linux/drivers/mfd/ab8500-sysctrl.c
Bill Pemberton 4740f73fe5 mfd: remove use of __devexit
CONFIG_HOTPLUG is going away as an option so __devexit is no
longer needed.

Signed-off-by: Bill Pemberton <wfp5p@virginia.edu>
Cc: Srinidhi Kasagar <srinidhi.kasagar@stericsson.com>
Cc: Peter Tyser <ptyser@xes-inc.com>
Cc: Daniel Walker <dwalker@fifo99.com>
Cc: Bryan Huntsman <bryanh@codeaurora.org>
Acked-by: David Brown <davidb@codeaurora.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-11-28 12:22:27 -08:00

82 lines
1.7 KiB
C

/*
* Copyright (C) ST-Ericsson SA 2010
* Author: Mattias Nilsson <mattias.i.nilsson@stericsson.com> for ST Ericsson.
* License terms: GNU General Public License (GPL) version 2
*/
#include <linux/err.h>
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/mfd/abx500.h>
#include <linux/mfd/abx500/ab8500.h>
#include <linux/mfd/abx500/ab8500-sysctrl.h>
static struct device *sysctrl_dev;
static inline bool valid_bank(u8 bank)
{
return ((bank == AB8500_SYS_CTRL1_BLOCK) ||
(bank == AB8500_SYS_CTRL2_BLOCK));
}
int ab8500_sysctrl_read(u16 reg, u8 *value)
{
u8 bank;
if (sysctrl_dev == NULL)
return -EAGAIN;
bank = (reg >> 8);
if (!valid_bank(bank))
return -EINVAL;
return abx500_get_register_interruptible(sysctrl_dev, bank,
(u8)(reg & 0xFF), value);
}
int ab8500_sysctrl_write(u16 reg, u8 mask, u8 value)
{
u8 bank;
if (sysctrl_dev == NULL)
return -EAGAIN;
bank = (reg >> 8);
if (!valid_bank(bank))
return -EINVAL;
return abx500_mask_and_set_register_interruptible(sysctrl_dev, bank,
(u8)(reg & 0xFF), mask, value);
}
static int ab8500_sysctrl_probe(struct platform_device *pdev)
{
sysctrl_dev = &pdev->dev;
return 0;
}
static int ab8500_sysctrl_remove(struct platform_device *pdev)
{
sysctrl_dev = NULL;
return 0;
}
static struct platform_driver ab8500_sysctrl_driver = {
.driver = {
.name = "ab8500-sysctrl",
.owner = THIS_MODULE,
},
.probe = ab8500_sysctrl_probe,
.remove = ab8500_sysctrl_remove,
};
static int __init ab8500_sysctrl_init(void)
{
return platform_driver_register(&ab8500_sysctrl_driver);
}
subsys_initcall(ab8500_sysctrl_init);
MODULE_AUTHOR("Mattias Nilsson <mattias.i.nilsson@stericsson.com");
MODULE_DESCRIPTION("AB8500 system control driver");
MODULE_LICENSE("GPL v2");