Commit 8ce47dad authored by Michael Krufky's avatar Michael Krufky Committed by Mauro Carvalho Chehab
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V4L/DVB (5317): Create tda827x dvb tuner module 



The patch moves the tda827x dvb tuning code to a separate module

Signed-off-by: default avatarMichael Krufky <mkrufky@linuxtv.org>
Signed-off-by: default avatarHartmut Hackmann <hartmut.hackmann@t-online.de>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@infradead.org>
parent 7c7fea66

drivers/media/dvb/frontends/Kconfig

+7 −0
Original line number Diff line number Diff line
@@ -290,6 +290,13 @@ config DVB_TDA826X 
	help

	  A DVB-S silicon tuner module. Say Y when you want to support this tuner.



config DVB_TDA827X

	tristate "Philips TDA827X silicon tuner"

	depends on DVB_CORE && I2C

	default m if DVB_FE_CUSTOMISE

	help

	  A DVB-T silicon tuner module. Say Y when you want to support this tuner.



config DVB_TUNER_QT1010

	tristate "Quantek QT1010 silicon tuner"

	depends on DVB_CORE && I2C

drivers/media/dvb/frontends/Makefile

+1 −0
Original line number Diff line number Diff line
@@ -37,6 +37,7 @@ obj-$(CONFIG_DVB_LNBP21) += lnbp21.o 
obj-$(CONFIG_DVB_ISL6421) += isl6421.o

obj-$(CONFIG_DVB_TDA10086) += tda10086.o

obj-$(CONFIG_DVB_TDA826X) += tda826x.o

obj-$(CONFIG_DVB_TDA827X) += tda827x.o

obj-$(CONFIG_DVB_TUNER_MT2060) += mt2060.o

obj-$(CONFIG_DVB_TUNER_QT1010) += qt1010.o

obj-$(CONFIG_DVB_TUA6100) += tua6100.o

drivers/media/dvb/frontends/tda1004x.h

+0 −3
Original line number Diff line number Diff line
@@ -106,9 +106,6 @@ struct tda1004x_state { 
	const struct tda1004x_config* config;

	struct dvb_frontend frontend;



	/* this allows to store probed board information */

	int	conf_probed;



	/* private demod data */

	enum tda1004x_demod demod_type;

};

drivers/media/dvb/frontends/tda827x.c

0 → 100644
+476 −0
Original line number Diff line number Diff line 
/*

 *

 * (c) 2005 Hartmut Hackmann

 * (c) 2007 Michael Krufky

 *

 *  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/module.h>

#include <linux/dvb/frontend.h>

#include <asm/types.h>



#include "tda827x.h"



static int debug = 0;

#define dprintk(args...) \

	do {					    \

		if (debug) printk(KERN_DEBUG "tda827x: " args); \

	} while (0)



struct tda827x_priv {

	int i2c_addr;

	struct i2c_adapter *i2c_adap;

	struct tda827x_config *cfg;

	u32 frequency;

	u32 bandwidth;

};



struct tda827x_data {

	u32 lomax;

	u8  spd;

	u8  bs;

	u8  bp;

	u8  cp;

	u8  gc3;

	u8 div1p5;

};



static const struct tda827x_data tda827x_dvbt[] = {

	{ .lomax =  62000000, .spd = 3, .bs = 2, .bp = 0, .cp = 0, .gc3 = 3, .div1p5 = 1},

	{ .lomax =  66000000, .spd = 3, .bs = 3, .bp = 0, .cp = 0, .gc3 = 3, .div1p5 = 1},

	{ .lomax =  76000000, .spd = 3, .bs = 1, .bp = 0, .cp = 0, .gc3 = 3, .div1p5 = 0},

	{ .lomax =  84000000, .spd = 3, .bs = 2, .bp = 0, .cp = 0, .gc3 = 3, .div1p5 = 0},

	{ .lomax =  93000000, .spd = 3, .bs = 2, .bp = 0, .cp = 0, .gc3 = 1, .div1p5 = 0},

	{ .lomax =  98000000, .spd = 3, .bs = 3, .bp = 0, .cp = 0, .gc3 = 1, .div1p5 = 0},

	{ .lomax = 109000000, .spd = 3, .bs = 3, .bp = 1, .cp = 0, .gc3 = 1, .div1p5 = 0},

	{ .lomax = 123000000, .spd = 2, .bs = 2, .bp = 1, .cp = 0, .gc3 = 1, .div1p5 = 1},

