Instead of a drm_atomic_state. The only driver implementing those hooks
is patched too.
While at it, adjust the documentation and argument names to clarify the
fact that the state being passed to those functions/hooks is the old
state.
Signed-off-by: Boris Brezillon <boris.brezil...@collabora.com>
---
Changes in v2:
* Pass the old bridge state
---
.../drm/bridge/analogix/analogix_dp_core.c | 12 ++-
drivers/gpu/drm/drm_bridge.c | 73 ++++++++++++++-----
include/drm/drm_bridge.h | 23 ++++--
3 files changed, 76 insertions(+), 32 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 6c2d7691455b..5c83cac7975e 100644
--- a/drivers/gpu/drm/drm_bridge.c
+++ b/drivers/gpu/drm/drm_bridge.c
@@ -437,7 +437,7 @@ EXPORT_SYMBOL(drm_bridge_chain_enable);
/**
* drm_atomic_bridge_chain_disable - disables all bridges in the encoder chain
* @bridge: bridge control structure
- * @state: atomic state being committed
+ * @old_state: old atomic state
*
* Calls &drm_bridge_funcs.atomic_disable (falls back on
* &drm_bridge_funcs.disable) op for all the bridges in the encoder chain,
@@ -447,16 +447,24 @@ EXPORT_SYMBOL(drm_bridge_chain_enable);
* Note: the bridge passed should be the one closest to the encoder
*/
void drm_atomic_bridge_chain_disable(struct drm_bridge *bridge,
- struct drm_atomic_state *state)
+ struct drm_atomic_state *old_state)
{
struct drm_encoder *encoder = bridge->encoder;
struct drm_bridge *iter;
list_for_each_entry_reverse(iter, &encoder->bridge_chain, chain_node) {
- if (iter->funcs->atomic_disable)
- iter->funcs->atomic_disable(iter, state);
- else if (iter->funcs->disable)
+ if (iter->funcs->atomic_disable) {
+ struct drm_bridge_state *bridge_state;
+
+ bridge_state =
drm_atomic_get_old_bridge_state(old_state,
+ iter);
+ if (WARN_ON(!bridge_state))
+ return;
+
+ iter->funcs->atomic_disable(iter, bridge_state);
+ } else if (iter->funcs->disable) {
iter->funcs->disable(iter);
+ }
if (iter == bridge)
break;
@@ -468,7 +476,7 @@ EXPORT_SYMBOL(drm_atomic_bridge_chain_disable);
* drm_atomic_bridge_chain_post_disable - cleans up after disabling all bridges
* in the encoder chain
* @bridge: bridge control structure
- * @state: atomic state being committed
+ * @old_state: old atomic state
*
* Calls &drm_bridge_funcs.atomic_post_disable (falls back on
* &drm_bridge_funcs.post_disable) op for all the bridges in the encoder chain,
@@ -478,15 +486,24 @@ EXPORT_SYMBOL(drm_atomic_bridge_chain_disable);
* Note: the bridge passed should be the one closest to the encoder
*/
void drm_atomic_bridge_chain_post_disable(struct drm_bridge *bridge,
- struct drm_atomic_state *state)
+ struct drm_atomic_state *old_state)
{
struct drm_encoder *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, state);
- else if (bridge->funcs->post_disable)
+ if (bridge->funcs->atomic_post_disable) {
+ struct drm_bridge_state *bridge_state;
+
+ bridge_state =
drm_atomic_get_old_bridge_state(old_state,
+ bridge);
+ if (WARN_ON(!bridge_state))
+ return;
+
+ bridge->funcs->atomic_post_disable(bridge,
+ bridge_state);
+ } else if (bridge->funcs->post_disable) {
bridge->funcs->post_disable(bridge);
+ }
}
}
EXPORT_SYMBOL(drm_atomic_bridge_chain_post_disable);
@@ -495,7 +512,7 @@ EXPORT_SYMBOL(drm_atomic_bridge_chain_post_disable);
* drm_atomic_bridge_chain_pre_enable - prepares for enabling all bridges in
* the encoder chain
* @bridge: bridge control structure
- * @state: atomic state being committed
+ * @old_state: old atomic state
*
* Calls &drm_bridge_funcs.atomic_pre_enable (falls back on
* &drm_bridge_funcs.pre_enable) op for all the bridges in the encoder chain,
@@ -505,16 +522,24 @@ EXPORT_SYMBOL(drm_atomic_bridge_chain_post_disable);
* Note: the bridge passed should be the one closest to the encoder
*/
void drm_atomic_bridge_chain_pre_enable(struct drm_bridge *bridge,
- struct drm_atomic_state *state)
+ struct drm_atomic_state *old_state)
{
struct drm_encoder *encoder = bridge->encoder;
struct drm_bridge *iter;
