[PATCH 2/9] drm/i915/display: create a common function to check validity of ELD

[Vinod Govindapillai]

We would need to check the validity of connector ELD from multiple
places in the follow up patches. So create a separate function to
check the validity for ELD.

Signed-off-by: Vinod Govindapillai <vinod.govindapil...@intel.com>
---
 drivers/gpu/drm/i915/display/intel_audio.c | 18 ++++++++++++++----
 1 file changed, 14 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/i915/display/intel_audio.c 
b/drivers/gpu/drm/i915/display/intel_audio.c
index 1afd3b99e3ea..6946f3b0f8c9 100644
--- a/drivers/gpu/drm/i915/display/intel_audio.c
+++ b/drivers/gpu/drm/i915/display/intel_audio.c
@@ -690,13 +690,10 @@ void intel_audio_sdp_split_update(const struct 
intel_crtc_state *crtc_state)
                             crtc_state->sdp_split_enable ? 
AUD_ENABLE_SDP_SPLIT : 0);
 }
 
-bool intel_audio_compute_config(struct intel_crtc_state *crtc_state,
-                               struct drm_connector_state *conn_state)
+static bool intel_audio_eld_valid(struct drm_connector_state *conn_state)
 {
        struct drm_connector *connector = conn_state->connector;
        struct drm_i915_private *i915 = to_i915(connector->dev);
-       const struct drm_display_mode *adjusted_mode =
-               &crtc_state->hw.adjusted_mode;
 
        if (!connector->eld[0]) {
                drm_dbg_kms(&i915->drm,
@@ -705,6 +702,19 @@ bool intel_audio_compute_config(struct intel_crtc_state 
*crtc_state,
                return false;
        }
 
+       return true;
+}
+
+bool intel_audio_compute_config(struct intel_crtc_state *crtc_state,
+                               struct drm_connector_state *conn_state)
+{
+       struct drm_connector *connector = conn_state->connector;
+       const struct drm_display_mode *adjusted_mode =
+               &crtc_state->hw.adjusted_mode;
+
+       if (!intel_audio_eld_valid(conn_state))
+               return false;
+
        BUILD_BUG_ON(sizeof(crtc_state->eld) != sizeof(connector->eld));
        memcpy(crtc_state->eld, connector->eld, sizeof(crtc_state->eld));
 
-- 
2.34.1