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qemu/hw/sensor/max34451.c
Titus Rwantare 7215456a4f hw/misc: add MAX34451 device 
The MAX34451 is a Maxim power-supply system manager that can monitor up to 16 voltage rails or currents. It also contains a temperature sensor and supports up to four external temperature sensors.

This commit adds support for interfacing with it, and setting limits on the supported sensors.

Reviewed-by: Joel Stanley <joel@jms.id.au>
Reviewed-by: Hao Wu <wuhaotsh@google.com>
Signed-off-by: Titus Rwantare <titusr@google.com>
Message-Id: <20210708172556.1868139-5-titusr@google.com>
[Moved the device to the sensor directory]
Signed-off-by: Corey Minyard <cminyard@mvista.com>
2021-07-08 14:42:00 -05:00

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/*
* Maxim MAX34451 PMBus 16-Channel V/I monitor and 12-Channel Sequencer/Marginer
*
* Copyright 2021 Google LLC
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#include "qemu/osdep.h"
#include "hw/i2c/pmbus_device.h"
#include "hw/irq.h"
#include "migration/vmstate.h"
#include "qapi/error.h"
#include "qapi/visitor.h"
#include "qemu/log.h"
#include "qemu/module.h"
#define TYPE_MAX34451 "max34451"
#define MAX34451(obj) OBJECT_CHECK(MAX34451State, (obj), TYPE_MAX34451)
#define MAX34451_MFR_MODE 0xD1
#define MAX34451_MFR_PSEN_CONFIG 0xD2
#define MAX34451_MFR_VOUT_PEAK 0xD4
#define MAX34451_MFR_IOUT_PEAK 0xD5
#define MAX34451_MFR_TEMPERATURE_PEAK 0xD6
#define MAX34451_MFR_VOUT_MIN 0xD7
#define MAX34451_MFR_NV_LOG_CONFIG 0xD8
#define MAX34451_MFR_FAULT_RESPONSE 0xD9
#define MAX34451_MFR_FAULT_RETRY 0xDA
#define MAX34451_MFR_NV_FAULT_LOG 0xDC
#define MAX34451_MFR_TIME_COUNT 0xDD
#define MAX34451_MFR_MARGIN_CONFIG 0xDF
#define MAX34451_MFR_FW_SERIAL 0xE0
#define MAX34451_MFR_IOUT_AVG 0xE2
#define MAX34451_MFR_CHANNEL_CONFIG 0xE4
#define MAX34451_MFR_TON_SEQ_MAX 0xE6
#define MAX34451_MFR_PWM_CONFIG 0xE7
#define MAX34451_MFR_SEQ_CONFIG 0xE8
#define MAX34451_MFR_STORE_ALL 0xEE
#define MAX34451_MFR_RESTORE_ALL 0xEF
#define MAX34451_MFR_TEMP_SENSOR_CONFIG 0xF0
#define MAX34451_MFR_STORE_SINGLE 0xFC
#define MAX34451_MFR_CRC 0xFE
#define MAX34451_NUM_MARGINED_PSU 12
#define MAX34451_NUM_PWR_DEVICES 16
#define MAX34451_NUM_TEMP_DEVICES 5
#define MAX34451_NUM_PAGES 21
#define DEFAULT_OP_ON 0x80
#define DEFAULT_CAPABILITY 0x20
#define DEFAULT_ON_OFF_CONFIG 0x1a
#define DEFAULT_VOUT_MODE 0x40
#define DEFAULT_TEMPERATURE 2500
#define DEFAULT_SCALE 0x7FFF
#define DEFAULT_OV_LIMIT 0x7FFF
#define DEFAULT_OC_LIMIT 0x7FFF
#define DEFAULT_OT_LIMIT 0x7FFF
#define DEFAULT_VMIN 0x7FFF
#define DEFAULT_TON_FAULT_LIMIT 0xFFFF
#define DEFAULT_CHANNEL_CONFIG 0x20
#define DEFAULT_TEXT 0x3130313031303130
/**
* MAX34451State:
* @code: The command code received
* @page: Each page corresponds to a device monitored by the Max 34451
