959 lines
26 KiB
C
959 lines
26 KiB
C
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// SPDX-License-Identifier: GPL-2.0
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/*
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* camss-video.c
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*
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* Qualcomm MSM Camera Subsystem - V4L2 device node
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*
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* Copyright (c) 2013-2015, The Linux Foundation. All rights reserved.
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* Copyright (C) 2015-2018 Linaro Ltd.
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*/
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#include <linux/slab.h>
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#include <media/media-entity.h>
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#include <media/v4l2-dev.h>
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#include <media/v4l2-device.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-sg.h>
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#include "camss-video.h"
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#include "camss.h"
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struct fract {
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u8 numerator;
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u8 denominator;
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};
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/*
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* struct camss_format_info - ISP media bus format information
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* @code: V4L2 media bus format code
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* @pixelformat: V4L2 pixel format FCC identifier
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* @planes: Number of planes
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* @hsub: Horizontal subsampling (for each plane)
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* @vsub: Vertical subsampling (for each plane)
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* @bpp: Bits per pixel when stored in memory (for each plane)
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*/
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struct camss_format_info {
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u32 code;
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u32 pixelformat;
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u8 planes;
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struct fract hsub[3];
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struct fract vsub[3];
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unsigned int bpp[3];
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};
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static const struct camss_format_info formats_rdi_8x16[] = {
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{ MEDIA_BUS_FMT_UYVY8_2X8, V4L2_PIX_FMT_UYVY, 1,
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{ { 1, 1 } }, { { 1, 1 } }, { 16 } },
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{ MEDIA_BUS_FMT_VYUY8_2X8, V4L2_PIX_FMT_VYUY, 1,
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{ { 1, 1 } }, { { 1, 1 } }, { 16 } },
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{ MEDIA_BUS_FMT_YUYV8_2X8, V4L2_PIX_FMT_YUYV, 1,
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{ { 1, 1 } }, { { 1, 1 } }, { 16 } },
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{ MEDIA_BUS_FMT_YVYU8_2X8, V4L2_PIX_FMT_YVYU, 1,
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{ { 1, 1 } }, { { 1, 1 } }, { 16 } },
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{ MEDIA_BUS_FMT_SBGGR8_1X8, V4L2_PIX_FMT_SBGGR8, 1,
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{ { 1, 1 } }, { { 1, 1 } }, { 8 } },
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{ MEDIA_BUS_FMT_SGBRG8_1X8, V4L2_PIX_FMT_SGBRG8, 1,
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{ { 1, 1 } }, { { 1, 1 } }, { 8 } },
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{ MEDIA_BUS_FMT_SGRBG8_1X8, V4L2_PIX_FMT_SGRBG8, 1,
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{ { 1, 1 } }, { { 1, 1 } }, { 8 } },
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{ MEDIA_BUS_FMT_SRGGB8_1X8, V4L2_PIX_FMT_SRGGB8, 1,
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{ { 1, 1 } }, { { 1, 1 } }, { 8 } },
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{ MEDIA_BUS_FMT_SBGGR10_1X10, V4L2_PIX_FMT_SBGGR10P, 1,
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{ { 1, 1 } }, { { 1, 1 } }, { 10 } },
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{ MEDIA_BUS_FMT_SGBRG10_1X10, V4L2_PIX_FMT_SGBRG10P, 1,
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{ { 1, 1 } }, { { 1, 1 } }, { 10 } },
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{ MEDIA_BUS_FMT_SGRBG10_1X10, V4L2_PIX_FMT_SGRBG10P, 1,
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{ { 1, 1 } }, { { 1, 1 } }, { 10 } },
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{ MEDIA_BUS_FMT_SRGGB10_1X10, V4L2_PIX_FMT_SRGGB10P, 1,
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{ { 1, 1 } }, { { 1, 1 } }, { 10 } },
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{ MEDIA_BUS_FMT_SBGGR12_1X12, V4L2_PIX_FMT_SBGGR12P, 1,
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{ { 1, 1 } }, { { 1, 1 } }, { 12 } },
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{ MEDIA_BUS_FMT_SGBRG12_1X12, V4L2_PIX_FMT_SGBRG12P, 1,
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{ { 1, 1 } }, { { 1, 1 } }, { 12 } },
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{ MEDIA_BUS_FMT_SGRBG12_1X12, V4L2_PIX_FMT_SGRBG12P, 1,
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{ { 1, 1 } }, { { 1, 1 } }, { 12 } },
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{ MEDIA_BUS_FMT_SRGGB12_1X12, V4L2_PIX_FMT_SRGGB12P, 1,
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{ { 1, 1 } }, { { 1, 1 } }, { 12 } },
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{ MEDIA_BUS_FMT_Y10_1X10, V4L2_PIX_FMT_Y10P, 1,
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{ { 1, 1 } }, { { 1, 1 } }, { 10 } },
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};
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static const struct camss_format_info formats_rdi_8x96[] = {
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{ MEDIA_BUS_FMT_UYVY8_2X8, V4L2_PIX_FMT_UYVY, 1,
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{ { 1, 1 } }, { { 1, 1 } }, { 16 } },
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{ MEDIA_BUS_FMT_VYUY8_2X8, V4L2_PIX_FMT_VYUY, 1,
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{ { 1, 1 } }, { { 1, 1 } }, { 16 } },
