[net-next-2.6.git] / drivers / media / dvb / frontends / stv6110x.c

/*
	STV6110(A) Silicon tuner driver

	Copyright (C) Manu Abraham <abraham.manu@gmail.com>

	Copyright (C) ST Microelectronics

	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/init.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/string.h>

#include "dvb_frontend.h"

#include "stv6110x_reg.h"
#include "stv6110x.h"
#include "stv6110x_priv.h"

static unsigned int verbose;
module_param(verbose, int, 0644);
MODULE_PARM_DESC(verbose, "Set Verbosity level");

static int stv6110x_read_reg(struct stv6110x_state *stv6110x, u8 reg, u8 *data)
{
	int ret;
	const struct stv6110x_config *config = stv6110x->config;
	u8 b0[] = { reg };
	u8 b1[] = { 0 };
	struct i2c_msg msg[] = {
		{ .addr = config->addr, .flags = 0, 	   .buf = b0, .len = 1 },
		{ .addr = config->addr, .flags = I2C_M_RD, .buf = b1, .len = 1 }
	};

	ret = i2c_transfer(stv6110x->i2c, msg, 2);
	if (ret != 2) {
		dprintk(FE_ERROR, 1, "I/O Error");
		return -EREMOTEIO;
	}
	*data = b1[0];

	return 0;
}

static int stv6110x_write_regs(struct stv6110x_state *stv6110x, int start, u8 data[], int len)
{
	int ret;
	const struct stv6110x_config *config = stv6110x->config;
	u8 buf[len + 1];
	struct i2c_msg msg = {
		.addr = config->addr,
		.flags = 0,
		.buf = buf,
		.len = len + 1
	};

	if (start + len > 8)
		return -EINVAL;

	buf[0] = start;
	memcpy(&buf[1], data, len);

	ret = i2c_transfer(stv6110x->i2c, &msg, 1);
	if (ret != 1) {
		dprintk(FE_ERROR, 1, "I/O Error");
		return -EREMOTEIO;
	}

	return 0;
}

static int stv6110x_write_reg(struct stv6110x_state *stv6110x, u8 reg, u8 data)
{
	return stv6110x_write_regs(stv6110x, reg, &data, 1);
}

static int stv6110x_init(struct dvb_frontend *fe)
{
	struct stv6110x_state *stv6110x = fe->tuner_priv;
	int ret;

	ret = stv6110x_write_regs(stv6110x, 0, stv6110x->regs,
				  ARRAY_SIZE(stv6110x->regs));
	if (ret < 0) {
		dprintk(FE_ERROR, 1, "Initialization failed");
		return -1;
	}

	return 0;
}

static int stv6110x_set_frequency(struct dvb_frontend *fe, u32 frequency)
{
	struct stv6110x_state *stv6110x = fe->tuner_priv;
	u32 rDiv, divider;
	s32 pVal, pCalc, rDivOpt = 0, pCalcOpt = 1000;
	u8 i;

	STV6110x_SETFIELD(stv6110x->regs[STV6110x_CTRL1], CTRL1_K, (REFCLOCK_MHz - 16));

	if (frequency <= 1023000) {
		STV6110x_SETFIELD(stv6110x->regs[STV6110x_TNG1], TNG1_DIV4SEL, 1);
		STV6110x_SETFIELD(stv6110x->regs[STV6110x_TNG1], TNG1_PRESC32_ON, 0);
		pVal = 40;
	} else if (frequency <= 1300000) {
		STV6110x_SETFIELD(stv6110x->regs[STV6110x_TNG1], TNG1_DIV4SEL, 1);
		STV6110x_SETFIELD(stv6110x->regs[STV6110x_TNG1], TNG1_PRESC32_ON, 1);
		pVal = 40;
	} else if (frequency <= 2046000) {
		STV6110x_SETFIELD(stv6110x->regs[STV6110x_TNG1], TNG1_DIV4SEL, 0);
		STV6110x_SETFIELD(stv6110x->regs[STV6110x_TNG1], TNG1_PRESC32_ON, 0);
		pVal = 20;
	} else {
		STV6110x_SETFIELD(stv6110x->regs[STV6110x_TNG1], TNG1_DIV4SEL, 0);
		STV6110x_SETFIELD(stv6110x->regs[STV6110x_TNG1], TNG1_PRESC32_ON, 1);
		pVal = 20;
	}

	for (rDiv = 0; rDiv <= 3; rDiv++) {
		pCalc = (REFCLOCK_kHz / 100) / R_DIV(rDiv);

		if ((abs((s32)(pCalc - pVal))) < (abs((s32)(pCalcOpt - pVal))))
			rDivOpt = rDiv;

		pCalcOpt = (REFCLOCK_kHz / 100) / R_DIV(rDivOpt);
	}

	divider = (frequency * R_DIV(rDivOpt) * pVal) / REFCLOCK_kHz;
	divider = (divider + 5) / 10;

