450 lines
11 KiB
C
450 lines
11 KiB
C
/*
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* Driver for the Siano SMS1xxx USB dongle
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*
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* author: Anatoly Greenblat
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*
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* Copyright (c), 2005-2008 Siano Mobile Silicon, Inc.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 3 as
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* published by the Free Software Foundation;
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*
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* Software distributed under the License is distributed on an "AS IS"
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* basis, WITHOUT WARRANTY OF ANY KIND, either express or implied.
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*
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* See the GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include <linux/module.h>
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#include <linux/init.h>
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#include "smscoreapi.h"
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#include "sms-cards.h"
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DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);
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static struct list_head g_smsdvb_clients;
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static struct mutex g_smsdvb_clientslock;
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static int smsdvb_onresponse(void *context, struct smscore_buffer_t *cb)
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{
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struct smsdvb_client_t *client = (struct smsdvb_client_t *) context;
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struct SmsMsgHdr_ST *phdr =
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(struct SmsMsgHdr_ST *)(((u8 *) cb->p) + cb->offset);
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switch (phdr->msgType) {
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case MSG_SMS_DVBT_BDA_DATA:
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dvb_dmx_swfilter(&client->demux, (u8 *)(phdr + 1),
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cb->size - sizeof(struct SmsMsgHdr_ST));
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break;
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case MSG_SMS_RF_TUNE_RES:
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complete(&client->tune_done);
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break;
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case MSG_SMS_GET_STATISTICS_RES:
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{
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struct SmsMsgStatisticsInfo_ST *p =
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(struct SmsMsgStatisticsInfo_ST *)(phdr + 1);
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if (p->Stat.IsDemodLocked) {
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client->fe_status = FE_HAS_SIGNAL |
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FE_HAS_CARRIER |
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FE_HAS_VITERBI |
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FE_HAS_SYNC |
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FE_HAS_LOCK;
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client->fe_snr = p->Stat.SNR;
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client->fe_ber = p->Stat.BER;
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if (p->Stat.InBandPwr < -95)
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client->fe_signal_strength = 0;
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else if (p->Stat.InBandPwr > -29)
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client->fe_signal_strength = 100;
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else
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client->fe_signal_strength =
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(p->Stat.InBandPwr + 95) * 3 / 2;
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} else {
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client->fe_status = 0;
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client->fe_snr =
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client->fe_ber =
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client->fe_signal_strength = 0;
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}
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complete(&client->stat_done);
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break;
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} }
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smscore_putbuffer(client->coredev, cb);
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return 0;
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}
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static void smsdvb_unregister_client(struct smsdvb_client_t *client)
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{
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/* must be called under clientslock */
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list_del(&client->entry);
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smscore_unregister_client(client->smsclient);
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dvb_unregister_frontend(&client->frontend);
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dvb_dmxdev_release(&client->dmxdev);
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dvb_dmx_release(&client->demux);
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dvb_unregister_adapter(&client->adapter);
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kfree(client);
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}
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static void smsdvb_onremove(void *context)
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{
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kmutex_lock(&g_smsdvb_clientslock);
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smsdvb_unregister_client((struct smsdvb_client_t *) context);
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kmutex_unlock(&g_smsdvb_clientslock);
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}
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static int smsdvb_start_feed(struct dvb_demux_feed *feed)
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{
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struct smsdvb_client_t *client =
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container_of(feed->demux, struct smsdvb_client_t, demux);
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struct SmsMsgData_ST PidMsg;
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sms_debug("add pid %d(%x)",
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feed->pid, feed->pid);
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PidMsg.xMsgHeader.msgSrcId = DVBT_BDA_CONTROL_MSG_ID;
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PidMsg.xMsgHeader.msgDstId = HIF_TASK;
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PidMsg.xMsgHeader.msgFlags = 0;
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PidMsg.xMsgHeader.msgType = MSG_SMS_ADD_PID_FILTER_REQ;
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PidMsg.xMsgHeader.msgLength = sizeof(PidMsg);
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PidMsg.msgData[0] = feed->pid;
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return smsclient_sendrequest(client->smsclient,
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&PidMsg, sizeof(PidMsg));
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}
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static int smsdvb_stop_feed(struct dvb_demux_feed *feed)
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{
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struct smsdvb_client_t *client =
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container_of(feed->demux, struct smsdvb_client_t, demux);
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struct SmsMsgData_ST PidMsg;
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sms_debug("remove pid %d(%x)",
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feed->pid, feed->pid);
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PidMsg.xMsgHeader.msgSrcId = DVBT_BDA_CONTROL_MSG_ID;
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PidMsg.xMsgHeader.msgDstId = HIF_TASK;
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PidMsg.xMsgHeader.msgFlags = 0;
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PidMsg.xMsgHeader.msgType = MSG_SMS_REMOVE_PID_FILTER_REQ;
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PidMsg.xMsgHeader.msgLength = sizeof(PidMsg);
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PidMsg.msgData[0] = feed->pid;
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return smsclient_sendrequest(client->smsclient,
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&PidMsg, sizeof(PidMsg));
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}
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static int smsdvb_sendrequest_and_wait(struct smsdvb_client_t *client,
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void *buffer, size_t size,
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struct completion *completion)
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{
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int rc = smsclient_sendrequest(client->smsclient, buffer, size);
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if (rc < 0)
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return rc;
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return wait_for_completion_timeout(completion,
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msecs_to_jiffies(2000)) ?
