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: NAntti Palosaari <crope@iki.fi>
Signed-off-by: NMichael Krufky <mkrufky@linuxtv.org>
Signed-off-by: NMauro Carvalho Chehab <mchehab@infradead.org>

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

@@ -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

@@ -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

@@ -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

+/*
+ *  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

 /*
- *  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_
-
-#define QT1010_W 0
-#define QT1010_R 1
-/* Not actual hw limits. */
-#define QT1010_MIN_STEP 2000000
-#define QT1010_MIN_FREQ 48000000
-
-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 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;
+#ifndef QT1010_H
+#define QT1010_H
 
-	/* 11 */
-	if (div >= 265)
-		rd[13].value = 0xf9;
-	else if (div >=  121)
-		rd[13].value = 0xfd;
-	else
-		rd[13].value = 0xf9;
+#include "dvb_frontend.h"
 
-	/* 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;
+struct qt1010_config {
+	u8 i2c_address;
+};
 
-	/* 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

drivers/media/dvb/frontends/qt1010_priv.h

+/*
+ *  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.
+ */
+
+#ifndef QT1010_PRIV_H
+#define QT1010_PRIV_H
+
+/*
+reg def meaning
+=== === =======
+00  00  ?
+01  a0  ? operation start/stop; start=80, stop=00
+02  00  ?
+03  19  ?
+04  00  ?
+05  00  ? maybe band selection
+06  00  ?
+07  2b  set frequency: 32 MHz scale, n*32 MHz
+08  0b  ?
+09  10  ? changes every 8/24 MHz; values 1d/1c
+0a  08  set frequency: 4 MHz scale, n*4 MHz
+0b  41  ? changes every 2/2 MHz; values 45/45
+0c  e1  ?
+0d  94  ?
+0e  b6  ?
+0f  2c  ?
+10  10  ?
+11  f1  ? maybe device specified adjustment
+12  11  ? maybe device specified adjustment
+13  3f  ?
+14  1f  ?
+15  3f  ?
+16  ff  ?
+17  ff  ?
+18  f7  ?
+19  80  ?
+1a  d0  set frequency: 125 kHz scale, n*125 kHz
+1b  00  ?
+1c  89  ?
+1d  00  ?
+1e  00  ? looks like operation register; write cmd here, read result from 1f-26
+1f  20  ? chip initialization
+20  e0  ? chip initialization
+21  20  ?
+22  d0  ?
+23  d0  ?
+24  d0  ?
+25  40  ? chip initialization
+26  08  ?
+27  29  ?
+28  55  ?
+29  39  ?
+2a  13  ?
+2b  01  ?
+2c  ea  ?
+2d  00  ?
+2e  00  ? not used?
+2f  00  ? not used?
+*/
+
+#define QT1010_STEP         125000 /*  125 kHz used by Windows drivers,
+				      hw could be more precise but we don't
+				      know how to use */
+#define QT1010_MIN_FREQ   48000000 /*   48 MHz */
+#define QT1010_MAX_FREQ  860000000 /*  860 MHz */
+#define QT1010_OFFSET   1246000000 /* 1246 MHz */
+
+#define QT1010_WR 0
+#define QT1010_RD 1
+#define QT1010_M1 3
+
+typedef struct {
+	u8 oper, reg, val;
+} qt1010_i2c_oper_t;
+
+struct qt1010_priv {
+	struct qt1010_config *cfg;
+	struct i2c_adapter   *i2c;
+
+	u8 reg1f_init_val;
+	u8 reg20_init_val;
+	u8 reg25_init_val;
+
+	u32 frequency;
+	u32 bandwidth;
+};
+
+#endif