Commit ff5f9ae9 authored by Dmitry Baryshkov's avatar Dmitry Baryshkov
Browse files

drm/bridge_connector: implement oob_hotplug_event 



Implement the oob_hotplug_event() callback. Translate it to the HPD
notification sent to the HPD bridge in the chain.

Reviewed-by: default avatarJanne Grunau <j@jannau.net>
Link: https://lore.kernel.org/r/20231009174048.2695981-4-dmitry.baryshkov@linaro.org


Signed-off-by: default avatarDmitry Baryshkov <dmitry.baryshkov@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20231009174048.2695981-4-dmitry.baryshkov@linaro.org
parent 6ec2cf81

drivers/gpu/drm/drm_bridge_connector.c

+28 −3
Original line number Diff line number Diff line
@@ -5,6 +5,8 @@ 


#include <linux/kernel.h>

#include <linux/module.h>

#include <linux/of.h>

#include <linux/property.h>

#include <linux/slab.h>



#include <drm/drm_atomic_state_helper.h>
@@ -107,10 +109,9 @@ static void drm_bridge_connector_hpd_notify(struct drm_connector *connector, 
	}

}



static void drm_bridge_connector_hpd_cb(void *cb_data,

static void drm_bridge_connector_handle_hpd(struct drm_bridge_connector *drm_bridge_connector,

					    enum drm_connector_status status)

{

	struct drm_bridge_connector *drm_bridge_connector = cb_data;

	struct drm_connector *connector = &drm_bridge_connector->base;

	struct drm_device *dev = connector->dev;
@@ -123,6 +124,21 @@ static void drm_bridge_connector_hpd_cb(void *cb_data, 
	drm_kms_helper_connector_hotplug_event(connector);

}



static void drm_bridge_connector_hpd_cb(void *cb_data,

					enum drm_connector_status status)

{

	drm_bridge_connector_handle_hpd(cb_data, status);

}



static void drm_bridge_connector_oob_hotplug_event(struct drm_connector *connector,

						   enum drm_connector_status status)

{

	struct drm_bridge_connector *bridge_connector =

		to_drm_bridge_connector(connector);



	drm_bridge_connector_handle_hpd(bridge_connector, status);

}



static void drm_bridge_connector_enable_hpd(struct drm_connector *connector)

{

	struct drm_bridge_connector *bridge_connector =
@@ -191,6 +207,8 @@ static void drm_bridge_connector_destroy(struct drm_connector *connector) 
	drm_connector_unregister(connector);

	drm_connector_cleanup(connector);



	fwnode_handle_put(connector->fwnode);



	kfree(bridge_connector);

}
@@ -216,6 +234,7 @@ static const struct drm_connector_funcs drm_bridge_connector_funcs = { 
	.atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,

	.atomic_destroy_state = drm_atomic_helper_connector_destroy_state,

	.debugfs_init = drm_bridge_connector_debugfs_init,

	.oob_hotplug_event = drm_bridge_connector_oob_hotplug_event,

};



/* -----------------------------------------------------------------------------
@@ -352,6 +371,12 @@ struct drm_connector *drm_bridge_connector_init(struct drm_device *drm, 
		if (!drm_bridge_get_next_bridge(bridge))

			connector_type = bridge->type;



#ifdef CONFIG_OF

		if (!drm_bridge_get_next_bridge(bridge) &&

		    bridge->of_node)

			connector->fwnode = fwnode_handle_get(of_fwnode_handle(bridge->of_node));

#endif



		if (bridge->ddc)

			ddc = bridge->ddc;