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);