# Copyright (c) 2021 ITE Corporation. All Rights Reserved.
# SPDX-License-Identifier: Apache-2.0

config ESPI_IT8XXX2
	bool "ITE IT8XXX2 embedded controller ESPI driver"
	default y
	depends on DT_HAS_ITE_IT8XXX2_ESPI_ENABLED
	depends on SOC_IT8XXX2
	help
	  Enable ITE IT8XXX2 ESPI driver.

if ESPI_IT8XXX2

config ESPI_OOB_CHANNEL
	default y

config ESPI_PERIPHERAL_8042_KBC
	default y

config ESPI_PERIPHERAL_HOST_IO
	default y

config ESPI_PERIPHERAL_DEBUG_PORT_80
	default y

config ESPI_PERIPHERAL_EC_HOST_CMD
	default y

choice IT8XXX2_H2RAM_HC_SIZE_CHOICE
	prompt "H2RAM space for ec host command"
	default IT8XXX2_H2RAM_HC_SIZE_256
	depends on ESPI_PERIPHERAL_EC_HOST_CMD

config IT8XXX2_H2RAM_HC_SIZE_16
	bool "16"

config IT8XXX2_H2RAM_HC_SIZE_32
	bool "32"

config IT8XXX2_H2RAM_HC_SIZE_64
	bool "64"

config IT8XXX2_H2RAM_HC_SIZE_128
	bool "128"

config IT8XXX2_H2RAM_HC_SIZE_256
	bool "256"

config IT8XXX2_H2RAM_HC_SIZE_512
	bool "512"

config IT8XXX2_H2RAM_HC_SIZE_1024
	bool "1024"

config IT8XXX2_H2RAM_HC_SIZE_2048
	bool "2048"

endchoice

config ESPI_IT8XXX2_HC_H2RAM_SIZE
	int
	depends on ESPI_PERIPHERAL_EC_HOST_CMD
	default 16 if IT8XXX2_H2RAM_HC_SIZE_16
	default 32 if IT8XXX2_H2RAM_HC_SIZE_32
	default 64 if IT8XXX2_H2RAM_HC_SIZE_64
	default 128 if IT8XXX2_H2RAM_HC_SIZE_128
	default 256 if IT8XXX2_H2RAM_HC_SIZE_256
	default 512 if IT8XXX2_H2RAM_HC_SIZE_512
	default 1024 if IT8XXX2_H2RAM_HC_SIZE_1024
	default 2048 if IT8XXX2_H2RAM_HC_SIZE_2048

config ESPI_PERIPHERAL_ACPI_SHM_REGION
	default y

choice IT8XXX2_H2RAM_ACPI_SHM_SIZE_CHOICE
	prompt "H2RAM space for ACPI shared memory region"
	default IT8XXX2_H2RAM_ACPI_SHM_SIZE_256
	depends on ESPI_PERIPHERAL_ACPI_SHM_REGION

config IT8XXX2_H2RAM_ACPI_SHM_SIZE_16
	bool "16"

config IT8XXX2_H2RAM_ACPI_SHM_SIZE_32
	bool "32"

config IT8XXX2_H2RAM_ACPI_SHM_SIZE_64
	bool "64"

config IT8XXX2_H2RAM_ACPI_SHM_SIZE_128
	bool "128"

config IT8XXX2_H2RAM_ACPI_SHM_SIZE_256
	bool "256"

config IT8XXX2_H2RAM_ACPI_SHM_SIZE_512
	bool "512"

config IT8XXX2_H2RAM_ACPI_SHM_SIZE_1024
	bool "1024"

config IT8XXX2_H2RAM_ACPI_SHM_SIZE_2048
	bool "2048"

endchoice

config ESPI_IT8XXX2_ACPI_SHM_H2RAM_SIZE
	int
	depends on ESPI_PERIPHERAL_ACPI_SHM_REGION
	default 16 if IT8XXX2_H2RAM_ACPI_SHM_SIZE_16
	default 32 if IT8XXX2_H2RAM_ACPI_SHM_SIZE_32
	default 64 if IT8XXX2_H2RAM_ACPI_SHM_SIZE_64
	default 128 if IT8XXX2_H2RAM_ACPI_SHM_SIZE_128
	default 256 if IT8XXX2_H2RAM_ACPI_SHM_SIZE_256
	default 512 if IT8XXX2_H2RAM_ACPI_SHM_SIZE_512
	default 1024 if IT8XXX2_H2RAM_ACPI_SHM_SIZE_1024
	default 2048 if IT8XXX2_H2RAM_ACPI_SHM_SIZE_2048

config ESPI_PERIPHERAL_CUSTOM_OPCODE
	default y

config ESPI_FLASH_CHANNEL
	default y

config ESPI_IT8XXX2_PNPCFG_DEVICE_KBC_MOUSE
	bool "ITE IT8XXX2 KBC mouse device"
	help
	  With this option enabled, EC will send IRQ12 signal to host when the
	  KBC mouse output buffer is full.

# On IT8xxx2 series, this configuration option has limitation:
# Port 80 and 81 I/O cycles share the same interrupt source and there is no
# status bit to indicate which cycle triggered the interrupt and data registers
# of these two ports are read only. Hence EC have to read these two data
# registers at the same time in the ISR.
# It means that the Host must alwasy write 2 bytes of data to port 80 otherwise
# port 81 data will not be updated.
config ESPI_IT8XXX2_PORT_81_CYCLE
	bool "EC accepts 0x81 I/O cycle from eSPI transaction"
	depends on ESPI_PERIPHERAL_DEBUG_PORT_80
	help
	  With this option enabled, EC will accept 0x81 I/O cycle from the Host.
	  This allows EC to accept 2 bytes of port 80 data written from the Host.
	  (e.g. using iotools: iotools io_write16 0x80 0x1234)

endif #ESPI_IT8XXX2