1344 строки
32 KiB
C
1344 строки
32 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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tda18271-fe.c - driver for the Philips / NXP TDA18271 silicon tuner
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Copyright (C) 2007, 2008 Michael Krufky <mkrufky@linuxtv.org>
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*/
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#include "tda18271-priv.h"
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#include "tda8290.h"
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#include <linux/delay.h>
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#include <linux/videodev2.h>
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int tda18271_debug;
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module_param_named(debug, tda18271_debug, int, 0644);
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MODULE_PARM_DESC(debug, "set debug level (info=1, map=2, reg=4, adv=8, cal=16 (or-able))");
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static int tda18271_cal_on_startup = -1;
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module_param_named(cal, tda18271_cal_on_startup, int, 0644);
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MODULE_PARM_DESC(cal, "perform RF tracking filter calibration on startup");
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static DEFINE_MUTEX(tda18271_list_mutex);
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static LIST_HEAD(hybrid_tuner_instance_list);
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/*---------------------------------------------------------------------*/
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static int tda18271_toggle_output(struct dvb_frontend *fe, int standby)
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{
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struct tda18271_priv *priv = fe->tuner_priv;
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int ret = tda18271_set_standby_mode(fe, standby ? 1 : 0,
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priv->output_opt & TDA18271_OUTPUT_LT_OFF ? 1 : 0,
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priv->output_opt & TDA18271_OUTPUT_XT_OFF ? 1 : 0);
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if (tda_fail(ret))
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goto fail;
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tda_dbg("%s mode: xtal oscillator %s, slave tuner loop through %s\n",
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standby ? "standby" : "active",
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priv->output_opt & TDA18271_OUTPUT_XT_OFF ? "off" : "on",
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priv->output_opt & TDA18271_OUTPUT_LT_OFF ? "off" : "on");
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fail:
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return ret;
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}
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/*---------------------------------------------------------------------*/
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static inline int charge_pump_source(struct dvb_frontend *fe, int force)
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{
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struct tda18271_priv *priv = fe->tuner_priv;
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return tda18271_charge_pump_source(fe,
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(priv->role == TDA18271_SLAVE) ?
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TDA18271_CAL_PLL :
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TDA18271_MAIN_PLL, force);
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}
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static inline void tda18271_set_if_notch(struct dvb_frontend *fe)
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{
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struct tda18271_priv *priv = fe->tuner_priv;
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unsigned char *regs = priv->tda18271_regs;
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switch (priv->mode) {
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case TDA18271_ANALOG:
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regs[R_MPD] &= ~0x80; /* IF notch = 0 */
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break;
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case TDA18271_DIGITAL:
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regs[R_MPD] |= 0x80; /* IF notch = 1 */
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break;
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}
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}
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static int tda18271_channel_configuration(struct dvb_frontend *fe,
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struct tda18271_std_map_item *map,
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u32 freq, u32 bw)
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{
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struct tda18271_priv *priv = fe->tuner_priv;
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unsigned char *regs = priv->tda18271_regs;
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int ret;
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u32 N;
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/* update TV broadcast parameters */
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/* set standard */
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regs[R_EP3] &= ~0x1f; /* clear std bits */
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regs[R_EP3] |= (map->agc_mode << 3) | map->std;
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if (priv->id == TDA18271HDC2) {
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/* set rfagc to high speed mode */
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regs[R_EP3] &= ~0x04;
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}
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/* set cal mode to normal */
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regs[R_EP4] &= ~0x03;
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/* update IF output level */
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regs[R_EP4] &= ~0x1c; /* clear if level bits */
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regs[R_EP4] |= (map->if_lvl << 2);
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/* update FM_RFn */
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regs[R_EP4] &= ~0x80;
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regs[R_EP4] |= map->fm_rfn << 7;
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/* update rf top / if top */
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regs[R_EB22] = 0x00;
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regs[R_EB22] |= map->rfagc_top;
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ret = tda18271_write_regs(fe, R_EB22, 1);
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if (tda_fail(ret))
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goto fail;
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/* --------------------------------------------------------------- */
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/* disable Power Level Indicator */
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regs[R_EP1] |= 0x40;
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/* make sure thermometer is off */
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regs[R_TM] &= ~0x10;
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/* frequency dependent parameters */
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tda18271_calc_ir_measure(fe, &freq);
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tda18271_calc_bp_filter(fe, &freq);
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tda18271_calc_rf_band(fe, &freq);
