Merge remote-tracking branch 'remotes/philmd/tags/pmbus-20220308' into staging

I²C / SMBus / PMBus patches

- Add some Renesas models
- Add Titus Rwantare to MAINTAINERS

# gpg: Signature made Tue 08 Mar 2022 18:11:46 GMT
# gpg:                using RSA key FAABE75E12917221DCFD6BB2E3E32C2CDEADC0DE
# gpg: Good signature from "Philippe Mathieu-Daudé (F4BUG) <f4bug@amsat.org>" [unknown]
# gpg: WARNING: This key is not certified with a trusted signature!
# gpg:          There is no indication that the signature belongs to the owner.
# Primary key fingerprint: FAAB E75E 1291 7221 DCFD  6BB2 E3E3 2C2C DEAD C0DE

* remotes/philmd/tags/pmbus-20220308:
  hw/sensor: add Renesas raa228000 device
  hw/sensor: add Renesas raa229004 PMBus device
  hw/sensor: add Intersil ISL69260 device model
  hw/i2c: Added linear mode translation for pmbus devices
  hw/i2c: pmbus: update MAINTAINERS
  hw/i2c: pmbus: refactor uint handling
  hw/i2c: pmbus: add PEC unsupported warning
  hw/i2c: pmbus: fix error returns and guard against out of range accesses
  hw/i2c: pmbus: add registers

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

5 files changed, 384 insertions, 13 deletions

diff --git a/hw/arm/Kconfig b/hw/arm/Kconfig
index 6945330030..97f3b38019 100644
--- a/hw/arm/Kconfig
+++ b/hw/arm/Kconfig
@@ -400,6 +400,7 @@ config NPCM7XX
     select SMBUS
     select AT24C  # EEPROM
     select MAX34451
+    select ISL_PMBUS_VR
     select PL310  # cache controller
     select PMBUS
     select SERIAL
diff --git a/hw/i2c/pmbus_device.c b/hw/i2c/pmbus_device.c
index 24f8f522d9..62885fa6a1 100644
--- a/hw/i2c/pmbus_device.c
+++ b/hw/i2c/pmbus_device.c
@@ -28,6 +28,24 @@ uint32_t pmbus_direct_mode2data(PMBusCoefficients c, uint16_t value)
     return x;
 }
 
+uint16_t pmbus_data2linear_mode(uint16_t value, int exp)
+{
+    /* L = D * 2^(-e) */
+    if (exp < 0) {
+        return value << (-exp);
+    }
+    return value >> exp;
+}
+
+uint16_t pmbus_linear_mode2data(uint16_t value, int exp)
+{
+    /* D = L * 2^e */
+    if (exp < 0) {
+        return value >> (-exp);
+    }
+    return value << exp;
+}
+
 void pmbus_send(PMBusDevice *pmdev, const uint8_t *data, uint16_t len)
 {
     if (pmdev->out_buf_len + len > SMBUS_DATA_MAX_LEN) {
@@ -89,16 +107,16 @@ void pmbus_send_string(PMBusDevice *pmdev, const char *data)
 }
 
 
-static uint64_t pmbus_receive_uint(const uint8_t *buf, uint8_t len)
+static uint64_t pmbus_receive_uint(PMBusDevice *pmdev)
 {
     uint64_t ret = 0;
 
     /* Exclude command code from return value */
-    buf++;
-    len--;
+    pmdev->in_buf++;
+    pmdev->in_buf_len--;
 
