# Copyright (c) 2021 Gunar Schorcht
#
# This file is subject to the terms and conditions of the GNU Lesser
# General Public License v2.1. See the file LICENSE in the top level
# directory for more details.
#

menuconfig MODULE_PCF857X
    bool
    prompt "PCF857x Remote I/O Expander for I2C Bus" if !(MODULE_SAUL_DEFAULT && HAVE_PCF857X)
    default (MODULE_SAUL_DEFAULT && HAVE_PCF857X)
    depends on HAS_PERIPH_GPIO
    depends on HAS_PERIPH_I2C
    depends on TEST_KCONFIG
    select MODULE_PERIPH_GPIO
    select MODULE_PERIPH_I2C
    help
        Driver for Texas Instruments PCF857X I2C I/O expanders.
        The driver supports the PCF8574, PCF8574A, and PCF8575 variants.
        Select the variants used by your application.

if MODULE_PCF857X

config MODULE_PCF8574
    bool "PCF8574  Remote  8-Bit I/O is used"
    default HAVE_PCF8574

config MODULE_PCF8574A
    bool "PCF8574A Remote  8-Bit I/O is used"
    default HAVE_PCF8574A

config MODULE_PCF8575
    bool "PCF8575  Remote 16-Bit I/O is used"
    default (!(HAVE_PCF8574A || HAVE_PCF8574) || HAVE_PCF8575)

config MODULE_PCF857X_IRQ
    bool "Interrupt support for PCF857x I/O Expander pins"
    default PCF857X_IRQ
    depends on MODULE_PCF857X
    depends on HAS_PERIPH_GPIO_IRQ
    select MODULE_PERIPH_GPIO_IRQ
    select MODULE_EVENT
    select MODULE_EVENT_THREAD
    help
        To use the IRQs the MODULE_EVENT_THREAD symbol should be set.

choice
    bool "Thread priority"
    depends on MODULE_PCF857X_IRQ
    default MODULE_PCF857X_IRQ_MEDIUM
    help
        To process IRQs an event thread is used. The MODULE_EVENT_THREAD
        symbol should be set. Choose a priority for the thread that
        processes the IRQs. The default is medium priority.

config MODULE_PCF857X_IRQ_LOW
    bool "Low"
    select MODULE_EVENT_THREAD_LOW

config MODULE_PCF857X_IRQ_MEDIUM
    bool "Medium"
    select MODULE_EVENT_THREAD_MEDIUM

config MODULE_PCF857X_IRQ_HIGHEST
    bool "Highest"
    select MODULE_EVENT_THREAD_HIGHEST

endchoice

endif # MODULE_PCF857X

config HAVE_PCF857X
    bool
    help
      Indicates that a PCF857x Remote I/O Expander is present.

config HAVE_PCF8574
    bool
    select HAVE_PCF857X
    help
      Indicates that a PCF8574 Remote I/O Expander is present.

config HAVE_PCF8574A
    bool
    select HAVE_PCF857X
    help
      Indicates that a PCF8574A Remote I/O Expander is present.

config HAVE_PCF8575
    bool
    select HAVE_PCF857X
    help
      Indicates that a PCF8575 Remote I/O Expander is present.

config HAVE_PCF857X_IRQ
    bool
    select HAVE_PCF857X
    help
      Indicates that a PCF857x Remote I/O Expander is present with the
      interrupt pin wired.