V4L/DVB (8258): add support for SMS1010 and SMS1150 based digital television devices

initial driver drop, provided by Siano Mobile Silicon, Inc.

Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

1 files changed, 438 insertions, 0 deletions

diff --git a/drivers/media/mdtv/smsdvb.c b/drivers/media/mdtv/smsdvb.c
new file mode 100644
index 00000000000..f2ed1718d18
--- /dev/null
+++ b/drivers/media/mdtv/smsdvb.c
@@ -0,0 +1,438 @@
+#include <linux/module.h>
+#include <linux/init.h>
+
+#include "dmxdev.h"
+#include "dvbdev.h"
+#include "dvb_demux.h"
+#include "dvb_frontend.h"
+
+#include "smskdefs.h" // page, scatterlist, kmutex
+#include "smscoreapi.h"
+#include "smstypes.h"
+
+typedef struct _smsdvb_client
+{
+	struct list_head entry;
+
+	smscore_device_t	*coredev;
+	smscore_client_t	*smsclient;
+
+	struct dvb_adapter	adapter;
+	struct dvb_demux	demux;
+	struct dmxdev		dmxdev;
+	struct dvb_frontend	frontend;
+
+	fe_status_t			fe_status;
+	int					fe_ber, fe_snr, fe_signal_strength;
+
+	struct completion	tune_done, stat_done;
+
+	// todo: save freq/band instead whole struct
+	struct dvb_frontend_parameters fe_params;
+
+} smsdvb_client_t;
+
+struct list_head g_smsdvb_clients;
+kmutex_t g_smsdvb_clientslock;
+
+int smsdvb_onresponse(void *context, smscore_buffer_t *cb)
+{
+	smsdvb_client_t *client = (smsdvb_client_t *) context;
+	SmsMsgHdr_ST *phdr = (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(SmsMsgHdr_ST));
+			break;
+
+		case MSG_SMS_RF_TUNE_RES:
+			complete(&client->tune_done);
+			break;
+
+		case MSG_SMS_GET_STATISTICS_RES:
+		{
+			SmsMsgStatisticsInfo_ST* p = (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;
+}
+
+void smsdvb_unregister_client(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);
+}
+
+void smsdvb_onremove(void *context)
+{
+	kmutex_lock(&g_smsdvb_clientslock);
+
+	smsdvb_unregister_client((smsdvb_client_t*) context);
+
+	kmutex_unlock(&g_smsdvb_clientslock);
+}
+
+static int smsdvb_start_feed(struct dvb_demux_feed *feed)
+{
+	smsdvb_client_t *client = container_of(feed->demux, smsdvb_client_t, demux);
+	SmsMsgData_ST PidMsg;
+
+	printk("%s add pid %d(%x)\n", __FUNCTION__, 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)
+{
+	smsdvb_client_t *client = container_of(feed->demux, smsdvb_client_t, demux);
+	SmsMsgData_ST PidMsg;
+
+	printk("%s remove pid %d(%x)\n", __FUNCTION__, 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(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(smsdvb_client_t *client)
+{
+	SmsMsgHdr_ST Msg = { MSG_SMS_GET_STATISTICS_REQ, DVBT_BDA_CONTROL_MSG_ID, HIF_TASK, sizeof(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)
+{
+	smsdvb_client_t *client = container_of(fe, 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)
+{
+	smsdvb_client_t *client = container_of(fe, 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)
+{
+	smsdvb_client_t *client = container_of(fe, 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)
+{
+	smsdvb_client_t *client = container_of(fe, 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)
+{
+	printk("%s\n", __FUNCTION__);
+
+	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)
+{
+	smsdvb_client_t *client = container_of(fe, smsdvb_client_t, frontend);
+
+	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;
+
+	printk("%s freq %d band %d\n", __FUNCTION__, 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_5_MHZ: Msg.Data[1] = BW_5_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)
+{
+	smsdvb_client_t *client = container_of(fe, smsdvb_client_t, frontend);
+
+	printk("%s\n", __FUNCTION__);
+
+	// 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 SMS10xx",
+		.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,
+};
+
+int smsdvb_hotplug(smscore_device_t *coredev, struct device* device, int arrival)
+{
+	smsclient_params_t params;
+	smsdvb_client_t* client;
+	int rc;
+
+	// device removal handled by onremove callback
+	if (!arrival)
+		return 0;
+
+	if (smscore_get_device_mode(coredev) != 4)
+	{
+		rc = smscore_set_device_mode(coredev, 4);
+		if (rc < 0)
+			return rc;
+	}
+
+	client = kzalloc(sizeof(smsdvb_client_t), GFP_KERNEL);
+	if (!client)
+	{
+		printk(KERN_INFO "%s kmalloc() failed\n", __FUNCTION__);
+		return -ENOMEM;
+	}
+
+	// register dvb adapter
+	rc = dvb_register_adapter(&client->adapter, "Siano Digital Receiver", THIS_MODULE, device);
+	if (rc < 0)
+	{
+		printk("%s dvb_register_adapter() failed %d\n", __func__, 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)
+	{
+		printk("%s dvb_dmx_init failed %d\n\n", __FUNCTION__, 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)
+	{
+		printk("%s dvb_dmxdev_init failed %d\n", __FUNCTION__, 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)
+	{
+		printk("%s frontend registration failed %d\n", __FUNCTION__, rc);
+		goto frontend_error;
+	}
+
+	params.initial_id = 0;
+	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)
+	{
+		printk(KERN_INFO "%s smscore_register_client() failed %d\n", __FUNCTION__, 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);
+
+	printk(KERN_INFO "%s success\n", __FUNCTION__);
+
+	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_module_init(void)
+{
+	int rc;
+
+	INIT_LIST_HEAD(&g_smsdvb_clients);
+	kmutex_init(&g_smsdvb_clientslock);
+
+	rc = smscore_register_hotplug(smsdvb_hotplug);
+
+	printk(KERN_INFO "%s, rc %d\n", __FUNCTION__, rc);
+
+	return rc;
+}
+
+void smsdvb_module_exit(void)
+{
+	smscore_unregister_hotplug(smsdvb_hotplug);
+
+	kmutex_lock(&g_smsdvb_clientslock);
+
+	while (!list_empty(&g_smsdvb_clients))
+		smsdvb_unregister_client((smsdvb_client_t*) g_smsdvb_clients.next);
+
+	kmutex_unlock(&g_smsdvb_clientslock);
+
+	printk(KERN_INFO "%s\n", __FUNCTION__);
+}
+
+module_init(smsdvb_module_init);
+module_exit(smsdvb_module_exit);
+
+MODULE_DESCRIPTION("smsdvb dvb-api module");
+MODULE_AUTHOR("Anatoly Greenblatt,,, (anatolyg@siano-ms.com)");
+MODULE_LICENSE("GPL");