drm/i915: Extract skl_allocate_plane_ddb()

Replace some copy-pasta with a function.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220118092354.11631-6-ville.syrjala@linux.intel.com
Reviewed-by: Stanislav Lisovskiy <stanislav.lisovskiy@intel.com>

diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
index 6b607be..1179bf3 100644 (file)
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -5109,9 +5109,24 @@ struct skl_plane_ddb_iter {
        u16 start, size;
 };
 
+static u16
+skl_allocate_plane_ddb(struct skl_plane_ddb_iter *iter,
+                      const struct skl_wm_level *wm,
+                      u64 data_rate)
+{
+       u16 extra;
+
+       extra = min_t(u16, iter->size,
+                     DIV64_U64_ROUND_UP(iter->size * data_rate, iter->data_rate));
+       iter->size -= extra;
+       iter->data_rate -= data_rate;
+
+       return wm->min_ddb_alloc + extra;
+}
+
 static int
-skl_allocate_plane_ddb(struct intel_atomic_state *state,
-                      struct intel_crtc *crtc)
+skl_crtc_allocate_plane_ddb(struct intel_atomic_state *state,
+                           struct intel_crtc *crtc)
 {
        struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
        struct intel_crtc_state *crtc_state =
@@ -5196,8 +5211,6 @@ skl_allocate_plane_ddb(struct intel_atomic_state *state,
        for_each_plane_id_on_crtc(crtc, plane_id) {
                const struct skl_plane_wm *wm =
                        &crtc_state->wm.skl.optimal.planes[plane_id];
-               u64 data_rate;
-               u16 extra;
 
                if (plane_id == PLANE_CURSOR)
                        continue;
@@ -5209,22 +5222,16 @@ skl_allocate_plane_ddb(struct intel_atomic_state *state,
                if (iter.data_rate == 0)
                        break;
 
-               data_rate = crtc_state->plane_data_rate[plane_id];
-               extra = min_t(u16, iter.size,
-                             DIV64_U64_ROUND_UP(iter.size * data_rate, iter.data_rate));
-               iter.total[plane_id] = wm->wm[level].min_ddb_alloc + extra;
-               iter.size -= extra;
-               iter.data_rate -= data_rate;
+               iter.total[plane_id] =
+                       skl_allocate_plane_ddb(&iter, &wm->wm[level],
+                                              crtc_state->plane_data_rate[plane_id]);
 
                if (iter.data_rate == 0)
                        break;
 
-               data_rate = crtc_state->uv_plane_data_rate[plane_id];
-               extra = min_t(u16, iter.size,
-                             DIV64_U64_ROUND_UP(iter.size * data_rate, iter.data_rate));
-               iter.uv_total[plane_id] = wm->uv_wm[level].min_ddb_alloc + extra;
-               iter.size -= extra;
-               iter.data_rate -= data_rate;
+               iter.uv_total[plane_id] =
+                       skl_allocate_plane_ddb(&iter, &wm->uv_wm[level],
+                                              crtc_state->uv_plane_data_rate[plane_id]);
        }
        drm_WARN_ON(&dev_priv->drm, iter.size != 0 || iter.data_rate != 0);
 
@@ -6177,7 +6184,7 @@ skl_compute_ddb(struct intel_atomic_state *state)
 
        for_each_oldnew_intel_crtc_in_state(state, crtc, old_crtc_state,
                                            new_crtc_state, i) {
-               ret = skl_allocate_plane_ddb(state, crtc);
+               ret = skl_crtc_allocate_plane_ddb(state, crtc);
                if (ret)
                        return ret;