diff options
author | Ben Skeggs <bskeggs@redhat.com> | 2013-06-03 16:07:06 +1000 |
---|---|---|
committer | Ben Skeggs <bskeggs@redhat.com> | 2013-06-05 14:03:01 +1000 |
commit | ea9197cc323839ef3d5280c0453b2c622caa6bc7 (patch) | |
tree | 92285d555c62a69c58722fff161ff24e7070513f /drivers/gpu/drm/nouveau/core/engine | |
parent | 89e033a4bc688bc6631c6de8b66d7f26f8e0652b (diff) |
drm/nv50/disp: force dac power state during load detect
fdo#64904
Reported-by: Gerhard Bräunlich <wippbox@gmx.net>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Diffstat (limited to 'drivers/gpu/drm/nouveau/core/engine')
-rw-r--r-- | drivers/gpu/drm/nouveau/core/engine/disp/dacnv50.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/core/engine/disp/dacnv50.c b/drivers/gpu/drm/nouveau/core/engine/disp/dacnv50.c index d0817d94454c..a60a5accb540 100644 --- a/drivers/gpu/drm/nouveau/core/engine/disp/dacnv50.c +++ b/drivers/gpu/drm/nouveau/core/engine/disp/dacnv50.c @@ -50,11 +50,15 @@ nv50_dac_sense(struct nv50_disp_priv *priv, int or, u32 loadval) { const u32 doff = (or * 0x800); int load = -EINVAL; + nv_mask(priv, 0x61a004 + doff, 0x807f0000, 0x80150000); + nv_wait(priv, 0x61a004 + doff, 0x80000000, 0x00000000); nv_wr32(priv, 0x61a00c + doff, 0x00100000 | loadval); udelay(9500); nv_wr32(priv, 0x61a00c + doff, 0x80000000); load = (nv_rd32(priv, 0x61a00c + doff) & 0x38000000) >> 27; nv_wr32(priv, 0x61a00c + doff, 0x00000000); + nv_mask(priv, 0x61a004 + doff, 0x807f0000, 0x80550000); + nv_wait(priv, 0x61a004 + doff, 0x80000000, 0x00000000); return load; } |