mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-28 11:18:45 +07:00
31d34d9bb3
This fixes potential invalid pointer de-reference, when media_entity_cleanup() is called before video device is unregistered. Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
119 lines
3.5 KiB
C
119 lines
3.5 KiB
C
/*
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* Copyright (C) 2011 - 2012 Samsung Electronics Co., Ltd.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#ifndef FIMC_MDEVICE_H_
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#define FIMC_MDEVICE_H_
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#include <linux/clk.h>
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#include <linux/platform_device.h>
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#include <linux/mutex.h>
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#include <media/media-device.h>
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#include <media/media-entity.h>
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#include <media/v4l2-device.h>
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#include <media/v4l2-subdev.h>
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#include "fimc-core.h"
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#include "fimc-lite.h"
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#include "mipi-csis.h"
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/* Group IDs of sensor, MIPI-CSIS, FIMC-LITE and the writeback subdevs. */
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#define SENSOR_GROUP_ID (1 << 8)
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#define CSIS_GROUP_ID (1 << 9)
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#define WRITEBACK_GROUP_ID (1 << 10)
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#define FIMC_GROUP_ID (1 << 11)
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#define FLITE_GROUP_ID (1 << 12)
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#define FIMC_MAX_SENSORS 8
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#define FIMC_MAX_CAMCLKS 2
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struct fimc_csis_info {
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struct v4l2_subdev *sd;
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int id;
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};
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struct fimc_camclk_info {
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struct clk *clock;
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int use_count;
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unsigned long frequency;
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};
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/**
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* struct fimc_sensor_info - image data source subdev information
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* @pdata: sensor's atrributes passed as media device's platform data
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* @subdev: image sensor v4l2 subdev
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* @host: fimc device the sensor is currently linked to
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*
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* This data structure applies to image sensor and the writeback subdevs.
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*/
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struct fimc_sensor_info {
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struct s5p_fimc_isp_info *pdata;
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struct v4l2_subdev *subdev;
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struct fimc_dev *host;
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};
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/**
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* struct fimc_md - fimc media device information
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* @csis: MIPI CSIS subdevs data
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* @sensor: array of registered sensor subdevs
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* @num_sensors: actual number of registered sensors
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* @camclk: external sensor clock information
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* @fimc: array of registered fimc devices
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* @media_dev: top level media device
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* @v4l2_dev: top level v4l2_device holding up the subdevs
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* @pdev: platform device this media device is hooked up into
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* @user_subdev_api: true if subdevs are not configured by the host driver
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* @slock: spinlock protecting @sensor array
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*/
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struct fimc_md {
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struct fimc_csis_info csis[CSIS_MAX_ENTITIES];
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struct fimc_sensor_info sensor[FIMC_MAX_SENSORS];
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int num_sensors;
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struct fimc_camclk_info camclk[FIMC_MAX_CAMCLKS];
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struct fimc_lite *fimc_lite[FIMC_LITE_MAX_DEVS];
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struct fimc_dev *fimc[FIMC_MAX_DEVS];
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struct media_device media_dev;
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struct v4l2_device v4l2_dev;
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struct platform_device *pdev;
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bool user_subdev_api;
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spinlock_t slock;
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};
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#define is_subdev_pad(pad) (pad == NULL || \
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media_entity_type(pad->entity) == MEDIA_ENT_T_V4L2_SUBDEV)
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#define me_subtype(me) \
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((me->type) & (MEDIA_ENT_TYPE_MASK | MEDIA_ENT_SUBTYPE_MASK))
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#define subdev_has_devnode(__sd) (__sd->flags & V4L2_SUBDEV_FL_HAS_DEVNODE)
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static inline struct fimc_md *entity_to_fimc_mdev(struct media_entity *me)
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{
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return me->parent == NULL ? NULL :
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container_of(me->parent, struct fimc_md, media_dev);
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}
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static inline void fimc_md_graph_lock(struct fimc_dev *fimc)
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{
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mutex_lock(&fimc->vid_cap.vfd.entity.parent->graph_mutex);
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}
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static inline void fimc_md_graph_unlock(struct fimc_dev *fimc)
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{
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mutex_unlock(&fimc->vid_cap.vfd.entity.parent->graph_mutex);
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}
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int fimc_md_set_camclk(struct v4l2_subdev *sd, bool on);
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void fimc_pipeline_prepare(struct fimc_pipeline *p, struct media_entity *me);
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int fimc_pipeline_initialize(struct fimc_pipeline *p, struct media_entity *me,
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bool resume);
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int fimc_pipeline_shutdown(struct fimc_pipeline *p);
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int fimc_pipeline_s_power(struct fimc_pipeline *p, bool state);
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int fimc_pipeline_s_stream(struct fimc_pipeline *p, bool state);
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#endif
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