[mirror_ubuntu-artful-kernel.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/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 u8 stv6110x_regs[] = {0x07, 0x11, 0xdc, 0x85, 0x17, 0x01, 0xe6, 0x1e};

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;
	}

	return 0;
}

static int stv6110x_write_reg(struct stv6110x_state *stv6110x, u8 reg, u8 data)
{
	int ret;
	const struct stv6110x_config *config = stv6110x->config;
	u8 buf[] = { reg, data };
	struct i2c_msg msg = { .addr = config->addr, .flags = 0, . buf = buf, .len = 2 };

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

	return 0;
}

static int stv6110x_init(struct dvb_frontend *fe)
{
	struct stv6110x_state *stv6110x = fe->tuner_priv;
	int ret;
	u8 i;

	for (i = 0; i < ARRAY_SIZE(stv6110x_regs); i++) {
		ret = stv6110x_write_reg(stv6110x, i, stv6110x_regs[i]);
		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;
	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)(1000 - pVal))))
			rDivOpt = rDiv;
	}

	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)
{
	return stv6110x_set_mode(fe, TUNER_SLEEP);
}

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,
	},

	.init			= stv6110x_init,
	.sleep          	= stv6110x_sleep,
	.release		= stv6110x_release
};

static struct stv6110x_devctl stv6110x_ctl = {
	.tuner_init		= stv6110x_init,
	.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;

	stv6110x = kzalloc(sizeof (struct stv6110x_state), GFP_KERNEL);
	if (stv6110x == NULL)
		goto error;

	stv6110x->i2c		= i2c;
	stv6110x->config	= config;
	stv6110x->devctl	= &stv6110x_ctl;

