arch/arm/stm32h5: Add RS-485 support to serial driver

Initial commit for adding rs-485 support to serial driver. More is needed as well as testing.

Style fixes.

Added unconfigure functionality.

Added Unconfigure configs to CONFIG.

More style fixes.

Changed depend spacing from 4 spaces to tab.

Fixed priv types, changed serialin to getreg.

Do not unconfigure tx/rx/dir pins by default.

Signed-off-by: kywwilson11 <kwilson@2g-eng.com>

arch/arm/src/stm32h5/Kconfig

@@ -4525,6 +4525,19 @@ config LPUART1_RXDMA
 	---help---
 		In high data rate usage, Rx DMA may eliminate Rx overrun errors
 
+config LPUART1_UNCONFIG_RX_ON_CLOSE
+	bool "Unconfigure LPUART1 RX pin on close"
+	default n
+
+config LPUART1_UNCONFIG_TX_ON_CLOSE
+	bool "Unconfigure LPUART1 TX pin on close"
+	default n
+
+config LPUART1_UNCONFIG_DIR_ON_CLOSE
+	depends on LPUART1_RS485
+	bool "Unconfigure LPUART1 DIR pin on close"
+	default n
+
 endif # LPUART1_SERIALDRIVER
 
 choice
@@ -4566,6 +4579,19 @@ config USART1_RXDMA
 	---help---
 		In high data rate usage, Rx DMA may eliminate Rx overrun errors
 
+config USART1_UNCONFIG_RX_ON_CLOSE
+	bool "Unconfigure USART1 RX pin on close"
+	default n
+
+config USART1_UNCONFIG_TX_ON_CLOSE
+	bool "Unconfigure USART1 TX pin on close"
+	default n
+
+config USART1_UNCONFIG_DIR_ON_CLOSE
+	depends on USART1_RS485
+	bool "Unconfigure USART1 DIR pin on close"
+	default n
+
 endif # USART1_SERIALDRIVER
 
 choice
@@ -4607,6 +4633,19 @@ config USART2_RXDMA
 	---help---
 		In high data rate usage, Rx DMA may eliminate Rx overrun errors
 
+config USART2_UNCONFIG_RX_ON_CLOSE
+	bool "Unconfigure USART2 RX pin on close"
+	default n
+
+config USART2_UNCONFIG_TX_ON_CLOSE
+	bool "Unconfigure USART2 TX pin on close"
+	default n
+
+config USART2_UNCONFIG_DIR_ON_CLOSE
+	depends on USART2_RS485
+	bool "Unconfigure USART2 DIR pin on close"
+	default n
+
 endif # USART2_SERIALDRIVER
 
 choice
@@ -4648,6 +4687,19 @@ config USART3_RXDMA
 	---help---
 		In high data rate usage, Rx DMA may eliminate Rx overrun errors
 
+config USART3_UNCONFIG_RX_ON_CLOSE
+	bool "Unconfigure USART3 RX pin on close"
+	default n
+
+config USART3_UNCONFIG_TX_ON_CLOSE
+	bool "Unconfigure USART3 TX pin on close"
+	default n
+
+config USART3_UNCONFIG_DIR_ON_CLOSE
+	depends on USART3_RS485
+	bool "Unconfigure USART3 DIR pin on close"
+	default n
+
 endif # USART3_SERIALDRIVER
 
 choice
@@ -4689,6 +4741,19 @@ config UART4_RXDMA
 	---help---
 		In high data rate usage, Rx DMA may eliminate Rx overrun errors
 
+config UART4_UNCONFIG_RX_ON_CLOSE
+	bool "Unconfigure UART4 RX pin on close"
+	default n
+
+config UART4_UNCONFIG_TX_ON_CLOSE
+	bool "Unconfigure UART4 TX pin on close"
+	default n
+
+config UART4_UNCONFIG_DIR_ON_CLOSE
+	depends on UART4_RS485
+	bool "Unconfigure UART4 DIR pin on close"
+	default n
+
 endif # UART4_SERIALDRIVER
 
 choice
@@ -4730,6 +4795,19 @@ config UART5_RXDMA
 	---help---
 		In high data rate usage, Rx DMA may eliminate Rx overrun errors
 
+config UART5_UNCONFIG_RX_ON_CLOSE
+	bool "Unconfigure UART5 RX pin on close"
+	default n
+
+config UART5_UNCONFIG_TX_ON_CLOSE
+	bool "Unconfigure UART5 TX pin on close"
+	default n
+
+config UART5_UNCONFIG_DIR_ON_CLOSE
+	depends on UART5_RS485
+	bool "Unconfigure UART5 DIR pin on close"
+	default n
+
 endif # UART5_SERIALDRIVER
 
 choice
@@ -4771,6 +4849,19 @@ config USART6_RXDMA
 	---help---
 		In high data rate usage, Rx DMA may eliminate Rx overrun errors
 
