e1404611d5
The namespace of NVKM is being changed to nvkm_ instead of nouveau_, which will be used for the DRM part of the driver. This is being done in order to make it very clear as to what part of the driver a given symbol belongs to, and as a minor step towards splitting the DRM driver out to be able to stand on its own (for virt). Because there's already a large amount of churn here anyway, this is as good a time as any to also switch to NVIDIA's device and chipset naming to ease collaboration with them. A comparison of objdump disassemblies proves no code changes. Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
118 lines
3.4 KiB
C
118 lines
3.4 KiB
C
/*
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* Copyright 2012 The Nouveau community
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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: Martin Peres
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*/
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#include "priv.h"
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#include <subdev/gpio.h>
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#include <subdev/timer.h>
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struct nvkm_fantog_priv {
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struct nvkm_fan base;
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struct nvkm_alarm alarm;
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spinlock_t lock;
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u32 period_us;
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u32 percent;
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struct dcb_gpio_func func;
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};
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static void
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nvkm_fantog_update(struct nvkm_fantog_priv *priv, int percent)
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{
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struct nvkm_therm_priv *tpriv = (void *)priv->base.parent;
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struct nvkm_timer *ptimer = nvkm_timer(tpriv);
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struct nvkm_gpio *gpio = nvkm_gpio(tpriv);
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unsigned long flags;
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int duty;
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spin_lock_irqsave(&priv->lock, flags);
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if (percent < 0)
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percent = priv->percent;
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priv->percent = percent;
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duty = !gpio->get(gpio, 0, DCB_GPIO_FAN, 0xff);
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gpio->set(gpio, 0, DCB_GPIO_FAN, 0xff, duty);
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if (list_empty(&priv->alarm.head) && percent != (duty * 100)) {
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u64 next_change = (percent * priv->period_us) / 100;
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if (!duty)
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next_change = priv->period_us - next_change;
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ptimer->alarm(ptimer, next_change * 1000, &priv->alarm);
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}
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spin_unlock_irqrestore(&priv->lock, flags);
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}
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static void
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nvkm_fantog_alarm(struct nvkm_alarm *alarm)
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{
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struct nvkm_fantog_priv *priv =
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container_of(alarm, struct nvkm_fantog_priv, alarm);
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nvkm_fantog_update(priv, -1);
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}
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static int
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nvkm_fantog_get(struct nvkm_therm *therm)
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{
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struct nvkm_therm_priv *tpriv = (void *)therm;
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struct nvkm_fantog_priv *priv = (void *)tpriv->fan;
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return priv->percent;
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}
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static int
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nvkm_fantog_set(struct nvkm_therm *therm, int percent)
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{
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struct nvkm_therm_priv *tpriv = (void *)therm;
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struct nvkm_fantog_priv *priv = (void *)tpriv->fan;
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if (therm->pwm_ctrl)
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therm->pwm_ctrl(therm, priv->func.line, false);
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nvkm_fantog_update(priv, percent);
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return 0;
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}
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int
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nvkm_fantog_create(struct nvkm_therm *therm, struct dcb_gpio_func *func)
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{
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struct nvkm_therm_priv *tpriv = (void *)therm;
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struct nvkm_fantog_priv *priv;
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int ret;
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if (therm->pwm_ctrl) {
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ret = therm->pwm_ctrl(therm, func->line, false);
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if (ret)
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return ret;
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}
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priv = kzalloc(sizeof(*priv), GFP_KERNEL);
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tpriv->fan = &priv->base;
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if (!priv)
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return -ENOMEM;
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priv->base.type = "toggle";
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priv->base.get = nvkm_fantog_get;
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priv->base.set = nvkm_fantog_set;
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nvkm_alarm_init(&priv->alarm, nvkm_fantog_alarm);
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priv->period_us = 100000; /* 10Hz */
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priv->percent = 100;
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priv->func = *func;
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spin_lock_init(&priv->lock);
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return 0;
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}
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