diff options
Diffstat (limited to 'drivers/hwmon')
| -rw-r--r-- | drivers/hwmon/w83627ehf.c | 120 |
1 files changed, 67 insertions, 53 deletions
diff --git a/drivers/hwmon/w83627ehf.c b/drivers/hwmon/w83627ehf.c index c77a4b92ebc9..f5fec1cd1d4e 100644 --- a/drivers/hwmon/w83627ehf.c +++ b/drivers/hwmon/w83627ehf.c @@ -1844,13 +1844,78 @@ static void w82627ehf_swap_tempreg(struct w83627ehf_data *data, data->reg_temp_config[r2] = tmp; } +static void __devinit +w83627ehf_check_fan_inputs(const struct w83627ehf_sio_data *sio_data, + struct w83627ehf_data *data) +{ + int fan3pin, fan4pin, fan4min, fan5pin, regval; + + superio_enter(sio_data->sioreg); + + /* fan4 and fan5 share some pins with the GPIO and serial flash */ + if (sio_data->kind == nct6775) { + /* On NCT6775, fan4 shares pins with the fdc interface */ + fan3pin = 1; + fan4pin = !(superio_inb(sio_data->sioreg, 0x2A) & 0x80); + 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); + fan4min = fan4pin; + } else if (sio_data->kind == w83667hg || sio_data->kind == w83667hg_b) { + fan3pin = 1; + fan4pin = superio_inb(sio_data->sioreg, 0x27) & 0x40; + fan5pin = superio_inb(sio_data->sioreg, 0x27) & 0x20; + fan4min = fan4pin; + } else { + fan3pin = 1; + fan4pin = !(superio_inb(sio_data->sioreg, 0x29) & 0x06); + fan5pin = !(superio_inb(sio_data->sioreg, 0x24) & 0x02); + fan4min = fan4pin; + } + + superio_exit(sio_data->sioreg); + + data->has_fan = data->has_fan_min = 0x03; /* fan1 and fan2 */ + data->has_fan |= (fan3pin << 2); + data->has_fan_min |= (fan3pin << 2); + + if (sio_data->kind == nct6775 || sio_data->kind == nct6776) { + /* + * NCT6775F and NCT6776F don't have the W83627EHF_REG_FANDIV1 + * register + */ + data->has_fan |= (fan4pin << 3) | (fan5pin << 4); + data->has_fan_min |= (fan4min << 3) | (fan5pin << 4); + } else { + /* + * It looks like fan4 and fan5 pins can be alternatively used + * as fan on/off switches, but fan5 control is write only :/ + * We assume that if the serial interface is disabled, designers + * connected fan5 as input unless they are emitting log 1, which + * is not the default. + */ + regval = w83627ehf_read_value(data, W83627EHF_REG_FANDIV1); + if ((regval & (1 << 2)) && fan4pin) { + data->has_fan |= (1 << 3); + data->has_fan_min |= (1 << 3); + } + if (!(regval & (1 << 1)) && fan5pin) { + data->has_fan |= (1 << 4); + data->has_fan_min |= (1 << 4); + } + } +} + static int __devinit w83627ehf_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; struct w83627ehf_sio_data *sio_data = dev->platform_data; struct w83627ehf_data *data; struct resource *res; - u8 fan3pin, fan4pin, fan4min, fan5pin, en_vrm10; + u8 en_vrm10; int i, err = 0; res = platform_get_resource(pdev, IORESOURCE_IO, 0); @@ -2135,30 +2200,6 @@ static int __devinit w83627ehf_probe(struct platform_device *pdev) } } - /* fan4 and fan5 share some pins with the GPIO and serial flash */ - if (sio_data->kind == nct6775) { - /* On NCT6775, fan4 shares pins with the fdc interface */ - fan3pin = 1; - fan4pin = !(superio_inb(sio_data->sioreg, 0x2A) & 0x80); - 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); - fan4min = fan4pin; - } else if (sio_data->kind == w83667hg || sio_data->kind == w83667hg_b) { - fan3pin = 1; - fan4pin = superio_inb(sio_data->sioreg, 0x27) & 0x40; - fan5pin = superio_inb(sio_data->sioreg, 0x27) & 0x20; - fan4min = fan4pin; - } else { - fan3pin = 1; - fan4pin = !(superio_inb(sio_data->sioreg, 0x29) & 0x06); - fan5pin = !(superio_inb(sio_data->sioreg, 0x24) & 0x02); - fan4min = fan4pin; - } - if (fan_debounce && (sio_data->kind == nct6775 || sio_data->kind == nct6776)) { u8 tmp; @@ -2176,34 +2217,7 @@ static int __devinit w83627ehf_probe(struct platform_device *pdev) superio_exit(sio_data->sioreg); - /* It looks like fan4 and fan5 pins can be alternatively used - as fan on/off switches, but fan5 control is write only :/ - We assume that if the serial interface is disabled, designers - connected fan5 as input unless they are emitting log 1, which - is not the default. */ - - data->has_fan = data->has_fan_min = 0x03; /* fan1 and fan2 */ - - data->has_fan |= (fan3pin << 2); - data->has_fan_min |= (fan3pin << 2); - - /* - * NCT6775F and NCT6776F don't have the W83627EHF_REG_FANDIV1 register - */ - if (sio_data->kind == nct6775 || sio_data->kind == nct6776) { - data->has_fan |= (fan4pin << 3) | (fan5pin << 4); - data->has_fan_min |= (fan4min << 3) | (fan5pin << 4); - } else { - i = w83627ehf_read_value(data, W83627EHF_REG_FANDIV1); - if ((i & (1 << 2)) && fan4pin) { - data->has_fan |= (1 << 3); - data->has_fan_min |= (1 << 3); - } - if (!(i & (1 << 1)) && fan5pin) { - data->has_fan |= (1 << 4); - data->has_fan_min |= (1 << 4); - } - } + w83627ehf_check_fan_inputs(sio_data, data); /* Read fan clock dividers immediately */ w83627ehf_update_fan_div_common(dev, data); |
