Commit cbdc80ed authored by Antti Palosaari's avatar Antti Palosaari Committed by Mauro Carvalho Chehab
Browse files

V4L/DVB (5137): Dvb: add new qt1010 tuner module 



QT1010:
- old qt1010-code totally rewritten and put in own kernel module
- same enhancements as my earlier QT1010 125kHz patch
- tuner initialization
- register 1f calculation
- register 20 calculation
- register 25 calculation

m920x: (MSI Megasky)
- use new QT1010 module instead of old code

Signed-off-by: default avatarAntti Palosaari <crope@iki.fi>
Signed-off-by: default avatarMichael Krufky <mkrufky@linuxtv.org>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@infradead.org>
parent 1f61f3ba

drivers/media/dvb/dvb-usb/m920x.c

+12 −1
Original line number Diff line number Diff line
@@ -383,6 +383,17 @@ static int m9206_firmware_download(struct usb_device *udev, const struct firmwar 
	return ret;

}



static struct qt1010_config megasky_qt1010_config = {

	.i2c_address = 0xc4

};



static int megasky_tuner_attach(struct dvb_usb_adapter *adap)

{

	return dvb_attach(qt1010_attach,

			  adap->fe, &adap->dev->i2c_adap,

			  &megasky_qt1010_config) == NULL ? -ENODEV : 0;

}



/* DVB USB Driver stuff */

static struct dvb_usb_device_properties megasky_properties;
@@ -442,7 +453,7 @@ static struct dvb_usb_device_properties megasky_properties = { 
		.pid_filter_ctrl  = m9206_pid_filter_ctrl,



		.frontend_attach  = megasky_frontend_attach,

		.tuner_attach     = qt1010_tuner_attach,

		.tuner_attach     = megasky_tuner_attach,



		.stream = {

			.type = USB_BULK,

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_TUNER_QT1010

	tristate "Quantek QT1010 silicon tuner"

	depends on DVB_CORE && I2C

	default m if DVB_FE_CUSTOMISE

	help

	  A driver for the silicon tuner QT1010 from Quantek.



config DVB_TUNER_MT2060

	tristate "Microtune MT2060 silicon IF tuner"

	depends on I2C

drivers/media/dvb/frontends/Makefile

+1 −0
Original line number Diff line number Diff line
@@ -38,5 +38,6 @@ obj-$(CONFIG_DVB_ISL6421) += isl6421.o 
obj-$(CONFIG_DVB_TDA10086) += tda10086.o

obj-$(CONFIG_DVB_TDA826X) += tda826x.o

obj-$(CONFIG_DVB_TUNER_MT2060) += mt2060.o

obj-$(CONFIG_DVB_TUNER_QT1010) += qt1010.o

obj-$(CONFIG_DVB_TUA6100) += tua6100.o

obj-$(CONFIG_DVB_TUNER_LGH06XF) += lgh06xf.o

drivers/media/dvb/frontends/qt1010.c

0 → 100644
+452 −0
Original line number Diff line number Diff line 
/*

 *  Driver for Quantek QT1010 silicon tuner

 *

 *  Copyright (C) 2006 Antti Palosaari <crope@iki.fi>

 *                     Aapo Tahkola <aet@rasterburn.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 "qt1010.h"

#include "qt1010_priv.h"



static int debug;

module_param(debug, int, 0644);

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



#define dprintk(args...) do { if (debug) {printk(KERN_DEBUG "QT1010: " args); printk("\n"); }} while (0)



/* read single register */

static int qt1010_readreg(struct qt1010_priv *priv, u8 reg, u8 *val)

{

	struct i2c_msg msg[2] = {

		{ .addr = priv->cfg->i2c_address, .flags = 0,        .buf = &reg, .len = 1 },

		{ .addr = priv->cfg->i2c_address, .flags = I2C_M_RD, .buf = val,  .len = 1 },

	};



	if (i2c_transfer(priv->i2c, msg, 2) != 2) {

		printk(KERN_WARNING "qt1010 I2C read failed\n");

		return -EREMOTEIO;

	}

	return 0;

}



/* write single register */

static int qt1010_writereg(struct qt1010_priv *priv, u8 reg, u8 val)

{

	u8 buf[2] = { reg, val };

	struct i2c_msg msg = {

		.addr = priv->cfg->i2c_address, .flags = 0, .buf = buf, .len = 2

	};



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

		printk(KERN_WARNING "qt1010 I2C write failed\n");

		return -EREMOTEIO;

