drivers/tty/n_gsm.c

172 	u32 modem_rx;		/* Our incoming virtual modem lines */
173 	u32 modem_tx;		/* Our outgoing modem lines */
394 /* Virtual modem bits */
534  *	gsm_encode_modem	-	encode modem data bits
537  *	Returns the correct GSM encoded modem status bits (6 bit field) for
544 	/* FC is true flow control not modem bits */
612 	case 2: /* Unstructured with modem bits. */
1171  *	interface which is a byte stream with optional modem data.
1182 	/* for modem bits without break data */
1202 	case 2: /* Unstructured with modem bits.
1295  *	gsm_dlci_modem_output	-	try and push modem status out of a DLCI
1297  *	@dlci: the DLCI to pull modem status from
1300  *	Push an empty frame in to the transmit queue to update the modem status
1313 	/* for modem bits without break data */
1317 	case 2: /* Unstructured with modem bits. */
1337 	case 2: /* Unstructured with modem bits. */
1495  *	gsm_process_modem	-	process received modem status
1498  *	@modem: modem bits (full EA)
1501  *	Used when a modem control message or line state inline in adaption
1502  *	layer 2 is processed. Sort out the local modem state and throttles
1506 							u32 modem, int slen)
1512 	/* The modem status command can either contain one octet (V.24 signals)
1518 		modem = modem & 0x7f;
1520 		brk = modem & 0x7f;
1521 		modem = (modem >> 7) & 0x7f;
1525 	fc = (modem & MDM_FC) || !(modem & MDM_RTR);
1534 	/* Map modem bits */
1535 	if (modem & MDM_RTC)
1537 	if (modem & MDM_RTR)
1539 	if (modem & MDM_IC)
1541 	if (modem & MDM_DV)
1668  *	gsm_control_modem	-	modem status received
1673  *	We have received a modem status control message. This is used by
1674  *	the GSM mux protocol to pass virtual modem line status and optionally
1682 	unsigned int modem = 0;
1706 	/* get the modem status */
1707 	len = gsm_read_ea_val(&modem, dp, cl);
1712 	gsm_process_modem(tty, dlci, modem, cl);
1793  *	The modem sends us a two byte message on the control channel whenever
1885 		/* Out of band modem line change indicator for a DLCI */
2173 	/* Send current modem state */
2279  *	to the modem which should then reply with a UA or ADM, at which point
2368  *	to the modem which should then reply with a UA, at which point we
2402 	unsigned int modem = 0;
2414 		len = gsm_read_ea_val(&modem, data, clen);
2419 			gsm_process_modem(tty, dlci, modem, len);
2423 		/* Skip processed modem data */
3120  *	finally kick off connecting to DLCI 0 on the modem.
3511  *	modem. Currently called from the line discipline set up but
4053  *	gsm_modem_upd_via_data	-	send modem bits via convergence layer
4075  *	gsm_modem_upd_via_msc	-	send modem bits via control frame
4104  *	gsm_modem_update	-	send modem status line state
4127  * gsm_wait_modem_change - wait for modem status line change
4129  * @mask: modem status line bits
4132  * - any given modem status line bit changed
4449 	   then have to remap modem signals each way according to whether
4450 	   our virtual cable is null modem etc .. */