// SPDX-License-Identifier: GPL-2.0-only
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/*
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* ispvideo.c
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*
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* TI OMAP3 ISP - Generic video node
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*
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* Copyright (C) 2009-2010 Nokia Corporation
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*
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* Contacts: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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* Sakari Ailus <sakari.ailus@iki.fi>
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*/
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#include <linux/clk.h>
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#include <linux/mm.h>
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#include <linux/module.h>
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#include <linux/pagemap.h>
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#include <linux/scatterlist.h>
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#include <linux/sched.h>
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#include <linux/slab.h>
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#include <linux/vmalloc.h>
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#include <media/v4l2-dev.h>
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#include <media/v4l2-ioctl.h>
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#include <media/v4l2-mc.h>
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#include <media/videobuf2-dma-contig.h>
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#include "ispvideo.h"
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#include "isp.h"
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/* -----------------------------------------------------------------------------
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* Helper functions
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*/
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/*
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* NOTE: When adding new media bus codes, always remember to add
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* corresponding in-memory formats to the table below!!!
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*/
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static struct isp_format_info formats[] = {
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{ MEDIA_BUS_FMT_Y8_1X8, MEDIA_BUS_FMT_Y8_1X8,
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MEDIA_BUS_FMT_Y8_1X8, MEDIA_BUS_FMT_Y8_1X8,
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V4L2_PIX_FMT_GREY, 8, 1, },
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{ MEDIA_BUS_FMT_Y10_1X10, MEDIA_BUS_FMT_Y10_1X10,
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MEDIA_BUS_FMT_Y10_1X10, MEDIA_BUS_FMT_Y8_1X8,
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V4L2_PIX_FMT_Y10, 10, 2, },
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{ MEDIA_BUS_FMT_Y12_1X12, MEDIA_BUS_FMT_Y10_1X10,
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MEDIA_BUS_FMT_Y12_1X12, MEDIA_BUS_FMT_Y8_1X8,
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V4L2_PIX_FMT_Y12, 12, 2, },
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{ MEDIA_BUS_FMT_SBGGR8_1X8, MEDIA_BUS_FMT_SBGGR8_1X8,
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MEDIA_BUS_FMT_SBGGR8_1X8, MEDIA_BUS_FMT_SBGGR8_1X8,
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V4L2_PIX_FMT_SBGGR8, 8, 1, },
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{ MEDIA_BUS_FMT_SGBRG8_1X8, MEDIA_BUS_FMT_SGBRG8_1X8,
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MEDIA_BUS_FMT_SGBRG8_1X8, MEDIA_BUS_FMT_SGBRG8_1X8,
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V4L2_PIX_FMT_SGBRG8, 8, 1, },
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{ MEDIA_BUS_FMT_SGRBG8_1X8, MEDIA_BUS_FMT_SGRBG8_1X8,
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MEDIA_BUS_FMT_SGRBG8_1X8, MEDIA_BUS_FMT_SGRBG8_1X8,
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V4L2_PIX_FMT_SGRBG8, 8, 1, },
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{ MEDIA_BUS_FMT_SRGGB8_1X8, MEDIA_BUS_FMT_SRGGB8_1X8,
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MEDIA_BUS_FMT_SRGGB8_1X8, MEDIA_BUS_FMT_SRGGB8_1X8,
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V4L2_PIX_FMT_SRGGB8, 8, 1, },
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{ MEDIA_BUS_FMT_SBGGR10_DPCM8_1X8, MEDIA_BUS_FMT_SBGGR10_DPCM8_1X8,
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MEDIA_BUS_FMT_SBGGR10_1X10, 0,
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V4L2_PIX_FMT_SBGGR10DPCM8, 8, 1, },
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{ MEDIA_BUS_FMT_SGBRG10_DPCM8_1X8, MEDIA_BUS_FMT_SGBRG10_DPCM8_1X8,
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MEDIA_BUS_FMT_SGBRG10_1X10, 0,
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V4L2_PIX_FMT_SGBRG10DPCM8, 8, 1, },
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{ MEDIA_BUS_FMT_SGRBG10_DPCM8_1X8, MEDIA_BUS_FMT_SGRBG10_DPCM8_1X8,
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MEDIA_BUS_FMT_SGRBG10_1X10, 0,
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V4L2_PIX_FMT_SGRBG10DPCM8, 8, 1, },
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{ MEDIA_BUS_FMT_SRGGB10_DPCM8_1X8, MEDIA_BUS_FMT_SRGGB10_DPCM8_1X8,
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MEDIA_BUS_FMT_SRGGB10_1X10, 0,
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V4L2_PIX_FMT_SRGGB10DPCM8, 8, 1, },
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{ MEDIA_BUS_FMT_SBGGR10_1X10, MEDIA_BUS_FMT_SBGGR10_1X10,
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MEDIA_BUS_FMT_SBGGR10_1X10, MEDIA_BUS_FMT_SBGGR8_1X8,
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V4L2_PIX_FMT_SBGGR10, 10, 2, },
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{ MEDIA_BUS_FMT_SGBRG10_1X10, MEDIA_BUS_FMT_SGBRG10_1X10,
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MEDIA_BUS_FMT_SGBRG10_1X10, MEDIA_BUS_FMT_SGBRG8_1X8,
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V4L2_PIX_FMT_SGBRG10, 10, 2, },
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{ MEDIA_BUS_FMT_SGRBG10_1X10, MEDIA_BUS_FMT_SGRBG10_1X10,
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MEDIA_BUS_FMT_SGRBG10_1X10, MEDIA_BUS_FMT_SGRBG8_1X8,
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V4L2_PIX_FMT_SGRBG10, 10, 2, },
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{ MEDIA_BUS_FMT_SRGGB10_1X10, MEDIA_BUS_FMT_SRGGB10_1X10,
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MEDIA_BUS_FMT_SRGGB10_1X10, MEDIA_BUS_FMT_SRGGB8_1X8,
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V4L2_PIX_FMT_SRGGB10, 10, 2, },
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{ MEDIA_BUS_FMT_SBGGR12_1X12, MEDIA_BUS_FMT_SBGGR10_1X10,
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MEDIA_BUS_FMT_SBGGR12_1X12, MEDIA_BUS_FMT_SBGGR8_1X8,
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V4L2_PIX_FMT_SBGGR12, 12, 2, },
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{ MEDIA_BUS_FMT_SGBRG12_1X12, MEDIA_BUS_FMT_SGBRG10_1X10,
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MEDIA_BUS_FMT_SGBRG12_1X12, MEDIA_BUS_FMT_SGBRG8_1X8,
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V4L2_PIX_FMT_SGBRG12, 12, 2, },
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{ MEDIA_BUS_FMT_SGRBG12_1X12, MEDIA_BUS_FMT_SGRBG10_1X10,
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MEDIA_BUS_FMT_SGRBG12_1X12, MEDIA_BUS_FMT_SGRBG8_1X8,
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V4L2_PIX_FMT_SGRBG12, 12, 2, },
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{ MEDIA_BUS_FMT_SRGGB12_1X12, MEDIA_BUS_FMT_SRGGB10_1X10,
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MEDIA_BUS_FMT_SRGGB12_1X12, MEDIA_BUS_FMT_SRGGB8_1X8,
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V4L2_PIX_FMT_SRGGB12, 12, 2, },
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{ MEDIA_BUS_FMT_UYVY8_1X16, MEDIA_BUS_FMT_UYVY8_1X16,
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MEDIA_BUS_FMT_UYVY8_1X16, 0,
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V4L2_PIX_FMT_UYVY, 16, 2, },
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{ MEDIA_BUS_FMT_YUYV8_1X16, MEDIA_BUS_FMT_YUYV8_1X16,
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MEDIA_BUS_FMT_YUYV8_1X16, 0,
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V4L2_PIX_FMT_YUYV, 16, 2, },
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{ MEDIA_BUS_FMT_UYVY8_2X8, MEDIA_BUS_FMT_UYVY8_2X8,
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MEDIA_BUS_FMT_UYVY8_2X8, 0,
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V4L2_PIX_FMT_UYVY, 8, 2, },
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{ MEDIA_BUS_FMT_YUYV8_2X8, MEDIA_BUS_FMT_YUYV8_2X8,
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MEDIA_BUS_FMT_YUYV8_2X8, 0,
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V4L2_PIX_FMT_YUYV, 8, 2, },
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/* Empty entry to catch the unsupported pixel code (0) used by the CCDC
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* module and avoid NULL pointer dereferences.
