Terry, The linux-media list is the appropriate place for posting patches (I've Cc:'ed the list). v4l-dvb-maintainer is inactive as far as I know. Guidelines for posting patches can be found here: http://www.linuxtv.org/wiki/index.php/Development:_How_to_submit_patches Regards, Andy On Wed, 2009-05-27 at 19:50 +0800, Terry Wu wrote: > Hi, > > Here is the modified > v4l-dvb/linux/drivers/media/common/tuners/tuner-xc2028.c > for Taiwan DVB-T (BANDWIDTH_6_MHZ) : > http://tw1965.myweb.hinet.net/ > http://tw1965.myweb.hinet.net/Linux/v4l-dvb/tuners/tuner-xc2028.c > static int xc2028_set_params(struct dvb_frontend *fe, > struct dvb_frontend_parameters *p) > { > struct xc2028_data *priv = fe->tuner_priv; > unsigned int type=0; > fe_bandwidth_t bw = BANDWIDTH_8_MHZ; > u16 demod = 0; > > tuner_dbg("%s called\n", __func__); > > switch(fe->ops.info.type) { > case FE_OFDM: > bw = p->u.ofdm.bandwidth; > > if (bw == BANDWIDTH_6_MHZ) /* Terry Wu added for Taiwan DVB-T 6MHz bandwidth > */ > { > type |= (DTV6 | QAM | D2633); > priv->ctrl.type = XC2028_D2633; > } > > break; > case FE_QAM: > tuner_info("WARN: There are some reports that " > "QAM 6 MHz doesn't work.\n" > "If this works for you, please report by " > "e-mail to: v4l-dvb-maintainer@xxxxxxxxxxx\n"); > bw = BANDWIDTH_6_MHZ; > type |= QAM; > break; > ... > static int generic_set_freq(struct dvb_frontend *fe, u32 freq /* in HZ */, > enum tuner_mode new_mode, > unsigned int type, > v4l2_std_id std, > u16 int_freq) > { > struct xc2028_data *priv = fe->tuner_priv; > int rc = -EINVAL; > unsigned char buf[4]; > u32 div, offset = 0; > > tuner_dbg("%s called\n", __func__); > > mutex_lock(&priv->lock); > > tuner_dbg("should set frequency %d kHz\n", freq / 1000); > > if (check_firmware(fe, type, std, int_freq) < 0) > goto ret; > > /* On some cases xc2028 can disable video output, if > * very weak signals are received. By sending a soft > * reset, this is re-enabled. So, it is better to always > * send a soft reset before changing channels, to be sure > * that xc2028 will be in a safe state. > * Maybe this might also be needed for DTV. > */ > if (new_mode == T_ANALOG_TV) { > rc = send_seq(priv, {0x00, 0x00}); > } else if (priv->cur_fw.type & ATSC) { > offset = 1750000; > } else if (priv->cur_fw.type & DTV6) { /* Terry Wu added for Taiwan DVB-T > 6MHz bandwidth */ > offset = 1750000; /* Terry Wu added for Taiwan DVB-T 6MHz bandwidth */ > } else { > offset = 2750000; > /* > * We must adjust the offset by 500kHz in two cases in order > * to correctly center the IF output: > * 1) When the ZARLINK456 or DIBCOM52 tables were explicitly > * selected and a 7MHz channel is tuned; > * 2) When tuning a VHF channel with DTV78 firmware. > */ > if (((priv->cur_fw.type & DTV7) && > (priv->cur_fw.scode_table & (ZARLINK456 | DIBCOM52))) || > ((priv->cur_fw.type & DTV78) && freq < 470000000)) > offset -= 500000; > } > > div = (freq - offset + DIV / 2) / DIV; > > > Terry -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
