drm/i915: Add dpll entrypoint for dumping hw state

Remove the IS_PLATFORM() macros from intel_dump_pipe_config() and split
that logic in platform specific implementations inside the dpll code,
accessed through a platform independent interface.

v2: Rebase.
Signed-off-by: Ander Conselvan de Oliveira <ander.conselvan.de.oliveira@intel.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch> (v1)
Link: http://patchwork.freedesktop.org/patch/msgid/1483024933-3726-7-git-send-email-ander.conselvan.de.oliveira@intel.com

3 files changed, 83 insertions, 33 deletions

diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index c056631228c0..fba9734d14aa 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -12824,39 +12824,7 @@ static void intel_dump_pipe_config(struct intel_crtc *crtc,
         DRM_DEBUG_KMS("ips: %i, double wide: %i\n",
                       pipe_config->ips_enabled, pipe_config->double_wide);
 
-        if (IS_GEN9_LP(dev_priv)) {
-                DRM_DEBUG_KMS("dpll_hw_state: ebb0: 0x%x, ebb4: 0x%x,"
-                              "pll0: 0x%x, pll1: 0x%x, pll2: 0x%x, pll3: 0x%x, "
-                              "pll6: 0x%x, pll8: 0x%x, pll9: 0x%x, pll10: 0x%x, pcsdw12: 0x%x\n",
-                              pipe_config->dpll_hw_state.ebb0,
-                              pipe_config->dpll_hw_state.ebb4,
-                              pipe_config->dpll_hw_state.pll0,
-                              pipe_config->dpll_hw_state.pll1,
-                              pipe_config->dpll_hw_state.pll2,
-                              pipe_config->dpll_hw_state.pll3,
-                              pipe_config->dpll_hw_state.pll6,
-                              pipe_config->dpll_hw_state.pll8,
-                              pipe_config->dpll_hw_state.pll9,
-                              pipe_config->dpll_hw_state.pll10,
-                              pipe_config->dpll_hw_state.pcsdw12);
-        } else if (IS_SKYLAKE(dev_priv) || IS_KABYLAKE(dev_priv)) {
-                DRM_DEBUG_KMS("dpll_hw_state: "
-                              "ctrl1: 0x%x, cfgcr1: 0x%x, cfgcr2: 0x%x\n",
-                              pipe_config->dpll_hw_state.ctrl1,
-                              pipe_config->dpll_hw_state.cfgcr1,
-                              pipe_config->dpll_hw_state.cfgcr2);
-        } else if (HAS_DDI(dev_priv)) {
-                DRM_DEBUG_KMS("dpll_hw_state: wrpll: 0x%x spll: 0x%x\n",
-                              pipe_config->dpll_hw_state.wrpll,
-                              pipe_config->dpll_hw_state.spll);
-        } else {
-                DRM_DEBUG_KMS("dpll_hw_state: dpll: 0x%x, dpll_md: 0x%x, "
-                              "fp0: 0x%x, fp1: 0x%x\n",
-                              pipe_config->dpll_hw_state.dpll,
-                              pipe_config->dpll_hw_state.dpll_md,
-                              pipe_config->dpll_hw_state.fp0,
-                              pipe_config->dpll_hw_state.fp1);
-        }
+        intel_dpll_dump_hw_state(dev_priv, &pipe_config->dpll_hw_state);
 
         DRM_DEBUG_KMS("planes on this crtc\n");
         list_for_each_entry(plane, &dev->mode_config.plane_list, head) {
diff --git a/drivers/gpu/drm/i915/intel_dpll_mgr.c b/drivers/gpu/drm/i915/intel_dpll_mgr.c
index 44c3c7056f3f..57d4271cba2c 100644
--- a/drivers/gpu/drm/i915/intel_dpll_mgr.c
+++ b/drivers/gpu/drm/i915/intel_dpll_mgr.c
@@ -452,6 +452,17 @@ ibx_get_dpll(struct intel_crtc *crtc, struct intel_crtc_state *crtc_state,
         return pll;
 }
 
