hwmon: (pmbus/adm1275) Add support for ADM1272
The chip is quite similar to other chips in the series, but as usual it comes with its own quirks. Signed-off-by: Guenter Roeck <linux@roeck-us.net>
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Guenter Roeck
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05993e226a
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4ff0ce227a
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@ -6,6 +6,10 @@ Supported chips:
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Prefix: 'adm1075'
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Addresses scanned: -
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Datasheet: www.analog.com/static/imported-files/data_sheets/ADM1075.pdf
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* Analog Devices ADM1272
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Prefix: 'adm1272'
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Addresses scanned: -
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Datasheet: www.analog.com/static/imported-files/data_sheets/ADM1272.pdf
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* Analog Devices ADM1275
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Prefix: 'adm1275'
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Addresses scanned: -
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@ -29,11 +33,11 @@ Author: Guenter Roeck <linux@roeck-us.net>
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Description
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-----------
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This driver supports hardware monitoring for Analog Devices ADM1075, ADM1275,
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ADM1276, ADM1278, ADM1293, and ADM1294 Hot-Swap Controller and Digital
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Power Monitors.
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This driver supports hardware monitoring for Analog Devices ADM1075, ADM1272,
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ADM1275, ADM1276, ADM1278, ADM1293, and ADM1294 Hot-Swap Controller and
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Digital Power Monitors.
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ADM1075, ADM1275, ADM1276, ADM1278, ADM1293, and ADM1294 are hot-swap
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ADM1075, ADM1272, ADM1275, ADM1276, ADM1278, ADM1293, and ADM1294 are hot-swap
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controllers that allow a circuit board to be removed from or inserted into
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a live backplane. They also feature current and voltage readback via an
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integrated 12 bit analog-to-digital converter (ADC), accessed using a
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@ -100,11 +104,10 @@ power1_input_lowest Lowest observed input power. ADM1293 and ADM1294 only.
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power1_input_highest Highest observed input power.
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power1_reset_history Write any value to reset history.
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Power attributes are supported on ADM1075, ADM1276,
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ADM1293, and ADM1294.
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Power attributes are supported on ADM1075, ADM1272,
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ADM1276, ADM1293, and ADM1294.
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temp1_input Chip temperature.
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Temperature attributes are only available on ADM1278.
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temp1_max Maximum chip temperature.
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temp1_max_alarm Temperature alarm.
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temp1_crit Critical chip temperature.
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@ -112,4 +115,5 @@ temp1_crit_alarm Critical temperature high alarm.
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temp1_highest Highest observed temperature.
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temp1_reset_history Write any value to reset history.
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Temperature attributes are supported on ADM1278.
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Temperature attributes are supported on ADM1272 and
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ADM1278.
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@ -31,8 +31,8 @@ config SENSORS_ADM1275
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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 Analog
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Devices ADM1075, ADM1275, ADM1276, ADM1278, ADM1293, and ADM1294
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Hot-Swap Controller and Digital Power Monitors.
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Devices ADM1075, ADM1272, ADM1275, ADM1276, ADM1278, ADM1293,
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and ADM1294 Hot-Swap Controller and Digital Power Monitors.
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This driver can also be built as a module. If so, the module will
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be called adm1275.
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@ -3,6 +3,7 @@
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* and Digital Power Monitor
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*
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* Copyright (c) 2011 Ericsson AB.
