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532 lines
16 KiB
532 lines
16 KiB
// 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, |
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.write_word_data = max34440_write_word_data, |
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}, |
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[max34460] = { |
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.pages = 18, |
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.format[PSC_VOLTAGE_OUT] = direct, |
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.format[PSC_TEMPERATURE] = 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_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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.func[1] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT, |
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.func[2] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT, |
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.func[3] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT, |
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.func[4] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT, |
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.func[5] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT, |
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.func[6] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT, |
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.func[7] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT, |
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.func[8] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT, |
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.func[9] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT, |
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.func[10] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT, |
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.func[11] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT, |
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.func[13] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP, |
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.func[14] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP, |
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.func[15] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP, |
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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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.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_new = 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);
|
|
|