[Freedreno] [DPU PATCH 02/11] drm/msm: Don't duplicate modeset_enables atomic helper
Sean Paul
seanpaul at chromium.org
Wed Feb 28 19:18:57 UTC 2018
Instead, shuffle things around so we kickoff crtc after enabling encoder
during modesets. Also moves the vblank wait to after the frame.
Change-Id: I16c7b7f9390d04f6050aa20e17a5335fbf49eba3
Signed-off-by: Sean Paul <seanpaul at chromium.org>
---
drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c | 9 ++
drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c | 5 +-
drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c | 31 ++++-
drivers/gpu/drm/msm/disp/dpu1/dpu_kms.h | 2 +
drivers/gpu/drm/msm/msm_atomic.c | 132 +-------------------
5 files changed, 48 insertions(+), 131 deletions(-)
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c
index a3ab6ed2bf1d..94fab2dcca5b 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c
@@ -3525,6 +3525,12 @@ static void dpu_crtc_enable(struct drm_crtc *crtc,
DPU_EVT32_VERBOSE(DRMID(crtc));
dpu_crtc = to_dpu_crtc(crtc);
+ if (msm_is_mode_seamless(&crtc->state->adjusted_mode) ||
+ msm_is_mode_seamless_vrr(&crtc->state->adjusted_mode)) {
+ DPU_DEBUG("Skipping crtc enable, seamless mode\n");
+ return;
+ }
+
pm_runtime_get_sync(crtc->dev->dev);
drm_for_each_encoder(encoder, crtc->dev) {
@@ -3572,6 +3578,9 @@ static void dpu_crtc_enable(struct drm_crtc *crtc,
DPU_POWER_EVENT_POST_ENABLE | DPU_POWER_EVENT_POST_DISABLE |
DPU_POWER_EVENT_PRE_DISABLE,
dpu_crtc_handle_power_event, crtc, dpu_crtc->name);
+
+ if (msm_needs_vblank_pre_modeset(&crtc->state->adjusted_mode))
+ drm_crtc_wait_one_vblank(crtc);
}
struct plane_state {
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c
index 28ceb589ee40..4d1e3652dbf4 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c
@@ -3693,8 +3693,11 @@ static void dpu_encoder_frame_done_timeout(struct timer_list *t)
static const struct drm_encoder_helper_funcs dpu_encoder_helper_funcs = {
.mode_set = dpu_encoder_virt_mode_set,
.disable = dpu_encoder_virt_disable,
- .enable = dpu_encoder_virt_enable,
+ .enable = dpu_kms_encoder_enable,
.atomic_check = dpu_encoder_virt_atomic_check,
+
+ /* This is called by dpu_kms_encoder_enable */
+ .commit = dpu_encoder_virt_enable,
};
static const struct drm_encoder_funcs dpu_encoder_funcs = {
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
index 81fd3a429e9f..3d83037e8305 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
@@ -425,14 +425,37 @@ static void dpu_kms_prepare_commit(struct msm_kms *kms,
dpu_encoder_prepare_commit(encoder);
}
-static void dpu_kms_commit(struct msm_kms *kms,
- struct drm_atomic_state *old_state)
+/*
+ * Override the encoder enable since we need to setup the inline rotator and do
+ * some crtc magic before enabling any bridge that might be present.
+ */
+void dpu_kms_encoder_enable(struct drm_encoder *encoder)
+{
+ const struct drm_encoder_helper_funcs *funcs = encoder->helper_private;
+ struct drm_crtc *crtc = encoder->crtc;
+
+ /* Forward this enable call to the commit hook */
+ if (funcs && funcs->commit)
+ funcs->commit(encoder);
+
+ if (crtc && crtc->state->active) {
+ DPU_EVT32(DRMID(crtc));
+ dpu_crtc_commit_kickoff(crtc);
+ }
+}
+
+static void dpu_kms_commit(struct msm_kms *kms, struct drm_atomic_state *state)
{
struct drm_crtc *crtc;
- struct drm_crtc_state *old_crtc_state;
+ struct drm_crtc_state *crtc_state;
+ struct dpu_crtc_state *cstate;
int i;
- for_each_old_crtc_in_state(old_state, crtc, old_crtc_state, i) {
+ for_each_new_crtc_in_state(state, crtc, crtc_state, i) {
+ /* If modeset is required, kickoff is run in encoder_enable */
+ if (drm_atomic_crtc_needs_modeset(crtc_state))
+ continue;
+
if (crtc->state->active) {
DPU_EVT32(DRMID(crtc));
dpu_crtc_commit_kickoff(crtc);
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.h b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.h
index 8cadd29a48b1..42c809ed9467 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.h
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.h
@@ -529,4 +529,6 @@ int dpu_kms_fbo_reference(struct dpu_kms_fbo *fbo);
*/
void dpu_kms_fbo_unreference(struct dpu_kms_fbo *fbo);
+void dpu_kms_encoder_enable(struct drm_encoder *encoder);
+
#endif /* __dpu_kms_H__ */
diff --git a/drivers/gpu/drm/msm/msm_atomic.c b/drivers/gpu/drm/msm/msm_atomic.c
index 5cfb80345052..f5794dce25dd 100644
--- a/drivers/gpu/drm/msm/msm_atomic.c
+++ b/drivers/gpu/drm/msm/msm_atomic.c
@@ -84,131 +84,6 @@ static void msm_atomic_wait_for_commit_done(
}
}
-/**
- * msm_atomic_helper_commit_modeset_enables - modeset commit to enable outputs
- * @dev: DRM device
- * @old_state: atomic state object with old state structures
- *
- * This function enables all the outputs with the new configuration which had to
- * be turned off for the update.
