[PATCH v3 2/4] drm/bridge-connector: Switch to using ->detect_ctx hook
From: Cristian Ciocaltea <hidden>
Date: 2026-01-19 13:26:02
Also in:
dri-devel, linux-rockchip, lkml
Subsystem:
drm drivers, drm drivers and misc gpu patches, drm drivers for bridge chips, the rest · Maintainers:
David Airlie, Simona Vetter, Maarten Lankhorst, Maxime Ripard, Thomas Zimmermann, Andrzej Hajda, Neil Armstrong, Robert Foss, Linus Torvalds
In preparation to allow bridge drivers relying on the HDMI connector framework to provide HDMI 2.0 support, make use of the atomic version of drm_connector_funcs.detect() hook and invoke the newly introduced drm_bridge_detect_ctx() helper. In particular, this is going to be used for triggering an empty modeset in drm_bridge_funcs.detect_ctx() callback, in order to manage SCDC status lost on sink disconnects. Tested-by: Diederik de Haas <redacted> Tested-by: Maud Spierings <redacted> Signed-off-by: Cristian Ciocaltea <redacted> --- drivers/gpu/drm/display/drm_bridge_connector.c | 73 ++++++++++++++------------ 1 file changed, 38 insertions(+), 35 deletions(-)
diff --git a/drivers/gpu/drm/display/drm_bridge_connector.c b/drivers/gpu/drm/display/drm_bridge_connector.c
index ba8ff113cff1..2bd835c53b65 100644
--- a/drivers/gpu/drm/display/drm_bridge_connector.c
+++ b/drivers/gpu/drm/display/drm_bridge_connector.c@@ -208,39 +208,6 @@ static void drm_bridge_connector_disable_hpd(struct drm_connector *connector) * Bridge Connector Functions */ -static enum drm_connector_status -drm_bridge_connector_detect(struct drm_connector *connector, bool force) -{ - struct drm_bridge_connector *bridge_connector = - to_drm_bridge_connector(connector); - struct drm_bridge *detect = bridge_connector->bridge_detect; - struct drm_bridge *hdmi = bridge_connector->bridge_hdmi; - enum drm_connector_status status; - - if (detect) { - status = detect->funcs->detect(detect, connector); - - if (hdmi) - drm_atomic_helper_connector_hdmi_hotplug(connector, status); - - drm_bridge_connector_hpd_notify(connector, status); - } else { - switch (connector->connector_type) { - case DRM_MODE_CONNECTOR_DPI: - case DRM_MODE_CONNECTOR_LVDS: - case DRM_MODE_CONNECTOR_DSI: - case DRM_MODE_CONNECTOR_eDP: - status = connector_status_connected; - break; - default: - status = connector_status_unknown; - break; - } - } - - return status; -} - static void drm_bridge_connector_force(struct drm_connector *connector) { struct drm_bridge_connector *bridge_connector =
@@ -278,7 +245,6 @@ static void drm_bridge_connector_reset(struct drm_connector *connector) static const struct drm_connector_funcs drm_bridge_connector_funcs = { .reset = drm_bridge_connector_reset, - .detect = drm_bridge_connector_detect, .force = drm_bridge_connector_force, .fill_modes = drm_helper_probe_single_connector_modes, .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
@@ -291,6 +257,42 @@ static const struct drm_connector_funcs drm_bridge_connector_funcs = { * Bridge Connector Helper Functions */ +static int drm_bridge_connector_detect_ctx(struct drm_connector *connector, + struct drm_modeset_acquire_ctx *ctx, + bool force) +{ + struct drm_bridge_connector *bridge_connector = + to_drm_bridge_connector(connector); + struct drm_bridge *detect = bridge_connector->bridge_detect; + struct drm_bridge *hdmi = bridge_connector->bridge_hdmi; + int ret; + + if (detect) { + ret = drm_bridge_detect_ctx(detect, connector, ctx); + if (ret < 0) + return ret; + + if (hdmi) + drm_atomic_helper_connector_hdmi_hotplug(connector, ret); + + drm_bridge_connector_hpd_notify(connector, ret); + } else { + switch (connector->connector_type) { + case DRM_MODE_CONNECTOR_DPI: + case DRM_MODE_CONNECTOR_LVDS: + case DRM_MODE_CONNECTOR_DSI: + case DRM_MODE_CONNECTOR_eDP: + ret = connector_status_connected; + break; + default: + ret = connector_status_unknown; + break; + } + } + + return ret; +} + static int drm_bridge_connector_get_modes_edid(struct drm_connector *connector, struct drm_bridge *bridge) {
@@ -298,7 +300,7 @@ static int drm_bridge_connector_get_modes_edid(struct drm_connector *connector, const struct drm_edid *drm_edid; int n; - status = drm_bridge_connector_detect(connector, false); + status = drm_bridge_connector_detect_ctx(connector, NULL, false); if (status != connector_status_connected) goto no_edid;
@@ -384,6 +386,7 @@ static int drm_bridge_connector_atomic_check(struct drm_connector *connector, static const struct drm_connector_helper_funcs drm_bridge_connector_helper_funcs = { .get_modes = drm_bridge_connector_get_modes, + .detect_ctx = drm_bridge_connector_detect_ctx, .mode_valid = drm_bridge_connector_mode_valid, .enable_hpd = drm_bridge_connector_enable_hpd, .disable_hpd = drm_bridge_connector_disable_hpd,
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2.52.0