mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-11-24 13:40:53 +07:00
707d678a5c
Add the Texas Instruments BQ28z610 battery monitor. The register address map is laid out the same as compared to other devices within the file. The battery status register bits are similar to the bq27z561 but they are different compared to other fuel gauge devices within this file. Signed-off-by: Dan Murphy <dmurphy@ti.com> Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
312 lines
7.1 KiB
C
312 lines
7.1 KiB
C
/*
|
|
* BQ27xxx battery monitor I2C driver
|
|
*
|
|
* 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 express or implied; without even the implied warranty
|
|
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*/
|
|
|
|
#include <linux/i2c.h>
|
|
#include <linux/interrupt.h>
|
|
#include <linux/module.h>
|
|
#include <asm/unaligned.h>
|
|
|
|
#include <linux/power/bq27xxx_battery.h>
|
|
|
|
static DEFINE_IDR(battery_id);
|
|
static DEFINE_MUTEX(battery_mutex);
|
|
|
|
static irqreturn_t bq27xxx_battery_irq_handler_thread(int irq, void *data)
|
|
{
|
|
struct bq27xxx_device_info *di = data;
|
|
|
|
bq27xxx_battery_update(di);
|
|
|
|
return IRQ_HANDLED;
|
|
}
|
|
|
|
static int bq27xxx_battery_i2c_read(struct bq27xxx_device_info *di, u8 reg,
|
|
bool single)
|
|
{
|
|
struct i2c_client *client = to_i2c_client(di->dev);
|
|
struct i2c_msg msg[2];
|
|
u8 data[2];
|
|
int ret;
|
|
|
|
if (!client->adapter)
|
|
return -ENODEV;
|
|
|
|
msg[0].addr = client->addr;
|
|
msg[0].flags = 0;
|
|
msg[0].buf = ®
|
|
msg[0].len = sizeof(reg);
|
|
msg[1].addr = client->addr;
|
|
msg[1].flags = I2C_M_RD;
|
|
msg[1].buf = data;
|
|
if (single)
|
|
msg[1].len = 1;
|
|
else
|
|
msg[1].len = 2;
|
|
|
|
ret = i2c_transfer(client->adapter, msg, ARRAY_SIZE(msg));
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
if (!single)
|
|
ret = get_unaligned_le16(data);
|
|
else
|
|
ret = data[0];
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int bq27xxx_battery_i2c_write(struct bq27xxx_device_info *di, u8 reg,
|
|
int value, bool single)
|
|
{
|
|
struct i2c_client *client = to_i2c_client(di->dev);
|
|
struct i2c_msg msg;
|
|
u8 data[4];
|
|
int ret;
|
|
|
|
if (!client->adapter)
|
|
return -ENODEV;
|
|
|
|
data[0] = reg;
|
|
if (single) {
|
|
data[1] = (u8) value;
|
|
msg.len = 2;
|
|
} else {
|
|
put_unaligned_le16(value, &data[1]);
|
|
msg.len = 3;
|
|
}
|
|
|
|
msg.buf = data;
|
|
msg.addr = client->addr;
|
|
msg.flags = 0;
|
|
|
|
ret = i2c_transfer(client->adapter, &msg, 1);
|
|
if (ret < 0)
|
|
return ret;
|
|
if (ret != 1)
|
|
return -EINVAL;
|
|
return 0;
|
|
}
|
|
|
|
static int bq27xxx_battery_i2c_bulk_read(struct bq27xxx_device_info *di, u8 reg,
|
|
u8 *data, int len)
|
|
{
|
|
struct i2c_client *client = to_i2c_client(di->dev);
