scripts: genpinctrl: only wipe folder of series we generate pinctrl for

When generating pinctrl for all families, don't delete the entire output
folder as it may contain pinctrl for STM32Cube HAL2 series which CANNOT
be regenerated by the script. Instead, wipe the folder of every series
for which we will generate pinctrl right before doing said generation.
When a family filter is active, continue to delete nothing as is the
case today.

Signed-off-by: Mathieu Choplain <mathieu.choplain-ext@st.com>

Author: mathieuchopstm

scripts/genpinctrl/genpinctrl.py

@@ -79,11 +79,6 @@
 ]
 """Supported SoC families"""
 
-HAL2_FAMILIES = [
-    "stm32c5",
-]
-"""SoC families relying on HAL2"""
-
 PIN_MODS = [
     "_C",  # Pins with analog switch (H7)
 ]
@@ -628,18 +623,6 @@ def main(data_path, output):
     gpio_ip_afs = get_gpio_ip_afs(data_path)
     mcu_signals = get_mcu_signals(data_path, gpio_ip_afs)
 
-    # erase output if we're about to generate for all families
-    if output.exists() and not FAMILY_FILTER.is_active():
-        shutil.rmtree(output)
-        output.mkdir(parents=True)
-        # Do not consider SoCs related to HAL2
-        for family in HAL2_FAMILIES:
-            family_path = output / "st" / family.removeprefix("stm32")
-            try:
-                run(["git", "checkout", "--", family_path], check=True)
-            except CalledProcessError:
-                break
-
     for family, refs in mcu_signals.items():
         # check family is supported
         if family.lower() not in SUPPORTED_FAMILIES:
@@ -648,8 +631,13 @@ def main(data_path, output):
         else:
             logger.info(f"Processing family {family}...")
 
-        # create destination directory for the family
+        # Create destination directory for the family,
+        # but wipe it first if we're generating for all
+        # families (i.e., family filter is not active).
         family_dir = output / "st" / family.lower().removeprefix("stm32")
+
+        if family_dir.exists() and not FAMILY_FILTER.is_active():
+            shutil.rmtree(family_dir)
         family_dir.mkdir(parents=True, exist_ok=True)
 
         # process each reference of the family