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Subject[PATCH v2] hwmon: (nct7802) Add pwm mode
Date
Introduced: show_pwm_mode, pwm1_mode, pwm2_mode, pwm2_mode

---
Changelog:
Fixed in v2:
- used SENSOR_DEVICE_ATTR instead of SENSOR_DEVICE_ATTR_2 for pwmX_mode

Signed-off-by: Constantine Shulyupin <const@MakeLinux.com>
---
drivers/hwmon/nct7802.c | 26 ++++++++++++++++++++++++++
1 file changed, 26 insertions(+)

diff --git a/drivers/hwmon/nct7802.c b/drivers/hwmon/nct7802.c
index 56b6f7b..a0d9010 100644
--- a/drivers/hwmon/nct7802.c
+++ b/drivers/hwmon/nct7802.c
@@ -102,6 +102,24 @@ static ssize_t store_temp_type(struct device *dev,
return err ? : count;
}

+static ssize_t show_pwm_mode(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ struct sensor_device_attribute *sattr = to_sensor_dev_attr(attr);
+ struct nct7802_data *data = dev_get_drvdata(dev);
+ unsigned int regval;
+ int ret;
+
+ if (sattr->index > 1)
+ return sprintf(buf, "1\n");
+
+ ret = regmap_read(data->regmap, 0x5E, &regval);
+ if (ret < 0)
+ return ret;
+
+ return sprintf(buf, "%u\n", !(regval & (1 << sattr->index)));
+}
+
static ssize_t show_pwm(struct device *dev, struct device_attribute *devattr,
char *buf)
{
@@ -765,6 +783,11 @@ static SENSOR_DEVICE_ATTR_2(fan3_alarm, S_IRUGO, show_alarm, NULL, 0x1a, 2);
static SENSOR_DEVICE_ATTR_2(fan3_beep, S_IRUGO | S_IWUSR, show_beep, store_beep,
0x5b, 2);

+/* 7.2.89 Fan Control Output Type */
+static SENSOR_DEVICE_ATTR(pwm1_mode, S_IRUGO, show_pwm_mode, NULL, 0);
+static SENSOR_DEVICE_ATTR(pwm2_mode, S_IRUGO, show_pwm_mode, NULL, 1);
+static SENSOR_DEVICE_ATTR(pwm3_mode, S_IRUGO, show_pwm_mode, NULL, 2);
+
/* 7.2.91... Fan Control Output Value */
static SENSOR_DEVICE_ATTR(pwm1, S_IRUGO | S_IWUSR, show_pwm, store_pwm, 0x60);
static SENSOR_DEVICE_ATTR(pwm2, S_IRUGO | S_IWUSR, show_pwm, store_pwm, 0x61);
@@ -809,8 +832,11 @@ static struct attribute_group nct7802_fan_group = {
};

static struct attribute *nct7802_pwm_attrs[] = {
+ &sensor_dev_attr_pwm1_mode.dev_attr.attr,
&sensor_dev_attr_pwm1.dev_attr.attr,
+ &sensor_dev_attr_pwm2_mode.dev_attr.attr,
&sensor_dev_attr_pwm2.dev_attr.attr,
+ &sensor_dev_attr_pwm3_mode.dev_attr.attr,
&sensor_dev_attr_pwm3.dev_attr.attr,
NULL
};
--
1.9.1


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