From 9d77db3c730780c8ef5ccd4b66403ff5675cfe4e Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Mon, 13 May 2024 10:30:14 +0000
Subject: [PATCH] modify sin led gpio
---
kernel/drivers/gpu/drm/msm/msm_atomic.c | 292 ++++++++++++++++++++++++++++++++++++++++++++++++----------
1 files changed, 242 insertions(+), 50 deletions(-)
diff --git a/kernel/drivers/gpu/drm/msm/msm_atomic.c b/kernel/drivers/gpu/drm/msm/msm_atomic.c
index 2b7bb6e..561bfa4 100644
--- a/kernel/drivers/gpu/drm/msm/msm_atomic.c
+++ b/kernel/drivers/gpu/drm/msm/msm_atomic.c
@@ -1,65 +1,174 @@
+// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright (C) 2014 Red Hat
* Author: Rob Clark <robdclark@gmail.com>
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License version 2 as published by
- * the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
- * more details.
- *
- * You should have received a copy of the GNU General Public License along with
- * this program. If not, see <http://www.gnu.org/licenses/>.
*/
+#include <drm/drm_atomic_uapi.h>
+#include <drm/drm_gem_framebuffer_helper.h>
+#include <drm/drm_vblank.h>
+
+#include "msm_atomic_trace.h"
#include "msm_drv.h"
#include "msm_gem.h"
#include "msm_kms.h"
-
-static void msm_atomic_wait_for_commit_done(struct drm_device *dev,
- struct drm_atomic_state *old_state)
-{
- struct drm_crtc *crtc;
- struct drm_crtc_state *new_crtc_state;
- struct msm_drm_private *priv = old_state->dev->dev_private;
- struct msm_kms *kms = priv->kms;
- int i;
-
- for_each_new_crtc_in_state(old_state, crtc, new_crtc_state, i) {
- if (!new_crtc_state->active)
- continue;
-
- if (drm_crtc_vblank_get(crtc))
- continue;
-
- kms->funcs->wait_for_crtc_commit_done(kms, crtc);
-
- drm_crtc_vblank_put(crtc);
- }
-}
int msm_atomic_prepare_fb(struct drm_plane *plane,
struct drm_plane_state *new_state)
{
struct msm_drm_private *priv = plane->dev->dev_private;
struct msm_kms *kms = priv->kms;
- struct drm_gem_object *obj;
- struct msm_gem_object *msm_obj;
- struct dma_fence *fence;
if (!new_state->fb)
return 0;
- obj = msm_framebuffer_bo(new_state->fb, 0);
- msm_obj = to_msm_bo(obj);
- fence = reservation_object_get_excl_rcu(msm_obj->resv);
-
- drm_atomic_set_fence_for_plane(new_state, fence);
+ drm_gem_fb_prepare_fb(plane, new_state);
return msm_framebuffer_prepare(new_state->fb, kms->aspace);
+}
+
+/*
+ * Helpers to control vblanks while we flush.. basically just to ensure
+ * that vblank accounting is switched on, so we get valid seqn/timestamp
+ * on pageflip events (if requested)
+ */
+
+static void vblank_get(struct msm_kms *kms, unsigned crtc_mask)
+{
+ struct drm_crtc *crtc;
+
+ for_each_crtc_mask(kms->dev, crtc, crtc_mask) {
+ if (!crtc->state->active)
+ continue;
+ drm_crtc_vblank_get(crtc);
+ }
+}
+
+static void vblank_put(struct msm_kms *kms, unsigned crtc_mask)
+{
+ struct drm_crtc *crtc;
+
