samsung-sm8650/android_kernel_samsung_sm8650-modules
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

msm: camera: sync: Add support for dma fences

Browse Source 
Add support to create, release, signal and import
a dma fence. When a sync object is imported for a dma fence
signal the dma fence when signaling the sync object with
appropriate status. This is achieved by implementing
generic fence scheme. The change also adds support
for batched fences.

CRs-Fixed: 3207212
Change-Id: I23fbc0992281cfee0303e213a30bce138ae7bdff
Signed-off-by: Karthik Anantha Ram <quic_kartanan@quicinc.com>
This commit is contained in:
Karthik Anantha Ram
2022-02-10 16:49:49 -08:00
committed by Camera Software Integration
parent cf223fa7b3
commit a130199cd3
8 changed files with 1757 additions and 98 deletions
Download Patch File Download Diff File Expand all files Collapse all files

47
drivers/cam_sync/cam_sync_private.h
View File

@@ -1,6 +1,7 @@
/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Copyright (c) 2017-2020, The Linux Foundation. All rights reserved.
* Copyright (c) 2017-2021, The Linux Foundation. All rights reserved.
* Copyright (c) 2022 Qualcomm Innovation Center, Inc. All rights reserved.
*/
#ifndef __CAM_SYNC_PRIVATE_H__
@@ -17,6 +18,7 @@
#include <media/v4l2-event.h>
#include <media/v4l2-ioctl.h>
#include "cam_sync_api.h"
#include "cam_sync_dma_fence.h"
#if IS_REACHABLE(CONFIG_MSM_GLOBAL_SYNX)
#include <synx_api.h>
@@ -30,6 +32,7 @@
#define CAM_SYNC_OBJ_NAME_LEN 64
#define CAM_SYNC_MAX_OBJS 2048
#define CAM_GENERIC_FENCE_BATCH_MAX 10
#define CAM_SYNC_MAX_V4L2_EVENTS 250
#define CAM_SYNC_DEBUG_FILENAME "cam_debug"
#define CAM_SYNC_DEBUG_BASEDIR "cam"
@@ -124,22 +127,38 @@ struct sync_user_payload {
struct list_head list;
};
/**
* struct sync_dma_fence_info - DMA fence info associated with this sync obj
*
* @dma_fence_fd : DMA fence fd
* @dma_fence_row_idx : Index of the row corresponding to this dma fence
* in the dma fence table
* @sync_created_with_dma : If sync obj and dma fence are created together
*/
struct sync_dma_fence_info {
int32_t dma_fence_fd;
int32_t dma_fence_row_idx;
bool sync_created_with_dma;
};
/**
* struct sync_table_row - Single row of information about a sync object, used
* for internal book keeping in the sync driver
*
* @name : Optional string representation of the sync object
* @type : Type of the sync object (individual or group)
* @sync_id : Integer id representing this sync object
* @parents_list : Linked list of parents of this sync object
* @children_list : Linked list of children of this sync object
* @state : State (INVALID, ACTIVE, SIGNALED_SUCCESS or
* SIGNALED_ERROR)
* @remaining : Count of remaining children that not been signaled
* @signaled : Completion variable on which block calls will wait
* @callback_list : Linked list of kernel callbacks registered
* @user_payload_list : LInked list of user space payloads registered
* @ref_cnt : ref count of the number of usage of the fence.
* @name : Optional string representation of the sync object
* @type : Type of the sync object (individual or group)
* @sync_id : Integer id representing this sync object
* @parents_list : Linked list of parents of this sync object
* @children_list : Linked list of children of this sync object
* @state : State (INVALID, ACTIVE, SIGNALED_SUCCESS or
* SIGNALED_ERROR)
* @remaining : Count of remaining children that not been signaled
* @signaled : Completion variable on which block calls will wait
* @callback_list : Linked list of kernel callbacks registered
* @user_payload_list : LInked list of user space payloads registered
* @ref_cnt : ref count of the number of usage of the fence.
* @ext_fence_mask : Mask to indicate associated external fence types
* @dma_fence_info : dma fence info if associated
*/
struct sync_table_row {
char name[CAM_SYNC_OBJ_NAME_LEN];
@@ -155,6 +174,8 @@ struct sync_table_row {
struct list_head callback_list;
struct list_head user_payload_list;
atomic_t ref_cnt;
unsigned long ext_fence_mask;
struct sync_dma_fence_info dma_fence_info;
};
/**