From 382aa3ceeb79165a9bdddc8f944de131c8cbf2dd Mon Sep 17 00:00:00 2001 From: Dave Airlie Date: Wed, 4 Jun 2008 13:49:43 +1000 Subject: 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 --- linux-core/drm_crtc.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) (limited to 'linux-core/drm_crtc.c') 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; -- cgit v1.2.3