1 /* 2 * Media Bus API header 3 * 4 * Copyright (C) 2009, Guennadi Liakhovetski <g.liakhovetski@gmx.de> 5 * 6 * This program is free software; you can redistribute it and/or modify 7 * it under the terms of the GNU General Public License version 2 as 8 * published by the Free Software Foundation. 9 */ 10 11 #ifndef V4L2_MEDIABUS_H 12 #define V4L2_MEDIABUS_H 13 14 #include <linux/v4l2-mediabus.h> 15 #include <linux/bitops.h> 16 17 /* Parallel flags */ 18 /* 19 * Can the client run in master or in slave mode. By "Master mode" an operation 20 * mode is meant, when the client (e.g., a camera sensor) is producing 21 * horizontal and vertical synchronisation. In "Slave mode" the host is 22 * providing these signals to the slave. 23 */ 24 #define V4L2_MBUS_MASTER BIT(0) 25 #define V4L2_MBUS_SLAVE BIT(1) 26 /* 27 * Signal polarity flags 28 * Note: in BT.656 mode HSYNC, FIELD, and VSYNC are unused 29 * V4L2_MBUS_[HV]SYNC* flags should be also used for specifying 30 * configuration of hardware that uses [HV]REF signals 31 */ 32 #define V4L2_MBUS_HSYNC_ACTIVE_HIGH BIT(2) 33 #define V4L2_MBUS_HSYNC_ACTIVE_LOW BIT(3) 34 #define V4L2_MBUS_VSYNC_ACTIVE_HIGH BIT(4) 35 #define V4L2_MBUS_VSYNC_ACTIVE_LOW BIT(5) 36 #define V4L2_MBUS_PCLK_SAMPLE_RISING BIT(6) 37 #define V4L2_MBUS_PCLK_SAMPLE_FALLING BIT(7) 38 #define V4L2_MBUS_DATA_ACTIVE_HIGH BIT(8) 39 #define V4L2_MBUS_DATA_ACTIVE_LOW BIT(9) 40 /* FIELD = 0/1 - Field1 (odd)/Field2 (even) */ 41 #define V4L2_MBUS_FIELD_EVEN_HIGH BIT(10) 42 /* FIELD = 1/0 - Field1 (odd)/Field2 (even) */ 43 #define V4L2_MBUS_FIELD_EVEN_LOW BIT(11) 44 /* Active state of Sync-on-green (SoG) signal, 0/1 for LOW/HIGH respectively. */ 45 #define V4L2_MBUS_VIDEO_SOG_ACTIVE_HIGH BIT(12) 46 #define V4L2_MBUS_VIDEO_SOG_ACTIVE_LOW BIT(13) 47 #define V4L2_MBUS_DATA_ENABLE_HIGH BIT(14) 48 #define V4L2_MBUS_DATA_ENABLE_LOW BIT(15) 49 50 /* Serial flags */ 51 /* How many lanes the client can use */ 52 #define V4L2_MBUS_CSI2_1_LANE BIT(0) 53 #define V4L2_MBUS_CSI2_2_LANE BIT(1) 54 #define V4L2_MBUS_CSI2_3_LANE BIT(2) 55 #define V4L2_MBUS_CSI2_4_LANE BIT(3) 56 /* On which channels it can send video data */ 57 #define V4L2_MBUS_CSI2_CHANNEL_0 BIT(4) 58 #define V4L2_MBUS_CSI2_CHANNEL_1 BIT(5) 59 #define V4L2_MBUS_CSI2_CHANNEL_2 BIT(6) 60 #define V4L2_MBUS_CSI2_CHANNEL_3 BIT(7) 61 /* Does it support only continuous or also non-continuous clock mode */ 62 #define V4L2_MBUS_CSI2_CONTINUOUS_CLOCK BIT(8) 63 #define V4L2_MBUS_CSI2_NONCONTINUOUS_CLOCK BIT(9) 64 65 #define V4L2_MBUS_CSI2_LANES (V4L2_MBUS_CSI2_1_LANE | \ 66 V4L2_MBUS_CSI2_2_LANE | \ 67 V4L2_MBUS_CSI2_3_LANE | \ 68 V4L2_MBUS_CSI2_4_LANE) 69 #define V4L2_MBUS_CSI2_CHANNELS (V4L2_MBUS_CSI2_CHANNEL_0 | \ 70 V4L2_MBUS_CSI2_CHANNEL_1 | \ 71 V4L2_MBUS_CSI2_CHANNEL_2 | \ 72 V4L2_MBUS_CSI2_CHANNEL_3) 73 74 /** 75 * enum v4l2_mbus_type - media bus type 76 * @V4L2_MBUS_UNKNOWN: unknown bus type, no V4L2 mediabus configuration 77 * @V4L2_MBUS_PARALLEL: parallel interface with hsync and vsync 78 * @V4L2_MBUS_BT656: parallel interface with embedded synchronisation, can 79 * also be used for BT.1120 80 * @V4L2_MBUS_CSI1: MIPI CSI-1 serial interface 81 * @V4L2_MBUS_CCP2: CCP2 (Compact Camera Port 2) 82 * @V4L2_MBUS_CSI2_DPHY: MIPI CSI-2 serial interface, with D-PHY 83 * @V4L2_MBUS_CSI2_CPHY: MIPI CSI-2 serial interface, with C-PHY 84 */ 85 enum v4l2_mbus_type { 86 V4L2_MBUS_UNKNOWN, 87 V4L2_MBUS_PARALLEL, 88 V4L2_MBUS_BT656, 89 V4L2_MBUS_CSI1, 90 V4L2_MBUS_CCP2, 91 V4L2_MBUS_CSI2_DPHY, 92 V4L2_MBUS_CSI2_CPHY, 93 }; 94 95 /** 96 * struct v4l2_mbus_config - media bus configuration 97 * @type: in: interface type 98 * @flags: in / out: configuration flags, depending on @type 99 */ 100 struct v4l2_mbus_config { 101 enum v4l2_mbus_type type; 102 unsigned int flags; 103 }; 104 105 /** 106 * v4l2_fill_pix_format - Ancillary routine that fills a &struct 107 * v4l2_pix_format fields from a &struct v4l2_mbus_framefmt. 