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Commit d40ee48a authored by Ben Skeggs's avatar Ben Skeggs
Browse files

drm/nv50/kms: use dac loadval from vbios, where it's available 



Regression from merging the old nv50/nvd9 code together, and may be
needed to fully fix fdo#64904.

The value is ignored completely by the hardware starting from nva3.

Reported-by: default avatarEmil Velikov <emil.l.velikov@gmail.com>
Signed-off-by: default avatarBen Skeggs <bskeggs@redhat.com>
parent ea9197cc

drivers/gpu/drm/nouveau/nv50_display.c

+3 −1
Original line number Diff line number Diff line
@@ -1554,7 +1554,9 @@ nv50_dac_detect(struct drm_encoder *encoder, struct drm_connector *connector) 
{

	struct nv50_disp *disp = nv50_disp(encoder->dev);

	int ret, or = nouveau_encoder(encoder)->or;

	u32 load = 0;

	u32 load = nouveau_drm(encoder->dev)->vbios.dactestval;

	if (load == 0)

		load = 340;



	ret = nv_exec(disp->core, NV50_DISP_DAC_LOAD + or, &load, sizeof(load));

	if (ret || load != 7)