/* SPDX-License-Identifier: GPL-2.0-only */
|
/*
|
* i2sbus driver -- private definitions
|
*
|
* Copyright 2006 Johannes Berg <johannes@sipsolutions.net>
|
*/
|
#ifndef __I2SBUS_H
|
#define __I2SBUS_H
|
#include <linux/interrupt.h>
|
#include <linux/spinlock.h>
|
#include <linux/mutex.h>
|
#include <linux/completion.h>
|
|
#include <sound/pcm.h>
|
|
#include <asm/prom.h>
|
#include <asm/pmac_feature.h>
|
#include <asm/dbdma.h>
|
|
#include "interface.h"
|
#include "../soundbus.h"
|
|
struct i2sbus_control {
|
struct list_head list;
|
struct macio_chip *macio;
|
};
|
|
#define MAX_DBDMA_COMMANDS 32
|
|
struct dbdma_command_mem {
|
dma_addr_t bus_addr;
|
dma_addr_t bus_cmd_start;
|
struct dbdma_cmd *cmds;
|
void *space;
|
int size;
|
u32 running:1;
|
u32 stopping:1;
|
};
|
|
struct pcm_info {
|
u32 created:1, /* has this direction been created with alsa? */
|
active:1; /* is this stream active? */
|
/* runtime information */
|
struct snd_pcm_substream *substream;
|
int current_period;
|
u32 frame_count;
|
struct dbdma_command_mem dbdma_ring;
|
volatile struct dbdma_regs __iomem *dbdma;
|
struct completion *stop_completion;
|
};
|
|
enum {
|
aoa_resource_i2smmio = 0,
|
aoa_resource_txdbdma,
|
aoa_resource_rxdbdma,
|
};
|
|
struct i2sbus_dev {
|
struct soundbus_dev sound;
|
struct macio_dev *macio;
|
struct i2sbus_control *control;
|
volatile struct i2s_interface_regs __iomem *intfregs;
|
|
struct resource resources[3];
|
struct resource *allocated_resource[3];
|
int interrupts[3];
|
char rnames[3][32];
|
|
/* info about currently active substreams */
|
struct pcm_info out, in;
|
snd_pcm_format_t format;
|
unsigned int rate;
|
|
/* list for a single controller */
|
struct list_head item;
|
/* number of bus on controller */
|
int bus_number;
|
/* for use by control layer */
|
struct pmf_function *enable,
|
*cell_enable,
|
*cell_disable,
|
*clock_enable,
|
*clock_disable;
|
|
/* locks */
|
/* spinlock for low-level interrupt locking */
|
spinlock_t low_lock;
|
/* mutex for high-level consistency */
|
struct mutex lock;
|
};
|
|
#define soundbus_dev_to_i2sbus_dev(sdev) \
|
container_of(sdev, struct i2sbus_dev, sound)
|
|
/* pcm specific functions */
|
extern int
|
i2sbus_attach_codec(struct soundbus_dev *dev, struct snd_card *card,
|
struct codec_info *ci, void *data);
|
extern void
|
i2sbus_detach_codec(struct soundbus_dev *dev, void *data);
|
extern irqreturn_t
|
i2sbus_tx_intr(int irq, void *devid);
|
extern irqreturn_t
|
i2sbus_rx_intr(int irq, void *devid);
|
|
extern void i2sbus_wait_for_stop_both(struct i2sbus_dev *i2sdev);
|
extern void i2sbus_pcm_prepare_both(struct i2sbus_dev *i2sdev);
|
|
/* control specific functions */
|
extern int i2sbus_control_init(struct macio_dev* dev,
|
struct i2sbus_control **c);
|
extern void i2sbus_control_destroy(struct i2sbus_control *c);
|
extern int i2sbus_control_add_dev(struct i2sbus_control *c,
|
struct i2sbus_dev *i2sdev);
|
extern void i2sbus_control_remove_dev(struct i2sbus_control *c,
|
struct i2sbus_dev *i2sdev);
|
extern int i2sbus_control_enable(struct i2sbus_control *c,
|
struct i2sbus_dev *i2sdev);
|
extern int i2sbus_control_cell(struct i2sbus_control *c,
|
struct i2sbus_dev *i2sdev,
|
int enable);
|
extern int i2sbus_control_clock(struct i2sbus_control *c,
|
struct i2sbus_dev *i2sdev,
|
int enable);
|
#endif /* __I2SBUS_H */
|
