[dm][nvmem] support nvmem

Support for NVMEM(Non Volatile Memory) devices like EEPROM, EFUSES...

Signed-off-by: GuEe-GUI <[email protected]>

Author: GuEe-GUI

components/drivers/Kconfig

@@ -32,6 +32,7 @@ rsource "regulator/Kconfig"
 rsource "reset/Kconfig"
 rsource "thermal/Kconfig"
 rsource "virtio/Kconfig"
+rsource "nvmem/Kconfig"
 rsource "dma/Kconfig"
 rsource "mfd/Kconfig"
 rsource "ofw/Kconfig"

components/drivers/include/rtdevice.h

@@ -118,6 +118,10 @@ extern "C" {
 #ifdef RT_USING_THERMAL
 #include "drivers/thermal.h"
 #endif /* RT_USING_THERMAL */
+
+#ifdef RT_USING_NVMEM
+#include "drivers/nvmem.h"
+#endif /* RT_USING_NVMEM */
 #endif /* RT_USING_DM */
 
 #ifdef RT_USING_RTC

components/drivers/nvmem/Kconfig

@@ -0,0 +1,12 @@
+menuconfig RT_USING_NVMEM
+    bool "Using Non Volatile Memory (NVMEM) device drivers"
+    depends on RT_USING_DM
+    depends on RT_USING_OFW
+    depends on RT_USING_PIN
+    select RT_USING_ADT
+    select RT_USING_ADT_REF
+    default n
+
+if RT_USING_NVMEM
+    osource "$(SOC_DM_NVMEM_DIR)/Kconfig"
+endif

components/drivers/nvmem/SConscript

@@ -0,0 +1,15 @@
+from building import *
+
+group = []
+
+if not GetDepend(['RT_USING_NVMEM']):
+    Return('group')
+
+cwd = GetCurrentDir()
+CPPPATH = [cwd + '/../include']
+
+src = ['nvmem.c']
+
+group = DefineGroup('DeviceDrivers', src, depend = [''], CPPPATH = CPPPATH)
+
+Return('group')