hwmon: (pmbus) add support for 2nd Gen Renesas digital multiphase
Extend the isl68137 driver to provide support for 2nd generation Renesas digital multiphase voltage regulators. Signed-off-by: Grant Peltier <grantpeltier93@gmail.com> Link: https://lore.kernel.org/r/62c000adf0108aeb65d3f275f28eb26b690384aa.1584720563.git.grantpeltier93@gmail.com [groeck: Adjusted for new PMBus API function parameters] Signed-off-by: Guenter Roeck <linux@roeck-us.net>
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@ -92,10 +92,10 @@ config SENSORS_IRPS5401
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be called irps5401.
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be called irps5401.
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config SENSORS_ISL68137
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config SENSORS_ISL68137
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tristate "Intersil ISL68137"
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tristate "Renesas Digital Multiphase Voltage Regulators"
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help
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help
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If you say yes here you get hardware monitoring support for Intersil
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If you say yes here you get hardware monitoring support for Renesas
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ISL68137.
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digital multiphase voltage regulators.
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This driver can also be built as a module. If so, the module will
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This driver can also be built as a module. If so, the module will
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be called isl68137.
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be called isl68137.
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@ -1,8 +1,9 @@
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// SPDX-License-Identifier: GPL-2.0+
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// SPDX-License-Identifier: GPL-2.0+
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/*
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/*
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* Hardware monitoring driver for Intersil ISL68137
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* Hardware monitoring driver for Renesas Digital Multiphase Voltage Regulators
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*
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*
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* Copyright (c) 2017 Google Inc
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* Copyright (c) 2017 Google Inc
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* Copyright (c) 2020 Renesas Electronics America
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*
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*
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*/
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*/
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@ -14,9 +15,19 @@
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#include <linux/module.h>
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#include <linux/module.h>
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#include <linux/string.h>
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#include <linux/string.h>
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#include <linux/sysfs.h>
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#include <linux/sysfs.h>
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#include "pmbus.h"
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#include "pmbus.h"
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#define ISL68137_VOUT_AVS 0x30
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#define ISL68137_VOUT_AVS 0x30
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#define RAA_DMPVR2_READ_VMON 0xc8
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enum versions {
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isl68137,
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raa_dmpvr2_1rail,
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raa_dmpvr2_2rail,
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raa_dmpvr2_3rail,
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raa_dmpvr2_hv,
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};
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static ssize_t isl68137_avs_enable_show_page(struct i2c_client *client,
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static ssize_t isl68137_avs_enable_show_page(struct i2c_client *client,
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int page,
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int page,
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@ -99,13 +110,31 @@ static const struct attribute_group enable_group = {
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.attrs = enable_attrs,
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.attrs = enable_attrs,
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};
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};
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static const struct attribute_group *attribute_groups[] = {
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static const struct attribute_group *isl68137_attribute_groups[] = {
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&enable_group,
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&enable_group,
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NULL,
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NULL,
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};
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};
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static struct pmbus_driver_info isl68137_info = {
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static int raa_dmpvr2_read_word_data(struct i2c_client *client, int page,
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.pages = 2,
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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,
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RAA_DMPVR2_READ_VMON);
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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 raa_dmpvr_info = {
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.pages = 3,
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.format[PSC_VOLTAGE_IN] = direct,
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.format[PSC_VOLTAGE_IN] = direct,
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.format[PSC_VOLTAGE_OUT] = direct,
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.format[PSC_VOLTAGE_OUT] = direct,
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.format[PSC_CURRENT_IN] = direct,
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.format[PSC_CURRENT_IN] = direct,
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@ -114,7 +143,7 @@ static struct pmbus_driver_info isl68137_info = {
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.format[PSC_TEMPERATURE] = direct,
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.format[PSC_TEMPERATURE] = direct,
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.m[PSC_VOLTAGE_IN] = 1,
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.m[PSC_VOLTAGE_IN] = 1,
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.b[PSC_VOLTAGE_IN] = 0,
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.b[PSC_VOLTAGE_IN] = 0,
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.R[PSC_VOLTAGE_IN] = 3,
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.R[PSC_VOLTAGE_IN] = 2,
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.m[PSC_VOLTAGE_OUT] = 1,
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.m[PSC_VOLTAGE_OUT] = 1,
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.b[PSC_VOLTAGE_OUT] = 0,
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.b[PSC_VOLTAGE_OUT] = 0,
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.R[PSC_VOLTAGE_OUT] = 3,
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.R[PSC_VOLTAGE_OUT] = 3,
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@ -134,24 +163,76 @@ static struct pmbus_driver_info isl68137_info = {
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| PMBUS_HAVE_STATUS_INPUT | PMBUS_HAVE_TEMP | PMBUS_HAVE_TEMP2
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| PMBUS_HAVE_STATUS_INPUT | PMBUS_HAVE_TEMP | PMBUS_HAVE_TEMP2
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| PMBUS_HAVE_TEMP3 | PMBUS_HAVE_STATUS_TEMP
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| PMBUS_HAVE_TEMP3 | PMBUS_HAVE_STATUS_TEMP
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| PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT
