Commit 14b3cdbd authored by Dmitry Baryshkov's avatar Dmitry Baryshkov Committed by Neil Armstrong
Browse files

drm/bridge: adv7511: make it honour next bridge in DT 



DT bindings for adv7511 and adv7533 bridges specify HDMI output to be
present at the port@1. This allows board DT to add e.g. HDMI connector
nodes or any other next chained bridge. Make adv7511 driver discover
that bridge and attach it to the chain.

Signed-off-by: default avatarDmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: default avatarNeil Armstrong <neil.armstrong@linaro.org>
Link: https://lore.kernel.org/r/20240331-adv7511-next-bridge-v2-1-7356d61dc7b2@linaro.org


Signed-off-by: default avatarNeil Armstrong <neil.armstrong@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20240331-adv7511-next-bridge-v2-1-7356d61dc7b2@linaro.org
parent 251e3c1f

drivers/gpu/drm/bridge/adv7511/adv7511.h

+1 −0
Original line number Diff line number Diff line
@@ -356,6 +356,7 @@ struct adv7511 { 
	enum drm_connector_status status;

	bool powered;



	struct drm_bridge *next_bridge;

	struct drm_display_mode curr_mode;



	unsigned int f_tmds;

drivers/gpu/drm/bridge/adv7511/adv7511_drv.c

+12 −0
Original line number Diff line number Diff line
@@ -17,6 +17,7 @@ 
#include <drm/drm_atomic.h>

#include <drm/drm_atomic_helper.h>

#include <drm/drm_edid.h>

#include <drm/drm_of.h>

#include <drm/drm_print.h>

#include <drm/drm_probe_helper.h>
@@ -951,6 +952,12 @@ static int adv7511_bridge_attach(struct drm_bridge *bridge, 
	struct adv7511 *adv = bridge_to_adv7511(bridge);

	int ret = 0;



	if (adv->next_bridge) {

		ret = drm_bridge_attach(bridge->encoder, adv->next_bridge, bridge, flags);

		if (ret)

			return ret;

	}



	if (!(flags & DRM_BRIDGE_ATTACH_NO_CONNECTOR)) {

		ret = adv7511_connector_init(adv);

		if (ret < 0)
@@ -1221,6 +1228,11 @@ static int adv7511_probe(struct i2c_client *i2c) 


	memset(&link_config, 0, sizeof(link_config));



	ret = drm_of_find_panel_or_bridge(dev->of_node, 1, -1, NULL,

					  &adv7511->next_bridge);

	if (ret && ret != -ENODEV)

		return ret;



	if (adv7511->info->link_config)

		ret = adv7511_parse_dt(dev->of_node, &link_config);

	else