mirror of
https://github.com/Ysurac/openmptcprouter.git
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59 lines
2 KiB
Diff
59 lines
2 KiB
Diff
From d97a52cd8d922b5df8f8f7001bd1d9ad9c2f294d Mon Sep 17 00:00:00 2001
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From: Maxime Ripard <maxime@cerno.tech>
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Date: Fri, 25 Jun 2021 16:22:39 +0200
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Subject: [PATCH 477/552] drm/vc4: hdmi: Enable the scrambler on reconnection
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If we have a state already and disconnect/reconnect the display, the
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SCDC messages won't be sent again since we didn't go through a disable /
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enable cycle.
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In order to fix this, let's call the vc4_hdmi_enable_scrambling function
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in the detect callback if there is a mode and it needs the scrambler to
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be enabled.
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Fixes: 74465b84fa27 ("drm/vc4: hdmi: Enable the scrambler")
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Signed-off-by: Maxime Ripard <maxime@cerno.tech>
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---
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drivers/gpu/drm/vc4/vc4_hdmi.c | 10 +++++++++-
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1 file changed, 9 insertions(+), 1 deletion(-)
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diff --git a/drivers/gpu/drm/vc4/vc4_hdmi.c b/drivers/gpu/drm/vc4/vc4_hdmi.c
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index 66f60aa04725..11ba790968d0 100644
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--- a/drivers/gpu/drm/vc4/vc4_hdmi.c
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+++ b/drivers/gpu/drm/vc4/vc4_hdmi.c
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@@ -473,6 +473,8 @@ static void vc4_hdmi_cec_update_clk_div(struct vc4_hdmi *vc4_hdmi)
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static void vc4_hdmi_cec_update_clk_div(struct vc4_hdmi *vc4_hdmi) {}
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#endif
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+static void vc4_hdmi_enable_scrambling(struct drm_encoder *encoder);
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+
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static enum drm_connector_status
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vc4_hdmi_connector_detect(struct drm_connector *connector, bool force)
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{
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@@ -501,6 +503,8 @@ vc4_hdmi_connector_detect(struct drm_connector *connector, bool force)
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}
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}
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+ vc4_hdmi_enable_scrambling(&vc4_hdmi->encoder.base.base);
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+
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pm_runtime_put(&vc4_hdmi->pdev->dev);
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return connector_status_connected;
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}
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@@ -871,9 +875,13 @@ static bool vc4_hdmi_supports_scrambling(struct drm_encoder *encoder,
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static void vc4_hdmi_enable_scrambling(struct drm_encoder *encoder)
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{
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- struct drm_display_mode *mode = &encoder->crtc->state->adjusted_mode;
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+ struct drm_display_mode *mode;
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struct vc4_hdmi *vc4_hdmi = encoder_to_vc4_hdmi(encoder);
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+ if (!encoder->crtc || !encoder->crtc->state)
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+ return;
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+
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+ mode = &encoder->crtc->state->adjusted_mode;
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if (!vc4_hdmi_supports_scrambling(encoder, mode))
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return;
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--
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2.33.0
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