hwmon: (pmbus) Add support for Infineon XDP710
Add support for Infineon XDP710.This is a Hot-Swap Controller. Signed-off-by: Peter Yin <peteryin.openbmc@gmail.com> Link: https://lore.kernel.org/r/20240425153608.4003782-2-peteryin.openbmc@gmail.com [groeck: s/microOhmRsense/micro_ohm_osense/g; declared array static] Signed-off-by: Guenter Roeck <linux@roeck-us.net>
This commit is contained in:
Peter Yin
Guenter Roeck
parent
cffa8fb56a
commit
35fe06d94e
@ -251,6 +251,7 @@ Hardware Monitoring Kernel Drivers
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wm831x
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wm8350
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xgene-hwmon
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xdp710
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xdpe12284
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xdpe152c4
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zl6100
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83
Documentation/hwmon/xdp710.rst
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83
Documentation/hwmon/xdp710.rst
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@ -0,0 +1,83 @@
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.. SPDX-License-Identifier: GPL-2.0
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Kernel driver xdp710
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====================
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Supported chips:
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* Infineon XDP710
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Prefix: 'xdp710'
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* Datasheet
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Publicly available at the Infineon website : https://www.infineon.com/dgdl/Infineon-XDP710-001-DataSheet-v01_00-EN.pdf?fileId=8ac78c8c8412f8d301848a5316290b97
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Author:
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Peter Yin <peteryin.openbmc@gmail.com>
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Description
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-----------
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This driver implements support for Infineon XDP710 Hot-Swap Controller.
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Device compliant with:
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- PMBus rev 1.3 interface.
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Device supports direct and linear format for reading input voltage,
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output voltage, output current, input power and temperature.
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The driver exports the following attributes via the 'sysfs' files
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for input voltage:
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**in1_input**
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**in1_label**
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**in1_max**
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**in1_max_alarm**
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**in1_min**
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**in1_min_alarm**
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The driver provides the following attributes for output voltage:
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**in2_input**
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**in2_label**
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**in2_alarm**
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The driver provides the following attributes for output current:
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**curr1_input**
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**curr1_label**
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**curr1_alarm**
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**curr1_max**
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The driver provides the following attributes for input power:
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**power1_input**
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**power1_label**
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**power1_alarm**
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The driver provides the following attributes for temperature:
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**temp1_input**
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**temp1_max**
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**temp1_max_alarm**
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**temp1_crit**
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**temp1_crit_alarm**
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@ -521,6 +521,15 @@ config SENSORS_UCD9200
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This driver can also be built as a module. If so, the module will
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be called ucd9200.
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config SENSORS_XDP710
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tristate "Infineon XDP710 family"
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help
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If you say yes here you get hardware monitoring support for Infineon
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XDP710.
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This driver can also be built as a module. If so, the module will
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be called xdp710.
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config SENSORS_XDPE152
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tristate "Infineon XDPE152 family"
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help
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@ -52,6 +52,7 @@ obj-$(CONFIG_SENSORS_TPS53679) += tps53679.o
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obj-$(CONFIG_SENSORS_TPS546D24) += tps546d24.o
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obj-$(CONFIG_SENSORS_UCD9000) += ucd9000.o
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obj-$(CONFIG_SENSORS_UCD9200) += ucd9200.o
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obj-$(CONFIG_SENSORS_XDP710) += xdp710.o
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obj-$(CONFIG_SENSORS_XDPE122) += xdpe12284.o
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obj-$(CONFIG_SENSORS_XDPE152) += xdpe152c4.o
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obj-$(CONFIG_SENSORS_ZL6100) += zl6100.o
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131
drivers/hwmon/pmbus/xdp710.c
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131
drivers/hwmon/pmbus/xdp710.c
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// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Driver for Infineon XDP710 Hot-Swap Controller
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*/
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#include <linux/bitops.h>
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#include <linux/i2c.h>
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#include <linux/module.h>
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#include <linux/of_device.h>
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#include "pmbus.h"
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#define XDP710_REG_CFG 0xD3
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#define XDP710_V_SNS_CFG 0xD4
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#define XDP710_CS_RNG 0xD5
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/*
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* The table to map configuration register values
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* to sense resistor values
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*/
