[Feature]add MT2731_MP2_MR2_SVN388 baseline version
Change-Id: Ief04314834b31e27effab435d3ca8ba33b499059
diff --git a/src/kernel/linux/v4.14/drivers/isdn/gigaset/i4l.c b/src/kernel/linux/v4.14/drivers/isdn/gigaset/i4l.c
new file mode 100644
index 0000000..2d75329
--- /dev/null
+++ b/src/kernel/linux/v4.14/drivers/isdn/gigaset/i4l.c
@@ -0,0 +1,695 @@
+/*
+ * Stuff used by all variants of the driver
+ *
+ * Copyright (c) 2001 by Stefan Eilers,
+ * Hansjoerg Lipp <hjlipp@web.de>,
+ * Tilman Schmidt <tilman@imap.cc>.
+ *
+ * =====================================================================
+ * 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.
+ * =====================================================================
+ */
+
+#include "gigaset.h"
+#include <linux/isdnif.h>
+#include <linux/export.h>
+
+#define SBUFSIZE 4096 /* sk_buff payload size */
+#define TRANSBUFSIZE 768 /* bytes per skb for transparent receive */
+#define HW_HDR_LEN 2 /* Header size used to store ack info */
+#define MAX_BUF_SIZE (SBUFSIZE - HW_HDR_LEN) /* max data packet from LL */
+
+/* == Handling of I4L IO =====================================================*/
+
+/* writebuf_from_LL
+ * called by LL to transmit data on an open channel
+ * inserts the buffer data into the send queue and starts the transmission
+ * Note that this operation must not sleep!
+ * When the buffer is processed completely, gigaset_skb_sent() should be called.
+ * parameters:
+ * driverID driver ID as assigned by LL
+ * channel channel number
+ * ack if != 0 LL wants to be notified on completion via
+ * statcallb(ISDN_STAT_BSENT)
+ * skb skb containing data to send
+ * return value:
+ * number of accepted bytes
+ * 0 if temporarily unable to accept data (out of buffer space)
+ * <0 on error (eg. -EINVAL)
+ */
+static int writebuf_from_LL(int driverID, int channel, int ack,
+ struct sk_buff *skb)
+{
+ struct cardstate *cs = gigaset_get_cs_by_id(driverID);
+ struct bc_state *bcs;
+ unsigned char *ack_header;
+ unsigned len;
+
+ if (!cs) {
+ pr_err("%s: invalid driver ID (%d)\n", __func__, driverID);
+ return -ENODEV;
+ }
+ if (channel < 0 || channel >= cs->channels) {
+ dev_err(cs->dev, "%s: invalid channel ID (%d)\n",
+ __func__, channel);
+ return -ENODEV;
+ }
+ bcs = &cs->bcs[channel];
+
+ /* can only handle linear sk_buffs */
+ if (skb_linearize(skb) < 0) {
+ dev_err(cs->dev, "%s: skb_linearize failed\n", __func__);
+ return -ENOMEM;
+ }
+ len = skb->len;
+
+ gig_dbg(DEBUG_LLDATA,
+ "Receiving data from LL (id: %d, ch: %d, ack: %d, sz: %d)",
+ driverID, channel, ack, len);
+
+ if (!len) {
+ if (ack)
+ dev_notice(cs->dev, "%s: not ACKing empty packet\n",
+ __func__);
+ return 0;
+ }
+ if (len > MAX_BUF_SIZE) {
+ dev_err(cs->dev, "%s: packet too large (%d bytes)\n",
+ __func__, len);
+ return -EINVAL;
+ }
+
+ /* set up acknowledgement header */
+ if (skb_headroom(skb) < HW_HDR_LEN) {
+ /* should never happen */
+ dev_err(cs->dev, "%s: insufficient skb headroom\n", __func__);
+ return -ENOMEM;
+ }
+ skb_set_mac_header(skb, -HW_HDR_LEN);
+ skb->mac_len = HW_HDR_LEN;
+ ack_header = skb_mac_header(skb);
+ if (ack) {
+ ack_header[0] = len & 0xff;
+ ack_header[1] = len >> 8;
+ } else {
+ ack_header[0] = ack_header[1] = 0;
+ }
+ gig_dbg(DEBUG_MCMD, "skb: len=%u, ack=%d: %02x %02x",
+ len, ack, ack_header[0], ack_header[1]);
+
+ /* pass to device-specific module */
+ return cs->ops->send_skb(bcs, skb);
+}
+
+/**
+ * gigaset_skb_sent() - acknowledge sending an skb
+ * @bcs: B channel descriptor structure.
