V4L/DVB(7767): Move tuners to common/tuners

There were several issues in the past, caused by the hybrid tuner design, since
now, the same tuner can be used by drivers/media/dvb and drivers/media/video.

Kconfig items were rearranged, to split V4L/DVB core from their drivers.

Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

1 files changed, 666 insertions, 0 deletions

diff --git a/drivers/media/common/tuners/tda18271-common.c b/drivers/media/common/tuners/tda18271-common.c
new file mode 100644
index 000000000000..e27a7620a32f
--- /dev/null
+++ b/drivers/media/common/tuners/tda18271-common.c
@@ -0,0 +1,666 @@
+/*
+    tda18271-common.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 "tda18271-priv.h"
+
+static int tda18271_i2c_gate_ctrl(struct dvb_frontend *fe, int enable)
+{
+	struct tda18271_priv *priv = fe->tuner_priv;
+	enum tda18271_i2c_gate gate;
+	int ret = 0;
+
+	switch (priv->gate) {
+	case TDA18271_GATE_DIGITAL:
+	case TDA18271_GATE_ANALOG:
+		gate = priv->gate;
+		break;
+	case TDA18271_GATE_AUTO:
+	default:
+		switch (priv->mode) {
+		case TDA18271_DIGITAL:
+			gate = TDA18271_GATE_DIGITAL;
+			break;
+		case TDA18271_ANALOG:
+		default:
+			gate = TDA18271_GATE_ANALOG;
+			break;
+		}
+	}
+
+	switch (gate) {
+	case TDA18271_GATE_ANALOG:
+		if (fe->ops.analog_ops.i2c_gate_ctrl)
+			ret = fe->ops.analog_ops.i2c_gate_ctrl(fe, enable);
+		break;
+	case TDA18271_GATE_DIGITAL:
+		if (fe->ops.i2c_gate_ctrl)
+			ret = fe->ops.i2c_gate_ctrl(fe, enable);
+		break;
+	default:
+		ret = -EINVAL;
+		break;
+	}
+
+	return ret;
+};
+
+/*---------------------------------------------------------------------*/
+
+static void tda18271_dump_regs(struct dvb_frontend *fe, int extended)
+{
+	struct tda18271_priv *priv = fe->tuner_priv;
+	unsigned char *regs = priv->tda18271_regs;
+
+	tda_reg("=== TDA18271 REG DUMP ===\n");
+	tda_reg("ID_BYTE            = 0x%02x\n", 0xff & regs[R_ID]);
+	tda_reg("THERMO_BYTE        = 0x%02x\n", 0xff & regs[R_TM]);
+	tda_reg("POWER_LEVEL_BYTE   = 0x%02x\n", 0xff & regs[R_PL]);
+	tda_reg("EASY_PROG_BYTE_1   = 0x%02x\n", 0xff & regs[R_EP1]);
+	tda_reg("EASY_PROG_BYTE_2   = 0x%02x\n", 0xff & regs[R_EP2]);
+	tda_reg("EASY_PROG_BYTE_3   = 0x%02x\n", 0xff & regs[R_EP3]);
+	tda_reg("EASY_PROG_BYTE_4   = 0x%02x\n", 0xff & regs[R_EP4]);
+	tda_reg("EASY_PROG_BYTE_5   = 0x%02x\n", 0xff & regs[R_EP5]);
+	tda_reg("CAL_POST_DIV_BYTE  = 0x%02x\n", 0xff & regs[R_CPD]);
+	tda_reg("CAL_DIV_BYTE_1     = 0x%02x\n", 0xff & regs[R_CD1]);
+	tda_reg("CAL_DIV_BYTE_2     = 0x%02x\n", 0xff & regs[R_CD2]);
+	tda_reg("CAL_DIV_BYTE_3     = 0x%02x\n", 0xff & regs[R_CD3]);
+	tda_reg("MAIN_POST_DIV_BYTE = 0x%02x\n", 0xff & regs[R_MPD]);
+	tda_reg("MAIN_DIV_BYTE_1    = 0x%02x\n", 0xff & regs[R_MD1]);
+	tda_reg("MAIN_DIV_BYTE_2    = 0x%02x\n", 0xff & regs[R_MD2]);
+	tda_reg("MAIN_DIV_BYTE_3    = 0x%02x\n", 0xff & regs[R_MD3]);
+
+	/* only dump extended regs if DBG_ADV is set */
+	if (!(tda18271_debug & DBG_ADV))
+		return;
+
+	/* W indicates write-only registers.
