diff options
Diffstat (limited to 'drivers/media/tuners/tda18271-fe.c')
| -rw-r--r-- | drivers/media/tuners/tda18271-fe.c | 1362 |
1 files changed, 1362 insertions, 0 deletions
diff --git a/drivers/media/tuners/tda18271-fe.c b/drivers/media/tuners/tda18271-fe.c new file mode 100644 index 000000000000..72c26fd77922 --- /dev/null +++ b/drivers/media/tuners/tda18271-fe.c @@ -0,0 +1,1362 @@ +/* + 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 = -1; +module_param_named(cal, tda18271_cal_on_startup, int, 0644); +MODULE_PARM_DESC(cal, "perform RF tracking filter calibration on startup"); + +static DEFINE_MUTEX(tda18271_list_mutex); +static LIST_HEAD(hybrid_tuner_instance_list); + +/*---------------------------------------------------------------------*/ + +static int tda18271_toggle_output(struct dvb_frontend *fe, int standby) +{ + struct tda18271_priv *priv = fe->tuner_priv; + + int ret = tda18271_set_standby_mode(fe, standby ? 1 : 0, + priv->output_opt & TDA18271_OUTPUT_LT_OFF ? 1 : 0, + priv->output_opt & TDA18271_OUTPUT_XT_OFF ? 1 : 0); + + if (tda_fail(ret)) + goto fail; + + tda_dbg("%s mode: xtal oscillator %s, slave tuner loop thru %s\n", + standby ? "standby" : "active", + priv->output_opt & TDA18271_OUTPUT_XT_OFF ? "off" : "on", + priv->output_opt & TDA18271_OUTPUT_LT_OFF ? "off" : "on"); +fail: + return ret; +} + +/*---------------------------------------------------------------------*/ + +static inline int charge_pump_source(struct dvb_frontend *fe, int force) +{ + struct tda18271_priv *priv = fe->tuner_priv; + return tda18271_charge_pump_source(fe, + (priv->role == TDA18271_SLAVE) ? + TDA18271_CAL_PLL : + TDA18271_MAIN_PLL, force); +} + +static inline void tda18271_set_if_notch(struct dvb_frontend *fe) +{ + struct tda18271_priv *priv = fe->tuner_priv; + unsigned char *regs = priv->tda18271_regs; + + switch (priv->mode) { + case TDA18271_ANALOG: + regs[R_MPD] &= ~0x80; /* IF notch = 0 */ + break; + case TDA18271_DIGITAL: + regs[R_MPD] |= 0x80; /* IF notch = 1 */ + break; + } +} + +static int tda18271_channel_configuration(struct dvb_frontend *fe, + struct tda18271_std_map_item *map, + u32 freq, u32 bw) +{ + struct tda18271_priv *priv = fe->tuner_priv; + unsigned char *regs = priv->tda18271_regs; + int ret; + u32 N; + + /* update TV broadcast parameters */ + + /* set standard */ + regs[R_EP3] &= ~0x1f; /* clear std bits */ + regs[R_EP3] |= (map->agc_mode << 3) | map->std; + + if (priv->id == TDA18271HDC2) { + /* set rfagc to high speed mode */ + regs[R_EP3] &= ~0x04; + } + + /* set cal mode to normal */ + regs[R_EP4] &= ~0x03; + + /* update IF output level */ + regs[R_EP4] &= ~0x1c; /* clear if level bits */ + regs[R_EP4] |= (map->if_lvl << 2); + + /* update FM_RFn */ + regs[R_EP4] &= ~0x80; + regs[R_EP4] |= map->fm_rfn << 7; + + /* update rf top / if top */ + regs[R_EB22] = 0x00; + regs[R_EB22] |= map->rfagc_top; + ret = tda18271_write_regs(fe, R_EB22, 1); + if (tda_fail(ret)) + goto fail; + + /* --------------------------------------------------------------- */ + + /* disable Power Level Indicator */ + regs[R_EP1] |= 0x40; + + /* make sure thermometer is off */ + regs[R_TM] &= ~0x10; + + /* 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 */ + + switch (priv->role) { + case TDA18271_MASTER: + regs[R_EB1] |= 0x04; /* main vco */ + break; + case TDA18271_SLAVE: + regs[R_EB1] &= ~0x04; /* cal vco */ + break; + } + + /* agc1 always active */ + regs[R_EB1] &= ~0x02; + + /* agc1 has priority on agc2 */ + regs[R_EB1] &= ~0x01; + + ret = tda18271_write_regs(fe, R_EB1, 1); + if (tda_fail(ret)) + goto fail; + + /* --------------------------------------------------------------- */ + + N = map->if_freq * 1000 + freq; + + switch (priv->role) { + case TDA18271_MASTER: + tda18271_calc_main_pll(fe, N); + tda18271_set_if_notch(fe); + tda18271_write_regs(fe, R_MPD, 4); + break; + case TDA18271_SLAVE: + tda18271_calc_cal_pll(fe, N); + tda18271_write_regs(fe, R_CPD, 4); + + regs[R_MPD] = regs[R_CPD] & 0x7f; + tda18271_set_if_notch(fe); + tda18271_write_regs(fe, R_MPD, 1); + break; + } + + ret = tda18271_write_regs(fe, R_TM, 7); + if (tda_fail(ret)) + goto fail; + + /* force charge pump source */ + charge_pump_source(fe, 1); + + msleep(1); + + /* return pll to normal operation */ + charge_pump_source(fe, 0); + + msleep(20); + + if (priv->id == TDA18271HDC2) { + /* set rfagc to normal speed mode */ + if (map->fm_rfn) + regs[R_EP3] &= ~0x04; + else + regs[R_EP3] |= 0x04; + ret = tda18271_write_regs(fe, R_EP3, 1); + } +fail: + return ret; +} + +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 tda18271c2_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 i, ret; + u8 tm_current, dc_over_dt, rf_tab; + s32 rfcal_comp, approx; + + /* power up */ + ret = tda18271_set_standby_mode(fe, 0, 0, 0); + if (tda_fail(ret)) + goto fail; + + /* 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 (tda_fail(i)) + return i; + + if ((0 == map[i].rf3) || (freq / 1000 < map[i].rf2)) { + approx = map[i].rf_a1 * (s32)(freq / 1000 - map[i].rf1) + + map[i].rf_b1 + rf_tab; + } else { + approx = map[i].rf_a2 * (s32)(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 * (s32)(tm_current - priv->tm_rfcal) / 1000; + + regs[R_EB14] = (unsigned char)(approx + rfcal_comp); + ret = tda18271_write_regs(fe, R_EB14, 1); +fail: + return ret; +} + +static int tda18271_por(struct dvb_frontend *fe) +{ + struct tda18271_priv *priv = fe->tuner_priv; + unsigned char *regs = priv->tda18271_regs; + int ret; + + /* power up detector 1 */ + regs[R_EB12] &= ~0x20; + ret = tda18271_write_regs(fe, R_EB12, 1); + if (tda_fail(ret)) + goto fail; + + regs[R_EB18] &= ~0x80; /* turn agc1 loop on */ + regs[R_EB18] &= ~0x03; /* set agc1_gain to 6 dB */ + ret = tda18271_write_regs(fe, R_EB18, 1); + if (tda_fail(ret)) + goto fail; + + regs[R_EB21] |= 0x03; /* set agc2_gain to -6 dB */ + + /* POR mode */ + ret = tda18271_set_standby_mode(fe, 1, 0, 0); + if (tda_fail(ret)) + goto fail; + + /* disable 1.5 MHz low pass filter */ + regs[R_EB23] &= ~0x04; /* forcelp_fc2_en = 0 */ + regs[R_EB23] &= ~0x02; /* XXX: lp_fc[2] = 0 */ + ret = tda18271_write_regs(fe, R_EB21, 3); +fail: + return ret; +} + +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 */ + tda18271_charge_pump_source(fe, TDA18271_MAIN_PLL, 1); + + /* cal pll charge pump source */ + tda18271_charge_pump_source(fe, TDA18271_CAL_PLL, 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_cal_pll(fe, N); + tda18271_write_regs(fe, R_CPD, 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 */ + tda18271_charge_pump_source(fe, TDA18271_MAIN_PLL, 0); + + /* normal operation for the cal pll */ + tda18271_charge_pump_source(fe, TDA18271_CAL_PLL, 0); + + msleep(10); /* 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, ret; + 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 */ + ret = tda18271_read_extended(fe); + if (tda_fail(ret)) + return ret; + + /* 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 */ + ret = tda18271_read_extended(fe); + if (tda_fail(ret)) + return