linux/include/sound/tea575x-tuner.h
Hans Verkuil d4ecc83b79 [media] tea575x-tuner: update to latest V4L2 framework requirements
The tea575x-tuner module has been updated to use the latest V4L2 framework
functionality. This also required changes in the drivers that rely on it.

The tea575x changes are:

- The drivers must provide a v4l2_device struct to the tea module.
- The radio_nr module parameter must be part of the actual radio driver,
  and not of the tea module.
- Changed the frequency range to the normal 76-108 MHz range instead of
  50-150.
- Add hardware frequency seek support.
- Fix broken rxsubchans/audmode handling.
- The application can now select between stereo and mono.
- Support polling for control events.
- Add V4L2 priority handling.

And radio-sf16fmr2.c now uses the isa bus kernel framework.

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Thanks-to: Ondrej Zary <linux@rainbow-software.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-03-19 11:27:21 -03:00

69 lines
2.1 KiB
C

#ifndef __SOUND_TEA575X_TUNER_H
#define __SOUND_TEA575X_TUNER_H
/*
* ALSA driver for TEA5757/5759 Philips AM/FM tuner chips
*
* Copyright (c) 2004 Jaroslav Kysela <perex@perex.cz>
*
* 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
#include <linux/videodev2.h>
#include <media/v4l2-ctrls.h>
#include <media/v4l2-dev.h>
#include <media/v4l2-device.h>
#define TEA575X_FMIF 10700
#define TEA575X_DATA (1 << 0)
#define TEA575X_CLK (1 << 1)
#define TEA575X_WREN (1 << 2)
#define TEA575X_MOST (1 << 3)
struct snd_tea575x;
struct snd_tea575x_ops {
void (*set_pins)(struct snd_tea575x *tea, u8 pins);
u8 (*get_pins)(struct snd_tea575x *tea);
void (*set_direction)(struct snd_tea575x *tea, bool output);
};
struct snd_tea575x {
struct v4l2_device *v4l2_dev;
struct video_device vd; /* video device */
int radio_nr; /* radio_nr */
bool tea5759; /* 5759 chip is present */
bool cannot_read_data; /* Device cannot read the data pin */
bool mute; /* Device is muted? */
bool stereo; /* receiving stereo */
bool tuned; /* tuned to a station */
unsigned int val; /* hw value */
u32 freq; /* frequency */
struct mutex mutex;
struct snd_tea575x_ops *ops;
void *private_data;
u8 card[32];
u8 bus_info[32];
struct v4l2_ctrl_handler ctrl_handler;
int (*ext_init)(struct snd_tea575x *tea);
};
int snd_tea575x_init(struct snd_tea575x *tea);
void snd_tea575x_exit(struct snd_tea575x *tea);
#endif /* __SOUND_TEA575X_TUNER_H */