+	 * Register dump for write-only registers shows last value written. */
+
+	tda_reg("EXTENDED_BYTE_1    = 0x%02x\n", 0xff & regs[R_EB1]);
+	tda_reg("EXTENDED_BYTE_2    = 0x%02x\n", 0xff & regs[R_EB2]);
+	tda_reg("EXTENDED_BYTE_3    = 0x%02x\n", 0xff & regs[R_EB3]);
+	tda_reg("EXTENDED_BYTE_4    = 0x%02x\n", 0xff & regs[R_EB4]);
+	tda_reg("EXTENDED_BYTE_5    = 0x%02x\n", 0xff & regs[R_EB5]);
+	tda_reg("EXTENDED_BYTE_6    = 0x%02x\n", 0xff & regs[R_EB6]);
+	tda_reg("EXTENDED_BYTE_7    = 0x%02x\n", 0xff & regs[R_EB7]);
+	tda_reg("EXTENDED_BYTE_8    = 0x%02x\n", 0xff & regs[R_EB8]);
+	tda_reg("EXTENDED_BYTE_9  W = 0x%02x\n", 0xff & regs[R_EB9]);
+	tda_reg("EXTENDED_BYTE_10   = 0x%02x\n", 0xff & regs[R_EB10]);
+	tda_reg("EXTENDED_BYTE_11   = 0x%02x\n", 0xff & regs[R_EB11]);
+	tda_reg("EXTENDED_BYTE_12   = 0x%02x\n", 0xff & regs[R_EB12]);
+	tda_reg("EXTENDED_BYTE_13   = 0x%02x\n", 0xff & regs[R_EB13]);
+	tda_reg("EXTENDED_BYTE_14   = 0x%02x\n", 0xff & regs[R_EB14]);
+	tda_reg("EXTENDED_BYTE_15   = 0x%02x\n", 0xff & regs[R_EB15]);
+	tda_reg("EXTENDED_BYTE_16 W = 0x%02x\n", 0xff & regs[R_EB16]);
+	tda_reg("EXTENDED_BYTE_17 W = 0x%02x\n", 0xff & regs[R_EB17]);
+	tda_reg("EXTENDED_BYTE_18   = 0x%02x\n", 0xff & regs[R_EB18]);
+	tda_reg("EXTENDED_BYTE_19 W = 0x%02x\n", 0xff & regs[R_EB19]);
+	tda_reg("EXTENDED_BYTE_20 W = 0x%02x\n", 0xff & regs[R_EB20]);
+	tda_reg("EXTENDED_BYTE_21   = 0x%02x\n", 0xff & regs[R_EB21]);
+	tda_reg("EXTENDED_BYTE_22   = 0x%02x\n", 0xff & regs[R_EB22]);
+	tda_reg("EXTENDED_BYTE_23   = 0x%02x\n", 0xff & regs[R_EB23]);
+}
+
+int tda18271_read_regs(struct dvb_frontend *fe)
+{
+	struct tda18271_priv *priv = fe->tuner_priv;
+	unsigned char *regs = priv->tda18271_regs;
+	unsigned char buf = 0x00;
+	int ret;
+	struct i2c_msg msg[] = {
+		{ .addr = priv->i2c_props.addr, .flags = 0,
+		  .buf = &buf, .len = 1 },
+		{ .addr = priv->i2c_props.addr, .flags = I2C_M_RD,
+		  .buf = regs, .len = 16 }
+	};
+
+	tda18271_i2c_gate_ctrl(fe, 1);
+
+	/* read all registers */
+	ret = i2c_transfer(priv->i2c_props.adap, msg, 2);
+
+	tda18271_i2c_gate_ctrl(fe, 0);
+
+	if (ret != 2)
+		tda_err("ERROR: i2c_transfer returned: %d\n", ret);
+
+	if (tda18271_debug & DBG_REG)
+		tda18271_dump_regs(fe, 0);
+
+	return (ret == 2 ? 0 : ret);
+}
+
+int tda18271_read_extended(struct dvb_frontend *fe)
+{
+	struct tda18271_priv *priv = fe->tuner_priv;
+	unsigned char *regs = priv->tda18271_regs;
+	unsigned char regdump[TDA18271_NUM_REGS];
