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#include <linux/device.h> 14 15struct mcp_ops; 16 17struct mcp { 18 struct module *owner; 19 struct mcp_ops *ops; 20 spinlock_t lock; 21 int use_count; 22 unsigned int sclk_rate; 23 unsigned int rw_timeout; 24 struct device attached_device; 25}; 26 27struct mcp_ops { 28 void (*set_telecom_divisor)(struct mcp *, unsigned int); 29 void (*set_audio_divisor)(struct mcp *, unsigned int); 30 void (*reg_write)(struct mcp *, unsigned int, unsigned int); 31 unsigned int (*reg_read)(struct mcp *, unsigned int); 32 void (*enable)(struct mcp *); 33 void (*disable)(struct mcp *); 34}; 35 36void mcp_set_telecom_divisor(struct mcp *, unsigned int); 37void mcp_set_audio_divisor(struct mcp *, unsigned int); 38void mcp_reg_write(struct mcp *, unsigned int, unsigned int); 39unsigned int mcp_reg_read(struct mcp *, unsigned int); 40void mcp_enable(struct mcp *); 41void mcp_disable(struct mcp *); 42#define mcp_get_sclk_rate(mcp) ((mcp)->sclk_rate) 43 44struct mcp *mcp_host_alloc(struct device *, size_t); 45int mcp_host_add(struct mcp *, void *); 46void mcp_host_del(struct mcp *); 47void mcp_host_free(struct mcp *); 48 49struct mcp_driver { 50 struct device_driver drv; 51 int (*probe)(struct mcp *); 52 void (*remove)(struct mcp *); 53}; 54 55int mcp_driver_register(struct mcp_driver *); 56void mcp_driver_unregister(struct mcp_driver *); 57 58#define mcp_get_drvdata(mcp) dev_get_drvdata(&(mcp)->attached_device) 59#define mcp_set_drvdata(mcp,d) dev_set_drvdata(&(mcp)->attached_device, d) 60 61static inline void *mcp_priv(struct mcp *mcp) 62{ 63 return mcp + 1; 64} 65 66#endif 67