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

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

error:
	kfree(stv6110x);
	return NULL;
}
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>
	26	#include <linux/string.h>
	27
	28	#include "dvb_frontend.h"
	29
	30	#include "stv6110x_reg.h"
	31	#include "stv6110x.h"
	32	#include "stv6110x_priv.h"
	33
	34	static unsigned int verbose;
	35	module_param(verbose, int, 0644);
	36	MODULE_PARM_DESC(verbose, "Set Verbosity level");
	37
	38	static u8 stv6110x_regs[] = {0x07, 0x11, 0xdc, 0x85, 0x17, 0x01, 0xe6, 0x1e};
	39
	40	static int stv6110x_read_reg(struct stv6110x_state stv6110x, u8 reg, u8 data)
	41	{
	42	int ret;
	43	const struct stv6110x_config *config = stv6110x->config;
	44	u8 b0[] = { reg };
	45	u8 b1[] = { 0 };
	46	struct i2c_msg msg[] = {
	47	{ .addr = config->addr, .flags = 0, .buf = b0, .len = 1 },
	48	{ .addr = config->addr, .flags = I2C_M_RD, .buf = b1, .len = 1 }
	49	};
	50
	51	ret = i2c_transfer(stv6110x->i2c, msg, 2);
	52	if (ret != 2) {
	53	dprintk(FE_ERROR, 1, "I/O Error");
	54	return -EREMOTEIO;
	55	}
	56
	57	return 0;
	58	}
	59
	60	static int stv6110x_write_reg(struct stv6110x_state *stv6110x, u8 reg, u8 data)
	61	{
	62	int ret;
	63	const struct stv6110x_config *config = stv6110x->config;
	64	u8 buf[] = { reg, data };
65	struct i2c_msg msg = { .addr = config->addr, .flags = 0, . buf = buf, .len = 2 };
66
67	ret = i2c_transfer(stv6110x->i2c, &msg, 1);
68	if (ret != 1) {
69	dprintk(FE_ERROR, 1, "I/O Error");
70	return -EREMOTEIO;
71	}
72
73	return 0;
74	}
75
76	static int stv6110x_init(struct dvb_frontend *fe)
77	{
78	struct stv6110x_state *stv6110x = fe->tuner_priv;
79	int ret;
80	u8 i;
81
82	for (i = 0; i < ARRAY_SIZE(stv6110x_regs); i++) {
83	ret = stv6110x_write_reg(stv6110x, i, stv6110x_regs[i]);
84	if (ret < 0) {
85	dprintk(FE_ERROR, 1, "Initialization failed");
86	return -1;
87	}
88	}
89
90	return 0;
91	}
92
93	static int stv6110x_set_frequency(struct dvb_frontend *fe, u32 frequency)
94	{
95	struct stv6110x_state *stv6110x = fe->tuner_priv;
96	u32 rDiv, divider;
97	s32 pVal, pCalc, rDivOpt = 0;
98	u8 i;
99
100	STV6110x_SETFIELD(stv6110x_regs[STV6110x_CTRL1], CTRL1_K, (REFCLOCK_MHz - 16));
101
102	if (frequency <= 1023000) {
103	STV6110x_SETFIELD(stv6110x_regs[STV6110x_TNG1], TNG1_DIV4SEL, 1);
104	STV6110x_SETFIELD(stv6110x_regs[STV6110x_TNG1], TNG1_PRESC32_ON, 0);
105	pVal = 40;
106	} else if (frequency <= 1300000) {
107	STV6110x_SETFIELD(stv6110x_regs[STV6110x_TNG1], TNG1_DIV4SEL, 1);
108	STV6110x_SETFIELD(stv6110x_regs[STV6110x_TNG1], TNG1_PRESC32_ON, 1);
109	pVal = 40;
110	} else if (frequency <= 2046000) {
111	STV6110x_SETFIELD(stv6110x_regs[STV6110x_TNG1], TNG1_DIV4SEL, 0);
112	STV6110x_SETFIELD(stv6110x_regs[STV6110x_TNG1], TNG1_PRESC32_ON, 0);
113	pVal = 20;
114	} else {
115	STV6110x_SETFIELD(stv6110x_regs[STV6110x_TNG1], TNG1_DIV4SEL, 0);
116	STV6110x_SETFIELD(stv6110x_regs[STV6110x_TNG1], TNG1_PRESC32_ON, 1);
117	pVal = 20;
118	}
119
120	for (rDiv = 0; rDiv <= 3; rDiv++) {
121	pCalc = (REFCLOCK_kHz / 100) / R_DIV(rDiv);
122
123	if ((abs((s32)(pCalc - pVal))) < (abs((s32)(1000 - pVal))))
124	rDivOpt = rDiv;
125	}
126
127	divider = (frequency * R_DIV(rDivOpt) * pVal) / REFCLOCK_kHz;
128	divider = (divider + 5) / 10;
129
130	STV6110x_SETFIELD(stv6110x_regs[STV6110x_TNG1], TNG1_R_DIV, rDivOpt);
131	STV6110x_SETFIELD(stv6110x_regs[STV6110x_TNG1], TNG1_N_DIV_11_8, MSB(divider));
132	STV6110x_SETFIELD(stv6110x_regs[STV6110x_TNG0], TNG0_N_DIV_7_0, LSB(divider));
133
134	/* VCO Auto calibration */
135	STV6110x_SETFIELD(stv6110x_regs[STV6110x_STAT1], STAT1_CALVCO_STRT, 1);
136
137	stv6110x_write_reg(stv6110x, STV6110x_CTRL1, stv6110x_regs[STV6110x_CTRL1]);
