1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /*
3 * linux/drivers/mfd/mcp.h
4 *
5 * Copyright (C) 2001 Russell King, All Rights Reserved.
6 */
7 #ifndef MCP_H
8 #define MCP_H
9
10 #include <linux/device.h>
11
12 struct mcp_ops;
13
14 struct mcp {
15 struct module *owner;
16 struct mcp_ops *ops;
17 spinlock_t lock;
18 int use_count;
19 unsigned int sclk_rate;
20 unsigned int rw_timeout;
21 struct device attached_device;
22 };
23
24 struct mcp_ops {
25 void (*set_telecom_divisor)(struct mcp *, unsigned int);
26 void (*set_audio_divisor)(struct mcp *, unsigned int);
27 void (*reg_write)(struct mcp *, unsigned int, unsigned int);
28 unsigned int (*reg_read)(struct mcp *, unsigned int);
29 void (*enable)(struct mcp *);
30 void (*disable)(struct mcp *);
31 };
32
33 void mcp_set_telecom_divisor(struct mcp *, unsigned int);
34 void mcp_set_audio_divisor(struct mcp *, unsigned int);
35 void mcp_reg_write(struct mcp *, unsigned int, unsigned int);
36 unsigned int mcp_reg_read(struct mcp *, unsigned int);
37 void mcp_enable(struct mcp *);
38 void mcp_disable(struct mcp *);
39 #define mcp_get_sclk_rate(mcp) ((mcp)->sclk_rate)
40
41 struct mcp *mcp_host_alloc(struct device *, size_t);
42 int mcp_host_add(struct mcp *, void *);
43 void mcp_host_del(struct mcp *);
44 void mcp_host_free(struct mcp *);
45
46 struct mcp_driver {
47 struct device_driver drv;
48 int (*probe)(struct mcp *);
49 void (*remove)(struct mcp *);
50 };
51
52 int mcp_driver_register(struct mcp_driver *);
53 void mcp_driver_unregister(struct mcp_driver *);
54
55 #define mcp_get_drvdata(mcp) dev_get_drvdata(&(mcp)->attached_device)
56 #define mcp_set_drvdata(mcp,d) dev_set_drvdata(&(mcp)->attached_device, d)
57
58 static inline void *mcp_priv(struct mcp *mcp)
59 {
60 return mcp + 1;
61 }
62
63 #endif
64
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