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*/
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{ 0, }
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};
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const struct isp_format_info *omap3isp_video_format_info(u32 code)
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{
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unsigned int i;
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for (i = 0; i < ARRAY_SIZE(formats); ++i) {
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if (formats[i].code == code)
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return &formats[i];
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}
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return NULL;
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}
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/*
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* isp_video_mbus_to_pix - Convert v4l2_mbus_framefmt to v4l2_pix_format
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* @video: ISP video instance
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* @mbus: v4l2_mbus_framefmt format (input)
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* @pix: v4l2_pix_format format (output)
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*
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* Fill the output pix structure with information from the input mbus format.
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* The bytesperline and sizeimage fields are computed from the requested bytes
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* per line value in the pix format and information from the video instance.
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*
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* Return the number of padding bytes at end of line.
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*/
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static unsigned int isp_video_mbus_to_pix(const struct isp_video *video,
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const struct v4l2_mbus_framefmt *mbus,
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struct v4l2_pix_format *pix)
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{
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unsigned int bpl = pix->bytesperline;
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unsigned int min_bpl;
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unsigned int i;
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memset(pix, 0, sizeof(*pix));
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pix->width = mbus->width;
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pix->height = mbus->height;
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for (i = 0; i < ARRAY_SIZE(formats); ++i) {
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if (formats[i].code == mbus->code)
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break;
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}
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if (WARN_ON(i == ARRAY_SIZE(formats)))
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return 0;
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min_bpl = pix->width * formats[i].bpp;
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/* Clamp the requested bytes per line value. If the maximum bytes per
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* line value is zero, the module doesn't support user configurable line
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* sizes. Override the requested value with the minimum in that case.
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*/
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if (video->bpl_max)
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bpl = clamp(bpl, min_bpl, video->bpl_max);
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else
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bpl = min_bpl;
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if (!video->bpl_zero_padding || bpl != min_bpl)
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bpl = ALIGN(bpl, video->bpl_alignment);
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pix->pixelformat = formats[i].pixelformat;
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pix->bytesperline = bpl;
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pix->sizeimage = pix->bytesperline * pix->height;
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pix->colorspace = mbus->colorspace;
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pix->field = mbus->field;
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return bpl - min_bpl;
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}
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static void isp_video_pix_to_mbus(const struct v4l2_pix_format *pix,
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struct v4l2_mbus_framefmt *mbus)
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{
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unsigned int i;
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memset(mbus, 0, sizeof(*mbus));
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mbus->width = pix->width;
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mbus->height = pix->height;
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/* Skip the last format in the loop so that it will be selected if no
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* match is found.
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*/
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for (i = 0; i < ARRAY_SIZE(formats) - 1; ++i) {
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if (formats[i].pixelformat == pix->pixelformat)
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break;
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}
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mbus->code = formats[i].code;
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mbus->colorspace = pix->colorspace;
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mbus->field = pix->field;
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}
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static struct v4l2_subdev *
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isp_video_remote_subdev(struct isp_video *video, u32 *pad)
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{
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struct media_pad *remote;
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remote = media_entity_remote_pad(&video->pad);
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if (!remote || !is_media_entity_v4l2_subdev(remote->entity))
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return NULL;
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if (pad)
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*pad = remote->index;
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return media_entity_to_v4l2_subdev(remote->entity);
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}
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/* Return a pointer to the ISP video instance at the far end of the pipeline. */
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static int isp_video_get_graph_data(struct isp_video *video,
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struct isp_pipeline *pipe)
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{
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struct media_graph graph;
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struct media_entity *entity = &video->video.entity;
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struct media_device *mdev = entity->graph_obj.mdev;
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struct isp_video *far_end = NULL;
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int ret;
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mutex_lock(&mdev->graph_mutex);
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ret = media_graph_walk_init(&graph, mdev);
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if (ret) {
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mutex_unlock(&mdev->graph_mutex);
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return ret;
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}
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media_graph_walk_start(&graph, entity);
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while ((entity = media_graph_walk_next(&graph))) {
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struct isp_video *__video;
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media_entity_enum_set(&pipe->ent_enum, entity);
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if (far_end != NULL)
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continue;
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if (entity == &video->video.entity)
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continue;
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if (!is_media_entity_v4l2_video_device(entity))
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continue;
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__video = to_isp_video(media_entity_to_video_device(entity));
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if (__video->type != video->type)
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far_end = __video;
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}
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mutex_unlock(&mdev->graph_mutex);
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media_graph_walk_cleanup(&graph);
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if (video->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
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pipe->input = far_end;
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pipe->output = video;
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} else {
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if (far_end == NULL)
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return -EPIPE;
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pipe->input = video;
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pipe->output = far_end;
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}
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return 0;
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}
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static int
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__isp_video_get_format(struct isp_video *video, struct v4l2_format *format)
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{
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struct v4l2_subdev_format fmt;
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struct v4l2_subdev *subdev;
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u32 pad;
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int ret;
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subdev = isp_video_remote_subdev(video, &pad);
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if (subdev == NULL)
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return -EINVAL;
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fmt.pad = pad;
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fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE;
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mutex_lock(&video->mutex);
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ret = v4l2_subdev_call(subdev, pad, get_fmt, NULL, &fmt);
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mutex_unlock(&video->mutex);
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if (ret)
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return ret;
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format->type = video->type;
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return isp_video_mbus_to_pix(video, &fmt.format, &format->fmt.pix);
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}
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static int
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isp_video_check_format(struct isp_video *video, struct isp_video_fh *vfh)
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{
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struct v4l2_format format;
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int ret;
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memcpy(&format, &vfh->format, sizeof(format));
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ret = __isp_video_get_format(video, &format);
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if (ret < 0)
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return ret;
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if (vfh->format.fmt.pix.pixelformat != format.fmt.pix.pixelformat ||
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vfh->format.fmt.pix.height != format.fmt.pix.height ||
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vfh->format.fmt.pix.width != format.fmt.pix.width ||
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vfh->format.fmt.pix.bytesperline != format.fmt.pix.bytesperline ||
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vfh->format.fmt.pix.sizeimage != format.fmt.pix.sizeimage ||
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vfh->format.fmt.pix.field != format.fmt.pix.field)
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return -EINVAL;
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return 0;
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}
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/* -----------------------------------------------------------------------------
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* Video queue operations
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*/
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static int isp_video_queue_setup(struct vb2_queue *queue,
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unsigned int *count, unsigned int *num_planes,
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unsigned int sizes[], struct device *alloc_devs[])
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{
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struct isp_video_fh *vfh = vb2_get_drv_priv(queue);
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struct isp_video *video = vfh->video;
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*num_planes = 1;
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sizes[0] = vfh->format.fmt.pix.sizeimage;
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if (sizes[0] == 0)
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return -EINVAL;
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*count = min(*count, video->capture_mem / PAGE_ALIGN(sizes[0]));
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return 0;
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}
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static int isp_video_buffer_prepare(struct vb2_buffer *buf)
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{
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struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(buf);
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struct isp_video_fh *vfh = vb2_get_drv_priv(buf->vb2_queue);
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struct isp_buffer *buffer = to_isp_buffer(vbuf);
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struct isp_video *video = vfh->video;
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dma_addr_t addr;
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/* Refuse to prepare the buffer is the video node has registered an
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* error. We don't need to take any lock here as the operation is
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* inherently racy. The authoritative check will be performed in the
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* queue handler, which can't return an error, this check is just a best
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* effort to notify userspace as early as possible.
