module_param(force_id, ushort, 0);
MODULE_PARM_DESC(force_id, "Override the detected device ID");
+static unsigned short fan_debounce;
+module_param(fan_debounce, ushort, 0);
+MODULE_PARM_DESC(fan_debounce, "Enable debouncing for fan RPM signal");
+
#define DRVNAME "w83627ehf"
/*
/* NCT6775F has its own fan divider registers */
#define NCT6775_REG_FANDIV1 0x506
#define NCT6775_REG_FANDIV2 0x507
+#define NCT6775_REG_FAN_DEBOUNCE 0xf0
#define W83627EHF_REG_ALARM1 0x459
#define W83627EHF_REG_ALARM2 0x45A
fan5pin = !(superio_inb(sio_data->sioreg, 0x24) & 0x02);
fan4min = fan4pin;
}
+
+ if (fan_debounce &&
+ (sio_data->kind == nct6775 || sio_data->kind == nct6776)) {
+ u8 tmp;
+
+ superio_select(sio_data->sioreg, W83627EHF_LD_HWM);
+ tmp = superio_inb(sio_data->sioreg, NCT6775_REG_FAN_DEBOUNCE);
+ if (sio_data->kind == nct6776)
+ superio_outb(sio_data->sioreg, NCT6775_REG_FAN_DEBOUNCE,
+ 0x3e | tmp);
+ else
+ superio_outb(sio_data->sioreg, NCT6775_REG_FAN_DEBOUNCE,
+ 0x1e | tmp);
+ pr_info("Enabled fan debounce for chip %s\n", data->name);
+ }
+
superio_exit(sio_data->sioreg);
/* It looks like fan4 and fan5 pins can be alternatively used