[ROCM-1036] Dynamic fan support detection in set -h (#2721)

Show "N/A" for ASICs without fan support
`amd-smi set -h` fan help text will be dynamic instead of "0-255 or 0-100%"

Signed-off-by: Sumanth Gavini <sumanth.gavini@amd.com>

projects/amdsmi/amdsmi_cli/amdsmi_helpers.py

@@ -973,6 +973,35 @@ class AMDSMIHelpers():
         return value
 
 
+    def get_fan_support(self):
+        """Check if fan control is supported on the first device.
+
+        Returns:
+            str: "0-255 or 0-100%%" if fan control is supported, "N/A" otherwise
+        """
+        device_handles = amdsmi_interface.amdsmi_get_processor_handles()
+        for dev in device_handles:
+            try:
+                # Try to get both fan speed and max fan speed
+                # If both succeed, fan control is supported
+                _ = amdsmi_interface.amdsmi_get_gpu_fan_speed(dev, 0)
+                _ = amdsmi_interface.amdsmi_get_gpu_fan_speed_max(dev, 0)
+                # Fan control is supported on this device
+                return "0-255 or 0-100%%"
+            except amdsmi_interface.AmdSmiLibraryException as e:
+                logging.debug(f"AMDSMIHelpers.get_fan_support - Unable to get fan info for device {dev}: {str(e)}")
+                if e.err_code == amdsmi_interface.amdsmi_wrapper.AMDSMI_STATUS_NOT_SUPPORTED:
+                    logging.debug(f"AMDSMIHelpers.get_fan_support - Device {dev} does not support fan control")
+                    return "N/A"
+                return "N/A"
+            except Exception as e:
+                logging.debug(f"AMDSMIHelpers.get_fan_support - Unexpected error occurred --> Unable to get fan info for device {dev}: {str(e)}")
+                return "N/A"
+            # Only check the first device (socket device, never partition)
+            break
+        return "N/A"
+
+
     def get_soc_pstates(self):
         device_handles = amdsmi_interface.amdsmi_get_processor_handles()
         soc_pstate_profile_list = []

projects/amdsmi/amdsmi_cli/amdsmi_parser.py

@@ -1354,7 +1354,8 @@ class AMDSMIParser(argparse.ArgumentParser):
         # Help text for Arguments only on BM platforms
         if self.helpers.is_amdgpu_initialized():
             if self.helpers.is_baremetal():
-                set_fan_help = "Set GPU fan speed (0-255 or 0-100%%)"
+                fan_support = self.helpers.get_fan_support()
+                set_fan_help = f"Set GPU fan speed ({fan_support})"
                 perf_level_help_choices_str = ", ".join(self.helpers.get_perf_levels()[0][0:-1])
                 set_perf_level_help = f"Set one of the following performance levels:\n\t{perf_level_help_choices_str}"
                 power_profile_choices_str = ", ".join(self.helpers.get_power_profiles()[0:-1])