diff options
Diffstat (limited to 'drivers/hwmon/f71805f.c')
| -rw-r--r-- | drivers/hwmon/f71805f.c | 46 |
1 files changed, 43 insertions, 3 deletions
diff --git a/drivers/hwmon/f71805f.c b/drivers/hwmon/f71805f.c index 173e2d2cb49..29a3984af73 100644 --- a/drivers/hwmon/f71805f.c +++ b/drivers/hwmon/f71805f.c @@ -126,6 +126,7 @@ superio_exit(int base) /* individual register bits */ #define FAN_CTRL_SKIP 0x80 +#define FAN_CTRL_DC_MODE 0x10 #define FAN_CTRL_MODE_MASK 0x03 #define FAN_CTRL_MODE_SPEED 0x00 #define FAN_CTRL_MODE_TEMPERATURE 0x01 @@ -233,6 +234,11 @@ static inline u8 pwm_freq_to_reg(unsigned long val) return 1000000UL / (val << 8); } +static inline int pwm_mode_from_reg(u8 reg) +{ + return !(reg & FAN_CTRL_DC_MODE); +} + static inline long temp_from_reg(u8 reg) { return (reg * 1000); @@ -562,6 +568,16 @@ static ssize_t show_pwm_freq(struct device *dev, struct device_attribute return sprintf(buf, "%lu\n", pwm_freq_from_reg(data->pwm_freq[nr])); } +static ssize_t show_pwm_mode(struct device *dev, struct device_attribute + *devattr, char *buf) +{ + struct f71805f_data *data = f71805f_update_device(dev); + struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); + int nr = attr->index; + + return sprintf(buf, "%d\n", pwm_mode_from_reg(data->fan_ctrl[nr])); +} + static ssize_t set_pwm(struct device *dev, struct device_attribute *devattr, const char *buf, size_t count) { @@ -839,16 +855,19 @@ static SENSOR_DEVICE_ATTR(pwm1_enable, S_IRUGO | S_IWUSR, show_pwm_enable, set_pwm_enable, 0); static SENSOR_DEVICE_ATTR(pwm1_freq, S_IRUGO | S_IWUSR, show_pwm_freq, set_pwm_freq, 0); +static SENSOR_DEVICE_ATTR(pwm1_mode, S_IRUGO, show_pwm_mode, NULL, 0); static SENSOR_DEVICE_ATTR(pwm2, S_IRUGO, show_pwm, set_pwm, 1); static SENSOR_DEVICE_ATTR(pwm2_enable, S_IRUGO | S_IWUSR, show_pwm_enable, set_pwm_enable, 1); static SENSOR_DEVICE_ATTR(pwm2_freq, S_IRUGO | S_IWUSR, show_pwm_freq, set_pwm_freq, 1); +static SENSOR_DEVICE_ATTR(pwm2_mode, S_IRUGO, show_pwm_mode, NULL, 1); static SENSOR_DEVICE_ATTR(pwm3, S_IRUGO, show_pwm, set_pwm, 2); static SENSOR_DEVICE_ATTR(pwm3_enable, S_IRUGO | S_IWUSR, show_pwm_enable, set_pwm_enable, 2); static SENSOR_DEVICE_ATTR(pwm3_freq, S_IRUGO | S_IWUSR, show_pwm_freq, set_pwm_freq, 2); +static SENSOR_DEVICE_ATTR(pwm3_mode, S_IRUGO, show_pwm_mode, NULL, 2); static SENSOR_DEVICE_ATTR(in0_alarm, S_IRUGO, show_alarm, NULL, 0); static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 1); @@ -944,7 +963,7 @@ static struct attribute *f71805f_attributes_fan[3][7] = { &sensor_dev_attr_fan1_alarm.dev_attr.attr, &sensor_dev_attr_pwm1.dev_attr.attr, &sensor_dev_attr_pwm1_enable.dev_attr.attr, - &sensor_dev_attr_pwm1_freq.dev_attr.attr, + &sensor_dev_attr_pwm1_mode.dev_attr.attr, NULL }, { &sensor_dev_attr_fan2_input.dev_attr.attr, @@ -952,7 +971,7 @@ static struct attribute *f71805f_attributes_fan[3][7] = { &sensor_dev_attr_fan2_alarm.dev_attr.attr, &sensor_dev_attr_pwm2.dev_attr.attr, &sensor_dev_attr_pwm2_enable.dev_attr.attr, - &sensor_dev_attr_pwm2_freq.dev_attr.attr, + &sensor_dev_attr_pwm2_mode.dev_attr.attr, NULL }, { &sensor_dev_attr_fan3_input.dev_attr.attr, @@ -960,7 +979,7 @@ static struct attribute *f71805f_attributes_fan[3][7] = { &sensor_dev_attr_fan3_alarm.dev_attr.attr, &sensor_dev_attr_pwm3.dev_attr.attr, &sensor_dev_attr_pwm3_enable.dev_attr.attr, - &sensor_dev_attr_pwm3_freq.dev_attr.attr, + &sensor_dev_attr_pwm3_mode.dev_attr.attr, NULL } }; @@ -971,6 +990,19 @@ static const struct attribute_group f71805f_group_fan[3] = { { .attrs = f71805f_attributes_fan[2] }, }; +/* We don't include pwm_freq files in the arrays above, because they must be + created conditionally (only if pwm_mode is 1 == PWM) */ +static struct attribute *f71805f_attributes_pwm_freq[] = { + &sensor_dev_attr_pwm1_freq.dev_attr.attr, + &sensor_dev_attr_pwm2_freq.dev_attr.attr, + &sensor_dev_attr_pwm3_freq.dev_attr.attr, + NULL +}; + +static const struct attribute_group f71805f_group_pwm_freq = { + .attrs = f71805f_attributes_pwm_freq, +}; + /* We also need an indexed access to pwmN files to toggle writability */ static struct attribute *f71805f_attr_pwm[] = { &sensor_dev_attr_pwm1.dev_attr.attr, @@ -1034,6 +1066,12 @@ static int __devinit f71805f_probe(struct platform_device *pdev) if ((err = sysfs_create_group(&pdev->dev.kobj, &f71805f_group_fan[i]))) goto exit_remove_files; + /* If control mode is PWM, create pwm_freq file */ + if (!(data->fan_ctrl[i] & FAN_CTRL_DC_MODE)) { + if ((err = sysfs_create_file(&pdev->dev.kobj, + f71805f_attributes_pwm_freq[i]))) + goto exit_remove_files; + } /* If PWM is in manual mode, add write permission */ if (data->fan_ctrl[i] & FAN_CTRL_MODE_MANUAL) { if ((err = sysfs_chmod_file(&pdev->dev.kobj, @@ -1059,6 +1097,7 @@ exit_remove_files: sysfs_remove_group(&pdev->dev.kobj, &f71805f_group); for (i = 0; i < 3; i++) sysfs_remove_group(&pdev->dev.kobj, &f71805f_group_fan[i]); + sysfs_remove_group(&pdev->dev.kobj, &f71805f_group_pwm_freq); exit_free: platform_set_drvdata(pdev, NULL); kfree(data); @@ -1076,6 +1115,7 @@ static int __devexit f71805f_remove(struct platform_device *pdev) sysfs_remove_group(&pdev->dev.kobj, &f71805f_group); for (i = 0; i < 3; i++) sysfs_remove_group(&pdev->dev.kobj, &f71805f_group_fan[i]); + sysfs_remove_group(&pdev->dev.kobj, &f71805f_group_pwm_freq); kfree(data); return 0; |