From: Guenter Roeck <linux@xxxxxxxxxxxx>
On IT8782F, temp3 is only supported if UART6 is disabled.
Signed-off-by: Guenter Roeck <linux@xxxxxxxxxxxx>
---
v4: Review feedback
v3: Resolve conflicts with previous patches.
Only remove temp sysfs attributes if the to-be-removed sensor exists,
to be in sync with the other attribute removal code.
v2: Drop condition for IT8783F. On that chip, UART6 may be routed via JP4 to
a different set of pins, so we can not reliably detect if temp3 and RI6
overlap or not.
drivers/hwmon/it87.c | 81 +++++++++++++++++++++++++++++++++++++------------
1 files changed, 61 insertions(+), 20 deletions(-)
diff --git a/drivers/hwmon/it87.c b/drivers/hwmon/it87.c
index 5f65fef..579a02a 100644
--- a/drivers/hwmon/it87.c
+++ b/drivers/hwmon/it87.c
@@ -218,6 +218,7 @@ static const u8 IT87_REG_FANX_MIN[] = { 0x1b, 0x1c, 0x1d, 0x85, 0x87 };
#define IT87_REG_VIN_ENABLE 0x50
#define IT87_REG_TEMP_ENABLE 0x51
+#define IT87_REG_TEMP_EXTRA 0x55
#define IT87_REG_BEEP_ENABLE 0x5c
#define IT87_REG_CHIPID 0x58
@@ -238,6 +239,7 @@ struct it87_sio_data {
u8 skip_vid;
u8 skip_fan;
u8 skip_pwm;
+ u8 skip_temp;
};
/*
@@ -262,6 +264,7 @@ struct it87_data {
u8 has_fan; /* Bitfield, fans enabled */
u16 fan[5]; /* Register values, possibly combined */
u16 fan_min[5]; /* Register values, possibly combined */
+ u8 has_temp; /* Bitfield, temp sensors enabled */
s8 temp[3]; /* Register value */
s8 temp_high[3]; /* Register value */
s8 temp_low[3]; /* Register value */
@@ -1438,23 +1441,37 @@ static const struct attribute_group it87_group_in[9] = {
{ .attrs = it87_attributes_in[8] },
};
-static struct attribute *it87_attributes[] = {
+static struct attribute *it87_attributes_temp[3][6] = {
+{
&sensor_dev_attr_temp1_input.dev_attr.attr,
- &sensor_dev_attr_temp2_input.dev_attr.attr,
- &sensor_dev_attr_temp3_input.dev_attr.attr,
&sensor_dev_attr_temp1_max.dev_attr.attr,
- &sensor_dev_attr_temp2_max.dev_attr.attr,
- &sensor_dev_attr_temp3_max.dev_attr.attr,
&sensor_dev_attr_temp1_min.dev_attr.attr,
- &sensor_dev_attr_temp2_min.dev_attr.attr,
- &sensor_dev_attr_temp3_min.dev_attr.attr,
&sensor_dev_attr_temp1_type.dev_attr.attr,
- &sensor_dev_attr_temp2_type.dev_attr.attr,
- &sensor_dev_attr_temp3_type.dev_attr.attr,
&sensor_dev_attr_temp1_alarm.dev_attr.attr,
+ NULL
+} , {
+ &sensor_dev_attr_temp2_input.dev_attr.attr,
+ &sensor_dev_attr_temp2_max.dev_attr.attr,
+ &sensor_dev_attr_temp2_min.dev_attr.attr,
+ &sensor_dev_attr_temp2_type.dev_attr.attr,
&sensor_dev_attr_temp2_alarm.dev_attr.attr,
+ NULL
+} , {
+ &sensor_dev_attr_temp3_input.dev_attr.attr,
+ &sensor_dev_attr_temp3_max.dev_attr.attr,
+ &sensor_dev_attr_temp3_min.dev_attr.attr,
+ &sensor_dev_attr_temp3_type.dev_attr.attr,
&sensor_dev_attr_temp3_alarm.dev_attr.attr,
+ NULL
+} };
+
+static const struct attribute_group it87_group_temp[3] = {
+ { .attrs = it87_attributes_temp[0] },
+ { .attrs = it87_attributes_temp[1] },
+ { .attrs = it87_attributes_temp[2] },
+};
+static struct attribute *it87_attributes[] = {
&dev_attr_alarms.attr,
&sensor_dev_attr_intrusion0_alarm.dev_attr.attr,
&dev_attr_name.attr,
@@ -1477,15 +1494,10 @@ static struct attribute *it87_attributes_in_beep[] = {
NULL
};
-static struct attribute *it87_attributes_beep[] = {
+static struct attribute *it87_attributes_temp_beep[] = {
&sensor_dev_attr_temp1_beep.dev_attr.attr,
&sensor_dev_attr_temp2_beep.dev_attr.attr,
&sensor_dev_attr_temp3_beep.dev_attr.attr,
- NULL
-};
-
-static const struct attribute_group it87_group_beep = {
- .attrs = it87_attributes_beep,
};
static struct attribute *it87_attributes_fan16[5][3+1] = { {
@@ -1873,9 +1885,15 @@ static int __init it87_find(unsigned short *address,
* On IT8782F, UART6 pins overlap with VIN5, VIN6, and VIN7.
