diff options
| author | Dave Stevenson <dave.stevenson@raspberrypi.com> | 2022-12-05 17:33:27 +0000 |
|---|---|---|
| committer | Maxime Ripard <maxime@cerno.tech> | 2022-12-08 09:56:57 +0100 |
| commit | 5ea6b17027810ffbdb5bea7d0a2b1d312dd1021c (patch) | |
| tree | cb733c6a771c15a19f3f0a45bb9eea7d2fe2fc68 | |
| parent | 4fb912e5e19075874379cfcf074d90bd51ebf8ea (diff) | |
| download | linux-5ea6b17027810ffbdb5bea7d0a2b1d312dd1021c.tar.gz | |
drm/panel: Add prepare_prev_first flag to drm_panel
Mapping to the drm_bridge flag pre_enable_prev_first,
add a new flag prepare_prev_first to drm_panel to allow
the panel driver to request that the upstream bridge should
be pre_enabled before the panel prepare.
Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Link: https://lore.kernel.org/r/20221205173328.1395350-6-dave.stevenson@raspberrypi.com
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
| -rw-r--r-- | drivers/gpu/drm/bridge/panel.c | 2 | ||||
| -rw-r--r-- | include/drm/drm_panel.h | 10 |
2 files changed, 12 insertions, 0 deletions
diff --git a/drivers/gpu/drm/bridge/panel.c b/drivers/gpu/drm/bridge/panel.c index 216af76d0042..03c3274dc3d9 100644 --- a/drivers/gpu/drm/bridge/panel.c +++ b/drivers/gpu/drm/bridge/panel.c @@ -364,6 +364,8 @@ struct drm_bridge *devm_drm_panel_bridge_add_typed(struct device *dev, devres_free(ptr); } + bridge->pre_enable_prev_first = panel->prepare_prev_first; + return bridge; } EXPORT_SYMBOL(devm_drm_panel_bridge_add_typed); diff --git a/include/drm/drm_panel.h b/include/drm/drm_panel.h index 994bfcdd84c5..432fab2347eb 100644 --- a/include/drm/drm_panel.h +++ b/include/drm/drm_panel.h @@ -188,6 +188,16 @@ struct drm_panel { * Panel entry in registry. */ struct list_head list; + + /** + * @prepare_prev_first: + * + * The previous controller should be prepared first, before the prepare + * for the panel is called. This is largely required for DSI panels + * where the DSI host controller should be initialised to LP-11 before + * the panel is powered up. + */ + bool prepare_prev_first; }; void drm_panel_init(struct drm_panel *panel, struct device *dev, |