1 files changed, 449 insertions, 0 deletions

diff --git a/drivers/media/dvb/siano/smsdvb.c b/drivers/media/dvb/siano/smsdvb.c
new file mode 100644
index 000000000000..6f9c18563867
--- /dev/null
+++ b/drivers/media/dvb/siano/smsdvb.c
@@ -0,0 +1,449 @@
+/*
+ *  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 3 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);
+
+struct list_head g_smsdvb_clients;
+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, &params, &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);
+}