	}

	return 0;

}



/* dump all registers */

static void qt1010_dump_regs(struct qt1010_priv *priv)

{

	char buf[52], buf2[4];

	u8 reg, val;



	for (reg = 0; ; reg++) {

		if (reg % 16 == 0) {

			if (reg)

				printk("%s\n", buf);

			sprintf(buf, "%02x: ", reg);

		}

		if (qt1010_readreg(priv, reg, &val) == 0)

			sprintf(buf2, "%02x ", val);

		else

			strcpy(buf2, "-- ");

		strcat(buf, buf2);

		if (reg == 0x2f)

			break;

	}

	printk("%s\n", buf);

}



static int qt1010_set_params(struct dvb_frontend *fe, struct dvb_frontend_parameters *params)

{

	struct qt1010_priv *priv;

	int err;

	u32 freq, div, mod1, mod2;

	u8 i, tmpval, reg05;

	qt1010_i2c_oper_t rd[48] = {

		{ QT1010_WR, 0x01, 0x80 },

		{ QT1010_WR, 0x02, 0x3f },

		{ QT1010_WR, 0x05, 0xff }, /* 02 c write */

		{ QT1010_WR, 0x06, 0x44 },

		{ QT1010_WR, 0x07, 0xff }, /* 04 c write */

		{ QT1010_WR, 0x08, 0x08 },

		{ QT1010_WR, 0x09, 0xff }, /* 06 c write */

		{ QT1010_WR, 0x0a, 0xff }, /* 07 c write */

		{ QT1010_WR, 0x0b, 0xff }, /* 08 c write */

		{ QT1010_WR, 0x0c, 0xe1 },

		{ QT1010_WR, 0x1a, 0xff }, /* 10 c write */

		{ QT1010_WR, 0x1b, 0x00 },

		{ QT1010_WR, 0x1c, 0x89 },

		{ QT1010_WR, 0x11, 0xff }, /* 13 c write */

		{ QT1010_WR, 0x12, 0xff }, /* 14 c write */

		{ QT1010_WR, 0x22, 0xff }, /* 15 c write */

		{ QT1010_WR, 0x1e, 0x00 },

		{ QT1010_WR, 0x1e, 0xd0 },

		{ QT1010_RD, 0x22, 0xff }, /* 16 c read */

		{ QT1010_WR, 0x1e, 0x00 },

		{ QT1010_RD, 0x05, 0xff }, /* 20 c read */

		{ QT1010_RD, 0x22, 0xff }, /* 21 c read */

		{ QT1010_WR, 0x23, 0xd0 },

		{ QT1010_WR, 0x1e, 0x00 },

		{ QT1010_WR, 0x1e, 0xe0 },

		{ QT1010_RD, 0x23, 0xff }, /* 25 c read */

		{ QT1010_RD, 0x23, 0xff }, /* 26 c read */

		{ QT1010_WR, 0x1e, 0x00 },

		{ QT1010_WR, 0x24, 0xd0 },

		{ QT1010_WR, 0x1e, 0x00 },

		{ QT1010_WR, 0x1e, 0xf0 },

		{ QT1010_RD, 0x24, 0xff }, /* 31 c read */

		{ QT1010_WR, 0x1e, 0x00 },

		{ QT1010_WR, 0x14, 0x7f },

		{ QT1010_WR, 0x15, 0x7f },

		{ QT1010_WR, 0x05, 0xff }, /* 35 c write */

		{ QT1010_WR, 0x06, 0x00 },

		{ QT1010_WR, 0x15, 0x1f },

		{ QT1010_WR, 0x16, 0xff },

		{ QT1010_WR, 0x18, 0xff },

		{ QT1010_WR, 0x1f, 0xff }, /* 40 c write */

		{ QT1010_WR, 0x20, 0xff }, /* 41 c write */

		{ QT1010_WR, 0x21, 0x53 },

		{ QT1010_WR, 0x25, 0xff }, /* 43 c write */

		{ QT1010_WR, 0x26, 0x15 },

		{ QT1010_WR, 0x00, 0xff }, /* 45 c write */

		{ QT1010_WR, 0x02, 0x00 },

		{ QT1010_WR, 0x01, 0x00 }

	};



