diff options
Diffstat (limited to 'include/media/v4l2-mediabus.h')
| -rw-r--r-- | include/media/v4l2-mediabus.h | 180 |
1 files changed, 180 insertions, 0 deletions
diff --git a/include/media/v4l2-mediabus.h b/include/media/v4l2-mediabus.h new file mode 100644 index 000000000..4bbb5f3d2 --- /dev/null +++ b/include/media/v4l2-mediabus.h @@ -0,0 +1,180 @@ +/* + * Media Bus API header + * + * Copyright (C) 2009, Guennadi Liakhovetski <g.liakhovetski@gmx.de> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#ifndef V4L2_MEDIABUS_H +#define V4L2_MEDIABUS_H + +#include <linux/v4l2-mediabus.h> +#include <linux/bitops.h> + + +/* Parallel flags */ +/* + * Can the client run in master or in slave mode. By "Master mode" an operation + * mode is meant, when the client (e.g., a camera sensor) is producing + * horizontal and vertical synchronisation. In "Slave mode" the host is + * providing these signals to the slave. + */ +#define V4L2_MBUS_MASTER BIT(0) +#define V4L2_MBUS_SLAVE BIT(1) +/* + * Signal polarity flags + * Note: in BT.656 mode HSYNC, FIELD, and VSYNC are unused + * V4L2_MBUS_[HV]SYNC* flags should be also used for specifying + * configuration of hardware that uses [HV]REF signals + */ +#define V4L2_MBUS_HSYNC_ACTIVE_HIGH BIT(2) +#define V4L2_MBUS_HSYNC_ACTIVE_LOW BIT(3) +#define V4L2_MBUS_VSYNC_ACTIVE_HIGH BIT(4) +#define V4L2_MBUS_VSYNC_ACTIVE_LOW BIT(5) +#define V4L2_MBUS_PCLK_SAMPLE_RISING BIT(6) +#define V4L2_MBUS_PCLK_SAMPLE_FALLING BIT(7) +#define V4L2_MBUS_DATA_ACTIVE_HIGH BIT(8) +#define V4L2_MBUS_DATA_ACTIVE_LOW BIT(9) +/* FIELD = 0/1 - Field1 (odd)/Field2 (even) */ +#define V4L2_MBUS_FIELD_EVEN_HIGH BIT(10) +/* FIELD = 1/0 - Field1 (odd)/Field2 (even) */ +#define V4L2_MBUS_FIELD_EVEN_LOW BIT(11) +/* Active state of Sync-on-green (SoG) signal, 0/1 for LOW/HIGH respectively. */ +#define V4L2_MBUS_VIDEO_SOG_ACTIVE_HIGH BIT(12) +#define V4L2_MBUS_VIDEO_SOG_ACTIVE_LOW BIT(13) +#define V4L2_MBUS_DATA_ENABLE_HIGH BIT(14) +#define V4L2_MBUS_DATA_ENABLE_LOW BIT(15) + +/* Serial flags */ +/* How many lanes the client can use */ +#define V4L2_MBUS_CSI2_1_LANE BIT(0) +#define V4L2_MBUS_CSI2_2_LANE BIT(1) +#define V4L2_MBUS_CSI2_3_LANE BIT(2) +#define V4L2_MBUS_CSI2_4_LANE BIT(3) +/* On which channels it can send video data */ +#define V4L2_MBUS_CSI2_CHANNEL_0 BIT(4) +#define V4L2_MBUS_CSI2_CHANNEL_1 BIT(5) +#define V4L2_MBUS_CSI2_CHANNEL_2 BIT(6) +#define V4L2_MBUS_CSI2_CHANNEL_3 BIT(7) +/* Does it support only continuous or also non-continuous clock mode */ +#define V4L2_MBUS_CSI2_CONTINUOUS_CLOCK BIT(8) +#define V4L2_MBUS_CSI2_NONCONTINUOUS_CLOCK BIT(9) + +#define V4L2_MBUS_CSI2_LANES (V4L2_MBUS_CSI2_1_LANE | V4L2_MBUS_CSI2_2_LANE | \ + V4L2_MBUS_CSI2_3_LANE | V4L2_MBUS_CSI2_4_LANE) +#define V4L2_MBUS_CSI2_CHANNELS (V4L2_MBUS_CSI2_CHANNEL_0 | V4L2_MBUS_CSI2_CHANNEL_1 | \ + V4L2_MBUS_CSI2_CHANNEL_2 | V4L2_MBUS_CSI2_CHANNEL_3) + +/** + * enum v4l2_mbus_type - media bus type + * @V4L2_MBUS_PARALLEL: parallel interface with hsync and vsync + * @V4L2_MBUS_BT656: parallel interface with embedded synchronisation, can + * also be used for BT.1120 + * @V4L2_MBUS_CSI1: MIPI CSI-1 serial interface + * @V4L2_MBUS_CCP2: CCP2 (Compact Camera Port 2) + * @V4L2_MBUS_CSI2: MIPI CSI-2 serial interface + */ +enum v4l2_mbus_type { + V4L2_MBUS_PARALLEL, + V4L2_MBUS_BT656, + V4L2_MBUS_CSI1, + V4L2_MBUS_CCP2, + V4L2_MBUS_CSI2, +}; + +/** + * struct v4l2_mbus_config - media bus configuration + * @type: in: interface type + * @flags: in / out: configuration flags, depending on @type + */ +struct v4l2_mbus_config { + enum v4l2_mbus_type type; + unsigned int flags; +}; + +/** + * v4l2_fill_pix_format - Ancillary routine that fills a &struct + * v4l2_pix_format fields from a &struct v4l2_mbus_framefmt. + * + * @pix_fmt: pointer to &struct v4l2_pix_format to be filled + * @mbus_fmt: pointer to &struct v4l2_mbus_framefmt to be used as model + */ +static inline void v4l2_fill_pix_format(struct v4l2_pix_format *pix_fmt, + const struct v4l2_mbus_framefmt *mbus_fmt) +{ + pix_fmt->width = mbus_fmt->width; + pix_fmt->height = mbus_fmt->height; + pix_fmt->field = mbus_fmt->field; + pix_fmt->colorspace = mbus_fmt->colorspace; + pix_fmt->ycbcr_enc = mbus_fmt->ycbcr_enc; + pix_fmt->quantization = mbus_fmt->quantization; + pix_fmt->xfer_func = mbus_fmt->xfer_func; +} + +/** + * v4l2_fill_pix_format - Ancillary routine that fills a &struct + * v4l2_mbus_framefmt from a &struct v4l2_pix_format and a + * data format code. + * + * @mbus_fmt: pointer to &struct v4l2_mbus_framefmt to be filled + * @pix_fmt: pointer to &struct v4l2_pix_format to be used as model + * @code: data format code (from &enum v4l2_mbus_pixelcode) + */ +static inline void v4l2_fill_mbus_format(struct v4l2_mbus_framefmt *mbus_fmt, + const struct v4l2_pix_format *pix_fmt, + u32 code) +{ + mbus_fmt->width = pix_fmt->width; + mbus_fmt->height = pix_fmt->height; + mbus_fmt->field = pix_fmt->field; + mbus_fmt->colorspace = pix_fmt->colorspace; + mbus_fmt->ycbcr_enc = pix_fmt->ycbcr_enc; + mbus_fmt->quantization = pix_fmt->quantization; + mbus_fmt->xfer_func = pix_fmt->xfer_func; + mbus_fmt->code = code; +} + +/** + * v4l2_fill_pix_format - Ancillary routine that fills a &struct + * v4l2_pix_format_mplane fields from a media bus structure. + * + * @pix_mp_fmt: pointer to &struct v4l2_pix_format_mplane to be filled + * @mbus_fmt: pointer to &struct v4l2_mbus_framefmt to be used as model + */ +static inline void v4l2_fill_pix_format_mplane( + struct v4l2_pix_format_mplane *pix_mp_fmt, + const struct v4l2_mbus_framefmt *mbus_fmt) +{ + pix_mp_fmt->width = mbus_fmt->width; + pix_mp_fmt->height = mbus_fmt->height; + pix_mp_fmt->field = mbus_fmt->field; + pix_mp_fmt->colorspace = mbus_fmt->colorspace; + pix_mp_fmt->ycbcr_enc = mbus_fmt->ycbcr_enc; + pix_mp_fmt->quantization = mbus_fmt->quantization; + pix_mp_fmt->xfer_func = mbus_fmt->xfer_func; +} + +/** + * v4l2_fill_pix_format - Ancillary routine that fills a &struct + * v4l2_mbus_framefmt from a &struct v4l2_pix_format_mplane. + * + * @mbus_fmt: pointer to &struct v4l2_mbus_framefmt to be filled + * @pix_mp_fmt: pointer to &struct v4l2_pix_format_mplane to be used as model + */ +static inline void v4l2_fill_mbus_format_mplane( + struct v4l2_mbus_framefmt *mbus_fmt, + const struct v4l2_pix_format_mplane *pix_mp_fmt) +{ + mbus_fmt->width = pix_mp_fmt->width; + mbus_fmt->height = pix_mp_fmt->height; + mbus_fmt->field = pix_mp_fmt->field; + mbus_fmt->colorspace = pix_mp_fmt->colorspace; + mbus_fmt->ycbcr_enc = pix_mp_fmt->ycbcr_enc; + mbus_fmt->quantization = pix_mp_fmt->quantization; + mbus_fmt->xfer_func = pix_mp_fmt->xfer_func; +} + +#endif |