[PATCH] isdn4linux: Siemens Gigaset drivers - tty interface
And: Tilman Schmidt <tilman@imap.cc> This patch adds the tty interface to the gigaset module. The tty interface provides direct access to the AT command set of the Gigaset devices. Signed-off-by: Hansjoerg Lipp <hjlipp@web.de> Signed-off-by: Tilman Schmidt <tilman@imap.cc> Cc: Karsten Keil <kkeil@suse.de> Cc: Greg KH <greg@kroah.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Hansjoerg Lipp
Linus Torvalds
parent
3c66a22545
commit
ee8a4b7f85
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@ -0,0 +1,718 @@
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/*
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* interface to user space for the gigaset driver
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*
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* Copyright (c) 2004 by Hansjoerg Lipp <hjlipp@web.de>
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*
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* =====================================================================
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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* =====================================================================
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* Version: $Id: interface.c,v 1.14.4.15 2006/02/04 18:28:16 hjlipp Exp $
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* =====================================================================
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*/
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#include "gigaset.h"
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#include <linux/gigaset_dev.h>
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#include <linux/tty.h>
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#include <linux/tty_flip.h>
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/*** our ioctls ***/
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static int if_lock(struct cardstate *cs, int *arg)
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{
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int cmd = *arg;
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dbg(DEBUG_IF, "%u: if_lock (%d)", cs->minor_index, cmd);
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if (cmd > 1)
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return -EINVAL;
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if (cmd < 0) {
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*arg = atomic_read(&cs->mstate) == MS_LOCKED; //FIXME remove?
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return 0;
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}
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if (!cmd && atomic_read(&cs->mstate) == MS_LOCKED
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&& atomic_read(&cs->connected)) {
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cs->ops->set_modem_ctrl(cs, 0, TIOCM_DTR|TIOCM_RTS);
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cs->ops->baud_rate(cs, B115200);
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cs->ops->set_line_ctrl(cs, CS8);
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cs->control_state = TIOCM_DTR|TIOCM_RTS;
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}
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cs->waiting = 1;
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if (!gigaset_add_event(cs, &cs->at_state, EV_IF_LOCK,
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NULL, cmd, NULL)) {
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cs->waiting = 0;
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return -ENOMEM;
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}
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dbg(DEBUG_CMD, "scheduling IF_LOCK");
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gigaset_schedule_event(cs);
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wait_event(cs->waitqueue, !cs->waiting);
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if (cs->cmd_result >= 0) {
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*arg = cs->cmd_result;
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return 0;
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}
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return cs->cmd_result;
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}
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static int if_version(struct cardstate *cs, unsigned arg[4])
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{
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static const unsigned version[4] = GIG_VERSION;
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static const unsigned compat[4] = GIG_COMPAT;
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unsigned cmd = arg[0];
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dbg(DEBUG_IF, "%u: if_version (%d)", cs->minor_index, cmd);
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switch (cmd) {
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case GIGVER_DRIVER:
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memcpy(arg, version, sizeof version);
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return 0;
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case GIGVER_COMPAT:
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memcpy(arg, compat, sizeof compat);
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return 0;
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case GIGVER_FWBASE:
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cs->waiting = 1;
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if (!gigaset_add_event(cs, &cs->at_state, EV_IF_VER,
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NULL, 0, arg)) {
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cs->waiting = 0;
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return -ENOMEM;
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}
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dbg(DEBUG_CMD, "scheduling IF_VER");
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gigaset_schedule_event(cs);
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wait_event(cs->waitqueue, !cs->waiting);
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if (cs->cmd_result >= 0)
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return 0;
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return cs->cmd_result;
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default:
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return -EINVAL;
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}
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}
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static int if_config(struct cardstate *cs, int *arg)
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{
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dbg(DEBUG_IF, "%u: if_config (%d)", cs->minor_index, *arg);
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if (*arg != 1)
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return -EINVAL;
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if (atomic_read(&cs->mstate) != MS_LOCKED)
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return -EBUSY;
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*arg = 0;
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return gigaset_enterconfigmode(cs);
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}
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/*** the terminal driver ***/
