|  | # 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. | 
|  |  | 
|  | if COUNTER | 
|  |  | 
|  | config 104_QUAD_8 | 
|  | tristate "ACCES 104-QUAD-8 driver" | 
|  | depends on PC104 && X86 && IIO | 
|  | select ISA_BUS_API | 
|  | 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. Although the | 
|  | 104-QUAD-8 counters have a 25-bit range, only the lower 24 bits may be | 
|  | set, either directly or via the counter's preset attribute. Interrupts | 
|  | are not supported by this driver. | 
|  |  | 
|  | The base port addresses for the devices may be configured via the base | 
|  | array module parameter. | 
|  |  | 
|  | 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 STM32_LPTIMER_CNT | 
|  | tristate "STM32 LP Timer encoder counter driver" | 
|  | depends on (MFD_STM32_LPTIMER || COMPILE_TEST) && IIO | 
|  | 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 FTM_QUADDEC | 
|  | tristate "Flex Timer Module Quadrature decoder driver" | 
|  | 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. | 
|  |  | 
|  | endif # COUNTER |