OMAP/serial: Add support for driving a GPIO as DTR.

OMAP hardware doesn't provide a phyisical DTR line, but
some configurations may need a DTR line which tracks whether
the device is open or not.

So allow a gpio to be configured as the DTR line.

Signed-off-by: NeilBrown <neilb@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 3 insertions, 0 deletions

diff --git a/arch/arm/mach-omap2/serial.c b/arch/arm/mach-omap2/serial.c
index c1b93c752d70..25d53b2800c1 100644
--- a/arch/arm/mach-omap2/serial.c
+++ b/arch/arm/mach-omap2/serial.c
@@ -304,6 +304,9 @@ void __init omap_serial_init_port(struct omap_board_data *bdata,
         omap_up.dma_rx_timeout = info->dma_rx_timeout;
         omap_up.dma_rx_poll_rate = info->dma_rx_poll_rate;
         omap_up.autosuspend_timeout = info->autosuspend_timeout;
+        omap_up.DTR_gpio = info->DTR_gpio;
+        omap_up.DTR_inverted = info->DTR_inverted;
+        omap_up.DTR_present = info->DTR_present;
 
         pdata = &omap_up;
         pdata_size = sizeof(struct omap_uart_port_info);