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drm/g94-/disp: bash and wait for something after changing lane power regs
author
Ben Skeggs
<bskeggs@redhat.com>
Mon, 26 May 2014 02:00:07 +0000
(12:00 +1000)
committer
Ben Skeggs
<bskeggs@redhat.com>
Wed, 11 Jun 2014 06:10:47 +0000
(16:10 +1000)
Some kind of update? Needed to make the power-down take effect at least.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
drivers/gpu/drm/nouveau/core/engine/disp/sornv94.c
patch
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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
(file)
--- 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;
}