* The page register determines the available commands depending on device
___________________________________________________________________________
| 0 | Power supply monitored by RS0, controlled by PSEN0, and |
| | margined with PWM0. |
|_______|___________________________________________________________________|
| 1 | Power supply monitored by RS1, controlled by PSEN1, and |
| | margined with PWM1. |
|_______|___________________________________________________________________|
| 2 | Power supply monitored by RS2, controlled by PSEN2, and |
| | margined with PWM2. |
|_______|___________________________________________________________________|
| 3 | Power supply monitored by RS3, controlled by PSEN3, and |
| | margined with PWM3. |
|_______|___________________________________________________________________|
| 4 | Power supply monitored by RS4, controlled by PSEN4, and |
| | margined with PWM4. |
|_______|___________________________________________________________________|
| 5 | Power supply monitored by RS5, controlled by PSEN5, and |
| | margined with PWM5. |
|_______|___________________________________________________________________|
| 6 | Power supply monitored by RS6, controlled by PSEN6, and |
| | margined with PWM6. |
|_______|___________________________________________________________________|
| 7 | Power supply monitored by RS7, controlled by PSEN7, and |
| | margined with PWM7. |
|_______|___________________________________________________________________|
| 8 | Power supply monitored by RS8, controlled by PSEN8, and |
| | optionally margined by OUT0 of external DS4424 at I2C address A0h.|
|_______|___________________________________________________________________|
| 9 | Power supply monitored by RS9, controlled by PSEN9, and |
| | optionally margined by OUT1 of external DS4424 at I2C address A0h.|
|_______|___________________________________________________________________|
| 10 | Power supply monitored by RS10, controlled by PSEN10, and |
| | optionally margined by OUT2 of external DS4424 at I2C address A0h.|
|_______|___________________________________________________________________|
| 11 | Power supply monitored by RS11, controlled by PSEN11, and |
| | optionally margined by OUT3 of external DS4424 at I2C address A0h.|
|_______|___________________________________________________________________|
| 12 | ADC channel 12 (monitors voltage or current) or GPI. |
|_______|___________________________________________________________________|
| 13 | ADC channel 13 (monitors voltage or current) or GPI. |
|_______|___________________________________________________________________|
| 14 | ADC channel 14 (monitors voltage or current) or GPI. |
|_______|___________________________________________________________________|
| 15 | ADC channel 15 (monitors voltage or current) or GPI. |