	STV6110x_SETFIELD(stv6110x->regs[STV6110x_TNG1], TNG1_R_DIV, rDivOpt);
	STV6110x_SETFIELD(stv6110x->regs[STV6110x_TNG1], TNG1_N_DIV_11_8, MSB(divider));
	STV6110x_SETFIELD(stv6110x->regs[STV6110x_TNG0], TNG0_N_DIV_7_0, LSB(divider));

	/* VCO Auto calibration */
	STV6110x_SETFIELD(stv6110x->regs[STV6110x_STAT1], STAT1_CALVCO_STRT, 1);

	stv6110x_write_reg(stv6110x, STV6110x_CTRL1, stv6110x->regs[STV6110x_CTRL1]);
	stv6110x_write_reg(stv6110x, STV6110x_TNG1, stv6110x->regs[STV6110x_TNG1]);
	stv6110x_write_reg(stv6110x, STV6110x_TNG0, stv6110x->regs[STV6110x_TNG0]);
	stv6110x_write_reg(stv6110x, STV6110x_STAT1, stv6110x->regs[STV6110x_STAT1]);

	for (i = 0; i < TRIALS; i++) {
		stv6110x_read_reg(stv6110x, STV6110x_STAT1, &stv6110x->regs[STV6110x_STAT1]);
		if (!STV6110x_GETFIELD(STAT1_CALVCO_STRT, stv6110x->regs[STV6110x_STAT1]))
				break;
		msleep(1);
	}

	return 0;
}

static int stv6110x_get_frequency(struct dvb_frontend *fe, u32 *frequency)
{
	struct stv6110x_state *stv6110x = fe->tuner_priv;

	stv6110x_read_reg(stv6110x, STV6110x_TNG1, &stv6110x->regs[STV6110x_TNG1]);
	stv6110x_read_reg(stv6110x, STV6110x_TNG0, &stv6110x->regs[STV6110x_TNG0]);

	*frequency = (MAKEWORD16(STV6110x_GETFIELD(TNG1_N_DIV_11_8, stv6110x->regs[STV6110x_TNG1]),
				 STV6110x_GETFIELD(TNG0_N_DIV_7_0, stv6110x->regs[STV6110x_TNG0]))) * REFCLOCK_kHz;

	*frequency /= (1 << (STV6110x_GETFIELD(TNG1_R_DIV, stv6110x->regs[STV6110x_TNG1]) +
			     STV6110x_GETFIELD(TNG1_DIV4SEL, stv6110x->regs[STV6110x_TNG1])));

	*frequency >>= 2;

	return 0;
}

static int stv6110x_set_bandwidth(struct dvb_frontend *fe, u32 bandwidth)
{
	struct stv6110x_state *stv6110x = fe->tuner_priv;
	u32 halfbw;
	u8 i;

	halfbw = bandwidth >> 1;

	if (halfbw > 36000000)
		STV6110x_SETFIELD(stv6110x->regs[STV6110x_CTRL3], CTRL3_CF, 31); /* LPF */
	else if (halfbw < 5000000)
		STV6110x_SETFIELD(stv6110x->regs[STV6110x_CTRL3], CTRL3_CF, 0); /* LPF */
	else
		STV6110x_SETFIELD(stv6110x->regs[STV6110x_CTRL3], CTRL3_CF, ((halfbw / 1000000) - 5)); /* LPF */


	STV6110x_SETFIELD(stv6110x->regs[STV6110x_CTRL3], CTRL3_RCCLK_OFF, 0x0); /* cal. clk activated */
	STV6110x_SETFIELD(stv6110x->regs[STV6110x_STAT1], STAT1_CALRC_STRT, 0x1); /* LPF auto cal */

	stv6110x_write_reg(stv6110x, STV6110x_CTRL3, stv6110x->regs[STV6110x_CTRL3]);
	stv6110x_write_reg(stv6110x, STV6110x_STAT1, stv6110x->regs[STV6110x_STAT1]);

	for (i = 0; i < TRIALS; i++) {
		stv6110x_read_reg(stv6110x, STV6110x_STAT1, &stv6110x->regs[STV6110x_STAT1]);
		if (!STV6110x_GETFIELD(STAT1_CALRC_STRT, stv6110x->regs[STV6110x_STAT1]))
			break;
		msleep(1);
	}
	STV6110x_SETFIELD(stv6110x->regs[STV6110x_CTRL3], CTRL3_RCCLK_OFF, 0x1); /* cal. done */
	stv6110x_write_reg(stv6110x, STV6110x_CTRL3, stv6110x->regs[STV6110x_CTRL3]);

	return 0;
}

static int stv6110x_get_bandwidth(struct dvb_frontend *fe, u32 *bandwidth)
{
	struct stv6110x_state *stv6110x = fe->tuner_priv;

	stv6110x_read_reg(stv6110x, STV6110x_CTRL3, &stv6110x->regs[STV6110x_CTRL3]);
	*bandwidth = (STV6110x_GETFIELD(CTRL3_CF, stv6110x->regs[STV6110x_CTRL3]) + 5) * 2000000;

	return 0;
}

static int stv6110x_set_refclock(struct dvb_frontend *fe, u32 refclock)
{
	struct stv6110x_state *stv6110x = fe->tuner_priv;

