diff options
Diffstat (limited to 'drivers/gpu/drm/drm_atomic_helper.c')
| -rw-r--r-- | drivers/gpu/drm/drm_atomic_helper.c | 87 |
1 files changed, 48 insertions, 39 deletions
diff --git a/drivers/gpu/drm/drm_atomic_helper.c b/drivers/gpu/drm/drm_atomic_helper.c index 54e2ae614dcc..40ac19848034 100644 --- a/drivers/gpu/drm/drm_atomic_helper.c +++ b/drivers/gpu/drm/drm_atomic_helper.c @@ -29,7 +29,6 @@ #include <drm/drm_atomic.h> #include <drm/drm_atomic_uapi.h> #include <drm/drm_plane_helper.h> -#include <drm/drm_crtc_helper.h> #include <drm/drm_atomic_helper.h> #include <drm/drm_writeback.h> #include <drm/drm_damage_helper.h> @@ -331,10 +330,17 @@ update_connector_routing(struct drm_atomic_state *state, * Since the connector can be unregistered at any point during an * atomic check or commit, this is racy. But that's OK: all we care * about is ensuring that userspace can't do anything but shut off the - * display on a connector that was destroyed after its been notified, + * display on a connector that was destroyed after it's been notified, * not before. + * + * Additionally, we also want to ignore connector registration when + * we're trying to restore an atomic state during system resume since + * there's a chance the connector may have been destroyed during the + * process, but it's better to ignore that then cause + * drm_atomic_helper_resume() to fail. */ - if (drm_connector_is_unregistered(connector) && crtc_state->active) { + if (!state->duplicated && drm_connector_is_unregistered(connector) && + crtc_state->active) { DRM_DEBUG_ATOMIC("[CONNECTOR:%d:%s] is not registered\n", connector->base.id, connector->name); return -EINVAL; @@ -686,7 +692,7 @@ drm_atomic_helper_check_modeset(struct drm_device *dev, /* * After all the routing has been prepared we need to add in any - * connector which is itself unchanged, but who's crtc changes it's + * connector which is itself unchanged, but whose crtc changes its * configuration. This must be done before calling mode_fixup in case a * crtc only changed its mode but has the same set of connectors. */ @@ -1602,6 +1608,15 @@ int drm_atomic_helper_async_check(struct drm_device *dev, old_plane_state->crtc != new_plane_state->crtc) return -EINVAL; + /* + * FIXME: Since prepare_fb and cleanup_fb are always called on + * the new_plane_state for async updates we need to block framebuffer + * changes. This prevents use of a fb that's been cleaned up and + * double cleanups from occuring. + */ + if (old_plane_state->fb != new_plane_state->fb) + return -EINVAL; + funcs = plane->helper_private; if (!funcs->atomic_async_update) return -EINVAL; @@ -1671,7 +1686,7 @@ EXPORT_SYMBOL(drm_atomic_helper_async_commit); * drm_atomic_helper_setup_commit() and related functions. * * Committing the actual hardware state is done through the - * &drm_mode_config_helper_funcs.atomic_commit_tail callback, or it's default + * &drm_mode_config_helper_funcs.atomic_commit_tail callback, or its default * implementation drm_atomic_helper_commit_tail(). * * RETURNS: @@ -1894,7 +1909,7 @@ crtc_or_fake_commit(struct drm_atomic_state *state, struct drm_crtc *crtc) * functions. drm_atomic_helper_wait_for_dependencies() must be called before * actually committing the hardware state, and for nonblocking commits this call * must be placed in the async worker. See also drm_atomic_helper_swap_state() - * and it's stall parameter, for when a driver's commit hooks look at the + * and its stall parameter, for when a driver's commit hooks look at the * &drm_crtc.state, &drm_plane.state or &drm_connector.state pointer directly. * * Completion of the hardware commit step must be signalled using @@ -3024,9 +3039,31 @@ commit: return 0; } -static int __drm_atomic_helper_disable_all(struct drm_device *dev, - struct drm_modeset_acquire_ctx *ctx, - bool clean_old_fbs) +/** + * drm_atomic_helper_disable_all - disable all currently active outputs + * @dev: DRM device + * @ctx: lock acquisition context + * + * Loops through all connectors, finding those that aren't turned off and then + * turns them off by setting their DPMS mode to OFF and deactivating the CRTC + * that they are connected to. + * + * This is used for example in suspend/resume to disable all currently active + * functions when suspending. If you just want to shut down everything at e.g. + * driver unload, look at drm_atomic_helper_shutdown(). + * + * Note that if callers haven't already acquired all modeset locks this might + * return -EDEADLK, which must be handled by calling drm_modeset_backoff(). + * + * Returns: + * 0 on success or a negative error code on failure. + * + * See also: + * drm_atomic_helper_suspend(), drm_atomic_helper_resume() and + * drm_atomic_helper_shutdown(). + */ +int drm_atomic_helper_disable_all(struct drm_device *dev, + struct drm_modeset_acquire_ctx *ctx) { struct drm_atomic_state *state; struct drm_connector_state *conn_state; @@ -3084,35 +3121,6 @@ free: drm_atomic_state_put(state); return ret; } - -/** - * drm_atomic_helper_disable_all - disable all currently active outputs - * @dev: DRM device - * @ctx: lock acquisition context - * - * Loops through all connectors, finding those that aren't turned off and then - * turns them off by setting their DPMS mode to OFF and deactivating the CRTC - * that they are connected to. - * - * This is used for example in suspend/resume to disable all currently active - * functions when suspending. If you just want to shut down everything at e.g. - * driver unload, look at drm_atomic_helper_shutdown(). - * - * Note that if callers haven't already acquired all modeset locks this might - * return -EDEADLK, which must be handled by calling drm_modeset_backoff(). - * - * Returns: - * 0 on success or a negative error code on failure. - * - * See also: - * drm_atomic_helper_suspend(), drm_atomic_helper_resume() and - * drm_atomic_helper_shutdown(). - */ -int drm_atomic_helper_disable_all(struct drm_device *dev, - struct drm_modeset_acquire_ctx *ctx) -{ - return __drm_atomic_helper_disable_all(dev, ctx, false); -} EXPORT_SYMBOL(drm_atomic_helper_disable_all); /** @@ -3133,7 +3141,7 @@ void drm_atomic_helper_shutdown(struct drm_device *dev) DRM_MODESET_LOCK_ALL_BEGIN(dev, ctx, 0, ret); - ret = __drm_atomic_helper_disable_all(dev, &ctx, true); + ret = drm_atomic_helper_disable_all(dev, &ctx); if (ret) DRM_ERROR("Disabling all crtc's during unload failed with %i\n", ret); @@ -3181,6 +3189,7 @@ drm_atomic_helper_duplicate_state(struct drm_device *dev, return ERR_PTR(-ENOMEM); state->acquire_ctx = ctx; + state->duplicated = true; drm_for_each_crtc(crtc, dev) { struct drm_crtc_state *crtc_state; |