138	stv6110x_write_reg(stv6110x, STV6110x_TNG1, stv6110x_regs[STV6110x_TNG1]);
139	stv6110x_write_reg(stv6110x, STV6110x_TNG0, stv6110x_regs[STV6110x_TNG0]);
140	stv6110x_write_reg(stv6110x, STV6110x_STAT1, stv6110x_regs[STV6110x_STAT1]);
141
142	for (i = 0; i < TRIALS; i++) {
143	stv6110x_read_reg(stv6110x, STV6110x_STAT1, &stv6110x_regs[STV6110x_STAT1]);
144	if (!STV6110x_GETFIELD(STAT1_CALVCO_STRT, stv6110x_regs[STV6110x_STAT1]))
145	break;
146	msleep(1);
147	}
148
149	return 0;
150	}
151
152	static int stv6110x_get_frequency(struct dvb_frontend fe, u32 frequency)
153	{
154	struct stv6110x_state *stv6110x = fe->tuner_priv;
155
156	stv6110x_read_reg(stv6110x, STV6110x_TNG1, &stv6110x_regs[STV6110x_TNG1]);
157	stv6110x_read_reg(stv6110x, STV6110x_TNG0, &stv6110x_regs[STV6110x_TNG0]);
158
159	*frequency = (MAKEWORD16(STV6110x_GETFIELD(TNG1_N_DIV_11_8, stv6110x_regs[STV6110x_TNG1]),
160	STV6110x_GETFIELD(TNG0_N_DIV_7_0, stv6110x_regs[STV6110x_TNG0]))) * REFCLOCK_kHz;
161
162	*frequency /= (1 << (STV6110x_GETFIELD(TNG1_R_DIV, stv6110x_regs[STV6110x_TNG1]) +
163	STV6110x_GETFIELD(TNG1_DIV4SEL, stv6110x_regs[STV6110x_TNG1])));
164
165	*frequency >>= 2;
166
167	return 0;
168	}
169
170	static int stv6110x_set_bandwidth(struct dvb_frontend *fe, u32 bandwidth)
171	{
172	struct stv6110x_state *stv6110x = fe->tuner_priv;
173	u32 halfbw;
174	u8 i;
175
176	halfbw = bandwidth >> 1;
177
178	if (halfbw > 36000000)
179	STV6110x_SETFIELD(stv6110x_regs[STV6110x_CTRL3], CTRL3_CF, 31); /* LPF */
180	else if (halfbw < 5000000)
181	STV6110x_SETFIELD(stv6110x_regs[STV6110x_CTRL3], CTRL3_CF, 0); /* LPF */
182	else
183	STV6110x_SETFIELD(stv6110x_regs[STV6110x_CTRL3], CTRL3_CF, ((halfbw / 1000000) - 5)); /* LPF */
184
185
186	STV6110x_SETFIELD(stv6110x_regs[STV6110x_CTRL3], CTRL3_RCCLK_OFF, 0x0); /* cal. clk activated */
187	STV6110x_SETFIELD(stv6110x_regs[STV6110x_STAT1], STAT1_CALRC_STRT, 0x1); /* LPF auto cal */
188
189	stv6110x_write_reg(stv6110x, STV6110x_CTRL3, stv6110x_regs[STV6110x_CTRL3]);
190	stv6110x_write_reg(stv6110x, STV6110x_STAT1, stv6110x_regs[STV6110x_STAT1]);
191
192	for (i = 0; i < TRIALS; i++) {
193	stv6110x_read_reg(stv6110x, STV6110x_STAT1, &stv6110x_regs[STV6110x_STAT1]);
194	if (!STV6110x_GETFIELD(STAT1_CALRC_STRT, stv6110x_regs[STV6110x_STAT1]))
195	break;
196	msleep(1);
197	}
198	STV6110x_SETFIELD(stv6110x_regs[STV6110x_CTRL3], CTRL3_RCCLK_OFF, 0x1); /* cal. done */
199	stv6110x_write_reg(stv6110x, STV6110x_CTRL3, stv6110x_regs[STV6110x_CTRL3]);
200
201	return 0;
202	}
203
204	static int stv6110x_get_bandwidth(struct dvb_frontend fe, u32 bandwidth)
205	{
206	struct stv6110x_state *stv6110x = fe->tuner_priv;
207
208	stv6110x_read_reg(stv6110x, STV6110x_CTRL3, &stv6110x_regs[STV6110x_CTRL3]);
209	bandwidth = (STV6110x_GETFIELD(CTRL3_CF, stv6110x_regs[STV6110x_CTRL3]) + 5) 2000000;
210
211	return 0;
212	}
213
214	static int stv6110x_set_refclock(struct dvb_frontend *fe, u32 refclock)
215	{
216	struct stv6110x_state *stv6110x = fe->tuner_priv;
217
218	/* setup divider */
219	switch (refclock) {
220	default:
221	case 1:
222	STV6110x_SETFIELD(stv6110x_regs[STV6110x_CTRL2], CTRL2_CO_DIV, 0);
223	break;
224	case 2:
225	STV6110x_SETFIELD(stv6110x_regs[STV6110x_CTRL2], CTRL2_CO_DIV, 1);
226	break;
227	case 4:
228	STV6110x_SETFIELD(stv6110x_regs[STV6110x_CTRL2], CTRL2_CO_DIV, 2);
229	break;
230	case 8:
231	case 0:
232	STV6110x_SETFIELD(stv6110x_regs[STV6110x_CTRL2], CTRL2_CO_DIV, 3);
233	break;
234	}
235	stv6110x_write_reg(stv6110x, STV6110x_CTRL2, stv6110x_regs[STV6110x_CTRL2]);
236
237	return 0;
238	}
239
240	static int stv6110x_get_bbgain(struct dvb_frontend fe, u32 gain)
241	{
