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path: root/drivers/media/dvb/frontends/tda18271-fe.c
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Diffstat (limited to 'drivers/media/dvb/frontends/tda18271-fe.c')
-rw-r--r--drivers/media/dvb/frontends/tda18271-fe.c1225
1 files changed, 1225 insertions, 0 deletions
diff --git a/drivers/media/dvb/frontends/tda18271-fe.c b/drivers/media/dvb/frontends/tda18271-fe.c
new file mode 100644
index 00000000000..dfe72aaec38
--- /dev/null
+++ b/drivers/media/dvb/frontends/tda18271-fe.c
@@ -0,0 +1,1225 @@
+/*
+ tda18271-fe.c - driver for the Philips / NXP TDA18271 silicon tuner
+
+ Copyright (C) 2007, 2008 Michael Krufky <mkrufky@linuxtv.org>
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+*/
+
+#include <linux/delay.h>
+#include <linux/videodev2.h>
+#include "tda18271-priv.h"
+
+int tda18271_debug;
+module_param_named(debug, tda18271_debug, int, 0644);
+MODULE_PARM_DESC(debug, "set debug level "
+ "(info=1, map=2, reg=4, adv=8, cal=16 (or-able))");
+
+static int tda18271_cal_on_startup;
+module_param_named(cal, tda18271_cal_on_startup, int, 0644);
+MODULE_PARM_DESC(cal, "perform RF tracking filter calibration on startup");
+
+static LIST_HEAD(tda18271_list);
+static DEFINE_MUTEX(tda18271_list_mutex);
+
+/*---------------------------------------------------------------------*/
+
+static int tda18271_ir_cal_init(struct dvb_frontend *fe)
+{
+ struct tda18271_priv *priv = fe->tuner_priv;
+ unsigned char *regs = priv->tda18271_regs;
+
+ tda18271_read_regs(fe);
+
+ /* test IR_CAL_OK to see if we need init */
+ if ((regs[R_EP1] & 0x08) == 0)
+ tda18271_init_regs(fe);
+
+ return 0;
+}
+
+/* ------------------------------------------------------------------ */
+
+static int tda18271_channel_configuration(struct dvb_frontend *fe,
+ u32 ifc, u32 freq, u32 bw, u8 std,
+ int radio)
+{
+ struct tda18271_priv *priv = fe->tuner_priv;
+ unsigned char *regs = priv->tda18271_regs;
+ u32 N;
+
+ /* update TV broadcast parameters */
+
+ /* set standard */
+ regs[R_EP3] &= ~0x1f; /* clear std bits */
+ regs[R_EP3] |= std;
+
+ /* set cal mode to normal */
+ regs[R_EP4] &= ~0x03;
+
+ /* update IF output level & IF notch frequency */
+ regs[R_EP4] &= ~0x1c; /* clear if level bits */
+
+ switch (priv->mode) {
+ case TDA18271_ANALOG:
+ regs[R_MPD] &= ~0x80; /* IF notch = 0 */
+ break;
+ case TDA18271_DIGITAL:
+ regs[R_EP4] |= 0x04; /* IF level = 1 */
+ regs[R_MPD] |= 0x80; /* IF notch = 1 */
+ break;
+ }
+
+ if (radio)
+ regs[R_EP4] |= 0x80;
+ else
+ regs[R_EP4] &= ~0x80;
+
+ /* update RF_TOP / IF_TOP */
+ switch (priv->mode) {
+ case TDA18271_ANALOG:
+ regs[R_EB22] = 0x2c;
+ break;
+ case TDA18271_DIGITAL:
+ regs[R_EB22] = 0x37;
+ break;
+ }
+ tda18271_write_regs(fe, R_EB22, 1);
+
+ /* --------------------------------------------------------------- */
+
+ /* disable Power Level Indicator */
+ regs[R_EP1] |= 0x40;
+
+ /* frequency dependent parameters */
+
+ tda18271_calc_ir_measure(fe, &freq);
+
+ tda18271_calc_bp_filter(fe, &freq);
+
+ tda18271_calc_rf_band(fe, &freq);
+
+ tda18271_calc_gain_taper(fe, &freq);
+
+ /* --------------------------------------------------------------- */
+
+ /* dual tuner and agc1 extra configuration */
+
+ /* main vco when Master, cal vco when slave */
+ regs[R_EB1] |= 0x04; /* FIXME: assumes master */
+
+ /* agc1 always active */
+ regs[R_EB1] &= ~0x02;
+
+ /* agc1 has priority on agc2 */
+ regs[R_EB1] &= ~0x01;
+
+ tda18271_write_regs(fe, R_EB1, 1);
+
+ /* --------------------------------------------------------------- */
