| 1 | /* SPDX-License-Identifier: GPL-2.0-or-later */ |
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| 2 | /* |
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| 3 | * isl6421.h - driver for lnb supply and control ic ISL6421 |
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| 4 | * |
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| 5 | * Copyright (C) 2006 Andrew de Quincey |
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| 6 | * Copyright (C) 2006 Oliver Endriss |
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| 7 | * |
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| 8 | * the project's page is at https://linuxtv.org |
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| 9 | */ |
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| 10 | |
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| 11 | #ifndef _ISL6421_H |
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| 12 | #define _ISL6421_H |
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| 13 | |
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| 14 | #include <linux/dvb/frontend.h> |
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| 15 | |
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| 16 | /* system register bits */ |
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| 17 | #define ISL6421_OLF1 0x01 |
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| 18 | #define ISL6421_EN1 0x02 |
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| 19 | #define ISL6421_VSEL1 0x04 |
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| 20 | #define ISL6421_LLC1 0x08 |
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| 21 | #define ISL6421_ENT1 0x10 |
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| 22 | #define ISL6421_ISEL1 0x20 |
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| 23 | #define ISL6421_DCL 0x40 |
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| 24 | |
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| 25 | #if IS_REACHABLE(CONFIG_DVB_ISL6421) |
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| 26 | /* override_set and override_clear control which system register bits (above) to always set & clear */ |
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| 27 | extern struct dvb_frontend *isl6421_attach(struct dvb_frontend *fe, struct i2c_adapter *i2c, u8 i2c_addr, |
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| 28 | u8 override_set, u8 override_clear, bool override_tone); |
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| 29 | #else |
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| 30 | static inline struct dvb_frontend *isl6421_attach(struct dvb_frontend *fe, struct i2c_adapter *i2c, u8 i2c_addr, |
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| 31 | u8 override_set, u8 override_clear, bool override_tone) |
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| 32 | { |
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| 33 | printk(KERN_WARNING "%s: driver disabled by Kconfig\n" , __func__); |
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| 34 | return NULL; |
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| 35 | } |
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| 36 | #endif // CONFIG_DVB_ISL6421 |
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| 37 | |
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| 38 | #endif |
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| 39 | |
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