From: Antti Seppälä Date: Mon, 1 Dec 2008 09:59:37 +0000 (-0300) Subject: V4L/DVB (9781): [PATCH] Cablestar 2 I2C retries (fix CableStar2 support) X-Git-Tag: v2.6.28~1^2~5 X-Git-Url: http://pilppa.com/gitweb/?a=commitdiff_plain;h=11c6c7fb89a7526841eb4f294de631f3b8a31f10;p=linux-2.6-omap-h63xx.git V4L/DVB (9781): [PATCH] Cablestar 2 I2C retries (fix CableStar2 support) At some point the Flexcop driver was changed to support newer Flexcop cards. These modifications however broke the detection of Cablestar 2 DVB-C cards. The reason is that the earlier version of the driver used to retry unsuccessful i2c operations. The demodulator of Cablestar 2 cards (stv0297) seems to be very dependent on these retries and adding them back fixes Cablestar detection. This patch restores this behaviour for the CableStar2. Signed-off-by: Antti Seppälä Signed-off-by: Patrick Boettcher Signed-off-by: Mauro Carvalho Chehab --- diff --git a/drivers/media/dvb/b2c2/flexcop-fe-tuner.c b/drivers/media/dvb/b2c2/flexcop-fe-tuner.c index a127a4175c4..5cded370854 100644 --- a/drivers/media/dvb/b2c2/flexcop-fe-tuner.c +++ b/drivers/media/dvb/b2c2/flexcop-fe-tuner.c @@ -628,12 +628,14 @@ int flexcop_frontend_init(struct flexcop_device *fc) } /* try the cable dvb (stv0297) */ + fc->fc_i2c_adap[0].no_base_addr = 1; fc->fe = dvb_attach(stv0297_attach, &alps_tdee4_stv0297_config, i2c); if (fc->fe != NULL) { fc->dev_type = FC_CABLE; fc->fe->ops.tuner_ops.set_params = alps_tdee4_stv0297_tuner_set_params; goto fe_found; } + fc->fc_i2c_adap[0].no_base_addr = 0; /* try the sky v2.3 (vp310/Samsung tbdu18132(tsa5059)) */ fc->fe = dvb_attach(mt312_attach, diff --git a/drivers/media/dvb/b2c2/flexcop-i2c.c b/drivers/media/dvb/b2c2/flexcop-i2c.c index 43a112ec6d4..f13783f08f0 100644 --- a/drivers/media/dvb/b2c2/flexcop-i2c.c +++ b/drivers/media/dvb/b2c2/flexcop-i2c.c @@ -47,8 +47,12 @@ static int flexcop_i2c_read4(struct flexcop_i2c_adapter *i2c, int len = r100.tw_sm_c_100.total_bytes, /* remember total_bytes is buflen-1 */ ret; - r100.tw_sm_c_100.no_base_addr_ack_error = i2c->no_base_addr; ret = flexcop_i2c_operation(i2c->fc, &r100); + if (ret != 0) { + deb_i2c("Retrying operation\n"); + r100.tw_sm_c_100.no_base_addr_ack_error = i2c->no_base_addr; + ret = flexcop_i2c_operation(i2c->fc, &r100); + } if (ret != 0) { deb_i2c("read failed. %d\n", ret); return ret;