This reverts commit 6ed7e9625fa6 ("drm/bridge: Add a drm_bridge_state
object") which introduced a circular dependency between drm.ko and
drm_kms_helper.ko. Looks like the helper/core split is not appropriate
and fixing that is not simple.
Signed-off-by: Boris Brezillon <boris.brezillon@xxxxxxxxxxxxx>
---
drivers/gpu/drm/drm_atomic.c | 39 --------
drivers/gpu/drm/drm_atomic_helper.c | 20 ----
drivers/gpu/drm/drm_bridge.c | 139 ++--------------------------
include/drm/drm_atomic.h | 3 -
include/drm/drm_bridge.h | 114 -----------------------
5 files changed, 6 insertions(+), 309 deletions(-)
diff --git a/drivers/gpu/drm/drm_atomic.c b/drivers/gpu/drm/drm_atomic.c
index bf1b9c37d515..d33691512a8e 100644
--- a/drivers/gpu/drm/drm_atomic.c
+++ b/drivers/gpu/drm/drm_atomic.c
@@ -30,7 +30,6 @@
#include <drm/drm_atomic.h>
#include <drm/drm_atomic_uapi.h>
-#include <drm/drm_bridge.h>
#include <drm/drm_debugfs.h>
#include <drm/drm_device.h>
#include <drm/drm_drv.h>
@@ -1018,44 +1017,6 @@ static void drm_atomic_connector_print_state(struct drm_printer *p,
connector->funcs->atomic_print_state(p, state);
}
-/**
- * drm_atomic_add_encoder_bridges - add bridges attached to an encoder
- * @state: atomic state
- * @encoder: DRM encoder
- *
- * This function adds all bridges attached to @encoder. This is needed to add
- * bridge states to @state and make them available when
- * &bridge_funcs.atomic_{check,pre_enable,enable,disable_post_disable}() are
- * called
- *
- * Returns:
- * 0 on success or can fail with -EDEADLK or -ENOMEM. When the error is EDEADLK
- * then the w/w mutex code has detected a deadlock and the entire atomic
- * sequence must be restarted. All other errors are fatal.
- */
-int
-drm_atomic_add_encoder_bridges(struct drm_atomic_state *state,
- struct drm_encoder *encoder)
-{
- struct drm_bridge_state *bridge_state;
- struct drm_bridge *bridge;
-
- if (!encoder)
- return 0;
-
- DRM_DEBUG_ATOMIC("Adding all bridges for [encoder:%d:%s] to %p\n",
- encoder->base.id, encoder->name, state);
-
- drm_for_each_bridge_in_chain(encoder, bridge) {
- bridge_state = drm_atomic_get_bridge_state(state, bridge);
- if (IS_ERR(bridge_state))
- return PTR_ERR(bridge_state);
- }
-
- return 0;
-}
-EXPORT_SYMBOL(drm_atomic_add_encoder_bridges);
-
/**
* drm_atomic_add_affected_connectors - add connectors for CRTC
* @state: atomic state
diff --git a/drivers/gpu/drm/drm_atomic_helper.c b/drivers/gpu/drm/drm_atomic_helper.c
index ad8eae98d9e8..4511c2e07bb9 100644
--- a/drivers/gpu/drm/drm_atomic_helper.c
+++ b/drivers/gpu/drm/drm_atomic_helper.c
@@ -730,26 +730,6 @@ drm_atomic_helper_check_modeset(struct drm_device *dev,
return ret;
}
- /*
- * Iterate over all connectors again, and add all affected bridges to
- * the state.
