[PATCH 6/7] drm/i915: Add dpll entrypoint for dumping hw state

Ander Conselvan de Oliveira
2016-10-04T12:32:36Z

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.

Signed-off-by: Ander Conselvan de Oliveira <ander.conselvan.de.oliveira@intel.com>
---
drivers/gpu/drm/i915/intel_display.c | 35 +---------------
drivers/gpu/drm/i915/intel_dpll_mgr.c | 79 +++++++++++++++++++++++++++++++++++
drivers/gpu/drm/i915/intel_dpll_mgr.h | 3 ++
3 files changed, 84 insertions(+), 33 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index e6fe85b..8ecaf18 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -12744,6 +12744,7 @@ static void intel_dump_pipe_config(struct intel_crtc *crtc,
const char *context)
{
struct drm_device *dev = crtc->base.dev;
+ struct drm_i915_private *dev_priv = to_i915(dev);
struct drm_plane *plane;
struct intel_plane *intel_plane;
struct intel_plane_state *state;
@@ -12805,39 +12806,7 @@ static void intel_dump_pipe_config(struct intel_crtc *crtc,
DRM_DEBUG_KMS("ips: %i\n", pipe_config->ips_enabled);
DRM_DEBUG_KMS("double wide: %i\n", pipe_config->double_wide);

- if (IS_BROXTON(dev)) {
- 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) || IS_KABYLAKE(dev)) {
- 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)) {
- 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 8c4efa9..9b02d9c 100644
--- a/drivers/gpu/drm/i915/intel_dpll_mgr.c
+++ b/drivers/gpu/drm/i915/intel_dpll_mgr.c
@@ -447,6 +447,17 @@ 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,
@@ -833,6 +844,13 @@ 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,
@@ -1388,6 +1406,16 @@ 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,
@@ -1785,6 +1813,25 @@ 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,
@@ -1825,6 +1872,9 @@ 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[] = {
@@ -1836,6 +1886,7 @@ 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[] = {
@@ -1851,6 +1902,7 @@ 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[] = {
@@ -1864,6 +1916,7 @@ 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[] = {
@@ -1876,6 +1929,7 @@ 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,
};

/**
@@ -1975,3 +2029,28 @@ 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 40f1a6f..76111a4 100644
--- a/drivers/gpu/drm/i915/intel_dpll_mgr.h
+++ b/drivers/gpu/drm/i915/intel_dpll_mgr.h
@@ -280,6 +280,9 @@ 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);
--
2.5.5