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hwmon updates for 3.5-rc1 

New driver for INA219 and INA226, added support for IT8782F and IT8783E/F to
 it87 driver, plus cleanups in a couple of drivers.
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Merge tag 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging

Pull hwmon updates from Guenter Roeck:
 "New driver for INA219 and INA226, added support for IT8782F and
  IT8783E/F to it87 driver, plus cleanups in a couple of drivers."

* tag 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging:
  hwmon: (it87) Make temp3 attribute conditional for IT8782F
  hwmon: (it87) Convert to use devm_kzalloc and devm_request_region
  hwmon: INA219 and INA226 support
  hwmon: (it87) Create voltage attributes only if voltage is enabled
  hwmon: (ntc_thermistor) Fix checkpatch warning
  hwmon: (ntc_thermistor) Optimize and fix build warning
  hwmon: (ntc_thermistor) Return error code from hwmon_device_register
  hwmon: (ntc_thermistor) Convert to devm_kzalloc
  hwmon: (ad7314) Remove unused defines, and rename OFFSET to SHIFT
  acpi_power_meter: clean up code around setup_attrs
  acpi_power_meter: drop meter_rw_attrs, use common meter_attrs
  acpi_power_meter: remove duplicate code between register_{ro,rw}_attrs
  acpi_power_meter: use a {RW,RO}_SENSOR_TEMPLATE macro to clean things up
  acpi_power_meter: use the same struct {rw,ro}_sensor_template for both
  hwmon: use module_pci_driver
  hwmon: (it87) Add support for IT8782F and IT8783E/F
This commit is contained in:
Linus Torvalds 2012-05-23 14:15:09 -07:00
parent 468f4d1a85 4573acbc46
commit 1259f6ee15
13 changed files with 904 additions and 349 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

29
Documentation/hwmon/ina2xx Normal file
View File

@ -0,0 +1,29 @@
Kernel driver ina2xx
====================
Supported chips:
* Texas Instruments INA219
Prefix: 'ina219'
Addresses: I2C 0x40 - 0x4f
Datasheet: Publicly available at the Texas Instruments website
http://www.ti.com/
* Texas Instruments INA226
Prefix: 'ina226'
Addresses: I2C 0x40 - 0x4f
Datasheet: Publicly available at the Texas Instruments website
http://www.ti.com/
Author: Lothar Felten <l-felten@ti.com>
Description
-----------
The INA219 is a high-side current shunt and power monitor with an I2C
interface. The INA219 monitors both shunt drop and supply voltage, with
programmable conversion times and filtering.
The INA226 is a current shunt and power monitor with an I2C interface.
The INA226 monitors both a shunt voltage drop and bus supply voltage.
The shunt value in micro-ohms can be set via platform data.

28
Documentation/hwmon/it87
View File

@ -30,6 +30,14 @@ Supported chips:
Prefix: 'it8728'
Addresses scanned: from Super I/O config space (8 I/O ports)
Datasheet: Not publicly available
* IT8782F
Prefix: 'it8782'
Addresses scanned: from Super I/O config space (8 I/O ports)
Datasheet: Not publicly available
* IT8783E/F
Prefix: 'it8783'
Addresses scanned: from Super I/O config space (8 I/O ports)
Datasheet: Not publicly available
* SiS950 [clone of IT8705F]
Prefix: 'it87'
Addresses scanned: from Super I/O config space (8 I/O ports)
@ -75,7 +83,8 @@ Description
-----------
This driver implements support for the IT8705F, IT8712F, IT8716F,
IT8718F, IT8720F, IT8721F, IT8726F, IT8728F, IT8758E and SiS950 chips.
IT8718F, IT8720F, IT8721F, IT8726F, IT8728F, IT8758E, IT8781F, IT8782F,
IT8783E/F, and SiS950 chips.
These chips are 'Super I/O chips', supporting floppy disks, infrared ports,
joysticks and other miscellaneous stuff. For hardware monitoring, they
@ -99,11 +108,11 @@ The IT8716F, IT8718F, IT8720F, IT8721F/IT8758E and later IT8712F revisions
have support for 2 additional fans. The additional fans are supported by the
driver.
The IT8716F, IT8718F, IT8720F and IT8721F/IT8758E, and late IT8712F and
IT8705F also have optional 16-bit tachometer counters for fans 1 to 3. This
is better (no more fan clock divider mess) but not compatible with the older
chips and revisions. The 16-bit tachometer mode is enabled by the driver when
one of the above chips is detected.
The IT8716F, IT8718F, IT8720F, IT8721F/IT8758E, IT8782F, IT8783E/F, and late
IT8712F and IT8705F also have optional 16-bit tachometer counters for fans 1 to
3. This is better (no more fan clock divider mess) but not compatible with the
older chips and revisions. The 16-bit tachometer mode is enabled by the driver
when one of the above chips is detected.
The IT8726F is just bit enhanced IT8716F with additional hardware
for AMD power sequencing. Therefore the chip will appear as IT8716F
@ -131,9 +140,10 @@ inputs can measure voltages between 0 and 4.08 volts, with a resolution of
0.016 volt (except IT8721F/IT8758E and IT8728F: 0.012 volt.) The battery
voltage in8 does not have limit registers.
On the IT8721F/IT8758E, some voltage inputs are internal and scaled inside
the chip (in7, in8 and optionally in3). The driver handles this transparently
so user-space doesn't have to care.
On the IT8721F/IT8758E, IT8782F, and IT8783E/F, some voltage inputs are
internal and scaled inside the chip (in7 (optional for IT8782F and IT8783E/F),
in8 and optionally in3). The driver handles this transparently so user-space
doesn't have to care.
The VID lines (IT8712F/IT8716F/IT8718F/IT8720F) encode the core voltage value:
the voltage level your processor should work with. This is hardcoded by

13
drivers/hwmon/Kconfig
View File

@ -1102,6 +1102,19 @@ config SENSORS_AMC6821
This driver can also be build as a module. If so, the module
will be called amc6821.
config SENSORS_INA2XX
tristate "Texas Instruments INA219, INA226"
depends on I2C && EXPERIMENTAL
help
If you say yes here you get support for INA219 and INA226 power
monitor chips.
The INA2xx driver is configured for the default configuration of
the part as described in the datasheet.
Default value for Rshunt is 10 mOhms.
This driver can also be built as a module. If so, the module
will be called ina2xx.
config SENSORS_THMC50
tristate "Texas Instruments THMC50 / Analog Devices ADM1022"
depends on I2C

1
drivers/hwmon/Makefile
View File

@ -62,6 +62,7 @@ obj-$(CONFIG_SENSORS_ULTRA45) += ultra45_env.o
obj-$(CONFIG_SENSORS_I5K_AMB) += i5k_amb.o
obj-$(CONFIG_SENSORS_IBMAEM) += ibmaem.o
obj-$(CONFIG_SENSORS_IBMPEX) += ibmpex.o
obj-$(CONFIG_SENSORS_INA2XX) += ina2xx.o
obj-$(CONFIG_SENSORS_IT87) += it87.o
obj-$(CONFIG_SENSORS_JC42) += jc42.o
obj-$(CONFIG_SENSORS_JZ4740) += jz4740-hwmon.o