-    for (int i = len - 1; i >= 0; i--) {
-        ret = ret << 8 | buf[i];
+    for (int i = pmdev->in_buf_len - 1; i >= 0; i--) {
+        ret = ret << 8 | pmdev->in_buf[i];
     }
     return ret;
 }
@@ -110,7 +128,7 @@ uint8_t pmbus_receive8(PMBusDevice *pmdev)
                       "%s: length mismatch. Expected 1 byte, got %d bytes\n",
                       __func__, pmdev->in_buf_len - 1);
     }
-    return pmbus_receive_uint(pmdev->in_buf, pmdev->in_buf_len);
+    return pmbus_receive_uint(pmdev);
 }
 
 uint16_t pmbus_receive16(PMBusDevice *pmdev)
@@ -120,7 +138,7 @@ uint16_t pmbus_receive16(PMBusDevice *pmdev)
                       "%s: length mismatch. Expected 2 bytes, got %d bytes\n",
                       __func__, pmdev->in_buf_len - 1);
     }
-    return pmbus_receive_uint(pmdev->in_buf, pmdev->in_buf_len);
+    return pmbus_receive_uint(pmdev);
 }
 
 uint32_t pmbus_receive32(PMBusDevice *pmdev)
@@ -130,7 +148,7 @@ uint32_t pmbus_receive32(PMBusDevice *pmdev)
                       "%s: length mismatch. Expected 4 bytes, got %d bytes\n",
                       __func__, pmdev->in_buf_len - 1);
     }
-    return pmbus_receive_uint(pmdev->in_buf, pmdev->in_buf_len);
+    return pmbus_receive_uint(pmdev);
 }
 
 uint64_t pmbus_receive64(PMBusDevice *pmdev)
@@ -140,7 +158,7 @@ uint64_t pmbus_receive64(PMBusDevice *pmdev)
                       "%s: length mismatch. Expected 8 bytes, got %d bytes\n",
                       __func__, pmdev->in_buf_len - 1);
     }
-    return pmbus_receive_uint(pmdev->in_buf, pmdev->in_buf_len);
+    return pmbus_receive_uint(pmdev);
 }
 
 static uint8_t pmbus_out_buf_pop(PMBusDevice *pmdev)
@@ -149,7 +167,7 @@ static uint8_t pmbus_out_buf_pop(PMBusDevice *pmdev)
         qemu_log_mask(LOG_GUEST_ERROR,
                       "%s: tried to read from empty buffer",
                       __func__);
-        return 0xFF;
+        return PMBUS_ERR_BYTE;
     }
     uint8_t data = pmdev->out_buf[pmdev->out_buf_len - 1];
     pmdev->out_buf_len--;
@@ -243,18 +261,47 @@ void pmbus_check_limits(PMBusDevice *pmdev)
     }
 }
 
+/* assert the status_cml error upon receipt of malformed command */
+static void pmbus_cml_error(PMBusDevice *pmdev)
+{
+    for (int i = 0; i < pmdev->num_pages; i++) {
+        pmdev->pages[i].status_word |= PMBUS_STATUS_CML;
+        pmdev->pages[i].status_cml |= PB_CML_FAULT_INVALID_CMD;
+    }
+}
+
 static uint8_t pmbus_receive_byte(SMBusDevice *smd)
 {
     PMBusDevice *pmdev = PMBUS_DEVICE(smd);
     PMBusDeviceClass *pmdc = PMBUS_DEVICE_GET_CLASS(pmdev);
-    uint8_t ret = 0xFF;
-    uint8_t index = pmdev->page;
+    uint8_t ret = PMBUS_ERR_BYTE;
+    uint8_t index;
 
     if (pmdev->out_buf_len != 0) {
         ret = pmbus_out_buf_pop(pmdev);
         return ret;
     }
 
+    /*
+     * Reading from all pages will return the value from page 0,
+     * this is unspecified behaviour in general.
+     */
+    if (pmdev->page == PB_ALL_PAGES) {
+        index = 0;
+        qemu_log_mask(LOG_GUEST_ERROR,
+                      "%s: tried to read from all pages\n",
+                      __func__);
+        pmbus_cml_error(pmdev);
+    } else if (pmdev->page > pmdev->num_pages - 1) {
+        qemu_log_mask(LOG_GUEST_ERROR,
+                      "%s: page %d is out of range\n",
+                      __func__, pmdev->page);
+        pmbus_cml_error(pmdev);
+        return PMBUS_ERR_BYTE;
+    } else {
+        index = pmdev->page;
+    }
+
     switch (pmdev->code) {
     case PMBUS_PAGE:
         pmbus_send8(pmdev, pmdev->page);
@@ -278,6 +325,11 @@ static uint8_t pmbus_receive_byte(SMBusDevice *smd)
 