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{ MEDIA_BUS_FMT_YUYV8_2X8, V4L2_PIX_FMT_YUYV, 1,
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{ { 1, 1 } }, { { 1, 1 } }, { 16 } },
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{ MEDIA_BUS_FMT_YVYU8_2X8, V4L2_PIX_FMT_YVYU, 1,
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{ { 1, 1 } }, { { 1, 1 } }, { 16 } },
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{ MEDIA_BUS_FMT_SBGGR8_1X8, V4L2_PIX_FMT_SBGGR8, 1,
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{ { 1, 1 } }, { { 1, 1 } }, { 8 } },
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{ MEDIA_BUS_FMT_SGBRG8_1X8, V4L2_PIX_FMT_SGBRG8, 1,
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{ { 1, 1 } }, { { 1, 1 } }, { 8 } },
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{ MEDIA_BUS_FMT_SGRBG8_1X8, V4L2_PIX_FMT_SGRBG8, 1,
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{ { 1, 1 } }, { { 1, 1 } }, { 8 } },
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{ MEDIA_BUS_FMT_SRGGB8_1X8, V4L2_PIX_FMT_SRGGB8, 1,
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{ { 1, 1 } }, { { 1, 1 } }, { 8 } },
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{ MEDIA_BUS_FMT_SBGGR10_1X10, V4L2_PIX_FMT_SBGGR10P, 1,
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{ { 1, 1 } }, { { 1, 1 } }, { 10 } },
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{ MEDIA_BUS_FMT_SGBRG10_1X10, V4L2_PIX_FMT_SGBRG10P, 1,
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{ { 1, 1 } }, { { 1, 1 } }, { 10 } },
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{ MEDIA_BUS_FMT_SGRBG10_1X10, V4L2_PIX_FMT_SGRBG10P, 1,
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{ { 1, 1 } }, { { 1, 1 } }, { 10 } },
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{ MEDIA_BUS_FMT_SRGGB10_1X10, V4L2_PIX_FMT_SRGGB10P, 1,
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{ { 1, 1 } }, { { 1, 1 } }, { 10 } },
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{ MEDIA_BUS_FMT_SBGGR10_2X8_PADHI_LE, V4L2_PIX_FMT_SBGGR10, 1,
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{ { 1, 1 } }, { { 1, 1 } }, { 16 } },
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{ MEDIA_BUS_FMT_SBGGR12_1X12, V4L2_PIX_FMT_SBGGR12P, 1,
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{ { 1, 1 } }, { { 1, 1 } }, { 12 } },
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{ MEDIA_BUS_FMT_SGBRG12_1X12, V4L2_PIX_FMT_SGBRG12P, 1,
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{ { 1, 1 } }, { { 1, 1 } }, { 12 } },
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{ MEDIA_BUS_FMT_SGRBG12_1X12, V4L2_PIX_FMT_SGRBG12P, 1,
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{ { 1, 1 } }, { { 1, 1 } }, { 12 } },
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{ MEDIA_BUS_FMT_SRGGB12_1X12, V4L2_PIX_FMT_SRGGB12P, 1,
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{ { 1, 1 } }, { { 1, 1 } }, { 12 } },
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{ MEDIA_BUS_FMT_SBGGR14_1X14, V4L2_PIX_FMT_SBGGR14P, 1,
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{ { 1, 1 } }, { { 1, 1 } }, { 14 } },
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{ MEDIA_BUS_FMT_SGBRG14_1X14, V4L2_PIX_FMT_SGBRG14P, 1,
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{ { 1, 1 } }, { { 1, 1 } }, { 14 } },
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{ MEDIA_BUS_FMT_SGRBG14_1X14, V4L2_PIX_FMT_SGRBG14P, 1,
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{ { 1, 1 } }, { { 1, 1 } }, { 14 } },
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{ MEDIA_BUS_FMT_SRGGB14_1X14, V4L2_PIX_FMT_SRGGB14P, 1,
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{ { 1, 1 } }, { { 1, 1 } }, { 14 } },
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{ MEDIA_BUS_FMT_Y10_1X10, V4L2_PIX_FMT_Y10P, 1,
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{ { 1, 1 } }, { { 1, 1 } }, { 10 } },
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{ MEDIA_BUS_FMT_Y10_2X8_PADHI_LE, V4L2_PIX_FMT_Y10, 1,
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{ { 1, 1 } }, { { 1, 1 } }, { 16 } },
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};
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static const struct camss_format_info formats_pix_8x16[] = {
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{ MEDIA_BUS_FMT_YUYV8_1_5X8, V4L2_PIX_FMT_NV12, 1,
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{ { 1, 1 } }, { { 2, 3 } }, { 8 } },
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{ MEDIA_BUS_FMT_YVYU8_1_5X8, V4L2_PIX_FMT_NV12, 1,
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{ { 1, 1 } }, { { 2, 3 } }, { 8 } },
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{ MEDIA_BUS_FMT_UYVY8_1_5X8, V4L2_PIX_FMT_NV12, 1,
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{ { 1, 1 } }, { { 2, 3 } }, { 8 } },
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{ MEDIA_BUS_FMT_VYUY8_1_5X8, V4L2_PIX_FMT_NV12, 1,
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{ { 1, 1 } }, { { 2, 3 } }, { 8 } },
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{ MEDIA_BUS_FMT_YUYV8_1_5X8, V4L2_PIX_FMT_NV21, 1,
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{ { 1, 1 } }, { { 2, 3 } }, { 8 } },
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{ MEDIA_BUS_FMT_YVYU8_1_5X8, V4L2_PIX_FMT_NV21, 1,
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{ { 1, 1 } }, { { 2, 3 } }, { 8 } },
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{ MEDIA_BUS_FMT_UYVY8_1_5X8, V4L2_PIX_FMT_NV21, 1,
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{ { 1, 1 } }, { { 2, 3 } }, { 8 } },
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{ MEDIA_BUS_FMT_VYUY8_1_5X8, V4L2_PIX_FMT_NV21, 1,
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{ { 1, 1 } }, { { 2, 3 } }, { 8 } },
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{ MEDIA_BUS_FMT_YUYV8_2X8, V4L2_PIX_FMT_NV16, 1,
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{ { 1, 1 } }, { { 1, 2 } }, { 8 } },
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{ MEDIA_BUS_FMT_YVYU8_2X8, V4L2_PIX_FMT_NV16, 1,
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{ { 1, 1 } }, { { 1, 2 } }, { 8 } },
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{ MEDIA_BUS_FMT_UYVY8_2X8, V4L2_PIX_FMT_NV16, 1,
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{ { 1, 1 } }, { { 1, 2 } }, { 8 } },
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{ MEDIA_BUS_FMT_VYUY8_2X8, V4L2_PIX_FMT_NV16, 1,
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{ { 1, 1 } }, { { 1, 2 } }, { 8 } },
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{ MEDIA_BUS_FMT_YUYV8_2X8, V4L2_PIX_FMT_NV61, 1,
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{ { 1, 1 } }, { { 1, 2 } }, { 8 } },
