[PATCH 17/18] drm/i915: Check infoframe state in intel_pipe_config_compare()

[Ville Syrjala]

From: Ville Syrjälä <ville.syrj...@linux.intel.com>

Check the infoframes and infoframe enable state when comparing two
crtc states.

We'll use the infoframe logging functions from video/hdmi.c to
show the infoframes as part of the state dump.

TODO: Try to better integrate the infoframe dumps with
      drm state dumps

v2: drm_printk() is no more

Signed-off-by: Ville Syrjälä <ville.syrj...@linux.intel.com>
---
 drivers/gpu/drm/i915/intel_display.c | 49 +++++++++++++++++++++++++++++++++++-
 1 file changed, 48 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/intel_display.c 
b/drivers/gpu/drm/i915/intel_display.c
index fbcc56caffb6..3dce49e36a05 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -11380,6 +11380,37 @@ intel_compare_link_m_n(const struct intel_link_m_n 
*m_n,
        return false;
 }
 
+static bool
+intel_compare_infoframe(const union hdmi_infoframe *a,
+                       const union hdmi_infoframe *b)
+{
+       return memcmp(a, b, sizeof(*a)) == 0;
+}
+
+static void
+pipe_config_infoframe_err(struct drm_i915_private *dev_priv,
+                         bool adjust, const char *name,
+                         const union hdmi_infoframe *a,
+                         const union hdmi_infoframe *b)
+{
+       if (adjust) {
+               if ((drm_debug & DRM_UT_KMS) == 0)
+                       return;
+
+               drm_dbg(DRM_UT_KMS, "mismatch in %s infoframe", name);
+               drm_dbg(DRM_UT_KMS, "expected:");
+               hdmi_infoframe_log(KERN_DEBUG, dev_priv->drm.dev, a);
+               drm_dbg(DRM_UT_KMS, "found");
+               hdmi_infoframe_log(KERN_DEBUG, dev_priv->drm.dev, b);
+       } else {
+               drm_err("mismatch in %s infoframe", name);
+               drm_err("expected:");
+               hdmi_infoframe_log(KERN_ERR, dev_priv->drm.dev, a);
+               drm_err("found");
+               hdmi_infoframe_log(KERN_ERR, dev_priv->drm.dev, b);
+       }
+}
+
 static void __printf(3, 4)
 pipe_config_err(bool adjust, const char *name, const char *format, ...)
 {
@@ -11541,7 +11572,17 @@ intel_pipe_config_compare(struct drm_i915_private 
*dev_priv,
        } \
 } while (0)
 
-#define PIPE_CONF_QUIRK(quirk) \
+#define PIPE_CONF_CHECK_INFOFRAME(name) do { \
+       if (!intel_compare_infoframe(&current_config->infoframes.name, \
+                                    &pipe_config->infoframes.name)) { \
+               pipe_config_infoframe_err(dev_priv, adjust, __stringify(name), \
+                                         &current_config->infoframes.name, \
+                                         &pipe_config->infoframes.name); \
+               ret = false; \
+       } \
+} while (0)
+
+#define PIPE_CONF_QUIRK(quirk) \
        ((current_config->quirks | pipe_config->quirks) & (quirk))
 
        PIPE_CONF_CHECK_I(cpu_transcoder);
@@ -11670,6 +11711,12 @@ intel_pipe_config_compare(struct drm_i915_private 
*dev_priv,
 
        PIPE_CONF_CHECK_I(min_voltage_level);
 
+       PIPE_CONF_CHECK_X(infoframes.enable);
+       PIPE_CONF_CHECK_X(infoframes.gcp);
+       PIPE_CONF_CHECK_INFOFRAME(avi);
+       PIPE_CONF_CHECK_INFOFRAME(spd);
+       PIPE_CONF_CHECK_INFOFRAME(hdmi);
+
 #undef PIPE_CONF_CHECK_X
 #undef PIPE_CONF_CHECK_I
 #undef PIPE_CONF_CHECK_BOOL
-- 
2.16.4

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