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authorAntti Palosaari <crope@iki.fi>2015-04-21 11:14:44 -0300
committerMauro Carvalho Chehab <mchehab@osg.samsung.com>2015-08-11 07:34:58 -0300
commit267897a4708fd7a0592333f33a4a7c393c999ab7 (patch)
treea6d9b649f9e81a3af817e4ff27433a9e76a3b5c9 /drivers/media/dvb-frontends
parent4c4acb7a7e81e41901825ca2afb064ada672b39c (diff)
[media] tda10071: implement DVBv5 statistics
Implement DVBv5 CNR, signal strength, BER and block errors. Wrap legacy DVBv3 statistics to DVBv5 internally. Signed-off-by: Antti Palosaari <crope@iki.fi> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Diffstat (limited to 'drivers/media/dvb-frontends')
-rw-r--r--drivers/media/dvb-frontends/tda10071.c258
-rw-r--r--drivers/media/dvb-frontends/tda10071_priv.h7
2 files changed, 135 insertions, 130 deletions
diff --git a/drivers/media/dvb-frontends/tda10071.c b/drivers/media/dvb-frontends/tda10071.c
index 5e949170d75d..0b391adf1e41 100644
--- a/drivers/media/dvb-frontends/tda10071.c
+++ b/drivers/media/dvb-frontends/tda10071.c
@@ -377,8 +377,11 @@ static int tda10071_read_status(struct dvb_frontend *fe, enum fe_status *status)
{
struct tda10071_dev *dev = fe->demodulator_priv;
struct i2c_client *client = dev->client;
+ struct dtv_frontend_properties *c = &fe->dtv_property_cache;
+ struct tda10071_cmd cmd;
int ret;
unsigned int uitmp;
+ u8 buf[8];
*status = 0;
@@ -401,71 +404,105 @@ static int tda10071_read_status(struct dvb_frontend *fe, enum fe_status *status)
dev->fe_status = *status;
- return ret;
-error:
- dev_dbg(&client->dev, "failed=%d\n", ret);
- return ret;
-}
+ /* signal strength */
+ if (dev->fe_status & FE_HAS_SIGNAL) {
+ cmd.args[0] = CMD_GET_AGCACC;
+ cmd.args[1] = 0;
+ cmd.len = 2;
+ ret = tda10071_cmd_execute(dev, &cmd);
+ if (ret)
+ goto error;
-static int tda10071_read_snr(struct dvb_frontend *fe, u16 *snr)
-{
- struct tda10071_dev *dev = fe->demodulator_priv;
- struct i2c_client *client = dev->client;
- int ret;
- u8 buf[2];
+ /* input power estimate dBm */
+ ret = regmap_read(dev->regmap, 0x50, &uitmp);
+ if (ret)
+ goto error;
- if (!dev->warm || !(dev->fe_status & FE_HAS_LOCK)) {
- *snr = 0;
- ret = 0;
- goto error;
+ c->strength.stat[0].scale = FE_SCALE_DECIBEL;
+ c->strength.stat[0].svalue = (int) (uitmp - 256) * 1000;
+ } else {
+ c->strength.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
}
- ret = regmap_bulk_read(dev->regmap, 0x3a, buf, 2);
- if (ret)
- goto error;
+ /* CNR */
+ if (dev->fe_status & FE_HAS_VITERBI) {
+ /* Es/No */
+ ret = regmap_bulk_read(dev->regmap, 0x3a, buf, 2);
+ if (ret)
+ goto error;
- /* Es/No dBx10 */
- *snr = buf[0] << 8 | buf[1];
+ c->cnr.stat[0].scale = FE_SCALE_DECIBEL;
+ c->cnr.stat[0].svalue = (buf[0] << 8 | buf[1] << 0) * 100;
+ } else {
+ c->cnr.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
+ }
- return ret;
-error:
- dev_dbg(&client->dev, "failed=%d\n", ret);
- return ret;
-}
+ /* UCB/PER/BER */
+ if (dev->fe_status & FE_HAS_LOCK) {
+ /* TODO: report total bits/packets */
+ u8 delivery_system, reg, len;
-static int tda10071_read_signal_strength(struct dvb_frontend *fe, u16 *strength)
-{
- struct tda10071_dev *dev = fe->demodulator_priv;
- struct i2c_client *client = dev->client;
- struct tda10071_cmd cmd;
- int ret;
- unsigned int uitmp;
+ switch (dev->delivery_system) {