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{ MEDIA_BUS_FMT_YVYU8_2X8, V4L2_PIX_FMT_NV61, 1,
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{ { 1, 1 } }, { { 1, 2 } }, { 8 } },
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{ MEDIA_BUS_FMT_UYVY8_2X8, V4L2_PIX_FMT_NV61, 1,
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{ { 1, 1 } }, { { 1, 2 } }, { 8 } },
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{ MEDIA_BUS_FMT_VYUY8_2X8, V4L2_PIX_FMT_NV61, 1,
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{ { 1, 1 } }, { { 1, 2 } }, { 8 } },
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};
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static const struct camss_format_info formats_pix_8x96[] = {
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{ MEDIA_BUS_FMT_YUYV8_1_5X8, V4L2_PIX_FMT_NV12, 1,
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{ { 1, 1 } }, { { 2, 3 } }, { 8 } },
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{ MEDIA_BUS_FMT_YVYU8_1_5X8, V4L2_PIX_FMT_NV12, 1,
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{ { 1, 1 } }, { { 2, 3 } }, { 8 } },
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{ MEDIA_BUS_FMT_UYVY8_1_5X8, V4L2_PIX_FMT_NV12, 1,
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{ { 1, 1 } }, { { 2, 3 } }, { 8 } },
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{ MEDIA_BUS_FMT_VYUY8_1_5X8, V4L2_PIX_FMT_NV12, 1,
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{ { 1, 1 } }, { { 2, 3 } }, { 8 } },
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{ MEDIA_BUS_FMT_YUYV8_1_5X8, V4L2_PIX_FMT_NV21, 1,
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{ { 1, 1 } }, { { 2, 3 } }, { 8 } },
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{ MEDIA_BUS_FMT_YVYU8_1_5X8, V4L2_PIX_FMT_NV21, 1,
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{ { 1, 1 } }, { { 2, 3 } }, { 8 } },
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{ MEDIA_BUS_FMT_UYVY8_1_5X8, V4L2_PIX_FMT_NV21, 1,
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{ { 1, 1 } }, { { 2, 3 } }, { 8 } },
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{ MEDIA_BUS_FMT_VYUY8_1_5X8, V4L2_PIX_FMT_NV21, 1,
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{ { 1, 1 } }, { { 2, 3 } }, { 8 } },
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{ MEDIA_BUS_FMT_YUYV8_2X8, V4L2_PIX_FMT_NV16, 1,
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{ { 1, 1 } }, { { 1, 2 } }, { 8 } },
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{ MEDIA_BUS_FMT_YVYU8_2X8, V4L2_PIX_FMT_NV16, 1,
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{ { 1, 1 } }, { { 1, 2 } }, { 8 } },
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{ MEDIA_BUS_FMT_UYVY8_2X8, V4L2_PIX_FMT_NV16, 1,
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{ { 1, 1 } }, { { 1, 2 } }, { 8 } },
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{ MEDIA_BUS_FMT_VYUY8_2X8, V4L2_PIX_FMT_NV16, 1,
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{ { 1, 1 } }, { { 1, 2 } }, { 8 } },
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{ MEDIA_BUS_FMT_YUYV8_2X8, V4L2_PIX_FMT_NV61, 1,
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{ { 1, 1 } }, { { 1, 2 } }, { 8 } },
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{ MEDIA_BUS_FMT_YVYU8_2X8, V4L2_PIX_FMT_NV61, 1,
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{ { 1, 1 } }, { { 1, 2 } }, { 8 } },
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{ MEDIA_BUS_FMT_UYVY8_2X8, V4L2_PIX_FMT_NV61, 1,
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{ { 1, 1 } }, { { 1, 2 } }, { 8 } },
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{ MEDIA_BUS_FMT_VYUY8_2X8, V4L2_PIX_FMT_NV61, 1,
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{ { 1, 1 } }, { { 1, 2 } }, { 8 } },
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{ MEDIA_BUS_FMT_UYVY8_2X8, V4L2_PIX_FMT_UYVY, 1,
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{ { 1, 1 } }, { { 1, 1 } }, { 16 } },
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{ MEDIA_BUS_FMT_VYUY8_2X8, V4L2_PIX_FMT_VYUY, 1,
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{ { 1, 1 } }, { { 1, 1 } }, { 16 } },
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{ MEDIA_BUS_FMT_YUYV8_2X8, V4L2_PIX_FMT_YUYV, 1,
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{ { 1, 1 } }, { { 1, 1 } }, { 16 } },
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{ MEDIA_BUS_FMT_YVYU8_2X8, V4L2_PIX_FMT_YVYU, 1,
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{ { 1, 1 } }, { { 1, 1 } }, { 16 } },
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};
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/* -----------------------------------------------------------------------------
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* Helper functions
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*/
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static int video_find_format(u32 code, u32 pixelformat,
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const struct camss_format_info *formats,
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unsigned int nformats)
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{
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int i;
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for (i = 0; i < nformats; i++) {
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if (formats[i].code == code &&
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formats[i].pixelformat == pixelformat)
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return i;
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}
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for (i = 0; i < nformats; i++)
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if (formats[i].code == code)
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return i;
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WARN_ON(1);
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return -EINVAL;
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}
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/*
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* video_mbus_to_pix_mp - Convert v4l2_mbus_framefmt to v4l2_pix_format_mplane
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* @mbus: v4l2_mbus_framefmt format (input)
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* @pix: v4l2_pix_format_mplane format (output)
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* @f: a pointer to formats array element to be used for the conversion
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* @alignment: bytesperline alignment value
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*
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* Fill the output pix structure with information from the input mbus format.