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/* stolen from usbserial and some other tty drivers */
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static int if_open(struct tty_struct *tty, struct file *filp);
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static void if_close(struct tty_struct *tty, struct file *filp);
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static int if_ioctl(struct tty_struct *tty, struct file *file,
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unsigned int cmd, unsigned long arg);
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static int if_write_room(struct tty_struct *tty);
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static int if_chars_in_buffer(struct tty_struct *tty);
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static void if_throttle(struct tty_struct *tty);
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static void if_unthrottle(struct tty_struct *tty);
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static void if_set_termios(struct tty_struct *tty, struct termios *old);
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static int if_tiocmget(struct tty_struct *tty, struct file *file);
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static int if_tiocmset(struct tty_struct *tty, struct file *file,
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unsigned int set, unsigned int clear);
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static int if_write(struct tty_struct *tty,
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const unsigned char *buf, int count);
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static struct tty_operations if_ops = {
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.open = if_open,
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.close = if_close,
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.ioctl = if_ioctl,
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.write = if_write,
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.write_room = if_write_room,
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.chars_in_buffer = if_chars_in_buffer,
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.set_termios = if_set_termios,
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.throttle = if_throttle,
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.unthrottle = if_unthrottle,
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#if 0
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.break_ctl = serial_break,
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#endif
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.tiocmget = if_tiocmget,
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.tiocmset = if_tiocmset,
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};
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static int if_open(struct tty_struct *tty, struct file *filp)
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{
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struct cardstate *cs;
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unsigned long flags;
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dbg(DEBUG_IF, "%d+%d: %s()", tty->driver->minor_start, tty->index,
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__FUNCTION__);
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tty->driver_data = NULL;
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cs = gigaset_get_cs_by_tty(tty);
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if (!cs)
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return -ENODEV;
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if (down_interruptible(&cs->sem))
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return -ERESTARTSYS; // FIXME -EINTR?
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tty->driver_data = cs;
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++cs->open_count;
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if (cs->open_count == 1) {
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spin_lock_irqsave(&cs->lock, flags);
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cs->tty = tty;
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spin_unlock_irqrestore(&cs->lock, flags);
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tty->low_latency = 1; //FIXME test
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//FIXME
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}
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up(&cs->sem);
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return 0;
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}
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static void if_close(struct tty_struct *tty, struct file *filp)
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{
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struct cardstate *cs;
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unsigned long flags;
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cs = (struct cardstate *) tty->driver_data;
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if (!cs) {
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err("cs==NULL in %s", __FUNCTION__);
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return;
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}
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dbg(DEBUG_IF, "%u: %s()", cs->minor_index, __FUNCTION__);
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down(&cs->sem);
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if (!cs->open_count)
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warn("%s: device not opened", __FUNCTION__);
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else {
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if (!--cs->open_count) {
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spin_lock_irqsave(&cs->lock, flags);
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cs->tty = NULL;
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spin_unlock_irqrestore(&cs->lock, flags);
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//FIXME
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}
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}
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up(&cs->sem);
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}
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static int if_ioctl(struct tty_struct *tty, struct file *file,
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unsigned int cmd, unsigned long arg)
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{
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struct cardstate *cs;
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int retval = -ENODEV;
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int int_arg;
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unsigned char buf[6];
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unsigned version[4];
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cs = (struct cardstate *) tty->driver_data;
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if (!cs) {
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err("cs==NULL in %s", __FUNCTION__);
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return -ENODEV;
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}
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dbg(DEBUG_IF, "%u: %s(0x%x)", cs->minor_index, __FUNCTION__, cmd);
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if (down_interruptible(&cs->sem))
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return -ERESTARTSYS; // FIXME -EINTR?
