lkml.org 
[lkml]   [2009]   [Oct]   [25]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
Date
From
Subject[PATCH 5/7] ark3116: (3rd try) Add cmset and break
Signed-off-by: Bart Hartgers <bart.hartgers@gmail.com>
---
Index: linux-2.6.32-rc4/drivers/usb/serial/ark3116.c
===================================================================
--- linux-2.6.32-rc4.orig/drivers/usb/serial/ark3116.c 2009-10-18 16:20:17.000000000 +0200
+++ linux-2.6.32-rc4/drivers/usb/serial/ark3116.c 2009-10-18 16:20:20.000000000 +0200
@@ -570,6 +570,62 @@ static int ark3116_tiocmget(struct tty_s
(ctrl & UART_MCR_OUT2 ? TIOCM_OUT2 : 0);
}

+static int ark3116_tiocmset(struct tty_struct *tty, struct file *file,
+ unsigned set, unsigned clr)
+{
+ struct usb_serial_port *port = tty->driver_data;
+ struct ark3116_private *priv = usb_get_serial_port_data(port);
+ unsigned setmask = 0;
+ unsigned clrmask = 0;
+
+ if (set & TIOCM_RTS)
+ setmask |= UART_MCR_RTS;
+ if (set & TIOCM_DTR)
+ setmask |= UART_MCR_DTR;
+ if (set & TIOCM_OUT1)
+ setmask |= UART_MCR_OUT1;
+ if (set & TIOCM_OUT2)
+ setmask |= UART_MCR_OUT2;
+ if (clr & TIOCM_RTS)
+ clrmask |= UART_MCR_RTS;
+ if (clr & TIOCM_DTR)
+ clrmask |= UART_MCR_DTR;
+ if (clr & TIOCM_OUT1)
+ clrmask |= UART_MCR_OUT1;
+ if (clr & TIOCM_OUT2)
+ clrmask |= UART_MCR_OUT2;
+
+ ark3116_atomic_set_clear(setmask, clrmask, &priv->mcr);
+
+ /* unfortunately, we need the mutex, to make sure that the value
+ * in priv->mcr is actually the one that is in the hardware
+ */
+
+ mutex_lock(&priv->lock);
+ ark3116_write_reg(port->serial, UART_MCR, atomic_read(&priv->mcr));
+ mutex_unlock(&priv->lock);
+
+ return 0;
+}
+
+static void ark3116_break_ctl(struct tty_struct *tty, int break_state)
+{
+ struct usb_serial_port *port = tty->driver_data;
+ struct ark3116_private *priv = usb_get_serial_port_data(port);
+
+ /* LCR is also used for other things: protect access */
+ mutex_lock(&priv->lock);
+
+ if (break_state)
+ priv->lcr |= UART_LCR_SBC;
+ else
+ priv->lcr &= UART_LCR_SBC;
+
+ ark3116_write_reg(port->serial, UART_LCR, priv->lcr);
+
+ mutex_unlock(&priv->lock);
+}
+
static struct usb_driver ark3116_driver = {
.name = "ark3116",
.probe = usb_serial_probe,
@@ -592,8 +648,10 @@ static struct usb_serial_driver ark3116_
.init_termios = ark3116_init_termios,
.ioctl = ark3116_ioctl,
.tiocmget = ark3116_tiocmget,
+ .tiocmset = ark3116_tiocmset,
.open = ark3116_open,
.close = ark3116_close,
+ .break_ctl = ark3116_break_ctl,
};

static int __init ark3116_init(void)
--


\
 
 \ /
  Last update: 2009-10-25 18:57    [from the cache]
©2003-2014 Jasper Spaans. Advertise on this site