drm/i915: Remove I915_MAX_PIPES dependency for DDB allocation

Remove dependency for I915_MAX_PIPES by replacing it with
for_each_pipe() macro.

v2: use 'enum pipe pipe' instead of 'i'

Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Ramalingam C <ramalingam.c@intel.com>
Signed-off-by: Mika Kahola <mika.kahola@intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1507630626-23806-3-git-send-email-mika.kahola@intel.com

3 files changed, 13 insertions, 7 deletions

diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index cf13fba80d53..e03b0c3d6f9f 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -12215,7 +12215,10 @@ static void skl_update_crtcs(struct drm_atomic_state *state)
                         if (updated & cmask || !cstate->base.active)
                                 continue;
 
-                        if (skl_ddb_allocation_overlaps(entries, &cstate->wm.skl.ddb, i))
+                        if (skl_ddb_allocation_overlaps(dev_priv,
+                                                        entries,
+                                                        &cstate->wm.skl.ddb,
+                                                        i))
                                 continue;
 
                         updated |= cmask;
diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
index 0cab667fff57..ceb3b8284c86 100644
--- a/drivers/gpu/drm/i915/intel_drv.h
+++ b/drivers/gpu/drm/i915/intel_drv.h
@@ -1893,7 +1893,8 @@ int intel_enable_sagv(struct drm_i915_private *dev_priv);
 int intel_disable_sagv(struct drm_i915_private *dev_priv);
 bool skl_wm_level_equals(const struct skl_wm_level *l1,
                          const struct skl_wm_level *l2);
-bool skl_ddb_allocation_overlaps(const struct skl_ddb_entry **entries,
+bool skl_ddb_allocation_overlaps(struct drm_i915_private *dev_priv,
+                                 const struct skl_ddb_entry **entries,
                                  const struct skl_ddb_entry *ddb,
                                  int ignore);
 bool ilk_disable_lp_wm(struct drm_device *dev);
diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
index 9d0ca2656a23..39acfadb5a21 100644
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -4820,16 +4820,18 @@ static inline bool skl_ddb_entries_overlap(const struct skl_ddb_entry *a,
         return a->start < b->end && b->start < a->end;
 }
 
-bool skl_ddb_allocation_overlaps(const struct skl_ddb_entry **entries,
+bool skl_ddb_allocation_overlaps(struct drm_i915_private *dev_priv,
+                                 const struct skl_ddb_entry **entries,
                                  const struct skl_ddb_entry *ddb,
                                  int ignore)
 {
-        int i;
+        enum pipe pipe;
 
-        for (i = 0; i < I915_MAX_PIPES; i++)
-                if (i != ignore && entries[i] &&
-                    skl_ddb_entries_overlap(ddb, entries[i]))
+        for_each_pipe(dev_priv, pipe) {
+                if (pipe != ignore && entries[pipe] &&
+                    skl_ddb_entries_overlap(ddb, entries[pipe]))
                         return true;
+        }
 
         return false;
 }