[mirror_ubuntu-artful-kernel.git] / 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;
}

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;
}

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;
}

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;
}

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;
}

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);
}
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);
}
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");
Commit	Line	Data
d020542f	1	/*
8c1a2331	2	* lnbp21.c - driver for lnb supply and control ic lnbp21
d020542f	3	*
9efc1bdd	4	* Copyright (C) 2006, 2009 Oliver Endriss <o.endriss@gmx.de>
8c1a2331	5	* Copyright (C) 2009 Igor M. Liplianin <liplianin@netup.ru>
d020542f AQ	6	*
	7	* This program is free software; you can redistribute it and/or
	8	* modify it under the terms of the GNU General Public License
	9	* as published by the Free Software Foundation; either version 2
	10	* of the License, or (at your option) any later version.
	11	*
	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	*
bcb63314 SA	18	* To obtain the license, point your browser to
bcb63314 SA	19	* http://www.gnu.org/copyleft/gpl.html
d020542f AQ	20	*
d020542f AQ	21	*
991ce92f	22	* the project's page is at https://linuxtv.org
d020542f AQ	23	*/
	24	#include <linux/delay.h>
	25	#include <linux/errno.h>
	26	#include <linux/init.h>
	27	#include <linux/kernel.h>
	28	#include <linux/module.h>
d020542f AQ	29	#include <linux/string.h>
	30	#include <linux/slab.h>
	31
	32	#include "dvb_frontend.h"
	33	#include "lnbp21.h"
8c1a2331	34	#include "lnbh24.h"
d020542f AQ	35
	36	struct lnbp21 {
	37	u8 config;
	38	u8 override_or;
	39	u8 override_and;
	40	struct i2c_adapter *i2c;
8c1a2331	41	u8 i2c_addr;
d020542f AQ	42	};
d020542f AQ	43
8c1a2331	44	static int lnbp21_set_voltage(struct dvb_frontend *fe,
0df289a2	45	enum fe_sec_voltage voltage)
d020542f	46	{
13fef933	47	struct lnbp21 lnbp21 = (struct lnbp21 ) fe->sec_priv;
8c1a2331	48	struct i2c_msg msg = { .addr = lnbp21->i2c_addr, .flags = 0,
d020542f AQ	49	.buf = &lnbp21->config,
	50	.len = sizeof(lnbp21->config) };
	51
	52	lnbp21->config &= ~(LNBP21_VSEL \| LNBP21_EN);
	53
	54	switch(voltage) {
	55	case SEC_VOLTAGE_OFF:
	56	break;
	57	case SEC_VOLTAGE_13:
	58	lnbp21->config \|= LNBP21_EN;
	59	break;
	60	case SEC_VOLTAGE_18:
	61	lnbp21->config \|= (LNBP21_EN \| LNBP21_VSEL);
	62	break;
	63	default:
	64	return -EINVAL;
c2c1b415	65	}
d020542f AQ	66
	67	lnbp21->config \|= lnbp21->override_or;
	68	lnbp21->config &= lnbp21->override_and;
	69
	70	return (i2c_transfer(lnbp21->i2c, &msg, 1) == 1) ? 0 : -EIO;
	71	}
	72
	73	static int lnbp21_enable_high_lnb_voltage(struct dvb_frontend *fe, long arg)
	74	{
13fef933	75	struct lnbp21 lnbp21 = (struct lnbp21 ) fe->sec_priv;
8c1a2331	76	struct i2c_msg msg = { .addr = lnbp21->i2c_addr, .flags = 0,
d020542f AQ	77	.buf = &lnbp21->config,
	78	.len = sizeof(lnbp21->config) };
	79
	80	if (arg)
	81	lnbp21->config \|= LNBP21_LLC;
	82	else
	83	lnbp21->config &= ~LNBP21_LLC;
	84
	85	lnbp21->config \|= lnbp21->override_or;
	86	lnbp21->config &= lnbp21->override_and;
	87
	88	return (i2c_transfer(lnbp21->i2c, &msg, 1) == 1) ? 0 : -EIO;
	89	}
	90