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tda18271_calc_gain_taper(fe, &freq);
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/* --------------------------------------------------------------- */
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/* dual tuner and agc1 extra configuration */
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switch (priv->role) {
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case TDA18271_MASTER:
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regs[R_EB1] |= 0x04; /* main vco */
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break;
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case TDA18271_SLAVE:
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regs[R_EB1] &= ~0x04; /* cal vco */
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break;
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}
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/* agc1 always active */
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regs[R_EB1] &= ~0x02;
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/* agc1 has priority on agc2 */
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regs[R_EB1] &= ~0x01;
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ret = tda18271_write_regs(fe, R_EB1, 1);
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if (tda_fail(ret))
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goto fail;
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/* --------------------------------------------------------------- */
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N = map->if_freq * 1000 + freq;
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switch (priv->role) {
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case TDA18271_MASTER:
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tda18271_calc_main_pll(fe, N);
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tda18271_set_if_notch(fe);
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tda18271_write_regs(fe, R_MPD, 4);
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break;
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case TDA18271_SLAVE:
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tda18271_calc_cal_pll(fe, N);
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tda18271_write_regs(fe, R_CPD, 4);
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regs[R_MPD] = regs[R_CPD] & 0x7f;
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tda18271_set_if_notch(fe);
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tda18271_write_regs(fe, R_MPD, 1);
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break;
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}
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ret = tda18271_write_regs(fe, R_TM, 7);
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if (tda_fail(ret))
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goto fail;
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/* force charge pump source */
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charge_pump_source(fe, 1);
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msleep(1);
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/* return pll to normal operation */
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charge_pump_source(fe, 0);
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msleep(20);
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if (priv->id == TDA18271HDC2) {
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/* set rfagc to normal speed mode */
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if (map->fm_rfn)
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regs[R_EP3] &= ~0x04;
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else
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regs[R_EP3] |= 0x04;
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ret = tda18271_write_regs(fe, R_EP3, 1);
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}
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fail:
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return ret;
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}
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static int tda18271_read_thermometer(struct dvb_frontend *fe)
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{
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struct tda18271_priv *priv = fe->tuner_priv;
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unsigned char *regs = priv->tda18271_regs;
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int tm;
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/* switch thermometer on */
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regs[R_TM] |= 0x10;
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tda18271_write_regs(fe, R_TM, 1);
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/* read thermometer info */
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tda18271_read_regs(fe);
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if ((((regs[R_TM] & 0x0f) == 0x00) && ((regs[R_TM] & 0x20) == 0x20)) ||
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(((regs[R_TM] & 0x0f) == 0x08) && ((regs[R_TM] & 0x20) == 0x00))) {
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if ((regs[R_TM] & 0x20) == 0x20)
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regs[R_TM] &= ~0x20;
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else
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regs[R_TM] |= 0x20;
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tda18271_write_regs(fe, R_TM, 1);
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msleep(10); /* temperature sensing */
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/* read thermometer info */
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tda18271_read_regs(fe);
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}
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tm = tda18271_lookup_thermometer(fe);
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/* switch thermometer off */
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regs[R_TM] &= ~0x10;
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tda18271_write_regs(fe, R_TM, 1);
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/* set CAL mode to normal */
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regs[R_EP4] &= ~0x03;
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tda18271_write_regs(fe, R_EP4, 1);
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return tm;
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}
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/* ------------------------------------------------------------------ */
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static int tda18271c2_rf_tracking_filters_correction(struct dvb_frontend *fe,
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u32 freq)
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{
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struct tda18271_priv *priv = fe->tuner_priv;
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struct tda18271_rf_tracking_filter_cal *map = priv->rf_cal_state;
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unsigned char *regs = priv->tda18271_regs;
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int i, ret;
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u8 tm_current, dc_over_dt, rf_tab;
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s32 rfcal_comp, approx;
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/* power up */
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ret = tda18271_set_standby_mode(fe, 0, 0, 0);
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if (tda_fail(ret))
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goto fail;
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/* read die current temperature */
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tm_current = tda18271_read_thermometer(fe);
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/* frequency dependent parameters */
