[Intel-gfx] [PATCH 2/3] drm/i915: abstract ddi being audio enabled

[libin . yang]

From: Libin Yang <libin.y...@intel.com>

Prepare for using the same code for judging ddi being audio enabled.
No functional changes.

Signed-off-by: Libin Yang <libin.y...@intel.com>
Signed-off-by: Dhinakaran Pandiyan <dhinakaran.pandi...@intel.com>
Reviewed-by: Lyude <cp...@redhat.com>
Signed-off-by: Rodrigo Vivi <rodrigo.v...@intel.com>
---
 drivers/gpu/drm/i915/intel_ddi.c | 20 +++++++++++++++-----
 drivers/gpu/drm/i915/intel_drv.h |  2 ++
 2 files changed, 17 insertions(+), 5 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_ddi.c b/drivers/gpu/drm/i915/intel_ddi.c
index 0d680da..e5410be 100644
--- a/drivers/gpu/drm/i915/intel_ddi.c
+++ b/drivers/gpu/drm/i915/intel_ddi.c
@@ -1950,6 +1950,19 @@ void intel_ddi_prepare_link_retrain(struct intel_dp 
*intel_dp)
        udelay(600);
 }
 
+bool intel_ddi_is_audio_enabled(struct drm_i915_private *dev_priv,
+                                struct intel_crtc *intel_crtc)
+{
+       u32 temp;
+
+       if (intel_display_power_is_enabled(dev_priv, POWER_DOMAIN_AUDIO)) {
+               temp = I915_READ(HSW_AUD_PIN_ELD_CP_VLD);
+               if (temp & AUDIO_OUTPUT_ENABLE(intel_crtc->pipe))
+                       return true;
+       }
+       return false;
+}
+
 void intel_ddi_get_config(struct intel_encoder *encoder,
                          struct intel_crtc_state *pipe_config)
 {
@@ -2015,11 +2028,8 @@ void intel_ddi_get_config(struct intel_encoder *encoder,
                break;
        }
 
-       if (intel_display_power_is_enabled(dev_priv, POWER_DOMAIN_AUDIO)) {
-               temp = I915_READ(HSW_AUD_PIN_ELD_CP_VLD);
-               if (temp & AUDIO_OUTPUT_ENABLE(intel_crtc->pipe))
-                       pipe_config->has_audio = true;
-       }
+       pipe_config->has_audio =
+               intel_ddi_is_audio_enabled(dev_priv, intel_crtc);
 
        if (encoder->type == INTEL_OUTPUT_EDP && dev_priv->vbt.edp.bpp &&
            pipe_config->pipe_bpp > dev_priv->vbt.edp.bpp) {
diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
index 9bbe5c5..9346660 100644
--- a/drivers/gpu/drm/i915/intel_drv.h
+++ b/drivers/gpu/drm/i915/intel_drv.h
@@ -1175,6 +1175,8 @@ bool intel_ddi_pll_select(struct intel_crtc *crtc,
 void intel_ddi_set_pipe_settings(struct drm_crtc *crtc);
 void intel_ddi_prepare_link_retrain(struct intel_dp *intel_dp);
 bool intel_ddi_connector_get_hw_state(struct intel_connector *intel_connector);
+bool intel_ddi_is_audio_enabled(struct drm_i915_private *dev_priv,
+                                struct intel_crtc *intel_crtc);
 void intel_ddi_get_config(struct intel_encoder *encoder,
                          struct intel_crtc_state *pipe_config);
 struct intel_encoder *
-- 
2.7.4

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