arch/arm/src/stm32f7: Remove adhoc PM interfaces and add CONFIG_PM serial suspend.

arch/arm/src/stm32/stm32_serial.c

@@ -1070,12 +1070,12 @@ static inline void up_setusartint(struct up_dev_s *priv, uint16_t ie)
 
   /* And restore the interrupt state (see the interrupt enable/usage table above) */
 
-  cr = up_serialin(priv, STM32_USART_CR1_OFFSET);
+  cr  = up_serialin(priv, STM32_USART_CR1_OFFSET);
   cr &= ~(USART_CR1_USED_INTS);
   cr |= (ie & (USART_CR1_USED_INTS));
   up_serialout(priv, STM32_USART_CR1_OFFSET, cr);
 
-  cr = up_serialin(priv, STM32_USART_CR3_OFFSET);
+  cr  = up_serialin(priv, STM32_USART_CR3_OFFSET);
   cr &= ~USART_CR3_EIE;
   cr |= (ie & USART_CR3_EIE);
   up_serialout(priv, STM32_USART_CR3_OFFSET, cr);

arch/arm/src/stm32f7/stm32_i2c.c

@@ -2729,6 +2729,11 @@ static int stm32_i2c_pm_prepare(FAR struct pm_callback_s *cb, int domain,
         }
 
       break;
+
+    default:
+      /* Should not get here */
+
+      break;
     }
 
   return OK;

arch/arm/src/stm32f7/stm32_spi.c

@@ -1787,6 +1787,11 @@ static int spi_pm_prepare(FAR struct pm_callback_s *cb, int domain,
         }
 
       break;
+
+    default:
+      /* Should not get here */
+
+      break;
     }
 
   return OK;

arch/arm/src/stm32f7/stm32_uart.h

@@ -320,16 +320,6 @@ extern "C"
  * Public Functions
  ************************************************************************************/
 
-/************************************************************************************
- * Name: stm32_serial_get_uart
- *
- * Description:
- *   Get serial driver structure for STM32 USART
- *
- ************************************************************************************/
-
-FAR uart_dev_t *stm32_serial_get_uart(int uart_num);
-
 /************************************************************************************
  * Name: stm32_serial_dma_poll
  *

arch/arm/src/stm32l4/stm32l4_1wire.c

@@ -1179,6 +1179,11 @@ static int stm32_1wire_pm_prepare(FAR struct pm_callback_s *cb, int domain,
         }
 
       break;
+
+    default:
+      /* Should not get here */
+
+      break;
     }
 
   return OK;

arch/arm/src/stm32l4/stm32l4_i2c.c

@@ -2876,6 +2876,11 @@ static int stm32l4_i2c_pm_prepare(FAR struct pm_callback_s *cb, int domain,
         }
 
       break;
+
+    default:
+      /* Should not get here */
+
+      break;
     }
 
   return OK;

arch/arm/src/stm32l4/stm32l4_serial.c

@@ -340,7 +340,7 @@ static int  stm32l4serial_pmprepare(FAR struct pm_callback_s *cb, int domain,
 #endif
 
 /****************************************************************************
- * Private Variables
+ * Private Data
  ****************************************************************************/
 
 #ifndef SERIAL_HAVE_ONLY_DMA
@@ -1187,7 +1187,7 @@ static void stm32l4serial_setsuspend(struct uart_dev_s *dev, bool suspend)
  ****************************************************************************/
 
 #ifdef CONFIG_PM
-void stm32l4serial_pm_setsuspend(bool suspend)
+static void stm32l4serial_pm_setsuspend(bool suspend)
 {
   int n;
 
@@ -2613,6 +2613,7 @@ static void stm32l4serial_pmnotify(FAR struct pm_callback_s *cb, int domain,
 
       default:
         /* Should not get here */
+
         break;
     }
 }
@@ -2709,9 +2710,13 @@ static int stm32l4serial_pmprepare(FAR struct pm_callback_s *cb, int domain,
               return ERROR;
             }
         }
+      break;
 
+    default:
+      /* Should not get here */
       break;
     }
+
   return OK;
 }
 #endif
@@ -2731,7 +2736,7 @@ static int stm32l4serial_pmprepare(FAR struct pm_callback_s *cb, int domain,
  * Description:
  *   Performs the low level USART initialization early in debug so that the
  *   serial console will be available during bootup.  This must be called
- *   before stm32l4serial_getregit.
+ *   before up_serialinit.
  *
  ****************************************************************************/
 
@@ -2899,7 +2904,7 @@ void stm32l4_serial_dma_poll(void)
  * Name: up_putc
  *
  * Description:
- *   Provide priority, low-level access to support OS debug  writes
+ *   Provide priority, low-level access to support OS debug writes
  *
  ****************************************************************************/
 

arch/arm/src/stm32l4/stm32l4_spi.c

@@ -1560,6 +1560,11 @@ static int spi_pm_prepare(FAR struct pm_callback_s *cb, int domain,
         }
 
       break;
+
+    default:
+      /* Should not get here */
+
+      break;
     }
 
   return OK;

include/nuttx/power/pm.h

@@ -588,14 +588,14 @@ enum pm_state_e pm_querystate(int domain);
  */
 
 #  define pm_initialize()
-#  define pm_register(cb)             (0)
+#  define pm_register(cb)              (0)
-#  define pm_unregister(cb)           (0)
+#  define pm_unregister(cb)            (0)
 #  define pm_activity(domain,prio)
 #  define pm_stay(domain,state)
 #  define pm_relax(domain,state)
-#  define pm_checkstate(domain)       (0)
+#  define pm_checkstate(domain)        (0)
-#  define pm_changestate(domain,state)
+#  define pm_changestate(domain,state) (0)
-#  define pm_querystate(domain)       (0)
+#  define pm_querystate(domain)        (0)
 
 #endif /* CONFIG_PM */
 #endif /* __INCLUDE_NUTTX_POWER_PM_H */