|_______|___________________________________________________________________|
| 16 | Internal temperature sensor. |
|_______|___________________________________________________________________|
| 17 | External DS75LV temperature sensor with I2C address 90h. |
|_______|___________________________________________________________________|
| 18 | External DS75LV temperature sensor with I2C address 92h. |
|_______|___________________________________________________________________|
| 19 | External DS75LV temperature sensor with I2C address 94h. |
|_______|___________________________________________________________________|
| 20 | External DS75LV temperature sensor with I2C address 96h. |
|_______|___________________________________________________________________|
| 21=E2=80=93254| Reserved. |
|_______|___________________________________________________________________|
| 255 | Applies to all pages. |
|_______|___________________________________________________________________|
*
* @operation: Turn on and off power supplies
* @on_off_config: Configure the power supply on and off transition behaviour
* @write_protect: protect against changes to the device's memory
* @vout_margin_high: the voltage when OPERATION is set to margin high
* @vout_margin_low: the voltage when OPERATION is set to margin low
* @vout_scale: scale ADC reading to actual device reading if different
* @iout_cal_gain: set ratio of the voltage at the ADC input to sensed current
*/
typedef struct MAX34451State {
PMBusDevice parent;
uint16_t power_good_on[MAX34451_NUM_PWR_DEVICES];
uint16_t power_good_off[MAX34451_NUM_PWR_DEVICES];
uint16_t ton_delay[MAX34451_NUM_MARGINED_PSU];
uint16_t ton_max_fault_limit[MAX34451_NUM_MARGINED_PSU];
uint16_t toff_delay[MAX34451_NUM_MARGINED_PSU];
uint8_t status_mfr_specific[MAX34451_NUM_PWR_DEVICES];
/* Manufacturer specific function */
uint64_t mfr_location;
uint64_t mfr_date;
uint64_t mfr_serial;
uint16_t mfr_mode;
uint32_t psen_config[MAX34451_NUM_MARGINED_PSU];
uint16_t vout_peak[MAX34451_NUM_PWR_DEVICES];
uint16_t iout_peak[MAX34451_NUM_PWR_DEVICES];
uint16_t temperature_peak[MAX34451_NUM_TEMP_DEVICES];
uint16_t vout_min[MAX34451_NUM_PWR_DEVICES];
uint16_t nv_log_config;
uint32_t fault_response[MAX34451_NUM_PWR_DEVICES];
uint16_t fault_retry;
uint32_t fault_log;
uint32_t time_count;
uint16_t margin_config[MAX34451_NUM_MARGINED_PSU];
uint16_t fw_serial;
uint16_t iout_avg[MAX34451_NUM_PWR_DEVICES];
uint16_t channel_config[MAX34451_NUM_PWR_DEVICES];
uint16_t ton_seq_max[MAX34451_NUM_MARGINED_PSU];
uint32_t pwm_config[MAX34451_NUM_MARGINED_PSU];
uint32_t seq_config[MAX34451_NUM_MARGINED_PSU];
uint16_t temp_sensor_config[MAX34451_NUM_TEMP_DEVICES];
uint16_t store_single;
uint16_t crc;
} MAX34451State;
static void max34451_check_limits(MAX34451State *s)
{
PMBusDevice *pmdev = PMBUS_DEVICE(s);
pmbus_check_limits(pmdev);
