summaryrefslogtreecommitdiffstats
path: root/drivers/macintosh
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/macintosh')
-rw-r--r--drivers/macintosh/therm_adt746x.c13
1 files changed, 11 insertions, 2 deletions
diff --git a/drivers/macintosh/therm_adt746x.c b/drivers/macintosh/therm_adt746x.c
index 95b676a19be7..5ff47ba7f2d0 100644
--- a/drivers/macintosh/therm_adt746x.c
+++ b/drivers/macintosh/therm_adt746x.c
@@ -79,6 +79,7 @@ struct thermostat {
u8 limits[3];
int last_speed[2];
int last_var[2];
+ int pwm_inv[2];
};
static enum {ADT7460, ADT7467} therm_type;
@@ -229,19 +230,23 @@ static void write_fan_speed(struct thermostat *th, int speed, int fan)
if (speed >= 0) {
manual = read_reg(th, MANUAL_MODE[fan]);
+ manual &= ~INVERT_MASK;
write_reg(th, MANUAL_MODE[fan],
- (manual|MANUAL_MASK) & (~INVERT_MASK));
+ manual | MANUAL_MASK | th->pwm_inv[fan]);
write_reg(th, FAN_SPD_SET[fan], speed);
} else {
/* back to automatic */
if(therm_type == ADT7460) {
manual = read_reg(th,
MANUAL_MODE[fan]) & (~MANUAL_MASK);
-
+ manual &= ~INVERT_MASK;
+ manual |= th->pwm_inv[fan];
write_reg(th,
MANUAL_MODE[fan], manual|REM_CONTROL[fan]);
} else {
manual = read_reg(th, MANUAL_MODE[fan]);
+ manual &= ~INVERT_MASK;
+ manual |= th->pwm_inv[fan];
write_reg(th, MANUAL_MODE[fan], manual&(~AUTO_MASK));
}
}
@@ -418,6 +423,10 @@ static int probe_thermostat(struct i2c_client *client,
thermostat = th;
+ /* record invert bit status because fw can corrupt it after suspend */
+ th->pwm_inv[0] = read_reg(th, MANUAL_MODE[0]) & INVERT_MASK;
+ th->pwm_inv[1] = read_reg(th, MANUAL_MODE[1]) & INVERT_MASK;
+
/* be sure to really write fan speed the first time */
th->last_speed[0] = -2;
th->last_speed[1] = -2;