mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-16 00:06:46 +07:00
b45b719ee0
Add support for the TPS65912 device. It provides communication through I2C and contains the following components: - Regulators - Load switches - GPO controller Signed-off-by: Andrew F. Davis <afd@ti.com> Signed-off-by: Lee Jones <lee.jones@linaro.org>
150 lines
4.1 KiB
C
150 lines
4.1 KiB
C
/*
|
|
* Copyright (C) 2015 Texas Instruments Incorporated - http://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", },
|
|
};
|
|
|
|
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);
|
|
|
|
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) {
|
|
regmap_del_irq_chip(tps->irq, tps->irq_data);
|
|
return ret;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int tps65086_remove(struct i2c_client *client)
|
|
{
|
|
struct tps65086 *tps = i2c_get_clientdata(client);
|
|
|
|
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");
|