Add new properties to specify x,y coordinates and width and height for writeback.
These are reset to 0 on duplicating state to provide robustness against accidental scaling.
Signed-off-by: Ben Davis ben.davis@arm.com --- drivers/gpu/drm/drm_atomic_state_helper.c | 6 +++ drivers/gpu/drm/drm_atomic_uapi.c | 17 ++++++++ drivers/gpu/drm/drm_writeback.c | 66 +++++++++++++++++++++++++++++++ include/drm/drm_connector.h | 23 +++++++++++ include/drm/drm_mode_config.h | 20 ++++++++++ 5 files changed, 132 insertions(+)
diff --git a/drivers/gpu/drm/drm_atomic_state_helper.c b/drivers/gpu/drm/drm_atomic_state_helper.c index 25a95b9..5973ca3 100644 --- a/drivers/gpu/drm/drm_atomic_state_helper.c +++ b/drivers/gpu/drm/drm_atomic_state_helper.c @@ -382,6 +382,12 @@ __drm_atomic_helper_connector_duplicate_state(struct drm_connector *connector,
/* Don't copy over a writeback job, they are used only once */ state->writeback_job = NULL; + + /* Auto clear writeback coordinates, should only be used once */ + state->writeback_dest_x = 0; + state->writeback_dest_y = 0; + state->writeback_dest_w = 0; + state->writeback_dest_h = 0; } EXPORT_SYMBOL(__drm_atomic_helper_connector_duplicate_state);
diff --git a/drivers/gpu/drm/drm_atomic_uapi.c b/drivers/gpu/drm/drm_atomic_uapi.c index d520a04..7d3fb7f 100644 --- a/drivers/gpu/drm/drm_atomic_uapi.c +++ b/drivers/gpu/drm/drm_atomic_uapi.c @@ -765,6 +765,14 @@ static int drm_atomic_connector_set_property(struct drm_connector *connector, return -EINVAL; } state->content_protection = val; + } else if (property == config->prop_writeback_dest_x) { + state->writeback_dest_x = val; + } else if (property == config->prop_writeback_dest_y) { + state->writeback_dest_y = val; + } else if (property == config->prop_writeback_dest_w) { + state->writeback_dest_w = val; + } else if (property == config->prop_writeback_dest_h) { + state->writeback_dest_h = val; } else if (property == config->writeback_fb_id_property) { struct drm_framebuffer *fb = drm_framebuffer_lookup(dev, NULL, val); int ret = drm_atomic_set_writeback_fb_for_connector(state, fb); @@ -837,6 +845,15 @@ drm_atomic_connector_get_property(struct drm_connector *connector, *val = state->scaling_mode; } else if (property == connector->content_protection_property) { *val = state->content_protection; + } else if (property == config->prop_writeback_dest_x) { + /* Auto clear wb co-ordinates to prevent accidental scaling */ + *val = 0; + } else if (property == config->prop_writeback_dest_y) { + *val = 0; + } else if (property == config->prop_writeback_dest_w) { + *val = 0; + } else if (property == config->prop_writeback_dest_h) { + *val = 0; } else if (property == config->writeback_fb_id_property) { /* Writeback framebuffer is one-shot, write and forget */ *val = 0; diff --git a/drivers/gpu/drm/drm_writeback.c b/drivers/gpu/drm/drm_writeback.c index c20e6fe..7c53abd 100644 --- a/drivers/gpu/drm/drm_writeback.c +++ b/drivers/gpu/drm/drm_writeback.c @@ -74,6 +74,30 @@ * applications making use of writeback connectors *always* retrieve an * out-fence for the commit and use it appropriately. * From userspace, this property will always read as zero. + * + * "WRITEBACK_DEST_X": + * The x-coordinate to write back onto the output writeback framebuffer. + * 0 acts as default. If non-zero the composition will be translated + * horizontally in the buffer by the amount specified. This is the case + * even if not scaling on writeback. + * + * "WRITEBACK_DEST_Y": + * The y-coordinate to write back onto the output writeback framebuffer. + * 0 acts as default. If non-zero the composition will be translated + * vertically in the buffer by the amount specified. This is the case even + * if not scaling on writeback. + * + * "WRITEBACK_DEST_W": + * The width of the composition to write back. 0 acts as default. If + * non-zero the composition will be scaled to match the given width. + * If scaling both WRITEBACK_DEST_W and WRITEBACK_DEST_H should be + * set as non-zero. + * + * "WRITEBACK_DEST_H": + * The height of the composition to write back. 0 acts as default. If + * non-zero the composition will be scaled to match the given height. + * If scaling both WRITEBACK_DEST_W and WRITEBACK_DEST_H should be + * set as non-zero. */
