mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2025-01-26 21:59:21 +07:00
ad29937e20
Implement counter part of the STM32 timer hardware block by using counter API. Hardware only supports X2 and X4 quadrature modes. A ceiling value can be set to define the maximum value reachable by the counter. Signed-off-by: Benjamin Gaignard <benjamin.gaignard@st.com> Co-authored-by: Fabrice Gasnier <fabrice.gasnier@st.com> Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Signed-off-by: William Breathitt Gray <vilhelm.gray@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
42 lines
1.3 KiB
Plaintext
42 lines
1.3 KiB
Plaintext
#
|
|
# 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.
|
|
|
|
endif # COUNTER
|