e46899dff3
From https://gitlab.postmarketos.org/soc/qualcomm-sm8250/linux/-/commits/6.17.0?ref_type=HEADS Made some modifications to be compatible with the latest kernel. Signed-off-by: CodeChenL <2540735020@qq.com>
139 lines
4.4 KiB
Diff
139 lines
4.4 KiB
Diff
From 56330cd8650e8b60b836727156a94a67485a3c67 Mon Sep 17 00:00:00 2001
|
|
From: Jianhua Lu <lujianhua000@gmail.com>
|
|
Date: Thu, 4 Aug 2022 13:26:53 +0800
|
|
Subject: [PATCH 01/62] drm: Add drm notifier support
|
|
|
|
Signed-off-by: Jiali Chen <chenjiali@radxa.com>
|
|
---
|
|
drivers/gpu/drm/Makefile | 3 +-
|
|
drivers/gpu/drm/drm_notifier.c | 58 ++++++++++++++++++++++++++++++++++
|
|
include/drm/drm_notifier.h | 37 ++++++++++++++++++++++
|
|
3 files changed, 97 insertions(+), 1 deletion(-)
|
|
create mode 100644 drivers/gpu/drm/drm_notifier.c
|
|
create mode 100644 include/drm/drm_notifier.h
|
|
|
|
diff --git a/drivers/gpu/drm/Makefile b/drivers/gpu/drm/Makefile
|
|
index 4dafbdc8f86a..9b2434daa24f 100644
|
|
--- a/drivers/gpu/drm/Makefile
|
|
+++ b/drivers/gpu/drm/Makefile
|
|
@@ -72,7 +72,8 @@ drm-y := \
|
|
drm_vblank.o \
|
|
drm_vblank_work.o \
|
|
drm_vma_manager.o \
|
|
- drm_writeback.o
|
|
+ drm_writeback.o \
|
|
+ drm_notifier.o
|
|
drm-$(CONFIG_DRM_CLIENT) += \
|
|
drm_client.o \
|
|
drm_client_event.o \
|
|
diff --git a/drivers/gpu/drm/drm_notifier.c b/drivers/gpu/drm/drm_notifier.c
|
|
new file mode 100644
|
|
index 000000000000..0b90d02d8692
|
|
--- /dev/null
|
|
+++ b/drivers/gpu/drm/drm_notifier.c
|
|
@@ -0,0 +1,58 @@
|
|
+/*
|
|
+ * Copyright (c) 2019, The Linux Foundation. All rights reserved.
|
|
+ * Copyright (C) 2021 XiaoMi, Inc.
|
|
+ *
|
|
+ * This program is free software; you can redistribute it and/or modify
|
|
+ * it under the terms of the GNU General Public License version 2 and
|
|
+ * only 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.
|
|
+ *
|
|
+ */
|
|
+
|
|
+#include <linux/notifier.h>
|
|
+#include <drm/drm_notifier.h>
|
|
+
|
|
+static BLOCKING_NOTIFIER_HEAD(mi_drm_notifier_list);
|
|
+
|
|
+/**
|
|
+ * mi_drm_register_client - register a client notifier
|
|
+ * @nb: notifier block to callback on events
|
|
+ *
|
|
+ * This function registers a notifier callback function
|
|
+ * to msm_drm_notifier_list, which would be called when
|
|
+ * received unblank/power down event.
|
|
+ */
|
|
+int mi_drm_register_client(struct notifier_block *nb)
|
|
+{
|
|
+ return blocking_notifier_chain_register(&mi_drm_notifier_list, nb);
|
|
+}
|
|
+EXPORT_SYMBOL(mi_drm_register_client);
|
|
+
|
|
+/**
|
|
+ * mi_drm_unregister_client - unregister a client notifier
|
|
+ * @nb: notifier block to callback on events
|
|
+ *
|
|
+ * This function unregisters the callback function from
|
|
+ * msm_drm_notifier_list.
|
|
+ */
|
|
+int mi_drm_unregister_client(struct notifier_block *nb)
|
|
+{
|
|
+ return blocking_notifier_chain_unregister(&mi_drm_notifier_list, nb);
|
|
+}
|
|
+EXPORT_SYMBOL(mi_drm_unregister_client);
|
|
+
|
|
+/**
|
|
+ * mi_drm_notifier_call_chain - notify clients of drm_events
|
|
+ * @val: event MSM_DRM_EARLY_EVENT_BLANK or MSM_DRM_EVENT_BLANK
|
|
+ * @v: notifier data, inculde display id and display blank
|
|
+ * event(unblank or power down).
|
|
+ */
|
|
+int mi_drm_notifier_call_chain(unsigned long val, void *v)
|
|
+{
|
|
+ return blocking_notifier_call_chain(&mi_drm_notifier_list, val, v);
|
|
+}
|
|
+EXPORT_SYMBOL(mi_drm_notifier_call_chain);
|
|
diff --git a/include/drm/drm_notifier.h b/include/drm/drm_notifier.h
|
|
new file mode 100644
|
|
index 000000000000..fd0e976559b8
|
|
--- /dev/null
|
|
+++ b/include/drm/drm_notifier.h
|
|
@@ -0,0 +1,37 @@
|
|
+/*
|
|
+ * Copyright (c) 2019, The Linux Foundation. All rights reserved.
|
|
+ * Copyright (C) 2021 XiaoMi, Inc.
|
|
+ *
|
|
+ * This program is free software; you can redistribute it and/or modify
|
|
+ * it under the terms of the GNU General Public License version 2 and
|
|
+ * only 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.
|
|
+ *
|
|
+ */
|
|
+
|
|
+#ifndef _DRM_NOTIFIER_H_
|
|
+#define _DRM_NOTIFIER_H_
|
|
+
|
|
+#include <linux/notifier.h>
|
|
+
|
|
+/* A hardware display blank change occurred */
|
|
+#define MI_DRM_EVENT_BLANK 0x01
|
|
+/* A hardware display blank early change occurred */
|
|
+#define MI_DRM_EARLY_EVENT_BLANK 0x02
|
|
+
|
|
+enum drm_notifier_data {
|
|
+ /* panel: power on */
|
|
+ MI_DRM_BLANK_UNBLANK,
|
|
+ /* panel: power down */
|
|
+ MI_DRM_BLANK_POWERDOWN,
|
|
+};
|
|
+
|
|
+int mi_drm_register_client(struct notifier_block *nb);
|
|
+int mi_drm_unregister_client(struct notifier_block *nb);
|
|
+int mi_drm_notifier_call_chain(unsigned long val, void *v);
|
|
+
|
|
+#endif /* _DRM_NOTIFIER_H */
|
|
--
|
|
2.47.3
|
|
|