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| author |   Maxime Ripard <maxime@cerno.tech> | 2022-07-11 19:38:41 +0200 |
|---|---|---|
| committer | Maxime Ripard <maxime@cerno.tech> | 2022-07-13 10:46:06 +0200 |
| commit | ae9f1f2ca093906f06311ade42772eeb021af39f (patch) | |
| tree | aec4cb96884deac9ce4566aa14105610290e6ab6 | |
| parent | drm/bridge: panel: Introduce drmm_panel_bridge_add (diff) | |
| download | linux-dev-ae9f1f2ca093906f06311ade42772eeb021af39f.tar.xz linux-dev-ae9f1f2ca093906f06311ade42772eeb021af39f.zip | |
drm/bridge: panel: Introduce drmm_of_get_bridge
Unlike what can be found for other DRM entities, we don't have a
DRM-managed function equivalent to devm_drm_of_get_bridge().
Let's create it.
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Acked-by: Thomas Zimmermann <tzimmermann@suse.de>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Link: https://lore.kernel.org/r/20220711173939.1132294-12-maxime@cerno.tech
| -rw-r--r-- | drivers/gpu/drm/bridge/panel.c | 35 | ||||
| -rw-r--r-- | include/drm/drm_bridge.h | 2 |
2 files changed, 37 insertions, 0 deletions
diff --git a/drivers/gpu/drm/bridge/panel.c b/drivers/gpu/drm/bridge/panel.c index 7d34ebfe611d..216af76d0042 100644 --- a/drivers/gpu/drm/bridge/panel.c +++ b/drivers/gpu/drm/bridge/panel.c @@ -459,4 +459,39 @@ struct drm_bridge *devm_drm_of_get_bridge(struct device *dev, return bridge; } EXPORT_SYMBOL(devm_drm_of_get_bridge); + +/** + * drmm_of_get_bridge - Return next bridge in the chain + * @drm: device to tie the bridge lifetime to + * @np: device tree node containing encoder output ports + * @port: port in the device tree node + * @endpoint: endpoint in the device tree node + * + * Given a DT node's port and endpoint number, finds the connected node + * and returns the associated bridge if any, or creates and returns a + * drm panel bridge instance if a panel is connected. + * + * Returns a drmm managed pointer to the bridge if successful, or an error + * pointer otherwise. + */ +struct drm_bridge *drmm_of_get_bridge(struct drm_device *drm, + struct device_node *np, + u32 port, u32 endpoint) +{ + struct drm_bridge *bridge; + struct drm_panel *panel; + int ret; + + ret = drm_of_find_panel_or_bridge(np, port, endpoint, + &panel, &bridge); + if (ret) + return ERR_PTR(ret); + + if (panel) + bridge = drmm_panel_bridge_add(drm, panel); + + return bridge; +} +EXPORT_SYMBOL(drmm_of_get_bridge); + #endif diff --git a/include/drm/drm_bridge.h b/include/drm/drm_bridge.h index e37a419ac2b4..dba5d81e3b4a 100644 --- a/include/drm/drm_bridge.h +++ b/include/drm/drm_bridge.h @@ -949,6 +949,8 @@ static inline int drm_panel_bridge_set_orientation(struct drm_connector *connect #if defined(CONFIG_OF) && defined(CONFIG_DRM_PANEL_BRIDGE) struct drm_bridge *devm_drm_of_get_bridge(struct device *dev, struct device_node *node, u32 port, u32 endpoint); +struct drm_bridge *drmm_of_get_bridge(struct drm_device *drm, struct device_node *node, + u32 port, u32 endpoint); #else static inline struct drm_bridge *devm_drm_of_get_bridge(struct device *dev, struct device_node *node, |