include/media/v4l2-mediabus.h

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2 /*
   3  * Media Bus API header
   4  *
   5  * Copyright (C) 2009, Guennadi Liakhovetski <g.liakhovetski@gmx.de>
   6  */
   7
   8 #ifndef V4L2_MEDIABUS_H
   9 #define V4L2_MEDIABUS_H
  10
  11 #include <linux/v4l2-mediabus.h>
  12 #include <linux/bitops.h>
  13
  14 /* Parallel flags */
  15 /*
  16  * Can the client run in master or in slave mode. By "Master mode" an operation
  17  * mode is meant, when the client (e.g., a camera sensor) is producing
  18  * horizontal and vertical synchronisation. In "Slave mode" the host is
  19  * providing these signals to the slave.
  20  */
  21 #define V4L2_MBUS_MASTER                        BIT(0)
  22 #define V4L2_MBUS_SLAVE                         BIT(1)
  23 /*
  24  * Signal polarity flags
  25  * Note: in BT.656 mode HSYNC, FIELD, and VSYNC are unused
  26  * V4L2_MBUS_[HV]SYNC* flags should be also used for specifying
  27  * configuration of hardware that uses [HV]REF signals
  28  */
  29 #define V4L2_MBUS_HSYNC_ACTIVE_HIGH             BIT(2)
  30 #define V4L2_MBUS_HSYNC_ACTIVE_LOW              BIT(3)
  31 #define V4L2_MBUS_VSYNC_ACTIVE_HIGH             BIT(4)
  32 #define V4L2_MBUS_VSYNC_ACTIVE_LOW              BIT(5)
  33 #define V4L2_MBUS_PCLK_SAMPLE_RISING            BIT(6)
  34 #define V4L2_MBUS_PCLK_SAMPLE_FALLING           BIT(7)
  35 #define V4L2_MBUS_DATA_ACTIVE_HIGH              BIT(8)
  36 #define V4L2_MBUS_DATA_ACTIVE_LOW               BIT(9)
  37 /* FIELD = 0/1 - Field1 (odd)/Field2 (even) */
  38 #define V4L2_MBUS_FIELD_EVEN_HIGH               BIT(10)
  39 /* FIELD = 1/0 - Field1 (odd)/Field2 (even) */
  40 #define V4L2_MBUS_FIELD_EVEN_LOW                BIT(11)
  41 /* Active state of Sync-on-green (SoG) signal, 0/1 for LOW/HIGH respectively. */
  42 #define V4L2_MBUS_VIDEO_SOG_ACTIVE_HIGH         BIT(12)
  43 #define V4L2_MBUS_VIDEO_SOG_ACTIVE_LOW          BIT(13)
  44 #define V4L2_MBUS_DATA_ENABLE_HIGH              BIT(14)
  45 #define V4L2_MBUS_DATA_ENABLE_LOW               BIT(15)
  46
  47 /* Serial flags */
  48 /* How many lanes the client can use */
  49 #define V4L2_MBUS_CSI2_1_LANE                   BIT(0)
  50 #define V4L2_MBUS_CSI2_2_LANE                   BIT(1)
  51 #define V4L2_MBUS_CSI2_3_LANE                   BIT(2)
  52 #define V4L2_MBUS_CSI2_4_LANE                   BIT(3)
  53 /* On which channels it can send video data */
  54 #define V4L2_MBUS_CSI2_CHANNEL_0                BIT(4)
  55 #define V4L2_MBUS_CSI2_CHANNEL_1                BIT(5)
  56 #define V4L2_MBUS_CSI2_CHANNEL_2                BIT(6)
  57 #define V4L2_MBUS_CSI2_CHANNEL_3                BIT(7)
  58 /* Does it support only continuous or also non-continuous clock mode */
  59 #define V4L2_MBUS_CSI2_CONTINUOUS_CLOCK         BIT(8)
  60 #define V4L2_MBUS_CSI2_NONCONTINUOUS_CLOCK      BIT(9)
  61
  62 #define V4L2_MBUS_CSI2_LANES            (V4L2_MBUS_CSI2_1_LANE | \
  63                                          V4L2_MBUS_CSI2_2_LANE | \
  64                                          V4L2_MBUS_CSI2_3_LANE | \
  65                                          V4L2_MBUS_CSI2_4_LANE)
  66 #define V4L2_MBUS_CSI2_CHANNELS         (V4L2_MBUS_CSI2_CHANNEL_0 | \
  67                                          V4L2_MBUS_CSI2_CHANNEL_1 | \
  68                                          V4L2_MBUS_CSI2_CHANNEL_2 | \
  69                                          V4L2_MBUS_CSI2_CHANNEL_3)
  70
  71 /**
  72  * enum v4l2_mbus_type - media bus type
  73  * @V4L2_MBUS_UNKNOWN:  unknown bus type, no V4L2 mediabus configuration
  74  * @V4L2_MBUS_PARALLEL: parallel interface with hsync and vsync
  75  * @V4L2_MBUS_BT656:    parallel interface with embedded synchronisation, can
  76  *                      also be used for BT.1120
  77  * @V4L2_MBUS_CSI1:     MIPI CSI-1 serial interface
  78  * @V4L2_MBUS_CCP2:     CCP2 (Compact Camera Port 2)
  79  * @V4L2_MBUS_CSI2_DPHY: MIPI CSI-2 serial interface, with D-PHY
  80  * @V4L2_MBUS_CSI2_CPHY: MIPI CSI-2 serial interface, with C-PHY
  81  */
  82 enum v4l2_mbus_type {
  83         V4L2_MBUS_UNKNOWN,
  84         V4L2_MBUS_PARALLEL,
  85         V4L2_MBUS_BT656,
  86         V4L2_MBUS_CSI1,
  87         V4L2_MBUS_CCP2,
  88         V4L2_MBUS_CSI2_DPHY,
  89         V4L2_MBUS_CSI2_CPHY,
  90 };
  91
  92 /**
  93  * struct v4l2_mbus_config - media bus configuration
  94  * @type:       in: interface type
  95  * @flags:      in / out: configuration flags, depending on @type
  96  */
  97 struct v4l2_mbus_config {
  98         enum v4l2_mbus_type type;
  99         unsigned int flags;
 100 };
 101
 102 /**
 103  * v4l2_fill_pix_format - Ancillary routine that fills a &struct
 104  *      v4l2_pix_format fields from a &struct v4l2_mbus_framefmt.
