int
nouveau_therm_fan_ctor(struct nouveau_therm *therm)
{
struct nouveau_therm_priv *priv = (void *)therm;
struct nouveau_gpio *gpio = nouveau_gpio(therm);
struct nouveau_bios *bios = nouveau_bios(therm);
struct dcb_gpio_func func;
int ret;
/* attempt to locate a drivable fan, and determine control method */
ret = gpio->find(gpio, 0, DCB_GPIO_FAN, 0xff, &func);
if (ret == 0) {
/* FIXME: is this really the place to perform such checks ? */
if (func.line != 16 && func.log[0] & DCB_GPIO_LOG_DIR_IN) {
nv_debug(therm, "GPIO_FAN is in input mode\n");
ret = -EINVAL;
} else {
ret = nouveau_fanpwm_create(therm, &func);
if (ret != 0)
ret = nouveau_fantog_create(therm, &func);
}
}
/* no controllable fan found, create a dummy fan module */
if (ret != 0) {
ret = nouveau_fannil_create(therm);
if (ret)
return ret;
}
nv_info(therm, "FAN control: %s\n", priv->fan->type);
/* read the current speed, it is useful when resuming */
priv->fan->percent = nouveau_therm_fan_get(therm);
/* attempt to detect a tachometer connection */
ret = gpio->find(gpio, 0, DCB_GPIO_FAN_SENSE, 0xff, &priv->fan->tach);
if (ret)
priv->fan->tach.func = DCB_GPIO_UNUSED;
/* initialise fan bump/slow update handling */
priv->fan->parent = therm;
nouveau_alarm_init(&priv->fan->alarm, nouveau_fan_alarm);
spin_lock_init(&priv->fan->lock);
/* other random init... */
nouveau_therm_fan_set_defaults(therm);
nvbios_perf_fan_parse(bios, &priv->fan->perf);
if (!nvbios_fan_parse(bios, &priv->fan->bios)) {
nv_debug(therm, "parsing the fan table failed\n");
if (nvbios_therm_fan_parse(bios, &priv->fan->bios))
nv_error(therm, "parsing both fan tables failed\n");
}
nouveau_therm_fan_safety_checks(therm);
return 0;
}
static void
nouveau_therm_update(struct nouveau_therm *therm, int mode)
{
struct nouveau_timer *ptimer = nouveau_timer(therm);
struct nouveau_therm_priv *priv = (void *)therm;
unsigned long flags;
bool immd = true;
bool poll = true;
int duty = -1;
spin_lock_irqsave(&priv->lock, flags);
if (mode < 0)
mode = priv->mode;
priv->mode = mode;
switch (mode) {
case NOUVEAU_THERM_CTRL_MANUAL:
ptimer->alarm_cancel(ptimer, &priv->alarm);
duty = nouveau_therm_fan_get(therm);
if (duty < 0)
duty = 100;
poll = false;
break;
case NOUVEAU_THERM_CTRL_AUTO:
switch(priv->fan->bios.fan_mode) {
case NVBIOS_THERM_FAN_TRIP:
duty = nouveau_therm_update_trip(therm);
break;
case NVBIOS_THERM_FAN_LINEAR:
duty = nouveau_therm_update_linear(therm);
break;
case NVBIOS_THERM_FAN_OTHER:
if (priv->cstate)
duty = priv->cstate;
poll = false;
break;
}
immd = false;
break;
case NOUVEAU_THERM_CTRL_NONE:
default:
ptimer->alarm_cancel(ptimer, &priv->alarm);
poll = false;
}
if (list_empty(&priv->alarm.head) && poll)
ptimer->alarm(ptimer, 1000000000ULL, &priv->alarm);
spin_unlock_irqrestore(&priv->lock, flags);
if (duty >= 0) {
nv_debug(therm, "FAN target request: %d%%\n", duty);
nouveau_therm_fan_set(therm, immd, duty);
}
}
static void
nouveau_therm_update(struct nouveau_therm *therm, int mode)
{
struct nouveau_timer *ptimer = nouveau_timer(therm);
struct nouveau_therm_priv *priv = (void *)therm;
unsigned long flags;
int duty;
spin_lock_irqsave(&priv->lock, flags);
nv_debug(therm, "FAN speed check\n");
if (mode < 0)
mode = priv->mode;
priv->mode = mode;
switch (mode) {
case NOUVEAU_THERM_CTRL_MANUAL:
ptimer->alarm_cancel(ptimer, &priv->alarm);
duty = nouveau_therm_fan_get(therm);
if (duty < 0)
duty = 100;
break;
case NOUVEAU_THERM_CTRL_AUTO:
if (priv->fan->bios.nr_fan_trip)
duty = nouveau_therm_update_trip(therm);
else
duty = nouveau_therm_update_linear(therm);
break;
case NOUVEAU_THERM_CTRL_NONE:
default:
ptimer->alarm_cancel(ptimer, &priv->alarm);
goto done;
}
nv_debug(therm, "FAN target request: %d%%\n", duty);
nouveau_therm_fan_set(therm, (mode != NOUVEAU_THERM_CTRL_AUTO), duty);
done:
if (list_empty(&priv->alarm.head) && (mode == NOUVEAU_THERM_CTRL_AUTO))
ptimer->alarm(ptimer, 1000000000ULL, &priv->alarm);
else if (!list_empty(&priv->alarm.head))
nv_debug(therm, "therm fan alarm list is not empty\n");
spin_unlock_irqrestore(&priv->lock, flags);
}
int
nouveau_therm_fan_user_get(struct nouveau_therm *therm)
{
return nouveau_therm_fan_get(therm);
}
