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drm/nvd0/therm: add support for hardware fan tachometer

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Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
This commit is contained in:
Ben Skeggs 2012-12-04 12:10:19 +10:00
parent 7b49bd684c
commit 9cbcd3374a
3 changed files with 27 additions and 2 deletions
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2
drivers/gpu/drm/nouveau/core/subdev/therm/nva3.c
View File

@ -30,7 +30,7 @@ struct nva3_therm_priv {
struct nouveau_therm_priv base;
};
static int
int
nva3_therm_fan_sense(struct nouveau_therm *therm)
{
u32 tach = nv_rd32(therm, 0x00e728) & 0x0000ffff;

25
drivers/gpu/drm/nouveau/core/subdev/therm/nvd0.c
View File

@ -75,6 +75,28 @@ nvd0_fan_pwm_clock(struct nouveau_therm *therm)
return (nv_device(therm)->crystal * 1000) / 20;
}
static int
nvd0_therm_init(struct nouveau_object *object)
{
struct nvd0_therm_priv *priv = (void *)object;
int ret;
ret = nouveau_therm_init(&priv->base.base);
if (ret)
return ret;
/* enable fan tach, count revolutions per-second */
nv_mask(priv, 0x00e720, 0x00000003, 0x00000002);
if (priv->base.fan.tach.func != DCB_GPIO_UNUSED) {
nv_mask(priv, 0x00d79c, 0x000000ff, priv->base.fan.tach.line);
nv_wr32(priv, 0x00e724, nv_device(priv)->crystal * 1000);
nv_mask(priv, 0x00e720, 0x00000001, 0x00000001);
}
nv_mask(priv, 0x00e720, 0x00000002, 0x00000000);
return 0;
}
static int
nvd0_therm_ctor(struct nouveau_object *parent,
struct nouveau_object *engine,
@ -93,6 +115,7 @@ nvd0_therm_ctor(struct nouveau_object *parent,
priv->base.fan.pwm_set = nvd0_fan_pwm_set;
priv->base.fan.pwm_clock = nvd0_fan_pwm_clock;
priv->base.base.temp_get = nv50_temp_get;
priv->base.base.fan_sense = nva3_therm_fan_sense;
return 0;
}
@ -102,7 +125,7 @@ nvd0_therm_oclass = {
.ofuncs = &(struct nouveau_ofuncs) {
.ctor = nvd0_therm_ctor,
.dtor = _nouveau_therm_dtor,
.init = _nouveau_therm_init,
.init = nvd0_therm_init,
.fini = _nouveau_therm_fini,
},
};

2
drivers/gpu/drm/nouveau/core/subdev/therm/priv.h
View File

@ -80,4 +80,6 @@ int nv50_fan_pwm_set(struct nouveau_therm *, int, u32, u32);
int nv50_fan_pwm_clock(struct nouveau_therm *);
int nv50_temp_get(struct nouveau_therm *therm);
int nva3_therm_fan_sense(struct nouveau_therm *);
#endif