ret; + + 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; + int ret; + + /* 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 */ + regs[R_EP4] &= ~0x1c; /* clear if level bits */ + + ret = tda18271_write_regs(fe, R_EP3, 2); + if (tda_fail(ret)) + goto fail; + + regs[R_EB18] &= ~0x03; /* set agc1_gain to 6 dB */ + ret = tda18271_write_regs(fe, R_EB18, 1); + if (tda_fail(ret)) + goto fail; + + 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 */ + + ret = tda18271_write_regs(fe, R_EB21, 3); +fail: + return ret; +} + +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; + s32 divisor, dividend; +#define RF1 0 +#define RF2 1 +#define RF3 2 + u32 rf_default[3]; + u32 rf_freq[3]; + s32 prog_cal[3]; + s32 prog_tab[3]; + + i = tda18271_lookup_rf_band(fe, &freq, NULL); + + if (tda_fail(i)) + 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]); + if (tda_fail(bcal)) + return bcal; + + tda18271_calc_rf_cal(fe, &rf_freq[rf]); + prog_tab[rf] = (s32)regs[R_EB14]; + + if (1 == bcal) + prog_cal[rf] = + (s32)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: + dividend = (prog_cal[RF2] - prog_tab[RF2] - + prog_cal[RF1] + prog_tab[RF1]); + divisor = (s32)(rf_freq[RF2] - rf_freq[RF1]) / 1000; + map[i].rf_a1 = (dividend / divisor); + map[i].rf2 = rf_freq[RF2] / 1000; + break; + case RF3: + dividend = (prog_cal[RF3] - prog_tab[RF3] - + prog_cal[RF2] + prog_tab[RF2]); + divisor = (s32)(rf_freq[RF3] - rf_freq[RF2]) / 1000; + map[i].rf_a2 = (dividend / divisor); + 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; + int ret; + + tda_info("tda18271: performing RF tracking filter calibration\n"); + + /* wait for die temperature stabilization */ + msleep(200); + + ret = tda18271_powerscan_init(fe); + if (tda_fail(ret)) + goto fail; + + /* rf band calibration */ + for (i = 0; priv->rf_cal_state[i].rfmax != 0; i++) { + ret = + tda18271_rf_tracking_filters_init(fe, 1000 * + priv->rf_cal_state[i].rfmax); + if (tda_fail(ret)) + goto fail; + } + + priv->tm_rfcal = tda18271_read_thermometer(fe); +fail: + return ret; +} + +/* ------------------------------------------------------------------ */ + +static int tda18271c2_rf_cal_init(struct dvb_frontend *fe) +{ + struct tda18271_priv *priv = fe->tuner_priv; + unsigned char *regs = priv->tda18271_regs; + int ret; + + /* 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; + + ret = tda18271_calc_rf_filter_curve(fe); + if (tda_fail(ret)) + goto fail; + + ret = tda18271_por(fe); + if (tda_fail(ret)) + goto fail; + + tda_info("tda18271: RF tracking filter calibration complete\n"); + + priv->cal_initialized = true; + goto end; +fail: + tda_info("tda18271: RF tracking filter calibration failed!\n"); +end: + return ret; +} + +static int tda18271c1_rf_tracking_filter_calibration(struct dvb_frontend *fe, + u32 freq, u32 bw) +{ + struct tda18271_priv *priv = fe->tuner_priv; + unsigned char *regs = priv->tda18271_regs; + int ret; + u32 N = 0; + + /* 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); + + ret = tda18271_write_regs(fe, R_EP3, 11); + if (tda_fail(ret)) + return ret; + + 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); /* pll locking */ + + 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); + + return 0; +} + +/* ------------------------------------------------------------------ */ + +static int tda18271_ir_cal_init(struct dvb_frontend *fe) +{ + struct tda18271_priv *priv = fe->tuner_priv; + unsigned char *regs = priv->tda18271_regs; + int ret; + + ret = tda18271_read_regs(fe); + if (tda_fail(ret)) + goto fail; + + /* test IR_CAL_OK to see if we need init */ + if ((regs[R_EP1] & 0x08) == 0) + ret = tda18271_init_regs(fe); +fail: + return ret; +} + +static int tda18271_init(struct dvb_frontend *fe) +{ + struct tda18271_priv *priv = fe->tuner_priv; + int ret; + + mutex_lock(&priv->lock); + + /* full power up */ + ret = tda18271_set_standby_mode(fe, 0, 0, 0); + if (tda_fail(ret)) + goto fail; + + /* initialization */ + ret = tda18271_ir_cal_init(fe); + if (tda_fail(ret)) + goto fail; + + if (priv->id == TDA18271HDC2) + tda18271c2_rf_cal_init(fe); +fail: + mutex_unlock(&priv->lock); + + return ret; +} + +static int tda18271_sleep(struct dvb_frontend *fe) +{ + struct tda18271_priv *priv = fe->tuner_priv; + int ret; + + mutex_lock(&priv->lock); + + /* enter standby mode, with required output features enabled */ + ret = tda18271_toggle_output(fe, 1); + + mutex_unlock(&priv->lock); + + return ret; +} + +/* ------------------------------------------------------------------ */ + +static int tda18271_agc(struct dvb_frontend *fe) +{ + struct tda18271_priv *priv = fe->tuner_priv; + int ret = 0; + + switch (priv->config) { + case 0: + /* no external agc configuration required */ + if (tda18271_debug & DBG_ADV) + tda_dbg("no agc configuration provided\n"); + break; + case 3: + /* switch with GPIO of saa713x */ + tda_dbg("invoking callback\n"); + if (fe->callback) + ret = fe->callback(priv->i2c_props.adap->algo_data, + DVB_FRONTEND_COMPONENT_TUNER, + TDA18271_CALLBACK_CMD_AGC_ENABLE, + priv->mode); + break; + case 1: + case 2: + default: + /* n/a - currently not supported */ + tda_err("unsupported configuration: %d\n", priv->config); + ret = -EINVAL; + break; + } + return ret; +} + +static int tda18271_tune(struct dvb_frontend *fe, + struct tda18271_std_map_item *map, u32 freq, u32 bw) +{ + struct tda18271_priv *priv = fe->tuner_priv; + int ret; + + tda_dbg("freq = %d, ifc = %d, bw = %d, agc_mode = %d, std = %d\n", + freq, map->if_freq, bw, map->agc_mode, map->std); + + ret = tda18271_agc(fe); + if (tda_fail(ret)) + tda_warn("failed to configure agc\n"); + + ret = tda18271_init(fe); + if (tda_fail(ret)) + goto fail; + + mutex_lock(&priv->lock); + + switch (priv->id) { + case TDA18271HDC1: + tda18271c1_rf_tracking_filter_calibration(fe, freq, bw); + break; + case TDA18271HDC2: + tda18271c2_rf_tracking_filters_correction(fe, freq); + break; + } + ret = tda18271_channel_configuration(fe, map, freq, bw); + + mutex_unlock(&priv->lock); +fail: + return ret; +} + +/* ------------------------------------------------------------------ */ + +static int tda18271_set_params(struct dvb_frontend *fe) +{ + struct dtv_frontend_properties *c = &fe->dtv_property_cache; + u32 delsys = c->delivery_system; + u32 bw = c->bandwidth_hz; + u32 freq = c->frequency; + struct tda18271_priv *priv = fe->tuner_priv; + struct tda18271_std_map *std_map = &priv->std; + struct tda18271_std_map_item *map; + int ret; + + priv->mode = TDA18271_DIGITAL; + + switch (delsys) { + case SYS_ATSC: + map = &std_map->atsc_6; + bw = 6000000; + break; + case SYS_ISDBT: + case SYS_DVBT: + case SYS_DVBT2: + if (bw <= 6000000) { + map = &std_map->dvbt_6; + } else if (bw <= 7000000) { + map = &std_map->dvbt_7; + } else { + map = &std_map->dvbt_8; + } + break; + case SYS_DVBC_ANNEX_B: + bw = 6000000; + /* falltrough */ + case SYS_DVBC_ANNEX_A: + case SYS_DVBC_ANNEX_C: + if (bw <= 6000000) { + map = &std_map->qam_6; + } else if (bw <= 7000000) { + map = &std_map->qam_7; + } else { + map = &std_map->qam_8; + } + break; + default: + 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, map, freq, bw); + + if (tda_fail(ret)) + goto fail; + + priv->if_freq = map->if_freq; + priv->frequency = freq; + priv->bandwidth = bw; +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; + struct tda18271_std_map_item *map; + char *mode; + int ret; + u32 freq = params->frequency * 125 * + ((params->mode == V4L2_TUNER_RADIO) ? 