include/linux/vlynq.h

   1 /* SPDX-License-Identifier: GPL-2.0-or-later */
   2 /*
   3  * Copyright (C) 2006, 2007 Eugene Konev <ejka@openwrt.org>
   4  */
   5
   6 #ifndef __VLYNQ_H__
   7 #define __VLYNQ_H__
   8
   9 #include <linux/device.h>
  10 #include <linux/types.h>
  11
  12 struct module;
  13
  14 #define VLYNQ_NUM_IRQS 32
  15
  16 struct vlynq_mapping {
  17         u32 size;
  18         u32 offset;
  19 };
  20
  21 enum vlynq_divisor {
  22         vlynq_div_auto = 0,
  23         vlynq_ldiv1,
  24         vlynq_ldiv2,
  25         vlynq_ldiv3,
  26         vlynq_ldiv4,
  27         vlynq_ldiv5,
  28         vlynq_ldiv6,
  29         vlynq_ldiv7,
  30         vlynq_ldiv8,
  31         vlynq_rdiv1,
  32         vlynq_rdiv2,
  33         vlynq_rdiv3,
  34         vlynq_rdiv4,
  35         vlynq_rdiv5,
  36         vlynq_rdiv6,
  37         vlynq_rdiv7,
  38         vlynq_rdiv8,
  39         vlynq_div_external
  40 };
  41
  42 struct vlynq_device_id {
  43         u32 id;
  44         enum vlynq_divisor divisor;
  45         unsigned long driver_data;
  46 };
  47
  48 struct vlynq_regs;
  49 struct vlynq_device {
  50         u32 id, dev_id;
  51         int local_irq;
  52         int remote_irq;
  53         enum vlynq_divisor divisor;
  54         u32 regs_start, regs_end;
  55         u32 mem_start, mem_end;
  56         u32 irq_start, irq_end;
  57         int irq;
  58         int enabled;
  59         struct vlynq_regs *local;
  60         struct vlynq_regs *remote;
  61         struct device dev;
  62 };
  63
  64 struct vlynq_driver {
  65         char *name;
  66         struct vlynq_device_id *id_table;
  67         int (*probe)(struct vlynq_device *dev, struct vlynq_device_id *id);
  68         void (*remove)(struct vlynq_device *dev);
  69         struct device_driver driver;
  70 };
  71
  72 struct plat_vlynq_ops {
  73         int (*on)(struct vlynq_device *dev);
  74         void (*off)(struct vlynq_device *dev);
  75 };
  76
  77 static inline struct vlynq_driver *to_vlynq_driver(struct device_driver *drv)
  78 {
  79         return container_of(drv, struct vlynq_driver, driver);
  80 }
  81
  82 static inline struct vlynq_device *to_vlynq_device(struct device *device)
  83 {
  84         return container_of(device, struct vlynq_device, dev);
  85 }
  86
  87 extern struct bus_type vlynq_bus_type;
  88
  89 extern int __vlynq_register_driver(struct vlynq_driver *driver,
  90                                    struct module *owner);
  91
  92 static inline int vlynq_register_driver(struct vlynq_driver *driver)
  93 {
  94         return __vlynq_register_driver(driver, THIS_MODULE);
  95 }
  96
  97 static inline void *vlynq_get_drvdata(struct vlynq_device *dev)
  98 {
  99         return dev_get_drvdata(&dev->dev);
 100 }
 101
 102 static inline void vlynq_set_drvdata(struct vlynq_device *dev, void *data)
 103 {
 104         dev_set_drvdata(&dev->dev, data);
 105 }
 106
 107 static inline u32 vlynq_mem_start(struct vlynq_device *dev)
 108 {
 109         return dev->mem_start;
 110 }
 111
 112 static inline u32 vlynq_mem_end(struct vlynq_device *dev)
 113 {
 114         return dev->mem_end;
 115 }
 116
 117 static inline u32 vlynq_mem_len(struct vlynq_device *dev)
 118 {
 119         return dev->mem_end - dev->mem_start + 1;
 120 }
 121
 122 static inline int vlynq_virq_to_irq(struct vlynq_device *dev, int virq)
 123 {
 124         int irq = dev->irq_start + virq;
 125         if ((irq < dev->irq_start) || (irq > dev->irq_end))
 126                 return -EINVAL;
 127
 128         return irq;
 129 }
 130
 131 static inline int vlynq_irq_to_virq(struct vlynq_device *dev, int irq)
 132 {
 133         if ((irq < dev->irq_start) || (irq > dev->irq_end))
 134                 return -EINVAL;
 135
 136         return irq - dev->irq_start;
 137 }
 138
 139 extern void vlynq_unregister_driver(struct vlynq_driver *driver);
 140 extern int vlynq_enable_device(struct vlynq_device *dev);
 141 extern void vlynq_disable_device(struct vlynq_device *dev);
 142 extern int vlynq_set_local_mapping(struct vlynq_device *dev, u32 tx_offset,
 143                                    struct vlynq_mapping *mapping);
 144 extern int vlynq_set_remote_mapping(struct vlynq_device *dev, u32 tx_offset,
 145                                     struct vlynq_mapping *mapping);
 146 extern int vlynq_set_local_irq(struct vlynq_device *dev, int virq);
 147 extern int vlynq_set_remote_irq(struct vlynq_device *dev, int virq);
 148
 149 #endif /* __VLYNQ_H__ */