	{ .lomax = 133000000, .spd = 2, .bs = 3, .bp = 1, .cp = 0, .gc3 = 1, .div1p5 = 1},

	{ .lomax = 151000000, .spd = 2, .bs = 1, .bp = 1, .cp = 0, .gc3 = 1, .div1p5 = 0},

	{ .lomax = 154000000, .spd = 2, .bs = 2, .bp = 1, .cp = 0, .gc3 = 1, .div1p5 = 0},

	{ .lomax = 181000000, .spd = 2, .bs = 2, .bp = 1, .cp = 0, .gc3 = 0, .div1p5 = 0},

	{ .lomax = 185000000, .spd = 2, .bs = 2, .bp = 2, .cp = 0, .gc3 = 1, .div1p5 = 0},

	{ .lomax = 217000000, .spd = 2, .bs = 3, .bp = 2, .cp = 0, .gc3 = 1, .div1p5 = 0},

	{ .lomax = 244000000, .spd = 1, .bs = 2, .bp = 2, .cp = 0, .gc3 = 1, .div1p5 = 1},

	{ .lomax = 265000000, .spd = 1, .bs = 3, .bp = 2, .cp = 0, .gc3 = 1, .div1p5 = 1},

	{ .lomax = 302000000, .spd = 1, .bs = 1, .bp = 2, .cp = 0, .gc3 = 1, .div1p5 = 0},

	{ .lomax = 324000000, .spd = 1, .bs = 2, .bp = 2, .cp = 0, .gc3 = 1, .div1p5 = 0},

	{ .lomax = 370000000, .spd = 1, .bs = 2, .bp = 3, .cp = 0, .gc3 = 1, .div1p5 = 0},

	{ .lomax = 454000000, .spd = 1, .bs = 3, .bp = 3, .cp = 0, .gc3 = 1, .div1p5 = 0},

	{ .lomax = 493000000, .spd = 0, .bs = 2, .bp = 3, .cp = 0, .gc3 = 1, .div1p5 = 1},

	{ .lomax = 530000000, .spd = 0, .bs = 3, .bp = 3, .cp = 0, .gc3 = 1, .div1p5 = 1},

	{ .lomax = 554000000, .spd = 0, .bs = 1, .bp = 3, .cp = 0, .gc3 = 1, .div1p5 = 0},

	{ .lomax = 604000000, .spd = 0, .bs = 1, .bp = 4, .cp = 0, .gc3 = 0, .div1p5 = 0},

	{ .lomax = 696000000, .spd = 0, .bs = 2, .bp = 4, .cp = 0, .gc3 = 0, .div1p5 = 0},

	{ .lomax = 740000000, .spd = 0, .bs = 2, .bp = 4, .cp = 1, .gc3 = 0, .div1p5 = 0},

	{ .lomax = 820000000, .spd = 0, .bs = 3, .bp = 4, .cp = 0, .gc3 = 0, .div1p5 = 0},

	{ .lomax = 865000000, .spd = 0, .bs = 3, .bp = 4, .cp = 1, .gc3 = 0, .div1p5 = 0},

	{ .lomax =         0, .spd = 0, .bs = 0, .bp = 0, .cp = 0, .gc3 = 0, .div1p5 = 0}

};



static int tda827xo_set_params(struct dvb_frontend *fe,

			       struct dvb_frontend_parameters *params)

{

	struct tda827x_priv *priv = fe->tuner_priv;

	u8 buf[14];



	struct i2c_msg msg = { .addr = priv->i2c_addr, .flags = 0,

			       .buf = buf, .len = sizeof(buf) };

	int i, tuner_freq, if_freq;

	u32 N;



	switch (params->u.ofdm.bandwidth) {

	case BANDWIDTH_6_MHZ:

		if_freq = 4000000;

		break;

	case BANDWIDTH_7_MHZ:

		if_freq = 4500000;

		break;

	default:		   /* 8 MHz or Auto */

		if_freq = 5000000;

		break;

	}

	tuner_freq = params->frequency + if_freq;



	i = 0;

	while (tda827x_dvbt[i].lomax < tuner_freq) {

		if(tda827x_dvbt[i + 1].lomax == 0)

			break;

		i++;