170
drivers/hwmon/acpi_power_meter.c
View File

@ -107,15 +107,7 @@ struct acpi_power_meter_resource {
struct kobject *holders_dir;
};
struct ro_sensor_template {
char *label;
ssize_t (*show)(struct device *dev,
struct device_attribute *devattr,
char *buf);
int index;
};
struct rw_sensor_template {
struct sensor_template {
char *label;
ssize_t (*show)(struct device *dev,
struct device_attribute *devattr,
@ -469,52 +461,67 @@ static ssize_t show_name(struct device *dev,
return sprintf(buf, "%s\n", ACPI_POWER_METER_NAME);
}
#define RO_SENSOR_TEMPLATE(_label, _show, _index) \
{ \
.label = _label, \
.show = _show, \
.index = _index, \
}
#define RW_SENSOR_TEMPLATE(_label, _show, _set, _index) \
{ \
.label = _label, \
.show = _show, \
.set = _set, \
.index = _index, \
}
/* Sensor descriptions. If you add a sensor, update NUM_SENSORS above! */
static struct ro_sensor_template meter_ro_attrs[] = {
{POWER_AVERAGE_NAME, show_power, 0},
{"power1_accuracy", show_accuracy, 0},
{"power1_average_interval_min", show_val, 0},
{"power1_average_interval_max", show_val, 1},
{"power1_is_battery", show_val, 5},
{NULL, NULL, 0},
static struct sensor_template meter_attrs[] = {
RO_SENSOR_TEMPLATE(POWER_AVERAGE_NAME, show_power, 0),
RO_SENSOR_TEMPLATE("power1_accuracy", show_accuracy, 0),
RO_SENSOR_TEMPLATE("power1_average_interval_min", show_val, 0),
RO_SENSOR_TEMPLATE("power1_average_interval_max", show_val, 1),
RO_SENSOR_TEMPLATE("power1_is_battery", show_val, 5),
RW_SENSOR_TEMPLATE(POWER_AVG_INTERVAL_NAME, show_avg_interval,
set_avg_interval, 0),
{},
};
static struct rw_sensor_template meter_rw_attrs[] = {
{POWER_AVG_INTERVAL_NAME, show_avg_interval, set_avg_interval, 0},
{NULL, NULL, NULL, 0},
static struct sensor_template misc_cap_attrs[] = {
RO_SENSOR_TEMPLATE("power1_cap_min", show_val, 2),
RO_SENSOR_TEMPLATE("power1_cap_max", show_val, 3),
RO_SENSOR_TEMPLATE("power1_cap_hyst", show_val, 4),
RO_SENSOR_TEMPLATE(POWER_ALARM_NAME, show_val, 6),
{},
};
static struct ro_sensor_template misc_cap_attrs[] = {
{"power1_cap_min", show_val, 2},
{"power1_cap_max", show_val, 3},
{"power1_cap_hyst", show_val, 4},
{POWER_ALARM_NAME, show_val, 6},
{NULL, NULL, 0},
static struct sensor_template ro_cap_attrs[] = {
RO_SENSOR_TEMPLATE(POWER_CAP_NAME, show_cap, 0),
{},
};
static struct ro_sensor_template ro_cap_attrs[] = {
{POWER_CAP_NAME, show_cap, 0},
{NULL, NULL, 0},
static struct sensor_template rw_cap_attrs[] = {
RW_SENSOR_TEMPLATE(POWER_CAP_NAME, show_cap, set_cap, 0),
{},
};
static struct rw_sensor_template rw_cap_attrs[] = {
{POWER_CAP_NAME, show_cap, set_cap, 0},
{NULL, NULL, NULL, 0},
static struct sensor_template trip_attrs[] = {
RW_SENSOR_TEMPLATE("power1_average_min", show_val, set_trip, 7),
RW_SENSOR_TEMPLATE("power1_average_max", show_val, set_trip, 8),
{},
};
static struct rw_sensor_template trip_attrs[] = {
{"power1_average_min", show_val, set_trip, 7},
{"power1_average_max", show_val, set_trip, 8},
{NULL, NULL, NULL, 0},
static struct sensor_template misc_attrs[] = {
RO_SENSOR_TEMPLATE("name", show_name, 0),
RO_SENSOR_TEMPLATE("power1_model_number", show_str, 0),
RO_SENSOR_TEMPLATE("power1_oem_info", show_str, 2),
RO_SENSOR_TEMPLATE("power1_serial_number", show_str, 1),
{},
};
static struct ro_sensor_template misc_attrs[] = {
{"name", show_name, 0},
{"power1_model_number", show_str, 0},
{"power1_oem_info", show_str, 2},
{"power1_serial_number", show_str, 1},
{NULL, NULL, 0},
};
#undef RO_SENSOR_TEMPLATE
#undef RW_SENSOR_TEMPLATE
/* Read power domain data */
static void remove_domain_devices(struct acpi_power_meter_resource *resource)
@ -619,19 +626,24 @@ end:
}
/* Registration and deregistration */
static int register_ro_attrs(struct acpi_power_meter_resource *resource,
struct ro_sensor_template *ro)
static int register_attrs(struct acpi_power_meter_resource *resource,
struct sensor_template *attrs)
{
struct device *dev = &resource->acpi_dev->dev;
struct sensor_device_attribute *sensors =
&resource->sensors[resource->num_sensors];
int res = 0;
while (ro->label) {
sensors->dev_attr.attr.name = ro->label;
while (attrs->label) {
sensors->dev_attr.attr.name = attrs->label;
sensors->dev_attr.attr.mode = S_IRUGO;
sensors->dev_attr.show = ro->show;
sensors->index = ro->index;
sensors->dev_attr.show = attrs->show;
sensors->index = attrs->index;
if (attrs->set) {
sensors->dev_attr.attr.mode |= S_IWUSR;
sensors->dev_attr.store = attrs->set;
}
sysfs_attr_init(&sensors->dev_attr.attr);
res = device_create_file(dev, &sensors->dev_attr);
@ -641,37 +653,7 @@ static int register_ro_attrs(struct acpi_power_meter_resource *resource,
}
sensors++;
resource->num_sensors++;
ro++;
}
error:
return res;
}
static int register_rw_attrs(struct acpi_power_meter_resource *resource,
struct rw_sensor_template *rw)
{
struct device *dev = &resource->acpi_dev->dev;
struct sensor_device_attribute *sensors =
&resource->sensors[resource->num_sensors];
int res = 0;
while (rw->label) {
sensors->dev_attr.attr.name = rw->label;
sensors->dev_attr.attr.mode = S_IRUGO | S_IWUSR;
sensors->dev_attr.show = rw->show;
sensors->dev_attr.store = rw->set;
sensors->index = rw->index;
sysfs_attr_init(&sensors->dev_attr.attr);
res = device_create_file(dev, &sensors->dev_attr);
if (res) {
sensors->dev_attr.attr.name = NULL;
goto error;
}
sensors++;
resource->num_sensors++;
rw++;
attrs++;
}
error:
@ -703,10 +685,7 @@ static int setup_attrs(struct acpi_power_meter_resource *resource)
return res;
if (resource->caps.flags & POWER_METER_CAN_MEASURE) {
res = register_ro_attrs(resource, meter_ro_attrs);
if (res)
goto error;
res = register_rw_attrs(resource, meter_rw_attrs);
res = register_attrs(resource, meter_attrs);
if (res)
goto error;
}
@ -718,28 +697,27 @@ static int setup_attrs(struct acpi_power_meter_resource *resource)
goto skip_unsafe_cap;
}
if (resource->caps.configurable_cap) {
res = register_rw_attrs(resource, rw_cap_attrs);
if (res)
goto error;
} else {
res = register_ro_attrs(resource, ro_cap_attrs);
if (res)
goto error;
}
res = register_ro_attrs(resource, misc_cap_attrs);
if (resource->caps.configurable_cap)
res = register_attrs(resource, rw_cap_attrs);
else
res = register_attrs(resource, ro_cap_attrs);
if (res)
goto error;
res = register_attrs(resource, misc_cap_attrs);
if (res)
goto error;
}
skip_unsafe_cap:
if (resource->caps.flags & POWER_METER_CAN_TRIP) {
res = register_rw_attrs(resource, trip_attrs);
res = register_attrs(resource, trip_attrs);
if (res)
goto error;
}
res = register_ro_attrs(resource, misc_attrs);
res = register_attrs(resource, misc_attrs);
if (res)
goto error;

11
drivers/hwmon/ad7314.c
View File

@ -17,22 +17,15 @@
#include <linux/hwmon.h>
#include <linux/hwmon-sysfs.h>
/*
* AD7314 power mode
*/
#define AD7314_PD 0x2000
/*
* AD7314 temperature masks
*/
#define AD7314_TEMP_SIGN 0x200
#define AD7314_TEMP_MASK 0x7FE0
#define AD7314_TEMP_OFFSET 5
#define AD7314_TEMP_SHIFT 5
/*
* ADT7301 and ADT7302 temperature masks
*/
#define ADT7301_TEMP_SIGN 0x2000
#define ADT7301_TEMP_MASK 0x3FFF
enum ad7314_variant {
@ -73,7 +66,7 @@ static ssize_t ad7314_show_temperature(struct device *dev,
return ret;
switch (spi_get_device_id(chip->spi_dev)->driver_data) {
case ad7314:
data = (ret & AD7314_TEMP_MASK) >> AD7314_TEMP_OFFSET;
data = (ret & AD7314_TEMP_MASK) >> AD7314_TEMP_SHIFT;
data = (data << 6) >> 6;
return sprintf(buf, "%d\n", 250 * data);

