commit 2c837a8a8f9f182b0286f5644ed50374b8434867
author Rama Kiran Kumar Indrakanti <indrakanti_ram@hotmail.com> Mon May 25 11:51:09 2015 +0530
committer Greg Kroah-Hartman <gregkh@linuxfoundation.org> Mon Jun 01 06:45:27 2015 +0900
tree 223d2b29b2d6113e31fa70efb1ff617a56794dcb
parent 34d2e4584ae594eff29d1595d47d7d044e57f834

sc16is7xx: spi interface is added

spi interface for sc16is7xx is added along with Kconfig flag
to enable spi or i2c, thus in a instance we can have either
spi or i2c or both, in sync to the hw.

Signed-off-by: Rama Kiran Kumar Indrakanti <indrakanti_ram@hotmail.com>
Signed-off-by: Jakub Kicinski <kubakici@wp.pl>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/tty/serial/Kconfig

diff --git a/drivers/tty/serial/Kconfig b/drivers/tty/serial/Kconfig
index f5a88e7..da45877 100644
--- a/drivers/tty/serial/Kconfig
+++ b/drivers/tty/serial/Kconfig
@@ -1179,15 +1179,42 @@
 	help
 	  Support for console on SCCNXP serial ports.
 
+config SERIAL_SC16IS7XX_CORE
+        tristate
+
 config SERIAL_SC16IS7XX
-	tristate "SC16IS7xx serial support"
-	depends on I2C
-	select SERIAL_CORE
-	select REGMAP_I2C if I2C
-	help
-	  This selects support for SC16IS7xx serial ports.
-	  Supported ICs are SC16IS740, SC16IS741, SC16IS750, SC16IS752,
-	  SC16IS760 and SC16IS762.
+        tristate "SC16IS7xx serial support"
+        select SERIAL_CORE
+        depends on I2C || SPI_MASTER
+        help
+          This selects support for SC16IS7xx serial ports.
+          Supported ICs are SC16IS740, SC16IS741, SC16IS750, SC16IS752,
+          SC16IS760 and SC16IS762. Select supported buses using options below.
+
+config SERIAL_SC16IS7XX_I2C
+        bool "SC16IS7xx for I2C interface"
+        depends on SERIAL_SC16IS7XX
+        depends on I2C
+        select SERIAL_SC16IS7XX_CORE if SERIAL_SC16IS7XX
+        select REGMAP_I2C if I2C
+        default y
+        help
+          Enable SC16IS7xx driver on I2C bus,
+          If required say y, and say n to i2c if not required,
+          Enabled by default to support oldconfig.
+          You must select at least one bus for the driver to be built.
+
+config SERIAL_SC16IS7XX_SPI
+        bool "SC16IS7xx for spi interface"
+        depends on SERIAL_SC16IS7XX
+        depends on SPI_MASTER
+        select SERIAL_SC16IS7XX_CORE if SERIAL_SC16IS7XX
+        select REGMAP_SPI if SPI_MASTER
+        help
+          Enable SC16IS7xx driver on SPI bus,
+          If required say y, and say n to spi if not required,
+          This is additional support to exsisting driver.
+          You must select at least one bus for the driver to be built.
 
 config SERIAL_BFIN_SPORT
 	tristate "Blackfin SPORT emulate UART"