From aaafb7c8eb1c53d50ac1857f3b997baeac383378 Mon Sep 17 00:00:00 2001 From: Vadim Pasternak Date: Mon, 13 Jan 2020 15:08:39 +0000 Subject: hwmon: (pmbus) Add support for Infineon Multi-phase xdpe122 family controllers Add support for devices XDPE12254, XDPE12284. All these device support two pages. The below lists of VOUT_MODE command readout with their related VID protocols, Digital to Analog Converter steps, supported by these devices: VR12.0 mode, 5-mV DAC - 0x01; VR12.5 mode, 10-mV DAC - 0x02; IMVP9 mode, 5-mV DAC - 0x03; AMD mode 6.25mV - 0x10. Signed-off-by: Vadim Pasternak Link: https://lore.kernel.org/r/20200113150841.17670-5-vadimp@mellanox.com [groeck: Added missing break statement] Signed-off-by: Guenter Roeck --- drivers/hwmon/pmbus/xdpe12284.c | 117 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 117 insertions(+) create mode 100644 drivers/hwmon/pmbus/xdpe12284.c (limited to 'drivers/hwmon/pmbus/xdpe12284.c') diff --git a/drivers/hwmon/pmbus/xdpe12284.c b/drivers/hwmon/pmbus/xdpe12284.c new file mode 100644 index 000000000000..3d47806ff4d3 --- /dev/null +++ b/drivers/hwmon/pmbus/xdpe12284.c @@ -0,0 +1,117 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Hardware monitoring driver for Infineon Multi-phase Digital VR Controllers + * + * Copyright (c) 2020 Mellanox Technologies. All rights reserved. + */ + +#include +#include +#include +#include +#include +#include "pmbus.h" + +#define XDPE122_PROT_VR12_5MV 0x01 /* VR12.0 mode, 5-mV DAC */ +#define XDPE122_PROT_VR12_5_10MV 0x02 /* VR12.5 mode, 10-mV DAC */ +#define XDPE122_PROT_IMVP9_10MV 0x03 /* IMVP9 mode, 10-mV DAC */ +#define XDPE122_AMD_625MV 0x10 /* AMD mode 6.25mV */ +#define XDPE122_PAGE_NUM 2 + +static int xdpe122_identify(struct i2c_client *client, + struct pmbus_driver_info *info) +{ + u8 vout_params; + int i, ret; + + for (i = 0; i < XDPE122_PAGE_NUM; i++) { + /* Read the register with VOUT scaling value.*/ + ret = pmbus_read_byte_data(client, i, PMBUS_VOUT_MODE); + if (ret < 0) + return ret; + + vout_params = ret & GENMASK(4, 0); + + switch (vout_params) { + case XDPE122_PROT_VR12_5_10MV: + info->vrm_version[i] = vr13; + break; + case XDPE122_PROT_VR12_5MV: + info->vrm_version[i] = vr12; + break; + case XDPE122_PROT_IMVP9_10MV: + info->vrm_version[i] = imvp9; + break; + case XDPE122_AMD_625MV: + info->vrm_version[i] = amd625mv; + break; + default: + return -EINVAL; + } + } + + return 0; +} + +static struct pmbus_driver_info xdpe122_info = { + .pages = XDPE122_PAGE_NUM, + .format[PSC_VOLTAGE_IN] = linear, + .format[PSC_VOLTAGE_OUT] = vid, + .format[PSC_TEMPERATURE] = linear, + .format[PSC_CURRENT_IN] = linear, + .format[PSC_CURRENT_OUT] = linear, + .format[PSC_POWER] = linear, + .func[0] = PMBUS_HAVE_VIN | PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT | + PMBUS_HAVE_IIN | PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT | + PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP | + PMBUS_HAVE_POUT | PMBUS_HAVE_PIN | PMBUS_HAVE_STATUS_INPUT, + .func[1] = PMBUS_HAVE_VIN | PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT | + PMBUS_HAVE_IIN | PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT | + PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP | + PMBUS_HAVE_POUT | PMBUS_HAVE_PIN | PMBUS_HAVE_STATUS_INPUT, + .identify = xdpe122_identify, +}; + +static int xdpe122_probe(struct i2c_client *client, + const struct i2c_device_id *id) +{ + struct pmbus_driver_info *info; + + info = devm_kmemdup(&client->dev, &xdpe122_info, sizeof(*info), + GFP_KERNEL); + if (!info) + return -ENOMEM; + + return pmbus_do_probe(client, id, info); +} + +static const struct i2c_device_id xdpe122_id[] = { + {"xdpe12254", 0}, + {"xdpe12284", 0}, + {} +}; + +MODULE_DEVICE_TABLE(i2c, xdpe122_id); + +static const struct of_device_id __maybe_unused xdpe122_of_match[] = { + {.compatible = "infineon, xdpe12254"}, + {.compatible = "infineon, xdpe12284"}, + {} +}; +MODULE_DEVICE_TABLE(of, xdpe122_of_match); + +static struct i2c_driver xdpe122_driver = { + .driver = { + .name = "xdpe12284", + .of_match_table = of_match_ptr(xdpe122_of_match), + }, + .probe = xdpe122_probe, + .remove = pmbus_do_remove, + .id_table = xdpe122_id, +}; + +module_i2c_driver(xdpe122_driver); + +MODULE_AUTHOR("Vadim Pasternak "); +MODULE_DESCRIPTION("PMBus driver for Infineon XDPE122 family"); +MODULE_LICENSE("GPL"); -- cgit