i3c: master: Enhance i3c_bus_type visibility for device searching & event monitoring

Improve the visibility of i3c_bus_type to facilitate searching for
i3c devices attached to the i3c bus. Enable other drivers to use
bus_register_notifier to monitor i3c bus device events.

Signed-off-by: Bhoomik Gupta <bhoomik.gupta@nxp.com>
Link: https://lore.kernel.org/r/20240708053835.3003986-1-bhoomik.gupta@nxp.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>

diff --git a/drivers/i3c/internals.h b/drivers/i3c/internals.h
index 4d99a35..433f608 100644 (file)
--- a/drivers/i3c/internals.h
+++ b/drivers/i3c/internals.h
@@ -10,8 +10,6 @@
 
 #include <linux/i3c/master.h>
 
-extern const struct bus_type i3c_bus_type;
-
 void i3c_bus_normaluse_lock(struct i3c_bus *bus);
 void i3c_bus_normaluse_unlock(struct i3c_bus *bus);
 

diff --git a/drivers/i3c/master.c b/drivers/i3c/master.c
index 3b4d6a8..a211dc4 100644 (file)
--- a/drivers/i3c/master.c
+++ b/drivers/i3c/master.c
@@ -342,6 +342,7 @@ const struct bus_type i3c_bus_type = {
        .probe = i3c_device_probe,
        .remove = i3c_device_remove,
 };
+EXPORT_SYMBOL_GPL(i3c_bus_type);
 
 static enum i3c_addr_slot_status
 i3c_bus_get_addr_slot_status(struct i3c_bus *bus, u16 addr)

diff --git a/include/linux/i3c/master.h b/include/linux/i3c/master.h
index 0ca27dd..074f632 100644 (file)
--- a/include/linux/i3c/master.h
+++ b/include/linux/i3c/master.h
@@ -33,6 +33,7 @@ enum {
 struct i3c_master_controller;
 struct i3c_bus;
 struct i3c_device;
+extern const struct bus_type i3c_bus_type;
 
 /**
  * struct i3c_i2c_dev_desc - Common part of the I3C/I2C device descriptor