On Thu, Apr 25, 2024 at 11:36:01PM +0800, Peter Yin wrote: > Add support for Infineon XDP710.This is a Hot-Swap Controller. > > Signed-off-by: Peter Yin <peteryin.openbmc@xxxxxxxxx> Applied, after "s/microOhmRsense/micro_ohm_rsense/g" Guenter > --- > Documentation/hwmon/index.rst | 1 + > Documentation/hwmon/xdp710.rst | 83 +++++++++++++++++++++ > drivers/hwmon/pmbus/Kconfig | 9 +++ > drivers/hwmon/pmbus/Makefile | 1 + > drivers/hwmon/pmbus/xdp710.c | 132 +++++++++++++++++++++++++++++++++ > 5 files changed, 226 insertions(+) > create mode 100644 Documentation/hwmon/xdp710.rst > create mode 100644 drivers/hwmon/pmbus/xdp710.c > > diff --git a/Documentation/hwmon/index.rst b/Documentation/hwmon/index.rst > index 1ca7a4fe1f8f..b2546925fb15 100644 > --- a/Documentation/hwmon/index.rst > +++ b/Documentation/hwmon/index.rst > @@ -250,6 +250,7 @@ Hardware Monitoring Kernel Drivers > wm831x > wm8350 > xgene-hwmon > + xdp710 > xdpe12284 > xdpe152c4 > zl6100 > diff --git a/Documentation/hwmon/xdp710.rst b/Documentation/hwmon/xdp710.rst > new file mode 100644 > index 000000000000..083891f27818 > --- /dev/null > +++ b/Documentation/hwmon/xdp710.rst > @@ -0,0 +1,83 @@ > +.. SPDX-License-Identifier: GPL-2.0 > + > +Kernel driver xdp710 > +==================== > + > +Supported chips: > + > + * Infineon XDP710 > + > + Prefix: 'xdp710' > + > + * Datasheet > + > + Publicly available at the Infineon website : https://www.infineon.com/dgdl/Infineon-XDP710-001-DataSheet-v01_00-EN.pdf?fileId=8ac78c8c8412f8d301848a5316290b97 > + > +Author: > + > + Peter Yin <peteryin.openbmc@xxxxxxxxx> > + > +Description > +----------- > + > +This driver implements support for Infineon XDP710 Hot-Swap Controller. > + > +Device compliant with: > + > +- PMBus rev 1.3 interface. > + > +Device supports direct and linear format for reading input voltage, > +output voltage, output current, input power and temperature. > + > +The driver exports the following attributes via the 'sysfs' files > +for input voltage: > + > +**in1_input** > + > +**in1_label** > + > +**in1_max** > + > +**in1_max_alarm** > + > +**in1_min** > + > +**in1_min_alarm** > + > +The driver provides the following attributes for output voltage: > + > +**in2_input** > + > +**in2_label** > + > +**in2_alarm** > + > +The driver provides the following attributes for output current: > + > +**curr1_input** > + > +**curr1_label** > + > +**curr1_alarm** > + > +**curr1_max** > + > +The driver provides the following attributes for input power: > + > +**power1_input** > + > +**power1_label** > + > +**power1_alarm** > + > +The driver provides the following attributes for temperature: > + > +**temp1_input** > + > +**temp1_max** > + > +**temp1_max_alarm** > + > +**temp1_crit** > + > +**temp1_crit_alarm** > diff --git a/drivers/hwmon/pmbus/Kconfig b/drivers/hwmon/pmbus/Kconfig > index 557ae0c414b0..c775128c2ea7 100644 > --- a/drivers/hwmon/pmbus/Kconfig > +++ b/drivers/hwmon/pmbus/Kconfig > @@ -511,6 +511,15 @@ config SENSORS_UCD9200 > This driver can also be built as a module. If so, the module will > be called ucd9200. > > +config SENSORS_XDP710 > + tristate "Infineon XDP710 family" > + help > + If you say yes here you get hardware monitoring support for Infineon > + XDP710. > + > + This driver can also be built as a module. If so, the module will > + be called xdp710. > + > config SENSORS_XDPE152 > tristate "Infineon XDPE152 family" > help > diff --git a/drivers/hwmon/pmbus/Makefile b/drivers/hwmon/pmbus/Makefile > index f14ecf03ad77..4fe630793721 100644 > --- a/drivers/hwmon/pmbus/Makefile > +++ b/drivers/hwmon/pmbus/Makefile > @@ -51,6 +51,7 @@ obj-$(CONFIG_SENSORS_TPS53679) += tps53679.o > obj-$(CONFIG_SENSORS_TPS546D24) += tps546d24.o > obj-$(CONFIG_SENSORS_UCD9000) += ucd9000.o > obj-$(CONFIG_SENSORS_UCD9200) += ucd9200.o > +obj-$(CONFIG_SENSORS_XDP710) += xdp710.o > obj-$(CONFIG_SENSORS_XDPE122) += xdpe12284.o > obj-$(CONFIG_SENSORS_XDPE152) += xdpe152c4.o > obj-$(CONFIG_SENSORS_ZL6100) += zl6100.o > diff --git a/drivers/hwmon/pmbus/xdp710.c b/drivers/hwmon/pmbus/xdp710.c > new file mode 100644 > index 000000000000..a00f79cda5e5 > --- /dev/null > +++ b/drivers/hwmon/pmbus/xdp710.c > @@ -0,0 +1,132 @@ > +// 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 > + */ > +const int microOhmRsense[] = { > + 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 = microOhmRsense[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", 0}, > + { } > +}; > +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@xxxxxxxxxxxx>"); > +MODULE_DESCRIPTION("PMBus driver for XDP710 HSC"); > +MODULE_LICENSE("GPL"); > +MODULE_IMPORT_NS(PMBUS);
