diff options
| author | Jonathan Gray <jsg@cvs.openbsd.org> | 2014-02-10 00:17:31 +0000 |
|---|---|---|
| committer | Jonathan Gray <jsg@cvs.openbsd.org> | 2014-02-10 00:17:31 +0000 |
| commit | 5b78a4fb661321c76171560ac0dcfbbbb9754f7b (patch) | |
| tree | 96b04f736ae7c7849d89ad313cc7b5c56f48be9f /sys/dev/pci/drm | |
| parent | 73b6f3ac235a7dd1e795cee407e6b85e3b1fa4b7 (diff) | |
drm/radeon: improve dac adjust heuristics for legacy pdac
From Alex Deucher
f9474faaff4435129181db3000ff57ef2be7ab3e in ubuntu 3.8
03ed8cf9b28d886c64c7e705c7bb1a365fd8fb95 in mainline linux
Diffstat (limited to 'sys/dev/pci/drm')
| -rw-r--r-- | sys/dev/pci/drm/radeon/radeon_combios.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/sys/dev/pci/drm/radeon/radeon_combios.c b/sys/dev/pci/drm/radeon/radeon_combios.c index cbf2e547ba3..ab30e0732f6 100644 --- a/sys/dev/pci/drm/radeon/radeon_combios.c +++ b/sys/dev/pci/drm/radeon/radeon_combios.c @@ -1,4 +1,4 @@ -/* $OpenBSD: radeon_combios.c,v 1.3 2014/02/10 00:10:12 jsg Exp $ */ +/* $OpenBSD: radeon_combios.c,v 1.4 2014/02/10 00:17:30 jsg Exp $ */ /* * Copyright 2004 ATI Technologies Inc., Markham, Ontario * Copyright 2007-8 Advanced Micro Devices, Inc. @@ -898,8 +898,10 @@ struct radeon_encoder_primary_dac *radeon_combios_get_primary_dac_info(struct dac = RBIOS8(dac_info + 0x3) & 0xf; p_dac->ps2_pdac_adj = (bg << 8) | (dac); } - /* if the values are all zeros, use the table */ - if (p_dac->ps2_pdac_adj) + /* if the values are zeros, use the table */ + if ((dac == 0) || (bg == 0)) + found = 0; + else found = 1; } |