+static void ibx_dump_hw_state(struct drm_i915_private *dev_priv,
+                              struct intel_dpll_hw_state *hw_state)
+{
+        DRM_DEBUG_KMS("dpll_hw_state: dpll: 0x%x, dpll_md: 0x%x, "
+                      "fp0: 0x%x, fp1: 0x%x\n",
+                      hw_state->dpll,
+                      hw_state->dpll_md,
+                      hw_state->fp0,
+                      hw_state->fp1);
+}
+
 static const struct intel_shared_dpll_funcs ibx_pch_dpll_funcs = {
         .prepare = ibx_pch_dpll_prepare,
         .enable = ibx_pch_dpll_enable,
@@ -838,6 +849,13 @@ hsw_get_dpll(struct intel_crtc *crtc, struct intel_crtc_state *crtc_state,
         return pll;
 }
 
+static void hsw_dump_hw_state(struct drm_i915_private *dev_priv,
+                              struct intel_dpll_hw_state *hw_state)
+{
+        DRM_DEBUG_KMS("dpll_hw_state: wrpll: 0x%x spll: 0x%x\n",
+                      hw_state->wrpll, hw_state->spll);
+}
+
 static const struct intel_shared_dpll_funcs hsw_ddi_wrpll_funcs = {
         .enable = hsw_ddi_wrpll_enable,
         .disable = hsw_ddi_wrpll_disable,
@@ -1393,6 +1411,16 @@ skl_get_dpll(struct intel_crtc *crtc, struct intel_crtc_state *crtc_state,
         return pll;
 }
 
+static void skl_dump_hw_state(struct drm_i915_private *dev_priv,
+                              struct intel_dpll_hw_state *hw_state)
+{
+        DRM_DEBUG_KMS("dpll_hw_state: "
+                      "ctrl1: 0x%x, cfgcr1: 0x%x, cfgcr2: 0x%x\n",
+                      hw_state->ctrl1,
+                      hw_state->cfgcr1,
+                      hw_state->cfgcr2);
+}
+
 static const struct intel_shared_dpll_funcs skl_ddi_pll_funcs = {
         .enable = skl_ddi_pll_enable,
         .disable = skl_ddi_pll_disable,
@@ -1824,6 +1852,25 @@ bxt_get_dpll(struct intel_crtc *crtc,
         return pll;
 }
 
+static void bxt_dump_hw_state(struct drm_i915_private *dev_priv,
+                              struct intel_dpll_hw_state *hw_state)
+{
+        DRM_DEBUG_KMS("dpll_hw_state: ebb0: 0x%x, ebb4: 0x%x,"
+                      "pll0: 0x%x, pll1: 0x%x, pll2: 0x%x, pll3: 0x%x, "
+                      "pll6: 0x%x, pll8: 0x%x, pll9: 0x%x, pll10: 0x%x, pcsdw12: 0x%x\n",
+                      hw_state->ebb0,
+                      hw_state->ebb4,
+                      hw_state->pll0,
+                      hw_state->pll1,
+                      hw_state->pll2,
+                      hw_state->pll3,
+                      hw_state->pll6,
+                      hw_state->pll8,
+                      hw_state->pll9,
+                      hw_state->pll10,
+                      hw_state->pcsdw12);
+}
+
 static const struct intel_shared_dpll_funcs bxt_ddi_pll_funcs = {
         .enable = bxt_ddi_pll_enable,
         .disable = bxt_ddi_pll_disable,
@@ -1864,6 +1911,9 @@ struct intel_dpll_mgr {
         struct intel_shared_dpll *(*get_dpll)(struct intel_crtc *crtc,
                                               struct intel_crtc_state *crtc_state,
                                               struct intel_encoder *encoder);
+
+        void (*dump_hw_state)(struct drm_i915_private *dev_priv,
+                              struct intel_dpll_hw_state *hw_state);
 };
 