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*
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* Return 0 on success or a negative error code otherwise
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|
|
*/
|
||
|
|
static int video_mbus_to_pix_mp(const struct v4l2_mbus_framefmt *mbus,
|
||
|
|
struct v4l2_pix_format_mplane *pix,
|
||
|
|
const struct camss_format_info *f,
|
||
|
|
unsigned int alignment)
|
||
|
|
{
|
||
|
|
unsigned int i;
|
||
|
|
u32 bytesperline;
|
||
|
|
|
||
|
|
memset(pix, 0, sizeof(*pix));
|
||
|
|
v4l2_fill_pix_format_mplane(pix, mbus);
|
||
|
|
pix->pixelformat = f->pixelformat;
|
||
|
|
pix->num_planes = f->planes;
|
||
|
|
for (i = 0; i < pix->num_planes; i++) {
|
||
|
|
bytesperline = pix->width / f->hsub[i].numerator *
|
||
|
|
f->hsub[i].denominator * f->bpp[i] / 8;
|
||
|
|
bytesperline = ALIGN(bytesperline, alignment);
|
||
|
|
pix->plane_fmt[i].bytesperline = bytesperline;
|
||
|
|
pix->plane_fmt[i].sizeimage = pix->height /
|
||
|
|
f->vsub[i].numerator * f->vsub[i].denominator *
|
||
|
|
bytesperline;
|
||
|
|
}
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static struct v4l2_subdev *video_remote_subdev(struct camss_video *video,
|
||
|
|
u32 *pad)
|
||
|
|
{
|
||
|
|
struct media_pad *remote;
|
||
|
|
|
||
|
|
remote = media_entity_remote_pad(&video->pad);
|
||
|
|
|
||
|
|
if (!remote || !is_media_entity_v4l2_subdev(remote->entity))
|
||
|
|
return NULL;
|
||
|
|
|
||
|
|
if (pad)
|
||
|
|
*pad = remote->index;
|
||
|
|
|
||
|
|
return media_entity_to_v4l2_subdev(remote->entity);
|
||
|
|
}
|
||
|
|
|
||
|
|
static int video_get_subdev_format(struct camss_video *video,
|
||
|
|
struct v4l2_format *format)
|
||
|
|
{
|
||
|
|
struct v4l2_subdev_format fmt;
|
||
|
|
struct v4l2_subdev *subdev;
|
||
|
|
u32 pad;
|
||
|
|
int ret;
|
||
|
|
|
||
|
|
subdev = video_remote_subdev(video, &pad);
|
||
|
|
if (subdev == NULL)
|
||
|
|
return -EPIPE;
|
||
|
|
|
||
|
|
fmt.pad = pad;
|
||
|
|
fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE;
|
||
|
|
|
||
|
|
ret = v4l2_subdev_call(subdev, pad, get_fmt, NULL, &fmt);
|
||
|
|
if (ret)
|
||
|
|
return ret;
|
||
|
|
|
||
|
|
ret = video_find_format(fmt.format.code,
|
||
|
|
format->fmt.pix_mp.pixelformat,
|
||
|
|
video->formats, video->nformats);
|
||
|
|
if (ret < 0)
|
||
|
|
return ret;
|
||
|
|
|
||
|
|
format->type = video->type;
|
||
|
|
|
||
|
|
return video_mbus_to_pix_mp(&fmt.format, &format->fmt.pix_mp,
|
||
|
|
&video->formats[ret], video->bpl_alignment);
|
||
|
|
}
|
||
|
|
|
||
|
|
/* -----------------------------------------------------------------------------
|
||
|
|
* Video queue operations
|
||
|
|
*/
|
||
|
|
|
||
|
|
static int video_queue_setup(struct vb2_queue *q,
|
||
|
|
unsigned int *num_buffers, unsigned int *num_planes,
|
||
|
|
unsigned int sizes[], struct device *alloc_devs[])
|
||
|
|
{
|
||
|
|
struct camss_video *video = vb2_get_drv_priv(q);
|
||
|
|
const struct v4l2_pix_format_mplane *format =
|
||
|
|
&video->active_fmt.fmt.pix_mp;
|
||
|
|
unsigned int i;
|
||
|
|
|
||
|
|
if (*num_planes) {
|
||
|
|
if (*num_planes != format->num_planes)
|
||
|
|
return -EINVAL;
|
||
|
|
|
||
|
|
for (i = 0; i < *num_planes; i++)
|
||
|
|
if (sizes[i] < format->plane_fmt[i].sizeimage)
|
||
|
|
return -EINVAL;
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
*num_planes = format->num_planes;
|
||
|
|
|
||
|
|
for (i = 0; i < *num_planes; i++)
|
||
|
|
sizes[i] = format->plane_fmt[i].sizeimage;
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int video_buf_init(struct vb2_buffer *vb)
|
||
|
|
{
|
||
|
|
struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
|
||
|
|
struct camss_video *video = vb2_get_drv_priv(vb->vb2_queue);
|
||
|
|
struct camss_buffer *buffer = container_of(vbuf, struct camss_buffer,
|
||
|
|
vb);
|
||
|
|
const struct v4l2_pix_format_mplane *format =
|
||
|
|
&video->active_fmt.fmt.pix_mp;
|
||
|
|
struct sg_table *sgt;
|
||
|
|
unsigned int i;
|
||
|
|
|
||
|
|
for (i = 0; i < format->num_planes; i++) {
|
||
|
|
sgt = vb2_dma_sg_plane_desc(vb, i);
|
||
|
|
if (!sgt)
|
||
|
|
return -EFAULT;
|
||
|
|
|
||
|
|
buffer->addr[i] = sg_dma_address(sgt->sgl);
|
||
|
|
}
|
||
|
|
|
||
|
|
if (format->pixelformat == V4L2_PIX_FMT_NV12 ||
|
||
|
|
format->pixelformat == V4L2_PIX_FMT_NV21 ||
|
||
|
|
format->pixelformat == V4L2_PIX_FMT_NV16 ||
|
||
|
|
format->pixelformat == V4L2_PIX_FMT_NV61)
|
||
|
|
buffer->addr[1] = buffer->addr[0] +
|
||
|
|
format->plane_fmt[0].bytesperline *
|
||
|
|
format->height;
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int video_buf_prepare(struct vb2_buffer *vb)
|
||
|
|
{
|
||
|
|
struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
|
||
|
|
struct camss_video *video = vb2_get_drv_priv(vb->vb2_queue);
