From ec12771be6c15a34696c7c5bbf6cd8c2b05e81d9 Mon Sep 17 00:00:00 2001
From: khsiao-google <khsiao@google.com>
Date: Tue, 5 Aug 2025 05:56:00 +0000
Subject: [PATCH] Support HCI_LE_Set_Host_Feature_Command

---
 bumble/controller.py |  8 ++++++++
 bumble/device.py     | 11 ++++++++++-
 2 files changed, 18 insertions(+), 1 deletion(-)

diff --git a/bumble/controller.py b/bumble/controller.py
index 8666481..7e4e1f4 100644
--- a/bumble/controller.py
+++ b/bumble/controller.py
@@ -1855,3 +1855,11 @@ class Controller:
         See Bluetooth spec Vol 4, Part E - 7.8.110 LE Remove ISO Data Path Command
         '''
         return struct.pack('<BH', HCI_SUCCESS, command.connection_handle)
+
+    def on_hci_le_set_host_feature_command(
+        self, _command: hci.HCI_LE_Set_Host_Feature_Command
+    ):
+        '''
+        See Bluetooth spec Vol 4, Part E - 7.8.115 LE Set Host Feature command
+        '''
+        return bytes([HCI_SUCCESS])
diff --git a/bumble/device.py b/bumble/device.py
index 906ad2d..c931281 100644
--- a/bumble/device.py
+++ b/bumble/device.py
@@ -2066,7 +2066,7 @@ class DeviceConfiguration:
     le_simultaneous_enabled: bool = False
     le_privacy_enabled: bool = False
     le_rpa_timeout: int = DEVICE_DEFAULT_LE_RPA_TIMEOUT
-    le_subrate_enabled: bool = True
+    le_subrate_enabled: bool = False
     classic_enabled: bool = False
     classic_sc_enabled: bool = True
     classic_ssp_enabled: bool = True
@@ -2799,6 +2799,15 @@ class Device(utils.CompositeEventEmitter):
                     check_result=True,
                 )
 
+            if self.le_subrate_enabled:
+                await self.send_command(
+                    hci.HCI_LE_Set_Host_Feature_Command(
+                        bit_number=hci.LeFeature.CONNECTION_SUBRATING_HOST_SUPPORT,
+                        bit_value=1,
+                    ),
+                    check_result=True,
+                )
+
             if self.config.channel_sounding_enabled:
                 await self.send_command(
                     hci.HCI_LE_Set_Host_Feature_Command(