diff options
Diffstat (limited to 'drivers/media/dvb-frontends/si2168.c')
| -rw-r--r-- | drivers/media/dvb-frontends/si2168.c | 70 |
1 files changed, 68 insertions, 2 deletions
diff --git a/drivers/media/dvb-frontends/si2168.c b/drivers/media/dvb-frontends/si2168.c index 20b4a659e2e4..680ba06c29fb 100644 --- a/drivers/media/dvb-frontends/si2168.c +++ b/drivers/media/dvb-frontends/si2168.c @@ -85,7 +85,8 @@ static int si2168_read_status(struct dvb_frontend *fe, enum fe_status *status) struct i2c_client *client = fe->demodulator_priv; struct si2168_dev *dev = i2c_get_clientdata(client); struct dtv_frontend_properties *c = &fe->dtv_property_cache; - int ret; + int ret, i; + unsigned int utmp, utmp1, utmp2; struct si2168_cmd cmd; *status = 0; @@ -144,6 +145,61 @@ static int si2168_read_status(struct dvb_frontend *fe, enum fe_status *status) dev_dbg(&client->dev, "status=%02x args=%*ph\n", *status, cmd.rlen, cmd.args); + /* BER */ + if (*status & FE_HAS_VITERBI) { + memcpy(cmd.args, "\x82\x00", 2); + cmd.wlen = 2; + cmd.rlen = 3; + ret = si2168_cmd_execute(client, &cmd); + if (ret) + goto err; + + /* + * Firmware returns [0, 255] mantissa and [0, 8] exponent. + * Convert to DVB API: mantissa * 10^(8 - exponent) / 10^8 + */ + utmp = clamp(8 - cmd.args[1], 0, 8); + for (i = 0, utmp1 = 1; i < utmp; i++) + utmp1 = utmp1 * 10; + + utmp1 = cmd.args[2] * utmp1; + utmp2 = 100000000; /* 10^8 */ + + dev_dbg(&client->dev, + "post_bit_error=%u post_bit_count=%u ber=%u*10^-%u\n", + utmp1, utmp2, cmd.args[2], cmd.args[1]); + + c->post_bit_error.stat[0].scale = FE_SCALE_COUNTER; + c->post_bit_error.stat[0].uvalue += utmp1; + c->post_bit_count.stat[0].scale = FE_SCALE_COUNTER; + c->post_bit_count.stat[0].uvalue += utmp2; + } else { + c->post_bit_error.stat[0].scale = FE_SCALE_NOT_AVAILABLE; + c->post_bit_count.stat[0].scale = FE_SCALE_NOT_AVAILABLE; + } + + /* UCB */ + if (*status & FE_HAS_SYNC) { + memcpy(cmd.args, "\x84\x01", 2); + cmd.wlen = 2; + cmd.rlen = 3; + ret = si2168_cmd_execute(client, &cmd); + if (ret) + goto err; + + utmp1 = cmd.args[2] << 8 | cmd.args[1] << 0; + dev_dbg(&client->dev, "block_error=%u\n", utmp1); + + /* Sometimes firmware returns bogus value */ + if (utmp1 == 0xffff) + utmp1 = 0; + + c->block_error.stat[0].scale = FE_SCALE_COUNTER; + c->block_error.stat[0].uvalue += utmp1; + } else { + c->block_error.stat[0].scale = FE_SCALE_NOT_AVAILABLE; + } + return 0; err: dev_dbg(&client->dev, "failed=%d\n", ret); @@ -355,6 +411,7 @@ static int si2168_init(struct dvb_frontend *fe) { struct i2c_client *client = fe->demodulator_priv; struct si2168_dev *dev = i2c_get_clientdata(client); + struct dtv_frontend_properties *c = &fe->dtv_property_cache; int ret, len, remaining; const struct firmware *fw; struct si2168_cmd cmd; @@ -493,10 +550,19 @@ static int si2168_init(struct dvb_frontend *fe) dev->warm = true; warm: + /* Init stats here to indicate which stats are supported */ + 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->post_bit_count.len = 1; + c->post_bit_count.stat[0].scale = FE_SCALE_NOT_AVAILABLE; + c->block_error.len = 1; + c->block_error.stat[0].scale = FE_SCALE_NOT_AVAILABLE; + dev->active = true; return 0; - err_release_firmware: release_firmware(fw); err: |