ipmi: Add Phytium KCS IPMI BMC driver support

This driver exposes the KCS interface on Phytium SOCs as a
character device. Such SOCs are commonly used as BMCs and this driver
implements the BMC side of the KCS interface.

Signed-off-by: Li Yuting <liyuting2071@phytium.com.cn>
Signed-off-by: Cheng Quan <chengquan@phytium.com.cn>
Signed-off-by: Chen Zhenhua <chenzhenhua@phytium.com.cn>
Signed-off-by: Chen Baozi <chenbaozi@phytium.com.cn>
Signed-off-by: Wang Yinfeng <wangyinfeng@phytium.com.cn>

drivers/char/ipmi/Kconfig

@@ -118,6 +118,18 @@ config ASPEED_KCS_IPMI_BMC
 	  The driver implements the BMC side of the KCS contorller, it
 	  provides the access of KCS IO space for BMC side.
 
+config PHYTIUM_KCS_IPMI_BMC
+	depends on ARCH_PHYTIUM
+	select IPMI_KCS_BMC
+	select REGMAP_MMIO
+	tristate "PHYTIUM KCS IPMI BMC driver"
+	help
+	  Provides a driver for the KCS (Keyboard Controller Style) IPMI
+	  interface found on Phytium SOCs.
+
+	  The driver implements the BMC side of the KCS contorller, it
+	  provides the access of KCS IO space for BMC side.
+
 config NPCM7XX_KCS_IPMI_BMC
 	depends on ARCH_NPCM || COMPILE_TEST
 	select IPMI_KCS_BMC

drivers/char/ipmi/Makefile

@@ -31,3 +31,4 @@ obj-$(CONFIG_ASPEED_KCS_IPMI_BMC) += kcs_bmc_aspeed.o
 obj-$(CONFIG_NPCM7XX_KCS_IPMI_BMC) += kcs_bmc_npcm7xx.o
 obj-$(CONFIG_IPMB_DEVICE_INTERFACE) += ipmb_dev_int.o
 obj-$(CONFIG_SSIF_IPMI_BMC) += ssif_bmc.o
+obj-$(CONFIG_PHYTIUM_KCS_IPMI_BMC) += kcs_bmc_phytium.o