f38963b9cd
Skip status check for both pfe1100 and pfe3000 because the communication
error is also observed on pfe1100 devices.
Signed-off-by: Tao Ren <rentao.bupt@gmail.com>
Fixes: 626bb2f3fb hwmon: (pmbus) add driver for BEL PFE1100 and PFE3000
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20230804221403.28931-1-rentao.bupt@gmail.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
133 lines
3.5 KiB
C
133 lines
3.5 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
* Hardware monitoring driver for BEL PFE family power supplies.
|
|
*
|
|
* Copyright (c) 2019 Facebook Inc.
|
|
*/
|
|
|
|
#include <linux/err.h>
|
|
#include <linux/i2c.h>
|
|
#include <linux/init.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/module.h>
|
|
#include <linux/pmbus.h>
|
|
|
|
#include "pmbus.h"
|
|
|
|
enum chips {pfe1100, pfe3000};
|
|
|
|
/*
|
|
* Disable status check because some devices report communication error
|
|
* (invalid command) for VOUT_MODE command (0x20) although the correct
|
|
* VOUT_MODE (0x16) is returned: it leads to incorrect exponent in linear
|
|
* mode.
|
|
* This affects both pfe3000 and pfe1100.
|
|
*/
|
|
static struct pmbus_platform_data pfe_plat_data = {
|
|
.flags = PMBUS_SKIP_STATUS_CHECK,
|
|
};
|
|
|
|
static struct pmbus_driver_info pfe_driver_info[] = {
|
|
[pfe1100] = {
|
|
.pages = 1,
|
|
.format[PSC_VOLTAGE_IN] = linear,
|
|
.format[PSC_VOLTAGE_OUT] = linear,
|
|
.format[PSC_CURRENT_IN] = linear,
|
|
.format[PSC_CURRENT_OUT] = linear,
|
|
.format[PSC_POWER] = linear,
|
|
.format[PSC_TEMPERATURE] = linear,
|
|
.format[PSC_FAN] = linear,
|
|
|
|
.func[0] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT |
|
|
PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT |
|
|
PMBUS_HAVE_POUT |
|
|
PMBUS_HAVE_VIN | PMBUS_HAVE_IIN |
|
|
PMBUS_HAVE_PIN | PMBUS_HAVE_STATUS_INPUT |
|
|
PMBUS_HAVE_TEMP | PMBUS_HAVE_TEMP2 |
|
|
PMBUS_HAVE_STATUS_TEMP |
|
|
PMBUS_HAVE_FAN12,
|
|
},
|
|
|
|
[pfe3000] = {
|
|
.pages = 7,
|
|
.format[PSC_VOLTAGE_IN] = linear,
|
|
.format[PSC_VOLTAGE_OUT] = linear,
|
|
.format[PSC_CURRENT_IN] = linear,
|
|
.format[PSC_CURRENT_OUT] = linear,
|
|
.format[PSC_POWER] = linear,
|
|
.format[PSC_TEMPERATURE] = linear,
|
|
.format[PSC_FAN] = linear,
|
|
|
|
/* Page 0: V1. */
|
|
.func[0] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT |
|
|
PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT |
|
|
PMBUS_HAVE_POUT | PMBUS_HAVE_FAN12 |
|
|
PMBUS_HAVE_VIN | PMBUS_HAVE_IIN |
|
|
PMBUS_HAVE_PIN | PMBUS_HAVE_STATUS_INPUT |
|
|
PMBUS_HAVE_TEMP | PMBUS_HAVE_TEMP2 |
|
|
PMBUS_HAVE_TEMP3 | PMBUS_HAVE_STATUS_TEMP |
|
|
PMBUS_HAVE_VCAP,
|
|
|
|
/* Page 1: Vsb. */
|
|
.func[1] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT |
|
|
PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT |
|
|
PMBUS_HAVE_PIN | PMBUS_HAVE_STATUS_INPUT |
|
|
PMBUS_HAVE_POUT,
|
|
|
|
/*
|
|
* Page 2: V1 Ishare.
|
|
* Page 3: Reserved.
|
|
* Page 4: V1 Cathode.
|
|
* Page 5: Vsb Cathode.
|
|
* Page 6: V1 Sense.
|
|
*/
|
|
.func[2] = PMBUS_HAVE_VOUT,
|
|
.func[4] = PMBUS_HAVE_VOUT,
|
|
.func[5] = PMBUS_HAVE_VOUT,
|
|
.func[6] = PMBUS_HAVE_VOUT,
|
|
},
|
|
};
|
|
|
|
static const struct i2c_device_id pfe_device_id[];
|
|
|
|
static int pfe_pmbus_probe(struct i2c_client *client)
|
|
{
|
|
int model;
|
|
|
|
model = (int)i2c_match_id(pfe_device_id, client)->driver_data;
|
|
client->dev.platform_data = &pfe_plat_data;
|
|
|
|
/*
|
|
* PFE3000-12-069RA devices may not stay in page 0 during device
|
|
* probe which leads to probe failure (read status word failed).
|
|
* So let's set the device to page 0 at the beginning.
|
|
*/
|
|
if (model == pfe3000)
|
|
i2c_smbus_write_byte_data(client, PMBUS_PAGE, 0);
|
|
|
|
return pmbus_do_probe(client, &pfe_driver_info[model]);
|
|
}
|
|
|
|
static const struct i2c_device_id pfe_device_id[] = {
|
|
{"pfe1100", pfe1100},
|
|
{"pfe3000", pfe3000},
|
|
{}
|
|
};
|
|
|
|
MODULE_DEVICE_TABLE(i2c, pfe_device_id);
|
|
|
|
static struct i2c_driver pfe_pmbus_driver = {
|
|
.driver = {
|
|
.name = "bel-pfe",
|
|
},
|
|
.probe = pfe_pmbus_probe,
|
|
.id_table = pfe_device_id,
|
|
};
|
|
|
|
module_i2c_driver(pfe_pmbus_driver);
|
|
|
|
MODULE_AUTHOR("Tao Ren <rentao.bupt@gmail.com>");
|
|
MODULE_DESCRIPTION("PMBus driver for BEL PFE Family Power Supplies");
|
|
MODULE_LICENSE("GPL");
|
|
MODULE_IMPORT_NS(PMBUS);
|