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![Mauro Carvalho Chehab](/assets/img/avatar_default.png)
The logic at find_format() is a little bit confusing even for humans, and it tricks static code analyzers: drivers/staging/media/imx/imx-media-utils.c:259 find_format() error: buffer overflow 'array' 14 <= 20 Rewrite the logic in a way that it makes it clearer to understand, while prevent static analyzers to produce false positives. Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
922 lines
22 KiB
C
922 lines
22 KiB
C
/*
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* V4L2 Media Controller Driver for Freescale i.MX5/6 SOC
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*
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* Copyright (c) 2016 Mentor Graphics Inc.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*/
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#include <linux/module.h>
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#include "imx-media.h"
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/*
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* List of supported pixel formats for the subdevs.
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*
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* In all of these tables, the non-mbus formats (with no
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* mbus codes) must all fall at the end of the table.
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*/
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static const struct imx_media_pixfmt yuv_formats[] = {
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{
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.fourcc = V4L2_PIX_FMT_UYVY,
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.codes = {
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MEDIA_BUS_FMT_UYVY8_2X8,
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MEDIA_BUS_FMT_UYVY8_1X16
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},
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.cs = IPUV3_COLORSPACE_YUV,
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.bpp = 16,
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}, {
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.fourcc = V4L2_PIX_FMT_YUYV,
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.codes = {
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MEDIA_BUS_FMT_YUYV8_2X8,
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MEDIA_BUS_FMT_YUYV8_1X16
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},
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.cs = IPUV3_COLORSPACE_YUV,
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.bpp = 16,
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},
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/***
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* non-mbus YUV formats start here. NOTE! when adding non-mbus
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* formats, NUM_NON_MBUS_YUV_FORMATS must be updated below.
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***/
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{
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.fourcc = V4L2_PIX_FMT_YUV420,
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.cs = IPUV3_COLORSPACE_YUV,
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.bpp = 12,
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.planar = true,
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}, {
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.fourcc = V4L2_PIX_FMT_YVU420,
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.cs = IPUV3_COLORSPACE_YUV,
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.bpp = 12,
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.planar = true,
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}, {
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.fourcc = V4L2_PIX_FMT_YUV422P,
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.cs = IPUV3_COLORSPACE_YUV,
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.bpp = 16,
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.planar = true,
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}, {
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.fourcc = V4L2_PIX_FMT_NV12,
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.cs = IPUV3_COLORSPACE_YUV,
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.bpp = 12,
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.planar = true,
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}, {
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.fourcc = V4L2_PIX_FMT_NV16,
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.cs = IPUV3_COLORSPACE_YUV,
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.bpp = 16,
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.planar = true,
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},
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};
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#define NUM_NON_MBUS_YUV_FORMATS 5
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#define NUM_YUV_FORMATS ARRAY_SIZE(yuv_formats)
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#define NUM_MBUS_YUV_FORMATS (NUM_YUV_FORMATS - NUM_NON_MBUS_YUV_FORMATS)
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static const struct imx_media_pixfmt rgb_formats[] = {
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{
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.fourcc = V4L2_PIX_FMT_RGB565,
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.codes = {MEDIA_BUS_FMT_RGB565_2X8_LE},
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.cs = IPUV3_COLORSPACE_RGB,
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.bpp = 16,
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}, {
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.fourcc = V4L2_PIX_FMT_RGB24,
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.codes = {
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MEDIA_BUS_FMT_RGB888_1X24,
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MEDIA_BUS_FMT_RGB888_2X12_LE
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},
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.cs = IPUV3_COLORSPACE_RGB,
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.bpp = 24,
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}, {
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.fourcc = V4L2_PIX_FMT_RGB32,
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.codes = {MEDIA_BUS_FMT_ARGB8888_1X32},
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.cs = IPUV3_COLORSPACE_RGB,
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.bpp = 32,
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.ipufmt = true,
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},
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/*** raw bayer and grayscale formats start here ***/
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{
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.fourcc = V4L2_PIX_FMT_SBGGR8,
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.codes = {MEDIA_BUS_FMT_SBGGR8_1X8},
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.cs = IPUV3_COLORSPACE_RGB,
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.bpp = 8,
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.bayer = true,
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}, {
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.fourcc = V4L2_PIX_FMT_SGBRG8,
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.codes = {MEDIA_BUS_FMT_SGBRG8_1X8},
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.cs = IPUV3_COLORSPACE_RGB,
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.bpp = 8,
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.bayer = true,
