| /* |
| tda18271-fe.c - driver for the Philips / NXP TDA18271 silicon tuner |
| |
| Copyright (C) 2007, 2008 Michael Krufky <mkrufky@linuxtv.org> |
| |
| This program is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 2 of the License, or |
| (at your option) any later version. |
| |
| This program is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| GNU General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with this program; if not, write to the Free Software |
| Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
| */ |
| |
| #include <linux/delay.h> |
| #include <linux/videodev2.h> |
| #include "tda18271-priv.h" |
| |
| int tda18271_debug; |
| module_param_named(debug, tda18271_debug, int, 0644); |
| MODULE_PARM_DESC(debug, "set debug level " |
| "(info=1, map=2, reg=4, adv=8, cal=16 (or-able))"); |
| |
| static int tda18271_cal_on_startup; |
| module_param_named(cal, tda18271_cal_on_startup, int, 0644); |
| MODULE_PARM_DESC(cal, "perform RF tracking filter calibration on startup"); |
| |
| static LIST_HEAD(tda18271_list); |
| static DEFINE_MUTEX(tda18271_list_mutex); |
| |
| /*---------------------------------------------------------------------*/ |
| |
| static int tda18271_ir_cal_init(struct dvb_frontend *fe) |
| { |
| struct tda18271_priv *priv = fe->tuner_priv; |
| unsigned char *regs = priv->tda18271_regs; |
| |
| tda18271_read_regs(fe); |
| |
| /* test IR_CAL_OK to see if we need init */ |
| if ((regs[R_EP1] & 0x08) == 0) |
| tda18271_init_regs(fe); |
| |
| return 0; |
| } |
| |
| /* ------------------------------------------------------------------ */ |
| |
| static int tda18271_channel_configuration(struct dvb_frontend *fe, |
| u32 ifc, u32 freq, u32 bw, u8 std, |
| int radio) |
| { |
| struct tda18271_priv *priv = fe->tuner_priv; |
| unsigned char *regs = priv->tda18271_regs; |
| u32 N; |
| |
| /* update TV broadcast parameters */ |
| |
| /* set standard */ |
| regs[R_EP3] &= ~0x1f; /* clear std bits */ |
| regs[R_EP3] |= std; |
| |
| /* set cal mode to normal */ |
| regs[R_EP4] &= ~0x03; |
| |
| /* update IF output level & IF notch frequency */ |
| regs[R_EP4] &= ~0x1c; /* clear if level bits */ |
| |
| switch (priv->mode) { |
| case TDA18271_ANALOG: |
| regs[R_MPD] &= ~0x80; /* IF notch = 0 */ |
| break; |
| case TDA18271_DIGITAL: |
| regs[R_EP4] |= 0x04; /* IF level = 1 */ |
| regs[R_MPD] |= 0x80; /* IF notch = 1 */ |
| break; |
| } |
| |
| if (radio) |
| regs[R_EP4] |= 0x80; |
| else |
| regs[R_EP4] &= ~0x80; |
| |
| /* update RF_TOP / IF_TOP */ |
| switch (priv->mode) { |
| case TDA18271_ANALOG: |
| regs[R_EB22] = 0x2c; |
| break; |
| case TDA18271_DIGITAL: |
| regs[R_EB22] = 0x37; |
| break; |
| } |
| tda18271_write_regs(fe, R_EB22, 1); |
| |
| /* --------------------------------------------------------------- */ |
| |
| /* disable Power Level Indicator */ |
| regs[R_EP1] |= 0x40; |
| |
| /* frequency dependent parameters */ |
| |
| tda18271_calc_ir_measure(fe, &freq); |
| |
| tda18271_calc_bp_filter(fe, &freq); |
| |
| tda18271_calc_rf_band(fe, &freq); |
| |
| tda18271_calc_gain_taper(fe, &freq); |
| |
| /* --------------------------------------------------------------- */ |
| |
| /* dual tuner and agc1 extra configuration */ |
| |
| /* main vco when Master, cal vco when slave */ |
| regs[R_EB1] |= 0x04; /* FIXME: assumes master */ |
| |
| /* agc1 always active */ |
| regs[R_EB1] &= ~0x02; |
| |
| /* agc1 has priority on agc2 */ |
| regs[R_EB1] &= ~0x01; |
| |
| tda18271_write_regs(fe, R_EB1, 1); |
| |
| /* --------------------------------------------------------------- */ |
| |
| N = freq + ifc; |
| |
| /* FIXME: assumes master */ |
| tda18271_calc_main_pll(fe, N); |
| tda18271_write_regs(fe, R_MPD, 4); |
| |
| tda18271_write_regs(fe, R_TM, 7); |
| |
| /* main pll charge pump source */ |
| regs[R_EB4] |= 0x20; |
| tda18271_write_regs(fe, R_EB4, 1); |
| |
| msleep(1); |
| |
| /* normal operation for the main pll */ |
| regs[R_EB4] &= ~0x20; |
| tda18271_write_regs(fe, R_EB4, 1); |
| |