+ case SYS_DVBS:
+ reg = 0x4c;
+ len = 8;
+ delivery_system = 1;
+ break;
+ case SYS_DVBS2:
+ reg = 0x4d;
+ len = 4;
+ delivery_system = 0;
+ break;
+ default:
+ ret = -EINVAL;
+ goto error;
+ }
- if (!dev->warm || !(dev->fe_status & FE_HAS_LOCK)) {
- *strength = 0;
- ret = 0;
- goto error;
- }
+ ret = regmap_read(dev->regmap, reg, &uitmp);
+ if (ret)
+ goto error;
- cmd.args[0] = CMD_GET_AGCACC;
- cmd.args[1] = 0;
- cmd.len = 2;
- ret = tda10071_cmd_execute(dev, &cmd);
- if (ret)
- goto error;
+ if (dev->meas_count == uitmp) {
+ dev_dbg(&client->dev, "meas not ready=%02x\n", uitmp);
+ ret = 0;
+ goto error;
+ } else {
+ dev->meas_count = uitmp;
+ }
- /* input power estimate dBm */
- ret = regmap_read(dev->regmap, 0x50, &uitmp);
- if (ret)
- goto error;
+ cmd.args[0] = CMD_BER_UPDATE_COUNTERS;
+ cmd.args[1] = 0;
+ cmd.args[2] = delivery_system;
+ cmd.len = 3;
+ ret = tda10071_cmd_execute(dev, &cmd);
+ if (ret)
+ goto error;
- if (uitmp < 181)
- uitmp = 181; /* -75 dBm */
- else if (uitmp > 236)
- uitmp = 236; /* -20 dBm */
+ ret = regmap_bulk_read(dev->regmap, cmd.len, buf, len);
+ if (ret)
+ goto error;
- /* scale value to 0x0000-0xffff */
- *strength = (uitmp-181) * 0xffff / (236-181);
+ if (dev->delivery_system == SYS_DVBS) {
+ dev->dvbv3_ber = buf[0] << 24 | buf[1] << 16 |
+ buf[2] << 8 | buf[3] << 0;
+ dev->post_bit_error += buf[0] << 24 | buf[1] << 16 |
+ buf[2] << 8 | buf[3] << 0;
+ c->post_bit_error.stat[0].scale = FE_SCALE_COUNTER;
+ c->post_bit_error.stat[0].uvalue = dev->post_bit_error;
+ dev->block_error += buf[4] << 8 | buf[5] << 0;
+ c->block_error.stat[0].scale = FE_SCALE_COUNTER;
+ c->block_error.stat[0].uvalue = dev->block_error;
+ } else {
+ dev->dvbv3_ber = buf[0] << 8 | buf[1] << 0;
+ dev->post_bit_error += buf[0] << 8 | buf[1] << 0;
+ c->post_bit_error.stat[0].scale = FE_SCALE_COUNTER;
+ c->post_bit_error.stat[0].uvalue = dev->post_bit_error;
+ c->block_error.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
+ }
+ } else {
+ c->post_bit_error.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
+ c->block_error.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
+ }
return ret;
error:
@@ -473,94 +510,50 @@ error:
return ret;
}
-static int tda10071_read_ber(struct dvb_frontend *fe, u32 *ber)
+static int tda10071_read_snr(struct dvb_frontend *fe, u16 *snr)
{
- struct tda10071_dev *dev = fe->demodulator_priv;
- struct i2c_client *client = dev->client;
- struct tda10071_cmd cmd;
- int ret, i, len;
- unsigned int uitmp;
- u8 reg, buf[8];
-
- if (!dev->warm || !(dev->fe_status & FE_HAS_LOCK)) {
- *ber = dev->ber = 0;
- ret = 0;
- goto error;
- }
+ struct dtv_frontend_properties *c = &fe->dtv_property_cache;
- switch (dev->delivery_system) {
- case SYS_DVBS:
- reg = 0x4c;
- len = 8;
- i = 1;
- break;
- case SYS_DVBS2:
- reg = 0x4d;
- len = 4;
- i = 0;
- break;
- default:
- *ber = dev->ber = 0;
- return 0;
- }
+ if (c->cnr.stat[0].scale == FE_SCALE_DECIBEL)
+ *snr = div_s64(c->cnr.stat[0].svalue, 100);
+ else
+ *snr = 0;
+ return 0;
+}
- ret = regmap_read(dev->regmap, reg, &uitmp);
- if (ret)
- goto error;
+static int tda10071_read_signal_strength(struct dvb_frontend *fe, u16 *strength)
+{
+ struct dtv_frontend_properties *c = &fe->dtv_property_cache;
+ unsigned int uitmp;
- if (dev->meas_count[i] == uitmp) {
