Release 4.11 drivers/media/dvb-frontends/lnbp21.c

/*
 * lnbp21.c - driver for lnb supply and control ic lnbp21
 *
 * Copyright (C) 2006, 2009 Oliver Endriss <o.endriss@gmx.de>
 * Copyright (C) 2009 Igor M. Liplianin <liplianin@netup.ru>
 *
 * 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.
 *
 * To obtain the license, point your browser to
 * http://www.gnu.org/copyleft/gpl.html
 *
 *
 * the project's page is at https://linuxtv.org
 */
#include <linux/delay.h>
#include <linux/errno.h>
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/string.h>
#include <linux/slab.h>

#include "dvb_frontend.h"
#include "lnbp21.h"
#include "lnbh24.h"


struct lnbp21 {
	
u8			config;
	
u8			override_or;
	
u8			override_and;
	
struct i2c_adapter	*i2c;
	
u8			i2c_addr;
};



static int lnbp21_set_voltage(struct dvb_frontend *fe,
			      enum fe_sec_voltage voltage)
{
	struct lnbp21 *lnbp21 = (struct lnbp21 *) fe->sec_priv;
	struct i2c_msg msg = {	.addr = lnbp21->i2c_addr, .flags = 0,
				.buf = &lnbp21->config,
				.len = sizeof(lnbp21->config) };

	lnbp21->config &= ~(LNBP21_VSEL | LNBP21_EN);

	switch(voltage) {
	case SEC_VOLTAGE_OFF:
		break;
	case SEC_VOLTAGE_13:
		lnbp21->config |= LNBP21_EN;
		break;
	case SEC_VOLTAGE_18:
		lnbp21->config |= (LNBP21_EN | LNBP21_VSEL);
		break;
	default:
		return -EINVAL;
	}

	lnbp21->config |= lnbp21->override_or;
	lnbp21->config &= lnbp21->override_and;

	return (i2c_transfer(lnbp21->i2c, &msg, 1) == 1) ? 0 : -EIO;
}

Contributors
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CommitProp
Andrew de Quincey
148
96.73%
2
50.00%
Igor M. Liplianin
3
1.96%
1
25.00%
Mauro Carvalho Chehab
2
1.31%
1
25.00%
Total
153
100.00%
4
100.00%



static int lnbp21_enable_high_lnb_voltage(struct dvb_frontend *fe, long arg)
{
	struct lnbp21 *lnbp21 = (struct lnbp21 *) fe->sec_priv;
	struct i2c_msg msg = {	.addr = lnbp21->i2c_addr, .flags = 0,
				.buf = &lnbp21->config,
				.len = sizeof(lnbp21->config) };

	if (arg)
		lnbp21->config |= LNBP21_LLC;
	else
		lnbp21->config &= ~LNBP21_LLC;

	lnbp21->config |= lnbp21->override_or;
	lnbp21->config &= lnbp21->override_and;

	return (i2c_transfer(lnbp21->i2c, &msg, 1) == 1) ? 0 : -EIO;
}

Contributors
Person
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CommitProp
Andrew de Quincey
117
97.50%
2
66.67%
Igor M. Liplianin
3
2.50%
1
33.33%
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120
100.00%
3
100.00%



static int lnbp21_set_tone(struct dvb_frontend *fe,
			   enum fe_sec_tone_mode tone)
{
	struct lnbp21 *lnbp21 = (struct lnbp21 *) fe->sec_priv;
	struct i2c_msg msg = {	.addr = lnbp21->i2c_addr, .flags = 0,
				.buf = &lnbp21->config,
				.len = sizeof(lnbp21->config) };

	switch (tone) {
	case SEC_TONE_OFF:
		lnbp21->config &= ~LNBP21_TEN;
		break;
	case SEC_TONE_ON:
		lnbp21->config |= LNBP21_TEN;
		break;
	default:
		return -EINVAL;
	}

	lnbp21->config |= lnbp21->override_or;
	lnbp21->config &= lnbp21->override_and;

	return (i2c_transfer(lnbp21->i2c, &msg, 1) == 1) ? 0 : -EIO;
}

Contributors
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CommitProp
Oliver Endriss
133
98.52%
1
50.00%
Mauro Carvalho Chehab
2
1.48%
1
50.00%
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135
100.00%
2
100.00%



static void lnbp21_release(struct dvb_frontend *fe)
{
	/* LNBP power off */
	lnbp21_set_voltage(fe, SEC_VOLTAGE_OFF);