#define FREQ1 32000000 /* 32 MHz */

#define FREQ2  4000000 /* 4 MHz Quartz oscillator in the stick? */



	priv = fe->tuner_priv;

	freq = params->frequency;

	div = (freq + QT1010_OFFSET) / QT1010_STEP;

	freq = (div * QT1010_STEP) - QT1010_OFFSET;

	mod1 = (freq + QT1010_OFFSET) % FREQ1;

	mod2 = (freq + QT1010_OFFSET) % FREQ2;

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

	priv->frequency = freq;



	/* reg 05 base value */

	if      (freq < 290000000) reg05 = 0x14; /* 290 MHz */

	else if (freq < 610000000) reg05 = 0x34; /* 610 MHz */

	else if (freq < 802000000) reg05 = 0x54; /* 802 MHz */

	else                       reg05 = 0x74;



	/* 0x5 */

	rd[2].val = reg05;



	/* 07 - set frequency: 32 MHz scale */

	rd[4].val = (freq + QT1010_OFFSET) / FREQ1;



	/* 09 - changes every 8/24 MHz */

	if (mod1 < 8000000) rd[6].val = 0x1d;

	else                rd[6].val = 0x1c;



	/* 0a - set frequency: 4 MHz scale (max 28 MHz) */

	if      (mod1 < 1*FREQ2) rd[7].val = 0x09; /*  +0 MHz */

	else if (mod1 < 2*FREQ2) rd[7].val = 0x08; /*  +4 MHz */

	else if (mod1 < 3*FREQ2) rd[7].val = 0x0f; /*  +8 MHz */

	else if (mod1 < 4*FREQ2) rd[7].val = 0x0e; /* +12 MHz */

	else if (mod1 < 5*FREQ2) rd[7].val = 0x0d; /* +16 MHz */

	else if (mod1 < 6*FREQ2) rd[7].val = 0x0c; /* +20 MHz */

	else if (mod1 < 7*FREQ2) rd[7].val = 0x0b; /* +24 MHz */

	else                     rd[7].val = 0x0a; /* +28 MHz */



	/* 0b - changes every 2/2 MHz */

	if (mod2 < 2000000) rd[8].val = 0x45;

	else                rd[8].val = 0x44;



	/* 1a - set frequency: 125 kHz scale (max 3875 kHz)*/

	tmpval = 0x78; /* byte, overflows intentionally */

	rd[10].val = tmpval-((mod2/QT1010_STEP)*0x08);



	/* 11 */

	rd[13].val = 0xfd; /* TODO: correct value calculation */



	/* 12 */

	rd[14].val = 0x91; /* TODO: correct value calculation */



	/* 22 */

	if      (freq < 450000000) rd[15].val = 0xd0; /* 450 MHz */

	else if (freq < 482000000) rd[15].val = 0xd1; /* 482 MHz */

	else if (freq < 514000000) rd[15].val = 0xd4; /* 514 MHz */

	else if (freq < 546000000) rd[15].val = 0xd7; /* 546 MHz */

	else if (freq < 610000000) rd[15].val = 0xda; /* 610 MHz */

	else                       rd[15].val = 0xd0;



	/* 05 */

	rd[35].val = (reg05 & 0xf0);



	/* 1f */

	if      (mod1 <  8000000) tmpval = 0x00;

	else if (mod1 < 12000000) tmpval = 0x01;

	else if (mod1 < 16000000) tmpval = 0x02;

	else if (mod1 < 24000000) tmpval = 0x03;

	else if (mod1 < 28000000) tmpval = 0x04;

	else                      tmpval = 0x05;

	rd[40].val = (priv->reg1f_init_val + 0x0e + tmpval);



	/* 20 */

	if      (mod1 <  8000000) tmpval = 0x00;

	else if (mod1 < 12000000) tmpval = 0x01;

	else if (mod1 < 20000000) tmpval = 0x02;

	else if (mod1 < 24000000) tmpval = 0x03;

	else if (mod1 < 28000000) tmpval = 0x04;

	else                      tmpval = 0x05;

	rd[41].val = (priv->reg20_init_val + 0x0d + tmpval);



	/* 25 */

	rd[43].val = priv->reg25_init_val;



