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drm/radeon/kms: fix legacy LVDS dpms sequence

Add delay after turning off the LVDS encoder.

Fixes:
https://bugzilla.kernel.org/show_bug.cgi?id=16389

Tested-by: Jan Kreuzer <kontrollator@gmx.de>
Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Cc: stable@kernel.org
Signed-off-by: Dave Airlie <airlied@redhat.com>
Alex Deucher 15 years ago
parent
29508eb66b
commit
15cb02c0a0
1 changed files with 1 additions and 0 deletions
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  1. 1 0
      drivers/gpu/drm/radeon/radeon_legacy_encoders.c

+ 1 - 0
drivers/gpu/drm/radeon/radeon_legacy_encoders.c
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@@ -108,6 +108,7 @@ static void radeon_legacy_lvds_dpms(struct drm_encoder *encoder, int mode)
 
 		udelay(panel_pwr_delay * 1000);
 
 		WREG32(RADEON_LVDS_GEN_CNTL, lvds_gen_cntl);
 
 		WREG32_PLL(RADEON_PIXCLKS_CNTL, pixclks_cntl);
 
+		udelay(panel_pwr_delay * 1000);
 
 		break;
 
 	}