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0 : -ETIME;
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}
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static int smsdvb_send_statistics_request(struct smsdvb_client_t *client)
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{
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struct SmsMsgHdr_ST Msg = { MSG_SMS_GET_STATISTICS_REQ,
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DVBT_BDA_CONTROL_MSG_ID,
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HIF_TASK, sizeof(struct SmsMsgHdr_ST), 0 };
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return smsdvb_sendrequest_and_wait(client, &Msg, sizeof(Msg),
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&client->stat_done);
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}
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static int smsdvb_read_status(struct dvb_frontend *fe, fe_status_t *stat)
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{
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struct smsdvb_client_t *client =
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container_of(fe, struct smsdvb_client_t, frontend);
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int rc = smsdvb_send_statistics_request(client);
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if (!rc)
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*stat = client->fe_status;
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return rc;
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}
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static int smsdvb_read_ber(struct dvb_frontend *fe, u32 *ber)
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{
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struct smsdvb_client_t *client =
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container_of(fe, struct smsdvb_client_t, frontend);
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int rc = smsdvb_send_statistics_request(client);
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if (!rc)
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*ber = client->fe_ber;
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return rc;
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}
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static int smsdvb_read_signal_strength(struct dvb_frontend *fe, u16 *strength)
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{
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struct smsdvb_client_t *client =
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container_of(fe, struct smsdvb_client_t, frontend);
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int rc = smsdvb_send_statistics_request(client);
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if (!rc)
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*strength = client->fe_signal_strength;
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return rc;
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}
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static int smsdvb_read_snr(struct dvb_frontend *fe, u16 *snr)
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{
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struct smsdvb_client_t *client =
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container_of(fe, struct smsdvb_client_t, frontend);
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int rc = smsdvb_send_statistics_request(client);
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if (!rc)
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*snr = client->fe_snr;
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return rc;
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}
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static int smsdvb_get_tune_settings(struct dvb_frontend *fe,
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struct dvb_frontend_tune_settings *tune)
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{
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sms_debug("");
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tune->min_delay_ms = 400;
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tune->step_size = 250000;
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tune->max_drift = 0;
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return 0;
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}
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static int smsdvb_set_frontend(struct dvb_frontend *fe,
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struct dvb_frontend_parameters *fep)
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{
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struct smsdvb_client_t *client =
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container_of(fe, struct smsdvb_client_t, frontend);
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struct {
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struct SmsMsgHdr_ST Msg;
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u32 Data[3];
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} Msg;
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Msg.Msg.msgSrcId = DVBT_BDA_CONTROL_MSG_ID;
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Msg.Msg.msgDstId = HIF_TASK;
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Msg.Msg.msgFlags = 0;
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Msg.Msg.msgType = MSG_SMS_RF_TUNE_REQ;
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Msg.Msg.msgLength = sizeof(Msg);
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Msg.Data[0] = fep->frequency;
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Msg.Data[2] = 12000000;
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sms_debug("freq %d band %d",
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fep->frequency, fep->u.ofdm.bandwidth);
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switch (fep->u.ofdm.bandwidth) {
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case BANDWIDTH_8_MHZ: Msg.Data[1] = BW_8_MHZ; break;
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case BANDWIDTH_7_MHZ: Msg.Data[1] = BW_7_MHZ; break;
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case BANDWIDTH_6_MHZ: Msg.Data[1] = BW_6_MHZ; break;
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case BANDWIDTH_AUTO: return -EOPNOTSUPP;
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default: return -EINVAL;
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}
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return smsdvb_sendrequest_and_wait(client, &Msg, sizeof(Msg),
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&client->tune_done);
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}
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static int smsdvb_get_frontend(struct dvb_frontend *fe,
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struct dvb_frontend_parameters *fep)
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{
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struct smsdvb_client_t *client =
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container_of(fe, struct smsdvb_client_t, frontend);
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sms_debug("");
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/* todo: */
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memcpy(fep, &client->fe_params,
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sizeof(struct dvb_frontend_parameters));
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return 0;
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}
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static void smsdvb_release(struct dvb_frontend *fe)
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{
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/* do nothing */
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}
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static struct dvb_frontend_ops smsdvb_fe_ops = {
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.info = {
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.name = "Siano Mobile Digital SMS1xxx",
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.type = FE_OFDM,
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.frequency_min = 44250000,
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.frequency_max = 867250000,
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.frequency_stepsize = 250000,
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.caps = FE_CAN_INVERSION_AUTO |
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FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4 |
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FE_CAN_FEC_5_6 | FE_CAN_FEC_7_8 | FE_CAN_FEC_AUTO |
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FE_CAN_QPSK | FE_CAN_QAM_16 | FE_CAN_QAM_64 |
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FE_CAN_QAM_AUTO | FE_CAN_TRANSMISSION_MODE_AUTO |
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FE_CAN_GUARD_INTERVAL_AUTO |
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FE_CAN_RECOVER |
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FE_CAN_HIERARCHY_AUTO,