- */
- for_each_oldnew_connector_in_state(state, connector,
- old_connector_state,
- new_connector_state, i) {
- struct drm_encoder *encoder;
-
- encoder = old_connector_state->best_encoder;
- ret = drm_atomic_add_encoder_bridges(state, encoder);
- if (ret)
- return ret;
-
- encoder = new_connector_state->best_encoder;
- ret = drm_atomic_add_encoder_bridges(state, encoder);
- if (ret)
- return ret;
- }
-
ret = mode_valid(state);
if (ret)
return ret;
diff --git a/drivers/gpu/drm/drm_bridge.c b/drivers/gpu/drm/drm_bridge.c
index a213c9042f2c..c2cf0c90fa26 100644
--- a/drivers/gpu/drm/drm_bridge.c
+++ b/drivers/gpu/drm/drm_bridge.c
@@ -25,7 +25,6 @@
#include <linux/module.h>
#include <linux/mutex.h>
-#include <drm/drm_atomic_state_helper.h>
#include <drm/drm_bridge.h>
#include <drm/drm_encoder.h>
@@ -90,74 +89,6 @@ void drm_bridge_remove(struct drm_bridge *bridge)
}
EXPORT_SYMBOL(drm_bridge_remove);
-static struct drm_bridge_state *
-drm_atomic_default_bridge_duplicate_state(struct drm_bridge *bridge)
-{
- struct drm_bridge_state *new;
-
- if (WARN_ON(!bridge->base.state))
- return NULL;
-
- new = kzalloc(sizeof(*new), GFP_KERNEL);
- if (new)
- __drm_atomic_helper_bridge_duplicate_state(bridge, new);
-
- return new;
-}
-
-static struct drm_private_state *
-drm_bridge_atomic_duplicate_priv_state(struct drm_private_obj *obj)
-{
- struct drm_bridge *bridge = drm_priv_to_bridge(obj);
- struct drm_bridge_state *state;
-
- if (bridge->funcs->atomic_duplicate_state)
- state = bridge->funcs->atomic_duplicate_state(bridge);
- else
- state = drm_atomic_default_bridge_duplicate_state(bridge);
-
- return state ? &state->base : NULL;
-}
-
-static void
-drm_atomic_default_bridge_destroy_state(struct drm_bridge *bridge,
- struct drm_bridge_state *state)
-{
- /* Just a simple kfree() for now */
- kfree(state);
-}
-
-static void
-drm_bridge_atomic_destroy_priv_state(struct drm_private_obj *obj,
- struct drm_private_state *s)
-{
- struct drm_bridge_state *state = drm_priv_to_bridge_state(s);
- struct drm_bridge *bridge = drm_priv_to_bridge(obj);
-
- if (bridge->funcs->atomic_destroy_state)
- bridge->funcs->atomic_destroy_state(bridge, state);
- else
- drm_atomic_default_bridge_destroy_state(bridge, state);
-}
-
-static const struct drm_private_state_funcs drm_bridge_priv_state_funcs = {
- .atomic_duplicate_state = drm_bridge_atomic_duplicate_priv_state,
- .atomic_destroy_state = drm_bridge_atomic_destroy_priv_state,
-};
-
-static struct drm_bridge_state *
-drm_atomic_default_bridge_reset(struct drm_bridge *bridge)
-{
- struct drm_bridge_state *bridge_state;
-
- bridge_state = kzalloc(sizeof(*bridge_state), GFP_KERNEL);
- if (!bridge_state)
- return ERR_PTR(-ENOMEM);
-
- __drm_atomic_helper_bridge_reset(bridge, bridge_state);
- return bridge_state;
-}
-
/**
* drm_bridge_attach - attach the bridge to an encoder's chain
*
@@ -183,7 +114,6 @@ drm_atomic_default_bridge_reset(struct drm_bridge *bridge)
int drm_bridge_attach(struct drm_encoder *encoder, struct drm_bridge *bridge,
struct drm_bridge *previous)
{
- struct drm_bridge_state *state;
int ret;
if (!encoder || !bridge)
@@ -205,35 +135,15 @@ int drm_bridge_attach(struct drm_encoder *encoder, struct drm_bridge *bridge,
if (bridge->funcs->attach) {
ret = bridge->funcs->attach(bridge);
- if (ret < 0)
- goto err_reset_bridge;
- }
-
- if (bridge->funcs->atomic_reset)
- state = bridge->funcs->atomic_reset(bridge);
- else
- state = drm_atomic_default_bridge_reset(bridge);
-
- if (IS_ERR(state)) {
- ret = PTR_ERR(state);
- goto err_detach_bridge;
+ if (ret < 0) {
+ list_del(&bridge->chain_node);
+ bridge->dev = NULL;
+ bridge->encoder = NULL;
+ return ret;
+ }
}
- drm_atomic_private_obj_init(bridge->dev, &bridge->base,
- &state->base,
- &drm_bridge_priv_state_funcs);
-
return 0;
-
-err_detach_bridge:
- if (bridge->funcs->detach)
- bridge->funcs->detach(bridge);
-
-err_reset_bridge:
- bridge->dev = NULL;
- bridge->encoder = NULL;
- list_del(&bridge->chain_node);
- return ret;
}
EXPORT_SYMBOL(drm_bridge_attach);
@@ -245,8 +155,6 @@ void drm_bridge_detach(struct drm_bridge *bridge)
if (WARN_ON(!bridge->dev))
return;
- drm_atomic_private_obj_fini(&bridge->base);
-
if (bridge->funcs->detach)
bridge->funcs->detach(bridge);
@@ -608,41 +516,6 @@ void drm_atomic_bridge_chain_enable(struct drm_bridge *bridge,
}
EXPORT_SYMBOL(drm_atomic_bridge_chain_enable);
-/**
- * __drm_atomic_helper_bridge_reset() - Initialize a bridge state to its
- * default
- * @bridge: the bridge this state is refers to
- * @state: bridge state to initialize
- *
- * Initialize the bridge state to default values. This is meant to be* called
- * by the bridge &drm_plane_funcs.reset hook for bridges that subclass the
- * bridge state.
