hwmon: (pmbus/adm1275) Add support for ADM1276
ADM1276 is mostly compatible to ADM1275, with added support for input power measurement. Add support for it to the ADM1275 driver. Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com> Acked-by: Jean Delvare <khali@linux-fr.org>hifive-unleashed-5.1
Guenter Roeck
parent
c5e6763667
commit
5cf231a346
|
|
@ -6,6 +6,10 @@ Supported chips:
|
|||
Prefix: 'adm1275'
|
||||
Addresses scanned: -
|
||||
Datasheet: www.analog.com/static/imported-files/data_sheets/ADM1275.pdf
|
||||
* Analog Devices ADM1276
|
||||
Prefix: 'adm1276'
|
||||
Addresses scanned: -
|
||||
Datasheet: www.analog.com/static/imported-files/data_sheets/ADM1276.pdf
|
||||
|
||||
Author: Guenter Roeck <guenter.roeck@ericsson.com>
|
||||
|
||||
|
|
@ -13,13 +17,13 @@ Author: Guenter Roeck <guenter.roeck@ericsson.com>
|
|||
Description
|
||||
-----------
|
||||
|
||||
This driver supports hardware montoring for Analog Devices ADM1275 Hot-Swap
|
||||
Controller and Digital Power Monitor.
|
||||
This driver supports hardware montoring for Analog Devices ADM1275 and ADM1276
|
||||
Hot-Swap Controller and Digital Power Monitor.
|
||||
|
||||
The ADM1275 is a hot-swap controller that allows a circuit board to be removed
|
||||
from or inserted into a live backplane. It also features current and voltage
|
||||
readback via an integrated 12-bit analog-to-digital converter (ADC), accessed
|
||||
using a PMBus. interface.
|
||||
ADM1275 and ADM1276 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 PMBus interface.
|
||||
|
||||
The driver is a client driver to the core PMBus driver. Please see
|
||||
Documentation/hwmon/pmbus for details on PMBus client drivers.
|
||||
|
|
@ -48,18 +52,18 @@ attributes are write-only, all other attributes are read-only.
|
|||
|
||||
in1_label "vin1" or "vout1" depending on chip variant and
|
||||
configuration.
|
||||
in1_input Measured voltage. From READ_VOUT register.
|
||||
in1_min Minumum Voltage. From VOUT_UV_WARN_LIMIT register.
|
||||
in1_max Maximum voltage. From VOUT_OV_WARN_LIMIT register.
|
||||
in1_min_alarm Voltage low alarm. From VOLTAGE_UV_WARNING status.
|
||||
in1_max_alarm Voltage high alarm. From VOLTAGE_OV_WARNING status.
|
||||
in1_input Measured voltage.
|
||||
in1_min Minumum Voltage.
|
||||
in1_max Maximum voltage.
|
||||
in1_min_alarm Voltage low alarm.
|
||||
in1_max_alarm Voltage high alarm.
|
||||
in1_highest Historical maximum voltage.
|
||||
in1_reset_history Write any value to reset history.
|
||||
|
||||
curr1_label "iout1"
|
||||
curr1_input Measured current. From READ_IOUT register.
|
||||
curr1_max Maximum current. From IOUT_OC_WARN_LIMIT register.
|
||||
curr1_max_alarm Current high alarm. From IOUT_OC_WARN_LIMIT register.
|
||||
curr1_input Measured current.
|
||||
curr1_max Maximum current.
|
||||
curr1_max_alarm Current high alarm.
|
||||
curr1_lcrit Critical minimum current. Depending on the chip
|
||||
configuration, either curr1_lcrit or curr1_crit is
|
||||
supported, but not both.
|
||||
|
|
|
|||
|
|
@ -26,11 +26,12 @@ config SENSORS_PMBUS
|
|||
be called pmbus.
|
||||
|
||||
config SENSORS_ADM1275
|
||||
tristate "Analog Devices ADM1275"
|
||||
tristate "Analog Devices ADM1275 and compatibles"
|
||||
default n
|
||||
help
|
||||
If you say yes here you get hardware monitoring support for Analog
|
||||
Devices ADM1275 Hot-Swap Controller and Digital Power Monitor.
|
||||
Devices ADM1275 and ADM1276 Hot-Swap Controller and Digital Power
|
||||
Monitor.
|
||||
|
||||
This driver can also be built as a module. If so, the module will
|
||||
be called adm1275.
