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| author | Pandiyan, Dhinakaran <dhinakaran.pandiyan@intel.com> | 2017-03-16 00:10:26 -0700 |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2017-03-22 21:47:44 +0100 |
| commit | 1e797f556c616a42f1e039b1ff1d3c58f61b6104 (patch) | |
| tree | ea9ece0eeb34cfd1a0392faa0b5b680fa8c7df1c /include/drm/drm_dp_mst_helper.h | |
| parent | feb2c3bc331576ed4e0bf9608966351b1bb9b622 (diff) | |
| download | lwn-1e797f556c616a42f1e039b1ff1d3c58f61b6104.tar.gz lwn-1e797f556c616a42f1e039b1ff1d3c58f61b6104.zip | |
drm/dp: Split drm_dp_mst_allocate_vcpi
drm_dp_mst_allocate_vcpi() apart from setting up the vcpi structure,
also finds if there are enough slots available. This check is a duplicate
of that implemented in drm_dp_mst_find_vcpi_slots(). Let's move this check
out and reuse the existing drm_dp_mst_find_vcpi_slots() function to check
if there are enough vcpi slots before allocating them.
This brings the check to one place. Additionally drivers that will use MST
state tracking for atomic modesets can use the atomic version of
find_vcpi_slots() and reuse drm_dp_mst_allocate_vcpi()
Signed-off-by: Dhinakaran Pandiyan <dhinakaran.pandiyan@intel.com>
Reviewed-by: Dave Airlie <airlied@redhat.com>
Reviewed-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/1489648231-30700-4-git-send-email-dhinakaran.pandiyan@intel.com
Diffstat (limited to 'include/drm/drm_dp_mst_helper.h')
| -rw-r--r-- | include/drm/drm_dp_mst_helper.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/include/drm/drm_dp_mst_helper.h b/include/drm/drm_dp_mst_helper.h index d8365110eb23..5b024764666c 100644 --- a/include/drm/drm_dp_mst_helper.h +++ b/include/drm/drm_dp_mst_helper.h @@ -567,7 +567,8 @@ struct edid *drm_dp_mst_get_edid(struct drm_connector *connector, struct drm_dp_ int drm_dp_calc_pbn_mode(int clock, int bpp); -bool drm_dp_mst_allocate_vcpi(struct drm_dp_mst_topology_mgr *mgr, struct drm_dp_mst_port *port, int pbn, int *slots); +bool drm_dp_mst_allocate_vcpi(struct drm_dp_mst_topology_mgr *mgr, + struct drm_dp_mst_port *port, int pbn, int slots); int drm_dp_mst_get_vcpi_slots(struct drm_dp_mst_topology_mgr *mgr, struct drm_dp_mst_port *port); |