diff options
| author | Ben Skeggs <bskeggs@redhat.com> | 2013-11-04 10:52:29 +1000 |
|---|---|---|
| committer | Ben Skeggs <bskeggs@redhat.com> | 2013-11-08 16:04:23 +1000 |
| commit | fa95062e052723fdeaede16af736c2bcc4cd1537 (patch) | |
| tree | c34dcfec6d55e0d03dcae5a5057b7f205fc93d55 /drivers/gpu/drm/nouveau | |
| parent | 0035c5a94910beaf5f1bb369b296ce38610d6752 (diff) | |
drm/nv94-nvc0/disp: reorder writes to lane current control regs
Fixes link training issues on some boards.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Diffstat (limited to 'drivers/gpu/drm/nouveau')
| -rw-r--r-- | drivers/gpu/drm/nouveau/core/engine/disp/sornv94.c | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/drivers/gpu/drm/nouveau/core/engine/disp/sornv94.c b/drivers/gpu/drm/nouveau/core/engine/disp/sornv94.c index 7ec4ee83fb64..eea3ef59693d 100644 --- a/drivers/gpu/drm/nouveau/core/engine/disp/sornv94.c +++ b/drivers/gpu/drm/nouveau/core/engine/disp/sornv94.c @@ -97,8 +97,9 @@ nv94_sor_dp_drv_ctl(struct nouveau_disp *disp, struct dcb_output *outp, { struct nouveau_bios *bios = nouveau_bios(disp); struct nv50_disp_priv *priv = (void *)disp; + const u32 shift = nv94_sor_dp_lane_map(priv, lane); const u32 loff = nv94_sor_loff(outp); - u32 addr, shift = nv94_sor_dp_lane_map(priv, lane); + u32 addr, data[3]; u8 ver, hdr, cnt, len; struct nvbios_dpout info; struct nvbios_dpcfg ocfg; @@ -113,9 +114,12 @@ nv94_sor_dp_drv_ctl(struct nouveau_disp *disp, struct dcb_output *outp, if (!addr) return -EINVAL; - nv_mask(priv, 0x61c118 + loff, 0x000000ff << shift, ocfg.drv << shift); - nv_mask(priv, 0x61c120 + loff, 0x000000ff << shift, ocfg.pre << shift); - nv_mask(priv, 0x61c130 + loff, 0x0000ff00, ocfg.unk << 8); + data[0] = nv_rd32(priv, 0x61c118 + loff) & ~(0x000000ff << shift); + data[1] = nv_rd32(priv, 0x61c120 + loff) & ~(0x000000ff << shift); + data[2] = nv_rd32(priv, 0x61c130 + loff) & ~(0x0000ff00); + nv_wr32(priv, 0x61c118 + loff, data[0] | (ocfg.drv << shift)); + nv_wr32(priv, 0x61c120 + loff, data[1] | (ocfg.pre << shift)); + nv_wr32(priv, 0x61c130 + loff, data[2] | (ocfg.unk << 8)); return 0; } |