summaryrefslogtreecommitdiffstats
diff options
context:
space:
mode:
authorBen Skeggs <bskeggs@redhat.com>2018-01-12 19:02:05 +1000
committerBen Skeggs <bskeggs@redhat.com>2018-02-02 15:24:07 +1000
commit90df522912ac1fa88836fa1b1b9fa102a48d1f33 (patch)
treeed99fa529f60191febe6312b00a566ee4226784a
parente75182f68b7b3a073e33b89ee4c1688160755930 (diff)
downloadlinux-90df522912ac1fa88836fa1b1b9fa102a48d1f33.tar.gz
linux-90df522912ac1fa88836fa1b1b9fa102a48d1f33.tar.bz2
linux-90df522912ac1fa88836fa1b1b9fa102a48d1f33.zip
drm/nouveau/kms/nv50: use INTERPOLATE_257_UNITY_RANGE LUT on newer chipsets
For some reason forgotten by history, we've been using a 1025-entry LUT mode, and sparsely filling it with the 256-entry LUT we're handed. Until we land support for the full atomic colour management properties, this commit switches to using the 257-entry mode to fix colour mapping with depth 30 framebuffers. Reported-by: Ilia Mirkin <imirkin@alum.mit.edu> Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
-rw-r--r--drivers/gpu/drm/nouveau/nv50_display.c8
1 files changed, 4 insertions, 4 deletions
diff --git a/drivers/gpu/drm/nouveau/nv50_display.c b/drivers/gpu/drm/nouveau/nv50_display.c
index f4daf8c55de1..973a41262139 100644
--- a/drivers/gpu/drm/nouveau/nv50_display.c
+++ b/drivers/gpu/drm/nouveau/nv50_display.c
@@ -1818,7 +1818,7 @@ nv50_head_lut_set(struct nv50_head *head, struct nv50_head_atom *asyh)
evo_data(push, asyh->lut.handle);
} else {
evo_mthd(push, 0x0440 + (head->base.index * 0x300), 4);
- evo_data(push, 0x83000000);
+ evo_data(push, 0x87000000);
evo_data(push, asyh->lut.offset >> 8);
evo_data(push, 0x00000000);
evo_data(push, 0x00000000);
@@ -2225,9 +2225,9 @@ nv50_head_lut_load(struct drm_crtc *crtc)
writew((*b++ >> 2) + 0x0000, lut + (i * 0x08) + 4);
} else {
/* 0x6000 interferes with the 14-bit color??? */
- writew((*r++ >> 2) + 0x6000, lut + (i * 0x20) + 0);
- writew((*g++ >> 2) + 0x6000, lut + (i * 0x20) + 2);
- writew((*b++ >> 2) + 0x6000, lut + (i * 0x20) + 4);
+ writew((*r++ >> 2) + 0x6000, lut + (i * 0x08) + 0);
+ writew((*g++ >> 2) + 0x6000, lut + (i * 0x08) + 2);
+ writew((*b++ >> 2) + 0x6000, lut + (i * 0x08) + 4);
}
}
}