pm: unify and set safe default pm_blocker

cpu/kinetis_common/include/periph_cpu.h

@@ -103,12 +103,6 @@ typedef uint16_t gpio_t;
  */
 #define PM_NUM_MODES    (1U)
 
-/**
- * @brief   Override the default initial PM blocker
- * @todo   we block all modes per default, until PM is cleanly implemented
- */
-#define PM_BLOCKER_INITIAL  { .val_u32 = 0x01010101 }
-
 #ifndef DOXYGEN
 /**
  * @brief   Override GPIO modes

cpu/sam0_common/include/periph_cpu_common.h

@@ -65,8 +65,6 @@ typedef uint32_t gpio_t;
  * @{
  */
 #define PM_NUM_MODES        (3)
-/** @todo   we block all modes per default, until PM is cleanly implemented */
-#define PM_BLOCKER_INITIAL  { .val_u32 = 0x01010101 }
 /** @} */
 
 #ifndef DOXYGEN

cpu/stm32f1/include/periph_cpu.h

@@ -59,7 +59,7 @@ extern "C" {
 /**
  * @brief   Define the number of available PM modes
  */
-#define PM_NUM_MODES    (2U)
+#define PM_NUM_MODES        (2U)
 
 /**
  * @brief   Override the default initial PM blocker
@@ -70,7 +70,7 @@ extern "C" {
 /**
  * @brief  Define the config flag for stop mode
  */
-#define PM_STOP_CONFIG  (PWR_CR_LPDS)
+#define PM_STOP_CONFIG      (PWR_CR_LPDS)
 
 #ifndef DOXYGEN
 /**

sys/pm_layered/pm.c

@@ -30,7 +30,7 @@
 #endif
 
 #ifndef PM_BLOCKER_INITIAL
-#define PM_BLOCKER_INITIAL { .val_u32 = 0 }
+#define PM_BLOCKER_INITIAL { .val_u32 = 0x01010101 }
 #endif
 
 /**