提交 4ff0ce22 编写于 作者: G Guenter Roeck

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: NGuenter Roeck <linux@roeck-us.net>
上级 05993e22
......@@ -6,6 +6,10 @@ Supported chips:
Prefix: 'adm1075'
Addresses scanned: -
Datasheet: www.analog.com/static/imported-files/data_sheets/ADM1075.pdf
* Analog Devices ADM1272
Prefix: 'adm1272'
Addresses scanned: -
Datasheet: www.analog.com/static/imported-files/data_sheets/ADM1272.pdf
* Analog Devices ADM1275
Prefix: 'adm1275'
Addresses scanned: -
......@@ -29,11 +33,11 @@ Author: Guenter Roeck <linux@roeck-us.net>
Description
-----------
This driver supports hardware monitoring for Analog Devices ADM1075, ADM1275,
ADM1276, ADM1278, ADM1293, and ADM1294 Hot-Swap Controller and Digital
Power Monitors.
This driver supports hardware monitoring for Analog Devices ADM1075, ADM1272,
ADM1275, ADM1276, ADM1278, ADM1293, and ADM1294 Hot-Swap Controller and
Digital Power Monitors.
ADM1075, ADM1275, ADM1276, ADM1278, ADM1293, and ADM1294 are hot-swap
ADM1075, ADM1272, ADM1275, ADM1276, ADM1278, ADM1293, and ADM1294 are hot-swap
controllers that allow a circuit board to be removed from or inserted into
a live backplane. They also feature current and voltage readback via an
integrated 12 bit analog-to-digital converter (ADC), accessed using a
......@@ -100,11 +104,10 @@ power1_input_lowest Lowest observed input power. ADM1293 and ADM1294 only.
power1_input_highest Highest observed input power.
power1_reset_history Write any value to reset history.
Power attributes are supported on ADM1075, ADM1276,
ADM1293, and ADM1294.
Power attributes are supported on ADM1075, ADM1272,
ADM1276, ADM1293, and ADM1294.
temp1_input Chip temperature.
Temperature attributes are only available on ADM1278.
temp1_max Maximum chip temperature.
temp1_max_alarm Temperature alarm.
temp1_crit Critical chip temperature.
......@@ -112,4 +115,5 @@ temp1_crit_alarm Critical temperature high alarm.
temp1_highest Highest observed temperature.
temp1_reset_history Write any value to reset history.
Temperature attributes are supported on ADM1278.
Temperature attributes are supported on ADM1272 and
ADM1278.
......@@ -31,8 +31,8 @@ config SENSORS_ADM1275
default n
help
If you say yes here you get hardware monitoring support for Analog
Devices ADM1075, ADM1275, ADM1276, ADM1278, ADM1293, and ADM1294
Hot-Swap Controller and Digital Power Monitors.
Devices ADM1075, ADM1272, ADM1275, ADM1276, ADM1278, ADM1293,
and ADM1294 Hot-Swap Controller and Digital Power Monitors.
This driver can also be built as a module. If so, the module will
be called adm1275.
......
......@@ -3,6 +3,7 @@
* and Digital Power Monitor
*
* Copyright (c) 2011 Ericsson AB.
* Copyright (c) 2018 Guenter Roeck
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
......@@ -24,7 +25,7 @@
#include <linux/bitops.h>
#include "pmbus.h"
enum chips { adm1075, adm1275, adm1276, adm1278, adm1293, adm1294 };
enum chips { adm1075, adm1272, adm1275, adm1276, adm1278, adm1293, adm1294 };
#define ADM1275_MFR_STATUS_IOUT_WARN2 BIT(0)
#define ADM1293_MFR_STATUS_VAUX_UV_WARN BIT(5)
......@@ -41,6 +42,8 @@ enum chips { adm1075, adm1275, adm1276, adm1278, adm1293, adm1294 };
#define ADM1075_IRANGE_25 BIT(3)
#define ADM1075_IRANGE_MASK (BIT(3) | BIT(4))
#define ADM1272_IRANGE BIT(0)
#define ADM1278_TEMP1_EN BIT(3)
#define ADM1278_VIN_EN BIT(2)
#define ADM1278_VOUT_EN BIT(1)
......@@ -105,6 +108,19 @@ static const struct coefficients adm1075_coefficients[] = {
[4] = { 4279, 0, -1 }, /* power, irange50 */
};
static const struct coefficients adm1272_coefficients[] = {
[0] = { 6770, 0, -2 }, /* voltage, vrange 60V */
[1] = { 4062, 0, -2 }, /* voltage, vrange 100V */
[2] = { 1326, 20480, -1 }, /* current, vsense range 15mV */
[3] = { 663, 20480, -1 }, /* current, vsense range 30mV */
[4] = { 3512, 0, -2 }, /* power, vrange 60V, irange 15mV */
[5] = { 21071, 0, -3 }, /* power, vrange 100V, irange 15mV */
[6] = { 17561, 0, -3 }, /* power, vrange 60V, irange 30mV */
[7] = { 10535, 0, -3 }, /* power, vrange 100V, irange 30mV */
[8] = { 42, 31871, -1 }, /* temperature */
};
static const struct coefficients adm1275_coefficients[] = {
[0] = { 19199, 0, -2 }, /* voltage, vrange set */
[1] = { 6720, 0, -1 }, /* voltage, vrange not set */
......@@ -335,6 +351,7 @@ static int adm1275_read_byte_data(struct i2c_client *client, int page, int reg)
static const struct i2c_device_id adm1275_id[] = {
{ "adm1075", adm1075 },
{ "adm1272", adm1272 },
{ "adm1275", adm1275 },
{ "adm1276", adm1276 },
{ "adm1278", adm1278 },
......@@ -451,6 +468,54 @@ static int adm1275_probe(struct i2c_client *client,
info->func[0] |=
PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT;
break;
case adm1272:
data->have_vout = true;
data->have_pin_max = true;
data->have_temp_max = true;
coefficients = adm1272_coefficients;
vindex = (config & ADM1275_VRANGE) ? 1 : 0;
cindex = (config & ADM1272_IRANGE) ? 3 : 2;
/* pindex depends on the combination of the above */
switch (config & (ADM1275_VRANGE | ADM1272_IRANGE)) {
case 0:
default:
pindex = 4;
break;
case ADM1275_VRANGE:
pindex = 5;
break;
case ADM1272_IRANGE:
pindex = 6;
break;
case ADM1275_VRANGE | ADM1272_IRANGE:
pindex = 7;
break;
}
tindex = 8;
info->func[0] |= PMBUS_HAVE_PIN | PMBUS_HAVE_STATUS_INPUT |
PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT;
/* Enable VOUT if not enabled (it is disabled by default) */
if (!(config & ADM1278_VOUT_EN)) {
config |= ADM1278_VOUT_EN;
ret = i2c_smbus_write_byte_data(client,
ADM1275_PMON_CONFIG,
config);
if (ret < 0) {
dev_err(&client->dev,
"Failed to enable VOUT monitoring\n");
return -ENODEV;
}
}
if (config & ADM1278_TEMP1_EN)
info->func[0] |=
PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP;
if (config & ADM1278_VIN_EN)
info->func[0] |= PMBUS_HAVE_VIN;
break;
case adm1275:
if (device_config & ADM1275_IOUT_WARN2_SELECT)
data->have_oc_fault = true;
......
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