+
+ N = freq + ifc;
+
+ /* FIXME: assumes master */
+ tda18271_calc_main_pll(fe, N);
+ tda18271_write_regs(fe, R_MPD, 4);
+
+ tda18271_write_regs(fe, R_TM, 7);
+
+ /* main pll charge pump source */
+ regs[R_EB4] |= 0x20;
+ tda18271_write_regs(fe, R_EB4, 1);
+
+ msleep(1);
+
+ /* normal operation for the main pll */
+ regs[R_EB4] &= ~0x20;
+ tda18271_write_regs(fe, R_EB4, 1);
+
+ msleep(5);
+
+ return 0;
+}
+
+static int tda18271_read_thermometer(struct dvb_frontend *fe)
+{
+ struct tda18271_priv *priv = fe->tuner_priv;
+ unsigned char *regs = priv->tda18271_regs;
+ int tm;
+
+ /* switch thermometer on */
+ regs[R_TM] |= 0x10;
+ tda18271_write_regs(fe, R_TM, 1);
+
+ /* read thermometer info */
+ tda18271_read_regs(fe);
+
+ if ((((regs[R_TM] & 0x0f) == 0x00) && ((regs[R_TM] & 0x20) == 0x20)) ||
+ (((regs[R_TM] & 0x0f) == 0x08) && ((regs[R_TM] & 0x20) == 0x00))) {
+
+ if ((regs[R_TM] & 0x20) == 0x20)
+ regs[R_TM] &= ~0x20;
+ else
+ regs[R_TM] |= 0x20;
+
+ tda18271_write_regs(fe, R_TM, 1);
+
+ msleep(10); /* temperature sensing */
+
+ /* read thermometer info */
+ tda18271_read_regs(fe);
+ }
+
+ tm = tda18271_lookup_thermometer(fe);
+
+ /* switch thermometer off */
+ regs[R_TM] &= ~0x10;
+ tda18271_write_regs(fe, R_TM, 1);
+
+ /* set CAL mode to normal */
+ regs[R_EP4] &= ~0x03;
+ tda18271_write_regs(fe, R_EP4, 1);
+
+ return tm;
+}
+
+static int tda18271_rf_tracking_filters_correction(struct dvb_frontend *fe,
+ u32 freq)
+{
+ struct tda18271_priv *priv = fe->tuner_priv;
+ struct tda18271_rf_tracking_filter_cal *map = priv->rf_cal_state;
+ unsigned char *regs = priv->tda18271_regs;
+ int tm_current, rfcal_comp, approx, i;
+ u8 dc_over_dt, rf_tab;
+
+ /* power up */
+ tda18271_set_standby_mode(fe, 0, 0, 0);
+
+ /* read die current temperature */
+ tm_current = tda18271_read_thermometer(fe);
+
+ /* frequency dependent parameters */
+
+ tda18271_calc_rf_cal(fe, &freq);
+ rf_tab = regs[R_EB14];
+
+ i = tda18271_lookup_rf_band(fe, &freq, NULL);
+ if (i < 0)
+ return -EINVAL;
+
+ if ((0 == map[i].rf3) || (freq / 1000 < map[i].rf2)) {
+ approx = map[i].rf_a1 *
+ (freq / 1000 - map[i].rf1) + map[i].rf_b1 + rf_tab;
+ } else {
+ approx = map[i].rf_a2 *
+ (freq / 1000 - map[i].rf2) + map[i].rf_b2 + rf_tab;
+ }
+
+ if (approx < 0)
+ approx = 0;
+ if (approx > 255)
+ approx = 255;
+
+ tda18271_lookup_map(fe, RF_CAL_DC_OVER_DT, &freq, &dc_over_dt);
+
+ /* calculate temperature compensation */
+ rfcal_comp = dc_over_dt * (tm_current - priv->tm_rfcal);
+
+ regs[R_EB14] = approx + rfcal_comp;
+ tda18271_write_regs(fe, R_EB14, 1);
+
+ return 0;
+}
+
+static int tda18271_por(struct dvb_frontend *fe)
+{
+ struct tda18271_priv *priv = fe->tuner_priv;
+ unsigned char *regs = priv->tda18271_regs;
+
+ /* power up detector 1 */
+ regs[R_EB12] &= ~0x20;
+ tda18271_write_regs(fe, R_EB12, 1);
+
+ regs[R_EB18] &= ~0x80; /* turn agc1 loop on */
+ regs[R_EB18] &= ~0x03; /* set agc1_gain to 6 dB */
+ tda18271_write_regs(fe, R_EB18, 1);
+
+ regs[R_EB21] |= 0x03; /* set agc2_gain to -6 dB */
+
+ /* POR mode */
+ tda18271_set_standby_mode(fe, 1, 0, 0);
+
+ /* disable 1.5 MHz low pass filter */
+ regs[R_EB23] &= ~0x04; /* forcelp_fc2_en = 0 */
+ regs[R_EB23] &= ~0x02; /* XXX: lp_fc[2] = 0 */
+ tda18271_write_regs(fe, R_EB21, 3);
+
+ return 0;
+}
+
+static int tda18271_calibrate_rf(struct dvb_frontend *fe, u32 freq)
+{
+ struct tda18271_priv *priv = fe->tuner_priv;
+ unsigned char *regs = priv->tda18271_regs;
+ u32 N;
+
+ /* set CAL mode to normal */
+ regs[R_EP4] &= ~0x03;
+ tda18271_write_regs(fe, R_EP4, 1);