+ * @skb: sent data.
+ *
+ * Called by hardware module {bas,ser,usb}_gigaset when the data in a
+ * skb has been successfully sent, for signalling completion to the LL.
+ */
+void gigaset_skb_sent(struct bc_state *bcs, struct sk_buff *skb)
+{
+ isdn_if *iif = bcs->cs->iif;
+ unsigned char *ack_header = skb_mac_header(skb);
+ unsigned len;
+ isdn_ctrl response;
+
+ ++bcs->trans_up;
+
+ if (skb->len)
+ dev_warn(bcs->cs->dev, "%s: skb->len==%d\n",
+ __func__, skb->len);
+
+ len = ack_header[0] + ((unsigned) ack_header[1] << 8);
+ if (len) {
+ gig_dbg(DEBUG_MCMD, "ACKing to LL (id: %d, ch: %d, sz: %u)",
+ bcs->cs->myid, bcs->channel, len);
+
+ response.driver = bcs->cs->myid;
+ response.command = ISDN_STAT_BSENT;
+ response.arg = bcs->channel;
+ response.parm.length = len;
+ iif->statcallb(&response);
+ }
+}
+EXPORT_SYMBOL_GPL(gigaset_skb_sent);
+
+/**
+ * gigaset_skb_rcvd() - pass received skb to LL
+ * @bcs: B channel descriptor structure.
+ * @skb: received data.
+ *
+ * Called by hardware module {bas,ser,usb}_gigaset when user data has
+ * been successfully received, for passing to the LL.
+ * Warning: skb must not be accessed anymore!
+ */
+void gigaset_skb_rcvd(struct bc_state *bcs, struct sk_buff *skb)
+{
+ isdn_if *iif = bcs->cs->iif;
+
+ iif->rcvcallb_skb(bcs->cs->myid, bcs->channel, skb);
+ bcs->trans_down++;
+}
+EXPORT_SYMBOL_GPL(gigaset_skb_rcvd);
+
+/**
+ * gigaset_isdn_rcv_err() - signal receive error
+ * @bcs: B channel descriptor structure.
+ *
+ * Called by hardware module {bas,ser,usb}_gigaset when a receive error
+ * has occurred, for signalling to the LL.
+ */
+void gigaset_isdn_rcv_err(struct bc_state *bcs)
+{
+ isdn_if *iif = bcs->cs->iif;
+ isdn_ctrl response;
+
+ /* if currently ignoring packets, just count down */
+ if (bcs->ignore) {
+ bcs->ignore--;
+ return;
+ }
+
+ /* update statistics */
+ bcs->corrupted++;
+
+ /* error -> LL */
+ gig_dbg(DEBUG_CMD, "sending L1ERR");
+ response.driver = bcs->cs->myid;
+ response.command = ISDN_STAT_L1ERR;
+ response.arg = bcs->channel;
+ response.parm.errcode = ISDN_STAT_L1ERR_RECV;
+ iif->statcallb(&response);
+}
+EXPORT_SYMBOL_GPL(gigaset_isdn_rcv_err);
+
+/* This function will be called by LL to send commands
+ * NOTE: LL ignores the returned value, for commands other than ISDN_CMD_IOCTL,
+ * so don't put too much effort into it.