list_for_each_entry_reverse(iter, &encoder->bridge_chain, chain_node) {
- if (iter->funcs->atomic_pre_enable)
- iter->funcs->atomic_pre_enable(iter, state);
- else if (iter->funcs->pre_enable)
+ if (iter->funcs->atomic_pre_enable) {
+ struct drm_bridge_state *bridge_state;
+
+ bridge_state =
drm_atomic_get_old_bridge_state(old_state,
+ iter);
+ if (WARN_ON(!bridge_state))
+ return;
+
+ iter->funcs->atomic_pre_enable(iter, bridge_state);
+ } else if (iter->funcs->pre_enable) {
iter->funcs->pre_enable(iter);
+ }
if (iter == bridge)
break;
@@ -525,7 +550,7 @@ EXPORT_SYMBOL(drm_atomic_bridge_chain_pre_enable);
/**
* drm_atomic_bridge_chain_enable - enables all bridges in the encoder chain
* @bridge: bridge control structure
- * @state: atomic state being committed
+ * @old_state: old atomic state
*
* Calls &drm_bridge_funcs.atomic_enable (falls back on
* &drm_bridge_funcs.enable) op for all the bridges in the encoder chain,
@@ -535,15 +560,23 @@ EXPORT_SYMBOL(drm_atomic_bridge_chain_pre_enable);
* Note: the bridge passed should be the one closest to the encoder
*/
void drm_atomic_bridge_chain_enable(struct drm_bridge *bridge,
- struct drm_atomic_state *state)
+ struct drm_atomic_state *old_state)
{
struct drm_encoder *encoder = bridge->encoder;
list_for_each_entry_from(bridge, &encoder->bridge_chain, chain_node) {
- if (bridge->funcs->atomic_enable)
- bridge->funcs->atomic_enable(bridge, state);
- else if (bridge->funcs->enable)
+ if (bridge->funcs->atomic_enable) {
+ struct drm_bridge_state *bridge_state;
+
+ bridge_state =
drm_atomic_get_old_bridge_state(old_state,
+ bridge);
+ if (WARN_ON(!bridge_state))
+ return;
+
+ bridge->funcs->atomic_enable(bridge, 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 11b20e2a9fc6..231f62cd681d 100644
--- a/include/drm/drm_bridge.h
+++ b/include/drm/drm_bridge.h
@@ -264,7 +264,8 @@ struct drm_bridge_funcs {
* preceding element is a bridge this means it's called before that
* 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.
+ * &drm_encoder_helper_funcs.atomic_enable hook. 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
@@ -280,7 +281,7 @@ struct drm_bridge_funcs {
* The @atomic_pre_enable callback is optional.
*/
void (*atomic_pre_enable)(struct drm_bridge *bridge,
- struct drm_atomic_state *state);
+ struct drm_bridge_state *old_bridge_state);
/**
* @atomic_enable:
@@ -290,7 +291,9 @@ struct drm_bridge_funcs {
* preceding element is a bridge this means it's called after that
* 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.
+ * &drm_encoder_helper_funcs.atomic_enable hook. 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
@@ -305,7 +308,7 @@ struct drm_bridge_funcs {
* The enable callback is optional.
*/
void (*atomic_enable)(struct drm_bridge *bridge,
- struct drm_atomic_state *state);
+ struct drm_bridge_state *old_bridge_state);
/**
* @atomic_disable:
*
@@ -314,7 +317,9 @@ struct drm_bridge_funcs {
* preceding element is a bridge this means it's called before that
* 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.
+ * &drm_encoder_helper_funcs.atomic_disable hook. 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.
@@ -328,7 +333,7 @@ struct drm_bridge_funcs {
* The disable callback is optional.
*/
void (*atomic_disable)(struct drm_bridge *bridge,
- struct drm_atomic_state *state);
+ struct drm_bridge_state *old_bridge_state);
/**
* @atomic_post_disable:
@@ -338,7 +343,9 @@ struct drm_bridge_funcs {
* element is a bridge this means it's called after that bridge's
* @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.
+ * &drm_encoder_helper_funcs.atomic_disable hook. 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
@@ -354,7 +361,7 @@ struct drm_bridge_funcs {
* The post_disable callback is optional.
*/
void (*atomic_post_disable)(struct drm_bridge *bridge,
- struct drm_atomic_state *state);
+ struct drm_bridge_state *old_bridge_state);
/**
* @atomic_duplicate_state:
--
2.21.0
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