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if (!cs->open_count)
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warn("%s: device not opened", __FUNCTION__);
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else {
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retval = 0;
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switch (cmd) {
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case GIGASET_REDIR:
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retval = get_user(int_arg, (int __user *) arg);
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if (retval >= 0)
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retval = if_lock(cs, &int_arg);
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if (retval >= 0)
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retval = put_user(int_arg, (int __user *) arg);
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break;
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case GIGASET_CONFIG:
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retval = get_user(int_arg, (int __user *) arg);
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if (retval >= 0)
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retval = if_config(cs, &int_arg);
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if (retval >= 0)
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retval = put_user(int_arg, (int __user *) arg);
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break;
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case GIGASET_BRKCHARS:
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//FIXME test if MS_LOCKED
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gigaset_dbg_buffer(DEBUG_IF, "GIGASET_BRKCHARS",
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6, (const unsigned char *) arg, 1);
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if (!atomic_read(&cs->connected)) {
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dbg(DEBUG_ANY, "can't communicate with unplugged device");
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retval = -ENODEV;
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break;
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}
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retval = copy_from_user(&buf,
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(const unsigned char __user *) arg, 6)
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? -EFAULT : 0;
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if (retval >= 0)
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retval = cs->ops->brkchars(cs, buf);
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break;
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case GIGASET_VERSION:
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retval = copy_from_user(version, (unsigned __user *) arg,
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sizeof version) ? -EFAULT : 0;
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if (retval >= 0)
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retval = if_version(cs, version);
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if (retval >= 0)
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retval = copy_to_user((unsigned __user *) arg, version,
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sizeof version)
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? -EFAULT : 0;
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break;
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default:
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dbg(DEBUG_ANY, "%s: arg not supported - 0x%04x",
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__FUNCTION__, cmd);
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retval = -ENOIOCTLCMD;
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}
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}
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up(&cs->sem);
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return retval;
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}
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static int if_tiocmget(struct tty_struct *tty, struct file *file)
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{
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struct cardstate *cs;
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int retval;
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cs = (struct cardstate *) tty->driver_data;
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if (!cs) {
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err("cs==NULL in %s", __FUNCTION__);
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return -ENODEV;
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}
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dbg(DEBUG_IF, "%u: %s()", cs->minor_index, __FUNCTION__);
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if (down_interruptible(&cs->sem))
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return -ERESTARTSYS; // FIXME -EINTR?
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// FIXME read from device?
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retval = cs->control_state & (TIOCM_RTS|TIOCM_DTR);
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up(&cs->sem);
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return retval;
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}
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static int if_tiocmset(struct tty_struct *tty, struct file *file,
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unsigned int set, unsigned int clear)
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{
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struct cardstate *cs;
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int retval;
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unsigned mc;
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cs = (struct cardstate *) tty->driver_data;
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if (!cs) {
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err("cs==NULL in %s", __FUNCTION__);
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return -ENODEV;
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}
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dbg(DEBUG_IF,
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"%u: %s(0x%x, 0x%x)", cs->minor_index, __FUNCTION__, set, clear);
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if (down_interruptible(&cs->sem))
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return -ERESTARTSYS; // FIXME -EINTR?
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if (!atomic_read(&cs->connected)) {
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dbg(DEBUG_ANY, "can't communicate with unplugged device");
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retval = -ENODEV;
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} else {
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mc = (cs->control_state | set) & ~clear & (TIOCM_RTS|TIOCM_DTR);
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retval = cs->ops->set_modem_ctrl(cs, cs->control_state, mc);
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cs->control_state = mc;
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}
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up(&cs->sem);
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return retval;
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}
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static int if_write(struct tty_struct *tty, const unsigned char *buf, int count)
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{
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struct cardstate *cs;
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int retval = -ENODEV;
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cs = (struct cardstate *) tty->driver_data;
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if (!cs) {
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err("cs==NULL in %s", __FUNCTION__);
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return -ENODEV;
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}
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dbg(DEBUG_IF, "%u: %s()", cs->minor_index, __FUNCTION__);
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if (down_interruptible(&cs->sem))
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return -ERESTARTSYS; // FIXME -EINTR?
