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Commit 54187ff9 authored by Guenter Roeck's avatar Guenter Roeck
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hwmon: (max31790) Convert to use new hwmon registration API 

Simplify code and reduce code size by using the new hwmon
registration API.
Signed-off-by: default avatarGuenter Roeck <linux@roeck-us.net>
parent d65a5102
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Showing with 224 additions and 297 deletions
drivers/hwmon/max31790.c
View file @ 54187ff9
......@@ -17,7 +17,6 @@
#include <linux/err.h>
#include <linux/hwmon.h>
#include <linux/hwmon-sysfs.h>
#include <linux/i2c.h>
#include <linux/init.h>
#include <linux/jiffies.h>
......@@ -169,362 +168,288 @@ static u8 bits_for_tach_period(int rpm)
return bits;
}
static ssize_t get_fan(struct device *dev,
struct device_attribute *devattr, char *buf)
static int max31790_read_fan(struct device *dev, u32 attr, int channel,
long *val)
{
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
struct max31790_data *data = max31790_update_device(dev);
int sr, rpm;
if (IS_ERR(data))
return PTR_ERR(data);
sr = get_tach_period(data->fan_dynamics[attr->index]);
rpm = RPM_FROM_REG(data->tach[attr->index], sr);
return sprintf(buf, "%d\n", rpm);
}
static ssize_t get_fan_target(struct device *dev,
struct device_attribute *devattr, char *buf)
{
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
struct max31790_data *data = max31790_update_device(dev);
int sr, rpm;
if (IS_ERR(data))
return PTR_ERR(data);
sr = get_tach_period(data->fan_dynamics[attr->index]);
rpm = RPM_FROM_REG(data->target_count[attr->index], sr);
return sprintf(buf, "%d\n", rpm);
switch (attr) {
case hwmon_fan_input:
sr = get_tach_period(data->fan_dynamics[channel]);
rpm = RPM_FROM_REG(data->tach[channel], sr);
*val = rpm;
return 0;
case hwmon_fan_target:
sr = get_tach_period(data->fan_dynamics[channel]);
rpm = RPM_FROM_REG(data->target_count[channel], sr);
*val = rpm;
return 0;
case hwmon_fan_fault:
*val = !!(data->fault_status & (1 << channel));
return 0;
default:
return -EOPNOTSUPP;
}
}
static ssize_t set_fan_target(struct device *dev,
struct device_attribute *devattr,
const char *buf, size_t count)
static int max31790_write_fan(struct device *dev, u32 attr, int channel,
long val)
{
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
struct max31790_data *data = dev_get_drvdata(dev);
struct i2c_client *client = data->client;
int target_count;
int err = 0;
u8 bits;
int sr;
int target_count;
unsigned long rpm;
int err;
err = kstrtoul(buf, 10, &rpm);
if (err)
return err;
mutex_lock(&data->update_lock);
rpm = clamp_val(rpm, FAN_RPM_MIN, FAN_RPM_MAX);
bits = bits_for_tach_period(rpm);
data->fan_dynamics[attr->index] =
((data->fan_dynamics[attr->index]
& ~MAX31790_FAN_DYN_SR_MASK)
| (bits << MAX31790_FAN_DYN_SR_SHIFT));
err = i2c_smbus_write_byte_data(client,
MAX31790_REG_FAN_DYNAMICS(attr->index),
