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drm/komeda: Add komeda_kms_check 

Implement komeda_kms_check to add all affected_planes (even unchanged) to
drm_atomic_state. since komeda need to re-calculate the resources
assumption in every commit.

v2: Rebase

Signed-off-by: James Qian Wang (Arm Technology China) <james.qian.wang@arm.com>
Signed-off-by: Liviu Dudau <liviu.dudau@arm.com>
This commit is contained in:
james qian wang (Arm Technology China) 2019-01-22 11:11:44 +00:00 committed by Liviu Dudau
parent d29da5d8cd
commit 42c729418d
1 changed files with 29 additions and 1 deletions
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30
drivers/gpu/drm/arm/display/komeda/komeda_kms.c
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@ -100,9 +100,37 @@ static const struct drm_mode_config_helper_funcs komeda_mode_config_helpers = {
.atomic_commit_tail = komeda_kms_commit_tail,
};
static int komeda_kms_check(struct drm_device *dev,
struct drm_atomic_state *state)
{
struct drm_crtc *crtc;
struct drm_crtc_state *old_crtc_st, *new_crtc_st;
int i, err;
err = drm_atomic_helper_check_modeset(dev, state);
if (err)
return err;
/* komeda need to re-calculate resource assumption in every commit
* so need to add all affected_planes (even unchanged) to
* drm_atomic_state.
*/
for_each_oldnew_crtc_in_state(state, crtc, old_crtc_st, new_crtc_st, i) {
err = drm_atomic_add_affected_planes(state, crtc);
if (err)
return err;
}
err = drm_atomic_helper_check_planes(dev, state);
if (err)
return err;
return 0;
}
static const struct drm_mode_config_funcs komeda_mode_config_funcs = {
.fb_create = komeda_fb_create,
.atomic_check = drm_atomic_helper_check,
.atomic_check = komeda_kms_check,
.atomic_commit = drm_atomic_helper_commit,
};