| 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 */ |
| 27 | extern 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 |
| 30 | static 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 |