diff options
Diffstat (limited to 'target/linux/bcm27xx/patches-5.10/950-0476-drm-vc4-Add-connector-check-to-trigger-mode_change-w.patch')
| -rw-r--r-- | target/linux/bcm27xx/patches-5.10/950-0476-drm-vc4-Add-connector-check-to-trigger-mode_change-w.patch | 67 |
1 files changed, 67 insertions, 0 deletions
diff --git a/target/linux/bcm27xx/patches-5.10/950-0476-drm-vc4-Add-connector-check-to-trigger-mode_change-w.patch b/target/linux/bcm27xx/patches-5.10/950-0476-drm-vc4-Add-connector-check-to-trigger-mode_change-w.patch new file mode 100644 index 0000000000..7a200aca3d --- /dev/null +++ b/target/linux/bcm27xx/patches-5.10/950-0476-drm-vc4-Add-connector-check-to-trigger-mode_change-w.patch @@ -0,0 +1,67 @@ +From c8a76985213abda828a2098c3d6ce8a49b5f9766 Mon Sep 17 00:00:00 2001 +From: Dom Cobley <popcornmix@gmail.com> +Date: Fri, 5 Feb 2021 14:07:12 +0000 +Subject: [PATCH] drm/vc4: Add connector check to trigger mode_change + when hdr metadata changes + +Signed-off-by: Dom Cobley <popcornmix@gmail.com> +--- + drivers/gpu/drm/vc4/vc4_hdmi.c | 40 ++++++++++++++++++++++++++++++++++ + 1 file changed, 40 insertions(+) + +--- a/drivers/gpu/drm/vc4/vc4_hdmi.c ++++ b/drivers/gpu/drm/vc4/vc4_hdmi.c +@@ -223,6 +223,45 @@ static int vc4_hdmi_connector_get_modes( + return ret; + } + ++static bool hdr_metadata_equal(const struct drm_connector_state *old_state, ++ const struct drm_connector_state *new_state) ++{ ++ struct drm_property_blob *old_blob = old_state->hdr_output_metadata; ++ struct drm_property_blob *new_blob = new_state->hdr_output_metadata; ++ ++ if (!old_blob || !new_blob) ++ return old_blob == new_blob; ++ ++ if (old_blob->length != new_blob->length) ++ return false; ++ ++ return !memcmp(old_blob->data, new_blob->data, old_blob->length); ++} ++ ++static int vc4_hdmi_connector_atomic_check(struct drm_connector *connector, ++ struct drm_atomic_state *state) ++{ ++ struct drm_connector_state *old_state = ++ drm_atomic_get_old_connector_state(state, connector); ++ struct drm_connector_state *new_state = ++ drm_atomic_get_new_connector_state(state, connector); ++ struct drm_crtc *crtc = new_state->crtc; ++ struct drm_crtc_state *crtc_state; ++ ++ if (!crtc) ++ return 0; ++ ++ if (!hdr_metadata_equal(old_state, new_state)) { ++ crtc_state = drm_atomic_get_crtc_state(state, crtc); ++ if (IS_ERR(crtc_state)) ++ return PTR_ERR(crtc_state); ++ ++ crtc_state->mode_changed = true; ++ } ++ ++ return 0; ++} ++ + static void vc4_hdmi_connector_reset(struct drm_connector *connector) + { + struct vc4_hdmi_connector_state *old_state = +@@ -272,6 +311,7 @@ static const struct drm_connector_funcs + + static const struct drm_connector_helper_funcs vc4_hdmi_connector_helper_funcs = { + .get_modes = vc4_hdmi_connector_get_modes, ++ .atomic_check = vc4_hdmi_connector_atomic_check, + }; + + static int vc4_hdmi_connector_init(struct drm_device *dev, |