for (int i = 0; i < MAX34451_NUM_PWR_DEVICES; i++) {
if (pmdev->pages[i].read_vout == 0) { /* PSU disabled */
continue;
}
if (pmdev->pages[i].read_vout > s->vout_peak[i]) {
s->vout_peak[i] = pmdev->pages[i].read_vout;
}
if (pmdev->pages[i].read_vout < s->vout_min[i]) {
s->vout_min[i] = pmdev->pages[i].read_vout;
}
if (pmdev->pages[i].read_iout > s->iout_peak[i]) {
s->iout_peak[i] = pmdev->pages[i].read_iout;
}
}
for (int i = 0; i < MAX34451_NUM_TEMP_DEVICES; i++) {
if (pmdev->pages[i + 16].read_temperature_1 > s->temperature_peak[i]) {
s->temperature_peak[i] = pmdev->pages[i + 16].read_temperature_1;
}
}
}
static uint8_t max34451_read_byte(PMBusDevice *pmdev)
{
MAX34451State *s = MAX34451(pmdev);
switch (pmdev->code) {
case PMBUS_POWER_GOOD_ON:
if (pmdev->page < 16) {
pmbus_send16(pmdev, s->power_good_on[pmdev->page]);
}
break;
case PMBUS_POWER_GOOD_OFF:
if (pmdev->page < 16) {
pmbus_send16(pmdev, s->power_good_off[pmdev->page]);
}
break;
case PMBUS_TON_DELAY:
if (pmdev->page < 12) {
pmbus_send16(pmdev, s->ton_delay[pmdev->page]);
}
break;
case PMBUS_TON_MAX_FAULT_LIMIT:
if (pmdev->page < 12) {
pmbus_send16(pmdev, s->ton_max_fault_limit[pmdev->page]);
}
break;
case PMBUS_TOFF_DELAY:
if (pmdev->page < 12) {
pmbus_send16(pmdev, s->toff_delay[pmdev->page]);
}
break;
case PMBUS_STATUS_MFR_SPECIFIC:
if (pmdev->page < 16) {
pmbus_send8(pmdev, s->status_mfr_specific[pmdev->page]);
}
break;
case PMBUS_MFR_ID:
pmbus_send8(pmdev, 0x4d); /* Maxim */
break;
case PMBUS_MFR_MODEL:
pmbus_send8(pmdev, 0x59);
break;
case PMBUS_MFR_LOCATION:
pmbus_send64(pmdev, s->mfr_location);
break;
case PMBUS_MFR_DATE:
pmbus_send64(pmdev, s->mfr_date);
break;
case PMBUS_MFR_SERIAL:
pmbus_send64(pmdev, s->mfr_serial);
break;
case MAX34451_MFR_MODE:
pmbus_send16(pmdev, s->mfr_mode);
break;
case MAX34451_MFR_PSEN_CONFIG:
if (pmdev->page < 12) {
pmbus_send32(pmdev, s->psen_config[pmdev->page]);
}
break;
case MAX34451_MFR_VOUT_PEAK:
if (pmdev->page < 16) {
pmbus_send16(pmdev, s->vout_peak[pmdev->page]);
}
break;
case MAX34451_MFR_IOUT_PEAK:
if (pmdev->page < 16) {
pmbus_send16(pmdev, s->iout_peak[pmdev->page]);
}
break;
case MAX34451_MFR_TEMPERATURE_PEAK:
if (15 < pmdev->page && pmdev->page < 21) {
pmbus_send16(pmdev, s->temperature_peak[pmdev->page % 16]);
} else {
pmbus_send16(pmdev, s->temperature_peak[0]);
}
break;
case MAX34451_MFR_VOUT_MIN:
if (pmdev->page < 16) {
pmbus_send16(pmdev, s->vout_min[pmdev->page]);
}
break;
case MAX34451_MFR_NV_LOG_CONFIG:
pmbus_send16(pmdev, s->nv_log_config);
break;
case MAX34451_MFR_FAULT_RESPONSE:
if (pmdev->page < 16) {
pmbus_send32(pmdev, s->fault_response[pmdev->page]);
}
break;
case MAX34451_MFR_FAULT_RETRY:
pmbus_send32(pmdev, s->fault_retry);
break;
case MAX34451_MFR_NV_FAULT_LOG:
pmbus_send32(pmdev, s->fault_log);
break;
case MAX34451_MFR_TIME_COUNT:
pmbus_send32(pmdev, s->time_count);
break;
