1# SPDX-License-Identifier: GPL-2.0-only
  2#
  3# Counter devices
  4#
  5
  6config I8254
  7	tristate
  8	select COUNTER
  9	select REGMAP
 10	help
 11	  Enables support for the i8254 interface library functions. The i8254
 12	  interface library provides functions to facilitate communication with
 13	  interfaces compatible with the venerable Intel 8254 Programmable
 14	  Interval Timer (PIT). The Intel 825x family of chips was first
 15	  released in the early 1980s but compatible interfaces are nowadays
 16	  typically found embedded in larger VLSI processing chips and FPGA
 17	  components.
 18
 19	  If built as a module its name will be i8254.
 20
 21menuconfig COUNTER
 22	tristate "Counter support"
 23	help
 24	  This enables counter device support through the Generic Counter
 25	  interface. You only need to enable this, if you also want to enable
 26	  one or more of the counter device drivers below.
 27
 28if COUNTER
 29
 30config 104_QUAD_8
 31	tristate "ACCES 104-QUAD-8 driver"
 32	depends on (PC104 && X86) || COMPILE_TEST
 33	depends on HAS_IOPORT_MAP
 34	select ISA_BUS_API
 35	select REGMAP_MMIO
 36	help
 37	  Say yes here to build support for the ACCES 104-QUAD-8 quadrature
 38	  encoder counter/interface device family (104-QUAD-8, 104-QUAD-4).
 39
 40	  A counter's respective error flag may be cleared by performing a write
 41	  operation on the respective count value attribute. The 104-QUAD-8
 42	  counters may be set either directly or via the counter's preset
 43	  attribute.
 44
 45	  The base port addresses for the devices may be configured via the base
 46	  array module parameter. The interrupt line numbers for the devices may
 47	  be configured via the irq array module parameter.
 48
 49config FTM_QUADDEC
 50	tristate "Flex Timer Module Quadrature decoder driver"
 51	depends on SOC_LS1021A || COMPILE_TEST
 52	depends on HAS_IOMEM && OF
 53	help
 54	  Select this option to enable the Flex Timer Quadrature decoder
 55	  driver.
 56
 57	  To compile this driver as a module, choose M here: the
 58	  module will be called ftm-quaddec.
 59
 60config INTEL_QEP
 61	tristate "Intel Quadrature Encoder Peripheral driver"
 62	depends on X86
 63	depends on PCI
 64	help
 65	  Select this option to enable the Intel Quadrature Encoder Peripheral
 66	  driver.
 67
 68	  To compile this driver as a module, choose M here: the module
 69	  will be called intel-qep.
 70
 71config INTERRUPT_CNT
 72	tristate "Interrupt counter driver"
 73	depends on GPIOLIB
 74	help
 75	  Select this option to enable interrupt counter driver. Any interrupt
 76	  source can be used by this driver as the event source.
 77
 78	  To compile this driver as a module, choose M here: the
 79	  module will be called interrupt-cnt.
 80
 81config MICROCHIP_TCB_CAPTURE
 82	tristate "Microchip Timer Counter Capture driver"
 83	depends on SOC_AT91SAM9 || SOC_SAM_V7 || COMPILE_TEST
 84	depends on HAS_IOMEM && OF
 85	select REGMAP_MMIO
 86	help
 87	  Select this option to enable the Microchip Timer Counter Block
 88	  capture driver.
 89
 90	  To compile this driver as a module, choose M here: the
 91	  module will be called microchip-tcb-capture.
 92
 93config RZ_MTU3_CNT
 94	tristate "Renesas RZ/G2L MTU3a counter driver"
 95	depends on RZ_MTU3
 96	help
 97	  Enable support for MTU3a counter driver found on Renesas RZ/G2L alike
 98	  SoCs. This IP supports both 16-bit and 32-bit phase counting mode
 99	  support.
100
101	  To compile this driver as a module, choose M here: the
102	  module will be called rz-mtu3-cnt.
103
104config STM32_LPTIMER_CNT
105	tristate "STM32 LP Timer encoder counter driver"
106	depends on MFD_STM32_LPTIMER || COMPILE_TEST
107	help
108	  Select this option to enable STM32 Low-Power Timer quadrature encoder
109	  and counter driver.
110
111	  To compile this driver as a module, choose M here: the
112	  module will be called stm32-lptimer-cnt.
113
114config STM32_TIMER_CNT
115	tristate "STM32 Timer encoder counter driver"
116	depends on MFD_STM32_TIMERS || COMPILE_TEST
117	help
118	  Select this option to enable STM32 Timer quadrature encoder
119	  and counter driver.
120
121	  To compile this driver as a module, choose M here: the
122	  module will be called stm32-timer-cnt.
123
124config TI_ECAP_CAPTURE
125	tristate "TI eCAP capture driver"
126	depends on ARCH_OMAP2PLUS || ARCH_DAVINCI_DA8XX || ARCH_KEYSTONE || ARCH_K3 || COMPILE_TEST
127	depends on HAS_IOMEM
128	select REGMAP_MMIO
129	help
130	  Select this option to enable the Texas Instruments Enhanced Capture
131	  (eCAP) driver in input mode.
132
133	  It can be used to timestamp events (falling/rising edges) detected
134	  on ECAP input signal.
135
136	  To compile this driver as a module, choose M here: the module
137	  will be called ti-ecap-capture.
138
139config TI_EQEP
140	tristate "TI eQEP counter driver"
141	depends on (SOC_AM33XX || COMPILE_TEST)
142	select REGMAP_MMIO
143	help
144	  Select this option to enable the Texas Instruments Enhanced Quadrature
145	  Encoder Pulse (eQEP) counter driver.
146
147	  To compile this driver as a module, choose M here: the module will be
148	  called ti-eqep.
149
150endif # COUNTER