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authorSonic Zhang <sonic.zhang@analog.com>2008-02-02 12:05:02 +0300
committerBryan Wu <cooloney@kernel.org>2008-02-02 12:05:02 +0300
commitdb288381e26e592b11572ce8199bedeadf0c0830 (patch)
treee10eaa7b1a5b0bfefecd9417be43d12f5e82e006 /drivers/serial
parent4cb4f22b19237e63c460c53fbd1c417cdaf63014 (diff)
downloadlinux-db288381e26e592b11572ce8199bedeadf0c0830.tar.xz
[Blackfin] serial driver: Add flow control support to bf54x
Signed-off-by: Sonic Zhang <sonic.zhang@analog.com> Signed-off-by: Bryan Wu <bryan.wu@analog.com>
Diffstat (limited to 'drivers/serial')
-rw-r--r--drivers/serial/Kconfig4
-rw-r--r--drivers/serial/bfin_5xx.c12
2 files changed, 14 insertions, 2 deletions
diff --git a/drivers/serial/Kconfig b/drivers/serial/Kconfig
index 202fb5c99b83..cf627cd1b4c8 100644
--- a/drivers/serial/Kconfig
+++ b/drivers/serial/Kconfig
@@ -699,14 +699,14 @@ config BFIN_UART1_CTSRTS
config UART1_CTS_PIN
int "UART1 CTS pin"
- depends on BFIN_UART1_CTSRTS && (BF53x || BF561)
+ depends on BFIN_UART1_CTSRTS && !BF54x
default -1
help
Refer to ./include/asm-blackfin/gpio.h to see the GPIO map.
config UART1_RTS_PIN
int "UART1 RTS pin"
- depends on BFIN_UART1_CTSRTS && (BF53x || BF561)
+ depends on BFIN_UART1_CTSRTS && !BF54x
default -1
help
Refer to ./include/asm-blackfin/gpio.h to see the GPIO map.
diff --git a/drivers/serial/bfin_5xx.c b/drivers/serial/bfin_5xx.c
index af866ab3f5a1..69ac7007682e 100644
--- a/drivers/serial/bfin_5xx.c
+++ b/drivers/serial/bfin_5xx.c
@@ -579,7 +579,11 @@ static unsigned int bfin_serial_get_mctrl(struct uart_port *port)
if (uart->cts_pin < 0)
return TIOCM_CTS | TIOCM_DSR | TIOCM_CAR;
+# ifdef BF54x
+ if (UART_GET_MSR(uart) & CTS)
+# else
if (gpio_get_value(uart->cts_pin))
+# endif
return TIOCM_DSR | TIOCM_CAR;
else
#endif
@@ -594,9 +598,17 @@ static void bfin_serial_set_mctrl(struct uart_port *port, unsigned int mctrl)
return;
if (mctrl & TIOCM_RTS)
+# ifdef BF54x
+ UART_PUT_MCR(uart, UART_GET_MCR(uart) & ~MRTS);
+# else
gpio_set_value(uart->rts_pin, 0);
+# endif
else
+# ifdef BF54x
+ UART_PUT_MCR(uart, UART_GET_MCR(uart) | MRTS);
+# else
gpio_set_value(uart->rts_pin, 1);
+# endif
#endif
}