hwmon: Add driver for STMicroelectronics PM6764 Voltage Regulator
Add the pmbus driver for the STMicroelectronics pm6764 voltage regulator. the output voltage use the MFR_READ_VOUT 0xD4 vout value returned is linear11 Signed-off-by: Charles Hsu <hsu.yungteng@gmail.com> [groeck: Fixed various compile errors; marked pm6764tr_of_match __maybe_unused] Signed-off-by: Guenter Roeck <linux@roeck-us.net>zero-sugar-mainline-defconfig
Charles
Guenter Roeck
parent
daf4fedde6
commit
7537862a90
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@ -146,6 +146,7 @@ Hardware Monitoring Kernel Drivers
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pc87360
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pc87427
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pcf8591
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pm6764tr
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pmbus
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powr1220
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pxe1610
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@ -0,0 +1,32 @@
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.. SPDX-License-Identifier: GPL-2.0-only
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Kernel driver pm6764tr
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======================
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Supported chips:
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* ST PM6764TR
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Prefix: 'pm6764tr'
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Addresses scanned: -
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Datasheet: http://www.st.com/resource/en/data_brief/pm6764.pdf
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Authors:
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<hsu.yungteng@gmail.com>
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Description:
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------------
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This driver supports the STMicroelectronics PM6764TR chip. The PM6764TR is a high
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performance digital controller designed to power Intel’s VR12.5 processors and memories.
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The device utilizes digital technology to implement all control and power management
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functions to provide maximum flexibility and performance. The NVM is embedded to store
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custom configurations. The PM6764TR device features up to 4-phase programmable operation.
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The PM6764TR supports power state transitions featuring VFDE, and programmable DPM
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maintaining the best efficiency over all loading conditions without compromising transient
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response. The device assures fast and independent protection against load overcurrent,
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under/overvoltage and feedback disconnections.
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@ -13900,6 +13900,13 @@ M: Logan Gunthorpe <logang@deltatee.com>
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S: Maintained
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F: drivers/dma/plx_dma.c
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PM6764TR DRIVER
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M: Charles Hsu <hsu.yungteng@gmail.com>
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L: linux-hwmon@vger.kernel.org
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S: Maintained
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F: Documentation/hwmon/pm6764tr.rst
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F: drivers/hwmon/pmbus/pm6764tr.c
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PM-GRAPH UTILITY
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M: "Todd E Brandt" <todd.e.brandt@linux.intel.com>
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L: linux-pm@vger.kernel.org
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@ -220,6 +220,15 @@ config SENSORS_MP2975
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This driver can also be built as a module. If so, the module will
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be called mp2975.
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config SENSORS_PM6764TR
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tristate "ST PM6764TR"
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help
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If you say yes here you get hardware monitoring support for ST
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PM6764TR.
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This driver can also be built as a module. If so, the module will
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be called pm6764tr.
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config SENSORS_PXE1610
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tristate "Infineon PXE1610"
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help
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@ -25,6 +25,7 @@ obj-$(CONFIG_SENSORS_MAX31785) += max31785.o
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obj-$(CONFIG_SENSORS_MAX34440) += max34440.o
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obj-$(CONFIG_SENSORS_MAX8688) += max8688.o
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obj-$(CONFIG_SENSORS_MP2975) += mp2975.o
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obj-$(CONFIG_SENSORS_PM6764TR) += pm6764tr.o
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obj-$(CONFIG_SENSORS_PXE1610) += pxe1610.o
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obj-$(CONFIG_SENSORS_TPS40422) += tps40422.o
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obj-$(CONFIG_SENSORS_TPS53679) += tps53679.o
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@ -0,0 +1,75 @@
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// SPDX-License-Identifier: GPL-2.0+
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/*
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* Hardware monitoring driver for STMicroelectronics digital controller PM6764TR
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*/
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#include <linux/err.h>
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#include <linux/i2c.h>
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#include <linux/init.h>
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/pmbus.h>
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#include "pmbus.h"
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#define PM6764TR_PMBUS_READ_VOUT 0xD4
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static int pm6764tr_read_word_data(struct i2c_client *client, int page, int phase, int reg)
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{
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int ret;
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switch (reg) {
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case PMBUS_VIRT_READ_VMON:
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ret = pmbus_read_word_data(client, page, phase, PM6764TR_PMBUS_READ_VOUT);
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break;
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default:
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ret = -ENODATA;
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break;
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}
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return ret;
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}
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static struct pmbus_driver_info pm6764tr_info = {
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.pages = 1,
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.format[PSC_VOLTAGE_IN] = linear,
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.format[PSC_VOLTAGE_OUT] = vid,
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.format[PSC_TEMPERATURE] = linear,
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.format[PSC_CURRENT_OUT] = linear,
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.format[PSC_POWER] = linear,
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.func[0] = PMBUS_HAVE_VIN | PMBUS_HAVE_IIN | PMBUS_HAVE_PIN |
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PMBUS_HAVE_IOUT | PMBUS_HAVE_POUT | PMBUS_HAVE_VMON |
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PMBUS_HAVE_STATUS_IOUT | PMBUS_HAVE_STATUS_VOUT |
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PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP,
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.read_word_data = pm6764tr_read_word_data,
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};
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static int pm6764tr_probe(struct i2c_client *client)
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{
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return pmbus_do_probe(client, &pm6764tr_info);
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}
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static const struct i2c_device_id pm6764tr_id[] = {
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{"pm6764tr", 0},
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{}
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};
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MODULE_DEVICE_TABLE(i2c, pm6764tr_id);
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static const struct of_device_id __maybe_unused pm6764tr_of_match[] = {
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{.compatible = "st,pm6764tr"},
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{}
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};
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/* This is the driver that will be inserted */
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static struct i2c_driver pm6764tr_driver = {
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.driver = {
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.name = "pm6764tr",
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.of_match_table = of_match_ptr(pm6764tr_of_match),
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},
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.probe_new = pm6764tr_probe,
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.id_table = pm6764tr_id,
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};
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module_i2c_driver(pm6764tr_driver);
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MODULE_AUTHOR("Charles Hsu");
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MODULE_DESCRIPTION("PMBus driver for ST PM6764TR");
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MODULE_LICENSE("GPL");
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