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106b104137
This drivers allows to use the capture mode of the Timer Counter Block hardware block available in Microchip SoCs through the counter subsystem. Two functions of the counter are supported for the moment: period capture and quadrature decoder. The latter is only supported by the SAMA5 series of SoCs. For the period capture mode a basic setup has been chosen that will reset the counter each time the period is actually reached. Of course the device offers much more possibilities. For quadrature mode, both channel 0 and 1 must be configured even if we only capture the position (no revolution/rotation). Signed-off-by: Kamel Bouhara <kamel.bouhara@bootlin.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
84 lines
2.5 KiB
Text
84 lines
2.5 KiB
Text
# SPDX-License-Identifier: GPL-2.0-only
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#
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# Counter devices
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#
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menuconfig COUNTER
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tristate "Counter support"
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help
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This enables counter device support through the Generic Counter
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interface. You only need to enable this, if you also want to enable
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one or more of the counter device drivers below.
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if COUNTER
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config 104_QUAD_8
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tristate "ACCES 104-QUAD-8 driver"
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depends on PC104 && X86 && IIO
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select ISA_BUS_API
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help
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Say yes here to build support for the ACCES 104-QUAD-8 quadrature
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encoder counter/interface device family (104-QUAD-8, 104-QUAD-4).
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A counter's respective error flag may be cleared by performing a write
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operation on the respective count value attribute. Although the
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104-QUAD-8 counters have a 25-bit range, only the lower 24 bits may be
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set, either directly or via the counter's preset attribute. Interrupts
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are not supported by this driver.
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The base port addresses for the devices may be configured via the base
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array module parameter.
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config STM32_TIMER_CNT
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tristate "STM32 Timer encoder counter driver"
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depends on MFD_STM32_TIMERS || COMPILE_TEST
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help
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Select this option to enable STM32 Timer quadrature encoder
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and counter driver.
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To compile this driver as a module, choose M here: the
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module will be called stm32-timer-cnt.
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config STM32_LPTIMER_CNT
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tristate "STM32 LP Timer encoder counter driver"
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depends on (MFD_STM32_LPTIMER || COMPILE_TEST) && IIO
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help
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Select this option to enable STM32 Low-Power Timer quadrature encoder
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and counter driver.
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To compile this driver as a module, choose M here: the
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module will be called stm32-lptimer-cnt.
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config TI_EQEP
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tristate "TI eQEP counter driver"
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depends on (SOC_AM33XX || COMPILE_TEST)
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select REGMAP_MMIO
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help
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Select this option to enable the Texas Instruments Enhanced Quadrature
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Encoder Pulse (eQEP) counter driver.
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To compile this driver as a module, choose M here: the module will be
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called ti-eqep.
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config FTM_QUADDEC
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tristate "Flex Timer Module Quadrature decoder driver"
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depends on HAS_IOMEM && OF
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help
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Select this option to enable the Flex Timer Quadrature decoder
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driver.
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To compile this driver as a module, choose M here: the
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module will be called ftm-quaddec.
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config MICROCHIP_TCB_CAPTURE
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tristate "Microchip Timer Counter Capture driver"
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depends on HAS_IOMEM && OF
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select REGMAP_MMIO
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help
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Select this option to enable the Microchip Timer Counter Block
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capture driver.
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To compile this driver as a module, choose M here: the
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module will be called microchip-tcb-capture.
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endif # COUNTER
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