13
drivers/hwmon/fam15h_power.c
View File

@ -257,15 +257,4 @@ static struct pci_driver fam15h_power_driver = {
.remove = __devexit_p(fam15h_power_remove),
};
static int __init fam15h_power_init(void)
{
return pci_register_driver(&fam15h_power_driver);
}
static void __exit fam15h_power_exit(void)
{
pci_unregister_driver(&fam15h_power_driver);
}
module_init(fam15h_power_init)
module_exit(fam15h_power_exit)
module_pci_driver(fam15h_power_driver);

368
drivers/hwmon/ina2xx.c Normal file
View File

@ -0,0 +1,368 @@
/*
* Driver for Texas Instruments INA219, INA226 power monitor chips
*
* INA219:
* Zero Drift Bi-Directional Current/Power Monitor with I2C Interface
* Datasheet: http://www.ti.com/product/ina219
*
* INA226:
* Bi-Directional Current/Power Monitor with I2C Interface
* Datasheet: http://www.ti.com/product/ina226
*
* Copyright (C) 2012 Lothar Felten <l-felten@ti.com>
* Thanks to Jan Volkering
*
* 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
* the Free Software Foundation; version 2 of the License.
*/
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/err.h>
#include <linux/slab.h>
#include <linux/i2c.h>
#include <linux/hwmon.h>
#include <linux/hwmon-sysfs.h>
#include <linux/platform_data/ina2xx.h>
/* common register definitions */
#define INA2XX_CONFIG 0x00
#define INA2XX_SHUNT_VOLTAGE 0x01 /* readonly */
#define INA2XX_BUS_VOLTAGE 0x02 /* readonly */
#define INA2XX_POWER 0x03 /* readonly */
#define INA2XX_CURRENT 0x04 /* readonly */
#define INA2XX_CALIBRATION 0x05
/* INA226 register definitions */
#define INA226_MASK_ENABLE 0x06
#define INA226_ALERT_LIMIT 0x07
#define INA226_DIE_ID 0xFF
/* register count */
#define INA219_REGISTERS 6
#define INA226_REGISTERS 8
#define INA2XX_MAX_REGISTERS 8
/* settings - depend on use case */
#define INA219_CONFIG_DEFAULT 0x399F /* PGA=8 */
#define INA226_CONFIG_DEFAULT 0x4527 /* averages=16 */
/* worst case is 68.10 ms (~14.6Hz, ina219) */
#define INA2XX_CONVERSION_RATE 15
enum ina2xx_ids { ina219, ina226 };
struct ina2xx_data {
struct device *hwmon_dev;
struct mutex update_lock;
bool valid;
unsigned long last_updated;
int kind;
int registers;
u16 regs[INA2XX_MAX_REGISTERS];
};
int ina2xx_read_word(struct i2c_client *client, int reg)
{
int val = i2c_smbus_read_word_data(client, reg);
if (unlikely(val < 0)) {
dev_dbg(&client->dev,
"Failed to read register: %d\n", reg);
return val;
}
return be16_to_cpu(val);
}
void ina2xx_write_word(struct i2c_client *client, int reg, int data)
{
i2c_smbus_write_word_data(client, reg, cpu_to_be16(data));
}
static struct ina2xx_data *ina2xx_update_device(struct device *dev)
{
struct i2c_client *client = to_i2c_client(dev);
struct ina2xx_data *data = i2c_get_clientdata(client);
struct ina2xx_data *ret = data;
mutex_lock(&data->update_lock);
if (time_after(jiffies, data->last_updated +
HZ / INA2XX_CONVERSION_RATE) || !data->valid) {
int i;
dev_dbg(&client->dev, "Starting ina2xx update\n");
/* Read all registers */
for (i = 0; i < data->registers; i++) {
int rv = ina2xx_read_word(client, i);
if (rv < 0) {
ret = ERR_PTR(rv);
goto abort;
}
data->regs[i] = rv;
}
data->last_updated = jiffies;
data->valid = 1;
}
abort:
mutex_unlock(&data->update_lock);
return ret;
}
static int ina219_get_value(struct ina2xx_data *data, u8 reg)
{
/*
* calculate exact value for the given register
* we assume default power-on reset settings:
* bus voltage range 32V
* gain = /8
* adc 1 & 2 -> conversion time 532uS
* mode is continuous shunt and bus
* calibration value is INA219_CALIBRATION_VALUE
*/
int val = data->regs[reg];
switch (reg) {
case INA2XX_SHUNT_VOLTAGE:
/* LSB=10uV. Convert to mV. */
val = DIV_ROUND_CLOSEST(val, 100);
break;
case INA2XX_BUS_VOLTAGE:
/* LSB=4mV. Register is not right aligned, convert to mV. */
val = (val >> 3) * 4;
break;
case INA2XX_POWER:
/* LSB=20mW. Convert to uW */
val = val * 20 * 1000;
break;
case INA2XX_CURRENT:
/* LSB=1mA (selected). Is in mA */
break;
default:
/* programmer goofed */
WARN_ON_ONCE(1);
val = 0;
break;
}
return val;
}
static int ina226_get_value(struct ina2xx_data *data, u8 reg)
{
/*
* calculate exact value for the given register
* we assume default power-on reset settings:
* bus voltage range 32V
* gain = /8
* adc 1 & 2 -> conversion time 532uS
* mode is continuous shunt and bus
* calibration value is INA226_CALIBRATION_VALUE
*/
int val = data->regs[reg];
switch (reg) {
case INA2XX_SHUNT_VOLTAGE:
/* LSB=2.5uV. Convert to mV. */
val = DIV_ROUND_CLOSEST(val, 400);
break;
case INA2XX_BUS_VOLTAGE:
/* LSB=1.25mV. Convert to mV. */
val = val + DIV_ROUND_CLOSEST(val, 4);
break;
case INA2XX_POWER:
/* LSB=25mW. Convert to uW */
val = val * 25 * 1000;
break;
case INA2XX_CURRENT:
/* LSB=1mA (selected). Is in mA */
break;
default:
/* programmer goofed */
WARN_ON_ONCE(1);
val = 0;
break;
}
return val;
}
static ssize_t ina2xx_show_value(struct device *dev,
struct device_attribute *da, char *buf)
{
struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
struct ina2xx_data *data = ina2xx_update_device(dev);
int value = 0;
if (IS_ERR(data))
return PTR_ERR(data);
switch (data->kind) {
case ina219:
value = ina219_get_value(data, attr->index);
break;
case ina226:
value = ina226_get_value(data, attr->index);
break;
default:
WARN_ON_ONCE(1);
break;
}
return snprintf(buf, PAGE_SIZE, "%d\n", value);
}
/* shunt voltage */
static SENSOR_DEVICE_ATTR(in0_input, S_IRUGO, \
ina2xx_show_value, NULL, INA2XX_SHUNT_VOLTAGE);
/* bus voltage */
static SENSOR_DEVICE_ATTR(in1_input, S_IRUGO, \
ina2xx_show_value, NULL, INA2XX_BUS_VOLTAGE);
/* calculated current */
static SENSOR_DEVICE_ATTR(curr1_input, S_IRUGO, \
ina2xx_show_value, NULL, INA2XX_CURRENT);
/* calculated power */
static SENSOR_DEVICE_ATTR(power1_input, S_IRUGO, \
ina2xx_show_value, NULL, INA2XX_POWER);
/* pointers to created device attributes */
static struct attribute *ina2xx_attributes[] = {
&sensor_dev_attr_in0_input.dev_attr.attr,
&sensor_dev_attr_in1_input.dev_attr.attr,
&sensor_dev_attr_curr1_input.dev_attr.attr,
&sensor_dev_attr_power1_input.dev_attr.attr,
NULL,
};
static const struct attribute_group ina2xx_group = {
.attrs = ina2xx_attributes,
};
static int ina2xx_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
struct i2c_adapter *adapter = client->adapter;
struct ina2xx_data *data;
struct ina2xx_platform_data *pdata;
int ret = 0;
long shunt = 10000; /* default shunt value 10mOhms */
if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_WORD_DATA))
return -ENODEV;
data = devm_kzalloc(&client->dev, sizeof(*data), GFP_KERNEL);
if (!data)
return -ENOMEM;
if (client->dev.platform_data) {
pdata =
(struct ina2xx_platform_data *)client->dev.platform_data;
shunt = pdata->shunt_uohms;
}
if (shunt <= 0)
return -ENODEV;
/* set the device type */
data->kind = id->driver_data;
switch (data->kind) {
case ina219:
/* device configuration */
ina2xx_write_word(client, INA2XX_CONFIG, INA219_CONFIG_DEFAULT);
/* set current LSB to 1mA, shunt is in uOhms */
/* (equation 13 in datasheet) */
ina2xx_write_word(client, INA2XX_CALIBRATION, 40960000 / shunt);
dev_info(&client->dev,
"power monitor INA219 (Rshunt = %li uOhm)\n", shunt);
data->registers = INA219_REGISTERS;
break;
case ina226:
/* device configuration */
ina2xx_write_word(client, INA2XX_CONFIG, INA226_CONFIG_DEFAULT);
/* set current LSB to 1mA, shunt is in uOhms */
/* (equation 1 in datasheet)*/
ina2xx_write_word(client, INA2XX_CALIBRATION, 5120000 / shunt);
dev_info(&client->dev,
"power monitor INA226 (Rshunt = %li uOhm)\n", shunt);
data->registers = INA226_REGISTERS;
break;
default:
/* unknown device id */
return -ENODEV;
}
i2c_set_clientdata(client, data);
mutex_init(&data->update_lock);
ret = sysfs_create_group(&client->dev.kobj, &ina2xx_group);
if (ret)
return ret;
data->hwmon_dev = hwmon_device_register(&client->dev);
if (IS_ERR(data->hwmon_dev)) {
ret = PTR_ERR(data->hwmon_dev);
goto out_err_hwmon;
}
return 0;
out_err_hwmon:
sysfs_remove_group(&client->dev.kobj, &ina2xx_group);
return ret;
}
static int ina2xx_remove(struct i2c_client *client)
{
struct ina2xx_data *data = i2c_get_clientdata(client);
hwmon_device_unregister(data->hwmon_dev);
sysfs_remove_group(&client->dev.kobj, &ina2xx_group);
return 0;
}
static const struct i2c_device_id ina2xx_id[] = {
{ "ina219", ina219 },
{ "ina226", ina226 },
{ }
};
MODULE_DEVICE_TABLE(i2c, ina2xx_id);
static struct i2c_driver ina2xx_driver = {
.driver = {
.name = "ina2xx",
},
.probe = ina2xx_probe,
.remove = ina2xx_remove,
.id_table = ina2xx_id,
};
static int __init ina2xx_init(void)
{
return i2c_add_driver(&ina2xx_driver);
}
static void __exit ina2xx_exit(void)
{
i2c_del_driver(&ina2xx_driver);
}
MODULE_AUTHOR("Lothar Felten <l-felten@ti.com>");
MODULE_DESCRIPTION("ina2xx driver");
MODULE_LICENSE("GPL");
module_init(ina2xx_init);
module_exit(ina2xx_exit);

