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add dummy tuner with 125MByte/s dummy data stream

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This commit is contained in:
Ralph Metzler 2017-10-23 21:07:28 +02:00
parent 7e6f9d6e9d
commit 7bb6cf99e2
2 changed files with 79 additions and 0 deletions
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78
ddbridge/ddbridge-core.c
View File

@ -44,6 +44,11 @@ static int ts_loop = -1;
module_param(ts_loop, int, 0444);
MODULE_PARM_DESC(ts_loop, "TS in/out test loop on port ts_loop");
static int dummy_tuner;
module_param(dummy_tuner, int, 0444);
MODULE_PARM_DESC(dummy_tuner,
"attach dummy tuner to port 0 of supported cards");
static int vlan;
module_param(vlan, int, 0444);
MODULE_PARM_DESC(vlan, "VLAN and QoS IDs enabled");
@ -535,6 +540,8 @@ static void ddb_input_start(struct ddb_input *input)
ddbwritel(dev, 0x01, TS_CONTROL(input));
else
ddbwritel(dev, 0x09, TS_CONTROL(input));
if (input->port->type == DDB_TUNER_DUMMY)
ddbwritel(dev, 0x000fff01, TS_CONTROL2(input));
if (input->dma) {
input->dma->running = 1;
spin_unlock_irq(&input->dma->lock);
@ -1043,6 +1050,64 @@ static int locked_gate_ctrl(struct dvb_frontend *fe, int enable)
return status;
}
/****************************************************************************/
static int dummy_read_status(struct dvb_frontend *fe, enum fe_status *status)
{
*status = 0x1f;
return 0;
}
static void dummy_release(struct dvb_frontend *fe)
{
kfree(fe);
}
static struct dvb_frontend_ops dummy_ops = {
.delsys = { SYS_DVBC_ANNEX_A },
.info = {
.name = "DUMMY DVB-C/C2 DVB-T/T2",
.frequency_stepsize = 166667, /* DVB-T only */
.frequency_min = 47000000, /* DVB-T: 47125000 */
.frequency_max = 865000000, /* DVB-C: 862000000 */
.symbol_rate_min = 870000,
.symbol_rate_max = 11700000,
.caps = FE_CAN_QPSK | FE_CAN_QAM_16 | FE_CAN_QAM_32 |
FE_CAN_QAM_64 | FE_CAN_QAM_128 | FE_CAN_QAM_256 |
FE_CAN_QAM_AUTO |
FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4 |
FE_CAN_FEC_4_5 |
FE_CAN_FEC_5_6 | FE_CAN_FEC_7_8 | FE_CAN_FEC_AUTO |
FE_CAN_TRANSMISSION_MODE_AUTO |
FE_CAN_GUARD_INTERVAL_AUTO | FE_CAN_HIERARCHY_AUTO |
FE_CAN_RECOVER | FE_CAN_MUTE_TS | FE_CAN_2G_MODULATION
},
.release = dummy_release,
.read_status = dummy_read_status,
};
static struct dvb_frontend *dummy_attach(void)
{
#if (KERNEL_VERSION(4, 13, 0) > LINUX_VERSION_CODE)
struct dvb_frontend *fe = kmalloc(sizeof(*fe), __GFP_REPEAT);
#else
struct dvb_frontend *fe = kmalloc(sizeof(*fe), __GFP_RETRY_MAYFAIL);
#endif
if (fe)
fe->ops = dummy_ops;
return fe;
}
static int demod_attach_dummy(struct ddb_input *input)
{
struct ddb_dvb *dvb = &input->port->dvb[input->nr & 1];
dvb->fe = dvb_attach(dummy_attach);
return 0;
}
/****************************************************************************/
#ifdef CONFIG_DVB_DRXK
static int demod_attach_drxk(struct ddb_input *input)
{
@ -1669,6 +1734,10 @@ static int dvb_input_attach(struct ddb_input *input)
if (tuner_attach_tda18212dd(input) < 0)
return -ENODEV;
break;
case DDB_TUNER_DUMMY:
if (demod_attach_dummy(input) < 0)
return -ENODEV;
break;
default:
return 0;
}
@ -1911,6 +1980,15 @@ static void ddb_port_probe(struct ddb_port *port)
/* Handle missing ports and ports without I2C */
if (dummy_tuner && !port->nr &&
dev->link[0].ids.device == 0x0005) {
port->name = "DUMMY";
port->class = DDB_PORT_TUNER;
port->type = DDB_TUNER_DUMMY;
port->type_name = "DUMMY";
return;
}
if (port->nr == ts_loop) {
port->name = "TS LOOP";
port->class = DDB_PORT_LOOP;

1
ddbridge/ddbridge.h
View File

@ -283,6 +283,7 @@ struct ddb_port {
char *name;
char *type_name;
u32 type;
#define DDB_TUNER_DUMMY 0xffffffff
#define DDB_TUNER_NONE 0
#define DDB_TUNER_DVBS_ST 1
#define DDB_TUNER_DVBS_ST_AA 2