+
+ /* switch off agc1 */
+ regs[R_EP3] |= 0x40; /* sm_lt = 1 */
+
+ regs[R_EB18] |= 0x03; /* set agc1_gain to 15 dB */
+ tda18271_write_regs(fe, R_EB18, 1);
+
+ /* frequency dependent parameters */
+
+ tda18271_calc_bp_filter(fe, &freq);
+ tda18271_calc_gain_taper(fe, &freq);
+ tda18271_calc_rf_band(fe, &freq);
+ tda18271_calc_km(fe, &freq);
+
+ tda18271_write_regs(fe, R_EP1, 3);
+ tda18271_write_regs(fe, R_EB13, 1);
+
+ /* main pll charge pump source */
+ regs[R_EB4] |= 0x20;
+ tda18271_write_regs(fe, R_EB4, 1);
+
+ /* cal pll charge pump source */
+ regs[R_EB7] |= 0x20;
+ tda18271_write_regs(fe, R_EB7, 1);
+
+ /* force dcdc converter to 0 V */
+ regs[R_EB14] = 0x00;
+ tda18271_write_regs(fe, R_EB14, 1);
+
+ /* disable plls lock */
+ regs[R_EB20] &= ~0x20;
+ tda18271_write_regs(fe, R_EB20, 1);
+
+ /* set CAL mode to RF tracking filter calibration */
+ regs[R_EP4] |= 0x03;
+ tda18271_write_regs(fe, R_EP4, 2);
+
+ /* --------------------------------------------------------------- */
+
+ /* set the internal calibration signal */
+ N = freq;
+
+ tda18271_calc_main_pll(fe, N);
+ tda18271_write_regs(fe, R_MPD, 4);
+
+ /* downconvert internal calibration */
+ N += 1000000;
+
+ tda18271_calc_main_pll(fe, N);
+ tda18271_write_regs(fe, R_MPD, 4);
+
+ msleep(5);
+
+ tda18271_write_regs(fe, R_EP2, 1);
+ tda18271_write_regs(fe, R_EP1, 1);
+ tda18271_write_regs(fe, R_EP2, 1);
+ tda18271_write_regs(fe, R_EP1, 1);
+
+ /* --------------------------------------------------------------- */
+
+ /* normal operation for the main pll */
+ regs[R_EB4] &= ~0x20;
+ tda18271_write_regs(fe, R_EB4, 1);
+
+ /* normal operation for the cal pll */
+ regs[R_EB7] &= ~0x20;
+ tda18271_write_regs(fe, R_EB7, 1);
+
+ msleep(5); /* plls locking */
+
+ /* launch the rf tracking filters calibration */
+ regs[R_EB20] |= 0x20;
+ tda18271_write_regs(fe, R_EB20, 1);
+
+ msleep(60); /* calibration */
+
+ /* --------------------------------------------------------------- */
+
+ /* set CAL mode to normal */
+ regs[R_EP4] &= ~0x03;
+
+ /* switch on agc1 */
+ regs[R_EP3] &= ~0x40; /* sm_lt = 0 */
+
+ regs[R_EB18] &= ~0x03; /* set agc1_gain to 6 dB */
+ tda18271_write_regs(fe, R_EB18, 1);
+
+ tda18271_write_regs(fe, R_EP3, 2);
+
+ /* synchronization */
+ tda18271_write_regs(fe, R_EP1, 1);
+
+ /* get calibration result */
+ tda18271_read_extended(fe);
+
+ return regs[R_EB14];
+}
+
+static int tda18271_powerscan(struct dvb_frontend *fe,
+ u32 *freq_in, u32 *freq_out)
+{
+ struct tda18271_priv *priv = fe->tuner_priv;
+ unsigned char *regs = priv->tda18271_regs;
+ int sgn, bcal, count, wait;
+ u8 cid_target;
+ u16 count_limit;
+ u32 freq;
+
+ freq = *freq_in;
+
+ tda18271_calc_rf_band(fe, &freq);
+ tda18271_calc_rf_cal(fe, &freq);
+ tda18271_calc_gain_taper(fe, &freq);
+ tda18271_lookup_cid_target(fe, &freq, &cid_target, &count_limit);
+
+ tda18271_write_regs(fe, R_EP2, 1);
+ tda18271_write_regs(fe, R_EB14, 1);
+
+ /* downconvert frequency */
+ freq += 1000000;
+
+ tda18271_calc_main_pll(fe, freq);
+ tda18271_write_regs(fe, R_MPD, 4);
+
+ msleep(5); /* pll locking */
+
+ /* detection mode */
+ regs[R_EP4] &= ~0x03;
+ regs[R_EP4] |= 0x01;
+ tda18271_write_regs(fe, R_EP4, 1);
+
+ /* launch power detection measurement */
+ tda18271_write_regs(fe, R_EP2, 1);
+
+ /* read power detection info, stored in EB10 */
+ tda18271_read_extended(fe);
+
+ /* algorithm initialization */
+ sgn = 1;
+ *freq_out = *freq_in;
+ bcal = 0;
+ count = 0;
+ wait = false;
+
+ while ((regs[R_EB10] & 0x3f) < cid_target) {