+	unsigned char buf = 0x00;
+	int ret, i;
+	struct i2c_msg msg[] = {
+		{ .addr = priv->i2c_props.addr, .flags = 0,
+		  .buf = &buf, .len = 1 },
+		{ .addr = priv->i2c_props.addr, .flags = I2C_M_RD,
+		  .buf = regdump, .len = TDA18271_NUM_REGS }
+	};
+
+	tda18271_i2c_gate_ctrl(fe, 1);
+
+	/* read all registers */
+	ret = i2c_transfer(priv->i2c_props.adap, msg, 2);
+
+	tda18271_i2c_gate_ctrl(fe, 0);
+
+	if (ret != 2)
+		tda_err("ERROR: i2c_transfer returned: %d\n", ret);
+
+	for (i = 0; i < TDA18271_NUM_REGS; i++) {
+		/* don't update write-only registers */
+		if ((i != R_EB9)  &&
+		    (i != R_EB16) &&
+		    (i != R_EB17) &&
+		    (i != R_EB19) &&
+		    (i != R_EB20))
+		regs[i] = regdump[i];
+	}
+
+	if (tda18271_debug & DBG_REG)
+		tda18271_dump_regs(fe, 1);
+
+	return (ret == 2 ? 0 : ret);
+}
+
+int tda18271_write_regs(struct dvb_frontend *fe, int idx, int len)
+{
+	struct tda18271_priv *priv = fe->tuner_priv;
+	unsigned char *regs = priv->tda18271_regs;
+	unsigned char buf[TDA18271_NUM_REGS + 1];
+	struct i2c_msg msg = { .addr = priv->i2c_props.addr, .flags = 0,
+			       .buf = buf, .len = len + 1 };
+	int i, ret;
+
+	BUG_ON((len == 0) || (idx + len > sizeof(buf)));
+
+	buf[0] = idx;
+	for (i = 1; i <= len; i++)
+		buf[i] = regs[idx - 1 + i];
+
+	tda18271_i2c_gate_ctrl(fe, 1);
+
+	/* write registers */
+	ret = i2c_transfer(priv->i2c_props.adap, &msg, 1);
+
+	tda18271_i2c_gate_ctrl(fe, 0);
+
+	if (ret != 1)
+		tda_err("ERROR: i2c_transfer returned: %d\n", ret);
+
+	return (ret == 1 ? 0 : ret);
+}
+
+/*---------------------------------------------------------------------*/
+
+int tda18271_charge_pump_source(struct dvb_frontend *fe,
+				enum tda18271_pll pll, int force)
+{
+	struct tda18271_priv *priv = fe->tuner_priv;
+	unsigned char *regs = priv->tda18271_regs;
+
+	int r_cp = (pll == TDA18271_CAL_PLL) ? R_EB7 : R_EB4;
+
+	regs[r_cp] &= ~0x20;
+	regs[r_cp] |= ((force & 1) << 5);
+	tda18271_write_regs(fe, r_cp, 1);
+
+	return 0;
+}
+
+int tda18271_init_regs(struct dvb_frontend *fe)
+{
+	struct tda18271_priv *priv = fe->tuner_priv;
+	unsigned char *regs = priv->tda18271_regs;
+
+	tda_dbg("initializing registers for device @ %d-%04x\n",
+		i2c_adapter_id(priv->i2c_props.adap),
+		priv->i2c_props.addr);
+
+	/* initialize registers */
+	switch (priv->id) {
+	case TDA18271HDC1:
+		regs[R_ID]   = 0x83;
+		break;
+	case TDA18271HDC2:
+		regs[R_ID]   = 0x84;
+		break;
+	};
+
