[Intel-gfx] [PATCH 1/2] drm/i915/dp: Make bxt_ddi_pll_select non-static

[Durgadoss R]

Make bxt_ddi_pll_select non-static so that it can
be called from other files also. The subsequent
patches need this from display.c.

The call to 'intel_get_shared_pll' is not required
if there is already a valid PLL. This patch adds
a boolean argument to by-pass this case.

Signed-off-by: Durgadoss R <durgadoss.r at intel.com>
---
 drivers/gpu/drm/i915/intel_ddi.c | 11 +++++++----
 drivers/gpu/drm/i915/intel_drv.h |  4 ++++
 2 files changed, 11 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_ddi.c b/drivers/gpu/drm/i915/intel_ddi.c
index 4823184..5326d60 100644
--- a/drivers/gpu/drm/i915/intel_ddi.c
+++ b/drivers/gpu/drm/i915/intel_ddi.c
@@ -1612,10 +1612,9 @@ static const struct bxt_clk_div bxt_dp_clk_val[] = {
 	{432000, 3, 1, 32, 1677722, 1, 1}
 };
 
-static bool
-bxt_ddi_pll_select(struct intel_crtc *intel_crtc,
+bool bxt_ddi_pll_select(struct intel_crtc *intel_crtc,
 		   struct intel_crtc_state *crtc_state,
-		   struct intel_encoder *intel_encoder)
+		   struct intel_encoder *intel_encoder, bool find_pll)
 {
 	struct intel_shared_dpll *pll;
 	struct bxt_clk_div clk_div = {0};
@@ -1724,6 +1723,9 @@ bxt_ddi_pll_select(struct intel_crtc *intel_crtc,
 	crtc_state->dpll_hw_state.pcsdw12 =
 		LANESTAGGER_STRAP_OVRD | lanestagger;
 
+	if (!find_pll)
+		goto exit;
+
 	pll = intel_get_shared_dpll(intel_crtc, crtc_state);
 	if (pll == NULL) {
 		DRM_DEBUG_DRIVER("failed to find PLL for pipe %c\n",
@@ -1734,6 +1736,7 @@ bxt_ddi_pll_select(struct intel_crtc *intel_crtc,
 	/* shared DPLL id 0 is DPLL A */
 	crtc_state->ddi_pll_sel = pll->id;
 
+exit:
 	return true;
 }
 
@@ -1756,7 +1759,7 @@ bool intel_ddi_pll_select(struct intel_crtc *intel_crtc,
 					  intel_encoder);
 	else if (IS_BROXTON(dev))
 		return bxt_ddi_pll_select(intel_crtc, crtc_state,
-					  intel_encoder);
+					  intel_encoder, true);
 	else
 		return hsw_ddi_pll_select(intel_crtc, crtc_state,
 					  intel_encoder);
diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
index 46484e4..30f91cf 100644
--- a/drivers/gpu/drm/i915/intel_drv.h
+++ b/drivers/gpu/drm/i915/intel_drv.h
@@ -1130,6 +1130,10 @@ void broxton_init_cdclk(struct drm_device *dev);
 void broxton_uninit_cdclk(struct drm_device *dev);
 void broxton_ddi_phy_init(struct drm_device *dev);
 void broxton_ddi_phy_uninit(struct drm_device *dev);
+bool bxt_ddi_pll_select(struct intel_crtc *intel_crtc,
+		   struct intel_crtc_state *crtc_state,
+		   struct intel_encoder *intel_encoder,
+		   bool find_pll);
 void bxt_enable_dc9(struct drm_i915_private *dev_priv);
 void bxt_disable_dc9(struct drm_i915_private *dev_priv);
 void skl_init_cdclk(struct drm_i915_private *dev_priv);
-- 
1.9.1