| 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 | |
| 18 | /* Parallel flags */ |
| 19 | /* |
| 20 | * Can the client run in master or in slave mode. By "Master mode" an operation |
| 21 | * mode is meant, when the client (e.g., a camera sensor) is producing |
| 22 | * horizontal and vertical synchronisation. In "Slave mode" the host is |
| 23 | * providing these signals to the slave. |
| 24 | */ |
| 25 | #define V4L2_MBUS_MASTER BIT(0) |
| 26 | #define V4L2_MBUS_SLAVE BIT(1) |
| 27 | /* |
| 28 | * Signal polarity flags |
| 29 | * Note: in BT.656 mode HSYNC, FIELD, and VSYNC are unused |
| 30 | * V4L2_MBUS_[HV]SYNC* flags should be also used for specifying |
| 31 | * configuration of hardware that uses [HV]REF signals |
| 32 | */ |
| 33 | #define V4L2_MBUS_HSYNC_ACTIVE_HIGH BIT(2) |
| 34 | #define V4L2_MBUS_HSYNC_ACTIVE_LOW BIT(3) |
| 35 | #define V4L2_MBUS_VSYNC_ACTIVE_HIGH BIT(4) |
| 36 | #define V4L2_MBUS_VSYNC_ACTIVE_LOW BIT(5) |
| 37 | #define V4L2_MBUS_PCLK_SAMPLE_RISING BIT(6) |
| 38 | #define V4L2_MBUS_PCLK_SAMPLE_FALLING BIT(7) |
| 39 | #define V4L2_MBUS_DATA_ACTIVE_HIGH BIT(8) |
| 40 | #define V4L2_MBUS_DATA_ACTIVE_LOW BIT(9) |
| 41 | /* FIELD = 0/1 - Field1 (odd)/Field2 (even) */ |
| 42 | #define V4L2_MBUS_FIELD_EVEN_HIGH BIT(10) |
| 43 | /* FIELD = 1/0 - Field1 (odd)/Field2 (even) */ |
| 44 | #define V4L2_MBUS_FIELD_EVEN_LOW BIT(11) |
| 45 | /* Active state of Sync-on-green (SoG) signal, 0/1 for LOW/HIGH respectively. */ |
| 46 | #define V4L2_MBUS_VIDEO_SOG_ACTIVE_HIGH BIT(12) |
| 47 | #define V4L2_MBUS_VIDEO_SOG_ACTIVE_LOW BIT(13) |
| 48 | |
| 49 | /* Serial flags */ |
| 50 | /* How many lanes the client can use */ |
| 51 | #define V4L2_MBUS_CSI2_1_LANE BIT(0) |
| 52 | #define V4L2_MBUS_CSI2_2_LANE BIT(1) |
| 53 | #define V4L2_MBUS_CSI2_3_LANE BIT(2) |
| 54 | #define V4L2_MBUS_CSI2_4_LANE BIT(3) |
| 55 | /* On which channels it can send video data */ |
| 56 | #define V4L2_MBUS_CSI2_CHANNEL_0 BIT(4) |
| 57 | #define V4L2_MBUS_CSI2_CHANNEL_1 BIT(5) |
| 58 | #define V4L2_MBUS_CSI2_CHANNEL_2 BIT(6) |
| 59 | #define V4L2_MBUS_CSI2_CHANNEL_3 BIT(7) |
| 60 | /* Does it support only continuous or also non-continuous clock mode */ |
| 61 | #define V4L2_MBUS_CSI2_CONTINUOUS_CLOCK BIT(8) |
| 62 | #define V4L2_MBUS_CSI2_NONCONTINUOUS_CLOCK BIT(9) |
| 63 | |
| 64 | #define V4L2_MBUS_CSI2_LANES (V4L2_MBUS_CSI2_1_LANE | V4L2_MBUS_CSI2_2_LANE | \ |
| 65 | V4L2_MBUS_CSI2_3_LANE | V4L2_MBUS_CSI2_4_LANE) |
| 66 | #define V4L2_MBUS_CSI2_CHANNELS (V4L2_MBUS_CSI2_CHANNEL_0 | V4L2_MBUS_CSI2_CHANNEL_1 | \ |
| 67 | V4L2_MBUS_CSI2_CHANNEL_2 | V4L2_MBUS_CSI2_CHANNEL_3) |
| 68 | |
| 69 | /** |
| 70 | * enum v4l2_mbus_type - media bus type |
| 71 | * @V4L2_MBUS_PARALLEL: parallel interface with hsync and vsync |
| 72 | * @V4L2_MBUS_BT656: parallel interface with embedded synchronisation, can |
| 73 | * also be used for BT.1120 |
