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path: root/drivers/gpu/drm/drm_atomic.c
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Diffstat (limited to 'drivers/gpu/drm/drm_atomic.c')
-rw-r--r--drivers/gpu/drm/drm_atomic.c141
1 files changed, 62 insertions, 79 deletions
diff --git a/drivers/gpu/drm/drm_atomic.c b/drivers/gpu/drm/drm_atomic.c
index fdfb1ec17e66..a5673107db26 100644
--- a/drivers/gpu/drm/drm_atomic.c
+++ b/drivers/gpu/drm/drm_atomic.c
@@ -35,19 +35,14 @@
#include "drm_crtc_internal.h"
-static void crtc_commit_free(struct kref *kref)
+void __drm_crtc_commit_free(struct kref *kref)
{
struct drm_crtc_commit *commit =
container_of(kref, struct drm_crtc_commit, ref);
kfree(commit);
}
-
-void drm_crtc_commit_put(struct drm_crtc_commit *commit)
-{
- kref_put(&commit->ref, crtc_commit_free);
-}
-EXPORT_SYMBOL(drm_crtc_commit_put);
+EXPORT_SYMBOL(__drm_crtc_commit_free);
/**
* drm_atomic_state_default_release -
@@ -200,8 +195,8 @@ EXPORT_SYMBOL(drm_atomic_state_default_clear);
* all locks. So someone else could sneak in and change the current modeset
* configuration. Which means that all the state assembled in @state is no
* longer an atomic update to the current state, but to some arbitrary earlier
- * state. Which could break assumptions the driver's ->atomic_check likely
- * relies on.
+ * state. Which could break assumptions the driver's
+ * &drm_mode_config_funcs.atomic_check likely relies on.
*
* Hence we must clear all cached state and completely start over, using this
* function.
@@ -312,9 +307,8 @@ static s32 __user *get_out_fence_for_crtc(struct drm_atomic_state *state,
* @state: the CRTC whose incoming state to update
* @mode: kernel-internal mode to use for the CRTC, or NULL to disable
*
- * Set a mode (originating from the kernel) on the desired CRTC state. Does
- * not change any other state properties, including enable, active, or
- * mode_changed.
+ * Set a mode (originating from the kernel) on the desired CRTC state and update
+ * the enable property.
*
* RETURNS:
* Zero on success, error code on failure. Cannot return -EDEADLK.
@@ -461,11 +455,10 @@ drm_atomic_replace_property_blob_from_id(struct drm_crtc *crtc,
* @property: the property to set
* @val: the new property value
*
- * Use this instead of calling crtc->atomic_set_property directly.
- * This function handles generic/core properties and calls out to
- * driver's ->atomic_set_property() for driver properties. To ensure
- * consistent behavior you must call this function rather than the
- * driver hook directly.
+ * This function handles generic/core properties and calls out to driver's
+ * &drm_crtc_funcs.atomic_set_property for driver properties. To ensure
+ * consistent behavior you must call this function rather than the driver hook
+ * directly.
*
* RETURNS:
* Zero on success, error code on failure
@@ -537,10 +530,10 @@ EXPORT_SYMBOL(drm_atomic_crtc_set_property);
* @property: the property to set
* @val: return location for the property value
*
- * This function handles generic/core properties and calls out to
- * driver's ->atomic_get_property() for driver properties. To ensure
- * consistent behavior you must call this function rather than the
- * driver hook directly.
+ * This function handles generic/core properties and calls out to driver's
+ * &drm_crtc_funcs.atomic_get_property for driver properties. To ensure
+ * consistent behavior you must call this function rather than the driver hook
+ * directly.
*
* RETURNS:
* Zero on success, error code on failure
@@ -721,11 +714,10 @@ EXPORT_SYMBOL(drm_atomic_get_plane_state);
* @property: the property to set
* @val: the new property value
*
- * Use this instead of calling plane->atomic_set_property directly.
