diff options
| author | Mauro Carvalho Chehab <mchehab@osg.samsung.com> | 2016-05-04 18:25:38 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@osg.samsung.com> | 2016-06-07 12:13:50 -0300 |
| commit | 76344a3fc54d04aaf71763a1428245c9e1d9a4ac (patch) | |
| tree | 88ec37406ebdfd5fc8a3a50cb0b5714190e20221 /drivers/media/dvb-frontends/cxd2841er.c | |
| parent | 4da093ce4e8bd36223763c900f623ce36a0d51c3 (diff) | |
[media] ISDB-T retune and offset fix and DVB-C bw fix
now when new tuning parameters specified demod should retune.
Also ISDB-T frequency offset calculation added
(cxd2841er_get_carrier_offset_i).
While here, fix re-tune for DVB-C Annex A, using the desired
bandwidth, instead of using 8MHz.
Signed-off-by: Abylay Ospan <aospan@netup.ru>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Diffstat (limited to 'drivers/media/dvb-frontends/cxd2841er.c')
| -rw-r--r-- | drivers/media/dvb-frontends/cxd2841er.c | 66 |
1 files changed, 65 insertions, 1 deletions
diff --git a/drivers/media/dvb-frontends/cxd2841er.c b/drivers/media/dvb-frontends/cxd2841er.c index 609187d52d7a..45bc43886738 100644 --- a/drivers/media/dvb-frontends/cxd2841er.c +++ b/drivers/media/dvb-frontends/cxd2841er.c @@ -433,6 +433,15 @@ static int cxd2841er_sleep_tc_to_active_t2_band(struct cxd2841er_priv *priv, static int cxd2841er_sleep_tc_to_active_c_band(struct cxd2841er_priv *priv, u32 bandwidth); +static int cxd2841er_sleep_tc_to_active_i(struct cxd2841er_priv *priv, + u32 bandwidth); + +static int cxd2841er_active_i_to_sleep_tc(struct cxd2841er_priv *priv); + +static int cxd2841er_sleep_tc_to_shutdown(struct cxd2841er_priv *priv); + +static int cxd2841er_shutdown_to_sleep_tc(struct cxd2841er_priv *priv); + static int cxd2841er_retune_active(struct cxd2841er_priv *priv, struct dtv_frontend_properties *p) { @@ -460,7 +469,13 @@ static int cxd2841er_retune_active(struct cxd2841er_priv *priv, priv, p->bandwidth_hz); case SYS_DVBC_ANNEX_A: return cxd2841er_sleep_tc_to_active_c_band( - priv, 8000000); + priv, p->bandwidth_hz); + case SYS_ISDBT: + cxd2841er_active_i_to_sleep_tc(priv); + cxd2841er_sleep_tc_to_shutdown(priv); + cxd2841er_shutdown_to_sleep_tc(priv); + return cxd2841er_sleep_tc_to_active_i( + priv, p->bandwidth_hz); } } dev_dbg(&priv->i2c->dev, "%s(): invalid delivery system %d\n", @@ -1095,6 +1110,50 @@ static int cxd2841er_get_carrier_offset_s_s2(struct cxd2841er_priv *priv, return 0; } +static int cxd2841er_get_carrier_offset_i(struct cxd2841er_priv *priv, + u32 bandwidth, int *offset) +{ + u8 data[4]; + + dev_dbg(&priv->i2c->dev, "%s()\n", __func__); + if (priv->state != STATE_ACTIVE_TC) { + dev_dbg(&priv->i2c->dev, "%s(): invalid state %d\n", + __func__, priv->state); + return -EINVAL; + } + if (priv->system != SYS_ISDBT) { + dev_dbg(&priv->i2c->dev, "%s(): invalid delivery system %d\n", + __func__, priv->system); + return -EINVAL; + } + cxd2841er_write_reg(priv, I2C_SLVT, 0x00, 0x60); + cxd2841er_read_regs(priv, I2C_SLVT, 0x4c, data, sizeof(data)); + *offset = -1 * sign_extend32( + ((u32)(data[0] & 0x1F) << 24) | ((u32)data[1] << 16) | + ((u32)data[2] << 8) | (u32)data[3], 29); + + switch (bandwidth) { + case 6000000: + *offset = -1 * ((*offset) * 8/264); + break; + case 7000000: + *offset = -1 * ((*offset) * 8/231); + break; + case 8000000: + *offset = -1 * ((*offset) * 8/198); + break; + default: + dev_dbg(&priv->i2c->dev, "%s(): invalid bandwidth %d\n", + __func__, bandwidth); + return -EINVAL; + } + + dev_dbg(&priv->i2c->dev, "%s(): bandwidth %d offset %d\n", + __func__, bandwidth, *offset); + + return 0; +} + static int cxd2841er_get_carrier_offset_t(struct cxd2841er_priv *priv, u32 bandwidth, int *offset) { @@ -2941,6 +3000,11 @@ static int cxd2841er_tune_tc(struct dvb_frontend *fe, cxd2841er_read_status_tc(fe, status); if (*status & FE_HAS_LOCK) { switch (priv->system) { + case SYS_ISDBT: + ret = cxd2841er_get_carrier_offset_i( + priv, p->bandwidth_hz, + &carrier_offset); + break; case SYS_DVBT: ret = cxd2841er_get_carrier_offset_t( priv, p->bandwidth_hz, |