diff options
| author | Dmitry Baryshkov <dmitry.baryshkov@linaro.org> | 2024-03-31 23:45:48 +0300 |
|---|---|---|
| committer | Neil Armstrong <neil.armstrong@linaro.org> | 2024-04-24 08:55:44 +0200 |
| commit | 14b3cdbd0e5b73824b7b2c7a4b1fbfd743044a5e (patch) | |
| tree | da3b1b6d7c8a899b70e30928f1fb3896c139650e | |
| parent | 251e3c1fe15cb8bf71a834f863f6225b8164f7b8 (diff) | |
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: 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
| -rw-r--r-- | drivers/gpu/drm/bridge/adv7511/adv7511.h | 1 | ||||
| -rw-r--r-- | drivers/gpu/drm/bridge/adv7511/adv7511_drv.c | 12 |
2 files changed, 13 insertions, 0 deletions
diff --git a/drivers/gpu/drm/bridge/adv7511/adv7511.h b/drivers/gpu/drm/bridge/adv7511/adv7511.h index 39c9ece373b0..ea271f62b214 100644 --- a/drivers/gpu/drm/bridge/adv7511/adv7511.h +++ b/drivers/gpu/drm/bridge/adv7511/adv7511.h @@ -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; diff --git a/drivers/gpu/drm/bridge/adv7511/adv7511_drv.c b/drivers/gpu/drm/bridge/adv7511/adv7511_drv.c index f3b4616a8fb6..dd21b81bd28f 100644 --- a/drivers/gpu/drm/bridge/adv7511/adv7511_drv.c +++ b/drivers/gpu/drm/bridge/adv7511/adv7511_drv.c @@ -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 |