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if (!cs->open_count)
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warn("%s: device not opened", __FUNCTION__);
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else if (atomic_read(&cs->mstate) != MS_LOCKED) {
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warn("can't write to unlocked device");
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retval = -EBUSY;
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} else if (!atomic_read(&cs->connected)) {
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dbg(DEBUG_ANY, "can't write to unplugged device");
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retval = -EBUSY; //FIXME
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} else {
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retval = cs->ops->write_cmd(cs, buf, count,
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&cs->if_wake_tasklet);
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}
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up(&cs->sem);
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return retval;
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}
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|
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static int if_write_room(struct tty_struct *tty)
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{
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struct cardstate *cs;
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int retval = -ENODEV;
|
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|
|
||||||
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cs = (struct cardstate *) tty->driver_data;
|
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if (!cs) {
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err("cs==NULL in %s", __FUNCTION__);
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return -ENODEV;
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||||||
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}
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||||||
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dbg(DEBUG_IF, "%u: %s()", cs->minor_index, __FUNCTION__);
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||||||
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if (down_interruptible(&cs->sem))
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||||||
|
return -ERESTARTSYS; // FIXME -EINTR?
|
||||||
|
|
||||||
|
if (!cs->open_count)
|
||||||
|
warn("%s: device not opened", __FUNCTION__);
|
||||||
|
else if (atomic_read(&cs->mstate) != MS_LOCKED) {
|
||||||
|
warn("can't write to unlocked device");
|
||||||
|
retval = -EBUSY; //FIXME
|
||||||
|
} else if (!atomic_read(&cs->connected)) {
|
||||||
|
dbg(DEBUG_ANY, "can't write to unplugged device");
|
||||||
|
retval = -EBUSY; //FIXME
|
||||||
|
} else
|
||||||
|
retval = cs->ops->write_room(cs);
|
||||||
|
|
||||||
|
up(&cs->sem);
|
||||||
|
|
||||||
|
return retval;
|
||||||
|
}
|
||||||
|
|
||||||
|
static int if_chars_in_buffer(struct tty_struct *tty)
|
||||||
|
{
|
||||||
|
struct cardstate *cs;
|
||||||
|
int retval = -ENODEV;
|
||||||
|
|
||||||
|
cs = (struct cardstate *) tty->driver_data;
|
||||||
|
if (!cs) {
|
||||||
|
err("cs==NULL in %s", __FUNCTION__);
|
||||||
|
return -ENODEV;
|
||||||
|
}
|
||||||
|
|
||||||
|
dbg(DEBUG_IF, "%u: %s()", cs->minor_index, __FUNCTION__);
|
||||||
|
|
||||||
|
if (down_interruptible(&cs->sem))
|
||||||
|
return -ERESTARTSYS; // FIXME -EINTR?
