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drm: document the drm_mode_group structure

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This is actually a core structure with a big future ahead of it.  Make
it a little less mysterious.

Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Jesse Barnes 2011-11-07 12:03:21 -08:00 committed by Dave Airlie
parent 550cebcdb5
commit c1aaca237c
1 changed files with 13 additions and 0 deletions
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13
include/drm/drm_crtc.h
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@ -690,6 +690,19 @@ struct drm_mode_config_funcs {
void (*output_poll_changed)(struct drm_device *dev);
};
/**
* drm_mode_group - group of mode setting resources for potential sub-grouping
* @num_crtcs: CRTC count
* @num_encoders: encoder count
* @num_connectors: connector count
* @id_list: list of KMS object IDs in this group
*
* Currently this simply tracks the global mode setting state. But in the
* future it could allow groups of objects to be set aside into independent
* control groups for use by different user level processes (e.g. two X servers
* running simultaneously on different heads, each with their own mode
* configuration and freedom of mode setting).
*/
struct drm_mode_group {
uint32_t num_crtcs;
uint32_t num_encoders;