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*/
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if (unlikely(video->error))
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return -EIO;
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addr = vb2_dma_contig_plane_dma_addr(buf, 0);
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if (!IS_ALIGNED(addr, 32)) {
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dev_dbg(video->isp->dev,
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"Buffer address must be aligned to 32 bytes boundary.\n");
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return -EINVAL;
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}
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vb2_set_plane_payload(&buffer->vb.vb2_buf, 0,
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vfh->format.fmt.pix.sizeimage);
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buffer->dma = addr;
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return 0;
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}
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/*
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* isp_video_buffer_queue - Add buffer to streaming queue
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* @buf: Video buffer
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*
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* In memory-to-memory mode, start streaming on the pipeline if buffers are
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* queued on both the input and the output, if the pipeline isn't already busy.
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* If the pipeline is busy, it will be restarted in the output module interrupt
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* handler.
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*/
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static void isp_video_buffer_queue(struct vb2_buffer *buf)
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{
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struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(buf);
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struct isp_video_fh *vfh = vb2_get_drv_priv(buf->vb2_queue);
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struct isp_buffer *buffer = to_isp_buffer(vbuf);
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struct isp_video *video = vfh->video;
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struct isp_pipeline *pipe = to_isp_pipeline(&video->video.entity);
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enum isp_pipeline_state state;
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unsigned long flags;
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unsigned int empty;
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unsigned int start;
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spin_lock_irqsave(&video->irqlock, flags);
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if (unlikely(video->error)) {
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vb2_buffer_done(&buffer->vb.vb2_buf, VB2_BUF_STATE_ERROR);
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spin_unlock_irqrestore(&video->irqlock, flags);
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return;
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}
|
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empty = list_empty(&video->dmaqueue);
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list_add_tail(&buffer->irqlist, &video->dmaqueue);
|
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spin_unlock_irqrestore(&video->irqlock, flags);
|
|
if (empty) {
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if (video->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
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state = ISP_PIPELINE_QUEUE_OUTPUT;
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else
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state = ISP_PIPELINE_QUEUE_INPUT;
|
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spin_lock_irqsave(&pipe->lock, flags);
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pipe->state |= state;
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video->ops->queue(video, buffer);
|
video->dmaqueue_flags |= ISP_VIDEO_DMAQUEUE_QUEUED;
|
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start = isp_pipeline_ready(pipe);
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if (start)
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pipe->state |= ISP_PIPELINE_STREAM;
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spin_unlock_irqrestore(&pipe->lock, flags);
|
|
if (start)
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omap3isp_pipeline_set_stream(pipe,
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ISP_PIPELINE_STREAM_SINGLESHOT);
|
}
|
}
|
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/*
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* omap3isp_video_return_buffers - Return all queued buffers to videobuf2
|
* @video: ISP video object
|
* @state: new state for the returned buffers
|
*
|
* Return all buffers queued on the video node to videobuf2 in the given state.
|
* The buffer state should be VB2_BUF_STATE_QUEUED if called due to an error
|
* when starting the stream, or VB2_BUF_STATE_ERROR otherwise.
|
*
|
* The function must be called with the video irqlock held.
|
*/
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static void omap3isp_video_return_buffers(struct isp_video *video,
|
enum vb2_buffer_state state)
|
{
|
while (!list_empty(&video->dmaqueue)) {
|
struct isp_buffer *buf;
|
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buf = list_first_entry(&video->dmaqueue,
|
struct isp_buffer, irqlist);
|
list_del(&buf->irqlist);
|
vb2_buffer_done(&buf->vb.vb2_buf, state);
|
}
|
}
|
|
static int isp_video_start_streaming(struct vb2_queue *queue,
|
unsigned int count)
|
{
|
struct isp_video_fh *vfh = vb2_get_drv_priv(queue);
|
struct isp_video *video = vfh->video;
|
struct isp_pipeline *pipe = to_isp_pipeline(&video->video.entity);
|
unsigned long flags;
|
int ret;
|
|
/* In sensor-to-memory mode, the stream can be started synchronously
|
* to the stream on command. In memory-to-memory mode, it will be
|
* started when buffers are queued on both the input and output.
|
*/
|
if (pipe->input)
|
return 0;
|
|
ret = omap3isp_pipeline_set_stream(pipe,
|
ISP_PIPELINE_STREAM_CONTINUOUS);
|
if (ret < 0) {
|
spin_lock_irqsave(&video->irqlock, flags);
|
omap3isp_video_return_buffers(video, VB2_BUF_STATE_QUEUED);
|
spin_unlock_irqrestore(&video->irqlock, flags);
|
return ret;
|
}
|
|
spin_lock_irqsave(&video->irqlock, flags);
|
if (list_empty(&video->dmaqueue))
|
video->dmaqueue_flags |= ISP_VIDEO_DMAQUEUE_UNDERRUN;
|
spin_unlock_irqrestore(&video->irqlock, flags);
|
|
return 0;
|
}
|
|
static const struct vb2_ops isp_video_queue_ops = {
|
.queue_setup = isp_video_queue_setup,
|
.buf_prepare = isp_video_buffer_prepare,
|
.buf_queue = isp_video_buffer_queue,
|
.start_streaming = isp_video_start_streaming,
|
};
|
|
/*
|
* omap3isp_video_buffer_next - Complete the current buffer and return the next
|
* @video: ISP video object
|
*
|
* Remove the current video buffer from the DMA queue and fill its timestamp and
|
* field count before handing it back to videobuf2.
|
*
|
* For capture video nodes the buffer state is set to VB2_BUF_STATE_DONE if no
|
* error has been flagged in the pipeline, or to VB2_BUF_STATE_ERROR otherwise.
|
* For video output nodes the buffer state is always set to VB2_BUF_STATE_DONE.
