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+/*
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+ * Copyright 2012 Red Hat Inc.
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+ *
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+ * Permission is hereby granted, free of charge, to any person obtaining a
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+ * copy of this software and associated documentation files (the "Software"),
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+ * to deal in the Software without restriction, including without limitation
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+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
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+ * and/or sell copies of the Software, and to permit persons to whom the
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+ * Software is furnished to do so, subject to the following conditions:
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+ *
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+ * The above copyright notice and this permission notice shall be included in
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+ * all copies or substantial portions of the Software.
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+ *
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+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
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+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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+ * OTHER DEALINGS IN THE SOFTWARE.
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+ *
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+ * Authors: Ben Skeggs
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+ * Martin Peres
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+ */
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+
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+#include "priv.h"
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+
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+struct nv84_therm_priv {
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+ struct nouveau_therm_priv base;
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+};
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+
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+int
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+nv84_temp_get(struct nouveau_therm *therm)
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+{
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+ return nv_rd32(therm, 0x20400);
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+}
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+
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+static void
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+nv84_therm_program_alarms(struct nouveau_therm *therm)
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+{
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+ struct nouveau_therm_priv *priv = (void *)therm;
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+ struct nvbios_therm_sensor *sensor = &priv->bios_sensor;
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+ unsigned long flags;
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+
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+ spin_lock_irqsave(&priv->sensor.alarm_program_lock, flags);
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+
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+ /* enable RISING and FALLING IRQs for shutdown, THRS 0, 1, 2 and 4 */
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+ nv_wr32(therm, 0x20000, 0x000003ff);
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+
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+ /* shutdown: The computer should be shutdown when reached */
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+ nv_wr32(therm, 0x20484, sensor->thrs_shutdown.hysteresis);
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+ nv_wr32(therm, 0x20480, sensor->thrs_shutdown.temp);
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+
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+ /* THRS_1 : fan boost*/
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+ nv_wr32(therm, 0x204c4, sensor->thrs_fan_boost.temp);
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+
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+ /* THRS_2 : critical */
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+ nv_wr32(therm, 0x204c0, sensor->thrs_critical.temp);
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+
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+ /* THRS_4 : down clock */
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+ nv_wr32(therm, 0x20414, sensor->thrs_down_clock.temp);
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+ spin_unlock_irqrestore(&priv->sensor.alarm_program_lock, flags);
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+
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+ nv_info(therm,
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+ "Programmed thresholds [ %d(%d), %d(%d), %d(%d), %d(%d) ]\n",
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+ sensor->thrs_fan_boost.temp, sensor->thrs_fan_boost.hysteresis,
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+ sensor->thrs_down_clock.temp,
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+ sensor->thrs_down_clock.hysteresis,
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+ sensor->thrs_critical.temp, sensor->thrs_critical.hysteresis,
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+ sensor->thrs_shutdown.temp, sensor->thrs_shutdown.hysteresis);
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+
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+}
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+
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+/* must be called with alarm_program_lock taken ! */
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+static void
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+nv84_therm_threshold_hyst_emulation(struct nouveau_therm *therm,
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+ uint32_t thrs_reg, u8 status_bit,
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+ const struct nvbios_therm_threshold *thrs,
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+ enum nouveau_therm_thrs thrs_name)
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+{
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+ enum nouveau_therm_thrs_direction direction;
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+ enum nouveau_therm_thrs_state prev_state, new_state;
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+ int temp, cur;
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+
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+ prev_state = nouveau_therm_sensor_get_threshold_state(therm, thrs_name);
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+ temp = nv_rd32(therm, thrs_reg);
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+
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+ /* program the next threshold */
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+ if (temp == thrs->temp) {
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+ nv_wr32(therm, thrs_reg, thrs->temp - thrs->hysteresis);
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+ new_state = NOUVEAU_THERM_THRS_HIGHER;
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+ } else {
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+ nv_wr32(therm, thrs_reg, thrs->temp);
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+ new_state = NOUVEAU_THERM_THRS_LOWER;
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+ }
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+
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+ /* fix the state (in case someone reprogrammed the alarms) */
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+ cur = therm->temp_get(therm);
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+ if (new_state == NOUVEAU_THERM_THRS_LOWER && cur > thrs->temp)
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+ new_state = NOUVEAU_THERM_THRS_HIGHER;
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+ else if (new_state == NOUVEAU_THERM_THRS_HIGHER &&
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+ cur < thrs->temp - thrs->hysteresis)
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+ new_state = NOUVEAU_THERM_THRS_LOWER;
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+ nouveau_therm_sensor_set_threshold_state(therm, thrs_name, new_state);
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+
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+ /* find the direction */
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+ if (prev_state < new_state)
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+ direction = NOUVEAU_THERM_THRS_RISING;
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+ else if (prev_state > new_state)
