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-rw-r--r--drivers/hwmon/it87.c182
1 files changed, 180 insertions, 2 deletions
diff --git a/drivers/hwmon/it87.c b/drivers/hwmon/it87.c
index 8282282eb4ca..bbb0c7443b9b 100644
--- a/drivers/hwmon/it87.c
+++ b/drivers/hwmon/it87.c
@@ -192,6 +192,9 @@ static const u8 IT87_REG_FANX_MIN[] = { 0x1b, 0x1c, 0x1d, 0x85, 0x87 };
#define IT87_REG_CHIPID 0x58
+#define IT87_REG_AUTO_TEMP(nr, i) (0x60 + (nr) * 8 + (i))
+#define IT87_REG_AUTO_PWM(nr, i) (0x65 + (nr) * 8 + (i))
+
#define IN_TO_REG(val) (SENSORS_LIMIT((((val) + 8)/16),0,255))
#define IN_FROM_REG(val) ((val) * 16)
@@ -293,6 +296,10 @@ struct it87_data {
u8 pwm_ctrl[3]; /* Register value */
u8 pwm_duty[3]; /* Manual PWM value set by user (bit 6-0) */
u8 pwm_temp_map[3]; /* PWM to temp. chan. mapping (bits 1-0) */
+
+ /* Automatic fan speed control registers */
+ u8 auto_pwm[3][4]; /* [nr][3] is hard-coded */
+ s8 auto_temp[3][5]; /* [nr][0] is point1_temp_hyst */
};
static inline int has_16bit_fans(const struct it87_data *data)
@@ -307,6 +314,15 @@ static inline int has_16bit_fans(const struct it87_data *data)
|| data->type == it8720;
}
+static inline int has_old_autopwm(const struct it87_data *data)
+{
+ /* The old automatic fan speed control interface is implemented
+ by IT8705F chips up to revision F and IT8712F chips up to
+ revision G. */
+ return (data->type == it87 && data->revision < 0x03)
+ || (data->type == it8712 && data->revision < 0x08);
+}
+
static int it87_probe(struct platform_device *pdev);
static int __devexit it87_remove(struct platform_device *pdev);
@@ -813,6 +829,13 @@ static ssize_t set_pwm_temp_map(struct device *dev,
long val;
u8 reg;
+ /* This check can go away if we ever support automatic fan speed
+ control on newer chips. */
+ if (!has_old_autopwm(data)) {
+ dev_notice(dev, "Mapping change disabled for safety reasons\n");
+ return -EINVAL;
+ }
+
if (strict_strtol(buf, 10, &val) < 0)
return -EINVAL;
@@ -842,6 +865,72 @@ static ssize_t set_pwm_temp_map(struct device *dev,
return count;
}
+static ssize_t show_auto_pwm(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct it87_data *data = it87_update_device(dev);
+ struct sensor_device_attribute_2 *sensor_attr =
+ to_sensor_dev_attr_2(attr);
+ int nr = sensor_attr->nr;
+ int point = sensor_attr->index;
+
+ return sprintf(buf, "%d\n", PWM_FROM_REG(data->auto_pwm[nr][point]));
+}
+
+static ssize_t set_auto_pwm(struct device *dev,
+ struct device_attribute *attr, const char *buf, size_t count)
+{
+ struct it87_data *data = dev_get_drvdata(dev);
+ struct sensor_device_attribute_2 *sensor_attr =
+ to_sensor_dev_attr_2(attr);
+ int nr = sensor_attr->nr;
+ int point = sensor_attr->index;
+ long val;
+
+ if (strict_strtol(buf, 10, &val) < 0 || val < 0 || val > 255)
+ return -EINVAL;
+
+ mutex_lock(&data->update_lock);
+ data->auto_pwm[nr][point] = PWM_TO_REG(val);
+ it87_write_value(data, IT87_REG_AUTO_PWM(nr, point),
+ data->auto_pwm[nr][point]);
+ mutex_unlock(&data->update_lock);
+ return count;
+}
+