+ /* downconvert updated freq to 1 MHz */
+ freq = *freq_in + (sgn * count) + 1000000;
+
+ tda18271_calc_main_pll(fe, freq);
+ tda18271_write_regs(fe, R_MPD, 4);
+
+ if (wait) {
+ msleep(5); /* pll locking */
+ wait = false;
+ } else
+ udelay(100); /* pll locking */
+
+ /* launch power detection measurement */
+ tda18271_write_regs(fe, R_EP2, 1);
+
+ /* read power detection info, stored in EB10 */
+ tda18271_read_extended(fe);
+
+ count += 200;
+
+ if (count < count_limit)
+ continue;
+
+ if (sgn <= 0)
+ break;
+
+ sgn = -1 * sgn;
+ count = 200;
+ wait = true;
+ }
+
+ if ((regs[R_EB10] & 0x3f) >= cid_target) {
+ bcal = 1;
+ *freq_out = freq - 1000000;
+ } else
+ bcal = 0;
+
+ tda_cal("bcal = %d, freq_in = %d, freq_out = %d (freq = %d)\n",
+ bcal, *freq_in, *freq_out, freq);
+
+ return bcal;
+}
+
+static int tda18271_powerscan_init(struct dvb_frontend *fe)
+{
+ struct tda18271_priv *priv = fe->tuner_priv;
+ unsigned char *regs = priv->tda18271_regs;
+
+ /* set standard to digital */
+ regs[R_EP3] &= ~0x1f; /* clear std bits */
+ regs[R_EP3] |= 0x12;
+
+ /* set cal mode to normal */
+ regs[R_EP4] &= ~0x03;
+
+ /* update IF output level & IF notch frequency */
+ regs[R_EP4] &= ~0x1c; /* clear if level bits */
+
+ tda18271_write_regs(fe, R_EP3, 2);
+
+ regs[R_EB18] &= ~0x03; /* set agc1_gain to 6 dB */
+ tda18271_write_regs(fe, R_EB18, 1);
+
+ regs[R_EB21] &= ~0x03; /* set agc2_gain to -15 dB */
+
+ /* 1.5 MHz low pass filter */
+ regs[R_EB23] |= 0x04; /* forcelp_fc2_en = 1 */
+ regs[R_EB23] |= 0x02; /* lp_fc[2] = 1 */
+
+ tda18271_write_regs(fe, R_EB21, 3);
+
+ return 0;
+}
+
+static int tda18271_rf_tracking_filters_init(struct dvb_frontend *fe, u32 freq)
+{
+ struct tda18271_priv *priv = fe->tuner_priv;
+ struct tda18271_rf_tracking_filter_cal *map = priv->rf_cal_state;
+ unsigned char *regs = priv->tda18271_regs;
+ int bcal, rf, i;
+#define RF1 0
+#define RF2 1
+#define RF3 2
+ u32 rf_default[3];
+ u32 rf_freq[3];
+ u8 prog_cal[3];
+ u8 prog_tab[3];
+
+ i = tda18271_lookup_rf_band(fe, &freq, NULL);
+
+ if (i < 0)
+ return i;
+
+ rf_default[RF1] = 1000 * map[i].rf1_def;
+ rf_default[RF2] = 1000 * map[i].rf2_def;
+ rf_default[RF3] = 1000 * map[i].rf3_def;
+
+ for (rf = RF1; rf <= RF3; rf++) {
+ if (0 == rf_default[rf])
+ return 0;
+ tda_cal("freq = %d, rf = %d\n", freq, rf);
+
+ /* look for optimized calibration frequency */
+ bcal = tda18271_powerscan(fe, &rf_default[rf], &rf_freq[rf]);
+
+ tda18271_calc_rf_cal(fe, &rf_freq[rf]);
+ prog_tab[rf] = regs[R_EB14];
+
+ if (1 == bcal)
+ prog_cal[rf] = tda18271_calibrate_rf(fe, rf_freq[rf]);
+ else
+ prog_cal[rf] = prog_tab[rf];
+
+ switch (rf) {
+ case RF1:
+ map[i].rf_a1 = 0;
+ map[i].rf_b1 = prog_cal[RF1] - prog_tab[RF1];
+ map[i].rf1 = rf_freq[RF1] / 1000;
+ break;
+ case RF2:
+ map[i].rf_a1 = (prog_cal[RF2] - prog_tab[RF2] -
+ prog_cal[RF1] + prog_tab[RF1]) /
+ ((rf_freq[RF2] - rf_freq[RF1]) / 1000);
+ map[i].rf2 = rf_freq[RF2] / 1000;
+ break;
+ case RF3:
+ map[i].rf_a2 = (prog_cal[RF3] - prog_tab[RF3] -
+ prog_cal[RF2] + prog_tab[RF2]) /
+ ((rf_freq[RF3] - rf_freq[RF2]) / 1000);
+ map[i].rf_b2 = prog_cal[RF2] - prog_tab[RF2];
+ map[i].rf3 = rf_freq[RF3] / 1000;
+ break;
+ default:
+ BUG();
+ }
+ }
+
+ return 0;
+}
+
+static int tda18271_calc_rf_filter_curve(struct dvb_frontend *fe)
+{
+ struct tda18271_priv *priv = fe->tuner_priv;
+ unsigned int i;
+
+ tda_info("tda18271: performing RF tracking filter calibration\n");
+
+ /* wait for die temperature stabilization */
+ msleep(200);
+
+ tda18271_powerscan_init(fe);
+
+ /* rf band calibration */