386
drivers/hwmon/it87.c
View File

@ -19,6 +19,8 @@
* IT8726F Super I/O chip w/LPC interface
* IT8728F Super I/O chip w/LPC interface
* IT8758E Super I/O chip w/LPC interface
* IT8782F Super I/O chip w/LPC interface
* IT8783E/F Super I/O chip w/LPC interface
* Sis950 A clone of the IT8705F
*
* Copyright (C) 2001 Chris Gauthron
@ -59,7 +61,8 @@
#define DRVNAME "it87"
enum chips { it87, it8712, it8716, it8718, it8720, it8721, it8728 };
enum chips { it87, it8712, it8716, it8718, it8720, it8721, it8728, it8782,
it8783 };
static unsigned short force_id;
module_param(force_id, ushort, 0);
@ -137,13 +140,18 @@ static inline void superio_exit(void)
#define IT8721F_DEVID 0x8721
#define IT8726F_DEVID 0x8726
#define IT8728F_DEVID 0x8728
#define IT8782F_DEVID 0x8782
#define IT8783E_DEVID 0x8783
#define IT87_ACT_REG 0x30
#define IT87_BASE_REG 0x60
/* Logical device 7 registers (IT8712F and later) */
#define IT87_SIO_GPIO1_REG 0x25
#define IT87_SIO_GPIO3_REG 0x27
#define IT87_SIO_GPIO5_REG 0x29
#define IT87_SIO_PINX1_REG 0x2a /* Pin selection */
#define IT87_SIO_PINX2_REG 0x2c /* Pin selection */
#define IT87_SIO_SPI_REG 0xef /* SPI function pin select */
#define IT87_SIO_VID_REG 0xfc /* VID value */
#define IT87_SIO_BEEP_PIN_REG 0xf6 /* Beep pin mapping */
@ -210,6 +218,7 @@ static const u8 IT87_REG_FANX_MIN[] = { 0x1b, 0x1c, 0x1d, 0x85, 0x87 };
#define IT87_REG_VIN_ENABLE 0x50
#define IT87_REG_TEMP_ENABLE 0x51
#define IT87_REG_TEMP_EXTRA 0x55
#define IT87_REG_BEEP_ENABLE 0x5c
#define IT87_REG_CHIPID 0x58
@ -226,9 +235,11 @@ struct it87_sio_data {
u8 beep_pin;
u8 internal; /* Internal sensors can be labeled */
/* Features skipped based on config or DMI */
u16 skip_in;
u8 skip_vid;
u8 skip_fan;
u8 skip_pwm;
u8 skip_temp;
};
/*
@ -253,6 +264,7 @@ struct it87_data {
u8 has_fan; /* Bitfield, fans enabled */
u16 fan[5]; /* Register values, possibly combined */
u16 fan_min[5]; /* Register values, possibly combined */
u8 has_temp; /* Bitfield, temp sensors enabled */
s8 temp[3]; /* Register value */
s8 temp_high[3]; /* Register value */
s8 temp_low[3]; /* Register value */
@ -304,31 +316,23 @@ static inline int has_newer_autopwm(const struct it87_data *data)
|| data->type == it8728;
}
static int adc_lsb(const struct it87_data *data, int nr)
{
int lsb = has_12mv_adc(data) ? 12 : 16;
if (data->in_scaled & (1 << nr))
lsb <<= 1;
return lsb;
}
static u8 in_to_reg(const struct it87_data *data, int nr, long val)
{
long lsb;
if (has_12mv_adc(data)) {
if (data->in_scaled & (1 << nr))
lsb = 24;
else
lsb = 12;
} else
lsb = 16;
val = DIV_ROUND_CLOSEST(val, lsb);
val = DIV_ROUND_CLOSEST(val, adc_lsb(data, nr));
return SENSORS_LIMIT(val, 0, 255);
}
static int in_from_reg(const struct it87_data *data, int nr, int val)
{
if (has_12mv_adc(data)) {
if (data->in_scaled & (1 << nr))
return val * 24;
else
return val * 12;
} else
return val * 16;
return val * adc_lsb(data, nr);
}
static inline u8 FAN_TO_REG(long rpm, int div)
@ -407,7 +411,9 @@ static inline int has_16bit_fans(const struct it87_data *data)
|| data->type == it8718
|| data->type == it8720
|| data->type == it8721
|| data->type == it8728;
|| data->type == it8728
|| data->type == it8782
|| data->type == it8783;
}
static inline int has_old_autopwm(const struct it87_data *data)
@ -1369,57 +1375,103 @@ static ssize_t show_name(struct device *dev, struct device_attribute
}
static DEVICE_ATTR(name, S_IRUGO, show_name, NULL);
static struct attribute *it87_attributes[] = {
static struct attribute *it87_attributes_in[9][5] = {
{
&sensor_dev_attr_in0_input.dev_attr.attr,
&sensor_dev_attr_in1_input.dev_attr.attr,
&sensor_dev_attr_in2_input.dev_attr.attr,
&sensor_dev_attr_in3_input.dev_attr.attr,
&sensor_dev_attr_in4_input.dev_attr.attr,
&sensor_dev_attr_in5_input.dev_attr.attr,
&sensor_dev_attr_in6_input.dev_attr.attr,
&sensor_dev_attr_in7_input.dev_attr.attr,
&sensor_dev_attr_in8_input.dev_attr.attr,
&sensor_dev_attr_in0_min.dev_attr.attr,
&sensor_dev_attr_in1_min.dev_attr.attr,
&sensor_dev_attr_in2_min.dev_attr.attr,
&sensor_dev_attr_in3_min.dev_attr.attr,
&sensor_dev_attr_in4_min.dev_attr.attr,
&sensor_dev_attr_in5_min.dev_attr.attr,
&sensor_dev_attr_in6_min.dev_attr.attr,
&sensor_dev_attr_in7_min.dev_attr.attr,
&sensor_dev_attr_in0_max.dev_attr.attr,
&sensor_dev_attr_in1_max.dev_attr.attr,
&sensor_dev_attr_in2_max.dev_attr.attr,
&sensor_dev_attr_in3_max.dev_attr.attr,
&sensor_dev_attr_in4_max.dev_attr.attr,
&sensor_dev_attr_in5_max.dev_attr.attr,
&sensor_dev_attr_in6_max.dev_attr.attr,
&sensor_dev_attr_in7_max.dev_attr.attr,
&sensor_dev_attr_in0_alarm.dev_attr.attr,
NULL
}, {
&sensor_dev_attr_in1_input.dev_attr.attr,
&sensor_dev_attr_in1_min.dev_attr.attr,
&sensor_dev_attr_in1_max.dev_attr.attr,
&sensor_dev_attr_in1_alarm.dev_attr.attr,
NULL
}, {
&sensor_dev_attr_in2_input.dev_attr.attr,
&sensor_dev_attr_in2_min.dev_attr.attr,
&sensor_dev_attr_in2_max.dev_attr.attr,
&sensor_dev_attr_in2_alarm.dev_attr.attr,
NULL
}, {
&sensor_dev_attr_in3_input.dev_attr.attr,
&sensor_dev_attr_in3_min.dev_attr.attr,
&sensor_dev_attr_in3_max.dev_attr.attr,
&sensor_dev_attr_in3_alarm.dev_attr.attr,
NULL
}, {
&sensor_dev_attr_in4_input.dev_attr.attr,
&sensor_dev_attr_in4_min.dev_attr.attr,
&sensor_dev_attr_in4_max.dev_attr.attr,
&sensor_dev_attr_in4_alarm.dev_attr.attr,
NULL
}, {
&sensor_dev_attr_in5_input.dev_attr.attr,
&sensor_dev_attr_in5_min.dev_attr.attr,
&sensor_dev_attr_in5_max.dev_attr.attr,
&sensor_dev_attr_in5_alarm.dev_attr.attr,
NULL
}, {
&sensor_dev_attr_in6_input.dev_attr.attr,
&sensor_dev_attr_in6_min.dev_attr.attr,
&sensor_dev_attr_in6_max.dev_attr.attr,
&sensor_dev_attr_in6_alarm.dev_attr.attr,
NULL
}, {
&sensor_dev_attr_in7_input.dev_attr.attr,
&sensor_dev_attr_in7_min.dev_attr.attr,
&sensor_dev_attr_in7_max.dev_attr.attr,
&sensor_dev_attr_in7_alarm.dev_attr.attr,
NULL
}, {
&sensor_dev_attr_in8_input.dev_attr.attr,
NULL
} };
static const struct attribute_group it87_group_in[9] = {
{ .attrs = it87_attributes_in[0] },
{ .attrs = it87_attributes_in[1] },
{ .attrs = it87_attributes_in[2] },
{ .attrs = it87_attributes_in[3] },
{ .attrs = it87_attributes_in[4] },
{ .attrs = it87_attributes_in[5] },
{ .attrs = it87_attributes_in[6] },
{ .attrs = it87_attributes_in[7] },
{ .attrs = it87_attributes_in[8] },
};
static struct attribute *it87_attributes_temp[3][6] = {
