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| author | Michael Krufky <mkrufky@linuxtv.org> | 2009-03-05 01:42:06 +0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2009-03-30 19:43:11 +0400 |
| commit | adcc4b3e75c5f0293806766bcc5ed0bb62d5cda0 (patch) | |
| tree | c13980e43addd1dacead20ae0c35a858fe5afbfe /drivers/media/common/tuners/tda18271-fe.c | |
| parent | 3160fbc556aa2e60404fa4da35b3e13dd741a5a2 (diff) | |
| download | linux-adcc4b3e75c5f0293806766bcc5ed0bb62d5cda0.tar.xz | |
V4L/DVB (10876): tda18271: add support for AGC configuration via tuner callback
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.
Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media/common/tuners/tda18271-fe.c')
| -rw-r--r-- | drivers/media/common/tuners/tda18271-fe.c | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/drivers/media/common/tuners/tda18271-fe.c b/drivers/media/common/tuners/tda18271-fe.c index 1b48b5d0bf1e..b10935630154 100644 --- a/drivers/media/common/tuners/tda18271-fe.c +++ b/drivers/media/common/tuners/tda18271-fe.c @@ -818,6 +818,38 @@ 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) { @@ -827,6 +859,10 @@ 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; @@ -1159,6 +1195,7 @@ 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); |