static int tda8295_i2c_bridge(struct dvb_frontend *fe, int close) { struct tda8290_priv *priv = fe->analog_demod_priv; unsigned char enable[2] = { 0x45, 0xc1 }; unsigned char disable[2] = { 0x46, 0x00 }; unsigned char buf[3] = { 0x45, 0x01, 0x00 }; unsigned char *msg; if (close) { msg = enable; tuner_i2c_xfer_send(&priv->i2c_props, msg, 2); /* let the bridge stabilize */ msleep(20); } else { msg = disable; tuner_i2c_xfer_send_recv(&priv->i2c_props, msg, 1, &msg[1], 1); buf[2] = msg[1]; buf[2] &= ~0x04; tuner_i2c_xfer_send(&priv->i2c_props, buf, 3); msleep(5); msg[1] |= 0x04; tuner_i2c_xfer_send(&priv->i2c_props, msg, 2); } return 0; }
static int tda8295_has_signal(struct dvb_frontend *fe) { struct tda8290_priv *priv = fe->analog_demod_priv; unsigned char hvpll_stat = 0x26; unsigned char ret; tuner_i2c_xfer_send_recv(&priv->i2c_props, &hvpll_stat, 1, &ret, 1); return (ret & 0x01) ? 65535 : 0; }
static void tda8295_agc2_out(struct dvb_frontend *fe, int enable) { struct tda8290_priv *priv = fe->analog_demod_priv; unsigned char set_gpio_cf[] = { 0x44, 0x00 }; unsigned char set_gpio_val[] = { 0x46, 0x00 }; tuner_i2c_xfer_send_recv(&priv->i2c_props, &set_gpio_cf[0], 1, &set_gpio_cf[1], 1); tuner_i2c_xfer_send_recv(&priv->i2c_props, &set_gpio_val[0], 1, &set_gpio_val[1], 1); set_gpio_cf[1] &= 0xf0; /* clear GPIO_0 bits 3-0 */ if (enable) { set_gpio_cf[1] |= 0x01; /* config GPIO_0 as Open Drain Out */ set_gpio_val[1] &= 0xfe; /* set GPIO_0 pin low */ } tuner_i2c_xfer_send(&priv->i2c_props, set_gpio_cf, 2); tuner_i2c_xfer_send(&priv->i2c_props, set_gpio_val, 2); }
static int tda8290_has_signal(struct dvb_frontend *fe) { struct tda8290_priv *priv = fe->analog_demod_priv; unsigned char i2c_get_afc[1] = { 0x1B }; unsigned char afc = 0; tuner_i2c_xfer_send_recv(&priv->i2c_props, i2c_get_afc, ARRAY_SIZE(i2c_get_afc), &afc, 1); return (afc & 0x80)? 65535:0; }
static void tda8295_agc1_out(struct dvb_frontend *fe, int enable) { struct tda8290_priv *priv = fe->analog_demod_priv; unsigned char buf[] = { 0x02, 0x00 }; /* DIV_FUNC */ tuner_i2c_xfer_send_recv(&priv->i2c_props, &buf[0], 1, &buf[1], 1); if (enable) buf[1] &= ~0x40; else buf[1] |= 0x40; tuner_i2c_xfer_send(&priv->i2c_props, buf, 2); }
static void tda8295_set_easy_mode(struct dvb_frontend *fe, int enable) { struct tda8290_priv *priv = fe->analog_demod_priv; unsigned char buf[] = { 0x01, 0x00 }; tuner_i2c_xfer_send_recv(&priv->i2c_props, &buf[0], 1, &buf[1], 1); if (enable) buf[1] = 0x01; /* rising edge sets regs 0x02 - 0x23 */ else buf[1] = 0x00; /* reset active bit */ tuner_i2c_xfer_send(&priv->i2c_props, buf, 2); }
