mirror of https://gitee.com/openkylin/linux.git
157 lines
3.9 KiB
C
157 lines
3.9 KiB
C
/*
|
|
* Copyright (C) 2007-2010 ST-Ericsson
|
|
* License terms: GNU General Public License (GPL) version 2
|
|
* Register access functions for the ABX500 Mixed Signal IC family.
|
|
* Author: Mattias Wallin <mattias.wallin@stericsson.com>
|
|
*/
|
|
|
|
#include <linux/list.h>
|
|
#include <linux/slab.h>
|
|
#include <linux/err.h>
|
|
#include <linux/module.h>
|
|
#include <linux/mfd/abx500.h>
|
|
|
|
static LIST_HEAD(abx500_list);
|
|
|
|
struct abx500_device_entry {
|
|
struct list_head list;
|
|
struct abx500_ops ops;
|
|
struct device *dev;
|
|
};
|
|
|
|
static void lookup_ops(struct device *dev, struct abx500_ops **ops)
|
|
{
|
|
struct abx500_device_entry *dev_entry;
|
|
|
|
*ops = NULL;
|
|
list_for_each_entry(dev_entry, &abx500_list, list) {
|
|
if (dev_entry->dev == dev) {
|
|
*ops = &dev_entry->ops;
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
|
|
int abx500_register_ops(struct device *dev, struct abx500_ops *ops)
|
|
{
|
|
struct abx500_device_entry *dev_entry;
|
|
|
|
dev_entry = devm_kzalloc(dev,
|
|
sizeof(struct abx500_device_entry),
|
|
GFP_KERNEL);
|
|
if (!dev_entry) {
|
|
dev_err(dev, "register_ops kzalloc failed");
|
|
return -ENOMEM;
|
|
}
|
|
dev_entry->dev = dev;
|
|
memcpy(&dev_entry->ops, ops, sizeof(struct abx500_ops));
|
|
|
|
list_add_tail(&dev_entry->list, &abx500_list);
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL(abx500_register_ops);
|
|
|
|
void abx500_remove_ops(struct device *dev)
|
|
{
|
|
struct abx500_device_entry *dev_entry, *tmp;
|
|
|
|
list_for_each_entry_safe(dev_entry, tmp, &abx500_list, list)
|
|
if (dev_entry->dev == dev)
|
|
list_del(&dev_entry->list);
|
|
}
|
|
EXPORT_SYMBOL(abx500_remove_ops);
|
|
|
|
int abx500_set_register_interruptible(struct device *dev, u8 bank, u8 reg,
|
|
u8 value)
|
|
{
|
|
struct abx500_ops *ops;
|
|
|
|
lookup_ops(dev->parent, &ops);
|
|
if ((ops != NULL) && (ops->set_register != NULL))
|
|
return ops->set_register(dev, bank, reg, value);
|
|
else
|
|
return -ENOTSUPP;
|
|
}
|
|
EXPORT_SYMBOL(abx500_set_register_interruptible);
|
|
|
|
int abx500_get_register_interruptible(struct device *dev, u8 bank, u8 reg,
|
|
u8 *value)
|
|
{
|
|
struct abx500_ops *ops;
|
|
|
|
lookup_ops(dev->parent, &ops);
|
|
if ((ops != NULL) && (ops->get_register != NULL))
|
|
return ops->get_register(dev, bank, reg, value);
|
|
else
|
|
return -ENOTSUPP;
|
|
}
|
|
EXPORT_SYMBOL(abx500_get_register_interruptible);
|
|
|
|
int abx500_get_register_page_interruptible(struct device *dev, u8 bank,
|
|
u8 first_reg, u8 *regvals, u8 numregs)
|
|
{
|
|
struct abx500_ops *ops;
|
|
|
|
lookup_ops(dev->parent, &ops);
|
|
if ((ops != NULL) && (ops->get_register_page != NULL))
|
|
return ops->get_register_page(dev, bank,
|
|
first_reg, regvals, numregs);
|
|
else
|
|
return -ENOTSUPP;
|
|
}
|
|
EXPORT_SYMBOL(abx500_get_register_page_interruptible);
|
|
|
|
int abx500_mask_and_set_register_interruptible(struct device *dev, u8 bank,
|
|
u8 reg, u8 bitmask, u8 bitvalues)
|
|
{
|
|
struct abx500_ops *ops;
|
|
|
|
lookup_ops(dev->parent, &ops);
|
|
if ((ops != NULL) && (ops->mask_and_set_register != NULL))
|
|
return ops->mask_and_set_register(dev, bank,
|
|
reg, bitmask, bitvalues);
|
|
else
|
|
return -ENOTSUPP;
|
|
}
|
|
EXPORT_SYMBOL(abx500_mask_and_set_register_interruptible);
|
|
|
|
int abx500_get_chip_id(struct device *dev)
|
|
{
|
|
struct abx500_ops *ops;
|
|
|
|
lookup_ops(dev->parent, &ops);
|
|
if ((ops != NULL) && (ops->get_chip_id != NULL))
|
|
return ops->get_chip_id(dev);
|
|
else
|
|
return -ENOTSUPP;
|
|
}
|
|
EXPORT_SYMBOL(abx500_get_chip_id);
|
|
|
|
int abx500_event_registers_startup_state_get(struct device *dev, u8 *event)
|
|
{
|
|
struct abx500_ops *ops;
|
|
|
|
lookup_ops(dev->parent, &ops);
|
|
if ((ops != NULL) && (ops->event_registers_startup_state_get != NULL))
|
|
return ops->event_registers_startup_state_get(dev, event);
|
|
else
|
|
return -ENOTSUPP;
|
|
}
|
|
EXPORT_SYMBOL(abx500_event_registers_startup_state_get);
|
|
|
|
int abx500_startup_irq_enabled(struct device *dev, unsigned int irq)
|
|
{
|
|
struct abx500_ops *ops;
|
|
|
|
lookup_ops(dev->parent, &ops);
|
|
if ((ops != NULL) && (ops->startup_irq_enabled != NULL))
|
|
return ops->startup_irq_enabled(dev, irq);
|
|
else
|
|
return -ENOTSUPP;
|
|
}
|
|
EXPORT_SYMBOL(abx500_startup_irq_enabled);
|
|
|
|
MODULE_AUTHOR("Mattias Wallin <mattias.wallin@stericsson.com>");
|
|
MODULE_DESCRIPTION("ABX500 core driver");
|
|
MODULE_LICENSE("GPL");
|