{
&sensor_dev_attr_temp1_input.dev_attr.attr,
&sensor_dev_attr_temp2_input.dev_attr.attr,
&sensor_dev_attr_temp3_input.dev_attr.attr,
&sensor_dev_attr_temp1_max.dev_attr.attr,
&sensor_dev_attr_temp2_max.dev_attr.attr,
&sensor_dev_attr_temp3_max.dev_attr.attr,
&sensor_dev_attr_temp1_min.dev_attr.attr,
&sensor_dev_attr_temp2_min.dev_attr.attr,
&sensor_dev_attr_temp3_min.dev_attr.attr,
&sensor_dev_attr_temp1_type.dev_attr.attr,
&sensor_dev_attr_temp2_type.dev_attr.attr,
&sensor_dev_attr_temp3_type.dev_attr.attr,
&sensor_dev_attr_temp1_alarm.dev_attr.attr,
NULL
} , {
&sensor_dev_attr_temp2_input.dev_attr.attr,
&sensor_dev_attr_temp2_max.dev_attr.attr,
&sensor_dev_attr_temp2_min.dev_attr.attr,
&sensor_dev_attr_temp2_type.dev_attr.attr,
&sensor_dev_attr_temp2_alarm.dev_attr.attr,
NULL
} , {
&sensor_dev_attr_temp3_input.dev_attr.attr,
&sensor_dev_attr_temp3_max.dev_attr.attr,
&sensor_dev_attr_temp3_min.dev_attr.attr,
&sensor_dev_attr_temp3_type.dev_attr.attr,
&sensor_dev_attr_temp3_alarm.dev_attr.attr,
NULL
} };
static const struct attribute_group it87_group_temp[3] = {
{ .attrs = it87_attributes_temp[0] },
{ .attrs = it87_attributes_temp[1] },
{ .attrs = it87_attributes_temp[2] },
};
static struct attribute *it87_attributes[] = {
&dev_attr_alarms.attr,
&sensor_dev_attr_intrusion0_alarm.dev_attr.attr,
&dev_attr_name.attr,
@ -1430,7 +1482,7 @@ static const struct attribute_group it87_group = {
.attrs = it87_attributes,
};
static struct attribute *it87_attributes_beep[] = {
static struct attribute *it87_attributes_in_beep[] = {
&sensor_dev_attr_in0_beep.dev_attr.attr,
&sensor_dev_attr_in1_beep.dev_attr.attr,
&sensor_dev_attr_in2_beep.dev_attr.attr,
@ -1439,15 +1491,13 @@ static struct attribute *it87_attributes_beep[] = {
&sensor_dev_attr_in5_beep.dev_attr.attr,
&sensor_dev_attr_in6_beep.dev_attr.attr,
&sensor_dev_attr_in7_beep.dev_attr.attr,
&sensor_dev_attr_temp1_beep.dev_attr.attr,
&sensor_dev_attr_temp2_beep.dev_attr.attr,
&sensor_dev_attr_temp3_beep.dev_attr.attr,
NULL
};
static const struct attribute_group it87_group_beep = {
.attrs = it87_attributes_beep,
static struct attribute *it87_attributes_temp_beep[] = {
&sensor_dev_attr_temp1_beep.dev_attr.attr,
&sensor_dev_attr_temp2_beep.dev_attr.attr,
&sensor_dev_attr_temp3_beep.dev_attr.attr,
};
static struct attribute *it87_attributes_fan16[5][3+1] = { {
@ -1651,6 +1701,12 @@ static int __init it87_find(unsigned short *address,
case IT8728F_DEVID:
sio_data->type = it8728;
break;
case IT8782F_DEVID:
sio_data->type = it8782;
break;
case IT8783E_DEVID:
sio_data->type = it8783;
break;
case 0xffff: /* No device at all */
goto exit;
default:
@ -1686,16 +1742,86 @@ static int __init it87_find(unsigned short *address,
/* The IT8705F has a different LD number for GPIO */
superio_select(5);
sio_data->beep_pin = superio_inb(IT87_SIO_BEEP_PIN_REG) & 0x3f;
} else if (sio_data->type == it8783) {
int reg25, reg27, reg2A, reg2C, regEF;
sio_data->skip_vid = 1; /* No VID */
superio_select(GPIO);
reg25 = superio_inb(IT87_SIO_GPIO1_REG);
reg27 = superio_inb(IT87_SIO_GPIO3_REG);
reg2A = superio_inb(IT87_SIO_PINX1_REG);
reg2C = superio_inb(IT87_SIO_PINX2_REG);
regEF = superio_inb(IT87_SIO_SPI_REG);
/* Check if fan3 is there or not */
if ((reg27 & (1 << 0)) || !(reg2C & (1 << 2)))
sio_data->skip_fan |= (1 << 2);
if ((reg25 & (1 << 4))
|| (!(reg2A & (1 << 1)) && (regEF & (1 << 0))))
sio_data->skip_pwm |= (1 << 2);
/* Check if fan2 is there or not */
if (reg27 & (1 << 7))
sio_data->skip_fan |= (1 << 1);
if (reg27 & (1 << 3))
sio_data->skip_pwm |= (1 << 1);
/* VIN5 */
if ((reg27 & (1 << 0)) || (reg2C & (1 << 2)))
sio_data->skip_in |= (1 << 5); /* No VIN5 */
/* VIN6 */
if (reg27 & (1 << 1))
sio_data->skip_in |= (1 << 6); /* No VIN6 */
/*
* VIN7
* Does not depend on bit 2 of Reg2C, contrary to datasheet.
*/
if (reg27 & (1 << 2)) {
/*
* The data sheet is a bit unclear regarding the
* internal voltage divider for VCCH5V. It says
* "This bit enables and switches VIN7 (pin 91) to the
* internal voltage divider for VCCH5V".
* This is different to other chips, where the internal
* voltage divider would connect VIN7 to an internal
* voltage source. Maybe that is the case here as well.
*
* Since we don't know for sure, re-route it if that is
* not the case, and ask the user to report if the
* resulting voltage is sane.
*/
if (!(reg2C & (1 << 1))) {
reg2C |= (1 << 1);
superio_outb(IT87_SIO_PINX2_REG, reg2C);
pr_notice("Routing internal VCCH5V to in7.\n");
}
pr_notice("in7 routed to internal voltage divider, with external pin disabled.\n");
pr_notice("Please report if it displays a reasonable voltage.\n");
}
if (reg2C & (1 << 0))
sio_data->internal |= (1 << 0);
if (reg2C & (1 << 1))
sio_data->internal |= (1 << 1);
sio_data->beep_pin = superio_inb(IT87_SIO_BEEP_PIN_REG) & 0x3f;
} else {
int reg;
bool uart6;
superio_select(GPIO);
reg = superio_inb(IT87_SIO_GPIO3_REG);
if (sio_data->type == it8721 || sio_data->type == it8728) {
if (sio_data->type == it8721 || sio_data->type == it8728 ||
sio_data->type == it8782) {
/*
* The IT8721F/IT8758E doesn't have VID pins at all,
* not sure about the IT8728F.
* IT8721F/IT8758E, and IT8782F don't have VID pins
* at all, not sure about the IT8728F.
*/
sio_data->skip_vid = 1;
} else {
@ -1724,6 +1850,9 @@ static int __init it87_find(unsigned short *address,
sio_data->vid_value = superio_inb(IT87_SIO_VID_REG);
reg = superio_inb(IT87_SIO_PINX2_REG);
uart6 = sio_data->type == it8782 && (reg & (1 << 2));
/*
* The IT8720F has no VIN7 pin, so VCCH should always be
* routed internally to VIN7 with an internal divider.
@ -1733,8 +1862,12 @@ static int __init it87_find(unsigned short *address,
* configured, even though the IT8720F datasheet claims
* that the internal routing of VCCH to VIN7 is the default
* setting. So we force the internal routing in this case.
*
* On IT8782F, VIN7 is multiplexed with one of the UART6 pins.
* If UART6 is enabled, re-route VIN7 to the internal divider
* if that is not already the case.
*/
if (sio_data->type == it8720 && !(reg & (1 << 1))) {
if ((sio_data->type == it8720 || uart6) && !(reg & (1 << 1))) {
reg |= (1 << 1);
superio_outb(IT87_SIO_PINX2_REG, reg);
pr_notice("Routing internal VCCH to in7\n");
@ -1745,6 +1878,20 @@ static int __init it87_find(unsigned short *address,
sio_data->type == it8728)