|
||||||
|
|
||||||
|
if (!cs->open_count)
|
||||||
|
warn("%s: device not opened", __FUNCTION__);
|
||||||
|
else if (atomic_read(&cs->mstate) != MS_LOCKED) {
|
||||||
|
warn("can't write to unlocked device");
|
||||||
|
retval = -EBUSY;
|
||||||
|
} else if (!atomic_read(&cs->connected)) {
|
||||||
|
dbg(DEBUG_ANY, "can't write to unplugged device");
|
||||||
|
retval = -EBUSY; //FIXME
|
||||||
|
} else
|
||||||
|
retval = cs->ops->chars_in_buffer(cs);
|
||||||
|
|
||||||
|
up(&cs->sem);
|
||||||
|
|
||||||
|
return retval;
|
||||||
|
}
|
||||||
|
|
||||||
|
static void if_throttle(struct tty_struct *tty)
|
||||||
|
{
|
||||||
|
struct cardstate *cs;
|
||||||
|
|
||||||
|
cs = (struct cardstate *) tty->driver_data;
|
||||||
|
if (!cs) {
|
||||||
|
err("cs==NULL in %s", __FUNCTION__);
|
||||||
|
return;
|
||||||
|
}
|
||||||
|
|
||||||
|
dbg(DEBUG_IF, "%u: %s()", cs->minor_index, __FUNCTION__);
|
||||||
|
|
||||||
|
down(&cs->sem);
|
||||||
|
|
||||||
|
if (!cs->open_count)
|
||||||
|
warn("%s: device not opened", __FUNCTION__);
|
||||||
|
else {
|
||||||
|
//FIXME
|
||||||
|
}
|
||||||
|
|
||||||
|
up(&cs->sem);
|
||||||
|
}
|
||||||
|
|
||||||
|
static void if_unthrottle(struct tty_struct *tty)
|
||||||
|
{
|
||||||
|
struct cardstate *cs;
|
||||||
|
|
||||||
|
cs = (struct cardstate *) tty->driver_data;
|
||||||
|
if (!cs) {
|
||||||
|
err("cs==NULL in %s", __FUNCTION__);
|
||||||
|
return;
|
||||||
|
}
|
||||||
|
|
||||||
|
dbg(DEBUG_IF, "%u: %s()", cs->minor_index, __FUNCTION__);
|
||||||
|
|
||||||
|
down(&cs->sem);
|
||||||
|
|
||||||
|
if (!cs->open_count)
|
||||||
|
warn("%s: device not opened", __FUNCTION__);
|
||||||
|
else {
|
||||||
|
//FIXME
|
||||||
|
}
|
||||||
|
|
||||||
|
up(&cs->sem);
|
||||||
|
}
|
||||||
|
|
||||||
|
static void if_set_termios(struct tty_struct *tty, struct termios *old)
|
||||||
|
{
|
||||||
|
struct cardstate *cs;
|
||||||
|
unsigned int iflag;
|
||||||
|
unsigned int cflag;
|
||||||
|
unsigned int old_cflag;
|
||||||
|
unsigned int control_state, new_state;
|
||||||
|
|
||||||
|
cs = (struct cardstate *) tty->driver_data;
|
||||||
|
if (!cs) {
|
||||||
|
err("cs==NULL in %s", __FUNCTION__);
|
||||||
|
return;
|
||||||
|
}
|
||||||
|
|
||||||
|
dbg(DEBUG_IF, "%u: %s()", cs->minor_index, __FUNCTION__);
|
||||||
|
|
||||||
|
down(&cs->sem);
|
||||||
|
|
||||||
|
if (!cs->open_count) {
|
||||||
|
warn("%s: device not opened", __FUNCTION__);
|
||||||
|
goto out;
|
||||||
|
}
|
||||||
|
|
||||||
|
if (!atomic_read(&cs->connected)) {
|
||||||
|
dbg(DEBUG_ANY, "can't communicate with unplugged device");
|
||||||
|
goto out;
|
||||||
|
}
|
||||||
|
|
||||||
|
// stolen from mct_u232.c
|
||||||
|
iflag = tty->termios->c_iflag;
|
||||||
|
cflag = tty->termios->c_cflag;
|
||||||
|
old_cflag = old ? old->c_cflag : cflag; //FIXME?
|
||||||
|
dbg(DEBUG_IF, "%u: iflag %x cflag %x old %x", cs->minor_index,
|
||||||
|
iflag, cflag, old_cflag);
|
||||||
|
|
||||||
|
/* get a local copy of the current port settings */
|
||||||
|
control_state = cs->control_state;
|
||||||
|
|
||||||
|
/*
|
||||||
|
* Update baud rate.