|
||
|
|
const struct v4l2_pix_format_mplane *format =
|
||
|
|
&video->active_fmt.fmt.pix_mp;
|
||
|
|
unsigned int i;
|
||
|
|
|
||
|
|
for (i = 0; i < format->num_planes; i++) {
|
||
|
|
if (format->plane_fmt[i].sizeimage > vb2_plane_size(vb, i))
|
||
|
|
return -EINVAL;
|
||
|
|
|
||
|
|
vb2_set_plane_payload(vb, i, format->plane_fmt[i].sizeimage);
|
||
|
|
}
|
||
|
|
|
||
|
|
vbuf->field = V4L2_FIELD_NONE;
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static void video_buf_queue(struct vb2_buffer *vb)
|
||
|
|
{
|
||
|
|
struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
|
||
|
|
struct camss_video *video = vb2_get_drv_priv(vb->vb2_queue);
|
||
|
|
struct camss_buffer *buffer = container_of(vbuf, struct camss_buffer,
|
||
|
|
vb);
|
||
|
|
|
||
|
|
video->ops->queue_buffer(video, buffer);
|
||
|
|
}
|
||
|
|
|
||
|
|
static int video_check_format(struct camss_video *video)
|
||
|
|
{
|
||
|
|
struct v4l2_pix_format_mplane *pix = &video->active_fmt.fmt.pix_mp;
|
||
|
|
struct v4l2_format format;
|
||
|
|
struct v4l2_pix_format_mplane *sd_pix = &format.fmt.pix_mp;
|
||
|
|
int ret;
|
||
|
|
|
||
|
|
sd_pix->pixelformat = pix->pixelformat;
|
||
|
|
ret = video_get_subdev_format(video, &format);
|
||
|
|
if (ret < 0)
|
||
|
|
return ret;
|
||
|
|
|
||
|
|
if (pix->pixelformat != sd_pix->pixelformat ||
|
||
|
|
pix->height != sd_pix->height ||
|
||
|
|
pix->width != sd_pix->width ||
|
||
|
|
pix->num_planes != sd_pix->num_planes ||
|
||
|
|
pix->field != format.fmt.pix_mp.field)
|
||
|
|
return -EPIPE;
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int video_start_streaming(struct vb2_queue *q, unsigned int count)
|
||
|
|
{
|
||
|
|
struct camss_video *video = vb2_get_drv_priv(q);
|
||
|
|
struct video_device *vdev = &video->vdev;
|
||
|
|
struct media_entity *entity;
|
||
|
|
struct media_pad *pad;
|
||
|
|
struct v4l2_subdev *subdev;
|
||
|
|
int ret;
|
||
|
|
|
||
|
|
ret = media_pipeline_start(&vdev->entity, &video->pipe);
|
||
|
|
if (ret < 0)
|
||
|
|
return ret;
|
||
|
|
|
||
|
|
ret = video_check_format(video);
|
||
|
|
if (ret < 0)
|
||
|
|
goto error;
|
||
|
|
|
||
|
|
entity = &vdev->entity;
|
||
|
|
while (1) {
|
||
|
|
pad = &entity->pads[0];
|
||
|
|
if (!(pad->flags & MEDIA_PAD_FL_SINK))
|
||
|
|
break;
|
||
|
|
|
||
|
|
pad = media_entity_remote_pad(pad);
|
||
|
|
if (!pad || !is_media_entity_v4l2_subdev(pad->entity))
|
||
|
|
break;
|
||
|
|
|
||
|
|
entity = pad->entity;
|
||
|
|
subdev = media_entity_to_v4l2_subdev(entity);
|
||
|
|
|
||
|
|
ret = v4l2_subdev_call(subdev, video, s_stream, 1);
|
||
|
|
if (ret < 0 && ret != -ENOIOCTLCMD)
|
||
|
|
goto error;
|
||
|
|
}
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
|
||
|
|
error:
|
||
|
|
media_pipeline_stop(&vdev->entity);
|
||
|
|
|
||
|
|
video->ops->flush_buffers(video, VB2_BUF_STATE_QUEUED);
|
||
|
|
|
||
|
|
return ret;
|
||
|
|
}
|
||
|
|
|
||
|
|
static void video_stop_streaming(struct vb2_queue *q)
|
||
|
|
{
|
||
|
|
struct camss_video *video = vb2_get_drv_priv(q);
|
||
|
|
struct video_device *vdev = &video->vdev;
|
||
|
|
struct media_entity *entity;
|
||
|
|
struct media_pad *pad;
|
||
|
|
struct v4l2_subdev *subdev;
|
||
|
|
|
||
|
|
entity = &vdev->entity;
|
||
|
|
while (1) {
|
||
|
|
pad = &entity->pads[0];
|
||
|
|
if (!(pad->flags & MEDIA_PAD_FL_SINK))
|
||
|
|
break;
|
||
|
|
|
||
|
|
pad = media_entity_remote_pad(pad);
|
||
|
|
if (!pad || !is_media_entity_v4l2_subdev(pad->entity))
|
||
|
|
break;
|
||
|
|
|
||
|
|
entity = pad->entity;
|
||
|
|
subdev = media_entity_to_v4l2_subdev(entity);
|
||
|
|
|
||
|
|
v4l2_subdev_call(subdev, video, s_stream, 0);
|
||
|
|
}
|
||
|
|
|
||
|
|
media_pipeline_stop(&vdev->entity);
|
||
|
|
|
||
|
|
video->ops->flush_buffers(video, VB2_BUF_STATE_ERROR);
|
||
|
|
}
|
||
|
|
|
||
|
|
static const struct vb2_ops msm_video_vb2_q_ops = {
|
||
|
|
.queue_setup = video_queue_setup,
|
||
|
|
.wait_prepare = vb2_ops_wait_prepare,
|
||
|
|
.wait_finish = vb2_ops_wait_finish,
|
||
|
|
.buf_init = video_buf_init,
|
||
|
|
.buf_prepare = video_buf_prepare,
|
||
|
|
.buf_queue = video_buf_queue,
|
||
|
|
.start_streaming = video_start_streaming,
|
||
|
|
.stop_streaming = video_stop_streaming,
|
||
|
|
};
|
||
|
|
|
||
|
|
/* -----------------------------------------------------------------------------
|
||
|
|
* V4L2 ioctls
|
||
|
|
*/
|
||
|
|
|
||
|
|
static int video_querycap(struct file *file, void *fh,
|
||
|
|
struct v4l2_capability *cap)
|
||
|
|
{
|
||
|
|
struct camss_video *video = video_drvdata(file);
|
||
|
|
|
||
|
|
strscpy(cap->driver, "qcom-camss", sizeof(cap->driver));
|
||
|
|
strscpy(cap->card, "Qualcomm Camera Subsystem", sizeof(cap->card));
|
||
|
|
snprintf(cap->bus_info, sizeof(cap->bus_info), "platform:%s",
