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drm/i915: Save the old CDCLK atomic state

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The old state will be needed by an upcoming patch to determine if the
commit increases or decreases CDCLK, so move the old state to the atomic
state (while keeping the new one in dev_priv). cdclk.logical and
cdclk.actual in the atomic state isn't used atm anywhere after the
atomic check phase, so this should be safe.

v2:
- Use swap() instead of opencoding it. (Ville)

Suggested-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Imre Deak <imre.deak@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190320135439.12201-2-imre.deak@intel.com
This commit is contained in:
Imre Deak
2019-03-20 15:54:37 +02:00
parent 905801fe72
commit 48d9f87ddd
3 changed files with 23 additions and 2 deletions
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4
drivers/gpu/drm/i915/intel_display.c
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@@ -13683,10 +13683,10 @@ static int intel_atomic_commit(struct drm_device *dev,
intel_state->min_voltage_level,
sizeof(intel_state->min_voltage_level));
dev_priv->active_crtcs = intel_state->active_crtcs;
dev_priv->cdclk.logical = intel_state->cdclk.logical;
dev_priv->cdclk.actual = intel_state->cdclk.actual;
dev_priv->cdclk.force_min_cdclk =
intel_state->cdclk.force_min_cdclk;
intel_cdclk_swap_state(intel_state);
}
drm_atomic_state_get(state);