/* SPDX-License-Identifier: GPL-2.0-or-later */ /* * isl6421.h - driver for lnb supply and control ic ISL6421 * * Copyright (C) 2006 Andrew de Quincey * Copyright (C) 2006 Oliver Endriss * * the project's page is at https://linuxtv.org */ #ifndef _ISL6421_H #define _ISL6421_H #include <linux/dvb/frontend.h> /* system register bits */ #define ISL6421_OLF1 0x01 #define ISL6421_EN1 0x02 #define ISL6421_VSEL1 0x04 #define ISL6421_LLC1 0x08 #define ISL6421_ENT1 0x10 #define ISL6421_ISEL1 0x20 #define ISL6421_DCL 0x40 #if IS_REACHABLE(CONFIG_DVB_ISL6421) /* override_set and override_clear control which system register bits (above) to always set & clear */ extern struct dvb_frontend *isl6421_attach(struct dvb_frontend *fe, struct i2c_adapter *i2c, u8 i2c_addr, u8 override_set, u8 override_clear, bool override_tone); #else static inline struct dvb_frontend *isl6421_attach(struct dvb_frontend *fe, struct i2c_adapter *i2c, u8 i2c_addr, u8 override_set, u8 override_clear, bool override_tone) { printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__); return NULL; } #endif // CONFIG_DVB_ISL6421 #endif