drm/i915: Pimp DPLL ref/unref debugs

We currently have a debug message in intel_reference_shared_dpll()
but no counterpart in intel_unreference_shared_dpll(). Add one.

Switch to the [CRTC:...] notation for the pipe name while at it.

v2: Use drm_dbg_kms() instead of drm_dbg() (Jani)

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220922191350.4303-1-ville.syrjala@linux.intel.com
Reviewed-by: Jani Nikula <jani.nikula@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 60b3277..cc5efac 100644 (file)
--- a/drivers/gpu/drm/i915/display/intel_dpll_mgr.c
+++ b/drivers/gpu/drm/i915/display/intel_dpll_mgr.c
@@ -384,20 +384,25 @@ intel_reference_shared_dpll(struct intel_atomic_state *state,
        if (shared_dpll[id].pipe_mask == 0)
                shared_dpll[id].hw_state = *pll_state;
 
-       drm_dbg(&i915->drm, "using %s for pipe %c\n", pll->info->name,
-               pipe_name(crtc->pipe));
-
        shared_dpll[id].pipe_mask |= BIT(crtc->pipe);
+
+       drm_dbg_kms(&i915->drm, "[CRTC:%d:%s] reserving %s\n",
+                   crtc->base.base.id, crtc->base.name, pll->info->name);
 }
 
 static void intel_unreference_shared_dpll(struct intel_atomic_state *state,
                                          const struct intel_crtc *crtc,
                                          const struct intel_shared_dpll *pll)
 {
+       struct drm_i915_private *i915 = to_i915(state->base.dev);
        struct intel_shared_dpll_state *shared_dpll;
 
        shared_dpll = intel_atomic_get_shared_dpll_state(&state->base);
+
        shared_dpll[pll->info->id].pipe_mask &= ~BIT(crtc->pipe);
+
+       drm_dbg_kms(&i915->drm, "[CRTC:%d:%s] releasing %s\n",
+                   crtc->base.base.id, crtc->base.name, pll->info->name);
 }
 
 static void intel_put_dpll(struct intel_atomic_state *state,