[lm-sensors] Additional PWM driver support for w83792d

From: <vt8231@hiddenengine.co.uk>
To: lm-sensors@vger.kernel.org
Subject: [lm-sensors] Additional PWM driver support for w83792d
Date: Sat, 09 May 2015 12:57:41 +0000	[thread overview]
Message-ID: <003901d08a57$bc46f8a0$34d4e9e0$@hiddenengine.co.uk> (raw)

Dear LM-Sensors,

I have a Dell FS12-NV7 server and it has two W83792G chips on it (as well as
an IT87).  One of the W83792G devices is connected to three fans on PWM
outputs 3,4 and 5 respectively.

I am running with Ubuntu 15.04 (Linux 3.19.0) and the W83792D driver only
has support for PWM outputs 1,2 and 3.

The patch below adds the 4 missing PWM outputs which are supported by the
chip.  This has been tested and works as expected on my motherboard.

--- linux-3.19.0/drivers/hwmon/w83792d.c        2015-02-09
02:54:22.000000000 +0000
+++ linux-3.19.0-new/drivers/hwmon/w83792d.c    2015-05-08
21:53:06.637515282 +0100
@@ -1075,6 +1075,10 @@
 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,
@@ -1270,6 +1274,10 @@
        &sensor_dev_attr_pwm3.dev_attr.attr,
        &sensor_dev_attr_pwm3_mode.dev_attr.attr,
        &sensor_dev_attr_pwm3_enable.dev_attr.attr,
+       &sensor_dev_attr_pwm4.dev_attr.attr,
+       &sensor_dev_attr_pwm5.dev_attr.attr,
+       &sensor_dev_attr_pwm6.dev_attr.attr,
+       &sensor_dev_attr_pwm7.dev_attr.attr,
        &dev_attr_alarms.attr,
        &dev_attr_intrusion0_alarm.attr,
        &sensor_dev_attr_tolerance1.dev_attr.attr,

I hope this patch is of use to others who are using the same server or have
a similar situation.

Best regards,

Roger Lucas


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