diff options
Diffstat (limited to 'drivers/gpu/drm/i915')
| -rw-r--r-- | drivers/gpu/drm/i915/display/intel_cdclk.c | 40 |
1 files changed, 37 insertions, 3 deletions
diff --git a/drivers/gpu/drm/i915/display/intel_cdclk.c b/drivers/gpu/drm/i915/display/intel_cdclk.c index 728263cf40e3..a5569f21811c 100644 --- a/drivers/gpu/drm/i915/display/intel_cdclk.c +++ b/drivers/gpu/drm/i915/display/intel_cdclk.c @@ -1951,6 +1951,25 @@ static bool intel_cdclk_can_crawl(struct drm_i915_private *dev_priv, a->ref == b->ref; } +static bool intel_cdclk_can_squash(struct drm_i915_private *dev_priv, + const struct intel_cdclk_config *a, + const struct intel_cdclk_config *b) +{ + /* + * FIXME should store a bit more state in intel_cdclk_config + * to differentiate squasher vs. cd2x divider properly. For + * the moment all platforms with squasher use a fixed cd2x + * divider. + */ + if (!has_cdclk_squasher(dev_priv)) + return false; + + return a->cdclk != b->cdclk && + a->vco != 0 && + a->vco == b->vco && + a->ref == b->ref; +} + /** * intel_cdclk_needs_modeset - Determine if changong between the CDCLK * configurations requires a modeset on all pipes @@ -1988,7 +2007,17 @@ static bool intel_cdclk_can_cd2x_update(struct drm_i915_private *dev_priv, if (DISPLAY_VER(dev_priv) < 10 && !IS_BROXTON(dev_priv)) return false; + /* + * FIXME should store a bit more state in intel_cdclk_config + * to differentiate squasher vs. cd2x divider properly. For + * the moment all platforms with squasher use a fixed cd2x + * divider. + */ + if (has_cdclk_squasher(dev_priv)) + return false; + return a->cdclk != b->cdclk && + a->vco != 0 && a->vco == b->vco && a->ref == b->ref; } @@ -2672,9 +2701,14 @@ int intel_modeset_calc_cdclk(struct intel_atomic_state *state) pipe = INVALID_PIPE; } - if (intel_cdclk_can_crawl(dev_priv, - &old_cdclk_state->actual, - &new_cdclk_state->actual)) { + if (intel_cdclk_can_squash(dev_priv, + &old_cdclk_state->actual, + &new_cdclk_state->actual)) { + drm_dbg_kms(&dev_priv->drm, + "Can change cdclk via squasher\n"); + } else if (intel_cdclk_can_crawl(dev_priv, + &old_cdclk_state->actual, + &new_cdclk_state->actual)) { drm_dbg_kms(&dev_priv->drm, "Can change cdclk via crawl\n"); } else if (pipe != INVALID_PIPE) { |