1 /*
2 * linux/drivers/mfd/mcp.h
3 *
4 * Copyright (C) 2001 Russell King, All Rights Reserved.
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License.
9 */
10 #ifndef MCP_H
11 #define MCP_H
12
13 struct mcp_ops;
14
15 struct mcp {
16 struct module *owner;
17 struct mcp_ops *ops;
18 spinlock_t lock;
19 int use_count;
20 unsigned int sclk_rate;
21 unsigned int rw_timeout;
22 dma_device_t dma_audio_rd;
23 dma_device_t dma_audio_wr;
24 dma_device_t dma_telco_rd;
25 dma_device_t dma_telco_wr;
26 struct device attached_device;
27 };
28
29 struct mcp_ops {
30 void (*set_telecom_divisor)(struct mcp *, unsigned int);
31 void (*set_audio_divisor)(struct mcp *, unsigned int);
32 void (*reg_write)(struct mcp *, unsigned int, unsigned int);
33 unsigned int (*reg_read)(struct mcp *, unsigned int);
34 void (*enable)(struct mcp *);
35 void (*disable)(struct mcp *);
36 };
37
38 void mcp_set_telecom_divisor(struct mcp *, unsigned int);
39 void mcp_set_audio_divisor(struct mcp *, unsigned int);
40 void mcp_reg_write(struct mcp *, unsigned int, unsigned int);
41 unsigned int mcp_reg_read(struct mcp *, unsigned int);
42 void mcp_enable(struct mcp *);
43 void mcp_disable(struct mcp *);
44 #define mcp_get_sclk_rate(mcp) ((mcp)->sclk_rate)
45
46 struct mcp *mcp_host_alloc(struct device *, size_t);
47 int mcp_host_register(struct mcp *);
48 void mcp_host_unregister(struct mcp *);
49
50 struct mcp_driver {
51 struct device_driver drv;
52 int (*probe)(struct mcp *);
53 void (*remove)(struct mcp *);
54 int (*suspend)(struct mcp *, pm_message_t);
55 int (*resume)(struct mcp *);
56 };
57
58 int mcp_driver_register(struct mcp_driver *);
59 void mcp_driver_unregister(struct mcp_driver *);
60
61 #define mcp_get_drvdata(mcp) dev_get_drvdata(&(mcp)->attached_device)
62 #define mcp_set_drvdata(mcp,d) dev_set_drvdata(&(mcp)->attached_device, d)
63
64 #define mcp_priv(mcp) ((void *)((mcp)+1))
65
66 #endif
67
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