+	regs[R_TM]   = 0x08;
+	regs[R_PL]   = 0x80;
+	regs[R_EP1]  = 0xc6;
+	regs[R_EP2]  = 0xdf;
+	regs[R_EP3]  = 0x16;
+	regs[R_EP4]  = 0x60;
+	regs[R_EP5]  = 0x80;
+	regs[R_CPD]  = 0x80;
+	regs[R_CD1]  = 0x00;
+	regs[R_CD2]  = 0x00;
+	regs[R_CD3]  = 0x00;
+	regs[R_MPD]  = 0x00;
+	regs[R_MD1]  = 0x00;
+	regs[R_MD2]  = 0x00;
+	regs[R_MD3]  = 0x00;
+
+	switch (priv->id) {
+	case TDA18271HDC1:
+		regs[R_EB1]  = 0xff;
+		break;
+	case TDA18271HDC2:
+		regs[R_EB1]  = 0xfc;
+		break;
+	};
+
+	regs[R_EB2]  = 0x01;
+	regs[R_EB3]  = 0x84;
+	regs[R_EB4]  = 0x41;
+	regs[R_EB5]  = 0x01;
+	regs[R_EB6]  = 0x84;
+	regs[R_EB7]  = 0x40;
+	regs[R_EB8]  = 0x07;
+	regs[R_EB9]  = 0x00;
+	regs[R_EB10] = 0x00;
+	regs[R_EB11] = 0x96;
+
+	switch (priv->id) {
+	case TDA18271HDC1:
+		regs[R_EB12] = 0x0f;
+		break;
+	case TDA18271HDC2:
+		regs[R_EB12] = 0x33;
+		break;
+	};
+
+	regs[R_EB13] = 0xc1;
+	regs[R_EB14] = 0x00;
+	regs[R_EB15] = 0x8f;
+	regs[R_EB16] = 0x00;
+	regs[R_EB17] = 0x00;
+
+	switch (priv->id) {
+	case TDA18271HDC1:
+		regs[R_EB18] = 0x00;
+		break;
+	case TDA18271HDC2:
+		regs[R_EB18] = 0x8c;
+		break;
+	};
+
+	regs[R_EB19] = 0x00;
+	regs[R_EB20] = 0x20;
+
+	switch (priv->id) {
+	case TDA18271HDC1:
+		regs[R_EB21] = 0x33;
+		break;
+	case TDA18271HDC2:
+		regs[R_EB21] = 0xb3;
+		break;
+	};
+
+	regs[R_EB22] = 0x48;
+	regs[R_EB23] = 0xb0;
+
+	if (priv->small_i2c) {
+		tda18271_write_regs(fe, 0x00, 0x10);
+		tda18271_write_regs(fe, 0x10, 0x10);
+		tda18271_write_regs(fe, 0x20, 0x07);
+	} else
+		tda18271_write_regs(fe, 0x00, TDA18271_NUM_REGS);
+
+	/* setup agc1 gain */
+	regs[R_EB17] = 0x00;
+	tda18271_write_regs(fe, R_EB17, 1);
+	regs[R_EB17] = 0x03;
+	tda18271_write_regs(fe, R_EB17, 1);
+	regs[R_EB17] = 0x43;
+	tda18271_write_regs(fe, R_EB17, 1);
+	regs[R_EB17] = 0x4c;
+	tda18271_write_regs(fe, R_EB17, 1);
+
+	/* setup agc2 gain */
+	if ((priv->id) == TDA18271HDC1) {
+		regs[R_EB20] = 0xa0;
+		tda18271_write_regs(fe, R_EB20, 1);
+		regs[R_EB20] = 0xa7;
+		tda18271_write_regs(fe, R_EB20, 1);
+		regs[R_EB20] = 0xe7;
+		tda18271_write_regs(fe, R_EB20, 1);
+		regs[R_EB20] = 0xec;
+		tda18271_write_regs(fe, R_EB20, 1);
+	}
+
+	/* image rejection calibration */
+
+	/* low-band */
+	regs[R_EP3] = 0x1f;
+	regs[R_EP4] = 0x66;
+	regs[R_EP5] = 0x81;
+	regs[R_CPD] = 0xcc;
+	regs[R_CD1] = 0x6c;
+	regs[R_CD2] = 0x00;
+	regs[R_CD3] = 0x00;
+	regs[R_MPD] = 0xcd;
+	regs[R_MD1] = 0x77;
+	regs[R_MD2] = 0x08;
+	regs[R_MD3] = 0x00;
+