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* Copyright (c) 2018 Guenter Roeck
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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@ -24,7 +25,7 @@
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#include <linux/bitops.h>
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#include "pmbus.h"
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enum chips { adm1075, adm1275, adm1276, adm1278, adm1293, adm1294 };
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enum chips { adm1075, adm1272, adm1275, adm1276, adm1278, adm1293, adm1294 };
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#define ADM1275_MFR_STATUS_IOUT_WARN2 BIT(0)
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#define ADM1293_MFR_STATUS_VAUX_UV_WARN BIT(5)
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@ -41,6 +42,8 @@ enum chips { adm1075, adm1275, adm1276, adm1278, adm1293, adm1294 };
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#define ADM1075_IRANGE_25 BIT(3)
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#define ADM1075_IRANGE_MASK (BIT(3) | BIT(4))
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#define ADM1272_IRANGE BIT(0)
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#define ADM1278_TEMP1_EN BIT(3)
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#define ADM1278_VIN_EN BIT(2)
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#define ADM1278_VOUT_EN BIT(1)
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@ -105,6 +108,19 @@ static const struct coefficients adm1075_coefficients[] = {
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[4] = { 4279, 0, -1 }, /* power, irange50 */
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};
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static const struct coefficients adm1272_coefficients[] = {
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[0] = { 6770, 0, -2 }, /* voltage, vrange 60V */
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[1] = { 4062, 0, -2 }, /* voltage, vrange 100V */
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[2] = { 1326, 20480, -1 }, /* current, vsense range 15mV */
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[3] = { 663, 20480, -1 }, /* current, vsense range 30mV */
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[4] = { 3512, 0, -2 }, /* power, vrange 60V, irange 15mV */
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[5] = { 21071, 0, -3 }, /* power, vrange 100V, irange 15mV */
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[6] = { 17561, 0, -3 }, /* power, vrange 60V, irange 30mV */
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[7] = { 10535, 0, -3 }, /* power, vrange 100V, irange 30mV */
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[8] = { 42, 31871, -1 }, /* temperature */
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};
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static const struct coefficients adm1275_coefficients[] = {
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[0] = { 19199, 0, -2 }, /* voltage, vrange set */
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[1] = { 6720, 0, -1 }, /* voltage, vrange not set */
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@ -335,6 +351,7 @@ static int adm1275_read_byte_data(struct i2c_client *client, int page, int reg)
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static const struct i2c_device_id adm1275_id[] = {
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{ "adm1075", adm1075 },
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{ "adm1272", adm1272 },
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{ "adm1275", adm1275 },
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{ "adm1276", adm1276 },
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{ "adm1278", adm1278 },
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@ -451,6 +468,54 @@ static int adm1275_probe(struct i2c_client *client,
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info->func[0] |=
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PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT;
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break;
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case adm1272:
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data->have_vout = true;
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data->have_pin_max = true;
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data->have_temp_max = true;
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coefficients = adm1272_coefficients;
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vindex = (config & ADM1275_VRANGE) ? 1 : 0;
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cindex = (config & ADM1272_IRANGE) ? 3 : 2;
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/* pindex depends on the combination of the above */
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switch (config & (ADM1275_VRANGE | ADM1272_IRANGE)) {
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case 0:
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default:
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pindex = 4;
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break;
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case ADM1275_VRANGE:
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pindex = 5;
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break;
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case ADM1272_IRANGE:
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pindex = 6;
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break;
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case ADM1275_VRANGE | ADM1272_IRANGE:
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pindex = 7;
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break;
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}
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tindex = 8;
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info->func[0] |= PMBUS_HAVE_PIN | PMBUS_HAVE_STATUS_INPUT |
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PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT;
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/* Enable VOUT if not enabled (it is disabled by default) */
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if (!(config & ADM1278_VOUT_EN)) {
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config |= ADM1278_VOUT_EN;
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ret = i2c_smbus_write_byte_data(client,
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ADM1275_PMON_CONFIG,
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config);
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if (ret < 0) {
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dev_err(&client->dev,
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"Failed to enable VOUT monitoring\n");
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return -ENODEV;
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}
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}
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if (config & ADM1278_TEMP1_EN)
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info->func[0] |=
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PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP;
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if (config & ADM1278_VIN_EN)
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info->func[0] |= PMBUS_HAVE_VIN;
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break;
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case adm1275:
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if (device_config & ADM1275_IOUT_WARN2_SELECT)
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data->have_oc_fault = true;
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