From a64171f2790daa505a9a578bf6df3e9d7ed97bfe Mon Sep 17 00:00:00 2001 From: Greg Kroah-Hartman <greg@kroah.com> Date: Wed, 23 Apr 2003 03:38:41 -0700 Subject: [PATCH] [PATCH] USB: ftdi_sio: add support for new tty tiocmget and tiocmset functions. --- drivers/usb/serial/ftdi_sio.c | 185 +++++++++++++++------------------- 1 file changed, 83 insertions(+), 102 deletions(-) diff --git a/drivers/usb/serial/ftdi_sio.c b/drivers/usb/serial/ftdi_sio.c index caedb621689b..dee5b459da2a 100644 --- a/drivers/usb/serial/ftdi_sio.c +++ b/drivers/usb/serial/ftdi_sio.c @@ -175,6 +175,8 @@ static int ftdi_sio_write_room (struct usb_serial_port *port); static void ftdi_sio_write_bulk_callback (struct urb *urb, struct pt_regs *regs); static void ftdi_sio_read_bulk_callback (struct urb *urb, struct pt_regs *regs); static void ftdi_sio_set_termios (struct usb_serial_port *port, struct termios * old); +static int ftdi_sio_tiocmget (struct usb_serial_port *port, struct file *file); +static int ftdi_sio_tiocmset (struct usb_serial_port *port, struct file *file, unsigned int set, unsigned int clear); static int ftdi_sio_ioctl (struct usb_serial_port *port, struct file * file, unsigned int cmd, unsigned long arg); static void ftdi_sio_break_ctl (struct usb_serial_port *port, int break_state ); @@ -198,6 +200,8 @@ static struct usb_serial_device_type ftdi_sio_device = { .ioctl = ftdi_sio_ioctl, .set_termios = ftdi_sio_set_termios, .break_ctl = ftdi_sio_break_ctl, + .tiocmget = ftdi_sio_tiocmget, + .tiocmset = ftdi_sio_tiocmset, .attach = ftdi_sio_startup, .shutdown = ftdi_sio_shutdown, }; @@ -219,6 +223,8 @@ static struct usb_serial_device_type ftdi_8U232AM_device = { .ioctl = ftdi_sio_ioctl, .set_termios = ftdi_sio_set_termios, .break_ctl = ftdi_sio_break_ctl, + .tiocmget = ftdi_sio_tiocmget, + .tiocmset = ftdi_sio_tiocmset, .attach = ftdi_8U232AM_startup, .shutdown = ftdi_sio_shutdown, }; @@ -823,125 +829,100 @@ static void ftdi_sio_set_termios (struct usb_serial_port *port, struct termios * return; } /* ftdi_sio_set_termios */ -static int ftdi_sio_ioctl (struct usb_serial_port *port, struct file * file, unsigned int cmd, unsigned long arg) +static int ftdi_sio_tiocmget (struct usb_serial_port *port, struct file *file) { struct usb_serial *serial = port->serial; struct ftdi_private *priv = usb_get_serial_port_data(port); - __u16 urb_value=0; /* Will hold the new flags */ - char buf[2]; - int ret, mask; + char *buf = NULL; + int ret = -EINVAL; + int size; - dbg("%s cmd 0x%04x", __FUNCTION__, cmd); + dbg("%s", __FUNCTION__); - /* Based on code from acm.c and others */ - switch (cmd) { + buf = kmalloc(2, GFP_KERNEL); + if (!buf) + goto exit; - case TIOCMGET: - dbg("%s TIOCMGET", __FUNCTION__); - if (priv->ftdi_type == sio){ - /* Request the status from the device */ - if ((ret = usb_control_msg(serial->dev, - usb_rcvctrlpipe(serial->dev, 0), - FTDI_SIO_GET_MODEM_STATUS_REQUEST, - FTDI_SIO_GET_MODEM_STATUS_REQUEST_TYPE, - 0, 0, - buf, 1, WDR_TIMEOUT)) < 0 ) { - err("%s Could not get modem status of device - err: %d", __FUNCTION__, - ret); - return(ret); - } - } else { - /* the 8U232AM returns a two byte value (the sio is a 1 byte value) - in the same - format as the data returned from the in point */ - if ((ret = usb_control_msg(serial->dev, - usb_rcvctrlpipe(serial->dev, 0), - FTDI_SIO_GET_MODEM_STATUS_REQUEST, - FTDI_SIO_GET_MODEM_STATUS_REQUEST_TYPE, - 0, 0, - buf, 2, WDR_TIMEOUT)) < 0 ) { - err("%s Could not get modem status of device - err: %d", __FUNCTION__, - ret); - return(ret); - } - } + if (priv->ftdi_type == sio) { + size = 1; + } else { + /* the 8U232AM returns a two byte value (the sio is a 1 byte value) - in the same + format as the data returned from the in point */ + size = 2; + } + ret = usb_control_msg(serial->dev, + usb_rcvctrlpipe(serial->dev, 