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 16 /* Parallel flags */ 17 /* 18 * Can the client run in master or in slave mode. By "Master mode" an operation 19 * mode is meant, when the client (e.g., a camera sensor) is producing 20 * horizontal and vertical synchronisation. In "Slave mode" the host is 21 * providing these signals to the slave. 22 */ 23 #define V4L2_MBUS_MASTER (1 << 0) 24 #define V4L2_MBUS_SLAVE (1 << 1) 25 /* 26 * Signal polarity flags 27 * Note: in BT.656 mode HSYNC, FIELD, and VSYNC are unused 28 * V4L2_MBUS_[HV]SYNC* flags should be also used for specifying 29 * configuration of hardware that uses [HV]REF signals 30 */ 31 #define V4L2_MBUS_HSYNC_ACTIVE_HIGH (1 << 2) 32 #define V4L2_MBUS_HSYNC_ACTIVE_LOW (1 << 3) 33 #define V4L2_MBUS_VSYNC_ACTIVE_HIGH (1 << 4) 34 #define V4L2_MBUS_VSYNC_ACTIVE_LOW (1 << 5) 35 #define V4L2_MBUS_PCLK_SAMPLE_RISING (1 << 6) 36 #define V4L2_MBUS_PCLK_SAMPLE_FALLING (1 << 7) 37 #define V4L2_MBUS_DATA_ACTIVE_HIGH (1 << 8) 38 #define V4L2_MBUS_DATA_ACTIVE_LOW (1 << 9) 39 /* FIELD = 0/1 - Field1 (odd)/Field2 (even) */ 40 #define V4L2_MBUS_FIELD_EVEN_HIGH (1 << 10) 41 /* FIELD = 1/0 - Field1 (odd)/Field2 (even) */ 42 #define V4L2_MBUS_FIELD_EVEN_LOW (1 << 11) 43 /* Active state of Sync-on-green (SoG) signal, 0/1 for LOW/HIGH respectively. */ 44 #define V4L2_MBUS_VIDEO_SOG_ACTIVE_HIGH (1 << 12) 45 #define V4L2_MBUS_VIDEO_SOG_ACTIVE_LOW (1 << 13) 46 47 /* Serial flags */ 48 /* How many lanes the client can use */ 49 #define V4L2_MBUS_CSI2_1_LANE (1 << 0) 50 #define V4L2_MBUS_CSI2_2_LANE (1 << 1) 51 #define V4L2_MBUS_CSI2_3_LANE (1 << 2) 52 #define V4L2_MBUS_CSI2_4_LANE (1 << 3) 53 /* On which channels it can send video data */ 54 #define V4L2_MBUS_CSI2_CHANNEL_0 (1 << 4) 55 #define V4L2_MBUS_CSI2_CHANNEL_1 (1 << 5) 56 #define V4L2_MBUS_CSI2_CHANNEL_2 (1 << 6) 57 #define V4L2_MBUS_CSI2_CHANNEL_3 (1 << 7) 58 /* Does it support only continuous or also non-continuous clock mode */ 59 #define V4L2_MBUS_CSI2_CONTINUOUS_CLOCK (1 << 8) 60 #define V4L2_MBUS_CSI2_NONCONTINUOUS_CLOCK (1 << 9) 61 62 #define V4L2_MBUS_CSI2_LANES (V4L2_MBUS_CSI2_1_LANE | V4L2_MBUS_CSI2_2_LANE | \ 63 V4L2_MBUS_CSI2_3_LANE | V4L2_MBUS_CSI2_4_LANE) 64 #define V4L2_MBUS_CSI2_CHANNELS (V4L2_MBUS_CSI2_CHANNEL_0 | V4L2_MBUS_CSI2_CHANNEL_1 | \ 65 V4L2_MBUS_CSI2_CHANNEL_2 | V4L2_MBUS_CSI2_CHANNEL_3) 66 67 /** 68 * v4l2_mbus_type - media bus type 69 * @V4L2_MBUS_PARALLEL: parallel interface with hsync and vsync 70 * @V4L2_MBUS_BT656: parallel interface with embedded synchronisation, can 71 * also be used for BT.1120 72 * @V4L2_MBUS_CSI2: MIPI CSI-2 serial interface 73 */ 74 enum v4l2_mbus_type { 75 V4L2_MBUS_PARALLEL, 76 V4L2_MBUS_BT656, 77 V4L2_MBUS_CSI2, 78 }; 79 80 /** 81 * v4l2_mbus_config - media bus configuration 82 * @type: in: interface type 83 * @flags: in / out: configuration flags, depending on @type 84 */ 85 struct v4l2_mbus_config { 86 enum v4l2_mbus_type type; 87 unsigned int flags; 88 }; 89 90 static inline void v4l2_fill_pix_format(struct v4l2_pix_format *pix_fmt, 91 const struct v4l2_mbus_framefmt *mbus_fmt) 92 { 93 pix_fmt->width = mbus_fmt->width; 94 pix_fmt->height = mbus_fmt->height; 95 pix_fmt->field = mbus_fmt->field; 96 pix_fmt->colorspace = mbus_fmt->colorspace; 97 pix_fmt->ycbcr_enc = mbus_fmt->ycbcr_enc; 98 pix_fmt->quantization = mbus_fmt->quantization; 99 } 100 101 static inline void v4l2_fill_mbus_format(struct v4l2_mbus_framefmt *mbus_fmt, 102 const struct v4l2_pix_format *pix_fmt, 103 u32 code) 104 { 105 mbus_fmt->width = pix_fmt->width; 106 mbus_fmt->height = pix_fmt->height; 107 mbus_fmt->field = pix_fmt->field; 108 mbus_fmt->colorspace = pix_fmt->colorspace; 109 mbus_fmt->ycbcr_enc = pix_fmt->ycbcr_enc; 110 mbus_fmt->quantization = pix_fmt->quantization; 111 mbus_fmt->code = code; 112 } 113 114 #endif 115