counter: Add STM32 Timer quadrature encoder
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>
diff --git a/drivers/counter/Makefile b/drivers/counter/Makefile
index aee0d2d..6b4a5be 100644
--- a/drivers/counter/Makefile
+++ b/drivers/counter/Makefile
@@ -5,3 +5,4 @@
obj-$(CONFIG_COUNTER) += counter.o
obj-$(CONFIG_104_QUAD_8) += 104-quad-8.o
+obj-$(CONFIG_STM32_TIMER_CNT) += stm32-timer-cnt.o