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drm/bridge: panel: Introduce drmm_panel_bridge_add

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Unlike what can be found for other entities, there's no DRM-managed
function to create a panel_bridge instance from a panel.

Let's introduce one.

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/20220711173939.1132294-11-maxime@cerno.tech
This commit is contained in:
Maxime Ripard 2022-07-11 19:38:40 +02:00
parent 35a3b82f1b
commit abea75e920
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GPG Key ID: E3EF0D6F671851C5
2 changed files with 41 additions and 0 deletions
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39
drivers/gpu/drm/bridge/panel.c
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@ -8,6 +8,7 @@
#include <drm/drm_bridge.h> #include <drm/drm_bridge.h>
#include <drm/drm_connector.h> #include <drm/drm_connector.h>
#include <drm/drm_encoder.h> #include <drm/drm_encoder.h>
#include <drm/drm_managed.h>
#include <drm/drm_modeset_helper_vtables.h> #include <drm/drm_modeset_helper_vtables.h>
#include <drm/drm_of.h> #include <drm/drm_of.h>
#include <drm/drm_panel.h> #include <drm/drm_panel.h>
@ -367,6 +368,44 @@ struct drm_bridge *devm_drm_panel_bridge_add_typed(struct device *dev,
} }
EXPORT_SYMBOL(devm_drm_panel_bridge_add_typed); EXPORT_SYMBOL(devm_drm_panel_bridge_add_typed);
static void drmm_drm_panel_bridge_release(struct drm_device *drm, void *ptr)
{
struct drm_bridge *bridge = ptr;
drm_panel_bridge_remove(bridge);
}
/**
* drmm_panel_bridge_add - Creates a DRM-managed &drm_bridge and
* &drm_connector that just calls the
* appropriate functions from &drm_panel.
*
* @drm: DRM device to tie the bridge lifetime to
* @panel: The drm_panel being wrapped. Must be non-NULL.
*
* This is the DRM-managed version of drm_panel_bridge_add() which
* automatically calls drm_panel_bridge_remove() when @dev is cleaned
* up.
*/
struct drm_bridge *drmm_panel_bridge_add(struct drm_device *drm,
struct drm_panel *panel)
{
struct drm_bridge *bridge;
int ret;
bridge = drm_panel_bridge_add_typed(panel, panel->connector_type);
if (IS_ERR(bridge))
return bridge;
ret = drmm_add_action_or_reset(drm, drmm_drm_panel_bridge_release,
bridge);
if (ret)
return ERR_PTR(ret);
return bridge;
}
EXPORT_SYMBOL(drmm_panel_bridge_add);
/** /**
* drm_panel_bridge_connector - return the connector for the panel bridge * drm_panel_bridge_connector - return the connector for the panel bridge
* @bridge: The drm_bridge. * @bridge: The drm_bridge.

2
include/drm/drm_bridge.h
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@ -930,6 +930,8 @@ struct drm_bridge *devm_drm_panel_bridge_add(struct device *dev,
struct drm_bridge *devm_drm_panel_bridge_add_typed(struct device *dev, struct drm_bridge *devm_drm_panel_bridge_add_typed(struct device *dev,
struct drm_panel *panel, struct drm_panel *panel,
u32 connector_type); u32 connector_type);
struct drm_bridge *drmm_panel_bridge_add(struct drm_device *drm,
struct drm_panel *panel);
struct drm_connector *drm_panel_bridge_connector(struct drm_bridge *bridge); struct drm_connector *drm_panel_bridge_connector(struct drm_bridge *bridge);
#else #else
static inline bool drm_bridge_is_panel(const struct drm_bridge *bridge) static inline bool drm_bridge_is_panel(const struct drm_bridge *bridge)