[RFC 06/24] SERIAL: omap: allow hardware assisted rts/cts modes to be disabled
From: Russell King <hidden>
Date: 2012-10-06 12:41:02
Also in:
linux-omap, linux-serial
Subsystem:
the rest, tty layer and serial drivers · Maintainers:
Linus Torvalds, Greg Kroah-Hartman, Jiri Slaby
There is nothing which clears the auto RTS/CTS bits, so once hardware flow control gets enabled, there's no possibility to disable it. So, clear these bits when CRTSCTS is cleared. Signed-off-by: Russell King <redacted> --- drivers/tty/serial/omap-serial.c | 7 +++++++ 1 files changed, 7 insertions(+), 0 deletions(-)
diff --git a/drivers/tty/serial/omap-serial.c b/drivers/tty/serial/omap-serial.c
index 654dd78..f2535fe 100644
--- a/drivers/tty/serial/omap-serial.c
+++ b/drivers/tty/serial/omap-serial.c@@ -917,6 +917,13 @@ serial_omap_set_termios(struct uart_port *port, struct ktermios *termios, serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B); serial_out(up, UART_EFR, up->efr); serial_out(up, UART_LCR, cval); + } else { + /* Disable AUTORTS and AUTOCTS */ + up->efr &= ~(UART_EFR_CTS | UART_EFR_RTS); + + serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B); + serial_out(up, UART_EFR, up->efr); + serial_out(up, UART_LCR, cval); } serial_omap_set_mctrl(&up->port, up->port.mctrl);
--
1.7.4.4