102 lines
3.0 KiB
C
102 lines
3.0 KiB
C
|
/* SPDX-License-Identifier: GPL-2.0-only */
|
||
|
|
/*
|
||
|
|
* Framework for ISA radio drivers.
|
||
|
|
* This takes care of all the V4L2 scaffolding, allowing the ISA drivers
|
||
|
|
* to concentrate on the actual hardware operation.
|
||
|
|
*
|
||
|
|
* Copyright (C) 2012 Hans Verkuil <hans.verkuil@cisco.com>
|
||
|
|
*/
|
||
|
|
|
||
|
|
#ifndef _RADIO_ISA_H_
|
||
|
|
#define _RADIO_ISA_H_
|
||
|
|
|
||
|
|
#include <linux/isa.h>
|
||
|
|
#include <linux/pnp.h>
|
||
|
|
#include <linux/videodev2.h>
|
||
|
|
#include <media/v4l2-device.h>
|
||
|
|
#include <media/v4l2-ctrls.h>
|
||
|
|
|
||
|
|
struct radio_isa_driver;
|
||
|
|
struct radio_isa_ops;
|
||
|
|
|
||
|
|
/* Core structure for radio ISA cards */
|
||
|
|
struct radio_isa_card {
|
||
|
|
const struct radio_isa_driver *drv;
|
||
|
|
struct v4l2_device v4l2_dev;
|
||
|
|
struct v4l2_ctrl_handler hdl;
|
||
|
|
struct video_device vdev;
|
||
|
|
struct mutex lock;
|
||
|
|
const struct radio_isa_ops *ops;
|
||
|
|
struct { /* mute/volume cluster */
|
||
|
|
struct v4l2_ctrl *mute;
|
||
|
|
struct v4l2_ctrl *volume;
|
||
|
|
};
|
||
|
|
/* I/O port */
|
||
|
|
int io;
|
||
|
|
|
||
|
|
/* Card is in stereo audio mode */
|
||
|
|
bool stereo;
|
||
|
|
/* Current frequency */
|
||
|
|
u32 freq;
|
||
|
|
};
|
||
|
|
|
||
|
|
struct radio_isa_ops {
|
||
|
|
/* Allocate and initialize a radio_isa_card struct */
|
||
|
|
struct radio_isa_card *(*alloc)(void);
|
||
|
|
/* Probe whether a card is present at the given port */
|
||
|
|
bool (*probe)(struct radio_isa_card *isa, int io);
|
||
|
|
/* Special card initialization can be done here, this is called after
|
||
|
|
* the standard controls are registered, but before they are setup,
|
||
|
|
* thus allowing drivers to add their own controls here. */
|
||
|
|
int (*init)(struct radio_isa_card *isa);
|
||
|
|
/* Set mute and volume. */
|
||
|
|
int (*s_mute_volume)(struct radio_isa_card *isa, bool mute, int volume);
|
||
|
|
/* Set frequency */
|
||
|
|
int (*s_frequency)(struct radio_isa_card *isa, u32 freq);
|
||
|
|
/* Set stereo/mono audio mode */
|
||
|
|
int (*s_stereo)(struct radio_isa_card *isa, bool stereo);
|
||
|
|
/* Get rxsubchans value for VIDIOC_G_TUNER */
|
||
|
|
u32 (*g_rxsubchans)(struct radio_isa_card *isa);
|
||
|
|
/* Get the signal strength for VIDIOC_G_TUNER */
|
||
|
|
u32 (*g_signal)(struct radio_isa_card *isa);
|
||
|
|
};
|
||
|
|
|
||
|
|
/* Top level structure needed to instantiate the cards */
|
||
|
|
struct radio_isa_driver {
|
||
|
|
struct isa_driver driver;
|
||
|
|
#ifdef CONFIG_PNP
|
||
|
|
struct pnp_driver pnp_driver;
|
||
|
|
#endif
|
||
|
|
const struct radio_isa_ops *ops;
|
||
|
|
/* The module_param_array with the specified I/O ports */
|
||
|
|
int *io_params;
|
||
|
|
/* The module_param_array with the radio_nr values */
|
||
|
|
int *radio_nr_params;
|
||
|
|
/* Whether we should probe for possible cards */
|
||
|
|
bool probe;
|
||
|
|
/* The list of possible I/O ports */
|
||
|
|
const int *io_ports;
|
||
|
|
/* The size of that list */
|
||
|
|
int num_of_io_ports;
|
||
|
|
/* The region size to request */
|
||
|
|
unsigned region_size;
|
||
|
|
/* The name of the card */
|
||
|
|
const char *card;
|
||
|
|
/* Card can capture stereo audio */
|
||
|
|
bool has_stereo;
|
||
|
|
/* The maximum volume for the volume control. If 0, then there
|
||
|
|
is no volume control possible. */
|
||
|
|
int max_volume;
|
||
|
|
};
|
||
|
|
|
||
|
|
int radio_isa_match(struct device *pdev, unsigned int dev);
|
||
|
|
int radio_isa_probe(struct device *pdev, unsigned int dev);
|
||
|
|
int radio_isa_remove(struct device *pdev, unsigned int dev);
|
||
|
|
#ifdef CONFIG_PNP
|
||
|
|
int radio_isa_pnp_probe(struct pnp_dev *dev,
|
||
|
|
const struct pnp_device_id *dev_id);
|
||
|
|
void radio_isa_pnp_remove(struct pnp_dev *dev);
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#endif
|