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/*
* Copyright (C) 2015 Texas Instruments Incorporated - https://www.ti.com/
* Andrew F. Davis <afd@ti.com>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* This program is distributed "as is" WITHOUT ANY WARRANTY of any
* kind, whether expressed or implied; without even the implied warranty
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License version 2 for more details.
*
* Based on the TPS65912 driver
*/
#include <linux/i2c.h>
#include <linux/interrupt.h>
#include <linux/mfd/core.h>
#include <linux/module.h>
#include <linux/mfd/tps65086.h>
static const struct mfd_cell tps65086_cells[] = {
{ .name = "tps65086-regulator", },
{ .name = "tps65086-gpio", },
{ .name = "tps65086-reset", },
};
static const struct regmap_range tps65086_yes_ranges[] = {
regmap_reg_range(TPS65086_IRQ, TPS65086_IRQ),
regmap_reg_range(TPS65086_PMICSTAT, TPS65086_SHUTDNSRC),
regmap_reg_range(TPS65086_GPOCTRL, TPS65086_GPOCTRL),
regmap_reg_range(TPS65086_PG_STATUS1, TPS65086_OC_STATUS),
};
static const struct regmap_access_table tps65086_volatile_table = {
.yes_ranges = tps65086_yes_ranges,
.n_yes_ranges = ARRAY_SIZE(tps65086_yes_ranges),
};
static const struct regmap_config tps65086_regmap_config = {
.reg_bits = 8,
.val_bits = 8,
.cache_type = REGCACHE_RBTREE,
.volatile_table = &tps65086_volatile_table,
};
static const struct regmap_irq tps65086_irqs[] = {
REGMAP_IRQ_REG(TPS65086_IRQ_DIETEMP, 0, TPS65086_IRQ_DIETEMP_MASK),
REGMAP_IRQ_REG(TPS65086_IRQ_SHUTDN, 0, TPS65086_IRQ_SHUTDN_MASK),
REGMAP_IRQ_REG(TPS65086_IRQ_FAULT, 0, TPS65086_IRQ_FAULT_MASK),
};
static struct regmap_irq_chip tps65086_irq_chip = {
.name = "tps65086",
.status_base = TPS65086_IRQ,
.mask_base = TPS65086_IRQ_MASK,
.ack_base = TPS65086_IRQ,
.init_ack_masked = true,
.num_regs = 1,
.irqs = tps65086_irqs,
.num_irqs = ARRAY_SIZE(tps65086_irqs),
};
static const struct of_device_id tps65086_of_match_table[] = {
{ .compatible = "ti,tps65086", },
{ /* sentinel */ }
};
MODULE_DEVICE_TABLE(of, tps65086_of_match_table);
static int tps65086_probe(struct i2c_client *client,
const struct i2c_device_id *ids)
{
struct tps65086 *tps;
unsigned int version;
int ret;
tps = devm_kzalloc(&client->dev, sizeof(*tps), GFP_KERNEL);
if (!tps)
return -ENOMEM;
i2c_set_clientdata(client, tps);
tps->dev = &client->dev;
tps->irq = client->irq;
tps->regmap = devm_regmap_init_i2c(client, &tps65086_regmap_config);
if (IS_ERR(tps->regmap)) {
dev_err(tps->dev, "Failed to initialize register map\n");
return PTR_ERR(tps->regmap);
}
ret = regmap_read(tps->regmap, TPS65086_DEVICEID, &version);
if (ret) {
dev_err(tps->dev, "Failed to read revision register\n");
return ret;
}
dev_info(tps->dev, "Device: TPS65086%01lX, OTP: %c, Rev: %ld\n",
(version & TPS65086_DEVICEID_PART_MASK),
(char)((version & TPS65086_DEVICEID_OTP_MASK) >> 4) + 'A',
(version & TPS65086_DEVICEID_REV_MASK) >> 6);
if (tps->irq > 0) {
ret = regmap_add_irq_chip(tps->regmap, tps->irq, IRQF_ONESHOT, 0,
&tps65086_irq_chip, &tps->irq_data);
if (ret) {
dev_err(tps->dev, "Failed to register IRQ chip\n");
return ret;
}
}
ret = mfd_add_devices(tps->dev, PLATFORM_DEVID_AUTO, tps65086_cells,
ARRAY_SIZE(tps65086_cells), NULL, 0,
regmap_irq_get_domain(tps->irq_data));
if (ret && tps->irq > 0)
regmap_del_irq_chip(tps->irq, tps->irq_data);
return ret;
}
static int tps65086_remove(struct i2c_client *client)
{
struct tps65086 *tps = i2c_get_clientdata(client);
if (tps->irq > 0)
regmap_del_irq_chip(tps->irq, tps->irq_data);
return 0;
}
static const struct i2c_device_id tps65086_id_table[] = {
{ "tps65086", 0 },
{ /* sentinel */ }
};
MODULE_DEVICE_TABLE(i2c, tps65086_id_table);
static struct i2c_driver tps65086_driver = {
.driver = {
.name = "tps65086",
.of_match_table = tps65086_of_match_table,
},
.probe = tps65086_probe,
.remove = tps65086_remove,
.id_table = tps65086_id_table,
};
module_i2c_driver(tps65086_driver);
MODULE_AUTHOR("Andrew F. Davis <afd@ti.com>");
MODULE_DESCRIPTION("TPS65086 PMIC Driver");
MODULE_LICENSE("GPL v2");
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