data->fan_dynamics[attr->index]);
if (err < 0) {
mutex_unlock(&data->update_lock);
return err;
switch (attr) {
case hwmon_fan_target:
val = clamp_val(val, FAN_RPM_MIN, FAN_RPM_MAX);
bits = bits_for_tach_period(val);
data->fan_dynamics[channel] =
((data->fan_dynamics[channel] &
~MAX31790_FAN_DYN_SR_MASK) |
(bits << MAX31790_FAN_DYN_SR_SHIFT));
err = i2c_smbus_write_byte_data(client,
MAX31790_REG_FAN_DYNAMICS(channel),
data->fan_dynamics[channel]);
if (err < 0)
break;
sr = get_tach_period(data->fan_dynamics[channel]);
target_count = RPM_TO_REG(val, sr);
target_count = clamp_val(target_count, 0x1, 0x7FF);
data->target_count[channel] = target_count << 5;
err = i2c_smbus_write_word_swapped(client,
MAX31790_REG_TARGET_COUNT(channel),
data->target_count[channel]);
break;
default:
err = -EOPNOTSUPP;
break;
}
sr = get_tach_period(data->fan_dynamics[attr->index]);
target_count = RPM_TO_REG(rpm, sr);
target_count = clamp_val(target_count, 0x1, 0x7FF);
data->target_count[attr->index] = target_count << 5;
err = i2c_smbus_write_word_swapped(client,
MAX31790_REG_TARGET_COUNT(attr->index),
data->target_count[attr->index]);
mutex_unlock(&data->update_lock);
if (err < 0)
return err;
return err;
}
return count;
static umode_t max31790_fan_is_visible(const void *_data, u32 attr, int channel)
{
const struct max31790_data *data = _data;
u8 fan_config = data->fan_config[channel % NR_CHANNEL];
switch (attr) {
case hwmon_fan_input:
case hwmon_fan_fault:
if (channel < NR_CHANNEL ||
(fan_config & MAX31790_FAN_CFG_TACH_INPUT))
return S_IRUGO;
return 0;
case hwmon_fan_target:
if (channel < NR_CHANNEL &&
!(fan_config & MAX31790_FAN_CFG_TACH_INPUT))
return S_IRUGO | S_IWUSR;
return 0;
default:
return 0;
}
}
static ssize_t get_pwm(struct device *dev,
struct device_attribute *devattr, char *buf)
static int max31790_read_pwm(struct device *dev, u32 attr, int channel,
long *val)
{
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
struct max31790_data *data = max31790_update_device(dev);
int pwm;
u8 fan_config = data->fan_config[channel];
if (IS_ERR(data))
return PTR_ERR(data);
pwm = data->pwm[attr->index] >> 8;
return sprintf(buf, "%d\n", pwm);
switch (attr) {
case hwmon_pwm_input:
*val = data->pwm[channel] >> 8;
return 0;
case hwmon_pwm_enable:
if (fan_config & MAX31790_FAN_CFG_RPM_MODE)
*val = 2;
else if (fan_config & MAX31790_FAN_CFG_TACH_INPUT_EN)
*val = 1;
else
*val = 0;
return 0;
default:
return -EOPNOTSUPP;
}
}
static ssize_t set_pwm(struct device *dev,
struct device_attribute *devattr,
const char *buf, size_t count)
static int max31790_write_pwm(struct device *dev, u32 attr, int channel,
long val)
{
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
struct max31790_data *data = dev_get_drvdata(dev);
struct i2c_client *client = data->client;
unsigned long pwm;
int err;
err = kstrtoul(buf, 10, &pwm);
if (err)
return err;
if (pwm > 255)
return -EINVAL;
u8 fan_config;
int err = 0;
mutex_lock(&data->update_lock);
