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0be8907359
Add RZ/G2L MTU3a counter driver. This IP supports the following
phase counting modes on MTU1 and MTU2 channels
1) 16-bit phase counting modes on MTU1 and MTU2 channels.
2) 32-bit phase counting mode by cascading MTU1 and MTU2 channels.
This patch adds 3 counter value channels.
count0: 16-bit phase counter value channel on MTU1
count1: 16-bit phase counter value channel on MTU2
count2: 32-bit phase counter value channel by cascading
MTU1 and MTU2 channels.
The external input phase clock pin for the counter value channels
are as follows:
count0: "MTCLKA-MTCLKB"
count1: "MTCLKA-MTCLKB" or "MTCLKC-MTCLKD"
count2: "MTCLKA-MTCLKB" or "MTCLKC-MTCLKD"
Use the sysfs variable "external_input_phase_clock_select" to select the
external input phase clock pin and "cascade_counts_enable" to enable/
disable cascading of channels.
Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
Reviewed-by: William Breathitt Gray <william.gray@linaro.org>
Acked-by: William Breathitt Gray <william.gray@linaro.org>
Signed-off-by: Lee Jones <lee@kernel.org>
Link: https://lore.kernel.org/r/20230330111632.169434-5-biju.das.jz@bp.renesas.com
134 lines
4.1 KiB
Plaintext
134 lines
4.1 KiB
Plaintext
# 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) || COMPILE_TEST
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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.
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The base port addresses for the devices may be configured via the base
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array module parameter. The interrupt line numbers for the devices may
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be configured via the irq array module parameter.
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config FTM_QUADDEC
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tristate "Flex Timer Module Quadrature decoder driver"
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depends on SOC_LS1021A || COMPILE_TEST
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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 INTEL_QEP
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tristate "Intel Quadrature Encoder Peripheral driver"
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depends on X86
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depends on PCI
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help
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Select this option to enable the Intel Quadrature Encoder Peripheral
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driver.
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To compile this driver as a module, choose M here: the module
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will be called intel-qep.
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config INTERRUPT_CNT
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tristate "Interrupt counter driver"
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depends on GPIOLIB
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help
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Select this option to enable interrupt counter driver. Any interrupt
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source can be used by this driver as the event source.
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To compile this driver as a module, choose M here: the
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module will be called interrupt-cnt.
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config MICROCHIP_TCB_CAPTURE
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tristate "Microchip Timer Counter Capture driver"
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depends on SOC_AT91SAM9 || SOC_SAM_V7 || COMPILE_TEST
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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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config RZ_MTU3_CNT
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tristate "Renesas RZ/G2L MTU3a counter driver"
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depends on RZ_MTU3 || COMPILE_TEST
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help
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Enable support for MTU3a counter driver found on Renesas RZ/G2L alike
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SoCs. This IP supports both 16-bit and 32-bit phase counting mode
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support.
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To compile this driver as a module, choose M here: the
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module will be called rz-mtu3-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
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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 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 TI_ECAP_CAPTURE
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tristate "TI eCAP capture driver"
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depends on ARCH_OMAP2PLUS || ARCH_DAVINCI_DA8XX || ARCH_KEYSTONE || ARCH_K3 || COMPILE_TEST
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depends on HAS_IOMEM
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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 Capture
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(eCAP) driver in input mode.
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It can be used to timestamp events (falling/rising edges) detected
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on ECAP input signal.
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To compile this driver as a module, choose M here: the module
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will be called ti-ecap-capture.
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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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endif # COUNTER
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