- *
- * For compatibility with legacy crtc helpers this should be called after
- * drm_atomic_helper_commit_planes(), which is what the default commit function
- * does. But drivers with different needs can group the modeset commits together
- * and do the plane commits at the end. This is useful for drivers doing runtime
- * PM since planes updates then only happen when the CRTC is actually enabled.
- */
-static void msm_atomic_helper_commit_modeset_enables(struct drm_device *dev,
- struct drm_atomic_state *old_state)
-{
- struct drm_crtc *crtc;
- struct drm_crtc_state *old_crtc_state;
- struct drm_crtc_state *new_crtc_state;
- struct drm_connector *connector;
- struct drm_connector_state *new_conn_state;
- struct msm_drm_private *priv = dev->dev_private;
- struct msm_kms *kms = priv->kms;
- int bridge_enable_count = 0;
- int i;
-
- for_each_oldnew_crtc_in_state(old_state, crtc, old_crtc_state,
- new_crtc_state, i) {
- const struct drm_crtc_helper_funcs *funcs;
-
- /* Need to filter out CRTCs where only planes change. */
- if (!drm_atomic_crtc_needs_modeset(new_crtc_state))
- continue;
-
- if (!new_crtc_state->active)
- continue;
-
- if (msm_is_mode_seamless(&new_crtc_state->mode) ||
- msm_is_mode_seamless_vrr(
- &new_crtc_state->adjusted_mode))
- continue;
-
- funcs = crtc->helper_private;
-
- if (crtc->state->enable) {
- DRM_DEBUG_ATOMIC("enabling [CRTC:%d]\n",
- crtc->base.id);
-
- if (funcs->atomic_enable)
- funcs->atomic_enable(crtc, old_crtc_state);
- else
- funcs->commit(crtc);
- }
-
- if (msm_needs_vblank_pre_modeset(
- &new_crtc_state->adjusted_mode))
- drm_crtc_wait_one_vblank(crtc);
- }
-
- /* ensure bridge/encoder updates happen on same vblank */
- msm_atomic_wait_for_commit_done(dev, old_state);
-
- for_each_new_connector_in_state(old_state, connector,
- new_conn_state, i) {
- const struct drm_encoder_helper_funcs *funcs;
- struct drm_encoder *encoder;
-
- if (!new_conn_state->best_encoder)
- continue;
-
- if (!new_conn_state->crtc->state->active ||
- !drm_atomic_crtc_needs_modeset(
- new_conn_state->crtc->state))
- continue;
-
- encoder = new_conn_state->best_encoder;
- funcs = encoder->helper_private;
-
- DRM_DEBUG_ATOMIC("enabling [ENCODER:%d:%s]\n",
- encoder->base.id, encoder->name);
-
- /*
- * Each encoder has at most one connector (since we always steal
- * it away), so we won't call enable hooks twice.
- */
- drm_bridge_pre_enable(encoder->bridge);
- ++bridge_enable_count;
-
- if (funcs->enable)
- funcs->enable(encoder);
- else
- funcs->commit(encoder);
- }
-
- if (kms->funcs->commit) {
- DRM_DEBUG_ATOMIC("triggering commit\n");
- kms->funcs->commit(kms, old_state);
- }
-
- /* If no bridges were pre_enabled, skip iterating over them again */
- if (bridge_enable_count == 0)
- return;
-
- for_each_new_connector_in_state(old_state, connector,
- new_conn_state, i) {
- struct drm_encoder *encoder;
-
- if (!new_conn_state->best_encoder)
- continue;
-
- if (!new_conn_state->crtc->state->active ||
- !drm_atomic_crtc_needs_modeset(
- new_conn_state->crtc->state))
- continue;
-
- encoder = new_conn_state->best_encoder;
-
- DRM_DEBUG_ATOMIC("bridge enable enabling [ENCODER:%d:%s]\n",
- encoder->base.id, encoder->name);
-
- drm_bridge_enable(encoder->bridge);
- }
-}
-
/* The (potentially) asynchronous part of the commit. At this point
* nothing can fail short of armageddon.
*/
@@ -227,7 +102,12 @@ static void complete_commit(struct msm_commit *c)
drm_atomic_helper_commit_planes(dev, state, 0);
- msm_atomic_helper_commit_modeset_enables(dev, state);
+ drm_atomic_helper_commit_modeset_enables(dev, state);
+
+ if (kms->funcs->commit) {
+ DRM_DEBUG_ATOMIC("triggering commit\n");
+ kms->funcs->commit(kms, state);
+ }
/* NOTE: _wait_for_vblanks() only waits for vblank on
* enabled CRTCs. So we end up faulting when disabling
--
Sean Paul, Software Engineer, Google / Chromium OS
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