	}



	N = ((tuner_freq + 125000) / 250000) << (tda827x_dvbt[i].spd + 2);

	buf[0] = 0;

	buf[1] = (N>>8) | 0x40;

	buf[2] = N & 0xff;

	buf[3] = 0;

	buf[4] = 0x52;

	buf[5] = (tda827x_dvbt[i].spd << 6) + (tda827x_dvbt[i].div1p5 << 5) +

				(tda827x_dvbt[i].bs << 3) + tda827x_dvbt[i].bp;

	buf[6] = (tda827x_dvbt[i].gc3 << 4) + 0x8f;

	buf[7] = 0xbf;

	buf[8] = 0x2a;

	buf[9] = 0x05;

	buf[10] = 0xff;

	buf[11] = 0x00;

	buf[12] = 0x00;

	buf[13] = 0x40;



	msg.len = 14;

	if (fe->ops.i2c_gate_ctrl)

		fe->ops.i2c_gate_ctrl(fe, 1);

	if (i2c_transfer(priv->i2c_adap, &msg, 1) != 1) {

		printk("%s: could not write to tuner at addr: 0x%02x\n",

		       __FUNCTION__, priv->i2c_addr << 1);

		return -EIO;

	}

	msleep(500);

	/* correct CP value */

	buf[0] = 0x30;

	buf[1] = 0x50 + tda827x_dvbt[i].cp;

	msg.len = 2;



	if (fe->ops.i2c_gate_ctrl)

		fe->ops.i2c_gate_ctrl(fe, 1);

	i2c_transfer(priv->i2c_adap, &msg, 1);



	priv->frequency = tuner_freq - if_freq; // FIXME

	priv->bandwidth = (fe->ops.info.type == FE_OFDM) ? params->u.ofdm.bandwidth : 0;



	return 0;

}



static int tda827xo_sleep(struct dvb_frontend *fe)

{

	struct tda827x_priv *priv = fe->tuner_priv;

	static u8 buf[] = { 0x30, 0xd0 };

	struct i2c_msg msg = { .addr = priv->i2c_addr, .flags = 0,

			       .buf = buf, .len = sizeof(buf) };



	if (fe->ops.i2c_gate_ctrl)

		fe->ops.i2c_gate_ctrl(fe, 1);

	i2c_transfer(priv->i2c_adap, &msg, 1);



	if (priv->cfg && priv->cfg->sleep)

		priv->cfg->sleep(fe);



	return 0;

}



/* ------------------------------------------------------------------ */



struct tda827xa_data {

	u32 lomax;

	u8  svco;

	u8  spd;

	u8  scr;

	u8  sbs;

	u8  gc3;

};



