Revert "serial: omap: fix software flow control"

This reverts commit 957ee7270d632245b43f6feb0e70d9a5e9ea6cf6
(serial: omap: fix software flow control).

As Russell has pointed out, that commit isn't fixing
Software Flow Control at all, and it actually makes
it even more broken.

It was agreed to revert this commit and use Russell's
latest UART patches instead.

Cc: Russell King <linux@arm.linux.org.uk>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/arch/arm/plat-omap/include/plat/omap-serial.h b/arch/arm/plat-omap/include/plat/omap-serial.h
index f4a4cd014795d676d85ffdc05622a4ac3e889a5c..1957a8516e938e2d9f42b690903211095e6ed959 100644 (file)
--- a/arch/arm/plat-omap/include/plat/omap-serial.h
+++ b/arch/arm/plat-omap/include/plat/omap-serial.h
@@ -40,10 +40,10 @@
 #define OMAP_UART_WER_MOD_WKUP 0X7F
 
 /* Enable XON/XOFF flow control on output */
-#define OMAP_UART_SW_TX                0x8
+#define OMAP_UART_SW_TX                0x04
 
 /* Enable XON/XOFF flow control on input */
-#define OMAP_UART_SW_RX                0x2
+#define OMAP_UART_SW_RX                0x04
 
 #define OMAP_UART_SYSC_RESET   0X07
 #define OMAP_UART_TCR_TRIG     0X0F

diff --git a/drivers/tty/serial/omap-serial.c b/drivers/tty/serial/omap-serial.c
index 6ede6fd92b4cd00e939dca479e0f3e3a0a0d923e..6d3d26a607b9fd26bc03cff7d50f62ccbf8a589b 100644 (file)
--- a/drivers/tty/serial/omap-serial.c
+++ b/drivers/tty/serial/omap-serial.c
@@ -671,19 +671,19 @@ serial_omap_configure_xonxoff
 
        /*
         * IXON Flag:
-        * Flow control for OMAP.TX
-        * OMAP.RX should listen for XON/XOFF
+        * Enable XON/XOFF flow control on output.
+        * Transmit XON1, XOFF1
         */
        if (termios->c_iflag & IXON)
-               up->efr |= OMAP_UART_SW_RX;
+               up->efr |= OMAP_UART_SW_TX;
 
        /*
         * IXOFF Flag:
-        * Flow control for OMAP.RX
-        * OMAP.TX should send XON/XOFF
+        * Enable XON/XOFF flow control on input.
+        * Receiver compares XON1, XOFF1.
         */
        if (termios->c_iflag & IXOFF)
-               up->efr |= OMAP_UART_SW_TX;
+               up->efr |= OMAP_UART_SW_RX;
 
        serial_out(up, UART_EFR, up->efr | UART_EFR_ECB);
        serial_out(up, UART_LCR, UART_LCR_CONF_MODE_A);