case MAX34451_MFR_MARGIN_CONFIG:
if (pmdev->page < 12) {
pmbus_send16(pmdev, s->margin_config[pmdev->page]);
}
break;
case MAX34451_MFR_FW_SERIAL:
if (pmdev->page == 255) {
pmbus_send16(pmdev, 1); /* Firmware revision */
}
break;
case MAX34451_MFR_IOUT_AVG:
if (pmdev->page < 16) {
pmbus_send16(pmdev, s->iout_avg[pmdev->page]);
}
break;
case MAX34451_MFR_CHANNEL_CONFIG:
if (pmdev->page < 16) {
pmbus_send16(pmdev, s->channel_config[pmdev->page]);
}
break;
case MAX34451_MFR_TON_SEQ_MAX:
if (pmdev->page < 12) {
pmbus_send16(pmdev, s->ton_seq_max[pmdev->page]);
}
break;
case MAX34451_MFR_PWM_CONFIG:
if (pmdev->page < 12) {
pmbus_send32(pmdev, s->pwm_config[pmdev->page]);
}
break;
case MAX34451_MFR_SEQ_CONFIG:
if (pmdev->page < 12) {
pmbus_send32(pmdev, s->seq_config[pmdev->page]);
}
break;
case MAX34451_MFR_TEMP_SENSOR_CONFIG:
if (15 < pmdev->page && pmdev->page < 21) {
pmbus_send32(pmdev, s->temp_sensor_config[pmdev->page % 16]);
}
break;
case MAX34451_MFR_STORE_SINGLE:
pmbus_send32(pmdev, s->store_single);
break;
case MAX34451_MFR_CRC:
pmbus_send32(pmdev, s->crc);
break;
default:
qemu_log_mask(LOG_GUEST_ERROR,
"%s: reading from unsupported register: 0x%02x\n",
__func__, pmdev->code);
break;
}
return 0xFF;
}
static int max34451_write_data(PMBusDevice *pmdev, const uint8_t *buf,
uint8_t len)
{
MAX34451State *s = MAX34451(pmdev);
if (len == 0) {
qemu_log_mask(LOG_GUEST_ERROR, "%s: writing empty data\n", __func__);
return -1;
}
pmdev->code = buf[0]; /* PMBus command code */
if (len == 1) {
return 0;
}
/* Exclude command code from buffer */
buf++;
len--;
uint8_t index = pmdev->page;
switch (pmdev->code) {
case MAX34451_MFR_STORE_ALL:
case MAX34451_MFR_RESTORE_ALL:
case MAX34451_MFR_STORE_SINGLE:
/*
* TODO: hardware behaviour is to move the contents of volatile
* memory to non-volatile memory.
*/
break;
case PMBUS_POWER_GOOD_ON: /* R/W word */
if (pmdev->page < MAX34451_NUM_PWR_DEVICES) {
s->power_good_on[pmdev->page] = pmbus_receive16(pmdev);
}
break;
case PMBUS_POWER_GOOD_OFF: /* R/W word */
if (pmdev->page < MAX34451_NUM_PWR_DEVICES) {
s->power_good_off[pmdev->page] = pmbus_receive16(pmdev);
}
break;
case PMBUS_TON_DELAY: /* R/W word */
if (pmdev->page < 12) {
s->ton_delay[pmdev->page] = pmbus_receive16(pmdev);
}
break;
case PMBUS_TON_MAX_FAULT_LIMIT: /* R/W word */
if (pmdev->page < 12) {
s->ton_max_fault_limit[pmdev->page]
= pmbus_receive16(pmdev);
}
break;
case PMBUS_TOFF_DELAY: /* R/W word */
if (pmdev->page < 12) {
s->toff_delay[pmdev->page] = pmbus_receive16(pmdev);
}
break;
case PMBUS_MFR_LOCATION: /* R/W 64 */
s->mfr_location = pmbus_receive64(pmdev);
break;
case PMBUS_MFR_DATE: /* R/W 64 */
s->mfr_date = pmbus_receive64(pmdev);
break;
case PMBUS_MFR_SERIAL: /* R/W 64 */
s->mfr_serial = pmbus_receive64(pmdev);
break;
case MAX34451_MFR_MODE: /* R/W word */
s->mfr_mode = pmbus_receive16(pmdev);
