hwmon: (max34440) Add support for MAX34446
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
This commit is contained in:
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60b873e332
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590defe59e
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@ -11,6 +11,11 @@ Supported chips:
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Prefixes: 'max34441'
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Addresses scanned: -
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Datasheet: http://datasheets.maxim-ic.com/en/ds/MAX34441.pdf
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* Maxim MAX34446
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PMBus Power-Supply Data Logger
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Prefixes: 'max34446'
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Addresses scanned: -
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Datasheet: http://datasheets.maxim-ic.com/en/ds/MAX34446.pdf
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Author: Guenter Roeck <guenter.roeck@ericsson.com>
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@ -19,8 +24,8 @@ Description
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-----------
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This driver supports hardware montoring for Maxim MAX34440 PMBus 6-Channel
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Power-Supply Manager and MAX34441 PMBus 5-Channel Power-Supply Manager
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and Intelligent Fan Controller.
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Power-Supply Manager, MAX34441 PMBus 5-Channel Power-Supply Manager
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and Intelligent Fan Controller, and MAX34446 PMBus Power-Supply Data Logger.
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The driver is a client driver to the core PMBus driver. Please see
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Documentation/hwmon/pmbus for details on PMBus client drivers.
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@ -33,6 +38,13 @@ This driver does not auto-detect devices. You will have to instantiate the
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devices explicitly. Please see Documentation/i2c/instantiating-devices for
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details.
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For MAX34446, the value of the currX_crit attribute determines if current or
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voltage measurement is enabled for a given channel. Voltage measurement is
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enabled if currX_crit is set to 0; current measurement is enabled if the
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attribute is set to a positive value. Power measurement is only enabled if
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channel 1 (3) is configured for voltage measurement, and channel 2 (4) is
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configured for current measurement.
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Platform data support
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---------------------
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@ -60,16 +72,27 @@ in[1-6]_lowest Historical minimum voltage.
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in[1-6]_highest Historical maximum voltage.
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in[1-6]_reset_history Write any value to reset history.
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MAX34446 only supports in[1-4].
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curr[1-6]_label "iout[1-6]".
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curr[1-6]_input Measured current. From READ_IOUT register.
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curr[1-6]_max Maximum current. From IOUT_OC_WARN_LIMIT register.
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curr[1-6]_crit Critical maximum current. From IOUT_OC_FAULT_LIMIT register.
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curr[1-6]_max_alarm Current high alarm. From IOUT_OC_WARNING status.
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curr[1-6]_crit_alarm Current critical high alarm. From IOUT_OC_FAULT status.
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curr[1-4]_average Historical average current (MAX34446 only).
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curr[1-6]_highest Historical maximum current.
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curr[1-6]_reset_history Write any value to reset history.
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in6 and curr6 attributes only exist for MAX34440.
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MAX34446 only supports curr[1-4].
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power[1,3]_label "pout[1,3]"
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power[1,3]_input Measured power.
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power[1,3]_average Historical average power.
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power[1,3]_highest Historical maximum power.
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Power attributes only exist for MAX34446.
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temp[1-8]_input Measured temperatures. From READ_TEMPERATURE_1 register.
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temp1 is the chip's internal temperature. temp2..temp5
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@ -80,7 +103,9 @@ temp[1-8]_max Maximum temperature. From OT_WARN_LIMIT register.
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temp[1-8]_crit Critical high temperature. From OT_FAULT_LIMIT register.
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temp[1-8]_max_alarm Temperature high alarm.
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temp[1-8]_crit_alarm Temperature critical high alarm.
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temp[1-8]_average Historical average temperature (MAX34446 only).
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temp[1-8]_highest Historical maximum temperature.
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temp[1-8]_reset_history Write any value to reset history.
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temp7 and temp8 attributes only exist for MAX34440.
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MAX34446 only supports temp[1-3].
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@ -68,11 +68,11 @@ config SENSORS_MAX16064
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be called max16064.
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config SENSORS_MAX34440
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tristate "Maxim MAX34440/MAX34441"
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tristate "Maxim MAX34440 and compatibles"
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default n
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help
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If you say yes here you get hardware monitoring support for Maxim
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MAX34440 and MAX34441.
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MAX34440, MAX34441, and MAX34446.
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This driver can also be built as a module. If so, the module will
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be called max34440.
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@ -25,21 +25,35 @@
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#include <linux/i2c.h>
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#include "pmbus.h"
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enum chips { max34440, max34441 };
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enum chips { max34440, max34441, max34446 };
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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 (1 << 0)
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#define MAX34440_STATUS_OC_FAULT (1 << 1)
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#define MAX34440_STATUS_OT_FAULT (1 << 5)
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#define MAX34440_STATUS_OT_WARN (1 << 6)
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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 int max34440_read_word_data(struct i2c_client *client, int page, 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_VIRT_READ_VOUT_MIN:
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@ -50,14 +64,43 @@ static int max34440_read_word_data(struct i2c_client *client, int page, int reg)
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ret = pmbus_read_word_data(client, page,
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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)
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return -ENXIO;
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ret = pmbus_read_word_data(client, page,
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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,
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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,
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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,
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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)
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return -ENXIO;
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ret = pmbus_read_word_data(client, page,
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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,
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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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@ -73,9 +116,19 @@ static int max34440_read_word_data(struct i2c_client *client, int page, int reg)
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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_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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@ -87,11 +140,18 @@ static int max34440_write_word_data(struct i2c_client *client, int page,
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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)
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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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@ -225,20 +285,66 @@ static struct pmbus_driver_info max34440_info[] = {
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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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};
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static int max34440_probe(struct i2c_client *client,
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const struct i2c_device_id *id)
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{
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return pmbus_do_probe(client, id, &max34440_info[id->driver_data]);
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struct max34440_data *data;
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data = devm_kzalloc(&client->dev, sizeof(struct max34440_data),
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GFP_KERNEL);
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if (!data)
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return -ENOMEM;
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data->id = id->driver_data;
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data->info = max34440_info[id->driver_data];
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return pmbus_do_probe(client, id, &data->info);
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}
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static const struct i2c_device_id max34440_id[] = {
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{"max34440", max34440},
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{"max34441", max34441},
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{"max34446", max34446},
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{}
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};
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MODULE_DEVICE_TABLE(i2c, max34440_id);
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/* This is the driver that will be inserted */
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