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}, {
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.fourcc = V4L2_PIX_FMT_SGRBG8,
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.codes = {MEDIA_BUS_FMT_SGRBG8_1X8},
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.cs = IPUV3_COLORSPACE_RGB,
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.bpp = 8,
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.bayer = true,
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}, {
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.fourcc = V4L2_PIX_FMT_SRGGB8,
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.codes = {MEDIA_BUS_FMT_SRGGB8_1X8},
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.cs = IPUV3_COLORSPACE_RGB,
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.bpp = 8,
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.bayer = true,
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}, {
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.fourcc = V4L2_PIX_FMT_SBGGR16,
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.codes = {
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MEDIA_BUS_FMT_SBGGR10_1X10,
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MEDIA_BUS_FMT_SBGGR12_1X12,
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MEDIA_BUS_FMT_SBGGR14_1X14,
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MEDIA_BUS_FMT_SBGGR16_1X16
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},
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.cs = IPUV3_COLORSPACE_RGB,
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.bpp = 16,
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.bayer = true,
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}, {
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.fourcc = V4L2_PIX_FMT_SGBRG16,
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.codes = {
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MEDIA_BUS_FMT_SGBRG10_1X10,
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MEDIA_BUS_FMT_SGBRG12_1X12,
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MEDIA_BUS_FMT_SGBRG14_1X14,
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MEDIA_BUS_FMT_SGBRG16_1X16,
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},
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.cs = IPUV3_COLORSPACE_RGB,
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.bpp = 16,
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.bayer = true,
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}, {
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.fourcc = V4L2_PIX_FMT_SGRBG16,
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.codes = {
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MEDIA_BUS_FMT_SGRBG10_1X10,
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MEDIA_BUS_FMT_SGRBG12_1X12,
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MEDIA_BUS_FMT_SGRBG14_1X14,
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MEDIA_BUS_FMT_SGRBG16_1X16,
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},
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.cs = IPUV3_COLORSPACE_RGB,
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.bpp = 16,
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.bayer = true,
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}, {
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.fourcc = V4L2_PIX_FMT_SRGGB16,
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.codes = {
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MEDIA_BUS_FMT_SRGGB10_1X10,
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MEDIA_BUS_FMT_SRGGB12_1X12,
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MEDIA_BUS_FMT_SRGGB14_1X14,
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MEDIA_BUS_FMT_SRGGB16_1X16,
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},
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.cs = IPUV3_COLORSPACE_RGB,
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.bpp = 16,
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.bayer = true,
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}, {
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.fourcc = V4L2_PIX_FMT_GREY,
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.codes = {MEDIA_BUS_FMT_Y8_1X8},
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.cs = IPUV3_COLORSPACE_RGB,
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.bpp = 8,
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.bayer = true,
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},
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/***
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* non-mbus RGB formats start here. NOTE! when adding non-mbus
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* formats, NUM_NON_MBUS_RGB_FORMATS must be updated below.
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***/
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{
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.fourcc = V4L2_PIX_FMT_BGR24,
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.cs = IPUV3_COLORSPACE_RGB,
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.bpp = 24,
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}, {
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.fourcc = V4L2_PIX_FMT_BGR32,
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.cs = IPUV3_COLORSPACE_RGB,
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.bpp = 32,
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},
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};
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#define NUM_NON_MBUS_RGB_FORMATS 2
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#define NUM_RGB_FORMATS ARRAY_SIZE(rgb_formats)
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#define NUM_MBUS_RGB_FORMATS (NUM_RGB_FORMATS - NUM_NON_MBUS_RGB_FORMATS)
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static const struct imx_media_pixfmt ipu_yuv_formats[] = {
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{
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.fourcc = V4L2_PIX_FMT_YUV32,
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.codes = {MEDIA_BUS_FMT_AYUV8_1X32},
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.cs = IPUV3_COLORSPACE_YUV,
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.bpp = 32,
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.ipufmt = true,
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},
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};
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#define NUM_IPU_YUV_FORMATS ARRAY_SIZE(ipu_yuv_formats)
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static const struct imx_media_pixfmt ipu_rgb_formats[] = {
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{
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.fourcc = V4L2_PIX_FMT_RGB32,
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.codes = {MEDIA_BUS_FMT_ARGB8888_1X32},
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.cs = IPUV3_COLORSPACE_RGB,
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.bpp = 32,
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.ipufmt = true,
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},
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};
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#define NUM_IPU_RGB_FORMATS ARRAY_SIZE(ipu_rgb_formats)
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static void init_mbus_colorimetry(struct v4l2_mbus_framefmt *mbus,
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const struct imx_media_pixfmt *fmt)
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{
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mbus->colorspace = (fmt->cs == IPUV3_COLORSPACE_RGB) ?