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tda18271_calc_rf_cal(fe, &freq);
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rf_tab = regs[R_EB14];
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i = tda18271_lookup_rf_band(fe, &freq, NULL);
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if (tda_fail(i))
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return i;
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if ((0 == map[i].rf3) || (freq / 1000 < map[i].rf2)) {
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approx = map[i].rf_a1 * (s32)(freq / 1000 - map[i].rf1) +
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map[i].rf_b1 + rf_tab;
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} else {
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approx = map[i].rf_a2 * (s32)(freq / 1000 - map[i].rf2) +
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map[i].rf_b2 + rf_tab;
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}
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if (approx < 0)
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approx = 0;
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if (approx > 255)
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approx = 255;
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tda18271_lookup_map(fe, RF_CAL_DC_OVER_DT, &freq, &dc_over_dt);
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/* calculate temperature compensation */
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rfcal_comp = dc_over_dt * (s32)(tm_current - priv->tm_rfcal) / 1000;
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regs[R_EB14] = (unsigned char)(approx + rfcal_comp);
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ret = tda18271_write_regs(fe, R_EB14, 1);
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fail:
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return ret;
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}
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static int tda18271_por(struct dvb_frontend *fe)
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{
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struct tda18271_priv *priv = fe->tuner_priv;
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unsigned char *regs = priv->tda18271_regs;
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int ret;
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/* power up detector 1 */
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regs[R_EB12] &= ~0x20;
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ret = tda18271_write_regs(fe, R_EB12, 1);
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if (tda_fail(ret))
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goto fail;
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regs[R_EB18] &= ~0x80; /* turn agc1 loop on */
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regs[R_EB18] &= ~0x03; /* set agc1_gain to 6 dB */
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ret = tda18271_write_regs(fe, R_EB18, 1);
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if (tda_fail(ret))
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goto fail;
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regs[R_EB21] |= 0x03; /* set agc2_gain to -6 dB */
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/* POR mode */
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ret = tda18271_set_standby_mode(fe, 1, 0, 0);
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if (tda_fail(ret))
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goto fail;
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/* disable 1.5 MHz low pass filter */
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regs[R_EB23] &= ~0x04; /* forcelp_fc2_en = 0 */
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regs[R_EB23] &= ~0x02; /* XXX: lp_fc[2] = 0 */
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ret = tda18271_write_regs(fe, R_EB21, 3);
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fail:
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return ret;
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}
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static int tda18271_calibrate_rf(struct dvb_frontend *fe, u32 freq)
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{
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struct tda18271_priv *priv = fe->tuner_priv;
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unsigned char *regs = priv->tda18271_regs;
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u32 N;
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/* set CAL mode to normal */
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regs[R_EP4] &= ~0x03;
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tda18271_write_regs(fe, R_EP4, 1);
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/* switch off agc1 */
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regs[R_EP3] |= 0x40; /* sm_lt = 1 */
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regs[R_EB18] |= 0x03; /* set agc1_gain to 15 dB */
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tda18271_write_regs(fe, R_EB18, 1);
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/* frequency dependent parameters */
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tda18271_calc_bp_filter(fe, &freq);
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tda18271_calc_gain_taper(fe, &freq);
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tda18271_calc_rf_band(fe, &freq);
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tda18271_calc_km(fe, &freq);
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tda18271_write_regs(fe, R_EP1, 3);
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tda18271_write_regs(fe, R_EB13, 1);
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/* main pll charge pump source */
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tda18271_charge_pump_source(fe, TDA18271_MAIN_PLL, 1);
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/* cal pll charge pump source */
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tda18271_charge_pump_source(fe, TDA18271_CAL_PLL, 1);
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/* force dcdc converter to 0 V */
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regs[R_EB14] = 0x00;
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tda18271_write_regs(fe, R_EB14, 1);
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/* disable plls lock */
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regs[R_EB20] &= ~0x20;
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tda18271_write_regs(fe, R_EB20, 1);
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/* set CAL mode to RF tracking filter calibration */
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regs[R_EP4] |= 0x03;
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tda18271_write_regs(fe, R_EP4, 2);
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/* --------------------------------------------------------------- */
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/* set the internal calibration signal */
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N = freq;
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tda18271_calc_cal_pll(fe, N);
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tda18271_write_regs(fe, R_CPD, 4);
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/* downconvert internal calibration */
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N += 1000000;
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tda18271_calc_main_pll(fe, N);
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tda18271_write_regs(fe, R_MPD, 4);
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msleep(5);
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tda18271_write_regs(fe, R_EP2, 1);
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tda18271_write_regs(fe, R_EP1, 1);
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tda18271_write_regs(fe, R_EP2, 1);