|
*
|
* The DMA queue is expected to contain at least one buffer.
|
*
|
* Return a pointer to the next buffer in the DMA queue, or NULL if the queue is
|
* empty.
|
*/
|
struct isp_buffer *omap3isp_video_buffer_next(struct isp_video *video)
|
{
|
struct isp_pipeline *pipe = to_isp_pipeline(&video->video.entity);
|
enum vb2_buffer_state vb_state;
|
struct isp_buffer *buf;
|
unsigned long flags;
|
|
spin_lock_irqsave(&video->irqlock, flags);
|
if (WARN_ON(list_empty(&video->dmaqueue))) {
|
spin_unlock_irqrestore(&video->irqlock, flags);
|
return NULL;
|
}
|
|
buf = list_first_entry(&video->dmaqueue, struct isp_buffer,
|
irqlist);
|
list_del(&buf->irqlist);
|
spin_unlock_irqrestore(&video->irqlock, flags);
|
|
buf->vb.vb2_buf.timestamp = ktime_get_ns();
|
|
/* Do frame number propagation only if this is the output video node.
|
* Frame number either comes from the CSI receivers or it gets
|
* incremented here if H3A is not active.
|
* Note: There is no guarantee that the output buffer will finish
|
* first, so the input number might lag behind by 1 in some cases.
|
*/
|
if (video == pipe->output && !pipe->do_propagation)
|
buf->vb.sequence =
|
atomic_inc_return(&pipe->frame_number);
|
else
|
buf->vb.sequence = atomic_read(&pipe->frame_number);
|
|
if (pipe->field != V4L2_FIELD_NONE)
|
buf->vb.sequence /= 2;
|
|
buf->vb.field = pipe->field;
|
|
/* Report pipeline errors to userspace on the capture device side. */
|
if (video->type == V4L2_BUF_TYPE_VIDEO_CAPTURE && pipe->error) {
|
vb_state = VB2_BUF_STATE_ERROR;
|
pipe->error = false;
|
} else {
|
vb_state = VB2_BUF_STATE_DONE;
|
}
|
|
vb2_buffer_done(&buf->vb.vb2_buf, vb_state);
|
|
spin_lock_irqsave(&video->irqlock, flags);
|
|
if (list_empty(&video->dmaqueue)) {
|
enum isp_pipeline_state state;
|
|
spin_unlock_irqrestore(&video->irqlock, flags);
|
|
if (video->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
|
state = ISP_PIPELINE_QUEUE_OUTPUT
|
| ISP_PIPELINE_STREAM;
|
else
|
state = ISP_PIPELINE_QUEUE_INPUT
|
| ISP_PIPELINE_STREAM;
|
|
spin_lock_irqsave(&pipe->lock, flags);
|
pipe->state &= ~state;
|
if (video->pipe.stream_state == ISP_PIPELINE_STREAM_CONTINUOUS)
|
video->dmaqueue_flags |= ISP_VIDEO_DMAQUEUE_UNDERRUN;
|
spin_unlock_irqrestore(&pipe->lock, flags);
|
return NULL;
|
}
|
|
if (video->type == V4L2_BUF_TYPE_VIDEO_CAPTURE && pipe->input != NULL) {
|
spin_lock(&pipe->lock);
|
pipe->state &= ~ISP_PIPELINE_STREAM;
|
spin_unlock(&pipe->lock);
|
}
|
|
buf = list_first_entry(&video->dmaqueue, struct isp_buffer,
|
irqlist);
|
|
spin_unlock_irqrestore(&video->irqlock, flags);
|
|
return buf;
|
}
|
|
/*
|
* omap3isp_video_cancel_stream - Cancel stream on a video node
|
* @video: ISP video object
|
*
|
* Cancelling a stream returns all buffers queued on the video node to videobuf2
|
* in the erroneous state and makes sure no new buffer can be queued.
|
*/
|
void omap3isp_video_cancel_stream(struct isp_video *video)
|
{
|
unsigned long flags;
|
|
spin_lock_irqsave(&video->irqlock, flags);
|
omap3isp_video_return_buffers(video, VB2_BUF_STATE_ERROR);
|
video->error = true;
|
spin_unlock_irqrestore(&video->irqlock, flags);
|
}
|
|
/*
|
* omap3isp_video_resume - Perform resume operation on the buffers
|
* @video: ISP video object
|
* @continuous: Pipeline is in single shot mode if 0 or continuous mode otherwise
|
*
|
* This function is intended to be used on suspend/resume scenario. It
|
* requests video queue layer to discard buffers marked as DONE if it's in
|
* continuous mode and requests ISP modules to queue again the ACTIVE buffer
|
* if there's any.
|
*/
|
void omap3isp_video_resume(struct isp_video *video, int continuous)
|
{
|
struct isp_buffer *buf = NULL;
|
|
if (continuous && video->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
|
mutex_lock(&video->queue_lock);
|
vb2_discard_done(video->queue);
|
mutex_unlock(&video->queue_lock);
|
}
|
|
if (!list_empty(&video->dmaqueue)) {
|
buf = list_first_entry(&video->dmaqueue,
|
struct isp_buffer, irqlist);
|
video->ops->queue(video, buf);
|
video->dmaqueue_flags |= ISP_VIDEO_DMAQUEUE_QUEUED;
|
} else {
|
if (continuous)
|
video->dmaqueue_flags |= ISP_VIDEO_DMAQUEUE_UNDERRUN;
|
}
|
}
|
|
/* -----------------------------------------------------------------------------
|
* V4L2 ioctls
|
*/
|
|
static int
|
isp_video_querycap(struct file *file, void *fh, struct v4l2_capability *cap)
|
{
|
struct isp_video *video = video_drvdata(file);
|
|
strscpy(cap->driver, ISP_VIDEO_DRIVER_NAME, sizeof(cap->driver));
|
strscpy(cap->card, video->video.name, sizeof(cap->card));
|
strscpy(cap->bus_info, "media", sizeof(cap->bus_info));
|
|
cap->capabilities = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_VIDEO_OUTPUT
|
| V4L2_CAP_STREAMING | V4L2_CAP_DEVICE_CAPS;
|
|
|
return 0;
|
}
|
|
static int
|
isp_video_get_format(struct file *file, void *fh, struct v4l2_format *format)
|
{
|
struct isp_video_fh *vfh = to_isp_video_fh(fh);
|
struct isp_video *video = video_drvdata(file);
|
|
if (format->type != video->type)
|
return -EINVAL;
|
|
mutex_lock(&video->mutex);
|
*format = vfh->format;
|
mutex_unlock(&video->mutex);
|
|
return 0;
|
}
|
|
static int
|
isp_video_set_format(struct file *file, void *fh, struct v4l2_format *format)
|
{
|
struct isp_video_fh *vfh = to_isp_video_fh(fh);
|
struct isp_video *video = video_drvdata(file);
|
struct v4l2_mbus_framefmt fmt;
|
|
if (format->type != video->type)
|
return -EINVAL;
|
|
/* Replace unsupported field orders with sane defaults. */
|
switch (format->fmt.pix.field) {
|
case V4L2_FIELD_NONE:
|
/* Progressive is supported everywhere. */
|
break;
|
case V4L2_FIELD_ALTERNATE:
|
/* ALTERNATE is not supported on output nodes. */
|
if (video->type == V4L2_BUF_TYPE_VIDEO_OUTPUT)
|
format->fmt.pix.field = V4L2_FIELD_NONE;
|
break;
|
case V4L2_FIELD_INTERLACED:
|
/* The ISP has no concept of video standard, select the
|
* top-bottom order when the unqualified interlaced order is
|
* requested.