static const struct tda827xa_data tda827xa_dvbt[] = {

	{ .lomax =  56875000, .svco = 3, .spd = 4, .scr = 0, .sbs = 0, .gc3 = 1},

	{ .lomax =  67250000, .svco = 0, .spd = 3, .scr = 0, .sbs = 0, .gc3 = 1},

	{ .lomax =  81250000, .svco = 1, .spd = 3, .scr = 0, .sbs = 0, .gc3 = 1},

	{ .lomax =  97500000, .svco = 2, .spd = 3, .scr = 0, .sbs = 0, .gc3 = 1},

	{ .lomax = 113750000, .svco = 3, .spd = 3, .scr = 0, .sbs = 1, .gc3 = 1},

	{ .lomax = 134500000, .svco = 0, .spd = 2, .scr = 0, .sbs = 1, .gc3 = 1},

	{ .lomax = 154000000, .svco = 1, .spd = 2, .scr = 0, .sbs = 1, .gc3 = 1},

	{ .lomax = 162500000, .svco = 1, .spd = 2, .scr = 0, .sbs = 1, .gc3 = 1},

	{ .lomax = 183000000, .svco = 2, .spd = 2, .scr = 0, .sbs = 1, .gc3 = 1},

	{ .lomax = 195000000, .svco = 2, .spd = 2, .scr = 0, .sbs = 2, .gc3 = 1},

	{ .lomax = 227500000, .svco = 3, .spd = 2, .scr = 0, .sbs = 2, .gc3 = 1},

	{ .lomax = 269000000, .svco = 0, .spd = 1, .scr = 0, .sbs = 2, .gc3 = 1},

	{ .lomax = 290000000, .svco = 1, .spd = 1, .scr = 0, .sbs = 2, .gc3 = 1},

	{ .lomax = 325000000, .svco = 1, .spd = 1, .scr = 0, .sbs = 3, .gc3 = 1},

	{ .lomax = 390000000, .svco = 2, .spd = 1, .scr = 0, .sbs = 3, .gc3 = 1},

	{ .lomax = 455000000, .svco = 3, .spd = 1, .scr = 0, .sbs = 3, .gc3 = 1},

	{ .lomax = 520000000, .svco = 0, .spd = 0, .scr = 0, .sbs = 3, .gc3 = 1},

	{ .lomax = 538000000, .svco = 0, .spd = 0, .scr = 1, .sbs = 3, .gc3 = 1},

	{ .lomax = 550000000, .svco = 1, .spd = 0, .scr = 0, .sbs = 3, .gc3 = 1},

	{ .lomax = 620000000, .svco = 1, .spd = 0, .scr = 0, .sbs = 4, .gc3 = 0},

	{ .lomax = 650000000, .svco = 1, .spd = 0, .scr = 1, .sbs = 4, .gc3 = 0},

	{ .lomax = 700000000, .svco = 2, .spd = 0, .scr = 0, .sbs = 4, .gc3 = 0},

	{ .lomax = 780000000, .svco = 2, .spd = 0, .scr = 1, .sbs = 4, .gc3 = 0},

	{ .lomax = 820000000, .svco = 3, .spd = 0, .scr = 0, .sbs = 4, .gc3 = 0},

	{ .lomax = 870000000, .svco = 3, .spd = 0, .scr = 1, .sbs = 4, .gc3 = 0},

	{ .lomax = 911000000, .svco = 3, .spd = 0, .scr = 2, .sbs = 4, .gc3 = 0},

	{ .lomax =         0, .svco = 0, .spd = 0, .scr = 0, .sbs = 0, .gc3 = 0}

};



static int tda827xa_set_params(struct dvb_frontend *fe,

			       struct dvb_frontend_parameters *params)

{

	struct tda827x_priv *priv = fe->tuner_priv;

	u8 buf[10];



	struct i2c_msg msg = { .addr = priv->i2c_addr, .flags = 0,

			       .buf = buf, .len = sizeof(buf) };



	int i, tuner_freq, if_freq;

	u32 N;



	if (priv->cfg && priv->cfg->lna_gain)

		priv->cfg->lna_gain(fe, 1);

	msleep(20);



	switch (params->u.ofdm.bandwidth) {

	case BANDWIDTH_6_MHZ:

		if_freq = 4000000;

		break;

	case BANDWIDTH_7_MHZ:

		if_freq = 4500000;

		break;

	default:		   /* 8 MHz or Auto */

		if_freq = 5000000;

		break;

	}

	tuner_freq = params->frequency + if_freq;



	i = 0;

	while (tda827xa_dvbt[i].lomax < tuner_freq) {

		if(tda827xa_dvbt[i + 1].lomax == 0)

			break;

		i++;

	}



	N = ((tuner_freq + 31250) / 62500) << tda827xa_dvbt[i].spd;

	buf[0] = 0;            // subaddress

	buf[1] = N >> 8;

	buf[2] = N & 0xff;

	buf[3] = 0;

	buf[4] = 0x16;

	buf[5] = (tda827xa_dvbt[i].spd << 5) + (tda827xa_dvbt[i].svco << 3) +

			tda827xa_dvbt[i].sbs;

	buf[6] = 0x4b + (tda827xa_dvbt[i].gc3 << 4);

	buf[7] = 0x1c;

	buf[8] = 0x06;

	buf[9] = 0x24;

	buf[10] = 0x00;

	msg.len = 11;

	if (fe->ops.i2c_gate_ctrl)

		fe->ops.i2c_gate_ctrl(fe, 1);

	if (i2c_transfer(priv->i2c_adap, &msg, 1) != 1) {

		printk("%s: could not write to tuner at addr: 0x%02x\n",

		       __FUNCTION__, priv->i2c_addr << 1);

		return -EIO;

