Merge branch 'linux-2.6'

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 000000000000..dfe72aaec380
--- /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:
+ */