|
*/
|
format->fmt.pix.field = V4L2_FIELD_INTERLACED_TB;
|
fallthrough;
|
case V4L2_FIELD_INTERLACED_TB:
|
case V4L2_FIELD_INTERLACED_BT:
|
/* Interlaced orders are only supported at the CCDC output. */
|
if (video != &video->isp->isp_ccdc.video_out)
|
format->fmt.pix.field = V4L2_FIELD_NONE;
|
break;
|
case V4L2_FIELD_TOP:
|
case V4L2_FIELD_BOTTOM:
|
case V4L2_FIELD_SEQ_TB:
|
case V4L2_FIELD_SEQ_BT:
|
default:
|
/* All other field orders are currently unsupported, default to
|
* progressive.
|
*/
|
format->fmt.pix.field = V4L2_FIELD_NONE;
|
break;
|
}
|
|
/* Fill the bytesperline and sizeimage fields by converting to media bus
|
* format and back to pixel format.
|
*/
|
isp_video_pix_to_mbus(&format->fmt.pix, &fmt);
|
isp_video_mbus_to_pix(video, &fmt, &format->fmt.pix);
|
|
mutex_lock(&video->mutex);
|
vfh->format = *format;
|
mutex_unlock(&video->mutex);
|
|
return 0;
|
}
|
|
static int
|
isp_video_try_format(struct file *file, void *fh, struct v4l2_format *format)
|
{
|
struct isp_video *video = video_drvdata(file);
|
struct v4l2_subdev_format fmt;
|
struct v4l2_subdev *subdev;
|
u32 pad;
|
int ret;
|
|
if (format->type != video->type)
|
return -EINVAL;
|
|
subdev = isp_video_remote_subdev(video, &pad);
|
if (subdev == NULL)
|
return -EINVAL;
|
|
isp_video_pix_to_mbus(&format->fmt.pix, &fmt.format);
|
|
fmt.pad = pad;
|
fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE;
|
ret = v4l2_subdev_call(subdev, pad, get_fmt, NULL, &fmt);
|
if (ret)
|
return ret == -ENOIOCTLCMD ? -ENOTTY : ret;
|
|
isp_video_mbus_to_pix(video, &fmt.format, &format->fmt.pix);
|
return 0;
|
}
|
|
static int
|
isp_video_get_selection(struct file *file, void *fh, struct v4l2_selection *sel)
|
{
|
struct isp_video *video = video_drvdata(file);
|
struct v4l2_subdev_format format;
|
struct v4l2_subdev *subdev;
|
struct v4l2_subdev_selection sdsel = {
|
.which = V4L2_SUBDEV_FORMAT_ACTIVE,
|
.target = sel->target,
|
};
|
u32 pad;
|
int ret;
|
|
switch (sel->target) {
|
case V4L2_SEL_TGT_CROP:
|
case V4L2_SEL_TGT_CROP_BOUNDS:
|
case V4L2_SEL_TGT_CROP_DEFAULT:
|
if (video->type == V4L2_BUF_TYPE_VIDEO_OUTPUT)
|
return -EINVAL;
|
break;
|
case V4L2_SEL_TGT_COMPOSE:
|
case V4L2_SEL_TGT_COMPOSE_BOUNDS:
|
case V4L2_SEL_TGT_COMPOSE_DEFAULT:
|
if (video->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
|
return -EINVAL;
|
break;
|
default:
|
return -EINVAL;
|
}
|
subdev = isp_video_remote_subdev(video, &pad);
|
if (subdev == NULL)
|
return -EINVAL;
|
|
/* Try the get selection operation first and fallback to get format if not
|
* implemented.
|
*/
|
sdsel.pad = pad;
|
ret = v4l2_subdev_call(subdev, pad, get_selection, NULL, &sdsel);
|
if (!ret)
|
sel->r = sdsel.r;
|
if (ret != -ENOIOCTLCMD)
|
return ret;
|
|
format.pad = pad;
|
format.which = V4L2_SUBDEV_FORMAT_ACTIVE;
|
ret = v4l2_subdev_call(subdev, pad, get_fmt, NULL, &format);
|
if (ret < 0)
|
return ret == -ENOIOCTLCMD ? -ENOTTY : ret;
|
|
sel->r.left = 0;
|
sel->r.top = 0;
|
sel->r.width = format.format.width;
|
sel->r.height = format.format.height;
|
|
return 0;
|
}
|
|
static int
|
isp_video_set_selection(struct file *file, void *fh, struct v4l2_selection *sel)
|
{
|
struct isp_video *video = video_drvdata(file);
|
struct v4l2_subdev *subdev;
|
struct v4l2_subdev_selection sdsel = {
|
.which = V4L2_SUBDEV_FORMAT_ACTIVE,
|
.target = sel->target,
|
.flags = sel->flags,
|
.r = sel->r,
|
};
|
u32 pad;
|
int ret;
|
|
switch (sel->target) {
|
case V4L2_SEL_TGT_CROP:
|
if (video->type == V4L2_BUF_TYPE_VIDEO_OUTPUT)
|
return -EINVAL;
|
break;
|
case V4L2_SEL_TGT_COMPOSE:
|
if (video->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
|
return -EINVAL;
|
break;
|
default:
|
return -EINVAL;
|
}
|
subdev = isp_video_remote_subdev(video, &pad);
|
if (subdev == NULL)
|
return -EINVAL;
|
|
sdsel.pad = pad;
|
mutex_lock(&video->mutex);
|
ret = v4l2_subdev_call(subdev, pad, set_selection, NULL, &sdsel);
|
mutex_unlock(&video->mutex);
|
if (!ret)
|
sel->r = sdsel.r;
|
|
return ret == -ENOIOCTLCMD ? -ENOTTY : ret;
|
}
|
|
static int
|
isp_video_get_param(struct file *file, void *fh, struct v4l2_streamparm *a)
|
{
|
struct isp_video_fh *vfh = to_isp_video_fh(fh);
|
struct isp_video *video = video_drvdata(file);
|
|
if (video->type != V4L2_BUF_TYPE_VIDEO_OUTPUT ||
|
video->type != a->type)
|
return -EINVAL;
|
|
memset(a, 0, sizeof(*a));
|
a->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
|
a->parm.output.capability = V4L2_CAP_TIMEPERFRAME;
|
a->parm.output.timeperframe = vfh->timeperframe;
|
|
return 0;
|
}
|
|
static int
|
isp_video_set_param(struct file *file, void *fh, struct v4l2_streamparm *a)
|
{
|
struct isp_video_fh *vfh = to_isp_video_fh(fh);
|
struct isp_video *video = video_drvdata(file);
|
|
if (video->type != V4L2_BUF_TYPE_VIDEO_OUTPUT ||
|
video->type != a->type)
|
return -EINVAL;
|
|
if (a->parm.output.timeperframe.denominator == 0)
|
a->parm.output.timeperframe.denominator = 1;
|
|
vfh->timeperframe = a->parm.output.timeperframe;
|
|
return 0;
|
}
|
|
static int
|
isp_video_reqbufs(struct file *file, void *fh, struct v4l2_requestbuffers *rb)
|
{
|
struct isp_video_fh *vfh = to_isp_video_fh(fh);
|
struct isp_video *video = video_drvdata(file);
|
int ret;
|
|
mutex_lock(&video->queue_lock);
|
ret = vb2_reqbufs(&vfh->queue, rb);
|
mutex_unlock(&video->queue_lock);
|
|
return ret;
|
}
|
|
static int
|
isp_video_querybuf(struct file *file, void *fh, struct v4l2_buffer *b)
|
{
|
struct isp_video_fh *vfh = to_isp_video_fh(fh);
|