+ */
+static int command_from_LL(isdn_ctrl *cntrl)
+{
+ struct cardstate *cs;
+ struct bc_state *bcs;
+ int retval = 0;
+ char **commands;
+ int ch;
+ int i;
+ size_t l;
+
+ gig_dbg(DEBUG_CMD, "driver: %d, command: %d, arg: 0x%lx",
+ cntrl->driver, cntrl->command, cntrl->arg);
+
+ cs = gigaset_get_cs_by_id(cntrl->driver);
+ if (cs == NULL) {
+ pr_err("%s: invalid driver ID (%d)\n", __func__, cntrl->driver);
+ return -ENODEV;
+ }
+ ch = cntrl->arg & 0xff;
+
+ switch (cntrl->command) {
+ case ISDN_CMD_IOCTL:
+ dev_warn(cs->dev, "ISDN_CMD_IOCTL not supported\n");
+ return -EINVAL;
+
+ case ISDN_CMD_DIAL:
+ gig_dbg(DEBUG_CMD,
+ "ISDN_CMD_DIAL (phone: %s, msn: %s, si1: %d, si2: %d)",
+ cntrl->parm.setup.phone, cntrl->parm.setup.eazmsn,
+ cntrl->parm.setup.si1, cntrl->parm.setup.si2);
+
+ if (ch >= cs->channels) {
+ dev_err(cs->dev,
+ "ISDN_CMD_DIAL: invalid channel (%d)\n", ch);
+ return -EINVAL;
+ }
+ bcs = cs->bcs + ch;
+ if (gigaset_get_channel(bcs) < 0) {
+ dev_err(cs->dev, "ISDN_CMD_DIAL: channel not free\n");
+ return -EBUSY;
+ }
+ switch (bcs->proto2) {
+ case L2_HDLC:
+ bcs->rx_bufsize = SBUFSIZE;
+ break;
+ default: /* assume transparent */
+ bcs->rx_bufsize = TRANSBUFSIZE;
+ }
+ dev_kfree_skb(bcs->rx_skb);
+ gigaset_new_rx_skb(bcs);
+
+ commands = kzalloc(AT_NUM * (sizeof *commands), GFP_ATOMIC);
+ if (!commands) {
+ gigaset_free_channel(bcs);
+ dev_err(cs->dev, "ISDN_CMD_DIAL: out of memory\n");
+ return -ENOMEM;
+ }
+
+ l = 3 + strlen(cntrl->parm.setup.phone);
+ commands[AT_DIAL] = kmalloc(l, GFP_ATOMIC);
+ if (!commands[AT_DIAL])
+ goto oom;
+ if (cntrl->parm.setup.phone[0] == '*' &&
+ cntrl->parm.setup.phone[1] == '*') {
+ /* internal call: translate ** prefix to CTP value */
+ commands[AT_TYPE] = kstrdup("^SCTP=0\r", GFP_ATOMIC);
+ if (!commands[AT_TYPE])
+ goto oom;
+ snprintf(commands[AT_DIAL], l,
+ "D%s\r", cntrl->parm.setup.phone + 2);
+ } else {
+ commands[AT_TYPE] = kstrdup("^SCTP=1\r", GFP_ATOMIC);
+ if (!commands[AT_TYPE])
+ goto oom;
+ snprintf(commands[AT_DIAL], l,
+ "D%s\r", cntrl->parm.setup.phone);
+ }
+
+ l = strlen(cntrl->parm.setup.eazmsn);
+ if (l) {
+ l += 8;
+ commands[AT_MSN] = kmalloc(l, GFP_ATOMIC);
+ if (!commands[AT_MSN])
+ goto oom;
+ snprintf(commands[AT_MSN], l, "^SMSN=%s\r",
+ cntrl->parm.setup.eazmsn);
+ }
+
+ switch (cntrl->parm.setup.si1) {
+ case 1: /* audio */
+ /* BC = 9090A3: 3.1 kHz audio, A-law */
+ commands[AT_BC] = kstrdup("^SBC=9090A3\r", GFP_ATOMIC);
+ if (!commands[AT_BC])
+ goto oom;
+ break;
+ case 7: /* data */
+ default: /* hope the app knows what it is doing */
+ /* BC = 8890: unrestricted digital information */
