mirror of https://gitee.com/openkylin/linux.git
394 lines
11 KiB
C
394 lines
11 KiB
C
/*
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* vimc-common.c Virtual Media Controller Driver
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*
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* Copyright (C) 2015-2017 Helen Koike <helen.fornazier@gmail.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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*/
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#include <linux/init.h>
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#include <linux/module.h>
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#include "vimc-common.h"
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static const __u32 vimc_mbus_list[] = {
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MEDIA_BUS_FMT_FIXED,
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MEDIA_BUS_FMT_RGB444_1X12,
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MEDIA_BUS_FMT_RGB444_2X8_PADHI_BE,
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MEDIA_BUS_FMT_RGB444_2X8_PADHI_LE,
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MEDIA_BUS_FMT_RGB555_2X8_PADHI_BE,
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MEDIA_BUS_FMT_RGB555_2X8_PADHI_LE,
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MEDIA_BUS_FMT_RGB565_1X16,
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MEDIA_BUS_FMT_BGR565_2X8_BE,
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MEDIA_BUS_FMT_BGR565_2X8_LE,
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MEDIA_BUS_FMT_RGB565_2X8_BE,
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MEDIA_BUS_FMT_RGB565_2X8_LE,
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MEDIA_BUS_FMT_RGB666_1X18,
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MEDIA_BUS_FMT_RBG888_1X24,
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MEDIA_BUS_FMT_RGB666_1X24_CPADHI,
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MEDIA_BUS_FMT_RGB666_1X7X3_SPWG,
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MEDIA_BUS_FMT_BGR888_1X24,
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MEDIA_BUS_FMT_GBR888_1X24,
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MEDIA_BUS_FMT_RGB888_1X24,
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MEDIA_BUS_FMT_RGB888_2X12_BE,
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MEDIA_BUS_FMT_RGB888_2X12_LE,
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MEDIA_BUS_FMT_RGB888_1X7X4_SPWG,
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MEDIA_BUS_FMT_RGB888_1X7X4_JEIDA,
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MEDIA_BUS_FMT_ARGB8888_1X32,
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MEDIA_BUS_FMT_RGB888_1X32_PADHI,
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MEDIA_BUS_FMT_RGB101010_1X30,
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MEDIA_BUS_FMT_RGB121212_1X36,
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MEDIA_BUS_FMT_RGB161616_1X48,
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MEDIA_BUS_FMT_Y8_1X8,
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MEDIA_BUS_FMT_UV8_1X8,
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MEDIA_BUS_FMT_UYVY8_1_5X8,
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MEDIA_BUS_FMT_VYUY8_1_5X8,
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MEDIA_BUS_FMT_YUYV8_1_5X8,
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MEDIA_BUS_FMT_YVYU8_1_5X8,
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MEDIA_BUS_FMT_UYVY8_2X8,
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MEDIA_BUS_FMT_VYUY8_2X8,
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MEDIA_BUS_FMT_YUYV8_2X8,
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MEDIA_BUS_FMT_YVYU8_2X8,
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MEDIA_BUS_FMT_Y10_1X10,
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MEDIA_BUS_FMT_Y10_2X8_PADHI_LE,
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MEDIA_BUS_FMT_UYVY10_2X10,
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MEDIA_BUS_FMT_VYUY10_2X10,
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MEDIA_BUS_FMT_YUYV10_2X10,
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MEDIA_BUS_FMT_YVYU10_2X10,
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MEDIA_BUS_FMT_Y12_1X12,
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MEDIA_BUS_FMT_UYVY12_2X12,
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MEDIA_BUS_FMT_VYUY12_2X12,
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MEDIA_BUS_FMT_YUYV12_2X12,
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MEDIA_BUS_FMT_YVYU12_2X12,
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MEDIA_BUS_FMT_UYVY8_1X16,
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MEDIA_BUS_FMT_VYUY8_1X16,
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MEDIA_BUS_FMT_YUYV8_1X16,
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MEDIA_BUS_FMT_YVYU8_1X16,
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MEDIA_BUS_FMT_YDYUYDYV8_1X16,
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MEDIA_BUS_FMT_UYVY10_1X20,
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MEDIA_BUS_FMT_VYUY10_1X20,
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MEDIA_BUS_FMT_YUYV10_1X20,
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MEDIA_BUS_FMT_YVYU10_1X20,
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MEDIA_BUS_FMT_VUY8_1X24,
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MEDIA_BUS_FMT_YUV8_1X24,
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MEDIA_BUS_FMT_UYYVYY8_0_5X24,
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MEDIA_BUS_FMT_UYVY12_1X24,
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MEDIA_BUS_FMT_VYUY12_1X24,
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MEDIA_BUS_FMT_YUYV12_1X24,
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MEDIA_BUS_FMT_YVYU12_1X24,
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MEDIA_BUS_FMT_YUV10_1X30,
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MEDIA_BUS_FMT_UYYVYY10_0_5X30,
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MEDIA_BUS_FMT_AYUV8_1X32,
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MEDIA_BUS_FMT_UYYVYY12_0_5X36,
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MEDIA_BUS_FMT_YUV12_1X36,
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MEDIA_BUS_FMT_YUV16_1X48,
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MEDIA_BUS_FMT_UYYVYY16_0_5X48,
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MEDIA_BUS_FMT_SBGGR8_1X8,
