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/*
* Copyright 2012 Red Hat Inc.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*
* Authors: Ben Skeggs
*/
#include "priv.h"
#include <subdev/gpio.h>
struct gt215_therm_priv {
struct nvkm_therm_priv base;
};
int
gt215_therm_fan_sense(struct nvkm_therm *therm)
{
u32 tach = nv_rd32(therm, 0x00e728) & 0x0000ffff;
u32 ctrl = nv_rd32(therm, 0x00e720);
if (ctrl & 0x00000001)
return tach * 60 / 2;
return -ENODEV;
}
static int
gt215_therm_init(struct nvkm_object *object)
{
struct gt215_therm_priv *priv = (void *)object;
struct dcb_gpio_func *tach = &priv->base.fan->tach;
int ret;
ret = nvkm_therm_init(&priv->base.base);
if (ret)
return ret;
g84_sensor_setup(&priv->base.base);
/* enable fan tach, count revolutions per-second */
nv_mask(priv, 0x00e720, 0x00000003, 0x00000002);
if (tach->func != DCB_GPIO_UNUSED) {
nv_wr32(priv, 0x00e724, nv_device(priv)->crystal * 1000);
nv_mask(priv, 0x00e720, 0x001f0000, tach->line << 16);
nv_mask(priv, 0x00e720, 0x00000001, 0x00000001);
}
nv_mask(priv, 0x00e720, 0x00000002, 0x00000000);
return 0;
}
static int
gt215_therm_ctor(struct nvkm_object *parent, struct nvkm_object *engine,
struct nvkm_oclass *oclass, void *data, u32 size,
struct nvkm_object **pobject)
{
struct gt215_therm_priv *priv;
int ret;
ret = nvkm_therm_create(parent, engine, oclass, &priv);
*pobject = nv_object(priv);
if (ret)
return ret;
priv->base.base.pwm_ctrl = nv50_fan_pwm_ctrl;
priv->base.base.pwm_get = nv50_fan_pwm_get;
priv->base.base.pwm_set = nv50_fan_pwm_set;
priv->base.base.pwm_clock = nv50_fan_pwm_clock;
priv->base.base.temp_get = g84_temp_get;
priv->base.base.fan_sense = gt215_therm_fan_sense;
priv->base.sensor.program_alarms = nvkm_therm_program_alarms_polling;
return nvkm_therm_preinit(&priv->base.base);
}
struct nvkm_oclass
gt215_therm_oclass = {
.handle = NV_SUBDEV(THERM, 0xa3),
.ofuncs = &(struct nvkm_ofuncs) {
.ctor = gt215_therm_ctor,
.dtor = _nvkm_therm_dtor,
.init = gt215_therm_init,
.fini = g84_therm_fini,
},
};
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