	/* setup divider */
	switch (refclock) {
	default:
	case 1:
		STV6110x_SETFIELD(stv6110x->regs[STV6110x_CTRL2], CTRL2_CO_DIV, 0);
		break;
	case 2:
		STV6110x_SETFIELD(stv6110x->regs[STV6110x_CTRL2], CTRL2_CO_DIV, 1);
		break;
	case 4:
		STV6110x_SETFIELD(stv6110x->regs[STV6110x_CTRL2], CTRL2_CO_DIV, 2);
		break;
	case 8:
	case 0:
		STV6110x_SETFIELD(stv6110x->regs[STV6110x_CTRL2], CTRL2_CO_DIV, 3);
		break;
	}
	stv6110x_write_reg(stv6110x, STV6110x_CTRL2, stv6110x->regs[STV6110x_CTRL2]);

	return 0;
}

static int stv6110x_get_bbgain(struct dvb_frontend *fe, u32 *gain)
{
	struct stv6110x_state *stv6110x = fe->tuner_priv;

	stv6110x_read_reg(stv6110x, STV6110x_CTRL2, &stv6110x->regs[STV6110x_CTRL2]);
	*gain = 2 * STV6110x_GETFIELD(CTRL2_BBGAIN, stv6110x->regs[STV6110x_CTRL2]);

	return 0;
}

static int stv6110x_set_bbgain(struct dvb_frontend *fe, u32 gain)
{
	struct stv6110x_state *stv6110x = fe->tuner_priv;

	STV6110x_SETFIELD(stv6110x->regs[STV6110x_CTRL2], CTRL2_BBGAIN, gain / 2);
	stv6110x_write_reg(stv6110x, STV6110x_CTRL2, stv6110x->regs[STV6110x_CTRL2]);

	return 0;
}

static int stv6110x_set_mode(struct dvb_frontend *fe, enum tuner_mode mode)
{
	struct stv6110x_state *stv6110x = fe->tuner_priv;
	int ret;

	switch (mode) {
	case TUNER_SLEEP:
		STV6110x_SETFIELD(stv6110x->regs[STV6110x_CTRL1], CTRL1_SYN, 0);
		STV6110x_SETFIELD(stv6110x->regs[STV6110x_CTRL1], CTRL1_RX, 0);
		STV6110x_SETFIELD(stv6110x->regs[STV6110x_CTRL1], CTRL1_LPT, 0);
		break;

	case TUNER_WAKE:
		STV6110x_SETFIELD(stv6110x->regs[STV6110x_CTRL1], CTRL1_SYN, 1);
		STV6110x_SETFIELD(stv6110x->regs[STV6110x_CTRL1], CTRL1_RX, 1);
		STV6110x_SETFIELD(stv6110x->regs[STV6110x_CTRL1], CTRL1_LPT, 1);
		break;
	}

	ret = stv6110x_write_reg(stv6110x, STV6110x_CTRL1, stv6110x->regs[STV6110x_CTRL1]);
	if (ret < 0) {
		dprintk(FE_ERROR, 1, "I/O Error");
		return -EIO;
	}

	return 0;
}

static int stv6110x_sleep(struct dvb_frontend *fe)
{
	if (fe->tuner_priv)
		return stv6110x_set_mode(fe, TUNER_SLEEP);

	return 0;
}

static int stv6110x_get_status(struct dvb_frontend *fe, u32 *status)
{
	struct stv6110x_state *stv6110x = fe->tuner_priv;

	stv6110x_read_reg(stv6110x, STV6110x_STAT1, &stv6110x->regs[STV6110x_STAT1]);

	if (STV6110x_GETFIELD(STAT1_LOCK, stv6110x->regs[STV6110x_STAT1]))
		*status = TUNER_PHASELOCKED;
	else
		*status = 0;

	return 0;
}


static int stv6110x_release(struct dvb_frontend *fe)
{
	struct stv6110x_state *stv6110x = fe->tuner_priv;

	fe->tuner_priv = NULL;
	kfree(stv6110x);

	return 0;
}

static struct dvb_tuner_ops stv6110x_ops = {
	.info = {
		.name		= "STV6110(A) Silicon Tuner",
		.frequency_min	=  950000,
		.frequency_max	= 2150000,
		.frequency_step	= 0,
	},
	.release		= stv6110x_release
};