	/* 00 */

	rd[45].val = 0x92; /* TODO: correct value calculation */



	dprintk("freq:%u 05:%02x 07:%02x 09:%02x 0a:%02x 0b:%02x 1a:%02x 11:%02x " \

		"12:%02x 22:%02x 05:%02x 1f:%02x 20:%02x 25:%02x 00:%02x", \

		freq, rd[2].val, rd[4].val, rd[6].val, rd[7].val, rd[8].val, \

		rd[10].val, rd[13].val, rd[14].val, rd[15].val, rd[35].val, \

		rd[40].val, rd[41].val, rd[43].val, rd[45].val);



	for (i = 0; i < sizeof(rd) / sizeof(*rd); i++) {

		if (rd[i].oper == QT1010_WR) {

			err = qt1010_writereg(priv, rd[i].reg, rd[i].val);

		} else { /* read is required to proper locking */

			err = qt1010_readreg(priv, rd[i].reg, &tmpval);

		}

		if (err) return err;

	}



	if (debug)

		qt1010_dump_regs(priv);



	return 0;

}



static int qt1010_init_meas1(struct qt1010_priv *priv, u8 oper, u8 reg, u8 reg_init_val, u8 *retval)

{

	u8 i, val1, val2;

	int err;



	qt1010_i2c_oper_t i2c_data[] = {

		{ QT1010_WR, reg, reg_init_val },

		{ QT1010_WR, 0x1e, 0x00 },

		{ QT1010_WR, 0x1e, oper },

		{ QT1010_RD, reg, 0xff }

	};



	for (i = 0; i < sizeof(i2c_data) / sizeof(*i2c_data); i++) {

		if (i2c_data[i].oper == QT1010_WR) {

			err = qt1010_writereg(priv, i2c_data[i].reg, i2c_data[i].val);

		} else {

			err = qt1010_readreg(priv, i2c_data[i].reg, &val2);

		}

		if (err) return err;

	}



	do {

		val1 = val2;

		err = qt1010_readreg(priv, reg, &val2);

		if (err) return err;

		dprintk("compare reg:%02x %02x %02x", reg, val1, val2);

	} while (val1 != val2);

	*retval = val1;



	return qt1010_writereg(priv, 0x1e, 0x00);

}





static u8 qt1010_init_meas2(struct qt1010_priv *priv, u8 reg_init_val, u8 *retval)

{

	u8 i, val;

	int err;

	qt1010_i2c_oper_t i2c_data[] = {

		{ QT1010_WR, 0x07, reg_init_val },

		{ QT1010_WR, 0x22, 0xd0 },

		{ QT1010_WR, 0x1e, 0x00 },

		{ QT1010_WR, 0x1e, 0xd0 },

		{ QT1010_RD, 0x22, 0xff },

		{ QT1010_WR, 0x1e, 0x00 },

		{ QT1010_WR, 0x22, 0xff }

	};

	for (i = 0; i < sizeof(i2c_data) / sizeof(*i2c_data); i++) {

		if (i2c_data[i].oper == QT1010_WR) {

			err = qt1010_writereg(priv, i2c_data[i].reg, i2c_data[i].val);

		} else {

			err = qt1010_readreg(priv, i2c_data[i].reg, &val);

		}

		if (err) return err;

	}

	*retval = val;

	return 0;

}



static int qt1010_init(struct dvb_frontend *fe)

{

	struct qt1010_priv *priv = fe->tuner_priv;

	struct dvb_frontend_parameters params;

	int err;

	u8 i, tmpval, *valptr = NULL;



