linux/drivers/media/tuners/r820t.h
Mauro Carvalho Chehab 7063c1456f [media] r820t: Remove a warning for an unused value
Currently, the driver complains about the pre_detect var:

	drivers/media/tuners/r820t.c: In function 'r820t_sysfreq_sel':
	drivers/media/tuners/r820t.c:722:31: warning: variable 'pre_dect' set but not used [-Wunused-but-set-variable]

While rtl8232 code comments it, perhaps some other driver may use.
So, the better is to keep the code there, allowing to enable it
via r820t config data.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2013-04-25 16:07:04 -03:00

60 lines
1.6 KiB
C

/*
* Elonics R820T silicon tuner driver
*
* Copyright (C) 2012 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.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#ifndef R820T_H
#define R820T_H
#include <linux/kconfig.h>
#include "dvb_frontend.h"
enum r820t_chip {
CHIP_R820T,
CHIP_R620D,
CHIP_R828D,
CHIP_R828,
CHIP_R828S,
CHIP_R820C,
};
struct r820t_config {
u8 i2c_addr; /* 0x34 */
u32 xtal;
enum r820t_chip rafael_chip;
unsigned max_i2c_msg_len;
bool use_diplexer;
bool use_predetect;
};
#if IS_ENABLED(CONFIG_MEDIA_TUNER_R820T)
struct dvb_frontend *r820t_attach(struct dvb_frontend *fe,
struct i2c_adapter *i2c,
const struct r820t_config *cfg);
#else
static inline struct dvb_frontend *r820t_attach(struct dvb_frontend *fe,
struct i2c_adapter *i2c,
const struct r820t_config *cfg)
{
pr_warn("%s: driver disabled by Kconfig\n", __func__);
return NULL;
}
#endif
#endif