This way the drm_bridge_funcs interface is consistent with the rest of
the subsystem.
The only driver implementing those hooks (analogix DP) is patched too.
Signed-off-by: Boris Brezillon <boris.brezil...@collabora.com>
---
Changes in v3:
* Old state clarification moved to a separate patch
Changes in v2:
* Pass the old bridge state
---
.../drm/bridge/analogix/analogix_dp_core.c | 12 ++--
drivers/gpu/drm/drm_bridge.c | 61 +++++++++++++++----
include/drm/drm_bridge.h | 24 ++++----
3 files changed, 69 insertions(+), 28 deletions(-)
diff --git a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
index bb411fe52ae8..e438e757f2ce 100644
--- a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
+++ b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
@@ -1290,8 +1290,9 @@ struct drm_crtc *analogix_dp_get_new_crtc(struct
analogix_dp_device *dp,
}
static void analogix_dp_bridge_atomic_pre_enable(struct drm_bridge *bridge,
- struct drm_atomic_state *state)
+ struct drm_bridge_state
*bstate)
{
+ struct drm_atomic_state *state = bstate->base.state;
struct analogix_dp_device *dp = bridge->driver_private;
struct drm_crtc *crtc;
struct drm_crtc_state *old_crtc_state;
@@ -1367,8 +1368,9 @@ static int analogix_dp_set_bridge(struct
analogix_dp_device *dp)
}
static void analogix_dp_bridge_atomic_enable(struct drm_bridge *bridge,
- struct drm_atomic_state *state)
+ struct drm_bridge_state *bstate)
{
+ struct drm_atomic_state *state = bstate->base.state;
struct analogix_dp_device *dp = bridge->driver_private;
struct drm_crtc *crtc;
struct drm_crtc_state *old_crtc_state;
@@ -1441,8 +1443,9 @@ static void analogix_dp_bridge_disable(struct drm_bridge
*bridge)
}
static void analogix_dp_bridge_atomic_disable(struct drm_bridge *bridge,
- struct drm_atomic_state *state)
+ struct drm_bridge_state *bstate)
{
+ struct drm_atomic_state *state = bstate->base.state;
struct analogix_dp_device *dp = bridge->driver_private;
struct drm_crtc *crtc;
struct drm_crtc_state *new_crtc_state = NULL;
@@ -1465,8 +1468,9 @@ static void analogix_dp_bridge_atomic_disable(struct
drm_bridge *bridge,
static
void analogix_dp_bridge_atomic_post_disable(struct drm_bridge *bridge,
- struct drm_atomic_state *state)
+ struct drm_bridge_state *bstate)
{
+ struct drm_atomic_state *state = bstate->base.state;
struct analogix_dp_device *dp = bridge->driver_private;
struct drm_crtc *crtc;
struct drm_crtc_state *new_crtc_state;
diff --git a/drivers/gpu/drm/drm_bridge.c b/drivers/gpu/drm/drm_bridge.c
index ca74bfe028c9..377866e3214f 100644
--- a/drivers/gpu/drm/drm_bridge.c
+++ b/drivers/gpu/drm/drm_bridge.c
@@ -468,10 +468,19 @@ void drm_atomic_bridge_chain_disable(struct drm_bridge
*bridge,
encoder = bridge->encoder;
list_for_each_entry_reverse(iter, &encoder->bridge_chain,
chain_node) {
- if (iter->funcs->atomic_disable)
- iter->funcs->atomic_disable(iter, old_state);
- else if (iter->funcs->disable)
+ if (iter->funcs->atomic_disable) {
+ struct drm_bridge_state *old_bridge_state;
+
+ old_bridge_state =
+ drm_atomic_get_old_bridge_state(old_state,
+ iter);
+ if (WARN_ON(!old_bridge_state))
+ return;
+
+ iter->funcs->atomic_disable(iter, old_bridge_state);
+ } else if (iter->funcs->disable) {
iter->funcs->disable(iter);
+ }
if (iter == bridge)
break;
@@ -503,10 +512,20 @@ void drm_atomic_bridge_chain_post_disable(struct
drm_bridge *bridge,
encoder = bridge->encoder;
list_for_each_entry_from(bridge, &encoder->bridge_chain,
chain_node) {
- if (bridge->funcs->atomic_post_disable)
- bridge->funcs->atomic_post_disable(bridge, old_state);
- else if (bridge->funcs->post_disable)
+ if (bridge->funcs->atomic_post_disable) {
+ struct drm_bridge_state *old_bridge_state;
+
+ old_bridge_state =
+ drm_atomic_get_old_bridge_state(old_state,
+ bridge);
+ if (WARN_ON(!old_bridge_state))
+ return;
+
+ bridge->funcs->atomic_post_disable(bridge,
+ old_bridge_state);
+ } else if (bridge->funcs->post_disable) {
bridge->funcs->post_disable(bridge);
+ }
}
}
EXPORT_SYMBOL(drm_atomic_bridge_chain_post_disable);
@@ -536,10 +555,19 @@ void drm_atomic_bridge_chain_pre_enable(struct drm_bridge
*bridge,
encoder = bridge->encoder;
list_for_each_entry_reverse(iter, &bridge->encoder->bridge_chain,
chain_node) {
- if (iter->funcs->atomic_pre_enable)
- iter->funcs->atomic_pre_enable(iter, old_state);
- else if (iter->funcs->pre_enable)
+ if (iter->funcs->atomic_pre_enable) {
+ struct drm_bridge_state *old_bridge_state;
+
+ old_bridge_state =
+ drm_atomic_get_old_bridge_state(old_state,
