Skip to content

Commit

Permalink
---
Browse files Browse the repository at this point in the history
yaml
---
r: 267263
b: refs/heads/master
c: 5cf231a
h: refs/heads/master
i:
  267261: 34f70ee
  267259: 6133041
  267255: bc50e50
  267247: b381619
  267231: 95a8aa8
  267199: 510bdd3
  267135: 98ad9b9
  267007: 0a25e4a
  266751: 298bff5
  266239: 79d1193
v: v3
  • Loading branch information
Guenter Roeck committed Oct 24, 2011
1 parent 10b4497 commit ed20d5e
Show file tree
Hide file tree
Showing 4 changed files with 73 additions and 25 deletions.
2 changes: 1 addition & 1 deletion [refs]
Original file line number Diff line number Diff line change
@@ -1,2 +1,2 @@
---
refs/heads/master: c5e6763667ffc94eaad4634841cb1b7ecd951fb7
refs/heads/master: 5cf231a346fb80d7945aa46e90186a068a3a001b
32 changes: 18 additions & 14 deletions trunk/Documentation/hwmon/adm1275
Original file line number Diff line number Diff line change
Expand Up @@ -6,20 +6,24 @@ 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>


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.
Expand Down Expand Up @@ -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.
Expand Down
5 changes: 3 additions & 2 deletions trunk/drivers/hwmon/pmbus/Kconfig
Original file line number Diff line number Diff line change
Expand Up @@ -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.
Expand Down
59 changes: 51 additions & 8 deletions trunk/drivers/hwmon/pmbus/adm1275.c
Original file line number Diff line number Diff line change
Expand Up @@ -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
Expand All @@ -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;
};
Expand All @@ -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;
Expand Down Expand Up @@ -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;
Expand Down Expand Up @@ -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;
Expand Down Expand Up @@ -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;
Expand Down Expand Up @@ -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)
Expand All @@ -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);
Expand All @@ -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);

0 comments on commit ed20d5e

Please sign in to comment.