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