[Intel-gfx] [PATCH 1/2] drm/i915/lvds: separate border enable readout from panel fitter

[Jani Nikula]

The LVDS border enable is independent from the panel fitter. Move the
readout of the "border bits" from i9xx_get_pfit_config() to
intel_lvds_get_config(), where it will be read if LVDS is enabled even
if the panel fitter is not.

This fixes the state checker warning:

[drm:intel_pipe_config_compare [i915]] *ERROR* mismatch in
gmch_pfit.lvds_border_bits (expected 0x00008000, found 0x00000000)

Cc: Ville Syrjälä <ville.syrjala at linux.intel.com>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=87632
Signed-off-by: Jani Nikula <jani.nikula at intel.com>
---
 drivers/gpu/drm/i915/intel_display.c | 3 ---
 drivers/gpu/drm/i915/intel_lvds.c    | 4 ++++
 2 files changed, 4 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 5ffccf6e7f36..0fccebbd41a3 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -8022,9 +8022,6 @@ static void i9xx_get_pfit_config(struct intel_crtc *crtc,
 
 	pipe_config->gmch_pfit.control = tmp;
 	pipe_config->gmch_pfit.pgm_ratios = I915_READ(PFIT_PGM_RATIOS);
-	if (INTEL_INFO(dev)->gen < 5)
-		pipe_config->gmch_pfit.lvds_border_bits =
-			I915_READ(LVDS) & LVDS_BORDER_ENABLE;
 }
 
 static void vlv_crtc_clock_get(struct intel_crtc *crtc,
diff --git a/drivers/gpu/drm/i915/intel_lvds.c b/drivers/gpu/drm/i915/intel_lvds.c
index 66e832beeb37..bc53c0dd34d0 100644
--- a/drivers/gpu/drm/i915/intel_lvds.c
+++ b/drivers/gpu/drm/i915/intel_lvds.c
@@ -122,6 +122,10 @@ static void intel_lvds_get_config(struct intel_encoder *encoder,
 
 	pipe_config->base.adjusted_mode.flags |= flags;
 
+	if (INTEL_INFO(dev)->gen < 5)
+		pipe_config->gmch_pfit.lvds_border_bits =
+			tmp & LVDS_BORDER_ENABLE;
+
 	/* gen2/3 store dither state in pfit control, needs to match */
 	if (INTEL_INFO(dev)->gen < 4) {
 		tmp = I915_READ(PFIT_CONTROL);
-- 
2.1.4