--- /dev/null
+/*
+ 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"
+#include "tda8290.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 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;
+ /* 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_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 = 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");
Code Review / kvmfornfv.git / blobdiff