leandrof/linux
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

serial: imx: add support for loopback mode.

Browse Source 
Add the loopback mode support for imx uart driver.

Signed-off-by: Huang Shijie <b32955@freescale.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Huang Shijie 2013-11-29 17:29:24 +08:00 committed by Greg Kroah-Hartman
parent 17438217a6
commit 6b471a9840
1 changed files with 8 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
drivers/tty/serial/imx.c
View File

@ -806,6 +806,9 @@ static unsigned int imx_get_mctrl(struct uart_port *port)
if (readl(sport->port.membase + UCR2) & UCR2_CTS)
tmp |= TIOCM_RTS;
if (readl(sport->port.membase + uts_reg(sport)) & UTS_LOOP)
tmp |= TIOCM_LOOP;
return tmp;
}
@ -821,6 +824,11 @@ static void imx_set_mctrl(struct uart_port *port, unsigned int mctrl)
temp |= UCR2_CTS;
writel(temp, sport->port.membase + UCR2);
temp = readl(sport->port.membase + uts_reg(sport)) & ~UTS_LOOP;
if (mctrl & TIOCM_LOOP)
temp |= UTS_LOOP;
writel(temp, sport->port.membase + uts_reg(sport));
}
/*