+ for_each_crtc_mask(kms->dev, crtc, crtc_mask) {
+ if (!crtc->state->active)
+ continue;
+ drm_crtc_vblank_put(crtc);
+ }
+}
+
+static void msm_atomic_async_commit(struct msm_kms *kms, int crtc_idx)
+{
+ unsigned crtc_mask = BIT(crtc_idx);
+
+ trace_msm_atomic_async_commit_start(crtc_mask);
+
+ mutex_lock(&kms->commit_lock);
+
+ if (!(kms->pending_crtc_mask & crtc_mask)) {
+ mutex_unlock(&kms->commit_lock);
+ goto out;
+ }
+
+ kms->pending_crtc_mask &= ~crtc_mask;
+
+ kms->funcs->enable_commit(kms);
+
+ vblank_get(kms, crtc_mask);
+
+ /*
+ * Flush hardware updates:
+ */
+ trace_msm_atomic_flush_commit(crtc_mask);
+ kms->funcs->flush_commit(kms, crtc_mask);
+ mutex_unlock(&kms->commit_lock);
+
+ /*
+ * Wait for flush to complete:
+ */
+ trace_msm_atomic_wait_flush_start(crtc_mask);
+ kms->funcs->wait_flush(kms, crtc_mask);
+ trace_msm_atomic_wait_flush_finish(crtc_mask);
+
+ vblank_put(kms, crtc_mask);
+
+ mutex_lock(&kms->commit_lock);
+ kms->funcs->complete_commit(kms, crtc_mask);
+ mutex_unlock(&kms->commit_lock);
+ kms->funcs->disable_commit(kms);
+
+out:
+ trace_msm_atomic_async_commit_finish(crtc_mask);
+}
+
+static enum hrtimer_restart msm_atomic_pending_timer(struct hrtimer *t)
+{
+ struct msm_pending_timer *timer = container_of(t,
+ struct msm_pending_timer, timer);
+ struct msm_drm_private *priv = timer->kms->dev->dev_private;
+
+ queue_work(priv->wq, &timer->work);
+
+ return HRTIMER_NORESTART;
+}
+
+static void msm_atomic_pending_work(struct work_struct *work)
+{
+ struct msm_pending_timer *timer = container_of(work,
+ struct msm_pending_timer, work);
+
+ msm_atomic_async_commit(timer->kms, timer->crtc_idx);
+}
+
+void msm_atomic_init_pending_timer(struct msm_pending_timer *timer,
+ struct msm_kms *kms, int crtc_idx)
+{
+ timer->kms = kms;
+ timer->crtc_idx = crtc_idx;
+ hrtimer_init(&timer->timer, CLOCK_MONOTONIC, HRTIMER_MODE_ABS);
+ timer->timer.function = msm_atomic_pending_timer;
+ INIT_WORK(&timer->work, msm_atomic_pending_work);
+}
+
+static bool can_do_async(struct drm_atomic_state *state,
+ struct drm_crtc **async_crtc)
+{
+ struct drm_connector_state *connector_state;
+ struct drm_connector *connector;
+ struct drm_crtc_state *crtc_state;
+ struct drm_crtc *crtc;
+ int i, num_crtcs = 0;
+
+ if (!(state->legacy_cursor_update || state->async_update))
+ return false;
+
+ /* any connector change, means slow path: */
+ for_each_new_connector_in_state(state, connector, connector_state, i)
+ return false;
+
+ for_each_new_crtc_in_state(state, crtc, crtc_state, i) {
+ if (drm_atomic_crtc_needs_modeset(crtc_state))
+ return false;
+ if (++num_crtcs > 1)
+ return false;
+ *async_crtc = crtc;
+ }
+
+ return true;
+}
+
+/* Get bitmask of crtcs that will need to be flushed. The bitmask
+ * can be used with for_each_crtc_mask() iterator, to iterate
+ * effected crtcs without needing to preserve the atomic state.