	}

	buf[0] = 0x90;

	buf[1] = 0xff;

	buf[2] = 0x60;

	buf[3] = 0x00;

	buf[4] = 0x59;  // lpsel, for 6MHz + 2

	msg.len = 5;

	if (fe->ops.i2c_gate_ctrl)

		fe->ops.i2c_gate_ctrl(fe, 1);

	i2c_transfer(priv->i2c_adap, &msg, 1);



	buf[0] = 0xa0;

	buf[1] = 0x40;

	msg.len = 2;

	if (fe->ops.i2c_gate_ctrl)

		fe->ops.i2c_gate_ctrl(fe, 1);

	i2c_transfer(priv->i2c_adap, &msg, 1);



	msleep(11);

	msg.flags = I2C_M_RD;

	if (fe->ops.i2c_gate_ctrl)

		fe->ops.i2c_gate_ctrl(fe, 1);

	i2c_transfer(priv->i2c_adap, &msg, 1);

	msg.flags = 0;



	buf[1] >>= 4;

	dprintk("tda8275a AGC2 gain is: %d\n", buf[1]);

	if ((buf[1]) < 2) {

		if (priv->cfg && priv->cfg->lna_gain)

			priv->cfg->lna_gain(fe, 0);

		buf[0] = 0x60;

		buf[1] = 0x0c;

		if (fe->ops.i2c_gate_ctrl)

			fe->ops.i2c_gate_ctrl(fe, 1);

		i2c_transfer(priv->i2c_adap, &msg, 1);

	}



	buf[0] = 0xc0;

	buf[1] = 0x99;    // lpsel, for 6MHz + 2

	if (fe->ops.i2c_gate_ctrl)

		fe->ops.i2c_gate_ctrl(fe, 1);

	i2c_transfer(priv->i2c_adap, &msg, 1);



	buf[0] = 0x60;

	buf[1] = 0x3c;

	if (fe->ops.i2c_gate_ctrl)

		fe->ops.i2c_gate_ctrl(fe, 1);

	i2c_transfer(priv->i2c_adap, &msg, 1);



	/* correct CP value */

	buf[0] = 0x30;

	buf[1] = 0x10 + tda827xa_dvbt[i].scr;

	if (fe->ops.i2c_gate_ctrl)

		fe->ops.i2c_gate_ctrl(fe, 1);

	i2c_transfer(priv->i2c_adap, &msg, 1);



	msleep(163);

	buf[0] = 0xc0;

	buf[1] = 0x39;  // lpsel, for 6MHz + 2

	if (fe->ops.i2c_gate_ctrl)

		fe->ops.i2c_gate_ctrl(fe, 1);

	i2c_transfer(priv->i2c_adap, &msg, 1);



	msleep(3);

	/* freeze AGC1 */

	buf[0] = 0x50;

	buf[1] = 0x4f + (tda827xa_dvbt[i].gc3 << 4);

	if (fe->ops.i2c_gate_ctrl)

		fe->ops.i2c_gate_ctrl(fe, 1);

	i2c_transfer(priv->i2c_adap, &msg, 1);



	priv->frequency = tuner_freq - if_freq; // FIXME

	priv->bandwidth = (fe->ops.info.type == FE_OFDM) ? params->u.ofdm.bandwidth : 0;



	return 0;

}



static int tda827xa_sleep(struct dvb_frontend *fe)

{

	struct tda827x_priv *priv = fe->tuner_priv;

	static u8 buf[] = { 0x30, 0x90 };

	struct i2c_msg msg = { .addr = priv->i2c_addr, .flags = 0,

			       .buf = buf, .len = sizeof(buf) };



	if (fe->ops.i2c_gate_ctrl)

		fe->ops.i2c_gate_ctrl(fe, 1);



	i2c_transfer(priv->i2c_adap, &msg, 1);



	if (fe->ops.i2c_gate_ctrl)

		fe->ops.i2c_gate_ctrl(fe, 0);



	if (priv->cfg && priv->cfg->sleep)

		priv->cfg->sleep(fe);



	return 0;

}



static int tda827x_release(struct dvb_frontend *fe)

{

	kfree(fe->tuner_priv);

	fe->tuner_priv = NULL;

	return 0;

}



static int tda827x_get_frequency(struct dvb_frontend *fe, u32 *frequency)

{

	struct tda827x_priv *priv = fe->tuner_priv;

	*frequency = priv->frequency;

	return 0;

}



static int tda827x_get_bandwidth(struct dvb_frontend *fe, u32 *bandwidth)

{

	struct tda827x_priv *priv = fe->tuner_priv;

	*bandwidth = priv->bandwidth;

	return 0;

}



static int tda827x_init(struct dvb_frontend *fe)

{

	struct tda827x_priv *priv = fe->tuner_priv;



	if (priv->cfg && priv->cfg->init)

		priv->cfg->init(fe);



	return 0;

