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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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62dd4acd0b
Video capture subdevs may be over I2C and may sleep during xfer, so we cannot do IRQ-disabled locking when calling the subdev. The IRQ-disabled locking is meant to protect the DMA queue list throughout the rest of the driver, so update the locking in [start|stop]_streaming to protect just this list, and update the irqlock comment to reflect what it actually protects. Suggested-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Kevin Hilman <khilman@baylibre.com> Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
117 lines
3.3 KiB
C
117 lines
3.3 KiB
C
/*
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* Copyright (C) 2009 Texas Instruments Inc
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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 as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#ifndef VPIF_CAPTURE_H
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#define VPIF_CAPTURE_H
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/* Header files */
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#include <media/videobuf2-dma-contig.h>
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#include <media/v4l2-device.h>
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#include "vpif.h"
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/* Macros */
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#define VPIF_CAPTURE_VERSION "0.0.2"
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#define VPIF_VALID_FIELD(field) (((V4L2_FIELD_ANY == field) || \
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(V4L2_FIELD_NONE == field)) || \
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(((V4L2_FIELD_INTERLACED == field) || \
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(V4L2_FIELD_SEQ_TB == field)) || \
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(V4L2_FIELD_SEQ_BT == field)))
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#define VPIF_CAPTURE_MAX_DEVICES 2
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#define VPIF_VIDEO_INDEX 0
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#define VPIF_NUMBER_OF_OBJECTS 1
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/* Enumerated data type to give id to each device per channel */
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enum vpif_channel_id {
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VPIF_CHANNEL0_VIDEO = 0,
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VPIF_CHANNEL1_VIDEO,
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};
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struct video_obj {
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enum v4l2_field buf_field;
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/* Currently selected or default standard */
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v4l2_std_id stdid;
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struct v4l2_dv_timings dv_timings;
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};
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struct vpif_cap_buffer {
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struct vb2_v4l2_buffer vb;
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struct list_head list;
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};
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struct common_obj {
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/* Pointer pointing to current v4l2_buffer */
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struct vpif_cap_buffer *cur_frm;
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/* Pointer pointing to current v4l2_buffer */
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struct vpif_cap_buffer *next_frm;
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/* Used to store pixel format */
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struct v4l2_format fmt;
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/* Buffer queue used in video-buf */
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struct vb2_queue buffer_queue;
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/* Queue of filled frames */
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struct list_head dma_queue;
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/* Protects the dma_queue field */
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spinlock_t irqlock;
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/* lock used to access this structure */
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struct mutex lock;
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/* Function pointer to set the addresses */
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void (*set_addr) (unsigned long, unsigned long, unsigned long,
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unsigned long);
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/* offset where Y top starts from the starting of the buffer */
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u32 ytop_off;
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/* offset where Y bottom starts from the starting of the buffer */
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u32 ybtm_off;
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/* offset where C top starts from the starting of the buffer */
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u32 ctop_off;
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/* offset where C bottom starts from the starting of the buffer */
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u32 cbtm_off;
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/* Indicates width of the image data */
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u32 width;
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/* Indicates height of the image data */
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u32 height;
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};
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struct channel_obj {
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/* Identifies video device for this channel */
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struct video_device video_dev;
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/* Indicates id of the field which is being displayed */
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u32 field_id;
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/* flag to indicate whether decoder is initialized */
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u8 initialized;
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/* Identifies channel */
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enum vpif_channel_id channel_id;
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/* Current input */
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u32 input_idx;
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/* subdev corresponding to the current input, may be NULL */
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struct v4l2_subdev *sd;
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/* vpif configuration params */
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struct vpif_params vpifparams;
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/* common object array */
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struct common_obj common[VPIF_NUMBER_OF_OBJECTS];
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/* video object */
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struct video_obj video;
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};
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struct vpif_device {
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struct v4l2_device v4l2_dev;
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struct channel_obj *dev[VPIF_CAPTURE_NUM_CHANNELS];
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struct v4l2_subdev **sd;
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struct v4l2_async_notifier notifier;
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struct vpif_capture_config *config;
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};
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#endif /* VPIF_CAPTURE_H */
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