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V4L2_COLORSPACE_SRGB : V4L2_COLORSPACE_SMPTE170M;
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mbus->xfer_func = V4L2_MAP_XFER_FUNC_DEFAULT(mbus->colorspace);
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mbus->ycbcr_enc = V4L2_MAP_YCBCR_ENC_DEFAULT(mbus->colorspace);
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mbus->quantization =
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V4L2_MAP_QUANTIZATION_DEFAULT(fmt->cs == IPUV3_COLORSPACE_RGB,
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mbus->colorspace,
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mbus->ycbcr_enc);
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}
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static const
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struct imx_media_pixfmt *__find_format(u32 fourcc,
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u32 code,
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bool allow_non_mbus,
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bool allow_bayer,
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const struct imx_media_pixfmt *array,
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u32 array_size)
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{
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const struct imx_media_pixfmt *fmt;
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int i, j;
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for (i = 0; i < array_size; i++) {
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fmt = &array[i];
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if ((!allow_non_mbus && !fmt->codes[0]) ||
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(!allow_bayer && fmt->bayer))
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continue;
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if (fourcc && fmt->fourcc == fourcc)
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return fmt;
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if (!code)
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continue;
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for (j = 0; fmt->codes[j]; j++) {
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if (code == fmt->codes[j])
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return fmt;
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}
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}
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return NULL;
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}
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static const struct imx_media_pixfmt *find_format(u32 fourcc,
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u32 code,
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enum codespace_sel cs_sel,
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bool allow_non_mbus,
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bool allow_bayer)
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{
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const struct imx_media_pixfmt *ret;
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switch (cs_sel) {
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case CS_SEL_YUV:
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return __find_format(fourcc, code, allow_non_mbus, allow_bayer,
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yuv_formats, NUM_YUV_FORMATS);
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case CS_SEL_RGB:
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return __find_format(fourcc, code, allow_non_mbus, allow_bayer,
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rgb_formats, NUM_RGB_FORMATS);
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case CS_SEL_ANY:
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ret = __find_format(fourcc, code, allow_non_mbus, allow_bayer,
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yuv_formats, NUM_YUV_FORMATS);
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if (ret)
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return ret;
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return __find_format(fourcc, code, allow_non_mbus, allow_bayer,
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rgb_formats, NUM_RGB_FORMATS);
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default:
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return NULL;
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}
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}
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static int enum_format(u32 *fourcc, u32 *code, u32 index,
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enum codespace_sel cs_sel,
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bool allow_non_mbus,
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bool allow_bayer)
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{
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const struct imx_media_pixfmt *fmt;
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u32 mbus_yuv_sz = NUM_MBUS_YUV_FORMATS;
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u32 mbus_rgb_sz = NUM_MBUS_RGB_FORMATS;
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u32 yuv_sz = NUM_YUV_FORMATS;
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u32 rgb_sz = NUM_RGB_FORMATS;
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switch (cs_sel) {
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case CS_SEL_YUV:
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if (index >= yuv_sz ||
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(!allow_non_mbus && index >= mbus_yuv_sz))
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return -EINVAL;
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fmt = &yuv_formats[index];
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break;
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case CS_SEL_RGB:
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if (index >= rgb_sz ||
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(!allow_non_mbus && index >= mbus_rgb_sz))
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return -EINVAL;
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fmt = &rgb_formats[index];
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if (!allow_bayer && fmt->bayer)
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return -EINVAL;
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break;
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case CS_SEL_ANY:
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if (!allow_non_mbus) {
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if (index >= mbus_yuv_sz) {
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index -= mbus_yuv_sz;
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if (index >= mbus_rgb_sz)
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return -EINVAL;
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fmt = &rgb_formats[index];
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if (!allow_bayer && fmt->bayer)
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return -EINVAL;
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} else {
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fmt = &yuv_formats[index];
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}
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} else {
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if (index >= yuv_sz + rgb_sz)
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return -EINVAL;
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if (index >= yuv_sz) {
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fmt = &rgb_formats[index - yuv_sz];
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if (!allow_bayer && fmt->bayer)
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return -EINVAL;
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} else {
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fmt = &yuv_formats[index];
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}
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}
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break;
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default:
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return -EINVAL;
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}
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if (fourcc)
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*fourcc = fmt->fourcc;
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if (code)
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*code = fmt->codes[0];
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return 0;