+ iter);
+ if (WARN_ON(!old_bridge_state))
+ return;
+
+ iter->funcs->atomic_pre_enable(iter, old_bridge_state);
+ } else if (iter->funcs->pre_enable) {
iter->funcs->pre_enable(iter);
+ }
if (iter == bridge)
break;
@@ -570,10 +598,19 @@ void drm_atomic_bridge_chain_enable(struct drm_bridge
*bridge,
encoder = bridge->encoder;
list_for_each_entry_from(bridge, &bridge->encoder->bridge_chain,
chain_node) {
- if (bridge->funcs->atomic_enable)
- bridge->funcs->atomic_enable(bridge, old_state);
- else if (bridge->funcs->enable)
+ if (bridge->funcs->atomic_enable) {
+ struct drm_bridge_state *old_bridge_state;
+
+ old_bridge_state =
+ drm_atomic_get_old_bridge_state(old_state,
+ bridge);
+ if (WARN_ON(!old_bridge_state))
+ return;
+
+ bridge->funcs->atomic_enable(bridge, old_bridge_state);
+ } else if (bridge->funcs->enable) {
bridge->funcs->enable(bridge);
+ }
}
}
EXPORT_SYMBOL(drm_atomic_bridge_chain_enable);
diff --git a/include/drm/drm_bridge.h b/include/drm/drm_bridge.h
index e814e6d6e7c2..b1f557d8dba9 100644
--- a/include/drm/drm_bridge.h
+++ b/include/drm/drm_bridge.h
@@ -266,8 +266,8 @@ struct drm_bridge_funcs {
* bridge's @atomic_pre_enable or @pre_enable function. If the preceding
* element is a &drm_encoder it's called right before the encoder's
* &drm_encoder_helper_funcs.atomic_enable hook.
- * This hook is passed the old atomic state (atomic state after new/old
- * states have been swapped).
+ * This hook is passed the old bridge state (the new one can be
+ * retrieved from bridge->state).
*
* The display pipe (i.e. clocks and timing signals) feeding this bridge
* will not yet be running when this callback is called. The bridge must
@@ -283,7 +283,7 @@ struct drm_bridge_funcs {
* The @atomic_pre_enable callback is optional.
*/
void (*atomic_pre_enable)(struct drm_bridge *bridge,
- struct drm_atomic_state *old_state);
+ struct drm_bridge_state *old_bridge_state);
/**
* @atomic_enable:
@@ -294,8 +294,8 @@ struct drm_bridge_funcs {
* bridge's @atomic_enable or @enable function. If the preceding element
* is a &drm_encoder it's called right after the encoder's
* &drm_encoder_helper_funcs.atomic_enable hook.
- * This hook is passed the old atomic state (atomic state after new/old
- * states have been swapped).
+ * This hook is passed the old bridge state (the new one can be
+ * retrieved from bridge->state).
*
* The bridge can assume that the display pipe (i.e. clocks and timing
* signals) feeding it is running when this callback is called. This
@@ -310,7 +310,7 @@ struct drm_bridge_funcs {
* The @atomic_enable callback is optional.
*/
void (*atomic_enable)(struct drm_bridge *bridge,
- struct drm_atomic_state *old_state);
+ struct drm_bridge_state *old_bridge_state);
/**
* @atomic_disable:
*
@@ -320,8 +320,8 @@ struct drm_bridge_funcs {
* bridge's @atomic_disable or @disable vfunc. If the preceding element
* is a &drm_encoder it's called right before the
* &drm_encoder_helper_funcs.atomic_disable hook.
- * This hook is passed the old atomic state (atomic state after new/old
- * states have been swapped).
+ * This hook is passed the old bridge state (the new one can be
+ * retrieved from bridge->state).
*
* The bridge can assume that the display pipe (i.e. clocks and timing
* signals) feeding it is still running when this callback is called.
@@ -335,7 +335,7 @@ struct drm_bridge_funcs {
* The @atomic_disable callback is optional.
*/
void (*atomic_disable)(struct drm_bridge *bridge,
- struct drm_atomic_state *old_state);
+ struct drm_bridge_state *old_bridge_state);
/**
* @atomic_post_disable:
@@ -346,8 +346,8 @@ struct drm_bridge_funcs {
* @atomic_post_disable or @post_disable function. If the preceding
* element is a &drm_encoder it's called right after the encoder's
* &drm_encoder_helper_funcs.atomic_disable hook.
- * This hook is passed the old atomic state (atomic state after new/old
- * states have been swapped).
+ * This hook is passed the old bridge state (the new one can be
+ * retrieved from bridge->state).
*
* The bridge must assume that the display pipe (i.e. clocks and timing
* signals) feeding it is no longer running when this callback is
@@ -363,7 +363,7 @@ struct drm_bridge_funcs {
* The @atomic_post_disable callback is optional.
*/
void (*atomic_post_disable)(struct drm_bridge *bridge,
- struct drm_atomic_state *old_state);
+ struct drm_bridge_state *old_bridge_state);
/**
* @atomic_duplicate_state:
--
2.21.0
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