Implement the non-standard pwm_use_point2_pwm_at_crit sysfs attribute
as the adt7473 driver did.
Signed-off-by: Jean Delvare <khali@xxxxxxxxxxxx>
Cc: "Mark M. Hoffman" <mhoffman@xxxxxxxxxxxxx>
Cc: Hans de Goede <hdegoede@xxxxxxxxxx>
Cc: Jordan Crouse <jordan@xxxxxxxxxxxxxxxxx>
Cc: "Darrick J. Wong" <djwong@xxxxxxxxxx>
---
drivers/hwmon/adt7475.c | 42 ++++++++++++++++++++++++++++++++++++++++++
1 file changed, 42 insertions(+)
--- linux-2.6.32-rc7.orig/drivers/hwmon/adt7475.c 2009-11-14 13:15:14.000000000 +0100
+++ linux-2.6.32-rc7/drivers/hwmon/adt7475.c 2009-11-14 14:33:53.000000000 +0100
@@ -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
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_po
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_upda
/* 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++) {
--
Jean Delvare
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