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drm/nv40/therm: improve selection between the old and the new style 

The condition to select between the old and new style was a thinko
as rnndb orders chipsets based on their release date (or general
chronologie hw-wise) and not based on their chipset number.

As the nv40 family is a mess when it comes to numbers, this patch
introduces a switch-based selection between the old and new style.

Signed-off-by: Martin Peres <martin.peres@labri.fr>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
This commit is contained in:
Martin Peres 2013-03-05 10:26:30 +01:00 committed by Ben Skeggs
parent c1b90df225
commit 7ae9712c60
1 changed files with 39 additions and 13 deletions
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52
drivers/gpu/drm/nouveau/core/subdev/therm/nv40.c
View File

@ -29,42 +29,68 @@ struct nv40_therm_priv {
struct nouveau_therm_priv base;
};
static int
nv40_sensor_setup(struct nouveau_therm *therm)
enum nv40_sensor_style { INVALID_STYLE = -1, OLD_STYLE = 0, NEW_STYLE = 1 };
static enum nv40_sensor_style
nv40_sensor_style(struct nouveau_therm *therm)
{
struct nouveau_device *device = nv_device(therm);
switch (device->chipset) {
case 0x43:
case 0x44:
case 0x4a:
case 0x47:
return OLD_STYLE;
case 0x46:
case 0x49:
case 0x4b:
case 0x4e:
case 0x4c:
case 0x67:
case 0x68:
case 0x63:
return NEW_STYLE;
default:
return INVALID_STYLE;
}
}
static int
nv40_sensor_setup(struct nouveau_therm *therm)
{
enum nv40_sensor_style style = nv40_sensor_style(therm);
/* enable ADC readout and disable the ALARM threshold */
if (device->chipset >= 0x46) {
if (style == NEW_STYLE) {
nv_mask(therm, 0x15b8, 0x80000000, 0);
nv_wr32(therm, 0x15b0, 0x80003fff);
mdelay(10); /* wait for the temperature to stabilize */
return nv_rd32(therm, 0x15b4) & 0x3fff;
} else {
} else if (style == OLD_STYLE) {
nv_wr32(therm, 0x15b0, 0xff);
return nv_rd32(therm, 0x15b4) & 0xff;
}
} else
return -ENODEV;
}
static int
nv40_temp_get(struct nouveau_therm *therm)
{
struct nouveau_therm_priv *priv = (void *)therm;
struct nouveau_device *device = nv_device(therm);
struct nvbios_therm_sensor *sensor = &priv->bios_sensor;
enum nv40_sensor_style style = nv40_sensor_style(therm);
int core_temp;
if (device->chipset >= 0x46) {
if (style == NEW_STYLE) {
nv_wr32(therm, 0x15b0, 0x80003fff);
core_temp = nv_rd32(therm, 0x15b4) & 0x3fff;
} else {
} else if (style == OLD_STYLE) {
nv_wr32(therm, 0x15b0, 0xff);
core_temp = nv_rd32(therm, 0x15b4) & 0xff;
}
/* Setup the sensor if the temperature is 0 */
if (core_temp == 0)
core_temp = nv40_sensor_setup(therm);
} else
return -ENODEV;
if (sensor->slope_div == 0)
sensor->slope_div = 1;