From 4bb6a764eaa2620d92ec48ef98ab62b4fa8ecd9b Mon Sep 17 00:00:00 2001
From: Jue <me@jue.yt>
Date: Thu, 17 Feb 2022 11:09:24 +0100
Subject: [PATCH] cpu/efm32: select series-specific drivers in periph Makefile

This will allow to share implementations across a subset of EFM32 series.
---
 cpu/efm32/Makefile.dep    | 12 ------------
 cpu/efm32/periph/Makefile | 29 +++++++++++++++++++++++++++++
 2 files changed, 29 insertions(+), 12 deletions(-)

diff --git a/cpu/efm32/Makefile.dep b/cpu/efm32/Makefile.dep
index b7f90bf5ae..7a941bad49 100644
--- a/cpu/efm32/Makefile.dep
+++ b/cpu/efm32/Makefile.dep
@@ -1,15 +1,3 @@
-ifneq (,$(filter periph_rtc,$(USEMODULE)))
-  USEMODULE += periph_rtc_series$(EFM32_SERIES)
-endif
-
-ifneq (,$(filter periph_rtt,$(USEMODULE)))
-  USEMODULE += periph_rtt_series$(EFM32_SERIES)
-endif
-
-ifneq (,$(filter periph_wdt,$(USEMODULE)))
-  USEMODULE += periph_wdt_series$(EFM32_SERIES)
-endif
-
 # include Gecko SDK package
 USEPKG += gecko_sdk
 
diff --git a/cpu/efm32/periph/Makefile b/cpu/efm32/periph/Makefile
index a36df249ac..6d8e5f3974 100644
--- a/cpu/efm32/periph/Makefile
+++ b/cpu/efm32/periph/Makefile
@@ -1 +1,30 @@
+include $(RIOTCPU)/efm32/efm32-info.mk
+
+# Select the correct implementation for `periph_rtc`
+ifneq (,$(filter periph_rtc,$(USEMODULE)))
+  ifeq (0,$(EFM32_SERIES))
+    SRC += rtc_series0.c
+  else ifeq (1,$(EFM32_SERIES))
+    SRC += rtc_series1.c
+  endif
+endif
+
+# Select the correct implementation for `periph_rtt`
+ifneq (,$(filter periph_rtt,$(USEMODULE)))
+  ifeq (0,$(EFM32_SERIES))
+    SRC += rtt_series0.c
+  else ifeq (1,$(EFM32_SERIES))
+    SRC += rtt_series1.c
+  endif
+endif
+
+# Select the correct implementation for `periph_wdt`
+ifneq (,$(filter periph_wdt,$(USEMODULE)))
+  ifeq (0,$(EFM32_SERIES))
+    SRC += wdt_series0.c
+  else ifeq (1,$(EFM32_SERIES))
+    SRC += wdt_series1.c
+  endif
+endif
+
 include $(RIOTMAKE)/periph.mk