242	struct stv6110x_state *stv6110x = fe->tuner_priv;
243
244	stv6110x_read_reg(stv6110x, STV6110x_CTRL2, &stv6110x_regs[STV6110x_CTRL2]);
245	gain = 2 STV6110x_GETFIELD(CTRL2_BBGAIN, stv6110x_regs[STV6110x_CTRL2]);
246
247	return 0;
248	}
249
250	static int stv6110x_set_bbgain(struct dvb_frontend *fe, u32 gain)
251	{
252	struct stv6110x_state *stv6110x = fe->tuner_priv;
253
254	STV6110x_SETFIELD(stv6110x_regs[STV6110x_CTRL2], CTRL2_BBGAIN, gain / 2);
255	stv6110x_write_reg(stv6110x, STV6110x_CTRL2, stv6110x_regs[STV6110x_CTRL2]);
256
257	return 0;
258	}
259
260	static int stv6110x_set_mode(struct dvb_frontend *fe, enum tuner_mode mode)
261	{
262	struct stv6110x_state *stv6110x = fe->tuner_priv;
263	int ret;
264
265	switch (mode) {
266	case TUNER_SLEEP:
267	STV6110x_SETFIELD(stv6110x_regs[STV6110x_CTRL1], CTRL1_SYN, 0);
268	STV6110x_SETFIELD(stv6110x_regs[STV6110x_CTRL1], CTRL1_RX, 0);
269	STV6110x_SETFIELD(stv6110x_regs[STV6110x_CTRL1], CTRL1_LPT, 0);
270	break;
271
272	case TUNER_WAKE:
273	STV6110x_SETFIELD(stv6110x_regs[STV6110x_CTRL1], CTRL1_SYN, 1);
274	STV6110x_SETFIELD(stv6110x_regs[STV6110x_CTRL1], CTRL1_RX, 1);
275	STV6110x_SETFIELD(stv6110x_regs[STV6110x_CTRL1], CTRL1_LPT, 1);
276	break;
277	}
278
279	ret = stv6110x_write_reg(stv6110x, STV6110x_CTRL1, stv6110x_regs[STV6110x_CTRL1]);
280	if (ret < 0) {
281	dprintk(FE_ERROR, 1, "I/O Error");
282	return -EIO;
283	}
284
285	return 0;
286	}
287
288	static int stv6110x_sleep(struct dvb_frontend *fe)
289	{
290	return stv6110x_set_mode(fe, TUNER_SLEEP);
291	}
292
293	static int stv6110x_get_status(struct dvb_frontend fe, u32 status)
294	{
295	struct stv6110x_state *stv6110x = fe->tuner_priv;
296
297	stv6110x_read_reg(stv6110x, STV6110x_STAT1, &stv6110x_regs[STV6110x_STAT1]);
298
299	if (STV6110x_GETFIELD(STAT1_LOCK, stv6110x_regs[STV6110x_STAT1]))
300	*status = TUNER_PHASELOCKED;
301	else
302	*status = 0;
303
304	return 0;
305	}
306
307
308	static int stv6110x_release(struct dvb_frontend *fe)
309	{
310	struct stv6110x_state *stv6110x = fe->tuner_priv;
311
312	fe->tuner_priv = NULL;
313	kfree(stv6110x);
314
315	return 0;
316	}
317
318	static struct dvb_tuner_ops stv6110x_ops = {
319	.info = {
320	.name = "STV6110(A) Silicon Tuner",
321	.frequency_min = 950000,
322	.frequency_max = 2150000,
323	.frequency_step = 0,
324	},
325
326	.init = stv6110x_init,
327	.sleep = stv6110x_sleep,
328	.release = stv6110x_release
329	};
330
331	static struct stv6110x_devctl stv6110x_ctl = {
332	.tuner_init = stv6110x_init,
333	.tuner_set_mode = stv6110x_set_mode,
334	.tuner_set_frequency = stv6110x_set_frequency,
335	.tuner_get_frequency = stv6110x_get_frequency,
336	.tuner_set_bandwidth = stv6110x_set_bandwidth,
337	.tuner_get_bandwidth = stv6110x_get_bandwidth,
338	.tuner_set_bbgain = stv6110x_set_bbgain,
339	.tuner_get_bbgain = stv6110x_get_bbgain,
340	.tuner_set_refclk = stv6110x_set_refclock,
341	.tuner_get_status = stv6110x_get_status,
342	};
343
344	struct stv6110x_devctl stv6110x_attach(struct dvb_frontend fe,
345	const struct stv6110x_config *config,
346	struct i2c_adapter *i2c)
347	{
348	struct stv6110x_state *stv6110x;
349
350	stv6110x = kzalloc(sizeof (struct stv6110x_state), GFP_KERNEL);
351	if (stv6110x == NULL)
352	goto error;
353
354	stv6110x->i2c = i2c;
355	stv6110x->config = config;
356	stv6110x->devctl = &stv6110x_ctl;
357
358	fe->tuner_priv = stv6110x;
359	fe->ops.tuner_ops = stv6110x_ops;
360
361	printk("%s: Attaching STV6110x \n", __func__);
362	return stv6110x->devctl;
363
364	error:
365	kfree(stv6110x);
366	return NULL;
367	}
368	EXPORT_SYMBOL(stv6110x_attach);
369
370	MODULE_AUTHOR("Manu Abraham");
371	MODULE_DESCRIPTION("STV6110x Silicon tuner");
372	MODULE_LICENSE("GPL");