isl6421.h (1143B)
1/* SPDX-License-Identifier: GPL-2.0-or-later */ 2/* 3 * isl6421.h - driver for lnb supply and control ic ISL6421 4 * 5 * Copyright (C) 2006 Andrew de Quincey 6 * Copyright (C) 2006 Oliver Endriss 7 * 8 * the project's page is at https://linuxtv.org 9 */ 10 11#ifndef _ISL6421_H 12#define _ISL6421_H 13 14#include <linux/dvb/frontend.h> 15 16/* system register bits */ 17#define ISL6421_OLF1 0x01 18#define ISL6421_EN1 0x02 19#define ISL6421_VSEL1 0x04 20#define ISL6421_LLC1 0x08 21#define ISL6421_ENT1 0x10 22#define ISL6421_ISEL1 0x20 23#define ISL6421_DCL 0x40 24 25#if IS_REACHABLE(CONFIG_DVB_ISL6421) 26/* override_set and override_clear control which system register bits (above) to always set & clear */ 27extern struct dvb_frontend *isl6421_attach(struct dvb_frontend *fe, struct i2c_adapter *i2c, u8 i2c_addr, 28 u8 override_set, u8 override_clear, bool override_tone); 29#else 30static inline struct dvb_frontend *isl6421_attach(struct dvb_frontend *fe, struct i2c_adapter *i2c, u8 i2c_addr, 31 u8 override_set, u8 override_clear, bool override_tone) 32{ 33 printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__); 34 return NULL; 35} 36#endif // CONFIG_DVB_ISL6421 37 38#endif