drm/nv40/pm: parse geometric delta clock from vbios

This changes the meaning of what we reported as "core" clock previously.

The shader/rop units are allegedly supposed to be run at the base clock
listed in the perf table, while the geometric clock can be bumped from
this value on some boards.

So that we can report both, we'll report the base clock as "shader" (since
the shaders *do* run at it), and the geometric clock as "core".

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

1 files changed, 3 insertions, 2 deletions

diff --git a/drivers/gpu/drm/nouveau/nouveau_perf.c b/drivers/gpu/drm/nouveau/nouveau_perf.c
index 854ca85..9f178aa 100644
--- a/drivers/gpu/drm/nouveau/nouveau_perf.c
+++ b/drivers/gpu/drm/nouveau/nouveau_perf.c
@@ -275,8 +275,9 @@ nouveau_perf_init(struct drm_device *dev)
 		case 0x24:
 			perflvl->fanspeed = entry[4];
 			perflvl->volt_min = entry[5];
-			perflvl->core = ROM16(entry[6]) * 1000;
-
+			perflvl->shader = ROM16(entry[6]) * 1000;
+			perflvl->core = perflvl->shader;
+			perflvl->core += (signed char)entry[8] * 1000;
 			if (dev_priv->chipset == 0x49 ||
 			    dev_priv->chipset == 0x4b)
 				perflvl->memory = ROM16(entry[11]) * 1000;