}





static struct dvb_tuner_ops tda827xo_tuner_ops = {

	.info = {

		.name = "Philips TDA827X",

	},

	.release = tda827x_release,

	.init = tda827x_init,

	.sleep = tda827xo_sleep,

	.set_params = tda827xo_set_params,

	.get_frequency = tda827x_get_frequency,

	.get_bandwidth = tda827x_get_bandwidth,

};



static struct dvb_tuner_ops tda827xa_tuner_ops = {

	.info = {

		.name = "Philips TDA827XA",

	},

	.release = tda827x_release,

	.init = tda827x_init,

	.sleep = tda827xa_sleep,

	.set_params = tda827xa_set_params,

	.get_frequency = tda827x_get_frequency,

	.get_bandwidth = tda827x_get_bandwidth,

};



struct dvb_frontend *tda827x_attach(struct dvb_frontend *fe, int addr,

				    struct i2c_adapter *i2c,

				    struct tda827x_config *cfg)

{

	struct tda827x_priv *priv = NULL;

	u8 data;

	struct i2c_msg msg = { .addr = addr, .flags = I2C_M_RD,

			       .buf = &data, .len = 1 };

	dprintk("%s:\n", __FUNCTION__);



	if (fe->ops.i2c_gate_ctrl)

		fe->ops.i2c_gate_ctrl(fe, 1);



	if (i2c_transfer(i2c, &msg, 1) != 1) {

		printk("%s: could not read from tuner at addr: 0x%02x\n",

		       __FUNCTION__, addr << 1);

		return NULL;

	}



	priv = kzalloc(sizeof(struct tda827x_priv), GFP_KERNEL);

	if (priv == NULL)

		return NULL;



	priv->i2c_addr = addr;

	priv->i2c_adap = i2c;

	priv->cfg = cfg;

	if ((data & 0x3c) == 0) {

		dprintk("tda827x tuner found\n");

		memcpy(&fe->ops.tuner_ops, &tda827xo_tuner_ops, sizeof(struct dvb_tuner_ops));

	} else {

		dprintk("tda827xa tuner found\n");

		memcpy(&fe->ops.tuner_ops, &tda827xa_tuner_ops, sizeof(struct dvb_tuner_ops));

	}

	fe->tuner_priv = priv;



	return fe;

}

EXPORT_SYMBOL(tda827x_attach);



module_param(debug, int, 0644);

MODULE_PARM_DESC(debug, "Turn on/off frontend debugging (default:off).");



MODULE_DESCRIPTION("DVB TDA827x driver");

MODULE_AUTHOR("Hartmut Hackmann");

MODULE_AUTHOR("Michael Krufky");

MODULE_LICENSE("GPL");



/*

 * Overrides for Emacs so that we follow Linus's tabbing style.

 * ---------------------------------------------------------------------------

 * Local variables:

 * c-basic-offset: 8

 * End:

 */

drivers/media/dvb/frontends/tda827x.h

0 → 100644
+62 −0
Original line number Diff line number Diff line 
  /*

     DVB Driver for Philips tda827x / tda827xa Silicon tuners



     (c) 2005 Hartmut Hackmann

     (c) 2007 Michael Krufky



     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.



  */



#ifndef __DVB_TDA827X_H__

#define __DVB_TDA827X_H__



#include <linux/i2c.h>

#include "dvb_frontend.h"



struct tda827x_config

{

	void (*lna_gain) (struct dvb_frontend *fe, int high);

	int (*init) (struct dvb_frontend *fe);

	int (*sleep) (struct dvb_frontend *fe);

};





/**

 * Attach a tda827x tuner to the supplied frontend structure.

 *

 * @param fe Frontend to attach to.

 * @param addr i2c address of the tuner.

 * @param i2c i2c adapter to use.

 * @param cfg optional callback function pointers.

 * @return FE pointer on success, NULL on failure.

 */

#if defined(CONFIG_DVB_TDA827X) || (defined(CONFIG_DVB_TDA827X_MODULE) && defined(MODULE))

extern struct dvb_frontend* tda827x_attach(struct dvb_frontend *fe, int addr,

					   struct i2c_adapter *i2c,

					   struct tda827x_config *cfg);

#else

static inline struct dvb_frontend* tda827x_attach(struct dvb_frontend *fe,

						  int addr,

						  struct i2c_adapter *i2c,

						  struct tda827x_config *cfg)

{

	printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __FUNCTION__);

	return NULL;

}

#endif // CONFIG_DVB_TDA827X



#endif // __DVB_TDA827X_H__

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