[ARM] 5244/1: Add hardware CTSRTS flow control to pxa serial driver

Adds hardware CTSRTS control for pxa serial devices through
termios controls.

Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Robert Jarzmik 2008-09-06 23:01:32 +01:00 committed by Russell King
parent 4104980a3c
commit 2276f03b74
1 changed files with 5 additions and 0 deletions

View File

@ -534,6 +534,11 @@ serial_pxa_set_termios(struct uart_port *port, struct ktermios *termios,
serial_out(up, UART_IER, up->ier);
if (termios->c_cflag & CRTSCTS)
up->mcr |= UART_MCR_AFE;
else
up->mcr &= ~UART_MCR_AFE;
serial_out(up, UART_LCR, cval | UART_LCR_DLAB);/* set DLAB */
serial_out(up, UART_DLL, quot & 0xff); /* LS of divisor */
serial_out(up, UART_DLM, quot >> 8); /* MS of divisor */