1/* 2 * isl6421.h - driver for lnb supply and control ic ISL6421 3 * 4 * Copyright (C) 2006 Andrew de Quincey 5 * Copyright (C) 2006 Oliver Endriss 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 * 18 * 19 * You should have received a copy of the GNU General Public License 20 * along with this program; if not, write to the Free Software 21 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. 22 * Or, point your browser to http://www.gnu.org/copyleft/gpl.html 23 * 24 * 25 * the project's page is at http://www.linuxtv.org 26 */ 27 28#ifndef _ISL6421_H 29#define _ISL6421_H 30 31#include <linux/dvb/frontend.h> 32 33/* system register bits */ 34#define ISL6421_OLF1 0x01 35#define ISL6421_EN1 0x02 36#define ISL6421_VSEL1 0x04 37#define ISL6421_LLC1 0x08 38#define ISL6421_ENT1 0x10 39#define ISL6421_ISEL1 0x20 40#define ISL6421_DCL 0x40 41 42#if IS_ENABLED(CONFIG_DVB_ISL6421) 43/* override_set and override_clear control which system register bits (above) to always set & clear */ 44extern struct dvb_frontend *isl6421_attach(struct dvb_frontend *fe, struct i2c_adapter *i2c, u8 i2c_addr, 45 u8 override_set, u8 override_clear, bool override_tone); 46#else 47static inline struct dvb_frontend *isl6421_attach(struct dvb_frontend *fe, struct i2c_adapter *i2c, u8 i2c_addr, 48 u8 override_set, u8 override_clear, bool override_tone) 49{ 50 printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__); 51 return NULL; 52} 53#endif // CONFIG_DVB_ISL6421 54 55#endif 56