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00c78a3728
Changeset 9b174527e7 added this new macro, ensuring that it
is true only if the function is actually reachable.
However, newer drivers were added since when it was written.
So, change those drivers to also use it.
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
63 lines
1.6 KiB
C
63 lines
1.6 KiB
C
/*
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Driver for Silicon Labs SI2165 DVB-C/-T Demodulator
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Copyright (C) 2013-2014 Matthias Schwarzott <zzam@gentoo.org>
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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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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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References:
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http://www.silabs.com/Support%20Documents/TechnicalDocs/Si2165-short.pdf
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*/
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#ifndef _DVB_SI2165_H
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#define _DVB_SI2165_H
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#include <linux/dvb/frontend.h>
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enum {
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SI2165_MODE_OFF = 0x00,
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SI2165_MODE_PLL_EXT = 0x20,
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SI2165_MODE_PLL_XTAL = 0x21
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};
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struct si2165_config {
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/* i2c addr
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* possible values: 0x64,0x65,0x66,0x67 */
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u8 i2c_addr;
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/* external clock or XTAL */
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u8 chip_mode;
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/* frequency of external clock or xtal in Hz
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* possible values: 4000000, 16000000, 20000000, 240000000, 27000000
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*/
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u32 ref_freq_Hz;
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/* invert the spectrum */
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bool inversion;
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};
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#if IS_REACHABLE(CONFIG_DVB_SI2165)
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struct dvb_frontend *si2165_attach(
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const struct si2165_config *config,
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struct i2c_adapter *i2c);
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#else
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static inline struct dvb_frontend *si2165_attach(
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const struct si2165_config *config,
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struct i2c_adapter *i2c)
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{
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pr_warn("%s: driver disabled by Kconfig\n", __func__);
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return NULL;
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}
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#endif /* CONFIG_DVB_SI2165 */
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#endif /* _DVB_SI2165_H */
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