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

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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: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://lore.kernel.org/r/20240331-adv7511-next-bridge-v2-1-7356d61dc7b2@linaro.org
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20240331-adv7511-next-bridge-v2-1-7356d61dc7b2@linaro.org
This commit is contained in:
Dmitry Baryshkov 2024-03-31 23:45:48 +03:00 committed by Neil Armstrong
parent 251e3c1fe1
commit 14b3cdbd0e
2 changed files with 13 additions and 0 deletions
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1
drivers/gpu/drm/bridge/adv7511/adv7511.h
View File

@ -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;

12
drivers/gpu/drm/bridge/adv7511/adv7511_drv.c
View File

@ -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