1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0-or-later */
2*4882a593Smuzhiyun /*
3*4882a593Smuzhiyun * isl6421.h - driver for lnb supply and control ic ISL6421
4*4882a593Smuzhiyun *
5*4882a593Smuzhiyun * Copyright (C) 2006 Andrew de Quincey
6*4882a593Smuzhiyun * Copyright (C) 2006 Oliver Endriss
7*4882a593Smuzhiyun *
8*4882a593Smuzhiyun * the project's page is at https://linuxtv.org
9*4882a593Smuzhiyun */
10*4882a593Smuzhiyun
11*4882a593Smuzhiyun #ifndef _ISL6421_H
12*4882a593Smuzhiyun #define _ISL6421_H
13*4882a593Smuzhiyun
14*4882a593Smuzhiyun #include <linux/dvb/frontend.h>
15*4882a593Smuzhiyun
16*4882a593Smuzhiyun /* system register bits */
17*4882a593Smuzhiyun #define ISL6421_OLF1 0x01
18*4882a593Smuzhiyun #define ISL6421_EN1 0x02
19*4882a593Smuzhiyun #define ISL6421_VSEL1 0x04
20*4882a593Smuzhiyun #define ISL6421_LLC1 0x08
21*4882a593Smuzhiyun #define ISL6421_ENT1 0x10
22*4882a593Smuzhiyun #define ISL6421_ISEL1 0x20
23*4882a593Smuzhiyun #define ISL6421_DCL 0x40
24*4882a593Smuzhiyun
25*4882a593Smuzhiyun #if IS_REACHABLE(CONFIG_DVB_ISL6421)
26*4882a593Smuzhiyun /* override_set and override_clear control which system register bits (above) to always set & clear */
27*4882a593Smuzhiyun extern struct dvb_frontend *isl6421_attach(struct dvb_frontend *fe, struct i2c_adapter *i2c, u8 i2c_addr,
28*4882a593Smuzhiyun u8 override_set, u8 override_clear, bool override_tone);
29*4882a593Smuzhiyun #else
isl6421_attach(struct dvb_frontend * fe,struct i2c_adapter * i2c,u8 i2c_addr,u8 override_set,u8 override_clear,bool override_tone)30*4882a593Smuzhiyun static inline struct dvb_frontend *isl6421_attach(struct dvb_frontend *fe, struct i2c_adapter *i2c, u8 i2c_addr,
31*4882a593Smuzhiyun u8 override_set, u8 override_clear, bool override_tone)
32*4882a593Smuzhiyun {
33*4882a593Smuzhiyun printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
34*4882a593Smuzhiyun return NULL;
35*4882a593Smuzhiyun }
36*4882a593Smuzhiyun #endif // CONFIG_DVB_ISL6421
37*4882a593Smuzhiyun
38*4882a593Smuzhiyun #endif
39