[PATCH AUTOSEL 5.3 54/87] drm/nouveau/kms/tu102-: disable input lut when input is already FP16

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



From: Ben Skeggs <bskeggs@xxxxxxxxxx>

[ Upstream commit 1e339ab2ac3c769c1b06b9fb7d532f8495ebc56d ]

On Turing, an input LUT is required to transform inputs in fixed-point
formats to FP16 for the internal display pipe.  We provide an identity
mapping whenever a window is enabled for this reason.

HW has error checks to ensure when the input is already FP16, that the
input LUT is also disabled.

Signed-off-by: Ben Skeggs <bskeggs@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
 drivers/gpu/drm/nouveau/dispnv50/wndw.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/nouveau/dispnv50/wndw.c b/drivers/gpu/drm/nouveau/dispnv50/wndw.c
index 283ff690350ea..50303ec194bbc 100644
--- a/drivers/gpu/drm/nouveau/dispnv50/wndw.c
+++ b/drivers/gpu/drm/nouveau/dispnv50/wndw.c
@@ -320,7 +320,9 @@ nv50_wndw_atomic_check_lut(struct nv50_wndw *wndw,
 		asyh->wndw.olut &= ~BIT(wndw->id);
 	}
 
-	if (!ilut && wndw->func->ilut_identity) {
+	if (!ilut && wndw->func->ilut_identity &&
+	    asyw->state.fb->format->format != DRM_FORMAT_XBGR16161616F &&
+	    asyw->state.fb->format->format != DRM_FORMAT_ABGR16161616F) {
 		static struct drm_property_blob dummy = {};
 		ilut = &dummy;
 	}
-- 
2.20.1

_______________________________________________
dri-devel mailing list
dri-devel@xxxxxxxxxxxxxxxxxxxxx
https://lists.freedesktop.org/mailman/listinfo/dri-devel




[Index of Archives]     [Linux DRI Users]     [Linux Intel Graphics]     [Linux USB Devel]     [Video for Linux]     [Linux Audio Users]     [Yosemite News]     [Linux Kernel]     [Linux SCSI]     [XFree86]     [Linux USB Devel]     [Video for Linux]     [Linux Audio Users]     [Linux Kernel]     [Linux SCSI]     [XFree86]
  Powered by Linux