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}
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const struct imx_media_pixfmt *
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imx_media_find_format(u32 fourcc, enum codespace_sel cs_sel, bool allow_bayer)
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{
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return find_format(fourcc, 0, cs_sel, true, allow_bayer);
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}
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EXPORT_SYMBOL_GPL(imx_media_find_format);
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int imx_media_enum_format(u32 *fourcc, u32 index, enum codespace_sel cs_sel)
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{
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return enum_format(fourcc, NULL, index, cs_sel, true, false);
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}
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EXPORT_SYMBOL_GPL(imx_media_enum_format);
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const struct imx_media_pixfmt *
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imx_media_find_mbus_format(u32 code, enum codespace_sel cs_sel,
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bool allow_bayer)
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{
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return find_format(0, code, cs_sel, false, allow_bayer);
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}
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EXPORT_SYMBOL_GPL(imx_media_find_mbus_format);
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int imx_media_enum_mbus_format(u32 *code, u32 index, enum codespace_sel cs_sel,
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bool allow_bayer)
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{
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return enum_format(NULL, code, index, cs_sel, false, allow_bayer);
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}
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EXPORT_SYMBOL_GPL(imx_media_enum_mbus_format);
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const struct imx_media_pixfmt *
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imx_media_find_ipu_format(u32 code, enum codespace_sel cs_sel)
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{
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const struct imx_media_pixfmt *array, *fmt, *ret = NULL;
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u32 array_size;
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int i, j;
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switch (cs_sel) {
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case CS_SEL_YUV:
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array_size = NUM_IPU_YUV_FORMATS;
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array = ipu_yuv_formats;
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break;
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case CS_SEL_RGB:
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array_size = NUM_IPU_RGB_FORMATS;
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array = ipu_rgb_formats;
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break;
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case CS_SEL_ANY:
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array_size = NUM_IPU_YUV_FORMATS + NUM_IPU_RGB_FORMATS;
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array = ipu_yuv_formats;
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break;
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default:
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return NULL;
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}
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for (i = 0; i < array_size; i++) {
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if (cs_sel == CS_SEL_ANY && i >= NUM_IPU_YUV_FORMATS)
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fmt = &ipu_rgb_formats[i - NUM_IPU_YUV_FORMATS];
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else
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fmt = &array[i];
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for (j = 0; code && fmt->codes[j]; j++) {
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if (code == fmt->codes[j]) {
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ret = fmt;
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goto out;
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}
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}
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}
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out:
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return ret;
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}
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EXPORT_SYMBOL_GPL(imx_media_find_ipu_format);
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int imx_media_enum_ipu_format(u32 *code, u32 index, enum codespace_sel cs_sel)
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{
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switch (cs_sel) {
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case CS_SEL_YUV:
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if (index >= NUM_IPU_YUV_FORMATS)
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return -EINVAL;
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*code = ipu_yuv_formats[index].codes[0];
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break;
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case CS_SEL_RGB:
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if (index >= NUM_IPU_RGB_FORMATS)
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return -EINVAL;
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*code = ipu_rgb_formats[index].codes[0];
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break;
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case CS_SEL_ANY:
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if (index >= NUM_IPU_YUV_FORMATS + NUM_IPU_RGB_FORMATS)
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return -EINVAL;
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if (index >= NUM_IPU_YUV_FORMATS) {
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index -= NUM_IPU_YUV_FORMATS;
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*code = ipu_rgb_formats[index].codes[0];
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} else {
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*code = ipu_yuv_formats[index].codes[0];
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}
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break;
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default:
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return -EINVAL;
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}
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return 0;
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}
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EXPORT_SYMBOL_GPL(imx_media_enum_ipu_format);
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|
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int imx_media_init_mbus_fmt(struct v4l2_mbus_framefmt *mbus,
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u32 width, u32 height, u32 code, u32 field,
|
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const struct imx_media_pixfmt **cc)
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{
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const struct imx_media_pixfmt *lcc;
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mbus->width = width;
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mbus->height = height;
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mbus->field = field;
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if (code == 0)
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imx_media_enum_mbus_format(&code, 0, CS_SEL_YUV, false);
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lcc = imx_media_find_mbus_format(code, CS_SEL_ANY, false);
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if (!lcc) {
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lcc = imx_media_find_ipu_format(code, CS_SEL_ANY);
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|
if (!lcc)
|
|
return -EINVAL;
|
|
}
|
|
|
|
mbus->code = code;
|
|
init_mbus_colorimetry(mbus, lcc);
|
|
if (cc)
|
|
*cc = lcc;
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(imx_media_init_mbus_fmt);
|
|
|
|
/*
|
|
* Initializes the TRY format to the ACTIVE format on all pads
|
|
* of a subdev. Can be used as the .init_cfg pad operation.