+ for (i = 0; priv->rf_cal_state[i].rfmax != 0; i++)
+ tda18271_rf_tracking_filters_init(fe, 1000 *
+ priv->rf_cal_state[i].rfmax);
+
+ priv->tm_rfcal = tda18271_read_thermometer(fe);
+
+ return 0;
+}
+
+/* ------------------------------------------------------------------ */
+
+static int tda18271_rf_cal_init(struct dvb_frontend *fe)
+{
+ struct tda18271_priv *priv = fe->tuner_priv;
+ unsigned char *regs = priv->tda18271_regs;
+
+ /* test RF_CAL_OK to see if we need init */
+ if ((regs[R_EP1] & 0x10) == 0)
+ priv->cal_initialized = false;
+
+ if (priv->cal_initialized)
+ return 0;
+
+ tda18271_calc_rf_filter_curve(fe);
+
+ tda18271_por(fe);
+
+ tda_info("tda18271: RF tracking filter calibration complete\n");
+
+ priv->cal_initialized = true;
+
+ return 0;
+}
+
+static int tda18271_init(struct dvb_frontend *fe)
+{
+ struct tda18271_priv *priv = fe->tuner_priv;
+
+ mutex_lock(&priv->lock);
+
+ /* power up */
+ tda18271_set_standby_mode(fe, 0, 0, 0);
+
+ /* initialization */
+ tda18271_ir_cal_init(fe);
+
+ if (priv->id == TDA18271HDC2)
+ tda18271_rf_cal_init(fe);
+
+ mutex_unlock(&priv->lock);
+
+ return 0;
+}
+
+static int tda18271c2_tune(struct dvb_frontend *fe,
+ u32 ifc, u32 freq, u32 bw, u8 std, int radio)
+{
+ struct tda18271_priv *priv = fe->tuner_priv;
+
+ tda_dbg("freq = %d, ifc = %d\n", freq, ifc);
+
+ tda18271_init(fe);
+
+ mutex_lock(&priv->lock);
+
+ tda18271_rf_tracking_filters_correction(fe, freq);
+
+ tda18271_channel_configuration(fe, ifc, freq, bw, std, radio);
+
+ mutex_unlock(&priv->lock);
+
+ return 0;
+}
+
+/* ------------------------------------------------------------------ */
+
+static int tda18271c1_tune(struct dvb_frontend *fe,
+ u32 ifc, u32 freq, u32 bw, u8 std, int radio)
+{
+ struct tda18271_priv *priv = fe->tuner_priv;
+ unsigned char *regs = priv->tda18271_regs;
+ u32 N = 0;
+
+ tda18271_init(fe);
+
+ mutex_lock(&priv->lock);
+
+ tda_dbg("freq = %d, ifc = %d\n", freq, ifc);
+
+ /* RF tracking filter calibration */
+
+ /* calculate bp filter */
+ tda18271_calc_bp_filter(fe, &freq);
+ tda18271_write_regs(fe, R_EP1, 1);
+
+ regs[R_EB4] &= 0x07;
+ regs[R_EB4] |= 0x60;
+ tda18271_write_regs(fe, R_EB4, 1);
+
+ regs[R_EB7] = 0x60;
+ tda18271_write_regs(fe, R_EB7, 1);
+
+ regs[R_EB14] = 0x00;
+ tda18271_write_regs(fe, R_EB14, 1);
+
+ regs[R_EB20] = 0xcc;
+ tda18271_write_regs(fe, R_EB20, 1);
+
+ /* set cal mode to RF tracking filter calibration */
+ regs[R_EP4] |= 0x03;
+
+ /* calculate cal pll */
+
+ switch (priv->mode) {
+ case TDA18271_ANALOG:
+ N = freq - 1250000;
+ break;
+ case TDA18271_DIGITAL:
+ N = freq + bw / 2;
+ break;
+ }
+
+ tda18271_calc_cal_pll(fe, N);
+
+ /* calculate main pll */
+
+ switch (priv->mode) {
+ case TDA18271_ANALOG:
+ N = freq - 250000;
+ break;
+ case TDA18271_DIGITAL:
+ N = freq + bw / 2 + 1000000;
+ break;
+ }
+
+ tda18271_calc_main_pll(fe, N);
+
+ tda18271_write_regs(fe, R_EP3, 11);
+ msleep(5); /* RF tracking filter calibration initialization */
+
+ /* search for K,M,CO for RF calibration */
+ tda18271_calc_km(fe, &freq);
+ tda18271_write_regs(fe, R_EB13, 1);
+
+ /* search for rf band */
+ tda18271_calc_rf_band(fe, &freq);
+
+ /* search for gain taper */
+ tda18271_calc_gain_taper(fe, &freq);
+
+ tda18271_write_regs(fe, R_EP2, 1);
+ tda18271_write_regs(fe, R_EP1, 1);
+ tda18271_write_regs(fe, R_EP2, 1);
+ tda18271_write_regs(fe, R_EP1, 1);
+
+ regs[R_EB4] &= 0x07;
+ regs[R_EB4] |= 0x40;
+ tda18271_write_regs(fe, R_EB4, 1);
+
+ regs[R_EB7] = 0x40;
+ tda18271_write_regs(fe, R_EB7, 1);
+ msleep(10);
+
+ regs[R_EB20] = 0xec;
