iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

drm/amd/display: Move disable interrupt into commit tail

Browse Source 
[Why&How]
Since there is no need for accessing crtc state in the interrupt
handler, interrupts need not be disabled well in advance, and
can be moved to commit_tail where it should be.

Reviewed-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Signed-off-by: Aurabindo Pillai <aurabindo.pillai@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Aurabindo Pillai 2020-09-11 15:10:11 -04:00 committed by Alex Deucher
parent 585d450c76
commit 6d90a208cf
1 changed files with 14 additions and 33 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

47
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
View File

@ -7437,39 +7437,6 @@ static int amdgpu_dm_atomic_commit(struct drm_device *dev,
struct drm_atomic_state *state,
bool nonblock)
{
struct drm_crtc *crtc;
struct drm_crtc_state *old_crtc_state, *new_crtc_state;
struct dm_crtc_state *dm_old_crtc_state;
struct amdgpu_device *adev = drm_to_adev(dev);
int i;
/*
* We evade vblank and pflip interrupts on CRTCs that are undergoing
* a modeset, being disabled, or have no active planes.
*
* It's done in atomic commit rather than commit tail for now since
* some of these interrupt handlers access the current CRTC state and
* potentially the stream pointer itself.
*
* Since the atomic state is swapped within atomic commit and not within
* commit tail this would leave to new state (that hasn't been committed yet)
* being accesssed from within the handlers.
*
* TODO: Fix this so we can do this in commit tail and not have to block
* in atomic check.
*/
for_each_oldnew_crtc_in_state(state, crtc, old_crtc_state, new_crtc_state, i) {
struct amdgpu_crtc *acrtc = to_amdgpu_crtc(crtc);
dm_old_crtc_state = to_dm_crtc_state(old_crtc_state);
if (old_crtc_state->active &&
(!new_crtc_state->active ||
drm_atomic_crtc_needs_modeset(new_crtc_state))) {
manage_dm_interrupts(adev, acrtc, false);
dc_stream_release(dm_old_crtc_state->stream);
}
}
/*
* Add check here for SoC's that support hardware cursor plane, to
* unset legacy_cursor_update
@ -7519,6 +7486,20 @@ static void amdgpu_dm_atomic_commit_tail(struct drm_atomic_state *state)
dc_resource_state_copy_construct_current(dm->dc, dc_state);
}
for_each_oldnew_crtc_in_state (state, crtc, old_crtc_state,
new_crtc_state, i) {
struct amdgpu_crtc *acrtc = to_amdgpu_crtc(crtc);
dm_old_crtc_state = to_dm_crtc_state(old_crtc_state);
if (old_crtc_state->active &&
(!new_crtc_state->active ||
drm_atomic_crtc_needs_modeset(new_crtc_state))) {
manage_dm_interrupts(adev, acrtc, false);
dc_stream_release(dm_old_crtc_state->stream);
}
}
/* update changed items */
for_each_oldnew_crtc_in_state(state, crtc, old_crtc_state, new_crtc_state, i) {
struct amdgpu_crtc *acrtc = to_amdgpu_crtc(crtc);