drivers: i3c: add controller handoff

drivers/i3c/CMakeLists.txt

@@ -11,6 +11,14 @@ zephyr_library_sources(
   i3c_common.c
 )
 
+if(CONFIG_I3C_NUM_OF_DESC_MEM_SLABS GREATER 0)
+  zephyr_library_sources(i3c_mem_slab.c)
+endif()
+
+if(CONFIG_I3C_I2C_NUM_OF_DESC_MEM_SLABS GREATER 0)
+  zephyr_library_sources(i3c_i2c_mem_slab.c)
+endif()
+
 zephyr_library_sources_ifdef(
   CONFIG_USERSPACE
   i3c_handlers.c

drivers/i3c/Kconfig

@@ -112,6 +112,22 @@ config I3C_INIT_RSTACT
 	  This determines whether the bus initialization routine
 	  sends a reset action command to I3C targets.
 
+config I3C_NUM_OF_DESC_MEM_SLABS
+	int "Number of I3C Device Descriptors Mem Slabs"
+	default 3
+	help
+	  This is the number of memory slabs allocated from when
+	  there is a device encounted through ENTDAA or DEFTGTS that
+	  is not within known I3C devices.
+
+config I3C_I2C_NUM_OF_DESC_MEM_SLABS
+	int "Number of I2C Device Descriptors Mem Slabs"
+	default 3
+	help
+	  This is the number of memory slabs allocated from when
+	  there is a device encounted through DEFTGTS that is not
+	  within known I2C devices.
+
 comment "Device Drivers"
 
 rsource "Kconfig.nxp"

drivers/i3c/i3c_ccc.c

@@ -910,3 +910,28 @@ int i3c_ccc_do_setbuscon(const struct device *controller,
 
 	return i3c_do_ccc(controller, &ccc_payload);
 }
+
+int i3c_ccc_do_getacccr(const struct i3c_device_desc *target,
+			 struct i3c_ccc_address *handoff_address)
+{
+	struct i3c_ccc_payload ccc_payload;
+	struct i3c_ccc_target_payload ccc_tgt_payload;
+	int ret;
+
+	__ASSERT_NO_MSG(target != NULL);
+	__ASSERT_NO_MSG(handoff_address != NULL);
+
+	ccc_tgt_payload.addr = target->dynamic_addr;
+	ccc_tgt_payload.rnw = 1;
+	ccc_tgt_payload.data = &handoff_address->addr;
+	ccc_tgt_payload.data_len = 1;
+
+	memset(&ccc_payload, 0, sizeof(ccc_payload));
+	ccc_payload.ccc.id = I3C_CCC_GETACCCR;
+	ccc_payload.targets.payloads = &ccc_tgt_payload;
+	ccc_payload.targets.num_targets = 1;
+
+	ret = i3c_do_ccc(target->bus, &ccc_payload);
+
+	return ret;
+}