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68 lines
2.1 KiB
Diff
68 lines
2.1 KiB
Diff
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From c8a76985213abda828a2098c3d6ce8a49b5f9766 Mon Sep 17 00:00:00 2001
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From: Dom Cobley <popcornmix@gmail.com>
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Date: Fri, 5 Feb 2021 14:07:12 +0000
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Subject: [PATCH] drm/vc4: Add connector check to trigger mode_change
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when hdr metadata changes
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Signed-off-by: Dom Cobley <popcornmix@gmail.com>
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---
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drivers/gpu/drm/vc4/vc4_hdmi.c | 40 ++++++++++++++++++++++++++++++++++
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1 file changed, 40 insertions(+)
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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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@@ -223,6 +223,45 @@ static int vc4_hdmi_connector_get_modes(
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return ret;
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}
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+static bool hdr_metadata_equal(const struct drm_connector_state *old_state,
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+ const struct drm_connector_state *new_state)
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+{
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+ struct drm_property_blob *old_blob = old_state->hdr_output_metadata;
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+ struct drm_property_blob *new_blob = new_state->hdr_output_metadata;
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+
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+ if (!old_blob || !new_blob)
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+ return old_blob == new_blob;
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+
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+ if (old_blob->length != new_blob->length)
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+ return false;
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+
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+ return !memcmp(old_blob->data, new_blob->data, old_blob->length);
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+}
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+
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+static int vc4_hdmi_connector_atomic_check(struct drm_connector *connector,
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+ struct drm_atomic_state *state)
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+{
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+ struct drm_connector_state *old_state =
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+ drm_atomic_get_old_connector_state(state, connector);
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+ struct drm_connector_state *new_state =
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+ drm_atomic_get_new_connector_state(state, connector);
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+ struct drm_crtc *crtc = new_state->crtc;
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+ struct drm_crtc_state *crtc_state;
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+
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+ if (!crtc)
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+ return 0;
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+
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+ if (!hdr_metadata_equal(old_state, new_state)) {
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+ crtc_state = drm_atomic_get_crtc_state(state, crtc);
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+ if (IS_ERR(crtc_state))
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+ return PTR_ERR(crtc_state);
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+
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+ crtc_state->mode_changed = true;
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+ }
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+
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+ return 0;
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+}
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+
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static void vc4_hdmi_connector_reset(struct drm_connector *connector)
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{
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struct vc4_hdmi_connector_state *old_state =
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@@ -272,6 +311,7 @@ static const struct drm_connector_funcs
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static const struct drm_connector_helper_funcs vc4_hdmi_connector_helper_funcs = {
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.get_modes = vc4_hdmi_connector_get_modes,
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+ .atomic_check = vc4_hdmi_connector_atomic_check,
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};
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static int vc4_hdmi_connector_init(struct drm_device *dev,
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