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7 #ifndef __I2SBUS_H
8 #define __I2SBUS_H
9 #include <linux/interrupt.h>
10 #include <linux/spinlock.h>
11 #include <linux/mutex.h>
12 #include <linux/completion.h>
13
14 #include <sound/pcm.h>
15
16 #include <asm/prom.h>
17 #include <asm/pmac_feature.h>
18 #include <asm/dbdma.h>
19
20 #include "interface.h"
21 #include "../soundbus.h"
22
23 struct i2sbus_control {
24 struct list_head list;
25 struct macio_chip *macio;
26 };
27
28 #define MAX_DBDMA_COMMANDS 32
29
30 struct dbdma_command_mem {
31 dma_addr_t bus_addr;
32 dma_addr_t bus_cmd_start;
33 struct dbdma_cmd *cmds;
34 void *space;
35 int size;
36 u32 running:1;
37 u32 stopping:1;
38 };
39
40 struct pcm_info {
41 u32 created:1,
42 active:1;
43
44 struct snd_pcm_substream *substream;
45 int current_period;
46 u32 frame_count;
47 struct dbdma_command_mem dbdma_ring;
48 volatile struct dbdma_regs __iomem *dbdma;
49 struct completion *stop_completion;
50 };
51
52 enum {
53 aoa_resource_i2smmio = 0,
54 aoa_resource_txdbdma,
55 aoa_resource_rxdbdma,
56 };
57
58 struct i2sbus_dev {
59 struct soundbus_dev sound;
60 struct macio_dev *macio;
61 struct i2sbus_control *control;
62 volatile struct i2s_interface_regs __iomem *intfregs;
63
64 struct resource resources[3];
65 struct resource *allocated_resource[3];
66 int interrupts[3];
67 char rnames[3][32];
68
69
70 struct pcm_info out, in;
71 snd_pcm_format_t format;
72 unsigned int rate;
73
74
75 struct list_head item;
76
77 int bus_number;
78
79 struct pmf_function *enable,
80 *cell_enable,
81 *cell_disable,
82 *clock_enable,
83 *clock_disable;
84
85
86
87 spinlock_t low_lock;
88
89 struct mutex lock;
90 };
91
92 #define soundbus_dev_to_i2sbus_dev(sdev) \
93 container_of(sdev, struct i2sbus_dev, sound)
94
95
96 extern int
97 i2sbus_attach_codec(struct soundbus_dev *dev, struct snd_card *card,
98 struct codec_info *ci, void *data);
99 extern void
100 i2sbus_detach_codec(struct soundbus_dev *dev, void *data);
101 extern irqreturn_t
102 i2sbus_tx_intr(int irq, void *devid);
103 extern irqreturn_t
104 i2sbus_rx_intr(int irq, void *devid);
105
106 extern void i2sbus_wait_for_stop_both(struct i2sbus_dev *i2sdev);
107 extern void i2sbus_pcm_prepare_both(struct i2sbus_dev *i2sdev);
108
109
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,
121 int enable);
122 extern int i2sbus_control_clock(struct i2sbus_control *c,
123 struct i2sbus_dev *i2sdev,
124 int enable);
125 #endif