diff options
| author | Dave Airlie <airlied@redhat.com> | 2008-06-04 13:49:43 +1000 |
|---|---|---|
| committer | Dave Airlie <airlied@redhat.com> | 2008-06-04 13:50:51 +1000 |
| commit | 382aa3ceeb79165a9bdddc8f944de131c8cbf2dd (patch) | |
| tree | 1c61f11da47cd9bfb7b9b34c0fa3cdcf888e3e7c /linux-core | |
| parent | 9f31bd09c1e748f72a30f6a0861cd72d93258992 (diff) | |
drm: introduce generation counter to interface.
Idea being if you want to add new crtc/output/encoder dynamically later,
you just increase the generation counter and userspace should re-read
all the resources
Diffstat (limited to 'linux-core')
| -rw-r--r-- | linux-core/drm_crtc.c | 6 | ||||
| -rw-r--r-- | linux-core/drm_crtc.h | 3 |
2 files changed, 8 insertions, 1 deletions
diff --git a/linux-core/drm_crtc.c b/linux-core/drm_crtc.c index d2060fd1..4c6afd16 100644 --- a/linux-core/drm_crtc.c +++ b/linux-core/drm_crtc.c @@ -571,6 +571,7 @@ void drm_mode_config_init(struct drm_device *dev) drm_mode_create_standard_connector_properties(dev); /* Just to be sure */ + dev->mode_config.current_generation = 0; dev->mode_config.num_fb = 0; dev->mode_config.num_connector = 0; dev->mode_config.num_crtc = 0; @@ -801,6 +802,7 @@ int drm_mode_getresources(struct drm_device *dev, card_res->min_height = dev->mode_config.min_height; card_res->max_width = dev->mode_config.max_width; card_res->min_width = dev->mode_config.min_width; + card_res->generation = dev->mode_config.current_generation; /* handle this in 4 parts */ /* FBs */ @@ -943,7 +945,7 @@ int drm_mode_getcrtc(struct drm_device *dev, crtc_resp->x = crtc->x; crtc_resp->y = crtc->y; crtc_resp->gamma_size = crtc->gamma_size; - + crtc_resp->generation = dev->mode_config.current_generation; if (crtc->fb) crtc_resp->fb_id = crtc->fb->base.id; else @@ -1032,6 +1034,7 @@ int drm_mode_getconnector(struct drm_device *dev, connector->funcs->fill_modes(connector, dev->mode_config.max_width, dev->mode_config.max_height); } + out_resp->generation = dev->mode_config.current_generation; out_resp->connector_type = connector->connector_type; out_resp->connector_type_id = connector->connector_type_id; out_resp->mm_width = connector->display_info.width_mm; @@ -1120,6 +1123,7 @@ int drm_mode_getencoder(struct drm_device *dev, enc_resp->crtc = encoder->crtc->base.id; else enc_resp->crtc = 0; + enc_resp->generation = dev->mode_config.current_generation; enc_resp->encoder_type = encoder->encoder_type; enc_resp->encoder_id = encoder->base.id; enc_resp->crtcs = encoder->possible_crtcs; diff --git a/linux-core/drm_crtc.h b/linux-core/drm_crtc.h index c92c59bf..f3953692 100644 --- a/linux-core/drm_crtc.h +++ b/linux-core/drm_crtc.h @@ -554,6 +554,9 @@ struct drm_mode_config { struct list_head property_list; + /* currently in use generation id */ + int current_generation; + int min_width, min_height; int max_width, max_height; struct drm_mode_config_funcs *funcs; |