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tda18271_write_regs(fe, R_EP1, 1);
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/* --------------------------------------------------------------- */
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/* normal operation for the main pll */
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tda18271_charge_pump_source(fe, TDA18271_MAIN_PLL, 0);
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/* normal operation for the cal pll */
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tda18271_charge_pump_source(fe, TDA18271_CAL_PLL, 0);
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msleep(10); /* plls locking */
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/* launch the rf tracking filters calibration */
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regs[R_EB20] |= 0x20;
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tda18271_write_regs(fe, R_EB20, 1);
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msleep(60); /* calibration */
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/* --------------------------------------------------------------- */
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/* set CAL mode to normal */
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regs[R_EP4] &= ~0x03;
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/* switch on agc1 */
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regs[R_EP3] &= ~0x40; /* sm_lt = 0 */
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regs[R_EB18] &= ~0x03; /* set agc1_gain to 6 dB */
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tda18271_write_regs(fe, R_EB18, 1);
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tda18271_write_regs(fe, R_EP3, 2);
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/* synchronization */
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tda18271_write_regs(fe, R_EP1, 1);
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/* get calibration result */
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tda18271_read_extended(fe);
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return regs[R_EB14];
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}
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static int tda18271_powerscan(struct dvb_frontend *fe,
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u32 *freq_in, u32 *freq_out)
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{
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struct tda18271_priv *priv = fe->tuner_priv;
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unsigned char *regs = priv->tda18271_regs;
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int sgn, bcal, count, wait, ret;
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u8 cid_target;
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u16 count_limit;
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u32 freq;
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freq = *freq_in;
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tda18271_calc_rf_band(fe, &freq);
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tda18271_calc_rf_cal(fe, &freq);
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tda18271_calc_gain_taper(fe, &freq);
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tda18271_lookup_cid_target(fe, &freq, &cid_target, &count_limit);
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tda18271_write_regs(fe, R_EP2, 1);
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tda18271_write_regs(fe, R_EB14, 1);
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/* downconvert frequency */
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freq += 1000000;
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tda18271_calc_main_pll(fe, freq);
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tda18271_write_regs(fe, R_MPD, 4);
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msleep(5); /* pll locking */
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/* detection mode */
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regs[R_EP4] &= ~0x03;
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regs[R_EP4] |= 0x01;
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tda18271_write_regs(fe, R_EP4, 1);
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/* launch power detection measurement */
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tda18271_write_regs(fe, R_EP2, 1);
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/* read power detection info, stored in EB10 */
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ret = tda18271_read_extended(fe);
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if (tda_fail(ret))
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return ret;
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/* algorithm initialization */
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sgn = 1;
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*freq_out = *freq_in;
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bcal = 0;
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count = 0;
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wait = false;
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while ((regs[R_EB10] & 0x3f) < cid_target) {
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/* downconvert updated freq to 1 MHz */
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freq = *freq_in + (sgn * count) + 1000000;
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tda18271_calc_main_pll(fe, freq);
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tda18271_write_regs(fe, R_MPD, 4);
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if (wait) {
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msleep(5); /* pll locking */
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wait = false;
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} else
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udelay(100); /* pll locking */
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/* launch power detection measurement */
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tda18271_write_regs(fe, R_EP2, 1);
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/* read power detection info, stored in EB10 */
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ret = tda18271_read_extended(fe);
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if (tda_fail(ret))
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return ret;
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count += 200;
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if (count <= count_limit)
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continue;
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if (sgn <= 0)
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break;
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|
|
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("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("RF tracking filter calibration complete\n");
|
|
|
|
priv->cal_initialized = true;
|
|
goto end;
|
|
fail:
|
|
tda_info("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 TDA8290_LNA_OFF:
|
|
/* no external agc configuration required */
|
|
if (tda18271_debug & DBG_ADV)
|
|
tda_dbg("no agc configuration provided\n");
|
|
break;
|
|
case TDA8290_LNA_ON_BRIDGE:
|
|
/* 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 TDA8290_LNA_GP0_HIGH_ON:
|
|
case TDA8290_LNA_GP0_HIGH_OFF:
|
|
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;
|
|
/* fall through */
|
|
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 void 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;
|
|
}
|
|
|
|
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_7, "qam 7 ");
|
|
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_7, "qam 7");
|
|
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_hz = 45 * MHz,
|
|
.frequency_max_hz = 864 * MHz,
|
|
.frequency_step_hz = 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");
|