63 static int write_modem(struct cardstate *cs)  in write_modem()  argument
65 	struct tty_struct *tty = cs->hw.ser->tty;  in write_modem()
66 	struct bc_state *bcs = &cs->bcs[0];	/* only one channel */  in write_modem()
85 		flush_send_queue(cs);  in write_modem()
105 static int send_cb(struct cardstate *cs)  in send_cb()  argument
107 	struct tty_struct *tty = cs->hw.ser->tty;  in send_cb()
115 	cb = cs->cmdbuf;  in send_cb()
125 			flush_send_queue(cs);  in send_cb()
131 			sent, cb->len, cs->cmdbytes);  in send_cb()
135 		spin_lock_irqsave(&cs->cmdlock, flags);  in send_cb()
136 		cs->cmdbytes -= cs->curlen;  in send_cb()
138 		cs->cmdbuf = cb = cb->next;  in send_cb()
141 			cs->curlen = cb->len;  in send_cb()
143 			cs->lastcmdbuf = NULL;  in send_cb()
144 			cs->curlen = 0;  in send_cb()
146 		spin_unlock_irqrestore(&cs->cmdlock, flags);  in send_cb()
163 	struct cardstate *cs = (struct cardstate *) data;  in gigaset_modem_fill()  local
168 	if (!cs) {  in gigaset_modem_fill()
172 	bcs = cs->bcs;  in gigaset_modem_fill()
179 		sent = send_cb(cs);  in gigaset_modem_fill()
198 	if (write_modem(cs) < 0)  in gigaset_modem_fill()
205 static void flush_send_queue(struct cardstate *cs)  in flush_send_queue()  argument
212 	spin_lock_irqsave(&cs->cmdlock, flags);  in flush_send_queue()
213 	while ((cb = cs->cmdbuf) != NULL) {  in flush_send_queue()
214 		cs->cmdbuf = cb->next;  in flush_send_queue()
219 	cs->cmdbuf = cs->lastcmdbuf = NULL;  in flush_send_queue()
220 	cs->cmdbytes = cs->curlen = 0;  in flush_send_queue()
221 	spin_unlock_irqrestore(&cs->cmdlock, flags);  in flush_send_queue()
224 	if (cs->bcs->tx_skb)  in flush_send_queue()
225 		dev_kfree_skb_any(cs->bcs->tx_skb);  in flush_send_queue()
226 	while ((skb = skb_dequeue(&cs->bcs->squeue)) != NULL)  in flush_send_queue()
244 static int gigaset_write_cmd(struct cardstate *cs, struct cmdbuf_t *cb)  in gigaset_write_cmd()  argument
248 	gigaset_dbg_buffer(cs->mstate != MS_LOCKED ?  in gigaset_write_cmd()
252 	spin_lock_irqsave(&cs->cmdlock, flags);  in gigaset_write_cmd()
253 	cb->prev = cs->lastcmdbuf;  in gigaset_write_cmd()
254 	if (cs->lastcmdbuf)  in gigaset_write_cmd()
255 		cs->lastcmdbuf->next = cb;  in gigaset_write_cmd()
257 		cs->cmdbuf = cb;  in gigaset_write_cmd()
258 		cs->curlen = cb->len;  in gigaset_write_cmd()
260 	cs->cmdbytes += cb->len;  in gigaset_write_cmd()
261 	cs->lastcmdbuf = cb;  in gigaset_write_cmd()
262 	spin_unlock_irqrestore(&cs->cmdlock, flags);  in gigaset_write_cmd()
264 	spin_lock_irqsave(&cs->lock, flags);  in gigaset_write_cmd()
265 	if (cs->connected)  in gigaset_write_cmd()
266 		tasklet_schedule(&cs->write_tasklet);  in gigaset_write_cmd()
267 	spin_unlock_irqrestore(&cs->lock, flags);  in gigaset_write_cmd()
279 static int gigaset_write_room(struct cardstate *cs)  in gigaset_write_room()  argument
283 	bytes = cs->cmdbytes;  in gigaset_write_room()
295 static int gigaset_chars_in_buffer(struct cardstate *cs)  in gigaset_chars_in_buffer()  argument
297 	return cs->cmdbytes;  in gigaset_chars_in_buffer()
307 static int gigaset_brkchars(struct cardstate *cs, const unsigned char buf[6])  in gigaset_brkchars()  argument
368 static void gigaset_freecshw(struct cardstate *cs)  in gigaset_freecshw()  argument
370 	tasklet_kill(&cs->write_tasklet);  in gigaset_freecshw()
371 	if (!cs->hw.ser)  in gigaset_freecshw()
373 	dev_set_drvdata(&cs->hw.ser->dev.dev, NULL);  in gigaset_freecshw()
374 	platform_device_unregister(&cs->hw.ser->dev);  in gigaset_freecshw()
375 	kfree(cs->hw.ser);  in gigaset_freecshw()
376 	cs->hw.ser = NULL;  in gigaset_freecshw()