+config USART6_UNCONFIG_RX_ON_CLOSE
+	bool "Unconfigure USART6 RX pin on close"
+	default n
+
+config USART6_UNCONFIG_TX_ON_CLOSE
+	bool "Unconfigure USART6 TX pin on close"
+	default n
+
+config USART6_UNCONFIG_DIR_ON_CLOSE
+	depends on USART6_RS485
+	bool "Unconfigure USART6 DIR pin on close"
+	default n
+
 endif # USART6_SERIALDRIVER
 
 if UART7_SERIALDRIVER
@@ -4800,6 +4891,19 @@ config UART7_RXDMA
 	---help---
 		In high data rate usage, Rx DMA may eliminate Rx overrun errors
 
+config UART7_UNCONFIG_RX_ON_CLOSE
+	bool "Unconfigure UART7 RX pin on close"
+	default n
+
+config UART7_UNCONFIG_TX_ON_CLOSE
+	bool "Unconfigure UART7 TX pin on close"
+	default n
+
+config UART7_UNCONFIG_DIR_ON_CLOSE
+	depends on UART7_RS485
+	bool "Unconfigure UART7 DIR pin on close"
+	default n
+
 endif # UART7_SERIALDRIVER
 
 if UART8_SERIALDRIVER
@@ -4829,6 +4933,19 @@ config UART8_RXDMA
 	---help---
 		In high data rate usage, Rx DMA may eliminate Rx overrun errors
 
+config UART8_UNCONFIG_RX_ON_CLOSE
+	bool "Unconfigure UART8 RX pin on close"
+	default n
+
+config UART8_UNCONFIG_TX_ON_CLOSE
+	bool "Unconfigure UART8 TX pin on close"
+	default n
+
+config UART8_UNCONFIG_DIR_ON_CLOSE
+	depends on UART8_RS485
+	bool "Unconfigure UART8 DIR pin on close"
+	default n
+
 endif # UART8_SERIALDRIVER
 
 if UART9_SERIALDRIVER
@@ -4858,6 +4975,19 @@ config UART9_RXDMA
 	---help---
 		In high data rate usage, Rx DMA may eliminate Rx overrun errors
 
+config UART9_UNCONFIG_RX_ON_CLOSE
+	bool "Unconfigure UART9 RX pin on close"
+	default n
+
+config UART9_UNCONFIG_TX_ON_CLOSE
+	bool "Unconfigure UART9 TX pin on close"
+	default n
+
+config UART9_UNCONFIG_DIR_ON_CLOSE
+	depends on UART9_RS485
+	bool "Unconfigure UART9 DIR pin on close"
+	default n
+
 endif # UART9_SERIALDRIVER
 
 if USART10_SERIALDRIVER
@@ -4887,6 +5017,19 @@ config USART10_RXDMA
 	---help---
 		In high data rate usage, Rx DMA may eliminate Rx overrun errors
 
+config USART10_UNCONFIG_RX_ON_CLOSE
+	bool "Unconfigure USART10 RX pin on close"
+	default n
+
+config USART10_UNCONFIG_TX_ON_CLOSE
+	bool "Unconfigure USART10 TX pin on close"
+	default n
+
+config USART10_UNCONFIG_DIR_ON_CLOSE
+	depends on USART10_RS485
+	bool "Unconfigure USART10 DIR pin on close"
+	default n
+
 endif # USART10_SERIALDRIVER
 
 if USART11_SERIALDRIVER
@@ -4916,6 +5059,19 @@ config USART11_RXDMA
 	---help---
 		In high data rate usage, Rx DMA may eliminate Rx overrun errors
 
+config USART11_UNCONFIG_RX_ON_CLOSE
+	bool "Unconfigure USART11 RX pin on close"
+	default n
+
+config USART11_UNCONFIG_TX_ON_CLOSE
+	bool "Unconfigure USART11 TX pin on close"
+	default n
+
+config USART11_UNCONFIG_DIR_ON_CLOSE
+	depends on USART11_RS485
+	bool "Unconfigure USART11 DIR pin on close"
+	default n
+
 endif # USART11_SERIALDRIVER
 
 if UART12_SERIALDRIVER
@@ -4945,6 +5101,19 @@ config UART12_RXDMA
 	---help---
 		In high data rate usage, Rx DMA may eliminate Rx overrun errors
 
+config UART12_UNCONFIG_RX_ON_CLOSE
+	bool "Unconfigure UART12 RX pin on close"
+	default n
+
+config UART12_UNCONFIG_TX_ON_CLOSE
+	bool "Unconfigure UART12 TX pin on close"
+	default n
+
+config UART12_UNCONFIG_DIR_ON_CLOSE
+	depends on UART12_RS485
+	bool "Unconfigure UART12 DIR pin on close"
+	default n
+
 endif # UART12_SERIALDRIVER
 
 if STM32H5_SERIALDRIVER