	qt1010_i2c_oper_t i2c_data[] = {

		{ QT1010_WR, 0x01, 0x80 },

		{ QT1010_WR, 0x0d, 0x84 },

		{ QT1010_WR, 0x0e, 0xb7 },

		{ QT1010_WR, 0x2a, 0x23 },

		{ QT1010_WR, 0x2c, 0xdc },

		{ QT1010_M1, 0x25, 0x40 }, /* get reg 25 init value */

		{ QT1010_M1, 0x81, 0xff }, /* get reg 25 init value */

		{ QT1010_WR, 0x2b, 0x70 },

		{ QT1010_WR, 0x2a, 0x23 },

		{ QT1010_M1, 0x26, 0x08 },

		{ QT1010_M1, 0x82, 0xff },

		{ QT1010_WR, 0x05, 0x14 },

		{ QT1010_WR, 0x06, 0x44 },

		{ QT1010_WR, 0x07, 0x28 },

		{ QT1010_WR, 0x08, 0x0b },

		{ QT1010_WR, 0x11, 0xfd },

		{ QT1010_M1, 0x22, 0x0d },

		{ QT1010_M1, 0xd0, 0xff },

		{ QT1010_WR, 0x06, 0x40 },

		{ QT1010_WR, 0x16, 0xf0 },

		{ QT1010_WR, 0x02, 0x38 },

		{ QT1010_WR, 0x03, 0x18 },

		{ QT1010_WR, 0x20, 0xe0 },

		{ QT1010_M1, 0x1f, 0x20 }, /* get reg 1f init value */

		{ QT1010_M1, 0x84, 0xff }, /* get reg 1f init value */

		{ QT1010_RD, 0x20, 0x20 }, /* get reg 20 init value */

		{ QT1010_WR, 0x03, 0x19 },

		{ QT1010_WR, 0x02, 0x3f },

		{ QT1010_WR, 0x21, 0x53 },

		{ QT1010_RD, 0x21, 0xff },

		{ QT1010_WR, 0x11, 0xfd },

		{ QT1010_WR, 0x05, 0x34 },

		{ QT1010_WR, 0x06, 0x44 },

		{ QT1010_WR, 0x08, 0x08 }

	};



	for (i = 0; i < sizeof(i2c_data) / sizeof(*i2c_data); i++) {

		switch (i2c_data[i].oper) {

		case QT1010_WR:

			err = qt1010_writereg(priv, i2c_data[i].reg, i2c_data[i].val);

			break;

		case QT1010_RD:

			if (i2c_data[i].val == 0x20) valptr = &priv->reg20_init_val;

			else valptr = &tmpval;

			err = qt1010_readreg(priv, i2c_data[i].reg, valptr);

			break;

		case QT1010_M1:

			if (i2c_data[i].val == 0x25) valptr = &priv->reg25_init_val;

			else if (i2c_data[i].val == 0x1f) valptr = &priv->reg1f_init_val;

			else valptr = &tmpval;

			err = qt1010_init_meas1(priv, i2c_data[i+1].reg, i2c_data[i].reg,

						      i2c_data[i].val, valptr);

			i++;

			break;

		}

		if (err) return err;

	}



	for (i = 0x31; i < 0x3a; i++) /* 0x31 - 0x39 */

		if ((err = qt1010_init_meas2(priv, i, &tmpval)))

			return err;



	params.frequency = 545000000; /* Sigmatek DVB-110 545000000 */

				      /* MSI Megasky 580 GL861 533000000 */

	return qt1010_set_params(fe, &params);

}



static int qt1010_release(struct dvb_frontend *fe)

{

	kfree(fe->tuner_priv);

	fe->tuner_priv = NULL;

	return 0;

}



static int qt1010_get_frequency(struct dvb_frontend *fe, u32 *frequency)

{

	struct qt1010_priv *priv = fe->tuner_priv;

	*frequency = priv->frequency;

	return 0;

}



static int qt1010_get_bandwidth(struct dvb_frontend *fe, u32 *bandwidth)

{

	struct qt1010_priv *priv = fe->tuner_priv;

	*bandwidth = priv->bandwidth;

	return 0;

}



static const struct dvb_tuner_ops qt1010_tuner_ops = {

	.info = {

		.name           = "Quantek QT1010",

		.frequency_min  = QT1010_MIN_FREQ,

		.frequency_max  = QT1010_MAX_FREQ,

		.frequency_step = QT1010_STEP,

	},



	.release       = qt1010_release,

	.init          = qt1010_init,

	/* TODO: implement sleep */



	.set_params    = qt1010_set_params,

	.get_frequency = qt1010_get_frequency,

	.get_bandwidth = qt1010_get_bandwidth

};



struct dvb_frontend * qt1010_attach(struct dvb_frontend *fe,

				    struct i2c_adapter *i2c,

				    struct qt1010_config *cfg)

{

	struct qt1010_priv *priv = NULL;

	u8 id;



	priv = kzalloc(sizeof(struct qt1010_priv), GFP_KERNEL);

	if (priv == NULL)

		return NULL;



	priv->cfg      = cfg;

	priv->i2c      = i2c;





	/* Try to detect tuner chip. Probably this is not correct register. */

	if (qt1010_readreg(priv, 0x29, &id) != 0 || (id != 0x39)) {

		kfree(priv);

		return NULL;

	}



	printk(KERN_INFO "Quantek QT1010 successfully identified.\n");

	memcpy(&fe->ops.tuner_ops, &qt1010_tuner_ops, sizeof(struct dvb_tuner_ops));



	fe->tuner_priv = priv;

	return fe;

}

EXPORT_SYMBOL(qt1010_attach);