	/* free data */
	kfree(fe->sec_priv);
	fe->sec_priv = NULL;
}

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Andrew de Quincey
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static struct dvb_frontend *lnbx2x_attach(struct dvb_frontend *fe,
				struct i2c_adapter *i2c, u8 override_set,
				u8 override_clear, u8 i2c_addr, u8 config)
{
	struct lnbp21 *lnbp21 = kmalloc(sizeof(struct lnbp21), GFP_KERNEL);
	if (!lnbp21)
		return NULL;

	/* default configuration */
	lnbp21->config = config;
	lnbp21->i2c = i2c;
	lnbp21->i2c_addr = i2c_addr;
	fe->sec_priv = lnbp21;

	/* bits which should be forced to '1' */
	lnbp21->override_or = override_set;

	/* bits which should be forced to '0' */
	lnbp21->override_and = ~override_clear;

	/* detect if it is present or not */
	if (lnbp21_set_voltage(fe, SEC_VOLTAGE_OFF)) {
		kfree(lnbp21);
		return NULL;
	}

	/* install release callback */
	fe->ops.release_sec = lnbp21_release;

	/* override frontend ops */
	fe->ops.set_voltage = lnbp21_set_voltage;
	fe->ops.enable_high_lnb_voltage = lnbp21_enable_high_lnb_voltage;
	if (!(override_clear & LNBH24_TEN)) /*22kHz logic controlled by demod*/
		fe->ops.set_tone = lnbp21_set_tone;
	printk(KERN_INFO "LNBx2x attached on addr=%x\n", lnbp21->i2c_addr);

	return fe;
}

Contributors
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CommitProp
Andrew de Quincey
120
70.18%
2
22.22%
Igor M. Liplianin
28
16.37%
1
11.11%
Abylay Ospan
10
5.85%
2
22.22%
Oliver Endriss
9
5.26%
2
22.22%
Patrick Boettcher
3
1.75%
1
11.11%
Andy Walls
1
0.58%
1
11.11%
Total
171
100.00%
9
100.00%



struct dvb_frontend *lnbh24_attach(struct dvb_frontend *fe,
				struct i2c_adapter *i2c, u8 override_set,
				u8 override_clear, u8 i2c_addr)
{
	return lnbx2x_attach(fe, i2c, override_set, override_clear,
							i2c_addr, LNBH24_TTX);
}
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Igor M. Liplianin
42
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EXPORT_SYMBOL(lnbh24_attach);



struct dvb_frontend *lnbp21_attach(struct dvb_frontend *fe,
				struct i2c_adapter *i2c, u8 override_set,
				u8 override_clear)
{
	return lnbx2x_attach(fe, i2c, override_set, override_clear,
							0x08, LNBP21_ISEL);
}
Contributors
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CommitProp
Igor M. Liplianin
35
89.74%
1
33.33%
Andrew de Quincey
4
10.26%
2
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EXPORT_SYMBOL(lnbp21_attach);

MODULE_DESCRIPTION("Driver for lnb supply and control ic lnbp21, lnbh24");
MODULE_AUTHOR("Oliver Endriss, Igor M. Liplianin");
MODULE_LICENSE("GPL");
Overall Contributors
Person
Tokens
Prop
Commits
CommitProp
Andrew de Quincey
486
63.04%
2
16.67%
Oliver Endriss
142
18.42%
2
16.67%
Igor M. Liplianin
124
16.08%
2
16.67%
Abylay Ospan
10
1.30%
2
16.67%
Mauro Carvalho Chehab
4
0.52%
1
8.33%
Patrick Boettcher
3
0.39%
1
8.33%
Sakari Ailus
1
0.13%
1
8.33%
Andy Walls
1
0.13%
1
8.33%
Total
771
100.00%
12
100.00%
Directory: drivers/media/dvb-frontends

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