- * This function handles generic/core properties and calls out to
- * driver's ->atomic_set_property() for driver properties. To ensure
- * consistent behavior you must call this function rather than the
- * driver hook directly.
+ * This function handles generic/core properties and calls out to driver's
+ * &drm_plane_funcs.atomic_set_property for driver properties. To ensure
+ * consistent behavior you must call this function rather than the driver hook
+ * directly.
*
* RETURNS:
* Zero on success, error code on failure
@@ -796,10 +788,10 @@ EXPORT_SYMBOL(drm_atomic_plane_set_property);
* @property: the property to set
* @val: return location for the property value
*
- * This function handles generic/core properties and calls out to
- * driver's ->atomic_get_property() for driver properties. To ensure
- * consistent behavior you must call this function rather than the
- * driver hook directly.
+ * This function handles generic/core properties and calls out to driver's
+ * &drm_plane_funcs.atomic_get_property for driver properties. To ensure
+ * consistent behavior you must call this function rather than the driver hook
+ * directly.
*
* RETURNS:
* Zero on success, error code on failure
@@ -902,11 +894,11 @@ static int drm_atomic_plane_check(struct drm_plane *plane,
}
/* Check whether this plane supports the fb pixel format. */
- ret = drm_plane_check_pixel_format(plane, state->fb->pixel_format);
+ ret = drm_plane_check_pixel_format(plane, state->fb->format->format);
if (ret) {
struct drm_format_name_buf format_name;
DRM_DEBUG_ATOMIC("Invalid pixel format %s\n",
- drm_get_format_name(state->fb->pixel_format,
+ drm_get_format_name(state->fb->format->format,
&format_name));
return ret;
}
@@ -960,11 +952,11 @@ static void drm_atomic_plane_print_state(struct drm_printer *p,
drm_printf(p, "\tfb=%u\n", state->fb ? state->fb->base.id : 0);
if (state->fb) {
struct drm_framebuffer *fb = state->fb;
- int i, n = drm_format_num_planes(fb->pixel_format);
+ int i, n = fb->format->num_planes;
struct drm_format_name_buf format_name;
drm_printf(p, "\t\tformat=%s\n",
- drm_get_format_name(fb->pixel_format, &format_name));
+ drm_get_format_name(fb->format->format, &format_name));
drm_printf(p, "\t\t\tmodifier=0x%llx\n", fb->modifier);
drm_printf(p, "\t\tsize=%dx%d\n", fb->width, fb->height);
drm_printf(p, "\t\tlayers:\n");
@@ -1062,11 +1054,10 @@ EXPORT_SYMBOL(drm_atomic_get_connector_state);
* @property: the property to set
* @val: the new property value
*
- * Use this instead of calling connector->atomic_set_property directly.
- * This function handles generic/core properties and calls out to
- * driver's ->atomic_set_property() for driver properties. To ensure
- * consistent behavior you must call this function rather than the
- * driver hook directly.
+ * This function handles generic/core properties and calls out to driver's
+ * &drm_connector_funcs.atomic_set_property for driver properties. To ensure
+ * consistent behavior you must call this function rather than the driver hook
+ * directly.
*
* RETURNS:
* Zero on success, error code on failure
@@ -1141,10 +1132,10 @@ static void drm_atomic_connector_print_state(struct drm_printer *p,
* @property: the property to set
* @val: return location for the property value
*
- * This function handles generic/core properties and calls out to
- * driver's ->atomic_get_property() for driver properties. To ensure
- * consistent behavior you must call this function rather than the
- * driver hook directly.
+ * This function handles generic/core properties and calls out to driver's
+ * &drm_connector_funcs.atomic_get_property for driver properties. To ensure
+ * consistent behavior you must call this function rather than the driver hook
+ * directly.
*
* RETURNS:
* Zero on success, error code on failure
@@ -1317,12 +1308,11 @@ EXPORT_SYMBOL(drm_atomic_set_fb_for_plane);
* implicit or explicit fencing.
