mirror of
https://github.com/torvalds/linux.git
synced 2024-11-23 04:31:50 +00:00
af873fcece
Based on 1 normalized pattern(s): license terms gnu general public license gpl version 2 extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 161 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Alexios Zavras <alexios.zavras@intel.com> Reviewed-by: Steve Winslow <swinslow@gmail.com> Reviewed-by: Richard Fontana <rfontana@redhat.com> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190528170027.447718015@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
151 lines
3.5 KiB
C
151 lines
3.5 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
|
|
/*
|
|
* Copyright (C) 2007-2010 ST-Ericsson
|
|
* 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/init.h>
|
|
#include <linux/export.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(*dev_entry), GFP_KERNEL);
|
|
if (!dev_entry)
|
|
return -ENOMEM;
|
|
|
|
dev_entry->dev = dev;
|
|
memcpy(&dev_entry->ops, ops, sizeof(*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 && ops->set_register)
|
|
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 && ops->get_register)
|
|
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 && ops->get_register_page)
|
|
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 && ops->mask_and_set_register)
|
|
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 && ops->get_chip_id)
|
|
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 && ops->event_registers_startup_state_get)
|
|
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 && ops->startup_irq_enabled)
|
|
return ops->startup_irq_enabled(dev, irq);
|
|
else
|
|
return -ENOTSUPP;
|
|
}
|
|
EXPORT_SYMBOL(abx500_startup_irq_enabled);
|