* While VIN7 can be routed to the internal voltage divider,
* VIN5 and VIN6 are not available if UART6 is enabled.
+ *
+ * Also, temp3 is not available if UART6 is enabled and TEMPIN3
+ * is the temperature source. Since we can not read the
+ * temperature source here, skip_temp is preliminary.
*/
- if (uart6)
+ if (uart6) {
sio_data->skip_in |= (1 << 5) | (1 << 6);
+ sio_data->skip_temp |= (1 << 2);
+ }
sio_data->beep_pin = superio_inb(IT87_SIO_BEEP_PIN_REG) & 0x3f;
}
@@ -1922,8 +1940,14 @@ static void it87_remove_files(struct device *dev)
sysfs_remove_file(&dev->kobj,
it87_attributes_in_beep[i]);
}
- if (sio_data->beep_pin)
- sysfs_remove_group(&dev->kobj, &it87_group_beep);
+ for (i = 0; i < 3; i++) {
+ if (!(data->has_temp & (1 << i)))
+ continue;
+ sysfs_remove_group(&dev->kobj, &it87_group_temp[i]);
+ if (sio_data->beep_pin)
+ sysfs_remove_file(&dev->kobj,
+ it87_attributes_temp_beep[i]);
+ }
for (i = 0; i < 5; i++) {
if (!(data->has_fan & (1 << i)))
continue;
@@ -2012,6 +2036,13 @@ static int __devinit it87_probe(struct platform_device *pdev)
data->in_scaled |= (1 << 7); /* in7 is VCCH5V */
}
+ data->has_temp = 0x07;
+ if (sio_data->skip_temp & (1 << 2)) {
+ if (sio_data->type == it8782
+ && !(it87_read_value(data, IT87_REG_TEMP_EXTRA) & 0x80))
+ data->has_temp &= ~(1 << 2);
+ }
+
/* Initialize the IT87 chip */
it87_init_device(pdev);
@@ -2034,10 +2065,18 @@ static int __devinit it87_probe(struct platform_device *pdev)
}
}
- if (sio_data->beep_pin) {
- err = sysfs_create_group(&dev->kobj, &it87_group_beep);
+ for (i = 0; i < 3; i++) {
+ if (!(data->has_temp & (1 << i)))
+ continue;
+ err = sysfs_create_group(&dev->kobj, &it87_group_temp[i]);
if (err)
goto ERROR4;
+ if (sio_data->beep_pin) {
+ err = sysfs_create_file(&dev->kobj,
+ it87_attributes_temp_beep[i]);
+ if (err)
+ goto ERROR4;
+ }
}
/* Do not create fan files for disabled fans */
@@ -2381,6 +2420,8 @@ static struct it87_data *it87_update_device(struct device *dev)
}
}
for (i = 0; i < 3; i++) {
+ if (!(data->has_temp & (1 << i)))
+ continue;
data->temp[i] =
it87_read_value(data, IT87_REG_TEMP(i));
data->temp_high[i] =
--
1.7.9.48.g85da4d
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