| msleep(5); |
| |
| return 0; |
| } |
| |
| static int tda18271_read_thermometer(struct dvb_frontend *fe) |
| { |
| struct tda18271_priv *priv = fe->tuner_priv; |
| unsigned char *regs = priv->tda18271_regs; |
| int tm; |
| |
| /* switch thermometer on */ |
| regs[R_TM] |= 0x10; |
| tda18271_write_regs(fe, R_TM, 1); |
| |
| /* read thermometer info */ |
| tda18271_read_regs(fe); |
| |
| if ((((regs[R_TM] & 0x0f) == 0x00) && ((regs[R_TM] & 0x20) == 0x20)) || |
| (((regs[R_TM] & 0x0f) == 0x08) && ((regs[R_TM] & 0x20) == 0x00))) { |
| |
| if ((regs[R_TM] & 0x20) == 0x20) |
| regs[R_TM] &= ~0x20; |
| else |
| regs[R_TM] |= 0x20; |
| |
| tda18271_write_regs(fe, R_TM, 1); |
| |
| msleep(10); /* temperature sensing */ |
| |
| /* read thermometer info */ |
| tda18271_read_regs(fe); |
| } |
| |
| tm = tda18271_lookup_thermometer(fe); |
| |
| /* switch thermometer off */ |
| regs[R_TM] &= ~0x10; |
| tda18271_write_regs(fe, R_TM, 1); |
| |
| /* set CAL mode to normal */ |
| regs[R_EP4] &= ~0x03; |
| tda18271_write_regs(fe, R_EP4, 1); |
| |
| return tm; |
| } |
| |
| static int tda18271_rf_tracking_filters_correction(struct dvb_frontend *fe, |
| u32 freq) |
| { |
| struct tda18271_priv *priv = fe->tuner_priv; |
| struct tda18271_rf_tracking_filter_cal *map = priv->rf_cal_state; |
| unsigned char *regs = priv->tda18271_regs; |
| int tm_current, rfcal_comp, approx, i; |
| u8 dc_over_dt, rf_tab; |
| |
| /* power up */ |
| tda18271_set_standby_mode(fe, 0, 0, 0); |
| |
| /* read die current temperature */ |
| tm_current = tda18271_read_thermometer(fe); |
| |
| /* frequency dependent parameters */ |
| |
| tda18271_calc_rf_cal(fe, &freq); |
| rf_tab = regs[R_EB14]; |
| |
| i = tda18271_lookup_rf_band(fe, &freq, NULL); |
| if (i < 0) |
| return -EINVAL; |
| |
| if ((0 == map[i].rf3) || (freq / 1000 < map[i].rf2)) { |
| approx = map[i].rf_a1 * |
| (freq / 1000 - map[i].rf1) + map[i].rf_b1 + rf_tab; |
| } else { |
| approx = map[i].rf_a2 * |
| (freq / 1000 - map[i].rf2) + map[i].rf_b2 + rf_tab; |
| } |
| |
| if (approx < 0) |
| approx = 0; |
| if (approx > 255) |
| approx = 255; |
| |
| tda18271_lookup_map(fe, RF_CAL_DC_OVER_DT, &freq, &dc_over_dt); |
| |
| /* calculate temperature compensation */ |
| rfcal_comp = dc_over_dt * (tm_current - priv->tm_rfcal); |
| |
| regs[R_EB14] = approx + rfcal_comp; |
| tda18271_write_regs(fe, R_EB14, 1); |
| |
| return 0; |
| } |
| |
| static int tda18271_por(struct dvb_frontend *fe) |
| { |
| struct tda18271_priv *priv = fe->tuner_priv; |
| unsigned char *regs = priv->tda18271_regs; |
| |
| /* power up detector 1 */ |
| regs[R_EB12] &= ~0x20; |
| tda18271_write_regs(fe, R_EB12, 1); |
| |
| regs[R_EB18] &= ~0x80; /* turn agc1 loop on */ |
| regs[R_EB18] &= ~0x03; /* set agc1_gain to 6 dB */ |
| tda18271_write_regs(fe, R_EB18, 1); |
| |
| regs[R_EB21] |= 0x03; /* set agc2_gain to -6 dB */ |
| |
| /* POR mode */ |
| tda18271_set_standby_mode(fe, 1, 0, 0); |
| |
| /* disable 1.5 MHz low pass filter */ |
| regs[R_EB23] &= ~0x04; /* forcelp_fc2_en = 0 */ |
| regs[R_EB23] &= ~0x02; /* XXX: lp_fc[2] = 0 */ |
| tda18271_write_regs(fe, R_EB21, 3); |
| |
| return 0; |
| } |
| |
| static int tda18271_calibrate_rf(struct dvb_frontend *fe, u32 freq) |
| { |
| struct tda18271_priv *priv = fe->tuner_priv; |
| unsigned char *regs = priv->tda18271_regs; |
| u32 N; |
| |
| /* set CAL mode to normal */ |
| regs[R_EP4] &= ~0x03; |
| tda18271_write_regs(fe, R_EP4, 1); |
| |
| /* switch off agc1 */ |
| regs[R_EP3] |= 0x40; /* sm_lt = 1 */ |
| |
| regs[R_EB18] |= 0x03; /* set agc1_gain to 15 dB */ |
| tda18271_write_regs(fe, R_EB18, 1); |
| |
| /* frequency dependent parameters */ |
| |
| tda18271_calc_bp_filter(fe, &freq); |
| tda18271_calc_gain_taper(fe, &freq); |
| tda18271_calc_rf_band(fe, &freq); |
| tda18271_calc_km(fe, &freq); |
| |
| tda18271_write_regs(fe, R_EP1, 3); |
| tda18271_write_regs(fe, R_EB13, 1); |
| |
| /* main pll charge pump source */ |
| regs[R_EB4] |= 0x20; |
| tda18271_write_regs(fe, R_EB4, 1); |
| |