     case PMBUS_CAPABILITY:
         pmbus_send8(pmdev, pmdev->capability);
+        if (pmdev->capability & BIT(7)) {
+            qemu_log_mask(LOG_UNIMP,
+                          "%s: PEC is enabled but not yet supported.\n",
+                          __func__);
+        }
         break;
 
     case PMBUS_VOUT_MODE:                 /* R/W byte */
@@ -368,6 +420,14 @@ static uint8_t pmbus_receive_byte(SMBusDevice *smd)
         }
         break;
 
+    case PMBUS_VOUT_MIN:        /* R/W word */
+        if (pmdev->pages[index].page_flags & PB_HAS_VOUT_RATING) {
+            pmbus_send16(pmdev, pmdev->pages[index].vout_min);
+        } else {
+            goto passthough;
+        }
+        break;
+
     /* TODO: implement coefficients support */
 
     case PMBUS_POUT_MAX:                  /* R/W word */
@@ -708,6 +768,10 @@ static uint8_t pmbus_receive_byte(SMBusDevice *smd)
         pmbus_send8(pmdev, pmdev->pages[index].status_other);
         break;
 
+    case PMBUS_STATUS_MFR_SPECIFIC:       /* R/W byte */
+        pmbus_send8(pmdev, pmdev->pages[index].status_mfr_specific);
+        break;
+
     case PMBUS_READ_EIN:                  /* Read-Only block 5 bytes */
         if (pmdev->pages[index].page_flags & PB_HAS_EIN) {
             pmbus_send(pmdev, pmdev->pages[index].read_ein, 5);
@@ -1007,7 +1071,7 @@ static int pmbus_write_data(SMBusDevice *smd, uint8_t *buf, uint8_t len)
 
     if (len == 0) {
         qemu_log_mask(LOG_GUEST_ERROR, "%s: writing empty data\n", __func__);
-        return -1;
+        return PMBUS_ERR_BYTE;
     }
 
     if (!pmdev->pages) { /* allocate memory for pages on first use */
@@ -1026,6 +1090,7 @@ static int pmbus_write_data(SMBusDevice *smd, uint8_t *buf, uint8_t len)
         pmdev->page = pmbus_receive8(pmdev);
         return 0;
     }
+
     /* loop through all the pages when 0xFF is received */
     if (pmdev->page == PB_ALL_PAGES) {
         for (int i = 0; i < pmdev->num_pages; i++) {
@@ -1036,6 +1101,15 @@ static int pmbus_write_data(SMBusDevice *smd, uint8_t *buf, uint8_t len)
         return 0;
     }
 
+    if (pmdev->page > pmdev->num_pages - 1) {
+        qemu_log_mask(LOG_GUEST_ERROR,
+                        "%s: page %u is out of range\n",
+                        __func__, pmdev->page);
+        pmdev->page = 0; /* undefined behaviour - reset to page 0 */
+        pmbus_cml_error(pmdev);
+        return PMBUS_ERR_BYTE;
+    }
+
     index = pmdev->page;
 
     switch (pmdev->code) {
@@ -1149,6 +1223,14 @@ static int pmbus_write_data(SMBusDevice *smd, uint8_t *buf, uint8_t len)
         }
         break;
 
+    case PMBUS_VOUT_MIN:                  /* R/W word */
+        if (pmdev->pages[index].page_flags & PB_HAS_VOUT_RATING) {
+            pmdev->pages[index].vout_min = pmbus_receive16(pmdev);
+        } else {
+            goto passthrough;
+        }
+        break;
+
     case PMBUS_POUT_MAX:                  /* R/W word */
         if (pmdev->pages[index].page_flags & PB_HAS_VOUT) {
             pmdev->pages[index].pout_max = pmbus_receive16(pmdev);
@@ -1482,6 +1564,10 @@ static int pmbus_write_data(SMBusDevice *smd, uint8_t *buf, uint8_t len)
         pmdev->pages[index].status_other = pmbus_receive8(pmdev);
         break;
 
