Allow disabling I2C gate handling by external configuration.
This is required by cards that have all devices on a single I2C bus,
like AverMedia A706.
Signed-off-by: Ondrej Zary <linux@xxxxxxxxxxxxxxxxxxxx>
---
drivers/media/tuners/tda8290.c | 13 +++++++++++--
drivers/media/tuners/tda8290.h | 1 +
2 files changed, 12 insertions(+), 2 deletions(-)
diff --git a/drivers/media/tuners/tda8290.c b/drivers/media/tuners/tda8290.c
index 8c48521..16dfbf2 100644
--- a/drivers/media/tuners/tda8290.c
+++ b/drivers/media/tuners/tda8290.c
@@ -54,6 +54,7 @@ struct tda8290_priv {
#define TDA18271 16
struct tda827x_config cfg;
+ bool no_i2c_gate;
};
/*---------------------------------------------------------------------*/
@@ -66,6 +67,9 @@ static int tda8290_i2c_bridge(struct dvb_frontend *fe, int close)
unsigned char disable[2] = { 0x21, 0x00 };
unsigned char *msg;
+ if (priv->no_i2c_gate)
+ return 0;
+
if (close) {
msg = enable;
tuner_i2c_xfer_send(&priv->i2c_props, msg, 2);
@@ -88,6 +92,9 @@ static int tda8295_i2c_bridge(struct dvb_frontend *fe, int close)
unsigned char buf[3] = { 0x45, 0x01, 0x00 };
unsigned char *msg;
+ if (priv->no_i2c_gate)
+ return 0;
+
if (close) {
msg = enable;
tuner_i2c_xfer_send(&priv->i2c_props, msg, 2);
@@ -740,8 +747,10 @@ struct dvb_frontend *tda829x_attach(struct dvb_frontend *fe,
priv->i2c_props.addr = i2c_addr;
priv->i2c_props.adap = i2c_adap;
priv->i2c_props.name = "tda829x";
- if (cfg)
- priv->cfg.config = cfg->lna_cfg;
+ if (cfg) {
+ priv->cfg.config = cfg->lna_cfg;
+ priv->no_i2c_gate = cfg->no_i2c_gate;
+ }
if (tda8290_probe(&priv->i2c_props) == 0) {
priv->ver = TDA8290;
diff --git a/drivers/media/tuners/tda8290.h b/drivers/media/tuners/tda8290.h
index 7e288b2..9959cc8 100644
--- a/drivers/media/tuners/tda8290.h
+++ b/drivers/media/tuners/tda8290.h
@@ -26,6 +26,7 @@ struct tda829x_config {
unsigned int probe_tuner:1;
#define TDA829X_PROBE_TUNER 0
#define TDA829X_DONT_PROBE 1
+ unsigned int no_i2c_gate:1;
};
#if defined(CONFIG_MEDIA_TUNER_TDA8290) || (defined(CONFIG_MEDIA_TUNER_TDA8290_MODULE) && defined(MODULE))
--
Ondrej Zary
--
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