|
|
int ret;
|
|
|
|
if (!client->adapter)
|
|
return -ENODEV;
|
|
|
|
ret = i2c_smbus_read_i2c_block_data(client, reg, len, data);
|
|
if (ret < 0)
|
|
return ret;
|
|
if (ret != len)
|
|
return -EINVAL;
|
|
return 0;
|
|
}
|
|
|
|
static int bq27xxx_battery_i2c_bulk_write(struct bq27xxx_device_info *di,
|
|
u8 reg, u8 *data, int len)
|
|
{
|
|
struct i2c_client *client = to_i2c_client(di->dev);
|
|
struct i2c_msg msg;
|
|
u8 buf[33];
|
|
int ret;
|
|
|
|
if (!client->adapter)
|
|
return -ENODEV;
|
|
|
|
buf[0] = reg;
|
|
memcpy(&buf[1], data, len);
|
|
|
|
msg.buf = buf;
|
|
msg.addr = client->addr;
|
|
msg.flags = 0;
|
|
msg.len = len + 1;
|
|
|
|
ret = i2c_transfer(client->adapter, &msg, 1);
|
|
if (ret < 0)
|
|
return ret;
|
|
if (ret != 1)
|
|
return -EINVAL;
|
|
return 0;
|
|
}
|
|
|
|
static int bq27xxx_battery_i2c_probe(struct i2c_client *client,
|
|
const struct i2c_device_id *id)
|
|
{
|
|
struct bq27xxx_device_info *di;
|
|
int ret;
|
|
char *name;
|
|
int num;
|
|
|
|
/* Get new ID for the new battery device */
|
|
mutex_lock(&battery_mutex);
|
|
num = idr_alloc(&battery_id, client, 0, 0, GFP_KERNEL);
|
|
mutex_unlock(&battery_mutex);
|
|
if (num < 0)
|
|
return num;
|
|
|
|
name = devm_kasprintf(&client->dev, GFP_KERNEL, "%s-%d", id->name, num);
|
|
if (!name)
|
|
goto err_mem;
|
|
|
|
di = devm_kzalloc(&client->dev, sizeof(*di), GFP_KERNEL);
|
|
if (!di)
|
|
goto err_mem;
|
|
|
|
di->id = num;
|
|
di->dev = &client->dev;
|
|
di->chip = id->driver_data;
|
|
di->name = name;
|
|
|
|
di->bus.read = bq27xxx_battery_i2c_read;
|
|
di->bus.write = bq27xxx_battery_i2c_write;
|
|
di->bus.read_bulk = bq27xxx_battery_i2c_bulk_read;
|
|
di->bus.write_bulk = bq27xxx_battery_i2c_bulk_write;
|
|
|
|
ret = bq27xxx_battery_setup(di);
|
|
if (ret)
|
|
goto err_failed;
|
|
|
|
/* Schedule a polling after about 1 min */
|
|
schedule_delayed_work(&di->work, 60 * HZ);
|
|
|
|
i2c_set_clientdata(client, di);
|
|
|
|
if (client->irq) {
|
|
ret = devm_request_threaded_irq(&client->dev, client->irq,
|
|
NULL, bq27xxx_battery_irq_handler_thread,
|
|
IRQF_ONESHOT,
|
|
di->name, di);
|
|
if (ret) {
|
|
dev_err(&client->dev,
|
|
"Unable to register IRQ %d error %d\n",
|
|
client->irq, ret);
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
|
|
err_mem:
|
|
ret = -ENOMEM;
|
|
|
|
err_failed:
|
|
mutex_lock(&battery_mutex);
|
|
idr_remove(&battery_id, num);
|
|
mutex_unlock(&battery_mutex);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int bq27xxx_battery_i2c_remove(struct i2c_client *client)
|
|
{
|
|
struct bq27xxx_device_info *di = i2c_get_clientdata(client);
|
|
|
|
bq27xxx_battery_teardown(di);
|
|
|
|
mutex_lock(&battery_mutex);
|
|
idr_remove(&battery_id, di->id);
|
|