struct isp_video *video = video_drvdata(file);
|
int ret;
|
|
mutex_lock(&video->queue_lock);
|
ret = vb2_querybuf(&vfh->queue, b);
|
mutex_unlock(&video->queue_lock);
|
|
return ret;
|
}
|
|
static int
|
isp_video_qbuf(struct file *file, void *fh, struct v4l2_buffer *b)
|
{
|
struct isp_video_fh *vfh = to_isp_video_fh(fh);
|
struct isp_video *video = video_drvdata(file);
|
int ret;
|
|
mutex_lock(&video->queue_lock);
|
ret = vb2_qbuf(&vfh->queue, video->video.v4l2_dev->mdev, b);
|
mutex_unlock(&video->queue_lock);
|
|
return ret;
|
}
|
|
static int
|
isp_video_dqbuf(struct file *file, void *fh, struct v4l2_buffer *b)
|
{
|
struct isp_video_fh *vfh = to_isp_video_fh(fh);
|
struct isp_video *video = video_drvdata(file);
|
int ret;
|
|
mutex_lock(&video->queue_lock);
|
ret = vb2_dqbuf(&vfh->queue, b, file->f_flags & O_NONBLOCK);
|
mutex_unlock(&video->queue_lock);
|
|
return ret;
|
}
|
|
static int isp_video_check_external_subdevs(struct isp_video *video,
|
struct isp_pipeline *pipe)
|
{
|
struct isp_device *isp = video->isp;
|
struct media_entity *ents[] = {
|
&isp->isp_csi2a.subdev.entity,
|
&isp->isp_csi2c.subdev.entity,
|
&isp->isp_ccp2.subdev.entity,
|
&isp->isp_ccdc.subdev.entity
|
};
|
struct media_pad *source_pad;
|
struct media_entity *source = NULL;
|
struct media_entity *sink;
|
struct v4l2_subdev_format fmt;
|
struct v4l2_ext_controls ctrls;
|
struct v4l2_ext_control ctrl;
|
unsigned int i;
|
int ret;
|
|
/* Memory-to-memory pipelines have no external subdev. */
|
if (pipe->input != NULL)
|
return 0;
|
|
for (i = 0; i < ARRAY_SIZE(ents); i++) {
|
/* Is the entity part of the pipeline? */
|
if (!media_entity_enum_test(&pipe->ent_enum, ents[i]))
|
continue;
|
|
/* ISP entities have always sink pad == 0. Find source. */
|
source_pad = media_entity_remote_pad(&ents[i]->pads[0]);
|
if (source_pad == NULL)
|
continue;
|
|
source = source_pad->entity;
|
sink = ents[i];
|
break;
|
}
|
|
if (!source) {
|
dev_warn(isp->dev, "can't find source, failing now\n");
|
return -EINVAL;
|
}
|
|
if (!is_media_entity_v4l2_subdev(source))
|
return 0;
|
|
pipe->external = media_entity_to_v4l2_subdev(source);
|
|
fmt.pad = source_pad->index;
|
fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE;
|
ret = v4l2_subdev_call(media_entity_to_v4l2_subdev(sink),
|
pad, get_fmt, NULL, &fmt);
|
if (unlikely(ret < 0)) {
|
dev_warn(isp->dev, "get_fmt returned null!\n");
|
return ret;
|
}
|
|
pipe->external_width =
|
omap3isp_video_format_info(fmt.format.code)->width;
|
|
memset(&ctrls, 0, sizeof(ctrls));
|
memset(&ctrl, 0, sizeof(ctrl));
|
|
ctrl.id = V4L2_CID_PIXEL_RATE;
|
|
ctrls.count = 1;
|
ctrls.controls = &ctrl;
|
ret = v4l2_g_ext_ctrls(pipe->external->ctrl_handler, &video->video,
|
NULL, &ctrls);
|
if (ret < 0) {
|
dev_warn(isp->dev, "no pixel rate control in subdev %s\n",
|
pipe->external->name);
|
return ret;
|
}
|
|
pipe->external_rate = ctrl.value64;
|
|
if (media_entity_enum_test(&pipe->ent_enum,
|
&isp->isp_ccdc.subdev.entity)) {
|
unsigned int rate = UINT_MAX;
|
/*
|
* Check that maximum allowed CCDC pixel rate isn't
|
* exceeded by the pixel rate.
|
*/
|
omap3isp_ccdc_max_rate(&isp->isp_ccdc, &rate);
|
if (pipe->external_rate > rate)
|
return -ENOSPC;
|
}
|
|
return 0;
|
}
|
|
/*
|
* Stream management
|
*
|
* Every ISP pipeline has a single input and a single output. The input can be
|
* either a sensor or a video node. The output is always a video node.
|
*
|
* As every pipeline has an output video node, the ISP video objects at the
|
* pipeline output stores the pipeline state. It tracks the streaming state of
|
* both the input and output, as well as the availability of buffers.
|
*
|
* In sensor-to-memory mode, frames are always available at the pipeline input.
|
* Starting the sensor usually requires I2C transfers and must be done in
|
* interruptible context. The pipeline is started and stopped synchronously
|
* to the stream on/off commands. All modules in the pipeline will get their
|
* subdev set stream handler called. The module at the end of the pipeline must
|
* delay starting the hardware until buffers are available at its output.
|
*
|
* In memory-to-memory mode, starting/stopping the stream requires
|
* synchronization between the input and output. ISP modules can't be stopped
|
* in the middle of a frame, and at least some of the modules seem to become
|
* busy as soon as they're started, even if they don't receive a frame start
|
* event. For that reason frames need to be processed in single-shot mode. The
|
* driver needs to wait until a frame is completely processed and written to
|
* memory before restarting the pipeline for the next frame. Pipelined
|
* processing might be possible but requires more testing.
|
*
|
* Stream start must be delayed until buffers are available at both the input
|
* and output. The pipeline must be started in the videobuf queue callback with
|
* the buffers queue spinlock held. The modules subdev set stream operation must
|
* not sleep.
|
*/
|
static int
|
isp_video_streamon(struct file *file, void *fh, enum v4l2_buf_type type)
|
{
|
struct isp_video_fh *vfh = to_isp_video_fh(fh);
|
struct isp_video *video = video_drvdata(file);
|
enum isp_pipeline_state state;
|
struct isp_pipeline *pipe;
|
unsigned long flags;
|
int ret;
|
|
if (type != video->type)
|
return -EINVAL;
|
|
mutex_lock(&video->stream_lock);
|
|
/* Start streaming on the pipeline. No link touching an entity in the
|
* pipeline can be activated or deactivated once streaming is started.
