sync: new fence api [2/7]

PD#149525: sync: new fence api

Change-Id: I3c957758a67fb6c0a0b3aa5031637b00d3d510e8
Signed-off-by: Jiyu Yang <Jiyu.Yang@amlogic.com>

MAINTAINERS

@@ -14052,6 +14052,10 @@ AMLOGIC multimedia
 M:  Nanxin Qin <nanxin.qin@amlogic.com>
 F: drivers/amlogic/media/common/codec_mm/configs/*
 
+AMLOGIC sync
+M:  Sky Zhou <sky.zhou@amlogic.com>
+F: include/linux/amlogic/aml_sync_api.h
+
 AMLOGIC ADD PARTITION NORMAL & AB DTS
 M: Xindong Xu <xindong.xu@amlogic.com>
 F: arch/arm64/boot/dts/amlogic/partition_mbox_ab.dtsi
@@ -14061,4 +14065,4 @@ AMLOGIC multimedia
 M:  JinTao Xu <jintao.xu@amlogic.com>
 F: drivers/amlogic/media/video_processor/ionvideo/ion_priv.h
 F: drivers/amlogic/media/video_processor/ionvideo/videobuf2-ion.c
-F: drivers/amlogic/media/video_processor/ionvideo/videobuf2-ion.h
+F: drivers/amlogic/media/video_processor/ionvideo/videobuf2-ion.h

arch/arm64/configs/meson64_defconfig

@@ -442,6 +442,8 @@ CONFIG_LEDS_TRIGGER_TIMER=y
 CONFIG_LEDS_TRIGGER_ONESHOT=y
 CONFIG_LEDS_TRIGGER_HEARTBEAT=y
 CONFIG_LEDS_TRIGGER_BACKLIGHT=y
+CONFIG_SYNC_FILE=y
+CONFIG_SW_SYNC=y
 CONFIG_UIO=y
 CONFIG_UIO_PDRV_GENIRQ=y
 CONFIG_VIRTIO_MMIO=y
@@ -449,9 +451,6 @@ CONFIG_STAGING=y
 CONFIG_ASHMEM=y
 CONFIG_ANDROID_LOGGER=y
 CONFIG_ANDROID_LOW_MEMORY_KILLER=y
-CONFIG_SYNC=y
-CONFIG_SW_SYNC=y
-CONFIG_SW_SYNC_USER=y
 CONFIG_PM_DEVFREQ=y
 CONFIG_DEVFREQ_GOV_SIMPLE_ONDEMAND=y
 CONFIG_DEVFREQ_GOV_PERFORMANCE=y

drivers/dma-buf/sw_sync.c

@@ -381,3 +381,82 @@ const struct file_operations sw_sync_debugfs_fops = {
 	.unlocked_ioctl = sw_sync_ioctl,
 	.compat_ioctl	= sw_sync_ioctl,
 };
+
+
+/*api for amlogic use.*/
+void *aml_sync_create_timeline(const char *tname)
+{
+	struct sync_timeline *timeline;
+
+	timeline = sync_timeline_create(tname);
+	return (void *)timeline;
+}
+EXPORT_SYMBOL(aml_sync_create_timeline);
+
+int aml_sync_create_fence(void *timeline, unsigned int value)
+{
+	struct sync_timeline *tl = (struct sync_timeline *)timeline;
+	int fd;
+	int err;
+	struct sync_pt *pt;
+	struct sync_file *sync_file;
+
+	if (tl == NULL)
+		return -EPERM;
+
+	fd =  get_unused_fd_flags(O_CLOEXEC);
+	if (fd < 0)
+		return -EBADF;
+
+	pt = sync_pt_create(tl, sizeof(*pt), value);
+	if (!pt) {
+		err = -ENOMEM;
+		goto err;
+	}
+
+	sync_file = sync_file_create(&pt->base);
+	fence_put(&pt->base);
+	if (!sync_file) {
+		err = -ENOMEM;
+		goto err;
+	}
+
+	fd_install(fd, sync_file->file);
+	return fd;
+
+err:
+	put_unused_fd(fd);
+	return err;
+}
+EXPORT_SYMBOL(aml_sync_create_fence);
+
+void aml_sync_inc_timeline(void *timeline, unsigned int value)
+{
+	struct sync_timeline *tl = (struct sync_timeline *)timeline;
+
+	if (tl == NULL)
+		return;
+	sync_timeline_signal(tl, value);
+}
+EXPORT_SYMBOL(aml_sync_inc_timeline);
+
+struct fence *aml_sync_get_fence(int syncfile_fd)
+{
+	return sync_file_get_fence(syncfile_fd);
+}
+EXPORT_SYMBOL(aml_sync_get_fence);
+
+int aml_sync_wait_fence(struct fence *fence, long timeout)
+{
+	long ret;
+
+	ret = fence_wait_timeout(fence, false, timeout);
+	return ret;
+}
+EXPORT_SYMBOL(aml_sync_wait_fence);
+
+void aml_sync_put_fence(struct fence *fence)
+{
+	fence_put(fence);
+}
+EXPORT_SYMBOL(aml_sync_put_fence);

include/linux/amlogic/aml_sync_api.h

@@ -0,0 +1,26 @@
+/*
+ * include/linux/amlogic/aml_sync_api.h
+ *
+ * Copyright (C) 2017 Amlogic, Inc. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * 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.
+ *
+ */
+
+struct fence;
+
+void *aml_sync_create_timeline(const char *tname);
+int aml_sync_create_fence(void *timeline, unsigned int value);
+int aml_sync_inc_timeline(void *timeline, unsigned int value);
+
+struct fence *aml_sync_get_fence(int syncfile_fd);
+int aml_sync_wait_fence(struct fence *syncfile, long timeout);
+void aml_sync_put_fence(struct fence *syncfile);