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static const int micro_ohm_rsense[] = {
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200, 250, 300, 330, 400, 470, 500, 600,
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670, 700, 750, 800, 900, 1000, 1100, 1200,
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1250, 1300, 1400, 1500, 1600, 1700, 1800, 1900,
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2000, 2100, 2200, 2300, 2400, 2500, 2600, 2700,
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2800, 3000, 3100, 3200, 3300, 3400, 3500, 3600,
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3700, 3800, 3900, 4000, 4100, 4200, 4300, 4400,
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4500, 4600, 4700, 4800, 4900, 5000, 5500, 6000,
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6500, 7000, 7500, 8000, 8500, 9000, 9500, 10000
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};
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static struct pmbus_driver_info xdp710_info = {
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.pages = 1,
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.format[PSC_VOLTAGE_IN] = direct,
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.format[PSC_VOLTAGE_OUT] = direct,
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.format[PSC_CURRENT_OUT] = direct,
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.format[PSC_POWER] = direct,
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.format[PSC_TEMPERATURE] = direct,
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.m[PSC_VOLTAGE_IN] = 4653,
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.b[PSC_VOLTAGE_IN] = 0,
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.R[PSC_VOLTAGE_IN] = -2,
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.m[PSC_VOLTAGE_OUT] = 4653,
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.b[PSC_VOLTAGE_OUT] = 0,
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.R[PSC_VOLTAGE_OUT] = -2,
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.m[PSC_CURRENT_OUT] = 23165,
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.b[PSC_CURRENT_OUT] = 0,
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.R[PSC_CURRENT_OUT] = -2,
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.m[PSC_POWER] = 4211,
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.b[PSC_POWER] = 0,
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.R[PSC_POWER] = -2,
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.m[PSC_TEMPERATURE] = 52,
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.b[PSC_TEMPERATURE] = 14321,
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.R[PSC_TEMPERATURE] = -1,
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.func[0] =
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PMBUS_HAVE_VIN | PMBUS_HAVE_VOUT | PMBUS_HAVE_PIN |
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PMBUS_HAVE_TEMP | PMBUS_HAVE_IOUT |
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PMBUS_HAVE_STATUS_INPUT | PMBUS_HAVE_STATUS_TEMP,
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};
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static int xdp710_probe(struct i2c_client *client)
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{
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struct pmbus_driver_info *info;
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u8 cs_rng;
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u8 vtlm_rng;
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int rsense;
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int ret;
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int m = 0;
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info = devm_kmemdup(&client->dev, &xdp710_info, sizeof(*info),
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GFP_KERNEL);
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if (!info)
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return -ENOMEM;
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ret = i2c_smbus_read_word_data(client, XDP710_CS_RNG);
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if (ret < 0) {
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dev_err(&client->dev, "Can't get CS_RNG");
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return ret;
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}
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cs_rng = (ret >> 6) & GENMASK(1, 0);
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ret = i2c_smbus_read_word_data(client, XDP710_V_SNS_CFG);
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if (ret < 0) {
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dev_err(&client->dev, "Can't get V_SNS_CFG");
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return ret;
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}
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vtlm_rng = ret & GENMASK(1, 0);
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ret = i2c_smbus_read_word_data(client, XDP710_REG_CFG);
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if (ret < 0) {
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dev_err(&client->dev, "Can't get REG_CFG");
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return ret;
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}
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ret &= GENMASK(5, 0);
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rsense = micro_ohm_rsense[ret];
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info->m[PSC_VOLTAGE_IN] <<= vtlm_rng;
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info->m[PSC_VOLTAGE_OUT] <<= vtlm_rng;
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m = info->m[PSC_CURRENT_OUT];
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info->m[PSC_CURRENT_OUT] = DIV_ROUND_CLOSEST(m * rsense >> cs_rng, 1000);
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m = info->m[PSC_POWER];
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info->m[PSC_POWER] = DIV_ROUND_CLOSEST(m * rsense >> cs_rng, 1000);
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return pmbus_do_probe(client, info);
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}
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static const struct of_device_id xdp710_of_match[] = {
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{ .compatible = "infineon,xdp710" },
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{}
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};
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static const struct i2c_device_id xdp710_id[] = {
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{"xdp710", 0},
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{ }
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};
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MODULE_DEVICE_TABLE(i2c, xdp710_id);
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static struct i2c_driver xdp710_driver = {
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.driver = {
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.name = "xdp710",
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.of_match_table = xdp710_of_match,
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},
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.probe = xdp710_probe,
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.id_table = xdp710_id,
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};
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module_i2c_driver(xdp710_driver);
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MODULE_AUTHOR("Peter Yin <peter.yin@quantatw.com>");
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MODULE_DESCRIPTION("PMBus driver for XDP710 HSC");
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MODULE_LICENSE("GPL");
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MODULE_IMPORT_NS(PMBUS);
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