# Kconfig.dw - DesignWare SPI driver configuration options
#
#
# Copyright (c) 2015-2016 Intel Corporation
#
# SPDX-License-Identifier: Apache-2.0
#

config HAS_SPI_DW
	bool
	help
	  Signifies whether DesignWare SPI compatible HW is available

menuconfig SPI_DW
	bool "Designware SPI controller driver"
	depends on HAS_SPI_DW
	help
	  Enable support for Designware's SPI controllers.

if SPI_DW

config SPI_DW_ARC_AUX_REGS
	bool "Registers are part of ARC auxiliary registers"
	depends on ARC
	default y
	help
	  SPI IP block registers are part of user extended auxiliary
	  registers and thus their access is different than memory
	  mapped registers.

config SPI_DW_FIFO_DEPTH
	int "RX and TX FIFO Depth"
	help
	  Corresponds to the SSI_TX_FIFO_DEPTH and
	  SSI_RX_FIFO_DEPTH of the DesignWare Synchronous
	  Serial Interface. Depth ranges from 2-256.

config SPI_DW_ACCESS_WORD_ONLY
	bool "DesignWare SPI only allows word access"
	default n
	depends on SPI_DW
	help
	  In some case, e.g. ARC HS Development kit, the peripheral space of
	  DesignWare SPI only allows word access, byte access will raise
	  exception.

if SPI_0

config SPI_DW_PORT_0_INTERRUPT_SINGLE_LINE
	bool "Single interrupt line for all interrupts"
	default y
	help
	  Only one line is used to trigger interrupts: RX, TX and ERROR
	  interrupt go all through that line, undifferentiated.

config SPI_DW_PORT_0_CLOCK_GATE
	bool "Enable clock gating"
	depends on CLOCK_CONTROL

if SPI_DW_PORT_0_CLOCK_GATE

config SPI_DW_PORT_0_CLOCK_GATE_DRV_NAME
	string

config SPI_DW_PORT_0_CLOCK_GATE_SUBSYS
	int "Clock controller's subsystem"

endif # SPI_DW_PORT_0_CLOCK_GATE

endif # SPI_0

if SPI_1

config SPI_DW_PORT_1_INTERRUPT_SINGLE_LINE
	bool "Single interrupt line for all interrupts"
	default y

config SPI_DW_PORT_1_CLOCK_GATE
	bool "Enable clock gating"
	depends on CLOCK_CONTROL

if SPI_DW_PORT_1_CLOCK_GATE

config SPI_DW_PORT_1_CLOCK_GATE_DRV_NAME
	string

config SPI_DW_PORT_1_CLOCK_GATE_SUBSYS
	int "Clock controller's subsystem"

endif # SPI_DW_PORT_1_CLOCK_GATE

endif # SPI_1

if SPI_2

config SPI_DW_PORT_2_INTERRUPT_SINGLE_LINE
	bool "Single interrupt line for all interrupts"
	default y
	help
	  Only one line is used to trigger interrupts: RX, TX and ERROR
	  interrupt go all through that line, undifferentiated.

config SPI_DW_PORT_2_CLOCK_GATE
	bool "Enable clock gating"
	depends on CLOCK_CONTROL

if SPI_DW_PORT_2_CLOCK_GATE

config SPI_DW_PORT_2_CLOCK_GATE_DRV_NAME
	string
	default ""

config SPI_DW_PORT_2_CLOCK_GATE_SUBSYS
	int "Clock controller's subsystem"

endif # SPI_DW_PORT_2_CLOCK_GATE

endif # SPI_2

if SPI_3

config SPI_DW_PORT_3_INTERRUPT_SINGLE_LINE
	bool "Single interrupt line for all interrupts"
	default y
	help
	  Only one line is used to trigger interrupts: RX, TX and ERROR
	  interrupt go all through that line, undifferentiated.

config SPI_DW_PORT_3_CLOCK_GATE
	bool "Enable clock gating"
	depends on CLOCK_CONTROL

if SPI_DW_PORT_3_CLOCK_GATE

config SPI_DW_PORT_3_CLOCK_GATE_DRV_NAME
	string
	default ""

config SPI_DW_PORT_3_CLOCK_GATE_SUBSYS
	int "Clock controller's subsystem"

endif # SPI_DW_PORT_3_CLOCK_GATE

endif # SPI_3

endif # SPI_DW