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drm/radeon/kms/atom: pull misc mode info for lvds from bios tables 

sync polarity, etc.  This will likely fix LVDS problems
on some laptops.

Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Alex Deucher 2009-11-30 01:40:24 -05:00 committed by Dave Airlie
parent 30256a3f6b
commit 7dde8a1965
1 changed files with 14 additions and 1 deletions
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15
drivers/gpu/drm/radeon/radeon_atombios.c
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@ -910,7 +910,7 @@ struct radeon_encoder_atom_dig *radeon_atombios_get_lvds_info(struct
struct radeon_device *rdev = dev->dev_private;
struct radeon_mode_info *mode_info = &rdev->mode_info;
int index = GetIndexIntoMasterTable(DATA, LVDS_Info);
uint16_t data_offset;
uint16_t data_offset, misc;
union lvds_info *lvds_info;
uint8_t frev, crev;
struct radeon_encoder_atom_dig *lvds = NULL;
@ -949,6 +949,19 @@ struct radeon_encoder_atom_dig *radeon_atombios_get_lvds_info(struct
lvds->panel_pwr_delay =
le16_to_cpu(lvds_info->info.usOffDelayInMs);
lvds->lvds_misc = lvds_info->info.ucLVDS_Misc;
misc = le16_to_cpu(lvds_info->info.sLCDTiming.susModeMiscInfo.usAccess);
if (misc & ATOM_VSYNC_POLARITY)
lvds->native_mode.flags |= DRM_MODE_FLAG_NVSYNC;
if (misc & ATOM_HSYNC_POLARITY)
lvds->native_mode.flags |= DRM_MODE_FLAG_NHSYNC;
if (misc & ATOM_COMPOSITESYNC)
lvds->native_mode.flags |= DRM_MODE_FLAG_CSYNC;
if (misc & ATOM_INTERLACE)
lvds->native_mode.flags |= DRM_MODE_FLAG_INTERLACE;
if (misc & ATOM_DOUBLE_CLOCK_MODE)
lvds->native_mode.flags |= DRM_MODE_FLAG_DBLSCAN;
/* set crtc values */
drm_mode_set_crtcinfo(&lvds->native_mode, CRTC_INTERLACE_HALVE_V);