|
|
*/
|
|
int imx_media_init_cfg(struct v4l2_subdev *sd,
|
|
struct v4l2_subdev_pad_config *cfg)
|
|
{
|
|
struct v4l2_mbus_framefmt *mf_try;
|
|
struct v4l2_subdev_format format;
|
|
unsigned int pad;
|
|
int ret;
|
|
|
|
for (pad = 0; pad < sd->entity.num_pads; pad++) {
|
|
memset(&format, 0, sizeof(format));
|
|
|
|
format.pad = pad;
|
|
format.which = V4L2_SUBDEV_FORMAT_ACTIVE;
|
|
ret = v4l2_subdev_call(sd, pad, get_fmt, NULL, &format);
|
|
if (ret)
|
|
continue;
|
|
|
|
mf_try = v4l2_subdev_get_try_format(sd, cfg, pad);
|
|
*mf_try = format.format;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(imx_media_init_cfg);
|
|
|
|
/*
|
|
* Check whether the field and colorimetry parameters in tryfmt are
|
|
* uninitialized, and if so fill them with the values from fmt,
|
|
* or if tryfmt->colorspace has been initialized, all the default
|
|
* colorimetry params can be derived from tryfmt->colorspace.
|
|
*
|
|
* tryfmt->code must be set on entry.
|
|
*
|
|
* If this format is destined to be routed through the Image Converter,
|
|
* quantization and Y`CbCr encoding must be fixed. The IC expects and
|
|
* produces fixed quantization and Y`CbCr encoding at its input and output
|
|
* (full range for RGB, limited range for YUV, and V4L2_YCBCR_ENC_601).
|
|
*/
|
|
void imx_media_fill_default_mbus_fields(struct v4l2_mbus_framefmt *tryfmt,
|
|
struct v4l2_mbus_framefmt *fmt,
|
|
bool ic_route)
|
|
{
|
|
const struct imx_media_pixfmt *cc;
|
|
bool is_rgb = false;
|
|
|
|
cc = imx_media_find_mbus_format(tryfmt->code, CS_SEL_ANY, true);
|
|
if (!cc)
|
|
cc = imx_media_find_ipu_format(tryfmt->code, CS_SEL_ANY);
|
|
if (cc && cc->cs != IPUV3_COLORSPACE_YUV)
|
|
is_rgb = true;
|
|
|
|
/* fill field if necessary */
|
|
if (tryfmt->field == V4L2_FIELD_ANY)
|
|
tryfmt->field = fmt->field;
|
|
|
|
/* fill colorimetry if necessary */
|
|
if (tryfmt->colorspace == V4L2_COLORSPACE_DEFAULT) {
|
|
tryfmt->colorspace = fmt->colorspace;
|
|
tryfmt->xfer_func = fmt->xfer_func;
|
|
tryfmt->ycbcr_enc = fmt->ycbcr_enc;
|
|
tryfmt->quantization = fmt->quantization;
|
|
} else {
|
|
if (tryfmt->xfer_func == V4L2_XFER_FUNC_DEFAULT) {
|
|
tryfmt->xfer_func =
|
|
V4L2_MAP_XFER_FUNC_DEFAULT(tryfmt->colorspace);
|
|
}
|
|
if (tryfmt->ycbcr_enc == V4L2_YCBCR_ENC_DEFAULT) {
|
|
tryfmt->ycbcr_enc =
|
|
V4L2_MAP_YCBCR_ENC_DEFAULT(tryfmt->colorspace);
|
|
}
|
|
if (tryfmt->quantization == V4L2_QUANTIZATION_DEFAULT) {
|
|
tryfmt->quantization =
|
|
V4L2_MAP_QUANTIZATION_DEFAULT(
|
|
is_rgb, tryfmt->colorspace,
|
|
tryfmt->ycbcr_enc);
|
|
}
|
|
}
|
|
|
|
if (ic_route) {
|
|
tryfmt->quantization = is_rgb ?
|
|
V4L2_QUANTIZATION_FULL_RANGE :
|
|
V4L2_QUANTIZATION_LIM_RANGE;
|
|
tryfmt->ycbcr_enc = V4L2_YCBCR_ENC_601;
|
|
}
|
|
}
|
|
EXPORT_SYMBOL_GPL(imx_media_fill_default_mbus_fields);
|
|
|
|
int imx_media_mbus_fmt_to_pix_fmt(struct v4l2_pix_format *pix,
|
|
struct v4l2_mbus_framefmt *mbus,
|
|
const struct imx_media_pixfmt *cc)
|
|
{
|
|
u32 stride;
|
|
|
|
if (!cc) {
|
|
cc = imx_media_find_ipu_format(mbus->code, CS_SEL_ANY);
|
|
if (!cc)
|
|
cc = imx_media_find_mbus_format(mbus->code, CS_SEL_ANY,
|
|
true);
|
|
if (!cc)
|
|
return -EINVAL;
|
|
}
|
|
|
|
/*
|
|
* TODO: the IPU currently does not support the AYUV32 format,
|
|
* so until it does convert to a supported YUV format.