| /* cal pll charge pump source */ |
| regs[R_EB7] |= 0x20; |
| tda18271_write_regs(fe, R_EB7, 1); |
| |
| /* force dcdc converter to 0 V */ |
| regs[R_EB14] = 0x00; |
| tda18271_write_regs(fe, R_EB14, 1); |
| |
| /* disable plls lock */ |
| regs[R_EB20] &= ~0x20; |
| tda18271_write_regs(fe, R_EB20, 1); |
| |
| /* set CAL mode to RF tracking filter calibration */ |
| regs[R_EP4] |= 0x03; |
| tda18271_write_regs(fe, R_EP4, 2); |
| |
| /* --------------------------------------------------------------- */ |
| |
| /* set the internal calibration signal */ |
| N = freq; |
| |
| tda18271_calc_main_pll(fe, N); |
| tda18271_write_regs(fe, R_MPD, 4); |
| |
| /* downconvert internal calibration */ |
| N += 1000000; |
| |
| tda18271_calc_main_pll(fe, N); |
| tda18271_write_regs(fe, R_MPD, 4); |
| |
| msleep(5); |
| |
| tda18271_write_regs(fe, R_EP2, 1); |
| tda18271_write_regs(fe, R_EP1, 1); |
| tda18271_write_regs(fe, R_EP2, 1); |
| tda18271_write_regs(fe, R_EP1, 1); |
| |
| /* --------------------------------------------------------------- */ |
| |
| /* normal operation for the main pll */ |
| regs[R_EB4] &= ~0x20; |
| tda18271_write_regs(fe, R_EB4, 1); |
| |
| /* normal operation for the cal pll */ |
| regs[R_EB7] &= ~0x20; |
| tda18271_write_regs(fe, R_EB7, 1); |
| |
| msleep(5); /* plls locking */ |
| |
| /* launch the rf tracking filters calibration */ |
| regs[R_EB20] |= 0x20; |
| tda18271_write_regs(fe, R_EB20, 1); |
| |
| msleep(60); /* calibration */ |
| |
| /* --------------------------------------------------------------- */ |
| |
| /* set CAL mode to normal */ |
| regs[R_EP4] &= ~0x03; |
| |
| /* switch on agc1 */ |
| regs[R_EP3] &= ~0x40; /* sm_lt = 0 */ |
| |
| regs[R_EB18] &= ~0x03; /* set agc1_gain to 6 dB */ |
| tda18271_write_regs(fe, R_EB18, 1); |
| |
| tda18271_write_regs(fe, R_EP3, 2); |
| |
| /* synchronization */ |
| tda18271_write_regs(fe, R_EP1, 1); |
| |
| /* get calibration result */ |
| tda18271_read_extended(fe); |
| |
| return regs[R_EB14]; |
| } |
| |
| static int tda18271_powerscan(struct dvb_frontend *fe, |
| u32 *freq_in, u32 *freq_out) |
| { |
| struct tda18271_priv *priv = fe->tuner_priv; |
| unsigned char *regs = priv->tda18271_regs; |
| int sgn, bcal, count, wait; |
| u8 cid_target; |
| u16 count_limit; |
| u32 freq; |
| |
| freq = *freq_in; |
| |
| tda18271_calc_rf_band(fe, &freq); |
| tda18271_calc_rf_cal(fe, &freq); |
| tda18271_calc_gain_taper(fe, &freq); |
| tda18271_lookup_cid_target(fe, &freq, &cid_target, &count_limit); |
| |
| tda18271_write_regs(fe, R_EP2, 1); |
| tda18271_write_regs(fe, R_EB14, 1); |
| |
| /* downconvert frequency */ |
| freq += 1000000; |
| |
| tda18271_calc_main_pll(fe, freq); |
| tda18271_write_regs(fe, R_MPD, 4); |
| |
| msleep(5); /* pll locking */ |
| |
| /* detection mode */ |
| regs[R_EP4] &= ~0x03; |
| regs[R_EP4] |= 0x01; |
| tda18271_write_regs(fe, R_EP4, 1); |
| |
| /* launch power detection measurement */ |
| tda18271_write_regs(fe, R_EP2, 1); |
| |
| /* read power detection info, stored in EB10 */ |
| tda18271_read_extended(fe); |
| |
| /* algorithm initialization */ |
| sgn = 1; |
| *freq_out = *freq_in; |
| bcal = 0; |
| count = 0; |
| wait = false; |
| |
| while ((regs[R_EB10] & 0x3f) < cid_target) { |
| /* downconvert updated freq to 1 MHz */ |
| freq = *freq_in + (sgn * count) + 1000000; |
| |
| tda18271_calc_main_pll(fe, freq); |
| tda18271_write_regs(fe, R_MPD, 4); |
| |
| if (wait) { |
| msleep(5); /* pll locking */ |
| wait = false; |
| } else |
| udelay(100); /* pll locking */ |
| |
| /* launch power detection measurement */ |
| tda18271_write_regs(fe, R_EP2, 1); |
| |
| /* read power detection info, stored in EB10 */ |
| tda18271_read_extended(fe); |
| |
| count += 200; |
| |
| if (count < count_limit) |
| continue; |
| |
| if (sgn <= 0) |
| break; |
| |
| sgn = -1 * sgn; |
| count = 200; |
| wait = true; |
| } |
| |
| if ((regs[R_EB10] & 0x3f) >= cid_target) { |
| bcal = 1; |
| *freq_out = freq - 1000000; |
| } else |
| bcal = 0; |
| |
