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Commit c4b05856 authored by Srinivas Kandagatla's avatar Srinivas Kandagatla Committed by Greg Kroah-Hartman
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serial:st-asc: Add ST ASC driver. 



This patch adds support to ASC (asynchronous serial controller)
driver, which is basically a standard serial driver. This IP is common
across all the ST parts for settop box platforms.

ASC is embedded in ST COMMS IP block. It supports Rx & Tx functionality.
It support all industry standard baud rates.

Signed-off-by: default avatarSrinivas Kandagatla <srinivas.kandagatla@st.com>
CC: Stephen Gallimore <stephen.gallimore@st.com>
CC: Stuart Menefy <stuart.menefy@st.com>
CC: Arnd Bergmann <arnd@arndb.de>
CC: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 75e66aa6

Documentation/devicetree/bindings/tty/serial/st-asc.txt

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*st-asc(Serial Port)



Required properties:

- compatible : Should be "st,asc".

- reg, reg-names, interrupts, interrupt-names	: Standard way to define device

			resources with names. look in

			Documentation/devicetree/bindings/resource-names.txt



Optional properties:

- st,hw-flow-ctrl	bool flag to enable hardware flow control.

- st,force-m1		bool flat to force asc to be in Mode-1 recommeded

			for high bit rates (above 19.2K)

Example:

serial@fe440000{

    compatible    = "st,asc";

    reg         = <0xfe440000 0x2c>;

    interrupts     =  <0 209 0>;

};

drivers/tty/serial/Kconfig

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@@ -1497,6 +1497,22 @@ config SERIAL_FSL_LPUART_CONSOLE 
	  If you have enabled the lpuart serial port on the Freescale SoCs,

	  you can make it the console by answering Y to this option.



config SERIAL_ST_ASC

	tristate "ST ASC serial port support"

	select SERIAL_CORE

	help

	  This driver is for the on-chip Asychronous Serial Controller on

	  STMicroelectronics STi SoCs.

	  ASC is embedded in ST COMMS IP block. It supports Rx & Tx functionality.

	  It support all industry standard baud rates.



	  If unsure, say N.



config SERIAL_ST_ASC_CONSOLE

	bool "Support for console on ST ASC"

	depends on SERIAL_ST_ASC=y

	select SERIAL_CORE_CONSOLE



endmenu



endif # TTY

drivers/tty/serial/Makefile

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@@ -65,6 +65,7 @@ obj-$(CONFIG_SERIAL_KGDB_NMI) += kgdb_nmi.o 
obj-$(CONFIG_SERIAL_KS8695) += serial_ks8695.o

obj-$(CONFIG_SERIAL_OMAP) += omap-serial.o

obj-$(CONFIG_SERIAL_ALTERA_UART) += altera_uart.o

obj-$(CONFIG_SERIAL_ST_ASC) += st-asc.o

obj-$(CONFIG_KGDB_SERIAL_CONSOLE) += kgdboc.o

obj-$(CONFIG_SERIAL_QE) += ucc_uart.o

obj-$(CONFIG_SERIAL_TIMBERDALE)	+= timbuart.o

drivers/tty/serial/st-asc.c

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File added.

Preview size limit exceeded, changes collapsed.

include/uapi/linux/serial_core.h

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@@ -232,4 +232,7 @@ 
/* SH-SCI */

#define PORT_HSCIF	104



/* ST ASC type numbers */

#define PORT_ASC       105



#endif /* _UAPILINUX_SERIAL_CORE_H */