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a9c4e5cfeb
If CONFIG_DVB_LNBH25 is disabled, a stub static inline function is
defined that just prints a warning about the driver being disabled
but the function return type was wrong which caused a build error.
Fixes: e025273b86 ("[media] lnbh25: LNBH25 SEC controller driver")
Reported-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com>
57 lines
1.5 KiB
C
57 lines
1.5 KiB
C
/*
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* lnbh25.c
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*
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* Driver for LNB supply and control IC LNBH25
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*
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* Copyright (C) 2014 NetUP Inc.
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* Copyright (C) 2014 Sergey Kozlov <serjk@netup.ru>
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* Copyright (C) 2014 Abylay Ospan <aospan@netup.ru>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#ifndef LNBH25_H
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#define LNBH25_H
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#include <linux/i2c.h>
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#include <linux/kconfig.h>
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#include <linux/dvb/frontend.h>
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/* 22 kHz tone enabled. Tone output controlled by DSQIN pin */
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#define LNBH25_TEN 0x01
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/* Low power mode activated (used only with 22 kHz tone output disabled) */
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#define LNBH25_LPM 0x02
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/* DSQIN input pin is set to receive external 22 kHz TTL signal source */
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#define LNBH25_EXTM 0x04
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struct lnbh25_config {
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u8 i2c_address;
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u8 data2_config;
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};
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#if IS_REACHABLE(CONFIG_DVB_LNBH25)
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struct dvb_frontend *lnbh25_attach(
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struct dvb_frontend *fe,
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struct lnbh25_config *cfg,
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struct i2c_adapter *i2c);
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#else
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static inline struct dvb_frontend *lnbh25_attach(
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struct dvb_frontend *fe,
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struct lnbh25_config *cfg,
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struct i2c_adapter *i2c)
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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
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#endif
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