*
* This function will not set the fence to the state if it was set
- * via explicit fencing interfaces on the atomic ioctl. It will
- * all drope the reference to the fence as we not storing it
- * anywhere.
- *
- * Otherwise, if plane_state->fence is not set this function we
- * just set it with the received implict fence.
+ * via explicit fencing interfaces on the atomic ioctl. In that case it will
+ * drop the reference to the fence as we are not storing it anywhere.
+ * Otherwise, if &drm_plane_state.fence is not set this function we just set it
+ * with the received implicit fence. In both cases this function consumes a
+ * reference for @fence.
*/
void
drm_atomic_set_fence_for_plane(struct drm_plane_state *plane_state,
@@ -1417,6 +1407,7 @@ drm_atomic_add_affected_connectors(struct drm_atomic_state *state,
struct drm_mode_config *config = &state->dev->mode_config;
struct drm_connector *connector;
struct drm_connector_state *conn_state;
+ struct drm_connector_list_iter conn_iter;
int ret;
ret = drm_modeset_lock(&config->connection_mutex, state->acquire_ctx);
@@ -1430,14 +1421,18 @@ drm_atomic_add_affected_connectors(struct drm_atomic_state *state,
* Changed connectors are already in @state, so only need to look at the
* current configuration.
*/
- drm_for_each_connector(connector, state->dev) {
+ drm_connector_list_iter_get(state->dev, &conn_iter);
+ drm_for_each_connector_iter(connector, &conn_iter) {
if (connector->state->crtc != crtc)
continue;
conn_state = drm_atomic_get_connector_state(state, connector);
- if (IS_ERR(conn_state))
+ if (IS_ERR(conn_state)) {
+ drm_connector_list_iter_put(&conn_iter);
return PTR_ERR(conn_state);
+ }
}
+ drm_connector_list_iter_put(&conn_iter);
return 0;
}
@@ -1594,10 +1589,8 @@ EXPORT_SYMBOL(drm_atomic_check_only);
* more locks but encountered a deadlock. The caller must then do the usual w/w
* backoff dance and restart. All other errors are fatal.
*
- * Also note that on successful execution ownership of @state is transferred
- * from the caller of this function to the function itself. The caller must not
- * free or in any other way access @state. If the function fails then the caller
- * must clean up @state itself.
+ * This function will take its own reference on @state.
+ * Callers should always release their reference with drm_atomic_state_put().
*
* Returns:
* 0 on success, negative error code on failure.
@@ -1618,17 +1611,15 @@ int drm_atomic_commit(struct drm_atomic_state *state)
EXPORT_SYMBOL(drm_atomic_commit);
/**
- * drm_atomic_nonblocking_commit - atomic&nonblocking configuration commit
+ * drm_atomic_nonblocking_commit - atomic nonblocking commit
* @state: atomic configuration to check
*
* Note that this function can return -EDEADLK if the driver needed to acquire
* more locks but encountered a deadlock. The caller must then do the usual w/w
* backoff dance and restart. All other errors are fatal.
*
- * Also note that on successful execution ownership of @state is transferred
- * from the caller of this function to the function itself. The caller must not
- * free or in any other way access @state. If the function fails then the caller
- * must clean up @state itself.
+ * This function will take its own reference on @state.
+ * Callers should always release their reference with drm_atomic_state_put().
*
* Returns:
* 0 on success, negative error code on failure.