|
*/
|
pipe = video->video.entity.pipe
|
? to_isp_pipeline(&video->video.entity) : &video->pipe;
|
|
ret = media_entity_enum_init(&pipe->ent_enum, &video->isp->media_dev);
|
if (ret)
|
goto err_enum_init;
|
|
/* TODO: Implement PM QoS */
|
pipe->l3_ick = clk_get_rate(video->isp->clock[ISP_CLK_L3_ICK]);
|
pipe->max_rate = pipe->l3_ick;
|
|
ret = media_pipeline_start(&video->video.entity, &pipe->pipe);
|
if (ret < 0)
|
goto err_pipeline_start;
|
|
/* Verify that the currently configured format matches the output of
|
* the connected subdev.
|
*/
|
ret = isp_video_check_format(video, vfh);
|
if (ret < 0)
|
goto err_check_format;
|
|
video->bpl_padding = ret;
|
video->bpl_value = vfh->format.fmt.pix.bytesperline;
|
|
ret = isp_video_get_graph_data(video, pipe);
|
if (ret < 0)
|
goto err_check_format;
|
|
if (video->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
|
state = ISP_PIPELINE_STREAM_OUTPUT | ISP_PIPELINE_IDLE_OUTPUT;
|
else
|
state = ISP_PIPELINE_STREAM_INPUT | ISP_PIPELINE_IDLE_INPUT;
|
|
ret = isp_video_check_external_subdevs(video, pipe);
|
if (ret < 0)
|
goto err_check_format;
|
|
pipe->error = false;
|
|
spin_lock_irqsave(&pipe->lock, flags);
|
pipe->state &= ~ISP_PIPELINE_STREAM;
|
pipe->state |= state;
|
spin_unlock_irqrestore(&pipe->lock, flags);
|
|
/* Set the maximum time per frame as the value requested by userspace.
|
* This is a soft limit that can be overridden if the hardware doesn't
|
* support the request limit.
|
*/
|
if (video->type == V4L2_BUF_TYPE_VIDEO_OUTPUT)
|
pipe->max_timeperframe = vfh->timeperframe;
|
|
video->queue = &vfh->queue;
|
INIT_LIST_HEAD(&video->dmaqueue);
|
atomic_set(&pipe->frame_number, -1);
|
pipe->field = vfh->format.fmt.pix.field;
|
|
mutex_lock(&video->queue_lock);
|
ret = vb2_streamon(&vfh->queue, type);
|
mutex_unlock(&video->queue_lock);
|
if (ret < 0)
|
goto err_check_format;
|
|
mutex_unlock(&video->stream_lock);
|
|
return 0;
|
|
err_check_format:
|
media_pipeline_stop(&video->video.entity);
|
err_pipeline_start:
|
/* TODO: Implement PM QoS */
|
/* The DMA queue must be emptied here, otherwise CCDC interrupts that
|
* will get triggered the next time the CCDC is powered up will try to
|
* access buffers that might have been freed but still present in the
|
* DMA queue. This can easily get triggered if the above
|
* omap3isp_pipeline_set_stream() call fails on a system with a
|
* free-running sensor.
|
*/
|
INIT_LIST_HEAD(&video->dmaqueue);
|
video->queue = NULL;
|
|
media_entity_enum_cleanup(&pipe->ent_enum);
|
|
err_enum_init:
|
mutex_unlock(&video->stream_lock);
|
|
return ret;
|
}
|
|
static int
|
isp_video_streamoff(struct file *file, void *fh, enum v4l2_buf_type type)
|
{
|
struct isp_video_fh *vfh = to_isp_video_fh(fh);
|
struct isp_video *video = video_drvdata(file);
|
struct isp_pipeline *pipe = to_isp_pipeline(&video->video.entity);
|
enum isp_pipeline_state state;
|
unsigned int streaming;
|
unsigned long flags;
|
|
if (type != video->type)
|
return -EINVAL;
|
|
mutex_lock(&video->stream_lock);
|
|
/* Make sure we're not streaming yet. */
|
mutex_lock(&video->queue_lock);
|
streaming = vb2_is_streaming(&vfh->queue);
|
mutex_unlock(&video->queue_lock);
|
|
if (!streaming)
|
goto done;
|
|
/* Update the pipeline state. */
|
if (video->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
|
state = ISP_PIPELINE_STREAM_OUTPUT
|
| ISP_PIPELINE_QUEUE_OUTPUT;
|
else
|
state = ISP_PIPELINE_STREAM_INPUT
|
| ISP_PIPELINE_QUEUE_INPUT;
|
|
spin_lock_irqsave(&pipe->lock, flags);
|
pipe->state &= ~state;
|
spin_unlock_irqrestore(&pipe->lock, flags);
|
|
/* Stop the stream. */
|
omap3isp_pipeline_set_stream(pipe, ISP_PIPELINE_STREAM_STOPPED);
|
omap3isp_video_cancel_stream(video);
|
|
mutex_lock(&video->queue_lock);
|
vb2_streamoff(&vfh->queue, type);
|
mutex_unlock(&video->queue_lock);
|
video->queue = NULL;
|
video->error = false;
|
|
/* TODO: Implement PM QoS */
|
media_pipeline_stop(&video->video.entity);
|
|
media_entity_enum_cleanup(&pipe->ent_enum);
|
|
done:
|
mutex_unlock(&video->stream_lock);
|
return 0;
|
}
|
|
static int
|
isp_video_enum_input(struct file *file, void *fh, struct v4l2_input *input)
|
{
|
if (input->index > 0)
|
return -EINVAL;
|
|
strscpy(input->name, "camera", sizeof(input->name));
|
input->type = V4L2_INPUT_TYPE_CAMERA;
|
|
return 0;
|
}
|
|
static int
|
isp_video_g_input(struct file *file, void *fh, unsigned int *input)
|
{
|
*input = 0;
|
|
return 0;
|
}
|
|
static int
|
isp_video_s_input(struct file *file, void *fh, unsigned int input)
|
{
|
return input == 0 ? 0 : -EINVAL;
|
}
|
|
static const struct v4l2_ioctl_ops isp_video_ioctl_ops = {
|
.vidioc_querycap = isp_video_querycap,
|
.vidioc_g_fmt_vid_cap = isp_video_get_format,
|
.vidioc_s_fmt_vid_cap = isp_video_set_format,
|
.vidioc_try_fmt_vid_cap = isp_video_try_format,
|
.vidioc_g_fmt_vid_out = isp_video_get_format,
|
.vidioc_s_fmt_vid_out = isp_video_set_format,
|
.vidioc_try_fmt_vid_out = isp_video_try_format,
|
.vidioc_g_selection = isp_video_get_selection,
|
.vidioc_s_selection = isp_video_set_selection,
|
.vidioc_g_parm = isp_video_get_param,
|
.vidioc_s_parm = isp_video_set_param,
|
.vidioc_reqbufs = isp_video_reqbufs,
|
.vidioc_querybuf = isp_video_querybuf,
|
.vidioc_qbuf = isp_video_qbuf,
|
.vidioc_dqbuf = isp_video_dqbuf,
|
.vidioc_streamon = isp_video_streamon,
|
.vidioc_streamoff = isp_video_streamoff,
|
