From c52344fdc49665a4eeef24236750b49637d6982f Mon Sep 17 00:00:00 2001 From: Olivier DANET Date: Fri, 25 Jan 2008 06:50:07 -0300 Subject: [PATCH] V4L/DVB (7072): sets the MT2060 IF1 frequency according to EEPROM Here is a patch for Hauppage Nova-T-Stick and Nova-T-500 users. It sets the MT2060 IF1 frequency according to the calibration values stored in the EEPROM. It is supposed to enhance the signal quality, but, hey, there is no guarantee. Feedbacks would be much appreciated, to know whether it deserves being applied. Signed-off-by: Olivier DANET Signed-off-by: Patrick Boettcher Signed-off-by: Mauro Carvalho Chehab --- drivers/media/dvb/dvb-usb/dib0700_devices.c | 32 +++++++++++++++++---- 1 file changed, 27 insertions(+), 5 deletions(-) diff --git a/drivers/media/dvb/dvb-usb/dib0700_devices.c b/drivers/media/dvb/dvb-usb/dib0700_devices.c index 36d29f9d2f..ffecb6ed81 100644 --- a/drivers/media/dvb/dvb-usb/dib0700_devices.c +++ b/drivers/media/dvb/dvb-usb/dib0700_devices.c @@ -94,12 +94,28 @@ static int bristol_frontend_attach(struct dvb_usb_adapter *adap) (10 + adap->id) << 1, &bristol_dib3000mc_config[adap->id])) == NULL ? -ENODEV : 0; } +int eeprom_read(struct i2c_adapter *adap,u8 adrs,u8 *pval) +{ + struct i2c_msg msg[2] = { + { .addr = 0x50, .flags = 0, .buf = &adrs, .len = 1 }, + { .addr = 0x50, .flags = I2C_M_RD, .buf = pval, .len = 1 }, + }; + if (i2c_transfer(adap, msg, 2) != 2) return -EREMOTEIO; + return 0; +} + static int bristol_tuner_attach(struct dvb_usb_adapter *adap) { - struct dib0700_state *st = adap->dev->priv; + struct i2c_adapter *prim_i2c = &adap->dev->i2c_adap; struct i2c_adapter *tun_i2c = dib3000mc_get_tuner_i2c_master(adap->fe, 1); - return dvb_attach(mt2060_attach,adap->fe, tun_i2c, &bristol_mt2060_config[adap->id], - st->mt2060_if1[adap->id]) == NULL ? -ENODEV : 0; + s8 a; + int if1=1220; + if (adap->dev->udev->descriptor.idVendor == USB_VID_HAUPPAUGE && + adap->dev->udev->descriptor.idProduct == USB_PID_HAUPPAUGE_NOVA_T_500_2) { + if (!eeprom_read(prim_i2c,0x59 + adap->id,&a)) if1=1220+a; + } + return dvb_attach(mt2060_attach,adap->fe, tun_i2c,&bristol_mt2060_config[adap->id], + if1) == NULL ? -ENODEV : 0; } /* STK7700D: Pinnacle/Terratec/Hauppauge Dual DVB-T Diversity */ @@ -628,16 +644,22 @@ static struct mt2060_config stk7700p_mt2060_config = { static int stk7700p_tuner_attach(struct dvb_usb_adapter *adap) { + struct i2c_adapter *prim_i2c = &adap->dev->i2c_adap; struct dib0700_state *st = adap->dev->priv; struct i2c_adapter *tun_i2c; - + s8 a; + int if1=1220; + if (adap->dev->udev->descriptor.idVendor == USB_VID_HAUPPAUGE && + adap->dev->udev->descriptor.idProduct == USB_PID_HAUPPAUGE_NOVA_T_STICK) { + if (!eeprom_read(prim_i2c,0x58,&a)) if1=1220+a; + } if (st->is_dib7000pc) tun_i2c = dib7000p_get_i2c_master(adap->fe, DIBX000_I2C_INTERFACE_TUNER, 1); else tun_i2c = dib7000m_get_i2c_master(adap->fe, DIBX000_I2C_INTERFACE_TUNER, 1); return dvb_attach(mt2060_attach, adap->fe, tun_i2c, &stk7700p_mt2060_config, - st->mt2060_if1[0]) == NULL ? -ENODEV : 0; + if1) == NULL ? -ENODEV : 0; } /* DIB7070 generic */ -- 2.39.5