xref: /openbmc/linux/drivers/media/dvb-frontends/lnbp22.h (revision a0c7056f)

/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
 * lnbp22.h - driver for lnb supply and control ic lnbp22
 *
 * Copyright (C) 2006 Dominik Kuhlen
 * Based on lnbp21.h
 *
 * the project's page is at https://linuxtv.org
 */

#ifndef _LNBP22_H
#define _LNBP22_H

/* Enable */
#define LNBP22_EN	  0x10
/* Voltage selection */
#define LNBP22_VSEL	0x02
/* Plus 1 Volt Bit */
#define LNBP22_LLC	0x01

#include <linux/dvb/frontend.h>

#if IS_REACHABLE(CONFIG_DVB_LNBP22)
/*
 * override_set and override_clear control which system register bits (above)
 * to always set & clear
 */
extern struct dvb_frontend *lnbp22_attach(struct dvb_frontend *fe,
						struct i2c_adapter *i2c);
#else
static inline struct dvb_frontend *lnbp22_attach(struct dvb_frontend *fe,
						struct i2c_adapter *i2c)
{
	printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
	return NULL;
}
#endif /* CONFIG_DVB_LNBP22 */

#endif /* _LNBP22_H */