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9dc353c67c
Instead of checking everywhere there for 3 symbols, use instead IS_ENABLED macro. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
67 lines
1.8 KiB
C
67 lines
1.8 KiB
C
/*
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* Infineon TUA 9001 silicon tuner driver
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*
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* Copyright (C) 2009 Antti Palosaari <crope@iki.fi>
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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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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#ifndef TUA9001_H
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#define TUA9001_H
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#include <linux/kconfig.h>
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#include "dvb_frontend.h"
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struct tua9001_config {
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/*
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* I2C address
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*/
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u8 i2c_addr;
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};
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/*
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* TUA9001 I/O PINs:
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*
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* CEN - chip enable
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* 0 = chip disabled (chip off)
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* 1 = chip enabled (chip on)
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*
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* RESETN - chip reset
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* 0 = reset disabled (chip reset off)
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* 1 = reset enabled (chip reset on)
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*
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* RXEN - RX enable
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* 0 = RX disabled (chip idle)
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* 1 = RX enabled (chip tuned)
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*/
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#define TUA9001_CMD_CEN 0
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#define TUA9001_CMD_RESETN 1
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#define TUA9001_CMD_RXEN 2
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#if IS_ENABLED(CONFIG_MEDIA_TUNER_TUA9001)
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extern struct dvb_frontend *tua9001_attach(struct dvb_frontend *fe,
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struct i2c_adapter *i2c, struct tua9001_config *cfg);
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#else
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static inline struct dvb_frontend *tua9001_attach(struct dvb_frontend *fe,
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struct i2c_adapter *i2c, struct tua9001_config *cfg)
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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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