From e6d79751cd37f2cbe0d4bd721e59a4ca0d072a55 Mon Sep 17 00:00:00 2001
From: Felix Morgner <felix.morgner@ost.ch>
Date: Fri, 24 Jul 2026 01:12:48 +0200
Subject: kapi: let drivers choose their major number

---
 kapi/kapi/devices/device.hpp             | 4 ++++
 kapi/kapi/devices/driver.hpp             | 3 ++-
 kapi/kapi/devices/interface_registry.hpp | 4 ++--
 3 files changed, 8 insertions(+), 3 deletions(-)

(limited to 'kapi')

diff --git a/kapi/kapi/devices/device.hpp b/kapi/kapi/devices/device.hpp
index 70c5bd15..c26a4701 100644
--- a/kapi/kapi/devices/device.hpp
+++ b/kapi/kapi/devices/device.hpp
@@ -3,6 +3,7 @@
 
 // IWYU pragma: private, include <kapi/devices.hpp>
 
+#include <kapi/devices/driver.hpp>
 #include <kapi/devices/interface.hpp>
 
 #include <kstd/memory.hpp>
@@ -74,6 +75,9 @@ namespace kapi::devices
     //! Set the lifecycle state of this device.
     auto set_state(enum state state) -> void;
 
+    //! Get the driver, if any, currently bound to this device.
+    [[nodiscard]] auto bound_driver() const noexcept -> driver *;
+
     //! Bind this device to the given driver.
     auto bind_driver(kstd::weak_ptr<struct driver> driver) -> void;
 
diff --git a/kapi/kapi/devices/driver.hpp b/kapi/kapi/devices/driver.hpp
index 254f7977..837b47e4 100644
--- a/kapi/kapi/devices/driver.hpp
+++ b/kapi/kapi/devices/driver.hpp
@@ -3,7 +3,6 @@
 
 // IWYU pragma: private, include <kapi/devices.hpp>
 
-#include <kapi/devices/device.hpp>
 #include <kapi/devices/interface.hpp>
 
 #include <kstd/result.hpp>
@@ -17,6 +16,8 @@ namespace kapi::devices
   //! @addtogroup kapi-devices-kernel-defined
   //! @{
 
+  struct device;
+
   //! The base type for all device drivers.
   //!
   //! Drivers model the behavior necessary to drive a device or bus. They are stateless logic and are thus never
diff --git a/kapi/kapi/devices/interface_registry.hpp b/kapi/kapi/devices/interface_registry.hpp
index 9fad91e6..ae8b5c1a 100644
--- a/kapi/kapi/devices/interface_registry.hpp
+++ b/kapi/kapi/devices/interface_registry.hpp
@@ -30,9 +30,9 @@ namespace kapi::devices
           , m_implementation{implementation}
       {}
 
-      [[nodiscard]] constexpr auto device() const noexcept -> kstd::weak_ptr<device>
+      [[nodiscard]] constexpr auto device() const noexcept -> kstd::shared_ptr<device>
       {
-        return m_device;
+        return m_device.lock();
       }
 
       [[nodiscard]] constexpr auto name() const noexcept -> kstd::string const &
-- 
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