static void tda8295_power(struct dvb_frontend *fe, int enable) { struct tda8290_priv *priv = fe->analog_demod_priv; unsigned char buf[] = { 0x30, 0x00 }; /* clb_stdbt */ tuner_i2c_xfer_send_recv(&priv->i2c_props, &buf[0], 1, &buf[1], 1); if (enable) buf[1] = 0x01; else buf[1] = 0x03; tuner_i2c_xfer_send(&priv->i2c_props, buf, 2); }
static void tda8295_set_params(struct dvb_frontend *fe, struct analog_parameters *params) { struct tda8290_priv *priv = fe->analog_demod_priv; u16 signal = 0; unsigned char blanking_mode[] = { 0x1d, 0x00 }; set_audio(fe, params); tuner_dbg("%s: freq = %d\n", __func__, params->frequency); tda8295_power(fe, 1); tda8295_agc1_out(fe, 1); tuner_i2c_xfer_send_recv(&priv->i2c_props, &blanking_mode[0], 1, &blanking_mode[1], 1); tda8295_set_video_std(fe); blanking_mode[1] = 0x03; tuner_i2c_xfer_send(&priv->i2c_props, blanking_mode, 2); msleep(20); if (fe->ops.analog_ops.i2c_gate_ctrl) fe->ops.analog_ops.i2c_gate_ctrl(fe, 1); if (fe->ops.tuner_ops.set_analog_params) fe->ops.tuner_ops.set_analog_params(fe, params); if (priv->cfg.agcf) priv->cfg.agcf(fe); tda8295_has_signal(fe, &signal); if (signal) tuner_dbg("tda8295 is locked\n"); else tuner_dbg("tda8295 not locked, no signal?\n"); if (fe->ops.analog_ops.i2c_gate_ctrl) fe->ops.analog_ops.i2c_gate_ctrl(fe, 0); }
static void tda8290_set_params(struct dvb_frontend *fe, struct analog_parameters *params) { struct tda8290_priv *priv = fe->analog_demod_priv; unsigned char soft_reset[] = { 0x00, 0x00 }; unsigned char easy_mode[] = { 0x01, priv->tda8290_easy_mode }; unsigned char expert_mode[] = { 0x01, 0x80 }; unsigned char agc_out_on[] = { 0x02, 0x00 }; unsigned char gainset_off[] = { 0x28, 0x14 }; unsigned char if_agc_spd[] = { 0x0f, 0x88 }; unsigned char adc_head_6[] = { 0x05, 0x04 }; unsigned char adc_head_9[] = { 0x05, 0x02 }; unsigned char adc_head_12[] = { 0x05, 0x01 }; unsigned char pll_bw_nom[] = { 0x0d, 0x47 }; unsigned char pll_bw_low[] = { 0x0d, 0x27 }; unsigned char gainset_2[] = { 0x28, 0x64 }; unsigned char agc_rst_on[] = { 0x0e, 0x0b }; unsigned char agc_rst_off[] = { 0x0e, 0x09 }; unsigned char if_agc_set[] = { 0x0f, 0x81 }; unsigned char addr_adc_sat = 0x1a; unsigned char addr_agc_stat = 0x1d; unsigned char addr_pll_stat = 0x1b; unsigned char adc_sat, agc_stat, pll_stat; int i; set_audio(fe, params); if (priv->cfg.config) tuner_dbg("tda827xa config is 0x%02x\n", priv->cfg.config); tuner_i2c_xfer_send(&priv->i2c_props, easy_mode, 2); tuner_i2c_xfer_send(&priv->i2c_props, agc_out_on, 2); tuner_i2c_xfer_send(&priv->i2c_props, soft_reset, 2); msleep(1); if (params->mode == V4L2_TUNER_RADIO) { unsigned char deemphasis[] = { 0x13, 1 }; /* FIXME: allow using a different deemphasis */ if (deemphasis_50) deemphasis[1] = 2; for (i = 0; i < ARRAY_SIZE(fm_mode); i++) tuner_i2c_xfer_send(&priv->i2c_props, fm_mode[i].seq, 2); tuner_i2c_xfer_send(&priv->i2c_props, deemphasis, 2); } else { expert_mode[1] = priv->tda8290_easy_mode + 0x80; tuner_i2c_xfer_send(&priv->i2c_props, expert_mode, 2); tuner_i2c_xfer_send(&priv->i2c_props, gainset_off, 2); tuner_i2c_xfer_send(&priv->i2c_props, if_agc_spd, 2); if (priv->tda8290_easy_mode & 0x60) tuner_i2c_xfer_send(&priv->i2c_props, adc_head_9, 2); else tuner_i2c_xfer_send(&priv->i2c_props, adc_head_6, 2); tuner_i2c_xfer_send(&priv->i2c_props, pll_bw_nom, 2); } if (fe->ops.analog_ops.i2c_gate_ctrl) fe->ops.analog_ops.i2c_gate_ctrl(fe, 1); if (fe->ops.tuner_ops.set_analog_params) fe->ops.tuner_ops.set_analog_params(fe, params); for (i = 0; i < 3; i++) { tuner_i2c_xfer_send_recv(&priv->i2c_props, &addr_pll_stat, 1, &pll_stat, 1); if (pll_stat & 0x80) { tuner_i2c_xfer_send_recv(&priv->i2c_props, &addr_adc_sat, 1, &adc_sat, 1); tuner_i2c_xfer_send_recv(&priv->i2c_props, &addr_agc_stat, 1, &agc_stat, 1); tuner_dbg("tda8290 is locked, AGC: %d\n", agc_stat); break; } else { tuner_dbg("tda8290 not locked, no signal?\n"); msleep(100); } } /* adjust headroom resp. gain */ if ((agc_stat > 115) || (!(pll_stat & 0x80) && (adc_sat < 20))) { tuner_dbg("adjust gain, step 1. Agc: %d, ADC stat: %d, lock: %d\n", agc_stat, adc_sat, pll_stat & 0x80); tuner_i2c_xfer_send(&priv->i2c_props, gainset_2, 2); msleep(100); tuner_i2c_xfer_send_recv(&priv->i2c_props, &addr_agc_stat, 1, &agc_stat, 1); tuner_i2c_xfer_send_recv(&priv->i2c_props, &addr_pll_stat, 1, &pll_stat, 1); if ((agc_stat > 115) || !(pll_stat & 0x80)) { tuner_dbg("adjust gain, step 2. Agc: %d, lock: %d\n", agc_stat, pll_stat & 0x80); if (priv->cfg.agcf) priv->cfg.agcf(fe); msleep(100); tuner_i2c_xfer_send_recv(&priv->i2c_props, &addr_agc_stat, 1, &agc_stat, 1); tuner_i2c_xfer_send_recv(&priv->i2c_props, &addr_pll_stat, 1, &pll_stat, 1); if((agc_stat > 115) || !(pll_stat & 0x80)) { tuner_dbg("adjust gain, step 3. Agc: %d\n", agc_stat); tuner_i2c_xfer_send(&priv->i2c_props, adc_head_12, 2); tuner_i2c_xfer_send(&priv->i2c_props, pll_bw_low, 2); msleep(100); } } } /* l/ l' deadlock? */ if(priv->tda8290_easy_mode & 0x60) { tuner_i2c_xfer_send_recv(&priv->i2c_props, &addr_adc_sat, 1, &adc_sat, 1); tuner_i2c_xfer_send_recv(&priv->i2c_props, &addr_pll_stat, 1, &pll_stat, 1); if ((adc_sat > 20) || !(pll_stat & 0x80)) { tuner_dbg("trying to resolve SECAM L deadlock\n"); tuner_i2c_xfer_send(&priv->i2c_props, agc_rst_on, 2); msleep(40); tuner_i2c_xfer_send(&priv->i2c_props, agc_rst_off, 2); } } if (fe->ops.analog_ops.i2c_gate_ctrl) fe->ops.analog_ops.i2c_gate_ctrl(fe, 0); tuner_i2c_xfer_send(&priv->i2c_props, if_agc_set, 2); }