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