mutex_unlock(&battery_mutex);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct i2c_device_id bq27xxx_i2c_id_table[] = {
|
|
{ "bq27200", BQ27000 },
|
|
{ "bq27210", BQ27010 },
|
|
{ "bq27500", BQ2750X },
|
|
{ "bq27510", BQ2751X },
|
|
{ "bq27520", BQ2752X },
|
|
{ "bq27500-1", BQ27500 },
|
|
{ "bq27510g1", BQ27510G1 },
|
|
{ "bq27510g2", BQ27510G2 },
|
|
{ "bq27510g3", BQ27510G3 },
|
|
{ "bq27520g1", BQ27520G1 },
|
|
{ "bq27520g2", BQ27520G2 },
|
|
{ "bq27520g3", BQ27520G3 },
|
|
{ "bq27520g4", BQ27520G4 },
|
|
{ "bq27521", BQ27521 },
|
|
{ "bq27530", BQ27530 },
|
|
{ "bq27531", BQ27531 },
|
|
{ "bq27541", BQ27541 },
|
|
{ "bq27542", BQ27542 },
|
|
{ "bq27546", BQ27546 },
|
|
{ "bq27742", BQ27742 },
|
|
{ "bq27545", BQ27545 },
|
|
{ "bq27411", BQ27411 },
|
|
{ "bq27421", BQ27421 },
|
|
{ "bq27425", BQ27425 },
|
|
{ "bq27426", BQ27426 },
|
|
{ "bq27441", BQ27441 },
|
|
{ "bq27621", BQ27621 },
|
|
{ "bq27z561", BQ27Z561 },
|
|
{ "bq28z610", BQ28Z610 },
|
|
{},
|
|
};
|
|
MODULE_DEVICE_TABLE(i2c, bq27xxx_i2c_id_table);
|
|
|
|
#ifdef CONFIG_OF
|
|
static const struct of_device_id bq27xxx_battery_i2c_of_match_table[] = {
|
|
{ .compatible = "ti,bq27200" },
|
|
{ .compatible = "ti,bq27210" },
|
|
{ .compatible = "ti,bq27500" },
|
|
{ .compatible = "ti,bq27510" },
|
|
{ .compatible = "ti,bq27520" },
|
|
{ .compatible = "ti,bq27500-1" },
|
|
{ .compatible = "ti,bq27510g1" },
|
|
{ .compatible = "ti,bq27510g2" },
|
|
{ .compatible = "ti,bq27510g3" },
|
|
{ .compatible = "ti,bq27520g1" },
|
|
{ .compatible = "ti,bq27520g2" },
|
|
{ .compatible = "ti,bq27520g3" },
|
|
{ .compatible = "ti,bq27520g4" },
|
|
{ .compatible = "ti,bq27521" },
|
|
{ .compatible = "ti,bq27530" },
|
|
{ .compatible = "ti,bq27531" },
|
|
{ .compatible = "ti,bq27541" },
|
|
{ .compatible = "ti,bq27542" },
|
|
{ .compatible = "ti,bq27546" },
|
|
{ .compatible = "ti,bq27742" },
|
|
{ .compatible = "ti,bq27545" },
|
|
{ .compatible = "ti,bq27411" },
|
|
{ .compatible = "ti,bq27421" },
|
|
{ .compatible = "ti,bq27425" },
|
|
{ .compatible = "ti,bq27426" },
|
|
{ .compatible = "ti,bq27441" },
|
|
{ .compatible = "ti,bq27621" },
|
|
{ .compatible = "ti,bq27z561" },
|
|
{ .compatible = "ti,bq28z610" },
|
|
{},
|
|
};
|
|
MODULE_DEVICE_TABLE(of, bq27xxx_battery_i2c_of_match_table);
|
|
#endif
|
|
|
|
static struct i2c_driver bq27xxx_battery_i2c_driver = {
|
|
.driver = {
|
|
.name = "bq27xxx-battery",
|
|
.of_match_table = of_match_ptr(bq27xxx_battery_i2c_of_match_table),
|
|
},
|
|
.probe = bq27xxx_battery_i2c_probe,
|
|
.remove = bq27xxx_battery_i2c_remove,
|
|
.id_table = bq27xxx_i2c_id_table,
|
|
};
|
|
module_i2c_driver(bq27xxx_battery_i2c_driver);
|
|
|
|
MODULE_AUTHOR("Andrew F. Davis <afd@ti.com>");
|
|
MODULE_DESCRIPTION("BQ27xxx battery monitor i2c driver");
|
|
MODULE_LICENSE("GPL");
|