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# SPDX-License-Identifier: GPL-2.0-only
#
# Counter devices
#
menuconfig COUNTER
tristate "Counter support"
help
This enables counter device support through the Generic Counter
interface. You only need to enable this, if you also want to enable
one or more of the counter device drivers below.
config I8254
tristate
select COUNTER
select REGMAP
help
Enables support for the i8254 interface library functions. The i8254
interface library provides functions to facilitate communication with
interfaces compatible with the venerable Intel 8254 Programmable
Interval Timer (PIT). The Intel 825x family of chips was first
released in the early 1980s but compatible interfaces are nowadays
typically found embedded in larger VLSI processing chips and FPGA
components.
If built as a module its name will be i8254.
if COUNTER
config 104_QUAD_8
tristate "ACCES 104-QUAD-8 driver"
depends on (PC104 && X86) || COMPILE_TEST
depends on HAS_IOPORT_MAP
select ISA_BUS_API
select REGMAP_MMIO
help
Say yes here to build support for the ACCES 104-QUAD-8 quadrature
encoder counter/interface device family (104-QUAD-8, 104-QUAD-4).
A counter's respective error flag may be cleared by performing a write
operation on the respective count value attribute. The 104-QUAD-8
counters may be set either directly or via the counter's preset
attribute.
The base port addresses for the devices may be configured via the base
array module parameter. The interrupt line numbers for the devices may
be configured via the irq array module parameter.
config FTM_QUADDEC
tristate "Flex Timer Module Quadrature decoder driver"
depends on SOC_LS1021A || COMPILE_TEST
depends on HAS_IOMEM && OF
help
Select this option to enable the Flex Timer Quadrature decoder
driver.
To compile this driver as a module, choose M here: the
module will be called ftm-quaddec.
config INTEL_QEP
tristate "Intel Quadrature Encoder Peripheral driver"
depends on X86
depends on PCI
help
Select this option to enable the Intel Quadrature Encoder Peripheral
driver.
To compile this driver as a module, choose M here: the module
will be called intel-qep.
config INTERRUPT_CNT
tristate "Interrupt counter driver"
depends on GPIOLIB
help
Select this option to enable interrupt counter driver. Any interrupt
source can be used by this driver as the event source.
To compile this driver as a module, choose M here: the
module will be called interrupt-cnt.
config MICROCHIP_TCB_CAPTURE
tristate "Microchip Timer Counter Capture driver"
depends on SOC_AT91SAM9 || SOC_SAM_V7 || COMPILE_TEST
depends on HAS_IOMEM && OF
select REGMAP_MMIO
help
Select this option to enable the Microchip Timer Counter Block
capture driver.
To compile this driver as a module, choose M here: the
module will be called microchip-tcb-capture.
config RZ_MTU3_CNT
tristate "Renesas RZ/G2L MTU3a counter driver"
depends on RZ_MTU3 || COMPILE_TEST
help
Enable support for MTU3a counter driver found on Renesas RZ/G2L alike
SoCs. This IP supports both 16-bit and 32-bit phase counting mode
support.
To compile this driver as a module, choose M here: the
module will be called rz-mtu3-cnt.
config STM32_LPTIMER_CNT
tristate "STM32 LP Timer encoder counter driver"
depends on MFD_STM32_LPTIMER || COMPILE_TEST
help
Select this option to enable STM32 Low-Power Timer quadrature encoder
and counter driver.
To compile this driver as a module, choose M here: the
module will be called stm32-lptimer-cnt.
config STM32_TIMER_CNT
tristate "STM32 Timer encoder counter driver"
depends on MFD_STM32_TIMERS || COMPILE_TEST
help
Select this option to enable STM32 Timer quadrature encoder
and counter driver.
To compile this driver as a module, choose M here: the
module will be called stm32-timer-cnt.
config TI_ECAP_CAPTURE
tristate "TI eCAP capture driver"
depends on ARCH_OMAP2PLUS || ARCH_DAVINCI_DA8XX || ARCH_KEYSTONE || ARCH_K3 || COMPILE_TEST
depends on HAS_IOMEM
select REGMAP_MMIO
help
Select this option to enable the Texas Instruments Enhanced Capture
(eCAP) driver in input mode.
It can be used to timestamp events (falling/rising edges) detected
on ECAP input signal.
To compile this driver as a module, choose M here: the module
will be called ti-ecap-capture.
config TI_EQEP
tristate "TI eQEP counter driver"
depends on (SOC_AM33XX || COMPILE_TEST)
select REGMAP_MMIO
help
Select this option to enable the Texas Instruments Enhanced Quadrature
Encoder Pulse (eQEP) counter driver.
To compile this driver as a module, choose M here: the module will be
called ti-eqep.
endif # COUNTER
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