+ commands[AT_BC] = kstrdup("^SBC=8890\r", GFP_ATOMIC);
+ if (!commands[AT_BC])
+ goto oom;
+ }
+ /* ToDo: other si1 values, inspect si2, set HLC/LLC */
+
+ commands[AT_PROTO] = kmalloc(9, GFP_ATOMIC);
+ if (!commands[AT_PROTO])
+ goto oom;
+ snprintf(commands[AT_PROTO], 9, "^SBPR=%u\r", bcs->proto2);
+
+ commands[AT_ISO] = kmalloc(9, GFP_ATOMIC);
+ if (!commands[AT_ISO])
+ goto oom;
+ snprintf(commands[AT_ISO], 9, "^SISO=%u\r",
+ (unsigned) bcs->channel + 1);
+
+ if (!gigaset_add_event(cs, &bcs->at_state, EV_DIAL, commands,
+ bcs->at_state.seq_index, NULL)) {
+ for (i = 0; i < AT_NUM; ++i)
+ kfree(commands[i]);
+ kfree(commands);
+ gigaset_free_channel(bcs);
+ return -ENOMEM;
+ }
+ gigaset_schedule_event(cs);
+ break;
+ case ISDN_CMD_ACCEPTD:
+ gig_dbg(DEBUG_CMD, "ISDN_CMD_ACCEPTD");
+ if (ch >= cs->channels) {
+ dev_err(cs->dev,
+ "ISDN_CMD_ACCEPTD: invalid channel (%d)\n", ch);
+ return -EINVAL;
+ }
+ bcs = cs->bcs + ch;
+ switch (bcs->proto2) {
+ case L2_HDLC:
+ bcs->rx_bufsize = SBUFSIZE;
+ break;
+ default: /* assume transparent */
+ bcs->rx_bufsize = TRANSBUFSIZE;
+ }
+ dev_kfree_skb(bcs->rx_skb);
+ gigaset_new_rx_skb(bcs);
+ if (!gigaset_add_event(cs, &bcs->at_state,
+ EV_ACCEPT, NULL, 0, NULL))
+ return -ENOMEM;
+ gigaset_schedule_event(cs);
+
+ break;
+ case ISDN_CMD_HANGUP:
+ gig_dbg(DEBUG_CMD, "ISDN_CMD_HANGUP");
+ if (ch >= cs->channels) {
+ dev_err(cs->dev,
+ "ISDN_CMD_HANGUP: invalid channel (%d)\n", ch);
+ return -EINVAL;
+ }
+ bcs = cs->bcs + ch;
+ if (!gigaset_add_event(cs, &bcs->at_state,
+ EV_HUP, NULL, 0, NULL))
+ return -ENOMEM;
+ gigaset_schedule_event(cs);
+
+ break;
+ case ISDN_CMD_CLREAZ: /* Do not signal incoming signals */
+ dev_info(cs->dev, "ignoring ISDN_CMD_CLREAZ\n");
+ break;
+ case ISDN_CMD_SETEAZ: /* Signal incoming calls for given MSN */
+ dev_info(cs->dev, "ignoring ISDN_CMD_SETEAZ (%s)\n",
+ cntrl->parm.num);
+ break;
+ case ISDN_CMD_SETL2: /* Set L2 to given protocol */
+ if (ch >= cs->channels) {
+ dev_err(cs->dev,
+ "ISDN_CMD_SETL2: invalid channel (%d)\n", ch);
+ return -EINVAL;
+ }
+ bcs = cs->bcs + ch;
+ if (bcs->chstate & CHS_D_UP) {
+ dev_err(cs->dev,
+ "ISDN_CMD_SETL2: channel active (%d)\n", ch);
+ return -EINVAL;
+ }
+ switch (cntrl->arg >> 8) {
+ case ISDN_PROTO_L2_HDLC:
+ gig_dbg(DEBUG_CMD, "ISDN_CMD_SETL2: setting L2_HDLC");
+ bcs->proto2 = L2_HDLC;
+ break;
+ case ISDN_PROTO_L2_TRANS:
+ gig_dbg(DEBUG_CMD, "ISDN_CMD_SETL2: setting L2_VOICE");
+ bcs->proto2 = L2_VOICE;
+ break;
+ default:
+ dev_err(cs->dev,
+ "ISDN_CMD_SETL2: unsupported protocol (%lu)\n",
+ cntrl->arg >> 8);
