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 
mcp_priv(struct mcp * mcp)58 static inline void *mcp_priv(struct mcp *mcp)
59 {
60 	return mcp + 1;
61 }
62 
63 #endif
64