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MEDIA_BUS_FMT_SGBRG8_1X8,
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MEDIA_BUS_FMT_SGRBG8_1X8,
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MEDIA_BUS_FMT_SRGGB8_1X8,
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MEDIA_BUS_FMT_SBGGR10_ALAW8_1X8,
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MEDIA_BUS_FMT_SGBRG10_ALAW8_1X8,
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MEDIA_BUS_FMT_SGRBG10_ALAW8_1X8,
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MEDIA_BUS_FMT_SRGGB10_ALAW8_1X8,
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MEDIA_BUS_FMT_SBGGR10_DPCM8_1X8,
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MEDIA_BUS_FMT_SGBRG10_DPCM8_1X8,
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MEDIA_BUS_FMT_SGRBG10_DPCM8_1X8,
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MEDIA_BUS_FMT_SRGGB10_DPCM8_1X8,
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MEDIA_BUS_FMT_SBGGR10_2X8_PADHI_BE,
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MEDIA_BUS_FMT_SBGGR10_2X8_PADHI_LE,
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MEDIA_BUS_FMT_SBGGR10_2X8_PADLO_BE,
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MEDIA_BUS_FMT_SBGGR10_2X8_PADLO_LE,
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MEDIA_BUS_FMT_SBGGR10_1X10,
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MEDIA_BUS_FMT_SGBRG10_1X10,
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MEDIA_BUS_FMT_SGRBG10_1X10,
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MEDIA_BUS_FMT_SRGGB10_1X10,
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MEDIA_BUS_FMT_SBGGR12_1X12,
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MEDIA_BUS_FMT_SGBRG12_1X12,
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MEDIA_BUS_FMT_SGRBG12_1X12,
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MEDIA_BUS_FMT_SRGGB12_1X12,
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MEDIA_BUS_FMT_SBGGR14_1X14,
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MEDIA_BUS_FMT_SGBRG14_1X14,
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MEDIA_BUS_FMT_SGRBG14_1X14,
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MEDIA_BUS_FMT_SRGGB14_1X14,
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MEDIA_BUS_FMT_SBGGR16_1X16,
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MEDIA_BUS_FMT_SGBRG16_1X16,
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MEDIA_BUS_FMT_SGRBG16_1X16,
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MEDIA_BUS_FMT_SRGGB16_1X16,
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MEDIA_BUS_FMT_JPEG_1X8,
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MEDIA_BUS_FMT_S5C_UYVY_JPEG_1X8,
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MEDIA_BUS_FMT_AHSV8888_1X32,
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};
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/* Helper function to check mbus codes */
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bool vimc_mbus_code_supported(__u32 code)
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{
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unsigned int i;
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for (i = 0; i < ARRAY_SIZE(vimc_mbus_list); i++)
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if (code == vimc_mbus_list[i])
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return true;
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return false;
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}
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EXPORT_SYMBOL_GPL(vimc_mbus_code_supported);
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/* Helper function to enumerate mbus codes */
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int vimc_enum_mbus_code(struct v4l2_subdev *sd,
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struct v4l2_subdev_pad_config *cfg,
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struct v4l2_subdev_mbus_code_enum *code)
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{
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if (code->index >= ARRAY_SIZE(vimc_mbus_list))
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return -EINVAL;
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code->code = vimc_mbus_list[code->index];
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return 0;
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}
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EXPORT_SYMBOL_GPL(vimc_enum_mbus_code);
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/* Helper function to allocate and initialize pads */
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struct media_pad *vimc_pads_init(u16 num_pads, const unsigned long *pads_flag)
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{
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struct media_pad *pads;
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unsigned int i;
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/* Allocate memory for the pads */
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pads = kcalloc(num_pads, sizeof(*pads), GFP_KERNEL);
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if (!pads)
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return ERR_PTR(-ENOMEM);
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/* Initialize the pads */
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for (i = 0; i < num_pads; i++) {
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pads[i].index = i;
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pads[i].flags = pads_flag[i];
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}
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return pads;
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}
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EXPORT_SYMBOL_GPL(vimc_pads_init);
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int vimc_pipeline_s_stream(struct media_entity *ent, int enable)
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{
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struct v4l2_subdev *sd;
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struct media_pad *pad;
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unsigned int i;
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int ret;
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for (i = 0; i < ent->num_pads; i++) {
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if (ent->pads[i].flags & MEDIA_PAD_FL_SOURCE)
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continue;