- dev_dbg(&client->dev, "meas not ready=%02x\n", uitmp);
- *ber = dev->ber;
- return 0;
+ if (c->strength.stat[0].scale == FE_SCALE_DECIBEL) {
+ uitmp = c->strength.stat[0].svalue / 1000 + 256;
+ uitmp = clamp(uitmp, 181U, 236U); /* -75dBm - -20dBm */
+ /* scale value to 0x0000-0xffff */
+ *strength = (uitmp-181) * 0xffff / (236-181);
} else {
- dev->meas_count[i] = uitmp;
+ *strength = 0;
}
+ return 0;
+}
- cmd.args[0] = CMD_BER_UPDATE_COUNTERS;
- cmd.args[1] = 0;
- cmd.args[2] = i;
- cmd.len = 3;
- ret = tda10071_cmd_execute(dev, &cmd);
- if (ret)
- goto error;
-
- ret = regmap_bulk_read(dev->regmap, cmd.len, buf, len);
- if (ret)
- goto error;
-
- if (dev->delivery_system == SYS_DVBS) {
- *ber = (buf[0] << 24) | (buf[1] << 16) | (buf[2] << 8) | buf[3];
- dev->ucb += (buf[4] << 8) | buf[5];
- } else {
- *ber = (buf[0] << 8) | buf[1];
- }
- dev->ber = *ber;
+static int tda10071_read_ber(struct dvb_frontend *fe, u32 *ber)
+{
+ struct tda10071_dev *dev = fe->demodulator_priv;
- return ret;
-error:
- dev_dbg(&client->dev, "failed=%d\n", ret);
- return ret;
+ *ber = dev->dvbv3_ber;
+ return 0;
}
static int tda10071_read_ucblocks(struct dvb_frontend *fe, u32 *ucblocks)
{
- struct tda10071_dev *dev = fe->demodulator_priv;
- struct i2c_client *client = dev->client;
- int ret = 0;
+ struct dtv_frontend_properties *c = &fe->dtv_property_cache;
- if (!dev->warm || !(dev->fe_status & FE_HAS_LOCK)) {
+ if (c->block_error.stat[0].scale == FE_SCALE_COUNTER)
+ *ucblocks = c->block_error.stat[0].uvalue;
+ else
*ucblocks = 0;
- goto error;
- }
-
- /* UCB is updated when BER is read. Assume BER is read anyway. */
-
- *ucblocks = dev->ucb;
-
- return ret;
-error:
- dev_dbg(&client->dev, "failed=%d\n", ret);
- return ret;
+ return 0;
}
static int tda10071_set_frontend(struct dvb_frontend *fe)
@@ -770,6 +763,7 @@ static int tda10071_init(struct dvb_frontend *fe)
{
struct tda10071_dev *dev = fe->demodulator_priv;
struct i2c_client *client = dev->client;
+ struct dtv_frontend_properties *c = &fe->dtv_property_cache;
struct tda10071_cmd cmd;
int ret, i, len, remaining, fw_size;
unsigned int uitmp;
@@ -1035,6 +1029,16 @@ static int tda10071_init(struct dvb_frontend *fe)
goto error;
}
+ /* init stats here in order signal app which stats are supported */
+ c->strength.len = 1;
+ c->strength.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
+ c->cnr.len = 1;
+ c->cnr.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
+ c->post_bit_error.len = 1;
+ c->post_bit_error.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
+ c->block_error.len = 1;
+ c->block_error.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
+
return ret;
error_release_firmware:
release_firmware(fw);
diff --git a/drivers/media/dvb-frontends/tda10071_priv.h b/drivers/media/dvb-frontends/tda10071_priv.h
index cf5b43337136..b9c3601802ba 100644
--- a/drivers/media/dvb-frontends/tda10071_priv.h
+++ b/drivers/media/dvb-frontends/tda10071_priv.h
@@ -38,12 +38,13 @@ struct tda10071_dev {
u8 pll_multiplier;
u8 tuner_i2c_addr;
- u8 meas_count[2];
- u32 ber;
- u32 ucb;
+ u8 meas_count;
+ u32 dvbv3_ber;
enum fe_status fe_status;
enum fe_delivery_system delivery_system;
bool warm; /* FW running */
+ u64 post_bit_error;
+ u64 block_error;
};
static struct tda10071_modcod {

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