9efc1bdd	91	static int lnbp21_set_tone(struct dvb_frontend *fe,
0df289a2	92	enum fe_sec_tone_mode tone)
9efc1bdd OE	93	{
	94	struct lnbp21 lnbp21 = (struct lnbp21 ) fe->sec_priv;
	95	struct i2c_msg msg = { .addr = lnbp21->i2c_addr, .flags = 0,
	96	.buf = &lnbp21->config,
	97	.len = sizeof(lnbp21->config) };
	98
	99	switch (tone) {
	100	case SEC_TONE_OFF:
	101	lnbp21->config &= ~LNBP21_TEN;
	102	break;
	103	case SEC_TONE_ON:
	104	lnbp21->config \|= LNBP21_TEN;
	105	break;
	106	default:
	107	return -EINVAL;
c2c1b415	108	}
9efc1bdd OE	109
	110	lnbp21->config \|= lnbp21->override_or;
	111	lnbp21->config &= lnbp21->override_and;
	112
	113	return (i2c_transfer(lnbp21->i2c, &msg, 1) == 1) ? 0 : -EIO;
	114	}
	115
d020542f AQ	116	static void lnbp21_release(struct dvb_frontend *fe)
d020542f AQ	117	{
d020542f AQ	118	/* LNBP power off */
	119	lnbp21_set_voltage(fe, SEC_VOLTAGE_OFF);
	120
13fef933 AQ	121	/* free data */
	122	kfree(fe->sec_priv);
	123	fe->sec_priv = NULL;
d020542f AQ	124	}
d020542f AQ	125
8c1a2331 IL	126	static struct dvb_frontend lnbx2x_attach(struct dvb_frontend fe,
	127	struct i2c_adapter *i2c, u8 override_set,
	128	u8 override_clear, u8 i2c_addr, u8 config)
d020542f AQ	129	{
	130	struct lnbp21 *lnbp21 = kmalloc(sizeof(struct lnbp21), GFP_KERNEL);
	131	if (!lnbp21)
13fef933	132	return NULL;
d020542f AQ	133
d020542f AQ	134	/* default configuration */
8c1a2331	135	lnbp21->config = config;
d020542f	136	lnbp21->i2c = i2c;
8c1a2331	137	lnbp21->i2c_addr = i2c_addr;
13fef933	138	fe->sec_priv = lnbp21;
d020542f AQ	139
	140	/* bits which should be forced to '1' */
	141	lnbp21->override_or = override_set;
	142
	143	/* bits which should be forced to '0' */
	144	lnbp21->override_and = ~override_clear;
	145
	146	/* detect if it is present or not */
	147	if (lnbp21_set_voltage(fe, SEC_VOLTAGE_OFF)) {
	148	kfree(lnbp21);
13fef933	149	return NULL;
d020542f AQ	150	}
	151
	152	/* install release callback */
b5b168d7	153	fe->ops.release_sec = lnbp21_release;
d020542f AQ	154
d020542f AQ	155	/* override frontend ops */
dea74869 PB	156	fe->ops.set_voltage = lnbp21_set_voltage;
dea74869 PB	157	fe->ops.enable_high_lnb_voltage = lnbp21_enable_high_lnb_voltage;
0726681a	158	if (!(override_clear & LNBH24_TEN)) /22kHz logic controlled by demod/
ceb59cf0	159	fe->ops.set_tone = lnbp21_set_tone;
3cd5270c	160	printk(KERN_INFO "LNBx2x attached on addr=%x\n", lnbp21->i2c_addr);
d020542f	161
13fef933	162	return fe;
d020542f	163	}
8c1a2331	164
55d5834d	165	struct dvb_frontend lnbh24_attach(struct dvb_frontend fe,
8c1a2331 IL	166	struct i2c_adapter *i2c, u8 override_set,
	167	u8 override_clear, u8 i2c_addr)
	168	{
	169	return lnbx2x_attach(fe, i2c, override_set, override_clear,
	170	i2c_addr, LNBH24_TTX);
	171	}
	172	EXPORT_SYMBOL(lnbh24_attach);
	173
	174	struct dvb_frontend lnbp21_attach(struct dvb_frontend fe,
	175	struct i2c_adapter *i2c, u8 override_set,
	176	u8 override_clear)
	177	{
	178	return lnbx2x_attach(fe, i2c, override_set, override_clear,
	179	0x08, LNBP21_ISEL);
	180	}
d020542f AQ	181	EXPORT_SYMBOL(lnbp21_attach);
d020542f AQ	182
8c1a2331 IL	183	MODULE_DESCRIPTION("Driver for lnb supply and control ic lnbp21, lnbh24");
8c1a2331 IL	184	MODULE_AUTHOR("Oliver Endriss, Igor M. Liplianin");
d020542f	185	MODULE_LICENSE("GPL");