drivers: eth_smsc911x: Add driver for SMSC9118 aka LAN9118 chip

As emulated by QEMU. SMSC9118 is compatible with SMSC9220 as used in
ARM MPS2 board, as well as SMSC9115/6/7/etc. devices.

Portions of the code are based on mbedOS code from its
targets/TARGET_ARM_SSG/TARGET_CM3DS_MPS2/device/drivers/smsc9220_eth.c

eth_smsc9220_priv.h originally comes from Arm mbedOS file:

targets/TARGET_ARM_SSG/TARGET_CM3DS_MPS2/device/drivers/smsc9220_eth.h

augmented with struct & defines from:

targets/TARGET_ARM_SSG/TARGET_CM3DS_MPS2/device/CM3DS.h

and renamed as eth_smsc911x_priv.h to follow Zephyr conventions.

Then, following changes applied:

Changes to build under Zephyr, changes to use symbolic constants
and field access helpers, typo fixes, etc.

Signed-off-by: Paul Sokolovsky <[email protected]>

Author: pfalcon

drivers/ethernet/CMakeLists.txt

@@ -10,6 +10,7 @@ zephyr_sources_ifdef(CONFIG_ETH_DW		eth_dw.c)
 zephyr_sources_ifdef(CONFIG_ETH_E1000		eth_e1000.c)
 zephyr_sources_ifdef(CONFIG_ETH_ENC28J60	eth_enc28j60.c)
 zephyr_sources_ifdef(CONFIG_ETH_MCUX		eth_mcux.c)
+zephyr_sources_ifdef(CONFIG_ETH_SMSC911X	eth_smsc911x.c)
 zephyr_sources_ifdef(CONFIG_ETH_STM32_HAL	eth_stm32_hal.c)
 
 if(CONFIG_ETH_NATIVE_POSIX)

drivers/ethernet/Kconfig

@@ -30,6 +30,7 @@ source "drivers/ethernet/Kconfig.dw"
 source "drivers/ethernet/Kconfig.e1000"
 source "drivers/ethernet/Kconfig.sam_gmac"
 source "drivers/ethernet/Kconfig.stm32_hal"
+source "drivers/ethernet/Kconfig.smsc911x"
 source "drivers/ethernet/Kconfig.native_posix"
 source "drivers/ethernet/Kconfig.stellaris"
 

drivers/ethernet/Kconfig.smsc911x

@@ -0,0 +1,20 @@
+#
+# Copyright (c) 2018 Linaro Limited
+#
+# SPDX-License-Identifier: Apache-2.0
+#
+
+menuconfig ETH_SMSC911X
+	bool "SMSC911x/9220 Ethernet driver"
+	depends on NET_L2_ETHERNET
+	help
+	  Enable driver for SMSC/LAN911x/9220 family of chips.
+
+# Hidden option
+config ETH_NIC_MODEL
+	string
+	default "lan9118"
+	depends on ETH_SMSC911X
+	help
+	  Tells what Qemu network model to use. This value is given as
+	  a parameter to -nic qemu command line option.