break;
case MAX34451_MFR_PSEN_CONFIG: /* R/W 32 */
if (pmdev->page < 12) {
s->psen_config[pmdev->page] = pmbus_receive32(pmdev);
}
break;
case MAX34451_MFR_VOUT_PEAK: /* R/W word */
if (pmdev->page < 16) {
s->vout_peak[pmdev->page] = pmbus_receive16(pmdev);
}
break;
case MAX34451_MFR_IOUT_PEAK: /* R/W word */
if (pmdev->page < 16) {
s->iout_peak[pmdev->page] = pmbus_receive16(pmdev);
}
break;
case MAX34451_MFR_TEMPERATURE_PEAK: /* R/W word */
if (15 < pmdev->page && pmdev->page < 21) {
s->temperature_peak[pmdev->page % 16]
= pmbus_receive16(pmdev);
}
break;
case MAX34451_MFR_VOUT_MIN: /* R/W word */
if (pmdev->page < 16) {
s->vout_min[pmdev->page] = pmbus_receive16(pmdev);
}
break;
case MAX34451_MFR_NV_LOG_CONFIG: /* R/W word */
s->nv_log_config = pmbus_receive16(pmdev);
break;
case MAX34451_MFR_FAULT_RESPONSE: /* R/W 32 */
if (pmdev->page < 16) {
s->fault_response[pmdev->page] = pmbus_receive32(pmdev);
}
break;
case MAX34451_MFR_FAULT_RETRY: /* R/W word */
s->fault_retry = pmbus_receive16(pmdev);
break;
case MAX34451_MFR_TIME_COUNT: /* R/W 32 */
s->time_count = pmbus_receive32(pmdev);
break;
case MAX34451_MFR_MARGIN_CONFIG: /* R/W word */
if (pmdev->page < 12) {
s->margin_config[pmdev->page] = pmbus_receive16(pmdev);
}
break;
case MAX34451_MFR_CHANNEL_CONFIG: /* R/W word */
if (pmdev->page < 16) {
s->channel_config[pmdev->page] = pmbus_receive16(pmdev);
}
break;
case MAX34451_MFR_TON_SEQ_MAX: /* R/W word */
if (pmdev->page < 12) {
s->ton_seq_max[pmdev->page] = pmbus_receive16(pmdev);
}
break;
case MAX34451_MFR_PWM_CONFIG: /* R/W 32 */
if (pmdev->page < 12) {
s->pwm_config[pmdev->page] = pmbus_receive32(pmdev);
}
break;
case MAX34451_MFR_SEQ_CONFIG: /* R/W 32 */
if (pmdev->page < 12) {
s->seq_config[pmdev->page] = pmbus_receive32(pmdev);
}
break;
case MAX34451_MFR_TEMP_SENSOR_CONFIG: /* R/W word */
if (15 < pmdev->page && pmdev->page < 21) {
s->temp_sensor_config[pmdev->page % 16]
= pmbus_receive16(pmdev);
}
break;
case MAX34451_MFR_CRC: /* R/W word */
s->crc = pmbus_receive16(pmdev);
break;
case MAX34451_MFR_NV_FAULT_LOG:
case MAX34451_MFR_FW_SERIAL:
case MAX34451_MFR_IOUT_AVG:
/* Read only commands */
pmdev->pages[index].status_word |= PMBUS_STATUS_CML;
pmdev->pages[index].status_cml |= PB_CML_FAULT_INVALID_DATA;
qemu_log_mask(LOG_GUEST_ERROR,
"%s: writing to read-only register 0x%02x\n",
__func__, pmdev->code);
break;
default:
qemu_log_mask(LOG_GUEST_ERROR,
"%s: writing to unsupported register: 0x%02x\n",
__func__, pmdev->code);
break;
}
return 0;
}
static void max34451_get(Object *obj, Visitor *v, const char *name,
void *opaque, Error **errp)
{
visit_type_uint16(v, name, (uint16_t *)opaque, errp);
}
static void max34451_set(Object *obj, Visitor *v, const char *name,
void *opaque, Error **errp)
{
MAX34451State *s = MAX34451(obj);
uint16_t *internal = opaque;
uint16_t value;