|
|
*/
|
|
if (cc->ipufmt && cc->cs == IPUV3_COLORSPACE_YUV) {
|
|
u32 code;
|
|
|
|
imx_media_enum_mbus_format(&code, 0, CS_SEL_YUV, false);
|
|
cc = imx_media_find_mbus_format(code, CS_SEL_YUV, false);
|
|
}
|
|
|
|
stride = cc->planar ? mbus->width : (mbus->width * cc->bpp) >> 3;
|
|
|
|
pix->width = mbus->width;
|
|
pix->height = mbus->height;
|
|
pix->pixelformat = cc->fourcc;
|
|
pix->colorspace = mbus->colorspace;
|
|
pix->xfer_func = mbus->xfer_func;
|
|
pix->ycbcr_enc = mbus->ycbcr_enc;
|
|
pix->quantization = mbus->quantization;
|
|
pix->field = mbus->field;
|
|
pix->bytesperline = stride;
|
|
pix->sizeimage = (pix->width * pix->height * cc->bpp) >> 3;
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(imx_media_mbus_fmt_to_pix_fmt);
|
|
|
|
int imx_media_mbus_fmt_to_ipu_image(struct ipu_image *image,
|
|
struct v4l2_mbus_framefmt *mbus)
|
|
{
|
|
int ret;
|
|
|
|
memset(image, 0, sizeof(*image));
|
|
|
|
ret = imx_media_mbus_fmt_to_pix_fmt(&image->pix, mbus, NULL);
|
|
if (ret)
|
|
return ret;
|
|
|
|
image->rect.width = mbus->width;
|
|
image->rect.height = mbus->height;
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(imx_media_mbus_fmt_to_ipu_image);
|
|
|
|
int imx_media_ipu_image_to_mbus_fmt(struct v4l2_mbus_framefmt *mbus,
|
|
struct ipu_image *image)
|
|
{
|
|
const struct imx_media_pixfmt *fmt;
|
|
|
|
fmt = imx_media_find_format(image->pix.pixelformat, CS_SEL_ANY, true);
|
|
if (!fmt)
|
|
return -EINVAL;
|
|
|
|
memset(mbus, 0, sizeof(*mbus));
|
|
mbus->width = image->pix.width;
|
|
mbus->height = image->pix.height;
|
|
mbus->code = fmt->codes[0];
|
|
mbus->field = image->pix.field;
|
|
mbus->colorspace = image->pix.colorspace;
|
|
mbus->xfer_func = image->pix.xfer_func;
|
|
mbus->ycbcr_enc = image->pix.ycbcr_enc;
|
|
mbus->quantization = image->pix.quantization;
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(imx_media_ipu_image_to_mbus_fmt);
|
|
|
|
void imx_media_free_dma_buf(struct imx_media_dev *imxmd,
|
|
struct imx_media_dma_buf *buf)
|
|
{
|
|
if (buf->virt)
|
|
dma_free_coherent(imxmd->md.dev, buf->len,
|
|
buf->virt, buf->phys);
|
|
|
|
buf->virt = NULL;
|
|
buf->phys = 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(imx_media_free_dma_buf);
|
|
|
|
int imx_media_alloc_dma_buf(struct imx_media_dev *imxmd,
|
|
struct imx_media_dma_buf *buf,
|
|
int size)
|
|
{
|
|
imx_media_free_dma_buf(imxmd, buf);
|
|
|
|
buf->len = PAGE_ALIGN(size);
|
|
buf->virt = dma_alloc_coherent(imxmd->md.dev, buf->len, &buf->phys,
|
|
GFP_DMA | GFP_KERNEL);
|
|
if (!buf->virt) {
|
|
dev_err(imxmd->md.dev, "failed to alloc dma buffer\n");
|
|
return -ENOMEM;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(imx_media_alloc_dma_buf);
|
|
|
|
/* form a subdev name given a group id and ipu id */
|
|
void imx_media_grp_id_to_sd_name(char *sd_name, int sz, u32 grp_id, int ipu_id)
|
|
{
|
|
int id;
|
|
|
|
switch (grp_id) {
|
|
case IMX_MEDIA_GRP_ID_CSI0...IMX_MEDIA_GRP_ID_CSI1:
|
|
id = (grp_id >> IMX_MEDIA_GRP_ID_CSI_BIT) - 1;
|
|
snprintf(sd_name, sz, "ipu%d_csi%d", ipu_id + 1, id);
|
|
break;
|
|
case IMX_MEDIA_GRP_ID_VDIC:
|
|
snprintf(sd_name, sz, "ipu%d_vdic", ipu_id + 1);
|
|
break;
|
|
case IMX_MEDIA_GRP_ID_IC_PRP:
|
|
snprintf(sd_name, sz, "ipu%d_ic_prp", ipu_id + 1);
|
|
break;
|
|
case IMX_MEDIA_GRP_ID_IC_PRPENC:
|
|
snprintf(sd_name, sz, "ipu%d_ic_prpenc", ipu_id + 1);
|
|
break;
|
|
case IMX_MEDIA_GRP_ID_IC_PRPVF:
|
|
snprintf(sd_name, sz, "ipu%d_ic_prpvf", ipu_id + 1);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
EXPORT_SYMBOL_GPL(imx_media_grp_id_to_sd_name);
|
|
|
|
struct v4l2_subdev *
|
|
imx_media_find_subdev_by_fwnode(struct imx_media_dev *imxmd,
|
|
struct fwnode_handle *fwnode)
|
|
{
|
|
struct v4l2_subdev *sd;
|
|
|
|
list_for_each_entry(sd, &imxmd->v4l2_dev.subdevs, list) {
|
|
if (sd->fwnode == fwnode)
|
|
return sd;
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
EXPORT_SYMBOL_GPL(imx_media_find_subdev_by_fwnode);
|
|
|
|
struct v4l2_subdev *
|
|
imx_media_find_subdev_by_devname(struct imx_media_dev *imxmd,
|
|
const char *devname)
|
|
{
|
|
struct v4l2_subdev *sd;
|
|
|
|
list_for_each_entry(sd, &imxmd->v4l2_dev.subdevs, list) {
|
|
if (!strcmp(devname, dev_name(sd->dev)))
|
|
return sd;
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
EXPORT_SYMBOL_GPL(imx_media_find_subdev_by_devname);
|
|
|
|
/*
|
|
* Adds a video device to the master video device list. This is called by
|
|
* an async subdev that owns a video device when it is registered.
|
|
*/
|
|
int imx_media_add_video_device(struct imx_media_dev *imxmd,
|
|
struct imx_media_video_dev *vdev)
|
|
{
|
|
mutex_lock(&imxmd->mutex);
|
|
|
|
list_add_tail(&vdev->list, &imxmd->vdev_list);
|
|
|
|
mutex_unlock(&imxmd->mutex);
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(imx_media_add_video_device);
|
|
|
|
/*
|
|
* Search upstream/downstream for a subdevice in the current pipeline
|
|
* with given grp_id, starting from start_entity. Returns the subdev's
|
|
* source/sink pad that it was reached from. If grp_id is zero, just
|
|
* returns the nearest source/sink pad to start_entity. Must be called
|
|
* with mdev->graph_mutex held.
|
|
*/
|
|
static struct media_pad *
|
|
find_pipeline_pad(struct imx_media_dev *imxmd,
|
|
struct media_entity *start_entity,
|
|
u32 grp_id, bool upstream)
|
|
{
|
|
struct media_entity *me = start_entity;
|
|
struct media_pad *pad = NULL;
|
|
struct v4l2_subdev *sd;
|
|
int i;
|
|
|
|
for (i = 0; i < me->num_pads; i++) {
|
|
struct media_pad *spad = &me->pads[i];
|
|
|
|
if ((upstream && !(spad->flags & MEDIA_PAD_FL_SINK)) ||
|
|
(!upstream && !(spad->flags & MEDIA_PAD_FL_SOURCE)))
|
|
continue;
|
|
|
|
pad = media_entity_remote_pad(spad);
|
|
if (!pad || !is_media_entity_v4l2_subdev(pad->entity))
|
|
continue;
|
|
|
|
if (grp_id != 0) {
|
|
sd = media_entity_to_v4l2_subdev(pad->entity);
|
|
if (sd->grp_id & grp_id)
|
|
return pad;
|
|
|
|
return find_pipeline_pad(imxmd, pad->entity,
|
|
grp_id, upstream);
|
|
} else {
|
|
return pad;
|
|
}
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
/*
|
|
* Search upstream for a subdev in the current pipeline with
|
|
* given grp_id. Must be called with mdev->graph_mutex held.