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/* Start the stream in the subdevice direct connected */
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pad = media_entity_remote_pad(&ent->pads[i]);
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if (!pad)
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continue;
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if (!is_media_entity_v4l2_subdev(pad->entity))
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return -EINVAL;
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sd = media_entity_to_v4l2_subdev(pad->entity);
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ret = v4l2_subdev_call(sd, video, s_stream, enable);
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if (ret && ret != -ENOIOCTLCMD)
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return ret;
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}
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return 0;
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}
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EXPORT_SYMBOL_GPL(vimc_pipeline_s_stream);
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static int vimc_get_mbus_format(struct media_pad *pad,
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struct v4l2_subdev_format *fmt)
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{
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if (is_media_entity_v4l2_subdev(pad->entity)) {
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struct v4l2_subdev *sd =
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media_entity_to_v4l2_subdev(pad->entity);
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int ret;
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fmt->which = V4L2_SUBDEV_FORMAT_ACTIVE;
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fmt->pad = pad->index;
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ret = v4l2_subdev_call(sd, pad, get_fmt, NULL, fmt);
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if (ret)
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return ret;
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} else if (is_media_entity_v4l2_video_device(pad->entity)) {
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struct video_device *vdev = container_of(pad->entity,
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struct video_device,
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entity);
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struct vimc_ent_device *ved = video_get_drvdata(vdev);
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struct v4l2_pix_format vdev_fmt;
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if (!ved->vdev_get_format)
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return -ENOIOCTLCMD;
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ved->vdev_get_format(ved, &vdev_fmt);
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v4l2_fill_mbus_format(&fmt->format, &vdev_fmt, 0);
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} else {
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return -EINVAL;
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}
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return 0;
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}
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int vimc_link_validate(struct media_link *link)
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{
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struct v4l2_subdev_format source_fmt, sink_fmt;
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int ret;
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ret = vimc_get_mbus_format(link->source, &source_fmt);
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if (ret)
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return ret;
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ret = vimc_get_mbus_format(link->sink, &sink_fmt);
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if (ret)
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return ret;
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pr_info("vimc link validate: "
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"%s:src:%dx%d (0x%x, %d, %d, %d, %d) "
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"%s:snk:%dx%d (0x%x, %d, %d, %d, %d)\n",
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/* src */
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link->source->entity->name,
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source_fmt.format.width, source_fmt.format.height,
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source_fmt.format.code, source_fmt.format.colorspace,
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source_fmt.format.quantization, source_fmt.format.xfer_func,
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source_fmt.format.ycbcr_enc,
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/* sink */
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link->sink->entity->name,
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sink_fmt.format.width, sink_fmt.format.height,
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sink_fmt.format.code, sink_fmt.format.colorspace,
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sink_fmt.format.quantization, sink_fmt.format.xfer_func,
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sink_fmt.format.ycbcr_enc);
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/* The width, height and code must match. */
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if (source_fmt.format.width != sink_fmt.format.width
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|| source_fmt.format.height != sink_fmt.format.height
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|| (source_fmt.format.code && sink_fmt.format.code &&
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source_fmt.format.code != sink_fmt.format.code)) {
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pr_err("vimc: format doesn't match in link %s->%s\n",
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link->source->entity->name, link->sink->entity->name);
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return -EPIPE;
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}
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/*
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* The field order must match, or the sink field order must be NONE
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* to support interlaced hardware connected to bridges that support
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* progressive formats only.
