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/types.h>
  24
  25 struct module;
  26
  27 #define VLYNQ_NUM_IRQS 32
  28
  29 struct vlynq_mapping {
  30         u32 size;
  31         u32 offset;
  32 };
  33
  34 enum 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
  55 struct vlynq_device_id {
  56         u32 id;
  57         enum vlynq_divisor divisor;
  58         unsigned long driver_data;
  59 };
  60
  61 struct vlynq_regs;
  62 struct 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
  77 struct 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
  85 struct plat_vlynq_ops {
  86         int (*on)(struct vlynq_device *dev);
  87         void (*off)(struct vlynq_device *dev);
  88 };
  89
  90 static inline struct vlynq_driver *to_vlynq_driver(struct device_driver *drv)
  91 {
  92         return container_of(drv, struct vlynq_driver, driver);
  93 }
  94
  95 static inline struct vlynq_device *to_vlynq_device(struct device *device)
  96 {
  97         return container_of(device, struct vlynq_device, dev);
  98 }
  99
 100 extern struct bus_type vlynq_bus_type;
 101
 102 extern int __vlynq_register_driver(struct vlynq_driver *driver,
 103                                    struct module *owner);
 104
 105 static inline int vlynq_register_driver(struct vlynq_driver *driver)
 106 {
 107         return __vlynq_register_driver(driver, THIS_MODULE);
 108 }
 109
 110 static inline void *vlynq_get_drvdata(struct vlynq_device *dev)
 111 {
 112         return dev_get_drvdata(&dev->dev);
 113 }
 114
 115 static inline void vlynq_set_drvdata(struct vlynq_device *dev, void *data)
 116 {
 117         dev_set_drvdata(&dev->dev, data);
 118 }
 119
 120 static inline u32 vlynq_mem_start(struct vlynq_device *dev)
 121 {
 122         return dev->mem_start;
 123 }
 124
 125 static inline u32 vlynq_mem_end(struct vlynq_device *dev)
 126 {
 127         return dev->mem_end;
 128 }
 129
 130 static inline u32 vlynq_mem_len(struct vlynq_device *dev)
 131 {
 132         return dev->mem_end - dev->mem_start + 1;
 133 }
 134
 135 static 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
 144 static 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
 152 extern void vlynq_unregister_driver(struct vlynq_driver *driver);
 153 extern int vlynq_enable_device(struct vlynq_device *dev);
 154 extern void vlynq_disable_device(struct vlynq_device *dev);
 155 extern int vlynq_set_local_mapping(struct vlynq_device *dev, u32 tx_offset,
 156                                    struct vlynq_mapping *mapping);
 157 extern int vlynq_set_remote_mapping(struct vlynq_device *dev, u32 tx_offset,
 158                                     struct vlynq_mapping *mapping);
 159 extern int vlynq_set_local_irq(struct vlynq_device *dev, int virq);
 160 extern int vlynq_set_remote_irq(struct vlynq_device *dev, int virq);
 161
 162 #endif /* __VLYNQ_H__ */