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 * To obtain the license, point your browser to 19 * http://www.gnu.org/copyleft/gpl.html 20 * 21 * 22 * the project's page is at https://linuxtv.org 23 */ 24 25 #ifndef _ISL6421_H 26 #define _ISL6421_H 27 28 #include <linux/dvb/frontend.h> 29 30 /* system register bits */ 31 #define ISL6421_OLF1 0x01 32 #define ISL6421_EN1 0x02 33 #define ISL6421_VSEL1 0x04 34 #define ISL6421_LLC1 0x08 35 #define ISL6421_ENT1 0x10 36 #define ISL6421_ISEL1 0x20 37 #define ISL6421_DCL 0x40 38 39 #if IS_REACHABLE(CONFIG_DVB_ISL6421) 40 /* override_set and override_clear control which system register bits (above) to always set & clear */ 41 extern struct dvb_frontend *isl6421_attach(struct dvb_frontend *fe, struct i2c_adapter *i2c, u8 i2c_addr, 42 u8 override_set, u8 override_clear, bool override_tone); 43 #else 44 static inline 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 { 47 printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__); 48 return NULL; 49 } 50 #endif // CONFIG_DVB_ISL6421 51 52 #endif 53