+	tda18271_write_regs(fe, R_EP3, 11);
+
+	if ((priv->id) == TDA18271HDC2) {
+		/* main pll cp source on */
+		tda18271_charge_pump_source(fe, TDA18271_MAIN_PLL, 1);
+		msleep(1);
+
+		/* main pll cp source off */
+		tda18271_charge_pump_source(fe, TDA18271_MAIN_PLL, 0);
+	}
+
+	msleep(5); /* pll locking */
+
+	/* launch detector */
+	tda18271_write_regs(fe, R_EP1, 1);
+	msleep(5); /* wanted low measurement */
+
+	regs[R_EP5] = 0x85;
+	regs[R_CPD] = 0xcb;
+	regs[R_CD1] = 0x66;
+	regs[R_CD2] = 0x70;
+
+	tda18271_write_regs(fe, R_EP3, 7);
+	msleep(5); /* pll locking */
+
+	/* launch optimization algorithm */
+	tda18271_write_regs(fe, R_EP2, 1);
+	msleep(30); /* image low optimization completion */
+
+	/* mid-band */
+	regs[R_EP5] = 0x82;
+	regs[R_CPD] = 0xa8;
+	regs[R_CD2] = 0x00;
+	regs[R_MPD] = 0xa9;
+	regs[R_MD1] = 0x73;
+	regs[R_MD2] = 0x1a;
+
+	tda18271_write_regs(fe, R_EP3, 11);
+	msleep(5); /* pll locking */
+
+	/* launch detector */
+	tda18271_write_regs(fe, R_EP1, 1);
+	msleep(5); /* wanted mid measurement */
+
+	regs[R_EP5] = 0x86;
+	regs[R_CPD] = 0xa8;
+	regs[R_CD1] = 0x66;
+	regs[R_CD2] = 0xa0;
+
+	tda18271_write_regs(fe, R_EP3, 7);
+	msleep(5); /* pll locking */
+
+	/* launch optimization algorithm */
+	tda18271_write_regs(fe, R_EP2, 1);
+	msleep(30); /* image mid optimization completion */
+
+	/* high-band */
+	regs[R_EP5] = 0x83;
+	regs[R_CPD] = 0x98;
+	regs[R_CD1] = 0x65;
+	regs[R_CD2] = 0x00;
+	regs[R_MPD] = 0x99;
+	regs[R_MD1] = 0x71;
+	regs[R_MD2] = 0xcd;
+
+	tda18271_write_regs(fe, R_EP3, 11);
+	msleep(5); /* pll locking */
+
+	/* launch detector */
+	tda18271_write_regs(fe, R_EP1, 1);
+	msleep(5); /* wanted high measurement */
+
+	regs[R_EP5] = 0x87;
+	regs[R_CD1] = 0x65;
+	regs[R_CD2] = 0x50;
+
+	tda18271_write_regs(fe, R_EP3, 7);
+	msleep(5); /* pll locking */
+
+	/* launch optimization algorithm */
+	tda18271_write_regs(fe, R_EP2, 1);
+	msleep(30); /* image high optimization completion */
+
+	/* return to normal mode */
+	regs[R_EP4] = 0x64;
+	tda18271_write_regs(fe, R_EP4, 1);
+
+	/* synchronize */
+	tda18271_write_regs(fe, R_EP1, 1);
+
+	return 0;
+}
+
+/*---------------------------------------------------------------------*/
+
+/*
+ *  Standby modes, EP3 [7:5]
+ *
+ *  | SM  || SM_LT || SM_XT || mode description
+ *  |=====\\=======\\=======\\===================================
+ *  |  0  ||   0   ||   0   || normal mode
+ *  |-----||-------||-------||-----------------------------------
