linux/sound/firewire/isight.c

// SPDX-License-Identifier: GPL-2.0-only
/*
 * Apple iSight audio driver
 *
 * Copyright (c) Clemens Ladisch <[email protected]>
 */

#include <asm/byteorder.h>
#include <linux/delay.h>
#include <linux/device.h>
#include <linux/firewire.h>
#include <linux/firewire-constants.h>
#include <linux/module.h>
#include <linux/mod_devicetable.h>
#include <linux/mutex.h>
#include <linux/string.h>
#include <sound/control.h>
#include <sound/core.h>
#include <sound/initval.h>
#include <sound/pcm.h>
#include <sound/tlv.h>
#include "lib.h"
#include "iso-resources.h"
#include "packets-buffer.h"

#define OUI_APPLE …
#define MODEL_APPLE_ISIGHT …
#define SW_ISIGHT_AUDIO …

#define REG_AUDIO_ENABLE …
#define AUDIO_ENABLE …
#define REG_DEF_AUDIO_GAIN …
#define REG_GAIN_RAW_START …
#define REG_GAIN_RAW_END …
#define REG_GAIN_DB_START …
#define REG_GAIN_DB_END …
#define REG_SAMPLE_RATE_INQUIRY …
#define REG_ISO_TX_CONFIG …
#define SPEED_SHIFT …
#define REG_SAMPLE_RATE …
#define RATE_48000 …
#define REG_GAIN …
#define REG_MUTE …

#define MAX_FRAMES_PER_PACKET …

#define QUEUE_LENGTH …

struct isight { … };

struct audio_payload { … };

MODULE_DESCRIPTION(…) …;
MODULE_AUTHOR(…) …;
MODULE_LICENSE(…) …;

static struct fw_iso_packet audio_packet = …;

static void isight_update_pointers(struct isight *isight, unsigned int count)
{ … }

static void isight_samples(struct isight *isight,
			   const __be16 *samples, unsigned int count)
{ … }

static void isight_pcm_abort(struct isight *isight)
{ … }

static void isight_dropped_samples(struct isight *isight, unsigned int total)
{ … }

static void isight_packet(struct fw_iso_context *context, u32 cycle,
			  size_t header_length, void *header, void *data)
{ … }

static int isight_connect(struct isight *isight)
{ … }

static int isight_open(struct snd_pcm_substream *substream)
{ … }

static int isight_close(struct snd_pcm_substream *substream)
{ … }

static int isight_hw_params(struct snd_pcm_substream *substream,
			    struct snd_pcm_hw_params *hw_params)
{ … }

static int reg_read(struct isight *isight, int offset, __be32 *value)
{ … }

static int reg_write(struct isight *isight, int offset, __be32 value)
{ … }

static void isight_stop_streaming(struct isight *isight)
{ … }

static int isight_hw_free(struct snd_pcm_substream *substream)
{ … }

static int isight_start_streaming(struct isight *isight)
{ … }

static int isight_prepare(struct snd_pcm_substream *substream)
{ … }

static int isight_trigger(struct snd_pcm_substream *substream, int cmd)
{ … }

static snd_pcm_uframes_t isight_pointer(struct snd_pcm_substream *substream)
{ … }

static int isight_create_pcm(struct isight *isight)
{ … }

static int isight_gain_info(struct snd_kcontrol *ctl,
			    struct snd_ctl_elem_info *info)
{ … }

static int isight_gain_get(struct snd_kcontrol *ctl,
			   struct snd_ctl_elem_value *value)
{ … }

static int isight_gain_put(struct snd_kcontrol *ctl,
			   struct snd_ctl_elem_value *value)
{ … }

static int isight_mute_get(struct snd_kcontrol *ctl,
			   struct snd_ctl_elem_value *value)
{ … }

static int isight_mute_put(struct snd_kcontrol *ctl,
			   struct snd_ctl_elem_value *value)
{ … }

static int isight_create_mixer(struct isight *isight)
{ … }

static void isight_card_free(struct snd_card *card)
{ … }

static u64 get_unit_base(struct fw_unit *unit)
{ … }

static int isight_probe(struct fw_unit *unit,
			const struct ieee1394_device_id *id)
{ … }

static void isight_bus_reset(struct fw_unit *unit)
{ … }

static void isight_remove(struct fw_unit *unit)
{ … }

static const struct ieee1394_device_id isight_id_table[] = …;
MODULE_DEVICE_TABLE(ieee1394, isight_id_table);

static struct fw_driver isight_driver = …;

static int __init alsa_isight_init(void)
{ … }

static void __exit alsa_isight_exit(void)
{ … }

module_init(…) …;
module_exit(alsa_isight_exit);