During readout_hw_state, whole pipe_config is built reading hw.
But rebuilding scaler state from hw requires,
- reading all planes and find its corresponding index in order to set
its bits in scaler_users
- reading cdclk and adjusted mode crtc clk in order to regenerate
min scaling ratios.
- some values directly from bspec
To simplify things, for now using sw scaler state as readout state.
Signed-off-by: Chandra Konduru <chandra.konduru@xxxxxxxxx>
---
drivers/gpu/drm/i915/intel_display.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 9c3c6b1..b1d7036 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -14292,7 +14292,10 @@ static void intel_modeset_readout_hw_state(struct drm_device *dev)
int i;
for_each_intel_crtc(dev, crtc) {
+ struct intel_crtc_scaler_state scaler_state;
+ scaler_state = crtc->config->scaler_state;
memset(crtc->config, 0, sizeof(*crtc->config));
+ crtc->config->scaler_state = scaler_state;
crtc->config->quirks |= PIPE_CONFIG_QUIRK_INHERITED_MODE;
--
1.7.9.5
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