- */
-void __drm_atomic_helper_bridge_reset(struct drm_bridge *bridge,
- struct drm_bridge_state *state)
-{
- memset(state, 0, sizeof(*state));
- state->bridge = bridge;
-}
-EXPORT_SYMBOL(__drm_atomic_helper_bridge_reset);
-
-/**
- * __drm_atomic_helper_bridge_duplicate_state() - Copy atomic bridge state
- * @bridge: bridge object
- * @state: atomic bridge state
- *
- * Copies atomic state from a bridge's current state and resets inferred values.
- * This is useful for drivers that subclass the bridge state.
- */
-void __drm_atomic_helper_bridge_duplicate_state(struct drm_bridge *bridge,
- struct drm_bridge_state *state)
-{
- __drm_atomic_helper_private_obj_duplicate_state(&bridge->base,
- &state->base);
- state->bridge = bridge;
-}
-EXPORT_SYMBOL(__drm_atomic_helper_bridge_duplicate_state);
-
#ifdef CONFIG_OF
/**
* of_drm_find_bridge - find the bridge corresponding to the device node in
diff --git a/include/drm/drm_atomic.h b/include/drm/drm_atomic.h
index ccce65e14917..951dfb15c27b 100644
--- a/include/drm/drm_atomic.h
+++ b/include/drm/drm_atomic.h
@@ -669,9 +669,6 @@ __drm_atomic_get_current_plane_state(struct drm_atomic_state *state,
return plane->state;
}
-int __must_check
-drm_atomic_add_encoder_bridges(struct drm_atomic_state *state,
- struct drm_encoder *encoder);
int __must_check
drm_atomic_add_affected_connectors(struct drm_atomic_state *state,
struct drm_crtc *crtc);
diff --git a/include/drm/drm_bridge.h b/include/drm/drm_bridge.h
index fc7c71f4de55..694e153a7531 100644
--- a/include/drm/drm_bridge.h
+++ b/include/drm/drm_bridge.h
@@ -25,8 +25,6 @@
#include <linux/list.h>
#include <linux/ctype.h>
-
-#include <drm/drm_atomic.h>
#include <drm/drm_encoder.h>
#include <drm/drm_mode_object.h>
#include <drm/drm_modes.h>
@@ -35,23 +33,6 @@ struct drm_bridge;
struct drm_bridge_timings;
struct drm_panel;
-/**
- * struct drm_bridge_state - Atomic bridge state object
- * @base: inherit from &drm_private_state
- * @bridge: the bridge this state refers to
- */
-struct drm_bridge_state {
- struct drm_private_state base;
-
- struct drm_bridge *bridge;
-};
-
-static inline struct drm_bridge_state *
-drm_priv_to_bridge_state(struct drm_private_state *priv)
-{
- return container_of(priv, struct drm_bridge_state, base);
-}
-
/**
* struct drm_bridge_funcs - drm_bridge control functions
*/
@@ -357,49 +338,6 @@ struct drm_bridge_funcs {
*/
void (*atomic_post_disable)(struct drm_bridge *bridge,
struct drm_atomic_state *old_state);
-
- /**
- * @atomic_duplicate_state:
- *
- * Duplicate the current bridge state object (which is guaranteed to be
- * non-NULL).