+ tda18271_write_regs(fe, R_EB20, 1);
+ msleep(60); /* RF tracking filter calibration completion */
+
+ regs[R_EP4] &= ~0x03; /* set cal mode to normal */
+ tda18271_write_regs(fe, R_EP4, 1);
+
+ tda18271_write_regs(fe, R_EP1, 1);
+
+ /* RF tracking filter correction for VHF_Low band */
+ if (0 == tda18271_calc_rf_cal(fe, &freq))
+ tda18271_write_regs(fe, R_EB14, 1);
+
+ /* Channel Configuration */
+
+ switch (priv->mode) {
+ case TDA18271_ANALOG:
+ regs[R_EB22] = 0x2c;
+ break;
+ case TDA18271_DIGITAL:
+ regs[R_EB22] = 0x37;
+ break;
+ }
+ tda18271_write_regs(fe, R_EB22, 1);
+
+ regs[R_EP1] |= 0x40; /* set dis power level on */
+
+ /* set standard */
+ regs[R_EP3] &= ~0x1f; /* clear std bits */
+
+ /* see table 22 */
+ regs[R_EP3] |= std;
+
+ regs[R_EP4] &= ~0x03; /* set cal mode to normal */
+
+ regs[R_EP4] &= ~0x1c; /* clear if level bits */
+ switch (priv->mode) {
+ case TDA18271_ANALOG:
+ regs[R_MPD] &= ~0x80; /* IF notch = 0 */
+ break;
+ case TDA18271_DIGITAL:
+ regs[R_EP4] |= 0x04;
+ regs[R_MPD] |= 0x80;
+ break;
+ }
+
+ if (radio)
+ regs[R_EP4] |= 0x80;
+ else
+ regs[R_EP4] &= ~0x80;
+
+ /* image rejection validity */
+ tda18271_calc_ir_measure(fe, &freq);
+
+ /* calculate MAIN PLL */
+ N = freq + ifc;
+
+ tda18271_calc_main_pll(fe, N);
+
+ tda18271_write_regs(fe, R_TM, 15);
+ msleep(5);
+ mutex_unlock(&priv->lock);
+
+ return 0;
+}
+
+static inline int tda18271_tune(struct dvb_frontend *fe,
+ u32 ifc, u32 freq, u32 bw, u8 std, int radio)
+{
+ struct tda18271_priv *priv = fe->tuner_priv;
+ int ret = -EINVAL;
+
+ switch (priv->id) {
+ case TDA18271HDC1:
+ ret = tda18271c1_tune(fe, ifc, freq, bw, std, radio);
+ break;
+ case TDA18271HDC2:
+ ret = tda18271c2_tune(fe, ifc, freq, bw, std, radio);
+ break;
+ }
+ return ret;
+}
+
+/* ------------------------------------------------------------------ */
+
+static int tda18271_set_params(struct dvb_frontend *fe,
+ struct dvb_frontend_parameters *params)
+{
+ struct tda18271_priv *priv = fe->tuner_priv;
+ struct tda18271_std_map *std_map = &priv->std;
+ int ret;
+ u8 std;
+ u16 sgIF;
+ u32 bw, freq = params->frequency;
+
+ priv->mode = TDA18271_DIGITAL;
+
+ if (fe->ops.info.type == FE_ATSC) {
+ switch (params->u.vsb.modulation) {
+ case VSB_8:
+ case VSB_16:
+ std = std_map->atsc_6.std_bits;
+ sgIF = std_map->atsc_6.if_freq;
+ break;
+ case QAM_64:
+ case QAM_256:
+ std = std_map->qam_6.std_bits;
+ sgIF = std_map->qam_6.if_freq;
+ break;
+ default:
+ tda_warn("modulation not set!\n");
+ return -EINVAL;
+ }
+#if 0
+ /* userspace request is already center adjusted */
+ freq += 1750000; /* Adjust to center (+1.75MHZ) */
+#endif
+ bw = 6000000;
+ } else if (fe->ops.info.type == FE_OFDM) {
+ switch (params->u.ofdm.bandwidth) {
+ case BANDWIDTH_6_MHZ:
+ bw = 6000000;
+ std = std_map->dvbt_6.std_bits;
+ sgIF = std_map->dvbt_6.if_freq;
+ break;
+ case BANDWIDTH_7_MHZ:
+ bw = 7000000;
+ std = std_map->dvbt_7.std_bits;
+ sgIF = std_map->dvbt_7.if_freq;
+ break;
+ case BANDWIDTH_8_MHZ:
+ bw = 8000000;
+ std = std_map->dvbt_8.std_bits;
+ sgIF = std_map->dvbt_8.if_freq;
+ break;
+ default:
+ tda_warn("bandwidth not set!\n");
+ return -EINVAL;
+ }
+ } else {
+ tda_warn("modulation type not supported!\n");
+ return -EINVAL;
+ }
+
+ /* When tuning digital, the analog demod must be tri-stated */
+ if (fe->ops.analog_ops.standby)
+ fe->ops.analog_ops.standby(fe);
+
+ ret = tda18271_tune(fe, sgIF * 1000, freq, bw, std, 0);
+
+ if (ret < 0)
+ goto fail;
+
+ priv->frequency = freq;
+ priv->bandwidth = (fe->ops.info.type == FE_OFDM) ?