| tda_cal("bcal = %d, freq_in = %d, freq_out = %d (freq = %d)\n", |
| bcal, *freq_in, *freq_out, freq); |
| |
| return bcal; |
| } |
| |
| static int tda18271_powerscan_init(struct dvb_frontend *fe) |
| { |
| struct tda18271_priv *priv = fe->tuner_priv; |
| unsigned char *regs = priv->tda18271_regs; |
| |
| /* set standard to digital */ |
| regs[R_EP3] &= ~0x1f; /* clear std bits */ |
| regs[R_EP3] |= 0x12; |
| |
| /* set cal mode to normal */ |
| regs[R_EP4] &= ~0x03; |
| |
| /* update IF output level & IF notch frequency */ |
| regs[R_EP4] &= ~0x1c; /* clear if level bits */ |
| |
| tda18271_write_regs(fe, R_EP3, 2); |
| |
| regs[R_EB18] &= ~0x03; /* set agc1_gain to 6 dB */ |
| tda18271_write_regs(fe, R_EB18, 1); |
| |
| regs[R_EB21] &= ~0x03; /* set agc2_gain to -15 dB */ |
| |
| /* 1.5 MHz low pass filter */ |
| regs[R_EB23] |= 0x04; /* forcelp_fc2_en = 1 */ |
| regs[R_EB23] |= 0x02; /* lp_fc[2] = 1 */ |
| |
| tda18271_write_regs(fe, R_EB21, 3); |
| |
| return 0; |
| } |
| |
| static int tda18271_rf_tracking_filters_init(struct dvb_frontend *fe, u32 freq) |
| { |
| struct tda18271_priv *priv = fe->tuner_priv; |
| struct tda18271_rf_tracking_filter_cal *map = priv->rf_cal_state; |
| unsigned char *regs = priv->tda18271_regs; |
| int bcal, rf, i; |
| #define RF1 0 |
| #define RF2 1 |
| #define RF3 2 |
| u32 rf_default[3]; |
| u32 rf_freq[3]; |
| u8 prog_cal[3]; |
| u8 prog_tab[3]; |
| |
| i = tda18271_lookup_rf_band(fe, &freq, NULL); |
| |
| if (i < 0) |
| return i; |
| |
| rf_default[RF1] = 1000 * map[i].rf1_def; |
| rf_default[RF2] = 1000 * map[i].rf2_def; |
| rf_default[RF3] = 1000 * map[i].rf3_def; |
| |
| for (rf = RF1; rf <= RF3; rf++) { |
| if (0 == rf_default[rf]) |
| return 0; |
| tda_cal("freq = %d, rf = %d\n", freq, rf); |
| |
| /* look for optimized calibration frequency */ |
| bcal = tda18271_powerscan(fe, &rf_default[rf], &rf_freq[rf]); |
| |
| tda18271_calc_rf_cal(fe, &rf_freq[rf]); |
| prog_tab[rf] = regs[R_EB14]; |
| |
| if (1 == bcal) |
| prog_cal[rf] = tda18271_calibrate_rf(fe, rf_freq[rf]); |
| else |
| prog_cal[rf] = prog_tab[rf]; |
| |
| switch (rf) { |
| case RF1: |
| map[i].rf_a1 = 0; |
| map[i].rf_b1 = prog_cal[RF1] - prog_tab[RF1]; |
| map[i].rf1 = rf_freq[RF1] / 1000; |
| break; |
| case RF2: |
| map[i].rf_a1 = (prog_cal[RF2] - prog_tab[RF2] - |
| prog_cal[RF1] + prog_tab[RF1]) / |
| ((rf_freq[RF2] - rf_freq[RF1]) / 1000); |
| map[i].rf2 = rf_freq[RF2] / 1000; |
| break; |
| case RF3: |
| map[i].rf_a2 = (prog_cal[RF3] - prog_tab[RF3] - |
| prog_cal[RF2] + prog_tab[RF2]) / |
| ((rf_freq[RF3] - rf_freq[RF2]) / 1000); |
| map[i].rf_b2 = prog_cal[RF2] - prog_tab[RF2]; |
| map[i].rf3 = rf_freq[RF3] / 1000; |
| break; |
| default: |
| BUG(); |
| } |
| } |
| |
| return 0; |
| } |
| |
| static int tda18271_calc_rf_filter_curve(struct dvb_frontend *fe) |
| { |
| struct tda18271_priv *priv = fe->tuner_priv; |
| unsigned int i; |
| |
| tda_info("tda18271: performing RF tracking filter calibration\n"); |
| |
| /* wait for die temperature stabilization */ |
| msleep(200); |
| |
| tda18271_powerscan_init(fe); |
| |
| /* rf band calibration */ |
| for (i = 0; priv->rf_cal_state[i].rfmax != 0; i++) |
| tda18271_rf_tracking_filters_init(fe, 1000 * |
| priv->rf_cal_state[i].rfmax); |
| |
| priv->tm_rfcal = tda18271_read_thermometer(fe); |
| |
| return 0; |
| } |
| |
| /* ------------------------------------------------------------------ */ |
| |
| static int tda18271_rf_cal_init(struct dvb_frontend *fe) |
| { |
| struct tda18271_priv *priv = fe->tuner_priv; |
| unsigned char *regs = priv->tda18271_regs; |
| |
| /* test RF_CAL_OK to see if we need init */ |
| if ((regs[R_EP1] & 0x10) == 0) |
| priv->cal_initialized = false; |
| |
| if (priv->cal_initialized) |
| return 0; |
| |
| tda18271_calc_rf_filter_curve(fe); |
| |
| tda18271_por(fe); |
| |
| tda_info("tda18271: RF tracking filter calibration complete\n"); |
| |
| priv->cal_initialized = true; |
| |
| return 0; |
| } |
| |
| static int tda18271_init(struct dvb_frontend *fe) |
| { |