+ return -EINVAL;
+ }
+ break;
+ case ISDN_CMD_SETL3: /* Set L3 to given protocol */
+ gig_dbg(DEBUG_CMD, "ISDN_CMD_SETL3");
+ if (ch >= cs->channels) {
+ dev_err(cs->dev,
+ "ISDN_CMD_SETL3: invalid channel (%d)\n", ch);
+ return -EINVAL;
+ }
+
+ if (cntrl->arg >> 8 != ISDN_PROTO_L3_TRANS) {
+ dev_err(cs->dev,
+ "ISDN_CMD_SETL3: unsupported protocol (%lu)\n",
+ cntrl->arg >> 8);
+ return -EINVAL;
+ }
+
+ break;
+
+ default:
+ gig_dbg(DEBUG_CMD, "unknown command %d from LL",
+ cntrl->command);
+ return -EINVAL;
+ }
+
+ return retval;
+
+oom:
+ dev_err(bcs->cs->dev, "out of memory\n");
+ for (i = 0; i < AT_NUM; ++i)
+ kfree(commands[i]);
+ kfree(commands);
+ gigaset_free_channel(bcs);
+ return -ENOMEM;
+}
+
+static void gigaset_i4l_cmd(struct cardstate *cs, int cmd)
+{
+ isdn_if *iif = cs->iif;
+ isdn_ctrl command;
+
+ command.driver = cs->myid;
+ command.command = cmd;
+ command.arg = 0;
+ iif->statcallb(&command);
+}
+
+static void gigaset_i4l_channel_cmd(struct bc_state *bcs, int cmd)
+{
+ isdn_if *iif = bcs->cs->iif;
+ isdn_ctrl command;
+
+ command.driver = bcs->cs->myid;
+ command.command = cmd;
+ command.arg = bcs->channel;
+ iif->statcallb(&command);
+}
+
+/**
+ * gigaset_isdn_icall() - signal incoming call
+ * @at_state: connection state structure.
+ *
+ * Called by main module to notify the LL that an incoming call has been
+ * received. @at_state contains the parameters of the call.
+ *
+ * Return value: call disposition (ICALL_*)
+ */
+int gigaset_isdn_icall(struct at_state_t *at_state)
+{
+ struct cardstate *cs = at_state->cs;
+ struct bc_state *bcs = at_state->bcs;
+ isdn_if *iif = cs->iif;
+ isdn_ctrl response;
+ int retval;
+
+ /* fill ICALL structure */
+ response.parm.setup.si1 = 0; /* default: unknown */
+ response.parm.setup.si2 = 0;
+ response.parm.setup.screen = 0;
+ response.parm.setup.plan = 0;
+ if (!at_state->str_var[STR_ZBC]) {
+ /* no BC (internal call): assume speech, A-law */
+ response.parm.setup.si1 = 1;
+ } else if (!strcmp(at_state->str_var[STR_ZBC], "8890")) {
+ /* unrestricted digital information */
+ response.parm.setup.si1 = 7;
+ } else if (!strcmp(at_state->str_var[STR_ZBC], "8090A3")) {
+ /* speech, A-law */
+ response.parm.setup.si1 = 1;
+ } else if (!strcmp(at_state->str_var[STR_ZBC], "9090A3")) {
+ /* 3,1 kHz audio, A-law */
+ response.parm.setup.si1 = 1;
+ response.parm.setup.si2 = 2;
+ } else {
+ dev_warn(cs->dev, "RING ignored - unsupported BC %s\n",
+ at_state->str_var[STR_ZBC]);
+ return ICALL_IGNORE;
+ }
+ if (at_state->str_var[STR_NMBR]) {
+ strlcpy(response.parm.setup.phone, at_state->str_var[STR_NMBR],
