From f70575805708cabdedea7498aaa3f710fde4d920 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Wed, 31 Jan 2024 03:29:01 +0000
Subject: [PATCH] add lvds1024*800
---
kernel/drivers/gpu/drm/msm/msm_kms.h | 124 ++++++++++++++++++++++++++++++++++-------
1 files changed, 103 insertions(+), 21 deletions(-)
diff --git a/kernel/drivers/gpu/drm/msm/msm_kms.h b/kernel/drivers/gpu/drm/msm/msm_kms.h
index fd88ceb..1cbef6b 100644
--- a/kernel/drivers/gpu/drm/msm/msm_kms.h
+++ b/kernel/drivers/gpu/drm/msm/msm_kms.h
@@ -1,19 +1,8 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Copyright (c) 2016-2018, The Linux Foundation. All rights reserved.
* Copyright (C) 2013 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/>.
*/
#ifndef __MSM_KMS_H__
@@ -41,13 +30,76 @@
irqreturn_t (*irq)(struct msm_kms *kms);
int (*enable_vblank)(struct msm_kms *kms, struct drm_crtc *crtc);
void (*disable_vblank)(struct msm_kms *kms, struct drm_crtc *crtc);
- /* modeset, bracketing atomic_commit(): */
+
+ /*
+ * Atomic commit handling:
+ *
+ * Note that in the case of async commits, the funcs which take
+ * a crtc_mask (ie. ->flush_commit(), and ->complete_commit())
+ * might not be evenly balanced with ->prepare_commit(), however
+ * each crtc that effected by a ->prepare_commit() (potentially
+ * multiple times) will eventually (at end of vsync period) be
+ * flushed and completed.
+ *
+ * This has some implications about tracking of cleanup state,
+ * for example SMP blocks to release after commit completes. Ie.
+ * cleanup state should be also duplicated in the various
+ * duplicate_state() methods, as the current cleanup state at
+ * ->complete_commit() time may have accumulated cleanup work
+ * from multiple commits.
+ */
+
+ /**
+ * Enable/disable power/clks needed for hw access done in other
+ * commit related methods.
+ *
+ * If mdp4 is migrated to runpm, we could probably drop these
+ * and use runpm directly.
+ */
+ void (*enable_commit)(struct msm_kms *kms);
+ void (*disable_commit)(struct msm_kms *kms);
+
+ /**
+ * If the kms backend supports async commit, it should implement
+ * this method to return the time of the next vsync. This is
+ * used to determine a time slightly before vsync, for the async
+ * commit timer to run and complete an async commit.
+ */
+ ktime_t (*vsync_time)(struct msm_kms *kms, struct drm_crtc *crtc);
+
+ /**
+ * Prepare for atomic commit. This is called after any previous
+ * (async or otherwise) commit has completed.
+ */
void (*prepare_commit)(struct msm_kms *kms, struct drm_atomic_state *state);
- void (*commit)(struct msm_kms *kms, struct drm_atomic_state *state);
- void (*complete_commit)(struct msm_kms *kms, struct drm_atomic_state *state);
- /* functions to wait for atomic commit completed on each CRTC */
- void (*wait_for_crtc_commit_done)(struct msm_kms *kms,
- struct drm_crtc *crtc);
+
+ /**
+ * Flush an atomic commit. This is called after the hardware
+ * updates have already been pushed down to effected planes/
+ * crtcs/encoders/connectors.
+ */
+ void (*flush_commit)(struct msm_kms *kms, unsigned crtc_mask);
+
+ /**
+ * Wait for any in-progress flush to complete on the specified
+ * crtcs. This should not block if there is no in-progress
+ * commit (ie. don't just wait for a vblank), as it will also
+ * be called before ->prepare_commit() to ensure any potential
+ * "async" commit has completed.
+ */
+ void (*wait_flush)(struct msm_kms *kms, unsigned crtc_mask);
+
+ /**
+ * Clean up after commit is completed. This is called after
+ * ->wait_flush(), to give the backend a chance to do any
+ * post-commit cleanup.
+ */
+ void (*complete_commit)(struct msm_kms *kms, unsigned crtc_mask);
+
+ /*
+ * Format handling:
+ */
+
/* get msm_format w/ optional format modifiers from drm_mode_fb_cmd2 */
const struct msm_format *(*get_format)(struct msm_kms *kms,
const uint32_t format,
@@ -57,6 +109,7 @@
const struct msm_format *msm_fmt,
const struct drm_mode_fb_cmd2 *cmd,
struct drm_gem_object **bos);
+
/* misc: */
long (*round_pixclk)(struct msm_kms *kms, unsigned long rate,
struct drm_encoder *encoder);
@@ -67,9 +120,6 @@
void (*set_encoder_mode)(struct msm_kms *kms,
struct drm_encoder *encoder,
bool cmd_mode);
- /* pm suspend/resume hooks */
- int (*pm_suspend)(struct device *dev);
- int (*pm_resume)(struct device *dev);
/* cleanup: */
void (*destroy)(struct msm_kms *kms);
#ifdef CONFIG_DEBUG_FS
@@ -78,20 +128,48 @@
#endif
};
+struct msm_kms;
+
+/*
+ * A per-crtc timer for pending async atomic flushes. Scheduled to expire
+ * shortly before vblank to flush pending async updates.
+ */
+struct msm_pending_timer {
+ struct hrtimer timer;
+ struct work_struct work;
+ struct msm_kms *kms;
+ unsigned crtc_idx;
+};
+
struct msm_kms {
const struct msm_kms_funcs *funcs;
+ struct drm_device *dev;
/* irq number to be passed on to drm_irq_install */
int irq;
/* mapper-id used to request GEM buffer mapped for scanout: */
struct msm_gem_address_space *aspace;
+
+ /*
+ * For async commit, where ->flush_commit() and later happens
+ * from the crtc's pending_timer close to end of the frame:
+ */
+ struct mutex commit_lock;
+ unsigned pending_crtc_mask;
+ struct msm_pending_timer pending_timers[MAX_CRTCS];
};
static inline void msm_kms_init(struct msm_kms *kms,
const struct msm_kms_funcs *funcs)
{
+ unsigned i;
+
+ mutex_init(&kms->commit_lock);
kms->funcs = funcs;
+
+ for (i = 0; i < ARRAY_SIZE(kms->pending_timers); i++)
+ msm_atomic_init_pending_timer(&kms->pending_timers[i], kms, i);
}
struct msm_kms *mdp4_kms_init(struct drm_device *dev);
@@ -112,4 +190,8 @@
int mdp5_mdss_init(struct drm_device *dev);
int dpu_mdss_init(struct drm_device *dev);
+#define for_each_crtc_mask(dev, crtc, crtc_mask) \
+ drm_for_each_crtc(crtc, dev) \
+ for_each_if (drm_crtc_mask(crtc) & (crtc_mask))
+
#endif /* __MSM_KMS_H__ */
--
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