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vlynq.h
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1 /*
2  * Copyright (C) 2006, 2007 Eugene Konev <[email protected]>
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__ */
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