LXR linux/drivers/media/platform/sunxi/sun6i-csi/sun6i

   1/* SPDX-License-Identifier: GPL-2.0+ */
   2/*
   3 * Copyright (c) 2011-2018 Magewell Electronics Co., Ltd. (Nanjing)
   4 * All rights reserved.
   5 * Author: Yong Deng <yong.deng@magewell.com>
   6 */
   7
   8#ifndef __SUN6I_CSI_H__
   9#define __SUN6I_CSI_H__
  10
  11#include <media/v4l2-ctrls.h>
  12#include <media/v4l2-device.h>
  13#include <media/v4l2-fwnode.h>
  14
  15#include "sun6i_video.h"
  16
  17struct sun6i_csi;
  18
  19/**
  20 * struct sun6i_csi_config - configs for sun6i csi
  21 * @pixelformat: v4l2 pixel format (V4L2_PIX_FMT_*)
  22 * @code:       media bus format code (MEDIA_BUS_FMT_*)
  23 * @field:      used interlacing type (enum v4l2_field)
  24 * @width:      frame width
  25 * @height:     frame height
  26 */
  27struct sun6i_csi_config {
  28        u32             pixelformat;
  29        u32             code;
  30        u32             field;
  31        u32             width;
  32        u32             height;
  33};
  34
  35struct sun6i_csi {
  36        struct device                   *dev;
  37        struct v4l2_ctrl_handler        ctrl_handler;
  38        struct v4l2_device              v4l2_dev;
  39        struct media_device             media_dev;
  40
  41        struct v4l2_async_notifier      notifier;
  42
  43        /* video port settings */
  44        struct v4l2_fwnode_endpoint     v4l2_ep;
  45
  46        struct sun6i_csi_config         config;
  47
  48        struct sun6i_video              video;
  49};
  50
  51/**
  52 * sun6i_csi_is_format_supported() - check if the format supported by csi
  53 * @csi:        pointer to the csi
  54 * @pixformat:  v4l2 pixel format (V4L2_PIX_FMT_*)
  55 * @mbus_code:  media bus format code (MEDIA_BUS_FMT_*)
  56 */
  57bool sun6i_csi_is_format_supported(struct sun6i_csi *csi, u32 pixformat,
  58                                   u32 mbus_code);
  59
  60/**
  61 * sun6i_csi_set_power() - power on/off the csi
  62 * @csi:        pointer to the csi
  63 * @enable:     on/off
  64 */
  65int sun6i_csi_set_power(struct sun6i_csi *csi, bool enable);
  66
  67/**
  68 * sun6i_csi_update_config() - update the csi register settings
  69 * @csi:        pointer to the csi
  70 * @config:     see struct sun6i_csi_config
  71 */
  72int sun6i_csi_update_config(struct sun6i_csi *csi,
  73                            struct sun6i_csi_config *config);
  74
  75/**
  76 * sun6i_csi_update_buf_addr() - update the csi frame buffer address
  77 * @csi:        pointer to the csi
  78 * @addr:       frame buffer's physical address
  79 */
  80void sun6i_csi_update_buf_addr(struct sun6i_csi *csi, dma_addr_t addr);
  81
  82/**
  83 * sun6i_csi_set_stream() - start/stop csi streaming
  84 * @csi:        pointer to the csi
  85 * @enable:     start/stop
  86 */
  87void sun6i_csi_set_stream(struct sun6i_csi *csi, bool enable);
  88
  89/* get bpp form v4l2 pixformat */
  90static inline int sun6i_csi_get_bpp(unsigned int pixformat)
  91{
  92        switch (pixformat) {
  93        case V4L2_PIX_FMT_SBGGR8:
  94        case V4L2_PIX_FMT_SGBRG8:
  95        case V4L2_PIX_FMT_SGRBG8:
  96        case V4L2_PIX_FMT_SRGGB8:
  97        case V4L2_PIX_FMT_JPEG:
  98                return 8;
  99        case V4L2_PIX_FMT_SBGGR10:
 100        case V4L2_PIX_FMT_SGBRG10:
 101        case V4L2_PIX_FMT_SGRBG10:
 102        case V4L2_PIX_FMT_SRGGB10:
 103                return 10;
 104        case V4L2_PIX_FMT_SBGGR12:
 105        case V4L2_PIX_FMT_SGBRG12:
 106        case V4L2_PIX_FMT_SGRBG12:
 107        case V4L2_PIX_FMT_SRGGB12:
 108        case V4L2_PIX_FMT_HM12:
 109        case V4L2_PIX_FMT_NV12:
 110        case V4L2_PIX_FMT_NV21:
 111        case V4L2_PIX_FMT_YUV420:
 112        case V4L2_PIX_FMT_YVU420:
 113                return 12;
 114        case V4L2_PIX_FMT_YUYV:
 115        case V4L2_PIX_FMT_YVYU:
 116        case V4L2_PIX_FMT_UYVY:
 117        case V4L2_PIX_FMT_VYUY:
 118        case V4L2_PIX_FMT_NV16:
 119        case V4L2_PIX_FMT_NV61:
 120        case V4L2_PIX_FMT_YUV422P:
 121        case V4L2_PIX_FMT_RGB565:
 122        case V4L2_PIX_FMT_RGB565X:
 123                return 16;
 124        case V4L2_PIX_FMT_RGB24:
 125        case V4L2_PIX_FMT_BGR24:
 126                return 24;
 127        case V4L2_PIX_FMT_RGB32:
 128        case V4L2_PIX_FMT_BGR32:
 129                return 32;
 130        default:
 131                WARN(1, "Unsupported pixformat: 0x%x\n", pixformat);
 132                break;
 133        }
 134
 135        return 0;
 136}
 137
 138#endif /* __SUN6I_CSI_H__ */
 139