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+ direction = NOUVEAU_THERM_THRS_FALLING;
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+ else
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+ return;
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+
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+ /* advertise a change in direction */
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+ nouveau_therm_sensor_event(therm, thrs_name, direction);
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+}
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+
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+static void
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+nv84_therm_intr(struct nouveau_subdev *subdev)
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+{
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+ struct nouveau_therm *therm = nouveau_therm(subdev);
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+ struct nouveau_therm_priv *priv = (void *)therm;
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+ struct nvbios_therm_sensor *sensor = &priv->bios_sensor;
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+ unsigned long flags;
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+ uint32_t intr;
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+
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+ spin_lock_irqsave(&priv->sensor.alarm_program_lock, flags);
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+
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+ intr = nv_rd32(therm, 0x20100);
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+
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+ /* THRS_4: downclock */
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+ if (intr & 0x002) {
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+ nv84_therm_threshold_hyst_emulation(therm, 0x20414, 24,
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+ &sensor->thrs_down_clock,
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+ NOUVEAU_THERM_THRS_DOWNCLOCK);
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+ intr &= ~0x002;
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+ }
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+
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+ /* shutdown */
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+ if (intr & 0x004) {
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+ nv84_therm_threshold_hyst_emulation(therm, 0x20480, 20,
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+ &sensor->thrs_shutdown,
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+ NOUVEAU_THERM_THRS_SHUTDOWN);
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+ intr &= ~0x004;
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+ }
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+
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+ /* THRS_1 : fan boost */
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+ if (intr & 0x008) {
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+ nv84_therm_threshold_hyst_emulation(therm, 0x204c4, 21,
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+ &sensor->thrs_fan_boost,
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+ NOUVEAU_THERM_THRS_FANBOOST);
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+ intr &= ~0x008;
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+ }
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+
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+ /* THRS_2 : critical */
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+ if (intr & 0x010) {
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+ nv84_therm_threshold_hyst_emulation(therm, 0x204c0, 22,
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+ &sensor->thrs_critical,
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+ NOUVEAU_THERM_THRS_CRITICAL);
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+ intr &= ~0x010;
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+ }
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+
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+ if (intr)
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+ nv_error(therm, "unhandled intr 0x%08x\n", intr);
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+
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+ /* ACK everything */
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+ nv_wr32(therm, 0x20100, 0xffffffff);
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+ nv_wr32(therm, 0x1100, 0x10000); /* PBUS */
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+
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+ spin_unlock_irqrestore(&priv->sensor.alarm_program_lock, flags);
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+}
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+
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+static int
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+nv84_therm_ctor(struct nouveau_object *parent,
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+ struct nouveau_object *engine,
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+ struct nouveau_oclass *oclass, void *data, u32 size,
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+ struct nouveau_object **pobject)
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+{
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+ struct nv84_therm_priv *priv;
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+ int ret;
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+
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+ ret = nouveau_therm_create(parent, engine, oclass, &priv);
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+ *pobject = nv_object(priv);
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+ if (ret)
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+ return ret;
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+
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+ priv->base.base.pwm_ctrl = nv50_fan_pwm_ctrl;
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+ priv->base.base.pwm_get = nv50_fan_pwm_get;
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+ priv->base.base.pwm_set = nv50_fan_pwm_set;
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+ priv->base.base.pwm_clock = nv50_fan_pwm_clock;
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+ priv->base.base.temp_get = nv84_temp_get;
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+ priv->base.sensor.program_alarms = nv84_therm_program_alarms;
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+ nv_subdev(priv)->intr = nv84_therm_intr;
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+
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+ /* init the thresholds */
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+ nouveau_therm_sensor_set_threshold_state(&priv->base.base,
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+ NOUVEAU_THERM_THRS_SHUTDOWN,
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+ NOUVEAU_THERM_THRS_LOWER);
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+ nouveau_therm_sensor_set_threshold_state(&priv->base.base,
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+ NOUVEAU_THERM_THRS_FANBOOST,
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+ NOUVEAU_THERM_THRS_LOWER);
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+ nouveau_therm_sensor_set_threshold_state(&priv->base.base,
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+ NOUVEAU_THERM_THRS_CRITICAL,
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+ NOUVEAU_THERM_THRS_LOWER);
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+ nouveau_therm_sensor_set_threshold_state(&priv->base.base,
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+ NOUVEAU_THERM_THRS_DOWNCLOCK,
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+ NOUVEAU_THERM_THRS_LOWER);
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+
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+ return nouveau_therm_preinit(&priv->base.base);
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+}
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+
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+struct nouveau_oclass
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+nv84_therm_oclass = {
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+ .handle = NV_SUBDEV(THERM, 0x84),
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+ .ofuncs = &(struct nouveau_ofuncs) {
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+ .ctor = nv84_therm_ctor,
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+ .dtor = _nouveau_therm_dtor,
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+ .init = _nouveau_therm_init,
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+ .fini = _nouveau_therm_fini,
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+ },
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+};
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Martin Peres