| struct tda18271_priv *priv = fe->tuner_priv; |
| |
| mutex_lock(&priv->lock); |
| |
| /* power up */ |
| tda18271_set_standby_mode(fe, 0, 0, 0); |
| |
| /* initialization */ |
| tda18271_ir_cal_init(fe); |
| |
| if (priv->id == TDA18271HDC2) |
| tda18271_rf_cal_init(fe); |
| |
| mutex_unlock(&priv->lock); |
| |
| return 0; |
| } |
| |
| static int tda18271c2_tune(struct dvb_frontend *fe, |
| u32 ifc, u32 freq, u32 bw, u8 std, int radio) |
| { |
| struct tda18271_priv *priv = fe->tuner_priv; |
| |
| tda_dbg("freq = %d, ifc = %d\n", freq, ifc); |
| |
| tda18271_init(fe); |
| |
| mutex_lock(&priv->lock); |
| |
| tda18271_rf_tracking_filters_correction(fe, freq); |
| |
| tda18271_channel_configuration(fe, ifc, freq, bw, std, radio); |
| |
| mutex_unlock(&priv->lock); |
| |
| return 0; |
| } |
| |
| /* ------------------------------------------------------------------ */ |
| |
| static int tda18271c1_tune(struct dvb_frontend *fe, |
| u32 ifc, u32 freq, u32 bw, u8 std, int radio) |
| { |
| struct tda18271_priv *priv = fe->tuner_priv; |
| unsigned char *regs = priv->tda18271_regs; |
| u32 N = 0; |
| |
| tda18271_init(fe); |
| |
| mutex_lock(&priv->lock); |
| |
| tda_dbg("freq = %d, ifc = %d\n", freq, ifc); |
| |
| /* RF tracking filter calibration */ |
| |
| /* calculate bp filter */ |
| tda18271_calc_bp_filter(fe, &freq); |
| tda18271_write_regs(fe, R_EP1, 1); |
| |
| regs[R_EB4] &= 0x07; |
| regs[R_EB4] |= 0x60; |
| tda18271_write_regs(fe, R_EB4, 1); |
| |
| regs[R_EB7] = 0x60; |
| tda18271_write_regs(fe, R_EB7, 1); |
| |
| regs[R_EB14] = 0x00; |
| tda18271_write_regs(fe, R_EB14, 1); |
| |
| regs[R_EB20] = 0xcc; |
| tda18271_write_regs(fe, R_EB20, 1); |
| |
| /* set cal mode to RF tracking filter calibration */ |
| regs[R_EP4] |= 0x03; |
| |
| /* calculate cal pll */ |
| |
| switch (priv->mode) { |
| case TDA18271_ANALOG: |
| N = freq - 1250000; |
| break; |
| case TDA18271_DIGITAL: |
| N = freq + bw / 2; |
| break; |
| } |
| |
| tda18271_calc_cal_pll(fe, N); |
| |
| /* calculate main pll */ |
| |
| switch (priv->mode) { |
| case TDA18271_ANALOG: |
| N = freq - 250000; |
| break; |
| case TDA18271_DIGITAL: |
| N = freq + bw / 2 + 1000000; |
| break; |
| } |
| |
| tda18271_calc_main_pll(fe, N); |
| |
| tda18271_write_regs(fe, R_EP3, 11); |
| msleep(5); /* RF tracking filter calibration initialization */ |
| |
| /* search for K,M,CO for RF calibration */ |
| tda18271_calc_km(fe, &freq); |
| tda18271_write_regs(fe, R_EB13, 1); |
| |
| /* search for rf band */ |
| tda18271_calc_rf_band(fe, &freq); |
| |
| /* search for gain taper */ |
| tda18271_calc_gain_taper(fe, &freq); |
| |
| tda18271_write_regs(fe, R_EP2, 1); |
| tda18271_write_regs(fe, R_EP1, 1); |
| tda18271_write_regs(fe, R_EP2, 1); |
| tda18271_write_regs(fe, R_EP1, 1); |
| |
| regs[R_EB4] &= 0x07; |
| regs[R_EB4] |= 0x40; |
| tda18271_write_regs(fe, R_EB4, 1); |
| |
| regs[R_EB7] = 0x40; |
| tda18271_write_regs(fe, R_EB7, 1); |
| msleep(10); |
| |
| regs[R_EB20] = 0xec; |
| tda18271_write_regs(fe, R_EB20, 1); |
| msleep(60); /* RF tracking filter calibration completion */ |
| |
| regs[R_EP4] &= ~0x03; /* set cal mode to normal */ |
| tda18271_write_regs(fe, R_EP4, 1); |
| |
| tda18271_write_regs(fe, R_EP1, 1); |
| |
| /* RF tracking filter correction for VHF_Low band */ |
| if (0 == tda18271_calc_rf_cal(fe, &freq)) |
| tda18271_write_regs(fe, R_EB14, 1); |
| |
| /* Channel Configuration */ |
| |
| switch (priv->mode) { |
| case TDA18271_ANALOG: |
| regs[R_EB22] = 0x2c; |
| break; |
| case TDA18271_DIGITAL: |
| regs[R_EB22] = 0x37; |
| break; |
| } |
| tda18271_write_regs(fe, R_EB22, 1); |
| |
| regs[R_EP1] |= 0x40; /* set dis power level on */ |
| |
| /* set standard */ |
| regs[R_EP3] &= ~0x1f; /* clear std bits */ |
| |
| /* see table 22 */ |
| regs[R_EP3] |= std; |
| |
| regs[R_EP4] &= ~0x03; /* set cal mode to normal */ |
| |
| regs[R_EP4] &= ~0x1c; /* clear if level bits */ |
| switch (priv->mode) { |
| case TDA18271_ANALOG: |
| regs[R_MPD] &= ~0x80; /* IF notch = 0 */ |
