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@@ -287,6 +287,8 @@ struct w83791d_data {
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/* PWMs */
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u8 pwm[5]; /* pwm duty cycle */
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+ u8 pwm_enable[3]; /* pwm enable status for fan 1-3
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+ (fan 4-5 only support manual mode) */
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/* Misc */
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u32 alarms; /* realtime status register encoding,combined */
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@@ -707,6 +709,71 @@ static struct sensor_device_attribute sda_pwm[] = {
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show_pwm, store_pwm, 4),
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};
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+static ssize_t show_pwmenable(struct device *dev, struct device_attribute *attr,
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+ char *buf)
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+{
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+ struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
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+ int nr = sensor_attr->index;
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+ struct w83791d_data *data = w83791d_update_device(dev);
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+ return sprintf(buf, "%u\n", data->pwm_enable[nr] + 1);
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+}
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+
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+static ssize_t store_pwmenable(struct device *dev,
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+ struct device_attribute *attr, const char *buf, size_t count)
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+{
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+ struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr);
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+ struct i2c_client *client = to_i2c_client(dev);
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+ struct w83791d_data *data = i2c_get_clientdata(client);
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+ int nr = sensor_attr->index;
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+ unsigned long val;
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+ u8 reg_cfg_tmp;
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+ u8 reg_idx = 0;
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+ u8 val_shift = 0;
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+ u8 keep_mask = 0;
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+
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+ int ret = strict_strtoul(buf, 10, &val);
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+
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+ if (ret || val < 1 || val > 3)
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+ return -EINVAL;
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+
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+ mutex_lock(&data->update_lock);
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+ data->pwm_enable[nr] = val - 1;
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+ switch (nr) {
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+ case 0:
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+ reg_idx = 0;
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+ val_shift = 2;
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+ keep_mask = 0xf3;
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+ break;
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+ case 1:
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+ reg_idx = 0;
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+ val_shift = 4;
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+ keep_mask = 0xcf;
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+ break;
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+ case 2:
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+ reg_idx = 1;
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+ val_shift = 2;
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+ keep_mask = 0xf3;
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+ break;
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+ }
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+
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+ reg_cfg_tmp = w83791d_read(client, W83791D_REG_FAN_CFG[reg_idx]);
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+ reg_cfg_tmp = (reg_cfg_tmp & keep_mask) |
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+ data->pwm_enable[nr] << val_shift;
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+
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+ w83791d_write(client, W83791D_REG_FAN_CFG[reg_idx], reg_cfg_tmp);
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+ mutex_unlock(&data->update_lock);
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+
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+ return count;
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+}
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+static struct sensor_device_attribute sda_pwmenable[] = {
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+ SENSOR_ATTR(pwm1_enable, S_IWUSR | S_IRUGO,
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+ show_pwmenable, store_pwmenable, 0),
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+ SENSOR_ATTR(pwm2_enable, S_IWUSR | S_IRUGO,
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+ show_pwmenable, store_pwmenable, 1),
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+ SENSOR_ATTR(pwm3_enable, S_IWUSR | S_IRUGO,
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+ show_pwmenable, store_pwmenable, 2),
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+};
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+
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/* read/write the temperature1, includes measured value and limits */
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static ssize_t show_temp1(struct device *dev, struct device_attribute *devattr,
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char *buf)
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@@ -974,6 +1041,9 @@ static struct attribute *w83791d_attributes[] = {
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&sda_pwm[0].dev_attr.attr,
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&sda_pwm[1].dev_attr.attr,
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&sda_pwm[2].dev_attr.attr,
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+ &sda_pwmenable[0].dev_attr.attr,
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+ &sda_pwmenable[1].dev_attr.attr,
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+ &sda_pwmenable[2].dev_attr.attr,
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NULL
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};
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@@ -1325,6 +1395,15 @@ static struct w83791d_data *w83791d_update_device(struct device *dev)
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W83791D_REG_PWM[i]);
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}
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+ /* Update PWM enable status */
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+ for (i = 0; i < 2; i++) {
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+ reg_array_tmp[i] = w83791d_read(client,
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+ W83791D_REG_FAN_CFG[i]);
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+ }
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+ data->pwm_enable[0] = (reg_array_tmp[0] >> 2) & 0x03;
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+ data->pwm_enable[1] = (reg_array_tmp[0] >> 4) & 0x03;
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+ data->pwm_enable[2] = (reg_array_tmp[1] >> 2) & 0x03;
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+
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/* Update the first temperature sensor */
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for (i = 0; i < 3; i++) {
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data->temp1[i] = w83791d_read(client,
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