|
||
|
|
dev_name(video->camss->dev));
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int video_enum_fmt(struct file *file, void *fh, struct v4l2_fmtdesc *f)
|
||
|
|
{
|
||
|
|
struct camss_video *video = video_drvdata(file);
|
||
|
|
int i, j, k;
|
||
|
|
|
||
|
|
if (f->type != video->type)
|
||
|
|
return -EINVAL;
|
||
|
|
|
||
|
|
if (f->index >= video->nformats)
|
||
|
|
return -EINVAL;
|
||
|
|
|
||
|
|
/* find index "i" of "k"th unique pixelformat in formats array */
|
||
|
|
k = -1;
|
||
|
|
for (i = 0; i < video->nformats; i++) {
|
||
|
|
for (j = 0; j < i; j++) {
|
||
|
|
if (video->formats[i].pixelformat ==
|
||
|
|
video->formats[j].pixelformat)
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (j == i)
|
||
|
|
k++;
|
||
|
|
|
||
|
|
if (k == f->index)
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (k < f->index)
|
||
|
|
return -EINVAL;
|
||
|
|
|
||
|
|
f->pixelformat = video->formats[i].pixelformat;
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int video_g_fmt(struct file *file, void *fh, struct v4l2_format *f)
|
||
|
|
{
|
||
|
|
struct camss_video *video = video_drvdata(file);
|
||
|
|
|
||
|
|
*f = video->active_fmt;
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int __video_try_fmt(struct camss_video *video, struct v4l2_format *f)
|
||
|
|
{
|
||
|
|
struct v4l2_pix_format_mplane *pix_mp;
|
||
|
|
const struct camss_format_info *fi;
|
||
|
|
struct v4l2_plane_pix_format *p;
|
||
|
|
u32 bytesperline[3] = { 0 };
|
||
|
|
u32 sizeimage[3] = { 0 };
|
||
|
|
u32 width, height;
|
||
|
|
u32 bpl, lines;
|
||
|
|
int i, j;
|
||
|
|
|
||
|
|
pix_mp = &f->fmt.pix_mp;
|
||
|
|
|
||
|
|
if (video->line_based)
|
||
|
|
for (i = 0; i < pix_mp->num_planes && i < 3; i++) {
|
||
|
|
p = &pix_mp->plane_fmt[i];
|
||
|
|
bytesperline[i] = clamp_t(u32, p->bytesperline,
|
||
|
|
1, 65528);
|
||
|
|
sizeimage[i] = clamp_t(u32, p->sizeimage,
|
||
|
|
bytesperline[i],
|
||
|
|
bytesperline[i] * 4096);
|
||
|
|
}
|
||
|
|
|
||
|
|
for (j = 0; j < video->nformats; j++)
|
||
|
|
if (pix_mp->pixelformat == video->formats[j].pixelformat)
|
||
|
|
break;
|
||
|
|
|
||
|
|
if (j == video->nformats)
|
||
|
|
j = 0; /* default format */
|
||
|
|
|
||
|
|
fi = &video->formats[j];
|
||
|
|
width = pix_mp->width;
|
||
|
|
height = pix_mp->height;
|
||
|
|
|
||
|
|
memset(pix_mp, 0, sizeof(*pix_mp));
|
||
|
|
|
||
|
|
pix_mp->pixelformat = fi->pixelformat;
|
||
|
|
pix_mp->width = clamp_t(u32, width, 1, 8191);
|
||
|
|
pix_mp->height = clamp_t(u32, height, 1, 8191);
|
||
|
|
pix_mp->num_planes = fi->planes;
|
||
|
|
for (i = 0; i < pix_mp->num_planes; i++) {
|
||
|
|
bpl = pix_mp->width / fi->hsub[i].numerator *
|
||
|
|
fi->hsub[i].denominator * fi->bpp[i] / 8;
|
||
|
|
bpl = ALIGN(bpl, video->bpl_alignment);
|
||
|
|
pix_mp->plane_fmt[i].bytesperline = bpl;
|
||
|
|
pix_mp->plane_fmt[i].sizeimage = pix_mp->height /
|
||
|
|
fi->vsub[i].numerator * fi->vsub[i].denominator * bpl;
|
||
|
|
}
|
||
|
|
|
||
|
|
pix_mp->field = V4L2_FIELD_NONE;
|
||
|
|
pix_mp->colorspace = V4L2_COLORSPACE_SRGB;
|
||
|
|
pix_mp->flags = 0;
|
||
|
|
pix_mp->ycbcr_enc = V4L2_MAP_YCBCR_ENC_DEFAULT(pix_mp->colorspace);
|
||
|
|
pix_mp->quantization = V4L2_MAP_QUANTIZATION_DEFAULT(true,
|
||
|
|
pix_mp->colorspace, pix_mp->ycbcr_enc);
|
||
|
|
pix_mp->xfer_func = V4L2_MAP_XFER_FUNC_DEFAULT(pix_mp->colorspace);
|
||
|
|
|
||
|
|
if (video->line_based)
|
||
|
|
for (i = 0; i < pix_mp->num_planes; i++) {
|
||
|
|
p = &pix_mp->plane_fmt[i];
|
||
|
|
p->bytesperline = clamp_t(u32, p->bytesperline,
|
||
|
|
1, 65528);
|
||
|
|
p->sizeimage = clamp_t(u32, p->sizeimage,
|
||
|
|
p->bytesperline,
|
||
|
|
p->bytesperline * 4096);
|
||
|
|
lines = p->sizeimage / p->bytesperline;
|
||
|
|
|
||
|
|
if (p->bytesperline < bytesperline[i])
|
||
|
|
p->bytesperline = ALIGN(bytesperline[i], 8);
|
||
|
|
|
||
|
|
if (p->sizeimage < p->bytesperline * lines)
|
||
|
|
p->sizeimage = p->bytesperline * lines;
|
||
|
|
|
||
|
|
if (p->sizeimage < sizeimage[i])
|
||
|
|
p->sizeimage = sizeimage[i];
|
||
|
|
}
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int video_try_fmt(struct file *file, void *fh, struct v4l2_format *f)
|
||
|
|
{
|
||
|
|
struct camss_video *video = video_drvdata(file);
|
||
|
|
|
||
|
|
return __video_try_fmt(video, f);
|
||
|
|
}
|
||
|
|
|
||
|
|
static int video_s_fmt(struct file *file, void *fh, struct v4l2_format *f)
|
||
|
|
{
|
||
|
|
struct camss_video *video = video_drvdata(file);
|
||
|
|
int ret;
|
||
|
|
|
||
|
|
if (vb2_is_busy(&video->vb2_q))
|
||
|
|
return -EBUSY;
|
||
|
|
|
||
|
|
ret = __video_try_fmt(video, f);
|
||
|
|
if (ret < 0)
|
||
|
|
return ret;
|
||
|
|
|
||
|
|
video->active_fmt = *f;