| break; |
| case TDA18271_DIGITAL: |
| regs[R_EP4] |= 0x04; |
| regs[R_MPD] |= 0x80; |
| break; |
| } |
| |
| if (radio) |
| regs[R_EP4] |= 0x80; |
| else |
| regs[R_EP4] &= ~0x80; |
| |
| /* image rejection validity */ |
| tda18271_calc_ir_measure(fe, &freq); |
| |
| /* calculate MAIN PLL */ |
| N = freq + ifc; |
| |
| tda18271_calc_main_pll(fe, N); |
| |
| tda18271_write_regs(fe, R_TM, 15); |
| msleep(5); |
| mutex_unlock(&priv->lock); |
| |
| return 0; |
| } |
| |
| static inline int tda18271_tune(struct dvb_frontend *fe, |
| u32 ifc, u32 freq, u32 bw, u8 std, int radio) |
| { |
| struct tda18271_priv *priv = fe->tuner_priv; |
| int ret = -EINVAL; |
| |
| switch (priv->id) { |
| case TDA18271HDC1: |
| ret = tda18271c1_tune(fe, ifc, freq, bw, std, radio); |
| break; |
| case TDA18271HDC2: |
| ret = tda18271c2_tune(fe, ifc, freq, bw, std, radio); |
| break; |
| } |
| return ret; |
| } |
| |
| /* ------------------------------------------------------------------ */ |
| |
| static int tda18271_set_params(struct dvb_frontend *fe, |
| struct dvb_frontend_parameters *params) |
| { |
| struct tda18271_priv *priv = fe->tuner_priv; |
| struct tda18271_std_map *std_map = &priv->std; |
| int ret; |
| u8 std; |
| u16 sgIF; |
| u32 bw, freq = params->frequency; |
| |
| priv->mode = TDA18271_DIGITAL; |
| |
| if (fe->ops.info.type == FE_ATSC) { |
| switch (params->u.vsb.modulation) { |
| case VSB_8: |
| case VSB_16: |
| std = std_map->atsc_6.std_bits; |
| sgIF = std_map->atsc_6.if_freq; |
| break; |
| case QAM_64: |
| case QAM_256: |
| std = std_map->qam_6.std_bits; |
| sgIF = std_map->qam_6.if_freq; |
| break; |
| default: |
| tda_warn("modulation not set!\n"); |
| return -EINVAL; |
| } |
| #if 0 |
| /* userspace request is already center adjusted */ |
| freq += 1750000; /* Adjust to center (+1.75MHZ) */ |
| #endif |
| bw = 6000000; |
| } else if (fe->ops.info.type == FE_OFDM) { |
| switch (params->u.ofdm.bandwidth) { |
| case BANDWIDTH_6_MHZ: |
| bw = 6000000; |
| std = std_map->dvbt_6.std_bits; |
| sgIF = std_map->dvbt_6.if_freq; |
| break; |
| case BANDWIDTH_7_MHZ: |
| bw = 7000000; |
| std = std_map->dvbt_7.std_bits; |
| sgIF = std_map->dvbt_7.if_freq; |
| break; |
| case BANDWIDTH_8_MHZ: |
| bw = 8000000; |
| std = std_map->dvbt_8.std_bits; |
| sgIF = std_map->dvbt_8.if_freq; |
| break; |
| default: |
| tda_warn("bandwidth not set!\n"); |
| return -EINVAL; |
| } |
| } else { |
| tda_warn("modulation type not supported!\n"); |
| return -EINVAL; |
| } |
| |
| /* When tuning digital, the analog demod must be tri-stated */ |
| if (fe->ops.analog_ops.standby) |
| fe->ops.analog_ops.standby(fe); |
| |
| ret = tda18271_tune(fe, sgIF * 1000, freq, bw, std, 0); |
| |
| if (ret < 0) |
| goto fail; |
| |
| priv->frequency = freq; |
| priv->bandwidth = (fe->ops.info.type == FE_OFDM) ? |
| params->u.ofdm.bandwidth : 0; |
| fail: |
| return ret; |
| } |
| |
| static int tda18271_set_analog_params(struct dvb_frontend *fe, |
| struct analog_parameters *params) |
| { |
| struct tda18271_priv *priv = fe->tuner_priv; |
| struct tda18271_std_map *std_map = &priv->std; |
| char *mode; |
| int ret, radio = 0; |
| u8 std; |
| u16 sgIF; |
| u32 freq = params->frequency * 62500; |
| |
| priv->mode = TDA18271_ANALOG; |
| |
| if (params->mode == V4L2_TUNER_RADIO) { |
| radio = 1; |
| freq = freq / 1000; |
| std = std_map->fm_radio.std_bits; |
| sgIF = std_map->fm_radio.if_freq; |
| mode = "fm"; |
| } else if (params->std & V4L2_STD_MN) { |
| std = std_map->atv_mn.std_bits; |
| sgIF = std_map->atv_mn.if_freq; |
| mode = "MN"; |
| } else if (params->std & V4L2_STD_B) { |
| std = std_map->atv_b.std_bits; |
| sgIF = std_map->atv_b.if_freq; |
| mode = "B"; |
| } else if (params->std & V4L2_STD_GH) { |
| std = std_map->atv_gh.std_bits; |
| sgIF = std_map->atv_gh.if_freq; |
| mode = "GH"; |
| } else if (params->std & V4L2_STD_PAL_I) { |
| std = std_map->atv_i.std_bits; |
| sgIF = std_map->atv_i.if_freq; |
| mode = "I"; |
| } else if (params->std & V4L2_STD_DK) { |
