mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-26 22:24:09 +08:00
9247135397
Signed-off-by: Richard Zhao <richard.zhao@freescale.com> Reviewed-by: Ying-Chun Liu (PaulLiu) <paulliu@debian.org> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
125 lines
3.5 KiB
C
125 lines
3.5 KiB
C
/*
|
|
* Anatop MFD driver
|
|
*
|
|
* Copyright (C) 2012 Ying-Chun Liu (PaulLiu) <paul.liu@linaro.org>
|
|
* Copyright (C) 2012 Linaro
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License along
|
|
* with this program; if not, write to the Free Software Foundation, Inc.,
|
|
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License along
|
|
* with this program; if not, write to the Free Software Foundation, Inc.,
|
|
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
|
|
*
|
|
*/
|
|
|
|
#include <linux/io.h>
|
|
#include <linux/module.h>
|
|
#include <linux/platform_device.h>
|
|
#include <linux/of.h>
|
|
#include <linux/of_platform.h>
|
|
#include <linux/of_address.h>
|
|
#include <linux/mfd/anatop.h>
|
|
|
|
u32 anatop_read_reg(struct anatop *adata, u32 addr)
|
|
{
|
|
return readl(adata->ioreg + addr);
|
|
}
|
|
EXPORT_SYMBOL_GPL(anatop_read_reg);
|
|
|
|
void anatop_write_reg(struct anatop *adata, u32 addr, u32 data, u32 mask)
|
|
{
|
|
u32 val;
|
|
|
|
data &= mask;
|
|
|
|
spin_lock(&adata->reglock);
|
|
val = readl(adata->ioreg + addr);
|
|
val &= ~mask;
|
|
val |= data;
|
|
writel(val, adata->ioreg + addr);
|
|
spin_unlock(&adata->reglock);
|
|
}
|
|
EXPORT_SYMBOL_GPL(anatop_write_reg);
|
|
|
|
static const struct of_device_id of_anatop_match[] = {
|
|
{ .compatible = "fsl,imx6q-anatop", },
|
|
{ },
|
|
};
|
|
|
|
static int __devinit of_anatop_probe(struct platform_device *pdev)
|
|
{
|
|
struct device *dev = &pdev->dev;
|
|
struct device_node *np = dev->of_node;
|
|
void *ioreg;
|
|
struct anatop *drvdata;
|
|
|
|
ioreg = of_iomap(np, 0);
|
|
if (!ioreg)
|
|
return -EADDRNOTAVAIL;
|
|
drvdata = devm_kzalloc(dev, sizeof(*drvdata), GFP_KERNEL);
|
|
if (!drvdata)
|
|
return -ENOMEM;
|
|
drvdata->ioreg = ioreg;
|
|
spin_lock_init(&drvdata->reglock);
|
|
platform_set_drvdata(pdev, drvdata);
|
|
of_platform_populate(np, NULL, NULL, dev);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int __devexit of_anatop_remove(struct platform_device *pdev)
|
|
{
|
|
struct anatop *drvdata;
|
|
drvdata = platform_get_drvdata(pdev);
|
|
iounmap(drvdata->ioreg);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct platform_driver anatop_of_driver = {
|
|
.driver = {
|
|
.name = "anatop-mfd",
|
|
.owner = THIS_MODULE,
|
|
.of_match_table = of_anatop_match,
|
|
},
|
|
.probe = of_anatop_probe,
|
|
.remove = of_anatop_remove,
|
|
};
|
|
|
|
static int __init anatop_init(void)
|
|
{
|
|
return platform_driver_register(&anatop_of_driver);
|
|
}
|
|
postcore_initcall(anatop_init);
|
|
|
|
static void __exit anatop_exit(void)
|
|
{
|
|
platform_driver_unregister(&anatop_of_driver);
|
|
}
|
|
module_exit(anatop_exit);
|
|
|
|
MODULE_AUTHOR("Ying-Chun Liu (PaulLiu) <paul.liu@linaro.org>");
|
|
MODULE_DESCRIPTION("ANATOP MFD driver");
|
|
MODULE_LICENSE("GPL v2");
|