Fix panthor drm driver

README.md

@@ -689,5 +689,6 @@ Example output:
 - GPU usage and memory usage shows usage of current process, not total system usage (it's an issue on intel's side)
 - Integrated Intel GPUs are **limited** due to lack of hwmon interface (it's an issue on intel's side, [i915 source](https://github.com/torvalds/linux/blob/5fc31936081919a8572a3d644f3fbb258038f337/drivers/gpu/drm/i915/i915_hwmon.c#L914-L916), [xe source](https://github.com/torvalds/linux/blob/5fc31936081919a8572a3d644f3fbb258038f337/drivers/gpu/drm/xe/xe_hwmon.c#L824-L826))
 
-#### Panfrost notes
-- GPU usage requires `echo 1 | sudo tee /sys/class/drm/renderD*/device/profiling`
+#### Panfrost and Panthor notes
+- GPU usage requires `echo N | sudo tee /sys/class/drm/renderD*/device/profiling`
+  - Where N is a number, 1 for panfrost and 3 for panthor.

src/gpu.h

@@ -44,7 +44,7 @@ class GPU {
 
                 if (
                     driver == "i915" || driver == "xe" || driver == "panfrost" ||
-                    driver == "msm_dpu" || driver == "msm_drm"
+                    driver == "msm_dpu" || driver == "msm_drm" || driver == "panthor"
                 )
                     fdinfo = std::make_unique<GPU_fdinfo>(driver, pci_dev, drm_node);
         }
@@ -202,8 +202,8 @@ class GPUS {
         std::string get_pci_device_address(const std::string& drm_card_path);
         std::string get_driver(const std::string& node);
 
-        const std::array<std::string, 7> supported_drivers = {
-            "amdgpu", "nvidia", "i915", "xe", "panfrost", "msm_dpu", "msm_drm"
+        const std::array<std::string, 8> supported_drivers = {
+            "amdgpu", "nvidia", "i915", "xe", "panfrost", "msm_dpu", "msm_drm", "panthor"
         };
 };
 

src/gpu_fdinfo.cpp

@@ -4,6 +4,7 @@
 #include "hud_elements.h"
 #endif
 
+#include <fstream>
 namespace fs = ghc::filesystem;
 
 void GPU_fdinfo::find_fd()
@@ -168,7 +169,7 @@ void GPU_fdinfo::find_hwmon_sensors()
 
     if (module == "msm")
         hwmon = find_hwmon_sensor_dir("gpu");
-    else if (module == "panfrost")
+    else if (module == "panfrost" || module == "panthor")
         hwmon = find_hwmon_sensor_dir("gpu_thermal");
     else
         hwmon = find_hwmon_dir();
@@ -529,7 +530,10 @@ int GPU_fdinfo::get_gpu_clock()
 {
     if (module == "panfrost")
         return get_gpu_clock_panfrost();
-
+
+    if (module == "panthor")
+        return get_gpu_clock_panthor();
+
     if (!gpu_clock_stream.is_open())
         return 0;
 
@@ -545,6 +549,20 @@ int GPU_fdinfo::get_gpu_clock()
     return std::stoi(clock_str);
 }
 
+int GPU_fdinfo::get_gpu_clock_panthor() {
+    if (fdinfo_data.empty())
+        return 0;
+
+    auto freq_str = fdinfo_data[0]["drm-curfreq-panthor"];
+
+    if (freq_str.empty())
+        return 0;
+
+    float freq = std::stoull(freq_str) / 1'000'000;
+
+    return std::round(freq);
+}
+
 int GPU_fdinfo::get_gpu_clock_panfrost() {
     if (fdinfo_data.empty())
         return 0;
@@ -591,6 +609,7 @@ int GPU_fdinfo::get_throttling_status()
         check_throttle_reasons(throttle_current_streams) * GPU_throttle_status::CURRENT +
         check_throttle_reasons(throttle_temp_streams) * GPU_throttle_status::TEMP;
     // No throttle reasons for OTHER currently
+
     if (reasons == 0)
         reasons |= GPU_throttle_status::OTHER;
 

src/gpu_fdinfo.h

@@ -98,6 +98,8 @@ class GPU_fdinfo {
     uint64_t get_gpu_time_panfrost();
     int get_gpu_clock_panfrost();
 
+    int get_gpu_clock_panthor();
+
     std::ifstream throttle_status_stream;
     std::vector<std::ifstream> throttle_power_streams;
     std::vector<std::ifstream> throttle_current_streams;
@@ -150,6 +152,9 @@ class GPU_fdinfo {
         } else if (module == "panfrost") {
             drm_engine_type = "drm-engine-fragment";
             drm_memory_type = "drm-resident-memory";
+        } else if (module == "panthor") {
+            drm_engine_type = "drm-engine-panthor";
+            drm_memory_type = "panthor-resident-memory";
         }
 
         if (fdinfo_data.size() > 0 &&