+ */
+static unsigned get_crtc_mask(struct drm_atomic_state *state)
+{
+ struct drm_crtc_state *crtc_state;
+ struct drm_crtc *crtc;
+ unsigned i, mask = 0;
+
+ for_each_new_crtc_in_state(state, crtc, crtc_state, i)
+ mask |= drm_crtc_mask(crtc);
+
+ return mask;
}
void msm_atomic_commit_tail(struct drm_atomic_state *state)
@@ -67,25 +176,108 @@
struct drm_device *dev = state->dev;
struct msm_drm_private *priv = dev->dev_private;
struct msm_kms *kms = priv->kms;
+ struct drm_crtc *async_crtc = NULL;
+ unsigned crtc_mask = get_crtc_mask(state);
+ bool async = kms->funcs->vsync_time &&
+ can_do_async(state, &async_crtc);
+ trace_msm_atomic_commit_tail_start(async, crtc_mask);
+
+ kms->funcs->enable_commit(kms);
+
+ /*
+ * Ensure any previous (potentially async) commit has
+ * completed:
+ */
+ trace_msm_atomic_wait_flush_start(crtc_mask);
+ kms->funcs->wait_flush(kms, crtc_mask);
+ trace_msm_atomic_wait_flush_finish(crtc_mask);
+
+ mutex_lock(&kms->commit_lock);
+
+ /*
+ * Now that there is no in-progress flush, prepare the
+ * current update:
+ */
kms->funcs->prepare_commit(kms, state);
+ /*
+ * Push atomic updates down to hardware:
+ */
drm_atomic_helper_commit_modeset_disables(dev, state);
-
drm_atomic_helper_commit_planes(dev, state, 0);
-
drm_atomic_helper_commit_modeset_enables(dev, state);
- if (kms->funcs->commit) {
- DRM_DEBUG_ATOMIC("triggering commit\n");
- kms->funcs->commit(kms, state);
+ if (async) {
+ struct msm_pending_timer *timer =
+ &kms->pending_timers[drm_crtc_index(async_crtc)];
+
+ /* async updates are limited to single-crtc updates: */
+ WARN_ON(crtc_mask != drm_crtc_mask(async_crtc));
+
+ /*
+ * Start timer if we don't already have an update pending
+ * on this crtc:
+ */
+ if (!(kms->pending_crtc_mask & crtc_mask)) {
+ ktime_t vsync_time, wakeup_time;
+
+ kms->pending_crtc_mask |= crtc_mask;
+
+ vsync_time = kms->funcs->vsync_time(kms, async_crtc);
+ wakeup_time = ktime_sub(vsync_time, ms_to_ktime(1));
+
+ hrtimer_start(&timer->timer, wakeup_time,
+ HRTIMER_MODE_ABS);
+ }
+
+ kms->funcs->disable_commit(kms);
+ mutex_unlock(&kms->commit_lock);
+
+ /*
+ * At this point, from drm core's perspective, we
+ * are done with the atomic update, so we can just
+ * go ahead and signal that it is done:
+ */
+ drm_atomic_helper_commit_hw_done(state);
+ drm_atomic_helper_cleanup_planes(dev, state);
+
+ trace_msm_atomic_commit_tail_finish(async, crtc_mask);
+
+ return;
}
- msm_atomic_wait_for_commit_done(dev, state);
+ /*
+ * If there is any async flush pending on updated crtcs, fold
+ * them into the current flush.
+ */
+ kms->pending_crtc_mask &= ~crtc_mask;
- kms->funcs->complete_commit(kms, state);
+ vblank_get(kms, crtc_mask);
+
+ /*
+ * Flush hardware updates:
+ */
+ trace_msm_atomic_flush_commit(crtc_mask);
+ kms->funcs->flush_commit(kms, crtc_mask);
+ mutex_unlock(&kms->commit_lock);
+
+ /*
+ * Wait for flush to complete:
+ */
+ trace_msm_atomic_wait_flush_start(crtc_mask);
+ kms->funcs->wait_flush(kms, crtc_mask);
+ trace_msm_atomic_wait_flush_finish(crtc_mask);
+
+ vblank_put(kms, crtc_mask);
+
+ mutex_lock(&kms->commit_lock);
+ kms->funcs->complete_commit(kms, crtc_mask);
+ mutex_unlock(&kms->commit_lock);
+ kms->funcs->disable_commit(kms);
drm_atomic_helper_commit_hw_done(state);
-
drm_atomic_helper_cleanup_planes(dev, state);
+
+ trace_msm_atomic_commit_tail_finish(async, crtc_mask);
}
--
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