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hwmon: (w83627ehf) Fix number of fans for NCT6776F 

NCT6776F can select fan input pins for fans 3 to 5 with a secondary set of
chip register bits. Check that second set of bits in addition to the first set
to detect if fans 3..5 are monitored.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Cc: stable@vger.kernel.org # 3.0+
Acked-by: Jean Delvare <khali@linux-fr.org>
This commit is contained in:
Guenter Roeck 2012-01-27 05:43:59 -08:00 committed by Guenter Roeck
parent 62aa2b537c
commit 585c0fd821
1 changed files with 20 additions and 3 deletions
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23
drivers/hwmon/w83627ehf.c
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@ -1920,9 +1920,26 @@ w83627ehf_check_fan_inputs(const struct w83627ehf_sio_data *sio_data,
fan4min = 0;
fan5pin = 0;
} else if (sio_data->kind == nct6776) {
fan3pin = !(superio_inb(sio_data->sioreg, 0x24) & 0x40);
fan4pin = !!(superio_inb(sio_data->sioreg, 0x1C) & 0x01);
fan5pin = !!(superio_inb(sio_data->sioreg, 0x1C) & 0x02);
bool gpok = superio_inb(sio_data->sioreg, 0x27) & 0x80;
superio_select(sio_data->sioreg, W83627EHF_LD_HWM);
regval = superio_inb(sio_data->sioreg, SIO_REG_ENABLE);
if (regval & 0x80)
fan3pin = gpok;
else
fan3pin = !(superio_inb(sio_data->sioreg, 0x24) & 0x40);
if (regval & 0x40)
fan4pin = gpok;
else
fan4pin = !!(superio_inb(sio_data->sioreg, 0x1C) & 0x01);
if (regval & 0x20)
fan5pin = gpok;
else
fan5pin = !!(superio_inb(sio_data->sioreg, 0x1C) & 0x02);
fan4min = fan4pin;
} else if (sio_data->kind == w83667hg || sio_data->kind == w83667hg_b) {
fan3pin = 1;