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| author | Michael Krufky <mkrufky@linuxtv.org> | 2009-03-04 17:42:06 -0500 |
|---|---|---|
| committer | Michael Krufky <mkrufky@linuxtv.org> | 2009-03-04 17:42:06 -0500 |
| commit | bf1357c00949c25ceaef64b2127f022a870491ca (patch) | |
| tree | 4ec2ddd4a25d360742cdf4ee5bec63345ca862eb /linux/drivers/media/common/tuners/tda18271-fe.c | |
| parent | fa9f1bcf738c7685a6c6ac771f75275cc86a5e85 (diff) | |
| download | mediapointer-dvb-s2-bf1357c00949c25ceaef64b2127f022a870491ca.tar.gz mediapointer-dvb-s2-bf1357c00949c25ceaef64b2127f022a870491ca.tar.bz2 | |
tda18271: add support for AGC configuration via tuner callback
From: Michael Krufky <mkrufky@linuxtv.org>
The tda827x driver supports a feature that the tda18271 driver was lacking
until now. This patch adds support for device-level configuration via the
tuner callback configuration interface.
Priority: normal
Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
Diffstat (limited to 'linux/drivers/media/common/tuners/tda18271-fe.c')
| -rw-r--r-- | linux/drivers/media/common/tuners/tda18271-fe.c | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/linux/drivers/media/common/tuners/tda18271-fe.c b/linux/drivers/media/common/tuners/tda18271-fe.c index 33bc96ea6..85e30af31 100644 --- a/linux/drivers/media/common/tuners/tda18271-fe.c +++ b/linux/drivers/media/common/tuners/tda18271-fe.c @@ -819,6 +819,38 @@ fail: return ret; } +/* ------------------------------------------------------------------ */ + +static int tda18271_agc(struct dvb_frontend *fe) +{ + struct tda18271_priv *priv = fe->tuner_priv; + int ret = 0; + + switch (priv->config) { + case 0: + /* no LNA */ + tda_dbg("no agc configuration provided\n"); + break; + case 3: + /* switch with GPIO of saa713x */ + tda_dbg("invoking callback\n"); + if (fe->callback) + ret = fe->callback(priv->i2c_props.adap->algo_data, + DVB_FRONTEND_COMPONENT_TUNER, + TDA18271_CALLBACK_CMD_AGC_ENABLE, + priv->mode); + break; + case 1: + case 2: + default: + /* n/a - currently not supported */ + tda_err("unsupported configuration: %d\n", priv->config); + ret = -EINVAL; + break; + } + return ret; +} + static int tda18271_tune(struct dvb_frontend *fe, struct tda18271_std_map_item *map, u32 freq, u32 bw) { @@ -828,6 +860,10 @@ static int tda18271_tune(struct dvb_frontend *fe, tda_dbg("freq = %d, ifc = %d, bw = %d, agc_mode = %d, std = %d\n", freq, map->if_freq, bw, map->agc_mode, map->std); + ret = tda18271_agc(fe); + if (tda_fail(ret)) + tda_warn("failed to configure agc\n"); + ret = tda18271_init(fe); if (tda_fail(ret)) goto fail; @@ -1160,6 +1196,7 @@ struct dvb_frontend *tda18271_attach(struct dvb_frontend *fe, u8 addr, /* new tuner instance */ priv->gate = (cfg) ? cfg->gate : TDA18271_GATE_AUTO; priv->role = (cfg) ? cfg->role : TDA18271_MASTER; + priv->config = (cfg) ? cfg->config : 0; priv->cal_initialized = false; mutex_init(&priv->lock); |