drm/tyr: gpu: fix GpuInfo::log model/version decoding

GpuInfo::log() was decoding GPU_ID like this:

  major = (self.gpu_id >> 16) & 0xff;
  minor = (self.gpu_id >> 8) & 0xff;
  status = self.gpu_id & 0xff;

That does not match the Mali GPU_ID layout and mixes unrelated
fields. Due to that, model detection becomes `mali-unknown` on
rk3588s which is wrong.

We can already get all the version information with a single
GpuId::from call (less code and cleaner), so this patch uses it.

Also renamed `GpuModels` fields from `major/minor` to
`arch_major/prod_major` to reflect their real meaning.

This change was tested on Orange Pi 5 (rk3588s) board and the
results are as follows:

Before this change:

$ dmesg | grep 'tyr'
[   19.698338] tyr fb000000.gpu: mali-unknown id 0xa867 major 0x67 minor 0x0 status 0x5
[   19.699050] tyr fb000000.gpu: Features: L2:0x7120306 Tiler:0x809 Mem:0x301 MMU:0x2830 AS:0xff
[   19.699817] tyr fb000000.gpu: shader_present=0x0000000000050005 l2_present=0x0000000000000001 tiler_present=0x0000000000000001
[   19.702493] tyr fb000000.gpu: Tyr initialized correctly.

After this change:

$ dmesg | grep 'tyr'
[   19.591692] tyr fb000000.gpu: mali-g610 id 0xa867 major 0x0 minor 0x0 status 0x5
[   19.592374] tyr fb000000.gpu: Features: L2:0x7120306 Tiler:0x809 Mem:0x301 MMU:0x2830 AS:0xff
[   19.593141] tyr fb000000.gpu: shader_present=0x0000000000050005 l2_present=0x0000000000000001 tiler_present=0x0000000000000001
[   19.595831] tyr fb000000.gpu: Tyr initialized correctly.

Signed-off-by: Onur Özkan <work@onurozkan.dev>
Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com>
Tested-by: Alvin Sun <sk.alvin.x@gmail.com>
Link: https://patch.msgid.link/20260210183812.261142-1-work@onurozkan.dev
Signed-off-by: Alice Ryhl <aliceryhl@google.com>

1 files changed, 9 insertions, 11 deletions

diff --git a/drivers/gpu/drm/tyr/gpu.rs b/drivers/gpu/drm/tyr/gpu.rs
index 64ca8311d4e8..ca2a6309e760 100644
--- a/drivers/gpu/drm/tyr/gpu.rs
+++ b/drivers/gpu/drm/tyr/gpu.rs
@@ -84,13 +84,11 @@ impl GpuInfo {
     }
 
     pub(crate) fn log(&self, pdev: &platform::Device) {
-        let major = (self.gpu_id >> 16) & 0xff;
-        let minor = (self.gpu_id >> 8) & 0xff;
-        let status = self.gpu_id & 0xff;
+        let gpu_id = GpuId::from(self.gpu_id);
 
         let model_name = if let Some(model) = GPU_MODELS
             .iter()
-            .find(|&f| f.major == major && f.minor == minor)
+            .find(|&f| f.arch_major == gpu_id.arch_major && f.prod_major == gpu_id.prod_major)
         {
             model.name
         } else {
@@ -102,9 +100,9 @@ impl GpuInfo {
             "mali-{} id 0x{:x} major 0x{:x} minor 0x{:x} status 0x{:x}",
             model_name,
             self.gpu_id >> 16,
-            major,
-            minor,
-            status
+            gpu_id.ver_major,
+            gpu_id.ver_minor,
+            gpu_id.ver_status
         );
 
         dev_info!(
@@ -166,14 +164,14 @@ unsafe impl AsBytes for GpuInfo {}
 
 struct GpuModels {
     name: &'static str,
-    major: u32,
-    minor: u32,
+    arch_major: u32,
+    prod_major: u32,
 }
 
 const GPU_MODELS: [GpuModels; 1] = [GpuModels {
     name: "g610",
-    major: 10,
-    minor: 7,
+    arch_major: 10,
+    prod_major: 7,
 }];
 
 #[allow(dead_code)]