- *
- * The atomic_duplicate_state() is optional. When not implemented the
- * core allocates a drm_bridge_state object and calls
- * &__drm_atomic_helper_bridge_duplicate_state() to initialize it.
- *
- * RETURNS:
- * A valid drm_bridge_state object or NULL if the allocation fails.
- */
- struct drm_bridge_state *(*atomic_duplicate_state)(struct drm_bridge *bridge);
-
- /**
- * @atomic_destroy_state:
- *
- * Destroy a bridge state object previously allocated by
- * &drm_bridge_funcs.atomic_duplicate_state().
- *
- * The atomic_destroy_state hook is optional. When not implemented the
- * core calls kfree() on the state.
- */
- void (*atomic_destroy_state)(struct drm_bridge *bridge,
- struct drm_bridge_state *state);
-
- /**
- * @atomic_reset:
- *
- * Reset the bridge to a predefined state (or retrieve its current
- * state) and return a &drm_bridge_state object matching this state.
- * This function is called at attach time.
- *
- * The atomic_reset hook is optional. When not implemented the core
- * allocates a new state and calls &__drm_atomic_helper_bridge_reset().
- *
- * RETURNS:
- * A valid drm_bridge_state object in case of success, an ERR_PTR()
- * giving the reason of the failure otherwise.
- */
- struct drm_bridge_state *(*atomic_reset)(struct drm_bridge *bridge);
};
/**
@@ -442,8 +380,6 @@ struct drm_bridge_timings {
* struct drm_bridge - central DRM bridge control structure
*/
struct drm_bridge {
- /** @base: inherit from &drm_private_object */
- struct drm_private_obj base;
/** @dev: DRM device this bridge belongs to */
struct drm_device *dev;
/** @encoder: encoder to which this bridge is connected */
@@ -468,12 +404,6 @@ struct drm_bridge {
void *driver_private;
};
-static inline struct drm_bridge *
-drm_priv_to_bridge(struct drm_private_obj *priv)
-{
- return container_of(priv, struct drm_bridge, base);
-}
-
void drm_bridge_add(struct drm_bridge *bridge);
void drm_bridge_remove(struct drm_bridge *bridge);
struct drm_bridge *of_drm_find_bridge(struct device_node *np);
@@ -561,50 +491,6 @@ void drm_atomic_bridge_chain_pre_enable(struct drm_bridge *bridge,
void drm_atomic_bridge_chain_enable(struct drm_bridge *bridge,
struct drm_atomic_state *state);
-void __drm_atomic_helper_bridge_reset(struct drm_bridge *bridge,
- struct drm_bridge_state *state);
-void __drm_atomic_helper_bridge_duplicate_state(struct drm_bridge *bridge,
- struct drm_bridge_state *new);
-
-static inline struct drm_bridge_state *
-drm_atomic_get_bridge_state(struct drm_atomic_state *state,
- struct drm_bridge *bridge)
-{
- struct drm_private_state *obj_state;
-
- obj_state = drm_atomic_get_private_obj_state(state, &bridge->base);
- if (IS_ERR(obj_state))
- return ERR_CAST(obj_state);
-
- return drm_priv_to_bridge_state(obj_state);
-}
-
-static inline struct drm_bridge_state *
-drm_atomic_get_old_bridge_state(struct drm_atomic_state *state,
- struct drm_bridge *bridge)
-{
- struct drm_private_state *obj_state;
-
- obj_state = drm_atomic_get_old_private_obj_state(state, &bridge->base);
- if (!obj_state)
- return NULL;
-
- return drm_priv_to_bridge_state(obj_state);
-}
-
-static inline struct drm_bridge_state *
-drm_atomic_get_new_bridge_state(struct drm_atomic_state *state,
- struct drm_bridge *bridge)
-{
- struct drm_private_state *obj_state;
-
- obj_state = drm_atomic_get_new_private_obj_state(state, &bridge->base);
- if (!obj_state)
- return NULL;
-
- return drm_priv_to_bridge_state(obj_state);
-}
-
#ifdef CONFIG_DRM_PANEL_BRIDGE
struct drm_bridge *drm_panel_bridge_add(struct drm_panel *panel);
struct drm_bridge *drm_panel_bridge_add_typed(struct drm_panel *panel,
--
2.23.0
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