Hi
On Mon, Oct 20, 2014 at 8:37 AM, Dave Airlie <airlied@xxxxxxxxx> wrote:
> From: Dave Airlie <airlied@xxxxxxxxxx>
>
> This takes the tiling info from the connector and
> exposes it to userspace, as a blob object in a
> connector property.
>
> The contents of the blob is ABI.
>
> Signed-off-by: Dave Airlie <airlied@xxxxxxxxxx>
> ---
> drivers/gpu/drm/drm_crtc.c | 36 ++++++++++++++++++++++++++++++++++++
> drivers/gpu/drm/i915/intel_dp_mst.c | 2 ++
> include/drm/drm_crtc.h | 4 ++++
> 3 files changed, 42 insertions(+)
>
> diff --git a/drivers/gpu/drm/drm_crtc.c b/drivers/gpu/drm/drm_crtc.c
> index 93135d4..81e867a 100644
> --- a/drivers/gpu/drm/drm_crtc.c
> +++ b/drivers/gpu/drm/drm_crtc.c
> @@ -1319,6 +1319,11 @@ static int drm_mode_create_standard_connector_properties(struct drm_device *dev)
> "PATH", 0);
> dev->mode_config.path_property = dev_path;
>
> + dev->mode_config.tile_property = drm_property_create(dev,
> + DRM_MODE_PROP_BLOB |
> + DRM_MODE_PROP_IMMUTABLE,
> + "TILE", 0);
> +
> return 0;
> }
>
> @@ -4004,6 +4009,37 @@ int drm_mode_connector_set_path_property(struct drm_connector *connector,
> }
> EXPORT_SYMBOL(drm_mode_connector_set_path_property);
>
> +int drm_mode_connector_set_tile_property(struct drm_connector *connector)
> +{
> + struct drm_device *dev = connector->dev;
> + int ret, size;
> + char tile[256];
> +
> + if (connector->tile_blob_ptr)
> + drm_property_destroy_blob(dev, connector->tile_blob_ptr);
> +
> + if (!connector->has_tile) {
> + connector->tile_blob_ptr = NULL;
> + ret = drm_object_property_set_value(&connector->base,
> + dev->mode_config.tile_property, 0);
> + return ret;
> + }
> +
> + snprintf(tile, 256, "%d:%d:%d:%d:%d:%d:%d:%d", connector->tile_group->id, connector->tile_is_single_monitor, connector->num_h_tile, connector->num_v_tile, connector->tile_h_loc, connector->tile_v_loc, connector->tile_h_size, connector->tile_v_size);
> + size = strlen(tile) + 1;
> +
> + connector->tile_blob_ptr = drm_property_create_blob(connector->dev,
> + size, tile);
> + if (!connector->tile_blob_ptr)
> + return -EINVAL;
> +
> + ret = drm_object_property_set_value(&connector->base,
> + dev->mode_config.tile_property,
> + connector->tile_blob_ptr->base.id);
I recently looked at property hotplugging and I think it needs the
same fix you pushed for connectors (drm_mode_object_get_reg() and
friends). I wanted to look at the same thing for brightness
properties, but didn't have time for that so far.
The race is mostly theoretical, but I think we should still try to fix it.
Thanks
David
> + return ret;
> +}
> +EXPORT_SYMBOL(drm_mode_connector_set_tile_property);
> +
> /**
> * drm_mode_connector_update_edid_property - update the edid property of a connector
> * @connector: drm connector
> diff --git a/drivers/gpu/drm/i915/intel_dp_mst.c b/drivers/gpu/drm/i915/intel_dp_mst.c
> index c66e73a..c5529ff 100644
> --- a/drivers/gpu/drm/i915/intel_dp_mst.c
> +++ b/drivers/gpu/drm/i915/intel_dp_mst.c
> @@ -422,6 +422,8 @@ static struct drm_connector *intel_dp_add_mst_connector(struct drm_dp_mst_topolo
> intel_dp_add_properties(intel_dp, connector);
>
> drm_object_attach_property(&connector->base, dev->mode_config.path_property, 0);
> + drm_object_attach_property(&connector->base, dev->mode_config.tile_property, 0);
> +
> drm_mode_connector_set_path_property(connector, pathprop);
> drm_reinit_primary_mode_group(dev);
> mutex_lock(&dev->mode_config.mutex);
> diff --git a/include/drm/drm_crtc.h b/include/drm/drm_crtc.h
> index d71b6d7..39d744b 100644
> --- a/include/drm/drm_crtc.h
> +++ b/include/drm/drm_crtc.h
> @@ -548,6 +548,8 @@ struct drm_connector {
>
> struct drm_property_blob *path_blob_ptr;
>
> + struct drm_property_blob *tile_blob_ptr;
> +
> uint8_t polled; /* DRM_CONNECTOR_POLL_* */
>
> /* requested DPMS state */
> @@ -838,6 +840,7 @@ struct drm_mode_config {
> struct drm_property *edid_property;
> struct drm_property *dpms_property;
> struct drm_property *path_property;
> + struct drm_property *tile_property;
> struct drm_property *plane_type_property;
>
> /* DVI-I properties */
> @@ -990,6 +993,7 @@ extern void drm_mode_config_cleanup(struct drm_device *dev);
>
> extern int drm_mode_connector_set_path_property(struct drm_connector *connector,
> char *path);
> +int drm_mode_connector_set_tile_property(struct drm_connector *connector);
> extern int drm_mode_connector_update_edid_property(struct drm_connector *connector,
> struct edid *edid);
>
> --
> 2.1.0
>
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