|
||||||
|
* Do not attempt to cache old rates and skip settings,
|
||||||
|
* disconnects screw such tricks up completely.
|
||||||
|
* Premature optimization is the root of all evil.
|
||||||
|
*/
|
||||||
|
|
||||||
|
/* reassert DTR and (maybe) RTS on transition from B0 */
|
||||||
|
if ((old_cflag & CBAUD) == B0) {
|
||||||
|
new_state = control_state | TIOCM_DTR;
|
||||||
|
/* don't set RTS if using hardware flow control */
|
||||||
|
if (!(old_cflag & CRTSCTS))
|
||||||
|
new_state |= TIOCM_RTS;
|
||||||
|
dbg(DEBUG_IF, "%u: from B0 - set DTR%s", cs->minor_index,
|
||||||
|
(new_state & TIOCM_RTS) ? " only" : "/RTS");
|
||||||
|
cs->ops->set_modem_ctrl(cs, control_state, new_state);
|
||||||
|
control_state = new_state;
|
||||||
|
}
|
||||||
|
|
||||||
|
cs->ops->baud_rate(cs, cflag & CBAUD);
|
||||||
|
|
||||||
|
if ((cflag & CBAUD) == B0) {
|
||||||
|
/* Drop RTS and DTR */
|
||||||
|
dbg(DEBUG_IF, "%u: to B0 - drop DTR/RTS", cs->minor_index);
|
||||||
|
new_state = control_state & ~(TIOCM_DTR | TIOCM_RTS);
|
||||||
|
cs->ops->set_modem_ctrl(cs, control_state, new_state);
|
||||||
|
control_state = new_state;
|
||||||
|
}
|
||||||
|
|
||||||
|
/*
|
||||||
|
* Update line control register (LCR)
|
||||||
|
*/
|
||||||
|
|
||||||
|
cs->ops->set_line_ctrl(cs, cflag);
|
||||||
|
|
||||||
|
#if 0
|
||||||
|
//FIXME this hangs M101 [ts 2005-03-09]
|
||||||
|
//FIXME do we need this?
|
||||||
|
/*
|
||||||
|
* Set flow control: well, I do not really now how to handle DTR/RTS.
|
||||||
|
* Just do what we have seen with SniffUSB on Win98.
|
||||||
|
*/
|
||||||
|
/* Drop DTR/RTS if no flow control otherwise assert */
|
||||||
|
dbg(DEBUG_IF, "%u: control_state %x", cs->minor_index, control_state);
|
||||||
|
new_state = control_state;
|
||||||
|
if ((iflag & IXOFF) || (iflag & IXON) || (cflag & CRTSCTS))
|
||||||
|
new_state |= TIOCM_DTR | TIOCM_RTS;
|
||||||
|
else
|
||||||
|
new_state &= ~(TIOCM_DTR | TIOCM_RTS);
|
||||||
|
if (new_state != control_state) {
|
||||||
|
dbg(DEBUG_IF, "%u: new_state %x", cs->minor_index, new_state);
|
||||||
|
gigaset_set_modem_ctrl(cs, control_state, new_state); // FIXME: mct_u232.c sets the old state here. is this a bug?
