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- /* 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
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