jbd: Issue cache flush after checkpointing
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / mfd / abx500-core.c
blob7ce65f49480f1bfb4b68d7c693a27451e797e27b
1 /*
2 * Copyright (C) 2007-2010 ST-Ericsson
3 * License terms: GNU General Public License (GPL) version 2
4 * Register access functions for the ABX500 Mixed Signal IC family.
5 * Author: Mattias Wallin <mattias.wallin@stericsson.com>
6 */
8 #include <linux/list.h>
9 #include <linux/slab.h>
10 #include <linux/err.h>
11 #include <linux/module.h>
12 #include <linux/mfd/abx500.h>
14 static LIST_HEAD(abx500_list);
16 struct abx500_device_entry {
17 struct list_head list;
18 struct abx500_ops ops;
19 struct device *dev;
22 static void lookup_ops(struct device *dev, struct abx500_ops **ops)
24 struct abx500_device_entry *dev_entry;
26 *ops = NULL;
27 list_for_each_entry(dev_entry, &abx500_list, list) {
28 if (dev_entry->dev == dev) {
29 *ops = &dev_entry->ops;
30 return;
35 int abx500_register_ops(struct device *dev, struct abx500_ops *ops)
37 struct abx500_device_entry *dev_entry;
39 dev_entry = kzalloc(sizeof(struct abx500_device_entry), GFP_KERNEL);
40 if (!dev_entry) {
41 dev_err(dev, "register_ops kzalloc failed");
42 return -ENOMEM;
44 dev_entry->dev = dev;
45 memcpy(&dev_entry->ops, ops, sizeof(struct abx500_ops));
47 list_add_tail(&dev_entry->list, &abx500_list);
48 return 0;
50 EXPORT_SYMBOL(abx500_register_ops);
52 void abx500_remove_ops(struct device *dev)
54 struct abx500_device_entry *dev_entry, *tmp;
56 list_for_each_entry_safe(dev_entry, tmp, &abx500_list, list)
58 if (dev_entry->dev == dev) {
59 list_del(&dev_entry->list);
60 kfree(dev_entry);
64 EXPORT_SYMBOL(abx500_remove_ops);
66 int abx500_set_register_interruptible(struct device *dev, u8 bank, u8 reg,
67 u8 value)
69 struct abx500_ops *ops;
71 lookup_ops(dev->parent, &ops);
72 if ((ops != NULL) && (ops->set_register != NULL))
73 return ops->set_register(dev, bank, reg, value);
74 else
75 return -ENOTSUPP;
77 EXPORT_SYMBOL(abx500_set_register_interruptible);
79 int abx500_get_register_interruptible(struct device *dev, u8 bank, u8 reg,
80 u8 *value)
82 struct abx500_ops *ops;
84 lookup_ops(dev->parent, &ops);
85 if ((ops != NULL) && (ops->get_register != NULL))
86 return ops->get_register(dev, bank, reg, value);
87 else
88 return -ENOTSUPP;
90 EXPORT_SYMBOL(abx500_get_register_interruptible);
92 int abx500_get_register_page_interruptible(struct device *dev, u8 bank,
93 u8 first_reg, u8 *regvals, u8 numregs)
95 struct abx500_ops *ops;
97 lookup_ops(dev->parent, &ops);
98 if ((ops != NULL) && (ops->get_register_page != NULL))
99 return ops->get_register_page(dev, bank,
100 first_reg, regvals, numregs);
101 else
102 return -ENOTSUPP;
104 EXPORT_SYMBOL(abx500_get_register_page_interruptible);
106 int abx500_mask_and_set_register_interruptible(struct device *dev, u8 bank,
107 u8 reg, u8 bitmask, u8 bitvalues)
109 struct abx500_ops *ops;
111 lookup_ops(dev->parent, &ops);
112 if ((ops != NULL) && (ops->mask_and_set_register != NULL))
113 return ops->mask_and_set_register(dev, bank,
114 reg, bitmask, bitvalues);
115 else
116 return -ENOTSUPP;
118 EXPORT_SYMBOL(abx500_mask_and_set_register_interruptible);
120 int abx500_get_chip_id(struct device *dev)
122 struct abx500_ops *ops;
124 lookup_ops(dev->parent, &ops);
125 if ((ops != NULL) && (ops->get_chip_id != NULL))
126 return ops->get_chip_id(dev);
127 else
128 return -ENOTSUPP;
130 EXPORT_SYMBOL(abx500_get_chip_id);
132 int abx500_event_registers_startup_state_get(struct device *dev, u8 *event)
134 struct abx500_ops *ops;
136 lookup_ops(dev->parent, &ops);
137 if ((ops != NULL) && (ops->event_registers_startup_state_get != NULL))
138 return ops->event_registers_startup_state_get(dev, event);
139 else
140 return -ENOTSUPP;
142 EXPORT_SYMBOL(abx500_event_registers_startup_state_get);
144 int abx500_startup_irq_enabled(struct device *dev, unsigned int irq)
146 struct abx500_ops *ops;
148 lookup_ops(dev->parent, &ops);
149 if ((ops != NULL) && (ops->startup_irq_enabled != NULL))
150 return ops->startup_irq_enabled(dev, irq);
151 else
152 return -ENOTSUPP;
154 EXPORT_SYMBOL(abx500_startup_irq_enabled);
156 MODULE_AUTHOR("Mattias Wallin <mattias.wallin@stericsson.com>");
157 MODULE_DESCRIPTION("ABX500 core driver");
158 MODULE_LICENSE("GPL");