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Commit 7dde8a19 authored by Alex Deucher's avatar Alex Deucher Committed by Dave Airlie
Browse files

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: default avatarAlex Deucher <alexdeucher@gmail.com>
Signed-off-by: default avatarDave Airlie <airlied@redhat.com>
parent 30256a3f

drivers/gpu/drm/radeon/radeon_atombios.c

+14 −1
Original line number Diff line number Diff line
@@ -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);