include/linux/vlynq.h

   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/module.h>
  24 #include <linux/types.h>
  25
  26 #define VLYNQ_NUM_IRQS 32
  27
  28 struct vlynq_mapping {
  29         u32 size;
  30         u32 offset;
  31 };
  32
  33 enum vlynq_divisor {
  34         vlynq_div_auto = 0,
  35         vlynq_ldiv1,
  36         vlynq_ldiv2,
  37         vlynq_ldiv3,
  38         vlynq_ldiv4,
  39         vlynq_ldiv5,
  40         vlynq_ldiv6,
  41         vlynq_ldiv7,
  42         vlynq_ldiv8,
  43         vlynq_rdiv1,
  44         vlynq_rdiv2,
  45         vlynq_rdiv3,
  46         vlynq_rdiv4,
  47         vlynq_rdiv5,
  48         vlynq_rdiv6,
  49         vlynq_rdiv7,
  50         vlynq_rdiv8,
  51         vlynq_div_external
  52 };
  53
  54 struct vlynq_device_id {
  55         u32 id;
  56         enum vlynq_divisor divisor;
  57         unsigned long driver_data;
  58 };
  59
  60 struct vlynq_regs;
  61 struct vlynq_device {
  62         u32 id, dev_id;
  63         int local_irq;
  64         int remote_irq;
  65         enum vlynq_divisor divisor;
  66         u32 regs_start, regs_end;
  67         u32 mem_start, mem_end;
  68         u32 irq_start, irq_end;
  69         int irq;
  70         int enabled;
  71         struct vlynq_regs *local;
  72         struct vlynq_regs *remote;
  73         struct device dev;
  74 };
  75
  76 struct vlynq_driver {
  77         char *name;
  78         struct vlynq_device_id *id_table;
  79         int (*probe)(struct vlynq_device *dev, struct vlynq_device_id *id);
  80         void (*remove)(struct vlynq_device *dev);
  81         struct device_driver driver;
  82 };
  83
  84 struct plat_vlynq_ops {
  85         int (*on)(struct vlynq_device *dev);
  86         void (*off)(struct vlynq_device *dev);
  87 };
  88
  89 static inline struct vlynq_driver *to_vlynq_driver(struct device_driver *drv)
  90 {
  91         return container_of(drv, struct vlynq_driver, driver);
  92 }
  93
  94 static inline struct vlynq_device *to_vlynq_device(struct device *device)
  95 {
  96         return container_of(device, struct vlynq_device, dev);
  97 }
  98
  99 extern struct bus_type vlynq_bus_type;
 100
 101 extern int __vlynq_register_driver(struct vlynq_driver *driver,
 102                                    struct module *owner);
 103
 104 static inline int vlynq_register_driver(struct vlynq_driver *driver)
 105 {
 106         return __vlynq_register_driver(driver, THIS_MODULE);
 107 }
 108
 109 static inline void *vlynq_get_drvdata(struct vlynq_device *dev)
 110 {
 111         return dev_get_drvdata(&dev->dev);
 112 }
 113
 114 static inline void vlynq_set_drvdata(struct vlynq_device *dev, void *data)
 115 {
 116         dev_set_drvdata(&dev->dev, data);
 117 }
 118
 119 static inline u32 vlynq_mem_start(struct vlynq_device *dev)
 120 {
 121         return dev->mem_start;
 122 }
 123
 124 static inline u32 vlynq_mem_end(struct vlynq_device *dev)
 125 {
 126         return dev->mem_end;
 127 }
 128
 129 static inline u32 vlynq_mem_len(struct vlynq_device *dev)
 130 {
 131         return dev->mem_end - dev->mem_start + 1;
 132 }
 133
 134 static inline int vlynq_virq_to_irq(struct vlynq_device *dev, int virq)
 135 {
 136         int irq = dev->irq_start + virq;
 137         if ((irq < dev->irq_start) || (irq > dev->irq_end))
 138                 return -EINVAL;
 139
 140         return irq;
 141 }
 142
 143 static inline int vlynq_irq_to_virq(struct vlynq_device *dev, int irq)
 144 {
 145         if ((irq < dev->irq_start) || (irq > dev->irq_end))
 146                 return -EINVAL;
 147
 148         return irq - dev->irq_start;
 149 }
 150
 151 extern void vlynq_unregister_driver(struct vlynq_driver *driver);
 152 extern int vlynq_enable_device(struct vlynq_device *dev);
 153 extern void vlynq_disable_device(struct vlynq_device *dev);
 154 extern int vlynq_set_local_mapping(struct vlynq_device *dev, u32 tx_offset,
 155                                    struct vlynq_mapping *mapping);
 156 extern int vlynq_set_remote_mapping(struct vlynq_device *dev, u32 tx_offset,
 157                                     struct vlynq_mapping *mapping);
 158 extern int vlynq_set_local_irq(struct vlynq_device *dev, int virq);
 159 extern int vlynq_set_remote_irq(struct vlynq_device *dev, int virq);
 160
 161 #endif /* __VLYNQ_H__ */