V4L/DVB (10972): zl10353: i2c_gate_ctrl bug fix

zl10353 i2c-gate was always closed and due to that devices having tuner
behind i2c-gate were broken. Add module configuration which allows disabling
i2c-gate only when really needed.
Signed-off-by: NAntti Palosaari <crope@iki.fi>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

drivers/media/dvb/frontends/zl10353.c

@@ -590,7 +590,7 @@ static int zl10353_i2c_gate_ctrl(struct dvb_frontend* fe, int enable)
 	struct zl10353_state *state = fe->demodulator_priv;
 	u8 val = 0x0a;
 
-	if (state->config.no_tuner) {
+	if (state->config.disable_i2c_gate_ctrl) {
 		/* No tuner attached to the internal I2C bus */
 		/* If set enable I2C bridge, the main I2C bus stopped hardly */
 		return 0;

drivers/media/dvb/frontends/zl10353.h

@@ -38,6 +38,9 @@ struct zl10353_config
 
 	/* set if parallel ts output is required */
 	int parallel_ts;
+
+	/* set if i2c_gate_ctrl disable is required */
+	u8 disable_i2c_gate_ctrl:1;
 };
 
 #if defined(CONFIG_DVB_ZL10353) || (defined(CONFIG_DVB_ZL10353_MODULE) && defined(MODULE))

drivers/media/video/saa7134/saa7134-dvb.c

@@ -860,6 +860,7 @@ static struct zl10353_config behold_h6_config = {
 	.demod_address = 0x1e>>1,
 	.no_tuner      = 1,
 	.parallel_ts   = 1,
+	.disable_i2c_gate_ctrl = 1,
 };
 
 /* ==================================================================