From 13a61757db124b16cef9b8f9b60ff7337a01b398 Mon Sep 17 00:00:00 2001 From: Ben Skeggs Date: Mon, 26 May 2014 12:00:07 +1000 Subject: [PATCH] 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: Ben Skeggs --- drivers/gpu/drm/nouveau/core/engine/disp/sornv94.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/gpu/drm/nouveau/core/engine/disp/sornv94.c b/drivers/gpu/drm/nouveau/core/engine/disp/sornv94.c index 95d8c53..834ee0e 100644 --- a/drivers/gpu/drm/nouveau/core/engine/disp/sornv94.c +++ b/drivers/gpu/drm/nouveau/core/engine/disp/sornv94.c @@ -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; } -- 2.7.4