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