sio_data->internal |= (1 << 1);
/*
* On IT8782F, UART6 pins overlap with VIN5, VIN6, and VIN7.
* While VIN7 can be routed to the internal voltage divider,
* VIN5 and VIN6 are not available if UART6 is enabled.
*
* Also, temp3 is not available if UART6 is enabled and TEMPIN3
* is the temperature source. Since we can not read the
* temperature source here, skip_temp is preliminary.
*/
if (uart6) {
sio_data->skip_in |= (1 << 5) | (1 << 6);
sio_data->skip_temp |= (1 << 2);
}
sio_data->beep_pin = superio_inb(IT87_SIO_BEEP_PIN_REG) & 0x3f;
}
if (sio_data->beep_pin)
@ -1782,8 +1929,22 @@ static void it87_remove_files(struct device *dev)
int i;
sysfs_remove_group(&dev->kobj, &it87_group);
if (sio_data->beep_pin)
sysfs_remove_group(&dev->kobj, &it87_group_beep);
for (i = 0; i < 9; i++) {
if (sio_data->skip_in & (1 << i))
continue;
sysfs_remove_group(&dev->kobj, &it87_group_in[i]);
if (it87_attributes_in_beep[i])
sysfs_remove_file(&dev->kobj,
it87_attributes_in_beep[i]);
}
for (i = 0; i < 3; i++) {
if (!(data->has_temp & (1 << i)))
continue;
sysfs_remove_group(&dev->kobj, &it87_group_temp[i]);
if (sio_data->beep_pin)
sysfs_remove_file(&dev->kobj,
it87_attributes_temp_beep[i]);
}
for (i = 0; i < 5; i++) {
if (!(data->has_fan & (1 << i)))
continue;
@ -1823,22 +1984,22 @@ static int __devinit it87_probe(struct platform_device *pdev)
"it8720",
"it8721",
"it8728",
"it8782",
"it8783",
};
res = platform_get_resource(pdev, IORESOURCE_IO, 0);
if (!request_region(res->start, IT87_EC_EXTENT, DRVNAME)) {
if (!devm_request_region(&pdev->dev, res->start, IT87_EC_EXTENT,
DRVNAME)) {
dev_err(dev, "Failed to request region 0x%lx-0x%lx\n",
(unsigned long)res->start,
(unsigned long)(res->start + IT87_EC_EXTENT - 1));
err = -EBUSY;
goto ERROR0;
return -EBUSY;
}
data = kzalloc(sizeof(struct it87_data), GFP_KERNEL);
if (!data) {
err = -ENOMEM;
goto ERROR1;
}
data = devm_kzalloc(&pdev->dev, sizeof(struct it87_data), GFP_KERNEL);
if (!data)
return -ENOMEM;
data->addr = res->start;
data->type = sio_data->type;
@ -1847,10 +2008,8 @@ static int __devinit it87_probe(struct platform_device *pdev)
/* Now, we do the remaining detection. */
if ((it87_read_value(data, IT87_REG_CONFIG) & 0x80)
|| it87_read_value(data, IT87_REG_CHIPID) != 0x90) {
err = -ENODEV;
goto ERROR2;
}
|| it87_read_value(data, IT87_REG_CHIPID) != 0x90)
return -ENODEV;
platform_set_drvdata(pdev, data);
@ -1867,6 +2026,18 @@ static int __devinit it87_probe(struct platform_device *pdev)
data->in_scaled |= (1 << 7); /* in7 is VSB */
if (sio_data->internal & (1 << 2))
data->in_scaled |= (1 << 8); /* in8 is Vbat */
} else if (sio_data->type == it8782 || sio_data->type == it8783) {
if (sio_data->internal & (1 << 0))
data->in_scaled |= (1 << 3); /* in3 is VCC5V */
if (sio_data->internal & (1 << 1))
data->in_scaled |= (1 << 7); /* in7 is VCCH5V */
}
data->has_temp = 0x07;
if (sio_data->skip_temp & (1 << 2)) {
if (sio_data->type == it8782
&& !(it87_read_value(data, IT87_REG_TEMP_EXTRA) & 0x80))
data->has_temp &= ~(1 << 2);
}
/* Initialize the IT87 chip */
@ -1875,12 +2046,34 @@ static int __devinit it87_probe(struct platform_device *pdev)
/* Register sysfs hooks */
err = sysfs_create_group(&dev->kobj, &it87_group);
if (err)
goto ERROR2;
return err;
if (sio_data->beep_pin) {
err = sysfs_create_group(&dev->kobj, &it87_group_beep);
for (i = 0; i < 9; i++) {
if (sio_data->skip_in & (1 << i))
continue;
err = sysfs_create_group(&dev->kobj, &it87_group_in[i]);
if (err)
goto ERROR4;
goto error;
if (sio_data->beep_pin && it87_attributes_in_beep[i]) {
err = sysfs_create_file(&dev->kobj,
it87_attributes_in_beep[i]);
if (err)
goto error;
}
}
for (i = 0; i < 3; i++) {
if (!(data->has_temp & (1 << i)))
continue;
err = sysfs_create_group(&dev->kobj, &it87_group_temp[i]);
if (err)
goto error;
if (sio_data->beep_pin) {
err = sysfs_create_file(&dev->kobj,
it87_attributes_temp_beep[i]);
if (err)
goto error;
}
}
/* Do not create fan files for disabled fans */
@ -1891,13 +2084,13 @@ static int __devinit it87_probe(struct platform_device *pdev)
continue;
err = sysfs_create_group(&dev->kobj, &fan_group[i]);
if (err)
goto ERROR4;
goto error;
if (sio_data->beep_pin) {
err = sysfs_create_file(&dev->kobj,
it87_attributes_fan_beep[i]);
if (err)
goto ERROR4;
goto error;
if (!fan_beep_need_rw)
continue;
@ -1922,14 +2115,14 @@ static int __devinit it87_probe(struct platform_device *pdev)
err = sysfs_create_group(&dev->kobj,
&it87_group_pwm[i]);
if (err)
goto ERROR4;
goto error;
if (!has_old_autopwm(data))
continue;
err = sysfs_create_group(&dev->kobj,
&it87_group_autopwm[i]);
if (err)
goto ERROR4;
goto error;
}
}
@ -1939,7 +2132,7 @@ static int __devinit it87_probe(struct platform_device *pdev)
data->vid = sio_data->vid_value;
err = sysfs_create_group(&dev->kobj, &it87_group_vid);
if (err)
goto ERROR4;
goto error;
}
/* Export labels for internal sensors */
@ -1949,25 +2142,19 @@ static int __devinit it87_probe(struct platform_device *pdev)
err = sysfs_create_file(&dev->kobj,
it87_attributes_label[i]);
if (err)
goto ERROR4;
goto error;
}
data->hwmon_dev = hwmon_device_register(dev);
if (IS_ERR(data->hwmon_dev)) {
err = PTR_ERR(data->hwmon_dev);
goto ERROR4;
goto error;
}
return 0;
ERROR4:
error:
it87_remove_files(dev);
ERROR2:
platform_set_drvdata(pdev, NULL);
kfree(data);
ERROR1:
release_region(res->start, IT87_EC_EXTENT);
ERROR0:
return err;
}
@ -1978,10 +2165,6 @@ static int __devexit it87_remove(struct platform_device *pdev)
hwmon_device_unregister(data->hwmon_dev);
it87_remove_files(&pdev->dev);
release_region(data->addr, IT87_EC_EXTENT);
platform_set_drvdata(pdev, NULL);
kfree(data);
return 0;
}
@ -2143,8 +2326,9 @@ static void __devinit it87_init_device(struct platform_device *pdev)
it87_write_value(data, IT87_REG_FAN_16BIT,
tmp | 0x07);
}
/* IT8705F only supports three fans. */
if (data->type != it87) {
/* IT8705F, IT8782F, and IT8783E/F only support three fans. */
if (data->type != it87 && data->type != it8782 &&
data->type != it8783) {
if (tmp & (1 << 4))
data->has_fan |= (1 << 3); /* fan4 enabled */
if (tmp & (1 << 5))
@ -2233,6 +2417,8 @@ static struct it87_data *it87_update_device(struct device *dev)
}
}
for (i = 0; i < 3; i++) {
if (!(data->has_temp & (1 << i)))
continue;
data->temp[i] =
it87_read_value(data, IT87_REG_TEMP(i));
data->temp_high[i] =

