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linux/drivers/media/tuners/tda18271-fe.c
Thomas Gleixner 74ba9207e1 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 61 
Based on 1 normalized pattern(s):

  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

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-or-later

has been chosen to replace the boilerplate/reference in 441 file(s).

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Michael Ellerman <mpe@ellerman.id.au> (powerpc)
Reviewed-by: Richard Fontana <rfontana@redhat.com>
Reviewed-by: Allison Randal <allison@lohutok.net>
Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190520071858.739733335@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-24 17:36:45 +02:00

1344 lines
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// SPDX-License-Identifier: GPL-2.0-or-later
/*
tda18271-fe.c - driver for the Philips / NXP TDA18271 silicon tuner
Copyright (C) 2007, 2008 Michael Krufky <mkrufky@linuxtv.org>
*/
#include "tda18271-priv.h"
#include "tda8290.h"
#include <linux/delay.h>
#include <linux/videodev2.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 through %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("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");
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