@@ -1692,6 +1683,7 @@ void drm_state_dump(struct drm_device *dev, struct drm_printer *p)
struct drm_plane *plane;
struct drm_crtc *crtc;
struct drm_connector *connector;
+ struct drm_connector_list_iter conn_iter;
if (!drm_core_check_feature(dev, DRIVER_ATOMIC))
return;
@@ -1702,8 +1694,10 @@ void drm_state_dump(struct drm_device *dev, struct drm_printer *p)
list_for_each_entry(crtc, &config->crtc_list, head)
drm_atomic_crtc_print_state(p, crtc->state);
- list_for_each_entry(connector, &config->connector_list, head)
+ drm_connector_list_iter_get(dev, &conn_iter);
+ drm_for_each_connector_iter(connector, &conn_iter)
drm_atomic_connector_print_state(p, connector->state);
+ drm_connector_list_iter_put(&conn_iter);
}
EXPORT_SYMBOL(drm_state_dump);
@@ -1732,13 +1726,6 @@ int drm_atomic_debugfs_init(struct drm_minor *minor)
ARRAY_SIZE(drm_atomic_debugfs_list),
minor->debugfs_root, minor);
}
-
-int drm_atomic_debugfs_cleanup(struct drm_minor *minor)
-{
- return drm_debugfs_remove_files(drm_atomic_debugfs_list,
- ARRAY_SIZE(drm_atomic_debugfs_list),
- minor);
-}
#endif
/*
@@ -1830,10 +1817,10 @@ static int atomic_set_prop(struct drm_atomic_state *state,
* @plane_mask: plane mask for planes that were updated.
* @ret: return value, can be -EDEADLK for a retry.
*
- * Before doing an update plane->old_fb is set to plane->fb,
- * but before dropping the locks old_fb needs to be set to NULL
- * and plane->fb updated. This is a common operation for each
- * atomic update, so this call is split off as a helper.
+ * Before doing an update &drm_plane.old_fb is set to &drm_plane.fb, but before
+ * dropping the locks old_fb needs to be set to NULL and plane->fb updated. This
+ * is a common operation for each atomic update, so this call is split off as a
+ * helper.
*/
void drm_atomic_clean_old_fb(struct drm_device *dev,
unsigned plane_mask,
@@ -1874,7 +1861,7 @@ EXPORT_SYMBOL(drm_atomic_clean_old_fb);
* As a contrast, with implicit fencing the kernel keeps track of any
* ongoing rendering, and automatically ensures that the atomic update waits
* for any pending rendering to complete. For shared buffers represented with
- * a struct &dma_buf this is tracked in &reservation_object structures.
+ * a &struct dma_buf this is tracked in &struct reservation_object.
* Implicit syncing is how Linux traditionally worked (e.g. DRI2/3 on X.org),
* whereas explicit fencing is what Android wants.
*
@@ -1890,7 +1877,7 @@ EXPORT_SYMBOL(drm_atomic_clean_old_fb);
* it will only check if the Sync File is a valid one.
*
* On the driver side the fence is stored on the @fence parameter of
- * struct &drm_plane_state. Drivers which also support implicit fencing
+ * &struct drm_plane_state. Drivers which also support implicit fencing
* should set the implicit fence using drm_atomic_set_fence_for_plane(),
* to make sure there's consistent behaviour between drivers in precedence
* of implicit vs. explicit fencing.
@@ -1909,7 +1896,7 @@ EXPORT_SYMBOL(drm_atomic_clean_old_fb);
* DRM_MODE_ATOMIC_TEST_ONLY flag the out fence will also be set to -1.
*
* Note that out-fences don't have a special interface to drivers and are
- * internally represented by a struct &drm_pending_vblank_event in struct
+ * internally represented by a &struct drm_pending_vblank_event in struct
* &drm_crtc_state, which is also used by the nonblocking atomic commit
* helpers and for the DRM event handling for existing userspace.
*/
@@ -2198,10 +2185,6 @@ retry:
goto out;
if (arg->flags & DRM_MODE_ATOMIC_TEST_ONLY) {
- /*
- * Unlike commit, check_only does not clean up state.
- * Below we call drm_atomic_state_put for it.
- */
ret = drm_atomic_check_only(state);
} else if (arg->flags & DRM_MODE_ATOMIC_NONBLOCK) {
ret = drm_atomic_nonblocking_commit(state);