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int 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 video_g_input(struct file *file, void *fh, unsigned int *input)
|
||
|
|
{
|
||
|
|
*input = 0;
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int video_s_input(struct file *file, void *fh, unsigned int input)
|
||
|
|
{
|
||
|
|
return input == 0 ? 0 : -EINVAL;
|
||
|
|
}
|
||
|
|
|
||
|
|
static const struct v4l2_ioctl_ops msm_vid_ioctl_ops = {
|
||
|
|
.vidioc_querycap = video_querycap,
|
||
|
|
.vidioc_enum_fmt_vid_cap = video_enum_fmt,
|
||
|
|
.vidioc_g_fmt_vid_cap_mplane = video_g_fmt,
|
||
|
|
.vidioc_s_fmt_vid_cap_mplane = video_s_fmt,
|
||
|
|
.vidioc_try_fmt_vid_cap_mplane = video_try_fmt,
|
||
|
|
.vidioc_reqbufs = vb2_ioctl_reqbufs,
|
||
|
|
.vidioc_querybuf = vb2_ioctl_querybuf,
|
||
|
|
.vidioc_qbuf = vb2_ioctl_qbuf,
|
||
|
|
.vidioc_expbuf = vb2_ioctl_expbuf,
|
||
|
|
.vidioc_dqbuf = vb2_ioctl_dqbuf,
|
||
|
|
.vidioc_create_bufs = vb2_ioctl_create_bufs,
|
||
|
|
.vidioc_prepare_buf = vb2_ioctl_prepare_buf,
|
||
|
|
.vidioc_streamon = vb2_ioctl_streamon,
|
||
|
|
.vidioc_streamoff = vb2_ioctl_streamoff,
|
||
|
|
.vidioc_enum_input = video_enum_input,
|
||
|
|
.vidioc_g_input = video_g_input,
|
||
|
|
.vidioc_s_input = video_s_input,
|
||
|
|
};
|
||
|
|
|
||
|
|
/* -----------------------------------------------------------------------------
|
||
|
|
* V4L2 file operations
|
||
|
|
*/
|
||
|
|
|
||
|
|
static int video_open(struct file *file)
|
||
|
|
{
|
||
|
|
struct video_device *vdev = video_devdata(file);
|
||
|
|
struct camss_video *video = video_drvdata(file);
|
||
|
|
struct v4l2_fh *vfh;
|
||
|
|
int ret;
|
||
|
|
|
||
|
|
mutex_lock(&video->lock);
|
||
|
|
|
||
|
|
vfh = kzalloc(sizeof(*vfh), GFP_KERNEL);
|
||
|
|
if (vfh == NULL) {
|
||
|
|
ret = -ENOMEM;
|
||
|
|
goto error_alloc;
|
||
|
|
}
|
||
|
|
|
||
|
|
v4l2_fh_init(vfh, vdev);
|
||
|
|
v4l2_fh_add(vfh);
|
||
|
|
|
||
|
|
file->private_data = vfh;
|
||
|
|
|
||
|
|
ret = v4l2_pipeline_pm_use(&vdev->entity, 1);
|
||
|
|
if (ret < 0) {
|
||
|
|
dev_err(video->camss->dev, "Failed to power up pipeline: %d\n",
|
||
|
|
ret);
|
||
|
|
goto error_pm_use;
|
||
|
|
}
|
||
|
|
|
||
|
|
mutex_unlock(&video->lock);
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
|
||
|
|
error_pm_use:
|
||
|
|
v4l2_fh_release(file);
|
||
|
|
|
||
|
|
error_alloc:
|
||
|
|
mutex_unlock(&video->lock);
|
||
|
|
|
||
|
|
return ret;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int video_release(struct file *file)
|
||
|
|
{
|
||
|
|
struct video_device *vdev = video_devdata(file);
|
||
|
|
|
||
|
|
vb2_fop_release(file);
|
||
|
|
|
||
|
|
v4l2_pipeline_pm_use(&vdev->entity, 0);
|
||
|
|
|
||
|
|
file->private_data = NULL;
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static const struct v4l2_file_operations msm_vid_fops = {
|
||
|
|
.owner = THIS_MODULE,
|
||
|
|
.unlocked_ioctl = video_ioctl2,
|
||
|
|
.open = video_open,
|
||
|
|
.release = video_release,
|
||
|
|
.poll = vb2_fop_poll,
|
||
|
|
.mmap = vb2_fop_mmap,
|
||
|
|
.read = vb2_fop_read,
|
||
|
|
};
|
||
|
|
|
||
|
|
/* -----------------------------------------------------------------------------
|
||
|
|
* CAMSS video core
|
||
|
|
*/
|
||
|
|
|
||
|
|
static void msm_video_release(struct video_device *vdev)
|
||
|
|
{
|
||
|
|
struct camss_video *video = video_get_drvdata(vdev);
|
||
|
|
|
||
|
|
media_entity_cleanup(&vdev->entity);
|
||
|
|
|
||
|
|
mutex_destroy(&video->q_lock);
|
||
|
|
mutex_destroy(&video->lock);
|
||
|
|
|
||
|
|
if (atomic_dec_and_test(&video->camss->ref_count))
|
||
|
|
camss_delete(video->camss);
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* msm_video_init_format - Helper function to initialize format
|
||
|
|
* @video: struct camss_video
|
||
|
|
*
|
||
|
|
* Initialize pad format with default value.
|
||
|
|
*
|
||
|
|
* Return 0 on success or a negative error code otherwise
|
||
|
|
*/
|
||
|
|
static int msm_video_init_format(struct camss_video *video)
|
||
|
|
{
|
||
|
|
int ret;
|
||
|
|
struct v4l2_format format = {
|
||
|
|
.type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE,
|
||
|
|
.fmt.pix_mp = {
|
||
|
|
.width = 1920,
|
||
|
|
.height = 1080,
|
||
|
|
.pixelformat = video->formats[0].pixelformat,
|
||
|
|
},
|
||
|
|
};
|
||
|
|
|
||
|
|
ret = __video_try_fmt(video, &format);
|
||
|
|
if (ret < 0)
|
||
|
|
return ret;
|
||
|
|
|
||
|
|
video->active_fmt = format;
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* msm_video_register - Register a video device node
|
||
|
|
* @video: struct camss_video
|
||
|
|
* @v4l2_dev: V4L2 device
|
||
|
|
* @name: name to be used for the video device node
|
||
|
|
*
|
||
|
|
* Initialize and register a video device node to a V4L2 device. Also
|
||
|
|
* initialize the vb2 queue.
