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disp: msm: sde: add all frame-trigger modes support for writeback

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Currently, writeback frame-triggers are serialized by default. Add
logic to support the different frame-trigger modes which can be set
through the connector property or encoder debugfs node.

- default: waits for frame(N-1) completion (wb-done-irq) before
  configuring current frame(N) and releases the commit-thread on
  frame-start (ctl-start-irq)
- posted-start: no previous frame(N-1) completion wait. Configures
  frame(N) and releases the commit-thread on frame-start (ctl-start-irq)
- serialize: no previous frame(N-1) completion wait. Configures frame(N)
  and releases the commit-thread on frame(N) completion (wb-done-irq)
  (wb-done-irq) before configuring the next frame.

Restrict wb posted-start support only for MDSS 9.x+ targets, with older
targets defaulted to default-mode.

Change-Id: Id441378fd79ecbfcfb820da1ff23b14ccfd8e798
Signed-off-by: Veera Sundaram Sankaran <veeras@codeaurora.org>
This commit is contained in:
Veera Sundaram Sankaran
2021-06-22 14:43:31 -07:00
parent 5a1c44d2e2
commit 0cf7ba9a4a
4 changed files with 178 additions and 130 deletions
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19
msm/sde/sde_encoder.c
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@@ -3603,8 +3603,10 @@ static inline void _sde_encoder_trigger_flush(struct drm_encoder *drm_enc,
/* update pending counts and trigger kickoff ctl flush atomically */
spin_lock_irqsave(&sde_enc->enc_spinlock, lock_flags);
if (phys->ops.is_master && phys->ops.is_master(phys) && config_changed)
if (phys->ops.is_master && phys->ops.is_master(phys) && config_changed) {
atomic_inc(&phys->pending_retire_fence_cnt);
atomic_inc(&phys->pending_ctl_start_cnt);
}
pend_ret_fence_cnt = atomic_read(&phys->pending_retire_fence_cnt);
@@ -4280,7 +4282,7 @@ int sde_encoder_prepare_for_kickoff(struct drm_encoder *drm_enc,
struct sde_encoder_kickoff_params *params)
{
struct sde_encoder_virt *sde_enc;
struct sde_encoder_phys *phys;
struct sde_encoder_phys *phys, *cur_master;
struct sde_kms *sde_kms = NULL;
struct sde_crtc *sde_crtc;
bool needs_hw_reset = false, is_cmd_mode;
@@ -4303,13 +4305,12 @@ int sde_encoder_prepare_for_kickoff(struct drm_encoder *drm_enc,
SDE_DEBUG_ENC(sde_enc, "\n");
SDE_EVT32(DRMID(drm_enc));
is_cmd_mode = sde_encoder_check_curr_mode(drm_enc,
MSM_DISPLAY_CMD_MODE);
if (sde_enc->cur_master && sde_enc->cur_master->connector
&& is_cmd_mode)
sde_enc->frame_trigger_mode = sde_connector_get_property(
sde_enc->cur_master->connector->state,
CONNECTOR_PROP_CMD_FRAME_TRIGGER_MODE);
cur_master = sde_enc->cur_master;
is_cmd_mode = sde_encoder_check_curr_mode(drm_enc, MSM_DISPLAY_CMD_MODE);
if (cur_master && cur_master->connector)
sde_enc->frame_trigger_mode =
sde_connector_get_property(cur_master->connector->state,
CONNECTOR_PROP_CMD_FRAME_TRIGGER_MODE);
_sde_encoder_helper_hdr_plus_mempool_update(sde_enc);