static struct stv6110x_devctl stv6110x_ctl = {
	.tuner_init		= stv6110x_init,
	.tuner_sleep		= stv6110x_sleep,
	.tuner_set_mode		= stv6110x_set_mode,
	.tuner_set_frequency	= stv6110x_set_frequency,
	.tuner_get_frequency	= stv6110x_get_frequency,
	.tuner_set_bandwidth	= stv6110x_set_bandwidth,
	.tuner_get_bandwidth	= stv6110x_get_bandwidth,
	.tuner_set_bbgain	= stv6110x_set_bbgain,
	.tuner_get_bbgain	= stv6110x_get_bbgain,
	.tuner_set_refclk	= stv6110x_set_refclock,
	.tuner_get_status	= stv6110x_get_status,
};

struct stv6110x_devctl *stv6110x_attach(struct dvb_frontend *fe,
					const struct stv6110x_config *config,
					struct i2c_adapter *i2c)
{
	struct stv6110x_state *stv6110x;
	u8 default_regs[] = {0x07, 0x11, 0xdc, 0x85, 0x17, 0x01, 0xe6, 0x1e};

	stv6110x = kzalloc(sizeof (struct stv6110x_state), GFP_KERNEL);
	if (!stv6110x)
		return NULL;

	stv6110x->i2c		= i2c;
	stv6110x->config	= config;
	stv6110x->devctl	= &stv6110x_ctl;
	memcpy(stv6110x->regs, default_regs, 8);

	/* setup divider */
	switch (stv6110x->config->clk_div) {
	default:
	case 1:
		STV6110x_SETFIELD(stv6110x->regs[STV6110x_CTRL2], CTRL2_CO_DIV, 0);
		break;
	case 2:
		STV6110x_SETFIELD(stv6110x->regs[STV6110x_CTRL2], CTRL2_CO_DIV, 1);
		break;
	case 4:
		STV6110x_SETFIELD(stv6110x->regs[STV6110x_CTRL2], CTRL2_CO_DIV, 2);
		break;
	case 8:
	case 0:
		STV6110x_SETFIELD(stv6110x->regs[STV6110x_CTRL2], CTRL2_CO_DIV, 3);
		break;
	}

	fe->tuner_priv		= stv6110x;
	fe->ops.tuner_ops	= stv6110x_ops;

	printk(KERN_INFO "%s: Attaching STV6110x\n", __func__);
	return stv6110x->devctl;
}
EXPORT_SYMBOL(stv6110x_attach);

