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hwmon: (adt7475) Implement pwm_use_point2_pwm_at_crit 

Implement the non-standard pwm_use_point2_pwm_at_crit sysfs attribute
as the adt7473 driver did.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Cc: "Mark M. Hoffman" <mhoffman@lightlink.com>
Cc: Hans de Goede <hdegoede@redhat.com>
Cc: Jordan Crouse <jordan@cosmicpenguin.net>
Cc: "Darrick J. Wong" <djwong@us.ibm.com>
hifive-unleashed-5.1
Jean Delvare 2009-12-09 20:36:03 +01:00
parent f890c6a3b6
commit f99318b254
1 changed files with 42 additions and 0 deletions
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42
drivers/hwmon/adt7475.c
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@ -76,6 +76,9 @@
#define REG_EXTEND1 0x76
#define REG_EXTEND2 0x77
#define REG_CONFIG5 0x7C
#define REG_CONFIG4 0x7D
#define CONFIG4_MAXDUTY 0x08
#define CONFIG5_TWOSCOMP 0x01
#define CONFIG5_TEMPOFFSET 0x02
@ -132,6 +135,7 @@ struct adt7475_data {
unsigned long limits_updated;
char valid;
u8 config4;
u8 config5;
u16 alarms;
u16 voltage[3][3];
@ -779,6 +783,38 @@ static ssize_t set_pwmfreq(struct device *dev, struct device_attribute *attr,
return count;
}
static ssize_t show_pwm_at_crit(struct device *dev,
struct device_attribute *devattr, char *buf)
{
struct adt7475_data *data = adt7475_update_device(dev);
return sprintf(buf, "%d\n", !!(data->config4 & CONFIG4_MAXDUTY));
}
static ssize_t set_pwm_at_crit(struct device *dev,
struct device_attribute *devattr,
const char *buf, size_t count)
{
struct i2c_client *client = to_i2c_client(dev);
struct adt7475_data *data = i2c_get_clientdata(client);
long val;
if (strict_strtol(buf, 10, &val))
return -EINVAL;
if (val != 0 && val != 1)
return -EINVAL;
mutex_lock(&data->lock);
data->config4 = i2c_smbus_read_byte_data(client, REG_CONFIG4);
if (val)
data->config4 |= CONFIG4_MAXDUTY;
else
data->config4 &= ~CONFIG4_MAXDUTY;
i2c_smbus_write_byte_data(client, REG_CONFIG4, data->config4);
mutex_unlock(&data->lock);
return count;
}
static SENSOR_DEVICE_ATTR_2(in1_input, S_IRUGO, show_voltage, NULL, INPUT, 0);
static SENSOR_DEVICE_ATTR_2(in1_max, S_IRUGO | S_IWUSR, show_voltage,
set_voltage, MAX, 0);
@ -894,6 +930,10 @@ static SENSOR_DEVICE_ATTR_2(pwm3_auto_point1_pwm, S_IRUGO | S_IWUSR, show_pwm,
static SENSOR_DEVICE_ATTR_2(pwm3_auto_point2_pwm, S_IRUGO | S_IWUSR, show_pwm,
set_pwm, MAX, 2);
/* Non-standard name, might need revisiting */
static DEVICE_ATTR(pwm_use_point2_pwm_at_crit, S_IWUSR | S_IRUGO,
show_pwm_at_crit, set_pwm_at_crit);
static struct attribute *adt7475_attrs[] = {
&sensor_dev_attr_in1_input.dev_attr.attr,
&sensor_dev_attr_in1_max.dev_attr.attr,
@ -962,6 +1002,7 @@ static struct attribute *adt7475_attrs[] = {
&sensor_dev_attr_pwm3_auto_channels_temp.dev_attr.attr,
&sensor_dev_attr_pwm3_auto_point1_pwm.dev_attr.attr,
&sensor_dev_attr_pwm3_auto_point2_pwm.dev_attr.attr,
&dev_attr_pwm_use_point2_pwm_at_crit.attr,
NULL,
};
@ -1160,6 +1201,7 @@ static struct adt7475_data *adt7475_update_device(struct device *dev)
/* Limits and settings, should never change update every 60 seconds */
if (time_after(jiffies, data->limits_updated + HZ * 60) ||
!data->valid) {
data->config4 = adt7475_read(REG_CONFIG4);
data->config5 = adt7475_read(REG_CONFIG5);
for (i = 0; i < ADT7475_VOLTAGE_COUNT; i++) {