533 lines
16 KiB
C
533 lines
16 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Hardware monitoring driver for Maxim MAX34440/MAX34441
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*
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* Copyright (c) 2011 Ericsson AB.
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* Copyright (c) 2012 Guenter Roeck
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*/
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#include <linux/bitops.h>
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/err.h>
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#include <linux/i2c.h>
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#include "pmbus.h"
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enum chips { max34440, max34441, max34446, max34451, max34460, max34461 };
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#define MAX34440_MFR_VOUT_PEAK 0xd4
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#define MAX34440_MFR_IOUT_PEAK 0xd5
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#define MAX34440_MFR_TEMPERATURE_PEAK 0xd6
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#define MAX34440_MFR_VOUT_MIN 0xd7
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#define MAX34446_MFR_POUT_PEAK 0xe0
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#define MAX34446_MFR_POUT_AVG 0xe1
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#define MAX34446_MFR_IOUT_AVG 0xe2
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#define MAX34446_MFR_TEMPERATURE_AVG 0xe3
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#define MAX34440_STATUS_OC_WARN BIT(0)
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#define MAX34440_STATUS_OC_FAULT BIT(1)
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#define MAX34440_STATUS_OT_FAULT BIT(5)
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#define MAX34440_STATUS_OT_WARN BIT(6)
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/*
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* The whole max344* family have IOUT_OC_WARN_LIMIT and IOUT_OC_FAULT_LIMIT
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* swapped from the standard pmbus spec addresses.
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*/
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#define MAX34440_IOUT_OC_WARN_LIMIT 0x46
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#define MAX34440_IOUT_OC_FAULT_LIMIT 0x4A
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#define MAX34451_MFR_CHANNEL_CONFIG 0xe4
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#define MAX34451_MFR_CHANNEL_CONFIG_SEL_MASK 0x3f
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struct max34440_data {
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int id;
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struct pmbus_driver_info info;
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};
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#define to_max34440_data(x) container_of(x, struct max34440_data, info)
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static const struct i2c_device_id max34440_id[];
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static int max34440_read_word_data(struct i2c_client *client, int page,
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int phase, int reg)
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{
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int ret;
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const struct pmbus_driver_info *info = pmbus_get_driver_info(client);
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const struct max34440_data *data = to_max34440_data(info);
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switch (reg) {
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case PMBUS_IOUT_OC_FAULT_LIMIT:
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ret = pmbus_read_word_data(client, page, phase,
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MAX34440_IOUT_OC_FAULT_LIMIT);
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break;
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case PMBUS_IOUT_OC_WARN_LIMIT:
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ret = pmbus_read_word_data(client, page, phase,
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MAX34440_IOUT_OC_WARN_LIMIT);
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break;
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case PMBUS_VIRT_READ_VOUT_MIN:
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ret = pmbus_read_word_data(client, page, phase,
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MAX34440_MFR_VOUT_MIN);
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break;
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case PMBUS_VIRT_READ_VOUT_MAX:
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ret = pmbus_read_word_data(client, page, phase,
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MAX34440_MFR_VOUT_PEAK);
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break;
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case PMBUS_VIRT_READ_IOUT_AVG:
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if (data->id != max34446 && data->id != max34451)
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return -ENXIO;
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ret = pmbus_read_word_data(client, page, phase,
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MAX34446_MFR_IOUT_AVG);
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break;
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case PMBUS_VIRT_READ_IOUT_MAX:
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ret = pmbus_read_word_data(client, page, phase,
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MAX34440_MFR_IOUT_PEAK);
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break;
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case PMBUS_VIRT_READ_POUT_AVG:
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if (data->id != max34446)
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return -ENXIO;
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ret = pmbus_read_word_data(client, page, phase,
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MAX34446_MFR_POUT_AVG);
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break;
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case PMBUS_VIRT_READ_POUT_MAX:
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if (data->id != max34446)
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return -ENXIO;
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ret = pmbus_read_word_data(client, page, phase,
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MAX34446_MFR_POUT_PEAK);
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break;
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case PMBUS_VIRT_READ_TEMP_AVG:
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if (data->id != max34446 && data->id != max34460 &&
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data->id != max34461)
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return -ENXIO;
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ret = pmbus_read_word_data(client, page, phase,