13
drivers/hwmon/k10temp.c
View File

@ -225,15 +225,4 @@ static struct pci_driver k10temp_driver = {
.remove = __devexit_p(k10temp_remove),
};
static int __init k10temp_init(void)
{
return pci_register_driver(&k10temp_driver);
}
static void __exit k10temp_exit(void)
{
pci_unregister_driver(&k10temp_driver);
}
module_init(k10temp_init)
module_exit(k10temp_exit)
module_pci_driver(k10temp_driver);

13
drivers/hwmon/k8temp.c
View File

@ -339,19 +339,8 @@ static struct pci_driver k8temp_driver = {
.remove = __devexit_p(k8temp_remove),
};
static int __init k8temp_init(void)
{
return pci_register_driver(&k8temp_driver);
}
static void __exit k8temp_exit(void)
{
pci_unregister_driver(&k8temp_driver);
}
module_pci_driver(k8temp_driver);
MODULE_AUTHOR("Rudolf Marek <r.marek@assembler.cz>");
MODULE_DESCRIPTION("AMD K8 core temperature monitor");
MODULE_LICENSE("GPL");
module_init(k8temp_init)
module_exit(k8temp_exit)

189
drivers/hwmon/ntc_thermistor.c
View File

@ -134,8 +134,7 @@ static inline u64 div64_u64_safe(u64 dividend, u64 divisor)
return div64_u64(dividend, divisor);
}
static unsigned int get_ohm_of_thermistor(struct ntc_data *data,
unsigned int uV)
static int get_ohm_of_thermistor(struct ntc_data *data, unsigned int uV)
{
struct ntc_thermistor_platform_data *pdata = data->pdata;
u64 mV = uV / 1000;
@ -146,12 +145,12 @@ static unsigned int get_ohm_of_thermistor(struct ntc_data *data,
if (mV == 0) {
if (pdata->connect == NTC_CONNECTED_POSITIVE)
return UINT_MAX;
return INT_MAX;
return 0;
}
if (mV >= pmV)
return (pdata->connect == NTC_CONNECTED_POSITIVE) ?
0 : UINT_MAX;
0 : INT_MAX;
if (pdata->connect == NTC_CONNECTED_POSITIVE && puO == 0)
N = div64_u64_safe(pdO * (pmV - mV), mV);
@ -163,113 +162,109 @@ static unsigned int get_ohm_of_thermistor(struct ntc_data *data,
else
N = div64_u64_safe(pdO * puO * mV, pdO * (pmV - mV) - puO * mV);
return (unsigned int) N;
if (N > INT_MAX)
N = INT_MAX;
return N;
}
static int lookup_comp(struct ntc_data *data,
unsigned int ohm, int *i_low, int *i_high)
static void lookup_comp(struct ntc_data *data, unsigned int ohm,
int *i_low, int *i_high)
{
int start, end, mid = -1;
int start, end, mid;
/*
* Handle special cases: Resistance is higher than or equal to
* resistance in first table entry, or resistance is lower or equal
* to resistance in last table entry.
* In these cases, return i_low == i_high, either pointing to the
* beginning or to the end of the table depending on the condition.
*/
if (ohm >= data->comp[0].ohm) {
*i_low = 0;
*i_high = 0;
return;
}
if (ohm <= data->comp[data->n_comp - 1].ohm) {
*i_low = data->n_comp - 1;
*i_high = data->n_comp - 1;
return;
}
/* Do a binary search on compensation table */
start = 0;
end = data->n_comp;
while (end > start) {
while (start < end) {
mid = start + (end - start) / 2;
if (data->comp[mid].ohm < ohm)
/*
* start <= mid < end
* data->comp[start].ohm > ohm >= data->comp[end].ohm
*
* We could check for "ohm == data->comp[mid].ohm" here, but
* that is a quite unlikely condition, and we would have to
* check again after updating start. Check it at the end instead
* for simplicity.
*/
if (ohm >= data->comp[mid].ohm) {
end = mid;
else if (data->comp[mid].ohm > ohm)
} else {
start = mid + 1;
else
break;
}
if (mid == 0) {
if (data->comp[mid].ohm > ohm) {
*i_high = mid;
*i_low = mid + 1;
return 0;
} else {
*i_low = mid;
*i_high = -1;
return -EINVAL;
/*
* ohm >= data->comp[start].ohm might be true here,
* since we set start to mid + 1. In that case, we are
* done. We could keep going, but the condition is quite
* likely to occur, so it is worth checking for it.
*/
if (ohm >= data->comp[start].ohm)
end = start;
}
/*
* start <= end
* data->comp[start].ohm >= ohm >= data->comp[end].ohm
*/
}
if (mid == (data->n_comp - 1)) {
if (data->comp[mid].ohm <= ohm) {
*i_low = mid;
*i_high = mid - 1;
return 0;
} else {
*i_low = -1;
*i_high = mid;
return -EINVAL;
}
}
if (data->comp[mid].ohm <= ohm) {
*i_low = mid;
*i_high = mid - 1;
} else {
*i_low = mid + 1;
*i_high = mid;
}
return 0;
/*
* start == end
* ohm >= data->comp[end].ohm
*/
*i_low = end;
if (ohm == data->comp[end].ohm)
*i_high = end;
else
*i_high = end - 1;
}
static int get_temp_mC(struct ntc_data *data, unsigned int ohm, int *temp)
static int get_temp_mC(struct ntc_data *data, unsigned int ohm)
{
int low, high;
int ret;
int temp;
ret = lookup_comp(data, ohm, &low, &high);
if (ret) {
lookup_comp(data, ohm, &low, &high);
if (low == high) {
/* Unable to use linear approximation */