+    case PMBUS_STATUS_MFR_SPECIFIC:        /* R/W byte */
+        pmdev->pages[index].status_mfr_specific = pmbus_receive8(pmdev);
+        break;
+
     case PMBUS_PAGE_PLUS_READ:            /* Block Read-only */
     case PMBUS_CAPABILITY:                /* Read-Only byte */
     case PMBUS_COEFFICIENTS:              /* Read-only block 5 bytes */
diff --git a/hw/sensor/Kconfig b/hw/sensor/Kconfig
index 215944decc..df392e7869 100644
--- a/hw/sensor/Kconfig
+++ b/hw/sensor/Kconfig
@@ -30,3 +30,7 @@ config LSM303DLHC_MAG
     bool
     depends on I2C
     default y if I2C_DEVICES
+
+config ISL_PMBUS_VR
+    bool
+    depends on PMBUS
diff --git a/hw/sensor/isl_pmbus_vr.c b/hw/sensor/isl_pmbus_vr.c
new file mode 100644
index 0000000000..e11e028884
--- /dev/null
+++ b/hw/sensor/isl_pmbus_vr.c
@@ -0,0 +1,279 @@
+/*
+ * PMBus device for Renesas Digital Multiphase Voltage Regulators
+ *
+ * Copyright 2021 Google LLC
+ *
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ */
+
+#include "qemu/osdep.h"
+#include "hw/sensor/isl_pmbus_vr.h"
+#include "hw/qdev-properties.h"
+#include "qapi/visitor.h"
+#include "qemu/log.h"
+#include "qemu/module.h"
+
+static uint8_t isl_pmbus_vr_read_byte(PMBusDevice *pmdev)
+{
+    qemu_log_mask(LOG_GUEST_ERROR,
+                  "%s: reading from unsupported register: 0x%02x\n",
+                  __func__, pmdev->code);
+    return PMBUS_ERR_BYTE;
+}
+
+static int isl_pmbus_vr_write_data(PMBusDevice *pmdev, const uint8_t *buf,
+                                   uint8_t len)
+{
+    qemu_log_mask(LOG_GUEST_ERROR,
+                  "%s: write to unsupported register: 0x%02x\n",
+                  __func__, pmdev->code);
+    return PMBUS_ERR_BYTE;
+}
+
+/* TODO: Implement coefficients support in pmbus_device.c for qmp */
+static void isl_pmbus_vr_get(Object *obj, Visitor *v, const char *name,
+                             void *opaque, Error **errp)
+{
+    visit_type_uint16(v, name, (uint16_t *)opaque, errp);
+}
+
+static void isl_pmbus_vr_set(Object *obj, Visitor *v, const char *name,
+                             void *opaque, Error **errp)
+{
+    PMBusDevice *pmdev = PMBUS_DEVICE(obj);
+    uint16_t *internal = opaque;
+    uint16_t value;
+    if (!visit_type_uint16(v, name, &value, errp)) {
+        return;
+    }
+
+    *internal = value;
+    pmbus_check_limits(pmdev);
+}
+
+static void isl_pmbus_vr_exit_reset(Object *obj)
+{
+    PMBusDevice *pmdev = PMBUS_DEVICE(obj);
+
+    pmdev->page = 0;
+    pmdev->capability = ISL_CAPABILITY_DEFAULT;
+    for (int i = 0; i < pmdev->num_pages; i++) {
+        pmdev->pages[i].operation = ISL_OPERATION_DEFAULT;
+        pmdev->pages[i].on_off_config = ISL_ON_OFF_CONFIG_DEFAULT;
+        pmdev->pages[i].vout_mode = ISL_VOUT_MODE_DEFAULT;
+        pmdev->pages[i].vout_command = ISL_VOUT_COMMAND_DEFAULT;
+        pmdev->pages[i].vout_max = ISL_VOUT_MAX_DEFAULT;
+        pmdev->pages[i].vout_margin_high = ISL_VOUT_MARGIN_HIGH_DEFAULT;