MODULE_AUTHOR("Manu Abraham");
MODULE_DESCRIPTION("STV6110x Silicon tuner");
MODULE_LICENSE("GPL");
Commit	Line	Data
e415c689 MA	1	/*
	2	STV6110(A) Silicon tuner driver
	3
	4	Copyright (C) Manu Abraham <abraham.manu@gmail.com>
	5
	6	Copyright (C) ST Microelectronics
	7
	8	This program is free software; you can redistribute it and/or modify
	9	it under the terms of the GNU General Public License as published by
	10	the Free Software Foundation; either version 2 of the License, or
	11	(at your option) any later version.
	12
	13	This program is distributed in the hope that it will be useful,
	14	but WITHOUT ANY WARRANTY; without even the implied warranty of
	15	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	16	GNU General Public License for more details.
	17
	18	You should have received a copy of the GNU General Public License
	19	along with this program; if not, write to the Free Software
	20	Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
	21	*/
	22
	23	#include <linux/init.h>
	24	#include <linux/kernel.h>
	25	#include <linux/module.h>
5a0e3ad6	26	#include <linux/slab.h>
e415c689 MA	27	#include <linux/string.h>
	28
	29	#include "dvb_frontend.h"
	30
	31	#include "stv6110x_reg.h"
	32	#include "stv6110x.h"
	33	#include "stv6110x_priv.h"
	34
	35	static unsigned int verbose;
	36	module_param(verbose, int, 0644);
	37	MODULE_PARM_DESC(verbose, "Set Verbosity level");
	38
e415c689 MA	39	static int stv6110x_read_reg(struct stv6110x_state stv6110x, u8 reg, u8 data)
	40	{
	41	int ret;
	42	const struct stv6110x_config *config = stv6110x->config;
	43	u8 b0[] = { reg };
	44	u8 b1[] = { 0 };
	45	struct i2c_msg msg[] = {
	46	{ .addr = config->addr, .flags = 0, .buf = b0, .len = 1 },
	47	{ .addr = config->addr, .flags = I2C_M_RD, .buf = b1, .len = 1 }
	48	};
	49
	50	ret = i2c_transfer(stv6110x->i2c, msg, 2);
	51	if (ret != 2) {
	52	dprintk(FE_ERROR, 1, "I/O Error");
	53	return -EREMOTEIO;
	54	}
f2b2fd40	55	*data = b1[0];
e415c689 MA	56
	57	return 0;
	58	}
	59
0c3f9fd8	60	static int stv6110x_write_regs(struct stv6110x_state *stv6110x, int start, u8 data[], int len)
e415c689 MA	61	{
	62	int ret;
	63	const struct stv6110x_config *config = stv6110x->config;
0c3f9fd8 AR	64	u8 buf[len + 1];
	65	struct i2c_msg msg = {
	66	.addr = config->addr,
	67	.flags = 0,
	68	.buf = buf,
	69	.len = len + 1
	70	};
	71
	72	if (start + len > 8)
	73	return -EINVAL;
	74
	75	buf[0] = start;
	76	memcpy(&buf[1], data, len);
e415c689 MA	77
	78	ret = i2c_transfer(stv6110x->i2c, &msg, 1);
	79	if (ret != 1) {
	80	dprintk(FE_ERROR, 1, "I/O Error");
	81	return -EREMOTEIO;
	82	}
	83
	84	return 0;
	85	}
	86
0c3f9fd8 AR	87	static int stv6110x_write_reg(struct stv6110x_state *stv6110x, u8 reg, u8 data)
	88	{
	89	return stv6110x_write_regs(stv6110x, reg, &data, 1);
	90	}
	91
e415c689 MA	92	static int stv6110x_init(struct dvb_frontend *fe)
	93	{
	94	struct stv6110x_state *stv6110x = fe->tuner_priv;
	95	int ret;
e415c689	96
ec2d3a62 AR	97	ret = stv6110x_write_regs(stv6110x, 0, stv6110x->regs,
ec2d3a62 AR	98	ARRAY_SIZE(stv6110x->regs));
0c3f9fd8 AR	99	if (ret < 0) {
	100	dprintk(FE_ERROR, 1, "Initialization failed");
	101	return -1;
e415c689 MA	102	}
	103
	104	return 0;
	105	}
	106
	107	static int stv6110x_set_frequency(struct dvb_frontend *fe, u32 frequency)
	108	{
	109	struct stv6110x_state *stv6110x = fe->tuner_priv;
	110	u32 rDiv, divider;
7c236e37	111	s32 pVal, pCalc, rDivOpt = 0, pCalcOpt = 1000;
e415c689 MA	112	u8 i;
e415c689 MA	113
ec2d3a62	114	STV6110x_SETFIELD(stv6110x->regs[STV6110x_CTRL1], CTRL1_K, (REFCLOCK_MHz - 16));
e415c689 MA	115
e415c689 MA	116	if (frequency <= 1023000) {