#define fence_to_wb_connector(x) container_of(x->lock, \ @@ -141,6 +165,38 @@ static int create_writeback_properties(struct drm_device *dev) dev->mode_config.writeback_out_fence_ptr_property = prop; }
+ if (!dev->mode_config.prop_writeback_dest_x) { + prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC, + "WRITEBACK_DEST_X", 0, UINT_MAX); + if (!prop) + return -ENOMEM; + dev->mode_config.prop_writeback_dest_x = prop; + } + + if (!dev->mode_config.prop_writeback_dest_y) { + prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC, + "WRITEBACK_DEST_Y", 0, UINT_MAX); + if (!prop) + return -ENOMEM; + dev->mode_config.prop_writeback_dest_y = prop; + } + + if (!dev->mode_config.prop_writeback_dest_w) { + prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC, + "WRITEBACK_DEST_W", 0, UINT_MAX); + if (!prop) + return -ENOMEM; + dev->mode_config.prop_writeback_dest_w = prop; + } + + if (!dev->mode_config.prop_writeback_dest_h) { + prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC, + "WRITEBACK_DEST_H", 0, UINT_MAX); + if (!prop) + return -ENOMEM; + dev->mode_config.prop_writeback_dest_h = prop; + } + return 0; }
@@ -225,6 +281,16 @@ int drm_writeback_connector_init(struct drm_device *dev, drm_object_attach_property(&connector->base, config->writeback_pixel_formats_property, blob->base.id); + + drm_object_attach_property(&connector->base, + config->prop_writeback_dest_x, 0); + drm_object_attach_property(&connector->base, + config->prop_writeback_dest_y, 0); + drm_object_attach_property(&connector->base, + config->prop_writeback_dest_w, 0); + drm_object_attach_property(&connector->base, + config->prop_writeback_dest_h, 0); + wb_connector->pixel_formats_blob_ptr = blob;
return 0; diff --git a/include/drm/drm_connector.h b/include/drm/drm_connector.h index 8fe22ab..4c7701e 100644 --- a/include/drm/drm_connector.h +++ b/include/drm/drm_connector.h @@ -515,6 +515,25 @@ struct drm_connector_state { */ struct drm_writeback_job *writeback_job;
+ /** @writeback_dest_x: x coord to write plane to on wb buffer + * The written back composition will be translated by this + * amount horizontally on the output buffer. + */ + /** @writeback_dest_y: y coord to write plane to on wb buffer + * The written back composition will be translated by this + * amount vertically on the output buffer. + */ + /** @writeback_dest_w: width of plane to write to wb buffer + * The written back composition will be scaled to match this + * height dimension on the output buffer. Ignored if 0. + */ + /** @writeback_dest_h: height of plane to write to wb buffer + * The written back composition will be scaled to match this + * width dimension on the output buffer. Ignored if 0. + */ + uint32_t writeback_dest_x, writeback_dest_y, + writeback_dest_w, writeback_dest_h; + /** * @max_requested_bpc: Connector property to limit the maximum bit * depth of the pixels. @@ -704,6 +723,10 @@ struct drm_connector_funcs { * cleaned up by calling the @atomic_destroy_state hook in this * structure. * + * State relating to writeback including writeback_job and + * writeback_dest_x,y,w,h is not intended to be reused and so will not + * be duplicated and will instead be reset to NULL/0 respectively. + * * This callback is mandatory for atomic drivers. * * Atomic drivers which don't subclass &struct drm_connector_state should use diff --git a/include/drm/drm_mode_config.h b/include/drm/drm_mode_config.h index 7f60e8e..40ce4a8 100644 --- a/include/drm/drm_mode_config.h +++ b/include/drm/drm_mode_config.h @@ -622,6 +622,26 @@ struct drm_mode_config { */ struct drm_property *prop_crtc_h; /** + * @prop_writeback_dest_x: Writeback connector property for the crtc + * output destination position in the writeback buffer. + */ + struct drm_property *prop_writeback_dest_x; + /** + * @prop_writeback_dest_y: Writeback connector property for the crtc + * output destination position in the writeback buffer. + */ + struct drm_property *prop_writeback_dest_y; + /** + * @prop_writeback_dest_w: Writeback connector property for the crtc + * output destination position in the writeback buffer. + */ + struct drm_property *prop_writeback_dest_w; + /** + * @prop_writeback_dest_h: Writeback connector property for the crtc + * output destination position in the writeback buffer. + */ + struct drm_property *prop_writeback_dest_h; + /** * @prop_fb_id: Default atomic plane property to specify the * &drm_framebuffer. */