+static ssize_t show_auto_temp(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct it87_data *data = it87_update_device(dev);
+ struct sensor_device_attribute_2 *sensor_attr =
+ to_sensor_dev_attr_2(attr);
+ int nr = sensor_attr->nr;
+ int point = sensor_attr->index;
+
+ return sprintf(buf, "%d\n", TEMP_FROM_REG(data->auto_temp[nr][point]));
+}
+
+static ssize_t set_auto_temp(struct device *dev,
+ struct device_attribute *attr, const char *buf, size_t count)
+{
+ struct it87_data *data = dev_get_drvdata(dev);
+ struct sensor_device_attribute_2 *sensor_attr =
+ to_sensor_dev_attr_2(attr);
+ int nr = sensor_attr->nr;
+ int point = sensor_attr->index;
+ long val;
+
+ if (strict_strtol(buf, 10, &val) < 0 || val < -128000 || val > 127000)
+ return -EINVAL;
+
+ mutex_lock(&data->update_lock);
+ data->auto_temp[nr][point] = TEMP_TO_REG(val);
+ it87_write_value(data, IT87_REG_AUTO_TEMP(nr, point),
+ data->auto_temp[nr][point]);
+ mutex_unlock(&data->update_lock);
+ return count;
+}
+
#define show_fan_offset(offset) \
static SENSOR_DEVICE_ATTR(fan##offset##_input, S_IRUGO, \
show_fan, NULL, offset - 1); \
@@ -863,8 +952,34 @@ static DEVICE_ATTR(pwm##offset##_freq, \
(offset == 1 ? S_IRUGO | S_IWUSR : S_IRUGO), \
show_pwm_freq, (offset == 1 ? set_pwm_freq : NULL)); \
static SENSOR_DEVICE_ATTR(pwm##offset##_auto_channels_temp, \
- S_IRUGO, show_pwm_temp_map, set_pwm_temp_map, \
- offset - 1);
+ S_IRUGO | S_IWUSR, show_pwm_temp_map, set_pwm_temp_map, \
+ offset - 1); \
+static SENSOR_DEVICE_ATTR_2(pwm##offset##_auto_point1_pwm, \
+ S_IRUGO | S_IWUSR, show_auto_pwm, set_auto_pwm, \
+ offset - 1, 0); \
+static SENSOR_DEVICE_ATTR_2(pwm##offset##_auto_point2_pwm, \
+ S_IRUGO | S_IWUSR, show_auto_pwm, set_auto_pwm, \
+ offset - 1, 1); \
+static SENSOR_DEVICE_ATTR_2(pwm##offset##_auto_point3_pwm, \
+ S_IRUGO | S_IWUSR, show_auto_pwm, set_auto_pwm, \
+ offset - 1, 2); \
+static SENSOR_DEVICE_ATTR_2(pwm##offset##_auto_point4_pwm, \
+ S_IRUGO, show_auto_pwm, NULL, offset - 1, 3); \
+static SENSOR_DEVICE_ATTR_2(pwm##offset##_auto_point1_temp, \
+ S_IRUGO | S_IWUSR, show_auto_temp, set_auto_temp, \
+ offset - 1, 1); \
+static SENSOR_DEVICE_ATTR_2(pwm##offset##_auto_point1_temp_hyst, \
+ S_IRUGO | S_IWUSR, show_auto_temp, set_auto_temp, \
+ offset - 1, 0); \
+static SENSOR_DEVICE_ATTR_2(pwm##offset##_auto_point2_temp, \
+ S_IRUGO | S_IWUSR, show_auto_temp, set_auto_temp, \
+ offset - 1, 2); \
+static SENSOR_DEVICE_ATTR_2(pwm##offset##_auto_point3_temp, \
+ S_IRUGO | S_IWUSR, show_auto_temp, set_auto_temp, \
+ offset - 1, 3); \
+static SENSOR_DEVICE_ATTR_2(pwm##offset##_auto_point4_temp, \
+ S_IRUGO | S_IWUSR, show_auto_temp, set_auto_temp, \
+ offset - 1, 4);
show_pwm_offset(1);
show_pwm_offset(2);
@@ -1219,6 +1334,47 @@ static const struct attribute_group it87_group_pwm[3] = {
{ .attrs = it87_attributes_pwm[2] },
};
+static struct attribute *it87_attributes_autopwm[3][9+1] = { {
+ &sensor_dev_attr_pwm1_auto_point1_pwm.dev_attr.attr,
+ &sensor_dev_attr_pwm1_auto_point2_pwm.dev_attr.attr,
+ &sensor_dev_attr_pwm1_auto_point3_pwm.dev_attr.attr,
+ &sensor_dev_attr_pwm1_auto_point4_pwm.dev_attr.attr,
