diff options
| -rw-r--r-- | drivers/gpu/drm/i915/intel_pm.c | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c index 936c1628075..8358d73ae46 100644 --- a/drivers/gpu/drm/i915/intel_pm.c +++ b/drivers/gpu/drm/i915/intel_pm.c @@ -2409,6 +2409,39 @@ static void intel_fixup_cur_wm_latency(struct drm_device *dev, uint16_t wm[5]) wm[3] *= 2; } +static void intel_print_wm_latency(struct drm_device *dev, + const char *name, + const uint16_t wm[5]) +{ + int level, max_level; + + /* how many WM levels are we expecting */ + if (IS_HASWELL(dev)) + max_level = 4; + else if (INTEL_INFO(dev)->gen >= 6) + max_level = 3; + else + max_level = 2; + + for (level = 0; level <= max_level; level++) { + unsigned int latency = wm[level]; + + if (latency == 0) { + DRM_ERROR("%s WM%d latency not provided\n", + name, level); + continue; + } + + /* WM1+ latency values in 0.5us units */ + if (level > 0) + latency *= 5; + + DRM_DEBUG_KMS("%s WM%d latency %u (%u.%u usec)\n", + name, level, wm[level], + latency / 10, latency % 10); + } +} + static void intel_setup_wm_latency(struct drm_device *dev) { struct drm_i915_private *dev_priv = dev->dev_private; @@ -2422,6 +2455,10 @@ static void intel_setup_wm_latency(struct drm_device *dev) intel_fixup_spr_wm_latency(dev, dev_priv->wm.spr_latency); intel_fixup_cur_wm_latency(dev, dev_priv->wm.cur_latency); + + intel_print_wm_latency(dev, "Primary", dev_priv->wm.pri_latency); + intel_print_wm_latency(dev, "Sprite", dev_priv->wm.spr_latency); + intel_print_wm_latency(dev, "Cursor", dev_priv->wm.cur_latency); } static void hsw_compute_wm_parameters(struct drm_device *dev, |