|
|
*/
|
|
static struct v4l2_subdev *
|
|
find_upstream_subdev(struct imx_media_dev *imxmd,
|
|
struct media_entity *start_entity,
|
|
u32 grp_id)
|
|
{
|
|
struct v4l2_subdev *sd;
|
|
struct media_pad *pad;
|
|
|
|
if (is_media_entity_v4l2_subdev(start_entity)) {
|
|
sd = media_entity_to_v4l2_subdev(start_entity);
|
|
if (sd->grp_id & grp_id)
|
|
return sd;
|
|
}
|
|
|
|
pad = find_pipeline_pad(imxmd, start_entity, grp_id, true);
|
|
|
|
return pad ? media_entity_to_v4l2_subdev(pad->entity) : NULL;
|
|
}
|
|
|
|
/*
|
|
* Find the upstream mipi-csi2 virtual channel reached from the given
|
|
* start entity in the current pipeline.
|
|
* Must be called with mdev->graph_mutex held.
|
|
*/
|
|
int imx_media_find_mipi_csi2_channel(struct imx_media_dev *imxmd,
|
|
struct media_entity *start_entity)
|
|
{
|
|
struct media_pad *pad;
|
|
int ret = -EPIPE;
|
|
|
|
pad = find_pipeline_pad(imxmd, start_entity, IMX_MEDIA_GRP_ID_CSI2,
|
|
true);
|
|
if (pad) {
|
|
ret = pad->index - 1;
|
|
dev_dbg(imxmd->md.dev, "found vc%d from %s\n",
|
|
ret, start_entity->name);
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
EXPORT_SYMBOL_GPL(imx_media_find_mipi_csi2_channel);
|
|
|
|
/*
|
|
* Find a source pad reached upstream from the given start entity in
|
|
* the current pipeline. Must be called with mdev->graph_mutex held.
|
|
*/
|
|
struct media_pad *
|
|
imx_media_find_upstream_pad(struct imx_media_dev *imxmd,
|
|
struct media_entity *start_entity,
|
|
u32 grp_id)
|
|
{
|
|
struct media_pad *pad;
|
|
|
|
pad = find_pipeline_pad(imxmd, start_entity, grp_id, true);
|
|
if (!pad)
|
|
return ERR_PTR(-ENODEV);
|
|
|
|
return pad;
|
|
}
|
|
EXPORT_SYMBOL_GPL(imx_media_find_upstream_pad);
|
|
|
|
/*
|
|
* Find a subdev reached upstream from the given start entity in
|
|
* the current pipeline.
|
|
* Must be called with mdev->graph_mutex held.
|
|
*/
|
|
struct v4l2_subdev *
|
|
imx_media_find_upstream_subdev(struct imx_media_dev *imxmd,
|
|
struct media_entity *start_entity,
|
|
u32 grp_id)
|
|
{
|
|
struct v4l2_subdev *sd;
|
|
|
|
sd = find_upstream_subdev(imxmd, start_entity, grp_id);
|
|
if (!sd)
|
|
return ERR_PTR(-ENODEV);
|
|
|
|
return sd;
|
|
}
|
|
EXPORT_SYMBOL_GPL(imx_media_find_upstream_subdev);
|
|
|
|
/*
|
|
* Turn current pipeline streaming on/off starting from entity.
|
|
*/
|
|
int imx_media_pipeline_set_stream(struct imx_media_dev *imxmd,
|
|
struct media_entity *entity,
|
|
bool on)
|
|
{
|
|
struct v4l2_subdev *sd;
|
|
int ret = 0;
|
|
|
|
if (!is_media_entity_v4l2_subdev(entity))
|
|
return -EINVAL;
|
|
sd = media_entity_to_v4l2_subdev(entity);
|
|
|
|
mutex_lock(&imxmd->md.graph_mutex);
|
|
|
|
if (on) {
|
|
ret = __media_pipeline_start(entity, &imxmd->pipe);
|
|
if (ret)
|
|
goto out;
|
|
ret = v4l2_subdev_call(sd, video, s_stream, 1);
|
|
if (ret)
|
|
__media_pipeline_stop(entity);
|
|
} else {
|
|
v4l2_subdev_call(sd, video, s_stream, 0);
|
|
if (entity->pipe)
|
|
__media_pipeline_stop(entity);
|
|
}
|
|
|
|
out:
|
|
mutex_unlock(&imxmd->md.graph_mutex);
|
|
return ret;
|
|
}
|
|
EXPORT_SYMBOL_GPL(imx_media_pipeline_set_stream);
|
|
|
|
MODULE_DESCRIPTION("i.MX5/6 v4l2 media controller driver");
|
|
MODULE_AUTHOR("Steve Longerbeam <steve_longerbeam@mentor.com>");
|
|
MODULE_LICENSE("GPL");
|