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MAX34446_MFR_TEMPERATURE_AVG);
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break;
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case PMBUS_VIRT_READ_TEMP_MAX:
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ret = pmbus_read_word_data(client, page, phase,
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MAX34440_MFR_TEMPERATURE_PEAK);
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break;
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case PMBUS_VIRT_RESET_POUT_HISTORY:
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if (data->id != max34446)
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return -ENXIO;
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ret = 0;
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break;
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case PMBUS_VIRT_RESET_VOUT_HISTORY:
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case PMBUS_VIRT_RESET_IOUT_HISTORY:
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case PMBUS_VIRT_RESET_TEMP_HISTORY:
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ret = 0;
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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 int max34440_write_word_data(struct i2c_client *client, int page,
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int reg, u16 word)
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{
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const struct pmbus_driver_info *info = pmbus_get_driver_info(client);
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const struct max34440_data *data = to_max34440_data(info);
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int ret;
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switch (reg) {
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case PMBUS_IOUT_OC_FAULT_LIMIT:
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ret = pmbus_write_word_data(client, page, MAX34440_IOUT_OC_FAULT_LIMIT,
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word);
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break;
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case PMBUS_IOUT_OC_WARN_LIMIT:
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ret = pmbus_write_word_data(client, page, MAX34440_IOUT_OC_WARN_LIMIT,
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word);
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break;
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case PMBUS_VIRT_RESET_POUT_HISTORY:
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ret = pmbus_write_word_data(client, page,
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MAX34446_MFR_POUT_PEAK, 0);
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if (ret)
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break;
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ret = pmbus_write_word_data(client, page,
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MAX34446_MFR_POUT_AVG, 0);
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break;
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case PMBUS_VIRT_RESET_VOUT_HISTORY:
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ret = pmbus_write_word_data(client, page,
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MAX34440_MFR_VOUT_MIN, 0x7fff);
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if (ret)
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break;
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ret = pmbus_write_word_data(client, page,
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MAX34440_MFR_VOUT_PEAK, 0);
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break;
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case PMBUS_VIRT_RESET_IOUT_HISTORY:
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ret = pmbus_write_word_data(client, page,
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MAX34440_MFR_IOUT_PEAK, 0);
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if (!ret && (data->id == max34446 || data->id == max34451))
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ret = pmbus_write_word_data(client, page,
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MAX34446_MFR_IOUT_AVG, 0);
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break;
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case PMBUS_VIRT_RESET_TEMP_HISTORY:
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ret = pmbus_write_word_data(client, page,
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MAX34440_MFR_TEMPERATURE_PEAK,
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0x8000);
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if (!ret && data->id == max34446)
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ret = pmbus_write_word_data(client, page,
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MAX34446_MFR_TEMPERATURE_AVG, 0);
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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 int max34440_read_byte_data(struct i2c_client *client, int page, int reg)
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{
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int ret = 0;
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int mfg_status;
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if (page >= 0) {
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ret = pmbus_set_page(client, page, 0xff);
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if (ret < 0)
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return ret;
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}
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switch (reg) {
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case PMBUS_STATUS_IOUT:
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mfg_status = pmbus_read_word_data(client, 0, 0xff,
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PMBUS_STATUS_MFR_SPECIFIC);
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if (mfg_status < 0)
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return mfg_status;
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if (mfg_status & MAX34440_STATUS_OC_WARN)
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ret |= PB_IOUT_OC_WARNING;
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if (mfg_status & MAX34440_STATUS_OC_FAULT)
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ret |= PB_IOUT_OC_FAULT;
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break;
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case PMBUS_STATUS_TEMPERATURE:
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mfg_status = pmbus_read_word_data(client, 0, 0xff,
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PMBUS_STATUS_MFR_SPECIFIC);
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if (mfg_status < 0)
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return mfg_status;
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if (mfg_status & MAX34440_STATUS_OT_WARN)
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ret |= PB_TEMP_OT_WARNING;
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if (mfg_status & MAX34440_STATUS_OT_FAULT)
