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Commit 13a61757 authored by Ben Skeggs's avatar Ben Skeggs
Browse files

drm/g94-/disp: bash and wait for something after changing lane power regs 



Some kind of update?  Needed to make the power-down take effect at least.

Signed-off-by: default avatarBen Skeggs <bskeggs@redhat.com>
parent 1ecee1cd

drivers/gpu/drm/nouveau/core/engine/disp/sornv94.c

+3 −0
Original line number Diff line number Diff line
@@ -69,6 +69,7 @@ int 
nv94_sor_dp_lnk_pwr(struct nvkm_output_dp *outp, int nr)

{

	struct nv50_disp_priv *priv = (void *)nouveau_disp(outp);

	const u32 soff = nv94_sor_soff(outp);

	const u32 loff = nv94_sor_loff(outp);

	u32 mask = 0, i;
@@ -76,6 +77,8 @@ nv94_sor_dp_lnk_pwr(struct nvkm_output_dp *outp, int nr) 
		mask |= 1 << (nv94_sor_dp_lane_map(priv, i) >> 3);



	nv_mask(priv, 0x61c130 + loff, 0x0000000f, mask);

	nv_mask(priv, 0x61c034 + soff, 0x80000000, 0x80000000);

	nv_wait(priv, 0x61c034 + soff, 0x80000000, 0x00000000);

	return 0;

}