch", "P9-virtio-handoff-mmio-map.patch", "P10-arrow-lake-device-ids.patch"]
[build]
template = "cargo"