+ &sensor_dev_attr_pwm1_auto_point1_temp.dev_attr.attr,
+ &sensor_dev_attr_pwm1_auto_point1_temp_hyst.dev_attr.attr,
+ &sensor_dev_attr_pwm1_auto_point2_temp.dev_attr.attr,
+ &sensor_dev_attr_pwm1_auto_point3_temp.dev_attr.attr,
+ &sensor_dev_attr_pwm1_auto_point4_temp.dev_attr.attr,
+ NULL
+}, {
+ &sensor_dev_attr_pwm2_auto_point1_pwm.dev_attr.attr,
+ &sensor_dev_attr_pwm2_auto_point2_pwm.dev_attr.attr,
+ &sensor_dev_attr_pwm2_auto_point3_pwm.dev_attr.attr,
+ &sensor_dev_attr_pwm2_auto_point4_pwm.dev_attr.attr,
+ &sensor_dev_attr_pwm2_auto_point1_temp.dev_attr.attr,
+ &sensor_dev_attr_pwm2_auto_point1_temp_hyst.dev_attr.attr,
+ &sensor_dev_attr_pwm2_auto_point2_temp.dev_attr.attr,
+ &sensor_dev_attr_pwm2_auto_point3_temp.dev_attr.attr,
+ &sensor_dev_attr_pwm2_auto_point4_temp.dev_attr.attr,
+ NULL
+}, {
+ &sensor_dev_attr_pwm3_auto_point1_pwm.dev_attr.attr,
+ &sensor_dev_attr_pwm3_auto_point2_pwm.dev_attr.attr,
+ &sensor_dev_attr_pwm3_auto_point3_pwm.dev_attr.attr,
+ &sensor_dev_attr_pwm3_auto_point4_pwm.dev_attr.attr,
+ &sensor_dev_attr_pwm3_auto_point1_temp.dev_attr.attr,
+ &sensor_dev_attr_pwm3_auto_point1_temp_hyst.dev_attr.attr,
+ &sensor_dev_attr_pwm3_auto_point2_temp.dev_attr.attr,
+ &sensor_dev_attr_pwm3_auto_point3_temp.dev_attr.attr,
+ &sensor_dev_attr_pwm3_auto_point4_temp.dev_attr.attr,
+ NULL
+} };
+
+static const struct attribute_group it87_group_autopwm[3] = {
+ { .attrs = it87_attributes_autopwm[0] },
+ { .attrs = it87_attributes_autopwm[1] },
+ { .attrs = it87_attributes_autopwm[2] },
+};
+
static struct attribute *it87_attributes_fan_beep[] = {
&sensor_dev_attr_fan1_beep.dev_attr.attr,
&sensor_dev_attr_fan2_beep.dev_attr.attr,
@@ -1382,6 +1538,9 @@ static void it87_remove_files(struct device *dev)
if (sio_data->skip_pwm & (1 << 0))
continue;
sysfs_remove_group(&dev->kobj, &it87_group_pwm[i]);
+ if (has_old_autopwm(data))
+ sysfs_remove_group(&dev->kobj,
+ &it87_group_autopwm[i]);
}
if (!sio_data->skip_vid)
sysfs_remove_group(&dev->kobj, &it87_group_vid);
@@ -1491,6 +1650,13 @@ static int __devinit it87_probe(struct platform_device *pdev)
&it87_group_pwm[i]);
if (err)
goto ERROR4;
+
+ if (!has_old_autopwm(data))
+ continue;
+ err = sysfs_create_group(&dev->kobj,
+ &it87_group_autopwm[i]);
+ if (err)
+ goto ERROR4;
}
}
@@ -1624,6 +1790,7 @@ static void __devinit it87_init_device(struct platform_device *pdev)
for (i = 0; i < 3; i++) {
data->pwm_temp_map[i] = i;
data->pwm_duty[i] = 0x7f; /* Full speed */
+ data->auto_pwm[i][3] = 0x7f; /* Full speed, hard-coded */
}
/* Some chips seem to have default value 0xff for all limit
@@ -1703,6 +1870,17 @@ static void it87_update_pwm_ctrl(struct it87_data *data, int nr)
data->pwm_temp_map[nr] = data->pwm_ctrl[nr] & 0x03;
else /* Manual mode */
data->pwm_duty[nr] = data->pwm_ctrl[nr] & 0x7f;
+
+ if (has_old_autopwm(data)) {
+ int i;
+
+ for (i = 0; i < 5 ; i++)
+ data->auto_temp[nr][i] = it87_read_value(data,
+ IT87_REG_AUTO_TEMP(nr, i));
+ for (i = 0; i < 3 ; i++)
+ data->auto_pwm[nr][i] = it87_read_value(data,
+ IT87_REG_AUTO_PWM(nr, i));
+ }
}
static struct it87_data *it87_update_device(struct device *dev)