108 * 109 * @pix_fmt: pointer to &struct v4l2_pix_format to be filled 110 * @mbus_fmt: pointer to &struct v4l2_mbus_framefmt to be used as model 111 */ 112 static inline void 113 v4l2_fill_pix_format(struct v4l2_pix_format *pix_fmt, 114 const struct v4l2_mbus_framefmt *mbus_fmt) 115 { 116 pix_fmt->width = mbus_fmt->width; 117 pix_fmt->height = mbus_fmt->height; 118 pix_fmt->field = mbus_fmt->field; 119 pix_fmt->colorspace = mbus_fmt->colorspace; 120 pix_fmt->ycbcr_enc = mbus_fmt->ycbcr_enc; 121 pix_fmt->quantization = mbus_fmt->quantization; 122 pix_fmt->xfer_func = mbus_fmt->xfer_func; 123 } 124 125 /** 126 * v4l2_fill_pix_format - Ancillary routine that fills a &struct 127 * v4l2_mbus_framefmt from a &struct v4l2_pix_format and a 128 * data format code. 129 * 130 * @mbus_fmt: pointer to &struct v4l2_mbus_framefmt to be filled 131 * @pix_fmt: pointer to &struct v4l2_pix_format to be used as model 132 * @code: data format code (from &enum v4l2_mbus_pixelcode) 133 */ 134 static inline void v4l2_fill_mbus_format(struct v4l2_mbus_framefmt *mbus_fmt, 135 const struct v4l2_pix_format *pix_fmt, 136 u32 code) 137 { 138 mbus_fmt->width = pix_fmt->width; 139 mbus_fmt->height = pix_fmt->height; 140 mbus_fmt->field = pix_fmt->field; 141 mbus_fmt->colorspace = pix_fmt->colorspace; 142 mbus_fmt->ycbcr_enc = pix_fmt->ycbcr_enc; 143 mbus_fmt->quantization = pix_fmt->quantization; 144 mbus_fmt->xfer_func = pix_fmt->xfer_func; 145 mbus_fmt->code = code; 146 } 147 148 /** 149 * v4l2_fill_pix_format - Ancillary routine that fills a &struct 150 * v4l2_pix_format_mplane fields from a media bus structure. 151 * 152 * @pix_mp_fmt: pointer to &struct v4l2_pix_format_mplane to be filled 153 * @mbus_fmt: pointer to &struct v4l2_mbus_framefmt to be used as model 154 */ 155 static inline void 156 v4l2_fill_pix_format_mplane(struct v4l2_pix_format_mplane *pix_mp_fmt, 157 const struct v4l2_mbus_framefmt *mbus_fmt) 158 { 159 pix_mp_fmt->width = mbus_fmt->width; 160 pix_mp_fmt->height = mbus_fmt->height; 161 pix_mp_fmt->field = mbus_fmt->field; 162 pix_mp_fmt->colorspace = mbus_fmt->colorspace; 163 pix_mp_fmt->ycbcr_enc = mbus_fmt->ycbcr_enc; 164 pix_mp_fmt->quantization = mbus_fmt->quantization; 165 pix_mp_fmt->xfer_func = mbus_fmt->xfer_func; 166 } 167 168 /** 169 * v4l2_fill_pix_format - Ancillary routine that fills a &struct 170 * v4l2_mbus_framefmt from a &struct v4l2_pix_format_mplane. 171 * 172 * @mbus_fmt: pointer to &struct v4l2_mbus_framefmt to be filled 173 * @pix_mp_fmt: pointer to &struct v4l2_pix_format_mplane to be used as model 174 */ 175 static inline void 176 v4l2_fill_mbus_format_mplane(struct v4l2_mbus_framefmt *mbus_fmt, 177 const struct v4l2_pix_format_mplane *pix_mp_fmt) 178 { 179 mbus_fmt->width = pix_mp_fmt->width; 180 mbus_fmt->height = pix_mp_fmt->height; 181 mbus_fmt->field = pix_mp_fmt->field; 182 mbus_fmt->colorspace = pix_mp_fmt->colorspace; 183 mbus_fmt->ycbcr_enc = pix_mp_fmt->ycbcr_enc; 184 mbus_fmt->quantization = pix_mp_fmt->quantization; 185 mbus_fmt->xfer_func = pix_mp_fmt->xfer_func; 186 } 187 188 #endif 189