mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-24 01:41:39 +00:00
![Thomas Gleixner](/assets/img/avatar_default.png)
Based on 3 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation either version 2 of the license or at your option any later version this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation either version 2 of the license or at your option any later version [author] [kishon] [vijay] [abraham] [i] [kishon]@[ti] [com] this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation either version 2 of the license or at your option any later version [author] [graeme] [gregory] [gg]@[slimlogic] [co] [uk] [author] [kishon] [vijay] [abraham] [i] [kishon]@[ti] [com] [based] [on] [twl6030]_[usb] [c] [author] [hema] [hk] [hemahk]@[ti] [com] this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 1105 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Richard Fontana <rfontana@redhat.com> Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070033.202006027@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
111 lines
2.9 KiB
C
111 lines
2.9 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
|
|
/*
|
|
* Hardware monitoring driver for Texas Instruments TPS53679
|
|
*
|
|
* Copyright (c) 2017 Mellanox Technologies. All rights reserved.
|
|
* Copyright (c) 2017 Vadim Pasternak <vadimp@mellanox.com>
|
|
*/
|
|
|
|
#include <linux/err.h>
|
|
#include <linux/i2c.h>
|
|
#include <linux/init.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/module.h>
|
|
#include "pmbus.h"
|
|
|
|
#define TPS53679_PROT_VR12_5MV 0x01 /* VR12.0 mode, 5-mV DAC */
|
|
#define TPS53679_PROT_VR12_5_10MV 0x02 /* VR12.5 mode, 10-mV DAC */
|
|
#define TPS53679_PROT_VR13_10MV 0x04 /* VR13.0 mode, 10-mV DAC */
|
|
#define TPS53679_PROT_IMVP8_5MV 0x05 /* IMVP8 mode, 5-mV DAC */
|
|
#define TPS53679_PROT_VR13_5MV 0x07 /* VR13.0 mode, 5-mV DAC */
|
|
#define TPS53679_PAGE_NUM 2
|
|
|
|
static int tps53679_identify(struct i2c_client *client,
|
|
struct pmbus_driver_info *info)
|
|
{
|
|
u8 vout_params;
|
|
int ret;
|
|
|
|
/* Read the register with VOUT scaling value.*/
|
|
ret = pmbus_read_byte_data(client, 0, PMBUS_VOUT_MODE);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
vout_params = ret & GENMASK(4, 0);
|
|
|
|
switch (vout_params) {
|
|
case TPS53679_PROT_VR13_10MV:
|
|
case TPS53679_PROT_VR12_5_10MV:
|
|
info->vrm_version = vr13;
|
|
break;
|
|
case TPS53679_PROT_VR13_5MV:
|
|
case TPS53679_PROT_VR12_5MV:
|
|
case TPS53679_PROT_IMVP8_5MV:
|
|
info->vrm_version = vr12;
|
|
break;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct pmbus_driver_info tps53679_info = {
|
|
.pages = TPS53679_PAGE_NUM,
|
|
.format[PSC_VOLTAGE_IN] = linear,
|
|
.format[PSC_VOLTAGE_OUT] = vid,
|
|
.format[PSC_TEMPERATURE] = linear,
|
|
.format[PSC_CURRENT_OUT] = linear,
|
|
.format[PSC_POWER] = linear,
|
|
.func[0] = PMBUS_HAVE_VIN | PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT |
|
|
PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT |
|
|
PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP |
|
|
PMBUS_HAVE_POUT,
|
|
.func[1] = PMBUS_HAVE_VIN | PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT |
|
|
PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT |
|
|
PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP |
|
|
PMBUS_HAVE_POUT,
|
|
.identify = tps53679_identify,
|
|
};
|
|
|
|
static int tps53679_probe(struct i2c_client *client,
|
|
const struct i2c_device_id *id)
|
|
{
|
|
struct pmbus_driver_info *info;
|
|
|
|
info = devm_kmemdup(&client->dev, &tps53679_info, sizeof(*info),
|
|
GFP_KERNEL);
|
|
if (!info)
|
|
return -ENOMEM;
|
|
|
|
return pmbus_do_probe(client, id, info);
|
|
}
|
|
|
|
static const struct i2c_device_id tps53679_id[] = {
|
|
{"tps53679", 0},
|
|
{}
|
|
};
|
|
|
|
MODULE_DEVICE_TABLE(i2c, tps53679_id);
|
|
|
|
static const struct of_device_id __maybe_unused tps53679_of_match[] = {
|
|
{.compatible = "ti,tps53679"},
|
|
{}
|
|
};
|
|
MODULE_DEVICE_TABLE(of, tps53679_of_match);
|
|
|
|
static struct i2c_driver tps53679_driver = {
|
|
.driver = {
|
|
.name = "tps53679",
|
|
.of_match_table = of_match_ptr(tps53679_of_match),
|
|
},
|
|
.probe = tps53679_probe,
|
|
.remove = pmbus_do_remove,
|
|
.id_table = tps53679_id,
|
|
};
|
|
|
|
module_i2c_driver(tps53679_driver);
|
|
|
|
MODULE_AUTHOR("Vadim Pasternak <vadimp@mellanox.com>");
|
|
MODULE_DESCRIPTION("PMBus driver for Texas Instruments TPS53679");
|
|
MODULE_LICENSE("GPL");
|