data->pwm[attr->index] = pwm << 8;
err = i2c_smbus_write_word_swapped(client,
MAX31790_REG_PWMOUT(attr->index),
data->pwm[attr->index]);
switch (attr) {
case hwmon_pwm_input:
if (val < 0 || val > 255) {
err = -EINVAL;
break;
}
data->pwm[channel] = val << 8;
err = i2c_smbus_write_word_swapped(client,
MAX31790_REG_PWMOUT(channel),
val);
break;
case hwmon_pwm_enable:
fan_config = data->fan_config[channel];
if (val == 0) {
fan_config &= ~(MAX31790_FAN_CFG_TACH_INPUT_EN |
MAX31790_FAN_CFG_RPM_MODE);
} else if (val == 1) {
fan_config = (fan_config |
MAX31790_FAN_CFG_TACH_INPUT_EN) &
~MAX31790_FAN_CFG_RPM_MODE;
} else if (val == 2) {
fan_config |= MAX31790_FAN_CFG_TACH_INPUT_EN |
MAX31790_FAN_CFG_RPM_MODE;
} else {
err = -EINVAL;
break;
}
data->fan_config[channel] = fan_config;
err = i2c_smbus_write_byte_data(client,
MAX31790_REG_FAN_CONFIG(channel),
fan_config);
break;
default:
err = -EOPNOTSUPP;
break;
}
mutex_unlock(&data->update_lock);
if (err < 0)
return err;
return count;
return err;
}
static ssize_t get_pwm_enable(struct device *dev,
struct device_attribute *devattr, char *buf)
static umode_t max31790_pwm_is_visible(const void *_data, u32 attr, int channel)
{
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
struct max31790_data *data = max31790_update_device(dev);
int mode;
if (IS_ERR(data))
return PTR_ERR(data);
if (data->fan_config[attr->index] & MAX31790_FAN_CFG_RPM_MODE)
mode = 2;
else if (data->fan_config[attr->index] & MAX31790_FAN_CFG_TACH_INPUT_EN)
mode = 1;
else
mode = 0;
return sprintf(buf, "%d\n", mode);
const struct max31790_data *data = _data;
u8 fan_config = data->fan_config[channel];
switch (attr) {
case hwmon_pwm_input:
case hwmon_pwm_enable:
if (!(fan_config & MAX31790_FAN_CFG_TACH_INPUT))
return S_IRUGO | S_IWUSR;
return 0;
default:
return 0;
}
}
static ssize_t set_pwm_enable(struct device *dev,
struct device_attribute *devattr,
const char *buf, size_t count)
static int max31790_read(struct device *dev, enum hwmon_sensor_types type,
u32 attr, int channel, long *val)
{
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
struct max31790_data *data = dev_get_drvdata(dev);
struct i2c_client *client = data->client;
unsigned long mode;
int err;
err = kstrtoul(buf, 10, &mode);
if (err)
return err;
switch (mode) {
case 0:
data->fan_config[attr->index] =
data->fan_config[attr->index]
& ~(MAX31790_FAN_CFG_TACH_INPUT_EN
| MAX31790_FAN_CFG_RPM_MODE);
break;
case 1:
data->fan_config[attr->index] =
(data->fan_config[attr->index]
| MAX31790_FAN_CFG_TACH_INPUT_EN)
& ~MAX31790_FAN_CFG_RPM_MODE;
break;
case 2:
data->fan_config[attr->index] =
data->fan_config[attr->index]
| MAX31790_FAN_CFG_TACH_INPUT_EN
| MAX31790_FAN_CFG_RPM_MODE;
break;
switch (type) {
case hwmon_fan:
return max31790_read_fan(dev, attr, channel, val);
case hwmon_pwm:
return max31790_read_pwm(dev, attr, channel, val);
default:
return -EINVAL;
return -EOPNOTSUPP;
}
mutex_lock(&data->update_lock);