+ *  |     ||       ||       || standby mode w/ slave tuner output
+ *  |  1  ||   0   ||   0   || & loop thru & xtal oscillator on
+ *  |-----||-------||-------||-----------------------------------
+ *  |  1  ||   1   ||   0   || standby mode w/ xtal oscillator on
+ *  |-----||-------||-------||-----------------------------------
+ *  |  1  ||   1   ||   1   || power off
+ *
+ */
+
+int tda18271_set_standby_mode(struct dvb_frontend *fe,
+			      int sm, int sm_lt, int sm_xt)
+{
+	struct tda18271_priv *priv = fe->tuner_priv;
+	unsigned char *regs = priv->tda18271_regs;
+
+	tda_dbg("sm = %d, sm_lt = %d, sm_xt = %d\n", sm, sm_lt, sm_xt);
+
+	regs[R_EP3]  &= ~0xe0; /* clear sm, sm_lt, sm_xt */
+	regs[R_EP3]  |= sm    ? (1 << 7) : 0 |
+			sm_lt ? (1 << 6) : 0 |
+			sm_xt ? (1 << 5) : 0;
+
+	tda18271_write_regs(fe, R_EP3, 1);
+
+	return 0;
+}
+
+/*---------------------------------------------------------------------*/
+
+int tda18271_calc_main_pll(struct dvb_frontend *fe, u32 freq)
+{
+	/* sets main post divider & divider bytes, but does not write them */
+	struct tda18271_priv *priv = fe->tuner_priv;
+	unsigned char *regs = priv->tda18271_regs;
+	u8 d, pd;
+	u32 div;
+
+	int ret = tda18271_lookup_pll_map(fe, MAIN_PLL, &freq, &pd, &d);
+	if (ret < 0)
+		goto fail;
+
+	regs[R_MPD]   = (0x77 & pd);
+
+	switch (priv->mode) {
+	case TDA18271_ANALOG:
+		regs[R_MPD]  &= ~0x08;
+		break;
+	case TDA18271_DIGITAL:
+		regs[R_MPD]  |=  0x08;
+		break;
+	}
+
+	div =  ((d * (freq / 1000)) << 7) / 125;
+
+	regs[R_MD1]   = 0x7f & (div >> 16);
+	regs[R_MD2]   = 0xff & (div >> 8);
+	regs[R_MD3]   = 0xff & div;
+fail:
+	return ret;
+}
+
+int tda18271_calc_cal_pll(struct dvb_frontend *fe, u32 freq)
+{
+	/* sets cal post divider & divider bytes, but does not write them */
+	struct tda18271_priv *priv = fe->tuner_priv;
+	unsigned char *regs = priv->tda18271_regs;
+	u8 d, pd;
+	u32 div;
+
+	int ret = tda18271_lookup_pll_map(fe, CAL_PLL, &freq, &pd, &d);
+	if (ret < 0)
+		goto fail;
+
+	regs[R_CPD]   = pd;
+
+	div =  ((d * (freq / 1000)) << 7) / 125;
+
+	regs[R_CD1]   = 0x7f & (div >> 16);
+	regs[R_CD2]   = 0xff & (div >> 8);
+	regs[R_CD3]   = 0xff & div;
+fail:
+	return ret;
+}
+
+/*---------------------------------------------------------------------*/
+
+int tda18271_calc_bp_filter(struct dvb_frontend *fe, u32 *freq)
+{
+	/* sets bp filter bits, but does not write them */
+	struct tda18271_priv *priv = fe->tuner_priv;
