LXR linux/include/linux/mfd/mcp.h

   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