|
||||
|
|
|
|||
|
|
@ -23,6 +23,8 @@
|
|||
#include <linux/i2c.h>
|
||||
#include "pmbus.h"
|
||||
|
||||
enum chips { adm1275, adm1276 };
|
||||
|
||||
#define ADM1275_PEAK_IOUT 0xd0
|
||||
#define ADM1275_PEAK_VIN 0xd1
|
||||
#define ADM1275_PEAK_VOUT 0xd2
|
||||
|
|
@ -36,9 +38,12 @@
|
|||
|
||||
#define ADM1275_IOUT_WARN2_SELECT (1 << 4)
|
||||
|
||||
#define ADM1276_PEAK_PIN 0xda
|
||||
|
||||
#define ADM1275_MFR_STATUS_IOUT_WARN2 (1 << 0)
|
||||
|
||||
struct adm1275_data {
|
||||
int id;
|
||||
bool have_oc_fault;
|
||||
struct pmbus_driver_info info;
|
||||
};
|
||||
|
|
@ -49,7 +54,7 @@ static int adm1275_read_word_data(struct i2c_client *client, int page, int reg)
|
|||
{
|
||||
const struct pmbus_driver_info *info = pmbus_get_driver_info(client);
|
||||
const struct adm1275_data *data = to_adm1275_data(info);
|
||||
int ret;
|
||||
int ret = 0;
|
||||
|
||||
if (page)
|
||||
return -ENXIO;
|
||||
|
|
@ -78,10 +83,20 @@ static int adm1275_read_word_data(struct i2c_client *client, int page, int reg)
|
|||
case PMBUS_VIRT_READ_VIN_MAX:
|
||||
ret = pmbus_read_word_data(client, 0, ADM1275_PEAK_VIN);
|
||||
break;
|
||||
case PMBUS_VIRT_READ_PIN_MAX:
|
||||
if (data->id != adm1276) {
|
||||
ret = -ENXIO;
|
||||
break;
|
||||
}
|
||||
ret = pmbus_read_word_data(client, 0, ADM1276_PEAK_PIN);
|
||||
break;
|
||||
case PMBUS_VIRT_RESET_IOUT_HISTORY:
|
||||
case PMBUS_VIRT_RESET_VOUT_HISTORY:
|
||||
case PMBUS_VIRT_RESET_VIN_HISTORY:
|
||||
ret = 0;
|
||||
break;
|
||||
case PMBUS_VIRT_RESET_PIN_HISTORY:
|
||||
if (data->id != adm1276)
|
||||
ret = -ENXIO;
|
||||
break;
|
||||
default:
|
||||
ret = -ENODATA;
|
||||
|
|
@ -113,6 +128,9 @@ static int adm1275_write_word_data(struct i2c_client *client, int page, int reg,
|
|||
case PMBUS_VIRT_RESET_VIN_HISTORY:
|
||||
ret = pmbus_write_word_data(client, 0, ADM1275_PEAK_VIN, 0);
|
||||
break;
|
||||
case PMBUS_VIRT_RESET_PIN_HISTORY:
|
||||
ret = pmbus_write_word_data(client, 0, ADM1276_PEAK_PIN, 0);
|
||||
break;
|
||||
default:
|
||||
ret = -ENODATA;
|
||||
break;
|
||||
|
|
@ -180,6 +198,7 @@ static int adm1275_probe(struct i2c_client *client,
|
|||
goto err_mem;
|
||||
}
|
||||
|
||||
data->id = id->driver_data;
|
||||
info = &data->info;
|
||||
|
||||
info->pages = 1;
|
||||
|
|
@ -214,10 +233,33 @@ static int adm1275_probe(struct i2c_client *client,
|
|||
if (device_config & ADM1275_IOUT_WARN2_SELECT)
|
||||
data->have_oc_fault = true;
|
||||
|
||||
if (config & ADM1275_VIN_VOUT_SELECT)
|
||||
info->func[0] |= PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT;
|
||||
else
|
||||
info->func[0] |= PMBUS_HAVE_VIN | PMBUS_HAVE_STATUS_INPUT;
|
||||
switch (id->driver_data) {
|
||||
case adm1275:
|
||||
if (config & ADM1275_VIN_VOUT_SELECT)
|
||||
info->func[0] |=
|
||||
PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT;
|
||||
else
|
||||
info->func[0] |=
|
||||
PMBUS_HAVE_VIN | PMBUS_HAVE_STATUS_INPUT;
|
||||
break;
|
||||
case adm1276:
|
||||
info->format[PSC_POWER] = direct;
|
||||
info->func[0] |= PMBUS_HAVE_VIN | PMBUS_HAVE_PIN
|
||||
| PMBUS_HAVE_STATUS_INPUT;
|
||||
if (config & ADM1275_VIN_VOUT_SELECT)
|
||||
info->func[0] |=
|
||||
PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT;
|
||||
if (config & ADM1275_VRANGE) {
|
||||
info->m[PSC_POWER] = 6043;
|
||||
info->b[PSC_POWER] = 0;
|
||||
info->R[PSC_POWER] = -2;
|
||||
} else {
|
||||
info->m[PSC_POWER] = 2115;
|
||||
info->b[PSC_POWER] = 0;
|
||||
info->R[PSC_POWER] = -1;
|
||||
}
|
||||
break;
|
||||
}
|
||||
|
||||
ret = pmbus_do_probe(client, id, info);
|
||||
if (ret)
|
||||
|
|
@ -240,7 +282,8 @@ static int adm1275_remove(struct i2c_client *client)
|
|||
}
|
||||
|
||||
static const struct i2c_device_id adm1275_id[] = {
|
||||
{"adm1275", 0},
|
||||
{ "adm1275", adm1275 },
|
||||
{ "adm1276", adm1276 },
|
||||
{ }
|
||||
};
|
||||
MODULE_DEVICE_TABLE(i2c, adm1275_id);
|
||||
|
|
@ -265,7 +308,7 @@ static void __exit adm1275_exit(void)
|
|||
}
|
||||
|
||||
MODULE_AUTHOR("Guenter Roeck");
|
||||
MODULE_DESCRIPTION("PMBus driver for Analog Devices ADM1275");
|
||||
MODULE_DESCRIPTION("PMBus driver for Analog Devices ADM1275 and compatibles");
|
||||
MODULE_LICENSE("GPL");
|
||||
module_init(adm1275_init);
|
||||
module_exit(adm1275_exit);
|
||||
|
|
|
|||
Loading…
Reference in New Issue