mirror of https://gitee.com/openkylin/linux.git
151 lines
3.9 KiB
C
151 lines
3.9 KiB
C
/*
|
|
* Regulator driver for tps65090 power management chip.
|
|
*
|
|
* Copyright (c) 2012, NVIDIA CORPORATION. All rights reserved.
|
|
|
|
* This program is free software; you can redistribute it and/or modify it
|
|
* under the terms and conditions of the GNU General Public License,
|
|
* version 2, as published by the Free Software Foundation.
|
|
|
|
* This program is distributed in the hope 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, see <http://www.gnu.org/licenses/>
|
|
*/
|
|
|
|
#include <linux/module.h>
|
|
#include <linux/init.h>
|
|
#include <linux/slab.h>
|
|
#include <linux/err.h>
|
|
#include <linux/platform_device.h>
|
|
#include <linux/regulator/driver.h>
|
|
#include <linux/regulator/machine.h>
|
|
#include <linux/mfd/tps65090.h>
|
|
#include <linux/regulator/tps65090-regulator.h>
|
|
|
|
struct tps65090_regulator {
|
|
int id;
|
|
/* used by regulator core */
|
|
struct regulator_desc desc;
|
|
|
|
/* Device */
|
|
struct device *dev;
|
|
};
|
|
|
|
static struct regulator_ops tps65090_ops = {
|
|
.enable = regulator_enable_regmap,
|
|
.disable = regulator_disable_regmap,
|
|
.is_enabled = regulator_is_enabled_regmap,
|
|
};
|
|
|
|
#define tps65090_REG(_id) \
|
|
{ \
|
|
.id = TPS65090_ID_##_id, \
|
|
.desc = { \
|
|
.name = tps65090_rails(_id), \
|
|
.id = TPS65090_ID_##_id, \
|
|
.ops = &tps65090_ops, \
|
|
.type = REGULATOR_VOLTAGE, \
|
|
.owner = THIS_MODULE, \
|
|
.enable_reg = (TPS65090_ID_##_id) + 12, \
|
|
.enable_mask = BIT(0), \
|
|
}, \
|
|
}
|
|
|
|
static struct tps65090_regulator TPS65090_regulator[] = {
|
|
tps65090_REG(DCDC1),
|
|
tps65090_REG(DCDC2),
|
|
tps65090_REG(DCDC3),
|
|
tps65090_REG(FET1),
|
|
tps65090_REG(FET2),
|
|
tps65090_REG(FET3),
|
|
tps65090_REG(FET4),
|
|
tps65090_REG(FET5),
|
|
tps65090_REG(FET6),
|
|
tps65090_REG(FET7),
|
|
};
|
|
|
|
static inline struct tps65090_regulator *find_regulator_info(int id)
|
|
{
|
|
struct tps65090_regulator *ri;
|
|
int i;
|
|
|
|
for (i = 0; i < ARRAY_SIZE(TPS65090_regulator); i++) {
|
|
ri = &TPS65090_regulator[i];
|
|
if (ri->desc.id == id)
|
|
return ri;
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
static int __devinit tps65090_regulator_probe(struct platform_device *pdev)
|
|
{
|
|
struct tps65090 *tps65090_mfd = dev_get_drvdata(pdev->dev.parent);
|
|
struct tps65090_regulator *ri = NULL;
|
|
struct regulator_config config = { };
|
|
struct regulator_dev *rdev;
|
|
struct tps65090_regulator_platform_data *tps_pdata;
|
|
int id = pdev->id;
|
|
|
|
dev_dbg(&pdev->dev, "Probing regulator %d\n", id);
|
|
|
|
ri = find_regulator_info(id);
|
|
if (ri == NULL) {
|
|
dev_err(&pdev->dev, "invalid regulator ID specified\n");
|
|
return -EINVAL;
|
|
}
|
|
tps_pdata = pdev->dev.platform_data;
|
|
ri->dev = &pdev->dev;
|
|
|
|
config.dev = &pdev->dev;
|
|
config.init_data = &tps_pdata->regulator;
|
|
config.driver_data = ri;
|
|
config.regmap = tps65090_mfd->rmap;
|
|
|
|
rdev = regulator_register(&ri->desc, &config);
|
|
if (IS_ERR(rdev)) {
|
|
dev_err(&pdev->dev, "failed to register regulator %s\n",
|
|
ri->desc.name);
|
|
return PTR_ERR(rdev);
|
|
}
|
|
|
|
platform_set_drvdata(pdev, rdev);
|
|
return 0;
|
|
}
|
|
|
|
static int __devexit tps65090_regulator_remove(struct platform_device *pdev)
|
|
{
|
|
struct regulator_dev *rdev = platform_get_drvdata(pdev);
|
|
|
|
regulator_unregister(rdev);
|
|
return 0;
|
|
}
|
|
|
|
static struct platform_driver tps65090_regulator_driver = {
|
|
.driver = {
|
|
.name = "tps65090-regulator",
|
|
.owner = THIS_MODULE,
|
|
},
|
|
.probe = tps65090_regulator_probe,
|
|
.remove = __devexit_p(tps65090_regulator_remove),
|
|
};
|
|
|
|
static int __init tps65090_regulator_init(void)
|
|
{
|
|
return platform_driver_register(&tps65090_regulator_driver);
|
|
}
|
|
subsys_initcall(tps65090_regulator_init);
|
|
|
|
static void __exit tps65090_regulator_exit(void)
|
|
{
|
|
platform_driver_unregister(&tps65090_regulator_driver);
|
|
}
|
|
module_exit(tps65090_regulator_exit);
|
|
|
|
MODULE_DESCRIPTION("tps65090 regulator driver");
|
|
MODULE_AUTHOR("Venu Byravarasu <vbyravarasu@nvidia.com>");
|
|
MODULE_LICENSE("GPL v2");
|