|
||||||
|
control_state = new_state;
|
||||||
|
}
|
||||||
|
#endif
|
||||||
|
|
||||||
|
/* save off the modified port settings */
|
||||||
|
cs->control_state = control_state;
|
||||||
|
|
||||||
|
out:
|
||||||
|
up(&cs->sem);
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
/* wakeup tasklet for the write operation */
|
||||||
|
static void if_wake(unsigned long data)
|
||||||
|
{
|
||||||
|
struct cardstate *cs = (struct cardstate *) data;
|
||||||
|
struct tty_struct *tty;
|
||||||
|
|
||||||
|
tty = cs->tty;
|
||||||
|
if (!tty)
|
||||||
|
return;
|
||||||
|
|
||||||
|
if ((tty->flags & (1 << TTY_DO_WRITE_WAKEUP)) &&
|
||||||
|
tty->ldisc.write_wakeup) {
|
||||||
|
dbg(DEBUG_IF, "write wakeup call");
|
||||||
|
tty->ldisc.write_wakeup(tty);
|
||||||
|
}
|
||||||
|
|
||||||
|
wake_up_interruptible(&tty->write_wait);
|
||||||
|
}
|
||||||
|
|
||||||
|
/*** interface to common ***/
|
||||||
|
|
||||||
|
void gigaset_if_init(struct cardstate *cs)
|
||||||
|
{
|
||||||
|
struct gigaset_driver *drv;
|
||||||
|
|
||||||
|
drv = cs->driver;
|
||||||
|
if (!drv->have_tty)
|
||||||
|
return;
|
||||||
|
|
||||||
|
tasklet_init(&cs->if_wake_tasklet, &if_wake, (unsigned long) cs);
|
||||||
|
tty_register_device(drv->tty, cs->minor_index, NULL);
|
||||||
|
}
|
||||||
|
|
||||||
|
void gigaset_if_free(struct cardstate *cs)
|
||||||
|
{
|
||||||
|
struct gigaset_driver *drv;
|
||||||
|
|
||||||
|
drv = cs->driver;
|
||||||
|
if (!drv->have_tty)
|
||||||
|
return;
|
||||||
|
|
||||||
|
tasklet_disable(&cs->if_wake_tasklet);
|
||||||
|
tasklet_kill(&cs->if_wake_tasklet);
|
||||||
|
tty_unregister_device(drv->tty, cs->minor_index);
|
||||||
|
}
|
||||||
|
|
||||||
|
void gigaset_if_receive(struct cardstate *cs,
|
||||||
|
unsigned char *buffer, size_t len)
|
||||||
|
{
|
||||||
|
unsigned long flags;
|
||||||
|
struct tty_struct *tty;
|
||||||
|
|
||||||
|
spin_lock_irqsave(&cs->lock, flags);
|
||||||
|
if ((tty = cs->tty) == NULL)
|
||||||
|
dbg(DEBUG_ANY, "receive on closed device");
|
||||||
|
else {
|
||||||
|
tty_buffer_request_room(tty, len);
|
||||||
|
tty_insert_flip_string(tty, buffer, len);
|
||||||
|
tty_flip_buffer_push(tty);
|
||||||
|
}
|
||||||
|
spin_unlock_irqrestore(&cs->lock, flags);
|
||||||
|
}
|
||||||
|
EXPORT_SYMBOL_GPL(gigaset_if_receive);
|
||||||
|
|
||||||
|
/* gigaset_if_initdriver
|
||||||
|
* Initialize tty interface.
|
||||||
|
* parameters:
|
||||||
|
* drv Driver
|
||||||
|
* procname Name of the driver (e.g. for /proc/tty/drivers)
|
||||||
|
* devname Name of the device files (prefix without minor number)
|
||||||
|
* devfsname Devfs name of the device files without %d
|
||||||
|
*/
|
||||||
|
void gigaset_if_initdriver(struct gigaset_driver *drv, const char *procname,
|
||||||
|
const char *devname, const char *devfsname)
|
||||||
|
{
|
||||||
|
unsigned minors = drv->minors;
|
||||||
|
int ret;
|
||||||
|
struct tty_driver *tty;
|
||||||
|
|
||||||
|
drv->have_tty = 0;
|
||||||
|
|
||||||
|
if ((drv->tty = alloc_tty_driver(minors)) == NULL)
