linux/drivers/media/dvb-frontends/hd29l2.h
Mauro Carvalho Chehab 782d8b743a [media] dvb-frontends: use IS_ENABLED
Instead of checking everywhere there for 3 symbols, use instead
IS_ENABLED macro.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-03-23 09:03:59 -03:00

67 lines
1.8 KiB
C

/*
* HDIC HD29L2 DMB-TH demodulator driver
*
* Copyright (C) 2011 Metropolia University of Applied Sciences, Electria R&D
*
* Author: Antti Palosaari <crope@iki.fi>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#ifndef HD29L2_H
#define HD29L2_H
#include <linux/kconfig.h>
#include <linux/dvb/frontend.h>
struct hd29l2_config {
/*
* demodulator I2C address
*/
u8 i2c_addr;
/*
* tuner I2C address
* only needed when tuner is behind demod I2C-gate
*/
u8 tuner_i2c_addr;
/*
* TS settings
*/
#define HD29L2_TS_SERIAL 0x00
#define HD29L2_TS_PARALLEL 0x80
#define HD29L2_TS_CLK_NORMAL 0x40
#define HD29L2_TS_CLK_INVERTED 0x00
#define HD29L2_TS_CLK_GATED 0x20
#define HD29L2_TS_CLK_FREE 0x00
u8 ts_mode;
};
#if IS_ENABLED(CONFIG_DVB_HD29L2)
extern struct dvb_frontend *hd29l2_attach(const struct hd29l2_config *config,
struct i2c_adapter *i2c);
#else
static inline struct dvb_frontend *hd29l2_attach(
const struct hd29l2_config *config, struct i2c_adapter *i2c)
{
pr_warn("%s: driver disabled by Kconfig\n", __func__);
return NULL;
}
#endif
#endif /* HD29L2_H */