ec2d3a62 AR	117	STV6110x_SETFIELD(stv6110x->regs[STV6110x_TNG1], TNG1_DIV4SEL, 1);
ec2d3a62 AR	118	STV6110x_SETFIELD(stv6110x->regs[STV6110x_TNG1], TNG1_PRESC32_ON, 0);
e415c689 MA	119	pVal = 40;
e415c689 MA	120	} else if (frequency <= 1300000) {
ec2d3a62 AR	121	STV6110x_SETFIELD(stv6110x->regs[STV6110x_TNG1], TNG1_DIV4SEL, 1);
ec2d3a62 AR	122	STV6110x_SETFIELD(stv6110x->regs[STV6110x_TNG1], TNG1_PRESC32_ON, 1);
e415c689 MA	123	pVal = 40;
e415c689 MA	124	} else if (frequency <= 2046000) {
ec2d3a62 AR	125	STV6110x_SETFIELD(stv6110x->regs[STV6110x_TNG1], TNG1_DIV4SEL, 0);
ec2d3a62 AR	126	STV6110x_SETFIELD(stv6110x->regs[STV6110x_TNG1], TNG1_PRESC32_ON, 0);
e415c689 MA	127	pVal = 20;
e415c689 MA	128	} else {
ec2d3a62 AR	129	STV6110x_SETFIELD(stv6110x->regs[STV6110x_TNG1], TNG1_DIV4SEL, 0);
ec2d3a62 AR	130	STV6110x_SETFIELD(stv6110x->regs[STV6110x_TNG1], TNG1_PRESC32_ON, 1);
e415c689 MA	131	pVal = 20;
	132	}
	133
	134	for (rDiv = 0; rDiv <= 3; rDiv++) {
	135	pCalc = (REFCLOCK_kHz / 100) / R_DIV(rDiv);
	136
7c236e37	137	if ((abs((s32)(pCalc - pVal))) < (abs((s32)(pCalcOpt - pVal))))
e415c689	138	rDivOpt = rDiv;
7c236e37 AR	139
7c236e37 AR	140	pCalcOpt = (REFCLOCK_kHz / 100) / R_DIV(rDivOpt);
e415c689 MA	141	}
	142
	143	divider = (frequency * R_DIV(rDivOpt) * pVal) / REFCLOCK_kHz;
	144	divider = (divider + 5) / 10;
	145
ec2d3a62 AR	146	STV6110x_SETFIELD(stv6110x->regs[STV6110x_TNG1], TNG1_R_DIV, rDivOpt);
	147	STV6110x_SETFIELD(stv6110x->regs[STV6110x_TNG1], TNG1_N_DIV_11_8, MSB(divider));
	148	STV6110x_SETFIELD(stv6110x->regs[STV6110x_TNG0], TNG0_N_DIV_7_0, LSB(divider));
e415c689 MA	149
e415c689 MA	150	/* VCO Auto calibration */
ec2d3a62	151	STV6110x_SETFIELD(stv6110x->regs[STV6110x_STAT1], STAT1_CALVCO_STRT, 1);
e415c689	152
ec2d3a62 AR	153	stv6110x_write_reg(stv6110x, STV6110x_CTRL1, stv6110x->regs[STV6110x_CTRL1]);
	154	stv6110x_write_reg(stv6110x, STV6110x_TNG1, stv6110x->regs[STV6110x_TNG1]);
	155	stv6110x_write_reg(stv6110x, STV6110x_TNG0, stv6110x->regs[STV6110x_TNG0]);
	156	stv6110x_write_reg(stv6110x, STV6110x_STAT1, stv6110x->regs[STV6110x_STAT1]);
e415c689 MA	157
e415c689 MA	158	for (i = 0; i < TRIALS; i++) {
ec2d3a62 AR	159	stv6110x_read_reg(stv6110x, STV6110x_STAT1, &stv6110x->regs[STV6110x_STAT1]);
ec2d3a62 AR	160	if (!STV6110x_GETFIELD(STAT1_CALVCO_STRT, stv6110x->regs[STV6110x_STAT1]))
e415c689 MA	161	break;
	162	msleep(1);
	163	}
	164
	165	return 0;
	166	}
	167
	168	static int stv6110x_get_frequency(struct dvb_frontend fe, u32 frequency)
	169	{
	170	struct stv6110x_state *stv6110x = fe->tuner_priv;
	171
ec2d3a62 AR	172	stv6110x_read_reg(stv6110x, STV6110x_TNG1, &stv6110x->regs[STV6110x_TNG1]);
ec2d3a62 AR	173	stv6110x_read_reg(stv6110x, STV6110x_TNG0, &stv6110x->regs[STV6110x_TNG0]);
e415c689	174
ec2d3a62 AR	175	*frequency = (MAKEWORD16(STV6110x_GETFIELD(TNG1_N_DIV_11_8, stv6110x->regs[STV6110x_TNG1]),
ec2d3a62 AR	176	STV6110x_GETFIELD(TNG0_N_DIV_7_0, stv6110x->regs[STV6110x_TNG0]))) * REFCLOCK_kHz;
e415c689	177
ec2d3a62 AR	178	*frequency /= (1 << (STV6110x_GETFIELD(TNG1_R_DIV, stv6110x->regs[STV6110x_TNG1]) +
ec2d3a62 AR	179	STV6110x_GETFIELD(TNG1_DIV4SEL, stv6110x->regs[STV6110x_TNG1])));
e415c689 MA	180
	181	*frequency >>= 2;
	182
	183	return 0;
	184	}
	185
	186	static int stv6110x_set_bandwidth(struct dvb_frontend *fe, u32 bandwidth)
	187	{
	188	struct stv6110x_state *stv6110x = fe->tuner_priv;
	189	u32 halfbw;
	190	u8 i;
	191
	192	halfbw = bandwidth >> 1;
	193
	194	if (halfbw > 36000000)
ec2d3a62	195	STV6110x_SETFIELD(stv6110x->regs[STV6110x_CTRL3], CTRL3_CF, 31); /* LPF */
e415c689	196	else if (halfbw < 5000000)
ec2d3a62	197	STV6110x_SETFIELD(stv6110x->regs[STV6110x_CTRL3], CTRL3_CF, 0); /* LPF */
