Release 4.7 drivers/media/dvb-frontends/stv6110x.c

Directory: drivers/media/dvb-frontends
/*
        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"

/* Max transfer size done by I2C transfer functions */

#define MAX_XFER_SIZE  64


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;
}

Contributors
Person Tokens Prop Commits CommitProp
manu abraham manu abraham 139 94.56% 1 50.00%
andreas regel andreas regel 8 5.44% 1 50.00%
Total 147 100.00% 2 100.00%



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[MAX_XFER_SIZE];

	struct i2c_msg msg = {
		.addr = config->addr,
		.flags = 0,
		.buf = buf,
		.len = len + 1
	};

	if (1 + len > sizeof(buf)) {
		printk(KERN_WARNING
		       "%s: i2c wr: len=%d is too big!\n",
		       KBUILD_MODNAME, len);
		return -EINVAL;
	}

	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;
}

Contributors
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manu abraham manu abraham 95 56.89% 1 33.33%
andreas regel andreas regel 44 26.35% 1 33.33%
mauro carvalho chehab mauro carvalho chehab 28 16.77% 1 33.33%
Total 167 100.00% 3 100.00%



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

Contributors
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andreas regel andreas regel 30 100.00% 1 100.00%
Total 30 100.00% 1 100.00%



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;
}

Contributors
Person Tokens Prop Commits CommitProp
manu abraham manu abraham 55 82.09% 1 33.33%
andreas regel andreas regel 12 17.91% 2 66.67%
Total 67 100.00% 3 100.00%



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;
}

Contributors
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manu abraham manu abraham 417 84.76% 1 33.33%
andreas regel andreas regel 75 15.24% 2 66.67%
Total 492 100.00% 3 100.00%



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;
}

Contributors
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manu abraham manu abraham 111 86.05% 1 50.00%
andreas regel andreas regel 18 13.95% 1 50.00%
Total 129 100.00% 2 100.00%



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;
}

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manu abraham manu abraham 210 86.42% 1 50.00%
andreas regel andreas regel 33 13.58% 1 50.00%
Total 243 100.00% 2 100.00%



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;
}

Contributors
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manu abraham manu abraham 57 90.48% 1 50.00%
andreas regel andreas regel 6 9.52% 1 50.00%
Total 63 100.00% 2 100.00%



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;
}

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manu abraham manu abraham 108 87.80% 1 50.00%
andreas regel andreas regel 15 12.20% 1 50.00%
Total 123 100.00% 2 100.00%



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;
}

Contributors
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manu abraham manu abraham 53 89.83% 1 50.00%
andreas regel andreas regel 6 10.17% 1 50.00%
Total 59 100.00% 2 100.00%



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;
}

Contributors
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manu abraham manu abraham 50 89.29% 1 50.00%
andreas regel andreas regel 6 10.71% 1 50.00%
Total 56 100.00% 2 100.00%



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;
}

Contributors
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manu abraham manu abraham 144 87.27% 1 50.00%
andreas regel andreas regel 21 12.73% 1 50.00%
Total 165 100.00% 2 100.00%



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

	return 0;
}

Contributors
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manu abraham manu abraham 19 67.86% 1 50.00%
guy martin guy martin 9 32.14% 1 50.00%
Total 28 100.00% 2 100.00%



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;
}


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manu abraham manu abraham 61 91.04% 1 50.00%
andreas regel andreas regel 6 8.96% 1 50.00%
Total 67 100.00% 2 100.00%



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

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

	return 0;
}

Contributors
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manu abraham manu abraham 34 100.00% 1 100.00%
Total 34 100.00% 1 100.00%


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 const 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,
};



const 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;
}
Contributors
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andreas regel andreas regel 120 55.56% 2 40.00%
manu abraham manu abraham 89 41.20% 1 20.00%
dan carpenter dan carpenter 6 2.78% 1 20.00%
julia lawall julia lawall 1 0.46% 1 20.00%
Total 216 100.00% 5 100.00%


EXPORT_SYMBOL(stv6110x_attach);

MODULE_AUTHOR("Manu Abraham");
MODULE_DESCRIPTION("STV6110x Silicon tuner");
MODULE_LICENSE("GPL");
Overall Contributors
Person Tokens Prop Commits CommitProp
manu abraham manu abraham 1807 79.96% 2 16.67%
andreas regel andreas regel 400 17.70% 5 41.67%
mauro carvalho chehab mauro carvalho chehab 33 1.46% 1 8.33%
guy martin guy martin 9 0.40% 1 8.33%
dan carpenter dan carpenter 6 0.27% 1 8.33%
tejun heo tejun heo 3 0.13% 1 8.33%
julia lawall julia lawall 2 0.09% 1 8.33%
Total 2260 100.00% 12 100.00%
  Directory: drivers/media/dvb-frontends

Information contained on this website is for historical information purposes only and does not indicate or represent copyright ownership.
	Person	Tokens	Prop	Commits	CommitProp
manu abraham	manu abraham	139	94.56%	1	50.00%
andreas regel	andreas regel	8	5.44%	1	50.00%
	Total	147	100.00%	2	100.00%
cregit-Linux how code gets into the kernel

Release 4.7 drivers/media/dvb-frontends/stv6110x.c

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