 static const struct dpll_info pch_plls[] = {
@@ -1875,6 +1925,7 @@ static const struct dpll_info pch_plls[] = {
 static const struct intel_dpll_mgr pch_pll_mgr = {
         .dpll_info = pch_plls,
         .get_dpll = ibx_get_dpll,
+        .dump_hw_state = ibx_dump_hw_state,
 };
 
 static const struct dpll_info hsw_plls[] = {
@@ -1890,6 +1941,7 @@ static const struct dpll_info hsw_plls[] = {
 static const struct intel_dpll_mgr hsw_pll_mgr = {
         .dpll_info = hsw_plls,
         .get_dpll = hsw_get_dpll,
+        .dump_hw_state = hsw_dump_hw_state,
 };
 
 static const struct dpll_info skl_plls[] = {
@@ -1903,6 +1955,7 @@ static const struct dpll_info skl_plls[] = {
 static const struct intel_dpll_mgr skl_pll_mgr = {
         .dpll_info = skl_plls,
         .get_dpll = skl_get_dpll,
+        .dump_hw_state = skl_dump_hw_state,
 };
 
 static const struct dpll_info bxt_plls[] = {
@@ -1915,6 +1968,7 @@ static const struct dpll_info bxt_plls[] = {
 static const struct intel_dpll_mgr bxt_pll_mgr = {
         .dpll_info = bxt_plls,
         .get_dpll = bxt_get_dpll,
+        .dump_hw_state = bxt_dump_hw_state,
 };
 
 /**
@@ -2014,3 +2068,28 @@ void intel_release_shared_dpll(struct intel_shared_dpll *dpll,
         shared_dpll_state = intel_atomic_get_shared_dpll_state(state);
         shared_dpll_state[dpll->id].crtc_mask &= ~(1 << crtc->pipe);
 }
+
+/**
+ * intel_shared_dpll_dump_hw_state - write hw_state to dmesg
+ * @dev_priv: i915 drm device
+ * @hw_state: hw state to be written to the log
+ *
+ * Write the relevant values in @hw_state to dmesg using DRM_DEBUG_KMS.
+ */
+void intel_dpll_dump_hw_state(struct drm_i915_private *dev_priv,
+                              struct intel_dpll_hw_state *hw_state)
+{
+        if (dev_priv->dpll_mgr) {
+                dev_priv->dpll_mgr->dump_hw_state(dev_priv, hw_state);
+        } else {
+                /* fallback for platforms that don't use the shared dpll
+                 * infrastructure
+                 */
+                DRM_DEBUG_KMS("dpll_hw_state: dpll: 0x%x, dpll_md: 0x%x, "
+                              "fp0: 0x%x, fp1: 0x%x\n",
+                              hw_state->dpll,
+                              hw_state->dpll_md,
+                              hw_state->fp0,
+                              hw_state->fp1);
+        }
+}
diff --git a/drivers/gpu/drm/i915/intel_dpll_mgr.h b/drivers/gpu/drm/i915/intel_dpll_mgr.h
index db96eea00298..af1497eb4f9c 100644
--- a/drivers/gpu/drm/i915/intel_dpll_mgr.h
+++ b/drivers/gpu/drm/i915/intel_dpll_mgr.h
@@ -279,6 +279,9 @@ void intel_disable_shared_dpll(struct intel_crtc *crtc);
 void intel_shared_dpll_swap_state(struct drm_atomic_state *state);
 void intel_shared_dpll_init(struct drm_device *dev);
 
+void intel_dpll_dump_hw_state(struct drm_i915_private *dev_priv,
+                              struct intel_dpll_hw_state *hw_state);
+
 /* BXT dpll related functions */
 bool bxt_ddi_dp_set_dpll_hw_state(int clock,
                           struct intel_dpll_hw_state *dpll_hw_state);