static void slots_fan_tick(void)
{
s32 power;
int speed;
int err;
if (!slots_fan || !slots_power)
return;
if (!slots_started) {
/* first time; initialize things */
;
wf_pid_init(&slots_pid, &slots_param);
slots_started = 1;
}
err = slots_power->ops->get_value(slots_power, &power);
if (err) {
// printk(KERN_WARNING "windfarm: slots power sensor error %d\n",
;
failure_state |= FAILURE_SENSOR;
wf_control_set_max(slots_fan);
return;
}
speed = wf_pid_run(&slots_pid, power);
DBG_LOTS("slots PID power=%d.%.3d speed=%d\n",
FIX32TOPRINT(power), speed);
err = slots_fan->ops->set_value(slots_fan, speed);
if (err) {
;
failure_state |= FAILURE_FAN;
}
}
static void backside_setup_pid(void)
{
/* first time initialize things */
s32 fmin = wf_control_get_min(backside_fan);
s32 fmax = wf_control_get_max(backside_fan);
struct wf_pid_param param;
struct device_node *u3;
int u3h = 1; /* conservative by default */
u3 = of_find_node_by_path("/u3@0,f8000000");
if (u3 != NULL) {
const u32 *vers = of_get_property(u3, "device-rev", NULL);
if (vers)
if (((*vers) & 0x3f) < 0x34)
u3h = 0;
of_node_put(u3);
}
param = u3h ? backside_u3h_param : backside_u3_param;
param.min = max(param.min, fmin);
param.max = min(param.max, fmax);
wf_pid_init(&backside_pid, ¶m);
backside_tick = 1;
pr_info("wf_pm72: Backside control loop started.\n");
}
static void backside_setup_pid(void)
{
/* first time initialize things */
s32 fmin = wf_control_get_min(backside_fan);
s32 fmax = wf_control_get_max(backside_fan);
struct wf_pid_param param;
param = backside_param;
param.min = max(param.min, fmin);
param.max = min(param.max, fmax);
wf_pid_init(&backside_pid, ¶m);
param = dimms_param;
wf_pid_init(&dimms_pid, ¶m);
backside_tick = 1;
pr_info("wf_rm31: Backside control loop started.\n");
}
static void slots_setup_pid(void)
{
/* first time initialize things */
s32 fmin = wf_control_get_min(slots_fan);
s32 fmax = wf_control_get_max(slots_fan);
struct wf_pid_param param = slots_param;
param.min = max(param.min, fmin);
param.max = min(param.max, fmax);
wf_pid_init(&slots_pid, ¶m);
slots_tick = 1;
pr_info("wf_rm31: Slots control loop started.\n");
}
static void drives_setup_pid(void)
{
/* first time initialize things */
s32 fmin = wf_control_get_min(drives_fan);
s32 fmax = wf_control_get_max(drives_fan);
struct wf_pid_param param = drives_param;
param.min = max(param.min, fmin);
param.max = min(param.max, fmax);
wf_pid_init(&drives_pid, ¶m);
drives_tick = 1;
pr_info("wf_pm72: Drive bay control loop started.\n");
}
static void drive_bay_fan_tick(void)
{
s32 temp;
int speed;
int err;
if (!drive_bay_fan || !hd_temp)
return;
if (!drive_bay_tick) {
/* first time; initialize things */
;
drive_bay_prm.min = drive_bay_fan->ops->get_min(drive_bay_fan);
drive_bay_prm.max = drive_bay_fan->ops->get_max(drive_bay_fan);
wf_pid_init(&drive_bay_pid, &drive_bay_prm);
drive_bay_tick = 1;
}
if (--drive_bay_tick > 0)
return;
drive_bay_tick = drive_bay_pid.param.interval;
err = hd_temp->ops->get_value(hd_temp, &temp);
if (err) {
// printk(KERN_WARNING "windfarm: drive bay temp sensor "
;
failure_state |= FAILURE_SENSOR;
wf_control_set_max(drive_bay_fan);
return;
}
speed = wf_pid_run(&drive_bay_pid, temp);
DBG_LOTS("drive_bay PID temp=%d.%.3d speed=%d\n",
FIX32TOPRINT(temp), speed);
err = drive_bay_fan->ops->set_value(drive_bay_fan, speed);
if (err) {
;
failure_state |= FAILURE_FAN;
}
}
static void backside_fan_tick(void)
{
s32 temp;
int speed;
int err;
if (!backside_fan || !u4_temp)
return;
if (!backside_tick) {
/* first time; initialize things */
;
backside_param.min = backside_fan->ops->get_min(backside_fan);
backside_param.max = backside_fan->ops->get_max(backside_fan);
wf_pid_init(&backside_pid, &backside_param);
backside_tick = 1;
}
if (--backside_tick > 0)
return;
backside_tick = backside_pid.param.interval;
err = u4_temp->ops->get_value(u4_temp, &temp);
if (err) {
// printk(KERN_WARNING "windfarm: U4 temp sensor error %d\n",
;
failure_state |= FAILURE_SENSOR;
