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/mod_devicetable.h>
  14 #include <mach/dma.h>
  15
  16 struct mcp_ops;
  17
  18 struct mcp {
  19         struct module   *owner;
  20         struct mcp_ops  *ops;
  21         spinlock_t      lock;
  22         int             use_count;
  23         unsigned int    sclk_rate;
  24         unsigned int    rw_timeout;
  25         dma_device_t    dma_audio_rd;
  26         dma_device_t    dma_audio_wr;
  27         dma_device_t    dma_telco_rd;
  28         dma_device_t    dma_telco_wr;
  29         struct device   attached_device;
  30         const char      *codec;
  31 };
  32
  33 struct mcp_ops {
  34         void            (*set_telecom_divisor)(struct mcp *, unsigned int);
  35         void            (*set_audio_divisor)(struct mcp *, unsigned int);
  36         void            (*reg_write)(struct mcp *, unsigned int, unsigned int);
  37         unsigned int    (*reg_read)(struct mcp *, unsigned int);
  38         void            (*enable)(struct mcp *);
  39         void            (*disable)(struct mcp *);
  40 };
  41
  42 void mcp_set_telecom_divisor(struct mcp *, unsigned int);
  43 void mcp_set_audio_divisor(struct mcp *, unsigned int);
  44 void mcp_reg_write(struct mcp *, unsigned int, unsigned int);
  45 unsigned int mcp_reg_read(struct mcp *, unsigned int);
  46 void mcp_enable(struct mcp *);
  47 void mcp_disable(struct mcp *);
  48 const struct mcp_device_id *mcp_get_device_id(const struct mcp *mcp);
  49 #define mcp_get_sclk_rate(mcp)  ((mcp)->sclk_rate)
  50
  51 struct mcp *mcp_host_alloc(struct device *, size_t);
  52 int mcp_host_register(struct mcp *, void *);
  53 void mcp_host_unregister(struct mcp *);
  54
  55 struct mcp_driver {
  56         struct device_driver drv;
  57         int (*probe)(struct mcp *);
  58         void (*remove)(struct mcp *);
  59         int (*suspend)(struct mcp *, pm_message_t);
  60         int (*resume)(struct mcp *);
  61         const struct mcp_device_id *id_table;
  62 };
  63
  64 int mcp_driver_register(struct mcp_driver *);
  65 void mcp_driver_unregister(struct mcp_driver *);
  66
  67 #define mcp_get_drvdata(mcp)    dev_get_drvdata(&(mcp)->attached_device)
  68 #define mcp_set_drvdata(mcp,d)  dev_set_drvdata(&(mcp)->attached_device, d)
  69
  70 #define mcp_priv(mcp)           ((void *)((mcp)+1))
  71
  72 #endif