Merge pull request #18783 from jue89/fix/ztimer_lptimer_kconfig

sys/ztimer: model ztimer_periph_lptimer for Kconfig

boards/xg23-pk6068a/Kconfig

@@ -20,3 +20,4 @@ config BOARD_XG23_PK6068A
 
     # Put other features for this board (in alphabetical order)
     select HAVE_SAUL_GPIO
+    select HAVE_ZTIMER_PERIPH_LPTIMER

boards/xg23-pk6068a/Makefile.dep

@@ -1,3 +1,7 @@
 ifneq (,$(filter saul_default,$(USEMODULE)))
   USEMODULE += saul_gpio
 endif
+
+ifneq (,$(filter ztimer_msec ztimer_sec,$(USEMODULE)))
+  USEMODULE += ztimer_periph_lptimer
+endif

boards/xg23-pk6068a/include/board.h

@@ -35,6 +35,16 @@ extern "C" {
  */
 #define PM_BLOCKER_INITIAL { 0, 0, 0 }
 
+/**
+ * @name    ztimer configuration
+ * @{
+ */
+#define CONFIG_ZTIMER_LPTIMER_DEV            TIMER_DEV(1)
+#define CONFIG_ZTIMER_LPTIMER_FREQ           LFXO_FREQ
+#define CONFIG_ZTIMER_LPTIMER_WIDTH          24
+#define CONFIG_ZTIMER_LPTIMER_BLOCK_PM_MODE  EFM32_PM_MODE_EM3
+/** @} */
+
 /**
  * @brief   Power mode required for GPIO IRQs
  *

sys/include/ztimer/config.h

@@ -61,6 +61,13 @@ extern "C" {
 #define CONFIG_ZTIMER_USEC_DEV          (TIMER_DEV(0))
 #endif
 
+/**
+ * @brief   Default width of ZTIMER_LPTIMER
+ */
+#ifndef CONFIG_ZTIMER_LPTIMER_WIDTH
+#define CONFIG_ZTIMER_LPTIMER_WIDTH     (32)
+#endif
+
 /**
  * @brief   ZTIMER_USEC optimal minimum value for ztimer_set()
  *
@@ -114,6 +121,13 @@ extern "C" {
 #  endif
 #endif
 
+/**
+ * @brief   The minimum pm mode required for ZTIMER_LPTIMER to run
+ */
+#ifndef CONFIG_ZTIMER_LPTIMER_BLOCK_PM_MODE
+#  define CONFIG_ZTIMER_LPTIMER_BLOCK_PM_MODE ZTIMER_CLOCK_NO_REQUIRED_PM_MODE
+#endif
+
 /**
  * @brief   The minimum pm mode required for ZTIMER_RTT to run
  */

sys/ztimer/Kconfig

@@ -5,6 +5,11 @@
 # directory for more details.
 #
 
+config HAVE_ZTIMER_PERIPH_LPTIMER
+    bool
+    help
+        Indicates that ZTIMER_PERIPH_LPTIMER configuration is available.
+
 menu "ztimer - High level timer abstraction layer"
 
 config ZTIMER_CUSTOM_BACKEND_CONFIGURATION
@@ -39,6 +44,10 @@ config MODULE_ZTIMER_PERIPH_TIMER
     depends on HAS_PERIPH_TIMER
     select MODULE_PERIPH_TIMER
 
+config MODULE_ZTIMER_PERIPH_LPTIMER
+    bool "Low-power Timer peripheral"
+    select MODULE_ZTIMER_PERIPH_TIMER
+
 endmenu # Backends
 
 menu "Clocks"
@@ -62,7 +71,9 @@ config MODULE_ZTIMER_MSEC
 choice ZTIMER_MSEC_BACKEND
     bool "Backend"
     depends on MODULE_ZTIMER_MSEC
+    default ZTIMER_MSEC_BACKEND_LPTIMER if HAVE_ZTIMER_PERIPH_LPTIMER
     default ZTIMER_MSEC_BACKEND_RTT if !MODULE_ZTIMER_NO_PERIPH_RTT
+    default ZTIMER_MSEC_BACKEND_TIMER
 
 config ZTIMER_MSEC_BACKEND_TIMER
     bool "Timer"
@@ -73,6 +84,11 @@ config ZTIMER_MSEC_BACKEND_RTT
     depends on HAS_PERIPH_RTT
     select MODULE_ZTIMER_PERIPH_RTT
 
+config ZTIMER_MSEC_BACKEND_LPTIMER
+    bool "Low Power Timer"
+    depends on HAVE_ZTIMER_PERIPH_LPTIMER
+    select MODULE_ZTIMER_PERIPH_LPTIMER
+
 endchoice
 
 config MODULE_ZTIMER_SEC
@@ -82,7 +98,9 @@ config MODULE_ZTIMER_SEC
 choice
     bool "Backend"
     depends on MODULE_ZTIMER_SEC
+    default ZTIMER_SEC_BACKEND_LPTIMER if HAVE_ZTIMER_PERIPH_LPTIMER
     default ZTIMER_SEC_BACKEND_RTT if !MODULE_ZTIMER_NO_PERIPH_RTT
+    default ZTIMER_SEC_BACKEND_TIMER
 
 config ZTIMER_SEC_BACKEND_TIMER
     bool "Timer"
@@ -98,6 +116,11 @@ config ZTIMER_SEC_BACKEND_RTC
     depends on HAS_PERIPH_RTC
     select MODULE_ZTIMER_PERIPH_RTC
 
+config ZTIMER_SEC_BACKEND_LPTIMER
+    bool "Low Power Timer"
+    depends on HAVE_ZTIMER_PERIPH_LPTIMER
+    select MODULE_ZTIMER_PERIPH_LPTIMER
+
 endchoice
 
 endmenu # Clocks

sys/ztimer/Makefile.dep

@@ -41,6 +41,10 @@ ifneq (,$(filter ztimer_convert_%,$(USEMODULE)))
   USEMODULE += ztimer_convert
 endif
 
+ifneq (,$(filter ztimer_periph_lptimer,$(USEMODULE)))
+  USEMODULE += ztimer_periph_timer
+endif
+
 ifneq (,$(filter ztimer_periph_timer,$(USEMODULE)))
   FEATURES_REQUIRED += periph_timer
 endif