1 /* SPDX-License-Identifier: GPL-2.0-only */
3 * i2sbus driver -- private definitions
5 * Copyright 2006 Johannes Berg <johannes@sipsolutions.net>
9 #include <linux/interrupt.h>
10 #include <linux/spinlock.h>
11 #include <linux/mutex.h>
12 #include <linux/completion.h>
14 #include <sound/pcm.h>
17 #include <asm/pmac_feature.h>
18 #include <asm/dbdma.h>
20 #include "interface.h"
21 #include "../soundbus.h"
23 struct i2sbus_control {
24 struct list_head list;
25 struct macio_chip *macio;
28 #define MAX_DBDMA_COMMANDS 32
30 struct dbdma_command_mem {
32 dma_addr_t bus_cmd_start;
33 struct dbdma_cmd *cmds;
41 u32 created:1, /* has this direction been created with alsa? */
42 active:1; /* is this stream active? */
43 /* runtime information */
44 struct snd_pcm_substream *substream;
47 struct dbdma_command_mem dbdma_ring;
48 volatile struct dbdma_regs __iomem *dbdma;
49 struct completion *stop_completion;
53 aoa_resource_i2smmio = 0,
59 struct soundbus_dev sound;
60 struct macio_dev *macio;
61 struct i2sbus_control *control;
62 volatile struct i2s_interface_regs __iomem *intfregs;
64 struct resource resources[3];
65 struct resource *allocated_resource[3];
69 /* info about currently active substreams */
70 struct pcm_info out, in;
71 snd_pcm_format_t format;
74 /* list for a single controller */
75 struct list_head item;
76 /* number of bus on controller */
78 /* for use by control layer */
79 struct pmf_function *enable,
86 /* spinlock for low-level interrupt locking */
88 /* mutex for high-level consistency */
92 #define soundbus_dev_to_i2sbus_dev(sdev) \
93 container_of(sdev, struct i2sbus_dev, sound)
95 /* pcm specific functions */
97 i2sbus_attach_codec(struct soundbus_dev *dev, struct snd_card *card,
98 struct codec_info *ci, void *data);
100 i2sbus_detach_codec(struct soundbus_dev *dev, void *data);
102 i2sbus_tx_intr(int irq, void *devid);
104 i2sbus_rx_intr(int irq, void *devid);
106 extern void i2sbus_wait_for_stop_both(struct i2sbus_dev *i2sdev);
107 extern void i2sbus_pcm_prepare_both(struct i2sbus_dev *i2sdev);
109 /* control specific functions */
110 extern int i2sbus_control_init(struct macio_dev* dev,
111 struct i2sbus_control **c);
112 extern void i2sbus_control_destroy(struct i2sbus_control *c);
113 extern int i2sbus_control_add_dev(struct i2sbus_control *c,
114 struct i2sbus_dev *i2sdev);
115 extern void i2sbus_control_remove_dev(struct i2sbus_control *c,
116 struct i2sbus_dev *i2sdev);
117 extern int i2sbus_control_enable(struct i2sbus_control *c,
118 struct i2sbus_dev *i2sdev);
119 extern int i2sbus_control_cell(struct i2sbus_control *c,
120 struct i2sbus_dev *i2sdev,
122 extern int i2sbus_control_clock(struct i2sbus_control *c,
123 struct i2sbus_dev *i2sdev,
125 #endif /* __I2SBUS_H */