err = i2c_smbus_write_byte_data(client,
MAX31790_REG_FAN_CONFIG(attr->index),
data->fan_config[attr->index]);
mutex_unlock(&data->update_lock);
if (err < 0)
return err;
return count;
}
static ssize_t get_fan_fault(struct device *dev,
struct device_attribute *devattr, char *buf)
static int max31790_write(struct device *dev, enum hwmon_sensor_types type,
u32 attr, int channel, long val)
{
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
struct max31790_data *data = max31790_update_device(dev);
int fault;
if (IS_ERR(data))
return PTR_ERR(data);
fault = !!(data->fault_status & (1 << attr->index));
switch (type) {
case hwmon_fan:
return max31790_write_fan(dev, attr, channel, val);
case hwmon_pwm:
return max31790_write_pwm(dev, attr, channel, val);
default:
return -EOPNOTSUPP;
}
}
return sprintf(buf, "%d\n", fault);
static umode_t max31790_is_visible(const void *data,
enum hwmon_sensor_types type,
u32 attr, int channel)
{
switch (type) {
case hwmon_fan:
return max31790_fan_is_visible(data, attr, channel);
case hwmon_pwm:
return max31790_pwm_is_visible(data, attr, channel);
default:
return 0;
}
}
static SENSOR_DEVICE_ATTR(fan1_input, S_IRUGO, get_fan, NULL, 0);
static SENSOR_DEVICE_ATTR(fan2_input, S_IRUGO, get_fan, NULL, 1);
static SENSOR_DEVICE_ATTR(fan3_input, S_IRUGO, get_fan, NULL, 2);
static SENSOR_DEVICE_ATTR(fan4_input, S_IRUGO, get_fan, NULL, 3);
static SENSOR_DEVICE_ATTR(fan5_input, S_IRUGO, get_fan, NULL, 4);
static SENSOR_DEVICE_ATTR(fan6_input, S_IRUGO, get_fan, NULL, 5);
static SENSOR_DEVICE_ATTR(fan1_fault, S_IRUGO, get_fan_fault, NULL, 0);
static SENSOR_DEVICE_ATTR(fan2_fault, S_IRUGO, get_fan_fault, NULL, 1);
static SENSOR_DEVICE_ATTR(fan3_fault, S_IRUGO, get_fan_fault, NULL, 2);
static SENSOR_DEVICE_ATTR(fan4_fault, S_IRUGO, get_fan_fault, NULL, 3);
static SENSOR_DEVICE_ATTR(fan5_fault, S_IRUGO, get_fan_fault, NULL, 4);
static SENSOR_DEVICE_ATTR(fan6_fault, S_IRUGO, get_fan_fault, NULL, 5);
static SENSOR_DEVICE_ATTR(fan7_input, S_IRUGO, get_fan, NULL, 6);
static SENSOR_DEVICE_ATTR(fan8_input, S_IRUGO, get_fan, NULL, 7);
static SENSOR_DEVICE_ATTR(fan9_input, S_IRUGO, get_fan, NULL, 8);
static SENSOR_DEVICE_ATTR(fan10_input, S_IRUGO, get_fan, NULL, 9);
static SENSOR_DEVICE_ATTR(fan11_input, S_IRUGO, get_fan, NULL, 10);
static SENSOR_DEVICE_ATTR(fan12_input, S_IRUGO, get_fan, NULL, 11);
static SENSOR_DEVICE_ATTR(fan7_fault, S_IRUGO, get_fan_fault, NULL, 6);
static SENSOR_DEVICE_ATTR(fan8_fault, S_IRUGO, get_fan_fault, NULL, 7);
static SENSOR_DEVICE_ATTR(fan9_fault, S_IRUGO, get_fan_fault, NULL, 8);
static SENSOR_DEVICE_ATTR(fan10_fault, S_IRUGO, get_fan_fault, NULL, 9);
static SENSOR_DEVICE_ATTR(fan11_fault, S_IRUGO, get_fan_fault, NULL, 10);
static SENSOR_DEVICE_ATTR(fan12_fault, S_IRUGO, get_fan_fault, NULL, 11);
static SENSOR_DEVICE_ATTR(fan1_target, S_IWUSR | S_IRUGO,
get_fan_target, set_fan_target, 0);
static SENSOR_DEVICE_ATTR(fan2_target, S_IWUSR | S_IRUGO,
