[Intel-gfx] [PATCH] drm/i915: Silence the change of LVDS sync polarity

[Chris Wilson]

When the change to start adjusting the sync polarity of the LVDS mode
was introduced in

commit aa9b500ddf1a6318e7cf8b1754696edddae86db9
Author: Bryan Freed <bfreed at google.com>
Date:   Wed Jan 12 13:43:19 2011 -0800

    drm/i915: Honour LVDS sync polarity from EDID

we made the change in state verbose so that we could quickly spot any
regressions that made have also been introduced with it. As there do not
appear to have been any, remove the extra logging.

Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
---
 drivers/gpu/drm/i915/intel_display.c |   34 ++++++----------------------------
 1 file changed, 6 insertions(+), 28 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index c4f05f8..3cc0b10 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -5474,22 +5474,11 @@ static void intel_update_lvds(struct drm_crtc *crtc, intel_clock_t *clock,
 		else
 			temp &= ~LVDS_ENABLE_DITHER;
 	}
+	temp &= ~(LVDS_HSYNC_POLARITY | LVDS_VSYNC_POLARITY);
 	if (adjusted_mode->flags & DRM_MODE_FLAG_NHSYNC)
-		lvds_sync |= LVDS_HSYNC_POLARITY;
+		temp |= LVDS_HSYNC_POLARITY;
 	if (adjusted_mode->flags & DRM_MODE_FLAG_NVSYNC)
-		lvds_sync |= LVDS_VSYNC_POLARITY;
-	if ((temp & (LVDS_HSYNC_POLARITY | LVDS_VSYNC_POLARITY))
-	    != lvds_sync) {
-		char flags[2] = "-+";
-		DRM_INFO("Changing LVDS panel from "
-			 "(%chsync, %cvsync) to (%chsync, %cvsync)\n",
-			 flags[!(temp & LVDS_HSYNC_POLARITY)],
-			 flags[!(temp & LVDS_VSYNC_POLARITY)],
-			 flags[!(lvds_sync & LVDS_HSYNC_POLARITY)],
-			 flags[!(lvds_sync & LVDS_VSYNC_POLARITY)]);
-		temp &= ~(LVDS_HSYNC_POLARITY | LVDS_VSYNC_POLARITY);
-		temp |= lvds_sync;
-	}
+		temp |= LVDS_VSYNC_POLARITY;
 	I915_WRITE(LVDS, temp);
 }
 
@@ -6328,22 +6317,11 @@ static int ironlake_crtc_mode_set(struct drm_crtc *crtc,
 		 * appropriately here, but we need to look more thoroughly into how
 		 * panels behave in the two modes.
 		 */
+		temp &= ~(LVDS_HSYNC_POLARITY | LVDS_VSYNC_POLARITY);
 		if (adjusted_mode->flags & DRM_MODE_FLAG_NHSYNC)
-			lvds_sync |= LVDS_HSYNC_POLARITY;
+			temp |= LVDS_HSYNC_POLARITY;
 		if (adjusted_mode->flags & DRM_MODE_FLAG_NVSYNC)
-			lvds_sync |= LVDS_VSYNC_POLARITY;
-		if ((temp & (LVDS_HSYNC_POLARITY | LVDS_VSYNC_POLARITY))
-		    != lvds_sync) {
-			char flags[2] = "-+";
-			DRM_INFO("Changing LVDS panel from "
-				 "(%chsync, %cvsync) to (%chsync, %cvsync)\n",
-				 flags[!(temp & LVDS_HSYNC_POLARITY)],
-				 flags[!(temp & LVDS_VSYNC_POLARITY)],
-				 flags[!(lvds_sync & LVDS_HSYNC_POLARITY)],
-				 flags[!(lvds_sync & LVDS_VSYNC_POLARITY)]);
-			temp &= ~(LVDS_HSYNC_POLARITY | LVDS_VSYNC_POLARITY);
-			temp |= lvds_sync;
-		}
+			temp |= LVDS_VSYNC_POLARITY;
 		I915_WRITE(PCH_LVDS, temp);
 	}
 
-- 
1.7.10