|
||||||
|
goto enomem;
|
||||||
|
tty = drv->tty;
|
||||||
|
|
||||||
|
tty->magic = TTY_DRIVER_MAGIC,
|
||||||
|
tty->major = GIG_MAJOR,
|
||||||
|
tty->type = TTY_DRIVER_TYPE_SERIAL,
|
||||||
|
tty->subtype = SERIAL_TYPE_NORMAL,
|
||||||
|
tty->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_NO_DEVFS,
|
||||||
|
|
||||||
|
tty->driver_name = procname;
|
||||||
|
tty->name = devname;
|
||||||
|
tty->minor_start = drv->minor;
|
||||||
|
tty->num = drv->minors;
|
||||||
|
|
||||||
|
tty->owner = THIS_MODULE;
|
||||||
|
tty->devfs_name = devfsname;
|
||||||
|
|
||||||
|
tty->init_termios = tty_std_termios; //FIXME
|
||||||
|
tty->init_termios.c_cflag = B9600 | CS8 | CREAD | HUPCL | CLOCAL; //FIXME
|
||||||
|
tty_set_operations(tty, &if_ops);
|
||||||
|
|
||||||
|
ret = tty_register_driver(tty);
|
||||||
|
if (ret < 0) {
|
||||||
|
warn("failed to register tty driver (error %d)", ret);
|
||||||
|
goto error;
|
||||||
|
}
|
||||||
|
dbg(DEBUG_IF, "tty driver initialized");
|
||||||
|
drv->have_tty = 1;
|
||||||
|
return;
|
||||||
|
|
||||||
|
enomem:
|
||||||
|
warn("could not allocate tty structures");
|
||||||
|
error:
|
||||||
|
if (drv->tty)
|
||||||
|
put_tty_driver(drv->tty);
|
||||||
|
}
|
||||||
|
|
||||||
|
void gigaset_if_freedriver(struct gigaset_driver *drv)
|
||||||
|
{
|
||||||
|
if (!drv->have_tty)
|
||||||
|
return;
|
||||||
|
|
||||||
|
drv->have_tty = 0;
|
||||||
|
tty_unregister_driver(drv->tty);
|
||||||
|
put_tty_driver(drv->tty);
|
||||||
|
}
|
||||||
|
|
@ -0,0 +1,32 @@
|
||||||
|
/*
|
||||||
|
* interface to user space for the gigaset driver
|
||||||
|
*
|
||||||
|
* Copyright (c) 2004 by Hansjoerg Lipp <hjlipp@web.de>
|
||||||
|
*
|
||||||
|
* =====================================================================
|
||||||
|
* This program is free software; you can redistribute it and/or
|
||||||
|
* modify it under the terms of the GNU General Public License as
|
||||||
|
* published by the Free Software Foundation; either version 2 of
|
||||||
|
* the License, or (at your option) any later version.
|
||||||
|
* =====================================================================
|
||||||
|
* Version: $Id: gigaset_dev.h,v 1.4.4.4 2005/11/21 22:28:09 hjlipp Exp $
|
||||||
|
* =====================================================================
|
||||||
|
*/
|
||||||
|
|
||||||
|
#ifndef GIGASET_INTERFACE_H
|
||||||
|
#define GIGASET_INTERFACE_H
|
||||||
|
|
||||||
|
#include <linux/ioctl.h>
|
||||||
|
|
||||||
|
#define GIGASET_IOCTL 0x47
|
||||||
|
|
||||||
|
#define GIGVER_DRIVER 0
|
||||||
|
#define GIGVER_COMPAT 1
|
||||||
|
#define GIGVER_FWBASE 2
|
||||||
|
|
||||||
|
#define GIGASET_REDIR _IOWR (GIGASET_IOCTL, 0, int)
|
||||||
|
#define GIGASET_CONFIG _IOWR (GIGASET_IOCTL, 1, int)
|
||||||
|
#define GIGASET_BRKCHARS _IOW (GIGASET_IOCTL, 2, unsigned char[6]) //FIXME [6] okay?
|
||||||
|
#define GIGASET_VERSION _IOWR (GIGASET_IOCTL, 3, unsigned[4])
|
||||||
|
|
||||||
|
#endif
|
||||||
Loading…
Reference in New Issue