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ret |= PB_TEMP_OT_FAULT;
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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 int max34451_set_supported_funcs(struct i2c_client *client,
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struct max34440_data *data)
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{
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/*
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* Each of the channel 0-15 can be configured to monitor the following
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* functions based on MFR_CHANNEL_CONFIG[5:0]
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* 0x10: Sequencing + voltage monitoring (only valid for PAGES 0–11)
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* 0x20: Voltage monitoring (no sequencing)
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* 0x21: Voltage read only
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* 0x22: Current monitoring
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* 0x23: Current read only
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* 0x30: General-purpose input active low
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* 0x34: General-purpose input active high
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* 0x00: Disabled
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*/
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int page, rv;
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for (page = 0; page < 16; page++) {
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rv = i2c_smbus_write_byte_data(client, PMBUS_PAGE, page);
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if (rv < 0)
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return rv;
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rv = i2c_smbus_read_word_data(client,
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MAX34451_MFR_CHANNEL_CONFIG);
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if (rv < 0)
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return rv;
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switch (rv & MAX34451_MFR_CHANNEL_CONFIG_SEL_MASK) {
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case 0x10:
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case 0x20:
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data->info.func[page] = PMBUS_HAVE_VOUT |
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PMBUS_HAVE_STATUS_VOUT;
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break;
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case 0x21:
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data->info.func[page] = PMBUS_HAVE_VOUT;
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break;
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case 0x22:
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data->info.func[page] = PMBUS_HAVE_IOUT |
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PMBUS_HAVE_STATUS_IOUT;
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break;
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case 0x23:
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data->info.func[page] = PMBUS_HAVE_IOUT;
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break;
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default:
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break;
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}
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}
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return 0;
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}
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static struct pmbus_driver_info max34440_info[] = {
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[max34440] = {
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.pages = 14,
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.format[PSC_VOLTAGE_IN] = direct,
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.format[PSC_VOLTAGE_OUT] = direct,
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.format[PSC_TEMPERATURE] = direct,
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.format[PSC_CURRENT_OUT] = direct,
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.m[PSC_VOLTAGE_IN] = 1,
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.b[PSC_VOLTAGE_IN] = 0,
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.R[PSC_VOLTAGE_IN] = 3, /* R = 0 in datasheet reflects mV */
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.m[PSC_VOLTAGE_OUT] = 1,
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.b[PSC_VOLTAGE_OUT] = 0,
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.R[PSC_VOLTAGE_OUT] = 3, /* R = 0 in datasheet reflects mV */
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.m[PSC_CURRENT_OUT] = 1,
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.b[PSC_CURRENT_OUT] = 0,
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.R[PSC_CURRENT_OUT] = 3, /* R = 0 in datasheet reflects mA */
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.m[PSC_TEMPERATURE] = 1,
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.b[PSC_TEMPERATURE] = 0,
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.R[PSC_TEMPERATURE] = 2,
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.func[0] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT
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| PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT,
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.func[1] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT
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| PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT,
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.func[2] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT
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| PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT,
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.func[3] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT
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| PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT,
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.func[4] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT
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| PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT,
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.func[5] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT
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| PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT,
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.func[6] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP,
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.func[7] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP,
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.func[8] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP,
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.func[9] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP,
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.func[10] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP,
