serial: bfin_sport_uart: add support for CTS/RTS via GPIOs

Some people need flow control on their ports, so now boards can support
that via any GPIOs.

Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 24 insertions, 0 deletions

diff --git a/drivers/serial/Kconfig b/drivers/serial/Kconfig
index 302836a80693..63258305c057 100644
--- a/drivers/serial/Kconfig
+++ b/drivers/serial/Kconfig
@@ -1443,24 +1443,48 @@ config SERIAL_BFIN_SPORT0_UART
         help
           Enable UART over SPORT0
 
+config SERIAL_BFIN_SPORT0_UART_CTSRTS
+        bool "Enable UART over SPORT0 hardware flow control"
+        depends on SERIAL_BFIN_SPORT0_UART
+        help
+          Enable hardware flow control in the driver.
+
 config SERIAL_BFIN_SPORT1_UART
         bool "Enable UART over SPORT1"
         depends on SERIAL_BFIN_SPORT
         help
           Enable UART over SPORT1
 
+config SERIAL_BFIN_SPORT1_UART_CTSRTS
+        bool "Enable UART over SPORT1 hardware flow control"
+        depends on SERIAL_BFIN_SPORT1_UART
+        help
+          Enable hardware flow control in the driver.
+
 config SERIAL_BFIN_SPORT2_UART
         bool "Enable UART over SPORT2"
         depends on SERIAL_BFIN_SPORT && (BF54x || BF538 || BF539)
         help
           Enable UART over SPORT2
 
+config SERIAL_BFIN_SPORT2_UART_CTSRTS
+        bool "Enable UART over SPORT2 hardware flow control"
+        depends on SERIAL_BFIN_SPORT2_UART
+        help
+          Enable hardware flow control in the driver.
+
 config SERIAL_BFIN_SPORT3_UART
         bool "Enable UART over SPORT3"
         depends on SERIAL_BFIN_SPORT && (BF54x || BF538 || BF539)
         help
           Enable UART over SPORT3
 
+config SERIAL_BFIN_SPORT3_UART_CTSRTS
+        bool "Enable UART over SPORT3 hardware flow control"
+        depends on SERIAL_BFIN_SPORT3_UART
+        help
+          Enable hardware flow control in the driver.
+
 config SERIAL_TIMBERDALE
         tristate "Support for timberdale UART"
         select SERIAL_CORE