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 /* Which signal polarities it supports */ 26 /* Note: in BT.656 mode HSYNC and VSYNC are unused */ 27 #define V4L2_MBUS_HSYNC_ACTIVE_HIGH (1 << 2) 28 #define V4L2_MBUS_HSYNC_ACTIVE_LOW (1 << 3) 29 #define V4L2_MBUS_VSYNC_ACTIVE_HIGH (1 << 4) 30 #define V4L2_MBUS_VSYNC_ACTIVE_LOW (1 << 5) 31 #define V4L2_MBUS_PCLK_SAMPLE_RISING (1 << 6) 32 #define V4L2_MBUS_PCLK_SAMPLE_FALLING (1 << 7) 33 #define V4L2_MBUS_DATA_ACTIVE_HIGH (1 << 8) 34 #define V4L2_MBUS_DATA_ACTIVE_LOW (1 << 9) 35 36 /* Serial flags */ 37 /* How many lanes the client can use */ 38 #define V4L2_MBUS_CSI2_1_LANE (1 << 0) 39 #define V4L2_MBUS_CSI2_2_LANE (1 << 1) 40 #define V4L2_MBUS_CSI2_3_LANE (1 << 2) 41 #define V4L2_MBUS_CSI2_4_LANE (1 << 3) 42 /* On which channels it can send video data */ 43 #define V4L2_MBUS_CSI2_CHANNEL_0 (1 << 4) 44 #define V4L2_MBUS_CSI2_CHANNEL_1 (1 << 5) 45 #define V4L2_MBUS_CSI2_CHANNEL_2 (1 << 6) 46 #define V4L2_MBUS_CSI2_CHANNEL_3 (1 << 7) 47 /* Does it support only continuous or also non-continuous clock mode */ 48 #define V4L2_MBUS_CSI2_CONTINUOUS_CLOCK (1 << 8) 49 #define V4L2_MBUS_CSI2_NONCONTINUOUS_CLOCK (1 << 9) 50 51 #define V4L2_MBUS_CSI2_LANES (V4L2_MBUS_CSI2_1_LANE | V4L2_MBUS_CSI2_2_LANE | \ 52 V4L2_MBUS_CSI2_3_LANE | V4L2_MBUS_CSI2_4_LANE) 53 #define V4L2_MBUS_CSI2_CHANNELS (V4L2_MBUS_CSI2_CHANNEL_0 | V4L2_MBUS_CSI2_CHANNEL_1 | \ 54 V4L2_MBUS_CSI2_CHANNEL_2 | V4L2_MBUS_CSI2_CHANNEL_3) 55 56 /** 57 * v4l2_mbus_type - media bus type 58 * @V4L2_MBUS_PARALLEL: parallel interface with hsync and vsync 59 * @V4L2_MBUS_BT656: parallel interface with embedded synchronisation, can 60 * also be used for BT.1120 61 * @V4L2_MBUS_CSI2: MIPI CSI-2 serial interface 62 */ 63 enum v4l2_mbus_type { 64 V4L2_MBUS_PARALLEL, 65 V4L2_MBUS_BT656, 66 V4L2_MBUS_CSI2, 67 }; 68 69 /** 70 * v4l2_mbus_config - media bus configuration 71 * @type: in: interface type 72 * @flags: in / out: configuration flags, depending on @type 73 */ 74 struct v4l2_mbus_config { 75 enum v4l2_mbus_type type; 76 unsigned int flags; 77 }; 78 79 static inline void v4l2_fill_pix_format(struct v4l2_pix_format *pix_fmt, 80 const struct v4l2_mbus_framefmt *mbus_fmt) 81 { 82 pix_fmt->width = mbus_fmt->width; 83 pix_fmt->height = mbus_fmt->height; 84 pix_fmt->field = mbus_fmt->field; 85 pix_fmt->colorspace = mbus_fmt->colorspace; 86 } 87 88 static inline void v4l2_fill_mbus_format(struct v4l2_mbus_framefmt *mbus_fmt, 89 const struct v4l2_pix_format *pix_fmt, 90 enum v4l2_mbus_pixelcode code) 91 { 92 mbus_fmt->width = pix_fmt->width; 93 mbus_fmt->height = pix_fmt->height; 94 mbus_fmt->field = pix_fmt->field; 95 mbus_fmt->colorspace = pix_fmt->colorspace; 96 mbus_fmt->code = code; 97 } 98 99 #endif 100