[ARM] 3592/1: AT91RM9200 Serial driver update

Patch from Andrew Victor

This patch includes a number of updates to the AT91RM9200 serial driver.

Changes include:
1. Conversion to a platform_driver.  [Ivan Kokshaysky]
2. Replaced all references to AT91RM9200 with AT91.  This driver can now
also be used for the AT91SAM9216.
3. Allow TIOCM_LOOP to configure local loopback mode.
4. Cleaned up the 'read_status_mask' usage and interrupt handler code.
[Chip Coldwell]
5. Suspend/resume support.  [David Brownell]

There are a few 'unused variable' warning when compiling this - I
removed the new DMA support to keep this first patch simpler.
Signed-off-by: Andrew Victor <andrew@sanpeople.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

drivers/serial/Kconfig

@@ -300,21 +300,22 @@ config SERIAL_AMBA_PL011_CONSOLE
 	  kernel at boot time.)
 
 config SERIAL_AT91
-	bool "AT91RM9200 serial port support"
-	depends on ARM && ARCH_AT91RM9200
+	bool "AT91RM9200 / AT91SAM9261 serial port support"
+	depends on ARM && (ARCH_AT91RM9200 || ARCH_AT91SAM9261)
 	select SERIAL_CORE
 	help
-	  This enables the driver for the on-chip UARTs of the AT91RM9200
-	  processor.
+	  This enables the driver for the on-chip UARTs of the Atmel
+	  AT91RM9200 and AT91SAM926 processor.
 
 config SERIAL_AT91_CONSOLE
-	bool "Support for console on AT91RM9200 serial port"
+	bool "Support for console on AT91RM9200 / AT91SAM9261 serial port"
 	depends on SERIAL_AT91=y
 	select SERIAL_CORE_CONSOLE
 	help
-	  Say Y here if you wish to use a UART on the AT91RM9200 as the system
-	  console (the system console is the device which receives all kernel
-	  messages and warnings and which allows logins in single user mode).
+	  Say Y here if you wish to use a UART on the Atmel AT91RM9200 or
+	  AT91SAM9261 as the system console (the system console is the device
+	  which receives all kernel messages and warnings and which allows
+	  logins in single user mode).
 
 config SERIAL_AT91_TTYAT
 	bool "Install as device ttyAT0-4 instead of ttyS0-4"

include/asm-arm/mach/serial_at91rm9200.h → include/asm-arm/mach/serial_at91.h

 /*
- *  linux/include/asm-arm/mach/serial_at91rm9200.h
+ *  linux/include/asm-arm/mach/serial_at91.h
  *
  *  Based on serial_sa1100.h  by Nicolas Pitre
  *
@@ -15,7 +15,7 @@ struct uart_port;
  * This is a temporary structure for registering these
  * functions; it is intended to be discarded after boot.
  */
-struct at91rm9200_port_fns {
+struct at91_port_fns {
 	void	(*set_mctrl)(struct uart_port *, u_int);
 	u_int	(*get_mctrl)(struct uart_port *);
 	void	(*enable_ms)(struct uart_port *);
@@ -26,11 +26,9 @@ struct at91rm9200_port_fns {
 };
 
 #if defined(CONFIG_SERIAL_AT91)
-void at91_register_uart_fns(struct at91rm9200_port_fns *fns);
-void at91_register_uart(int idx, int port);
+void at91_register_uart_fns(struct at91_port_fns *fns);
 #else
 #define at91_register_uart_fns(fns) do { } while (0)
-#define at91_register_uart(idx,port) do { } while (0)
 #endif
 
 

include/linux/serial_core.h

@@ -67,8 +67,8 @@
 /* Parisc type numbers. */
 #define PORT_MUX	48
 
-/* Atmel AT91RM9200 SoC */
-#define PORT_AT91RM9200 49
+/* Atmel AT91xxx SoC */
+#define PORT_AT91	49
 
 /* Macintosh Zilog type numbers */
 #define PORT_MAC_ZILOG	50	/* m68k : not yet implemented */