wf_control_set_max(backside_fan);
return;
}
speed = wf_pid_run(&backside_pid, temp);
DBG_LOTS("backside PID temp=%d.%.3d speed=%d\n",
FIX32TOPRINT(temp), speed);
err = backside_fan->ops->set_value(backside_fan, speed);
if (err) {
;
failure_state |= FAILURE_FAN;
}
}
static void wf_smu_create_slots_fans(void)
{
struct wf_pid_param param = {
.interval = 1,
.history_len = 8,
.gd = 0x00000000,
.gp = 0x00000000,
.gr = 0x00020000,
.itarget = 0x00000000
};
/* Alloc & initialize state */
wf_smu_slots_fans = kmalloc(sizeof(struct wf_smu_slots_fans_state),
GFP_KERNEL);
if (wf_smu_slots_fans == NULL) {
printk(KERN_WARNING "windfarm: Memory allocation error"
" max fan speed\n");
goto fail;
}
wf_smu_slots_fans->ticks = 1;
/* Fill PID params */
param.additive = (fan_slots->type == WF_CONTROL_RPM_FAN);
param.min = fan_slots->ops->get_min(fan_slots);
param.max = fan_slots->ops->get_max(fan_slots);
wf_pid_init(&wf_smu_slots_fans->pid, ¶m);
DBG("wf: Slots Fan control initialized.\n");
DBG(" itarged=%d.%03d, min=%d RPM, max=%d RPM\n",
FIX32TOPRINT(param.itarget), param.min, param.max);
return;
fail:
if (fan_slots)
wf_control_set_max(fan_slots);
}
static void wf_smu_slots_fans_tick(struct wf_smu_slots_fans_state *st)
{
s32 new_setpoint, power;
int rc;
if (--st->ticks != 0) {
if (wf_smu_readjust)
goto readjust;
return;
}
st->ticks = st->pid.param.interval;
rc = sensor_slots_power->ops->get_value(sensor_slots_power, &power);
if (rc) {
printk(KERN_WARNING "windfarm: Slots power sensor error %d\n",
rc);
wf_smu_failure_state |= FAILURE_SENSOR;
return;
}
DBG("wf_smu: Slots Fans tick ! Slots power: %d.%03d\n",
FIX32TOPRINT(power));
#if 0 /* Check what makes a good overtemp condition */
if (power > (st->pid.param.itarget + 0x50000))
wf_smu_failure_state |= FAILURE_OVERTEMP;
#endif
new_setpoint = wf_pid_run(&st->pid, power);
DBG("wf_smu: new_setpoint: %d\n", (int)new_setpoint);
if (st->setpoint == new_setpoint)
return;
st->setpoint = new_setpoint;
readjust:
if (fan_slots && wf_smu_failure_state == 0) {
rc = fan_slots->ops->set_value(fan_slots, st->setpoint);
if (rc) {
printk(KERN_WARNING "windfarm: Slots fan error %d\n",
rc);
wf_smu_failure_state |= FAILURE_FAN;
}
}
}
static void wf_smu_create_drive_fans(void)
{
struct wf_pid_param param = {
.interval = 5,
.history_len = 2,
.gd = 0x01e00000,
.gp = 0x00500000,
.gr = 0x00000000,
.itarget = 0x00200000,
};
/* Alloc & initialize state */
wf_smu_drive_fans = kmalloc(sizeof(struct wf_smu_drive_fans_state),
GFP_KERNEL);
if (wf_smu_drive_fans == NULL) {
printk(KERN_WARNING "windfarm: Memory allocation error"
" max fan speed\n");
goto fail;
}
wf_smu_drive_fans->ticks = 1;
/* Fill PID params */
param.additive = (fan_hd->type == WF_CONTROL_RPM_FAN);
param.min = fan_hd->ops->get_min(fan_hd);
param.max = fan_hd->ops->get_max(fan_hd);
wf_pid_init(&wf_smu_drive_fans->pid, ¶m);
DBG("wf: Drive Fan control initialized.\n");
DBG(" itarged=%d.%03d, min=%d RPM, max=%d RPM\n",
FIX32TOPRINT(param.itarget), param.min, param.max);
return;
fail:
if (fan_hd)
wf_control_set_max(fan_hd);
}
static void wf_smu_drive_fans_tick(struct wf_smu_drive_fans_state *st)
{
s32 new_setpoint, temp;
int rc;
if (--st->ticks != 0) {
if (wf_smu_readjust)
goto readjust;
return;
}
st->ticks = st->pid.param.interval;
rc = sensor_hd_temp->ops->get_value(sensor_hd_temp, &temp);
if (rc) {
printk(KERN_WARNING "windfarm: HD temp sensor error %d\n",
rc);
wf_smu_failure_state |= FAILURE_SENSOR;
return;
}
DBG("wf_smu: Drive Fans tick ! HD temp: %d.%03d\n",
FIX32TOPRINT(temp));
if (temp > (st->pid.param.itarget + 0x50000))
wf_smu_failure_state |= FAILURE_OVERTEMP;
new_setpoint = wf_pid_run(&st->pid, temp);
DBG("wf_smu: new_setpoint: %d\n", (int)new_setpoint);
if (st->setpoint == new_setpoint)
return;
st->setpoint = new_setpoint;
readjust:
if (fan_hd && wf_smu_failure_state == 0) {
rc = fan_hd->ops->set_value(fan_hd, st->setpoint);
if (rc) {
printk(KERN_WARNING "windfarm: HD fan error %d\n",
rc);
wf_smu_failure_state |= FAILURE_FAN;
}
}
}
