18c2ecf20Sopenharmony_ci/* SPDX-License-Identifier: GPL-2.0-or-later */ 28c2ecf20Sopenharmony_ci/* 38c2ecf20Sopenharmony_ci * isl6421.h - driver for lnb supply and control ic ISL6421 48c2ecf20Sopenharmony_ci * 58c2ecf20Sopenharmony_ci * Copyright (C) 2006 Andrew de Quincey 68c2ecf20Sopenharmony_ci * Copyright (C) 2006 Oliver Endriss 78c2ecf20Sopenharmony_ci * 88c2ecf20Sopenharmony_ci * the project's page is at https://linuxtv.org 98c2ecf20Sopenharmony_ci */ 108c2ecf20Sopenharmony_ci 118c2ecf20Sopenharmony_ci#ifndef _ISL6421_H 128c2ecf20Sopenharmony_ci#define _ISL6421_H 138c2ecf20Sopenharmony_ci 148c2ecf20Sopenharmony_ci#include <linux/dvb/frontend.h> 158c2ecf20Sopenharmony_ci 168c2ecf20Sopenharmony_ci/* system register bits */ 178c2ecf20Sopenharmony_ci#define ISL6421_OLF1 0x01 188c2ecf20Sopenharmony_ci#define ISL6421_EN1 0x02 198c2ecf20Sopenharmony_ci#define ISL6421_VSEL1 0x04 208c2ecf20Sopenharmony_ci#define ISL6421_LLC1 0x08 218c2ecf20Sopenharmony_ci#define ISL6421_ENT1 0x10 228c2ecf20Sopenharmony_ci#define ISL6421_ISEL1 0x20 238c2ecf20Sopenharmony_ci#define ISL6421_DCL 0x40 248c2ecf20Sopenharmony_ci 258c2ecf20Sopenharmony_ci#if IS_REACHABLE(CONFIG_DVB_ISL6421) 268c2ecf20Sopenharmony_ci/* override_set and override_clear control which system register bits (above) to always set & clear */ 278c2ecf20Sopenharmony_ciextern struct dvb_frontend *isl6421_attach(struct dvb_frontend *fe, struct i2c_adapter *i2c, u8 i2c_addr, 288c2ecf20Sopenharmony_ci u8 override_set, u8 override_clear, bool override_tone); 298c2ecf20Sopenharmony_ci#else 308c2ecf20Sopenharmony_cistatic inline struct dvb_frontend *isl6421_attach(struct dvb_frontend *fe, struct i2c_adapter *i2c, u8 i2c_addr, 318c2ecf20Sopenharmony_ci u8 override_set, u8 override_clear, bool override_tone) 328c2ecf20Sopenharmony_ci{ 338c2ecf20Sopenharmony_ci printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__); 348c2ecf20Sopenharmony_ci return NULL; 358c2ecf20Sopenharmony_ci} 368c2ecf20Sopenharmony_ci#endif // CONFIG_DVB_ISL6421 378c2ecf20Sopenharmony_ci 388c2ecf20Sopenharmony_ci#endif 39