1 : 1000) / 2; + + priv->mode = TDA18271_ANALOG; + + if (params->mode == V4L2_TUNER_RADIO) { + map = &std_map->fm_radio; + mode = "fm"; + } else if (params->std & V4L2_STD_MN) { + map = &std_map->atv_mn; + mode = "MN"; + } else if (params->std & V4L2_STD_B) { + map = &std_map->atv_b; + mode = "B"; + } else if (params->std & V4L2_STD_GH) { + map = &std_map->atv_gh; + mode = "GH"; + } else if (params->std & V4L2_STD_PAL_I) { + map = &std_map->atv_i; + mode = "I"; + } else if (params->std & V4L2_STD_DK) { + map = &std_map->atv_dk; + mode = "DK"; + } else if (params->std & V4L2_STD_SECAM_L) { + map = &std_map->atv_l; + mode = "L"; + } else if (params->std & V4L2_STD_SECAM_LC) { + map = &std_map->atv_lc; + mode = "L'"; + } else { + map = &std_map->atv_i; + mode = "xx"; + } + + tda_dbg("setting tda18271 to system %s\n", mode); + + ret = tda18271_tune(fe, map, freq, 0); + + if (tda_fail(ret)) + goto fail; + + priv->if_freq = map->if_freq; + priv->frequency = freq; + priv->bandwidth = 0; +fail: + return ret; +} + +static int tda18271_release(struct dvb_frontend *fe) +{ + struct tda18271_priv *priv = fe->tuner_priv; + + mutex_lock(&tda18271_list_mutex); + + if (priv) + hybrid_tuner_release_state(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; +} + +static int tda18271_get_if_frequency(struct dvb_frontend *fe, u32 *frequency) +{ + struct tda18271_priv *priv = fe->tuner_priv; + *frequency = (u32)priv->if_freq * 1000; + return 0; +} + +/* ------------------------------------------------------------------ */ + +#define tda18271_update_std(std_cfg, name) do { \ + if (map->std_cfg.if_freq + \ + map->std_cfg.agc_mode + map->std_cfg.std + \ + map->std_cfg.if_lvl + map->std_cfg.rfagc_top > 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, agc_mode = %d, std = %d, " \ + "if_lvl = %d, rfagc_top = 0x%02x\n", \ + name, std->std_cfg.if_freq, \ + std->std_cfg.agc_mode, std->std_cfg.std, \ + std->std_cfg.if_lvl, std->std_cfg.rfagc_top); \ + } 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, "atv b "); + tda18271_dump_std_item(atv_dk, "atv dk"); + tda18271_dump_std_item(atv_gh, "atv gh"); + tda18271_dump_std_item(atv_i, "atv i "); + tda18271_dump_std_item(atv_l, "atv l "); + tda18271_dump_std_item(atv_lc, "atv 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; + + mutex_lock(&priv->lock); + ret = tda18271_read_regs(fe); + mutex_unlock(&priv->lock); + + if (ret) { + tda_info("Error reading device ID @ %d-%04x, bailing out.\n", + i2c_adapter_id(priv->i2c_props.adap), + priv->i2c_props.addr); + return -EIO; + } + + switch (regs[R_ID] & 0x7f) { + case 3: + name = "TDA18271HD/C1"; + priv->id = TDA18271HDC1; + break; + case 4: + name = "TDA18271HD/C2"; + priv->id = TDA18271HDC2; + break; + default: + tda_info("Unknown device (%i) detected @ %d-%04x, device not supported.