|
||
|
|
*
|
||
|
|
* Return 0 on success or a negative error code otherwise
|
||
|
|
*/
|
||
|
|
|
||
|
|
int msm_video_register(struct camss_video *video, struct v4l2_device *v4l2_dev,
|
||
|
|
const char *name, int is_pix)
|
||
|
|
{
|
||
|
|
struct media_pad *pad = &video->pad;
|
||
|
|
struct video_device *vdev;
|
||
|
|
struct vb2_queue *q;
|
||
|
|
int ret;
|
||
|
|
|
||
|
|
vdev = &video->vdev;
|
||
|
|
|
||
|
|
mutex_init(&video->q_lock);
|
||
|
|
|
||
|
|
q = &video->vb2_q;
|
||
|
|
q->drv_priv = video;
|
||
|
|
q->mem_ops = &vb2_dma_sg_memops;
|
||
|
|
q->ops = &msm_video_vb2_q_ops;
|
||
|
|
q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
|
||
|
|
q->io_modes = VB2_DMABUF | VB2_MMAP | VB2_READ;
|
||
|
|
q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
|
||
|
|
q->buf_struct_size = sizeof(struct camss_buffer);
|
||
|
|
q->dev = video->camss->dev;
|
||
|
|
q->lock = &video->q_lock;
|
||
|
|
ret = vb2_queue_init(q);
|
||
|
|
if (ret < 0) {
|
||
|
|
dev_err(v4l2_dev->dev, "Failed to init vb2 queue: %d\n", ret);
|
||
|
|
goto error_vb2_init;
|
||
|
|
}
|
||
|
|
|
||
|
|
pad->flags = MEDIA_PAD_FL_SINK;
|
||
|
|
ret = media_entity_pads_init(&vdev->entity, 1, pad);
|
||
|
|
if (ret < 0) {
|
||
|
|
dev_err(v4l2_dev->dev, "Failed to init video entity: %d\n",
|
||
|
|
ret);
|
||
|
|
goto error_media_init;
|
||
|
|
}
|
||
|
|
|
||
|
|
mutex_init(&video->lock);
|
||
|
|
|
||
|
|
if (video->camss->version == CAMSS_8x16) {
|
||
|
|
if (is_pix) {
|
||
|
|
video->formats = formats_pix_8x16;
|
||
|
|
video->nformats = ARRAY_SIZE(formats_pix_8x16);
|
||
|
|
} else {
|
||
|
|
video->formats = formats_rdi_8x16;
|
||
|
|
video->nformats = ARRAY_SIZE(formats_rdi_8x16);
|
||
|
|
}
|
||
|
|
} else if (video->camss->version == CAMSS_8x96) {
|
||
|
|
if (is_pix) {
|
||
|
|
video->formats = formats_pix_8x96;
|
||
|
|
video->nformats = ARRAY_SIZE(formats_pix_8x96);
|
||
|
|
} else {
|
||
|
|
video->formats = formats_rdi_8x96;
|
||
|
|
video->nformats = ARRAY_SIZE(formats_rdi_8x96);
|
||
|
|
}
|
||
|
|
} else {
|
||
|
|
goto error_video_register;
|
||
|
|
}
|
||
|
|
|
||
|
|
ret = msm_video_init_format(video);
|
||
|
|
if (ret < 0) {
|
||
|
|
dev_err(v4l2_dev->dev, "Failed to init format: %d\n", ret);
|
||
|
|
goto error_video_register;
|
||
|
|
}
|
||
|
|
|
||
|
|
vdev->fops = &msm_vid_fops;
|
||
|
|
vdev->device_caps = V4L2_CAP_VIDEO_CAPTURE_MPLANE | V4L2_CAP_STREAMING |
|
||
|
|
V4L2_CAP_READWRITE;
|
||
|
|
vdev->ioctl_ops = &msm_vid_ioctl_ops;
|
||
|
|
vdev->release = msm_video_release;
|
||
|
|
vdev->v4l2_dev = v4l2_dev;
|
||
|
|
vdev->vfl_dir = VFL_DIR_RX;
|
||
|
|
vdev->queue = &video->vb2_q;
|
||
|
|
vdev->lock = &video->lock;
|
||
|
|
strscpy(vdev->name, name, sizeof(vdev->name));
|
||
|
|
|
||
|
|
ret = video_register_device(vdev, VFL_TYPE_GRABBER, -1);
|
||
|
|
if (ret < 0) {
|
||
|
|
dev_err(v4l2_dev->dev, "Failed to register video device: %d\n",
|
||
|
|
ret);
|
||
|
|
goto error_video_register;
|
||
|
|
}
|
||
|
|
|
||
|
|
video_set_drvdata(vdev, video);
|
||
|
|
atomic_inc(&video->camss->ref_count);
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
|
||
|
|
error_video_register:
|
||
|
|
media_entity_cleanup(&vdev->entity);
|
||
|
|
mutex_destroy(&video->lock);
|
||
|
|
error_media_init:
|
||
|
|
vb2_queue_release(&video->vb2_q);
|
||
|
|
error_vb2_init:
|
||
|
|
mutex_destroy(&video->q_lock);
|
||
|
|
|
||
|
|
return ret;
|
||
|
|
}
|
||
|
|
|
||
|
|
void msm_video_stop_streaming(struct camss_video *video)
|
||
|
|
{
|
||
|
|
if (vb2_is_streaming(&video->vb2_q))
|
||
|
|
vb2_queue_release(&video->vb2_q);
|
||
|
|
}
|
||
|
|
|
||
|
|
void msm_video_unregister(struct camss_video *video)
|
||
|
|
{
|
||
|
|
atomic_inc(&video->camss->ref_count);
|
||
|
|
video_unregister_device(&video->vdev);
|
||
|
|
atomic_dec(&video->camss->ref_count);
|
||
|
|
}
|