MODULE_DESCRIPTION("Quantek QT1010 silicon tuner driver");

MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>");

MODULE_AUTHOR("Aapo Tahkola <aet@rasterburn.org>");

MODULE_VERSION("0.1");

MODULE_LICENSE("GPL");

drivers/media/dvb/frontends/qt1010.h

+30 −203
Original line number Diff line number Diff line 
/*

 *  qt1010.h - DVB-T Tuner support

 *  Driver for Quantek QT1010 silicon tuner

 *

 *  Copyright (C) 2006 Antti Palosaari <crope@iki.fi>

 *                     Aapo Tahkola <aet@rasterburn.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
@@ -16,211 +19,35 @@ 
 *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.

 */



#ifndef _QT1010_H_

#define _QT1010_H_

#ifndef QT1010_H

#define QT1010_H



#define QT1010_W 0

#define QT1010_R 1

/* Not actual hw limits. */

#define QT1010_MIN_STEP 2000000

#define QT1010_MIN_FREQ 48000000

#include "dvb_frontend.h"



static int qt1010_set_params(struct dvb_frontend *fe, struct dvb_frontend_parameters *params)

{

	int i;

	int div, mod;

	struct {

		u8 read, reg, value;

	} rd[46] = {	{ QT1010_W, 0x01, 0x80 },

			{ QT1010_W, 0x02, 0x3f },

			{ QT1010_W, 0x05, 0xff }, /* c */

			{ QT1010_W, 0x06, 0x44 },

			{ QT1010_W, 0x07, 0xff }, /* c */

			{ QT1010_W, 0x08, 0x08 },

			{ QT1010_W, 0x09, 0xff }, /* c */

			{ QT1010_W, 0x0a, 0xff }, /* c */

			{ QT1010_W, 0x0b, 0xff }, /* c */

			{ QT1010_W, 0x0c, 0xe1 },

			{ QT1010_W, 0x1a, 0xff }, /* 10 c */

			{ QT1010_W, 0x1b, 0x00 },

			{ QT1010_W, 0x1c, 0x89 },

			{ QT1010_W, 0x11, 0xff }, /* c */

			{ QT1010_W, 0x12, 0x91 },

			{ QT1010_W, 0x22, 0xff }, /* c */

			{ QT1010_W, 0x1e, 0x00 },

			{ QT1010_W, 0x1e, 0xd0 },

			{ QT1010_R, 0x22, 0xff }, /* c read */

			{ QT1010_W, 0x1e, 0x00 },

			{ QT1010_R, 0x05, 0xff }, /* 20 c read */

			{ QT1010_R, 0x22, 0xff }, /* c read */

			{ QT1010_W, 0x23, 0xd0 },

			{ QT1010_W, 0x1e, 0x00 },

			{ QT1010_W, 0x1e, 0xe0 },

			{ QT1010_R, 0x23, 0xff }, /* c read */

			{ QT1010_W, 0x1e, 0x00 },

			{ QT1010_W, 0x24, 0xd0 },

			{ QT1010_W, 0x1e, 0x00 },

			{ QT1010_W, 0x1e, 0xf0 },

			{ QT1010_R, 0x24, 0xff }, /* 30 c read */

			{ QT1010_W, 0x1e, 0x00 },

			{ QT1010_W, 0x14, 0x7f },

			{ QT1010_W, 0x15, 0x7f },

			{ QT1010_W, 0x05, 0xff }, /* c */

			{ QT1010_W, 0x06, 0x00 },

			{ QT1010_W, 0x15, 0x1f },

			{ QT1010_W, 0x16, 0xff },

			{ QT1010_W, 0x18, 0xff },

			{ QT1010_W, 0x1f, 0xff }, /* c */

			{ QT1010_W, 0x20, 0xff }, /* 40 c */

			{ QT1010_W, 0x21, 0x53 },

			{ QT1010_W, 0x25, 0xbd },

			{ QT1010_W, 0x26, 0x15 },

			{ QT1010_W, 0x02, 0x00 },

			{ QT1010_W, 0x01, 0x00 },

struct qt1010_config {

	u8 i2c_address;

};

	struct i2c_msg msg;

	struct dvb_usb_adapter *adap = fe->dvb->priv;

	unsigned long freq = params->frequency;



	if (freq % QT1010_MIN_STEP)

		printk("frequency not supported.\n");



	div = (freq - QT1010_MIN_FREQ) / QT1010_MIN_STEP;

	mod = (div + 16 - 9) % 16;