+        pmdev->pages[i].vout_margin_low = ISL_VOUT_MARGIN_LOW_DEFAULT;
+        pmdev->pages[i].vout_transition_rate = ISL_VOUT_TRANSITION_RATE_DEFAULT;
+        pmdev->pages[i].vout_ov_fault_limit = ISL_VOUT_OV_FAULT_LIMIT_DEFAULT;
+        pmdev->pages[i].ot_fault_limit = ISL_OT_FAULT_LIMIT_DEFAULT;
+        pmdev->pages[i].ot_warn_limit = ISL_OT_WARN_LIMIT_DEFAULT;
+        pmdev->pages[i].vin_ov_warn_limit = ISL_VIN_OV_WARN_LIMIT_DEFAULT;
+        pmdev->pages[i].vin_uv_warn_limit = ISL_VIN_UV_WARN_LIMIT_DEFAULT;
+        pmdev->pages[i].iin_oc_fault_limit = ISL_IIN_OC_FAULT_LIMIT_DEFAULT;
+        pmdev->pages[i].ton_delay = ISL_TON_DELAY_DEFAULT;
+        pmdev->pages[i].ton_rise = ISL_TON_RISE_DEFAULT;
+        pmdev->pages[i].toff_fall = ISL_TOFF_FALL_DEFAULT;
+        pmdev->pages[i].revision = ISL_REVISION_DEFAULT;
+
+        pmdev->pages[i].read_vout = ISL_READ_VOUT_DEFAULT;
+        pmdev->pages[i].read_iout = ISL_READ_IOUT_DEFAULT;
+        pmdev->pages[i].read_pout = ISL_READ_POUT_DEFAULT;
+        pmdev->pages[i].read_vin = ISL_READ_VIN_DEFAULT;
+        pmdev->pages[i].read_iin = ISL_READ_IIN_DEFAULT;
+        pmdev->pages[i].read_pin = ISL_READ_PIN_DEFAULT;
+        pmdev->pages[i].read_temperature_1 = ISL_READ_TEMP_DEFAULT;
+        pmdev->pages[i].read_temperature_2 = ISL_READ_TEMP_DEFAULT;
+        pmdev->pages[i].read_temperature_3 = ISL_READ_TEMP_DEFAULT;
+    }
+}
+
+/* The raa228000 uses different direct mode coefficents from most isl devices */
+static void raa228000_exit_reset(Object *obj)
+{
+    PMBusDevice *pmdev = PMBUS_DEVICE(obj);
+
+    isl_pmbus_vr_exit_reset(obj);
+
+    pmdev->pages[0].read_iout = 0;
+    pmdev->pages[0].read_pout = 0;
+    pmdev->pages[0].read_vout = 0;
+    pmdev->pages[0].read_vin = 0;
+    pmdev->pages[0].read_iin = 0;
+    pmdev->pages[0].read_pin = 0;
+    pmdev->pages[0].read_temperature_1 = 0;
+    pmdev->pages[0].read_temperature_2 = 0;
+    pmdev->pages[0].read_temperature_3 = 0;
+}
+
+static void isl_pmbus_vr_add_props(Object *obj, uint64_t *flags, uint8_t pages)
+{
+    PMBusDevice *pmdev = PMBUS_DEVICE(obj);
+    for (int i = 0; i < pages; i++) {
+        if (flags[i] & PB_HAS_VIN) {
+            object_property_add(obj, "vin[*]", "uint16",
+                                isl_pmbus_vr_get,
+                                isl_pmbus_vr_set,
+                                NULL, &pmdev->pages[i].read_vin);
+        }
+
+        if (flags[i] & PB_HAS_VOUT) {
+            object_property_add(obj, "vout[*]", "uint16",
+                                isl_pmbus_vr_get,
+                                isl_pmbus_vr_set,
+                                NULL, &pmdev->pages[i].read_vout);
+        }
+
+        if (flags[i] & PB_HAS_IIN) {
+            object_property_add(obj, "iin[*]", "uint16",
+                                isl_pmbus_vr_get,
+                                isl_pmbus_vr_set,