\n", + regs[R_ID], i2c_adapter_id(priv->i2c_props.adap), + priv->i2c_props.addr); + return -EINVAL; + } + + tda_info("%s detected @ %d-%04x\n", name, + i2c_adapter_id(priv->i2c_props.adap), priv->i2c_props.addr); + + return 0; +} + +static int tda18271_setup_configuration(struct dvb_frontend *fe, + struct tda18271_config *cfg) +{ + struct tda18271_priv *priv = fe->tuner_priv; + + priv->gate = (cfg) ? cfg->gate : TDA18271_GATE_AUTO; + priv->role = (cfg) ? cfg->role : TDA18271_MASTER; + priv->config = (cfg) ? cfg->config : 0; + priv->small_i2c = (cfg) ? + cfg->small_i2c : TDA18271_39_BYTE_CHUNK_INIT; + priv->output_opt = (cfg) ? + cfg->output_opt : TDA18271_OUTPUT_LT_XT_ON; + + return 0; +} + +static inline int tda18271_need_cal_on_startup(struct tda18271_config *cfg) +{ + /* tda18271_cal_on_startup == -1 when cal module option is unset */ + return ((tda18271_cal_on_startup == -1) ? + /* honor configuration setting */ + ((cfg) && (cfg->rf_cal_on_startup)) : + /* module option overrides configuration setting */ + (tda18271_cal_on_startup)) ? 1 : 0; +} + +static int tda18271_set_config(struct dvb_frontend *fe, void *priv_cfg) +{ + struct tda18271_config *cfg = (struct tda18271_config *) priv_cfg; + + tda18271_setup_configuration(fe, cfg); + + if (tda18271_need_cal_on_startup(cfg)) + tda18271_init(fe); + + /* override default std map with values in config struct */ + if ((cfg) && (cfg->std_map)) + tda18271_update_std_map(fe, cfg->std_map); + + return 0; +} + +static const 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, + .set_config = tda18271_set_config, + .get_frequency = tda18271_get_frequency, + .get_bandwidth = tda18271_get_bandwidth, + .get_if_frequency = tda18271_get_if_frequency, +}; + +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 instance, ret; + + mutex_lock(&tda18271_list_mutex); + + instance = hybrid_tuner_request_state(struct tda18271_priv, priv, + hybrid_tuner_instance_list, + i2c, addr, "tda18271"); + switch (instance) { + case 0: + goto fail; + case 1: + /* new tuner instance */ + fe->tuner_priv = priv; + + tda18271_setup_configuration(fe, cfg); + + priv->cal_initialized = false; + mutex_init(&priv->lock); + + ret = tda18271_get_id(fe); + if (tda_fail(ret)) + goto fail; + + ret = tda18271_assign_map_layout(fe); + if (tda_fail(ret)) + goto fail; + + /* if delay_cal is set, delay IR & RF calibration until init() + * module option 'cal' overrides this delay */ + if ((cfg->delay_cal) && (!tda18271_need_cal_on_startup(cfg))) + break; + + mutex_lock(&priv->lock); + tda18271_init_regs(fe); + + if ((tda18271_need_cal_on_startup(cfg)) && + (priv->id == TDA18271HDC2)) + tda18271c2_rf_cal_init(fe); + + /* enter standby mode, with required output features enabled */ + ret = tda18271_toggle_output(fe, 1); + tda_fail(ret); + + mutex_unlock(&priv->lock); + break; + default: + /* existing tuner instance */ + fe->tuner_priv = priv; + + /* allow dvb driver to override configuration settings */ + if (cfg) { + if (cfg->gate != TDA18271_GATE_ANALOG) + priv->gate = cfg->gate; + if (cfg->role) + priv->role = cfg->role; + if (cfg->config) + priv->config = cfg->config; + if (cfg->small_i2c) + priv->small_i2c = cfg->small_i2c; + if (cfg->output_opt) + priv->output_opt = cfg->output_opt; + if (cfg->std_map) + tda18271_update_std_map(fe, cfg->std_map); + } + if (tda18271_need_cal_on_startup(cfg)) + tda18271_init(fe); + break; + } + + /* 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 | DBG_ADV)) + 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("0.4"); + +/* + * Overrides for Emacs so that we follow Linus's tabbing style. + * --------------------------------------------------------------------------- + * Local variables: + * c-basic-offset: 8 + * End: + */ |