include/linux/amba/bus.h

   1 /*
   2  *  linux/include/amba/bus.h
   3  *
   4  *  This device type deals with ARM PrimeCells and anything else that
   5  *  presents a proper CID (0xB105F00D) at the end of the I/O register
   6  *  region or that is derived from a PrimeCell.
   7  *
   8  *  Copyright (C) 2003 Deep Blue Solutions Ltd, All Rights Reserved.
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License version 2 as
  12  * published by the Free Software Foundation.
  13  */
  14 #ifndef ASMARM_AMBA_H
  15 #define ASMARM_AMBA_H
  16
  17 #include <linux/device.h>
  18 #include <linux/resource.h>
  19
  20 #define AMBA_NR_IRQS    2
  21
  22 struct amba_device {
  23         struct device           dev;
  24         struct resource         res;
  25         u64                     dma_mask;
  26         unsigned int            periphid;
  27         unsigned int            irq[AMBA_NR_IRQS];
  28 };
  29
  30 struct amba_id {
  31         unsigned int            id;
  32         unsigned int            mask;
  33         void                    *data;
  34 };
  35
  36 struct amba_driver {
  37         struct device_driver    drv;
  38         int                     (*probe)(struct amba_device *, struct amba_id *);
  39         int                     (*remove)(struct amba_device *);
  40         void                    (*shutdown)(struct amba_device *);
  41         int                     (*suspend)(struct amba_device *, pm_message_t);
  42         int                     (*resume)(struct amba_device *);
  43         struct amba_id          *id_table;
  44 };
  45
  46 enum amba_vendor {
  47         AMBA_VENDOR_ARM = 0x41,
  48         AMBA_VENDOR_ST = 0x80,
  49 };
  50
  51 #define amba_get_drvdata(d)     dev_get_drvdata(&d->dev)
  52 #define amba_set_drvdata(d,p)   dev_set_drvdata(&d->dev, p)
  53
  54 int amba_driver_register(struct amba_driver *);
  55 void amba_driver_unregister(struct amba_driver *);
  56 int amba_device_register(struct amba_device *, struct resource *);
  57 void amba_device_unregister(struct amba_device *);
  58 struct amba_device *amba_find_device(const char *, struct device *, unsigned int, unsigned int);
  59 int amba_request_regions(struct amba_device *, const char *);
  60 void amba_release_regions(struct amba_device *);
  61
  62 #define amba_config(d)  (((d)->periphid >> 24) & 0xff)
  63 #define amba_rev(d)     (((d)->periphid >> 20) & 0x0f)
  64 #define amba_manf(d)    (((d)->periphid >> 12) & 0xff)
  65 #define amba_part(d)    ((d)->periphid & 0xfff)
  66
  67 #endif