+                                NULL, &pmdev->pages[i].read_iin);
+        }
+
+        if (flags[i] & PB_HAS_IOUT) {
+            object_property_add(obj, "iout[*]", "uint16",
+                                isl_pmbus_vr_get,
+                                isl_pmbus_vr_set,
+                                NULL, &pmdev->pages[i].read_iout);
+        }
+
+        if (flags[i] & PB_HAS_PIN) {
+            object_property_add(obj, "pin[*]", "uint16",
+                                isl_pmbus_vr_get,
+                                isl_pmbus_vr_set,
+                                NULL, &pmdev->pages[i].read_pin);
+        }
+
+        if (flags[i] & PB_HAS_POUT) {
+            object_property_add(obj, "pout[*]", "uint16",
+                                isl_pmbus_vr_get,
+                                isl_pmbus_vr_set,
+                                NULL, &pmdev->pages[i].read_pout);
+        }
+
+        if (flags[i] & PB_HAS_TEMPERATURE) {
+            object_property_add(obj, "temp1[*]", "uint16",
+                                isl_pmbus_vr_get,
+                                isl_pmbus_vr_set,
+                                NULL, &pmdev->pages[i].read_temperature_1);
+        }
+
+        if (flags[i] & PB_HAS_TEMP2) {
+            object_property_add(obj, "temp2[*]", "uint16",
+                                isl_pmbus_vr_get,
+                                isl_pmbus_vr_set,
+                                NULL, &pmdev->pages[i].read_temperature_2);
+        }
+
+        if (flags[i] & PB_HAS_TEMP3) {
+            object_property_add(obj, "temp3[*]", "uint16",
+                                isl_pmbus_vr_get,
+                                isl_pmbus_vr_set,
+                                NULL, &pmdev->pages[i].read_temperature_3);
+        }
+    }
+}
+
+static void raa22xx_init(Object *obj)
+{
+    PMBusDevice *pmdev = PMBUS_DEVICE(obj);
+    uint64_t flags[2];
+
+    flags[0] = PB_HAS_VIN | PB_HAS_VOUT | PB_HAS_VOUT_MODE |
+               PB_HAS_VOUT_RATING | PB_HAS_VOUT_MARGIN | PB_HAS_IIN |
+               PB_HAS_IOUT | PB_HAS_PIN | PB_HAS_POUT | PB_HAS_TEMPERATURE |
+               PB_HAS_TEMP2 | PB_HAS_TEMP3 | PB_HAS_STATUS_MFR_SPECIFIC;
+    flags[1] = PB_HAS_IIN | PB_HAS_PIN | PB_HAS_TEMPERATURE | PB_HAS_TEMP3 |
+               PB_HAS_VOUT | PB_HAS_VOUT_MODE | PB_HAS_VOUT_MARGIN |
+               PB_HAS_VOUT_RATING | PB_HAS_IOUT | PB_HAS_POUT |
+               PB_HAS_STATUS_MFR_SPECIFIC;
+
+    pmbus_page_config(pmdev, 0, flags[0]);
+    pmbus_page_config(pmdev, 1, flags[1]);
+    isl_pmbus_vr_add_props(obj, flags, ARRAY_SIZE(flags));
+}
+
+static void raa228000_init(Object *obj)
+{
+    PMBusDevice *pmdev = PMBUS_DEVICE(obj);
+    uint64_t flags[1];
+
+    flags[0] = PB_HAS_VIN | PB_HAS_VOUT | PB_HAS_VOUT_MODE |
+               PB_HAS_VOUT_RATING | PB_HAS_VOUT_MARGIN | PB_HAS_IIN |
+               PB_HAS_IOUT | PB_HAS_PIN | PB_HAS_POUT | PB_HAS_TEMPERATURE |
