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disp: msm: sde: remove vblank support for writeback

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Avoid drm vblank on/off for virtual displays to allow drm framework to
ignore the vblank requests. Vblanks are unnecessary for writeback as it
is triggered based on the frame-updates and not on any defined interval.
In addition, avoid vblank callback registration for concurrent writeback
encoder.

Change-Id: I205734e2e3076469dc7f775566cf5e104bac4082
Signed-off-by: Veera Sundaram Sankaran <veeras@codeaurora.org>
This commit is contained in:
Veera Sundaram Sankaran
2021-06-24 14:14:26 -07:00
parent 1428cbb7d0
commit 30d5ac5184
3 changed files with 24 additions and 21 deletions
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36
msm/sde/sde_crtc.c
View File

@@ -4133,25 +4133,23 @@ static int _sde_crtc_vblank_enable(
return ret;
mutex_lock(&sde_crtc->crtc_lock);
drm_for_each_encoder_mask(enc, crtc->dev,
sde_crtc->cached_encoder_mask) {
SDE_EVT32(DRMID(crtc), DRMID(enc));
drm_for_each_encoder_mask(enc, crtc->dev, sde_crtc->cached_encoder_mask) {
if (sde_encoder_in_clone_mode(enc))
continue;
sde_encoder_register_vblank_callback(enc,
sde_crtc_vblank_cb, (void *)crtc);
sde_encoder_register_vblank_callback(enc, sde_crtc_vblank_cb, (void *)crtc);
}
mutex_unlock(&sde_crtc->crtc_lock);
} else {
mutex_lock(&sde_crtc->crtc_lock);
drm_for_each_encoder_mask(enc, crtc->dev,
sde_crtc->cached_encoder_mask) {
SDE_EVT32(DRMID(crtc), DRMID(enc));
drm_for_each_encoder_mask(enc, crtc->dev, sde_crtc->cached_encoder_mask) {
if (sde_encoder_in_clone_mode(enc))
continue;
sde_encoder_register_vblank_callback(enc, NULL, NULL);
}
mutex_unlock(&sde_crtc->crtc_lock);
pm_runtime_put_sync(crtc->dev->dev);
}
@@ -4478,6 +4476,7 @@ static void sde_crtc_disable(struct drm_crtc *crtc)
u32 power_on;
bool in_cont_splash = false;
int ret, i;
enum sde_intf_mode intf_mode;
if (!crtc || !crtc->dev || !crtc->dev->dev_private || !crtc->state) {
SDE_ERROR("invalid crtc\n");
@@ -4501,7 +4500,10 @@ static void sde_crtc_disable(struct drm_crtc *crtc)
SDE_DEBUG("crtc%d\n", crtc->base.id);
drm_crtc_vblank_off(crtc);
/* avoid vblank on/off for virtual display */
intf_mode = sde_crtc_get_intf_mode(crtc, crtc->state);
if ((intf_mode != INTF_MODE_WB_BLOCK) && (intf_mode != INTF_MODE_WB_LINE))
drm_crtc_vblank_off(crtc);
mutex_lock(&sde_crtc->crtc_lock);
SDE_EVT32_VERBOSE(DRMID(crtc));
@@ -4609,6 +4611,7 @@ static void sde_crtc_enable(struct drm_crtc *crtc,
int ret, i;
struct sde_crtc_state *cstate;
struct msm_display_mode *msm_mode;
enum sde_intf_mode intf_mode;
if (!crtc || !crtc->dev || !crtc->dev->dev_private) {
SDE_ERROR("invalid crtc\n");
@@ -4633,9 +4636,14 @@ static void sde_crtc_enable(struct drm_crtc *crtc,
if (!sde_crtc->enabled) {
/* cache the encoder mask now for vblank work */
sde_crtc->cached_encoder_mask = crtc->state->encoder_mask;
/* max possible vsync_cnt(atomic_t) soft counter */
drm_crtc_set_max_vblank_count(crtc, INT_MAX);
drm_crtc_vblank_on(crtc);
/* avoid vblank on/off for virtual display */
intf_mode = sde_crtc_get_intf_mode(crtc, crtc->state);
if ((intf_mode != INTF_MODE_WB_BLOCK) && (intf_mode != INTF_MODE_WB_LINE)) {
/* max possible vsync_cnt(atomic_t) soft counter */
drm_crtc_set_max_vblank_count(crtc, INT_MAX);
drm_crtc_vblank_on(crtc);
}
}
mutex_lock(&sde_crtc->crtc_lock);

8
msm/sde/sde_encoder.c
View File

@@ -3417,13 +3417,9 @@ void sde_encoder_register_vblank_callback(struct drm_encoder *drm_enc,
SDE_ERROR("invalid encoder\n");
return;
}
SDE_DEBUG_ENC(sde_enc, "\n");
SDE_EVT32(DRMID(drm_enc), enable);
if (sde_encoder_in_clone_mode(drm_enc)) {
SDE_EVT32(DRMID(drm_enc), SDE_EVTLOG_ERROR);
return;
}
SDE_DEBUG_ENC(sde_enc, "enable:%d\n", enable);
SDE_EVT32(DRMID(drm_enc), enable);
spin_lock_irqsave(&sde_enc->enc_spinlock, lock_flags);
sde_enc->crtc_vblank_cb = vbl_cb;

1
msm/sde/sde_encoder_phys_wb.c
View File

@@ -2049,7 +2049,6 @@ struct sde_encoder_phys *sde_encoder_phys_wb_init(
phys_enc->intf_mode = INTF_MODE_WB_LINE;
phys_enc->intf_idx = p->intf_idx;
phys_enc->enc_spinlock = p->enc_spinlock;
phys_enc->vblank_ctl_lock = p->vblank_ctl_lock;
atomic_set(&phys_enc->pending_retire_fence_cnt, 0);
init_waitqueue_head(&phys_enc->pending_kickoff_wq);
wb_cfg = wb_enc->hw_wb->caps;