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hwmon: (w83792d) Additional PWM outputs support

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Add pwm[4-7] and the associated pwm[4-7]_mode attributes.

Signed-off-by: Roger Lucas <vt8231@hiddenengine.co.uk>
Signed-off-by: Jean Delvare <jdelvare@suse.de>
This commit is contained in:
Roger Lucas 2015-05-12 22:01:37 +01:00 committed by Jean Delvare
parent 9bdc771f2c
commit f617f7310c
2 changed files with 35 additions and 10 deletions
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18
Documentation/hwmon/w83792d
View file

@ -8,6 +8,7 @@ Supported chips:
Datasheet: http://www.winbond.com.tw
Author: Shane Huang (Winbond)
Updated: Roger Lucas
Module Parameters
@ -38,9 +39,16 @@ parameter; this will put it into a more well-behaved state first.
The driver implements three temperature sensors, seven fan rotation speed
sensors, nine voltage sensors, and two automatic fan regulation
strategies called: Smart Fan I (Thermal Cruise mode) and Smart Fan II.
Automatic fan control mode is possible only for fan1-fan3. Fan4-fan7 can run
synchronized with selected fan (fan1-fan3). This functionality and manual PWM
control for fan4-fan7 is not yet implemented.
The driver also implements up to seven fan control outputs: pwm1-7. Pwm1-7
can be configured to PWM output or Analogue DC output via their associated
pwmX_mode. Outputs pwm4 through pwm7 may or may not be present depending on
how the W83792AD/D was configured by the BIOS.
Automatic fan control mode is possible only for fan1-fan3.
For all pwmX outputs, a value of 0 means minimum fan speed and a value of
255 means maximum fan speed.
Temperatures are measured in degrees Celsius and measurement resolution is 1
degC for temp1 and 0.5 degC for temp2 and temp3. An alarm is triggered when
@ -157,14 +165,14 @@ for each fan.
/sys files
----------
pwm[1-3] - this file stores PWM duty cycle or DC value (fan speed) in range:
pwm[1-7] - this file stores PWM duty cycle or DC value (fan speed) in range:
0 (stop) to 255 (full)
pwm[1-3]_enable - this file controls mode of fan/temperature control:
* 0 Disabled
* 1 Manual mode
* 2 Smart Fan II
* 3 Thermal Cruise
pwm[1-3]_mode - Select PWM of DC mode
pwm[1-7]_mode - Select PWM or DC mode
* 0 DC
* 1 PWM
thermal_cruise[1-3] - Selects the desired temperature for cruise (degC)

