[media] rtl2832: implement DVBv5 CNR statistic
DVBv5 CNR. Signed-off-by: Antti Palosaari <crope@iki.fi> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
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d10165815b
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19d273d635
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@ -367,6 +367,7 @@ static int rtl2832_init(struct dvb_frontend *fe)
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{
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struct rtl2832_dev *dev = fe->demodulator_priv;
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struct i2c_client *client = dev->client;
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struct dtv_frontend_properties *c = &dev->fe.dtv_property_cache;
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const struct rtl2832_reg_value *init;
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int i, ret, len;
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/* initialization values for the demodulator registers */
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@ -472,11 +473,14 @@ static int rtl2832_init(struct dvb_frontend *fe)
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if (ret)
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goto err;
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#endif
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/* init stats here in order signal app which stats are supported */
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c->cnr.len = 1;
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c->cnr.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
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/* start statistics polling */
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schedule_delayed_work(&dev->stat_work, msecs_to_jiffies(2000));
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dev->sleeping = false;
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return ret;
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err:
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dev_dbg(&client->dev, "failed=%d\n", ret);
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return ret;
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@ -489,6 +493,9 @@ static int rtl2832_sleep(struct dvb_frontend *fe)
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dev_dbg(&client->dev, "\n");
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dev->sleeping = true;
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/* stop statistics polling */
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cancel_delayed_work_sync(&dev->stat_work);
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dev->fe_status = 0;
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return 0;
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}
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@ -771,6 +778,7 @@ static int rtl2832_read_status(struct dvb_frontend *fe, fe_status_t *status)
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FE_HAS_VITERBI;
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}*/
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dev->fe_status = *status;
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return ret;
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err:
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dev_dbg(&client->dev, "failed=%d\n", ret);
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@ -843,6 +851,66 @@ err:
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return ret;
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}
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static void rtl2832_stat_work(struct work_struct *work)
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{
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struct rtl2832_dev *dev = container_of(work, struct rtl2832_dev, stat_work.work);
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struct i2c_client *client = dev->client;
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struct dtv_frontend_properties *c = &dev->fe.dtv_property_cache;
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int ret, tmp;
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u8 u8tmp, buf[2];
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u16 u16tmp;
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dev_dbg(&client->dev, "\n");
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/* CNR */
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if (dev->fe_status & FE_HAS_VITERBI) {
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unsigned hierarchy, constellation;
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#define CONSTELLATION_NUM 3
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#define HIERARCHY_NUM 4
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static const u32 constant[CONSTELLATION_NUM][HIERARCHY_NUM] = {
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{85387325, 85387325, 85387325, 85387325},
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{86676178, 86676178, 87167949, 87795660},
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{87659938, 87659938, 87885178, 88241743},
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};
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ret = rtl2832_bulk_read(client, 0x33c, &u8tmp, 1);
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if (ret)
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goto err;
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constellation = (u8tmp >> 2) & 0x03; /* [3:2] */
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if (constellation > CONSTELLATION_NUM - 1)
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goto err_schedule_delayed_work;
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hierarchy = (u8tmp >> 4) & 0x07; /* [6:4] */
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if (hierarchy > HIERARCHY_NUM - 1)
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goto err_schedule_delayed_work;
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ret = rtl2832_bulk_read(client, 0x40c, buf, 2);
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if (ret)
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goto err;
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u16tmp = buf[0] << 8 | buf[1] << 0;
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if (u16tmp)
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tmp = (constant[constellation][hierarchy] -
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intlog10(u16tmp)) / ((1 << 24) / 10000);
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else
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tmp = 0;
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dev_dbg(&client->dev, "cnr raw=%u\n", u16tmp);
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c->cnr.stat[0].scale = FE_SCALE_DECIBEL;
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c->cnr.stat[0].svalue = tmp;
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} else {
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c->cnr.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
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}
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err_schedule_delayed_work:
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schedule_delayed_work(&dev->stat_work, msecs_to_jiffies(2000));
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return;
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err:
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dev_dbg(&client->dev, "failed=%d\n", ret);
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}
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/*
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* I2C gate/mux/repeater logic
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* We must use unlocked __i2c_transfer() here (through regmap) because of I2C
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@ -1162,6 +1230,7 @@ static int rtl2832_probe(struct i2c_client *client,
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}
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dev->sleeping = true;
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INIT_DELAYED_WORK(&dev->i2c_gate_work, rtl2832_i2c_gate_work);
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INIT_DELAYED_WORK(&dev->stat_work, rtl2832_stat_work);
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/* create regmap */
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dev->regmap = regmap_init(&client->dev, ®map_bus, client,
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®map_config);
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@ -33,7 +33,8 @@ struct rtl2832_dev {
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struct i2c_adapter *i2c_adapter;
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struct i2c_adapter *i2c_adapter_tuner;
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struct dvb_frontend fe;
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struct delayed_work stat_work;
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fe_status_t fe_status;
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bool i2c_gate_state;
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bool sleeping;
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struct delayed_work i2c_gate_work;
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