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},
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.release = smsdvb_release,
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.set_frontend = smsdvb_set_frontend,
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.get_frontend = smsdvb_get_frontend,
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.get_tune_settings = smsdvb_get_tune_settings,
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.read_status = smsdvb_read_status,
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.read_ber = smsdvb_read_ber,
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.read_signal_strength = smsdvb_read_signal_strength,
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.read_snr = smsdvb_read_snr,
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};
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static int smsdvb_hotplug(struct smscore_device_t *coredev,
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struct device *device, int arrival)
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{
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struct smsclient_params_t params;
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struct smsdvb_client_t *client;
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int rc;
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/* device removal handled by onremove callback */
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if (!arrival)
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return 0;
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if (smscore_get_device_mode(coredev) != 4) {
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sms_err("SMS Device mode is not set for "
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"DVB operation.");
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return 0;
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}
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client = kzalloc(sizeof(struct smsdvb_client_t), GFP_KERNEL);
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if (!client) {
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sms_err("kmalloc() failed");
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return -ENOMEM;
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}
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/* register dvb adapter */
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rc = dvb_register_adapter(&client->adapter,
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sms_get_board(
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smscore_get_board_id(coredev))->name,
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THIS_MODULE, device, adapter_nr);
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if (rc < 0) {
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sms_err("dvb_register_adapter() failed %d", rc);
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goto adapter_error;
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}
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/* init dvb demux */
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client->demux.dmx.capabilities = DMX_TS_FILTERING;
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client->demux.filternum = 32; /* todo: nova ??? */
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client->demux.feednum = 32;
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client->demux.start_feed = smsdvb_start_feed;
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client->demux.stop_feed = smsdvb_stop_feed;
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rc = dvb_dmx_init(&client->demux);
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if (rc < 0) {
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sms_err("dvb_dmx_init failed %d", rc);
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goto dvbdmx_error;
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}
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/* init dmxdev */
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client->dmxdev.filternum = 32;
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client->dmxdev.demux = &client->demux.dmx;
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client->dmxdev.capabilities = 0;
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rc = dvb_dmxdev_init(&client->dmxdev, &client->adapter);
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if (rc < 0) {
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sms_err("dvb_dmxdev_init failed %d", rc);
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goto dmxdev_error;
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}
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/* init and register frontend */
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memcpy(&client->frontend.ops, &smsdvb_fe_ops,
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sizeof(struct dvb_frontend_ops));
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rc = dvb_register_frontend(&client->adapter, &client->frontend);
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if (rc < 0) {
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sms_err("frontend registration failed %d", rc);
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goto frontend_error;
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}
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params.initial_id = 1;
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params.data_type = MSG_SMS_DVBT_BDA_DATA;
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params.onresponse_handler = smsdvb_onresponse;
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params.onremove_handler = smsdvb_onremove;
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params.context = client;
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rc = smscore_register_client(coredev, ¶ms, &client->smsclient);
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if (rc < 0) {
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sms_err("smscore_register_client() failed %d", rc);
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goto client_error;
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}
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client->coredev = coredev;
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init_completion(&client->tune_done);
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init_completion(&client->stat_done);
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kmutex_lock(&g_smsdvb_clientslock);
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list_add(&client->entry, &g_smsdvb_clients);
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kmutex_unlock(&g_smsdvb_clientslock);
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sms_info("success");
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return 0;
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client_error:
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dvb_unregister_frontend(&client->frontend);
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frontend_error:
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dvb_dmxdev_release(&client->dmxdev);
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dmxdev_error:
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dvb_dmx_release(&client->demux);
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dvbdmx_error:
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dvb_unregister_adapter(&client->adapter);
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adapter_error:
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kfree(client);
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return rc;
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}
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int smsdvb_register(void)
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{
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int rc;
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INIT_LIST_HEAD(&g_smsdvb_clients);
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kmutex_init(&g_smsdvb_clientslock);
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rc = smscore_register_hotplug(smsdvb_hotplug);
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sms_debug("");
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return rc;
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}
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void smsdvb_unregister(void)
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{
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smscore_unregister_hotplug(smsdvb_hotplug);
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kmutex_lock(&g_smsdvb_clientslock);
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while (!list_empty(&g_smsdvb_clients))
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smsdvb_unregister_client(
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(struct smsdvb_client_t *) g_smsdvb_clients.next);
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kmutex_unlock(&g_smsdvb_clientslock);
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}
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