+ params->u.ofdm.bandwidth : 0;
+fail:
+ return ret;
+}
+
+static int tda18271_set_analog_params(struct dvb_frontend *fe,
+ struct analog_parameters *params)
+{
+ struct tda18271_priv *priv = fe->tuner_priv;
+ struct tda18271_std_map *std_map = &priv->std;
+ char *mode;
+ int ret, radio = 0;
+ u8 std;
+ u16 sgIF;
+ u32 freq = params->frequency * 62500;
+
+ priv->mode = TDA18271_ANALOG;
+
+ if (params->mode == V4L2_TUNER_RADIO) {
+ radio = 1;
+ freq = freq / 1000;
+ std = std_map->fm_radio.std_bits;
+ sgIF = std_map->fm_radio.if_freq;
+ mode = "fm";
+ } else if (params->std & V4L2_STD_MN) {
+ std = std_map->atv_mn.std_bits;
+ sgIF = std_map->atv_mn.if_freq;
+ mode = "MN";
+ } else if (params->std & V4L2_STD_B) {
+ std = std_map->atv_b.std_bits;
+ sgIF = std_map->atv_b.if_freq;
+ mode = "B";
+ } else if (params->std & V4L2_STD_GH) {
+ std = std_map->atv_gh.std_bits;
+ sgIF = std_map->atv_gh.if_freq;
+ mode = "GH";
+ } else if (params->std & V4L2_STD_PAL_I) {
+ std = std_map->atv_i.std_bits;
+ sgIF = std_map->atv_i.if_freq;
+ mode = "I";
+ } else if (params->std & V4L2_STD_DK) {
+ std = std_map->atv_dk.std_bits;
+ sgIF = std_map->atv_dk.if_freq;
+ mode = "DK";
+ } else if (params->std & V4L2_STD_SECAM_L) {
+ std = std_map->atv_l.std_bits;
+ sgIF = std_map->atv_l.if_freq;
+ mode = "L";
+ } else if (params->std & V4L2_STD_SECAM_LC) {
+ std = std_map->atv_lc.std_bits;
+ sgIF = std_map->atv_lc.if_freq;
+ mode = "L'";
+ } else {
+ std = std_map->atv_i.std_bits;
+ sgIF = std_map->atv_i.if_freq;
+ mode = "xx";
+ }
+
+ tda_dbg("setting tda18271 to system %s\n", mode);
+
+ ret = tda18271_tune(fe, sgIF * 1000, freq, 0, std, radio);
+
+ if (ret < 0)
+ goto fail;
+
+ priv->frequency = freq;
+ priv->bandwidth = 0;
+fail:
+ return ret;
+}
+
+static int tda18271_sleep(struct dvb_frontend *fe)
+{
+ struct tda18271_priv *priv = fe->tuner_priv;
+
+ mutex_lock(&priv->lock);
+
+ /* standby mode w/ slave tuner output
+ * & loop thru & xtal oscillator on */
+ tda18271_set_standby_mode(fe, 1, 0, 0);
+
+ mutex_unlock(&priv->lock);
+
+ return 0;
+}
+
+static int tda18271_release(struct dvb_frontend *fe)
+{
+ struct tda18271_priv *priv = fe->tuner_priv;
+
+ mutex_lock(&tda18271_list_mutex);
+
+ priv->count--;
+
+ if (!priv->count) {
+ tda_dbg("destroying instance @ %d-%04x\n",
+ i2c_adapter_id(priv->i2c_adap),
+ priv->i2c_addr);
+ list_del(&priv->tda18271_list);
+
+ kfree(priv);
+ }
+ mutex_unlock(&tda18271_list_mutex);
+
+ fe->tuner_priv = NULL;
+
+ return 0;
+}
+
+static int tda18271_get_frequency(struct dvb_frontend *fe, u32 *frequency)
+{
+ struct tda18271_priv *priv = fe->tuner_priv;
+ *frequency = priv->frequency;
+ return 0;
+}
+
+static int tda18271_get_bandwidth(struct dvb_frontend *fe, u32 *bandwidth)
+{
+ struct tda18271_priv *priv = fe->tuner_priv;
+ *bandwidth = priv->bandwidth;
+ return 0;
+}
+
+/* ------------------------------------------------------------------ */
+
+#define tda18271_update_std(std_cfg, name) do { \
+ if (map->std_cfg.if_freq + map->std_cfg.std_bits > 0) { \
+ tda_dbg("Using custom std config for %s\n", name); \
+ memcpy(&std->std_cfg, &map->std_cfg, \
+ sizeof(struct tda18271_std_map_item)); \
+ } } while (0)
+
+#define tda18271_dump_std_item(std_cfg, name) do { \
+ tda_dbg("(%s) if freq = %d, std bits = 0x%02x\n", \
+ name, std->std_cfg.if_freq, std->std_cfg.std_bits); \
+ } while (0)
+
+static int tda18271_dump_std_map(struct dvb_frontend *fe)
+{
+ struct tda18271_priv *priv = fe->tuner_priv;
+ struct tda18271_std_map *std = &priv->std;
+
+ tda_dbg("========== STANDARD MAP SETTINGS ==========\n");
+ tda18271_dump_std_item(fm_radio, "fm");
+ tda18271_dump_std_item(atv_b, "pal b");
+ tda18271_dump_std_item(atv_dk, "pal dk");
+ tda18271_dump_std_item(atv_gh, "pal gh");
+ tda18271_dump_std_item(atv_i, "pal i");
+ tda18271_dump_std_item(atv_l, "pal l");
+ tda18271_dump_std_item(atv_lc, "pal l'");
+ tda18271_dump_std_item(atv_mn, "atv mn");
+ tda18271_dump_std_item(atsc_6, "atsc 6");
+ tda18271_dump_std_item(dvbt_6, "dvbt 6");
+ tda18271_dump_std_item(dvbt_7, "dvbt 7");
+ tda18271_dump_std_item(dvbt_8, "dvbt 8");
+ tda18271_dump_std_item(qam_6, "qam 6");
+ tda18271_dump_std_item(qam_8, "qam 8");
+
+ return 0;
+}
+
+static int tda18271_update_std_map(struct dvb_frontend *fe,