	/* 0x5 */

	if (div >= 377)

		rd[2].value = 0x74;

	else if (div >=  265)

		rd[2].value = 0x54;

	else if (div >=  121)

		rd[2].value = 0x34;

	else

		rd[2].value = 0x14;



	/* 0x7 */

	rd[4].value = (((freq - QT1010_MIN_FREQ) / 1000000) * 9975 + 12960000) / 320000;



	/* 09 */

	if (mod < 4)

		rd[6].value = 0x1d;

	else

		rd[6].value = 0x1c;



	/* 0a */

	if (mod < 2)

		rd[7].value = 0x09;

	else if (mod < 4)

		rd[7].value = 0x08;

	else if (mod < 6)

		rd[7].value = 0x0f;

	else if (mod < 8)

		rd[7].value = 0x0e;

	else if (mod < 10)

		rd[7].value = 0x0d;

	else if (mod < 12)

		rd[7].value = 0x0c;

	else if (mod < 14)

		rd[7].value = 0x0b;

	else

		rd[7].value = 0x0a;



	/* 0b */

	if (div & 1)

		rd[8].value = 0x45;

	else

		rd[8].value = 0x44;



	/* 1a */

	if (div & 1)

		rd[10].value = 0x78;

	else

		rd[10].value = 0xf8;



	/* 11 */

	if (div >= 265)

		rd[13].value = 0xf9;

	else if (div >=  121)

		rd[13].value = 0xfd;

	else

		rd[13].value = 0xf9;



	/* 22 */

	if (div < 201)

		rd[15].value = 0xd0;

	else if (div < 217)

		rd[15].value = 0xd3;

	else if (div < 233)

		rd[15].value = 0xd6;

	else if (div < 249)

		rd[15].value = 0xd9;

	else if (div < 265)

		rd[15].value = 0xda;

	else

		rd[15].value = 0xd0;



	/* 05 */

	if (div >= 377)

		rd[34].value = 0x70;

	else if (div >=  265)

		rd[34].value = 0x50;

	else if (div >=  121)

		rd[34].value = 0x30;

	else

		rd[34].value = 0x10;



	/* 1f */

	if (mod < 4)

		rd[39].value = 0x64;

	else if (mod < 6)

		rd[39].value = 0x66;

	else if (mod < 8)

		rd[39].value = 0x67;

	else if (mod < 12)

		rd[39].value = 0x68;

	else if (mod < 14)

		rd[39].value = 0x69;

	else

		rd[39].value = 0x6a;



	/* 20 */

	if (mod < 4)

		rd[40].value = 0x10;

	else if (mod < 6)

		rd[40].value = 0x11;

	else if (mod < 10)

		rd[40].value = 0x12;

	else if (mod < 12)

		rd[40].value = 0x13;

	else if (mod < 14)

		rd[40].value = 0x14;

	else

		rd[40].value = 0x15;



	for (i = 0; i < sizeof(rd) / sizeof(*rd); i++) {

		if (rd[i].read)

			continue;



		msg.flags = 0;

		msg.len = 2;

		msg.addr = adap->dev->adapter[0].pll_addr;

		msg.buf = &rd[i].reg;



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

			printk("tuner write failed\n");

			return -EIO;

		}

	}



	return 0;

}



static int qt1010_tuner_attach(struct dvb_usb_adapter *adap)

/**

 * Attach a qt1010 tuner to the supplied frontend structure.

 *

 * @param fe   frontend to attach to

 * @param i2c  i2c adapter to use

 * @param cfg  tuner hw based configuration

 * @return fe  pointer on success, NULL on failure

 */

#if defined(CONFIG_DVB_TUNER_QT1010) || (defined(CONFIG_DVB_TUNER_QT1010_MODULE) && defined(MODULE))

extern struct dvb_frontend *qt1010_attach(struct dvb_frontend *fe,

					  struct i2c_adapter *i2c,

					  struct qt1010_config *cfg);

#else

static inline struct dvb_frontend *qt1010_attach(struct dvb_frontend *fe,

						 struct i2c_adapter *i2c,

						 struct qt1010_config *cfg)

{

	adap->pll_addr = 0xc4;

	adap->pll_desc = NULL;

	adap->fe->ops.tuner_ops.set_params = qt1010_set_params;



	return 0;

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

	return NULL;

}

#endif // CONFIG_DVB_TUNER_QT1010



#endif