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
  15 struct mcp_ops;
  16
  17 struct 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
  27 struct 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
  36 void mcp_set_telecom_divisor(struct mcp *, unsigned int);
  37 void mcp_set_audio_divisor(struct mcp *, unsigned int);
  38 void mcp_reg_write(struct mcp *, unsigned int, unsigned int);
  39 unsigned int mcp_reg_read(struct mcp *, unsigned int);
  40 void mcp_enable(struct mcp *);
  41 void mcp_disable(struct mcp *);
  42 #define mcp_get_sclk_rate(mcp)  ((mcp)->sclk_rate)
  43
  44 struct mcp *mcp_host_alloc(struct device *, size_t);
  45 int mcp_host_add(struct mcp *, void *);
  46 void mcp_host_del(struct mcp *);
  47 void mcp_host_free(struct mcp *);
  48
  49 struct mcp_driver {
  50         struct device_driver drv;
  51         int (*probe)(struct mcp *);
  52         void (*remove)(struct mcp *);
  53 };
  54
  55 int mcp_driver_register(struct mcp_driver *);
  56 void 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
  61 static inline void *mcp_priv(struct mcp *mcp)
  62 {
  63         return mcp + 1;
  64 }
  65
  66 #endif