392 static int gigaset_initcshw(struct cardstate *cs)  in gigaset_initcshw()  argument
402 	cs->hw.ser = scs;  in gigaset_initcshw()
404 	cs->hw.ser->dev.name = GIGASET_MODULENAME;  in gigaset_initcshw()
405 	cs->hw.ser->dev.id = cs->minor_index;  in gigaset_initcshw()
406 	cs->hw.ser->dev.dev.release = gigaset_device_release;  in gigaset_initcshw()
407 	rc = platform_device_register(&cs->hw.ser->dev);  in gigaset_initcshw()
410 		kfree(cs->hw.ser);  in gigaset_initcshw()
411 		cs->hw.ser = NULL;  in gigaset_initcshw()
414 	dev_set_drvdata(&cs->hw.ser->dev.dev, cs);  in gigaset_initcshw()
416 	tasklet_init(&cs->write_tasklet,  in gigaset_initcshw()
417 		     gigaset_modem_fill, (unsigned long) cs);  in gigaset_initcshw()
429 static int gigaset_set_modem_ctrl(struct cardstate *cs, unsigned old_state,  in gigaset_set_modem_ctrl()  argument
432 	struct tty_struct *tty = cs->hw.ser->tty;  in gigaset_set_modem_ctrl()
445 static int gigaset_baud_rate(struct cardstate *cs, unsigned cflag)  in gigaset_baud_rate()  argument
450 static int gigaset_set_line_ctrl(struct cardstate *cs, unsigned cflag)  in gigaset_set_line_ctrl()  argument
481 	struct cardstate *cs = tty->disc_data;  in cs_get()  local
483 	if (!cs || !cs->hw.ser) {  in cs_get()
487 	atomic_inc(&cs->hw.ser->refcnt);  in cs_get()
488 	return cs;  in cs_get()
491 static void cs_put(struct cardstate *cs)  in cs_put()  argument
493 	if (atomic_dec_and_test(&cs->hw.ser->refcnt))  in cs_put()
494 		complete(&cs->hw.ser->dead_cmp);  in cs_put()
504 	struct cardstate *cs;  in gigaset_tty_open()  local
517 	cs = gigaset_initcs(driver, 1, 1, 0, cidmode, GIGASET_MODULENAME);  in gigaset_tty_open()
518 	if (!cs) {  in gigaset_tty_open()
523 	cs->dev = &cs->hw.ser->dev.dev;  in gigaset_tty_open()
524 	cs->hw.ser->tty = tty;  in gigaset_tty_open()
525 	atomic_set(&cs->hw.ser->refcnt, 1);  in gigaset_tty_open()
526 	init_completion(&cs->hw.ser->dead_cmp);  in gigaset_tty_open()
527 	tty->disc_data = cs;  in gigaset_tty_open()
543 		cs->mstate = MS_LOCKED;  in gigaset_tty_open()
544 	rc = gigaset_start(cs);  in gigaset_tty_open()
546 		tasklet_kill(&cs->write_tasklet);  in gigaset_tty_open()
556 	gigaset_freecs(cs);  in gigaset_tty_open()
567 	struct cardstate *cs = tty->disc_data;  in gigaset_tty_close()  local
571 	if (!cs) {  in gigaset_tty_close()
579 	if (!cs->hw.ser)  in gigaset_tty_close()
583 		if (!atomic_dec_and_test(&cs->hw.ser->refcnt))  in gigaset_tty_close()
584 			wait_for_completion(&cs->hw.ser->dead_cmp);  in gigaset_tty_close()
588 	gigaset_stop(cs);  in gigaset_tty_close()
589 	tasklet_kill(&cs->write_tasklet);  in gigaset_tty_close()
590 	flush_send_queue(cs);  in gigaset_tty_close()
591 	cs->dev = NULL;  in gigaset_tty_close()
592 	gigaset_freecs(cs);  in gigaset_tty_close()
640 	struct cardstate *cs = cs_get(tty);  in gigaset_tty_ioctl()  local
644 	if (!cs)  in gigaset_tty_ioctl()
663 			flush_send_queue(cs);  in gigaset_tty_ioctl()
673 	cs_put(cs);  in gigaset_tty_ioctl()
693 	struct cardstate *cs = cs_get(tty);  in gigaset_tty_receive()  local
697 	if (!cs)  in gigaset_tty_receive()
699 	inbuf = cs->inbuf;  in gigaset_tty_receive()
701 		dev_err(cs->dev, "%s: no inbuf\n", __func__);  in gigaset_tty_receive()
702 		cs_put(cs);  in gigaset_tty_receive()
724 			dev_err(cs->dev,  in gigaset_tty_receive()
738 	gigaset_schedule_event(cs);  in gigaset_tty_receive()
739 	cs_put(cs);  in gigaset_tty_receive()
748 	struct cardstate *cs = cs_get(tty);  in gigaset_tty_wakeup()  local
751 	if (!cs)  in gigaset_tty_wakeup()
753 	tasklet_schedule(&cs->write_tasklet);  in gigaset_tty_wakeup()
754 	cs_put(cs);  in gigaset_tty_wakeup()