| std = std_map->atv_dk.std_bits; |
| sgIF = std_map->atv_dk.if_freq; |
| mode = "DK"; |
| } else if (params->std & V4L2_STD_SECAM_L) { |
| std = std_map->atv_l.std_bits; |
| sgIF = std_map->atv_l.if_freq; |
| mode = "L"; |
| } else if (params->std & V4L2_STD_SECAM_LC) { |
| std = std_map->atv_lc.std_bits; |
| sgIF = std_map->atv_lc.if_freq; |
| mode = "L'"; |
| } else { |
| std = std_map->atv_i.std_bits; |
| sgIF = std_map->atv_i.if_freq; |
| mode = "xx"; |
| } |
| |
| tda_dbg("setting tda18271 to system %s\n", mode); |
| |
| ret = tda18271_tune(fe, sgIF * 1000, freq, 0, std, radio); |
| |
| if (ret < 0) |
| goto fail; |
| |
| priv->frequency = freq; |
| priv->bandwidth = 0; |
| fail: |
| return ret; |
| } |
| |
| static int tda18271_sleep(struct dvb_frontend *fe) |
| { |
| struct tda18271_priv *priv = fe->tuner_priv; |
| |
| mutex_lock(&priv->lock); |
| |
| /* standby mode w/ slave tuner output |
| * & loop thru & xtal oscillator on */ |
| tda18271_set_standby_mode(fe, 1, 0, 0); |
| |
| mutex_unlock(&priv->lock); |
| |
| return 0; |
| } |
| |
| static int tda18271_release(struct dvb_frontend *fe) |
| { |
| struct tda18271_priv *priv = fe->tuner_priv; |
| |
| mutex_lock(&tda18271_list_mutex); |
| |
| priv->count--; |
| |
| if (!priv->count) { |
| tda_dbg("destroying instance @ %d-%04x\n", |
| i2c_adapter_id(priv->i2c_adap), |
| priv->i2c_addr); |
| list_del(&priv->tda18271_list); |
| |
| kfree(priv); |
| } |
| mutex_unlock(&tda18271_list_mutex); |
| |
| fe->tuner_priv = NULL; |
| |
| return 0; |
| } |
| |
| static int tda18271_get_frequency(struct dvb_frontend *fe, u32 *frequency) |
| { |
| struct tda18271_priv *priv = fe->tuner_priv; |
| *frequency = priv->frequency; |
| return 0; |
| } |
| |
| static int tda18271_get_bandwidth(struct dvb_frontend *fe, u32 *bandwidth) |
| { |
| struct tda18271_priv *priv = fe->tuner_priv; |
| *bandwidth = priv->bandwidth; |
| return 0; |
| } |
| |
| /* ------------------------------------------------------------------ */ |
| |
| #define tda18271_update_std(std_cfg, name) do { \ |
| if (map->std_cfg.if_freq + map->std_cfg.std_bits > 0) { \ |
| tda_dbg("Using custom std config for %s\n", name); \ |
| memcpy(&std->std_cfg, &map->std_cfg, \ |
| sizeof(struct tda18271_std_map_item)); \ |
| } } while (0) |
| |
| #define tda18271_dump_std_item(std_cfg, name) do { \ |
| tda_dbg("(%s) if freq = %d, std bits = 0x%02x\n", \ |
| name, std->std_cfg.if_freq, std->std_cfg.std_bits); \ |
| } while (0) |
| |
| static int tda18271_dump_std_map(struct dvb_frontend *fe) |
| { |
| struct tda18271_priv *priv = fe->tuner_priv; |
| struct tda18271_std_map *std = &priv->std; |
| |
| tda_dbg("========== STANDARD MAP SETTINGS ==========\n"); |
| tda18271_dump_std_item(fm_radio, "fm"); |
| tda18271_dump_std_item(atv_b, "pal b"); |
| tda18271_dump_std_item(atv_dk, "pal dk"); |
| tda18271_dump_std_item(atv_gh, "pal gh"); |
| tda18271_dump_std_item(atv_i, "pal i"); |
| tda18271_dump_std_item(atv_l, "pal l"); |
| tda18271_dump_std_item(atv_lc, "pal l'"); |
| tda18271_dump_std_item(atv_mn, "atv mn"); |
| tda18271_dump_std_item(atsc_6, "atsc 6"); |
| tda18271_dump_std_item(dvbt_6, "dvbt 6"); |
| tda18271_dump_std_item(dvbt_7, "dvbt 7"); |
| tda18271_dump_std_item(dvbt_8, "dvbt 8"); |
| tda18271_dump_std_item(qam_6, "qam 6"); |
| tda18271_dump_std_item(qam_8, "qam 8"); |
| |
| return 0; |
| } |
| |
| static int tda18271_update_std_map(struct dvb_frontend *fe, |
| struct tda18271_std_map *map) |
| { |
| struct tda18271_priv *priv = fe->tuner_priv; |
| struct tda18271_std_map *std = &priv->std; |
| |
| if (!map) |
| return -EINVAL; |
| |
| tda18271_update_std(fm_radio, "fm"); |
| tda18271_update_std(atv_b, "atv b"); |
| tda18271_update_std(atv_dk, "atv dk"); |
| tda18271_update_std(atv_gh, "atv gh"); |
| tda18271_update_std(atv_i, "atv i"); |
| tda18271_update_std(atv_l, "atv l"); |
| tda18271_update_std(atv_lc, "atv l'"); |
| tda18271_update_std(atv_mn, "atv mn"); |
| tda18271_update_std(atsc_6, "atsc 6"); |
