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drm/atomic-helpers: Export drm_atomic_helper_update_legacy_modeset_state

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This is useful for drivers which have their own modeset infrastructure
but want to reuse most of the legacy state frobbery from the helpers.
i915 wants this.

v2: Add header declaration.

Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Reviewed-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
This commit is contained in:
Daniel Vetter 2015-05-12 15:27:37 +02:00
parent 3d51d2d2f5
commit 4c18d3010b
2 changed files with 24 additions and 3 deletions
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23
drivers/gpu/drm/drm_atomic_helper.c
View file

@ -619,8 +619,22 @@ disable_outputs(struct drm_device *dev, struct drm_atomic_state *old_state)
}
}
static void
set_routing_links(struct drm_device *dev, struct drm_atomic_state *old_state)
/**
* drm_atomic_helper_update_legacy_modeset_state - update legacy modeset state
* @dev: DRM device
* @old_state: atomic state object with old state structures
*
* This function updates all the various legacy modeset state pointers in
* connectors, encoders and crtcs. It also updates the timestamping constants
* used for precise vblank timestamps by calling
* drm_calc_timestamping_constants().
*
* Drivers can use this for building their own atomic commit if they don't have
* a pure helper-based modeset implementation.
*/
void
drm_atomic_helper_update_legacy_modeset_state(struct drm_device *dev,
struct drm_atomic_state *old_state)
{
struct drm_connector *connector;
struct drm_connector_state *old_conn_state;
@ -663,6 +677,7 @@ set_routing_links(struct drm_device *dev, struct drm_atomic_state *old_state)
&crtc->state->adjusted_mode);
}
}
EXPORT_SYMBOL(drm_atomic_helper_update_legacy_modeset_state);
static void
crtc_set_mode(struct drm_device *dev, struct drm_atomic_state *old_state)
@ -741,7 +756,9 @@ void drm_atomic_helper_commit_modeset_disables(struct drm_device *dev,
struct drm_atomic_state *old_state)
{
disable_outputs(dev, old_state);
set_routing_links(dev, old_state);
drm_atomic_helper_update_legacy_modeset_state(dev, old_state);
crtc_set_mode(dev, old_state);
}
EXPORT_SYMBOL(drm_atomic_helper_commit_modeset_disables);

4
include/drm/drm_atomic_helper.h
View file

@ -43,6 +43,10 @@ int drm_atomic_helper_commit(struct drm_device *dev,
void drm_atomic_helper_wait_for_vblanks(struct drm_device *dev,
struct drm_atomic_state *old_state);
void
drm_atomic_helper_update_legacy_modeset_state(struct drm_device *dev,
struct drm_atomic_state *old_state);
void drm_atomic_helper_commit_modeset_disables(struct drm_device *dev,
struct drm_atomic_state *state);
void drm_atomic_helper_commit_modeset_enables(struct drm_device *dev,