| 74 | * @V4L2_MBUS_CSI1: MIPI CSI-1 serial interface |
| 75 | * @V4L2_MBUS_CCP2: CCP2 (Compact Camera Port 2) |
| 76 | * @V4L2_MBUS_CSI2: MIPI CSI-2 serial interface |
| 77 | */ |
| 78 | enum v4l2_mbus_type { |
| 79 | V4L2_MBUS_PARALLEL, |
| 80 | V4L2_MBUS_BT656, |
| 81 | V4L2_MBUS_CSI1, |
| 82 | V4L2_MBUS_CCP2, |
| 83 | V4L2_MBUS_CSI2, |
| 84 | }; |
| 85 | |
| 86 | /** |
| 87 | * struct v4l2_mbus_config - media bus configuration |
| 88 | * @type: in: interface type |
| 89 | * @flags: in / out: configuration flags, depending on @type |
| 90 | */ |
| 91 | struct v4l2_mbus_config { |
| 92 | enum v4l2_mbus_type type; |
| 93 | unsigned int flags; |
| 94 | }; |
| 95 | |
| 96 | static inline void v4l2_fill_pix_format(struct v4l2_pix_format *pix_fmt, |
| 97 | const struct v4l2_mbus_framefmt *mbus_fmt) |
| 98 | { |
| 99 | pix_fmt->width = mbus_fmt->width; |
| 100 | pix_fmt->height = mbus_fmt->height; |
| 101 | pix_fmt->field = mbus_fmt->field; |
| 102 | pix_fmt->colorspace = mbus_fmt->colorspace; |
| 103 | pix_fmt->ycbcr_enc = mbus_fmt->ycbcr_enc; |
| 104 | pix_fmt->quantization = mbus_fmt->quantization; |
| 105 | pix_fmt->xfer_func = mbus_fmt->xfer_func; |
| 106 | } |
| 107 | |
| 108 | static inline void v4l2_fill_mbus_format(struct v4l2_mbus_framefmt *mbus_fmt, |
| 109 | const struct v4l2_pix_format *pix_fmt, |
| 110 | u32 code) |
| 111 | { |
| 112 | mbus_fmt->width = pix_fmt->width; |
| 113 | mbus_fmt->height = pix_fmt->height; |
| 114 | mbus_fmt->field = pix_fmt->field; |
| 115 | mbus_fmt->colorspace = pix_fmt->colorspace; |
| 116 | mbus_fmt->ycbcr_enc = pix_fmt->ycbcr_enc; |
| 117 | mbus_fmt->quantization = pix_fmt->quantization; |
| 118 | mbus_fmt->xfer_func = pix_fmt->xfer_func; |
| 119 | mbus_fmt->code = code; |
| 120 | } |
| 121 | |
| 122 | static inline void v4l2_fill_pix_format_mplane( |
| 123 | struct v4l2_pix_format_mplane *pix_mp_fmt, |
| 124 | const struct v4l2_mbus_framefmt *mbus_fmt) |
| 125 | { |
| 126 | pix_mp_fmt->width = mbus_fmt->width; |
| 127 | pix_mp_fmt->height = mbus_fmt->height; |
| 128 | pix_mp_fmt->field = mbus_fmt->field; |
| 129 | pix_mp_fmt->colorspace = mbus_fmt->colorspace; |
| 130 | pix_mp_fmt->ycbcr_enc = mbus_fmt->ycbcr_enc; |
| 131 | pix_mp_fmt->quantization = mbus_fmt->quantization; |
| 132 | pix_mp_fmt->xfer_func = mbus_fmt->xfer_func; |
| 133 | } |
| 134 | |
| 135 | static inline void v4l2_fill_mbus_format_mplane( |
| 136 | struct v4l2_mbus_framefmt *mbus_fmt, |
| 137 | const struct v4l2_pix_format_mplane *pix_mp_fmt) |
| 138 | { |
| 139 | mbus_fmt->width = pix_mp_fmt->width; |
| 140 | mbus_fmt->height = pix_mp_fmt->height; |
| 141 | mbus_fmt->field = pix_mp_fmt->field; |
| 142 | mbus_fmt->colorspace = pix_mp_fmt->colorspace; |
| 143 | mbus_fmt->ycbcr_enc = pix_mp_fmt->ycbcr_enc; |
| 144 | mbus_fmt->quantization = pix_mp_fmt->quantization; |
| 145 | mbus_fmt->xfer_func = pix_mp_fmt->xfer_func; |
| 146 | } |
| 147 | |
| 148 | #endif |