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| PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT
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| PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT | PMBUS_HAVE_POUT,
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| PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT | PMBUS_HAVE_POUT
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.func[1] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT
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| PMBUS_HAVE_VMON,
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| PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT | PMBUS_HAVE_POUT,
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.func[1] = PMBUS_HAVE_IIN | PMBUS_HAVE_PIN | PMBUS_HAVE_STATUS_INPUT
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.groups = attribute_groups,
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| PMBUS_HAVE_TEMP | PMBUS_HAVE_TEMP3 | PMBUS_HAVE_STATUS_TEMP
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| PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT | PMBUS_HAVE_IOUT
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| PMBUS_HAVE_STATUS_IOUT | PMBUS_HAVE_POUT,
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.func[2] = PMBUS_HAVE_IIN | PMBUS_HAVE_PIN | PMBUS_HAVE_STATUS_INPUT
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| PMBUS_HAVE_TEMP | PMBUS_HAVE_TEMP3 | PMBUS_HAVE_STATUS_TEMP
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| PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT | PMBUS_HAVE_IOUT
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| PMBUS_HAVE_STATUS_IOUT | PMBUS_HAVE_POUT,
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};
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};
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static int isl68137_probe(struct i2c_client *client,
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static int isl68137_probe(struct i2c_client *client,
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const struct i2c_device_id *id)
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const struct i2c_device_id *id)
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{
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{
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return pmbus_do_probe(client, id, &isl68137_info);
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struct pmbus_driver_info *info;
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info = devm_kzalloc(&client->dev, sizeof(*info), GFP_KERNEL);
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if (!info)
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return -ENOMEM;
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memcpy(info, &raa_dmpvr_info, sizeof(*info));
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switch (id->driver_data) {
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case isl68137:
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info->pages = 2;
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info->R[PSC_VOLTAGE_IN] = 3;
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info->func[0] &= ~PMBUS_HAVE_VMON;
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info->func[1] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT
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| PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT
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| PMBUS_HAVE_POUT;
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info->groups = isl68137_attribute_groups;
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break;
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case raa_dmpvr2_1rail:
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info->pages = 1;
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info->read_word_data = raa_dmpvr2_read_word_data;
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break;
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case raa_dmpvr2_2rail:
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info->pages = 2;
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info->read_word_data = raa_dmpvr2_read_word_data;
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break;
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case raa_dmpvr2_3rail:
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info->read_word_data = raa_dmpvr2_read_word_data;
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break;
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case raa_dmpvr2_hv:
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info->pages = 1;
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info->R[PSC_VOLTAGE_IN] = 1;
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info->m[PSC_VOLTAGE_OUT] = 2;
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info->R[PSC_VOLTAGE_OUT] = 2;
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info->m[PSC_CURRENT_IN] = 2;
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info->m[PSC_POWER] = 2;
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info->R[PSC_POWER] = -1;
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info->read_word_data = raa_dmpvr2_read_word_data;
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break;
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default:
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return -ENODEV;
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}
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}
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static const struct i2c_device_id isl68137_id[] = {
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return pmbus_do_probe(client, id, info);
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{"isl68137", 0},
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}
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static const struct i2c_device_id raa_dmpvr_id[] = {
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{"isl68137", isl68137},
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{"raa_dmpvr2_1rail", raa_dmpvr2_1rail},
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{"raa_dmpvr2_2rail", raa_dmpvr2_2rail},
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{"raa_dmpvr2_3rail", raa_dmpvr2_3rail},
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{"raa_dmpvr2_hv", raa_dmpvr2_hv},
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{}
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{}
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};
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};
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MODULE_DEVICE_TABLE(i2c, isl68137_id);
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MODULE_DEVICE_TABLE(i2c, raa_dmpvr_id);
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/* This is the driver that will be inserted */
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/* This is the driver that will be inserted */
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static struct i2c_driver isl68137_driver = {
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static struct i2c_driver isl68137_driver = {
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@ -160,11 +241,11 @@ static struct i2c_driver isl68137_driver = {
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},
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},
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.probe = isl68137_probe,
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.probe = isl68137_probe,
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.remove = pmbus_do_remove,
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.remove = pmbus_do_remove,
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.id_table = isl68137_id,
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.id_table = raa_dmpvr_id,
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};
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};
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module_i2c_driver(isl68137_driver);
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module_i2c_driver(isl68137_driver);
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MODULE_AUTHOR("Maxim Sloyko <maxims@google.com>");
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MODULE_AUTHOR("Maxim Sloyko <maxims@google.com>");
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MODULE_DESCRIPTION("PMBus driver for Intersil ISL68137");
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MODULE_DESCRIPTION("PMBus driver for Renesas digital multiphase voltage regulators");
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MODULE_LICENSE("GPL");
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MODULE_LICENSE("GPL");
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