diff options
| author | Israel Perez <B37753@freescale.com> | 2013-11-28 15:00:33 +0800 |
|---|---|---|
| committer | Huang Shijie <b32955@freescale.com> | 2013-11-28 16:17:14 +0800 |
| commit | 5d01a36741efc77a36a78953c9b7f93a93fecdf9 (patch) | |
| tree | effe260c67cc5f28ff7de4f23c1cbe4fe532cefb /drivers/tty | |
| parent | 22a0484d177705f7da69db2036e0a5dce1e2180f (diff) | |
ENGR00211653 [MX6Q ARD] IMX UART add support for loopback mode.
ttymxc serial uart driver add support loopback mode.
returns TIOCM_LOOP set when reading the status.
[original hash:42d5723 fix a litte for 3.10.17]
Signed-off-by: Israel Perez <B37753@freescale.com>
Signed-off-by: Huang Shijie <b32955@freescale.com>
Diffstat (limited to 'drivers/tty')
| -rw-r--r-- | drivers/tty/serial/imx.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/tty/serial/imx.c b/drivers/tty/serial/imx.c index b2cfdb661947..d799140e53b6 100644 --- a/drivers/tty/serial/imx.c +++ b/drivers/tty/serial/imx.c @@ -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)); } /* |