 105  *
 106  * @pix_fmt:    pointer to &struct v4l2_pix_format to be filled
 107  * @mbus_fmt:   pointer to &struct v4l2_mbus_framefmt to be used as model
 108  */
 109 static inline void
 110 v4l2_fill_pix_format(struct v4l2_pix_format *pix_fmt,
 111                      const struct v4l2_mbus_framefmt *mbus_fmt)
 112 {
 113         pix_fmt->width = mbus_fmt->width;
 114         pix_fmt->height = mbus_fmt->height;
 115         pix_fmt->field = mbus_fmt->field;
 116         pix_fmt->colorspace = mbus_fmt->colorspace;
 117         pix_fmt->ycbcr_enc = mbus_fmt->ycbcr_enc;
 118         pix_fmt->quantization = mbus_fmt->quantization;
 119         pix_fmt->xfer_func = mbus_fmt->xfer_func;
 120 }
 121
 122 /**
 123  * v4l2_fill_pix_format - Ancillary routine that fills a &struct
 124  *      v4l2_mbus_framefmt from a &struct v4l2_pix_format and a
 125  *      data format code.
 126  *
 127  * @mbus_fmt:   pointer to &struct v4l2_mbus_framefmt to be filled
 128  * @pix_fmt:    pointer to &struct v4l2_pix_format to be used as model
 129  * @code:       data format code (from &enum v4l2_mbus_pixelcode)
 130  */
 131 static inline void v4l2_fill_mbus_format(struct v4l2_mbus_framefmt *mbus_fmt,
 132                                          const struct v4l2_pix_format *pix_fmt,
 133                            u32 code)
 134 {
 135         mbus_fmt->width = pix_fmt->width;
 136         mbus_fmt->height = pix_fmt->height;
 137         mbus_fmt->field = pix_fmt->field;
 138         mbus_fmt->colorspace = pix_fmt->colorspace;
 139         mbus_fmt->ycbcr_enc = pix_fmt->ycbcr_enc;
 140         mbus_fmt->quantization = pix_fmt->quantization;
 141         mbus_fmt->xfer_func = pix_fmt->xfer_func;
 142         mbus_fmt->code = code;
 143 }
 144
 145 /**
 146  * v4l2_fill_pix_format - Ancillary routine that fills a &struct
 147  *      v4l2_pix_format_mplane fields from a media bus structure.
 148  *
 149  * @pix_mp_fmt: pointer to &struct v4l2_pix_format_mplane to be filled
 150  * @mbus_fmt:   pointer to &struct v4l2_mbus_framefmt to be used as model
 151  */
 152 static inline void
 153 v4l2_fill_pix_format_mplane(struct v4l2_pix_format_mplane *pix_mp_fmt,
 154                             const struct v4l2_mbus_framefmt *mbus_fmt)
 155 {
 156         pix_mp_fmt->width = mbus_fmt->width;
 157         pix_mp_fmt->height = mbus_fmt->height;
 158         pix_mp_fmt->field = mbus_fmt->field;
 159         pix_mp_fmt->colorspace = mbus_fmt->colorspace;
 160         pix_mp_fmt->ycbcr_enc = mbus_fmt->ycbcr_enc;
 161         pix_mp_fmt->quantization = mbus_fmt->quantization;
 162         pix_mp_fmt->xfer_func = mbus_fmt->xfer_func;
 163 }
 164
 165 /**
 166  * v4l2_fill_pix_format - Ancillary routine that fills a &struct
 167  *      v4l2_mbus_framefmt from a &struct v4l2_pix_format_mplane.
 168  *
 169  * @mbus_fmt:   pointer to &struct v4l2_mbus_framefmt to be filled
 170  * @pix_mp_fmt: pointer to &struct v4l2_pix_format_mplane to be used as model
 171  */
 172 static inline void
 173 v4l2_fill_mbus_format_mplane(struct v4l2_mbus_framefmt *mbus_fmt,
 174                              const struct v4l2_pix_format_mplane *pix_mp_fmt)
 175 {
 176         mbus_fmt->width = pix_mp_fmt->width;
 177         mbus_fmt->height = pix_mp_fmt->height;
 178         mbus_fmt->field = pix_mp_fmt->field;
 179         mbus_fmt->colorspace = pix_mp_fmt->colorspace;
 180         mbus_fmt->ycbcr_enc = pix_mp_fmt->ycbcr_enc;
 181         mbus_fmt->quantization = pix_mp_fmt->quantization;
 182         mbus_fmt->xfer_func = pix_mp_fmt->xfer_func;
 183 }
 184
 185 #endif