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/*
* Copyright (C) 2011 Freescale Semiconductor, Inc. All Rights Reserved.
*/
/*
* 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/slab.h>
#include <linux/device.h>
#include <linux/module.h>
#include <linux/err.h>
#include <linux/platform_device.h>
#include <linux/regulator/machine.h>
#include <linux/regulator/driver.h>
#include <linux/regulator/anatop-regulator.h>
static int anatop_set_voltage(struct regulator_dev *reg, int min_uV,
int max_uV, unsigned *selector)
{
struct anatop_regulator *anatop_reg = rdev_get_drvdata(reg);
if (anatop_reg->rdata->set_voltage)
return anatop_reg->rdata->set_voltage(anatop_reg, max_uV);
else
return -ENOTSUPP;
}
static int anatop_get_voltage(struct regulator_dev *reg)
{
struct anatop_regulator *anatop_reg = rdev_get_drvdata(reg);
if (anatop_reg->rdata->get_voltage)
return anatop_reg->rdata->get_voltage(anatop_reg);
else
return -ENOTSUPP;
}
static int anatop_enable(struct regulator_dev *reg)
{
struct anatop_regulator *anatop_reg = rdev_get_drvdata(reg);
return anatop_reg->rdata->enable(anatop_reg);
}
static int anatop_disable(struct regulator_dev *reg)
{
struct anatop_regulator *anatop_reg = rdev_get_drvdata(reg);
return anatop_reg->rdata->disable(anatop_reg);
}
static int anatop_is_enabled(struct regulator_dev *reg)
{
struct anatop_regulator *anatop_reg = rdev_get_drvdata(reg);
return anatop_reg->rdata->is_enabled(anatop_reg);
}
static struct regulator_ops anatop_rops = {
.set_voltage = anatop_set_voltage,
.get_voltage = anatop_get_voltage,
.enable = anatop_enable,
.disable = anatop_disable,
.is_enabled = anatop_is_enabled,
};
static struct regulator_desc anatop_reg_desc[] = {
{
.name = "vddpu",
.id = ANATOP_VDDPU,
.ops = &anatop_rops,
.irq = 0,
.type = REGULATOR_VOLTAGE,
.owner = THIS_MODULE
},
{
.name = "vddcore",
.id = ANATOP_VDDCORE,
.ops = &anatop_rops,
.irq = 0,
.type = REGULATOR_VOLTAGE,
.owner = THIS_MODULE
},
{
.name = "vddsoc",
.id = ANATOP_VDDSOC,
.ops = &anatop_rops,
.irq = 0,
.type = REGULATOR_VOLTAGE,
.owner = THIS_MODULE
},
{
.name = "vdd2p5",
.id = ANATOP_VDD2P5,
.ops = &anatop_rops,
.irq = 0,
.type = REGULATOR_VOLTAGE,
.owner = THIS_MODULE
},
{
.name = "vdd1p1",
.id = ANATOP_VDD1P1,
.ops = &anatop_rops,
.irq = 0,
.type = REGULATOR_VOLTAGE,
.owner = THIS_MODULE
},
{
.name = "vdd3p0",
.id = ANATOP_VDD3P0,
.ops = &anatop_rops,
.irq = 0,
.type = REGULATOR_VOLTAGE,
.owner = THIS_MODULE
},
};
int anatop_regulator_probe(struct platform_device *pdev)
{
struct regulator_desc *rdesc;
struct regulator_dev *rdev;
struct anatop_regulator *sreg;
struct regulator_init_data *initdata;
sreg = platform_get_drvdata(pdev);
initdata = pdev->dev.platform_data;
sreg->cur_current = 0;
sreg->next_current = 0;
sreg->cur_voltage = 0;
init_waitqueue_head(&sreg->wait_q);
spin_lock_init(&sreg->lock);
if (pdev->id > ANATOP_SUPPLY_NUM) {
rdesc = kzalloc(sizeof(struct regulator_desc), GFP_KERNEL);
memcpy(rdesc, &anatop_reg_desc[ANATOP_SUPPLY_NUM],
sizeof(struct regulator_desc));
rdesc->name = kstrdup(sreg->rdata->name, GFP_KERNEL);
} else
rdesc = &anatop_reg_desc[pdev->id];
pr_debug("probing regulator %s %s %d\n",
sreg->rdata->name,
rdesc->name,
pdev->id);
/* register regulator */
rdev = regulator_register(rdesc, &pdev->dev,
initdata, sreg);
if (IS_ERR(rdev)) {
dev_err(&pdev->dev, "failed to register %s\n",
rdesc->name);
return PTR_ERR(rdev);
}
return 0;
}
int anatop_regulator_remove(struct platform_device *pdev)
{
struct regulator_dev *rdev = platform_get_drvdata(pdev);
regulator_unregister(rdev);
return 0;
}
int anatop_register_regulator(
struct anatop_regulator *reg_data, int reg,
struct regulator_init_data *initdata)
{
struct platform_device *pdev;
int ret;
pdev = platform_device_alloc("anatop_reg", reg);
if (!pdev)
return -ENOMEM;
pdev->dev.platform_data = initdata;
platform_set_drvdata(pdev, reg_data);
ret = platform_device_add(pdev);
if (ret != 0) {
pr_debug("Failed to register regulator %d: %d\n",
reg, ret);
platform_device_del(pdev);
}
pr_debug("register regulator %s, %d: %d\n",
reg_data->rdata->name, reg, ret);
return ret;
}
EXPORT_SYMBOL_GPL(anatop_register_regulator);
struct platform_driver anatop_reg = {
.driver = {
.name = "anatop_reg",
},
.probe = anatop_regulator_probe,
.remove = anatop_regulator_remove,
};
int anatop_regulator_init(void)
{
return platform_driver_register(&anatop_reg);
}
void anatop_regulator_exit(void)
{
platform_driver_unregister(&anatop_reg);
}
postcore_initcall(anatop_regulator_init);
module_exit(anatop_regulator_exit);
MODULE_AUTHOR("Freescale Semiconductor, Inc.");
MODULE_DESCRIPTION("ANATOP Regulator driver");
MODULE_LICENSE("GPL");
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