+ sizeof response.parm.setup.phone);
+ } else
+ response.parm.setup.phone[0] = 0;
+ if (at_state->str_var[STR_ZCPN]) {
+ strlcpy(response.parm.setup.eazmsn, at_state->str_var[STR_ZCPN],
+ sizeof response.parm.setup.eazmsn);
+ } else
+ response.parm.setup.eazmsn[0] = 0;
+
+ if (!bcs) {
+ dev_notice(cs->dev, "no channel for incoming call\n");
+ response.command = ISDN_STAT_ICALLW;
+ response.arg = 0;
+ } else {
+ gig_dbg(DEBUG_CMD, "Sending ICALL");
+ response.command = ISDN_STAT_ICALL;
+ response.arg = bcs->channel;
+ }
+ response.driver = cs->myid;
+ retval = iif->statcallb(&response);
+ gig_dbg(DEBUG_CMD, "Response: %d", retval);
+ switch (retval) {
+ case 0: /* no takers */
+ return ICALL_IGNORE;
+ case 1: /* alerting */
+ bcs->chstate |= CHS_NOTIFY_LL;
+ return ICALL_ACCEPT;
+ case 2: /* reject */
+ return ICALL_REJECT;
+ case 3: /* incomplete */
+ dev_warn(cs->dev,
+ "LL requested unsupported feature: Incomplete Number\n");
+ return ICALL_IGNORE;
+ case 4: /* proceeding */
+ /* Gigaset will send ALERTING anyway.
+ * There doesn't seem to be a way to avoid this.
+ */
+ return ICALL_ACCEPT;
+ case 5: /* deflect */
+ dev_warn(cs->dev,
+ "LL requested unsupported feature: Call Deflection\n");
+ return ICALL_IGNORE;
+ default:
+ dev_err(cs->dev, "LL error %d on ICALL\n", retval);
+ return ICALL_IGNORE;
+ }
+}
+
+/**
+ * gigaset_isdn_connD() - signal D channel connect
+ * @bcs: B channel descriptor structure.
+ *
+ * Called by main module to notify the LL that the D channel connection has
+ * been established.
+ */
+void gigaset_isdn_connD(struct bc_state *bcs)
+{
+ gig_dbg(DEBUG_CMD, "sending DCONN");
+ gigaset_i4l_channel_cmd(bcs, ISDN_STAT_DCONN);
+}
+
+/**
+ * gigaset_isdn_hupD() - signal D channel hangup
+ * @bcs: B channel descriptor structure.
+ *
+ * Called by main module to notify the LL that the D channel connection has
+ * been shut down.
+ */
+void gigaset_isdn_hupD(struct bc_state *bcs)
+{
+ gig_dbg(DEBUG_CMD, "sending DHUP");
+ gigaset_i4l_channel_cmd(bcs, ISDN_STAT_DHUP);
+}
+
+/**
+ * gigaset_isdn_connB() - signal B channel connect
+ * @bcs: B channel descriptor structure.
+ *
+ * Called by main module to notify the LL that the B channel connection has
+ * been established.
+ */
+void gigaset_isdn_connB(struct bc_state *bcs)
+{
+ gig_dbg(DEBUG_CMD, "sending BCONN");
+ gigaset_i4l_channel_cmd(bcs, ISDN_STAT_BCONN);
+}
+
+/**
+ * gigaset_isdn_hupB() - signal B channel hangup
+ * @bcs: B channel descriptor structure.
+ *
+ * Called by main module to notify the LL that the B channel connection has
+ * been shut down.