e415c689	198	else
ec2d3a62	199	STV6110x_SETFIELD(stv6110x->regs[STV6110x_CTRL3], CTRL3_CF, ((halfbw / 1000000) - 5)); /* LPF */
e415c689 MA	200
e415c689 MA	201
ec2d3a62 AR	202	STV6110x_SETFIELD(stv6110x->regs[STV6110x_CTRL3], CTRL3_RCCLK_OFF, 0x0); /* cal. clk activated */
ec2d3a62 AR	203	STV6110x_SETFIELD(stv6110x->regs[STV6110x_STAT1], STAT1_CALRC_STRT, 0x1); /* LPF auto cal */
e415c689	204
ec2d3a62 AR	205	stv6110x_write_reg(stv6110x, STV6110x_CTRL3, stv6110x->regs[STV6110x_CTRL3]);
ec2d3a62 AR	206	stv6110x_write_reg(stv6110x, STV6110x_STAT1, stv6110x->regs[STV6110x_STAT1]);
e415c689 MA	207
e415c689 MA	208	for (i = 0; i < TRIALS; i++) {
ec2d3a62 AR	209	stv6110x_read_reg(stv6110x, STV6110x_STAT1, &stv6110x->regs[STV6110x_STAT1]);
ec2d3a62 AR	210	if (!STV6110x_GETFIELD(STAT1_CALRC_STRT, stv6110x->regs[STV6110x_STAT1]))
e415c689 MA	211	break;
	212	msleep(1);
	213	}
ec2d3a62 AR	214	STV6110x_SETFIELD(stv6110x->regs[STV6110x_CTRL3], CTRL3_RCCLK_OFF, 0x1); /* cal. done */
ec2d3a62 AR	215	stv6110x_write_reg(stv6110x, STV6110x_CTRL3, stv6110x->regs[STV6110x_CTRL3]);
e415c689 MA	216
	217	return 0;
	218	}
	219
	220	static int stv6110x_get_bandwidth(struct dvb_frontend fe, u32 bandwidth)
	221	{
	222	struct stv6110x_state *stv6110x = fe->tuner_priv;
	223
ec2d3a62 AR	224	stv6110x_read_reg(stv6110x, STV6110x_CTRL3, &stv6110x->regs[STV6110x_CTRL3]);
ec2d3a62 AR	225	bandwidth = (STV6110x_GETFIELD(CTRL3_CF, stv6110x->regs[STV6110x_CTRL3]) + 5) 2000000;
e415c689 MA	226
	227	return 0;
	228	}
	229
	230	static int stv6110x_set_refclock(struct dvb_frontend *fe, u32 refclock)
	231	{
	232	struct stv6110x_state *stv6110x = fe->tuner_priv;
	233
	234	/* setup divider */
	235	switch (refclock) {
	236	default:
	237	case 1:
ec2d3a62	238	STV6110x_SETFIELD(stv6110x->regs[STV6110x_CTRL2], CTRL2_CO_DIV, 0);
e415c689 MA	239	break;
e415c689 MA	240	case 2:
ec2d3a62	241	STV6110x_SETFIELD(stv6110x->regs[STV6110x_CTRL2], CTRL2_CO_DIV, 1);
e415c689 MA	242	break;
e415c689 MA	243	case 4:
ec2d3a62	244	STV6110x_SETFIELD(stv6110x->regs[STV6110x_CTRL2], CTRL2_CO_DIV, 2);
e415c689 MA	245	break;
	246	case 8:
	247	case 0:
ec2d3a62	248	STV6110x_SETFIELD(stv6110x->regs[STV6110x_CTRL2], CTRL2_CO_DIV, 3);
e415c689 MA	249	break;
e415c689 MA	250	}
ec2d3a62	251	stv6110x_write_reg(stv6110x, STV6110x_CTRL2, stv6110x->regs[STV6110x_CTRL2]);
e415c689 MA	252
	253	return 0;
	254	}
	255
	256	static int stv6110x_get_bbgain(struct dvb_frontend fe, u32 gain)
	257	{
	258	struct stv6110x_state *stv6110x = fe->tuner_priv;
	259
ec2d3a62 AR	260	stv6110x_read_reg(stv6110x, STV6110x_CTRL2, &stv6110x->regs[STV6110x_CTRL2]);
ec2d3a62 AR	261	gain = 2 STV6110x_GETFIELD(CTRL2_BBGAIN, stv6110x->regs[STV6110x_CTRL2]);
e415c689 MA	262
	263	return 0;
	264	}
	265
	266	static int stv6110x_set_bbgain(struct dvb_frontend *fe, u32 gain)
	267	{
	268	struct stv6110x_state *stv6110x = fe->tuner_priv;
	269
ec2d3a62 AR	270	STV6110x_SETFIELD(stv6110x->regs[STV6110x_CTRL2], CTRL2_BBGAIN, gain / 2);
ec2d3a62 AR	271	stv6110x_write_reg(stv6110x, STV6110x_CTRL2, stv6110x->regs[STV6110x_CTRL2]);
e415c689 MA	272
	273	return 0;
	274	}
	275
	276	static int stv6110x_set_mode(struct dvb_frontend *fe, enum tuner_mode mode)
	277	{
	278	struct stv6110x_state *stv6110x = fe->tuner_priv;
	279	int ret;
	280
	281	switch (mode) {
	282	case TUNER_SLEEP:
ec2d3a62 AR	283	STV6110x_SETFIELD(stv6110x->regs[STV6110x_CTRL1], CTRL1_SYN, 0);
	284	STV6110x_SETFIELD(stv6110x->regs[STV6110x_CTRL1], CTRL1_RX, 0);
	285	STV6110x_SETFIELD(stv6110x->regs[STV6110x_CTRL1], CTRL1_LPT, 0);
e415c689 MA	286	break;
	287
	288	case TUNER_WAKE:
ec2d3a62 AR	289	STV6110x_SETFIELD(stv6110x->regs[STV6110x_CTRL1], CTRL1_SYN, 1);
	290	STV6110x_SETFIELD(stv6110x->regs[STV6110x_CTRL1], CTRL1_RX, 1);
	291	STV6110x_SETFIELD(stv6110x->regs[STV6110x_CTRL1], CTRL1_LPT, 1);
e415c689 MA	292	break;
	293	}
	294
ec2d3a62	295	ret = stv6110x_write_reg(stv6110x, STV6110x_CTRL1, stv6110x->regs[STV6110x_CTRL1]);
e415c689 MA	296	if (ret < 0) {
	297	dprintk(FE_ERROR, 1, "I/O Error");
	298	return -EIO;
	299	}
	300
	301	return 0;
	302	}
	303
	304	static int stv6110x_sleep(struct dvb_frontend *fe)
	305	{
e65f8c4e GM	306	if (fe->tuner_priv)
	307	return stv6110x_set_mode(fe, TUNER_SLEEP);
	308
	309	return 0;
e415c689 MA	310	}
	311
	312	static int stv6110x_get_status(struct dvb_frontend fe, u32 status)
	313	{
	314	struct stv6110x_state *stv6110x = fe->tuner_priv;
	315
ec2d3a62	316	stv6110x_read_reg(stv6110x, STV6110x_STAT1, &stv6110x->regs[STV6110x_STAT1]);
e415c689	317
ec2d3a62	318	if (STV6110x_GETFIELD(STAT1_LOCK, stv6110x->regs[STV6110x_STAT1]))
e415c689 MA	319	*status = TUNER_PHASELOCKED;
	320	else
	321	*status = 0;
	322
	323	return 0;
	324	}
	325
	326
	327	static int stv6110x_release(struct dvb_frontend *fe)
	328	{
	329	struct stv6110x_state *stv6110x = fe->tuner_priv;
	330
	331	fe->tuner_priv = NULL;
	332	kfree(stv6110x);
	333
	334	return 0;
	335	}
	336
	337	static struct dvb_tuner_ops stv6110x_ops = {
	338	.info = {
	339	.name = "STV6110(A) Silicon Tuner",
	340	.frequency_min = 950000,
	341	.frequency_max = 2150000,
	342	.frequency_step = 0,
	343	},
e415c689 MA	344	.release = stv6110x_release
	345	};
	346
	347	static struct stv6110x_devctl stv6110x_ctl = {
	348	.tuner_init = stv6110x_init,
c5b74b0f	349	.tuner_sleep = stv6110x_sleep,
e415c689 MA	350	.tuner_set_mode = stv6110x_set_mode,
	351	.tuner_set_frequency = stv6110x_set_frequency,
	352	.tuner_get_frequency = stv6110x_get_frequency,
	353	.tuner_set_bandwidth = stv6110x_set_bandwidth,
	354	.tuner_get_bandwidth = stv6110x_get_bandwidth,
	355	.tuner_set_bbgain = stv6110x_set_bbgain,
	356	.tuner_get_bbgain = stv6110x_get_bbgain,
	357	.tuner_set_refclk = stv6110x_set_refclock,
	358	.tuner_get_status = stv6110x_get_status,
	359	};
	360
	361	struct stv6110x_devctl stv6110x_attach(struct dvb_frontend fe,
	362	const struct stv6110x_config *config,
	363	struct i2c_adapter *i2c)
	364	{
	365	struct stv6110x_state *stv6110x;
ec2d3a62	366	u8 default_regs[] = {0x07, 0x11, 0xdc, 0x85, 0x17, 0x01, 0xe6, 0x1e};
e415c689 MA	367
e415c689 MA	368	stv6110x = kzalloc(sizeof (struct stv6110x_state), GFP_KERNEL);
83b6601c DC	369	if (!stv6110x)
83b6601c DC	370	return NULL;
e415c689 MA	371
	372	stv6110x->i2c = i2c;
	373	stv6110x->config = config;
	374	stv6110x->devctl = &stv6110x_ctl;
ec2d3a62	375	memcpy(stv6110x->regs, default_regs, 8);
e415c689	376
ca108b39 AR	377	/* setup divider */
	378	switch (stv6110x->config->clk_div) {
	379	default:
	380	case 1:
	381	STV6110x_SETFIELD(stv6110x->regs[STV6110x_CTRL2], CTRL2_CO_DIV, 0);
	382	break;
	383	case 2:
	384	STV6110x_SETFIELD(stv6110x->regs[STV6110x_CTRL2], CTRL2_CO_DIV, 1);
	385	break;
	386	case 4:
	387	STV6110x_SETFIELD(stv6110x->regs[STV6110x_CTRL2], CTRL2_CO_DIV, 2);
	388	break;
	389	case 8:
	390	case 0:
	391	STV6110x_SETFIELD(stv6110x->regs[STV6110x_CTRL2], CTRL2_CO_DIV, 3);
	392	break;
	393	}
	394
e415c689 MA	395	fe->tuner_priv = stv6110x;
	396	fe->ops.tuner_ops = stv6110x_ops;
	397
83b6601c	398	printk(KERN_INFO "%s: Attaching STV6110x\n", __func__);
e415c689	399	return stv6110x->devctl;
e415c689 MA	400	}
	401	EXPORT_SYMBOL(stv6110x_attach);
	402
	403	MODULE_AUTHOR("Manu Abraham");
	404	MODULE_DESCRIPTION("STV6110x Silicon tuner");
	405	MODULE_LICENSE("GPL");