mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-09-21 20:22:13 +08:00
d8a66f3621
These drivers don't use the driver_data member of struct i2c_device_id, so don't explicitly initialize this member. This prepares putting driver_data in an anonymous union which requires either no initialization or named designators. But it's also a nice cleanup on its own. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Link: https://lore.kernel.org/r/20240430085654.1028864-2-u.kleine-koenig@pengutronix.de Signed-off-by: Guenter Roeck <linux@roeck-us.net>
132 lines
3.2 KiB
C
132 lines
3.2 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
|
|
/*
|
|
* Driver for Infineon XDP710 Hot-Swap Controller
|
|
*/
|
|
|
|
#include <linux/bitops.h>
|
|
#include <linux/i2c.h>
|
|
#include <linux/module.h>
|
|
#include <linux/of_device.h>
|
|
#include "pmbus.h"
|
|
|
|
#define XDP710_REG_CFG 0xD3
|
|
#define XDP710_V_SNS_CFG 0xD4
|
|
#define XDP710_CS_RNG 0xD5
|
|
|
|
/*
|
|
* The table to map configuration register values
|
|
* to sense resistor values
|
|
*/
|
|
static const int micro_ohm_rsense[] = {
|
|
200, 250, 300, 330, 400, 470, 500, 600,
|
|
670, 700, 750, 800, 900, 1000, 1100, 1200,
|
|
1250, 1300, 1400, 1500, 1600, 1700, 1800, 1900,
|
|
2000, 2100, 2200, 2300, 2400, 2500, 2600, 2700,
|
|
2800, 3000, 3100, 3200, 3300, 3400, 3500, 3600,
|
|
3700, 3800, 3900, 4000, 4100, 4200, 4300, 4400,
|
|
4500, 4600, 4700, 4800, 4900, 5000, 5500, 6000,
|
|
6500, 7000, 7500, 8000, 8500, 9000, 9500, 10000
|
|
};
|
|
|
|
static struct pmbus_driver_info xdp710_info = {
|
|
.pages = 1,
|
|
.format[PSC_VOLTAGE_IN] = direct,
|
|
.format[PSC_VOLTAGE_OUT] = direct,
|
|
.format[PSC_CURRENT_OUT] = direct,
|
|
.format[PSC_POWER] = direct,
|
|
.format[PSC_TEMPERATURE] = direct,
|
|
.m[PSC_VOLTAGE_IN] = 4653,
|
|
.b[PSC_VOLTAGE_IN] = 0,
|
|
.R[PSC_VOLTAGE_IN] = -2,
|
|
.m[PSC_VOLTAGE_OUT] = 4653,
|
|
.b[PSC_VOLTAGE_OUT] = 0,
|
|
.R[PSC_VOLTAGE_OUT] = -2,
|
|
.m[PSC_CURRENT_OUT] = 23165,
|
|
.b[PSC_CURRENT_OUT] = 0,
|
|
.R[PSC_CURRENT_OUT] = -2,
|
|
.m[PSC_POWER] = 4211,
|
|
.b[PSC_POWER] = 0,
|
|
.R[PSC_POWER] = -2,
|
|
.m[PSC_TEMPERATURE] = 52,
|
|
.b[PSC_TEMPERATURE] = 14321,
|
|
.R[PSC_TEMPERATURE] = -1,
|
|
.func[0] =
|
|
PMBUS_HAVE_VIN | PMBUS_HAVE_VOUT | PMBUS_HAVE_PIN |
|
|
PMBUS_HAVE_TEMP | PMBUS_HAVE_IOUT |
|
|
PMBUS_HAVE_STATUS_INPUT | PMBUS_HAVE_STATUS_TEMP,
|
|
};
|
|
|
|
static int xdp710_probe(struct i2c_client *client)
|
|
{
|
|
struct pmbus_driver_info *info;
|
|
u8 cs_rng;
|
|
u8 vtlm_rng;
|
|
int rsense;
|
|
int ret;
|
|
int m = 0;
|
|
|
|
info = devm_kmemdup(&client->dev, &xdp710_info, sizeof(*info),
|
|
GFP_KERNEL);
|
|
if (!info)
|
|
return -ENOMEM;
|
|
|
|
ret = i2c_smbus_read_word_data(client, XDP710_CS_RNG);
|
|
if (ret < 0) {
|
|
dev_err(&client->dev, "Can't get CS_RNG");
|
|
return ret;
|
|
}
|
|
cs_rng = (ret >> 6) & GENMASK(1, 0);
|
|
|
|
ret = i2c_smbus_read_word_data(client, XDP710_V_SNS_CFG);
|
|
if (ret < 0) {
|
|
dev_err(&client->dev, "Can't get V_SNS_CFG");
|
|
return ret;
|
|
}
|
|
vtlm_rng = ret & GENMASK(1, 0);
|
|
|
|
ret = i2c_smbus_read_word_data(client, XDP710_REG_CFG);
|
|
if (ret < 0) {
|
|
dev_err(&client->dev, "Can't get REG_CFG");
|
|
return ret;
|
|
}
|
|
ret &= GENMASK(5, 0);
|
|
rsense = micro_ohm_rsense[ret];
|
|
|
|
info->m[PSC_VOLTAGE_IN] <<= vtlm_rng;
|
|
info->m[PSC_VOLTAGE_OUT] <<= vtlm_rng;
|
|
|
|
m = info->m[PSC_CURRENT_OUT];
|
|
info->m[PSC_CURRENT_OUT] = DIV_ROUND_CLOSEST(m * rsense >> cs_rng, 1000);
|
|
|
|
m = info->m[PSC_POWER];
|
|
info->m[PSC_POWER] = DIV_ROUND_CLOSEST(m * rsense >> cs_rng, 1000);
|
|
|
|
return pmbus_do_probe(client, info);
|
|
}
|
|
|
|
static const struct of_device_id xdp710_of_match[] = {
|
|
{ .compatible = "infineon,xdp710" },
|
|
{}
|
|
};
|
|
|
|
static const struct i2c_device_id xdp710_id[] = {
|
|
{"xdp710"},
|
|
{ }
|
|
};
|
|
MODULE_DEVICE_TABLE(i2c, xdp710_id);
|
|
|
|
static struct i2c_driver xdp710_driver = {
|
|
.driver = {
|
|
.name = "xdp710",
|
|
.of_match_table = xdp710_of_match,
|
|
},
|
|
.probe = xdp710_probe,
|
|
.id_table = xdp710_id,
|
|
};
|
|
module_i2c_driver(xdp710_driver);
|
|
|
|
MODULE_AUTHOR("Peter Yin <peter.yin@quantatw.com>");
|
|
MODULE_DESCRIPTION("PMBus driver for XDP710 HSC");
|
|
MODULE_LICENSE("GPL");
|
|
MODULE_IMPORT_NS(PMBUS);
|