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authorMichael Krufky <mkrufky@linuxtv.org>2009-03-04 19:42:06 -0300
committerMauro Carvalho Chehab <mchehab@redhat.com>2009-03-30 12:43:11 -0300
commitadcc4b3e75c5f0293806766bcc5ed0bb62d5cda0 (patch)
treec13980e43addd1dacead20ae0c35a858fe5afbfe
parent3160fbc556aa2e60404fa4da35b3e13dd741a5a2 (diff)
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>
-rw-r--r--drivers/media/common/tuners/tda18271-fe.c37
-rw-r--r--drivers/media/common/tuners/tda18271-priv.h6
-rw-r--r--drivers/media/common/tuners/tda18271.h10
-rw-r--r--drivers/media/common/tuners/tda8290.c1
4 files changed, 49 insertions, 5 deletions
diff --git a/drivers/media/common/tuners/tda18271-fe.c b/drivers/media/common/tuners/tda18271-fe.c
index 1b48b5d0bf1..b1093563015 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);
diff --git a/drivers/media/common/tuners/tda18271-priv.h b/drivers/media/common/tuners/tda18271-priv.h
index 81a739365f8..74beb28806f 100644
--- a/drivers/media/common/tuners/tda18271-priv.h
+++ b/drivers/media/common/tuners/tda18271-priv.h
@@ -91,11 +91,6 @@ enum tda18271_pll {
TDA18271_CAL_PLL,
};
-enum tda18271_mode {
- TDA18271_ANALOG,
- TDA18271_DIGITAL,
-};
-
struct tda18271_map_layout;
enum tda18271_ver {
@@ -114,6 +109,7 @@ struct tda18271_priv {
enum tda18271_i2c_gate gate;
enum tda18271_ver id;
+ unsigned int config; /* interface to saa713x / tda829x */
unsigned int tm_rfcal;
unsigned int cal_initialized:1;
unsigned int small_i2c:1;
diff --git a/drivers/media/common/tuners/tda18271.h b/drivers/media/common/tuners/tda18271.h
index 7db9831c0cb..53a9892a18d 100644
--- a/drivers/media/common/tuners/tda18271.h
+++ b/drivers/media/common/tuners/tda18271.h
@@ -79,6 +79,16 @@ struct tda18271_config {
/* some i2c providers cant write all 39 registers at once */
unsigned int small_i2c:1;
+
+ /* interface to saa713x / tda829x */
+ unsigned int config;
+};
+
+#define TDA18271_CALLBACK_CMD_AGC_ENABLE 0
+
+enum tda18271_mode {
+ TDA18271_ANALOG = 0,
+ TDA18271_DIGITAL,
};
#if defined(CONFIG_MEDIA_TUNER_TDA18271) || (defined(CONFIG_MEDIA_TUNER_TDA18271_MODULE) && defined(MODULE))
diff --git a/drivers/media/common/tuners/tda8290.c b/drivers/media/common/tuners/tda8290.c
index a88e67632c5..064d14c8d7b 100644
--- a/drivers/media/common/tuners/tda8290.c
+++ b/drivers/media/common/tuners/tda8290.c
@@ -624,6 +624,7 @@ static int tda829x_find_tuner(struct dvb_frontend *fe)
if ((data == 0x83) || (data == 0x84)) {
priv->ver |= TDA18271;
+ tda829x_tda18271_config.config = priv->cfg.config;
dvb_attach(tda18271_attach, fe, priv->tda827x_addr,
priv->i2c_props.adap, &tda829x_tda18271_config);
} else {