get_fan_target, set_fan_target, 1);
static SENSOR_DEVICE_ATTR(fan3_target, S_IWUSR | S_IRUGO,
get_fan_target, set_fan_target, 2);
static SENSOR_DEVICE_ATTR(fan4_target, S_IWUSR | S_IRUGO,
get_fan_target, set_fan_target, 3);
static SENSOR_DEVICE_ATTR(fan5_target, S_IWUSR | S_IRUGO,
get_fan_target, set_fan_target, 4);
static SENSOR_DEVICE_ATTR(fan6_target, S_IWUSR | S_IRUGO,
get_fan_target, set_fan_target, 5);
static SENSOR_DEVICE_ATTR(pwm1, S_IWUSR | S_IRUGO, get_pwm, set_pwm, 0);
static SENSOR_DEVICE_ATTR(pwm2, S_IWUSR | S_IRUGO, get_pwm, set_pwm, 1);
static SENSOR_DEVICE_ATTR(pwm3, S_IWUSR | S_IRUGO, get_pwm, set_pwm, 2);
static SENSOR_DEVICE_ATTR(pwm4, S_IWUSR | S_IRUGO, get_pwm, set_pwm, 3);
static SENSOR_DEVICE_ATTR(pwm5, S_IWUSR | S_IRUGO, get_pwm, set_pwm, 4);
static SENSOR_DEVICE_ATTR(pwm6, S_IWUSR | S_IRUGO, get_pwm, set_pwm, 5);
static SENSOR_DEVICE_ATTR(pwm1_enable, S_IWUSR | S_IRUGO,
get_pwm_enable, set_pwm_enable, 0);
static SENSOR_DEVICE_ATTR(pwm2_enable, S_IWUSR | S_IRUGO,
get_pwm_enable, set_pwm_enable, 1);
static SENSOR_DEVICE_ATTR(pwm3_enable, S_IWUSR | S_IRUGO,
get_pwm_enable, set_pwm_enable, 2);
static SENSOR_DEVICE_ATTR(pwm4_enable, S_IWUSR | S_IRUGO,
get_pwm_enable, set_pwm_enable, 3);
static SENSOR_DEVICE_ATTR(pwm5_enable, S_IWUSR | S_IRUGO,
get_pwm_enable, set_pwm_enable, 4);
static SENSOR_DEVICE_ATTR(pwm6_enable, S_IWUSR | S_IRUGO,
get_pwm_enable, set_pwm_enable, 5);
static struct attribute *max31790_attrs[] = {
&sensor_dev_attr_fan1_input.dev_attr.attr,
&sensor_dev_attr_fan2_input.dev_attr.attr,
&sensor_dev_attr_fan3_input.dev_attr.attr,
&sensor_dev_attr_fan4_input.dev_attr.attr,
&sensor_dev_attr_fan5_input.dev_attr.attr,
&sensor_dev_attr_fan6_input.dev_attr.attr,
&sensor_dev_attr_fan1_fault.dev_attr.attr,
&sensor_dev_attr_fan2_fault.dev_attr.attr,
&sensor_dev_attr_fan3_fault.dev_attr.attr,
&sensor_dev_attr_fan4_fault.dev_attr.attr,
&sensor_dev_attr_fan5_fault.dev_attr.attr,
&sensor_dev_attr_fan6_fault.dev_attr.attr,
&sensor_dev_attr_fan7_input.dev_attr.attr,
&sensor_dev_attr_fan8_input.dev_attr.attr,
&sensor_dev_attr_fan9_input.dev_attr.attr,
&sensor_dev_attr_fan10_input.dev_attr.attr,
&sensor_dev_attr_fan11_input.dev_attr.attr,
&sensor_dev_attr_fan12_input.dev_attr.attr,
&sensor_dev_attr_fan7_fault.dev_attr.attr,
&sensor_dev_attr_fan8_fault.dev_attr.attr,
&sensor_dev_attr_fan9_fault.dev_attr.attr,
&sensor_dev_attr_fan10_fault.dev_attr.attr,
&sensor_dev_attr_fan11_fault.dev_attr.attr,
&sensor_dev_attr_fan12_fault.dev_attr.attr,
&sensor_dev_attr_fan1_target.dev_attr.attr,
&sensor_dev_attr_fan2_target.dev_attr.attr,
&sensor_dev_attr_fan3_target.dev_attr.attr,
&sensor_dev_attr_fan4_target.dev_attr.attr,
&sensor_dev_attr_fan5_target.dev_attr.attr,
&sensor_dev_attr_fan6_target.dev_attr.attr,
&sensor_dev_attr_pwm1.dev_attr.attr,
&sensor_dev_attr_pwm2.dev_attr.attr,
&sensor_dev_attr_pwm3.dev_attr.attr,
&sensor_dev_attr_pwm4.dev_attr.attr,