+	unsigned char *regs = priv->tda18271_regs;
+	u8 val;
+
+	int ret = tda18271_lookup_map(fe, BP_FILTER, freq, &val);
+	if (ret < 0)
+		goto fail;
+
+	regs[R_EP1]  &= ~0x07; /* clear bp filter bits */
+	regs[R_EP1]  |= (0x07 & val);
+fail:
+	return ret;
+}
+
+int tda18271_calc_km(struct dvb_frontend *fe, u32 *freq)
+{
+	/* sets K & M bits, but does not write them */
+	struct tda18271_priv *priv = fe->tuner_priv;
+	unsigned char *regs = priv->tda18271_regs;
+	u8 val;
+
+	int ret = tda18271_lookup_map(fe, RF_CAL_KMCO, freq, &val);
+	if (ret < 0)
+		goto fail;
+
+	regs[R_EB13] &= ~0x7c; /* clear k & m bits */
+	regs[R_EB13] |= (0x7c & val);
+fail:
+	return ret;
+}
+
+int tda18271_calc_rf_band(struct dvb_frontend *fe, u32 *freq)
+{
+	/* sets rf band bits, but does not write them */
+	struct tda18271_priv *priv = fe->tuner_priv;
+	unsigned char *regs = priv->tda18271_regs;
+	u8 val;
+
+	int ret = tda18271_lookup_map(fe, RF_BAND, freq, &val);
+	if (ret < 0)
+		goto fail;
+
+	regs[R_EP2]  &= ~0xe0; /* clear rf band bits */
+	regs[R_EP2]  |= (0xe0 & (val << 5));
+fail:
+	return ret;
+}
+
+int tda18271_calc_gain_taper(struct dvb_frontend *fe, u32 *freq)
+{
+	/* sets gain taper bits, but does not write them */
+	struct tda18271_priv *priv = fe->tuner_priv;
+	unsigned char *regs = priv->tda18271_regs;
+	u8 val;
+
+	int ret = tda18271_lookup_map(fe, GAIN_TAPER, freq, &val);
+	if (ret < 0)
+		goto fail;
+
+	regs[R_EP2]  &= ~0x1f; /* clear gain taper bits */
+	regs[R_EP2]  |= (0x1f & val);
+fail:
+	return ret;
+}
+
+int tda18271_calc_ir_measure(struct dvb_frontend *fe, u32 *freq)
+{
+	/* sets IR Meas bits, but does not write them */
+	struct tda18271_priv *priv = fe->tuner_priv;
+	unsigned char *regs = priv->tda18271_regs;
+	u8 val;
+
+	int ret = tda18271_lookup_map(fe, IR_MEASURE, freq, &val);
+	if (ret < 0)
+		goto fail;
+
+	regs[R_EP5] &= ~0x07;
+	regs[R_EP5] |= (0x07 & val);
+fail:
+	return ret;
+}
+
+int tda18271_calc_rf_cal(struct dvb_frontend *fe, u32 *freq)
+{
+	/* sets rf cal byte (RFC_Cprog), but does not write it */
+	struct tda18271_priv *priv = fe->tuner_priv;
+	unsigned char *regs = priv->tda18271_regs;
+	u8 val;
+
+	tda18271_lookup_map(fe, RF_CAL, freq, &val);
+
+	regs[R_EB14] = val;
+
+	return 0;
+}
+
+/*
+ * Overrides for Emacs so that we follow Linus's tabbing style.
+ * ---------------------------------------------------------------------------
+ * Local variables:
+ * c-basic-offset: 8
+ * End:
+ */