+               PB_HAS_TEMP2 | PB_HAS_TEMP3 | PB_HAS_STATUS_MFR_SPECIFIC;
+
+    pmbus_page_config(pmdev, 0, flags[0]);
+    isl_pmbus_vr_add_props(obj, flags, 1);
+}
+
+static void isl_pmbus_vr_class_init(ObjectClass *klass, void *data,
+                                    uint8_t pages)
+{
+    PMBusDeviceClass *k = PMBUS_DEVICE_CLASS(klass);
+    k->write_data = isl_pmbus_vr_write_data;
+    k->receive_byte = isl_pmbus_vr_read_byte;
+    k->device_num_pages = pages;
+}
+
+static void isl69260_class_init(ObjectClass *klass, void *data)
+{
+    ResettableClass *rc = RESETTABLE_CLASS(klass);
+    DeviceClass *dc = DEVICE_CLASS(klass);
+    dc->desc = "Renesas ISL69260 Digital Multiphase Voltage Regulator";
+    rc->phases.exit = isl_pmbus_vr_exit_reset;
+    isl_pmbus_vr_class_init(klass, data, 2);
+}
+
+static void raa228000_class_init(ObjectClass *klass, void *data)
+{
+    ResettableClass *rc = RESETTABLE_CLASS(klass);
+    DeviceClass *dc = DEVICE_CLASS(klass);
+    dc->desc = "Renesas 228000 Digital Multiphase Voltage Regulator";
+    rc->phases.exit = raa228000_exit_reset;
+    isl_pmbus_vr_class_init(klass, data, 1);
+}
+
+static void raa229004_class_init(ObjectClass *klass, void *data)
+{
+    ResettableClass *rc = RESETTABLE_CLASS(klass);
+    DeviceClass *dc = DEVICE_CLASS(klass);
+    dc->desc = "Renesas 229004 Digital Multiphase Voltage Regulator";
+    rc->phases.exit = isl_pmbus_vr_exit_reset;
+    isl_pmbus_vr_class_init(klass, data, 2);
+}
+
+static const TypeInfo isl69260_info = {
+    .name = TYPE_ISL69260,
+    .parent = TYPE_PMBUS_DEVICE,
+    .instance_size = sizeof(ISLState),
+    .instance_init = raa22xx_init,
+    .class_init = isl69260_class_init,
+};
+
+static const TypeInfo raa229004_info = {
+    .name = TYPE_RAA229004,
+    .parent = TYPE_PMBUS_DEVICE,
+    .instance_size = sizeof(ISLState),
+    .instance_init = raa22xx_init,
+    .class_init = raa229004_class_init,
+};
+
+static const TypeInfo raa228000_info = {
+    .name = TYPE_RAA228000,
+    .parent = TYPE_PMBUS_DEVICE,
+    .instance_size = sizeof(ISLState),
+    .instance_init = raa228000_init,
+    .class_init = raa228000_class_init,
+};
+
+static void isl_pmbus_vr_register_types(void)
+{
+    type_register_static(&isl69260_info);
+    type_register_static(&raa228000_info);
+    type_register_static(&raa229004_info);
+}
+
+type_init(isl_pmbus_vr_register_types)
diff --git a/hw/sensor/meson.build b/hw/sensor/meson.build
index d1bba290da..12b6992bc8 100644
--- a/hw/sensor/meson.build
+++ b/hw/sensor/meson.build
@@ -5,3 +5,4 @@ softmmu_ss.add(when: 'CONFIG_EMC141X', if_true: files('emc141x.c'))
 softmmu_ss.add(when: 'CONFIG_ADM1272', if_true: files('adm1272.c'))
 softmmu_ss.add(when: 'CONFIG_MAX34451', if_true: files('max34451.c'))
 softmmu_ss.add(when: 'CONFIG_LSM303DLHC_MAG', if_true: files('lsm303dlhc_mag.c'))
+softmmu_ss.add(when: 'CONFIG_ISL_PMBUS_VR', if_true: files('isl_pmbus_vr.c'))