[Intel-gfx] [PATCH 8/8] drm/i915: Simplify ironlake_crtc_compute_clock() CPU eDP case

[Ander Conselvan de Oliveira]

None of the code in ironlake_crtc_compute_clock() is relevant for CPU
eDP. The CPU eDP PLL is turned on and off in ironlake_edp_pll_{on,off}
from the DP code and that doesn't depend on the crtc_state->dpll values,
so just return early in that case.

Signed-off-by: Ander Conselvan de Oliveira <ander.conselvan.de.oliveira at intel.com>
---
 drivers/gpu/drm/i915/intel_display.c | 32 ++++++++++++++++----------------
 1 file changed, 16 insertions(+), 16 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index ef5f5ac..57dd1fb 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -8887,6 +8887,12 @@ static int ironlake_crtc_compute_clock(struct intel_crtc *crtc,
 	memset(&crtc_state->dpll_hw_state, 0,
 	       sizeof(crtc_state->dpll_hw_state));
 
+	crtc->lowfreq_avail = false;
+
+	/* CPU eDP is the only output that doesn't need a PCH PLL of its own. */
+	if (!crtc_state->has_pch_encoder)
+		return 0;
+
 	if (!crtc_state->clock_set) {
 		if (!ironlake_compute_clocks(&crtc->base, crtc_state,
 					     &clock)) {
@@ -8902,26 +8908,20 @@ static int ironlake_crtc_compute_clock(struct intel_crtc *crtc,
 		crtc_state->dpll.p2 = clock.p2;
 	}
 
-	/* CPU eDP is the only output that doesn't need a PCH PLL of its own. */
-	if (crtc_state->has_pch_encoder) {
-		fp = i9xx_dpll_compute_fp(&crtc_state->dpll);
-
-		dpll = ironlake_compute_dpll(crtc, crtc_state, &fp);
+	fp = i9xx_dpll_compute_fp(&crtc_state->dpll);
+	dpll = ironlake_compute_dpll(crtc, crtc_state, &fp);
 
-		crtc_state->dpll_hw_state.dpll = dpll;
-		crtc_state->dpll_hw_state.fp0 = fp;
-		crtc_state->dpll_hw_state.fp1 = fp;
+	crtc_state->dpll_hw_state.dpll = dpll;
+	crtc_state->dpll_hw_state.fp0 = fp;
+	crtc_state->dpll_hw_state.fp1 = fp;
 
-		pll = intel_get_shared_dpll(crtc, crtc_state, NULL);
-		if (pll == NULL) {
-			DRM_DEBUG_DRIVER("failed to find PLL for pipe %c\n",
-					 pipe_name(crtc->pipe));
-			return -EINVAL;
-		}
+	pll = intel_get_shared_dpll(crtc, crtc_state, NULL);
+	if (pll == NULL) {
+		DRM_DEBUG_DRIVER("failed to find PLL for pipe %c\n",
+				 pipe_name(crtc->pipe));
+		return -EINVAL;
 	}
 
-	crtc->lowfreq_avail = false;
-
 	return 0;
 }
 
-- 
2.4.3