+ */
+void gigaset_isdn_hupB(struct bc_state *bcs)
+{
+ gig_dbg(DEBUG_CMD, "sending BHUP");
+ gigaset_i4l_channel_cmd(bcs, ISDN_STAT_BHUP);
+}
+
+/**
+ * gigaset_isdn_start() - signal device availability
+ * @cs: device descriptor structure.
+ *
+ * Called by main module to notify the LL that the device is available for
+ * use.
+ */
+void gigaset_isdn_start(struct cardstate *cs)
+{
+ gig_dbg(DEBUG_CMD, "sending RUN");
+ gigaset_i4l_cmd(cs, ISDN_STAT_RUN);
+}
+
+/**
+ * gigaset_isdn_stop() - signal device unavailability
+ * @cs: device descriptor structure.
+ *
+ * Called by main module to notify the LL that the device is no longer
+ * available for use.
+ */
+void gigaset_isdn_stop(struct cardstate *cs)
+{
+ gig_dbg(DEBUG_CMD, "sending STOP");
+ gigaset_i4l_cmd(cs, ISDN_STAT_STOP);
+}
+
+/**
+ * gigaset_isdn_regdev() - register to LL
+ * @cs: device descriptor structure.
+ * @isdnid: device name.
+ *
+ * Return value: 0 on success, error code < 0 on failure
+ */
+int gigaset_isdn_regdev(struct cardstate *cs, const char *isdnid)
+{
+ isdn_if *iif;
+
+ iif = kmalloc(sizeof *iif, GFP_KERNEL);
+ if (!iif) {
+ pr_err("out of memory\n");
+ return -ENOMEM;
+ }
+
+ if (snprintf(iif->id, sizeof iif->id, "%s_%u", isdnid, cs->minor_index)
+ >= sizeof iif->id) {
+ pr_err("ID too long: %s\n", isdnid);
+ kfree(iif);
+ return -EINVAL;
+ }
+
+ iif->owner = THIS_MODULE;
+ iif->channels = cs->channels;
+ iif->maxbufsize = MAX_BUF_SIZE;
+ iif->features = ISDN_FEATURE_L2_TRANS |
+ ISDN_FEATURE_L2_HDLC |
+ ISDN_FEATURE_L2_X75I |
+ ISDN_FEATURE_L3_TRANS |
+ ISDN_FEATURE_P_EURO;
+ iif->hl_hdrlen = HW_HDR_LEN; /* Area for storing ack */
+ iif->command = command_from_LL;
+ iif->writebuf_skb = writebuf_from_LL;
+ iif->writecmd = NULL; /* Don't support isdnctrl */
+ iif->readstat = NULL; /* Don't support isdnctrl */
+ iif->rcvcallb_skb = NULL; /* Will be set by LL */
+ iif->statcallb = NULL; /* Will be set by LL */
+
+ if (!register_isdn(iif)) {
+ pr_err("register_isdn failed\n");
+ kfree(iif);
+ return -EINVAL;
+ }
+
+ cs->iif = iif;
+ cs->myid = iif->channels; /* Set my device id */
+ cs->hw_hdr_len = HW_HDR_LEN;
+ return 0;
+}
+
+/**
+ * gigaset_isdn_unregdev() - unregister device from LL
+ * @cs: device descriptor structure.
+ */
+void gigaset_isdn_unregdev(struct cardstate *cs)
+{
+ gig_dbg(DEBUG_CMD, "sending UNLOAD");
+ gigaset_i4l_cmd(cs, ISDN_STAT_UNLOAD);
+ kfree(cs->iif);
+ cs->iif = NULL;
+}
+
+/**
+ * gigaset_isdn_regdrv() - register driver to LL
+ */
+void gigaset_isdn_regdrv(void)
+{
+ pr_info("ISDN4Linux interface\n");
+ /* nothing to do */
+}
+
+/**
+ * gigaset_isdn_unregdrv() - unregister driver from LL
+ */
+void gigaset_isdn_unregdrv(void)
+{
+ /* nothing to do */
+}