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*/
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if (source_fmt.format.field != sink_fmt.format.field &&
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sink_fmt.format.field != V4L2_FIELD_NONE)
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return -EPIPE;
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/*
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* If colorspace is DEFAULT, then assume all the colorimetry is also
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* DEFAULT, return 0 to skip comparing the other colorimetry parameters
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*/
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if (source_fmt.format.colorspace == V4L2_COLORSPACE_DEFAULT
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|| sink_fmt.format.colorspace == V4L2_COLORSPACE_DEFAULT)
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return 0;
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/* Colorspace must match. */
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if (source_fmt.format.colorspace != sink_fmt.format.colorspace)
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return -EPIPE;
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/* Colorimetry must match if they are not set to DEFAULT */
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if (source_fmt.format.ycbcr_enc != V4L2_YCBCR_ENC_DEFAULT
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&& sink_fmt.format.ycbcr_enc != V4L2_YCBCR_ENC_DEFAULT
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&& source_fmt.format.ycbcr_enc != sink_fmt.format.ycbcr_enc)
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return -EPIPE;
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if (source_fmt.format.quantization != V4L2_QUANTIZATION_DEFAULT
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&& sink_fmt.format.quantization != V4L2_QUANTIZATION_DEFAULT
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&& source_fmt.format.quantization != sink_fmt.format.quantization)
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return -EPIPE;
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if (source_fmt.format.xfer_func != V4L2_XFER_FUNC_DEFAULT
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&& sink_fmt.format.xfer_func != V4L2_XFER_FUNC_DEFAULT
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&& source_fmt.format.xfer_func != sink_fmt.format.xfer_func)
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return -EPIPE;
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return 0;
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}
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EXPORT_SYMBOL_GPL(vimc_link_validate);
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static const struct media_entity_operations vimc_ent_sd_mops = {
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.link_validate = vimc_link_validate,
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};
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int vimc_ent_sd_register(struct vimc_ent_device *ved,
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struct v4l2_subdev *sd,
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struct v4l2_device *v4l2_dev,
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const char *const name,
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u32 function,
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u16 num_pads,
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const unsigned long *pads_flag,
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const struct v4l2_subdev_internal_ops *sd_int_ops,
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const struct v4l2_subdev_ops *sd_ops)
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{
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int ret;
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/* Allocate the pads */
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ved->pads = vimc_pads_init(num_pads, pads_flag);
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if (IS_ERR(ved->pads))
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return PTR_ERR(ved->pads);
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/* Fill the vimc_ent_device struct */
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ved->ent = &sd->entity;
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/* Initialize the subdev */
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v4l2_subdev_init(sd, sd_ops);
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sd->internal_ops = sd_int_ops;
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sd->entity.function = function;
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sd->entity.ops = &vimc_ent_sd_mops;
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sd->owner = THIS_MODULE;
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strscpy(sd->name, name, sizeof(sd->name));
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v4l2_set_subdevdata(sd, ved);
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/* Expose this subdev to user space */
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sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
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if (sd->ctrl_handler)
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sd->flags |= V4L2_SUBDEV_FL_HAS_EVENTS;
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/* Initialize the media entity */
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ret = media_entity_pads_init(&sd->entity, num_pads, ved->pads);
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if (ret)
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goto err_clean_pads;
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/* Register the subdev with the v4l2 and the media framework */
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ret = v4l2_device_register_subdev(v4l2_dev, sd);
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if (ret) {
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dev_err(v4l2_dev->dev,
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"%s: subdev register failed (err=%d)\n",
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name, ret);
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goto err_clean_m_ent;
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}
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return 0;
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err_clean_m_ent:
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media_entity_cleanup(&sd->entity);
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err_clean_pads:
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vimc_pads_cleanup(ved->pads);
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return ret;
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}
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EXPORT_SYMBOL_GPL(vimc_ent_sd_register);
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void vimc_ent_sd_unregister(struct vimc_ent_device *ved, struct v4l2_subdev *sd)
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{
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media_entity_cleanup(ved->ent);
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vimc_pads_cleanup(ved->pads);
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v4l2_device_unregister_subdev(sd);
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}
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EXPORT_SYMBOL_GPL(vimc_ent_sd_unregister);
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MODULE_DESCRIPTION("Virtual Media Controller Driver (VIMC) Common");
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MODULE_AUTHOR("Helen Koike <helen.fornazier@gmail.com>");
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MODULE_LICENSE("GPL");
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