[Intel-gfx] [PATCH 05/12] drm/i915: Extract intel_bigjoiner_adjust_timings()

[Ville Syrjala]

From: Ville Syrjälä <ville.syrjala at linux.intel.com>

Deduplicate the code to convert the full timings to
per-pipe timings for bigjoiner usage.

Signed-off-by: Ville Syrjälä <ville.syrjala at linux.intel.com>
---
 drivers/gpu/drm/i915/display/intel_display.c | 41 +++++++++-----------
 1 file changed, 18 insertions(+), 23 deletions(-)

diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c
index 70017526fa81..19417ff975c6 100644
--- a/drivers/gpu/drm/i915/display/intel_display.c
+++ b/drivers/gpu/drm/i915/display/intel_display.c
@@ -2724,6 +2724,21 @@ static void intel_crtc_compute_pixel_rate(struct intel_crtc_state *crtc_state)
 			ilk_pipe_pixel_rate(crtc_state);
 }
 
+static void intel_bigjoiner_adjust_timings(const struct intel_crtc_state *crtc_state,
+					   struct drm_display_mode *mode)
+{
+	if (!crtc_state->bigjoiner)
+		return;
+
+	mode->crtc_clock /= 2;
+	mode->crtc_hdisplay /= 2;
+	mode->crtc_hblank_start /= 2;
+	mode->crtc_hblank_end /= 2;
+	mode->crtc_hsync_start /= 2;
+	mode->crtc_hsync_end /= 2;
+	mode->crtc_htotal /= 2;
+}
+
 static void intel_splitter_adjust_timings(const struct intel_crtc_state *crtc_state,
 					  struct drm_display_mode *mode)
 {
@@ -2756,19 +2771,7 @@ static void intel_crtc_readout_derived_state(struct intel_crtc_state *crtc_state
 
 	drm_mode_copy(pipe_mode, adjusted_mode);
 
-	if (crtc_state->bigjoiner) {
-		/*
-		 * transcoder is programmed to the full mode,
-		 * but pipe timings are half of the transcoder mode
-		 */
-		pipe_mode->crtc_hdisplay /= 2;
-		pipe_mode->crtc_hblank_start /= 2;
-		pipe_mode->crtc_hblank_end /= 2;
-		pipe_mode->crtc_hsync_start /= 2;
-		pipe_mode->crtc_hsync_end /= 2;
-		pipe_mode->crtc_htotal /= 2;
-		pipe_mode->crtc_clock /= 2;
-	}
+	intel_bigjoiner_adjust_timings(crtc_state, pipe_mode);
 
 	if (crtc_state->splitter.enable) {
 		intel_splitter_adjust_timings(crtc_state, pipe_mode);
@@ -2804,17 +2807,9 @@ static int intel_crtc_compute_config(struct intel_crtc *crtc,
 
 	drm_mode_copy(pipe_mode, &crtc_state->hw.adjusted_mode);
 
-	/* Adjust pipe_mode for bigjoiner, with half the horizontal mode */
-	if (crtc_state->bigjoiner) {
-		pipe_mode->crtc_clock /= 2;
-		pipe_mode->crtc_hdisplay /= 2;
-		pipe_mode->crtc_hblank_start /= 2;
-		pipe_mode->crtc_hblank_end /= 2;
-		pipe_mode->crtc_hsync_start /= 2;
-		pipe_mode->crtc_hsync_end /= 2;
-		pipe_mode->crtc_htotal /= 2;
+	intel_bigjoiner_adjust_timings(crtc_state, pipe_mode);
+	if (crtc_state->bigjoiner)
 		crtc_state->pipe_src_w /= 2;
-	}
 
 	intel_splitter_adjust_timings(crtc_state, pipe_mode);
 
-- 
2.34.1