&sensor_dev_attr_pwm5.dev_attr.attr,
&sensor_dev_attr_pwm6.dev_attr.attr,
&sensor_dev_attr_pwm1_enable.dev_attr.attr,
&sensor_dev_attr_pwm2_enable.dev_attr.attr,
&sensor_dev_attr_pwm3_enable.dev_attr.attr,
&sensor_dev_attr_pwm4_enable.dev_attr.attr,
&sensor_dev_attr_pwm5_enable.dev_attr.attr,
&sensor_dev_attr_pwm6_enable.dev_attr.attr,
NULL
static const u32 max31790_fan_config[] = {
HWMON_F_INPUT | HWMON_F_TARGET | HWMON_F_FAULT,
HWMON_F_INPUT | HWMON_F_TARGET | HWMON_F_FAULT,
HWMON_F_INPUT | HWMON_F_TARGET | HWMON_F_FAULT,
HWMON_F_INPUT | HWMON_F_TARGET | HWMON_F_FAULT,
HWMON_F_INPUT | HWMON_F_TARGET | HWMON_F_FAULT,
HWMON_F_INPUT | HWMON_F_TARGET | HWMON_F_FAULT,
HWMON_F_INPUT | HWMON_F_FAULT,
HWMON_F_INPUT | HWMON_F_FAULT,
HWMON_F_INPUT | HWMON_F_FAULT,
HWMON_F_INPUT | HWMON_F_FAULT,
HWMON_F_INPUT | HWMON_F_FAULT,
HWMON_F_INPUT | HWMON_F_FAULT,
0
};
static umode_t max31790_attrs_visible(struct kobject *kobj,
struct attribute *a, int n)
{
struct device *dev = container_of(kobj, struct device, kobj);
struct max31790_data *data = dev_get_drvdata(dev);
struct device_attribute *devattr =
container_of(a, struct device_attribute, attr);
int index = to_sensor_dev_attr(devattr)->index % NR_CHANNEL;
u8 fan_config;
static const struct hwmon_channel_info max31790_fan = {
.type = hwmon_fan,
.config = max31790_fan_config,
};
fan_config = data->fan_config[index];
static const u32 max31790_pwm_config[] = {
HWMON_PWM_INPUT | HWMON_PWM_ENABLE,
HWMON_PWM_INPUT | HWMON_PWM_ENABLE,
HWMON_PWM_INPUT | HWMON_PWM_ENABLE,
HWMON_PWM_INPUT | HWMON_PWM_ENABLE,
HWMON_PWM_INPUT | HWMON_PWM_ENABLE,
HWMON_PWM_INPUT | HWMON_PWM_ENABLE,
0
};
if (n >= NR_CHANNEL * 2 && n < NR_CHANNEL * 4 &&
!(fan_config & MAX31790_FAN_CFG_TACH_INPUT))
return 0;
if (n >= NR_CHANNEL * 4 && (fan_config & MAX31790_FAN_CFG_TACH_INPUT))
return 0;
static const struct hwmon_channel_info max31790_pwm = {
.type = hwmon_pwm,
.config = max31790_pwm_config,
};
return a->mode;
}
static const struct hwmon_channel_info *max31790_info[] = {
&max31790_fan,
&max31790_pwm,
NULL
};
static const struct hwmon_ops max31790_hwmon_ops = {
.is_visible = max31790_is_visible,
.read = max31790_read,
.write = max31790_write,
};
static const struct attribute_group max31790_group = {
.attrs = max31790_attrs,
.is_visible = max31790_attrs_visible,
static const struct hwmon_chip_info max31790_chip_info = {
.ops = &max31790_hwmon_ops,
.info = max31790_info,
};
__ATTRIBUTE_GROUPS(max31790);
static int max31790_init_client(struct i2c_client *client,
struct max31790_data *data)
......@@ -575,8 +500,10 @@ static int max31790_probe(struct i2c_client *client,
if (err)
return err;
hwmon_dev = devm_hwmon_device_register_with_groups(dev,
client->name, data, max31790_groups);
hwmon_dev = devm_hwmon_device_register_with_info(dev, client->name,
data,
&max31790_chip_info,
NULL);
return PTR_ERR_OR_ZERO(hwmon_dev);
}
......
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