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.func[11] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP,
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.func[12] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP,
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.func[13] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP,
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.read_byte_data = max34440_read_byte_data,
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.read_word_data = max34440_read_word_data,
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.write_word_data = max34440_write_word_data,
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},
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[max34441] = {
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.pages = 12,
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.format[PSC_VOLTAGE_IN] = direct,
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.format[PSC_VOLTAGE_OUT] = direct,
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.format[PSC_TEMPERATURE] = direct,
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.format[PSC_CURRENT_OUT] = direct,
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.format[PSC_FAN] = direct,
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.m[PSC_VOLTAGE_IN] = 1,
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.b[PSC_VOLTAGE_IN] = 0,
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.R[PSC_VOLTAGE_IN] = 3,
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.m[PSC_VOLTAGE_OUT] = 1,
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.b[PSC_VOLTAGE_OUT] = 0,
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.R[PSC_VOLTAGE_OUT] = 3,
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.m[PSC_CURRENT_OUT] = 1,
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.b[PSC_CURRENT_OUT] = 0,
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.R[PSC_CURRENT_OUT] = 3,
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.m[PSC_TEMPERATURE] = 1,
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.b[PSC_TEMPERATURE] = 0,
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.R[PSC_TEMPERATURE] = 2,
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.m[PSC_FAN] = 1,
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.b[PSC_FAN] = 0,
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.R[PSC_FAN] = 0,
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.func[0] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT
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| PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT,
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.func[1] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT
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| PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT,
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.func[2] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT
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| PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT,
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.func[3] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT
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| PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT,
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.func[4] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT
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| PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT,
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.func[5] = PMBUS_HAVE_FAN12 | PMBUS_HAVE_STATUS_FAN12,
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.func[6] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP,
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.func[7] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP,
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.func[8] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP,
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.func[9] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP,
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.func[10] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP,
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.func[11] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP,
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.read_byte_data = max34440_read_byte_data,
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.read_word_data = max34440_read_word_data,
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.write_word_data = max34440_write_word_data,
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},
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[max34446] = {
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.pages = 7,
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.format[PSC_VOLTAGE_IN] = direct,
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.format[PSC_VOLTAGE_OUT] = direct,
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.format[PSC_TEMPERATURE] = direct,
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.format[PSC_CURRENT_OUT] = direct,
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.format[PSC_POWER] = direct,
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.m[PSC_VOLTAGE_IN] = 1,
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.b[PSC_VOLTAGE_IN] = 0,
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.R[PSC_VOLTAGE_IN] = 3,
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.m[PSC_VOLTAGE_OUT] = 1,
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.b[PSC_VOLTAGE_OUT] = 0,
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.R[PSC_VOLTAGE_OUT] = 3,
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.m[PSC_CURRENT_OUT] = 1,
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.b[PSC_CURRENT_OUT] = 0,
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.R[PSC_CURRENT_OUT] = 3,
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.m[PSC_POWER] = 1,
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.b[PSC_POWER] = 0,
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.R[PSC_POWER] = 3,
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.m[PSC_TEMPERATURE] = 1,
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.b[PSC_TEMPERATURE] = 0,
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.R[PSC_TEMPERATURE] = 2,
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.func[0] = 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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.func[1] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT
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| PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT,
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.func[2] = 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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.func[3] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT
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| PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT,
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.func[4] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP,