if (!visit_type_uint16(v, name, &value, errp)) {
return;
}
*internal = value;
max34451_check_limits(s);
}
/* used to init uint16_t arrays */
static inline void *memset_word(void *s, uint16_t c, size_t n)
{
size_t i;
uint16_t *p = s;
for (i = 0; i < n; i++) {
p[i] = c;
}
return s;
}
static void max34451_exit_reset(Object *obj)
{
PMBusDevice *pmdev = PMBUS_DEVICE(obj);
MAX34451State *s = MAX34451(obj);
pmdev->capability = DEFAULT_CAPABILITY;
for (int i = 0; i < MAX34451_NUM_PAGES; i++) {
pmdev->pages[i].operation = DEFAULT_OP_ON;
pmdev->pages[i].on_off_config = DEFAULT_ON_OFF_CONFIG;
pmdev->pages[i].revision = 0x11;
pmdev->pages[i].vout_mode = DEFAULT_VOUT_MODE;
}
for (int i = 0; i < MAX34451_NUM_PWR_DEVICES; i++) {
pmdev->pages[i].vout_scale_monitor = DEFAULT_SCALE;
pmdev->pages[i].vout_ov_fault_limit = DEFAULT_OV_LIMIT;
pmdev->pages[i].vout_ov_warn_limit = DEFAULT_OV_LIMIT;
pmdev->pages[i].iout_oc_warn_limit = DEFAULT_OC_LIMIT;
pmdev->pages[i].iout_oc_fault_limit = DEFAULT_OC_LIMIT;
}
for (int i = 0; i < MAX34451_NUM_MARGINED_PSU; i++) {
pmdev->pages[i].ton_max_fault_limit = DEFAULT_TON_FAULT_LIMIT;
}
for (int i = 16; i < MAX34451_NUM_TEMP_DEVICES + 16; i++) {
pmdev->pages[i].read_temperature_1 = DEFAULT_TEMPERATURE;
pmdev->pages[i].ot_warn_limit = DEFAULT_OT_LIMIT;
pmdev->pages[i].ot_fault_limit = DEFAULT_OT_LIMIT;
}
memset_word(s->ton_max_fault_limit, DEFAULT_TON_FAULT_LIMIT,
MAX34451_NUM_MARGINED_PSU);
memset_word(s->channel_config, DEFAULT_CHANNEL_CONFIG,
MAX34451_NUM_PWR_DEVICES);
memset_word(s->vout_min, DEFAULT_VMIN, MAX34451_NUM_PWR_DEVICES);
s->mfr_location = DEFAULT_TEXT;
s->mfr_date = DEFAULT_TEXT;
s->mfr_serial = DEFAULT_TEXT;
}
static const VMStateDescription vmstate_max34451 = {
.name = TYPE_MAX34451,
.version_id = 0,
.minimum_version_id = 0,
.fields = (VMStateField[]){
VMSTATE_PMBUS_DEVICE(parent, MAX34451State),
VMSTATE_UINT16_ARRAY(power_good_on, MAX34451State,
MAX34451_NUM_PWR_DEVICES),
VMSTATE_UINT16_ARRAY(power_good_off, MAX34451State,
MAX34451_NUM_PWR_DEVICES),
VMSTATE_UINT16_ARRAY(ton_delay, MAX34451State,
MAX34451_NUM_MARGINED_PSU),
VMSTATE_UINT16_ARRAY(ton_max_fault_limit, MAX34451State,
MAX34451_NUM_MARGINED_PSU),
VMSTATE_UINT16_ARRAY(toff_delay, MAX34451State,
MAX34451_NUM_MARGINED_PSU),
VMSTATE_UINT8_ARRAY(status_mfr_specific, MAX34451State,
MAX34451_NUM_PWR_DEVICES),
VMSTATE_UINT64(mfr_location, MAX34451State),
VMSTATE_UINT64(mfr_date, MAX34451State),
VMSTATE_UINT64(mfr_serial, MAX34451State),
VMSTATE_UINT16(mfr_mode, MAX34451State),
VMSTATE_UINT32_ARRAY(psen_config, MAX34451State,
MAX34451_NUM_MARGINED_PSU),
VMSTATE_UINT16_ARRAY(vout_peak, MAX34451State,
MAX34451_NUM_PWR_DEVICES),
VMSTATE_UINT16_ARRAY(iout_peak, MAX34451State,
MAX34451_NUM_PWR_DEVICES),
VMSTATE_UINT16_ARRAY(temperature_peak, MAX34451State,
MAX34451_NUM_TEMP_DEVICES),
VMSTATE_UINT16_ARRAY(vout_min, MAX34451State, MAX34451_NUM_PWR_DEVICES),
