diff options
Diffstat (limited to 'drivers/media/dvb/frontends/tda18271-fe.c')
| -rw-r--r-- | drivers/media/dvb/frontends/tda18271-fe.c | 1225 |
1 files changed, 1225 insertions, 0 deletions
diff --git a/drivers/media/dvb/frontends/tda18271-fe.c b/drivers/media/dvb/frontends/tda18271-fe.c new file mode 100644 index 000000000000..dfe72aaec380 --- /dev/null +++ b/drivers/media/dvb/frontends/tda18271-fe.c @@ -0,0 +1,1225 @@ +/* + 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: + */ |