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.func[5] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP,
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.func[6] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP,
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.read_byte_data = max34440_read_byte_data,
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.read_word_data = max34440_read_word_data,
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.write_word_data = max34440_write_word_data,
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},
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[max34451] = {
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.pages = 21,
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.format[PSC_VOLTAGE_OUT] = direct,
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.format[PSC_TEMPERATURE] = direct,
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.format[PSC_CURRENT_OUT] = direct,
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.m[PSC_VOLTAGE_OUT] = 1,
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.b[PSC_VOLTAGE_OUT] = 0,
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.R[PSC_VOLTAGE_OUT] = 3,
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.m[PSC_CURRENT_OUT] = 1,
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.b[PSC_CURRENT_OUT] = 0,
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.R[PSC_CURRENT_OUT] = 2,
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.m[PSC_TEMPERATURE] = 1,
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.b[PSC_TEMPERATURE] = 0,
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.R[PSC_TEMPERATURE] = 2,
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/* func 0-15 is set dynamically before probing */
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.func[16] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP,
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.func[17] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP,
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.func[18] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP,
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.func[19] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP,
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.func[20] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP,
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.read_word_data = max34440_read_word_data,
|
||
.write_word_data = max34440_write_word_data,
|
||
},
|
||
[max34460] = {
|
||
.pages = 18,
|
||
.format[PSC_VOLTAGE_OUT] = direct,
|
||
.format[PSC_TEMPERATURE] = direct,
|
||
.m[PSC_VOLTAGE_OUT] = 1,
|
||
.b[PSC_VOLTAGE_OUT] = 0,
|
||
.R[PSC_VOLTAGE_OUT] = 3,
|
||
.m[PSC_TEMPERATURE] = 1,
|
||
.b[PSC_TEMPERATURE] = 0,
|
||
.R[PSC_TEMPERATURE] = 2,
|
||
.func[0] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT,
|
||
.func[1] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT,
|
||
.func[2] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT,
|
||
.func[3] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT,
|
||
.func[4] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT,
|
||
.func[5] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT,
|
||
.func[6] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT,
|
||
.func[7] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT,
|
||
.func[8] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT,
|
||
.func[9] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT,
|
||
.func[10] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT,
|
||
.func[11] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT,
|
||
.func[13] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP,
|
||
.func[14] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP,
|
||
.func[15] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP,
|
||
.func[16] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP,
|
||
.func[17] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP,
|
||
.read_word_data = max34440_read_word_data,
|
||
.write_word_data = max34440_write_word_data,
|
||
},
|
||
[max34461] = {
|
||
.pages = 23,
|
||
.format[PSC_VOLTAGE_OUT] = direct,
|
||
.format[PSC_TEMPERATURE] = direct,
|
||
.m[PSC_VOLTAGE_OUT] = 1,
|
||
.b[PSC_VOLTAGE_OUT] = 0,
|
||
.R[PSC_VOLTAGE_OUT] = 3,
|
||
.m[PSC_TEMPERATURE] = 1,
|
||
.b[PSC_TEMPERATURE] = 0,
|
||
.R[PSC_TEMPERATURE] = 2,
|
||
.func[0] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT,
|
||
.func[1] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT,
|
||
.func[2] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT,
|
||
.func[3] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT,
|
||
.func[4] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT,
|
||
.func[5] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT,
|
||
.func[6] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT,
|
||
.func[7] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT,
|
||
.func[8] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT,
|
||
.func[9] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT,
|
||
.func[10] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT,
|
||
.func[11] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT,
|
||
.func[12] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT,
|
||
.func[13] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT,
|
||
.func[14] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT,
|
||
.func[15] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT,
|
||
/* page 16 is reserved */
|
||
.func[17] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP,
|
||
.func[18] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP,
|
||
.func[19] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP,
|
||
.func[20] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP,
|
||
.func[21] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP,
|
||
.read_word_data = max34440_read_word_data,
|
||
.write_word_data = max34440_write_word_data,
|
||
},
|
||
};
|
||
|
||
static int max34440_probe(struct i2c_client *client)
|
||
{
|
||
struct max34440_data *data;
|
||
int rv;
|
||
|
||
data = devm_kzalloc(&client->dev, sizeof(struct max34440_data),
|
||
GFP_KERNEL);
|
||
if (!data)
|
||
return -ENOMEM;
|
||
data->id = i2c_match_id(max34440_id, client)->driver_data;
|
||
data->info = max34440_info[data->id];
|
||
|
||
if (data->id == max34451) {
|
||
rv = max34451_set_supported_funcs(client, data);
|
||
if (rv)
|
||
return rv;
|
||
}
|
||
|
||
return pmbus_do_probe(client, &data->info);
|
||
}
|
||
|
||
static const struct i2c_device_id max34440_id[] = {
|
||
{"max34440", max34440},
|
||
{"max34441", max34441},
|
||
{"max34446", max34446},
|
||
{"max34451", max34451},
|
||
{"max34460", max34460},
|
||
{"max34461", max34461},
|
||
{}
|
||
};
|
||
MODULE_DEVICE_TABLE(i2c, max34440_id);
|
||
|
||
/* This is the driver that will be inserted */
|
||
static struct i2c_driver max34440_driver = {
|
||
.driver = {
|
||
.name = "max34440",
|
||
},
|
||
.probe = max34440_probe,
|
||
.id_table = max34440_id,
|
||
};
|
||
|
||
module_i2c_driver(max34440_driver);
|
||
|
||
MODULE_AUTHOR("Guenter Roeck");
|
||
MODULE_DESCRIPTION("PMBus driver for Maxim MAX34440/MAX34441");
|
||
MODULE_LICENSE("GPL");
|
||
MODULE_IMPORT_NS(PMBUS);
|