VMSTATE_UINT16(nv_log_config, MAX34451State),
VMSTATE_UINT32_ARRAY(fault_response, MAX34451State,
MAX34451_NUM_PWR_DEVICES),
VMSTATE_UINT16(fault_retry, MAX34451State),
VMSTATE_UINT32(fault_log, MAX34451State),
VMSTATE_UINT32(time_count, MAX34451State),
VMSTATE_UINT16_ARRAY(margin_config, MAX34451State,
MAX34451_NUM_MARGINED_PSU),
VMSTATE_UINT16(fw_serial, MAX34451State),
VMSTATE_UINT16_ARRAY(iout_avg, MAX34451State, MAX34451_NUM_PWR_DEVICES),
VMSTATE_UINT16_ARRAY(channel_config, MAX34451State,
MAX34451_NUM_PWR_DEVICES),
VMSTATE_UINT16_ARRAY(ton_seq_max, MAX34451State,
MAX34451_NUM_MARGINED_PSU),
VMSTATE_UINT32_ARRAY(pwm_config, MAX34451State,
MAX34451_NUM_MARGINED_PSU),
VMSTATE_UINT32_ARRAY(seq_config, MAX34451State,
MAX34451_NUM_MARGINED_PSU),
VMSTATE_UINT16_ARRAY(temp_sensor_config, MAX34451State,
MAX34451_NUM_TEMP_DEVICES),
VMSTATE_UINT16(store_single, MAX34451State),
VMSTATE_UINT16(crc, MAX34451State),
VMSTATE_END_OF_LIST()
}
};
static void max34451_init(Object *obj)
{
PMBusDevice *pmdev = PMBUS_DEVICE(obj);
uint64_t psu_flags = PB_HAS_VOUT | PB_HAS_IOUT | PB_HAS_VOUT_MODE |
PB_HAS_IOUT_GAIN;
for (int i = 0; i < MAX34451_NUM_PWR_DEVICES; i++) {
pmbus_page_config(pmdev, i, psu_flags);
}
for (int i = 0; i < MAX34451_NUM_MARGINED_PSU; i++) {
pmbus_page_config(pmdev, i, psu_flags | PB_HAS_VOUT_MARGIN);
}
for (int i = 16; i < MAX34451_NUM_TEMP_DEVICES + 16; i++) {
pmbus_page_config(pmdev, i, PB_HAS_TEMPERATURE | PB_HAS_VOUT_MODE);
}
/* get and set the voltage in millivolts, max is 32767 mV */
for (int i = 0; i < MAX34451_NUM_PWR_DEVICES; i++) {
object_property_add(obj, "vout[*]", "uint16",
max34451_get,
max34451_set, NULL, &pmdev->pages[i].read_vout);
}
/*
* get and set the temperature of the internal temperature sensor in
* centidegrees Celcius i.e.: 2500 -> 25.00 C, max is 327.67 C
*/
for (int i = 0; i < MAX34451_NUM_TEMP_DEVICES; i++) {
object_property_add(obj, "temperature[*]", "uint16",
max34451_get,
max34451_set,
NULL,
&pmdev->pages[i + 16].read_temperature_1);
}
}
static void max34451_class_init(ObjectClass *klass, void *data)
{
ResettableClass *rc = RESETTABLE_CLASS(klass);
DeviceClass *dc = DEVICE_CLASS(klass);
PMBusDeviceClass *k = PMBUS_DEVICE_CLASS(klass);
dc->desc = "Maxim MAX34451 16-Channel V/I monitor";
dc->vmsd = &vmstate_max34451;
k->write_data = max34451_write_data;
k->receive_byte = max34451_read_byte;
k->device_num_pages = MAX34451_NUM_PAGES;
rc->phases.exit = max34451_exit_reset;
}
static const TypeInfo max34451_info = {
.name = TYPE_MAX34451,
.parent = TYPE_PMBUS_DEVICE,
.instance_size = sizeof(MAX34451State),
.instance_init = max34451_init,
.class_init = max34451_class_init,
};
static void max34451_register_types(void)
{
type_register_static(&max34451_info);
}
type_init(max34451_register_types)
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