diff options
| author | Hans de Goede <hdegoede@redhat.com> | 2011-03-09 20:57:09 +0100 |
|---|---|---|
| committer | Guenter Roeck <guenter.roeck@ericsson.com> | 2011-03-14 22:39:21 -0700 |
| commit | 98f7ba197f9ef366856b5cc9ef4f46e852f3d1c8 (patch) | |
| tree | 1452ce9e6920e78c1d260e2c0b9087e25b3ba050 /drivers/hwmon/f71882fg.c | |
| parent | 44c4dc521e99c0b2946973090b27c9bd4eb81b63 (diff) | |
hwmon/f71882fg: Only allow negative auto point temps if fan_neg_temp is enabled
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
Diffstat (limited to 'drivers/hwmon/f71882fg.c')
| -rw-r--r-- | drivers/hwmon/f71882fg.c | 18 |
1 files changed, 16 insertions, 2 deletions
diff --git a/drivers/hwmon/f71882fg.c b/drivers/hwmon/f71882fg.c index 6c3de065e04..67ac8587059 100644 --- a/drivers/hwmon/f71882fg.c +++ b/drivers/hwmon/f71882fg.c @@ -84,6 +84,9 @@ #define F71882FG_REG_FAN_HYST(nr) (0x98 + (nr)) +#define F71882FG_REG_FAN_FAULT_T 0x9F +#define F71882FG_FAN_NEG_TEMP_EN 0x20 + #define F71882FG_REG_POINT_PWM(pwm, point) (0xAA + (point) + (16 * (pwm))) #define F71882FG_REG_POINT_TEMP(pwm, point) (0xA6 + (point) + (16 * (pwm))) #define F71882FG_REG_POINT_MAPPING(nr) (0xAF + 16 * (nr)) @@ -127,6 +130,7 @@ struct f71882fg_data { struct mutex update_lock; int temp_start; /* temp numbering start (0 or 1) */ char valid; /* !=0 if following fields are valid */ + char auto_point_temp_signed; unsigned long last_updated; /* In jiffies */ unsigned long last_limits; /* In jiffies */ @@ -1853,7 +1857,7 @@ static ssize_t store_pwm_auto_point_temp(struct device *dev, val /= 1000; - if (data->type == f71889fg) + if (data->auto_point_temp_signed) val = SENSORS_LIMIT(val, -128, 127); else val = SENSORS_LIMIT(val, 0, 127); @@ -1900,7 +1904,7 @@ static int __devinit f71882fg_probe(struct platform_device *pdev) struct f71882fg_data *data; struct f71882fg_sio_data *sio_data = pdev->dev.platform_data; int err, i, nr_fans = (sio_data->type == f71882fg) ? 4 : 3; - u8 start_reg; + u8 start_reg, reg; data = kzalloc(sizeof(struct f71882fg_data), GFP_KERNEL); if (!data) @@ -1970,6 +1974,16 @@ static int __devinit f71882fg_probe(struct platform_device *pdev) } if (start_reg & 0x02) { + switch (data->type) { + case f71889fg: + reg = f71882fg_read8(data, F71882FG_REG_FAN_FAULT_T); + if (reg & F71882FG_FAN_NEG_TEMP_EN) + data->auto_point_temp_signed = 1; + break; + default: + break; + } + data->pwm_enable = f71882fg_read8(data, F71882FG_REG_PWM_ENABLE); |