if (low != -1)
*temp = data->comp[low].temp_C * 1000;
else if (high != -1)
*temp = data->comp[high].temp_C * 1000;
else
return ret;
temp = data->comp[low].temp_C * 1000;
} else {
*temp = data->comp[low].temp_C * 1000 +
temp = data->comp[low].temp_C * 1000 +
((data->comp[high].temp_C - data->comp[low].temp_C) *
1000 * ((int)ohm - (int)data->comp[low].ohm)) /
((int)data->comp[high].ohm - (int)data->comp[low].ohm);
}
return 0;
return temp;
}
static int ntc_thermistor_read(struct ntc_data *data, int *temp)
static int ntc_thermistor_get_ohm(struct ntc_data *data)
{
int ret;
int read_ohm, read_uV;
unsigned int ohm = 0;
int read_uV;
if (data->pdata->read_ohm) {
read_ohm = data->pdata->read_ohm();
if (read_ohm < 0)
return read_ohm;
ohm = (unsigned int)read_ohm;
}
if (data->pdata->read_ohm)
return data->pdata->read_ohm();
if (data->pdata->read_uV) {
read_uV = data->pdata->read_uV();
if (read_uV < 0)
return read_uV;
ohm = get_ohm_of_thermistor(data, (unsigned int)read_uV);
return get_ohm_of_thermistor(data, read_uV);
}
ret = get_temp_mC(data, ohm, temp);
if (ret) {
dev_dbg(data->dev, "Sensor reading function not available.\n");
return ret;
}
return 0;
return -EINVAL;
}
static ssize_t ntc_show_name(struct device *dev,
@ -290,12 +285,13 @@ static ssize_t ntc_show_temp(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct ntc_data *data = dev_get_drvdata(dev);
int temp, ret;
int ohm;
ret = ntc_thermistor_read(data, &temp);
if (ret)
return ret;
return sprintf(buf, "%d\n", temp);
ohm = ntc_thermistor_get_ohm(data);
if (ohm < 0)
return ohm;
return sprintf(buf, "%d\n", get_temp_mC(data, ohm));
}
static SENSOR_DEVICE_ATTR(temp1_type, S_IRUGO, ntc_show_type, NULL, 0);
@ -326,14 +322,14 @@ static int __devinit ntc_thermistor_probe(struct platform_device *pdev)
/* Either one of the two is required. */
if (!pdata->read_uV && !pdata->read_ohm) {
dev_err(&pdev->dev, "Both read_uV and read_ohm missing."
"Need either one of the two.\n");
dev_err(&pdev->dev,
"Both read_uV and read_ohm missing. Need either one of the two.\n");
return -EINVAL;
}
if (pdata->read_uV && pdata->read_ohm) {
dev_warn(&pdev->dev, "Only one of read_uV and read_ohm "
"is needed; ignoring read_uV.\n");
dev_warn(&pdev->dev,
"Only one of read_uV and read_ohm is needed; ignoring read_uV.\n");
pdata->read_uV = NULL;
}
@ -344,12 +340,12 @@ static int __devinit ntc_thermistor_probe(struct platform_device *pdev)
NTC_CONNECTED_POSITIVE) ||
(pdata->connect != NTC_CONNECTED_POSITIVE &&
pdata->connect != NTC_CONNECTED_GROUND))) {
dev_err(&pdev->dev, "Required data to use read_uV not "
"supplied.\n");
dev_err(&pdev->dev,
"Required data to use read_uV not supplied.\n");
return -EINVAL;
}
data = kzalloc(sizeof(struct ntc_data), GFP_KERNEL);
data = devm_kzalloc(&pdev->dev, sizeof(struct ntc_data), GFP_KERNEL);
if (!data)
return -ENOMEM;
@ -370,8 +366,7 @@ static int __devinit ntc_thermistor_probe(struct platform_device *pdev)
dev_err(&pdev->dev, "Unknown device type: %lu(%s)\n",
pdev->id_entry->driver_data,
pdev->id_entry->name);
ret = -EINVAL;
goto err;
return -EINVAL;
}
platform_set_drvdata(pdev, data);
@ -379,13 +374,13 @@ static int __devinit ntc_thermistor_probe(struct platform_device *pdev)
ret = sysfs_create_group(&data->dev->kobj, &ntc_attr_group);
if (ret) {
dev_err(data->dev, "unable to create sysfs files\n");
goto err;
return ret;
}
data->hwmon_dev = hwmon_device_register(data->dev);
if (IS_ERR_OR_NULL(data->hwmon_dev)) {
if (IS_ERR(data->hwmon_dev)) {
dev_err(data->dev, "unable to register as hwmon device.\n");
ret = -EINVAL;
ret = PTR_ERR(data->hwmon_dev);
goto err_after_sysfs;
}
@ -395,8 +390,6 @@ static int __devinit ntc_thermistor_probe(struct platform_device *pdev)
return 0;
err_after_sysfs:
sysfs_remove_group(&data->dev->kobj, &ntc_attr_group);
err:
kfree(data);
return ret;
}
@ -408,8 +401,6 @@ static int __devexit ntc_thermistor_remove(struct platform_device *pdev)
sysfs_remove_group(&data->dev->kobj, &ntc_attr_group);
platform_set_drvdata(pdev, NULL);
kfree(data);
return 0;
}

19
include/linux/platform_data/ina2xx.h Normal file
View File

@ -0,0 +1,19 @@
/*
* Driver for Texas Instruments INA219, INA226 power monitor chips
*
* Copyright (C) 2012 Lothar Felten <l-felten@ti.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* For further information, see the Documentation/hwmon/ina2xx file.
*/
/**
* struct ina2xx_platform_data - ina2xx info
* @shunt_uohms shunt resistance in microohms
*/
struct ina2xx_platform_data {
long shunt_uohms;
};