27
drivers/hwmon/w83792d.c
View file

@ -289,10 +289,7 @@ struct w83792d_data {
u8 temp1[3]; /* current, over, thyst */
u8 temp_add[2][6]; /* Register value */
u8 fan_div[7]; /* Register encoding, shifted right */
u8 pwm[7]; /*
* We only consider the first 3 set of pwm,
* although 792 chip has 7 set of pwm.
*/
u8 pwm[7]; /* The 7 PWM outputs */
u8 pwmenable[3];
u32 alarms; /* realtime status register encoding,combined */
u8 chassis; /* Chassis status */
@ -1075,6 +1072,10 @@ static DEVICE_ATTR(intrusion0_alarm, S_IRUGO | S_IWUSR,
static SENSOR_DEVICE_ATTR(pwm1, S_IWUSR | S_IRUGO, show_pwm, store_pwm, 0);
static SENSOR_DEVICE_ATTR(pwm2, S_IWUSR | S_IRUGO, show_pwm, store_pwm, 1);
static SENSOR_DEVICE_ATTR(pwm3, S_IWUSR | S_IRUGO, show_pwm, store_pwm, 2);
static SENSOR_DEVICE_ATTR(pwm4, S_IWUSR | S_IRUGO, show_pwm, store_pwm, 3);
static SENSOR_DEVICE_ATTR(pwm5, S_IWUSR | S_IRUGO, show_pwm, store_pwm, 4);
static SENSOR_DEVICE_ATTR(pwm6, S_IWUSR | S_IRUGO, show_pwm, store_pwm, 5);
static SENSOR_DEVICE_ATTR(pwm7, S_IWUSR | S_IRUGO, show_pwm, store_pwm, 6);
static SENSOR_DEVICE_ATTR(pwm1_enable, S_IWUSR | S_IRUGO,
show_pwmenable, store_pwmenable, 1);
static SENSOR_DEVICE_ATTR(pwm2_enable, S_IWUSR | S_IRUGO,
@ -1087,6 +1088,14 @@ static SENSOR_DEVICE_ATTR(pwm2_mode, S_IWUSR | S_IRUGO,
show_pwm_mode, store_pwm_mode, 1);
static SENSOR_DEVICE_ATTR(pwm3_mode, S_IWUSR | S_IRUGO,
show_pwm_mode, store_pwm_mode, 2);
static SENSOR_DEVICE_ATTR(pwm4_mode, S_IWUSR | S_IRUGO,
show_pwm_mode, store_pwm_mode, 3);
static SENSOR_DEVICE_ATTR(pwm5_mode, S_IWUSR | S_IRUGO,
show_pwm_mode, store_pwm_mode, 4);
static SENSOR_DEVICE_ATTR(pwm6_mode, S_IWUSR | S_IRUGO,
show_pwm_mode, store_pwm_mode, 5);
static SENSOR_DEVICE_ATTR(pwm7_mode, S_IWUSR | S_IRUGO,
show_pwm_mode, store_pwm_mode, 6);
static SENSOR_DEVICE_ATTR(tolerance1, S_IWUSR | S_IRUGO,
show_tolerance, store_tolerance, 1);
static SENSOR_DEVICE_ATTR(tolerance2, S_IWUSR | S_IRUGO,
@ -1177,30 +1186,38 @@ static SENSOR_DEVICE_ATTR(fan6_div, S_IWUSR | S_IRUGO,
static SENSOR_DEVICE_ATTR(fan7_div, S_IWUSR | S_IRUGO,
show_fan_div, store_fan_div, 7);
static struct attribute *w83792d_attributes_fan[4][5] = {
static struct attribute *w83792d_attributes_fan[4][7] = {
{
&sensor_dev_attr_fan4_input.dev_attr.attr,
&sensor_dev_attr_fan4_min.dev_attr.attr,
&sensor_dev_attr_fan4_div.dev_attr.attr,
&sensor_dev_attr_fan4_alarm.dev_attr.attr,
&sensor_dev_attr_pwm4.dev_attr.attr,
&sensor_dev_attr_pwm4_mode.dev_attr.attr,
NULL
}, {
&sensor_dev_attr_fan5_input.dev_attr.attr,
&sensor_dev_attr_fan5_min.dev_attr.attr,
&sensor_dev_attr_fan5_div.dev_attr.attr,
&sensor_dev_attr_fan5_alarm.dev_attr.attr,
&sensor_dev_attr_pwm5.dev_attr.attr,
&sensor_dev_attr_pwm5_mode.dev_attr.attr,
NULL
}, {
&sensor_dev_attr_fan6_input.dev_attr.attr,
&sensor_dev_attr_fan6_min.dev_attr.attr,
&sensor_dev_attr_fan6_div.dev_attr.attr,
&sensor_dev_attr_fan6_alarm.dev_attr.attr,
&sensor_dev_attr_pwm6.dev_attr.attr,
&sensor_dev_attr_pwm6_mode.dev_attr.attr,
NULL
}, {
&sensor_dev_attr_fan7_input.dev_attr.attr,
&sensor_dev_attr_fan7_min.dev_attr.attr,
&sensor_dev_attr_fan7_div.dev_attr.attr,
&sensor_dev_attr_fan7_alarm.dev_attr.attr,
&sensor_dev_attr_pwm7.dev_attr.attr,
&sensor_dev_attr_pwm7_mode.dev_attr.attr,
NULL
}
};