| tda18271_update_std(dvbt_6, "dvbt 6"); |
| tda18271_update_std(dvbt_7, "dvbt 7"); |
| tda18271_update_std(dvbt_8, "dvbt 8"); |
| tda18271_update_std(qam_6, "qam 6"); |
| tda18271_update_std(qam_8, "qam 8"); |
| |
| return 0; |
| } |
| |
| static int tda18271_get_id(struct dvb_frontend *fe) |
| { |
| struct tda18271_priv *priv = fe->tuner_priv; |
| unsigned char *regs = priv->tda18271_regs; |
| char *name; |
| int ret = 0; |
| |
| mutex_lock(&priv->lock); |
| tda18271_read_regs(fe); |
| mutex_unlock(&priv->lock); |
| |
| switch (regs[R_ID] & 0x7f) { |
| case 3: |
| name = "TDA18271HD/C1"; |
| priv->id = TDA18271HDC1; |
| break; |
| case 4: |
| name = "TDA18271HD/C2"; |
| priv->id = TDA18271HDC2; |
| break; |
| default: |
| name = "Unknown device"; |
| ret = -EINVAL; |
| break; |
| } |
| |
| tda_info("%s detected @ %d-%04x%s\n", name, |
| i2c_adapter_id(priv->i2c_adap), priv->i2c_addr, |
| (0 == ret) ? "" : ", device not supported."); |
| |
| return ret; |
| } |
| |
| static struct dvb_tuner_ops tda18271_tuner_ops = { |
| .info = { |
| .name = "NXP TDA18271HD", |
| .frequency_min = 45000000, |
| .frequency_max = 864000000, |
| .frequency_step = 62500 |
| }, |
| .init = tda18271_init, |
| .sleep = tda18271_sleep, |
| .set_params = tda18271_set_params, |
| .set_analog_params = tda18271_set_analog_params, |
| .release = tda18271_release, |
| .get_frequency = tda18271_get_frequency, |
| .get_bandwidth = tda18271_get_bandwidth, |
| }; |
| |
| struct dvb_frontend *tda18271_attach(struct dvb_frontend *fe, u8 addr, |
| struct i2c_adapter *i2c, |
| struct tda18271_config *cfg) |
| { |
| struct tda18271_priv *priv = NULL; |
| int state_found = 0; |
| |
| mutex_lock(&tda18271_list_mutex); |
| |
| list_for_each_entry(priv, &tda18271_list, tda18271_list) { |
| if ((i2c_adapter_id(priv->i2c_adap) == i2c_adapter_id(i2c)) && |
| (priv->i2c_addr == addr)) { |
| tda_dbg("attaching existing tuner @ %d-%04x\n", |
| i2c_adapter_id(priv->i2c_adap), |
| priv->i2c_addr); |
| priv->count++; |
| fe->tuner_priv = priv; |
| state_found = 1; |
| /* allow dvb driver to override i2c gate setting */ |
| if ((cfg) && (cfg->gate != TDA18271_GATE_ANALOG)) |
| priv->gate = cfg->gate; |
| break; |
| } |
| } |
| if (state_found == 0) { |
| tda_dbg("creating new tuner instance @ %d-%04x\n", |
| i2c_adapter_id(i2c), addr); |
| |
| priv = kzalloc(sizeof(struct tda18271_priv), GFP_KERNEL); |
| if (priv == NULL) { |
| mutex_unlock(&tda18271_list_mutex); |
| return NULL; |
| } |
| |
| priv->i2c_addr = addr; |
| priv->i2c_adap = i2c; |
| priv->gate = (cfg) ? cfg->gate : TDA18271_GATE_AUTO; |
| priv->cal_initialized = false; |
| mutex_init(&priv->lock); |
| priv->count++; |
| |
| fe->tuner_priv = priv; |
| |
| list_add_tail(&priv->tda18271_list, &tda18271_list); |
| |
| if (tda18271_get_id(fe) < 0) |
| goto fail; |
| |
| if (tda18271_assign_map_layout(fe) < 0) |
| goto fail; |
| |
| mutex_lock(&priv->lock); |
| tda18271_init_regs(fe); |
| |
| if ((tda18271_cal_on_startup) && (priv->id == TDA18271HDC2)) |
| tda18271_rf_cal_init(fe); |
| |
| mutex_unlock(&priv->lock); |
| } |
| |
| /* override default std map with values in config struct */ |
| if ((cfg) && (cfg->std_map)) |
| tda18271_update_std_map(fe, cfg->std_map); |
| |
| mutex_unlock(&tda18271_list_mutex); |
| |
| memcpy(&fe->ops.tuner_ops, &tda18271_tuner_ops, |
| sizeof(struct dvb_tuner_ops)); |
| |
| if (tda18271_debug & DBG_MAP) |
| tda18271_dump_std_map(fe); |
| |
| return fe; |
| fail: |
| mutex_unlock(&tda18271_list_mutex); |
| |
| tda18271_release(fe); |
| return NULL; |
| } |
| EXPORT_SYMBOL_GPL(tda18271_attach); |
| MODULE_DESCRIPTION("NXP TDA18271HD analog / digital tuner driver"); |
| MODULE_AUTHOR("Michael Krufky <mkrufky@linuxtv.org>"); |
| MODULE_LICENSE("GPL"); |
| MODULE_VERSION("0.2"); |
| |
| /* |
| * Overrides for Emacs so that we follow Linus's tabbing style. |
| * --------------------------------------------------------------------------- |
| * Local variables: |
| * c-basic-offset: 8 |
| * End: |
| */ |