.vidioc_enum_input = isp_video_enum_input,
|
.vidioc_g_input = isp_video_g_input,
|
.vidioc_s_input = isp_video_s_input,
|
};
|
|
/* -----------------------------------------------------------------------------
|
* V4L2 file operations
|
*/
|
|
static int isp_video_open(struct file *file)
|
{
|
struct isp_video *video = video_drvdata(file);
|
struct isp_video_fh *handle;
|
struct vb2_queue *queue;
|
int ret = 0;
|
|
handle = kzalloc(sizeof(*handle), GFP_KERNEL);
|
if (handle == NULL)
|
return -ENOMEM;
|
|
v4l2_fh_init(&handle->vfh, &video->video);
|
v4l2_fh_add(&handle->vfh);
|
|
/* If this is the first user, initialise the pipeline. */
|
if (omap3isp_get(video->isp) == NULL) {
|
ret = -EBUSY;
|
goto done;
|
}
|
|
ret = v4l2_pipeline_pm_get(&video->video.entity);
|
if (ret < 0) {
|
omap3isp_put(video->isp);
|
goto done;
|
}
|
|
queue = &handle->queue;
|
queue->type = video->type;
|
queue->io_modes = VB2_MMAP | VB2_USERPTR;
|
queue->drv_priv = handle;
|
queue->ops = &isp_video_queue_ops;
|
queue->mem_ops = &vb2_dma_contig_memops;
|
queue->buf_struct_size = sizeof(struct isp_buffer);
|
queue->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
|
queue->dev = video->isp->dev;
|
|
ret = vb2_queue_init(&handle->queue);
|
if (ret < 0) {
|
omap3isp_put(video->isp);
|
goto done;
|
}
|
|
memset(&handle->format, 0, sizeof(handle->format));
|
handle->format.type = video->type;
|
handle->timeperframe.denominator = 1;
|
|
handle->video = video;
|
file->private_data = &handle->vfh;
|
|
done:
|
if (ret < 0) {
|
v4l2_fh_del(&handle->vfh);
|
v4l2_fh_exit(&handle->vfh);
|
kfree(handle);
|
}
|
|
return ret;
|
}
|
|
static int isp_video_release(struct file *file)
|
{
|
struct isp_video *video = video_drvdata(file);
|
struct v4l2_fh *vfh = file->private_data;
|
struct isp_video_fh *handle = to_isp_video_fh(vfh);
|
|
/* Disable streaming and free the buffers queue resources. */
|
isp_video_streamoff(file, vfh, video->type);
|
|
mutex_lock(&video->queue_lock);
|
vb2_queue_release(&handle->queue);
|
mutex_unlock(&video->queue_lock);
|
|
v4l2_pipeline_pm_put(&video->video.entity);
|
|
/* Release the file handle. */
|
v4l2_fh_del(vfh);
|
v4l2_fh_exit(vfh);
|
kfree(handle);
|
file->private_data = NULL;
|
|
omap3isp_put(video->isp);
|
|
return 0;
|
}
|
|
static __poll_t isp_video_poll(struct file *file, poll_table *wait)
|
{
|
struct isp_video_fh *vfh = to_isp_video_fh(file->private_data);
|
struct isp_video *video = video_drvdata(file);
|
__poll_t ret;
|
|
mutex_lock(&video->queue_lock);
|
ret = vb2_poll(&vfh->queue, file, wait);
|
mutex_unlock(&video->queue_lock);
|
|
return ret;
|
}
|
|
static int isp_video_mmap(struct file *file, struct vm_area_struct *vma)
|
{
|
struct isp_video_fh *vfh = to_isp_video_fh(file->private_data);
|
|
return vb2_mmap(&vfh->queue, vma);
|
}
|
|
static const struct v4l2_file_operations isp_video_fops = {
|
.owner = THIS_MODULE,
|
.unlocked_ioctl = video_ioctl2,
|
.open = isp_video_open,
|
.release = isp_video_release,
|
.poll = isp_video_poll,
|
.mmap = isp_video_mmap,
|
};
|
|
/* -----------------------------------------------------------------------------
|
* ISP video core
|
*/
|
|
static const struct isp_video_operations isp_video_dummy_ops = {
|
};
|
|
int omap3isp_video_init(struct isp_video *video, const char *name)
|
{
|
const char *direction;
|
int ret;
|
|
switch (video->type) {
|
case V4L2_BUF_TYPE_VIDEO_CAPTURE:
|
direction = "output";
|
video->pad.flags = MEDIA_PAD_FL_SINK
|
| MEDIA_PAD_FL_MUST_CONNECT;
|
break;
|
case V4L2_BUF_TYPE_VIDEO_OUTPUT:
|
direction = "input";
|
video->pad.flags = MEDIA_PAD_FL_SOURCE
|
| MEDIA_PAD_FL_MUST_CONNECT;
|
video->video.vfl_dir = VFL_DIR_TX;
|
break;
|
|
default:
|
return -EINVAL;
|
}
|
|
ret = media_entity_pads_init(&video->video.entity, 1, &video->pad);
|
if (ret < 0)
|
return ret;
|
|
mutex_init(&video->mutex);
|
atomic_set(&video->active, 0);
|
|
spin_lock_init(&video->pipe.lock);
|
mutex_init(&video->stream_lock);
|
mutex_init(&video->queue_lock);
|
spin_lock_init(&video->irqlock);
|
|
/* Initialize the video device. */
|
if (video->ops == NULL)
|
video->ops = &isp_video_dummy_ops;
|
|
video->video.fops = &isp_video_fops;
|
snprintf(video->video.name, sizeof(video->video.name),
|
"OMAP3 ISP %s %s", name, direction);
|
video->video.vfl_type = VFL_TYPE_VIDEO;
|
video->video.release = video_device_release_empty;
|
video->video.ioctl_ops = &isp_video_ioctl_ops;
|
if (video->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
|
video->video.device_caps = V4L2_CAP_VIDEO_CAPTURE
|
| V4L2_CAP_STREAMING;
|
else
|
video->video.device_caps = V4L2_CAP_VIDEO_OUTPUT
|
| V4L2_CAP_STREAMING;
|
|
video->pipe.stream_state = ISP_PIPELINE_STREAM_STOPPED;
|
|
video_set_drvdata(&video->video, video);
|
|
return 0;
|
}
|
|
void omap3isp_video_cleanup(struct isp_video *video)
|
{
|
media_entity_cleanup(&video->video.entity);
|
mutex_destroy(&video->queue_lock);
|
mutex_destroy(&video->stream_lock);
|
mutex_destroy(&video->mutex);
|
}
|
|
int omap3isp_video_register(struct isp_video *video, struct v4l2_device *vdev)
|
{
|
int ret;
|
|
video->video.v4l2_dev = vdev;
|
|
ret = video_register_device(&video->video, VFL_TYPE_VIDEO, -1);
|
if (ret < 0)
|
dev_err(video->isp->dev,
|
"%s: could not register video device (%d)\n",
|
__func__, ret);
|
|
return ret;
|
}
|
|
void omap3isp_video_unregister(struct isp_video *video)
|
{
|
video_unregister_device(&video->video);
|
}
|
