drm/i915: Ensure panel is on during DPMS off
If the panel is already off, we'll need to turn VDD on to execute the (useless) DPMS off code. Yes, it would be better to just not do any of this, but correctness, and *then* performance. Signed-off-by: Keith Packard <keithp@keithp.com>
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bee7eb2da2
Коммит
245e270877
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@ -1073,6 +1073,7 @@ intel_dp_dpms(struct drm_encoder *encoder, int mode)
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uint32_t dp_reg = I915_READ(intel_dp->output_reg);
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if (mode != DRM_MODE_DPMS_ON) {
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ironlake_edp_panel_vdd_on(intel_dp);
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if (is_edp(intel_dp))
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ironlake_edp_backlight_off(dev);
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intel_dp_sink_dpms(intel_dp, mode);
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@ -1080,6 +1081,7 @@ intel_dp_dpms(struct drm_encoder *encoder, int mode)
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ironlake_edp_panel_off(dev);
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if (is_edp(intel_dp) && !is_pch_edp(intel_dp))
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ironlake_edp_pll_off(encoder);
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ironlake_edp_panel_vdd_off(intel_dp);
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} else {
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ironlake_edp_panel_vdd_on(intel_dp);
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intel_dp_sink_dpms(intel_dp, mode);
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