| /* 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 |