0), + FTDI_SIO_GET_MODEM_STATUS_REQUEST, + FTDI_SIO_GET_MODEM_STATUS_REQUEST_TYPE, + 0, 0, buf, size, WDR_TIMEOUT); + if (ret < 0) { + err("%s Could not get modem status of device - err: %d", + __FUNCTION__, ret); + goto exit; + } - return put_user((buf[0] & FTDI_SIO_DSR_MASK ? TIOCM_DSR : 0) | - (buf[0] & FTDI_SIO_CTS_MASK ? TIOCM_CTS : 0) | - (buf[0] & FTDI_SIO_RI_MASK ? TIOCM_RI : 0) | - (buf[0] & FTDI_SIO_RLSD_MASK ? TIOCM_CD : 0), - (unsigned long *) arg); - break; + ret = (buf[0] & FTDI_SIO_DSR_MASK ? TIOCM_DSR : 0) | + (buf[0] & FTDI_SIO_CTS_MASK ? TIOCM_CTS : 0) | + (buf[0] & FTDI_SIO_RI_MASK ? TIOCM_RI : 0) | + (buf[0] & FTDI_SIO_RLSD_MASK ? TIOCM_CD : 0); - case TIOCMSET: /* Turns on and off the lines as specified by the mask */ - dbg("%s TIOCMSET", __FUNCTION__); - if (get_user(mask, (unsigned long *) arg)) - return -EFAULT; - urb_value = ((mask & TIOCM_DTR) ? HIGH : LOW); - if (set_dtr(serial->dev, usb_sndctrlpipe(serial->dev, 0),urb_value) < 0){ - err("Error from DTR set urb (TIOCMSET)"); +exit: + kfree(buf); + return ret; +} + +static int ftdi_sio_tiocmset (struct usb_serial_port *port, struct file *file, + unsigned int set, unsigned int clear) +{ + struct usb_serial *serial = port->serial; + int ret = 0; + + dbg("%s", __FUNCTION__); + + if (set & TIOCM_RTS) + if ((ret = set_rts(serial->dev, + usb_sndctrlpipe(serial->dev, 0), + HIGH)) < 0) { + err("Urb to set RTS failed"); + goto exit; } - urb_value = ((mask & TIOCM_RTS) ? HIGH : LOW); - if (set_rts(serial->dev, usb_sndctrlpipe(serial->dev, 0),urb_value) < 0){ - err("Error from RTS set urb (TIOCMSET)"); - } - break; - - case TIOCMBIS: /* turns on (Sets) the lines as specified by the mask */ - dbg("%s TIOCMBIS", __FUNCTION__); - if (get_user(mask, (unsigned long *) arg)) - return -EFAULT; - if (mask & TIOCM_DTR){ - if ((ret = set_dtr(serial->dev, - usb_sndctrlpipe(serial->dev, 0), - HIGH)) < 0) { - err("Urb to set DTR failed"); - return(ret); - } + + if (set & TIOCM_DTR) + if ((ret = set_dtr(serial->dev, + usb_sndctrlpipe(serial->dev, 0), + HIGH)) < 0) { + err("Urb to set DTR failed"); + goto exit; } - if (mask & TIOCM_RTS) { - if ((ret = set_rts(serial->dev, - usb_sndctrlpipe(serial->dev, 0), - HIGH)) < 0){ - err("Urb to set RTS failed"); - return(ret); - } + + if (clear & TIOCM_RTS) + if ((ret = set_rts(serial->dev, + usb_sndctrlpipe(serial->dev, 0), + LOW)) < 0) { + err("Urb to unset RTS failed"); + goto exit; } - break; - case TIOCMBIC: /* turns off (Clears) the lines as specified by the mask */ - dbg("%s TIOCMBIC", __FUNCTION__); - if (get_user(mask, (unsigned long *) arg)) - return -EFAULT; - if (mask & TIOCM_DTR){ - if ((ret = set_dtr(serial->dev, - usb_sndctrlpipe(serial->dev, 0), - LOW)) < 0){ - err("Urb to unset DTR failed"); - return(ret); - } - } - if (mask & TIOCM_RTS) { - if ((ret = set_rts(serial->dev, - usb_sndctrlpipe(serial->dev, 0), - LOW)) < 0){ - err("Urb to unset RTS failed"); - return(ret); - } + if (clear & TIOCM_DTR) + if ((ret = set_dtr(serial->dev, + usb_sndctrlpipe(serial->dev, 0), + LOW)) < 0) { + err("Urb to unset DTR failed"); + goto exit; } - break; - /* - * I had originally implemented TCSET{A,S}{,F,W} and - * TCGET{A,S} here separately, however when testing I - * found that the higher layers actually do the termios - * conversions themselves and pass the call onto - * ftdi_sio_set_termios. - * - */ +exit: + return ret; +} +static int ftdi_sio_ioctl (struct usb_serial_port *port, struct file * file, unsigned int cmd, unsigned long arg) +{ + dbg("%s cmd 0x%04x", __FUNCTION__, cmd); + + switch (cmd) { default: /* This is not an error - turns out the higher layers will do - * some ioctls itself (see comment above) + * some ioctls itself */ dbg("%s arg not supported - it was 0x%04x", __FUNCTION__,cmd); return(-ENOIOCTLCMD); -- 2.30.9