diff options
| -rw-r--r-- | drivers/gpu/drm/drm_crtc_internal.h | 1 | ||||
| -rw-r--r-- | drivers/gpu/drm/drm_drv.c | 3 | ||||
| -rw-r--r-- | drivers/gpu/drm/drm_mode_config.c | 19 | ||||
| -rw-r--r-- | include/drm/drm_encoder.h | 4 |
4 files changed, 26 insertions, 1 deletions
diff --git a/drivers/gpu/drm/drm_crtc_internal.h b/drivers/gpu/drm/drm_crtc_internal.h index feba683c12a6..d2d43e0b060b 100644 --- a/drivers/gpu/drm/drm_crtc_internal.h +++ b/drivers/gpu/drm/drm_crtc_internal.h @@ -82,6 +82,7 @@ int drm_mode_setcrtc(struct drm_device *dev, /* drm_mode_config.c */ int drm_modeset_register_all(struct drm_device *dev); void drm_modeset_unregister_all(struct drm_device *dev); +void drm_mode_config_validate(struct drm_device *dev); /* drm_modes.c */ const char *drm_get_mode_status_name(enum drm_mode_status status); diff --git a/drivers/gpu/drm/drm_drv.c b/drivers/gpu/drm/drm_drv.c index 7b1a628d1f6e..65a0acb79323 100644 --- a/drivers/gpu/drm/drm_drv.c +++ b/drivers/gpu/drm/drm_drv.c @@ -946,6 +946,9 @@ int drm_dev_register(struct drm_device *dev, unsigned long flags) struct drm_driver *driver = dev->driver; int ret; + if (!driver->load) + drm_mode_config_validate(dev); + if (drm_dev_needs_global_mutex(dev)) mutex_lock(&drm_global_mutex); diff --git a/drivers/gpu/drm/drm_mode_config.c b/drivers/gpu/drm/drm_mode_config.c index 08e6eff6a179..75e357c7e84d 100644 --- a/drivers/gpu/drm/drm_mode_config.c +++ b/drivers/gpu/drm/drm_mode_config.c @@ -532,3 +532,22 @@ void drm_mode_config_cleanup(struct drm_device *dev) drm_modeset_lock_fini(&dev->mode_config.connection_mutex); } EXPORT_SYMBOL(drm_mode_config_cleanup); + +/* + * For some reason we want the encoder itself included in + * possible_clones. Make life easy for drivers by allowing them + * to leave possible_clones unset if no cloning is possible. + */ +static void fixup_encoder_possible_clones(struct drm_encoder *encoder) +{ + if (encoder->possible_clones == 0) + encoder->possible_clones = drm_encoder_mask(encoder); +} + +void drm_mode_config_validate(struct drm_device *dev) +{ + struct drm_encoder *encoder; + + drm_for_each_encoder(encoder, dev) + fixup_encoder_possible_clones(encoder); +} diff --git a/include/drm/drm_encoder.h b/include/drm/drm_encoder.h index 4370e039c015..34b7213bfab6 100644 --- a/include/drm/drm_encoder.h +++ b/include/drm/drm_encoder.h @@ -159,7 +159,9 @@ struct drm_encoder { * encoders can be used in a cloned configuration, they both should have * each another bits set. * - * In reality almost every driver gets this wrong. + * As an exception to the above rule if the driver doesn't implement + * any cloning it can leave @possible_clones set to 0. The core will + * automagically fix this up by setting the bit for the encoder itself. * * Note that since encoder objects can't be hotplugged the assigned indices * are stable and hence known before registering all objects. |