This reverts commit b86d895524ab ("drm/bridge: Add an ->atomic_check()
hook"). Commit 6ed7e9625fa6 ("drm/bridge: Add a drm_bridge_state
object") introduced a circular dependency between drm.ko and
drm_kms_helper.ko which uncovered a misdesign in how the whole thing
was implemented. Let's revert all patches depending on the bridge_state
infrastructure for now.
Signed-off-by: Boris Brezillon <boris.brezillon@xxxxxxxxxxxxx>
---
drivers/gpu/drm/drm_atomic_helper.c | 12 +++---
drivers/gpu/drm/drm_bridge.c | 62 -----------------------------
include/drm/drm_bridge.h | 29 +-------------
3 files changed, 7 insertions(+), 96 deletions(-)
diff --git a/drivers/gpu/drm/drm_atomic_helper.c b/drivers/gpu/drm/drm_atomic_helper.c
index afe14f72a824..ad8eae98d9e8 100644
--- a/drivers/gpu/drm/drm_atomic_helper.c
+++ b/drivers/gpu/drm/drm_atomic_helper.c
@@ -437,12 +437,12 @@ mode_fixup(struct drm_atomic_state *state)
funcs = encoder->helper_private;
bridge = drm_bridge_chain_get_first_bridge(encoder);
- ret = drm_atomic_bridge_chain_check(bridge,
- new_crtc_state,
- new_conn_state);
- if (ret) {
- DRM_DEBUG_ATOMIC("Bridge atomic check failed\n");
- return ret;
+ ret = drm_bridge_chain_mode_fixup(bridge,
+ &new_crtc_state->mode,
+ &new_crtc_state->adjusted_mode);
+ if (!ret) {
+ DRM_DEBUG_ATOMIC("Bridge fixup failed\n");
+ return -EINVAL;
}
if (funcs && funcs->atomic_check) {
diff --git a/drivers/gpu/drm/drm_bridge.c b/drivers/gpu/drm/drm_bridge.c
index 8e4b799150b0..872e159fcb42 100644
--- a/drivers/gpu/drm/drm_bridge.c
+++ b/drivers/gpu/drm/drm_bridge.c
@@ -645,68 +645,6 @@ void drm_atomic_bridge_chain_enable(struct drm_bridge *bridge,
}
EXPORT_SYMBOL(drm_atomic_bridge_chain_enable);
-static int drm_atomic_bridge_check(struct drm_bridge *bridge,
- struct drm_crtc_state *crtc_state,
- struct drm_connector_state *conn_state)
-{
- if (bridge->funcs->atomic_check) {
- struct drm_bridge_state *bridge_state;
- int ret;
-
- bridge_state = drm_atomic_get_new_bridge_state(crtc_state->state,
- bridge);
- if (WARN_ON(!bridge_state))
- return -EINVAL;
-
- ret = bridge->funcs->atomic_check(bridge, bridge_state,
- crtc_state, conn_state);
- if (ret)
- return ret;
- } else if (bridge->funcs->mode_fixup) {
- if (!bridge->funcs->mode_fixup(bridge, &crtc_state->mode,
- &crtc_state->adjusted_mode))
- return -EINVAL;
- }
-
- return 0;
-}
-
-/**
- * drm_atomic_bridge_chain_check() - Do an atomic check on the bridge chain
- * @bridge: bridge control structure
- * @crtc_state: new CRTC state
- * @conn_state: new connector state
- *
- * Calls &drm_bridge_funcs.atomic_check() (falls back on
- * &drm_bridge_funcs.mode_fixup()) op for all the bridges in the encoder chain,
- * starting from the last bridge to the first. These are called before calling
- * &drm_encoder_helper_funcs.atomic_check()
- *
- * RETURNS:
- * 0 on success, a negative error code on failure
- */
-int drm_atomic_bridge_chain_check(struct drm_bridge *bridge,
- struct drm_crtc_state *crtc_state,
- struct drm_connector_state *conn_state)
-{
- struct drm_encoder *encoder = bridge->encoder;
- struct drm_bridge *iter;
-
- list_for_each_entry_reverse(iter, &encoder->bridge_chain, chain_node) {
- int ret;
-
- ret = drm_atomic_bridge_check(iter, crtc_state, conn_state);
- if (ret)
- return ret;
-
- if (iter == bridge)
- break;
- }
-
- return 0;
-}
-EXPORT_SYMBOL(drm_atomic_bridge_chain_check);
-
/**
* __drm_atomic_helper_bridge_reset() - Initialize a bridge state to its
* default
diff --git a/include/drm/drm_bridge.h b/include/drm/drm_bridge.h
index ae0595c70132..52d3ed150618 100644
--- a/include/drm/drm_bridge.h
+++ b/include/drm/drm_bridge.h
@@ -128,9 +128,7 @@ struct drm_bridge_funcs {
* this function passes all other callbacks must succeed for this
* configuration.
*
- * The mode_fixup callback is optional. &drm_bridge_funcs.mode_fixup()
- * is not called when &drm_bridge_funcs.atomic_check() is implemented,
- * so only one of them should be provided.
+ * The @mode_fixup callback is optional.
*
* NOTE:
*
@@ -387,28 +385,6 @@ struct drm_bridge_funcs {
void (*atomic_destroy_state)(struct drm_bridge *bridge,
struct drm_bridge_state *state);
- /**
- * @atomic_check:
- *
- * This method is responsible for checking bridge state correctness.
- * It can also check the state of the surrounding components in chain
- * to make sure the whole pipeline can work properly.
- *
- * &drm_bridge_funcs.atomic_check() hooks are called in reverse
- * order (from the last to the first bridge).
- *
- * This method is optional. &drm_bridge_funcs.mode_fixup() is not
- * called when &drm_bridge_funcs.atomic_check() is implemented, so only
- * one of them should be provided.
- *
- * RETURNS:
- * zero if the check passed, a negative error code otherwise.
- */
- int (*atomic_check)(struct drm_bridge *bridge,
- struct drm_bridge_state *bridge_state,
- struct drm_crtc_state *crtc_state,
- struct drm_connector_state *conn_state);
-
/**
* @atomic_reset:
*
@@ -576,9 +552,6 @@ void drm_bridge_chain_mode_set(struct drm_bridge *bridge,
void drm_bridge_chain_pre_enable(struct drm_bridge *bridge);
void drm_bridge_chain_enable(struct drm_bridge *bridge);
-int drm_atomic_bridge_chain_check(struct drm_bridge *bridge,
- struct drm_crtc_state *crtc_state,
- struct drm_connector_state *conn_state);
void drm_atomic_bridge_chain_disable(struct drm_bridge *bridge,
struct drm_atomic_state *state);
void drm_atomic_bridge_chain_post_disable(struct drm_bridge *bridge,
--
2.23.0
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