linux/include/linux/vlynq.h
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   1/*
   2 * Copyright (C) 2006, 2007 Eugene Konev <ejka@openwrt.org>
   3 *
   4 * This program is free software; you can redistribute it and/or modify
   5 * it under the terms of the GNU General Public License as published by
   6 * the Free Software Foundation; either version 2 of the License, or
   7 * (at your option) any later version.
   8 *
   9 * This program is distributed in the hope that it will be useful,
  10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 * GNU General Public License for more details.
  13 *
  14 * You should have received a copy of the GNU General Public License
  15 * along with this program; if not, write to the Free Software
  16 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  17 */
  18
  19#ifndef __VLYNQ_H__
  20#define __VLYNQ_H__
  21
  22#include <linux/device.h>
  23#include <linux/types.h>
  24
  25struct module;
  26
  27#define VLYNQ_NUM_IRQS 32
  28
  29struct vlynq_mapping {
  30        u32 size;
  31        u32 offset;
  32};
  33
  34enum vlynq_divisor {
  35        vlynq_div_auto = 0,
  36        vlynq_ldiv1,
  37        vlynq_ldiv2,
  38        vlynq_ldiv3,
  39        vlynq_ldiv4,
  40        vlynq_ldiv5,
  41        vlynq_ldiv6,
  42        vlynq_ldiv7,
  43        vlynq_ldiv8,
  44        vlynq_rdiv1,
  45        vlynq_rdiv2,
  46        vlynq_rdiv3,
  47        vlynq_rdiv4,
  48        vlynq_rdiv5,
  49        vlynq_rdiv6,
  50        vlynq_rdiv7,
  51        vlynq_rdiv8,
  52        vlynq_div_external
  53};
  54
  55struct vlynq_device_id {
  56        u32 id;
  57        enum vlynq_divisor divisor;
  58        unsigned long driver_data;
  59};
  60
  61struct vlynq_regs;
  62struct vlynq_device {
  63        u32 id, dev_id;
  64        int local_irq;
  65        int remote_irq;
  66        enum vlynq_divisor divisor;
  67        u32 regs_start, regs_end;
  68        u32 mem_start, mem_end;
  69        u32 irq_start, irq_end;
  70        int irq;
  71        int enabled;
  72        struct vlynq_regs *local;
  73        struct vlynq_regs *remote;
  74        struct device dev;
  75};
  76
  77struct vlynq_driver {
  78        char *name;
  79        struct vlynq_device_id *id_table;
  80        int (*probe)(struct vlynq_device *dev, struct vlynq_device_id *id);
  81        void (*remove)(struct vlynq_device *dev);
  82        struct device_driver driver;
  83};
  84
  85struct plat_vlynq_ops {
  86        int (*on)(struct vlynq_device *dev);
  87        void (*off)(struct vlynq_device *dev);
  88};
  89
  90static inline struct vlynq_driver *to_vlynq_driver(struct device_driver *drv)
  91{
  92        return container_of(drv, struct vlynq_driver, driver);
  93}
  94
  95static inline struct vlynq_device *to_vlynq_device(struct device *device)
  96{
  97        return container_of(device, struct vlynq_device, dev);
  98}
  99
 100extern struct bus_type vlynq_bus_type;
 101
 102extern int __vlynq_register_driver(struct vlynq_driver *driver,
 103                                   struct module *owner);
 104
 105static inline int vlynq_register_driver(struct vlynq_driver *driver)
 106{
 107        return __vlynq_register_driver(driver, THIS_MODULE);
 108}
 109
 110static inline void *vlynq_get_drvdata(struct vlynq_device *dev)
 111{
 112        return dev_get_drvdata(&dev->dev);
 113}
 114
 115static inline void vlynq_set_drvdata(struct vlynq_device *dev, void *data)
 116{
 117        dev_set_drvdata(&dev->dev, data);
 118}
 119
 120static inline u32 vlynq_mem_start(struct vlynq_device *dev)
 121{
 122        return dev->mem_start;
 123}
 124
 125static inline u32 vlynq_mem_end(struct vlynq_device *dev)
 126{
 127        return dev->mem_end;
 128}
 129
 130static inline u32 vlynq_mem_len(struct vlynq_device *dev)
 131{
 132        return dev->mem_end - dev->mem_start + 1;
 133}
 134
 135static inline int vlynq_virq_to_irq(struct vlynq_device *dev, int virq)
 136{
 137        int irq = dev->irq_start + virq;
 138        if ((irq < dev->irq_start) || (irq > dev->irq_end))
 139                return -EINVAL;
 140
 141        return irq;
 142}
 143
 144static inline int vlynq_irq_to_virq(struct vlynq_device *dev, int irq)
 145{
 146        if ((irq < dev->irq_start) || (irq > dev->irq_end))
 147                return -EINVAL;
 148
 149        return irq - dev->irq_start;
 150}
 151
 152extern void vlynq_unregister_driver(struct vlynq_driver *driver);
 153extern int vlynq_enable_device(struct vlynq_device *dev);
 154extern void vlynq_disable_device(struct vlynq_device *dev);
 155extern int vlynq_set_local_mapping(struct vlynq_device *dev, u32 tx_offset,
 156                                   struct vlynq_mapping *mapping);
 157extern int vlynq_set_remote_mapping(struct vlynq_device *dev, u32 tx_offset,
 158                                    struct vlynq_mapping *mapping);
 159extern int vlynq_set_local_irq(struct vlynq_device *dev, int virq);
 160extern int vlynq_set_remote_irq(struct vlynq_device *dev, int virq);
 161
 162#endif /* __VLYNQ_H__ */
 163
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