kernel/linux/arch/arm/mach-integrator/lm.c

   1 /*
   2  *  linux/arch/arm/mach-integrator/lm.c
   3  *
   4  *  Copyright (C) 2003 Deep Blue Solutions Ltd, 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 version 2 as
   8  * published by the Free Software Foundation.
   9  */
  10 #include <linux/module.h>
  11 #include <linux/init.h>
  12 #include <linux/device.h>
  13
  14 #include <asm/arch/lm.h>
  15
  16 #define to_lm_device(d) container_of(d, struct lm_device, dev)
  17 #define to_lm_driver(d) container_of(d, struct lm_driver, drv)
  18
  19 static int lm_match(struct device *dev, struct device_driver *drv)
  20 {
  21         return 1;
  22 }
  23
  24 static struct bus_type lm_bustype = {
  25         .name           = "logicmodule",
  26         .match          = lm_match,
  27 //      .suspend        = lm_suspend,
  28 //      .resume         = lm_resume,
  29 };
  30
  31 static int __init lm_init(void)
  32 {
  33         return bus_register(&lm_bustype);
  34 }
  35
  36 postcore_initcall(lm_init);
  37
  38 static int lm_bus_probe(struct device *dev)
  39 {
  40         struct lm_device *lmdev = to_lm_device(dev);
  41         struct lm_driver *lmdrv = to_lm_driver(dev->driver);
  42
  43         return lmdrv->probe(lmdev);
  44 }
  45
  46 static int lm_bus_remove(struct device *dev)
  47 {
  48         struct lm_device *lmdev = to_lm_device(dev);
  49         struct lm_driver *lmdrv = to_lm_driver(dev->driver);
  50
  51         lmdrv->remove(lmdev);
  52         return 0;
  53 }
  54
  55 int lm_driver_register(struct lm_driver *drv)
  56 {
  57         drv->drv.bus = &lm_bustype;
  58         drv->drv.probe = lm_bus_probe;
  59         drv->drv.remove = lm_bus_remove;
  60
  61         return driver_register(&drv->drv);
  62 }
  63
  64 void lm_driver_unregister(struct lm_driver *drv)
  65 {
  66         driver_unregister(&drv->drv);
  67 }
  68
  69 static void lm_device_release(struct device *dev)
  70 {
  71         struct lm_device *d = to_lm_device(dev);
  72
  73         kfree(d);
  74 }
  75
  76 int lm_device_register(struct lm_device *dev)
  77 {
  78         int ret;
  79
  80         dev->dev.release = lm_device_release;
  81         dev->dev.bus = &lm_bustype;
  82
  83         snprintf(dev->dev.bus_id, sizeof(dev->dev.bus_id), "lm%d", dev->id);
  84         dev->resource.name = dev->dev.bus_id;
  85
  86         ret = request_resource(&iomem_resource, &dev->resource);
  87         if (ret == 0) {
  88                 ret = device_register(&dev->dev);
  89                 if (ret)
  90                         release_resource(&dev->resource);
  91         }
  92         return ret;
  93 }
  94
  95 EXPORT_SYMBOL(lm_driver_register);
  96 EXPORT_SYMBOL(lm_driver_unregister);