+ struct tda18271_std_map *map)
+{
+ struct tda18271_priv *priv = fe->tuner_priv;
+ struct tda18271_std_map *std = &priv->std;
+
+ if (!map)
+ return -EINVAL;
+
+ tda18271_update_std(fm_radio, "fm");
+ tda18271_update_std(atv_b, "atv b");
+ tda18271_update_std(atv_dk, "atv dk");
+ tda18271_update_std(atv_gh, "atv gh");
+ tda18271_update_std(atv_i, "atv i");
+ tda18271_update_std(atv_l, "atv l");
+ tda18271_update_std(atv_lc, "atv l'");
+ tda18271_update_std(atv_mn, "atv mn");
+ tda18271_update_std(atsc_6, "atsc 6");
+ tda18271_update_std(dvbt_6, "dvbt 6");
+ tda18271_update_std(dvbt_7, "dvbt 7");
+ tda18271_update_std(dvbt_8, "dvbt 8");
+ tda18271_update_std(qam_6, "qam 6");
+ tda18271_update_std(qam_8, "qam 8");
+
+ return 0;
+}
+
+static int tda18271_get_id(struct dvb_frontend *fe)
+{
+ struct tda18271_priv *priv = fe->tuner_priv;
+ unsigned char *regs = priv->tda18271_regs;
+ char *name;
+ int ret = 0;
+
+ mutex_lock(&priv->lock);
+ tda18271_read_regs(fe);
+ mutex_unlock(&priv->lock);
+
+ switch (regs[R_ID] & 0x7f) {
+ case 3:
+ name = "TDA18271HD/C1";
+ priv->id = TDA18271HDC1;
+ break;
+ case 4:
+ name = "TDA18271HD/C2";
+ priv->id = TDA18271HDC2;
+ break;
+ default:
+ name = "Unknown device";
+ ret = -EINVAL;
+ break;
+ }
+
+ tda_info("%s detected @ %d-%04x%s\n", name,
+ i2c_adapter_id(priv->i2c_adap), priv->i2c_addr,
+ (0 == ret) ? "" : ", device not supported.");
+
+ return ret;
+}
+
+static struct dvb_tuner_ops tda18271_tuner_ops = {
+ .info = {
+ .name = "NXP TDA18271HD",
+ .frequency_min = 45000000,
+ .frequency_max = 864000000,
+ .frequency_step = 62500
+ },
+ .init = tda18271_init,
+ .sleep = tda18271_sleep,
+ .set_params = tda18271_set_params,
+ .set_analog_params = tda18271_set_analog_params,
+ .release = tda18271_release,
+ .get_frequency = tda18271_get_frequency,
+ .get_bandwidth = tda18271_get_bandwidth,
+};
+
+struct dvb_frontend *tda18271_attach(struct dvb_frontend *fe, u8 addr,
+ struct i2c_adapter *i2c,
+ struct tda18271_config *cfg)
+{
+ struct tda18271_priv *priv = NULL;
+ int state_found = 0;
+
+ mutex_lock(&tda18271_list_mutex);
+
+ list_for_each_entry(priv, &tda18271_list, tda18271_list) {
+ if ((i2c_adapter_id(priv->i2c_adap) == i2c_adapter_id(i2c)) &&
+ (priv->i2c_addr == addr)) {
+ tda_dbg("attaching existing tuner @ %d-%04x\n",
+ i2c_adapter_id(priv->i2c_adap),
+ priv->i2c_addr);
+ priv->count++;
+ fe->tuner_priv = priv;
+ state_found = 1;
+ /* allow dvb driver to override i2c gate setting */
+ if ((cfg) && (cfg->gate != TDA18271_GATE_ANALOG))
+ priv->gate = cfg->gate;
+ break;
+ }
+ }
+ if (state_found == 0) {
+ tda_dbg("creating new tuner instance @ %d-%04x\n",
+ i2c_adapter_id(i2c), addr);
+
+ priv = kzalloc(sizeof(struct tda18271_priv), GFP_KERNEL);
+ if (priv == NULL) {
+ mutex_unlock(&tda18271_list_mutex);
+ return NULL;
+ }
+
+ priv->i2c_addr = addr;
+ priv->i2c_adap = i2c;
+ priv->gate = (cfg) ? cfg->gate : TDA18271_GATE_AUTO;
+ priv->cal_initialized = false;
+ mutex_init(&priv->lock);
+ priv->count++;
+
+ fe->tuner_priv = priv;
+
+ list_add_tail(&priv->tda18271_list, &tda18271_list);
+
+ if (tda18271_get_id(fe) < 0)
+ goto fail;
+
+ if (tda18271_assign_map_layout(fe) < 0)
+ goto fail;
+
+ mutex_lock(&priv->lock);
+ tda18271_init_regs(fe);
+
+ if ((tda18271_cal_on_startup) && (priv->id == TDA18271HDC2))
+ tda18271_rf_cal_init(fe);
+
+ mutex_unlock(&priv->lock);
+ }
+
+ /* override default std map with values in config struct */
+ if ((cfg) && (cfg->std_map))
+ tda18271_update_std_map(fe, cfg->std_map);
+
+ mutex_unlock(&tda18271_list_mutex);
+
+ memcpy(&fe->ops.tuner_ops, &tda18271_tuner_ops,
+ sizeof(struct dvb_tuner_ops));
+
+ if (tda18271_debug & DBG_MAP)
+ tda18271_dump_std_map(fe);
+
+ return fe;
+fail:
+ mutex_unlock(&tda18271_list_mutex);
+
+ tda18271_release(fe);
+ return NULL;
+}
+EXPORT_SYMBOL_GPL(tda18271_attach);
+MODULE_DESCRIPTION("NXP TDA18271HD analog / digital tuner driver");
+MODULE_AUTHOR("Michael Krufky <mkrufky@linuxtv.org>");
+MODULE_LICENSE("GPL");
+MODULE_VERSION("0.2");
+
+/*
+ * Overrides for Emacs so that we follow Linus's tabbing style.
+ * ---------------------------------------------------------------------------
+ * Local variables:
+ * c-basic-offset: 8
+ * End:
+ */