drm/i915/cx0: Add .compare_hw_state hook

Add .compare_hw_state function pointer for MTL+ platforms
to support dpll framework.

Signed-off-by: Mika Kahola <mika.kahola@intel.com>
Reviewed-by: Suraj Kandpal <suraj.kandpal@intel.com>
Link: https://lore.kernel.org/r/20251117104602.2363671-25-mika.kahola@intel.com

diff --git a/drivers/gpu/drm/i915/display/intel_dpll_mgr.c b/drivers/gpu/drm/i915/display/intel_dpll_mgr.c
index aee8f1a5848a9510ce39f53243fc5295fbe81a81..c0ba269dc714d0b02a2c0a93f26d1e929f044565 100644 (file)
--- a/drivers/gpu/drm/i915/display/intel_dpll_mgr.c
+++ b/drivers/gpu/drm/i915/display/intel_dpll_mgr.c
@@ -4449,6 +4449,15 @@ static void mtl_dump_hw_state(struct drm_printer *p,
        intel_cx0pll_dump_hw_state(p, &dpll_hw_state->cx0pll);
 }
 
+static bool mtl_compare_hw_state(const struct intel_dpll_hw_state *_a,
+                                const struct intel_dpll_hw_state *_b)
+{
+       const struct intel_cx0pll_state *a = &_a->cx0pll;
+       const struct intel_cx0pll_state *b = &_b->cx0pll;
+
+       return intel_cx0pll_compare_hw_state(a, b);
+}
+
 __maybe_unused
 static const struct intel_dpll_mgr mtl_pll_mgr = {
        .dpll_info = mtl_plls,
@@ -4458,6 +4467,7 @@ static const struct intel_dpll_mgr mtl_pll_mgr = {
        .update_active_dpll = icl_update_active_dpll,
        .update_ref_clks = icl_update_dpll_ref_clks,
        .dump_hw_state = mtl_dump_hw_state,
+       .compare_hw_state = mtl_compare_hw_state,
 };
 
 /**