diff options
| -rw-r--r-- | Documentation/hwmon/it87 | 3 | ||||
| -rw-r--r-- | drivers/hwmon/it87.c | 20 |
2 files changed, 19 insertions, 4 deletions
diff --git a/Documentation/hwmon/it87 b/Documentation/hwmon/it87 index e1f38287fbb..8386aadc0a8 100644 --- a/Documentation/hwmon/it87 +++ b/Documentation/hwmon/it87 @@ -217,4 +217,5 @@ Temperature offset attributes The driver supports temp[1-3]_offset sysfs attributes to adjust the reported temperature for thermal diodes or diode-connected thermal transistors. If a temperature sensor is configured for thermistors, the attribute values -are ignored. +are ignored. If the thermal sensor type is Intel PECI, the temperature offset +must be programmed to the critical CPU temperature. diff --git a/drivers/hwmon/it87.c b/drivers/hwmon/it87.c index e8fdc438df0..3827aa9aa11 100644 --- a/drivers/hwmon/it87.c +++ b/drivers/hwmon/it87.c @@ -231,6 +231,7 @@ static const u8 IT87_REG_TEMP_OFFSET[] = { 0x56, 0x57, 0x59 }; struct it87_devices { const char *name; u16 features; + u16 peci_mask; }; #define FEAT_12MV_ADC (1 << 0) @@ -238,6 +239,7 @@ struct it87_devices { #define FEAT_OLD_AUTOPWM (1 << 2) #define FEAT_16BIT_FANS (1 << 3) #define FEAT_TEMP_OFFSET (1 << 4) +#define FEAT_TEMP_PECI (1 << 5) static const struct it87_devices it87_devices[] = { [it87] = { @@ -263,12 +265,14 @@ static const struct it87_devices it87_devices[] = { [it8721] = { .name = "it8721", .features = FEAT_NEWER_AUTOPWM | FEAT_12MV_ADC | FEAT_16BIT_FANS - | FEAT_TEMP_OFFSET, + | FEAT_TEMP_OFFSET | FEAT_TEMP_PECI, + .peci_mask = 0x05, }, [it8728] = { .name = "it8728", .features = FEAT_NEWER_AUTOPWM | FEAT_12MV_ADC | FEAT_16BIT_FANS - | FEAT_TEMP_OFFSET, + | FEAT_TEMP_OFFSET | FEAT_TEMP_PECI, + .peci_mask = 0x07, }, [it8782] = { .name = "it8782", @@ -285,6 +289,8 @@ static const struct it87_devices it87_devices[] = { #define has_newer_autopwm(data) ((data)->features & FEAT_NEWER_AUTOPWM) #define has_old_autopwm(data) ((data)->features & FEAT_OLD_AUTOPWM) #define has_temp_offset(data) ((data)->features & FEAT_TEMP_OFFSET) +#define has_temp_peci(data, nr) (((data)->features & FEAT_TEMP_PECI) && \ + ((data)->peci_mask & (1 << nr))) struct it87_sio_data { enum chips type; @@ -309,6 +315,7 @@ struct it87_data { struct device *hwmon_dev; enum chips type; u16 features; + u16 peci_mask; unsigned short addr; const char *name; @@ -617,6 +624,8 @@ static ssize_t show_temp_type(struct device *dev, struct device_attribute *attr, struct it87_data *data = it87_update_device(dev); u8 reg = data->sensor; /* In case value is updated while used */ + if (has_temp_peci(data, nr) && (reg >> 6 == nr + 1)) + return sprintf(buf, "6\n"); /* Intel PECI */ if (reg & (1 << nr)) return sprintf(buf, "3\n"); /* thermal diode */ if (reg & (8 << nr)) @@ -640,16 +649,20 @@ static ssize_t set_temp_type(struct device *dev, struct device_attribute *attr, reg = it87_read_value(data, IT87_REG_TEMP_ENABLE); reg &= ~(1 << nr); reg &= ~(8 << nr); + if (has_temp_peci(data, nr) && (reg >> 6 == nr + 1 || val == 6)) + reg &= 0x3f; if (val == 2) { /* backwards compatibility */ dev_warn(dev, "Sensor type 2 is deprecated, please use 4 instead\n"); val = 4; } - /* 3 = thermal diode; 4 = thermistor; 0 = disabled */ + /* 3 = thermal diode; 4 = thermistor; 6 = Intel PECI; 0 = disabled */ if (val == 3) reg |= 1 << nr; else if (val == 4) reg |= 8 << nr; + else if (has_temp_peci(data, nr) && val == 6) + reg |= (nr + 1) << 6; else if (val != 0) return -EINVAL; @@ -1966,6 +1979,7 @@ static int it87_probe(struct platform_device *pdev) data->addr = res->start; data->type = sio_data->type; data->features = it87_devices[sio_data->type].features; + data->peci_mask = it87_devices[sio_data->type].peci_mask; data->name = it87_devices[sio_data->type].name; /* * IT8705F Datasheet 0.4.1, 3h == Version G. |